CN115338832A - Hand-held power tool - Google Patents

Abstract

A hand-held power tool (100) having a drive unit (111) and an output shaft (124) is disclosed, on which a tool interior receptacle (200) for receiving a plug-in tool (140) is formed, wherein the tool interior receptacle (200) has an axially movable piston (230) which can be arranged in a first position and a second position and comprises a radially movable locking element (220). It is proposed that the locking element (220) is designed to lock the piston (230) in the first position and to lock the insertion tool (140) in the tool interior receptacle (200) in the second position.

Description

Hand-held power tool

Technical Field

The invention relates to a hand-held power tool according to the invention.

Background

A collet device for a tool bit is already known from US 6270085 B1.

Disclosure of Invention

The starting point of the invention is a hand-held power tool having a drive unit and an output shaft, on which an inner tool receptacle for receiving a plug-in tool is formed, wherein the inner tool receptacle has an axially movable piston and comprises a radially movable locking element, wherein the piston can be arranged in a first position and a second position. It is proposed that the locking element is configured for locking the piston in a first position and for locking the insertion tool in the tool interior receptacle in a second position.

One disadvantage of the prior art is that the chuck apparatus can only receive one type of driver bit, either european or asian. The differences between a european driver bit and an asian driver bit are well known to those skilled in the art and will not be discussed in detail here. For the user, this means that he needs a separate hand-held power tool or a separate adapter for different screwdriver bit types. The present invention solves this problem.

The invention provides a hand-held power tool with which the use possibilities are increased in that the in-tool receptacle can receive both European and Asian insertion tools, in particular screwdriver bits. This is achieved in that the locking element locks the piston in the first position and locks the insertion tool in the second position.

The hand-held power tool can be designed as an electrically or pneumatically operated hand-held power tool. The electrically operated hand-held power tool can be designed as a mains-operated or battery-operated hand-held power tool. For example, the hand-held power tool can be configured as a screwdriver, a pneumatic screwdriver, a drill screwdriver, a rotary impact screwdriver, a hammer, a drill hammer, a pneumatic rotary impact screwdriver or a percussion drill screwdriver.

The drive unit comprises at least one drive motor and can in one embodiment have at least one transmission. The drive motor can be designed in particular as an electric motor. The transmission can be designed as a planetary transmission, wherein the transmission can be switchable, for example. The invention may also be used with other developed types or transmission types. In addition, the hand-held power tool comprises an energy supply, wherein the energy supply is provided for operation with a battery, in particular a battery pack of the hand-held power tool, and/or for operation with an electrical power grid. In a preferred embodiment, the energy supply is designed for battery operation. Within the scope of the present invention, a "hand-held power tool battery pack" is to be understood as meaning a combination of at least one battery cell and a battery pack housing. The battery pack of the hand-held power tool is advantageously designed for supplying energy to a commercially available battery-operated hand-held power tool. At least one battery cell can be designed as a lithium-ion battery cell, for example, with a nominal voltage of 3.6V. For example, the battery pack of the hand-held power tool can comprise up to ten battery cells, wherein other numbers of battery cells are also conceivable. The embodiment of a hand-held power tool operated as a battery and the operation of a hand-held power tool operated as a power grid are sufficiently known to the person skilled in the art, and therefore the details of the energy supply are not discussed here.

The drive unit is designed in such a way that it can be actuated by a manual switch. If the manual switch is actuated by the user, the drive unit is switched on and the hand-held power tool is put into operation. If the manual switch is not actuated further by the user, the drive unit is switched off. Preferably, the drive unit can be electronically controlled and/or regulated so that a reverse operation and a desired predetermined value of the rotational speed can be achieved. It is also conceivable for the manual switch to be a lockable manual switch which can be locked in at least one position in at least one operating state. In the reverse operation, the drive unit can be switchable between a clockwise direction of rotation and a counterclockwise direction of rotation. For switching the drive unit in reverse operation, the hand-held power tool can have a rotational direction switching element, in particular a rotational direction switch.

The hand-held power tool can have an impact mechanism. The impact mechanism generates high torque peaks during operation in order to thus release the fixed connection or to fasten the connection. The impact mechanism can be connected to the drive motor by means of a transmission. The impact mechanism can be configured, for example, as a rotary impact mechanism, a click impact mechanism, a rotary impact mechanism or a hammer mechanism. Additionally, the impact mechanism can be connected to the output shaft.

The tool interior receptacle is formed on the free end of the output shaft, in particular in a direction pointing away from the drive unit. The inner tool receiving portion has a polygonal inner receiving portion for connection with an insertion tool. The polygonal inner receptacle can be configured, for example, as an inner hexagonal receptacle, so that an insertion tool, which is exemplary in the form of a screwdriver bit, can be received. The screwdriver bit can be embodied in the european variant or the asian variant. Such a screwdriver bit is sufficiently known from the prior art that a detailed description is omitted here.

The hand-held power tool has at least one tool axis. The tool axis can be configured, for example, as a rotation axis of the output shaft. In particular, "axial" is understood to be substantially parallel to the tool axis. Whereas "radial" is to be understood as being substantially perpendicular to the tool axis.

The inner tool receiving portion has an axially movable piston. The piston is axially movable relative to the tool axis. The piston can be moved axially relative to the tool axis. The piston can be arranged into a first position and into a second position and can thus be moved from the first position into the second position and from the second position into the first position.

The inner tool receptacle has a radially movable locking element. The locking element is radially movable, in particular displaceable, relative to the tool axis. The locking element can be configured, for example, as a locking ball, a locking pin or a locking bar. The locking element is designed to lock the piston in a first position and to lock the insertion tool in a second position in the tool interior. In a first position of the piston, the locking element engages in the piston and locks the piston in the receiving portion in the tool in such a way that an axial movement of the piston is blocked. In the first position of the piston, the european screwdriver bit can be inserted into the tool receptacle and the user can work with the european screwdriver bit. In the first position of the piston, the european driver bit is axially blocked in the tool interior receptacle in such a way that further axial displacement in the direction of the drive unit is prevented. In the second position of the piston, the locking element releases the piston and the piston moves axially in the direction of the drive unit. For this purpose, the asian screwdriver bit can be inserted into the tool interior receptacle in the second position of the plunger. In the second position of the plunger, the locking element engages in a circumferential receptacle of the asian screwdriver bit. In this case, the locking element locks the asian screwdriver bits and blocks the axial displacement thereof in the receptacle in the tool. It is conceivable that the asian screwdriver bit is supported on or against the piston in the second position of the piston. It is also conceivable to provide a plurality of locking elements, so that for example two locking elements lock the piston in the first position or lock the insertion tool in the second position.

In one embodiment of the hand-held power tool, the receiving sleeve has at least one receiving portion for the locking element, wherein the receiving portion for the locking element is designed to receive the locking element and to arrange the locking element in a radially movable manner. By way of example, the receiving sleeve can be constructed in the form of a hollow cylinder. The receiving sleeve illustratively has a substantially cylindrical outer surface. Illustratively, the receiving sleeve has a substantially hexagonal inner surface, for example in the form of an internal hexagonal receiving portion. The receiving sleeve is designed to receive and axially movably support the piston. The piston is configured complementary to the receiving sleeve, in particular the inner surface of the receiving sleeve. The piston illustratively has an at least partially hexagonal outer surface and/or periphery. The receptacle for the locking element can be shaped, for example, in the form of a truncated cone or a cylinder. It is conceivable for the receptacle for the locking element to have a taper in the direction of the tool axis.

In one embodiment of the hand-held power tool, the inner tool receptacle, in particular the receiving sleeve, has an inner stop, wherein the inner stop is designed in such a way that the piston is supported on the inner stop in the first position. It is conceivable for the piston to bear against the inner stop in the first position. The inner stop can be designed, for example, integrally with the inner tool receptacle, in particular the receiving sleeve. It is conceivable for the inner stop to be connected to the inner tool receptacle, in particular to the receiving sleeve, in a form-fitting, force-fitting and/or material-fitting manner. The inner stop can be formed, for example, as a pin, a rod, a C-shaped ring, an at least partially circumferential web or an at least partially circumferential edge. The piston can be supported in the first position on the inner stop in such a way that a force directed from the drive unit is introduced via the inner stop into a receptacle, in particular a receiving sleeve, in the tool.

In one embodiment of the hand-held power tool, the receiving means in the tool, in particular the receiving sleeve, has an end stop, wherein the end stop is designed in such a way that the piston is supported on the end stop in the second position. It is conceivable for the piston to bear against the end stop in the second position. The end stop can, for example, be formed integrally with the receptacle in the tool, in particular the receiving sleeve. It is conceivable for the end stop to be connected to the receptacle in the tool, in particular to the receiving sleeve, in a form-fitting, force-fitting and/or material-fitting manner. The end stop can be configured, for example, as a pin, a rod, a C-shaped ring, an at least partially circumferential web, an at least partially circumferential edge or an end cap. If the end stop is configured as an end cap, the receptacle in the tool, in particular the receiving sleeve, has a receptacle for the end cap. The end cap can be connected to the receptacle for the end cap in a form-fitting, force-fitting and/or material-fitting manner. The piston can also be supported in the second position on the end stop in such a way that a force from the opposite direction to the drive unit is introduced via the end stop into a receptacle in the tool, in particular a receiving sleeve.

In one embodiment of the hand-held power tool, the receiving portion in the tool has at least one guide element, which is designed to guide the piston from the second position into the first position. When the piston is in the second position, the guide element acts on the piston in such a way that the piston is moved axially from the second position into the first position. The guide element can be configured as a spring element. The spring element is configured as a helical spring or a leaf spring. The guide element is arranged substantially in a receptacle, in particular a receiving sleeve, in the tool. The guide element can be arranged between the inner stop and the end stop, in particular between the end stop and the piston.

In one embodiment of the hand-held power tool, the piston has a receptacle for the locking element of the piston, in particular on an outer surface of the piston, wherein the receptacle for the locking element of the piston is designed such that the locking element engages in the receptacle for the locking element of the piston in the first position. The locking element can be inserted at least in a form-fitting manner into a receptacle of the piston for the locking element and locks the piston in the first position. The receptacle of the piston for the locking element can be configured in the form of a bowl, in the form of a disk or in the form of a pot. The receptacle of the piston for the locking element can be formed on the side of the piston, in particular on the outer surface of the piston.

It is conceivable to provide a plurality of receptacles for the locking elements, wherein the plurality of receptacles for the locking elements can correspond to the plurality of locking elements.

In one embodiment of the hand-held power tool, the piston has at least one support element, wherein the support element is designed to be supported in the first position on a receptacle, in particular a receptacle sleeve, in particular an inner stop, in the tool. The support element can have a complementary shape, for example a hexagonal shape, to the receiving portion, in particular the receiving sleeve, in the tool. The support element can be designed as a single piece with the piston or as a form-fitting, force-fitting or material-fitting connection with the piston. The support element can be designed, for example, as an at least partially circumferential edge, an at least partially circumferential web, a pin, a rod or the like. In the first position of the piston, the piston is axially supported by means of the support element on a receiving means, in particular a receiving sleeve, in particular an inner stop, in the tool and introduces a force from the direction of the drive unit into the receiving means, in particular the receiving sleeve, in the tool.

In one embodiment of the hand-held power tool, the piston has at least one connecting element for connecting to the insertion tool. The piston can have a receptacle for the connecting element and form-locking, force-locking and/or material-locking connections with the connecting element. The receptacle for the connecting element can be configured, for example, in the form of a bowl or in the form of a pot. By way of example, the connecting element can be configured as a magnet. The connecting element makes it possible to hold an insertion tool, which is designed as a european screwdriver bit or asian screwdriver bit, in the tool receptacle during insertion into the hand-held power tool.

In one embodiment of the hand-held power tool, the piston has a receiving element for the guide element, wherein the receiving element is designed to receive the guide element, in particular in a form-fitting manner. The receiving element for the guide element can be configured as an inner receiving part or as an outer receiving part. The receiving element for the guide element can be configured, for example, in the form of a rod, in the form of a pin, in the form of a bowl or in the form of a pot. In this case, the receiving element for the guide element can be designed, for example, integrally with the piston. In the second position, the piston can be placed against an end stop, in particular an end cap, by means of a receiving element for the guide element.

In one embodiment of the hand-held power tool, the inner tool receptacle has an axially movable locking sleeve, wherein the locking sleeve can be arranged in a blocking position in which the locking sleeve blocks the locking element, and in a release position in which the locking sleeve releases the locking element. The inner receptacle of the tool, in particular the receiving sleeve, has a receptacle on the outer surface for the locking sleeve. For example, the receptacle for the locking sleeve can be cylindrically configured. The receptacle for the locking sleeve can be integral with the receptacle in the tool, in particular the receiving sleeve. The receptacle for the locking sleeve receives the locking sleeve at least in a form-fitting manner and is arranged axially movably on the receptacle, in particular on the receiving sleeve, in the tool. The locking sleeve can at least partially surround a receptacle, in particular a receiving sleeve, in the tool. The locking sleeve can be arranged coaxially around a receiving portion, in particular a receiving sleeve, in the tool. The receiving sleeve can be arranged radially between the locking sleeve and the piston. In the blocking position, the locking sleeve blocks the locking element to prevent radial movement of the locking element. In the blocking position, the locking sleeve blocks the locking element in such a way that the piston is locked in the first position or the insertion tool is locked in the second position. In the release position, the locking sleeve releases the locking element and the locking element is at least partially radially movable. In the release position, the insertion tool and/or the piston can be moved axially in a receptacle in the tool, in particular in a receiving sleeve.

In one embodiment of the hand-held power tool, the locking sleeve has at least one recess for the locking element, wherein the recess is designed such that the locking element engages in the recess in the release position. The recess for the locking element can be at least partially circumferential. The recess for the locking element can be, for example, an at least partially circumferential groove. In the release position, the recess for the locking element can at least partially receive the locking element, so that the piston and/or the insertion tool can be moved axially in the tool interior receptacle, in particular in the receiving sleeve, and can be moved relative to the locking element.

In one embodiment of the hand-held power tool, the locking sleeve has a blocking element, wherein the blocking element is designed to block the locking element in a blocking position. The blocking element can be designed as an at least partially circumferential web, pin, rod or an at least partially circumferential edge. In the blocking position, the blocking element enables the locking sleeve to block the radial movement of the locking element. In the blocking position, the blocking element blocks the locking element in such a way that the piston and/or the insertion tool is locked in a receptacle in the tool, in particular in the receiving sleeve.

In one embodiment of the hand-held power tool, the locking sleeve has at least one spring element, wherein the spring element is designed to guide the locking sleeve from the release position into the blocking position. The spring element can be configured as a helical spring or a leaf spring. The spring element can be arranged radially between the receiving sleeve and the locking sleeve. The spring element can be arranged coaxially with the receiving sleeve around the receiving sleeve. The spring element can at least partially surround the receiving sleeve.

In one embodiment, the locking sleeve has at least one receptacle for a spring element, wherein the receptacle for the spring element at least partially receives the spring element. The locking sleeve can be configured as a receptacle for the spring element as an inner receptacle for the spring element. The receptacle for the spring element can be formed circumferentially in the locking sleeve.

In one embodiment of the hand-held power tool, the inner tool receptacle has at least one blocking element, wherein the blocking element is arranged in particular radially between the receptacle sleeve and the locking sleeve and is designed to axially block the locking sleeve. The spring element can be arranged axially between the blocking element and the blocking element. The spring element can rest against the blocking element and the blocking element. The blocking element can block the locking sleeve in a direction against the drive unit. The spring element acts on the blocking element in such a way that the locking sleeve is acted upon in the direction of the blocking position. In this way, the spring element can be realized such that the locking sleeve is in the blocking position until the user moves the locking sleeve into the release position. As soon as the user releases the locking sleeve, the locking sleeve is moved into the blocking position by means of the spring element. The blocking element can be configured as a pin, a rod, an edge, a strip or a C-shaped ring.

In one embodiment of the hand-held power tool, the inner tool receptacle, in particular the receptacle sleeve, has at least one outer stop, wherein the locking sleeve rests against the outer stop in the blocking position. The outer stop is arranged on a receiving portion, in particular a receiving sleeve, in the tool in the circumferential direction with respect to the tool axis. The outer stop can be integral with the inner tool receptacle, in particular the receptacle sleeve. The outer stop can be configured, for example, as a rod, a pin, an at least partially circumferential web, an at least partially circumferential step, an at least partially circumferential edge. In the blocking position, the locking sleeve bears against the outer stop. The spring element acts on the locking sleeve via the blocking element in such a way that the locking sleeve bears against the outer stop. The axial movement of the locking sleeve is limited by the blocking element and the outer stop.

Drawings

The invention is elucidated below with reference to a preferred embodiment. The drawings show below:

fig. 1 is a schematic illustration of a hand-held power tool according to the invention with an inner tool receptacle;

fig. 2 is an exploded view of an inner tool receptacle of the hand-held power tool;

FIG. 3a is a cross-sectional view of the receiver in the tool in a first position;

FIG. 3b is a cross-sectional view of the inner tool receptacle in a second position;

FIG. 4a is a cross-sectional view of the receiver in the tool in the jamming position;

fig. 4b is a cross-sectional view of the receiving part in the tool in the release position.

Detailed Description

Fig. 1 shows a hand-heldpower tool 100 according to the invention, which is embodied here as an exemplary rechargeable-battery rotary impact screwdriver. The hand-heldpower tool 100 comprises anoutput shaft 124, aninner tool receptacle 200 and anexemplary percussion mechanism 122, for example a rotary or swiveling percussion mechanism. The hand-heldpower tool 100 has ahousing 110 with ahandle 126. For the grid-independent current supply, the hand-heldpower tool 100 can be mechanically and electrically connected to an energy supply for battery operation, so that the hand-heldpower tool 100 is designed as a battery-operated hand-heldpower tool 100. The hand-held powertool battery pack 130 serves as an energy supply. However, the invention is not limited to battery-operated hand-held power tools, but can also be used in mains-dependent, i.e., mains-operated hand-held power tools or pneumatically-operated hand-held power tools.

Thehousing 110 includes an energysupply retaining device 160. Theenergy supply holder 160 receives the hand-held powertool battery pack 130 and is designed here as a stand-off 162 with a mounting surface. The hand-held powertool battery pack 130 can be released from theenergy supply holder 160 without tools. Further, thehousing 110 has ahandle 126 and an energysupply retaining device 160. Thehandle 126 can be grasped by the user. In one embodiment, the energysupply retaining device 160 is disposed on thehandle 126. The hand-heldpower tool 100 can be parked by means of thefoot 162.

Here, thehousing 110 illustratively further includes adrive unit 111 and animpact mechanism 122. Thedrive unit 111 also comprises anelectric drive motor 114, which is supplied with current from a hand-held powertool battery pack 130, and atransmission 118. Thegear 118 can be designed as at least one planetary gear. Thedrive motor 114 is designed such that it can be actuated by means of amanual switch 128, so that thedrive motor 114 can be switched on and off. Thedrive motor 114 can be any motor type, such as an electronically commutated motor or a direct current motor. Advantageously, thedrive motor 114 can be electronically controlled and/or regulated, so that a reverse run and a desired rotational speed can be achieved. For the reverse operation, the hand-heldpower tool 100 has a rotationaldirection switching element 121, which is designed as a rotational direction switch. The rotationaldirection switching member 121 is configured to switch thedrive motor 114 between a clockwise rotational direction and a counterclockwise rotational direction. The construction and the functioning of suitable drive motors are sufficiently known to the person skilled in the art and are therefore not discussed in detail here. The hand-heldpower tool 100 comprises atool axis 134. Thetool axis 134 is here exemplified as the axis of rotation of theoutput shaft 124. In particular, "axial" should be understood as being substantially parallel to thetool axis 134, and "radial" should be understood as being substantially perpendicular to thetool axis 134.

Thetransmission 118 is connected to thedrive motor 114 via amotor shaft 116. Thetransmission 118 is provided for converting a rotation of themotor shaft 116 into a rotation between thetransmission 118 and theimpact mechanism 122 by means of adrive member 120, e.g. a drive shaft. Preferably, the switching is done such that thedrive member 120 rotates with increased torque but at a reduced rotational speed relative to themotor shaft 116. Illustratively, thedrive motor 114 is assigned amotor housing 115, as is the case with thetransmission 118 assigned atransmission housing 119. Themotor housing 115 and thetransmission housing 119 are illustratively disposed in thehousing 110. However, it is also conceivable that thedrive motor 114 and thegear 118 can be arranged directly in thehousing 110, if the hand-heldpower tool 100 is constructed in an "open frame" design.

Theimpact mechanism 122 is connected to thedrive member 120 and illustratively includes animpact body 125 that generates high intensity impact-type rotational pulses. These impact-type rotational pulses are transmitted to anoutput shaft 124, such as a work spindle, via animpact body 125. Theimpact mechanism 122 comprises animpact mechanism housing 123, wherein theimpact mechanism 122 can also be arranged in another suitable housing, for example thetransmission housing 119.

Theexemplary impact mechanism 122 is configured to drive anoutput shaft 124. An in-tool receiver 200 is provided on theoutput shaft 124. Preferably, the in-tool receptacle 200 is formed and/or configured in theoutput shaft 124. In this embodiment, the in-tool receptacle 200 is arranged in theaxial direction 132 pointing away from thedrive unit 111. Preferably, theoutput shaft 124 is integrally constructed with the in-tool receiver 200. The in-tool receptacle 200 comprises a polygonal inner receptacle 202 for connection with theinsertion tool 140, see also fig. 2, 3, 4. In this embodiment, the polygonal inner receptacle 202 is shaped in the manner of a bit holder with an inner hexagonal receptacle 204 and is configured for receiving aninsertion tool 140 in the form of a screwdriver bit, see also fig. 2, 3, 4. To this end, theinsertion tool 140 has a matching outerhexagonal coupling portion 142. The type of screwdriver bits, for example in the form of a hexagon, is sufficiently known to the person skilled in the art. However, the invention is not limited to the use of hex driver bits, but may also be used in other insertion tools, such as hex bits or SDS quick insertion tools, as deemed significant by those skilled in the art.

Fig. 2 shows an exploded view of theinner tool receiver 200 of the hand-heldpower tool 100. The in-tool receiver 200 includes an axiallymovable piston 230. Thepiston 230 can be arranged in a first position and a second position, for which reference is made to fig. 3. In this case, thepiston 230 can be moved axially relative to thetool axis 134. Theplunger 230 is configured such that theplunger 230 can be moved from a first position into a second position and from the second position into the first position. The in-tool receptacle 200 comprises a radially movable locking element 220. The locking element 220 is configured for locking thepiston 230 in the first position and for locking theinsertion tool 140 in the in-tool receptacle 200 in the second position. Here, the locking element 220 is movable in a radial direction relative to thetool axis 134. Here, the locking element 220 is illustratively formed as a locking ball 222.

The in-tool receptacle 200 comprises a receptacle sleeve 210 with at least onereceptacle 214 for a locking element 220. Thereceptacle 214 for the locking element 222 is shaped for receiving the locking element 220 and is arranged to be radially movable. Here, thereceptacle 214 for the locking element 220 is shaped in the form of a truncated cone, see also fig. 3, 4. The receiving sleeve 210 is illustratively formed as ahollow cylinder 214. Furthermore, the receiving sleeve 210 here comprises, by way of example, a substantially cylindricalouter surface 213 and a substantially hexagonalinner surface 215 in the form of an inner hexagonal receptacle. The receiving sleeve 210 is shaped to receive and axially movably support thepiston 230. Theplunger 230 is complementarily shaped to the receiving sleeve 210. Thepiston 230 includes an at least partially hexagonalouter surface 232.

The in-tool receiver 200 includes an end stop 216. The end stop 216 is shaped such that thepiston 230 rests on the end stop 216 in the second position, see also fig. 3b. Here, the end stop 216 is connected to the receiving sleeve 210, for example, at least in a form-locking manner. Here, the end stop 216 is shaped as an end cap 217. Here, the receiving sleeve 210 comprises a receiving portion 218 for an end cap 217, see also fig. 3 and 4. Here, the end cap 217 is connected at least positively with a receptacle 218 for the end cap 217.

Furthermore, the in-tool receptacle 200 comprises a guide element 240. The guide element 240 is shaped to guide thepiston 230 from the second position into the first position. Here, the guide element 240 is formed as a spring element 242, wherein the spring element 242 is a helical spring. The guide element 240 is arranged substantially within the receiving sleeve 210, see also fig. 3 and 4.

Thepiston 230 comprises a receivingportion 234 for the locking element 220. Thereceptacle 234 of thepiston 230 for the locking element 220 is shaped in such a way that the locking element 220 engages in thereceptacle 234 of thepiston 230 for the locking element 220 in the first position, see also fig. 3a. In this case, the locking element 220 engages at least positively in areceptacle 234 of thepiston 230 for the locking element 220 and locks thepiston 230 in the first position. Thereceptacle 234 of thepiston 230 for the locking element 220 is shaped in the form of a bowl. Further, thepiston 230 includes asupport member 236. Thesupport element 236 includes a shape that is complementarily configured to theinner surface 215 of the receiving sleeve 210. For example, thesupport element 236 is hexagonal in shape. Thesupport member 236 is integral with thepiston 230. Here, thesupport element 236 is shaped as a circumferential step. Furthermore, thepiston 230 comprises a receiving element 238 for a guide element 240. The receiving element 238 is shaped for receiving the guide element 240, wherein the receiving element 238 for the guide element 240 is shaped here as an outer receptacle. The receiving element 238 for the guide element 240 is illustratively shaped in the form of a rod 239. Illustratively, the receiving element 238 for the guiding element 240 is integral with thepiston 230.

The in-tool receiver 200 includes an axiallymovable locking sleeve 250. The lockingsleeve 250 can be arranged in a blocking position and a release position, see also fig. 4. The receiving sleeve 210 comprises a receivingportion 219 on theouter surface 213 for a lockingsleeve 250. Illustratively, thereceptacle 219 for the lockingsleeve 250 is, for example, cylindrically shaped and is integral with the receiving sleeve 210. Thereceptacle 219 for the lockingsleeve 250 receives the lockingsleeve 250 at least in a form-locking manner. Furthermore, thereceptacle 219 for the lockingsleeve 250 axially movably arranges the lockingsleeve 250 on the receiving sleeve 210. The lockingsleeve 250 at least partially surrounds a receptacle for the lockingsleeve 250. Here, the lockingsleeve 250 is arranged coaxially with the receiving sleeve 210, such that the receiving sleeve 210 is arranged radially between the lockingsleeve 250 and thepiston 230.

Lockingsleeve 250 includes aspring element 252. Thespring element 252 is configured for guiding the lockingsleeve 250 from the release position into the blocking position, see also fig. 4. Illustratively, thespring element 252 is formed as a coil spring. Thespring element 252 is arranged radially between the receiving sleeve 210 and the lockingsleeve 250 and coaxially with the receiving sleeve 210, see also fig. 3 and 4. In this case, thespring element 252 at least partially surrounds the receiving sleeve 210.

The in-tool receiver 200 includes a blockingelement 260. The blockingelement 260 is arranged radially between the receiving sleeve 210 and the lockingsleeve 250, see also fig. 3 and 4. The blockingelement 260 is designed to axially block the lockingsleeve 250. Illustratively, the blockingelement 260 is shaped as a C-shaped ring. Further, the receiving sleeve 210 comprises anouter stop 211. In the blocking position, the lockingsleeve 250 rests against theouter stop 211, see also fig. 3 and 4. Theouter stop 211 is arranged in the receiving sleeve 210 in the circumferential direction with respect to thetool axis 134 and is integral with the receiving sleeve 210. Theouter stop 211 is formed as a circumferential step.

Fig. 3a shows a cross-sectional illustration of the in-tool receptacle 200 in the first position. In the first position of theplunger 230, the locking element 220 is embedded in theplunger 230. In this case, the locking element 220 locks thepiston 230 in thetool interior 200 in such a way that thepiston 230 is blocked with respect to axial movement. Here, the european driver bit can be inserted into the toolinterior receiving portion 200, so that the user can work with the european driver bit. The locking element 220 locks thepiston 230 in the first position in such a way that an axial movement of the european driver bit in the toolinterior receptacle 200 in the direction of thedrive unit 111 is prevented.

Thepiston 230 includes acoupling element 270 for coupling with theinsertion tool 140. Here, thepiston 230 comprises areceptacle 237 for the connectingelement 270. Thereceptacle 237 for the connectingelement 270 and the connecting element form at least one form-locking connection. Thereceptacle 237 for the connectingelement 270 is illustratively shaped in the form of a can. The connectingelement 270 is illustratively shaped as a magnet. Here, the connectingelement 270 enables: theinsertion tool 140 is held in the toolinterior receiving portion 200 during use of the hand-heldpower tool 100.

Receiving sleeve 210 includes aninner stop 224. Theinner stop 224 is designed such that thepiston 230 rests against theinner stop 224 in the first position. Theinner stop 224 is illustratively integrally formed with the receiving sleeve 210 and is formed as a circumferential edge. In the first position, thepiston 230 rests by means of thesupport element 236 against theinner stop 224 in such a way that a force directed from thedrive unit 111 is introduced through theinner stop 224 into the receiving sleeve 210. Here, the guide element 240 is arranged between theinner stop 224 and the end stop 216.

The lockingsleeve 250 includes anotch 254 for the locking element 220. Therecess 254 is designed such that the locking element 220 engages in therecess 254 in the release position, see also fig. 4b. Illustratively, thenotch 254 for the locking element 220 is configured to be circumferential and shaped as a circumferential groove. Further, the lockingsleeve 250 includes a jammingelement 256. The latchingelement 256 is designed to latch the locking element 220 in the latched position. Illustratively, the blockingelement 256 is shaped to surround the slats. Thespring element 252 is axially arranged between the blockingelement 260 and the jammingelement 256. In this case, thespring element 252 bears against the blockingelement 260 and the blockingelement 256. The lockingsleeve 250 also includes areceiver 258 for thespring element 252. Thereceiver 258 for thespring element 252 at least partially receives thespring element 252. The lockingsleeve 250 is designed in a circumferential manner in the lockingsleeve 250 as areceptacle 258 for thespring element 252 as an inner receptacle for thespring element 252.

Fig. 3b shows a cross-sectional illustration of the in-tool receptacle 200 in the second position. The locking element 220 releases thepiston 230 in the second position of thepiston 230. Here, thepiston 230 moves in the axial direction toward the drivingunit 111. In the second position of theplunger 230, the asian screwdriver bits can be inserted into the in-tool receptacle 200. In this case, the locking element 220 engages in a circumferential receptacle of the asian screwdriver bits. The locking element 220 locks the asian screwdriver bit and blocks its axial movement within the in-tool receptacle 200. Here, the asian screwdriver bits rest, for example, on theplunger 230 in the second position of theplunger 230. In the second position, thepiston 230 is, for example, seated against the end stop 216 by means of the receiving element 238, so that a force from a direction opposite thedrive unit 111 is introduced into the receiving sleeve 210 via the end stop 216. In the second position, the guide element 240 loads thepiston 230 such that thepiston 230 can be moved axially from the second position into the first position.

Fig. 4a shows a cross-sectional illustration of the in-tool receptacle 200 in the blocking position. In the jamming position, the lockingsleeve 250 jams the locking element 220 to prevent radial movement of the locking element 220. Here, the lockingsleeve 250 blocks the locking element 220, so that thepiston 230 is locked in the first position or in the second position the insertion tool is locked. Here, the spring element 242 acts on the blockingelement 260 in such a way that the lockingsleeve 250 is acted upon in the direction of the blocking position. In the blocking position, the lockingsleeve 250 rests against theouter stop 211. In this case, the spring element 242 loads the lockingsleeve 250 by means of the latchingelement 256 in such a way that the lockingsleeve 250 bears against theouter stop 211.

Fig. 4b shows a cross-sectional view of the innertool receiving portion 200 in the release position. The lockingsleeve 250 releases the locking element 220 in the release position. Thenotch 254 for the locking element 220 at least partially receives the locking element 220. In this case, the locking element 220 can be moved at least partially radially. In the release position, theinsertion tool 140 and thepiston 230 can move axially within the receiving sleeve 210.

Claims (15)

1. Hand-held power tool (100) having a drive unit (111) and an output shaft (124), on which an in-tool receptacle (200) is formed for receiving a plug-in tool (140), wherein the in-tool receptacle (200) has an axially movable piston (230) which can be arranged in a first position and a second position and comprises a radially movable locking element (220),

it is characterized in that the preparation method is characterized in that,

the locking element (220) is designed to lock the piston (230) in the first position and to lock the insertion tool (140) in the in-tool receptacle (200) in the second position.

2. The hand-held power tool (100) according to claim 1, characterized in that the in-tool receptacle (200) has a receiving sleeve (210) with at least one receptacle (214) for the locking element (220), wherein the receptacle (214) for the locking element (220) is designed to receive the locking element (220) and to arrange it so as to be radially movable.

3. The hand-held power tool (100) according to claim 1 or 2, characterized in that the inner tool receptacle (200), in particular the receptacle sleeve (210), has an inner stop (224), wherein the inner stop (224) is designed such that the piston (230) rests on the inner stop (224) in the first position.

4. The hand-held power tool (100) according to any one of claims 1 to 3, characterized in that the in-tool receptacle (200), in particular the receptacle sleeve (210), has an end stop (216), wherein the end stop (216) is designed such that the piston (230) is supported in the end stop (216) in the second position.

5. The hand-held power tool (100) according to one of the preceding claims, wherein the in-tool receptacle (200) has at least one guide element (240) which is configured for guiding the piston (230) from the second position into the first position.

6. The hand-held power tool (100) according to one of the preceding claims, wherein the piston (230) has a receptacle (234) of the piston (230) for the locking element (220), in particular on an outer surface (223) of the piston (230), wherein the receptacle (234) of the piston (230) for the locking element (220) is designed such that the locking element (220) engages in the receptacle (234) of the piston (230) for the locking element (220) in the first position.

7. The hand-held power tool (100) according to one of the preceding claims, wherein the piston (230) has at least one support element (236), wherein the support element (236) is configured for supporting in the first position on the tool inner receptacle (200), in particular on the receiving sleeve (210), in particular completely on the inner stop (224).

8. The hand-held power tool (100) according to any one of the preceding claims, characterised in that the piston (230) has at least one connecting element (270) for connecting with the plug-in tool (140).

9. The hand-held power tool (100) according to any one of the preceding claims, wherein the piston (230) has a receiving element (238) for the guide element (240), wherein the receiving element (238) is designed to receive, in particular form-fittingly receive, the guide element (240).

10. The hand-held power tool (100) according to one of the preceding claims, characterized in that the inner tool receptacle (200) has an axially movable locking sleeve (250), wherein the locking sleeve (250) can be arranged in a blocking position, in which the locking sleeve (250) blocks the locking element (220), and in a release position, in which the locking sleeve (250) releases the locking element (220).

11. The hand-held power tool (100) according to claim 10, characterized in that the locking sleeve (220) has at least one recess (254) for the locking element (220), wherein the recess (254) is designed such that the locking element (220) engages in the recess (254) in the release position.

12. The hand-held power tool (100) according to claim 10 or 11, characterized in that the locking sleeve (254) has a blocking element (256), wherein the blocking element (256) is designed to block the locking element (220) in the blocking position.

13. The hand-held power tool (100) according to one of claims 10 to 12, wherein the locking sleeve (250) has at least one spring element (252), wherein the spring element (252) is configured for guiding the locking sleeve (250) from the release position into the blocking position.

14. The hand-held power tool (100) according to any one of claims 10 to 13, characterized in that the inner tool receptacle (200) has at least one blocking element (260), wherein the blocking element (260) is arranged in particular radially between the receiving sleeve (210) and the locking sleeve (250) and is designed to axially block the locking sleeve (250).

15. The hand-held power tool (100) according to one of the preceding claims, wherein the inner tool receiving part (200), in particular the receiving sleeve (210), has at least one outer stop (211), wherein the locking sleeve (250) rests against the outer stop (211) in the blocking position.

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