技术领域technical field
本发明涉及一种动力工具，该工具包括用于驱动工具的输出轴以及用于将工作元件夹持到所述输出轴端部的紧固件，还包括一用于使所述紧固件可在释放位置及夹紧位置之间移动的移动装置，在释放位置处，紧固件通过与移动装置脱离而可以从输出轴上拆除，反之，在夹紧位置处，紧固件通过移动装置锁合及弹性元件协同作用而支靠输出轴端部使工作元件牢靠夹持。The present invention relates to a power tool comprising an output shaft for driving the tool and a fastener for clamping a working element to the end of the output shaft, and a fastener for making the fastener A moving device that moves between a released position and a clamped position, in which the fastener can be removed from the output shaft by disengaging from the moving device, whereas in the clamped position, the fastener is locked by the moving device The joint and the elastic element work together to support the end of the output shaft so that the working element is firmly clamped.
背景技术Background technique
从US6569001B2公知一种具有快速夹紧装置的动力工具，该手持工具为角向磨光机，角向磨光机在其中安装有中空的输出轴，中空心轴中安装有可沿心轴轴向在夹紧位置及释放位置之间移动的夹紧装置，该夹紧装置包括一中部设有螺纹销的夹紧法兰，该夹紧法兰用于与中空心轴端部的相对法兰配合从而使工作元件夹紧在两者之间，在中空心轴中还设置一与螺纹销配合的推力构件，在夹紧位置时，螺纹销旋进推力构件的螺纹内并在弹簧力作用下保持在该夹紧位置，在释放位置时，推力构件推动螺纹销从而带动夹紧法兰克服弹簧力作用而与所夹持的工作元件表面脱离，由于此时夹紧法兰和被夹持工作元件之间相对转动时不存在摩擦力了，所以无需借助附件就可以手动地将夹紧法兰的螺纹销旋出推力构件，可方便地更换工作元件。Known from US6569001B2 is a power tool with a quick clamping device, the hand tool is an angle grinder, the angle grinder is equipped with a hollow output shaft, and the hollow shaft is equipped with a Clamping device movable between a clamped position and a released position, the clamping device comprises a clamping flange with a threaded pin in the middle, the clamping flange is adapted to cooperate with the opposite flange at the end of the hollow mandrel So that the working element is clamped between the two, and a thrust member cooperating with the threaded pin is also arranged in the hollow shaft. In the clamping position, the threaded pin is screwed into the thread of the thrust member and held under the action of the spring force In the clamping position, when in the release position, the thrust member pushes the threaded pin to drive the clamping flange to overcome the spring force and separate from the surface of the clamped working element. There is no frictional force when they rotate relative to each other, so the threaded pin of the clamping flange can be manually unscrewed out of the thrust member without the help of accessories, and the working element can be easily replaced.
尽管这种夹紧装置无需辅助工具就能基本上将工作元件夹紧到手持工具的输出轴上，但这种夹紧装置仅适用于夹紧被转动驱动的工作元件，如果工作元件由振动装置进行驱动，以使工作元件沿输出轴的纵向轴线前后摆动，则这导致在转动的两个方向上产生较大的突变转矩并具有极大的冲击，不可能通过公知的夹紧装置来确保将工作元件充分牢固的夹紧。Although this clamping device can basically clamp the working element to the output shaft of the hand tool without auxiliary tools, this clamping device is only suitable for clamping the working element that is driven by rotation, if the working element is driven by the vibration device drive so that the working element oscillates back and forth along the longitudinal axis of the output shaft, this results in large abrupt torques in both directions of rotation and with extreme shocks, which cannot be ensured by known clamping devices Clamp the working element sufficiently and securely.
上述现有技术中的动力工具还有一个缺陷，就是夹装在其上的工作元件不能进行多角度调节，因为，工作元件通过夹紧装置要么处于被夹紧而执行操作的状态，要么处于被释放而可取出的状态，当需要进行多角度工况作业的时候，工作元件需要取下并被重新夹持，该操作费力且费时，不够方便。The above-mentioned power tool in the prior art also has a defect that the working element clamped on it cannot be adjusted at multiple angles, because the working element is either in the state of being clamped and performing an operation through the clamping device, or is in the state of being clamped. In the released and removable state, when it is necessary to perform multi-angle working conditions, the working element needs to be removed and re-clamped. This operation is laborious and time-consuming, and is not convenient enough.
发明内容Contents of the invention
针对上述现有技术存在的缺陷，本发明提供一种动力工具，夹装到其驱动轴上工作元件可进行角度调节。In view of the above-mentioned defects in the prior art, the present invention provides a power tool, the angle of which can be adjusted by the working element clamped on the drive shaft thereof.
为解决以上技术问题，本发明采用以下的技术方案：In order to solve the above technical problems, the present invention adopts the following technical solutions:
一种动力工具，包含：驱动工作元件的驱动轴；夹装所述工作元件的夹装机构，所述夹装机构具有夹紧位置及释放位置，在所述夹紧位置上，所述工作元件相对所述驱动轴固定，在所述释放位置上，所述工作元件可从所述驱动轴上取下；及可供人手操作的操作件； 其中，所述动力工具还包括扭力驱动结构，所述驱动轴具有一纵向轴线，所述操作件驱动所述扭力驱动结构沿所述纵向轴线移动，使得所述扭力驱动结构与所述驱动轴啮合或脱开啮合，所述夹装机构还具有旋转位置，在所述旋转位置上，所述工作元件可相对所述驱动轴旋转一角度，所述操作件有一个与所述旋转位置对应的动作位置，所述夹装机构在夹紧位置，所述工作元件被夹紧，所述扭力驱动结构与所述驱动轴啮合，所述夹装机构在旋转位置，所述工作元件被夹紧，所述扭力驱动结构与所述驱动轴脱开啮合，所述夹装机构在释放位置，所述扭力驱动结构与所述驱动轴脱开啮合，所述工作元件可从所述驱动轴上取下。A power tool, comprising: a drive shaft for driving a working element; a clamping mechanism for clamping the working element, the clamping mechanism has a clamping position and a releasing position, and in the clamping position, the working element fixed relative to the drive shaft, at the release position, the working element can be removed from the drive shaft; and an operating member that can be manually operated; wherein the power tool also includes a torque drive structure, the The driving shaft has a longitudinal axis, the operating member drives the torque driving structure to move along the longitudinal axis, so that the torque driving structure engages or disengages with the driving shaft, and the clamping mechanism also has a rotating position, in the rotation position, the working element can rotate an angle relative to the drive shaft, the operating member has an action position corresponding to the rotation position, the clamping mechanism is in the clamping position, the The working element is clamped, the torsion driving structure is engaged with the drive shaft, the clamping mechanism is in a rotating position, the working element is clamped, the torsion driving structure is disengaged from the drive shaft, The clamping mechanism is in the release position, the torque drive structure is disengaged from the drive shaft, and the working element can be removed from the drive shaft.
进一步地，所述驱动轴关于其纵向轴线被以振动的方式驱动。Further, the drive shaft is driven in a vibratory manner about its longitudinal axis.
进一步地，所述驱动轴包含被构造成中空的心轴部分，所述夹装机构包含紧固元件及锁紧组件，所述紧固元件具有可伸入到所述心轴内的夹紧轴，所述锁紧组件可将所述夹紧轴锁定在所述心轴内。Further, the drive shaft includes a hollow mandrel portion, the clamping mechanism includes a fastening element and a locking assembly, the fastening element has a clamping shaft that can extend into the mandrel , the locking assembly can lock the clamping shaft within the mandrel.
进一步地，在所述夹紧位置上，所述紧固元件被所述锁紧组件锁紧并位于第一锁定位置上，在所述旋转位置上，所述紧固元件被所述锁紧组件锁紧并位于第二锁定位置上，在所述释放位置上，所述紧固元件可从所述锁紧组件中松脱。Further, in the clamping position, the fastening element is locked by the locking assembly and is located at the first locking position, and in the rotating position, the fastening element is locked by the locking assembly locked and positioned in a second locked position in which the fastening element is releasable from the locking assembly.
进一步地，所述锁紧组件包含锁紧件、中间件及移动件，所述中间件啮合在所述锁紧件及所述移动件之间，所述移动件上设有凹部及平直部，所述中间件可选择地与所述凹部或所述平直部抵接。Further, the locking assembly includes a locking piece, an intermediate piece and a moving piece, the middle piece is engaged between the locking piece and the moving piece, and the moving piece is provided with a concave portion and a straight portion , the intermediate piece can selectively abut against the concave portion or the straight portion.
进一步地，在所述第一、第二锁定位置上，所述锁紧件与所述紧固元件的夹紧轴以形锁合结构连接。Further, in the first and second locking positions, the locking member is connected with the clamping shaft of the fastening element in a form-locking structure.
进一步地，所述形锁合结构包括设于所述夹紧轴和所述锁紧件上的用于形锁合的环向槽或齿。Further, the shape-locking structure includes annular grooves or teeth for shape-locking that are provided on the clamping shaft and the locking member.
进一步地，所述驱动轴上连接有可沿驱动轴的轴线方向移动的法兰件，所述法兰件具有第一端及第二端，所述第一端与所述驱动轴适配，所述第二端可将所述工作元件夹紧在所述紧固元件上。 Further, the drive shaft is connected with a flange that can move along the axial direction of the drive shaft, the flange has a first end and a second end, the first end is adapted to the drive shaft, The second end may clamp the working element to the fastening element. the
进一步地，在所述夹紧位置上，所述法兰件的第一端与所述驱动轴不可相对转动连接，在所述旋转位置上，所述法兰件的第一端与所述驱动轴的轴端脱开。Further, in the clamping position, the first end of the flange is connected to the drive shaft in a non-rotatable connection, and in the rotation position, the first end of the flange is connected to the drive shaft. Shaft end disengaged.
通过采用以上的技术方案，可实现以下的有益技术效果：By adopting the above technical solutions, the following beneficial technical effects can be achieved:
1）用于装夹工作元件的夹装机构具有工作元件夹紧位置、旋转位置及释放位置，与现有的只具有夹紧和释放位置的夹装机构相比，无需将工作元件取下即可实现工作元件的角度调节，省时省力。1) The clamping mechanism used for clamping the working element has a clamping position, a rotating position and a releasing position of the working element. Compared with the existing clamping mechanism which only has the clamping and releasing positions, it is not necessary to remove the working element The angle adjustment of the working components can be realized, saving time and effort.
2）夹装机构包含紧固元件、锁紧组件及操作件，锁紧组件与紧固元件之间以形锁合的连接方式锁定，可快速而可靠地将工作元件紧固到输出轴上，而无需使用诸如扳手等的辅助工具，区别于现有技术中螺纹旋紧的连接方式，能够实现较强的夹紧力，即使在例如通过振动驱动器驱动的工具中出现的冲击情况下，该夹紧力也足以确保可靠而牢固地将工作元件夹紧。2) The clamping mechanism includes a fastening component, a locking component and an operating part. The locking component and the fastening component are locked in a form-locking connection, which can quickly and reliably fasten the working component to the output shaft. Without using auxiliary tools such as wrenches, it is different from the threaded connection method in the prior art, and can achieve a strong clamping force, even in the case of impacts such as those that occur in tools driven by vibration drivers. The clamping force is also sufficient to ensure reliable and firm clamping of working components.
3）操作件具有与夹装机构的旋转位置对应的动作位置，操作简易、方便、手感强。3) The operating part has an action position corresponding to the rotation position of the clamping mechanism, which is easy and convenient to operate and has a strong hand feeling.
附图说明Description of drawings
图1a是本发明的动力工具处于其工作元件被夹紧状态时的示意图，此时，夹装机构处于夹紧位置上；Fig. 1a is a schematic diagram of the power tool of the present invention when its working element is clamped, at this time, the clamping mechanism is in the clamping position;
图1b是图1a的外部视图；Figure 1b is an external view of Figure 1a;
图2a是本发明的动力工具处于其工作元件可旋转调整角度时的状态示意图，此时，夹装机构处于可旋转位置上；Fig. 2a is a schematic diagram of the state of the power tool of the present invention when its working element can be rotated to adjust the angle, at this time, the clamping mechanism is in a rotatable position;
图2b是图2a的外部视图；Figure 2b is an external view of Figure 2a;
图3a是本发明的动力工具处于其工作元件可被取下时的状态示意图，此时，夹装机构处于释放位置上；Fig. 3a is a schematic diagram of the state of the power tool of the present invention when its working element can be removed, at this time, the clamping mechanism is in the release position;
图3b是图3a的外部视图；Figure 3b is an external view of Figure 3a;
图4a是工作元件被夹紧状态时的半剖图，此时，操作件处于第一动作位置上；Fig. 4a is a half-sectional view of the working element when it is clamped, and at this moment, the operating member is in the first action position;
图4b是工作元件可旋转调整角度时的半剖图，此时，操作件处于第二动作位置上；Figure 4b is a half-sectional view of the working element when it can be rotated to adjust the angle, at this time, the operating member is in the second action position;
图4c是工作元件可被取下时的半剖图，此时，操作件处于第三动作位置上；Fig. 4c is a half-sectional view when the working element can be taken off, at this moment, the operating member is in the third action position;
图5是本发明的动力工具在其驱动心轴内还设有作用在内法兰上的小弹簧的示意图；Fig. 5 is the schematic view that the power tool of the present invention is also provided with a small spring acting on the inner flange in its drive spindle;
图6是本发明的动力工具的夹装机构的另一种实施例；Fig. 6 is another embodiment of the clamping mechanism of the power tool of the present invention;
图7是夹装机构的爆炸图。Fig. 7 is an exploded view of the clamping mechanism.
具体实施方式detailed description
下面结合附图对本发明的具体实施方式作进一步详细的说明。The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.
如图1a至图4c及图7所示，本发明优选一种以振荡的方式驱动工作元件17的动力工具1进行说明，动力工具1的动力驱动轴由轴承6、20支撑并在振动支架8的作用下绕其轴线Y以小偏摆角高频的往复摆动，驱动轴被构造成支撑轴颈7部分及中空心轴15部分，振动支架8过盈压装在支撑轴颈7上，支撑轴颈7与中空心轴15过盈压装。As shown in Fig. 1a to Fig. 4c and Fig. 7, the present invention is preferably described as a power tool 1 that drives the working element 17 in an oscillating manner. Under the action of the axis Y, it reciprocates at a high frequency with a small yaw angle. The drive shaft is configured to support the journal 7 and the hollow shaft 15. The vibration bracket 8 is press-fitted on the support journal 7 to support The journal 7 and the hollow mandrel 15 are press-fitted with interference.
工作元件17通过夹装机构可快速的夹装到动力工具1上，夹装机构包含一紧固元件18及锁定该紧固元件18的锁紧组件。其中，紧固元件18被构造成法兰部181及实质上垂直于法兰部181的夹紧轴182，夹紧轴182可插入到心轴15内并被锁紧组件锁紧或松开；锁紧组件包含压环23、锁紧块10及钢球11，压环23套设在心轴15外，压环23上设有孔231，孔231内安装有销12，销12穿过心轴15上的沿轴向方向上开设的长槽151，销12穿过压环23的孔231和工作心轴15的长槽151后，再套上压环套24，可防止销12滑出，同时销12可在压杆5力的作用下同压环23一同在轴向上的长槽151内移动。大弹簧13在心轴15内被销12抵住，锁紧块10和夹紧轴182啮合的部位处设有形锁合结构，该形锁合结构可被构造为环形槽或齿。The working element 17 can be quickly clamped to the power tool 1 through the clamping mechanism, and the clamping mechanism includes a fastening element 18 and a locking assembly for locking the fastening element 18 . Wherein, the fastening element 18 is configured as a flange portion 181 and a clamping shaft 182 substantially perpendicular to the flange portion 181, the clamping shaft 182 can be inserted into the spindle 15 and locked or released by the locking assembly; The locking assembly includes a pressure ring 23, a locking block 10 and a steel ball 11. The pressure ring 23 is sleeved outside the mandrel 15. The pressure ring 23 is provided with a hole 231. The pin 12 is installed in the hole 231, and the pin 12 passes through the mandrel. 15 along the long groove 151 opened in the axial direction, after the pin 12 passes through the hole 231 of the pressure ring 23 and the long groove 151 of the working mandrel 15, the pressure ring sleeve 24 is put on to prevent the pin 12 from slipping out. At the same time, the pin 12 can move in the long slot 151 in the axial direction together with the pressure ring 23 under the force of the pressure rod 5 . The big spring 13 is resisted by the pin 12 in the mandrel 15, and a form-locking structure is provided at the engaging position of the locking block 10 and the clamping shaft 182, and the form-locking structure can be configured as an annular groove or a tooth.
锁紧块10优选为2个，其相对夹紧轴182对称设置，并在径向和轴向上都可以有一定位移，具体实现方式是：轴向上，锁紧块10下端被两个销12推动着，达到上限被支撑轴颈7的下表面71限位；上端被压簧9偏压，下限时被固定在支撑轴颈7上的限位板限位（未示出）。径向上，两个锁紧块10可被钢球11推动着靠拢，也可在夹紧轴182拉力作用下分开，因为压环23上端有一斜面232，钢球能沿压环斜面232和直面233滚动。钢球沿压环直面233滚动时，两锁紧块10靠拢，锁紧块10和夹紧轴182啮合；钢球11沿压环斜面232滚动时，两锁紧块10分开，夹紧轴182和锁紧块10脱开啮合。There are preferably two locking blocks 10, which are symmetrically arranged relative to the clamping shaft 182, and can have a certain displacement in the radial and axial directions. 12 pushes and reaches the upper limit and is limited by the lower surface 71 of the support journal 7; the upper end is biased by the compression spring 9, and the lower limit is limited by the limit plate (not shown) fixed on the support journal 7. In the radial direction, the two locking blocks 10 can be pushed closer by the steel ball 11, and can also be separated under the tension of the clamping shaft 182, because there is an inclined surface 232 on the upper end of the pressing ring 23, and the steel ball can move along the inclined surface 232 and the straight surface 233 of the pressing ring. scroll. When the steel ball rolls along the straight surface 233 of the pressure ring, the two locking blocks 10 move closer together, and the locking block 10 engages with the clamping shaft 182; Disengage with locking block 10.
本发明的动力工具还包含可供人手对夹装机构进行操作的操作组件，操作组件包含操作扳手2、偏心块3、枢转4及压杆5，其中，扳手2、偏心块3和枢轴4过盈装配，枢轴4可绕机壳1′转动，相应地扳手2和偏心块3也可以绕机壳1′转动，偏心块3与压杆5的接触面由多段线条组成。压杆5上端可被偏心块3推动，压杆5下端抵住压环套24，压杆5可上下移动，向下移动时能推动压环23下行。The power tool of the present invention also includes an operating assembly that can be operated by hand on the clamping mechanism. The operating assembly includes an operating wrench 2, an eccentric block 3, a pivot 4, and a pressing rod 5, wherein the wrench 2, the eccentric block 3, and the pivot 4 Interference assembly, the pivot 4 can rotate around the casing 1', correspondingly the wrench 2 and the eccentric block 3 can also rotate around the casing 1', and the contact surface between the eccentric block 3 and the pressure rod 5 is composed of multiple lines. The upper end of the depression rod 5 can be promoted by the eccentric block 3, and the lower end of the depression rod 5 is against the pressure ring sleeve 24, and the depression rod 5 can move up and down, and can promote the pressure ring 23 to go down when moving down.
本实施方式中，在心轴15的轴端与夹装机构的紧固元件18之间还设置有法兰组件，法兰组件可沿动力输出轴的轴线Y的方向移动并可绕该轴线Y进行转位调节，法兰组件包含内法兰16及内法兰管14，内法兰管14压装入内法兰16，二者又可以是一体的。内法兰管14可被销12推动着，内法兰16具有和心轴15适配的第一端163及用于将工作元件17夹紧到紧固元件18的法兰部181上的第二端164，第一端163上设有可与心轴15下端的凹槽152适配到一起的凸台161。第二端164上设有驱动工作元件17周向摆动的扭力驱动结构，该扭力驱动结构可以为凸起165，内法兰管14和内法兰16轴向上向下的限位由箍在内法兰管14上的挡圈19实现。挡圈19能抵在心轴15内表面上，防止内法兰管14连同内法兰16从心轴15上滑出。In this embodiment, a flange assembly is also provided between the shaft end of the mandrel 15 and the fastening element 18 of the clamping mechanism. The flange assembly can move along the axis Y of the power output shaft and can move around the axis Y. For position adjustment, the flange assembly includes an inner flange 16 and an inner flange tube 14, the inner flange tube 14 is press-fitted into the inner flange 16, and the two can be integrated. The inner flange tube 14 can be pushed by the pin 12, the inner flange 16 has a first end 163 adapted to the mandrel 15 and a second end for clamping the working element 17 to the flange portion 181 of the fastening element 18. Two ends 164 , the first end 163 is provided with a boss 161 which can be fitted with the groove 152 at the lower end of the mandrel 15 . The second end 164 is provided with a torque driving structure that drives the working element 17 to swing in the circumferential direction. The torque driving structure can be a protrusion 165, and the inner flange tube 14 and the inner flange 16 are axially and downwardly limited by a hoop. Back-up ring 19 on the inner flange pipe 14 realizes. The retaining ring 19 can be against the inner surface of the mandrel 15 to prevent the inner flange tube 14 and the inner flange 16 from slipping out of the mandrel 15 .
下面详细介绍本发明的动力工具夹装工作元件的过程及原理：The process and principle of clamping working components of the power tool of the present invention are introduced in detail below:
夹紧状态：见图1a、图1b，偏心块3和压杆5脱开接触，因而压环23上端是自由的，所以在大弹簧13的作用下，啮合着夹紧轴182的锁紧块10被偏压，夹紧轴182有被上提的趋势，从而将工作元件17压紧在内法兰16和紧固元件18之间，达到夹紧工作元件的目的。此时，夹紧轴182处于被锁紧块10锁定的第一锁定位置上。Clamping state: see Figure 1a and Figure 1b, the eccentric block 3 and the pressure rod 5 are out of contact, so the upper end of the pressure ring 23 is free, so under the action of the large spring 13, the locking block of the clamping shaft 182 is engaged 10 is biased, and the clamping shaft 182 tends to be lifted up, thereby pressing the working element 17 between the inner flange 16 and the fastening element 18 to achieve the purpose of clamping the working element. At this time, the clamping shaft 182 is in the first locking position locked by the locking block 10 .
旋转状态：扳动扳手2到图2a、图2b状态时，因偏心块4上有一小段直面，扳手2到达此位置时，手感很强，将不太容易继续扳动扳手。这时，内法兰16下移，使得内法兰16和心轴15脱开啮合。同时，因钢球11仍抵在压环23的直面233上而无法沿径向向外滚动，所以锁紧块10仍和夹紧轴182啮合，因啮合的结构是环形槽，所以可以转动内法兰16，来改变工作元件17相对动力工具1的方向，实现工作元件角度调节的目的。此时工作元件17仍被夹紧在内法兰16和紧固元件18之间，夹紧轴182处于不能相对锁紧块10在轴向上移动的第二锁定位置上，只是紧固元件18、工作元件17、内法兰16和内法兰管14可绕心轴15的轴向转动。Rotation state: when the wrench 2 is turned to the state shown in Fig. 2a and Fig. 2b, because the eccentric block 4 has a small straight face, when the wrench 2 reaches this position, the hand feel is very strong, and it will not be easy to continue to pull the wrench. At this time, the inner flange 16 moves down, so that the inner flange 16 and the mandrel 15 are disengaged. At the same time, because the steel ball 11 is still against the straight face 233 of the pressure ring 23 and cannot roll outward in the radial direction, the locking block 10 is still engaged with the clamping shaft 182. Because the engaged structure is an annular groove, the inner ring can be rotated. The flange 16 is used to change the direction of the working element 17 relative to the power tool 1 to achieve the purpose of adjusting the angle of the working element. At this time, the working element 17 is still clamped between the inner flange 16 and the fastening element 18, and the clamping shaft 182 is in the second locked position that cannot move axially relative to the locking block 10, and only the fastening element 18 , the working element 17 , the inner flange 16 and the inner flange tube 14 can rotate around the axial direction of the mandrel 15 .
释放状态：扳动扳手2到图3a、图3b状态时，偏心块4将压杆5最大限度地压下，压杆5推压环23，压环23推动销12，销12推着内法兰16下行。另外，因此时的锁紧块10下端自由，上端被压簧9偏压，最后被限位板（未示出）限位。这时，向下拉紧固元件18，由于夹紧轴182和锁紧块10啮合的环形槽具有斜面，手对夹紧轴182拉力的作用，使得锁紧块10径向上移动开，紧固元件18可以拔出，从而能取下工作元件17。锁紧块10能径向向外移动是因为钢球11滚入了压环的斜面232处，为锁紧块10径向移动腾出了空间。Released state: When the wrench 2 is turned to the state shown in Figure 3a and Figure 3b, the eccentric block 4 will push down the pressure rod 5 to the maximum, the pressure rod 5 will push the ring 23, the pressure ring 23 will push the pin 12, and the pin 12 will push the inner method Lan 16 goes down. In addition, at this time, the lower end of the locking block 10 is free, the upper end is biased by the compression spring 9, and finally is limited by the limiting plate (not shown). At this time, the fastening element 18 is pulled down, because the annular groove engaged with the clamping shaft 182 and the locking block 10 has an inclined surface, the pulling force of the hand on the clamping shaft 182 makes the locking block 10 move radially away, and the fastening element 18 can be pulled out so that the working element 17 can be removed. The reason why the locking block 10 can move radially outward is that the steel ball 11 has rolled into the inclined surface 232 of the pressure ring, making room for the radial movement of the locking block 10 .
本实施例中，心轴15和内法兰16的适配端面上分别设有相互匹配的具有一定斜度的凹槽152及凸台161，能使两零件紧密啮合，无间隙，而且随着凸台161的磨损，仍能补偿间隙，紧密配合。In this embodiment, the matching end surfaces of the mandrel 15 and the inner flange 16 are respectively provided with matching grooves 152 and bosses 161 with a certain slope, so that the two parts can be tightly engaged without gaps, and as the The wear of the boss 161 can still compensate for the clearance and closely fit.
由图1a、1b及图4a可看出，夹紧状态时，内法兰16的凸台161和心轴15的凹槽152完全啮合。It can be seen from Fig. 1a, 1b and Fig. 4a that in the clamped state, the boss 161 of the inner flange 16 is fully engaged with the groove 152 of the mandrel 15.
由图2a、2b及图4b可看出，内法兰16凸台161的最高点低于心轴15上的形成于凹槽152之间的凸台的最高点，即内法兰16和心轴15脱开啮合，二者间可以有相对转动，这时转动紧固元件18的夹紧轴182、工作元件17和内法兰16组件，就可以改变工作元件17相对动力工具1的方向，实现工作元件角度调节的目的。若要旋转后，再夹紧，可直接反向扳动扳手2，会自动夹紧。实现方式是：即使内法兰16的凸台161没有完全对准心轴15端面上的凹槽152，由于凸台161的特殊设计，在大弹簧13的作用下，内法兰16的凸台161仍能滑入心轴15端面上的凹槽152内。As can be seen from Figures 2a, 2b and 4b, the highest point of the boss 161 of the inner flange 16 is lower than the highest point of the boss formed between the grooves 152 on the mandrel 15, that is, the inner flange 16 and the center. The shaft 15 is disengaged, and there can be relative rotation between the two. At this time, the clamping shaft 182 of the fastening element 18, the working element 17 and the inner flange 16 are rotated to change the direction of the working element 17 relative to the power tool 1. The purpose of adjusting the angle of the working element is realized. If you want to tighten after rotation, you can directly pull the wrench 2 in the opposite direction, and it will be automatically clamped. The implementation method is: even if the boss 161 of the inner flange 16 is not completely aligned with the groove 152 on the end face of the mandrel 15, due to the special design of the boss 161, under the action of the large spring 13, the boss of the inner flange 16 will 161 can still slide into the groove 152 on the end face of the mandrel 15.
如图5所示，在上述实施方式中进一步地在销12和内法兰16之间还设有一个小弹簧21，小弹簧21的一端顶在销12上，另一端顶在法兰管14上设有的突出台阶上，设置了该小弹簧21可以确保在夹紧位置时，法兰管14上端和销12不接触，有空间让大弹簧13压紧锁紧块10；在旋转位置时，法兰管14上端和销12还是不接触，由小压簧9推动法兰管14和内法兰16下移与心轴15端部的凸台脱开，同时保证内法兰16有一定压力压住工作元件17，旋转时就产生阻尼，工作元件17可以停在任意角度；在释放位置时，法兰管14上端和销12开始接触，确保装工作元件17时，轴向压工作元件17，内法兰16不能移动，也就不能和心轴15端面凸台啮合，这样在夹紧位置时内法兰16轴向位置每次都一样，确保下次在旋转位置时内法兰16能自由旋转。As shown in FIG. 5 , in the above embodiment, a small spring 21 is further provided between the pin 12 and the inner flange 16 , one end of the small spring 21 rests on the pin 12 , and the other end rests on the flange tube 14 On the protruding step provided on the top, the small spring 21 is set to ensure that the upper end of the flange tube 14 does not contact the pin 12 when in the clamping position, and there is space for the large spring 13 to press the locking block 10; when in the rotating position , the upper end of the flange tube 14 is still not in contact with the pin 12, and the small compression spring 9 pushes the flange tube 14 and the inner flange 16 to move down and disengage from the boss at the end of the mandrel 15, while ensuring that the inner flange 16 has a certain The pressure presses the working element 17, and damping occurs when it rotates, and the working element 17 can stop at any angle; when it is in the release position, the upper end of the flange tube 14 comes into contact with the pin 12, ensuring that when the working element 17 is installed, the working element is pressed axially 17. The inner flange 16 cannot be moved, so it cannot be engaged with the boss on the end face of the mandrel 15, so that the axial position of the inner flange 16 is the same every time in the clamping position, ensuring that the inner flange 16 is in the rotating position next time Can spin freely.
图6是本发明动力工具可实现工作元件转位的旋转头的另一种实施例。Fig. 6 is another embodiment of the rotating head capable of indexing the working element of the power tool of the present invention.
与上述实施例相同的结构及附图标记不赘述，下面详细介绍与上述实施例不同的三处：The same structure and reference numerals as those of the above-mentioned embodiment will not be described in detail, and the following three points that are different from the above-mentioned embodiment will be introduced in detail:
第一处：操作组件包含凸轮扳手2′、拨叉5′, 凸轮扳手2′的偏心面由多段组成，旋转凸轮扳手2′，凸轮扳手2′的偏心面推动拨叉5′转动，拨叉5′推动压环23移动。The first place: the operating assembly includes a cam wrench 2' and a shift fork 5'. The eccentric surface of the cam wrench 2' is composed of multiple sections. When the cam wrench 2' is rotated, the eccentric surface of the cam wrench 2' pushes the shift fork 5' to rotate, and the shift fork 5' pushes the pressure ring 23 to move.
第二处：推动内法兰16脱开与心轴15的啮合，由销12推内法兰管14的方式变成了由销12推动限位套14′及限位套内的弹簧27偏压内法兰16，将内法兰16顶出，使得内法兰16与心轴15脱开啮合。其中，弹簧27上端被限位套14′限位，下端抵在垫片28上，垫片28置于内法兰16的顶部。本实施方式中，内法兰由弹簧弹出，使得销12下移时不和限位套14′刚性接触，同时，内法兰16一直有弹性力的作用，因此，在旋转工作元件17时，内法兰16有阻尼力，工作元件17可以停在任何一个位置，手感好。The second place: Push the inner flange 16 to disengage from the engagement with the mandrel 15, and the method of pushing the inner flange tube 14 by the pin 12 becomes the push of the pin 12 to push the limit sleeve 14' and the spring 27 in the limit sleeve to deflect. Press the inner flange 16 to push out the inner flange 16 so that the inner flange 16 is disengaged from the mandrel 15 . Wherein, the upper end of the spring 27 is limited by the limiting sleeve 14 ′, and the lower end is against the washer 28 , and the washer 28 is placed on the top of the inner flange 16 . In this embodiment, the inner flange is ejected by the spring, so that the pin 12 does not rigidly contact with the limit sleeve 14' when it moves down. At the same time, the inner flange 16 always has the effect of elastic force. The inner flange 16 has a damping force, and the working element 17 can stop at any position with good hand feeling.
第三处：内法兰16和心轴15的啮合方式不同，结合图6，内法兰16的突起161′均匀分布在上表面，且突起呈类似圆柱形状，而心轴15下端有容纳内法兰突起的凹坑152′，将内法兰的突起伸入心轴15凹坑中，实现二者啮合，防止二者间相对转动。The third place: the engagement mode between the inner flange 16 and the mandrel 15 is different. Referring to FIG. 6, the protrusions 161' of the inner flange 16 are evenly distributed on the upper surface, and the protrusions are similar to a cylindrical shape, and the lower end of the mandrel 15 has an inner The recess 152' of the flange protrusion extends the protrusion of the inner flange into the recess of the mandrel 15 to realize the engagement of the two and prevent the relative rotation between the two.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110128114.0ACN102785162B (en) | 2011-05-18 | 2011-05-18 | Power tool |
| US13/471,599US9174354B2 (en) | 2011-05-18 | 2012-05-15 | Power tool |
| DE202012101783UDE202012101783U1 (en) | 2011-05-18 | 2012-05-15 | power tool |
| GB1208668.2AGB2491032B (en) | 2011-05-18 | 2012-05-17 | Power tool |
| FR1254551AFR2975324B3 (en) | 2011-05-18 | 2012-05-18 | POWER TOOL |
| US14/927,680US9764444B2 (en) | 2011-05-18 | 2015-10-30 | Power tool |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110128114.0ACN102785162B (en) | 2011-05-18 | 2011-05-18 | Power tool |
| Publication Number | Publication Date |
|---|---|
| CN102785162A CN102785162A (en) | 2012-11-21 |
| CN102785162Btrue CN102785162B (en) | 2015-03-11 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110128114.0AExpired - Fee RelatedCN102785162B (en) | 2011-05-18 | 2011-05-18 | Power tool |
| Country | Link |
|---|---|
| CN (1) | CN102785162B (en) |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US12109666B2 (en)* | 2017-08-11 | 2024-10-08 | Robert Bosch Gmbh | Quick clamping device for a portable power tool, in particular an angle grinder, having in particular at least one output shaft that is drivable in rotation |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104070187B (en)* | 2013-03-27 | 2016-10-05 | 苏州宝时得电动工具有限公司 | A kind of main axle structure of oscillating machine |
| CN103317190B (en)* | 2013-06-20 | 2015-07-15 | 浙江通达电器有限公司 | Multifunctional saw chuck device of fast clamping saw blade |
| CN105829032B (en)* | 2013-09-12 | 2018-04-10 | 罗伯特·博世有限公司 | Locking mechanism for articulated vibrating power tools |
| JP7075300B2 (en)* | 2018-07-14 | 2022-05-25 | 株式会社マキタ | Work tools |
| CN112847259B (en)* | 2019-11-26 | 2022-12-06 | 苏州宝时得电动工具有限公司 | Power tool and clamping device thereof |
| JP7422538B2 (en)* | 2019-12-26 | 2024-01-26 | 株式会社マキタ | Work tools |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090023371A1 (en)* | 2007-07-19 | 2009-01-22 | Juergen Blickle | Power-Driven Hand Tool |
| DE202009001440U1 (en)* | 2009-01-30 | 2010-07-01 | C. & E. Fein Gmbh | Powered hand tool with clamping device for a tool |
| CN201736205U (en)* | 2010-07-12 | 2011-02-09 | 苏州宝时得电动工具有限公司 | Power tool |
| CN201736204U (en)* | 2010-07-12 | 2011-02-09 | 苏州宝时得电动工具有限公司 | Power tool |
| CN201824333U (en)* | 2010-10-09 | 2011-05-11 | 南京德朔实业有限公司 | Power tool provided with working component clamping device |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7856724B2 (en)* | 2000-08-17 | 2010-12-28 | Hilti Aktiengesellschaft | Electrical power tool with a rotatable working tool |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090023371A1 (en)* | 2007-07-19 | 2009-01-22 | Juergen Blickle | Power-Driven Hand Tool |
| DE202009001440U1 (en)* | 2009-01-30 | 2010-07-01 | C. & E. Fein Gmbh | Powered hand tool with clamping device for a tool |
| CN201736205U (en)* | 2010-07-12 | 2011-02-09 | 苏州宝时得电动工具有限公司 | Power tool |
| CN201736204U (en)* | 2010-07-12 | 2011-02-09 | 苏州宝时得电动工具有限公司 | Power tool |
| CN201824333U (en)* | 2010-10-09 | 2011-05-11 | 南京德朔实业有限公司 | Power tool provided with working component clamping device |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US12109666B2 (en)* | 2017-08-11 | 2024-10-08 | Robert Bosch Gmbh | Quick clamping device for a portable power tool, in particular an angle grinder, having in particular at least one output shaft that is drivable in rotation |
| Publication number | Publication date |
|---|---|
| CN102785162A (en) | 2012-11-21 |
| Publication | Publication Date | Title |
|---|---|---|
| CN102785162B (en) | Power tool | |
| CN102441876B (en) | Power tool with work element clamping device | |
| CN100574993C (en) | Hand-held power tool with tool clamping device | |
| US9764444B2 (en) | Power tool | |
| CN102233537B (en) | Hand-held power tool with quick clamping device for working element | |
| CN102896619B (en) | Power tool and operation method thereof | |
| CN102785161B (en) | Power tool | |
| US9050663B2 (en) | Hand-held power tool with a quick-clamping device for a working element | |
| US8960688B2 (en) | Power tool | |
| WO2012006948A1 (en) | Power tool | |
| WO2013097297A1 (en) | Power tool | |
| US20140202292A1 (en) | Torque wrench with functional lock | |
| US6637756B2 (en) | Power drill chuck | |
| WO2009152768A1 (en) | Foldable connector for pipe fittings and locking device | |
| CN101848788A (en) | Quick-change system | |
| JP2006326831A (en) | Clamp structure for tool with handle | |
| US10682736B2 (en) | Accessory clamp and spindle lock mechanism for power tool | |
| WO2021103878A1 (en) | Power tool and clamping device thereof | |
| CN108213478B (en) | Drill chuck capable of increasing loosening torque | |
| CN204546465U (en) | Power tool | |
| CN201913628U (en) | Power tool with workpiece clamping device | |
| WO2012006867A1 (en) | Power tool | |
| CN106002857B (en) | A kind of attachment means of quick-replaceable work head | |
| TWM545094U (en) | Bicycle quick release structure | |
| CN103182705B (en) | Power tool |
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | Address after:211106 No. 529, 159, Jiangjun Avenue, Jiangning District, Nanjing, Jiangsu Province Patentee after:Nanjing Quanfeng Technology Co.,Ltd. Address before:211106, No. 159, general road, Jiangning economic and Technological Development Zone, Nanjing, Jiangsu Patentee before:NANJING CHERVON INDUSTRY Co.,Ltd. | |
| CP03 | Change of name, title or address | ||
| CF01 | Termination of patent right due to non-payment of annual fee | Granted publication date:20150311 | |
| CF01 | Termination of patent right due to non-payment of annual fee |