CN218397875U - Single-rotation pneumatic tool - Google Patents

Abstract

The utility model discloses a single pneumatic tool that changes, including a body, a cylinder body and a rotor. The body comprises a containing chamber, an air inlet channel and an air exhaust channel, wherein the containing chamber is communicated between the air inlet channel and the air exhaust channel. The cylinder body is arranged in the accommodating chamber and comprises a cylinder chamber, an air inlet part and an air outlet part, the air inlet part is communicated between the air inlet channel and the cylinder chamber, the air outlet part is communicated between the cylinder chamber and the air outlet channel, and the air outlet part comprises a plurality of first air outlet holes and a plurality of second air outlet holes which are arranged at intervals; the rotor is accommodated in the cylinder chamber and can rotate around an axial direction, and compressed gas can be rapidly exhausted out of the body by virtue of two exhaust holes which are arranged at intervals in the exhaust part, so as to prevent negative pressure from being generated, and further greatly improve the torque output value of the pneumatic tool.

Description

Single-rotation pneumatic tool

Technical Field

The utility model relates to a single pneumatic tool that changes.

Background

Accordingly, the pneumatic tool is one of the assembling tools commonly used in the factory, which is used to screw or unscrew the fastening components such as nut and bolt, and is popular among many workers. The general pneumatic tool includes a rotating mechanism and a casing, the casing includes a front casing and a back casing, the back casing accommodates the rotating mechanism, and the back end of the back casing is provided with an air inlet channel, the rotating mechanism has a cylinder and a rotating mechanism accommodated in the cylinder, the cylinder is provided with a forward rotation air inlet channel and a reverse rotation air inlet channel, and the switching piece for switching the air inlet channel is used to control the air to enter the forward rotation air inlet channel or the reverse rotation air inlet channel.

However, for example, the working characteristics of some production lines usually only need to use a forward screwing function or a reverse unscrewing function, and in order to satisfy the common usage of various working types, a rotation mechanism is usually designed to be capable of switching between forward rotation and reverse rotation, but in the conventional forward and reverse designed pneumatic tool, the air cylinder tends to be balanced in air intake and exhaust structures, so that the torque of the known pneumatic tool cannot be maximized, and when only a single worker needs to rotate forward or reverse, the maximized screwing or unscrewing torque output operation cannot be obtained, which is a disadvantage to be improved.

Therefore, there is a need for a new and improved single-turn pneumatic tool to solve the above-mentioned problems.

SUMMERY OF THE UTILITY MODEL

A primary object of the present invention is to provide a single-turn pneumatic tool, which has a strong cylinder strength to improve the torque and durability of the rotation.

To achieve the above object, the present invention provides a single-rotation pneumatic tool, which comprises a body, a cylinder body and a rotor. The body comprises a containing chamber, an air inlet channel and an exhaust channel, wherein the containing chamber is communicated between the air inlet channel and the exhaust channel. The cylinder body is arranged in the accommodating chamber and comprises a cylinder chamber, an air inlet part and an air outlet part, the air inlet part is communicated between the air inlet channel and the cylinder chamber, the air outlet part is communicated between the cylinder chamber and the air outlet channel, and the air outlet part comprises a plurality of first air outlet holes and a plurality of second air outlet holes which are arranged at intervals; the rotor is accommodated in the cylinder chamber and can rotate around an axial direction, and compressed gas can be quickly discharged out of the body by virtue of two exhaust holes which are formed at intervals in the exhaust part, so that negative pressure is prevented from being generated, and the torque output value of the pneumatic tool is greatly improved.

The air inlet part is arranged at one side of the cylinder chamber in the radial direction, and the air outlet part is arranged at the other side of the cylinder chamber.

Viewed along the axial direction, one end of the cylinder body in the radial direction is provided with a first end with the largest wall thickness, the other end of the cylinder body is provided with a second end with the smallest wall thickness, and the air inlet part is arranged at the first end.

Viewed along the axial direction, a median line passing through the first end, the axial center and the second end is defined, the air inlet portion is located on one side of the median line, and the air outlet portion is located on the other side of the median line.

The air inlet part comprises at least one guide groove, and each guide groove is concavely arranged on one end surface of the cylinder body along the axial direction.

One end of each flow guide groove along the circumferential direction is gradually reduced.

The air inlet part comprises two flow guide grooves which are correspondingly arranged at two opposite ends of the cylinder body along the axial direction, wherein one flow guide groove is communicated with the air inlet channel, and an air guide channel extending along the axial direction is communicated between the two flow guide grooves.

These first exhaust holes are the round hole and arrange along the axial of this cylinder block, and these second exhaust holes are along the arc hole of circumference extension and arrange along the axial of this cylinder block.

The air inlet channel is provided with a valve chamber, the valve chamber is fixedly provided with a valve piece, the valve chamber is communicated with the air inlet part, the body further comprises a driving head, and the driving head is connected with the rotor.

The air inlet part comprises at least one flow guide groove, and each flow guide groove is concavely arranged on one end surface of the cylinder body along the axial direction; one end of each flow guide groove along the circumferential direction is gradually reduced; the air inlet part comprises two flow guide grooves which are correspondingly arranged at two opposite ends of the cylinder body along the axial direction, wherein one flow guide groove is communicated with the air inlet flow passage; an air guide channel extending along the axial direction is communicated between the two flow guide grooves; the first exhaust holes are round holes and are arranged along the axial direction of the cylinder body, and the second exhaust holes are arc-shaped holes extending along the circumferential direction and are arranged along the axial direction of the cylinder body; the air inlet flow passage is provided with a valve chamber, a valve piece is fixedly arranged in the valve chamber, and the valve chamber is communicated with the air inlet part; the body further comprises a driving head which is assembled with the rotor; the exhaust part also comprises a plurality of third exhaust holes which are arranged at the first end and are arranged along the axial direction of the cylinder body, and the third exhaust holes are positioned at the other side of the bisector opposite to the air inlet part.

The utility model has the advantages that: the utility model discloses stronger cylinder intensity has to improve rotatory torsion and durability.

Drawings

Fig. 1 is a perspective view of a preferred embodiment of the present invention.

Fig. 2 is an exploded view of a preferred embodiment of the present invention.

Fig. 3 is a partial side sectional view of a preferred embodiment of the present invention.

Fig. 4 is a cross-sectional bottom view of fig. 3.

Fig. 5 is a front sectional view of a preferred embodiment of the present invention.

Fig. 6 and 7 are perspective views of a cylinder block according to a preferred embodiment of the present invention.

1: main body

11 the chamber

12: air inlet channel

121: valve chamber

122 valve element

13, exhaust channel

14 driving head

2: cylinder body

21: cylinder chamber

22 air inlet part

221: flow guide groove

222 air guide channel

23 exhaust part

231 first exhaust hole

232 second exhaust hole

233 third exhaust hole

24 first end

25 second end

26: middle dividing line

3: rotor

Detailed Description

The following description is given by way of example only, and not by way of limitation, to the extent that the present invention is intended to be limited.

Referring to fig. 1 to 7, a preferred embodiment of the present invention is shown, in which a single-turn pneumatic tool of the present invention includes amain body 1, acylinder body 2 and arotor 3.

Themain body 1 includes achamber 11, aninlet channel 12 and anoutlet channel 13, wherein thechamber 11 is connected between theinlet channel 12 and theoutlet channel 13.

Thecylinder block 2 is disposed in theaccommodation chamber 11, and includes acylinder chamber 21, anintake portion 22 and anexhaust portion 23, theintake portion 22 is communicated between theintake runner 12 and thecylinder chamber 21, theexhaust portion 23 is communicated between thecylinder chamber 21 and theexhaust runner 13, and theexhaust portion 23 includes a plurality offirst exhaust holes 231 and a plurality ofsecond exhaust holes 232 disposed at intervals.

Therotor 3 is accommodated in thecylinder chamber 21 and can rotate around an axial direction, when theinlet flow channel 12 is connected to a high pressure gas source, the high pressure gas flows to theinlet portion 22 through theinlet flow channel 12, then enters thecylinder chamber 21 to drive therotor 3 to rotate, and finally flows to theexhaust flow channel 13 through theexhaust portion 23 for exhaust. In this embodiment, thebody 1 further includes adriving head 14, thedriving head 14 is assembled with therotor 3, the drivinghead 14 is assembled with a locking tool (such as a bolt, a nut, etc.), and thedriving head 14 is driven to rotate when therotor 3 rotates.

Theintake runner 12 is provided with avalve chamber 121, thevalve chamber 121 is fixedly provided with avalve element 122, thevalve chamber 121 is communicated with theintake portion 22, since thevalve element 122 is fixed in thevalve chamber 121 and cannot move, thevalve chamber 121 can be ensured to have the largest space for air to pass through, so that thecylinder chamber 21 has the largest airflow to drive therotor 3 to rotate, thereby improving the working efficiency, and since thecylinder block 2 is only provided with theintake portion 22, thecylinder block 2 can have stronger structural strength to improve the durability, and the torque force for rotating therotor 3 can be improved.

In the axial view, theair inlet portion 22 is disposed on one side of thecylinder chamber 21 in the radial direction, and theair outlet portion 23 is disposed on the other side of the cylinder chamber 21 (as shown in fig. 2 and 5), so that the air entering one side of thecylinder chamber 21 through theair inlet portion 22 flows to the other side in the circumferential direction to be discharged out of thecylinder chamber 21, so as to have a large aerodynamic force.

Further, when viewed along the axial direction, one end of thecylinder block 2 in the radial direction is provided with afirst end 24 with the largest wall thickness, and the other end is provided with asecond end 25 with the smallest wall thickness, theair inlet portion 22 is disposed at thefirst end 24, since the air pressure is the largest when the air just enters thecylinder chamber 21, theair inlet portion 22 is disposed at thefirst end 24, and the wall thickness of thefirst end 24 is the largest, so that thecylinder block 2 can be prevented from being damaged due to the excessive air pressure. In detail, wherein a bisector 26 (shown in fig. 5) is defined through thefirst end 24, the axial axis and thesecond end 25 when viewed in the axial direction, theair inlet portion 22 is located at one side of thebisector 26, and theair outlet portion 23 is located at the other side of thebisector 26, so that the flow path of the air can be maximized to increase the torsion of therotor 3.

Theair inlet 22 includes at least one guidinggroove 221, each guidinggroove 221 is concavely disposed on an end surface of thecylinder block 2 along the axial direction, in this embodiment, one end of each guidinggroove 221 along the circumferential direction is tapered to guide the airflow to have a correct flowing direction. Preferably, theair inlet portion 22 includes twoflow guiding grooves 221, the twoflow guiding grooves 221 are correspondingly disposed at two opposite ends of thecylinder block 2 along the axial direction, wherein one of theflow guiding grooves 221 is communicated with theair inlet duct 12, and anair guiding channel 222 extending along the axial direction is communicated between the twoflow guiding grooves 221, so that air is communicated with the twoflow guiding grooves 221 through theair guiding channel 222 to flow into thecylinder chamber 21 from the twoflow guiding grooves 221.

It should be noted that, as shown in fig. 2 and 5, in the present embodiment, thecylinder block 2 is disposed in the chamber such that the gas and therotor 3 rotate clockwise in the view of fig. 5, and in other embodiments, the cylinder block may be disposed in the chamber in a reverse direction, and the gas and the rotor rotate counterclockwise.

In addition, thesefirst exhaust holes 231 are the round hole and along the axial arrangement of thiscylinder block 2, provide the large-traffic discharge function of the compressed gas that the rotor operation produced, thesesecond exhaust holes 232 are along the large tracts of land arc hole of circumference extension and along the axial arrangement of thiscylinder block 2, because gaseous mainly borrows thissecond exhaust holes 232 design to get into thisexhaust runner 13 fast and completely with gas by this, change again and discharge the body outside, and avoided rotor pivoted resistance to produce, in order to reduce rotor output torsion process and produce the negative pressure advantage that reduces the torsion value, the order the utility model discloses a pneumatic tool torsion can promote 20% output.

In the embodiment, theexhaust portion 23 includes a plurality of third exhaust holes 233, the third exhaust holes 233 are disposed at thefirst end 24 and are arranged along the axial direction of thecylinder block 2, the third exhaust holes 233 are disposed at the other side of themiddle dividing line 26 opposite to theintake portion 22, and when only the remaining weak residual gas is not exhausted from thecylinder chamber 21 through the second exhaust holes 232, the remaining weak residual gas can be exhausted through the third exhaust holes 233.

Claims (10)

1. A single-turn pneumatic tool, comprising: the method comprises the following steps:

the body comprises a containing chamber, an air inlet channel and an exhaust channel, wherein the containing chamber is communicated between the air inlet channel and the exhaust channel;

the cylinder body is arranged in the accommodating chamber and comprises a cylinder chamber, an air inlet part and an air outlet part, the air inlet part is communicated between the air inlet flow passage and the cylinder chamber, the air outlet part is communicated between the cylinder chamber and the air outlet flow passage, and the air outlet part comprises a plurality of first air outlet holes and a plurality of second air outlet holes which are arranged at intervals;

a rotor accommodated in the cylinder chamber and rotatable about an axial direction.

2. The single-turn pneumatic tool of claim 1, wherein: the air inlet part is arranged at one side of the cylinder chamber in the radial direction, and the air outlet part is arranged at the other side of the cylinder chamber.

3. The single-turn pneumatic tool of claim 2, wherein: viewed along the axial direction, one end of the cylinder body in the radial direction is provided with a first end with the largest wall thickness, the other end of the cylinder body is provided with a second end with the smallest wall thickness, and the air inlet part is arranged at the first end.

4. A single-turn pneumatic tool as in claim 3, wherein: viewed along the axial direction, a median line passing through the first end, the axial center and the second end is defined, the air inlet portion is located on one side of the median line, and the air outlet portion is located on the other side of the median line.

5. The single-turn pneumatic tool of claim 1, wherein: the air inlet part comprises at least one guide groove, and each guide groove is concavely arranged on one end surface of the cylinder body along the axial direction.

6. The single-turn pneumatic tool of claim 5, wherein: one end of each flow guide groove along the circumferential direction is gradually reduced.

7. The single-turn pneumatic tool of claim 5, wherein: the air inlet part comprises two flow guide grooves which are correspondingly arranged at two opposite ends of the cylinder body along the axial direction, wherein one flow guide groove is communicated with the air inlet flow channel, and an air guide channel extending along the axial direction is arranged between the two flow guide grooves in a communicated manner.

8. The single-turn pneumatic tool of claim 1, wherein: these first exhaust holes are the round hole and arrange along the axial of this cylinder block, and these second exhaust holes are along the arc hole of circumference extension and arrange along the axial of this cylinder block.

9. The single-turn pneumatic tool of any one of claims 1 to 8, wherein: the air inlet channel is provided with a valve chamber, a valve piece is fixedly arranged in the valve chamber, the valve chamber is communicated with the air inlet part, the body further comprises a driving head, and the driving head is connected with the rotor in an assembling mode.

10. The single-turn pneumatic tool of claim 4, wherein: the air inlet part comprises at least one flow guide groove, and each flow guide groove is concavely arranged on one end surface of the cylinder body along the axial direction; one end of each flow guide groove along the circumferential direction is gradually reduced; the air inlet part comprises two flow guide grooves which are correspondingly arranged at two opposite ends of the cylinder body along the axial direction, wherein one flow guide groove is communicated with the air inlet flow passage; an air guide channel extending along the axial direction is communicated between the two flow guide grooves; the first exhaust holes are round holes and are arranged along the axial direction of the cylinder body, and the second exhaust holes are arc-shaped holes extending along the circumferential direction and are arranged along the axial direction of the cylinder body; the air inlet flow passage is provided with a valve chamber, a valve piece is fixedly arranged in the valve chamber, and the valve chamber is communicated with the air inlet part; the body further comprises a driving head which is assembled with the rotor; the exhaust part also comprises a plurality of third exhaust holes which are arranged at the first end and are arranged along the axial direction of the cylinder body, and the third exhaust holes are positioned at the other side of the bisector relative to the air inlet part.

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