TWM633903U - Single rotation pneumatic tool - Google Patents

Abstract

This creation relates to a single-turn pneumatic tool, which includes a body, a cylinder block and a rotor. The main body includes a chamber, an intake flow passage and an exhaust passage, and the chamber is connected between the intake passage and the exhaust passage. The cylinder block is located in the chamber and includes a cylinder chamber, an air intake portion and an exhaust portion, the air intake portion communicates between the intake flow channel and the cylinder chamber, and the exhaust portion communicates with the cylinder between the chamber and the exhaust flow channel, and the exhaust part includes a plurality of first exhaust holes and a plurality of second exhaust holes arranged at intervals; the rotor is accommodated in the cylinder chamber and can rotate around an axis, The compressed gas can be quickly discharged out of the body through the two exhaust holes arranged at intervals in the exhaust part to prevent the generation of negative pressure, thereby greatly increasing the torque output value of the pneumatic tool.

Description

Single Turn Air Tools

This creation is about a single-turn pneumatic tool.

Press, pneumatic tools are one of the assembly tools commonly used in general factories, which are used to tighten or loosen nuts, bolts and other fastening parts and other workpieces, and are widely loved by many workers. A general pneumatic tool includes a rotating mechanism and a shell portion, the shell portion includes a front shell and a rear shell, the rear shell accommodates the rotating mechanism, and the rear end of the rear shell is provided with an air inlet Road, the rotating mechanism has a cylinder and the rotating mechanism accommodated in the cylinder, the cylinder is provided with a forward rotation intake channel and a reverse intake channel, by switching the switching member of the intake flow channel to control the gas into the forward rotation Air channel or reverse intake channel.

However, due to the working characteristics of some production lines, it is usually only necessary to use the forward-rotating tightening function or the reverse-rotating loosening function. In order to meet the common usage of various working types, the conventional pneumatic tools often design the rotating mechanism It can be designed to switch between forward and reverse rotation, but the traditional forward and reverse design of the pneumatic tool tends to have a balanced air intake and exhaust structure. As a result, the torque of conventional pneumatic tools often cannot be maximized. When a single worker only needs to rotate forward or reverse, it is impossible to obtain the maximum tightening or unscrewing torque output operation, so there are shortcomings that need to be improved.

Therefore, it is necessary to provide a novel and progressive single-turn pneumatic tool to solve the above-mentioned problems.

The main purpose of this creation is to provide a single-turn pneumatic tool with strong cylinder strength to improve the rotating torque and durability.

To achieve the above purpose, the invention provides a single-rotation pneumatic tool, which includes a body, a cylinder block and a rotor. The main body includes a chamber, an intake flow passage and an exhaust passage, and the chamber is connected between the intake passage and the exhaust passage. The cylinder block is located in the chamber and includes a cylinder chamber, an air intake portion and an exhaust portion, the air intake portion communicates between the intake flow channel and the cylinder chamber, and the exhaust portion communicates with the cylinder between the chamber and the exhaust flow channel, and the exhaust part includes a plurality of first exhaust holes and a plurality of second exhaust holes arranged at intervals; the rotor is accommodated in the cylinder chamber and can rotate around an axis, The compressed gas can be quickly discharged out of the body through the two exhaust holes arranged at intervals in the exhaust part to prevent the generation of negative pressure, thereby greatly increasing the torque output value of the pneumatic tool.

The following examples are only used to illustrate the possible implementation of this creation, but it is not intended to limit the scope of protection of this creation, and it will be described first.

Please refer to FIGS. 1 to 7 , which show a preferred embodiment of the invention. The single-turn pneumatic tool of the invention includes a body 1 , a cylinder body 2 and a rotor 3 .

The body 1 includes a chamber 11 , an intake passage 12 and an exhaust passage 13 , the chamber 11 communicates between the intake passage 12 and the exhaust passage 13 .

The cylinder block 2 is located in the chamber 11 and includes a cylinder chamber 21, an air intake portion 22 and an exhaust portion 23. The air intake portion 22 is connected between the intake air channel 12 and the cylinder chamber 21, The exhaust portion 23 is connected between the cylinder chamber 21 and the exhaust passage 13 , and the exhaust portion 23 includes a plurality of first exhaust holes 231 and a plurality of second exhaust holes 232 arranged at intervals.

The rotor 3 is accommodated in the cylinder chamber 21 and can rotate around an axial direction. When the intake channel 12 is connected to a high-pressure gas source, the high-pressure gas flows to the intake part through the intake channel 12 22 and then enter the cylinder chamber 21 to drive the rotor 3 to rotate, and finally flow to the exhaust passage 13 through the exhaust portion 23 for exhaust. In this embodiment, the body 1 further includes a drive head 14, which is assembled with the rotor 3, and the drive head 14 is used for assembly with a locking tool (such as a bolt, a nut, etc.), by When the rotor 3 rotates, it drives the drive head 14 to rotate.

Wherein, the air intake passage 12 is provided with a valve chamber 121, and the valve chamber 121 is fixedly provided with a valve member 122, and the valve chamber 121 communicates with the air intake portion 22, since the valve member 122 is fixed on the valve chamber 121 and cannot move , can ensure that the valve chamber 121 has the largest space for gas to pass through, so that the cylinder chamber 21 has the largest air flow to drive the rotor 3 to rotate, which can improve work efficiency, and because the cylinder block 2 is only provided with one air intake portion 22 , can make the cylinder block 2 have a stronger structural strength to improve durability, and increase the torque of the rotor 3 rotation.

Wherein viewed along the axial direction, the air intake portion 22 is arranged on one radial side of the cylinder chamber 21, and the exhaust portion 23 is arranged on the other side of the cylinder chamber 21 (as shown in Figures 2 and 5), In this way, the gas enters one side of the cylinder chamber 21 through the air intake portion 22 and then flows to the other side in the circumferential direction before being discharged from the cylinder chamber 21 , so as to have greater aerodynamic force.

Further, wherein viewed along the axial direction, one radial end of the cylinder block 2 is provided with a first end 24 with a maximum wall thickness, and the other end is provided with a second end 25 with a minimum wall thickness. Gas part 22 is arranged at this first end 24, because the air pressure when gas just enters this cylinder chamber 21 is maximum, so this air intake part 22 is arranged at this first end 24 and this first end 24 is maximum wall thickness can avoid Excessive air pressure causes damage to the cylinder block 2 . In detail, wherein viewed along the direction of the axial direction, it is defined to pass through the first end 24, the axis center of the axial direction and a median line 26 (as shown in FIG. 5 ) of the second end 25. The air part 22 is located on one side of the middle dividing line 26, and the exhaust part 23 is located on the other side of the middle dividing line 26, so that the gas flow path can be maximized to increase the torque of the rotor 3.

Wherein, the air intake portion 22 includes at least one diversion groove 221, and each diversion groove 221 is recessed on one end surface of the cylinder block 2 along the axial direction. Tapered to direct the airflow to have the correct direction of flow. Preferably, the intake portion 22 includes two flow guide grooves 221, the two flow guide grooves 221 are correspondingly arranged at opposite ends of the cylinder block 2 along the axial direction, and one of the flow guide grooves 221 communicates with the The air inlet channel 12 is communicated with a gas guide channel 222 extending along the axial direction between the two guide grooves 221, so that the gas is communicated with the two guide grooves 221 through the gas guide channel 222, so as to It flows into the cylinder chamber 21 from the two guide grooves 221 .

It should be noted that, as shown in Figures 2 and 5, the configuration of the cylinder block 2 in the chamber in this embodiment makes the gas and the rotor 3 rotate clockwise from the perspective of Figure 5, and in other embodiments The cylinder block can also be set reversely in the chamber, and the gas and the rotor rotate counterclockwise.

In addition, the first exhaust holes 231 are circular holes and are arranged along the axial direction of the cylinder block 2 to provide a large flow discharge function of the compressed gas generated by the operation of the rotor. The second exhaust holes 232 are arranged along the circumferential direction. Extended large-area arc-shaped holes are arranged along the axial direction of the cylinder block 2, because the gas is mainly designed to quickly and completely discharge the gas into the exhaust flow channel 13 through the second exhaust holes 232, and then turn And it is discharged from the outside of the body, which avoids the resistance of the rotor rotation, and has the advantage of negative pressure that reduces the torque value generated during the process of reducing the output torque of the rotor, so that the torque of the pneumatic tool of this creation can increase the output value by 20%.

In this embodiment, the exhaust portion 23 may include a plurality of third exhaust holes 233, and the third exhaust holes 233 are arranged at the first end 24 and arranged along the axial direction of the cylinder block 2, and the third exhaust holes 233 Exhaust hole 233 is positioned at the other side of this midpoint line 26 relative to this air intake portion 22, when the weak residual gas that only exists does not discharge this cylinder chamber 21 through these second exhaust holes 232, can be by adding The third exhaust holes 233 are exhausted.

1: Ontology 11: Containment room 12: Inlet runner 121: valve chamber 122: Valve 13: Exhaust runner 14: Drive head 2: Cylinder block 21: Cylinder chamber 22: Air intake 221: diversion groove 222: Air channel 23: exhaust part 231: The first exhaust hole 232: Second exhaust hole 233: The third exhaust hole 24: first end 25: Second end 26: Center line 3: rotor

Fig. 1 is a perspective view of a preferred embodiment of the invention. Fig. 2 is an exploded view of a preferred embodiment of the invention. Fig. 3 is a partial side sectional view of a preferred embodiment of the invention. Fig. 4 is a sectional bottom view of Fig. 3 . Fig. 5 is a front sectional view of a preferred embodiment of the invention. Fig. 6, Fig. 7 are the perspective view of the cylinder body of a preferred embodiment of this creation.

1: Ontology

11: Containment room

12: Inlet runner

13: Exhaust runner

14: Drive head

2: Cylinder block

21: Cylinder chamber

22: Air intake

221: diversion groove

222: Air channel

23: exhaust part

24: first end

25: Second end

3: rotor

Claims (12)

A single turn air tool comprising: A body, including a chamber, an intake channel and an exhaust channel, the chamber is connected between the intake channel and the exhaust channel; A cylinder block, located in the chamber, includes a cylinder chamber, an air intake portion and an exhaust portion, the air intake portion communicates between the intake air channel and the cylinder chamber, and the exhaust portion communicates with the cylinder chamber between the cylinder chamber and the exhaust flow channel, and the exhaust portion includes a plurality of first exhaust holes and a plurality of second exhaust holes arranged at intervals; A rotor is accommodated in the cylinder chamber and can rotate around an axial direction. The single-rotation pneumatic tool as claimed in claim 1, wherein viewed along the axial direction, the air intake portion is disposed on one radial side of the cylinder chamber, and the exhaust portion is disposed on the other side of the cylinder chamber. The single-rotation pneumatic tool as described in Claim 2, wherein viewed along the axial direction, one radial end of the cylinder block is provided with a first end with a maximum wall thickness, and the other end is provided with a first end with a minimum wall thickness Two ends, the air intake portion is located at the first end. The single-rotation pneumatic tool as described in claim 3, wherein viewed along the axial direction, the air inlet portion is defined as a midline passing through the first end, the axial center and the second end. Located on one side of the middle line, the exhaust portion is located on the other side of the middle line. The single-rotation pneumatic tool as claimed in claim 1, wherein the air intake portion includes at least one guide groove, and each guide groove is recessed on one end surface of the cylinder block along the axial direction. The single-rotation pneumatic tool as claimed in claim 5, wherein one end of each guide groove is tapered along the circumferential direction. The single-rotation pneumatic tool as claimed in item 5, wherein the air intake part includes two guide grooves, and the two guide grooves are correspondingly arranged at the opposite ends of the cylinder block along the axial direction, one of the guide grooves The launder is communicated with the intake flow channel. The single-rotation pneumatic tool as claimed in item 7, wherein an air guide channel extending along the axial direction is communicated between the two guide grooves. The single-rotation pneumatic tool as claimed in claim 1, wherein the first exhaust holes are circular holes and are arranged along the axial direction of the cylinder block, and the second exhaust holes are arc-shaped holes extending in the circumferential direction and Arranged along the axial direction of the cylinder block. The single-rotation pneumatic tool as claimed in any one of claims 1 to 9, wherein the air intake channel is provided with a valve chamber, the valve chamber is fixed with a valve member, and the valve chamber communicates with the air intake portion. The single-turn pneumatic tool as claimed in any one of claims 1 to 9, wherein the body further includes a driving head, and the driving head is combined with the rotor. The single-rotation pneumatic tool as described in Claim 4, wherein the air intake part includes at least one flow guide groove, each of which is recessed on one end surface of the cylinder block along the axial direction; each of the flow guide grooves along the circumferential direction One end tapers; the air intake part includes two guide grooves, the two guide grooves are correspondingly arranged at the opposite ends of the cylinder block along the axial direction, one of the guide grooves communicates with the intake air passage ; The two guide grooves are communicated with an air guide channel extending along the axial direction; the first exhaust holes are round holes and arranged along the axial direction of the cylinder block, and the second exhaust holes are The arc-shaped holes extending in the circumferential direction are arranged along the axial direction of the cylinder block; the intake air channel is provided with a valve chamber, and the valve chamber is fixed with a valve member, and the valve chamber is connected to the air intake part; the body is also It includes a driving head, which is combined with the rotor; the exhaust part also includes a plurality of third exhaust holes, and the third exhaust holes are arranged at the first end and arranged along the axial direction of the cylinder block , the third exhaust holes are located on the other side of the midline relative to the air intake portion.

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