CN213225965U - Pneumatic bottle opener with high torsion - Google Patents

Abstract

The utility model relates to a pneumatic screw driver with high torsion, which comprises a body, wherein the body is sequentially provided with an air inlet component, an air inlet switch component, a forward and reverse rotation control component, a pneumatic motor transmission component and an impact mechanism from back to front, the pneumatic motor transmission component comprises a back cover, a cylinder, a rotor, blades, a front cover and a heat dissipation nut, the front cover and the back cover are respectively connected with the front end and the back end of the cylinder, the rotor is distributed with a plurality of blades with different embedding depths, the rotor is eccentrically arranged in the cylinder in a penetrating way, the heat dissipation nut is connected with the front end of the front cover, the front end of the rotor passes through the front cover and the heat dissipation nut to be in transmission connection with the impact mechanism, the back cover is provided with a first vent hole and a second vent hole, the two ends of the cylinder are respectively provided with a first air guide groove and a second air guide groove, the first air guide groove corresponds to the first vent hole, the second, the side wall of the rotor is abutted against the inner wall of the body between the first air guide groove and the second air guide groove, so that air flow flows in a single direction.

Description

Pneumatic bottle opener with high torsion

Technical Field

The utility model relates to a bottle opener technical field indicates a pneumatic bottle opener with high torsion especially.

Background

The pneumatic screwdriver is also called a pneumatic screwdriver, a pneumatic screwdriver and the like, is a pneumatic tool for screwing and unscrewing screws, nuts and the like, and is mainly used for various assembling operations.

The existing pneumatic screwdriver has the defects that due to the fact that gas flows in a non-directional mode, torsion is insufficient, the situation that screws cannot be screwed up often occurs, and operation efficiency is affected.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problem, the utility model provides a pneumatic bottle opener with high torsion that operating efficiency is high.

In order to achieve the above object, the utility model adopts the following technical scheme: the utility model provides a pneumatic bottle opener with high torsion, includes the body, the body is equipped with air inlet assembly, air inlet switch module, positive reverse control assembly, pneumatic motor drive assembly and impact mechanism, its characterized in that from back to preceding in proper order: the pneumatic motor transmission assembly comprises a rear cover, a cylinder, a rotor, blades, a front cover and a heat dissipation nut, wherein the front cover and the rear cover are respectively connected to the front end and the rear end of the cylinder;

the rear cover is provided with a first vent hole and a second vent hole, a first air guide groove and a second air guide groove are respectively arranged at two ends of the air cylinder, the first air guide groove corresponds to the first vent hole, the second air guide groove corresponds to the second vent hole, and the side wall of the rotor is abutted against the inner wall of the body between the first air guide groove and the second air guide groove to enable airflow to flow in a single direction;

the inner side surface of the heat dissipation nut is distributed with a plurality of guide grooves which are communicated with a hexagonal opening arranged in the middle of the heat dissipation nut.

Preferably, the body is sequentially provided with a threaded hole, a first cavity, a second cavity and a mounting cavity which are communicated with each other from back to front, the second cavity is communicated with the mounting cavity through a forward ventilation channel and a reverse ventilation channel, the air inlet assembly is connected in the threaded hole, the air inlet switch assembly is arranged in the first cavity in a penetrating mode, the forward and reverse rotation control assembly is arranged in the second cavity in a penetrating mode, the pneumatic motor transmission assembly is arranged in the mounting cavity in a penetrating mode, a plurality of hook grooves are formed in the mounting cavity, the front end of the body is further provided with a clamping groove, and a plurality of exhaust holes communicated with the hook grooves are formed in the clamping groove.

Preferably, the air inlet assembly comprises an air inlet head, an air inlet nozzle and an air inlet filter screen, the air inlet filter screen is arranged at the rear end of the body in a supporting mode, the air inlet head penetrates through the air inlet filter screen and is connected with the rear end of the body, the air inlet nozzle is arranged on the air inlet head, and the air inlet head and the air inlet nozzle are respectively provided with corresponding air inlet channels.

Preferably, the switch module of admitting air includes trigger, first wind stopper, valve rod and air switch valve, first wind stopper is connected in the bottom in first chamber, the trigger passes through the rotatable outer wall of establishing at the body of spring catch, the air switch valve is established at first intracavity, the valve rod is worn to establish in the air switch valve, and its top and trigger joint, its bottom is passed through spring coupling on first wind stopper.

Preferably, the forward and reverse rotation control assembly comprises a forward and reverse rotation switch, a second air plug, a forward and reverse rotation shaft and a forward and reverse rotation shaft sleeve, the positive and negative rotation switch is movably arranged on the trigger, the second air plug is arranged at the bottom of the second cavity in a penetrating way, the side wall of the forward and reverse rotating shaft sleeve is provided with an air inlet, a forward rotating air vent and a reverse rotating air vent, the air inlet corresponds to an air inlet hole communicated with the first cavity and the second cavity, the forward rotation air vent corresponds to the forward rotation air vent flow passage, the reverse rotation air vent corresponds to the reverse rotation air vent flow passage, the forward and reverse rotating shaft is arranged in the forward and reverse rotating shaft sleeve in a penetrating way and is elastically abutted against the second air plug through an elastic piece, the top end of the forward and reverse rotating shaft is connected with a round pin, the round pin is abutted to the bottom surface of the forward and reverse rotation switch, and the forward and reverse rotation switch drives the forward and reverse rotation shaft to lift and move through the round pin to isolate the forward rotation air vent and the reverse rotation air vent, so that air flow can only flow out of the forward rotation air vent channel or the reverse rotation air vent channel.

Preferably, the impact mechanism includes cam, impact block bearing, impact rod, the lantern ring, axle sleeve and shell, the front end at the body is connected to the shell, impact block bearing establishes in the shell, and two impact blocks are fixed to be established on impact block bearing through the bolt respectively, the cam is established at impact block bearing's rear end and is connected with pneumatic motor drive assembly, cam and impact block joint, impact rod wears to establish in impact block bearing and is connected with pneumatic motor drive assembly, the lantern ring with wear to establish on impact rod, the axle sleeve passes through gasket and lantern ring butt, impact rod's front end is worn out the shell, is connected with detachable screw batch head.

The beneficial effects of the utility model reside in that: the utility model optimizes and improves the structure of the pneumatic motor transmission assembly, the rotor is eccentrically arranged in the cylinder to isolate the first air guide groove and the second air guide groove, so that the air flow can only flow clockwise in one direction after flowing into the first air guide groove, thereby driving the rotor to rotate clockwise; after flowing into the second air guide groove, the airflow can only flow anticlockwise in one direction so as to drive the rotor to rotate anticlockwise, so that the airflow is effectively prevented from disorienting, the stability of the rotation of the rotor is prevented from being influenced, the torsion is improved, and the working efficiency is accelerated;

the structural design novelty of heat dissipation nut utilizes the guiding groove guide air current to concentrate from the hexagon opening at middle part and flows out impact mechanism, takes away the heat that impact mechanism operation produced, then via heat dissipation nut backward flow, at last from the exhaust hole discharge external world, plays fine radiating effect, and concentrates the guide to the air current, prevents that the air current from scurrying in disorder.

Drawings

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

Fig. 2 is an explosion structure diagram of the present invention.

Fig. 3 is a schematic plan view of the present invention.

Fig. 4 is a sectional view a-a of the normal rotation state of fig. 3.

Fig. 5 is a B-B sectional view of the normal rotation state of fig. 3.

Fig. 6 is a cross-sectional view a-a of the inverted state of fig. 3.

Fig. 7 is a B-B sectional view of the inverted state of fig. 3.

Fig. 8 is a perspective view of the driver body.

Fig. 9 is a front sectional view of the driver body.

Fig. 10 is a side sectional view of the driver body.

Fig. 11 is a perspective view of the reversible sleeve.

Fig. 12 is a sectional view of the forward and reverse spindle cover.

Fig. 13 is a perspective view of the forward/reverse shaft.

Fig. 14 is a front sectional view of the forward/reverse rotation switch.

Fig. 15 is a perspective view of the pneumatic motor drive assembly.

Fig. 16 is a perspective view of the cylinder.

Fig. 17 is a perspective view of the cylinder.

Fig. 18 is a perspective view of the heat dissipating nut.

Fig. 19 is a view showing a connection structure of the rotor and the cylinder.

Fig. 20 is a perspective view of the exhaust spring ring.

Description of reference numerals:

1. a body; 11. an air control part; 111. a positive rotation ventilation flow channel; 112. a reverse ventilation flow channel; 113. a first chamber; 114. a second chamber; 1141. an air inlet; 1142. a positive rotation vent hole; 1143. reversing the vent; 1144. an axial bore; 1145. an air outlet; 1146. a residual gas flow passage; 12. a transmission section; 121. a mounting cavity; 1211. hooking a groove; 13. a threaded hole; 131. a through hole; 14. a card slot; 141. an exhaust hole;

2. an air intake assembly; 21. an air inlet head; 22. an air inlet filter screen;

3. an air intake switch assembly; 31. a first air plug; 32. a valve stem; 33. an air switch valve; 34. a trigger;

4. a forward and reverse rotation control assembly; 41. a second air plug; 42. a forward and reverse rotation shaft; 421. a first retainer ring; 422. a second retainer ring; 423. a third retainer ring; 43. the forward and reverse rotating shaft sleeves; 431. an air inlet; 432. forward rotation air vent; 433. reversing the vent; 434. an air outlet; 44. a forward and reverse rotation switch; 441. a first positioning hole; 442. a second positioning hole; 45. a round pin;

5. a pneumatic motor drive assembly; 51. a rear cover; 511. a first vent hole; 512. a second vent hole; 52. a cylinder; 521. mounting holes; 522. a first gas guiding groove; 523. a second gas guiding groove; 524. an air outlet; 53. a rotor; 54. a blade; 55. a front cover; 56. a heat dissipation nut; 561. a guide groove; 562. a hexagonal opening;

6. an impact mechanism; 61. a cam; 62. an impact block; 63. an impact block bearing; 64. an impact bar; 65. a collar; 66. a shaft sleeve; 67. a housing;

7. a hook;

8. and an exhaust spring ring.

Detailed Description

Referring to fig. 1-20, the present invention relates to a pneumatic screwdriver with high torque force, including a main body 1, the surface of the main body 1 is provided with grooves for gripping and anti-skid, the main body 1 includes an air control part 11 and a transmission part 12, an open-ended installation cavity 121 is provided in the transmission part 12, the inner wall of the installation cavity 121 is provided with two hook grooves 1211, the air control part 11 is provided therein with a forward ventilation channel 111, a reverse ventilation channel 112 and two residual air channels 1146, the forward ventilation channel 111 and the reverse ventilation channel 112 are respectively communicated with the transmission part 12, the residual air channels 1146 are communicated with the installation cavity 121, the air control part 11 is further provided with a first cavity 113 and a second cavity 114 in longitudinal direction, the first cavity 113 is communicated with a threaded hole 13 at the rear end of the main body 1 through an oblique through hole 131, the second cavity 114 is provided with an axial hole 1144, an air inlet 1141, an air inlet hole 1141, The forward rotation vent 1142, the reverse rotation vent 1143 and the air outlet 1145, the second cavity 114 is communicated with the mounting cavity 121 through an axial hole 1144, is communicated with the first cavity 113 through an air inlet 1141, is communicated with the forward rotation vent channel 111 through the forward rotation vent 1142, is communicated with the reverse rotation vent channel 112 through the reverse rotation vent 1143, and is communicated with the residual air channel 1146 through the air outlet 1145, the body 1 is connected with the air inlet component 2 through a threaded hole 13 at the rear end, the air inlet switch component 3 is arranged in the first cavity 113, the forward and reverse rotation control component 4 is arranged in the second cavity 114, the pneumatic motor transmission component 5 is arranged in the mounting cavity 121, the front end of the transmission part 12 is connected with the impact mechanism 6, the impact mechanism 6 is in transmission connection with the pneumatic motor transmission component 5, and the pneumatic motor transmission component 5 drives the impact mechanism 6.

The outer wall of transmission portion 12 is equipped with draw-in groove 14, it has a plurality of exhaust hole 141 to distribute in the draw-in groove 14, exhaust hole 141 intercommunication colludes groove 1211, and a rotatable cover of exhaust spring ring 8 is established in draw-in groove 14, and it is equipped with the opening, and when someone stood near exhaust hole 141 exhausting, through rotatory exhaust spring ring 8, made the opening turn to other exhaust holes 141, the adjustment direction of exhausting avoids causing danger to other people.

Preferably, the pneumatic motor transmission assembly 5 includes a rear cover 51, a cylinder 52, a rotor 53, blades 54, a front cover 55 and a heat dissipation nut 56, the rear cover 51, the cylinder 52 and the front cover 55 are sequentially connected and disposed in the mounting cavity 121 through spring pins, the rear cover 51 is provided with a first vent hole 511 and a second vent hole 512, the side wall of the cylinder 52 is provided with a vent hole 524, the cylinder 52 is axially provided with a mounting hole 521, both ends of the cylinder 52 are provided with a first air guide groove 522 and a second air guide groove 523, the first air guide groove 522, the first vent hole 511 and the forward rotation vent channel 111 correspond to each other, the second air guide groove 523 and the second vent hole 512 correspond to the reverse rotation vent channel 112, the rotor 53 is rotatably disposed in the mounting hole 521, the plurality of blades 54 are embedded in the rotor 53, wherein the installation depths of some blades 54 are different, so that the eccentric center of the rotor 53 abuts against the inner wall 521 of the mounting hole between the first air guide groove 522 and the second air guide groove 523, the isolation function is achieved, for example, when the air flow flows from the forward rotation ventilation channel 111 to the first air guide groove 522, the air flow can only flow clockwise in one direction due to the matching and abutting of the rotor 53 and the inner wall of the mounting hole 521, the rotor 53 is driven to rotate clockwise, when the air flow flows from the reverse rotation ventilation channel 112 to the second air guide groove 523, the air flow can only flow counterclockwise in one direction due to the matching and abutting of the rotor 53 and the inner wall of the mounting hole 521, the rotor 53 is driven to rotate counterclockwise, the front side of the mounting cavity 121 is provided with internal threads, the heat dissipation nut 56 is rotatably arranged at the position of the hook groove 1211 in the mounting cavity 121, the inner side surface of the heat dissipation nut 56 is distributed with a plurality of guide grooves 561, the guide grooves 561 correspond to the hook grooves, the plurality of guide grooves 561 are all communicated with the hexagonal openings 562 arranged in the middle of the heat dissipation nut 56, when the, the guiding slot 561 guides the air flow, so that the air flows out from the hexagonal opening 562 to the impact mechanism 6 in a concentrated manner, takes away heat generated by the operation of the impact mechanism 6, and then flows back through the heat dissipation nut 56 to be exhausted from the outside through the exhaust hole 141, a small amount of air flows back into the residual air flow channel 1146, and the small amount of air is finally exhausted from the exhaust hole 141 after being swirled.

Preferably, the air intake assembly 2 includes an air intake head 21, an air intake nozzle and an air intake filter 22, the air intake filter 22 supports the rear end of the body 1, the air intake head 21 passes through the threaded hole 13 at the rear end of the air intake filter 22 and the body 1 to be connected, the air intake nozzle is arranged on the air intake head 21, and the air intake head 21 and the air intake nozzle are respectively provided with corresponding air inlet channels.

Preferably, the rear end of the body 1 is further connected with a lifting hook 7, so that the lifting hook is convenient to hang.

Preferably, air inlet switch subassembly 3 includes first windcock 31, valve rod 32, air switch valve 33 and trigger 34, first windcock 31 is connected in the bottom in first chamber 113, trigger 34 passes through the rotatable upper portion of establishing at body 1 of spring catch, air switch valve 33 is established in first chamber 113, valve rod 32 wears to establish in air switch valve 33, and its top and trigger 34 joint, spring coupling are passed through on first windcock 31 in its bottom, and external force is on trigger 34, makes trigger 34 rotate downwards, then can drive valve rod 32 and move down, makes air switch valve 33 start work.

Preferably, the forward/reverse rotation control assembly 4 includes a second wind plug 41, a forward/reverse rotation shaft 42, a forward/reverse rotation shaft sleeve 6643 and a forward/reverse rotation switch 44, the forward/reverse rotation switch 44 is slidably disposed on the trigger 34, a first positioning hole 441 and a second positioning hole 442 are disposed on a bottom surface of the forward/reverse rotation switch 44, a depth of the first positioning hole 441 is greater than that of the second positioning hole 442, the first positioning hole 441 and the second positioning hole 442 are linearly distributed, the second wind plug 41 is disposed at a bottom of the second chamber 114, the forward/reverse rotation shaft sleeve 6643 is disposed in the second chamber 114, the forward/reverse rotation shaft sleeve 6643 is provided with a wind inlet 431, a forward rotation vent 432, a reverse rotation vent 433 and a wind outlet 434, the wind inlet 431 corresponds to the wind inlet 1141, the forward rotation vent 432 corresponds to the forward rotation vent 1142, the reverse rotation vent 433 corresponds to the reverse rotation vent 1143, and the wind outlet 434, the forward and reverse rotation shaft 42 moves up and down in a forward and reverse rotation shaft sleeve 6643, the forward and reverse rotation shaft 42 is provided with a first baffle ring 421, a second baffle ring 422 and a third baffle ring 423 at intervals, the first baffle ring 421, the second baffle ring 422 and the third baffle ring 423 divide the second chamber 114 into a plurality of independent spaces, the bottom end of the forward and reverse rotation shaft 42 is connected to the second air plug 41 through a spring, the forward and reverse rotation shaft 42 is connected with a round pin 45, the round pin 45 is abutted against the bottom surface of the forward and reverse rotation switch 44, when an external force pushes the forward and reverse rotation switch 44, the round pin 45 corresponds to the first positioning hole 441, the forward and reverse rotation shaft 42 moves upwards, the round pin 45 is clamped in the first positioning hole 441, the air inlet 431 and the forward rotation vent 432 are positioned in the independent space formed by the second baffle ring 422 and the third baffle ring 423, the reverse rotation vent 433 is isolated by the third baffle ring 423, air flows in from the air inlet 431, and then flows out from the forward rotation vent 432 and the forward rotation vent 114, flows to the mounting cavity 121 through the forward rotation air outlet channel to enable the pneumatic motor transmission assembly 5 to rotate clockwise; when the external force pushes the forward and reverse rotation switch 44, the round pin 45 moves out of the first positioning hole 441 and corresponds to the second positioning hole 442, the forward and reverse rotation shaft 42 moves downward, the spring is in a compressed state, the air inlet 431 and the reverse rotation air vent 433 are located in an independent space formed by the second retaining ring 422 and the third retaining ring 423, the forward rotation air vent 4323 is isolated outside by the second retaining ring 422, air can only flow out of the reverse rotation air vent 433 and the reverse rotation air vent 1143 to the reverse rotation air vent flow passage 112, and flows to the installation cavity 121 through the reverse rotation air vent flow passage 112, so that the pneumatic motor transmission assembly 5 rotates counterclockwise, and after the operation is finished, the air in the second cavity 114 is discharged to the residual air flow passage 1146 from the air outlet 434 and the air outlet 1145 and is discharged to the outside through the residual.

Preferably, the impact mechanism 6 includes a cam 61, an impact block 62, an impact block bearing 63, an impact rod 64, a collar 65, a shaft sleeve 66 and a housing 67, the housing 67 is connected to the front end of the body 1, the impact block bearing 63 is disposed in the housing 67, the two impact blocks 62 are respectively fixedly disposed on the impact block bearing 63 through bolts, the cam 61 is disposed at the rear end of the impact block bearing 63 and is connected to the front end rotating shaft of the rotor 53, the cam 61 is abutted to the heat dissipating nut 56 through a gasket of the cam 61, the cam 61 is clamped to the impact block 62, the impact rod 64 is inserted into the impact block bearing 63 and is connected to the front end rotating shaft of the rotor 53, the collar 65 is inserted into the impact rod 64, the shaft sleeve 66 is abutted to the collar 65 through a gasket, the front end of the impact rod 64 penetrates through the housing 67, a screw driver head can be installed, the rotor 53 rotates to drive the cam 61 and the impact rod 64 to rotate, the cam 61 drives the impact block 62 to rotate, and the impact block 62 drives the impact block bearing 63 to rotate.

The working principle is as follows: the trigger 34 is pressed, the air switch valve 33 is started by the valve rod 32, the air is sucked and conveyed into the second cavity 114 through the air inlet assembly 2, the forward and reverse rotation switch 44 is pushed at the moment, the round pin 45 is clamped in the first positioning hole 441, the forward and reverse rotation shaft 42 moves upwards to isolate the reverse rotation air vent 433 from the air inlet 431, the air flow can only flow out of the forward rotation air vent 432 and flow into the first air guide groove 522 through the forward rotation air vent flow channel 111, the air flow cannot flow downwards but can only flow upwards and clockwise due to the fact that the rotor 53 is abutted to the inner wall of the air cylinder 52, the rotor 53 is driven to rotate clockwise, and the impact rod 64 is driven to rotate clockwise by the rotor 53; when the forward/reverse switch 44 is pushed to clamp the round pin 45 in the second positioning hole 442, the forward/reverse shaft 42 moves downward to isolate the forward/reverse vent 432 from the air inlet 431, the air flow can only flow out of the reverse vent 433 and flows into the second air guide groove 523 through the reverse vent channel 112, because the rotor 53 abuts against the inner wall of the cylinder 52, the air flow cannot flow upwards but can only flow downwards anticlockwise, the rotor 53 is driven to rotate anticlockwise, and the rotor 53 drives the impact rod 64 to rotate anticlockwise.

The above embodiments are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made by the technical solution of the present invention by those skilled in the art are all within the scope of the present invention as defined by the claims.

Claims (6)

1. The utility model provides a pneumatic bottle opener with high torsion, includes the body, the body is equipped with air inlet assembly, air inlet switch module, positive reverse control assembly, pneumatic motor drive assembly and impact mechanism, its characterized in that from back to preceding in proper order: the pneumatic motor transmission assembly comprises a rear cover, a cylinder, a rotor, blades, a front cover and a heat dissipation nut, wherein the front cover and the rear cover are respectively connected to the front end and the rear end of the cylinder;

the rear cover is provided with a first vent hole and a second vent hole, a first air guide groove and a second air guide groove are respectively arranged at two ends of the air cylinder, the first air guide groove corresponds to the first vent hole, the second air guide groove corresponds to the second vent hole, and the side wall of the rotor is abutted against the inner wall of the body between the first air guide groove and the second air guide groove to enable airflow to flow in a single direction;

the inner side surface of the heat dissipation nut is distributed with a plurality of guide grooves which are communicated with a hexagonal opening arranged in the middle of the heat dissipation nut.

2. The pneumatic driver with high torque force of claim 1, wherein: the body is equipped with screw hole, first chamber, second chamber and the installation cavity of intercommunication from back to front in proper order, the second chamber is ventilated the runner and is linked together through corotation with the reversal through the installation cavity, the subassembly of admitting air is connected in the screw hole, the switch module that admits air wears to establish in the first intracavity, the control module that just reverses is worn to establish in the second intracavity, pneumatic motor drive assembly wears to establish in the installation cavity, be equipped with a plurality of catching groove in the installation cavity, the front end of body still is equipped with a draw-in groove, be equipped with the exhaust hole of a plurality of intercommunication catching groove in the draw-in groove.

3. The pneumatic driver with high torque force of claim 1, wherein: the air inlet assembly comprises an air inlet head, an air inlet nozzle and an air inlet filter screen, the air inlet filter screen is arranged at the rear end of the body in a supporting mode, the air inlet head penetrates through the air inlet filter screen and is connected with the rear end of the body, the air inlet nozzle is arranged on the air inlet head, and the air inlet head and the air inlet nozzle are respectively provided with corresponding air inlet channels.

4. The pneumatic driver with high torque force of claim 1, wherein: the switch module admits air includes trigger, first wind stopper, valve rod and air switch valve, first wind stopper is connected in the bottom in first chamber, the trigger passes through the rotatable outer wall of establishing at the body of spring catch, the air switch valve is established at first intracavity, the valve rod is worn to establish in the air switch valve, its top and trigger joint, and spring coupling is passed through on first wind stopper in its bottom.

5. The pneumatic driver with high torque force according to claim 1 or 4, characterized in that: the forward and reverse rotation control assembly comprises a forward and reverse rotation switch, a second air plug, a forward and reverse rotation shaft and a forward and reverse rotation shaft sleeve, the positive and negative rotation switch is movably arranged on the trigger, the second air plug is arranged at the bottom of the second cavity in a penetrating way, the side wall of the forward and reverse rotating shaft sleeve is provided with an air inlet, a forward rotating air vent and a reverse rotating air vent, the air inlet corresponds to an air inlet hole communicated with the first cavity and the second cavity, the forward rotation air vent corresponds to the forward rotation air vent flow passage, the reverse rotation air vent corresponds to the reverse rotation air vent flow passage, the forward and reverse rotating shaft is arranged in the forward and reverse rotating shaft sleeve in a penetrating way and is elastically abutted against the second air plug through an elastic piece, the top end of the forward and reverse rotating shaft is connected with a round pin, the round pin is abutted to the bottom surface of the forward and reverse rotation switch, and the forward and reverse rotation switch drives the forward and reverse rotation shaft to lift and move through the round pin to isolate the forward rotation air vent and the reverse rotation air vent, so that air flow can only flow out of the forward rotation air vent channel or the reverse rotation air vent channel.

6. The pneumatic driver with high torque force of claim 1, wherein: impact mechanism includes cam, impact block bearing, strikes pole, the lantern ring, axle sleeve and shell, the front end at the body is connected to the shell, impact block bearing is established in the shell, and two impact blocks are fixed to be established on impact block bearing through the bolt respectively, the cam is established at the rear end that strikes block bearing and is connected with pneumatic motor drive assembly, cam and impact block joint, the impact rod is worn to establish in impact block bearing and is connected with pneumatic motor drive assembly, the lantern ring with wear to establish on the impact rod, the axle sleeve passes through gasket and lantern ring butt, the shell is worn out to the front end of impact rod, is connected with detachable screw batch head.

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