CN219666441U

CN219666441U - Wind wrench

Info

Publication number: CN219666441U
Application number: CN202320768858.7U
Authority: CN
Inventors: 李仙友
Original assignee: Taizhou Beswell Machinery Co ltd
Current assignee: Taizhou Beswell Machinery Co ltd
Priority date: 2023-04-10
Filing date: 2023-04-10
Publication date: 2023-09-12
Anticipated expiration: 2033-04-10

Abstract

The utility model discloses an air wrench which comprises a gun body and a gun body cover connected with the left end of the gun body, wherein a hammering assembly is arranged in the gun body cover, a pneumatic motor and a rotary controller are sequentially arranged in the gun body from left to right, and the right end of the pneumatic motor is connected with the rotary controller. The aluminum alloy sealing cover at the rear end of the gun body is reduced and thinned and is used as an insert to be injection molded with the gun body, an air channel structure with switchable air inlet can be formed through the cooperation of the rotary controller, the gun body and the pneumatic motor, and an air inlet channel plug is arranged at the installation position of the starting switch; the rear end face of the rotary controller is connected with the direction button, the rotary controller is driven to rotate through the direction button, air inlet reversing and air inlet flow adjustment can be achieved, compared with an existing structure, the number of parts and places needing sealing are reduced, the tightness of the pneumatic trigger can be better kept in the use process, meanwhile, the structure is simpler, and reversing and gear shifting operations of the wind wrench are simpler and more convenient.

Description

Wind wrench

Technical Field

The utility model relates to the technical field of wrenches, in particular to an air wrench.

Background

The wind spanner is used in various industries and is mainly used for screwing and unscrewing tools for bolt, nut and other operations, and the wind spanner is used for driving the hammering assembly to complete the installation or the disassembly of the bolt, the nut and the like by driving the rotation of the inner rotor and the blades of the cylinder by compressed air entering the cylinder.

Because the structure of the wind wrench is different, the internal gas circuit structure can also be different, and current wind wrench is the plastic molding's rifle body mostly, sets up gas circuit part in the rifle body is inside, and the cooperation of back tip design an aluminum alloy closing cap and a rotary controller is in order to reach the function of shifting gears, switching-over. The independent aluminum alloy closing cap has large volume and the surface needs to be coated, so that the requirement on the appearance is high. When in installation, the whole machine is divided into three sections, so that not only is the part increased, but also the assembly difficulty is increased. The direction button is connected and fixed in the gun body by using a self-tapping screw to penetrate through the rotary controller, the whole machine is required to be disassembled during maintenance, and the maintenance is particularly inconvenient.

There is currently no effective solution to the above problems.

Disclosure of Invention

In view of the above problems in the related art, the present utility model provides an air wrench, which can overcome the above drawbacks of the prior art.

In order to achieve the technical purpose, the technical scheme of the utility model is realized as follows:

the utility model provides an air wrench, includes the rifle body and with the rifle body lid that the left end of rifle body is connected, be equipped with the hammering subassembly in the rifle body lid, the rifle is internal from left to right to be equipped with pneumatic motor and the rotary control ware in proper order, pneumatic motor's right-hand member with the rotary control ware is connected, pneumatic motor with be equipped with exhaust chamber PQ between the rifle body, the right-hand member inside of rifle body be equipped with as mold insert with the integrative injection moulding's of rifle body closing cap, the rotary control ware with be equipped with air inlet chamber J1 between the closing cap, the right-hand member outside of rifle body is equipped with the direction button, the direction button pass through the bolt with insert nut fixed connection on the rotary control ware;

the pneumatic motor comprises a cylinder body, a rear cover is arranged at the right end of the cylinder body, and a right-handed air inlet JK2 and a left-handed air inlet JK3 which are connected with the inside of the cylinder body are arranged on the rear cover; the cylinder body is also provided with a plurality of exhaust holes PK communicated with the exhaust cavity PQ.

Further, air inlet grooves JK4 are formed in two ends of the cylinder body.

Further, an exhaust channel PD is arranged at the front end of the grip of the gun body, and an air inlet channel JD is arranged at the rear end of the grip of the gun body.

Further, a positioning pin hole is formed in the direction button, a rotation angle prompting device is arranged in the positioning pin hole, and the rotation angle prompting device comprises a steel ball and a reset spring.

Further, a control valve is arranged in the air inlet channel JD through an air inlet component, and a starting switch contacted with the control valve is arranged on a handle of the gun body. The start switch is pressed to enable the control valve rod to rotate a certain angle, so that compressed air enters the air inlet channel through the control valve.

Further, an air inlet channel plug is arranged at the installation position of the starting switch, and an air inlet channel core-pulling sliding block is arranged at the air inlet channel plug of the gun body die. Without this slider, the cavity of the inlet channel cannot be formed. After the injection molding of the gun body is completed, one end of the cavity is blocked by a plug. So that the air flow can follow a designed path instead of being discharged there.

Further, the bolt penetrates through the sealing cover and is connected with the gun body cover beyond the pneumatic motor, and the gun body cover, the gun body and the pneumatic motor are assembled into a whole.

Further, a rotor is arranged in the cylinder body, and blades are placed in the rotor groove. The left end of the cylinder body is sleeved with a front cover, and the right end of the cylinder body is provided with a rear cover.

The utility model has the beneficial effects that: the aluminum alloy sealing cover at the rear end of the gun body is reduced and thinned and is used as an insert to be injection molded together with the gun body, and an air channel structure with changeable air inlet and reversing can be formed through the cooperation of the rotary controller, the gun body and the pneumatic motor; an air inlet channel plug is arranged at the mounting position of the starting switch, a core-pulling sliding block is arranged on a gun body die by the air inlet channel plug, and a hole of the air inlet channel of the gun body at the position is sealed by bolts and sealant; the steering button is connected to the rear end face of the rotary controller, the rotary controller is driven to rotate through the steering button to realize reversing and gear shifting adjustment, compared with an existing structure, the number of parts and the places needing sealing are reduced, the pneumatic trigger can better maintain sealing performance in the use process, meanwhile, the structure is simpler, and reversing and gear shifting operations are simple and convenient. The installation, the maintenance and the maintenance are more convenient.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawing structures may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of an air wrench according to an embodiment of the present utility model;

FIG. 2 is a schematic view of an internal structure of an air wrench according to an embodiment of the present utility model;

FIG. 3 is a schematic view of an internal partial structure of an air wrench according to an embodiment of the utility model;

FIG. 4 is a schematic view of a direction button installation of an air wrench according to an embodiment of the present utility model;

FIG. 5 is a schematic view of a rear cover of an air wrench according to an embodiment of the utility model;

FIG. 6 is a schematic view of a rotary controller of an air wrench according to an embodiment of the utility model;

in the figure: 1. a gun body cover; 2. a gun body; 3. a closing cap; 4. a hammering assembly; 5. a pneumatic motor; 6. a rotary controller; 7. a direction button; 8. an air intake assembly; 9. a control valve; 10. starting a switch; 11. an exhaust chamber PQ; 12. an air inlet cavity J1; 13. an air intake through hole JK1; 14. right-handed air inlet hole JK2; 15. left-handed air inlet hole JK3; 16. an air intake groove JK4; 17. an air intake through hole JK5; 18. an intake passage JD; 19. an exhaust passage PD; 20. an air intake chamber JD1; 21. air intake chamber JD2; 22. exhaust vent PK; 23. positioning a rotating hole; 24. an air intake zone; 25. a positioning area; 26. an installation area; 27. positioning the boss; 28. JL line direction; 201. an air inlet channel plug; 501. a front cover; 502. a rotor; 503. a blade; 504. a cylinder block; 505. a rear cover; 601. a nut; 301. a fixing hole; 302. an inner hexagon bolt; 303. an O-shaped sealing ring; 701. positioning pin holes; 702. a steel ball; 703. a return spring; 704. a right-hand gear groove 7A; 705. left-hand gear groove 7B.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which are derived by a person skilled in the art based on the embodiments of the utility model, fall within the scope of protection of the utility model.

As shown in fig. 1-6, the wind wrench according to the embodiment of the utility model comprises a gun body cover 1, a gun body 2, a closing cover 3, a hammering component 4, a pneumatic motor 5, a rotary controller 6, a direction button 7 and an air inlet component 8, wherein the gun body cover 1 and the gun body 2 are fixedly connected through long bolts at the outside, a sealing gasket is additionally arranged at the joint of the gun body cover 1 and the gun body 2, the hammering component 4 is designed in the gun body cover 1, the hammering component 4 is connected with the pneumatic motor 5 through a spline, the pneumatic motor 5 and the rotary controller 6 are designed in the gun body 2, and the direction button 7 and the rotary controller 6 are fixedly connected with a nut 601 and an inner hexagon bolt which are formed in the rotary controller 6 through injection molding; the pneumatic motor 5 comprises a front cover 501, a rotor 502, blades 503, a cylinder body 504 and a rear cover 505, a vent cavity PQ 11 is formed between the cylinder body 504 and the gun body 2 of the pneumatic motor 5, an air inlet cavity J1 12 is formed between a rotary controller 6 and the closed cover 3, and an air inlet through hole JK1 13 communicated with the air inlet cavity J1 12 is designed on the rotary controller 6; the rear cover 505 is respectively provided with a right-handed air inlet JK2 and a left-handed air inlet JK3 which can be connected with the inside of the cylinder block 504 and communicated with the air inlet JK1, two end surfaces of the cylinder block 504 are provided with air inlet JK4 16, an air inlet JK5 17 is designed between the air inlet JK4 16 at two sides, the air inlet JK4 and the air inlet JK1 can be communicated with the right-handed air inlet JK2 or the left-handed air inlet JK3, and the cylinder block 504 is provided with a plurality of exhaust holes PK 22 which are connected with an exhaust cavity PQ 11. An air inlet channel JD 18 and an air outlet channel PD 19 are respectively arranged on a handle part of the gun body 2, the air inlet channel JD 18 is connected with an air inlet cavity JD1 and an air inlet cavity JD2, the air outlet channel PD 19 is connected with an air outlet cavity PQ 11, a control valve 9 is fixedly arranged in the air inlet channel JD 18 through an air inlet component 8, the control valve 9 controls the on-off of the air inlet channel JQ, and a starting switch 10 for operating the control valve 9 is designed on the handle. An air inlet plug 201 is arranged at the installation position of the starting switch 10. The core-pulling slide block is arranged on the mould of the gun body 2. After the gun body 2 is formed, threads are tapped at the hole, and then a tightening bolt is used for assisting with sealant to seal the hole, so that an air inlet channel in the gun body 2 is completely formed.

Specifically, the tail of the closing cover 3 is provided with positioning rotating holes 7A and 7B, the rotary controller 6 comprises an air inlet area 24, a positioning area 25 and a mounting area 26, a positioning boss 27 which is abutted against the inner wall of the closing cover 3 is formed between the positioning area 25 and the mounting area 26, and the mounting area 26 is matched in the positioning rotating hole 23; the air intake through hole JK1 13 is provided on the air intake area 24 of the rotary controller 6.

Specifically, a positioning pin hole 701 is designed on the steering button 7, a rotation angle prompting device is installed in the positioning pin hole 701, the rotation angle prompting device comprises a steel ball 702 and a return spring 703, and a right-hand gear groove 7a 704 and a left-hand gear groove 7b 705 which can correspond to the steel ball 702 are arranged in the positioning rotating hole 23; during the rotation of the steering button 7, a positioning prompt is formed when the steel ball 702 falls into the gear slot each time, so that the size adjustment position of each time is clear.

Specifically, the rotary controller 6 is provided with a fixing hole 301, and the direction button 7 and the rotary controller 6 are fixedly connected through the fixing hole 301 on the rotary controller 6 by an inner hexagon bolt 302.

Specifically, an air inlet area 24 and an installation area 26 of the rotary controller 6 are respectively provided with an O-shaped sealing ring 303 which is sealed with the inner wall of the sealing cover 3; so as to ensure the tightness of the connection and avoid the occurrence of air leakage.

The two end surfaces of the cylinder block 504 are respectively provided with an air inlet groove JK4 which is symmetrically distributed along the central surface of the length of the cylinder block, and also symmetrically distributed along the two sides by taking the locating pin holes and the air exhaust holes as the central surfaces. And a through air hole is designed between the two air inlet grooves JK4 at two ends. The air inlet groove and the through air holes can be communicated with the right-handed air inlet JK2 14 or the left-handed air inlet JK 3.

The tail part of the gun body 2 is provided with a gear rotating hole, and the rotary controller 6 comprises an air inlet hole, a positioning boss 27 and a mounting nut. The main body of the rotary controller 6 is in a convex shape, an O-shaped sealing ring 303 is respectively designed and installed on the two step surfaces, and is matched with the sealing cover 3 to isolate the air inlet channel JD 18, the air outlet channel PD 19 and the outside, and the rotary controller 6 plays roles in adjusting the air flow and changing the direction, namely gear shifting and reversing.

In order to facilitate understanding of the above technical solutions of the present utility model, the following describes the above technical solutions of the present utility model in detail by a specific usage manner.

In specific use, according to the wind wrench of the present utility model, the steering wheel 6 is driven to rotate by the steering wheel 7, so that the air inlet chamber J1 is communicated with the right-handed air inlet hole JK2 14 or the left-handed air inlet hole JK 3. Two different overlapping areas (first gear or second gear) are arranged between the air inlet cavity J1 and the right-handed air inlet hole JK2, and the size of the overlapping areas determines the size of the air inlet amount and the size of the rotor rotation speed and the size of the output power. Only one baffle is arranged between the air inlet cavity J1 12 and the left-handed air inlet hole JK3; the starting switch 10 is pressed, the control valve 9 is in an open state, so that the air inlet channel JD 18 is in an open state, and an air source accessed by the air inlet component 8 sequentially passes through the air inlet channel JD18→the air inlet cavity JD1 20→the air inlet cavity JD2 21, the left-handed air inlet hole JK3 15 and the air inlet through hole JK1; if the right-handed state of the air motor 5 is selected at this time, the air inlet through hole JK1 13 is communicated with the right-handed air inlet hole JK2, and the air source enters the corresponding air inlet groove JK4 from the right-handed air inlet hole JK2 14 and enters the air inlet groove JK4 at the other side of the air cylinder 504 through the communicated air inlet cavity J1 12, so that the air enters the air cylinder 504 to drive the air motor 5 to work; if the air motor 5 selects a left-handed state at this time, the air inlet through hole JK1 13 is communicated with the left-handed air inlet hole JK3, and the air source enters the corresponding air inlet groove JK4 from the left-handed air inlet hole JK3 15 and enters the air inlet groove JK4 at the other side of the air cylinder body 504 through the air inlet cavity J1 12, so that the air enters the air cylinder body 504 to drive the air motor 5 to work; the intake trend is the JL line direction 28 indicated in the figure.

The air motor 5 is operated in either a right-handed or left-handed operation, and the internal air is introduced into the exhaust chamber PQ through the exhaust hole PK in the cylinder 504 and then into the exhaust passage PD of the gun body 2.

In summary, by means of the technical scheme, the aluminum alloy sealing cover at the rear end of the gun body is reduced and thinned and is used as an insert to be injection molded together with the gun body, and an air channel structure with switchable air inlet and gear shifting can be formed through the cooperation of the rotary controller, the gun body and the pneumatic motor; an air inlet duct plug is arranged at the mounting position of the starting switch, a core-pulling sliding block is arranged on a mold of the gun body 2 by the air inlet duct plug, and a hole of the air inlet duct of the gun body 2 at the position is sealed by bolts and sealant; the rear end face of the rotary controller is connected with the direction button 7, the rotary controller is driven to rotate through the direction button, the air inlet reversing and gear shifting adjustment can be achieved, compared with an existing structure, the number of parts and the places needing to be sealed are reduced, the tightness of the pneumatic trigger can be better kept in the use process, meanwhile, the structure is simpler, and the air inlet reversing and gear shifting operation is simple and convenient. The installation, the maintenance and the maintenance are more convenient.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims

1. The utility model provides an air wrench which is characterized in that, including rifle body (2) and with rifle body lid (1) that the left end of rifle body (2) is connected, be equipped with in rifle body lid (1) and beat subassembly (4), be equipped with air motor (5) and gyrator (6) in proper order in rifle body (2) from left to right, the right-hand member of air motor (5) with gyrator (6) are connected, be equipped with exhaust chamber PQ (11) between air motor (5) and rifle body (2), the right-hand member inside of rifle body (2) be equipped with rifle body (2) integrated into one piece's closing cap (3), gyrator (6) with be equipped with air inlet chamber J1 (12) between closing cap (3), the right-hand member outside of rifle body (2) is equipped with direction button (7), direction button (7) pass through the bolt with nut (601) on gyrator (6) are fixed connection;

the pneumatic motor (5) comprises a cylinder block (504), a rear cover (505) is arranged at the right end of the cylinder block (504), and a right-handed air inlet JK2 (14) and a left-handed air inlet JK3 (15) which are connected with the inside of the cylinder block (504) are arranged on the rear cover (505); the cylinder body (504) is also provided with a plurality of exhaust holes PK (22) communicated with the exhaust cavity PQ (11).

2. The wind wrench as claimed in claim 1, wherein both ends of the cylinder block (504) are provided with air intake grooves JK4 (16).

3. The wind wrench as claimed in claim 1, wherein the front end of the grip of the gun body (2) is provided with an exhaust passage PD (19), and the rear end of the grip of the gun body (2) is provided with an air inlet passage JD (18).

4. The wind wrench as claimed in claim 1, wherein the direction button (7) is provided with a positioning pin hole (701), a rotation angle prompting device is arranged in the positioning pin hole, and the rotation angle prompting device comprises a steel ball (702) and a reset spring (703).

5. A wind wrench as claimed in claim 3, wherein a control valve (9) is provided in the air inlet duct JD (18) through an air inlet assembly (8), and a start switch (10) connected with the control valve (9) is provided on the handle of the gun body.

6. The wind wrench as claimed in claim 5, wherein an air inlet plug (201) is arranged at the installation position of the starting switch (10), and an air inlet core pulling slide block is arranged at the air inlet plug of the injection mold of the gun body (2).

7. Wind wrench according to claim 1, characterised in that the bolt extends through the closing cap (3).

8. The wind wrench as claimed in claim 1, wherein a rotor (502) is provided in the cylinder block (504), and a front cover (501) is provided on a left end of the cylinder block (504).