WO2019119294A1

WO2019119294A1 - Pneumatic tool quick connecting structure

Info

Publication number: WO2019119294A1
Application number: PCT/CN2017/117439
Authority: WO
Inventors: 姜国城; 刘俊
Original assignee: 宁波飞驹工具有限公司
Priority date: 2017-12-20
Filing date: 2017-12-20
Publication date: 2019-06-27

Abstract

Disclosed is a pneumatic tool quick connecting structure, comprising a body group, a connecting structure and two or more transmission groups, wherein the body group and the connecting structure are connected into an integrated structure; each transmission group matches the connecting structure in an engaging manner; and the transmission group is a ratchet wrench part, a straight-shank grinder part or an angle grinder part. Matching between one body group and a plurality of transmission groups is realized by means of the connecting structure, thus surmounting the combination of a single tool and realizing one machine with multiple purposes, and thereby satisfying the requirements of a client for a plurality of tools and reducing the usage cost of the client.

Description

Pneumatic tool quick connection structure

Technical field

The invention belongs to the technical field of pneumatic tools, in particular to a quick connection structure of pneumatic tools.

Background technique

Pneumatic tools are compressed air-powered tools that are widely used in the fields of machinery, engineering or construction. The compressed air drives the rotation of the cylinders to drive the working part. According to the basic working mode, it can be divided into rotary and reciprocating.

In the prior art, there are many types of pneumatic tools, such as pneumatic wrenches, pneumatic screwdrivers, pneumatic grinding machines, pneumatic spray guns, pneumatic nail guns, and air shovel. However, in the prior art pneumatic tools, each pneumatic tool has only a single use, and it is impossible to realize a multifunctional structure of a plurality of pneumatic tools by a power mechanism of a pneumatic tool. When a plurality of pneumatic tools are required, it is necessary to The work is equipped with a single pneumatic tool, which increases the cost of use.

Summary of the invention

It is an object of the present invention to provide a pneumatic tool quick connect structure to solve the problem that prior art pneumatic tools cannot achieve multifunctional use.

The invention is achieved by the following technical solutions:

A pneumatic tool quick connection structure comprises a body group, a connection structure and two or more transmission groups;

The body group and the connecting structure are connected as a unitary structure; each of the transmission groups is respectively engaged with the connecting structure.

The transmission group is a ratchet wrench portion, a straight shank grinder portion or an angular grinder portion.

The body set includes a handle body and a cylinder; the cylinder is disposed in the handle body;

The cylinder includes a back cover, a rotor, a blade, a cylinder block and a front cover;

The blade is disposed on the rotor and disposed in the cylinder body, the rear cover is sleeved on the rear axle of the rotor, and the rear cover is fixedly connected with the rear end of the cylinder; the front cover is sleeved on The front cover of the rotor is fixedly connected to the front end of the cylinder;

The front end of the inner cavity of the handle body is provided with an internal thread; the front end of the front shaft is a polygonal prism structure.

The body set further includes a handle body sheath, the handle body sheath being sleeved outside the handle body.

The connecting structure comprises a fixing seat, a locking ring, a compression spring, a jacket, a shaft retaining ring and a transmission guide sleeve;

The fixing base is a cylindrical tube structure; a plurality of steel ball mounting holes are disposed on the fixing base, and the steel ball mounting holes communicate with the inner cavity of the fixing seat, and are disposed in each of the steel ball mounting holes a steel ball, the front end inner cavity of the fixing seat is polygonal;

a ring groove is disposed on a side surface of the fixing seat near the front end;

The fixing seat is disposed in the handle body and is engaged with the front cover;

The locking ring is threadedly connected to the front end of the handle body after being fastened to the fixing seat;

The pressure spring and the outer sleeve are sequentially sleeved on the fixing seat, and the outer sleeve is engaged with the fixing seat by the steel ball; the shaft retaining ring is engaged in the card slot;

The inner diameter of the transmission guide sleeve is polygonal; the rear end of the transmission guide sleeve is mated with the front end of the front shaft.

The ratchet wrench portion includes a first coupling shaft, a first connecting sleeve, a gear set, a first nut, an eccentric shaft, an eccentric shaft bearing and a ratchet head set;

The first connecting sleeve includes a first sleeve portion and a first connecting portion; the first sleeve portion is a cylindrical structure, the first connecting portion is a polygonal prism structure, and the front end of the first connecting portion Connecting with the rear end of the first sleeve portion as a unitary structure; providing, on the first connecting portion, a first coupling shaft through hole communicating with the first sleeve portion; outside the first connecting portion a surface of the first steel ball snap groove;

The front end of the inner cavity of the first sleeve portion is provided with an internal thread;

The rear end of the first coupling shaft is a polygonal prism structure, and the front end side surface of the first coupling shaft is provided with external ribs;

The gear set is disposed in the first sleeve portion and meshes with an outer tooth of the first coupling shaft;

The eccentric shaft bearing sleeve is sleeved on the eccentric shaft, the rear end of the eccentric shaft is mated with the gear set, and the front end of the eccentric shaft is connected with the ratchet head set;

The first nut is threadedly coupled to the ratchet head set and the gear set, respectively.

The gear set includes a gear ring, an idler set, an idler pin, and an idler seat;

The gear ring is a cylindrical structure, and an outer surface of the gear ring is provided with an external thread;

The inner surface of the gear ring is provided with an axial inner tooth, the idler gear meshes with the inner tooth; the outer tooth of the first coupling shaft meshes with the idler gear;

The idler seat has a cylindrical structure, and an eccentric shaft insertion hole and an idler pin insertion hole are disposed on the idler seat, and the idler set is coupled to the idler seat through the idler pin.

The straight shank grinder portion includes a second coupling shaft, a second coupling sleeve, a second nut and a straight shank grinder head set;

a rear end of the second coupling shaft is a polygonal prism structure, and a front end of the second coupling shaft is provided with an external thread;

The second coupling sleeve includes a second sleeve portion and a second connecting portion; the second sleeve portion has a cylindrical structure, the outer surface is provided with an external thread, and the second connecting portion is a polygonal prism structure. The front end of the second connecting portion is connected to the rear end of the second bushing portion as a unitary structure; and the second connecting portion is provided with a second connecting shaft through hole communicating with the second bushing portion; a second steel ball engaging groove is disposed on an outer surface of the second connecting portion;

a front end of the second coupling shaft is rotationally inserted into the second coupling shaft through hole; a rear end of the straight shank grinder head group passes through the second nut and a front end thread of the second coupling shaft Connecting; the second nut is screwed to the second sleeve portion.

The angle grinder portion includes a third coupling shaft, a third connecting sleeve, a third nut and an angle grinder head set;

The front end and the rear end of the third coupling shaft are all polygonal prism structures;

The third coupling sleeve includes a third sleeve portion and a third connecting portion; the third sleeve portion has a cylindrical structure, the outer surface is provided with an external thread, and the third connecting portion is a polygonal prism structure. The front end of the third connecting portion is connected to the rear end of the third bushing portion as a unitary structure; and the third connecting portion is provided with a third connecting shaft through hole communicating with the third bushing portion; a third steel ball snap groove is disposed on an outer surface of the third connecting portion;

The front end of the third coupling shaft is rotationally inserted into the perforation of the third coupling shaft;

The angle grinder head group is inserted into the front end of the third coupling shaft after passing through the third nut;

The third nut is threadedly coupled to the angle grinder head set and the third connecting sleeve, respectively.

The angle grinder head set includes a drive shaft, an L-shaped adapter, a transmission helical gear, a fixing screw sleeve, a transmission shaft, a collet and a collet nut;

The drive shaft is a stepped cylindrical structure, a front helical gear is disposed at a front end of the drive shaft, and an axial polygonal prismatic hole is disposed at a rear end of the drive shaft;

The L-shaped joint is an L-shaped pipe structure, wherein an outer thread is arranged on the outer side of the pipe wall at the rear end, and an inner thread is arranged on the inner side of the pipe wall at the front end;

The drive shaft is a stepped cylindrical structure; the front end of the drive shaft is provided with an axial collet mounting hole, and an outer thread is provided on an outer side wall provided at one end of the collet mounting hole; the collet Plugged into the collet mounting hole, and threadedly connected to the external thread of the drive shaft by the collet nut;

The fixing screw sleeve and the transmission helical gear are sleeved on the transmission shaft, and the fixing screw sleeve is fixedly connected with the internal thread of the front end of the L-shaped adapter;

The transmission helical gear meshes with the active helical gear; the front end of the third coupling shaft is inserted into the polygonal prism hole;

The third nut is threadedly engaged with the external thread of the rear end of the L-shaped adapter.

The beneficial effects of the invention are:

The invention realizes a body group and a plurality of transmission groups through a connection structure, breaks through the combination of a single tool, realizes multi-purpose of one machine, thereby filling the demand of the customer for multiple tools and reducing the use cost of the customer.

DRAWINGS

1 is an exploded view of a body set and a connection structure of the present invention;

Figure 2 is a partial exploded view of the ratchet wrench;

Figure 3 is a partial exploded view of the straight shank grinder;

Figure 4 is a partial exploded view of the angular grinder;

Figure 5 is an exploded view of the body set with a ratchet wrench portion;

Figure 6 is an exploded view of the body set with a straight shank grinder section;

Fig. 7 is an exploded view of the body group of the angular engraving machine.

Description of the reference numerals

1 handle body, 2 trigger, 3 trigger buckle, 4 torsion spring, 5 cylindrical elastic pin, 6 cylindrical elastic pin, 7O ring, 8O ring, 9 stem, 10 spring, 11O ring, 12 screw plug, 13 silencer Sheet, 14 intake screw, 15 rear cover bearing, 16 rear cover, 17 steel ball, 18 rotor, 19 blade, 20 cylinder, 21 front cover, 22 cylindrical elastic pin, 23 front cover bearing, 24 fixed seat bushing, 25 Fixed seat, 26 steel ball, 27O ring, 28 locking ring, 29 compression spring, 30 jacket, 31 shaft retaining ring, 32 drive guide sleeve, 33 first coupling shaft, 34 first coupling sleeve, 35 bearing, 36 gear Ring, 37 idler set, 38 idler pin, 39 idler seat, 40 first nut, 41 oil bushing, 42 eccentric bearing, 43 eccentric shaft, 44 active bushing, 45 ratchet handle, 46 ratchet yoke, 47 Direction twist, 48 top set spring, 49 top set, 50 wave washer, 51 ratchet head, 52 ratchet pin, 53 ratchet pawl, 54 thrust washer, 55 hole retaining ring, 56 anti-off spring, 57 handle body sheath , 303 third coupling shaft, 304 third coupling sleeve, 305 bearing, 306 third nut, 307 cap, 308 bearing, 309 drive shaft, 400L adapter, 401 oil valve, 402 bearing, 403 transmission helical gear, 404 fixed Wire sleeve, 405 drive shaft, 406 semi-circular key, 407 chuck, 408 chuck nut, 409 bearing, 230 bearing, 330 second coupling shaft, 340 second coupling sleeve, 350 second nut, 360 collet seat, 370 chuck, 380 collet nut.

Detailed ways

The following is a detailed description of the technical solutions of the present invention by way of examples, and the following embodiments are merely illustrative and are not to be construed as limiting the technical solutions of the present invention.

The application provides a pneumatic tool quick connection structure, as shown in FIG. 1, comprising a body group, a connection structure and two or more transmission groups.

The body group and the connecting structure are connected as an integral structure, and each of the transmission groups can be respectively engaged with the connecting structure.

In the technical solution of the present application, the transmission group is a ratchet wrench portion, a straight shank grinder portion or an angular grinder portion, and in other embodiments of the present application, a partial improvement of the transmission group can also be adapted. Pneumatic tools for other purposes, such as pneumatic screwdrivers, pneumatic drills, air shovel, pneumatic sanders, pneumatic cutters, gas shears, etc., may be connected to the body set through the connection structure of the present application.

In the body group of the present application, a part of the structure is prior art, for example, an air intake screw 14 for providing a gas source for rotating the body group, a sound absorbing sheet 13 for reducing sound, a trigger 2 for controlling whether the body group is rotated or not The trigger 3 for operating the body group, the torsion spring 4, and the valve stem 9, the spring 10, and the screw plug 12 for controlling whether the air source enters are all prior art, and the connection relationship thereof is also in the present application. There is no improvement, and only a brief description is made herein, and is not within the scope of the present application.

The muffler 13 is disposed at the rear end of the body of the handle body 1, and the intake screw 14 is screwed to the rear end of the handle body; the valve stem 9 is disposed in the cavity of the handle body, and the spring 10 and the O-ring (7, 8) After being placed on the valve stem, the screw plug 12 is restrained in the cavity of the handle body; the trigger is connected to the handle body through the cylindrical elastic pin 6, and the trigger is movably abutted against the valve stem, and the cylindrical elastic pin 5 is passed on the trigger 2 A torsion spring 4 and a trigger button 3 are connected for controlling the trigger.

The body group includes a handle body 1 and a cylinder, and the cylinder is disposed in the handle body, and the front end of the inner cavity of the handle body is provided with an internal thread.

The cylinder includes a rear cover 16, a rotor 18, a vane 19, a cylinder block 20 and a front cover 21. The vane is disposed on the rotor and disposed in the cylinder body. The rear cover is sleeved on the rear axle of the rotor, and the rear axle is also sleeved on the rear axle. The cover bearing 15 is for supporting the rear axle, and the rear cover is fixedly connected with the rear end of the cylinder; the front cover 21 is sleeved on the front axle of the rotor, and the front axle bearing 23 is further sleeved on the front axle for supporting the front axle, the front The cover is fixedly connected to the front end of the cylinder block.

In the present application, the structure of the blade, the cylinder, the rotor and the back cover are the same as in the prior art, and in this part, the front axle and the front cover are improved because the front cover adds a pin connected to the fixed seat. hole.

The improvement of the front axle is one of the key improvements of the present application. The front axle of the present application consists of two parts, a hexagonal prism and a cylinder, wherein the cylinder is connected between the hexagonal prism and the rotor.

In the technical solution of the present application, a handle body sheath 57 is further disposed outside the handle body 1 for shockproof and anti-fall, and improves the comfort of the hand feeling and improves the quality of the product.

The connecting structure of the present application comprises a fixing seat 25, a locking ring 28, a compression spring 29, a jacket 30, a shaft retaining ring 31 and a transmission guide sleeve 32, wherein a part of the fixing seat is disposed in the inner cavity of the handle body, and the front cover They are connected by a cylindrical elastic pin 22.

In the present application, one end to which the intake screw is connected with the handle body is the rear end, and the end opposite to the rear end is the front end. Therefore, in the other components of the present application, the front end of any of the components in FIGS. 1 to 7 and The rear end is the same as the handle body. As shown in Fig. 1, the end of the rotor close to the front end of the handle is the rear end of the rotor, and the end far from the front end of the handle is the front end of the rotor; the end of the cylinder close to the front end of the rotor is the rear end of the cylinder. The end away from the front end of the rotor is the front end of the cylinder; the front and rear ends of all components of the present application are named in this direction.

The fixing seat 25 of the present application has a cylindrical tube structure, and a rear end of the fixing base is disposed along the radial direction of the fixed tube, and a cylindrical elastic pin hole is disposed on the extension. The rear end of the fixing seat of the present application is sleeved on The front cover is attached and connected by a cylindrical elastic pin 22.

A plurality of steel ball mounting holes are arranged on a side surface of the fixing seat, and the steel ball mounting holes communicate with the inner cavity of the fixing seat, and a steel ball 26 is disposed in each steel ball mounting hole, and a part of the outer surface of the steel ball protrudes into the fixing seat In the lumen.

The front end inner cavity of the fixing seat is polygonal; in the present application, the front end inner cavity of the fixing seat is hexagonal.

A ring groove is provided on the side surface of the fixing seat near the front end.

The outer side surface of the locking ring 28 of the present application is provided with an external thread, and a rear end of the locking ring is provided with an inner edge extending radially inwardly, and a front end of the locking ring is provided with a ring extending radially outward. The outer edge of the fixing sleeve is formed on the fixing seat, and the outer side surface of the fixing seat forms a ring receiving cavity with the inner side of the locking ring. The compression spring 29 is disposed in the receiving cavity, and the rear end of the compression spring 29 abuts On the inner surface of the inner edge, the outer sleeve 30 is sleeved on the fixing seat and is engaged with the steel ball 26 in a movable manner. The front end of the compression spring is abutted against the rear end of the outer casing; the external thread of the locking ring is matched with the internal thread of the front end of the handle body. The cylinder and the fixing seat are fixed in the handle body.

The shaft retaining ring 31 is engaged in the card slot for limiting the outer sleeve 30;

The front end of the front axle extends into the fixing seat, and the inner cavity of the transmission guide sleeve 32 is hexagonal; the rear end of the transmission guide sleeve is inserted into the interference fit of the front end of the front axle.

Example 1

The body assembly and the connecting structure are connected to the ratchet wrench portion to form a pneumatic ratchet wrench, as shown in FIG. 2 and FIG. 5, wherein the ratchet wrench portion includes a first coupling shaft 33, a first connecting sleeve 34, a gear set, and a first The nut 40, the eccentric shaft 43, the eccentric shaft bearing 42, and the ratchet head set.

The first coupling shaft 33 of the present application includes a rear end, a connecting portion and a front end. The rear end of the first coupling shaft is a hexagonal prism for inserting and connecting with the hexagonal cavity of the transmission guide sleeve 32. The connecting portion is cylindrical. The front end side surface of the first coupling shaft is provided with an axial outer rib.

The first connecting sleeve 34 includes a first sleeve portion and a first connecting portion; the first sleeve portion has a cylindrical structure, the first connecting portion has a hexagonal prism structure, and the front end of the first connecting portion and the first sleeve portion The back end is connected as an integral structure; the first connecting portion is provided with a first connecting shaft through hole communicating with the first sleeve portion; on the outer surface of the first connecting portion, a ring of the first steel ball engaging groove is provided; when the ratchet wrench is When the part is engaged with the connecting structure, the first connecting part is inserted into the fixing seat, so that the first steel ball engaging groove is opposite to the steel ball mounting hole, and the part of the steel ball enters into the first steel ball engaging groove, so that the first connecting sleeve Connected to the mount.

The front end of the inner cavity of the first sleeve portion is provided with an internal thread. The front end of the first coupling shaft is inserted into the first coupling shaft through hole, and a bearing 35 is fitted into the front end of the first coupling shaft for supporting the first coupling shaft 33.

The gear set includes a gear ring 36, an idler gear set 37, an idler pin 38 and an idler seat 39; the gear ring is a cylindrical structure, the outer surface of the gear ring is provided with an external thread; and the internal thread is used for the same as the first sleeve portion Threaded connection.

The inner surface of the gear ring is provided with an axial internal tooth pattern, and the idler wheel group is meshed with the inner tooth groove; the outer tooth pattern of the first coupling shaft is meshed with the idle gear group; the specific structure is that the idle gear group of the embodiment is composed of three The outer gear is composed of the outer tooth of the first coupling shaft simultaneously meshing with the three outer gears. An idler pin hole is provided in each of the external gears.

The idler seat 39 has a cylindrical structure, and an eccentric shaft insertion hole and an idler pin insertion hole are provided on the idler seat, and the idler gear set is coupled to the idler seat through the idler pin.

The eccentric shaft bearing 42 is sleeved on the eccentric shaft 43. In the embodiment, the oil eccentric sleeve 41 is further sleeved on the eccentric shaft 43. The rear end of the eccentric shaft is inserted into the eccentric shaft socket of the idler seat, and the front end of the eccentric shaft Connected to the ratchet head set.

The first nut 40 is coupled to the external thread of the ratchet head set and the gear ring 36, respectively.

The ratchet head set includes a ratchet handle 45, a ratchet yoke 46, a direction twist 47, a ratchet head 51, a wave washer 50, a ratchet pin 52, a ratchet pawl 53, a thrust washer 54, a hole retaining ring 55, and the like.

In the present application, the structure of the ratchet head set is not improved in the prior art, and therefore, the structure of the ratchet head set is not described in detail in the present application.

Example 2

The embodiment is composed of the above-mentioned body group, the connecting structure and the straight shank grinder, as shown in FIG. 3 and FIG. 6, wherein the straight shank grinder includes a second connecting shaft 330, Two coupling sleeves 340, a second nut 350 and a straight shank engraving head set.

The rear end of the second coupling shaft 330 is a hexagonal prism structure for inserting and mating with the hexagonal inner cavity of the front end of the transmission guide sleeve 32. The front end of the second coupling shaft is provided with an external thread; the front end of the second coupling shaft is externally The surface also includes a smooth portion that is used for the bearing 230 to be nested.

The second coupling sleeve 340 includes a second sleeve portion and a second connecting portion; the second sleeve portion has a cylindrical structure, the outer surface is provided with an external thread, the second connecting portion is a hexagonal prism structure, and the front end of the second connecting portion Connecting with the rear end of the second sleeve portion as a unitary structure; providing a second coupling shaft through hole communicating with the second sleeve portion on the second connecting portion; and providing a second steel ball on the outer surface of the second connecting portion Card slot.

When the straight shank grinder portion is engaged with the connecting structure, the second connecting portion is inserted into the fixing seat, so that the second steel ball engaging groove is opposite to the steel ball mounting hole, and the portion of the steel ball enters the second steel ball engaging groove, The second connecting sleeve is connected to the fixing seat.

The front end of the second coupling shaft is rotated into the second coupling shaft through hole; the rear end of the straight shank grinding head group is threadedly connected to the front end of the second coupling shaft through the second nut; the second nut and the second shaft The sleeve is threaded.

The specific structure is that the straight shank grinder head set includes a collet seat 360, a collet 370 and a collet nut 380; the rear end inner cavity of the collet seat is provided with an internal thread for the outer end of the second coupling shaft The threaded thread is connected, and the chuck is inserted into the inner cavity of the front end of the chuck seat, and an external thread is arranged on the outer side of the front end of the chuck seat for screwing with the chuck nut.

Example 3

In this embodiment, the pneumatic engraving machine comprising the above-mentioned body group and the connecting structure and the angle grinder portion is as shown in FIG. 4 and FIG. 7 , wherein the angular grinder portion includes a third connecting shaft 303 , The three connecting sleeves 304, the third nut 306 and the angular grinding head group.

The front end and the rear end of the third coupling shaft 303 are both hexagonal prism structures; a connecting portion is provided between the front end of the third coupling shaft and the rear end, and the connecting portion is a cylindrical structure for passing through the bearing 305, the bearing 305 It is used to support the third coupling shaft 303.

The third coupling sleeve 304 includes a third sleeve portion and a third connecting portion; the third sleeve portion has a cylindrical structure, the outer surface is provided with an external thread, the third connecting portion is a hexagonal prism structure, and the front end of the third connecting portion Connecting with the rear end of the third sleeve portion as a unitary structure; the third connecting portion is provided with a third coupling shaft through hole communicating with the third sleeve portion; and on the outer surface of the third connecting portion, a third steel ball is disposed Card slot;

The front end of the third coupling shaft is rotated into the perforation of the third coupling shaft.

The angle grinder head group is inserted into the third nut 306 to be mated with the front end of the third coupling shaft 303.

The angular grinder head set includes a drive shaft 309, an L-shaped adaptor 400, a drive bevel gear 403, a set screw sleeve 404, a drive shaft 405, a collet 407, and a collet nut 408.

The driving shaft is a stepped cylindrical structure, and a driving helical gear is disposed at a front end of the driving shaft, and an axial hexagonal cylindrical hole is disposed at a rear end of the driving shaft, and a front end of the third coupling shaft is inserted into the hexagonal cylindrical hole .

The L-shaped adapter is an L-shaped tube structure, wherein an outer thread is arranged on the outer side of the rear end wall, and an inner thread is arranged on the inner side of the front wall; the drive shaft is disposed in the tube body at the rear end of the L-shaped joint, and one end of the third nut The outer thread of the third sleeve portion is threadedly engaged, and the other end of the third nut is threadedly engaged with the external thread of the rear end of the L-shaped joint.

The drive shaft is a stepped cylindrical structure; the front end of the drive shaft is provided with an axial collet mounting hole, and an external thread is provided on an outer side wall provided at one end of the collet mounting hole; the collet is inserted into the collet mounting hole And the nut is threadedly connected to the external thread of the drive shaft by the collet nut.

The fixing screw sleeve and the transmission helical gear are sleeved on the transmission shaft, and the fixing screw sleeve is fixedly connected with the internal thread of the front end of the L-shaped adapter.

The transmission helical gear meshes with the active helical gear; the front end of the third coupling shaft is inserted into the polygonal prism hole.

While the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art The scope of the invention is defined by the appended claims and their equivalents.

Claims

A pneumatic tool quick connection structure, comprising: a body group, a connection structure and two or more transmission groups;

The body group and the connecting structure are connected as a unitary structure; each of the transmission groups is respectively engaged with the connecting structure.
The pneumatic tool quick connect structure according to claim 1, wherein the transmission group is a ratchet wrench portion, a straight shank grinder portion or an angular grinder portion.
The quick connect structure of the pneumatic tool according to claim 1, wherein the body set comprises a handle body and a cylinder; the cylinder is disposed in the handle body;

The cylinder includes a back cover, a rotor, a blade, a cylinder block and a front cover;

The blade is disposed on the rotor and disposed in the cylinder body, the rear cover is sleeved on the rear axle of the rotor, and the rear cover is fixedly connected with the rear end of the cylinder; the front cover is sleeved on The front cover of the rotor is fixedly connected to the front end of the cylinder;

The front end of the inner cavity of the handle body is provided with an internal thread; the front end of the front shaft is a polygonal prism structure.
The pneumatic tool quick connect structure according to claim 3, wherein the body set further comprises a handle body sheath, and the handle body sheath is sleeved outside the handle body.
The quick connect structure of the pneumatic tool according to claim 1, wherein the connecting structure comprises a fixing seat, a locking ring, a compression spring, a jacket, a shaft retaining ring and a transmission guide sleeve;

The fixing base is a cylindrical tube structure; a plurality of steel ball mounting holes are disposed on the fixing base, and the steel ball mounting holes communicate with the inner cavity of the fixing seat, and are disposed in each of the steel ball mounting holes a steel ball, the front end inner cavity of the fixing seat is polygonal;

a ring groove is disposed on a side surface of the fixing seat near the front end;

The fixing seat is disposed in the handle body and is engaged with the front cover;

The locking ring is threadedly connected to the front end of the handle body after being fastened to the fixing seat;

The pressure spring and the outer sleeve are sequentially sleeved on the fixing seat, and the outer sleeve is engaged with the fixing seat by the steel ball; the shaft retaining ring is engaged in the card slot;

The inner diameter of the transmission guide sleeve is polygonal; the rear end of the transmission guide sleeve is mated with the front end of the front shaft.
The pneumatic tool quick connect structure according to claim 2, wherein the ratchet wrench portion comprises a first coupling shaft, a first connecting sleeve, a gear set, a first nut, an eccentric shaft, an eccentric shaft bearing and a ratchet head group;

The first connecting sleeve includes a first sleeve portion and a first connecting portion; the first sleeve portion is a cylindrical structure, the first connecting portion is a polygonal prism structure, and the front end of the first connecting portion Connecting with the rear end of the first sleeve portion as a unitary structure; providing, on the first connecting portion, a first coupling shaft through hole communicating with the first sleeve portion; outside the first connecting portion a surface of the first steel ball snap groove;

The front end of the inner cavity of the first sleeve portion is provided with an internal thread;

The rear end of the first coupling shaft is a polygonal prism structure, and the front end side surface of the first coupling shaft is provided with external ribs;

The gear set is disposed in the first sleeve portion and meshes with an outer tooth of the first coupling shaft;

The eccentric shaft bearing sleeve is sleeved on the eccentric shaft, the rear end of the eccentric shaft is mated with the gear set, and the front end of the eccentric shaft is connected with the ratchet head set;

The first nut is threadedly coupled to the ratchet head set and the gear set, respectively.
The pneumatic tool quick connect structure according to claim 6, wherein the gear set comprises a gear ring, an idler gear set, an idler pin and an idler seat;

The gear ring is a cylindrical structure, and an outer surface of the gear ring is provided with an external thread;

An inner surface of the gear ring is provided with an axial inner tooth, the idler gear meshes with the inner tooth; and an outer tooth of the first coupling shaft is engaged with the idler gear;

The idler seat has a cylindrical structure, and an eccentric shaft insertion hole and an idler pin insertion hole are disposed on the idler seat, and the idler set is coupled to the idler seat through the idler pin.
The pneumatic tool quick connect structure according to claim 2, wherein the straight shank grinder portion comprises a second coupling shaft, a second coupling sleeve, a second nut and a straight shank grinder head set;

a rear end of the second coupling shaft is a polygonal prism structure, and a front end of the second coupling shaft is provided with an external thread;

The second coupling sleeve includes a second sleeve portion and a second connecting portion; the second sleeve portion has a cylindrical structure, the outer surface is provided with an external thread, and the second connecting portion is a polygonal prism structure. The front end of the second connecting portion is connected to the rear end of the second bushing portion as a unitary structure; and the second connecting portion is provided with a second connecting shaft through hole communicating with the second bushing portion; a second steel ball engaging groove is disposed on an outer surface of the second connecting portion;

a front end of the second coupling shaft is rotationally inserted into the second coupling shaft through hole; a rear end of the straight shank grinder head group passes through the second nut and a front end thread of the second coupling shaft Connecting; the second nut is screwed to the second sleeve portion.
The pneumatic tool quick connect structure according to claim 2, wherein the angular grinder portion comprises a third coupling shaft, a third connecting sleeve, a third nut and an angular grinding head group;

The front end and the rear end of the third coupling shaft are all polygonal prism structures;

The third coupling sleeve includes a third sleeve portion and a third connecting portion; the third sleeve portion has a cylindrical structure, the outer surface is provided with an external thread, and the third connecting portion is a polygonal prism structure. The front end of the third connecting portion is connected to the rear end of the third bushing portion as a unitary structure; and the third connecting portion is provided with a third connecting shaft through hole communicating with the third bushing portion; a third steel ball snap groove is disposed on an outer surface of the third connecting portion;

The front end of the third coupling shaft is rotationally inserted into the perforation of the third coupling shaft;

The angle grinder head group is inserted into the front end of the third coupling shaft after passing through the third nut;

The third nut is threadedly coupled to the angle grinder head set and the third connecting sleeve, respectively.
The pneumatic tool quick connect structure according to claim 9, wherein the angular grinding head group comprises a drive shaft, an L-shaped adapter, a transmission helical gear, a fixing screw sleeve, a transmission shaft, a collet and a clamp. Head nut

The drive shaft is a stepped cylindrical structure, a front helical gear is disposed at a front end of the drive shaft, and an axial polygonal prismatic hole is disposed at a rear end of the drive shaft;

The L-shaped joint is an L-shaped pipe structure, wherein an outer thread is arranged on the outer side of the pipe wall at the rear end, and an inner thread is arranged on the inner side of the pipe wall at the front end;

The drive shaft is a stepped cylindrical structure; the front end of the drive shaft is provided with an axial collet mounting hole, and an outer thread is provided on an outer side wall provided at one end of the collet mounting hole; the collet Plugged into the collet mounting hole, and threadedly connected to the external thread of the drive shaft by the collet nut;

The fixing screw sleeve and the transmission helical gear are sleeved on the transmission shaft, and the fixing screw sleeve is fixedly connected with the internal thread of the front end of the L-shaped adapter;

The transmission helical gear meshes with the active helical gear; the front end of the third coupling shaft is inserted into the polygonal prism hole;

The third nut is threadedly engaged with the external thread of the rear end of the L-shaped adapter.