Pneumatic tool

Abstract

The pneumatic tool comprises a body and a driving set, the body is provided with an air cylinder chamber, two bearing grooves and two bearings, the air cylinder chamber is arranged in the body, the two bearing grooves are formed in the front wall face and the rear wall face of the body respectively and communicated with the air cylinder chamber, and the two bearings are arranged in the two bearing grooves respectively and communicated with the air cylinder chamber. The driving set is combined with the body and provided with an air cylinder, a rotor and two abrasion-resistant pieces, the air cylinder is arranged in the air cylinder chamber and located between the front wall face and the rear wall face of the body, and the rotor is rotatably arranged in the air cylinder and provided with a rotating shaft. The front end and the rear end of the rotating shaft extend out of the air cylinder and are respectively combined with one of the bearings of the body, the two wear-resistant sheets are arranged in the air cylinder chamber, are positioned between the front wall surface and the rear wall surface of the body and the air cylinder and are attached to the air cylinder and the rotating shaft, and the pneumatic tool saves cost, improves structural strength and is stable in transmission.

Description

Technical Field

[0001] The present invention relates to a pneumatic tool, particularly a pneumatic tool that saves costs, improves structural strength, and has stable transmission. Background Art

[0002] Existing pneumatic tools can be used through high-pressure gas and mainly include a body, a drive group, and an operation group; among them, the body is provided with several air channels for the flow of high-pressure gas, the drive group is arranged in the body and communicated with the several air channels, so that the high-pressure gas can drive the drive group to act through the several air channels, and the operation group is combined with the body to control the flow direction of the high-pressure gas in the several air channels, thereby enabling the existing pneumatic tool to operate on components such as nuts and bolts.

[0003] In order for the existing pneumatic to accurately drive the drive group with high-pressure gas and avoid the problem of high-pressure gas leakage, please refer to Figure 7 As shown, the drive group of the existing pneumatic tool 40 is provided with a cylinder 41, a rotor 42, a front end plate 43, and a rear end plate 44. The rotor 42 is rotatably arranged in the cylinder 41, and the front and rear end plates 43, 44 are respectively arranged on the front and rear sides of the cylinder 41 to enclose the high-pressure gas entering the cylinder 41, so that the high-pressure gas can drive the rotor 42. Among them, in order for the rotor 42 of the drive group of the existing pneumatic tool 40 to rotate stably relative to the cylinder 41, a bearing groove 431, 441 is respectively arranged on the front end plate 43 and the rear end plate 44, and a bearing 45 is arranged in each of the bearing grooves 431, 441, so that the rotor 42 can rotate stably relative to the cylinder 41 by being combined with the two bearings 45.

[0004] However, in order for the high-pressure gas flowing into the cylinder 41 of the existing pneumatic tool 40 not to leak, the front end plate 43 and the rear end plate 44 need to be respectively manufactured on the front and rear sides of the cylinder 41, which not only increases the manufacturing cost but also increases the assembly time; further, in order for the existing pneumatic tool 40 to prevent the two bearings 45 from displacing or detaching relative to the front and rear end plates 43, 44, the two bearings 45 are respectively press-fitted into the bearing grooves 431, 441 of the front and rear end plates 43, 44 in a way of compression deformation during assembly, so as to achieve the effect of stable combination. However, the structural strength of the two end plates 43, 44 forming the two bearing grooves 431, 441 is insufficient. Therefore, this press-fitting assembly method will cause structural deformation of the front and rear end plates 43, 44, and the deformed front and rear end plates 43, 44 are prone to contact with the rotor 42 and generate friction, which not only causes wear between the aforementioned components but also generates sound and noise between the mutually friction components, affecting the use quality of the existing pneumatic tool 40.

[0005] As described above, when the drive group of the existing pneumatic tool 40 is manufactured and assembled, since the front end plate 43 and the rear end plate 44 need to be provided, it will not only increase the manufacturing cost but also increase the time required for assembly. Moreover, the method of tightly fitting the two bearings 45 will cause the front end plate 43 and the rear end plate 44 to deform, affecting their structural strength. Also, the deformed front end plate 43 and rear end plate 44 will also affect the rotation of the rotor 42, resulting in problems such as wear and noise. Therefore, there is indeed a need for improvement in the existing pneumatic tool 40. Summary of the Invention

[0006] To solve the problems and deficiencies of the existing pneumatic tools during manufacturing, assembly, and use, the present invention provides a pneumatic tool that can, through structural settings, provide a pneumatic tool that saves costs, improves structural strength, and has stable transmission.

[0007] For the above purpose, the present invention aims to provide a pneumatic tool, which includes a body and a drive group, wherein:

[0008] The body is provided with a cylinder chamber, two bearing grooves, and two bearings. The cylinder chamber is provided inside the body. The two bearing grooves are respectively formed on the front and rear wall surfaces of the body and communicate with the cylinder chamber. The two bearings are respectively provided in the two bearing grooves; and

[0009] The drive group is combined with the body and is provided with a cylinder, a rotor, and two wear-resistant sheets. The cylinder is arranged in the cylinder chamber and located between the front and rear wall surfaces of the body. The rotor is rotatably arranged in the cylinder and is provided with a rotating shaft. The front and rear ends of the rotating shaft extend out of the cylinder and are respectively combined with one of the bearings of the body. The two wear-resistant sheets are arranged in the cylinder chamber and located between the front and rear wall surfaces of the body and the cylinder, and are in contact with the cylinder and the rotating shaft.

[0010] Furthermore, in the above pneumatic tool, each of the wear-resistant sheets has at least one wear-resistant surface that is in contact with the rotating shaft.

[0011] Still further, in the above pneumatic tool, each of the wear-resistant sheets is provided with two wear-resistant surfaces.

[0012] Preferably, in the above pneumatic tool, each of the wear-resistant sheets is provided with a coupling bolt that is combined with the cylinder, thereby positioning each of the wear-resistant sheets between the body and the cylinder.

[0013] Preferably, in the above pneumatic tool, one of the bearing grooves is recessed in the front-side wall surface of the body, and the other bearing groove is recessed in a rear cover of the body.

[0014] With the above technical features, when manufacturing the pneumatic tool of the present invention, only two bearing grooves need to be formed on the body, and then the two bearings can be conveniently arranged in the two bearing grooves. The manufacturing and assembly are relatively convenient, saving time and cost. Moreover, the front and rear wall surfaces of the body will not be structurally deformed due to the assembly of the two bearings, effectively ensuring the structural strength of the body and avoiding problems such as wear and noise caused by the contact between the rotating shaft of the rotor and the body. In addition, the two wear-resistant sheets arranged between the front and rear wall surfaces of the body and the cylinder not only effectively ensure the stable transmission of power during the rotation of the rotating shaft, but also can extend the service life of the pneumatic tool, thereby providing a pneumatic tool that saves costs, improves structural strength and has stable transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 FIG. is a three-dimensional external view of a preferred embodiment of the present invention.

[0016] Figure 2 FIG. is another three-dimensional external view of a preferred embodiment of the present invention.

[0017] Figure 3 FIG. is a partial three-dimensional exploded view of a preferred embodiment of the present invention.

[0018] Figure 4 FIG. is another partial three-dimensional exploded view of a preferred embodiment of the present invention.

[0019] Figure 5 FIG. is a partial enlarged three-dimensional sectional view of a preferred embodiment of the present invention.

[0020] Figure 6 FIG. is a partial enlarged sectional side view of a preferred embodiment of the present invention.

[0021] Figure 7 FIG. is a partial enlarged sectional side view of an existing pneumatic tool. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0022] To understand in detail the technical features and practical effects of the present invention and to be able to implement it in accordance with the content of the specification, the following further details the preferred embodiments shown in the drawings:

[0023] The present invention is a pneumatic tool, and its preferred embodiment is as Figures 1 to 4 shown. The pneumatic tool is provided with a body 10 and a drive group 20, wherein:

[0024] Please refer to Figure 3 , Figure 5 and Figure 6As shown, the body 10 is provided with a cylinder chamber 11, two bearing grooves 12 and two bearings 13. Among them, the cylinder chamber 11 is horizontally arranged inside the body 10. The two bearing grooves 12 are respectively formed on the front and rear wall surfaces of the body 10 and communicate with the cylinder chamber 11. Preferably, one of the bearing grooves 12 is recessed in the front wall surface of the body 10, and the other bearing groove 12 is recessed in a rear cover 14 of the body 10. The two bearings 13 are respectively arranged in the two bearing grooves 12.

[0025] Please refer to, for example, Figure 3 , Figure 5 and Figure 6 As shown, the drive group 20 is combined with the body 10 and is provided with a cylinder 21, a rotor 22 and two wear-resistant plates 23, 24. The cylinder 21 is arranged in the cylinder chamber 11 and is located between the front and rear wall surfaces of the body 10. The rotor 22 is rotatably arranged in the cylinder 21 and is provided with a rotating shaft 221. The front and rear ends of the rotating shaft 221 extend out of the cylinder 21 and are respectively combined with one of the bearings 13 of the body 10, so that the rotor 22 can rotate relative to the cylinder 21 by means of the combination of the rotating shaft 221 and the two bearings 13. The two wear-resistant plates 23, 24 are arranged in the cylinder chamber 11 and are located between the front and rear wall surfaces of the body 10 and the cylinder 21, and are in contact with the cylinder 21 and the rotating shaft 221; further, each of the wear-resistant plates 23, 24 has at least one wear-resistant surface 231, 241 in contact with the rotating shaft 221; furthermore, each of the wear-resistant plates 23, 24 is provided with two wear-resistant surfaces 231, 241; preferably, each of the wear-resistant plates 23, 24 is provided with a coupling bolt 232, 242 for coupling with the cylinder 21, so as to position each of the wear-resistant plates 23, 24 between the body 10 and the cylinder 21.

[0026] Please refer to, for example, Figure 5 and Figure 6As shown, when manufacturing the pneumatic tool of the present invention, only the two bearing grooves 12 need to be formed on the front and rear side walls of the body 10, and it is not necessary to separately manufacture the front and rear end plates 43 and 44 as in the existing pneumatic tool 40. This not only reduces the time and cost required for manufacturing, but also eliminates the need to assemble the front and rear end plates 43 and 44, thus reducing the time and labor required for assembly. Further, since the two bearing grooves 12 are formed on the front and rear side walls of the body 10, when the two bearings 13 are respectively disposed in the two bearing grooves 12, the front and rear side walls of the body 10 will not be structurally deformed due to tight fitting, avoiding the situation where the rotation shaft 221 of the rotor 22 comes into contact with the body 10, so that the rotation shaft 221 of the rotor 22 will not rub against the body 10 during rotation, effectively improving the problems such as wear, noise, and generation of sound caused by mutual friction between related components due to structural deformation during the use of the existing pneumatic tool 40. Still further, the two wear-resistant plates 23 and 24 are provided between the front and rear side walls of the body 10 and the cylinder 21 of the pneumatic tool of the present invention. This not only avoids the phenomenon of wear of the body 10 caused by the rotation of the rotation shaft 221, but also enables the rotation shaft 221 to rotate stably, improving the quality of use of the pneumatic tool of the present invention. Moreover, each of the wear-resistant plates 23 and 24 is provided with two wear-resistant surfaces 231 and 241. When one of the wear-resistant surfaces 231 and 241 is worn after long-term use, the other wear-resistant surface 231 and 241 can be brought into contact with the rotation shaft by flipping, and then it can be used. The assembly is relatively convenient and can effectively extend the service life of the pneumatic tool, thereby achieving the effect of cost savings.

[0027] With the above technical features, when manufacturing the pneumatic tool of the present invention, only the two bearing grooves 12 need to be formed on the body 10, and then the two bearings 13 can be conveniently disposed in the two bearing grooves 12. The manufacturing and assembly are relatively convenient and time- and cost-saving. Moreover, the front and rear wall surfaces of the body 10 will not be structurally deformed due to the assembly of the two bearings 13, effectively ensuring the structural strength of the body 10 and avoiding problems such as wear and noise generation due to the contact between the rotation shaft 221 of the rotor 22 and the body 10. In addition, the two wear-resistant plates 23 and 24 provided between the front and rear wall surfaces of the body 10 and the cylinder 21 not only effectively ensure the stable transmission of power during the rotation of the rotation shaft 221, but also can extend the service life of the pneumatic tool, thereby providing a pneumatic tool that saves costs, improves structural strength, and has stable transmission.

[0028] The above description is only a preferred embodiment of the present invention and does not impose any form of limitation on the present invention. Any person with ordinary knowledge in the technical field, without departing from the scope of the technical solution proposed by the present invention, using the technical content disclosed by the present invention to make local changes or modifications to the equivalent embodiments, and without departing from the technical solution content of the present invention, still fall within the scope of the technical solution of the present invention.

Claims

1. A pneumatic tool, characterized in that, Comprising a body and a drive group, wherein: The body is provided with a cylinder chamber, two bearing grooves and two bearings. The cylinder chamber is arranged inside the body. The two bearing grooves are respectively formed on the front and rear wall surfaces of the body and communicate with the cylinder chamber. The two bearings are respectively arranged in the two bearing grooves; and The drive group is combined with the body and is provided with a cylinder, a rotor and two wear-resistant pieces. The cylinder is arranged in the cylinder chamber and is located between the front and rear wall surfaces of the body. The rotor is rotatably arranged in the cylinder and is provided with a rotating shaft. The front and rear ends of the rotating shaft extend out of the cylinder and are respectively combined with one of the bearings of the body. The two wear-resistant pieces are arranged in the cylinder chamber and are located between the front and rear wall surfaces of the body and the cylinder, and are in contact with the cylinder and the rotating shaft.

2. The pneumatic tool according to claim 1, characterized in that, Each of the wear-resistant pieces has at least one wear-resistant surface in contact with the rotating shaft.

3. The pneumatic tool according to claim 1 or 2, characterized in that, Each of the wear-resistant pieces is provided with two wear-resistant surfaces.

4. The pneumatic tool according to claim 3, characterized in that, Each of the wear-resistant pieces is provided with a coupling bolt for coupling with the cylinder, thereby positioning each of the wear-resistant pieces between the body and the cylinder.

5. The pneumatic tool according to claim 4, characterized in that, One of the bearing grooves is recessed in the front-side wall surface of the body, and the other bearing groove is recessed in a rear cover of the body.

6. The pneumatic tool according to claim 1 or 2, characterized in that, Each of the wear-resistant pieces is provided with a coupling bolt for coupling with the cylinder, thereby positioning each of the wear-resistant pieces between the body and the cylinder.

7. The pneumatic tool according to claim 1 or 2, characterized in that, One of the bearing grooves is recessed in the front-side wall surface of the body, and the other bearing groove is recessed in a rear cover of the body.

8. The pneumatic tool according to claim 3, characterized in that, One of the bearing grooves is recessed in the front-side wall surface of the body, and the other bearing groove is recessed in a rear cover of the body.

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