TWM563319U - Brake mechanism for pneumatic tool shaft - Google Patents

Abstract

This creation is a brake mechanism for a pneumatic tool shaft, including a tool body, a drive module and a brake module. The tool body has a rotating shaft; the driving module comprises a driving component rotated by the rotating shaft and a switching component coupled to the driving component, the driving component has a first clamping portion, the switching component is used for combining the processing tool; the braking module comprises a button a brake element connected to the button, a spring that elastically pushes the button, and a limit pin; the brake element is provided with a limited hole and a second latch portion, and the brake element is inserted into the limit hole through the limit pin to limit the displacement thereof. Moreover, when the button is pressed, the first clamping portion and the second locking portion can be mutually engaged to prevent the driving component from rotating, so as to facilitate replacement of the processing tool.

Description

Brake mechanism of pneumatic tool shaft

This creation is about pneumatic tools, especially the shaft structure of a pneumatic grinder.

The hand-held pneumatic grinder mainly installs the abrasive material on the pneumatic tool to drive the grinding material to rotate by the pneumatic tool to grind the workpiece. Moreover, the grinding work of a general workpiece often requires the use of abrasive materials having different roughness, and after a period of use, the abrasive material is gradually worn and replaced.

However, since the abrasive material rotates together with the drive shaft in the pneumatic grinder, when the abrasive material is removed and replaced, the drive shaft must be fixed with a wrench, and the other material can be used for the removal of the abrasive material. That is to say, the disassembly and replacement of the abrasive material needs to be carried out by holding the wrench separately by the user's hands, which causes great inconvenience in operation, and thus needs to be improved.

In view of this, the creator has made great efforts to solve the above problems by focusing on the above-mentioned prior art, and has devoted himself to the application of the theory, that is, the goal of the creator's improvement.

One of the aims of the present invention is to provide a brake mechanism for a pneumatic tool shaft, which is configured to compress a brake module so that the drive member does not rotate to facilitate replacement of the processing tool.

In order to achieve the above purpose, the present invention is a brake mechanism for a pneumatic tool shaft, including a tool body, a drive module and a brake module. The tool body has a rotating shaft; the driving module comprises a driving component rotated by the rotating shaft and a switching component coupled to the driving component, the driving component has a first clamping portion, the switching component is used for combining the processing tool; the braking module comprises a button a brake element connected to the button, a spring that elastically pushes the button, and a limit pin; the brake element is provided with a limited hole and a second latch portion, and the brake element is inserted into the limit hole through the limit pin to limit the displacement thereof. Moreover, when the button is pressed, the braking element can clamp the first latching portion and the second latching portion to prevent the driving component from rotating.

Compared with the prior art, the brake mechanism of the pneumatic tool shaft of the present invention applies a force to the button of the brake module, and drives the brake component to move in the direction of the driving component through the pressing of the button, so that the brake component is first. The latching portion and the second latching portion of the driving component are mutually engaged to achieve the function of preventing the driving component from rotating. Instead of the conventional pneumatic tool, the wrench needs to be separately held by both hands to perform the replacement of the processing tool, thereby increasing the creation of the present invention. Convenience and practicality.

The detailed description and technical content of the present invention are described below with reference to the drawings, but the drawings are only for reference and explanation, and are not intended to limit the creation.

Please refer to FIG. 1 to FIG. 3 , which are respectively a perspective perspective view, a partial perspective view and a combined cross-sectional view of the brake mechanism of the pneumatic tool shaft of the present invention. The present invention is a brake mechanism 1 for a pneumatic tool shaft, comprising a tool body 10, a drive module 20 and a brake module 30. The driving module 20 and the braking module 30 are disposed on the tool body 10; further, the driving module 20 is connected to the tool body 10 to drive a processing tool (such as a cutting machine) to perform processing operations ( Such as cutting and other operations). Furthermore, the brake module 30 is disposed on the tool body 10 and can brake the drive module 20. Accordingly, the braking of the brake module 30 can prevent the driving module 20 from rotating to facilitate replacement of the processing tool.

The tool body 10 has a shaft 11 . In the embodiment, the tool body 10 is a pneumatic tool, but the actual implementation is not limited thereto.

The driving module 20 includes a driving component 21 that is rotated by the rotating shaft 11 and a switching component 22 coupled to the driving component 21 . The driving component 21 has at least one first latching portion 211; the adapting component 22 is for bonding to a processing tool (not shown), and the bonding manner thereof may be a fastening, a screwing or the like. In this embodiment, the driving component 21 has a plurality of first latching portions 211 , and the first latching portions 211 are spaced apart from the outer peripheral surface of the driving component 21 .

In an embodiment of the present invention, the rotating shaft 11 of the tool body 10 has a plurality of first gears 111. The driving module 20 further includes a driving gear 23, and the driving gear 23 is engaged with the first gears 111. The drive element 21 rotates.

Furthermore, the brake module 30 includes a button 31, a brake element 32 connecting the button 31, a spring 33 elastically pushing against the button 31, and a limit pin 34. The brake element 32 is provided with a limiting hole 320, and a second latching portion 321 is disposed on the first latching portion 211. The brake element 32 is inserted into the limiting hole 320 through the limiting pin 34 to limit the amount of displacement. When the button 31 is pressed, the brake element 32 can clamp the first latching portion 211 and the second latching portion 321 to prevent the driving component 21 from rotating.

In particular, the brake element 32 is arranged as a cylinder and is located on a side of the button 31 facing the drive element 21. Moreover, the limiting hole 320 of the braking element 32 is an elongated hole penetrating the braking element 32. In addition, the first latching portion 211 is configured as a recess, and the second latching portion 321 is configured as a bump. However, in actual implementation, the first latching portion 211 and the second latching portion 321 are disposed. The structure only needs to achieve mutual clamping.

In the embodiment, the brake mechanism 1 of the pneumatic tool shaft further includes a sleeve 40 that covers the rotating shaft 11 of the tool body 10 and the braking element 32. In more detail, the button 31 of the brake module 30 is disposed on the outer side of the casing 40, and the casing 40 is formed with a mounting groove 41 corresponding to the position of the button 31.

In addition, the casing 40 also has a positioning groove 42 through which the spring 33 can be placed. One end of the spring 33 is disposed in the positioning groove 41, and the other end elastically abuts the button 31. Thereby, when the button 31 is pressed, it can be returned to the original position through the elastic restoring force of the spring 33.

It should be noted that the driving module 20 further includes at least one bearing 24, the driving component 21 is a driving shaft, and the at least one bearing 24 is coupled to the driving component 21. The arrangement of the bearing 24 provides support for the drive element 21 to maintain rotation of the drive element 21 within the casing 40.

It should be noted that, in this embodiment, the driving element 21 has a central axis 210 disposed at an angle of 90 degrees to the rotating shaft 11 of the tool body 10. In actual implementation, the angular setting between the driving element 21 and the rotating shaft 11 may be changed according to actual needs.

Please refer to FIG. 4 and FIG. 5 as a perspective view and a cross-sectional view of the brake mechanism of the pneumatic tool shaft of the present invention. As shown in FIG. 4, the use of the brake mechanism 1 of the pneumatic tool shaft of the present invention is applied to the button 31 of the brake module 30. At this time, the button 31 is pressed and drives the brake element 32 to move in the direction of the driving element 21, and the first latching portion 211 and the second latching portion 321 are clamped to each other, thereby driving the button. Element 21 does not cause rotation.

It should be noted that the spring 33 is also compressed by the button 31 to form a compressed state. Therefore, when the external force is removed, the button 31 and the braking element 32 are returned to the original position through the elastic restoring force of the spring 33, so that the first latching portion 211 and the second latching portion 321 are separated from each other. The state of 掣. Thereby, the drive element 21 will return to the rotatable state.

Please refer to FIG. 6 and FIG. 7 , which are perspective perspective views of another embodiment of the brake mechanism of the pneumatic tool shaft of the present invention and a perspective perspective view of the same. The embodiment is substantially the same as the previous embodiment. The brake mechanism 1a of the pneumatic tool shaft includes a tool body 10a, a drive module 20a and a brake module 30a. The tool body 10a has a rotating shaft 11a. The driving module 20a includes a driving component 21a that is rotated by the rotating shaft 11a and a switching component 22a coupled to the driving component 21a. The brake module 30a has the same structure as the foregoing.

The difference between this embodiment and the previous embodiment is that the driving element 21a has a central axis 210a which is disposed at an angle of 120 degrees with the rotating shaft 11a to facilitate the processing at this angle.

The above descriptions are only preferred embodiments of the present invention, and are not intended to be used in the scope of the patents, and other equivalent changes in the patent spirit of the present invention are all within the scope of the patent.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the scope of the patents of the present invention. Other equivalent variations of the patent spirit using the present invention are all within the scope of the patent.

1, 1a‧‧‧ brake mechanism for pneumatic tool shaft

10, 10a‧‧‧Tool ontology

11, 11a‧‧‧ shaft

111‧‧‧First gear

20, 20a‧‧‧ drive module

21, 21a‧‧‧ drive components

210, 210a‧‧‧ central axis

211‧‧‧ First card department

22, 22a‧‧‧Transfer components

23‧‧‧ drive gear

24‧‧‧ bearing

30, 30a‧‧‧ brake module

31‧‧‧ button

32‧‧‧Brake components

320‧‧‧Limited holes

321‧‧‧Second Card Department

33‧‧‧ Spring

34‧‧‧ Limit pin

40‧‧‧shells

41‧‧‧Installation slot

42‧‧‧ positioning slot

FIG. 1 is a perspective perspective view of the brake mechanism of the pneumatic tool shaft of the present invention.

2 is a partial perspective perspective view of the brake mechanism of the pneumatic tool shaft of the present invention.

Figure 3 is a combined cross-sectional view of the brake mechanism of the pneumatic tool shaft of the present invention.

Fig. 4 is a perspective perspective view of the brake mechanism of the pneumatic tool shaft of the present invention.

Fig. 5 is a cross-sectional view showing the brake mechanism of the pneumatic tool shaft of the present invention in use.

Fig. 6 is a perspective perspective view showing another embodiment of the brake mechanism of the pneumatic tool shaft of the present invention.

Fig. 7 is a perspective perspective view showing another embodiment of the brake mechanism of the pneumatic tool shaft of the present invention.

Claims (12)

A brake mechanism for a pneumatic tool shaft, comprising: a tool body having a rotating shaft; a driving module comprising a driving component rotated by the rotating shaft and a switching component coupled to the driving component, the driving component Having at least a first latching portion for coupling a processing tool; and a brake module comprising a button, a braking element connecting the button, a spring resiliently pushing the button, and a limit The brake element is provided with a limiting hole and a second latching portion corresponding to the first latching portion, and the braking element is disposed in the limiting hole through the limiting pin to limit the displacement thereof, and When the button is pressed, the braking element can clamp the first latching portion and the second latching portion to prevent the driving component from rotating. The brake mechanism of the pneumatic tool shaft according to claim 1, wherein the rotating shaft has a plurality of first gears, and the driving module further comprises a driving gear, the driving gear is engaged with the first gears to drive the driving component to rotate . The brake mechanism of the pneumatic tool shaft of claim 2, wherein the drive module further comprises at least one bearing, the drive component is a drive shaft, and the at least one bearing is coupled to the drive component. A brake mechanism for a pneumatic tool shaft according to claim 3, wherein the driving member has a plurality of first latching portions spaced apart from an outer peripheral surface of the driving member. The brake mechanism of the pneumatic tool shaft according to claim 4, wherein the first latch portion is provided as a groove, and the second latch portion is disposed as a bump. A brake mechanism for a pneumatic tool shaft according to claim 1, wherein the brake element is disposed as a cylinder and is located on a side of the button facing the driving member. The brake mechanism of the pneumatic tool shaft according to claim 1, wherein the limiting hole is an elongated hole penetrating the brake element. A brake mechanism for a pneumatic tool shaft according to claim 1, further comprising a casing that covers the rotating shaft and the braking element. The brake mechanism of the pneumatic tool shaft according to claim 8, wherein the button is disposed on an outer side of the sleeve, and the sleeve is formed with a mounting groove corresponding to the setting of the button. The brake mechanism of the pneumatic tool shaft according to claim 8, wherein the sleeve has a positioning groove for receiving the spring, and one end of the spring is disposed in the positioning groove, and the other end elastically abuts the button. A brake mechanism for a pneumatic tool shaft according to claim 1, wherein the drive member has a central shaft disposed at an angle of 90 degrees to the shaft. A brake mechanism for a pneumatic tool shaft according to claim 1, wherein the drive member has a central shaft disposed at an angle of 120 degrees to the shaft.