TW201505773A - Ratchet wrench - Google Patents

Abstract

A ratchet wrench is provided, including: a body, including a receiving slot and a first anti-dust portion circumferentially disposed outside the receiving slot; a ratchet head, rotatably disposed in the receiving slot; a cover body, covered on the body and above the ratchet head, and including a second anti-dust portion corresponding to the first anti-dust portion in structure; wherein one of the first and second anti-dust portions includes a first radial incline and the other one includes a second radial incline, and the first radial incline and the second radial incline are disposed face to face and close to each other. Another ratchet wrench is also provided, including: a body, including a receiving slot and a third anti-dust portion circumferentially disposed outside the receiving slot; a ratchet head, rotatably disposed in the receiving slot, including a fourth anti-dust portion corresponding to the third anti-dust portion in shape; wherein one of the third and fourth anti-dust portion includes a third radial incline and the other one includes a fourth radial incline, and the third radial incline and the fourth incline are disposed face to face and close to each other.

Description

Ratchet wrench

The invention relates to wrenches, and in particular to a ratchet wrench.

Generally, the ratchet wrench is used, for example, by using a cover plate and covering the upper portion of the ratchet member. The cover plate is mainly used for positioning parts such as a ratchet member and preventing the component group inside the wrench from falling out, but there is no dustproof. For example, as disclosed in TWM449061, the cover is placed at the position of the ratchet groove, and the cover is provided with a tool hole. It can be understood that the cover is used for the purpose of assembly and smooth rotation. The ratchet groove has a certain degree of assembly clearance, but it is very easy to cause dust particles to enter the inside of the wrench through the assembly gap, which affects the normal operation of the internal mechanism of the wrench, and even causes the mechanism to be stuck or the component is damaged. The factor is one of the biggest concerns in the manufacturing process, which can lead to production loss and cost loss.

The present invention is directed to this problem, and discusses how to improve the dustproof protection effect of the wrench by improving the structure of the wrench and the like.

Therefore, it is necessary to provide a novel and progressive ratchet wrench to solve the above problems.

The main object of the present invention is to provide a ratchet wrench which can achieve the function of dustproofing by mutually adhering through two radial inclined surfaces, and the cross section of the radial inclined surface relative to the receiving groove The design with the angle of inclination can further prevent foreign matter from entering the wrench, and the protection design of the barb can be completely prevented from dust to achieve the effect of protecting the internal mechanism of the wrench.

In order to achieve the above object, the present invention provides a ratchet wrench, comprising: a body comprising a receiving groove and a first dustproof portion disposed outside the receiving groove; a ratchet head pivotally disposed on the body a cover, disposed on the body and located on the ratchet head, having a second dustproof portion corresponding to the first dustproof portion; wherein one of the first and second dustproof portions includes a The first radial ramp, the other includes a second radial ramp, the second radial ramp being disposed adjacent to the first radial ramp.

In order to achieve the above object, the present invention further includes a ratchet wrench, comprising: a body comprising a receiving slot and a third dustproof portion disposed outside the receiving slot; a ratchet head pivotally disposed on the a fourth dustproof portion having a shape corresponding to the third dustproof portion; wherein one of the third and fourth dustproof portions includes a third radial slope and the other includes a fourth diameter To the inclined surface, the fourth radial inclined surface is adjacent to the third radial inclined surface.

10‧‧‧ Ontology

10a‧‧‧ Ontology

11‧‧‧ 容容

12‧‧‧First Dust Department

12a‧‧‧First dustproof part

13‧‧‧ Ratchet

20‧‧‧ ratchet head

20a‧‧‧ ratchet head

30‧‧‧ Cover

31‧‧‧Second dustproof part

31a‧‧‧Second dustproof part

40‧‧‧ teeth parts

41‧‧‧Toothing

50‧‧‧Flexible parts

51‧‧‧Bump

60‧‧‧First radial bevel

60a‧‧‧First radial bevel

61‧‧‧Second radial bevel

61a‧‧‧second radial bevel

70‧‧‧Back hook

71‧‧‧First groove

72‧‧‧ hook

80‧‧‧ Third dustproof part

80a‧‧‧ Third dustproof part

81‧‧‧The fourth dustproof part

81a‧‧‧4th dustproof part

90‧‧‧ Third radial bevel

90a‧‧‧3rd radial bevel

91‧‧‧fourth radial bevel

91a‧‧‧4th radial bevel

100‧‧‧Back hook

101‧‧‧second groove

102‧‧‧ hook

1 is a schematic view of a first preferred embodiment of the present invention.

Figure 2 is an exploded view of the first preferred embodiment of the present invention.

Figure 3 is a cross-sectional view showing a first preferred embodiment of the present invention.

Figure 4 is a cross-sectional view showing a second embodiment of the present invention.

Figure 5 is a cross-sectional view showing a third embodiment of the present invention.

Figure 6 is a cross-sectional view showing a fourth embodiment of the present invention.

The following is a description of the possible embodiments of the present invention, and is not intended to limit the scope of the invention as claimed.

Referring to FIGS. 1 through 3, there is shown a first preferred embodiment of the present invention. A ratchet wrench of the present invention includes a body 10, a ratchet head 20 and a cover 30.

The main body 10 includes a receiving groove 11 and a first dustproof portion 12 disposed outside the receiving groove 11. Further, the body 10, the receiving groove 11 and the first dustproof portion 12 can be made of steel metal, for example. The metal material such as the aluminum alloy is integrally formed by a process such as hot-melt die-casting or forging. The first dust-proof portion 12 is preferably disposed adjacent to the periphery of the cavity 11, for example, the first dust-proof portion 12 For example, the peripheral wall of the housing 11 is annularly disposed with a ratchet portion 13 including a plurality of teeth, the ratchet portion. The 13 series can be molded by processes such as die casting, forging or chip cutting.

The ratchet head 20 is pivotally disposed in the housing 11. In the embodiment, the ratchet head 20 is provided with a toothing member 40 selectively engageable with the ratchet portion 13, and more specifically, The toothing member 40 includes a toothing portion 41 for interengaging with the ratchet portion 13. The toothing portion 41 includes a plurality of convex teeth, and the toothing member 40 is preferably made of carbon steel. The toothed member 40 is made to have good wear resistance and high strength material rigidity.

The toothing member 40 can limit the rotation direction of the ratchet head 20. For example, the toothing member 40 can controlably engage the ratchet head 20 with the ratchet head 20 through a positioning mechanism. Further, in the embodiment, the positioning mechanism includes an elastic member 50 and a protruding post 51 through which the elastic member 50 is disposed. The elastic member 50 is assembled to the tooth forming member 40, and the protruding member is assembled. For example, the cover 30 can be connected to the cover 30 by rotating the cover 30 and the protrusion 51. The protrusion 51 abuts against one end of the elastic member 50 and generates a pulling force on the elastic member 50. 40 is positioned to a predetermined position by the interlocking of the elastic member 50 and engaged with the ratchet portion 13 , and the ratchet head 20 is engaged with the ratchet portion 13 through the tooth forming member 40 to achieve the braking effect, thereby limiting the The direction of rotation of the ratchet head 20.

The cover 30 is disposed on the body 10 and is located on the ratchet head 20. The cover 30 has a second dustproof portion 31 corresponding to the first dustproof portion 12, and the first and second dustproof portions are provided. One of the portions 12, 31 includes a first radial bevel 60 and the other includes a second radial bevel 61 that is disposed adjacent to the first radial bevel 60. Furthermore, the first radial inclined surface 60 can extend from the outer annular surface of the body 10 to the inner annular surface of the body 10, and the first radial inclined surface 60 is, for example, a transverse section with respect to the receiving slot 11. An annular surface having a tilt angle (preferably an inclination angle of 8 degrees to 12 degrees), the second radial slope 61 having a shape corresponding to the first radial slope 60 to make the first dustproof When the second dustproof portion 31 and the second dustproof portion 31 are disposed with each other, the first and second radial slopes 60, 61 are adhered to each other to achieve dustproof effect. Preferably, the first and second radial directions are used. The gap between the inclined faces 60, 61 may be set to, for example, 0.1 mm, and the first and second radial bevels 60, 61 may be processed by, for example, a polishing process. The fit is better, so that the cover 30 and the body 10 can be smoothly operated (for example, the cover 30 can be rotated relative to the body 10), and general foreign objects (such as dust) can be prevented from entering the ratchet wrench. In the body 10, it is worth mentioning that the inclination angles of the first and second radial slopes 60, 61 with respect to the transverse plane of the pocket 11 further prevent the particulate matter from directly entering the wrench. Inside, and the angle of inclination of 8 degrees to 12 degrees can produce the best dustproof effect, and substantially further improve the dustproof effect.

In the second embodiment shown in FIG. 4, one of the first and second dustproof portions 12a, 31a may be annularly convexly provided with a barb portion 70, and the other may be provided with a first groove 71. , In this embodiment, the undercut portion 70 can be disposed, for example, in the first dustproof portion 12a. The first recess 71 can be disposed, for example, in the second dustproof portion 31a. However, in other possible embodiments, the inverted hook The portion 70 can also be disposed in the second dustproof portion 31a. The first recessed portion 71 can also be disposed in the first dustproof portion 12a. The inverted hook portion 70 is embedded in the first recess 71, and the inverted portion 70 is inverted. One of the hooks 70 of the hook portion 70 is radially outward. In other possible embodiments, the hook 72 may also face the top of the first recess 71 as shown in FIG. 4, preferably, the inverted The hook portion 70 can further prevent fluid (for example, oil, water, etc.) or finer dust from entering the wrench, and the radially outwardly facing hook 72 can further block the first and the first The gap between the two radial inclined surfaces 60a, 61a enters the dust to achieve better dustproof protection.

Referring to FIG. 5, a third embodiment of the ratchet wrench of the present invention is described below. A ratchet wrench includes a body 10a and a ratchet head 20a. The main body 10a includes a receiving groove and a third dustproof portion 80 disposed outside the receiving groove. The third dustproof portion 80 can be looped along the end of the receiving groove, for example, and the peripheral wall ring in the receiving groove A ratchet is provided. The ratchet head 20a is pivotally disposed in the pocket, and the ratchet head 20a has a fourth dustproof portion 81 having a shape corresponding to the third dustproof portion 80. Further, the fourth dustproof portion 81 is integrally formed with the ratchet head 20a. One of the third and fourth dustproof portions 80, 81 includes a third radial slope 90, and the other includes a fourth radial slope 91, and the third radial slope 90 can be, for example, external to the body 10a. The annular surface extends to the inner annular surface of the body 10a, and the fourth radial inclined surface 91 is adjacent to the third radial inclined surface 90. The third radial inclined surface 90 is, for example, transverse to the receiving groove. The cut mask has a torus angle (preferably an inclination angle of 8 degrees to 12 degrees), and the fourth radial slope 91 has a shape corresponding to the third radial slope 90 so that the third The dustproof portion 80 and the fourth dustproof portion 81 are permeable to each other through the third and fourth radial slopes 90, 91 The effect of dustproofing is achieved, and the inclined angles of the third and fourth radial slopes 90, 91 with respect to the transverse plane of the pocket can further provide dustproof effect, and 8 to 12 degrees The tilt angle produces the best dust protection. The ratchet head 20a is provided with a toothing member selectively engageable with the ratchet portion, the toothing member can limit the rotation direction of the ratchet head 20a, and the toothing member can be operated in the same manner as the above embodiment. Therefore, no description will be made.

In a fourth embodiment as shown in FIG. 6, one of the third and fourth dustproof portions 80a, 81a may be annularly convexly provided with a barb portion 100, and the other may be provided with a second groove 101. In this embodiment, the undercut portion 100 can be disposed, for example, in the fourth dustproof portion 81a. The second recess 101 can be disposed, for example, in the third dustproof portion 80a. However, in other possible embodiments, the inverted portion 100 The hook portion 100 may be disposed in the third dustproof portion 80a. The second recess portion 101 may be disposed in the fourth dustproof portion 81a. The hook portion 100 is embedded in the second recess 101, and the hook portion 100 is disposed in the second recess portion 101. One of the hooks 102 of the hook portion 100 is radially outward. In other possible embodiments, the hook 102 may also face the top of the second groove 101 as shown in FIG. 6, which is radially outward. The hook 102 can further block the dust entering through the gap between the third and fourth radial slopes 90a, 91a to achieve better dust protection.

In summary, the ratchet wrench of the present invention can achieve the function of dustproofing by mutually adhering the two radial inclined surfaces, and the radial inclined surface has an inclined angle with respect to the transverse section of the receiving groove to further prevent foreign matter from entering. Inside the wrench, and through the protective design of the barb, the dust can be completely eliminated to achieve the effect of the internal mechanism of the protection wrench.

In summary, the overall structural design, practicability and efficiency of the present invention are indeed fully in line with the needs of industrial development, and the disclosed structural invention is also an unprecedented innovative structure, so it has "novelty" should Undoubtedly, the invention can be more structured than the conventional structure. The improvement of efficacy is therefore also "progressive". It fully complies with the requirements of the application requirements for invention patents in China's Patent Law. It is a patent application in accordance with the law, and it is requested that the bureau review it early and give it affirmation.

10‧‧‧ Ontology

12‧‧‧First Dust Department

20‧‧‧ ratchet head

30‧‧‧ Cover

31‧‧‧Second dustproof part

60‧‧‧First radial bevel

61‧‧‧Second radial bevel

Claims (10)

A ratchet wrench includes: a body comprising a receiving groove and a first dustproof portion disposed outside the receiving groove; a ratchet head pivotally disposed in the receiving groove; a cover and a cover And a second dustproof portion corresponding to the first dustproof portion; wherein one of the first and second dustproof portions includes a first radial slope, and the other A second radial bevel is included, the second radial bevel being disposed adjacent to the first radial bevel. The ratchet wrench of claim 1, wherein the first radial ramp extends from the outer annulus of the body to the inner annulus of the body. The ratchet wrench of claim 1, wherein one of the first and second dustproof portions is annularly provided with a barb portion, and the other ring is provided with a first groove, and the barb portion is embedded. In the first groove. The ratchet wrench of claim 3, wherein one of the hook portions is radially outward. The ratchet wrench of claim 1, wherein the peripheral wall ring in the housing is provided with a ratchet portion, the ratchet head is provided with a toothing member selectively engageable with the ratchet portion, and the toothed member is limited The direction of rotation of the ratchet head. A ratchet wrench includes: a body comprising a receiving groove and a third dustproof portion disposed outside the receiving groove; a ratchet head pivotally disposed in the receiving groove, having a shape and the a third dustproof portion corresponding to the fourth dustproof portion; wherein one of the third and fourth dustproof portions includes a third radial slope, and the other includes a fourth radial inclined surface adjacent to the third radial inclined surface. The ratchet wrench of claim 6, wherein the third radial ramp extends from the outer annulus of the body to the inner annulus of the body. The ratchet wrench of claim 6, wherein one of the third and fourth dustproof portions is annularly convexly provided with a barb portion, and the other ring is provided with a second groove, and the barb portion is embedded In the second groove. The ratchet wrench of claim 8, wherein one of the hook portions is radially outward. The ratchet wrench of claim 6, wherein the peripheral wall ring in the housing is provided with a ratchet portion, the ratchet head is provided with a toothing member selectively engageable with the ratchet portion, and the toothed member is limited The direction of rotation of the ratchet head.