TWI869167B - Ratchet wrench structure - Google Patents

Abstract

The present invention relates to a ratchet wrench structure, which includes: a body having a first receiving groove, a second receiving groove and a first peripheral surface; a ratchet having a ratchet part and a sleeve part; a toothing is accommodated against one side of the second receiving groove, and the front side of the toothing is provided with a plurality of engaging teeth, a first protrusion, a first surface, a second surface and a third surface; an elastic element is accommodated in the second receiving groove, and the elastic element elastically abuts against the toothing so that the engaging teeth are engaged with the ratchet part; a limiting member is provided with a fourth surface, a fifth surface and a receiving groove, and the receiving groove is closed at the top and bottom, and the receiving groove can accommodate the first protrusion and the elastic element, and the elastic element elastically abuts against the toothing and the wall surface of the receiving groove.

Description

Ratchet wrench structure

The present invention is related to a ratchet wrench structure, and in particular to a ratchet wrench structure in which a first protrusion and a receiving groove are provided between a tooth and a limiting member, that is, the tooth and the limiting member are in a mutually assembled relationship. After the tooth, the spring element and the limiting member are assembled outside the main body first, when the tooth, the spring element and the limiting member are held by hand, the tooth, the spring element and the limiting member are less likely to be separated, and the tooth, the spring element and the limiting member are more easily assembled in the second receiving groove.

As we know before, the commonly used ratchet wrench structure, such as US patent case US 8272297 B1, Taiwan patent application number: 100217195, certificate number: M423025, patent name: Improved structure of one-way ratchet wrench for easy assembly, an improved structure of one-way ratchet wrench for easy assembly, including:

A ratchet wrench body, a ratchet head position of the ratchet wrench body is provided with a through receiving hole, the receiving hole is used to assemble a ratchet, the outer peripheral surface of the ratchet is provided with a ratchet tooth surface, and the side wall of the receiving hole is provided with an inwardly concave arc groove; its characteristics are:

An arc-shaped component, which can be held in one hand and is easy to assemble and accommodate in the arc groove. The arc-shaped component includes an arc-shaped block, a spring, and a ratchet block. The ratchet block is provided with a column and several ratchets facing the ratchet wheel. The arc-shaped block is provided with a spring hole. The column and the spring hole are used to assemble and limit the spring. The arc-shaped block is integrally extended to the side of the ratchet block with an extension wing plate. The extension wing plate makes it easy to hold the ratchet block, the spring and the extension wing plate in one hand for assembly.

However, the defects of this ratchet wrench structure are:

1. Referring to FIG. 2, the arc block 21, the spring 22 and the ratchet block 23 are three sequential components. The arc block 21 and the ratchet block 23 are connected by the spring 22. The spring 22 is a soft structure. The connection between the three is a soft connection. Although the arc block 21 is provided with the extension The extension plate 211 is for the ratchet block 23 to attach, but the ratchet block 23 is attached at only one end, and the other end has no assembly relationship with the arc-shaped assembly 21. Generally, it is impossible to hold the arc-shaped assembly 21, the spring 22 and the ratchet block 23 at the same time with one hand, and the arc-shaped assembly 21 or the ratchet block 23 is easy to slip out of the hand.

2. The spring 22 is assembled between the column 231 and the spring hole 212. During assembly, the assembler needs to use both hands to align one end of the spring 22 with the spring hole 212 and align the other end of the spring 22 with the protruding column 231 and fit it. The assembly method of the ratchet wrench structure is quite inconvenient.

3. The arc-shaped component is provided with a spring hole for compatibility with one end of the spring, and the ratchet block is provided with a column for the other end of the spring. The spring hole and the column increase the processing cost of the ratchet wrench structure.

4. The arc block 21 is provided with the extension wing plate 211. The arc block 21 should be metal injection molded. The extension wing plate 211 is in the form of a thin sheet. The upper and lower molds of the arc block 21 need to match the thin sheet-shaped space to mold the extension wing plate 211. The upper and lower molds of the arc block 21 are not easy to manufacture. The extension wing plate 211 should not be easy to mold, and the cost of the upper and lower molds of the arc block 21 will be higher.

In view of the defects of the ratchet wrench structure in the above-mentioned conventional patent, the inventor, with many years of experience in the relevant industry, finally came up with a ratchet wrench structure product that can solve the conventional disadvantages.

Problems to be solved by the invention: In conventional ratchet wrench structures, it is generally impossible to hold the arc block, the spring and the ratchet block at the same time with one hand, and the arc block or the ratchet block is easy to slip out of the hand. In a ratchet wrench structure of the invention, the first protrusion and the receiving groove are provided between the tooth and the limiting member, that is, the tooth and the limiting member are in a mutually assembled relationship. After the tooth, the spring element and the limiting member are assembled outside the body first, when the hand holds the tooth, the spring element and the limiting member, the tooth, the spring element and the limiting member are less likely to be separated from each other, and the tooth, the spring element and the limiting member are easier to be assembled in the second receiving groove.

Technical means for solving the problem: The present invention relates to a ratchet wrench structure, which includes: a body provided with a first receiving groove, a second receiving groove and a first peripheral surface; a ratchet is pivotally arranged in the first receiving groove and provided with a ratchet portion and a sleeve portion; a toothing is accommodated against one side of the second receiving groove, and the front side of the toothing is provided with a plurality of engaging teeth, a first protrusion, a first surface, a second surface and a The third surface; an elastic element is accommodated in the second receiving groove, and the elastic element elastically abuts against the toothing to make the engaging tooth engage with the ratchet portion; a limiting member is provided with a fourth surface, a fifth surface, and a receiving groove, and the receiving groove is closed at the top and bottom, and the receiving groove can accommodate the first protrusion and the elastic element, and the elastic element elastically abuts against the toothing and the wall of the receiving groove.

Compared with the effect of the prior art: the first protrusion and the receiving groove are arranged between the tooth and the limiting part, that is, the tooth and the limiting part have a mutual assembly relationship. After the tooth, the spring element and the limiting part are assembled outside the main body, when the hand holds the tooth, the spring element and the limiting part, the tooth and the limiting part are less likely to be separated, and the tooth, the spring element and the limiting part are easier to be assembled in the second receiving groove. There is an assembly relationship between the tooth and the limiting part, the tooth and the elastic element also have an assembly relationship, and the elastic element and the limiting part also have an assembly relationship. The tooth, the elastic element and the limiting part all have an assembly relationship.

In order to enable the members of the Jun Bureau and those familiar with this technology to fully understand the effects of the present invention, the structure and composition of the present invention are explained below with diagrams and figure numbers. However, the following is only used to explain the implementation examples of the present invention and is not intended to limit the present invention in any form. Therefore, any modifications and changes made within the spirit of the present invention should still fall within the scope of protection of the present invention.

10: Body

11: First tank

111: Resistance

12: Second tank

121: First week

13: First buckle ring groove

20: Ratchet

21: Ratchet part

22: Fitting part

23: Second buckle ring groove

30: Teeth making

31: Occlusal teeth

32: First bump

321: First page

33: Second bump

34: Second side

35: The third side

40: Elastic element

50: Restricted items

51: The fourth side

52: Fifth page

53: Storage tank

60: Buckle

Figure 1 is a three-dimensional exploded view of the ratchet wrench structure of the present invention.

Figure 2 is a top view of the teeth of the ratchet wrench structure of the present invention.

Figure 3 is a top view of the limiting member of the ratchet wrench structure of the present invention.

Figure 4 is a three-dimensional assembly diagram of the ratchet wrench structure of the present invention.

Figure 5 is a three-dimensional assembly diagram of the teeth and the limiting member of the ratchet wrench structure of the present invention.

Figure 6 is a side view of the ratchet wrench structure of the present invention.

Figure 7 is a cross-sectional view of the ratchet wrench structure diagram 6 taken along line A-A of the present invention.

Figure 8 is a cross-sectional view of the ratchet wrench structure of the present invention at point A-A in another action.

Figure 9 is a front view of the ratchet wrench structure of the present invention.

Figure 10 is a cross-sectional view of the ratchet wrench structure diagram 9 of the present invention at point B-B.

First, please refer to Figures 1 to 5. Figure 1 is a three-dimensional exploded view of the ratchet wrench structure of the present invention, Figure 2 is an upper view of the tooth 30 of the ratchet wrench structure of the present invention, Figure 3 is an upper view of the limiter 50 of the present invention, Figure 4 is a three-dimensional assembly view of the ratchet wrench structure of the present invention, and Figure 5 is a three-dimensional assembly view of the tooth 30 and the limiter 50. The present invention is about a ratchet wrench structure, which includes:

A body 10, one end of which is provided with a first receiving groove 11, the first receiving groove 11 is in the shape of a circular groove, the bottom of the first receiving groove 11 is provided with an abutment 111, one side of the first receiving groove 11 is provided with a second receiving groove 12, the second receiving groove 12 is in communication with the first receiving groove 11, the diameter of the second receiving groove 12 is smaller than the diameter of the first receiving groove 11, the center of the second receiving groove 12 is located within the range of the first receiving groove 11, the upper and lower sides of the second receiving groove 12 are closed, the second receiving groove 12 is provided with a first peripheral surface 121, the first peripheral surface 121 is in the shape of an arc surface, the first receiving groove 11 is provided with a first buckle ring groove 13, the first buckle ring groove 13 is in the shape of a concave circular ring groove, and the first buckle ring groove 13 is located near the opening;

A ratchet 20, the ratchet 20 is pivoted in the first receiving groove 11, the ratchet 20 is located at the abutment 111, the outer periphery of the ratchet 20 is provided with a ratchet portion 21, the ratchet portion 21 is in a ring-shaped arrangement of teeth, the ratchet 20 is provided with a sleeve portion 22, the sleeve portion 22 is in a polygonal groove , the ratchet 20 is provided with a second buckle ring groove 23, the second buckle ring groove 23 is aligned with the first buckle ring groove 13;

A tooth 30 is provided, as shown in FIG. 2 , and is received against one side of the second receiving groove 12. A plurality of engaging teeth 31 are provided on the front side of the tooth 30, and the plurality of engaging teeth 31 are engaged with the ratchet portion 21. A first protrusion 32 is provided on one side of the tooth 30, and the first protrusion 32 is provided with a first surface 321, and the first surface 321 is opposite to the ratchet 21. 0, a second protrusion 33 is provided on the rear side of the first protrusion 32, and the second protrusion 33 is cylindrical. A second surface 34 and a third surface 35 are provided on the rear side of the tooth 30, and the second surface 34 is against the first peripheral surface 121, and the second surface 34 is in an arc shape, and the second surface 34 is far away from the second protrusion 33, and the third surface 35 is in an arc shape or a plane shape;

An elastic element 40, which is accommodated in the second receiving groove 12, and elastically abuts against the control tooth 30, so that the engaging tooth 31 is engaged with the ratchet part 21. Restricted by the first protrusion 32, the elastic element 40 does not escape from the second receiving groove 12. One end of the elastic element 40 is sleeved on the second protrusion 33. The elastic element 40 is a spring structure;

A limiting member 50 is an arc block. The limiting member 50 can be made of a soft material. The limiting member 50 can be slightly elastic. The limiting member 50 can be a plastic injection molding structure. The limiting member 50 has a fourth surface 51 on the front side. The fourth surface 51 is opposite to the ratchet 20. The limiting member 50 has a fifth surface 52 on the rear side. The fifth surface 52 is opposite to the first circumferential surface 1 21 abuts against each other, and a receiving groove 53 is provided on one side of the limiting member 50. The receiving groove 53 is closed at the top and bottom. The receiving groove 53 can accommodate the first protrusion 32 and the elastic element 40. The elastic element 40 elastically abuts against the tooth 30 and the wall surface of the receiving groove 53. The receiving groove 53 can also accommodate the end of the second protrusion 33. The first surface 321 does not contact the ratchet 2. 0, the first surface 321 is in a planar or arcuate shape. If the first surface 321 is in an arcuate shape, the diameter of the first surface 321 is greater than the diameter of the first receiving groove 11, or the first surface 321 and the plurality of tooth valleys of the plurality of engaging teeth 31 are connected on the same arc, the fourth surface 51 does not contact the ratchet 20, and the fourth surface 51 is in a planar or arcuate shape. If the fourth surface 51 is in an arc shape, the fourth surface 51 and the first surface 321 have the same diameter, or the inner diameter of the fourth surface 51 is larger than the inner diameter of the first surface 321; a buckle ring 60, the buckle ring 60 is in a C-shaped ring shape and slightly elastic, the buckle ring 60 is accommodated in the first buckle ring groove 13 and the second buckle ring groove 23, so that the ratchet 20 is pivoted at the first receiving groove 11.

Please continue to refer to FIG. 6, which is a side view of the ratchet wrench structure of the present invention. FIG. 7 is a cross-sectional view of FIG. 6 taken along line A-A. The ratchet 20 is pivotally disposed in the first receiving groove 11, the tooth 30 is accommodated in the second receiving groove 12, the second surface 34 is against the first peripheral surface 121, the elastic element 40 is sleeved on the second protrusion 33, and the elastic element 40 is elastically against the tooth 30 and the inner wall surface of the receiving groove 53, so that the engaging tooth 31 is engaged with the ratchet part 21, the second surface 34 and the fifth surface 52 are against the first peripheral surface 121, and the ratchet 20 is rotated by rotating the body 10 clockwise.

Please continue to refer to FIG. 8, which is a cross-sectional view of another action of the ratchet wrench structure of the present invention at A-A. When retreating, the body 10 rotates counterclockwise, the engaging tooth 31 is disengaged from the ratchet part 21, the control tooth 30 is displaced to the left rear side, the first protrusion 32 and the elastic element 40 are further displaced into the accommodating groove 53, the elastic element 40 is compressed, the engaging tooth 31 is disengaged from the ratchet part 21 and the tooth retreat state is completed. When retreating, the fourth surface 51 may contact the ratchet part 21.

Please refer to FIG. 9, which is a top view of the ratchet wrench structure of the present invention, and FIG. 10 is a cross-sectional view taken at B-B of FIG. 9. The retaining ring 60 is accommodated between the first retaining ring groove 13 and the second retaining ring groove 23, so that the ratchet 20 is pivoted in the first receiving groove 11, and the ratchet 20 does not fall out of the body 10.

In another embodiment of the present invention, the fitting portion 22 is not in the shape of a polygonal groove, but in the shape of a protruding quadrangular head, or the fitting portion 22 can be of various structures to fit another hand tool. The toothing 30 is not provided with the second protrusion 33, and the elastic element 40 is directly elastically pressed against the toothing 30. Restricted by the first protrusion 32, the elastic element 40 is unlikely to escape from the second receiving groove 12.

The ratchet wrench structure of the present invention has the following advantages:

1. As shown in FIG. 5, the first protrusion 32 and the receiving groove 53 are provided between the tooth 30 and the limiting member 50, that is, the tooth 30 and the limiting member 50 are in a mutually assembled relationship. After the tooth 30, the spring element 40 and the limiting member 50 are assembled outside the body 10, when the tooth 30, the spring element 40 and the limiting member 50 are held by hand, the tooth 30 and the limiting member 50 are not easily separated from each other, and the tooth 30, the spring element 40 and the limiting member 50 are more easily assembled in the second receiving groove 12.

2. The tooth 30 and the limiting member 50 are in an assembly relationship, the tooth 30 and the elastic element 40 are also in an assembly relationship, and the elastic element 40 and the limiting member 50 are also in an assembly relationship. Each two of the tooth 30, the elastic element 40 and the limiting member 50 are in an assembly relationship with each other, and the tooth 30, the elastic element 40 and the limiting member 50 have a better assembly structure.

3. The limiting block 50 is accommodated in the second containing groove 12. The limiting block 50 can limit the maximum retraction range of the toothing 30 when the toothing 30 is retracted. The retraction distance of the toothing 30 is small, and the toothing 30 can be more easily re-entered.

4. Restricted by the first protrusion 33, the elastic element 40 does not escape from the second receiving groove 12.

5. Please refer to the upper view of Figure 2 and Figure 3. The tooth 30 is provided with the first protrusion 32 and the second protrusion 33. One end of the elastic element 40 is sleeved on the second protrusion 33, and the other end of the elastic element 40 is pressed against the inner wall of the accommodating groove 53. The assembly method of the elastic element 40 is quite convenient.

6. The toothing 30 is provided with the first protrusion 32 and the second protrusion 33. The first protrusion 32 and the second protrusion 33 can be completed with the toothing 30 by metal injection molding without any other processing.

Therefore, the ratchet wrench structure of this invention has great industrial application value, novelty and advancement, and can truly meet the application requirements for invention patents, so an application is filed in accordance with the law.

10: Body

11: First tank

111: Resistance

12: Second tank

121: First week

13: First buckle ring groove

20: Ratchet

21: Ratchet part

22: Fitting part

23: Second buckle ring groove

30: Teeth making

31: Occlusal teeth

32: First bump

40: Elastic element

50: Restricted items

60: Buckle

Claims (8)

A ratchet wrench structure includes: a body, one end of which is provided with a first groove, the first groove is in the shape of a circular groove, one side of the first groove is provided with a second groove, the second groove is in communication with the first groove, the second groove is provided with a first peripheral surface, the first peripheral surface is in the shape of an arc surface; a ratchet, the ratchet is pivoted in the first groove, the outside of the ratchet is provided with a second peripheral surface, the first peripheral surface is in the shape of an arc surface; A ratchet part is provided on the periphery, the ratchet part is in the shape of a ring-shaped tooth arrangement, and the ratchet is provided with a sleeve engagement part; a tooth, the tooth is accommodated against one side of the second receiving groove, the front side of the tooth is provided with a plurality of bite teeth, the plurality of bite teeth are engaged with the ratchet part, and one side of the tooth is provided with a first protrusion, the first protrusion is provided with a first surface, and the first surface is opposite to the ratchet The rear side of the toothing is provided with a second surface and a third surface, the second surface is against the first peripheral surface, and the second surface is in an arc shape; an elastic element is accommodated in the second receiving groove, the elastic element is elastically against the toothing, so that the engaging tooth is engaged with the ratchet part, and is restricted by the first protrusion, and the elastic element does not escape from the second receiving groove; a limiting member The front side of the limiting member is provided with a fourth surface, which is opposite to the ratchet wheel. The rear side of the limiting member is provided with a fifth surface, which is against the first peripheral surface. One side of the limiting member is provided with a receiving groove, which is closed at the top and bottom. The receiving groove can accommodate the first protrusion and the elastic element, and the elastic element elastically abuts against the tooth and the wall of the receiving groove. The ratchet wrench structure as described in claim 1, wherein the bottom of the first groove is provided with an abutment, the diameter of the second groove is smaller than the diameter of the first groove, the center of the second groove is located within the range of the first groove, and the upper and lower sides of the second groove are closed; the ratchet is located at the abutment. The ratchet wrench structure as described in claim 1, wherein the first receiving groove is provided with a first snap ring groove, the first snap ring groove is in the shape of a concave circular ring groove, and the first snap ring groove is arranged near the opening; the ratchet is provided with a second snap ring groove, the second snap ring groove is aligned with the first snap ring groove; a snap ring is provided, the snap ring is in the shape of a C-shaped ring and is slightly elastic, the snap ring is accommodated in the first snap ring groove and the second snap ring groove, so that the ratchet is pivoted at the first receiving groove. The ratchet wrench structure as described in claim 1, wherein a second protrusion is provided at the rear side of the first protrusion, and the second protrusion is cylindrical; one end of the elastic element is sleeved on the second protrusion, and the elastic element is a spring structure; the accommodating groove is also provided for the end of the second protrusion to be accommodated. The ratchet wrench structure as described in claim 1, wherein the third surface is in the shape of an arc or a plane. The ratchet wrench structure as described in claim 1, wherein the limiting member is an arc block, the limiting member can be made of a soft material, the limiting member can be slightly elastic, and the limiting member can be a plastic injection molding structure. The ratchet wrench structure as described in claim 1, wherein the first surface does not contact the ratchet, the first surface is in a plane or arcuate shape, if the first surface is in an arcuate shape, the diameter of the first surface is greater than the diameter of the first groove, or the first surface and the plurality of tooth valleys of the plurality of meshing teeth are connected on the same arc, the fourth surface does not contact the ratchet, the fourth surface is in a plane or arcuate shape, if the fourth surface is in an arcuate shape, the fourth surface and the first surface have the same diameter, or the inner diameter of the fourth surface is greater than the inner diameter of the first surface. The ratchet wrench structure as described in claim 1, wherein the fitting portion is in the shape of a polygonal groove, or the fitting portion is in the shape of a protruding quadrangular head, or the fitting portion can be of various structures to fit another hand tool.

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