JP3077795U - wrench - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a wrench that improves assembly efficiency without popping out during assembly. SOLUTION: A housing groove 2 for housing a ratchet mechanism in a main body 1 is provided to be inclined with respect to a ratchet groove 11. The opening of the accommodation groove 2 is provided facing the ratchet groove 11. Detent 14 installed in accommodation groove 2
A concave portion 142 is provided on one surface not in contact with the teeth 141 of the
The spring 15 is provided between the recess 142 and the housing groove 2. The length of the opening of the housing groove 2 is formed smaller than the length of the diagonal line of the detent 14. Since the surface of the detent 14 which is in contact with the rib 142 is supported by the side wall of the housing groove 2, it is pushed by a spring and meshes with the teeth of the ratchet 13, but is not ejected from the housing groove 2. In addition, since the housing groove can be independently designed and assembled in the shape of the box, the working efficiency is improved.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a wrench.

[0002]

[Prior art]

 FIGS. 9 and 10 show the structure of a conventional wrench. Both the main body 8 and the main body 9 of the wrench are provided with a ratchet groove 81 and a ratchet groove 91 for assembling a ratchet. The body communicates with the ratchet groove and is provided with an accommodation groove for accommodating the detent. A spring is provided between the detent and the inner wall of the accommodation groove to hold the detent and engage with the ratchet. The length L of the opening of the receiving groove is longer than the length of the detents 82 and 92 on the side approaching the ratchet, and the detents are pushed out by the elastic force of the spring during assembly. When assembling, use a tool to hold down the detent, compress the spring, hold the detent in the accommodation groove, and insert it.

[0003]

[Problems to be solved by the invention]

 However, since the opening of the receiving groove is located in the ratchet groove, the tool for holding the detent must be inserted from the ratchet groove. At the same time, it is necessary to insert the ratchet into the ratchet groove. These assembly works are very inconvenient. The detent is springed out and needs to be assembled again. Therefore, a main object of the present invention is to provide a wrench that improves assembly efficiency without popping out during assembly.

[0004]

[Means for Solving the Problems]

 In order to solve the above-mentioned problem, in the wrench described in the claims of the present invention, the length of the opening of the receiving groove is smaller than the length of the detent close to the teeth of the detent, and the width is larger than the thickness of the detent. After it is formed and the detent is inserted into the accommodation groove, it is blocked by the inner wall of the accommodation groove. At the time of assembly, the elastic parts are not pushed out by holding down, and the effect of increasing the assembly efficiency can be achieved.

[0005] The main body of the wrench has a ratchet groove, in which a fixed component and a ratchet are installed. One housing groove is provided in the main body, and the opening of the housing groove is provided in the ratchet groove. A detent is movably housed in the internal space. The detent teeth protrude from the opening and are engaged with the ratchet. One elastic component is provided on the inner edge surface of the detent and the receiving groove to hold the detent. The length of the opening of the receiving groove is shorter than the length of the diagonal line of the detent, and the area of the opening is formed larger than the area of the corresponding detent teeth.

[0006]

[Embodiment of the invention]

 As shown in FIGS. 1 and 2, the wrench according to the first embodiment of the present invention is provided with a ratchet groove 11 inside a main body 1, and has a fixed part 12 and a ratchet 13 installed therein. In the main body 1, there is a housing groove 2 having a substantially rectangular shape, and the opening of the housing groove 2 passes through the ratchet groove 11, and a detent 14 is movably housed in the internal space. The teeth 141 of the detent 14 project from the opening 25 and engage with the teeth of the ratchet 13. The accommodation groove 2 intersects the ratchet 11 at an angle. Of the first, second, third, and fourth side walls 21, 22, 23, and 24 of the accommodation groove 2, the first and second side walls 21, 22 intersect with the ratchet 11, and the opening of the accommodation groove 2 is provided therebetween. Is formed. The two sides on which the detent 14 approaches the teeth 141 are separately supported by first and second side walls 21, 22. The two side surfaces on which the detent 14 is far away from the teeth 141 are opposed to the third and fourth side walls 23, 24 which are away from the opening of the accommodation groove 2, respectively. The detent 14 is slidable on the fourth side wall 24 of the accommodation groove 2. The detent 14 in the present embodiment slides while being supported by the second and fourth side walls 22 and 24 of the accommodation groove 2. A recess 142 is provided at the end of the detent 14 facing the third side wall 23 in this embodiment, and the spring 15 is provided between the recess 142 and the third side wall 23 of the accommodation groove 2. The detent 14 is pressed by the spring 15 and is engaged with the ratchet 13.

As shown in FIG. 3, when assembling the first embodiment of the present invention, first, the spring 15 is placed in the receiving groove 2. The place where the third side wall 23 and the fourth side wall 24 of the accommodation groove 2 of the accommodation groove 2 that intersects with the ratchet groove 11 at an angle is the lowest part of the accommodation groove 2, and when the spring 15 is inserted, it naturally goes here. Be depressed. The recess 142 of the detent 14 is inserted into the accommodation groove 2 with the surface facing downward. The detent 14 is supported by the third side wall 23 and the fourth side wall of the accommodation groove 2, and the detent 14 is inserted into the accommodation groove 2 by compressing the spring 15.

As shown in FIG. 4, when the detent 14 is inserted into the accommodation groove 2, the surface having the concave portion 142 is pressed by the spring, and the other three surfaces are respectively fitted to the accommodation groove 2. The first, second, and fourth side walls 21, 22, 24 support it. Further, since the length L of the opening of the accommodation groove 2 is smaller than the diagonal length 1 of the detent 14, the detent 14 is blocked by the first and second side walls 21 and 22 of the accommodation groove 2 and Cannot escape from groove 2. When assembling the ratchet 13, it is not necessary to press the detent 14 with a conventional tool, the ratchet 13 can be easily inserted into the ratchet groove 11, and only the fixing part 12 needs to be fixed. Further, since the detent 14 is pressed by the spring 15, the teeth 141 protrude from the opening of the receiving groove 2 and mesh with the ratchet 13.

In addition to the above, the length L of the opening of the receiving groove 2 according to the first embodiment of the present invention is shorter than the length 1 of the diagonal line of the detent 14, and the area of the detent 14 is Is formed to be larger than the area of. For this reason, after the detent 14 is inserted into the accommodation groove 2, it is blocked by the first and second side walls 21, 22 of the accommodation groove 2, and is not pressed out by the spring 15, so that the ratchet 13 is not pushed out. The assembly efficiency can be improved.

As shown in FIGS. 5 and 6, in the structure according to the second embodiment of the present invention, the detent 34 and the spring 35 are installed in the receiving groove 41 of the box 4. The main body 3 is provided with a groove 36 for accommodating the box 4 corresponding to the shape of the box 4. After the box 4 is inserted into the groove 36, the teeth 341 of the detent 34 are securely engaged with the ratchet 33. The box 4 can also be fixed in the groove 36 by the fixing parts 32 and 321 for fixing the ratchet 33. The above-described structure can achieve the same effect as that of the first embodiment. Further, since the detent 34 and the spring 35 are installed in the box 4 by the independent design of the box 4, an independent ratchet structure is provided. Form. By manufacturing the ratchet structure in large quantities in advance, this ratchet structure can be assembled into the body 3 of a different type of wrench. The division of labor can improve assembly efficiency by improving the assembly method of the production process.

As shown in FIG. 7, the structure of the main body according to the third embodiment of the present invention is configured by laying a block 6 between an upper plate 51 and a lower plate 52. The tip of the laying block 6 is formed in a slightly arc shape corresponding to the shape of the ratchet 53. An accommodation groove 61 is provided, the detent 54 and the spring 55 are accommodated, and the detent 54 and the ratchet 53 are engaged. This structure can achieve the same effect as the above-described first embodiment, and also, as in the second embodiment, assembles the detent block 54 and the spring 55 in advance in the laying block 6 to form one independent unit. Form a ratchet structure. By improving the assembly method of the production process, the effect of increasing the assembly efficiency can be achieved.

As shown in FIG. 8, one annular plate 71 is provided extending from the bottom side of the main body 7, and a ratchet 73 is installed. The tip of the main body 7 is formed in an arc shape to correspond to the shape of the ratchet 73. An accommodation groove 76 is provided, the detent 74 and the spring 75 are accommodated, and the detent 74 and the ratchet 73 are engaged. The top surface of the main body 7 is connected to the upper plate 77 by a fixing component 72 to fix each component. As a result, this embodiment can achieve the same effects as those of the first embodiment.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a wrench according to a first embodiment of the present invention;

FIG. 2 is an assembled sectional view showing the wrench according to the first embodiment of the present invention;

FIG. 3 is a view showing an operation of assembling the detent of the wrench according to the first embodiment of the present invention;

FIG. 4 is a second view illustrating the operation of assembling the detent of the wrench according to the first embodiment of the present invention;

FIG. 5 is an exploded view showing a wrench according to a second embodiment of the present invention;

FIG. 6 is a sectional view illustrating a wrench according to a second embodiment of the present invention;

FIG. 7 is an exploded perspective view showing a wrench according to a third embodiment of the present invention;

FIG. 8 is an exploded view showing a wrench according to a fourth embodiment of the present invention;

FIG. 9 is a view showing a conventional wrench.

FIG. 10 is a view showing a conventional wrench.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body 2 Housing groove 11 Ratchet groove 12 Fixed part 13 Ratchet 14 Detent stop 15 Spring 141 Teeth 142 Depression

Claims (5)

[Utility model registration claims] 1. A ratchet fixed to a main body having a ratchet groove by a fixing component is provided, and a ratchet mechanism having a detent and an elastic component for pressing the detent is provided in the main body, and an opening is provided in the main body. The ratchet mechanism is accommodated in the internal space of the accommodation groove provided in the ratchet groove, and the detent teeth of the ratchet mechanism project from the opening and mesh with the ratchet, and the length of the opening of the accommodation groove is Is a wrench, wherein the wrench is formed to be shorter than the length of the diagonal line of the detent and to have an area larger than the surface of the teeth of the detent. 2. The receiving groove is formed in a substantially rectangular shape and is provided so as to intersect with the ratchet groove at an angle, and the receiving groove intersects with the ratchet groove on two of the four side walls of the receiving groove. The wrench according to claim 1, wherein the opening of the groove is formed, and two side walls contacting the detent teeth are respectively supported by two side walls contacting the opening of the corresponding receiving groove. 3. The two side walls that do not contact the detent teeth correspond to the two side walls that do not contact the opening in the receiving groove, respectively, and one of the side surfaces of the detent stops corresponds to the corresponding receiving groove. And a space between the side wall and the side wall of the housing groove, wherein the other side of the detent slides on the corresponding side wall of the housing groove. The wrench described. 4. A concave portion is formed on one of the side surfaces not in contact with the detent teeth, and the elastic component is accommodated between the concave portion and a corresponding side surface of the accommodation groove. The wrench according to claim 1. 5. The ratchet mechanism is formed of a box, the box is provided with the receiving groove for installing the detent and the elastic component, and the main body corresponds to the shape of the box. An accommodation groove for accommodating the box body is provided, and the teeth of the ratchet mechanism can be reliably engaged with the ratchet, and the box body is also included in the accommodation groove by the fixing component for fixing the ratchet. The wrench according to claim 1, wherein the wrench can be fixed to the wrench.