KR200203409Y1 - A wrench - Google Patents

Abstract

The present invention relates to a wrench, the present invention is coupled to the head 32 of the bolts / nuts 30 type having a cylindrical head between the inner race 22 and the outer race 24 to operate in one direction only The clutch 60 is installed, and the outer race 24 has a coupling means formed to be coupled to various tools. According to the present invention, a plurality of rollers 26 forming the one-way clutch 60 are provided on the inclined surface 24C. By being guided and rotated in only one direction to be in close contact with or spaced from the cylindrical head 32, it is possible to tighten or loosen the bolt or nut at a minimum working distance in a narrow place, and a plurality of radially installed rollers 26 By consistently adhering to the outer circumferential surface of the head 32 to transmit the force, a useful effect is provided that even if excessive force is applied from the handle, damage to the bolt or nut can be prevented.

Description

Wrench {A WRENCH}

The present invention relates to a wrench, and in particular, a one-way clutch can be installed between the inner race and the outer race to loosen or tighten the cylindrical head bolt / nut to a minimum working distance, and the tightening and releasing force of the bearing and the bolt due to the close contact of the outer circumferential surfaces thereof. This relates to a wrench that can be delivered as much as possible.

In general, bolts and nuts are fastened to each other and used for joining materials, which may be joined to each other by a tightening tool, that is, a wrench.

As a tool for tightening the bolt and nut as shown in FIG. 1, the ratchet handle 1 is configured to be coupled with a polygon wrench 2 having an inner diameter formed in a polygon to tighten or loosen the bolt 3.

In addition, the ratchet handle 1 is provided with a latch means 4 which can continuously tighten or loosen the bolt 3 without removing the polygon wrench 2 from the bolt 3.

However, in the case of tightening the bolt 3 using the ratchet handle 1 as shown in FIG. 2A, the latch 4-2 must be out of the distance t of the teeth 4-1 to continuously tighten the bolt 3. This has become possible. That is, when the bolt 3 is continuously tightened in one direction by using the ratchet handle 1 in a narrow space, the latch 4-2 should move more than the distance t of the teeth 4-1. Since the following tightening was comprised possible, there existed a problem that it was difficult to use in a narrow space.

On the other hand, as shown in Figure 2b, when an excessive force is applied when tightening or loosening the bolt (3) of the polygon by using the multi-angle wrench (2), the edge portion (3-1) of the bolt (3) Is damaged, so that the tightening or loosening of the bolt 3 is difficult.

That is, in the state where the polygonal wrench 2 is coupled to the bolt 3 and the polygonal wrench 2 and the ratchet handle 1 are coupled, the ratchet handle 1 is fastened to the ratchet handle 1. When the excessive force is applied, the corner portion 3-1 of the bolt 3 is damaged and the polygonal wrench 2 has a problem of failing. This problem is that only a part of the corner portion 3-1 of the bolt 3 is in contact with the engaging portion 2-1 of the polygonal wrench 2, and the force generated by the ratchet handle 1 concentrates on a part of the contact portion. It was caused by.

The present invention is devised to solve the problems of the prior art as described above, the technical problem of the present invention is to continuously tighten or loosen the bolt or nut at a minimum working distance in a narrow place, the force generated from the handle The constant acting on the entire outer circumferential surface of the bolt or nut to prevent damage to the bolt or nut, as well as to provide a means for improving the tightening or loosening force.

1 is an exploded perspective view showing the prior art.

Figure 2 is a view for explaining the operating state of the prior art, 2a is a schematic plan view showing the operation of the wrench, 2b is a coupled state plan view for explaining the combined state of the polygonal wrench and the bolt.

Figure 3 is an exploded perspective view showing a wrench according to the first embodiment of the present invention.

4 is a plan sectional view showing an operating state of the wrench shown in FIG.

Figure 5 is a plan sectional view showing a state in which a wrench according to the second embodiment of the present invention is used.

Figure 6 is a plan sectional view showing a state in which a wrench according to the third embodiment of the present invention is used.

Figure 7a, 7b is a state of use of the wrench according to the fourth embodiment of the present invention.

8 is a sectional view showing a wrench according to a fifth embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

22: inner race 24: out race

28C: contact surface 30: head

40: wrench 42: locking groove

44: engaging projection 51: handle portion

52: spanner 60: one-way clutch

The present invention for solving the technical problem of the present invention as described above is installed between the inner race and the outer race, the one-way clutch is coupled to the bolt / nut having a cylindrical head is operated in only one direction, the other tool It provides a wrench, characterized in that the coupling means for coupling with the formed.

When described in detail with reference to the accompanying drawings a preferred embodiment of the present invention having such features as follows.

3 is an exploded perspective view showing a wrench according to the first embodiment of the present invention, Figure 4 is a plan sectional view showing the operating state of the wrench shown in FIG. Hereinafter, reference numeral '20' is a wrench and '40' is a polygon wrench.

As shown in the accompanying drawings, the wrench 20 according to the first embodiment of the present invention is provided with a one-way clutch 60 that operates only in one direction between the inner race 22 and the outer race 24, The outer circumferential surface of the outlace 24 has a structure in which a coupling means coupled to the polygonal wrench 40 is formed.

This will be described in more detail as follows.

As shown in Figures 3 to 4, the wrench 20 is composed of an outer race 24 and the inner race 22, therein is installed a one-way clutch 60 that operates only in one direction.

This wrench 20 is configured to be used in conjunction with a bolt / nut 30 having a cylindrical head 32. That is, the cross section of the head 32 is circular.

Looking at the configuration of the one-way clutch 60 as follows. As shown, an installation groove 24A having an inclined surface 24C inclined to one side is formed in a vertical (lengthwise direction) on the inner circumferential surface of the outer race 24, and in such an installation groove 24A The rollers 26 are installed vertically, respectively, so that one side of the outer circumferential surface of each roller 26 is in close contact with the inclined surface 24C. At this time, the engaging projections 26A protrude from both ends of the rollers 26. The locking projection 26 has a function to prevent the roller 26 from being separated from the installation groove 24A.

When the rollers 26 are installed in the inner race 22 and the outer race 24 as described above, the rollers 26 are not separated from the wrench 20 by the inner race 22.

On the other hand, the resilient portion 26B of the mounting groove 24A is provided with an elastic member 26B for pressing the respective rollers 26 to the narrow portion A side, so that the rollers 26 are normally narrow portions ( A) It is located on the side.

On the other hand, the outer circumferential surface of the outer race 24 is provided with a coupling means, this coupling means is composed of insertion projections 28A, as shown in Figs. That is, the locking protrusion 28A is formed to be inserted into the locking groove 42 formed in the various wrenches 40 closed like the polygon wrench 40. This is for coupling the wrench 20 and the polygonal wrench 40.

Referring to the operation of the first embodiment of the present invention configured as described above in detail as follows.

As shown in FIG. 3, for example, the polygonal wrench 40 having a polygonal interior is coupled to the ratchet handle 51, and the wrench 20 according to the present invention is coupled to the polygonal wrench 40. Each insertion protrusion 28A formed in the outer race 24 of the wrench 20 is inserted into the locking groove 42 of the wrench 40.

In this state, the wrench 20 is coupled to the head 32 of the bolt / nut 30 having a cylindrical head. That is, the head 32 is inserted into the wrench 20.

When the head 32 is inserted into the wrench 20, the ratchet handle 50 is rotated in the direction of the arrow 71 of FIG. 4.

When the ratchet handle 50 is rotated in the direction of the arrow 71, the rollers 26 are guided to the inclined surface 24C of the installation groove 24A to move toward the narrow portion A, and thus the head portion. It is located between the outer diameter of (32) and the inclined surface (24C) on the narrow portion (A) side, and no longer rotates in the tightening direction (arrow 72 direction), the head 32 is tightened.

That is, the space | interval t1 of 24 C of inclination surfaces of the said narrow part A side, and the head part 32 is narrower than the space | interval t2 of inclination surface 24C and the head part 32 of the extension part B side. Since the roller 26 is formed as the roller 26 moves toward the narrow portion A side, the roller 26 is sandwiched between the head 32 and the inclined surface 24A, so that the outer circumferential surface of each roller 26 is In close contact with the outer circumferential surface of the head 32 is to tighten the bolt. At this time, since each roller 26 radially installed in the wrench 20 is radially in close contact with the outer circumferential surface of the head 32, the force generated from the handle 51 is the head 32 It will act uniformly on the outer peripheral surface of the.

When the ratchet handle 50 is returned in the direction of the arrow 73 in this state, the roller 26 located between the inclined surface 24C on the side of the narrow portion A and the outer diameter of the head 32 is the inclined surface ( It is guided to 24C) and is rotated in the direction of the arrow 74 and moved to the extension part B side. Thus, the head 32 is not rotated but the handle 51 can be easily returned.

That is, when each roller 26 which was moved to the inclined surface 24C of the narrow part A side and pressed the head part 32 is moved to the extension part B side, the said head part 32 is The ratchet handle 51 may be in a stopped state or rotated in the direction of the arrow 73.

In this state, when the ratchet handle 51 is rotated again in the direction of the arrow 71, the respective rollers 26 are again moved to the inclined surface 24C side of the narrow portion A side. When the roller 26 moves from the extension part B side to the narrow part A side, the head part 32 can be tightened again, and by this operation, the bolt / nut 30 is continuously It can be tightened.

In this case, the head part 32 may be tightened even if the operating distance L1 of the ratchet handle 51 is minimized. This is because the length L2 of the inclined surface 24C is smaller than the diameter of the roller 26 so that the roller 26 may be in close contact or spaced apart even if the roller 26 is slightly rotated. That is, since the inclined surface 24C is formed to have a short inclination, the roller 26 is in close contact with or spaced apart from the head 32 even when the roller 26 is only 1/3 rotated.

Therefore, the working distance L1 of the ratchet handle 51 can be minimized, thereby allowing the bolt / nut 30 to be tightened or loosened even in a narrow place.

In this case, the working distance L1 may be changed according to the size of the roller 26 or the inclination angle of the inclined surface 24C.

On the other hand, when the head 32 is tightened in the direction of the arrow 71 by the operation as described above, in order to loosen it in the direction of the arrow 74, the wrench 20 is separated from the head 32, and then reversed and recombined. Let's do it. That is, after the first insertion portion of the inside of the multi-angle wrench 40 is coupled to face the head portion 32, by operating the ratchet handle 51 as described above to loosen the bolt / nut 30 Serve

As such, the process of loosening the bolts / nuts 30 is the same as the above-described operation process, and the loosening of the bolts / nuts 30 may be continuously performed by such an operation.

On the other hand, the wrench 20 according to the second embodiment of the present invention, as shown in Figure 5, the insertion groove 28B in the longitudinal direction of the outer peripheral surface of the outer race 24 is coupled to the polygonal wrench 40 Has a formed structure.

That is, the locking protrusion 44 of the wrench 40 is inserted into the insertion groove 28B of the outlace 24.

In addition, the wrench 20 according to the third embodiment of the present invention has a structure in which the outer circumferential surface of the outer race 24 has a polygonal contact surface 28C as shown in FIG. 6. This contact surface 28C is formed such that the inner surface 52A of the opened tool such as the spanner 52 is engaged.

The wrench 20 in which the polygonal contact surface 28C is formed as described above can be used not only in the closed wrench 40 but also in an open tool such as the spanner 52.

On the other hand, the wrench 20 according to the fourth embodiment of the present invention, as shown in Figure 7a, 7b, the connection portion 51 is formed integrally to the outlace 24. As the connection portion 51 is formed in the wrench 20 in this way, the use of the wrench 20 can be made easier. That is, the wrench 20 may be operated by attaching the connector 51, and a separate handle may be connected to the connector 51 to be used.

In addition, as shown in FIG. 8, when the handle part 53 is detachably installed on the outlace 24, a plurality of wrenches 20 having different dimensions are applied to one handle part 53. It becomes usable.

That is, a protrusion is formed on the outer circumferential surface of the outlace 24, the fitting groove 24E is formed, the fitting groove 24E is formed with a locking groove 24D, the handle portion 53 The fitting end 53A inserted into the fitting groove 24E is formed at an end thereof, and the fitting end 53A has a structure in which a ball stopper 53B is installed / locked in the locking groove 24D. will be.

As such, the outer race 24 has a fitting groove 24E, and the handle portion 53 is detachably coupled to the handle portion 53 having the ball stopper 53B, and thus, according to the present invention. Storage of the wrench 20 is easy to use.

Wrench according to the present invention is a plurality of rollers constituting the one-way clutch is guided to the inclined surface to rotate only in one direction to be in close contact or spaced in the cylindrical head, tightening or loosening the bolt or nut continuously in a narrow place with a minimum working distance A plurality of radially installed rollers are in constant contact with the outer circumferential surface of the head of the bolt to transmit force, thereby improving the tightening and releasing force of the handle, and damage to the bolt or nut even if excessive force is applied from the handle. Useful effects are provided that can be prevented.

Claims (6)

Between the inner race 22 and the outer race 24 is provided with a one-way clutch 60 coupled to the bolt / nut 30 having a cylindrical head 32 to operate in only one direction, Wrench characterized in that the outer race 24 is formed with a coupling means for coupling with other tools. The wrench as claimed in claim 1, wherein the coupling means is an insertion protrusion (28A) caught in the locking groove (42) of the polygon wrench (40). The wrench as claimed in claim 1, wherein the coupling means is an insertion groove (28B) into which the engaging projection (44) of the polygon wrench (40) is inserted. 2. The wrench as claimed in claim 1, wherein said engaging means comprises a plurality of contact surfaces (28C) so as to contact each inner surface of the spanner (52). The wrench as claimed in claim 1, wherein the coupling means comprises a connecting portion (51) integrally formed on an outer circumferential surface of the outlace (24). The method of claim 1, wherein the coupling means includes a fitting groove (24E) formed with a locking groove (24D) on the outer peripheral surface of the outlace (24); A handle portion 53 having a fitting end 53A inserted into the fitting groove 24E is formed at an end portion thereof, and a ball stopper 53B having a locking / release of the locking groove 24D is installed at the fitting end 53A. ); Wrench characterized in that consisting of.