CN203109854U - Anti-slip open-end wrench - Google Patents

Abstract

An anti-slip open end wrench comprises a wrench, at least one end of the wrench is provided with a jaw opening formed by a first jaw part and a second jaw part which correspond to each other, a first clamping part and a second clamping part are arranged on the inner side of the first jaw part, and a third clamping part, a fourth clamping part and a first concave part arranged at the tip of the second jaw part are arranged on the inner side of the second jaw part; wherein the two symmetrical inner sides of the first jaw part and the second jaw part are respectively provided with a first groove and a second groove, and a third groove is arranged between the second clamping part and the fourth clamping part. When the spanner rotates the work object clockwise, make second card system portion and fourth card system portion be close to paste and touch to two adjacent sides of work object, first card system portion and third card system portion can contradict the maximum two relative position departments of staggering of work object side respectively simultaneously, when implementing the operation of rotating, can effectively increase its rotational torque and the couple effect of contact point, have the locking action of effectively preventing the slippage.

Description

Anti-slip open-end wrench

technical field

The utility model relates to an open-end wrench, in particular to an open-end wrench with an anti-slip design.

Background technique

A common open-end wrench is provided with an open jaw at one end or two opposite ends, so that the jaw can be used to rotate bolts and nuts (Bolt & Nut) and various similar fixed fasteners. And according to the size specifications of the working objects, wrenches with jaws of different sizes are made respectively, and the wrenches include but are not limited to single-opened wrenches, double-opened wrenches, ring wrenches, adjustable wrenches, pipe wrench wrenches, composite wrenches and other types.

The applicant developed and applied for the patent case of Chinese Taiwan Patent Certificate No. M414298 (Structure Improvement of Open-end Wrench), which includes a wrench, and has a first jaw and a second jaw corresponding to each other at the mouth of the jaw. part, a first clamping part and a second clamping part are provided on the side of the first jaw, and a third clamping part and a fourth clamping part are provided on the side of the second jaw, but the common wrench When the force is applied to the locking bolt, the structure does not fully contact the four adjacent sides of the bolt, resulting in stress dispersion, and it is also easy to get stuck on the second clamping part due to the wear and tear of the bolt and then damage the diagonal corner of the bolt. There is a need for further improvement.

In view of this, the applicant has actively researched and improved it based on his many years of practical experience in manufacturing and designing hand tools, and finally completed the utility model after making and testing multiple physical samples.

Utility model content

The utility model provides an anti-slip open end wrench. The main problem to be solved is to develop and improve the stress dispersion problem of the existing wrench, thereby greatly improving the work efficiency, and can effectively increase the number of wrenches. Structural strength and torque performance, and achieve the effect of anti-slip and anti-off.

The utility model anti-slip open-end wrench includes a wrench, at least one end of which has a jaw opening formed by a first jaw corresponding to each other and a second jaw, and is arranged inside the first jaw. There is a first clamping part and a second clamping part is provided at the bottom end thereof, and a third clamping part, a fourth clamping part and a tip located at the tip of the second jaw are arranged inside the second jaw. The first concave part; wherein, the above-mentioned clamping parts are all at an asymmetrical angle to each other, so that each clamping part is respectively against the four adjacent side surfaces of a clamped work object, and is used to clamp the work object correspondingly side.

Preferably, a concave second recess is provided inside the first jaw.

Preferably, the symmetrical insides of the first jaw and the second jaw are respectively provided with a first groove and a second groove for avoiding the corner of the working object, and the second clamping portion and the fourth locking portion A third groove for evading the end corner of the working object is provided between the clamping parts.

Preferably, the included angle between the third clamping portion and the fourth clamping portion is ≧120°.

Preferably, the second clamping portion is in a convex arc shape.

Preferably, the second clamping portion is in a sawtooth shape.

Preferably, the second clamping portion is wave-shaped.

Preferably, the second clamping portion is in the shape of an embossed plane.

Preferably, the fourth clamping portion is in a convex arc shape.

Preferably, the fourth clamping portion is in a sawtooth shape.

Compared with the prior art, the utility model's anti-slip open-end wrench has the following beneficial effects:

1. The anti-slip open-end wrench of the present invention can make each clamping part lean against the side of the work object to prevent the work object from slipping when applying force, and at the same time increase the contact area to evacuate the stress and increase the torque;

2. Since the first jaw and the second jaw are symmetrically provided with a first groove and a second groove for avoiding the end corner of the working object respectively, and the second clamping part and the fourth clamping part A third groove for dodging the working object is provided between the clamping parts. When the wrench is turned clockwise to operate the working object, the second clamping part and the fourth clamping part are urged to be close to the contact To the side of the work object, at the same time, the first clamping part and the third clamping part can respectively touch the positions of the two opposite surfaces at the maximum staggered position on the side of the work object, so that when the turning operation is performed, its rotation torque and The force couple action of the contact point has a locking effect that makes the operation more labor-saving and effectively prevents slipping;

3. When the wrench of the utility model is reversely turned, the two opposite corners of the working object will respectively dodge into the first recess and the second recess, so that each clamping part of the wrench is idling and reset, and the wrench can be provided with a more simple operation. Continuous turning function, but it will not easily produce a slipping locking effect from the working object, and has more operational safety performance. It can lock the working object without pulling out the wrench, and makes the operation more convenient and convenient. Very expected and practical effect.

In the following, together with the specific embodiments cited in the accompanying drawings, the structures, functions, and expected effects of the components of the present invention will be described in detail, please refer to them together.

Description of drawings

Fig. 1 is a three-dimensional structure diagram of the jaw part of the first embodiment of the anti-slip open-end wrench of the present invention.

FIG. 2 is a schematic diagram of the planar structure of FIG. 1 , which shows how the work object is placed.

Fig. 3 is a schematic diagram of the planar structure continued from Fig. 2, which shows how each locking part locks the working object of the top catch.

FIG. 4 is a partially enlarged schematic view of part "A" of FIG. 3 .

Fig. 5 is a schematic plan view of the second embodiment of the anti-slip open-ended wrench of the present invention, which shows how each clamping part locks and pushes the working object.

FIG. 6 is a partially enlarged schematic view of part “B” of FIG. 5 .

FIG. 7 is a schematic plan view of the third embodiment of the anti-slip open-end wrench of the present invention, which shows how each clamping portion locks the working object.

FIG. 8 is a partially enlarged schematic view of part "C" of FIG. 7 .

FIG. 9 is a schematic plan view of the fourth embodiment of the anti-slip open-end wrench of the present invention, which shows how each clamping portion locks and pushes the working object.

FIG. 10 is a partially enlarged schematic view of part "D" of FIG. 9 .

Explanation of reference signs

Detailed ways

The above-mentioned purpose and advantages of the utility model can be easily understood from the detailed description and accompanying drawings of the following selected embodiments.

At first, as shown in Fig. 1 to Fig. 4, it is the first embodiment of the tool anti-slip open end wrench of the present utility model, comprises a wrench 10, wherein at least one end has a first jaw 11 corresponding to each other and A mouth 13 jointly formed by the second jaw 12 is provided with a first clamping portion 111, a second clamping portion 112A and a concave second recess 113 inside the first jaw 11, and the The inner side of the second jaw 12 is provided with a third clamping portion 122, a fourth clamping portion 123 and a first recess 121 located at the tip of the second jaw 12; wherein:

The second clamping portion 112A is in a convex arc shape and is provided at the bottom of the first jaw 11 so as to abut against the first clamping portion 111 , the third clamping portion 122 and the fourth clamping portion 123 respectively. On the four adjacent side surfaces of the working object 20, the working object 20 can be clamped and rotated correspondingly, and when the wrench 10 is turned clockwise, each clamping portion is made to abut against the side of the working object 20 so as to prevent the The working object 20 slips, and at the same time increases the contact area to evacuate the stress and increase the torque. In addition, the second clamping part 112A can also push the worn working object 20 to prevent the working object 20 from damaging the diagonal corner of the bolt;

Each of the clamping parts is at an asymmetrical angle to each other, in other words, the first clamping part 111 and the third clamping part 122 are non-parallel to each other, and the third clamping part 122 and the fourth clamping part The included angle θ≧120° between 123, the tip of the first jaw 11 and the second jaw 12 deviates outward at a specific angle, so as to increase the width of the jaw 13 and facilitate the work object 20 to enter more easily. jaw 13;

The two symmetrical insides of the first jaw 11 and the second jaw 12 are respectively provided with a first groove 14 and a second groove 15 for avoiding the corner of the working object 20, and the second clamping portion 112A and the fourth clamping portion 123 are provided with a third groove 16 for avoiding the working object 20; End corners are fine.

Regarding the actual actuation of the anti-slip open-end wrench of the present invention, through the structure of the above-mentioned clamping parts, it can be defined as that the wrench 10 can fix the work object 20 when it rotates the work object 20, and Torque action can be generated, and the working object 20 in this embodiment is a bolt. When the working object 20 enters the jaw 13, because the above-mentioned first clamping portion 111 and the third clamping portion 122 are not parallel to each other, the two opposite sides of the working object 20 that are most staggered will press against each other. Touch and contact the side edge of the first clamping part 111 and the third clamping part 122 against the plane (as shown in Figure 2), and continue to rotate the wrench 10 clockwise by a specific angle. At this time, the above two The side edges of the working object 20 slide along the two opposite sides, and the first concave portion 121 and the second concave portion 113 provide enough space for the working object 20 to rotate in the jaw 13, so as to promote the second clamping portion 112A and the second locking portion 112A. The abutting planes of the four clamping parts 123 are completely attached to the two adjacent sides of the work object 20, and the abutting planes of the first clamping part 111 and the third clamping part 122 are also completely in contact with the sides of the work object 20. The two opposite sides with the maximum stagger (as shown in Figure 3) can more effectively increase the rotational torque and the force couple effect of the contact point when performing the turning operation, and then have a locking effect that saves effort in the operation and effectively prevents slipping.

When the wrench 10 of the present utility model is reversely turned, the two opposite corners of the working object 20 that are most staggered dodge into the first concave portion 121 and the second concave portion 113 respectively, so that each clamping portion of the wrench 10 is idling and resets, thereby providing The wrench 10 has the function of operating one-way continuous turning, but has a locking effect that will not easily slip off from the work object 20, and has more operational safety performance, and can lock the work without pulling out the wrench. Object 20, and make the operation more convenient and extremely expected practical effect.

Please continue to refer to FIG. 5 and FIG. 6 , which are the second embodiment of the anti-slip open-ended wrench of the present invention. The main difference between it and the first embodiment is that the second clamping portion 112B is in a sawtooth shape.

Please continue to refer to FIG. 7 and FIG. 8 , which are the third embodiment of the anti-slip open-end wrench of the present invention. The main difference between it and the first embodiment is that the second clamping portion 112C is wave-shaped.

Please continue to refer to FIG. 9 and FIG. 10 , which are the fourth embodiment of the anti-slip open-ended wrench of the present invention. The main difference between it and the first embodiment is that the second clamping portion 112D is in the shape of an embossed plane.

In another embodiment of the present utility model, the fourth clamping portion 123 can be in the shape of a convex arc, a sawtooth shape, a wave shape or an embossed plane shape, which can more effectively increase its rotational torque and contact point when performing a turning operation. The action of the force couple makes the operation more labor-saving and effectively prevents the locking effect from slipping.

Therefore, the technical scope of the present utility model is not limited to the above-mentioned implementation forms, and various modifications can be added within the range not departing from the gist of the utility model to make it more suitable for a wide range of wrench work requirements.

Claims (10)

1. An open-end wrench with anti-slip, comprising: A wrench, at least one end of which has a jaw formed by a first jaw and a second jaw corresponding to each other, characterized in that: The inner side of the first jaw is provided with a first clamping part and its bottom end is provided with a second clamping part, and the inner side of the second jaw is provided with a third clamping part, a fourth clamping part and a The first concave part at the tip of the second jaw; wherein, the above-mentioned clamping parts are at an asymmetrical angle to each other, so that each clamping part is respectively against the four adjacent side surfaces of a clamped work object for Correspondingly clamp the side of the work object. the 2 . The anti-slip open-end wrench as claimed in claim 1 , wherein a concave second recess is provided inside the first jaw. 3 . the 3. The anti-slip open-end wrench as claimed in claim 1, characterized in that, the two symmetrical inner sides of the first jaw and the second jaw are respectively provided with a first concave for avoiding the corner of the work object. A groove and a second groove, and a third groove for dodging the end corner of the working object is provided between the second clamping part and the fourth clamping part. the 4 . The anti-slip open-end wrench as claimed in claim 1 , wherein the angle between the third clamping portion and the fourth clamping portion is ≧120°. the 5. The open-end wrench with anti-slip as claimed in claim 1, wherein the second clamping portion is in a convex arc shape. the 6 . The anti-slip open-end wrench as claimed in claim 1 , wherein the second clamping portion is in a sawtooth shape. 7 . the 7. The open-end wrench with slip prevention as claimed in claim 1, wherein the second clamping portion is wave-shaped. the 8 . The anti-slip open-end wrench as claimed in claim 1 , wherein the second clamping portion is in the shape of a raised plane. the 9 . The open-end wrench with anti-slip function according to claim 1 , wherein the fourth clamping portion is in a convex arc shape. 10 . the 10 . The anti-slip open end wrench as claimed in claim 1 , wherein the fourth clamping portion is in a sawtooth shape. 11 . the

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