Reaction force arm for bolt tightening wrench

Abstract

The utility model provides a counter-acting force arm for a bolt tightening wrench, which comprises a clamping mechanism and a positioning mechanism, the clamping mechanism is detachably connected with the tightening wrench, and the tightening wrench can be stably mounted, so that the clamping mechanism and the tightening wrench form a stable integral structure in the tightening process to transmit torque together; the positioning mechanism comprises a connecting rod and a positioning part, one end of the connecting rod is connected with the clamping mechanism, and the other end is connected with the positioning part; the positioning part is connected with the mounting piece of the bolt in a clamping mode, the positioning part stably abuts against the mounting piece in the screwing process, and the screwing wrench and the screwing sleeve are effectively prevented from rotating together. Due to the fact that the counter-acting force arm provides a stable counter-acting force fulcrum, the tightening wrench can continue to provide tightening torque to tighten the bolt under the condition that the tightening wrench is subjected to counter-acting force until the preset tightening torque value is reached, the bolt is firmly tightened, and reliability and safety of bolt connection are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to automobile assembly technical field especially is a reaction force arm for bolt tightening wrench. BACKGROUND

[0002] The bolt for automobile assembly is fixed by driving the tightening sleeve combined with the bolt to rotate through the tightening wrench. In order to ensure that the bolt does not loosen, the automatic tightening wrench needs to reach a certain tightening torque value to tighten the bolt. During the tightening process, the tightening wrench and the tightening sleeve will be subjected to a reverse force. When the reverse force is too large, the tightening wrench will rotate with the tightening sleeve, which will not tighten the bolt according to the specified tightening torque value, and there is a risk of bolt loosening, which has great safety hazards.

[0003] Therefore, the utility model is provided. UTILITY MODEL CONTENTS

[0004] The utility model discloses a reaction force arm for bolt tightening wrench, which solves the technical problem that the existing bolt tightening wrench lacks a reaction force arm, resulting in that the tightening wrench and the tightening sleeve are subjected to a reverse force during the bolt tightening process, the tightening wrench does not reach the specified tightening torque value to tighten the bolt, there is a risk of bolt loosening, and there are great safety hazards. The preferred technical solution in the many technical solutions provided by the utility model can produce many technical effects, which are described below.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] The utility model provides a reaction force arm for bolt tightening wrench, which comprises a clamping mechanism and a positioning mechanism, the clamping mechanism is detachably connected with the tightening wrench, the positioning mechanism comprises a connecting rod and a positioning part, one end of the connecting rod is connected with the clamping mechanism, the other end is connected with the positioning part, and the positioning part is connected with the mounting part of the bolt through clamping connection.

[0007] Preferably, the clamping mechanism comprises a first clamping part and a second clamping part, the first clamping part is connected with the connecting rod, and clamping grooves are formed on the opposite sides of the first clamping part and the second clamping part to form a clamping cavity together for clamping the tightening wrench.

[0008] Preferably, a connecting groove is formed on the first clamping part, a connecting through hole is formed on the second clamping part, the connecting groove and the connecting through hole are arranged one by one in correspondence, and are connected through a bolt.

[0009] Preferably, an avoiding groove is formed on the first clamping part for avoiding the tightening sleeve.

[0010] Preferably, the positioning part comprises a positioning seat and supporting legs, the positioning seat is in L-shaped structure and is connected with the connecting rod, and the supporting legs are evenly arranged on the bottom surface of the positioning seat.

[0011] Preferably, the supporting legs are three in number and are arranged at the end and the corner of the positioning seat respectively.

[0012] Preferably, the opening direction of the avoiding groove is consistent with the direction of the corner of the positioning seat.

[0013] Preferably, reinforcing ribs are arranged between the connecting rod and the first clamping part and between the connecting rod and the positioning seat.

[0014] The preferred technical scheme of the utility model can produce at least the following technical effects:

[0015] The utility model discloses effectively avoided the existing bolt tightening wrench of prior art lacks reaction force arm, lead to in the bolt tightening process, tightening wrench and tightening sleeve will receive reverse action force, and tightening wrench does not reach the screw bolt tightening fixed of specified tightening torque numerical value, and there is the technical problem of bolt loosening risk, has very big security hidden danger. The utility model discloses a kind of reaction force arm for bolt tightening wrench, including clamping mechanism and positioning mechanism, clamping mechanism is detachably connected with tightening wrench;Positioning mechanism includes connecting rod and positioning part, one end of connecting rod is connected with clamping mechanism, and the other end is connected with positioning part;Positioning part is connected with the mounting piece of bolt by clamping. Clamping mechanism can stably install tightening wrench, so that in tightening process, the stable overall structure is formed by the two, and torque is transmitted together. Positioning part is connected with the mounting piece of bolt by clamping, and positioning part stably abuts mounting piece in tightening process, effectively prevents tightening wrench from rotating with tightening sleeve. Since the stable reaction force fulcrum is provided by reaction force arm, tightening wrench can continue to provide tightening torque to tighten bolt under the condition of receiving reaction force, until the preset tightening torque value is reached, the bolt is tightly tightened, and the reliability and safety of bolt connection are improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creative labor on the premise of the drawings.

[0017] Fig. 1 It is a structural schematic diagram of the reaction force arm for bolt tightening wrench provided by the utility model;

[0018] Fig. 2 This is a structural schematic diagram from another perspective of the reaction arm of a bolt tightening wrench provided by this utility model.

[0019] In the picture:

[0020] 1. Clamping mechanism; 11. First clamping part; 111. First clamping groove; 112. Clearance groove; 12. Second clamping part; 121. Second clamping groove; 122. Connecting through hole;

[0021] 2. Positioning mechanism; 21. Connecting rod; 22. Positioning seat; 23. Support leg;

[0022] 3. Reinforcing ribs. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0024] like Figs. 1-2 As shown, this utility model provides a reaction arm for a bolt tightening wrench, including a clamping mechanism 1 and a positioning mechanism 2. The clamping mechanism 1 is detachably connected to the tightening wrench; the positioning mechanism 2 includes a connecting rod 21 and a positioning part. One end of the connecting rod 21 is connected to the clamping mechanism 1, and the other end is connected to the positioning part; the positioning part is snapped into the bolt mounting part.

[0025] The clamping mechanism 1 securely mounts the tightening wrench, forming a stable integrated structure during tightening to jointly transmit torque. The positioning part engages with the bolt mounting component, firmly holding the mounting component in place during tightening and effectively preventing the tightening wrench and tightening sleeve from rotating together. Because the reaction arm provides a stable fulcrum for the reaction force, the tightening wrench can continue to provide tightening torque to tighten the bolt even under reaction force until the preset tightening torque value is reached, firmly tightening the bolt and improving the reliability and safety of the bolted connection.

[0026] As an optional implementation, the clamping mechanism 1 includes a first clamping part 11 and a second clamping part 12. The first clamping part 11 is connected to the connecting rod 21. Clamping grooves are provided on opposite sides of the first clamping part 11 and the second clamping part 12 to form a clamping cavity for clamping the tightening wrench.

[0027] Further, the first clamping part 11 is provided with a first clamping groove 111, and the second clamping part 12 is provided with a second clamping groove 121, and the first clamping groove 111 and the second clamping groove 121 jointly form a clamping cavity for clamping the tightening wrench.

[0028] In this way, the tightening wrench can be stably clamped in the clamping cavity, and movement or falling during operation is prevented.

[0029] As an optional implementation, the first clamping part 11 is provided with a connecting groove, and the second clamping part 12 is provided with a connecting through hole 122, and the connecting groove and the connecting through hole 122 are one-to-one corresponding and connected by a bolt.

[0030] Further, the number of connecting grooves is two, and they are symmetrically arranged on the first clamping part 11. The number of connecting through holes 122 is two, and they are symmetrically arranged on the second clamping part 12.

[0031] The bolt passes through the connecting through hole 122 and is connected with the connecting groove, so that the first clamping part 11 and the second clamping part 12 are stably connected together, thereby realizing clamping and fixing of the tightening wrench.

[0032] As an optional implementation, the first clamping part 11 is provided with an avoiding groove 112 for avoiding the tightening sleeve.

[0033] Further, the first clamping part 11 is provided with an avoiding groove 112 near the side of the tightening sleeve. The avoiding groove 112 and the first clamping groove 111 are smoothly transitioned.

[0034] In this way, the operation space requirement of the tightening sleeve can be met, so that the tightening sleeve will not be interfered by the first clamping part 11 during operation.

[0035] As an optional implementation, the positioning part includes a positioning seat 22 and a supporting leg 23, the positioning seat 22 is an L-shaped structure and is connected with the connecting rod 21, and the number of supporting legs 23 is multiple and they are evenly arranged on the bottom surface of the positioning seat 22.

[0036] Further, the connecting rod 21 is connected at the corner of the positioning seat 22. The inner side of the corner of the positioning seat 22 is smoothly transitioned, which is used for avoiding the tightening sleeve and ensuring the structural strength without interfering with the operation of the tightening sleeve.

[0037] The supporting legs 23 are evenly distributed on the bottom surface of the positioning seat 22, which is used for providing balanced supporting force.

[0038] As an optional implementation, the number of supporting legs 23 is three, forming a triangular support, and they are respectively arranged at the end and the corner of the positioning seat 22.

[0039] The specification of the positioning seat 22 can be designed according to the use requirement to be suitable for different specifications of the mounting member.

[0040] The two adjacent legs 23 abut against one side of the mounting member, and the other leg 23 abuts against the other opposite side of the mounting member, and meanwhile, the bottom surface of the positioning seat 22 abuts against the top surface of the mounting member, so that the clamping connection between the positioning part and the mounting rack is formed to avoid the relative movement between the tightening wrench and the mounting rack during the tightening process.

[0041] As an optional implementation, the opening direction of the avoiding groove 112 is consistent with the direction of the corner of the positioning seat 22.

[0042] In this way, the operation space requirement of the tightening sleeve can be met, so that the tightening sleeve will not be interfered by the first clamping part 11 and the positioning seat 22 during the operation.

[0043] As an optional implementation, the reinforcing ribs 3 are arranged between the connecting rod 21 and the first clamping part 11 and between the connecting rod 21 and the positioning seat 22.

[0044] In this way, the structural strength and stability of the reaction force arm can be improved, and the service life is prolonged.

[0045] It can be understood that the same or similar parts in the above embodiments can be mutually referred to, and the contents not described in detail in some embodiments can be referred to the same or similar contents in other embodiments.

[0046] In the description of the utility model, it needs to be explained that, unless otherwise stated, the meaning of "multiple" is two or more than two; the orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and cannot be understood as indicating or implying that the indicated device or element must have a specific orientation, a specific orientation and operation, therefore, it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0047] In the description of the utility model, it also needs to be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connection" and "connection" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0048] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example" or "one example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples.

[0049] The above merely describes specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A reaction force arm for a bolt tightening wrench, characterized by, The utility model relates to a kind of screwing wrenches, including clamping mechanism and positioning mechanism, the clamping mechanism is detachably connected with screwing wrench;The positioning mechanism includes connecting rod and positioning part, one end of the connecting rod is connected with the clamping mechanism, the other end is connected with the positioning part;The positioning part is connected with the mounting piece of bolt.

2. A reaction arm for a screw tightening wrench according to claim 1, wherein The clamping mechanism includes first clamping part and second clamping part, the first clamping part is connected with the connecting rod, and the opposite sides of the first clamping part and the second clamping part are provided with clamping grooves to form a clamping cavity, for clamping screwing wrench.

3. A reaction arm for a screw tightening wrench according to claim 2, wherein The first clamping part is provided with connecting groove, and the second clamping part is provided with connecting through hole, the connecting groove and the connecting through hole are one-to-one corresponding, and are connected by bolt.

4. The reaction arm for a screw tightening wrench according to claim 2, wherein The first clamping part is provided with avoiding recess, for avoiding tightening sleeve.

5. A reaction arm for a screw tightening wrench according to claim 4, wherein The positioning part includes positioning seat and supporting leg, the positioning seat is L-shaped structure, and is connected with the connecting rod;The number of the supporting leg is multiple, and is evenly arranged on the bottom surface of the positioning seat.

6. A reaction arm for a screw tightening wrench according to claim 5, wherein The number of the supporting leg is three, and is arranged at the end and corner of the positioning seat respectively.

7. A reaction arm for a screw tightening wrench according to claim 5, wherein The opening direction of the avoiding recess is consistent with the direction of the corner of the positioning seat.

8. A reaction arm for a screw tightening wrench according to claim 5, wherein The connecting rod and the first clamping part and the connecting rod and the positioning seat are provided with reinforcing ribs.

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