Motor car maintenance torque wrench

Abstract

The utility model relates to a motor car maintenance torque wrench, which belongs to the technical field of maintenance tools, and comprises a wrench handle, a main pipe and a reversing gear, the outer wall of the wrench handle is provided with an adjusting structure, the adjusting structure comprises a reversing button connected to the peripheral wall of the main pipe in a sliding manner, the peripheral wall of the main pipe is fixedly provided with two U-shaped sliding chutes, and the U-shaped sliding chutes are connected with the reversing gear in a sliding manner. A stainless steel strip is slidably connected into the U-shaped sliding groove. According to the motor car maintenance torque wrench, the tooth-missing rack with three teeth is adopted, two separation points between the transmission distance of the rack and the transmission distance of the gear are simply completed, and a stainless steel strip slides in the two U-shaped sliding grooves to drive the rack to move linearly, so that a control point of a reversing button is prolonged stably and reliably; the extended reversing button enables technical machine maintenance workers to quickly complete screw dismounting operation in a narrow space, errors caused by the fact that bolts or nuts are driven to fall off when the machine maintenance workers repeatedly take down a torque wrench in the operation process are avoided, and the assisting time of an existing machine maintenance worker assisting worker is shortened.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of maintenance tool, concretely is a bullet train maintenance torque wrench. BACKGROUND

[0002] The current bullet train maintenance torque wrench reversing operation disc is at the uppermost end of the wrench, and the torque wrench is often sleeved on the screw in a narrow space for loosening operation, if tightening operation is needed, the torque wrench must be taken out, the reversing disc is poked again after the thumb pokes the reversing disc, the direction is easy to select wrong when the reversing disc is operated, if the hand is forced to stretch to the reversing disc to poke the reversing disc, the finger can be hurt, such operation is time-consuming and laborious, and the work period is delayed.

[0003] The existing problems of the prior art have the following points:

[0004] The original torque wrench is a general design, the reversing operation mechanism is designed at the top end, the cost is reduced and the reliability is improved, and the torque wrench can only be used in a large space and is difficult to operate in a small space;

[0005] The structure of the original torque wrench is fixed, and the products on the market are basically of the same type of structure;

[0006] If the handle is provided with a reversing knob, the volume of the wrench is increased, the measurement accuracy is affected, the cost is increased, and various conveniences and practical economy in use are not conducive, therefore, the bullet train maintenance torque wrench is provided. CONTENT OF THE UTILITY MODEL

[0007] In view of the defects of the prior art, the utility model provides a bullet train maintenance torque wrench, which has the advantages of improving the convenience of use, and solves the problem that the reversing operation mechanism is designed at the top end, the cost is reduced, the reliability is improved, and the torque wrench can only be used in a large space and is difficult to operate in a small space.

[0008] In order to achieve the above purpose, the utility model provides the following technical scheme: a bullet train maintenance torque wrench, comprising a wrench handle, a main pipe and a reversing gear, the outer wall of the wrench handle is provided with an adjusting structure;

[0009] The adjusting structure comprises a reversing knob slidably connected to the outer peripheral wall of the main pipe, the outer peripheral wall of the main pipe is fixedly installed with two U-shaped sliding grooves, the inside of the U-shaped sliding groove is slidably connected with a stainless steel strip, the right side outer wall of the U-shaped sliding groove is fixedly installed with a spring guard plate, the back side wall of the bottom U-shaped sliding groove is embedded with a V-shaped positioning spring, and the top of the stainless steel strip is fixedly installed with a toothless rack.

[0010] Further, the reversing gear comprises a reversing dial and a gear, the gear is welded in the inside of the reversing dial, and the reversing gear has thirty teeth.

[0011] Further, the reversing knob is fixedly installed at the bottom of the stainless steel strip which is slidingly connected to the outer circumferential wall of the main pipe.

[0012] Further, the back wall of the U-shaped sliding groove at the bottom is provided with a clamping hole, and the V-shaped positioning spring is embedded in the clamping hole in a size-fitting manner.

[0013] Further, the reversing gear and the toothless rack are in meshing engagement.

[0014] Further, the back wall of the stainless steel strip is provided with two V-shaped positioning openings.

[0015] Further, the main pipe is fixedly installed at the top of the wrench handle, and the reversing gear is installed at the top of the main pipe.

[0016] Compared with the prior art, the technical scheme has the following beneficial effects:

[0017] The motor vehicle maintenance torque wrench adopts the toothless rack with three teeth, and the two separation points between the rack and the gear transmission distance are simply completed; the linear motion of the rack is stably and reliably completed by the sliding of the stainless steel strip in the two U-shaped sliding grooves to drive the extension control point of the reversing knob; the extended reversing knob can enable the technical mechanic to quickly complete the screw disassembly operation in a narrow space, solve the mistake caused by the falling of the bolt or nut when the torque wrench is repeatedly taken off during the operation of the mechanic, and solve the assistance time of the existing mechanic assistant. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a structural schematic view of the utility model;

[0019] Figure 2 It is the utility model Figure 1 It is a left side structural schematic view;

[0020] Figure 3 It is a spring guard structural schematic view of the utility model;

[0021] Figure 4 It is a U-shaped sliding groove and V-shaped positioning spring connecting structural schematic view of the utility model;

[0022] Figure 5 It is a stainless steel strip structural schematic view of the utility model.

[0023] In the drawing:

[0024] 1, wrench handle; 2, main pipe; 3, reversing gear; 4, reversing knob; 5, U-shaped sliding groove; 6, stainless steel strip; 7, V-shaped positioning spring; 8, spring guard; 9, toothless rack. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0026] Please refer to Figures 1 to 3 The utility model discloses a motorcar maintenance torque wrench, including wrench handle 1, main pipe 2 and reversing gear 3, the outer wall of wrench handle 1 is equipped with adjusting structure.

[0027] Main pipe 2 is fixedly installed at the top of wrench handle 1, and reversing gear 3 is installed at the top of main pipe 2.

[0028] Reversing gear 3 includes reversing dial and gear, the gear is welded in the inside of reversing dial, and reversing gear 3 is thirty teeth.

[0029] Adjusting structure includes reversing knob 4 that is slidably connected to the outer circumferential wall of main pipe 2, the outer circumferential wall of main pipe 2 is fixedly installed with two U-shaped sliding grooves 5, the inside of U-shaped sliding groove 5 is slidably connected with stainless steel strip 6, the back side wall of stainless steel strip 6 is provided with two V-shaped positioning openings, reversing knob 4 is fixedly installed at the bottom of stainless steel strip 6, and stainless steel strip 6 is slidably connected to the outer circumferential wall of main pipe 2.

[0030] The right outer wall of U-shaped sliding groove 5 is fixedly installed with spring guard plate 8, the back side wall of bottom U-shaped sliding groove 5 is embedded with V-shaped positioning spring 7, the back side wall of bottom U-shaped sliding groove 5 is provided with clamping hole, V-shaped positioning spring 7 is embedded in the inside of clamping hole and is compatible in size, the top of stainless steel strip 6 is fixedly installed with toothless rack 9, and reversing gear 3 and toothless rack 9 are engaged with each other.

[0031] In the embodiment, the gear is welded to the direction dial, the direction dial drives the reversing gear 3 to rotate after rotating, the center is fixed in the original threaded hole by M4 screw glue, and the gear is ensured to rotate easily.

[0032] In the embodiment, the number of teeth of toothless rack 9 is three.

[0033] In the embodiment, the protruding part of V-shaped positioning spring 7 is 60 °.

[0034] The working principle of the above embodiment is as follows:

[0035] When the torque wrench needs to be reversed, the thumb pushes the reversing button 4 upwards, and the stainless steel strip 6 slides upwards at the same time, and when the V-shaped positioning port on the stainless steel strip 6 moves to the 60° protruding part of the V-shaped positioning spring 7, the 60° protruding part will be pressed into the V-shaped positioning port due to the pressure of the V-shaped positioning spring 7, and at the same time, the first tooth and the second tooth and the third tooth of the missing tooth rack 9 gradually engage the reversing gear 3 and push it to rotate counterclockwise by about 90°, and the missing tooth rack 9 moves upwards by half a tooth distance and is locked by the V-shaped positioning spring 7 of the 60° protruding part in the V-shaped positioning port, completing the upward positioning, and at this time, since the missing tooth rack 9 and the reversing gear 3 are in a non-engaged state, the tooth rack and the stainless steel strip 6 will not interfere with the normal operation of the torque wrench when the torque wrench is tightened, and all the connecting parts on the stainless steel strip 6 are locked and positioned, and will not move in the two sliding grooves, ensuring the normal operation of the direction dial and ensuring the correct operation of the operator, providing a guarantee for the next operation.

[0036] It should be noted that the relative terms such as first and second, and the like are used herein solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by an "including a" statement does not exclude the existence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0037] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made thereto without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A motor vehicle maintenance torque wrench comprising a wrench handle (1), a main shaft (2) and a reversing gear (3), characterized in that: The outer wall of the wrench handle (1) is provided with an adjusting structure; The adjusting structure comprises a reversing knob (4) slidingly connected to the outer peripheral wall of the main pipe (2), the outer peripheral wall of the main pipe (2) is fixedly provided with two U-shaped sliding grooves (5), the inside of the U-shaped sliding groove (5) is slidingly connected with a stainless steel strip (6), the right outer wall of the U-shaped sliding groove (5) is fixedly provided with a spring guard plate (8), the back wall of the bottom of the U-shaped sliding groove (5) is embedded with a V-shaped positioning spring (7), and the top of the stainless steel strip (6) is fixedly provided with a toothless rack (9).

2. The maintenance torque wrench for a motor car according to claim 1, characterized in that: The reversing gear (3) comprises a reversing dial and a gear, the gear is welded inside the reversing dial, and the reversing gear (3) has thirty teeth.

3. The twist wrench for maintaining the motor car according to claim 1, wherein: The reversing knob (4) is fixedly installed at the bottom of the stainless steel strip (6), and the stainless steel strip (6) is slidingly connected to the outer peripheral wall of the main pipe (2).

4. The twist wrench for maintaining the motor car according to claim 1, wherein: The back wall of the bottom of the U-shaped sliding groove (5) is provided with a clamping hole, and the V-shaped positioning spring (7) is embedded in the inside of the clamping hole and is appropriately sized.

5. The twist hand tool for maintaining the motor car according to claim 1, wherein: The reversing gear (3) and the toothless rack (9) are in meshing engagement.

6. The twist wrench for maintaining a motor car according to claim 1, wherein: The back wall of the stainless steel strip (6) is provided with two V-shaped positioning openings.

7. The twist hand tool for maintaining the train according to claim 1, wherein: The main pipe (2) is fixedly installed at the top of the wrench handle (1), and the reversing gear (3) is installed at the top of the main pipe (2).

Images