Tire bolt disassembling and assembling tool for automobile disc brake

Abstract

The utility model belongs to the technical field of disassembly and assembly of automobile parts, and particularly relates to an automobile disc brake tire bolt disassembly and assembly tool which comprises an L-shaped support, a fixing seat, a pushing bolt, a bolt punching-in connector, a bolt punching-out connecting rod and a bolt punching-out connector. A disassembly and assembly cavity for a tire bolt to sink is formed between the fixing base and the end, away from the fixing base, of the L-shaped support, the pushing bolt is horizontally connected to the fixing base in a threaded mode, and the axial direction of the pushing bolt points to the end, away from the fixing base, of the L-shaped support. The end of the bolt punching-in connector and the end of the bolt punching-out connector are each provided with a sinking groove allowing a tire bolt to sink, and the bolt punching-in connector and the bolt punching-out connecting rod can be connected with the end, located in the disassembly and assembly cavity, of the pushing bolt. The tire bolt can be replaced under the condition that a brake is not disassembled, operation is flexible and convenient, safety is good, press-fitting quality is reliable, the labor intensity of workers is reduced, and disassembling and assembling efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of disassembly and assembly of automobile parts, and particularly relates to a disassembly and assembly tool for tire bolts of an automobile disc brake. Background Art

[0002] A disc brake, also known as a caliper brake, is controlled by air pressure or hydraulic pressure. Its main components include a brake disc, a wheel hub, a wheel cylinder, a brake caliper, an air pipe or an oil pipe, etc. The brake disc and the wheel hub are fixedly connected by hexagon head bolts. There are tire bolts on the wheel hub. The tire bolts are matched with the mounting holes on the rim of the automobile tire to fixedly mount the rim of the automobile tire on the wheel hub brake disc assembly, so that the brake disc rotates together with the automobile wheel. When the tire bolts of the disc brake are damaged, the traditional method is to disassemble the automobile wheel, then disassemble the wheel hub from the wheel hub brake disc assembly, and then use a hammer to knock the tire bolts for disassembly and replacement. However, since the tire bolts and the screw holes on the wheel hub are in interference fit, workers need to knock the tire bolts with great force. During this process, iron chips are likely to fly and hurt people, causing safety accidents; moreover, knocking with great force is likely to cause part deformation, affecting the assembly quality of the parts, thereby reducing the use reliability and service life of the parts. In addition, when workers disassemble and assemble the disc brake and knock to replace the tire bolts, the labor intensity is relatively large and the disassembly and assembly efficiency is relatively low. Content of the Utility Model

[0003] The utility model aims to provide a disassembly and assembly tool for tire bolts of an automobile disc brake to solve the problems of potential safety hazards and easy part deformation caused by knocking the tire bolts with great force.

[0004] To achieve the above purpose, the solution of the utility model is: a disassembly and assembly tool for tire bolts of an automobile disc brake, including an L-shaped bracket, a fixed seat, a pushing bolt, a bolt punching joint, a bolt punching rod and a bolt punching head. The fixed seat is fixedly connected with the L-shaped bracket. An assembly and disassembly cavity for the tire bolts to sink into is formed between the fixed seat and the end of the L-shaped bracket far away from the fixed seat. The pushing bolt is horizontally threadedly connected to the fixed seat, and the axial direction of the pushing bolt points to the end of the L-shaped bracket far away from the fixed seat. The ends of the bolt punching joint and the bolt punching head are both provided with sinking grooves for the tire bolts to sink into, and both the bolt punching joint and the bolt punching rod can be connected to one end of the pushing bolt located in the assembly and disassembly cavity.

[0005] The working principle and beneficial effects of this solution are as follows: In this solution, when it is necessary to disassemble the tire bolt, after removing the vehicle wheel, the bolt punching joint is buckled on one end of the damaged tire bolt. At this time, the head of the tire bolt is located in the recessed groove of the bolt punching joint. The bolt punching rod is abutted against the other end of the corresponding tire bolt. At this time, the other end of the bolt punching rod abuts against the pushing bolt. Rotate the pushing bolt to push out the damaged tire bolt. When it is necessary to install the tire bolt, buckle the bolt punching joint on the wheel hub and ensure that the tire bolt to be installed is inserted into the recessed groove of the bolt punching joint. At this time, the other end of the bolt punching joint abuts against the pushing bolt. Rotate the pushing bolt to push the intact tire bolt in. In this way, this solution does not require workers to knock the tire bolt with gravity, can replace the tire bolt without disassembling the brake, is flexible and convenient to operate, has good safety, reliable pressing quality, reduces the labor intensity of workers, and improves the disassembly and assembly efficiency.

[0006] Optionally, a thrust bearing is installed at one end of the pushing bolt in the disassembly and assembly cavity, and installation grooves for installing the thrust bearing are opened at the ends of the bolt punching joint and the bolt punching rod.

[0007] In this solution, the thrust bearing in the installation groove can effectively reduce the frictional resistance between the pushing bolt and the bolt punching joint or the bolt punching rod, which is more conducive to the rotation of the pushing bolt.

[0008] Optionally, a positioning block is provided on the side wall of the bolt punching joint away from its recessed groove, and a positioning groove matching with the positioning block is opened at one end of the L-shaped bracket away from the fixed seat.

[0009] In this solution, through the cooperation of the positioning block and the positioning groove, the bolt punching joint can be quickly installed. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 is a schematic structural diagram of a tire bolt disassembly and assembly tool for an automotive disc brake in Embodiment 1 of the present invention;

[0011] Figure 2 is a partial cross-sectional view when disassembling the tire bolt in Embodiment 1 of the present invention;

[0012] Figure 3 is a partial cross-sectional view when installing the tire bolt in Embodiment 1 of the present invention;

[0013] Figure 4 is a schematic structural diagram of a tire bolt disassembly and assembly tool for an automotive disc brake in Embodiment 2 of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0014] The following is a further detailed description through specific embodiments:

[0015] The markings in the attached drawings of the specification include: L-shaped bracket 1, fixed seat 2, pushing bolt 3, bolt punching-in joint 4, bolt punching-out connecting rod 5, bolt punching-out joint 6, disassembly and assembly cavity 7, thrust bearing 8, recessed groove 9, mounting groove 10, wheel hub 11, tire bolt 12, brake disc 13, positioning block 14, and positioning groove 15.

[0016] Embodiment 1

[0017] This embodiment is basically as Figures 1 - 3 shown: An automobile disc brake tire bolt disassembly and assembly tool includes an L-shaped bracket 1, a fixed seat 2, a pushing bolt 3, a bolt punching-in joint 4, a bolt punching-out connecting rod 5, and a bolt punching-out joint 6. The fixed seat 2 is welded to the L-shaped bracket 1, and the fixed seat 2 is welded to the right end of the L-shaped bracket 1. A disassembly and assembly cavity 7 for the tire bolt 12 to sink into is formed between the left end of the fixed seat 2 and the L-shaped bracket 1. The pushing bolt 3 is horizontally threadedly connected to the fixed seat 2, the axial direction of the pushing bolt 3 points to the left end of the L-shaped bracket 1, and a thrust bearing 8 is installed at the left end of the pushing bolt 3. Recessed grooves 9 for the tire bolt 12 to sink into are provided at the ends of both the bolt punching-in joint 4 and the bolt punching-out joint 6, mounting grooves 10 for installing the thrust bearing 8 are provided at the ends of both the bolt punching-in joint 4 and the bolt punching-out connecting rod 5, and the mounting groove 10 of the bolt punching-in joint 4 is arranged opposite to the recessed groove 9.

[0018] During actual use, after the automobile wheel is disassembled, the worker installs the bolt punching-out connecting rod 5 at the left end of the pushing bolt 3. In this way, the thrust bearing 8 is located in the mounting groove 10 of the bolt punching-out connecting rod 5. Then, the worker buckles the bolt punching-out joint 6 on the left side wall of the wheel hub 11 (the brake disc 13 is fixedly connected to the wheel hub 11), and covers the head of the damaged tire bolt 12 in the recessed groove 9 of the bolt punching-out joint 6. Subsequently, the L-shaped bracket 1 is placed on the edge of the wheel hub 11, and the left side wall of the bolt punching-out joint 6 is abutted against the left end of the L-shaped bracket 1. At this time, the left ends of the bolt punching-out joint 6, the tire bolt 12, the bolt punching-out connecting rod 5, and the pushing bolt 3 are all located in the disassembly and assembly cavity 7. Then, the worker uses a wrench to rotate the pushing bolt 3, and the pushing bolt 3 moves leftward relative to the fixed seat 2, so that the bolt punching-out connecting rod 5 moves leftward, and then the bolt punching-out connecting rod 5 pushes the tire bolt 12 leftward. The head (left end) of the tire bolt 12 gradually sinks into the recessed groove 9 of the bolt punching-out joint 6, as Figure 2 shown. After the part of the tire bolt 12 that is in interference fit with the wheel hub 11 screw hole is completely pushed out, the pushing bolt 3 is rotated in the reverse direction, the bolt punching-out connecting rod 5 moves rightward together with the pushing bolt 3, then the L-shaped bracket 1 and the bolt punching-out joint 6 are removed, and finally the damaged tire bolt 12 is removed to complete the disassembly of the tire bolt 12.

[0019] Then, the worker removes the bolt punching adapter 5 from the pushing bolt 3, inserts a new tire bolt 12 into the threaded hole of the wheel hub 11, then sleeves the bolt punching joint 4 on the outer rod part of the new tire bolt 12, and ensures that the left end of the bolt punching joint 4 abuts against the right side wall of the wheel hub 11. Then, the worker places the L-shaped bracket 1 on the edge of the wheel hub 11, aligns the thrust bearing 8 at the left end of the pushing bolt 3 with the installation groove 10 of the bolt punching joint 4, and moves the L-shaped bracket 1 to the left so that the thrust bearing 8 enters the installation groove 10 of the bolt punching joint 4. Then, the worker rotates the pushing bolt 3, causing the fixed seat 2 to drive the L-shaped bracket 1 to move to the right relative to the pushing bolt 3 until the left end of the L-shaped bracket 1 abuts against the head of the tire bolt 12, as Figure 3 shown. The worker continues to rotate the pushing bolt 3, and the L-shaped bracket 1 applies a rightward pushing force to the tire bolt 12, thereby completely pushing the tire bolt 12 into the corresponding threaded hole on the wheel hub 11 to complete the installation of the tire bolt 12. Finally, rotate the pushing bolt 3 in the reverse direction, causing the fixed seat 2 to drive the L-shaped bracket 1 to move to the left relative to the pushing bolt 3, and then the L-shaped bracket 1 and the bolt punching joint 4 can be removed.

[0020] In summary, in this embodiment, after disassembling the automobile wheel, the damaged tire bolt 12 can be replaced without disassembling the brake. The operation is flexible and convenient, with good safety, reliable pressing quality, reduced labor intensity of the worker, and improved disassembly and assembly efficiency.

[0021] Embodiment 2

[0022] The difference between this embodiment and Embodiment 1 is that: as Figure 4 shown, in this embodiment, a positioning block 14 is welded on the left side wall of the bolt punching joint 6, and a positioning groove 15 matching the positioning block 14 is provided at the left end of the L-shaped bracket 1 (the left inner wall of the disassembly and assembly cavity 7). In this way, under the cooperation of the positioning block 14 and the positioning groove 15, when the left side wall of the bolt punching joint 6 abuts against the left end of the L-shaped bracket 1, it is restricted radially, and the bolt punching joint 6 is not prone to radial movement; moreover, the bolt punching joint 6 can be pre-connected to the left end of the L-shaped bracket 1, and then the L-shaped bracket 1 and the bolt punching joint 6 are placed on the wheel hub 11 together.

[0023] The above are only the embodiments of the present invention, and common knowledge such as specific structures and characteristics known in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the structure of the present invention, several deformations and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the implementation effect of the present invention and the practicality of the present invention. The specific implementation manners and the like described in the specification can be used to explain the content of the claims.

Claims

1. A disassembly and assembly tool for tire bolts of an automotive disc brake, characterized in that: It includes an L-shaped bracket, a fixed seat, a pushing bolt, a bolt punching-in joint, a bolt punching-out connecting rod, and a bolt punching-out joint. The fixed seat is fixedly connected to the L-shaped bracket, and a disassembly and assembly cavity for a tire bolt to sink into is formed between the fixed seat and the end of the L-shaped bracket far from the fixed seat. The pushing bolt is horizontally threadedly connected to the fixed seat, and the axial direction of the pushing bolt points to the end of the L-shaped bracket far from the fixed seat. Both ends of the bolt punching-in joint and the bolt punching-out joint are provided with sinking grooves for the tire bolt to sink into, and both the bolt punching-in joint and the bolt punching-out connecting rod can be connected to one end of the pushing bolt located in the disassembly and assembly cavity.

2. The tire bolt disassembly and assembly tool for an automotive disc brake according to claim 1, wherein: A thrust bearing is installed at one end of the pushing bolt located in the disassembly and assembly cavity, and installation grooves for installing the thrust bearing are provided at both ends of the bolt punching-in joint and the bolt punching-out connecting rod.

3. The tire bolt disassembly and assembly tool for an automotive disc brake according to claim 1 or 2, characterized in that: A positioning block is provided on a side wall of the bolt punching-out joint far from its sinking groove, and a positioning groove matched with the positioning block is provided at the end of the L-shaped bracket far from the fixed seat.

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