Disassembling tool for automobile brake cylinder piston

Abstract

The utility model discloses an automobile brake cylinder piston dismounting tool, which relates to the technical field of automobile maintenance, and has the technical key points that the automobile brake cylinder piston dismounting tool comprises a working table, a fixed frame is fixedly mounted on the upper end surface of the working table, bolts are rotatably mounted on the outer walls of the two sides of the fixed frame in a penetrating manner, and clamping plates are rotatably mounted at the end parts of the two bolts through connecting mechanisms; a movable frame is fixedly installed on the upper end face of the fixed frame, the outer walls of the two sides of the movable frame are connected with the upper end face of the fixed frame through reinforcing mechanisms, a fixed plate is fixedly installed on the inner wall of the movable frame, and a threaded rod is rotationally installed between the interior of the movable frame and the fixed plate. The motor continuously drives the threaded rod to rotate, the movable sleeve drives the push plate to continuously move towards the brake cylinder piston, the push plate stably pushes out the brake cylinder piston, and the disassembly work is completed, so that the situation that the brake cylinder is damaged by a traditional disassembly method is avoided, and the disassembly efficiency and safety are improved.

Description

Technical Field

[0001] This utility model relates to the field of automotive repair technology, specifically a tool for disassembling automotive brake caliper pistons. Background Technology

[0002] The brake caliper is a key component of the automotive braking system. Its main function is to convert the force of the driver pressing the brake pedal into hydraulic pressure, which pushes the brake pads against the brake disc or brake drum to achieve deceleration or stopping. It receives hydraulic oil pressure from the master cylinder, drives the internal piston to move, and then pushes the brake pads to complete the braking action.

[0003] As a key component of the braking system, the brake caliper piston often needs to be removed from the caliper cylinder body when it needs repair, seal replacement, or piston jamming. In existing technology, the brake caliper piston and cylinder body are tightly fitted. Due to the friction of the rubber seals and the residual pressure of the internal hydraulic system, traditional disassembly methods often rely on general tools such as screwdrivers and pry bars to forcibly pry it open. This method is not only inefficient but also easily damages the piston surface, the inside of the cylinder body, and the seals. Once damaged, it may lead to safety hazards such as oil leakage and reduced braking force in subsequent use of the brake caliper, seriously affecting the performance and reliability of the car's braking system and making it impractical. Therefore, it is necessary to redesign the car brake caliper piston disassembly tool to address the above problems. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a tool for disassembling automotive brake caliper pistons. This solves the problem that traditional disassembly methods often rely on general-purpose tools such as screwdrivers and pry bars to forcibly pry the piston. This method is not only inefficient but also easily damages the piston surface, cylinder interior, and seals. Once damage occurs, it may lead to safety hazards such as oil leakage and reduced braking force in subsequent use of the brake caliper, seriously affecting the performance and reliability of the automotive braking system.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a tool for disassembling automotive brake caliper pistons, comprising a workbench, a fixed frame fixedly mounted on the upper surface of the workbench, bolts rotatably penetrating both outer walls of the fixed frame, clamping plates rotatably mounted at the ends of both bolts via a connecting mechanism, a movable frame fixedly mounted on the upper surface of the fixed frame, both outer walls of the movable frame connected to the upper surface of the fixed frame via a reinforcing mechanism, a fixed plate fixedly mounted on the inner wall of the movable frame, a threaded rod rotatably mounted between the movable frame and the fixed plate, and a connecting rod connected to the threaded rod fixedly mounted on the bottom wall of the fixed plate. The motor has a limiting rod fixedly installed between the moving frame and the fixed plate. A moving sleeve is threaded onto the outer wall of the threaded rod. The limiting rod slides through the moving sleeve. Connecting sleeves are fixedly installed on both outer walls of the moving sleeve through a connecting mechanism. Connecting rods are slidably installed inside the two connecting sleeves. Push plates are fixedly installed at the ends of the two connecting rods. Fixed pins slide through the outer walls of the two connecting sleeves. Insertion holes that mate with the fixed pins on the same side are opened on the outer walls of the two connecting rods. Toggle blocks are fixedly installed at the ends of the two fixed pins. The inner walls of the two toggle blocks are connected to the outer walls of the connecting sleeves through a fixing mechanism.

[0008] Preferably, the connecting mechanism includes a connecting block fixedly installed at the end of the bolt, and the inner wall of the connecting block is rotatably connected to the outer wall of the clamping plate.

[0009] Preferably, the reinforcement mechanism includes a reinforcing rod fixedly installed on the outer wall of the movable frame, and the end of the reinforcing rod is fixedly connected to the upper end face of the fixed frame.

[0010] Preferably, the connecting mechanism includes a connecting rod fixedly installed on the outer wall of the movable sleeve, and the end of the connecting rod is fixedly connected to the inside of the connecting sleeve.

[0011] Preferably, the fixing mechanism includes a fixing spring installed on the outer wall of the fixing pin, and the two ends of the fixing spring are elastically connected to the inner wall of the lever block and the outer wall of the connecting sleeve, respectively.

[0012] Preferably, protective pads are fixedly installed on the inner walls of both clamping plates, and both protective pads are made of rubber.

[0013] (III) Beneficial Effects

[0014] Compared with the prior art, this utility model provides a tool for disassembling automotive brake caliper pistons, which has the following advantages:

[0015] This invention incorporates components such as a threaded rod, a limiting rod, and a push plate. The motor continuously drives the threaded rod to rotate, causing the moving sleeve to move the push plate towards the brake caliper piston. This allows the push plate to smoothly push out the brake caliper piston, completing the disassembly process. This avoids damage to the brake caliper caused by traditional disassembly methods and improves disassembly efficiency and safety. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the automotive brake caliper piston disassembly tool proposed in this utility model.

[0017] Figure 2 This is a side view of the automotive brake caliper piston disassembly tool proposed in this utility model.

[0018] Figure 3 for Figure 1 A schematic diagram of the vertical section structure;

[0019] Figure 4 for Figure 1 Enlarged schematic diagram of the structure at point A in the diagram;

[0020] Figure 5 for Figure 3 Enlarged schematic diagram of the structure at point B in the diagram.

[0021] In the diagram: 1. Workbench, 2. Fixed frame, 3. Bolt, 4. Connecting block, 5. Clamping plate, 6. Protective pad, 7. Moving frame, 8. Reinforcing rod, 9. Fixed plate, 10. Threaded rod, 11. Motor, 12. Limiting rod, 13. Moving sleeve, 14. Connecting rod, 15. Connecting sleeve, 16. Connecting rod, 17. Push plate, 18. Fixed pin, 19. Pulley, 20. Fixed spring. Detailed Implementation

[0022] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0023] This utility model provides a technical solution for disassembling automotive brake caliper pistons:

[0024] Please see Figures 1-5A tool for disassembling automotive brake caliper pistons includes a workbench 1. A fixed frame 2 is fixedly mounted on the upper surface of the workbench 1. Bolts 3 are rotatably installed through both outer walls of the fixed frame 2. Clamping plates 5 are rotatably mounted at the ends of the two bolts 3 via a connecting mechanism. A movable frame 7 is fixedly mounted on the upper surface of the fixed frame 2. The outer walls of the movable frame 7 are connected to the upper surface of the fixed frame 2 via a reinforcement mechanism. A fixed plate 9 is fixedly mounted on the inner wall of the movable frame 7. A threaded rod 10 is rotatably mounted between the movable frame 7 and the fixed plate 9. A motor 11 connected to the threaded rod 10 is fixedly mounted on the bottom wall of the fixed plate 9. A limit rod 12 is fixedly mounted between the movable frame 7 and the fixed plate 9. The threaded rod 10 is threaded onto its outer wall. There is a movable sleeve 13, and a limiting rod 12 slides through the movable sleeve 13. The limiting rod 12 can restrict the movable sleeve 13, so that the movable sleeve 13 can only move axially along the outer wall of the threaded rod 10. Both outer walls of the movable sleeve 13 are fixedly installed with connecting sleeves 15 through connecting mechanisms. Connecting rods 16 are slidably installed inside the two connecting sleeves 15. Push plates 17 are fixedly installed at the ends of the two connecting rods 16. Fixing pins 18 slide through the outer walls of the two connecting sleeves 15. Insertion holes that cooperate with the fixing pins 18 on the same side are opened on the outer walls of the two connecting rods 16. Toggle blocks 19 are fixedly installed at the ends of the two fixing pins 18. The inner walls of the two toggle blocks 19 are connected to the outer walls of the connecting sleeves 15 through fixing mechanisms.

[0025] Furthermore, the connecting mechanism includes a connecting block 4 fixedly installed at the end of the bolt 3, and the inner wall of the connecting block 4 is rotatably connected to the outer wall of the clamping plate 5.

[0026] Furthermore, the reinforcement mechanism includes a reinforcing rod 8 fixedly installed on the outer wall of the movable frame 7, with the end of the reinforcing rod 8 fixedly connected to the upper end face of the fixed frame 2.

[0027] Furthermore, the connecting mechanism includes a connecting rod 14 fixedly installed on the outer wall of the movable sleeve 13, and the end of the connecting rod 14 is fixedly connected to the inside of the connecting sleeve 15.

[0028] Furthermore, the fixing mechanism includes a fixing spring 20 installed on the outer wall of the fixing pin 18. The two ends of the fixing spring 20 are elastically connected to the inner wall of the lever block 19 and the outer wall of the connecting sleeve 15, respectively. The fixing spring 20 can fix the fixing pin 18, prevent the push plate 17 from falling out of the connecting sleeve 15, and increase the fixing effect.

[0029] Furthermore, protective pads 6 are fixedly installed on the inner walls of both clamping plates 5. Both protective pads 6 are made of rubber. Rubber material has good flexibility and elasticity. When the clamping plates 5 move closer to the brake caliper under the action of the bolts 3 and finally achieve tight clamping, the protective pads 6 are the first to come into contact with the surface of the brake caliper. The softness of the rubber material can effectively prevent the clamping plates 5 from causing scratches, wear and other damage to the brake caliper housing when in rigid contact. Whether it is a metal brake caliper housing or a brake caliper with a coating or other protective treatment on the surface, the protective pads 6 can play a buffering role to ensure the integrity of its surface.

[0030] In practical use, the working principle of this utility model is as follows:

[0031] When using this automotive brake caliper piston removal tool, first place the brake caliper inside the fixed frame 2. Then, rotate the bolts 3 on both sides. Since the bolts 3 are rotatably installed through the outer walls of the fixed frame 2, the bolts 3 will move into the fixed frame 2 under the action of the threads when they rotate. The ends of the bolts 3 are rotatably connected to the clamping plates 5 through the connecting blocks 4. Therefore, when the bolts 3 move, they will drive the clamping plates 5 to move closer to the brake caliper until the rubber protective pads 6 on the inner walls of the two clamping plates 5 are tightly attached to the brake caliper, thus firmly fixing the brake caliper in the fixed frame 2. The rubber protective pads 6 can prevent damage to the surface of the brake caliper during clamping. They can increase the friction between the clamping plates 5 and the brake caliper, making the brake caliper more firmly fixed in the fixed frame 2. This effectively prevents the brake caliper from being displaced due to the reaction force during the subsequent process of the push plate 17 pushing the piston, thus ensuring that the entire disassembly work can be carried out in a stable state, further improving the reliability and safety of the tool.

[0032] After the brake caliper is fixed, the motor 11 starts and drives the threaded rod 10 to rotate between the movable frame 7 and the fixed plate 9. The movable sleeve 13 is threaded onto the outer wall of the threaded rod 10, and the limiting rod 12 slides through the movable sleeve 13. The function of the limiting rod 12 is to restrict the rotation of the movable sleeve 13, so that when the threaded rod 10 rotates, the movable sleeve 13 can only move in a straight line along the limiting rod 12 and the threaded rod 10. When the movable sleeve 13 moves, it drives the connecting sleeve 15 to move through the cooperation of the connecting rod 14. The connecting sleeve 15 then drives the push plate 17 to approach the piston of the brake caliper through the cooperation of the connecting rod 16. The motor 11 continuously drives the threaded rod 10 to rotate, causing the moving sleeve 13 to drive the push plate 17 to continue moving towards the brake caliper piston. The push plate 17 will apply a thrust to the piston, smoothly pushing the piston out of the brake caliper cylinder, thereby completing the disassembly of the brake caliper piston. This also avoids damage to the brake caliper caused by traditional disassembly methods. When the push plate 17 wears out after long-term use and needs to be replaced, the lever 19 can be moved to move the fixing pin 18 out of the insertion hole, thereby releasing the fixing of the connecting rod 16. Then the push plate 17 can be pulled out for easy replacement.

[0033] The above are merely specific embodiments of this utility model, but the technical features of this utility model are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on this utility model to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of this utility model.

Claims

1. A tool for removing the piston from a brake caliper piston, comprising a worktable (1), characterized in that, The upper end face of the workbench (1) is fixedly installed with a fixed frame (2), both sides of the outer wall of the fixed frame (2) are rotatably penetrated and installed with bolts (3), both ends of the two bolts (3) are rotatably installed with clamping plates (5) through a connecting mechanism, the upper end face of the fixed frame (2) is fixedly installed with a moving frame (7), both sides of the outer wall of the moving frame (7) are connected with the upper end face of the fixed frame (2) through a reinforcing mechanism, the inner wall of the moving frame (7) is fixedly installed with a fixed plate (9), the inside of the moving frame (7) and the fixed plate (9) are rotatably installed with a threaded rod (10), the bottom wall of the fixed plate (9) is fixedly installed with a motor (11) connected with the threaded rod (10), the inside of the moving frame (7) and the fixed plate (9) are fixedly installed with a limiting rod (12), the outer wall of the threaded rod (10) is threadedly installed with a moving sleeve (13), the limiting rod (12) is slidably penetrated through the moving sleeve (13), both sides of the outer wall of the moving sleeve (13) are fixedly installed with a connecting sleeve (15) through a connecting mechanism, both the inside of the two connecting sleeves (15) are slidably installed with a connecting rod (16), the ends of the two connecting rods (16) are fixedly installed with a push plate (17) together, both the outer walls of the two connecting sleeves (15) are slidably penetrated through fixed pins (18), both the outer walls of the two connecting rods (16) are provided with insertion holes matched with the same side fixed pins (18), both the ends of the two fixed pins (18) are fixedly installed with a push block (19), both the inner walls of the two push blocks (19) are connected with the outer wall of the connecting sleeve (15) through a fixed mechanism.

2. The automobile brake caliper piston dismounting tool according to claim 1, characterized in that The connecting mechanism comprises a connecting block (4) fixedly installed at the end of the bolt (3), and the inner wall of the connecting block (4) is rotatably connected with the outer wall of the clamping plate (5).

3. The automotive brake caliper piston removal tool according to claim 2, wherein The reinforcing mechanism comprises a reinforcing rod (8) fixedly installed on the outer wall of the moving frame (7), and the end of the reinforcing rod (8) is fixedly connected with the upper end face of the fixed frame (2).

4. The automotive brake caliper piston removal tool according to claim 3, wherein The connecting mechanism comprises a connecting rod (14) fixedly installed on the outer wall of the moving sleeve (13), and the end of the connecting rod (14) is fixedly connected with the inside of the connecting sleeve (15).

5. The automotive brake caliper piston removal tool of claim 4, wherein, The fixed mechanism comprises a fixed spring (20) installed on the outer wall of the fixed pin (18), and both ends of the fixed spring (20) are elastically connected with the inner wall of the push block (19) and the outer wall of the connecting sleeve (15) respectively.

6. The automotive brake caliper piston removal tool of claim 5, wherein, Both the inner walls of the two clamping plates (5) are fixedly installed with protective pads (6), and both the protective pads (6) are made of rubber material.

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