A service tool and compressed brake master cylinder

Abstract

This utility model belongs to the technical field of automotive pump body repair equipment, and provides a repair tool and a compression brake caliper. The repair tool includes a compression screw, a positioning ring, a positioning nut, and a base. The positioning nut is welded to the inner surface of the positioning ring, the compression screw is threadedly connected to the positioning nut, and the base is connected to the end of the compression screw. This utility model's repair tool is adaptable to compression brake calipers. During repair, the repair tool is installed on the compression brake caliper, and then the compression screw is rotated, causing the base to move towards the cylinder of the compression brake caliper, forcing the piston into the cylinder. This process ensures even force distribution on the piston of the compression brake caliper, reduces the risk of damage to the rubber sealing sleeve, and lowers the risk of injury due to uncontrolled operation.

Description

Technical Field

[0001] This utility model belongs to the technical field of automotive pump body repair equipment, and specifically relates to a repair tool and a compression brake cylinder. Background Technology

[0002] In replacing disc brake pads, maintenance personnel typically need to use tools such as wrenches, screwdrivers, and pry bars to compress the brake calipers. However, traditional tools have significant drawbacks: slippage can easily occur when the tool contacts the caliper, which may not only cause accidental damage to the brake system's rubber seals due to uneven force, but also pose a risk of injury due to loss of control during operation. Utility Model Content

[0003] To address the problems in the background art, this utility model proposes a maintenance tool and a compression brake cylinder.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A maintenance tool includes a compression screw, a locating ring, a locating nut, and a base; The positioning nut is fixedly installed inside the positioning ring; The compression screw is threadedly connected to the positioning nut; The base is connected to the end of the compression screw.

[0005] Preferably, the positioning nut is welded to the inner surface of the positioning ring.

[0006] Preferably, the positioning ring is waist-shaped.

[0007] Preferably, the base includes a base plate and a sleeve; The sleeve is fixedly connected to the base plate; When the base is connected to the end of the compression screw, the sleeve is slidably fitted onto the end of the compression screw; Alternatively, when the base is connected to the end of the compression screw, the sleeve is threadedly connected to the end of the compression screw.

[0008] Preferably, the end of the compression screw away from the base is provided with an integrally connected hexagonal head.

[0009] Preferably, one surface of the positioning ring is provided with anti-slip texture; When the compression screw and the positioning nut are threaded together, the anti-slip texture faces or turns away from the base.

[0010] A compression brake caliper, wherein during maintenance, the compression brake caliper is equipped with one of the aforementioned maintenance tools, and the compression brake caliper includes a positioning plate, a connecting bracket, a cylinder body, and a piston; The connecting brackets are symmetrically installed at the ends of the cylinder body; The positioning plate is connected to the end of the connecting frame away from the cylinder body; The piston is slidably connected to the cylinder.

[0011] Preferably, the positioning plate has a through hole on its surface, and the diameter of the through hole is larger than the outer diameter of the thread of the compression screw.

[0012] Preferably, during maintenance: The positioning ring abuts against the surface of the positioning plate facing the cylinder. The compression screw passes through the positioning plate and is connected to the base; The base presses the piston down until the piston retracts into the cylinder.

[0013] Preferably, after the piston retracts into the cylinder, the surface of the base away from the compression screw abuts against the cylinder.

[0014] The beneficial effects of this utility model are: The repair tool of this utility model can be adapted to the compression brake caliper. During repair, the repair tool is installed on the compression brake caliper, and then the compression screw is rotated to move the base toward the cylinder of the compression brake caliper, so that the piston is squeezed into the cylinder. In this process, the piston of the compression brake caliper is subjected to uniform force, the rubber sealing sleeve is not easily damaged, and the risk of personnel injury caused by loss of control of operation can be reduced.

[0015] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention can be realized and obtained through the structures pointed out in the description and the accompanying drawings. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the compression screw and positioning ring of this utility model is shown; Figure 2 A schematic diagram of the positioning ring and positioning nut of this utility model is shown; Figure 3 A schematic diagram of the base of this utility model is shown; Figure 4The diagram shows the structure of the maintenance tool of this utility model after it is used in conjunction with the compression brake cylinder.

[0018] In the diagram: 1. Compression screw; 2. Positioning ring; 3. Positioning nut; 4. Base; 401. Base plate; 402. Sleeve; 5. Positioning plate; 6. Connecting frame; 7. Cylinder body; 8. Piston. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0020] like Figures 1-3 As shown, a maintenance tool includes a compression screw 1, a positioning ring 2, a positioning nut 3, and a base 4. The positioning nut 3 is welded to the inner surface of the positioning ring 2, the compression screw 1 is threadedly connected to the positioning nut 3, and the base 4 is connected to the end of the compression screw 1.

[0021] like Figure 1 As shown, the compression screw 1 can be made of high-strength alloy steel, with one end machined into a hexagonal head for easy operation with a wrench. The outer surface of the screw is machined with standard threads, the thread specification of which is determined according to actual maintenance needs to ensure proper fit with the positioning nut 3.

[0022] like Figure 2 As shown, the positioning ring 2 adopts an oblong design, is made of 45# steel, and is formed by stamping and then surface treated. Anti-slip textures are machined on one side of its surface using a knurling process. The positioning nut 3 is firmly fixed to the inner surface of the positioning ring 2 by welding. During welding, it is ensured that the center of the positioning nut 3 coincides with the central axis of the positioning ring 2 to guarantee the coaxiality of the compression screw 1 after installation.

[0023] Another optional implementation is as follows: the positioning ring 2 is made by bending a section of φ8mm steel bar into a waist shape with the dimensions of the waist shape being 150mm on the major axis and 35mm on the minor axis. Then, the positioning nut 3 is welded to the center of the waist shape, and then the compression screw 1 (150mm in length) that matches the positioning nut 3 is used to assemble it.

[0024] like Figure 3As shown, the base 4 consists of a base plate 401 and a sleeve 402. The base plate 401 can be made of a waist-shaped steel plate (70mm major axis, 50mm minor axis), with its thickness determined according to load-bearing requirements to ensure sufficient strength and stability. The sleeve 402 is a hollow cylindrical tube (15mm high) that is vertically fixed to the base plate 401 by welding. In this embodiment, the sleeve 402 is threaded to the end of the compression screw 1, and an internal thread matching the external thread of the compression screw 1 is machined on the inner surface of the sleeve 402.

[0025] Another alternative implementation is that the sleeve 402 is slidably sleeved with the end of the compression screw 1.

[0026] like Figure 4 As shown, a compression brake caliper includes a positioning plate 5, a connecting bracket 6, a cylinder 7, and a piston 8. The connecting bracket 6 has a symmetrical structure and is welded to the end face of the cylinder 7. The positioning plate 5 can be made of rectangular steel plate and is connected to the end of the connecting bracket 6 away from the cylinder 7 by welding. A through hole is machined on the surface of the positioning plate 5, the diameter of which is larger than the outer diameter of the thread of the compression screw 1, so that the compression screw 1 can pass through smoothly. The piston 8 is slidably connected to the cylinder 7 and can move back and forth within the cylinder 7 to perform the functions of compressing and releasing brake fluid.

[0027] Alternatively, the through hole on the surface of the positioning plate 5 can be replaced with a threaded hole, and the compression screw 1 can mate with the threaded hole.

[0028] The following explains the operating principle of maintenance tools in compression brake calipers: When repairing a car's compression brake caliper, first place the locating ring 2 on the surface of the locating plate 5 facing the cylinder 7, ensuring the anti-slip texture of the locating ring 2 abuts against the locating plate 5 to increase friction and prevent slippage during repair. Then, pass the compression screw 1 through the through hole on the locating plate 5 and screw it into the locating nut 3. Tighten the compression screw 1 using a hex wrench. Next, screw the sleeve 402 of the base 4 onto the threaded end of the compression screw 1 to secure the connection. Continue rotating the compression screw 1. As the screw rotates, the base 4 gradually moves closer to the piston 8. Once the base 4 contacts the piston 8, apply continuous torque. The base 4 exerts pressure on the piston 8, pushing it back into the cylinder 7. When the piston 8 is fully retracted into the cylinder 7, the surface of the base 4 away from the compression screw 1 abuts against the cylinder 7. This completes the piston 8 retraction operation, allowing subsequent brake caliper repair work to proceed, such as replacing seals and inspecting the internal wear of the cylinder 7.

[0029] It should be noted that if the sleeve 402 and the compression screw 1 are slidably sleeved, the base 4 can be placed at the end of the piston 8, and then the compression screw 1 and the sleeve 402 are engaged and pressed against the base plate 401. After that, the compression screw 1 is rotated to apply torque, and the base 4 generates pressure on the piston 8, pushing the piston 8 back into the cylinder 7.

[0030] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A repair tool, characterized in that, Includes a compression screw (1), a positioning ring (2), a positioning nut (3), and a base (4); The positioning nut (3) is fixedly installed inside the positioning ring (2); The compression screw (1) is threadedly connected to the positioning nut (3); The base (4) is connected to the end of the compression screw (1).

2. A repair tool according to claim 1, characterized in that, The positioning nut (3) is welded to the inner surface of the positioning ring (2).

3. A repair tool according to claim 1, characterized in that, The positioning ring (2) is waist-shaped.

4. A repair tool according to claim 1, characterized in that, The base (4) includes a base plate (401) and a sleeve (402). The sleeve (402) is fixedly connected to the base plate (401); When the base (4) is connected to the end of the compression screw (1), the sleeve (402) is slidably sleeved on the end of the compression screw (1); Alternatively, when the base (4) is connected to the end of the compression screw (1), the sleeve (402) is threadedly connected to the end of the compression screw (1).

5. A repair tool according to claim 1, characterized in that, The end of the compression screw (1) away from the base (4) is provided with an integrally connected hexagonal head.

6. A repair tool according to claim 1, characterized in that, The positioning ring (2) has anti-slip texture on one surface; When the compression screw (1) and the positioning nut (3) are threaded together, the anti-slip texture faces or turns away from the base (4).

7. A compression brake cylinder, characterized in that, During maintenance, the compression brake caliper is equipped with a maintenance tool as described in any one of claims 1-6, and the compression brake caliper includes a positioning plate (5), a connecting bracket (6), a cylinder body (7), and a piston (8). The connecting bracket (6) is symmetrically installed at the end of the cylinder body (7); The positioning plate (5) is connected to the end of the connecting frame (6) away from the cylinder body (7); The piston (8) is slidably connected to the cylinder (7).

8. A compression brake cylinder according to claim 7, characterized in that, The positioning plate (5) has a through hole on its surface, and the diameter of the through hole is larger than the outer diameter of the thread of the compression screw (1).

9. A compression brake cylinder according to claim 7, characterized in that, During maintenance: The positioning ring (2) abuts against the surface of the positioning plate (5) facing the cylinder (7); The compression screw (1) passes through the positioning plate (5) and is connected to the base (4); The base (4) presses the piston (8) until the piston (8) retracts into the cylinder (7).

10. A compression brake cylinder according to claim 9, characterized in that, After the piston (8) retracts into the cylinder (7), the surface of the base (4) away from the compression screw (1) abuts against the cylinder (7).

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