Disc brake push cylinder mounting tool

By designing an integrated torque structure and connectors, the problem of connectors coming loose or being lost during use of the disc brake push cylinder installation fixture has been solved, achieving higher reliability and stability, and ensuring the accuracy of torque transmission and ease of operation.

CN224239488UActive Publication Date: 2026-05-15ZONGHENG TIANJIN SCI & TECH DEV CO LTD OF CHINA ACADEMY OF RAILWAY SCI +3
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ZONGHENG TIANJIN SCI & TECH DEV CO LTD OF CHINA ACADEMY OF RAILWAY SCI
Filing Date
2025-05-21
Publication Date
2026-05-15

AI Technical Summary

Technical Problem

Existing disc brake push cylinder installation fixtures are prone to problems such as connectors coming loose or being lost during use, affecting their reliability.

Method used

A disc brake push cylinder installation fixture was designed, including a torsion structure and a connector. The connector is rotatably connected to the torsion structure. The integrated insertion is achieved by adjusting the angle position to avoid the connector from protruding in the radial direction. The connector is inserted into the strip through hole at the second angle position to abut against the push cylinder. The tightening operation is carried out by using an external tool.

Benefits of technology

It improves the reliability of tooling, reduces the risk of accidental separation and loss of connecting parts, ensures the accuracy and stability of torque transmission, and enhances the convenience and efficiency of operation.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a disc brake push cylinder installation tool, and relates to the technical field of installation tools, the disc brake push cylinder installation tool comprises a torsion structure and a connecting piece, the torsion structure comprises a torsion piece used for being inserted into a disc brake push cylinder, a wrenching part arranged at one end of the torsion piece, and a containing groove formed in the other end of the torsion piece; the connecting piece is arranged in the containing groove and rotationally connected with the torsion piece, the connecting piece has a first angle position and a second angle position, the connecting piece can be inserted into the disc braking push cylinder along with the torsion structure when the connecting piece is located at the first angle position, and the connecting piece can be inserted into the disc braking push cylinder along with the torsion structure when the connecting piece is located at the second angle position. At least part of the connecting piece can be inserted into the strip-shaped through hole of the disc brake push cylinder and abuts against the disc brake push cylinder so as to be used for torque transmission. The connecting piece and the torsion structure are rotationally connected to form an integrated structure, so that the problem that the connecting piece and the torsion structure are accidentally separated is solved, the use reliability is guaranteed, and the risk that local tools are lost is reduced.
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Description

Technical Field

[0001] This utility model relates to the field of installation tool technology, and in particular to a disc brake push cylinder installation fixture. Background Technology

[0002] In disc brake systems, tightening the disc brake pusher onto the piston is a crucial assembly step, requiring a significant tightening torque (typically around 150 N·m), which varies depending on the disc brake model. Existing disc brake pushers typically have two symmetrical slotted holes on their walls for installation. To ensure accuracy and reliability in this process, specially designed installation fixtures are usually required. Existing installation fixtures generally consist of two independent components: a cylindrical fixture and a roller fixture. One end of the cylindrical fixture connects to a torque wrench; the other end can be inserted axially into the disc brake pusher and has a insertion hole. The roller fixture can be inserted radially into the slotted hole on the disc brake pusher and connects to the insertion hole on the cylindrical fixture. At this point, the roller fixture and the slotted hole on the disc brake pusher form a limiting position, allowing torque to be transmitted. Through the cascading action of the rod-shaped fixtures, the operator can rotate the disc brake pusher by turning the cylindrical fixture, thereby achieving the tightening process. Although this combination of fixtures can meet the tightening requirements to a certain extent, there are significant problems in actual use: (1) the rod-shaped fixtures are prone to coming out of the holes of the cylindrical fixtures during use, leading to operation interruption or failure; (2) since the cylindrical fixtures and rod-shaped fixtures are separate components, the cylindrical fixtures or rod-shaped fixtures are prone to being lost after multiple uses. Therefore, how to improve the reliability of the installation fixtures and reduce the risk of loss has become an urgent technical problem to be solved. Utility Model Content

[0003] In order to overcome the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is to provide a disc brake push cylinder installation fixture, which can improve the reliability of use and reduce the risk of loss.

[0004] The above-mentioned objective of this utility model can be achieved by the following technical solution: This utility model provides a disc brake push cylinder mounting fixture, comprising:

[0005] A torsion structure, the torsion structure including a torsion member for insertion into a disc brake push cylinder, a wrench portion disposed at one end of the torsion member, and a receiving groove disposed at the other end of the torsion member.

[0006] A connector is disposed in the receiving groove and rotatably connected to the torque member. The connector has a first angular position and a second angular position. When the connector is in the first angular position, the connector can be inserted into the disc brake push cylinder along with the torque structure. When the connector is in the second angular position, at least a portion of the connector can be inserted into the strip-shaped through hole of the disc brake push cylinder and abut against the disc brake push cylinder for torque transmission.

[0007] In a preferred embodiment of the present invention, the torque member includes a torque bar, the connecting member includes a connecting rod, and the connecting rod is rotatably connected to the torque bar.

[0008] In a preferred embodiment of this utility model, when the connecting rod is in the first angular position, the connecting rod is parallel to the torsion bar; when the connecting rod is in the second angular position, the connecting rod is perpendicular to the torsion bar.

[0009] In a preferred embodiment of the present invention, the receiving groove extends radially through the torsion bar, and the connecting rod is rotatably disposed in the receiving groove. When the connecting rod is in the second angle position, one or both ends of the connecting rod extend out of the receiving groove.

[0010] In a preferred embodiment of the present invention, the torsion structure further includes a rotating shaft disposed on the torsion bar, the rotating shaft passing through the receiving groove, and the connecting rod being rotatably connected to the torsion bar via the rotating shaft.

[0011] In a preferred embodiment of the present invention, the rotating shaft is detachably connected to the torsion bar.

[0012] In a preferred embodiment of the present invention, the connecting rod is provided with a limiting structure. When the connecting rod is in the second angle position, the connecting rod is engaged with the side edge of the strip-shaped through hole of the disc brake push cylinder through the limiting structure.

[0013] In a preferred embodiment of the present invention, the limiting structure includes at least one limiting groove disposed on the connecting rod, the limiting groove being used to engage with the side edge of the strip-shaped through hole of the disc brake push cylinder.

[0014] In a preferred embodiment of the present invention, the connecting rod includes a first abutting end face and a second abutting end face. When the connecting rod is in the second angle position, the first abutting end face and the second abutting end face respectively abut against the side edges of the two strip-shaped through holes of the disc brake push cylinder. The limiting groove is provided on both the first abutting end face and the second abutting end face.

[0015] In a preferred embodiment of the present invention, the torsion bar includes a top wrench end face, and the wrench portion includes a wrench insertion interface disposed on the top wrench end face.

[0016] The technical solution of this utility model has the following significant beneficial effects:

[0017] When using the disc brake push cylinder installation fixture of this utility model, the connecting piece is adjusted to a first angle position, allowing it to rotatably retract into the receiving groove of the torsion structure. This prevents the connecting piece from protruding from the torsion structure in the radial direction, allowing it to be inserted into the disc brake push cylinder along with the torsion structure. Then, the connecting piece is adjusted to a second angle position, allowing it to extend out of the torsion structure in the radial direction. At least a portion of the connecting piece can then be inserted into the slotted through-hole of the disc brake push cylinder and abut against it. At this point, an external tool can be used to rotate the torsion structure and the connecting piece via a wrench, thereby rotating the disc brake push cylinder and enabling the disassembly and assembly of the disc brake push cylinder. In this utility model, the connecting piece and the torsion structure are rotatably connected, forming an integrated structure. This prevents accidental separation of the connecting piece and the torsion structure during use, ensuring reliability. Furthermore, the connection between the connecting piece and the torsion structure reduces the risk of partial fixture loss. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] The accompanying drawings described herein are for illustrative purposes only and are not intended to limit the scope of this invention in any way. Furthermore, the shapes and proportions of the components in the drawings are merely illustrative to aid in understanding the invention and do not specifically limit the shapes and proportions of the components. Those skilled in the art, under the guidance of this invention, can select various possible shapes and proportions to implement this invention according to specific circumstances.

[0020] Figure 1 This is a three-dimensional structural diagram of one embodiment of the disc brake push cylinder mounting fixture of this utility model;

[0021] Figure 2 A structural diagram showing the disc brake push cylinder mounting fixture of this utility model in a first angular position;

[0022] Figure 3This is a structural diagram showing the disc brake push cylinder mounting fixture of this utility model in a second angular position.

[0023] The reference numerals in the above figures are as follows:

[0024] 10. Disc brake push cylinder;

[0025] 11. Strip-shaped through hole;

[0026] 100. Torsion structure;

[0027] 110. Torque components;

[0028] 120. Tightening part;

[0029] 130. Receiving tank;

[0030] 140. Rotation axis;

[0031] 200. Connecting parts;

[0032] 210. Connecting rod;

[0033] 220. Limiting groove. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] Please refer to the following: Figure 1 , Figure 2 and Figure 3 As shown, an embodiment of this utility model provides a disc brake push cylinder 10 mounting fixture, which includes a torque structure 100 and a connector 200. The torque structure 100 includes a torque member 110 for insertion into the disc brake push cylinder 10, a wrench portion 120 disposed at one end of the torque member 110, and a receiving groove 130 disposed at the other end of the torque member 110. The connector 200 is disposed in the receiving groove 130 and rotatably connected to the torque member 110. The connector 200 has a first angular position and a second angular position. When the connector 200 is in the first angular position, the connector 200 can be inserted into the disc brake push cylinder 10 along with the torque structure 100. When the connector 200 is in the second angular position, at least a portion of the connector 200 can be inserted into the strip-shaped through hole 11 of the disc brake push cylinder 10 and abut against the disc brake push cylinder 10 for torque transmission.

[0036] Overall, when the disc brake push cylinder 10 is installed and used, the connector 200 is adjusted to the first angle position so that the connector 200 can be rotatably stored in the receiving groove 130 of the torsion structure 100, preventing the connector 200 from protruding from the torsion structure 100 in the radial direction, so that the connector 200 can be inserted into the disc brake push cylinder 10 together with the torsion structure 100.

[0037] Then, the connector 200 is adjusted to the second angle position, so that the connector 200 can extend out of the torque structure 100 in the radial direction, so that at least part of the connector 200 can be inserted into the strip-shaped through hole 11 of the disc brake push cylinder 10 and abut against the disc brake push cylinder 10. At this time, an external tool can be used to drive the torque structure 100 and the connector 200 to rotate through the wrench part 120, and then the disc brake push cylinder 10 can be driven to rotate through the connector 200, thus realizing the disassembly and assembly operation of the disc brake push cylinder 10.

[0038] In this invention, the connector 200 is rotatably connected to the torque structure 100, forming an integral structure. This avoids accidental separation of the connector 200 and the torque structure 100 during use, ensuring reliability. Furthermore, the connection between the connector 200 and the torque structure 100 also reduces the risk of partial tooling loss.

[0039] In an embodiment of this utility model, the torque member 110 includes a torque bar, and the connector 200 includes a connecting rod 210, which is rotatably connected to the torque bar.

[0040] Designers can adjust the specific shape and structure of the torsion bar and connecting rod 210 according to the needs of use, and no specific restrictions are imposed here. For example, the torsion bar can be constructed as a column, and the connecting rod 210 can be constructed as a strip.

[0041] By designing the torsion bar as a column and the connecting rod 210 as a long strip, it is not only easier to process and manufacture, but also can effectively improve the structural strength and operational stability of the tooling. At the same time, the long strip connecting rod 210 is easier to insert into the strip-shaped through hole 11 of the disc brake push cylinder 10, ensuring the accuracy and reliability of the torsion transmission process.

[0042] In the embodiments of this utility model, such as Figure 2 In the embodiment shown, when the connecting rod 210 is in the first angular position, the connecting rod 210 is parallel to the torsion bar; as Figure 3 In the embodiment shown, when the connecting rod 210 is in the second angle position, the connecting rod 210 is perpendicular to the torsion bar.

[0043] By making the connecting rod 210 parallel to the torsion bar in the first angular position and perpendicular to the torsion bar in the second angular position, not only is the smooth switching of the connecting rod 210 between the insertion and working states ensured, but the convenience and accuracy of operation are also significantly improved.

[0044] Specifically, the parallel state facilitates the overall insertion of the disc brake push cylinder 10 installation fixture, reduces the radial dimension, and avoids interference problems. The vertical state ensures that the connecting rod 210 can be accurately inserted into the strip-shaped through hole 11 of the disc brake push cylinder 10 and abut against it, thereby achieving a stable torque transmission effect and ensuring the reliability and consistency of the assembly process.

[0045] Of course, designers can adjust the specific angles of the first and second angle positions according to the needs of use, and no specific restrictions are imposed here.

[0046] In an embodiment of this utility model, the receiving groove 130 passes through the torsion bar radially, and the connecting rod 210 is rotatably disposed in the receiving groove 130. When the connecting rod 210 is in the second angle position, one or both ends of the connecting rod 210 extend out of the receiving groove 130.

[0047] In one feasible embodiment, when the connecting rod 210 is in the second angle position, both ends of the connecting rod 210 extend out of the receiving groove 130. By having both ends of the connecting rod 210 extend out of the receiving groove 130, the two ends of the connecting rod 210 can respectively abut against the side edges of the two strip-shaped through holes 11 of the disc brake push cylinder 10, thereby achieving a multi-point transmission effect, which helps to disperse the magnitude of the force and avoid damage to the disc brake push cylinder 10.

[0048] In another feasible embodiment, when the connecting rod 210 is in the second angle position, one end of the connecting rod 210 extends out of the receiving groove 130. At this time, the connecting rod 210 and the torsion bar are approximately L-shaped. Furthermore, when the connecting rod 210 is in the first angle position, the connecting rod 210 can be retracted into the receiving groove 130.

[0049] By utilizing the receiving groove 130 to house the connecting rod 210, it is beneficial to reduce the overall radial dimension of the tooling, facilitate the insertion of the disc brake push cylinder 10, improve the space utilization and operational flexibility of the disc brake push cylinder 10 installation tooling, and enhance the fitting accuracy between the connecting rod 210 and the disc brake push cylinder 10, thereby improving assembly efficiency and stability.

[0050] In an embodiment of this utility model, the torsion structure 100 further includes a rotating shaft 140 disposed on the torsion bar, the rotating shaft 140 passing through the receiving groove 130, and the connecting rod 210 being rotatably connected to the torsion bar via the rotating shaft 140.

[0051] By setting a rotating shaft 140 that passes through the receiving groove 130 and rotatably connecting the connecting rod 210 to the torsion bar through the rotating shaft 140, the assembly process between the connecting rod 210 and the torsion bar is simplified, and the flexibility and stability of the connecting rod 210 when switching between different angle positions are ensured.

[0052] In this embodiment of the invention, the rotating shaft 140 is detachably connected to the torsion bar. Specifically, a threaded section is provided at the end of the rotating shaft 140, and the rotating shaft 140 passes through the torsion bar and is rotatably connected to the torsion bar via a nut. Furthermore, a washer can be provided between the nut and the torsion bar.

[0053] By making the rotating shaft 140 detachably connected to the torsion bar, assembly and maintenance are facilitated, and the rotating shaft 140 can be quickly replaced or adjusted according to actual usage needs, improving the flexibility and adaptability of the tooling. Furthermore, placing a washer between the nut and the torsion bar effectively disperses pressure, reduces wear caused by long-term use, thereby extending the tooling's service life and ensuring its stability and reliability during torque transmission.

[0054] In an embodiment of this utility model, a limiting structure is provided on the connecting rod 210. When the connecting rod 210 is in the second angle position, the connecting rod 210 is engaged with the side edge of the strip-shaped through hole 11 of the disc brake push cylinder 10 through the limiting structure.

[0055] By setting a limiting structure on the connecting rod 210, when the connecting rod 210 is in the second angle position, the connecting rod 210 can be precisely engaged with the side edge of the strip-shaped through hole 11 of the disc brake push cylinder 10 through the limiting structure, which effectively avoids the loosening or falling off of the connecting rod 210 during the torque transmission process, and significantly improves the connection stability between the tooling and the disc brake push cylinder 10, thereby ensuring the accuracy and reliability of torque transmission.

[0056] In an embodiment of this utility model, the limiting structure includes at least one limiting groove 220 disposed on the connecting rod 210, the limiting groove 220 being used to engage with the side edge of the strip-shaped through hole 11 of the disc brake push cylinder 10.

[0057] By setting a limiting groove 220 on the connecting rod 210 as a limiting structure, the limiting groove 220 has a simple structure and is easy to process, which further improves the overall practicality and assembly efficiency of the tooling.

[0058] Specifically, the connecting rod 210 includes a first abutting end face and a second abutting end face. When the connecting rod 210 is in the second angle position, the first abutting end face and the second abutting end face respectively abut against the side edges of the two strip-shaped through holes 11 of the disc brake push cylinder 10. A limiting groove 220 is provided on both the first abutting end face and the second abutting end face.

[0059] By providing limiting grooves 220 on both the first and second abutting end faces of the connecting rod 210, the connecting rod 210 can form a double engagement with the side edges of the two strip-shaped through holes 11 of the disc brake push cylinder 10 when it is in the second angle position. This not only enhances the positioning accuracy and stability between the connecting rod 210 and the disc brake push cylinder 10 and effectively prevents possible offset or slippage during torque transmission, but also further improves the reliability and efficiency of torque transmission.

[0060] In an embodiment of this utility model, the torsion bar includes a top wrench end face, and the wrench part 120 includes a wrench insertion interface disposed on the top wrench end face.

[0061] By providing a wrenching interface on the top wrenching end face of the torsion bar, users can easily use external tools (such as wrenches or special connectors) to perform torque transmission operations, thereby simplifying the operation steps, improving work efficiency, and ensuring the stability and accuracy of torque application.

[0062] Of course, in other feasible embodiments, the designer may adjust the specific structure of the wrench 120 according to the needs of use, and no specific limitations are made here. For example, the wrench 120 may be a protrusion provided on the top wrench end face.

[0063] All articles and references disclosed herein, including patent applications and publications, are incorporated herein by reference for various purposes. The term “substantially constitutes…” used to describe a combination should include the identified element, component, part, or step, as well as other elements, components, parts, or steps that do not substantially affect the essential novelty of the combination. The use of the terms “comprising” or “including” to describe combinations of elements, components, parts, or steps herein also contemplates embodiments substantially constituted by such elements, components, parts, or steps. The use of the term “may” herein is intended to indicate that any described attribute “may” include is optional. Multiple elements, components, parts, or steps can be provided by a single integrated element, component, part, or step. Alternatively, a single integrated element, component, part, or step can be divided into multiple separate elements, components, parts, or steps. The disclosure of “a” or “an” used to describe an element, component, part, or step does not imply exclusion of other elements, components, parts, or steps.

[0064] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A disc brake push cylinder mounting fixture, characterized in that, include: A torsion structure, the torsion structure including a torsion member for insertion into a disc brake push cylinder, a wrench portion disposed at one end of the torsion member, and a receiving groove disposed at the other end of the torsion member. A connector is disposed in the receiving groove and rotatably connected to the torque member. The connector has a first angular position and a second angular position. When the connector is in the first angular position, the connector can be inserted into the disc brake push cylinder along with the torque structure. When the connector is in the second angular position, at least a portion of the connector can be inserted into the strip-shaped through hole of the disc brake push cylinder and abut against the disc brake push cylinder for torque transmission.

2. The disc brake push cylinder mounting fixture as described in claim 1, characterized in that, The torsion member includes a torsion bar, and the connecting member includes a connecting rod, which is rotatably connected to the torsion bar.

3. The disc brake push cylinder mounting fixture as described in claim 2, characterized in that, When the connecting rod is in the first angular position, the connecting rod is parallel to the torsion bar; when the connecting rod is in the second angular position, the connecting rod is perpendicular to the torsion bar.

4. The disc brake push cylinder mounting fixture as described in claim 2, characterized in that, The receiving groove extends radially through the torsion bar, and the connecting rod is rotatably disposed in the receiving groove. When the connecting rod is in the second angle position, one or both ends of the connecting rod extend out of the receiving groove.

5. The disc brake push cylinder mounting fixture as described in claim 2, characterized in that, The torsion structure also includes a rotating shaft disposed on the torsion bar, the rotating shaft passing through the receiving groove, and the connecting rod being rotatably connected to the torsion bar through the rotating shaft.

6. The disc brake push cylinder mounting fixture as described in claim 5, characterized in that, The rotating shaft is detachably connected to the torsion bar.

7. The disc brake push cylinder mounting fixture as described in claim 2, characterized in that, The connecting rod is provided with a limiting structure. When the connecting rod is in the second angle position, the connecting rod is engaged with the side edge of the strip-shaped through hole of the disc brake push cylinder through the limiting structure.

8. The disc brake push cylinder mounting fixture as described in claim 7, characterized in that, The limiting structure includes at least one limiting groove disposed on the connecting rod, the limiting groove being used to engage with the side edge of the strip-shaped through hole of the disc brake push cylinder.

9. The disc brake push cylinder mounting fixture as described in claim 8, characterized in that, The connecting rod includes a first abutting end face and a second abutting end face. When the connecting rod is in the second angle position, the first abutting end face and the second abutting end face respectively abut against the side edges of the two strip-shaped through holes of the disc brake push cylinder. The limiting groove is provided on both the first abutting end face and the second abutting end face.

10. The disc brake push cylinder mounting fixture as described in claim 2, characterized in that, The torsion bar includes a top wrench end face, and the wrench portion includes a wrench insertion interface disposed on the top wrench end face.