Brake master cylinder assembling and positioning tool
By designing a positioning fixture for assembling the brake master cylinder, and utilizing a combination structure of a base plate, positioning block, and pressure block, the problems of low assembly efficiency and incomplete installation were solved, achieving a highly efficient and accurate assembly process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 安思通(厦门)制动科技有限公司
- Filing Date
- 2025-05-23
- Publication Date
- 2026-05-19
AI Technical Summary
The existing technology for brake master cylinders has low assembly efficiency and is prone to problems with improper installation.
A brake master cylinder assembly and positioning fixture was designed, including a base plate, positioning block, side pressure block and straight pressure block. The oil cup and pump body are quickly positioned and pressed by the side positioning groove, arc groove and vertical movement.
It improves assembly efficiency, ensures the accuracy and consistency of installation, and simplifies the operation process.
Smart Images

Figure CN224255202U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of positioning tooling technology, and more specifically, to a positioning tooling for assembling a brake master cylinder. Background Technology
[0002] The brake master cylinder, also known as the "brake master cylinder" or "brake master pump," is a key component of the vehicle's braking system. Depending on the vehicle, it is classified into two types: air brake master cylinders and hydraulic brake master cylinders. Generally, passenger vehicles (such as sedans and minivans) mostly use hydraulic brake master cylinders. Figure 1-2 The hydraulic brake master cylinder shown consists of a pump body and an oil cup. The oil cup is installed on the upper end of the pump body and then a pin is inserted for fixed connection. Traditionally, the pump body and oil cup are assembled manually, which is inefficient and prone to improper installation. Utility Model Content
[0003] This utility model provides a brake master cylinder assembly and positioning fixture, which aims to improve the technical problems of low installation efficiency and incomplete installation in the existing manual assembly of hydraulic brake master cylinders.
[0004] To achieve the above objectives, the present invention adopts the following technical solution: a brake master cylinder assembly and positioning fixture, comprising a base plate, a positioning block provided on the base plate, the positioning block having a side positioning groove, a side pressing block movably provided on one side of the side positioning groove on the base plate, the side pressing block having an arc-shaped groove, and a straight pressing block movably provided above the positioning block, the straight pressing block moving up and down in the vertical direction.
[0005] Furthermore, a side pressure cylinder and a slide rail are further provided on the base plate, the piston rod of the side pressure cylinder is connected to the side pressure block, and the side pressure block is installed on the slide rail.
[0006] Furthermore, a U-shaped frame is provided on the base plate, and a pressing cylinder is installed on the frame. The piston rod of the pressing cylinder is provided with a straight pressing block.
[0007] Furthermore, support blocks are provided on both sides of the slide rail on the base plate, and the side pressure blocks are slidably disposed on the two support blocks.
[0008] Furthermore, a baffle is provided on the side of the positioning block away from the side pressure block.
[0009] Furthermore, the positioning block is further provided with a strip groove and a semi-circular notch.
[0010] Furthermore, the side pressure block has two circular grooves.
[0011] Compared with the prior art, the beneficial effects of this utility model are:
[0012] This utility model discloses a brake master cylinder assembly and positioning fixture with a simple and ingenious design. It includes a base plate with a positioning block on it. The positioning block has a side positioning groove. A side pressure block is movably positioned on one side of the side positioning groove on the base plate. The side pressure block has an arc-shaped groove. A straight pressure block is movably positioned above the positioning block and moves vertically up and down. In use, the oil cup is placed in the side positioning groove, and the pump body is placed in the arc-shaped groove. The oil cup's connector is aligned with the pump body's connector. Moving the side pressure block pushes the pump body closer and presses it against the oil cup. Then, a pin is placed at the connection between the oil cup and the pump body. The straight pressure block is then pressed down to connect the two parts. This utility model quickly positions the oil cup and pump body through the side positioning groove and arc-shaped groove, and then achieves two-way pressing through the side pressure block and straight pressure block. Operation is simple and convenient, improving processing efficiency while ensuring proper installation. Attached Figure Description
[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.
[0014] Figure 1 This is a schematic diagram of the brake master cylinder structure;
[0015] Figure 2 This is an exploded structural diagram of the brake master cylinder;
[0016] Figure 3 This is a schematic diagram of the overall structure of the brake master cylinder assembly and positioning fixture of this utility model;
[0017] Figure 4 This is a schematic diagram of the positioning block and side pressure block structure of the brake master cylinder assembly and positioning fixture of this utility model.
[0018] Explanation of main component symbols
[0019] 10. Base plate;
[0020] 20. Positioning block; 201. Side positioning groove; 202. Baffle;
[0021] 30. Side pressure block; 301. Arc groove; 302. Slide rail; 303. Side pressure cylinder; 304. Support block;
[0022] 40. Direct pressure block; 401. Frame; 402. Downward pressure cylinder;
[0023] 50. Brake master cylinder; 501. Oil cup; 502. Pump body; 503. Pin. Detailed Implementation
[0024] 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 a part of the embodiments of this utility model, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.
[0025] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0026] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0027] Example
[0028] Reference Figure 1-4As shown, this utility model discloses a positioning fixture for assembling a brake master cylinder 50, including a base plate 10. A positioning block 20 is provided on the base plate 10. The positioning block 20 has a side positioning groove 201 for placing a positioning oil cup 501, so that the insertion pipe of the oil cup 501 faces the side pressure block 30. Furthermore, the positioning block 20 has a strip groove and a semi-circular notch. The semi-circular notch is used to place the oil inlet pipe of the oil cup 501, and the strip groove is used to place the ribs on the side of the oil cup 501, so that the side positioning groove 201 fits the oil cup 501 more closely and prevents the oil cup 501 from shifting during the assembly process.
[0029] Reference Figure 1-4 As shown, the base plate 10 has a movable side pressure block 30 on one side of the side positioning groove 201. The side pressure block 30 has an arc-shaped groove 301. The pump body 502 is cylindrical. The arc-shaped groove 301 is used to place the pump body 502. Furthermore, the side pressure block 30 has two circular grooves. The two circular grooves are used to place the two protrusions of the pump body 502, further positioning the pump body 502.
[0030] Reference Figure 1-4 As shown, a side pressure cylinder 303 and a slide rail 302 are further provided on the base plate 10. The piston rod of the side pressure cylinder 303 is connected to the side pressure block 30. The side pressure block 30 is installed on the slide rail 302. After positioning the oil cup 501 and the pump body 502, the side pressure cylinder 303 is controlled to push the side pressure block 30 to move along the slide rail 302 so that the side pressure block 30 approaches or leaves the positioning block 20, that is, presses the pump body 502 into the oil cup 501.
[0031] In addition, a baffle 202 is provided on the side of the positioning block 20 away from the side pressure block 30. When the side pressure block 30 presses the pump body 502 against the oil cup 501, it exerts pressure on the positioning block 20 to prevent the positioning block 20 from loosening and shifting due to prolonged pushing.
[0032] Reference Figure 1-4 As shown, a movable pressure block 40 is installed above the positioning block 20, and the pressure block 40 moves vertically up and down. Specifically, a U-shaped frame 401 is installed on the base plate 10, and a pressing cylinder 402 is installed on the frame 401. The piston rod of the pressing cylinder 402 is connected to the pressure block 40. After the pump body 502 is pressed against the oil cup 501, the pin 503 is manually placed vertically at the connection between the oil cup 501 and the pump body 502. The pressing cylinder 402 is controlled to push the pressure block 40 to press the pin 503 into place between the oil cup 501 and the pump body 502, thus achieving the effect of automatically pressing the pin 503.
[0033] Furthermore, support blocks 304 are provided on both sides of the slide rail 302 on the base plate 10, and the side pressure blocks 30 are slidably arranged on the two support blocks 304. Since the side pressure blocks 30 will bear some pressure when the straight pressure block 40 presses down on the pin 503, and the track has poor pressure bearing capacity, the two support blocks 304 play a supporting and protective role for the side pressure blocks 30.
[0034] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A positioning fixture for assembling a brake master cylinder, characterized in that; The device includes a base plate, on which a positioning block is provided. The positioning block has a side positioning groove. A side pressing block is movably provided on one side of the side positioning groove on the base plate. The side pressing block has an arc-shaped groove. A straight pressing block is movably provided above the positioning block. The straight pressing block moves up and down in the vertical direction.
2. The brake master cylinder assembly and positioning fixture according to claim 1, characterized in that: A side-pressure cylinder and a slide rail are further provided on the base plate. The piston rod of the side-pressure cylinder is connected to the side-pressure block, and the side-pressure block is installed on the slide rail.
3. The brake master cylinder assembly and positioning fixture according to claim 1, characterized in that: A U-shaped frame is provided on the base plate, and a downward pressure cylinder is installed on the frame. The piston rod of the downward pressure cylinder is provided with a direct pressure block.
4. The brake master cylinder assembly and positioning fixture according to claim 2, characterized in that: Support blocks are provided on both sides of the slide rail on the base plate, and the side pressure blocks are slidably disposed on the two support blocks.
5. The brake master cylinder assembly and positioning fixture according to claim 1, characterized in that: A baffle is provided on the side of the positioning block away from the side pressure block.
6. The brake master cylinder assembly positioning fixture according to claim 1, characterized in that: The positioning block is further provided with a strip groove and a semi-circular notch.
7. The brake master cylinder assembly and positioning fixture according to claim 1, characterized in that: The side pressure block has two circular grooves.