Self-adjusting hydraulic brake pump

Abstract

This utility model relates to the field of automotive brake pump technology, specifically a self-adjusting hydraulic brake pump, including a pump body. A push rod is slidably connected to the pump body, and a hinge seat is sleeved on the push rod. The push rod has multiple symmetrically arranged limiting grooves. A locking mechanism is provided on one side of the hinge seat. The locking mechanism includes a mounting ring, a movable ring threadedly connected to the mounting ring, a symmetrically arranged connecting rod fixedly connected to one side of the movable ring, symmetrically arranged limiting blocks slidably connected to the mounting ring, and pressure blocks fixedly connected to one side of each limiting block. A spring is fixedly connected to each pressure block position inside the mounting ring. The movable block is slidably connected to the mounting ring. The beneficial effect of this utility model is that, compared to the traditional threaded fixing method, the limiting blocks have a longer service life, which allows the hinge seat to maintain a stable position during long-term use, thus avoiding the problem of hinge seat shaking caused by thread damage.

Description

Technical Field

[0001] This utility model relates to the field of automotive brake pump technology, specifically a self-adjusting hydraulic brake pump. Background Technology

[0002] The self-adjusting hydraulic brake pump is a key component of modern automotive braking systems. The piston of the brake pump is tightly fitted with a sealing ring, which is installed inside the pump housing. During braking, the piston moves under the action of the push rod, and the sealing ring undergoes slight elastic deformation under the action of piston friction. The deformability of the sealing ring enables the brake pump to have a self-adjusting compensation function, which can maintain a high sealing performance at the connection between the sealing ring on the piston and the inner wall of the pump housing.

[0003] In existing technology, the pump body push rod is usually connected to a hinge seat, which is used to connect with the brake transmission assembly. Currently, the position of the hinge seat is fixed by the thread on the push rod and the hexagonal bolt. However, during the frequent use of the hinge seat, the threads on the push rod are prone to wear due to the need to withstand the pressure transmitted by the brake transmission assembly for a long time. Once the threads wear, the connection between the hinge seat and the push rod will become loose, which will affect the normal operation of the car's braking function. Utility Model Content

[0004] The purpose of this invention is to provide a self-adjusting hydraulic brake pump to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a self-adjusting hydraulic brake pump, comprising a pump body, wherein a push rod is slidably connected to the pump body, and a hinge seat is sleeved on the push rod;

[0006] The push rod has multiple symmetrically arranged limiting grooves. The hinge seat has a locking mechanism on one side. The locking mechanism includes a mounting ring. A movable ring is threaded onto the mounting ring. A symmetrically arranged connecting rod is fixedly connected to one side of the movable ring. A symmetrically arranged limiting block is slidably connected onto the mounting ring. A pressure block is fixedly connected to one side of each limiting block. A spring is fixedly connected to the inside of the mounting ring at the position corresponding to the pressure block. A movable block is slidably connected onto the mounting ring. A support ring is fixedly connected to the movable block. A compression ring is fixedly connected to one side of the support ring. A connecting groove is formed on the other side wall of the support ring.

[0007] Preferably, the mounting ring is fixedly connected to one side of the hinge seat, and the movable ring is provided with multiple leverage grooves.

[0008] Preferably, one end of each limiting block is triangular, each pressure block is slidably connected inside the mounting ring, and each pressure block is fixedly connected to a corresponding spring.

[0009] Preferably, all the connecting rods are slidably connected inside the connecting groove.

[0010] Preferably, the inner diameter of the extrusion ring is larger than the outer diameter of the mounting ring.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: by adopting a locking mechanism, the hinge seat can be fixed on the push rod directly by using the limiting block and the limiting groove on the push rod. When the hinge seat is subjected to force, the limiting block and the limiting groove can provide effective support for it. Compared with the traditional threaded fixing method, the service life of the limiting block is longer, which allows the hinge seat to always maintain a stable position during long-term use, thereby avoiding the problem of hinge seat shaking caused by thread damage. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the separation structure of the mounting ring and push rod of this utility model;

[0014] Figure 3 This is a schematic diagram of the locking mechanism of this utility model, shown in sectional view.

[0015] In the diagram: 1. Pump body; 2. Push rod; 3. Hinge seat; 4. Limiting groove; 5. Locking mechanism; 51. Mounting ring; 52. Moving ring; 53. Linking rod; 54. Limiting block; 55. Pressing block; 56. Spring; 57. Moving block; 58. Support ring; 59. Extrusion ring; 501. Linking groove. Detailed Implementation

[0016] 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.

[0017] Please see Figure 1-3 The present invention provides the following technical solution:

[0018] Example 1: A self-adjusting hydraulic brake pump includes a pump body 1, a push rod 2 slidably connected to the pump body 1, and a hinge seat 3 sleeved on the push rod 2;

[0019] During use, the brake transmission assembly is hinged to the hinge seat 3. During the braking process, the hinge seat 3 is driven by the force of the transmission assembly to slide the push rod 2 into the pump body 1. The push rod 2 drives the piston and the sealing ring to generate hydraulic pressure, so that the brake pads of the car fit against the brake disc drum and generate braking force.

[0020] Example 2: The technical solution of this example, which differs from that of Example 1, includes: a plurality of symmetrically arranged limiting grooves 4 on the push rod 2; a locking mechanism 5 on one side of the hinge seat 3; the locking mechanism 5 includes a mounting ring 51; a movable ring 52 is threadedly connected to the mounting ring 51; a symmetrically arranged connecting rod 53 is fixedly connected to one side of the movable ring 52; symmetrically arranged limiting blocks 54 are slidably connected to the mounting ring 51; a pressure block 55 is fixedly connected to one side of each limiting block 54; a spring 56 is fixedly connected to the inside of the mounting ring 51 at the position corresponding to the pressure block 55; a movable block 57 is slidably connected to the mounting ring 51; a support ring 58 is fixedly connected to the movable block 57; a compression ring 59 is fixedly connected to one side of the support ring 58; and a connecting groove 501 is opened on the other side wall of the support ring 58.

[0021] The mounting ring 51 is fixedly connected to one side of the hinge seat 3. The moving ring 52 has multiple leverage grooves. One end of the limiting block 54 is triangular. The pressure block 55 is slidably connected inside the mounting ring 51. The pressure block 55 is fixedly connected to the corresponding spring 56. The connecting rod 53 is slidably connected inside the connecting groove 501. The inner diameter of the extrusion ring 59 is larger than the outer diameter of the mounting ring 51.

[0022] In use, the hinge seat 3 and the mounting ring 51 can be fitted onto the push rod 2, so that the limiting block 54 on the mounting ring 51 corresponds to the limiting groove 4 at a certain point on the push rod 2. At this time, an external tool can be inserted into the lever groove to rotate the moving ring 52. While rotating the moving ring 52, the hinge seat 3 needs to be locked to fix its position. Then, the moving ring 52 will move along the mounting ring 51 towards the hinge seat 3 via the thread. The movement of the moving ring 52 will drive the two connecting rods 53 to rotate and move. The connecting rods 53 will rotate inside the connecting groove 501 and push the support ring 58 to move together through the connecting groove 501. The support ring 58 will drive the moving block 57 to move on the mounting ring 51. The movement of ring 58 will also drive the compression ring 59 to move towards the hinge seat 3. When the compression ring 59 moves, its inner wall will compress the triangular position of the limiting block 54. At this time, the limiting block 54 will retract into the mounting ring 51 under pressure. At the same time, the retraction of the limiting block 54 will drive the pressure block 55 to move. The movement of the pressure block 55 will compress and contract the spring 56. When the compression ring 59 moves and wraps around the two limiting blocks 54, the limiting blocks 54 have been inserted into the limiting groove 4 on the push rod 2. At this time, the hinge seat 3 is fixed, and the force on the hinge seat 3 is borne by the two limiting blocks 54 and the limiting groove 4. It will not act on the thread between the mounting ring 51 and the moving ring 52, thus improving the positional stability of the hinge seat 3.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A self-adjusting hydraulic brake pump, comprising a pump body (1), wherein a push rod (2) is slidably connected to the pump body (1), and a hinge seat (3) is sleeved on the push rod (2). Its features are: The push rod (2) has a plurality of symmetrically arranged limiting grooves (4). The hinge seat (3) has a locking mechanism (5) on one side. The locking mechanism (5) includes an installation ring (51). A moving ring (52) is threaded onto the installation ring (51). A symmetrically arranged connecting rod (53) is fixedly connected to one side of the moving ring (52). A symmetrically arranged limiting block (54) is slidably connected onto the installation ring (51). A pressure block (55) is fixedly connected to one side of each limiting block (54). A spring (56) is fixedly connected to the inside of the installation ring (51) at the position corresponding to the pressure block (55). A moving block (57) is slidably connected onto the installation ring (51). A support ring (58) is fixedly connected onto the moving block (57). A compression ring (59) is fixedly connected to one side of the support ring (58). A connecting groove (501) is opened on the other side wall of the support ring (58).

2. The self-adjusting hydraulic brake pump according to claim 1, characterized in that: The mounting ring (51) is fixedly connected to one side of the hinge seat (3), and the movable ring (52) has multiple leverage grooves.

3. The self-adjusting hydraulic brake pump according to claim 1, characterized in that: One end of each limiting block (54) is triangular, each pressure block (55) is slidably connected inside the mounting ring (51), and each pressure block (55) is fixedly connected to the corresponding spring (56).

4. A self-adjusting hydraulic brake pump according to claim 1, characterized in that: The connecting rods (53) are all slidably connected inside the connecting grooves (501).

5. A self-adjusting hydraulic brake pump according to claim 1, characterized in that: The inner diameter of the extrusion ring (59) is larger than the outer diameter of the mounting ring (51).

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