CN221090777U - Brake pump for motor vehicle - Google Patents

Abstract

The utility model is applicable to the technical field of brake pumps, and provides a motor vehicle brake pump, which comprises: a brake pump body; the hydraulic cylinder is arranged on the outer side wall of the brake pump body; the oil pipe is arranged on the outer side wall of the hydraulic cylinder; the piston is arranged in the hydraulic cylinder; the piston rod is arranged at the central position of one end of the piston; the sealing ring groove is formed in the outer side wall of the piston; the sealing ring is embedded in the sealing ring groove; an elastic air bag embedded in the position of the outer side wall of the piston, which is close to one side of the sealing ring; the pressure plate is moved by utilizing the reaction force of hydraulic oil in the moving process of the piston, then the gas in the piston cylinder is pressed into the elastic air bag, the gas in the elastic air bag is expanded after being increased and the air pressure is increased, the elastic air bag is contacted with the outer side wall of the sealing ring after being expanded, the sealing ring is supported by the elastic air bag, and the problem that the sealing ring is seriously worn due to the fact that the friction resistance of the sealing ring received by the piston in the moving process is increased is avoided.

Description

Brake pump for motor vehicle

Technical Field

The utility model belongs to the technical field of brake pumps, and particularly relates to a motor vehicle brake pump.

Background

The brake pump is used for converting mechanical energy input by a pedal mechanism of the motor vehicle into hydraulic energy and finally realizing braking through the brake mechanism.

Most of the existing motor vehicle brake pumps adopt piston brake pumps, the piston in the brake pump repeatedly moves for a long time to cause gradual abrasion of a sealing ring, the abrasion of the sealing ring can cause leakage of hydraulic oil in the brake pump, the hydraulic oil leakage can cause failure of a brake system, and great potential safety hazards exist.

Thus, a motor vehicle brake pump is proposed.

Disclosure of utility model

The utility model provides a motor vehicle brake pump, which aims to solve the problem of oil leakage caused by easy abrasion of a piston in the existing brake pump.

The utility model is achieved by a motor vehicle brake pump comprising: a brake pump body; the hydraulic cylinder is arranged on the outer side wall of the brake pump body; the oil pipe is arranged on the outer side wall of the hydraulic cylinder; the piston is arranged in the hydraulic cylinder; the piston rod is arranged at the central position of one end of the piston; the sealing ring groove is formed in the outer side wall of the piston; the sealing ring is embedded in the sealing ring groove; an elastic air bag embedded in the position of the outer side wall of the piston, which is close to one side of the sealing ring; the groove is formed in the center of the outer side wall of the piston; the piston cylinder is arranged on the inner side wall of the groove; the connecting pipe is arranged between the piston cylinder and the elastic air bag; a spring arranged on the inner side wall of the piston cylinder; and a piston disc embedded in the piston cylinder; the support rod is arranged at the central position of the outer side wall of the piston disc; a pressure plate arranged at one end of the supporting rod.

Preferably, the piston moves in a piston manner within the hydraulic cylinder and the piston disc moves in a piston manner within the piston cylinder.

Preferably, the two seal ring grooves are arranged in total, and the two seal ring grooves are symmetrically arranged on the outer side wall of the piston.

Preferably, the cross sections of the sealing ring and the elastic air bag are of annular structures.

Preferably, the cross section of the groove is of a circular structure, and the inner diameter of the groove is larger than the outer diameter of the pressure plate.

Preferably, the four connecting pipes are arranged in total, and the four connecting pipes are symmetrically arranged between the piston cylinder and the elastic air bag.

Preferably, the elastic air bag and the piston cylinder are communicated with a connecting pipe.

Compared with the prior art, the embodiment of the application has the following main beneficial effects:

The pressure plate is moved by utilizing the reaction force of hydraulic oil in the moving process of the piston, then the gas in the piston cylinder is pressed into the elastic air bag, the gas in the elastic air bag is expanded after being increased and the air pressure is increased, the elastic air bag is contacted with the outer side wall of the sealing ring after being expanded, the sealing ring is supported by the elastic air bag, the problem that the sealing ring is seriously worn due to the fact that the friction resistance of the sealing ring received by the piston in the moving process is increased is avoided, the protection of the sealing ring is improved, and the serious oil leakage caused by the abrasion of the sealing ring is avoided.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic illustration of the piston structure of the present utility model;

FIG. 3 is a schematic view of the piston cylinder structure of the present utility model;

FIG. 4 is a schematic view of the seal ring structure of the present utility model;

fig. 5 is an exploded schematic view of the piston cartridge of the present utility model.

In the figure: 1. a brake pump body; 2. a hydraulic cylinder; 3. an oil pipe; 4. a piston; 5. a piston rod; 6. a seal ring groove; 7. a seal ring; 8. an elastic air bag; 9. a groove; 10. a piston cylinder; 11. a connecting pipe; 12. a spring; 13. a piston disc; 14. a support rod; 15. and (3) pressing a plate.

Detailed Description

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the applications herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description of the application and the claims and the description of the drawings above are intended to cover a non-exclusive inclusion. The terms first, second and the like in the description and in the claims or in the above-described figures, are used for distinguishing between different objects and not necessarily for describing a sequential or chronological order.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

The embodiment of the utility model provides a motor vehicle brake pump, as shown in fig. 1-5, the motor vehicle brake pump comprises a brake pump body 1, a hydraulic cylinder 2 is fixedly connected to one side outer wall of the brake pump body 1 through bolts, an oil pipe 3 is arranged at the central position of one side outer wall of the hydraulic cylinder 2 far away from the brake pump body 1, a piston 4 is arranged in the hydraulic cylinder 2, the piston 4 does piston motion in the hydraulic cylinder 2, a piston rod 5 is arranged at the central position of one side outer wall of the piston 4, sealing ring grooves 6 are formed in the outer wall of one side, which is adjacent to the piston rod 5, the sealing ring grooves 6 are arranged in two, the two sealing ring grooves 6 are symmetrically formed in the outer side wall of the piston 4, a sealing ring 7 is embedded in the inner wall of the sealing ring groove 6, an elastic air bag 8 is embedded in the outer wall of one side outer wall of the piston 4, a groove 9 is formed in the central position of one side outer wall of the piston 4 far away from the piston rod 5, a piston cylinder 10 is arranged at the central position of one side inner wall of the groove 9, four connecting pipes 11 are arranged between the piston cylinder 10 and the elastic air bag 8, four connecting rods 11 are arranged in the piston cylinder 10 and the piston disc 13 are arranged, one side of the piston disc 13 is arranged at one side of the piston disc 13 is arranged between the piston disc 13 and the piston disc 13, and the piston disc 13 is arranged at one side of the piston disc 13, which is arranged at the inner side of the connecting rod 13, which is far from the piston disc 13 is far from the piston disc 12, and the piston disc 13 is arranged at the inner side wall is adjacent side, and the piston disc 13 is adjacent to the piston disc 10.

It should be noted that, because the piston in the existing brake pump repeatedly moves for a long time and will lead to the sealing washer to wear gradually, the sealing washer wearing and tearing can lead to the inside hydraulic oil of brake pump to appear leaking the condition, this embodiment utilizes the reaction force of hydraulic oil to make pressure disk 15 remove through piston 4 in the removal in-process, and then the gas with in the piston cylinder 10 is pressed into elastic air bag 8, the gas in the elastic air bag 8 increases, the inflation after the atmospheric pressure increases, the elastic air bag 8 is expanded and is contacted with the lateral wall of sealing washer 7, elastic air bag 8 supports sealing washer 7, avoid piston 4 to become great problem that causes sealing washer 7 wearing and tearing at the frictional resistance that removes in-process sealing washer 7 received, improve the protection to sealing washer 7, avoid the sealing washer wearing and tearing seriously to cause the oil leak.

Specifically, in this embodiment, this scheme mainly includes elasticity gasbag 8, when the brake pump body 1 is in the use, piston rod 5 in pneumatic cylinder 2 drives piston 4 in pneumatic cylinder 2 under the input of outside mechanical energy and removes, hydraulic oil is released through oil pipe 3 in the pneumatic cylinder 2, when piston 4 is in the removal in-process, pressure disk 15 can receive the extrusion force of hydraulic oil and progressively increase, at this moment, pressure disk 15 is pressed the back and is driven piston disk 13 in piston cylinder 10 through bracing piece 14, the air in piston cylinder 10 gets into elasticity gasbag 8 through connecting pipe 11, the atmospheric pressure in elasticity gasbag 8 is after the inflation, with the outside wall contact of sealing washer 7 after the inflation of elasticity gasbag 8, elasticity gasbag 8 supports sealing washer 7, avoid piston 4 to receive the frictional resistance grow that the sealing washer 7 received in the removal and cause the serious problem of sealing washer 7 wearing and tearing, improve the protection to sealing washer 7.

In a further preferred embodiment of the utility model, as shown in figures 3-4, the cross-sections of the sealing ring 7 and the elastic balloon 8 are both annular structures.

In the present embodiment, the seal ring 7 and the elastic balloon 8 may be made to be fitted and provided on the outer side wall of the piston 4.

In a further preferred embodiment of the utility model, as shown in fig. 2, the cross section of the groove 9 is circular in structure, and the inner diameter of the groove 9 is larger than the outer diameter of the platen 15.

In this embodiment, the platen 15 may be caused to move within the recess 9.

It should be noted that, for simplicity of description, the foregoing embodiments are all illustrated as a series of acts, but it should be understood by those skilled in the art that the present utility model is not limited by the order of acts, as some steps may be performed in other order or concurrently in accordance with the present utility model. Further, those skilled in the art will also appreciate that the embodiments described in the specification are all preferred embodiments, and that the acts and modules referred to are not necessarily required for the present utility model.

In the several embodiments provided by the present application, it should be understood that the disclosed apparatus may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, and such partitioning of the above-described elements may be implemented in other manners, e.g., multiple elements or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or communication connection shown or discussed as being between each other may be an indirect coupling or communication connection between devices or elements via some interfaces, which may be in the form of telecommunications or otherwise.

The units described above as separate components may or may not be physically separate, and components shown as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

The above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the scope of the present utility model. It will be apparent that the described embodiments are merely some, but not all, embodiments of the utility model. Based on these embodiments, all other embodiments that may be obtained by one of ordinary skill in the art without inventive effort are within the scope of the utility model. Although the present utility model has been described in detail with reference to the above embodiments, those skilled in the art may still combine, add or delete features of the embodiments of the present utility model or make other adjustments according to circumstances without any conflict, so as to obtain different technical solutions without substantially departing from the spirit of the present utility model, which also falls within the scope of the present utility model.

Claims (7)

1. A motor vehicle brake pump, comprising: a brake pump body (1); the hydraulic cylinder (2) is arranged on the outer side wall of the brake pump body (1); an oil pipe (3) arranged on the outer side wall of the hydraulic cylinder (2); a piston (4) provided inside the hydraulic cylinder (2); a piston rod (5) arranged at the center of one end of the piston (4); a sealing ring groove (6) arranged on the outer side wall of the piston (4); a seal ring (7) embedded in the seal ring groove (6); an elastic air bag (8) embedded in the outer side wall of the piston (4) at a position close to one side of the sealing ring (7); a groove (9) arranged at the central position of the outer side wall of the piston (4); a piston cylinder (10) arranged on the inner side wall of the groove (9); a connecting pipe (11) arranged between the piston cylinder (10) and the elastic air bag (8); a spring (12) arranged on the inner side wall of the piston cylinder (10); a piston disc (13) embedded in the piston cylinder (10); a supporting rod (14) arranged at the central position of the outer side wall of the piston disc (13); a pressure plate (15) arranged at one end of the supporting rod (14).

2. A motor vehicle brake pump according to claim 1, wherein the piston (4) is in piston movement inside the hydraulic cylinder (2) and the piston disc (13) is in piston movement inside the piston cylinder (10).

3. A motor vehicle brake pump according to claim 1, characterized in that the number of sealing grooves (6) is two, and that the two sealing grooves (6) are symmetrically open on the outer side wall of the piston (4).

4. A motor vehicle brake pump according to claim 1, wherein the cross-sections of the sealing ring (7) and the flexible bladder (8) are of annular configuration.

5. A motor vehicle brake pump according to claim 1, wherein the grooves (9) are of circular cross-section and the inner diameter of the grooves (9) is greater than the outer diameter of the pressure plate (15).

6. A motor vehicle brake pump according to claim 1, characterized in that the connecting pipes (11) are provided in total of four, and that the four connecting pipes (11) are symmetrically arranged between the piston cylinder (10) and the elastic air-bag (8).

7. A motor vehicle brake pump according to claim 1, wherein the flexible bladder (8) and the piston cylinder (10) are in communication with a connecting tube (11).