Brake pump assembly

Abstract

The utility model belongs to the technical field of brake pump assemblies, and discloses a brake pump assembly which comprises a brake pump body, a push rod is arranged in the brake pump body in a sliding mode, a first check ring is fixedly arranged on the inner side of the push rod, and a first piston is fixedly arranged on the other side of the first check ring. A first piston is fixedly arranged on one side of the first check ring, a plurality of leather cups are fixedly arranged in the first piston, a first return spring is fixedly arranged on the other side of each leather cup, a second check ring is fixedly arranged on the other side of each first return spring, and a second piston is fixedly arranged on the other side of each second check ring. Therefore, a layer of guarantee is added to the braking effect of the brake pump, it is guaranteed that when one set of pipeline breaks down and fails, the other set of pipeline can still play a role in braking, and therefore the reliability of automobile braking and the driving safety are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of brake pump assemblies, in particular to a brake pump assembly. Background Art

[0002] The brake pump assembly, commonly known as the master brake cylinder or brake master cylinder, is the core component of the vehicle's braking system. Its main function is to generate high-pressure oil, which is transmitted to each wheel cylinder through the oil pipe, causing the wheel cylinder to open and push the brake shoe to generate braking force;

[0003] In the prior art, some brake pumps are internally provided with a set of brake fluid delivery pipelines. Although a set of pipelines can also achieve a braking effect, once a pipeline fails, it will affect the braking effect of the car, as well as the safety of personnel and vehicle driving. Utility Model Content

[0004] In order to solve the problems raised in the above-mentioned background technology, the utility model provides a brake pump assembly, which has the advantages of multiple sets of infusion pipelines. The utility model provides two sets of pipelines to add a layer of protection for the braking effect of the brake pump, ensuring that when one set of pipelines fails and fails, the other set of pipelines can still continue to have a braking effect, thereby improving the reliability of vehicle braking and driving safety.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a brake pump assembly, comprising a brake pump body, a push rod is slidingly arranged inside the brake pump body, a first retaining ring is fixedly arranged on the inner side of the push rod, a first piston is fixedly arranged on the other side of the first retaining ring, a plurality of leather cups are fixedly arranged inside the first piston, a first return spring is fixedly arranged on the other side of the first return spring, a second retaining ring is fixedly arranged on the other side of the second retaining ring, a second piston is fixedly arranged on the other side of the second retaining ring, and a plurality of leather cups are fixedly arranged inside the second piston, a second return spring is fixedly arranged on the other side of the second piston, and the other side of the second return spring is fixedly connected to the brake pump body.

[0006] Preferably, a first sealing ring is fixedly provided on the inner side of the first retaining ring, and the first sealing ring is in contact with the inner wall of the brake pump body.

[0007] Preferably, a second sealing ring is fixedly provided on the outer side of the second retaining ring, and the second sealing ring is in contact with the inner wall of the brake pump body.

[0008] Preferably, a circle of compensation holes is provided on one side surface of the first piston, and another circle of compensation holes is provided on one side surface of the second piston.

[0009] Preferably, a connecting pipe is fixedly provided on the top surface of the brake pump body, a liquid storage pot is fixedly provided on the top surface of the connecting pipe, and a lid is threadedly connected to the top surface of the liquid storage pot.

[0010] Preferably, a first infusion hole is provided inside the communicating tube, a second infusion hole is provided inside the communicating tube, and the first infusion hole and the second infusion hole are communicated with the interior of the brake pump body.

[0011] Preferably, a first liquid outlet is fixedly provided on the front outer side of the brake pump body, a leather hose is fixedly provided on the outer side of the first liquid outlet, a second liquid outlet is fixedly provided on the rear outer side of the brake pump body, and another leather hose is fixedly provided on the outer side of the second liquid outlet.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0013] The utility model drives the push rod to move by the foot pedal, and the push rod drives the first retaining ring and the first piston to move. When the first piston moves, the brake fluid is pushed through the leather cup. At the same time, the first piston pushes the second retaining ring and the second piston to move through the first return spring. Then, the brake fluid is pushed through the leather cup outside the second piston to be transmitted to each brake cylinder to push the piston. The utility model provides two sets of pipelines, thereby adding a layer of protection for the braking effect of the brake pump, ensuring that when one set of pipelines malfunctions and fails, the other set of pipelines can continue to have a braking effect, thereby improving the reliability of automobile braking and driving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of a brake pump assembly of the utility model;

[0015] Figure 2 This is a schematic diagram of the cross-sectional structure of the liquid storage tank of the utility model;

[0016] Figure 3 This is a schematic diagram of the cross-sectional structure of the brake pump body of the utility model;

[0017] Figure 4 For this utility model Figure 2 A schematic diagram of the structure of output;

[0018] Figure 5 This is a schematic diagram of the leather cup installation structure of the utility model.

[0019] In the figure: 1. Brake pump body; 2. Push rod; 3. First retaining ring; 4. First sealing ring; 5. First piston; 6. Leather cup; 7. First return spring; 8. Second retaining ring; 9. Second piston; 10. Second return spring; 11. Second sealing ring; 12. Compensating hole; 13. Cover; 14. Liquid reservoir; 15. Connecting pipe; 16. First infusion hole; 17. Second infusion hole; 18. First liquid outlet hole; 19. Second liquid outlet hole; 20. Leather tube. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] like Figures 1 to 5 As shown, the utility model provides a brake pump assembly, including a brake pump body 1, a push rod 2 is slidably provided inside the brake pump body 1, a first retaining ring 3 is fixedly provided on the inner side of the push rod 2, a first piston 5 is fixedly provided on the other side of the first retaining ring 3, a plurality of leather cups 6 are fixedly provided inside the first piston 5, a first return spring 7 is fixedly provided on the other side of the leather cup 6, a second retaining ring 8 is fixedly provided on the other side of the first return spring 7, a second piston 9 is fixedly provided on the other side of the second retaining ring 8, and a plurality of leather cups 6 are fixedly provided inside the second piston 9, a second return spring 10 is fixedly provided on the other side of the second piston 9, and the second return spring 10 is fixedly provided on the other side of the second return spring 10. The other side of 0 is fixedly connected to the brake pump body 1. The push rod 2 is driven by the foot pedal to move, and the push rod 2 drives the first retaining ring 3 and the first piston 5 to move. When the first piston 5 moves, it pushes the brake fluid through the leather cup 6. The first piston 5 simultaneously pushes the second retaining ring 8 and the second piston 9 to move through the first return spring 7. Then, the brake fluid is pushed through the leather cup 6 outside the second piston 9 and transmitted to each brake cylinder to push the piston. Multiple sets of infusion pipelines add a layer of protection for the braking effect of the brake pump, ensuring that when one set of pipelines fails and fails, the other set of pipelines can continue to have a braking effect, thereby improving the reliability of vehicle braking and driving safety.

[0022] Specifically, a first sealing ring 4 is fixedly provided on the inner side of the first retaining ring 3, and the first sealing ring 4 is in contact with the inner wall of the brake pump body 1. The first sealing ring 4 is used to seal the brake fluid inside the brake pump body 1 and prevent the brake fluid from flowing too dispersedly.

[0023] Furthermore, a second sealing ring 11 is fixedly provided on the outer side of the second retaining ring 8, and the second sealing ring 11 is in contact with the inner wall of the brake pump body 1. The second sealing ring 11 is used to isolate the two sets of infusion pipes while ensuring their sealing.

[0024] Furthermore, a circle of compensation holes 12 is opened on one side of the first piston 5, and another circle of compensation holes 12 is opened on one side of the second piston 9. When the brake is released quickly, the brake fluid at the rear of the first piston 5 and the second piston 9 passes through the compensation holes 12 thereon, overturns the leather cup 6, and compensates and enters the working chamber in front of the piston. When the brake is pressed quickly again, the brake fluid in the working chamber is discharged again, and the discharged brake fluid is more than the returned brake fluid.

[0025] It is worth noting that a connecting pipe 15 is fixedly provided on the top surface of the brake pump body 1, and a liquid reservoir 14 is fixedly provided on the top surface of the connecting pipe 15. A lid 13 is threadedly connected to the top surface of the liquid reservoir 14. Open the lid 13 and pour the brake fluid into the liquid reservoir 14, which is then stored in the liquid reservoir 14.

[0026] It is worth noting that a first infusion hole 16 is provided inside the connecting tube 15, and a second infusion hole 17 is provided inside the connecting tube 15, and the first infusion hole 16 and the second infusion hole 17 are communicated with the interior of the brake pump body 1. The first infusion hole 16 and the second infusion hole 17 are used to input brake fluid into different positions inside the brake pump body 1, thereby achieving different effects.

[0027] It is worth mentioning that a first liquid outlet 18 is fixedly provided on the front outer side of the brake pump body 1, a leather tube 20 is fixedly provided on the outer side of the first liquid outlet 18, a second liquid outlet 19 is fixedly provided on the rear outer side of the brake pump body 1, and another leather tube 20 is fixedly provided on the outer side of the second liquid outlet 19. The first liquid outlet 18 and the second liquid outlet 19 are two different sets of pipelines. When one set cannot be used, the other set can play a vital role.

[0028] Among them, the leather cup 6 is the existing technology and will not be described in detail. At the same time, the utility model also includes a power supply, a controller and a switch, which are not the main technical points of this patent and will not be described in detail. The "front, back, left and right" perspectives of this device are as follows: Figure 1 The direction shown in the figure is the reference.

[0029] Working principle:

[0030] When using a brake pump assembly, first, open the cover 13, and then pour brake fluid into the reservoir 14. Then the brake fluid inside the reservoir 14 will flow to the back of the brake pump body 1 along the first infusion hole 16 and the second infusion hole 17 inside the connecting pipe 15. When braking is needed, the push rod 2 inside the brake pump body 1 is driven to move by the pedal, and the push rod 2 drives the first piston 5 to move forward through the first retaining ring 3, and the first piston 5 pushes the brake fluid from the first outlet 18 into the inside of the leather tube 20 through the leather cup 6. Then, it is transmitted to each brake cylinder through the leather tube 20 to push the piston. The first sealing ring 4 here is used for sealing to prevent the brake fluid from flowing too dispersedly, and at the same time, it also ensures that enough brake fluid can be pushed. After the braking is completed and the pedal is released, the push rod 2 and its related components will return to their original position through the first return spring 7. If only one set of pipelines is set inside the pump body, once a failure occurs, it is easy to cause the vehicle to be unable to move. Braking, so two sets of pipelines are arranged in the pump body to increase the reliability and driving safety of automobile braking. When the first piston 5 moves, it will also push the second retaining ring 8 to move through the first return spring 7, and the second retaining ring 8 pushes the second retaining ring 8 to move. Then the leather cup 6 outside the second piston 9 pushes the brake fluid to the inside of the second liquid outlet hole 19, and finally transmits it to each brake cylinder through the leather tube 20 outside the second liquid outlet hole 19 to push the piston, and then returns to its original position through the second return spring 10. The second sealing ring 11 outside the second retaining ring 8 is used to isolate the two sets of infusion pipelines, and the compensation hole 12 is mainly used for brake fluid compensation to ensure that the working chamber discharges more oil each time and returns less oil. The utility model adds a layer of protection to the braking effect of the brake pump by arranging two sets of pipelines, ensuring that when one set of pipelines fails and fails, the other set of pipelines can continue to brake, thereby improving the reliability and driving safety of automobile braking.

[0031] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0032] 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A brake pump assembly, comprising a brake pump body (1), characterized in that: A push rod (2) is slidingly provided inside the brake pump body (1), a first retaining ring (3) is fixedly provided on the inner side of the push rod (2), a first piston (5) is fixedly provided on the other side of the first retaining ring (3), a plurality of leather cups (6) are fixedly provided inside the first piston (5), a first return spring (7) is fixedly provided on the other side of the leather cup (6), a second retaining ring (8) is fixedly provided on the other side of the first return spring (7), a second piston (9) is fixedly provided on the other side of the second retaining ring (8), a plurality of leather cups (6) are fixedly provided inside the second piston (9), a second return spring (10) is fixedly provided on the other side of the second piston (9), and the other side of the second return spring (10) is fixedly connected to the brake pump body (1).

2. The brake pump assembly according to claim 1, characterized in that: A first sealing ring (4) is fixedly provided on the inner side of the first retaining ring (3), and the first sealing ring (4) is in contact with the inner wall of the brake pump body (1).

3. The brake pump assembly according to claim 1, characterized in that: A second sealing ring (11) is fixedly provided on the outer side of the second retaining ring (8), and the second sealing ring (11) is in contact with the inner wall of the brake pump body (1).

4. The brake pump assembly according to claim 1, characterized in that: A circle of compensation holes (12) is provided on one side of the first piston (5), and another circle of compensation holes (12) is provided on one side of the second piston (9).

5. The brake pump assembly according to claim 1, characterized in that: A connecting pipe (15) is fixedly provided on the top surface of the brake pump body (1), a liquid storage pot (14) is fixedly provided on the top surface of the connecting pipe (15), and a cover (13) is threadedly connected to the top surface of the liquid storage pot (14).

6. The brake pump assembly according to claim 5, characterized in that: The communicating tube (15) is provided with a first infusion hole (16) inside, the communicating tube (15) is provided with a second infusion hole (17) inside, and the first infusion hole (16) and the second infusion hole (17) are communicated with the inside of the brake pump body (1).

7. The brake pump assembly according to claim 1, characterized in that: A first liquid outlet (18) is fixedly provided on the front outer side of the brake pump body (1), a leather tube (20) is fixedly provided on the outer side of the first liquid outlet (18), a second liquid outlet (19) is fixedly provided on the rear outer side of the brake pump body (1), and another leather tube (20) is fixedly provided on the outer side of the second liquid outlet (19).

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