Brake pump

Abstract

The brake pump comprises a handle, a limiting structure, a liquid storage device, a liquid storage cover, a liquid storage box, an oil outlet and a reset spring. The braking assembly is used for achieving the braking effect according to the state of the handle; the sealing assembly is used for preventing the brake fluid from leaking; the annular air bag is arranged on the piston, so that the direct contact area between the first piston and the brake cavity is reduced, the friction force between the first piston and the brake cavity is effectively reduced, and the brake effect is further improved; through the arrangement of the sealing gasket and the sealing block, the possibility that brake fluid flows out of the fluid storage box can be effectively reduced, through the arrangement of the sealing ring and the sealing ring, the possibility that the brake fluid flows out of the brake cavity can be effectively reduced, and therefore the using effect of the brake pump is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of brake systems of motorcycles and electric vehicles, and in particular to a brake pump. Background Art

[0002] Most of the existing motorcycles are hydraulic brake type motorcycles, and the principle of hydraulic braking is that a person manually pulls the brake handle of the motorcycle, and the brake handle squeezes the piston push rod to drive the piston in the upper pump to move, and the hydraulic oil in the hydraulic oil pot passes through the oil circuit and drives the piston on the brake lower pump to drive the brake pad to hold the brake disc to achieve braking.

[0003] For example, the Chinese utility model with publication number CN217893137U discloses a direct push upper pump, which drives the second adjustment shaft to move toward or away from the handle by rotating the second adjustment nut, thereby changing the distance between the handle and the grip, and also adjusts the braking torque by rotating the first adjustment nut. However, such a structure still has the following significant defects:

[0004] 1. When the brake pump is braking, the friction between the piston component inside and the brake chamber is too large, which can easily lead to poor braking effect and pose certain safety hazards;

[0005] 2. There is a lack of good sealing between the piston component and the brake chamber, and between the fluid reservoir cap and the fluid reservoir box, which can easily lead to the outflow of brake fluid, thus affecting the subsequent use of the brake pump. Summary of the invention

[0006] The utility model aims to solve one of the technical problems existing in the prior art.

[0007] The present application provides a brake pump, comprising:

[0008] Handle, limit structure, liquid storage device, liquid storage cover, liquid storage box, oil outlet, return spring;

[0009] Also includes:

[0010] A brake assembly, which is used to achieve a braking effect according to the state of the handle;

[0011] A seal assembly is used to prevent brake fluid leakage.

[0012] The brake components include:

[0013] a brake chamber disposed inside the brake assembly;

[0014] a piston component disposed in the brake chamber;

[0015] A guide member, one end of which is in contact with the handle.

[0016] Piston components include:

[0017] A piston connecting rod, one end of which is connected to the guide member;

[0018] A first piston, which is arranged at an end of the piston connecting rod away from the guide member;

[0019] The second piston is arranged on the piston connecting rod.

[0020] The first piston comprises:

[0021] An annular air bag is arranged on the outer side wall of the first piston.

[0022] The annular airbag is made of high polymer material polytetrafluoroethylene.

[0023] The gas filled inside the annular airbag is an inert gas.

[0024] The sealing assembly includes:

[0025] A fluid reservoir sealing component, used to prevent brake fluid from leaking from the fluid reservoir;

[0026] The brake chamber sealing component is used to prevent the brake fluid from leaking from the brake assembly.

[0027] The fluid reservoir sealing components include:

[0028] A sealing gasket, which is arranged at the connection between the liquid storage cover and the liquid storage box;

[0029] A sealing block is arranged at the bottom of the liquid storage cover.

[0030] Brake chamber sealing components include:

[0031] A sealing ring, which is arranged on the outer side wall of the second piston;

[0032] A sealing ring is arranged on the second piston.

[0033] The material of the sealing ring and the sealing ring is polyurethane.

[0034] The beneficial effects of the utility model are as follows:

[0035] 1. By arranging an annular airbag on the piston, the friction between the piston and the inner wall of the brake chamber can be effectively reduced, so that the braking effect is further improved;

[0036] 2. The setting of the sealing pad and the sealing block can effectively reduce the possibility of the brake fluid flowing out of the fluid reservoir. The setting of the sealing ring and the sealing ring can effectively reduce the possibility of the brake fluid flowing out of the brake chamber, thereby ensuring the use effect of the brake pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 A front view of a brake pump in an embodiment of the present application;

[0038] Figure 2 A top view of a brake pump in an embodiment of the present application;

[0039] Figure 3 This is a schematic diagram of the internal structure of the brake assembly in the embodiment of the present application;

[0040] Figure 4 In the embodiment of this application Figure 3 A schematic diagram of the enlarged structure of point A;

[0041] Figure 5 Schematic diagram of the explosion structure of the liquid storage device in the embodiment of the present application.

[0042] Reference numerals

[0043] 1-handle, 2-limiting structure, 3-liquid storage device, 31-liquid storage cover, 32-liquid storage box, 4-oil outlet, 5-reset spring, 6-brake assembly, 61-brake chamber, 62-piston component, 621-piston connecting rod, 622-first piston, 623-second piston, 624-annular airbag, 63-guide, 7-sealing assembly, 71-liquid storage box sealing component, 711-sealing pad, 712-sealing block, 72-brake chamber sealing component, 721-sealing ring, 722-sealing ring. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0045] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0046] In the following, in conjunction with the accompanying drawings, a brake pump provided in an embodiment of the present application is described in detail through specific embodiments and application scenarios.

[0047] Embodiment 1:

[0048] like Figures 1 to 4 As shown, an embodiment of the present application provides a brake pump, including a handle 1, a limiting structure 2, a liquid storage device 3, a liquid storage cover 31, a liquid storage box 32, an oil outlet 4, and a return spring 5; it also includes: a brake assembly 6, which is used to achieve a braking effect according to the state of the handle 1; a sealing assembly 7, which is used to prevent brake fluid leakage.

[0049] Furthermore, the brake assembly 6 includes a brake chamber 61 , which is arranged inside the brake assembly 6 ; a piston component 62 , which is arranged in the brake chamber 61 ; and a guide member 63 , one end of which abuts against the handle 1 .

[0050] Furthermore, the piston component 62 includes a piston connecting rod 621 , one end of which is connected to the guide member 63 ; a first piston 622 , which is arranged at one end of the piston connecting rod 621 away from the guide member 63 ; and a second piston 623 , which is arranged on the piston connecting rod 621 .

[0051] Furthermore, the first piston 622 includes an annular airbag 624 , which is disposed on an outer side wall of the first piston 622 .

[0052] Furthermore, the annular airbag 624 is made of a polymer material, polytetrafluoroethylene.

[0053] Furthermore, the gas filled inside the annular airbag 624 is an inert gas.

[0054] In this embodiment of the present application, due to the adoption of the above-mentioned structure, one end of the guide member 63 is in contact with the handle 1, and the other end is fixedly connected to the piston connecting rod 621. The piston component 62 is arranged in the brake chamber 61. By pulling the handle 1, the guide member 63 is pushed, so that the piston connecting rod 621 drives the first piston 622 to squeeze the brake fluid inside the brake chamber 61. The brake fluid flows from the oil outlet 4 to the brake cylinder to brake. Five annular air bags 624 are respectively arranged on the outer side wall of the first piston 622, so as to reduce the direct contact area between the first piston 622 and the brake chamber 61. The inside of 24 is filled with gas, so that the annular airbag 624 and the inner wall of the brake chamber 61 always maintain an airtight fit, effectively preventing the leakage of the brake fluid. The annular airbag 624 is made of a polymer material, polytetrafluoroethylene, which has strong lubrication properties and a small friction coefficient. It can effectively reduce the friction between the annular airbag 624 and the inner wall of the brake chamber 62, so that the braking effect is further improved. The gas inside the annular airbag 624 is an inert gas helium. Since the inert gas is stable, it can effectively avoid the rupture of the annular airbag 624, which will cause the inside of the brake chamber 61 to be oxidized and increase its friction.

[0055] Embodiment 2:

[0056] like Figures 1 to 5 As shown, in this embodiment, in addition to the structural features of the aforementioned embodiments, the sealing assembly 7 includes a fluid reservoir sealing component 71, which is used to prevent the brake fluid from leaking from the fluid reservoir 32; and a brake chamber sealing component 72, which is used to prevent the brake fluid from leaking from the brake assembly 6.

[0057] Furthermore, the liquid storage box sealing component 71 includes a sealing gasket 711 , which is arranged at the connection between the liquid storage cover 31 and the liquid storage box 32 ; and a sealing block 712 , which is arranged at the bottom of the liquid storage cover 31 .

[0058] Furthermore, the brake chamber sealing component 72 includes a sealing ring 721 , which is disposed on the outer side wall of the second piston 623 ; and a sealing ring 722 , which is disposed on the second piston 623 .

[0059] Furthermore, the sealing ring 721 and the sealing ring 722 are made of polyurethane.

[0060] In this embodiment of the present application, due to the adoption of the above-mentioned structure, a preliminary sealing effect is achieved by arranging a sealing gasket 711 between the liquid reservoir cover 31 and the liquid reservoir box 32, and a sealing block 712 is arranged at the central part of the bottom of the liquid reservoir cover 31. The sealing block 712 and the inner cavity of the liquid reservoir box 32 are rectangular in shape, and their length and width are equal, which further makes the liquid reservoir cover 31 and the liquid reservoir box 32 fit more closely, thereby reducing the possibility of brake fluid flowing out of the liquid reservoir box 32, and by arranging a groove on the second piston 623, the sealing ring 721 is respectively limited at the upper and lower ends of the second piston 623, and a sealing ring 722 is arranged at the groove in the middle of the second piston 623. The material of the sealing ring 721 and the sealing ring 722 is polyurethane, which has the characteristics of oil resistance, wear resistance, aging resistance, high hardness, elasticity, etc., and can be sealed through multi-stage cooperation under long-term friction and high-intensity work, which greatly reduces the possibility of brake fluid flowing out of the brake chamber 61, thereby ensuring the use effect of the brake pump.

[0061] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise one..." do not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0062] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A brake pump, comprising a handle (1), a limiting structure (2), a liquid storage device (3), a liquid storage cover (31), a liquid storage box (32), an oil outlet (4), and a return spring (5), characterized in that: Also includes: A brake assembly (6) for achieving a braking effect according to the state of the handle (1); A sealing assembly (7) is used to prevent brake fluid leakage.

2. A brake pump according to claim 1, characterized in that: The brake assembly (6) comprises: A brake chamber (61) disposed inside the brake assembly (6); A piston component (62) disposed in the brake chamber (61); A guide member (63) has one end that abuts against the handle (1).

3. A brake pump according to claim 2, characterized in that: The piston component (62) comprises: A piston connecting rod (621), one end of which is connected to the guide member (63); A first piston (622) disposed at an end of the piston connecting rod (621) away from the guide member (63); The second piston (623) is arranged on the piston connecting rod (621).

4. A brake pump according to claim 3, characterized in that: The first piston (622) comprises: An annular air bag (624) is arranged on the outer side wall of the first piston (622).

5. A brake pump according to claim 4, characterized in that: The annular airbag (624) is made of a polymer material, polytetrafluoroethylene.

6. A brake pump according to claim 4, characterized in that: The gas filled inside the annular airbag (624) is an inert gas.

7. A brake pump according to claim 6, characterized in that: The sealing assembly (7) comprises: A fluid storage box sealing component (71) for preventing brake fluid from leaking from the fluid storage box (32); A brake chamber sealing component (72) is used to prevent brake fluid from leaking from the brake assembly (6).

8. A brake pump according to claim 7, characterized in that: The liquid storage box sealing component (71) comprises: A sealing gasket (711) disposed at the connection between the liquid storage cover (31) and the liquid storage box (32); A sealing block (712) is arranged at the bottom of the liquid storage cover (31).

9. A brake pump according to claim 7, characterized in that: The brake chamber sealing component (72) comprises: A sealing ring (721) disposed on an outer side wall of the second piston (623); A sealing ring (722) is disposed on the second piston (623).

10. A brake pump according to claim 9, characterized in that: The sealing ring (721) and the sealing ring (722) are made of polyurethane.

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