Brake upper pump with adjustable span

Abstract

The utility model relates to the technical field of oil pressure brake accessories, in particular to a span-adjustable brake upper pump. An upper brake pump and a brake handle are included, the upper brake pump comprises an upper pump shell and a plunger valve assembly arranged in the upper pump shell, the upper pump shell is provided with a handle connecting part used for installing the brake handle and an installing base, the brake handle comprises a handle body and a handle head, and the handle body and the handle head are both hinged to the handle connecting part. A brake portion matched with the plunger valve assembly is arranged at one end, close to the plunger valve assembly, of the handle head, a span adjusting hole is formed in the handle body, a span adjusting screw in threaded connection with the span adjusting hole is mounted in the span adjusting hole, and a matching portion capable of abutting against one end of the span adjusting screw is arranged on the handle head. A screwing assembly fixedly connected with the span adjusting screw in the circumferential direction is arranged at the end, close to the matching part, of the span adjusting screw. After the prior art is improved, the span can be easily and manually adjusted, and great convenience is achieved.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic brake components technology, and in particular to an adjustable span brake upper pump. Background Technology

[0002] Motorcycles and electric vehicles mostly use hydraulic braking systems. The principle of hydraulic braking is that when you manually press the brake lever, the lever squeezes the piston inside the upper pump housing, causing the hydraulic oil in the upper pump to pass through the oil circuit and push the piston on the brake caliper, thus causing the brake pads in the brake disc to brake.

[0003] Traditional brake levers have a fixed span; however, different drivers have different hand sizes, with female drivers' hands being significantly smaller than male drivers'. Therefore, drivers with smaller hands may find it difficult to grip the brake lever, compromising comfort and convenience. Furthermore, in emergencies, they may be unable to quickly apply the brakes, posing a significant safety hazard.

[0004] In view of this, Chinese patent document CN215245346U discloses a novel braking mechanism with parking and adjustable span, including a brake upper pump, a brake handle, and a parking assembly. The brake upper pump includes an upper pump housing and a plunger valve assembly disposed within the upper pump housing. The upper pump housing has a handle connecting part and a mounting seat for mounting the brake handle. The handle connecting part is hinged to the brake handle. The brake handle has a brake braking part corresponding to the plunger valve assembly. The parking assembly includes a rocker arm hinged to the brake handle and a torsion spring mounted on the rocker arm and the brake handle. The brake handle includes a handle body and a handle head. The handle head is hinged to the handle connecting part. The handle is hinged to the handle head, and the handle body has a span adjustment hole. A span adjustment screw is installed in the span adjustment hole, and a nut is provided on the span adjustment screw. The handle head has a mating block that abuts against the span adjustment screw. In this utility model, the span adjustment function is achieved by turning the span adjustment screw and nut to adjust the length of the end of the span adjustment screw that extends out of the span adjustment hole and abuts against the mating block, thereby changing the span of the handle to meet the comfort and convenience of different sized hands gripping the brake handle. However, adjusting the span by turning the screw and nut is very laborious and often requires the use of tools such as wrenches, making it very inconvenient when the span needs to be adjusted.

[0005] Therefore, it is necessary to improve upon the shortcomings of the existing technologies mentioned above. Summary of the Invention

[0006] The technical problem to be solved by this utility model is to provide a new type of adjustable span brake pump to address the shortcomings of the prior art, thereby solving the problem that adjusting the span in the prior art is very laborious and inconvenient for manual adjustment.

[0007] To achieve the above objectives, this utility model provides the following technical solution: an adjustable brake upper pump, comprising a brake upper pump and a brake handle. The brake upper pump includes an upper pump housing and a plunger valve assembly disposed within the upper pump housing. The upper pump housing is provided with a handle connecting portion and a mounting seat for mounting the brake handle. The brake handle includes a handle body and a handle head, both of which are hinged to the handle connecting portion. The handle head, near the plunger valve assembly, is provided with a brake braking portion that cooperates with the plunger valve assembly. The handle body is provided with a span adjustment hole, in which a span adjustment screw is threadedly connected. The handle head is provided with a mating portion that abuts against one end of the span adjustment screw. The span adjustment screw, near the mating portion, is provided with a screwing assembly that is circumferentially fixedly connected to it.

[0008] By adopting the above technical solution, a screwing assembly is provided at one end of the span adjustment screw near the mating part and is fixedly connected to it in the circumference. When it is necessary to adjust the span by screwing the length of the span adjustment screw extending out of the span adjustment hole, it will be easier to adjust the span manually, which is very convenient.

[0009] A further provision of the above technical solution is that the screwing assembly includes a screwing part that is fixedly connected to the span adjustment screw.

[0010] By adopting the above technical solution, a screwing part is provided at one end of the span adjusting screw near the mating part and fixedly connected to it. When it is necessary to adjust the span by screwing and adjusting the length of the span adjusting screw extending out of the span adjusting hole, it will be more labor-saving and more secure and stable.

[0011] A further feature of the above technical solution is that the twisting part is provided with several twisting grooves in the circumferential direction to facilitate pinching by fingers.

[0012] By adopting the above technical solution, a rotating groove that is easy for fingers to pinch is provided in the circumference of the rotating part, which can provide rotational friction and torque, making it easier to rotate manually.

[0013] A further feature of the above technical solution is that the span adjusting screw has a cross groove on the end face that abuts against the mating part, which fits into the mating part.

[0014] By adopting the above technical solution, by setting a cross groove on the contact end face of the span adjustment screw and the mating part, the span adjustment screw and the mating part can fit tightly and smoothly during the braking process, which can reduce friction, reduce wear on the contact surface, and extend service life.

[0015] The beneficial effects achieved by this utility model are: the span can be easily adjusted manually, which is very convenient. Attached Figure Description

[0016] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model;

[0017] Figure 2 This is a schematic diagram of the exploded structure in an embodiment of this utility model. Detailed Implementation

[0018] The present invention will be further described below with reference to embodiments:

[0019] like Figure 1-2 As shown, an adjustable-span brake upper pump includes a brake upper pump 1 and a brake handle 2. The brake upper pump 1 includes an upper pump housing 11 and a plunger valve assembly 12 disposed within the upper pump housing 11. The upper pump housing 11 is provided with a handle connecting portion 111 for mounting the brake handle 2 and a mounting seat 112. The brake handle 2 includes a handle body 21 and a handle head 22. Both the handle body 21 and the handle head 22 are hinged to the handle connecting portion 111. The end of the handle head 22 near the plunger valve assembly 12 is provided with a brake fitting that cooperates with the plunger valve assembly 12. The brake part 221 has a span adjustment hole 211 on the handle body 21. A span adjustment screw 3 is installed in the span adjustment hole 211 and is threadedly connected to it. The handle head 22 has a mating part 222 that can abut against one end of the span adjustment screw 3. The end of the span adjustment screw 3 near the mating part 222 has a screwing part 31 that is fixedly connected to it. The screwing part 31 has several screwing grooves 311 around its circumference that are easy for fingers to pinch. The span adjustment screw 3 has a cross groove 32 that fits against the mating part 222 on the end face that abuts against the mating part 222.

[0020] A reset torsion spring 223 is provided between the handle head 22 and the handle connection part 111. A plunger rod 121 is provided at one end of the plunger valve assembly 12 near the brake part 221. An arc-shaped groove 2211 that abuts against the plunger rod 121 is provided on the side of the brake part 221 near the plunger rod 121.

Claims

1. An adjustable-pitch brake upper pump, comprising a brake upper pump and a brake handle, the brake upper pump comprising an upper pump housing and a plunger valve assembly disposed within the upper pump housing, the upper pump housing having a handle connecting portion and a mounting seat for mounting the brake handle, the brake handle comprising a handle body and a handle head, both the handle body and the handle head being hinged to the handle connecting portion, the handle head having a brake braking portion cooperating with the plunger valve assembly at one end, the handle body having a pitch adjustment hole, a pitch adjustment screw threadedly connected to the pitch adjustment hole being installed in the pitch adjustment hole, and the handle head having a mating portion abutting against one end of the pitch adjustment screw, characterized in that: The span adjustment screw has a screwing assembly that is fixedly connected to the mating part at one end.

2. The adjustable span brake upper pump according to claim 1, characterized in that: The screwing assembly includes a screwing part that is fixedly connected to the span adjustment screw.

3. The adjustable span brake upper pump according to claim 2, characterized in that: The twisting part is provided with several twisting grooves around its circumference to facilitate pinching with fingers.

4. The adjustable span brake upper pump according to any one of claims 1-3, characterized in that: The span adjustment screw has a cross-shaped groove on the end face that abuts against the mating part, which fits into the mating part.

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