CN216447342U

CN216447342U - Hydraulic brake pump

Info

Publication number: CN216447342U
Application number: CN202123234270.3U
Authority: CN
Inventors: 陈灵刚; 刘叶芝; 韩伟玉; 金作斌; 刘叶勇
Original assignee: Yuhuan Aoheng Machinery Co ltd
Current assignee: Yuhuan Aoheng Machinery Co ltd
Priority date: 2021-12-21
Filing date: 2021-12-21
Publication date: 2022-05-06
Anticipated expiration: 2031-12-21

Abstract

The utility model provides a hydraulic brake pump, and belongs to the technical field of machinery. The brake pump solves the problem that the conventional brake pump is poor in braking effect during continuous braking. The hydraulic brake pump comprises a pump body and a piston arranged in the pump body, wherein the piston divides an inner cavity of the pump body into an oil inlet cavity and an oil outlet cavity, the side part of the pump body is penetrated and provided with an exhaust hole and an oil outlet hole which are communicated with the oil outlet cavity to the outside of the pump body, the exhaust hole of the pump body is connected with an air bleeding screw, a valve core and a spring are arranged in the oil outlet hole, a convex annular convex shoulder is arranged on the side wall of one end, close to the oil outlet cavity, of the oil outlet hole, the valve core is abutted against the convex shoulder under the elastic action of the spring and forms a seal, a through hole communicated with the inner hole of the convex shoulder and the oil outlet hole is penetrated and provided on the valve core, and an oil outlet gap is formed between the outside of the valve core and the inner wall of the oil outlet hole. The hydraulic brake pump has the advantage of good braking effect during continuous braking.

Description

Hydraulic brake pump

Technical Field

The utility model belongs to the technical field of machinery, and relates to a hydraulic brake pump.

Background

At present, a hydraulic brake pump on the market generally comprises a pump body, a piston and a push rod assembly, wherein the piston divides an inner cavity of the pump body into two mutually independent sub-cavities, the push rod assembly is in transmission connection with a pedal plate, a user can drive the push rod assembly and the piston to act by stepping on the pedal plate, an oil inlet cavity in the pump body starts to feed oil, an oil outlet cavity starts to discharge oil, and pressure difference is generated on two sides of the piston, so that the piston is pushed to move by the aid of oil pressure, and assistance is provided for braking action.

However, after the brake pump is braked once, the piston is reset under the elastic force of the spring, the oil in the oil outlet cavity is quickly supplemented, if the pedal is treaded again for braking in a short time, the oil in the oil outlet cavity cannot flow out quickly, and an oil pressure difference cannot be formed between the oil inlet cavity and the oil outlet cavity quickly, so that the working efficiency and the braking effect of the brake pump are influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems in the prior art, provides a hydraulic brake pump, and solves the problem that the conventional brake pump is poor in braking effect during continuous braking.

The purpose of the utility model can be realized by the following technical scheme:

the hydraulic brake pump is characterized in that the side part of the pump body is provided with an exhaust hole and an oil outlet hole which are communicated with the oil outlet cavity to the outside of the pump body in a penetrating manner, the exhaust hole of the pump body is connected with an air bleeding screw, a valve core and a spring are arranged in the oil outlet hole, a protruding annular convex shoulder is arranged on the side wall of one end, close to the oil outlet cavity, of the oil outlet hole, the valve core abuts against the convex shoulder under the elastic action of the spring and forms sealing, a through hole communicated with the inner hole of the convex shoulder and the oil outlet hole is formed in the valve core in a penetrating manner, and an oil outlet gap is formed between the outer side of the valve core and the inner wall of the oil outlet hole.

When the hydraulic brake pump brakes, the oil in the oil outlet cavity pushes the valve core to move and compress the spring, and the oil flows out from the through hole and the oil outlet gap, so that the effect of quick oil outlet is realized, the pressure difference is quickly formed on two sides of the piston, and the braking is assisted. After the braking, the piston is reset, the valve core is abutted against the convex shoulder under the action of the elastic force of the spring and forms sealing, and oil outside the oil outlet hole can only enter the oil outlet cavity through the through hole in the valve core, so that the oil is slowly entered. When the brake is performed again in a short time, the pressure difference is formed on the two sides of the piston rapidly, and the working efficiency and the braking effect of the brake pump are improved.

In the above hydraulic brake pump, the valve core is barrel-shaped, the opening is located at one end far away from the shoulder, and one end of the spring extends into the valve core and abuts against the inner side of one end of the valve core close to the shoulder.

In the hydraulic brake pump, an oil passing groove is formed in the side portion of the valve core in a penetrating mode, the oil passing groove is long-strip-shaped, and the length direction of the oil passing groove is consistent with the axial direction of the valve core.

In the hydraulic brake pump, the oil outlet of the pump body is further connected with a cylindrical oil outlet joint in a threaded manner, and the other end of the spring, which is opposite to the valve core, abuts against the oil outlet joint.

In foretell hydraulic brake pump, the outer end that goes out the oil head stretches out the pump body, the outside cover that goes out the oil head is equipped with and is annular gasket, can when going out the oil head precession with the gasket sticiss in the pump body outside.

In the above-described one of the hydraulic brake pumps, an end of the spool facing the shoulder is recessed around the through hole and forms a tapered surface.

In the hydraulic brake pump, an oil inlet hole communicated with the oil inlet cavity is further formed in the side portion of the pump body in a penetrating mode, and a quick-filling structure is arranged in the oil inlet hole.

Compared with the prior art, the hydraulic brake pump has the advantages that through the structural design of the valve core, the through holes in the valve core and the springs, the oil in the oil outlet cavity can be quickly discharged and slowly returned, the continuous braking condition can be quickly responded, and the working efficiency and the braking effect of the brake pump are improved. In addition, the setting of gassing screw can open the exhaust hole when needs exhaust air, realizes the quick discharge of air, improves exhaust efficiency.

Drawings

Fig. 1 is a schematic sectional view of the hydraulic brake pump.

Fig. 2 is a schematic sectional view of the hydraulic brake pump at the oil outlet.

In the figure, 1, a pump body; 2. a piston; 3. an oil inlet cavity; 4. an oil outlet cavity; 5. an exhaust hole; 6. an oil outlet hole; 7. a deflating screw; 8. a valve core; 9. a spring; 10. a shoulder is formed; 11. a through hole; 12. an oil outlet gap; 13. an oil outlet joint; 14. a gasket; 15. and a quick-charging structure.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

As shown in fig. 1 and 2, the hydraulic brake pump includes a pump body 1 and a piston 2 disposed in the pump body 1, wherein the piston 2 divides an inner cavity of the pump body 1 into an oil inlet cavity 3 and an oil outlet cavity 4. The lateral part of the pump body 1 is penetrated and provided with an oil inlet hole, an oil outlet hole 6 and an exhaust hole 5, the exhaust hole 5 and the oil outlet hole 6 communicate the oil outlet cavity 4 to the outside of the pump body 1, and the oil inlet hole communicates the oil inlet cavity 3 to the outside of the pump body 1.

Wherein, the oil inlet is provided with a quick-charging structure 15, the quick-charging structure 15 is an existing structure, and the applicant can refer to a pressure-increasing quantitative quick-charging valve with the patent application number of 202120804201.2 or a quick-charging mechanism with the patent application number of 202122142313.9; the air exhaust hole 5 of the pump body 1 is in threaded connection with an air exhaust screw 7.

A valve core 8 and a spring 9 are arranged in the oil outlet 6, a convex annular convex shoulder 10 is arranged on the side wall of one end, close to the oil outlet cavity 4, of the oil outlet 6, the valve core 8 abuts against the convex shoulder 10 under the elastic force action of the spring 9 and forms sealing, a through hole 11 communicating the inner hole of the convex shoulder 10 with the oil outlet 6 is formed in the valve core 8 in a penetrating mode, and an oil outlet gap 12 is formed between the outer side of the valve core 8 and the inner wall of the oil outlet 6.

Specifically, the oil outlet hole 6 of the pump body 1 is further in threaded connection with a cylindrical oil outlet joint 13, the valve core 8 is cylindrical, the opening of the valve core 8 is located at one end far away from the shoulder 10, one end of the spring 9 extends into the valve core 8 and abuts against the inner side of one end, close to the shoulder 10, of the valve core 8, the other end of the spring 9 abuts against the oil outlet joint 13, an annular copper gasket 14 is sleeved on the outer side of the oil outlet joint 13, and the gasket 14 can be tightly pressed on the outer side of the pump body 1 when the oil outlet joint 13 is screwed in.

In the embodiment, in order to increase the oil discharging speed, a plurality of oil passing grooves are formed in the side portion of the valve core 8 in a penetrating manner, each oil passing groove is long-strip-shaped, the length direction of each oil passing groove is consistent with the axial direction of the valve core 8, and the plurality of oil passing grooves are uniformly distributed around the axis of the valve core 8; the end of the valve slide 8 facing the shoulder 10 is recessed around the through-opening 11 and forms a conical surface.

This hydraulic brake pump is when the braking, and the fluid of the chamber 4 that produces oil promotes case 8 and removes and compression spring 9, and fluid outwards flows from through-hole 11 and oil outlet gap 12, realizes the effect of producing oil fast for 2 both sides of piston form pressure differential fast, auxiliary braking.

After the braking, the piston 2 is reset, the valve core 8 is abutted against the convex shoulder 10 under the action of the elastic force of the spring 9 and forms a seal, and oil outside the oil outlet 6 can only return oil into the oil outlet cavity 4 through the through hole 11 on the valve core 8, and the oil return is slow. When the brake is performed again in a short time, the pressure difference is quickly formed on the two sides of the piston 2, and the working efficiency and the braking effect of the brake pump are improved.

The specific embodiments described herein are merely illustrative of the spirit of the utility model. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the utility model as defined in the appended claims.

Claims

1. A hydraulic brake pump comprises a pump body (1) and a piston (2) arranged in the pump body (1), wherein the piston (2) divides an inner cavity of the pump body (1) into an oil inlet cavity (3) and an oil outlet cavity (4), and is characterized in that an exhaust hole (5) and an oil outlet hole (6) which are communicated with the oil outlet cavity (4) to the outer side of the pump body (1) are formed in the side portion of the pump body (1) in a penetrating mode, an air release screw (7) is connected to the exhaust hole (5) of the pump body (1), a valve core (8) and a spring (9) are arranged in the oil outlet hole (6), a convex annular convex shoulder (10) protruding out is arranged on the side wall of one end, close to the oil outlet cavity (4), of the valve core (8) abuts against the convex shoulder (10) under the elastic force of the spring (9) to form sealing, a through hole (11) communicated with the inner hole of the convex shoulder (10) and the oil outlet hole (6) is formed in the valve core (8) in a penetrating mode, an oil outlet gap (12) is formed between the outer side of the valve core (8) and the inner wall of the oil outlet hole (6).

2. A hydraulic brake pump according to claim 1, characterized in that the spool (8) is barrel-shaped and opens at the end remote from the shoulder (10), and that one end of the spring (9) extends into the spool (8) and abuts against the inside of the spool (8) at the end near the shoulder (10).

3. A hydraulic brake pump according to claim 2, characterized in that the side of the spool (8) has an oil through groove extending therethrough, and the oil through groove has an elongated shape and a length direction thereof is aligned with the axial direction of the spool (8).

4. A hydraulic brake pump according to claim 2 or 3, characterized in that a cylindrical oil outlet joint (13) is further screwed to the oil outlet hole (6) of the pump body (1), and the other end of the spring (9) opposite to the spool (8) abuts against the oil outlet joint (13).

5. A hydraulic brake pump according to claim 4, characterized in that the outer end of the oil outlet joint (13) extends out of the pump body (1), an annular gasket (14) is sleeved on the outer side of the oil outlet joint (13), and the gasket (14) can be pressed on the outer side of the pump body (1) when the oil outlet joint (13) is screwed in.

6. A hydraulic brake pump according to claim 2 or 3, characterised in that the end of the spool (8) facing the shoulder (10) is recessed around the through-opening (11) and forms a conical surface.

7. The hydraulic brake pump of claim 1, 2 or 3, wherein an oil inlet communicated with the oil inlet cavity (3) is further formed in the side portion of the pump body (1) in a penetrating manner, and a quick-filling structure (15) is arranged in the oil inlet.