A clutch master pump with throttling structure

Abstract

The utility model relates to the technical field of clutch master pump, and discloses a clutch master pump with a throttling structure, including a pump body, an oil inlet pipe and an oil outlet pipe are arranged on the outer surface of the pump body, a throttling assembly is arranged inside the oil outlet pipe, an oil supply pipe is installed inside the oil inlet pipe, a return spring is installed inside the pump body, an oil inlet valve is installed at one end of the return spring, a piston is installed at one end of the oil inlet valve away from the return spring, a push rod is installed at one end of the piston away from the oil inlet valve, and one end of the push rod penetrates the pump body and extends outward. The utility model can adjust the flow of brake fluid through the coordinated use of a spring seat, a valve spring, an oil outlet joint and a valve core, and limit and control the flow of brake fluid by reducing the cross-sectional area of ​​the flow channel, so that the brake fluid can enter the oil chamber of the clutch booster at a uniform speed, thereby achieving the effect of adjusting the flow of brake fluid.

Description

Technical Field

[0001] The utility model relates to the technical field of a clutch master cylinder, in particular to a clutch master cylinder with a throttling structure. Background Art

[0002] The clutch master cylinder is located between the clutch pedal and the clutch booster. Its function is to control the oil and air intake into the booster by collecting the pedal stroke information, thereby controlling the locking and release of the clutch.

[0003] The utility model patent application document with publication number "CN205859002U" discloses a clutch master pump, which is mainly composed of a pump body, a piston, a center valve and a return spring. This technical solution can effectively improve the situation where the piston is prone to eccentric wear with the pump body during movement, effectively extend the service life of the clutch master pump, and improve the comfort of clutch master pump operation.

[0004] The clutch master cylinder disclosed in the above document has the following defects: when the clutch pedal is pressed, the clutch master cylinder push rod pushes the piston to the left, the first sealing ring passes over the compensation hole, the center valve is pressurized and closed, oil pressure is established in the working chamber, and the brake fluid in the working chamber is pressed into the oil chamber of the clutch booster through the pipeline. In this process, the flow rate of the brake fluid is determined by the force with which the user steps on the clutch pedal, which results in the brake fluid being unable to enter the oil chamber of the clutch booster at a uniform speed, resulting in poor practicality.

[0005] It can be seen from this that the existing clutch master cylinder does not have a structure that allows the brake fluid to flow evenly, and it is necessary to improve the existing deficiencies and provide a clutch master cylinder with a throttling structure. Utility Model Content

[0006] The utility model aims to provide a clutch master cylinder with a throttling structure to solve the problems raised in the above-mentioned background technology.

[0007] In order to solve the above technical problems, the utility model is achieved through the following technical solutions:

[0008] The utility model is a clutch master pump with a throttling structure, comprising a pump body, an oil inlet pipe and an oil outlet pipe are arranged on the outer surface of the pump body, a throttling component is arranged inside the oil outlet pipe, an oil supply pipe is installed inside the oil inlet pipe, a return spring is installed inside the pump body, an oil inlet valve is installed at one end of the return spring, a piston is installed at one end of the oil inlet valve away from the return spring, a push rod is installed at one end of the piston away from the oil inlet valve, and one end of the push rod passes through the pump body and extends outward.

[0009] Furthermore, a cover body is installed at one end of the pump body, a through hole is opened in the middle of the cover body, and a push rod is slidably connected inside the through hole.

[0010] Furthermore, the throttling assembly includes a spring seat, which is installed inside the oil outlet pipe, a valve spring is installed on the lower surface of the spring seat, an oil outlet joint is installed on the upper surface of the spring seat, a guide tube is provided in the middle of the spring seat, and a valve core is slidably connected to the inside of the guide tube.

[0011] Furthermore, the valve core includes a base and a column, the upper surface of the base is provided with the column, the upper surface of the base is installed with a valve spring, and the outer surface of the column is provided with an inclined surface.

[0012] Furthermore, a connecting piece is installed at one end of the push rod away from the piston.

[0013] Furthermore, a connecting seat is provided on the outer surface of the pump body, and a mounting hole is opened in the middle of the connecting seat.

[0014] The utility model has the following beneficial effects:

[0015] (1) The utility model can adjust the flow rate of brake fluid by using the spring seat, valve spring, oil outlet joint and valve core in coordination. The flow rate of brake fluid is limited and controlled by reducing the cross-sectional area of ​​the flow channel, so that the brake fluid can enter the oil chamber of the clutch booster at a uniform speed, thereby achieving the effect of regulating the flow of brake fluid.

[0016] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a cross-sectional view of the overall structure of the utility model;

[0020] Figure 3 This is an exploded diagram of the throttling component structure of the utility model;

[0021] Figure 4 This is a schematic diagram of the valve core structure of the utility model;

[0022] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0023] In the figure: 1. pump body; 101. oil inlet pipe; 102. oil outlet pipe; 103. connecting seat; 104. mounting hole; 2. throttling assembly; 201. spring seat; 202. valve spring; 203. oil outlet joint; 204. valve core; 20401. base; 20402. cylinder; 20403. inclined surface; 3. oil supply pipe; 4. return spring; 5. oil inlet valve; 6. piston; 7. push rod; 8. cover body; 9. connecting piece. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1 - Figure 4 As shown, the utility model is a clutch master pump with a throttling structure, comprising a pump body 1, an oil inlet pipe 101 and an oil outlet pipe 102 are arranged on the outer surface of the pump body 1, a throttling assembly 2 is arranged inside the oil outlet pipe 102, an oil supply pipe 3 is installed inside the oil inlet pipe 101, a return spring 4 is installed inside the pump body 1, an oil inlet valve 5 is installed at one end of the return spring 4, a piston 6 is installed at one end of the oil inlet valve 5 away from the return spring 4, a push rod 7 is installed at one end of the piston 6 away from the oil inlet valve 5, and one end of the push rod 7 passes through the pump body 1 and extends outward;

[0026] A connection seat 103 is provided on the outer surface of the pump body 1, and a mounting hole 104 is opened in the middle of the connection seat 103;

[0027] The throttling assembly 2 includes a spring seat 201, which is installed inside the oil outlet pipeline 102, a valve spring 202 is installed on the lower surface of the spring seat 201, an oil outlet joint 203 is installed on the upper surface of the spring seat 201, a guide tube is provided in the middle of the spring seat 201, and a valve core 204 is slidably connected inside the guide tube;

[0028] The valve core 204 includes a base 20401 and a column 20402. The column 20402 is provided on the upper surface of the base 20401. The valve spring 202 is installed on the upper surface of the base 20401. The outer surface of the column 20402 is provided with an inclined surface 20403.

[0029] The spring seat 201, the valve spring 202, the oil outlet connector 203 and the valve core 204 are used in coordination to adjust the flow of the brake fluid. The flow of the brake fluid is limited and controlled by reducing the cross-sectional area of ​​the flow channel, so that the brake fluid can enter the oil chamber of the clutch booster at a uniform speed, thereby achieving the effect of adjusting the flow of the brake fluid.

[0030] A cover 8 is installed at one end of the pump body 1, a through hole is opened in the middle of the cover 8, and a push rod 7 is slidably connected inside the through hole;

[0031] A connecting piece 9 is installed at one end of the push rod 7 away from the piston 6 .

[0032] When in use, first connect the oil outlet joint 203, the connecting piece 9 and the oil supply pipe 3 to the external clutch booster, the clutch pedal and the oil pot respectively. After installation, fix the pump body 1 through the connecting seat 103. During use, by stepping on the clutch pedal, the push rod 7 pushes the piston 6 to move. When the piston 6 passes over the oil inlet hole of the oil inlet pipe 101, the oil inlet valve 5 is pressurized and closed, and oil pressure is formed inside the pump body 1. Continue to step on the clutch pedal, and the brake fluid in the pump body 1 enters the interior of the oil outlet pipe 102. When the brake fluid enters the interior of the oil outlet pipe 102, the brake fluid pushes the valve core 204 to move upward, so that the base 20401 squeezes the valve spring 202. When the valve spring 202 is fully compressed, the column 20402 is installed in the guide pipe so that the guide pipe The flow tube forms a throttle hole, and the brake fluid is pressed into the oil chamber of the clutch booster through the throttle hole and the oil outlet joint 203, pushing the clutch to disengage. When the clutch pedal is released, the valve core 204 is reset under the action of oil pressure and valve spring 202, and the piston 6 is reset under the action of oil pressure and return spring 4. At this time, the return speed is faster than the return speed of the brake fluid in the pump body 1, and a negative pressure is formed in the oil circuit. The oil inlet valve 5 is opened, and the brake fluid in the pump body 1 flows back to the oil pot. The flow rate of the brake fluid can be adjusted by the coordinated use of the spring seat 201, the valve spring 202, the oil outlet joint 203 and the valve core 204. The flow rate of the brake fluid is limited and controlled by reducing the cross-sectional area of ​​the flow channel, so that the brake fluid can enter the oil chamber of the clutch booster at a uniform speed, thereby achieving the effect of regulating the flow of the brake fluid.

[0033] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is only limited by the claims and their full scope and equivalents.

Claims

1. A clutch master pump with a throttling structure, comprising a pump body (1), characterized in that: An oil inlet pipe (101) and an oil outlet pipe (102) are provided on the outer surface of the pump body (1); a throttling assembly (2) is provided inside the oil outlet pipe (102); an oil supply pipe (3) is installed inside the oil inlet pipe (101); a return spring (4) is installed inside the pump body (1); an oil inlet valve (5) is installed at one end of the return spring (4); a piston (6) is installed at one end of the oil inlet valve (5) away from the return spring (4); a push rod (7) is installed at one end of the piston (6) away from the oil inlet valve (5); one end of the push rod (7) passes through the pump body (1) and extends outward; The throttling assembly (2) comprises a spring seat (201), the spring seat (201) being installed inside the oil outlet pipeline (102), a valve spring (202) being installed on the lower surface of the spring seat (201), an oil outlet joint (203) being installed on the upper surface of the spring seat (201), a flow guide tube being provided in the middle of the spring seat (201), and a valve core (204) being slidably connected inside the flow guide tube; The valve core (204) comprises a base (20401) and a column (20402); the column (20402) is provided on the upper surface of the base (20401); a valve spring (202) is installed on the upper surface of the base (20401); and an inclined surface (20403) is provided on the outer surface of the column (20402).

2. A clutch master cylinder with a throttling structure according to claim 1, characterized in that: A cover body (8) is mounted on one end of the pump body (1); a through hole is provided in the middle of the cover body (8); a push rod (7) is slidably connected to the interior of the through hole.

3. A clutch master cylinder with a throttling structure according to claim 1, characterized in that: A connecting piece (9) is mounted on one end of the push rod (7) away from the piston (6).

4. The clutch master cylinder with throttling structure according to claim 1, characterized in that: The outer surface of the pump body (1) is provided with a connection seat (103), and a mounting hole (104) is opened in the middle of the connection seat (103).

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