Automobile clutch slave cylinder with novel structure

Abstract

The automobile clutch slave cylinder of the novel structure comprises a pump body structure, a return spring structure, a piston structure, a leather cup structure and a push rod, the piston structure is located in the pump body structure, an oil inlet hole is formed in one end of the pump body structure, the push rod is located at the other end of the pump body structure, and one end of the push rod abuts against the piston structure; an annular groove is formed in the inner wall of the pump body, and the leather cup structure is located in the annular groove. The clutch slave cylinder solves the problems that most clutch slave cylinders at present are complex in structure, machining difficulty of the inner wall of the cylinder body is large, leather cups are prone to abrasion, and the service life is short.

Description

TECHNICAL FIELD

[0001] The utility model relates to a clutch pump of automobile, especially a clutch pump of automobile of novel structure. BACKGROUND

[0002] The clutch pump is a core component in the hydraulic clutch system, responsible for converting the main pump pressure into mechanical movement of the separation bearing, realizing the stable separation of the clutch. In industrial scenarios, its durability and sealing directly affect the transmission efficiency of heavy machinery, commercial vehicles and other equipment. The clutch pump has a piston inside, and the piston and the pump body have a cup, which has a sealing effect, but the piston inside the clutch pump needs to do reciprocating motion, and the cup inside the cylinder does not contact the brake fluid, which is easy to wear and tear, affecting the stability of the overall operation. SUMMARY

[0003] The utility model discloses a clutch pump of automobile of novel structure, solve the structure of most clutch pump at present, the difficulty of cylinder inner wall processing is big, the cup is easy to wear and tear, the service life is low and other problems.

[0004] To solve the above technical problems, the utility model adopts the following technical scheme:

[0005] A clutch pump of automobile of novel structure, including pump body structure, return spring structure, piston structure, cup structure and push rod, the piston structure is located in the pump body structure, one end of the pump body structure is provided with oil inlet hole, the push rod is located at the other end of the pump body structure, and one end of the push rod abuts against the piston structure;The inner wall of the pump body is provided with an annular groove, and the cup structure is located in the annular groove.

[0006] In the foregoing clutch pump of automobile of novel structure, the inner wall of the pump body is provided with an inner ring groove for accommodating lubricating grease, and the inner ring groove is located between the annular groove and the push rod.

[0007] In the foregoing clutch pump of automobile of novel structure, the pump body structure is provided with a return spring, one end of the return spring abuts against the inner wall of the pump body structure, and the other end of the return spring abuts against the piston structure.

[0008] In the foregoing clutch pump of automobile of novel structure, the piston structure has a spring groove, the groove body of the spring groove has an inner inclined surface, and one end of the return spring abuts against the inner inclined surface.

[0009] In the foregoing clutch pump of automobile of novel structure, the piston structure has an oil passing groove on the spring groove, and the outer wall of the piston structure has an outer inclined surface close to one end of the oil inlet hole.

[0010] The cross section of the cup structure is V-shaped, one end of the V-shaped cup structure abuts against the groove body of the annular groove, and the other end of the V-shaped cup structure abuts against the piston structure, and the cup structure is in interference fit with the piston structure.

[0011] The inner wall of the pump body structure has a spiral groove between the annular groove and the oil inlet hole.

[0012] The V-shaped cross section cup structure has a longer end abutting against the pump body structure and a shorter end abutting against the piston structure, and the cup structure has an oil passing groove.

[0013] Compared with the prior art, the present application solves the problems of complex structure, difficult processing of the cylinder inner wall, easy wear of the cup, and low service life of the clutch pump. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a structural schematic diagram of an embodiment of the present application;

[0015] Figure 2 is a structural schematic diagram of an embodiment of the piston structure;

[0016] Figure 3 is a structural schematic diagram of an embodiment of the cup structure;

[0017] Figure 4 is a structural schematic diagram of an embodiment of the pump body structure.

[0018] Reference signs: 1 - oil inlet hole, 2 - return spring, 3 - piston structure, 4 - cup structure, 5 - pump body structure, 6 - elastic retainer, 7 - dust cover, 8 - push rod, 9 - screw hole, 10 - inner ring groove, 11 - fixing hole, 12 - outer inclined surface, 13 - oil passing groove, 14 - inner inclined surface, 15 - oil passing groove, 16 - spiral groove, 17 - spring groove, 18 - annular groove.

[0019] The present application will be further described below in combination with the drawings and specific embodiments. DETAILED DESCRIPTION

[0020] Embodiment 1 of the present application: a new structure of automobile clutch pump, comprising a pump body structure 5, a return spring 2 structure, a piston structure 3, a cup structure 4 and a push rod 8, the piston structure 3 is located in the pump body structure 5, one end of the pump body structure 5 is provided with an oil inlet hole 1, the push rod 8 is located at the other end of the pump body structure 5, and one end of the push rod 8 abuts against the piston structure 3; the inner wall of the pump body is provided with an annular groove 18, and the cup structure 4 is located in the annular groove 18.

[0021] The inner wall of the pump body is provided with an inner ring groove 10 for accommodating lubricating grease, and the inner ring groove 10 is located between the annular groove 18 and the push rod 8. The pump body structure 5 is provided with a return spring 2, one end of the return spring 2 abutting against the inner wall of the pump body structure 5, and the other end of the return spring 2 abutting against the piston structure 3. The piston structure 3 has a spring groove 17, and the groove body of the spring groove 17 has an inner inclined surface 14, and one end of the return spring 2 abuts against the inner inclined surface 14.

[0022] Embodiment 2: A new structure of automobile clutch master cylinder, comprising a pump body structure 5, a return spring 2 structure, a piston structure 3, a cup structure 4 and a push rod 8, the piston structure 3 is located in the pump body structure 5, one end of the pump body structure 5 is provided with an oil inlet hole 1, the push rod 8 is located at the other end of the pump body structure 5, and one end of the push rod 8 abuts against the piston structure 3; the inner wall of the pump body is provided with an annular groove 18, and the cup structure 4 is located in the annular groove 18.

[0023] The inner wall of the pump body is provided with an inner ring groove 10 for accommodating lubricating grease, and the inner ring groove 10 is located between the annular groove 18 and the push rod 8. The pump body structure 5 is provided with a return spring 2, one end of the return spring 2 abutting against the inner wall of the pump body structure 5, and the other end of the return spring 2 abutting against the piston structure 3. The piston structure 3 has a spring groove 17, and the groove body of the spring groove 17 has an inner inclined surface 14, and one end of the return spring 2 abuts against the inner inclined surface 14.

[0024] The piston structure 3 has an oil passing groove 13 on the spring groove 17, and the outer wall of the piston structure 3 has an outer inclined surface 12 near one end of the oil inlet hole 1. The cross section of the cup structure 4 is V-shaped, one end of the V-shaped cup structure 4 abuts against the groove body of the annular groove 18, and the other end of the V-shaped cup structure 4 abuts against the piston structure 3, and the cup structure 4 is in interference fit with the piston structure 3. The inner wall of the pump body structure 5 has a spiral groove 16, and the spiral groove 16 is located between the annular groove 18 and the oil inlet hole 1 of the inner wall of the pump body structure 5. The cup structure 4 with V-shaped cross section has a longer end abutting against the pump body structure 5 and a shorter end abutting against the piston structure 3, and the cup structure 4 has an oil passing groove 15.

[0025] The working principle of one embodiment of the utility model: clutch pump is fixed on the vehicle body by two fixed holes 11, is constituted by return spring 2, piston structure 3 and push rod 8 work stroke L1, is constituted by pump body structure 5, return spring 2 and piston structure 3 reserved stroke L2.In the inner ring groove 10 on pump body structure 5 inside coating appropriate amount of lubricating grease, is used for lubricating piston structure 3 and the inner surface of pump body structure 5, reduces abrasion, increases service life.Elastic baffle 6 is loaded into pump body structure 5 baffle groove, dust cover 7 big head is loaded on pump body structure 5, small head is loaded on push rod 8, push rod 8 and piston structure 3 contact fit.Clutch pump is discharged from air brake fluid by air release screw hole 9, is pushed piston structure 3 by high pressure oil import and export oil hole 1, piston structure 3 pushes push rod 8 and so on and reciprocates.

[0026] The outer surface on piston structure 3 needs to be finely ground, the inner inclined surface 14 on piston structure 3 is used to fix return spring 2, the oil passage 13 of piston structure 3 is used for brake fluid circulation, the outer inclined surface 12 on piston structure 3 is conducive to the assembly with piston structure 3, and piston structure 3 is not easy to be damaged. The interference part on the leather cup structure 4 with piston structure 3 is conducive to sliding hydraulic sealing, the interference part on the leather cup structure 4 with pump body structure 5 is conducive to static hydraulic sealing, the support boss on the leather cup structure 4 is used to support the pump body structure 5 and increase the working strength of the leather cup structure 4, and the oil passage groove 15 on the leather cup structure 4 is used for brake fluid circulation. The inner surface of pump body structure 5 needs to be finely turned, the outer surface reinforcing boss on pump body structure 5 is used to increase the strength of pump body structure 5, the inner ring groove 10 on pump body structure 5 is used to store appropriate amount of lubricating grease, and the spiral groove 16 is used for brake fluid circulation.

Claims

1. A new structure of automobile clutch master cylinder, characterized by, It comprises a pump body structure (5), a return spring (2) structure, a piston structure (3), a leather cup structure (4) and a push rod (8), the piston structure (3) is located in the pump body structure (5), one end of the pump body structure (5) is provided with an oil inlet hole (1), the push rod (8) is located at the other end of the pump body structure (5), one end of the push rod (8) abuts against the piston structure (3); The inner wall of the pump body is provided with an annular groove (18), and the leather cup structure (4) is located in the annular groove (18).

2. A new type of automotive clutch master cylinder of claim 1, characterized in that, The inner wall of the pump body is provided with an inner ring groove (10) for accommodating lubricating grease, and the inner ring groove (10) is located between the annular groove (18) and the push rod (8).

3. A new type of automotive clutch master cylinder of claim 1, characterized in that, The pump body structure (5) is provided with a return spring (2), one end of the return spring (2) abuts against the inner wall of the pump body structure (5), and the other end of the return spring (2) abuts against the piston structure (3).

4. A new type of automotive clutch master cylinder of claim 3, characterized in that, The piston structure (3) has a spring groove (17), and the groove body of the spring groove (17) has an inner inclined surface (14), and one end of the return spring (2) abuts against the inner inclined surface (14).

5. A new type of automotive clutch master cylinder of claim 4, characterized in that, The piston structure (3) has an oil passing groove (13) on the spring groove (17), and the outer wall of the piston structure (3) has an outer inclined surface (12) near one end of the oil inlet hole (1).

6. A new type of automotive clutch master cylinder of claim 1, characterized by, The cross section of the leather cup structure (4) is V-shaped, one end of the V-shaped leather cup structure (4) abuts against the groove body of the annular groove (18), and the other end of the V-shaped leather cup structure (4) abuts against the piston structure (3), and the leather cup structure (4) is in interference fit with the piston structure (3).

7. A new type of automotive clutch master cylinder of claim 1, characterized in that, The inner wall of the pump body structure (5) has a spiral groove (16), and the spiral groove (16) is located between the annular groove (18) and the oil inlet hole (1) of the inner wall of the pump body structure (5).

8. A new type of automotive clutch master cylinder of claim 6, characterized in that, The V-shaped cross section of the leather cup structure (4) has one end abutting against the pump body structure (5) longer and the other end abutting against the piston structure (3) shorter, and the leather cup structure (4) has an oil passing groove (15).

Images