CN210565446U

CN210565446U - Clutch main cylinder structure formed by two parts of piston

Info

Publication number: CN210565446U
Application number: CN201921120980.3U
Authority: CN
Inventors: 何东; 许乐乐; 倪海洋; 方卫春; 顾江慧
Original assignee: Zhejiang Asia Pacific Mechanical and Electronic Co Ltd
Current assignee: Zhejiang Asia Pacific Mechanical and Electronic Co Ltd
Priority date: 2019-07-17
Filing date: 2019-07-17
Publication date: 2020-05-19
Anticipated expiration: 2029-07-17

Abstract

The utility model discloses a clutch master cylinder structure that specifically has piston two parts to constitute. The piston is designed into two parts, namely an end part close to the bottom of the cylinder hole of the cylinder body and an end part far away from the bottom of the cylinder hole of the cylinder body, the end part of the piston close to the bottom of the cylinder hole of the cylinder body is used as a head part, an outer flange is arranged in the circumferential direction, the diameter of the outer flange is larger than that of the end part of the piston far away from the bottom of the cylinder hole of the cylinder body, and the outer circumferential surface; and the piston is opened at the tip that is close to cylinder body cylinder hole bottom and is had the oil supply groove, and the oil supply groove extends to between main leather cup and the spacing pad from the tip that the piston is close to cylinder body cylinder hole bottom. The utility model discloses at the inside piston structure who has set up two parts of clutch master cylinder, the piston part that wherein is close to cylinder hole inside has the flange and does not change along with the cylinder diameter, need not to newly open the cylinder body, has saved the expense and the cost of redeveloping the cylinder body.

Description

Clutch main cylinder structure formed by two parts of piston

Technical Field

The utility model relates to a part of clutch system has especially related to a clutch master cylinder structure that specifically has piston two parts to constitute.

Background

In the existing clutch master cylinder development process, the size of the cylinder diameter is required to be changed under the condition of the same appearance, and generally, all accessories are required to be developed again, so that the cost is greatly increased.

SUMMERY OF THE UTILITY MODEL

Need redevelopment all accessories's current situation to change the cylinder diameter, the utility model provides a clutch master cylinder structure that specifically has piston two parts to constitute especially is arranged in the clutch master cylinder among the automobile clutch system.

The utility model discloses a following technical scheme can solve:

the utility model discloses a cylinder body, piston, spacing seat, main leather cup, vice leather cup and spacing pad, the piston designs into two parts, divide into the tip that is close to cylinder body jar hole bottom and the tip of keeping away from cylinder body jar hole bottom, and the piston is as the head and circumference sets up the outward flange near the tip of cylinder body jar hole bottom, makes the diameter of outward flange be greater than the diameter at the tip of keeping away from cylinder body jar hole bottom of piston, and the outer peripheral face of outward flange and the jar hole clearance fit of cylinder body; and the piston is opened at the tip that is close to cylinder body cylinder hole bottom and is had the oil supply groove, and the oil supply groove extends to between main leather cup and the spacing pad from the tip that the piston is close to cylinder body cylinder hole bottom.

The piston is opened at the tip that is close to cylinder body jar hole bottom and is had a plurality of oil supply grooves along circumference round, a plurality of oil supply grooves along circumference interval equipartition, every oil supply groove is seted up along the axial at the piston outer wall.

The end part of the piston far away from the bottom of the cylinder hole of the cylinder body is in clearance fit with the inner hole of the limiting seat.

The end part of the piston far away from the bottom of the cylinder hole of the cylinder body is in interference fit with the main leather cup and the auxiliary leather cup.

The size of the outer flange of the piston is not changed along with the change of different master cylinder diameters.

The utility model has the advantages that:

the utility model discloses at the inside piston structure who has set up two parts of clutch master cylinder, the piston part that wherein is close to cylinder hole inside has the flange and does not change along with the cylinder diameter, need not to newly open the cylinder body, has saved the expense and the cost of redeveloping the cylinder body.

Drawings

FIG. 1 is a schematic view of the internal structure of a clutch master cylinder of the present invention;

fig. 2 is a schematic structural view of the piston 2 of the present invention;

fig. 2(a) is a perspective view of the piston 2;

fig. 2(b) is a sectional view of the piston 2.

In the figure: 1. the cylinder body, 2, the piston, 3, main leather cup, 4, spacing pad, 5, vice leather cup, 6, spacing seat, a, the tip that is close to cylinder body jar hole bottom, b, the groove of mending oil, c, the tip that keeps away from cylinder body jar hole bottom.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1, the concrete implementation includes cylinder body 1, piston 2, spacing seat 6, main leather cup 3, vice leather cup 5 and spacing pad 4, its characterized in that: the piston 2 is of a cylindrical structure and is arranged in a cylinder hole of the cylinder body 1, the piston 2 is designed into two parts, as shown in FIG. 2, the two parts are divided into an end part a close to the bottom of the cylinder hole of the cylinder body and an end part c far away from the bottom of the cylinder hole of the cylinder body, the end part a close to the bottom of the cylinder hole of the cylinder body is used as a head part of the piston 2, an outer flange is arranged in the circumferential direction, the diameter of the outer flange is larger than that of the end part c far away from the bottom of the cylinder hole of the cylinder body of the piston 2, and the outer circumferential surface of;

as shown in FIG. 2, the piston 2 is provided with a circle of oil supplementing grooves b along the circumferential direction at the end part a close to the bottom of the cylinder hole of the cylinder body, the oil supplementing grooves b extend from the end part a of the piston 2 close to the bottom of the cylinder hole of the cylinder body to the position between the main leather cup 3 and the limit pad 4, and the oil supplementing grooves b are used for circulating the cylinder hole of the cylinder body 1 and an oil inlet of a clutch main cylinder to ensure the oil supplementing performance of the main cylinder. Concrete implementation piston 2 is opened at tip an that is close to cylinder body cylinder hole bottom and is had a plurality of oil supply grooves b along circumference round, and a plurality of oil supply grooves b are along circumference interval equipartition, and every oil supply groove b is seted up along the axial at 2 outer walls of piston to wear to locate the outward flange.

In specific implementation, the oil supplementing groove b of the piston 2 extends to the right side of the sealing lip of the leather cup by about 1.2 mm.

Piston 2 is keeping away from cylinder body cylinder hole bottom tip c and 6 hole clearance fit of spacing, direction when guaranteeing the motion of piston 2, and tip c and main leather cup 3, the 5 interference fit of vice leather cup guarantee the leakproofness of master cylinder.

In a specific implementation, the size of the outer flange of the piston 2 does not change with different master cylinder diameters, i.e. remains fixed. The size of the end c of the piston 2 far away from the bottom of the cylinder hole of the cylinder body changes with the change of the cylinder diameter of different main cylinders, the size of the end c of the piston 2 far away from the bottom of the cylinder hole of the cylinder body determines the size of the cylinder diameter of the main cylinder, and the outer diameter of the end c of the piston 2 far away from the bottom of the cylinder hole of the cylinder body is processed according to the size requirement of the inner diameter of the cylinder.

Therefore, the utility model discloses, when the cylinder diameter changes, need not to newly open cylinder body 1, saved the relevant expense and the manufacturing cost who redevelops cylinder body 1.

The above detailed description is provided for illustrative purposes, and is not intended to limit the present invention, and any modifications and variations of the present invention are within the spirit and scope of the following claims.

Claims

1. The utility model provides a clutch master cylinder structure that concrete has piston two parts to constitute, includes cylinder body (1), piston (2), spacing seat (6), main leather cup (3), vice leather cup (5) and spacing pad (4), its characterized in that: the piston (2) is designed into two parts, namely an end part (a) close to the bottom of the cylinder hole and an end part (c) far away from the bottom of the cylinder hole, the piston (2) is used as a head part at the end part (a) close to the bottom of the cylinder hole and is circumferentially provided with an outer flange, the diameter of the outer flange is larger than that of the end part (c) far away from the bottom of the cylinder hole of the piston (2), and the outer peripheral surface of the outer flange is in clearance fit with the cylinder hole of the cylinder (1); and the piston (2) is opened at tip (a) that is close to cylinder body cylinder hole bottom has the oil supply groove (b), and oil supply groove (b) extends to between main leather cup (3) and spacing pad (4) from piston (2) at tip (a) that is close to cylinder body cylinder hole bottom.

2. A two-part clutch master cylinder structure, in particular a piston, as claimed in claim 1, wherein: piston (2) open at tip (a) that is close to cylinder body cylinder hole bottom have along a plurality of oil supply grooves (b) of circumference round, a plurality of oil supply grooves (b) along circumference interval equipartition, every oil supply groove (b) is seted up along the axial at piston (2) outer wall.

3. A two-part clutch master cylinder structure, in particular a piston, as claimed in claim 1, wherein: the piston (2) is in clearance fit with an inner hole of the limiting seat (6) at the end part (c) far away from the bottom of the cylinder hole of the cylinder body.

4. A two-part clutch master cylinder structure, in particular a piston, as claimed in claim 1, wherein: the piston (2) is in interference fit with the main leather cup (3) and the auxiliary leather cup (5) at the end part (c) far away from the bottom of the cylinder hole of the cylinder body.

5. A two-part clutch master cylinder structure, in particular a piston, as claimed in claim 1, wherein: the size of the outer flange of the piston (2) is not changed along with the change of different master cylinder diameters.