CN219733614U - Split type piston and clutch master cylinder - Google Patents
Split type piston and clutch master cylinder Download PDFInfo
- Publication number
- CN219733614U CN219733614U CN202223431961.7U CN202223431961U CN219733614U CN 219733614 U CN219733614 U CN 219733614U CN 202223431961 U CN202223431961 U CN 202223431961U CN 219733614 U CN219733614 U CN 219733614U
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- piston
- main
- leather cup
- split
- end part
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- 239000010985 leather Substances 0.000 claims abstract description 51
- 239000007788 liquid Substances 0.000 claims description 7
- 230000013011 mating Effects 0.000 claims description 3
- 239000012530 fluid Substances 0.000 description 6
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
Abstract
The utility model discloses a split type piston and clutch master cylinder, comprising: the piston body comprises a first end part and a second end part, wherein the first end part is closer to a working cavity inner spring of the clutch main pump relative to the second end part in the axial direction of the piston body, the spring seat is detachably and fixedly arranged on the first end part of the piston body to jointly form a first combined structure with a main leather cup groove on the outer side wall, the main leather cup groove is positioned at the joint of the spring seat and the first end part of the piston body, and the push rod seat is detachably and fixedly arranged on the second end part of the piston body to jointly form a second combined structure. The utility model solves the problems that a leather cup with a framework is developed in the prior art, but the leather cup cannot be assembled on a piston in a traditional mode through stretching, and the assembly requirement of the leather cup cannot be met by a traditional piston.
Description
Technical Field
The utility model belongs to the field of brake clutch master pumps, and particularly relates to a split type piston and a clutch master pump.
Background
In order to improve the tightness of the clutch master cylinder, a leather cup with a framework is developed in the prior art, but the leather cup cannot be assembled on a piston in a traditional stretching mode, and the assembly requirement of the leather cup cannot be met by a traditional piston.
Disclosure of Invention
Aiming at the defects in the prior art, the split type piston and the clutch master cylinder provided by the utility model are characterized in that the split type piston structure consists of a spring seat, a piston main body and a push rod seat, so that the problem that a leather cup with a framework is developed in the prior art, but the leather cup cannot be assembled on the piston in a traditional mode through stretching, and the assembly requirement of the leather cup cannot be met by the traditional piston is solved.
The utility model aims at realizing the following technical scheme:
in a first aspect, a split piston is provided, adapted for use in a clutch master cylinder, comprising:
a piston body including a first end and a second end, wherein the first end is closer to an in-working chamber spring of the clutch master pump than the second end in an axial direction of the piston body;
the spring seat is detachably and fixedly arranged on the first end part of the piston main body so as to jointly form a first combined structure with a main leather cup groove on the outer side wall, and the main leather cup groove is positioned at the joint of the spring seat and the first end part of the piston body;
the push rod seat is detachably and fixedly arranged on the second end part of the piston main body so as to form a second combined structure together.
In certain embodiments, the second coupling structure has a secondary cup groove on an outer sidewall thereof, the secondary cup groove being located where the spring seat meets the second end of the piston body.
In some embodiments, the first end of the piston body has a first chamfer segment at the intersection of the outer sidewall and the end surface for the main cup to be introduced into the main cup groove of the first joint structure.
In some embodiments, the second end of the piston body has a second chamfer segment at the intersection of the outer sidewall and the end surface for the secondary cup to be introduced into the secondary cup groove of the second mating structure.
In some embodiments, the spring seat has a projection thereon that engages a spring within a working chamber of the total clutch pump.
In certain embodiments, further comprising: and a first screw axially fixing the spring seat to the first end of the piston body along the piston body.
In some embodiments, the pushrod seat has a spherical arcuate surface on an end surface distal from the piston body.
In certain embodiments, further comprising: and the second screw is used for fixedly connecting the push rod seat with the second end part of the piston body along the axial direction of the piston body.
In a second aspect, a clutch master cylinder includes:
the working cavity is communicated with the branch pump, and the liquid storage cavity is communicated with the working cavity;
the split type piston is connected with the working cavity wall of the master pump body in a sliding manner;
the push rod and connecting fork assembly is used for connecting a push rod seat of the split type piston with a pedal arm, and under the action of the pedal arm, the push rod and connecting fork assembly drives the split type piston to move in a working cavity of the main pump body so as to regulate and control the pressure in the working cavity of the main pump body;
a spring which connects the spring seat of the split piston with the working chamber wall of the main pump body in the axial direction of the split piston, and
the main leather cup is arranged in a main leather cup groove of a first combined structure of the split type piston, the main leather cup moves together with the split type piston and the movement path comprises a cavity section where the communication port is located, and the communication port is blocked when the main leather cup moves to the cavity section where the communication port is located.
In certain embodiments, further comprising: and the auxiliary leather cup is arranged in the auxiliary leather cup groove of the second combined structure of the split type piston and is contacted with the cavity wall of the working cavity of the main pump body.
The beneficial effects of the utility model are as follows: the split type piston structure comprises a spring seat, a piston main body and a push rod seat, wherein the spring seat and the push rod seat are respectively and detachably arranged at two ends of the piston main body, and a main leather cup groove is formed near the two ends of the piston main body together, so that the assembly requirement of a leather cup with a framework type and the like, which is not provided with a tensile leather cup, is met, the sealing performance is improved, the problem that the leather cup with the framework is developed in the prior art, but the leather cup cannot be assembled on the piston in a traditional manner, and the traditional piston cannot meet the assembly requirement of the leather cup is solved.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions of the prior art, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is an assembly diagram of a split piston with a primary cup and a secondary cup provided in an exemplary embodiment;
FIG. 2 is a schematic diagram of a clutch master cylinder provided in an exemplary embodiment;
reference numerals: 10. a split piston; 101. a piston body; 1011. a first end; 10111. a first chamfer segment; 1012. a second end; 10121. a second chamfer segment; 102. a spring seat; 1021. a protruding portion; 103. a push rod seat; 104. a main leather cup groove; 105. an auxiliary leather cup groove; 106. a first screw; 107. a second screw; 20. a main pump body; 201. a working chamber; 2011. an oil outlet; 202. a liquid storage cavity; 2021. an oil inlet; 203. a communication port; 30. a push rod and clevis assembly; 301. a push rod; 302. a connecting fork; 40. a spring; 50. a main leather cup; 60. an auxiliary leather cup; 70. a gap.
Detailed Description
For a better understanding of the technical solution of the present utility model, the following detailed description of the embodiments of the present utility model refers to the accompanying drawings.
It should be understood that the described embodiments are merely some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The terminology used in the embodiments of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used in this application and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
As shown in fig. 1, in one embodiment, a split piston is provided, adapted for use in a clutch master cylinder, comprising: a piston body 101, a spring seat 102, and a pushrod seat 103.
The piston body 101 comprises a first end 1011 and a second end 1012 and an intermediate plug section connected between the first end 1011 and the second end 1012, wherein the first end 1011 is closer to the spring 40 in the working chamber 201 of the total clutch pump than the second end 1012 in the axial direction of the piston body 101, and the second end 1012 is closer to the push rod 301. In one embodiment, the spring seat 102 has a protrusion 1021 thereon which engages with the spring 40 in the working chamber 201 of the main clutch pump, and one end of the spring 40 in the working chamber 201 of the main clutch pump is sleeved on the protrusion 1021 of the spring seat 102, and the protrusion 1021 constitutes the left side portion of the spring seat 102. In one embodiment, the spring seat 102 has a screw hole penetrating along the axial direction of the piston body 101, and the piston body 101 also has a screw hole at an axially corresponding position of the first end 1011, and the split piston 10 further includes: the right end of the first screw 106 is screwed out of the screw hole of the spring seat 102 and into the screw hole of the first end 1011 of the piston body 101, thereby achieving the purpose of fixedly connecting the spring seat 102 and the first end 1011 of the piston body along the axial direction of the piston body 101. In one embodiment, the end surface (right side surface) of the push rod seat 103 away from the piston main body 101 has a spherical cambered surface, and the spherical cambered surface of the push rod seat 103 is in fit connection with the spherical end of the push rod 301. In one embodiment, the pushrod base 103 has a threaded bore extending therethrough along the axial direction of the piston body 101, and the piston body 101 also has a threaded bore at an axially corresponding location on the second end 1012, and the split piston 10 further includes: a second screw 107, wherein the left end of the second screw 107 is screwed out of the screw hole of the push rod seat 103 and into the screw hole of the second end 1012 of the piston body 101, so as to achieve the purpose of fixedly connecting the push rod seat 103 and the second end 1012 of the piston body along the axial direction of the piston body 101.
The spring seat 102 is detachably and fixedly arranged on the first end 1011 of the piston main body 101 to jointly form a first combined structure with a main leather cup 50 groove 104 on the outer side wall, and the main leather cup 50 groove 104 is positioned at the joint of the spring seat 102 and the first end 1011 of the piston body; in one embodiment, the first end 1011 of the piston body 101 has a first chamfer 10111 at the intersection of the outer sidewall and the end face for the introduction of the primary cup 50 into the primary cup 50 slot 104 of the first joint structure, the first chamfer 10111 facilitating the assembly of the primary cup 50 in the primary cup 50 slot 104 of the first joint structure.
The pushrod seat 103 is removably secured to the second end 1012 of the piston body 101 to cooperatively form a second engagement structure.
In one embodiment, the second coupling structure has a secondary cup 60 slot 105 in the outer sidewall, the secondary cup 60 slot 105 being located where the spring seat 102 meets the second end 1012 of the piston body.
In one embodiment, the second end 1012 of the piston body 101 has a second chamfer segment 10121 at the intersection of the outer sidewall and the end surface for the secondary cup 60 to be introduced into the secondary cup 60 groove 105 of the second mating structure. The second chamfer segment 10121 facilitates assembly of the secondary cup 60 in the secondary cup 60 slot 105 of the second coupling structure.
The split type piston 10 structure comprises a spring seat 102, a piston main body 101 and a push rod seat 103, wherein the spring seat 102 and the push rod seat 103 are respectively and detachably arranged at two ends of the piston main body 101, and a main leather cup 50 groove 104 is formed near the two ends of the piston main body 101 together, so that the assembly requirement of a leather cup with a framework type and the like without stretching property is met, the sealing performance is improved, the problem that the leather cup with the framework is developed in the prior art, however, the leather cup cannot be assembled on a piston in a traditional manner through stretching, and the assembly requirement of the leather cup cannot be met by a traditional piston is solved.
As shown in fig. 2, in an embodiment, a clutch master cylinder is provided as an application scenario of the split piston 10, the clutch master cylinder includes: the main pump body 20, the split piston 10, the push rod and clevis assembly 30 and the main cup 50 in the above embodiments.
The inside of the main pump body 20 is provided with a working cavity 201 communicated with the branch pump and a liquid storage cavity 202 communicated with the working cavity 201, and a communication port 203 communicated with the liquid storage cavity 202 on the working cavity 201 is positioned on the cavity wall of the working cavity 201 of the main pump body 20; the left end of the working chamber 201 of the main pump body 20 is provided with an oil outlet 2011 communicated with a branch pump, and the branch pump is connected with an oil cup through an oil inlet 2021.
The split piston 10 is in sliding connection with the cavity wall of the working cavity 201 of the master cylinder body 20;
the push rod and connecting fork assembly 30 connects the push rod seat 103 of the split piston 10 with a pedal arm, and under the action of the pedal arm, the push rod and connecting fork assembly 30 drives the split piston 10 to move in the working cavity 201 of the main pump body 20 so as to regulate and control the pressure in the working cavity 201 of the main pump body 20; the push rod and connecting fork assembly 30 comprises a push rod 301 and a connecting fork 302, the right end of the push rod 301 is connected with the left end of the connecting fork 302, the left end of the push rod 301 is spherical and is movably contacted and connected with the spherical cambered surface of the push rod seat 103, and the connecting fork 302 is connected with the pedal arm.
The spring 40 connects the spring seat 102 of the split piston 10 with the cavity wall of the working cavity 201 of the main pump body 20 in the axial direction of the split piston 10;
the main leather cup 50 and the working cavity 201 of the master pump body 20 can be in contact with the cavity wall and are arranged in the main leather cup 50 groove 104 of the first combined structure of the split piston 10, the main leather cup 50 and the split piston 10 move together, the movement path comprises a cavity section where the communication port 203 is located, and the communication port 203 is plugged when the main leather cup 50 moves to the cavity section where the communication port 203 is located. The main cup 50 not only can enhance the tightness between the split piston 10 and the cavity wall of the main pump body 20, but also can seal the communication port 203, so that the working cavity 201 is separated from the liquid storage cavity 202.
In an embodiment, further comprising: the secondary cup 60 is disposed in the secondary cup 60 groove 105 of the second coupling structure of the split piston 10 and contacts the cavity wall of the working chamber 201 of the main pump body 20.
In the initial state, the clutch master cylinder is connected with the pedal arm through the push rod and the connecting fork assembly 30, the oil inlet 2021 is connected with the oil cup, after the clutch system is filled with brake fluid, when the clutch pedal is stepped on, the push rod 301 pushes the split piston 10 to move forwards, when the main leather cup 50 passes through the circular arc groove structure of the inner wall of the master cylinder 20, namely, after the communication port 203 is formed, a gap 70 between the outer wall of the split piston 10 and the cavity wall of the master cylinder 20 at the communication port 203 is closed, the working cavity 201 isolates the oil storage cavity, a closed space is formed, the pressure in the working cavity 201 is increased along with the continuous forward movement of the split piston 10, and the brake fluid flows into the slave cylinder through the oil pipe via the oil outlet 2011 to realize clutch separation. When the pedal returns, the split piston 10 returns rapidly under the action of the spring 40, the gap 70 is opened, the brake fluid in the cylinder and the oil pipe cannot flow back to the working cavity 201 of the main pump body 20 in time, the brake fluid in the oil storage cavity and the oil cup is rapidly supplemented into the working cavity 201 through the gap 70, and after the brake fluid in the cylinder and the oil pipe returns, the redundant brake fluid in the working cavity 201 returns back to the liquid storage cavity 202 and the oil cup through the gap 70 again, so that one working cycle is realized.
The foregoing description of the preferred embodiment(s) is (are) merely intended to illustrate the embodiment(s) of the present utility model, and it is not intended to limit the embodiment(s) of the present utility model to the particular embodiment(s) described.
Claims (10)
1. Split type piston, its characterized in that is applicable to clutch master cylinder, includes:
a piston body including a first end and a second end, wherein the first end is closer to an in-working chamber spring of the clutch master pump than the second end in an axial direction of the piston body;
the spring seat is detachably and fixedly arranged on the first end part of the piston main body so as to jointly form a first combined structure with a main leather cup groove on the outer side wall, and the main leather cup groove is positioned at the joint of the spring seat and the first end part of the piston main body;
the push rod seat is detachably and fixedly arranged on the second end part of the piston main body so as to form a second combined structure together.
2. The split piston as set forth in claim 1, wherein: the outer side wall of the second joint structure is provided with a secondary leather cup groove, and the secondary leather cup groove is positioned at the joint of the spring seat and the second end part of the piston main body.
3. The split piston of claim 1 wherein said first end of said piston body has a first chamfer segment at the intersection of the outer sidewall and the end face for guiding a primary cup into a primary cup groove of said first joint structure.
4. The split piston of claim 1 wherein the second end of the piston body has a second chamfer segment at the intersection of the outer sidewall and the end face for the secondary cup to be introduced into the secondary cup groove of the second mating structure.
5. The split piston of claim 1 wherein said spring seat has a projection thereon for engaging a spring in a working chamber of said main clutch pump.
6. The split piston of claim 1, further comprising: and the first screw is used for fixedly connecting the spring seat with the first end part of the piston body along the axial direction of the piston body.
7. The split piston of claim 1 wherein said pushrod seat has a spherical arcuate surface on an end surface thereof remote from said piston body.
8. The split piston of claim 1, further comprising: and the second screw is used for fixedly connecting the push rod seat with the second end part of the piston main body along the axial direction of the piston main body.
9. Clutch master cylinder, characterized by comprising:
the working cavity is communicated with the branch pump, and the liquid storage cavity is communicated with the working cavity;
a split piston as claimed in any one of claims 1 to 8 slidably connected to a working chamber wall of said main pump body;
the push rod and connecting fork assembly is used for connecting a push rod seat of the split type piston with a pedal arm, and under the action of the pedal arm, the push rod and connecting fork assembly drives the split type piston to move in a working cavity of the main pump body so as to regulate and control the pressure in the working cavity of the main pump body;
a spring which connects the spring seat of the split piston with the working chamber wall of the main pump body in the axial direction of the split piston, and
the main leather cup is arranged in a main leather cup groove of a first combined structure of the split type piston, the main leather cup moves together with the split type piston and the movement path comprises a cavity section where the communication port is located, and the communication port is blocked when the main leather cup moves to the cavity section where the communication port is located.
10. The clutch master cylinder of claim 9, further comprising: and the auxiliary leather cup is arranged in the auxiliary leather cup groove of the second combined structure of the split type piston and is contacted with the cavity wall of the working cavity of the main pump body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223431961.7U CN219733614U (en) | 2022-12-20 | 2022-12-20 | Split type piston and clutch master cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223431961.7U CN219733614U (en) | 2022-12-20 | 2022-12-20 | Split type piston and clutch master cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219733614U true CN219733614U (en) | 2023-09-22 |
Family
ID=88056633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223431961.7U Active CN219733614U (en) | 2022-12-20 | 2022-12-20 | Split type piston and clutch master cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219733614U (en) |
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2022
- 2022-12-20 CN CN202223431961.7U patent/CN219733614U/en active Active
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