CN208646829U - The plunger-type brake master cylinder structure of vehicle locking when preventing ESP upward slope from assisting - Google Patents
The plunger-type brake master cylinder structure of vehicle locking when preventing ESP upward slope from assisting Download PDFInfo
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- CN208646829U CN208646829U CN201820970039.XU CN201820970039U CN208646829U CN 208646829 U CN208646829 U CN 208646829U CN 201820970039 U CN201820970039 U CN 201820970039U CN 208646829 U CN208646829 U CN 208646829U
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Abstract
The utility model discloses it is a kind of prevent ESP go up a slope auxiliary when vehicle locking plunger-type brake master cylinder structure.Main includes the piston and primary cup being arranged in the cylinder body of master cylinder, and first piston inner end end face center is provided with spring mounting hole, annular repairing groove and repairing hole of the setting for normal repairing on the outer peripheral surface side wall of piston inner end end；Side wall in the first piston inner end end close to cylinder body oil inlet side is provided with relief hole, and relief hole is located at first piston repairing groove sidewall, and relief hole both ends are respectively communicated with piston spring mounting hole and first piston repairing slot.The utility model ensure that master cylinder return pressure release is smooth, and master cylinder can not make the normal return pressure release of master cylinder by relief hole in the case where normal pressure release after repairing hole is because of leather cup improper compressive deformation blocking.
Description
Technical field
The utility model relates to a kind of automobile novel brake master cylinders, when preventing ESP upward slope auxiliary more particularly, to one kind
The plunger-type brake master cylinder structure of vehicle locking.
Background technique
The vehicle of ESP upward slope miscellaneous function is matched in the market after the starting of upward slope miscellaneous function, then is continuously touched on the brake, and is braked
Brake fluid amount in system can be greater than the liquid measure of normal brake application, after loose pedal, brake master cylinder piston return, in braking system due to
Brake fluid amount is greater than normal liquid measure, and it is hydraulic to will form residual in braking system, causes leather cup to deform, blocks repairing hole, braking system
Residual is hydraulic in system to discharge, and brake locking phenomenon occur so as to cause vehicle.
Utility model content
It is hydraulic due to forming residual in braking system for the vehicle for matching ESP upward slope miscellaneous function in the market, lead to skin
Bowl deformation blocks repairing hole, and the interior residual of braking system is hydraulic to be discharged, and the phenomenon that brake locking occurs in vehicle.The utility model
Propose it is a kind of prevent ESP go up a slope auxiliary when vehicle locking plunger-type brake master cylinder structure.
The utility model, which adopts the following technical solutions, to be addressed:
The utility model includes cylinder body, first piston assembly and second piston assembly, first piston assembly and second piston
It is withstood in cylinder body in advance after the identical axis connection of assembly by the output ejector pin in vacuum booster, second piston assembly includes second living
Plug, the second return spring, the second hat spring base and the second plain washer, second piston front end apical grafting to cylinder body inner bottom surface, second
Piston nose is provided with annular groove, is connecting rod position among the annular groove of second piston, and connecting rod position passes through the second hat bullet
It is extend into after the central through hole of spring abutment rear end in the second hat spring base, connecting rod position is riveted on center by the second plain washer
Through-hole inner face, the second hat spring base front end are equipped with outward flange, are connected between outward flange and second piston annular groove bottom
Second return spring；First piston assembly includes first piston, the first return spring, the first hat spring base and the first plain cushion
Circle, first piston front end are connected on second piston rear end face, and first piston front end is provided with annular groove, the annular groove of first piston
Centre is connecting rod position, and the central through hole that the connecting rod position of first piston front end passes through the first hat spring base rear end extendes back
Enter into the first hat spring base, connecting rod position is riveted on central through hole inner face, the first hat bullet by the first plain washer
Spring abutment front end is equipped with outward flange, is connected with the first return spring between outward flange and first piston annular groove bottom.
It is provided with leather cup slot and oil hole structure in the cylinder side wall for being located at first piston assembly and second piston assembly periphery,
Leather cup slot and oil hole structure include oil inlet and two leather cup slots being located at before and after oil inlet, primary cup be mounted on into
In leather cup slot before hydraulic fluid port, secondary leather cup is mounted in the leather cup slot before oil inlet；Primary cup, secondary leather cup inner circumferential and first are living
Plug or second piston interference fit, primary cup, secondary leather cup periphery and cylinder body leather cup slot inner wall are interference fitted.
It is provided with respectively with primary cup junction for normal repairing in first piston and the annular groove external groove sidevall of second piston
Annular repairing groove, be uniformly distributed along the circumference on the annular groove face of annular repairing groove and be provided with 16 repairing holes；Annular repairing groove
Annular groove face be provided with relief hole at the oil inlet side, repairing hole and the equal both ends of relief hole are respectively communicated with annular groove and benefit
Oil groove.
Setting is used for the relief hole of pressure release in first piston repairing groove sidewall, and to realize that master cylinder builds pressure, pressure release is normal,
To realize that master cylinder function is normal.
The pressure release bore dia is 0.5mm.Pressure release bore dia needs are moderate, cannot be excessive, can not be too small, cross conference
The stability of master cylinder performance is influenced, too small to will cause pressure release unsmooth.
The first piston and second piston is made of rubber.
The master cylinder of the utility model increases relief hole on first piston, regardless of leather cup compressive deformation, system
Relief hole is all not plugged up after dynamic master cylinder return, to ensure that master cylinder builds pressure, decompression function is normal, i.e. master cylinder
Function is normal.Because of both meeting close cylinder body leather cup slot and primary cup binding face in relief hole arrangement, and aperture is smaller, will not be right
The system performances such as brake pedal sense have an impact.
The utility model has the beneficial effects that
On the one hand the utility model can carry out repairing, oil return, so that in master cylinder body by repairing slot and repairing hole
Pressure and pressure release can normally be built.In master cylinder under certain specific operation, leather cup deformation is serious for another invention, plugs first
When the repairing hole being arranged on piston piston, i.e., after blocking master cylinder return in the case where the access of normal pressure release, by letting out
It presses hole to carry out pressure release, keeps master cylinder function normal.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model master cylinder.
Fig. 2 is the structural schematic diagram that the utility model repairing hole, repairing slot and relief hole open up.
In figure: 1, cylinder body, 2, primary cup, 3, secondary leather cup, 4, first piston assembly, 5, second piston assembly, 6, first is living
Plug, the 7, first return spring, the 8, first hat spring base, the 9, first plain washer, 10, second piston, the 11, second return spring,
12, the second hat spring base, the 13, second plain washer；A, leather cup slot, b, connecting rod position, c, repairing slot, d, repairing hole, e, ring
Shape slot, f, oil inlet, g, relief hole.
Specific embodiment
With reference to the accompanying drawing and specific embodiment is described in further detail the utility model.
As shown in Figure 1, the utility model includes cylinder body 1, first piston assembly 4 and second piston assembly 5, first piston is total
It is withstood in cylinder body 1 in advance at behind 4 and the identical axis connection of second piston assembly 5 by the output ejector pin in vacuum booster.
Second piston assembly 5 includes second piston 10, the second return spring 11, the second hat spring base 12 and the second plain cushion
Circle 13,10 front end apical grafting of second piston to 1 inner bottom surface of cylinder body, 10 front end of second piston are provided with annular groove e, installation in annular groove e
The centre annular groove e of second return spring 11, second piston 10 is connecting rod position b, and connecting rod position b passes through the second hat bullet
It is extend into after the central through hole of 12 rear end of spring abutment in the second hat spring base 12, connecting rod position b passes through 13 riveting of the second plain washer
It connects in central through hole inner face, 12 front end of the second hat spring base is equipped with outward flange, 10 annular groove bottom of outward flange and second piston
The second return spring 11 is connected between face.
First piston assembly 4 includes first piston 6, the first return spring 7, the first hat spring base 8 and the first plain washer
9,6 front end of first piston is connected on 10 rear end face of second piston, and 6 front end of first piston is provided with annular groove e, peace in annular groove e
The first return spring 7 is filled, is connecting rod position b, the connecting rod position of 6 front end of first piston among the annular groove e of first piston 6
B is extend into the first hat spring base 8 after passing through the central through hole of 8 rear end of the first hat spring base, and connecting rod position b passes through the
One plain washer 9 is riveted on central through hole inner face, and 8 front end of the first hat spring base is equipped with outward flange, outward flange and first piston 6
The first return spring 7 is connected between annular groove bottom.
The return spring of first piston assembly 4 and second piston assembly 5, hat spring base peace gasket construction are all the same,
Piston structure is similar.
As shown in Fig. 2, being provided with leather cup in 1 side wall of cylinder body for being located at 5 periphery of first piston assembly 4 and second piston assembly
Slot and oil hole structure, leather cup slot and oil hole structure include oil inlet f and two leather cup slot a being located at before and after oil inlet f, main
Leather cup 2 and secondary leather cup 3 are assemblied in leather cup slot a, and primary cup 2 is mounted in the leather cup slot a before oil inlet f, and secondary leather cup 3 is pacified
In the leather cup slot a being located at before oil inlet f；Primary cup 2,3 inner circumferential of secondary leather cup and first piston 6 or 10 interference of second piston are matched
It closes, primary cup 2,3 periphery of secondary leather cup and 1 leather cup slot a inner wall of cylinder body are interference fitted.
As shown in Fig. 2, being opened respectively with 2 junction of primary cup in first piston 6 and the annular groove e external groove sidevall of second piston 10
There is the annular repairing groove c for normal repairing, is uniformly distributed along the circumference on the annular groove face of annular repairing groove c and is provided with 16 repairings
Hole d；The repairing hole both ends d are respectively communicated with annular groove e and repairing slot c.
The annular groove face of annular repairing groove c is being provided with relief hole g, the equal both ends relief hole g point at the side oil inlet f
Not Lian Tong annular groove e and repairing slot c, relief hole is disposed adjacent to both cylinder body leather cup slot and primary cups binding face, guarantees leather cup
Relief hole can not be blocked after compressive deformation.
When it is implemented, relief hole g diameter is 0.5mm.Relief hole g diameter needs are moderate, cannot be excessive, can not mistake
Small, the excessive stability that will affect master cylinder performance, too small to will cause pressure release unsmooth；Cross primary cup of the conference by rubber material
It scratches, master cylinder is caused to fail, the decline of master cylinder service life；It is too small that will cause repairing unsmooth.
The master cylinder of the utility model increases relief hole g on first piston, regardless of primary cup 2 is by buckling
Shape, relief hole g is not plugged up after master cylinder return, to ensure that master cylinder builds pressure, decompression function is normal, that is, makes
Dynamic master cylinder function is normal.Because in relief hole g arrangement can close to both cylinder body leather cup slot a and primary cup 2 binding face, and aperture compared with
It is small, the system performances such as brake pedal sense will not be had an impact.
The utility model can guarantee that master cylinder return pressure release is smooth as a result, and in repairing hole because leather cup is improper
After compressive deformation blocking, master cylinder can not make the normal return of master cylinder let out in the case where normal pressure release by relief hole
Pressure.
Above-mentioned specific embodiment is used to illustrate the utility model, rather than limits the utility model,
In the spirit and scope of protection of the claims of the utility model, to any modifications and changes that the utility model is made, all fall
Enter the protection scope of the utility model.
Claims (5)
1. it is a kind of prevent ESP go up a slope auxiliary when vehicle locking plunger-type brake master cylinder structure, including cylinder body (1), first piston
It is helped after assembly (4) and second piston assembly (5), first piston assembly (4) and the identical axis connection of second piston assembly (5) by vacuum
Output ejector pin in power device is withstood in advance in cylinder body (1), it is characterised in that: second piston assembly (5) includes second piston (10), the
Two return springs (11), the second hat spring base (12) and the second plain washer (13), second piston (10) front end apical grafting to cylinder body
(1) inner bottom surface, second piston (10) front end are provided with annular groove (e), are connection bar portion among the annular groove (e) of second piston (10)
Position (b), connecting rod position (b) extend into the second hat spring base after the central through hole of second hat spring base (12) rear end
(12) in, connecting rod position (b) is riveted on central through hole inner face, the second hat spring base (12) by the second plain washer (13)
Front end is equipped with outward flange, is connected with the second return spring (11) between outward flange and the annular groove bottom of second piston (10)；
First piston assembly (4) includes that first piston (6), the first return spring (7), the first hat spring base (8) and first are flat
Washer (9), first piston (6) front end are connected on second piston (10) rear end face, and first piston (6) front end is provided with annular groove
It (e), is connecting rod position (b), the connecting rod position (b) of first piston (6) front end among the annular groove (e) of first piston (6)
It is extend into after the central through hole of first hat spring base (8) rear end in the first hat spring base (8), connecting rod position (b)
It is riveted on central through hole inner face by the first plain washer (9), the first hat spring base (8) front end is equipped with outward flange, outward flange
The first return spring (7) are connected between the annular groove bottom of first piston (6).
2. it is according to claim 1 it is a kind of prevent ESP go up a slope auxiliary when vehicle locking plunger-type brake master cylinder, feature
It is: is provided with leather cup slot and oil in cylinder body (1) side wall for being located at first piston assembly (4) and second piston assembly (5) periphery
Pore structure, leather cup slot and oil hole structure include oil inlet (f) and two leather cup slots (a) being located at before and after oil inlet (f), main
Leather cup (2) is mounted in the leather cup slot (a) before oil inlet (f), and secondary leather cup (3) is mounted on the skin before oil inlet (f)
In bowl slot (a)；Primary cup (2), secondary leather cup (3) inner circumferential and first piston (6) or second piston (10) interference fit, primary cup
(2), secondary leather cup (3) periphery and cylinder body (1) leather cup slot (a) inner wall are interference fitted.
3. it is according to claim 1 it is a kind of prevent ESP go up a slope auxiliary when vehicle locking plunger-type brake master cylinder, feature
It is: is provided with use with primary cup (2) junction respectively in first piston (6) and annular groove (e) external groove sidevall of second piston (10)
16 repairings are provided in being uniformly distributed along the circumference on the annular repairing groove (c) of normal repairing, the annular groove face of annular repairing groove (c)
Hole (d)；The annular groove face of annular repairing groove (c) is being provided with relief hole (g) at oil inlet (f) side, repairing hole (d) and
Relief hole (g) both ends are respectively communicated with annular groove (e) and repairing slot (c)；
Setting is used for the relief hole of pressure release in first piston repairing groove sidewall, and to realize that master cylinder builds pressure, pressure release is normal, thus
Realize that master cylinder function is normal.
4. it is according to claim 3 it is a kind of prevent ESP go up a slope auxiliary when vehicle locking plunger-type brake master cylinder, feature
Be: relief hole (g) diameter is 0.5mm.
5. it is according to claim 1 it is a kind of prevent ESP go up a slope auxiliary when vehicle locking plunger-type brake master cylinder, feature
Be: the first piston (6) and second piston (10) is made of rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820970039.XU CN208646829U (en) | 2018-06-22 | 2018-06-22 | The plunger-type brake master cylinder structure of vehicle locking when preventing ESP upward slope from assisting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820970039.XU CN208646829U (en) | 2018-06-22 | 2018-06-22 | The plunger-type brake master cylinder structure of vehicle locking when preventing ESP upward slope from assisting |
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| Publication Number | Publication Date |
|---|---|
| CN208646829U true CN208646829U (en) | 2019-03-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820970039.XU Active CN208646829U (en) | 2018-06-22 | 2018-06-22 | The plunger-type brake master cylinder structure of vehicle locking when preventing ESP upward slope from assisting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208646829U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111348019A (en) * | 2020-02-18 | 2020-06-30 | 万向钱潮股份有限公司 | Pressurization cylinder structure of integrated electronic control brake power-assisted system |
| CN113753005A (en) * | 2021-11-09 | 2021-12-07 | 杭州赛奇机械股份有限公司 | Brake master cylinder for new energy vehicle |
| CN114810874A (en) * | 2022-05-13 | 2022-07-29 | 浙江奔腾智能制动系统有限公司 | Plunger type brake master cylinder suitable for single-cavity structure of tractor |
-
2018
- 2018-06-22 CN CN201820970039.XU patent/CN208646829U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111348019A (en) * | 2020-02-18 | 2020-06-30 | 万向钱潮股份有限公司 | Pressurization cylinder structure of integrated electronic control brake power-assisted system |
| CN113753005A (en) * | 2021-11-09 | 2021-12-07 | 杭州赛奇机械股份有限公司 | Brake master cylinder for new energy vehicle |
| CN113753005B (en) * | 2021-11-09 | 2022-02-18 | 杭州赛奇机械股份有限公司 | Brake master cylinder for new energy vehicle |
| CN114810874A (en) * | 2022-05-13 | 2022-07-29 | 浙江奔腾智能制动系统有限公司 | Plunger type brake master cylinder suitable for single-cavity structure of tractor |
| CN114810874B (en) * | 2022-05-13 | 2024-04-26 | 浙江奔腾智能制动系统有限公司 | Plunger type brake master cylinder suitable for single-cavity structure of tractor |
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