CN201613890U - Brake master cylinder assembly for automobile - Google Patents
Brake master cylinder assembly for automobile Download PDFInfo
- Publication number
- CN201613890U CN201613890U CN200920299404XU CN200920299404U CN201613890U CN 201613890 U CN201613890 U CN 201613890U CN 200920299404X U CN200920299404X U CN 200920299404XU CN 200920299404 U CN200920299404 U CN 200920299404U CN 201613890 U CN201613890 U CN 201613890U
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- CN
- China
- Prior art keywords
- push rod
- piston
- pull back
- back spring
- spring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 238000012856 packing Methods 0.000 claims description 22
- 241000269799 Perca fluviatilis Species 0.000 claims description 14
- 230000006378 damage Effects 0.000 abstract description 3
- 239000010985 leather Substances 0.000 abstract description 3
- 238000007789 sealing Methods 0.000 abstract 2
- 241000269800 Percidae Species 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 230000001413 cellular effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
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- Transmission Of Braking Force In Braking Systems (AREA)
Abstract
The utility model discloses a brake master cylinder assembly for an automobile, which comprises a first spring seat, a second spring seat, a first return spring, a second return spring, a first piston and a second piston, wherein a first center valve and a second center valve are respectively arranged on the first piston and the second piston; the first center valve comprises a first sealing gasket, a first push rod and a first push rod return spring; the first push rod is mounted between the first piston and the first return spring; the first push rod return spring is mounted on the first push rod on the side opposite to the first return spring; the first sealing gasket is mounted between the first push rod and the first piston; and the structure of the second center valve is the same as that of the first center valve. The brake master cylinder assembly adopting the special structure replaces a compensation hole by the center valves, thereby avoiding harm to a leather cup caused by the sharp corner at the opening of the compensation hole, and further prolonging the service life of the brake master cylinder.
Description
Technical field
The utility model relates to the car chassis field, especially relates to a kind of automobile brake master cylinder assembly.
Background technology
Master brake cylinder is the extremely important very crucial parts of in the brake system of car, can produce high-pressure pulsating during owing to ABS work and very easily destroy tradition compensation cellular type master cylinder primary cup, causes braking failure.Along with popularizing of ABS and constantly promoting the use of of ESP, the tradition compensation cellular type master brake cylinder life-span, short shortcoming more and more can not satisfy the needs of modern automobile, and the trend that is eliminated is gradually arranged.
The utility model content
Technical problem to be solved in the utility model is to provide a kind of automobile brake master cylinder assembly at problems of the prior art, its objective is to avoid because of of the injury of compensation orifice aperture wedge angle to leather cup, thus the life-span of having improved master brake cylinder.
The technical solution of the utility model is this kind automobile brake master cylinder assembly, comprise first spring perch, second spring perch, first pull back spring, second pull back spring, the first piston and second piston, described first piston, be respectively equipped with first central valve on second piston, second central valve, described first central valve comprises first packing seal, first push rod and the first push rod pull back spring, first push rod is installed between the first piston and first pull back spring, the first push rod pull back spring is installed in a side relative with first pull back spring on first push rod, and first packing seal is installed between first push rod and the first piston; Described second central valve comprises second packing seal, second push rod and the second push rod pull back spring, second push rod is installed between second piston and second pull back spring, the second push rod pull back spring is installed in a side relative with second pull back spring on second push rod, and second packing seal is installed between second push rod and second piston.
The equal stiffness of the described first push rod pull back spring and the second push rod pull back spring, and less than the rigidity of first pull back spring and second pull back spring.
The internal diameter of described first piston, second piston cooperates with the column part crest clearance of first push rod, second push rod respectively.
The internal diameter of described first spring perch, second spring perch respectively with the internal diameter free-running fit of cylinder body.
A kind of automobile with above-mentioned special construction has the following advantages with brake master cylinder assembly:
1, this kind automobile replaces compensation orifice with brake master cylinder assembly with central valve, avoid because of of the injury of compensation orifice aperture wedge angle leather cup, thus the life-span of having improved master brake cylinder.
2, this kind automobile is safe and reliable, simple in structure with brake master cylinder assembly, the life-span is long.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing:
Fig. 1 is the structural representation of the utility model when free state.
Fig. 2 is the partial enlarged drawing of structure shown in Figure 1.
Fig. 3 is the structural representation of the utility model in working order the time.
Fig. 4 is the partial enlarged drawing of structure shown in Figure 3.
In Fig. 1-4,1: first piston; 2: the first push rods; 3: the first push rod pull back springs; 4: the first packing seals; 5: the first spring perches; 6: the first pull back springs; 7: the second pistons; 8: the second push rods; 9: the second push rod pull back springs; 10: the second packing seals; 11: the second spring perches; 12: the second pull back springs; 13: the second brake chambers; 14: the second compensation orifices; 15: the second feed flow chambeies; 16: the first brake chambers; 17: the first compensation orifices; 18: the first feed flow chambeies; 19: cylinder body; 20: the servo-unit push rod; 21: master cylinder first oil inlet; 22: master cylinder second oil inlet; 23: the oil-feed valve port.
The specific embodiment
By the combination of structure shown in Fig. 1-4 as can be known, this kind automobile comprises first spring perch 5 with brake master cylinder assembly, second spring perch 11, first pull back spring 6, second pull back spring 12, the first piston 1 and second piston 7, first piston 1, be respectively equipped with first central valve on second piston 7, second central valve, described first central valve comprises first packing seal 4, first push rod 2 and the first push rod pull back spring 3, first push rod 2 is installed between the first piston 1 and first pull back spring 6, the first push rod pull back spring 3 is installed on first push rod 2 side relative with first pull back spring 6, and first packing seal 4 is installed between first push rod 2 and the first piston 1; Described second central valve comprises second packing seal 10, second push rod 8 and the second push rod pull back spring 9, second push rod 8 is installed between second piston 7 and second pull back spring 12, the second push rod pull back spring 9 is installed on second push rod 8 side relative with second pull back spring 12, and second packing seal 10 is installed between second push rod 8 and second piston 7.
The equal stiffness of the first push rod pull back spring 3 and the second push rod pull back spring 9, and less than the rigidity of first pull back spring 6 and second pull back spring 12.
The internal diameter of first piston 1, second piston 7 cooperates with the column part crest clearance of first push rod 2, second push rod 8 respectively.
The internal diameter of first spring perch 5, second spring perch 11 respectively with the internal diameter free-running fit of cylinder body 19.
When master cylinder is under the free state, when being off working state, master cylinder first oil inlet 21 and master cylinder second oil inlet 22 of braking liquid through being positioned on the cylinder body 19 enters the first feed flow chamber 18 and the second feed flow chamber 15 respectively, and then through first piston 1 and first compensation orifice 17 above second piston 7, second compensation orifice 14, first piston 1, second piston 7 and first push rod 2, gap between second push rod 8 and first piston 1, second piston 7 and first packing seal 4, oil-feed valve port 23 between second packing seal 10 enters first brake chamber 16 and second brake chamber 13, i.e. first brake chamber 16 and the first feed flow chamber 18, second brake chamber 13 and the second feed flow chamber 15 are in communicating state.
When the braking beginning, servo-unit push rod 20 promotes first piston 1 and is moved to the left, and through first pull back spring 6 and the first push rod pull back spring 3 thrust is passed to second piston 7.Along with push rod continue move forward, because the rigidity of first pull back spring 6 and second pull back spring 12 is greater than the rigidity of the first push rod pull back spring 3 and the second push rod pull back spring 9, acting on the elastic force that thrust on the servo-unit push rod 20 will take the lead in overcoming the first push rod pull back spring 3 and the second push rod pull back spring 9 makes first packing seal 4 contact with first piston 1, second packing seal 10 contacts with second piston 7, oil-feed valve port 23 is closed, thereby brake chamber and feed flow chamber are isolated, as shown in Figure 3, first brake chamber 16 and second brake chamber 13 are built and are pressed off the beginning, pressure passes to drg by the pipeline that is connected oil outlet, and increase gradually along with the continuing to be moved to the left of piston, increase along with pressure, first packing seal 4, second packing seal 10 is also at the high pressure and first pull back spring 3, the effect of second pull back spring 4 forms self-locking down, thereby makes the braking effect safety and reliability.
When brake off promptly removed the power of servo-unit push rod 20, first piston 1, second piston 7 and first packing seal 4, second packing seal 10 were returned to free position as shown in Figure 1 under the combined action of the elastic force of difference of pressure, first pull back spring 6, second pull back spring 12 and the first push rod pull back spring 3 and the second push rod pull back spring 9.
Claims (5)
1. automobile brake master cylinder assembly, comprise first piston (1) and second piston (7), first spring perch (5), second spring perch (11), first pull back spring (6), second pull back spring (12), it is characterized in that: described first piston (1), second piston is respectively equipped with first central valve on (7), second central valve, described first central valve comprises first packing seal (4), first push rod (2) and the first push rod pull back spring (3), first push rod (2) is installed between first piston (1) and first pull back spring (6), the first push rod pull back spring (3) is installed in first push rod (2) and goes up a side relative with first pull back spring (6), and first packing seal (4) is installed between first push rod (2) and the first piston (1); Described second central valve comprises second packing seal (10), second push rod (8) and the second push rod pull back spring (9), second push rod (8) is installed between second piston (7) and second pull back spring (12), the second push rod pull back spring (9) is installed in second push rod (8) and goes up a side relative with second pull back spring (12), and second packing seal (10) is installed between second push rod (8) and second piston (7).
2. a kind of automobile brake master cylinder assembly according to claim 1, it is characterized in that: the equal stiffness of the described first push rod pull back spring (3) and the second push rod pull back spring (9), and less than the rigidity of first pull back spring (6) and second pull back spring (12).
3. a kind of automobile brake master cylinder assembly according to claim 1 and 2 is characterized in that: the internal diameter of described first piston (1), second piston (7) cooperates with the column part crest clearance of first push rod (2), second push rod (7) respectively.
4. a kind of automobile brake master cylinder assembly according to claim 1 and 2 is characterized in that: the internal diameter of described first spring perch (5), second spring perch (11) respectively with the internal diameter free-running fit of cylinder body (19).
5. a kind of automobile brake master cylinder assembly according to claim 3 is characterized in that: the internal diameter of described first spring perch (5), second spring perch (11) respectively with the internal diameter free-running fit of cylinder body (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920299404XU CN201613890U (en) | 2009-12-18 | 2009-12-18 | Brake master cylinder assembly for automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920299404XU CN201613890U (en) | 2009-12-18 | 2009-12-18 | Brake master cylinder assembly for automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201613890U true CN201613890U (en) | 2010-10-27 |
Family
ID=43000262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920299404XU Expired - Fee Related CN201613890U (en) | 2009-12-18 | 2009-12-18 | Brake master cylinder assembly for automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201613890U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102434601A (en) * | 2011-12-02 | 2012-05-02 | 芜湖博格汽车零部件有限公司 | Braking master cylinder structure |
| CN108944869A (en) * | 2018-06-29 | 2018-12-07 | 苏州汇琨菁华电子科技有限公司 | Novel centre valve type braking main pump |
| IT202000022840A1 (en) * | 2020-09-29 | 2020-12-29 | Andrea Stefani | Actuating piston for the pump unit of the hydraulic clutch actuation system of motor vehicles with actuating piston equipped with sealing elements and guide rings |
| 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 |
-
2009
- 2009-12-18 CN CN200920299404XU patent/CN201613890U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102434601A (en) * | 2011-12-02 | 2012-05-02 | 芜湖博格汽车零部件有限公司 | Braking master cylinder structure |
| CN108944869A (en) * | 2018-06-29 | 2018-12-07 | 苏州汇琨菁华电子科技有限公司 | Novel centre valve type braking main pump |
| CN108944869B (en) * | 2018-06-29 | 2023-12-26 | 苏州汇琨菁华电子科技有限公司 | Novel central valve type brake master cylinder |
| IT202000022840A1 (en) * | 2020-09-29 | 2020-12-29 | Andrea Stefani | Actuating piston for the pump unit of the hydraulic clutch actuation system of motor vehicles with actuating piston equipped with sealing elements and guide rings |
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101027 Termination date: 20131218 |