CN201891777U - Single-pipeline brake master cylinder assembly - Google Patents
Single-pipeline brake master cylinder assembly Download PDFInfo
- Publication number
- CN201891777U CN201891777U CN2010206136248U CN201020613624U CN201891777U CN 201891777 U CN201891777 U CN 201891777U CN 2010206136248 U CN2010206136248 U CN 2010206136248U CN 201020613624 U CN201020613624 U CN 201020613624U CN 201891777 U CN201891777 U CN 201891777U
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- China
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- piston
- master cylinder
- brake master
- check valve
- cylinder body
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- Expired - Fee Related
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- Valves And Accessory Devices For Braking Systems (AREA)
- Transmission Of Braking Force In Braking Systems (AREA)
Abstract
The utility model discloses a single-pipeline brake master cylinder assembly, which comprises a cylinder body, wherein a working cavity is arranged inside the cylinder body, a piston module is installed inside the working cavity, and a retainer ring for a hole is also arranged between the rear end of the cylinder body and the piston module; the cylinder body is provided with an oil storage cup, and a liquid supply hole and a compensating hole for communicating the oil storage cup and the working cavity, the piston module comprises a piston, a leather ring and a leather cup, a spring seat and a return spring which is supported by the spring seat are arranged inside the leather cup, the piston module also comprises a retaining valve module which is arranged at an oil outlet, a retaining valve sealing ring is arranged between the retaining valve module and the oil outlet, and the other end of the return spring is propped against the retaining valve module to press the retaining valve sealing ring and to push against the oil outlet. By adding the retaining valve module, high pressure is rapidly established inside a pipeline when a brake master cylinder works, and surplus pressure is maintained inside the pipeline when the brake master cylinder does not work, so the performance of a residual valve is realized, the service life of the piston can be effectively prolonged, and the performance of the single-pipeline brake master cylinder can be stabilized.
Description
Technical field
The utility model relates to the car hydraulic brake field, relates in particular to a kind of single tube road brake master cylinder that is used for car hydraulic brake.
Background technique
Brake master cylinder mostly is cast iron or aluminum alloy is made, and what have is cast as one with the reservoir compartment, is the integrated type master cylinder, what also have separates both, connects with oil pipe again, is split, how the reservoir compartment of split master cylinder makes lubricating cup with the transparent plastic mold pressing, and interior dress splashproof that has or liquid level are crossed low warning light switch.Single tube road brake master cylinder is meant that brake master cylinder only is provided with a reservoir compartment, also has only one group of piston assembly in the active chamber.The working surface precision of master cylinder is high and smooth, and oil inlet hole and compensate opening are arranged on the cylinder barrel, in the tube aluminium piston is housed, and the reservoir compartment communicates with active chamber with compensate opening by the bigger oil inlet hole of diameter.The effect of compensate opening is oil return and prevents that when temperature variation loine pressure from raising.
Traditional single tube road brake master cylinder (1) is not when braking, and piston crown and leather cup just in time are between oil inlet hole and the compensate opening, and compensate opening communicates with the reservoir compartment; (2) when braking, push rod moves to left piston and leather cup, cover in compensate opening to leather cup after, the pressure chamber is closed, hydraulic pressure raises, and pushes outlet valve immediately open fluid is pressed into pipeline, and the hydraulic pressure in the wheel cylinder is raise, overcome hoof drum gap after, produce braking action; When (3) keeping braking, keep pedal in a certain position, master cylinder piston is promptly kept motionless, and the oil pressure in pressure chamber and the wheel cylinder no longer raises, and outlet valve both sides oil pressure balance makes outlet valve and scavenger valve be in closed condition, keeps certain severity of braking; (4) if slowly during loosen the brake, brake petal, master cylinder piston and wheelcylinder piston be return under the effect of separately return spring all, and high-voltage oil liquid presses off scavenger valve from pipeline and flows back to master cylinder, and braking is removed thereupon; (5) rapidly during the loosen the brake pedal, piston moves to right rapidly under the effect of return spring, pressure chamber's internal volume enlarges rapidly, oil pressure reduces rapidly, fluid in the pipeline is because the resistance of pipeline and the influence of scavenger valve resistance, have little time fully to flow back to the pressure chamber, make the pressure chamber form certain degree of vacuum (negative pressure), and the compensated chamber of piston rear end is an atmospheric pressure, and under action of pressure, repairing chamber fluid promptly passes through the some axial bores of piston crown and overthrows the inflow pressure chamber, edge of leather cup, in order to the crus secunda braking, oil pump capacity is increased, and pedal is more stepped on higher, and braking action strengthens; (6) during the loosen the brake pedal, the complete return of piston, compensate opening is open, and the excess fluid of discharging flow back to the reservoir compartment through compensate openings more in the pipeline, and after oil pressure fell and ends remaining specified value in the pipeline, scavenger valve promptly cut out.
Because traditional single tube road brake master cylinder structure does not possess the performance of residual valve, make when shooting master cylinder inoperative, management does not have residual pressure, this makes between the conversion of each work of brake master cylinder and inoperative, need to produce bigger pressure difference, this will shorten the working life of piston, and then influence the performance of brake master cylinder.
The model utility content
The purpose of this utility model is in order to overcome technological deficiency recited above, a kind of single tube road brake master cylinder assy to be provided.
In order to solve technical problem recited above, the utility model is taked following technological scheme:
The utility model provides a kind of single tube road brake master cylinder assy, includes cylinder body, has active chamber in the cylinder body, is mounted with piston assembly in active chamber, and the porose back-up ring of using also is set between rear end of the cylinder block and piston assembly; On cylinder body, offer oil-storing cup, also be provided with the feed flow hole and the compensate opening that are communicated with oil-storing cup and active chamber on the cylinder body, piston assembly further includes piston, be arranged at the apron of piston rear end, be arranged at the leather cup of piston nose, be provided with the return spring that spring seat and spring seat support in the leather cup, described piston assembly also includes check valve assembly, check valve assembly is arranged on the oil outlet place, be provided with the one-way valve seal ring between check valve assembly and the oil outlet, the described return spring the other end supports to check valve assembly, be pressed on the one-way valve seal ring, support to oil outlet, described check valve assembly further includes unidirectional valve seat, nonreturn valve core and check valve sheet.
As a kind of preferred version, described unidirectional valve seat is provided with the circular arc convex tendon that acts on return spring.The circular arc convex tendon mainly is to increase unidirectional valve seat intensity, spring force is concentrated be pressed in one-way valve seal ring periphery, supports to oil outlet.
Described unidirectional valve seat sphere top offers a circle fluid through hole, when its purpose mainly is braking, fluid is passed through, and enters pipeline.
Described check valve sheet is riveted tightly by nonreturn valve core and unidirectional valve seat, covers the fluid through hole at unidirectional valve seat sphere top, to play the switch valve effect.
Described rear end of the cylinder block outer installment has dust-proof cover.
The utility model is by setting up check valve assembly, and when making brake master cylinder work, pipeline is set up high pressure rapidly, when the brake master cylinder inoperative, make pipeline keep residual pressure, make it have the residual valve performance, can prolong the working life of piston effectively, stablize the performance of single tube road brake master cylinder.
Description of drawings
Fig. 1 is the structural representation of the utility model single tube road brake master cylinder.
Fig. 2 is the check valve assembly structural representation.
Among the figure, 1. cylinder body, 2. dust-proof cover, 3. the hole is with back-up ring, 4. apron, 5. piston, 6. leather cup, 7. spring seat, 8. return spring, 9. check valve sheet, 10. nonreturn valve core, 11. unidirectional valve seats, 12. one-way valve seal rings, 13. oil cup cap seal rings, 14. oil cup caps, 15. feed flow holes, 16. compensate openings, 17. oil outlets, 18. oil-storing cups, 19. circular arc convex tendons, 20. fluid through holes.
Embodiment
See also Fig. 1 and Fig. 2, as shown in the figure, single tube road brake master cylinder assy includes cylinder body 1, and cylinder body 1 rear end is provided with dust-proof cover 2, has active chamber in the cylinder body 1, is mounted with piston assembly in active chamber; Between cylinder body 1 rear end and piston assembly, also be provided with porose with back-up ring 3; Offer oil-storing cup 18 on the cylinder body 1, oil-storing cup 18 is provided with oil cup cap 14 and oil cup cap seal ring 13, also be provided with the feed flow hole 15 and compensate opening 16 that are communicated with oil-storing cup 18 and active chamber on the cylinder body 1, piston assembly further includes piston 5, is arranged at the apron 4 of piston 5 rear ends, be arranged at the leather cup 6 of piston 5 front ends, leather cup 6 is provided with the return spring 8 of spring seat 7 and spring seat 7 supports; Piston assembly also includes check valve assembly, check valve assembly is arranged on the oil outlet place, is provided with one-way valve seal ring 12 between check valve assembly and the oil outlet 17, and return spring 8 the other ends support to check valve assembly, be pressed on the one-way valve seal ring 12, support to oil outlet 17; Check valve assembly further includes unidirectional valve seat 11, nonreturn valve core 10 and check valve sheet 9; Unidirectional valve seat 11 is provided with the circular arc convex tendon 19 that acts on return spring 8.Circular arc convex tendon 19 mainly is to increase unidirectional valve seat 11 intensity, spring force is concentrated be pressed in one-way valve seal ring 12 peripheries, supports to oil outlet 17; Unidirectional valve seat 11 sphere tops offer a circle fluid through hole 20, when its purpose mainly is braking, fluid are passed through, and enter pipeline; Check valve sheet 9 is riveted tightly by nonreturn valve core 10 and unidirectional valve seat 11, covers the fluid through hole 20 at unidirectional valve seat 11 sphere tops, to play the switch valve effect.
Single tube of the present utility model road brake master cylinder assy, when brake master cylinder was worked, push rod promoted piston advances forward, leather cup overcompensation hole, active chamber oil pressure pressurized, pressure raises, and pushes check valve sheet open, makes pipeline set up high pressure rapidly; When the brake master cylinder inoperative, the return spring return, piston returns rapidly, and unnecessary fluid flows back to through compensate opening, and check valve assembly is not opened yet fully, makes pipeline keep residual pressure, so have the residual valve performance.
Although the utility model has been done to describe in detail and quoted embodiment as proof, for those of ordinary skill in the art, obviously various schemes, modification and the change that can make according to above-mentioned explanation all should be included within the scope of claim.
Claims (5)
1. a single tube road brake master cylinder assy includes cylinder body, has active chamber in the cylinder body, is mounted with piston assembly in active chamber, and the porose back-up ring of using also is set between rear end of the cylinder block and piston assembly; On cylinder body, offer oil-storing cup, also be provided with the feed flow hole and the compensate opening that are communicated with oil-storing cup and active chamber on the cylinder body, piston assembly further includes piston, be arranged at the apron of piston rear end, be arranged at the leather cup of piston nose, be provided with the return spring that spring seat and spring seat support in the leather cup, it is characterized in that: described piston assembly also includes check valve assembly, check valve assembly is arranged on the oil outlet place, be provided with the one-way valve seal ring between check valve assembly and the oil outlet, the described return spring the other end supports to check valve assembly, be pressed on the one-way valve seal ring, support to oil outlet, described check valve assembly further includes unidirectional valve seat, nonreturn valve core and check valve sheet.
2. single tube as claimed in claim 1 road brake master cylinder assy is characterized in that: described unidirectional valve seat is provided with the circular arc convex tendon that acts on return spring.
3. single tube as claimed in claim 1 or 2 road brake master cylinder assy is characterized in that: described unidirectional valve seat sphere top offers a circle fluid through hole.
4. single tube as claimed in claim 3 road brake master cylinder assy is characterized in that: described check valve sheet is riveted tightly by nonreturn valve core and unidirectional valve seat, covers the fluid through hole at unidirectional valve seat sphere top.
5. single tube as claimed in claim 1 road brake master cylinder assy is characterized in that: described rear end of the cylinder block outer installment has dust-proof cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206136248U CN201891777U (en) | 2010-11-18 | 2010-11-18 | Single-pipeline brake master cylinder assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206136248U CN201891777U (en) | 2010-11-18 | 2010-11-18 | Single-pipeline brake master cylinder assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201891777U true CN201891777U (en) | 2011-07-06 |
Family
ID=44221255
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206136248U Expired - Fee Related CN201891777U (en) | 2010-11-18 | 2010-11-18 | Single-pipeline brake master cylinder assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201891777U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102338181A (en) * | 2011-09-24 | 2012-02-01 | 芜湖众发汽车制动***有限公司 | Brake master cylinder provided with residual valve and provided with inclined air bleed screw at top |
| CN102434607A (en) * | 2011-09-24 | 2012-05-02 | 芜湖众发汽车制动***有限公司 | Brake main cylinder with double oil outlet connectors and residual valve |
| CN103089869A (en) * | 2013-01-25 | 2013-05-08 | 徐浩钟 | Double-cavity separation type brake master cylinder |
| CN104149761A (en) * | 2014-07-19 | 2014-11-19 | 芜湖恒坤汽车部件有限公司 | Brake master pump with built-in one-way valve |
-
2010
- 2010-11-18 CN CN2010206136248U patent/CN201891777U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102338181A (en) * | 2011-09-24 | 2012-02-01 | 芜湖众发汽车制动***有限公司 | Brake master cylinder provided with residual valve and provided with inclined air bleed screw at top |
| CN102434607A (en) * | 2011-09-24 | 2012-05-02 | 芜湖众发汽车制动***有限公司 | Brake main cylinder with double oil outlet connectors and residual valve |
| CN103089869A (en) * | 2013-01-25 | 2013-05-08 | 徐浩钟 | Double-cavity separation type brake master cylinder |
| CN103089869B (en) * | 2013-01-25 | 2017-10-31 | 徐毓艺 | Double-cavity separation type brake master cylinder |
| CN104149761A (en) * | 2014-07-19 | 2014-11-19 | 芜湖恒坤汽车部件有限公司 | Brake master pump with built-in one-way valve |
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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: 20110706 Termination date: 20131118 |