CN104149761A - Brake master pump with built-in one-way valve - Google Patents
Brake master pump with built-in one-way valve Download PDFInfo
- Publication number
- CN104149761A CN104149761A CN201410345255.1A CN201410345255A CN104149761A CN 104149761 A CN104149761 A CN 104149761A CN 201410345255 A CN201410345255 A CN 201410345255A CN 104149761 A CN104149761 A CN 104149761A
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- piston
- oil
- pump housing
- spring
- valve
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- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
The invention relates to a brake master pump with a built-in one-way valve. The brake master pump comprises a pump body. A piston is communicated in the pump body. A dustproof cover sleeves the right end of the pump body. A compensation hole and an oil return hole are formed in the upper portion of the pump body. The left end of the pump body is provided with an oil outlet. A spring is disposed on the left of the piston. The left of the piston is provided with a balance hole. A primary cup is disposed on the left end face of the piston. An oil return piece is disposed between the primary cup and the piston. A secondary cup sleeves the right of the piston. A retaining ring for holes is disposed at the right end of the piston. A spring seat is disposed on the left end face of the primary cup. A spring is disposed in the spring seat. The other end of the spring is provided with a valve seat. The one-way valve is disposed in the valve seat. A valve pad is disposed at the left end of the valve seat. An oil inlet bolt is disposed above the compensation hole and the oil return hole. An oil inlet connector is fixedly connected to the upper portion of the oil inlet bolt. The brake master pump has the advantages that a brake lamp switch is directly connected to the oil outlet, timely response of the brake lamp switch is guaranteed, and oil return at the oil outlet is avoided by the one-way valve.
Description
Technical field
The present invention relates to brake device for car technical field, specifically a kind of master brake cylinder of built-in check valve.
Background technology
Master brake cylinder is also referred to as master brake cylinder, it is the device that driver's mechanical energy is changed into the hydraulic energy in master brake cylinder, in the time of automobile brake, when chaufeur is stepped on brake pedal, the piston of master brake cylinder moves axially, in master brake cylinder, working chamber volume reduces to make hydraulic pressure to rise, hydraulic oil transfers to brake cylinder by the oil pipe being connected with master brake cylinder, in brake cylinder epitrochoidal chamber, hydraulic oil promotes plunger and moves axially, plunger promotes brake shoe and expands laterally, the outside face of brake shoe is pressed on brake hub, utilize the friction force between brake shoe and brake hub to make car retardation, thereby realize the function of brake.
Master brake cylinder principle roughly communicates, but in the time that master brake cylinder is arranged in different automobile types, need to unique structure is set or increases unique function for different automobile types and different functional requirements.
Application number is that the Chinese patent of ZL201310720686.7 discloses a kind of brake master cylinder of car hydraulic brake, comprise cylinder body, be installed on the piston of inner chamber of cylinder block, be sleeved on piston anterior and press close to the main apron of piston crown, described inner chamber of cylinder block is divided into the liquid storage cylinder at rear portion and anterior brake chamber by main apron; The pull back spring that orders about piston reset is housed in brake chamber, and cylinder body is provided with oil suction chamber and is communicated with oil suction chamber and the spaced compensation orifice of inner chamber of cylinder block and front and back and fuel feed hole; Between piston crown and main apron, be provided with the valve block for supporting main apron, brake chamber chamber wall is provided with the oil outlet for being communicated with wheel cylinder.In use, fuel inlet fitting often need to be connected with oil inlet, easily produces wearing and tearing, if the fuel inlet fitting cost of integral replacing wearing and tearing is higher; While reset under effect at piston at spring, hydraulic oil will be from oil outlet oil return to pump housing inner chamber, is unfavorable for the stable fuel feeding of hydraulic tubing, and in addition, in the time that driver tramples brake pedal, stoplight stop lamp needs response rapidly, to remind in time pedestrian.
Summary of the invention
In order to solve the problems of the technologies described above, the invention provides a kind of master brake cylinder of built-in check valve.
The present invention solves its technical matters and realizes by the following technical solutions:
A kind of master brake cylinder of built-in check valve, comprise the pump housing, in the described pump housing, be connected with piston, the right-hand member cover of the pump housing has dust boot, the top of the pump housing is provided with compensation orifice and fuel return hole, the left end of the pump housing is provided with oil outlet, the left part of described piston is provided with spring, described piston left part is provided with balance hole, the left side of piston is provided with primary cup, between piston and primary cup, be provided with oil return sheet, the right part cover of piston has secontary cup, the right-hand member of described piston is provided with hole back-up ring, the left side of described primary cup is provided with spring perch, in described spring perch, be provided with spring, the other end of described spring is provided with valve seat, in described valve seat, be provided with the check valve that prevents that hydraulic oil from refluxing from oil outlet in the time of piston reset, between valve seat and check valve, be provided with valve leather circle, valve leather circle can slow down the impact effect of spring to check valve, described valve seat left end is provided with valve pad, described valve pad is close on pump housing left end inwall, described oil outlet is divided into two-way at pump housing left part, one tunnel is connected with braking signal switch, in the time having hydraulic oil to flow to oil outlet from pump housing inner chamber, oil pressure acts on the trigger mechanism of braking signal switch, make rapidly stoplight stop lamp response, the port on another road of oil outlet is provided with dust plug, in use by the oil pipe connecting to brake cylinder fuel feeding, described compensation orifice and fuel return hole top are provided with oil-feed bolt, described oil-feed bolt top is fixedly connected with fuel inlet fitting, between described oil-feed bolt and fuel inlet fitting, adopt the mode being threaded to be connected, dismounting flexibly, it is convenient to change.
Described secontary cup is Y type, and opening is left, so that while bearing piston to left movement, and the pressure of pump housing inner chamber left part.
The invention has the beneficial effects as follows: oil outlet of the present invention place is directly connected with braking signal switch, ensure the timely response of braking signal switch, pump housing top is connected with fuel inlet fitting and oil-feed bolt, and both can separately change, and saves maintenance cost, and both connect flexibly, convertible different oil-feed scheme adopts fuel inlet fitting fuel feeding simultaneously, has avoided the easily problem of leakage of hydraulic oil that uses lubricating cup to bring, when the setting of check valve has avoided piston to recover, the problem of oil outlet place oil return.
Brief description of the drawings
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is cutaway view of the present invention.
Detailed description of the invention
For technological means, creation characteristic that the present invention is realized, reach object and effect is easy to understand, below in conjunction with concrete diagram, further set forth the present invention.
As shown in Figure 1, a kind of master brake cylinder of built-in check valve, comprise the pump housing 5, in the described pump housing 5, be connected with piston 4, the right-hand member cover of the pump housing 5 has dust boot 1, the top of the pump housing 5 is provided with compensation orifice 19 and fuel return hole 20, the left end of the pump housing 5 is provided with oil outlet 18, the left part of described piston 4 is provided with spring 11, described piston 4 left parts are provided with balance hole 21, the left side of piston 4 is provided with primary cup 7, between piston 4 and primary cup 7, be provided with oil return sheet 6, the right part cover of piston 4 has secontary cup 3, the right-hand member of described piston 4 is provided with back-up ring 2 for hole, the left side of described primary cup 7 is provided with spring perch 10, in described spring perch 10, be provided with spring 11, the other end of described spring 11 is provided with valve seat 12, in described valve seat 12, be provided with the check valve 17 that prevents that hydraulic oil from refluxing from oil outlet 18 in the time that piston 4 resets, between valve seat 12 and check valve 17, be provided with valve leather circle 13, valve leather circle 13 can slow down the impact effect of spring 11 to check valve 17, described valve seat 12 left ends are provided with valve pad 14, described valve pad 14 is close on the pump housing 5 left end inwalls, described oil outlet 18 is divided into two-way at the pump housing 5 left parts, one tunnel is connected with braking signal switch 15, in the time having hydraulic oil to flow to oil outlet 18 from the pump housing 5 inner chambers, oil pressure acts on the trigger mechanism of braking signal switch 15, make rapidly stoplight stop lamp response, the port on oil outlet 18 another roads is provided with dust plug 16, in use by the oil pipe connecting to brake cylinder fuel feeding, described compensation orifice 19 and fuel return hole 20 tops are provided with oil-feed bolt 8, described oil-feed bolt 8 tops are fixedly connected with fuel inlet fitting, between described oil-feed bolt 8 and fuel inlet fitting 9, adopt the mode being threaded to be connected, dismounting flexibly, it is convenient to change.
Described secontary cup 3 is Y type, and opening is left, so that while bearing piston 4 to left movement, and the pressure of the pump housing 5 inner chamber left parts.
In the time depressing brake pedal, brake pedal promotes piston 4 indirectly to left movement, hydraulic oil in master brake cylinder is released left, enter oil outlet 18, fluid in oil-feed bolt 8 enters the pump housing 5 inner chamber right parts by fuel return hole 20, while unclamping pedal, piston 4 moves right under the restoring force effect of spring 11, the pump housing 5 inner chamber left parts form vacuum, the hydraulic oil of the pump housing 5 inner chamber right parts enters the pump housing 5 inner chamber left parts by balance hole 21, in the time that primary cup 7 returns to state of equilibrium, the unnecessary hydraulic oil of the pump housing 5 inner chamber left parts enters in oil-feed bolt 8 by compensation orifice 19.
More than show and described groundwork of the present invention, principal character and advantage of the present invention.The technical personnel of the industry should be understood; the present invention is not restricted to the described embodiments; that in above-described embodiment and specification sheets, describes just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (2)
1. the master brake cylinder of a built-in check valve, comprise the pump housing, in the described pump housing, be connected with piston, the right-hand member cover of the pump housing has dust boot, the top of the pump housing is provided with compensation orifice and fuel return hole, the left end of the pump housing is provided with oil outlet, the left part of described piston is provided with spring, it is characterized in that: described piston left part is provided with balance hole, the left side of piston is provided with primary cup, between piston and primary cup, be provided with oil return sheet, the right part cover of piston has secontary cup, the right-hand member of described piston is provided with hole back-up ring, the left side of described primary cup is provided with spring perch, in described spring perch, be provided with spring, the other end of described spring is provided with valve seat, in described valve seat, be provided with check valve, between valve seat and check valve, be provided with valve leather circle, described valve seat left end is provided with valve pad, described valve pad is close on pump housing left end inwall, described oil outlet is divided into two-way at pump housing left part, one tunnel is connected with braking signal switch, the port on another road is provided with dust plug, described compensation orifice and fuel return hole top are provided with oil-feed bolt, described oil-feed bolt top is fixedly connected with fuel inlet fitting.
2. the master brake cylinder of a kind of built-in check valve according to claim 1, is characterized in that: described secontary cup is Y type, and opening left.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410345255.1A CN104149761A (en) | 2014-07-19 | 2014-07-19 | Brake master pump with built-in one-way valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410345255.1A CN104149761A (en) | 2014-07-19 | 2014-07-19 | Brake master pump with built-in one-way valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104149761A true CN104149761A (en) | 2014-11-19 |
Family
ID=51875448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410345255.1A Pending CN104149761A (en) | 2014-07-19 | 2014-07-19 | Brake master pump with built-in one-way valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104149761A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105465221A (en) * | 2015-12-22 | 2016-04-06 | 芜湖恒坤汽车部件有限公司 | Clutch master cylinder |
| CN108799354A (en) * | 2018-05-07 | 2018-11-13 | 安徽迪尔荣机械有限公司 | A kind of clutch working cylinder of practicality |
| CN110822267A (en) * | 2019-11-29 | 2020-02-21 | 含山县承力铸造厂 | Lubricating grease feeding structure of automobile brake pump body |
| CN111365384A (en) * | 2020-03-27 | 2020-07-03 | 桂林电子科技大学 | Truck braking system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87202620U (en) * | 1987-02-25 | 1987-11-04 | 徐忠琦 | Safety main pump with multifunction |
| CN201442577U (en) * | 2009-07-22 | 2010-04-28 | 于学善 | Brake master pump |
| CN201891777U (en) * | 2010-11-18 | 2011-07-06 | 芜湖聚达汽车零部件有限公司 | Single-pipeline brake master cylinder assembly |
| CN102363425A (en) * | 2011-09-24 | 2012-02-29 | 芜湖众发汽车制动系统有限公司 | Double-piston brake master cylinder with dustproof covers in double oil storage cups |
| JP2012197065A (en) * | 2011-03-23 | 2012-10-18 | Advics Co Ltd | Master cylinder |
| CN203032655U (en) * | 2012-11-20 | 2013-07-03 | 玉环奥恒机械有限公司 | Hydraulic brake master cylinder of agricultural harvester |
-
2014
- 2014-07-19 CN CN201410345255.1A patent/CN104149761A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87202620U (en) * | 1987-02-25 | 1987-11-04 | 徐忠琦 | Safety main pump with multifunction |
| CN201442577U (en) * | 2009-07-22 | 2010-04-28 | 于学善 | Brake master pump |
| CN201891777U (en) * | 2010-11-18 | 2011-07-06 | 芜湖聚达汽车零部件有限公司 | Single-pipeline brake master cylinder assembly |
| JP2012197065A (en) * | 2011-03-23 | 2012-10-18 | Advics Co Ltd | Master cylinder |
| CN102363425A (en) * | 2011-09-24 | 2012-02-29 | 芜湖众发汽车制动系统有限公司 | Double-piston brake master cylinder with dustproof covers in double oil storage cups |
| CN203032655U (en) * | 2012-11-20 | 2013-07-03 | 玉环奥恒机械有限公司 | Hydraulic brake master cylinder of agricultural harvester |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105465221A (en) * | 2015-12-22 | 2016-04-06 | 芜湖恒坤汽车部件有限公司 | Clutch master cylinder |
| CN108799354A (en) * | 2018-05-07 | 2018-11-13 | 安徽迪尔荣机械有限公司 | A kind of clutch working cylinder of practicality |
| CN108799354B (en) * | 2018-05-07 | 2020-02-11 | 安徽迪尔荣机械有限公司 | Practical clutch working cylinder |
| CN110822267A (en) * | 2019-11-29 | 2020-02-21 | 含山县承力铸造厂 | Lubricating grease feeding structure of automobile brake pump body |
| CN111365384A (en) * | 2020-03-27 | 2020-07-03 | 桂林电子科技大学 | Truck braking system |
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| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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Application publication date: 20141119 |