CN2540343Y - Vehicle brake master cylinder with anti-failure, proportional valve - Google Patents
Vehicle brake master cylinder with anti-failure, proportional valve Download PDFInfo
- Publication number
- CN2540343Y CN2540343Y CN 02206884 CN02206884U CN2540343Y CN 2540343 Y CN2540343 Y CN 2540343Y CN 02206884 CN02206884 CN 02206884 CN 02206884 U CN02206884 U CN 02206884U CN 2540343 Y CN2540343 Y CN 2540343Y
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- CN
- China
- Prior art keywords
- brake
- housing
- apportioning valve
- oil
- master cylinder
- 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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- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
The utility model discloses a vehicle brake total pump with failure-proof and ratio valve, which combines anti-locking device, failure protection and alarm device in one casing, which are connected with the output portion of a brake oil pump via incline oil tubes in the casing. The anti-locking device is a ratio valve serially connected between a brake main cylinder and a back wheel cylinder, the failure protection and alarm device is a balance piston horizontally arranged between the air inlet chamber of the ratio valve and a front wheel brake oil chamber. Since the back wheel anti-locking device is arranged with a ratio valve engaged with spring force via a differential-diameter piston, the brake liquid pressure of back wheel is all lower than front wheel brake liquid pressure, to avoid back wheels being locked, and via the balance pistons of front and back chambers, when front wheels are fail at brake, high-pressure oil is directly communicated with oil outlet of back wheels, thereby keeping best brake effect of back wheels and emitting alarm prompt signal.
Description
Technical field
The utility model relates to a kind of automobile brake master cylinder, especially to the improvement of automobile brake master cylinder.
Background technology
Along with the quickening of modern life rhythm, automobile in people life Accounting according to crucial position, yet thing followed motor traffic accidents also has the trend of rising.How improving automobile brake perfrmance, make it to reach reliable braking when running into the emergency risks situation, is one of emphasis of automobile worker research.The applicant once declares " the automobile brake master cylinder of band anti-lock, an apportioning valve " Chinese patent (application number 012392359) May calendar year 2001, and it mainly is parallel to each other tightly the placing in the same housing of the fuel-displaced mechanism of its corresponding brake pump of anti-lock mechanism with front and back wheel, oblique oil pipe by top directly joins therebetween, and the neck cross section that connects neck in the rear wheel anti-acute death mechanism connects the neck cross section of neck less than the former.Therefore, that this utility model has is rational in infrastructure, it is compact to arrange, has increased the function of anti-lock and limiting valve, the stability and the safety that have improved automobile brake.Its weak point is that the stability of trailing wheel braking remains further to be improved, and when braking effect has been owed ， And and in a single day a certain brake circuit generation leakage of oil inefficacy, can't take the emergency protection measure, can not send the alarm signal.
Summary of the invention
The utility model mainly is to solve prior art to exist: anti-lock mechanism, particularly the stability of trailing wheel braking still feels not enough, in addition, does not have fail safe and warning function when braking failure.
The purpose of this utility model mainly is achieved by following agent technology scheme: anti-lock mechanism and fail safe, alarm mechanism tightly place in the same housing, and output direct by the oil pipe in the housing and brake pump joins; Described anti-lock mechanism is the apportioning valve that is connected between master brake cylinder and the rear wheel cylinder; Described fail safe mechanism is the dummy piston that is horizontally placed between apportioning valve oil suction chamber and the front wheel brake shoe cream room, and described oil pipe can be that straight tube also can be inclined tube.
Goal of the invention of the present utility model can also further be able to perfect by following technical proposals, described apportioning valve inner walls is equipped with spring, step-like differential piston places therebetween, differential piston top and housing cunning are joined; And matches with the Rubber Parts of the uniform a plurality of projectioies of upper and lower end face periphery, and join with the sealing nut cunning of being located at the housing lower end bottom; Omit in the middle of the dummy piston carefully, slip over as the garden and cross, the two ends seal ring is horizontally placed in the housing, housing one end bolt seal; The thin portion top of dummy piston is equipped with the switch thimble, and the switch thimble links to each other with alarm switch by housing.
The utlity model has following characteristics: anti-lock mechanism and fail safe, alarm mechanism and brake pump tightly place in the same housing, and it is rational in infrastructure, compact, effectively prevent leakage of oil; The apportioning valve that is matched by differential piston and spring force is set in the rear wheel anti-acute death mechanism, and therefore, the brake fluid pressure that makes trailing wheel prevents rear lock all the time less than front wheel brake hydraulic pressure; Simultaneously, because the effect of dummy piston when the front-wheel braking failure, directly communicates the trailing wheel high pressure oil with oil outlet, guarantee that trailing wheel keeps maximum braking effect, And can send the alarm signal.
Description of drawings
Accompanying drawing 1 is the utility model birds-eye view;
Accompanying drawing 2 is A-A cutaway views of the utility model birds-eye view;
Accompanying drawing 3 is B-B cutaway views of the utility model birds-eye view;
Accompanying drawing 4 is C-C cutaway views of the utility model birds-eye view;
Accompanying drawing 5 is partial enlarged drawings of the I portion of accompanying drawing 4.
The specific embodiment
Below by embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is further described in detail.
Shown in Fig. 2-5, apportioning valve 2 is connected between master brake cylinder and the rear wheel cylinder, is made up of Rubber Parts 22, differential piston 21, spring 23, sealing bolt 24.Step-like differential piston 21 tops and housing 1 are slided and are joined And as upper and lower mobile guiding, its underpart and 24 sliding joining of sealing bolt, top and Rubber Parts 22 borrow spring 23 to push against on housing 1 top, because Rubber Parts 23 upper/lower terminal face peripheries have a plurality of evenly distributed projectioies, though therefore Rubber Parts 23 contacts with housing 1 with differential piston 21, oil circuit can not be sealed, make the upper and lower chamber of housing keep communicating; Glancing impact enters ， And through the oblique braking liquid of oil duct by apportioning valve 2 bottoms from master cylinder and communicates with Rubber Parts 22 internal diameters via differential piston 21, flows to apportioning valve 2 top ， And and flows to oil outlet 7 through horizontal technology oil road, directly leads to brake wheel cylinder.When braking oil pressure raises, because differential piston 21 top bearing areas are greater than the bottom bearing area, thereby differential piston 21 moves down, when hydraulic pressure rises to certain value, overcome spring force, differential piston 21 is just in time isolated with upper and lower two chambeies with Rubber Parts 22 sealing ， And, and differential piston 21 is in state of equilibrium; If braking oil pressure further improves, differential piston 21 will up move, differential piston 21 is opened once again with Rubber Parts, after continuing to flow into, brakes out braking liquid oil pocket 42, hydraulic pressure is raise, yet when not having enough time as yet to be elevated to oil inlet hydraulic pressure, upper and lower cavity is isolated again, passage is cut off, and differential piston 21 is in state of equilibrium again.Like this, self-regulating process will be regulated with the variation of brake pedal force, be not more than front wheel brake hydraulic pressure all the time with the brake fluid pressure that reaches trailing wheel, prevent rear lock, meet the requirement of insensitivity, thereby utilized the adhesive weight of front-wheel fully, strengthened braking effect.
Slightly thin in the middle of the dummy piston 31, two ends seal ring 32, one has sealing bolt 34, be horizontally placed between the oil suction chamber and preceding braking shoe cream room 8 of apportioning valve 2, the effect of trailing wheel braking oil pressure is born on dummy piston 31 left sides, the effect of front wheel brake oil pressure is born on the right, in case a certain brake circuit generation leakage of oil was lost efficacy, dummy piston 31 is moved under the effect of another chamber oil pressure, lost efficacy as preceding brake circuit, then dummy piston 31 will move right, and the trailing wheel brake noise will directly communicate with oil outlet 7 by dummy piston 31 oil pockets, play to make rear-wheel braking force keep maximum effect; Simultaneously, switch thimble 33 is unlocked, and connects alarm switch 36 and sends the alarm signal, and vice versa.The utility model can prevent the automobile brake master cylinder of wheel lockup, sideslip sideslip and braking failure protection, warning function for the user provides a kind of rational in infrastructure, compact when emergency braking.
Claims (5)
1. be with the automobile brake master cylinder of preventing inefficacy, apportioning valve for one kind, comprise fuel-displaced mechanism of brake pump and anti-lock mechanism, and it is provided thereon into and out of oil pipe, it is characterized in that: anti-lock mechanism and fail safe mechanism and brake pump tightly place in the same housing (1), and output direct by the oil pipe (62) in the housing (1) and brake pump joins; Described anti-lock mechanism is the apportioning valve (2) that is connected between master brake cylinder and the rear wheel cylinder; Described fail safe mechanism is for being horizontally placed on the dummy piston (31) between apportioning valve (2) oil suction chamber and the front wheel brake shoe cream room.
2. the automobile brake master cylinder of the anti-inefficacy of band as claimed in claim 1, apportioning valve, it is characterized in that: apportioning valve (2) housing (1) inwall is equipped with spring (23), step-like differential piston (21) places therebetween, differential piston (21) top and housing (1) are sliding joins; And matches with the Rubber Parts (22) that upper and lower end face is provided with a plurality of projectioies, and join with the sealing nut (24) of being located at housing (1) lower end is sliding the bottom.
3. the automobile brake master cylinder of the anti-inefficacy of band as claimed in claim 1 or 2, apportioning valve, it is characterized in that: the middle slightly spy garden of dummy piston (31) slips over to be crossed, there is seal ring (32) at two ends, and it is horizontally placed in the housing (1), housing (1) one end sealing bolt (34).
4. the automobile brake master cylinder of the anti-inefficacy of band as claimed in claim 1 or 2, apportioning valve is characterized in that: the thin portion top of dummy piston (31) is equipped with switch thimble (33), and switch thimble (33) links to each other with alarm switch (35) by housing (1) And.
5. the automobile brake master cylinder of the anti-inefficacy of band as claimed in claim 3, apportioning valve is characterized in that: the thin portion top of dummy piston (31) is equipped with switch thimble (33), and switch thimble (33) links to each other with alarm switch (35) by housing (1) And.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02206884 CN2540343Y (en) | 2002-02-07 | 2002-02-07 | Vehicle brake master cylinder with anti-failure, proportional valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02206884 CN2540343Y (en) | 2002-02-07 | 2002-02-07 | Vehicle brake master cylinder with anti-failure, proportional valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2540343Y true CN2540343Y (en) | 2003-03-19 |
Family
ID=33688084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02206884 Expired - Fee Related CN2540343Y (en) | 2002-02-07 | 2002-02-07 | Vehicle brake master cylinder with anti-failure, proportional valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2540343Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1332839C (en) * | 2005-08-02 | 2007-08-22 | 浙江亚太机电股份有限公司 | Single chamber failure protection apparatus of double chamber proportioning valve |
| CN1332838C (en) * | 2005-07-12 | 2007-08-22 | 浙江亚太机电股份有限公司 | Proportional valve having failure protective device |
| CN100357140C (en) * | 2005-04-26 | 2007-12-26 | 温州市东启汽车零部件制造有限公司 | Brake main cylinder having regulatable ratio valve |
-
2002
- 2002-02-07 CN CN 02206884 patent/CN2540343Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100357140C (en) * | 2005-04-26 | 2007-12-26 | 温州市东启汽车零部件制造有限公司 | Brake main cylinder having regulatable ratio valve |
| CN1332838C (en) * | 2005-07-12 | 2007-08-22 | 浙江亚太机电股份有限公司 | Proportional valve having failure protective device |
| CN1332839C (en) * | 2005-08-02 | 2007-08-22 | 浙江亚太机电股份有限公司 | Single chamber failure protection apparatus of double chamber proportioning valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |