CN201520291U - Safety device of braking system of automobile - Google Patents
Safety device of braking system of automobile Download PDFInfo
- Publication number
- CN201520291U CN201520291U CN2009201248329U CN200920124832U CN201520291U CN 201520291 U CN201520291 U CN 201520291U CN 2009201248329 U CN2009201248329 U CN 2009201248329U CN 200920124832 U CN200920124832 U CN 200920124832U CN 201520291 U CN201520291 U CN 201520291U
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- CN
- China
- Prior art keywords
- negative pressure
- vacuum
- pressure switch
- switch
- automobile
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- 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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Abstract
The utility model relates to a safety device of a braking system of an automobile, wherein a negative pressure switch (8) is added on a vacuum cylinder (2) of a current braking vacuum booster (2), a bypass is made on a pipeline (9) leading to an engine air inlet pipe, and a micro electric vacuum pump (10) is installed thereon. The negative pressure switch (8), the micro electric vacuum pump (10), an automobile key switch (12) and a vehicle-mounted battery jar (11) are linearly connected into a serially connected circuit. In practical use, the set working negative pressure range of the negative pressure switch (8) is equal to the working negative pressure value range of a corresponding automobile; during normal driving, working negative pressure is maintained in the vacuum cylinder (2), the negative pressure switch (8) is disconnected, and the circuit is not conducted; when faults such as sudden flameout of an engine (the key switch is in conducting sate) and the like occur during driving, once negative pressure does not exist in the vacuum cylinder (2), the negative pressure switch (8) is turned on to conduct the circuit, and the micro electric vacuum pump (10) works to pump the vacuum cylinder (2) to be vacuum and then stops; and the course is conducted circularly so as to keep vacuum working states in the vacuum cylinder (2) all the time, thus guaranteeing that the braking is flexible and effective under the emergency state of flameout of the engine, and avoiding the occurrence of serious accidents.
Description
Technical field
The utility model relates to traffic and transport field, especially refers to a kind of auto brake system safety device.
Background technology
Automobile plays a part indispensable in people's productive life as a kind of traffic and transportation means of convenient and efficient.Brake system is a component part of paramount importance on the automobile, and it is related to people's the security of the lives and property." vacuum servo formula hydraulic braking sysgtem " is most widely used on car at present, be to fasten in hydraulic braking to have increased the vacuum booster of forming by control cock and afterburning air chamber, its principle of work is, vacuum cylinder one end communicates with the air inlet pipe of driving engine, the other end links to each other with afterburning air chamber, in normal driving process, vacuum cylinder is in negative pressure state, when stepping on brake pedal, vacuum booster borrows the foot-operated power of the effect in vacuum power source and steerman to promote the piston of master brake cylinder jointly, increased the pressure of hydraulic efficiency pressure system, made and brake light, deceleration and stopping performance enhancing.
Find that in actual applications there is critical defect in design in the said goods.Can be such as driving engine when the vehicle ' because of certain reason flame-out (multiple factor can cause engine off such as oil circuit, gas circuit, circuit and automatically controlled fault etc.) suddenly, at this moment vacuum cylinder no longer produces negative pressure, servo-unit no longer works, only the foot-operated power with steerman is difficult to car is braked, will certainly cause the major accident danger to start, this type of accident has not been an example.Brake boost actv. device is occurred.
Summary of the invention
Technical problem to be solved in the utility model is at above-mentioned present situation, provides a kind of and can also can make braking actv. device under the emergency state that driving engine stops working suddenly.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: the front end at general-duty vacuum servo formula hydraulic braking sysgtem vacuum reservoir installs an electronic minipump additional, power by vehicular power-bottle, one negative pressure switch is installed on the vacuum reservoir, when degree of vacuum during less than setting value, the work of switch opens control minipump, automatic vacuum.
As improvement, described electronic minipump is connected with vacuum cylinder by pipeline, and power supply is provided by vehicular power-bottle.
As improving, negative pressure switch is installed on the vacuum cylinder again, and with car key switch and electronic minipump wire joint, its working pressure range equals the nominal operation negative pressure of vacuum booster.
As further improvement, negative pressure switch, electronic minipump, key switch and vehicular power-bottle wire joint become a series connection circuit.
Compared with prior art, the utility model is by on the basis of traditional braking vacuum booster, increase an electronic minipump and a negative pressure switch, the vehicle that assurance is travelled can have the failure-free brake system when the emergency situations of engine off occurring, avoid serious accident to take place, very strong practical and popularizing value is arranged.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment;
Fig. 2 is the schematic circuit diagram of the utility model embodiment.
The specific embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
As shown in Figure 1 and Figure 2, existing brake vacuum power-assisted owner will be made up of plate disc brake (1), vacuum cylinder (2), apportioning valve (3), drum brake mechanism (4), control cock (5), afterburning air chamber (6), series connection two-chamber master brake cylinder (7) etc.The utility model is to go up at the vacuum cylinder (2) of existing vacuum booster to increase a negative pressure switch (8), does a bypass on the pipeline (9) of access to engine air inlet pipe, a miniature electric vacuum pump (10) is installed.Negative pressure switch (8), electronic minipump (10), car key switch (12) and vehicular power-bottle (11) wire joint become a series connection circuit.
In actual use, the work range of negative pressure that negative pressure switch (8) is set equals the work negative pressure value scope of corresponding automobile, the interior maintenance work of vacuum cylinder in the cruising process (2) negative pressure, negative pressure switch (8) turn-offs, not conducting of circuit, when occurring the suddenly flame-out faults such as (the car key switch are in conducting state) of driving engine self under steam, in case vacuum cylinder no longer includes negative pressure in (2), negative pressure switch (8) is just opened and is made circuit turn-on, miniature electric vacuum pump (10) work, stop after vacuum cylinder (2) is pumped into working vacuum, this process circulation is carried out, keep in the vacuum cylinder (2) the working vacuum state being arranged always, thereby guarantee that braking flexibly effectively avoids grave accident to take place under the emergency state of engine off.
When people's circuit when closing the car key switch is in off-state, this system does not work.
Claims (1)
1. auto brake system safety device, be on the vacuum cylinder (2) of vacuum servo formula hydraulic braking sysgtem, to install a negative pressure switch (8) additional, go up installation one miniature electric vacuum pump (10) at the pipeline (9) of access to engine air inlet pipe, it is characterized in that negative pressure switch (8), electronic minipump (10), car key switch (12) and vehicular power-bottle (11) wire joint become a series connection circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201248329U CN201520291U (en) | 2009-07-20 | 2009-07-20 | Safety device of braking system of automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201248329U CN201520291U (en) | 2009-07-20 | 2009-07-20 | Safety device of braking system of automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201520291U true CN201520291U (en) | 2010-07-07 |
Family
ID=42506470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201248329U Expired - Fee Related CN201520291U (en) | 2009-07-20 | 2009-07-20 | Safety device of braking system of automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201520291U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101973264A (en) * | 2010-10-18 | 2011-02-16 | 浙江吉利汽车研究院有限公司 | Electric vacuum pump control circuit of electric vehicle |
| CN102874243A (en) * | 2012-09-24 | 2013-01-16 | 杜喜堂 | Automobile vacuum-brake assisting device |
| CN112519742A (en) * | 2019-09-17 | 2021-03-19 | 比亚迪股份有限公司 | Vehicle brake boosting control system and method, storage medium and vehicle |
-
2009
- 2009-07-20 CN CN2009201248329U patent/CN201520291U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101973264A (en) * | 2010-10-18 | 2011-02-16 | 浙江吉利汽车研究院有限公司 | Electric vacuum pump control circuit of electric vehicle |
| CN101973264B (en) * | 2010-10-18 | 2013-04-24 | 浙江吉利汽车研究院有限公司 | Electric vacuum pump control circuit of electric vehicle |
| CN102874243A (en) * | 2012-09-24 | 2013-01-16 | 杜喜堂 | Automobile vacuum-brake assisting device |
| CN112519742A (en) * | 2019-09-17 | 2021-03-19 | 比亚迪股份有限公司 | Vehicle brake boosting control system and method, storage medium and vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100707 Termination date: 20140720 |
|
| EXPY | Termination of patent right or utility model |