CN2207316Y - Pressure-dividing automotive braking contracting-proof device - Google Patents
Pressure-dividing automotive braking contracting-proof device Download PDFInfo
- Publication number
- CN2207316Y CN2207316Y CN 94216973 CN94216973U CN2207316Y CN 2207316 Y CN2207316 Y CN 2207316Y CN 94216973 CN94216973 CN 94216973 CN 94216973 U CN94216973 U CN 94216973U CN 2207316 Y CN2207316 Y CN 2207316Y
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- piston
- brake
- pressure
- piston rod
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- Expired - Fee Related
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- Transmission Of Braking Force In Braking Systems (AREA)
Abstract
Disclosed is a pressure-dividing automotive braking contracting-proof device which is composed of a pull core, a three-way, a small piston, a large piston, a cylinder block, a piston rod, and a large elastomer. The small piston and the large piston are arranged into the passageway of the three-way and the cylinder block in sequence, and the lower end of the piston rod is connected with the large elastomer. The utility model adopts a multi-stage partial pressure theory. When the vehicle is in a situation of emergency braking, the small piston moves downward under the force of the brake fluid, and the large elastomer is compressed, so the internal pressure of the brake fluid misses the wheel lock point, however, a sufficient brake force is also provided. The utility model is with strong contracting-proof quality and good working linearising, and moreover, the utility model also has reliable structure, strong practicability, and strong safety.
Description
The utility model relates to a kind of automobile brake antioverbraking device, relates in particular to a kind of mechanical type anti-embracing unit of partial pressure type hydraulic-braking system.
When the vehicle in travelling need slow down or stop, be in the hydraulic pressure auto brake system, to utilize hydraulic power source to promote piston, the brake strap with friction material surface be pressed onto on the brake wheel and wheel braking.In general hydraulic pressure auto brake system, self-propelled vehicle is in the emergency braking process, because the relative incompressibility of osed top brake fluid, friction braking shoe plate and brake wheel can produce locking phenomenon, cause the wheel traction, make and cause traffic accident to lose control of one's vehicle.So anti-embracing unit of brake generally is housed on the vehicle.Adopting the mechanical type anti-embracing unit of elastic body accumulation of energy principle is exactly a kind of anti-embracing unit of brake of using always.
Faults such as elastic body breaks, brake system air inlet often appear in existing elastic body energy-storage type anti-embracing unit, thereby jeopardize traffic safety.
The purpose of this utility model provides a kind of partial pressure type automobile brake antioverbraking device, faults such as the elastic body that can solve existing elastic body energy-storage type anti-embracing unit often has breaks, brake system air inlet, and have good anti-embracing property.
The purpose of this utility model is achieved in that it is by drawing core (1), threeway (2), valve piston (3), big piston (4), cylinder body (5), piston rod (6), big elastic body (10) to form, valve piston (3) and big piston (4) are packed in the passage of threeway (2) and cylinder body (5) successively, and the lower end of piston rod (6) is connected with big elastic body (10).
This device is contained in the hydraulic tubing of automobile brake general pump, when the automobile emergency glancing impact, brake fluid enters in threeway and the cylinder body by drawing core, continuous rising along with oil pressure in the pipeline, valve piston moves downward under the effect of brake fluid pressure, big elastic body is compressed, and makes braking liquid internal pressure out of reach wheel lockup point, has enough braking forces again.
The utility model is because of adopting multistage voltage divider principle, so prevent that armful characteristic is strong, work good linearity, and reliable in structure, practicality, high safety.
Describe structure of the present utility model and service condition in detail below in conjunction with embodiment and accompanying drawing thereof.
Accompanying drawing is the structural representation of the utility model embodiment.
Among the figure, 1-draws the big elastic body 11-of core 2-threeway 3-valve piston 4-big piston 5-cylinder body 6-piston rod 7-endless groove 8-boosting-rod 9-submissile gonosome 10-ball valve 12-fuel return hole
Partial pressure type automobile brake antioverbraking device shown in the drawings, form by drawing core (1), threeway (2), valve piston (3), big piston (4), cylinder body (5), piston rod (6), big elastic body (10), valve piston (3) and big piston (4) are packed in the passage of threeway (2) and cylinder body (5) successively, and the lower end of piston rod (6) is connected with big elastic body (10).
Be shaped on several endless grooves (7) on piston rod (6), boosting-rod (8) inserts in the endless groove (7), and the other end of boosting-rod is connected with little elastic body (9).
The sectional area of big piston (4) is 2 times of sectional area of valve piston (3).
Giving pressure and can fixing of big elastic body (10) also can be adjustable.
The core (1) that draws of this device is connected in the hydraulic tubing of automobile brake general pump, when the driver steps the braking automobile pedal, makes the automobile emergency glancing impact, the brake fluid in the pipeline enters in the threeway (2) by drawing the aperture on the core (1).Along with the oil pressure in the pipeline constantly raises, oil pressure acts on the valve piston (3), makes valve piston move down.The power of big elastic body (10) acts directly on the lower end of piston rod (6).Because boosting-rod (8) directly inserts in the endless groove (7) of piston rod (6), the power of little elastic body (9) just indirectly-acting in the lower end of piston rod (6).Want to promote valve piston and move down, the oil in the hydraulic tubing just must have higher pressure, so make brake carry and brake drum between produce locking phenomenon, the automobile in the starting stage of brake makes rapidly obtains bigger brake weight.The antagonistic force that drum was carried when feeding that continues along with brake pedal and brake were carried with the brake drum locking all acts on the brake solution, and the hydraulic pressure in the pipeline can increase substantially suddenly, and at this moment valve piston is forced to move downwards.When valve piston (3) skids off the passage at itself place, the high hydraulic brake fluid just passage by valve piston (3) enters big cylinder body (5) and acts on the big piston (4), because the sectional area of big piston (4) is 2 times of valve piston (3) sectional area, so just makes the suffered downward pressure of piston rod (6) be doubled and redoubled.Simultaneously, along with moving down of piston rod (6), boosting-rod (8) has been deviate from the endless groove (7) of piston rod (6) lower end, and will slip in the top endless groove, at this moment, boosting-rod (8) not only can not give the power of piston rod (6) to make progress, give piston rod (6) with a downward power on the contrary, this just makes piston rod (6) flat-out acceleration move down, and acts on the also release suddenly of high pressure brake fluid on the piston rod (6), makes the fluid in the pipeline produce concussion.Because big elastic body (10) constantly is compressed, and that it acts on the upward force of piston rod (6) is also increasing, add boosting-rod (8) constantly to deviate from and slip into a top endless groove by a following endless groove, little when big when also making the suffered pressure of brake fluid in the pipeline, make brake solution be the pulsating nature concussion, thereby obtain to prevent in the brake process effect of wheel lockup.
Braking finishes, and braking liquid is got back in the brake system pipeline by ball valve (11) and fuel return hole (12) and gone.
The utility model makes brake system of car both have the very strong anti-characteristic of embracing in Motor Vehicle Braking Procedure, has enough big negative acceleration again.
Claims (2)
1, a kind of partial pressure type automobile brake antioverbraking device, form by drawing core (1), threeway (2), valve piston (3), big piston (4), cylinder body (5), piston rod (6), big elastic body (10), it is characterized in that: valve piston (3) and big piston (4) are packed in the passage of threeway (2) and cylinder body (5) successively, and the lower end of piston rod (6) is connected with big elastic body (10).
2, partial pressure type automobile brake antioverbraking device according to claim 1 is characterized in that: be shaped on several endless grooves (7) on the piston rod (6), boosting-rod (8) inserts in the endless groove, and the other end of boosting-rod is connected with little elastic body (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94216973 CN2207316Y (en) | 1994-07-18 | 1994-07-18 | Pressure-dividing automotive braking contracting-proof device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94216973 CN2207316Y (en) | 1994-07-18 | 1994-07-18 | Pressure-dividing automotive braking contracting-proof device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2207316Y true CN2207316Y (en) | 1995-09-13 |
Family
ID=33832534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94216973 Expired - Fee Related CN2207316Y (en) | 1994-07-18 | 1994-07-18 | Pressure-dividing automotive braking contracting-proof device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2207316Y (en) |
-
1994
- 1994-07-18 CN CN 94216973 patent/CN2207316Y/en not_active Expired - Fee Related
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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 |