CN206327344U - The automobile brake general pump of adjustable sensitivity - Google Patents
The automobile brake general pump of adjustable sensitivity Download PDFInfo
- Publication number
- CN206327344U CN206327344U CN201621169920.7U CN201621169920U CN206327344U CN 206327344 U CN206327344 U CN 206327344U CN 201621169920 U CN201621169920 U CN 201621169920U CN 206327344 U CN206327344 U CN 206327344U
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- CN
- China
- Prior art keywords
- foot
- adjusting nut
- control piston
- automobile brake
- tappet
- 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.)
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- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
The utility model is related to a kind of automobile brake general pump, including the pump housing, the control piston in the pump housing, valve and foot-operated tappet, and the bottom of the foot-operated tappet is screw rod, and adjusting nut is connected with thereon, on the outer peripheral face of the adjusting nut, cotter way is offered vertically；The control piston base is provided with latch close to the threaded shank office of foot-operated tappet, and the latch is located in the cotter way.The utility model can adjust the sensitivity of automobile brake as needed.
Description
Technical field
The utility model is related to the air brake valve in automobile brake system, particularly a kind of automobile brake general pump.
Background technology
In automobile brake system, master cylinder by controlling the output of compressed gas to control the opening and closing of gas relay valve,
So as to control wheel cylinder, the braking of automobile is realized in final control brake-shoe action.
Existing automobile brake general pump configurations, but operation principle is substantially the same.Such as patent
" double lotus master cylinder " disclosed in CN200920112706.1, as shown in Fig. 2 mainly including the pump housing 4 and in the pump housing 4
Control piston 14, foot-operated tappet 1 be installed on control piston 14, be set with compression spring 15 on foot-operated tappet 1, and with control
Piston 14 is slidably matched.Control that there is first chamber 13 and second chamber 11 between piston 14 and the pump housing 4, under control piston 14
Side be provided with valve 7, the bottom of the pump housing 4 is provided with exhaust vent 9, on the pump housing 4 provided with compressed gas air inlet 10 with
And rear brake gas outlet 6 and gas outlet 8 of before stopping.
Its braking procedure of the automobile brake general pump of this kind of structure is：During brake pedal, tappet is ridden by downward
Power, it promotes control piston to move down by compression spring, makes control piston promote valve descending, so that the valve is opened,
Compressed gas in from compressed gas air inlet into the pump housing enters second chamber through the valve, then is gone out by second chamber to rear brake
Gas port（Compressed gas is just no longer described from air inlet to the course of work for gas outlet of preceding stopping simultaneously）.
When compressed gas enters second chamber, it will press to the step end face for controlling piston, promote control piston gram
Take that compression spring force is up, reduce the aperture of valve, so as to cause the pressure drop of compressed gas exported from rear brake gas outlet
It is low, the brake force of brake is reduced, complete Brake stop needs the long period from brake pedal to automobile, i.e. automobile brake
Sensitivity is poor, braking is weak.
The content of the invention
The purpose of this utility model is to provide a kind of automobile brake general pump of adjustable sensitivity, can be as needed
Adjust the sensitivity of automobile brake.
The automobile brake general pump of adjustable sensitivity described in the utility model, including the pump housing, the control in the pump housing
Piston processed, valve, and be slidably matched with control piston and be set with the foot-operated tappet of compression spring, it is characterised in that：It is described
The bottom of foot-operated tappet is screw rod, and adjusting nut is connected with thereon, on the outer peripheral face of the adjusting nut, pin is offered vertically
Groove；The control piston base is provided with latch close to the threaded shank office of foot-operated tappet, and the latch is located at the cotter way
It is interior.
By changing position of the adjusting nut on foot-operated tappet, to change between adjusting nut and control piston base
Distance, so as to adjust the displacement that control piston is moved up under compressed gas effect, realizes the regulation of automobile brake sensitivity.
Adjusting nut is when the change for riding position on tappet can realize rotary pedals tappet by rotary pedals tappet, without dismounting
The automobile brake general pump, need to only be rotated with instrument to the upper end for exposing the foot-operated tappet at the top of automobile brake general pump.
The latch for being fixed on control piston base is located in the cotter way of adjusting nut, and adjusting nut can be prevented relative to control piston rotation
Turn, play a part of " key ", during foot-operated tappet rotation, nut is by simultaneously along the screw rod and stop for controlling piston lower portion
Pin is moved up and down.
The utility model is due to the adjusting nut that spun in foot-operated tappet bottom, by changing adjusting nut foot-operated
Position on tappet is the regulation that automobile brake sensitivity can be achieved, so as to according to car category and loading capacity to automobile brake
Sensitivity is adjusted, and overcomes the weak defect of existing automobile system, and the regulation of adjusting nut is simple to operate.To heavy or
The big automobile of loading capacity, can reduce adjusting nut and control the distance between piston base, or even adjusting nut is lived with control
Fill in bottom contact（This is the extreme position that adjusting nut is adjusted downwards）, to improve the sensitivity of braking；To light-duty or loading capacity
Small automobile, it is possible to increase adjusting nut is with controlling the distance between piston base, until adjusting nut does not work（Adjust spiral shell
Mother contacts in the middle part of braking procedure with control piston base）, to reduce the sensitivity of braking.The visual vapour of sensitivity of automobile brake
Car situation is adjusted, so as to improve the braking ability of automobile, the security of running car obtains reliable guarantee.
Brief description of the drawings
Fig. 1 is a kind of schematic cross-sectional view of concrete structure of the utility model；
Fig. 2 is the schematic cross-sectional view of the specific existing structure of this kind of the utility model；
Fig. 3 is the front view of adjusting nut.
Embodiment
As shown in figure 1, the automobile brake general pump of the adjustable sensitivity, including the pump housing 4 and the control in the pump housing 4
Piston 14 processed, foot-operated tappet 1 is provided with control piston 14, compression spring 15 is set with foot-operated tappet 1, and live with control
Plug 14 is slidably matched, and has first chamber 13 and second chamber 11 between control piston 14 and the pump housing 4, controls the lower section of piston 14
Be provided with valve 7, the bottom of the pump housing 4 be provided with exhaust vent 9, on the pump housing 4 provided with compressed gas air inlet 10 and
Rear brake gas outlet 6 and gas outlet 8 of before stopping.The bottom of foot-operated tappet 1 is screw rod, adjusting nut 3 is connected with thereon, the adjusting nut
On 3 outer peripheral face, cotter way 16 is offered vertically, and control piston 14 bottom is provided with close to the threaded shank office of foot-operated tappet 1
Latch 12, the latch 12 is located in the cotter way 16.
When needing to improve sensitivity to the limit, foot-operated tappet 1 is rotated, adjusting nut 3 is displaced downwardly to adjusting nut 3
Contacted with control piston 14 bottom.During braking, brake pedal, foot-operated tappet 1 is moved down, and control is pressed by adjusting nut 3
Piston 14 is descending immediately, and promotes valve 7 to open valve, the compressed gas entered from compressed gas air inlet 10 in the pump housing 4
Enter second chamber 11 through the valve, then by second chamber 11 to rear brake gas outlet 6.During this, although compressed gas is to control
The step end face 5 of piston 14 processed is applied with pressure, but because foot-operated tappet 1 is pressed against controlling the bottom of piston 14 by adjusting nut 3
Portion, makes control piston 14 not moved up under compressed gas effect, therefore the aperture of valve can keep maximum rating, go out rear brake
Gas port 6 has maximum gas output, this kind of situation sensitivity highest always.
When needing slightly to reduce sensitivity, foot-operated tappet 1 is rotated, makes to move on adjusting nut 3 and control piston
14 bottoms have certain distance.During braking, brake pedal, foot-operated tappet 1 is moved down, and pressing control by compression spring 15 lives
Fill in 14 descending, and promote valve 7 to open valve, the compressed gas entered in the pump housing 4 from compressed gas air inlet 10 is through the valve
Door enters second chamber 11, then by second chamber 11 to rear brake gas outlet 6.During this, compressed gas is to control piston 14
Step end face 5 apply pressure, move up control piston 14, cause valve opening to reduce, after it moves up a slight distance just with
Adjusting nut 3 is contacted, and stopping continues to move up, and valve opening stops continuing to reduce, and valve opening is slightly less than the maximum opening of valve,
The gas output of rear brake gas outlet 6 is slightly less than maximum gas output, and sensitivity has declined.
When needing to return to the sensitivity that existing master cylinder can reach, foot-operated tappet 1 is rotated, makes regulation spiral shell
Moved on mother 3 in whole braking procedure, the position that adjusting nut 3 will not be contacted with control piston 14 bottom is now adjusted
Nut 3 does not work in braking procedure, sensitivity reduction.
Claims (1)
1. a kind of automobile brake general pump of adjustable sensitivity, including the pump housing（4）, control piston in the pump housing
（14）, valve（7）, and be slidably matched with control piston and be set with compression spring（15）Foot-operated tappet（1）, its feature exists
In：The bottom of the foot-operated tappet is screw rod, and adjusting nut is connected with thereon（3）, on the outer peripheral face of the adjusting nut, vertically
Offer cotter way（16）；The control piston base is provided with latch close to the threaded shank office of foot-operated tappet（12）, should be only
Dynamic pins position is in the cotter way.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621169920.7U CN206327344U (en) | 2016-11-02 | 2016-11-02 | The automobile brake general pump of adjustable sensitivity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621169920.7U CN206327344U (en) | 2016-11-02 | 2016-11-02 | The automobile brake general pump of adjustable sensitivity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206327344U true CN206327344U (en) | 2017-07-14 |
Family
ID=59286180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621169920.7U Active CN206327344U (en) | 2016-11-02 | 2016-11-02 | The automobile brake general pump of adjustable sensitivity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206327344U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106476774A (en) * | 2016-11-02 | 2017-03-08 | 彭伟桓 | A kind of automobile brake general pump of scalable sensitivity |
-
2016
- 2016-11-02 CN CN201621169920.7U patent/CN206327344U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106476774A (en) * | 2016-11-02 | 2017-03-08 | 彭伟桓 | A kind of automobile brake general pump of scalable sensitivity |
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