CN207120740U - A kind of master cylinder and its brakes - Google Patents
A kind of master cylinder and its brakes Download PDFInfo
- Publication number
- CN207120740U CN207120740U CN201720761853.6U CN201720761853U CN207120740U CN 207120740 U CN207120740 U CN 207120740U CN 201720761853 U CN201720761853 U CN 201720761853U CN 207120740 U CN207120740 U CN 207120740U
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- piston
- master cylinder
- cylinder body
- pressure chamber
- push rod
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Abstract
The utility model discloses a kind of master cylinder, including master cylinder body and push rod fork and the piston being located in master cylinder body, the piston includes first piston and the second piston being arranged side by side, the first piston is connected with push rod fork, the first piston builds pressure chamber by forming first between sealing ring and second piston in master cylinder body, the second piston forms second by sealing ring and master cylinder body and builds pressure chamber, first piston spring is provided between the first piston and second piston, second piston spring is provided between second piston and the bottom of master cylinder body, corresponding pressure chamber of each building is equipped with an oil outlet on the master cylinder body.Front and rear to set two to build pressure chamber supercharging, its is simple in construction, and master cylinder inner components are less, and it is low to make simple cost, without idle stroke, there is provided braking effect.
Description
Technical field
Vehicle brake technology field is the utility model is related to, more particularly, to a kind of master cylinder and its brakes.
Background technology
Master cylinder is the critical component in brake system of car, and its effect is to promote master cylinder by the effect of pedal force
In piston move forward, make master cylinder hydrodynamic force, and by master cylinder outlet mouth to vehicle brakes delivery hydraulic pressure
Power, so as to realize braking.
Traditional automobile braking master cylinder mainly has two kinds of structures of center valve type and plunger type, and design philosophy is basically identical, its
It is mainly characterized by：1st, the brake master cylinder assy has two oil inlets, two feed flow chambers, is connected with receiver, supplements vehicle system
Brake fluid needed for dynamic loss；2nd, described two feed flow chambers of master cylinder assembly and two build between pressure chamber have respectively a center valve port or
Fluid infusion hole, after ensuring that vehicle braking is exited, brake system pressure is let out remove completely；3rd, the master cylinder assembly is because there is center valve port
Or fluid infusion hole, master cylinder assembly after the valve port or fluid infusion bore closure first must can just be built pressure during shifting movement before piston, thus it is main
Cylinder assembly has about 1-2mm idle strokes.
Chinese patent literature if patent publication No. is CN02218138 discloses a kind of center valve type brake main cylinder, including master
Cylinder, piston, return spring and centre valve, centre valve are assemblied in the shoulder cavity that piston crown opens up, and it is close by valve push rod, valve
Seal, valve return spring, spacer pin are formed, and centre valve is turned on and off with piston movement, controls the brake fluid pressure of brake chamber.
Its shortcoming of existing scheme is master cylinder arrangement complexity, and inner body is more, and cost is high and increases the backlash of brake pedal.
Utility model content
In view of the shortcomings of the prior art, technical problem to be solved in the utility model is to provide a kind of master cylinder and its system
Dynamic system, master cylinder arrangement is simple to reach, and without the purpose of idle stroke.
In order to solve the above-mentioned technical problem, technical scheme is used by the utility model：
A kind of master cylinder, including master cylinder body and push rod fork and the piston that is located in master cylinder body, institute
State piston including the first piston being arranged side by side and second piston, the first piston with push rod fork to be connected, the first piston
Pressure chamber is built by forming first between sealing ring and second piston in master cylinder body, the second piston passes through sealing ring
Formed with master cylinder body and second build pressure chamber, be provided with first piston spring between the first piston and second piston, second
Second piston spring is provided between piston and the bottom of master cylinder body, is corresponded on the master cylinder body and each builds pressure chamber
It is equipped with an oil outlet.
The sealing ring on sealing ring and second piston on the first piston is sealing cup.
The push rod fork is connected by input lever with the outer end of first piston, the outer end of the input lever and first piston it
Between by bulb rivet be connected.
The openend of the master cylinder body, which is provided with, is used for the back-up ring spacing to first piston.
Corresponding pressure chamber of each building is equipped with a steam vent on the master cylinder body.
The inside of the first piston and second piston is equipped with counterbore.
The counterbore is cone angle counterbore, and is provided with the through hole being connected with cone angle counterbore on the piston body.
A kind of brakes, including electric brake system and vehicle brake, the electric brake system are braked with vehicle
Device is connected, in addition to pedal sense simulator and described master cylinder, an oil outlet on the master cylinder body with
Pedal sense simulator is connected, and another oil outlet on master cylinder body is connected with electric brake system.
One on the master cylinder body is provided with pedal electrification magnet valve between oil outlet and pedal sense simulator.
Input lever in the push rod fork or between push rod fork and first piston is provided with displacement transducer.
The utility model compared with prior art, has advantages below：
The brake master cylinder structure is reasonable in design, front and rear to set two to build pressure chamber supercharging, saves the knot in many traditional master cylinders
Structure and part, its is simple in construction, and master cylinder inner components are less, and it is low to make simple cost, without idle stroke, there is provided braking effect
Fruit.
Brief description of the drawings
The content expressed by each width accompanying drawing of this specification and the mark in figure are briefly described below：
Fig. 1 is the utility model master cylinder schematic cross-sectional view.
Fig. 2 is the utility model piston schematic cross-sectional view.
Fig. 3 is the utility model brakes normal work schematic diagram.
Fig. 4 is that the utility model brakes mechanical backup brakes schematic diagram.
Fig. 5 is the utility model active boost schematic diagram.
In figure：
01. push rod fork, 02. input lever, 03. first piston, 03-1. cone angles counterbore, 03-2. inclined holes, 04. back-up ring, 05. system
Dynamic master cylinder body, 05-1. steam vents, 05-2. oil outlets, 06-1. first pistons spring, 06-2. second pistons spring, 07-1.
Sealing cup I, 07-2. sealing cups II, 07-3. sealing cups III, 08. second piston, 09. displacement transducer, 10. pedal senses
Magnetic valve, 11. pedal sense simulators, 12. electric brake systems, 13. vehicle brakes I, 14. vehicle brakes II, 15. are whole
Car brake III, 16. vehicle brakes IV.
Embodiment
Below against accompanying drawing, by the description to embodiment, specific embodiment of the present utility model is made further detailed
Thin explanation.
As shown in Figures 1 to 5, the brake master cylinder structure is reasonable in design, front and rear to set two to build pressure chamber supercharging, saves a lot
Structure and part in traditional master cylinder.
Input lever 02 is coordinated with push rod fork 01 by welding or locking nut and is connected, and the inner of input lever is riveted by bulb
It is connected with the outer end of first piston 03, to ensure the flexibility of input lever motion.And displacement sensing is provided with input lever
Device 09.
Piston is arranged in master cylinder body 05, and piston includes first piston 03 and the second piston 08 being arranged side by side.
The 07-3 of sealing cup III is fixed with the water jacket of first piston 03, with the sealing cup I on second piston, second piston water jacket
07-1 and master cylinder body form an annular seal space, that is, form first and build pressure chamber.
The left end of first piston 03 is provided with first piston spring 06-1, and is provided with and uses in the openend of master cylinder body
In the back-up ring 04 spacing to first piston.In the presence of first piston spring, first piston right-hand member can be pressed on back-up ring, gear
Circle is stuck in the annular groove on master cylinder body.
The 07-2 of sealing cup II is fixed with the water jacket of second piston 08, another is formed with the bottom of master cylinder body
Annular seal space, that is, form second and build pressure chamber.
The left end of second piston 08 installs a second piston spring 06-2, and under second piston spring effect, second lives
Plug right-hand member is pressed on first piston spring.
Corresponding pressure chamber of each building is equipped with a steam vent 05-1 on master cylinder body 05, steam vent and bleed screw or
Exhaust passage is connected, and is easy to master cylinder assembly to be vented.
Corresponding pressure chamber of each building is equipped with an oil outlet 05-2 on master cylinder body 05.The oil-out can be with pedal sense
Feel that simulator or brake are connected, there is provided required hydraulic coupling, can also be connected with receiver or electric brake system, supplement master cylinder
Brake fluid needed for assembly.
The inside of first piston and second piston is equipped with counterbore, to mitigate pts wt, while for ease of exhaust.Counterbore
For cone angle counterbore 03-1, and the through hole being connected with cone angle counterbore is provided with the piston body；Preferably, through hole is inclined hole 03-2,
Lift exhaust effect.
Brakes, including electric brake system 12 and vehicle brake and pedal sense simulator 11, deceleration of electrons
System 12 is connected with vehicle brake, and on master cylinder body a oil outlet is connected with pedal sense simulator 11, braking
Another oil outlet on master cylinder body is connected with electric brake system 12, on master cylinder body a oil outlet and pedal
Pedal electrification magnet valve 10 is provided between sense simulator.Vehicle brake is four brakes, respectively vehicle brake I 13,
Vehicle brake II 14, vehicle brake III 15, vehicle brake IV 16, four vehicle brakes with electric brake system phase
Even.
The power passed over by brake pedal, by push rod fork 01 and input lever 02, first piston 03 is promoted to overcome the
After one piston spring 06-1 installing forces together with sealing cup III preceding shifting movement, and compress first build pressure intracavitary brake fluid, simultaneously
The preceding shifting movement together with sealing cup I, II after second piston spring 06-2 is overcome of second piston 08 is driven, and compresses second and builds
Chamber brake fluid is pressed, realizes that two build pressure chamber while are pressurized and discharge brake fluid.
As shown in figure 3, loop during brakes normal work：
When driver's brake pedal, push rod fork 01 and input lever 02 promote master cylinder first piston 03 overcoming the first work
Moved forward together after plug spring 06-1 installing forces, when simultaneous displacement sensor 09 obtains the braking intention of driver, electronics system
Dynamic system 12 can close the valve port that the oil-out of master cylinder two is connected with electric brake system, it is ensured that master cylinder discharge liquid does not flow into electronics
Brakes, and open simultaneously pedal electrification magnet valve 10, the intracavitary of brake master cylinder assy first by compression brake liquid, be drained into and step on
In plate sense simulator PFS, the PV curve fittings loaded by the inner chamber of pedal sense simulator 11 design the cylinder diameter of master cylinder
And stroke, so as to obtain the brake pedal feel for meeting operator demand, electric brake system 12 is according to displacement transducer in addition
09 signal, the brake pressure needed for vehicle is exported, to brake to ensure driving safety.
As shown in figure 4, loop when brakes mechanical backup is braked：
For technical solutions of the utility model under electric brake system failure conditions, the master cylinder will enter mechanical backup
Braking mode, i.e. driver's brake pedal, two brake fluid for building pressure chamber are compressed in master cylinder, output brake fluid warp
Electric brake system is crossed to four wheel vehicle brakes, realizes that mechanical backup is braked, to ensure driving safety.
As shown in figure 5, loop during active boost：
Vehicle, can be according to the condition of road surface and travel conditions of vehicle, electric brake system when driver does not brake intervention
Braking requirement can be judged or receive braking requirement signal, to the brake active boost in brakes.Because this practicality is new
The master cylinder assembly of type is connected with brake by electric brake system, and brake high pressure liquid may not flow into master cylinder assembly, will not
There is the problems such as pedal top pin.
The utility model is exemplarily described above in conjunction with accompanying drawing, it is clear that the utility model specific implementation not by
The limitation of aforesaid way, as long as employing the improvement of the various unsubstantialities of design of the present utility model and technical scheme progress,
Or it is not improved by it is of the present utility model design and technical scheme directly apply to other occasions, in guarantor of the present utility model
Within the scope of shield.
Claims (10)
1. a kind of master cylinder, including master cylinder body and push rod fork and the piston that is located in master cylinder body, it is special
Sign is：The piston includes first piston and the second piston being arranged side by side, and the first piston is connected with push rod fork, described
First piston builds pressure chamber by forming first between sealing ring and second piston in master cylinder body, and the second piston is led to
Cross sealing ring and build pressure chamber with master cylinder body formation second, first piston bullet is provided between the first piston and second piston
Second piston spring is provided between the bottom of spring, second piston and master cylinder body, is corresponded on the master cylinder body every
Individual pressure chamber of building is equipped with an oil outlet.
2. master cylinder as claimed in claim 1, it is characterised in that：On sealing ring and second piston on the first piston
Sealing ring is sealing cup.
3. master cylinder as claimed in claim 1, it is characterised in that：The push rod fork passes through input lever and the outer end of first piston
It is connected, is connected between the input lever and the outer end of first piston by bulb riveting.
4. master cylinder as claimed in claim 1, it is characterised in that：The openend of the master cylinder body, which is provided with, to be used for the
The back-up ring of one piston limit.
5. master cylinder as claimed in claim 1, it is characterised in that：Corresponding pressure chamber of each building is all provided with the master cylinder body
There is a steam vent.
6. master cylinder as claimed in claim 1, it is characterised in that：It is heavy that the inside of the first piston and second piston is equipped with
Hole.
7. master cylinder as claimed in claim 6, it is characterised in that：The counterbore is cone angle counterbore, and is provided with the piston body
The through hole being connected with cone angle counterbore.
8. a kind of brakes, including electric brake system and vehicle brake, the electric brake system and vehicle brake
It is connected, it is characterised in that：Also include pedal sense simulator and the master cylinder as described in any one of claim 1 to 7, it is described
An oil outlet on master cylinder body is connected with pedal sense simulator, another oil outlet on master cylinder body with
Electric brake system is connected.
9. brakes as claimed in claim 8, it is characterised in that：An oil outlet and pedal on the master cylinder body
Pedal electrification magnet valve is provided between sense simulator.
10. brakes as claimed in claim 8, it is characterised in that：In the push rod fork or push rod fork and first piston it
Between input lever be provided with displacement transducer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720761853.6U CN207120740U (en) | 2017-06-28 | 2017-06-28 | A kind of master cylinder and its brakes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720761853.6U CN207120740U (en) | 2017-06-28 | 2017-06-28 | A kind of master cylinder and its brakes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207120740U true CN207120740U (en) | 2018-03-20 |
Family
ID=61615750
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720761853.6U Active CN207120740U (en) | 2017-06-28 | 2017-06-28 | A kind of master cylinder and its brakes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207120740U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107199999A (en) * | 2017-06-28 | 2017-09-26 | 芜湖伯特利汽车安全系统股份有限公司 | Master cylinder and its brakes |
| CN108909691A (en) * | 2018-07-19 | 2018-11-30 | 宁波拓普智能刹车系统有限公司 | A kind of pedal input rod structure of automobile brake force aid system |
-
2017
- 2017-06-28 CN CN201720761853.6U patent/CN207120740U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107199999A (en) * | 2017-06-28 | 2017-09-26 | 芜湖伯特利汽车安全系统股份有限公司 | Master cylinder and its brakes |
| CN108909691A (en) * | 2018-07-19 | 2018-11-30 | 宁波拓普智能刹车系统有限公司 | A kind of pedal input rod structure of automobile brake force aid system |
| CN108909691B (en) * | 2018-07-19 | 2024-02-23 | 宁波域想线控底盘有限公司 | Pedal input rod structure of automobile brake booster system |
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