CN107813808A - A kind of air booster assembly applied to brake fluid system - Google Patents
A kind of air booster assembly applied to brake fluid system Download PDFInfo
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- CN107813808A CN107813808A CN201711142498.5A CN201711142498A CN107813808A CN 107813808 A CN107813808 A CN 107813808A CN 201711142498 A CN201711142498 A CN 201711142498A CN 107813808 A CN107813808 A CN 107813808A
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- air inlet
- inlet seat
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/24—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being gaseous
- B60T13/26—Compressed-air systems
- B60T13/40—Compressed-air systems indirect, i.e. compressed air booster units indirect systems
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Braking Systems And Boosters (AREA)
Abstract
The invention belongs to brake fluid system technical field, more particularly to a kind of air booster assembly applied to brake fluid system, including input push rod, air inlet seat, piston cylinder, valve body, procapsid, boosting piston, back casing, reinforcing plate, output push rod, boosting piston return spring, input push rod anti-shedding mechanism, piston return spring, piston, rubber spring, valve, valve return spring and valve sleeve；By the use of pressure-air as power-assisted source, dynamic equilibrium is realized using rubber spring and piston, improves the stopping power of brake fluid system.
Description
Technical field
The invention belongs to brake fluid system technical field, and in particular to a kind of air pressure applied to brake fluid system helps
Power device assembly.
Background technology
The brake fluid system of traditional light truck uses vacuum booster assembly more, because vacuum booster assembly by
The limitation of structure and size and atmospheric pressure, is applicable only to the light truck of small tonnage, and vacuum booster assembly
Power-assisted effect is weak, while for state five, the discharge standard of state six, light truck need to be furnished with high-pressure air source as urea supply system
The driving of system, therefore using air booster come to substitute vacuum booster be that light cargo vehicle brake fluid system is improved
Key subjects；High-pressure air source is equipped with still using the vehicle of vacuum boost system, using air pressure relative to state five, the discharge standard of state six
Force aid system cost is lower, but air booster of the prior art is only realized with dynamic balancing by valve, is braked when braking be present
The shortcomings of pedal trackability and brake feel difference.
The content of the invention
In order to overcome above mentioned problem, the present invention provides a kind of air booster assembly applied to brake fluid system, profit
By the use of pressure-air as power-assisted source, dynamic equilibrium is realized using rubber spring and piston, improves the Brake Energy of brake fluid system
Power.
The technical solution adopted in the present invention is：
A kind of air booster assembly applied to brake fluid system, including input push rod 1, air inlet seat 2, piston cylinder 4,
Valve body 5, procapsid 6, boosting piston 11, back casing 12, reinforcing plate 13, output push rod 15, boosting piston return spring 16, input
Push rod anti-shedding mechanism 20, piston return spring 27, piston 28, rubber spring 29, valve 33, valve return spring 34 and valve
Set 38, wherein procapsid 6 forms cavity after being fixedly connected with back casing 12, boosting piston 11 is arranged on back casing 12, by before
The cavity that housing 6 is formed after being fixedly connected with back casing 12 is separated into the first cavity A and the second cavity B, and in boosting piston 11
Boosting piston sealing ring 9 and boosting piston guide sleeve 10 are housed with the contact site of back casing 12；Reinforcing plate 13 is fixed on back casing
12 rearmost end, exhaust outlet 14 is offered on back casing 12；In the second described cavity B between boosting piston 11 and reinforcing plate 13
Boosting piston return spring 16 is provided with, wherein output push rod 15 is arranged in boosting piston return spring 16 and and boosting piston
11 are connected；
Input push rod anti-shedding mechanism 20 is made up of vulcanization back-up ring 39 and circlip for hole 40, and input push rod 1 passes through sulphur
It is fixed on after changing the boss that back-up ring 39 is snapped on input power push rod 1 by circlip for hole 40 in air inlet seat 2, that is, inputs push rod 1
It is connected by inputting push rod anti-shedding mechanism 20 with air inlet seat 2, while inputs push rod 1 and stretch into the part of air inlet seat 2 and guide pad
22 are in contact；
Air inlet seat 2 extend into be threadably secured with valve body 5 in valve body 5 and is connected, and valve body 5 is beloid cylinder, is entered
Gas seat 2 forms cavity in the wide one end of valve body 5 after being fixedly connected with valve body 5, and pacifies in air inlet seat 2 and the contact site of valve body 5
Equipped with rectangular seal 21, O-ring seal I23；Valve body 5, which is threadably secured, to be connected in piston cylinder 4, and is filled in contact site
There are O-ring seal IV26 and O-ring seal V31, the centre bore that piston cylinder 4 stretches into procapsid 6 with boosting piston 11 passes through spiral shell
Line is fixedly connected and sealed, and piston cylinder 4 is provided with piston cylinder sealing ring 17 with the contact site of procapsid 6, piston cylinder is oriented to
Set 18 and dust ring 19, because piston cylinder 4 is stretched into procapsid 6, so one end that the valve body 5 being fixed in piston cylinder 4 is narrow
In the centre bore for the boosting piston 11 being inserted into the first cavity A and the 5th cavity E is formed, valve body 5 contacts with boosting piston 11
Face is equipped with O-ring seal III25；
In the cavity that air inlet seat 2 and valve body 5 are formed built with piston 28, piston return is provided between piston 28 and valve body 5
Spring 27, is made up of piston 28 and valve body 5 and the cavity at the position of piston return spring 27 is the 4th cavity D, living
Plug one end of return spring 27 contacts with valve body 5, and the other end contacts with piston 28 and piston 28 is squeezed in air inlet seat 2；Piston 28
Be also equipped with O-ring seal I23 and piston guide set 30 between valve body 5, rubber spring 29 be arranged on piston 28 and air inlet seat 2 it
Between, the one end of guide pad 22 is stretched into air inlet seat 2 and inserted in the endoporus of rubber spring 29, the other end and air inlet seat of guide pad 22
2 contact and hole back-up ring I32 are provided with contact site, and the internal openings of guide pad 22 can simultaneously rise and lead in the internal slide of air inlet seat 2
To effect, its internal openings be used for exclude rubber spring 29 deform when between piston 28 and rubber spring 29 caused high pressure gas
Body；
The narrow one end of valve body 5 is internally provided with valve sleeve 38, and O-ring seal VI35 is housed between valve sleeve 38 and valve body 5
With hole back-up ring II36, valve 33 is housed on the endoporus of valve sleeve 38, valve 33 is squeezed in valve body 5 by valve return spring 34
On, and O-ring seal VII37 is provided between valve sleeve 38 and valve 33, be made up of valve body 5, valve 33 and valve sleeve 38 and
Cavity at the position of valve return spring 34 is the 3rd cavity C.
Inner groove 41, passage e, the boosting piston spiral shell for being connected with boosting piston 11 are provided with described piston cylinder 4
Line 42 and the first valve body screw thread 43 for being connected with valve body 5.
Three first passage d, three second channel g are provided with described boosting piston 11 and are connected with piston cylinder 4
First piston cylinder screw thread 111；
Air inlet 201, air inlet seat passage a and the second valve body spiral shell being connected with valve body 5 are provided with described air inlet seat 2
Line 202, the air inlet seat passage a ends of air inlet seat 2 are by the plug for seal of steel ball 3.
Three the first valve channel b are distributed with the described excircle of valve body 5, divide on the outside of 5 wide portion of valve body and narrow portion junction
Three the second valve channel f are furnished with, three the 3rd valve channel c, valve body 5 is distributed with the inside of 5 wide portion of valve body and narrow portion junction
On the second piston cylinder screw thread 52 that is additionally provided with the air inlet seat screw thread 51 being connected with air inlet seat 2 and is connected with piston cylinder 4.
Beneficial effects of the present invention are as follows：
1st, the stopping power compared to vacuum booster significantly increases, good braking effect；
2nd, power-assisted balance is realized by rubber spring and piston, brake pedal during braking is had good trackability and behaviour
Vertical sense；
3rd, the brake fluid system relative barometric pressure brakes cost of the large-tonnage light truck application present invention is low；
4th, the invention is used for the hydraulic braking light truck of state five, the discharge standard of state six, can be with urea supply
System uses same high-pressure air source, saves servo vacuum components of system as directed, substantially reduces integral vehicle cost.
Brief description of the drawings
Fig. 1 is the brake fluid system air booster assembly sectional view of the present invention.
Fig. 2 is the brake fluid system air booster assembly partial enlarged drawing of the present invention.
Fig. 3 is the brake fluid system air booster assembly partial enlarged drawing of the present invention.
Fig. 4 is the air inlet seat structural representation of the brake fluid system air booster assembly of the present invention.
Fig. 5 is the valve body structure schematic diagram of the brake fluid system air booster assembly of the present invention.
Fig. 6 is the piston cylinder structural representation of the brake fluid system air booster assembly of the present invention.
Fig. 7 is the boosting piston structural representation of the brake fluid system air booster assembly of the present invention.
Wherein：1 input push rod；2 air inlet seats；201 air inlets；A air inlet seat passages；202 second valve body screw threads；3 steel balls；4
Piston cylinder；41 inner grooves；E passages；42 boosting piston screw threads；43 first valve body screw threads；5 valve bodies；51 air inlet seat screw threads；52 second
Piston cylinder screw thread；The valve channels of b first；The valve channels of f second；The valve channels of c the 3rd；6 procapsids；7 bolt groups；8 sealing rings；
9 boosting piston sealing rings；10 boosting piston guide sleeves；11 boosting pistons；D first passages；G second channels；111 first piston cylinders
Screw thread；12 back casings；13 reinforcing plates；14 exhaust outlets；15 output push rods；16 boosting piston return springs；17 piston cylinder sealing rings；
18 piston cylinder guide sleeves；19 dust rings；20 input push rod anti-shedding mechanisms；21 rectangular seals；22 guide pads；23O types seal
Enclose I；24O type sealing rings II；25O type sealing rings III；26O type sealing rings IV；27 piston return springs；28 pistons；29 rubber bullets
Spring；30 piston guide sets；31O type sealing rings V；32 holes back-up ring I；33 valves；34 valve return springs；35O type sealing rings VI；
36 holes back-up ring II；37O type sealing rings VII；38 valve sleeves；39 vulcanization back-up rings；40 internal circlips, the cavitys of A first；B
Two cavitys；The cavitys of C the 3rd；The cavitys of D the 4th；The cavitys of E the 5th.
Embodiment
The embodiment that the invention will now be described in detail with reference to the accompanying drawings.
A kind of air booster assembly applied to brake fluid system, as shown in Figure 1, 2, 3, including input push rod 1, enter
Gas seat 2, piston cylinder 4, valve body 5, procapsid 6, boosting piston 11, back casing 12, reinforcing plate 13, output push rod 15, boosting piston
Return spring 16, input push rod anti-shedding mechanism 20, piston return spring 27, piston 28, rubber spring 29, valve 33, valve
Return spring 34 and valve sleeve 38, wherein procapsid 6 form cavity after being fixedly connected with back casing 12, boosting piston 11 is arranged on
The cavity formed after procapsid 6 is fixedly connected with back casing 12 after on back casing 12 is separated into the first cavity A and the second cavity
B, and boosting piston sealing ring 9 and boosting piston guide sleeve 10 are housed in boosting piston 11 and the contact site of back casing 12；Strengthen
Plate 13 is fixed on the rearmost end of back casing 12, and exhaust outlet 14 is offered on back casing 12；Boosting piston in the second described cavity B
Boosting piston return spring 16 is provided between 11 and reinforcing plate 13, wherein output push rod 15 is arranged on boosting piston return spring
It is connected in 16 and with boosting piston 11；
Input push rod anti-shedding mechanism 20 is made up of vulcanization back-up ring 39 and circlip for hole 40, and input push rod 1 passes through sulphur
It is fixed on after changing the boss that back-up ring 39 is snapped on input power push rod 1 by circlip for hole 40 in air inlet seat 2, that is, inputs push rod 1
It is connected by inputting push rod anti-shedding mechanism 20 with air inlet seat 2, while inputs push rod 1 and stretch into the part of air inlet seat 2 and guide pad
22 are in contact；
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4 and Fig. 5, air inlet seat 2 is extend into valve body 5, passes through the second valve in air inlet seat 2
Body screw thread 202 is screwed with the air inlet seat screw thread 51 on valve body 5 and is connected, and valve body 5 is beloid cylinder, air inlet seat 2 with
Valve body 5 forms cavity in the wide one end of valve body 5 after being fixedly connected, and is provided with rectangle in air inlet seat 2 and the contact site of valve body 5
Sealing ring 21 and O-ring seal I23；Valve body 5 passes through the first valve body spiral shell on second piston cylinder screw thread 52 thereon and piston cylinder 4
Line 43 is screwed connection, and O-ring seal IV26 and O-ring seal V31 is housed in contact site, and piston cylinder 4 stretches into fore shell
Body 6 is interior and passes through boosting piston screw thread 42 thereon and the screw thread of first piston cylinder screw thread 111 of the central hole of boosting piston 11
It is fixedly connected and is sealed, piston cylinder 4 is provided with piston cylinder sealing ring 17, piston cylinder guide sleeve with the contact site of procapsid 6
18 and dust ring 19, because piston cylinder 4 is stretched into procapsid 6, so the narrow one end of the valve body 5 being fixed in piston cylinder 4 is also inserted
Enter into the centre bore of the boosting piston 11 in the first cavity A and form the 5th cavity E, valve body 5 and the contact surface of boosting piston 11
It is provided with O-ring seal III25；
In the cavity that air inlet seat 2 and valve body 5 are formed built with piston 28, piston return is provided between piston 28 and valve body 5
Spring 27, is made up of piston 28 and valve body 5 and the cavity at the position of piston return spring 27 is the 4th cavity D, living
Plug one end of return spring 27 contacts with valve body 5, and the other end contacts with piston 28 and piston 28 is squeezed in air inlet seat 2；Piston 28
Be also equipped with O-ring seal I23 and piston guide set 30 between valve body 5, rubber spring 29 be arranged on piston 28 and air inlet seat 2 it
Between, the one end of guide pad 22 is stretched into air inlet seat 2 and inserted in the endoporus of rubber spring 29, the other end and air inlet seat of guide pad 22
2 contact and hole back-up ring I32 are provided with contact site, and the internal openings of guide pad 22 can simultaneously rise and lead in the internal slide of air inlet seat 2
To effect, its internal openings be used for exclude rubber spring 29 deform when between piston 28 and rubber spring 29 caused high pressure gas
Body；
The narrow one end of valve body 5 is internally provided with valve sleeve 38, and O-ring seal VI35 is housed between valve sleeve 38 and valve body 5
With hole back-up ring II36, valve 33 is housed on the endoporus of valve sleeve 38, valve 33 is squeezed in valve body 5 by valve return spring 34
On, and O-ring seal VII37 is provided between valve sleeve 38 and valve 33, be made up of valve body 5, valve 33 and valve sleeve 38 and
Cavity at the position of valve return spring 34 is the 3rd cavity C.
As shown in fig. 6, inner groove 41, passage e are provided with described piston cylinder 4, for what is be connected with boosting piston 11
Boosting piston screw thread 42 and the first valve body screw thread 43 for being connected with valve body 5.
As shown in fig. 7, be provided with described boosting piston 11 three first passage d, three second channel g and with work
The first piston cylinder screw thread 111 that plug tube 4 connects；
As shown in figure 4, air inlet 201, air inlet seat passage a are provided with described air inlet seat 2 and is connected with valve body 5
Second valve body screw thread 202, the air inlet seat passage a ends of air inlet seat 2 are by the plug for seal of steel ball 3.
As shown in figure 5, three the first valve channel b are distributed with the described excircle of valve body 5,5 wide portion of valve body and narrow portion are handed over
Three the second valve channel f are distributed with the outside of the place of connecing, three the 3rd valve bodies, which are distributed with, on the inside of 5 wide portion of valve body and narrow portion junction leads to
Road c, the second piston cylinder screw thread for being additionally provided with the air inlet seat screw thread 51 being connected with air inlet seat 2 and being connected with piston cylinder 4 on valve body 5
52。
The course of work of the present invention is as follows：
The air booster assembly of the present invention is in non-on-position：Pressure-air by the air inlet 21 in air inlet seat 2,
Air inlet seat passage a and three the first valve channel b of the excircle of valve body 5 distribution enter the 3rd cavity C, due to valve return
Spring 34 pushes against valve 33 on valve body 5, and valve 33 is closed, and enters the first cavity A so as to completely cut off pressure-air,
Now the first cavity A, the second cavity B are atmospheric pressure.
The air booster assembly of the present invention is in on-position：Pedal force is delivered to input push rod 1, passes through guide pad
22nd, rubber spring 29 transmits the force to piston 28, and piston return spring 27 is compressed, input push rod 1, guide pad 22, rubber bullet
Spring 29, piston 28 together move forward, and piston 28 departs from air inlet seat 2 and moves forward to valve 33, and now valve 33 will be opened, i.e. piston 28
Just contacted with valve 33, equilbrium position when being air booster boosting herein, with the increase of pedal force, piston 28 compresses
Valve 33 cause by the first cavity A to the 5th cavity E exhaust passage closing, while by valve 33 and valve body 5 separately cause by
3rd cavity C to the first cavity A inlet channel is opened, and pressure-air enters the 4th cavity through valve body 5 and the gap of valve 33
D, three the second valve channel f that the 4th cavity D inner high voltages gas is distributed by the end of valve body 5, three of boosting piston 11
Inner groove 41 and passage e on one passage d, piston cylinder 4 enter the first cavity A and produce servo force；4th cavity D inner high voltages simultaneously
Gas acts on piston 28, piston 28 overcomes the power of rubber spring 29 to be moved to the direction of air inlet seat 2, until the both sides of piston 28
Untill power reaches balance, now valve 33 contacts simultaneously with valve body 5, piston 28, the air inlet by the 3rd cavity C to the first cavity A
Passage and simultaneously closed off by the first cavity A to the 5th cavity E exhaust passage, reach power-assisted balance.Because power-assisted is balanced by rubber
Glue spring 29 and piston 28 are realized so that servo force with the gradual increase of the input input power of push rod 1 into fixed proportion growth,
So that with good trackability and manipulate sense during braking.When reaching maximal servo power, continue to increase input power, piston 28
It is pressed against on valve body 5, the transmission of pedal force is applied to valve body 5 by piston 28, because valve body 5 and piston cylinder 4, boosting piston 11 are adopted
It is fixed as one with threaded connection, exports push rod 15 and be fixed on boosting piston 11, the input power and power output of air booster
Equivalent is increased.
The air booster assembly of the present invention is when cancelling braking：With reduction input push rod 1, the guide pad of input power
22nd, moved after rubber spring 29, piston 28, when reaching Max point of booster force, valve 33 contacts simultaneously with valve body 5, piston 28, by
Three cavity C to the first cavity A inlet channel and simultaneously closed off by the first cavity A to the 5th cavity E exhaust passage, with defeated
Enter power to continue to reduce, valve 33 compresses with valve body 5 to be departed from piston 28 simultaneously, now by the first cavity A to the 5th cavity E's
Exhaust passage is opened, and is closed by the 3rd cavity C to the first cavity A inlet channel road, the first cavity A inner high voltage air is through piston
Three the second valve bodies being distributed on passage e and inner groove 41, three first passage d of boosting piston 11, valve body 5 on cylinder 4 lead to
Road f enters the 4th cavity D, then reaches the 5th cavity E by gap, the centre bore of valve 33 between piston 28 and valve 33, passes through
Second channel g on boosting piston 11 is flowed into the second cavity B and is discharged into air, and the first cavity A pressure will decline, servo force
Reduce, like this being gradually reduced with input power, servo force also by into the reduction of fixed proportion, fully phases out until braking.
Claims (5)
1. a kind of air booster assembly applied to brake fluid system, it is characterised in that including input push rod (1), air inlet seat
(2), piston cylinder (4), valve body (5), procapsid (6), boosting piston (11), back casing (12), reinforcing plate (13), output push rod
(15), boosting piston return spring (16), input push rod anti-shedding mechanism (20), piston return spring (27), piston (28), rubber
Glue spring (29), valve (33), valve return spring (34) and valve sleeve (38), wherein procapsid (6) and back casing (12) are solid
Cavity is formed after fixed connection, boosting piston (11) is arranged on back casing (12), by procapsid (6) and the fixed company of back casing (12)
The cavity formed after connecing is separated into the first cavity (A) and the second cavity (B), and is contacted in boosting piston (11) with back casing (12)
Position is equipped with boosting piston sealing ring (9) and boosting piston guide sleeve (10)；Reinforcing plate (13) is fixed on back casing (12) most
Rear end, exhaust outlet (14) is offered on back casing (12)；Described the second cavity (B) interior boosting piston (11) and reinforcing plate (13)
Between be provided with boosting piston return spring (16), wherein output push rod (15) is arranged in boosting piston return spring (16) simultaneously
It is connected with boosting piston (11)；
Input push rod anti-shedding mechanism (20) is made up of vulcanization back-up ring (39) and circlip for hole (40), and input push rod (1) is logical
It is fixed on after the boss that over cure back-up ring (39) is snapped on input power push rod (1) by circlip for hole (40) in air inlet seat (2),
Input push rod (1) by inputting push rod anti-shedding mechanism (20) with air inlet seat (2) to be connected, while input push rod (1) and stretch into
Air inlet seat (2) is partly in contact with guide pad (22)；
Air inlet seat (2) extend into be threadably secured with valve body (5) in valve body (5) and is connected, and valve body (5) is beloid cylinder
Body, air inlet seat (2) form cavity after being fixedly connected with valve body (5) in the wide one end of valve body (5), and in air inlet seat (2) and valve
Body (5) contact site is provided with rectangular seal (21), O-ring seal I (23)；Valve body (5), which is threadably secured, is connected to work
In plug tube (4), and O-ring seal IV (26) and O-ring seal V (31) is housed in contact site, piston cylinder (4) stretches into procapsid
(6) it is threadably secured in the centre bore of boosting piston (11) and is connected and is sealed, piston cylinder (4) connects with procapsid (6)
Contact portion position is provided with piston cylinder sealing ring (17), piston cylinder guide sleeve (18) and dust ring (19), before being stretched into due to piston cylinder (4)
In housing (6), so the power-assisted that the narrow one end of the valve body (5) being fixed in piston cylinder (4) is also inserted into the first cavity (A) is lived
Fill in the centre bore of (11) and form the 5th cavity (E), valve body (5) is equipped with O-ring seal III with boosting piston (11) contact surface
(25)；
In the cavity that air inlet seat (2) and valve body (5) are formed built with piston (28), it is provided with and lives between piston (28) and valve body (5)
Return spring (27) is filled in, is made up of piston (28) and valve body (5) and the cavity at piston return spring (27) position
For the 4th cavity (D), piston return spring (27) one end is contacted with valve body (5), and the other end is contacted piston with piston (28)
(28) it is squeezed in air inlet seat (2)；O-ring seal I (23) and piston guide set are also equipped between piston (28) and valve body (5)
(30), rubber spring (29) is arranged between piston (28) and air inlet seat (2), and guide pad (22) one end is stretched into air inlet seat (2)
And insert in the endoporus of rubber spring (29), the other end of guide pad (22) is contacted with air inlet seat (2) and set in contact site
There is hole back-up ring I (32), guide pad (22) internal openings can simultaneously play the guiding role in air inlet seat (2) internal slide, open inside it
Hole be used for exclude rubber spring (29) deformation when between piston (28) and rubber spring (29) caused gases at high pressure；
The narrow one end of valve body 5 is internally provided with valve sleeve (38), and O-ring seal VI is housed between valve sleeve (38) and valve body (5)
(35) and hole is with back-up ring II (36), valve (33) is housed on valve sleeve (38) endoporus, valve (33) passes through valve return spring
(34) be squeezed on valve body (5), and O-ring seal VII (37) be provided between valve sleeve (38) and valve (33), by valve body (5),
Valve (33) and valve sleeve (38) form and the cavity at valve return spring (34) position is the 3rd cavity (C).
2. a kind of air booster assembly applied to brake fluid system as claimed in claim 1, it is characterised in that described
Piston cylinder (4) on be provided with inner groove (41), passage (e), the boosting piston screw thread for being connected with boosting piston (11)
And the first valve body screw thread (43) for being connected with valve body (5) (42).
3. a kind of air booster assembly applied to brake fluid system as claimed in claim 2, it is characterised in that described
Boosting piston (11) on be provided with three first passages (d), three second channels (g) and be connected with piston cylinder (4)
One piston cylinder screw thread (111).
4. a kind of air booster assembly applied to brake fluid system as claimed in claim 3, it is characterised in that described
Air inlet seat (2) on be provided with air inlet (201), air inlet seat passage (a) and the second valve body screw thread being connected with valve body (5)
(202), air inlet seat (2) air inlet seat passage (a) end is by steel ball (3) plug for seal.
5. a kind of air booster assembly applied to brake fluid system as claimed in claim 4, it is characterised in that described
Valve body (5) excircle be distributed with three the first valve channels (b), be distributed with three on the outside of the wide portion of valve body (5) and narrow portion junction
Three the 3rd valve channels (c), valve body is distributed with the inside of individual second valve channel (f), the wide portion of valve body (5) and narrow portion junction
(5) the air inlet seat screw thread (51) being connected with air inlet seat (2) and the second piston cylinder screw thread being connected with piston cylinder (4) are additionally provided with
(52)。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711142498.5A CN107813808A (en) | 2017-11-17 | 2017-11-17 | A kind of air booster assembly applied to brake fluid system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711142498.5A CN107813808A (en) | 2017-11-17 | 2017-11-17 | A kind of air booster assembly applied to brake fluid system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107813808A true CN107813808A (en) | 2018-03-20 |
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ID=61609965
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711142498.5A Pending CN107813808A (en) | 2017-11-17 | 2017-11-17 | A kind of air booster assembly applied to brake fluid system |
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| Country | Link |
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| CN (1) | CN107813808A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111873968A (en) * | 2020-07-31 | 2020-11-03 | 中车青岛四方车辆研究所有限公司 | Hydraulic braking power device, hydraulic braking system and rail train |
| CN111976690A (en) * | 2020-08-24 | 2020-11-24 | 一汽解放汽车有限公司 | Air booster control valve assembly and air booster |
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| KR20090050254A (en) * | 2007-11-15 | 2009-05-20 | 한국델파이주식회사 | Panic assist booster for a vehicle |
| CN202728211U (en) * | 2012-07-30 | 2013-02-13 | 温岭市奥达机械有限公司 | Vacuum booster |
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| CN207579852U (en) * | 2017-11-17 | 2018-07-06 | 中国第一汽车股份有限公司 | A kind of air booster assembly applied to brake fluid system |
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| JPS6237262A (en) * | 1985-08-13 | 1987-02-18 | Jidosha Kiki Co Ltd | Pressure control method for booster and device therefor |
| KR20090050254A (en) * | 2007-11-15 | 2009-05-20 | 한국델파이주식회사 | Panic assist booster for a vehicle |
| CN202728211U (en) * | 2012-07-30 | 2013-02-13 | 温岭市奥达机械有限公司 | Vacuum booster |
| CN105752064A (en) * | 2016-02-29 | 2016-07-13 | 北京长城华冠汽车科技股份有限公司 | Automobile hydraulic braking system |
| CN207579852U (en) * | 2017-11-17 | 2018-07-06 | 中国第一汽车股份有限公司 | A kind of air booster assembly applied to brake fluid system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111873968A (en) * | 2020-07-31 | 2020-11-03 | 中车青岛四方车辆研究所有限公司 | Hydraulic braking power device, hydraulic braking system and rail train |
| CN111976690A (en) * | 2020-08-24 | 2020-11-24 | 一汽解放汽车有限公司 | Air booster control valve assembly and air booster |
| CN111976690B (en) * | 2020-08-24 | 2022-04-05 | 一汽解放汽车有限公司 | Air booster control valve assembly and air booster |
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