CN201907499U - Emergency brake for vacuum booster - Google Patents
Emergency brake for vacuum booster Download PDFInfo
- Publication number
- CN201907499U CN201907499U CN2010206885307U CN201020688530U CN201907499U CN 201907499 U CN201907499 U CN 201907499U CN 2010206885307 U CN2010206885307 U CN 2010206885307U CN 201020688530 U CN201020688530 U CN 201020688530U CN 201907499 U CN201907499 U CN 201907499U
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- Prior art keywords
- valve
- guiding
- guiding valve
- hook
- valve body
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- Expired - Lifetime
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Abstract
The utility model relates to an emergency brake for a vacuum booster, which mainly solves the problems that the existing vacuum booster can not obtain stronger brake force in a short time, and vehicles can not obtain the maximum braking deceleration, more sensitive braking and shorter braking distance. The emergency brake is characterized in that a slide valve (5) is sheathed outside an air valve seat (8), a slide valve reset spring (6) is arranged between the slide valve (5) and a valve body (1), a front cavity passage (19) communicated with a front cavity (17) is arranged on the valve body (1), a back cavity passage (20) communicated with a back cavity (18) is arranged on the slide valve (5), a lock sheet (4) for limiting the position of the slide valve (5) penetrating through and is inserted on the slide valve (5), and a slide valve hook (2) is arranged on the valve body (1). When the emergency brake for the vacuum booster is in the emergency brake state, the vehicles can obtain the maximum braking deceleration, and the emergency brake for the vacuum booster has the characteristics of fast emergency braking, high emergency braking sensitivity and short braking distance.
Description
Technical field
The utility model relates to a kind of vacuum booster that is used for automobile brake system, is specifically related to a kind of vacuum booster emergency braking apparatus.
Background technology
Vacuum booster is a kind of vacuum-assisted actuating device, and brake equipment normal and automobile is used, and makes chaufeur laborsaving when touching on the brake.The vacuum booster that uses mainly is made up of forward and backward housing assembly, power-assisted dish diaphragm band control valve assembly at present, forward and backward housing assembly snaps together and forms a fully enclosed cavity, diaphragm arrangement is divided into two parts in inside cavity with cavity, be ante-chamber and back cavity, wherein ante-chamber advances divergent tracheae with driving engine or aux. vacuum pump is connected, and back cavity communicates with atmosphere.Be connected with the valve body that a control air enters on the rear housing, in described valve body, control valve assembly is housed, rubber valve is arranged, control valve spring, the valve rod pull back spring, valve rod and air valve seat etc., the valve rod front end is spheroidal and is inserted in the air valve seat, air valve seat end face is provided with rubber valve and contacts and energy leak free atmos-valve (edge potted line), when touching on the brake, valve rod promotes the air valve seat and moves, the air valve seat breaks away from rubber valve, air enters into back cavity by the valve body outside through rubber valve, because launched machine air inlet fork tracheae or aux. vacuum pump are evacuated in the ante-chamber, produce pressure reduction between ante-chamber and the back cavity, under differential pressure action, diaphragm moves to ante-chamber by the moving master cylinder push rod of power-assisted dribbling, has reached the power-assisted purpose of brake to the greatest extent.When emergency braking, owing to can not form bigger distance between air valve seat and the rubber valve, limited the inlet of air, can not obtain bigger braking force at short notice, vehicle can not obtain maximum braking deceleration and reach more sensitive braking and shorter stopping distance, influences traffic safety.
The utility model content
Can not obtain bigger braking force at short notice in order to overcome existing vacuum booster, vehicle can not obtain the deficiency of maximum braking deceleration and more sensitive braking and shorter stopping distance, the utility model provides a kind of vacuum booster emergency braking apparatus, this vacuum booster emergency braking apparatus is when emergency braking condition, can make vehicle obtain maximum braking deceleration, have the advantages that emergency braking is quick, emergency sensitiveness is high and stopping distance is short.
The technical solution of the utility model is: the newly-increased emergency braking apparatus of this vacuum booster comprises valve body, rubber valve is housed in the valve body, control valve spring, the valve rod pull back spring, valve rod and air valve seat, valve rod and air valve seat riveted, both are free-running fit, one end of air valve seat is provided with rubber valve and contacts and energy leak free atmos-valve, air valve seat overcoat has guiding valve, the outer wall of air valve seat is provided with groove, bearing fit between guiding valve and the valve body, be provided with the guiding valve pull back spring between guiding valve and the valve body, valve body is provided with the ante-chamber passage that communicates with ante-chamber, the access port place I of corresponding formation vacuum valve with rubber valve of valve inner, guiding valve is provided with the back cavity passage that communicates with back cavity, and the contact jaw of guiding valve and rubber valve forms the vacuum valve II, is interspersed with on the guiding valve and makes its spacing locking plate at valve body one end, valve body is provided with guiding valve hook guide groove, being equipped with in the guide groove can be along the guiding valve hook of guide groove slip, and the guiding valve hook is with guiding valve uncinate gyrus position spring outward, and the guiding valve hook can be hooked in guiding valve; The contact surface of guiding valve hook and air valve seat and guiding valve is the inclined-plane.
Be provided with seal ring between described guiding valve and the valve body.
Described guiding valve hook is 2 and is symmetrically distributed.
The utlity model has following beneficial effect: when brakeless, normal braking, guiding valve is under the effect of guiding valve pull back spring, and with guiding valve hook hook, servo-unit is as conventional servo-unit.
When normal braking, valve rod promotes choker relief valve, does not back down the guiding valve hook during work, that is: guiding valve hook and guiding valve do not break away from.Glancing impact atmosphere inlet is controlled by valve rod travel, the reach of air valve seat, and first rubber valve contacts with valve body vacuum valve port, closes vacuum valve; Along with choker relief valve continues reach, atmosphere valve port between choker relief valve and rubber valve is opened, atmosphere enters atmosphere chamber, atmosphere that enters and ante-chamber vacuum pressure difference during greater than pull back spring and servo-unit reach frictional resistance power diaphragm power-assisted dribbling moving valve move ahead, the atmosphere valve port reduces to close until bivalve (vacuum valve port, atmosphere valve port) gradually, simultaneously, servo-unit promotes master cylinder and sets up hydraulic pressure.The servo-actuated of whole braking procedure valve body is in choker relief valve.
When running into emergency situation, during sudden stop, valve rod is (〉=100mm/s) propelling fast, the air valve seat pushes the guiding valve hook makes it outwards open along valve body guiding valve hook radially-directed groove, and guiding valve hook and guiding valve are thrown off, and guiding valve is under the effect of guiding valve pull back spring, press to rubber valve, form new vacuum valve port, this moment, the vacuum valve port was closed, and the atmosphere valve port is opened.Entering under the effect of servo-unit back cavity little air, the diaphragm control valve assembly travels forward, and simultaneously, guiding valve pushes back rubber valve under the effect of guiding valve pull back spring, till end in contact behind guiding valve and locking plate and the valve body groove, this moment, guiding valve made that moment reaches maximum open amount between rubber valve and the air valve seat.Servo-unit moment is obtained the big many take-off values of more conventional servo-unit, obtains higher initial braking force, makes vehicle obtain maximum braking deceleration, obtains more conventional servo-unit and brakes more rapidly.
Finish at emergency braking, locking plate contact earlier (guiding valve contacts with locking plate at this moment) under the slide valve spring effect with rear housing, valve body is with the guiding valve hook mobile backward under return bullet action of the spring afterwards, the guiding valve inclined-plane push open the guiding valve hook make its hang into, the guiding valve hook is returned to initial position, and servo-unit returns to normal.Have the advantages that emergency braking is quick, emergency sensitiveness is high and stopping distance is short.
Description of drawings
Accompanying drawing 1 is a structure cutaway view of the present utility model.
Accompanying drawing 2 is A-A cutaway views among Fig. 1.
Accompanying drawing 3 is structure cutaway views of valve body 1 among Fig. 1.
Accompanying drawing 4 is structural representations of locking plate 4 among Fig. 1.
Accompanying drawing 5 is running condition figure of the present utility model.
1-valve body among the figure, 2-guiding valve hook, 3-guiding valve hook spring, 4-locking plate, the 5-guiding valve, 6-guiding valve pull back spring, 7-guiding valve leather cup, 8-air valve seat, the 9-valve rod, 10-rubber valve, 11-control valve spring, 12-valve rod pull back spring, 13-valve rod pull back spring seat, 14-vacuum valve I, 15-vacuum valve II, the 16-atmos-valve, 17-ante-chamber, 18-back cavity, 19-ante-chamber passage, 20-back cavity passage, 21-guide groove.
The specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
By Fig. 1 in conjunction with Fig. 2, Fig. 3, Fig. 4, shown in Figure 5, a kind of vacuum booster emergency braking apparatus, comprise valve body 1, rubber valve 10 is housed in the valve body 1, control valve spring 11, valve rod pull back spring 12, valve rod 9 and air valve seat 8, valve rod 9 and air valve seat 8 riveteds, both are free-running fit, one end of air valve seat 8 is provided with rubber valve 10 and contacts and energy leak free atmos-valve 16, the air valve seat 8 outer guiding valves 5 that are with, the outer wall of air valve seat 8 is provided with groove, bearing fit between guiding valve 5 and the valve body 1, be provided with guiding valve pull back spring 6 between guiding valve 5 and the valve body 1, valve body 1 is provided with the ante-chamber passage 19 that communicates with ante-chamber 17, valve body 1 in-to-in access port place and rubber valve 10 corresponding formation vacuum valve I (14), guiding valve 5 is provided with the back cavity passage 20 that communicates with back cavity 18, guiding valve 5 forms vacuum valve II (15) with the contact jaw of rubber valve 10, be interspersed with on the guiding valve 5 and make its spacing locking plate 4 at valve body 1 one ends, valve body 1 is provided with guiding valve hook guide groove 21, being equipped with in the guide groove 21 can be along the guiding valve hook 2 of guide groove (21) slip, be with guiding valve uncinate gyrus position spring 6 outside the guiding valve hook 2, guiding valve hook 2 can be hooked in guiding valve 5; Guiding valve hook 2 is the inclined-plane with the contact surface of air valve seat 8 and guiding valve 5.Under normal circumstances, when just not touching on the brake, guiding valve hook 2 is in ante-chamber under the action of reset spring, near guiding valve 5, this moment guiding valve hook 2 with guiding valve 5 hook mutually, when normal braking, the acceleration/accel of valve rod 9 is less, in its stroke, guiding valve hook 2 is not backed down, guiding valve hook 2 does not break away from guiding valve 5, form certain space but break away between air valve seat 8 and the rubber valve 10, promptly big empty valve port is opened, and vacuum valve I (14) is closed in rubber valve 10 shutoff simultaneously, outside air is by through atmospheric valve 16, guiding valve 5, back cavity passage 20 enters in the back cavity 18, diaphragm moves to ante-chamber 17 under differential pressure action, and guiding valve hook 2 affects guiding valve 5 also to move to ante-chamber 17 with valve body 1, and this process is identical with existing vacuum servo dish working process; When running into emergency situation, during sudden stop, valve rod 6 advances fast, air valve seat 8 overcomes guiding valve hook spring 3 application forces and outwards backs down guiding valve hook 2, guiding valve 5 breaks away from guiding valve hook 2 under 6 effects of guiding valve pull back spring, be pressed in back dead point on the valve body 1 with locking plate 4, vacuum valve II (15) on the guiding valve 5 is adjacent to and rubber valve 3 is pushed back with rubber valve 3 simultaneously, this moment, guiding valve 5 made 16 moments of atmos-valve between rubber valve 10 and the air valve seat 8 reach maximum open amount, make valve body 1 obtain rapidly to ante-chamber 17 move than high thrust, thereby can access higher initial braking force, make vehicle obtain maximum braking deceleration, obtain more conventional servo-unit and brake more rapidly.Finish at emergency braking, valve rod 9 moves backward, promote guiding valve hook 2 when air valve seat 8 resets and be returned to initial position, when locking plate 4 with after rear housing contacts, guiding valve 5 stop motions, and under the effect of servo-unit pull back spring, valve body 1 drives and moves after guiding valve hook 2 continues, guiding valve hook 2 outwards opens again and guiding valve 5 hook mutually, and servo-unit returns to normal.The utility model is compared with background technology, has the advantages that emergency braking is quick, emergency sensitiveness is high and stopping distance is short.
In conjunction with shown in Figure 2, be provided with guiding valve leather cup 7 between described guiding valve 5 and the valve body 1 by Fig. 1.When emergency brake, guiding valve leather cup 7 can avoid air to enter ante-chamber passage 19 in the valve body 1 by guiding valve 5 inner chambers.
By shown in Figure 1, described guiding valve hook 2 is 2 and is symmetrically distributed, and is simple in structure.
Claims (3)
1. vacuum booster emergency braking apparatus, comprise valve body (1), rubber valve (10) is housed in the valve body (1), control valve spring (11), valve rod pull back spring (12), valve rod (9) and air valve seat (8), valve rod (9) and air valve seat (8) riveted, both are free-running fit, one end of air valve seat (8) is provided with rubber valve (10) and contacts and energy leak free atmos-valve, it is characterized in that: the outer guiding valve (5) that is with of air valve seat (8), the outer wall of air valve seat (8) is provided with groove, bearing fit between guiding valve (5) and the valve body (1), be provided with guiding valve pull back spring (6) between guiding valve (5) and the valve body (1), valve body (1) is provided with the ante-chamber passage (19) that communicates with ante-chamber (17), valve body (1) in-to-in access port place and rubber valve (10) corresponding formation vacuum valve I (14), guiding valve (5) is provided with the back cavity passage (20) that communicates with back cavity (18), guiding valve (5) forms vacuum valve II (15) with the contact jaw of rubber valve (10), be interspersed with on the guiding valve (5) and make its spacing locking plate (4) at valve body (1) one end, valve body (1) is provided with guiding valve hook guide groove (21), being equipped with in the guide groove (21) can be along the guiding valve hook (2) of guide groove (21) slip, guiding valve hook (2) is outer to be with guiding valve uncinate gyrus position spring (6), and guiding valve hook (2) can be hooked in guiding valve (5); Guiding valve hook (2) is the inclined-plane with the contact surface of air valve seat (8) and guiding valve (5).
2. vacuum booster emergency braking apparatus according to claim 1 is characterized in that: be provided with seal ring between described guiding valve (5) and the valve body (1).
3. vacuum booster emergency braking apparatus according to claim 1 and 2 is characterized in that: described guiding valve hook (2) is 2 and is symmetrically distributed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206885307U CN201907499U (en) | 2010-12-29 | 2010-12-29 | Emergency brake for vacuum booster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206885307U CN201907499U (en) | 2010-12-29 | 2010-12-29 | Emergency brake for vacuum booster |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201907499U true CN201907499U (en) | 2011-07-27 |
Family
ID=44299708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206885307U Expired - Lifetime CN201907499U (en) | 2010-12-29 | 2010-12-29 | Emergency brake for vacuum booster |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201907499U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102050101A (en) * | 2010-12-29 | 2011-05-11 | 温州市东启汽车零部件制造有限公司 | Emergency braking device of vacuum booster |
| CN105711572A (en) * | 2016-01-28 | 2016-06-29 | 吉林东光奥威汽车制动系统有限公司 | Dual-atmospheric valve port mechanical driving mechanism of vacuum booster |
-
2010
- 2010-12-29 CN CN2010206885307U patent/CN201907499U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102050101A (en) * | 2010-12-29 | 2011-05-11 | 温州市东启汽车零部件制造有限公司 | Emergency braking device of vacuum booster |
| CN105711572A (en) * | 2016-01-28 | 2016-06-29 | 吉林东光奥威汽车制动系统有限公司 | Dual-atmospheric valve port mechanical driving mechanism of vacuum booster |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110727 |