CN102874243A - Automobile vacuum-brake assisting device - Google Patents
Automobile vacuum-brake assisting device Download PDFInfo
- Publication number
- CN102874243A CN102874243A CN2012103573909A CN201210357390A CN102874243A CN 102874243 A CN102874243 A CN 102874243A CN 2012103573909 A CN2012103573909 A CN 2012103573909A CN 201210357390 A CN201210357390 A CN 201210357390A CN 102874243 A CN102874243 A CN 102874243A
- Authority
- CN
- China
- Prior art keywords
- vacuum
- automobile
- interface
- fixed
- switch
- 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.)
- Granted
Links
Images
Landscapes
- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
The invention relates to an automobile brake device, in particular to an automobile vacuum-brake assisting device. The automobile vacuum-brake assisting device comprises an engine work induction switch, a vacuum pump, a brake lamp switch, a storage battery and an electromagnetic switch, and successfully solves the problem that braking can not be effectively achieved after an automobile adopting an oil braking system shuts down suddenly. According to the invention, a vacuum-brake assisting device is additionally arranged on the conventional automobile adopting the oil braking system, so that after an engine suddenly shuts down, pressure difference exists in the housing of a brake booster when the driver tramples the brake pedal, and then the driver can cushily brake the automobile by virtue of the pressure difference. Therefore, the probability of safety accidents caused after sudden flameouts of the automobile is greatly lowered, and the automobile vacuum-brake assisting device is ingenious in structure and small in size, and can not occupy too large space when being mounted in the automobile, thereby being worthy of popularization.
Description
Technical field
The present invention relates to automobile braking device, be specially a kind of vacuum automobile auxiliary device of stopping.
Background technology
The brake system of the lilliput car such as car and wagon generally is to adopt the oil system of stopping, the oil system of stopping comprises brake booster, brake booster is connected air inlet pipe by the pipeline which is provided with vacuum check valve and is connected with driving engine, adopting the stop automobile of system of oil is to have utilized in the vehicle traveling process difference of pressure in the air-breathing brake booster housing that causes of engine operation to brake, in case so died in the vehicle traveling process, after the engine stop work, just there has not been difference of pressure in the housing of vacuum booster, the driver wants to stop, need to exert great efforts and step on brake pedal, and usually be that the driver spends very large strength to step on brake pedal, automobile is not but by effective brake, particularly automobile if can not in time stop, probably causes safety misadventure behind the climb very steep slopes died, although braking vehicle can adopt parking brake when emergency situation, but parking brake is braking vehicle fully, has just reduced the speed of automobile, also easily causes safety misadventure.
Summary of the invention
The present invention for solve adopt oil stop in the vehicle traveling process of system behind the died can not effective brake problem, a kind of vacuum automobile auxiliary device of stopping is provided.
The present invention adopts following technical scheme to realize: the vacuum automobile auxiliary device of stopping, comprise the engine operation inductive switch, vacuum pump with bleed interface and the interface of giving vent to anger, the braking signal switch that disposes on the automobile, storage battery, electromagnetic switch, wherein the engine operation inductive switch comprises the housing that is connected to form by top shell and drain pan, have eyelet on the top shell, the top end opening of top shell and the opening part formation socket that stretches out is fixed with the socket axle that has through hole in the socket, be fixed with binding post in the through hole of socket axle, drain pan is provided with vacuum interface, the sealing of the junction of top shell and drain pan is fixed with the leather cup that top shell and drain pan are separated in the housing, and the sealing of leather cup midway location is fixed with switch column, and an end of switch column contacts with binding post, the other end is fixed with spring, and the other end of spring is fixed on the bottom of drain pan; Switch column in the engine operation inductive switch is connected positive pole by the eyelet on the top shell and is connected with storage battery, binding post in the engine operation inductive switch is connected the contact and is connected with braking signal switch, be connected coil and connect in another contact of braking signal switch with electromagnetic switch, one binding post of electromagnetic switch connects the positive pole of storage battery, another binding post of electromagnetic switch connects the positive terminal of motor on the vacuum pump, and the negative pole of storage battery connects the negative terminal of motor on the vacuum pump.
When vacuum automobile is stopped auxiliary device work, vacuum interface on the engine operation inductive switch drain pan is connected on the pipeline between engine inlet port and the brake booster (three-way pipe is between vacuum check valve and engine inlet port) by three-way pipe, the interface of bleeding on the vacuum pump is connected on the pipeline between engine inlet port and the brake booster (position of three-way pipe between vacuum check valve and brake booster, and on three-way pipe and the pipeline between the interface of bleeding vacuum check valve being arranged) by three-way pipe; Air-breathing during engine work, be low pressure in the brake booster housing then, be low pressure in the engine operation inductive switch drain pan, be normal pressure in the top shell, leather cup is because the difference of pressure between top shell and the drain pan is crooked in the drain pan, the switch column that is fixed on simultaneously on the leather cup moves down along with the bending of leather cup, spring is also compressed, then switch column separates with the binding post that is fixed on the socket axle, this moment, the engine operation inductive switch was off-state, electromagnetic switch also is in off-state, the vacuum air pump inoperative.Behind the engine off, be normal pressure in the engine operation inductive switch drain pan, there is not difference of pressure between top shell and the drain pan, compressed spring in the drain pan recovers, switch column contacts with binding post, this moment, the engine operation inductive switch was coupled condition, and when automobile need to be braked, driver's pin was stepped on brake pedal, braking signal switch is connected, the coil of electromagnetic switch gets electric, and electromagnetic switch is closed, and the motor on the vacuum pump gets electric, vacuum pump work is bled, vacuum pump will with the brake booster of its connection in air take away, is low pressure in the brake booster housing then, the driver is light braking vehicle just.
The above-mentioned vacuum automobile auxiliary device of stopping, top shell and drain pan are provided with flange, leather cup is clipped between the flange on top shell and the drain pan, top shell is connected flange with drain pan and is connected, the such good sealing effect that plays of leather cup, assurance automobile in the process of moving engine operation inductive switch is off-state, when namely pin is stepped on the brake pedal braking vehicle, and the vacuum air pump inoperative; If the sealing effectiveness that leather cup plays is poor, vacuum pump probably also can be worked in the time of the automobile normal brake application, cause the brake booster internal pressure excessively low, can bring large braking effect even the driver gently steps on brake pedal, probably the driver in the car and the personnel of riding are damaged.
The above-mentioned vacuum automobile auxiliary device of stopping, described vacuum pump comprises vacuum cylinder, motor, the stationary magazine creel of open column shape, the two ends of stationary magazine creel have the axle eye that is communicated with its hollow cavity, vacuum cylinder comprises cylindrical shell and is fixed on the loam cake and the lower cover that has the axle eye of cylindrical shell upper and lower side, one end of stationary magazine creel is fixed on the lower of vacuum cylinder and covers, axle eye on the stationary magazine creel is relative with the lower axle eye that covers, be provided with two sizes in the cylindrical shell, the web that shape is identical, web comprises rotating shaft and is evenly distributed on rotating vane in the rotating shaft and the arbitrary cross section of web is size, the petal-shaped that shape is identical, rotating vane on two webs is interlaced, the rotating shaft length of web and the appearance of cylindrical shell etc., except two web revolution spaces, be entity in the described cylindrical shell, the rotating shaft of one web is having connecting bore vertically near on the axial end of lower cover, be fixed with adapter shaft in this connecting bore, adapter shaft stretches out cylindrical shell and stretches into stationary magazine creel by the axle eye on the stationary magazine creel by the axle eye that covers down, the barrel of cylindrical shell is provided with bleed interface and the interface of giving vent to anger, the interface of bleeding is communicated with the internal cavity of cylindrical shell with the interface of giving vent to anger, motor is fixed on the other end of stationary magazine creel, and the output shaft of motor stretches into stationary magazine creel and is connected with adapter shaft.This vacuum pump structure is ingenious, utilize a motor can drive two webs and rotate and vacuumize, and vacuumizing effect is good, has also saved the space of self simultaneously, is convenient to be installed in the automobile the inside, and this pump does not need vacuum pump oil yet, and is both economical.
The above-mentioned vacuum automobile auxiliary device of stopping, described loam cake is the boss-shaped structure, the rotating shaft of two webs is having adjustment hole vertically near on the axial end of loam cake, loam cake is provided with groove in the center of the part of projection, is placed with regulating spring in the groove, and the two ends of groove have axis hole, be provided with adjusting shaft in the axis hole, in the adjustment hole on the one end insertion web of adjusting shaft, the two ends of regulating spring withstand on the cylinder surface of adjusting shaft, and the sealing of the bossing of loam cake is fixed with top cover.The regulating spring two ends of compression withstand on the cylinder surface of adjusting shaft, regulating spring utilizes it to recover elastic force can be so that the rotating vane of web be close to the inwall of cylindrical shell, thereby so that the vacuumizing effect of vacuum pump is obvious, be beneficial to driver's braking vehicle behind the automobile died, regulating spring uses after the elasticity deficiency replaceable for a long time, guarantees braking effect.
The above-mentioned vacuum automobile auxiliary device of stopping, have ventilation interface on the casing of described motor, the ventilation interface that the interface of giving vent to anger on the cylindrical shell barrel is connected with motor case by tracheae connects, and the air of releasing in the vacuum cylinder can be the motor cooling by the ventilation interface on the motor case.
The present invention has increased the vacuum automobile auxiliary device of stopping at existing the stop automobile of system of oil that adopts, after having guaranteed that sudden engine is flame-out, when stepping on brake pedal, driver's pin in the brake booster housing difference of pressure is arranged, the driver just can utilize the light braking vehicle of difference of pressure, greatly reduce automobile at the probability of died generation safety misadventure, and structure of the present invention is ingenious, volume is little, be installed in the automobile and can not take too large space, be worth of widely use.
Description of drawings
Fig. 1 is the stop scheme drawing of auxiliary device of vacuum automobile.
Fig. 2 is the structural representation of engine operation inductive switch.
Fig. 3 is the structural representation of vacuum pump.
Fig. 4 is the A-A cutaway view of vacuum cylinder on the vacuum pump.
Fig. 5 is the structural representation of the vacuum cylinder loam cake of vacuum pump.
Among the figure: 1-engine operation inductive switch, 2-vacuum pump, 3-braking signal switch, the 4-storage battery, 5-electromagnetic switch, 10-top shell, the 11-drain pan, 12-eyelet, 13-socket, 14-socket axle, 15-binding post, 16-vacuum interface, the 17-leather cup, 18-switch column, 19-spring, the 21-vacuum cylinder, 22-motor, 23-stationary magazine creel, the 210-cylindrical shell, 211-loam cake, 212-lower cover, 213-web, the 214-interface of bleeding, the 215-interface of giving vent to anger, the 220-ventilation interface, 2110-groove, 2111-regulating spring, the 2112-axis hole, the 2113-adjusting shaft.
The specific embodiment
The vacuum automobile auxiliary device of stopping, comprise engine operation inductive switch 1, vacuum pump 2 with bleed interface 214 and the interface 215 of giving vent to anger, the braking signal switch 3 that disposes on the automobile, storage battery 4, electromagnetic switch 5, wherein engine operation inductive switch 1 comprises the housing that is connected to form by top shell 10 and drain pan 11, have eyelet 12 on 10 of the top shells, the top end opening of top shell 10 and opening part stretch out and form socket 13, be fixed with the socket axle 14 that has through hole in the socket 13, be fixed with binding post 15 in the through hole of socket axle 14,11 of drain pans are provided with vacuum interface 16, the sealing of the junction of top shell 10 and drain pan 11 is fixed with the leather cup 17 that top shell 10 and drain pan 11 are separated in the housing, and the sealing of leather cup 17 midways location is fixed with switch column 18, and an end of switch column 18 contacts with binding post 15, the other end is fixed with spring 19, and the other end of spring 19 is fixed on the bottom of drain pan 11; The positive pole that switch column 18 in the engine operation inductive switch 1 is connected with storage battery by the eyelet 12 on it connects, the contact that binding post 15 is connected with braking signal switch connects, the coil of being connected with electromagnetic switch in another contact of braking signal switch 3 connects, one binding post of electromagnetic switch 5 connects the positive pole of storage battery, another binding post of electromagnetic switch 5 connects the positive terminal of motor on the vacuum pump 2, and the negative pole of storage battery 4 connects the negative terminal of motor on the vacuum pump 2.The above-mentioned vacuum automobile auxiliary device of stopping, top shell 10 and drain pan 11 are provided with flange, and leather cup 17 is clipped between the flange on top shell 10 and the drain pan 11, and top shell 10 is connected with drain pan and is connected by flange.The above-mentioned vacuum automobile auxiliary device of stopping, described vacuum pump 2 comprises vacuum cylinder 21, motor 22, the stationary magazine creel 23 of open column shape, the two ends of stationary magazine creel 23 have the axle eye that is communicated with its hollow cavity, vacuum cylinder 21 comprises cylindrical shell 210 and is fixed on the loam cake 211 and the lower cover 212 that has the axle eye of cylindrical shell 210 upper and lower sides, one end of stationary magazine creel 23 is fixed on the lower cover 212 of vacuum cylinder 21, axle eye on the stationary magazine creel 23 is relative with axle eye on the lower cover 212, be provided with two sizes in the cylindrical shell 210, the web 213 that shape is identical, web 213 comprises rotating shaft and is evenly distributed on rotating vane in the rotating shaft and the arbitrary cross section of web 213 is size, the petal-shaped that shape is identical, rotating vane on two webs 213 is interlaced, the rotating shaft length of web 213 and the appearance of cylindrical shell 210 etc., except two web 213 revolution spaces, be entity in the described cylindrical shell 210, the rotating shaft of one web 213 is having connecting bore vertically near on the axial end of lower cover 212, be fixed with adapter shaft in this connecting bore, adapter shaft stretches out cylindrical shell 210 and stretches into stationary magazine creel 23 by the axle eye on the stationary magazine creel 23 by the axle eye on the lower cover 212, the barrel of cylindrical shell 210 is provided with bleed interface 214 and the interface 215 of giving vent to anger, the interface 214 of bleeding is communicated with the internal cavity of cylindrical shell 210 with the interface 215 of giving vent to anger, motor 22 is fixed on the other end of stationary magazine creel 23, and the output shaft of motor 22 stretches into stationary magazine creel 23 and is connected with adapter shaft.The above-mentioned vacuum automobile auxiliary device of stopping, described loam cake 211 is the boss-shaped structure, the rotating shaft of two webs 213 is having adjustment hole vertically near on the axial end of loam cake 211, loam cake 211 is provided with groove 2110 in the center of the part of projection, be placed with regulating spring 2111 in the groove 2110, the two ends of groove 2110 have axis hole 2112, be provided with adjusting shaft 2113 in the axis hole 2112, in the adjustment hole on the one end insertion web 213 of adjusting shaft 2113, the two ends of regulating spring 2111 withstand on the cylinder surface of adjusting shaft 2113, and the sealing of the bossing of loam cake 211 is fixed with top cover 2114.The above-mentioned vacuum automobile auxiliary device of stopping has ventilation interface 220 on the casing of described motor 22, the ventilation interface 220 that the interface 215 of giving vent to anger on cylindrical shell 210 barrels is connected with motor on the casing by tracheae connects.During implementation, cylindrical shell 210 is for drawing out the steel cylinder of web revolution space, the function that such structure can only vacuumize with a motor realization at steel column.
Claims (5)
1. the vacuum automobile auxiliary device of stopping, it is characterized in that comprising engine operation inductive switch (1), vacuum pump (2) with the interface of bleeding (214) and the interface of giving vent to anger (215), the braking signal switch that disposes on the automobile (3), storage battery (4), electromagnetic switch (5), wherein engine operation inductive switch (1) comprises the housing that is connected to form by top shell (10) and drain pan (11), have eyelet (12) on the top shell (10), the top end opening of top shell (10) and opening part stretch out and form socket (13), be fixed with the socket axle (14) that has through hole in the socket (13), be fixed with binding post (15) in the through hole of socket axle (14), drain pan (11) is provided with vacuum interface (16), the junction of top shell (10) and drain pan (11) seals and is fixed with the leather cup (17) that top shell (10) and drain pan (11) are separated in the housing, the sealing of leather cup (17) center is fixed with switch column (18), one end of switch column (18) contacts with binding post (15), the other end is fixed with spring (19), and the other end of spring (19) is fixed on the bottom of drain pan (11); Switch column (18) in the engine operation inductive switch (1) is connected 4 by the eyelet on the top shell (12) with storage battery) the positive pole connection, binding post (15) is connected 3 with braking signal switch) the contact connect, another contact of braking signal switch (3) is connected 5 with electromagnetic switch) coil connect, one binding post of electromagnetic switch (5) connects the positive pole of storage battery, another binding post of electromagnetic switch (5) connects the positive terminal on the motor on the vacuum pump, and the negative pole of storage battery (4) connects the negative terminal of motor on the vacuum pump (2).
2. the vacuum automobile according to claim 1 auxiliary device of stopping, it is characterized in that top shell (10) and drain pan (11) are provided with flange, leather cup (17) is clipped between the flange on top shell (10) and the drain pan (11), and top shell (10) is connected 11 with drain pan) connect by flange.
3. the vacuum automobile according to claim 1 and 2 auxiliary device of stopping, it is characterized in that described vacuum pump (2) comprises vacuum cylinder (21), motor (22), the stationary magazine creel of open column shape (23), the two ends of stationary magazine creel (23) have the axle eye that is communicated with its hollow cavity, vacuum cylinder (21) comprises cylindrical shell (210) and is fixed on the loam cake (211) of cylindrical shell (210) upper and lower side and has the lower cover (212) of axle eye, one end of stationary magazine creel (23) is fixed on the lower cover (212) of vacuum cylinder (21), axle eye on the stationary magazine creel (23) is relative with axle eye on the lower cover (212), be provided with two sizes in the cylindrical shell (210), the web that shape is identical (213), web (213) comprises rotating shaft and is evenly distributed on rotating vane in the rotating shaft and the arbitrary cross section of web (213) is size, the petal-shaped that shape is identical, rotating vane on two webs (213) is interlaced, the appearance of the axial length of web (213) and cylindrical shell (210) etc., except two webs (213) revolution space, be entity in the described cylindrical shell (210), the rotating shaft of one web (213) is having connecting bore vertically near on the axial end of lower cover (212), be fixed with adapter shaft in this connecting bore, adapter shaft stretches out cylindrical shell (210) and stretches into stationary magazine creel (23) by the axle eye on the stationary magazine creel (23) by the axle eye on the lower cover (212), the barrel of cylindrical shell (210) is provided with the interface of bleeding (214) and the interface of giving vent to anger (215), bleed interface (214) and the interface of giving vent to anger (215) is communicated with the internal cavity of cylindrical shell (210), motor (22) is fixed on the other end of stationary magazine creel (23), and the output shaft of motor (22) stretches into stationary magazine creel (23) and is connected with adapter shaft.
4. the vacuum automobile according to claim 3 auxiliary device of stopping, it is characterized in that described loam cake (211) is the boss-shaped structure, the axle of two webs (213) is having adjustment hole vertically near on the axial end of loam cake (211), loam cake (211) is provided with groove (2110) in the center of the part of projection, be placed with regulating spring (2111) in the groove (2110), the two ends of groove (2110) have axis hole (2112), be provided with adjusting shaft (2113) in the axis hole (2112), in the adjustment hole on the one end insertion web (213) of adjusting shaft (2113), the two ends of regulating spring (2111) withstand on the cylinder surface of adjusting shaft (2113), and the bossing sealing of loam cake (211) is fixed with top cover (2114).
5. the vacuum automobile according to claim 4 auxiliary device of stopping, it is characterized in that having ventilation interface (220) on the casing of described motor (22), the interface of giving vent to anger (215) on cylindrical shell (210) barrel is connected 22 by tracheae with motor) ventilation interface (220) on the casing connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210357390.9A CN102874243B (en) | 2012-09-24 | 2012-09-24 | Automobile vacuum-brake assisting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210357390.9A CN102874243B (en) | 2012-09-24 | 2012-09-24 | Automobile vacuum-brake assisting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102874243A true CN102874243A (en) | 2013-01-16 |
| CN102874243B CN102874243B (en) | 2015-05-20 |
Family
ID=47475833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210357390.9A Expired - Fee Related CN102874243B (en) | 2012-09-24 | 2012-09-24 | Automobile vacuum-brake assisting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102874243B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3735067A (en) * | 1972-01-14 | 1973-05-22 | Gen Motors Corp | Piston type contact actuator structure for automotive power brake switch assembly |
| CN101025140A (en) * | 2007-02-09 | 2007-08-29 | 姬腾飞 | Engine starter and its control apparatus |
| JP4003153B2 (en) * | 1999-10-15 | 2007-11-07 | ボッシュ株式会社 | Automatic brake device automatic operation detection device |
| CN101746369A (en) * | 2008-12-10 | 2010-06-23 | 长春科威机械有限责任公司 | Brake vacuum auxiliary device for automobiles |
| CN201520291U (en) * | 2009-07-20 | 2010-07-07 | 杨继新 | Safety device of braking system of automobile |
| CN202111009U (en) * | 2011-05-06 | 2012-01-11 | 任丘市双楼电碳制品有限公司 | Single-winding electromagnetic switch for starter |
| CN202827555U (en) * | 2012-09-24 | 2013-03-27 | 杜喜堂 | Car vacuum brake auxiliary device |
-
2012
- 2012-09-24 CN CN201210357390.9A patent/CN102874243B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3735067A (en) * | 1972-01-14 | 1973-05-22 | Gen Motors Corp | Piston type contact actuator structure for automotive power brake switch assembly |
| JP4003153B2 (en) * | 1999-10-15 | 2007-11-07 | ボッシュ株式会社 | Automatic brake device automatic operation detection device |
| CN101025140A (en) * | 2007-02-09 | 2007-08-29 | 姬腾飞 | Engine starter and its control apparatus |
| CN101746369A (en) * | 2008-12-10 | 2010-06-23 | 长春科威机械有限责任公司 | Brake vacuum auxiliary device for automobiles |
| CN201520291U (en) * | 2009-07-20 | 2010-07-07 | 杨继新 | Safety device of braking system of automobile |
| CN202111009U (en) * | 2011-05-06 | 2012-01-11 | 任丘市双楼电碳制品有限公司 | Single-winding electromagnetic switch for starter |
| CN202827555U (en) * | 2012-09-24 | 2013-03-27 | 杜喜堂 | Car vacuum brake auxiliary device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102874243B (en) | 2015-05-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201437357U (en) | Air brake system for electric proportional control of engineering special vehicle | |
| CN102795219A (en) | Motor-assisted integrated automobile brake system | |
| CN203601023U (en) | Intelligent error-stepping preventing accelerator protection system | |
| CN202827555U (en) | Car vacuum brake auxiliary device | |
| CN104290723B (en) | Automobile electric control hydraulic braking system and energy recycling method thereof | |
| CN208264236U (en) | Simple integrated type electrical brake fluid system | |
| CN107600050B (en) | Disc brake vehicle energy recovery device | |
| CN102874243B (en) | Automobile vacuum-brake assisting device | |
| CN105604633B (en) | Automobile and tractor engine valve energy conserving system | |
| CN201980220U (en) | Electronic control type vacuum booster with emergency braking function | |
| CN101526115B (en) | Automatic control device of clutch of hydraulic hybrid-power bus | |
| CN206087148U (en) | Hydraulic pressure drum assembly of stopping | |
| CN212046737U (en) | Low-pressure automatic inflating device for tyre | |
| CN201424014Y (en) | ABS four-channel pressure regulator body | |
| CN204250005U (en) | A kind of automobile electrically-controlled hydraulic brake system | |
| CN203655948U (en) | Clutch for plug-in hybrid electric vehicle | |
| CN203439015U (en) | Braking system of tractor | |
| CN101633353B (en) | ABS seat body | |
| CN206647465U (en) | Automobile brake chamber with functions of waterproof and dustproof | |
| CN102529937B (en) | Parking brake valve for front axle | |
| CN201162794Y (en) | Automatic clutch control device of hydraulic pressure mixed power bus | |
| CN206067725U (en) | A kind of hydraulic pressure drum brake assembly | |
| CN201405841Y (en) | Hydraulic braking force distribution control valve | |
| CN203864902U (en) | Combined handbrake device | |
| CN202987118U (en) | A novel blow-out brake system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150520 Termination date: 20180924 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |