CN2209077Y - Pressure-balance full-automatic automotive emergency brake structure - Google Patents

Abstract

The utility model discloses a pressure-balance full-automatic automotive emergency brake structure which belongs to the emergency brake device of an air braking vehicle. The utility model is composed of a hysteresis open and close type stop valve which is linked with the vehicle brake pedal and which brakes a whole pump arm, a spring energy storage chamber, etc. When the sudden fault of the brake system of the vehicle suddenly results in the failure of brake, the stop valve automatically commands the spring energy storage chamber to work so that emergency brake can be reached and the running safety of the vehicle can be ensured. Brake strength can be optionally controlled by a brake pedal to reach emergency running. The utility model has the advantages of simple structure and high safety. When the structure is adopted, the goals of increased parking capacity, controllable brake strength and full-automatic emergency running can be reached, ensuring the safety.

Description

Pressure-balance full-automatic automotive emergency brake structure

The utility model belongs to the air brake vehicle emergency brake device, is a kind of constant-pressure full-automatic emergency braking structure for vehicle.

Existing gas system vehicle adopts spring energy-storage chamber (elastic force chamber) to realize the Steyr series of parking function and emergency brake by the M/C handle, Yan'an S * 161, autotrucies such as red rock series, all when the vehicle Parking or after driving vehicle brake system fault causes brake failure, chaufeur needs to remove operating control handle with hand, with the direct exhaust to atmosphere of the indoor pressurized air of elastic force, the indoor compression spring of elastic force loses spontaneous resetting behind the compressive force, promote the car brakeing arm, realize Parking or emergency brake, chaufeur is suddenly in emergency circumstances malfunctioning in brake, operate very inconvenient, because the dynamics of emergency brake is sharply outburst, can not arbitrarily control, can't realize slow braking (point is stopped), the generation that is difficult to effectively try to forestall traffic accidents.

The problems referred to above at the prior art existence, the purpose of this utility model is to provide a kind of constant-pressure full-automatic emergency braking structure for vehicle, promptly utilize the hysteresis formula shutoff valve control elastic force chamber and the brake repair room inner air pressure balance of elastomeric material, thereby the realization driving vehicle is in the moment of brake failure suddenly, emergency brake power is provided this structure full automaticity, guarantee the safety arrestment of driving vehicle, and can be under the state that the motor vehicle braking system fault is not repaired, as long as have safe atmospheric pressure in the air tank, vehicle still can be met an urgent need and be travelled, when the pulling handle, can realize parking function, so the generation of pernicious traffic accident can be controlled or be reduced to greatest extent to the utility model, guarantees traffic safety.

The utility model is mainly by hysteresis open and close type shutoff valve (1), cylinder lever connecting rod (2), elastic force chamber (3), handle (4), Warning light (5), buzzer phone (6), contact switch (7), support (8), pull bar shaft clevis (9) and draw pure (10) etc. partly to form.Pull bar (2) is connected the valve arm (19) of hysteresis open and close type shutoff valve (1) with car brakeing master cylinder arm (11), it can be linked with brake pedal (12) through car brakeing pull bar (18).Valve arm (19) is slack running fit with pull bar (2), and its interlock stroke can be regulated by regulating bolt (30), and valve arm free end pure through drawing (10) is connected with handle (4).The admission port (14) of hysteresis shutoff valve (1) is communicated with air tank (13) by the road, its valve pocket top is communicated with elastic force chamber (3) by the road, the spool of shutoff valve (23) is made of the rubber elastomeric material, vent (15) is in normally off under the effect of the terminal spring of valve rod (22) (24), and vent (15) through exhausr port (16) by pipeline and brake repair room (17) pipeline connection; The seal ring (21) that elastomeric material is made is installed between valve rod tail springs (24) and valve body afterbody, valve arm (19) lower end be fixed on valve arm supporting (25) on the valve body and be and be rotationally connected, its valve arm (19) withstands the end of valve rod (22).When stepping on brake pedal (12), pull bar (18) makes its valve arm (19) interlock through master brake cylinder arm (11), thereby compression spring (24), valve rod (22) is moved, spool this moment (23) is closed admission port (14) earlier and is then opened vent (15), make hysteresis shutoff valve (1) when emergency braking, block path between air tank (13) and elastic force chamber (3) earlier, pressurized air in the elastic force chamber (3) is communicated with brake repair room (17) by pipeline through vent (15) and exhausr port (16), makes the equilibrium of pressure of elastic force chamber (3) and brake repair room (17).When normal or atmospheric pressure was in safe air pressure range when former brake system, because the pressure of brake repair room (17) is identical with air tank (13) pressure, and the air pressure of elastic force chamber (3) was just identical with air tank (13) originally.So even if emergency braking is stepped on tread plate (12), air pressure in the elastic force chamber (3) does not change, so do not work, and when the unexpected et out of order of former brake system, as total failure of pump, pipeline is damaged to be leaked, brake repair room (17) epithelium breaks etc., atmospheric pressure in its pipeline and the brake repair room (17) must be significantly less than the atmospheric pressure of air tank (13) even be zero, it is identical with air pressure in the brake repair room (17) that air pressure in this moment elastic force chamber (3) just sharply reduces to, and thereby the result of interior the release in elastic force chamber (3) makes the spontaneous stretching, extension of the indoor spring of elastic force drive lever interface fork (9) and spurs push rod fork (8) again drive and brake regulating arm realization emergency brake.After brake pedal (12) resets, valve arm (19) return, under the effect of spring (24), the vent (15) of hysteresis shutoff valve (1) is closed in advance, and admission port (14) hysteresis is opened, pressurized air in the air tank (13) flows into elastic force chamber (3), and spring is compressed and resets, brake off.Vehicle relies on the reciprocal operation of structure before the brake system fault is not repaired, can realize emergent safely travelling.When the slow braking of vehicle (point is stopped), because pipe link (2) is adjustable with the interlock stroke of shutoff valve arm (19), valve arm (19) is failure to actuate in the slow glancing impact pedal travel stroke of vehicle, thereby emergency braking structure is not worked.But if vehicle is when the unexpected et out of order of brake system causes brake failure in slow braking procedure, the brake pedal emergency braking travel position of must stepping on, the utility model just commences work without delay, and realizes emergency brake.

During Parking, pulling handle (4), pure through drawing (10) make hysteresis shutoff valve arm (19) action, and elastic force chamber (3) enter mode of operation, realize parking function.When work in elastic force chamber (3), contact switch (7) turn-on power Warning light (5), buzzer phone (6) work.During Parking, after handle (4) pulling, normally closed switch (20) disconnects, and cuts off the electricity supply, and Warning light (5) and buzzer phone (6) are not worked.

Compared with the prior art, the utility model can be realized emergency braking and slow braking by the interlock of brake pedal and hysteresis shutoff valve, without manual manipulation.After the brake failure of motor vehicle braking system et out of order, this structure just drops into automatically immediately and realizes emergency braking.Under not eliminating situation of motor vehicle braking system fault, this structure can guarantee that vehicle has its dynamics of safety arrestment power and can realize emergent travelling arbitrarily by brake pedal control.The utility model is simple in structure, and is easy to use, and safety, reliable can be guaranteed traffic safety, avoids the generation of pernicious traffic accident.Obvious social and economic benefit are arranged.

Description of drawings:

Fig. 1 is the utility model structural representation;

Fig. 2 is the utility model front and rear wheel emergency brake scheme drawing;

Among the figure:

1---the hysteresis shutoff valve; 2---cylinder lever connecting rod;

3---the elastic force chamber; 4---handle;

5---Warning light; 6---buzzer phone;

7---contact switch; 8---brake repair room push rod fork;

9---the pull bar shaft clevis; 10---draw pure;

11---the master brake cylinder arm; 12---brake pedal;

13---air tank; 14---admission port;

15---vent; 16---air extractor duct;

17---brake repair room; 18---brake-pedal linkage;

19---the shutoff valve arm; 20---the normally closed pass of running jointly;

21---the close property of elasticity packing ring; 22---valve rod;

23---Elastic valve core; 24---spring;

25---the supporting of valve arm; 26---preceding air receiver connection pipe;

27---preceding elastic force chamber connection pipe; 28---preceding brake repair room connection pipe;

29---spring; 30---setting nut.

Fig. 2 provides is embodiment with two hysteresis shutoff valves and usefulness, if adopt two hysteresis shutoff valves, then can be connected with brake repair room with air tank, the elastic force chamber of brake system before the automobile, thereby realize the front and rear wheel emergency brake by pipeline (26), (27), (28).

Claims (2)

1, a kind of constant-pressure full-automatic emergency braking structure for vehicle, it is characterized in that: by hysteresis open and close type shutoff valve (1), pipe link (2), elastic force chamber (3), handle (4), Warning light (5), buzzer phone (6), contact switch (7), support (8), pull bar shaft clevis (9) and draw part such as pure (10) to form; Pull bar (2) is connected the valve arm (19) of hysteresis open and close type shutoff valve (1) with car brakeing master cylinder arm (11), can link with brake pedal (12) through car brakeing pull bar (18); Valve arm (19) is slack running fit with pull bar (2), and its interlock stroke can be regulated by regulating bolt (30), and valve arm free end pure through drawing (10) is connected with handle (4); The admission port (14) of hysteresis shutoff valve (1) is communicated with elastic force chamber (3) by the road, cutting the spool (23) of going up valve (1) is made by the rubber elastomeric material, vent (15) is in normally off under the effect of the terminal spring of valve rod (22) (24), and vent (15) is through the pipeline connection of exhausr port (16) by pipeline and brake repair room (17); The tightening seal washer (21) that elastomeric material is made is installed between valve rod tail springs (24) and the valve body afterbody, valve arm (19) lower end be fixed on valve arm supporting (25) on the valve body and be and be rotationally connected, and valve arm (19) withstands the end of valve rod (22).

2, according to the described constant-pressure full-automatic emergency braking structure for vehicle of claim 1, it is characterized in that: the two hysteresis open and close type shutoff valves of employing (1---in the time of A), can brake air receiver, elastic force chamber, brake repair room and be communicated with respectively with before the automobile by pipeline (26), (27), (28), realize the front and rear wheel emergency brake.

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