TWI238133B - Backup car brake system - Google Patents

Abstract

A kind of backup car brake system, which is co-installed with the original brake system in the car using hydraulic pressure as the main brake system; when the original brake system malfunctions, the backup brake system is triggered to automatically generate the rescue alternative to enhance the reliability of the car-brake system. The backup brake system comprises mainly the tube-connection of one hydraulic oil chamber, one automatic hydraulic pump, one hydraulic pressure adjusting valve, shuttle valves with the number same as the number of wheels, and a few automatic close-lock valve. The backup brake system is also installed with a few hydraulic pressure sensors, one driver-triggered brake sensor, and controlling circuits for triggering and controlling the automatic hydraulic pump; wherein the common end of each shuttle valve is connected to the hydraulic brake branch-pump within the adjacent wheel through the automatic close-lock valve; one shuttle end-tube is connected to the tube end of the hydraulic brake branch-pump connected from the correspondent original brake system, and the other shuttle end-tube is connected to the output-end of the automatic hydraulic pump, which is connected to the hydraulic pressure adjusting valve; the input-end of the automatic hydraulic pump is inserted into the hydraulic oil chamber, and the sensing-end of hydraulic pressure sensors is connected with the pressure tube in the original brake system; the signal-transmitting ends of the hydraulic pressure sensors and the driver-triggered brake sensor are connected to the input-end of the controlling circuits and the output-ends of the controlling circuits are connected to the controlling acceptance points correspondent to the automatic hydraulic pump; in this way, when the brake hydraulic pressure is not enough derived from the original brake system malfunction, the shuttle valves are immediately triggered by the sensing pump pressure to supply, replacing the original brake system, hydraulic pressure to the hydraulic pressure brake branch-pump to guarantee safe car-brake.

Description

1238133

V. Description of the invention (1) [Technical field to which the invention belongs] The vehicle system belongs to the vehicle brake spirit. When the brake hydraulic pressure is insufficient, the brake system is assisted to replace the original brake to ensure the safety of the brake. The present invention relates to the technical field of vehicle backup braking, especially when the original braking system fails to immediately and inductively drive the vehicle backup system provided by the present invention to supply hydraulic pressure to hydraulic braking. [Previous Technology] Since the invention of the vehicle, the vehicle speed performance has been continuously increasing. Lifting, people ’s traffic, and speed performance have increased the burden on brakes, which has made the brakes more and more heavy. Nowadays, the MW buckle of a car ’s Ik ’s car is not the first to rely on the full mechanical lamb. Structure, using hydraulic parts as the main quick and gentle braking effect. …, 仃 Speed 蛊 糸 I! The various hydraulic brakes that directly and indirectly push the brake hydraulic pressure on the brake are all used in vehicles, as described below: As shown in the figure-for the vehicle hydraulic pressure purely by foot pump pressure Brake system, which supplies hydraulic pumps to the front and rear wheels of the hydraulic brake sub-pumps 20, 21, and 10 pieces only. The foot brake master cylinder 30 is pressed, and the pump 3 is depressed. The hydraulic pressure in the pump (here the hydraulic pressure refers to the brake oil or a hydraulic brake of the same nature as the brake oil). The input pressure boosted hydraulic brake system has a pumping assembly. The foot brake master cylinder 3 0 ′ is provided with a negative pressure booster chamber 31, and a valve connected to the brake master cylinder 3 0 in the chamber 31 ( The valve is not shown in the figure.) Connect the engine vacuum 40. Pressing the brake master cylinder 30 at the same time will cause the valve air to open to generate thrust boost, and strengthen the hydraulic brake sub-pumps of the front and rear wheels. And make driving and braking effortless and effortless ”'Second picture shows the hydraulic double pressure boost hydraulic brake system, its pump

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2 They are equipped with a series of foot brake master cylinder connected with oil pressure boost chamber 32, pump 50 pressure SV: valve 33 'and a vehicle engine belt with hydraulic pressure of oil chamber, and oil is supplied to the power steering gear oil Pressure pushing chamber 60: The outlet is connected to the hydraulic booster chamber 32 of the brake master pump 30, which is more than i ^: return pipes are arranged between the pushing chambers, and each of the pumps 30 is connected to the outlet pipe 33 The hydraulic brake sub-pumps that distribute oil pressure to the front and rear wheels can be used to boost the brakes on the front wheels 20 and 21 by hydraulic boost from the power steering gear oil pressure chamber 60 pump when stepping on the brakes. The fourth picture shows the pressure-doubled pressure boosted foot-controlled hydraulic brake system. The pumping component 10 is equipped with a foot-type master cylinder 30 and a pneumatic boosting hydraulic pressure. Cylinder 60, an air compressor 70 with a rotating engine of the vehicle, and an air storage tank 80. The hydraulic oil output end of the pump 30 first reaches the hydraulic booster slave cylinder 61 of the power cylinder 60, and then exits from the slave cylinder 61. The hydraulic brake cylinders 20, 21 that flow into the front and rear wheels are connected to the end, and the power cylinder 60 is formed into the slave cylinder 61. The other side is a pneumatic boosting space, and the control hydraulic pressure is connected. The pilot valve 62 is passed through the air storage tank 80 to the air compressor 70 outlet. When the brake is stepped on, the hydraulic pressure flowing from the pump 30 is repressurized by the air pressure and sent to the hydraulic brakes of the front and rear wheels. The sub-pumps 20, 21 enhance the brakes and make driving easier and effortless. As shown in the fifth figure, the foot-controlled pneumatic double-pressure booster hydraulic brake system is used. Its pumping component 10 is equipped with a foot-controlled pneumatic brake. Master cylinder 9 〇, air pressure increasing hydraulic cylinder 63, 64, an air compressor 70 with a vehicle engine rotating, an air dehumidifier 91, and an air storage tank 80, 8 1, 82, the air compressor 7 〇 The air outlet pipe is connected to the machine 9 1 to the air storage tank 80, 8 1, 8 2 and the air storage pipes 80, 8 1, 8 2 are connected to the main pump 90, and then the main pump 9 0 gas outlet pipe is connected to the slave cylinders 6 3, 6 4 gas inlet,

1238133 V. Description of the invention (3) The slave cylinders 63, 64 pump out the pump 2 0, 2 1 and only J 8 0, 8 1, 8 2 is stored during braking, and the total pressure reaches the front. The hydraulic brake of the rear wheels saves effort by operating the brake. From the above-mentioned various vehicle systems, it is clear that under the current system and the normal operation of the parts, the brakes of the hydraulic brake system of large-scale vehicles such as trailers are mainly heavy and heavy. Once there is a slight leak, the fluid retention is insufficient, or the leakage is high, causing the brake pump pressure to be insufficient. There are many examples of this. Often, the car suddenly crashes into the cliff and suddenly decelerates due to the lack of braking. In fact, it is not the time when the vehicle leaves the factory. , The braking system equipped with the rated speed and load system for a long time to perform the heavy braking task is completely lacking the braking force. When the original braking system is dead, the braking task should be returned but can be connected to the original hydraulic braking system. The hydraulic brakes of the wheels are lightly stepped on the master cylinder 90, and the air storage tank A 9 0 is opened to the slave cylinders 6 3, 6 4 to push the liquid sub-pumps 20, 21, which also has rapid brake hydraulic pressure as the main Zhuo vehicles already have Zhuo controls, such as buses, which do not cause problems, and integrated hydraulic control; night pressure braking system maintenance or replacement due to temperature deterioration or sudden punches caused the vehicle to brake. If the business effect results in a crash, the brakes are out of control. The demand for the brake system of £ is purely due to the obstacles in the mechanism. Therefore, the first: ^ is not enough to provide the auxiliary braking machine, tour car, and gravel that are originally braked by the vehicle that can self-brake when it fails. The car is connected, but as shown in the simplified circuit diagram of the sixth figure, the driving system is used for it, and the role is extremely heavy. It is easy to break the oil pipeline of the brake and the oil seal leaks. The bus accident and the truck have almost no brakes. As a result of major casualties, its loss and regret, the lack of comprehensive braking force design of these things only depends on the fatigue and damage of a single set of hydraulic brakes. The use of a set of hydraulic pressure is mainly used as a back-up mechanism for preventing tires from dangerous injuries. Start immediately

1238133 V. Description of the invention (4) The hydraulic brake system can really ensure the safety of the brake. f In view of the fact that the conventional vehicle design only uses a set of hydraulic pressure as the J vehicle system that mainly generates braking force, if the above sudden braking failure phenomenon occurs, that is, the lack of the safety function of returning to the braking method of the I method, the present inventor is actively studying ways to improve After a difficult invention process, the invention finally came into being. [Summary of the Invention]: These 2 inventions are intended to provide a vehicle backup brake, i = the original brake system of the vehicle with the main braking force. When the original ft, the automatic brake f is generated to make the brake multiply and reliably. This is The main object of the invention. The crime is that the vehicle of the present invention is a backup of the vehicle. The original hydraulic brake system or the engine is made by the driver; 'It is = shuttle reading, and by the shuttle valve, the two hydraulic brakes are pressed. ：： The liquid-phase brake has the function of pumping, which makes the original brake system and the strange monster = sensitively controlled and controlled high-pressure H-night pressure flowing hydraulic pressure. The switching option is more than the working fluid volume in the system. Knife pumps, even if the original hydraulic brakes show that such vehicles are available; =… Temple borrowed…: urgent… safe, and also: you can change the lock valve in the hydraulic sensitive car of each wheel ”to prevent the order = A series of "self-exhaust caused by the moving valve, causing the backup system to fail at the same time: today ^: leakage, so that the liquid leakage system ensures that the system itself fails at any point. The heart, field structure, and application principle of the vehicle's backup brake system" Role and function

IM Page 9 1238133

^ According to the following description according to the drawings, a complete [preferred embodiment] can be obtained. As shown in the first to sixth figures, the hydraulic pressure is the main practice; if; Γ It only depends on a single hydraulic brake: i There is no danger of brake out of control, as described above, here; 'Re: Figure 7 is the overall automatic control circuit diagram of the vehicle backup brake system of the present invention. Brake system, and the original brake system installed on vehicles with hydraulic pressure as the main braking force, can be equipped with various pumping components 10 as described in the first to fifth figures, which can be from ^ left oil to 100, an electric Hydraulic pump 200, a hydraulic pressure regulating valve 300, the same number of wheels as 500, 50, 1, 502, 503 Shuttle valve 4 0, 4 0, 4 2 0, 40 3, automatic lock valve 22, A hydraulic indicator 800 is connected with a pipe, and is provided with a hydraulic sensor 6 0, 6 0 1, 6 0 2, 6 0 3, a driving start brake sensor 6 j 〇, and a start & electric hydraulic pump 200 The control circuit 700, in which the electric hydraulic pump 200 can be a type provided with a pump anti-reverse valve 201 at the pump outlet, and can be quantitative or can be Variable displacement person 'and each shuttle valve 4 0 0, 4 0 1, 4 0 2, 4 0 3 The common end is connected to the adjacent wheel 5 0 0, 5 0 1, 5 0 2, through the automatic lock valve 2 2 5 0 3 hydraulic brake points 20, 21, one shuttle end 4 1 0, 4 1 1, 4 1 2, 4 1 3 pipe connecting the original brake system to the corresponding hydraulic brake cylinder 20, 21 End, while the other shuttle end 420, 421, 422, 423 is connected to the output end of the electric hydraulic pump 200, and the output end of the electric hydraulic pump 200 is connected in parallel to the hydraulic pressure regulating valve 3 0, and the electric hydraulic pump 2 0 0 suction end Reached into the hydraulic oil chamber 100, and the number of hydraulic sensors 6 0 0, 6 0 1, 6 0 2, 6 0 3, is matched with the original hydraulic brake system pumping unit 10 pump outlet pipe and multi-point corresponding settings ( Modern car

Page 10 1238133 V. Description of the invention (6) The hydraulic brake system is often designed to send the component 10 to separate the two pumps out of the pipe, the hydraulic brake sub-pump 20 flowing to the front wheels 5 00,501, and the other to the rear Hydraulic brake sub-pump 2 丨 for wheels 5 0 2，503, or cross hydraulic brake sub-pump 2 0, 2} The dual oil circuit design of the number of pumping pipes), and the hydraulic pipelines in this system are pumped properly. 'What's wrong with K ?; only M f ca n’t be judged 0 0' This instrument 8 0 0 can be a force meter or another pressure warning light connected to the car's power supply induction hydraulic pressure, or a car pen The source buzzes the temple to provide maintenance or inform the driver whether the system of the invention is operating or whether the pump of the system of the invention is operating normally. In addition, the hydraulic sensors are 6 0 0, 6 0 1, 6 0 2, 6 0 3 Induction terminal M The original brake system pressure line is connected, and the hydraulic sensor 6 0 0, 6 0 1, 6 0 2, 6 0 3 transmitting terminal and driving start brake sensor 6 1 0 transmitting terminal It is connected to the input terminal of the control circuit 7 0, and then the control circuit 7 0 knows that the output terminal is connected to the electro-hydraulic to 2 0 corresponding to the controlled contact. This circuit 7 〇 〇The brake sensor 6 1 0 is activated, as shown in the figure, next to the pumping unit 丨 〇 The foot-controlled brake pedal (or hand-controlled brake) for the driver to personally control will, ~, J Liyue b sense these The operating position of the mechanism is set, and since the sensor 61 can be a variety of types such as a photoelectric switch, a micro-switch, or a magnetic proximity switch, and the like, it can be any type, so it is not limited here. In addition, if the hydraulic sensor 6 0 0, 6 0 1, 6 0 2, 6 0 3 senses the sender if the hydraulic pressure is lower than the rated high pressure, the circuit 7 0 0 is connected by a set of bite gates 701 side by side, 702,703 'and Yi Qi 7 0 4, each hydraulic sensor 6 00 6 0 1, 6 0 2, 6 0 3 the sending end is connected to the group or the gate 7 0 1, 7 0 2, 7 0 3 input terminal, and the brake 7 0 2 —the input terminal is connected to the driving start brake sensor 6 1 0 signal terminal, and the other input terminal is connected to the group or brake 701, 7 0 2, 7 0 3 final output terminal, Again

1238133 V. Description of the invention (7) And the output terminal of the brake 704 is connected to the corresponding controlled contact of the electric hydraulic pump 2 0 0. And if the hydraulic sensor 6 0 0, 6 0 1, 6 0 2, 6 0 3 is the hydraulic pressure to reach the rated pressure or higher, the sender will be sensed. As shown in the eighth figure, the circuit 7 0 0 by the hydraulic pressure Sensors 600, 601, 302, 603 No. of equivalent gates 705, 706, 7 0 7, 7 0 8, 7 0 9, 7 1 0, a set of OR gates extended side by side 7 0 1, 7 0 2, 7 0 3, and a gate 7 0 4 each, 丨: [Pressure reactor 6 0 0, 6 0 1, 6 0 2, 6 0 3 The transmitting end string passes through a gate 7 0 5, 7 0 6,7 0 7,7 0 8,7 0 9,7 1 0 connected to the group or brake 7 0 1, 7 0 2, 7 0 3 input terminals, and this time interval 704 — input terminal is connected to drive to start the brake The sensor 6 1 0 is the sending end, and the other input end is connected to the group or gate 7 0 1, 7 0 2,

7 0 3 The final output, and then connect the Q704 output to the corresponding controlled contact of the electric hydraulic pump 200. As shown in the ninth figure, if the original braking system functions normally, the original braking system will still be used to brake when braking. At the same time, the hydraulic sensors 6 0, 601, 602, and 603 will sense that the original braking system pump pressure is normal. Start the electric hydraulic pump 2000 without sending a message, so that the vehicle's backup braking system will not work, and it will not interfere with the normal braking function. And if the original braking system function is distributed to the front and rear wheels 5 0 0, 5 0 1,

5 0 2, 5 0 3 hydraulic brake sub-pump 2 0, 21 1 The hydraulic pressure is abnormally low and the constant pressure is set. As shown in the tenth figure, the original braking system cannot work when braking. 0 0,6 0 1,6 0 2,6 0 3 The abnormal low pump pressure of the original brake system is sensed, and the brake action determination signal received by the driving start brake sensor 6 1 0 is sent together to start the electric hydraulic pump 2 ο 〇, immediately pump the backup hydraulic pressure, push the 400,4 0 1,4 0 2,4 0 3 access to the backup brake system of the present invention, at the same time closed the replacement of the original brake system, aid

Page 12 1238133 V. Description of the invention (8) #Car, so the pressure is defined as W, the rear car 峋 500, 501, 502, 503 liquid 厣 brake gas = pump 20, 2 1, automatically play the thumb brake mechanism, completely Takes over the original ^ = 糸 系. β…, if the original brake system function is only to the rear wheels 5 00503 hydraulic brake sub-cylinder hydraulic pressure f is lower than the rated pressure, ^, clever, wheels 5 0 0, 5 0 1 hydraulic brake sub-pump The hydraulic pressure of 20 remains normal :: As shown in the figure, only the front wheels 500, 501 can rely on the original when braking === normal braking, and the rear wheels 5 0 2, 50 3 cannot rely on the original ^ Use the brake to connect the original braking system at the same time and flow to the back _5〇 丁 2 3 ^ night pressure ^ the leakage of the car separately 丨 I have a sense of braking ^ the integrated flow wheel 502'5 0 3 hydraulic brake points The pump pressure of the pump 21 is abnormally low, and the dual-responder 61 is driven. The received brake action confirmation signal, two = start electric hydraulic pump 2QQ m send backup I pressure =, open the hydraulic brake points 21 to the rear wheel 502 '5 0 3 soil difference \ 丨' to _ car hydraulic pressure to The hydraulic daring of the rear wheels 5.2, 5Q3 was transferred to the original brake U when the original brake U partially failed, and used the backup vehicle mechanism to replace the original teaching car Li Si Pian Qiu, exhibition γ,…, Qianbei 軚 5 0 0, The hydraulic pressure of the hydraulic brake sub-cylinder 2 of 5 0 1 remains normal. Therefore, "4 hydraulic pumps 'backup hydraulic pressure' 纟 is enough to open the hydraulic brake sub-cylinder 2 to the front wheels O'M1" 4 0 0,401 Supports the hydraulic system of the brake system of the present invention, and at the same time closes and replaces the original brake system (the setting can be adjusted by adjusting the hydraulic pressure regulating valve 3 0 0, so that the electric hydraulic pump 200 pumping reserve = slightly lower hydraulic pressure The original brake system is hydraulic), so that the front wheels 5000, 501 are still braked with the original brake system, and if the original brake system leads to the front wheels 500,

Page 13 1238133 V. Description of the invention [9] When the hydraulic brake sub-pump 20 of 50 is abnormally low in pressure, when the original brake system fails locally, it automatically plays a backup brake mechanism to replace the original brake system. The effect of local leakage is the same. For the ears, the hydraulic brake cylinders 2 0, 2 1 and the shuttle valve 4 0 0, 4 0 are used for each wheel 5 0 0, 5 0 1, 5 0 2, 5 0 3 1, 2 0, 4 0 3 automatic blocking valves 22 in series, can prevent the hydraulic oil from leaking out due to a single hydraulic brake cylinder (20 or 21) leakage, which will cause the backup system to fail at the same time, ensuring the system If it fails at any point, it will continue to maintain braking performance. As a result, it can be concluded that the brake failure status program shown in Figure 12 shows that during driving, under various brake hydraulic failures of the original brake system, relying on the system of the present invention can produce a hydraulic brake backup safety function, which is not easy to detect. The brake hydraulic pressure is insufficient. If the main control parts such as the brake pedal are stuck, and other non-hydraulic failure conditions are encountered, the driver will be able to detect the non-hydraulic failure at the beginning of the start. The control is not easy and not smooth, and it is ruled out early, which will not cause the security loophole in the system of the present invention to be too unconcerned. When abnormal, the wheel (50 0 or 5 0 1 or 5 0 2 or 5 0 3) will automatically lock the wheel (2 0 0 or 5 0 1 or 5 0 2 or 5 0 3) When two wheels (50 0, 5 0 1 or 5 0 2, 5 0 3) are automatically locked, they can still run at a slow speed. Four Zhuo wheels 5 0 0, 5 0 1, 5 0 2, 5 0 3 or more locked, can only be towed immediately for repair, and based on the characteristics of the existing valve 2 2 is tied to maintenance After that, the automatic blocking valve 22 that caused the lock must be manually released and renewed, or it can be replaced with a new one when it cannot be manually restored. From the above, it can be seen that the backup brake system for such a vehicle according to the present invention does have the original When the brake system loses f, when the brake hydraulic pressure is insufficient, it will immediately sense

1238133 V. Description of the invention no) The drive replacement original brake system supplies hydraulic pressure to the hydraulic brake sub-pump to ensure the safety of the brake, and has not been used in public. It is in accordance with the provisions of the Patent Law. Those who must be aware of the above are the preferred and specific embodiments of the present invention. If the changes made according to the concept of the present invention and the functional effects do not exceed the spirit covered by the description and drawings, Within the scope of the present invention, Chen Ming should be combined. [Comparison of component numbers and names in the figure] 1 0 .... pumping unit 9 1 .... air dehumidifier

1 5 .... Slave cylinder brake oil chamber 1 0 0 ... Hydraulic oil chamber 2 0,2 1 · · · · Hydraulic brake sub-cylinder 2 0 0 ,, · Electric gravity hydraulic fruit 2 2 .... Automatic lock 2 0 1 ... anti-reverse valve 3 0 ... foot brake master cylinder 3 0 0 ... hydraulic pressure regulating valve 3 1 ... negative pressure booster room 1 0 0, 4 0 1 , 4 0 2, 4 0 3 ... Shuttle valve 3 2 .... Hydraulic boost chamber 11 0, 4 1 1, 4 1 2, 4 1 3 ... Shuttle end 3 3 ... .Hydraulic allocation ratio 1 2 ϋ, 4 2 1, 4 2 2, 4 2 3 ... Shuttle end 4 0 .... Engine vacuum: 5 0 0, 5 0 1, 5 0 2, 5 0 3 ... wheel 5 0 .... hydraulic pump 6 1 0 ... driving brake sensor

6 0 .... power steering gear oil pressure pushing chamber 7 0 0 ... control circuit 6 0 0, 6 0 1, 6 0 2, 6 0 3 ... hydraulic sensor 7 0 1, 7 0 2 , 7 0 3 ..., or brake 6 0 ..... pneumatic boosting power hydraulic pressure 7 0 4 and brake 61 .... hydraulic booster cylinder 7] 5, 7 0 6, 7 0 7, 7 0 8, 7 0 9, 7 1 0 · .No brake 6 2 .... Control hydraulic pilot valve 8 0 0 ... Hydraulic indicator 6 3, ... 4 .... Pressure increase hydraulic pressure

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V. Description ilH 70 .... Air compressor 8 0,8 1,8 2 .... Air storage tank 9 0 .... Foot-operated air brake master cylinder

1238133 Brief description of the diagram The first picture shows the hydraulic brake system of a vehicle that is purely pumped by foot. The second picture shows the vacuum double pressure boost hydraulic brake system. The third picture shows the hydraulic hydraulic brake system. The fourth picture shows the air pressure double booster foot control hydraulic brake system. _ The fifth picture shows the foot-controlled air pressure type pressure boost hydraulic brake system. · The sixth diagram is a simplified diagram of the overall automatic control circuit of the hydraulic braking system of the conventional vehicle. The seventh diagram is the overall automatic control circuit diagram of the vehicle backup braking system of the present invention. FIG. 8 is a diagram of another embodiment of the control circuit of the vehicle backup braking system of the present invention.图 The ninth figure is the function diagram of the backup brake system of the vehicle of the present invention when the original brake system functions normally. The tenth figure is an illustration of the backup function of the backup brake system of the vehicle of the present invention when the full hydraulic pressure of the original brake system is abnormal. · · Figure 11 shows the function of the backup brake system of the vehicle when the hydraulic pressure of the local brake system is abnormal. The twelfth figure is a flowchart of a braking failure condition provided with the vehicle's backup braking system of the present invention.

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Claims (1)

Sixth, the scope of patent application -mmirnmn mmmu '* «· —— ··, ----------- Peak to Private: Nazheng 2 · Vehicle backup brakes: The original hydraulic pumps of the vehicles are the same as those of the original hydraulic pumps. The locking valves of the brakes have the same effect as the shuttle shuttle valves. The utility model relates to an original hydraulic pump moving lock valve responder and a circuit of a vehicle. The internal hydraulic pressure should be a hydraulic brake sending end, the hydraulic pump is suctioned, a pump truck system is installed, and a special pressure regulating valve is formed. And the start-control electric automatic locking pipe is connected with the original shuttle end and connected with the hydraulic pressure and hydraulic pressure to control the electric pump corresponding to the vehicle receiving system, the special pressure regulating valve pressure display instrument, the moving brake moving valve and the common shuttle end The pipe end of the pipe is connected to the hydraulic oil chamber and the output end of the other hydraulic pump is displayed. The other fluid and liquid pipes are connected to the reactor. The through end passes through the shuttle end and the other end is connected to the oil chamber. At the end, the hydraulic backup brake system is connected, and the one-liquid and one-liquid driving starts. Each shuttle brake sub-cylinder sub-pump JL electric end extends the hydraulic pressure and is located in Zhengyu. There are several moving hydraulic valves in the same car connected to the brake system Electrical connection The pressure regulator valve sensor responds to the input control point of the reactor and is located at the sign, connected to the vehicle pipe, and is self-hydraulic: from the number of rounds of hydraulic sensor pumps to the hydraulic system, and Electric induction terminal and terminal, and again. The hydraulic pressure is made up of one round, and it is connected with the starter, the lock is closed, and the original shuttle is terminated. The hydraulic pressure in the appropriate pressure sensor is used as the main hydraulic oil. The corresponding hydraulic pump in the circuit wheel sends the hydraulic pressure and the original. There is a driving start by controlling the power of the car, an electric, and a number of hydraulic pressure-sensing pumps. The wheels are connected to the hydraulic pump, and the electric pipeline is the same as the original _. There are several electro-hydraulics for the shuttle valve of the main brake hydraulic oil chamber. The valve is connected to the phase brake system, and the electric pressure regulating valve is connected to the pump. The pumping hydraulic pressure sensing room, an electric valve, and the number of driving starts. Among them, each hydraulic brake pressure is at the brake end, and the electric pump is at the brake system at the suction side. Dynamic brake circuit output Page 18 In addition, the send end of the hydraulic sensor and the drive-in terminal of the control circuit are driven, and the control pump corresponds to the controlled contact. One of the vehicle backup brake systems of the item is that the sender is sensed at the rated high voltage, the extension or brake, and the brake is formed to the group or brake input terminal, and the brake-sensor sending terminal, and An input terminal, and then the brake output terminal is connected to the electric If the brake circuit of the brake system is applied for liquid control, the liquid input terminal is connected to the hydraulic pump system pressure sensor and the patented pressure sensing circuit is connected to the pressure sensing circuit to connect the group or the corresponding pipeline. The first or second device connected to the electro-hydraulic enclosure is the one with a low hydraulic pressure, which is terminated by a group of side-by-side devices to start the brake brake and finally output the control contact. 4 · The vehicle backup braking system described in item 1 or 2 of the scope of the patent application, in which the hydraulic pressure sensor must be above the rated high pressure before the sender is sensed. The control circuit consists of the same number of hydraulic pressure sensors as the hydraulic pressure sensor. No brake, ，, and OR gates connected side by side 'and a parallel gate, the sending end of each hydraulic sensor is connected to the group or brake input terminal through a no brake, and the 1 ^ 1 end of the brake is connected to drive to start the brake The sender of the sensor, the other input is connected to the final output of the group or the brake, and then the brake output is connected to the corresponding controlled contact of the electric hydraulic pump. 5 · The vehicle backup brake system described in item 1 or 2 of Shenyan's patent scope, in which the electric hydraulic pump is an anti-reverse valve at the pump outlet. "6. The vehicle backup braking system described in item 5 of the scope of patent application, wherein The electric hydraulic pump is a quantifier. 7. The vehicle backup brake system according to item 5 of the scope of patent application, wherein the electric hydraulic pump is a variable displacement pump. 1238133 Scope of patent application 8. The vehicle backup brake system described in item 2 of the scope of patent application, in which the hydraulic pressure display is a pressure gauge. 9. The vehicle backup braking system as described in item 2 of the scope of the patent application, wherein the hydraulic pressure display device is a pressure warning light connected to the vehicle's power supply induced hydraulic pressure. 10. The vehicle backup brake system as described in item 2 of the scope of patent application, wherein the hydraulic pressure display device is a buzzer connected to the vehicle's power supply induction hydraulic pressure. Page 20