CN214492888U

CN214492888U - Auxiliary braking system for vehicle

Info

Publication number: CN214492888U
Application number: CN202120756124.8U
Authority: CN
Inventors: 欧阳文玉
Original assignee: Shenzhen Zhihui Chelian Technology Co ltd
Current assignee: Shenzhen Zhihui Chelian Technology Co ltd
Priority date: 2021-04-13
Filing date: 2021-04-13
Publication date: 2021-10-26
Anticipated expiration: 2031-04-13

Abstract

The application relates to a vehicle auxiliary brake system, which comprises a detection mechanism, a brake mechanism and a brake control mechanism, wherein the detection mechanism is used for detecting whether an obstacle exists within a preset distance in front of a vehicle in a running process and outputting a detection signal when the obstacle exists; the control mechanism is electrically connected with the detection mechanism, receives and responds to the detection signal output by the detection mechanism and is used for outputting a control signal for controlling the braking of the vehicle; the clutch actuating mechanism is electrically connected with the control mechanism, receives and corresponds to a control signal output by the control mechanism and is used for pulling down a clutch pedal; and the brake actuating mechanism is electrically connected with the control mechanism, receives and responds to the control signal output by the control mechanism and is used for driving the brake pedal to move to brake the vehicle. The application has the effect of effectively reducing the damage to vehicle parts caused by flameout of the vehicle when the vehicle is automatically braked.

Description

Auxiliary braking system for vehicle

Technical Field

The application relates to the field of vehicle engineering technology, in particular to a vehicle auxiliary braking system.

Background

When a student in a driving school is in the process of learning a vehicle, because the student is not skilled in driving, the student is easy to generate danger when the student cannot brake in time due to insufficient reaction capability of active braking when encountering emergency in the driving process. The instructional cars usually adopted in driving schools are all manual-gear vehicles, and the conventional auxiliary braking system usually adopts independent braking without cutting off the power output of an engine, so that the vehicle is flamed out, and the damage to parts of a vehicle gearbox and the damage to parts connecting the engine, the gearbox and a vehicle body can be accelerated; while restarting after engine shut-down can result in wear of the starting system of the engine and wasted fuel costs.

SUMMERY OF THE UTILITY MODEL

In order to effectively reduce the damage to vehicle parts caused by flameout of a vehicle during automatic braking, the application provides a vehicle auxiliary braking system.

The application provides a vehicle auxiliary brake system adopts following technical scheme:

a vehicle auxiliary braking system comprising:

the detection mechanism is used for detecting whether an obstacle exists within a preset distance in front of the vehicle in running and outputting a detection signal when the obstacle exists;

the control mechanism is electrically connected with the detection mechanism, receives and responds to the detection signal output by the detection mechanism and is used for outputting a control signal for controlling the braking of the vehicle;

the clutch actuating mechanism is electrically connected with the control mechanism, receives and corresponds to a control signal output by the control mechanism and is used for pulling down a clutch pedal;

and the brake actuating mechanism is electrically connected with the control mechanism, receives and responds to the control signal output by the control mechanism and is used for driving the brake pedal to move to brake the vehicle.

Through adopting above-mentioned technical scheme, set up detection mechanism and detect the barrier, when control mechanism detects that the vehicle traveles the place ahead and has the barrier to need parkking, through control mechanism control separation and reunion actuating mechanism and brake actuating mechanism start to make the vehicle cut off engine power earlier at the braking in-process, brake again, thereby still flameout after realizing the vehicle braking, in order to reduce the vehicle and do not cut off the injury that emergency braking caused vehicle engine and suspension under the circumstances of engine power.

Optionally, the control mechanism includes a processor and a vehicle speed control module, and the processor is configured to receive and process information and output a control signal; the vehicle speed control module is used for setting the fastest running speed of the vehicle, the processor is electrically connected with the OBD module of the vehicle to acquire the running speed information of the vehicle, and when the running speed of the vehicle received by the processor is greater than the fastest running speed of the vehicle, the processor outputs a control signal for controlling the braking of the vehicle.

By adopting the technical scheme, the fastest running speed of the vehicle is set by the vehicle speed control module, and when the processor receives the overhigh running speed of the vehicle, the processor outputs a control signal to realize automatic braking of the vehicle, so that the occurrence of safety accidents caused by the fact that a student accelerates the vehicle unintentionally or engages wrong gears intentionally in the process of learning the vehicle to cause the overhigh running speed of the vehicle is reduced.

Optionally, the detection mechanism includes two sets of obstacle detectors, and the two sets of obstacle detectors are respectively disposed on a head and a tail of the vehicle; the control mechanism acquires information of a vehicle gear switch through the OBD module and is used for acquiring the traveling direction of the vehicle.

By adopting the technical scheme, because the vehicle has two conditions of advancing and retreating, the vehicle head and the vehicle tail are respectively provided with the obstacle detectors, so that the vehicle can realize automatic braking in the advancing or retreating process, and meanwhile, the control mechanism acquires the advancing direction of the vehicle and reduces the generation of error signals caused by the detection of the obstacle detectors in the non-advancing direction.

Optionally, the horizontal detection angles of the two groups of obstacle detectors are both greater than 120 degrees.

By adopting the technical scheme, the area of the detection range is ensured by setting the detection angle of the obstacle detector, and the area of the blind area is reduced.

Optionally, separation and reunion actuating mechanism includes that one end is fixed in the pull-down rope on the separation and reunion footboard and is used for driving the traction assembly of pull-down rope pulling separation and reunion footboard, traction assembly includes clutch motor and sets up the first seat that turns to between clutch motor and separation and reunion footboard, first seat that turns to is used for changing the pulling direction of pull-down rope and makes when pull-down rope pulling separation and reunion footboard, the direction of motion of the one end that pull-down rope is connected with the separation and reunion footboard is the same with the direction of motion of separation and reunion footboard.

Through adopting above-mentioned technical scheme, will draw to be connected between subassembly and the separation and reunion footboard through drop-down rope to when realizing control mechanism output control signal, separation and reunion actuating mechanism can drive the separation and reunion footboard and remove.

Optionally, brake actuating mechanism includes that one end is fixed in the brake rope on the brake pedal and is used for driving the drive assembly of brake rope pulling brake pedal, drive assembly includes brake motor and sets up the second between brake motor and brake pedal and turns to the seat, the second turns to the pulling direction that the seat is used for changing brake rope and makes during brake rope pulling separation and reunion footboard, the direction of motion of the one end that brake rope and brake pedal are connected is the same with brake pedal's direction of motion.

Through adopting above-mentioned technical scheme, be connected between drive assembly and the brake pedal through the braking rope to when realizing control mechanism output control signal, brake actuating mechanism can drive the brake pedal and remove and then realize the brake braking of vehicle.

Optionally, the output rotation speed of the clutch motor is greater than that of the brake motor.

By adopting the technical scheme, the output rotating speed of the clutch motor and the output rotating speed of the brake motor are set so as to realize that the speed of the clutch actuating mechanism pulling the clutch pedal is faster than the speed of the brake mechanism pulling the brake pedal.

In summary, the present application includes at least one of the following beneficial technical effects:

1. whether obstacles exist in the vehicle running direction is detected by arranging the detection mechanism, when the vehicle needs to be braked, the vehicle is braked by the auxiliary brake system, and the clutch execution mechanism and the brake execution mechanism are arranged, so that the vehicle still does not flameout after being braked, the probability of damage to parts of the vehicle is better reduced, and the fuel waste caused by restarting of an engine after flameout is reduced;

2. the vehicle speed control module sets the fastest running speed of the vehicle, and the control system reduces the occurrence of safety accidents caused by the fact that the vehicle speed is too fast through monitoring the running speed of the vehicle;

3. through setting up the barrier detector at locomotive and rear of a vehicle respectively to not only can detect advancing reverse barrier, can also detect the barrier in car rear when backing a car, further improve the security of traveling.

Drawings

FIG. 1 is a block diagram of the overall control flow of an embodiment of the present application;

FIG. 2 is a view showing the installation position of the detecting mechanism of the embodiment of the present application on the vehicle;

FIG. 3 is a schematic diagram of the overall structure of a clutch actuator and a brake actuator according to the embodiment of the present application;

FIG. 4 is a schematic view of the overall structure of the clutch actuator according to the embodiment of the present application;

FIG. 5 is an exploded view of a portion of a clutch actuator according to an embodiment of the present application, mainly illustrating the structure of a first knuckle block;

FIG. 6 is a schematic view of the overall structure of the brake actuator according to the embodiment of the present application;

fig. 7 is an exploded view of a part of the structure of the brake actuator according to the embodiment of the present application, mainly showing the structure of the second steering base.

Description of reference numerals: 1. a detection mechanism; 11. an obstacle detector; 2. a control mechanism; 21. a processor; 22. a vehicle speed control module; 3. a clutch actuator; 31. pulling down the rope; 32. a traction assembly; 321. a clutch motor; 322. a first steering base; 3221. a first fixed seat; 32211. a first fixing hole; 3222. a first movable seat; 32221. a first arc-shaped slot; 3223. a first pulley; 3224. a first guide piece; 32241. a first through hole; 3225. a first fixing bolt; 323. a first winding box; 4. a brake actuator; 41. a brake cable; 42. a drive assembly; 421. a brake motor; 422. a second steering base; 4221. a second fixed seat; 42211. a second fixing hole; 4222. a second movable seat; 42221. a second arc-shaped slot; 4223. a second pulley; 4224. a second guide piece; 42241. a second through hole; 4225. a second fixing bolt; 423. and a second winding box.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

The embodiment of the application discloses vehicle auxiliary brake system. Referring to fig. 1, the auxiliary braking system includes a detection mechanism 1, a control mechanism 2, a clutch actuator 3 and a brake actuator 4, wherein:

the detection mechanism 1 is used for detecting whether an obstacle exists within a preset distance in front of the running of the vehicle or not and outputting a detection signal when the obstacle exists;

the control mechanism 2 is electrically connected with the detection mechanism 1, receives and responds to the detection signal output by the detection mechanism 1 and is used for outputting a control signal for controlling the braking of the vehicle;

the clutch actuating mechanism 3 is electrically connected with the control mechanism 2, receives and corresponds to a control signal output by the control mechanism 2, and is used for pulling down a clutch pedal;

and the brake actuating mechanism 4 is electrically connected to the control mechanism 2, receives and responds to the control signal output by the control mechanism 2, and is used for driving the brake pedal to move to brake the vehicle.

When the detection mechanism 1 detects that an obstacle exists in a preset distance range in front of the running vehicle, the control mechanism 2 receives a detection signal output by the detection mechanism 1, the control mechanism 2 outputs control signals to the clutch executing mechanism 3 and the brake executing mechanism 4 at the moment, and when the clutch executing mechanism 3 receives the control signals, the clutch executing mechanism 3 is started to pull down the clutch pedal so that the clutch pedal is treaded; when the brake actuating mechanism 4 receives the control signal, the brake actuating mechanism 4 is started to drive the brake pedal to perform brake action, and the speed of the clutch actuating mechanism 3 pulling the clutch pedal is higher than the speed of the brake mechanism pulling the brake pedal, so that when the vehicle brakes, the engine power of the vehicle is cut off, the vehicle is in a normal braking state instead of emergency braking, and the damage to the vehicle engine and a suspension system is reduced.

Referring to fig. 1 and 2, the vehicle has two driving conditions of forward and backward movement, and therefore the detection mechanism 1 includes two sets of obstacle detectors 11, the two sets of obstacle detectors 11 are respectively disposed on the head and the tail of the vehicle, the two sets of obstacle detectors 11 include at least one millimeter wave radar, the millimeter wave radar is used for detecting whether there is an object in a certain range, a preset distance of the detection mechanism 1 can be set by setting a detection distance of the millimeter wave radar, and the preset distance is preferably two meters in the present application. Similarly, the obstacle detector 11 may be other sensors for detecting whether or not an object is present, such as an infrared sensor, an acoustic wave sensor, and the like. In order that obstacle detector 11 detects the barrier that the vehicle traveles the place ahead better, when the millimeter wave radar is one, the millimeter wave radar sets up in the centre of locomotive or rear of a vehicle bumper, if the millimeter wave radar is two when more than two even, the millimeter wave radar sets up along vehicle width direction interval, for practicing thrift the cost in this application, the millimeter wave radar adopts one, and the horizontal detection angle of millimeter wave radar is greater than 120.

Referring to fig. 1 and 2, in order to prevent the vehicle from braking due to the obstacle detector 11 behind the vehicle detecting an obstacle behind the vehicle during the forward movement of the vehicle, or from braking due to the obstacle detector 11 in front of the vehicle detecting an obstacle ahead of the vehicle during the backward movement of the vehicle, the control mechanism 2 is electrically connected to an OBD module of the vehicle, and acquires the shift switch information of the vehicle through the OBD module, thereby acquiring the traveling direction of the vehicle. When the vehicle advancing direction acquired by the control mechanism 2 is forward, the obstacle detector 11 positioned on the tail of the vehicle is in a closed state, and the obstacle detector 11 positioned on the head of the vehicle is in a starting state; when the vehicle traveling direction acquired by the control mechanism 2 is backward, the obstacle detector 11 located on the vehicle head is in the off state, and the obstacle detector 11 located on the vehicle tail is in the on state.

Referring to fig. 1 and 3, in order to reduce the safety accidents caused by the fact that the driving speed of the vehicle is too high due to the irregular operation of the trainee in the driving process, the control mechanism 2 comprises a processor 21 and a vehicle speed control module 22, wherein the processor 21 is used for receiving the processing information and sending out control information according to the processed information; the vehicle speed control module 22 is used for setting the fastest running speed of the vehicle, the processor 21 obtains the running speed information of the vehicle through an OBD module of the vehicle, when the processor 21 receives that the current running speed of the vehicle is greater than the fastest running speed of the vehicle set by the vehicle speed control module 22, the processor 21 outputs a control signal for controlling braking of the vehicle, the clutch executing mechanism 3 is started to pull down the clutch pedal so that the clutch pedal is stepped, and the brake executing mechanism 4 is started to drive the brake pedal to perform brake action so that the vehicle stops, and the occurrence of collision accidents in the driving process is reduced. Since the vehicle running speed is affected by whether the current vehicle is on a slope or the current state of the vehicle's accelerator depression, the vehicle running speed information includes the rotational speed information of the engine and the vehicle speed information.

Referring to fig. 4 and 5, the clutch actuator 3 includes a pull-down rope 31 having one end fixed to the clutch pedal, and a pulling assembly 32 for driving the pull-down rope 31 to pull the clutch pedal, where the pulling assembly 32 includes a clutch motor 321 and a first steering seat 322 disposed between the clutch motor 321 and the clutch pedal, and the first steering seat 322 is configured to change a pulling direction of the pull-down rope 31 such that when the pull-down rope 31 pulls the clutch pedal, a moving direction of one end of the pull-down rope 31 connected to the clutch pedal is the same as a moving direction of the clutch pedal, so as to prevent a situation that the pulling direction of the pull-down rope 31 is different from the moving direction of the clutch pedal to cause a poor pulling effect or the pull-down rope 31 is stuck. The traction assembly 32 further includes a first winding box 323 disposed at an output end of the clutch motor 321, and when the clutch motor 321 is started, the clutch motor 321 drives the pull-down rope 31 to wind, so that the pull-down rope 31 is wound and contracted in the first winding box 323.

Referring to fig. 4 and 5, the first steering seat 322 includes a first fixed seat 3221 for being fixedly connected to a vehicle and a first movable seat 3222 rotatably disposed on the first fixed seat 3221, a first pulley 3223 is disposed on a side of the first movable seat 3222 away from the first fixed seat 3221, a first guide tab 3224 is fixedly disposed on the first movable seat 3222, a first through hole 32241 is disposed on the first guide tab 3224, an orientation of the first through hole 32241 is perpendicular to an axis of the first pulley 3223, the first through hole 32241 is located in a middle portion of the first pulley 3223, and the downward pulling rope 31 passes through the first through hole 32241 on the first guide tab 3224, then bypasses the first pulley 3223, and abuts against a circumferential outer wall of the first pulley 3223. In order to facilitate adjustment of the direction of the connection end of the pull-down rope 31 and the clutch pedal, a plurality of first arc-shaped grooves 32221 are circumferentially arranged at intervals on the first movable seat 3222, a plurality of first fixing holes 32211 are circumferentially arranged at intervals on the first fixed seat 3221, each first arc-shaped groove 32221 at least corresponds to one first fixing hole 32211, and each first arc-shaped groove 32221 corresponds to two first fixing holes 32211 in this application. The first fixing hole 32211 is threadedly connected with a first fixing bolt 3225, and after the angle between the first movable seat 3222 and the first fixing seat 3221 is adjusted, the first fixing bolt 3225 is threadedly connected with the first fixing hole 32211, at this time, a nut portion of the first fixing bolt 3225 abuts against an upper end surface of the first movable seat 3222, and the first movable seat 3222 is fixed to the first fixing seat 3221 by friction.

Referring to fig. 3 and 6, the brake actuator 4 includes a brake cable 41 with one end fixed to the brake pedal and a driving component 42 for driving the brake cable 41 to pull the brake pedal, in order to reduce the processing difficulty and the use of accessories in the present application, the structure of the brake actuator 4 is similar to that of the clutch actuator 3, that is, the structure of the brake cable 41 is the same as that of the pull-down cable 31, and the structure of the driving component 42 is similar to that of the traction component 32; and in this application the brake rope 41 and the pull-down rope 31 are preferably steel wire ropes. Wherein drive assembly 42 includes brake motor 421 and sets up the second between brake motor 421 and the brake pedal and turns to seat 422, it is unanimous with the action step of normal brake to move for guaranteeing the auxiliary brake, consequently, the output rotational speed of separation and reunion motor 321 is greater than the output rotational speed of brake motor 421, so that the separation and reunion pedal has been trampled when the brake pedal is trampled, separation and reunion motor 321 output rotational speed is preferred to be greater than 1.5 times of brake motor 421 output rotational speed in this application, and brake motor 421 and separation and reunion motor 321 all adopt direct current planet gear motor in this application.

Referring to fig. 6 and 7, since the driving assembly 42 has a structure similar to that of the pulling assembly 32 and the second steering base 422 has a function similar to that of the first steering base 322, when the pulling direction of the brake extension and retraction is changed so that the brake cable 41 moves the brake pedal, the moving direction of the end of the brake cable 41 connected to the brake pedal is the same as the moving direction of the brake pedal, so as to prevent the situation that the pulling effect is poor or the brake cable 41 is stuck due to the difference between the pulling direction of the brake cable 41 and the moving direction of the brake pedal. The brake motor 421 further includes a second winding box 423 disposed at an output end of the brake motor 421, and when the brake motor 421 is started, the brake motor 421 drives the brake rope 41 to wind, so that the brake rope 41 is wound and contracted in the first winding box 323.

Referring to fig. 6 and 7, the second steering seat 422 includes a second fixed seat 4221 for being fixedly connected with the vehicle and a second movable seat 4222 rotatably disposed on the second fixed seat 4221, one side of the second movable seat 4222, which is away from the second fixed seat 4221, is provided with a second pulley 4223, the second movable seat 4222 is fixedly provided with a second guide plate 4224, the second guide plate 4224 is provided with a second through hole 42241, the direction of the second through hole 42241 is perpendicular to the axis of the second pulley 4223, the second through hole 42241 is located in the middle of the second pulley 4223, and the brake rope 41 passes through the second through hole 42241 on the second guide plate 4224, then passes around the second pulley 4223, and abuts against the circumferential outer wall of the second pulley 4223. For the convenience of adjusting the orientation of the connecting end of the brake rope 41 and the brake pedal, the second movable seat 4222 is also circumferentially provided with a plurality of second arc-shaped grooves 42221 at intervals, the second fixed seat 4221 is circumferentially provided with a plurality of second fixing holes 42211 at intervals, each second arc-shaped groove 42221 at least corresponds to one second fixing hole 42211, the second fixing holes 42211 are in threaded connection with second fixing bolts 4225, and after the angle adjustment of the second movable seat 4222 and the second fixed seat 4221 is completed, the second steering seat 422 is fixed in the same way as the first steering seat 322.

The implementation principle of the vehicle auxiliary brake system in the embodiment of the application is as follows: in the application, when the running condition of the vehicle meets any one of the following conditions, the control mechanism 2 outputs a control signal, namely in the running process of the vehicle, the control mechanism 2 starts a corresponding obstacle detector 11 in the detection mechanism 1 according to the gear switch information of the vehicle, and when the detection mechanism 1 detects that an obstacle exists in a preset distance range in front of the running vehicle, the control mechanism 2 receives the detection signal output by the detection mechanism 1; or when the control mechanism 2 receives that the OBD module detects that the running speed of the vehicle is greater than the fastest running speed of the vehicle, the control mechanism 2 outputs control signals to the clutch executing mechanism 3 and the brake executing mechanism 4. When the clutch executing mechanism 3 and the brake executing mechanism 4 receive the control signals, the clutch executing mechanism 3 drives the clutch pedal to pull downwards, and the brake executing mechanism 4 drives the brake pedal to pull downwards, so that the vehicle is braked without flameout.

The foregoing is a preferred embodiment of the present application and is not intended to limit the scope of the application in any way, and any features disclosed in this specification (including the abstract and drawings) may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.

Claims

1. A vehicle auxiliary brake system is characterized in that: the method comprises the following steps:

the detection mechanism (1) is used for detecting whether an obstacle exists within a preset distance in front of the running of the vehicle or not and outputting a detection signal when the obstacle exists;

the control mechanism (2) is electrically connected with the detection mechanism (1), receives and responds to the detection signal output by the detection mechanism (1) and is used for outputting a control signal for controlling the braking of the vehicle;

the clutch actuating mechanism (3) is electrically connected to the control mechanism (2), receives and corresponds to a control signal output by the control mechanism (2), and is used for pulling down a clutch pedal;

and the brake actuating mechanism (4) is electrically connected to the control mechanism (2), receives and responds to the control signal output by the control mechanism (2), and is used for driving the brake pedal to move to brake the vehicle.

2. A vehicle auxiliary brake system according to claim 1, wherein: the control mechanism (2) comprises a processor (21) and a vehicle speed control module (22), wherein the processor (21) is used for receiving and processing information and outputting a control signal; the vehicle speed control module (22) is used for setting the fastest running speed of the vehicle, the processor (21) is electrically connected with the OBD module of the vehicle to acquire the running speed information of the vehicle, and when the running speed of the vehicle received by the processor (21) is greater than the fastest running speed of the vehicle, the processor (21) outputs a control signal for controlling the braking of the vehicle.

3. A vehicle auxiliary brake system according to claim 2, wherein: the detection mechanism (1) comprises two groups of obstacle detectors (11), and the two groups of obstacle detectors (11) are respectively arranged on the head and the tail of the vehicle; and the control mechanism (2) acquires vehicle gear switch information through the OBD module and is used for acquiring the traveling direction of the vehicle.

4. A vehicle auxiliary brake system according to claim 3, wherein: the horizontal detection angles of the two groups of obstacle detectors (11) are both larger than 120 degrees.

5. A vehicle auxiliary brake system according to claim 1, wherein: clutch actuator (3) include that one end is fixed in pull-down rope (31) on the clutch pedal and be used for driving pull-down rope (31) pulling clutch pedal's traction assembly (32), traction assembly (32) include clutch motor (321) and set up first turning seat (322) between clutch motor (321) and clutch pedal, first turning seat (322) are used for changing the pulling direction of pull-down rope (31) and make during pull-down rope (31) pulling clutch pedal, the direction of motion of the one end that pull-down rope (31) are connected with clutch pedal is the same with clutch pedal's direction of motion.

6. A vehicle auxiliary brake system according to claim 5, wherein: brake actuating mechanism (4) are fixed in brake pedal's brake rope (41) and are used for driving brake rope (41) pulling brake pedal's drive assembly (42) including one end, drive assembly (42) turn to seat (422) including brake motor (421) and the second that sets up between brake motor (421) and brake pedal, the second turns to the pulling direction that seat (422) are used for changing brake rope (41) and makes during brake rope (41) pulling clutch pedal, the direction of motion of the one end that brake rope (41) are connected with brake pedal is the same with brake pedal's direction of motion.

7. A vehicle auxiliary brake system according to claim 6, wherein: the output rotating speed of the clutch motor (321) is greater than that of the brake motor (421).