CN2644252Y

CN2644252Y - Auto parking brake gear

Info

Publication number: CN2644252Y
Application number: CN 03209492
Authority: CN
Inventors: 白庆军
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-09-12
Filing date: 2003-09-12
Publication date: 2004-09-29
Anticipated expiration: 2013-09-12

Abstract

The utility model relates to an automotive parking brake for motor vehicles, comprising a brake chassis, a left brake shoe, a right brake shoe and a brake push plate under prior art, as well as a actuator connected rotationally with the left brake shoe. A rotating shaft, a gag lever post and a stopper of the actuator are connected all together, and a limited gap is positioned between the gag lever post and the stopper. A plurality of switches controlled by driving operation and driving conditions are arranged in a power supply control circuit of a driving mechanism of the actuator. When the motor vehicles stop, the actuator rotates to a certain position under functions of an extension spring; convex flange of the stopper props a left bayonet of the brake push plate and the left and right brake shoes to realize automotive brake. When the motor vehicles start, the limited gap of the actuator is turned to the brake push plate by the driving mechanism to release the brake shoes on the wheel brake body in order to disarm the brake. The utility model has the advantages of realizing parking brake automation, lightening the working intensity of the driver as well as avoiding the possible manual brake mistakes.

Description

Automatic parking brake

Technical field

The utility model relates to a kind of automatic parking brake that is mainly used in self-propelled vehicle.

Background technology

Braking when having the self-propelled vehicle Parking now realizes by hand brake device, this device comprises brake handle, the handle transmission device, the braking push pedal, braking chassis and two brake straps, described brake handle connects with described brake strap by the handle transmission device, be oppositely arranged about described two brake straps, its outer rim is circular arc, the lower end is hinged with described braking chassis respectively, the below of upper end and lower end hinge-point connects the two ends of pull back spring and following pull back spring respectively, described right shoe plate top can also be provided with intermeshing adjustment (adjusting) lever of this shoe plate pivotally attached and pin pawl, be used to regulate shoe plate with the gap between the brake component on the wheel, wherein the adjustment (adjusting) lever middle part is inserted in the right-hand member bayonet socket of described braking push pedal, described left shoe plate upper end inner edge is provided with bayonet socket, this bayonet socket is plugged together mutually with the left end bayonet socket of described braking push pedal, pulling brake handle during brake, promoting two braking shoe plates expands outwardly, rely on brake strap with the mutual friction mutually of wheel bonded assembly brake component, with wheel braking, the defective of this brake equipment is to need the chaufeur manual operation, increased labour intensity, particularly, forget when occurring stopping easily to pull the hand brake for unskilled river, forget the phenomenon of RELEASE PARKINGBRAKE during driving.

The utility model content

Need manually operated defective for overcoming existing holding brake device, the utility model provides a kind of automatic parking brake, and this drg can self-actuating brake when stopping, and automatically terminates brake during driving.

The technical scheme that the utility model solves the above-mentioned technical matters of prior art is: automatic parking brake comprises the braking push pedal, braking chassis and two brake straps, be oppositely arranged about described two brake straps, its outer rim is circular arc, the lower end is hinged with described braking chassis respectively, the below of upper end and lower end hinge-point connects the two ends of pull back spring and following pull back spring respectively, described right shoe plate top is provided with hinged and intermeshing adjustment (adjusting) lever of this shoe plate and pin pawl, wherein the adjustment (adjusting) lever middle part is inserted in the right-hand member bayonet socket of described braking push pedal, described left shoe plate upper end is provided with the bayonet socket that is positioned at inner edge, also be provided with brake actuator, this actr comprises the rotating shaft that is mutually permanently connected, position-limited lever and limiting stopper, described rotating shaft is inserted on the axis hole of left shoe plate, with left shoe plate normal-running fit, described position-limited lever is positioned at the downside of limiting stopper, its side surrounds spacing breach with the limiting stopper side, the outer rim of described limiting stopper projection is curved, the upper end is connected with brake retracting spring, and the other end of this extension spring is connected in the braking push pedal.

Described brake actuator can be provided with driver train, and this driver train can comprise drive motor and the pull bar that adopts rack-and-gear to be in transmission connection with drive motor, and described pull bar connects with described position-limited lever by coupling assembly.

Described coupling assembly can comprise connecting rod, this connecting rod one end is provided with the column slide block vertical with link body, the other end is provided with the connecting rod rotating shaft of oppositely extending with described slide block, described slide block is inserted in the elongated slot of opening in the middle of the described position-limited lever, the axis hole on described braking chassis and the fixed support is passed in described connecting rod rotating shaft, be fixedly connected on an end of rocking arm, the other end of this rocking arm is by connecting pin plate one end that is articulated and connected, and the other end of connecting panel is by the hinged described pull bar of connecting pin top.

Can be provided with respectively the some switches with vehicle transmission and power-transfer clutch interlock in the power control circuit of described driver train, when change-speed box is in the starting forward gear or reverses gear and power-transfer clutch when being in connected state, described power control circuit is connected.

Described power control circuit can also be provided with the speed sensor switch in parallel with described each coupled switch, and when the self-propelled vehicle high gear was advanced, described power control circuit was by the speed sensor switch connection.

Described power control circuit can also be provided with the sudden stop switch with described speed sensor switch in parallel, and when the self-propelled vehicle sudden stop, described power control circuit is by the sudden stop switch connection.

Principle of work of the present utility model is: when self-propelled vehicle is started to walk, the power control circuit of described actuator driven mechanism by with the switch connection of change-speed box and power-transfer clutch interlock, driver train spurs pull bar inward, pull bar drives rocking arm by connecting panel and rotates; rocking arm drives position-limited lever by connecting rod and together rotates; the rotation of position-limited lever causes the unitary rotation of actr; the bayonet socket of the spacing breach alignment braking push pedal left end on actr; stop the pulling to pull bar under the driver train effect of portion's stroke change-over swith within it; and actr is rested on this position; described brake push rod under the effect of brake retracting spring to moving to left; its left end bayonet socket is inserted on the spacing breach of described actr; a left side; the upper end of right two shoe plates under the effect of last pull back spring to leaning on separating wheel brake component, releasing braking state together; When self-propelled vehicle was changed to high gear and travelled, power control circuit continued to connect by the speed sensor switch, and making voluntarily, Parking Brake continues to keep non-braking state; When the self-propelled vehicle sudden stop, power control circuit makes the non-braking state of Parking Brake continuation maintenance voluntarily, so that travelling behind the sudden stop by the sudden stop switch connection; When vehicle stops, each switch all is in off-state, the electric current of driver train is led in cut-out, driver train disappears to the application force of actr, step on the service brake pedal, two brake straps in the drg outwards open, under the effect of brake retracting spring, the actr backward rotation, the upper end of limiting stopper arc outer rim moves on to the bayonet socket place of braking push pedal left end, after unclamping the service brake pedal, the left end bayonet socket of braking push pedal is against on the limiting stopper outer rim, props up brake strap, and making it can not return, continue to be pressed on the wheel braking spare, realize the purpose of automatic parking brake thus.

Description of drawings

Fig. 1 is the structural representation that the utility model relates to main brake part;

Fig. 2 is the assembling scheme drawing that the utility model relates to actr and driver train connecting bridge;

Fig. 3 is the structural representation that the utility model relates to the driver train power control circuit.

The specific embodiment

Referring to Fig. 1, automatic parking brake comprises braking push pedal 1, braking chassis 21 (not drawing among Fig. 1) and two

brake straps

6,9, described two brake straps 6, be oppositely arranged about 9, its outer rim is circular arc, the lower end is hinged with described braking chassis respectively, the below of upper end and lower end hinge-point 8 connects the two ends of pull back spring 2 and following pull back spring 7 respectively, the upper end of described left shoe plate 6 is provided with the bayonet socket that is positioned at the inner edge place, also be provided with brake actuator, this actr comprises the all-in-one-piece rotating shaft 12 that is mutually permanently connected, position-limited lever 4 and limiting stopper 3, described rotating shaft 12 is inserted on the axis hole of left shoe plate 6, with left shoe plate 6 normal-running fiies, described position-limited lever 4 is positioned at the downside of limiting stopper 3, and its side surrounds the spacing breach 13 of actr with the limiting stopper side, and the outer rim 14 of described limiting stopper projection is curved, its upper end is connected with brake retracting spring 15, the other end of this extension spring 15 is connected in the described braking push pedal 1, and described braking push pedal 1 left end is provided with the left end bayonet socket, and right-hand member connects with left shoe plate 9.

Described right shoe plate 9 tops can be provided with intermeshing adjustment (adjusting) lever of its pivotally attached and pin pawl 11,10, and described braking push pedal 1 is that described adjustment (adjusting) lever 11 middle parts are inserted in the right-hand member bayonet socket of braking push pedal 1 with described right shoe plate 9 ways of connecting.

The stretching degree of left and right two shoe plates 11,10 can realize by the engagement position that changes adjustment (adjusting) lever and pin pawl 11,10, when described left and right shoe plate during with the excessive clearance between the wheel brake part, step on the service brake pedal, the described braking push pedal 1 promotion adjustment (adjusting) lever 11 relative pin pawls 10 that make move to right, change engagement position between the two, two shoe plates, 6,9 open degree are enlarged, reduce under the non-braking state with the distance between the wheel braking spare.

Referring to Fig. 2, described brake actuator can be provided with driver train, and this driver train can comprise drive motor 33 and the pull bar 17 that adopts the rack-and-gear mode to be in transmission connection with drive motor 33, and described pull bar 17 connects with described position-limited lever 4 by coupling assembly.

Described driver train can also be provided with the compression spring that matches with described pull bar 17, and this compression spring can be when driver train spur pull bar, and pushing drawing rod outwards moves.

Described coupling assembly can comprise connecting rod 23, this connecting rod one end is provided with the column slide block 24 vertical with its base portion, the other end is provided with the connecting rod rotating shaft 22 of oppositely extending with this slide block, described slide block 24 is inserted in the elongated slot of opening in the middle of the described position-limited lever 45, described connecting rod rotating shaft 22 pass described braking chassis 21 and with this braking chassis bonded assembly fixed support 20 on axis hole, be fixedly connected on an end of rocking arm 19, the other end of this rocking arm 19 is hinged with an end of connecting panel 18 by the mode of connecting pin 16.2, the other end of described connecting panel 18 is hinged with the top of described pull bar 17 by the mode of connecting pin 16.1, common described connecting panel 18 can be divided into a left side, right two, what help like this keeping moving is stable.

Referring to Fig. 3, the power control circuit of described driver train can be provided with the some switches with vehicle transmission and power-transfer clutch interlock, when change-speed box is in the forward gear or reverse gear and power-transfer clutch when being in coupled condition of respectively starting to walk, described power control circuit is connected by coupled switch.

Described power control circuit can be provided with the speed sensor switch in parallel with described coupled switch, and when the self-propelled vehicle high gear was advanced, described power control circuit was by the speed sensor switch connection.

Described driver train can also comprise electromagnet, this electromagnet can be positioned at same shell with described drive motor, can be provided with the stroke change-over swith on the described drive motor circuit, its input end is used to connect circumscripted power line, two mouths connect drive motor and magnet spool respectively, its on off state is subjected to the Stroke Control of described pull bar, when drive motor is moved pull bar near final position inwards, the trip conversion controling switch disconnects the connection of external source with motor coil, connect magnet coil, electromagnet produces magnetic force, holds pull bar, and it is motionless to make pull bar be fixed on the final position.

The circuit of described driver train can be provided with like this: circuit mainly comprises power supply 25, change-speed box coupled switch 26, power-transfer clutch coupled switch 32, first relay 31, second relay 30, speed sensor switch 28, sudden stop switch 27 and the driver train that constitutes by drive motor 33 and electromagnet 29, wherein said change-speed box coupled switch 26 is looked different motor vehicle model and is provided with several starting forward gears and the interlock mouth 26.1 that reverses gear, 26.2 and 26.3 (the starting forward gear interlock mouth shown in Fig. 3 has two, be labeled as 26.1,26.2), the mouth of described power supply 25 connects the first relay input end 31.1, first relay output end 31.3 connects the power input 33.1 of driver train, constituted article one electric power loop of driver train thus, described power input also connects the input end 26.4 of change-speed box coupled switch, the forward gear interlock mouth 26.1 of respectively starting to walk of described change-speed box coupled switch, 26.2 connect the input end 32.2 of power-transfer clutch coupled switch, described power-transfer clutch coupled switch mouth 32.1 connects the actuating coil point of connection 31.2 of first relay, the article one that has constituted first relay 31 thus starts the loop, the interlock mouth 26.3 that reverses gear of described change-speed box coupled switch equally also connects the input end 32.2 of power-transfer clutch coupled switch, the second that has constituted first relay 31 thus starts the loop, described power supply 25 mouths connect the actuating coil point of connection 31.2 of first relay by described speed sensor switch 28, the 3rd that has constituted first relay 31 thus starts the loop, described sudden stop switch 27 is with described speed sensor switch 28 parallel connections, by being connected of this sudden stop switch 27 and power supply 25 mouths and the first relay actuating coil point of connection 31.2, the 4th that has constituted first relay 31 starts the loop, the interlock mouth 26.3 that reverses gear of described change-speed box coupled switch 26 also connects the input end 30.1 of described second relay 30, the mouth 30.3 of second relay connects the power input 33.1 of described driver train, constituted thus by the second electric power loop of power supply 25 to driver train, the mouth of described power-transfer clutch coupled switch also connects the actuating coil point of connection 30.2 of second relay, constituted second relay 30 thus and started the loop through article one that the described interlock mouth 26.3 that reverses gear forms, the mouth 30.3 of described second relay also connects the actuating coil point of connection 30.2 of self, constituted second relay 30 thus and started the loop through the second that the described interlock mouth 26.3 that reverses gear forms, for guaranteeing the one-way of line related electric current, can be at the described interlock mouth 26.3 that reverses gear to power-transfer clutch coupled switch input end 32.2, power-transfer clutch coupled switch mouth 32.1 is to the first relay actuating coil point of connection 31.2, power-transfer clutch coupled switch mouth 32.1 is to the second relay actuating coil point of connection 30.2, second relay output end 30.3 can be provided with unilateral diode to the power input 33.1 of driver train and second relay output end 30.3 on the line of self actuating coil point of connection 30.2.

The mode of operation of described switch is: described speed sensor switch is disconnection in 0 o'clock in the speed of a motor vehicle, connect greater than 0 o'clock in the speed of a motor vehicle, described power-transfer clutch coupled switch disconnects when pedal of clutch is depressed, lift to make when making wheel movement or producing movement tendency at pedal of clutch and connect with input end with corresponding starting forward gear of power-transfer clutch place gear or the interlock mouth that reverses gear, described sudden stop switch does not change but vehicle body is connected during to front slide at wheel, disconnects under all the other situations.

The principle of work of sort circuit is: when self-propelled vehicle by starting forward gear (being generally 1 retaining or 2 retainings) when starting, the change-speed box coupled switch is connected its input end with corresponding starting forward gear interlock mouth, when lifting power-transfer clutch, the power-transfer clutch coupled switch is connected, article one of connecting described first relay thus starts the loop, first relay is connected, power supply is powered to driver train by described article one electric power loop, make driver train energising work, remove the braking state of automatic parking brake gear, self-propelled vehicle is able to cruising; After hanging up high gear in travelling, input end in the change-speed box coupled switch disconnects with starting forward gear interlock mouth, article one of cutting off described first relay starts loop current, but speed sensor switch connection, the 3rd of described first relay starts the loop connection, makes power supply continue to power to driver train by described article one electric power loop; When sudden stop, the sudden stop switch starts the loop with the 4th of first relay to be connected, and keeps the on-state of first relay constant, avoids autobrake in the sudden stop, with guarantee vehicle behind the sudden stop continue travel; During parking, step on power-transfer clutch, the loop that respectively starts of first relay all disconnects, and driver train disappears to the application force of described pull bar, steps on the service brake pedal, can make the automatic parking brake device autobrake; During reversing, hang up backward gear, the input end of change-speed box coupled switch is connected with the interlock mouth that reverses gear, power supply can be powered to driver train by described second source loop under the situation that second relay is connected, when lifting power-transfer clutch, article one of second relay starts the loop and connects, second relay is connected, driver train energising work, second relay output end makes the second of second relay start the loop connection, even at this moment constantly step on power-transfer clutch to its actuating coil point of connection power supply simultaneously, or making power-transfer clutch constantly be in unsettled half-clutch state, driver train still can normal operation.

Element, each interelement connection mode and each element such as described change-speed box coupled switch, power-transfer clutch coupled switch, speed sensor switch, sudden stop switch, first relay, second relay all can adopt prior art or other possible technology of any suitable with the fit system of self-propelled vehicle associated components.

Claims

1, a kind of automatic parking brake, comprise the braking push pedal, braking chassis and two brake straps, be oppositely arranged about described two brake straps, its outer rim is circular arc, the lower end is hinged with described braking chassis respectively, the below of upper end and lower end hinge-point connects the two ends of pull back spring and following pull back spring respectively, the upper end of described left shoe plate is provided with the bayonet socket that is positioned at the inner edge place, it is characterized in that described left shoe plate upper end also is provided with brake actuator, this actr comprises the all-in-one-piece rotating shaft that is mutually permanently connected, position-limited lever and limiting stopper, described rotating shaft is inserted on the axis hole of left shoe plate, with left shoe plate normal-running fit, described position-limited lever is positioned at the downside of limiting stopper, and its side surrounds the spacing breach of actr with the limiting stopper side, and the outer rim of described limiting stopper projection is curved, its upper end is connected with brake retracting spring, the other end of this extension spring is connected in the described braking push pedal, and described braking push pedal left end is provided with the left end bayonet socket, and right-hand member connects with left shoe plate.

2, automatic parking brake as claimed in claim 1, it is characterized in that described brake actuator is provided with driver train, this driver train comprises drive motor and the pull bar that adopts the rack-and-gear mode to be in transmission connection with drive motor, and described pull bar connects with described position-limited lever by coupling assembly.

3, automatic parking brake as claimed in claim 2, it is characterized in that described driver train also comprises electromagnet, this electromagnet is positioned at same shell with described drive motor, described drive motor circuit is provided with the stroke change-over swith, its input end is used to connect circumscripted power line, two mouths connect drive motor and magnet spool respectively, its on off state is subjected to the Stroke Control of described pull bar, when drive motor is moved pull bar near final position inwards, the trip conversion controling switch disconnects the connection of external source with motor coil, connects magnet coil.

4, automatic parking brake as claimed in claim 3, it is characterized in that described coupling assembly comprises connecting rod, this connecting rod one end is provided with the column slide block vertical with its base portion, the other end is provided with the connecting rod rotating shaft of oppositely extending with this slide block, described slide block is inserted in the elongated slot of opening in the middle of the described position-limited lever, described connecting rod rotating shaft pass described braking chassis and with this braking chassis bonded assembly fixed support on axis hole, be fixedly connected on an end of rocking arm, the other end of this rocking arm is hinged with an end of connecting panel by the mode of connecting pin, and the other end of described connecting panel is hinged with the top of described pull bar by the mode of connecting pin.

5, as claim 2,3 or 4 described automatic parking brakes, the power control circuit that it is characterized in that described driver train is provided with the some switches with vehicle transmission and power-transfer clutch interlock, when change-speed box is in the forward gear or reverse gear and power-transfer clutch when being in coupled condition of respectively starting to walk, described power control circuit is connected by coupled switch.

6, automatic parking brake as claimed in claim 5 is characterized in that described power control circuit is provided with the speed sensor switch in parallel with described coupled switch, and when the self-propelled vehicle high gear was advanced, described power control circuit was by the speed sensor switch connection.

7, automatic parking brake as claimed in claim 6 is characterized in that described power control circuit also is provided with the sudden stop switch with described speed sensor switch in parallel, and when the self-propelled vehicle sudden stop, described power control circuit is by the sudden stop switch connection.

8, as claim 2,3 or 4 described automatic parking brakes, the power control circuit that it is characterized in that described driver train is provided with like this: circuit mainly comprises power supply, the change-speed box coupled switch, the power-transfer clutch coupled switch, first relay, second relay, the speed sensor switch, sudden stop switch and the driver train that constitutes by drive motor and electromagnet, wherein said change-speed box coupled switch is provided with several starting forward gears and the interlock mouth that reverses gear, the mouth of described power supply connects the first relay input end, first relay output end connects the power input of driver train, constituted article one electric power loop of driver train thus, described power input also connects the input end of change-speed box coupled switch, the forward gear interlock mouth of respectively starting to walk of described change-speed box coupled switch connects the input end of power-transfer clutch coupled switch, described power-transfer clutch coupled switch mouth connects the actuating coil point of connection of first relay, the article one that has constituted first relay thus starts the loop, the interlock mouth that reverses gear of described change-speed box coupled switch equally also connects the input end of power-transfer clutch coupled switch, the second that has constituted first relay thus starts the loop, described power output end connects the actuating coil point of connection of first relay by described speed sensor switch, the 3rd that has constituted first relay thus starts the loop, described sudden stop switch is with described speed sensor switch in parallel, by being connected of this sudden stop switch and the power output end and the first relay actuating coil point of connection, the 4th that has constituted first relay starts the loop, the interlock mouth that reverses gear of described change-speed box coupled switch also connects the input end of described second relay, the mouth of second relay connects the power input of described driver train, constituted thus by the second electric power loop of power supply to driver train, the mouth of described power-transfer clutch coupled switch also connects the actuating coil point of connection of second relay, constituted second relay thus and started the loop through article one that the described interlock mouth that reverses gear forms, the mouth of described second relay also connects the actuating coil point of connection of self, constituted second relay thus and started the loop through the second that the described interlock mouth that reverses gear forms, at the described interlock mouth that reverses gear to power-transfer clutch coupled switch input end, power-transfer clutch coupled switch mouth is to the first relay actuating coil point of connection, power-transfer clutch coupled switch mouth is to the second relay actuating coil point of connection, second relay output end is provided with unilateral diode to the power input of driver train and second relay output end on the line of self actuating coil point of connection, described speed sensor switch is disconnection in 0 o'clock in the speed of a motor vehicle, connect greater than 0 o'clock in the speed of a motor vehicle, described power-transfer clutch coupled switch disconnects when pedal of clutch is depressed, lift to make when making wheel movement or producing movement tendency at pedal of clutch and connect with input end with corresponding starting forward gear of power-transfer clutch place gear or the interlock mouth that reverses gear, described sudden stop switch does not change but vehicle body is connected during to front slide at wheel, disconnect under all the other situations, when vehicle transmission in starting during forward gear, the change-speed box coupled switch is connected its input end with corresponding starting forward gear interlock mouth, when lifting power-transfer clutch, the power-transfer clutch coupled switch is connected, article one of connecting described first relay thus starts the loop, first relay is connected, and power supply is powered to driver train by described article one electric power loop; After vehicle transmission hangs up high gear, input end in the change-speed box coupled switch disconnects with starting forward gear interlock mouth, article one of cutting off described first relay starts loop current, when the speed sensor switch connection, the 3rd of described first relay starts the loop connection, and power supply continues to power to driver train by described article one electric power loop; When sudden stop, the sudden stop switch is connected the 4th startup loop of first relay, keeps the on-state of first relay constant; During parking, step on power-transfer clutch, the loop that respectively starts of first relay all disconnects, and first electric power loop disconnects; When self-propelled vehicle hangs up backward gear, the input end of change-speed box coupled switch is connected with the interlock mouth that reverses gear, when lifting power-transfer clutch, article one of second relay starts the loop and connects, power supply is powered to driver train by described second source loop, after second relay is connected, second relay output end is to its actuating coil point of connection power supply, make the second startup loop of second relay also be in on-state, at this moment no matter which kind of state the power-transfer clutch coupled switch is in, and power supply is all powered to driver train by described second source loop.