CN220594882U

CN220594882U - Parking device, system and vehicle

Info

Publication number: CN220594882U
Application number: CN202322408945.4U
Authority: CN
Inventors: 赵敬为; 孙晖云; 杨瑞; 王东旭; 高梦桥; 张仕钊
Original assignee: Great Wall Motor Co Ltd
Current assignee: Great Wall Motor Co Ltd
Priority date: 2023-09-05
Filing date: 2023-09-05
Publication date: 2024-03-15
Anticipated expiration: 2033-09-05

Abstract

The application provides a parking device, system and vehicle, and the device is applied to vehicle control technical field, and the device includes: brake caliper, calliper motor, drive mechanism and locking mechanism. The transmission mechanism is connected with the brake calipers and the caliper motor and is used for transmitting the target braking force to the brake calipers during braking or parking, so that the brake calipers are clamped under force during braking or parking; the locking mechanism is connected with the transmission mechanism, and the transmission mechanism is clamped after the brake calipers are clamped under force, so that the brake calipers are locked, and parking is completed. The device can utilize same set brake caliper and calliper motor to realize braking and parking, need not to additionally arrange parking motor and relevant device, can effectively reduce the required device of parking, reduces whole car braking cost and subsequent maintenance cost, practices thrift the space of arranging.

Description

Parking device, system and vehicle

Technical Field

The present disclosure relates to the field of vehicle control, and in particular, to a parking device, a parking system, and a vehicle.

Background

With the rapid development of sensor and network communication technologies, the level of automobile electronics and intellectualization is greatly improved, and a wire control technology is in the automobile field, wherein the wire control technology refers to the technology of hard connection by an electric signal transmission control instead of the traditional mechanical connection device, so that control is realized.

The vehicle brake system is developed into brake-by-wire, mechanical connection between a brake pedal and a brake is canceled, and a brake control unit processes an electronic signal and controls a brake actuating mechanism to output a braking force to complete braking and parking.

Because the drive-by-wire removes the mechanical connection, there is no oil pipe in the drive-by-wire chassis of the vehicle, and therefore, the related art generally realizes the parking function by adding an independent electronic parking motor and a transmission mechanism, and the problems of high braking cost of the whole vehicle and the like exist.

Disclosure of Invention

The application provides a parking device, system and vehicle, the device can utilize same set brake caliper and calliper motor to realize braking and parking, need not to additionally arrange parking motor and relevant device, can effectively reduce the required device of parking, reduces whole car braking cost and subsequent maintenance cost, practices thrift and arranges the space.

In a first aspect, there is provided a parking apparatus including: a brake caliper and a caliper motor outputting a target braking force at the time of braking or parking; the transmission mechanism is connected with the brake calipers and the caliper motor and transmits target braking force to the brake calipers when the brake calipers are braked or parked, so that the brake calipers are stressed and clamped when the brake calipers are parked; and the locking mechanism is connected with the transmission mechanism, and is used for clamping the transmission mechanism after the brake calipers are stressed and clamped to lock the brake calipers, so that parking is completed.

Through above-mentioned technical scheme, because drive mechanism can transmit the power of calliper motor to brake calliper, consequently, can make brake calliper press from both sides tightly through drive mechanism transmission braking force when parking, and chucking drive mechanism after pressing from both sides tightly, because unable transmission power after the drive mechanism chucking, consequently can indirect locking brake calliper realize the parking, thereby this application embodiment can utilize same set brake calliper and calliper motor to realize braking and parking, need not to additionally arrange parking motor and relevant device, can effectively reduce the required device of parking, reduce whole car braking cost and subsequent maintenance cost, practice thrift and arrange the space.

With reference to the first aspect, in some possible implementations, the locking mechanism includes: an electromagnetic member; a pushrod mechanically coupled to the electromagnetic member; and the locking piece is mechanically connected with the push rod and clamps the transmission mechanism after the brake caliper is clamped under the stress.

Through above-mentioned technical scheme, the embodiment of the application can utilize the locking piece locking brake caliper in the locking mechanism, realizes stabilizing the parking.

With reference to the first aspect and the foregoing implementation manner, the locking mechanism further includes: and the return piece is mechanically connected with the locking piece and returns the locking piece to a preset initial position when the parking is released.

Through the technical scheme, the return piece of this application embodiment can control the locking piece to withdraw when the parking is released, stops the parking.

With reference to the first aspect and the foregoing implementation manner, the brake caliper includes: a ball screw mechanism mechanically coupled to the transmission mechanism; a brake cylinder piston mechanically coupled to the ball screw mechanism; a friction block mechanically coupled to the brake cylinder piston; and the caliper body is mechanically connected with the friction block.

With reference to the first aspect and the foregoing implementation manners, in some possible implementation manners, the transmission mechanism includes: the first transmission piece is mechanically connected with the caliper motor, and the locking mechanism locks the brake caliper by clamping the first transmission piece; a second transmission member mechanically coupled to the first transmission member; and a third transmission member mechanically coupled to the second transmission member and the ball screw mechanism.

With reference to the first aspect and the foregoing implementation manner, in some possible implementation manners, the first transmission member includes: a first spindle mechanically coupled to the caliper motor; the first gear and the second gear are arranged on the first rotating shaft, and the locking mechanism locks the brake caliper by clamping the first gear.

With reference to the first aspect and the foregoing implementation manner, in some possible implementation manners, the second transmission member includes: a second rotating shaft; and the third gear and the fourth gear are arranged on the second rotating shaft, and the third gear is meshed with the second gear.

With reference to the first aspect and the foregoing implementation manner, in some possible implementation manners, the third transmission member includes: a third rotating shaft mechanically connected to the ball screw mechanism; and the fifth gear is arranged on the third rotating shaft, and is meshed with the fourth gear.

In a second aspect, there is provided a parking system comprising: the parking device according to any one of the above-described implementations; the first actuator is connected with the caliper motor; a second actuator coupled to the locking mechanism; a parking switch for sending a parking request; and the controller is respectively connected with the parking switch, the first actuator and the second actuator, the controller sends a parking instruction to the first actuator and a locking instruction to the second actuator based on the parking request, the first actuator controls the caliper motor to output torque based on the parking instruction, and the second actuator controls the locking mechanism to execute a locking action based on the locking instruction.

In a third aspect, there is provided a vehicle comprising a parking system as described in the second aspect above.

Drawings

Fig. 1 is a block schematic diagram of a parking apparatus according to an embodiment of the present utility model;

fig. 2 is a schematic diagram showing a detailed structure of a parking device according to an embodiment of the present utility model;

FIG. 3 is a block schematic diagram of a parking system according to an embodiment of the present utility model;

FIG. 4 is a schematic diagram of control logic 1 of a parking system according to an embodiment of the present utility model;

fig. 5 is a control flow chart of a parking system according to an embodiment of the present utility model;

fig. 6 is a schematic control logic diagram 2 of a parking system according to an embodiment of the present utility model.

Detailed Description

The technical solutions in the present application will be clearly and thoroughly described below with reference to the accompanying drawings. Wherein, in the description of the embodiments of the present application, "/" means or is meant unless otherwise indicated, for example, a/B may represent a or B: the text "and/or" is merely an association relation describing the associated object, and indicates that three relations may exist, for example, a and/or B may indicate: the three cases where a exists alone, a and B exist together, and B exists alone, and in addition, in the description of the embodiments of the present application, "plural" means two or more than two.

The terms "first," "second," and the like, are used below for descriptive purposes only and are not to be construed as implying or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature.

Fig. 1 is a schematic block diagram of a parking device according to an embodiment of the present application.

For example, as shown in fig. 1, the parking apparatus 101 may include: brake caliper 100, caliper motor 200, locking mechanism 300, and transmission 400.

Wherein, the caliper motor 200 outputs a target braking force when braking or parking, and the transmission mechanism 400 connects the brake caliper 100 and the caliper motor 200 for transmitting the target braking force when braking or parking, so that the brake caliper 100 is clamped under force when braking or parking; the locking mechanism 300 is connected with the transmission mechanism 400, and the transmission mechanism 400 is clamped after the brake caliper 100 is clamped by force, so that the brake caliper 100 is locked, and parking is completed.

According to the embodiment of the application, after a parking or braking request is received, a control instruction is sent to the parking device 101, the caliper motor 200 is controlled to output a target braking force according to the control instruction, the target braking force is transmitted to the brake caliper 100 through the transmission mechanism 400, so that the brake caliper is stressed and clamped during parking or braking, and after the brake caliper 100 is clamped, the transmission mechanism 400 is clamped by the locking mechanism 300, so that the clamped brake caliper 100 is locked to finish parking. Thus, the brake caliper 100 is driven by the caliper motor 200 to output braking force, the response is rapid, no hydraulic oil pipeline exists, and the device has a simple structure and is easy to maintain.

According to one embodiment of the present application, locking mechanism 300 includes: the device comprises an electromagnetic part, a push rod, a locking part and a return part.

The electromagnetic part can be an electromagnet, a spiral spring is arranged in the electromagnet, and the locking part can be a pawl. As shown in fig. 2, the push rod is mechanically connected with the electromagnetic member 1; the locking member 2 is mechanically connected to the push rod, and the locking member 2 clamps the transmission mechanism 400 after the brake caliper 100 is clamped by force. The return element is mechanically connected to the locking element 2 for returning the locking element 2 to a predetermined initial position when the parking is released. The preset initial position may be a position before parking.

According to one embodiment of the present application, the brake caliper 100 includes: ball screw mechanism 11, brake cylinder piston, friction block, caliper body.

Wherein the ball screw mechanism 11 is mechanically connected with the transmission mechanism 400; the brake cylinder piston is mechanically connected with the ball screw mechanism 11; the friction block is mechanically connected with the brake cylinder piston; the caliper body is mechanically connected with the friction block.

Further, the transmission mechanism 400 includes: the first transmission piece, the second transmission piece and the third transmission piece.

Wherein, first driving medium is connected with calliper motor 200 machinery, and locking mechanism 300 realizes the locking of brake caliper 100 through chucking first driving medium, as shown in fig. 2, and first driving medium includes: a first rotating shaft 4, a first gear 3 and a second gear 5, wherein the first rotating shaft 4 is mechanically connected with the caliper motor 200; the first gear 3 and the second gear 5 are disposed on the first rotation shaft 4, and the locking mechanism 300 realizes locking of the brake caliper 100 by clamping the first gear 3.

The second transmission member is mechanically coupled to the first transmission member, as shown in fig. 2, the second transmission member comprising: a second rotation shaft 8, a third gear 7 and a fourth gear 9. Wherein, third gear 7 and fourth gear 9 set up on second pivot 8, third gear 7 and second gear 5 meshing.

The third transmission member is mechanically connected to the second transmission member and the ball screw mechanism 11, and as shown in fig. 2, the third transmission member includes: a third rotary shaft 10 and a fifth gear 12. Wherein the third rotating shaft 10 is mechanically connected with the ball screw mechanism 11; the fifth gear 12 is disposed on the third rotating shaft 10, and the fifth gear 12 is meshed with the fourth gear 9.

In sum, the parking device of this application embodiment can multiplexing calliper motor and the braking calliper that realizes braking function and realize the parking, because drive mechanism can transmit the power of calliper motor to braking calliper, consequently can make braking calliper press from both sides tightly through drive mechanism transmission braking force when parking to after braking calliper presss from both sides tightly, utilize locking mechanism chucking drive mechanism, because unable transmission power behind the drive mechanism chucking, consequently can realize parking by indirect locking braking calliper, thereby can utilize same set of braking calliper and calliper motor to realize braking and parking, need not to additionally arrange parking motor and relevant device, can effectively reduce the required device of parking, reduce whole car braking cost and subsequent maintenance cost, practice thrift and arrange the space.

Fig. 3 is a schematic structural diagram of a parking system according to an embodiment of the present application.

For example, as shown in fig. 3, the parking system 20 may include: parking device 101, controller 500, first actuator 600, second actuator 700, and parking switch 800.

The parking switch 800 is used for sending a parking request, and the first actuator 600 is connected with the caliper motor 200; the second actuator 700 is connected to the locking mechanism 300; the controller 500 is connected to the parking switch 800, the first actuator 600 and the second actuator 700, respectively, and transmits a parking instruction to the first actuator 600 and a locking instruction to the second actuator 700 based on a parking request, the first actuator 600 controls the caliper motor 200 to output torque based on the parking instruction, and the second actuator 700 controls the locking mechanism 300 to perform a locking action based on the locking instruction.

It can be appreciated that the parking switch 800 in the embodiment of the present application is configured to issue a parking request, for example, pressing the parking switch 800 may indicate the parking request; releasing the park switch 800 may indicate a park release request. Further, as shown in fig. 4, the embodiment of the present application may implement the clamping function of the brake caliper 100 according to the driving state of the wheel speed of the vehicle, the intention of the driver, and the collected related signals (such as the wheel speed signal, the longitudinal acceleration signal ax, etc.) of each sensor, and during the clamping process of the brake caliper 100, control the caliper motor 200 to output the target braking force to clamp the brake caliper 100 through the first actuator 600, and control the locking mechanism 300 to perform the locking stop through the second actuator 700, thereby implementing the parking function. The first actuator 600 may be a motor brake actuator, and the second actuator 700 may be an electromagnet actuator.

It should be noted that, the electronic parking function is based on a control function in a static state of the whole vehicle, and the embodiment of the application first determines whether the electronic parking function state is available, for example, the electronic parking function state may be determined by a function switch signal, a clamping force signal, an electromagnet signal, and other vehicle states, and under the condition that the electronic parking function state is determined to be operable, the electronic parking function may implement clamping and releasing of the brake caliper 100 according to the intention of the driver.

The following details the control flow of the parking system according to the embodiment of the present application in conjunction with fig. 5, including the following steps:

step one: pressing electronic parking switch 800, indicating a parking request; or releases the electronic park switch 800, indicating a park release request.

Step two: the controller 500 collects vehicle status signals.

Step three: the controller 500 performs a logic operation according to the received vehicle state signal and issues a control instruction.

Step four: the motor brake actuator receives the control command to control the caliper motor 200, and if the control command is a parking command, the fifth step is executed, and if the control command is a parking release command, the sixth step is executed.

Step five: the caliper motor 200 outputs a target braking force according to a parking instruction, the transmission mechanism 400 transmits the target braking force, so that the brake caliper 100 is stressed to clamp wheels, the electromagnet actuator controls the electromagnet release pawl to clamp a gear, the gear is prevented from rotating, and parking is completed;

step six: the electromagnet actuator controls the electromagnet to retract the pawl, and the brake caliper 100 releases the wheel, completing the parking release.

Further, the two aspects of parking clamp and parking release of the embodiment of the present application may be separately described in connection with the control method shown in fig. 6.

1. Parking clamp

(1) The electronic parking switch 800 is pressed to indicate a parking request.

(2) After the controller 500 receives the function start signal, relevant signals are collected through each sensor, for example (a wheel speed sensor collects a wheel speed signal, a motor angle sensor collects a motor angle signal, etc.).

(3) The controller 500 performs a logical operation on the received related signal, and when a plurality of conditions including zero wheel speed, a released state of the electromagnet 1, and a released accelerator pedal (if the brake disc temperature is higher than a limit value, a prompt is given) are satisfied, a parking instruction is sent to the motor brake actuator, a lock instruction is sent to the electromagnet actuator, the motor brake actuator controls the caliper motor 200 to output a target braking force, and the electromagnet actuator controls the locking mechanism 300 to perform a locking operation.

(4) The caliper motor 200 operates to transmit power to the ball screw mechanism 11 through the first gear 3, the second gear 5, the third gear 7, the fourth gear 9 and the fifth gear 12, the ball screw is driven by rotation of the ball nut to do linear motion, the brake cylinder piston is pushed, the friction block is pressed against the brake disc, the brake caliper 100 is clamped, and after the brake caliper 100 is clamped, the electromagnet 1 releases the pawl 2 to lock the first gear 3 so as to prevent rotation, and parking is completed.

2. Parking release

(1) The electronic parking switch 800 is released indicating a parking release request.

(2) After receiving the function-off signal, the controller 500 collects the relevant signals through the sensors.

(3) The controller 500 performs a logical operation on the received signal, and when a plurality of conditions in which the four wheel speed is zero, the electromagnet 1 is in a clamped state, and the accelerator pedal is depressed are satisfied, transmits a parking release instruction to the motor brake actuator, and transmits a lock release instruction to the electromagnet actuator, which controls the lock mechanism 300 to perform a release operation based on the lock release instruction.

(4) The electromagnet 1 is retracted, the pawl 2 releases the first gear 3, the caliper motor 200 operates through the transmission mechanism 400 to cause the ball screw mechanism 11 to retract the brake cylinder piston, the brake caliper 100 is released, and the parking is released.

In summary, the parking system can utilize the parking switch to send out the parking request, and the controller sends out parking instruction and locking instruction according to the parking request of receiving to carry out braking instruction control calliper motor output torque through first executor, the second executor carries out locking instruction control locking mechanism and carries out locking action and accomplish the parking. Therefore, parking is achieved through multiplexing the brake calipers and the caliper motors which achieve the braking function, the parking motors and related devices are not required to be additionally arranged, devices required by parking can be effectively reduced, the braking cost of the whole vehicle and the subsequent maintenance cost are reduced, and the arrangement space is saved.

In addition, the embodiment of the application also protects a vehicle, and the vehicle can comprise the parking system according to the embodiment.

It will be appreciated by those skilled in the art that, for convenience and brevity of description, only the above-described division of the functional modules is illustrated, and in practical application, the above-described functional allocation may be performed by different functional modules according to needs, i.e. the internal structure of the apparatus is divided into different functional modules to perform all or part of the functions described above.

In the embodiments provided in the present application, it should be understood that the disclosed apparatus may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of modules or units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another apparatus, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A parking apparatus, characterized in that the parking apparatus comprises:

a brake caliper and a caliper motor outputting a target braking force at the time of braking or parking;

the transmission mechanism is connected with the brake calipers and the caliper motor and transmits target braking force to the brake calipers when the brake calipers are braked or parked, so that the brake calipers are stressed and clamped when the brake calipers are parked;

and the locking mechanism is connected with the transmission mechanism, and is used for clamping the transmission mechanism after the brake calipers are stressed and clamped to lock the brake calipers, so that parking is completed.

2. A parking device as defined in claim 1, wherein the locking mechanism includes:

an electromagnetic member;

a pushrod mechanically coupled to the electromagnetic member;

and the locking piece is mechanically connected with the push rod and clamps the transmission mechanism after the brake caliper is clamped under the stress.

3. The parking device according to claim 2, wherein the locking mechanism further includes:

and the return piece is mechanically connected with the locking piece and returns the locking piece to a preset initial position when the parking is released.

4. Parking device according to claim 1, characterized in that the brake caliper comprises:

a ball screw mechanism mechanically coupled to the transmission mechanism;

a brake cylinder piston mechanically coupled to the ball screw mechanism;

a friction block mechanically coupled to the brake cylinder piston;

and the caliper body is mechanically connected with the friction block.

5. A parking apparatus as defined in claim 4, wherein said transmission mechanism includes:

the first transmission piece is mechanically connected with the caliper motor, and the locking mechanism locks the brake caliper by clamping the first transmission piece;

a second transmission member mechanically coupled to the first transmission member;

and a third transmission member mechanically coupled to the second transmission member and the ball screw mechanism.

6. A parking apparatus as defined in claim 5, wherein the first transmission member includes:

a first spindle mechanically coupled to the caliper motor;

the first gear and the second gear are arranged on the first rotating shaft, and the locking mechanism locks the brake caliper by clamping the first gear.

7. A parking apparatus as defined in claim 6, wherein said second transmission member includes:

a second rotating shaft;

and the third gear and the fourth gear are arranged on the second rotating shaft, and the third gear is meshed with the second gear.

8. A parking apparatus as defined in claim 7, wherein said third transmission member includes:

a third rotating shaft mechanically connected to the ball screw mechanism;

and the fifth gear is arranged on the third rotating shaft, and is meshed with the fourth gear.

9. A parking system, the system comprising:

the parking apparatus according to any one of claims 1 to 8;

the first actuator is connected with the caliper motor;

a second actuator coupled to the locking mechanism;

a parking switch for sending a parking request;

and the controller is respectively connected with the parking switch, the first actuator and the second actuator, the controller sends a parking instruction to the first actuator and a locking instruction to the second actuator based on the parking request, the first actuator controls the caliper motor to output target torque based on the parking instruction, and the second actuator controls the locking mechanism to execute locking action based on the locking instruction.

10. A vehicle comprising a parking system as claimed in claim 9.