阅读说明：本技术 一种车辆踏板电控执行机构 (Vehicle pedal electric control actuating mechanism ) 是由 祝浪 华登科 张俊 胡守俊 于 2021-07-19 设计创作，主要内容包括：本发明公开了一种车辆踏板电控执行机构,涉及汽车电子制动控制结构领域,包括执行器,所述执行器为内置了控制电路板和齿轮减速的直流有刷电机；连杆摆臂,与所述执行器的输出轴连接；执行轴臂,垂直固定在所述连杆摆臂远离所述输出轴的一端,所述执行轴臂的轴线与所述输出轴的轴向平行；所述执行轴臂与踏板臂接触,所述执行器启动通过所述连杆摆臂使得所述执行轴臂顺时针或者逆时针旋转,以压迫驱动所述踏板臂使其运动；本方案通过执行器直接推动制动踏板,不再需要如传统方案一样进行改造制动踏板；在高速行驶遇到突发状况的情况下,在不踩离合的情况下,也可以使车辆制动停止。(The invention discloses an electric control actuating mechanism of a vehicle pedal, which relates to the field of automobile electronic brake control structures and comprises an actuator, wherein the actuator is a direct current brush motor with a built-in control circuit board and a gear for speed reduction; the connecting rod swing arm is connected with an output shaft of the actuator; the execution shaft arm is vertically fixed at one end, far away from the output shaft, of the connecting rod swing arm, and the axis of the execution shaft arm is parallel to the axial direction of the output shaft; the execution shaft arm is in contact with a pedal arm, and the actuator is started to rotate the execution shaft arm clockwise or anticlockwise through the connecting rod swinging arm so as to press and drive the pedal arm to move; the brake pedal is directly pushed by the actuator, and the brake pedal does not need to be modified like the traditional scheme; in the case where the vehicle is traveling at a high speed in an emergency, the vehicle may be braked and stopped without stepping on the clutch.)

1. An electric control actuating mechanism of a vehicle pedal is characterized by comprising

The actuator (10), the said actuator (10) is the brush motor of direct current with built-in control circuit board and gear deceleration;

a connecting rod swing arm (11) connected with an output shaft of the actuator (10);

the execution shaft arm (12) is vertically fixed at one end, far away from the output shaft, of the connecting rod swing arm (11), and the axis of the execution shaft arm (12) is parallel to the axial direction of the output shaft;

the execution shaft arm (12) is in contact with a pedal arm (100), and the actuator (10) is started to rotate the execution shaft arm (12) clockwise or anticlockwise through the connecting rod swinging arm (11) so as to press and drive the pedal arm (100) to move.

2. The electrically controlled pedal actuator according to claim 1, wherein the actuator arm (12) is sleeved with a plurality of bearings (13), and the outer end surfaces of the plurality of bearings (13) are in contact with the pedal arm (100).

3. An electrically controlled actuator for vehicle pedals according to claim 2, characterized in that a circlip (14) for preventing the bearing (13) from falling off the actuator arm (12) is mounted at the outer end of the actuator arm (12).

4. The electrically controlled vehicle pedal actuator according to claim 1, wherein a threaded hole is formed in a side surface of a position where the link swing arm (11) is connected to the output shaft of the actuator (10), and a fastening screw is locked in the threaded hole to prevent the link swing arm (11) from falling off relative to the output shaft.

5. The electrically controlled vehicle pedal actuator according to claim 1, further comprising a bracket (20) for supporting and fixing the actuator (10), wherein the actuator (10) is fixedly disposed inside the bracket (20), and the actuator (10) is fixed to the dash panel of the vehicle body through the bracket (20).

6. An electrically controlled vehicle pedal actuator according to claim 5, wherein the bracket (20) comprises a floor bracket (21) and a cover bracket (22), the floor bracket (21), the dash panel and the cover bracket (22) together form a receiving space, and the actuator (10) is fixed to the floor bracket (21) and located in the receiving space.

7. The electrically controlled vehicle pedal actuator according to claim 6, wherein the floor bracket (21) is connected to the dash panel via a back plate (23), and the back plate (23) and the dash panel are fixed by fastening nuts.

Technical Field

The invention belongs to the field of automobile electronic brake control structures, and particularly relates to a pedal electric control actuating mechanism provided for a vehicle during vehicle modification.

Background

In order to reduce the occurrence rate of vehicle accidents, related regulations such as motor vehicle operation safety technical conditions (GB 7258) and passenger car operation safety technical conditions (JT/T1094) 2016 in China require the motor vehicle to be provided with an electric control brake system.

The electric control brake system consists of a sensor, a controller and an electric control actuator. In the automotive front-loading market, this actuator is a drive-by-wire chassis hydraulic brake; in the automobile aftermarket, the actuator mainly drives the brake pedal to move and simulates the action of a driver stepping on the brake pedal.

The domestic vehicle models provided with the electric control brake actuators are still concentrated on new vehicle models which come into the market after 2015. For the old models and the models without the electric control brake actuator, with the promotion of consumption demand, the gradual maturity of technology and the trend of product price decline, the electric control brake actuator is urgently required to be additionally installed when the vehicle is refitted.

In the existing technology for additionally installing a brake actuator, a conventional method is that a steel wire pull wire is used, one end of the pull wire bypasses a brake pedal, the other end of the pull wire is wound on a motor, the pull wire is driven by the motor, and the pull wire acts on the brake pedal to pull down the brake pedal to simulate the action of a driver for pedaling the pedal; when the pedal needs to be released, the motor rotates reversely, and the pull wire returns under the action of the spring to lift the brake pedal.

The draw wire scheme has the defects that the spring can generate corresponding deformation after being used for a long time, and the effect is reduced; when a driver steps on the pedal actively, the pull wire is not recovered in time, the loose steel wire is easy to be wound with surrounding objects, and once the loose steel wire is wound, the function of the brake system can be directly influenced.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides a new technical scheme, and provides a mechanism which is simple in principle, high in reliability and strong in realizability for realizing the function of electric control brake and can avoid the risk of a wire pulling scheme for a vehicle type without a brake actuator.

The specific scheme provided by the invention is as follows:

an electrically controlled actuating mechanism for pedal of vehicle is composed of

The actuator is a direct current brush motor with a built-in control circuit board and a gear for speed reduction;

the connecting rod swing arm is connected with an output shaft of the actuator;

the execution shaft arm is vertically fixed at one end, far away from the output shaft, of the connecting rod swing arm, and the axis of the execution shaft arm is parallel to the axial direction of the output shaft;

the execution shaft arm is in contact with the pedal arm, and the actuator is started to enable the execution shaft arm to rotate clockwise or anticlockwise through the connecting rod swinging arm so as to press and drive the pedal arm to move.

Furthermore, a plurality of bearings are sleeved on the execution shaft arm, and the outer end faces of the plurality of bearings are in contact with the pedal arm.

Furthermore, an elastic retainer ring used for placing the bearing to fall off from the execution shaft arm is arranged at the outer end of the execution shaft arm.

Furthermore, a threaded hole is formed in the side face of the connecting position of the connecting rod swing arm and the output shaft of the actuator, and a fastening screw is locked in the threaded hole to prevent the connecting rod swing arm from falling off relative to the output shaft.

The actuator is fixedly arranged in the support, and the actuator is fixed with the front wall plate of the vehicle body through the support.

Furthermore, the support comprises a bottom plate support and a cover plate support, the bottom plate support, the front body panel and the cover plate support together form an accommodating space, and the actuator is fixed with the bottom plate support and is located in the accommodating space.

Furthermore, the bottom plate is connected with the front car body panel through a back plate, and the back plate is fixed with the front car body panel through a fastening nut.

The beneficial effect that adopts this technical scheme to reach does:

the brake pedal is directly pushed by the actuator, and the brake pedal does not need to be modified like the traditional scheme; in the case where the vehicle is traveling at a high speed in an emergency, the vehicle may be braked and stopped without stepping on the clutch.

The structure can be used for automatic gear vehicle types and manual gear vehicle types, does not influence the manual control function of a driver, and has strong applicability; meanwhile, the invention has the advantages of simple structure, low cost, high reliability and high operation efficiency, and can be popularized and used in large scale.

Drawings

Fig. 1 is an exploded view of an electrically controlled actuator.

Fig. 2 is a structure diagram of the cooperation of the electric control actuating mechanism and the actuating pedal mechanism.

Fig. 3 is a perspective view of a conventional general actuator pedal mechanism.

Fig. 4 is a schematic diagram of the cooperation between the electric control actuator and the actuator pedal mechanism in an unbraked state.

Fig. 5 is a schematic diagram of the cooperation between the electric control actuator and the actuator pedal mechanism in a braking state.

Wherein: 10 actuators, 11 connecting rod swing arms, 12 actuating shaft arms, 13 bearings, 14 elastic check rings, 20 supports, 21 baseplate supports, 22 cover plate supports, 23 back plates, 100 pedal arms, 101 pedal supports, 102 pedal rotating shafts, 103 brake lamp switch supports, 104 booster rotating shafts and 105 boosters.

Detailed Description

The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.

The embodiment provides an electric control actuating mechanism of a vehicle pedal, which realizes the braking force output of a brake pedal under the control of the electric control actuating mechanism; the electric control brake device can be suitable for being installed and used on most vehicles without electric control brake functions.

Specifically, referring to fig. 1-2, the electric control actuator includes an actuator 10, where the actuator 10 is a dc brush motor with a built-in control circuit board and a gear for speed reduction, and has functions of CAN communication, forward and reverse rotation, speed regulation, rotation angle control, current protection, and the like; the output shaft end of the actuator 10 is connected with a connecting rod swing arm 11, and the connecting rod swing arm 11 rotates around the output shaft when the actuator 10 is started; an execution shaft arm 12 is further fixed on the connecting rod swing arm 11, the execution shaft arm 12 is vertically fixed at one end of the connecting rod swing arm 11 far away from the output shaft, and the axis of the execution shaft arm 12 is parallel to the axial direction of the output shaft of the actuator 10; when the pedal arm 100 is installed, the actuating shaft arm 12 is ensured to be in contact with the pedal arm 100, and the actuating shaft arm 12 is rotated clockwise or anticlockwise through the connecting rod swinging arm 11 when the actuator 10 is started so as to press and drive the pedal arm 100 to move.

For convenience of understanding, the connecting rod swing arm 11 and the actuating shaft arm 12 can be understood as cam structures, and when a danger suddenly appears in front of running, the actuator 10 realizes the braking force output of the brake pedal under the control of the controller; the cam structure is driven to swing through the rotation of the output shaft, the top end of the cam structure (namely the execution shaft arm 12) is contacted with the pedal arm 100, so that the brake pedal is pressed to move downwards until the brake pedal is stepped, the actuator 10 stops rotating, and the vehicle is braked and stopped. When the danger at the front side is removed, the actuator 10 rotates reversely, the pressing braking force of the cam structure and the pedal arm 100 is removed, and the brake pedal automatically resets.

In the scheme, the actuator 10 is used for controlling the actuating shaft arm 12 to directly push the brake pedal, the traditional scheme for modifying the brake pedal is not needed, and the improvement on the modification cost and the reliability is greatly promoted.

In this embodiment, a plurality of bearings 13 are sleeved on the actuating shaft arm 12, and the outer end faces of the plurality of bearings 13 are in contact with the pedal arm 100; the bearing 13 is used for generating relative movement between the actuating shaft arm 12 and the pedal arm 100 when the actuator 10 rotates, and the friction force of the movement can be reduced through the bearing 13; in addition, as the fins of the pedal arm 100 are bent in the axial direction, in order to ensure that the bearing 13 can be always in rolling contact with the fins of the pedal arm 100 in the process of driving the brake pedal, a plurality of bearings 13 are specially used in the scheme, so that the effect of stable operation is achieved.

Optionally, a circlip 14 for preventing the bearing 13 from falling off from the actuating shaft arm 12 is installed at the outer end of the actuating shaft arm 12, and the circlip 14 plays a role in protection.

In the scheme, a threaded hole is formed in the side face of the connecting position of the connecting rod swing arm 11 and the output shaft of the actuator 10, and the connecting rod swing arm 11 is prevented from falling off relative to the output shaft of the actuator 10 by locking a fastening screw in the threaded hole; namely, the output shaft of the actuator 10 is matched with a spline mounting hole, and meanwhile, a threaded hole is formed in the side surface of the connecting rod swing arm 11, so that the connecting rod swing arm 11 can be effectively prevented from falling off from the output shaft after a set screw is locked.

In the embodiment, the vehicle body front wall assembly further comprises a bracket 20 which plays a role in fixing and supporting, the actuator 10 is fixedly arranged inside the bracket 20, and the actuator 10 is fixed with the vehicle body front wall through the bracket 20.

Specifically, the bracket 20 includes a bottom bracket 21 and a cover bracket 22, the bottom bracket 21, the dash panel of the vehicle body, and the cover bracket 22 together form an accommodating space, and the actuator 10 is fixed to the bottom bracket 21 and located in the accommodating space.

Through setting up support 20, not only be favorable to realizing that the installation between the bounding wall is fixed before executor 10 and the automobile body, can also form certain protection to executor 10, avoid the operator to touch by mistake and touch executor 10.

In the scheme, the bottom plate support 21 is connected with a front car body panel through a back plate 23, and the back plate 23 and the front car body panel are fixed through a fastening nut.

The working principle of the electric control actuating mechanism is described in detail as follows:

the electric control actuating mechanism is arranged in the intersecting area of a front panel of a vehicle body and a front floor of a passenger compartment, and is particularly positioned near a brake pedal bracket assembly. The periphery includes a clutch pedal (arrangement of a manual transmission type), a brake pedal, an accelerator pedal, a steering column steering shaft, a brake booster, a partition between the cabin and the engine room, and the like.

In the general structural principle of a brake pedal assembly of an automobile, referring to fig. 3, a pedal arm 100 of the automobile is installed inside a pedal bracket 101; the pedal arm 100 rotates about the pedal spindle 102; a torsion return spring is arranged in the pedal rotating shaft 102, so that the pedal is convenient to return when a driver looses feet. The brake light sensor is installed on the brake light switch bracket 103 for detecting a braking state. The booster rotating shaft 104 is sleeved in the two-inch position of the pedal arm 100, one end of the booster 105 is sleeved in the booster rotating shaft 104, and the other end of the booster 105 pushes the piston of the brake booster 105 to reciprocate in the cylinder. The brake pedal transmits the pedal force to the booster push rod by utilizing the labor-saving effect of the lever, and the vehicle realizes the braking function under the action of the brake booster 105.

In the scheme, referring to fig. 4, the actuator 10 is installed at the left side of the brake pedal assembly, and the actuator 10 is fixed on the bottom plate bracket 21; the cover plate holder 22 provides a fixed protection and limits the deformation and the play of the actuator 10. The base plate bracket 21 and the cover plate bracket 22 are fixed to the dash panel of the vehicle body by a back plate 23 and a fastening nut, using the screw mounting position of the original vehicle.

In the specific operation of the actuator 10, as shown in fig. 4-5, the initial position of the actuator shaft arm 12 is clockwise, and the bearing 13 is just in contact with the pedal arm 100 and does not press the pedal arm 100. When a braking instruction is triggered, the execution shaft arm 12 rotates anticlockwise under the instruction of the controller; the pedal arm 100 rotates around the pedal rotation shaft 102 under the pushing of the bearing 13, and the brake pedal moves downwards; when the brake pedal is fully depressed, the actuator 10 stops rotating, so that the brake is kept in a braking state. When the front hazard is removed, the actuator is rotated clockwise back to the home position until it is out of contact with the bearing and pedal arm 100.

According to the technical scheme, the brake pedal is directly pushed through the actuator, and the brake pedal does not need to be modified like the traditional scheme; under the condition that the vehicle runs at high speed and meets an emergency, the vehicle can be braked and stopped under the condition that the clutch is not stepped; the structure can be used for automatic gear vehicle types and manual gear vehicle types, does not influence the manual control function of a driver, and has strong applicability.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.