阅读说明：本技术 一种可变传动比的线控自动车门 (Drive-by-wire automatic door with variable transmission ratio ) 是由 马跃龙 刘立军 黄斌 谢宁 仲文诗 于 2020-05-07 设计创作，主要内容包括：本发明公开了一种可变传动比的线控自动车门,包括固定在汽车车架上的承载板、安装在承载板上的且可在承载板上左右滑动的电机、与电机的一端相连的主动轮、钢带、锥面轮、带轮、同步带、右夹板、左夹板、右导柱、左导柱、左滑筒、右滑筒、光杆、左携门架、右携门架、左门板、右门板、开关以及ECU。本发明可变传动比的线控自动车门中,ECU21可接收开关门信号,控制电机转动,电机的力矩通过主动轮、钢带、锥面轮、带轮传递到同步带,同步带将旋转运动转换成直线运动,带动左右导柱、左右滑筒、左右携门架、左右门板运动,实现门的打开与关闭动作。(The invention discloses a drive-by-wire automatic vehicle door with variable transmission ratio, which comprises a bearing plate fixed on a vehicle frame, a motor which is arranged on the bearing plate and can slide left and right on the bearing plate, a driving wheel connected with one end of the motor, a steel belt, a conical wheel, a belt wheel, a synchronous belt, a right clamping plate, a left clamping plate, a right guide pillar, a left sliding cylinder, a right sliding cylinder, a polished rod, a left door carrying frame, a right door carrying frame, a left door plate, a right door plate, a switch and an ECU. In the drive-by-wire automatic vehicle door with variable transmission ratio, the ECU21 can receive a door opening and closing signal to control the motor to rotate, the torque of the motor is transmitted to the synchronous belt through the driving wheel, the steel belt, the conical wheel and the belt wheel, the synchronous belt converts the rotary motion into linear motion to drive the left and right guide posts, the left and right sliding cylinders, the left and right door carrying frames and the left and right door plates to move, and the opening and closing actions of the door are realized.)

1. A drive-by-wire automatic vehicle door with variable transmission ratio is characterized in that: the automobile frame loading device comprises a loading plate (22) fixed on an automobile frame, a motor (1) which is arranged on the loading plate (22) and can slide left and right on the loading plate (22), a driving wheel (2) connected with one end of the motor (1), a steel belt (3), a conical wheel (4), a belt wheel (7), a synchronous belt (8), a right clamping plate (9), a left clamping plate (11), a right guide pillar (10), a left guide pillar (12), a left sliding cylinder (13), a right sliding cylinder (14), a polished rod (15), a left door carrying frame (16), a right door carrying frame (17), a left door plate (18), a right door plate (19), a switch (20) and an ECU (21);

the inner hole of the driving wheel (2) is fixedly connected with a motor shaft, the conical surface wheel (4) consists of a first conical disc (5) and a second conical disc (6), one end of a steel belt (3) is coated on the outer ring of the driving wheel (2), the other end of the steel belt is coated between the first conical disc (5) and the second conical disc (6) of the conical surface wheel (4), the first conical disc (5) is connected with the steel belt (3), the second conical disc (6) is connected with the steel belt (3), the belt wheel (7) is fixed on the bearing plate (22) and is fixedly connected with the conical surface wheel (4), the synchronous belt (8) is coated on the outer ring of the belt wheel (7) and is fixedly connected with the right clamping plate (9) and the left clamping plate (11), one end of the right clamping plate (9) is fixedly connected with the synchronous belt (8), the other end of the right guide pillar (10) is connected with the right guide pillar (10), the right guide pillar (10) is driven to, one end of the left clamping plate (11) is fixedly connected with a synchronous belt (8), the other end of the left clamping plate is connected with a left guide post (12), the left guide post (12) is driven to move linearly by the movement of the synchronous belt (8), the left guide post (12) is fixed on a left sliding barrel (13), the left sliding barrel (13) is connected with a left door carrying frame (16), the left sliding barrel (13) is covered on the outer ring of the polish rod (15), the right sliding barrel (14) is connected with a right door carrying frame (17), the right sliding barrel (14) is covered on the outer ring of the polish rod (15), the polish rod (15) is fixed on a bearing plate (22), the outer ring is attached with the left sliding barrel (13) and the right sliding barrel (14), the left door carrying frame (16) is fixed on a left door plate (18) and connected with the left sliding barrel (13) to drive the left door plate (18) to move left and right along the polish rod (15), the right door plate (17) is fixed on a right door carrying frame (, the right door plate (19) is driven to move left and right along the polish rod (15), the switch (20) is installed on the right door plate (19) and provides door opening or closing signals for the ECU (21), and the ECU (21) receives the switch (20) signals and controls the motor (1) to move and rotate.

2. The variable ratio by wire automatic vehicle door of claim 1, wherein: the synchronous belt (8) is wrapped on the outer ring of the belt wheel (7) and converts the rotary motion of the belt wheel (7) into the linear motion of the left clamping plate (11) and the right clamping plate (9).

3. The variable ratio automatic by wire door of claim 2, wherein: the left sliding barrel (13) axially slides along the outer ring of the polish rod (15).

4. The variable ratio automatic by wire door of claim 3, wherein: the right sliding barrel (14) axially slides along the outer ring of the polish rod (15).

The technical field is as follows:

the invention relates to the technology of an automatic door of an automobile, in particular to a drive-by-wire automatic door with a variable transmission ratio, belonging to the technical field of unmanned automobiles.

Background art:

with the continuous development of the unmanned automobile industry, the reliability and flexibility of the wire-controlled automatic automobile door gradually become important indexes for evaluating products of the wire-controlled automatic automobile door. At present, the more mainstream line control automatic vehicle door generally comprises a motor, a transmission mechanism, a guide mechanism and a door panel. In the transmission mechanism, the rotating torque of the motor is converted into the linear motion of the door by taking the planetary gear and the screw nut as the torque transmission mode. The transmission mode of the planetary gear and the screw rod nut is that one end of the planetary gear assembly is connected with the motor, the torque of the motor is reduced and increased, then the torque is transmitted to the screw rod at the other end, the screw rod is controlled to rotate, and the nut can drive the door plate to axially displace, so that the opening and closing actions of the door are realized.

The transmission mode of present planetary gear + screw-nut has certain drawback: firstly, the transmission ratio is fixed, and the nonlinear control on the torque output by a motor cannot be carried out; and secondly, the processing technology of the planetary gear, the screw rod and the nut is complex, the price of parts is high, and the control cost is difficult. Thirdly, the speed is difficult to adjust, the door opening and closing speed is low, and the passenger experience is influenced.

Therefore, there is a need to improve the prior art to overcome the deficiencies of the prior art.

The invention content is as follows:

the invention provides a drive-by-wire automatic vehicle door with variable transmission ratio to solve the problems in the prior art.

The technical scheme adopted by the invention is as follows: a drive-by-wire automatic vehicle door with variable transmission ratio comprises a bearing plate fixed on a vehicle frame, a motor which is arranged on the bearing plate and can slide left and right on the bearing plate, a driving wheel connected with one end of the motor, a steel belt, a conical wheel, a belt wheel, a synchronous belt, a right clamping plate, a left clamping plate, a right guide pillar, a left sliding cylinder, a right sliding cylinder, a polished rod, a left door carrying frame, a right door carrying frame, a left door plate, a right door plate, a switch and an ECU (electronic control Unit);

the inner hole of the driving wheel is fixedly connected with a motor shaft, the conical wheel consists of a first conical disc and a second conical disc, one end of a steel belt is covered on the outer ring of the driving wheel, the other end of the steel belt is covered between the first conical disc and the second conical disc of the conical wheel, the first conical disc is connected with the steel belt, the second conical disc is connected with the steel belt, the belt wheel is fixed on the bearing plate and fixedly connected with the conical wheel, the synchronous belt is covered on the outer ring of the belt wheel and fixedly connected with a right clamping plate and a left clamping plate, one end of the right clamping plate is fixedly connected with the synchronous belt, the other end of the right clamping plate is connected with a right guide pillar, the right guide pillar is fixed on a right sliding barrel, one end of the left clamping plate is fixedly connected with the synchronous belt, the other end of the left guide pillar is connected with a left guide pillar, the left sliding barrel is fixed, the utility model discloses a door-opening and door-closing device, including bearing plate, polish rod, door-carrying frame, right slide cartridge, left door board, switch, ECU, switch signal, ECU receives switching signal, and control motor removes and rotates, and right slide cartridge is connected with right door-carrying frame, and the cladding of right slide cartridge is in the polish rod outer lane, the polish rod is fixed on the bearing plate, and the outer lane is laminated with left slide cartridge, right slide cartridge mutually, left side door-carrying frame is fixed on left door board, is connected with left slide cartridge, drives left door board along polish rod side-to-side motion, right side door-carrying frame is fixed on right door board, is connected with right slide.

Further, the hold-in range cladding is at the band pulley outer lane, converts the rotary motion of band pulley into the linear motion of left splint and right splint.

Further, the left sliding barrel axially slides along the outer ring of the polished rod.

Further, the right sliding barrel axially slides along the polished rod outer ring.

The invention has the following beneficial effects:

(1) the drive ratio of the drive-by-wire automatic vehicle door with the variable drive ratio is variable, so that the nonlinear adjustment of the torque and the rotating speed of the motor is realized, the action of the door closing end stage is softer, and the anti-pinch function can effectively protect children, animals, fragile objects and the like.

(2) The drive-by-wire automatic vehicle door with the variable transmission ratio has the advantages that the power is transmitted through the driving wheel, the conical surface wheel and the steel belt which are simple in structure, and the performance is reliable.

(3) The drive-by-wire automatic vehicle door with the variable transmission ratio can reduce the time of the door opening and closing process by matching different torques and rotating speeds of the motor.

Description of the drawings:

FIG. 1 is a schematic structural diagram of a variable ratio drive-by-wire automatic vehicle door of the present invention.

FIG. 2 is a schematic top view of the first conical disk and the second conical disk when they are adjacent.

Fig. 3 is a schematic front view of the first conical disk and the second conical disk when they are close to each other.

FIG. 4 is a top view of the first cone and the second cone as they are separated.

FIG. 5 is a schematic front view of the first cone and the second cone separated.

The specific implementation mode is as follows:

the invention will be further described with reference to the accompanying drawings.

The drive-by-wire automatic vehicle door with variable transmission ratio comprises a bearing plate 22 fixed on a vehicle frame, a motor 1 which is arranged on the bearing plate 22 and can slide left and right on the bearing plate 22, a driving wheel 2 connected with one end of the motor 1, a steel belt 3, a conical wheel 4, a belt wheel 7, a synchronous belt 8, a right clamping plate 9, a left clamping plate 11, a right guide post 10, a left guide post 12, a left sliding cylinder 13, a right sliding cylinder 14, a polished rod 15, a left door carrying frame 16, a right door carrying frame 17, a left door plate 18, a right door plate 19, a switch 20 and an ECU 21.

The inner hole of the driving wheel 2 is fixedly connected with a motor shaft (not shown), the conical surface wheel 4 consists of a first conical disc 5 and a second conical disc 6, one end of the steel belt 3 is wrapped on the outer ring of the driving wheel 2, and the other end of the steel belt is wrapped between the first conical disc 5 and the second conical disc 6 of the conical surface wheel 4, so that the power of the driving wheel 2 is transmitted to the conical surface wheel 4. The first conical disc 5 is connected with the steel belt 3 and can axially slide, and the second conical disc 6 is connected with the steel belt 3 and can axially slide. The belt wheel 7 is fixed on the bearing plate 22 and fixedly connected with the conical wheel 4. The synchronous belt 8 is wrapped on the outer ring of the belt wheel 7 and fixedly connected with the right clamping plate 9 and the left clamping plate 11, and the rotary motion of the belt wheel 7 is converted into the linear motion of the left clamping plate 11 and the right clamping plate 9. One end of the right clamping plate 9 is fixedly connected with the synchronous belt 8, the other end of the right clamping plate is connected with a right guide pillar 10, the right guide pillar 10 is driven to move linearly by the motion of the synchronous belt 8, and the right guide pillar 10 is fixed on the right sliding barrel 14. One end of the left clamping plate 11 is fixedly connected with the synchronous belt 8, the other end of the left clamping plate is connected with a left guide pillar 12, the left guide pillar 12 is driven to move linearly by the movement of the synchronous belt 8, and the left guide pillar 12 is fixed on the left sliding barrel 13. The left sliding barrel 13 is connected with a left door carrying frame 16, and the left sliding barrel 13 is coated on the outer ring of the polished rod 15 and can axially slide. The right sliding barrel 14 is connected with a right door carrying frame 17, and the right sliding barrel 14 is coated on the outer ring of the polish rod 15 and can axially slide. The polish rod 15 is fixed on the bearing plate 22, and the outer ring is attached to the left sliding barrel 13 and the right sliding barrel 14 to provide guidance and support for the left sliding barrel 13 and the right sliding barrel 14. The left door carrying frame 16 is fixed on the left door plate 18 and connected with the left sliding cylinder 13 to drive the left door plate 18 to move left and right along the polished rod 15. The right door carrying frame 17 is fixed on the right door plate 19 and connected with the right sliding barrel 14 to drive the right door plate 19 to move left and right along the polish rod 15. A switch 20 is mounted on the right door panel 19 to provide a door open or close signal to the ECU 21. The ECU21 receives the signal from the switch 20 and controls the movement and rotation of the motor 1.

The working principle of the drive-by-wire automatic vehicle door with variable transmission ratio is as follows:

1. the passenger presses down switch 20 on the right door plate 19, the signal that opens the door or closes the door feeds back to ECU21, ECU21 control motor 1 rotates, through action wheel 2, steel band 3, conical surface wheel 4, band pulley 7, hold-in range 8 transmission power, drive left splint 11, left guide pillar 12, left slide cartridge 13, left door carrying frame 16, left door plate 18 along polished rod 15 axial displacement, drive right splint 9 simultaneously, right guide pillar 10, right slide cartridge 14, right door carrying frame 17 along polished rod 15 axial displacement.

When ECU21 control motor 1 rotated, also can control motor 1 and move left, steel band 3 is inside extrudeed, and first conical disk 5 and second conical disk 6 of conical surface wheel 4 separate for the cladding is reduced at the steel band 3 diameter of conical surface wheel 4 one end, and the drive ratio between action wheel 2 and the conical surface wheel 4 diminishes, and under the unchangeable circumstances of motor 1 rotational speed, make the rotational speed of conical surface wheel 4 increase, thereby improve the speed of opening the door or closing the door.

In the drive-by-wire automatic vehicle door with variable transmission ratio, the ECU21 can receive a door opening and closing signal to control the motor to rotate, the torque of the motor is transmitted to the synchronous belt through the driving wheel, the steel belt, the conical wheel and the belt wheel, the synchronous belt converts the rotary motion into linear motion to drive the left and right guide posts, the left and right sliding cylinders, the left and right door carrying frames and the left and right door plates to move, and the opening and closing actions of the door are realized.

In the invention, the conical surface wheel consists of a first conical disc and a second conical disc, when the left door panel and the right door panel start to act, the first conical disc and the second conical disc are close to each other, the outer diameter of a steel belt clamped between the first conical disc and the second conical disc is larger, and the steel belt is in a large transmission ratio state, so that the speed reduction and torque increase of a motor can be realized; in the process of moving the left door plate and the right door plate, the ECU controls the motor to drive the driving wheel to move leftwards, the steel belt extrudes inwards, the first conical disc and the second conical disc of the conical wheel are separated, so that the outer diameter of the steel belt clamped in the middle is reduced, the transmission ratio is reduced, the rotating speed of the motor is increased, and the time for opening and closing the door is shortened.

The foregoing is only a preferred embodiment of this invention and it should be noted that modifications can be made by those skilled in the art without departing from the principle of the invention and these modifications should also be considered as the protection scope of the invention.