Automobile electric tail gate lifting device

Abstract

The utility model belongs to the field of automobile electric tail gates, and discloses an automobile electric tail gate lifting device which comprises a fixed rod and a driving motor, a movable rod is slidably mounted at the front end of the fixed rod, a first hinge piece is fixedly mounted at the rear end of the driving motor, an anti-pinch device is mounted at the front end of the movable rod in a sleeving manner, and a second hinge piece is fixedly mounted at the front end of the anti-pinch device. When the tension sensor loses the sensing function due to the influence of other conditions and the tail door is blocked by fingers or the trunk of a person, the driving motor does not stop working, and at the moment, after the movable rod retracts into the fixed rod to the maximum value, the tail door is locked by the sliding block. When the anti-pinch device does not have a pinch-free function, the spring can compensate for a certain retraction distance through self stretching, then the pressure of a person clamped by the tail door is only the stretching force of the spring, the tail door cannot be completely closed at the moment, a certain recovery space is reserved, and then the person is protected against serious clamping injury when the anti-pinch device loses the pinch-free function.

Description

Technical Field

[0001] The present application belongs to the technical field of automobile electric tailgates, and in particular to an automobile electric tailgate lifting device. Background Art

[0002] With the rapid development of the automobile industry, more and more car tailgates are equipped with automatic lifting functions. The opening and closing of the car tailgate is usually achieved by an electric strut installed at the tailgate. The extension and contraction of the electric strut drive the automatic opening and closing of the tailgate and the rear of the car body.

[0003] In the prior art, the electric struts used to realize automatic lifting of the car tailgate generally provide an anti-pinch mode, but this mode performs very poorly in actual use in many cars and often reacts slowly. At the same time, the anti-pinch mode often fails, making the anti-pinch function unreliable. Once the user's fingers or torso are accidentally placed at the end of the door, it may cause the risk of injury from hard clamping. Therefore, in order to solve this problem, it is necessary to optimize the design of the product and propose an electric tailgate lifting device for automobiles. Utility Model Content

[0004] The purpose of the present application is to provide an electric tailgate lifting device for an automobile in order to solve the above-mentioned problems.

[0005] The technical solution adopted in the present application is as follows: an electric tailgate lifting device for an automobile, comprising a fixed rod and a driving motor, a movable rod being slidably installed at the front end of the fixed rod, a hinge part 1 being fixedly installed at the rear end of the driving motor, an anti-pinch device being sleeved and installed at the front end of the movable rod, a hinge part 2 being fixedly installed at the front end of the anti-pinch device, a slider being slidably installed inside the anti-pinch device, and the rear side of the slider being fixedly connected to the plug-in end of the movable rod, a tension sensor being fixedly installed at the inner cavity of the anti-pinch device at the front end of the slider, and the tension sensor being electrically connected to a circuit control board that controls the opening and closing of the driving motor, a spring being fixedly connected to the rear side of the tension sensor, and the end of the spring away from the tension sensor being fixedly connected to the slider.

[0006] A lock head is fixedly installed on the top rear side of the anti-clip device, a lock seat is fixedly installed on the top front side of the fixing rod, a bolt is fixedly installed on the rear side of the lock head, and a lock groove matched with the bolt is opened on the front side of the lock seat.

[0007] In a preferred embodiment, the front end of the fixed rod is provided with a sliding groove adapted to the movable rod, the rear end of the fixed rod is fixedly mounted with a driving motor, and the output shaft of the driving motor is fixedly connected with a threaded rod threadedly connected to the sliding end of the movable rod.

[0008] In a preferred embodiment, a slot matching the movable rod is provided at the rear end of the anti-clip device, and the front end of the movable rod is inserted and installed in the slot.

[0009] In a preferred embodiment, one end of the hinged part 1 away from the drive motor is fixedly connected to the rear of the vehicle body, and one end of the hinged part 2 away from the anti-pinch device is fixedly connected to the tailgate of the vehicle.

[0010] In a preferred embodiment, a sliding cavity adapted to the sliding block is provided inside the anti-pinch device, and the sliding block is slidably installed in the sliding cavity.

[0011] In a preferred embodiment, a magnetic sheet is fixedly mounted on the rear end of the latch, and a proximity switch extending into the lock slot is fixedly mounted on the rear end of the lock seat.

[0012] In a preferred embodiment, a slot is formed on the top of the latch, a fixing plate is fixedly installed on the top of the lock seat, an electric push rod is fixedly installed on the inner side of the fixing plate, and a block matching the slot is fixedly installed on the extended end of the electric push rod.

[0013] In summary, due to the adoption of the above technical solution, the beneficial effects of this application are:

[0014] 1. In the present application, after hinged member 1 and hinged member 2 are respectively installed at the rear position of the automobile body and the tailgate, when the driving motor is started to drive the threaded rod on its output shaft to rotate, the movable rod will be pushed out from the front end of the fixed rod. At this time, the movable rod is plugged into the anti-clip device, and then the slider is driven to push the tension sensor forward through the spring. At this time, the anti-clip device pushes the tailgate connected to hinged member 2 to move up to open the tailgate. When the tailgate needs to be closed, the driving motor is started to drive the threaded rod to rotate in the opposite direction. At this time, the anti-clip device will pull the tailgate closed through hinged member 2. When the movable rod shrinks to the maximum value into the fixed rod, the tailgate is fitted with the rear of the vehicle body. At the same time, the pin at the rear end of the lock head is inserted into the lock groove opened at the front end of the lock seat, so that the magnetic sheet is fitted on the proximity switch. At this time, the proximity switch is inductively sensed by the fitting of the magnetic sheet to start the electric push rod to extend, and then the card block is connected to the card groove, thereby firmly connecting the lock head and the lock seat together, thereby realizing the firm closure of the tailgate and the vehicle body.

[0015] 2. In the present application, when the tailgate is about to be closed and is blocked by a person's fingers or torso, the tailgate will limit the anti-pinch device from moving back through hinge 2. At this time, the slider will pull the tension sensor through the spring, thereby causing a certain tension to the tension sensor. When the tension reaches a certain value, the tension sensor will be sensed and transmit an electrical signal to the circuit control board to turn off the drive motor, thereby stopping the tailgate from closing. If the tension sensor loses its sensing function due to other conditions, the drive motor will not stop working when the tailgate is blocked by a person's fingers or torso. At this time, after the movable rod shrinks to the maximum value inside the fixed rod, the spring will compensate for a certain retraction distance through its own stretching, thereby making the pressure on the person when being clamped by the tailgate only the tensile force of the spring, and at this time the tailgate will not be completely closed, but a certain recovery space will be left, thereby protecting the person from serious clamping injuries when the anti-pinch device loses its clamping-free function. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the present application from a side view;

[0017] Figure 2 It is a structural cross-sectional view of the anti-clip device in this application;

[0018] Figure 3 This is a schematic diagram of the structure of the lock head and lock seat in this application.

[0019] Markings in the figure: 1-fixed rod, 2-movable rod, 3-drive motor, 4-hinge part 1, 5-anti-pinch device, 6-hinge part 2, 7-slider, 8-slide cavity, 9-tension sensor, 10-spring, 11-lock head, 12-lock seat, 13-latch, 14-lock slot, 15-proximity switch, 16-magnetic sheet, 17-card slot, 18-fixed plate, 19-electric push rod, 20-card block. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0021] Reference Figure 1 , 2The electric tailgate lifting device of an automobile comprises a fixed rod 1 and a driving motor 3, a movable rod 2 is slidably installed at the front end of the fixed rod 1, a sliding groove adapted to the movable rod 2 is provided at the front end of the fixed rod 1, a driving motor 3 is fixedly installed at the rear end of the fixed rod 1, an output shaft of the driving motor 3 is fixedly connected with a threaded rod threadedly connected to the sliding end of the movable rod 2, a hinge 4 is fixedly installed at the rear end of the driving motor 3, an anti-clip device 5 is sleeved and installed at the front end of the movable rod 2, a slot adapted to the movable rod 2 is provided at the rear end of the anti-clip device 5, and the front end of the movable rod 2 is plugged and installed in the slot, a hinge 2 6 is fixedly installed at the front end of the anti-clip device 5, and the hinge 4 is away from the driving rod 2. One end of the driving motor 3 is fixedly connected to the rear part of the automobile body, and the end of the hinge part 6 away from the anti-pinch device 5 is fixedly connected to the tailgate of the automobile. A slider 7 is slidably installed inside the anti-pinch device 5, and the rear side of the slider 7 is fixedly connected to the plug-in end of the movable rod 2. A sliding cavity 8 adapted to the slider 7 is opened inside the anti-pinch device 5, and the slider 7 is slidably installed in the sliding cavity 8. A tension sensor 9 is fixedly installed at the front end of the slider 7 in the inner cavity of the anti-pinch device 5, and the tension sensor 9 is electrically connected to the circuit control board that controls the opening and closing of the driving motor 3. A spring 10 is fixedly connected to the rear side of the tension sensor 9, and the end of the spring 10 away from the tension sensor 9 is fixedly connected to the slider 7.

[0022] By arranging an anti-clip device 5 at the front end of the movable rod 2, when the hinge part 1 4 and the hinge part 2 6 are respectively installed at the rear position of the automobile body and the tailgate, when the drive motor 3 is started to drive the threaded rod on its output shaft to rotate, the movable rod 2 will be pushed out from the front end of the fixed rod 1. At this time, the movable rod 2 is plugged into the anti-clip device 5, and then drives the slider 7 to push the tension sensor 9 forward through the spring 10. At this time, the anti-clip device 5 pushes the tailgate connected to the hinge part 2 6 to move upward to open the tailgate. When the tailgate needs to be closed, the drive motor 3 is started to drive the threaded rod to rotate in the opposite direction. At this time, the anti-clip device 5 will pull the tailgate closed through the hinge part 2 6 according to the same principle. When the tailgate is about to be closed and is blocked by the fingers or torso of a person, the tailgate will limit the anti-clip device 5 from moving back through the hinge part 2 6. At this time, the slider 7 will The tension sensor 9 is pulled by the spring 10, thereby causing a certain tension to the tension sensor 9. When the tension reaches a certain value, the tension sensor 9 will be sensed and transmit an electrical signal to the circuit control board to turn off the drive motor 3, thereby stopping the tailgate from closing. If the tension sensor 9 loses its sensing function due to other conditions, when the tailgate is blocked by a person's fingers or torso, the drive motor 3 does not stop working. At this time, after the movable rod 2 shrinks to the maximum value in the fixed rod 1, the spring 10 will compensate for a certain retraction distance through its own stretching, thereby making the pressure on the person when being clamped by the tailgate only the tensile force of the spring 10, and at this time the tailgate will not be completely closed, but a certain recovery space will be left, thereby protecting the person from serious clamping injuries when the anti-clamp device 5 loses its clamping-free function.

[0023] Reference Figure 1 , 3 A lock head 11 is fixedly installed on the top rear side of the anti-clip device 5, a lock seat 12 is fixedly installed on the top front side of the fixing rod 1, a latch 13 is fixedly installed on the rear side of the lock head 11, a lock slot 14 adapted to the latch 13 is provided on the front side of the lock seat 12, a magnetic sheet 16 is fixedly installed on the rear end of the latch 13, a proximity switch 15 extending into the lock slot 14 is fixedly installed on the rear end of the lock seat 12, a card slot 17 is provided on the top of the latch 13, a fixing plate 18 is fixedly installed on the top of the lock seat 12, an electric push rod 19 is fixedly installed on the inner side of the fixing plate 18, and a card block 20 adapted to the card slot 17 is fixedly installed on the extended end of the electric push rod 19.

[0024] By setting the lock head 11 and the lock seat 12, when the movable rod 2 is retracted to the maximum value toward the fixed rod 1, the tailgate is fitted against the rear of the vehicle body, and at the same time, the latch 13 at the rear end of the lock head 11 will be inserted into the lock slot 14 opened at the front end of the lock seat 12, so that the magnetic sheet 16 is fitted on the proximity switch 15. At this time, the proximity switch 15 is inductively activated by the fitting of the magnetic sheet 16 to start the electric push rod 19 to extend, and then the card block 20 is carded into the card slot 17, so that the lock head 11 and the lock seat 12 are firmly connected together, thereby realizing the firm closure of the tailgate and the vehicle body.

[0025] The implementation principle of the embodiment of the present application is:

[0026] First, after the hinge 1 4 and the hinge 2 6 are respectively installed at the rear position of the automobile body and on the tailgate, when the drive motor 3 is started to drive the threaded rod on its output shaft to rotate, the movable rod 2 will be pushed out from the front end of the fixed rod 1. At this time, the movable rod 2 is inserted into the anti-clip device 5, and then drives the slider 7 to push the tension sensor 9 forward through the spring 10. At this time, the anti-clip device 5 pushes the tailgate connected to the hinge 2 6 to move up to open the tailgate. When the tailgate needs to be closed, the drive motor 3 is started to drive the threaded rod to rotate in the opposite direction. At this time, the anti-clip device 5 will pull the tailgate closed through the hinge part 2 6. When the movable rod 2 shrinks to the maximum value toward the fixed rod 1, the tailgate is completely fitted with the rear of the vehicle body. At the same time, the latch 13 at the rear end of the lock head 11 will be inserted into the lock slot 14 opened at the front end of the lock seat 12, so that the magnetic sheet 16 is fitted on the proximity switch 15. At this time, the proximity switch 15 is induced by the fitting of the magnetic sheet 16 to start the electric push rod 19 to extend, and then the card block 20 is inserted into the card slot 17, so that the lock head 11 and the lock seat 12 are firmly connected together, so as to realize the firm closure of the tailgate and the vehicle body.

[0027] Furthermore, when the tailgate is about to close and is blocked by a person's fingers or torso, the tailgate will limit the anti-pinch device 5 from moving back through the hinge 2 6. At this time, the slider 7 will pull the tension sensor 9 through the spring 10, thereby causing a certain tension to the tension sensor 9. When the tension reaches a certain value, the tension sensor 9 will be sensed and transmit an electrical signal to the circuit control board to turn off the drive motor 3, thereby stopping the tailgate from closing. If the tension sensor 9 loses its sensing function due to other conditions, the drive motor 3 does not stop working when the tailgate is blocked by a person's fingers or torso. At this time, after the movable rod 2 shrinks to the maximum value in the fixed rod 1, the spring 10 will compensate for a certain retraction distance through its own stretching, thereby making the pressure on the person when being clamped by the tailgate only the tensile force of the spring 10, and the tailgate will not be completely closed at this time, but will leave a certain recovery space, thereby protecting the person from serious clamping injury when the anti-pinch device 5 loses its clamping-free function.

[0028] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. An electric tailgate lifting device for an automobile, comprising a fixing rod (1) and a driving motor (3), characterized in that: A movable rod (2) is slidably mounted on the front end of the fixed rod (1), a hinged part (4) is fixedly mounted on the rear end of the driving motor (3), an anti-clip device (5) is sleeved and mounted on the front end of the movable rod (2), a hinged part (6) is fixedly mounted on the front end of the anti-clip device (5), a slider (7) is slidably mounted inside the anti-clip device (5), and the rear side of the slider (7) is fixedly connected to the plug-in end of the movable rod (2), a tension sensor (9) is fixedly mounted on the inner cavity of the anti-clip device (5) at the front end of the slider (7), and the tension sensor (9) is electrically connected to a circuit control board for controlling the opening and closing of the driving motor (3), a spring (10) is fixedly connected to the rear side of the tension sensor (9), and the end of the spring (10) away from the tension sensor (9) is fixedly connected to the slider (7); A lock head (11) is fixedly mounted on the top rear side of the anti-clip device (5), a lock seat (12) is fixedly mounted on the top front side of the fixing rod (1), a latch pin (13) is fixedly mounted on the rear side of the lock head (11), and a lock slot (14) adapted to the latch pin (13) is provided on the front side of the lock seat (12).

2. The electric tailgate lifting device for automobile according to claim 1, characterized in that: The front end of the fixed rod (1) is provided with a sliding groove adapted to the movable rod (2), the rear end of the fixed rod (1) is fixedly mounted with the driving motor (3), and the output shaft of the driving motor (3) is fixedly connected with a threaded rod threadedly connected to the sliding end of the movable rod (2).

3. The electric tailgate lifting device for automobile according to claim 1, characterized in that: A slot matching the movable rod (2) is provided at the rear end of the anti-clip device (5), and the front end of the movable rod (2) is inserted and installed in the slot.

4. The electric tailgate lifting device for automobile according to claim 1, characterized in that: The end of the hinged part 1 (4) away from the driving motor (3) is fixedly connected to the rear of the vehicle body, and the end of the hinged part 2 (6) away from the anti-pinch device (5) is fixedly connected to the tailgate of the vehicle.

5. The electric tailgate lifting device for automobile according to claim 1, characterized in that: The anti-pinch device (5) is provided with a sliding cavity (8) adapted to the sliding block (7) inside, and the sliding block (7) is slidably installed in the sliding cavity (8).

6. The electric tailgate lifting device for automobile according to claim 1, characterized in that: A magnetic sheet (16) is fixedly mounted on the rear end of the latch pin (13), and a proximity switch (15) extending into the lock slot (14) is fixedly mounted on the rear end of the lock seat (12).

7. The electric tailgate lifting device for automobile according to claim 1, characterized in that: The top of the latch (13) is provided with a card slot (17), the top of the lock seat (12) is fixedly mounted with a fixing plate (18), the inner side of the fixing plate (18) is fixedly mounted with an electric push rod (19), and the extended end of the electric push rod (19) is fixedly mounted with a card block (20) adapted to the card slot (17).

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