Automatic control device for electric tail gate

Abstract

The utility model discloses an automatic control device for an electric tail gate, which is used for controlling the opening and closing of an overweight tail gate and comprises a plurality of tail gate hinges arranged at the bottom of the overweight tail gate and used for installing the overweight tail gate at the tail of a vehicle; the push rod hinges are arranged on the two sides of the overweight tail door and used for locking the overweight tail door and enabling the overweight tail door to be in a closed state; the push rod fixing seats are arranged on the two sides of the vehicle tail part; the plurality of electric push rods are mounted between the push rod hinge and the push rod fixing seat; the control circuit is connected with the electric push rods and used for controlling the electric push rods to stretch out and draw back so as to achieve opening and closing of the overweight tail door. The tail door hinge comprises a tail door left hinge and a tail door right hinge, and the overweight tail door is installed on the tail portion of the vehicle through the tail door left hinge and the tail door right hinge. The tail door can be automatically controlled, and the door opening and closing efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile tailgate control, in particular to an automatic control device for an electric tailgate. Background Art

[0002] For protective self-driving vehicles, the tailgate is designed to be folded up and down due to vehicle structure restrictions. After opening, the tailgate can be used as a stepping stone, which saves space and improves the vehicle's passability. Because the tailgate has certain protective properties, its weight is very large, reaching about 300 kilograms. The existing technology mainly uses manual door opening and closing, which is labor-intensive and inconvenient to use; or the tailgate switch control method is not convenient to use, cannot achieve automatic control, and is difficult to meet usage needs. Utility Model Content

[0003] The utility model aims to provide an automatic control device for an electric tailgate, so as to improve the efficiency and convenience of opening and closing the door and reduce the labor intensity of personnel.

[0004] To achieve the above object, the utility model provides the following technical solution: an electric tailgate automatic control device for controlling the opening and closing of an overweight tailgate, comprising:

[0005] A plurality of tailgate hinges, arranged at the bottom of the overweight tailgate, for installing the overweight tailgate at the rear of the vehicle;

[0006] A plurality of push rod hinges are arranged on both sides of the overweight tailgate, and are used to lock the overweight tailgate and keep it in a closed state;

[0007] A plurality of push rod fixing seats are arranged on both sides of the rear of the vehicle;

[0008] A plurality of electric push rods are installed between the push rod hinge and the push rod fixing seat;

[0009] The control circuit is connected to the plurality of electric push rods and is used to control the extension and retraction of the electric push rods to realize the opening and closing of the overweight tailgate.

[0010] Preferably, the tailgate hinge comprises a left tailgate hinge and a right tailgate hinge, and the overweight tailgate is installed at the rear of the vehicle via the left tailgate hinge and the right tailgate hinge.

[0011] Preferably, the push rod hinge includes a left push rod hinge and a right push rod hinge, the push rod fixing seat includes a left push rod fixing seat and a right push rod fixing seat, the electric push rod includes a left electric push rod and a left electric push rod, the overweight tailgate is provided with a left push rod hinge and a right push rod hinge, the rear part of the vehicle is provided with a left push rod fixing seat and a right push rod fixing seat, a left electric push rod is installed between the left push rod hinge and the left push rod fixing seat, a right electric push rod is installed between the right push rod hinge and the right push rod fixing seat, and the left electric push rod and the right electric push rod are connected to a control circuit.

[0012] Preferably, the control circuit includes a door opening and closing control unit and a relay.

[0013] Preferably, the door opening and closing control unit includes a first switch control unit and a second switch control unit, wherein the first switch control unit is arranged inside the vehicle and the second switch control unit is arranged outside the vehicle. The door opening and closing control unit includes a door opening button and a door closing button. The button control here can be a conventional mechanical control switch or a remote control switch.

[0014] Preferably, it also includes: a door opening limit switch, which is arranged at the bottom of the rear part of the vehicle, and can also be arranged at the bottom of the overweight tailgate, so as to achieve contact when reaching the limit position. The door opening limit switch is connected to the control circuit, and the door opening limit switch includes a switch SQ1. When the overweight tailgate contacts the door opening limit switch, the switch SQ1 is disconnected and the electric push rod stops working. When the overweight tailgate contacts the door opening limit switch, the switch SQ1 is disconnected. The door opening limit switch controls the circuit through contact, avoids manual operation, and can automatically disconnect the circuit.

[0015] Preferably, the rear of the vehicle is provided with a door lock electric push rod for locking and unlocking the overweight tailgate. The door lock electric push rod can lock the overweight tailgate to ensure the safety of the vehicle during driving.

[0016] Preferably, it also includes: a door closing limit switch, which is arranged at the top of the rear part of the vehicle, and can also be arranged at the top of the overweight tailgate, so as to achieve contact when reaching the limit position. The door closing limit switch is connected to the control circuit, and the door closing limit switch includes a switch SQ2-1 and a switch SQ2-2. When the overweight tailgate contacts the door closing limit switch, the switch SQ2-1 is disconnected, the electric push rod stops working, the switch SQ2-2 is closed and turned on, and the door lock electric push rod extends to lock the overweight tailgate.

[0017] Preferably, the relay includes coils KM1, KM2, KM3 and KM4, wherein the coils KM1 and KM2 are used to control the telescopic movement of the left electric push rod and the right electric push rod, and the coils KM3 and KM4 are used for the telescopic movement of the door lock electric push rod.

[0018] The coil KM1 controls the contact KM1-1, the contact KM1-2 and the contact KM1-3. When the coil KM1 is energized, the contact KM1-1 and the contact KM1-2 are connected, and the contact KM1-3 is disconnected; when the coil KM1 is de-energized, the contact KM1-1 and the contact KM1-2 are disconnected, and the contact KM1-3 is connected;

[0019] The coil KM2 controls the contact KM2-1, the contact KM2-2 and the contact KM2-3. When the coil KM2 is energized, the contact KM2-1 and the contact KM2-2 are connected, and the contact KM2-3 is disconnected; when the coil KM2 is de-energized, the contact KM2-1 and the contact KM2-2 are disconnected, and the contact KM2-3 is connected;

[0020] The coil KM3 controls the contact KM3-1, the contact KM3-2 and the contact KM3-3. When the coil KM3 is energized, the contact KM3-1 and the contact KM3-2 are connected, and the contact KM3-3 is disconnected; when the coil KM3 is de-energized, the contact KM3-1 and the contact KM3-2 are disconnected, and the contact KM3-3 is connected;

[0021] The coil KM4 controls the contact KM4-1, the contact KM4-2 and the contact KM4-3. When the coil KM4 is energized, the contact KM4-1 and the contact KM4-2 are connected, and the contact KM4-3 is disconnected; when the coil KM4 is de-energized, the contact KM4-1 and the contact KM4-2 are disconnected, and the contact KM4-3 is connected.

[0022] The utility model adopts a double push rod system and a matching high-power electric push rod, has a simple structure, and can open and close a heavy-weight protective folding tailgate, and the folding weight can reach about 300 kilograms.

[0023] After the tailgate is closed, it will automatically lock, making it easier for personnel to operate and improving vehicle safety. It greatly improves the efficiency of the existing single-bar door opening and closing, and also increases the service life of related components. Passengers can control the tailgate from inside and outside the vehicle through the electronic control system, which can control the tailgate to open and close with one button, reducing the labor intensity of personnel and making opening and closing the door easier and faster.

[0024] Compared with the prior art, the beneficial effects of the utility model are:

[0025] The utility model adopts a double electric push rod drive, has a simple structure, high safety, can make the overweight tailgate open and close quickly, adopts multiple control switches, can be operated inside or outside the car, and is easy to use. Through the setting of the limit switch, the tailgate can be automatically powered off, and automatic control is realized. The efficiency of opening and closing the door is improved, and the labor intensity of personnel is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the structure of the utility model in a closed state;

[0027] Figure 2 This is a schematic diagram of the structure of the utility model in the open door state;

[0028] Figure 3 This is a side view structural diagram of the utility model in a closed state;

[0029] Figure 4 This is a schematic diagram of the circuit structure of the door opening process of the utility model;

[0030] Figure 5 This is a schematic diagram of the circuit structure of the door opening termination state of the utility model;

[0031] Figure 6 This is a schematic diagram of the side structure of the utility model in the open door state;

[0032] Figure 7 This is a schematic diagram of the circuit structure of the door closing process of the utility model;

[0033] Figure 8 This is a schematic diagram of the circuit structure of the door closing termination state of the utility model.

[0034] Figure numerals: 1. Door opening button; 2. Door closing button; 3. Left electric push rod; 4. Left push rod fixing seat; 5. Left push rod hinge; 6. Tailgate left hinge; 7. Tailgate right hinge; 8. Right push rod fixing seat; 9. Right electric push rod; 10. Right push rod hinge; 11. Door lock electric push rod; 12. Overweight tailgate; 13. Door closing limit switch; 14. Relay; 15. Door opening limit switch. DETAILED DESCRIPTION

[0035] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0036] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate directions or positions, and the relationship is based on the directions or positional relationships shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0037] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0039] like Figure 1 and Figure 2 As shown, an electric tailgate automatic control device includes a door opening button 1, a door closing button 2, a door closing limit switch 13, a door opening limit switch 15 and a relay 14, wherein a pair of door opening buttons 1 and door closing buttons 2 are installed on the left side of the tailgate, and another pair of door opening buttons 1 and door closing buttons 2 are installed inside the vehicle, and the door opening buttons 1 and door closing buttons 2 can be installed separately or together. The switch corresponding to the door opening and closing button lock adopts a self-resetting switch. During use, the switch needs to be pressed manually all the time, and it will automatically reset after being released. The door closing limit switch 13 is installed on the roof of the vehicle to detect whether the tailgate is in the closed position state. The door opening limit switch 15 is installed on the bottom of the vehicle to detect whether the tailgate is in the open position state. The relay 14 is installed at the rear of the vehicle to control the operation of the entire system. The control circuit is formed by connecting the matching wiring harness.

[0040] The tail of the left electric push rod 3 is connected to the vehicle body through the left push rod fixing seat 4, the head is connected to the rear of the vehicle through the left push rod hinge 5, and is connected to the control circuit through the matching wiring harness.

[0041] The tail of the right electric push rod 9 is connected to the vehicle body through the right push rod fixing seat 8, the head is connected to the rear of the vehicle through the right push rod hinge 10, and is connected to the control circuit through the matching wiring harness.

[0042] The door lock electric push rod 11 is fixed to the rear of the vehicle and connected to the control circuit through a matching wiring harness. The overweight tailgate 12 is connected to the vehicle body through a tailgate left hinge 6 and a tailgate right hinge 7.

[0043] During assembly, the parallel left electric push rod 3 and right electric push rod 9 are placed on the left and right sides of the overweight tailgate 12, and connected to the vehicle body and tailgate through brackets and hinges. The matching wiring harness connects the control system to the left and right electric push rods and then to the battery, and a 24V, 20A insurance is connected in series at the positive pole.

[0044] The composition of the control circuit is explained in combination with the working principle. The following is the working principle of opening and closing the door (the direction of the arrow in the figure indicates the direction of the current):

[0045] Door opening process: Before opening the door, the overweight tailgate 12 is in the following Figure 3 In the closed state shown, the door opening limit switch 15 is in the closed state. Figure 4 As shown, press the door opening button 1, that is, the door opening switch SB1 in the figure is closed and turned on (it can also be switch SB2, which is set as the switch inside the car and the switch outside the car, and the two are in parallel), the coil KM3 is energized, the normally open contacts KM3-1 and KM3-2 are closed, the door lock electric push rod 11 is energized and the push rod is retracted to complete the tailgate unlocking. At the same time, the normally closed contact KM3-3 is disconnected, forming an interlock with the coil KM4 to prevent the door lock electric push rod 11 from short-circuiting and burning due to misoperation.

[0046] At the same time, the coil KM1 is energized, the normally open contacts KM1-1 and KM1-2 are closed, the left electric push rod 3 and the right electric push rod 9 are energized, and the forward push rods extend, pushing the overweight tailgate 12 to rotate downward with the tailgate left hinge 6 and the tailgate right hinge 7 as the axis center. After the door is opened to the position, it touches the door opening limit switch 15. Figure 5 As shown, the normally closed point SQ1 is disconnected, causing the coil KM1 to lose power, KM1-1 and KM1-2 to disconnect the left electric push rod 3 and the right electric push rod 9 to lose power and stop moving. KM1-3 is the normally closed contact of the relay KM1. Under normal conditions, KM1 is not powered on, and KM1-3 is in the on state. When the KM1 coil is powered on, KM1-3 is in the off state, which is used to form an interlock with the KM2 relay to prevent the electric push rod from being short-circuited due to the simultaneous power-on of KM1 and KM2 due to misoperation. The door opening action is now completed, and the result is as follows Figure 6 The structure shown.

[0047] Closing process: The overweight tailgate 12 is in the following Figure 6 In the open state shown, the door closing limit switch 13 is in the disconnected state. Press the door closing button 2, as shown in FIG. Figure 7As shown, the door closing switch SB3 is closed and turned on (it can also be switch SB4), the coil KM2 is energized, the normally open contacts KM2-1 and KM2-2 are closed, the left electric push rod 3 and the right electric push rod 9 are energized to reverse and retract, pulling the overweight tailgate 12 to rotate upward with the tailgate left hinge 6 and the tailgate right hinge 7 as the axis center, and the door touches the door closing limit switch 13 after it is closed. KM2-3 is the normally closed contact of relay KM2. Under normal conditions, KM2 is not energized, and KM2-3 is in the on state. When the KM2 coil is energized, KM2-3 is in the off state. Its function is to form an interlock with the KM1 relay to prevent the electric push rod from being short-circuited due to the simultaneous energization of KM1 and KM2 due to misoperation. Figure 8 As shown, the normally closed point SQ2-1 is disconnected, the coil KM2 loses power, KM2-1 and KM2-2 are disconnected, the left electric push rod 3 and the right electric push rod 9 lose power and stop moving. At the same time, the normally open point SQ2-2 is closed, the coil KM4 is powered on, KM4-1 and KM4-2 are closed, the door lock electric push rod 11 is powered on, the push rod is extended forward, and the tailgate is locked. The normally closed contact KM4-3 is disconnected, and it forms an interlock with the coil KM3 to prevent the push rod from short-circuiting and burning due to misoperation. At this point, the door closing action is completed, and the result is as follows Figure 3 The structure shown.

[0048] For ease of operation, two sets of door opening and closing buttons are set inside and outside the car (the location of the buttons inside the car is not shown in the figure), so that people inside the car can directly operate the opening and closing of the overweight tailgate inside the car. The switch can be installed on the car body or by remote control.

[0049] In addition, for special-purpose vehicles that adopt elastic suspension shock absorption, after installing this system, the two electric push rods of the overweight tailgate can simultaneously play the role of shock absorption and impact resistance.

[0050] The utility model adopts a high-power dual electric push rod drive with a simple structure, which can enable the overweight tailgate to be opened and closed quickly, and the opening angle reaches 127 degrees, which is convenient for people to get on and off the car quickly. It eliminates the problem that the existing single push rod has insufficient lifting force and cannot be operated in the car. The operator can realize remote operation by pressing buttons in the car, which reduces the labor intensity of the personnel, makes it light and convenient, and greatly improves the safety and convenience of the personnel.

[0051] The above is only an embodiment of the utility model, and the common sense such as the known specific structure and characteristics in the scheme is not described too much here. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the utility model. Any figure mark in the claims should not be regarded as limiting the claims involved.

Claims

1. An electric tailgate automatic control device for controlling the opening and closing of an overweight tailgate (12), characterized in that: include: A plurality of tailgate hinges, arranged at the bottom of the overweight tailgate (12), and used for installing the overweight tailgate (12) at the rear of the vehicle; A plurality of push rod hinges are arranged on both sides of the overweight tailgate (12) and are used to lock the overweight tailgate (12) and keep it in a closed state; A plurality of push rod fixing seats are arranged on both sides of the rear of the vehicle; A plurality of electric push rods are installed between the push rod hinge and the push rod fixing seat; A control circuit is connected to the plurality of electric push rods and is used to control the extension and retraction of the electric push rods to realize the opening and closing of the overweight tailgate (12).

2. The electric tailgate automatic control device according to claim 1, characterized in that: The tailgate hinge comprises a left tailgate hinge (6) and a right tailgate hinge (7), and the overweight tailgate (12) is installed at the rear of the vehicle via the left tailgate hinge (6) and the right tailgate hinge (7).

3. The electric tailgate automatic control device according to claim 1, characterized in that: The push rod hinge comprises a left push rod hinge (5) and a right push rod hinge (10), the push rod fixing seat comprises a left push rod fixing seat (4) and a right push rod fixing seat (8), the electric push rod comprises a left electric push rod (3) and a left electric push rod (3), the overweight tailgate (12) is provided with a left push rod hinge (5) and a right push rod hinge (10), the rear of the vehicle is provided with a left push rod fixing seat (4) and a right push rod fixing seat (8), the left electric push rod (3) is installed between the left push rod hinge (5) and the left push rod fixing seat (4), the right electric push rod (9) is installed between the right push rod hinge (10) and the right push rod fixing seat (8), and the left electric push rod (3) and the right electric push rod (9) are connected to a control circuit.

4. The electric tailgate automatic control device according to claim 1, characterized in that: The control circuit comprises a door opening and closing control unit and a relay (14).

5. The electric tailgate automatic control device according to claim 4, characterized in that: The door opening and closing control unit includes a first switch control unit and a second switch control unit, wherein the first switch control unit is arranged inside the vehicle, and the second switch control unit is arranged outside the vehicle.

6. The electric tailgate automatic control device according to claim 4, characterized in that: The door opening and closing control unit comprises a door opening button (1) and a door closing button (2).

7. The electric tailgate automatic control device according to claim 1, characterized in that: Also includes: The door opening limit switch (15) is arranged at the bottom of the rear part of the vehicle. The door opening limit switch (15) is connected to the control circuit. The door opening limit switch (15) comprises a switch SQ1. When the overweight tailgate (12) contacts the door opening limit switch (15), the switch SQ1 is disconnected and the electric push rod stops working.

8. The electric tailgate automatic control device according to claim 1, characterized in that: The rear part of the vehicle is provided with a door lock electric push rod (11) for locking and unlocking the overweight tailgate (12).

9. The electric tailgate automatic control device according to claim 1, characterized in that: Also includes: A door closing limit switch (13) is arranged at the top of the rear part of the vehicle. The door closing limit switch (13) is connected to a control circuit. The door closing limit switch (13) comprises a switch SQ2-1 and a switch SQ2-2. When the overweight tailgate (12) contacts the door closing limit switch (13), the switch SQ2-1 is disconnected, the electric push rod stops working, the switch SQ2-2 is closed and turned on, the door lock electric push rod (11) extends, and the overweight tailgate (12) is locked.

10. The electric tailgate automatic control device according to claim 5, characterized in that: The relay (14) comprises a coil KM1, a coil KM2, a coil KM3 and a coil KM4, wherein the coil KM1 and the coil KM2 are used to control the telescopic movement of the left electric push rod (3) and the right electric push rod (9), and the coil KM3 and the coil KM4 are used to control the telescopic movement of the door lock electric push rod (11). The coil KM1 controls the contact KM1-1, the contact KM1-2 and the contact KM1-3. When the coil KM1 is energized, the contact KM1-1 and the contact KM1-2 are connected, and the contact KM1-3 is disconnected. The coil KM2 controls the contact KM2-1, the contact KM2-2 and the contact KM2-3. When the coil KM2 is energized, the contact KM2-1 and the contact KM2-2 are connected, and the contact KM2-3 is disconnected. The coil KM3 controls the contact KM3-1, the contact KM3-2 and the contact KM3-3. When the coil KM3 is energized, the contact KM3-1 and the contact KM3-2 are connected, and the contact KM3-3 is disconnected. The coil KM4 controls the contact KM4-1, the contact KM4-2 and the contact KM4-3. When the coil KM4 is energized, the contact KM4-1 and the contact KM4-2 are connected, and the contact KM4-3 is disconnected.

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