Rear tailgate assembly and vehicle

Abstract

This application provides a tailgate assembly and a vehicle, relating to the field of vehicle tailgate technology. The tailgate assembly includes: a first tailgate and a second tailgate, both capable of rotating relative to the vehicle body. When the first and second tailgates are in the closed position, the openings are closed, and the end of the first tailgate away from the rotation axis overlaps the outside of the second tailgate. The first tailgate also has a safe open position. A triggering device is disposed on the side of the second tailgate near the first tailgate. The triggering device includes a position switch having a first state and a second state. When the first tailgate is in the closed position, the position switch remains in the first state. When the first tailgate rotates from the closed position to the safe open position, the position switch switches from the first state to the second state and outputs a trigger signal. Based on the trigger signal in the second state, it is determined that the first tailgate has completely left the interference area, thereby improving the safety and reliability of the opening of the first and second tailgates.

Description

Technical Field

[0001] This application relates to the field of vehicle tailgate technology, and particularly to a tailgate assembly and vehicle. Background Technology

[0002] Double-opening tailgates are widely used in vehicles due to their advantages such as convenient loading and unloading capabilities, ease of opening in narrow spaces, and versatility in various application scenarios.

[0003] In related technologies, a split-opening rear door includes a first rear door and a second rear door. When the two rear doors are closed, there is an overlapping area. For example, the end of the first rear door away from the rotation axis is pressed against the outside of the second rear door.

[0004] If the second back door is opened too early when the first back door is opened, interference will occur between the first and second back doors, thus affecting the safety and reliability of the back door opening. Utility Model Content

[0005] This application provides a tailgate assembly and vehicle, which aims to improve the problem of low safety and reliability of tailgate opening caused by improper tailgate opening.

[0006] The specific technical solution is as follows: In a first aspect, this application provides a tailgate assembly for a vehicle, wherein the vehicle body has a rearward opening, and the tailgate assembly includes: a first tailgate and a second tailgate, both of which are capable of rotating relative to the vehicle body. When the first tailgate and the second tailgate are in a closed position, the opening is closed, and the end of the first tailgate away from the rotation axis overlaps the outside of the second tailgate. The first tailgate also has a safe open position. A triggering device is disposed on the side of the second tailgate near the first tailgate. The triggering device includes a position switch, which has a first state and a second state. When the first tailgate is in the closed position, the position switch remains in the first state. When the first tailgate rotates from the closed position to the safe open position, the position switch switches from the first state to the second state and outputs a trigger signal.

[0007] The tailgate assembly of this application embodiment has a triggering device at the end of the second tailgate near the first tailgate. The triggering device includes a position switch, and the state change of the position switch is correlated with the position change of the first tailgate. When the first tailgate is in the closed position or between the closed position and the safe open position, the position switch is always in the first state. At this time, the second tailgate is not opened. When the first tailgate moves to the safe open position, the position switch switches from the first state to the second state and sends a trigger signal. At this time, the controller receives the trigger signal and controls the second tailgate to open. In this way, a tailgate opening process can be formed where the first tailgate is opened to the safe open position first, and then the second tailgate is opened. The user does not need to rely on experience to judge, but can judge that the first tailgate has completely left the interference area based on the trigger signal of the second state, preventing interference and collision between the first and second tailgates, thereby improving the safety and reliability of opening the first and second tailgates.

[0008] In some embodiments, the position switch is one of a contact limit switch and a photoelectric switch; The contact-type limit switch is either a normally open switch or a normally closed switch.

[0009] This setup allows for precise detection of whether the first back door has reached the safe opening position, and converts this mechanical position information into a clear electrical signal. This improves the safety and reliability of the back door opening, reduces costs, and enhances the stability and reliability of the trigger signal.

[0010] In some embodiments, the first back door includes a lock body, at least a portion of which is located on one side edge of the first back door near the second back door; The second back door has a first chamber, and a latch is provided in the first chamber. The top of the second back door has a first opening opposite to the latch. The triggering device also includes a movable plate, which is rotatably disposed at the first opening. When the first back door is rotated from the safe open position to the closed position, the movable plate rotates from the initial position to the avoidance position under the abutment action of the lock body. When the movable plate is in the initial position, it blocks the first opening. The position switch is a contact-type limit switch, which is located in the first chamber and on the movement path of the movable plate.

[0011] In this way, the movement of the lock body of the first back door will drive the movable plate to rotate, and the rotation of the movable plate will switch the state of the position switch. Thus, the state switching of the position switch and the opening and closing action of the first back door are linked, which helps to improve the reliability and stability of the trigger signal. Furthermore, when the first back door is open, the movable plate can form a sealed protection for the components inside the first chamber, thereby improving the overall environmental tolerance and service life of the position switch.

[0012] In some embodiments, when the first back door is in the closed position, the movable plate is in the avoidance position, and the movable plate is pressed against the position switch so that the position switch is maintained in the first state; When the first back door rotates from the closed position to the safe open position, the movable plate rotates from the avoidance position to the initial position, and the movable plate separates from the position switch, so that the position switch switches from the first state to the second state.

[0013] In this case, the position switch is a normally closed contact limit switch. This configuration helps to reduce the complexity of the control logic and improve the reliability and stability of the system.

[0014] In some embodiments, when the first back door is in the closed position, the movable plate is in the avoidance position, and the movable plate is separated from the position switch, and the position switch is in the first state; When the first back door rotates from the closed position to the safe open position, the movable plate rotates from the avoidance position to the initial position, and the movable plate presses against the position switch, so that the position switch switches from the first state to the second state.

[0015] In this configuration, the position switch is a normally open contact limit switch. This design helps reduce the complexity of the control logic and improves the reliability and stability of the system.

[0016] In some embodiments, the triggering device further includes an elastic reset member, which is disposed on the pivot of the movable plate or between the movable plate and the second back door; The elastic reset member is used to cause the movable plate to tend to reset to the initial position.

[0017] This configuration ensures the repeatability and automation of the triggering cycle. Furthermore, the continuous reset force provided by the elastic reset component ensures that the movable plate is tightly fitted against the edge of the first opening in its initial position, thereby further improving the sealing of the first chamber and thus extending the service life of the position switch.

[0018] In some embodiments, the second back door includes an inner panel, an outer panel, and a top panel, wherein the inner panel and the outer panel are connected, and the top panel is disposed on top of the outer panel; The first chamber includes a first sub-chamber disposed between the inner plate and the outer plate and a second sub-chamber disposed between the top plate and the outer plate. The first opening is disposed on the top plate. The movable plate is rotatably connected to the top plate. The top of the outer plate is provided with a second opening opposite to the first opening. The latch is disposed in the first sub-chamber. The position switch is located in the second sub-cavity, on one side of the rotating shaft of the movable plate, and is connected to the top plate.

[0019] This design, firstly, helps mitigate the impact of vibration, impact, and installation / maintenance on the triggering device, thereby improving its reliability and lifespan. Secondly, it simplifies the assembly process and increases production efficiency. Furthermore, the structure allows for the flexible selection of both normally open and normally closed limit switches, enabling the same mechanical structure to adapt to different circuit control and safety logic requirements, and also enhancing the triggering device's versatility and design expandability.

[0020] In some embodiments, the second back door further includes a reinforcing plate disposed in the first sub-cavity, and the latch is connected to the reinforcing plate.

[0021] This design not only improves the strength and reliability of the second back door, but also enhances the stability and strength of the latch installation.

[0022] In some embodiments, the tailgate assembly further includes a controller, and the second tailgate further includes a drive unit, the drive unit and the position switch being electrically connected to the controller.

[0023] Therefore, when the trigger signal is sent to the controller, the second rear door can be directly controlled to open, which helps to improve the automation and intelligence of the rear door opening.

[0024] Secondly, embodiments of this application provide a vehicle including the tailgate assembly described in the first aspect. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the tailgate assembly provided in the embodiments of this application; Figure 2 A schematic diagram of the rear door assembly in the open state provided in an embodiment of this application; Figure 3 This is a partially exploded structural diagram of the second rear door provided in an embodiment of this application; Figure 4 for Figure 3 Enlarged structural diagram at point M; Figure 5 A cross-sectional structural diagram of the tailgate assembly in the open state provided in an embodiment of this application; Figure 6 for Figure 5 A magnified structural diagram at point N.

[0026] The annotations in the attached figures are explained as follows: 10. Rear door assembly; 100. First back door; 110. Lock body; 200. Second back door; 201. First chamber; 2011. First sub-chamber; 2012. Second sub-chamber; 202. First opening; 210. Lock; 220. Inner panel; 230. Outer panel; 2301. Second opening; 240. Top panel; 250. Reinforcing plate; 260. Driving component; 300. Triggering device; 310. Position switch; 320. Movable plate; 3201. Rotating shaft; 330. Elastic reset component. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0028] In the description of this application, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this application. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as implying or suggesting relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0030] In the description of this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0031] In related technologies, a split-opening rear door includes a first rear door and a second rear door. When the two rear doors are closed, there is an overlapping area. For example, the end of the first rear door away from the rotation axis is pressed against the outside of the second rear door.

[0032] If the second back door is opened too early when the first back door is opened, interference will occur between the first and second back doors, thus affecting the safety and reliability of the back door opening.

[0033] Based on the above problems, this application proposes a tailgate assembly and vehicle to improve the low safety and reliability of tailgate opening.

[0034] like Figures 1 to 4 As shown, in a first aspect, this application provides a tailgate assembly 10. The tailgate assembly 10 is used in a vehicle, the vehicle body has a rearward opening, the tailgate assembly 10 includes a first tailgate 100, a second tailgate 200 and a triggering device 300, both the first tailgate 100 and the second tailgate 200 are capable of rotating relative to the vehicle body, the first tailgate 100 and the second tailgate 200 are in the closed position to close the opening of the vehicle body, and the end of the first tailgate 100 away from the rotation axis overlaps the outside of the second tailgate 200, the first tailgate 100 has a safe open position, the triggering device 300 is disposed on the side of the second tailgate 200 near the first tailgate 100, the triggering device 300 includes a position switch 310, the position switch 310 has a first state and a second state, wherein, when the first tailgate 100 is in the closed position, the position switch 310 maintains the first state; when the first tailgate 100 rotates from the closed position to the safe open position, the position switch 310 switches from the first state to the second state and outputs a trigger signal.

[0035] The rear door assembly 10 of this application embodiment is a double-opening rear door assembly, which has advantages such as convenient loading and unloading capabilities, ease of opening in narrow spaces, and versatility in adapting to various scenarios. The first rear door 100 and the second rear door 200 can be vertically or horizontally opening; this application does not impose any restrictions on this.

[0036] Both the first tailgate 100 and the second tailgate 200 are rotatably connected to the vehicle body via hinge assemblies. When closed, they cover the openings in the vehicle body, sealing off the rear storage space; when at least one of them is open, it provides access for loading and unloading items.

[0037] Understandably, when both tailgates are closed, the edge of the first tailgate 100 presses against the outside of the second tailgate 200. This facilitates the placement of a seal between the first tailgate 100 and the second tailgate 200 to further improve sealing performance.

[0038] However, since the first tailgate 100 is on the outside, the second tailgate 200 needs to detect the opening status of the first tailgate 100 when opening or closing. The safe opening position of the first tailgate 100 refers to a critical position reached by the first tailgate 100 during the opening process, or an opening angle exceeding that critical position. The safe opening position is between the closed position and the maximum opening position, and is equal to or slightly greater than the critical position. When the first tailgate 100 is in the safe opening position, the second tailgate 200 will not interfere with or collide with the first tailgate 100 during opening or closing.

[0039] The critical position depends on the size of the overlapping area between the first tailgate 100 and the second tailgate 200 when closed, the movement trajectory of the second tailgate 200, and the external design of the first tailgate 100 and the second tailgate 200. The critical position of the first tailgate 100 can be determined through experimental calibration of the first tailgate 100 and the second tailgate 200. Once the critical position is determined, the safe opening position can be flexibly designed according to actual conditions. For example, the safe opening position can be the opening position when the first tailgate 100 is opened at angles of 15°, 20°, 30°, etc.

[0040] In addition, when the first back door 100 is opened to the safe open position, small items in the backup space can be taken out and put in through the small opening exposed by the first back door 100 without having to fully open the first back door 100 and the second back door 200, which also helps to improve the convenience of taking out and putting in items.

[0041] A triggering device 300 is located on the side of the second back door 200 near the first back door 100. The state of the triggering device 300 is affected by changes in the position of the first back door 100. Specifically, the triggering device 300 includes a position switch 310, which has a first state and a second state. The first state is a de-energized state, and the second state is an energized state. The first state of the position switch 310 is associated with the closed position of the first back door 100, and the second state of the position switch 310 is associated with the safe open position of the first back door 100. When the first back door 100 moves to the safe open position, the position switch 310 switches from the first state to the second state. At this time, the position switch 310 sends a trigger signal to open the second back door 200. For example, the trigger signal can be an electrical signal that connects the signal loop. When the controller detects an electrical signal that closes the loop, it determines that the first back door has opened to the safe open position, and then opens the second back door.

[0042] The tailgate assembly 10 of this application embodiment has a triggering device 300 at the end of the second tailgate 200 near the first tailgate 100. The triggering device 300 includes a position switch 310, and the state change of the position switch 310 is related to the position change of the first tailgate 100. When the first tailgate 100 is in the closed position or between the closed position and the safe open position, the position switch 310 is always in the first state. At this time, the second tailgate 200 is not opened. When the first tailgate 100 moves to the safe open position, the position switch 310 switches from the first state to the second state and sends a trigger signal. At this time, after receiving the trigger signal, the controller controls the second tailgate 200 to open. In this way, a door opening process can be formed in which the first back door 100 is opened to the safe opening position first, and then the second back door 200 is opened. Users do not need to rely on experience to judge, but can judge that the first back door 100 has completely left the interference area based on the trigger signal of the second state, so as to prevent interference and collision between the first back door 100 and the second back door 200, thereby improving the safety and reliability of opening the first back door 100 and the second back door 200.

[0043] Furthermore, when no trigger signal is received, it indicates that the first back door 100 has not reached the safe opening position. At this time, the second back door 200 can be controlled to remain in the closed position, such as keeping the second back door 200 locked. This can prevent hand injuries or door damage caused by user misoperation, thereby further improving the safety and reliability of back door opening and enhancing the user experience.

[0044] In addition, using a position switch 310 to trigger the signal is cost-effective and highly reliable. The trigger signal is not easily affected by electromagnetic interference. Compared with setting precision sensors such as angle sensors, encoders, and Hall sensors, it is also beneficial to reduce costs and improve the stability and reliability of the trigger signal.

[0045] like Figure 5 As shown, in some embodiments, the tailgate assembly 10 further includes a controller (not shown), and the second tailgate 200 includes a drive unit 260. The controller is electrically connected to the position switch 310 and the drive unit 260 of the second tailgate 200. Thus, when a trigger signal is sent to the controller, the second tailgate 200 can be directly controlled to open, thereby improving the automation and intelligence of tailgate opening.

[0046] In some embodiments, the position switch 310 is one of a contact limit switch or a photoelectric switch, wherein the contact limit switch is a normally open switch or a normally closed switch.

[0047] Contact-type limit switches are limit switches that rely on physical contact force to change their state. They are divided into normally open switches and normally closed switches. A normally open switch is in the de-energized state (first state) when no external force is applied. When subjected to external force, it deforms, changing from the de-energized state to the energized state (second state). After the external force disappears, it automatically returns to its original position, changing from the energized state back to the de-energized state. "Open" refers to a break in the circuit (open circuit). A normally closed switch is the opposite; "closed" refers to a closed circuit (closed circuit).

[0048] It is understandable that the contact limit switch needs a certain travel distance to switch from the first state to the second state. The travel distance of the contact limit switch can be linearly proportional to the opening angle of the first back door 100 between the closed position and the safe open position. When the first back door 100 gradually opens from the closed position to the safe open position, the contact limit switch switches from the first state to the second state.

[0049] Whether it is a normally open or normally closed contact limit switch, it can be associated with the opening position of the first back door 100 through structural design, which will be explained in detail later.

[0050] The photoelectric switch is a non-contact detection solution. For example, a light shield can be set on one of the first back door 100 and the second back door 200, and a photoelectric switch can be set on the other. Then, the first back door 100 can be determined to have reached the safe opening position by blocking or transmitting the light beam of the photoelectric switch during the movement. The photoelectric switch can detect the change of the light beam to realize the state switching, thereby sending a trigger signal.

[0051] This configuration allows for precise detection of whether the first back door 100 has reached the safe opening position, and converts this mechanical position information into a clear electrical signal. This helps improve the safety and reliability of the back door opening, reduce costs, and improve the stability and reliability of the trigger signal.

[0052] Optionally, the contact limit switch can be a mechanical limit switch, a pneumatic limit switch, or any type of contact limit switch available on the market; this application does not impose any restrictions on this.

[0053] like Figures 3 to 6 As shown, in some embodiments, the first back door 100 includes a lock body 110, at least a portion of which is located on one side edge of the first back door 100 near the second back door 200. The second back door 200 forms a first chamber 201, in which a latch 210 is provided. The top of the second back door 200 has a first opening 202 opposite to the latch 210. The triggering device 300 also includes a movable plate 320, which is rotatably disposed in the first opening 202. When the first back door 100 is rotated from the safe open position to the closed position, the movable plate 320 is rotated from the initial position to the avoidance position under the abutment of the lock body 110. When the movable plate 320 is in the initial position, it blocks the first opening 202. The position switch 310 is a contact limit switch, which is disposed in the first chamber 201 and located on the movement path of the movable plate 320.

[0054] This embodiment proposes a specific linkage method between the state switching of the position switch 310 and the change of the opening position of the first rear door 100. The position switch 310 is a contact-type limit switch.

[0055] The movable plate 320 can rotate between an initial position and a clearance position. In the initial position, the movable plate 320 blocks the first opening 202; when the first back door 100 rotates from the safe open position to the closed position, the lock body 110 contacts the movable plate 320 and generates an abutting force until the lock body 110 and the latch 210 are locked. Under the push of the lock body 110, the movable plate 320 rotates from the initial position to the clearance position, and the position switch 310 is located on the movement path of the movable plate 320.

[0056] Thus, when the movable plate 320 rotates between the initial position and the avoidance position, the position switch 310 can switch between the second state and the first state. That is, the movement of the lock body 110 of the first back door 100 will drive the movable plate 320 to rotate, and the rotation of the movable plate 320 realizes the state switching of the position switch 310. Thus, the state switching of the position switch 310 and the opening and closing action of the first back door 100 are linked, which helps to improve the reliability and stability of the trigger signal.

[0057] Furthermore, when the lock body 110 of the first back door 100 is not in contact with the movable plate 320, it indicates that the first back door 100 is in the open state. At this time, the movable plate 320 is in its initial position and can block the first opening 202, while the contact-type limit switch is installed in the first chamber 201. In this way, when the first back door 100 is open, the movable plate 320 can form a sealed protection for the components in the first chamber 201, thereby improving the overall environmental tolerance and service life of the position switch 310.

[0058] like Figures 3 to 6 As shown, in some embodiments, the triggering device 300 further includes an elastic reset member 330, which is disposed on the pivot 3201 of the movable plate 320 or between the movable plate 320 and the second back door 200. The elastic reset member 330 is used to cause the movable plate 320 to have a tendency to reset to the initial position.

[0059] When the elastic reset member 330 is located on the rotating shaft 3201 of the movable plate 320, the elastic reset member 330 can be a torsion spring; when the elastic reset member 330 is located between the movable plate 320 and the second back door 200, the elastic reset member 330 can be a torsion spring or a compression spring.

[0060] With this configuration, when the first back door 100 rotates from the closed position to the fully open position, after the lock body 110 disengages, the movable plate 320 can be reset from the avoidance position to the initial position under the drive of the elastic force. This ensures the repeatability and automation of the triggering cycle. Furthermore, the continuous reset force provided by the elastic reset member 330 ensures that the movable plate 320 is tightly against the edge of the first opening 202 in the initial position, thereby further improving the sealing of the first chamber 201 and thus extending the service life of the position switch 310.

[0061] The position switch 310 is located on the movement path of the movable plate 320. The position switch 310 can be either a normally closed contact limit switch or a normally open contact limit switch.

[0062] Specifically, such as Figures 3 to 6 As shown, in some embodiments, when the first back door 100 is in the closed position, the movable plate 320 is in the clearance position and the movable plate 320 is pressed against the position switch 310 so that the position switch 310 is maintained in the first state (power off state). When the first back door 100 rotates from the closed position to the safe open position, the movable plate 320 rotates from the clearance position to the initial position and the movable plate 320 separates from the position switch 310 so that the position switch 310 switches from the first state to the second state (power on state).

[0063] In this case, the position switch 310 is a normally closed contact limit switch. When the first back door 100 is in the closed position, the position switch 310 is in the first de-energized state due to the pressure of the movable plate 320; when the first back door 100 is rotated from the closed position to the safe open position, the position switch 310 is reset due to the lack of force, returns to the second energized state, and sends a trigger signal.

[0064] This configuration helps reduce the complexity of the control logic and improve the reliability and stability of the system.

[0065] Alternatively, in some other embodiments, when the first back door 100 is in the closed position, the movable plate 320 is in the avoidance position and the movable plate 320 is separated from the position switch 310. The position switch 310 is in the first state. When the first back door 100 rotates from the closed position to the safe open position, the movable plate 320 rotates from the avoidance position to the initial position and the movable plate 320 presses against the position switch 310, so that the position switch 310 switches from the first state to the second state.

[0066] In this configuration, position switch 310 is a normally open contact limit switch. When the first back door 100 is in the closed position, position switch 310 is in the first de-energized state due to the pressure from the movable plate 320; when the first back door 100 rotates from the closed position to the safe open position, position switch 310 is switched to the second energized state due to the pressure from the movable plate 320 and sends a trigger signal.

[0067] This configuration helps reduce the complexity of the control logic and improve the reliability and stability of the system.

[0068] like Figures 3 to 6 As shown, in some embodiments, the second back door 200 includes an inner panel 220, an outer panel 230, and a top panel 240. The inner panel 220 and the outer panel 230 are connected, and the top panel 240 is located on top of the outer panel 230. The first chamber 201 includes a first sub-chamber 2011 located between the inner panel 220 and the outer panel 230, and a second sub-chamber 2012 located between the top panel 240 and the outer panel 230. A first opening 202 is located on the top panel 240. A movable plate 320 is rotatably connected to the top panel 240. The top of the outer panel 230 has a second opening 2301 opposite to the first opening 202. A latch 210 is located in the first sub-chamber 2011. A position switch 310 is located in the second sub-chamber 2012. The position switch 310 is located on one side of the pivot 3201 of the movable plate 320 and is connected to the top panel 240.

[0069] This embodiment presents a specific structure for the first back door 100 to be equipped with a trigger device 300. The inner plate 220 and the outer plate 230 form a first sub-cavity 2011, which houses components such as a latch 210 and a drive component 260. A second sub-cavity 2012 is formed between the top of the top plate 240 and the top of the outer plate 230. A movable plate 320 is rotatably connected to the top plate 240. A position switch 310 is located within the second sub-cavity 2012 and is connected to the top plate 240. Thus, depending on the installation position of the position switch 310 within the second sub-cavity 2012, the position switch 310 can be either a normally open or normally closed limit switch.

[0070] Specifically, the point where the movable plate 320 is subjected to the abutment of the lock body 110 is located on the side of the movable plate 320's pivot 3201 closest to the inner plate 220. For example... Figure 5 and Figure 6 As shown, when the position switch 310 is selected as a normally closed limit switch, the position switch 310 can be installed on the top plate 240 and located on the side of the rotating shaft 3201 of the movable plate 320 near the outer plate 230. Thus, when the first back door 100 is closed, the lock body 110 abuts the movable plate 320 to a clearance position, and part of the movable plate 320 extends into the first sub-chamber 2011. When the movable plate 320 rotates, it presses against the position switch 310, causing the position switch 310 to be pressed and in the first state; when the first back door 100 is opened to the safe open position, the movable plate 320 is reset to its initial position under the force of the elastic reset member 330, the force on the position switch 310 is released, and it switches to the second state.

[0071] When the position switch 310 is selected as a normally open limit switch, the position switch 310 can be installed on the top plate 240 and located on the side of the rotating shaft 3201 of the movable plate 320 near the inner plate 220. In this way, when the first back door 100 is closed, the lock body 110 abuts the movable plate 320 to the clearance position. When the movable plate 320 rotates, it will release the pressure from the position switch 310, so that the position switch 310 is not under force and is in the first state. When the first back door 100 is opened to the safe opening position, the movable plate 320 is reset to the initial position under the force of the elastic reset member 330 and gradually presses against the position switch 310, so that the position switch 310 switches to the second state.

[0072] This embodiment, through the above design, enables the linkage between the state change of the position switch 310 and the opening position change of the first back door 100. This configuration, firstly, through the physical separation of the first sub-chamber 2011 and the second sub-chamber 2012, isolates the latch 210, drive component 260, etc., from the triggering device 300, thereby mitigating the impact of vibration, impact, and installation / maintenance on the triggering device 300, and thus improving the reliability and service life of the triggering device 300. Secondly, the top plate 240 integrates the movable plate 320, position switch 310, and elastic reset component 330. These components can be pre-installed and debugged as independent modules before being combined with other structures of the second back door, thus simplifying the assembly process and improving production efficiency. Furthermore, the above structure allows for the flexible selection of both normally open and normally closed limit switches, enabling the same mechanical structure to flexibly adapt to different circuit control and safety logic requirements, and also improving the versatility and design expandability of the triggering device 300.

[0073] like Figure 6 As shown, in some embodiments, the second back door 200 further includes a reinforcing plate 250 disposed within the first sub-chamber 2011, and the latch 210 is connected to the reinforcing plate 250. This arrangement not only improves the strength and reliability of the second back door 200, but also improves the stability and strength of the latch 210 installation.

[0074] Secondly, embodiments of this application propose a vehicle including the tailgate assembly 10 described in the first aspect. This improves the safety and reliability of the first tailgate 100 and the second tailgate 200 when they are opened, thus enhancing the user experience.

[0075] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A tailgate assembly for a vehicle, the vehicle body having a rearward opening, characterized in that, The tailgate assembly includes: Both the first tailgate and the second tailgate are capable of rotating relative to the vehicle body. When the first tailgate and the second tailgate are in the closed position, the opening is closed. The end of the first tailgate away from the axis of rotation is attached to the outside of the second tailgate. The first tailgate also has a safe open position. A triggering device is provided on the side of the second back door close to the first back door. The triggering device includes a position switch, which has a first state and a second state. Specifically, when the first back door is in the closed position, the position switch remains in the first state; when the first back door is rotated from the closed position to the safe open position, the position switch switches from the first state to the second state and outputs a trigger signal.

2. The tailgate assembly according to claim 1, characterized in that, The position switch is one of a contact limit switch or a photoelectric switch; The contact-type limit switch is either a normally open switch or a normally closed switch.

3. The tailgate assembly according to claim 1, characterized in that, The first back door includes a lock body, at least a portion of which is located on one edge of the first back door near the second back door; The second back door has a first chamber, and a latch is provided in the first chamber. The top of the second back door has a first opening opposite to the latch. The triggering device also includes a movable plate, which is rotatably disposed at the first opening. When the first back door is rotated from the safe open position to the closed position, the movable plate rotates from the initial position to the avoidance position under the abutment action of the lock body. When the movable plate is in the initial position, it blocks the first opening. The position switch is a contact-type limit switch, which is located in the first chamber and on the movement path of the movable plate.

4. The tailgate assembly according to claim 3, characterized in that, When the first back door is in the closed position, the movable plate is in the avoidance position, and the movable plate is pressed against the position switch so that the position switch is maintained in the first state; When the first back door rotates from the closed position to the safe open position, the movable plate rotates from the avoidance position to the initial position, and the movable plate separates from the position switch, so that the position switch switches from the first state to the second state.

5. The tailgate assembly according to claim 3, characterized in that, When the first back door is in the closed position, the movable plate is in the avoidance position, and the movable plate is separated from the position switch, and the position switch is in the first state; When the first back door rotates from the closed position to the safe open position, the movable plate rotates from the avoidance position to the initial position, and the movable plate presses against the position switch, so that the position switch switches from the first state to the second state.

6. The tailgate assembly according to claim 3, characterized in that, The triggering device further includes an elastic reset member, which is disposed on the pivot of the movable plate or between the movable plate and the second back door; The elastic reset member is used to cause the movable plate to tend to reset to the initial position.

7. The tailgate assembly according to claim 3, characterized in that, The second back door includes an inner panel, an outer panel, and a top panel, wherein the inner panel and the outer panel are connected, and the top panel is located on top of the outer panel; The first chamber includes a first sub-chamber disposed between the inner plate and the outer plate and a second sub-chamber disposed between the top plate and the outer plate. The first opening is disposed on the top plate. The movable plate is rotatably connected to the top plate. The top of the outer plate is provided with a second opening opposite to the first opening. The latch is disposed in the first sub-chamber. The position switch is located in the second sub-cavity, on one side of the rotating shaft of the movable plate, and is connected to the top plate.

8. The tailgate assembly according to claim 7, characterized in that, The second back door also includes a reinforcing plate disposed in the first sub-cavity, and the latch is connected to the reinforcing plate.

9. The tailgate assembly according to claim 1, characterized in that, The tailgate assembly also includes a controller, and the second tailgate also includes a drive unit. The drive unit and the position switch are both electrically connected to the controller.

10. A vehicle, characterized in that, Includes the tailgate assembly as described in any one of claims 1-9.

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