Movable tail door for vehicle

Abstract

The utility model discloses an automotive movable tail door which comprises a movable top cover, and two movable control mechanisms are symmetrically arranged at the bottom of the movable top cover. The movable control mechanism comprises a motor lock catch, a driving mechanism, a driving push rod and a fixed base, the top of the motor lock catch is fixedly connected with the movable top cover, and the fixed base is fixedly connected with the vehicle body; the driving mechanism is movably matched with the motor lock catch and the fixed base respectively; the driving push rod is connected with the driving mechanism, and the bottom is connected with the fixed base. By means of the motor lock catch, the driving mechanism, the driving push rod and the like, automatic opening and closing of the tail door are achieved, and the automation degree is remarkably improved; the motor lock catch effectively prevents the tail door from being accidentally opened in the driving process, and the driving safety is enhanced; in addition, due to the modular design, maintenance is easier and more convenient, the maintenance cost is reduced, meanwhile, adaptability is high, the device is suitable for various vehicle types, and good universality and practicability are shown.

Description

Technical Field

[0001] This utility model relates to the field of automobile manufacturing and processing technology, specifically to a movable tailgate for vehicles. Background Technology

[0002] A car tailgate is an openable door at the rear of a vehicle used for accessing the luggage compartment or cargo space. The main function of the tailgate is to provide access to the rear storage space of the vehicle, facilitating the loading and unloading of items such as luggage, shopping bags, and sports equipment. The tailgate design must consider safety, ensuring it won't open accidentally while driving, and also protecting passengers from injury in the event of a collision. For family cars or users who frequently transport goods, the tailgate design directly impacts the vehicle's practicality and convenience.

[0003] Traditional car tailgates are mostly manually operated. While simple in structure, they have several shortcomings in practical use. First, manually opening the tailgate is time-consuming and laborious, especially for the elderly or those with weaker physical strength. Second, manual tailgates are less safe, particularly while driving. The lack of an effective locking mechanism poses a risk of accidental opening, which could lead to cargo falling out and threaten driving safety. Utility Model Content

[0004] To address the shortcomings of traditional tailgates, such as inconvenience and poor safety due to manual operation, this utility model provides a vehicle sliding tailgate with a simpler, more intelligent, and safer control and locking mechanism.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] A movable tailgate for vehicles includes a movable top cover with two symmetrically arranged movable control mechanisms at the bottom of the top cover. Each movable control mechanism includes a motor latch, a drive mechanism, a drive push rod, and a fixed base. The top of the motor latch is fixedly connected to the movable top cover, and the fixed base is fixedly connected to the vehicle body. The drive mechanism is movably engaged with both the motor latch and the fixed base. The top telescopic end of the drive push rod is rotatably connected to the drive mechanism, and the bottom is rotatably connected to the fixed base.

[0007] When the movable top cover is in the closed position, the motor latch cooperates with the drive mechanism to keep the drive mechanism locked. When unlocking, the motor latch is opened, releasing the drive mechanism from its locked state. At this time, the drive push rod is retracted inward, that is, the length of the drive push rod is shortened. The drive push rod drives the drive mechanism to move, which can drive the movable top cover to rise and open forward, completing the tailgate opening operation. Conversely, the tailgate can be closed.

[0008] Furthermore, the motor latch includes a motor, a hook base, a first hook, a first hook connecting rod, a second hook connecting rod, and a second hook. The motor and hook base are rigidly fixed to the movable top cover. The first hook is movably connected to the hook base, and the second hook is movably connected to the drive mechanism. The motor shaft is connected to a motor wheel. The hook base is rotatably hinged to the first hook. The first hook and the first hook connecting rod are rotatably hinged together, with the other end of the first hook connecting rod rotatably hinged to the second hook. The second hook is rotatably hinged to the drive mechanism. One end of the second hook connecting rod is rotatably hinged to the first hook connecting rod, and the other end is rotatably hinged to the motor wheel. In operation, the motor shaft rotates forward, which in turn drives the motor wheel to rotate. The rotation of the motor wheel moves the second locking hook linkage, which in turn moves the first locking hook linkage via a hinge point. This causes the first and second locking hooks at both ends of the first locking hook linkage to disengage from the locking hook base and the drive mechanism, respectively, releasing the locking state of the drive mechanism. Conversely, the reverse operation enables the locking of the drive mechanism. The motor lock cleverly integrates the motor, locking hook base, locking hooks, and their linkages into a compact structure with minimal space requirements, optimizing the vehicle's internal layout. Furthermore, the rotational hinges between the motor wheel and each linkage ensure the accuracy and reliability of the locking hook's action, reducing the possibility of mechanical failure and improving system stability.

[0009] Furthermore, the motor rotor is a cam, and the second locking hook is fixedly connected to the cam. The cam design of the motor rotor allows for adjustment according to different usage requirements. By changing the shape and size of the cam, different motion characteristics and force outputs can be achieved, enabling the design to better adapt to the needs of different vehicle models and usage scenarios. This provides more precise motion control, ensuring that the second locking hook accurately engages or disengages with the second rocker arm at a specific position, improving the reliability and accuracy of locking and unlocking operations. Simultaneously, the cam has good wear resistance and durability, and its motion characteristics determine that it can provide smooth and continuous force output during rotation, avoiding the jerking sensation that may occur with traditional gear transmissions. This makes the opening and closing process of the tailgate smoother, improving the user experience.

[0010] Furthermore, the drive mechanism includes a first rocker arm, a second rocker arm, and a mounting plate, wherein the second locking hook is movably engaged with the middle of the second rocker arm; the first rocker arm is arc-shaped, with its left end rotatably hinged to the end of the extension and retraction of the drive push rod, and its right end rotatably hinged to the left side of the mounting plate, wherein the right end of the mounting plate is rotatably hinged to the right side of the second rocker arm; the left end of the second rocker arm is rotatably hinged to the middle of the fixed base, and the right side of the fixed base is rotatably hinged to the fixed end of the drive push rod. The second locking hook can movably engage with the middle of the second rocker arm to lock and unlock the motor latch. When the second locking hook is connected to the second rocker arm, it is in the locked state; otherwise, it is in the unlocked state. When the tailgate is opened, the motor latch is first opened, which activates the motor, controlling the second locking hook to disengage from the second rocker arm. Then, the movable end of the drive push rod retracts. During this retraction, the left end of the first rocker arm rotates around the hinge point on the left side of the fixed base, simultaneously lifting the bottom end of the second rocker arm around the hinge point on the fixed base. At this point, the first and second rocker arms synchronously drive the movable top cover to rise and open forward, completing the tailgate opening operation. Conversely, the tailgate closing operation can be achieved by retracting the first and second rocker arms. The drive mechanism formed by the first and second rocker arms and the mounting plate makes the entire system compact, occupies little space, optimizes the vehicle's internal layout, helps reduce vehicle weight, and improves fuel economy. Furthermore, the arc-shaped design of the first and second rocker arms, as well as the rotational hinges between components, ensures the precision and reliability of the drive mechanism's operation, reduces the possibility of mechanical failure, and improves system stability.

[0011] Furthermore, the locking hook base is fixedly equipped with a first locking buckle that engages with the first locking hook; the middle part of the second rocker arm is provided with a second locking buckle that engages with the second locking hook. When the first locking hook is connected to the first locking buckle and the second locking hook is connected to the second locking buckle, the motor locking buckle is in the locked state, and the drive mechanism cannot operate at this time; otherwise, it is in the unlocked state.

[0012] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0013] 1. This utility model, by introducing components such as a motor latch, a drive mechanism, and a drive push rod, realizes the automatic opening and closing of the tailgate, significantly improving the convenience and automation of use. This design not only effectively prevents the tailgate from being accidentally opened during driving, enhancing driving safety, but also provides more operating space by opening forward, making it easier to load and unload goods. In addition, the modular design makes maintenance simpler and reduces repair costs, while being highly adaptable and suitable for various vehicle models, demonstrating good versatility and practicality.

[0014] 2. This utility model's locking mechanism cleverly integrates the motor, locking hook base, locking hook, and its connecting rods into a compact structure with minimal space occupation, optimizing the vehicle's internal layout. Furthermore, the rotational hinge between the motor wheel and each connecting rod ensures the precision and reliability of the locking hook's action, reducing the possibility of mechanical failure and improving system stability. The motor wheel uses a cam, possessing good wear resistance and durability. During rotation, it provides smooth and continuous force output, avoiding the jerking sensation that may occur with traditional gear transmissions, resulting in a smoother opening and closing process for a better user experience.

[0015] 3. The drive mechanism formed by the first rocker arm, the second rocker arm, and the mounting plate of this utility model makes the entire system structure compact, occupies little space, optimizes the internal layout of the vehicle, helps to reduce the weight of the vehicle body, and improves fuel economy. Furthermore, the arc-shaped design of the first and second rocker arms, as well as the rotational hinges between the components, ensures the accuracy and reliability of the drive mechanism's operation, reduces the possibility of mechanical failure, and improves the stability of the system. Attached Figure Description

[0016] Figure 1 This is an exploded view of the overall structure of a vehicle's movable tailgate.

[0017] Figure 2 This is a three-dimensional structural diagram of a motor latch for a vehicle's movable tailgate.

[0018] Figure 3 This is a three-dimensional structural diagram of a vehicle tailgate drive mechanism.

[0019] Figure 4 This is a three-dimensional structural diagram of a drive push rod for a vehicle's movable tailgate.

[0020] Figure 5 This is a three-dimensional structural diagram of a mounting base for a vehicle's movable tailgate.

[0021] Figure 6 This is a three-dimensional structural diagram of a vehicle's movable tailgate in the locked state.

[0022] Figure 7 yes Figure 6 Enlarged schematic diagram of the structures at points A and B in the locked state.

[0023] Figure 8 yes Figure 6 Enlarged schematic diagrams of the structures at points A and B when the locking state is released.

[0024] Figure 9 This is a schematic diagram showing the coordination relationship of various mechanisms in the opening process of a vehicle's movable tailgate.

[0025] Attached image labels:

[0026] 1. Movable top cover; 2. Motor latch; 3. Motor; 4. Hook base; 5. First hook; 6. First hook connecting rod; 7. Second hook connecting rod; 8. Second hook; 9. Motor wheel; 10. Drive mechanism; 11. First rocker arm; 12. Second rocker arm; 13. Second latch; 14. Mounting plate; 15. Drive push rod; 16. Fixed base; 17. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings.

[0028] Example 1: A movable tailgate for vehicles includes a movable top cover 1, with two movable control mechanisms symmetrically arranged at the bottom of the movable top cover 1; each movable control mechanism includes a motor latch 2, a drive mechanism 3, a drive push rod 4, and a fixed base 5, wherein the top of the motor latch 2 is fixedly connected to the movable top cover 1, and the fixed base 5 is fixedly connected to the vehicle body; the drive mechanism 3 is movably engaged with both the motor latch 2 and the fixed base 5; the telescopic end of the top of the drive push rod 4 is rotatably connected to the drive mechanism 3, and the bottom is rotatably connected to the fixed base 5.

[0029] When the movable top cover 1 is in the closed position, the motor latch 2 cooperates with the drive mechanism 3 to keep the drive mechanism 3 locked. When unlocking, the motor latch 2 is opened, and the motor latch 2 releases the lock of the drive mechanism 3. At this time, the drive push rod 4 is retracted inward, that is, the length of the drive push rod 4 is shortened. The drive push rod 4 drives the drive mechanism 3 to move, which can drive the movable top cover 1 to rise and open forward, completing the tailgate opening operation. Conversely, the tailgate can be closed.

[0030] Example 2: Unlike Example 1, the motor latch 2 includes a motor 21, a hook base 22, a first hook 23, a first hook connecting rod 24, a second hook connecting rod 25, and a second hook 26. The motor 21 and hook base 22 are rigidly fixed to the movable top cover 1. The first hook 23 is movably connected to the hook base 22, and the second hook 26 is movably connected to the drive mechanism 3. The motor 21's shaft is connected to a motor wheel 27. The hook base 22 is rotatably hinged to the first hook 23. The first hook 23 and the first hook connecting rod 24 are rotatably hinged together, with the other end of the first hook connecting rod 24 rotatably hinged to the second hook 26. The second hook 26 is rotatably hinged to the drive mechanism 3. One end of the second hook connecting rod 25 is rotatably hinged to the first hook connecting rod 24, and the other end is rotatably hinged to the motor wheel 27. (Reference) Figure 6When in use, the motor 21 shaft rotates clockwise, as shown in the diagram, which in turn drives the motor wheel 27 to rotate. When the motor wheel 27 rotates, it drives the second locking hook link 25 to move. The movement of the second locking hook link 25 drives the first locking hook link 24 to move in the direction shown in the diagram through the hinge point. This causes the first locking hook 23 and the second locking hook 26 at both ends of the first locking hook link 24 to disengage from the locking hook base 22 and the drive mechanism 3, respectively, releasing the locking state of the drive mechanism 3. Conversely, it can realize the locking operation of the drive mechanism 3. The motor lock 2 cleverly integrates the motor 21, the locking hook base 22, the locking hook and its link, etc., into a compact structure with a small footprint, optimizing the internal layout of the vehicle. Furthermore, the rotational hinge between the motor wheel 27 and each link ensures the accuracy and reliability of the locking hook action, reduces the possibility of mechanical failure, and improves the stability of the system.

[0031] The locking hook base 22 is fixedly installed with a first locking buckle that cooperates with the first locking hook 23; the middle part of the second rocker arm 32 is provided with a second locking buckle 321 that cooperates with the second locking hook 26. When the first locking hook 23 is connected to the first locking buckle and the second locking hook 26 is connected to the second locking buckle 321, the motor locking buckle 2 is in the locked state, and the drive mechanism 3 cannot operate at this time; otherwise, it is in the unlocked state.

[0032] Example 3: Unlike Example 2, the motor wheel 27 is a cam, and the second locking hook 26 is fixedly connected to the cam. The cam design of the motor wheel 27 allows for adjustment according to different usage requirements. By changing the shape and size of the cam, different motion characteristics and force outputs can be achieved, enabling the design to better adapt to the needs of different vehicle models and usage scenarios. This provides more precise motion control, ensuring that the second locking hook 26 accurately engages or disengages with the second rocker arm 32 at specific positions, improving the reliability and accuracy of locking and unlocking operations. Simultaneously, the cam has good wear resistance and durability, and its motion characteristics determine that it can provide smooth and continuous force output during rotation, avoiding the jerking sensation that may occur with traditional gear transmissions. This makes the opening and closing process of the tailgate smoother, improving the user experience.

[0033] The drive mechanism 3 includes a first rocker arm 31, a second rocker arm 32, and a mounting plate 33. The second locking hook 26 is movably engaged with the middle of the second rocker arm 32. The first rocker arm 31 is arc-shaped, with its left end rotatably hinged to the telescopic end of the drive push rod 4, and its right end rotatably hinged to the left side of the mounting plate 33. The right end of the mounting plate 33 is rotatably hinged to the right side of the second rocker arm 32. The left end of the second rocker arm 32 is rotatably hinged to the middle of the fixed base 5, and the right side of the fixed base 5 is rotatably hinged to the fixed end of the drive push rod 4. The second locking hook 26 movably engages with the middle of the second rocker arm 32, enabling the locking and unlocking operations of the motor latch 2. When the second locking hook 26 is connected to the second rocker arm 32, it is in a locked state; otherwise, it is in an unlocked state. When the tailgate is opened, the motor latch 2 is opened first, which then opens the motor 21, controlling the second locking hook 26 to disengage from the second rocker arm 32. Figure 9 Then, the movable end of the control drive push rod 4 retracts. During the retraction process, the left end of the first rocker arm 31 rotates and lifts around the hinge point on the left side of the fixed base 5. At the same time, the bottom end of the second rocker arm 32 rotates and lifts around the hinge point on the fixed base 5. At this time, the first rocker arm 31 and the second rocker arm 32 synchronously drive the movable top cover 1 to rise and open forward, completing the tailgate opening operation. Conversely, the tailgate closing operation can be achieved. The drive mechanism 3 formed by the cooperation of the first rocker arm 31, the second rocker arm 32 and the mounting plate 33 makes the entire system structure compact, occupies little space, optimizes the vehicle's internal layout, helps to reduce vehicle weight, and improves fuel economy. Moreover, the arc design of the first rocker arm 31 and the second rocker arm 32, as well as the rotational hinge between the components, ensures the accuracy and reliability of the drive mechanism 3's operation, reduces the possibility of mechanical failure, and improves the system's stability.

[0034] Numerous specific details are set forth in this specification. However, it will be understood that embodiments of this invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. A movable tailgate for vehicles, characterized in that: The device includes a movable top cover (1), and two movable control mechanisms are symmetrically arranged at the bottom of the movable top cover (1). The movable control mechanism includes a motor latch (2), a drive mechanism (3), a drive push rod (4), and a fixed base (5). The top of the motor latch (2) is fixedly connected to the movable top cover (1), and the fixed base (5) is fixedly connected to the vehicle body. The drive mechanism (3) is movable and cooperates with the motor latch (2) and the fixed base (5) respectively. The telescopic end of the top of the drive push rod (4) is rotatably connected to the drive mechanism (3), and the bottom is rotatably connected to the fixed base (5).

2. A movable tailgate for vehicles as described in claim 1, characterized in that: The motor latch (2) includes a motor (21), a hook base (22), a first hook (23), a first hook connecting rod (24), a second hook connecting rod (25), and a second hook (26). The motor (21) and the hook base (22) are rigidly fixed on the movable top cover (1). The first hook (23) is movably connected to the hook base (22), and the second hook (26) is movably connected to the drive mechanism (3). The motor (21) has a motor wheel connected to its shaft. (27); The locking hook base (22) is rotatably hinged to the first locking hook (23); The first locking hook (23) is rotatably hinged to the first locking hook link (24), wherein the other end of the first locking hook link (24) is rotatably hinged to the second locking hook (26); The second locking hook (26) is rotatably hinged to the drive mechanism (3); One end of the second locking hook link (25) is rotatably hinged to the first locking hook link (24), and the other end is rotatably hinged to the motor wheel (27).

3. A movable tailgate for vehicles as described in claim 2, characterized in that: The motor wheel (27) is a cam, and the second locking hook (26) is fixedly connected to the cam.

4. A movable tailgate for vehicles as described in claim 3, characterized in that: The drive mechanism (3) includes a first rocker arm (31), a second rocker arm (32), and a mounting plate (33), wherein the second locking hook (26) is movably engaged with the middle part of the second rocker arm (32); the first rocker arm (31) is arc-shaped, with its left end rotatably hinged to the telescopic end of the drive push rod (4), and its right end rotatably hinged to the left side of the mounting plate (33), wherein the right end of the mounting plate (33) is rotatably hinged to the right side of the second rocker arm (32); the left end of the second rocker arm (32) is rotatably hinged to the middle part of the fixed base (5), and the right side of the fixed base (5) is rotatably hinged to the fixed end of the drive push rod (4).

5. A movable tailgate for vehicles as described in claim 4, characterized in that: The base (22) of the lock hook is fixedly installed with a first latch that cooperates with the first lock hook (23); the middle part of the second rocker arm (32) is provided with a second latch (321) that cooperates with the second lock hook (26).

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