Turnover type back door structure and vehicle

Abstract

The utility model provides a turnover type back door structure and a vehicle, and belongs to the technical field of vehicle back door structures, the turnover type back door structure comprises a lower back door assembly, a hinge assembly, a driving assembly and a fixing assembly, and the front side of the lower back door assembly is provided with a reinforcing part protruding forwards; the hinge assembly is connected to the bottom of the reinforcing part; the driving assembly comprises a driver and a driving supporting rod connected to the driver, the driver is used for driving the driving supporting rod to stretch out and draw back in the axial direction of the driving supporting rod, and mounting grooves are formed in the fixed end and the telescopic end of the driving supporting rod; the fixing assembly comprises a plurality of fixing mechanisms, the fixing mechanisms and the mounting grooves are arranged in a one-to-one correspondence mode, the fixing mechanisms are provided with fixing parts and connecting parts rotationally inserted into the mounting grooves, the fixing parts are used for being connected with the lower back door assembly or the automobile body, and the connecting parts are matched with the mounting grooves. The utility model provides a turnover type back door structure and a vehicle, and aims to solve the problem that a lower back door of a vehicle in the prior art is easy to be blocked when being opened and closed, so that the lower back door is not smooth to open and close.

Description

Technical Field

[0001] This utility model belongs to the technical field of vehicle tailgate structure, and more specifically, it relates to a flip-up tailgate structure and a vehicle. Background Technology

[0002] Most existing vehicles use upward-swinging hatchback tailgates, which have a small trunk opening when statically open, making them unsuitable for outdoor leisure applications. To increase the trunk opening space when the tailgate is open, some vehicles use split tailgates, consisting of an upward-opening upper tailgate and a downward-opening lower tailgate. Depending on the actual needs, one can choose to open the upper tailgate or the lower tailgate individually, or both tailgates can be opened simultaneously.

[0003] Most split-opening tailgates on the market currently use a manual lower tailgate, which is less convenient and requires some physical effort. While some vehicles have implemented automatic lower tailgate opening systems, the rigid support rods can cause the tailgate to jam during opening or closing, affecting its operation. Some vehicles use cables to drive the lower tailgate to ensure smooth operation. However, cables are flexible components, and long-term deformation can increase wear and tear, affecting their lifespan. Furthermore, the complex structure of the cable-driven system increases costs. Utility Model Content

[0004] The purpose of this utility model is to provide a flip-up tailgate structure and vehicle, which aims to solve the problem that the tailgate of a vehicle is prone to jamming when opening and closing, resulting in the tailgate not opening and closing smoothly.

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

[0006] Firstly, a flip-up rear door structure is provided, comprising:

[0007] The lower tailgate assembly has a forward-protruding reinforcement on the front side;

[0008] A hinge assembly is connected to the bottom of the reinforcement, and the hinge assembly is used for rotatable connection with the vehicle body;

[0009] A drive assembly includes a driver and a drive strut connected to the driver. The drive strut is a telescopic member. The driver drives the drive strut to extend and retract along its own axial direction. Both the fixed end and the telescopic end of the drive strut are provided with mounting grooves, which are spherical grooves.

[0010] The fixing component includes multiple fixing mechanisms, each corresponding to a mounting slot. Each fixing mechanism has a fixing part and a connecting part that is rotatably inserted into the mounting slot. The fixing part is used to connect with the lower tailgate assembly or the vehicle body, and the connecting part is adapted to the mounting slot.

[0011] In conjunction with the first aspect, in one possible implementation, the fixing mechanism includes:

[0012] The mounting bracket has connecting holes and fixing holes;

[0013] A connector, one end of which is inserted into the connecting hole, and the other end having a ball head adapted to the mounting groove, the ball head forming the connecting portion; and

[0014] The fastener includes a limiting piece and a fixing rod connected to the limiting piece. The fixing rod is inserted into the fixing hole and forms the fixing part. The limiting piece abuts against the fixing frame.

[0015] In conjunction with the first aspect, in one possible implementation, the fixing frame includes a first fixing plate and a second fixing plate distributed at an angle, the connecting hole being formed in the first fixing plate and the fixing hole being formed in the second fixing plate.

[0016] In conjunction with the first aspect, in one possible implementation, the mounting bracket has a protruding reinforcing boss, and the fixing hole is formed in the reinforcing boss.

[0017] In conjunction with the first aspect, in one possible implementation, the fixing mechanism includes:

[0018] The connector has a fixing portion at one end for connection to the vehicle body or the lower tailgate assembly, and a connecting portion at the other end. The outer peripheral surface of the connector also has a radially protruding reinforcing portion.

[0019] A limiting gasket is fitted over the connector and abuts against the reinforcing part along the axial direction.

[0020] In conjunction with the first aspect, in one possible implementation, the hinge assembly includes:

[0021] A hinge seat, connected to the bottom of the reinforcing part, is provided with a receiving groove; and

[0022] The articulated arm is rotatably inserted into the receiving groove and rotatably connected to the articulated seat about a first axis parallel to the left and right direction. The articulated arm is used to connect to the vehicle body.

[0023] In conjunction with the first aspect, in one possible implementation, the lower tailgate assembly includes an outer tailgate panel and an inner tailgate panel connected to the outer tailgate panel, with a receiving cavity formed between the outer tailgate panel and the inner tailgate panel. The lower tailgate assembly also includes a tailgate reinforcing plate disposed within the receiving cavity and connected to the inner tailgate panel. The tailgate reinforcing plate has a mounting position, and the inner tailgate panel has a clearance hole corresponding to the mounting position. The mounting position is connected to a mounting bracket for fixing a lock, and the mounting bracket extends through the clearance hole toward the front side of the inner tailgate panel.

[0024] In conjunction with the first aspect, in one possible implementation, the mounting bracket includes a fixing part connected to the mounting position and a mounting part connected at an angle to the fixing part, the mounting part extending through the clearance hole toward the front side of the inner panel of the back door, the mounting part being used to fix a lock.

[0025] In conjunction with the first aspect, in one possible implementation, the rear door reinforcing plate has a central groove and fixing grooves symmetrically distributed on both sides of the central groove in the left-right direction. The central groove and the fixing grooves are spaced apart in the left-right direction, and both the central groove and the fixing grooves are recessed to the rearward side. The mounting position is located in the fixing groove.

[0026] The advantages of the flip-up tailgate structure provided by this utility model are as follows: Compared with the prior art, the lower tailgate assembly is rotatably connected to the vehicle body through a hinge assembly. The reinforcing part of the lower tailgate assembly can improve strength and increase resistance to deformation, avoiding the problem of deformation in this area after the hinge assembly is fixed to the reinforcing part. Both ends of the drive strut are connected to the vehicle body and the lower tailgate assembly through fixing mechanisms. Since the drive strut has a spherical mounting groove, the connecting part, after being rotatably inserted into the mounting groove, has three degrees of freedom of rotation, allowing it to rotate flexibly with the opening and closing of the lower tailgate assembly, thus ensuring smooth and unhindered opening and closing. The actuator provides power to the drive strut, ensuring its extension or retraction to achieve the opening and closing of the lower tailgate assembly. This utility model has a simple structure, simplifying the drive structure. It not only ensures smooth opening and closing of the lower tailgate, but also prevents repeated deformation of the rigid structure of the drive strut during movement, improving its service life.

[0027] Secondly, this utility model embodiment also provides a vehicle including the aforementioned flip-up tailgate structure.

[0028] The beneficial effects of the vehicle provided by this utility model are as follows: compared with the prior art, it adopts the above-mentioned flip-up tailgate structure, which has similar technical effects to the above-mentioned flip-up tailgate structure, and will not be described in detail here. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the flip-up rear door structure when closed, provided in an embodiment of the present invention.

[0031] Figure 2 A schematic diagram of the flip-up rear door structure when it is opened, according to an embodiment of the present utility model.

[0032] Figure 3 for Figure 2 Enlarged view of part A in the middle;

[0033] Figure 4 This is a schematic diagram of the fixing mechanism used in the embodiment of this utility model;

[0034] Figure 5 This is another structural schematic diagram of the fixing mechanism used in an embodiment of the present utility model;

[0035] Figure 6 This is a partial schematic diagram of the drive strut used in an embodiment of the present utility model;

[0036] Figure 7 This is a schematic diagram of the structure of the back door reinforcement plate used in an embodiment of this utility model.

[0037] In the diagram: 1. Lower tailgate assembly; 101. Inner tailgate panel; 1011. Reinforcing part; 1012. Clearance hole; 102. Tailgate reinforcing plate; 1021. Center groove; 1022. Fixing groove; 103. Outer tailgate panel; 2. Mounting bracket; 201. Fixing part; 202. Mounting part; 3. Hinge assembly; 301. Hinge seat; 302. Hinge arm; 4. Drive strut; 401. Mounting groove; 402. Baffle; 5. Fixing mechanism; 501. Fixing frame; 5011. First fixing piece; 5012. Second fixing piece; 5013. Reinforcing boss; 502. Connector; 5021. Ball head; 503. Fixing piece; 5031. Limiting piece; 5032. Fixing rod; 504. Connecting piece; 5041. Reinforcing part; 5042. Connecting part; 505. Limiting gasket. Detailed Implementation

[0038] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0039] In the claims, description, and accompanying drawings of this utility model, unless otherwise expressly defined, the terms "first," "second," or "third," etc., are used to distinguish different objects, not to describe a specific order. The directional terms "upper" and "lower" in the claims, description, and accompanying drawings of this utility model correspond to the vertical direction of the vehicle body; the terms "left" and "right" correspond to the horizontal direction of the vehicle body; the terms "front" and "rear" correspond to the front-rear direction of the vehicle body; and the term "inner side" refers to the side of the vehicle body adjacent to the passenger compartment in the horizontal direction, and vice versa. Unless otherwise stated, other directional terms, such as "vertical," "clockwise," and "counterclockwise," indicate the direction or positional relationship based on the direction and positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, not to indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the specific protection scope of this utility model. In the claims, description, and accompanying drawings of this utility model, unless otherwise expressly defined, the terms "fixed connection" or "fixed connection" should be interpreted broadly to refer to any connection method in which there is no displacement or relative rotation relationship between the two parties. This includes non-removable fixed connections, detachable fixed connections, integral connections, and fixed connections via other devices or elements. In the claims, description, and accompanying drawings of this utility model, the terms "comprising," "having," and variations thereof are intended to mean "including but not limited to."

[0040] Please refer to the following: Figures 1 to 7 The present invention will now describe the flip-up tailgate structure and the vehicle provided. The flip-up tailgate structure includes a lower tailgate assembly 1, a hinge assembly 3, a drive assembly, and a fixing assembly. The lower tailgate assembly 1 has a forward-protruding reinforcing part 1011 on its front side. The hinge assembly 3 is connected to the bottom of the reinforcing part 1011 and is used to rotatably connect with the vehicle body. The drive assembly includes a driver and a drive strut 4 connected to the driver. The drive strut 4 is a telescopic member. The driver is used to drive the drive strut 4 to extend and retract along its own axial direction. Both the fixed end and the telescopic end of the drive strut 4 are provided with mounting grooves 401, which are spherical grooves. The fixing assembly includes multiple fixing mechanisms 5, which are arranged one-to-one with the mounting grooves 401. Each fixing mechanism 5 has a fixing part 201 and a connecting part 5042 that is rotatably inserted into the mounting groove 401. The fixing part 201 is used to connect with the lower tailgate assembly 1 or the vehicle body, and the connecting part 5042 is adapted to the mounting groove 401.

[0041] Compared with the prior art, the flip-up tailgate structure provided by this utility model has a lower tailgate assembly 1 that is rotatably connected to the vehicle body via a hinge assembly 3. The reinforcing part 1011 of the lower tailgate assembly 1 can improve strength and increase resistance to deformation, avoiding the problem of deformation in this area after the hinge assembly 3 is fixed to the reinforcing part 1011. The two ends of the drive strut 4 are respectively connected to the vehicle body and the lower tailgate assembly 1 via fixing mechanisms 5. Since the drive strut 4 has a spherical mounting groove 401, the connecting part 5042 is rotatably inserted into the mounting groove 401, and has three degrees of rotational freedom. It can rotate flexibly with the opening or closing of the lower tailgate assembly 1, thereby ensuring smooth and non-blocking operation during the opening and closing of the lower tailgate assembly 1. The drive unit provides power to the drive strut 4, ensuring that the drive strut 4 extends or retracts to realize the opening and closing of the lower tailgate assembly 1. This utility model has a simple structure, which simplifies the drive structure. It not only ensures smooth operation during the opening and closing of the lower tailgate, but also prevents the rigid structure of the drive strut 4 from repeatedly deforming during movement, thus improving its service life.

[0042] Optionally, the driver is a motor.

[0043] It should be noted that the connecting part 5042 has rotational degrees of freedom in the X, Y and Z directions, allowing the connecting part 5042 to rotate freely within the mounting groove 401.

[0044] Specifically, the fixing mechanism 5 includes a baffle 402 provided at the opening of the mounting groove 401, which is used to limit the connecting part 5042 within the mounting groove 401.

[0045] In some embodiments, please refer to Figure 4 The fixing mechanism 5 includes a fixing frame 501, a connector 502, and a fixing member 503. The fixing frame 501 has a connecting hole and a fixing hole. One end of the connector 502 is inserted into the connecting hole, and the other end has a ball head 5021 adapted to the mounting groove 401. The ball head 5021 forms a connecting part 5042. The fixing member 503 includes a limiting piece 5031 and a fixing rod 5032 connected to the limiting piece 5031. The fixing rod 5032 is inserted into the fixing hole and forms a fixing part 201. The limiting piece 5031 abuts against the fixing frame 501.

[0046] The connector 502 is inserted into the connecting hole, and the fixing member 503 is inserted into the fixing hole. The fixing member 503 is used to install the connector 502 and the fixing member 503. The connector 502 is connected to the drive strut 4, and the fixing member 503 is connected to the vehicle body, thereby realizing the connection between the drive strut 4 and the vehicle body. In this embodiment, the fixing bracket 501 is used as an intermediate connecting component, which allows for more flexible connection positions between the drive strut 4 and the vehicle body. The limiting piece 5031 abuts against the fixing bracket 501 to prevent the fixing rod 5032 from separating from the fixing bracket 501.

[0047] Optionally, the connector 502 is screwed, snapped, or riveted to the fixing bracket 501.

[0048] In some embodiments, please refer to Figures 3 to 4 The fixing bracket 501 includes a first fixing piece 5011 and a second fixing piece 5012 that are distributed at an angle. The connecting hole is opened in the first fixing piece 5011 and the fixing hole is opened in the second fixing piece 5012.

[0049] The first fixing piece 5011 and the second fixing piece 5012 are distributed at an angle, which can improve the strength of the fixing frame 501 and reduce the probability of deformation of the fixing frame 501. The second fixing piece 5012 is attached to the vehicle body, increasing the contact area with the vehicle body or the lower tailgate assembly 1 and improving the connection firmness. In addition, compared with the straight plate structure, the solution in this embodiment can realize multi-angle installation, making the connection position of the drive strut 4 and the vehicle body (or lower tailgate assembly 1) more flexible.

[0050] In some embodiments, please refer to Figure 3 The mounting bracket 501 has a protruding reinforcing boss 5013, and a fixing hole is formed in the reinforcing boss 5013.

[0051] The reinforcing boss 5013 can increase the strength of the fixing bracket 501. The fixing hole is opened in the reinforcing boss 5013, which reduces the probability of deformation in the area around the fixing hole.

[0052] In some embodiments, please refer to Figure 5 The fixing mechanism 5 includes a connector 504 and a limiting gasket 505. One end of the connector 504 forms a fixing part 201 for connecting to the vehicle body or the lower tailgate assembly 1, and the other end forms a connecting part 5042. The outer peripheral surface of the connector 504 also has a radially protruding reinforcing part 5041. The limiting gasket 505 is sleeved on the outside of the connector 504 and abuts against the reinforcing part 5041 in the axial direction.

[0053] Connector 504 is connected to drive strut 4 and vehicle body respectively. Reinforcement part 5041 increases the local strength of connector 504 and can also limit the positioning of limiting pad 505. After connector 504 is connected to vehicle body or lower tailgate assembly 1, limiting pad 505 also abuts against vehicle body or lower tailgate assembly 1, increasing the contact area with vehicle body or lower tailgate assembly 1, reducing pressure, and reducing the probability of deformation or damage in this area due to stress concentration.

[0054] In some embodiments, please refer to Figures 1 to 2 The articulation assembly 3 includes an articulation seat 301 and an articulation arm 302. The articulation seat 301 is connected to the bottom of the reinforcing part and has a receiving groove. The articulation arm 302 is rotatably inserted into the receiving groove and is rotatably connected to the articulation seat 301 around a first axis. The first axis is parallel to the left and right direction. The articulation arm 302 is used to connect with the vehicle body.

[0055] The hinge arm 302 is inserted into the receiving groove, so that the hinge seat 301 limits the hinge arm 302 in a direction parallel to the first axis, thereby improving the firmness and stability of the connection between the hinge arm 302 and the hinge seat 301 and preventing the lower tail door assembly 1 from deviating from the predetermined trajectory during rotation.

[0056] In some embodiments, please refer to Figures 1 to 2 The lower tailgate assembly 1 includes a tailgate outer panel 103 and a tailgate inner panel 101 connected to the tailgate outer panel 103. A receiving cavity is formed between the tailgate outer panel 103 and the tailgate inner panel 101. The lower tailgate assembly also includes a tailgate reinforcing plate 102 disposed in the receiving cavity and connected to the tailgate inner panel 101. The tailgate reinforcing plate 102 has a mounting position. The tailgate inner panel 101 has a clearance hole 1012 corresponding to the mounting position. A mounting bracket 2 for fixing a lock is connected to the mounting position. The mounting bracket 2 extends through the clearance hole 1012 toward the front side of the tailgate inner panel 101.

[0057] Since the strength and rigidity of the tailgate reinforcement plate 102 are superior to those of the tailgate inner plate 101, no additional reinforcement is required, which is beneficial for achieving overall vehicle weight reduction. Furthermore, the tailgate reinforcement plate 102 is located within the cavity formed by the tailgate inner plate 101 and the tailgate outer plate 103, and the rear of the mounting bracket 2 is located within this cavity. This not only eliminates the need for excessively deep grooves on the tailgate reinforcement plate 102 to provide installation space for the mounting bracket 2, reducing manufacturing difficulty, but also minimizes the space occupied inside the trunk.

[0058] In some embodiments, please refer to Figures 1 to 2 The mounting bracket 2 includes a fixing part 201 connected to the mounting position and a mounting part 202 connected to the fixing part 201 at an angle. The mounting part 202 extends through the clearance hole 1012 toward the front side of the back door inner panel 101 and is used to fix the lock.

[0059] The mounting part 202 extends towards the front of the inner panel 101 of the tailgate after passing through the clearance hole 1012. The lock is fixed to the mounting part 202, and the lock can be installed after the tailgate assembly is completed, which is simple to install and facilitates subsequent maintenance of the lock. The fixing part 201 and the mounting part 202 are distributed at an angle and are connected to the tailgate reinforcing plate 102, which increases the contact connection with the tailgate reinforcing plate 102, improves the reliability of the connection, and reduces the pressure at the connection point.

[0060] In some embodiments, please refer to Figure 7 The back door reinforcement plate 102 has a central groove 1021 and fixing grooves 1022 symmetrically distributed on both sides of the central groove 1021 in the left-right direction. The central groove 1021 and the fixing grooves 1022 are spaced apart in the left-right direction, and both the central groove 1021 and the fixing grooves 1022 are recessed to the rear side. The mounting position is located in the fixing groove 1022.

[0061] The central groove 1021 and the fixing groove 1022 are recessed to the rear. The other areas of the back door reinforcing plate 102 are attached to and connected to the back door inner panel 101. The back door inner panel 101 covers the openings of the central groove 1021 and the fixing groove 1022, forming a closed chamber, which improves the overall strength and resistance to deformation. After the lock is connected to the mounting part 202 of the mounting bracket 2, it will generate a certain stress on the back door reinforcing plate 102, and will also generate vibration force when the lower back door assembly 1 is closed. In this embodiment, the structure does not need to set the reinforcing part 1011 in the area corresponding to the fixing part 201. It increases the strength by relying on its own structure, thereby improving the service life of the lower back door structure 1.

[0062] In some embodiments, please refer to Figure 7 The back door reinforcement plate 102 also has a reinforcing protrusion located in the fixing groove 1022. The reinforcing protrusion is located on the outer periphery of the mounting position and protrudes forward.

[0063] After the mounting bracket 2 is connected to the mounting position, the stress on the area near the mounting position on the tailgate reinforcement plate 102 increases. Setting a reinforcing protrusion on the outer periphery of the mounting position can improve the strength and deformation resistance of the area around the mounting position and reduce the probability of damage to the area near the mounting position when the tailgate assembly 1 is closed.

[0064] Based on the same inventive concept, this utility model also provides a vehicle, which includes the above-mentioned flip-up tailgate structure.

[0065] The vehicle provided by this utility model adopts the aforementioned flip-up tailgate structure. The lower tailgate assembly 1 is rotatably connected to the vehicle body via a hinge assembly 3. The reinforcing part 1011 of the lower tailgate assembly 1 can improve strength and increase resistance to deformation, avoiding the problem of deformation in this area after the hinge assembly 3 is fixed to the reinforcing part 1011. The two ends of the drive strut 4 are respectively connected to the vehicle body and the lower tailgate assembly 1 through fixing mechanisms 5. Since the drive strut 4 has a spherical mounting groove 401, the connecting part 5042 is rotatably inserted into the mounting groove 401, and has three degrees of rotational freedom. It can rotate flexibly with the opening or closing of the lower tailgate assembly 1, thereby ensuring smooth and non-blocking operation during the opening and closing of the lower tailgate assembly 1. The drive unit provides power to the drive strut 4, ensuring the extension or shortening of the drive strut 4 to realize the opening and closing of the lower tailgate assembly 1. This utility model has a simple structure, which simplifies the drive structure. It not only ensures smooth operation during the opening and closing of the lower tailgate, but also prevents repeated deformation of the rigid structure of the drive strut 4 during movement, thus improving its service life.

[0066] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A flip-up rear door structure, characterized in that, include: The lower tailgate assembly (1) has a forward-protruding reinforcing part (1011) on the front side; A hinge assembly (3) is connected to the bottom of the reinforcing part (1011), and the hinge assembly (3) is used to rotate with the vehicle body; The drive assembly includes a driver and a drive strut (4) connected to the driver. The drive strut (4) is a telescopic member. The driver is used to drive the drive strut (4) to extend and retract along its own axis. The fixed end and the telescopic end of the drive strut (4) are provided with mounting grooves (401). The mounting grooves (401) are spherical grooves. as well as The fixing component includes multiple fixing mechanisms (5), each fixing mechanism (5) being provided in a one-to-one correspondence with the mounting groove (401). Each fixing mechanism (5) has a fixing part (201) and a connecting part (5042) rotatably inserted into the mounting groove (401). The fixing part (201) is used to connect with the lower tailgate assembly (1) or the vehicle body, and the connecting part (5042) is adapted to the mounting groove (401).

2. The flip-up rear door structure as described in claim 1, characterized in that, The fixing mechanism (5) includes: The mounting bracket (501) has a connecting hole and a fixing hole; A connector (502) has one end inserted into the connecting hole and the other end having a ball head (5021) adapted to the mounting groove (401), the ball head (5021) forming the connecting portion (5042); and The fastener (503) includes a limiting piece (5031) and a fixing rod (5032) connected to the limiting piece (5031). The fixing rod (5032) is inserted into the fixing hole and forms the fixing part (201). The limiting piece (5031) abuts against the fixing frame (501).

3. The flip-up rear door structure as described in claim 2, characterized in that, The fixing frame (501) includes a first fixing piece (5011) and a second fixing piece (5012) distributed at an angle, the connecting hole is opened in the first fixing piece (5011) and the fixing hole is opened in the second fixing piece (5012).

4. The flip-up rear door structure as described in claim 2, characterized in that, The fixing bracket (501) has a protruding reinforcing boss (5013), and the fixing hole is formed in the reinforcing boss (5013).

5. The flip-up rear door structure as described in claim 1, characterized in that, The fixing mechanism (5) includes: A connector (504) has the fixing part (201) formed at one end for connection to the vehicle body or the lower tailgate assembly (1), and the connecting part (5042) formed at the other end. The outer peripheral surface of the connector (504) also has a radially protruding reinforcing part (5041); and The limiting gasket (505) is sleeved on the outside of the connector (504) and abuts against the reinforcing part (5041) along the axial direction.

6. The flip-up rear door structure as described in claim 1, characterized in that, The hinge assembly (3) includes: A hinge seat (301) is connected to the bottom of the reinforcing part (1011), and the hinge seat (301) has a receiving groove; and The articulated arm (302) is rotatably inserted into the receiving groove and rotatably connected to the articulated seat (301) about a first axis parallel to the left and right direction. The articulated arm (302) is used to connect to the vehicle body.

7. The flip-up rear door structure as described in claim 1, characterized in that, The lower tailgate assembly (1) includes a tailgate outer panel (103) and a tailgate inner panel (101) connected to the tailgate outer panel (103). A receiving cavity is formed between the tailgate outer panel (103) and the tailgate inner panel (101). The lower tailgate assembly also includes a tailgate reinforcing plate (102) disposed in the receiving cavity and connected to the tailgate inner panel (101). The tailgate reinforcing plate (102) has a mounting position. The tailgate inner panel (101) has a clearance hole (1012) corresponding to the mounting position. The mounting position is connected to a mounting bracket (2) for fixing a lock. The mounting bracket (2) extends through the clearance hole (1012) toward the front side of the tailgate inner panel (101).

8. The flip-up rear door structure as described in claim 7, characterized in that, The mounting bracket (2) includes a fixing part (201) connected to the mounting position and a mounting part (202) connected to the fixing part (201) at an angle. The mounting part (202) extends through the clearance hole (1012) to the front side of the back door inner panel (101). The mounting part (202) is used to fix the lock.

9. The flip-up rear door structure as described in claim 7, characterized in that, The back door reinforcing plate (102) has a central groove (1021) and fixing grooves (1022) symmetrically distributed on both sides of the central groove (1021) in the left-right direction. The central groove (1021) and the fixing grooves (1022) are spaced apart in the left-right direction, and both the central groove (1021) and the fixing grooves (1022) are recessed to the rear. The mounting position is located in the fixing groove (1022).

10. A vehicle, characterized in that, It has a flip-up rear door structure as described in any one of claims 1-9.

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