Back door threshold structure and vehicle

By designing the sill trim support plate and the sill baffle in the back door sill structure, combined with the design of the flip cover plate and lock hook, the exposed problem of the flipped sill structure when the sill cover plate is flipped, and the lock hook is realized The effective shading and support improves the aesthetics and service life of the car.

CN222224263UActive Publication Date: 2024-12-24GREAT WALL MOTOR CO LTD
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Patent Information

Application Number
CN202420112502.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-01-17
Publication Date
2024-12-24
Estimated Expiration
2034-01-17

AI Technical Summary

Technical Problem

Among the existing models, the flipped back door sill structure is likely to cause the internal structure to be exposed when the sill cover is flipped, causing dust and rain and snow to enter, affecting service life and reducing the vehicle's sense of sophistication and passenger satisfaction.

Method used

A back door sill structure is designed, including a door sill trim support plate and a door sill baffle. The lock hook penetrates the door sill baffle and is connected to the rear panel metal of the vehicle body. The flip cover plate is connected by rotation and is equipped with a avoiding groove, and elastic parts are used. Structures such as limiting bosses realize effective shading and support of the lock hooks and enhance the overall bearing capacity.

Benefits of technology

It effectively avoids the exposure of internal components, improves the aesthetics of the threshold structure and overall support capabilities, and improves the exquisiteness and user satisfaction of the model.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a back door doorsill structure and a vehicle, including a doorsill trim panel support plate and a doorsill baffle, the doorsill trim panel support plate is used for supporting below a doorsill trim panel, the doorsill baffle is located between the doorsill trim panel support plate and a vehicle body rear wall metal plate, the doorsill baffle and the rear wall metal plate enclose to form a cavity, and the doorsill trim panel support plate is used for supporting below the doorsill trim panel support plate. The latch hook penetrates through the doorsill baffle to be connected with the automobile body rear wall metal plate, the top of the doorsill trim panel supporting plate is rotationally connected with an overturning cover plate used for shielding the latch hook, and an avoiding groove used for avoiding the latch hook is formed in the overturning cover plate. According to the doorsill structure of the back door, the doorsill baffle can be supported between the doorsill trim panel supporting plate and the automobile body rear wall metal plate, sufficient space is provided for installation of the lock hook, meanwhile, the supporting effect on the doorsill trim panel is enhanced, the overall bearing capacity of the doorsill structure is improved, and the doorsill structure is convenient to use. The overturning cover plate on the doorsill decoration plate supporting plate can effectively shield the lock hook, internal components are prevented from being exposed, and the attractiveness of the doorsill structure is improved.
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Description

Technical Field

[0001] The utility model belongs to the technical field of a back door threshold, and more specifically relates to a back door threshold structure and a vehicle. Background Art

[0002] At present, people have higher and higher requirements for vehicle driving performance, and also higher and higher requirements for the exquisiteness, luxury and technological sense of the vehicle appearance. In existing models, a flip-type tailgate structure is often used. When the flip cover of the tailgate threshold is pressed, the internal structure of the tailgate threshold trim (such as sound-absorbing cotton and sheet metal) will be exposed, which is easy to cause dust and rain and snow to enter, affecting the service life of the components, while also reducing the exquisiteness of the vehicle and affecting the satisfaction of passengers. Utility Model Content

[0003] The utility model aims to provide a tailgate sill structure and a vehicle, which can effectively enhance the overall strength of the sill structure, achieve effective shielding of the lock hook, and improve the aesthetics of the tailgate lock hook position.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide a tailgate threshold structure, including a threshold trim support plate and a threshold baffle, the threshold trim support plate is used to support the bottom of the threshold trim, the threshold baffle is located between the threshold trim support plate and the rear panel of the vehicle body, the threshold baffle and the rear panel of the vehicle body enclose a cavity for accommodating a lock hook, the lock hook passes through the threshold baffle and is connected to the rear panel of the vehicle body, the top of the threshold trim support plate is rotatably connected to a flip cover for shielding the lock hook, and the flip cover is provided with an avoidance groove for avoiding the lock hook.

[0005] In a possible implementation, a limiting boss protrudes from the rear side wall of the sill trim support plate to limit the position below the sill baffle, and at least two limiting bosses are spaced apart along the left-right direction of the vehicle body.

[0006] In one possible implementation, an upper opening corresponding to the upper and lower lock hooks is provided on the top wall of the threshold trim support plate, and the flip cover is rotatably connected to the threshold baffle plate through a rotating shaft, and the avoidance groove extends forward perpendicular to the axial direction of the rotating shaft to the front side edge of the flip cover.

[0007] In some embodiments, an elastic member is sleeved on the rotating shaft, one end of the elastic member presses against the inner top wall of the threshold trim support plate, and the other end presses against the bottom wall of the flip cover plate. The elastic member can drive the flip cover plate to press against the inner top wall of the threshold trim support plate to seal the upper opening.

[0008] In one possible implementation, the rear side edge of the threshold baffle is bent upward to form an inclined portion, and the two side edges of the threshold baffle are bent upward to form side baffles, the rear side edges of the side baffles are connected to the side edges of the inclined portion, and the front side edge of the threshold baffle and the front side edge of the side baffle are both in contact with and cooperate with the rear side wall of the threshold trim support plate.

[0009] In some embodiments, a mounting hole is provided through the inclined portion, and the mounting hole is used to avoid the locking hook so that the locking hook can be connected to the rear panel of the vehicle body.

[0010] In a possible implementation, a matching block is provided on the inner top wall of the threshold trim support plate, and a matching cover is provided on the side of the threshold baffle plate and is arranged outside and below the matching block, and the matching cover is connected to the matching block.

[0011] In some embodiments, a positioning hole extending vertically through the mating cover is provided, and a connecting sleeve extending downward into the positioning hole is provided on the inner top wall of the mating block and the sill trim support plate, respectively, and the connecting sleeve is welded to the mating cover.

[0012] In some embodiments, a plurality of reinforcing ribs are provided on the outer periphery of the connecting sleeve, and the upper edges of the reinforcing ribs are connected to the inner top wall of the sill trim support plate.

[0013] Compared with the prior art, the solution shown in the embodiment of the present application provides a tailgate sill structure in which the sill baffle can be supported between the sill trim support plate and the rear panel of the vehicle body, thereby providing sufficient space for the installation of the lock hook, while also enhancing the supporting effect on the sill trim and improving the overall bearing capacity of the sill structure. The flip cover on the sill trim support plate can effectively shield the lock hook, thereby avoiding exposure of internal components and improving the aesthetics of the sill structure.

[0014] The utility model also provides a vehicle, the vehicle includes a rear door threshold structure. The threshold structure of the vehicle is supported between the threshold trim support plate and the rear panel of the vehicle body by means of a threshold baffle, providing sufficient space for the installation of a lock hook, while also enhancing the support function of the threshold trim, improving the overall support capacity of the threshold structure, and the flip cover on the threshold trim support plate can effectively shield the lock hook, avoiding exposure of internal components, and improving the aesthetics of the threshold structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0016] Figure 1A schematic diagram of a top view of a rear door threshold structure provided by an embodiment of the utility model (including a lock hook and a threshold trim plate);

[0017] Figure 2 For the utility model embodiment Figure 1 Schematic diagram of the cross-sectional structure of AA;

[0018] Figure 3 An exploded structural diagram of a rear door threshold structure provided by an embodiment of the utility model (including a lock hook and a threshold trim);

[0019] Figure 4 For the utility model embodiment Figure 3 An enlarged structural diagram of the middle threshold baffle;

[0020] Figure 5 For the utility model embodiment Figure 1 Schematic diagram of the structure from another angle;

[0021] Figure 6 For the utility model embodiment Figure 5 A schematic diagram of the structure of the middle door sill trim support plate at another angle;

[0022] Figure 7 For the utility model embodiment Figure 6 The partially enlarged structural diagram of middle Ⅰ;

[0023] Figure 8 For the utility model embodiment Figure 5 An enlarged structural diagram of the center sill baffle, flip cover and rear body sheet metal from another angle.

[0024] Among them, the reference numerals in the figure are:

[0025] 1. Door sill trim support plate; 11. Limiting boss; 12. Upper opening; 13. Matching block; 14. Connecting sleeve; 15. Reinforcing rib plate; 16. Cavity; 2. Door sill baffle; 21. Inclined portion; 22. Side baffle; 23. Matching cover; 24. Positioning hole; 25. Mounting hole; 3. Flip cover; 31. Avoidance groove; 32. Rotating shaft; 33. Elastic part; 4. Door sill trim; 5. Body rear panel sheet metal; 6. Lock hook. DETAILED DESCRIPTION

[0026] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0027] In the claims, specification and the above-mentioned drawings of the present utility model, the terms "front" and "rear" are the same as the front-to-back direction of the vehicle body, "left" and "right" are the same as the left-to-right direction of the vehicle body, and "up" and "down" are the same as the up-down direction of the vehicle body; the term "inside" refers to the direction toward the central axis of the vehicle body, and the term "outside" refers to the direction away from the central axis of the vehicle body, wherein the central axis of the vehicle body is parallel to the front-to-back direction of the vehicle body. The remaining directional words, unless otherwise clearly defined, such as the use of the terms "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "clockwise", "counterclockwise", "high", "low" and the like to indicate the direction or position relationship are based on the direction and position relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, so they cannot be understood as limiting the specific protection scope of the present utility model.

[0028] Please also read Figures 1 to 8 The tailgate sill structure and the vehicle provided by the utility model are now described. The tailgate sill structure includes a sill trim support plate 1 and a sill baffle plate 2. The sill trim support plate 1 is used to support the lower side of the sill trim 4. The sill baffle plate 2 is located between the sill trim support plate 1 and the rear body panel 5. The sill baffle plate 2 and the rear body panel 5 form a cavity 16 for accommodating a lock hook 6. The lock hook 6 penetrates the sill baffle plate 2 and is connected to the rear body panel 5. The top of the sill trim support plate 1 is rotatably connected with a flip cover plate 3 for shielding the lock hook 6. The flip cover plate 3 is provided with an avoidance groove 31 for avoiding the lock hook 6.

[0029] Compared with the prior art, the tailgate sill structure provided in the present embodiment has a sill baffle 2 that can be supported between the sill trim support plate 1 and the rear panel 5 of the vehicle body, thereby providing sufficient space for the installation of the lock hook 6, while also enhancing the supporting effect on the sill trim 4 and improving the overall bearing capacity of the sill structure. The flip cover plate 3 on the sill trim support plate 1 can effectively shield the lock hook 6, thereby avoiding exposure of internal components and improving the aesthetics of the sill structure.

[0030] In this embodiment, the sill baffle plate 2 is used to form a cavity 16 located inside the sill trim support plate 1, the lock hook 6 is arranged in the cavity 16 and is connected to the rear body sheet metal 5, and the flip cover plate 3 can not only block the above-mentioned cavity 16 when the tailgate is opened to avoid exposure of internal components, but also flip downward to the lower end of the lock hook 6 when the lock hook 6 is locked with the tailgate lock, thereby effectively avoiding the tailgate lock and realizing the normal use of the lock hook 6.

[0031] Specifically, the front side edge of the threshold baffle 2 contacts and cooperates with the rear side wall of the threshold trim support plate 1, and the rear side wall of the threshold trim support plate 1 can enclose a closed cavity 16 with the threshold baffle 2, which can effectively accommodate the lock hook 6 while cooperating with the flip cover 3 to achieve a good shielding effect, avoiding exposure of internal ribs and sound-absorbing cotton and other structures, thereby enhancing the refinement of the entire vehicle and increasing users' favorability towards the vehicle model.

[0032] In some possible implementations, the characteristic threshold trim support plate 1 is as follows: Figure 2 and Figure 6 See the structure shown. Figure 2 and Figure 6 A limiting boss 11 is provided on the rear side wall of the threshold trim support plate 1 to limit the position below the threshold baffle 2, and at least two limiting bosses 11 are provided at intervals along the left-right direction of the vehicle body.

[0033] In this embodiment, the limiting boss 11 on the threshold trim support plate 1 can be supported under the threshold trim plate 4, effectively limiting the upper and lower positions of the threshold baffle 2 to prevent the threshold baffle 2 from sliding down. The limiting boss 11 protrudes toward the rear side of the vehicle body, has a longitudinal cross-section that is approximately triangular, and has a supporting surface that can be supported under the threshold baffle 2.

[0034] On this basis, a plurality of limiting bosses 11 are arranged at intervals in the left and right directions of the vehicle body, which can effectively support different positions of the bottom wall of the threshold baffle 2 to ensure the stability of its installation position. The above structure facilitates lightweight design and has a good limiting function.

[0035] In some possible implementations, the characteristic threshold trim support plate 1 is as follows: Figure 1 , Figure 5 and Figure 6 See the structure shown. Figure 1 , Figure 5 and Figure 6 An upper opening 12 corresponding to the upper and lower locking hooks 6 is formed on the top wall of the threshold trim support plate 1. The flip cover plate 3 is rotatably connected to the threshold baffle plate 2 through a rotating shaft 32. The avoidance groove 31 extends forward perpendicular to the axial direction of the rotating shaft 32 to the front side edge of the flip cover plate 3.

[0036] In this embodiment, the upper opening 12 provided on the threshold trim support plate 1 allows the back door lock to extend into the cavity 16 to achieve relative locking with the lock hook 6. Correspondingly, the threshold trim 4 above the threshold trim support plate 1 is provided with a through hole corresponding to the upper opening 12.

[0037] On this basis, the avoidance groove 31 set on the flip cover 3 is used to avoid the lock hook 6. When the back door lock is locked with the lock hook 6, the flip cover 3 gradually flips toward the bottom of the lock hook 6, which can effectively avoid the lock hook 6 and avoid position interference between the two.

[0038] Specifically, the extension direction of the avoidance groove 31 is perpendicular to the axial direction of the rotating shaft 32 and extends to the front edge of the flip cover 3, which is compatible with the swinging direction of the flip cover 3, ensuring that the flip cover 3 can effectively avoid the lock hook 6 during the swinging process.

[0039] In some embodiments, the characteristic rotating shaft 32 may be Figure 8 See the structure shown. Figure 8 An elastic member 33 is sleeved on the rotating shaft 32, one end of the elastic member 33 presses against the inner top wall of the threshold trim support plate 1, and the other end presses against the bottom wall of the flip cover 3. The elastic member 33 can drive the flip cover 3 to press against the inner top wall of the threshold trim support plate 1 to block the upper opening 12.

[0040] In this embodiment, when the back door lock and the lock hook 6 are in the unlocked state, the flip cover 3 can be flipped upward to a position blocking the upper opening 12 under the action of the elastic member 33, thereby effectively shielding the internal lock hook 6 and other components. When the back door lock and the lock hook 6 are in the locked state, the back door lock can push the flip cover 3 downward to a position close to the lower end of the lock hook 6, thereby effectively avoiding the back door lock and ensuring the effective locking of the back door lock and the lock hook 6.

[0041] In some possible implementations, the characteristic threshold baffle 2 is as follows: Figure 2 and Figure 4 See the structure shown. Figure 2 and Figure 4 The rear side edge of the threshold baffle 2 is bent upward to form an inclined portion 21, and the two side edges of the threshold baffle 2 are bent upward to form a side baffle 22. The rear side edge of the side baffle 2 is connected to the side edge of the inclined portion 21, and the front side edge of the threshold baffle 2 and the front side edge of the side baffle 22 are both in contact with the rear side wall of the threshold trim support plate 1.

[0042] In this embodiment, the inclined portion 21 arranged on the rear side edge of the threshold baffle 2 can fit on the front side wall of the rear panel 5 of the vehicle body. Combined with the setting of the side baffles 22 on both sides, the threshold baffle 2 can be reliably supported between the threshold trim support plate 1 and the rear panel 5 of the vehicle body, thereby enhancing the overall supporting performance of the threshold structure.

[0043] The arrangement of the inclined portion 21 and the side stop 22 enhances the overall structural strength of the threshold trim 4, and can enclose a closed cavity 16 with the threshold trim support plate 1, thereby effectively accommodating the lock hook 6. The front side edge of the side stop 22 and the front side edge of the threshold stop 2 are closely fitted with the rear side wall of the threshold trim support plate 1, providing greater strength support for the threshold trim support plate 1. When the threshold trim 4 is subjected to pressure from a heavy object, the structural deformation caused by the downward pressure on the threshold trim 4 can be effectively prevented.

[0044] Furthermore, the upper edge of the inclined portion 21 is provided with a slot for one end of the elastic member 33 to extend into, and the end of the elastic member 33 can press against the inner top wall of the sill trim support plate 1, and the other end of the elastic member 33 can press against the bottom wall of the flip cover 3, so that the flip cover 3 has a tendency to swing upward, thereby forming an effect of blocking below the upper opening 12. The area of ​​the flip cover 3 is larger than the area of ​​the upper opening 12, and the flip cover 3 is pressed against the bottom wall of the sill trim support plate 1 at a position close to the outer peripheral edge, thereby ensuring the reliability of the blocking.

[0045] In some embodiments, the characteristic inclined portion 21 may be formed as follows: Figure 4 See the structure shown. Figure 4 The inclined portion 21 is provided with a mounting hole 25 which is used to avoid the lock hook 6 so that the lock hook 6 is connected to the rear panel 5 of the vehicle body.

[0046] In this embodiment, when the lock hook 6 is connected to the rear body sheet metal 5, it needs to pass through the inclined portion 21 for installation. In order to achieve structural avoidance and ensure the reliable connection between the lock hook 6 and the rear body sheet metal 5, a mounting hole 25 is provided on the inclined portion 21. When the lock hook 6 is connected to the rear body sheet metal 5, the mounting hole 25 can provide sufficient installation space to ensure the reliability of the connection between the lock hook 6 and the rear body sheet metal 5.

[0047] For some possible implementations, see Figures 6 to 8 A matching block 13 is provided on the inner top wall of the threshold trim support plate 1 , and a matching cover 23 is provided on the side of the threshold baffle 2 and is arranged outside and below the matching block 13 , and the matching cover 23 is connected to the matching block 13 .

[0048] In this embodiment, the threshold trim support plate 1 is not only limited by the limiting boss 11, but also provided with matching covers 23 on both sides thereof to achieve positioning connection with the threshold trim support plate 1. The matching block 13 on the top wall of the threshold trim support plate 1 can be positioned and matched with the matching cover 23 on the side of the threshold baffle 2, so that the horizontal positions of the two can be effectively locked.

[0049] Specifically, the threshold trim support plate 1 and the threshold baffle plate 2 can be connected by welding or by a connecting piece, so as to ensure the reliability of the connection between the two and achieve effective fixation of the threshold baffle plate 2.

[0050] In some embodiments, the above-mentioned feature matching cover 23 and matching block 13 can be used as follows: Figures 6 to 8 See the structure shown. Figures 6 to 8 The matching cover 23 is provided with a positioning hole 24 which passes through from top to bottom, and the matching block 13 and the inner top wall of the threshold trim support plate 1 are respectively provided with a connecting sleeve 14 which extends downward into the positioning hole 24, and the connecting sleeve 14 is welded to the matching cover 23.

[0051] In this embodiment, the connecting sleeve 14 on the matching block 13 and the positioning hole 24 on the matching cover 23 are used for positioning and matching. The main axis of the connecting sleeve 14 extends downward, passes through the positioning hole 24 and extends to the bottom of the matching cover 23, thereby ensuring the dimensional accuracy during the positioning process. The surrounding wall of the connecting sleeve 14 is welded to the top wall of the matching cover 23, thereby ensuring the reliability of the connection.

[0052] In some embodiments, the above-mentioned characteristic connecting sleeve 14 can be used as follows Figure 7 See the structure shown. Figure 7 A plurality of reinforcing ribs 15 are provided on the outer periphery of the connecting sleeve 14 , and the upper edges of the reinforcing ribs 15 are connected to the inner top wall of the threshold trim support plate 1 .

[0053] In this embodiment, the reinforcing rib plate 15 arranged on the periphery of the connecting sleeve 14 can enhance the connection strength between the connecting sleeve 14 and the matching block 13 or the inner top wall of the threshold trim support plate 1, ensure the reliability of the connection of the connecting sleeve 14, enhance the reliability of the connection between the threshold trim support plate 1 and the threshold baffle plate 2, enhance the structural strength of the entire threshold structure, provide sufficient space for the installation of the lock hook 6, and effectively shield the internal components of the cavity 16 with the help of the flip cover plate 3, thereby improving the refinement and aesthetics of the threshold structure.

[0054] Based on the same inventive concept, the embodiment of the present application also provides a vehicle, which includes a rear door threshold structure. The threshold structure of the vehicle is supported between the threshold trim support plate 1 and the rear body panel 5 by means of the threshold baffle plate 2, providing sufficient space for the installation of the lock hook 6, while also enhancing the support function of the threshold trim 4, improving the overall bearing capacity of the threshold structure, and the flip cover plate 3 on the threshold trim support plate 1 can effectively cover the lock hook 6, avoiding the exposure of internal components, and improving the aesthetics of the threshold structure.

[0055] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. The back door threshold structure is characterized by: The invention comprises a threshold trim support plate (1) and a threshold baffle plate (2), wherein the threshold trim support plate (1) is used to support the lower side of the threshold trim plate (4), the threshold baffle plate (2) is located between the threshold trim support plate (1) and the rear panel metal of the vehicle body (5), the threshold baffle plate (2) and the rear panel metal of the vehicle body (5) form a cavity (16) for accommodating a lock hook (6), the lock hook (6) passes through the threshold baffle plate (2) and is connected to the rear panel metal of the vehicle body (5), the top of the threshold trim support plate (1) is rotatably connected to a flip cover plate (3) for shielding the lock hook (6), and the flip cover plate (3) is provided with an avoidance groove (31) for avoiding the lock hook (6).

2. The tailgate sill structure according to claim 1, characterized in that: A limiting boss (11) is provided on the rear side wall of the threshold trim support plate (1) so as to be positioned below the threshold baffle plate (2), and at least two limiting bosses (11) are provided at intervals along the left-right direction of the vehicle body.

3. The back door sill structure according to claim 1, characterized in that: An upper opening (12) corresponding to the upper and lower parts of the lock hook (6) is formed through the top wall of the threshold trim support plate (1); the flip cover plate (3) is rotatably connected to the threshold baffle plate (2) via a rotating shaft (32); and the avoidance groove (31) extends forward perpendicularly to the axial direction of the rotating shaft (32) to the front side edge of the flip cover plate (3).

4. The tailgate sill structure according to claim 3, characterized in that: An elastic member (33) is sleeved on the rotating shaft (32), one end of the elastic member (33) is pressed against the inner top wall of the threshold trim support plate (1), and the other end is pressed against the bottom wall of the flip cover plate (3), and the elastic member (33) can drive the flip cover plate (3) to press against the inner top wall of the threshold trim support plate (1) to block the upper opening (12).

5. The tailgate sill structure according to claim 1, characterized in that: The rear side edge of the threshold baffle (2) is bent upward to form an inclined portion (21), and the two side edges of the threshold baffle (2) are bent upward to form side baffles (22), the rear side edges of the side baffles (22) are connected to the side edges of the inclined portion (21), and the front side edges of the threshold baffle (2) and the front side edges of the side baffles (22) are both in contact with the rear side wall of the threshold trim support plate (1).

6. The tailgate sill structure according to claim 5, characterized in that: The inclined portion (21) is provided with a mounting hole (25) extending therethrough, and the mounting hole (25) is used to avoid the locking hook (6) so that the locking hook (6) is connected to the rear panel metal (5) of the vehicle body.

7. The rear door sill structure according to any one of claims 1 to 6, characterized in that: A matching block (13) is provided on the inner top wall of the threshold trim support plate (1), and a matching cover (23) is provided on the side of the threshold baffle (2) and is arranged outside and below the matching block (13), and the matching cover (23) is connected to the matching block (13).

8. The tailgate sill structure according to claim 7, characterized in that: The matching cover (23) is provided with a positioning hole (24) which passes through from top to bottom, and the matching block (13) and the inner top wall of the sill trim support plate (1) are respectively provided with a connecting sleeve (14) which extends downward into the positioning hole (24), and the connecting sleeve (14) is welded to the matching cover (23).

9. The tailgate sill structure according to claim 8, characterized in that: A plurality of reinforcing ribs (15) are provided on the outer periphery of the connecting sleeve (14), and the upper edges of the reinforcing ribs (15) are connected to the inner top wall of the threshold trim support plate (1).

10. A vehicle, characterized in that: The vehicle comprises the tailgate sill structure according to any one of claims 1 to 9.