A double-opening tailgate structure suitable for a vehicle

Abstract

This utility model discloses a double-opening tailgate structure suitable for vehicles, comprising: a frame assembly, a tailgate assembly, and a hinge structure; wherein, the frame assembly includes an upper crossbeam, a lower crossbeam, and two columns arranged on the left and right sides; the two columns are respectively welded to the left and right sides of the upper and lower crossbeams and are arranged opposite each other to form a rectangular cavity for accommodating and installing the tailgate assembly; the tailgate assembly includes two tailgates arranged side by side inside the rectangular cavity; each tailgate has a through gap corresponding to the column on its sidewall, and each through gap is provided with at least one hinge structure, and the tailgate is rotatably connected to the column through the hinge structure; the technical solution of this utility model solves the problems of traditional hinge structures in automobile tailgates being exposed and easily corroded, and bolts being easily loosened.

Description

Technical Field

[0001] This utility model relates to the field of automobile manufacturing technology, specifically to a double-opening tailgate structure suitable for vehicles. Background Technology

[0002] The existing double-opening tailgate structure has been widely used in vehicles with such requirements, such as small trucks and medical vehicles. Compared with the side door structure, this double-opening tailgate structure can ensure that the safety passage and unloading passage are spacious enough, which makes it easier for users to work quickly in outdoor scenarios.

[0003] For example, a vehicle and its electronically controlled lock double-door mechanism, authorized by publication number CN216617214U, uses a traditional hinge structure adapted for installation on a double-opening tailgate. Although this hinge structure has been tested in the market for a long time and its functional performance meets the needs of use, it has obvious shortcomings: First, the two hinge blades are exposed on the outside of the tailgate. Under long-term use, the blades are easily corroded and rusted by rainwater, which seriously affects the overall appearance of the vehicle. Second, the two blades are set on the same plane and installed externally. External factors such as flying stones, human-caused damage, or vibration can directly affect the blades, causing the bolts fixing the hinges to loosen, which in turn causes the blades to warp and deform. In particular, the loosened blades may fall off while the vehicle is in motion, causing an accident and posing a serious safety hazard.

[0004] Given the shortcomings of the existing technology, the current double-opening tailgate structure needs further optimization and improvement. Utility Model Content

[0005] This utility model provides a double-opening tailgate structure suitable for vehicles, which overcomes the shortcomings of the prior art and adopts the following technical solution:

[0006] A dual-opening tailgate structure suitable for vehicles includes: a frame assembly, a tailgate assembly, and a hinge structure; wherein, the frame assembly includes an upper crossbeam, a lower crossbeam, and two columns arranged on the left and right sides; the two columns are respectively welded to the left and right sides of the upper and lower crossbeams and are arranged opposite each other to form a rectangular cavity for accommodating and installing the tailgate assembly; the tailgate assembly includes two tailgates arranged side by side within the rectangular cavity; each tailgate has a through gap corresponding to the column on its sidewall, and at least one hinge structure is provided in each through gap, the tailgate being rotatably connected to the column through the hinge structure; the hinge structure includes a pivot assembly and a rotating arm and a fixed arm fixed on both sides of the pivot assembly; the pivot assembly is exposed outside the through gap and suspended; the rotating arm is screwed to the inner wall of the tailgate through the through gap, and the fixed arm is screwed to the sidewall of the column through the through gap; when the tailgate is closed, the rotating arm and the fixed arm are arranged at an angle.

[0007] Preferably, the pivot assembly includes a rotating shaft and two bushings respectively movably fitted onto the two sides of the rotating shaft. The rotating arm is located between the two bushings and is welded and fixed to the rotating shaft. The two bushings are respectively welded and fixed to the fixed arm, so that the rotating arm can rotate on the bushings via the rotating shaft.

[0008] Preferably, the rotating shaft is arranged in a stepped shape; the rotating shaft includes a main shaft and two auxiliary shafts of the same diameter integrally formed on the left and right sides of the main shaft, wherein the diameter of the main shaft is larger than the diameter of the auxiliary shafts.

[0009] Preferably, the side protrusion of the fixed arm forms two connecting parts that are respectively welded and fixed to the bushing, and the groove between the two connecting parts corresponds to the secondary shaft of the rotating shaft.

[0010] Preferably, the width of the slot is greater than or equal to the length of the secondary shaft.

[0011] Preferably, the pivot assembly further includes a friction sleeve located between the rotating shaft and the bushing, wherein the inner diameter of the friction sleeve is sleeved and connected to the rotating shaft, and the outer diameter of the friction sleeve is sleeved and connected to the bushing.

[0012] Preferably, the through gap is provided with two hinge structures arranged vertically, and the tailgate is rotatably connected to the column through the two hinge structures.

[0013] Preferably, a sealing strip is provided between the upper crossbeam and the lower crossbeam of the tailgate.

[0014] Preferably, the rotating arm is configured as a C-shaped rotating arm, and the length of the C-shaped rotating arm is greater than the length of the fixed arm.

[0015] Preferably, the included angle between the rotating arm and the fixed arm is 30°-80°.

[0016] As can be seen from the above description of this utility model, compared with the prior art, this utility model has the following beneficial effects:

[0017] This invention provides a double-opening tailgate structure suitable for vehicles, solving the problems of traditional hinge structures in automobile tailgates being exposed and prone to corrosion, and bolts being easily loosened. In this invention, the rotating arm and fixed arm of the hinge structure are fixedly installed to the inner wall of the tailgate and the side wall of the pillar respectively through a through gap. This allows most of the volume to be hidden between the inner wall of the tailgate and the pillar, with only the pivot assembly completely exposed and suspended. This reduces the probability of external forces such as flying stones and human-caused damage directly acting on the hinge connection parts (such as bolts), effectively reducing the impact of rainwater erosion and significantly improving the structure's corrosion resistance and aesthetic appearance. Secondly, when the tailgate is closed, the rotating arm and the fixed arm are set at an angle. This structural design allows the hinge to form a stable mechanical support structure when closed. Compared with the traditional hinge's two-piece exposed structure, the angled design can distribute external impact force to the pillar and tailgate through the rotating arm and the fixed arm, reducing the load on single-point forces (such as at the bolt connection of traditional pieces), thereby reducing the risk of bolts loosening due to vibration or external impact, effectively resisting external impact on the tailgate, reducing tailgate swaying and displacement, and enhancing the stability of the tailgate when closed. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 The overall structure of this utility model embodiment Figure 1 ;

[0020] Figure 2 The overall structure of this utility model embodiment Figure 2 ;

[0021] Figure 3 for Figure 2 A magnified view of part A shown below.

[0022] Figure 4 This is a schematic diagram of the overall structure of the hinge structure according to an embodiment of the present utility model;

[0023] Figure 5 This is an exploded view of the hinge structure of an embodiment of this utility model;

[0024] Figure 6 This is a cross-sectional schematic diagram of the hinge structure according to an embodiment of the present utility model.

[0025] The annotations in the attached figures are explained as follows:

[0026] 1. Frame assembly; 11. Upper crossbeam; 12. Lower crossbeam; 13. Column; 2. Tailgate assembly; 21. Tailgate; 2A. Through gap; 3. Hinge structure; 31. Pivot assembly; 311. Rotating shaft; 311a. Main shaft; 311b. Sub-shaft; 312. Bushing; 313. Friction sleeve; 32. Rotating arm; 33. Fixed arm; 331. Connecting part; 33A. Hollow slot. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are preferred embodiments of the present utility model and should not be considered as excluding other embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0028] Unless otherwise expressly defined, the use of terms such as "first," "second," or "third" in the claims, description, and drawings of this utility model is for distinguishing different objects and not for describing a specific order.

[0029] Unless otherwise expressly defined, in the claims, description, and accompanying drawings of this utility model, the use of directional terms such as "center," "lateral," "longitudinal," "horizontal," "vertical," "top," "bottom," "inner," "outer," "upper," "lower," "front," "rear," "left," "right," "clockwise," and "counterclockwise" to indicate orientation or positional relationships is based on the orientation and positional relationships shown in the accompanying drawings and is only for the convenience of describing this utility model and simplifying the description. It does 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, and therefore should not be construed as limiting the specific protection scope of this utility model.

[0030] Unless otherwise expressly defined, the terms "fixed connection" or "fixed connection" used in the claims, description and drawings of this utility model shall be interpreted broadly to refer to any connection in which there is no displacement or relative rotation relationship between the two parties, including non-removable fixed connection, detachable fixed connection, integral connection and fixed connection through other devices or components.

[0031] In the claims, description and accompanying drawings of this utility model, the terms "comprising", "having", and variations thereof are used to mean "including but not limited to".

[0032] Please see Figures 1 to 6 .

[0033] This embodiment provides a double-opening tailgate 21 structure suitable for vehicles. This double-opening tailgate 21 structure is suitable for vehicles such as small trucks and ambulances. Its specific structure is as follows: Figure 1-6 As shown. The frame assembly 11 forms a rectangular cavity through welding, and the two tailgates 21 of the tailgate assembly 2 achieve a double-opening and closing mechanism through the hinge structure 3, solving the problems of exposed hinges being prone to corrosion and bolts being prone to loosening in traditional systems. The double-opening tailgate 21 structure mainly includes the frame assembly 1, the tailgate assembly 2, and the hinge structure 3; among which,

[0034] Frame assembly 1, see Figure 1 and Figure 2 It includes a steel upper crossbeam 11, a lower crossbeam 12 and two columns 13 arranged on the left and right sides; the two columns 13 are respectively welded to the left and right sides of the upper crossbeam 11 and the lower crossbeam 12 and are arranged in parallel opposite directions to form a rectangular cavity for accommodating the tailgate assembly 2.

[0035] The tailgate assembly 2 includes two tailgates 21 arranged side by side within the rectangular cavity. The size of the rectangular cavity is adapted to the space occupied by the two tailgates 21 arranged side by side, that is, the area occupied by the rectangular cavity is greater than the combined area of ​​the two tailgates 21. Each tailgate 21 has a through gap 2A on its side wall corresponding to the column 13. The two through gaps 2A are of equal size, and each through gap 2A is provided with at least one hinge structure 3. The tailgate 21 can be rotatably connected to the column 13 through the hinge structure 3 to realize the opening and closing of the two tailgates 21.

[0036] Hinge structure 3, see Figure 3 The structure includes a pivot assembly 31 and rotating arms 32 and fixed arms 33 fixed on both sides of the pivot assembly 31. The rotating arms 32 and fixed arms 33 are mainly fixed to the pivot assembly 31 by welding, and all three are made of steel. The pivot assembly 31 is mainly exposed outside the through gap 2A and suspended. The rotating arm 32 is bolted to the inner wall of the tailgate 21 through the through gap 2A, and the fixed arm 33 is bolted to the side wall of the pillar 13 through the through gap 2A. When the tailgate 21 is closed, the rotating arm 32 and the fixed arm 33 are set at an acute angle, preferably 30°-80°. With this structural design, most of the volume of the rotating arm 32 and the fixed plate can be hidden between the inner wall of the tailgate 21 and the pillar 13, with only the pivot assembly 31 being completely exposed and suspended. This effectively avoids the probability of external forces such as flying stones and human-caused damage directly acting on the flap connection part 331 (the bolts on the rotating arm 32 and the fixed plate).

[0037] In this embodiment, the rotating arm 32 is a C-shaped rotating arm 32, and the length of the C-shaped rotating arm 32 is greater than the length of the fixed arm 33. Compared with the planar sheet structure of the hinge in the traditional hinge structure, it has higher structural strength and deformation resistance. The C-shaped arc design can effectively disperse the force during rotation, reduce stress concentration, and extend the service life of the rotating arm 32. Secondly, the arc design can also ensure that the tailgate 21 can provide a larger torque when it is opened, making the tailgate 21 easier to open and improving the convenience of user operation.

[0038] See Figures 4 to 6

[0039] In this embodiment, the pivot assembly 31 includes a rotating shaft 311 arranged in a stepped manner, two bushings 312 respectively movably sleeved on the two sides of the rotating shaft 311, and a friction sleeve 313 located between the rotating shaft 311 and the bushings 312. The inner diameter of the friction sleeve 313 is sleeved and connected to the rotating shaft 311, and the outer diameter of the friction sleeve 313 is sleeved and connected to the bushings 312. The friction sleeve 313 is used as a buffer structure, which can effectively reduce the direct friction and wear between the rotating shaft 311 and the bushings 312, and extend the service life of the pivot assembly 31. The rotating arm 32 is located between the two bushings 312 and is welded and fixed to the rotating shaft 311. The two bushings 312 are respectively welded and fixed to the fixed arm 33, so that the rotating arm 32 can rotate on the bushings 312 through the rotating shaft 311.

[0040] In this embodiment, the rotating shaft 311 includes a main shaft 311a and two auxiliary shafts 311b of the same diameter integrally formed on the left and right sides of the main shaft 311a. The diameter of the main shaft 311a is larger than the diameter of the auxiliary shafts 311b. The side protrusion of the fixed arm 33 forms two connecting parts 331 that are welded and fixed to the two auxiliary shafts 311b of the bushing 312 respectively. The slot 33A between the two connecting parts 331 corresponds exactly to the main shaft 311a of the rotating shaft 311, and the width of the slot 33A is greater than or equal to the axial length of the main shaft 311a of the rotating shaft 311. In this way, the setting position of the two connecting parts 331 can effectively avoid the rotating shaft 311, providing sufficient space for the rotation of the main shaft 311a of the rotating shaft 311, preventing the fixed arm 33 from interfering with the main shaft 311a of the rotating shaft 311, thereby preventing the rotating arm 32 from jamming and ensuring smooth operation.

[0041] In this embodiment, the design of the connecting part 331 on the side of the fixed arm 33 provides a clear welding position for the bushing 312, which facilitates processing and installation and improves the reliability and stability of the connection between the fixed arm 33 and the bushing 312.

[0042] In this embodiment, four hinge structures 3 are provided, with two each within the through gap 2A. These two hinge structures are arranged vertically, providing two support points for the tailgate 21. This ensures more even force distribution during opening and closing, reducing the risk of deformation due to unilateral force and improving the stability and reliability of the tailgate 21 structure. Therefore, each tailgate 21 is rotatably connected to the column 13 via two hinge structures 3, ensuring the rotational stability of the tailgate 21 and preventing tilting or deformation. In other embodiments, a single hinge structure 3 may be used, but it must be located in the middle of the tailgate 21.

[0043] In this embodiment, a sealing strip is provided between the upper crossbeam 11 and the lower crossbeam 12 of the tailgate 21. That is, by providing a sealing strip, the upper crossbeam 11 and the lower crossbeam 12 can fill the gap between the tailgate 21 and the frame assembly 1 when the tailgate 21 is closed, effectively preventing rainwater, dust, noise and other substances from entering the vehicle, thereby improving the vehicle's sealing and comfort.

[0044] The working principle and usage process of this utility model:

[0045] See Figures 4 to 6

[0046] Before installation, firstly, two friction sleeves 313 are respectively fitted onto the secondary shafts 311b on both sides of the rotating shaft 311; then, two bushings 312 are respectively fitted onto the outer diameter of the two friction sleeves 313; next, the rotating arm 32 is welded and fixed onto the main shaft 311a of the rotating shaft 311, and the two connecting parts 331 of the fixed arm 33 are respectively welded and fixed onto the two bushings 312 to complete the installation of the hinge structure 3.

[0047] See Figure 2 and Figure 3When installing the tailgate assembly 2, firstly, place the left tailgate 21 inside the rectangular cavity of the frame assembly 1, and use external tooling to position the left tailgate 21 at a certain height; secondly, place the entire hinge structure 3 between the left tailgate 21 and the column 13 of the frame assembly 1, wherein the rotating arm 32 and the fixed arm 33 in the hinge structure 3 must pass through the through gap 2A, so that most of the main body is hidden between the left tailgate 21 and the column 13, while the pivot assembly 31 in the hinge structure 3 is exposed outside the through gap 2A and suspended; thirdly, use bolts to screw the rotating arm 32 to the rear side of the left tailgate 21, and screw the fixed arm 33 to the side wall of the column 13, so that the hinge structure 3 is positioned at a certain height, and the left tailgate 21 is also limited to a certain height and can rotate on the column 13 through the hinge structure 3; fourthly, the right tailgate 21 is installed in the same way. Therefore, in this utility model, the rotating arm 32 and the fixed arm 33 of the hinge structure 3 are fixedly installed to the inner wall of the tailgate 21 and the side wall of the pillar 13 respectively through the through gap 2A, so that most of the volume is hidden between the inner wall of the tailgate 21 and the pillar 13, and only the pivot assembly 31 is completely exposed and suspended, which reduces the probability of external forces such as flying stones and human-caused damage directly acting on the leaf connection part 331 (such as bolts), effectively reduces the impact of rainwater erosion, and significantly improves the corrosion resistance and appearance of the structure. Secondly, when the tailgate 21 is closed, the rotating arm 32 and the fixed arm 33 are set at an angle. This structural design makes the hinge form a stable mechanical support structure when closed. Compared with the traditional hinge with two leaves exposed on the same plane, the angled design can distribute the external impact force to the column 13 and the tailgate 21 through the rotating arm 32 and the fixed arm 33, reducing the load of single-point force (such as the bolt connection of traditional leaves), thereby reducing the risk of bolts loosening due to vibration or external impact, effectively resisting the external impact on the tailgate 21, reducing the shaking and displacement of the tailgate 21, and enhancing the stability of the tailgate 21 when closed.

[0048] The foregoing description of the specifications and embodiments is intended to explain the scope of protection of this utility model, but does not constitute a limitation on the scope of protection of this utility model. Modifications, equivalent substitutions, or other improvements to the embodiments of this utility model or a portion thereof that can be obtained by those skilled in the art through logical analysis, reasoning, or limited experimentation, based on the teachings of this utility model or the foregoing embodiments, should all be included within the scope of protection of this utility model.

Claims

1. A dual-action tailgate structure for a vehicle, characterized by: include: The frame assembly, tailgate assembly, and hinge structure; among them, The frame assembly includes an upper crossbeam, a lower crossbeam, and two columns arranged on the left and right sides; the two columns are respectively welded to the left and right sides of the upper and lower crossbeams and are arranged in parallel opposite directions to form a rectangular cavity for accommodating and installing the tailgate assembly. The tailgate assembly includes two tailgates arranged side by side within the rectangular cavity; each tailgate has a through gap on its side wall corresponding to the pillar, and each through gap is provided with at least one hinge structure, and the tailgate is rotatably connected to the pillar through the hinge structure. The hinge structure includes a pivot assembly and a rotating arm and a fixed arm fixed on both sides of the pivot assembly; the pivot assembly is exposed outside the through gap and suspended; the rotating arm is screwed to the inner wall of the tailgate through the through gap, and the fixed arm is screwed to the side wall of the pillar through the through gap; when the tailgate is closed, the rotating arm and the fixed arm are set at an angle.

2. The double-opening tailgate structure for vehicles as described in claim 1, characterized in that: The pivot assembly includes a rotating shaft and two bushings that are movably fitted onto the two sides of the rotating shaft. The rotating arm is located between the two bushings and is welded and fixed to the rotating shaft. The two bushings are welded and fixed to the fixed arm, so that the rotating arm can rotate on the bushings via the rotating shaft.

3. A double-opening tailgate structure suitable for vehicles as described in claim 2, characterized in that: The rotating shaft is arranged in a stepped manner; the rotating shaft includes a main shaft and two auxiliary shafts of the same diameter integrally formed on the left and right sides of the main shaft, and the diameter of the main shaft is larger than the diameter of the auxiliary shafts.

4. A double-opening tailgate structure suitable for vehicles as described in claim 3, characterized in that: The side protrusion of the fixed arm forms two connecting parts that are welded and fixed to the bushing respectively, and the groove between the two connecting parts corresponds to the secondary shaft of the rotating shaft.

5. A double-opening tailgate structure suitable for vehicles as described in claim 4, characterized in that: The width of the slot is greater than or equal to the length of the spindle.

6. A double-opening tailgate structure suitable for vehicles as described in claim 5, characterized in that: The pivot assembly also includes a friction sleeve located between the rotating shaft and the bushing, wherein the inner diameter of the friction sleeve is sleeved and connected to the rotating shaft, and the outer diameter of the friction sleeve is sleeved and connected to the bushing.

7. A double-opening tailgate structure suitable for vehicles as described in claim 1, characterized in that: Two hinge structures are provided within the through gap, and the tailgate is rotatably connected to the column through the two hinge structures.

8. A double-opening tailgate structure for vehicles as described in claim 1, characterized in that: A sealing strip is provided between the upper and lower crossbeams of the tailgate.

9. A double-opening tailgate structure for vehicles as described in claim 1, characterized in that: The rotating arm is configured as a C-shaped rotating arm, and the length of the C-shaped rotating arm is greater than the length of the fixed arm.

10. A double-opening tailgate structure for vehicles as described in claim 1, characterized in that: The included angle between the rotating arm and the fixed arm is 30°-80°.

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