Vehicle back door jig

Abstract

The utility model relates to a vehicle back door jig which is used for a vehicle coating process, a vehicle comprises a back door and a vehicle body side wall, and the vehicle back door jig is used for supporting the back door. The back door comprises an inner plate and an outer plate, a cavity is formed between the inner plate and the outer plate, a plurality of first limiting holes which penetrate through the inner plate and communicate with the cavity are formed in the back door, and a limiting ring located in the cavity is arranged on the back door. The vehicle back door jig comprises a supporting piece, a plurality of first limiting pieces, a plurality of second limiting pieces and a locking piece, the first limiting pieces and the second limiting pieces are arranged on the supporting piece, and the first limiting pieces are used for abutting against the surface of the side, away from an outer plate, of an inner plate. The second limiting piece is configured to partially pass through the first limiting hole to enter the cavity and can rotate relative to the supporting piece to hook the limiting ring. The locking piece is connected with the second limiting piece so as to limit rotation of the second limiting piece when the second limiting piece hooks the limiting ring. According to the back door jig, the problems that an existing back door jig is tedious in operation step and has the risk of thread loosening can be solved.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle manufacturing and painting, and in particular to a vehicle tailgate fixture. Background Art

[0002] When painting the inner panels of the vehicle body, the back door needs to be opened to keep the back door away from the inner surface of the body side. At present, a back door fixture is usually used to support the back door to keep it open, but the back door fixture and the back door are generally locked by threaded connection, which has cumbersome operation steps and there is a risk of thread slippage. Summary of the invention

[0003] Based on this, it is necessary to provide a vehicle tailgate fixture in view of the problem that the tailgate fixture currently used in the body inner panel painting process generally adopts a threaded connection to lock, the operation steps are cumbersome, and there is a risk of thread slippage.

[0004] According to one aspect of the present application, a vehicle back door jig is provided, the vehicle back door jig is used in a vehicle painting process, the vehicle includes a back door and a body side, the vehicle back door jig is used to support the back door so that the back door is separated from the body side; the back door includes an inner plate and an outer plate, a cavity is provided between the inner plate and the outer plate, the back door is provided with a plurality of first limiting holes penetrating the inner plate and communicating with the cavity, and the back door is provided with a limiting ring located in the cavity; the vehicle back door jig includes: a support member; a plurality of first limiting members and a plurality of second limiting members, all of which are provided on the support member, the first limiting member is configured to abut against a side surface of the inner plate away from the outer plate, the second limiting member is configured to partially pass through the first limiting hole and enter the cavity, and the second limiting member is configured to be able to rotate relative to the support member and hook the limiting ring; and a locking member connected to the second limiting member to limit the rotation of the second limiting member when the second limiting member hooks the limiting ring.

[0005] In some embodiments, one end of the first limiting member is fixed to the support member, and the other end extends in a direction away from the support member, and the end of the first limiting member away from the support member is configured to abut against a surface of the inner panel facing away from the outer panel; the second limiting member includes a connected connecting section and a bending section, one end of the connecting section is connected to the support member, and the other end extends in a direction away from the support member, the extension direction of the bending section intersects with the extension direction of the connecting section, and the bending section is configured to be inserted into the cavity through the first limiting hole.

[0006] In some embodiments, the second limiting member also includes a rotating seat rotatably connected to the supporting member, the rotating seat having a first surface and a second surface that intersect each other; the locking member includes a spring, the spring having two free ends, the extension directions of the two free ends intersecting, and one of the free ends is fixed to the supporting member, and the other free end abuts against the first surface or the second surface of the rotating seat.

[0007] In some embodiments, the rotating seat further has a third surface connected between the first surface and the second surface, the third surface is configured as an arc surface, and the third surface intersects with the first surface and the second surface respectively.

[0008] In some embodiments, the second limiting member further includes an operating handle connected to an end of the connecting section away from the bending section, and the operating handle is fixed relative to the connecting section.

[0009] In some embodiments, the operating handle is configured to be T-shaped or L-shaped.

[0010] In some embodiments, the support member includes a support rod and a connecting plate, wherein the connecting plate is fixed to one end of the support rod; and the first limiting member and the second limiting member are disposed on the connecting plate.

[0011] In some embodiments, at least two first limiting members spaced apart from each other are disposed on the connecting plate.

[0012] In some embodiments, the tailgate is further provided with a plurality of second limiting holes that penetrate the inner panel and communicate with the cavity; the vehicle tailgate fixture also includes a third limiting member provided on the support member, and the third limiting member is constructed to be able to enter the cavity through the second limiting hole and abut against a side surface of the inner panel facing the outer panel.

[0013] In some embodiments, a plurality of the third limiting members are provided, and any two of the third limiting members are arranged in a triangle with the second limiting member.

[0014] The vehicle back door fixture provided by the present application is provided with a first stopper and a second stopper on a support member, the first stopper is used to abut against a side surface of the back door inner plate, and the second stopper is used to rotate and hook the stopper ring between the back door inner plate and the back door outer plate after passing through the stopper hole, so that the back door is locked by the first stopper and the second stopper. The vehicle back door fixture is locked by rotation when assembled with the back door, avoiding the traditional method of tightening bolts, eliminating the risk of thread slippage, and prolonging the service life of the fixture. In addition, the steps are few, the operation is simple, and the work efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the three-dimensional structure of a vehicle tailgate fixture in one embodiment of the present application is shown.

[0016] Figure 2 A schematic diagram of the assembly state of a vehicle tailgate fixture and a tailgate in one embodiment of the present application is shown.

[0017] Figure 3 A schematic diagram of the three-dimensional structure of a vehicle tailgate fixture from another perspective in one embodiment of the present application is shown.

[0018] Figure 4 A schematic diagram of the three-dimensional structure of the second limiting member and the locking member in an embodiment of the present application is shown.

[0019] Figure 5-Figure 8 The schematic diagrams of the structure of the vehicle tailgate fixture of the present application at different viewing angles are shown respectively.

[0020] Description of Figure Numbers:

[0021] 1. Vehicle back door fixture; 2. Back door; 21. Inner panel;

[0022] 10. Support member; 11. Support rod; 12. Connecting plate; 13. Support handle;

[0023] 20. A first limiting member;

[0024] 30. second stopper; 31. connecting section; 32. bending section; 33. rotating seat; 331. first surface; 332. second surface; 333. third surface; 34. operating handle;

[0025] 40. Locking piece;

[0026] 50. The third limiter. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0028] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0029] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0030] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0031] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0032] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0033] During the manufacturing process of vehicles, the body topcoat painting process is involved to improve the corrosion resistance and aesthetics of the body. When painting the inner body panel, the back door needs to be opened to keep the back door away from the inner surface of the body side. In the related art, a back door fixture is usually used to support the back door to keep the back door open.

[0034] The current tailgate fixture usually includes a longitudinal support rod and a transverse fixing rod. One end of the longitudinal support rod is used to abut against the vehicle body, and the other end is connected to the transverse fixing rod. The transverse fixing rod and the tailgate are locked with each other to support the tailgate.

[0035] Among them, the back door fixture and the back door are generally locked by threaded connection. For example, studs or mounting holes are set on the back door fixture. When installing the back door fixture on the body, it is necessary to first lift the back door and position the back door fixture at the back door lock mounting point, and then tighten the screw that matches the stud thread by hand, or use an electric gun to tighten the bolt at the mounting hole to achieve the locking between the back door fixture and the back door.

[0036] However, after multiple extreme and harsh working conditions such as multiple spraying, repeated high-temperature baking, chemical immersion, high-pressure water gun impact, multiple tightening and loosening, the threaded connection method has the risk of thread stripping, which affects the service life of the fixture. In addition, the electric gun method of tightening the bolts requires more parts and tools, the operation steps are cumbersome, and it takes a long time.

[0037] In order to solve the above problems, the present application provides a vehicle tailgate fixture, which is provided with a fixed first limiter and a rotatable second limiter on a support member, and the first limiter is used to abut against a side surface of the tailgate inner panel, and the second limiter is used to rotate through a limit hole and hook the limit ring between the tailgate inner panel and the tailgate outer panel, so that the tailgate is locked by the first limiter and the second limiter. The vehicle tailgate fixture is locked by rotation when assembled with the tailgate, avoiding the traditional method of tightening bolts, eliminating the risk of thread slippage, and prolonging the service life of the fixture. It also has fewer steps, simple operation, and improved work efficiency.

[0038] See also Figure 1 and Figure 2A vehicle tailgate jig 1 provided in one embodiment of the present application is used in a vehicle painting process. The vehicle includes a tailgate 2 and a body side. The vehicle tailgate jig 1 is used to support the tailgate 2 to separate the tailgate 2 from the body side, thereby facilitating painting the inner side of the body.

[0039] The back door 2 includes an inner plate 21 and an outer plate, and there is a cavity between the inner plate 21 and the outer plate. The back door 2 is provided with a plurality of first limiting holes (not shown in the figure) penetrating the inner plate 21 and communicating with the cavity, and the back door 2 is provided with a limiting ring (not shown in the figure) located in the cavity. The inner plate lock buckle of the car back door can be reused as the limiting ring, and a U-shaped, C-shaped, semicircular or other shaped structure can also be additionally fixed on the back door 2 to form a limiting ring in combination with the back door 2.

[0040] The vehicle back door fixture 1 includes a support member 10, a plurality of first limiting members 20, a plurality of second limiting members 30 and a locking member 40. The plurality of first limiting members 20 and the plurality of second limiting members 30 are all arranged on the support member 10, wherein the first limiting member 20 is configured to abut against a surface of a side of the inner plate 21 away from the outer plate, the second limiting member 30 is configured to partially pass through the first limiting hole and enter the cavity, and the second limiting member 30 is configured to be able to rotate relative to the support member 10 and hook the limiting ring. The locking member 40 is connected to the second limiting member 30 to limit the rotation of the second limiting member 30 when the second limiting member 30 hooks the limiting ring.

[0041] The support member 10 may be a single rod-shaped structure, a combination of multiple rod-shaped structures, or a combination of a rod-shaped structure and a plate-shaped structure.

[0042] It is understandable that the direction in which the second stopper 30 hooks the stopper ring can be designed according to the requirements. For example, the second stopper 30 can hook the stopper ring from bottom to top, from top to bottom, from left to right, or from right to left. Wherein, upward can be vertically upward or tilted upward; downward can be vertically downward or tilted downward; leftward can be horizontally leftward or tilted leftward; rightward can be horizontally rightward or tilted rightward.

[0043] When the first limiting member 20 abuts against the surface of the side of the inner panel 21 away from the outer panel, and a portion of the second limiting member 30 enters the cavity through the first limiting hole and rotates relative to the support member 10 to hook the limiting ring, the back door 2 will press the vehicle back door fixture 1 under the action of gravity, and the end of the support member 10 away from the back door 2 can abut against the bottom of the vehicle body or other parts to prevent the back door 2 from continuing to fall. At the same time, the locking member 40 limits the rotation of the second limiting member 30. Therefore, the second limiting member 30 can maintain the state of hooking the limiting ring, and the first limiting member 20 can generate a supporting force on the inner panel 21 of the back door 2 toward the outer panel, so that the back door 2 is locked by the first limiting member 20 and the second limiting member 30.

[0044] Based on this, the vehicle back door fixture 1 and the back door 2 are locked by rotation when they are assembled, avoiding the traditional method of tightening bolts, eliminating the risk of thread slippage, and increasing the service life of the fixture. In addition, there are fewer steps, simple operation, and improved work efficiency. In addition, when assembling the vehicle back door fixture 1 and the back door 2, there is no need to take other parts, reducing motion waste, and the vehicle back door fixture 1 has a simple design structure, is easy to operate, and has a long service life.

[0045] Optionally, the first limiting hole is configured as an elongated strip, for example, the first limiting hole is configured as an ellipse, a waist, etc. In this way, the length and width of the first limiting hole differ greatly, so that the second limiting member 30 can smoothly enter the first limiting hole, and the second limiting member 30 cannot leave the first limiting hole after rotating, for example, 90°.

[0046] Furthermore, the original holes on the vehicle body can be reused as limiting holes, thereby simplifying the process.

[0047] In some embodiments, one end of the first stopper 20 is fixed to the support member 10, and the other end extends in a direction away from the support member 10, and the end of the first stopper 20 away from the support member 10 is configured to abut against a surface of the inner plate 21 on one side away from the outer plate. Exemplarily, the first stopper 20 is configured as a stopper column, and the cross-sectional shape of the stopper column is circular, elliptical, annular, triangular, quadrilateral, pentagonal, hexagonal, or a combination of at least two thereof.

[0048] Combination Figure 1 , Figure 3 and Figure 4 The second stopper 30 includes a connecting section 31 and a bending section 32 connected to each other. One end of the connecting section 31 is connected to the support member 10, and the other end extends in a direction away from the support member 10. The extending direction of the bending section 32 intersects with the extending direction of the connecting section 31, and the bending section 32 is configured to be inserted into the cavity through the first stopper hole. For example, the connecting section 31 and the bending section 32 are combined to form an L shape.

[0049] Based on this, the second limit member 30 hooks the limit ring to limit the movement of the back door 2, and the end face of the first limit member 20 abuts against the inner plate 21 of the back door 2 to support the back door 2, so that the gravity of the back door 2 is dispersed to the first limit member 20 and the second limit member 30, thereby reducing the reaction force of the second limit member 30 on the back door 2, reducing the tension on the back door 2 at the limit ring, and preventing the back door 2 from being deformed by the second limit member 30.

[0050] Optionally, the second stopper 30 further includes a rotating seat 33 rotatably connected to the support member 10, and the rotating seat 33 has a first surface 331 and a second surface 332 intersecting each other. The locking member 40 includes a spring, and the spring has two free ends, the extension directions of the two free ends intersect each other, and one of the free ends is fixed to the support member 10, and the other free end abuts against the first surface 331 or the second surface 332 of the rotating seat 33. In this way, when the first surface 331 of the rotating seat 33 abuts against one free end of the spring, since the other free end of the spring is fixed to the support member 10, the spring action of the spring will cause an interactive extrusion force to be generated between the rotating seat 33 and the spring. At the same time, since the first surface 331 intersects with the second surface 332, if the second stopper 30 is to be rotated, it is necessary to overcome a larger extrusion force so that the rotating seat 33 rotates until the second surface 332 abuts against one free end of the spring. Based on this, the rotation of the second limit member 30 needs to rely on external force, that is, in the absence of manual operation by an operator, the second limit member 30 will be locked by the locking member 40, so that the vehicle tailgate fixture 1 can stably support the tailgate 2.

[0051] Optionally, the angle between the first surface 331 and the second surface 332 is an acute angle, a right angle, or an obtuse angle. In an exemplary embodiment, the angle between the first surface 331 and the second surface 332 is a right angle. In this way, the force that needs to be overcome by the rotation of the rotating seat 33 is moderate, so that the rotating seat 33 is not prone to accidental rotation, and manual rotation can also be smoothly completed.

[0052] Optionally, the rotating seat 33 further has a third surface 333 connected between the first surface 331 and the second surface 332, and the third surface 333 is configured as an arc surface, and the third surface 333 intersects with the first surface 331 and the second surface 332. In this way, when the rotating seat 33 rotates until the third surface 333 abuts against the spring, since the third surface 333 is an arc surface, the rotating seat 33 will continue to rotate under the action of the spring and it is difficult to maintain stability, so that it is convenient for the operator to judge whether it has been rotated in place and whether it has been rotated excessively.

[0053] In some embodiments, the second position-limiting member 30 further includes an operating handle 34 connected to one end of the connecting section 31 away from the bending section 32, and the operating handle 34 is fixed relative to the connecting section 31. Exemplarily, the operating handle 34 is configured to be T-shaped, L-shaped, arc-shaped, circular or semicircular. In this way, the setting of the operating handle 34 makes it easier for the operator to rotate the second position-limiting member 30, thereby improving convenience.

[0054] See also Figure 1 and Figure 2In some embodiments, the support member 10 includes a support rod 11 and a connecting plate 12, and the connecting plate 12 is fixed to one end of the support rod 11. The first stopper 20 and the second stopper 30 are arranged on the connecting plate 12. By setting the connecting plate 12, the contact area between the support member 10 and the back door 2 is increased, so that the arrangement positions of the first stopper 20 and the second stopper 30 can be flexibly adjusted according to needs to improve the stability of the support.

[0055] Optionally, the support member 10 further includes a support handle 13 connected to one end of the support rod 11 away from the connecting plate 12. The provision of the support handle 13 increases the contact area between the support member 10 and the vehicle body, making the support effect more stable.

[0056] Combination Figure 1 , Figure 5-Figure 8 Optionally, at least two mutually spaced first stoppers 20 are provided on the connecting plate 12. In an exemplary embodiment, the connecting plate 12 is configured as a quadrilateral, and two first stoppers 20 are provided on the connecting plate 12, and the two first stoppers 20 are located at two adjacent vertices of the quadrilateral. In this way, the multiple first stoppers 20 cooperate with each other to improve the stop effect.

[0057] In some embodiments, the back door 2 is also provided with a plurality of second limiting holes that penetrate the inner plate 21 and communicate with the cavity. The vehicle back door jig 1 also includes a third limiting member 50 provided on the support member 10, and the third limiting member 50 is configured to be able to enter the cavity through the second limiting hole and abut against the side surface of the inner plate 21 facing the outer plate. Optionally, the third limiting member 50 is configured to be L-shaped. Based on this, before the back door 2 and the vehicle back door jig 1 are fixed by the second limiting member 30, the vehicle back door jig 1 can be positioned by the third limiting member 50, and then the back door 2 can be supported by the first limiting member 20 to prevent the vehicle back door jig 1 from falling off, so that the overall posture of the vehicle back door jig 1 remains stable.

[0058] Optionally, a plurality of third position limiting members 50 are provided, wherein any two third position limiting members 50 and the second position limiting member 30 are arranged in a triangle.

[0059] For example, the third stopper 50 is provided on the connecting plate 12, the connecting plate 12 is configured as a quadrilateral, the number of the third stopper 50 is two, the two third stoppers 50 are located at two adjacent vertices of the quadrilateral, and the second stopper 30 is located at the center of the quadrilateral. In this way, the two third stoppers 50 and one second stopper 30 are arranged in a triangle, which improves stability.

[0060] It is understandable that when other parts of the vehicle, such as the engine hood, need support, a fixture with the same or similar structure to the above-mentioned vehicle tailgate fixture 1 can also be used, using the round holes, oblong holes and other hole structures on the hood as limiting holes to achieve the effect of support without bolting.

[0061] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0062] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A vehicle back door fixture, characterized in that: The vehicle back door fixture is used in a vehicle painting process. The vehicle includes a back door and a body side. The vehicle back door fixture is used to support the back door so that the back door is separated from the body side. The back door includes an inner plate and an outer plate. A cavity is provided between the inner plate and the outer plate. The back door is provided with a plurality of first limiting holes that penetrate the inner plate and are connected to the cavity, and the back door is provided with a limiting ring located in the cavity. The vehicle back door fixture comprises: Supports; a plurality of first limiting members and a plurality of second limiting members, all of which are disposed on the support member, wherein the first limiting member is configured to abut against a surface of the inner plate on one side facing away from the outer plate, and the second limiting member is configured to partially pass through the first limiting hole and enter the cavity, and the second limiting member is configured to be rotatable relative to the support member to hook the limiting ring; and A locking member is connected to the second limiting member to limit the rotation of the second limiting member when the second limiting member hooks the limiting ring.

2. The vehicle back door fixture according to claim 1, characterized in that: One end of the first stopper is fixed on the support member, and the other end extends in a direction away from the support member, and the end of the first stopper away from the support member is configured to abut against a surface of a side of the inner plate away from the outer plate; The second limiting member includes a connecting section and a bending section that are connected to each other, one end of the connecting section is connected to the supporting member, and the other end extends in a direction away from the supporting member, the extension direction of the bending section intersects with the extension direction of the connecting section, and the bending section is configured to be inserted into the cavity through the first limiting hole.

3. The vehicle back door fixture according to claim 2, characterized in that: The second stopper also includes a rotating seat rotatably connected to the support member, and the rotating seat has a first surface and a second surface intersecting each other; The locking member includes a spring having two free ends, the extension directions of the two free ends intersecting with each other, one of the free ends being fixed to the supporting member, and the other free end being in contact with the first surface or the second surface of the rotating seat.

4. The vehicle back door fixture according to claim 3, characterized in that: The rotating seat further has a third surface connected between the first surface and the second surface. The third surface is configured as an arc surface and intersects with the first surface and the second surface respectively.

5. The vehicle back door fixture according to claim 2, characterized in that: The second position-limiting member further includes an operating handle connected to an end of the connecting section away from the bending section, and the operating handle is fixed relative to the connecting section.

6. The vehicle back door fixture according to claim 5, characterized in that: The operating handle is configured in a T shape or an L shape.

7. The vehicle back door fixture according to claim 2, characterized in that: The support member comprises a support rod and a connecting plate, wherein the connecting plate is fixed to one end of the support rod; The first limiting member and the second limiting member are arranged on the connecting plate.

8. The vehicle back door fixture according to claim 7, characterized in that: At least two first limiting members spaced apart from each other are disposed on the connecting plate.

9. The vehicle tailgate fixture according to any one of claims 1 to 8, characterized in that: The back door is also provided with a plurality of second limiting holes penetrating through the inner plate and communicating with the cavity; The vehicle tailgate jig further includes a third position-limiting member disposed on the support member, wherein the third position-limiting member is configured to be able to enter the cavity through the second position-limiting hole and abut against a surface of the inner panel on one side facing the outer panel.

10. The vehicle back door fixture according to claim 9, characterized in that: There are multiple third limiting members, and any two of the third limiting members are arranged in a triangle with the second limiting member.

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