Mounting tool for a back door assembly

By using the installation fixture for the tailgate assembly, the positioning part corresponds to the first feature part of the tailgate body, which solves the problem of surface difference and gap accumulation between the tailgate exterior panel and the vehicle body side panel, and achieves higher installation accuracy and consistency.

CN224466009UActive Publication Date: 2026-07-07AVATR CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
AVATR CO LTD
Filing Date
2025-07-03
Publication Date
2026-07-07

AI Technical Summary

Technical Problem

During the installation of the tailgate body and the tailgate exterior trim panel, the lack of installation and adjustment reference points leads to the accumulation of surface differences and gaps, making it impossible to meet the gap and surface difference requirements between the tailgate exterior trim panel and the vehicle body side panel.

Method used

A mounting fixture for a tailgate assembly is provided, wherein the positioning part corresponds to the first feature part of the tailgate body, and the assembly position of the tailgate body is adjusted to shorten the gap and surface difference between the tailgate exterior panel and the vehicle body side panel.

Benefits of technology

By adjusting the position of the tailgate body, the gap and surface difference between the tailgate exterior panel and the vehicle side panel meet the tolerance requirements, achieving higher installation precision and consistency.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN224466009U_ABST
    Figure CN224466009U_ABST
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Abstract

This application relates to the field of vehicle technology and discloses an installation fixture for a tailgate assembly. The tailgate assembly includes a tailgate body and a tailgate exterior panel. The tailgate body is mounted on the vehicle body, and the tailgate exterior panel is mounted on the outer side of the tailgate body. The installation fixture assists in the installation of the tailgate body. The tailgate body has a first feature portion, and the tailgate exterior panel has a second feature portion corresponding to the first feature portion. The installation fixture includes a first mounting portion and a positioning portion. The first mounting portion is movably mounted on the tailgate body, and the positioning portion has the same structural features as at least a portion of the second feature portion, so that the assembly position of the tailgate body can be adjusted by the relative position between the positioning portion and the first feature portion during tailgate body installation. The tailgate assembly installation fixture provided in this application installs the fixture onto the tailgate body, such that the positioning portion corresponds to at least a portion of the second feature portion, thereby reducing the gap and surface difference between the tailgate exterior panel and the vehicle body side panel.
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Description

Technical Field

[0001] This application relates to the field of vehicle technology, and more particularly to an installation fixture for a tailgate assembly. Background Technology

[0002] In the relevant technology, the vehicle includes a tailgate body and a tailgate exterior panel. The tailgate body is installed on the vehicle body, and the tailgate exterior panel is installed on the outer side of the tailgate body. The tailgate body is made of metal sheet, while the tailgate exterior panel is made of plastic. The tailgate body is installed onto the vehicle body in the welding workshop, while the tailgate exterior panel is installed in the final assembly workshop. When the tailgate body is installed in the welding workshop, there is no usable assembly reference point between the tailgate body and the tailgate exterior panel. The tailgate body is directly installed onto the vehicle body, resulting in a certain surface difference and gap between the tailgate body and the vehicle body side panel. When the tailgate exterior panel is then installed onto the tailgate, the installation reference point for the tailgate exterior panel is the tailgate body. This leads to a certain surface difference and gap between the tailgate exterior panel and the tailgate body. The accumulation of multiple surface differences and gaps results in a larger surface difference and gap between the tailgate exterior panel and the vehicle body side panel, failing to meet the requirements for gap and surface difference between the tailgate exterior panel and the vehicle body side panel. Utility Model Content

[0003] In view of this, the present application provides an installation fixture for a tailgate assembly, which is installed on the tailgate body such that the positioning part corresponds to at least a portion of the second feature part, so as to shorten the gap and surface difference between the tailgate exterior panel and the vehicle body side panel.

[0004] To achieve the above objectives, the technical solution of this application embodiment is implemented as follows:

[0005] This application provides an installation fixture for a tailgate assembly. The tailgate assembly includes a tailgate body and a tailgate exterior panel. The tailgate body is mounted on a vehicle body, and the tailgate exterior panel is mounted on the outer side of the tailgate body. The installation fixture assists in the installation of the tailgate body. The tailgate body has a first feature portion, and the tailgate exterior panel has a second feature portion corresponding to the first feature portion. The installation fixture includes a first mounting portion and a positioning portion. The first mounting portion is movably mounted on the tailgate body, and the positioning portion has the same structural features as at least a portion of the second feature portion, so as to adjust the assembly position of the tailgate body by means of the relative position between the positioning portion and the first feature portion when installing the tailgate body.

[0006] The tailgate assembly installation fixture provided in this application embodiment is installed onto the tailgate body by a first installation part, and the positioning part corresponds to at least part of the second feature part. The position of the tailgate body is adjusted according to the surface difference and gap size so that the surface difference and gap size between the tailgate body, the installation fixture and the vehicle side panel meet the tolerance requirements, thereby shortening the gap and surface difference between the tailgate exterior panel and the vehicle side panel.

[0007] In one possible implementation of this application, the first feature portion includes the outer contour plate of the back door body, and the positioning portion has the same structural features as at least a portion of the outer contour plate.

[0008] In one possible implementation of this application, the outer contour plate has multiple outer contour segments along the vertical direction, and the positioning part has the same structural features as at least one of the outer contour segments.

[0009] In one possible implementation of this application, two of the multiple outer contour segments are a first outer contour segment and a second outer contour segment, both of which are arc-shaped segments. The first outer contour segment has the largest curvature, and the second outer contour segment has the smallest curvature. The positioning part has the same structural features as the first outer contour segment or the second outer contour segment.

[0010] In one possible implementation of this application, the mounting fixture includes a first mounting fixture and a second mounting fixture. Both the first mounting fixture and the second mounting fixture include a first mounting part and a positioning part. The positioning part of the first mounting fixture has the same structural features as the first outer contour segment, and the positioning part of the second mounting fixture has the same structural features as the second outer contour segment.

[0011] In one possible implementation of this application, there are two first mounting fixtures, which are spaced apart along the left and right directions of the back door body; and / or, there are two second mounting fixtures, which are spaced apart along the left and right directions of the back door body.

[0012] In one possible implementation of this application, the installation fixture includes an installation plate connected to the positioning part. The installation plate has a first installation part on the side facing the back door body, and the back door body has a second installation part on the side facing the installation fixture. The second installation part is positioned and cooperates with the first installation part.

[0013] In one possible implementation of this application, the first mounting part includes a mounting block and a fixing pin. The mounting block is movably disposed on the mounting plate. The mounting block has a first mounting surface on the side facing the back door body. The second mounting part includes a second mounting surface and a mounting hole. The second mounting surface is positioned and engaged with the first mounting surface, and the mounting hole is positioned and engaged with the fixing pin.

[0014] In one possible implementation of this application, the fixing pin is provided on the first mounting surface.

[0015] In one possible implementation of this application, there are multiple mounting blocks, and the shape formed by connecting the multiple mounting blocks is a triangle. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a first mounting fixture according to some embodiments of this application;

[0017] Figure 2 yes Figure 1 The front view of the first mounting fixture in the process;

[0018] Figure 3 yes Figure 1 Side view of the first mounting fixture in the process;

[0019] Figure 4 yes Figure 1 A view of the first mounting fixture in the diagram;

[0020] Figure 5 This is a schematic diagram of a second mounting fixture according to some embodiments of this application;

[0021] Figure 6 yes Figure 5 The front view of the second mounting fixture in the image;

[0022] Figure 7 yes Figure 5 Side view of the second mounting fixture in the image;

[0023] Figure 8 yes Figure 5 The attached view of the second mounting fixture.

[0024] Figure label:

[0025] 11. First installation fixture;

[0026] 12. Second installation fixture;

[0027] 13. Positioning part; 14. Mounting plate; 141. First mounting part; 142. Mounting block; 143. First mounting surface; 144. Fixing pin; 145. Mounting handle; 146. Connecting plate. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the specific technical solutions of this application will be further described in detail below with reference to the accompanying drawings of the embodiments of this application. The following embodiments are used to illustrate this application, but are not intended to limit the scope of this application.

[0029] In the embodiments of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this application, unless otherwise stated, "multiple" means two or more.

[0030] Furthermore, in the embodiments of this application, directional terms such as "upper," "lower," "left," and "right" are defined relative to the positions in which the components are schematically placed in the accompanying drawings. It should be understood that these directional terms are relative concepts, used for relative description and clarification, and can change accordingly depending on the position of the components in the accompanying drawings.

[0031] In the embodiments of this application, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, "connection" can mean a fixed connection, a detachable connection, or an integral part; it can mean a direct connection or an indirect connection through an intermediate medium.

[0032] In embodiments of this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0033] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design that is described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0034] This application provides a tailgate assembly for a vehicle. It should be noted that the vehicle in this application can refer to a large vehicle, a small vehicle, a special-purpose vehicle, etc. For example, according to vehicle type, the vehicle in this application can be a sedan, an off-road vehicle, a multi-purpose vehicle (MPV), or another type of vehicle. The tailgate assembly includes a tailgate body and a tailgate exterior panel. The tailgate body is mounted on the vehicle body, and the tailgate exterior panel is mounted on the outer side of the tailgate body. The tailgate body is made of metal sheet, while the tailgate exterior panel is made of plastic. The tailgate body is installed onto the vehicle body in the welding workshop, while the tailgate exterior panel is installed onto the tailgate body in the final assembly workshop. When installing the tailgate body in the welding workshop, there is no available reference point for installation between the tailgate body and the tailgate exterior trim panel. The tailgate body is directly installed onto the vehicle body, resulting in a certain surface difference and gap between the tailgate body and the vehicle side panel. However, when installing the tailgate exterior trim panel in the final assembly workshop, the tailgate body is used as the installation reference point. This also results in a certain surface difference and gap between the tailgate exterior trim panel and the tailgate body. Due to the accumulation of multiple levels of surface differences and gaps, the surface difference and gap between the tailgate exterior trim panel and the vehicle side panel will be even greater. The gap tolerance between the tailgate exterior trim panel and the vehicle side panel is ±1.8mm, and the surface difference tolerance is ±2.0mm, which cannot meet the requirements for the gap and surface difference between the tailgate exterior trim panel and the vehicle side panel.

[0035] Based on this, the present application provides an installation fixture for a tailgate assembly, wherein the tailgate body has a first feature portion and the tailgate exterior panel has a second feature portion, the second feature portion corresponding to the first feature portion, and the tailgate exterior panel corresponding to the first feature portion through the second feature portion, the second feature portion corresponding to the first feature portion can play the role of positioning the tailgate exterior panel, and the tailgate exterior panel can be installed on the outer side of the tailgate body.

[0036] The mounting fixture includes a first mounting part 141 and a positioning part 13. The first mounting part 141 is movably mounted on the tailgate body. The positioning part 13 has the same structural features as at least part of the second feature part. The mounting fixture can be installed on the tailgate body by means of the relative position between the positioning part 13 and the first feature part. The mounting fixture can be understood as replacing the tailgate exterior panel. When installing the tailgate body, the mounting position of the tailgate body is adjusted by means of the relative position between the positioning part 13 and the first feature part to reduce the gap and surface difference between the tailgate exterior panel and the vehicle side panel. After the tailgate body is installed, the mounting fixture can be removed from the tailgate body.

[0037] The mounting fixture is installed onto the tailgate body via the first mounting part 141, and the positioning part 13 corresponds to at least part of the second feature part. This is equivalent to installing the tailgate exterior trim panel onto the tailgate body in the welding workshop. Then, the surface difference and gap size between the tailgate body and the vehicle side panel are measured with a measuring ruler. The position of the tailgate body is adjusted according to the surface difference and gap size so that the surface difference and gap size between the tailgate body and the vehicle side panel meet the tolerance requirements. Then, the tailgate body and the vehicle body are fixed, the mounting fixture is removed, and then the tailgate exterior trim panel is installed onto the tailgate body in the final assembly workshop. Since the mounting point of the tailgate exterior trim panel on the tailgate body is inherited from the mounting point of the mounting fixture on the tailgate body, the gap and surface difference between the tailgate exterior trim panel and the vehicle side panel can be shortened, so that the gap tolerance between the tailgate exterior trim panel and the vehicle side panel can reach ±1.0mm.

[0038] For example, the tailgate body can be pre-installed on the vehicle body with bolts. Then, the mounting fixture is installed on the tailgate body according to the same structural features of the positioning part 13 and the second feature part. Then, the surface difference and gap size between the tailgate body and the side wall of the vehicle body are measured with a measuring ruler. The position of the tailgate body is adjusted according to the surface difference and gap size so that the surface difference and gap size between the tailgate body and the side wall of the vehicle body meet the tolerance requirements. Then, the bolts between the tailgate body and the vehicle body are tightened so that the tailgate body is fixed to the vehicle body.

[0039] The mounting fixture for the tailgate assembly provided in this application embodiment is installed onto the tailgate body by the first mounting part 141, and the positioning part 13 corresponds to at least part of the second feature part. The position of the tailgate body is adjusted according to the surface difference and gap size so that the surface difference and gap size between the tailgate body, the mounting fixture and the vehicle side panel meet the tolerance requirements, thereby shortening the gap and surface difference between the tailgate exterior panel and the vehicle side panel.

[0040] Reference Figure 1 , Figure 5 In one possible implementation of this application, the first feature portion includes an outer contour plate of the tailgate body, which is part of the tailgate body. The tailgate body may include the tailgate and the outer contour plate, which may be arranged circumferentially around the tailgate. The second feature portion of the tailgate exterior panel has the same structural features as the first feature portion and also has the same structural features as the outer contour plate. It is understood that the second feature portion is the outer contour plate of the tailgate exterior panel. The positioning portion 13 has the same structural features as at least a portion of the outer contour plate. It is understood that the positioning portion 13 is an outer contour plate disposed on the mounting fixture. By using the positioning portion 13, which has the same structural features as the outer contour plate of the tailgate body, the mounting fixture is installed onto the tailgate body.

[0041] The outer contour plate can be arranged around the circumference of the tailgate, and the positioning part 13 can be arranged on the outer contour plate. That is, both the positioning part 13 and the outer contour plate are arranged close to the side of the vehicle body, which makes it convenient to measure the surface difference and gap between the positioning part 13 and the outer contour plate and the side of the vehicle body with a measuring ruler.

[0042] Reference Figure 1 , Figure 5 In one possible implementation of this application, the outer contour plate has multiple outer contour segments along the vertical direction, and the positioning part 13 has the same structural features as at least one of the outer contour segments, which can simplify the structure of the installation fixture, make the size of the installation fixture smaller, and facilitate the placement of the installation fixture.

[0043] Reference Figures 1-2 In one possible implementation of this application, two of the multiple outer contour segments are designated as a first outer contour segment and a second outer contour segment. The first and second outer contour segments can be connected or separated. Both the first and second outer contour segments are arc-shaped segments, with the first outer contour segment having the largest arc and the second outer contour segment having the smallest arc. The positioning part 13 has the same structural features as either the first or second outer contour segment.

[0044] The first outer contour segment and the second outer contour segment are designed as arc segments, and the positioning part 13 is also an arc segment, which can quickly and conveniently position the positioning part 13 on the first outer contour segment or the second outer contour segment.

[0045] Reference Figure 1 , Figure 5 In one possible implementation of this application, the installation fixture includes a first installation fixture 11 and a second installation fixture 12. Both the first installation fixture 11 and the second installation fixture 12 include a first installation part 141 and a positioning part 13. The positioning part 13 of the first installation fixture 11 has the same structural features as the first outer contour segment, and the positioning part 13 of the second installation fixture 12 has the same structural features as the second outer contour segment.

[0046] The first installation fixture 11 and the second installation fixture 12 are both installed on the outside of the tailgate body and are spaced apart along the vertical direction of the tailgate body. This allows the installation fixtures to better mimic the structural features of the tailgate exterior panel and improves the accuracy of the installation fixtures when installing the tailgate body.

[0047] Reference Figure 1 , Figure 5In one possible implementation of this application, there are two first mounting fixtures 11, which are spaced apart along the left and right directions of the back door body. The two first mounting fixtures 11 are respectively installed at the left and right ends of the back door body, mimicking the structural features of the back door exterior trim panel along the left and right directions, so as to better mimic the position of the back door exterior trim panel installed on the back door body.

[0048] There are two second mounting fixtures 12. The two second mounting fixtures 12 are spaced apart along the left and right directions of the tailgate body. The two second mounting fixtures 12 are respectively installed at the left and right ends of the tailgate body, imitating the structural features of the tailgate exterior panel along the left and right directions, so as to better imitate the position of the tailgate exterior panel installed on the tailgate body.

[0049] Reference Figures 1-8 In one possible implementation of this application, the installation fixture includes an installation plate 14 connected to the positioning part 13. The installation plate 14 has a first installation part 141 on the side facing the tailgate body, and a second installation part on the side facing the installation fixture. The second installation part is positioned and engaged with the first installation part 141. By positioning and engaging with the first installation part 141, the installation fixture can be installed onto the tailgate body. At the same time, the second installation part can also be a mounting point for installing the tailgate exterior trim panel onto the tailgate body.

[0050] By adjusting the position of the first mounting part 141 relative to the second mounting part, the relative position of the positioning part 13 and the back door body can be adjusted so that the surface difference and gap between the positioning part 13 and the back door body meet the requirements.

[0051] For example, the installation tool includes a contour block, the anti-contact block is the installation part, the installation plate 14 is connected to the side of the contour block near the center of the back door body, and an installation handle 145 is provided on the side of the installation plate 14 away from the back door body. The installation handle 145 makes it easy for the operator to hold the installation tool.

[0052] Reference Figures 1-8 In one possible implementation of this application, the first mounting part 141 includes a mounting block 142 and a fixing pin 144. The mounting block 142 is movably disposed on the mounting plate 14. The mounting block 142 has a first mounting surface 143 on the side facing the back door body. The second mounting part includes a second mounting surface and a mounting hole. The second mounting surface is positioned and engaged with the first mounting surface 143, and the mounting hole is positioned and engaged with the fixing pin 144.

[0053] The mounting hole and the fixing pin 144 are positioned and engaged, which can pre-position the position of the mounting fixture relative to the back door body. Then, the mounting block 142 moves toward the back door body so that the second mounting surface is close to the first mounting surface 143, and the mounting fixture is fixed to the back door body.

[0054] Reference Figures 1-8 In one possible implementation of this application, a fixing pin 144 is provided on the first mounting surface 143. The fixing pin 144 extends from the first mounting surface 143. When the first mounting surface 143 is close to the second mounting surface, the fixing pin 144 on the first mounting surface 143 can extend into the mounting hole. The fixing pin 144 and the mounting hole can play a first positioning role. The close proximity of the first mounting surface 143 and the second mounting surface can also play a second positioning role. Under the double positioning effect, the accuracy of the installation tooling can be improved when it is installed on the back door body.

[0055] In a specific example, the mounting fixture includes a first mounting fixture 11 and a second mounting fixture 12. Both the first mounting fixture 11 and the second mounting fixture 12 include a positioning part 13 and a mounting plate 14, and a connecting plate 146 connects the positioning part 13 and the mounting plate 14. The mounting plate 14 of the first mounting fixture 11 is provided with a first mounting part 141, and both the mounting plate 14 and the positioning part 13 of the second mounting fixture 12 are provided with a first mounting part 141. The first mounting part 141 includes a plurality of mounting blocks 142, and the plurality of mounting blocks 142 located in the second mounting fixture 12 are spaced apart in the vertical direction.

[0056] The first mounting fixture 11 and the second mounting fixture 12 each have three mounting blocks 142. Each mounting block 142 has a first mounting surface 143 on the side facing the back door body, and two of the first mounting surfaces 143 have fixing pins 144 on the side facing the back door body.

[0057] Reference Figure 2 , Figure 6 In one possible implementation of this application, there are multiple mounting blocks 142, and the shape formed by connecting the multiple mounting blocks 142 is a triangle. The triangular structure is more stable and makes it less likely for the second mounting surface to be displaced relative to the first mounting surface 143.

[0058] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments. The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made based on the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. An installation fixture for a rear door assembly, characterized in that, The tailgate assembly includes a tailgate body and a tailgate exterior trim panel. The tailgate body is mounted on the vehicle body, and the tailgate exterior trim panel is mounted on the outer side of the tailgate body. The mounting fixture is used to assist in the installation of the tailgate body. The rear door body has a first feature portion, the rear door outer trim panel has a second feature portion corresponding to the first feature portion, and the installation fixture includes: The first mounting part (141) and the positioning part (13) are movably mounted on the tailgate body. The positioning part (13) has the same structural features as at least part of the second feature part, so that when the tailgate body is installed, the assembly position of the tailgate body can be adjusted by the relative position between the positioning part (13) and the first feature part.

2. The installation fixture for the rear door assembly according to claim 1, characterized in that, The first feature includes the outer contour plate of the back door body, and the positioning part (13) has the same structural features as at least part of the outer contour plate.

3. The installation fixture for the rear door assembly according to claim 2, characterized in that, The outer contour plate has multiple outer contour segments along the vertical direction, and the positioning part (13) has the same structural features as at least one of the outer contour segments.

4. The installation fixture for the rear door assembly according to claim 3, characterized in that, Two of the multiple outer contour segments are the first outer contour segment and the second outer contour segment. Both the first outer contour segment and the second outer contour segment are arc segments. The first outer contour segment has the largest arc and the second outer contour segment has the smallest arc. The positioning part (13) has the same structural features as the first outer contour segment or the second outer contour segment.

5. The installation fixture for the rear door assembly according to claim 4, characterized in that, The installation fixture includes a first installation fixture (11) and a second installation fixture (12). Both the first installation fixture (11) and the second installation fixture (12) include a first installation part (141) and a positioning part (13). The positioning part (13) of the first installation fixture (11) has the same structural features as the first outer contour segment, and the positioning part (13) of the second installation fixture (12) has the same structural features as the second outer contour segment.

6. The installation fixture for the rear door assembly according to claim 5, characterized in that, Two first mounting fixtures (11) are provided, and the two first mounting fixtures (11) are spaced apart in the left and right direction of the back door body; and / or, two second mounting fixtures (12) are provided, and the two second mounting fixtures (12) are spaced apart in the left and right direction of the back door body.

7. The installation fixture for the rear door assembly according to claim 1, characterized in that, The installation fixture includes an installation plate (14), which is connected to the positioning part (13). The installation plate (14) has a first installation part (141) on the side facing the back door body, and a second installation part on the side facing the installation fixture. The second installation part is positioned and cooperates with the first installation part (141).

8. The installation fixture for the rear door assembly according to claim 7, characterized in that, The first mounting part (141) includes a mounting block (142) and a fixing pin (144). The mounting block (142) is movably disposed on the mounting plate (14). The mounting block (142) has a first mounting surface (143) on the side facing the back door body. The second mounting part includes a second mounting surface and a mounting hole. The second mounting surface is positioned and engaged with the first mounting surface (143). The mounting hole is positioned and engaged with the fixing pin (144).

9. The installation fixture for the rear door assembly according to claim 8, characterized in that, The first mounting surface (143) is provided with the fixing pin (144).

10. The installation fixture for the rear door assembly according to claim 8, characterized in that, The mounting block (142) is provided in multiple ways, and the shape formed by connecting the multiple mounting blocks (142) is a triangle.