Method and tool for installing and adjusting rear tail door

Abstract

The invention belongs to the technical field of rear tail door installation, and discloses a rear tail door installation adjusting method and tool. The method comprises the following steps that S1, a rear tail door hinge is installed on a rear tail door; s2, the rear tail door adjusting assistive device is installed on the vehicle body, and a Z-direction adjusting piece on the rear tail door adjusting assistive device is adjusted to the specified height; s3, the rear tail door is connected with the automobile body through a rear tail door hinge, and the gap and the segment difference between the rear tail door and the side wall of the automobile body are adjusted under supporting of the Z-direction adjusting piece; and S4, locking the rear tail door hinge. The tool comprises a rear tail door hinge mounting clamp and a rear tail door adjusting auxiliary tool, wherein the rear tail door hinge mounting clamp can break the form and location tolerance of a rear tail door hinge and the form and location tolerance of the outer contour of the rear tail door; the rear tail door adjusting assistive device can support the rear tail door and is used for adjusting the position of the rear tail door in the X direction, the Y direction and the Z direction under the whole vehicle coordinate system. The quality of the whole vehicle can be improved, the adjusting difficulty can be effectively reduced, the working time is shortened, and the cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of rear tailgate installation, and in particular to a rear tailgate installation and adjustment method and tooling. Background Art

[0002] During the commissioning phase of a new vehicle, the gap and step difference between the exterior cover and the vehicle body has always been a challenge that is difficult to avoid. This is not only a technical issue, but also a comprehensive problem, because it is affected by many factors, including the accuracy of the side panels, the accuracy of the rear tailgate assembly, the accuracy of the hinge installation, and the adjustment status of the rear tailgate. Only by accurately controlling these influencing factors can the accuracy and stability of the gap and step difference be ensured, thereby improving the quality of the entire vehicle.

[0003] Nowadays, the adjustment method for the gap and step difference between the tailgate and the body still lacks systematicity. How to quickly and accurately realize the installation adjustment of the tailgate and the body and precisely control the gap and step difference accuracy between the tailgate and the body has become an urgent problem that major automobile manufacturers need to solve. Summary of the invention

[0004] An object of the present invention is to provide a method for installing and adjusting a tailgate, which aims to not only quickly realize the installation and adjustment of the tailgate through precise operation and control of the product structure, but also accurately ensure the gap and step difference accuracy between the tailgate assembly and the vehicle body.

[0005] To achieve this purpose, the present invention adopts the following technical scheme: a rear tailgate installation and adjustment method, comprising the following steps: S1: installing a rear tailgate hinge on the rear tailgate; S2: installing a rear tailgate adjustment aid on the vehicle body, and adjusting the Z-axis adjustment member on the rear tailgate adjustment aid to a specified height; S3: connecting the rear tailgate to the vehicle body through the rear tailgate hinge, and adjusting the gap and step difference between the rear tailgate and the side wall of the vehicle body under the support of the Z-axis adjustment member; S4: locking the rear tailgate hinge.

[0006] Preferably, in step S1, a mounting square hole is provided on the tailgate hinge, a threaded hole is provided on the tailgate, a fixing bolt passes through the mounting square hole and is threadedly connected with the threaded hole, and a single-side through-hole amount between the mounting square hole and the fixing bolt is ≥2.5 mm.

[0007] Preferably, in step S1, the rear tailgate hinge is installed on the rear tailgate using a rear tailgate hinge installation fixture.

[0008] Preferably, step S1 includes: S11: positioning the outer contour of the tailgate on the installation platform by means of a clamp; S12: positioning the tailgate hinge to the hinge installation position of the tailgate by means of a tailgate hinge installation clamp; S13: fixing the tailgate hinge to the tailgate by means of fixing bolts.

[0009] Preferably, in step S3, adjusting the gap and step difference between the rear tailgate and the side wall of the vehicle body includes: adjusting the step difference in the X direction between the rear part of the rear tailgate and the side wall, adjusting the gap in the Y direction between the rear tailgate and the side wall of the vehicle body, and adjusting the gap in the X direction and the step difference in the Z direction between the front part of the rear tailgate and the front part of the side wall;

[0010] The X direction is the length direction of the vehicle body, the Y direction is the width direction of the vehicle body, the Z direction is the vertical direction, and the X direction, Y direction, and Z direction are perpendicular to each other.

[0011] Another object of the present invention is to provide a rear tailgate installation and adjustment tool for implementing the above-mentioned rear tailgate installation and adjustment method.

[0012] To achieve this object, the present invention adopts the following technical solutions:

[0013] A rear tailgate installation and adjustment tool is used to implement the above-mentioned rear tailgate installation and adjustment method, and the rear tailgate installation and adjustment tool includes: a rear tailgate hinge installation fixture, including a hinge clamping assembly and a hinge positioning assembly, the hinge clamping assembly is used to clamp one end of the rear tailgate hinge connected to the vehicle body; the hinge positioning assembly is used to position the rear tailgate hinge to the rear tailgate installation position; a rear tailgate adjustment auxiliary tool includes a first adjustment assembly, the first adjustment assembly includes a positioning plate and a support plate, the positioning plate is connected to the support plate, the positioning plate is used to be fixedly connected to the vehicle body, the support plate includes a Z-direction adjustment member, the Z-direction adjustment member is used to support the rear part of the rear tailgate and the Z-direction adjustment member is adjustable along the Z direction relative to the support plate; wherein, the X direction is the length direction of the vehicle body, the Y direction is the width direction of the vehicle body, the Z direction is the vertical direction, and the X direction, the Y direction, and the Z direction are perpendicular to each other.

[0014] Preferably, positioning pieces capable of engaging with the vehicle body are provided at both ends of the positioning plate, and positioning pins are provided on the positioning pieces, and the positioning pins are used to cooperate with locking rings on the vehicle body.

[0015] Preferably, two Z-direction adjusting members are provided and are respectively arranged at two ends of the support plate.

[0016] Preferably, the hinge positioning assembly comprises: a first positioning member, used for pressing the rear tailgate hinge to the connection of the rear tailgate; and a second positioning member, used for cooperating with the first positioning member to clamp the rear tailgate hinge along the Y direction.

[0017] Preferably, the rear tailgate adjustment aid further includes a second adjustment component, which can be symmetrically mounted on the vehicle body and located on both sides of the rear tailgate in the Y direction, for supporting the positions of both sides of the rear tailgate in the Y direction.

[0018] Beneficial effects of the present invention:

[0019] The rear tailgate installation and adjustment method provided by the present invention first installs the rear tailgate hinge on the rear tailgate; then installs the rear tailgate adjustment aid to the vehicle body, and adjusts the Z-adjustment part on the rear tailgate adjustment aid to a specified height; then connects the rear tailgate to the vehicle body through the rear tailgate hinge, and adjusts the gap and step difference between the rear tailgate and the side of the vehicle body under the support of the Z-adjustment part; finally, locks the rear tailgate hinge. The above steps standardize the adjustment method for the gap and step difference between the rear tailgate and the vehicle body, which can improve the quality of the whole vehicle, accurately ensure the gap and step difference accuracy between the rear tailgate assembly and the vehicle body, and can also effectively reduce the difficulty of adjustment, reduce working hours, and reduce costs.

[0020] The rear tailgate installation and adjustment tool provided by the present invention comprises a rear tailgate hinge installation fixture and a rear tailgate adjustment auxiliary tool. The rear tailgate hinge installation fixture is used to connect the rear tailgate hinge and the rear tailgate installation to interrupt the shape and position tolerance of the rear tailgate hinge itself and the shape and position tolerance of the outer contour of the rear tailgate; the rear tailgate adjustment auxiliary tool can support the rear tailgate and is used to adjust the position of the rear tailgate along the X direction, Y direction and Z direction under the coordinate system of the whole vehicle. The rear tailgate installation and adjustment tool of the present invention has a simple structure and is easy to use. The installation and adjustment of the rear tailgate can be realized without a large-scale closing and tightening tool. While reducing the assembly and production costs of the automobile, the installation accuracy of the rear tailgate is also improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a flow chart of a method for installing and adjusting a rear tailgate according to an embodiment of the present invention;

[0022] Figure 2 yes Figure 1 Flow chart of step S1 in FIG.

[0023] Figure 3 yes Figure 2 Flow chart of step S12;

[0024] Figure 4 yes Figure 1 Flow chart of step S3;

[0025] Figure 5 is a structural schematic diagram of a first adjustment component in an embodiment of the present invention;

[0026] Figure 6 The present invention Figure 5 Another perspective of

[0027] Figure 7 is a schematic diagram of a rear tailgate hinge mounting platform according to an embodiment of the present invention;

[0028] Figure 8 The present invention Figure 7 A partial enlarged view of point I in the middle;

[0029] Fig. 9 is a schematic structural diagram of a rear tailgate hinge in an embodiment of the present invention;

[0030] Fig.10 The present invention Fig. 9 Another perspective of

[0031] Fig.11 is a schematic diagram of assembling a hinge clamping assembly and a rear tailgate hinge in an embodiment of the present invention;

[0032] Fig.12 The present invention Fig.11 Another perspective of

[0033] Fig.13 is a schematic diagram of assembling the first positioning member and the second positioning member with the rear tailgate hinge in an embodiment of the present invention;

[0034] Fig.14 The present invention Fig.13 A partial enlarged view of position II in the middle;

[0035] Fig.15 It is a structural schematic diagram of the second adjustment component of the present invention.

[0036] In the figure:

[0037] 1. Tailgate;

[0038] 2. Rear tailgate hinge; 21. Installation square hole;

[0039] 31. first adjustment assembly; 311. positioning plate; 3111. positioning member; 31111. positioning pin; 312. connecting plate; 313. supporting plate; 3131. Z-direction adjustment member; 3132. supporting member; 32. second adjustment assembly; 321. main body; 322. hooking member;

[0040] 4. Tailgate hinge installation fixture; 41. Hinge clamping assembly; 411. First driving member; 412. Clamping portion; 413. Second driving member; 414. Lifting platform; 4141. Lifting plate; 4142. Lifting block; 42. First positioning member; 43. Second positioning member. DETAILED DESCRIPTION

[0041] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0042] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral 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. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0044] In the description of this embodiment, the terms "upper", "lower", "right", etc., directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0045] During the automobile manufacturing process, the rear tailgate assembly needs to be installed with the vehicle body. The rear tailgate assembly includes the rear tailgate 1 and the rear tailgate hinge 2. The rear tailgate 1 is assembled with the vehicle body through the rear tailgate hinge 2, and the two ends of the rear tailgate hinge 2 are connected to the rear tailgate 1 and the vehicle body respectively. During installation, although some tooling is developed to ensure the dimensional accuracy of the rear tailgate 1 assembly, due to the large number of dimensional matching relationships in the rear tailgate 1 area and the complex dimensional chain, fine adjustments are often required during assembly to ensure the accuracy of the rear tailgate 1 assembly. Fine adjustments are generally made with reference to the gap and step size between the rear tailgate 1 and the side of the vehicle body and other appearance matching surfaces.

[0046] In order to finely operate and control the product structure, quickly install and adjust the rear tailgate 1, and accurately ensure the gap and step accuracy between the rear tailgate assembly and the vehicle body, the present invention discloses a rear tailgate installation and adjustment method, such as Figure 1 As shown, the following steps are included:

[0047] S1: Install the rear tailgate hinge 2 onto the rear tailgate 1;

[0048] In the above step S1, if Fig. 9 and Fig.10 As shown, a mounting square hole 21 is provided on the rear tailgate hinge 2, and a threaded hole is provided on the rear tailgate 1. The fixing bolt passes through the mounting square hole 21 and is threadedly connected with the threaded hole. The single-side through-hole amount between the mounting square hole 21 on the rear tailgate hinge 2 and the fixing bolt is ≥2.5mm, that is, the shortest distance between each side of the mounting square hole 21 and the fixing bolt is greater than or equal to 2.5mm. It can be understood that the structural design of the whole vehicle needs to ensure that the structure is adjustable in the X, Y and Z directions. Therefore, when designing the rear tailgate hinge 2, in the coordinate system of the whole vehicle, the rear tailgate hinge 2 is connected to the rear tailgate 1 through fixing bolts, and the reserved assembly margin is set to ensure that it is adjustable along the four sides of the mounting square hole 21, that is, in two directions. For example, the design adjustment amount of a certain vehicle model is 3mm, and the single-side through-hole amount between the mounting square hole 21 on the rear tailgate hinge 2 and the fixing bolt can be set to 2.5mm-3mm. Therefore, after the rear tailgate hinge 2 is installed on the rear tailgate, the adjustment amount along the two directions of the installation square hole 21 is still reserved, so as to adjust the position of the rear tailgate 1 relative to the side of the vehicle body when the rear tailgate 1 is subsequently installed on the vehicle body. During the adjustment process, the rear tailgate can be adjusted to the standard position by knocking or the like, without loosening the fixing bolts. Among them, the X direction is the length direction of the vehicle body, the Y direction is the width direction of the vehicle body, and the Z direction is the vertical direction, and the X direction, the Y direction, and the Z direction are perpendicular to each other.

[0049] like Figure 2 As shown, the above step S1 includes:

[0050] S11: positioning the outer contour of the rear tailgate 1 on the mounting platform by means of a fixture;

[0051] S12: positioning the rear tailgate hinge 2 to the hinge installation position of the rear tailgate 1 by means of the rear tailgate hinge installation fixture 4;

[0052] S13: Fix the rear tailgate hinge 2 to the rear tailgate 1 using the fixing bolts.

[0053] It is understandable that in the above steps S11-S13, the rear tailgate hinge 2 is installed on the rear tailgate 1 by using the rear tailgate hinge installation fixture 4. During installation, the rear tailgate 1 is first positioned on the installation platform by using a fixture, etc., and then the rear tailgate hinge 2 is positioned by using the rear tailgate hinge installation fixture 4, and then the rear tailgate hinge 2 is installed on the rear tailgate 1 by using the fixing bolts. By clamping and positioning the position of the rear tailgate hinge 2 with the help of the rear tailgate hinge installation fixture 4, it is not necessary to rely solely on the outer contour positioning, but directly and accurately control the single-side through-hole amount of the rear tailgate hinge 2 installation square hole, interrupting the hinge's own dimensional tolerance and the rear tailgate 1 outer contour shape and position tolerance, and can achieve accurate installation of the rear tailgate hinge 2 and the rear tailgate 1, thereby breaking the dimensional chain transmission and eliminating the tolerance transmission phenomenon.

[0054] Further, such as Figure 3 As shown, the above step S12 includes:

[0055] S121: clamping the current free end of the rear tailgate hinge 2 (the end not connected to the rear tailgate 1) by the rear tailgate hinge installation fixture 4;

[0056] S122: Clamp the current installation end (the end connected to the rear tailgate 1 ) of the rear tailgate hinge 2 by the rear tailgate hinge installation fixture 4 and position the end at the installation position of the rear tailgate 1 .

[0057] It can be understood that by first fixing the end of the tailgate hinge 2 that is not connected to the tailgate 1 and then positioning the end of the tailgate hinge 2 that is connected to the tailgate 1, repeated debugging caused by displacement of the tailgate hinge 2 during positioning can be effectively avoided, and the positioning and installation of the tailgate hinge 2 can be completed efficiently.

[0058] S2: Install the rear tailgate adjustment tool to the vehicle body, and adjust the Z-direction adjustment member 3131 on the rear tailgate adjustment tool to a specified height;

[0059] S3: Connect the rear tailgate 1 to the vehicle body through the rear tailgate hinge 2, and adjust the gap and step difference between the rear tailgate 1 and the side wall of the vehicle body with the support of the Z-direction adjusting member 3131;

[0060] Further, such as Figure 4 As shown, step S3 includes:

[0061] S31: adjusting the X-direction step difference between the rear portion of the rear tailgate 1 and the side panel;

[0062] S32: adjusting the Y-direction clearance between the rear tailgate 1 and the side wall of the vehicle body;

[0063] S33: adjusting the X-direction gap and Z-direction step difference between the front part of the rear tailgate 1 and the front part of the side panel;

[0064] Among them, the X direction is the length direction of the vehicle body, the Y direction is the width direction of the vehicle body, and the Z direction is the vertical direction. The X direction, Y direction, and Z direction are perpendicular to each other; the part of the rear tailgate 1 close to the origin of the vehicle coordinate system is the front part, that is, the end close to the front of the vehicle is the front part, and the part away from the origin of the vehicle coordinate system is the rear part, that is, the end away from the front of the vehicle is the rear part. The selection of the vehicle coordinate system is adaptive. In this embodiment, the center position of the vehicle chassis is selected as the origin of the vehicle coordinate system. Of course, in other embodiments, other suitable parts can be selected as the origin of the vehicle coordinate system according to different needs, and no specific restrictions are made here. Through actual operation verification, this order can quickly complete the adjustment and reduce the adjustment time. Combined with the rear tailgate adjustment auxiliary tool, it can be adjusted in a standardized and fast manner.

[0065] S4: Lock the rear tailgate hinge 2.

[0066] The advantages of the rear tailgate installation and adjustment method provided by the present invention are as follows: the rear tailgate adjustment aid is used to complete the installation and adjustment of the rear tailgate 1 and the vehicle body, which can accurately simulate the situation in which the rear tailgate 1 cooperates with the vehicle body at a specified height, which is convenient for operators to observe and measure, and under the support of the Z-direction adjustment member 3131 on the rear tailgate adjustment aid, the gap and step difference between the rear tailgate 1 and the side wall of the vehicle body are adjusted, which can effectively save manpower, and is convenient for operators to observe and measure whether the gap and step difference between the rear tailgate 1 and the side wall of the vehicle body meet the requirements, and the installation and adjustment of the tailgate 1 and the vehicle body can be completed more efficiently.

[0067] The present invention also provides a rear tailgate installation and adjustment tool, which is used to implement the above rear tailgate installation and adjustment method. The rear tailgate installation and adjustment tool includes: a rear tailgate hinge installation fixture 4 and a rear tailgate adjustment auxiliary tool, wherein the rear tailgate hinge installation fixture 4 is used to connect the rear tailgate hinge 2 and install it with the rear tailgate 1 to interrupt the shape and position tolerance of the rear tailgate hinge 2 itself and the shape and position tolerance of the outer contour of the rear tailgate 1; the rear tailgate adjustment auxiliary tool can support the rear tailgate 1 and is used to adjust the position of the rear tailgate 1 along the X direction, Y direction, and Z direction of the whole vehicle coordinate system; wherein the X direction is the length direction of the vehicle body, the Y direction is the width direction of the vehicle body, and the Z direction is the vertical direction, and the X direction, Y direction, and Z direction are perpendicular to each other.

[0068] In some embodiments, the tailgate adjustment aid includes a first adjustment component 31, such as Figure 5 and Figure 6As shown, the first adjustment component 31 includes a positioning plate 311, a connecting plate 312 and a support plate 313. The shape of the positioning plate 311 is adapted to the vehicle body and is used to be fixedly connected to the vehicle body. The support plate 313 is used to support the rear part of the tailgate 1. The positioning plate 311 and the support plate 313 are fixedly connected via the connecting plate 312. In some specific embodiments, positioning pieces 3111 that can engage with the shape of the vehicle body are provided at both ends of the positioning plate 311, and positioning pins 31111 are provided on the positioning pieces 3111, and the positioning pins 31111 are used to cooperate with the locking rings on the vehicle body; Z-direction adjustment pieces 3131 are provided at both ends of the support plate 313, and the position of the rear tailgate 1 is supported and adjusted by the Z-direction adjustment pieces 3131 at both ends; the support plate 313 also includes support pieces 3132, which are spaced apart on the side of the support plate 313 close to the vehicle body, and are used to abut against the vehicle body so that the position of the rear tailgate adjustment aid relative to the vehicle body is more stable. Optionally, a buffer layer is provided on the side of the support piece 3132 abutting against the vehicle body. The buffer layer is made of a flexible material, such as rubber, which can prevent the rear tailgate adjustment aid from causing impact or friction on the vehicle body structure during the adjustment process to cause damage. In other embodiments, the support piece 3132 itself can be set as a rubber piece. It is understandable that when adjusting the rear tailgate 1, the rear tailgate adjustment aid can be used to simulate the lock position of the rear tailgate 1 for support. The adjustment is more in line with the support state of the actual vehicle, which is conducive to ensuring that the left and right heights of the rear tailgate 1 are consistent after adjustment, avoiding the rear tailgate 1 from tilting, and effectively ensuring that the Z-direction height of the rear tailgate 1 is consistent on both sides.

[0069] In some embodiments, Figure 7 and Figure 8 As shown, the rear tailgate hinge installation fixture 4 includes a hinge clamping assembly 41 and a hinge positioning assembly; the hinge positioning assembly includes a first positioning member 42 and a second positioning member 43, the first positioning member 42 is used to press the rear tailgate hinge 2 to the connection point of the rear tailgate 1; the second positioning member 43 is used to cooperate with the first positioning member 42 to clamp the rear tailgate hinge 2 along the Y direction.

[0070] In some specific embodiments, Fig.11 and Fig.12As shown, the hinge clamping assembly 41 is used to clamp one end of the rear tailgate hinge 2 connected to the vehicle body, and the hinge clamping assembly 41 includes a base fixedly connected to the operating platform, a first driving member 411 is provided on one side of the base, and a clamping portion 412 is provided at the output end of the first driving member 411, and a second driving member 413 is provided on the other side of the base, and a lifting platform 414 is provided at the output end of the second driving member 413, and the lifting platform 414 is used to place and cooperate with the clamping portion 412 to clamp and fix one end of the rear tailgate hinge 2 connected to the vehicle body; it can be understood that the first driving member 411 can drive the clamping portion 412 to move in a lifting or rotating manner, and the first driving member 411 can be any one of a cylinder, an electric telescopic rod, a motor, a hydraulic cylinder, etc. The connection between the first driving member 411 and the clamping portion 412 is conventional technology in the field and will not be repeated here. The second driving member 413 can drive the lifting platform 414 to rise and fall and cooperate with the clamping part 412 to clamp or position the rear tailgate hinge 2. The lifting platform 414 is adapted to the end shape of the rear tailgate hinge 2. In some embodiments, the lifting platform 414 is composed of a lifting plate 4141 and a plurality of lifting blocks 4142 arranged on the lifting plate 4141. The lifting plate 4141 is fixedly arranged on the output end of the second driving member 413. The plurality of lifting blocks 4142 form a shape adapted to the end of the rear tailgate hinge 2 and are detachably arranged on the lifting plate 4141. Such an arrangement can quickly design and adapt hinges of different models and types, reducing R&D and production costs; the second driving member 413 can be any one of a cylinder, an electric telescopic rod, a motor, a hydraulic cylinder, etc. The connection between the second driving member 413 and the clamping part 412 is conventional technology in the field and will not be repeated here. The first positioning member 42 is located on one side of the rear tailgate hinge 2 installation position, and the second positioning member 43 is located on the other side of the rear tailgate hinge 2 installation position. The structures of the first positioning member 42 and the second positioning member 43 are similar to those of the hinge clamping assembly 41, and both include a base, a driving member, and a clamping portion. The difference is that the clamping portions of the three have made structural adaptive adjustments according to different clamping positions, and the first positioning member 42 and the second positioning member 43 have only one set of driving systems. Fig.13 and Fig.14 As shown, the first positioning member 42 and the second positioning member 43 of the hinge positioning assembly cooperate with each other to clamp and position the end of the rear tailgate hinge 2 connected to the rear tailgate 1 at the installation position of the rear tailgate 1 to prevent the rear tailgate hinge 2 from moving during installation. After clamping and positioning by the rear tailgate hinge installation fixture 4, it is installed without relying solely on the outer contour positioning. Instead, the installation position dimensions of the rear tailgate hinge 2 and the rear tailgate are directly and accurately controlled, which can interrupt the tolerance of the rear tailgate hinge 2 itself and the outer contour shape and position tolerance of the rear tailgate hinge 2 and the rear tailgate 1, so as to interrupt the dimension chain and avoid tolerance transmission.

[0071] In some embodiments, Figure 7As shown, the first positioning member 42 and the second positioning member 43 of the hinge positioning assembly, together with the hinge clamping assembly 41, form a group of tailgate hinge mounting fixtures 4. Two groups of tailgate hinge mounting fixtures 4 are arranged on the operating platform, and the two groups of tailgate hinge mounting fixtures 4 are symmetrically arranged on both sides of the tailgate 1 along the Y direction. In this way, the tailgate hinges 2 on both sides of the tailgate 1 can be installed at the same time, thereby improving work efficiency.

[0072] In some embodiments, the process of installing the rear tailgate hinge 2 to the rear tailgate 1 is as follows:

[0073] The rear tailgate 1 is positioned on the mounting platform by means of a fixture or the like, and the hinge is positioned by means of the rear tailgate hinge mounting fixture 4; wherein, first, the hinge clamping assembly 41 clamps one end of the rear tailgate hinge 2, the lifting platform 414 rises upward, and the clamping portion 412 is pressed downward against and fixed to the end of the rear tailgate hinge 2 to prevent the hinge from moving; then, the clamping portion 412 of the first positioning member 42 moves downward, pressing the other end of the rear tailgate hinge 2 onto the rear tailgate 1 along the Z direction, and at the same time, the second positioning member 42 moves downward, pressing the other end of the rear tailgate hinge 2 onto the rear tailgate 1 along the Z direction, and at the same time, The clamping portion 412 of the component 43 cooperates with the first positioning component 42 to clamp the rear tailgate hinge 2 along the Y direction to prevent the installation square hole 21 from moving when the rear tailgate hinge 2 is nailed (when installing the fixing bolts); finally, after the two ends of the rear tailgate hinge 2 are clamped, the nailing operation of the rear tailgate hinge 2 and the rear tailgate 1 is carried out; after the nailing is completed, the hinge clamping assembly 41, the first positioning component 42 and the second positioning component 43 are all reset, and after resetting, the rear tailgate 1 with the installed rear tailgate hinge 2 is taken out, and the installation process of the rear tailgate hinge 2 is completed.

[0074] It is understandable that in the above process, the clamping portion 412 of the second positioning member 43 may press the rear tailgate hinge 2 downward along the Z direction, and the clamping portion 412 of the first positioning member 42 cooperates with the second positioning member 43 to clamp the rear tailgate hinge 2 along the Y direction.

[0075] In some embodiments, Fig.15As shown, the rear tailgate adjustment aid also includes a second adjustment component 32, which is symmetrically arranged on the vehicle body and located on both sides of the rear tailgate 1 in the Y direction, and is used to support and assist in adjusting the position of the rear tailgate 1 along the Y direction. The second adjustment component 32 includes a body portion 321 and a hook portion 322, the body portion 321 is fixed to the vehicle body and detachably connected, the body portion 321 is a block structure, and can be adaptively designed according to parameters such as the installation position of the body portion 321 and the vehicle body, and the shape of the rear tailgate 1; the hook portion 322 is arranged on the side of the body portion 321 away from the vehicle body, and is detachably connected to the body portion 321. The hook portion 322 includes a plurality of hooks for supporting the rear tailgate 1 at different positions, so that the rear tailgate 1 is supported by the hook portion 322 of the second adjustment component 32 when installed on the vehicle body, achieving the effect of preliminary positioning, and then adjusting according to the above-mentioned rear tailgate installation and adjustment method; it can be understood that after the rear tailgate 1 is installed and adjusted, the rear tailgate installation and adjustment tooling is completely removed, which greatly improves the convenience and work efficiency of adjustment compared to the existing technology that relies entirely on manual operation. The rear tailgate installation and adjustment method provided by the present invention first installs the rear tailgate hinge on the rear tailgate; then installs the rear tailgate adjustment aid to the vehicle body, and adjusts the Z-direction adjustment member on the rear tailgate adjustment aid to a specified height; then connects the rear tailgate to the vehicle body through the rear tailgate hinge, and adjusts the gap and step difference between the rear tailgate and the side of the vehicle body under the support of the Z-direction adjustment member; finally, locks the rear tailgate hinge. The above steps standardize the adjustment method for the gap and step difference between the rear tailgate and the vehicle body, which can improve the quality of the whole vehicle, accurately ensure the gap and step difference accuracy between the rear tailgate assembly and the vehicle body, and can also effectively reduce the difficulty of adjustment, reduce working hours, and reduce costs. The rear tailgate installation and adjustment tool provided by the present invention includes a rear tailgate hinge installation fixture and a rear tailgate adjustment auxiliary tool. The rear tailgate hinge installation fixture is used to connect the rear tailgate hinge and the rear tailgate installation to interrupt the shape and position tolerance of the rear tailgate hinge itself and the shape and position tolerance of the outer contour of the rear tailgate; the rear tailgate adjustment auxiliary tool can support the rear tailgate and is used to adjust the position of the rear tailgate along the X, Y, and Z directions of the vehicle coordinate system. The rear tailgate installation and adjustment tool of the present invention has a simple structure and is easy to use. It can realize the installation and adjustment of the rear tailgate without a large-scale closing and tightening tool. While reducing the assembly and production costs of the automobile, it also improves the installation accuracy of the rear tailgate.

[0076] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. The rear tailgate installation and adjustment method is characterized by: The following steps are involved: S1: Install the rear tailgate hinge (2) onto the rear tailgate (1); S2: Install the rear tailgate adjustment tool to the vehicle body, and adjust the Z-direction adjustment member (3131) on the rear tailgate adjustment tool to a specified height; S3: connecting the rear tailgate (1) to the vehicle body via the rear tailgate hinge (2), and adjusting the gap and step difference between the rear tailgate (1) and the side wall of the vehicle body under the support of the Z-direction adjusting member (3131); S4: Lock the rear tailgate hinge (2).

2. The method for installing and adjusting the rear tailgate according to claim 1, characterized in that: In step S1, a mounting square hole (21) is provided on the rear tailgate hinge (2), a threaded hole is provided on the rear tailgate (1), a fixing bolt passes through the mounting square hole (21) and is threadedly connected to the threaded hole, and the single-side through-hole amount between the mounting square hole (21) and the fixing bolt is ≥2.5 mm.

3. The method for installing and adjusting the rear tailgate according to claim 1, characterized in that: In step S1, the rear tailgate hinge (2) is installed on the rear tailgate (1) using a rear tailgate hinge installation fixture (4).

4. The method for installing and adjusting a rear tailgate according to claim 1, characterized in that: Step S1 includes: S11: positioning the outer contour of the rear tailgate (1) on the mounting platform using a fixture; S12: positioning the rear tailgate hinge (2) to the hinge installation position of the rear tailgate (1) using the rear tailgate hinge installation fixture (4); S13: Secure the tailgate hinge (2) to the tailgate (1) using the fixing bolts.

5. The method for installing and adjusting a rear tailgate according to claim 1, characterized in that: In step S3, adjusting the gap and step difference between the rear tailgate (1) and the side wall of the vehicle body comprises: Adjusting the X-direction step difference between the rear part of the rear tailgate (1) and the side wall, the Y-direction gap between the rear tailgate (1) and the side wall of the vehicle body, and the X-direction gap and Z-direction step difference between the front part of the rear tailgate (1) and the front part of the side wall; The X direction is the length direction of the vehicle body, the Y direction is the width direction of the vehicle body, the Z direction is the vertical direction, and the X direction, Y direction, and Z direction are perpendicular to each other.

6. The rear tailgate installation and adjustment tooling is characterized by: Used to implement the rear tailgate installation and adjustment method according to any one of claims 1 to 5, the rear tailgate installation and adjustment tooling comprises: A rear tailgate hinge installation fixture (4), comprising a hinge clamping assembly (41) and a hinge positioning assembly, wherein the hinge clamping assembly (41) is used to clamp one end of the rear tailgate hinge (2) connected to the vehicle body; and the hinge positioning assembly is used to position the rear tailgate hinge (2) to a rear tailgate installation position; A rear tailgate adjustment aid comprises a first adjustment component (31), wherein the first adjustment component (31) comprises a positioning plate (311) and a support plate (313), wherein the positioning plate (311) is connected to the support plate (313), wherein the positioning plate (311) is used for being fixedly connected to a vehicle body, and wherein the support plate (313) comprises a Z-direction adjustment member (3131), wherein the Z-direction adjustment member (3131) is used for supporting the rear portion of the rear tailgate (1) and wherein the Z-direction adjustment member (3131) is adjustable relative to the support plate (313) along the Z direction; The X direction is the length direction of the vehicle body, the Y direction is the width direction of the vehicle body, the Z direction is the vertical direction, and the X direction, Y direction, and Z direction are perpendicular to each other.

7. The rear tailgate installation and adjustment tool according to claim 6, characterized in that: Positioning pieces (3111) capable of engaging with the vehicle body are provided at both ends of the positioning plate (311), and a positioning pin (31111) is provided on the positioning piece (3111), and the positioning pin (31111) is used to cooperate with a locking ring on the vehicle body.

8. The rear tailgate installation and adjustment tool according to claim 6, characterized in that: Two Z-direction adjustment members (3131) are provided and are respectively arranged at two ends of the support plate (313).

9. The rear tailgate installation and adjustment tool according to claim 6, characterized in that: The hinge positioning assembly comprises: A first positioning member (42) is used to press the rear tailgate hinge (2) to the connection point of the rear tailgate (1); The second positioning member (43) is used to cooperate with the first positioning member (42) to clamp the rear tailgate hinge (2) along the Y direction.

10. The rear tailgate installation and adjustment tool according to claim 6, characterized in that: The rear tailgate adjustment aid further comprises a second adjustment component (32), which can be symmetrically mounted on the vehicle body and located on both sides of the rear tailgate (1) in the Y direction, and is used to support the positions of both sides of the rear tailgate (1) in the Y direction.

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