Integral type heaven and earth double-opening tail door lock catch positioning and assembling tool and using method

Abstract

The invention relates to an integral heaven and earth double-opening tail door lock catch positioning and assembling tool and a using method, and the integral heaven and earth double-opening tail door lock catch positioning and assembling tool comprises a frame arranged at the tail of a vehicle; the vehicle body positioning mechanism comprises a main positioning assembly and an auxiliary positioning assembly which are fixedly arranged at the two ends of the frame, the main positioning assembly and the auxiliary positioning assembly are detachably installed on tail lamp base plates on the two sides of a vehicle body, the main positioning assembly positions the position of the end where the main positioning assembly is located in the X, Y and Z directions, and the auxiliary positioning assembly positions the position of the end where the auxiliary positioning assembly is located in the X and Z directions; the sky door lock catch positioning mechanism is rotatably arranged in the middle of the frame, is matched with the mounting position of a sky door lock catch on the ground door and positions the positions of the sky door lock catch in the X direction and the Y direction; the two ground door lock catch positioning mechanisms are symmetrically arranged on the two sides of the sky door lock catch positioning mechanism respectively and fixedly connected with the frame, and the ground door lock catch positioning mechanisms abut against the ground door and position the position of the ground door lock catch in the X direction. According to the invention, the sky door and the ground door can be locked and buckled on the same integral tool and the vehicle body reference system to be assembled and positioned.

Description

Technical Field

[0001] This application relates to the field of vehicle assembly, specifically to an integrated double-opening tailgate lock positioning assembly fixture and its usage method. Background Technology

[0002] The dual-opening tailgate design is primarily used in mid-to-large SUVs. Due to the overall height of the vehicle, a one-piece tailgate is quite long, making opening and closing it in confined spaces inconvenient. To address this issue, designers typically divide the tailgate into two parts: a top door and a bottom door, which open in opposite directions. In tight spaces, only the top door needs to be opened, reducing operating space and making tailgate opening simple and convenient. Compared to a one-piece tailgate, it also reduces the load on the roof and hinges, minimizing deformation and improving overall vehicle strength, durability, and reliability. However, the dual-opening tailgate structure is more complex, with more parts. The top and bottom doors have two sets of locks and latches, resulting in a complex matching relationship and posing challenges to improving the overall refinement of the rear end and ensuring compliance with surface differences.

[0003] In the existing technology, Option 1: After the top door latch and the two latches on both sides of the bottom door are assembled, the assembly line in the final assembly workshop loosens the bolts of the top door latch and the bottom door latch and then re-adjusts the gap difference around the top door and the bottom door according to the actual gap difference between the tailgate and the environmental components. Using this option, the operators on the final assembly line will adjust the position of the latches based on experience to match the gap difference around the top and bottom doors. Because there are no assembly fixtures for the top door latch and the bottom door latch, the assembly position is random. Therefore, workers need to go through a series of processes: adjusting the latches, confirming the gap difference around the door, adjusting again, and confirming again. This re-adjustment process is time-consuming, labor-intensive, and requires a high level of adjustment skill from the workers. Option 2: Use three separate small assembly fixtures to position and assemble one latch of the top door and two latches of the bottom door separately. Compared to the fixture-less assembly of Option 1, Option 2 can indeed reduce the re-adjustment of the latch position to a certain extent. However, because three separate small fixtures are used to assemble the top and bottom door latches, the operation steps are more cumbersome, and the fixture management is more inconvenient. The three independent small toolings use their own sub-bases and are not strongly related to the vehicle body, requiring repeated matching and adjustment. Summary of the Invention

[0004] This application provides an integrated double-opening tailgate latch positioning and assembly fixture and its usage method, which can assemble and position the top and bottom latches on the same integrated fixture and vehicle body reference system, shorten the dimensional chain links, improve the first-time assembly pass rate of gap surface difference, and reduce rework time.

[0005] In a first aspect, embodiments of this application provide an integrated double-opening tailgate latch positioning and assembly fixture. The integrated double-opening tailgate latch positioning and assembly fixture includes: a frame, disposed at the rear of the vehicle; a vehicle body positioning mechanism, comprising a main positioning component and a secondary positioning component fixed to both ends of the frame, both detachably mounted on taillight mounting plates on both sides of the vehicle body, the main positioning component being used to position its end in the X, Y, and Z directions, and the secondary positioning component being used to position its end in the X and Z directions; a tailgate latch positioning mechanism, rotatably disposed in the middle of the frame, cooperating with the tailgate latch mounting position on the bottom door, used to position the tailgate latch in the X and Y directions; and two bottom door latch positioning mechanisms, symmetrically disposed on both sides of the tailgate latch positioning mechanism and fixedly connected to the frame, the bottom door latch positioning mechanisms abutting against the bottom door, used to position the bottom door latch in the X direction; wherein, X is the vehicle length direction, Y is the vehicle width direction, and Z is the vehicle height direction.

[0006] In conjunction with the first aspect, in some embodiments, the frame includes a support rod arranged in the Y direction, with mounting brackets at both ends of the support rod, a mounting plate at the front end of the mounting bracket, and the main positioning component and the secondary positioning component both located on the front wall of the mounting plate.

[0007] In conjunction with the first aspect, in some embodiments, both the main positioning component and the secondary positioning component include: a clamp, which is mounted on the mounting plate, with the front end of the clamp clamping the taillight base plate; a positioning pin, which is inserted into a corresponding positioning hole in the taillight base plate; and a plurality of X-direction positioning blocks, which are fixedly mounted on the mounting plate, with the front end of the X-direction positioning blocks abutting against the taillight base plate to maintain the distance between the mounting bracket and the taillight base plate.

[0008] In conjunction with the first aspect, in some embodiments, the positioning pin of the main positioning component is the main positioning pin, which is inserted into the corresponding positioning hole and contacts the inner wall of the positioning hole; the positioning pin of the secondary positioning component is the secondary positioning pin, which is inserted into the corresponding positioning hole, and the secondary positioning pin leaves a gap with the inner wall of the positioning hole in the Y direction and contacts the inner wall of the positioning hole in the Z direction.

[0009] In conjunction with the first aspect, in some embodiments, the clamping device includes: a first support base mounted on the front wall of the mounting plate; a linkage mechanism mounted on the first support base, the linkage mechanism including two clamping arms for clamping the taillight base plate; a second support base mounted on the rear wall of the mounting plate, on which a first nut is mounted, the first nut being fitted with a first bolt; a first connecting rod passing through the mounting plate, the first connecting rod including a first main rod and a first secondary rod hinged to each other, the first main rod being axially rotatable relative to the first secondary rod, the first secondary rod being connected to the linkage mechanism, and the first main rod being fixedly connected to the first bolt; when the first bolt rotates relative to the first nut, it drives the first main rod and the first secondary rod to move back and forth, and drives the two clamping arms to close and open through the linkage mechanism.

[0010] In conjunction with the first aspect, in some embodiments, the two clamping arms of the linkage mechanism are arranged crosswise, and the intersection point is hinged by a hinge shaft, which is mounted on the first support base; a connecting arm is hinged to the rear end of each clamping arm, and the rear end of each connecting arm is hinged to the first auxiliary rod of the first connecting rod.

[0011] In conjunction with the first aspect, in some embodiments, the first bolt has a mounting hole, one end of the first main rod is inserted into the mounting hole, and the other end is rotatably sleeved on the end of the first auxiliary rod, and the nut of the first bolt is equipped with a rotating handle.

[0012] In conjunction with the first aspect, in some embodiments, the gate latch positioning mechanism includes: a third support base fixedly disposed in the middle of the support rod; a gate latch Y-direction positioning block hinged at its rear end to the third support base and having an installation groove at its front end; and a gate latch X-direction positioning block fixedly disposed in the installation groove and having a U-shaped groove extending vertically through its front end, the rear wall of which contacts the rear end of the gate latch.

[0013] In conjunction with the first aspect, in some embodiments, the ground door latch positioning mechanism includes: a fourth support base mounted on the support rod, the fourth support base having a second nut mounted thereon, and the second nut having a second bolt mounted thereon; a ground door latch X-direction positioning block passing through the front wall of the fourth support base, the rear of the ground door latch X-direction positioning block having a limiting block restricting the ground door latch X-direction positioning block from moving forward; a second connecting rod passing through the rear wall of the fourth support base, the second connecting rod including a second main rod and a second auxiliary rod hinged to each other, the second main rod being axially rotatable relative to the second auxiliary rod, the second auxiliary rod being connected to the ground door latch X-direction positioning block, and the second main rod being fixedly connected to the second bolt; when the second bolt rotates relative to the second nut, it drives the second main rod and the first auxiliary rod to move back and forth, thereby driving the ground door latch X-direction positioning block to move back and forth.

[0014] Secondly, embodiments of this application provide a method for using an integrated double-opening tailgate lock positioning assembly fixture. The method of use includes: pre-installing the ground door latch to the ground door latch installation position, flipping the ground door inward until the ground door lock on the ground door engages with the ground door latch; installing the secondary positioning component of the frame on the taillight base plate on one side of the vehicle body, and then installing the main positioning component of the frame on the taillight base plate on the other side of the vehicle body, and fixing the frame in the X, Y, and Z upward positions; flipping the ground door outward so that the ground door abuts against the ground door latch positioning mechanism, and using the ground door latch positioning mechanism to push the ground door inward to flip it, positioning the ground door latch in the X upward position; pre-installing the top door latch to the top door latch installation position, flipping the top door latch positioning mechanism inward to mate with the top door latch installation position, positioning the top door latch in the X and Y upward positions; fixing the positions of the ground door latch and the top door latch respectively; flipping the top door latch positioning mechanism outward, removing the vehicle body positioning mechanism, until the entire integrated double-opening tailgate latch positioning assembly fixture is removed.

[0015] The beneficial effects of the technical solutions provided in this application include: In this application, a frame is used as a base, which is set at the rear of the vehicle through a body positioning mechanism to form a stable reference. The main positioning component and the secondary positioning component of the body positioning mechanism are fixed to both ends of the frame, and both are detachably mounted on the taillight mounting plates on both sides of the vehicle body. Here, the main positioning component determines the X, Y, and Z directions, while the secondary positioning component determines the X and Z directions, thus associating the frame with the vehicle body reference. Under this reference, it is ensured that the relative position of the frame and the vehicle body is without deviation, providing a "zero-error reference" for the subsequent positioning of the top and bottom door locks.

[0016] By setting the main positioning component to position its end in the X, Y, and Z directions, the absolute spatial position of one end of the frame is ensured; by setting the secondary positioning component to position its end in the X and Z directions, the other end of the frame is allowed to float slightly in the Y direction to adapt to the vehicle body manufacturing tolerances and avoid tooling jamming or deformation caused by over-positioning.

[0017] By fixing the top door lock positioning mechanism in the middle of the frame and cooperating with the installation position of the top door lock on the bottom door, the top door lock is positioned in the X and Y directions (matching the key cooperation direction of the top door lock).

[0018] By symmetrically arranging two ground door latch positioning mechanisms on both sides of the top door latch positioning mechanism and fixing them to the frame, the ground door latch positioning mechanism abuts against the ground door and positions the ground door latch in the X direction (matching the main opening and closing direction of the ground door). In this application, the vehicle body positioning mechanism, the top door latch positioning mechanism, and the ground door latch positioning mechanism use the frame as a whole carrier. The vehicle body positioning mechanism fixes the frame to the taillight base plate of the vehicle body. A unified reference is established based on the taillight base plate (the inherent structure of the vehicle body). The ground door latch positioning mechanism first adjusts the position of the ground door in the X direction, and then positions the ground door latch in the X direction according to the matching principle between the ground door latch and the ground door (ground door lock). Since the ground door has a top door latch installation position, the top door latch positioning mechanism positions the top door latch in the X and Y directions, thereby achieving synchronous positioning of the top door latch and the ground door latch under the same reference. Meanwhile, this application simplifies the dimensional chain to body → tooling → latch, reducing errors in intermediate links, making the latch assembly position more precise, significantly improving the first-pass yield, reducing the frequency of rework at the final assembly adjustment station, and greatly reducing assembly costs. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall double-opening tailgate lock positioning and assembly fixture installed at the rear of the vehicle according to an embodiment of this application. Figure 2 This is a perspective view of the overall top and bottom double-opening tailgate lock positioning and assembly fixture according to an embodiment of this application; Figure 3 for Figure 2 The front view; Figure 4 for Figure 3 Installation diagram of the main positioning component; Figure 5 for Figure 3 Installation diagram of the middle and auxiliary positioning components; Figure 6 for Figure 4 or Figure 5 Schematic diagram of the clamping device; Figure 7 for Figure 1 A schematic diagram of the first embodiment of the Zhongtianmen lock positioning mechanism; Figure 8 for Figure 1 Schematic diagram of the second embodiment of the Zhongtianmen lock positioning mechanism; Figure 9 for Figure 1 A schematic diagram of the positioning mechanism of the Zhongdi door lock; Figure 10 for Figure 9 The right view; Figure 11 for Figure 10 Sectional view at point AA; Figure 12 This is a flowchart illustrating the usage method of the integrated top and bottom double-opening tailgate lock positioning assembly tool in the embodiments of this application.

[0021] In the picture: 1. Frame; 11. Support rod; 12. Mounting bracket; 13. Mounting plate; 2. Vehicle body positioning mechanism; 21. Main positioning assembly; 211. Clamping device; 2111. First support seat; 2112. Linkage mechanism; 21121. Clamping arm; 211211. Clamping block; 21122. Connecting arm; 2113. Second support seat; 2114. First nut; 2115. First bolt; 2116. First connecting rod; 21161. First main rod; 21162. First auxiliary rod; 2117. Rotating handle; 212. X-direction positioning block; 213. Main positioning pin; 214. First connecting block; 215. Second connecting block; 22. Secondary positioning assembly; 221. Secondary positioning pin; 3. Skygate lock positioning mechanism; 31. Third support base; 32. Skygate lock Y-direction positioning block; 321. Mounting slot; 33. Skygate lock X-direction positioning block; 331. U-shaped groove; 332. Limiting bead; 34. Third connecting block; 341. Receiving groove; 35. Y-direction adjusting stud; 36. Limiting handle; 4. Ground door lock positioning mechanism; 41. Fourth support base; 42. Ground door lock X-direction positioning block; 421. Limiting block; 43. Second connecting rod; 431. Second main rod; 432. Second auxiliary rod; 44. Second nut; 45. Second bolt; 46. X-direction guide post; 5. Body; 51. Taillight base plate; 6. Ground door. Detailed Implementation

[0022] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0023] This application provides an integrated double-opening tailgate latch positioning and assembly fixture and its usage method, which can assemble and position the top and bottom latches on the same integrated fixture and vehicle body reference system, shorten the dimensional chain links, improve the first-time assembly pass rate of gap surface difference, and reduce rework time.

[0024] In a first aspect, embodiments of this application provide an integrated double-opening tailgate lock positioning and assembly fixture.

[0025] like Figure 1 and Figure 2 As shown, in one embodiment, the integrated double-opening tailgate latch positioning assembly fixture includes a frame 1, a vehicle body positioning mechanism 2, a top door latch positioning mechanism 3, and a bottom door latch positioning mechanism 4. The vehicle body positioning mechanism 2, the top door latch positioning mechanism 3, and the bottom door latch positioning mechanism 4 are all detachably and fixedly mounted on the frame 1.

[0026] Specifically, such as Figure 3 As shown, frame 1 is fixedly mounted to the rear of the vehicle via body positioning mechanism 2. Body positioning mechanism 2 includes a main positioning component 21 and a secondary positioning component 22 fixed at both ends of frame 1. Both are detachably mounted on the taillight base plates 51 on both sides of the vehicle body 5. Specifically, the main positioning component 21 is detachably mounted on the taillight base plate 51 on one side of the vehicle body 5, and the secondary positioning component 22 is detachably mounted on the taillight base plate 51 on the other side of the vehicle body 5. The main positioning component 21 is used to position its end (the end of frame 1 where the main positioning component 21 is fixed) in the X, Y, and Z directions, and the secondary positioning component 22 is used to position its end (the end of frame 1 where the secondary positioning component 22 is fixed) in the X and Z directions.

[0027] like Figure 3 As shown, the top door latch positioning mechanism 3 is fixed in the middle of the frame 1 and cooperates with the top door latch installation position on the bottom door 6 to position the top door latch in the X and Y directions. When installing the top door latch, place the top door latch in the installation position, use the top door latch positioning mechanism 3 as the positioning reference, and adjust the position of the top door latch in the X and Y directions to achieve the positioning of the top door latch.

[0028] like Figure 3As shown, there are two ground door latch positioning mechanisms 4, symmetrically arranged on both sides of the top door latch positioning mechanism 3, and fixedly connected to the frame 1. The ground door latch positioning mechanism 4 abuts against the ground door 6 and is used to position the ground door latch in the X-axis direction. It should be noted that the ground door 6 is opened and closed by the ground door hinge (by releasing the ground door hinge, the ground door 6 flips from inside the vehicle to outside, gradually opening; by tightening the ground door hinge, the ground door 6 flips from outside the vehicle to inside, gradually closing). When installing the ground door latch, the ground door 6 should be in the closed state. Using the ground door latch positioning mechanism 4 as the positioning reference, by abutting the ground door 6 in the X-axis direction with the ground door latch positioning mechanism 4, the opening and closing degree of the ground door 6 can be adjusted to position the ground door 6 in the closed state, that is, the position of the ground door 6 in the X, Y, and Z directions. Next, adjust the position of the ground door latch in the X-direction (the ground door latch needs to be pre-installed in the ground door latch installation position before tooling installation) so that the ground door lock on ground door 6 cooperates with the ground door latch, ensuring that the ground door latch can lock the ground door lock in the X-direction, to prevent ground door 6 from flipping outwards and causing ground door 6 to not close properly.

[0029] In this embodiment, it should be further explained that the X direction is the vehicle length direction, the Y direction is the vehicle width direction, and the Z direction is the vehicle height direction. When installing the top door latch and the bottom door latch, the position of the bottom door 6 in the closed state is determined by the bottom door latch positioning mechanism 4, and then the position of the bottom door latch in the X direction is positioned. Since the top door latch is installed on the bottom door 6, it is not necessary to position the top door latch in the Z direction; the position of the top door latch in the X and Y directions can be determined by the top door latch positioning mechanism 3.

[0030] In this embodiment, frame 1 is used as a base, and it is set at the rear of the vehicle through vehicle positioning mechanism 2 to form a stable reference. The main positioning component 21 and the secondary positioning component 22 of vehicle positioning mechanism 2 are fixed to both ends of frame 1, and both can be detachably installed on the taillight base plates 51 on both sides of vehicle body 5. Here, the main positioning component 21 determines the X, Y, and Z positions, and the secondary positioning component 22 determines the X and Z positions, so that frame 1 is associated with the reference of vehicle body 5. Under this reference, it is ensured that the relative position of frame 1 and vehicle body 5 is without deviation, which also provides a "zero-error reference" for the subsequent positioning of the top and bottom door locks.

[0031] By setting the main positioning component 21 to position its end in the X, Y, and Z directions, the absolute spatial position of one end of the frame 1 is ensured; by setting the secondary positioning component 22 to position its end in the X and Z directions, the other end of the frame 1 is allowed to float slightly in the Y direction to adapt to the manufacturing tolerances of the body 5 and avoid the tooling (i.e., the integral double-opening tailgate lock positioning assembly tooling) from jamming or deformation caused by over-positioning.

[0032] By fixing the top door lock positioning mechanism 3 in the middle of the frame 1 and cooperating with the top door lock installation position on the bottom door 6, the top door lock is positioned in the X and Y directions (matching the key cooperation direction of the top door lock).

[0033] By symmetrically arranging two ground door latch positioning mechanisms 4 on both sides of the top door latch positioning mechanism 3 and fixing them to the frame 1, the ground door latch positioning mechanism 4 abuts against the ground door 6 and positions the ground door latch in the X direction (matching the main opening and closing direction of the ground door 6). In this embodiment, the vehicle body positioning mechanism 2, the top door latch positioning mechanism 3, and the ground door latch positioning mechanism 4 use the frame 1 as the whole carrier. The vehicle body positioning mechanism 2 fixes the frame 1 to the taillight base plate 51 of the vehicle body 5. A unified reference is established based on the taillight base plate 51 of the vehicle body 5 (the inherent structure of the vehicle body 5). The ground door latch positioning mechanism 4 first adjusts the position of the ground door 6 in the X direction. According to the matching principle of the ground door latch and the ground door lock on the ground door, the position of the ground door latch in the X direction is positioned. Since the ground door 6 has a top door latch installation position, the top door latch positioning mechanism 3 positions the top door latch in the X and Y directions, thereby achieving synchronous positioning of the top door latch and the ground door latch under the same reference. Meanwhile, this embodiment simplifies the dimensional chain to vehicle body 5 → tooling → latch, reducing errors in intermediate links, making the latch assembly position more accurate, significantly improving the first-pass yield rate, reducing the frequency of rework at the final assembly adjustment station, and greatly reducing assembly costs.

[0034] Furthermore, in one embodiment, such as Figure 3 As shown, the frame 1 includes a support rod 11 arranged in the Y direction. Mounting brackets 12 are provided at both ends of the support rod 11, and a mounting plate 13 is provided at the front end of the mounting brackets 12. The main positioning component 21 and the secondary positioning component 22 are both located on the front wall of the mounting plate 13. In this embodiment, the latch positioning of the double-opening tailgate needs to cover the wide area of ​​the rear of the vehicle (the top latch is centered, and the bottom latches are symmetrically distributed on both sides). Therefore, the support rod 11 arranged in the Y direction also needs to cover the wide area of ​​the rear of the vehicle. By providing mounting brackets 12 at both ends of the support rod 11, and a mounting plate 13 at the front end of the mounting brackets 12, with the main positioning component 21 and the secondary positioning component 22 both located on the front wall of the mounting plate 13, a stable connection between the tooling and the vehicle body 5 is ensured. The support rod 11 can directly match the spacing of the taillight base plates 51 on both sides of the vehicle body 5 (the taillight base plates 51 are usually symmetrically distributed along the Y direction), making the mounting bases (mounting brackets 12 and mounting plates 13) of the main positioning component 21 and the secondary positioning component 22 consistent with the distribution pattern of the vehicle body 5 reference.

[0035] Furthermore, in one embodiment, such as Figure 4 and Figure 5As shown, both the main positioning component 21 and the secondary positioning component 22 include: a clamp 211, which is mounted on the mounting plate 13, with its front end clamping the taillight base plate 51; a positioning pin, which is inserted into the corresponding positioning hole in the taillight base plate 51; and several X-axis positioning blocks 212, which are fixedly mounted on the mounting plate 13, with the front ends of the X-axis positioning blocks 212 abutting against the taillight base plate 51 to maintain the distance between the mounting bracket 12 and the taillight base plate 51. In this embodiment, the positioning pin directly achieves "hard positioning" by inserting into the positioning hole of the taillight base plate 51. Utilizing the clearance fit between the hole and the pin, the Y-axis (radial direction of the pin) and Z-axis (axial height of the pin) positions are precisely constrained, solving the problem of insufficient accuracy of simple surface contact positioning (which is prone to offset due to clearance). Figure 4 and Figure 5 As shown, the positioning pin and the mounting plate 13 can be connected by a connecting block. Specifically, the positioning pin is provided with a first connecting block 214, and the mounting plate 13 is provided with a second connecting block 215. The two connecting blocks are connected by bolts, and the positioning pin can be adjusted by using washers.

[0036] Several X-direction positioning blocks 212 are fixed to the mounting plate 13, with the front ends of the X-direction positioning blocks 212 abutting against the taillight base plate 51, maintaining the distance between the mounting bracket 12 and the taillight base plate 51 in the X direction (vehicle length direction). This helps control the matching accuracy of the top door lock and the bottom door lock in the X direction (such as the alignment of the top door and the bottom door 6). Figure 4 and Figure 5 As shown, the main positioning component 21 and the auxiliary positioning component 22 each have two X-axis positioning blocks 212, which are symmetrically arranged on the mounting plate 13 along the Z-axis. The X-axis positioning blocks 212 are fixedly connected to the mounting plate 13.

[0037] After the positioning pin and the X-direction positioning block 212 are "precisely aligned", the clamping device 211 uses mechanical clamping force (such as pneumatic or manual clamping) to rigidly fix the mounting plate 13 and the taillight base plate 51 to eliminate positioning gaps (such as the fit gap between the positioning pin and the positioning hole, and the micro gap between the X-direction positioning block 212 and the taillight base plate 51), effectively preventing the tooling from shifting during the locking assembly process (such as the reaction force of tightening the bolts).

[0038] Furthermore, in one embodiment, the positioning pin of the main positioning component 21 is the main positioning pin 213, which is inserted into the corresponding positioning hole and contacts the inner wall of the positioning hole; the positioning pin of the secondary positioning component 22 is the secondary positioning pin 221, which is inserted into the corresponding positioning hole. The secondary positioning pin 221 leaves a gap with the inner wall of the positioning hole in the Y direction and contacts the inner wall of the positioning hole in the Z direction. In this embodiment, the positioning pins of the active positioning component and the secondary positioning component 22 are designed differently. The positioning pin of the main positioning component 21 is the main positioning pin 213, which is inserted into the corresponding positioning hole and contacts the inner wall of the positioning hole. Through full contact with the positioning hole in the Y and Z directions, the translational degrees of freedom in the Y direction (vehicle width direction) and Z direction (vehicle height direction) are directly constrained. Combined with the constraint of the X direction (vehicle length direction) by the X direction positioning block 212, the main positioning end of the frame 1 (i.e., the end of the frame 1 with the main positioning component 21) is fully positioned in the X, Y, and Z directions, providing a stable reference origin for the entire tooling (such as the positioning reference on the side of the vehicle body 5).

[0039] The locating pin of the secondary locating component 22 is the secondary locating pin 221. When inserted into the corresponding locating hole, the secondary locating pin 221 leaves a gap with the inner wall of the locating hole in the Y direction and contacts the inner wall of the locating hole in the Z direction. The secondary locating pin 221 only needs to assist in constraining the Z-direction freedom, ensuring that the secondary locating end (the end of frame 1 with the secondary locating component 22) and the main locating end work together to ensure the horizontal consistency of the tooling in the Z direction. The Y-direction of the secondary locating end does not require constraint because the secondary locating component 22 does not need to locate the Y direction. In fact, if the secondary locating pin 221 also contacts its corresponding locating hole in the Y direction, it will form a "repetitive constraint" with the Y-direction constraint of the main locating pin 213, which would interfere with the consistency of the reference. At the same time, this is also to allow the secondary locating end to float slightly in the Y direction, adapting to the manufacturing tolerances of the vehicle body 5 and avoiding tooling jamming or deformation caused by over-positioning.

[0040] Furthermore, in one embodiment, such as Figure 6As shown, the clamping device 211 includes: a first support base 2111, mounted on the front wall of the mounting plate 13; a linkage mechanism 2112, which is mounted on the first support base 2111, and the linkage mechanism 2112 includes two clamping arms 21121 that clamp the taillight base plate 51; a second support base 2113, mounted on the rear wall of the mounting plate 13, on which a first nut 2114 is mounted, and a first bolt 2115 is mounted in conjunction with the first nut 2114; and a first connecting rod 2116, which passes through the mounting plate 13. It includes a first main rod 21161 and a first secondary rod 21162 that are hinged to each other, and the first main rod 21161 can rotate axially relative to the first secondary rod 21162. The first secondary rod 21162 is connected to the linkage mechanism 2112. The first main rod 21161 is fixedly connected to the first bolt 2115. When the first bolt rotates relative to the first nut 2114, it drives the first main rod 21161 and the first secondary rod 21162 to move back and forth, and drives the two clamping arms 21121 to close and open through the linkage mechanism 2112.

[0041] In this embodiment, the first support 2111 is installed on the front wall of the mounting plate 13, directly supporting the linkage mechanism 2112; the second support 2113 is installed on the rear wall of the mounting plate 13, forming an adjustment drive assembly through the first nut 2114 and the first bolt 2115. The two are linked by the first connecting rod 2116 passing through the mounting plate 13, forming a compact "front clamping-rear driving" layout, which greatly saves tooling space. The rotational movement of the first bolt 2115 relative to the first nut 2114 is directly converted into the forward and backward linear movement of the first connecting rod 2116 (pushing or pulling the linkage mechanism 2112). When the first bolt 2115 rotates, the first main rod 21161 rotates synchronously with it. Since the first main rod 21161 and the first auxiliary rod 21162 of the first connecting rod 2116 are hinged and rotate axially, the first auxiliary rod 21162 will not be driven to rotate, but will only move back and forth with the first main rod 21161, ensuring that the linkage mechanism 2112 is only subjected to axial thrust or tension, and not torsional force. The linkage mechanism 2112 symmetrically clamps the taillight base plate 51 through two clamping arms 21121. Utilizing the lever principle of the linkage mechanism 2112, the linear motion of the first connecting rod 2116 is converted into the opening and closing action of the clamping arms 21121, thereby achieving stable clamping of the taillight base plate 51. Through the above technical solution, the two clamping arms 21121 of the linkage mechanism 2112 are symmetrically distributed, and the force exerted on the taillight base plate 51 during clamping is balanced, avoiding deformation of the base plate caused by excessive local force; at the same time, the threaded engagement between the first bolt 2115 and the first nut 2114 has self-locking property, and can maintain a stable clamping force after clamping, preventing the tooling from loosening due to vibration during assembly, and providing a stable reference support for the body positioning mechanism 2 (main / sub-positioning components).

[0042] Furthermore, in one embodiment, such as Figure 6 As shown, the two clamping arms 21121 of the linkage mechanism 2112 are arranged crosswise, and the intersection point is hinged by a hinge shaft, which is mounted on the first support base 2111. Each clamping arm 21121 has a connecting arm 21122 hinged to its rear end, and the rear end of each connecting arm 21122 is hinged to the first auxiliary rod 21162 of the first connecting rod 2116. In this embodiment, the two clamping arms 21121 of the linkage mechanism 2112 are arranged crosswise, and the intersection point is fixed to the first support base 2111 by a hinge shaft. The intersection point is a fixed fulcrum, the front end of the clamping arm 21121 is the clamping end, and the rear end is the driving end, forming a symmetrical lever centered on the fixed fulcrum, similar to a "scissor" lever structure, ensuring that the movement of the two clamping arms 21121 is completely synchronized.

[0043] By hinged a connecting arm 21122 to the rear end of each clamping arm 21121, and the rear end of each connecting arm 21122 is hinged to the first auxiliary rod 21162 of the first connecting rod 2116, when the first auxiliary rod 21162 of the first connecting rod 2116 moves back and forth, the rear end of the clamping arm 21121 is driven by the two connecting arms 21122 respectively (first auxiliary rod 21162 → connecting arm 21122 → rear end of clamping arm 21121). Because the clamping arms 21121 are hinged around the intersection point, the force on the rear end is converted into the opening and closing motion of the front end (when the rear end moves closer, the front end closes; when the rear end moves away, the front end opens), which greatly improves the conversion efficiency.

[0044] In other embodiments, such as Figure 6 As shown, the front end of the clamping arm 21121 is the clamping end, and the clamping ends of the two clamping arms 21121 are provided with clamping blocks 211211 facing each other, forming a wraparound contact with the taillight base plate 51. When the clamping arms 21121 are closed, the two clamping blocks 211211 approach and fit against the surface of the base plate from both sides simultaneously. The clamping blocks 211211 contact the base plate through their contours, rather than directly contacting the clamping arms 21121, which can effectively improve the fit, enhance the clamping stability, and prevent slippage. The shape of the clamping blocks 211211 can be customized according to the shape of the contact surface of the taillight base plate 51 (such as a flat surface, a curved surface, or a ribbed structure), and its material can be a wear-resistant, elastic, or non-slip material (such as rubber, nylon, polyurethane, etc.).

[0045] Furthermore, in one embodiment, such as Figure 6As shown, the first bolt 2115 has a mounting hole, one end of the first main rod 21161 is inserted into the mounting hole, and the other end is rotatably fitted onto the end of the first auxiliary rod 21162. The nut of the first bolt 2115 is fitted with a rotating handle 2117. In this embodiment, the first bolt 2115 and one end of the first main rod 21161 are connected by an interference fit or a key. When the first bolt 2115 rotates, it will drive the first main rod 21161 to rotate synchronously. At the same time, when the first bolt 2115 moves axially relative to the first nut 2114 (the first nut 2114 on the second support 2113), the first main rod 21161 will also synchronously generate a back-and-forth linear displacement with the first bolt 2115. The other end of the first main rod 21161 is rotatably sleeved on the end of the first secondary rod 21162. The two can be connected via a clearance-fit shaft-hole structure or a bearing. This way, the rotational motion of the first main rod 21161 will not be transmitted to the first secondary rod 21162. The first secondary rod 21162 will only receive the axial thrust or tension of the first main rod 21161 and will not rotate itself. The first secondary rod 21162 only outputs linear motion to drive the linkage mechanism 2112, avoiding mechanism jamming caused by additional torque generated by the linkage mechanism 2112.

[0046] By installing a rotating handle 2117 on the nut of the first bolt 2115, the first bolt 2115 can be rotated manually, providing a force-saving lever. At the same time, increasing the length of the rotating handle 2117 can also reduce the force required for manual operation.

[0047] Furthermore, in one embodiment, such as Figure 7 and Figure 8As shown, the Tianmen lock positioning mechanism 3 includes: a third support base 31, which is fixed in the middle of the support rod 11; a Tianmen lock Y-direction positioning block 32, the rear end of which is hinged to the third support base 31, and the front end of which has an installation groove 321; and a Tianmen lock X-direction positioning block 33, which is fixed in the installation groove 321, and the front end of which has a through-hole U-shaped groove 331, the rear wall of which contacts the rear end of the Tianmen lock. In this embodiment, the third support base 31 serves as the "reference platform" of the entire Tianmen lock positioning mechanism 3. It is fixed in the middle of the support rod 11, and the rigid connection between the two provides a stable spatial reference for the subsequent positioning of the Tianmen lock in the X and Y directions, avoiding positioning errors caused by support swaying. The rear end of the Y-direction positioning block 32 of the sky gate lock is hinged to the third support base 31 (the two are hinged using a hinge shaft), which allows the Y-direction positioning block 32 of the sky gate lock to flip up and down, facilitating the removal of the sky gate lock positioning mechanism 3 from the sky gate lock after installation. The X-direction positioning block 33 of the sky gate lock is fixed in the mounting groove 321, with a vertically penetrating U-shaped groove 331 at its front end. The rear wall of the U-shaped groove 331 contacts the rear end of the sky gate lock, directly restricting the displacement of the sky gate lock in the X direction. The vertically penetrating U-shaped groove 331 provides an "open channel" for the flipping of the Y-direction positioning block 32 of the sky gate lock, allowing the Y-direction positioning block 32 of the sky gate lock to be quickly removed.

[0048] In other embodiments, such as Figure 7 and Figure 8 As shown, the Y-direction positioning block 32 of the sky gate lock and the third support base 31 can be connected by a third connecting block 34. The third connecting block 34 and the third support base 31 can be hinged by a hinge shaft. The Y-direction positioning block 32 of the sky gate lock and the third connecting block 34 can be fixedly connected by bolts.

[0049] In other embodiments, such as Figure 7 and Figure 8 As shown, the third connecting block 34 is provided with a receiving groove 341 for accommodating the Y-direction positioning block 32 of the gantry lock. The Y-direction positioning block 32 of the gantry lock is fixed in the receiving groove 341 by bolts. Y-direction adjusting studs 35 are symmetrically provided on both sides of the receiving groove 341 for adjusting the fixed position of the Y-direction positioning block 32 of the gantry lock in the receiving groove 341. The side wall of the third connecting block 34 is also provided with a limiting handle 36. The limiting handle 36 is engaged with the third connecting block 34 and the Y-direction positioning block 32 of the gantry lock by a pin-hole engagement, which limits the Y-direction positioning block 32 of the gantry lock.

[0050] In other embodiments, such as Figure 7As shown, a marking line is provided on one side of the mounting groove 321 on the Y-axis positioning block 32 of the gantry lock that accommodates the X-axis positioning block 33 of the gantry lock, and a scale line corresponding to the marking line is provided on the X-axis positioning block 33 of the gantry lock. When installing the X-axis positioning block 33 of the gantry lock, the position of the X-axis positioning block 33 of the gantry lock in the X-axis direction is determined by aligning the scale line with the marking line.

[0051] In other embodiments, such as Figure 8 As shown, two channels are symmetrically opened on the two opposite inner walls of the U-shaped groove 331. Limiting beads 332 are telescopically installed in the channels. When the gantry lock is installed, the gantry lock can move unidirectionally in the X direction to prevent the gantry lock from coming out forward.

[0052] Furthermore, in one embodiment, such as Figures 9-11 As shown, the ground door lock positioning mechanism 4 includes: a fourth support base 41, which is mounted on the support rod 11, and a second nut 44 is mounted on the fourth support base 41, and a second bolt 45 is mounted on the second nut 44; a ground door lock X-direction positioning block 42, which passes through the front wall of the fourth support base 41, and a limiting block 421 is provided at the rear of the ground door lock X-direction positioning block 42 to restrict the ground door lock X-direction positioning block 42 from moving forward; a second connecting rod 43, which passes through the rear wall of the fourth support base 41, and the second connecting rod 43 includes a second main rod 431 and a second auxiliary rod 432 that are hinged to each other. The second main rod 431 can rotate axially relative to the second auxiliary rod 432. The second auxiliary rod 432 is connected to the ground door lock X-direction positioning block 42, and the second main rod 431 is fixedly connected to the second bolt 45; when the second bolt 45 rotates relative to the second nut 44, it drives the second main rod 431 and the first auxiliary rod 21162 to move back and forth, and drives the ground door lock X-direction positioning block 42 to move back and forth. In this embodiment, the fourth support base 41 is installed on the support rod 11, forming the reference carrier of the entire ground door latch positioning mechanism 4. By installing the second nut 44 on the fourth support base 41, and the second bolt 45 on the second nut 44, the second nut 44 and the second bolt 45 form a helical pair, converting the rotational motion of the second bolt 45 into linear motion along the axial direction (when the second bolt 45 rotates relative to the second nut 44, the second bolt 45 will move back and forth along the axial direction because the second nut 44 is fixed). The second main rod 431 is fixedly connected to the second bolt 45. The second main rod 431 can rotate and move axially synchronously with the second bolt 45. The second auxiliary rod 432 is connected to the ground door latch X-direction positioning block 42. Only axial movement is required, without rotation. The hinge between the second main rod 431 and the second auxiliary rod 432, which allows axial rotation, can eliminate the interference of the rotation of the second bolt 45 on the ground door latch X-direction positioning block 42, while providing adjustment power for the back and forth movement of the ground door latch X-direction positioning block 42. When the second bolt 45 rotates relative to the second nut 44, it drives the second main rod 431 and the first auxiliary rod 21162 to move back and forth, which in turn drives the X-direction positioning block 42 of the ground door lock to move back and forth.

[0053] When the ground door lock is installed, the second bolt 45 and the second nut rotate in the forward direction. The second bolt 45 drives the first main rod 21161 to rotate and move forward. The first main rod 21161 drives the first auxiliary rod 21162 to move forward. The first auxiliary rod 21162 drives the X-direction positioning block 42 of the ground door lock to move forward, abutting against the ground door 6 and pushing the ground door 6 to flip into the vehicle until the limiting block 421 of the X-direction positioning block 42 of the ground door lock abuts against the inner side of the front wall of the fourth support seat 41.

[0054] In other embodiments, an X-direction guide post 46 is provided on the inner side of the front wall of the fourth support base 41. The X-direction guide post 46 is inserted into the limiting block 421 to ensure the stability of the movement of the X-direction positioning block 42 of the door lock.

[0055] In some other embodiments, the limiting block 421 and the X-direction positioning block 42 of the ground door latch can be an integral structure. The core function of the limiting block is to prevent the X-direction positioning block 42 of the ground door latch from disengaging forward from the fourth support base 41, while the X-direction positioning block 42 of the ground door latch needs to directly abut against the ground door 6 to achieve X-direction positioning. Both need to withstand the abutment force and movement stress during the tooling operation. The integral structure avoids the weak connection points (such as weld cracking and bolt loosening) that may exist in the split structure (such as welding and bolt connection), and has stronger overall rigidity. It can more stably withstand the force during the positioning process, reduce the limiting failure or positioning deviation caused by structural deformation, and ensure the reliability of the X-direction positioning of the ground door latch.

[0056] In other embodiments, the side of the ground door latch X-direction positioning block 42 that abuts against the ground door is provided with a magnet, which is used to magnetically hold the ground door and limit and retain the ground door in the X direction.

[0057] Secondly, this application provides a method for using an integrated top and bottom double-opening tailgate latch positioning assembly fixture based on any of the above embodiments. For example... Figure 12 As shown, in one embodiment, the method of use includes: Step S10: Pre-install the ground door lock latch to the ground door lock latch installation position, and flip the ground door 6 inside the vehicle until the ground door lock on the ground door 6 engages with the ground door lock latch.

[0058] In this embodiment, before using the integrated double-opening tailgate latch positioning assembly fixture (hereinafter referred to as the "fixture"), the bottom door hinge of the vehicle body 5 has been installed and can drive the bottom door 6 to rotate inwards / outwards. At this time, the bottom door latch is pre-installed in the bottom door latch installation position. This is to avoid the inability to install the bottom door latch into the installation position after the fixture is installed. The bottom door latch in this state can be finely adjusted to reserve adjustment space for subsequent cooperation with the top door latch. Subsequently, the bottom door hinge is used to drive the bottom door 6 to rotate inwards until the bottom door lock on the bottom door 6 engages with the bottom door latch. This is only a trial installation of the bottom door latch. At this time, the bottom door latch is not in a fixed state, providing an initial placement basis for subsequent positioning and avoiding positioning deviation caused by parts being suspended.

[0059] Step S20: Install the secondary positioning component 22 of the frame 1 on the taillight base plate 51 on one side of the vehicle body 5, and then install the main positioning component 21 of the frame 1 on the taillight base plate 51 on the other side of the vehicle body 5, and fix the frame 1 in the X, Y, Z direction.

[0060] In this embodiment, the secondary positioning component 22 of frame 1 is installed on the taillight base plate 51 on one side of the vehicle body 5, and the main positioning component 21 of frame 1 is installed on the taillight base plate 51 on the other side of the vehicle body 5, finally fixing frame 1 in the X, Y, and Z directions. The overall reference of the tooling is established through the taillight base plates 51 on both sides of the vehicle body 5. This is because after the vehicle body 5 is welded, the positional accuracy of the taillight base plates 51 in the X, Y, and Z directions is usually high (this is a key assembly reference). Fixing frame 1 here avoids positioning deviations caused by the integrated double-opening tailgate latch positioning assembly tooling itself due to "suspended installation" or "reliance on non-reference parts." If the tooling is fixed to the body body 5 cover, the frame 1 may shift due to deformation of the cover.

[0061] Step S30: Flip the ground door 6 outwards so that it abuts against the ground door latch positioning mechanism 4. The ground door latch positioning mechanism 4 pushes the ground door 6 inwards to flip it, positioning the ground door latch in the X-direction position.

[0062] In this embodiment, positioning the ground door 6 latch in the X-direction requires the ground door latch positioning mechanism 4 to push the ground door 6 inward and rotate it. In previous embodiments, the step of rotating the ground door 6 inward using the ground door hinge resulted in a large gap between the ground door 6 and the ground door latch positioning mechanism 4, which might have prevented the ground door latch positioning mechanism 4 from holding the ground door 6. Therefore, it is necessary to use the ground door hinge again to push the ground door 6 outward and rotate it so that the ground door 6 holds the ground door latch positioning mechanism 4. Finally, the ground door latch positioning mechanism 4 pushes the ground door 6 inward and rotates it until it reaches the designed position. At this point, the position of the ground door 6 latch in the X-direction is adjusted so that it engages with the ground door lock on the ground door 6, thereby achieving the positioning of the ground door 6 latch in the X-direction. The operation is simple and the positioning is accurate. In addition, the ground door latch in this state can still be fine-tuned, reserving adjustment space for subsequent cooperation with the top door latch.

[0063] Step S40: Pre-install the gantry lock buckle into the gantry lock buckle installation position, flip the gantry lock buckle positioning mechanism 3 inside the vehicle to cooperate with the gantry lock buckle installation position, and position the gantry lock buckle in the X and Y directions upward; In this embodiment, the top door latch is pre-installed in the installation position, and the top door latch positioning mechanism 3 is flipped inward to mate with the installation position, that is, the top door latch positioning mechanism 3 is placed horizontally on the installation position. Since the position of the bottom door 6 has been determined in the previous embodiment, and the top door latch is installed on the bottom door 6, it is not necessary to position the top door latch in the Z direction. It is only necessary to adjust the position of the top door latch in the X and Y directions by using the top door latch positioning mechanism 3 to achieve the purpose of positioning the top door latch in the X and Y directions.

[0064] Step S50: Fix the positions of the ground door latch and the top door latch respectively.

[0065] Step S60: Flip the tailgate lock positioning mechanism 3 outwards, remove the vehicle body positioning mechanism 2, and continue until the entire integrated double-opening tailgate lock positioning assembly fixture is removed.

[0066] In this embodiment, the relative positions of the ground door latch and the top door latch have been defined by the integrated double-opening tailgate latch positioning and assembly fixture, allowing for simultaneous inspection of their fit. After confirming that the pre-installed positions are correct, the bolts of the ground door latch and the top door latch can be tightened separately to fix their positions. This avoids premature tightening that could lead to irreparable positional deviations.

[0067] Finally, flip the top door positioning mechanism outwards to avoid the already installed top door latch, remove the body positioning mechanism 2, and continue until the entire fixture is removed to complete the assembly. By using the integrated double-opening tailgate latch positioning assembly fixture of the embodiment to position and install the bottom door latch and the top door latch, the top door and bottom door latches can be assembled and positioned on the same integrated fixture and body 5 reference system, shortening the dimensional chain links, improving the first-time assembly pass rate of gap surface difference, and reducing rework time.

[0068] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0069] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, 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 limitations, 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 said element.

[0070] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A one-piece double-opening tailgate lock positioning assembly fixture, characterized in that, include: Frame (1), located at the rear of the vehicle; The vehicle body positioning mechanism (2) includes a main positioning component (21) and a secondary positioning component (22) fixed at both ends of the frame (1). Both are detachably mounted on the taillight base plates (51) on both sides of the vehicle body (5). The main positioning component (21) is used to position its end in the X, Y, and Z directions, and the secondary positioning component (22) is used to position its end in the X and Z directions. The top door lock positioning mechanism (3) is rotatably disposed in the middle of the frame (1) and cooperates with the top door lock installation position on the bottom door (6) to position the top door lock in the X and Y directions; There are two ground door latch positioning mechanisms (4), which are symmetrically arranged on both sides of the top door latch positioning mechanism (3) and fixedly connected to the frame (1). The ground door latch positioning mechanism (4) abuts against the ground door (6) and is used to position the ground door (6) latch in the X direction. Where X is the vehicle length direction, Y is the vehicle width direction, and Z is the vehicle height direction.

2. The integral double-opening tailgate lock positioning assembly fixture as described in claim 1, characterized in that, The frame (1) includes a support rod (11) arranged in the Y direction. The two ends of the support rod (11) are respectively provided with mounting brackets (12). The front end of the mounting bracket (12) is provided with a mounting plate (13). The main positioning component (21) and the secondary positioning component (22) are both located on the front wall of the mounting plate (13).

3. The integral double-opening tailgate lock positioning assembly fixture as described in claim 2, characterized in that, Both the primary positioning component (21) and the secondary positioning component (22) include: A clamp (211) is mounted on the mounting plate (13), and the front end of the clamp (211) is clamped to the taillight base plate (51). A positioning pin is inserted into the corresponding positioning hole of the taillight base plate (51); Several X-direction positioning blocks (212) are fixedly installed on the mounting plate (13), and the front end of the X-direction positioning block (212) abuts against the taillight base plate (51) to maintain the distance between the mounting bracket (12) and the taillight base plate (51).

4. The integrated double-opening tailgate lock positioning assembly fixture as described in claim 3, characterized in that, The positioning pin of the main positioning component (21) is the main positioning pin (213), which is inserted into the corresponding positioning hole and contacts the inner wall of the positioning hole. The positioning pin of the sub-positioning component (22) is a sub-positioning pin (221), which is inserted into the corresponding positioning hole. The sub-positioning pin (221) has a gap with the inner wall of the positioning hole in the Y direction and contacts the inner wall of the positioning hole in the Z direction.

5. The integrated double-opening tailgate lock positioning assembly fixture as described in claim 3, characterized in that, The clamp (211) includes: The first support base (2111) is installed on the front wall of the mounting plate (13); The linkage mechanism (2112) is mounted on the first support base (2111). The linkage mechanism (2112) includes two clamping arms (21121) that clamp the taillight base plate (51). The second support (2113) is installed on the rear wall of the mounting plate (13), and a first nut (2114) is installed thereon. The first nut (2114) is fitted with a first bolt (2115). The first connecting rod (2116) passes through the mounting plate (13). The first connecting rod (2116) includes a first main rod (21161) and a first secondary rod (21162) that are hinged to each other. The first main rod (21161) can rotate axially relative to the first secondary rod (21162). The first secondary rod (21162) is connected to the linkage mechanism (2112). The first main rod (21161) is fixedly connected to the first bolt (2115). When the first bolt (2115) rotates relative to the first nut (2114), it drives the first main rod (21161) and the first auxiliary rod (21162) to move back and forth, and drives the two clamping arms (21121) to close and open through the linkage mechanism (2112).

6. The integral double-opening tailgate lock positioning assembly fixture as described in claim 5, characterized in that, The two clamping arms (21121) of the linkage mechanism (2112) are arranged crosswise, and the intersection point is hinged by a hinge shaft, which is mounted on the first support base (2111). Each clamping arm (21121) is hinged to a connecting arm (21122) at its rear end, and the rear end of each connecting arm (21122) is hinged to the first auxiliary rod (21162) of the first connecting rod (2116).

7. The integral double-opening tailgate lock positioning assembly fixture as described in claim 5, characterized in that, The first bolt (2115) has a mounting hole, one end of the first main rod (21161) is inserted into the mounting hole, and the other end is rotatably sleeved on the end of the first auxiliary rod (21162). The nut of the first bolt (2115) is equipped with a rotating handle (2117).

8. The integral double-opening tailgate lock positioning assembly fixture as described in claim 2, characterized in that, The Tianmen lock positioning mechanism (3) includes: The third support (31) is fixed to the middle of the support rod (11); The Tianmen lock Y-direction positioning block (32) has its rear end hinged to the third support base (31) and its front end has an installation groove (321). The Tianmen lock buckle X-direction positioning block (33) is fixed in the mounting groove (321), and a U-shaped groove (331) that runs vertically through the front end is provided. The rear wall of the U-shaped groove (331) contacts the rear end of the Tianmen lock buckle.

9. The integral double-opening tailgate lock positioning assembly fixture as described in claim 2, characterized in that, The ground door lock positioning mechanism (4) includes: A fourth support base (41) is mounted on the support rod (11), and a second nut (44) is mounted on the fourth support base (41), and a second bolt (45) is mounted on the second nut (44). The ground door latch X-direction positioning block (42) passes through the front wall of the fourth support base (41), and the rear part of the ground door latch X-direction positioning block (42) is provided with a limiting block (421) to restrict the ground door latch X-direction positioning block (42) from moving forward. The second connecting rod (43) passes through the rear wall of the fourth support base (41). The second connecting rod (43) includes a second main rod (431) and a second auxiliary rod (432) that are hinged to each other. The second main rod (431) can rotate axially relative to the second auxiliary rod (432). The second auxiliary rod (432) is connected to the X-direction positioning block (42) of the ground door latch. The second main rod (431) is fixedly connected to the second bolt (45). When the second bolt (45) rotates relative to the second nut (44), it drives the second main rod (431) and the first auxiliary rod (21162) to move back and forth, which in turn drives the X-direction positioning block (42) of the ground door lock to move back and forth.

10. A method of using the integrated double-opening tailgate lock positioning assembly fixture according to any one of claims 1-9, characterized in that, The usage method includes: Pre-install the ground door latch to the ground door latch installation position, flip the ground door (6) inside the vehicle until the ground door lock on the ground door (6) engages with the ground door latch; Install the secondary positioning component (22) of the frame (1) on the taillight base plate (51) on one side of the vehicle body (5), and then install the main positioning component (21) of the frame (1) on the taillight base plate (51) on the other side of the vehicle body (5), and fix the frame (1) in the X, Y, Z direction. Flip the ground door (6) outward so that the ground door (6) abuts against the ground door latch positioning mechanism (4), and push the ground door (6) inward through the ground door latch positioning mechanism (4) to position the ground door latch in the X direction; Pre-install the Tianmen lock buckle to the Tianmen lock buckle installation position, flip the Tianmen lock buckle positioning mechanism (3) inside the vehicle to cooperate with the Tianmen lock buckle installation position, and position the Tianmen lock buckle in the X and Y directions upward; Fix the positions of the ground door latch and the top door latch respectively; Flip the tailgate lock positioning mechanism (3) outwards, remove the body positioning mechanism (2), and then remove the entire integrated double-opening tailgate lock positioning assembly tool.

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