Assembly structure of tail door system of new energy automobile
By designing an adjustable fixture and assembly base structure, the problem of multiple fixture switching and non-coplanar design of the inner and outer plates of the car tailgate assembly line is solved, and the fine adjustment and efficient assembly of the tailgate are achieved, which improves production efficiency and assembly accuracy.
Patent Information
- Application Number
- CN202510877863.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-27
- Publication Date
- 2025-08-15
AI Technical Summary
The existing car tailgate assembly line requires two sets of independent fixtures, which leads to the production of a single tailgate that requires multiple fixture switching. The non-coplanar design of the inner and outer panels of the tailgate makes it impossible to maintain the parts on both sides at the same time, and requires manual secondary positioning, making it difficult to achieve multi-faceted operations in one clamping.
Design an assembly structure including a fixed frame, a beam structure and an assembly base. The beam structure is installed through the movable seat and an adjustable placement angle is set to achieve fine adjustment and stable placement of the tailgate, and adapt to tailgate assembly of different sizes and inclinations.
The tailgate is adjustable and adaptable, and the inner and outer sides of the tailgate can be placed upward at one time, which facilitates the assembly of inner and outer accessories, improves production efficiency, reduces the number of fixture switching times, and ensures assembly accuracy.
Smart Images

Figure CN120480863A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the field of automobile parts processing equipment, and in particular to an assembly structure of a tailgate system of a new energy vehicle. Background Art
[0002] During the assembly of a car tailgate (typical structure: inner panel + outer panel + hinge assembly), components such as electronic locks, wiring harnesses, and cameras must be installed on both the inside and outside. This results in a high number of parts per side. Furthermore, the tailgate's unique double-panel bending structure, forming the top and side panels, creates a 110-130° angle. This creates two key challenges for existing assembly lines:
[0003] 1. To meet the assembly requirements of the inner side (dampers, wiring harness clips) and the outer side (cameras, lighting groups), the production line needs to be equipped with two independent fixtures, namely the inner support fixture and the outer suction fixture. The production of a single tailgate requires 3-4 fixture switching, which is time-consuming.
[0004] 2. The inner and outer panels of the tailgate are not coplanar and have an angle. Traditional fixed fixtures can only keep a single plane horizontal, resulting in the need for manual secondary positioning when assembling the parts on the other side.
[0005] The double-sided assembly of the tailgate urgently needs to solve the fundamental problem of "multiple-sided operations in one clamping". Summary of the Invention
[0006] The object of the present invention is to provide an assembly structure of a tailgate system of a new energy vehicle to solve the problems raised in the above background technology.
[0007] To achieve the above objectives, the present invention provides the following technical solutions: an assembly structure for a new energy vehicle tailgate system, comprising a fixing frame, a crossbeam structure, and an assembly base, wherein the fixing frame comprises two symmetrically arranged upright posts, the ends of the crossbeam structure are connected to the tops of the upright posts, and the assembly base is mounted on the crossbeam structure via a movable seat;
[0008] The crossbeam structure includes a fixed end and a crossbeam column, wherein the fixed end is fixedly mounted on the column, and the crossbeam column is rotatably mounted in the fixed end;
[0009] The assembly base includes a first base and a second base, and a placement angle corresponding to the angle of the tailgate is provided between the first base and the second base.
[0010] Preferably, the fixing frame includes a bottom fixing frame, and the bottom of the column is fixedly mounted on the bottom fixing frame.
[0011] Preferably, the column comprises two columns arranged side by side, and mounting beams are provided on the tops of the two columns.
[0012] Preferably, the fixed end includes an upper clamping plate and a lower clamping plate, and the end of the beam column is installed between the upper clamping plate and the lower clamping plate.
[0013] Preferably, one end of the cross beam passes through the mounting beam and is connected to the rotating wheel, and the other end is provided with a clip structure symmetrically arranged on both sides of the cross beam.
[0014] Preferably, the clip structure includes a toggle clip and a clip, the toggle clip is fixedly mounted on the fixed end via a mounting plate, and the clip is fixedly mounted on the lower pressure head of the toggle clip;
[0015] The clip blocks the rotation of the beam shaft through friction under the downward pressure of the toggle clamp.
[0016] Preferably, a support beam is provided on the base, the bottom of the support beam is fixedly connected to the movable seat, and the bottom of the movable seat is fixedly installed on the crossbeam column.
[0017] Preferably, the placement angle is set according to the design angle of the tailgate.
[0018] Preferably, a handle is provided at one end of the base.
[0019] Compared with the prior art, the present invention has the following beneficial effects:
[0020] 1. The needle is adjustable and adaptable, with the placement angle set according to the tailgate design. These designs allow the base position and angle to be finely adjusted, perfectly matching the tailgates of new energy vehicles of different sizes and inclinations.
[0021] 2. The assembly base provided in the present invention is suitable for the tailgate. After the tailgate is placed, the outer side and the inner side of the tailgate can be turned upward as needed by rotating the assembly base, which facilitates the assembly of the inner and outer accessories on the tailgate. In particular, when the tailgate is composed of two bent plates, there is an angle between the two tailgate plates. Different assembly structures must be used to make each plate face upward. The present invention can achieve this purpose by rotating the assembly base. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 It is a schematic diagram of the structure of the present invention;
[0023] Figure 2 A top view of the present invention;
[0024] Figure 3 for Figure 2 The main view;
[0025] Figure 4 This is an enlarged view of the structure of the fixed frame and beam;
[0026] Figure 5 for Figure 4 Enlarged view of the structure at point A.
[0027] In the figure: 1-fixed frame;
[0028] 11- pillar;
[0029] 12- bottom fixing bracket;
[0030] 2- beam structure;
[0031] 21-fixed end;
[0032] 211-upper splint;
[0033] 212-lower splint;
[0034] 22- beam column;
[0035] 221-rotating wheel;
[0036] 23- Clip structure;
[0037] 231-Elbow clamp;
[0038] 232- clip;
[0039] 3-Assemble the base;
[0040] 31-base one;
[0041] 311-support beam;
[0042] 312-handle;
[0043] 32-base two;
[0044] 33-movable seat. DETAILED DESCRIPTION
[0045] The following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.
[0046] See also Figures 1 to 5 The present invention provides a technical solution: an assembly structure of a new energy vehicle tailgate system, comprising a fixing frame 1, a crossbeam structure 2, and an assembly base 3. The fixing frame 1 comprises two symmetrically arranged columns 11, the ends of the crossbeam structure 2 are connected to the tops of the columns 11, and the assembly base 3 is installed on the crossbeam structure 2 through a movable seat 33;
[0047] Two uprights 11 are installed vertically to support the entire weight and operating load of the crossbeam structure 2 and the assembly base 3. The height is designed to meet the ergonomics of the assembly line.
[0048] The crossbeam structure 2 includes a fixed end 21 and a crossbeam column 22. The fixed end 21 is fixedly mounted on the column 11, and the crossbeam column 22 is rotatably mounted in the fixed end 21.
[0049] The fixed end 21 accurately accommodates and supports the end of the crossbeam column 22, providing a reliable rotation center for it;
[0050] The crossbeam 22 carries the mounting base 3 and the tailgate loaded thereon, and rotates about its axis to achieve angle adjustment.
[0051] The assembly base 3 includes a first base 31 and a second base 32 , and a placement angle corresponding to the angle of the tailgate is defined between the first base 31 and the second base 32 .
[0052] The first base 31 and the second base 32 are used to place various fixtures for clamping the tailgate, so as to help the tailgate be placed on the assembly base 3 .
[0053] When the tailgate is placed in, its contact points or edges can naturally fit into or fit into this placement angle, ensuring: the tailgate has a correct posture; the center of gravity is stable to avoid tilting and shaking; and providing a correct reference for the fixture installed on it.
[0054] In this embodiment, the fixing frame 1 includes a bottom fixing frame 12, to which the bottoms of the columns 11 are fixedly mounted. Because the bottom fixing frame 12 is located at the bottom of the columns 11, it connects the two columns 11 into a stable integral frame. This frame is then fixed to the workshop floor or a mobile base, preventing the entire structure from tipping over or shifting. It is a key component that enhances overall stability.
[0055] The bottom bracket 12 rigidly connects the two independent columns 11 at their lowest point, forming a stable "door"-shaped frame that significantly prevents tipping. It is the key to the overall structural rigidity and anti-overturning properties.
[0056] In this embodiment, the column 11 includes two columns arranged side by side, and mounting beams are provided on the top of the two columns. The columns 11 are located on both sides of the bottom fixing frame 12, constituting the main vertical support of the structure, and the height must meet the ergonomic requirements of the assembly line.
[0057] In this embodiment, the fixed end 21 includes an upper clamping plate 211 and a lower clamping plate 212. The end of the crossbeam 22 is installed between the upper clamping plate 211 and the lower clamping plate 212. The upper clamping plate 211 and the lower clamping plate 212 constitute the main structure of the fixed end 21, forming a support seat for the shaft, which is used to accommodate and support the end of the crossbeam 22. It provides a rotation axis.
[0058] In this embodiment, one end of the crossbeam 22 passes through the mounting beam and is connected to the rotating wheel 221, and the other end is provided with a clip structure 23 symmetrically arranged on both sides of the crossbeam 22. The rotating wheel 221 is installed at one end of the crossbeam 22 extending from the fixed end, which is convenient for applying force when manually rotating the crossbeam.
[0059] In this embodiment, the clip structure 23 includes a toggle clip 231 and a clip 232. The toggle clip 231 is fixedly mounted on the fixed end 21 via a mounting plate, and the clip 232 is fixedly mounted on the lower pressure head of the toggle clip 231.
[0060] The clip 232 blocks the rotation of the beam shaft through friction under the downward pressure of the toggle clamp;
[0061] The toggle clamp 231 can easily generate a huge downward force by lever operation and is fixedly mounted at a suitable position of the fixed end 21.
[0062] The clip 232 is a pressing block made of friction material, such as rubber or nylon, and is fixed to the bottom of the pressing portion of the toggle clip 231 .
[0063] When the handle of the toggle clamp 231 is depressed:
[0064] The toggle clamp 231 drives the pressure head to move downward forcefully;
[0065] The clip 232 is pressed tightly against the surface of the crossbeam 22. A friction surface can be designed at the pressed joint to provide greater friction.
[0066] The high friction material at the bottom of the clip 232 generates a strong static friction force with the surface of the crossbeam 22 under the action of the huge downward pressure.
[0067] This friction force is much greater than the rotational torque that can be applied by the rotating drive wheel 221, thereby effectively locking the crossbeam 22 and preventing it from rotating under any load conditions.
[0068] In this embodiment, a support beam 311 is provided on the base 1 31, and the bottom of the support beam 311 is fixedly connected to the movable seat 33. The bottom of the movable seat 33 is fixedly installed on the crossbeam column 22. Through the movable seat 33, the purpose of assembling the base 3 and the crossbeam axis 22 to rotate together can be achieved.
[0069] In this embodiment, the placement angle is set according to the design angle of the tailgate, so as to facilitate the tailgate to be placed on the assembly base 3 with balanced force.
[0070] In this embodiment, a handle 312 is provided at the end of the base 1 31 to facilitate workers to grasp and apply force when adjusting the left and right positions of the base.
[0071] Working principle: It mainly includes the following steps:
[0072] 1. Preparation
[0073] 1.1. The device is securely fixed to the workshop floor or other mobile base through the bottom fixing frame 12;
[0074] 1.2. Based on the tailgate model to be assembled, initially adjust the assembly base 3 to the approximate required angle. You may need to refer to an angle scale or experience for reference.
[0075] At this time, the clip structure 23 should be in a loose state, that is, the handle of the toggle clamp 231 is in a raised state.
[0076] 2. Fine-tune the angle
[0077] 2.1. The worker stands on one side of the rotating wheel 221, or other convenient operating positions, and holds the handle of the rotating wheel 221;
[0078] 2.2 Rotate the rotating wheel 221, drive the beam column 22 and the assembly base 3 fixedly connected thereto to rotate together, because they are connected together through the movable seat 33, so they have a basis for rotating together;
[0079] 2.3. The worker visually, possibly with the aid of an inclinometer, precisely adjusts the placement angle of the assembly base 3 to the desired design angle of the tailgate to achieve angle adjustment.
[0080] 2.4. After the angle is adjusted, the worker operates by pressing the toggle clamp 231 mounted on the fixed end. The lever mechanism of the toggle clamp 231 amplifies the operating force, driving the downward pressure head to press down forcefully.
[0081] The clip 232 fixed on the pressure head is then pressed tightly against the beam 22. Since the clip 232 is made of a high-friction material such as rubber or nylon, it generates a huge static friction force so that the rotation of the beam 22 is reliably locked, and the placement angle of the assembly base 3 is fixed.
[0082] 3. Placement and assembly of the tailgate:
[0083] 3.1. Carefully hoist or carry the tailgate onto the assembly base 3;
[0084] The tailgate's contour and center of gravity position allow it to fit naturally and securely within the preset design placement angle formed by the first base 31 and the second base 32, achieving balanced force placement.
[0085] 3.2. Workers connect, tighten, and perform other assembly operations on the tailgate.
[0086] 4. Completion and reset:
[0087] 4.1 After assembly is completed, remove the tailgate;
[0088] 4.2 If you need to prepare for the next process or another type of tailgate:
[0089] 4.2.1. Release the handle of the toggle clamp 231 to unlock the crossbeam 22;
[0090] 4.2.2. Repeat step 2, rotate the assembly base 3 to a new angle and lock it.
[0091] Based on the above, the needle of the invention has adjustability and adaptability, and the placement angle is set according to the design angle of the tailgate. These designs enable the base position and angle to be finely adjusted, perfectly matching the tailgates of new energy vehicles of different sizes and inclinations; the assembly base set by the invention is suitable for the tailgate. After the tailgate is placed, the outer and inner sides of the tailgate can be turned upward as needed by rotating the assembly base, which facilitates the assembly of the inner and outer accessories on the tailgate, especially when the tailgate is composed of two bent plates, there is an angle between the two tailgate plates, and different assembly structures must be used to make each plate face upward. The present invention can achieve this goal by rotating the assembly base.
[0092] It is understood from common technical knowledge that the present invention may be implemented by other embodiments that do not depart from its spirit or essential features. Therefore, the embodiments disclosed above are, in all respects, merely illustrative and not exclusive. All modifications within the scope of the present invention or equivalent to the scope of the present invention are intended to be encompassed by the present invention.
Claims
1. An assembly structure for a new energy vehicle tailgate system, characterized by: The invention comprises a fixing frame (1), a crossbeam structure (2) and an assembly base (3), wherein the fixing frame (1) comprises two symmetrically arranged columns (11), two ends of the crossbeam structure (2) are connected to the tops of the columns (11), and the assembly base (3) is installed on the crossbeam structure (2) via a movable seat (33); The crossbeam structure (2) comprises a fixed end (21) and a crossbeam column (22), wherein the fixed end (21) is fixedly mounted on the column (11), and the crossbeam column (22) is rotatably mounted in the fixed end (21); The assembly base (3) comprises a base 1 (31) and a base 2 (32), and a placement angle corresponding to the tailgate angle is provided between the base 1 (31) and the base 2 (32).
2. The assembly structure of the tailgate system of a new energy vehicle according to claim 1, characterized in that: The fixing frame (1) comprises a bottom fixing frame (12), and the bottom of the column (11) is fixedly mounted on the bottom fixing frame (12).
3. The assembly structure of the tailgate system of a new energy vehicle according to claim 2, characterized in that: The column (11) comprises two columns arranged side by side, and the tops of the two columns are provided with mounting beams.
4. The assembly structure of the tailgate system of a new energy vehicle according to claim 1, characterized in that: The fixed end (21) comprises an upper clamping plate (211) and a lower clamping plate (212), and the end of the crossbeam column (22) is installed between the upper clamping plate (211) and the lower clamping plate (212).
5. The assembly structure of the tailgate system of a new energy vehicle according to claim 3, characterized in that: One end of the crossbeam (22) passes through the mounting beam and is connected to the rotating wheel (221), and the other end is provided with a clip structure (23) symmetrically arranged on both sides of the crossbeam (22).
6. The assembly structure of the tailgate system of a new energy vehicle according to claim 5, characterized in that: The clip structure (23) comprises a toggle clip (231) and a clip (232), wherein the toggle clip (231) is fixedly mounted on the fixed end (21) via a mounting plate, and the clip (232) is fixedly mounted on the lower pressure head of the toggle clip (231); The clamping piece (232) blocks the rotation of the beam shaft through friction under the downward pressure of the toggle clamp.
7. The assembly structure of the tailgate system of a new energy vehicle according to claim 1, characterized in that: A support beam (311) is provided on the base (31), the bottom of the support beam (311) is fixedly connected to the movable seat (33), and the bottom of the movable seat (33) is fixedly installed on the crossbeam column (22).
8. The assembly structure of a new energy vehicle tailgate system according to claim 1, characterized in that: The placement angle is set according to the design angle of the tailgate.
9. The assembly structure of a new energy vehicle tailgate system according to claim 1, characterized in that: A handle (312) is provided at the end of the base one (31).