Carbon fiber composite vehicle door edge covering structure
By using a dual fixing method of bolts and clips, the problems of inaccurate fixing and poor stability in the carbon fiber composite door edging structure are solved, achieving an efficient and stable edging process and improving the quality and production efficiency of the door.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DELAPENG NEW MATERIAL TECH (CHANGZHOU) CO LTD
- Filing Date
- 2025-07-30
- Publication Date
- 2026-05-19
AI Technical Summary
In existing technologies, carbon fiber composite door edging structures suffer from problems such as inaccurate clamping, poor stability, and low efficiency during the fixing process, resulting in inconsistent edging quality and making it difficult to meet the high-efficiency and automated requirements of modern automobile production.
The system employs a dual fixing method combining bolts and snap-fit, along with the positioning of sealing strips and threaded rods, to achieve a stable connection between the panels and ensure the fixing accuracy and stability during the edge-wrapping process.
It improves the stability and efficiency of the edge-wrapping process, reduces rework, enhances the overall performance and production efficiency of the door, and reduces labor costs.
Smart Images

Figure CN224256414U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of composite vehicle door technology, and in particular to a carbon fiber composite vehicle door edging structure. Background Technology
[0002] In the wave of automotive lightweighting and high performance development, carbon fiber composite materials, with their high strength and low density, have brought a revolutionary opportunity to the door edging structure. Traditional metal door edging has gradually been limited by its heavy weight, poor corrosion resistance, and complex manufacturing process. While carbon fiber materials can significantly reduce door weight and increase design freedom, they face challenges such as insufficient adaptability of bonding processes, poor interface bonding performance, and high cost. These contradictions have driven the continuous in-depth research and development of carbon fiber composite door edging structures, aiming to break through the dual limitations of material properties and process requirements and achieve a balance between lightweight, high reliability, and low cost.
[0003] Door edge binding is a crucial step in the car door manufacturing process, directly impacting the door's sealing, rigidity, and surface smoothness. Currently, existing door edge binding structures often struggle to effectively secure the inner and outer door panels during the binding process. This issue is particularly pronounced in the production of doors using carbon fiber composites and other novel materials. Because carbon fiber composites possess different physical properties from traditional metals, such as differences in elastic modulus and toughness, higher demands are placed on the fixing precision and stability during the edge binding process. In actual production, the primary method for fixing door edges is manual clamping. Operators use simple clamps or tools to manually apply pressure to clamp and fix the inner and outer door panels at the edge binding location before proceeding with the edge binding operation. However, this manual clamping method has several shortcomings. Firstly, manual clamping... The clamping force is difficult to control precisely, easily resulting in clamping that is too loose or too tight. Too loose a clamping force can cause relative displacement between the inner and outer panels of the door during the edging process, affecting the dimensional accuracy and connection strength of the edging, potentially leading to uneven edging and excessive gaps. Too tight a clamping force can damage the relatively brittle carbon fiber composite material, causing cracks and delamination, compromising the structural integrity of the material, and reducing the overall performance of the door. Secondly, manual operation has poor stability, influenced by the operator's skill level. Different operators, and even the same operator at different times, can produce varying clamping results, making it difficult to guarantee consistent edging quality and hindering standardized production. Furthermore, manual clamping is inefficient, requiring significant manpower and time, failing to meet the high-efficiency, automated cycle requirements of modern automotive production, thus restricting production efficiency and increasing production costs. Utility Model Content
[0004] To overcome the above shortcomings, this utility model provides a carbon fiber composite door edging structure, which aims to improve the problem of manual clamping and fixing, which is the main method used in the prior art.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: a carbon fiber composite car door edging structure, comprising a car panel one, a bolt two fixedly connected to the top of the car panel one, a fixing plate one fixedly connected to the bottom of the bolt two, a bolt three fixedly connected to the front side of the fixing plate one, a fixing plate two fixedly connected to the right side of the car panel one, a buckle one fixedly connected to the right side of the fixing plate two, a clamping plate connected to the inner wall of the buckle one, a rotating plate rotatably connected to the middle of the clamping plate, a rotating shaft three rotatably connected to the front side of the clamping plate, a buckle two rotatably connected to the front side of the rotating shaft three, a buckle three connected to the middle of the buckle two, a fixing plate three fixedly connected to the left side of the buckle three, and positioning mechanisms provided on both the left and right sides of the car panel one for positioning.
[0006] As a further description of the above technical solution:
[0007] The positioning mechanism includes a second vehicle plate, which is disposed on the front side of a first vehicle plate. A first connecting plate is fixedly connected to the right side of the second vehicle plate. A slot is formed on the right side of the first connecting plate. Two first rotating shafts are rotatably connected to the inner wall of the slot. A second rotating shaft is fixedly connected to the right side of the first rotating shaft. A second connecting plate is fixedly connected to the right side of the second rotating shaft. A threaded rod is threadedly connected to the right side of the second connecting plate. A bolt is engaged with the outer wall of the second connecting plate.
[0008] As a further description of the above technical solution:
[0009] The left side of the first bolt is fixedly connected to the right side of the second vehicle panel, and the rear side of the first rotating shaft is rotatably connected to the front side of the second vehicle panel.
[0010] As a further description of the above technical solution:
[0011] Two hinges are fixedly connected to the bottom of the first vehicle panel, and the front side of the hinges is fixedly connected to the bottom of the second vehicle panel.
[0012] As a further description of the above technical solution:
[0013] A sealing strip is fixedly connected to the front outer wall of vehicle panel one, and the front side of the sealing strip is fixedly connected to the rear side of vehicle panel two.
[0014] As a further description of the above technical solution:
[0015] A storage compartment is fixedly connected to the outer wall of the second vehicle panel, and the outer wall of the storage compartment has holes.
[0016] As a further description of the above technical solution:
[0017] A door handle is fixedly connected to the left side of the outer wall of the second vehicle panel, and a button is fixedly connected to the left side of the storage compartment.
[0018] As a further description of the above technical solution:
[0019] The top of the second vehicle panel has a screw hole, and the outer wall of the first vehicle panel has a slot.
[0020] This utility model has the following beneficial effects:
[0021] 1. In this utility model, the dual fixing method of bolt fixing and buckle engagement allows the first and second vehicle panels to be connected. At the same time, the insertion of the sealing strip and the positioning of the threaded rod and bolt can effectively prevent displacement or loosening of the two during the subsequent edge-wrapping process, providing a stable foundation for edge-wrapping and ensuring that subsequent operations are carried out as expected.
[0022] 2. In this utility model, the sealing strip installation and basic positioning are first completed by snapping and initial fixing, and then the fixing is achieved by rotating the shaft and tightening the bolts. This can quickly complete the initial fixing and positioning between the vehicle panels, and pave the way for subsequent fixing and edging work, reduce rework caused by inaccurate positioning or unstable fixing, and thus improve the overall construction efficiency. Attached Figure Description
[0023] Figure 1 This is a front perspective view of a carbon fiber composite door edging structure proposed in this utility model;
[0024] Figure 2 This is a right-side structural diagram of a carbon fiber composite car door edging structure proposed in this utility model;
[0025] Figure 3 This is a partial structural diagram of a carbon fiber composite car door edging structure proposed in this utility model;
[0026] Figure 4 This is a partial structural illustration of a carbon fiber composite car door edging structure proposed in this utility model;
[0027] Figure 5 This is a partial structural diagram of a carbon fiber composite car door edging structure proposed in this utility model.
[0028] Legend:
[0029] 1. Car body plate one; 2. Positioning mechanism; 201. Connecting plate one; 202. Hole slot one; 203. Rotating shaft one; 204. Rotating shaft two; 205. Connecting plate two; 206. Bolt one; 207. Threaded rod; 208. Car body plate two; 3. Fixing plate one; 4. Bolt two; 5. Bolt three; 6. Hinge; 7. Fixing plate two; 8. Clip one; 9. Clip plate; 10. Rotating shaft three; 11. Clip two; 12. Fixing plate three; 13. Clip three; 14. Clip groove; 15. Screw hole; 16. Sealing strip; 17. Storage compartment; 18. Hole; 19. Button; 20. Door handle; 21. Rotating plate. Detailed Implementation
[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0031] Please see the appendix Figure 2 Appendix Figure 3 and attached Figure 4 An embodiment of this utility model provides a carbon fiber composite car door edging structure, including a car panel 1, a bolt 2 4 fixedly connected to the top of the car panel 1, a fixing plate 3 fixedly connected to the bottom of the bolt 2 4, a bolt 3 5 fixedly connected to the front side of the fixing plate 3, a fixing plate 2 7 fixedly connected to the right side of the car panel 1, a buckle 1 8 fixedly connected to the right side of the fixing plate 2 7, a buckle 9 clamped and connected to the inner wall of the buckle 1 8, a rotating plate 21 rotatably connected to the middle of the buckle 9, a rotating shaft 3 10 rotatably connected to the front side of the buckle 9, a buckle 2 11 rotatably connected to the front side of the rotating shaft 3 10, a buckle 3 13 clamped and connected to the middle of the buckle 2 11, a fixing plate 3 12 fixedly connected to the left side of the buckle 3 13, a positioning mechanism 2 is provided on both the left and right sides of the car panel 1, the positioning mechanism 2 is used for positioning, a screw hole 15 is opened on the top of the car panel 2 208, and a slot 14 is opened on the outer wall of the car panel 1;
[0032] Specifically, a carbon fiber composite door edging structure includes a panel 1. The top of panel 1 is fixedly connected by bolt 2 4. The bottom of bolt 2 4 is fixedly connected to a fixing plate 3. The front side of fixing plate 3 is fixedly connected by bolt 3 5. The right side of panel 1 is fixedly connected to fixing plate 2 7. The right side of fixing plate 2 7 is fixedly connected to buckle 1 8. The inner wall of buckle 1 8 is connected to buckle 9. The middle of buckle 9 is rotatably connected to rotating plate 21. The front side of buckle 9 is rotatably connected by pivot 3 10. The front side of pivot 3 10 is rotatably connected to buckle 2 11. The middle of buckle 2 11 is connected to buckle 3 13. The left side of buckle 3 13 is fixedly connected to fixing plate 3 12. Positioning mechanisms 2 are provided on both the left and right sides of panel 1. Positioning mechanisms 2 are mainly used for positioning. The top of panel 2 2 08 is provided with screw holes 15 for easy connection. The outer wall of panel 1 is provided with slots 14.
[0033] Please see the appendix Figure 1 Appendix Figure 2 and attached Figure 5 The positioning mechanism 2 includes a second vehicle plate 208, which is located on the front side of the first vehicle plate 1. A first connecting plate 201 is fixedly connected to the right side of the second vehicle plate 208. A first slot 202 is opened on the right side of the first connecting plate 201. Two first rotating shafts 203 are rotatably connected to the inner wall of the first slot 202. A second rotating shaft 204 is fixedly connected to the right side of the first rotating shaft 203. A second connecting plate 205 is fixedly connected to the right side of the second rotating shaft 204. A threaded rod 207 is threadedly connected to the right side of the second connecting plate 205. A bolt 206 is engaged with the outer wall of the second connecting plate 205. The left side of the bolt 206 is fixedly connected to the right side of the second vehicle plate 208, and the rear side of the first rotating shaft 203 is rotatably connected to the front side of the second vehicle plate 208.
[0034] Specifically, vehicle plate 208 is located on the front side of vehicle plate 1. Connecting plate 201 is fixedly connected to the right side of vehicle plate 208. A slot 202 is provided on the right side of connecting plate 201. Two rotating shafts 203 are rotatably connected to the inner wall of slot 202. The right side of the two rotating shafts 203 is fixedly connected to rotating shaft 204. Connecting plate 205 is fixedly connected to the right side of rotating shaft 204. Threaded rod 207 is threadedly connected to the right side of connecting plate 205. Bolt 206 engages with the outer wall of connecting plate 205. The left side of bolt 206 is fixedly connected to the right side of vehicle plate 208. The rear part of rotating shaft 203 is rotatably connected to the front edge of vehicle plate 208 to ensure the operation of the entire structure.
[0035] Please see the appendix Figure 2 and attached Figure 3Two hinges 6 are fixedly connected to the bottom of the first car panel 1. The front side of the hinges 6 is fixedly connected to the bottom of the second car panel 208. A sealing strip 16 is fixedly connected to the front outer wall of the first car panel 1. The front side of the sealing strip 16 is fixedly connected to the rear side of the second car panel 208.
[0036] Specifically, two hinges 6 are fixedly connected to the bottom of the first panel 1. The front side of the hinges 6 is fixedly connected to the bottom of the second panel 208. A sealing strip 16 is fixedly connected to the front outer wall of the first panel 1. The front side of the sealing strip 16 is fixedly connected to the rear side of the second panel 208.
[0037] Please see the appendix Figure 2 and attached Figure 3 A storage compartment 17 is fixedly connected to the outer wall of the second vehicle panel 208. The outer wall of the storage compartment 17 has a hole 18. A door handle 20 is fixedly connected to the left side of the outer wall of the second vehicle panel 208. A button 19 is fixedly connected to the left side of the storage compartment 17.
[0038] Specifically, a storage compartment 17 is fixedly connected to the outer wall of the second panel 208. A hole 18 is opened in the outer wall of the storage compartment 17. A door handle 20 is fixedly connected to the left side of the outer wall of the second panel 208. A button 19 is fixedly connected to the left side of the storage compartment 17.
[0039] Working principle: Fixing plate 3 is fixed to car plate 1 by bolt 2 4. Then, bolt 3 5 is connected to the screw hole 15 on car plate 2 208, so that car plate 2 208 and car plate 1 are initially fixed. Then, by pulling buckle 2 11, buckle 2 11 drives the rotating shaft 3 10 to rotate, so that rotating plate 21 rotates with rotating shaft 3 10. Then, clamp plate 9 is inserted into buckle 8, so that car plate 1 and car plate 2 208 are fixed, thus providing initial fixation for the subsequent edge binding process.
[0040] First, engage the second panel 208 with the first panel 1 to insert the sealing strip 16 between them. Then, rotate the first shaft 203 to drive the second shaft 204 to engage the threaded rod 207 into the second connecting plate 205. Next, tighten the bolt 206 to the outer wall of the threaded rod 207 to initially position the second panel 208 with the first panel 1, allowing subsequent fixing and edging to proceed smoothly.
[0041] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A carbon fiber composite door edging structure, comprising a vehicle panel (1), characterized in that: The top of the vehicle panel (1) is fixedly connected to bolt 2 (4), the bottom of bolt 2 (4) is fixedly connected to fixing plate 1 (3), the front side of fixing plate 1 (3) is fixedly connected to bolt 3 (5), the right side of the vehicle panel (1) is fixedly connected to fixing plate 2 (7), the right side of fixing plate 2 (7) is fixedly connected to buckle 1 (8), the inner wall of buckle 1 (8) is engaged with buckle plate (9), the middle of buckle plate (9) is rotatably connected to rotating plate (21), the front side of buckle plate (9) is rotatably connected to rotating shaft 3 (10), the front side of rotating shaft 3 (10) is rotatably connected to buckle 2 (11), the middle of buckle 2 (11) is engaged with buckle 3 (13), the left side of buckle 3 (13) is fixedly connected to fixing plate 3 (12), and positioning mechanisms (2) are provided on both the left and right sides of the vehicle panel (1). The positioning mechanisms (2) are used for positioning.
2. The carbon fiber composite door edging structure according to claim 1, characterized in that: The positioning mechanism (2) includes a second vehicle plate (208), which is located on the front side of the first vehicle plate (1). A connecting plate (201) is fixedly connected to the right side of the second vehicle plate (208). A slot (202) is provided on the right side of the connecting plate (201). Two rotating shafts (203) are rotatably connected to the inner wall of the slot (202). A rotating shaft (204) is fixedly connected to the right side of the rotating shaft (203). A connecting plate (205) is fixedly connected to the right side of the rotating shaft (204). A threaded rod (207) is threadedly connected to the right side of the connecting plate (205). A bolt (206) is engaged with the outer wall of the connecting plate (205).
3. The carbon fiber composite door edging structure according to claim 2, characterized in that: The left side of the bolt one (206) is fixedly connected to the right side of the vehicle plate two (208), and the rear side of the rotating shaft one (203) is rotatably connected to the front side of the vehicle plate two (208).
4. The carbon fiber composite door edging structure according to claim 1, characterized in that: Two hinges (6) are fixedly connected to the bottom of the first vehicle panel (1), and the front side of the hinges (6) is fixedly connected to the bottom of the second vehicle panel (208).
5. The carbon fiber composite door edging structure according to claim 1, characterized in that: A sealing strip (16) is fixedly connected to the front outer wall of the first vehicle panel (1), and the front side of the sealing strip (16) is fixedly connected to the rear side of the second vehicle panel (208).
6. The carbon fiber composite door edging structure according to claim 2, characterized in that: A storage compartment (17) is fixedly connected to the outer wall of the second vehicle panel (208), and the outer wall of the storage compartment (17) has holes (18).
7. The carbon fiber composite door edging structure according to claim 6, characterized in that: A door handle (20) is fixedly connected to the left side of the outer wall of the second vehicle panel (208), and a button (19) is fixedly connected to the left side of the storage compartment (17).
8. The carbon fiber composite door edging structure according to claim 2, characterized in that: The top of the second vehicle panel (208) is provided with a screw hole (15), and the outer wall of the first vehicle panel (1) is provided with a slot (14).