Split type C column upper guard plate structure of automotive trim
By combining the split C-pillar upper guard plate structure with the snap-fit parts, the problem of insufficient light transmission area of the traditional C-pillar upper guard plate is solved, achieving a larger light-receiving area and field of vision, improving the riding experience, and reducing installation complexity and cost.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-08
- Publication Date
- 2026-03-27
AI Technical Summary
The existing C-pillar upper guard plate structure is limited by the molding and demolding angle, which causes the light-transmitting area of the triangular window to gradually decrease, affecting the lighting effect and the view.
The C-pillar upper guard plate adopts a split structure, separating the C-pillar upper guard plate body from the decorative ring. It uses a snap-fit component to cooperate with the slot to increase the light transmission area of the triangular window. It is detachably connected to the car body through a connecting component to ensure convenient installation and safe connection.
It improves the lighting area and field of vision of the car's triangular window, enhances ride comfort, reduces installation costs and time, and enhances connection security and noise reduction performance.
Smart Images
Figure CN121734253A_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of automotive parts technology, and specifically relates to a split C-pillar upper guard plate structure for automotive interiors. Background Technology
[0002] The C-pillar upper guard plate, in conjunction with the rear quarter window, not only enhances the aesthetics of the overall vehicle design but, more importantly, effectively improves rear passenger lighting and provides a better view for rear passengers. Due to its unique characteristics, the C-pillar upper guard plate and rear quarter window structure plays an indispensable role in automotive design. It is an important component of the vehicle's structure, providing passengers with a more comfortable riding environment. As customers' demands for automotive ride comfort continue to increase, the C-pillar upper guard plate is receiving more and more attention.
[0003] In the existing technology, there are two main structural forms of C-pillar upper guard plates. One is an integral structure, in which the flange of the C-pillar upper guard plate and the rear quarter window extends from the main body of the C-pillar outwards. Due to the limitation of the molding angle of the plastic parts, the light-transmitting area of the guard plate and the rear quarter window gradually narrows from the large surface of the C-pillar upper guard plate towards the quarter window, ultimately resulting in insufficient light transmission area. The other is a semi-circular structure, in which the C-pillar upper guard plate adopts a semi-circular design. Similarly, due to the molding angle requirements of the plastic parts, the light-transmitting area shows a gradually decreasing characteristic, which in turn affects the lighting effect of the rear quarter window.
[0004] Therefore, overcoming the shortcomings of the existing technology is an urgent problem to be solved in this technical field. Summary of the Invention
[0005] To address the aforementioned issues, this application provides a split C-pillar upper guard plate structure for automotive interiors. By separating a decorative ring from the C-pillar upper guard plate body at the edge where it mates with the triangular window, the light-transmitting area of the triangular window is increased.
[0006] A split C-pillar upper guard plate structure for automotive interiors includes a C-pillar upper guard plate body and a C-pillar upper guard plate decorative ring. The C-pillar upper guard plate body has three snap-fit components integrally formed on the side facing the C-pillar upper guard plate decorative ring, with snap-fit components one, two, and three spaced apart circumferentially along the C-pillar upper guard plate body. Multiple sets of slots are formed around the perimeter of the C-pillar upper guard plate decorative ring, each set of slots being adapted to snap-fit components one, two, and three, and snap-fit components one, two, and three engaging with their corresponding slots. The side of the C-pillar upper guard plate decorative ring away from the C-pillar upper guard plate body is fitted with the edge of the automotive triangular window with a clearance fit.
[0007] Furthermore, the first type of snap-fit component is a door-shaped buckle, the top of which is flat and triangular, and the outer side wall of the door-shaped buckle is provided with tooth-shaped protrusions.
[0008] Furthermore, the second snap-fit component is a single-sided snap-fit, and the top side of the single-sided snap-fit is provided with a toothed protrusion.
[0009] Furthermore, the third snap-fit component is a combination structure of a door-shaped snap-fit and a single-sided snap-fit, and the toothed protrusions of the door-shaped snap-fit and the toothed protrusions of the single-sided snap-fit are arranged in opposite directions to adapt to different limiting surfaces of the corresponding slots.
[0010] Furthermore, the surface height of the decorative ring on the C-pillar upper guard plate is higher than the surface height of the C-pillar upper guard plate body, and a transition rounded corner is provided at the mating edge of the decorative ring on the C-pillar upper guard plate and the C-pillar upper guard plate body.
[0011] Furthermore, limiting units are evenly provided on both sides of the mating edge of the C-pillar upper guard plate decorative ring and the C-pillar upper guard plate body. The limiting units are used to limit the inward deformation or outward deformation caused by the mating flange of the C-pillar upper guard plate decorative ring and the C-pillar upper guard plate body, so as to control the surface difference between the C-pillar upper guard plate decorative ring and the C-pillar upper guard plate body.
[0012] Furthermore, the C-pillar upper guard plate body is detachably connected to the car body via a connecting assembly. The connecting assembly includes an explosion-proof buckle, a D-type buckle, two metal buckles, and two multi-layer elastic clips. The explosion-proof buckle, D-type buckle, metal buckle, and multi-layer elastic clips are all distributed circumferentially along the C-pillar upper guard plate body and are respectively adapted to and engaged with the corresponding installation positions on the car body.
[0013] Furthermore, the explosion-proof buckle has an anchor-shaped top and a three-layer plate-like structure at the bottom, with the upper plate being arched; the D-shaped buckle has an angular column-like top and a three-layer stacked ring-like structure at the bottom; the metal buckle is formed by bending a metal sheet multiple times to create a U-shaped main frame, with inclined plate-like feet extending outwards from both ends; the multi-layer elastic clip has a flat, round protrusion at the top and a three-layer disc-like structure at the bottom.
[0014] Furthermore, sound-absorbing cotton is adhered to the C-pillar upper guard plate body within the area of the D-shaped buckle.
[0015] Furthermore, sound-absorbing cotton is bonded to the C-pillar upper guard plate body within the area of the metal clip.
[0016] Compared with the prior art, this application has the following advantages: The present invention relates to a split C-pillar upper guard plate structure for automotive interiors. It adopts a split structure of the C-pillar upper guard plate body and the C-pillar upper guard plate decorative ring. By using the gap fit between the C-pillar upper guard plate decorative ring and the automotive triangular window, it solves the problem that when the traditional C-pillar upper guard plate structure is made with a flange, the opening towards the automotive triangular window gradually becomes smaller due to the limitations of the molding die, resulting in a small light-transmitting area of the automotive triangular window. This improves the lighting and visibility performance.
[0017] Other features and advantages of this application will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the application. The objectives and other advantages of this application may be realized and obtained by means of the structures pointed out in the description, claims and drawings. Attached Figure Description
[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0019] Figure 1 A first schematic diagram of the entire invention is shown; Figure 2 This invention shows a cross-sectional view of the decorative ring on the C-pillar upper guard plate and the triangular window of the car. Figure 3 A second schematic diagram of the entire invention is shown; Figure 4 A cross-sectional view of one part of the snap-fit component of the present invention is shown; Figure 5 Cross-sectional views of two parts of the snap-fit component of the present invention are shown; Figure 6 Cross-sectional views of three locations of the snap-fit connector of the present invention are shown; Figure 7 A cross-sectional view of the transition fillet of the decorative ring on the C-pillar upper guard plate of the present invention is shown; Figure 8 A cross-sectional view of the limiting unit of the decorative ring on the C-pillar upper guard plate of the present invention is shown; Figure 9 An exploded view of the body of the C-pillar upper guard plate of the present invention is shown; Figure 10 A schematic diagram of the explosion-proof buckle of the present invention is shown; Figure 11 A schematic diagram of the D-type buckle of the present invention is shown; Figure 12 A schematic diagram of the metal buckle of the present invention is shown; Figure 13A schematic diagram of the multi-layer elastic clip of the present invention is shown.
[0020] Illustrations: 1. C-pillar upper guard plate body; 2. C-pillar upper guard plate decorative ring; 3. Clip-on component one; 4. Clip-on component two; 5. Clip-on component three; 6. Explosion-proof buckle; 7. D-type buckle; 8. Metal buckle; 9. Multi-layer elastic clip; 10. Sound-absorbing cotton one; 11. Sound-absorbing cotton two; 12. Slot; 13. Car triangular window; 14. Transition rounded corner; 15. Limiting unit. Detailed Implementation
[0021] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0022] like Figure 1-6 and Figure 9 As shown, the present invention provides a split C-pillar upper guard plate structure for automotive interiors, including a C-pillar upper guard plate body 1 and a C-pillar upper guard plate decorative ring 2; the C-pillar upper guard plate body 1 has a snap-fit component 3, a snap-fit component 4, and a snap-fit component 5 integrally formed on the side facing the C-pillar upper guard plate decorative ring 2, and the snap-fit component 3, snap-fit component 4, and snap-fit component 5 are distributed at intervals along the circumference of the C-pillar upper guard plate body 1; multiple sets of slots 12 are formed at the four edges of the C-pillar upper guard plate decorative ring 2, each set of slots 12 is adapted to the snap-fit component 3, snap-fit component 4, and snap-fit component 5 respectively, and the snap-fit component 3, snap-fit component 4, and snap-fit component 5 are engaged with the corresponding slots 12; the side of the C-pillar upper guard plate decorative ring 2 away from the C-pillar upper guard plate body 1 is fitted with the edge of the automotive triangular window 13 with a clearance fit.
[0023] The snap-fit component 3 is a door-shaped buckle. The top of the door-shaped buckle is flat and triangular, and the outer side wall of the door-shaped buckle is provided with tooth-shaped protrusions.
[0024] The second snap fastener 4 is a single-sided snap fastener, and a toothed protrusion is provided on one side of the top of the single-sided snap fastener; The snap-fit component 35 is a combination structure of a door-shaped snap-fit and a single-sided snap-fit, and the toothed protrusions of the door-shaped snap-fit and the toothed protrusions of the single-sided snap-fit are arranged in opposite directions to adapt to different limiting surfaces of the corresponding slot 12.
[0025] This application takes into account that existing C-pillar upper guard plates mainly have two structural forms. The first is an integral structure, where the flange connecting the C-pillar upper guard plate and the rear quarter window extends outwards from the main body of the C-pillar. Due to the limitation of the molding angle of the plastic parts, the light-transmitting area between the guard plate and the rear quarter window gradually narrows from the large surface of the C-pillar upper guard plate towards the quarter window, ultimately resulting in insufficient light transmission. The second is a semi-circular structure, where the C-pillar upper guard plate adopts a semi-circular design. Similarly, due to the molding angle requirements for the plastic parts, the light-transmitting area gradually decreases, thus affecting the lighting effect of the rear quarter window. Therefore, this application adopts a C-pillar upper guard plate with a semi-circular design. The separate structure of the pillar guard plate body 1 and the C-pillar guard plate decorative ring 2, and the gap fit between the C-pillar guard plate decorative ring 2 and the car triangular window 13, solves the problem that when the traditional C-pillar guard plate structure is made with a flange, the opening towards the car triangular window 13 gradually becomes smaller due to the limitations of the molding mold, resulting in a small light-transmitting area of the car triangular window 13. This improves the lighting and visibility performance. At the same time, by increasing the light-transmitting area of the C-pillar guard plate body 1 and the car triangular window 13 area, the lighting range and field of vision of the rear passengers are effectively improved, alleviating the sense of oppression caused by the small light-transmitting area.
[0026] During operation, workers engage snap-fit components 1 (3), 2 (4), and 3 (5) with their corresponding slots 12 to quickly install the C-pillar upper guard plate body 1 and the C-pillar upper guard plate decorative ring 2. It should be noted that snap-fit component 1 (3) is a door-shaped snap-fit structure, which can evenly tighten the C-pillar upper guard plate body 1 and the C-pillar upper guard plate decorative ring 2. Therefore, snap-fit components 1 (3) are evenly distributed around the mating area. Snap-fit components 3 (5) are placed in areas where gaps are likely to appear between the C-pillar upper guard plate body 1 and the C-pillar upper guard plate decorative ring 2. This combination of door-shaped and single-sided snap-fit structures effectively solves the problem of gaps in the C-pillar upper guard plate body 1 and the C-pillar upper guard plate decorative ring 2. To address the gap between the C-pillar upper guard plate body 1 and the C-pillar upper guard plate decorative ring 2, and in areas where there is a risk of gaps and insufficient space, a second snap-fit component 4 is installed. Since the second snap-fit component 4 is a single-sided snap-fit structure, it can effectively solve the gap problem between the C-pillar upper guard plate body 1 and the C-pillar upper guard plate decorative ring 2, and can also meet the requirements of installation in limited space. Through the arrangement of the above three snap-fit structures, the installation between the C-pillar upper guard plate body 1 and the C-pillar upper guard plate decorative ring 2 is not only more convenient and faster, but also, compared with fixing methods such as screw fastening, hot melt welding, and ultrasonic welding, no additional accessories and auxiliary tooling are required, which takes less time and costs less.
[0027] like Figure 7 As shown, at the mating point between the decorative ring 2 and the body 1 of the C-pillar upper guard plate, the surface height of the decorative ring 2 is higher than the surface height of the body 1 of the C-pillar upper guard plate, and a transition rounded corner 14 is provided at the mating edge between the decorative ring 2 and the body 1 of the C-pillar upper guard plate. It should be further explained that when passengers observe the interior of the vehicle from the triangular window 13 outside the vehicle, the C-pillar upper guard plate decorative ring 2, being higher than the C-pillar upper guard plate body 1, effectively conceals the gap between the C-pillar upper guard plate decorative ring 2 and the C-pillar upper guard plate body 1, making them appear as a single unit. However, when observing the exterior from inside the vehicle from the C-pillar upper guard plate body 1, the rounded corners 14 at the mating edges of the C-pillar upper guard plate decorative ring 2 and the C-pillar upper guard plate body 1 create a smooth transition step, greatly minimizing the assembly gap that appears after the C-pillar upper guard plate decorative ring 2 and the C-pillar upper guard plate body 1 are separated, thus avoiding affecting the visual integrity of the C-pillar upper guard plate structure.
[0028] like Figure 8 As shown, limiting units 15 are evenly provided on both sides of the mating edge of the C-pillar upper guard plate decorative ring 2 and the C-pillar upper guard plate body 1. The limiting units 15 are used to limit the inward deformation or outward deformation caused by the mating flange of the C-pillar upper guard plate decorative ring 2 and the C-pillar upper guard plate body 1, so as to control the surface difference between the C-pillar upper guard plate decorative ring 2 and the C-pillar upper guard plate body 1.
[0029] It should also be noted that the design of the limiting unit 15 can limit the inward or outward deformation caused by the flange of the C-pillar upper guard plate decorative ring 2 and the C-pillar upper guard plate body 1, thereby controlling the surface difference between the C-pillar upper guard plate decorative ring 2 and the C-pillar upper guard plate body 1, so as to ensure the overall appearance and assembly accuracy of the C-pillar upper guard plate structure.
[0030] like Figure 1 , 3 As shown in Figure 10, the C-pillar upper guard plate body 1 is detachably connected to the car body through a connecting assembly. The connecting assembly includes an explosion-proof buckle 6, a D-type buckle 7, two metal buckles 8, and two multi-layer elastic clips 9. The explosion-proof buckle 6, D-type buckle 7, metal buckle 8, and multi-layer elastic clips 9 are all distributed circumferentially along the C-pillar upper guard plate body 1 and are respectively adapted to and engaged with the corresponding installation positions on the car body.
[0031] The explosion-proof buckle 6 has an anchor-shaped top and a three-layer plate structure at the bottom, with the upper plate being arched; for example... Figure 11 As shown, the top of the D-type buckle 7 is a columnar shape with sharp edges, and the bottom has a three-layered overlapping ring structure; as Figure 13 As shown, the metal buckle 8 is formed by bending a metal sheet multiple times to form a U-shaped main frame, and the two ends extend outward with inclined plate-shaped clips; as shown in 12, the top of the multi-layer elastic clip 9 is a flat round protrusion, and the bottom is a three-layer disc structure.
[0032] During operation, workers use explosion-proof clips 6, D-type clips 7, metal clips 8, and multi-layer elastic clips 9 to quickly install the C-pillar upper guard plate body 1 onto the vehicle body. The top anchor-like structure of the explosion-proof clip 6 forms a multi-directional mechanical lock after insertion into the vehicle body mounting hole, preventing the guard plate from detaching during vehicle collisions or vibrations and improving connection safety. The three-layer plate-like structure at the bottom of the explosion-proof clip 6 absorbs impact energy, buffering the vibration transmission between the C-pillar upper guard plate body 1 and the vehicle body, while also enhancing the overall deformation resistance of the clip. The angular columnar structure at the top of the D-type clip 7 ensures precise positioning with the vehicle body mounting position, preventing circumferential rotation or offset after installation and guaranteeing assembly accuracy. The three-layer stacked ring structure at the bottom of the D-type clip 7... The structure provides graded buffering to adapt to stress changes under different working conditions, preventing the buckle from breaking due to excessive force at a single point. The metal buckle 8 uses the rigidity of the metal sheet to support the C-pillar upper guard plate body 1, ensuring that the buckle structure does not undergo plastic deformation during long-term use. The plate-shaped clips of the metal buckle 8 generate radial elastic tension after being inserted into the body sheet metal hole, achieving quick snap-fit fixation and facilitating disassembly and maintenance. The multi-layer elastic clip 9 uses its flat round protrusion structure at the top to interfere with the body mounting hole, forming a pre-tightening force to eliminate the gap between the guard plate and the body, avoiding abnormal noise during driving. The three-layer disc-shaped structure at the bottom of the multi-layer elastic clip 9 can distribute the force, improve the load-bearing capacity of the buckle, and prevent the C-pillar upper guard plate body 1 from loosening due to gravity or external pressure.
[0033] like Figure 1 and Figure 3 As shown, sound-absorbing cotton 10 is bonded to the C-pillar upper guard plate body 1 within the area of the D-type buckle 7; sound-absorbing cotton 21 is bonded to the C-pillar upper guard plate body 1 within the area of the metal buckle 8; during operation, by bonding sound-absorbing cotton 10 and sound-absorbing cotton 21 to the C-pillar upper guard plate body 1, the noise and wind noise caused by vehicle vibration during vehicle operation can be reduced, the overall noise reduction performance of the vehicle can be improved, and the riding experience of rear passengers can be guaranteed.
[0034] Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.
Claims
1. A split-type C-pillar upper guard plate structure for automotive interior trim, characterized in that: The system includes a C-pillar upper guard plate body (1) and a C-pillar upper guard plate decorative ring (2); the C-pillar upper guard plate body (1) has a snap-fit component 1 (3), a snap-fit component 2 (4), and a snap-fit component 3 (5) integrally formed on the side facing the C-pillar upper guard plate decorative ring (2), and the snap-fit component 1 (3), snap-fit component 2 (4), and snap-fit component 3 (5) are distributed at intervals along the circumference of the C-pillar upper guard plate body (1); multiple sets of slots (12) are opened at the four edges of the C-pillar upper guard plate decorative ring (2), and each set of slots (12) is adapted to the snap-fit component 1 (3), snap-fit component 2 (4), and snap-fit component 3 (5), and the snap-fit component 1 (3), snap-fit component 2 (4), and snap-fit component 3 (5) are engaged with the corresponding slots (12); the side of the C-pillar upper guard plate decorative ring (2) away from the C-pillar upper guard plate body (1) is fitted with the edge of the car triangular window (13) with a clearance fit.
2. The split C-pillar upper guard plate structure for automotive interior trim according to claim 1, characterized in that: The first (3) of the snap fastener is a door-shaped buckle. The top of the door-shaped buckle is flat and triangular, and the outer side wall of the door-shaped buckle is provided with tooth-shaped protrusions.
3. The split C-pillar upper guard plate structure for automotive interior trim according to claim 1, characterized in that: The second snap fastener (4) is a single-sided snap fastener, and a toothed protrusion is provided on one side of the top of the single-sided snap fastener.
4. The split C-pillar upper guard plate structure for automotive interior trim according to claim 1, characterized in that: The snap-fit component three (5) is a combination structure of a door-shaped snap-fit and a single-sided snap-fit, and the toothed protrusions of the door-shaped snap-fit and the toothed protrusions of the single-sided snap-fit are arranged in opposite directions to adapt to the different limiting surfaces of the corresponding slots (12).
5. The split C-pillar upper guard plate structure for automotive interior trim according to claim 1, characterized in that: The surface height of the decorative ring (2) on the C-pillar upper guard plate is higher than the surface height of the body (1) on the C-pillar upper guard plate. A transition rounded corner (14) is provided at the mating edge of the decorative ring (2) on the C-pillar upper guard plate and the body (1) on the C-pillar upper guard plate.
6. The split C-pillar upper guard plate structure for automotive interior trim according to claim 1, characterized in that: Limiting units (15) are evenly provided on both sides of the mating edge of the C-pillar upper guard plate decorative ring (2) and the C-pillar upper guard plate body (1). The limiting units (15) are used to limit the inward deformation or outward deformation caused by the mating flange of the C-pillar upper guard plate decorative ring (2) and the C-pillar upper guard plate body (1), so as to control the surface difference between the C-pillar upper guard plate decorative ring (2) and the C-pillar upper guard plate body (1).
7. The split C-pillar upper guard plate structure for automotive interior trim according to claim 1, characterized in that: The C-pillar upper guard plate body (1) is detachably connected to the car body through a connecting component. The connecting component includes an explosion-proof buckle (6), a D-type buckle (7), two metal buckles (8), and two multi-layer elastic clips (9). The explosion-proof buckle (6), D-type buckle (7), metal buckle (8), and multi-layer elastic clips (9) are all distributed circumferentially along the C-pillar upper guard plate body (1) and are respectively adapted to and engaged with the corresponding installation positions on the car body.
8. The split C-pillar upper guard plate structure for automotive interior trim according to claim 7, characterized in that: The top of the explosion-proof buckle (6) is anchor-shaped, the bottom is a three-layer plate structure, and the upper plate is arch-shaped; the top of the D-type buckle (7) is a column with angular edges, and the bottom is a three-layer stacked ring structure; the metal buckle (8) is a U-shaped main frame formed by bending a metal sheet multiple times, and the two ends extend outward with inclined plate-shaped feet; the top of the multi-layer elastic clip (9) is a flat round protrusion, and the bottom is a three-layer disc structure.
9. A split C-pillar upper guard plate structure for automotive interior trim according to claim 7, characterized in that: The C-pillar upper guard plate body (1) is attached with sound-absorbing cotton (10) in the area of the D-type buckle (7).
10. A split-type C-pillar upper guard plate structure for automotive interiors according to claim 7, characterized in that: The C-pillar upper guard plate body (1) is attached with sound-absorbing cotton 2 (11) in the area of the metal buckle (8).