A side panel structure for automotive seat cushions based on TRB technology
By using TRB technology for differential thickness plate design and flexible rolling process, the problems of weight redundancy, stress concentration and insufficient testing performance of seat cushion side panels are solved, achieving improvements in lightweighting and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 常州新泉汽车零部件有限公司
- Filing Date
- 2025-06-19
- Publication Date
- 2026-06-02
AI Technical Summary
Existing automotive seat cushion side panels suffer from issues such as redundant weight, stress concentration, complex manufacturing processes, and insufficient testing performance, particularly poor performance in ECE R17 standards and dynamic impact tests.
The design employs a differential thickness plate based on TRB technology. Through the double curvature gradient design of the stress zone, rear zone, front zone, and unequal thickness transition zone, combined with flexible rolling process, an integrated side plate structure is formed, which reduces thickness and enhances strength.
It achieves lightweighting of the seat cushion side panels, enhances installation strength and collision safety, improves static strength and dynamic impact performance, reduces welding defects, and meets high safety requirements.
Smart Images
Figure CN224311640U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive seat technology, and in particular to an automotive seat cushion side panel structure based on TRB technology. Background Technology
[0002] Seats are an essential component of automobiles. Current technology for car seat cushions and side panels mostly uses uniformly thick steel plates or welded multi-section plates, which has the following drawbacks:
[0003] 1. Weight redundancy: To meet the local strength requirements of the side panel of the car seat cushion, the overall thickness and weight have increased.
[0004] 2. Stress concentration: Stress concentration is likely to occur around the mounting holes on the side panel of the seat cushion, which can easily lead to breakage after long-term use or impact.
[0005] 3. Insufficient testing performance: In static strength tests (such as ECE R17 standard) and dynamic impact tests of seat back panels, traditional structures have low energy absorption efficiency, which can easily lead to excessive displacement of the seat cushion.
[0006] 4. Complex process: Multi-segment welding process increases manufacturing costs, and the weld area is prone to fatigue weak points. Summary of the Invention
[0007] The purpose of this utility model is to address the shortcomings of the existing technology by providing a car seat cushion side panel structure based on TRB technology.
[0008] The technical solution adopted in this utility model is as follows:
[0009] A car seat cushion side panel structure based on TRB technology includes a side panel, a seat basin, an adjuster, a connecting shaft, and a connecting rod. The side panel comprises two side panels consisting of a seatbelt side panel and two ordinary side panels, or two side panels consisting of a pair of ordinary side panels. The seat basin is welded and fixed to the front ends of the two side panels at both ends. The adjuster is welded to the rear ends of the two side panels at both ends. The connecting rod is fixedly connected to the adjuster at both ends. The connecting shaft is fixedly connected to another part of the rear ends of the two side panels at both ends, forming a frame assembly. The side panel has a stress-bearing area, a rear area, a front area, and a transition area with unequal thickness. The thickness of the stress-bearing area is greater than the thickness of the rear area, and the thickness of the rear area is greater than the thickness of the front area. The stress-bearing area and the rear area smoothly transition through the transition area with unequal thickness, and the stress-bearing area and the front area also smoothly transition through the transition area with unequal thickness.
[0010] The seatbelt side panel has a reinforcing structure.
[0011] The two side plates of the pair of ordinary side plates are symmetrical.
[0012] The thickness of the stress zone, rear zone, and front zone of the seat belt side plate is greater than that of the ordinary side plate.
[0013] The thickness of the stress zone, rear zone, and front zone of the seatbelt side plate are equal to the thickness of the stress zone, rear zone, and front zone of the ordinary side plate, respectively.
[0014] The rear area thickness of the side panel rear area H is 1.5-1.7mm, wherein in the seatbelt side panel, the rear area thickness is 1.6-1.7mm, and in the ordinary side panel, the rear area thickness is 1.5-1.6mm. The stress area thickness of the side panel stress zone is 1.7-1.9mm, wherein in the seatbelt side panel, the stress area thickness is 1.8-1.9mm, and in the ordinary side panel, the stress area thickness is 1.7-1.8mm. The front area thickness of the side panel front area is 1.4-1.6mm, wherein in the seatbelt side panel, the front area thickness is 1.5-1.6mm, and in the ordinary side panel, the front area thickness is 1.4-1.5mm.
[0015] The stress zone and the rear zone are smoothly transitioned by a double curvature gradient design through an unequal thickness transition zone. The stress zone and the front zone are also smoothly transitioned by a double curvature gradient design through an unequal thickness transition zone.
[0016] This utility model relates to a car seat cushion side panel structure based on TRB technology. It is scientifically designed and uses differential thickness plate technology to reasonably reduce the thickness of the cushion side panel. The structure is reasonable, safe and reliable, durable, and has an ideal weight reduction effect. Attached Figure Description
[0017] The accompanying drawings, which are provided to further illustrate this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application.
[0018] Figure 1 A schematic diagram of the three-dimensional structure of the side panel of the seat cushion;
[0019] Figure 2 for Figure 1 A plan view of the E-direction seatbelt side panel component;
[0020] Figure 3 for Figure 1 A schematic diagram of the F-direction ordinary side plate component;
[0021] Figure 4 for Figure 2 Enlarged sectional view along the AA direction;
[0022] Figure 5 for Figure 3Enlarged sectional view of the BB direction;
[0023] In the diagram: Z1 - Seatbelt side panel; Z2 - Ordinary side panel; P - Seat basin; W - Angle adjuster; X - Connecting shaft; Y - Connecting rod; M - Reinforcing structure; L - Stress zone; H - Rear zone; D - Front zone; HD - Rear zone thickness; LD - Stress zone thickness; DD - Front zone thickness; T - Unequal thickness transition zone; T1 - Length of the transition zone between the rear zone and the stress zone; T2 - Length of the transition zone between the front zone and the stress zone. Detailed Implementation
[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described below are merely illustrative of this utility model. Key terms that need attention in these descriptions, including "TRB technology," "unequal thickness transition zone," "hypercurvature gradient design," and "symmetry (mirror image)," are only for the purpose of facilitating and simplifying the description of this utility model, and therefore should not be construed as limiting this utility model.
[0025] This utility model relates to a car seat cushion side panel structure based on TRB technology. The side panel features a thickened stress zone L and a gradient energy absorption scheme in the unequal thickness transition zone T. It is a continuous variable cross-section thin plate obtained through a new rolling process of TRB technology—flexible rolling technology. The thickness is reasonably reduced by using differential thickness plate technology to achieve integrated molding and avoid welding defects. This structure significantly improves the installation strength and collision safety of the seat cushion side panel while ensuring lightweight design. It is particularly suitable for passenger car and commercial vehicle seat systems with high safety requirements.
[0026] This utility model relates to a car seat cushion side panel structure based on TRB technology, such as... Figure 1-3 As shown, it includes a side panel, a seat cushion P, an adjuster W, a connecting shaft X, and a connecting rod Y. Generally, front seats in cars are equipped with seat belts, such as the driver's or front passenger's seats, while rear seats may not. This utility model relates to a car seat cushion side panel structure based on TRB technology. Figure 2-3As shown, in actual use, the seat with a seatbelt has a seatbelt side plate Z1 (usually on the inner side of the seat) connected to the seatbelt device, which usually bears a large force, so it is equipped with a reinforcing rib with a reinforcing structure M. The other side has a regular side plate Z2 (usually on the outer side of the seat and the door side) without this reinforcing structure M. Since the rear seats are often not equipped with seatbelts, both sides of the seat cushion also use regular side plates Z2, forming a symmetrical (mirror image) arrangement. The seat basin P is welded and fixed to the front end of the side plates on both sides of the seat cushion at both ends. The angle adjuster W is welded to the rear end of the side plates on both sides. The connecting rod Y is fixedly connected to the angle adjuster W at both ends. The connecting shaft X is fixedly connected to another part of the rear end of the side plates on both sides at both ends, forming a frame assembly. The side plates of this utility model and the frame assembly include a seatbelt side plate Z1 and a regular side plate Z2, or the side plates of this utility model and the frame assembly include a pair of symmetrical regular side plates Z2. The angle adjuster W is fixedly connected to the seat back and is connected to a control device for adjusting the seat back angle.
[0027] See Figure 4-5As shown, in this embodiment, the integrated side plates (seatbelt side plate Z1 and ordinary side plate Z2) include a stress-bearing area L, a rear area H, a front area D, and a transition area T with unequal thickness. Analysis of the actual stress conditions shows that the stress-bearing area C of the side plate experiences greater stress. The stress-bearing area thickness LD of the stress-bearing area L is greater than the rear area thickness HD of the rear area H, and the rear area thickness HD of the rear area H is greater than the front area thickness DD of the front area D. The length of the side plate in this invention is generally 300-400mm. Generally, the stress-bearing area thickness LD, rear area thickness HD, and front area thickness DD of the seatbelt side plate Z1 are greater than those of the ordinary side plate Z2, respectively. Alternatively, in some cases, for ease of manufacturing, the stress-bearing area thickness LD, rear area thickness HD, and front area thickness DD of the seatbelt side plate Z1 are equal to those of the ordinary side plate Z2, respectively. The side plate has a stress-bearing area thickness LL of 1.7mm-1.9mm, a rear area thickness HD of 1.5mm-1.7mm, and a front area thickness DD of 1.4mm-1.6mm. In this embodiment, the side plate is 350mm long. As a preferred option, in the seatbelt side plate Z1, the stress-bearing area L has a stress-bearing area thickness LD of 1.9mm, the rear area H has a rear area thickness LD of 1.7mm, and the front area D has a front area thickness DD of 1.6mm. The stress-bearing area L and the rear area H are smoothly connected by a transition area T of unequal thickness. The length of their transition area T (the length T1 of the transition area between stress-bearing area L and rear area H) is 20mm. The stress-bearing area L and the front area D are also smoothly connected by a transition area T of unequal thickness. The length of their transition area T (the length T1 of the transition area between stress-bearing area L and rear area H) is 20mm. The transition zone length T2 of the front zone D is 30mm; in the ordinary side plate Z2, the stress zone thickness LD of the stress zone L is 1.8mm, the rear zone thickness LD of the rear zone H is 1.6mm, and the front zone thickness DD of the front zone D is 1.5mm. The stress zone L and the rear zone H are smoothly connected by a transition zone T of unequal thickness, and their transition zone T length (the transition zone length T1 between the stress zone L and the rear zone H) is 20mm. The stress zone L and the front zone D are also smoothly connected by a transition zone T of unequal thickness, and their transition zone T length (the transition zone length T2 between the stress zone L and the front zone D) is 30mm. The side plate is made of high-quality, high-strength hot-rolled pickled steel plate (QSte420TM). The specific design of this embodiment is as follows:
[0028] I. Zoning
[0029] 1. Rear area H:
[0030] The rear area H is equipped with some seat accessories. The edges of the mounting holes are chamfered (R angle 3-5mm) to reduce stress concentration. The rear area thickness HD of the rear area H is 1.5-1.7mm. Specifically, in the seat belt side panel Z1, the rear area thickness HD of its rear area H is 1.6-1.7mm, and in the ordinary side panel Z2, the rear area thickness HD of its rear area H is 1.5-1.6mm.
[0031] 2. Unequal thickness transition zone T:
[0032] The unequal thickness transition zone T is located on both sides of the headrest guide assembly area H, and its length is 100-120 times the thickness difference (for example, when the thickness difference is 0.1mm, the transition zone is 10-12mm long, and the thickness gradually changes from 1.7mm to 1.8mm). The unequal thickness transition zone T adopts a double curvature gradient design to ensure a smooth transition and avoid sudden changes in stiffness.
[0033] 3. Stress zone L:
[0034] The stress-bearing area L is a region with relatively large stress. The stress-bearing area thickness LL of the stress-bearing area L is 1.7-1.9mm. Specifically, in the seat belt side plate Z1, the stress-bearing area thickness LL of the stress-bearing area L is 1.8-1.9mm, and in the ordinary side plate Z2, the stress-bearing area thickness LL of the stress-bearing area L is 1.7-1.8mm.
[0035] 4. Anterior region D:
[0036] The front area thickness DD of the front area D is 1.4-1.6mm. In the seat belt side plate Z1, the front area thickness DD of the front area D is 1.5-1.6mm, and in the ordinary side plate Z2, the front area thickness DD of the front area D is 1.4-1.5mm. Thinning the front area D is beneficial to achieving weight reduction.
[0037] II. Application of TRB Technology
[0038] 1. If two sets of side panels are symmetrically arranged along the length of the sheet material, the material utilization rate is ≥70%;
[0039] 2. Rolling tolerance is controlled within ±0.05mm;
[0040] 3. After hot stamping, the yield strength of the sheet metal is ≥1200MPa and the tensile strength is ≥1600MPa.
[0041] III. Testing Performance Advantages
[0042] 1. Static strength test of side panel assembly: The radial reinforcing rib design of the side panel increases the tensile strength of the mounting point by 30% and reduces the displacement by 40%;
[0043] 2. Dynamic impact test: The energy absorption ratio of the uneven thickness transition zone T reaches 60%, and the peak impact force is reduced by 15% (meeting the C-NCAP 5-star requirements).
[0044] 3. Fatigue test: The radial reinforcing rib design in relevant parts increases the cycle life by 50% and prevents the propagation of peripore cracks.
[0045] This utility model relates to a car seat cushion side panel structure based on TRB technology. The weight reduction test of the seatbelt side panel Z1 alone shows that its thickness, measured by CATIA software, was originally 0.895 kg. After using the differential thickness plate technology of this utility model to reduce the thickness, the measured weight is 0.726 kg, representing a weight reduction of approximately 19%. The ordinary side panel Z2 also shows a good weight reduction effect.
[0046] The above description is only a general embodiment of this utility model. For those skilled in the art, there are various other embodiments with modifications and variations, which will not be elaborated here. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model are included within the protection scope claimed by this utility model.
Claims
1. A side panel structure for a car seat cushion based on TRB technology, comprising a side panel, a seat pan (P), an adjuster (W), a connecting shaft (X), and a connecting rod (Y), characterized in that, The side panel includes two side panels of a safety belt side panel (Z1) and a regular side panel (Z2), or two side panels of a pair of regular side panels (Z2). The two ends of the seat (P) are welded and fixed to the front end of the two side panels. The angle adjuster (W) is welded to the rear end of the two side panels. The two ends of the connecting rod (Y) are fixedly connected to the angle adjuster (W). The two ends of the connecting shaft (X) are fixedly connected to another part of the rear end of the two side panels to form a frame assembly. The side panel is provided with a stress zone (L), a rear zone (H), a front zone (D), and a transition zone (T) of unequal thickness. The stress zone thickness (LD) of the stress zone (L) is greater than the rear zone thickness (HD) of the rear zone (H). The rear zone thickness (HD) of the rear zone (H) is greater than the front zone thickness (DD) of the front zone (D). The stress zone (L) and the rear zone (H) are smoothly transitioned through the transition zone (T). The stress zone (L) and the front zone (D) are also smoothly transitioned through the transition zone (T).
2. The automotive seat cushion side panel structure based on TRB technology according to claim 1, characterized in that, The seatbelt side panel (Z1) is provided with a reinforcing structure (M).
3. The automotive seat cushion side panel structure based on TRB technology according to claim 1, characterized in that, The two side plates of the pair of ordinary side plates (Z2) are symmetrical.
4. The automotive seat cushion side panel structure based on TRB technology according to claim 1, characterized in that, The thickness of the stress zone (LD), rear zone (HD), and front zone (DD) of the seat belt side plate (Z1) is greater than that of the ordinary side plate (Z2).
5. The automotive seat cushion side panel structure based on TRB technology according to claim 1, characterized in that, The thickness of the stress zone (LD), rear zone (HD), and front zone (DD) of the seat belt side plate (Z1) are equal to the thickness of the stress zone (LD), rear zone (HD), and front zone (DD) of the ordinary side plate (Z2), respectively.
6. The automotive seat cushion side panel structure based on TRB technology according to claim 1, characterized in that, The rear area thickness (HD) of the rear area (H) of the side plate is 1.5mm-1.7mm, the stress area thickness (LL) of the stress area (L) of the side plate is 1.7mm-1.9mm, and the front area thickness (DD) of the front area (D) of the side plate is 1.4mm-1.6mm.
7. The automotive seat cushion side panel structure based on TRB technology according to claim 1, characterized in that, In the seatbelt side panel (Z1), the rear area thickness (HD) of its rear zone (H) is 1.6mm-1.7mm. In the ordinary side panel (Z2), the rear area thickness (HD) of its rear zone (H) is 1.5mm-1.6mm. In the seatbelt side panel (Z1), the stress zone thickness (LL) of its stress zone (L) is 1.8mm-1.9mm. In the ordinary side panel (Z2), the stress zone thickness (LL) of its stress zone (L) is 1.7mm-1.8mm. In the seatbelt side panel (Z1), the front area thickness (DD) of its front zone (D) is 1.5mm-1.6mm. In the ordinary side panel (Z2), the front area thickness (DD) of its front zone (D) is 1.4mm-1.5mm.
8. The automotive seat cushion side panel structure based on TRB technology according to claim 1, characterized in that, The stress zone (L) and rear zone (H) are smoothly transitioned by a double curvature gradient design through an unequal thickness transition zone (T). The stress zone (L) and front zone (D) are also smoothly transitioned by a double curvature gradient design through an unequal thickness transition zone (T).