A hidden four-bar linkage and transparent cover plate structure for automotive interior and exterior trim

CN224396248UActive Publication Date: 2026-06-23MAGNA STEYR AUTOMOTIVE TECHNOLOGY (SHANGHAI) LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
MAGNA STEYR AUTOMOTIVE TECHNOLOGY (SHANGHAI) LTD
Filing Date
2025-05-13
Publication Date
2026-06-23

AI Technical Summary

Technical Problem

Existing automotive interior and exterior storage box lid opening mechanisms take up a lot of space, affect aesthetics, and have inconsistent designs. Traditional four-bar linkage mechanisms are visibly unsightly.

Method used

Design a hidden four-bar linkage and transparent cover structure, which adopts magnesium-aluminum alloy linkage, combines two-color injection molded transparent and non-transparent areas, integrates LED backlight, has a flexible driving method, and the linkage mechanism is completely covered by the cover.

Benefits of technology

It achieves a compact and aesthetically pleasing storage cover design, is lightweight and fatigue-resistant, suitable for different car models, and enhances the sense of technology.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224396248U_ABST
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Abstract

The utility model relates to the technical field of automobile parts, specifically is a kind of automobile interior and exterior trim hidden four-bar linkage and transparent cover plate structure, including storage box lid, storage box and connecting rod mechanism, storage box lid is set on storage box, connecting rod mechanism is connected between storage box lid and storage box, storage box lid is opened or closed by connecting rod mechanism, the periphery of storage box lid is equipped with lid non-transparent area, lid non-transparent area is used to fix connecting rod mechanism, connecting rod mechanism is arranged below lid non-transparent area, and it is hidden by lid non-transparent area to realize, strip-shaped gap is set to the both sides of storage box, and strip-shaped gap provides movement avoiding space for connecting rod mechanism;The utility model compared with prior art is a kind of hidden four-bar linkage mechanism and transparent cover plate design, completely invisible on vision, suitable for the intelligent opening and closing control of the area such as automobile interior console, storage box, fragrance system or instrument panel and exterior trim, and it has the demand of functional and transparent part.
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Description

[Technical Field]

[0001] This utility model relates to the field of automotive parts technology, specifically to a hidden four-link structure for automotive interior and exterior trim and a transparent cover plate. [Background Technology]

[0002] With the increasing popularity of automobiles, especially electric vehicles, the storage space available in cars is growing, leading to a greater demand for related storage covers. Currently, the opening mechanisms for interior and exterior storage box covers are mainly single-axis hinge flip-up or modular sliding drawer-style openings. These structures require a certain amount of interior space to accommodate the opening and closing of the covers, and they also disrupt the overall design aesthetics of the interior. Furthermore, the linkage mechanism in traditional four-bar linkage mechanisms, such as those found in exterior electric charging port covers, is visible and detracts from the overall appearance.

[0003] Currently, some interior and exterior storage or lid opening mechanisms on the market have the following main shortcomings:

[0004] (1) The glove box opens by a single-axis hinge flipping backward and a modular slide rail drawer, while the center console armrest opens by a single-axis hinge flipping upward. All of these occupy a lot of operating / movement space.

[0005] (2) The electric charging port cover of the exterior is opened by a four-bar linkage downwards, and the linkage is visible after it is opened, which affects the aesthetics.

[0006] To address the aforementioned pain points, and combining lightweight and concealed design concepts, a solution that integrates a concealed four-bar linkage with a transparent cover plate for both interior and exterior trim would be of great significance. This solution would enhance the technological feel of both interior and exterior trim and achieve a unity of function and aesthetics through structural optimization and material innovation. [Utility Model Content]

[0007] The purpose of this invention is to provide a hidden four-link structure for the interior and exterior of automobiles and a transparent cover plate to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, a concealed four-link and transparent cover structure for automotive interior and exterior trim is designed, including a storage box cover 1, a storage box 2, and a linkage mechanism 3. The storage box cover 1 is placed on the storage box 2, and the linkage mechanism 3 connects the storage box cover 1 and the storage box 2. The storage box cover 1 is opened or closed through the linkage mechanism 3. The periphery of the storage box cover 1 is provided with a non-transparent area 1-1, which is used to fix the linkage mechanism 3. The linkage mechanism 3 is arranged below the non-transparent area 1-1 and is concealed by the non-transparent area 1-1 to achieve concealment. The storage box 2 has strip-shaped notches 2-1 on both sides, which provide movement clearance space for the linkage mechanism 3.

[0009] Furthermore, the linkage mechanism 3 includes a rocker arm 3-7, a first connecting rod 3-3, and a second connecting rod 3-1 and a third connecting rod 3-2 connected to both ends of the first connecting rod 3-3. The rocker arm 3-7 is used to provide power. One end of the rocker arm 3-7 is connected to the outside of the storage box 2 and rotates. The other end of the rocker arm 3-7 is connected to the storage box lid 1. The first connecting rod 3-3 is connected in the storage box lid 1. The second connecting rod 3-1 and the third connecting rod 3-2 are arranged symmetrically on the left and right, and the other ends of the second connecting rod 3-1 and the third connecting rod 3-2 can be rotatably connected to the outside of the storage box 2.

[0010] Furthermore, the middle part of the storage box lid 1 is set as a transparent area 1-2 or a non-transparent area. The non-transparent area 1-1 of the lid and the transparent area 1-2 or the non-transparent area in the middle part of the storage box lid 1 are integrally formed by two-color injection molding and are seamlessly connected.

[0011] Furthermore, the non-transparent area 1-1 of the lid is made of PC / ABS material, and the transparent area 1-2 of the storage box lid 1 is made of high-transmittance PC material with a light transmittance of ≥90%.

[0012] Furthermore, LED backlighting is integrated on the transparent areas 1-2 of the storage box lid 1, thereby enhancing the sense of technology.

[0013] Furthermore, the linkage mechanism 3 uses a magnesium-aluminum alloy linkage, which is lightweight (weight reduced by 35%) and fatigue resistant.

[0014] Furthermore, the rocker arm 3-7 is mechanically driven, and the mechanical drive structure uses a stainless steel spring, gear damping 3-5 and push switch 3-4 to achieve smooth opening and closing.

[0015] Furthermore, the rocker arm 3-7 is electrically driven, and the electrically driven structure uses a motor actuator and a gear set to achieve smooth opening and closing.

[0016] Compared with the prior art, this utility model has the following advantages:

[0017] (1) This utility model fully optimizes the storage cover, making the space compact, occupying little layout space, and the system drive mode flexible, covering the needs of all scenarios from economy to luxury models.

[0018] (2) This utility model has the advantages of simple and reliable structure, reasonable layout, good process feasibility, simple and reasonable installation and assembly, superior performance and cost saving.

[0019] (3) This utility model adopts a hidden four-bar linkage mechanism. The linkage mechanism is completely covered by the non-transparent area of ​​the cover throughout the process and only moves through a narrow notch when the cover is opened, making it completely invisible visually.

[0020] (4) The linkage mechanism of this utility model adopts a magnesium-aluminum alloy linkage, which is lightweight (weight reduced by 35%) and fatigue resistant, and is compatible with spring / motor drive;

[0021] (5) The transparent cover of this utility model adopts a partitioned design. The non-transparent area is made of PC / ABS material and is seamlessly combined with the transparent area through two-color injection molding for fixing the linkage mechanism.

[0022] (6) The transparent area of ​​the transparent cover of this utility model is made of high-transparency PC material with a light transmittance of ≥90%, and can be integrated with LED backlight to enhance the sense of technology;

[0023] In summary, this utility model is a concealed four-bar linkage mechanism and transparent cover design, which is suitable for intelligent opening and closing control of areas such as the center console, storage box, fragrance system, instrument panel, and exterior trim of automobile interiors. It meets the requirements of both functionality and transparent parts, and is worthy of widespread application. [Image Description]

[0024] Figure 1a This is a schematic diagram of the structure of this utility model (closed state);

[0025] Figure 1b This is a schematic diagram of the structure of this utility model (open state);

[0026] Figure 1c This is a schematic diagram of the motion trajectory of the linkage mechanism of this utility model;

[0027] Figure 2 This is a schematic diagram of the assembly structure of this utility model;

[0028] Figure 3 This is a three-dimensional structural diagram of the storage box lid and linkage mechanism of this utility model;

[0029] Figure 4 yes Figure 3 A schematic diagram of the planar structure;

[0030] Figure 5 This is a schematic diagram of the mechanical drive structure of this utility model;

[0031] Figure 6 This is a schematic diagram of the structure of the electric drive of this utility model;

[0032] In the diagram: 1. Storage box lid; 2. Storage box; 3. Linkage mechanism; 1-1. Non-transparent area of ​​the lid; 1-2. Transparent area; 2-1. Strip-shaped notch; 3-1. Link 2; 3-2. Link 3; 3-3. Link 1; 3-4. Push switch; 3-5. Gear damping; 3-6. Screw fixing; 3-7. Rocker arm. [Detailed Implementation]

[0033] The present invention will be further described below with reference to the accompanying drawings:

[0034] like Figure 1a , Figure 1b , Figure 1c as well as Figures 2 to 6 As shown, this utility model provides a hidden four-link and transparent cover structure for automotive interior and exterior trim, including a storage box cover 1, a storage box 2, and a linkage mechanism 3. The storage box cover 1 covers the storage box 2, and the linkage mechanism 3 connects the storage box cover 1 and the storage box 2. The storage box cover 1 is opened or closed through the linkage mechanism 3. The linkage mechanism 3 is made of magnesium-aluminum alloy, which is lightweight (weight reduced by 35%) and fatigue resistant. The periphery of the storage box cover 1 is provided with a non-transparent area 1-1, which is used to fix the linkage mechanism 3. The linkage mechanism 3 is arranged below the non-transparent area 1-1 and is covered by the non-transparent area. Area 1-1 is concealed to achieve hiding. The storage box 2 has strip-shaped notches 2-1 on both sides, which provide movement avoidance space for the linkage mechanism 3. The middle part of the storage box lid 1 is set as a transparent area 1-2 or a non-transparent area. The non-transparent area 1-1 of the lid and the transparent area 1-2 or non-transparent area in the middle of the storage box lid 1 are integrally molded by two-color injection molding and are seamlessly connected. The non-transparent area 1-1 of the lid is made of PC / ABS material, and the transparent area 1-2 of the storage box lid 1 is made of high-transmittance PC material with a light transmittance of ≥90%. The transparent area 1-2 of the storage box lid 1 is integrated with LED backlight to enhance the sense of technology.

[0035] The linkage mechanism 3 includes a rocker arm 3-7, a first connecting rod 3-3, and second connecting rods 3-1 and third connecting rods 3-2 connected to both ends of the first connecting rod 3-3. The rocker arm 3-7 provides power, with one end connected to the outside of the storage box 2 and rotating, and the other end connected to the storage box lid 1. The first connecting rod 3-3 is connected inside the storage box lid 1. The second connecting rod 3-1 and the third connecting rod 3-2 are symmetrically arranged, and the other ends of both the second connecting rod 3-1 and the third connecting rod 3-2 can be rotatably connected to the outside of the storage box 2. The rocker arm 3-7 can be mechanically driven, using a stainless steel spring, gear damping 3-5, and a push switch 3-4 to achieve smooth opening and closing. Alternatively, the rocker arm 3-7 can be electrically driven, using a motor actuator and gear set for smooth opening and closing. This flexible driving method can cover the needs of all scenarios, from economy cars to luxury cars.

[0036] This utility model relates to a concealed four-bar linkage mechanism and a transparent cover design, suitable for intelligent opening and closing control of areas such as the center console, storage box, fragrance system, instrument panel, and exterior trim in automotive interiors, meeting both functionality and the need for transparent components. This utility model employs a concealed four-bar linkage mechanism, which is entirely hidden by the non-transparent area of ​​the cover, moving only through a narrow notch (5mm) when the cover is opened, making it visually completely invisible. It uses magnesium-aluminum alloy linkages, which are lightweight (35% weight reduction) and fatigue-resistant, and are compatible with spring / motor drives. The transparent cover has a partitioned design. The non-transparent area 1-1 is made of PC / ABS material and seamlessly integrated with the transparent area 1-2 through two-color injection molding to fix the linkage mechanism. The transparent area 1-2 is made of high-transparency PC material with a light transmittance ≥90%, which can integrate LED backlighting to enhance the technological feel. The drive methods are diverse, including a mechanical drive using a spring + push-push structure, such as... Figure 5 As shown, a single press turns the device on / off, suitable for low-cost scenarios; the electric drive uses a motor actuator + gear set, as shown... Figure 6 As shown, it supports voice / touch commands and is compatible with high-end car models.

[0037] like Figure 1a , Figure 1b , Figure 1c The diagram shown is a schematic diagram of the overall structure of the storage box and the storage box lid of this utility model (closed / open state), and shows the movement trajectory of the linkage mechanism 3 hidden under the non-transparent area 1-1.

[0038] like Figure 2 The diagram shown is an assembly diagram of the hinge shaft end in this utility model. The storage box cover acts as a connecting rod, and the storage box acts as a frame.

[0039] like Figure 3 The image shown is a detailed diagram of the partitions in the transparent storage box lid, including opaque areas, transparent areas, and linkage mechanisms.

[0040] like Figure 4 As shown, the opaque area completely covers the linkage mechanism, and the storage box lid also completely covers the linkage mechanism during movement, thus achieving a hidden structure.

[0041] The implementation steps of this utility model are as follows:

[0042] (1) Cover manufacturing process: The non-transparent area (PC / ABS) and the transparent area (PC) are integrally molded by two-color injection molding to ensure interface strength (peel force ≥50N / cm) and sealing performance.

[0043] (2) The storage box structure is optimized, with narrow notches (5mm ± 0.2mm wide) on both sides to provide space for the linkage mechanism to move and avoid visual exposure; the storage box can also be a component such as a car fragrance system.

[0044] (3) Drive system adaptation

[0045] Mechanical type: It uses a stainless steel spring (life ≥ 100,000 cycles) in conjunction with a damper and a push-push switch to achieve smooth opening and closing;

[0046] Electric type: motor actuator with gear transmission, noise ≤35dB, supports LIN control.

[0047] (4) Assembly installation: The storage box assembly is fixed to the relevant peripheral parts by fasteners, with an installation gap of ≤0.5mm, so as to ensure seamless connection with the surrounding parts.

[0048] The contents not described in detail in this specification are existing technologies known to those skilled in the art. The standard parts used can be purchased from the market, and the irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the existing technology. The machinery, parts and equipment adopt conventional models in the existing technology, and the circuit connection adopts conventional connection methods in the existing technology, which will not be described in detail here.

[0049] This utility model is not limited to the above-described embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of this utility model shall be considered equivalent substitutions and shall be included within the protection scope of this utility model.

Claims

1. A concealed four-link suspension system and transparent cover structure for automotive interior and exterior trim, characterized in that: The device includes a storage box lid (1), a storage box (2), and a linkage mechanism (3). The storage box lid (1) is placed on the storage box (2). The linkage mechanism (3) connects the storage box lid (1) and the storage box (2). The storage box lid (1) is opened or closed by the linkage mechanism (3). The storage box lid (1) has a non-transparent area (1-1) around its perimeter. The non-transparent area (1-1) is used to fix the linkage mechanism (3). The linkage mechanism (3) is arranged below the non-transparent area (1-1) and is covered by the non-transparent area (1-1) to achieve concealment. The storage box (2) has strip-shaped notches (2-1) on both sides. The strip-shaped notches (2-1) provide movement avoidance space for the linkage mechanism (3).

2. The concealed four-link suspension and transparent cover structure for automotive interior and exterior trim as described in claim 1, characterized in that: The linkage mechanism (3) includes a rocker arm (3-7), a first connecting rod (3-3), and a second connecting rod (3-1) and a third connecting rod (3-2) connected to both ends of the first connecting rod (3-3). The rocker arm (3-7) is used to provide power. One end of the rocker arm (3-7) is connected to the outside of the storage box (2) and rotates. The other end of the rocker arm (3-7) is connected to the lid (1) of the storage box. The first connecting rod (3-3) is connected in the lid (1) of the storage box. The second connecting rod (3-1) and the third connecting rod (3-2) are arranged symmetrically on the left and right, and the other ends of the second connecting rod (3-1) and the third connecting rod (3-2) can be rotatably connected to the outside of the storage box (2).

3. The concealed four-link suspension and transparent cover structure for automotive interior and exterior trim as described in claim 1, characterized in that: The middle part of the storage box lid (1) is set as a transparent area (1-2) or a non-transparent area. The non-transparent area (1-1) of the lid and the transparent area (1-2) or non-transparent area in the middle part of the storage box lid (1) are integrally formed by two-color injection molding and are seamlessly connected.

4. The concealed four-link suspension and transparent cover structure for automotive interior and exterior trim as described in claim 3, characterized in that: The non-transparent area (1-1) of the lid is made of PC / ABS material, and the transparent area (1-2) of the storage box lid (1) is made of high-transmittance PC material with a light transmittance of ≥90%.

5. The concealed four-link suspension and transparent cover structure for automotive interior and exterior trim as described in claim 4, characterized in that: LED backlighting is integrated on the transparent area (1-2) of the storage box lid (1).

6. The concealed four-link suspension and transparent cover structure for automotive interior and exterior trim as described in claim 1, characterized in that: The linkage mechanism (3) adopts a magnesium-aluminum alloy linkage.

7. The concealed four-link suspension and transparent cover structure for automotive interior and exterior trim as described in claim 2, characterized in that: The rocker arm (3-7) is mechanically driven. The mechanical drive structure uses a stainless steel spring, gear damping (3-5), and push switch (3-4) to achieve smooth opening and closing.

8. The concealed four-link suspension and transparent cover structure for automotive interior and exterior trim as described in claim 2, characterized in that: The rocker arm (3-7) is electrically driven. This electrically driven structure uses a motor actuator and a gear set to achieve smooth opening and closing.