Symmetrical serpentine spring wire suspension

Abstract

The utility model relates to the technical field of automobile seat accessories, especially a symmetrical serpentine steel wire spring device, including a plurality of suspension springs, a plurality of wire harness fixing plates and bolt assemblies, two adjacent suspension springs are connected through the wire harness fixing plate, both ends of the wire harness fixing plate are each equipped with a first bent end and a second bent end, a curved groove is arranged between the first bent end and the second bent end. In the utility model, the wire harness fixing plate clamps the suspension spring through the closure of the first bent end and the second bent end, and the fixed end and the wire harness fixing plate are fixed through the bolt assembly, this connection mode does not have the problems of aging, elastic attenuation and loosening caused by repeated stress, can be evenly dispersed in the whole device, not concentrated in the connection between the suspension spring and the fixing plate, and also avoids abnormal noise caused by the loosening of the suspension spring, and eliminates the stress concentration effect caused by the local high-temperature fusion to form rigid bonding points.

Description

Technical Field

[0001] This utility model relates to the field of automotive seat accessories technology, and more specifically, to a symmetrical serpentine wire suspension spring device. Background Technology

[0002] In automotive seat design, the serpentine wire suspension spring is a core component that supports the seat cushion and transmits comfort. It needs to ensure the support and fatigue resistance of the seat during long-term use through a stable suspension spring connection structure, while also taking into account the wiring harness management function to adapt to the complex circuit layout inside the seat.

[0003] In existing symmetrical serpentine wire suspension spring devices, most use clips or welding to fix the springs. With clips, the plastic or metal clip structure will experience material fatigue due to repeated stress during long-term stress, leading to gradual aging and loss of elasticity at the connection point, resulting in loosening. Welded connections, on the other hand, form rigid joints due to local high-temperature fusion, creating stress concentration at the junction of the spring and the fixed plate. This can cause the connection between the spring and the fixed plate to break or shift due to bumps and vibrations during vehicle operation, reducing seat support and causing abnormal noises due to spring loosening. Therefore, we propose a symmetrical serpentine wire suspension spring device. Utility Model Content

[0004] This invention proposes a symmetrical serpentine wire suspension spring device, which avoids abnormal noise caused by loose suspension springs and eliminates the stress concentration effect caused by local high-temperature fusion forming rigid joint points.

[0005] The technical solution of this utility model is as follows: a symmetrical serpentine wire suspension spring device, comprising multiple suspension springs, multiple wire harness fixing plates, and bolt assemblies. Two adjacent suspension springs are connected by wire harness fixing plates. Each end of the wire harness fixing plate is provided with a first bent end and a second bent end. A bending groove is formed between the first bent end and the second bent end. The end of the second bent end extends outward to form a fixed end. The second bent end bends along the bending groove to close the first bent end and the second bent end, so that the fixed end fits against the top surface of the wire harness fixing plate to clamp the suspension spring. The fixed end is fixed to the wire harness fixing plate by bolt assemblies.

[0006] Preferably, the contact surfaces of the fixed end and the wire harness fixing plate are provided with mounting holes. The bolt assembly includes a fastening bolt and a fastening nut. The end of the fastening bolt passes through the mounting holes on the fixed end and the wire harness fixing plate. The fastening nut is threadedly connected to the fastening bolt to fix the fixed end to the wire harness fixing plate.

[0007] Preferably, the clamping walls of the first and second bends both bulge outward to form multiple anti-slip protrusions.

[0008] Preferably, a plurality of limiting rings are fixedly connected to the outer wall of the suspension spring, and the limiting rings are used to limit the two ends of the first bend and the second bend.

[0009] Preferably, the top of the wire harness fixing plate has multiple wire harness holes and multiple through holes.

[0010] Preferably, each wire harness hole has a wire tube fitted inside, and each end of the wire tube is threaded with an anti-detachment ring, and each inner wall of the wire tube is fixedly connected with a rubber sleeve.

[0011] Preferably, both ends of the suspension spring are bent to form hooks.

[0012] The beneficial effects of this utility model, achieved through the above technical solution, are as follows:

[0013] 1. In this application, the wiring harness fixing plate clamps the suspension spring through the closed clamping of the first and second bends, and is fixed to the wiring harness fixing plate by a bolt assembly using the fixed end. This connection method eliminates the problems of aging, elasticity decay, and loosening caused by repeated stress. The clamping of the suspension spring by the first and second bends makes the entire structure more stable. The flexible connection method using bolt assemblies allows stress to be evenly distributed throughout the device when the vehicle experiences bumps and vibrations during driving, rather than concentrating at the connection between the suspension spring and the fixing plate. This also avoids abnormal noise caused by loose suspension springs and eliminates the stress concentration effect caused by localized high-temperature fusion forming rigid joints.

[0014] 2. In this application, the anti-slip protrusions increase friction when in contact with the suspension spring surface. Whether the seat is subjected to external forces or experiences bumps and vibrations during vehicle operation, the anti-slip protrusions can prevent the suspension spring from sliding at the clamping point to a certain extent, thus improving the stability of the seat support. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a partial structural schematic diagram of the present invention;

[0017] Figure 3 This is a partial structural schematic diagram of the wire harness fixing plate of this utility model;

[0018] Figure 4 This is a schematic diagram of the installation structure of the rubber sleeve of this utility model;

[0019] Figure 5 This utility model Figure 1 Enlarged view of point A in the middle.

[0020] In the diagram: 1. Suspension spring; 2. Hook; 3. Wire harness fixing plate; 4. First bend end; 5. Bending groove; 6. Second bend end; 7. Fixing end; 8. Anti-slip protrusion; 9. Mounting hole; 10. Wire harness hole; 11. Through hole; 12. Conduit; 13. Anti-detachment ring; 14. Rubber sleeve; 15. Limiting ring; 16. Fastening bolt; 17. Fastening nut. Detailed Implementation

[0021] 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 a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0022] like Figures 1-3 As shown, a symmetrical serpentine wire suspension spring device includes multiple suspension springs 1, multiple wire harness fixing plates 3, and bolt assemblies. Both ends of the suspension spring 1 are bent to form hooks 2, which facilitate the connection of the suspension spring 1 to other components such as the seat frame. Adjacent suspension springs 1 are connected by wire harness fixing plates 3. Each end of the wire harness fixing plate 3 has a first bent end 4 and a second bent end 6. A bending groove 5 is formed between the first bent end 4 and the second bent end 6. The end of the second bent end 6 extends outward to form a fixing end 7. The second bent end 6 bends along the bending groove 5, closing the first bent end 4 and the second bent end 6, causing the fixing end 7 to fit against the top surface of the wire harness fixing plate 3, clamping the suspension spring 1. The fixing end 7 is fixed to the wire harness fixing plate 3 by bolt assemblies.

[0023] When a passenger sits on the seat, the suspension spring 1 experiences pressure from the human body. At this time, the suspension spring 1 transmits the force to the wire harness fixing plate 3 connected to it. The closed clamping of the first bent end 4 and the second bent end 6 at both ends of the wire harness fixing plate 3, as well as the bolt fixing of the fixing end 7 to the wire harness fixing plate 3, provides stable support for the suspension spring 1.

[0024] The wire harness fixing plate 3 clamps the suspension spring 1 through the closed clamping of the first bent end 4 and the second bent end 6, and is fixed to the wire harness fixing plate 3 by bolt assembly using the fixed end 7. This connection method eliminates the problems of aging, elasticity decay, and loosening caused by repeated stress. The first bent end 4 and the second bent end 6 clamp the suspension spring 1, making the entire structure more stable.

[0025] The flexible connection method using bolted components allows stress to be evenly distributed throughout the device when the vehicle experiences bumps and vibrations, rather than being concentrated at the connection between the suspension spring and the fixed plate. This also avoids abnormal noises caused by loose suspension springs and eliminates the stress concentration effect caused by local high-temperature fusion forming rigid joints.

[0026] like Figure 2and Figure 3 As shown, mounting holes 9 are provided on the contact surfaces of the fixed end 7 and the wire harness fixing plate 3. The bolt assembly includes a fastening bolt 16 and a fastening nut 17. The end of the fastening bolt 16 passes through the mounting holes 9 on the fixed end 7 and the wire harness fixing plate 3. The fastening nut 17 is threadedly connected to the fastening bolt 16 to fix the fixed end 7 and the wire harness fixing plate 3.

[0027] The end of the fastening bolt 16 passes through the mounting hole 9 on the fixed end 7 and the wire harness fixing plate 3, and is then threadedly connected to the fastening bolt 16 via the fastening nut 17. This connection method facilitates the installation and disassembly of the device compared to welding.

[0028] like Figure 3 As shown, the clamping walls of the first bend 4 and the second bend 6 both bulge outward to form multiple anti-slip protrusions 8. The anti-slip protrusions 8 increase the friction when in contact with the surface of the suspension spring 1. Whether the seat is subjected to external forces or the vehicle experiences bumps and vibrations during driving, the anti-slip protrusions 8 can prevent the suspension spring 1 from sliding at the clamping point to a certain extent, thus improving the stability of the seat support.

[0029] like Figure 4 and Figure 5 As shown, multiple limiting rings 15 are fixedly connected to the outer wall of the suspension spring 1. The limiting rings 15 are used to limit the ends of the first bend 4 and the second bend 6. Multiple wire harness holes 10 are opened on the top of the wire harness fixing plate 3. Multiple through holes 11 are opened on the top of the wire harness fixing plate 3. A wire tube 12 is sleeved on the inner wall of each wire harness hole 10. Anti-detachment rings 13 are threaded to both ends of the wire tube 12. A rubber sleeve 14 is fixedly connected to the inner wall of each wire tube 12.

[0030] The conduit 12 provides comprehensive protection for the wire harness, preventing it from being scratched, bumped, or worn by external objects, thus extending its service life. The anti-detachment ring 13 prevents the conduit 12 from falling out of the wire harness hole 10, ensuring the stability of the conduit 12's position. The rubber sleeve 14 further enhances the protection of the wire harness; its soft texture reduces friction between the wire harness and the inner wall of the conduit 12, preventing damage to the outer sheath or internal wires caused by friction.

[0031] In practical applications of car seats, when a passenger sits on the seat, the suspension spring 1 experiences pressure from the human body. At this time, the suspension spring 1 transmits the force to the connected wiring harness fixing plate 3. The wiring harness fixing plate 3, along with the closed clamping of the first bent end 4 and the second bent end 6, and the bolt fixing of the fixing end 7 to the wiring harness fixing plate 3, provide stable support for the suspension spring 1.

[0032] Specifically, the anti-slip protrusions 8 on the first bend 4 and the second bend 6 are in close contact with the outer wall of the suspension spring 1, increasing the friction and preventing the suspension spring 1 from sliding during clamping to a certain extent. At the same time, the limiting ring 15 on the outer wall of the suspension spring 1 limits and positions the first bend 4 and the second bend 6, ensuring the stability of clamping and the accuracy of installation, and avoiding loosening of the connection due to movement of the clamping parts.

[0033] When the vehicle experiences bumps and vibrations during operation, the stress is transmitted to the wiring harness fixing plate 3 through the suspension spring 1. Since the bolt assembly fixes the fixing end 7 to the wiring harness fixing plate 3, it can resist these stresses and prevent the connection from breaking or shifting.

[0034] It should be noted that the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A symmetrical serpentine wire suspension spring device, comprising multiple suspension springs (1), multiple wire harness fixing plates (3), and bolt assemblies, characterized in that: The two adjacent suspension springs (1) are connected by a wire harness fixing plate (3). The wire harness fixing plate (3) has a first bent end (4) and a second bent end (6) at both ends. A bending groove (5) is provided between the first bent end (4) and the second bent end (6). The end of the second bent end (6) extends outward to form a fixed end (7). The second bent end (6) bends along the bending groove (5) to close the first bent end (4) and the second bent end (6), so that the fixed end (7) fits against the top surface of the wire harness fixing plate (3) to clamp the suspension spring (1). The fixed end (7) is fixed to the wire harness fixing plate (3) by a bolt assembly.

2. The symmetrical serpentine wire suspension spring device according to claim 1, characterized in that: The fixed end (7) and the wire harness fixing plate (3) are both provided with mounting holes (9). The bolt assembly includes a fastening bolt (16) and a fastening nut (17). The end of the fastening bolt (16) passes through the mounting holes (9) on the fixed end (7) and the wire harness fixing plate (3). The fastening nut (17) is threadedly connected to the fastening bolt (16) to fix the fixed end (7) and the wire harness fixing plate (3).

3. The symmetrical serpentine wire suspension spring device according to claim 2, characterized in that: The clamping walls of the first bend (4) and the second bend (6) both bulge outward to form multiple anti-slip protrusions (8).

4. The symmetrical serpentine wire suspension spring device according to claim 3, characterized in that: The outer wall of the suspension spring (1) is fixedly connected with multiple limiting rings (15), which are used to limit the first bend (4) and the second bend (6).

5. The symmetrical serpentine wire suspension spring device according to claim 4, characterized in that: The top of the wire harness fixing plate (3) is provided with multiple wire harness holes (10) and multiple through holes (11).

6. The symmetrical serpentine wire suspension spring device according to claim 5, characterized in that: The inner wall of each wire harness hole (10) is fitted with a wire tube (12), and both ends of the wire tube (12) are threaded with anti-detachment rings (13). The inner wall of each wire tube (12) is fixedly connected with a rubber sleeve (14).

7. The symmetrical serpentine wire suspension spring device according to claim 6, characterized in that: Both ends of the suspension spring (1) are bent to form hooks (2).

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