A shock-absorbing and energy-absorbing structure installed between the upper rail of the slide rail and the Raiser bracket.
By installing a shock-absorbing and energy-absorbing structure consisting of a rivet-bolt composite and rubber blocks between the upper rail of the slide rail and the Raiser bracket, the problems of poor seat shock absorption and high cost in the prior art are solved, achieving more efficient vibration energy absorption and seat stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGCHUN FAWSN RES & DEV CO LTD
- Filing Date
- 2025-07-25
- Publication Date
- 2026-07-31
AI Technical Summary
In the existing technology, the shock absorption structure of the third row of seats in MPVs or SUVs is complex and costly, and cannot effectively absorb vibration energy, affecting ride comfort.
The structure employs a shock-absorbing and energy-absorbing design using a combination of rivets and rubber blocks. The rubber blocks are installed between the upper rail of the slide rail and the Raiser bracket via the rivet and bolt combination. The compression energy absorption of the rubber blocks is used to reduce vibration energy. The structure is simple and low in cost.
It achieves a 15%-20% improvement in shock absorption capacity, ensuring seat installation stability while reducing costs and improving ride comfort.
Smart Images
Figure CN224576515U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of automotive seat technology, specifically relating to a shock-absorbing and energy-absorbing structure installed between the upper rail of the slide rail and the Raiser bracket. Background Technology
[0002] In MPVs or SUVs, the third-row seats are located directly above the rear axle. Vibration energy from the road surface is transferred to the chassis, and the tires, suspension, and floor absorb most of the vibration energy. However, some energy is still transferred to the seats. Due to the presence of batteries or other body structures under the seats, the distance from the R-point of the third-row seats to the floor (i.e., the mounting point) is very small, and the seat cushion foam is relatively thin, limiting its ability to absorb vibration energy. If suspension springs are installed, they will deform and touch the floor, making it impossible to absorb energy.
[0003] Chinese patent CN 119953254 A discloses an axial damping mechanism for a car seat and its automotive seat, including a stepped bolt, an upper connecting bracket, an axial hydraulic damping sleeve, a damping fixing plate, a spring, a baffle, and a lock nut. The upper connecting bracket, damping fixing plate, and baffle are all provided with through holes for the stepped bolt to pass through. A bushing is press-fitted into the through hole of the upper connecting bracket. The stepped bolt passes vertically through the bushing, axial hydraulic damping sleeve, damping fixing plate, baffle, and spring in sequence, and is locked by the lock nut. The stepped bolt and the axial hydraulic damping sleeve are interference-fitted, and the stepped surface of the stepped bolt abuts against the upper surface of the baffle. This mechanism can effectively absorb and disperse the vibration energy generated during vehicle operation, improve the seat modal values, reduce seat vibration, and enhance vehicle NVH performance and passenger comfort. However, its overall structure is complex, and due to the use of hydraulic damping, the cost is high. Utility Model Content
[0004] In view of the shortcomings and deficiencies of the existing technology, the purpose of this utility model is to provide a shock-absorbing and energy-absorbing structure installed between the upper rail of the slide rail and the Raiser bracket. The structure is simple, easy to assemble, and uses low-cost rubber shock absorbers, which has a cost advantage and improves the shock absorption capacity by about 15%-20%.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A shock-absorbing and energy-absorbing structure installed between the upper rail of a slide rail and a Raiser bracket includes a rivet-screw composite, a rubber block, and a nut. The rivet-screw composite includes a riveting portion, a guide portion, and a threaded connection portion. The riveting portion is fixed to the upper rail of the slide rail by press-fitting. The guide portion is disposed between the riveting portion and the threaded connection portion, and its diameter is larger than that of both portions. A stepped surface is formed at the connection point between the guide portion and the riveting portion / threaded connection portion. The threaded connection portion has an external thread that matches the nut. The rubber block has a through hole at a position opposite to the guide portion. The rubber block is installed at the guide portion, with its bottom surface abutting against the upper rail of the slide rail and its top surface abutting against the Raiser bracket. The Raiser bracket is locked and fixed to the threaded connection portion by a nut, with a pre-existing gap between it and the guide portion.
[0007] As a preferred embodiment of this invention, shock-absorbing and energy-absorbing structures are arranged at the four or more foot positions of the third-row seat mounting points in MPVs or SUVs to absorb excitation energy from the floor.
[0008] As a preferred embodiment of this utility model, the shock-absorbing and energy-absorbing structure includes two spaced-apart riveting composites. The riveting portions of the two riveting composites are fixed to the upper rail of the slide rail by press riveting. The rubber block has a through hole at a position opposite to the guide portion of the two riveting composites. The Raiser bracket has a through hole at a position opposite to the threaded connection portion of the two riveting composites. The Raiser bracket is locked and fixed to the two riveting composites by two nuts.
[0009] As a preferred embodiment of this utility model, the rivet and screw composite component is an integral structure, and the upper part of the seat structure is mounted on the Raiser bracket.
[0010] Advantages and beneficial effects of this utility model
[0011] 1. This utility model designs a rivet-screw composite component, adding a rubber block energy-absorbing structure between the upper rail of the slide rail and the Raiser bracket. The rubber block has holes, and the rivet-screw composite component connects to the upper rail of the slide rail and the Raiser bracket at both ends through the through holes on the rubber block. The rivet-screw composite component is fixed to the upper rail of the slide rail by press riveting, and the Raiser bracket and the rivet-screw composite component are firmly secured by nuts. This method can achieve shock absorption and energy reduction while ensuring the stability of the seat installation.
[0012] 2. The energy-absorbing structure provided by this utility model, after the upper rail of the slide rail, the rubber block and the Raiser bracket are fastened by the rivet composite, the vehicle floor transmits the vibration excitation to the slide rail. The slide rail receives the upward acceleration excitation input from the vehicle body, and the upper rail of the slide rail will move upward, pushing the rubber block to move upward. The rubber block transmits the acceleration excitation to the Raiser bracket. Since the Raiser bracket bears the entire weight of the seat and the passenger, and the weight is relatively large, the rubber block will be compressed at this time, absorbing part of the vibration energy input from the vehicle body, thereby achieving shock absorption and energy reduction.
[0013] 3. This utility model features a self-designed rivet-screw composite component, which differs from existing stepped bolts. The use of this composite component ensures the stable installation of the seat, while using low-cost rubber to achieve shock absorption. Its overall structure is simple, easy to assemble, and has a cost advantage. It also has a good shock absorption effect, improving shock absorption capacity by 15%-20%. Attached Figure Description
[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.
[0015] Figure 1 This is a schematic diagram of the shock absorption and energy absorption structure of this utility model arranged at four mounting points on the seat and the vehicle body. Figure 1 ;
[0016] Figure 2 This is a schematic diagram of the shock absorption and energy absorption structure of this utility model arranged at four mounting points on the seat and the vehicle body. Figure 2 ;
[0017] Figure 3 This utility model Figure 2 Sectional view along AA;
[0018] Figure 4 This is a schematic diagram of the assembly of the rivet-screw composite component and the upper rail of the slide rail, wherein the dotted line represents the state of the rivet-screw composite component before riveting. Detailed Implementation
[0019] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be noted that in the description of this utility model, the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0020] like Figures 1 to 4 As shown, this embodiment provides a shock-absorbing and energy-absorbing structure I installed between the upper rail of the slide rail and the Raiser bracket, including a rivet-screw composite 1, a rubber block 2, and a nut 3; wherein, the rivet-screw composite 1 includes a riveting part 11, a guide part 12, and a threaded connection part 13; the riveting part 11 is fixed to the upper rail of the slide rail 4 by a press-fitting method; the guide part 12 is disposed between the riveting part 11 and the threaded connection part 13 (M10 or M8), and the diameter of the guide part 12 is larger than that of the riveting part 11 and the threaded connection part 13. Part 13 has a stepped surface at the connection with riveting part 11 and threaded connection part 13. The threaded connection part 13 is machined with an external thread that matches the nut 3. The rubber block 2 has a through hole (unmarked) at a position opposite to the guide part 12. The rubber block 2 is installed at the guide part 12, with its bottom surface abutting against the upper rail 4 of the slide rail and its top surface abutting against the Raiser bracket 5. The Raiser bracket 5 is locked and fixed to the threaded connection part 13 by the nut 3, and a gap is reserved between it and the guide part 12.
[0021] Continue as Figure 1 , Figure 2 As shown in this embodiment, the above-mentioned shock-absorbing and energy-absorbing structures are arranged at the four foot positions of the third-row seat mounting points in the MPV or SUV to absorb the excitation energy from the floor.
[0022] In this embodiment, the rivet-screw composite 1 is an integral structure, and the seat is installed on the Raiser bracket 5.
[0023] Furthermore, in this embodiment, the shock absorption and energy absorption structure I includes two spaced-apart riveting composites 1. The riveting portions 11 of the two riveting composites 1 are fixed to the upper rail 4 of the slide rail by press riveting. The rubber block 2 has a through hole at a position opposite to the guide portion 12 of the two riveting composites 1. The Raiser bracket 5 has a through hole (unmarked) at a position opposite to the threaded connection portion 13 of the two riveting composites 1. The Raiser bracket 5 is locked and fixed to the two riveting composites 1 by two nuts 3.
[0024] During actual assembly, first connect the riveting part 11 of the rivet-screw composite 1 to the upper rail 4 of the slide rail by press riveting; then align the through hole on the rubber block 2 with the guide part 12 of the rivet-screw composite 1; then install the Raiser bracket, and finally tighten the nut (M8 or M10) to lock the rubber block 2, the rivet-screw composite 1, and the upper rail 4 to the specified torque (M8: 35Nm+ / -10%, M10: 45Nm+ / -10%); follow the same procedure to assemble the shock absorption and energy absorption structures at the other 3 locations on the seat.
[0025] In this embodiment, the rubber block 2 has the following specifications: 60mm (length) * 20mm (width) * 20mm (thickness), with a Shore hardness of 60-80A. During actual installation, the appropriate type of rubber material is selected based on the operating conditions for shock absorption and energy dissipation; it is not limited to the specifications described above.
[0026] Simplified calculation of vibration absorption characteristics of shock-absorbing and energy-absorbing structures:
[0027] 1. In a damping system, the total damping force F is equal to the elastic force F. k With damping force F c The sum, expressed as: F = F k +F c =k×x+c×v, k: elastic stiffness of the rubber block, x: displacement of the rubber block, c: damping coefficient, v: velocity;
[0028] 2. Assuming the elastic stiffness of a 60 (length) * 20 (width) * 20 (thickness) rubber block is k = 1000 N / m, the damping coefficient is c = 50 N * s / m, the displacement of the rubber block is x = 0.01 m, and the velocity is v = 0.1 m / s; then the total damping force F = k × x + c × v = 1000 × 0.01 + 50 × 0.1 = 15 N, and the damping force provided by 4 rubber blocks is approximately 15 N × 4 = 60 N;
[0029] 3. Shock absorption energy: Based on neoprene rubber, the maximum energy absorption per cycle is 0.5 J / cm. 3 Volume of each rubber block: 10cm 3 Maximum energy absorbed in a single instance: 10 × 0.5 = 5 J; Total energy absorbed: 4 × 5 J = 20 J;
[0030] 4. The energy of a single vibration (0.2-0.3g) transmitted from the car body to the seat is approximately 120J;
[0031] 5. Shock absorption capacity is improved by approximately 15%-20%.
[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, and are not intended to limit them. Although the present utility model 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 or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the present utility model.
Claims
1. A shock absorbing energy absorbing structure mounted between a slide rail upper rail and a raiser bracket, characterized by, The system includes a rivet-screw composite, a rubber block, and a nut. The rivet-screw composite includes a riveting portion, a guide portion, and a threaded connection portion. The riveting portion is fixed to the upper rail of the slide rail by a press-fitting method. The guide portion is positioned between the riveting portion and the threaded connection portion, and its diameter is larger than that of both portions. A stepped surface is formed at the connection point between the guide portion and the riveting portion / threaded connection portion. The threaded connection portion has an external thread that matches the nut. The rubber block has a through hole at a position opposite to the guide portion. The rubber block is installed at the guide portion, with its bottom surface abutting against the upper rail of the slide rail and its top surface abutting against the Raiser bracket. The Raiser bracket is locked and fixed to the threaded connection portion by a nut, with a pre-existing gap between it and the guide portion.
2. A shock absorbing energy absorbing structure between the upper rail and raiser bracket of a slide rail according to claim 1, characterized in that, Shock-absorbing structures are installed at four or more foot positions of the third-row seat mounting points in MPVs or SUVs to absorb excitation energy from the vehicle floor.
3. A shock absorbing energy absorbing structure between the upper rail and the raiser bracket of a slide rail according to claim 2, characterized in that, The shock absorption and energy absorption structure includes two spaced-apart riveting composites. The riveting parts of the two riveting composites are fixed to the upper rail of the slide rail by press riveting. The rubber block has a through hole at a position opposite to the guide part of the two riveting composites. The Raiser bracket has a through hole at a position opposite to the threaded connection part of the two riveting composites. The Raiser bracket is locked and fixed to the two riveting composites by two nuts.
4. A shock absorbing energy absorbing structure between the upper rail and the raiser bracket of a slide rail according to claim 3, characterized in that, The rivet and bolt composite component is an integral structure, and the upper structure of the seat is mounted on the Raiser bracket.