Seat radial damping mechanism and automobile seat thereof

Abstract

The utility model discloses a radial damping mechanism of seat and car seat, the radial damping mechanism of seat comprises step bolt, skeleton connecting rod, radial hydraulic damping sleeve, support connecting rod and gasket, the lower end of skeleton connecting rod, the lower end of support connecting rod and the gasket are all provided with through hole, the through hole of skeleton connecting rod is pressed with first bushing, and the first bushing is pressed with second bushing. A second lining is pressed in a through hole of the supporting connecting rod, a step bolt sequentially penetrates through the first lining, the radial hydraulic damping sleeve, the second lining and the gasket in the transverse direction and is locked through a locknut, the step bolt is in interference fit with the radial hydraulic damping sleeve, and the second lining is connected between the step face of the step bolt and the gasket in an abutting mode. The upper end of the supporting connecting rod is fixedly connected with the framework connecting rod through a fastening bolt. The vibration energy generated in the driving process of the vehicle can be effectively absorbed and dispersed, the modal value of the seat is improved, the vibration of the seat is reduced, and the NVH performance of the vehicle and the riding comfort of passengers are improved.

Description

Technical Field

[0001] This utility model relates to the field of automotive seat technology, and in particular to a radial shock absorption mechanism for a seat and its automotive seat. Background Technology

[0002] With the rapid development of the automotive industry, consumers are increasingly demanding higher levels of comfort in vehicles. As a crucial component of the vehicle interior, the shock absorption performance of car seats directly impacts passenger comfort. Traditional car seat damping systems often employ springs and similar structures, which can absorb vibrations generated during driving to some extent, but their damping effect is relatively poor. Furthermore, as modern car seats integrate more and more functions and become heavier, issues arise such as inadequate seat modal characteristics and noticeable seat vibrations during driving. These problems not only affect seat comfort but also negatively impact the vehicle's NVH (Noise, Vibration, and Harshness) performance, leading to increased noise and vibration levels inside the vehicle. Utility Model Content

[0003] In view of the problems existing in the prior art, the present invention aims to provide a radial damping mechanism for a car seat that can effectively absorb and disperse the vibration energy generated during vehicle operation and improve passenger comfort.

[0004] To achieve the above objectives, this utility model proposes a radial shock absorption mechanism for a seat, including a stepped bolt, a frame connecting rod, a radial hydraulic shock absorption sleeve, a support connecting rod, and a washer. The lower ends of the frame connecting rod, the support connecting rod, and the washer are all provided with through holes. A first bushing is press-fitted into the through hole of the frame connecting rod, and a second bushing is press-fitted into the through hole of the support connecting rod. The stepped bolt passes transversely through the first bushing, the radial hydraulic shock absorption sleeve, the second bushing, and the washer in sequence, and is locked by a lock nut. The stepped bolt and the radial hydraulic shock absorption sleeve are interference-fitted. The second bushing abuts against the stepped surface of the stepped bolt between the step surface and the washer. The upper end of the support connecting rod is fixedly connected to the frame connecting rod by a fastening bolt.

[0005] In the above scheme: a fixed bracket is fixedly provided at the lower end of the outer surface of the radial hydraulic shock absorber sleeve, and mounting holes are reserved on the fixed bracket and the upper end of the skeleton connecting rod to facilitate the assembly of the radial hydraulic shock absorber sleeve with other parts.

[0006] In the above scheme: a washer is provided between the anti-loosening nut and the second bushing. The washer is fitted onto the stepped bolt to increase the contact surface, alleviate stress distribution, and protect the second bushing.

[0007] In the above scheme: the radial hydraulic damping sleeve includes a radially penetrating metal inner core, which is connected to a stepped bolt by screwing or pressing. A main rubber body is sleeved on the metal inner core, and a metal outer shell is wrapped around the main rubber body. An anti-collision rubber is also attached to the middle of the metal inner core. An intermediate skeleton is embedded in the anti-collision rubber and abuts against the inner wall of the metal outer shell. A flow channel plate is also provided inside the metal outer shell. The flow channel plate divides the internal cavity into several flow channels to form liquid channels. The liquid channels are filled with damping and shock-absorbing fluid and sealed by a sealing element.

[0008] The main rubber body serves to absorb high-frequency vibrations;

[0009] The seals serve to prevent leakage of the damping fluid.

[0010] The intermediate frame is used for support and can still play a certain buffering role after the internal damping fluid dries up.

[0011] The metal outer shell serves to enclose and support the internal structure and connect to other external parts, and can be welded or fixedly connected to a bracket.

[0012] This invention integrates a hydraulic damping mechanism into the seat frame. The rubber of the hydraulic damping mechanism absorbs high-frequency vibrations. The rubber has channels and chambers inside and is filled with viscous liquid. When subjected to vibration, the liquid is squeezed and consumes heat due to viscous resistance, thereby significantly reducing low-frequency vibrations, effectively improving the seat modal values ​​and reducing seat vibration, and enhancing NVH performance and ride comfort.

[0013] This utility model also proposes an automobile seat, including a seat frame and a slide rail assembly, and also includes the aforementioned seat radial damping mechanism, which is connected between the seat frame and the slide rail assembly.

[0014] In the above solution: there are four radial shock absorption mechanisms for the seat, respectively located at the four bottom corners of the seat frame; the upper ends of the frame connecting rods of the two front seat radial shock absorption mechanisms are rotatably connected to the seat frame through mounting holes, and their fixed brackets are fixedly connected to the slide rail assembly through mounting holes; the upper ends of the frame connecting rods of the two rear seat radial shock absorption mechanisms are fixedly connected to the seat frame through mounting holes, and their fixed brackets are fixedly connected to the slide rail assembly through mounting holes. The structure is simple, assembly is convenient, and the radial shock absorption mechanisms are distributed at the four corners, resulting in good stability and shock absorption effect.

[0015] This utility model also proposes an automobile seat, including a seat frame and a slide rail assembly, and also includes the aforementioned seat radial damping mechanism, which is inverted and connected between the seat frame and the slide rail assembly.

[0016] This utility model also proposes an automobile seat, including a slide rail assembly and the aforementioned seat radial damping mechanism, wherein the seat radial damping mechanism is arranged between the bottom of the slide rail assembly and the vehicle floor.

[0017] The beneficial effects of this utility model are:

[0018] 1. Improves the problem of significant seat vibration, enhancing vehicle NVH and comfort; 2. The shock absorption mechanism has good fatigue durability performance, easily meeting the requirements of whole-seat durability testing; 3. The shock absorption mechanism has flexible spatial arrangement, allowing for flexible placement in key positions of the seat based on the FEA results of the whole seat or whole vehicle; 4. Excellent low-frequency vibration isolation, customizable dynamic performance, suitable for complex working conditions; 5. Possesses multi-dimensional shock absorption function, capable of accurately absorbing and dispersing vibration energy from different directions to a certain extent, thereby significantly improving ride comfort and stability. Attached Figure Description

[0019] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0020] Figure 1 This is a schematic diagram of a shock-absorbing seat.

[0021] Figure 2 This is an exploded diagram of the seat's radial damping mechanism.

[0022] Figure 3 This is a cross-sectional view of the seat's radial damping mechanism.

[0023] Figure 4 This is a schematic diagram of a radial hydraulic shock absorber sleeve.

[0024] Figure 5 This is a schematic diagram of a radial rubber damping sleeve. Detailed Implementation

[0025] like Figure 1 As shown in Figure 5, a radial damping mechanism for a car seat mainly consists of a stepped bolt 4, a frame connecting rod 3, a radial hydraulic damping sleeve B, a support connecting rod 7, and a gasket 8. The radial direction of a car seat typically refers to the left-right direction.

[0026] The lower end of the skeleton connecting rod 3, the lower end of the support connecting rod 7, and the washer 8 are all provided with through holes. The first bushing 5 is press-fitted into the through hole of the skeleton connecting rod 3, and the second bushing 6 is press-fitted into the through hole of the support connecting rod 7. The stepped bolt 4 passes through the first bushing 5, the radial hydraulic damping sleeve B, the second bushing 6, and the washer 8 in sequence along the transverse direction, and is locked by the anti-loosening nut 9.

[0027] The stepped bolt 4 and the radial hydraulic damping sleeve B are interference fit. The second bushing 6 abuts between the stepped surface of the stepped bolt 4 and the washer 8. The upper end of the support rod 7 is fixedly connected to the skeleton rod 3 by the fastening bolt 11.

[0028] Ideally, a fixed bracket 10 is fixedly provided at the lower end of the outer surface of the radial hydraulic damping sleeve B. Mounting holes are reserved on the fixed bracket 10 and the upper end of the skeleton connecting rod 3 to facilitate the assembly of the radial hydraulic damping sleeve with other parts.

[0029] Ideally, a washer 8 should also be provided between the anti-loosening nut 9 and the second bushing 6. The washer 8 is fitted onto the stepped bolt 4 to increase the contact surface, alleviate stress distribution, and protect the second bushing.

[0030] like Figure 4 As shown (the left image is a top view of the radial hydraulic damping sleeve B, and the right image is a cross-sectional view at point KK in the left image), the radial hydraulic damping sleeve B includes a radially penetrating metal core 12, which is connected to the stepped bolt 4 by screws or press-fitting. A main rubber body 13 is fitted over the metal core 12, and a metal outer shell 16 surrounds the main rubber body 13. An anti-collision rubber 14 is also attached to the middle of the metal core 12, and an intermediate skeleton 15 is embedded around the anti-collision rubber 14, abutting against the inner wall of the metal outer shell 16.

[0031] The metal casing 16 is also provided with a flow channel plate 18, which divides the internal cavity into several flow channels to form a liquid channel 19. The liquid channel 19 is filled with damping and shock-absorbing fluid and is sealed by a seal 17.

[0032] The main rubber body 13 serves to absorb high-frequency vibrations;

[0033] Seal 17 serves to prevent leakage of damping fluid;

[0034] The intermediate frame 15 is used for support and can still play a certain buffering role after the internal damping fluid dries up.

[0035] The metal casing 16 serves to enclose and support the internal structure and connect to other external parts, and can be welded or fixedly connected to the fixed bracket 10.

[0036] This invention integrates a hydraulic damping mechanism into the seat frame. The rubber of the hydraulic damping mechanism absorbs high-frequency vibrations. The rubber has channels and chambers inside and is filled with viscous liquid. When subjected to vibration, the liquid is squeezed and consumes heat due to viscous resistance, thereby significantly reducing low-frequency vibrations, effectively improving the seat modal values ​​and reducing seat vibration, and enhancing NVH performance and ride comfort.

[0037] Radial hydraulic damping sleeve B can also be replaced by radial rubber damping sleeve as a low-cost alternative. For example... Figure 4 As shown, the left figure is a top view of the radial rubber damping sleeve, and the right figure is a cross-sectional view at FF in the left figure. The radial rubber damping sleeve includes a radially penetrating metal inner core 20, which is connected to the stepped bolt 4 by screwing or pressing. A rubber body 21 is integrally covered on the metal inner core 20, and a metal outer shell 22 is covered on the rubber body 21.

[0038] This utility model also proposes an automobile seat, including a seat frame 1 and a slide rail assembly 2, and also includes the aforementioned seat radial damping mechanism A, which is connected between the seat frame 1 and the slide rail assembly 2.

[0039] In the above scheme: there are 4 radial shock absorption mechanisms A for the seat, which are respectively arranged at the four bottom corners of the seat frame 1.

[0040] The radial shock absorption mechanism A of the two front seats has its upper end of the frame connecting rod 3 rotatably connected to the seat frame 1 through the mounting hole, and its fixed bracket 10 is fixedly connected to the slide rail assembly 2 through the mounting hole.

[0041] The radial shock absorption mechanism A of the two rear seats has its upper end of the frame connecting rod 3 fixedly connected to the seat frame 1 through mounting holes, and its fixing bracket 10 fixedly connected to the slide rail assembly 2 through mounting holes. The structure is simple and easy to assemble, and the radial shock absorption mechanism A of the seats is distributed at the four corners, which has good stability and shock absorption effect.

[0042] This utility model also proposes an automobile seat, including a seat frame 1 and a slide rail assembly 2, and also includes the aforementioned seat radial damping mechanism A, which is inverted and connected between the seat frame 1 and the slide rail assembly 2.

[0043] This utility model also proposes a car seat, including a slide rail assembly 2, and the aforementioned radial shock absorption mechanism A. The radial shock absorption mechanism A is arranged between the bottom of the slide rail assembly 2 and the vehicle floor. Figure 1 Position M in the middle.

[0044] It is worth noting that the seat radial damping mechanism A is not limited to the above-mentioned location, but can also be arranged in other locations on the seat.

Claims

1. A radial shock absorption mechanism for a seat, characterized in that: The assembly includes a stepped bolt (4), a skeleton connecting rod (3), a radial hydraulic damping sleeve (B), a support connecting rod (7), and a washer (8). The lower end of the skeleton connecting rod (3), the lower end of the support connecting rod (7), and the washer (8) are all provided with through holes. A first bushing (5) is press-fitted into the through hole of the skeleton connecting rod (3), and a second bushing (6) is press-fitted into the through hole of the support connecting rod (7). The stepped bolt (4) passes through the first bushing (5), the radial hydraulic damping sleeve (B), the second bushing (6), and the washer (8) in sequence along the transverse direction, and is locked by a lock nut (9). The stepped bolt (4) and the radial hydraulic damping sleeve (B) are interference fit. The second bushing (6) abuts between the stepped surface of the stepped bolt (4) and the washer (8). The upper end of the support connecting rod (7) is fixedly connected to the skeleton connecting rod (3) by a fastening bolt (11).

2. The seat radial damping mechanism according to claim 1, characterized in that: The lower end of the outer surface of the radial hydraulic damping sleeve (B) is fixed with a fixed bracket (10), and mounting holes are reserved on the fixed bracket (10) and the upper end of the skeleton connecting rod (3).

3. The seat radial damping mechanism according to claim 1, characterized in that: The radial hydraulic damping sleeve (B) includes a radially penetrating metal core (12), which is connected to the stepped bolt (4) by screwing or pressing. A main rubber body (13) is sleeved on the metal core (12), and a metal shell (16) is wrapped around the main rubber body (13). An anti-collision rubber (14) is also attached to the middle of the metal core (12), and an intermediate skeleton (15) is embedded in the anti-collision rubber (14). The intermediate skeleton (15) abuts against the inner wall of the metal shell (16). A flow channel plate (18) is also provided inside the metal shell (16). The flow channel plate (18) divides the internal cavity into several flow channels to form a liquid channel (19). The liquid channel (19) is filled with damping and shock-absorbing fluid and sealed by a seal (17).

4. A car seat, comprising a seat frame (1) and a slide rail assembly (2), characterized in that: It also includes the seat radial damping mechanism (A) as described in any one of claims 1-3, wherein the seat radial damping mechanism (A) is connected between the seat frame (1) and the slide rail assembly (2).

5. The car seat according to claim 4, characterized in that: The seat radial damping mechanism (A) consists of four units, which are respectively located at the four bottom corners of the seat frame (1); The radial damping mechanism (A) of the two front seats has its upper end of the frame connecting rod (3) rotatably connected to the seat frame (1) through the mounting hole, and its fixed bracket (10) is fixedly connected to the slide rail assembly (2) through the mounting hole; the radial damping mechanism (A) of the two rear seats has its upper end of the frame connecting rod (3) fixedly connected to the seat frame (1) through the mounting hole, and its fixed bracket (10) is fixedly connected to the slide rail assembly (2) through the mounting hole.

6. A car seat, comprising a seat frame (1) and a slide rail assembly (2), characterized in that: It also includes the seat radial damping mechanism (A) according to any one of claims 1-3, wherein the seat radial damping mechanism (A) is invertedly connected between the seat frame (1) and the slide rail assembly (2).

7. A car seat, comprising a slide rail assembly (2), characterized in that: It also includes the seat radial damping mechanism (A) as described in any one of claims 1-3, wherein the seat radial damping mechanism (A) is disposed between the bottom of the slide rail assembly (2) and the vehicle floor.

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