Seat radial damping mechanism and automobile seat thereof

Abstract

The invention discloses a seat radial damping mechanism and an automobile seat thereof.The seat radial damping mechanism comprises a step bolt, a framework connecting rod, a radial hydraulic damping sleeve, a supporting connecting rod and a gasket, the lower end of the framework connecting rod, the lower end of the supporting connecting rod and the gasket are each provided with a through hole, and a first lining is installed in the through hole of the framework connecting rod in a pressed mode; 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. Vibration energy generated in the vehicle driving process can be effectively absorbed and dispersed, the modal value of the seat is improved, seat shaking is reduced, and the NVH performance of the vehicle and the riding comfort of passengers are improved.

Description

Technical Field

[0001] The invention relates to the technical field of automobile seats, and in particular to a seat radial damping mechanism and an automobile seat thereof. Background Art

[0002] With the rapid development of the automobile industry, consumers are increasingly demanding ride comfort in cars. As an important component of the interior of a car, the shock absorption performance of car seats is directly related to the passenger's riding experience. Traditional car seat shock absorption systems mostly use springs and other structures, which can absorb the vibrations generated by the vehicle during driving to a certain extent, but the shock absorption effect is poor. Moreover, as the current car seats have more and more integrated functions and the weight of the seats is getting heavier, the seat modal does not meet the requirements and the seats shake significantly during driving. These problems not only affect the ride comfort of the seats, but also have a negative impact on the NVH (NVH is a very important concept in automotive engineering, which involves multiple aspects such as noise and vibration of the car) performance of the vehicle, resulting in an increase in the noise and vibration levels in the car. Summary of the invention

[0003] In view of the problems existing in the above-mentioned prior art, the present invention aims to provide a seat radial shock absorbing mechanism and a car seat thereof which can effectively absorb and disperse the vibration energy generated during the driving of the vehicle and improve the riding comfort of passengers.

[0004] In order to achieve the above-mentioned objectives, the present invention proposes a radial shock-absorbing mechanism for a seat, comprising a step bolt, a skeleton connecting rod, a radial hydraulic shock-absorbing sleeve, a support connecting rod and a gasket, wherein the lower end of the skeleton connecting rod, the lower end of the support connecting rod and the gasket are all provided with through holes, a first bushing is pressed in the through hole of the skeleton connecting rod, and a second bushing is pressed in the through hole of the support connecting rod, the step bolt passes through the first bushing, the radial hydraulic shock-absorbing sleeve, the second bushing and the gasket in turn in the transverse direction, and is locked by a lock nut, the step bolt and the radial hydraulic shock-absorbing sleeve are interference fit, the second bushing abuts between the step surface of the step bolt and the gasket, and the upper end of the support connecting rod is fixedly connected to the skeleton connecting rod by a fastening bolt.

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

[0006] In the above scheme: a gasket is also provided between the anti-loosening nut and the second bushing, and the gasket is sleeved on the step bolt to increase the contact surface, relieve stress distribution and protect the second bushing.

[0007] In the above scheme: the radial hydraulic shock-absorbing sleeve includes a radially penetrating metal inner core, the metal inner core is connected to the step bolt by screwing or crimping, the metal inner core is covered with a main rubber body, the main rubber body is wrapped with a metal outer shell, the middle part of the metal inner core is also fitted with anti-collision rubber, the anti-collision rubber is embedded with an intermediate skeleton, the intermediate skeleton is abutted against the inner wall of the metal outer shell, and a flow channel plate is also provided in the metal outer shell, the flow channel plate divides the internal cavity into a plurality of flow channels to form a liquid channel, the liquid channel is filled with damping shock-absorbing fluid, and is sealed by a seal.

[0008] The main rubber body plays the role of absorbing high-frequency vibrations;

[0009] The seal prevents the leakage of the damping fluid;

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

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

[0012] That is, the present invention integrates a hydraulic shock absorbing mechanism into the seat frame. The rubber of the hydraulic shock absorbing mechanism absorbs high-frequency vibrations. The rubber is designed with channels and chambers and filled with viscous liquid. When vibrated, the liquid is squeezed and consumes heat due to viscous resistance, thereby significantly reducing low-frequency vibrations, effectively improving the seat modal value, reducing seat jitter, and enhancing NVH performance and ride comfort.

[0013] The present invention also provides a car seat, comprising a seat frame and a slide rail assembly, and also comprising the above-mentioned seat radial shock absorbing mechanism, wherein the seat radial shock absorbing mechanism is connected between the seat frame and the slide rail assembly.

[0014] In the above scheme: there are four seat radial damping mechanisms, which are arranged at the four corners of the bottom of the seat frame respectively; the upper ends of the frame connecting rods of the two front seat radial damping mechanisms are rotatably connected to the seat frame through the mounting holes, and the fixed brackets are fixedly connected to the slide rail assembly through the mounting holes; the upper ends of the frame connecting rods of the two rear seat radial damping mechanisms are fixedly connected to the seat frame through the mounting holes, and the fixed brackets are fixedly connected to the slide rail assembly through the mounting holes. The structure is simple and easy to assemble, and the seat radial damping mechanisms are distributed at the four corners, which has good stability and damping effect.

[0015] The present invention also provides a car seat, comprising a seat frame and a slide rail assembly, and also comprising the above-mentioned seat radial damping mechanism, wherein the seat radial damping mechanism is invertedly connected between the seat frame and the slide rail assembly.

[0016] The present invention also proposes a car seat, comprising a slide rail assembly and the above-mentioned seat radial damping mechanism, wherein the seat radial damping mechanism is arranged between the bottom of the slide rail assembly and the vehicle body floor.

[0017] The beneficial effects of the present invention are:

[0018] 1. It improves the obvious shaking problem of existing seats and improves the NVH and comfort of the vehicle; 2. The fatigue durability performance of the shock-absorbing mechanism is good and can easily meet the durability test requirements of the whole seat; 3. The shock-absorbing mechanism has flexible spatial layout and can be flexibly arranged at key positions of the seat according to the FEA results of the whole chair or the whole vehicle; 4. It has excellent low-frequency vibration isolation and customizable dynamic performance, which is suitable for complex working conditions; 5. It has multi-dimensional shock absorption function, which can accurately absorb and disperse vibration energy from different directions to a certain extent, thereby significantly improving riding comfort and stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

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

[0021] Figure 2 It is an exploded diagram of the radial shock absorbing mechanism of the seat.

[0022] Figure 3 It is a cross-sectional view of the radial shock absorbing mechanism of the seat.

[0023] Figure 4 It is a schematic diagram of a radial hydraulic shock-absorbing sleeve.

[0024] Figure 5 It is a schematic diagram of a radial rubber shock-absorbing sleeve. DETAILED DESCRIPTION

[0025] like Figure 1 As shown in FIG. 5 , a radial shock absorbing mechanism of a seat is mainly composed of a step bolt 4, a skeleton connecting rod 3, a radial hydraulic shock absorbing sleeve B, a supporting connecting rod 7 and a gasket 8. The radial direction of a car seat usually refers to the left and right direction of the car seat.

[0026] The lower end of the skeleton connecting rod 3, the lower end of the supporting connecting rod 7 and the gasket 8 are all provided with through holes. The first bushing 5 is pressed into the through hole of the skeleton connecting rod 3, and the second bushing 6 is pressed into the through hole of the supporting connecting rod 7. The step bolt 4 passes through the first bushing 5, the radial hydraulic shock-absorbing sleeve B, the second bushing 6 and the gasket 8 in turn in the horizontal direction, and is locked by the anti-loosening nut 9.

[0027] The step bolt 4 and the radial hydraulic shock-absorbing sleeve B are interference fit, the second bushing 6 abuts between the step surface of the step bolt 4 and the gasket 8, and the upper end of the supporting connecting rod 7 is fixedly connected to the skeleton connecting rod 3 by the fastening bolt 11.

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

[0029] Preferably, a gasket 8 is provided between the anti-loosening nut 9 and the second bushing 6. The gasket 8 is sleeved on the step bolt 4 to increase the contact surface, relieve stress distribution and protect the second bushing.

[0030] like Figure 4 As shown (the left figure is a top view of the radial hydraulic shock absorbing sleeve B, and the right figure is a cross-sectional view at KK in the left figure), the radial hydraulic shock absorbing sleeve B includes a radially penetrating metal inner core 12, and the metal inner core 12 is connected to the step bolt 4 by screwing or crimping. The metal inner core 12 is covered with a main rubber body 13, and the main rubber body 13 is wrapped with a metal outer shell 16. The middle part of the metal inner core 12 is also attached with an anti-collision rubber 14, and the anti-collision rubber 14 is embedded with an intermediate skeleton 15, and the intermediate skeleton 15 is in contact with the inner wall of the metal outer shell 16.

[0031] A flow channel plate 18 is also provided in the metal shell 16 . The flow channel plate 18 divides the internal cavity into a plurality of flow channels to form a liquid channel 19 . The liquid channel 19 is filled with a damping fluid and is sealed by a sealing member 17 .

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

[0033] The seal 17 prevents the leakage of the damping fluid;

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

[0035] The metal shell 16 serves to wrap and support the internal structure and connect other parts externally, and can be welded or fixedly connected to the fixing bracket 10 .

[0036] That is, the present invention integrates a hydraulic shock absorbing mechanism into the seat frame. The rubber of the hydraulic shock absorbing mechanism absorbs high-frequency vibrations. The rubber is designed with channels and chambers and filled with viscous liquid. When vibrated, the liquid is squeezed and consumes heat due to viscous resistance, thereby significantly reducing low-frequency vibrations, effectively improving the seat modal value, reducing seat jitter, and enhancing NVH performance and ride comfort.

[0037] The radial hydraulic shock-absorbing sleeve B can also be replaced by a radial rubber shock-absorbing sleeve as a low-cost solution. Figure 4 As shown, the left figure is a top view of the radial rubber shock-absorbing sleeve, and the right figure is a cross-sectional view at FF in the left figure. The radial rubber shock-absorbing sleeve includes a radially penetrating metal inner core 20, which is connected to the step bolt 4 by screwing or crimping, and the metal inner core 20 is integrally covered with a rubber body 21, and the rubber body 21 is covered with a metal outer shell 22.

[0038] The present invention further proposes a car seat, comprising a seat frame 1 and a slide rail assembly 2 , and also comprising the above-mentioned seat radial shock absorbing mechanism A, wherein the seat radial shock absorbing mechanism A is connected between the seat frame 1 and the slide rail assembly 2 .

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

[0040] The upper ends of the frame connecting rods 3 of the two front seat radial damping mechanisms A are rotatably connected to the seat frames 1 through mounting holes, and the fixing brackets 10 are fixedly connected to the slide rail assembly 2 through mounting holes.

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

[0042] The present invention further proposes a car seat, comprising a seat frame 1 and a slide rail assembly 2, and also comprising the above-mentioned seat radial shock absorbing mechanism A, wherein the seat radial shock absorbing mechanism A is invertedly connected between the seat frame 1 and the slide rail assembly 2.

[0043] The present invention also proposes a car seat, including a slide rail assembly 2 and the above-mentioned seat radial damping mechanism A, wherein the seat radial damping mechanism A is arranged between the bottom of the slide rail assembly 2 and the vehicle body floor. Figure 1 Middle M position.

[0044] It is worth noting that the seat radial shock absorbing mechanism A is not limited to being arranged at the above-mentioned position, but may also be arranged at other positions on the seat.

Claims

1. A radial shock absorbing mechanism for a seat, characterized in that: The invention comprises a step bolt (4), a skeleton connecting rod (3), a radial hydraulic shock absorbing sleeve (B), a support connecting rod (7) and a gasket (8). The lower end of the skeleton connecting rod (3), the lower end of the support connecting rod (7) and the gasket (8) are all provided with through holes. A first bushing (5) is pressed into the through hole of the skeleton connecting rod (3), and a second bushing (6) is pressed into the through hole of the support connecting rod (7). The step bolt (4) passes through the first bushing (5), the radial hydraulic shock absorbing sleeve (B), the second bushing (6) and the gasket (8) in sequence in the transverse direction and is locked by a locking nut (9). The step bolt (4) and the radial hydraulic shock absorbing sleeve (B) are interference fit. The second bushing (6) abuts between the step surface of the step bolt (4) and the gasket (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 shock absorbing mechanism according to claim 1, characterized in that: A fixing bracket (10) is fixedly provided at the lower end of the outer surface of the radial hydraulic shock-absorbing sleeve (B), and mounting holes are reserved on the fixing bracket (10) and on the upper end of the skeleton connecting rod (3).

3. The seat radial shock absorbing mechanism according to claim 1, characterized in that: The radial hydraulic shock-absorbing sleeve (B) comprises a radially penetrating metal inner core (12), the metal inner core (12) being connected to a step bolt (4) by screwing or crimping, a main rubber body (13) being covered on the metal inner core (12), the main rubber body (13) being wrapped with a metal outer shell (16), an anti-collision rubber (14) being attached to the middle of the metal inner core (12), an intermediate skeleton (15) being embedded on the outside of the anti-collision rubber (14), the intermediate skeleton (15) being in contact with the inner wall of the metal outer shell (16), a flow channel plate (18) being provided inside the metal outer shell (16), the flow channel plate (18) dividing the internal cavity into a plurality of flow channels to form a liquid channel (19), the liquid channel (19) being filled with a damping shock-absorbing liquid and being sealed by a sealing member (17).

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

5. The vehicle seat according to claim 4, characterized in that: There are four seat radial shock absorbing mechanisms (A), which are respectively arranged at the four bottom corners of the seat frame (1); The radial shock absorbing mechanisms (A) of the two front seats have upper ends of their frame connecting rods (3) rotatably connected to the seat frames (1) through mounting holes, and their fixed brackets (10) are fixedly connected to the slide rail assembly (2) through mounting holes; the radial shock absorbing mechanisms (A) of the two rear seats have upper ends of their frame connecting rods (3) fixedly connected to the seat frames (1) through mounting holes, and their fixed brackets (10) are fixedly connected to the slide rail assembly (2) through mounting holes.

6. A car seat, comprising a seat frame (1) and a slide rail assembly (2), characterized in that: It also includes a seat radial shock absorbing mechanism (A) as described in any one of claims 1 to 3, wherein the seat radial shock absorbing 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 a seat radial shock absorbing mechanism (A) as described in any one of claims 1 to 3, wherein the seat radial shock absorbing mechanism (A) is arranged between the bottom of the slide rail assembly (2) and the vehicle body floor.

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