Seat axial damping mechanism and automobile seat thereof

Abstract

The seat axial damping mechanism comprises a step bolt, an upper connecting support, an axial hydraulic damping sleeve, a damping fixing plate, a spring, a blocking piece and a locknut, the upper connecting support, the damping fixing plate and the blocking piece are respectively provided with a through hole for the step bolt to penetrate through, a lining is installed in the through hole of the upper connecting support in a pressing mode, and the locknut is connected with the axial hydraulic damping sleeve. The step bolt sequentially penetrates through the lining, the axial hydraulic damping sleeve, the damping fixing plate, the blocking piece and the spring in the vertical direction and is locked through the locknut, the step bolt is in interference fit with the axial hydraulic damping sleeve, and the step face of the step bolt abuts against the upper surface of the blocking piece. 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] The utility model relates to the technical field of automobile seat, especially relates to a seat axial damping mechanism and automobile seat thereof. BACKGROUND

[0002] With the rapid development of automobile industry, the requirement of consumer to the comfort of automobile riding is increasing. The damping performance of automobile seat as an important part in the car is directly related to the riding experience of passenger. The traditional damping system of automobile seat adopts spring structure, which can absorb the vibration generated in the driving process of vehicle to some extent, but the damping effect is poor. Moreover, with the current automobile seat integrated function more and more, the weight of seat is heavier and heavier, and the seat mode does not meet the requirements and the seat shakes obviously in the driving process, which not only affects the riding comfort of seat, but also has negative influence on the NVH (NVH is a very important concept in automobile engineering, which involves noise, vibration and other aspects of automobile) performance, resulting in the increase of noise and vibration level in the car. SUMMARY

[0003] In view of the problems existing in the prior art, the utility model aims at providing a seat axial damping mechanism and automobile seat thereof, which can effectively absorb and disperse the vibration energy generated in the driving process of vehicle and improve the riding comfort of passenger.

[0004] In order to realize the above purpose, the utility model provides a seat axial damping mechanism, which comprises a stepped bolt, an upper connecting support, an axial hydraulic damping sleeve, a damping fixed plate, a spring, a baffle and a lock nut, the upper connecting support, the damping fixed plate and the baffle are all provided with a through hole for the stepped bolt to pass through, the bushing is press-fitted in the through hole of the upper connecting support, the stepped bolt passes through the bushing, the axial hydraulic damping sleeve, the damping fixed plate, the baffle and the spring in sequence along the vertical direction and is locked by the lock nut, the stepped bolt is in interference fit with the axial hydraulic damping sleeve, and the stepped surface of the stepped bolt abuts against the upper surface of the baffle.

[0005] In the above scheme, the axial hydraulic damping sleeve comprises an axial metal inner core, the metal inner core is connected with the stepped bolt in the form of screwing or pressure connection, the upper rubber body and the lower rubber body are sleeved on the metal inner core, the upper rubber body and the lower rubber body are jointly wrapped with a metal shell, the inner skeleton is embedded on the outer surface of the upper rubber body, the inner skeleton abuts against the inner wall of the metal shell, the metal shell is fixedly connected with the damping fixed plate, a flow channel plate is further arranged in the metal 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 liquid, and the liquid channel is sealed by the sealing sheet and the sealing plate.

[0006] The upper rubber body and the lower rubber body have a buffering and damping effect.

[0007] The sealing sheet and the sealing plate prevent the damping fluid from leaking.

[0008] The inner framework supports and buffers when the damping fluid is dry.

[0009] The metal shell wraps and supports the internal structure and connects other parts.

[0010] The hydraulic damping mechanism is integrated in the seat framework, the rubber absorbs high-frequency vibration, the rubber is internally designed with a channel and a chamber and filled with viscous liquid, when subjected to vibration, the liquid is extruded and consumes heat due to viscous resistance, thereby significantly reducing low-frequency vibration, effectively improving the seat modal value and reducing seat shaking, and improving NVH performance and riding comfort.

[0011] The utility model discloses still propose a kind of car seat, including upper framework assembly and lower framework assembly, still include above-mentioned seat axial damping mechanism, the seat axial damping mechanism is connected between upper framework assembly and lower framework assembly.

[0012] In the above scheme: the lower framework assembly includes lower framework assembly connecting plate, the seat axial damping mechanism is 4, respectively is arranged in the top four corners of lower framework assembly connecting plate, support is connected on it and upper framework assembly is welded fixed, and its damping fixed plate is fixedly connected with axial hydraulic damping sleeve, and is fixed on lower framework assembly connecting plate by bolt, lower framework assembly connecting plate is also provided with the through hole for step bolt to pass through, lower framework assembly connecting plate is abutted between spring and damping fixed plate, simple structure, convenient to assemble, and good stability.

[0013] The utility model discloses still propose a kind of car seat, including lower framework assembly and slide rail assembly, still include above-mentioned seat axial damping mechanism, the seat axial damping mechanism is connected between lower framework assembly and slide rail assembly.

[0014] The utility model discloses still propose a kind of car seat, including slide rail assembly, still include above-mentioned seat axial damping mechanism, the seat axial damping mechanism is arranged between the bottom of slide rail assembly and car body floor.

[0015] The utility model has the advantages of:

[0016] 1. The improved seat shaking problem is solved, the vehicle NVH and comfort are improved; 2. The fatigue durability of the damping mechanism is good, and the whole chair durability test requirement can be easily met; 3. The space arrangement of the damping mechanism is flexible, which can be arranged at the key position of the seat according to the FEA result of the whole chair or the whole vehicle; 4. The low-frequency vibration isolation is excellent, the dynamic performance can be customized, and it is suitable for complex working conditions; 5. It has multi-dimensional damping function, which can absorb and disperse the vibration energy from different directions to a certain extent, thereby significantly improving the comfort and stability of riding. BRIEF DESCRIPTION OF DRAWINGS

[0017] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

[0018] Figure 1 is a schematic view of a damping seat.

[0019] Figure 2 is an exploded schematic view of a seat axial damping mechanism.

[0020] Figure 3 is a schematic view of an axial hydraulic damping sleeve. DETAILED DESCRIPTION

[0021] As shown in Figure 1 -3, a seat axial damping mechanism mainly consists of a stepped bolt 13, an upper connecting bracket 11, an axial hydraulic damping sleeve 3, a damping fixed plate 6, a spring 8, a baffle 9 and a lock nut 10.

[0022] The upper connecting bracket 11, the damping fixed plate 6 and the baffle 9 are all provided with through holes for the stepped bolt 13 to pass through, the bushing 4 is press-fitted in the through hole of the upper connecting bracket 11, the stepped bolt 13 passes through the bushing 4, the axial hydraulic damping sleeve 3, the damping fixed plate 6, the baffle 9 and the spring 8 in sequence along the vertical direction, and is locked by the lock nut 10. The stepped bolt 13 is in interference fit with the axial hydraulic damping sleeve 3, and the stepped surface of the stepped bolt 13 abuts against the upper surface of the baffle 9.

[0023] The seat axial in the present scheme refers to the vertical direction of the seat.

[0024] As shown in Figure 3As shown, the axial hydraulic damping sleeve 3 comprises an axial metal inner core 33 connected with the stepped bolt 13 by screwing or pressing, and the upper rubber body 32 and the lower rubber body 37 are sleeved on the metal inner core 33, and the upper rubber body 32 and the lower rubber body 37 are collectively wrapped with a metal shell 31, wherein the upper rubber body 32 is embedded with an inner skeleton 36 abutting against the inner wall of the metal shell 31, the metal shell 31 is fixedly connected to the damping fixing plate 6, and the metal shell 31 is further provided with a flow channel plate 35, the flow channel plate 35 divides the internal cavity into a plurality of flow channels to form a liquid channel 39, the liquid channel 39 is filled with damping liquid, and the liquid channel 39 is sealed by the sealing sheet 34 and the sealing plate 38.

[0025] The upper rubber body 32 and the lower rubber body 37 play a buffering and damping role.

[0026] The sealing sheet 34 and the sealing plate 38 play a role in preventing the damping liquid from leaking.

[0027] The inner skeleton 36 plays a supporting role and can still play a certain buffering role after the internal damping liquid is dried up.

[0028] The metal shell 31 plays a role in wrapping and supporting the internal structure and externally connecting other parts.

[0029] That is, the hydraulic damping mechanism is integrated in the seat skeleton, the high-frequency vibration is absorbed by the rubber of the hydraulic damping mechanism, the rubber is internally designed with a channel and a chamber and filled with viscous liquid, when subjected to vibration, the liquid is extruded and consumes heat due to viscous resistance, thereby significantly reducing low-frequency vibration, effectively improving the seat modal value and reducing seat shaking, and improving the NVH performance and riding comfort.

[0030] The utility model discloses still propose a kind of automobile seat, including upper skeleton assembly 2 and lower skeleton assembly 1, still include above-mentioned seat axial damping mechanism C, seat axial damping mechanism C is connected between upper skeleton assembly 2 and lower skeleton assembly 1.

[0031] Preferably, the lower skeleton assembly 1 includes a lower skeleton assembly connecting plate 7, and the seat axial damping mechanism C is four, respectively arranged at the top four corners of the lower skeleton assembly connecting plate 7, the upper connecting bracket 11 is welded and fixed with the upper skeleton assembly 2, the damping fixing plate 6 is fixedly connected with the axial hydraulic damping sleeve 3, and the stepped bolt 13 is fixed on the lower skeleton assembly connecting plate 7 through the bolt 5, the lower skeleton assembly connecting plate 7 is abutted between the spring 8 and the damping fixing plate 6, the structure is simple, convenient to assemble, and good stability.

[0032] The utility model also proposes a kind of automobile seat, including lower framework assembly 1 and slide rail assembly 12, still including above-mentioned seat axial damping mechanism C, seat axial damping mechanism C is connected between lower framework assembly 1 and slide rail assembly 12, such as Figure 1 Position in M of middle.

[0033] The utility model also proposes a kind of automobile seat, including slide rail assembly 12, still including above-mentioned seat axial damping mechanism C, seat axial damping mechanism C is laid between the bottom of slide rail assembly 12 and car body floor, such as Figure 1 Position in N of middle.

[0034] It is worth mentioning that seat axial damping mechanism C is not limited to be arranged in above-mentioned position, can also be arranged in other positions on seat, such as Figure 1 Position in H etc.

Claims

1. A seat axial damping mechanism characterized by: The stepped bolt (13), the upper connecting support (11), the axial hydraulic shock absorbing sleeve (3), the shock absorbing fixed plate (6), the spring (8), the baffle (9) and the lock nut (10), the upper connecting support (11), the shock absorbing fixed plate (6) and the baffle (9) are provided with through holes for the stepped bolt (13) to pass through, the bushing (4) is pressed into the through hole of the upper connecting support (11), the stepped bolt (13) passes through the bushing (4), the axial hydraulic shock absorbing sleeve (3), the shock absorbing fixed plate (6), the baffle (9) and the spring (8) in sequence in the vertical direction, and is locked by the lock nut (10), the stepped bolt (13) is in interference fit with the axial hydraulic shock absorbing sleeve (3), and the stepped surface of the stepped bolt (13) abuts against the upper surface of the baffle (9).

2. The seat axial damping mechanism according to claim 1, characterized in that: The axial hydraulic shock absorbing sleeve (3) comprises an axially penetrating metal inner core (33), the metal inner core (33) is connected with the stepped bolt (13) in the form of screwing or pressing, the metal inner core (33) is externally sleeved with an upper rubber body (32) and a lower rubber body (37), the upper rubber body (32) and the lower rubber body (37) are jointly wrapped with a metal shell (31), the upper rubber body (32) is externally embedded with an inner framework (36), the inner framework (36) abuts against the inner wall of the metal shell (31), the metal shell (31) is fixedly connected with the shock absorbing fixed plate (6), and the metal shell (31) is further provided with a flow channel plate (35) inside, the flow channel plate (35) divides the internal cavity into a plurality of flow channels to form a liquid passage (39), the liquid passage (39) is filled with damping shock absorbing liquid and is sealed by a sealing sheet (34) and a sealing plate (38).

3. A car seat comprising an upper frame assembly (2) and a lower frame assembly (1), characterized in that: The seat axial shock absorbing mechanism (C) is connected between the upper framework assembly (2) and the lower framework assembly (1).

4. The automotive seat according to claim 3, characterized in that: The lower framework assembly (1) comprises a lower framework assembly connecting plate (7), the seat axial shock absorbing mechanism (C) is four, which are arranged at the top four corners of the lower framework assembly connecting plate (7), the upper connecting support (11) is welded and fixed with the upper framework assembly (2), the shock absorbing fixed plate (6) is fixedly connected with the axial hydraulic shock absorbing sleeve (3) and is fixed on the lower framework assembly connecting plate (7) by the bolt (5), the lower framework assembly connecting plate (7) is also provided with through holes for the stepped bolt (13) to pass through, and the lower framework assembly connecting plate (7) abuts between the spring (8) and the shock absorbing fixed plate (6).

5. A car seat comprising a lower frame assembly (1) and a slide rail assembly (12), characterized in that: The seat axial shock absorbing mechanism (C) is connected between the lower framework assembly (1) and the slide rail assembly (12).

6. A motor vehicle seat comprising a slide rail assembly (12), characterized in that: The seat axial shock absorbing mechanism (C) is arranged between the bottom of the slide rail assembly (12) and the vehicle body floor.

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