CN113815505A

CN113815505A - Seat energy-absorbing device

Info

Publication number: CN113815505A
Application number: CN202111312376.2A
Authority: CN
Inventors: 张然; 欧斌
Original assignee: Chongqing Zhier Technology Co ltd
Current assignee: Chongqing Zhier Technology Co ltd
Priority date: 2021-11-08
Filing date: 2021-11-08
Publication date: 2021-12-21

Abstract

The invention relates to a seat energy absorption device, which comprises an upper shock absorption body, a lower shock absorption body, a buffer mechanism, an energy absorption mechanism, a first abutting body and a second abutting body, wherein the upper shock absorption body is connected with the lower shock absorption body through a connecting rod; the upper shock absorption body is provided with an upper shock absorption cavity; the lower shock absorption body is provided with a lower shock absorption cavity; the upper shock absorber and the lower shock absorber are sleeved with each other; the buffer mechanism and the energy absorption mechanism are both arranged in the lower damping cavity; the buffer mechanism and the cavity bottom of the upper shock absorption cavity form a shock absorption gap at intervals; a propping notch is arranged on the side wall of the cavity opening of the lower damping cavity; the upper shock absorption body is provided with a first abutting hole; the first abutting body is arranged in the abutting gap, and two ends of the first abutting body are positioned in the first abutting hole; the lower shock absorber is provided with a strip hole; the upper shock absorption body is provided with a second abutting hole; the second abutting body penetrates through the strip hole, and two ends of the second abutting body are positioned in the second abutting hole; one end of the energy absorption mechanism is connected with the first supporting body, and the other end of the energy absorption mechanism is connected with the second supporting body. The seat energy absorption device can guarantee the lightning protection and energy absorption effects and can also meet the riding comfort level.

Description

Seat energy-absorbing device

Technical Field

The invention belongs to the field of seat shock resistance, and particularly relates to a seat energy absorption device.

Background

Generally, in order to improve the comfort of passengers, a seat on a vehicle is provided with an anti-vibration device, so that the anti-vibration device absorbs vibration caused by vehicle bumping due to road conditions during driving, and the damping performance of the seat directly determines the comfort of the passengers. The anti-seismic design on the seat not only has the shock-absorbing effect, but also is not neglected to the effect of lightning protection in the military field, and directly influences the war force state of the fighter.

The existing lightning protection seat energy absorption component adopts thin-wall metal materials to deform and crush so as to achieve the purpose of energy absorption and buffering, the vibration of vehicles during running is not enough in practical application, and the thin-wall metal materials are easy to generate small cracks from the edge in the fatigue process, so that the thin-wall metal materials spread to the whole material, the energy absorption component is failed, the lightning protection function is lost, and the driving safety of passengers is influenced. The energy absorption assembly is connected with the seat in a pure rigid mode, so that the riding comfort is poor, the body function maintenance of a passenger is influenced, and the sustainable fighting capacity is poor.

Therefore, design a seat energy-absorbing device, can enough guarantee its lightning protection energy-absorbing effect, also can satisfy the comfort level of taking, be present the problem that awaits the solution urgently.

Disclosure of Invention

Based on the above, the invention provides a seat energy absorption device, which overcomes the defects of the prior art, wherein a buffer mechanism firstly buffers during earthquake resistance, so that the riding comfort of passengers is ensured. The energy absorption mechanism absorbs energy and absorbs shock when the shock exceeds a certain limit borne by the buffer mechanism, so that the lightning protection and energy absorption effects are further improved, and the structure is simple.

The first technical scheme provided by the invention is as follows:

a seat energy absorption device comprises an upper shock absorption body, a lower shock absorption body, a buffer mechanism, an energy absorption mechanism, a first abutting body and a second abutting body; the upper shock absorption body is provided with an upper shock absorption cavity; the lower shock absorption body is provided with a lower shock absorption cavity; the upper shock absorption body and the lower shock absorption body are sleeved with each other, and one end of the lower shock absorption body is positioned in the upper shock absorption cavity; the buffer mechanism and the energy absorption mechanism are both arranged in the lower damping cavity; one end of the buffer mechanism is connected with the lower damping body, and the other end of the buffer mechanism and the cavity bottom of the upper damping cavity form a damping gap at an interval; a propping notch is arranged on the side wall of the cavity opening of the lower damping cavity; the upper shock absorption body is provided with a first abutting hole; the first abutting body is arranged in the abutting gap, and two ends of the first abutting body are positioned in the first abutting hole; the lower shock absorber is provided with a strip hole; the upper shock absorption body is provided with a second abutting hole; the second abutting body penetrates through the strip hole, and two ends of the second abutting body are positioned in the second abutting hole; one end of the energy absorption mechanism is connected with the first supporting body, and the other end of the energy absorption mechanism is connected with the second supporting body.

Further, the strip hole is closer to the cavity bottom of the lower damping cavity relative to the second abutting hole.

Further, the difference between the distance from the strip hole to the bottom of the lower damping cavity and the distance from the second abutting hole to the bottom of the lower damping cavity is not smaller than the height of the damping gap.

Further, the difference between the distance from the strip hole to the bottom of the lower damping cavity and the distance from the second abutting hole to the bottom of the lower damping cavity is larger than the height of the damping gap.

Further, the buffer mechanism comprises a buffer head and a buffer body; one end of the buffer body abuts against the cavity bottom of the lower damping cavity, and the other end abuts against the buffer head; the buffer head is connected with the lower shock absorption body.

Furthermore, an extrusion frame is formed at one end of the buffer head close to the cavity opening of the lower damping cavity; the connecting pin is arranged in the extrusion frame, and two ends of the connecting pin are connected with the lower damping body.

Further, the energy absorbing mechanism includes a steel wire; one end of the steel wire is connected with the first abutting body, and the other end of the steel wire is connected with the second abutting body.

Further, the steel wire includes a plurality of, and the interval sets up.

Further, the diameter of the steel wires is the same.

Further, the steel wire is bent for multiple times at one end close to the cavity opening of the lower damping cavity.

The invention has the beneficial effects that:

firstly, the buffer mechanism buffers in the anti-seismic process, and the comfort level of riding personnel is ensured. The energy absorption mechanism absorbs energy and absorbs shock when the shock exceeds a certain limit borne by the buffer mechanism, so that the lightning protection and energy absorption effects are further improved, and the structure is simple.

Drawings

FIG. 1 is a schematic structural view of a seat energy absorber according to an embodiment of the present invention.

Description of reference numerals:

01. an upper shock absorber; 11. an upper damping chamber; 12. a shock absorbing gap; 13. a first holding hole; 14. a second holding hole; 02. a lower shock absorber; 21. a lower damping chamber; 22. abutting against the notch; 23. a bar hole; 03. a buffer mechanism; 31. a buffer head; 311. extruding the frame; 32. a buffer body; 33. a connecting pin; 04. an energy absorbing mechanism; 41. a steel wire; 05. a first supporting body; 06. a second supporting body.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the embodiments of the present application, it is to be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like, refer to the orientation or positional relationship as shown in the drawings, or as conventionally placed in use of the product of the application, or as conventionally understood by those skilled in the art, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be considered as limiting the present application.

In the description of the embodiments of the present application, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

The technical solution in the present application will be described below with reference to the accompanying drawings.

Example one

Referring to fig. 1, an embodiment of the invention provides a seat energy absorption device. The seat energy absorption device comprises an upper shock absorption body 01, a lower shock absorption body 02, a buffer mechanism 03, an energy absorption mechanism 04, a first abutting body 05 and a second abutting body 06. The upper shock absorber 01 is provided with an upper shock absorbing cavity 11. The lower damper body 02 is provided with a lower damper chamber 21. The upper shock absorbing body 01 and the lower shock absorbing body 02 are fitted to each other, and one end of the lower shock absorbing body 02 is located in the upper shock absorbing chamber 11.

The buffer mechanism 03 and the energy absorption mechanism 04 are both disposed in the lower damping cavity 21. One end of the buffer mechanism 03 is connected with the lower damping body 02, and the other end is spaced from the bottom of the upper damping cavity 11 to form a damping gap 12. The side wall of the cavity opening of the lower damping cavity 21 is provided with a propping notch 22. The upper shock absorber 01 is provided with a first abutting hole 13. The first abutting body 05 is disposed in the abutting notch 22, and two ends of the first abutting body 05 are located in the first abutting hole 13. The lower shock absorber 02 is provided with a bar hole 23. The upper shock absorber 01 is provided with a second abutting hole 14. The second abutting body 06 passes through the bar hole 23, and both ends are located in the second abutting hole 14. One end of the energy absorption mechanism 04 is connected with the first supporting body 05, and the other end is connected with the second supporting body 06.

The specific structure of each sub-component is described in detail below:

the lower damping body 02 is sleeved in the upper damping cavity 11 of the upper damping body 01, and the upper damping body 01 and the lower damping body 02 are fixedly connected through the first abutting body 05 and the second abutting body 06. In order to ensure that the upper shock absorber 01 and the lower shock absorber 02 can transmit the vibration to the buffer mechanism 03 and the energy absorbing mechanism 04 located in the lower shock absorbing cavity 21 after receiving the vibration, the relative distance between the first abutting body 05 and the second abutting body 06 needs to be different between the upper shock absorber 01 and the lower shock absorber 02. In this embodiment, the second abutting holes 14 are formed in the upper shock absorber 01, and the bar holes 23 are formed in the lower shock absorber 02 to adjust the relative positions of the second abutting bodies 06 with respect to the lower shock absorber 02 and the upper shock absorber 01, respectively.

Specifically, in order to ensure that the cushioning mechanism 03 is first subjected to impact to perform cushioning, the bar hole 23 is closer to the bottom of the lower cushioning chamber 21 than the second abutting hole 14. Thus, in the initial position, the second abutting body 06 is located in the bar hole 23 and does not contact with the end of the bar hole 23 near the bottom of the lower damper chamber 21, and a damping distance is maintained. When receiving vibration, the lower damping body 02 firstly compresses the buffer mechanism 03 to perform buffering and damping, and only when the vibration is too large, the moving distance of the lower damping body 02 exceeds the distance between the second abutting body 06 and one end of the strip hole 23 close to the bottom of the lower damping cavity 21, the energy absorption mechanism 04 is extruded to perform energy absorption and damping.

It can be understood that the distance between the second abutting body 06 and the end of the bar hole 23 close to the bottom of the lower damping chamber 21 is the difference between the distance from the bar hole 23 to the bottom of the lower damping chamber 21 and the distance from the second abutting hole 14 to the bottom of the lower damping chamber 21. Here, the shock absorbing gap 12 has the effect of adjusting the shock absorbing function, and a certain size relationship should be ensured between the distance from the same hole 23 of the shock absorbing gap 12 to the bottom of the lower shock absorbing cavity 21 and the distance from the second abutting hole 14 to the bottom of the lower shock absorbing cavity 21, so as to ensure that the shock absorbing is firstly performed, but the shock absorbing is not performed by absorbing energy.

Specifically, if the difference between the distance from the bar hole 23 to the bottom of the lower damping cavity 21 and the distance from the second abutting hole 14 to the bottom of the lower damping cavity 21 is greater than the height of the damping gap 12, when the buffer mechanism 03 does not abut against the bottom of the upper damping body 01 cavity for damping, the lower damping body 02 already abuts against the second abutting body 06 for absorbing energy and damping. Therefore, the difference between the distance from the bar hole 23 to the bottom of the lower shock absorbing chamber 21 and the distance from the second holding hole 14 to the bottom of the lower shock absorbing chamber 21 should be not less than the height of the shock absorbing gap 12. Preferably, the difference between the distance from the bar hole 23 to the bottom of the lower shock absorbing cavity 21 and the distance from the second holding hole 14 to the bottom of the lower shock absorbing cavity 21 is greater than the height of the shock absorbing gap 12.

The buffer mechanism 03 is used for buffering and damping, and specifically includes a buffer head 31 and a buffer body 32. One end of the buffer body 32 abuts against the bottom of the lower damping chamber 21, and the other end abuts against the buffer head 31. The cushion head 31 is connected to the lower shock absorbing body 02. The shock absorbing gap 12 is formed between the shock absorbing head 31 and the bottom of the upper shock absorbing cavity 11.

In order to further improve the energy absorbing and shock absorbing effects, a squeezing frame 311 is formed at one end of the cushioning head 31 close to the opening of the lower shock absorbing cavity 21. The connection pin 33 is disposed in the pressing frame 311, and both ends are connected with the lower damper 02. Thus, in the later stage of energy absorption and shock absorption, when the buffer body 32 is compressed to the limit, the buffer head 31 forming the extrusion frame 311 may receive the deformation and collapse caused by extrusion, thereby achieving a certain degree of energy absorption and shock absorption.

The structure and material of the energy absorbing mechanism 04 determine the energy absorbing and shock absorbing effects. In this embodiment, energy absorbing mechanism 04 includes a steel wire 41. One end of the steel wire 41 is connected to the first abutting body 05, and the other end is connected to the second abutting body 06. The steel wire 41 has excellent performance in torsion resistance, creep resistance and the like, and can effectively deal with the vibration of a vehicle in the driving process by absorbing energy by utilizing the deformation and crushing principle of the steel wire 41. Compared with an energy absorption structure adopting a thin-wall metal material, the thin-wall metal material is easy to generate small cracks from the edge, so that the small cracks are spread to the whole material, the energy absorption component is failed, and the lightning protection function is lost. The steel wire 41 can avoid the situation, reduce the probability of failure, and meanwhile, the steel wire has higher durability and stronger reliability.

It will be appreciated that the number and type of wires 41 has a direct effect on the energy absorption. In this embodiment, the steel wires 41 are provided in plural at intervals. Preferably, the steel wires 41 are evenly spaced side by side to ensure the balance of energy absorption. Of course, the diameters of the steel wires 41 can be variously combined, and when the diameters of the steel wires 41 are different, the range of energy absorption and shock absorption can be expanded; when the diameters of the steel wires 41 are the same, the balance of energy absorption can be ensured.

This embodiment provides a specific implementation, which is as follows:

the first abutting body 05 is a first abutting rod, the second abutting body 06 is a second abutting rod, and the upper shock absorbing body 01 is provided with an upper shock absorbing cavity 11. The lower shock absorbing body 02 is provided with a lower shock absorbing cavity 21. The upper shock absorbing body 01 and the lower shock absorbing body 02 are fitted to each other, and one end of the lower shock absorbing body 02 is located in the upper shock absorbing chamber 11.

The damping mechanism 03 is located in the lower damping chamber 21. One end of the buffer mechanism 03 is connected with the lower damping body 02, and the other end abuts against the bottom of the lower damping cavity 21. Two sides of the lower shock absorption body 02, which are positioned at the cavity opening of the lower shock absorption cavity 21, are provided with abutting notches 22. The upper shock absorber 01 is provided with a first abutting hole 13 at a position corresponding to the shock absorption notch. The first abutting rod is arranged on the shock absorption notch, and two ends of the first abutting rod are positioned in the first abutting hole 13. One end of the lower shock absorption body 02 close to the cavity bottom of the lower shock absorption cavity 21 is provided with a strip hole 23. The upper shock absorber 01 is provided with a second abutting hole 14 at a position corresponding to the strip hole 23. The second abutting rod is arranged in the bar hole 23, and two ends of the second abutting rod are arranged in the second abutting hole 14. One end of the steel wire 41 is connected to the first support rod, and the other end is connected to the second support rod.

The buffer mechanism 03 specifically includes a buffer head 31, a connecting pin 33, a buffer spring, and a connecting rod. One end of the connecting rod passes through the lower shock absorber 02 and then is connected with the buffer head 31, and the connecting rod supports against the lower shock absorber 02. The buffer spring is sleeved on the connecting rod, one end of the buffer spring abuts against the buffer head 31, and the other end of the buffer spring abuts against the lower damping body 02. The cushion head 31 is connected to the lower shock absorbing body 02 by a connecting pin 33.

In addition, considering that the position of the deformation and crushing of the steel wire 41 cannot be controlled during the energy absorption and shock absorption process when the steel wire 41 is linearly arranged, and the damage to the surrounding structure may be caused, in the present embodiment, one end of the steel wire 41 close to the first abutting rod is bent many times to form an energy absorption bent portion. And a guide rod is arranged at the bent angle of the bend, and two ends of the guide rod are connected with the lower shock absorber 02.

In summary, the embodiments of the present invention have the following main effective effects:

the buffer mechanism 03 buffers in the anti-seismic process, and the comfort level of riding people is guaranteed. The energy absorption mechanism 04 absorbs energy and absorbs shock when the shock exceeds a certain limit borne by the buffer mechanism 03, so that the lightning protection and energy absorption effects are further improved, and the structure is simple.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A seat energy absorption device is characterized by comprising an upper shock absorption body, a lower shock absorption body, a buffer mechanism, an energy absorption mechanism, a first abutting body and a second abutting body; the upper shock absorption body is provided with an upper shock absorption cavity; the lower shock absorption body is provided with a lower shock absorption cavity; the upper shock absorption body and the lower shock absorption body are sleeved with each other, and one end of the lower shock absorption body is positioned in the upper shock absorption cavity; the buffer mechanism and the energy absorption mechanism are both arranged in the lower damping cavity; one end of the buffer mechanism is connected with the lower damping body, and the other end of the buffer mechanism and the cavity bottom of the upper damping cavity form a damping gap at an interval; a propping notch is formed in the side wall of the cavity opening of the lower damping cavity; the upper shock absorption body is provided with a first abutting hole; the first abutting body is arranged in the abutting gap, and two ends of the first abutting body are positioned in the first abutting hole; the lower shock absorption body is provided with a strip hole; the upper shock absorption body is provided with a second abutting hole; the second abutting body penetrates through the strip hole, and two ends of the second abutting body are positioned in the second abutting hole; one end of the energy absorption mechanism is connected with the first supporting body, and the other end of the energy absorption mechanism is connected with the second supporting body.

2. The seat energy absorber of claim 1, wherein the strap aperture is closer to a floor of the lower cushion chamber than the second retaining aperture.

3. A seat energy absorber according to claim 2, wherein the difference between the distance from said bar hole to the bottom of said lower shock absorbing cavity and the distance from said second retaining hole to the bottom of said lower shock absorbing cavity is not less than the height of said shock absorbing gap.

4. A seat energy absorber according to claim 3, wherein the difference between the distance from said bar opening to the bottom of said lower shock absorbing chamber and the distance from said second retaining opening to the bottom of said lower shock absorbing chamber is greater than the height of said shock absorbing gap.

5. The seat energy absorber of claim 1, wherein the cushioning mechanism comprises a cushioning head and a cushioning body; one end of the buffer body abuts against the cavity bottom of the lower damping cavity, and the other end of the buffer body abuts against the buffer head; the buffer head is connected with the lower shock absorption body.

6. The seat energy absorber of claim 5, wherein an end of the bumper head proximate the opening of the lower cushion chamber defines a crush box; the connecting pin is arranged in the extrusion frame, and two ends of the connecting pin are connected with the lower damping body.

7. A seat energy absorber according to claim 1, wherein said energy absorbing mechanism comprises steel wire; one end of the steel wire is connected with the first abutting body, and the other end of the steel wire is connected with the second abutting body.

8. The seat energy absorber of claim 7, wherein the plurality of wires are spaced apart.

9. A seat energy absorber according to claim 8, wherein said wires are of the same diameter.

10. The seat energy absorber of claim 7, wherein the wire is bent a plurality of times at an end proximate the opening of the lower cushion chamber.