CN110682841A - Anti-bending structure of side plate of automobile seat cushion and buffer part thereof - Google Patents

Abstract

The anti-bending structure of the seat cushion side panel of the automobile seat and the buffer member thereof of the present invention include the seat cushion side panel, the rear link bracket and the buffer member. A plurality of circular holes are arranged at intervals along the buffer member, and the plurality of circular holes are connected to form a long The width of the connection between the two adjacent circular holes is smaller than the diameter of the circular holes. The rear link bracket is provided with a circular shaft that is adapted to the circular holes. The rear connecting rod bracket is fixed in any round hole. This solution has a simple structure. When a car collides, especially a rear-end collision, the impact energy transmitted to the side panel of the seat cushion is absorbed by tensile and compressive deformation, so as to prevent the side panel of the seat cushion from being overturned and deformed. It can buffer the impact force of the occupant on the seat cushion, reduce the impact damage of the occupant under different collision speeds, and effectively improve the safety of the car seat. In addition, the solution has easy-to-implement manufacturability and assembly, low cost and strong practicability.

Description

Anti-bending structure of side panel of car seat cushion and its buffer

technical field

The invention belongs to the field of assembly parts of automobile seats, and particularly relates to a bending prevention structure of a side plate of a seat cushion of an automobile seat and a buffer part thereof.

Background technique

With the development of the automobile industry, the passive safety performance of automobiles is constantly improving. As one of the key components of automobiles, car seats not only require reasonable layout and ensure ride comfort, but also focus on ensuring and improving their safety performance. For example, many enterprise technical standards in the automotive industry strictly stipulate the performance requirements that seats must meet in dynamic collisions, especially rearward impacts.

Commonly used front seat cushion side panels with height adjustment function are connected with the seat back through a connecting plate on the one hand, and connected with the seat slide rail assembly through a link mechanism and a link bracket on the other hand.

As the main form of road traffic accidents, when a rear-end collision occurs (as shown in Figure 1), the occupant will not only impact the seat backrest backwards, but also impact the seat cushion frame downwards, and the backrest will be greatly impacted The force will be transmitted to the side plate of the seat cushion through the bolts of the recliner connecting plate, so that the side plate of the seat cushion has a tendency to sink and impact backward. However, since the common front seat with height adjustment function has only one side seat cushion side panel with a height adjuster, the overall rigidity of the side seat cushion side panel is better than that of the seat cushion side panel without the height adjuster on the other side. Under the action of such a great impact force in a rear-end collision, the two ends of the side plate of the seat cushion on the side without the height adjuster sink more seriously, and the impact force transmitted to the rear end of the side plate of the seat cushion is larger than that of the front end, which is easy to cause The side panel of the seat cushion is seriously bent inward or outward in the area near the rear link bracket, which may not only cause tearing of the side panel of the seat cushion, but also affect the height adjustment of the seat cushion. , increasing the risk of injury to occupants and adversely affecting the increasingly important safety concerns.

SUMMARY OF THE INVENTION

In order to overcome the deficiencies of the prior art, one of the objectives of the present invention is to provide a buffer member, which is used as a connecting member of a seat slide rail and can absorb impact energy.

The second purpose of the present invention is to provide an anti-bending structure for a seat cushion side panel of an automobile seat, including a seat cushion side panel, a rear link bracket mounted and fixed on the lower end of the seat cushion side panel, and a rear link bracket for connecting the rear link bracket and the seat cushion side panel. The buffer piece is provided with a plurality of circular holes at intervals along the buffer piece, and the plurality of circular holes are connected to form a long hole. One end of the buffer piece is hinged to the side plate of the seat cushion, and the other end is fixed to the rear link bracket through the circular shaft nested in any circular hole. The solution has a simple structure, and without affecting the seat height adjustment function, when a vehicle collides, especially a rear-end collision, the impact energy transmitted to the side plate of the seat cushion is absorbed through tensile and compressive deformation, preventing the seat cushion Excessive warping and bending deformation of the side panels can buffer the impact force of the occupants on the seat cushion, reduce the impact damage of the occupants under different collision speeds, and prevent the cushion frame from sinking suddenly and rapidly in a rear-end collision to a certain extent. , effectively improve the safety of car seats. In addition, the anti-bending structure of the side plate of the seat cushion of the automobile seat has easy-to-implement manufacturability and assembly, low cost and strong practicability.

The purpose of the present invention adopts following technical scheme to realize:

The buffer member is provided with a connecting end, and the buffer member is provided with a number of circular holes at intervals, and a plurality of the circular holes are connected to form a long hole, and the width of the connection between two adjacent circular holes is smaller than that of all the circular holes. the diameter of the circular hole.

Further, two sides of the connecting end are recessed inward to form a tightening port.

Further, two sides of the buffer member corresponding to the connection between the two adjacent circular holes are further provided with through grooves for providing elastic deformation space.

Further, the two adjacent circular holes are communicated and smoothly transitioned by circular arcs, and the through grooves are circular arc grooves that fit the circular arcs.

The anti-bending structure of the seat cushion side panel of an automobile seat includes a seat cushion side panel, a rear link bracket mounted and fixed on the lower end of the seat cushion side panel, and the above-mentioned buffer, and the rear link bracket is provided with the A circular shaft adapted to a circular hole, the connecting end of the buffer piece is hinged to the side plate of the seat cushion, and the other end is fixed to the rear link bracket through the circular shaft nesting in any of the circular holes.

Further, the buffer member is arranged on the outer side of the side plate of the seat cushion.

Further, both ends of the buffer member are fixedly connected to the seat cushion side plate and the rear link bracket through bolts.

Further, the rear connecting bracket is a triangular connecting piece, the circular shaft is arranged on one corner of the triangular connecting piece, and the side opposite to the circular shaft is fixed to the lower rail of the automobile.

Further, the other side of the rear connecting bracket opposite to the buffer member is provided with a through hole for connecting with the link mechanism.

Further, the circular shaft sleeve is provided with a plastic sleeve for reducing movement noise.

Compared with the prior art, the beneficial effects of the present invention are:

The anti-bending structure of the side plate of the seat cushion of the automobile seat and the buffer part thereof of the present invention comprise the side plate of the seat cushion, the rear link bracket mounted and fixed on the lower end of the side plate of the seat cushion, and the buffer for connecting the rear link bracket and the side plate of the seat cushion The buffer part is provided with a number of circular holes at intervals along the buffer part, and the several circular holes are connected to form a long hole, the width of the connection between the two adjacent circular holes is smaller than the diameter of the circular hole, and the rear link bracket is provided with a circular hole. One end of the buffer piece is hinged to the side plate of the seat cushion, and the other end is fixed to the rear link bracket through the circular shaft nested in any circular hole. The solution has a simple structure, and without affecting the seat height adjustment function, when a vehicle collides, especially a rear-end collision, the impact energy transmitted to the side plate of the seat cushion is absorbed through tensile and compressive deformation, preventing the seat cushion Excessive warping and bending deformation of the side panels can buffer the impact force of the occupants on the seat cushion, reduce the impact damage of the occupants under different collision speeds, and prevent the cushion frame from sinking suddenly and rapidly in a rear-end collision to a certain extent. , effectively improve the safety of car seats. In addition, the anti-bending structure of the side plate of the seat cushion of the automobile seat has easy-to-implement manufacturability and assembly, low cost and strong practicability.

Description of drawings

Figure 1 is the force analysis diagram of the traditional car seat when rear-end collision occurs;

FIG. 2 is a schematic structural diagram of a preferred embodiment of the anti-bending structure of the side panel of the seat cushion of an automobile of the present invention;

Fig. 3 is the left side view of the preferred embodiment of the anti-bending structure of the side panel of the seat cushion of the automobile seat of the present invention;

Fig. 4 is the right side view of the preferred embodiment of the anti-bending structure of the side panel of the seat cushion of the automobile seat of the present invention;

5 is a schematic structural diagram of a preferred embodiment of the rear connecting rod bracket of the present invention;

FIG. 6 is a schematic structural diagram of a preferred embodiment of the rear buffer member of the present invention.

In the figure: 1. The anti-bending structure of the seat cushion side panel of the car seat; 2. The seat cushion side panel; 3. The rear link bracket; 31. The round shaft; 32. The through hole; ; 42, shrinking mouth; 43, through slot; 5, bolt.

Detailed ways

The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, on the premise of no conflict, the embodiments or technical features described below can be combined arbitrarily to form new embodiments. .

The anti-bending structure 1 of the seat cushion side panel of the present invention is shown in FIGS. 2-5 , and includes a seat cushion side panel 2 , a rear link bracket 3 mounted and fixed on the lower end of the seat cushion side panel 2 , and a rear link bracket for connecting the rear link bracket. 3 and the buffer member 4 of the seat cushion side plate 2, the buffer member 4 is provided with a number of circular holes at intervals along the buffer member 4, and the plurality of circular holes are connected to form a long hole 41, and the width of the connection between the two adjacent circular holes is smaller than that of the circular hole. The diameter of the hole, the rear link bracket 3 is provided with a circular shaft 31 that is adapted to the circular hole, one end of the buffer member 4 is hinged to the side plate 2 of the seat cushion, and the other end is fixed to the rear link through the circular shaft 31 nested in any circular hole bracket 3. This solution has a simple structure, and without affecting the seat height adjustment function, when a car collides, especially a rear-end collision, the impact energy transmitted to the seat cushion side panel 2 is absorbed through tensile and compressive deformation, preventing the seat The side panel 2 of the seat cushion has an excessive warping and bending deformation, which buffers the impact force of the occupant on the seat cushion, reduces the impact damage of the occupant under different collision speeds, and at the same time prevents the seat cushion frame from suddenly and rapidly in a rear-end collision to a certain extent. Sink, effectively improve the safety of car seats. In addition, the anti-bending structure of the side panel 2 of the seat cushion of the automobile seat has easy-to-implement manufacturability and assembly, low cost and strong practicability. In order to avoid interference between the buffer member 4 and other components (such as the seat belt buckle), the position of the buffer member 4 needs to be reasonably arranged.

As shown in FIG. 6 , the buffer member 4 in this embodiment is provided with several circular holes at intervals along the buffer member 4. The size of the circular holes is the same, and the distance between the centers of the circular holes between two adjacent circular holes is greater than the diameter of the circular holes. Several circular holes are connected to form a long hole 41, and the connection between adjacent circular holes is a small arc that is bent inward (here the small arc can be a straight line or a small arc that is bent outward, and only needs to be Satisfy that the width between the two sides is smaller than the diameter of the round hole), and the distance between the arc-shaped sides on both sides is smaller than the diameter of the round hole, so that the round shaft 31 can be nested in any round hole at the connection point and the round shaft 31 can be stuck. , the circular shaft 31 will not easily slide into other circular holes.

When the car is in a rear-end collision, under the action of a great impact force, the side panel 2 of the seat cushion on the side without the height adjuster sinks more seriously due to its relatively low stiffness and strength, and is transmitted to the side panel of the seat cushion. 2. The impact force of the rear end obliquely downward is larger than that of the front end, which is likely to cause the seat cushion side plate 2 to be seriously bent inward or outward in the area near the rear link bracket 3, but whether the seat cushion The side plate 2 undergoes severe plastic deformation outward or inward. The common seat cushion side plate 2 has a bending tendency and deformation phenomenon of upward tilting, that is, the upward bending area of the seat cushion side plate 2 and the rear link bracket 3 . The distance between the circular shafts 31 is continuously increasing. In this embodiment, both ends of the buffer member 4 are fixedly connected to the seat cushion side plate 2 and the rear link bracket 3 through bolts 5 , which can prevent the circular shaft 31 from leaving the circular hole laterally. At this time, under the impact of the moment of rear-end collision, the circular shaft 31 of the rear link bracket 3 makes a downward impact motion relative to the elongated hole 41 of the buffer plate, causing the circular shaft 31 to be rapidly pressed to the sides on both sides of the elongated hole 41 below it. The arc-shaped side makes the round shaft 31 slide into the next round hole, and the arc-shaped side is elastically deformed during the sliding process to block and buffer it, effectively slowing the rear-end collision and transferring to the side plate of the seat cushion 2 impact. The smooth transition between the small circular arc and the circular hole enables the circular shaft 31 to slide smoothly into the next circular hole, and will not affect the mitigation of the impact force due to too large resistance and too small elastic deformation of the side of the arc.

Preferably, the buffer member 4 is further provided with through grooves 43 for providing elastic deformation space on both sides of the small circular arc corresponding to the connection between the two adjacent circular holes. The through groove 43 in this embodiment is a circular arc groove that fits the small circular arc. When subjected to an impact force, the circular shaft 31 moves downward along the elongated hole 41, and when the two arc sides are punched, the two arc sides The edge is elastically deformed and squeezed toward the circular arc groove, so as to reduce the impact force of the circular shaft 31 .

The shape, size and arrangement of the elongated holes 41 not only need to ensure that under the action of the great impact force in the rear-end collision, part of the energy can be absorbed by the compression deformation at the constriction of the small arc, but also need to reduce the bending of the seat cushion side plate 2 Make sure that the height adjustment of the seat cushion frame is not affected. When the car seat is in a static state, the circular shaft 31 of the rear link bracket 3 is located in a certain round hole of the elongated hole 41 of the buffer 4; when the car seat needs to adjust the height of the seat cushion, the rear link bracket 3 and the fixed The slide rail mechanism on the vehicle body is kept stationary by welding, and the height of the seat cushion side plate 2 changes with the link mechanism under the action of the height adjuster. The height of the plate 2 changes relative to the elongated hole 41. For example, if the seat cushion side plate 2 moves downward through height adjustment, the buffer member 4 also moves downward, and the circular shaft 31 of the rear link bracket 3 moves downward. It moves upward along the elongated hole 41 relative to the buffer member 4 . The length of the elongated hole 41 needs to ensure that the seat cushion can be adjusted to the highest and lowest positions according to the height-adjusting stroke and trajectory changes of different seats. Moreover, the circular shaft 31 of the rear link bracket 3 can elastically deform the small arc by compressing the arc groove inside the small arc, which is more conducive to the smooth movement of the circular shaft 31 of the rear link bracket 3 in the elongated hole 41 .

In the present embodiment, one end of the buffer member 4 connected to the seat cushion side plate 2 is recessed inwardly on both sides to form a constriction opening 42. When the vehicle is in a rear-end collision, under the action of a great impact force, the seat cushion side plate 2 upwards The distance between the bending area and the rear link bracket 3 is continuously increasing. When the seat cushion side plate 2 is bent under force, the buffer member 4 is stretched. The width is smaller than the other segments, where tensile plastic deformation occurs first and absorbs the impact energy, reducing the impact force on the car seat. The above-mentioned two deformation methods effectively absorb the impact energy transmitted to the side plate 2 of the seat cushion in the rear-end collision, prevent the bending deformation of the seat cushion from being too large, and also prevent the seat cushion frame from sinking suddenly and quickly to a certain extent. Seat safety.

In this solution, the buffer member 4 can be selected according to different seats, combined with the overall arrangement of its seat frame (such as the height adjustment stroke and track, etc.) and the structural form of the seat cushion side plate 2 (such as stiffness distribution), and the elongation rate is greater than 15. The thickness and material of the buffer member 4, the size and shape of the compression opening 42, the length and arrangement of the elongated hole 41, the inner circular hole of the elongated hole 41 are carried out through the tensile test of the material test piece and the finite element virtual simulation analysis. The number and size of the slot, the size of the small arc in the elongated hole 41 and the distance between the two sides, the shape, size and arrangement of the through slot 43 are optimized. Realize the selection of more suitable anti-bending structures for different seats.

The rear connecting bracket in this embodiment is a triangular connecting piece, the circular shaft 31 is arranged on one corner of the triangular connecting piece, and the side opposite to the circular shaft 31 is fixed to the lower rail of the automobile. The other side of the rear connecting bracket opposite to the buffer member 4 is provided with a through hole 32 for connecting with the link mechanism, and the link mechanism in the car seat frame is hinged to the through hole 32 . The circular shaft 31 is sleeved with a plastic sleeve for reducing movement noise, wherein the plastic sleeve can be made of other materials that can reduce noise, and the plastic sleeve can reduce the force of the circular shaft 31 to squeeze the arc during the movement of the circular hole. noise from the sides of the shape.

The above-mentioned embodiments are only preferred embodiments of the present invention, and cannot be used to limit the scope of protection of the present invention. Any insubstantial changes and substitutions made by those skilled in the art on the basis of the present invention belong to the scope of the present invention. Scope of protection claimed.

Claims (10)

1. A buffer member, characterized in that: the buffer member is provided with a connecting end, the buffer member is provided with a plurality of circular holes at intervals, and the plurality of the circular holes are connected to form an elongated hole, and between two adjacent circular holes The width of the connection is smaller than the diameter of the circular hole. 2 . The buffer according to claim 1 , wherein two sides of the connecting end are recessed inward to form a constriction opening. 3 . 3 . The buffer member according to claim 1 , wherein the buffer member is further provided with through grooves for providing an elastic deformation space on both sides of the buffer member corresponding to the connection between the two adjacent circular holes. 4 . 4 . The buffer according to claim 3 , wherein the two adjacent circular holes communicate with each other through a circular arc and transition smoothly, and the through groove is a circular arc groove that fits the circular arc. 5 . 5. The anti-bending structure of the seat cushion side panel of an automobile seat, characterized in that it comprises a seat cushion side panel, a rear link bracket mounted and fixed on the lower end of the seat cushion side panel, and the buffer according to any one of claims 1-4. The rear link bracket is provided with a circular shaft adapted to the circular hole, the connecting end of the buffer member is hinged to the side plate of the seat cushion, and the other end is nested with any of the circular shafts through the circular shaft. The hole is fixed to the rear link bracket. 6 . The anti-bending structure of the seat cushion side panel of an automobile seat according to claim 5 , wherein the buffer member is arranged on the outer side of the seat cushion side panel. 7 . 7 . The anti-bending structure of the seat cushion side panel of an automobile seat according to claim 5 , wherein both ends of the buffer member are fixedly connected to the seat cushion side panel and the rear link bracket by bolts. 8 . 8 . The anti-bending structure of the side panel of an automobile seat cushion according to claim 5 , wherein the rear connecting bracket is a triangular connecting piece, and the circular shaft is arranged on a corner of the triangular connecting piece. 9 . , and the side opposite to the circular shaft is fixed on the lower rail of the automobile. 9 . The anti-bending structure of the side panel of a seat cushion of an automobile according to claim 5 , wherein the other side of the rear connecting bracket opposite to the buffer member is provided with a connecting rod for connecting with the link mechanism. 10 . through hole. 10 . The anti-bending structure of the side panel of a seat cushion of an automobile according to claim 5 , wherein the circular shaft sleeve is provided with a plastic sleeve for reducing movement noise. 11 .

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