JP3672251B2 - Automotive seat cushion - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a seat cushion down automotive passenger sits.
[0002]
[Prior art]
In recent years, when an infant or the like is put on a car, it has been obliged to put it on a child seat attached to the rear seat. It has come to be provided. The rear seat cushion generally has a configuration in which a seat frame consisting of a combination of a plurality of rods bent appropriately is arranged inside a foamed urethane cushion material, but the rear end of the upper surface of the cushion material In many cases, a bank portion is formed to support the occupant's buttocks from behind corresponding to one seating portion. The lower anchor is arranged in a pair of left and right inside the bank portion and is fixed to a seat frame or the like. That is, the occupant's buttocks seated on the seat portion of the rear seat cushion is located between the left and right lower anchors.
[0003]
[Problems to be solved by the invention]
By the way, when a rear collision occurs due to a rear-end collision of an automobile, the impact at that time causes acceleration of the vehicle body forward and inertia of the occupant rearward. When a rear collision occurs, the occupant's buttocks can be received by the bank of the cushion material. However, in the case of a strong impact, the bank has a dent and the buttocks receive pressure from the lower anchor. In that case, not only did the passenger feel discomfort, but the buttocks could be damaged.
[0004]
Thus, the present invention aims at the buttocks and the like during a rear-end collision to provide a seat cushion down for a motor vehicle with a structure in which reduction of pressure is achieved to receive from lower anchor.
[0005]
[Means for Solving the Problems]
The seat cushion for automobiles of the present invention has a seat frame disposed inside the cushion material, and a bank portion extending in the left-right direction of the vehicle body corresponding to the seating portion is formed at the rear end portion of the upper surface of the cushion material. In a vehicle seat cushion in which a pair of left and right lower anchors fixed to a seat frame is disposed inside the part, the polymer part foam extends from the inside of the bank part along the bank part and is harder than the cushion material. comprising support pads is provided between the pair of left and right lower anchor further comprises at least a front surface is disposed in front of the lower anchor with proximity to the lower anchor, further is supported by the seat frame Rutotomoni, at least the front surface However, it is embedded in the state covered with the cushion material which comprises a bank part .
[0006]
According to the present invention, when a rear collision or the like occurs and the bank portion is pressed by the occupant's buttocks, the pressure from the buttocks is received by the support pad, and deformation of the bank portion is suppressed. For this reason, it is difficult for the pressure from the lower anchor to reach the buttocks, and the pressure received by the buttocks from the lower anchor can be reduced.
[0007]
As a form of supporting the support pad with the seat frame, there is a form in which a groove that fits into the seat frame is formed in the support pad, and the groove is fitted into the seat frame by arranging the support pad on the front side of the seat frame. . According to this, since the support pad which receives the pressure from the heel portion can be received by the seat frame, the pressure from the heel portion can be received with high rigidity, thereby increasing the deformation suppressing effect of the bank portion.
[0008]
Automotive seat cushion down to the present invention, the support pad is temporarily fixed to the sheet over preparative frame, then it was set in a foaming mold, then filled by foaming foam material is a material of the cushion material into the foaming mold, It can be manufactured by integrating the cushion material and the support pad .
[0009]
According to this manufacturing method, the support pad can be disposed at an appropriate position by temporarily fixing the support pad to the seat frame. Further, since the support pad is integrated with the cushion material, the support pad is prevented from moving, and the effect of suppressing deformation of the bank portion is stably obtained.
[0010]
In addition, as a polymer resin foam which is a material of the support pad of this invention, a foamed polypropylene, a foamed polyethylene, a foamed polystyrene, a foamed polyurethane, etc. are used suitably. The support pad integrated with the cushion material by the above manufacturing method may adhere to the cushion material depending on the material, or may adhere to the cushion material but may not be in an adhesive state. It is defined as an integrated state.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a plan view showing a structure of a rear seat cushion to which an automobile seat cushion according to an embodiment is applied, FIG. 2 is a partial perspective view thereof, and FIG. 3 is a longitudinal sectional view thereof. As shown in FIG. 1, the rear seat cushion has seating portions 1 on the left and right. Further, a seat back (not shown) is supported on the rear seat cushion so as to be tiltable via a side hinge 11 shown in FIG. 1 to 3, reference numeral 10 denotes a seat frame, and 20 denotes a cushion material formed of a foam material such as urethane foam. The seat frame 10 is composed of a combination of a plurality of rods that are appropriately bent. As shown in FIGS. 1 and 2, a pair of left and right rear end portions that are arranged at the rear end portion and extend in the left-right direction of the vehicle body. It has a rod 12.
[0012]
As shown in FIG. 2, the rear end rod 12 has portions corresponding to both sides of the left and right seating portions 1 bent in a concave shape, and a convex portion 14 is formed between the concave portions 13. And the front-end | tip part of the lower anchor 30 to which a child seat is attached is arrange | positioned at the recessed parts 13 on either side. The lower anchor 30 has a U-shape in a plan view that opens rearward, and the tip portion is bent upward as shown in FIG. The lower anchor 30 is fixed to the vehicle body floor via a bracket (not shown). Further, the lower anchor 30 on the end side is also fixed to the side hinge 11 as shown in FIG. An occupant's buttocks seated on the seating portion 1 is located between the left and right lower anchors 30.
[0013]
A bank portion 21 extending in the lateral direction of the vehicle body corresponding to the left and right seating portions 1 is formed at the rear end portion of the upper surface of the cushion member 20, and the occupant's buttocks are supported from behind by the bank portion 21. . The lower anchor 30 is disposed rearward of the rear end rod 12, and the front end thereof is inserted into the bank portion 21 of the cushion material 20.
[0014]
Support pads 40 extending along the bank portion 21 are embedded in the left and right bank portions 21 while being supported by the rear end rod 12. As shown in FIGS. 4A and 4B, these support pads 40 have an elongated rectangular parallelepiped shape, a longitudinal section is long in the vertical direction, and an upper portion of the front surface is curved in an R shape. The material of the support pad 40 is, for example, foamed polypropylene and is harder than the cushion material 20.
[0015]
As shown in FIG. 4A, on the rear surface of the support pad 40, there are one lateral groove 41 extending in the longitudinal direction and four oblique grooves 42a, 42b, 42c, 42d extending obliquely downward from the lateral groove 41. Is formed. These grooves 41, 42 a to 42 d have a depth that is about half of the thickness of the support pad 40. As shown in FIG. 3, the support pad 40 is disposed in front of the lower anchor 30 and further on the front side of the rear end rod 12. Then, as shown in FIG. 5, the lateral groove 41 and the oblique grooves 42 b and 42 d are fitted to the convex portion 14 of the left rear end rod 12, and the lateral groove 41 and the oblique groove are fitted to the convex portion 14 of the right rear end rod 12. The grooves 42a and 42c are fitted. In this state, the left and right support pads 40 are disposed between the pair of left and right lower anchors 30 as shown in FIG.
[0016]
The above is the seat cushion of the present embodiment. Next, a method for manufacturing the seat cushion will be described.
First, the support pads 40 are attached to the left and right rear end rods 12 of the assembled seat frame 10, respectively. For this purpose, as shown in FIG. 5, the lateral groove 41 and the oblique grooves 42b and 42d are fitted to the convex portion 14 of the left rear end rod 12, and the lateral groove 41 and the convex portion 14 of the right rear end rod 12 are fitted. The oblique grooves 42a and 42c are fitted. Then, in order to prevent the support pad 40 from falling off, the support pad 40 is attached to the rear end rod 12 with a non-woven tape or the like and temporarily fixed. Next, the seat frame 10 to which the support pad 40 is temporarily fixed is set in the foaming mold of the cushion material 20, and liquid urethane, which is the material of the cushion material 20, is filled into the foaming mold and foamed. Thus, the seat frame 10 is disposed inside the cushion material 20, and a rear seat cushion in which the support pad 40 is integrated with the cushion material 20 is obtained.
[0017]
According to the rear seat cushion of the present embodiment, when a rear collision occurs and the bank portion 21 is pressed by the occupant's buttocks, the pressure from the buttocks is received by the support pad 40, and deformation of the bank portion 21 is suppressed. Is done. That is, the heel portion is guarded by the support pad 40, the dent of the bank portion 21 is suppressed, and the heel portion does not approach the lower anchor 30. For this reason, the pressure from the lower anchor 30 does not easily reach the buttocks, and the pressure received by the buttocks from the lower anchor 30 can be reduced. Further, since the support pad 40 is fitted from the front side of the rear end rod 12 of the seat frame 10, the support pad 40 that receives pressure from the collar portion is received by the seat frame 10. Therefore, the support pad 40 can receive the pressure from the heel portion with high rigidity, and the deformation suppressing effect of the bank portion 21 is increased.
[0018]
Further, according to the above manufacturing method, by temporarily fixing the support pad 40 to the seat frame 10, the support pad 40 is disposed at an appropriate position, that is, between the pair of left and right lower anchors 30 and in front of the lower anchor 30. can do. Moreover, since the support pad 40 is integrated with the cushion material 20, the movement of the support pad 40 is prevented, and the deformation suppressing effect of the bank portion 21 is stably obtained.
[0019]
【The invention's effect】
As described above, according to the present invention, the support pad made of a polymer resin foam harder than the cushion material is provided inside the bank portion of the cushion material between the pair of left and right lower anchors and on the front side of the lower anchor. When the bank is pressed by the occupant's buttocks, the pressure from the buttocks is received by the support pad, thereby suppressing the deformation of the bank and the buttocks are lower anchors. Relieving the pressure received from
[Brief description of the drawings]
FIG. 1 is a plan view of a rear seat cushion to which an automobile seat cushion according to an embodiment of the present invention is applied.
FIG. 2 is a partial perspective view of the rear seat cushion.
FIG. 3 is a longitudinal sectional view of the rear seat cushion.
4A is a rear view of the support pad, and FIG. 4B is a view in the direction of arrow B in FIG. 4A.
FIG. 5 is a front view of a state in which a support pad is temporarily fixed to a seat frame.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Seating part 10 ... Seat frame 20 ... Cushion material 21 ... Bank part 30 ... Lower anchor 40 ... Support pad 41 ... Lateral groove 42a, 42b, 42c, 42d ... Diagonal groove

Claims (2)

A seat frame is disposed inside the cushion material, and a bank portion extending in the left-right direction of the vehicle body corresponding to the seating portion is formed at the rear end of the upper surface of the cushion material, and is fixed to the seat frame inside the bank portion. In a vehicle seat cushion in which a pair of left and right lower anchors are disposed,
A support pad made of a polymer resin foam that extends along the bank and is harder than the cushion material is disposed between the pair of left and right lower anchors, and further close to the lower anchor. at least the front surface is disposed in front of the lower anchors, further characterized in that said supported on the seat frame Rutotomoni, is at least the front, it is embedded in a state of being covered by the cushion material constituting the bank portion with An automotive seat cushion.   The groove of the support pad is formed in the seat frame, the support pad is disposed on the front side of the seat frame, and the groove is fitted in the seat frame. Car seat cushions.

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