JP4332868B2 - Seat having a seat portion by a planar elastic body - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an improvement in a seat having a seat surface portion made of a breathable planar elastic body.
[0002]
[Prior art]
Conventionally, the sheet | seat which forms a seat surface part from the planar elastic body with air permeability has already been proposed (USP 5,013,089, the same 5,533,789, Japanese translations of PCT publication No. 8-507935).
[0003]
The sheet having a seating surface portion by the planar elastic body can impart air permeability to the seating surface portion, and can be changed in design from a normal sheet. Further, the pad member and the spring member required for constituting the normal seating surface portion are omitted, and further, the weight can be reduced and the space elastic body is thin so that the space efficiency is good.
[0004]
The sheet is provided with a resin plate at the peripheral edge of the planar elastic body, and the resin plate is fitted into a concave groove provided on the axis of the seat frame to fix the end of the planar elastic body, or the sheet elastic Since the peripheral edge of the body is directly wound around the axis of the seat frame and fixed together with the presser plate, it has been proposed that the planar elastic body is stretched and arranged in the frame of the seat frame.
[0005]
However, the resin plate is fitted into a groove provided on the axis of the seat frame to fix the end of the surface elastic body, and the peripheral edge of the surface elastic body is directly wound on the axis of the seat frame. If the screw is fixed together with the presser plate, it is difficult to set the tension constant, and it is difficult to hold the planar elastic body at an appropriate tension and stretch it in the frame of the seat frame without variation.
[0006]
[Problems to be solved by the invention]
An object of the present invention is to provide a seat having a seating surface portion by a sheet-like elastic body that can be easily stretched in a frame of a seat frame without variation with an appropriate tension and can form a seating surface portion. And
[0007]
[Means for Solving the Problems]
In the seat having a seating surface portion by the planar elastic body according to the present invention, the seating surface portion is formed by arranging the planar elastic body in a frame of the seat frame, and a plurality of latching claws are provided. A seat frame protruding at regular intervals, a plurality of slits corresponding to each latching claw are provided on the plate surface, a rising flange portion is provided at least on the outer peripheral edge, and a planar elastic body is fixed from the periphery. It has a substantially quadrilateral frame to hold,
The rising flange portion is engaged with the edge of the seat frame to position and attach the frame body to the seat frame, and the frame body is assembled and fixed integrally with the seat frame with a latching claw inserted through the slit and bent, The sheet-like elastic body is configured to be stretched and installed in the frame of the seat frame.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Referring to the accompanying drawings, the illustrated embodiment is applied to assembling a seat back B and a seat cushion C in a vehicle seat as shown in FIG. The parts B and C of the vehicle seat include substantially quadrilateral frame-like seat frames 10 and 20, planar elastic bodies 11 and 21 forming a seat surface portion, pad members 12 and 22 forming a bank portion, It is comprised from the skin material 13 and 23 which encloses the pad members 12 and 22. FIG.
[0009]
A specific configuration will be described based on the seat back B. As shown in FIG. 2, the metal frame 10a is used as a base frame, and the peripheral edge of the planar elastic body 11 is taken into the inside to surround the planar elastic body 11. The seat back frame 10 (see FIG. 1) in which the frame 11b to be held at a predetermined tension is assembled to the metal frame 10a is used as a base.
[0010]
As the metal frame 10a, a metal frame having a U-shaped cross section obtained by axially bending each substantially quadrilateral piece so as to be adapted to the sitting posture of the seated person can be used. As the frame 10b, a frame formed from a synthetic resin such as polyethylene terephthalate, polypropylene, or polyethylene can be used.
[0011]
As the planar elastic body 11, a fabric having stretchability and air permeability is used. For example, one made of a plurality of elastomeric monofilaments interwoven with a plurality of strands made of fibrous yarns used for interior fabrics, or weaving or weaving 1000-4000 denier elastomeric monofilaments into warps or wefts to stretch, breath It is possible to use a woven or knitted fabric imparted with properties.
[0012]
In order to resin-mold the planar elastic body 11 integrally with the frame body 10b, the planar elastic body 11 is tensioned and supported with a predetermined tension by holding the planar elastic body 11 around the circumference with a chuck, and the peripheral edge of the planar elastic body Is housed in the cavity space of the upper mold and the lower mold, so that the frame body may be injection molded. After the injection molding, the holding portion of the planar elastic body 11 by the chuck may be removed as a surplus portion by heat cutting along the side edge of the frame body 10b so as not to fray.
[0013]
By the injection molding, the frame body 10b is formed as a substantially quadrilateral frame in which the planar elastic body 11 is stretched and supported from the periphery by embedding the peripheral end edge of the planar elastic body 11 in the thickness and integrally forming the insert. do it. At the time of this injection molding, the rising flange portions 10c and 10d engaged with the side surface of the metal frame 10a are integrally molded with resin along both side edges of the frame body 10b.
[0014]
Since the planar elastic body 11 can be stretched and supported by the frame body 10b with a predetermined tension from around the circumference, it can be stretched and installed in the frame of the seat back frame 10 while maintaining a constant tension with no moderate tension.
[0015]
The seat back B can be assembled by using the seat back frame 10 as a base, assembling the pad member 12 and encapsulating the pad member 12 with the skin material 13. The pad member 12 is made of cushion foam such as urethane foam, and can be foamed and molded into a predetermined cross-sectional shape that turns to the front, side or back side of the seat back frame 10.
[0016]
The pad member 12 may be individually formed for each side of the seat back frame 10 or may be formed integrally in a continuous manner according to the frame shape of the seat back frame 10. Further, it is preferable that the front side is greatly bulged so as to assemble a bank portion having good holdability, and in particular, a large bulge is formed from the middle to the lower side of both side portions, and the upper side is largely bulged as a headrest portion.
[0017]
As the skin material 13, any of general-purpose genuine leather, synthetic leather, fabric and the like can be used. The skin material 13 can be sewn into a single continuous body so as to wrap the pad member 12 assembled on each side of the seat back frame 10 from the outside with a substantially C-shaped cross section with the inside open.
[0018]
A plurality of retainers 14, 14... Are welded and fixed to the metal frame 10a as latching claws. The retainers 14, 14... Are provided on the front side of the metal frame 10a to which the frame body 10b is applied at a predetermined interval. On the other hand, the frame 10b is provided with a plurality of slits 15, 15... Corresponding to the retainers 14, 14.
[0019]
A trim cord 17 provided with a plurality of slits 16, 16... Aligned with the slits 15, 15... Of the frame body 10 b along the longitudinal direction is wound around the front surface side of the frame body 10 b and fixed. It is sewn along one terminal on the side to be done. As shown in FIG. 3, a hook 18 made of hard resin may be sewn on the other end of the skin material 13.
[0020]
To assemble the seat back B from the respective members, the rising flange portions 10c and 10d of the frame body 10b are engaged with both side portions of the metal frame 10a, and the frame body 10b is assembled to the metal frame 10a. At this time, the retainers 14 of the metal frame 10a are fitted into the slits 15, 15 of the frame 10b.
[0021]
After that, the trim cord 17 of the skin material 13 is overlapped on the frame body 10b, and the front ends of the retainers 14, 14... Projecting from the slits 15, 15. And the bent end is bent in the outward direction of the metal frame 10a, and the frame 10b and the trim cord 17 are integrally fastened to the front side of the metal frame 10a.
[0022]
The pad member 12 is wrapped with the skin material 13, and the other end of the skin material 13 is wound around the back side of the seat back frame 10, so that the hook 18 is hooked on the flange portion of the metal frame 10a and the terminal is fastened. .
[0023]
In the seat having the seating surface portion formed by the planar elastic body configured as described above, the lumbar support 24 can be provided by the back cover 25 so that the position thereof can be adjusted up and down as shown in FIG. Further, by attaching the back cover 25 to the lower part of the back surface of the seat back frame 10, it can be configured as a seat back B that keeps air permeability on the upper side.
[0024]
Although the above-described embodiment has been described based on the seat back B, the construction of the seat cushion C can be similarly applied.
[0025]
The seat cushion C is attached to bracket plates 27a and 27b that are slidably supported by slide rails 26a and 26b as shown in FIG. 1, and the bracket plates 27a and 27b are covered with exterior covers 28a and 28b. Like the normal seat, the front and rear positions can be adjusted. Further, the entire seat can be configured as a reclining seat by providing the reclining mechanism 29 on one bracket plate 27b.
[0026]
【The invention's effect】
As described above, according to the seat having the seating surface portion by the planar elastic body according to the present invention, the rising flange portion provided on at least the outer peripheral edge of the frame body is engaged with the edge of the seat frame, and the frame body is thus fitted to the seat frame. The frame body is assembled and fixed integrally with the seat frame by hooking claws that are inserted and bent through slits provided on the plate surface of the frame body, and the planar elastic body is stretched within the frame of the seat frame. Because it is equipped, the surface elastic body can be easily stretched in the frame of the seat frame without any variation with a moderate tension, and the seat surface is formed by firmly stretching in the frame of the seat frame together with the frame. can do.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an unfolded sheet having a seating surface portion of a planar elastic body according to the present invention.
FIG. 2 is an enlarged cross-sectional view showing each part constituting a seat having a seat surface made of a planar elastic body according to a preferred embodiment of the present invention.
3 is an enlarged cross-sectional view of the sheet of FIG. 2 taken along line AA in FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Seat frame 10a Base frame 10b Frame 10d Rising flange part of frame 11 Planar elastic body 14,14 ... Seat frame latching claws 15, 15 ... Frame slit

Claims (1)

In the seat having the seating surface portion by the sheet-like elastic body forming the seating surface portion by arranging the planar elastic body in the frame of the seat frame,
A seat frame with a plurality of latching claws protruding at regular intervals, a plurality of slits corresponding to each latching claw are provided on the plate surface, a rising flange portion is provided at least on the outer peripheral edge, and a sheet shape Provided with a substantially quadrilateral frame that holds the elastic body around the circumference,
The rising flange portion is engaged with the edge of the seat frame to position and attach the frame body to the seat frame, and the frame body is assembled and fixed integrally with the seat frame with a latching claw inserted through the slit and bent, A seat having a seating surface portion formed by a planar elastic body, wherein the planar elastic body is stretched and installed in a frame of a seat frame.

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