JP4009707B2 - Seat having a seat surface 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]
A sheet that forms a seating surface portion from a stretchable and breathable planar elastic body has already been known (USP 5,013,089, 5,533,789, JP-A-8-507935).
[0003]
Since the seat is formed of a sheet-like elastic body, the seat has a design change from that of a normal seat, and the pad member and spring member that constitute the seat surface like a normal seat can be omitted. In addition, it is preferable from the viewpoint that air permeability can be imparted and the weight can be reduced and the space elastic body is thin and the space efficiency is good.
[0004]
A sheet having a seating surface portion by a planar elastic body proposed earlier is provided with a resin frame at the end of the planar elastic body, and this resin frame is fitted into a concave groove provided on the axis of the seat frame. The end of the surface elastic body is fixed, or the end of the surface elastic body is turned on the axis of the seat frame as it is and fixed with screws with the presser plate to fix the surface elastic body within the frame of the seat frame. It has been proposed as a stretched arrangement. However, this seat lacks holdability at the time of sitting because it cannot form a bank portion that is greatly raised.
[0005]
[Problems to be solved by the invention]
The present invention can assemble a bank portion that protrudes larger than the surface position of the seat surface portion by a planar elastic body into a robust structure with a simple structure, and can provide a seat surface by a surface elastic body that can maintain good holdability during sitting. It aims at providing the sheet | seat which has.
[0006]
[Means for Solving the Problems]
The present invention is a seat having a planar elastic body that is stretched inside the seat frame and forms a seat surface portion.
Provided at one end of the skin material, a pad member provided with a fitting recess that fits into the seat frame, a skin material that encloses the pad member, a plate that is fixedly formed around the peripheral edge of the planar elastic body, and With a reinforced cord
The plate and the reinforcing cord are overlapped and fastened to the upper surface of the seat frame, the pad member is fitted into the seat frame, and the fastened plate and the reinforcing cord are integrated with the seat frame at a fitting recess. The bank portion is formed by sandwiching and wrapping the pad member with the skin material.
[0007]
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. Each part B, C of this vehicle seat includes a substantially quadrilateral frame-like seat frame 1, 10, a planar elastic body 2, 11 forming each seating surface part, and a pad member 3, forming a large raised bank part. 12 and skin materials 4 and 13 enclosing the pad members 3 and 12.
[0008]
A specific configuration will be described based on the seat back B. As shown in FIG. 2, a metal frame having a U-shaped cross section in which the inside of the frame is opened is used as the seat back frame 1. The seat back frame 1 is formed by bending an axis so that each side of the substantially quadrilateral conforms to the seating posture of the seated person.
[0009]
As will be described later, the seat back frame 1 is provided with a plurality of latching claws 5, 5... Used for fastening and fixing the periphery of the planar elastic body 2 and the end of the skin material 4. These latching claws 5 are so-called “retainers” which are fixedly attached to the outer peripheral edge of the seat back frame 1 by welding and fixing to a frame surface on the side where the planar elastic body 2 is stretched at a predetermined interval. ing.
[0010]
As the planar elastic body 2, a fabric having stretchability and air permeability is used. For example, it is possible to use one formed by a plurality of elastomer monofilaments interwoven with a plurality of strands made of fibrous yarns used for interior fabrics. Further, it is possible to use a woven or knitted fabric in which 1000 to 4000 denier elastomer monofilament is woven or knitted into warp or weft to give stretchability and air permeability.
[0011]
A resin plate 6 such as PET or PP is integrally fixed to the peripheral edge of the planar elastic body 2. The resin plate 6 is formed so as to stretch and support the planar elastic body 2 from the periphery by embedding the periphery of the planar elastic body 2 in the wall thickness and integrally performing insert molding.
[0012]
In the resin plate 6, a plurality of slits 6a, 6b,... Corresponding to the latching claws 5, 5,... Of the seat back frame 1 are formed in the longitudinal direction of the plate surface as long holes by being simultaneously molded with the resin plate 6. It is provided as follows. The resin plate 6 is integrally molded with rising flange portions 6c and 6d that engage with the side surface of the seat back frame 1 along the side edges on both sides.
[0013]
The pad member 3 is made of a cushion foam body such as urethane foam, and is foam-molded into a predetermined three-dimensional shape with a fitting recess 3a that is fitted and fixed to the front, side, and back from the outside of the seat back frame 1. The pad member 3 can be individually formed for each side of the seat back frame 1 and can be formed as a continuous integral body in accordance with the frame shape of the seat back frame 1.
[0014]
The front side 3b of the pad member 3 is formed so as to be greatly raised so as to assemble a bank portion with good holdability. In particular, the lower side from the middle of both sides exhibits a large bulge, and the upper side is formed to largely bulge as a headrest portion.
[0015]
As the skin material 4, any of general-purpose genuine leather, synthetic leather, and fabric can be used. The skin material 4 can be sewn and formed as a whole in one piece so that the pad member 3 assembled on each side of the seat back frame 1 can be wrapped from the outside with a substantially C-shaped cross section with the inside opened.
[0016]
A reinforcing cord 7, a so-called “trim cord”, is sewn to the skin material 4 along a terminal that is wound around and secured to the front side of the seat back frame 1. The reinforcing cord 7 is provided with a plurality of slits 7a, 7b,... Aligned with the slits 6a, 6b,.
[0017]
In order to assemble the seat back B from the above-described members, first, the rising flange portions 6c and 6d of the resin plate 6 are engaged with both side portions of the seat back frame 1, and the resin plate 6 of the planar elastic body 2 is seated back. Arranged on the frame surface of the frame 1. At this time, the latching claws 5, 5... Of the seat back frame 1 are fitted into the slits 6a, 6b.
[0018]
Next, the reinforcing cord 7 of the skin material 4 is overlaid on the resin plate 6 of the planar elastic body 2, and the front ends of the latching claws 5, 5. .. Are fitted into the matching slits 7 a, 7 b, and the protruding end side is bent outwardly of the seat back frame 1, and the resin plate 6 and the reinforcing cord 7 are fastened and fixed together on the front side of the seat back frame 1. Thereby, the planar elastic body 2 can be stretched in the frame of the seat back frame 1 so as to form a seat surface portion. Further, the skin material 4 can be fixed so that one end is fixed to the front side of the seat back frame 1.
[0019]
After attaching the sheet elastic body 2 and one end of the skin material 4 to the seat back frame 1, the pad member 3 is fitted and fixed to each side of the seat back frame 1, and the resin plate 6 and the reinforcing cord 7 are fastened together. Is inserted into the seat frame 1 integrally with the fitting recess 3a.
[0020]
The skin material 4 wraps the pad member 3 and then winds the other terminal around the back side of the seat back frame 1 to fasten the terminal. A hard resin hook 8 is sewn on the skin material 3 along the winding-side end, and the hook 8 is hooked on the flange portion of the seat back frame 1 so that the end can be fastened.
[0021]
As a result, the seat surface portion can be formed of the sheet elastic body 2 with the seat back frame 1 as a base, and a bank portion can be formed which greatly protrudes from the skin material 4 that wraps the pad member 3. The seat back B having a bank portion that protrudes larger than the surface position of the seat surface portion can be assembled into a robust structure with a simple structure.
[0022]
In the embodiment described above, the seat frame 1 having a U-shaped cross section is used. However, as shown in FIG. 4, a rectangular pipe member can be assembled as the seat frame 1 ′. In this case, a backed material (not shown) formed on the back side so as to be opened and closed with a slide fastener or the like may be used as the skin material. Moreover, although embodiment mentioned above demonstrated based on the seat back B, it can assemble similarly as the seat cushion C. FIG.
[0023]
In the seat having the seating surface formed by the planar elastic body configured as described above, the lumbar support 14 is provided so as to be vertically adjustable by the back cover 15 as shown in FIG. By attaching it closer to the lower part, it can be configured as a seat back B with a back cover that maintains air permeability on the upper side.
[0024]
The seat back B and the seat cushion C are attached to bracket plates 17a and 17b, which are slidably supported by slide rails 16a and 16b, and the bracket plates 17a and 17b are covered with exterior covers 18a and 18b to move forward and backward. It can be configured in the same manner as a normal sheet whose position can be adjusted. The bracket plate 17b on one side can be configured as a reclining seat by including a reclining mechanism 19.
[0024]
【The invention's effect】
As described above, according to the seat having the seating surface by the planar elastic body according to the present invention, the plate of the planar elastic body and the reinforcing cord of the skin material are overlapped and fastened to the upper surface of the seat frame, and the pad The plate and reinforcement cord that are fitted together and fastened together with the seat frame are sandwiched between the seat frame and the mating recess, and the pad member is wrapped with the skin material to form the bank portion. The bank portion that protrudes larger than the surface position of the seat surface portion by the cylindrical elastic body can be assembled into a robust structure with a simple structure, and the holdability at the time of sitting can be kept good.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing a seat having a seating surface by a planar elastic body according to the present invention.
FIG. 2 is a partially enlarged cross-sectional view showing each part constituting the sheet in an expanded state.
FIG. 3 is an enlarged cross-sectional view showing the same sheet along the line AA in FIG. 1;
FIG. 4 is a partial cross-sectional view showing another seat frame used to constitute the seat.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1,10 Seat frame 2,11 Planar elastic body 3,12 Pad member 3a Fitting recessed part 4,13 Skin material 6 Plate 7 Reinforcement cord

Claims (1)

In a seat having a planar elastic body that is stretched inside the seat frame and forms a seat surface portion,
Provided at one end of the skin material, a pad member provided with a fitting recess that fits into the seat frame, a skin material that encloses the pad member, a plate that is fixedly formed around the peripheral edge of the planar elastic body, and With a reinforced cord
The plate and the reinforcing cord are overlapped and fastened to the upper surface of the seat frame, the pad member is fitted into the seat frame, and the fastened plate and the reinforcing cord are integrated with the seat frame at a fitting recess. A sheet having a seating surface by a planar elastic body, characterized in that a bank portion is formed by sandwiching and wrapping the pad member with the skin material.

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