JPH0211865Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a sheet having a multi-layer cushioning material structure, such as a cushion-like sheet.

[Background technology] Traditionally, seat cushioning materials (pads) have been made to improve seating comfort by overlapping two pads of different hardness, one semi-hard and one soft, and the overlapping edges of two pads have been used to improve seating comfort. There is a sheet that has a structure of a multi-layer cushioning material, which expresses a constricted shape and has a so-called seat cushion-like form (see Japanese Utility Model Application Publication No. 53-54707).

FIG. 3 shows a conventional example of a seat cushion-like sheet having a multilayer structure. FIG. 3 is a partially omitted cross-sectional view of the seat. A spring 12 is stretched around a frame line 10 fixed to a frame (not shown). Two pads 16 are overlapped. Second pad 16
The top and side surfaces of are covered with cover pads 18. The outer surfaces of the cover pad 18 and the lower pad 14 are covered with covers 20 and 21, respectively.
The overlapping portions of 6 are covered with a constriction, which gives the feel of a sitting cushion.

In a sheet with such a multilayer structure, if the two pads are not positioned in advance, the shape will shift over time. In the seat shown in FIG.
Both pads 14 and 16 are fixed by providing pads 4A and 14B and fitting them together.

However, in such conventional technology, the pad is flexible, so when a person sits on it, the unevenness of the pad collapses under the weight of the person sitting on it. Therefore, there is a drawback that the fit tends to come off due to force in the direction of displacement that is applied when sitting on or standing up from the seat, or when changing posture while sitting, which tends to cause misalignment. In addition, since the uneven portion cannot be formed unless both pads have an appropriate thickness, the sheet becomes thicker, resulting in a disadvantage in terms of space and an increase in cost.

In addition, Utility Model Publication No. 55-52853 and Utility Model Application No. 57-
No. 104959 discloses a technique in which two pads are overlapped and the skins of both pads are locked to a wire embedded in one pad via a ring.

However, in the above technique, since both pads are not connected to each other, there is a risk that the pads may be misaligned with each other.

[Purpose of the invention] Taking the above facts into consideration, the present invention is capable of firmly fixing a multilayer pad with a simple structure, and in particular, reliably prevents displacement even when the pad is thin. The aim is to obtain a sheet with a multilayer pad capable of .

[Configuration of the invention] The seat according to the invention has a first pad and a second pad.
The first pad and the second pad are fixed by embedding insert wires in mutually opposing positions of the pads and joining these insert wires with a hook.

[Embodiment of the invention] FIG. 1 shows an embodiment of a cushion-like sheet according to the invention. FIG. 1 is a partially omitted side longitudinal sectional view of the backrest portion of the seat. A horizontal upper portion of a portal-shaped pipe frame 32 forming the framework of the tonpu-style sheet 30 that sits on the upper portion of the sheet is provided. A frame line 34 is provided on the front side along the pipe frame 32 (on the left side in FIG. 1), and an upper panel 36 is provided on the upper and lower sides of the pipe frame 32.
These frame lines 34 and top panels 36 are attached to the pipe frame 32.

The frame line 34 is for tensioning the springs 38 and 40, and the spring 38 is provided in a substantially vertical plane, and the spring 40 is provided between the upper panel 36 and the upper panel 36. The pipe frame 32, the frame line 34, the upper panel 36, and the springs 38 and 40 constitute a seat support member 41.

A first pad 42 is fitted into the seat support member 41 . This first pad 42 is the frame line 3
4. A thin board part 44 that comes into contact with the front surface of the spring 38, and a pillow-shaped part 46 that is bent into a hook shape from the upper end of this board part 44 and covers the pipe frame 32 and the lower end of the upper panel 36. have. The area below the lower end of the pillow-shaped portion 46 is covered with a backboard 48, so that the interior of the seat support member 41 is hollow.

A thick second pad 50 is placed on the front side of the board portion 44 of the first pad 42. The second pad 50 is overlapped with the first pad 42 to create a cushion-like shape having a constricted portion at the peripheral edge. The first pad 42 and the second pad 50 are formed from a foamable urethane layer or the like.

The first pad 42 and the second pad 50 are secured as described below. That is, frame line 3
A first pad 42 near 4 is provided with an insert wire 52 extending horizontally, and a second pad 50 opposite to this insert wire 52 is provided with a horizontally extending insert wire 52.
An insert wire 54 is provided near the back side of the. The insert wires 52 and 54 are firmly fixed by being integrated during molding of the first and second pads 42 and 50, respectively. The insert wire 52 is connected to the first pad 4 as shown in FIG.
It is inserted through and fixed to a plurality of protrusions 56 that protrude rearward from the protrusions 56, and an opening 58 is formed between the protrusions 56. Further, a hole 60 is provided on the insert wire 54 side in a portion facing the opening 58, and a portion thereof is exposed to the outside through the hole 60 and the opening 58. The first pad 42 and the second pad 50 are fixed by hooking these insert wires 52 and 54 with a plurality of small rings 62 as hooks.

The front and upper surfaces of the second pad 50 are covered with a cover pad 63 which is thinner than the second pad 50. This cover pad 63 is arranged along the outer shape of the second pad 50, and its tip is provided close to the insert wire 54 on the side where it overlaps with the first pad 42.

The outer surfaces of the cover pad 63 and the first pad 42 are covered with seat covers 64 and 66, respectively. The seat cover 64 is provided along the outer surface of the cover pad 63, and the end portion is attached to the cover pad 63.
It is sewn near the tip of 3. On the other hand, the seat cover 66 is provided along the outer surface of the pillow-shaped part 46 from near the insert wire 52 of the first pad 42, and the front end overlaps the seat cover 64 and is sewn to the cover pad 63, and the rear end The end portion is fixed to the lower end of the upper panel 36 by a ring 68.

At the overlapping seam portion of the seat covers 64 and 66 to the cover pad 63, both ends of a plurality of strap loops 70 are also overlapped and sewn to the cover pad 63. This string ring 70 has a wire 72 at the folded part.
is inserted, and this wire 72 is inserted into a small ring 62 that connects the insert wires 52 and 54.
The seat covers 64 and 66 are fixed by hooking them with the .

Next, an example of an assembly procedure for the cushion-like seat 30 shown in this embodiment will be explained. First, the second pad 5
0, fit the cover pad 63 into the seat cover 6
4, cover one end of 66 and the string ring 70 with pad 6
Sew on 3. A wire 72 is inserted through the string ring 70. The second pad 50 and the first pad 42 are overlapped with the hole 60 so that the opening 58 faces each other, and the insert wires 52, 54 and the wire 72 are hooked using the small ring 62. Thereafter, the first pad 42 is fitted onto the seat support member 41 as shown in FIG.

In this way, in this embodiment, the first pad and the second pad are
Since the insert wire is integrated into the pad and fixed with a ring, a strong bonding force can be obtained regardless of compression deformation of the pad due to external force, and even if the pad is thin, the adhesion between the pad and the insert wire is strong. Because of its large size, it is possible to reliably prevent misalignment. Further, since the seat cover is fixed to the insert wire via the string ring and the wire, there is no fear that the seat cover will come off even if a large tensile force is applied from the outside. Furthermore, since the first pad is arranged so as to surround the seat support member, the thickness of the overlapping part with the second pad can be reduced despite the appearance of a large pillow-like part, resulting in a thin cushion-like seat.

In the above embodiment, the backrest portion of the seat has been described, but it goes without saying that the present invention may also be applied to the seat portion. In addition, holes and openings are provided in the pad to expose the insert wires to the outside and they are connected using small rings. However, in cases where the distance between the insert wires is close and the pad is thin, for example, a claw-like A spring clip formed with a section may be passed through the pad in an open state, and the restoring force of the spring will cause the insert wire to engage later.

[Effects of the invention] As explained above, in the seat according to the invention, insert wires are provided in the two pads and they are connected by a hook, so the structure is simple and the external force can be absorbed by the large tensile resistance of the pads. Therefore, the pad can be firmly fixed, and even if the pad is thin, it has the effect of reliably preventing displacement.

[Brief explanation of the drawing]

Fig. 1 is a partially omitted longitudinal cross-sectional view showing an embodiment of the seat cushion-like sheet according to the present invention, and Fig.
The figure is a partially omitted perspective view showing the fixed portions of the first and second pads, and FIG. 3 is a longitudinal sectional view showing the seat part of a conventional cushion-like seat. 41... Seat support member, 42... First pad, 50... Second pad, 52, 54... Insert wire, 62... Small ring.

Claims (1)

[Scope of utility model registration request] In a sheet made of a multi-layer cushioning material, a first pad is placed on the top of a member that supports the sheet, a second pad is placed on top of the first pad, and the second pad is placed on top of the second pad and covered with a cover,
Insert wires are provided at mutually opposing positions of the first pad and the second pad, and the first pad and the second pad are fixed by connecting these insert wires with a hook. A sheet featuring