JP7400581B2 - seat pad - Google Patents

Description

The present invention relates to a seat pad. Specifically, the present invention relates to a seat pad having a pad body and a planar back material integrally molded on the back surface of the pad body.

Seat pads are known in which a backing material such as a nonwoven fabric is integrally formed on the backside of a pad body. Specifically, the seat pad is molded as follows. First, the backing material is set in the mold of the pad body. Next, the foamed resin raw material is poured into the mold in which the backing material is set, and heated and foamed. Thereby, the foamed resin raw material is molded in a state where it is integrally adhered to the backing material. The back material is set in the mold by adhering the magnetic material attached to the back material to the magnetic material attached to the mold.

Japanese Patent Application Publication No. 2015-48544

It is necessary to provide a magnetic material on the back material just for adhesion to the mold, which increases the number of parts and the number of installation steps. Therefore, the present invention provides a seat pad in which a backing material can be set in a mold of a pad body with a rational configuration.

In order to solve the above problems, the seat pad of the present invention takes the following measures.

That is, the seat pad of the present invention is a seat pad that has a pad body and a planar back material that is integrally molded on the back surface of the pad body. The backing material has a first piece and a second piece that are connected to each other via a metal fastener. The fastener is a part that is attached to a magnetic body provided in the mold for setting the backing material in a fixed position in the mold.

According to the above configuration, the metal fastener that connects the first piece and the second piece can be rationally made to function as a bonding part with the magnetic material provided in the mold.

Moreover, the seat pad of the present invention may be further configured as follows. The first piece and the second piece are made of different materials.

According to the above configuration, the first piece and the second piece made of different materials can be rationally connected.

Moreover, the seat pad of the present invention may be further configured as follows. Concave air distribution grooves are formed on the back surface of the pad body to allow air to flow in the in-plane direction. The first piece is made of a molded nonwoven fabric that has been thermoformed in advance to match the shape of the first back area in which the air distribution grooves of the pad body are formed and is integrally molded on the first back area. A second piece comprises an unmolded nonwoven fabric that is integrally molded onto a second back area of the pad body that is separate from the first back area.

According to the above configuration, the first piece molded to match the shape of the first back area where the air distribution groove is formed and the non-shaped nonwoven fabric provided in the second back area are appropriately connected by the fastener. While matching, these can be set in a properly positioned state within the mold.

Moreover, the seat pad of the present invention may be further configured as follows. The fastener consists of an eyelet that is penetrated through the overlapping portion of the first piece and the second piece to expose an annular adhesive surface on the surface of the back material facing the mold.

According to the above configuration, the first piece and the second piece can be appropriately connected with the fastener. Furthermore, these can be appropriately fixed in position within the mold by the annular adhesion surface of the fastener exposed on the surface of the back material facing the mold.

FIG. 1 is a perspective view showing a schematic configuration of a seat pad according to a first embodiment. FIG. 3 is an exploded perspective view of the seat pad. FIG. 3 is a rear view of the seat pad. 4 is a sectional view taken along the line IV-IV in FIG. 3. FIG. 5 is an enlarged view of the V section in FIG. 4. FIG. FIG. 3 is a schematic diagram showing how the backing material is set in a mold and the foamed resin raw material is poured into the mold. FIG. 2 is a schematic diagram showing how the foamed resin raw material is heated and foamed by clamping the mold.

EMBODIMENT OF THE INVENTION Below, the form for implementing this invention is demonstrated using drawing.

《First embodiment》
(About the general configuration of seat pad 1)
First, the configuration of a seat pad 1 according to a first embodiment of the present invention will be described using FIGS. 1 to 7. In the following description, when directions such as front, back, top, bottom, left, and right are indicated, the respective directions shown in each figure are referred to.

As shown in FIGS. 1 to 3, a seat pad 1 according to the present embodiment is configured as a pad material for a seat cushion of a vehicle seat. The seat pad 1 has a pad main body 2 made of urethane foam, and a back material 3 made of nonwoven fabric that is integrally formed on the back surface of the pad main body 2.

When the pad body 2 is foam-molded using the mold M, the backing material 3 is first set on the molding surface of the upper mold M2, as shown in FIG. Then, as shown in FIG. 7, after pouring the foamed resin raw material onto the molding surface of the lower mold M1, the back material 3 is formed by heating and foaming the upper mold M2. (upper surface shown).

By integrally molding the back material 3, the strength of the back surface of the pad body 2 of the seat pad 1 is reinforced. As shown in FIG. 4, the seat pad 1 is set on a seat frame F that forms the frame of the seat cushion and is assembled into a frame shape in plan view. The seat pad 1 is assembled onto the seat frame F in a fixed position by pulling the peripheral edge of a seat cover (not shown) that is placed over the seat pad 1 into the seat frame F and fixing the seat cover.

With the above-described assembly, the seat pad 1 functions to elastically absorb the load of the seated person, with the back surface reinforced by the back material 3 widely supported by the seat frame F from the back side. The seat pad 1 is configured to have a blower S connected to the back surface of the seat pad 1 for blowing air inside the vehicle into the seat pad 1.

In connection with this, as shown in FIGS. 1 to 3, a concave connection port 2A is formed on the back surface of the seat pad 1 to be connected to the blower S shown in FIG. The connection port 2A is formed at an intermediate portion of the seat pad 1 closer to the front than the center of the back surface.

Further, on the back surface of the seat pad 1, a plurality of air distribution grooves 2B are formed which are connected to the connection port 2A. These air distribution grooves 2B are formed to extend from the connection port 2A in the left-right direction or in the front direction. These air distribution grooves 2B function to cause the air sent into the connection port 2A to flow in the in-plane direction along the back surface of the seat pad 1.

As shown in FIG. 4, a planar lid member C is attached to the back surface of the seat pad 1 to cover the connection port 2A and each air distribution groove 2B. The lid member C is made of a carpet material whose back surface is coated with a resin. The lid member C is overlapped and bonded to the back surface (general back surface) of the pad body 2 so as to cover the connection port 2A and each air distribution groove 2B. Thereby, the lid member C prevents the wind flowing through the connection port 2A and each air distribution groove 2B from leaking to the back side of the seat pad 1.

As shown in FIGS. 1 to 3, ventilation holes 2C penetrating to the surface of the seat pad 1 are formed at various locations on the path through which the air distribution groove 2B extends. These ventilation holes 2C allow the wind flowing through each ventilation groove 2B to be distributed from the surface of the seat pad 1, thereby improving comfort when sitting.

The connection port 2A, each ventilation groove 2B, and each ventilation hole 2C described above need to maintain their shapes without blocking their ventilation paths even when the seat pad 1 bends under the load of the seated person. There is. Therefore, the back surface material 3 that is integrally molded on the back surface of the pad body 2 is integrally molded in the first back surface area A1 of the entire middle area where the connection port 2A, each ventilation groove 2B, and each ventilation hole 2C are formed. The first piece 3A is made of a molded nonwoven fabric.

Further, in the back material 3, a portion that is integrally molded in a surrounding second back area A2 that is outside the first back area A1 of the pad body 2 is formed by a second piece 3B made of a non-molded nonwoven fabric. There is. The first piece 3A made of the molded nonwoven fabric is thermoformed in advance to match the shape of the first back area A1 having the connection port 2A, each air distribution groove 2B, and each ventilation hole 2C, and then attached to the pad body 2. is subjected to integral molding, and is integrally molded on the first back surface area A1.

Specifically, the first piece 3A covers the general surface (general back surface) of the first back area A1 of the pad body 2, the inner peripheral surface of the concave connection port 2A, and the inner peripheral surface of each air distribution groove 2B. The structure is thermoformed in advance so as to form a surface and an inner circumferential surface (a surface rising toward the front side) of each ventilation passage. Note that the term "molded nonwoven fabric" refers to a fabric material that can be thermoformed using a press machine by impregnating the nonwoven fabric with a synthetic resin material. A non-molded nonwoven fabric is a nonwoven fabric that is not impregnated with a synthetic resin material and cannot be thermoformed using a press.

In addition, the second piece 3B made of non-molded nonwoven fabric is integrally molded with the pad body 2, so that the second piece 3B is shaped to match the second back area A2 along the shape of the molding surface of the upper mold M2, as shown in FIG. and is integrally molded on the second back area A2. As mentioned above, since the backing material 3 is composed of a combination of the first piece 3A made of a molded nonwoven fabric and the second piece 3B made of a non-shaped nonwoven fabric, each ventilation groove 2B, ventilation hole 2C, etc. It is possible to appropriately mold the first back region A1 having a complicated shape and to mold the second back region A2, which does not have a complicated shape, at a relatively low cost.

As shown in FIG. 2, the first piece 3A and the second piece 3B constituting the backing material 3 are overlapped at their adjacent peripheral edges, and the overlapped portions 3C are partially overlapped. They are connected into one piece by being fastened with a plurality of eyelets 3D, which are metal fasteners (see Fig. 3). Then, as shown in FIG. 6, when the joined back material 3 is set in the upper mold M2 of the mold M, metal eyelets 3D are provided on the molding surface of the upper mold M2. By adhering it to the magnetic material Ma, it is configured to be set in a position positioned on the molding surface of the upper mold M2.

With the above configuration, the seat pad 1 rationally uses each metal eyelet 3D, which is a fastener between the first piece 3A and the second piece 3B, as a bonding part with the magnetic material Ma provided on the upper mold M2. It has a configuration that allows it to function effectively. Each eyelet 3D is composed of a so-called "double-sided eyelet", and as shown in FIG. 5, the main body and washer The structure is such that it can be fastened by fitting them together using a tool from both sides.

Each eyelet 3D fastened as described above is configured to expose an annular sticking surface 3D1 on the back surface of the back material 3, that is, the surface facing the molding surface of the upper mold M2 shown in FIG. Therefore, when setting the back material 3 on the upper mold M2 of the mold M, each adhesive surface 3D1 that is widely exposed in an annular shape of each eyelet 3D is properly attached to the magnetic material Ma provided on the molding surface of the upper mold M2. The backing material 3 can be appropriately positioned on the molding surface of the upper mold M2. Here, each eyelet 3D corresponds to a "fastener" of the present invention.

(summary)
To summarize the above, the seat pad 1 according to the present embodiment has the following configuration. Note that the reference numerals given in parentheses below are the reference numerals corresponding to the respective configurations shown in the above embodiments.

That is, the seat pad (1) includes a pad body (2) and a planar back material (3) that is integrally formed on the back surface of the pad body (2). The back material (3) has a first piece (3A) and a second piece (3B) that are connected to each other via a metal fastener (3D). The fastener (3D) serves as a bonding part with the magnetic material (Ma) provided in the mold (M) for setting the backing material (3) in a fixed position in the mold (M). Ru.

According to the above configuration, the metal fastener (3D) that connects the first piece (3A) and the second piece (3B) is connected to the magnetic material (Ma) provided in the mold (M). It can function rationally as a pasting part.

Further, the first piece (3A) and the second piece (3B) are made of different materials. According to the above configuration, the first piece (3A) and the second piece (3B) made of different materials can be rationally connected.

Further, a concave air distribution groove (2B) for flowing air in an in-plane direction is formed on the back surface of the pad body (2). The first piece (3A) is thermoformed in advance to match the shape of the first back area (A1) in which the air distribution groove (2B) of the pad body (2) is formed. Consists of a molded non-woven fabric that is integrally molded. The second piece (3B) consists of a non-molded non-woven fabric that is integrally molded on a second back area (A2) of the pad body (2) that is separate from the first back area (A1).

According to the above configuration, the first piece (3A) is formed to match the shape of the first back area (A1) in which the air distribution groove (2B) is formed, and the second piece (3A) is provided in the second back area (A2). The non-molded nonwoven fabric and the non-molded nonwoven fabric can be appropriately connected by the fasteners (3D) and set in a state where these are appropriately positioned and fixed in the mold (M).

In addition, the fastener (3D) is passed through the overlapping part (3C) of the first piece (3A) and the second piece (3B) and faces the mold (M) of the backing material (3). It consists of an eyelet (3D) that exposes an annular adhesive surface (3D1) on the surface. According to the above configuration, the first piece (3A) and the second piece (3B) can be appropriately connected by the fastener (3D). In addition, these should be properly positioned and fixed in the mold (M) by the annular adhesive surface (3D1) of the fastener (3D) exposed on the surface of the backing material (3) facing the mold (M). I can do it.

《Other embodiments》
Although the embodiment of the present invention has been described above using one embodiment, the present invention can be implemented in various forms shown below in addition to the above embodiment.

1. The seat pad of the present invention may be applied to seats for vehicles such as automobiles and railways, as well as vehicles other than vehicles such as aircraft and ships. In addition to vehicle seats, seat pads are applied to non-vehicle seats such as spectator seats and massage seats installed in various facilities such as sports facilities, theaters, concert venues, and event venues. It's okay to have one. Further, the seat pad may be applied to seat structures other than the seat cushion, such as a seat back, a headrest, and an ottoman.

2. The first piece and the second piece constituting the back material may be made of the same material. The first piece may be made of a non-molded nonwoven fabric as well as a shaped nonwoven fabric. The first piece may be integrally molded on the first back surface region of the pad main body where the air distribution grooves are formed, or may be integrally molded on the general back surface without the air distribution grooves.

The first piece and the second piece refer to those in which the second piece is provided so as to surround the first piece, and those in which the first piece is provided so as to surround the second piece. It may be. Further, the first piece and the second piece may be arranged vertically or horizontally with each other.

3. In addition to eyelets (double-sided eyelets, single-sided eyelets), the fasteners may be crimps, staplers, rivets, or snap buttons. The adhesion surface to be adhered to the magnetic body of the mold of the fastener is not limited to an annular shape, but may be flat or uneven.

1 Seat pad 2 Pad body 2A Connection port 2B Air distribution groove 2C Ventilation hole 3 Back material 3A First piece 3B Second piece 3C Overlapping part 3D Eyelet (fastener)
3D1 Adhesive surface A1 First back area A2 Second back area M Molding mold M1 Lower mold Ma Magnetic material M2 Upper mold S Air blower C Lid member F Seat frame

Claims (3)

A seat pad comprising a pad body and a planar back material integrally molded on the back surface of the pad body,
The backing material has a first piece and a second piece that are connected to each other via a metal fastener,
The fastener is an adhering part to a magnetic body provided in the mold for setting the backing material in a fixed position in the mold ,
A seat pad in which the first piece and the second piece are made of different materials . The seat pad according to claim 1,
A concave air distribution groove for flowing air in an in-plane direction is formed on the back surface of the pad body,
The first piece is made of a molded nonwoven fabric that is thermoformed in advance to match the shape of the first back area in which the air distribution grooves of the pad body are formed and is integrally molded on the first back area,
A seat pad in which the second piece is made of a non-molded nonwoven fabric, and the second piece is integrally molded on a second back surface region of the pad body that is separate from the first back surface region . The seat pad according to claim 1 or claim 2,
A seat pad in which the fastener is formed of an eyelet that penetrates the overlapping portion of the first piece and the second piece and exposes an annular adhesive surface on a surface of the back material facing the mold. .

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