JP2001017279A - Foam-molded body incorporating fastening member and foam molding mold therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To detachably attach a skin material on a formed body by integrally incorporating a fastening member, so that an engaging element protruding from the surface of the fastening member faces outside, on the sidewall of a drawing groove formed in a curve on the part covered by a skin material of a foam-molded body. SOLUTION: A drawing groove 21 in a U-letter form is formed on the surface of a foamed molded body 20, namely, on the part to be covered by a skin material. While this drawing groove 21 has a facing sidewall, a part of a slub urethane foam 4 as a fastening member F is embedded along the other sidewall. The fastening member F is integrally incorporated with the foamed molded body 20 in the longitudinal condition where engaging elements 2 are facing outward against the sidewall. The fastening member F is hard to bend in the width direction but tends to be bent relatively freely in the length direction or in the longitudinal condition.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a foam molded article which can be used for seats and the like, and more particularly to a foam molded article in which a fastening member for engaging a skin material covering the foam molded article is integrated.

[0002]

2. Description of the Related Art In general, automobiles and other vehicles, aircraft seats, home and office chairs, etc. are generally formed by assembling a skin material with a foamed molded article such as urethane.
A fastening member fixed to the foam molding is used for assembling the foam molding and the skin material.

[0003] As shown in FIG. 1, this fastening member F has a large number of engaging elements 2 protruding from the surface of a sheet material 1, and a projection 3 is provided at the tip of the element 2. Slab urethane foam 4 is laminated on the back surface.

When a cloth material having a loop portion engageable with the fastening member F is pressed, for example, the projection 3 engages with the loop portion by being entangled with the loop member. When the cloth material is pulled apart, the engagement between them is released.

[0005] When such a fastening member is fixed to a foamed molded product, a skin material having a loop portion is pressed thereon, whereby the skin material is engaged with the foamed molded product, thereby constituting a seat. be able to.

[0006] A method of fixing the fastening member to the foamed molded body is to use a linear guide member having a U-shaped cross section as shown in, for example, Japanese Patent No. 2704589, in which a guide member is provided. The fastening element is placed with the engaging element inside, placed in the foaming mold, and the foaming stock solution is poured in from above, and when it is molded, the engaging element is oriented upward (that is, flat). The fastening member (the slab urethane foam portion) is fixed integrally with the foamed molded body.

[0007] By using the guide member as described above,
The present invention is characterized in that it is possible to prevent the foaming stock solution from flowing to the engaging element of the fastening member and causing the engaging element to not function effectively.

[0008]

However, when such a linear guide member is used, the fastening member can be used only linearly. Therefore, the position of the fastening member is limited.

[0009] The fastening member is usually formed in the foamed molded body and located in the recessed groove. However, since the engaging element faces upward as described above, the skin material is transferred to the fastening member in the groove. Once engaged, the skin material cannot be adjusted, and for adjustment, the skin material must be peeled off from the fastening member once and the skin material must be pressed again against the fastening member.

Further, this guide member prevents the undiluted foaming liquid from penetrating into the engaging element of the fastening member. However, a separate guide member must be disposed in the foaming mold. Here, if an error occurs in the arrangement position, not only the skin material cannot be assembled at a predetermined position, but also the function as a seat may be impaired.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a foam molded article having a fastening member which is curved and is integrated with the foam molded article along the shape of the drawing groove of the foam molded article.

Another object of the present invention is to provide the above-mentioned foamed molded article having a fastening member having a continuous length required for engagement with a skin material.

It is a further object of the present invention to provide the above-mentioned foam molded article which does not require adjustment of the attachment of the skin material to the foam molded article.

Still another object of the present invention is to provide a foam molding die for molding the above foam molded article.

Still another object of the present invention is to provide the above-mentioned foaming mold in which a fastening member can be accurately arranged.

[0016]

According to the present invention, there is provided a foam molded article covered with a skin material.
A foam molded article having a fastening member incorporated therein,
A fastening member is integrally incorporated into a portion of the foamed molded product covered by the skin material so that engagement elements protruding from the surface of the fastening member face outward on the side walls of the drawn-in grooves formed in a curved line. It is a foam molded article. By engaging the engagement element of the fastening member with the back surface of the skin material, the skin material is removably assembled to the foam.

The fastening member is incorporated into at least a part of the side wall of the drawing groove of the foam molded article. Also,
The fastening member is incorporated into at least one of the side walls of the foam molded body facing the recessed groove.

Preferably, the projection of the engaging element of the fastening member faces downward. By facing downward, the skin material can be brought into close contact with the foamed molded body just by pressing the skin material from above toward the fastening member.

The foaming mold of the present invention is a foaming mold for molding a foamed article covered with a skin material, and a curve is formed on the inner surface of the foaming mold to the foamed article to be molded. A drawing groove forming portion for forming a drawing groove to be drawn is provided, and a fastening member for detachably engaging the skin material with the foam molded body is provided on a side surface of the drawing groove forming portion, and an engaging element protruding from the surface thereof is provided. This is a type in which a storage section for storing inward is formed.

When the fastening member is stored in the storage portion, the foaming liquid is poured into the foaming mold from above, and the foaming is performed. When the foaming molding is performed, the fastening member moves along the side surface of the groove and the engaging element faces outward. There is an accommodating portion on at least a part of the side surface of the recessed groove forming portion, which is integrated with the foamed molded body in the folded state. Further, there is a storage portion on at least one of the side surfaces on both sides of the recess groove forming portion. The storage section may be a guide rail along the recess groove forming section.

It is desirable that the edge of the fastening member contacts the side wall of the storage portion when the fastener is stored in the storage portion.

[0022]

FIG. 2 is a plan view of a foam molded article 20 constituting a seat, and FIG. 3 is an end view of the foam molded article of FIG. 2 cut at the center.

The surface of the foam forming body 20 of the present invention, that is,
A U-shaped curved recess 21 is provided in a portion covered by a skin material (not shown). This recess groove
21 has facing side walls, as shown in FIG. 3, but along one of the side walls, the fastening member F
A part of the slab urethane foam 4 is embedded, and the fastening member F is integrated with the foam molded body 20 in a vertically placed state in which the engaging element 2 faces outward with respect to the side wall (FIG. 3 (see partially enlarged view).

As shown in FIG. 1, the fastening member F is difficult to bend in the width direction, but in the length direction (as shown by the broken line), that is, in the vertical position, It has the property that it can be bent relatively freely.

Therefore, even if the drawing groove 21 has not only a straight portion but also a curved portion 21 ′, 22 ″, a curve is drawn by setting the fastening member F in the vertical position as described above. It can be installed along the side wall of the recess 21.

The fastening element 2 is placed on the foam molded body 20 in which the fastening member F is incorporated along the drawing groove.
When a skin material (not shown) having a loop portion that engages with the device is arranged and pressed from above (in the direction of arrow a in FIG. 1 and FIG. 3), the loop portion does Then, the loop portion and the engagement element engage with each other, and the assembly of the skin material is achieved.

At the time of the assembling, the skin material is foamed
If the loosened skin material portion is pressed down from above even if it is loosened without contacting the surface, the skin material will further advance into the groove, and will not loosen, and it will adhere to the surface of the foam molding 20. become.

On the other hand, when the skin material is to be lifted (in the direction of the arrow b in FIGS. 1 and 3), the loop portion of the skin material surely engages with the engaging element 2, so that the loop is formed by sitting on the seat. Even if a large force is applied to the material, the engagement is not released. Even if it is released, it can be restored by simply pressing the skin material from above.

The projection 3 at the tip of the engaging element 2 of the fastening member F usually has a large conical shape, and the above operation can be sufficiently achieved with the conical projection. However, as shown in FIG. The overhang is more effective (the overhang is referred to as “the protrusion is facing downward”).

As described above, the fastening member F is
Conventionally, it is located on the curved part of the recess groove.
The engagement between the skin material and the foam molded body can be surely achieved even where the engagement is not performed.

The fastening member F may be provided along the entire length of the recess groove, or may be provided along a groove corresponding to a place where a force is applied to the skin material.

In this embodiment, the fastening member is assembled on one side wall of the recess groove, but it may be provided on both side walls. Thereby, the skin material can be more securely assembled.

FIG. 4 is an end view of the molding die 30 for molding the foam molded article 20 of the present invention when cut at the center.
This molding die 30 is similar to a conventional molding die, in which an undiluted foaming solution is charged, a lid is formed, and foaming is performed. A recessed groove forming portion 31 for forming a recessed groove in the foamed molded body includes: It is in the form of a protrusion and is provided inside.

A guide rail 32 having a U-shaped cross section is disposed on the side surface of the recess groove forming portion 31 with the release portion facing outward (inward in the horizontal direction in the figure). In this embodiment, the guide rail 32 is a separate member.
It may be one.

The guide rail 32 is inserted into the groove forming portion 32.
May be provided on both sides. If provided on both sides in this way, after forming, the fastening member will be attached to both side walls facing the groove.
The engagement elements will be assembled so that they face each other.

The guide rail 32 includes a fastening member F
The slab urethane foam 4 is partially accommodated by the guide rail 3
Sticking out of two. By doing so, the slab urethane foam 4 is embedded in the foam molded body after molding,
Both can be integrated.

It is desirable that the upper and lower side walls of the guide rail 32 be in contact with the edge of the fastening member F. As a result, the undiluted foaming liquid does not enter the inside of the guide rail, and the engaging element is not embedded in the foam. Furthermore, even if the draw groove draws a more complicated curve,
The fastening member F is securely stored in the guide rail.

Although the guide rail 32 is provided along the entire length of the recess groove 31, it may be provided at a particularly required portion or a curved portion.

Using this foaming mold 30, a foamed molded body
In order to form 20, the guide rail 32 is provided in the drawing groove 31 of the foaming mold 30, and the fastening member F is arranged therein with the engaging element inside. Then, the foaming solution is put into the mold 30 and the lid is closed. After foaming and hardening, open the lid and take out the foam molded body, cover the skin material on it as described above, and press down the area near the lead-in groove from above,
The fastening member and the skin material are engaged. Thus,
The seat made of the foam molded body with the skin material assembled is completed.

Although the above embodiment has been described with reference to a seat, it will be apparent to those skilled in the art that the present invention is not limited to a seat but can be applied to a foam molded article to which a skin material is assembled.

[Brief description of the drawings]

FIG. 1 is a perspective view of a fastening member.

FIG. 2 is a plan view of a foam molded article of the present invention constituting a seat.

FIG. 3 shows an end view of the foam molded article of FIG. 2 cut at the center.

FIG. 4 is an end view of the foam molding die of the present invention for molding a foam molded article when cut at the center.

[Explanation of symbols]

 F Fastening member 20 Foam molded body 21 Inlet groove 24 Side wall 30 Foam mold 31 Inlet groove forming part 32 Guide rail

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI theme coat ゛ (reference) B29L 31:58 F term (reference) 4F202 AA42 AD05 AD19 AG20 AG21 AH07 AH26 CA01 CB01 CB12 CK11 CQ01 CQ05 4F204 AA42 AD05 AD19 AG20 AG21 AH07 AH26 EA01 EA04 EB01 EB12 EF05 EF49 EK24

Claims (12)

[Claims] 1. A foam molded article having a fastening member incorporated therein, the foam molded article being covered by a skin material, wherein a recessed groove formed by drawing a curve in a portion of the foam molded article covered by the skin material. The fastening member is integrated with the side wall so that the engaging element protruding from the surface of the fastening member faces outward, and the engaging element of the fastening member and the back surface of the skin material are engaged with each other. , Wherein the skin material is assembled to the foam. 2. The foam molded article according to claim 1, wherein the fastening member is incorporated into at least a part of a side wall of the recess. 3. The fastening member is incorporated into at least one of the side walls facing the recess.
The foam molded article according to claim 1 or 2. 4. The foam molded article according to claim 1, wherein the projection at the tip of the engagement element faces downward. 5. The foam molded article according to claim 1, wherein the seat is formed by the foam molded article. 6. The foam molded article according to claim 5, wherein said groove is formed near the periphery of said seat portion. 7. The foam molded article according to claim 6, wherein said groove is located near a periphery of a flat portion of said seat portion. 8. A foam molding die for molding a foam molded product covered with a skin material, wherein a drawing groove which forms a curve in the foam molded product to be molded is formed in an inner surface of the foam molding die. A storage portion provided with a groove forming portion, and a fastening member for removably engaging a skin material with the foamed molded body is provided on a side surface of the recessed groove forming portion, and an engaging element protruding from the surface thereof is accommodated inwardly. The fastening member is housed in the storage portion, and a foaming undiluted solution is poured into the foaming mold from above, and when the foaming molding is performed, the fastening member moves along the side wall of the groove and the fastening member. The integrated element is integrated into the foam molded body with the element facing outward,
However, a foaming mold. 9. The foam molded article according to claim 8, wherein said storage portion is formed on at least a part of a side surface of said recessed groove forming portion. 10. The foam molded article according to claim 8, wherein the storage portion is formed on at least one of the side surfaces on both sides of the drawing groove forming portion. 11. The foam molded article according to claim 7, wherein said storage section is a guide rail arranged along said recessed groove forming section. 12. The foam molded article according to claim 8, wherein when the fastening member is stored in the storage portion, an edge of the fastening member contacts a side wall of the storage portion.