JP3194392U - Foam molded products for automobile seats - Google Patents

Abstract

The present invention provides a foam molded article for an automobile seat that can prevent a cushion member and a sheet base material from peeling even when a force in a pulling direction is applied. A cushion member made of urethane resin is bonded onto a sheet base material 2 made of hard foamed resin, and at least one or more of the cushion member 3 is disposed on the side of a joint surface 3a with the sheet base material 2. The protrusion 31 is formed, and at least one engagement hole 21 into which the protrusion 31 formed in the cushion member 3 is inserted is formed in the sheet base material 2. Joining with the cushion member 3 is such that the narrow portion 31a and the wide end portion 31b are formed on the leading end side, and the engagement holes 21 formed in the sheet base 2 correspond to the protrusions 31. The protrusion 31 and the engagement hole 21 are engaged with each other because the surface 2a side is the narrow portion 21a and the other surface side is the wide portion 21b. [Selection] Figure 2

Description

  The present invention relates to a foam molded product for automobile seats.

  In general, an automobile seat is provided with a seat cushion on which a rider sits and a seat back erected at the rear of the seat cushion, and these are installed on a floor panel via a seat fixing member. (For example, refer to Patent Document 1). The automobile seat described in Patent Document 1 is configured to form an uneven shape on a seat cushion and attach the seat cushion to a floor panel using the uneven shape.

  In addition, as a seat cushion for sitting, conventionally, for example, a cushion member on which a person sits is formed from urethane resin, and the cushion member is joined to a sheet base material made of hard foamed resin. ing. Here, in order to improve the adhesion between the cushion member and the sheet base material, for example, measures such as applying a texture to the joint surface of the sheet base material or using an adhesive have been taken. However, even when the above measures are taken, when the cushion member is pulled upward, there is a problem that the cushion member is peeled off from the sheet base material.

JP2013-129324A

  On the other hand, for example, as in the seat cushion 100 shown in FIG. 4, a plurality of protrusions 131 are provided on the joint surface side of the cushion member 130 in order to increase the adhesion and joint strength between the seat base 120 and the cushion member 130. It has also been proposed to employ a configuration in which the protrusion 131 is inserted into a plurality of holes 121 provided in the sheet base material 120.

  However, even when the seat cushion 100 as shown in FIG. 4 is used, when the cushion member 130 is pulled upward, the protrusion 131 easily comes out of the hole 121, and the seat base material 120, the cushion member 130, There was a problem of peeling off.

  The present invention has been made in view of the above problems, and foam molding for an automobile seat that can prevent the cushion member and the seat base material from peeling even when a force in the pulling direction is applied to the seat cushion. Provide goods.

  The invention according to claim 1 is a foam molded article for an automobile seat in which a cushion member made of urethane resin is joined to a sheet base material made of hard foam resin, and the cushion member includes the sheet. At least one or more protrusions are formed on the joint surface side with the base material, and at least one or more engagement holes into which the protrusions formed on the cushion member are inserted are formed on the sheet base material. The protrusion has a shape in which the proximal end side is a narrow portion and the distal end side is a wide portion, and the engagement hole formed in the sheet base material corresponds to the protrusion. The projection surface and the engagement hole are engaged with each other by forming the joint surface side with the cushion member as a narrow portion and the other surface side as a wide portion.

  According to the present invention, with the configuration described above, the protrusion formed on the cushion member and the engagement hole formed on the seat base material are engaged with each other. Is increased. Thereby, even if it is a case where a cushion member is pulled upwards, it can prevent that a cushion member and a sheet | seat base material peel.

  In the invention according to claim 2, in the foam molded product for an automobile seat having the above-described configuration, the protrusion formed on the cushion member has a base end side that is a narrow portion and a tip end side that is a wide portion. The engagement hole formed in the sheet base material has a step, and the joint surface side with the cushion member is a narrow portion and the other surface side is a wide portion so that the engagement hole corresponds to the protrusion. The shape is characterized by having a stepped portion.

  According to the present invention, since the protrusion and the engagement hole have the above-described steps, the engagement strength with the engagement hole becomes stronger, and the adhesion between the cushion member and the seat base material Adhesion is further enhanced.

  According to the foamed molded product for an automobile seat according to the present invention, the cushion member is formed with a protrusion having a base end side which is a narrow portion and a tip end side being a wide portion, and the sheet base material has the above-described protrusion. Corresponding shapes of the engagement holes are formed, and the protrusions and the engagement holes are engaged with each other, so that the adhesion and adhesion between the cushion member and the seat base material are improved. Thereby, even if it is a case where a cushion member is pulled upwards, it can prevent that a cushion member and a sheet | seat base material peel.

It is the schematic explaining the automobile seat to which the foaming molding for automobile sheets which is one Embodiment of this invention is applied. BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which illustrates typically the foaming molding for motor vehicle seats which is one Embodiment of this invention, and is sectional drawing which shows the state by which the cushion member was joined on the sheet | seat base material. It is a figure which illustrates typically the foaming molding for car seats which is one embodiment of the present invention, and is a sectional view expanding and showing important section A shown in FIG. It is sectional drawing which shows the conventional foaming molding for motor vehicle seats.

  Hereinafter, an embodiment of a foamed molded product for automobile seats according to the present invention will be described with reference to FIGS. In addition, in the drawings used in the following description, in order to make the features easier to understand, the portions that become the features may be shown enlarged for the sake of convenience, and the dimensional ratios of the respective components are different from the actual ones. There is.

  As shown in FIG. 1, the foamed article 1 for an automobile seat according to the present embodiment is used as a seat cushion on which an occupant sits, for example, in an automobile seat 10. The automobile seat 10 includes a seat back 13 attached to a seat fixing member 12 fixed on a floor panel 11, and a headrest 14 attached to the top of the seat back 13, and is further attached on the seat fixing member 12. As a seat cushion to be used, a foam molded article 1 for an automobile seat is provided, and is used with a cloth or leather cover attached.

  As shown in FIG. 2, the foam molded article 1 for an automobile seat according to this embodiment is formed by joining a cushion member 3 made of urethane resin on a sheet base material 2 made of hard foamed resin, and the cushion member. 3 and the engagement hole 21 formed in the sheet base material 2 are engaged to form a schematic structure. This foamed article 1 for an automobile seat has a seating surface 1A that contacts the lower limbs of a person to be seated, a front surface 1B, a rear surface (not shown), side surfaces 1C and 1D, and a bottom surface 1E. Support the weight by supporting the lower limbs. In addition, although such an automobile sheet foam molded article 1 is not illustrated, for example, a wire, a frame, or the like is inserted into the automobile seat foam molded article 1 and a mounting bracket or the like is joined thereto. The bottom surface 1E (the other surface of the sheet base material 2) is fixed to the floor panel 11 by the mounting bracket.

  The sheet base material 2 is made of a hard foamed resin obtained by molding foamed resin particles and serves as a base material for the automobile seat foam molded product 1 serving as a seat cushion. Used to be fixed to the floor panel 11.

  Examples of the hard foamed resin that forms the sheet substrate 2 include foamed polystyrene, foamed polypropylene, foamed polyethylene, and composite foamed resin of foamed polystyrene and foamed polyethylene.

Here, the density range of the hard foamed resin used for the sheet substrate 2 is not particularly limited, but is preferably in the range of 0.016 to 0.200 g / cm ³ , for example.

  As shown in FIGS. 2 and 3, at least one engagement hole 21 is formed in the sheet base material 2 used in the present embodiment so as to penetrate in the thickness direction of the sheet base material 2. In the illustrated example, the engagement holes 21 are formed at two locations in the width direction, and are not illustrated in the depth direction, but are formed in, for example, several rows.

  Further, the engagement hole 21 is formed in a cross-sectional shape corresponding to the protrusion 31 so that a protrusion 31 formed on the cushion member 3 described later in detail is inserted. That is, the engagement hole 21 in the illustrated example has a narrow portion 21a on the side of the joint surface 2a with the cushion member 3 and a wide portion 21b on the other side, that is, the bottom surface 1E side of the foamed molded product 1 for automobile seats. The anchor shape has a step 21c.

  The shape of the engagement hole 21 in plan view (cross sectional shape) is not particularly limited, and may be a shape that matches the shape of the protrusion 31 described later. In addition to the above, a rectangular shape, a cross shape, a star shape, or the like is also possible. In the present embodiment, even when the shape of the engagement hole in plan view is the above-described shapes, the engagement hole has a shape corresponding to the protrusion whose base end side is a narrow portion and whose distal end side is a wide portion. Thus, as will be described later, the protrusion and the engagement hole can be engaged.

  Further, the sheet base material 2 of the present embodiment will be described in detail in the description of the manufacturing method described later, but is a sheet base material that is a molded body of a hard foamed resin previously foam-molded inside a cushion member molding die. After setting 2, the cushion member 3 can be molded by injecting a urethane resin material into the mold.

  As described above, the cushion member 3 is a member made of urethane resin bonded onto the seat base 2, and the upper surface side thereof is a seating surface 1 </ b> A on which a person sits in the foamed product 1 for an automobile seat.

The urethane resin used for the cushion member 3 is not particularly limited, and any material conventionally used for a seat cushion of an automobile seat can be used. For example, the density is 0.016 to 0.200 g / cm ^3. What is the range of can be used.

  As shown in FIGS. 2 and 3, the cushion member 3 used in the present embodiment has at least one protrusion 31 formed on the side of the joint surface 3 a with the sheet base material 2. In the illustrated example, similar to the engagement holes 21 formed in the sheet base material 2 described above, the protrusions 31 are formed in two places in the width direction, and are formed in, for example, several rows in the depth direction.

  The protrusion 31 is inserted into the engagement hole 21 formed in the sheet base material 2. In the illustrated example, the step 31 c has a base end side that is a narrow portion 31 a and a tip end side that is a wide portion 31 b. It is made into the shape which has. Thereby, in this embodiment, the protrusion 31 formed in the cushion member and the engagement hole 21 formed in the sheet base material 2 are engaged. That is, when a force in the pulling direction that separates the cushion member 3 and the seat base material 2 is applied, the wide portion 31b of the protrusion 31 is locked by the narrow portion 21a of the engagement hole 21, so that the protrusion 31 is engaged. The escape from the hole 21 can be prevented.

  The shape of the projection 31 in plan view (cross-sectional shape) is not particularly limited, as is the case with the engagement hole 21 of the sheet base material 2. In addition to an elliptical shape, a rectangular shape, a cross shape, a star shape, or the like can be used. Similarly to the above, even when the shape of the projection in plan view is the above-described shape, the projection and the engagement hole are formed by forming the base end side as a narrow portion and the tip end side as a wide portion. The engaged state can be obtained.

  In the present embodiment, the protrusion 31 and the engagement hole 21 are not limited to a shape having a step as shown in FIGS. 2 and 3. For example, even if the protrusion 31 and the engagement hole 21 are tapered, the protrusion and the engagement hole Can be brought into an engaged state.

  According to the foam molded article 1 for an automobile seat of the present embodiment, the protrusion 31 formed on the cushion member 3 and the engagement hole 21 formed on the seat base 2 are engaged by the anchor shape as described above. Therefore, the adhesiveness / adhesiveness between the cushion member 3 and the sheet base material 2 is enhanced. As a result, for example, conventional measures such as applying a texture to the joint surface 2a side of the sheet base material 2 made of a hard foamed resin, or applying an adhesive to each joint surface. Can be eliminated, and the amount of processing steps and adhesives can be reduced. Further, according to such a foam molded article 1 for an automobile seat, even if the cushion member 3 is pulled upward by a hand, a force in the tensile direction may be applied. It can prevent that the sheet | seat base material 2 peels.

  In addition, the foam molded product 1 for an automobile seat according to the present embodiment is not shown in the drawings, where at least each of the seating surface 1A, the front surface 1B, and the side surfaces 1C and 1D is made of natural leather, synthetic leather, cloth, or the like. A configuration covered with a cover member can be employed.

  Next, a method for producing the automobile sheet foam molded article 1 of the present embodiment having the above-described configuration will be described.

  In the present embodiment, first, in the foaming step, the foamed resin mold (not shown) is filled with the above-described foamed resin particles to form the sheet substrate 2. At this time, the engagement surface having the step 21c is formed such that the joint surface 2a side with the cushion member 3 is the narrow portion 21a, and the bottom surface 1E side of the foam molded product 1 for an automobile seat which is the other surface side is the wide portion 21b. The sheet substrate 2 is foam-molded while forming at least one hole 21. As the foam molding die used at this time, a conventionally known foam molding die can be used without any limitation.

  Next, in the cushion member molding step, the sheet base material 2 which is a molded body of hard foamed resin previously foam-molded is set inside a cushion member molding die (not shown), and the cushion member molding die is formed. A cushion member 3 is formed by injecting a urethane resin material. At this time, the urethane resin enters the engagement hole 21 formed in the sheet base material 2 made of the hard foam resin, so that the base end side is the narrow portion 31a on the side of the joint surface 3a with the sheet base material 2. At the same time, the cushion member 3 is formed integrally with the seat base material 2 while forming at least one protrusion 31 having a step 31c having a wide end 31b on the front end side. As the cushion member molding die used at this time, a conventionally known urethane molding die can be used without any limitation.

  As shown in FIG. 2, the cushion member 3 is joined and integrated on the sheet base material 2 in the state where the protrusion 31 and the engagement hole 21 are engaged in the anchor shape by the above procedure. Such a foam molded article 1 for an automobile sheet can be produced.

  In the present embodiment, by adopting the above-described method, it is possible to manufacture the automobile sheet foam molded article 1 with improved adhesion and adhesion between the cushion member 3 and the sheet base material 2 with high productivity. It becomes.

  Each configuration in the embodiment described above, a combination thereof, and the like are examples, and the addition, omission, replacement, and other changes of the configuration can be made without departing from the spirit of the present invention. Further, the present invention is not limited by the respective embodiments and examples, and is limited only by the scope of the utility model registration request.

1 ... Foam molded products for automobile seats (automobile seats, seat cushions)
DESCRIPTION OF SYMBOLS 1A ... Seating surface 1B ... Front surface 1C, 1D ... Side surface 1E ... Bottom surface (other surface of sheet base material)
DESCRIPTION OF SYMBOLS 2 ... Sheet base material 2a ... Joining surface 21 ... Engagement hole 21a ... Narrow part 21b ... Wide part 21c ... Step 3 ... Cushion member 3a ... Joining surface 31 ... Protrusion 31a ... Narrow part 31b ... Wide part 31c ... Step 10 Car seat 11 Floor panel 12 Seat fixing member 13 Seat back 14 Headrest

Claims (2)

A foam molded product for automobile seats in which a cushion member made of urethane resin is joined on a sheet base material made of hard foamed resin,
In the cushion member, at least one or more protrusions are formed on the joint surface side with the sheet base material,
The seat base is formed with at least one engagement hole into which the protrusion formed on the cushion member is inserted,
The protrusion has a shape in which the proximal end side is a narrow portion and the distal end side is a wide portion,
Furthermore, the joint surface side with the cushion member is a narrow portion and the other surface side is a wide portion so that the engagement hole formed in the sheet base corresponds to the protrusion. A foam molded article for an automobile seat, wherein the protrusion and the engagement hole are engaged with each other.   The protrusion formed on the cushion member has a shape having a step with a base end side being a narrow portion and a tip end side being a wide portion, and the engagement hole formed in the sheet base is 2. The automobile seat according to claim 1, which has a stepped shape in which the joint surface side with the cushion member is a narrow portion and the other surface side is a wide portion so as to correspond to the protrusion. Foam molded product.

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