JPH0642343U - Vehicle sun visor - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a vehicle sun visor that is easy to manufacture and has excellent cushioning properties and long-term shape retention. [Structure] Laminated sheets 3 and 3 formed by adhering a propylene-based resin foamed sheet 4, a thermoplastic resin film or sheet 5, and a propylene-based resin foamed sheet 6 with a wire 8 near the peripheral edge of the laminated sheet. A core material 2 which is positioned and adhered by sandwiching the wire between the laminated sheets 3 and 3
And a skin material 7 covering the surface of the core material 2.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a vehicle sun visor.

[0002]

[Prior art]

 Conventionally, as a sun visor with shape retention and cushioning properties, a wire is placed around the member such as corrugated board, and a cushioning material such as urethane foam is placed on both sides of a strong member in which the wire and corrugated board are fixed with tape. It is known that the above is adhered to the above corrugated board, and if necessary, a vinyl chloride sheet is interposed and covered with a skin material.

[0003]

[Problems to be solved by the device]

 However, in the above-mentioned conventional sun visor, since the number of constituent members is large, it takes a lot of time to bond them, and it is also necessary to fix the wire and the corrugated board with a tape, which complicates the process. It was very time-consuming to manufacture. In addition, the corrugated board used for maintaining the strength of the entire sun visor is apt to absorb moisture, and when it absorbs moisture, its strength is remarkably reduced, and it tends to be crushed or bent, resulting in insufficient shape retention over a long period of time. In view of the above points, an object of the present invention is to provide a sun visor that is easy to manufacture and has excellent cushioning properties and long-term shape retention.

[0004]

[Means for Solving the Problems]

 The sun visor for a vehicle of the present invention comprises a laminated sheet formed by adhering a propylene-based resin foam sheet, a thermoplastic resin film or sheet, and a propylene-based resin foam sheet, and a wire around the periphery of the laminated sheet. It is characterized by comprising a core material which is positioned and adhered by sandwiching the wire between the laminated sheet and a skin material which covers the surface of the core material.

Further, in the above vehicle sun visor, it is preferable that the propylene resin forming the propylene resin foam sheet is a propylene resin having a long chain branch.

[0006]

【Example】

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The drawings show one embodiment of the present invention. As shown in FIG. 1, a vehicle sun visor 1 of the present invention is a laminated sheet 3 or 3 formed by adhering a propylene resin foam sheet 4, a thermoplastic resin film or sheet 5, and a propylene resin foam sheet 6. A core material 2 in which a wire 8 is positioned in the vicinity of the peripheral portions of the laminated sheets 3 and 3 and the wires are bonded so as to be sandwiched by the two laminated sheets 3 and 3 is covered with a skin material 7. Has been done. In FIG. 1, 9 is a support member that connects the vehicle sun visor 1 and the sun visor shaft 10, 10 is the sun visor shaft, and 11 is the vehicle sun visor 1 provided on the front side of the vehicle interior ceiling or the like. A locking rod for locking and fixing to the locking portion.

The density of the propylene-based resin foam sheet 4 of the inner layer of the core material 2 and the propylene-based resin foam sheet 6 of the surface layer of the core material 2 is usually 0.015 to 0.2 g / cm ³ , and preferably 0. 0.02 to 0.1 g / cm ³ . More preferably, the density of the propylene-based resin foam sheet 6 is 0.06 g / cm ³ or less. The propylene resin foam sheet 4 and the propylene resin foam sheet 6 may have different densities. In this case, the density of the propylene resin foam sheet 6 is higher than that of the propylene resin foam sheet 4. It is preferably low.

Examples of the resin constituting the propylene-based resin foamed sheet 4 and the propylene-based resin foamed sheet 6 include polypropylene, propylene-ethylene copolymer, propylene-butene copolymer, propylene-ethylene-butene copolymer, and the like. The propylene-based resin having 50 mol% or more of the propylene component is preferably a propylene-based resin having a long chain branch. As the above-mentioned propylene-based resin having a long chain branch, a propylene-based copolymer having high impact resistance and elasticity is preferable, and a propylene-ethylene block copolymer is particularly preferable.

The above-mentioned olefin is usually contained in the copolymer in an amount of preferably 0.5 to 30% by weight, more preferably 1 to 10% by weight.

The above-mentioned propylene-based resin having a long-chain branch is an ordinary crystalline linear propylene-based resin (usually having a weight average molecular weight of 100,000 or more), and the atactic component and / or isotactic resin therein. However, a resin containing a non-crystalline component (hereinafter, this resin is referred to as a "normal propylene resin" to distinguish it from the propylene resin used in the present invention. It is simply referred to as a propylene resin. In this case, the resin used in the present invention is mixed with a low temperature decomposition type (decomposition temperature: room temperature to 120 ° C.) peroxide and heated to 120 ° C. or lower to obtain a normal propylene-based resin. It can be obtained by a method such as binding an atactic or / and non-crystallizing isotactic component as a branched chain to the main chain of the resin, usually with a long chain at the end. It has a branched structure having a branch.

Examples of the low-temperature decomposition type peroxide include di (s-butyl) peroxydicarbonate, bis (2-ethoxy) peroxydicarbonate, dicyclohexylperoxydicarbonate, di-n-propylperoxydicarbonate. Carbonate, di-n-butyl peroxy dicarbonate, diisopropyl peroxy dicarbonate, t-butyl peroxy neodecanoate, t-amyl peroxy neodecanoate, and t-butyl peroxypivalate are exemplified.

The thickness of the thermoplastic resin film or sheet 5 is usually 3 to 1000 μm, preferably 5 to 500 μm.

As the resin constituting the thermoplastic resin film or sheet 5, in addition to the resins used for the propylene-based resin foamed sheet 4 and the propylene-based resin foamed sheet 6 described above, maleic anhydride, Examples thereof include those obtained by further copolymerizing (modifying) glycidyl acrylate, glycidyl methacrylate and the like. These films or sheets have adhesiveness with the propylene resin foam sheets 4 and 6, and when these are laminated, the shape retention of the vehicle sun visor is greatly improved.

The skin material 7 is for covering the core material 2, and is made of woven cloth, non-woven cloth, thermoplastic synthetic resin sheet or the like.

The wire 8 has only to have a strength that does not easily deform even when the vehicle sun visor 1 receives an external force.

In manufacturing the vehicle sun visor 1 of the present invention, first, the propylene resin foam sheet 4 and the propylene resin foam sheet 6 are laminated, and the propylene resin foam sheet 4 and the propylene resin foam sheet 4 are laminated by an extrusion lamination method or the like. 6. A thermoplastic resin film or sheet 5 having an adhesive property with 6 is adhered with a thermoplastic resin film or sheet 5 interposed therebetween to form a laminated sheet 3, and then heat treatment is performed so that the surface temperature is about 110 to 150 ° C. if necessary (laminated sheet). Curl, etc.) and cut into a predetermined size, and then place the laminated sheets 3 and 3 of a predetermined size one on each side of the wire 8 to form the laminated sheets 3 and 3. After sandwiching the wire 8 and laminating the laminated sheets 3 together using a hot melt adhesive or the like to form the core material 2, the core material 2 is covered with the skin. The vehicle sun visor 1 is formed by covering with the material 6. In the present invention, it is also possible to use a film or sheet 5 which is not adhesive to the propylene resin foam sheets 4 and 6, and in this case, the propylene resin foam sheet 4 and the thermoplastic resin film or sheet 5 are used. And the propylene-based resin foamed sheet 6 are bonded with an adhesive, but the film or sheet 5 which has the adhesiveness with the propylene-based resin foamed sheets 4 and 6 which can be used in the extrusion lamination method has a low manufacturing cost. It is preferable because it can be reduced. Further, in the present invention, as the adhesive agent for adhering the laminated sheets 3 to each other, various adhesive agents such as adhesive type and two-liquid mixed type can be used in addition to the above. Alternatively, the laminated sheets 3 may be heat-sealed to each other and adhered to each other.

[0017]

[Effect of device]

 As described above, the vehicle sun visor of the present invention has a smaller number of parts than conventional sun visors and does not require much labor for bonding, and moreover, the wire and the corrugated board are fixed with tape like the one using the corrugated board as the core material. Since there is no need to do so, it does not take time and effort to manufacture, and since corrugated board is not used, there is no fear of strength deterioration due to moisture absorption, and there is an effect that it is excellent in cushioning properties and long-term shape retention. Further, when the propylene-based resin constituting the propylene-based resin foamed sheet is a propylene-based resin having a long chain branch, the propylene-based resin is non-crosslinkable and can form highly closed cells with high foaming property, and thus has a buffering property. It can be a vehicle visor that is expensive and recyclable. Moreover, in the case of the foamed sheet using this propylene-based resin as a base material, when the thermoplastic resin sheet or film and the propylene-based resin foamed sheet are adhered, the thermoplastic resin sheet or film is laminated by the extrusion lamination method. However, the heat at that time hardly causes shrinkage or deformation of the foamed sheet, and even if the thermoplastic resin sheet or film is relatively thin, the shape retention of the sun visor becomes extremely good. Moreover, when a wire is sandwiched, a foamed sheet using a propylene-based resin having long-chain branching has excellent performance of elastically deforming and pressing and holding the wire, so an adhesive for bonding the laminated sheets together is bonded. It has the effect that the wire can be firmly held between both sides without being placed on the entire surface.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view of a vehicle sun visor according to the present invention.

FIG. 2 is a vertical sectional view taken along the line II-II in FIG.

[Explanation of symbols]

 1 Vehicle sun visor 2 Core material 3 Laminated sheet 4, 6 Propylene resin foam sheet 5 Thermoplastic resin film or sheet 7 Skin material 8 Wire

Claims (2)

[Scope of utility model registration request] 1. A propylene-based resin foamed sheet, a thermoplastic resin film or sheet, and a laminated sheet formed by adhering a propylene-based resin foamed sheet to each other, with a wire positioned near the periphery of the laminated sheet. A sun visor for vehicles, comprising: a core material which is sandwiched between both laminated sheets and adhered, and a skin material which covers the surface of the core material. 2. The vehicle sun visor according to claim 1, wherein the propylene resin forming the propylene resin foam sheet is a propylene resin having a long chain branch.