JPH05328472A - Mold cabinet body for acoustic apparatus - Google Patents

Abstract

PURPOSE:To provide an external appearance having a stereoscopic effect conforming to the diversification of a design, egc., by integrally forming a net for covering a sound transmission hole and joining it to a cabinet base body. CONSTITUTION:A mold body C main body of exterior cabinet for housing an acoustic apparatus is used for housing a television set, and provided with an opening window part in an image receiving tube arrangement part. On the surface of a cabinet based body 1 made of a resin, a net 2 is extended and provided integrally so as to cover a sound transmission hole 3 for a loudspeaker. The net 2 is adhered to the surface of the base body integrally with the base body 1 by heat-fusion or with an adhesive agent at the same time or after the cabinet body C is molded. A coarse mesh sheet of cloth, or a silk gauze-like minute mesh sheet of cloth, or a punched mesh sheet formed by piercing minute and small holes in a paper or synthetic resin sheet is used for the net 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cabinet for exterior of an acoustic article equipped with a sound generator such as a speaker,
The present invention relates to an acoustic article exterior cabinet molding in which a net (mesh sheet) for decoration or dust prevention is integrally stretched in front of a main body of an acoustic generator.

[0002]

2. Description of the Related Art Conventionally, for example, as disclosed in Japanese Examined Patent Publication No. 49-23855, there is a speaker net which is superposed and supported on a front plate of a cabinet for mounting and holding a speaker, and is adhered by a double-sided adhesive. .. In addition, there is a net for a speaker which is a net-like adhesive sheet having adhesiveness as in Japanese Utility Model Application Laid-Open No. 50-1561 and which is used by adhering to a front surface of a cabinet.

Also, as shown in Japanese Utility Model Publication No. 51-19823, a net having a large number of small holes is used as a non-woven fabric having good sound permeability.
There is a speaker net which is used by adhering an adhesive sheet such as cloth or paper. When the speaker net is covered and attached in front of the speaker, a sound hole is provided for transmitting sound. On the front side of the flat cabinet front plate (on the back side, the speaker is mounted and supported in alignment with the sound hole), the sound hole is covered and overlapped.

[0004]

SUMMARY OF THE INVENTION Radio in recent years,
The exterior frame that protects the outside of the speaker (sound generator) that is installed in acoustic home appliances such as TVs and other audio products, and the speaker net that covers the front of the speaker are made of materials, shapes, sizes, and color tones. The design including diversification has been diversified, and in the conventional speaker net, the flat front plate is used as the support, and the speaker front is simply covered. There is a demand for speaker nets that can produce a three-dimensional appearance that is not just flat, as is appropriate. The present invention provides a molded cabinet that is provided with a net for covering a sound generator such as a speaker that can meet this demand.

[0005]

According to the present invention, a sound-transmitting hole 3 is covered in a resinous audio equipment exterior cabinet C having a sound-transmitting hole such as a radio, a television, and a stereo, which is equipped with a sound generator such as a speaker. Net 2 is Cabinet C
A cabinet molding for exterior packaging of audio equipment, which is joined to the cabinet base 1 of the main body by integral molding.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described with reference to the embodiments shown in FIG.
FIG. 3 is a perspective view for explaining the external appearance of an embodiment of an audio equipment exterior cabinet molding C of the present invention, in which the exterior cabinet molding C main body for accommodating audio equipment (in FIG. 1, the television receiver is loaded). A sound-transmitting hole 3 for a speaker (a speaker of the cabinet base 1 should be arranged oppositely) on the surface of a resin-made cabinet base 1 which is a cabinet and comprises an opening window portion B in a portion corresponding to a picture tube disposition. Perforated or single-hole-shaped sound-permeable holes that are provided at each point)
The net 2 (mesh sheet) is integrally stretched so as to cover the.

In the present invention, in particular, the exterior cabinet C is composed of a resin-made cabinet base 1 molded into a predetermined shape into which an audio equipment body can be loaded. After molding, the net 2 is attached to the surface of the cabinet C integrally with the base body 1 by heat fusion or through an appropriate adhesive, including the sound transmission hole 3 region.

Regarding the molding method for forming the cabinet molding C for acoustic equipment exterior by sticking the net 2 on the surface of the cabinet C, an example of which will be described later, the tension molding. The net 2 used in the processing is preferably cut into a pattern corresponding to the outer shape pattern of the exterior cabinet C main body, but can be used without cutting.

The net 2 is made of a mesh-like sheet having an appropriate fine density, covers the portion corresponding to the sound transmission hole 3 of the cabinet C, and extends on the surface of the cabinet C other than the sound transmission hole 3 region. Is done.

As the resin used for the substrate 1 in the present invention, a usual cabinet molding resin can be used, and a polyolefin resin such as polyvinyl chloride, acryl, polystyrene or polypropylene can be used. It is possible to use various synthetic resins such as plastic resins and thermosetting resins.

In the present invention, the net 2 may be a coarse mesh sheet (cloth) or a mesh-shaped fine mesh sheet (cloth). As the coarse mesh sheet, a knit mesh with coarse stitches, a woven cloth mesh made of warp and weft, or paper, punching mesh sheet in which small holes are punched in various synthetic resin sheets, and the like are used. Roughness is 0.5 mm per pitch
Approximately 1.8 mm is suitable, and the sheet thickness is, for example, approximately 0.15 mm to 0.5 mm.

Further, as the gauze-like fine mesh sheet,
Warp and weft threads made of natural fibers or synthetic fibers (for example, thickness 0.
It is a woven fabric (elastic or non-elastomeric woven fabric) with a fine mesh using about 0.3 mm to 0.1 mm), and its fineness is such that the mesh 1 pitch width is 0.03 mm to
A suitable size is about 0.2 mm, but the size is not particularly limited. The gauze-shaped fine mesh sheet has a good sound-transmitting property and, if necessary, a translucent semitransparent state. May be present.

The cabinet body 1 made of resin, which constitutes the cabinet molding C for exterior of the audio equipment of the present invention (using a cabinet base molded by injection molding method using pellet molten resin, or a plastic sheet for molding) (Cabinet substrate molded by pressure molding, heat pressure molding, vacuum pressure air molding method), for example, polypropylene, polyvinyl chloride, polyvinyl chloride-vinyl acetate copolymer, polyethylene, polyethylene terephthalate, acrylic, polycarbonate, Thermoplastic resins such as polystyrene and thermosetting resins such as melamine, urea, fluorine and urethane can be used, and the thickness is, for example, 0.5 mm to
About 1.0 mm is suitable, but it may be thicker, and the thickness is not particularly limited.

In order that the net 2 (mesh sheet) and the cabinet base body 1 are well adhered to each other, it is possible to appropriately apply an adhesive anchor resin to the inner surface side of the superposed ones, and the net 2 and the cabinet before molding. Base 1
It is desirable that the net 2 has an appropriate rigidity (strength of the waist) in order to facilitate the superimposing and molding process with. For this reason, for example, a synthetic resin liquid having an appropriate hardness is previously applied to the mesh sheet. (Coating, dipping, spray application) may be performed.

The net 2 and the cabinet substrate 1 can be colored in a suitable color tone, for example, dark color such as black or light color tone such as yellow or white, and the color tone of the net 2 and the base 1 is the same. Or a different color tone.

In the superposition of the net 2 and the cabinet base 1 before forming, the net 2 and the base 1 are attached by heat lamination or wet lamination or dry lamination via an adhesive, and then,
It may be press-molded into a desired cabinet shape, or may be simply laminated and then press-molded without being attached at all.

As another embodiment of the present invention,
For example, it is possible to apply a fine-grained bead layer to the surface of the net 2 (mesh sheet) using bead paint.
It is desirable that the bead paint is applied to the surface of the net 2 after the cabinet substrate 1 is molded.

As the bead coating material, synthetic resin binders (including thermoplastic resin binders, ultraviolet polymerization curable resin binders, heat polymerization curable resin binders, etc.), fine granular beads (inorganic beads such as glass, synthetic resin) are used. Beads and the like) are dispersed and mixed, and the bead paint is sprayed at an appropriate jetting speed so that the bead paint sprayed on the sound transmission hole 3 region is attached only to the yarn or the spinning surface forming the net 2. ..

After the bead coating is applied, the net 2 is dried by air drying, blower drying, heat drying, ultraviolet irradiation drying or other appropriate drying process, and the resin binder component is dried and solidified by a drying and curing process to form fine particles on the surface of the net 2. It attaches granular beads.

The fine granular beads used are 1/3 of the width (for example, about 120 μm) of the mesh void portion of the net 2.
The following particle sizes (for example, particle size 5 μm to 60 μm, average particle size 1
It is desirable to set it to 5 μm to 18 μm).

The fine granular beads are thermosetting resin beads or thermoplastic resin beads, or fine granular beads using inorganic granular materials such as glass, sand and other natural minerals (
For example, a transparent or opaque colored bead mixed with a particle diameter of 10 μm to 100 μm) and colored in an appropriate color such as dark color or light color may be used, or colorless transparent bead may be used. Good.

The resin binder used as a bead coating component is a transparent or opaque acrylic resin, polyester resin, polyurethane resin or vinyl resin which is uncolored or colored in the same color tone as the fine granular beads. , Epoxy resin, melamine resin, alkyd resin, and thermoplastic resin, thermosetting resin, or ultraviolet curing resin, which is a resin mainly selected from copolymers or mixtures thereof, two-component curing Mold resin can be used.

In the molded cabinet C for exterior of audio equipment of the present invention, the speaker main body (not shown) disposed inside the cabinet C facing the sound transmission hole 3 covered with the net 2 is the outside net. Depending on the amount of light that is radiated from the 2 side to the speaker body side, it may have an appropriate translucency such that it can be seen from the front side of the net 2 or slightly visible, or as long as the sound transmission is maintained. It may have a concealing property that is totally concealed.

Specific examples of the molding method for molding the audio equipment exterior cabinet molding C of the present invention will be described below with reference to FIGS.

<Molding method 1> A sheet for forming a cabinet substrate such as a polyester sheet (1.0 mm thick) having pressure moldability or a polyvinyl chloride sheet (1.0 mm thickness) having heat and pressure moldability is used. , A press-molding die for molding a television receiver exterior cabinet of a predetermined shape, or
After installation in the hot press molding die, press molding is performed under non-heating conditions, or press molding is performed under heating conditions of about 120 ° C. to 160 ° C., and a plan view of FIG.
The cabinet substrate 1 as shown in the MM side sectional view of (b) is molded. In addition, B is an opening window part in which the picture tube of the television receiver is arranged.

Before or after forming the cabinet substrate 1, the sound-transmitting holes 3 (a perfect circle or an ellipse, or a staggered arrangement of diameters of 3 mm) are formed at desired locations on the cabinet substrate 1 by a punching blade. A plurality of small holes).

Then, on the surface of the cabinet substrate 1,
Adhesive 12 (hot melt adhesive RB-5, manufactured by Dainippon Ink and Chemicals, Inc.) is applied and dried at a coating film thickness of 30 μm.

Next, as shown in FIG. 3, as a net 2 (mesh sheet), nylon gauze (wire diameter: 48 μm, 150) is used.
The net 2 formed into a frame shape by cutting out the opening window portion B of the cabinet for exterior of the television receiver by using a mesh, manufactured by Unitika Ltd., and an air-impermeable sheet 10 (polyvinyl chloride sheet, polypropylene sheet). , Polyethylene terephthalate sheet, neoprene-based rubber sheet, etc.) so that they can be peeled off (it can be peeled off via the pressure sensitive adhesive 11 if necessary) and temporarily attached, and the net transfer sheet A
To form.

Then, as shown in FIG. 4, the press-molded cabinet base 1 is vacuum-molded with a predetermined shape 20 having an outer shape along the inner surface thereof (the inside of which is communicated with the outer surface of the mold). (Vacuum suction holes 21 are provided) or after being fixed in a compressed air molding die, the impermeable sheet 10 and the net 2 are formed on the surface of the cabinet base 1 including the area of the sound transmission holes 3. And the net transfer sheet A that has been temporarily adhered to each other are overlapped, and vacuum suction or compressed air pressure is applied under heating conditions (heating time 30 seconds to 8 seconds) of 100 ° C. to 250 ° C. to make the impermeable sheet 10 on the cabinet surface. At the same time, the net 2 is closely adhered and molded, and the net 2 is joined to the surface of the cabinet base 1.

Subsequently, the air-impermeable sheet 10 was peeled off from the net 2 to obtain a cabinet molding C having the speaker-covering net 2.

<Molding Method 2> A sheet for molding a cabinet substrate such as a polyester sheet (1.0 mm thick) having a pressure moldability or a polyvinyl chloride sheet (1.0 mm thickness) having a heat and pressure moldability is used. , Press-molding die for TV cabinet exterior cabinet molding of a predetermined shape, or press-molding after being installed in a press-molding die for heating or press-molding under non-heating conditions, or about 120 ° C to 160 ° C Press-molding is performed under the heating conditions described above to mold the cabinet substrate 1 as shown in the plan view of FIG. 2A and the MM side sectional view of FIG. 2B. In addition, B is an opening window part in which the picture tube of the television receiver is arranged.

Before or after the cabinet base 1 is formed, the sound-transmitting holes 3 (perfect circles or ellipses, or staggered arrangements of 3 mm in diameter) are formed at desired locations on the cabinet base 1 by a punching blade. A plurality of small holes).

Next, as shown in FIG. 3, as the net 2 (mesh sheet), nylon gauze (wire diameter: 48 μm, 150) is used.
The net 2 formed into a frame shape by cutting out the opening window portion B of the cabinet for exterior of the television receiver by using a mesh, manufactured by Unitika Ltd., and an air-impermeable sheet 10 (polyvinyl chloride sheet, polypropylene sheet). , Polyethylene terephthalate sheet, neoprene-based rubber sheet, etc.) so that they can be peeled off (it can be peeled off via the pressure sensitive adhesive 11 if necessary) and temporarily attached, and the net transfer sheet A
To form.

Subsequently, as shown in FIG. 4, the press-molded cabinet substrate 1 is vacuum-molded with a predetermined shape 20 having an outer shape along the inner surface thereof (the inside of which is communicated with the outer surface of the mold). Vacuum suction holes 21 are provided) or after being fixed in a compressed air molding die, the adhesive 12 (hot melt adhesive RB-5, Dainippon Ink and Co., Ltd.) is applied to the surface of the cabinet substrate 1 with a coating film thickness of 30 μm. Chemical Industry Co., Ltd.
Applied) and dried.

Then, the impermeable sheet 10 and the net 2 are superposed on the surface of the cabinet base 1 including the area of the sound transmission hole 3 and the net transfer sheet A which is temporarily adhered is superposed. C. to 250.degree. C. under heating conditions (heating time of 30 seconds to 8 seconds), vacuum suction or pneumatic pressure is applied to the surface of the cabinet substrate 1 to form the net 2 in close contact with the impermeable sheet 10, and the net 2 is formed. It is bonded to the surface of the cabinet base 1.

Subsequently, the air-impermeable sheet 10 was peeled off from the net 2 to obtain a cabinet molding C having the speaker-covering net 2.

<Molding Method 3> For a cabinet base molding sheet such as a polyester sheet (1.0 mm thick) having pressure moldability or a polyvinyl chloride sheet (1.0 mm thickness) having heat and pressure moldability. The sound transmission hole 3 is formed at a desired position by a punching blade.

Subsequently, the adhesive 12 (hot melt adhesive RB-5, manufactured by Dainippon Ink and Chemicals, Inc.) is applied to the surface of the cabinet substrate forming sheet at a coating film thickness of 30 μm.

Next, as shown in FIG. 3, as the net 2 (mesh sheet), nylon gauze (wire diameter: 48 μm, 150) is used.
Using a mesh, manufactured by Unitika Ltd., the net 2 formed by cutting out the opening window B of the cabinet for exterior of the television receiver to form a frame, and the air-impermeable sheet 10 (polyvinyl chloride sheet or neoprene). System rubber sheet etc.) (Peelable via adhesive 11 if necessary)
Then, the net transfer sheet A is formed.

Subsequently, a net transfer sheet A obtained by superimposing the impermeable sheet 10 and the net 2 on each other and temporarily adhering the net 2 on the surface of the cabinet substrate forming sheet is superposed, and the net 2 is interleaved with the adhesive 12. 105 ℃ ~ 120 ℃
Laminate under moderate heating conditions.

Next, the cabinet substrate molding sheet laminated with the net transfer sheet A is used as a vacuum molding mold 20 for molding a TV receiver exterior cabinet having a predetermined shape shown in FIG. A vacuum suction hole 21 communicating with each other) or horizontally installed and fixed on the upper part of the pressure-molding die, and then heated under a heating condition of 100 ° C. to 250 ° C. (heating time 30 seconds to 8 seconds). The sheet for forming a cabinet substrate is formed into a cabinet shape by suction or heating and pressurization.

Subsequently, the air-impermeable sheet 10 of the net transfer sheet A was peeled from the net 2 to obtain a cabinet molding C having a speaker-covering net.

[0043]

[Function] The molded cabinet C for exterior of audio equipment of the present invention
Is a net 2 (mesh sheet) with good sound permeability
And a cabinet body 1 made of resin provided with a sound transmission hole 3 are integrally joined and molded into a cabinet having a shape that appropriately covers the outer shape of an audio device. The sound transmission hole of the cabinet C facing a sound generator such as a speaker mounted on the front side or the corner of the front end portion, or on the left and right sides, and on the top and bottom is provided with the net 2
Can be covered by.

Further, the cabinet molding C for exterior of audio equipment of the present invention is particularly effective in the case of covering a speaker arranged at the corner of the front of the cabinet of audio equipment, and the net is the cabinet base 1 and Since they are integrally molded and joined together, a net curved surface corresponding to the curved outer curved surface of the cabinet substrate 1 can be obtained, and a reliable holding force of the curved surface and deformation resistance can be obtained.

By combining the color tone of the base 1 and the net 2, it is possible to provide a cabinet molded body of various harmony color tone such as monotone, duotone, or multitone, and the appearance of delicate texture by the mesh-shaped fine mesh sheet. Can be finished.

[0046]

The cabinet molding for exterior of audio equipment of the present invention has a net for covering the sound transmission hole attached by integral molding by a resin molding method, and the sound transmission hole formed in the cabinet is provided. A cabinet for acoustic home appliances such as radios, televisions, and other audio products that have been required to have various external designs in recent years, as well as having a dustproof protection effect and a decorative effect by coating, and also a decorative effect on the appearance of the entire cabinet. It is a new exterior cabinet for audio equipment that can be used and developed as.

Further, in the cabinet molding for exterior of audio equipment of the present invention, the net for covering the sound transmission hole of the cabinet in which the acoustic home appliances are loaded is attached to the cabinet body by integral molding, and the conventional net for speaker is provided. Like the above, the flat front plate is used as a support to not only cover the front of the speaker flatly, but also the net can be stretched to a shape that matches the curvature shape along the cabinet outer shape with a three-dimensional effect. This is a remarkable effect as a cabinet for exterior of audio equipment, such as labor saving of the subsequent net installation work.

[Brief description of drawings]

FIG. 1 is an external perspective view of an embodiment of an audio equipment exterior cabinet molding of the present invention.

FIG. 2 (a) is a plan view of a cabinet base used for forming an audio equipment exterior cabinet molding of the present invention. (B) It is a MM side sectional view of a cabinet base body used for forming the cabinet molded body for exterior of audio equipment of the present invention.

FIG. 3 is a side cross-sectional view of a net used for vacuum-pressure forming of the audio equipment exterior cabinet molding of the present invention.

FIG. 4 is a side sectional view for explaining a step of joining the cabinet base and the net by vacuum pressure forming in the cabinet molded body for exterior of audio equipment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Cabinet base body 2 ... Net 3 ... Sound-permeable hole 10 ... Impermeable sheet 11 ... Adhesive 12 ... Adhesive
20 ... Molding die 21 ... Vacuum suction hole A ... Net transfer sheet B ... Opening window C ... Cabinet molded body

Claims (1)

[Claims] 1. In a cabinet C for exterior of acoustic equipment made of resin, which is provided with a sound transmission hole such as a radio, a television, a stereo, etc., in which a sound generator such as a speaker is mounted, a net 2 covering the sound transmission hole 3 is a main body of the cabinet C. Cabinet base 1
A molded body for exterior cabinets of audio equipment, characterized in that it is integrally molded with the above.