JPH0884390A - Speaker net - Google Patents

Abstract

PURPOSE: To avoid difficulty in overlapping due to a difference from an elongation rate and production of wrinkles to a curved outer shape by using short fibers for an outer face of a comparatively rough net knitted in a mesh shape such as rhombus so as to apply flocking. CONSTITUTION: Flocking processing is applied to at least the surface of a rough net 1 woven by using comparatively thick warps and wefts by using short fibers 2 and a flocking net 3 to which the short fibers 2 are integrated is provided to the net 1. A sound hole 12 through which a sound of a speaker S is emitted is made to a cabinet 11 (cabinet case front plate or side plate or the like) incorporating the speaker S and the speaker net A is adhered to an opening of the sound hole 12 so as to cover the sound hole 12 with an adhesive layer 14. In this case, the net 1 of the speaker net A has mesh aperture of 30% or over. Furthermore, either or both of the net 1 and the short fibers 2 is made of the same resin or the same group of resin as that of the cabinet.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a television receiver,
The present invention relates to a speaker net for tensioning a speaker body on a surface including a portion for mounting a speaker of an external cabinet case such as a stereo audio product, for protecting the speaker body, or for decoration or dustproofing.

[0002]

2. Description of the Related Art A conventional speaker net stretched on a surface including a speaker mounting portion of an exterior cabinet case such as a television receiver has a resin punching sheet and a fine mesh-like mesh sheet superposed on the surface. Alternatively, there is one in which a fine mesh-like mesh sheet is superposed on the surface of a relatively coarse knit cloth having a mesh shape knitted in a diamond shape or the like.

Conventionally, a corner portion (corner portion) on the front surface of a cabinet in which a speaker sound hole portion of a television receiver is provided.
When the speaker net is stretched (attached) including the speaker sound hole part, the speaker net is temporarily attached to the sound tube part on the cathode ray tube side using an adhesive layer and then from the cathode ray tube side. To the side, on the cabinet side,
It is stretched by pressure bonding with a pressure roll using an adhesive.

[0004]

The outer shape of a cabinet such as a television receiver in recent years has a delicate curved surface corresponding to the curved shape of a cathode ray tube, and the speaker net as described above is provided on the surface of such a cabinet. When sticking, in a speaker net in which a resin-made punching sheet surface is overlaid with a fine mesh-like mesh sheet, the punching sheet does not have good flexibility and stretchability, but on the contrary, has rigidity (repulsive force). In addition, it may not be possible to obtain good adhesion to the cabinet surface, and it may not be possible to secure a good adhesive force.

Therefore, instead of the punching sheet, as shown in FIG.
As shown in FIG. 4, a speaker net in which a fine mesh-shaped mesh-like mesh sheet 14 is superposed on the surface of a knitted cloth 13 (net) having a knitted mesh shape covers the sound hole 12 of the cabinet 11. Cabinet 1
Since the knitted fabric 13 and the gauze mesh sheet 14 have flexibility when sticking to one surface, the knitted cloth 13 and the gauze mesh sheet 14 are easily stretched when sticking, and even if the cabinet 11 surface has a curved surface, the adhesiveness can be secured.

However, the above-mentioned two-layer speaker net in which the fine mesh-shaped mesh-like mesh sheet 14 is superposed on the surface of the coarse knit-shaped cloth 13 (net) as described above is a coarse-shaped cloth 13 (net). And the fine mesh-like mesh sheet 14 are peeled off, for example, even if the overlapping surfaces are adhered by an adhesive, the standard peel strength is 450 g (peeling test; peeling speed 200 mm over 25 mm length). The load at the time of peeling by 180 ° / min.) Or more is required, while the average peel strength is 50.
Only about 0 to 650 g was obtained, and there was a possibility of peeling.

[0007] Further, at high temperature with respect to the cabinet,
Deformation due to temperature was likely to occur during press-bonding and sticking for a long time.

Further, when the difference in elongation between the coarse knitted cloth 13 and the fine mesh-like mesh sheet 14 is, for example, the elongation rate of the mesh-like mesh sheet 14 is 1,
When the longitudinal elongation of the knitted fabric 13 is about 1.5 (150%) and the lateral elongation is about 4.4 (440%), the difference in the elongation results in a difference between the elongation at the pressing end portion by the pressing roll. Inducing wrinkles and difficulty in applying evenly,
Therefore, it is necessary to eliminate the above-mentioned influence due to the difference in the elongation rate and technically improve.

According to the present invention, the outer surface of a net having a relatively coarse shape knitted in a mesh shape such as a rhombus is subjected to flocking processing using short fibers, and a single net made of coarse net and short fibers is used. With this configuration, it is possible to eliminate the difficulty of overlapping due to the difference in elongation rate and the generation of wrinkles on the curved outer shape of the cabinet surface, and to achieve good adhesion.

[0010]

According to the present invention, a speaker net is characterized in that the surface of a coarse net 1 knitted in a mesh shape such as a rhombus is subjected to flocking processing using short fibers 2. Is.

Further, the present invention is the speaker net according to the present invention, wherein the net 1 has a mesh aperture ratio of 30% or more.

In the present invention, one or both of the net 1 and the short fibers 2 in the speaker net of the present invention is the same resin as the cabinet side or a similar resin, and the speaker sound hole of the cabinet is provided. The speaker net is heat-sealed to the sound hole so as to cover it.

The present invention is also a speaker net in which an appropriate region of the net 1 in the speaker net of the present invention is molded into a three-dimensional shape.

The present invention is also the speaker net of the above-mentioned speaker net of the present invention, wherein one or both of the net 1 and the short fibers 2 are polyester fibers or fibers mainly containing the fibers.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A speaker net of the present invention will be described in detail below with reference to an embodiment shown in a partially enlarged side sectional view of FIG.

As shown in FIG. 1, the speaker net of the present invention has at least the surface of the coarse net 1 woven with a relatively thick warp yarn 1a and a weft yarn 1b (both front and back sides may be used). A flocking net 3 is provided, in which flocking processing is performed using the short fibers 2, and the short fibers 2 are integrally formed with the net 1.

The coarse net 1 is a net woven by relatively thick warp threads 1a and weft threads 1b,
30% or more is suitable for the aperture ratio, for example, 30 to 5
It is about 0% or about 40 to 60%.

The intervals between the warp threads 1a and the weft threads 1b can be set appropriately in consideration of the aperture ratio, but are, for example, about 0.6 mm to 1.5 mm and 0.8 mm to 1.
About 0 mm is suitable.

The yarns used as the warp yarn 1a and the weft yarn 1b have a weight of about 250 to 350 d (denier),
About 300d is suitable, and the thickness is 0.20-diameter.
About 0.50 mm, about 0.3 mm is suitable.

The warp yarns 1a and the weft yarns 1b may be made of natural fibers such as cellulose fibers, synthetic fibers such as polyester fibers, nylon fibers, vinyl fibers, or blended fibers, and may be made of appropriate resin ( A thread impregnated with polyethylene, polystyrene, polyvinyl chloride, polyvinyl chloride-vinyl acetate copolymer, acrylic, polyester, etc.) may be used.

The short fiber 2 may have a fiber diameter of 0.1 mm or less, but is preferably about 0.1 to 0.15 mm, and the fiber length is 0.1 mm or more and 0.1 to 0.2 m.
m, 0.2 to 1.0 mm is suitable, 0.5 mm
The degree is optimal. The material of the short fibers 2 may be any of cellulose-based fibers as natural fibers, polyester-based fibers, nylon-based fibers, vinyl-based fibers and the like as synthetic fibers, and an appropriate resin (polyethylene,
The yarn may be impregnated with polystyrene, polyvinyl chloride, polyvinyl chloride-vinyl acetate copolymer, acrylic, polyester, etc.).

Flocking process (flocking process) for flocking short fibers 2 on the net 1 to form a flocked net 3.
Is prepared by applying an adhesive agent to the net 1 in advance and applying the electrostatic field while spraying the short fibers 2 toward the wet adhesive surface of the surface of the net 1 or both front and back surfaces in a high-voltage electrostatic field. The short fibers 2 (pile) are vertically landed. Then, after removing the excess short fibers by air blow, the short adhesive fibers 2 are planted on the surface of the net 1 by drying and solidifying the adhesive in a wet state.

FIG. 2 is a schematic side sectional view of the speaker net A of the present invention, one side (back side) of the above-mentioned flocked net 3.
The adhesive layer 4 having a desired pattern is attached to the adhesive layer 4, and the adhesive layer 4 is temporarily attached with a separator 5 obtained by coating a paper sheet or a synthetic resin sheet with a release agent such as silicone resin or paraffin. It is worn.

When using the above speaker net A,
The separator 5 is peeled off from the adhesive layer 4 for use. As the pressure-sensitive adhesive layer 4, a pressure-sensitive pressure-sensitive adhesive or a heat-sensitive pressure-sensitive adhesive (a pressure-sensitive adhesive to which pressure-sensitive adhesiveness is imparted by heating) can be used. When the heat-sensitive pressure-sensitive adhesive is used, The separator 5 can be omitted if necessary.

As the pressure-sensitive adhesive layer 4 in the speaker net A shown in FIG. 2, a heat-sensitive pressure-sensitive adhesive layer is laminated on the flocked net 3 side and a pressure-sensitive pressure-sensitive adhesive layer is laminated on the separator 5 side. 4 (not shown).

In the pressure-sensitive adhesive layer 4 having the two-layer structure of the heat-sensitive pressure-sensitive adhesive layer and the pressure-sensitive pressure-sensitive adhesive layer, a sheet-shaped base material layer ( For example,
A base material layer made of a synthetic resin film such as a polyester film, or a fibrous base material layer such as a natural fiber type or a synthetic fiber type non-woven fabric such as polyester) may be interposed.

FIG. 3 shows the speaker net A of the present invention.
Shows an example of use of the cabinet 11 and a cabinet 11 that incorporates the speaker S (cabinet case front plate, side plate, etc.)
In addition, the sound hole 12 for transmitting the sound of the speaker S is provided, and the speaker net A is attached and fixed by the adhesive layer 4 so as to cover the sound hole 12 at the opening edge of the sound hole 12. Is. Note that the speaker net A is on the back side of the cabinet 11 (the speaker side cabinet 1
It may be attached to one surface).

The speaker net A of the present invention is a structure body of the cabinet 11, or at least an area surface of the structure to which the speaker net A is attached (for example, the sound hole 1).
A synthetic resin material is applied to the cabinet surface at the two edges), and the speaker net A is formed by a natural fiber, a synthetic fiber, and a mixed fiber impregnated with a synthetic resin similar to the cabinet 11. The adhesive layer 4 may be temporarily attached to the surface of the cabinet 11 once to be positioned and fixed, and then permanently joined by heat fusion. In the main joining, a heating press plate (heating heater plate) and heating means such as ultrasonic waves are used to heat and attach the overlapped portions.

As the resin material forming the cabinet 11 (cabinet case), polystyrene resin,
In addition to polystyrene resin, for example, polyvinyl chloride, polyvinyl chloride-vinyl acetate copolymer, polyvinylidene chloride, vinyl acetate, polyethylene, AS resin, AB
S resin, acrylic (methacrylic), polypropylene, fluororesin, polyamide, polyacetal, polycarbonate, polyphenylene oxide, polysulfonic acid resin, thermoplastic resin such as polyethylene terephthalate, or a synthetic resin mainly containing any of these resins is there.

The speaker net A of the present invention can be curved and deformed into an appropriate shape, and before being attached to the cabinet 11, an impermeable sheet is overlaid on the speaker net A to perform heating vacuum forming or pressure forming. Molding process,
As shown in FIG. 4, plastic molding may be performed in advance into an appropriate three-dimensional shape.

Next, the difference in the deformation state when the speaker net of the product according to the present invention and the speaker net of the conventional product are press-pressed by the heating press plate and adhered to the cabinet is as follows. It was First, the conventional product does not deform under the conditions that the surface temperature of the press plate is 75 ° C. and the pressing time of the press plate is 10 seconds, but if the surface temperature of the press plate is about 80 ° C., the deformation occurs. On the other hand, the embodied product of the present invention does not deform even under the condition that the surface temperature of the press plate is 95 ° C. and the press plate pressing time is 15 seconds, and the applicability to a wide speaker net is good. It has been confirmed that it is adaptable to high temperature, short time pressing.

Next, the embodiment of the present invention shown in FIG. 3 and FIG.
Table 1 below shows a comparison with the conventional product shown in FIG.

[0033]

[Table 1]

[0034]

The speaker net A of the present invention can be attached and fixed to the speaker sound hole 12 of the cabinet 11 so as to cover the sound hole 12, or can be heat-sealed after the sticking, and audio sound equipment such as stereos and televisions. The speaker body to be mounted on the corner or side of the front surface or front end of the
It can be attached and fixed to the cabinet for storing the speaker body that has a sound hole for transmitting the speaker.

Since the speaker net A of the present invention is formed by the flexible hair-implanted net 3, it is particularly effective when covering the speaker sound holes arranged at the corners on the front side of the cabinet of the audio equipment. A curved surface having an appropriate curvature corresponding to the bending elasticity of the speaker net A is relatively easily obtained, and the hardness of the speaker net is adjusted appropriately to ensure the holding force and external force of the curved surface. The deformation resistance against can be set.

The speaker net A of the present invention has a flocked net 3 in which the coarse net 1 and the short fibers 2 are integrated.
The use of resin-impregnated yarns as the warp and weft yarns constituting the net 1 makes it easy to form into a three-dimensional shape. When the warp and weft yarns are diagonally arranged and subjected to forming processing such as heating vacuum and pressure forming to form a three-dimensional shape, array distortion of each quadrangular weave of the net 3 due to three-dimensional stretching occurs. Has inconspicuous features.

Further, the speaker net A of the present invention uses the single-layer coarse net 1 having the flocking process with the short fibers 2 as the base material sheet, so that it is heat-bonded to the cabinet. At high temperature for a long time under heat and pressure, there is no difference in the expansion and contraction rate due to the temperature difference between the front and back of the net, so curling does not occur and it is difficult to deform, so it is easy to carry out the sticking process, and the distortion in the sticking process Is less likely to occur, and has a characteristic that the finish after being attached to a cabinet or the like is finished neatly.

Further, the speaker net A of the present invention comprises a combination of the color tone of the net 1 which is coarse and colored in an appropriate color tone, and the short fiber 2 in which the finely colored fibers are flocked and which is appropriately colored, and the short fiber 2. The subtly changing floss surface gloss can develop various color tones in monotone, duotone, or multitone, and by coloring with light absorbing or light transmitting color, the speaker The presence of the speaker S main body on the back side of the net A can be made invisible or visible, and the appearance is delicate due to the combination of the coarse net 1 using thick threads and the fine short fibers 2. You can finish the speaker net with a nice texture.

[0039]

INDUSTRIAL APPLICABILITY The speaker net of the present invention is suitable for covering the outside and the front of a sound generator such as a speaker and an electronic sound generator installed in acoustic home appliances such as radios, televisions and other audio products in recent years. It is a speaker net, which has a sound generator protection or decoration or dust prevention function, or a protection function, and produces a three-dimensional, curved appearance that adapts to the solid appearance or smart appearance of the acoustic home appliance body. This is effective as a relatively inexpensive speaker net.

[Brief description of drawings]

FIG. 1 is a side sectional view of a flocked net portion in a speaker net of the present invention.

FIG. 2 is a schematic side sectional view of an embodiment of the speaker net of the present invention.

FIG. 3 is a side sectional view showing a state in which the speaker net of the present invention is attached to a cabinet.

FIG. 4 is an external perspective view of a speaker net according to another embodiment of the present invention, which is molded into a three-dimensional shape.

FIG. 5 is a side sectional view of a conventional speaker net.

[Explanation of symbols]

A ... Speaker net S ... Speaker 1 ... Coarse net 1a ... Warp thread 1b ... Weft thread 2 ... Short fiber 3 ... Flocking net 4 ... Adhesive material layer 5 ... Separator 11 ... Cabinet 12 ... Sound hole 13 ... Coarse mesh sheet 14 ... Fine mesh Mesh mesh sheet

[Procedure amendment]

[Submission date] October 26, 1994

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 1

[Correction method] Change

[Correction content]

FIG.

Claims (5)

[Claims] 1. A speaker net in which a short fiber 2 is used for flocking processing on the surface of a coarse net 1 knitted in a mesh shape such as a diamond shape. 2. The speaker net according to claim 1, wherein the net 1 has a mesh aperture ratio of 30% or more. 3. One or both of the net 1 and the short fibers 2 are made of the same resin or a similar resin as the cabinet side, and are heat-sealed to the sound hole portion so as to cover the speaker sound hole of the cabinet. The speaker net according to claim 1 or 2, which is provided. 4. The speaker net according to claim 1, 2 or 3, wherein an appropriate region of the net 1 is formed into a three-dimensional shape. 5. The method according to claim 1, wherein either or both of the net 1 and the short fibers 2 are polyester fibers or fibers mainly containing the fibers. Speaker net.