JP2920552B2 - Manufacturing method of thin speaker - Google Patents

Description

The present invention relates to a method for manufacturing a thin speaker using a piezoelectric sounding body.

[Prior Art] Conventionally, as a thin speaker of this type, two plastic cardboards provided with a hole smaller than the diameter of a piezoelectric sounding body, and a piezoelectric speaker such that the outer peripheral end of the hole matches the outer peripheral end of the piezoelectric sounding body. A cavity is formed by sandwiching the sounding body and attaching a membrane member to the surface of the plastic cardboard to form a space formed by the film and the piezoelectric sounding body and a space formed by the center of the plastic cardboard and the liner. Are known.

[Problem to be Solved by the Invention] However, when a conventional thin speaker is wired, a lead wire is inserted into a space formed by a step and a liner in a direction parallel to a direction in which a center step extends. In the vertical direction, it is necessary to provide a wiring hole at the center and to pass the lead wire.

In addition, if plastic cardboard is used, the size and shape of the space (cavity) formed by the center step and the liner cannot be freely designed. The piezoelectric sound generation for bass and treble in the direction in which the center step extends. When the bodies are arranged side by side, these piezoelectric sounding bodies share a cavity, and the sound quality is degraded. Therefore, freedom in acoustic design due to reasons such as the inability to juxtapose piezoelectric sounding bodies for bass and treble in the direction in which the center step extends. There is a problem that the degree is limited.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method of manufacturing a thin speaker that is easy to manufacture and can increase the degree of freedom in acoustic design.

[Means for Solving the Problems] According to the present invention, at least one piezoelectric sounding body is a first sounding body.
A method of manufacturing a thin speaker sandwiched between a first surface of a second panel and a second surface of a second panel, wherein the first panel has a diameter smaller than a diameter of the piezoelectric sounding body. Making a first hole, and placing the piezoelectric sounding body on the first surface of the first panel so that an outer circumferential end of the piezoelectric sounding body contacts an outer circumferential end of the first hole; The second panel is divided into a plurality of panel pieces so that a second hole and a wiring groove having a diameter smaller than the diameter of the piezoelectric sounding body when formed are formed, and the second surface is formed. The divided panel pieces are placed on the first piezoelectric speaker on which the piezoelectric speaker is mounted so that the first panel is in contact with the first surface and the outer edge of the second hole is in contact with the outer edge of the piezoelectric speaker. And a method of manufacturing a thin speaker including a step of bonding the speaker to the panel.

Also, a method for manufacturing a thin speaker in which at least one piezoelectric sounding body is located on an adhesion surface between a first surface of a first panel and a second surface of a second panel, wherein
A first hole having a diameter smaller than the diameter of the piezoelectric sounding body is formed in the panel, and a second hole having a diameter equal to or larger than the diameter of the piezoelectric sounding body and a wiring groove are formed when combined. Dividing the second panel into a plurality of panel pieces, and attaching the divided panel pieces to the first panel such that the second holes have the same central axis as the first holes. And inserting the piezoelectric sounding body into the second hole,
A method for manufacturing a thin speaker including the step of bonding the outer peripheral end of the hole to the outer peripheral end of the piezoelectric sounding body.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

Here, FIG. 1A is a front view of a thin speaker obtained by the manufacturing method of the present invention. FIG. 1 (b) is a sectional view taken along the line AA 'of FIG. 1 (a).

A first embodiment of the present invention will be described with reference to FIGS. 1 (a) and 1 (b).

First, a hole 12 for attaching a piezoelectric sounding body is provided on a panel plate 11 made of styrene foam having an adhesive material (double-sided tape or the like: not shown) provided on one surface. The size of the hole 12 is smaller than the diameter of the piezoelectric sounding body to which the inner diameter is attached.

In this embodiment, three holes 12a for attaching a piezoelectric sounding body for bass are provided vertically, two rows are provided in a total of six holes, and three holes 12b for attaching a piezoelectric body for treble are provided vertically. Hole 12b
Are provided in parallel between two rows of holes 12a.

Next, from the side of the panel material 11 where the adhesive is provided,
On the holes 12a and 12b, a piezoelectric sounding body 13a for bass and a piezoelectric sounding body 13b for treble are attached, respectively. At this time, the piezoelectric sounding body 1
The outer peripheral ends of 3a, 13b are overlapped with the outer peripheral ends of holes 12a, 12b, and if pressure is applied, the piezoelectric sounding body 13a,
13b is fixed to panel 11.

Subsequently, the piezoelectric sounding body 13 is sandwiched between the panel material 11 and the panel material 11 using panel pieces 14a, 14b, and 14c obtained by dividing the styrofoam panel material 14 like the panel material 11 into three.

Each of the panel pieces 14a and 14b has a piezoelectric sounding body 13a.
And a groove 16a for accommodating the lead wire 131 of each piezoelectric sounding body 13a. In this embodiment, the panel pieces 14a and 14b have the same shape.

The panel piece 14c has a hole 15b having a diameter slightly smaller than the diameter of the piezoelectric sounding body 13b, a groove 16b for accommodating the lead wire 132, and a groove 1b.
7 are provided.

These panel pieces 14a, 14b, and 14c are connected to the panel material 11 such that the outer peripheral end of each hole overlaps the outer peripheral end of the piezoelectric sounding body.
, And sandwich the piezoelectric sounding body between the panel materials 11 and 14. The panel pieces 14a, 14b, and 14c are fixed by the adhesive of the panel material 11, respectively.

The panel pieces 14a, 14b, and 14c are sized so that there is a predetermined space between the panel pieces 14a and 14c and between the panel pieces 14c and 14b. Is formed.

Next, the connection wires 19 are arranged in the grooves 17 and 18, respectively, and the lead wires 132 and 131 are connected.

After completing the wiring, close the end of the groove 18 with the panel piece 20,
Paste a poster or the like on the surface of panel 14 and insert holes 15 and grooves 1
6, 17, and 18 are covered to form a cavity.

Further, a metal plate (aluminum plate or the like) 21 is attached to the holes 12a and 12b of the panel plate 11 and fixed with a polyester tape or the like (not shown).

As described above, when the metal plate 21 is attached, an improvement in sound pressure at a low frequency is observed.

Finally, the thin speaker is housed in, for example, an aluminum frame (not shown). At this time, panel material 11 and panel material
It is good to stick cellophane tape etc. on the side of 14.

As described above, according to the present embodiment, it is only necessary to dispose the connection lines in the grooves, so that the manufacturing process is simplified, and the inspection for disconnection or the like becomes easy.

Further, in the present embodiment, the panel material 14 is divided into three, but the present invention is not limited to this.
Various changes such as changing the width and shape of the groove are possible.

Next, a second embodiment will be described with reference to FIG. Here, FIG. 2 is an enlarged view of a portion corresponding to the B-line portion in FIG. 1B of the thin speaker obtained in the second embodiment.

Since the second embodiment is almost the same as the first embodiment, the description of the same parts will be omitted.

The second embodiment is different from the first embodiment in that the piezoelectric sounding body is not sandwiched between two panel materials. Instead, the outer circumferential end of the piezoelectric sounding body is fitted to the outer circumferential end of a hole provided in one panel material. It is something to stick.

Therefore, in the present embodiment, first, the panel member 24 is attached to the panel member 21 provided with the adhesive on one surface. At this time, the center axes of the holes 22 and 25 are set to be the same.

Next, the piezoelectric sounding body 23 is inserted into the hole 25, the outer peripheral end of the piezoelectric sounding body 23 is pressed against the outer peripheral end of the hole 22, and bonded by an adhesive.

 The other points are the same as in the first embodiment.

[Effects of the Invention] According to the present invention, at least one piezoelectric sounding body is the first
A first hole smaller than a diameter of the piezoelectric sounding body in the first panel for manufacturing a thin speaker sandwiched between a first surface of the first panel and a second surface of the second panel; And the piezoelectric sounding body is placed on the first surface of the first panel so that the outer circumferential end of the piezoelectric sounding body comes into contact with the outer circumferential end of the first hole. The second panel is divided into a plurality of panel pieces such that a second hole smaller than the diameter of the piezoelectric sounding body and a wiring groove are formed, and the second surface contacts the first surface. And bonding the divided panel pieces to the first panel on which the piezoelectric sounding body is mounted so that the outer circumferential end of the second hole contacts the outer circumferential end of the piezoelectric sounding body. And that at least one piezoelectric sounding body is the first
In order to manufacture a thin loudspeaker located on the bonding surface between the first surface of the first panel and the second surface of the second panel, the first panel has a diameter smaller than the diameter of the piezoelectric sounding body. The second panel is divided into a plurality of panel pieces such that a first hole is formed and, when combined, a second hole having a diameter equal to or greater than the diameter of the piezoelectric sounding body and a wiring groove are formed; So that the second hole has the same central axis as the first hole,
The divided panel pieces are bonded to the first panel, and the piezoelectric sounding body is inserted into the second hole.
By bonding the outer peripheral end of the hole to the outer peripheral end of the piezoelectric sounding body, it is possible to provide a method of manufacturing a thin speaker that is easy to manufacture and has a wide degree of freedom in acoustic design.

[Brief description of the drawings]

FIG. 1 shows a first embodiment of a thin loudspeaker obtained by the method of manufacturing a thin loudspeaker of the present invention, wherein (a) is a plan view, (b) is a sectional view taken along the line AA ', and FIG. 2 is a second embodiment. It is an expanded partial sectional view showing an example. 11: Panel material, 12a, 12b, 12c: Hole, 13a: Low-pitched piezoelectric speaker, 13b: High-pitched piezoelectric speaker, 14a, 14b, 14c ...
Panel pieces, 15a, 15b ... holes, 16a, 16b, 17, 18 ... grooves, 19 ...
... Connecting wires, 20 ... Panel pieces, 21 metal plates, 21, 24 ...
Panel material, 22, 25 ... holes, 23 ... piezoelectric sounding body.

Claims (2)

(57) [Claims] 1. A method of manufacturing a thin speaker in which at least one piezoelectric sounding body is sandwiched between a first surface of a first panel and a second surface of a second panel, the method comprising: A first hole having a diameter smaller than the diameter of the piezoelectric sounding body is formed in the first panel, and the piezoelectric sounding body is so formed as to contact an outer peripheral end of the piezoelectric sounding body with an outer peripheral end of the first hole. The second panel is placed on the first surface of the first panel, and the second panel is formed such that when combined, a second hole having a diameter smaller than the diameter of the piezoelectric sounding body and a wiring groove are formed. Dividing into a plurality of panel pieces, wherein the second surface is in contact with the first surface and the second surface is
Bonding the divided panel piece to the first panel on which the piezoelectric sounding body is mounted so that the outer circumferential end of the hole contacts the outer circumferential end of the piezoelectric sounding body. Method. 2. A method of manufacturing a thin speaker in which at least one piezoelectric sounding body is located at an adhesion surface between a first surface of a first panel and a second surface of a second panel, A first hole having a diameter smaller than the diameter of the piezoelectric sounding body is formed in one panel, and when combined, a second hole having a diameter equal to or greater than the diameter of the piezoelectric sounding body and a wiring groove are formed. The second panel is divided into a plurality of panel pieces, and the divided panel pieces are combined with the first panel such that the second hole has the same central axis as the first hole. Bonding the piezoelectric sounding body into the second hole, and bonding an outer peripheral end of the first hole to an outer peripheral end of the piezoelectric sounding body.