close

Вход

Забыли?

вход по аккаунту

?

DESCRIPTION JPH08140189

код для вставкиСкачать
Patent Translate
Powered by EPO and Google
Notice
This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate,
complete, reliable or fit for specific purposes. Critical decisions, such as commercially relevant or
financial decisions, should not be based on machine-translation output.
DESCRIPTION JPH08140189
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a
speaker unit that facilitates the assembly of a small speaker unit.
[0002]
2. Description of the Related Art A speaker unit is one electro-acoustic transducer that converts
an electrical signal from an amplifier into an acoustic signal, and an example of the configuration
of its main part is as shown in FIG. 3 and FIG.
[0003]
That is, the ring-shaped magnet 2 is disposed on the yoke 1, and the ring-shaped plate 3 is
similarly disposed on the magnet 2 to constitute a magnetic circuit.
The contact steps 7 and 8 formed on the lower end 5 of the frame 4 are in contact with the
upper portions of the magnet 2 and the plate 3, and the peripheral side of the magnet 2 is
provided on the lower end 5 of the frame 4 The ring-shaped flange 6 abuts. Further, in the
magnetic gap formed between the yoke 1 and the plate 3, a voice coil 9 is disposed.
[0004]
12-04-2019
1
When assembling the main part of such a speaker unit, for example, as shown in FIG. 5, after an
appropriate amount of adhesive is applied on the yoke 1 and the magnet 2 is fixed, the same
amount of adhesive is similarly applied on the magnet 2 Apply and fix the plate 3 and apply an
appropriate amount of adhesive on the magnet 2 and the plate 3 and the peripheral side of the
magnet 2 to fix the contact steps 7, 8 and the flange 6 of the lower end 5 of the frame 4 doing.
[0005]
By the way, in the above-described method of assembling the main parts of the speaker unit, it is
necessary to apply an adhesive every time the individual members are assembled, which not only
increases the number of assembling steps, but also very much. In the case of a micro-speaker
unit which is small, since the dimensions of the individual members are extremely small, it is
difficult to control the amount of application of the adhesive, which is an increase or decrease in
the amount of application of the adhesive.
[0006]
The present invention has been made in view of such circumstances, and an object thereof is to
provide a speaker unit capable of facilitating the assembly of a small speaker unit.
[0007]
According to the present invention, there is provided a speaker unit comprising a frame having a
flange on a magnetic circuit comprising a yoke, a magnet and a plate in order to achieve the
above object. The flange of the frame is disposed on the periphery excluding the bottom portion
of the frame, and the yoke, the magnet, the plate, and the frame are fixed to each other by
injection of an adhesive into the gap between the magnetic circuit and the flange. It is
characterized by becoming.
[0008]
In the speaker unit according to the present invention, the yoke, the magnet, the plate and the
frame constituting the magnetic circuit are stacked, and then the adhesive is injected into the gap
formed between the magnetic circuit and the flange of the frame. Since the yoke, the magnet, the
plate and the frame are fixed to each other, not only the adhesive can be applied at one time, but
also control of the application amount of the adhesive becomes easy.
[0009]
12-04-2019
2
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be
described in detail with reference to the drawings.
In the drawings described below, the parts common to those in FIGS. 3 to 5 are given the same
reference numerals, and the redundant description will be omitted.
[0010]
FIG.1 and FIG.2 shows the principal part which concerns on one Example of the speaker unit of
this invention.
[0011]
As shown in these figures, the member configuration of the main part of the speaker unit is
substantially the same as that of the conventional one, but the shape of the lower end portion 5
of the frame 4 is different from that of the conventional one.
[0012]
That is, the lower surface 12 of the lower end portion 5 of the frame 4 is flat, and the flange 13 is
suspended from the lower end portion 5.
The height dimension of the flange 13 is substantially the same as the height dimension when
the yoke 1, the magnet 2 and the plate 3 constituting the magnetic circuit are stacked.
[0013]
Further, a U-shaped gap is formed between the yoke 1, the magnet 2 and the plate 3 and the
lower end portion 5 of the frame 4 and the flange 13 constituting the magnetic circuit, and an
epoxy or acrylic adhesive is formed in the gap By filling 10, the yoke 1, the magnet 2, the plate 3
and the lower end 5 of the frame 4 and the flange 13 are fixed to each other by the adhesive 10.
[0014]
The main parts of the speaker unit having such a configuration are assembled as follows.
12-04-2019
3
That is, first, the magnet 2 is placed on the yoke 1, the plate 3 is placed on the magnet 2, and the
lower end 5 of the frame 4 is placed on the plate 3.
In this state, a U-shaped gap is formed between the yoke 1, the magnet 2 and the plate 3 which
constitute the magnetic circuit, and the lower end 5 of the frame 4 and the flange 13.
The gap is about 0.2 to 1.2 mm, which is a gap sufficient to inject the epoxy or acrylic adhesive
10.
Next, the adhesive 10 is filled in the U-shaped gap by injecting the adhesive 10 into the gap from
the lower side of the magnetic circuit.
[0015]
Thereafter, along with the solidification of the adhesive 10, the peripheral side surfaces of the
yoke 1, the magnet 2 and the plate 3 constituting the magnetic circuit are fixed to the inner
surface of the flange 13 of the lower end 5 of the frame 4. It will be done.
[0016]
Thus, in the present embodiment, after the yoke 1, the magnet 2, the plate 3 and the frame 4
constituting the magnetic circuit are stacked, the yoke 1, the magnet 2 and the plate 3, the lower
end portion 5 of the frame 4 and the flange 13 The epoxy or acrylic adhesive 10 is injected into
the U-shaped gap formed between the two, and the peripheral surfaces of the yoke 1, the magnet
2 and the plate 3 are fixed to the inner surface of the flange 13 of the lower end 5 of the frame 4
As the members are fixed to each other, not only the application of the adhesive 10 can be done
at one time, but also the management of the application amount of the adhesive 10 becomes
easy, and the assembly of a small speaker unit is possible. It becomes easy.
[0017]
In the present embodiment, the case where the adhesive 10 is injected into the U-shaped gap
formed between the magnetic circuit and the lower end 5 of the frame 4 and the flange 13 has
been described, but the present invention is not limited to this example. An adhesive may be
applied to the bonding surface between the lower end 5 of the frame 4 and the plate 3, in which
case the bonding site between the lower end 5 of the frame 4 and the plate 3 is also fixed.
12-04-2019
4
Therefore, the reinforcing effect of the outer peripheral portion of the magnetic circuit can be
enhanced.
[0018]
As described above, according to the speaker unit of the present invention, after the yoke, the
magnet, the plate and the frame constituting the magnetic circuit are stacked, they are formed
between the magnetic circuit and the flange of the frame. The yoke, magnet, plate and frame are
fixed to each other by injecting the adhesive into the gap, which makes it possible not only to
apply the adhesive at one time but also to control the application amount of the adhesive easily.
As a result, the assembly of a small speaker unit can be facilitated.
[0019]
Brief description of the drawings
[0020]
1 is a half-cut cross-sectional view showing the main part according to an embodiment of the
speaker unit of the present invention.
[0021]
2 is a bottom view showing the speaker unit of FIG. 1 in half.
[0022]
3 is a half cut sectional view showing the main part of the conventional speaker unit.
[0023]
4 is a bottom view showing the speaker unit of FIG. 3 in half.
[0024]
5 is a diagram showing a method of assembling the speaker unit of FIG.
[0025]
Explanation of sign
12-04-2019
5
[0026]
1 yoke 2 magnet 3 plate 4 frame 5 lower end 9 voice coil 10 adhesive 13 flange
12-04-2019
6
Документ
Категория
Без категории
Просмотров
0
Размер файла
12 Кб
Теги
description, jph08140189
1/--страниц
Пожаловаться на содержимое документа