close

Вход

Забыли?

вход по аккаунту

?

JPS63116600

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 JPS63116600
[0001]
INDUSTRIAL FIELD OF INVENTION The present invention relates to an electrodynamic speaker
with improved acoustic characteristics and improved space factor. 2. Related Art In recent years,
for the purpose of improving the acoustic characteristics of the electrodynamic speaker from 2 to
7, the electrodynamic speaker of a system in which the diaphragm shape is made flat and the
sound pressure frequency characteristic is flattened is put to practical use. It has been A
conventional electrodynamic speaker will be described below with reference to the drawings.
Conventionally, an electrodynamic speaker is generally configured as shown in FIG. In FIG. 6, 1 is
a conical cone-shaped diaphragm having a circular hole for voice coil insertion at the center, 2 is
a frame, 3 is an edge joined to the outer periphery of the diaphragm and further frame 2 joined
to the outer periphery 4 is a voice coil, 5 is a dust cap, 6 is a damper, and R is a magnetic circuit.
The operation of the electrodynamic speaker configured as described above will be described
below. Conical-cone-shaped diaphragm 1 in which voice coil 4 vibrates up and down by passing
current through voice coil 4 inserted in magnetic gear tube a of magnetic circuit 7 and
consequently joined to the upper end of voice coil 4. And, the dust cap 5 joined to the upper
surface of the cone-shaped diaphragm 1 is vibrated up and down, and the air is vibrated by this 3
ии ? to generate a sound. However, in this type of electrodynamic speaker, as shown in FIG. 7, the
cone surface for vibrating air has a circular button shape and is axially symmetrical with respect
to the center line, so that, for example, the cone The sound radiated from the surfaces C and d is
opposite in phase at a certain frequency, causing a peak dip in the sound pressure frequency
characteristic as shown in FIG. 8e. (The phenomenon with the following is called the front room
effect. Therefore, in recent years, an electrodynamic speaker having a configuration as shown in
FIG. 9 has been developed and used for a long time. In FIG. 9, reference numeral 8 is a flat
diaphragm, and 9 is a cambered cone joined to the lower surface of the flat diaphragm 8 when it
is joined to the -1 end of the voice coil 4. In the electrodynamic speaker configured in this way,
11-05-2019
1
the voice coil 4 vibrates downward by -4-2, and the coupling in which the flat plate diaphragm 8
is joined to the -1 end of the voice coil 4 "Through the cone 9"-vibrates downward, thereby
vibrating the air to generate a sound, and since the surface of the diaphragm that vibrates the air
is flat, it is on the same surface The front chamber effect can be reduced, and the occurrence of
the phase difference is small, as shown in FIG. 8, and a flat sound pressure frequency
characteristic with a slight peak dip can be obtained.
Problems to be solved by the invention However, in such a conventional configuration, the
occurrence of the anterior chamber effect can be reduced, but it occurs when driving the flat
diaphragm 8 as shown in FIG. If the position of the node 10 must be accurately driven by the
coupling cone 9 for driving the 511 plate diaphragm and the condition of this node driving is
satisfied, the plate diaphragm 8 is Because of the symmetrical structure, there is a problem that a
phase difference occurs between the central portion of the diaphragm and the outer peripheral
portion of the diaphragm, and a peak dip occurs in the sound pressure frequency characteristic
as shown in the eleventh example. The present invention solves such a problem, and by using a
triangular cone-shaped diaphragm for the diaphragm, it is possible to eliminate the front
chamber effect and provide an electrodynamic loudspeaker having a flat sound pressure
frequency characteristic. It is an object of the present invention to provide an electrodynamic
loudspeaker aiming at the direction of space factor by making the frame shape into a triangular
shape. Means for Solving the Problems In order to solve this problem, the present invention
supports a triangular plate diaphragm, a triangular edge portion disposed on the outer periphery
of the plate diaphragm, and an outer periphery of the edge portion. A triangular-shaped frame
and a triangular cone-shaped coupling cone, one end of which is joined to the two ends of the
voice coil and the other end of which is joined to the lower surface of the flat diaphragm, are
constructed. With this configuration, the triangular flat diaphragm and the diaphragm that
vibrates air by 17 become asymmetric with respect to the voice coil drive position, respectively.
Even if the position can not be accurately driven by the coupling cone for driving the flat plate
diaphragm, although the phase difference due to the vibration of each surface of the diaphragm
is generated, the phase is different, so that the front chamber effect can be reduced. Furthermore,
in the case of using a triangular pyramidal coupling cone capable of accurately driving the
position of a node generated when driving a 6 ? Ц -triangular plate vibration plate, the
generation of the anterior chamber effect occurs. It is possible to eliminate it, and this makes it
possible to equalize the sound pressure frequency characteristics. Besides, by making the frame
shape into a triangle shape, it is possible to arrange the speakers adjacent to each other and to
arrange them in a corner, and to be able to make an electrodynamic speaker aiming at the
direction of space factor "-2. . Embodiment An embodiment of the present invention will be
described with reference to the drawings. The same reference numerals as in FIGS. 6 to 11
denote the same parts.
11-05-2019
2
FIG. 1 is a plan view showing the configuration of an electrodynamic speaker according to an
embodiment of the present invention. In FIG. 1, 11 is a flat plate diaphragm having a triangular
shape, and 12 is disposed on the outer periphery of the flat plate diaphragm. 13 is a triangular
shaped frame for supporting the outer periphery of the edge portion 12, and 14 is an attachment
provided at a part of each corner of the frame 137 '\-. These are screw holes, and 15 shows the
positions of the nodes of the triangular diaphragm 11. FIG. 2 shows the configuration of the
electrodynamic speaker according to the embodiment of the present invention shown in FIG. 1,
and is a cross-sectional view of the plan view shown in FIG. Where j is the center line of the
structural cross section, and 16 is a triangular pyramid shaped coupling cone 16 which drives
the position 15 of the node of the triangular shaped flat diaphragm. The operation of the
electrodynamic speaker configured as described above will be described below. As shown in FIG.
2, since the triangular flat diaphragm 11 is asymmetrical with respect to the center line f, the
node position 15 generated when driving the flat diaphragm 11 is Even if the drive can not be
driven accurately by the coupling cone 16, the phase difference due to the vibration of each
surface of the diaphragm is generated, but the front chamber effect can be reduced because the
respective phases are different. A triangular pyramid shaped cup which can obtain the
characteristics as shown in FIG. 3k, and can accurately drive the position 16 of the node
generated when driving the flat plate diaphragm 11 having a triangular shape. When the ring
cone 16 is used, it is possible to eliminate the occurrence of the front room effect, and when
viewed from the sound pressure frequency characteristic, a flat characteristic can be obtained as
shown in FIG. Further, as shown in FIG. 1, by making the frame 13 into a triangular shape, as
shown in FIG. 4, in the case of the electrodynamic speaker 1 of the present invention, adjacent
arrangement is possible, and further FIG. As shown in FIG. 5, when the dynamic loudspeaker 17
according to the present invention is used, installation in each corner 18 constituted by a wall or
the like in the room can be efficiently performed in a small space. As described above, according
to the present embodiment, the provision of the triangular flat plate diaphragm 11 and the
triangular cone coupling cone 16 can eliminate the front chamber effect, and the flat
characteristic of the sound pressure frequency characteristic In addition, by using an
electrodynamic speaker provided with a frame 13 in a triangular shape, adjacent placement and
corner placement of the loudspeakers are possible, and the base 9 is improved by a factor of -2.
It can be an electrodynamic speaker.
As described above, according to the present invention, according to the present invention, a
triangular flat diaphragm, a triangular frame for supporting the outer periphery of a triangular
edge disposed on the outer periphery of the flat diaphragm, and a voice coil at one end By
providing a triangular cone-shaped coupling cone joined to the upper end and the other end
joined to the lower surface of the flat diaphragm, the anteroom effect can be eliminated and
flattening of sound pressure frequency characteristics can be realized Also, by providing a
triangular flat diaphragm, even when it is possible to drive the nodes of the flat diaphragm, it is
possible to obtain the effect of being able to reduce the front chamber effect, In addition, since
11-05-2019
3
the frame shape is a triangular shape, it is possible to obtain an effect that an electrodynamic
speaker in which the space lift lid is improved can be obtained.
[0002]
Brief description of the drawings
[0003]
FIG. 1 is a plan view showing the configuration of an electrodynamic type Spy to 1 / force
according to an embodiment of the present invention, FIG. 2 is a structural cross-sectional view
of the electrodynamic speaker shown in FIG. Sound pressure frequency characteristics of an
electrodynamic speaker according to an embodiment of the present invention, and FIGS. 4 and 5
are layout diagrams of an electrodynamic speaker showing a practical example of the
electrodynamic speaker according to an embodiment of the present invention Fig. 6 is a
structural cross-sectional view of a conventional electrodynamic speaker (cone-shaped), Fig. 7 is
an enlarged cross-sectional view of a cone-shaped diaphragm portion of the electrodynamic
speaker shown in Fig. 6, and Fig. 8 is a conventional Sound pressure frequency characteristics of
the dynamic type loudspeaker (cone type and flat type), Fig. 9 shows a sectional view of a
conventional dynamic type speaker (flat type), and Fig. 10 shows the flat type shown in Fig. 9 Fig.
11 is an enlarged view showing the position of the node of the diaphragm, and Fig. 11 is a case
where the node driving can not be performed in the conventional electrodynamic speaker shown
in Fig. 10. A sound pressure frequency characteristic diagram.
4 и и и Voice coil, 6 и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и
и и и и и и и и и и и и и и и triangular plate diaphragm, 12 и и и triangular shaped edges, 13 frames ......
triangular, 14 ...... with up the use screw hole, 15 ...... position of the node of the flat diaphragm
16 ... ... A triangular cone-shaped coupling cone, 17 ..... An electrodynamic speaker according to
the present invention, 18 ..... Name of agent Attorney Nakao Toshio and others 1 'Figure 8 Figure
9 Figure 10 a Figure 11-Number of agencies
11-05-2019
4
Документ
Категория
Без категории
Просмотров
0
Размер файла
13 Кб
Теги
jps63116600
1/--страниц
Пожаловаться на содержимое документа