JPH05244682

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DESCRIPTION JPH05244682
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a
speaker system in which a tweeter (high-pitched loudspeaker) unit is pivotable so as to easily
obtain an optimum sound image.
[0002]
2. Description of the Related Art In a speaker system constructed by incorporating a tweeter unit
and a woofer (bass loudspeaker) unit into a cabinet, the cabinet baffle plate is inclined to obtain
an appropriate sound image, and the inclined surface is tweeter. Some units have been
assembled.
[0003]
There is also a speaker system in which an adjustable-angle fin is provided on the front of a full
range speaker.
[0004]
However, in the prior art in which the baffle plate is inclined, in order to change the sound image,
the cabinet has to be installed upside down, and the obtained sound image can be obtained by
using the cabinet. There are only two types: upright and inverted.
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Therefore, in order to obtain a desired sound image, it is necessary to move the cabinet each
time, and as a result, it is difficult to easily obtain an optimum sound image.
[0005]
Also, in the prior art provided with fins, although the sound quality can be changed by the fins, it
is almost impossible to change the sound image.
The present invention has been made in view of these problems, and it is an object of the present
invention to provide a speaker system capable of easily obtaining an optimum sound image.
[0006]
In order to achieve the above object, in the speaker system 1 in which the tweeter unit 3 and, if
necessary, the woofer unit 4 are incorporated in the cabinet 2, the tweeter unit 3 can be
vertically pivoted. To support the side front of the tweeter unit 3 to the cabinet 2 by the shaft
piece 9 or the boss 18 and engage the pin 12 with the engaging portion 10 so as to be able to
stand still at any rotational position, or a tweeter The cabinet 2 is provided with elastic members
8 slidingly contacting the side surfaces of the unit 3.
[0007]
In the speaker system of the above construction, since the side front portion of the tweeter unit 3
is pivotally supported by a part of the cabinet 2, the tweeter unit 3 is pivoted in one direction
about the pivotal portion.
This makes it possible to easily obtain an optimal sound image for the viewer without moving the
cabinet 2. Further, since the pin 12 is engaged with the engaging portion 10 or the tweeter unit
3 is in sliding contact with the elastic member 8, the tweeter unit 3 can stand still at any
rotational position.
[0008]
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1 to 3 show an embodiment of the present invention. This is to rotate the tweeter unit 3 by the
spiral rod 5 and the stopper 7. The shaft pieces 9 project from the front sides of both sides of the
tweeter unit 3 and the inner surface of the assembly cover 13 which is configured separately
from the cabinet 2 so as to be incorporated in the cabinet 2 is the shaft pieces 9 Form a
mounting groove 15 rotatably assembled. The tweeter unit 3 rotates about the shaft piece 9.
[0009]
The spiral rod 5 is composed of a shaft 11 having a screw thread on its circumferential surface,
and a disk-like knob 6 which is provided at the upper end thereof and which is easy to apply a
rotational force by hand. A stopper 7 having a pin 12 projecting laterally is screwed to the shaft
11. An engagement portion (groove) 10 with which the pin 12 of the stopper 7 engages is
provided at the rear of one side surface of the tweeter unit 3. Further, the shaft 11 of the spiral
rod 5 is inserted into the hole 14 formed in the assembly cover 13.
[0010]
In this embodiment, the stopper 7 is raised or lowered by rotating the knob 6 of the spiral rod 5,
and the rear portion of the tweeter unit 3 engaged with the pin 12 of the stopper 7 at the
engaging portion 10 is Ascending or lowering with the front shaft piece 9 as an axis, the rotation
of the tweeter unit 3 is achieved. Since the pin 12 and the engaging portion 10 are engaged, the
tweeter unit 3 can stand still at any rotational position. The rotation angle of the tweeter unit 3 is
set to 20 degrees in the vertical direction.
[0011]
4 and 5 show another embodiment of the present invention. This is to rotate the tweeter unit 3
by pressing its front surface with a finger or the like. A hole-shaped catch 16 is formed on both
side surfaces of the tweeter unit 3 and a boss 18 rotatably fitted on the catch 16 is protruded
from a mounting frame 17 attached to the cabinet 2. In addition, a resilient material 8 in sliding
contact with the tweeter unit 3 is attached to the mounting frame 17. The elastic member 8
keeps the rotational position of the tweeter unit 3 immobile by the frictional force, and therefore,
a material rich in elastic force such as a foamed polyethylene resin and a sponge is optimum.
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[0012]
In the speaker system 1 of the present embodiment, when the upper or lower part of the front
surface of the tweeter unit 3 is pressed, the tweeter unit 3 is rotated about the boss 18 while
sliding on the elastic material 8 and the rotational position is the elastic material 8 It is
maintained by the friction with.
[0013]
The usage example of the speaker system 1 of this invention is shown in FIG.
This is the speaker system 1 of the present invention disposed horizontally above and below the
television 19. The tweeter unit 3 of the upper speaker system 1 pivots downward, and that of the
lower loudspeaker system 1 pivots upward, thereby obtaining an optimum sound image for the
viewer.
[0014]
FIG. 7 shows another use example of the speaker system 1 of the present invention. This is a
system in which two speaker systems 1 are vertically installed on the left and right of the
television 19. By turning the tweeter units 3 of both speaker systems 1 inward, an ideal sound
image can be obtained. In the above, the assembly cover 13 or the mounting frame 17
configured separately from the cabinet 2 is attached to the cabinet 2 and the tweeter unit 3 is
attached to the assembly cover 13 or the mounting frame 17, but the tweeter The unit 3 can also
be attached directly to the cabinet 2. However, it is preferable to configure as the former because
the mounting accuracy can be secured.
[0015]
As described above, according to the present invention, since the tweeter unit is made rotatable
and can be stopped at any rotation position, the speaker can be placed in any positional
relationship such as up, down, left or right. Also, the viewer has the excellent effect of being able
to easily obtain an optimal and ideal sound image without the laborious task of moving the
cabinet.
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