JPS62181597A - Speaker system - Google Patents

Abstract

PURPOSE:To control the extension of the directional characteristic by bisecting the buffer of a closed-type cabinet and connecting the respective buffers so that the central part can move forward and backward (including rotation). CONSTITUTION:The center sides of the bisected buffers 22 are connected with a pair of joiners 24, and a packing 23 is mounted on the outer periphery of the buffers 22. The packing 23 is made engaged in a groove 25 provided in the both side-plates of the cabinet 21 with a width slightly narrower than the diameter of the packing 23. A closed-type speaker system is thus formed. A straight groove 26 is provided in the ceiling and bottom plates of the cabinet 21 along the center axis of the cabinet, into which the protruding part of the joiners 26 is fitted. Accordingly, the joiners 24 slides stright along the center axis. Therefore, the both buffers 22 can be varied in angle with exactly the same degrees of angle.

Description

DETAILED DESCRIPTION OF THE INVENTION [9 Industrial Applications] The present invention relates to a speaker system in which the directional characteristics of a speaker can be controlled.

[Conventional technology]

FIG. 4 is a plan cross-sectional view showing a speaker system that has improved the conventional directional characteristics. In the figure, (11) is a closed speaker cabinet, and (12) is a speaker unit.

As shown in the figure, the rose '7 of cabinet 1-(11)
The cabinet surface (A) is divided into two parts, and a speaker unit I-(12) is attached to each part so as to face outward, thereby forming a so-called pentagonal closed cabinet 1-(11). There is. As a result, the speaker unit l-(1
2) The directional characteristics of the sound emitted from cabinet 1-(
11) is improved in the outward direction.

[Problem that the invention seeks to solve]

However, in the conventional closed cabinet structure, since the opening angle of the baffle surface is constant, the directional characteristics only have a certain effect, and it is difficult to control this freely. there were.

B's invention was made to solve the above-mentioned problems, and its purpose is to obtain a speaker system that can control the directional characteristics.

[Means for solving problems]

In the speaker system according to the present invention, the baffle of a closed cabinet is divided into two parts from the center, the central part is connected with a hinge or a bellows, and a packing made of soft material is attached to the outside of the baffle, and this is attached to both sides of the cabinet. The central part of the baffle can be moved back and forth in the central part of the cabinet centering on the position of the packing by fitting into the groove provided in the baffle, thereby making it possible to adjust the opening angle of both baffles. It is.

[Effect]

In the speaker system according to the present invention, the directional characteristics of the speaker can be controlled by varying the opening angle of both baffle surfaces.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the drawings. 1st
In Figures (A) to 3(A), (21) indicates the closed cabinet 1. , (22) is a baffle divided into two parts, (2
3) is a packing made of soft material such as rubber that is attached to the outside of each baffle, and (24) is a packing made of a soft material such as rubber that is attached to the outside of each baffle.
22) at the center of the cabinet, and the packing (23) slides in the left-right direction within grooves (25) provided on both side plates of the cabinet 1-(21).

In this way, the two baffles (22) are connected at the center with the hinge (24), and the packing (23) is attached to the outside of the hinge (24).
The packing (23) of 2) is fitted into the groove (25) provided on both sides of the cabinet (21) so that the width dimension is slightly smaller than the diameter of the packing (23), thereby forming a closed speaker system. It is formed.

Here, the axis of the hinge (24) is slightly longer (prepared) and protrudes several millimeters from the upper and lower edges of the baffle (22).On the other hand, the top and bottom plates of the cabinet (21) are Linear 1ζ along the central axis of the cabinet
The protruding part of the hinge (24) is fitted into the provided groove (213)l, so that the hinge (24) fits into this groove (213)l.
B) sliding in a straight line on the central axis along t, thereby ensuring that both baffles (22) are variable at the same angle;

As a result, the left and right speaker units face outward as shown in FIG. 1(A) (from the position, the left and right speaker units 1- Both baffles (22) can be moved to positions where they face each other, thereby making it possible to arbitrarily control the directional characteristics of the speaker.

Furthermore, FIGS. 1(B) to 3(B) are plan sectional views of speaker systems according to other embodiments, and their configurations are almost the same as those in FIGS. 1(AJ to 3(A)). However, there are some differences in how the buff/L (22) can be moved.

That is, in FIGS. 1(B) to 3(B), the central portions of both baffles (22) are connected by a bellows (27), and guide pins (29) are provided above and below these baffles. . The bellows (27) prevents air leakage from the space created between the two baffles, and can be freely expanded and contracted to accommodate changes in the distance between the baffles. Also, the guide bin (29) is engaged.

The sliding arcuate groove (28) is a closed cabinet t
b) They are provided on the top plate and bottom plate of (21), respectively. The center portions of both baffles (22) rotate in an arc around the position of the packing (23). In addition, each movable position of the baffle in each of FIGS. 1 to 3 (A) and (B) corresponds to each other. In addition, the configuration shown in Figure 3(C) allows the left and right baffles (22) to rotate independently, so the left and right speaker units can be moved in the same direction, depending on the size of the bellows (27). It can also be directed to. As a result, the directional characteristics of the speaker can be set on an axis other than the central axis of the cabinet while the position of the cabinet ν1 remains fixed.

In the above embodiment, the baffle of the closed cabinet is divided into left and right halves, but it may be divided into upper and lower halves, thereby controlling the directional characteristics of the speaker in the vertical direction. Further, although the speaker unit has been described as having one unit on each side, the same effect can be obtained even if two or more speakers or a multiway speaker is attached to one side.

〔Effect of the invention〕

As described above, according to the present invention, the baffle A of the closed cabinet is divided into two parts, and the respective baffles are connected to each other so that the central part can move back and forth (including rotation), thereby expanding the directional medical characteristics. can be controlled. Also,
Additional parts include hinges, bellows, packing, etc., and this configuration can be manufactured at low cost.

[Brief explanation of drawings]

Figure 1 (A), (B), etc. Figure 2 (A), (B) and Figure 3 (A), (B), (C) respectively show the configuration of the speaker system according to the embodiment of Party B's invention. FIG. 4 is a plan sectional view showing a conventional speaker system. In the figure, (11) and (21) are closed cabinet I, (12) is a speaker unit, (
22) is a baffle, (23) is a packing, (24) is a hinge, (25) is a groove, (26) is a linear groove, (27) is a bellows, (28) is an arcuate groove, (29) is a Guide Pino. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims (2)

[Claims] (1) The baffle surface of the closed cabinet is divided into two parts, and both baffles are connected at the center, and the packing is provided on the outside and the packing is engaged and slid into the grooves provided on both sides of the cabinet. A speaker system characterized in that a central portion of the baffle is movable back and forth on a central axis of the cabinet using the packing position as a fulcrum. (2) The baffle surface of the closed cabinet is divided into two parts, and the central part of both baffles is configured to rotate back and forth using the outer edge of the cabinet as a fulcrum. speaker system.