JP2005064796A - Mounting structure of speaker and array speaker device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide the mounting structure of a speaker in which the speaker can be easily connected to a printed substrate in a short time without using a lead wire with a connector or without changing the structure of the speaker itself, and which can prevent incorrect connection, and to provide an array speaker device. <P>SOLUTION: The mounting structure of the speaker includes the speaker 4 mounted on a front panel 3, a compression coil spring 10 having conductivity and elasticity one end of which is connected to signal input terminals 7, 7 of the speaker 4 via a fastening terminal 11. The other end of each compression coil spring 10 is brought into pressure-contact with and electrically connected to a land 13 formed on a printed substrate 12. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a speaker mounting structure and an array speaker device, and more particularly to an improvement in a connection structure between a speaker and a printed board.

  As a method of connecting a speaker to a printed circuit board, (1) a method of inserting and fixing a pair of signal input terminals projecting from the speaker into holes provided in the printed circuit board (for example, refer to Patent Documents 1 and 2). ), (2) a method of connecting a lead wire provided on a speaker to a connector on a printed circuit board via a connector (see, for example, Patent Documents 1 and 2), and (3) a leaf spring-like terminal provided on the speaker. There are generally three types of methods (for example, see Patent Documents 3 and 4) for press-contacting to a land (connection portion) of a printed board.

Japanese Utility Model Publication No. 3-3898 (FIGS. 1 and 2) Japanese Utility Model Publication No. 3-3783 (FIGS. 3 and 4) Japanese Patent Laid-Open No. 2002-305578 (FIG. 11) Japanese Patent Laid-Open No. 11-136795 (FIG. 1)

  As other connection methods, (4) one in which one connector provided on a speaker is connected to the other connector provided on a printed circuit board is also known (see, for example, FIG. 1 of Patent Document 3). .

However, the conventional connection methods described above have the following problems.
In the method of (1), a pair of signal input terminals protruding from the speaker are inserted into holes provided in the printed circuit board and electrically connected. When a thin pin-like terminal is inserted into the hole, the distance between the pair of terminals and the pair of terminals are electrically connected. If the distance between the holes does not match correctly, it cannot be inserted, and there is a problem that high dimensional accuracy is required for the distance between the terminal and the hole.
The method (2) of connecting the lead wire provided on the speaker to the printed circuit board through the connector has the advantage that the connector on the printed circuit board side can be provided at a position away from the mounting portion of the speaker. Since the attached lead wire is required and the connecting process between the connectors is necessary, there is a problem that the assembling work becomes complicated. In particular, in the case of an array speaker device in which a plurality of speakers are arranged in an array, check the connector on the printed circuit board side for each speaker and connect the connector on the lead wire side so that no connection error occurs between the connectors. It takes time to connect. Furthermore, when the lead wire is long, it is necessary to pay attention to the lead wire routing so as not to be caught by other electrical components.
(3) The method of pressing the leaf spring terminal provided on the speaker to the land of the printed circuit board requires a structure in which the leaf spring terminal can be fixed and a leaf spring terminal dedicated to the speaker must be manufactured. This increases the manufacturing cost. Further, since it is necessary to provide a fixing means for fixing the speaker to the printed board, the production of the printed board itself is troublesome and becomes a special board. In addition, when a plurality of fixing means are provided on the printed circuit board, a space for the fixing means is required, so that the mounting efficiency of electronic components is reduced.
The method (4) of connecting one connector provided on the speaker to the other connector provided on the printed circuit board has a problem that the size of the entire speaker increases because the connector on the speaker side protrudes to the side of the speaker. It was. In addition, since the speaker is supported by being floated from the printed circuit board by connecting the speaker on the printed circuit board side connector, it becomes a cantilever support structure, and the speaker is likely to swing due to vibration, impact, etc. and lacks stability. There was also a problem.

  The present invention has been made in order to solve the above-described conventional problems. The object of the present invention is to eliminate the need for a lead wire with a connector and to change the structure of the speaker itself. It is an object of the present invention to provide a speaker mounting structure and an array speaker device that can be easily connected to a printed circuit board in a short time and prevent connection errors.

  In order to achieve the above object, the speaker mounting structure according to the first invention is such that a speaker is attached to a front panel, and one end of a compression coil spring having conductivity and spring property is connected to a signal input terminal of the speaker, The other end of the compression coil spring is pressed against a land provided on the printed circuit board.

  An array speaker device according to a second invention is an array speaker device in which a plurality of speakers are mounted in an array on a front panel, and one end of a compression coil spring having electrical conductivity and spring property is provided at a signal input terminal of each speaker. The other end of the compression coil spring is connected to a land provided on the printed circuit board.

  According to the first and second inventions, the speaker can be electrically connected to the printed circuit board only by pressing the compression coil spring against the land of the printed circuit board without requiring a lead wire or a connector. Since the compression coil spring and the signal input terminal may be connected using a commercially available faston terminal or by soldering, it is not necessary to change the structure of the speaker itself. Since the land of the printed circuit board is provided in the mounting part of the speaker so as to correspond to the compression coil spring, if the speaker and the printed circuit board are positioned, it can be assembled in a short time without causing a connection error. This is advantageous in the case of an array speaker device having a speaker. Further, since the compression coil spring is linearly contacted with a certain length when pressed against the land, the connection reliability is also excellent.

Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings.
FIG. 1 is an external perspective view showing an embodiment of an array speaker device according to the present invention, and FIG. 2 is a sectional view showing a speaker mounting structure. In these drawings, an array speaker apparatus generally indicated by reference numeral 1 includes a plurality of speakers 4 attached in an array at a predetermined interval to a front panel 3 of a thin box vertical speaker cabinet 2. This is a speaker device that reproduces sound by controlling the speakers 4 independently. For this reason, the array speaker device 1 incorporates a plurality of A / D converters, D / A converters, delay circuits, amplifiers, etc. (not shown) corresponding to each speaker 4 and has high directivity. A speaker system is being built. As such a speaker system with high directivity, what is proposed by patent document 5, 6, 7 is known, for example.

International Publication No. 01/23104 Pamphlet Japanese Patent Application Laid-Open No. 07-203581 JP 2001-069591 A

  Here, FIG. 1 shows an example in which 14 speakers 4 are provided on the rear surface side of the front panel 3, but in reality, several hundred (200 to 300) speakers 4 are attached. Each speaker 4 is composed of the same full-range speaker, and has a pair of signal input terminals 7 and 7 projecting from the back of the yoke portion 6 as shown in FIG. Is fixed to the back surface of the front panel 3 by a plurality of set screws 9. Further, one end 10a of the compression coil spring 10 is connected to each signal input terminal 7 via a faston terminal 11, and the free end 10b (the other end) of the compression coil spring 10 is connected to the speaker cabinet 2. The speaker 4 is electrically connected to the electric circuit of the printed circuit board 12 by being pressed against the land 13 of the printed circuit board 12 arranged so as to be parallel to the front panel 3. The material of the compression coil spring 10 may be a metal material having conductivity and springiness. The lands 13 of the printed circuit board 12 are formed so as to correspond to the compression coil springs 10 for each speaker 4 in pairs. In addition, 14 is a grill net which covers the surface of the front panel 3, and 15 is a sound emission hole.

  When the speaker 4 is attached to the printed circuit board 12, the speaker 4 is fixed to the back surface of the front panel 3 with a set screw 9 in advance and a compression coil spring 10 is attached to each signal input terminal 7 via a faston terminal 11. Next, the front panel 3 to which the speaker 4 is attached is held horizontally with the front side facing up so that the compression coil spring 10 is directed vertically downward, and the printed circuit board 12 is placed below the front panel 3 with the land 13 up. So that the land 13 and the compression coil spring 10 coincide with each other. Then, the front panel 3 is lowered and the free end 10b of the compression coil spring 10 is pressed against the land 13, and the front panel 3 and the printed circuit board 12 are integrally coupled by a fixing means such as a set screw, or in advance. 12 is fixed in the speaker cabinet 2, and the front panel 3 is fixed to the front opening of the speaker cabinet 2.

  According to such an attachment structure of the speaker 4 to the printed circuit board 12, the lands 13 need only be formed on the printed circuit board 12 side corresponding to the compression coil springs 10. It is not necessary to provide a fixing means for fixing the printed circuit board 12, the structure of the printed circuit board 12 is simple and can be manufactured easily and inexpensively, and the compression coil spring 10 and the land 13 correspond to each other. If the printed circuit board 12 is positioned, the compression coil spring 10 can be reliably pressed against the land 13, no connection error occurs, and the reliability of terminal connection can be improved.

Further, since a lead wire with a connector is not required, it is not necessary to pay attention to the lead wire, and it can be assembled in a short time.
Further, since a commercially available speaker 4 having a pin-shaped signal input terminal 7 can be used as the speaker 4, it is not necessary to perform special processing or the like, and the compression coil spring 10 is easily attached via the faston terminal 11. be able to. However, it is also possible to connect by soldering instead of the faston terminal 11.
Further, since the compression coil spring 10 is compressed, the free end 10b comes into linear contact with the land 13 with a certain length, so that it is not necessary to form the land 13 with high positional accuracy.
Furthermore, since the compression coil spring 10 can use a commercially available spring, it is less expensive than a leaf spring terminal.

FIG. 3 is a sectional view showing another embodiment of the present invention.
In this embodiment, the first and second printed circuit boards 12A and 12B are arranged behind the speaker 4 so as to be parallel to the front panel 3, and the second printed circuit board 12B is disposed on the first printed circuit board 12A. As a relay board, the relay board 12B and the first printed board 12A are electrically connected by two pairs of connectors 15 and 15, each of which is provided on the speaker 4 on the lands 13 and 13 formed on the relay board 12B. The free ends of the pair of compression coil springs 10 and 10 are press-contacted. However, the connector 15 does not need to correspond to one speaker 4, and the signal lines of the plurality of speakers 4 can be concentrated on the connector 15 by the wiring of the relay board 12B. When the relay board 12B is used, the first printed board 12A does not have to be the same size as the relay board 12B, and may have an area corresponding to the electric circuit scale. The second printed circuit board 12B corresponds to the printed circuit board 12 in the above-described embodiment. Other configurations are the same as those of the above-described embodiment.

  In such a structure, when correcting the electric circuit of the first printed circuit board 12A, the first printed circuit board 12A is simply removed from the relay circuit board 12B, and the speaker 4 itself does not need to be removed. This is convenient for removing the substrate 12A.

FIG. 4 is a sectional view showing still another embodiment of the present invention.
In this embodiment, a plurality of speakers 4 are separately housed in small speaker boxes 20 and these speakers 4 are housed in one large speaker cabinet 2. A pair of compression coil springs 10, 10 provided in each speaker 4 protrude rearward of the speaker box 20 and are in pressure contact with the land 13 of the printed circuit board 12. The printed circuit board 12 is fixed to the inner surface of the speaker cabinet 2 by a plurality of set screws 21.

  In such a structure, since the independence of sound is ensured by housing each speaker 4 in the speaker box 20, the acoustic characteristics of the array speaker device can be further improved.

In addition, although all the above-described embodiments have been described as the speaker mounting structure in the array speaker device, the present invention is not limited to this, and a general speaker device such as a tallboy type or a bookshelf type may be used. The present invention can also be applied to a speaker mounting structure in a speaker device.
Further, the compression coil spring 10 may be fixed by soldering as necessary, as well as being pressed against the land 13.
Further, the printed circuit board 12 may be mounted not only on the speaker cabinet 2 side but also on the speaker box 20 side.
In FIG. 4, since a plurality of independent speaker boxes 20 are arranged adjacent to each other, each speaker box 20 is provided with two left and right side plates. May be integrated into one side plate, or the back plate of each speaker box may be integrated into one back plate.
Furthermore, in the above-described embodiment, an example in which all the speakers 4 are assembled to one printed board 12 and relay board 12B has been shown. However, the present invention is not limited to this example. In the case of a long speaker device, the speaker 4 may be assembled to a printed board (relay board) divided into two or three in the horizontal direction.

1 is an external perspective view showing an embodiment of an array speaker device according to the present invention. It is sectional drawing which shows the attachment structure of a speaker. It is sectional drawing which shows other embodiment of this invention. It is sectional drawing which shows other embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Array speaker apparatus, 2 ... Speaker cabinet, 3 ... Front panel, 4 ... Speaker, 7 ... Signal input terminal, 10 ... Compression coil spring, 11 ... Faston terminal, 12 ... Printed circuit board, 13 ... Land, 20 ... Speaker box .

Claims (2)

  A speaker is attached to the front panel, one end of a compression coil spring having electrical conductivity and spring property is connected to the signal input terminal of the speaker, and the other end of the compression coil spring is pressed against a land provided on the printed circuit board. The speaker mounting structure. In an array speaker device in which a plurality of speakers are attached to the front panel in an array,
An array speaker device, wherein one end of a compression coil spring having electrical conductivity and spring property is connected to a signal input terminal of each speaker, and the other end of the compression coil spring is pressed against a land provided on a printed circuit board.

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