JPH07302633A - Speaker connecting structure in communication machine - Google Patents

Abstract

PURPOSE:To facilitate connection with certainty and prevent the generation of contact deficiency due to vibration or the like by interposing rubber connectors in a press-contact state between a connection terminal disposed in a speaker and a contact for the speaker disposed in a printed circuit board. CONSTITUTION:Part of a light transmissible plate 6 is extended and a guides 6a are disposed at an interval corresponding to connection terminals 2a of a speaker 2. A holder 6b is formed on the guide 6a, which is thus interposed between the connection terminal 2a of the speaker 2 and a connection contact 1a for the speaker in a printed circuit board 1. Rubber connectors 3 are fitted into the holders 6b for positioning. When the connector 3 is fitted to the holder 6b, a metal fine wire of the connector 3 is brought into contact with the contact 1a mounted on the board 1. Subsequently, the board 1 having the connector 3 is screwed in a designated position in a main body case 10 with the speaker 2 previously fixed by a machine screw 13.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a speaker connecting structure incorporated in a communication device, and more particularly to a speaker connecting structure for connecting a speaker and a printed circuit board.

[0002]

2. Description of the Related Art In the field of communication devices, particularly portable wireless communication devices that are required to be small and lightweight, the speaker connection structure must be easy to assemble and reliable. As a conventional speaker connection structure in this field, as shown in FIG. 10, a speaker 21 fixed to a main body case and a printed circuit board 22 are connected by a lead wire 23, which is a typical one. The connection terminal 21a of the speaker 21 and the terminal portion 22 of the printed circuit board 22.
The structure is soldered to a.

As another conventional structure, as shown in FIG. 11, the printed circuit board 22 is fixed with a screw 24, and a coil spring 25 is interposed between the printed circuit board 22 and the speaker 21 to provide the lead wire. There is also a structure in which one end of the printed circuit board side is fixed by soldering and the speaker 21 and the printed circuit board 22 are connected by the coil spring 25.

[0004]

However, in the structure using the lead wire 23 as shown in FIG. 10, a space for laying out the lead wire 23 is required and a soldering work is required, which leads to a reduction in size and assembly. There is a difficulty in easiness and reduction of man-hours, and there is a case where an accident occurs such that the wire is caught between the parts during the assembly into the main body case or the like and broken.

On the other hand, as shown in FIG. 11, the coil spring 25
In the structure in which the interposition is provided, the soldering work is required as in the case shown in FIG. 10, and there is a possibility that contact failure may occur due to driving vibration of the speaker.

The object of the present invention is to solve the above-mentioned conventional drawbacks and not to require a particularly large space as a speaker connecting means, and to connect the printed circuit board and the speaker easily and surely. Another object of the present invention is to provide a speaker connection structure in a communication device that does not cause contact failure even when the speaker is driven and vibrated.

[0007]

In order to achieve the above-mentioned object, a speaker connection structure in a communication device of the present invention is provided between a connection terminal provided on a speaker and a speaker connection contact provided on a printed circuit board. The rubber connector is sandwiched in a pressure contact state, and the printed circuit board and the speaker are connected by the rubber connector.

In this case, since a liquid crystal display unit is often arranged in the communication device, a part of the light guide plate for liquid crystal illumination is connected to the connection terminal provided on the speaker and the speaker provided on the printed circuit board. The rubber connector is positioned by extending it to the contact point, forming a holding portion in a part of the light guide plate, and fitting and arranging the rubber connector in the holding portion.

As another example of the structure for holding the rubber connector in position, a holding member having a holding portion is separately attached to the printed circuit board and the rubber connector is fitted and arranged in the holding member, or the printed circuit board has a two-layer structure. In this case, a holding portion may be formed on one printed circuit board layer and the rubber connector may be fitted and arranged in the holding portion.

As the rubber connector, there are conventionally known ones in which a metal fine wire is incorporated in silicon rubber having elasticity, and a rubber connector having silver particles as a conducting portion. By making the rubber connector have a square cross section or a columnar shape, it becomes a structure that does not require direction designation when it is fitted to the holding portion of the light guide plate.

[0011]

The rubber connector is sandwiched between the connection terminal provided on the speaker and the contact for the speaker provided on the printed circuit board in a pressure contact state. As a result, the speaker and the printed circuit board are satisfactorily connected, and even if the speaker is driven and vibrated, the speaker and the printed circuit board are securely connected without causing a contact failure.

The rubber connector is positioned and held by an appropriate means, and when the liquid crystal display section is arranged, a part of the light guide plate for illuminating the liquid crystal is extended between the speaker and the printed circuit board, and a part of the light guide plate is extended. The rubber connector may be fitted and arranged on the holding portion formed on the printed circuit board, or the holding member having the holding portion may be separately attached to the printed circuit board and the rubber connector may be fitted and arranged on the holding member. In the case of a two-layer structure, a holding portion may be formed on one printed circuit board layer and a rubber connector may be fitted and arranged in the holding portion. If the rubber connector is held in this way, the rubber connector can be positioned reliably, and contact failure due to displacement or the like can be prevented more reliably.

In this case, if the rubber connector has a square cross section or a cylindrical shape, it is not necessary to consider the directionality when inserting it into the holding portion, and the workability of assembling can be further improved.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a speaker connection structure in a communication device of the present invention will be described with reference to FIGS. 1 is a cross-sectional view of a main part showing an example implemented in a portable wireless communication device, FIG. 2 is an exploded perspective view of the main part, and FIG. 3 is a front view showing a positional relationship between a speaker and a liquid crystal display part. A part of the case is cut away. FIG. 4 is a perspective view of the rubber connector, and FIG.
Is a perspective view showing a positional relationship between a printed circuit board, a light guide plate for liquid crystal illumination and a rubber connector, FIG. 6 is an enlarged perspective view showing a holding portion formed in a part of the light guide plate, and FIG. 7 is a part of the light guide plate. 7A and 7B show another example of the shape of the holding portion and the rubber connector formed in FIG. 5, FIG. 9A is a perspective view showing another example of the shape of the holding portion, and FIG. FIG. 8, FIG. 8 and FIG. 9 are perspective views showing other structural examples of the holding means of the rubber connector.

In the figure, 10 is a main body case of a communication device, 1 is a printed circuit board, 2 is a speaker, and for a connection terminal 2a provided on the back side of the speaker 2 and a speaker provided on the printed circuit board 1. The connection contact 1a has a corresponding shape, and a thin metal wire 3 is provided between the connection terminal 2a of the speaker 2 and the speaker connection contact 1a of the printed circuit board 1.
The rubber connector 3 incorporating a is clamped in a crimped state,
The printed circuit board 1 and the speaker 2 are connected by the rubber connector 3.

The rubber connector 3 used in the embodiment is a conventionally known one in which a thin metal wire 3a for conduction is arranged in one row in a silicon rubber 3b at a pitch of 0.05 mm. In the embodiment, a square cross section is used. Is molded into.

A display window 11 is formed in the main body case 10, and the liquid crystal display section 4 is arranged so as to correspond to the display window 11. Reference numeral 5 is an LCD (liquid crystal plate), 6 is a light guide plate for liquid crystal illumination, and an LED (light emitting source) is incorporated therein. Reference numeral 7 denotes a TAB, and the liquid crystal display unit 4 is fixed to the printed board 1. In the embodiment of FIGS. 1 to 7, a part of the light guide plate 6 is extended to connect the connection terminal 2 of the speaker 2.
A guide portion 6a is provided at an interval corresponding to a and 2a, and a square holding portion 6b is formed on the guide portion 6a. The guide portion 6a is connected to the connection terminal 2 of the speaker 2.
a and the speaker connecting contact 1a of the printed circuit board 1, and the rubber connector 3 is fitted and positioned on the holding portion 6b. In this case, by designing the rubber connector 3 to have a square cross section, it is not necessary to specify the direction when the rubber connector 3 is fitted into the holding portion 6b. Further, the rib 6c is provided on the inner side wall of the holding portion 6b, so that the rubber connector 3 is strongly fitted and does not fall off.

When the rubber connector 3 is inserted into the holding portion 6b as described above, the metal thin wire 3 of the rubber connector 3 is inserted.
a contacts the speaker connection contact 1a on the printed circuit board 1. Next, the main body case 1 to which the speaker 2 is fixed in advance
The printed circuit board 1 on which the rubber connector 3 is attached to 0 is screwed to a designated position with a screw 13. In this case, the height H of the rubber connector 3 is determined by the speaker 2
Is set to be somewhat larger than the distance L between the connection terminal 2a of FIG. 2 and the speaker connection contact 1a of the printed circuit board 1, so that an appropriate compressive load is applied to the rubber connector 3 by the completion of screw tightening, and the speaker 2 is driven and vibrated. However, it maintains a good conduction state. In the figure, 12 is a sound output hole of the speaker 2.

When the liquid crystal display unit 4 is arranged as described above, a part of the light guide plate 6 for illuminating the liquid crystal is extended between the speaker 2 and the printed circuit board 1 and formed on a part of the light guide plate 6. If the rubber connector 3 is fitted and arranged in the held portion 6a, the rubber connector 3 can be positioned reliably, and contact failure due to displacement or the like can be more reliably prevented.

In this case, the holding portion 6b is formed by making the shape of the rubber connector 3 square or cylindrical.
It is not necessary to consider the directionality of insertion into the insert, and the workability of assembling can be further improved.

In the above-described embodiment, the guide portion 6a is provided in a part of the light guide plate 6 and the rubber connector 3 is held by the guide portion 6a. However, as the positioning holding means for the rubber connector 3, any suitable means can be adopted. For example, as shown in FIG. 8, a holding member 8 having a holding portion 8a is separately attached to the printed board 1 and held by the holding member 8, or as shown in FIG. And 2A
Of course, in the case of the two-layer structure, the holding portion 9 may be formed on one of the printed board layers 1B and held by the holding portion 9.

Further, the shape of the holding portion 6b is not limited to a quadrangle, but may be a shape in which a part of a square is cut out as shown in FIG.
7B, even if it is formed into a cylindrical shape as shown in FIG. 7B, it is not necessary to specify the direction when fitting to the holding portion.

[0023]

According to the speaker connection structure of the communication device according to the present invention, the rubber connector is sandwiched between the connection terminal provided on the speaker and the speaker connection contact provided on the printed circuit board in a crimped state. Since the printed circuit board and the speaker are connected by the rubber connector, the lead wire is not necessary, the space factor for the arrangement is improved, and the work of soldering the lead wire and the coil spring is not necessary. The number of steps in the process can be reduced, and there is no fear of disconnection of lead wires during assembly. Further, since no coil spring or the like is used, contact failure does not occur due to driving vibration of the speaker, etc., and reliable connection is possible. Further, the rubber connector itself has a low component cost, and the cost does not particularly increase.

[Brief description of drawings]

FIG. 1 is a sectional view of essential parts showing an example in which a speaker connection structure in a communication device according to the present invention is applied to a portable wireless communication device.

FIG. 2 is an exploded perspective view of a main part.

FIG. 3 is a front view showing a positional relationship between a speaker and a liquid crystal display unit.

FIG. 4 is a perspective view of a rubber connector.

FIG. 5 is a perspective view showing a positional relationship between a printed circuit board, a light guide plate for liquid crystal illumination, and a rubber connector.

FIG. 6 is an enlarged perspective view showing a holding portion formed on a part of a light guide plate.

FIG. 7 shows another example of the shape of the holding portion and the rubber connector formed on a part of the light guide plate, (A) is a perspective view showing another example of the shape of the holding portion, and (B) is a rubber connector. The perspective view which shows the example which made into a column shape.

FIG. 8 is a perspective view showing an example in which a rubber connector is separately held by a holding member.

FIG. 9 is a perspective view showing a holding means of a rubber connector when a printed circuit board has a two-layer structure.

FIG. 10 is a perspective view showing a conventional speaker connection structure.

FIG. 11 is a perspective view showing another example of a conventional speaker connection structure.

[Explanation of sign]

 1 Printed Circuit Board 1a Speaker Connection Contact 2 Speaker 2a Connection Terminal 3 Rubber Connector 3a Metal Wire 4 Liquid Crystal Display 5 LCD 6 Light Guide 6a Guide 6b Holding

Claims (5)

[Claims] 1. A rubber connector is sandwiched between a connection terminal provided on a speaker and a speaker connection contact provided on a printed circuit board in a crimped state to connect the printed circuit board and the speaker with the rubber connector. A speaker connection structure in a communication device, which is configured. 2. A part of a light guide plate for illuminating the liquid crystal display section extends between a connection terminal provided on the speaker and a connection contact to the speaker provided on the printed circuit board, and a part of the light guide plate. 2. The speaker connection structure for a communication device according to claim 1, wherein the rubber connector is positioned by fitting and arranging the rubber connector in the holding portion formed in the. 3. The holding member having a holding portion is separately attached to the printed circuit board, and the rubber connector is positioned by fitting and arranging the rubber connector on the holding member. Speaker connection structure in communication equipment. 4. The printed circuit board has a two-layer structure, a holding portion is formed on one printed circuit board layer, and the rubber connector is positioned by fitting and arranging the rubber connector on the holding portion. The speaker connection structure in the communication device according to claim 1. 5. The rubber connector has a square or columnar cross section, and has a structure that does not require direction designation when fitting to the holding portion.
Speaker connection structure in the communication device described in 3 and 4.