JPH1141682A - Microphone mounting device and mounting method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a microphone mounting device by which the number of components is reduced and the number of assembling stages is decreased so as to attain automatic assembling with a small size at a low manufacturing cost. SOLUTION: The derive is provided with a microphone 1, a microphone holder 2 that supports the microphone 2 with insulation, an elastic conductive member 3 that has electric conductivity in a prescribed direction and is abutted on and conducted to the microphone 1 and integrally molded with the microphone holder 2, a rib 7 to which the microphone holder 2 supporting the microphone 1 is press-fit to fix the microphone holder 2 by a friction force caused by a deformed load equivalent to a press-fit margin of the microphone holder 2, and a printed circuit board 5 with microphone conductive land 4 abutted on and conducted to the elastic conductive member 3. Then the elastic conductive member 3 is abutted on and conducted to the microphone 1 and the microphone conductive land 4 through assembling to be in electric connection to the microphone 1 so as to attain automatic assembling.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a microphone mounting device and a mounting method for mounting a microphone (hereinafter abbreviated as a microphone) to a mobile communication device such as a mobile phone.

[0002]

2. Description of the Related Art Heretofore, in this type of microphone mounting apparatus and microphone mounting method, a structure for mounting a microphone and a structure for conducting electricity to a printed circuit board have been configured without being mutually related. One example is shown in FIG. FIG. 4 is a cross-sectional view showing a configuration of a microphone mounting device as a microphone mounting portion of a portable communication device as a conventional example.

[0003] In FIG. 4, reference numeral 11 denotes a microphone, 12 denotes a microphone 11 made of insulating holding rubber and mounted on an external housing 16.
, A microphone holder 13 for holding a microphone, 13 is a covered electric wire as a conductive member, 14 is a microphone connector recess provided on a printed circuit board 15 for connecting a signal from a microphone, 15 is a printed circuit board on which circuit wiring and components are mounted, Reference numeral 16 denotes an external housing that covers the main body of the portable communication device, reference numeral 17 denotes a rib provided on the external housing for fixing a microphone, and reference numeral 18 denotes a microphone connector recess 1 that is attached to one end of a covered electric wire 13.
4 is a microphone connector convex connected to 4, and 19 is a covered electric wire 13.
A soldering portion for soldering one end of the microphone 11 to the microphone 11.
6.

Next, a method of assembling the above-described conventional microphone mounting device will be described with reference to FIG. First, the microphone 11 is inserted into the microphone holder 12 and held. The microphone 1 is located between the microphone fixing ribs 17 provided on the exterior housing 16.
The microphone holder 12 into which the microphone 1 is mounted is press-fitted and attached.
At that time, the microphone holder 12 is fixed to the rib 17 by press-fitting the microphone holder 12 into the rib 17. Thereafter, the microphone connector protrusion 18 is connected to one end, and the other end of the covered electric wire 13 from which the other end is stripped is soldered to the microphone 11. The microphone connector protrusion 14 is attached to the microphone connector recess 14 mounted on the printed circuit board 15.
8 is connected, and the external housing 1 is placed on the printed circuit board 15.
6, the assembly of the portable communication device is completed.

[0005]

However, in the above-described conventional microphone mounting apparatus, the structure for mounting the microphone and the structure that is conductive to the printed circuit board are configured without being related to each other. In addition to using large parts such as microphone connector concave and microphone connector convex, the number of components such as microphone connector concave and microphone connector convex In addition to an increase in the number of assembling steps such as soldering of electric wires and connection of the concave connector for the microphone and the convex connector for the microphone, the mounting area occupied on the printed circuit board by these components increases. Thus, there has been a problem that the device becomes larger and the manufacturing cost increases.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems. It is an object of the present invention to reduce the number of components to be used and to reduce the number of assembling steps, thereby facilitating assembling with a small number of assembling steps. It is an object of the present invention to provide a microphone mounting device and a mounting method which are small in size and low in manufacturing cost.

[0007]

A microphone mounting device according to the present invention comprises a microphone, a microphone holder for insulatingly holding the microphone, and an anisotropic conductive rubber having conductivity in a predetermined direction. An elastic conductive member integrally formed with the microphone and abutting on the microphone to conduct, a rib for press-fitting the microphone holder holding the microphone and fixing the microphone holder by frictional force generated by a deformation load corresponding to a press-fitting allowance of the microphone holder; A printed circuit board provided with a microphone conductive land that is in contact with and conductive with the elastic conductive member, wherein the elastic conductive member is brought into contact with the microphone and the microphone conductive land to be electrically connected to the microphone by assembly. is there.

According to the present invention, not only the number of components to be used can be reduced and the number of assembling steps can be reduced, but also the mounting area for mounting the connector can be reduced to reduce the size of the portable communication device. A microphone mounting device that can be obtained.

In a microphone mounting method according to the present invention, a microphone holder is formed integrally with an elastic conductive member that abuts and conducts on the microphone, and the microphone is insulated and held by the microphone holder formed integrally with the elastic conductive member. A microphone holder with a built-in microphone is arranged on the conductive land for the microphone provided on the printed circuit board so that the elastic conductive member comes into contact with the microphone holder, and the microphone holder with the built-in microphone is pressed into a rib provided on the housing. The housings are stacked on a printed circuit board and fixed.

According to the present invention, not only the number of components to be used is reduced and the number of assembling steps is reduced, but also the mounting area for mounting a connector is reduced, so that the portable communication device can be downsized. A microphone mounting method that can be assembled by a built-up assembly method suitable for automatic assembly is obtained.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS According to the first aspect of the present invention, there is provided a microphone, a microphone holder for insulatingly holding the microphone, and an elastic member which is formed integrally with the microphone holder and which is in contact with the microphone to conduct electricity. A conductive member is provided, and the elastic conductive member is brought into contact with the microphone by assembly to conduct to the microphone, so that not only the number of constituent members used is reduced and the assembly process is reduced, but also the connector mounting is reduced. Therefore, the microphone mounting device which can reduce the mounting area for the mobile communication device and reduce the size of the portable communication device can be obtained.

According to a second aspect of the present invention, the microphone mounting device includes a rib for fixing the microphone, and when assembling the microphone mounting device, a microphone holder holding the microphone is pressed into the rib. The microphone holder is fixed to the rib by a frictional force generated by a deformation load corresponding to the press-fitting allowance of the microphone holder with respect to the rib, and an effect of obtaining a microphone mounting device that can reduce the size of the portable communication device is obtained. Have.

According to a third aspect of the present invention, there is provided a printed circuit board for receiving a signal from the microphone, the printed circuit board being provided with a conductive land for a microphone which is in contact with and conductive with the elastic conductive member. The conductive lands, the elastic conductive member, and the microphone are in contact with each other and are electrically connected to each other, so that a microphone mounting device that can reduce the size of the portable communication device and automate assembly can be obtained. It has the action of:

According to a fourth aspect of the present invention, the elastic conductive member is made of an anisotropic conductive rubber that conducts only in a certain direction, so that a portable communication device can be downsized. This has the effect of providing a microphone mounting device that can automate assembly.

According to a fifth aspect of the present invention, an elastic conductive member that contacts and conducts with a microphone and a microphone holder that insulates and holds the microphone are integrally formed, and are integrally formed with the elastic conductive member. The microphone holder in which the microphone is incorporated is pressed into a rib provided on the housing so that the microphone conductive land provided on the printed circuit board and the elastic conductive member come into contact with each other. Fixing the microphone holder, stacking and fixing the housing to the printed circuit board, and conducting the connection between the microphone and the microphone conductive land via the elastic conductive member by assembly. Not only can the number of components used be reduced and the number of assembling steps be reduced, but also the mounting area for mounting connectors can be reduced to reduce the size of the portable communication device. On it has the effect that the microphone mounting method is obtained an electrical connection can be automatically performed by the assembly of a portable communication device for a microphone.

According to a sixth aspect of the present invention, an elastic conductive member that contacts and conducts with the microphone and a microphone holder that insulates and holds the microphone are integrally formed, and are integrally formed with the elastic conductive member. The microphone holder with the built-in microphone is placed on the microphone conductive land provided on the printed circuit board so that the elastic conductive member is in contact with the microphone holder. On the other hand, the steps of stacking and fixing the housing on the printed circuit board so as to press-fit the microphone holder in which the microphone is incorporated are performed, and conduction between the microphone and the microphone conductive land is performed through the elastic conductive member by assembly. Is to be
Not only can the number of components used be reduced and the number of assembling steps can be reduced, but also the mounting area for mounting connectors can be reduced and the portable communication device can be downsized. It can be automatically performed by assembling the mobile communication device, and has a function of obtaining a microphone mounting method that can be easily assembled by the built-up assembling method.

(First Embodiment) Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings and FIGS. FIG. 1 is a cross-sectional view showing a configuration of a microphone mounting device which is a microphone mounting portion of the portable communication device according to the first embodiment of the present invention. FIG. 2 is an assembly of the microphone mounting device of the portable communication device shown in FIG. FIG. 3 is an exploded perspective view showing
FIG. 10 is an exploded perspective view showing another method of assembling the microphone attaching device of the portable communication device shown in FIG.

First, with reference to FIG. 1, the configuration of a microphone mounting device for a portable communication device according to a first embodiment of the present invention will be described. In FIG. 1, reference numeral 1 denotes a microphone for inputting sound, and reference numeral 2 denotes a microphone made of, for example, insulating rubber made of a material such as silicon rubber or an elastomer resin, and is formed by compression molding, injection molding, or the like, and the microphone 1 is mounted on an external housing 6. The microphone holder 3 to be held at the time is anisotropically embedded with a large number of metal wires as conductive rubber or conductive metal using a sheet metal part obtained by performing tempering treatment (heat treatment) on beryllium copper as a conductive spring material. It is an elastic conductive member which is elastically deformed by being brought into contact with the conductive rubber or the like so as to reliably conduct electricity.

Reference numeral 4 denotes a conductive land for a microphone as a conductive contact formed by plating gold, tin, silver, or the like on a printed board 5, and 5 denotes a signal from the microphone 1 on which circuit wiring and components are mounted. Printed circuit board to receive and process, 6 is A
An external housing (simply referred to as a housing) made of a resin molded product or the like made of a material such as BS or PC (polycarbonate) covers the main body of the portable communication device. There are ribs 8 for fixing the microphone 1, and microphone holes 8 provided on the external housing 6 for passing sound from the outside to the microphone 1. Since the microphone holder 2 and the elastic conductive member 3 are integrally formed at the time of molding, the number of assembling steps of the microphone mounting device is small and easy. Further, when the microphone 1 is incorporated into the microphone holder 2 integrally formed with the elastic conductive member 3, the microphone 1 is partially or entirely surrounded on all sides, so that integration with the microphone holder 2 can be maintained.

Next, with reference to FIG. 2, a method of assembling the microphone mounting device of the portable communication device according to the first embodiment of the present invention will be described. First, the microphone 1 is inserted and held in the microphone holder 2 integrally formed with the elastic conductive member 3. Next, the microphone holder 2 in which the microphone 1 is incorporated is press-fitted between the microphone fixing ribs 7 provided on the external housing 6 and attached. At that time, the microphone holder 2 with respect to the rib 7
, A frictional force is generated by the deformation load corresponding to the press-in allowance, and the microphone holder 2 is fixed to the rib 7 by the frictional force. Finally, the printed circuit board 5 is overlaid on the external housing 6 and fixed with an appropriate fixing tool such as a screw to complete the assembly of the portable communication device.

As is apparent from the above, in the microphone mounting apparatus according to the present embodiment, when assembling the portable communication device, the step of electrically connecting to the microphone 1 is performed by the elasticity of the microphone holder integrated type according to the present embodiment. Since the conductive member 3 is used, the microphone conductive land 4 on the printed circuit board 5 and the elastic conductive member 3 are automatically brought into contact with each other by simply overlapping the printed circuit board 5 and the outer casing 6. Therefore, no special connection step is required.

(Second Embodiment) Next, a method of assembling a microphone mounting apparatus according to a second embodiment of the present invention will be described with reference to FIG. Since all the components used in the present embodiment are the same as those shown in FIG. 1,
The description will not be repeated.

First, the microphone 1 is inserted and held in the microphone holder 2 integrally formed with the elastic conductive member 3. Next, the microphone holder 2 in which the microphone 1 is incorporated is arranged so that the elastic conductive member 3 comes into contact with the microphone conductive land 4 on the printed circuit board 5. From above, the outer casing upper part 6 is covered, and the microphone holder 2 in which the microphone 1 is incorporated is press-fitted between the microphone fixing ribs 7 formed thereon and mounted. At this time, a frictional force is generated by a deformation load corresponding to the press-fitting allowance of the microphone holder 2 to the rib 7, and the microphone holder 2 is fixed to the rib 7 by the frictional force. Finally,
The printed circuit board 5 and the upper casing 6 are fixed with a suitable fixing tool such as a screw to complete the assembly of the portable communication device.

In assembling the microphone mounting apparatus according to the present embodiment, as shown in FIG.
The microphone holder 2 in which the microphone 1 is incorporated is arranged on the upper conductive land 4 for the microphone so that the elastic conductive member 3 is in contact therewith, and the external housing 6 is stacked and assembled thereon, which is suitable for so-called automatic assembly. Since the portable communication device can be easily assembled by automatic assembling by a machine, since the portable communication device can be assembled by a built-up assembly method. Even when the portable communication device is assembled by the built-up assembly method, the elastic conductive member 3 automatically connects the microphone 1 and the microphone conductive land 4 on the printed circuit board 5 to establish conduction between them. Can be done automatically.

In the above-mentioned assembling, the cumulative dimensional error of the components caused by the overlapping of the components is absorbed by the elastic deformation of the elastic conductive member 3. In addition, although the microphone holder-integrated elastic conductive member 3 in the present embodiment has been described for the microphone 1, it can be applied to the attachment of any other electric components that are not mounted on a printed circuit board.

[0026]

The present invention is configured as described above, and in particular,
By using an elastic conductive member that does not require a connection process when assembling as a conductive connection member between the microphone and the conductive land for the microphone mounted on the printed circuit board, electrical components such as a microphone built into the upper side of the external housing In addition to reducing the number of assembly steps such as soldering wires and inserting connectors that were necessary to conduct electricity to the PCB, reducing the size of the large microphone conductive lands for soldering wires on printed circuit boards Thus, it is possible to provide a microphone mounting device capable of reducing the mounting area for mounting the connector and reducing the size of the portable communication device.

Further, the present invention is configured as described above, and in particular, the two components of the microphone holder for insulating and holding the microphone and the elastic conductive member are integrally formed to reduce the size of the components themselves. At the same time, it is possible to provide a microphone mounting device capable of reducing the number of components and reducing the size of the portable communication device.

Further, the present invention is constructed as described above, and in particular, can be assembled by a build-up assembly method suitable for automatic assembly using a machine, and can be used for a microphone and a microphone mounted on a printed circuit board. Since the conductive land and the elastic conductive member are configured to overlap and contact each other, and the dimensional error of the overlapping component can be absorbed, the portable communication device can be easily and inexpensively manufactured.

Further, the present invention is configured as described above. In the above description, particularly, the case where the elastic conductive member integrated with the microphone holder according to the present invention is applied to the microphone has been described. Since the present invention can be applied to the attachment of an electric component that is not mounted on a device, the device can be further miniaturized and manufactured easily.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating a configuration of a microphone attachment device that is a microphone attachment portion of a portable communication device according to a first embodiment of the present invention.

FIG. 2 is an exploded perspective view showing how to assemble the microphone mounting device of the portable communication device shown in FIG.

1. FIG. 3 is an exploded perspective view showing another method of assembling the microphone attaching device of the portable communication device shown in FIG.

FIG. 4 is a cross-sectional view showing a configuration of a microphone mounting device as a microphone mounting portion of a portable communication device as a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Microphone (microphone) 2 Microphone holder 3 Elastic conductive member 4 Microphone conduction land 5 Printed circuit board 6 On external housing 7 Rib 8 Hole 11 Microphone 12 Microphone holder 13 Coated wire 14 Microphone connector recess 15 Printed circuit board 16 External housing 17 Rib 18 Microphone connector convex 19 Soldering part 20 hole

Claims (6)

[Claims] A microphone, a microphone holder for insulatingly holding the microphone, and an elastic conductive member formed integrally with the microphone holder and in contact with and conductive to the microphone, wherein the elastic conductive member is attached to the microphone by assembly. A microphone mounting device characterized in that the microphone is brought into contact with the microphone to conduct electricity. 2. A microphone fixing device, comprising: a rib for fixing a microphone to the microphone mounting device. When assembling the microphone mounting device, a microphone holder holding the microphone is press-fitted into the rib, and an amount of press-fitting of the microphone holder into the rib is provided. The microphone mounting device according to claim 1, wherein the microphone holder is fixed to the rib by a frictional force generated by the deformation load of the microphone. 3. A printed circuit board for receiving a signal from the microphone, wherein the printed circuit board is provided with a conductive land for the microphone which is in contact with and conductive with the elastic conductive member, and the conductive land for the microphone, the elastic conductive member, and the microphone are assembled by assembly. 3. The microphone mounting device according to claim 1, wherein the microphone mounting device is in contact with and electrically connected thereto. 4. The elastic conductive member is made of an anisotropic conductive rubber that conducts only in a certain direction.
Or the microphone mounting device according to 3. 5. An elastic conductive member which abuts on and conducts with a microphone, and a microphone holder which insulates and holds the microphone are integrally formed, and the microphone is insulated and held by the microphone holder integrally formed with the elastic conductive member. Press-fitting a microphone holder in which the microphone is incorporated into a rib provided on a housing, and fixing the microphone holder so that the microphone conductive land provided on the printed circuit board and the elastic conductive member are in contact with each other, A method for mounting a microphone, comprising the steps of stacking and fixing a housing to a substrate, and conducting conduction between the microphone and the microphone conductive land via an elastic conductive member by assembly. 6. An elastic conductive member which abuts on and conducts with the microphone, and a microphone holder which insulates and holds the microphone are integrally formed, and the microphone is insulated and held by the microphone holder integrally formed with the elastic conductive member. A microphone holder with a built-in microphone is disposed on a conductive land for a microphone provided on a printed circuit board so that an elastic conductive member comes into contact with the microphone holder, and the microphone holder with the built-in microphone is mounted on a rib provided on a housing. A microphone, comprising: a step of stacking and fixing a housing on the printed circuit board so as to be press-fitted; and conducting a connection between the microphone and the microphone conductive land via an elastic conductive member by assembly. Mounting method.