JPH1188990A - Connector integrating microphone holder, its manufacture, condenser microphone with connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate the microphone to a device main body case and to attain sure connection between an electrode of the microphone and an electrode of a mounted board by configuring a positioning microphone holder having a recessed part to contain the microphone therein and a connector contributing to electric connection with an integrated elastic resin. SOLUTION: In the integrated connector 1, various types of connectors 2 are integrated with a microphone holder 3. Metallic thin wires 4 are imbeded in the connector 2. The integrated connector 1 of this type has a directivity of sound pickup of the microphone and mounted on a portable communication equipment to suppress pickup of external sound noise. In the manufacture, a microphone holder forming and a connector forming made of an elastic resin are integrated by a prescribed means. Thus, the microphone is directly positioned and fixed to the connector 2 to simplify the assembling of the microphone to the device main body case and to reduce the cost.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connector for connecting a microphone electrode of a condenser microphone (hereinafter simply referred to as "microphone") used in a mobile communication device such as a portable telephone or a radio to an electrode of a mounting board. The present invention relates to a method of manufacturing the microphone and a microphone with a connector.

[0002]

2. Description of the Related Art Conventionally, microphones used for the above-mentioned applications are:
As shown in FIG. 11, a lead terminal b led from a microphone a and an electrode e of a mounting board d mounted on a device body case c.
Are connected by soldering f. Further, a microphone holder (hereinafter, simply referred to as a microphone holder) g is attached to the device main body case c.
The microphone a is mounted and held.

In order to connect the electrode of the microphone a to the electrode e of the mounting board d, first, the electrode of the microphone a is connected to the lead terminal b.
Is required, and a soldering step is required to connect the lead terminal b of the microphone a to the electrode e of the mounting board d. These steps are complicated and hinder miniaturization of equipment.

[0004]

SUMMARY OF THE INVENTION The present invention provides a connector which can be easily mounted on an apparatus main body case and which can reliably connect an electrode of a microphone to an electrode of a mounting board, a method of manufacturing the same, and a microphone with a connector. Is to do.

[0005]

SUMMARY OF THE INVENTION A microphone holder integrated connector (hereinafter simply referred to as an integrated connector) according to the present invention comprises:
It is made of an elastic resin in which a microphone holder for positioning and fixing having a concave portion for accommodating a microphone and a connector contributing to electrical connection are made of an elastic resin, and a position facing an electrode of a mounting board of a device body case. Provided with a microphone housing, and the outer shape can be detachably fitted to the housing. Further, a flange portion for mounting on the device body case may be provided on the leg portion of the microphone holder. Further, in the integrated connector of the present invention, the microphone is housed in the concave portion of the microphone holder, and the microphone and the connector are adhered to each other via an adhesive layer, so that the microphone can be integrated with the microphone holder and the connector.

In a method of manufacturing an integrated connector according to the present invention, an elastic resin is molded in a mold to form a microphone holder molded body having a recess for accommodating a microphone, and a plurality of thin metal wires are formed in the elastic resin. A connector is formed by bonding a support material to a side portion of an elastic resin body which is embedded in parallel at a predetermined pitch to form a connector molded body, and at least one of the microphone holder molded body and the connector molded body is in an unvulcanized state. It has a step of vulcanizing after being set in a mold and integrated by hot pressing. Further, the microphone holder molded body and the connector molded body can be integrated by hot pressing via a connecting member made of an unvulcanized elastic resin. Further, a microphone can be housed in the recess of the integrated connector of the present invention to provide a microphone with a connector.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS First, an integrated connector according to the present invention will be described in detail with reference to FIGS. 1 to 3 each show an integrated connector 1 of the present invention, in which a connector 2 and a microphone holder 3 having different aspects are integrally formed. In each drawing, the upper part is a plan view, and the lower part is a sectional view. FIG. 1 (a),
In the integrated connector 1 shown in (b) and (c), various types of connectors 2 are integrated with the microphone holder 3. A thin metal wire 4 is embedded in the connector 2. In the embodiment shown in FIG. 2, an opening 5 is provided on the side of the microphone holder 3. The integrated connector 1 of this type has directivity in sound collection of a microphone, and can be mounted on a portable communication device to suppress sound pickup of external noise.

In the embodiment shown in FIG. 3, a flange 7 having a mounting hole 6 is provided on the leg of the microphone holder 3. In the integrated connector 1 of this type, the positioning and fixing of the microphone can be performed more reliably by merely providing a projection that fits into the mounting hole 6 on the device body case. Therefore,
A special mounting recess for attaching the integrated connector 1 to the device main body case is not required, and the structure of the device main body case becomes simpler. Thus, the integrated connector of the present invention can be implemented in various modes.

FIG. 4 shows the connector 2 and the microphone holder 3 before they are integrated. FIG. 4A is a cross-sectional view of the microphone holder 3, and the microphone holder 3 is formed of an elastic material 8 made of an elastic resin. Have been. FIG. 4B shows a plan view and a cross-sectional view of the connector 2 having a rectangular outer shape. The thin metal wires 4 are buried in parallel with a predetermined pitch in an elastic material 8 similar to the microphone holder 3. The elastic material 8 used for the connector 2 and the microphone holder 3 is a material whose elasticity is maintained under an environmental atmosphere of −25 to 90 ° C., has a compression set of 20% or less, and a hardness of 20 to 80. ° H. For this reason, silicone rubber, fluorine rubber, urethane rubber, or the like is used, and silicone rubber is particularly preferable. Further, it is more preferable that the amount of ions contained in the elastic material 8 is small.

The fine metal wires 4 have an interval L of 5 to 1000 μm,
The elastic member 8 is embedded in the elastic member 8 so that its tip protrudes from the surface of the connector 2 by 5 to 50 μm perpendicularly or at an angle of ± 15 ° to the connection surface. The material of the thin metal wire 4 is beryllium copper, brass, stainless steel, nickel, or the like.
Among them, those with strong spring properties are selected. The wire diameter of the thin metal wire 4 is 5 to 100 μm, and its surface is preferably subjected to gold plating on a nickel base from the viewpoints of reduced contact resistance, corrosion resistance and oxidation resistance. FIG. 4C is a plan view and a cross-sectional view of the connector 2 having a shape different from that of FIG. 4B, and has an outer shape of a disk. FIG. 5 is a plan view showing another embodiment of the connector 2 used for integration.
(B) and (c) have different shapes and arrangement patterns of the fine metal wires 4.

FIG. 6 is a schematic sectional view showing the connection between the terminal electrode 10 of the microphone 9 and the electrode 12 of the mounting board 11 using the integrated connector 1 of the present invention. Are mounted on the device body case 13, respectively. The microphone 9 can be easily mounted simply by fitting the microphone 9 into the concave portion of the integrated connector 1 and mounting the microphone 9 at a predetermined position of the device main body case 13. At this time, since the integrated connector 1 is formed of the elastic material 8 such as silicone rubber, a compressive force is applied to the integrated connector 1 by the device body cases 13 and 13 so that the terminal electrode 10 of the microphone 9 and the mounting substrate In addition to securely connecting the eleventh electrode 12 and the electrode 12, it also absorbs vibration and shock applied to the device body case 13. The microphone 9 is more securely fixed to the integrated connector 1 by providing an adhesive layer on the surface of the connector portion of the integrated connector 1 which is in contact with the microphone 9.

By using the integrated connector of the present invention having such a configuration, a microphone can be directly connected to the connector.
It can be positioned and fixed, simplifying the work of assembling the microphone into the device body case, which contributes to cost reduction. Further, the accuracy of the microphone mounting position is improved, and the product yield is improved.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A method of manufacturing an integrated connector according to the present invention will be described below in detail with reference to FIGS. Note that the present invention is not limited to the examples illustrated below. FIG. 7 is a process diagram showing an outline of a manufacturing process of a compression type connector used for the integrated connector of the present invention. 1. Connector manufacturing process: (Process a) Silicone rubber compound KE-153U 100
Parts by weight, vulcanizing agent / C-19A 0.5 parts by weight, vulcanizing agent / C-19B 2.
5 parts by weight, silane coupling agent / KBM-403 1.0 parts by weight (all manufactured by Shin-Etsu Chemical Co., Ltd.) are kneaded with a mixing roll, and then mixed with a 300 mm wide, 0.1 mm thick PE.
The film was applied to a thickness of 0.1 mm on a T film 16 by a calender roll 17. This is cut with a cutting blade 18 to a width of 300 mm and a length of 300 mm.
A 600 mm sheet 19 was formed.

(Step b) A beryllium copper wire 20 having a diameter of 20 μm and a nickel plating of 0.25 μm and a gold plating of 0.15 μm on the surface of the sheet 19 is coated with a 0.1 mm pitch in the width direction of the sheet. , And another sheet 19 was adhered on the applied surfaces thereof to sandwich the beryllium copper wire 20. This was cut into half lengths of 300 mm, pressurized and deaerated in a pressure box for 10 minutes, and then
The composition was cured by heating with a hot press for 2 minutes.

(Step c) After peeling off the PET film 16 from the heat-cured sheet while holding the beryllium copper wire 20, one of the peeled surfaces is coated with insulating liquid silicone rubber / KE.
-1800TA 50 parts by weight and insulating liquid silicone rubber KE-180
0TB 50 parts by weight (both manufactured by Shin-Etsu Chemical Co., Ltd., trade name) was mixed with an addition-reaction type silicone adhesive 21 to a thickness of 20 μm by screen printing, and another sheet from which the PET film 16 was peeled off was applied. The sheet 22 was formed by bonding the beryllium copper wires 20 so as to be parallel to each other, degassing in a vacuum box for 2 minutes, and heat-setting with a hot press at 120 ° C. for 2 minutes.

(Step d) Silicone rubber compound
50 parts by weight of KE-1940-50-A and 50 parts by weight of silicone rubber compound KE-1940-50-B (all manufactured by Shin-Etsu Chemical Co., Ltd.
Then, a semi-lunar support member 23 made of silicone rubber having a rubber hardness of 50 ° H, an outer radius of curvature of 2.15 mm, a height of 2.0 mm, and a length of 300 mm was molded using a mold.

(Step e) The sheet 22 is cut at a width of 4.25 mm in a direction crossing the arranged beryllium copper wire pitch, and then one side thereof is coated with a silicone adhesive 21 to a thickness of 20 μm by screen printing. Support material 23 was attached. further,
A silicone adhesive 21 was applied to the other surface, and a support material 23 was attached. After vacuum deaeration of this in a vacuum box for 2 minutes, it is heated and cured by a hot press at 120 ° C. for 2 minutes.
A molded body 24 was produced.

(Step f) The molded body 24 is heated at 215 in a heating oven.
After the secondary vulcanization at ℃ -2 hours, it was cut in the length direction of the beryllium copper wire 20 to a thickness of 1.1 mm, and the exposed end face of the beryllium copper wire 20 was nickel-plated underlayer 0.25 μm, surface gold plating 0.
A 1 μm barrel plating process was performed to produce a connector molded body 25.

2. Microphone holder manufacturing process: (See Fig. 8) 100 parts by weight of silicone rubber compound, KE-9410U, 2.0 parts by weight of vulcanizing agent, C-8 (all manufactured by Shin-Etsu Chemical Co., Ltd., trade name) kneaded with mixing roll 15 After that, it is divided into 2.5 mm thickness and cut with a cutting blade 18 to have a width of 120 mm and a length of 250 mm
The sheet 26 was formed. The sheet 26 was set in a microphone holder molding die 27, and hot pressed at 180 ° C. for 5 minutes to mold the microphone holder portion. The molding burr was removed by a deburring jig 28, and the microphone holder molding 29 was connected. The formed microphone holder sheet 30 was formed.

3. Connecting member production process: (See Fig. 9) Silicone rubber compound SH-851U 100 parts by weight (made by Dow Corning Toray Silicone, trade name), vulcanizing agent
0.5 parts by weight of C-19A and 2.5 parts by weight of vulcanizing agent / C-19B (see above)
Is kneaded with a mixing roll, and then a 75 μm thick PET
300mm width, 0.1m with calender roll 17 on film 16
m and cured in a hot air tunnel drying oven (HAV) 31 at an ambient temperature of 150 ° C.
Wound to 32.

Next, the silicone rubber compound KE-1
51KU 75 parts by weight and silicone rubber compound KE-76V
25 parts by weight of BS, 0.15 parts by weight of vulcanizing agent / C-1 and 3.0 parts by weight of C-3M, 1.0 part by weight of color BB, and 3.5 parts by weight of SO paste (all manufactured by Shin-Etsu Chemical Co., Ltd.) The film 33 is coated on the film 33 by a calender roll 17 to a thickness of 0.5 mm to form a coat layer, wound up on a roll 35, and cut by a cutting blade 18 to obtain a width of 120 mm and a length of 120 mm.
A 250 mm sheet 36 was formed. Jig for removing this sheet 36
It was set in 37, punched out in a ring shape from the coat layer side, and removed unnecessary portions to obtain a connection member sheet 38 having a large number of connection members 34. At this time, the inner hole of the ring has been removed together with the PET film 16.

4. Integrating process: (see FIG. 10) The microphone holder sheet 30 is set in the lower mold 40 of the mold for integral molding, the positioning middle plate 39 is put thereon, and the connecting member sheet 38 is further connected to the connecting member sheet 38 from above. The connector molded body 25 is set with the side facing down, and the connector
Is set, the upper mold 41 is covered, and the connection member 34 is foamed and hardened by heating at 150 ° C. for 5 minutes by a hot press, whereby the microphone holder molded body 29 and the connector molded body 25 are integrated to form an integrally molded sheet 42. Was made. Then, after integrally vulcanizing the integrally molded sheet 42 in a heating oven at 215 ° C. for 2 hours, the periphery of the microphone holder molded body 29 is cut off with a deburring jig 43,
An integrated connector 44 was manufactured.

The integration of the microphone holder molded body 29 and the connector molded body 25 does not necessarily have to be performed via the connecting member 34. When the connecting member 34 is not used, the microphone holder molded body 29 and the connector molded body At least one of the support members 23 of the body 25 may be unvulcanized, and may be integrated by hot pressing.

[0024]

The integrated connector according to the present invention can be easily mounted simply by fitting a microphone into the concave portion and mounting the microphone at a predetermined position on the device body case. Since it is made of an elastic material such as rubber, a compressive force is applied to the integrated connector by the device body case, and the terminal electrodes of the integrated connector and the electrodes of the mounting board are securely connected to each other. Also absorbs vibrations and shocks. Further, the one provided with the adhesive layer on the surface of the connector part of the integrated connector which is in contact with the microphone can more reliably fix the microphone to the integrated connector. By using the integrated connector of the present invention, the microphone can be directly positioned and fixed to the connector, and the work of assembling the microphone into the device body case is simplified, which contributes to cost reduction. Further, the accuracy of the microphone mounting position is improved, and the product yield is improved.

[Brief description of the drawings]

FIG. 1 shows an integrated connector of the present invention, wherein (a)
(B), (c) is the top view and sectional drawing which show the integrated connector of a different aspect, respectively.

FIG. 2 is a plan view and a sectional view showing another embodiment of the integrated connector of the present invention.

FIG. 3 is a plan view and a sectional view showing another embodiment of the integrated connector of the present invention.

4A and 4B are diagrams illustrating a configuration of an integrated connector according to the present invention. FIG. 4A is a cross-sectional view illustrating a microphone holder.
(B), (c) is the top view and sectional drawing which show a connector, respectively.

FIG. 5 is a plan view showing another embodiment of the connector used in the present invention.

FIG. 6 is a schematic sectional view showing a connection between a microphone and a mounting board using the integrated connector of the present invention.

FIG. 7 is a process diagram showing an outline of a manufacturing process of a compression type connector used for the integrated connector of the present invention.

FIG. 8 is a process diagram showing an outline of a process of manufacturing a microphone holder used for the integrated connector of the present invention.

FIG. 9 is a process diagram showing an outline of a manufacturing process of a connecting member sheet used for the integrated connector of the present invention.

FIG. 10 is a process diagram schematically showing a manufacturing process for integrating the microphone holder and the compression type connector.

FIG. 11 is a schematic sectional view showing a conventional connection between a connector and a mounting board.

[Explanation of symbols]

 1, 44 ································································ Metal Fine wire 5 Opening 6 Mounting hole 7 Flange 8 Elastic material 9 Microphone 10 Terminal electrode 11 Mounting substrate 12・ ・ Electrode 13 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Main unit case 15 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Mixing roll, 16 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ PET film 17 ・ ・ ・ ・ ・ ・・ ・ ・ ・ ・ Calendar roll 18 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Cutting blade 19,22,26,36 ・ ・ ・ Sheet 20 ・ ・ ・ ・ ・ ・ ・ ・ ・ Beryllium copper wire 21 ・ ・ ・ ・... Silicone adhesive 23 Support material 24・ ・ ・ ・ ・ ・ ・ ・ ・ Molded body 25 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Connector molded body 27 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Mic holder molding die 28 ・ ・ ・ ・ ・ ・ ・ ・ ・・ ・ Deburring jig 29 ・ ・ ・ ・ ・ ・ ・ ・ ・ Mic holder molding 30 ・ ・ ・ ・ ・ ・ ・ ・ ・ Mic holder sheet 31 ・ ・ ・ ・ ・ ・ ・ ・ ・ Hot air tunnel type drying Furnace 32, 35 Roll 33 Film 34 Connecting member 37 Tool 38 Connection member sheet 39 Middle plate 40 for positioning Lower mold 41 ······ Upper mold 42 ················································· Mike b ·····・ Lead terminal c ・ ・ ・ ・ ・ ・ Device body case d ・ ・ ・ ・ ・ ・ Mounting base e · · · · · · electrode f · · · · · · soldering g · · · · · · microphone holder

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI // B29K 105: 22 105: 24 B29L 9:00 31:34

Claims (6)

[Claims] A microphone holder-integrated connector comprising an elastic resin in which a positioning and fixing microphone holder having a concave portion for accommodating a condenser microphone and a connector contributing to electrical connection are integrated. . 2. The microphone holder-integrated connector according to claim 1, wherein the microphone holder has a flange portion on a leg portion for mounting to a device body case. 3. The microphone holder integrated connector according to claim 1, wherein a condenser microphone is housed in a concave portion of the microphone holder, and the condenser microphone and the connector are adhered to each other via an adhesive layer. 4. An elastic resin is molded in a mold to form a microphone holder molded body having a concave portion for accommodating a condenser microphone, and a plurality of fine metal wires are arranged in the elastic resin in parallel at a predetermined pitch. A connector is formed by bonding a support material to the side of the embedded elastic resin body, and the microphone holder and the connector are formed.
A method for manufacturing a microphone holder integrated connector, comprising a step of setting in a mold, hot pressing, and integrating at least one of them in an unvulcanized state, followed by vulcanization. 5. The method for manufacturing a microphone holder integrated connector according to claim 4, wherein the microphone holder molded body and the connector molded body are integrated by hot pressing via a connecting member made of an unvulcanized elastic resin. . 6. A condenser microphone with a connector, wherein the condenser microphone is housed in a recess of the microphone holder integrated connector according to claim 1.