JP4762927B2 - Electronic device, method for manufacturing electronic device, and portable terminal device - Google Patents

Description

The present invention relates to mounting a microphone of various devices including a microphone such as a mobile phone, and relates to an electronic device including a microphone of various miniaturized devices , a method for manufacturing the electronic device, and a mobile terminal device.

  In various devices including a microphone such as a cellular phone, a sound hole for guiding sound from the outside to a microphone installed in the housing is formed in the housing. In a miniaturized device such as a mobile phone, when the user grips the casing during a call, the sound hole is unintentionally blocked by hand, and there is a disadvantage that the level of the transmitted sound is lowered.

With respect to a device in which such a microphone is built in, Patent Document 1 discloses that an opening is provided in a side surface of the casing on the side of the mouthpiece in order to prevent the microphone hole from being blocked. It is disclosed that a sound path is provided between the microphone and the microphone. Further, in Patent Document 2, in order to reduce noise caused by a speaker's breath, a front air chamber is provided in front of the microphone unit, a sound hole that communicates with the microphone is provided in the front air chamber, and a sound that communicates outside the housing. A structure with holes is disclosed.
Japanese Patent Laid-Open No. 9-135286 (summary, FIG. 2) JP 2001-211089 A (summary)

  By the way, when the level of the transmitted voice is lowered, the user on the receiving side misunderstands that the voice level is reduced psychologically, and there is a disadvantage that the loud voice is raised. In order to prevent such a sound hole from being blocked, an opening and a sound path other than the sound hole are provided (Patent Document 1), and a sound chamber is secured by providing a front air chamber (Patent Document 2). However, these are complicated in structure and are not suitable for miniaturized devices.

  In mobile terminal devices such as mobile phones, hands-free calls are made, and it is required to prevent the sound from the receiver and speakers from entering the microphone. It is also requested to improve sound quality.

Patent Documents 1 and 2 do not disclose or suggest such problems or requests, and do not disclose or suggest a configuration for solving the problems or requests.

Accordingly, an object of the present invention relates to a mounting structure of a microphone mounted on a device, a method of manufacturing a device incorporating a microphone, or a mobile terminal device such as a mobile phone including a microphone, and prevents a decrease in sound reception level of the microphone. It is to improve the voice call function.

In order to achieve the above object, the present invention provides an electronic device including a microphone, wherein a sound receiving portion that allows sound to pass through the housing portion of the device is formed, and the sound receiving portion is closed at a surrounding portion of the sound receiving portion. A protective wall is fixed and a standing wall is provided to enclose the sound receiving part. A closed air chamber is formed by the protective film, the standing wall, the housing, and the substrate built in the housing. The sound is formed and guided to the microphone through the air chamber. Since the air chamber has such a structure provided in the housing portion, the sound receiving portion formed by a plurality of sound holes and the like can be installed in the width direction of the housing portion and can prevent the sound receiving portion from being blocked. In addition to improving the sound reception level of the microphone, the sound quality can be improved and the voice call function can be enhanced. Moreover, according to the method for manufacturing an electronic device of the present invention, the mounting structure can be realized.

In order to achieve the above object, a first aspect of the present invention, receiving the an electronic device comprising a Ma Ikurofon, a housing portion of the electronic device, is formed in the casing, passing sound and sound part is secured by adhesive to the winding portions of the sound receiving unit, and a protective film which closes the sound receiving unit is installed in the casing, and the substrate unit Ru provided with a sound conducting hole, the housing A projecting portion that surrounds the sound receiving portion and an annular body formed of a cushion material, encloses the sound receiving portion, and includes an inner surface portion of the housing portion and the substrate portion. It is sandwiched between and is closed by the standing wall portion that is installed in a compressed state while being held at the height of the protruding portion, and is closed by the housing portion, the protective film, the substrate portion, and the standing wall portion, and from the sound receiving portion. the microphones are of the sound and a air chamber leading to the microphone, over the sound conducting hole There is installed configuration. With this configuration, the above object can be achieved.

In order to achieve the above object, in the electronic device , preferably , the standing wall portion may be configured to be fixed to the housing portion or the substrate portion with an adhesive, and the sound receiving portion may be the housing. It may be arranged in the width direction of the body part and formed by a plurality of holes, or a single or a plurality of long holes, and the protective film blocks moisture from the sound receiving part and prevents the sound. it may be a configuration that Ru is passed. Such a configuration can also achieve the above object.

In order to achieve the above object, a second aspect of the present invention is a method of manufacturing an electronic device including a microphone, and a protective film is bonded to a surrounding portion of a sound receiving portion formed in a housing portion of the electronic device. fixed with wood, a step of closing the sound receiving portion, and the step of erecting projection surrounds the sound receiving portion to the housing unit, prior Ki受 clef the enclosure, the housing portion A step of installing a standing wall portion made of an annular body formed of a cushioning material that is sandwiched between an inner surface portion and a substrate portion having a sound guide hole and held in a compressed state at the height of the protrusion; and the vertical wall portion disposed on the body portion, the said substrate portion built in the casing, and the inner surface of the casing, sandwiching the said protective film, the sound from the sound receiving unit microphone forming a air chamber leading to, to installing the microphone over the sound conducting hole A configuration including a step. With this configuration, the above object can be achieved.

To achieve the above object, the manufacturing method of the electronic apparatus, preferably, may be configured to use a protective film for blocking the moisture and to pass through the sound. Such a configuration can also achieve the above object.

In order to achieve the above object, a third aspect of the present invention is a portable terminal device including a microphone mounted in a device, which is formed on the housing portion of the device and the housing portion, and generates sound. a sound receiving portion that passes, is secured by adhesive to the winding portions of the sound receiving unit, and a protective film which closes the sound receiving unit is installed in the casing, and the substrate unit Ru provided with a sound conducting hole, The housing portion is composed of a projecting portion that surrounds the sound receiving portion, and an annular body formed of a cushion material, encloses the sound receiving portion, and an inner surface portion of the housing portion and the substrate And is closed by the standing wall portion , which is sandwiched between and supported by the height of the protruding portion in the compressed state, and is closed by the housing portion, the protective film, the substrate portion, and the standing wall portion. the sound from the sound part and an air chamber leading to said microphone, said Ma covering the sound conducting hole Kurofon is installation configurations. With this configuration, the above object can be achieved.

  According to the present invention, the following effects can be obtained.

  (1) Since the air chamber closed by the housing portion, the substrate portion, and the standing wall portion is provided, a sound receiving portion including a plurality of sound holes or the like can be formed in the housing portion along the air chamber. The sound reception level can be prevented from being lowered, the sound quality can be improved, and the call function can be improved.

  (2) Since the sound receiving section can be formed widely, it is possible to avoid clogging with hands, to prevent a decrease in the sound receiving level of the microphone, and to improve the call function.

  (3) Also, according to the manufacturing method of the present invention, a microphone mounting structure that can achieve the above-described effects can be realized in the manufacturing process, and a reliable device such as a portable terminal device can be manufactured.

Other objects, features, and advantages of the present invention will become clearer with reference to the accompanying drawings and each embodiment.

[First Embodiment]

  FIG. 1 is a diagram showing an example of a portable terminal device according to the first embodiment of the present invention, FIG. 2 is a diagram showing a cut end surface of the II-II line (sound receiving hole portion) in FIG. 1, and FIG. FIG. 4 is an exploded perspective view of the microphone mounting portion, and FIG. 4 is a cross-sectional view showing the assembly of the microphone mounting portion.

  A mobile terminal device 2 according to this embodiment is an example of a microphone mounting structure, a device manufacturing method, and a mobile terminal device according to the present invention, and the housing 4 of the mobile terminal device 2 has a plurality of sound receiving holes. 6 is formed, and the front air chamber 8 is formed so as to surround these sound receiving holes 6, and the microphone 12 is mounted on the back side of the substrate unit 10 (FIG. 2) (outside the front air chamber 8). . Sound from the sound receiving hole 6 is guided to the microphone 12 through the front air chamber 8.

  The housing 4 is configured such that the fixed housing 14 and the movable housing 16 are connected by a hinge portion 18 so that the fixed housing 14 and the movable housing 16 can be opened and closed (foldable). The fixed-side housing 14 includes a front-side housing portion 20 and a back-side housing portion 22, which are formed bodies made of synthetic resin. The movable housing 16 has a built-in receiver 23 and a sound emitting hole 25 formed therein.

  The sound receiving hole 6 is a sound receiving portion that guides sound from the outside of the housing 4 into the front housing portion 20, and is arranged in a curved shape along the edge surface shape of the front housing portion 20. Yes. In this embodiment, it is formed in a range that is slightly narrower than the lateral installation width of the numeric keypad group 27 in the input operation unit installed in the front side housing unit 20.

  A plurality of support legs 24 that are in contact with the back-side casing 22 are formed inside the front-side casing 20, and fixed to the back-side casing 22 corresponding to the support legs 24. A step portion 26 is formed. A recessed portion 28 is formed in the back surface portion of the fixed step portion 26, and a fixing screw 30 penetrating the fixed step portion 26 from the recessed portion 28 is screwed into the support leg portion 24, whereby the front side housing portion 20 and the back side The housing portion 22 is integrally and firmly fixed. For example, a cap 32 made of an elastic material such as rubber is inserted into the recess 28 to conceal the fixing screw 30.

  The substrate unit 10 is installed in the space between the support leg portions 24 of the front-side housing unit 20, and the substrate unit 10 is supported by a plurality of support protrusions 34 of the back-side housing unit 22. The board unit 10 is configured by, for example, a printed circuit board, and various components 36 for configuring the mobile terminal device 2 are mounted in addition to the microphone 12. The component 36 is, for example, a connector. In this embodiment, the substrate unit 10 is supported by the back side housing unit 22 by applying the plurality of support protrusions 34 of the back side housing unit 22 to the component 36. Further, in this embodiment, the substrate portion 10 is supported by the component 36 by the support protrusion 34. However, by setting the support protrusion 34 high, the circuit board of the substrate portion 10 is directly supported. It is good also as composition to do.

  The microphone 12 is mounted on the back side of the substrate unit 10, that is, on the component part 36 side. A sound guide hole 38 for guiding sound to the microphone 12 is formed in the substrate portion 10, and the microphone 12 communicates with the front air chamber 8 through the sound guide hole 38.

  The front air chamber 8 is a resonance space formed by enclosing the sound receiving hole 6 between the inner surface portion of the front-side housing portion 20 and the substrate portion 10, and the front-side housing portion 20 and the substrate portion 10. It is a space part comprised by the standing wall part 40 installed in between, the front side housing | casing part 20, and the board | substrate part 10. FIG. The standing wall portion 40 is formed of a cushioning material having elasticity such as rubber, urethane, or foamed urethane, and is an annular body that surrounds and surrounds the plurality of sound receiving holes 6.

  A protective film 42 is installed between the standing wall 40 and the inner surface of the front case 20, and adhesives 44 and 46 are installed as fixing means. The protective film 42 is a sheet having a function of preventing only moisture from entering through the sound receiving hole 6 and allowing only sound to pass through. The protective film 42 is fixed to the front housing 20 by an adhesive 44, and the standing wall 40 is fixed on the protective film 42 by an adhesive 46. A plurality of protrusions 48 are formed on the inner surface of the front side housing portion 20 corresponding to the shape of the standing wall 40, and the standing wall 40 is positioned by these protrusions 48, and deformation in the lateral direction is prevented. It is illustrated.

  As shown in FIG. 3, the microphone mounting portion having such a configuration includes a substrate portion 10, a standing wall portion 40, and a protective film 42 that are laminated between the front-side housing portion 20 and the back-side housing portion 22. In addition to being installed, an adhesive 44 is installed between the protective film 42 and the front-side casing 20, and an adhesive 46 is installed between the standing wall 40 and the protective film 42. The protective film 42 and the standing wall 40 are fixed to the front housing 20 with adhesives 44 and 46, and the substrate 10 is overlaid on the standing wall 40. These are the front housing 20 and the back housing. The front case 20 and the rear case 22 are clamped with fixing screws 30 and fixed between them. With such a configuration, the standing wall portion 40 is maintained in a compressed state between the substrate portion 10 and the front-side housing portion 20, and the sealed front air chamber 8 is formed. In this case, the substrate portion 10 hits the protrusion 48, and the thickness of the front air chamber 8 is determined by the height of the protrusion 48.

  Therefore, as shown in FIG. 4, if the standing wall 40 is configured to protrude beyond the height of the protrusion 48, for example, by a height t, the standing wall 40 is compressed and held as shown in FIG. Therefore, the sealed front air chamber 8 can be realized.

  In this embodiment, the adhesives 44 and 46 are so-called double-sided adhesive sheets in which an adhesive is applied to the front and back surfaces of a synthetic resin sheet, and the adhesive material 44 is a sound receiving hole having the same shape as the standing wall 40. 6 is an annular sheet that surrounds and surrounds 6. The protective film 42 is a resin sheet that blocks moisture and allows air to pass therethrough, and the adhesive 46 is set in the same shape as the protective film 42. As shown in FIG. 6, the adhesive material 46 may be formed of an annular sheet similarly to the adhesive material 44.

  According to such a configuration, sound enters the front air chamber 8 from the sound receiving hole 6, and at this time, the front air chamber 8 functions as a resonance space, and the sound from the front air chamber 8 passes through the sound introduction hole 38 and is microphone 12. to go into. The microphone 12 converts the sound into an electric signal, and an electric signal having a level corresponding to the sound is obtained.

  When such a microphone mounting structure is provided, the following advantages and effects can be obtained.

  (1) Since the front air chamber 8 is installed inside the stationary side housing 14 of the housing 4, the degree of freedom of the position where the sound receiving hole 6 is formed and the place where the microphone 12 is installed is increased. Can be formed over a wide range in the width direction of the housing 4. That is, a plurality of sound receiving holes 6 can be arranged in a line, and when the stationary housing 14 is gripped, the sound receiving holes 6 are not blocked by a finger or the like. However, the sound can be sufficiently guided to the front air chamber 8, and a sufficient sound pressure level can be obtained in the microphone 12, and the call function of the mobile terminal device 2 can be enhanced.

  (2) Since the front air chamber 8 is provided between the fixed side housing 14 and the substrate portion 10 of the housing 4 or is formed in the formed space, the front air chamber has a sufficient volume and area. 8 can be formed, the degree of freedom of the position of the sound receiving hole 6 is increased, and the sound pressure level with respect to the microphone 12 can be improved.

  (3) Since the standing wall portion 40 is made of a cushion material, the standing wall portion 40 is held in a compressed state. Therefore, the restoring force of the standing wall portion 40 acts on the substrate portion 10 side, and a little on the substrate portion 10 side. Even if there are irregularities, high airtightness can be maintained in the front air chamber 8 without installing a sealing member such as an adhesive. Further, when performing a hands-free call, the front air chamber 8 is formed by the standing wall portion 40 formed of a cushion material, so that sound and vibration from the receiver 23 and a speaker (not shown) can be buffered, and howling. Can be suppressed.

  Next, an example of a method for manufacturing the mobile terminal device 2 will be described.

  This manufacturing method includes the following forming process, substrate part forming process, and assembling process.

  a) Molding process

  As shown in FIG. 3 and FIG. 4, the front-side housing unit 20, the back-side housing unit 22, the standing wall unit 40, the protective film 42, and the adhesive materials 44 and 46 of the fixed housing 14 are formed. If the adhesives 44 and 46 are made of a double-sided adhesive sheet, for example, they are processed into a predetermined shape by punching.

  b) Substrate part forming step

  The substrate 4 is molded into a board 10 that can be built in the housing 4, and the microphone 12 and the component 36 are mounted on the board 10.

  c) Assembly process

  Adhesive material 44 is installed on the surface portion surrounded by the protrusion 48 of the front-side casing 20, a protective film 42 is attached thereon, an adhesive material 46 is attached thereon, and the standing wall portion 40 is installed thereon. Stick. Through such a process, the substrate portion 10 is placed on the standing wall portion 40, the back side housing portion 22 is placed on the substrate portion 10 to cover it, and the fixing screw 30 is penetrated from the concave portion 28 of the back side housing portion 22. Then, the fixed-side housing 14 is assembled by screwing into the support leg portion 24 of the front-side housing portion 20.

  By such an assembling process, the front air chamber 8 is formed in the fixed housing 14 by the front housing 20, the substrate 10, the standing wall 40 and the protective film 42.

  In this embodiment, the standing wall 40, the protective film 42, and the adhesives 44 and 46 are configured as separate parts, but a pre-process is set for the assembly process c, and as shown in FIG. The plate-like standing wall body 50 in which the adhesive material 46 is bonded in advance to 40 is formed, and the plate-shaped protective film body 52 in which the adhesive material 44 is bonded in advance to the protective film 42 is formed. It is good also as a structure which reduces.

  In this case, since the standing wall body 50 is reinforced by the sheet-like adhesive 46 combined with the standing wall section 40 made of a cushion material and the soft standing wall section 40 is reinforced, the assembling performance can be improved. Can do. Similarly, with respect to the protective film body 52, the protective film 42 is reinforced with the adhesive 44, and the assemblability and the adhesiveness are improved.

  According to such a manufacturing method, the above-described microphone mounting structure can be easily realized.

[Second Embodiment]

  FIG. 8 is a diagram showing an example of a portable terminal device according to the second embodiment of the present invention, and FIG. 9 is a diagram showing an end surface taken along line IX-IX in FIG. 8 and 9, the same parts as those in FIGS. 1 and 2 are denoted by the same reference numerals.

  A mobile terminal device 2 according to this embodiment is an example of a microphone mounting structure, a device manufacturing method, and a mobile terminal device according to the present invention, and includes a case where a front air chamber 8 is formed adjacent to a fingerprint sensor. Show.

  In this embodiment, as shown in FIG. 8, a fingerprint sensor 54 is installed in the front case 20 of the fixed case 14, and a sound receiving hole which is a sound receiving part is adjacent to the fingerprint sensor 54. 6 is formed, and a front air chamber 8 is formed inside thereof.

  As shown in FIG. 9, the front air chamber 8 is formed by sandwiching a standing wall portion 40 between the front housing portion 20 and the substrate portion 10, avoiding the fingerprint sensor 54 disposed in the center portion. Yes. A microphone 12 is mounted on the back side of the substrate unit 10, and the microphone 12 and the front air chamber 8 are connected through a sound guide hole 38 formed in the substrate unit 10.

  The front air chamber 8 is formed so as to surround the plurality of sound receiving holes 6, and adhesive materials 44, 46 and a protective film 42 are interposed between the sound receiving holes 6 and the standing wall 40, The structure for preventing moisture from entering and selectively guiding only sound to the front air chamber 8 is the same as that of the above-described embodiment.

  Further, the standing wall portion 40 is made of a cushion material, and is sandwiched between the front side housing portion 20 and the substrate portion 10 and held in a compressed state.

  Since other configurations are the same as those of the first embodiment, the same reference numerals are given and description thereof is omitted. With such a configuration, the same effect as that of the first embodiment can be obtained.

[Other Embodiments]

  (1) In the above embodiment, the microphone 12 is mounted outside the front air chamber 8, that is, on the back side of the substrate unit 10. However, as shown in FIG. 10, the microphone 12 is mounted in the front air chamber 8. It is good. With such a configuration, it is not necessary to form the sound guide hole 38 in the substrate portion 10, and when the microphone 12 is installed on the upper surface side of the substrate portion 10, the front air chamber 8 is configured including the microphone 12. be able to.

  (2) In the above embodiment, a plurality of sound receiving holes 6 are arranged in a line to form a sound receiving hole array. For example, as shown in FIG. It is good also as a structure arrange | positioned at zigzag shape according to the breadth of this, for example, as shown in FIG. 12, you may comprise by slit 60, such as a single or several long hole.

  (3) In the above embodiment, the standing wall portion 40 is made of a cushioning material. However, the standing wall portion 40 is made of a rigid body, and the adhesive materials 44 and 46 are formed with a high thickness and a relatively large thickness, thereby compressibility. It is good also as a structure which makes the standing wall part 40 have.

  (4) In the above embodiment, the portable terminal device 2 is exemplified as a device on which a microphone is mounted. However, the present invention is not limited to a personal computer, a game device, a personal digital assistant (PDA), and a microphone. The present invention can be applied to various electronic devices and the like that are mounted, and is not limited to the embodiment.

Next, technical ideas extracted from the embodiments of the present invention described above are listed as appendices according to the description format of the claims. The technical idea according to the present invention can be grasped by various levels and variations from a superordinate concept to a subordinate concept, and the present invention is not limited to the following supplementary notes.

(Appendix 1) A microphone mounting structure mounted on a device,
A casing of the device;
A sound receiving portion that is formed in the housing portion and transmits sound;
A substrate unit installed in the housing unit;
Enclosing the sound receiving portion, and a standing wall portion installed between the inner surface portion of the housing portion and the substrate portion;
An air chamber that is closed by the casing, the substrate, and the standing wall and guides the sound from the sound receiving unit to the microphone;
A mounting structure of a microphone, comprising:

(Appendix 2) In the microphone mounting structure described in Appendix 1,
The microphone mounting structure, wherein the standing wall portion is formed of a cushion material.

(Appendix 3) In the microphone mounting structure described in Appendix 1,
The microphone mounting structure, wherein the standing wall portion is formed of an annular body that goes around the sound receiving portion.

(Appendix 4) In the microphone mounting structure described in Appendix 1,
The microphone mounting structure, wherein the housing part includes a positioning part for positioning the standing wall part.

(Appendix 5) In the microphone mounting structure described in Appendix 1,
The microphone mounting structure, wherein the standing wall portion is fixed to the housing portion or the substrate portion with an adhesive.

(Appendix 6) In the microphone mounting structure described in Appendix 1,
The microphone mounting structure, wherein the sound receiving portion is arranged in the width direction of the housing portion and is formed by a plurality of holes or a single or a plurality of long holes.

(Appendix 7) In the microphone mounting structure described in Appendix 1,
A microphone mounting structure, wherein a protective film that blocks moisture from the sound receiving unit and allows the sound to pass through is provided on the sound receiving unit.

(Appendix 8) In the microphone mounting structure described in Appendix 1,
The microphone mounting structure, wherein the microphone is installed outside the air chamber, and the sound is guided through a sound guide hole formed in the air chamber.

(Supplementary note 9) In the microphone mounting structure according to supplementary note 1,
The microphone mounting structure, wherein the microphone is installed inside the air chamber.

(Supplementary Note 10) In the microphone mounting structure according to Supplementary Note 1,
The microphone mounting structure, wherein the microphone is mounted on the substrate portion.

(Additional remark 11) It is a manufacturing method of the apparatus provided with a microphone,
Enclosing a sound receiving portion formed in the housing portion of the device, and installing a standing wall portion on the inner surface portion of the housing portion;
An air chamber that sandwiches the standing wall portion installed in the housing portion between a substrate portion built in the housing portion and an inner surface portion of the housing portion, and guides sound from the sound receiving portion to the microphone Forming a step;
A method for manufacturing a device, comprising:

(Additional remark 12) In the manufacturing method of the apparatus provided with the microphone of Additional remark 11,
A method for manufacturing a device, comprising a step of installing a protective film that blocks moisture and allows the sound to pass through the sound receiving portion.

(Additional remark 13) It is a portable terminal device provided with the microphone mounted in an apparatus,
A housing portion of the device;
A sound receiving portion that is formed in the housing portion and transmits sound;
A substrate unit installed in the housing unit;
Enclosing the sound receiving portion, and a standing wall portion installed between the inner surface portion of the housing portion and the substrate portion;
An air chamber that is closed by the casing, the substrate, and the standing wall and guides the sound from the sound receiving unit to the microphone;
A portable terminal device comprising:

(Supplementary note 14) In the mobile terminal device according to supplementary note 13,
The portable terminal device, wherein the standing wall portion is formed of a cushion material.

(Supplementary note 15) In the mobile terminal device according to supplementary note 13,
The standing wall portion is formed of an annular body that circulates around the sound receiving portion.

(Supplementary Note 16) In the mobile terminal device according to Supplementary Note 13,
The portable terminal device, wherein the casing unit includes a positioning unit that positions the standing wall unit.

(Supplementary note 17) In the mobile terminal device according to supplementary note 13,
The portable terminal device, wherein the standing wall portion is fixed to the casing portion or the substrate portion with an adhesive.

(Supplementary note 18) In the mobile terminal device according to supplementary note 13,
The sound receiving section is formed of a plurality of holes, or a single or a plurality of long holes.

(Supplementary note 19) In the mobile terminal device according to supplementary note 13,
A portable terminal device, wherein a protective film that blocks moisture from the sound receiving unit and allows the sound to pass is provided in the sound receiving unit.

(Supplementary note 20) In the mobile terminal device according to supplementary note 13,
The microphone is installed outside the air chamber, and the sound is guided from a sound guide hole formed in the air chamber.

(Supplementary note 21) In the mobile terminal device according to supplementary note 13,
The portable terminal device, wherein the microphone is installed inside the air chamber.

(Supplementary note 22) In the mobile terminal device according to supplementary note 13,
The portable terminal device, wherein the microphone is mounted on the substrate unit.

(Supplementary note 23) In the mobile terminal device according to supplementary note 13,
The portable terminal device, wherein the microphone is attached to the casing.

As described above, the most preferable embodiment and the like of the present invention have been described. However, the present invention is not limited to the above description, and is described in the claims or disclosed in the specification. It goes without saying that various modifications and changes can be made by those skilled in the art based on the above gist, and such modifications and changes are included in the scope of the present invention.

The present invention relates to a mounting structure of a microphone mounted on a device, a method of manufacturing a device incorporating a microphone, or a mobile terminal device such as a mobile phone equipped with a microphone, and prevents a decrease in sound reception level of the microphone and makes a voice call It can be applied to mobile terminal devices such as mobile phones, various information processing devices, etc., because it can enhance functions, and is useful because it improves the design of products.

It is a figure which shows an example of the portable terminal device which concerns on 1st Embodiment. It is a figure which shows the II-II line | wire cutting end surface of FIG. It is the perspective view which decomposed | disassembled and showed the microphone mounting part. It is sectional drawing which shows the assembly process of the microphone mounting part. It is sectional drawing which shows the front air chamber part of a portable terminal device. It is a perspective view which shows the modification of a microphone mounting part. It is a perspective view which shows an example of the manufacturing process of a portable terminal device. It is a figure which shows an example of the portable terminal device which concerns on 2nd Embodiment. It is a figure which shows the IX-IX line | wire end surface of FIG. It is sectional drawing which shows the portable terminal device which concerns on other embodiment. It is a figure which shows the portable terminal device which concerns on other embodiment. It is a figure which shows the portable terminal device which concerns on other embodiment.

Explanation of symbols

2 Mobile terminal device 4 Housing 6 Sound receiving hole 8 Front air chamber 10 Substrate 12 Microphone 14 Fixed housing 40 Standing wall 42 Protective film 44, 46 Adhesive

Claims (7)

An electronic device including the Ma Ikurofon,
A casing of the electronic device;
A sound receiving portion that is formed in the housing portion and transmits sound;
A protective film that is fixed to the circumferential portion of the sound receiving portion by an adhesive and closes the sound receiving portion;
Installed in the housing unit, and the substrate unit Ru provided with a sound conducting hole,
A projecting portion erected around the sound receiving portion on the housing portion;
It consists of an annular body made of a cushion material, surrounds the sound receiving part, is sandwiched between the inner surface part of the casing part and the board part, and is held in the compressed state while being held at the height of the protruding part A standing wall,
An air chamber that is closed by the housing portion, the protective film, the substrate portion, and the standing wall portion and guides the sound from the sound receiving portion to the microphone;
An electronic apparatus comprising the microphone and the microphone installed so as to cover the sound guide hole . The electronic device according to claim 1,
The electronic device according to claim 1, wherein the standing wall portion is fixed to the casing portion or the substrate portion with an adhesive. The electronic device according to claim 1,
The sound receiving unit is arranged in the width direction of the casing, a plurality of holes, or a single or a plurality of electronic devices, characterized in that formed in the elongated hole. The electronic device according to claim 1,
The protective film, electronic apparatus, wherein the benzalkonium water is passed through the cut-off was and the sound from the sound receiving unit. A method of manufacturing an electronic device including a microphone,
Fixing the protective film with an adhesive to the surrounding portion of the sound receiving portion formed in the housing portion of the electronic device, and closing the sound receiving portion;
Enclosing the sound receiving part in the housing part and standing a protrusion;
Before Ki受 clef the enclosure, the held by being in a compressed state sandwiched between the substrate portion having an inner surface portion and sound conducting hole of the casing to the height of the projection, an annular formed in the cushion material A process of installing a standing wall portion comprising a body ;
The vertical wall portion installed in the casing, and the casing the substrate unit incorporated in, the inner surface of the casing, sandwiching the said protective film, the sound from the sound receiving unit Forming an air chamber leading to the microphone;
Installing the microphone over the sound introduction hole;
The manufacturing method of the electronic device characterized by including. In the manufacturing method of an electronic device provided with the microphone according to claim 5 ,
Method of manufacturing an electronic device, which comprises using a cut off moisture and protective film for passing the sound. A mobile terminal device including a microphone mounted in the device,
A housing portion of the device;
A sound receiving portion that is formed in the housing portion and transmits sound;
A protective film that is fixed to the circumferential portion of the sound receiving portion by an adhesive and closes the sound receiving portion;
Installed in the housing unit, and the substrate unit Ru provided with a sound conducting hole,
A projecting portion erected around the sound receiving portion on the housing portion;
It consists of an annular body made of a cushion material, surrounds the sound receiving part, is sandwiched between the inner surface part of the casing part and the board part, and is held in the compressed state while being held at the height of the protruding part A standing wall,
An air chamber that is closed by the housing portion, the protective film, the substrate portion, and the standing wall portion and guides the sound from the sound receiving portion to the microphone;
A portable terminal device, wherein the microphone is installed so as to cover the sound guide hole .

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