JP5283569B2 - Earpiece structure, cellular phone, and waterproof performance test method and apparatus for telephone apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce a man-hour required for preparation for testing waterproof performance and simplify a structure of a portable telephone or the like. <P>SOLUTION: A structure of an ear piece in a speech unit includes: a panel frame 511 disposed in a front case 51; an ear speaker 66 directly or indirectly pressed by a rear case toward the panel frame on the rear face side of the panel frame; a display panel 61 including an ear hole 611 disposed at a position facing an acoustic window 514 wherein the peripheral edge of the display panel is stuck by a waterproof double-sided tape on the front face side of the panel frame; and a gas-permeable sheet 63 stuck to the display panel so that an inside of a casing is made to be a fluid-tight state relative to the ear hole at a position where the ear hole on the rear face side of the display panel 61 is disposed. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a structure of an earpiece, a mobile phone, and a waterproof performance test method and apparatus thereof in a call device.

  In recent years, mobile phones have been required to have waterproof properties as their functions diversify. For mobile phones having waterproof properties, it is necessary to conduct waterproof performance tests at the development stage or product inspection.

  Conventionally, regarding a waterproof performance test method, it has been proposed to determine whether the waterproof performance is good or not by immersing the test object in depressurized water based on the presence or absence of bubbles generated from the test object (Patent Document 1). ).

  Also, as a method for testing the waterproof performance of electronic devices, it has been proposed to measure the difficulty of passing air at that time by allowing air to flow inside through a waterproof film attached to the sound transmission hole of a waterproof speaker. (Patent Document 2).

  Conventionally, a special structure for sending air into the mobile phone is provided for the waterproof performance test of the mobile phone.

  FIG. 8 is a front view of a conventional mobile phone 1j, FIG. 9 is a cross-sectional view showing a structure for a waterproof performance test, and FIG. 10 is a cross-sectional view showing a structure for attaching a receiving speaker.

  8 and 9, the mobile phone 1j includes a receiver-side (movable side) casing KTG and a transmitter-side (fixed side) SG casing KTS. A screw concealment panel 82 is pasted below the display panel 81 on the surface of the housing KTJ on the receiver side. On the back side of the screw concealment panel 82, a test packing 84 is provided so as to close the test hole 83 provided in the housing KTJ.

  When performing the waterproof performance test, the screw concealment panel 82 is peeled off, and a syringe needle (not shown) is pierced and penetrated through the test packing 84, and from the air pressure source to the inside NB of the housing KTJ through the tube and the syringe needle. Inject pressurized gas. In this state, the cellular phone 1j is immersed in a liquid, and the presence or absence of gas leakage from the housing KTJ is detected.

  Further, in the conventional cellular phone 1j, as shown in FIG. 10, the receiving speaker 85 is arranged on the back side of the display panel 81 via a packing 86 provided with a waterproof sheet 86a, and is provided with a substrate, a rib or the like. The member BZ is pressed against the display panel 81.

JP-A-3-200039 JP2009-44344

  As described above, in the case of the cellular phone 1j having the structure shown in FIGS. 8 and 9, in order to perform the waterproof performance test, the screw concealment panel 82 is peeled off as a preparation, and the test packing 84 is provided with a syringe. Needed to penetrate the needle. For this reason, the preparation takes time, and the number of parts such as the test packing 84 increases, resulting in a disadvantage that the structure of the mobile phone 1j is complicated.

  Further, in the mounting structure of the receiving speaker shown in FIG. 10, since the receiving speaker 85 is pressed against the display panel 81 through the packing 86, it always faces outward from the display panel 81. It will be in the state where the power of was added. Therefore, the double-sided tape 812 that attaches the display panel 81 to the housing KTJ is likely to float or peel off.

  In the attachment structure of the reception speaker shown in FIG. 10, the reception speaker 85 and the packing 86 are in close contact with the double-sided tape 87, and the space in front of the reception speaker 85 is the housing KTJ. There is no communication with the inside. Therefore, the reception hole 811 cannot be used for air injection in the waterproof performance test.

  The present invention has been made in view of the above-described problems, and it is an object of the present invention to reduce the number of steps for preparing a waterproof performance test and simplify the structure of a communication device such as a mobile phone.

In the structure of the earpiece in the communication device in which the housing is formed by the front case and the rear case, the device of the present embodiment has a panel frame portion provided on the front case and a back surface side of the panel frame portion. A receiving speaker arranged via a receiving pad so as to face an acoustic window provided in the panel frame portion, and pressed directly or indirectly toward the panel frame portion by the rear case. A display panel in which a receiving hole is provided at a position facing the acoustic window, and a peripheral edge of the display panel is attached to the front side of the panel frame by a waterproof double-sided tape; A gas permeable sheet attached to the display panel so that the interior of the housing is in a liquid-tight state with respect to the receiving hole at the position where the receiving hole is provided. And bets, the possess, said receiving pad has a mesh having obtained breathable provided is formed in a frame shape to the pad portion and the opening portion having an opening, said receiving a spin - in the front side of the mosquito Air can flow through the mesh between the space and the space on the peripheral surface side or the back surface side of the receiving speaker.

  According to the present invention, the number of steps for preparing a waterproof performance test can be reduced, and the structure of a communication device such as a mobile phone can be simplified.

It is the front view and left view which show the external appearance of the mobile telephone of this embodiment. It is the disassembled perspective view seen from the front case side of the receiver side of the mobile phone. FIG. 4 is a perspective view showing the receiver side partly disassembled from the front case side. It is a perspective view which partially decomposes | disassembles the receiver side and shows from a rear case side. It is sectional drawing which shows the attachment structure of the speaker for receiving calls. It is sectional drawing which shows the state which attached the test device for a waterproof performance test. It is a flowchart which shows the procedure of a waterproof performance test. It is a front view of the conventional mobile phone. It is sectional drawing which shows the conventional structure for a waterproof performance test. It is sectional drawing which shows the attachment structure of the conventional speaker for receiving calls.

  FIG. 1A shows a front view of the mobile phone 1 of the present embodiment, and FIG. 1B shows a left side view of the mobile phone 1.

  1 to 4, the cellular phone 1 according to the present embodiment is a folding type in which a transmitter side (fixed side) SG and a receiver side (movable side) JG are rotatably connected by a hinge HJ. is there. The case KTS of the transmitter side SG includes a front case 11 having an operation unit SB provided on the front surface, and a rear case 12 disposed in contact with the back side of the front case 11. The front case 11 and the rear case 12 are manufactured by molding a synthetic resin such as polycarbonate or ABS resin. Similarly, the front case 51 and the rear case 52 of the receiver-side JG are manufactured by resin molding.

  Various operation buttons 20 for inputting a telephone number and other information are arranged on the operation unit SB so as to protrude from a hole provided in the front case 11 to the surface (front surface). By pressing, a contact or a sensor provided on the printed circuit board, which will be described later, is configured to detect it.

  In addition, a battery housing portion RD is provided inside the rear case 12, and the surface thereof is a detachable battery lid 24. The front case 11 and the rear case 12 are integrated by screws inserted from the rear case 12 and screwed.

  The housing KTJ of the receiver side JG includes a front case 51 and a rear case 52 arranged in contact with the back side of the front case 51. The front case 51 and the rear case 52 are coupled via a sealing material SZ made of synthetic rubber or synthetic resin, and the sealing material SZ provides waterproofness to the coupling portion of the housing KTJ. Various shapes, materials, hardness, mounting positions, mounting methods, and the like of the sealing material SZ can be employed.

  A plate-like display panel (front panel) 61 made of a transparent synthetic resin such as polycarbonate or acrylic is provided on the surface of the front case 51. The display panel 61 has functions such as protecting the main display DM, improving the visibility of images, and decorating the mobile phone 1. The user views the image displayed on the main display DM through the display panel 61.

  At the upper position of the display panel 61, there is provided an earpiece JU for transmitting the sound emitted from the receiving speaker 66 provided inside to the outside. The earpiece JU will be described in detail later.

  As shown in FIG. 2, the housing KTJ of the receiver side JG has a display panel 61, a panel seal 62, a gas permeable sheet (receiving sheet) 63, an operation sheet 71, a one-touch flexible module 72, a one-touch tape. 73, main display DM, printed circuit board PK1, receiver speaker 66, camera 67, sub display DS, sub LCD packing BJ12, rear panel tape BJ14, and back sheet SH.

  The front case 51 and the rear case 52 are integrated by four screws NJ, NJ... Inserted from the front case 51 side and screwed.

  The main display DM and the sub display DS are both displays composed of a color LCD.

  Various signals are transmitted and received by a flexible cable between the printed circuit board PK1 on the transmitter side SG and the printed circuit board (not shown) on the receiver side JG. The flexible cable is arranged in a state of being bent through the internal space of the hinge HJ.

  Next, the structure of the earpiece JU will be described.

  As shown in FIGS. 3 to 5, in the earpiece JU, the display panel 61 is provided with an earpiece hole 611. The reception hole 611 is a horizontally long slit-like hole that penetrates the display panel 61. A gas permeable sheet 63 is attached to the back surface of the display panel 61 so that the interior of the housing KTJ is in a liquid-tight state with respect to the reception hole 611 at a position where the reception hole 611 is provided.

  The gas permeable sheet 63 includes a mesh 631 that allows gas to permeate but does not allow liquid to permeate, and an edge 632 formed to surround the periphery of the mesh 631 with synthetic resin or synthetic rubber.

  As the mesh 631, for example, ePTFE (Expanded Polytetrafluoroethylene) that is stretched porous is used.

  Double-sided tape is affixed to the edge 632 over the entire circumference. The double-sided tape affixed to the edge portion 632 adheres to the back surface of the display panel 61, so that the gas permeable sheet 63 covers the reception hole 611 from the inside.

  Since the gas permeable sheet 63 allows gas to pass therethrough, the sound from the receiving speaker 66 can be directly conducted to the outside through the receiving hole 611, thereby sufficiently ensuring an acoustic function. Further, since the gas permeable sheet 63 does not allow liquid to pass through, even when water or the like enters from the receiving hole 611, further intrusion is prevented by the gas permeable sheet 63, thereby waterproofing the inside of the housing KTJ. Is secured.

  The front case 51 is provided with a panel frame portion 511 for attaching the display panel 61. The panel frame portion 511 has an opening 51a having substantially the same shape as the shape along the periphery of the main display DM, and is wide in the vicinity of the earpiece JU.

  A display panel 61 is attached to the panel frame 511 in close contact with the surface of the panel frame 511 by a panel seal 62 made of double-sided tape or the like. Thereby, the waterproof property between the front case 51 and the display panel 61 is ensured.

  The panel frame portion 511 has a recess 512 on the front side and a recess 513 on the back side. That is, the concave portions 512 and 513 are part of the panel frame portion 511.

  As well shown in FIG. 5, due to the presence of the recess 512, a gap is provided between the gas permeable sheet 63 and the panel frame portion 511, and they are not in contact with each other. As a result, an unexpected force does not act on the display panel 61 from the back side thereof, and therefore, the panel seal 62 to which the display panel 61 is attached does not float or peel off as in the conventional case.

  If the panel frame portion 511 does not push the gas permeable sheet 63 strongly, that is, if they do not interfere with each other, the panel frame portion 511 and the gas permeable sheet 63 may slightly contact each other. Also good.

  The panel frame portion 511 is provided with an acoustic window 514 for guiding the sound emitted from the reception speaker 66 to the reception hole 611. In this example, the acoustic window 514 has an oval shape that is long in the lateral direction, but may have various shapes or dimensions such as a rectangle, an ellipse, and a plurality of round holes.

  The reception speaker (receiver unit) 66 is disposed in the recess 513 of the panel frame portion 511 so as to be in contact with the surface of the panel frame portion 511 via the reception pad 64. The receiving speaker 66 is arranged on the back side of the panel frame portion 511 so as to face the acoustic window 514 provided in the panel frame portion 511, and directly or indirectly by the rear case 52. It is pressed toward the part 511.

  That is, the receiving speaker 66 is pressed from the back side by the boss portion 521 provided on the inner surface of the rear case 52, and is thereby pressed against the surface of the panel frame portion 511 via the receiving pad 64, and dropped. It is attached so as not to.

  The shape and dimensions of the boss portion 521 are set so as to bend the receiving pad 64 by an appropriate dimension by pushing the receiving speaker 66. The shape of the boss portion 521 can be various shapes such as a rib shape or a bridge shape. Further, the receiving speaker 66 may not be pushed by the boss portion 521 but may be pushed by an elastic member such as a spring, packing, or a substrate, or may be pushed through them.

  An electric wire 661 having a connector at the tip is connected to the receiving speaker 66, and a voice signal, a ring tone, or the like received from the other party at the time of a call by an audio signal supplied through the electric wire 661. Is output as audio.

  The reception pad 64 includes a pad portion 641 formed in a frame shape from synthetic resin or synthetic rubber and having an opening, and a mesh 642 provided in the opening of the pad portion 641. The mesh 642 itself has air permeability. Since the reception pad 64 is in contact with the surface of the recess 513 via the mesh 642, the space RM1 around the mesh 642 on the front side of the reception speaker 66 and the peripheral surface side of the reception speaker 66 or Between the space RM2 on the back surface side, air can be circulated through the mesh 642.

  In the present embodiment, the reception pad 64 is attached to the surface of the reception speaker 66 with a double-sided tape. No double-sided tape is provided between the receiving pad 64 and the panel frame 511, but a double-sided tape can also be provided here.

  Further, it is possible to omit the mesh 642 in the reception pad 64. In that case, in order to provide air permeability between the space RM1 and the space RM2, an appropriate hole, recess, or gap may be provided in the pad portion 641 or the panel frame portion 511.

  The cellular phone 1 according to the embodiment described above has a waterproof property as a whole. Next, a waterproof performance test of the mobile phone 1 will be described.

  FIG. 6 shows a state where the waterproof performance testing device BS is attached to the mobile phone 1.

  In FIG. 6, the waterproof performance test apparatus (test jig) BS is formed in an annular shape so as to surround the receiving portion 611 and the holding portion 111 that elastically sandwiches the casing KTJ of the mobile phone 1 with a spring or the like. A packing 112 disposed between the panel 61 and hermetically sealed, an air hole 113 opened in a space surrounded by the packing 112, a tube 114 for supplying air to the air hole 113, a compressed air pressure source (not shown), and the like. ing. As the packing 112, silicon rubber, urethane rubber, or the like can be used.

  Compressed air, which is a pressurized gas, is supplied from the tube 114 to the earpiece hole 611 through the air hole 113. Then, the compressed air enters from the reception hole 611, passes through the gas permeable sheet 63, enters the space RM1, and further enters the space RM2 through the mesh 642 of the reception pad 64. In this way, the compressed air flows into the housing KTJ.

  In this state, the mobile phone 1 is immersed in a liquid, and the presence or absence of gas leakage from the housing KTJ is detected. As the liquid for immersing the mobile phone 1, a liquid having low viscosity and surface tension, inert and insulating properties is preferable. As such a liquid, water or a fluorine-based inert liquid such as Fluorinert (registered trademark) manufactured by 3M Co., Ltd. can be used.

  As a method for detecting the presence or absence of gas leakage, there are a method for observing or collecting bubbles generated in a liquid, a method for measuring a change in pressure of a supplied gas, and the like. For measuring the change in pressure, a pressure sensor or a pressure gauge can be used. By observing the position where the bubbles are generated, it is possible to identify the waterproof defective portion. A gas other than air may be used as the gas.

  In the flowchart shown in FIG. 7, the waterproof performance test apparatus BS is attached to the mobile phone 1 (# 11). Compressed air is supplied to the receiving hole 611 (# 12). The mobile phone 1 is immersed in a liquid (# 13). If there is a gas leak from the mobile phone 1 (Yes in # 14), the position of the leak and its cause are examined (# 15). If there is no gas leakage, the test is terminated as a non-defective product.

  Note that the waterproof performance test for the housing KTS of the transmitter side SG can be performed in the same procedure as the waterproof performance test of the receiver side JG described above. In that case, in order to inject air, instead of the reception hole 611, for example, a transmission hole for a microphone provided in the transmission hole can be used.

  Thus, by using the waterproof performance test apparatus BS, it is not necessary to provide special parts such as a conventional test packing, and it is possible to reduce the number of man-hours without taking time for test preparation. The waterproof performance test can be easily performed quickly and at low cost. Since the structure of the mobile phone 1 can be simplified, a reduction in product cost can be expected.

  Further, the cellular phone 1 has a structure capable of supplying compressed air from the earpiece hole 611 to the inside of the casing KTJ. Moreover, even if water enters from the earpiece hole 611, the inside of the casing KTJ has a structure. It does not enter and is waterproof.

  Furthermore, the receiving speaker 66 is pressed against the panel frame portion 511, and the force applied to the receiving speaker 66 does not act on the display panel 61. Therefore, the panel seal 62 to which the display panel 61 is attached is not unexpectedly lifted or peeled off.

  In the embodiment described above, the reception hole 611 has a horizontally long slit shape, but may have various shapes such as an oval shape and a shape in which a plurality of circular small holes are arranged.

  In the embodiment described above, the shapes of the front case 51 and the rear case 52 may be various shapes other than those described above. For example, the front case 51 and the rear case 52 may be flat or box-shaped. These front-view shapes may be rectangular, egg-shaped, elliptical, oval, polygonal, or other various shapes. The front case 51 or the rear case 52 may be composed of a plurality of cases or parts. A structure in which another member is interposed between the front case 51 and the rear case 52 may be employed.

  In the embodiment described above, the front case 51, the rear case 52, the panel frame portion 511, the display panel 61, the panel seal 62, the gas permeable sheet 63, the receiving pad 64, the receiving speaker 66, and the receiving port JU. The configuration, structure, shape, dimensions, molding method, manufacturing method, arrangement, number, material, position, etc. of the mobile phone 1 or the waterproof performance testing apparatus BS may be variously changed in addition to those described above. Can do.

  In the example described above, the foldable mobile phone 1 has been described. However, the present invention is also applied to a non-foldable mobile phone, various mobile terminals other than the mobile phone, a fixed phone, and other telephone devices. be able to.

1 Mobile phone (calling device)
51 Front Case 52 Rear Case 511 Panel Frame 514 Sound Window 61 Display Panel 611 Earpiece Hole 62 Panel Seal (Double-Sided Tape)
63 Gas-permeable sheet 64 Reception pad 66 Speaker JU Earpiece SZ Sealing material BS Waterproof performance testing device 111 Grasping part 112 Packing 113 Air hole (supply hole)
114 tubes

Claims (6)

In the structure of the earpiece in the communication device in which the casing is formed by the front case and the rear case,
A panel frame provided in the front case;
On the back side of the panel frame portion, it is arranged via a receiving pad so as to face an acoustic window provided in the panel frame portion, and directly or indirectly toward the panel frame portion by the rear case. And the speaker for receiving pressure pressed
A display panel in which a receiving hole is provided at a position facing the acoustic window, and a peripheral portion thereof is attached to the front side of the panel frame portion by a waterproof double-sided tape;
A gas permeable sheet attached to the display panel so that the interior of the housing is in a liquid-tight state with respect to the receiving hole at the position where the receiving hole is provided on the back side of the display panel; I have a,
The receiving pad includes a pad portion formed in a frame shape and having an opening, and a breathable mesh provided in the opening, and a space on the front side of the receiving speaker and the receiving speaker. Between the space on the peripheral surface side or the back side of the mosquito, air can be circulated through the mesh.
The structure of the earpiece in the communication device. The gas permeable sheet is affixed to the display panel in a state not in contact with the panel frame portion,
The structure of the earpiece in the communication device according to claim 1. The front case and the rear case are coupled via a seal material, and the communication device as a whole is waterproof.
The structure of the earpiece in the communication device according to claim 1 or 2. In a mobile phone in which a casing is formed by a front case and a rear case,
A panel frame provided in the front case;
On the back side of the panel frame portion, it is arranged via a receiving pad so as to face an acoustic window provided in the panel frame portion, and directly or indirectly toward the panel frame portion by the rear case. And the speaker for receiving pressure pressed
A display panel in which a receiving hole is provided at a position facing the acoustic window, and a peripheral portion thereof is attached to the front side of the panel frame portion by a waterproof double-sided tape;
A gas permeable sheet attached to the display panel so that the receiving hole is in a liquid-tight state with respect to the outside at a position where the receiving hole is provided on the back side of the display panel;
The receiving pad includes a pad portion formed in a frame shape and having an opening, and a breathable mesh provided in the opening, and a space on the front side of the receiving speaker and the receiving speaker. Between the space on the side of the mosquito or the back side, air can be circulated through the mesh,
The front case and the rear case are coupled via a sealing material, and the mobile phone has a waterproof property as a whole.
Mobile phone. In the waterproof performance test method of the mobile phone according to claim 4,
A pressurized gas is injected from the earpiece hole, the injected gas is allowed to pass through the gas permeable sheet and flow into the mobile phone, and the mobile phone is immersed in a liquid so that the gas from the housing Detect the presence or absence of leakage,
Test method for waterproof performance of mobile phones. In the waterproof performance test apparatus used for the waterproof performance test method of the mobile phone according to claim 5 ,
A gripping part for elastically sandwiching the casing of the mobile phone;
A packing formed in an annular shape so as to surround the earpiece hole and disposed between the grip portion and the display panel and sealed;
A supply hole that opens into a space surrounded by the packing;
A tube for supplying gas to the supply hole;
Waterproof performance testing device.

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