JP2006025276A - Waterproof structure of portable radio set - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide the waterproof structure of a portable radio set with button keys separated from a chassis without the application of grease to a silicon rubber packing, etc. capable of easily performing assembling and disassembling work, and preventing flooding into the radio set. <P>SOLUTION: In the waterproof structure of a portable radio set in which a packing material 109 is placed between a case body 101 of the portable radio set and the chassis 107, the radio set is constructed so that the case body has a holder 204 which holds the packing material, the packing material is composed of a beltlike packing material covering all the periphery between the case body and the chassis, the beltlike packing material has a support component 203 which supports the chassis inside, the holder of the case body supports the beltlike packing material, and the supporter of the beltlike packing material supports the chassis. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a waterproof structure for a portable wireless device, and more particularly to a waterproof structure for a portable wireless device that prevents water from assembling a portable wireless device and that can be easily assembled and disassembled.

  The housing of an electronic device such as a portable wireless device or a cellular phone used outdoors is desired to have a waterproof structure so that rainwater or the like does not enter the inside. Various waterproof structures have been proposed. For example, the waterproof structure of a conventional commercial portable radio will be described with reference to FIG. FIG. 6A is a front external view of a commercial portable wireless device, and FIG. 6B is a cross-sectional view taken along line AA in FIG. In FIG. 6A, 601 is a front cover (also referred to as a case body), 602 is a display or display for display, 603 is a speaker, 604 is a microphone, and 605 is a mode selection button. 606 is a power switch. In FIG. 6B, reference numeral 607 denotes a chassis, and reference numeral 608 denotes a substrate on which electronic components are mounted (details are not shown). Reference numeral 609 denotes a silicone rubber packing, and reference numeral 610 denotes a battery cover. Since the board 608 on which electronic components are mounted is provided on the front cover 601 side of the chassis 607, the space formed by the front cover 601 and the chassis 607 needs to have a waterproof structure that prevents inundation such as rainwater. is there.

  FIG. 7 is a perspective view showing an exploded view of the commercial portable radio shown in FIG. FIG. 7 shows an exploded view with the front of FIG. In FIG. 7, reference numerals 701-1 and 701-2 denote groove portions for sandwiching the silicon rubber packing 609, and reference numeral 702 denotes a concave portion for forming buttons provided on the front cover 601. Here, the assembly of this commercial portable wireless device will be described. First, the chassis 607 is inserted into the space portion 703 of the silicon rubber packing 609, and the silicon rubber packing 609 is mounted in the sandwiching groove portion 701-1 of the chassis 607. The remaining part of the silicon rubber packing 609 is attached to the sandwiching groove part 701-2 of the chassis 607, and the silicon rubber packing 609 is attached to the entire periphery of the sandwiching groove parts 701-1 and 701-2 of the chassis 607. When the chassis 607 to which the silicon rubber packing 609 thus configured is mounted is mounted in the sandwiching groove 704 provided around the front cover (case main body) 601, the front cover 601 and the chassis 607 are fitted together, and the front cover is fitted. Since the space formed by 601 and the chassis 607 has a waterproof structure that prevents water from entering, the electronic components provided on the substrate and the like can be prevented from being infiltrated.

  Thus, in this conventional commercial portable radio, the silicone rubber packing 609 for waterproofing is sandwiched between the sandwiching grooves 701-1 and 701-2 of the chassis 607, and then the waterproof silicone grease is attached to the chassis side and the front cover. The structure is applied to the inner wall and assembled to satisfy the waterproof specification. However, since the silicon rubber packing 609 that secures waterproofing by sandwiching the silicon rubber packing 609 is a three-dimensional shape, the contact pressure of the silicon rubber packing 609 is weak, and there is a possibility that water may enter the inside from that part. The performance of the portable wireless device was degraded, or it was a cause of failure. In addition, it is difficult to form a three-dimensional silicon rubber packing 609 and to process the sandwiching grooves 701-1 and 701-2 of the chassis 607, and to accurately place the silicone rubber packing 609 in the sandwiching grooves 701-1 and 701-2 of the chassis 607. In order to mount, correction processing such as repeated cutting and try is necessary at the time of manufacture, and there is a problem that it takes production cost and time. In addition, the business portable radio having such a structure requires a jig or the like during assembly and disassembly.

  FIG. 8 is a diagram showing a partial configuration of a main part of a button key used in the commercial portable radio device. Note that the diagram shown in FIG. 8 shows a part of the side surface of the commercial portable radio device, and the same components as those in FIG. 6 are denoted by the same reference numerals. In FIG. 8, 801 is a button holder, 802 is a switch cover, 803 is a cushion, 804 is a rubber packing, and 805 is a switch button. The structure of this button key will be outlined below. First, the rubber packing 804 is inserted into a hole 806 provided in the chassis 607. The support portion 807 of the rubber packing 804 is fitted in and fixed to a recess 808 provided in the chassis 607, and the support portion 807 of the rubber packing 804 and the recess 808 of the chassis 607 are kept secret, and the chassis 607 is secured. It has a waterproof structure that prevents water such as rainwater from entering through the hole 806 provided in.

  The switch cover 802 is pressed when the operator presses it with a finger or the like, and the pressing pressure is transmitted to the switch button 805 via the rubber packing 804 so that the switch button 805 is turned on or off. ing. The cushion 803 functions as a cushion for returning the switch cover 802 to the original state when the operator stops pressing the switch cover 802.

  Thus, the configuration of the button key used in the above-described commercial portable radio device shown in FIG. ing. Thus, when the rubber packing 804 is provided in the chassis 607, there exists a problem that the structure of a button key becomes thick by the thickness of a chassis. In addition, rainwater or the like enters the outer surface of the rubber packing 804, that is, the chassis 607, causing a problem in waterproof reliability. Furthermore, since various components and switches are provided in the chassis 607, it has been difficult to make improvements such as increasing the button holder 801 and the switch cover 802 and improving the operability of the operator by an arbitrary shape.

  In addition, a waterproof structure of an electronic device (see, for example, Patent Document 1) shows a waterproof structure technique in which a packing is sandwiched between a case body and a chassis of an electronic device.

JP-A-11-87942

  Conventional wireless devices are known to have a waterproof structure in which a rubber packing is sandwiched between the front cover and the chassis. However, since the shape is three-dimensional, the contact pressure of the silicon rubber packing is weak, and that part In some cases, the inside of the mobile phone may be flooded, causing the performance of the portable radio device for business use to deteriorate or cause a malfunction. In addition, it is difficult to form a three-dimensional silicon rubber packing and process the pinching groove of the chassis. To accurately attach the silicon rubber packing to the pinching groove of the chassis, correction processing such as repeated cutting and try is required during manufacturing. There was a problem that it was necessary and costly to manufacture.

  Further, in the structure in which the button key is provided on the chassis, there is a problem in the reliability of waterproofness because the wireless device becomes thick and the outer surface of the chassis is immersed in water. Furthermore, there is a problem that it is not possible to create a button key that can be easily operated by the operator by making the switch cover an arbitrary shape.

  An object of the present invention is to provide a waterproof structure for a portable wireless device that can prevent water from entering the wireless device.

  Another object of the present invention is to provide a waterproof structure for a portable wireless device that can be easily assembled and disassembled without applying grease to a silicon rubber packing or the like.

  Another object of the present invention is to provide a waterproof structure for a portable radio having a structure in which a button key is separated from a chassis.

  Still another object of the present invention is to provide a waterproof structure for a portable wireless device with excellent operability of button keys.

  The present invention provides a waterproof structure for a portable wireless device in which a packing material is sandwiched between a case body of a portable wireless device and a chassis, wherein the case body has a holding portion for holding the packing material, and the packing material is The belt-shaped packing material has a support member for supporting the chassis therein, and the belt-shaped packing material is formed in the holding portion of the case body. The packing material is held, and the chassis is held by the support member of the band-shaped packing material.

  In the waterproof structure of the portable wireless device of the present invention, the packing material is made of an elastic body, and when the chassis is attached to the case body via the band-shaped packing material, the thickness of the band-shaped packing material is A part of the direction is configured to be deformed.

  Furthermore, the button structure of the portable wireless device of the present invention includes a hole provided in the case body of the portable wireless device, an elastic member that is provided movably in the hole and seals the hole secretly, The switch cover that presses the elastic member and a switch button provided on the chassis. The switch cover, the elastic member, and the switch button are sequentially arranged, and the switch cover is pressed to interpose the elastic member. The switch button is configured to be turned on and off.

  As described above, according to the present invention, a part for storing an electronic component or the like can be kept completely confidential with a simple structure, and a highly reliable radio can be realized. Further, the waterproof structure eliminates the application of grease, and a waterproof structure that can be easily assembled and disassembled can be realized. Furthermore, since the structure of the packing is simple, no force is applied to the left and right sides of the front cover, so that deformation of the cover can be prevented.

  In addition, since the button key is provided on the front cover, the structure can be separated from the chassis, so that a completely waterproof structure can be obtained. In addition, there is a feature that it is possible to realize a radio device that is easy to operate, such as a thin button structure and a large surface area of the switch cover.

  FIG. 1 is an external view showing an embodiment of the present invention. FIG. 1A is a front external view of an embodiment of the present invention, and FIG. 1B is a cross-sectional view taken along line BB in FIG. In FIG. 1A, 101 is a front cover (also referred to as a case body), 102 is a display or display unit for display, 103 is a speaker, 104 is a microphone, and 105 is a mode selection button. 106 are power switches, and 111 is a button key. In FIG. 1B, 107 is a chassis, and 108 is a board (details not shown) on which electronic components are mounted. Reference numeral 109 denotes a silicone rubber packing, which will be described in detail later. 110 is a battery cover. Since the board 108 on which electronic components are mounted is provided on the front cover 101 side of the chassis 107, the space formed by the front cover 101 and the chassis 107 has a waterproof structure that prevents inundation such as rainwater. . Reference numerals 112, 113, and 114 denote switch buttons, and 115 denotes a switch button mounting portion, which will also be described later.

  One embodiment of the present invention described above is a wireless device used in a digital business TDMA (Time Division Multiple Access) system, which is 55 mm wide × 100 mm long × 30 mm high, and has a weight of about An ultra-compact and light weight radio of 240cc has been realized. Therefore, a waterproof structure is devised to reduce the size, and a button key is made larger to improve operability. Hereinafter, details of the structure will be described with reference to FIGS.

  FIG. 2 is a perspective view showing an exploded view of the embodiment of the present invention shown in FIG. FIG. 2A shows an exploded view with the front of FIG. FIG. 2B shows an enlarged view of the circle 201 surrounded by a dotted line in FIG. The enlarged view of the circular portion 201 shows a state where the front cover 101, the silicon rubber packing 109, and the chassis 107 are combined. 2A, the silicon rubber packing 109 has a belt-like shape, and the cross-sectional shape is about 10 mm wide × about 0.7 mm thick (thickness when attached) as shown in FIG. 2B. 2), the belt-shaped silicon rubber packing 109 is configured to be supported by the support portion 204 of the front cover 101. The band-shaped silicon rubber packing 109 has a protruding portion 203, and the protruding portion 203 is a support member that supports the chassis 107. The protrusion 203 is formed over the entire circumference of the band-shaped silicon rubber packing 109. In a state where the band-shaped silicon rubber packing 109 and the chassis 107 are combined with the front cover 101, the band-shaped silicon rubber packing 109 is pressed against the front cover 101 by the chassis 107, and the thickness is compressed by about 5 to 15%. It is designed to keep confidential in this part. Therefore, in FIG. 2 (b), the width is about 10 mm × thickness about 0.7 mm, but the band-shaped silicon rubber packing 109 before mounting has a cross section of width about 10 mm × thickness about 0.8 mm. is doing. Further, the band-shaped silicon rubber packing 109 is not limited to silicon rubber, and is not particularly limited as long as it is an elastic material suitable for confidential sealing.

  Here, the assembly of the above-described embodiment of the present invention will be described. First, when the band-shaped silicon rubber packing 109 is fitted into the front cover 101, the band-shaped silicon rubber packing 109 is supported by the support portion 204 of the front cover 101. It is fixed in the state. When the chassis 107 is inserted in this state, the insertion portion of the band-shaped silicon rubber packing 109 is compressed, and the chassis 107 is inserted and supported by the support member 203 that supports the chassis 107 (the same as the protrusion 203 of the band-shaped silicon rubber packing 109). And fixed. Of course, it goes without saying that the chassis 107 is screwed to the front cover 101 as necessary. With this configuration, the space 205 formed by the front cover 101 and the chassis 107 has a waterproof structure that prevents water from entering, so that electronic components on the board provided in the space 205 can be prevented from being infiltrated. Note that the support portion 204 of the front cover 101 may be configured as a recess, and the band-shaped silicon rubber packing 109 may be inserted into the recess. This is more suitable for confidential sealing.

  Next, the switch button will be described. FIG. 4 is a front view of the switch button mounted on the switch button mounting unit 115. In FIG. 4, 401 is a press talk switch, 402 and 403 are volume switches, volume switch 402 is a switch that increases sound, and volume switch 403 is a switch that decreases sound. FIG. 5 is a front view of the switch cover of the volume switch 402, for example. Hereinafter, the button structure, for example, the volume switch 402 will be described in detail. Since the other volume switch 403 and the press talk switch 401 have a similar structure, detailed description thereof is omitted.

  FIG. 3 is a diagram showing an embodiment of the configuration of the main part of the button key of the present invention. In addition, the figure shown in FIG. 3 has shown a part of side surface of a present Example. In FIG. 3, reference numeral 101 denotes a front cover (or a case main body) shown in FIG. Reference numeral 301 denotes a button holder, 302 denotes a switch cover, and a front view is shown in FIG. 303 is a cushion, 304 is a rubber packing, and 305 is a switch button.

  The structure of this button key will be outlined below. First, the rubber packing 304 is inserted into a hole 306 provided in the front cover 101. The support portion 307 of the rubber packing 304 is fitted and fixed in a recess 308 provided in the front cover 101, and the support portion 307 of the rubber packing 304 and the recess 308 of the front cover 101 are kept secret, It has a waterproof structure for preventing rainwater and the like from entering through a hole 306 provided in the front cover 101. The rubber packing 304 may be an elastic body and is not limited to the rubber packing. 309 is a chassis, and 310 is a board on which components such as electronic devices are mounted. Accordingly, a space formed by the chassis 309 and the front cover 101 (corresponding to the space 205 shown in FIG. 2B) is kept secret by the rubber packing 304.

  The switch cover 302 is pressed when the operator presses it with a finger or the like, and the pressing pressure is transmitted to the switch button 305 via the rubber packing 304, and the switch button 305 is turned on or off. ing. The cushion 303 functions as a cushion for returning the switch cover 302 to its original state when the operator stops pressing the switch cover 302.

  As described above, the button key structure of the present invention includes the front cover 101, the switch cover 302, the cushion 303, the rubber packing 304, and the switch button 305. That is, in the conventional button key structure of FIG. 8, the rubber packing 804 is provided on the chassis 607. However, in one embodiment of the present invention shown in FIG. It is a structure to provide. Therefore, it is possible to make the wall thickness of the wireless device thinner than the conventional structure in which the rubber packing is provided on the chassis. Furthermore, by reducing the boss height of the switch cover 302, the height of the button holder 301 can be suppressed, and the button structure can be downsized.

  Further, by providing the rubber packing 304 on the front cover 101, the structure is separated from the chassis 309, and the front cover 101 can prevent water from entering from the direction of the button keys. A waterproof structure that prevents it from being immersed in water is realized.

  Further, since the button key is provided on the front case 101 side, the shape of the switch cover 302 and the button holder 301 can be appropriately sized under the shape of the front cover 101. Accordingly, a button key with excellent operability that realizes an increase in the surface area of the switch cover 302 is realized.

  Although the present invention has been described in detail above, the present invention is not limited to the embodiment of the waterproof structure of the portable wireless device described herein, and can be widely applied to the waterproof structure of the wireless device other than the above. Needless to say, you can.

The external view of one Example of this invention is shown. FIG. 2 shows a perspective view of an exploded view of one embodiment of the present invention shown in FIG. It is a figure which shows one Example of a structure of the principal part of the button key of this invention. The front view of the switch button mounting part of one Example of this invention is shown. The front view of the switch cover of one Example of this invention is shown. An external view of an example of a conventional portable wireless device is shown. The perspective view of the exploded view of an example of the portable radio | wireless machine shown in FIG. 6 is shown. It is a figure which shows an example of a structure of the principal part of the button key of the portable radio | wireless machine shown in FIG.

Explanation of symbols

101, 601: Front cover, 102, 602: Display, 103, 603: Speaker, 104, 604: Microphone, 105, 605: Mode selection button, 106, 606: Power switch, 107, 309, 607: Chassis, 108 310, 608: substrate, 109, 609: silicon rubber packing, 110, 610: battery cover, 111: button key, 112, 113, 114: switch button, 115: switch button mounting portion, 202: inner surface of the front cover, 203: Support member for supporting the chassis, 204: Front cover support portion, 205: Radio confidential space, 301, 801: Button holder, 302, 802: Switch cover, 303, 803: Cushion, 304, 804: Rubber Packing, 305, 805: Switch button, 06: Hole provided in the switch cover, 307, 807: Rubber packing support, 308: Recess provided in the front cover, 401: Press talk switch, 402, 403: Volume switch, 701: Clamping groove in the chassis 702: a recess for forming buttons, 806: a hole provided in the chassis, 808: a recess provided in the chassis.

Claims (2)

  In a waterproof structure of a portable wireless device in which a packing material is sandwiched between a case body of the portable wireless device and the chassis, the case body has a holding portion for holding the packing material, and the packing material is the case body And the belt-shaped packing material has a support member for supporting the chassis therein, and the belt-shaped packing material is formed in the holding portion of the case body. A waterproof structure for a portable radio, wherein the chassis is held by the support member of the band-shaped packing material. A hole provided in the case main body of the portable wireless device, an elastic member that is movably provided in the hole and seals the hole secretly, a switch cover that presses the elastic member, and a chassis The switch button, the elastic member, and the switch button are sequentially arranged, and the switch button is turned on and off via the elastic member by pressing the switch cover. Button structure of portable radio.

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