JP4953941B2 - Portable electronic devices - Google Patents

Description

  The present invention relates to a portable electronic device, and more particularly to a portable electronic device having a telescopic antenna and employing a waterproof structure for an antenna portion.

  Portable electronic devices such as mobile phones are equipped with antennas to realize wireless communication. In particular, with the recent implementation of one-segment broadcasting, portable electronic devices having an antenna for receiving this one-segment broadcasting have appeared.

  In addition, since such portable electronic devices are used outdoors, they may be exposed to rain or may be submerged. To protect electronic parts such as internal electrical and electronic circuits There are portable electronic devices with a waterproof structure. In the portable electronic device having the waterproof structure, when the portable electronic device has an antenna, the antenna portion needs to be waterproofed.

  As a portable electronic device including a telescopic antenna provided with a waterproof structure, for example, one disclosed in Patent Document 1 below is known.

The telescopic antenna disclosed in the following Patent Document 1 is mounted on a wireless device (portable electronic device). Specifically, the telescopic antenna is slidable between the antenna and the antenna via a contactor. A cylindrical guide member that is held and has a feeding point set therein, and a non-conductive bottomed cylindrical member that is connected to the guide member and can store the antenna. With such a configuration, the antenna is slidably held with respect to the radio, and a non-conductive bottomed cylindrical member capable of storing the antenna is connected to a guide member for supplying power to the antenna. Water that has entered from the gap between the antenna and the guide member can be held in the bottomed cylindrical member without changing the antenna characteristics, and entry into the wireless device can be prevented.
JP-A-5-291810 (Claim 1, paragraph [0009])

  However, in the telescopic antenna disclosed in Patent Document 1, water that has entered through the gap between the antenna and the guide member can surely be prevented from entering the wireless device by the bottomed cylindrical member. The bottomed cylindrical member is made of a rubber material such as silicon rubber or a synthetic resin material such as polyvinyl chloride, so it does not have sufficient strength and may be broken or broken due to long-term use. is there. Therefore, there is a problem that it is difficult to sufficiently secure the waterproof property of the antenna portion where the contraction / extension operation is performed a plurality of times only with the bottomed cylindrical member.

  The present inventors have been made in view of the above problems, and an object of the present invention is to provide a portable electronic device capable of ensuring the waterproofness of the antenna portion of the portable electronic device. That is.

In order to achieve the above object, a portable electronic device according to one embodiment of the present invention includes a substrate storage portion that houses a control board and is positioned on the front surface, and an antenna storage portion that stores an antenna unit and is positioned on the back surface. Re a body housing kicked set, a front case and a rear case covering a front surface and a back surface of the body housing, in a portable electronic apparatus having a housing with a, the antenna unit includes an antenna main body and, the antenna main body An antenna guide having a contact that contacts the antenna body, and a bottomed cylindrical body made of an insulating material capable of housing the antenna body connected to the antenna guide. A feeding protrusion is formed on a part of the outer periphery of the antenna guide, and the antenna housing portion communicates with the substrate housing portion. Is formed, characterized in that the power supply protrusion is connected to the control board in communication with the liquid-tight via a gasket to the communication hole.

  Further, in the above invention, the tip of the power supply protrusion is reduced in diameter via a step formed in the intermediate part thereof, and a protrusion that contacts the first packing is formed on the inner wall surface of the communication hole. The power feeding projection is inserted into the communication hole after the first packing is attached to the outer periphery of the reduced diameter tip portion, and the packing is sandwiched between the stepped portion and the projection. It is characterized by being.

  Further, in the above invention, an extending portion for fixing the antenna unit to the main body housing is formed in a part of the outer periphery of the antenna guide, and the feeding protrusion is provided in the extending portion. It is characterized by that.

  In the invention described above, a second packing for holding the antenna main body in a liquid-tight manner is attached to an inner peripheral wall surface of the antenna guide.

  By providing the above configuration, the present invention has the following excellent effects. That is, according to the above invention, since the antenna unit covers the antenna main body in a liquid-tight manner by the antenna guide and the cylindrical body, water or the like entering from the gap between the antenna main body and the antenna guide is transmitted to the control board. There is nothing. In addition to this, the antenna housing portion and the substrate housing portion are provided separately, and these housing portions are communicated only through the communication holes, and the power supply protrusions formed on the antenna guide are connected to the communication holes via the packings through the packing. For example, even if a tubular body formed of a relatively flexible resin or the like breaks due to the close communication, water does not reach the control board from the communication hole, and thus, more than the conventional one. A portable electronic device that achieves a high waterproof structure can be provided.

  According to the above invention, since the first packing is press-fitted and fixed to the outer periphery of the front end portion of the power supply protrusion, the power supply protrusion is inserted into the communication hole having the protrusion on the inner wall. It is in a state of being sandwiched between the step portion and the projection of the communication hole, and a good liquid-tight structure can be obtained.

  According to the above invention, the extending portion is provided in the antenna guide, and the entire antenna unit is fixed to the main body housing by the extending portion, so that it can be easily fixed.

  Moreover, according to the said invention, since the 2nd packing was provided in the inner wall face of the antenna guide, it becomes possible to suppress penetration | invasion into the antenna unit of water etc. by the effect | action of this 2nd packing.

  Hereinafter, the best embodiment of the present invention will be described with reference to the drawings. However, the embodiment shown below is a foldable mobile phone as an example of a portable electronic device for embodying the technical idea of the present invention, and the present invention is specified to this mobile phone. It is not intended and other embodiments within the scope of the claims are equally applicable.

  FIG. 1 is a schematic perspective view showing a mobile phone according to an embodiment of the present invention. FIG. 2 is an exploded perspective view showing the second casing of the mobile phone of FIG. 1 in an exploded manner. FIG. 3 is a rear view of the second housing with the rear case removed. 4A and 4B show the main body housing, FIG. 4A is a schematic perspective view seen from the front side, and FIG. 4B is a schematic perspective view seen from the back side. FIG. 5 is a schematic perspective view of the antenna unit. 6 shows the antenna unit, FIG. 6A is a left side view, FIG. 6B is a front view, and FIG. 6C is a right side view. FIG. 7 is a schematic cross-sectional view of the antenna unit, FIG. 7A is a diagram illustrating a state in which the antenna body is extended, FIG. 7B is a diagram illustrating a state in which the antenna body is in an intermediate position, and FIG. It is a figure which shows the state which shrunk.

  As shown in FIG. 1, a mobile phone 1 according to the present embodiment includes a first housing 10 having a display unit 11 and a speaker 12 on the front surface, and a second housing having various operation keys 21 and a microphone 22 on the front surface. The pair of first and second housings 10 and 20 are formed by connecting their short sides so as to be foldable via the hinge mechanism 2.

  The first housing 10 has a printed circuit board (not shown) for operating the display unit and the speaker inside, and a first front case 13 is attached so as to cover the front side of the printed circuit board. A first rear case 14 is attached so as to cover the back side of the printed board. The “front surface” described here refers to the surface on which the first and second housings 10 and 20 come into contact with each other when the mobile phone 1 is folded, and the “back surface” faces the front surface already described. It shall refer to the surface to be performed.

  As shown in FIGS. 1 and 2, the second housing 20 includes a second front case 25 covering the front side, a second rear case 30 covering the back side, and the second front case 25 and the second rear case. The main body housing 40 is covered with a front surface and a rear surface 30.

  Among these, the second front case 25 is made of a synthetic resin having a plurality of openings 26 for exposing the various operation keys 21 and the microphone 22 formed on the front surface, such as polyamide MXD6 reinforced with glass fiber, inorganic filler, or the like. It is formed from the formed plate-shaped body. The second rear case 30 is a plate-like body made of a synthetic resin material similar to that of the second front case 25 in which an opening 31 for exposing a battery storage portion 42 to be described later is formed at the center thereof. A lid 32 is detachably attached to 31. Further, the antenna in which the head 52a of the first antenna 52 of the antenna unit 50 to be described later is exposed at one corner of the end side connected to the first housing 10 by the hinge mechanism 2 of the second rear case 30. An exposure hole 33 is provided.

As shown in FIGS. 2 and 4, the main body housing 40 has, on the front side thereof, a substrate storage portion 41 that stores a printed circuit board (not shown) serving as a control substrate for controlling various functions of the mobile phone 1. On the back side, a battery storage portion 42 for storing a secondary battery 3 (see FIG. 3) serving as a power source for the mobile phone 1 is formed in the center portion, and on one side portion, antenna housing portion 4 5 is formed which is an antenna unit 50 to be described later is housed. The substrate housing portion 41 formed in the main body housing 40, battery compartment 42 and the antenna accommodating portion 4 5 is intended to be formed independently.

Antenna housing portion 45 is formed in the umbilical groove-shaped space extending along one of the pair of side surfaces which extend in the longitudinal direction of the body housing 40, the first housing of the antenna accommodating portion 4 5 the end portion of the side close to the connection portion of the body 10, communicating holes 46 connecting the antenna accommodating portion 4 5 and the board housing portion 41 is formed. The communication hole 46 is a substantially circular through hole, and the diameter thereof is set to be slightly larger than the diameter of a base portion 61b of a power supply protrusion 60 described later. Then, this is the inner wall surface near the end of the board housing portion 41 side of the communicating hole 46 is formed protrusion 46a is, the antenna accommodating portion 4 5 side of the projection 46a wall, the first packing P1 described later It is a contact surface. Further, in the two positions of the antenna accommodating portion 4 5 side adjacent to the communication hole 46, screw hole 47 is provided with screws B1, B1 to be described later is screwed.

  Next, the antenna unit 50 housed in the antenna housing section 45 will be described with reference to FIGS.

  The antenna unit 50 includes an antenna main body 51 that can be expanded and contracted in other stages, an antenna guide 55 that holds the antenna main body 51 in a slidable manner, and a cylindrical body 65 that is connected to the antenna guide 55. .

  Among these, the antenna main body 51 has a first antenna 52 having a head portion 52a whose diameter is enlarged so that a user can hold it with a finger or the like and having a relatively small diameter bowl-shaped body portion 52b, and the first antenna 52. A relatively large second antenna 53 made of a cylindrical member capable of accommodating the body portion 52b of the first antenna 52b, and one end of the second antenna 53 is connected to one end of the second antenna 53 by an antenna hinge mechanism 54a. Is formed of a flange-shaped base 54 that is shorter than the first and second antennas 51 and 52 and has a flange 54b larger than the diameter of the sliding hole 56 of the antenna guide 55. Yes.

  At least a part of the outer periphery of the first antenna 52, the second antenna 53, and the base material 54 is covered with a conductive material, whereby contact with a contact provided on the antenna guide 55 (inner peripheral wall of the antenna guide 55). Electrical connection is ensured.

  As shown in FIGS. 6 and 7, the antenna guide 55 is formed of a cylindrical conductive material having a sliding hole 56. The lower end 57a of the antenna guide 55 is set to have a diameter that abuts against the flange 54b portion of the base 54, and an outer periphery of the lower end 57a is provided at the end of a cylindrical body 65 described later. An annular protrusion 57a 'that contacts the outer surface is formed. The upper end portion 57b of the antenna guide 55 is provided with a second packing P2 on the inner wall surface close to the upper end portion 57b. The second packing P <b> 2 is provided to prevent water or the like from entering between the outer wall surface of the antenna body 51 and the inner wall surface of the antenna guide 55. Further, the diameter of the inner wall surface of the sliding hole 56 of the antenna guide 55 is adjusted so as to come into contact with the outer peripheral surface of the antenna body 51, and by such adjustment, the inner wall surface of the antenna guide 55 is adjusted. Substantially serves as a contactor. The outer diameter of the antenna guide 55 is smaller than the diameter of the antenna exposure hole 33, and the diameter is adjusted so as not to drop out of the antenna exposure hole 33.

  Furthermore, an extended portion 58 extending toward the side of the antenna guide 55 is formed in a part of the outer periphery of the antenna guide 55. The extending portion 58 is formed of a wide plate-like body, and is fixed to the main body housing 40 with screws B1 and B1 in the width direction, that is, in the vicinity of both ends in the same direction as the extending direction of the sliding hole 56. A pair of insertion holes 59 are formed. In addition, between the pair of insertion holes 59, 59, a power supply protrusion 60 is provided so as to stand vertically from one surface of the extending portion 58. The power supply protrusion 60 is formed of a cylindrical member, and its base 61b has a larger diameter than the tip 61a, and a step 61c is formed between the base 61b and the tip 61a. And the 1st packing P1 which consists of an O-ring or a flat packing is press-fit in the outer periphery of this front-end | tip part 61a (refer FIG. 2). Further, the tip end portion 61 a of the power supply protrusion 60 has a length slightly longer than the axial length of the communication hole 46, and when inserted into the communication hole 46, the tip end thereof is the substrate storage portion 41. It is designed to be exposed to the side.

  The first packing P <b> 1 that is press-fitted and attached to the tip end portion 61 a of the power supply protrusion 60 is formed of, for example, an O-ring, and its outer diameter is slightly larger than the inner diameter of the communication hole 46. It is set slightly larger than 61a. The length of the first packing P1 in the axial direction is set to be approximately the same as the length of the front end portion 61a of the power supply protrusion 60, and the front end portion 61a of the power supply protrusion 60 is inserted into the communication hole 46. The protrusion 46 a of the communication hole 46 and the step portion 61 c of the power supply protrusion 60 are compressed and supported.

  The cylindrical body 65 is formed of a cylindrical antenna housing 66 formed of a rubber material such as silicon rubber, and a sealing plug 67 that seals the lower end portion of the antenna housing 66. The antenna housing 66 has a flare portion 68 whose diameter is increased so that the upper end portion thereof can be press-fitted and fixed while the lower end portion 57a of the antenna guide 55 is liquid-tight. Further, the sealing plug 67 is pressed into the lower end portion of the antenna housing 66 to seal the lower end portion of the antenna housing 66 in a liquid-tight state.

  When the antenna main body 51 is expanded and contracted in the antenna unit 50 having the above-described configuration, first, when the antenna main body 51 is contracted, as shown in FIGS. 7C, 5, and 6, other than the head 52 a of the first antenna 52. Is housed in the antenna guide 55 and the cylindrical body 65, and at this time, the head 52 a is in contact with the upper end 57 a of the antenna guide 55. Then, when the antenna body 51 is extended by grasping and pulling the head 52a of the antenna body 51 from the state shown in FIG. 7C, first, only the first antenna 52 is extended and the second antenna 52 is shown in FIG. 7B. The trunk portion 52b housed in the antenna 53 is exposed to the outside, and then the second antenna 53 and the base material 54 are pulled out. Then, as this extension proceeds, the flange 54b of the base 54 comes into contact with the lower end 57a of the antenna guide 55 as shown in FIG. 7A, and the extension of the antenna body 51 is completed.

  Next, a method for fixing the antenna unit 50 to the main body housing 40 will be described with reference to FIGS. 2 and 3 in particular.

  First, the 1st packing P1 is attached to the front-end | tip part 61a of the electric power feeding protrusion 60 of the antenna unit 50. FIG. Then, the antenna unit 50 is housed in the umbilical groove-like antenna housing portion 45 from the back side of the main body housing 40. Next, the extending portion 58 of the antenna guide 55 is brought into contact with the wall surface in which the communication hole 46 and the screwing holes 47 and 47 of the main body housing 40 are formed, and the distal end portion 61 a of the power supply protrusion 60 is inserted into the communication hole 46. . At the time of this insertion, since the first packing P1 is attached to the outer periphery of the distal end portion 61a, the outer periphery of the first packing P1 comes into liquid-tight contact with the inner wall surface of the communication hole 46 and the power supply protrusion 60 The stepped portion 61c and the projection 46a of the communication hole 46 are sandwiched.

  Next, the antenna unit 50 is fixed to the main body housing 40 with screws B <b> 1 and B <b> 1 in a state where the distal end portion 61 a of the power supply protrusion 60 is inserted into the communication hole 46. Specifically, the screws B1 and B1 are inserted into the insertion holes 59 and 59 which are in communication with the screwing holes 47 and 47 by inserting the tip end portion 61a of the power supply protrusion 60 into the communication hole 46, and the screwing holes 47 and 47 are inserted. Is carried out by screwing them respectively. At this time, the length of the first packing P1 in the axial direction is adjusted so that the first packing P1 is clamped between the step portion 61c and the projection 46a with a predetermined pressure as the screws B1 and B1 are screwed together. As a result, the communication hole 46 is sealed in a liquid-tight state. Note that an antenna contact terminal (not shown) provided on the control board stored in the substrate storage unit 41 in advance is positioned at a position close to the end of the communication hole 46 on the substrate storage unit 41 side. The antenna contact terminal comes into contact with the front end portion 61 a of the power feeding protrusion 60 inserted through the communication hole 46. Therefore, the power supply state to the antenna body 51 is maintained well.

  As described above, according to the mobile phone 1 according to this embodiment, since the antenna portion employs a plurality of waterproof structures, for example, the cylindrical body 65 is broken by some external force or by long-term use. Even in the case of cracking or cracking, the control board can be protected from water or the like. In this embodiment, the foldable mobile phone 1 has been described as an example of the portable electronic device. However, it goes without saying that the present invention can also be applied to a slide-type mobile phone, a mobile phone including only one housing, and the like. Yes.

FIG. 1 is a schematic perspective view showing a mobile phone according to an embodiment of the present invention. FIG. 2 is an exploded perspective view showing the second casing of the mobile phone of FIG. 1 in an exploded manner. FIG. 3 is a rear view of the second housing with the rear case removed. 4A and 4B show a main body housing, FIG. 4A is a schematic perspective view seen from the front side, and FIG. 4B is a schematic perspective view seen from the back side. FIG. 5 is a schematic perspective view of the antenna unit. 6 shows an antenna unit, FIG. 6A is a left side view, FIG. 6B is a front view, and FIG. 6C is a right side view. FIG. 7 is a schematic cross-sectional view of the antenna unit, FIG. 7A is a diagram illustrating a state in which the antenna body is extended, FIG. 7B is a diagram illustrating a state in which the antenna body is in an intermediate position, and FIG. It is a figure which shows the state which shrunk.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Mobile telephone 10 1st housing | casing 20 2nd housing | casing 25 2nd front case 30 2nd rear case 40 Main body housing 41 Substrate storage part 42 Battery storage part 45 Antenna storage part 46 Communication hole 46a Protrusion 47 Screwing hole 50 Antenna unit 51 First antenna 52a Head 52b Body 55 Antenna guide 56 Sliding hole 58 Extending part 59 Insertion hole 60 Feeding protrusion 61a Tip 61b Base 61c Step 65 Cylindrical body 67 Sealing plug P1 First packing P2 Second Packing B1 screw

Claims (4)

A body housing and an antenna accommodating portion substrate receiving portion and the antenna unit control board is located on the front face is accommodated is positioned at the rear is accommodated is kicked their respective set,
In a portable electronic device comprising a housing having a front case and a rear case covering the front and back surfaces of the main body housing,
The antenna unit includes an antenna main body, an antenna guide having a contact that contacts the antenna main body while slidably holding the antenna main body, and an insulating material capable of storing the antenna main body connected to the antenna guide A bottomed tubular body made of
A feeding protrusion is formed on a part of the outer periphery of the antenna guide, a communication hole is formed in the antenna housing portion so as to communicate with the substrate housing portion, and the feeding protrusion is connected to the communication hole via a first packing. A portable electronic device, wherein the portable electronic device is inserted in a liquid-tight manner and connected to the control board.   The power supply protrusion has a tip reduced in diameter through a step portion formed in an intermediate portion thereof, and a protrusion that contacts the first packing is formed on an inner wall surface of the communication hole. Is inserted into the communication hole after the first packing is attached to the outer periphery of the reduced diameter tip portion, and the packing is sandwiched between the stepped portion and the protrusion. The portable electronic device according to claim 1.   The extension part for fixing the antenna unit to the main body housing is formed in a part of the outer periphery of the antenna guide, and the feeding protrusion is provided in the extension part. The portable electronic device according to 1.   The portable electronic device according to claim 1, wherein a second packing that holds the antenna main body in a liquid-tight manner is attached to an inner peripheral wall surface of the antenna guide.

Images