JP4648939B2 - antenna - Google Patents

Description

  The present invention relates to a device mounting antenna, and more particularly to a device mounting antenna having an improved mounting structure of the antenna to the device.

  Information communication devices are required to be smaller and lighter, but in particular mobile devices equipped with antennas such as portable personal computers, PHS (Personal Handyphone System) phones, mobile communication devices such as cellular phones, etc. In the communication apparatus, it is necessary to connect the antenna to an electronic circuit on a circuit board in the apparatus.

  Conventionally, in various devices with built-in antennas, it is difficult to ensure good gain characteristics over the entire periphery of the antenna itself due to the radiation characteristics of the antenna itself. It was common to generate an electromagnetic field by passing an antenna current through the antenna. However, since the characteristics change when the positional relationship between the antenna element portion and the conductor close to the antenna element portion changes, in the conventional method, the structural dimension of the conductor connection portion (screwing) of the antenna is changed, It was necessary to provide a contact portion separate from the antenna.

  In Japanese Patent Laid-Open No. 2001-44726 (Patent Document 1), the housing is divided into two parts, an upper case and a lower case, and the antenna is attached to the joint portion of these cases in an antenna fixing structure. One case is provided with an antenna holding seat to which the antenna base end portion can be fitted, and the other divided case is provided with an abutment rib, and the divided case is joined to form the antenna holding seat and the abutment. The antenna base end is sandwiched between the ribs. As a result, the antenna can be fixed to the housing without using screws.

  In Japanese Patent Laid-Open No. 2000-261220 (Patent Document 2), an antenna connection terminal is prevented from being deformed, and the tip of the antenna connection terminal can always be in good contact with a predetermined circuit of a circuit board. Formed on the inner surface of the cable on the lower surface of the antenna connection terminal, an antenna connection terminal having a spring property with a rear end fixed to the part, a circuit board that overlaps the front end part of the antenna connection terminal, The tip has a protrusion facing the lower surface of the antenna connection terminal with a predetermined gap. Thereby, the bending of the antenna connection terminal and the circuit board is suppressed to a small state.

JP 2001-44726 A JP 2000-261220 A

  As described above, in a device incorporating an antenna, conventionally, the radiation characteristics and gain characteristics of the antenna itself change depending on the positional relationship between the conductor part of the device and the antenna itself, and other influences. It can be mounted at a position corresponding to each type of device by screwing etc., or the shape and size of the antenna state depending on the type of device, particularly the shape and size of the conductor connection part of the device It was necessary to change.

  Therefore, the first problem of the present invention is to propose an antenna that can be applied to various devices, particularly various devices having different shapes, dimensions, etc., of conductor connection portions.

  The second problem of the present invention is that the conductor connection portion is box-shaped, that is, the conductor connection portion occupies a position area approximate to the portion in the X, Y, and Z directions, and the antenna radiation characteristics and gain characteristics are as much as possible. It is to propose an antenna capable of improving the frequency.

In order to achieve the above object, according to the present invention, an antenna element part, a support part, and a ground contact spring part are integrally formed of a metal plate, and the support part has On the other hand, the antenna element portion is on one side, and the ground contact spring portion is elastically deformable from the support portion on the other side, and extends in the longitudinal direction of the support portion. On the other hand , an antenna is provided which is inclined outward by a predetermined angle so as to conduct to the ground .

Further, according to the present invention, an antenna element part, a support part, and a ground contact spring part are integrally formed of a metal plate, and the antenna element part is formed with respect to the support part. The ground contact spring portion is on one side and extends to the other side so as to be elastically deformable from the support portion, and the support portion has an upper surface of the rising strip extending in the longitudinal direction on one side of the rising strip. It has a shape that can be attached and fixed to the rising strip by straddling from the surface to the other surface, and at both ends, the end wall of the rising strip that is substantially orthogonal to the upper surface of the rising strip is one side surface of the rising strip from the other side has a portion curved in a U-shape, the antenna when mounted on the rising condition, the both ends in the longitudinal direction of the U-shaped curved portion of the longitudinal ends of the antenna support portion the rising Article Has a structure that is fitted and fixed Antenna is provided, characterized in that.

  The metal plate is a spring metal plate with good solder adhesion and no surface treatment. The material of the metal plate is white.

  As described above, according to the present invention, an antenna mounted on a device such as a portable personal computer is integrated with a material having a spring property by using a conductor used in a display unit such as a liquid crystal display unit. Since the antenna current can be caused to flow by the contact spring that is formed specifically, the radiation characteristics of the antenna itself can be improved, and good gain characteristics can be ensured.

  In addition, according to the antenna of the present invention, since the antenna is attached to the device in a shape straddling the rising line of the housing of the device, not the structure for fixing the antenna to the liquid crystal display unit with screws or the like, the dimensions of the device, particularly Even when the size and shape of the conductor portion of the liquid crystal display unit in contact with the antenna change, antennas having the same shape and size can be applied.

  In addition, according to the antenna of the present invention, even if the metal plate material constituting the antenna has a relatively small elastic modulus, it is in contact with the conductor portion of the equipment unit in an elastically deformed state. A sufficient contact area can be ensured, and the radiation characteristics and gain characteristics of the antenna can be improved.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

  1 and 2 are external views showing an electronic apparatus equipped with an antenna according to the present invention, for example, a portable computer as an example. FIG. 1 shows a state in which the apparatus is closed, and FIG. 2 shows a state in which the apparatus is opened. Show.

  The portable computer includes a main body 1 having a keyboard and a pointer, and a lid 2 having a liquid crystal display unit 4. The lid 2 can be rotated with respect to the main body 1 by a hinge 3 and can be opened and closed with respect to the main body 1. It is like that.

  That is, the lid 2 can be opened when the portable computer is used, and can be closed when the portable computer is not used. When the lid 2 is closed, the lid 2 is locked to the main body 1 by engaging with the lock member 1a provided on the main body 1, and when the lid 2 is opened, the lock member 1a is released. The lid 2 can be opened with respect to the main body 1.

  The casing constituting the lid portion 2 includes a back cover 5 and a front cover 6, and the liquid crystal display (LCD) unit 4 is sandwiched between the back cover 5 and the frame-shaped front cover 6. It is fixed.

  The liquid crystal display unit 4 is a rectangular flat plate as a whole, the liquid crystal display surface 4a occupying most of the area on the front surface side is surrounded by a rectangular frame-shaped front cover 6, and the back cover 6 disposed on the back side is The entire back surface of the liquid crystal display unit 4 is covered.

  As described above, the lid 2 is constituted by the back cover 5, the liquid crystal display unit 4, and the front cover 6. In this specification, the lid 2 is bound to the main body 1 in FIGS. In both cases, the hinge 3 side is referred to as the rear portion and the opposite side is referred to as the front portion even in the opened state of use. In the liquid crystal display unit 4, the back cover 5 side is referred to as a back surface, and the front cover 6 side is referred to as a front surface. Further, regarding the planar direction of the liquid crystal display unit 4, the left-right direction is the X direction, the front-rear direction is the Y direction, and the thickness direction of the liquid crystal display unit 4 is the Z direction.

  FIG. 3A is a perspective view showing a portion indicated by A of the lid portion 2 in FIG. 1, and a portion of the cover is cut away so that a portion to which the first antenna of the present invention is attached can be seen. FIG. 3B is a cross-sectional view taken along line CC in FIG. Similarly, FIG. 4A is a perspective view showing a portion indicated by B of the lid portion 2 in FIG. 1, and the portion of the cover is broken so that a portion to which the second antenna of the present invention is attached can be seen. FIG. 4B is a cross-sectional view taken along line DD in FIG.

  The rectangular plate-like main body portion 5a occupying most of the central region of the back cover 5 is formed as a molded product such as die cast using a material such as magnesium alloy, for example. The peripheral portion of the back cover 5, particularly the portion covering the antenna mounting portion, that is, the antenna cover 5b, is formed of an appropriate resin, for example, polycarbonate. The rectangular frame-shaped front cover 6 is integrally formed of a suitable resin, for example, a material such as ABS resin.

  The liquid crystal display unit 5 is sandwiched and held between the back cover 5 and the front cover 6. That is, a plurality of ribs 5c that are in contact with the back surface of the liquid crystal display unit 4 are arranged around the inner side of the back cover 5, and the front cover 6 has an inner frame portion 61 that contacts the surface periphery of the liquid crystal display unit and the liquid crystal. The display unit 4 has a plurality of rising strips 6b adjacent to the front, rear, left and right side walls. Accordingly, the liquid crystal display unit 4 is fixed by fitting the front cover 6 into the back cover 5 with the liquid crystal display unit 4 interposed therebetween. The front cover 6 has an inner frame portion 61 that contacts the peripheral portion of the surface of the liquid crystal display unit, and a rising strip 6 b that is adjacent to the front, rear, left, and right side walls of the liquid crystal display unit 4.

  This portable personal computer 1 has a pair of left and right antennas according to the present invention, and the right antenna 7 shown in FIGS. 3 (a) and 3 (b) is a pair provided on the front side of the front cover 6. The left antenna 7 shown in FIGS. 4 (a) and 4 (b) is similarly held by the rising ridge 6b on the front left side of the front cover 6. The In this manner, a pair of left and right rising ridges 6b each having a predetermined length are arranged on the same straight line at the front portion of the front cover 6, and the rising ridge 6b allows the liquid crystal display unit 4 to be The front position in the Y direction is regulated and the antenna 7 is held. Further, as will be described later, the antenna 7 is attached to the front end face of the surrounding side frame formed of the conducting portion of the liquid crystal display unit. It works to contact and ground.

  The pair of right and left rising strips 6b both have the same length, a predetermined height (which roughly corresponds to the thickness of the liquid crystal display unit 4 in the Z direction), and a predetermined thickness.

  5A is a perspective view of the antenna 7 of the present invention, as viewed from the front side, that is, the antenna ground portion side, and FIG. 5B is the same view, and is the rear side, that is, the liquid crystal display unit 4. This is a view from the side of the ground contact spring.

  The antenna 7 is preferably formed integrally with a sheet metal made of a spring metal material having good solder adhesion and no surface treatment. The most suitable metal material is white and white. This white is an alloy of copper (Cu), nickel (Ni), and zinc (Zn), and the white with a lot of nickel has the property that the electric resistance value does not change greatly with temperature change. Since it is used as a contact piece or a resistance material for electrical adjustment, it is preferably used as the antenna of the present invention. Western white contains copper (Cu), zinc (Zn), nickel (Ni) and a small amount of lead (Pb), iron (Fe), manganese (Mn), has a beautiful luster, spreadability, It is a material with good fatigue resistance and corrosion resistance and rich in drawability. From this point of view as well, it is suitable to be used as the material of the antenna of the present invention.

  FIG. 6 shows the antenna 7 and the liquid crystal display unit 4 of the present invention (rear view of FIG. 8). The antenna 7 is viewed from the liquid crystal display unit 4 side. When the antenna 7 is installed at a predetermined position where the rising strip 6 b is fitted, the ground contact spring of the antenna 7 contacts the front end face of the liquid crystal display unit 4. That is, when the liquid crystal display unit 4 is translated in the direction of the arrow E, such a state is obtained. 7 is a view of the antenna 7 as viewed from the arrow E in FIG. 6 and its left and right side views. FIG. 8 is a front view of the antenna 7 when viewed from the direction of the arrow G in FIG. 5A, and FIG. 9 is a bottom view of the antenna 7.

  The antenna 7 of the present invention has a central holding plate portion 10 that contacts the main part of the front wall surface of the rising strip 6b, and a rear wall surface of the rising strip 6b across the upper portion of the rising strip 6b from both ends of the holding plate portion 1. At both ends holding plate portions 11 and 12 and the ends of these both end holding plate portions 11 and 12, both ends of the rising strip 6b are bent in a U shape so that the tip portion contacts the front wall of the rising strip 6b. Both end U-shaped fixing portions 11a and 11b are provided. Accordingly, the support portion of the antenna 7 is constituted by the central holding plate portion 10, the both end holding plate portions 11 and 12, the U-shaped curved portions 11 a and 12 a at both ends, and the back side holding portion 13 to be described next. Yes.

  Further, the antenna 7 of the present invention has a back surface side holding plate portion 13 that is in contact with the back surface side across the upper portion of the rising strip 6 from the central holding plate portion 10, and slits 15 are formed from the back surface side holding plate portion 13. A ground contact spring 14 is formed at a distance (FIG. 6). The ground contact spring 14 is inclined toward the liquid crystal display unit 4 by a predetermined angle from its base, and when the antenna 7 is mounted on the rising strip 6a, as described above, the ground contact spring 14 is in contact with the front wall of the liquid crystal display unit, Conduction to is performed.

  An antenna element 20 is formed at a portion bent forward from the lower side of the central holding plate 10 of the antenna 7. This antenna 7 is a so-called dual type antenna, which is bent in the vertical direction by two antenna element portions 21 and 22 extending rightward in the horizontal direction and in a direction opposite to the antenna element portion in the horizontal direction. There is an extended or directional antenna element portion 23. For example, the horizontal antenna element portions 21 and 22 are 5.2 GHz (4.9 to 5.8 GHz), and the vertical antenna element portion 23 is 2.4 GHz. Since the element portion 20 of the antenna 7 is in the area inside the antenna cover 5b of the back cover 5, it is not affected by external force or the like, and stable radiation characteristics can be obtained.

  7 shows a feeder point for connecting the feeder line 8 (FIGS. 4A and 4B) of the antenna. The hook 25 is for guiding the feeder line 8.

  As described above, the antenna 7 of the present invention is formed by integrally processing a sheet metal with a single metal plate such as a white or white sheet. The pair of left and right antennas 7 and 7 have a symmetrical shape. In order to identify both, for example, as indicated by reference numeral 26 in FIG. 5B, one antenna 7 is marked with an L (left) mark, and the other antenna 7 is marked with an R (right) mark. Even when two or more different antennas are used, it is a matter of course that marks according to various applications can be adopted as long as the place where each antenna is installed can be specified.

  In this embodiment, the pair of left and right antennas 7 and 7 have a symmetrical relationship in the extending direction of the antenna element and the ground contact spring.

  When the liquid crystal display unit 4 is sandwiched between the back cover 5 and the front cover 6 and fixed, the pair of left and right antennas 7 and 7 having the above-described shape are fitted into the rising strip 6b. As well as the front-rear direction.

  FIG. 11 shows antenna wiring when a single antenna 7 is used, and FIG. 12 is a wiring diagram when a pair of left and right antennas are used as in the above embodiment. In these figures, 7 is an antenna, 7L and 7R are left and right antennas, 25 is a hook 25 is a hook portion for feeder wires, 30 is a cotton tape portion, 32 is a shrinkable tube, and 34 is connected and fixed to the apparatus main body side. Connected end.

  A pair of feeder lines extending from the left and right antennas 7 and 7 are joined together by a cotton tape 30 and guided through a gap between the liquid crystal display unit 4 and the back cover 5. It is connected to a circuit not shown on the side.

Although the embodiments of the present invention have been described in detail with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments, and various forms, modifications, and modifications are within the spirit and scope of the present invention. Etc. are possible.
(Appendix)
(Supplementary Note 1) An antenna in which an antenna element part, a support part, and a ground contact spring part are integrally formed of a metal plate, and the antenna element part is on one side with respect to the support part. The antenna is characterized in that the ground contact spring portion extends to the other side so as to be elastically deformable from the support portion. (1)
(Additional remark 2) The said support part has a shape extended in the longitudinal direction, and the said ground contact spring part inclines outside a predetermined angle with respect to the longitudinal direction of this support part. The described antenna. (2)
(Additional remark 3) The said support part has a shape which can be attached and fixed to this rising ridge so that the rising ridge extended in the longitudinal direction may be straddled, and it is the other surface from one surface of this rising ridge in both ends. U-shaped curved portions at both ends in the longitudinal direction of the antenna support portion are fitted into both longitudinal ends of the rising strip when the antenna is mounted on the rising strip. The antenna according to appendix 1, which has a fixed structure. (3)
(Supplementary note 4) The antenna according to supplementary note 2, wherein the metal plate is a spring-like metal plate having good solder adhesion and no surface treatment. (4)
(Supplementary note 5) The antenna according to supplementary note 4, wherein a material of the metal plate is white. (5)
(Appendix 6) A casing having a rising strip, a conductor unit around the casing, and a device unit fixed to the casing so that at least a part of the periphery is adjacent to the rising strip, and an antenna. ,
The antenna includes a support portion supported by the housing so as to straddle the rising stripe, and a ground contact spring that extends from the support portion to the periphery of the device unit and contacts at least a part of the periphery of the device unit. And an antenna element portion extending from the support portion to the opposite side of the support portion when viewed from the ground contact spring portion, and the support portion, the ground contact spring portion, and the antenna element portion are integrated with a metal plate. A device using an antenna, characterized in that the device is formed.

(Additional remark 7) It consists of an apparatus main body part, a cover part which has a display part which can be opened and closed with respect to this apparatus main body part via a hinge, and an antenna,
The lid portion includes a casing having a rising stripe, a conductor portion around the display, a display portion fixed to the casing so that at least a part of the circumference is adjacent to the rising stripe, and an antenna. And
The antenna includes a support portion supported by the housing so as to straddle the rising strip, and a ground contact spring that extends from the support portion to the periphery of the device unit and contacts at least a part of the periphery of the device unit. And an antenna element portion extending from the support portion to the opposite side of the support portion when viewed from the ground contact spring portion, and the support portion, the ground contact spring portion, and the antenna element portion are integrated with a metal plate. A device using an antenna, characterized in that the device is formed.

  (Additional remark 8) The said support part is extended in this longitudinal direction so that it can straddle the said rising strip extended by the predetermined dimension in the longitudinal direction, and the said ground contact spring part is with respect to the longitudinal direction of this support part. The ground contact spring portion is inclined to a conductive side portion of the display portion when the antenna is mounted on the rising strip, and is elastically contacted with the conductive side portion of the display portion. A device using the antenna according to appendix 6 or 7.

  (Additional remark 9) The said support part has the part which curved in the U-shape from the one surface of the front surface of the said rising strip, and the rear surface to the other surface in the both ends of the said rising strip extended in the longitudinal direction, Additional notes, wherein, when the antenna is mounted on the rising strip, U-shaped curved portions at both ends in the longitudinal direction of the antenna support portion are fitted and fixed to both longitudinal ends of the rising strip. A device using the antenna according to 6 or 7.

  (Supplementary note 10) The apparatus using the antenna according to supplementary note 6 or 7, wherein the metal plate is a spring-like metal plate having good solder adhesion and no surface treatment.

  (Supplementary note 11) The apparatus using the antenna according to supplementary note 10, wherein a material of the metal plate is white.

  (Supplementary note 12) The device using the antenna according to supplementary note 6 or 7, wherein the device unit or the display unit is a liquid crystal display unit.

  (Additional remark 13) The said apparatus is a portable personal computer, The apparatus using the antenna of Additional remark 7 characterized by the above-mentioned.

  (Additional remark 14) The rising line of the lid | cover part housing | casing which mounts the said antenna is a rising line provided in the apparatus front side opposite to the hinge side of the liquid crystal display unit which is the said apparatus unit, It is characterized by the above-mentioned. A device using the antenna according to 7.

  (Supplementary Note 15) A pair of the rising stripes of the lid housing on which the antenna is mounted is provided along the front side surface of the display unit at an interval on the same straight line, and one pair of the rising stripes is provided. The apparatus using an antenna according to appendix 7, wherein a pair of antennas are respectively mounted.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an external perspective view showing a morphological personal computer which is an embodiment of an apparatus using an antenna of the present invention in a closed state. It is an external appearance perspective view in the state which opened the portable computer of FIG. (A) is a partially broken perspective view showing a portion indicated by A of the lid portion of the apparatus shown in FIG. 1, and (b) is a sectional view taken along line CC in (a). (A) is a perspective view partially broken away showing a portion indicated by B of the lid portion of the apparatus shown in FIG. 1, and (b) is a sectional view taken along line DD in (a). (A) is a perspective view of the antenna of this invention seen from the antenna ground part side, (b) is a perspective view of the antenna of this invention seen from the ground contact spring (liquid crystal display unit) side. The antenna of the present invention is shown in a rear view, and a liquid crystal display unit is also shown. It is the top view and left-right side view of the antenna of this invention seen from the arrow E of FIG. The antenna of this invention is shown with a front view. It is a bottom view of the antenna of the present invention. It is an expanded sectional view in line FF of FIG. It is a wiring diagram at the time of using the single antenna of this invention. It is a wiring diagram at the time of using 1 pair of antennas of this invention.

Explanation of symbols

1 Portable personal computer (electronic equipment)
2 Lid 3 Hinge 4 Liquid crystal display unit 5 (51, 52) Back cover 6 (61, 62) Front cover 7 Antenna 8 Antenna feed line 6a Rising strip 10 Central support 11a, 12a U-shaped both ends 14 Ground contact spring 20 (21, 22, 23) Antenna element part 25 Hook part

Claims (4)

An antenna element part, a support part, and a ground contact spring part are integrally formed of a metal plate, and the antenna element part is on one side with respect to the support part, and the ground The contact spring portion extends from the support portion to the other side so as to be elastically deformable, and is inclined outward by a predetermined angle with respect to the longitudinal direction of the support portion having a shape extending in the longitudinal direction to conduct to the ground. antenna, characterized in that so as to be. An antenna element part, a support part, and a ground contact spring part are integrally formed of a metal plate, and the antenna element part is on one side with respect to the support part, and the ground The contact spring portion extends to the other side so as to be elastically deformable from the support portion, and the support portion straddles the upper surface of the rising strip extending in the longitudinal direction from the surface on one side of the rising strip to the surface on the other side. Thus, the end wall of the rising strip has a shape that can be attached and fixed to the rising strip, and the end wall of the rising strip that is substantially orthogonal to the upper surface of the rising strip from the one side surface to the other side surface of the support portion. U-shaped curved portions at both ends in the longitudinal direction of the antenna support portion are fitted into both longitudinal ends of the rising strip when the antenna is mounted on the rising strip. It has a fixed structure And to lure container. 3. The antenna according to claim 1, wherein the metal plate is a spring metal plate having good solder adhesion and no surface treatment. The antenna according to claim 1 or 2 , wherein a material of the metal plate is white.

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