JP2009027019A - Electronics - Google Patents

Abstract

To provide an electronic device capable of reliably connecting between an outer surface and an inside of a housing while maintaining a good appearance.
A first molded body made of an insulator and having a hole and a second molded body made of an insulator and including a rib projecting from an inner bottom face to be closed with the first molded body; A substrate having a conductive wire installed so as to be in contact with the inner surface of the second molded body, a first conductive member having a cylindrical shape inserted into the hole, the hole and the first conductivity A conductive pattern that is sandwiched and fixed between the member, a second conductive member that connects the conductive wire and the end of the first conductive member opposite to the side in contact with the conductive pattern; There is provided an electronic apparatus comprising a screw for stopping the rib from the hole through the first conductive member.
[Selection] Figure 2

Description

  The present invention relates to an electronic device.

  The casings of folding and sliding electronic devices such as mobile phones and PDAs (Personal Digital Assistants) are composed of an upper casing and a lower casing. In this case, for example, the upper casing is a display unit, and the lower casing is an operation unit including a keyboard unit.

Each housing includes two molded bodies, and a liquid crystal display device, a keyboard unit, a substrate on which electronic components are arranged, a secondary battery, and the like are housed in the housing.

When a conductive pattern such as an antenna pattern is connected to a separated substrate or the like to supply power, a pin-shaped member, for example, a signal conduction member 10 is provided to supply power. (Patent Document 1).
JP 2004-193875 A

  However, securing a new space for the purpose of supplying power not only restricts the arrangement of components but also complicates the structure. The present invention provides an electronic apparatus that can reduce the number of assembly steps.

According to one aspect of the present invention, the second molded body is made of an insulating material and has a hole and a rib that protrudes from an inner bottom surface that is made of an insulating material and is closed with the first molded body. A substrate having conductive wires installed so as to be in contact with the inner surface of the second molded body,
A first conductive member having a cylindrical shape inserted into the hole, a conductive pattern sandwiched and fixed between the hole and the first conductive member, and the first conductive member A second conductive member that connects the conductive wire and the end opposite to the side in contact with the conductive pattern; and a screw that holds the rib from the hole through the first conductive member. Is provided.

  According to the present invention, an electronic apparatus capable of reducing assembly man-hours is provided.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In this embodiment, a case that constitutes a mobile phone will be described as an example.
FIG. 1 shows a first housing 5 according to an embodiment of the present invention. 1 is a perspective view of the housing, and FIG. 2 is a cross-sectional perspective view taken along the line AA of FIG. 3 is a cross-sectional view taken along the chain line AA in FIG. As can be seen from FIGS. 1 to 3, the present embodiment includes a first molded body 1, a second molded body 2, a printed board 7, a metal terminal 9, a conductive pattern 11, a conductive sleeve 13, and a screw 15.

Next, each member will be described with reference to FIGS.

As shown in FIG. 4, the second molded body 2 has ribs 2b at the four corners and four convex portions 2a inside the ribs 2b. The printed circuit board 7 is placed on the convex portion 2a.

As shown in FIG. 5, two conductive lines 7 a are included on the printed circuit board 7. The two conductive lines 7a are arranged in the vicinity of the side of the printed circuit board, and are placed in parallel on the opposite sides.

FIG. 6 shows a metal terminal 9. The metal terminal 9 has a concave portion 9a and a spring portion 9b. A hole 9c is formed in the center of the recess 9a.

Four metal terminals 9 are used in the housing, and the recesses 9a are placed in contact with the conductive wires 7a. Moreover, the hole portions 9c are respectively placed on the ribs 2b. In the claims, the metal terminal 9 is described as a second conductive member.

  FIG. 7 shows the first molded body. Holes 1 a are provided at the four corners of the first molded body 1. The hole 1 a has a taper shape in the thickness direction of the first molded body 1. The tapered shape is placed above the hole 1a. The first molded body 1 is placed so as to cover the second molded body 2. The first molded body 1 and the second molded body 2 are made of, for example, polycarbonate or ABS. Next, a conductive pattern is printed on the outer surface of the first molded body 1. Sheet metal or the like may be attached instead of printing. Further, the present invention is not limited to the antenna pattern and may be used for connection with an electronic component or the like.

  Next, the four conductive sleeves 13 shown in FIGS. 8 and 9 are respectively placed on the conductive pattern 11. The conductive sleeve 13 includes a tapered portion 13a and a cylindrical portion 13b. The cylindrical portion 13b is inserted into the ring portion 11a and the hole portion 1a and placed so that the tip of the cylindrical portion 13b is in contact with the spring portion 9b. The tapered portion 13a is in contact with the ring portion 11a. The conductive sleeve 13 is made of, for example, copper, iron, nickel or the like. In the claims, the conductive sleeve 13 is described as a first conductive member.

  The taper gradient of the hole portion 1a, the taper gradient of the ring portion 11a, and the taper gradient of the conductive sleeve 13 are substantially the same. Therefore, it is possible to superimpose in contact with each other.

  Next, the screw 15 is passed through the conductive sleeve 13, the hole portion 11 a of the conductive pattern 11, and the hole portion 9 c of the metal terminal 9, and is assembled and fixed to the female screw portion of the rib 2 b.

The first housing 5 is configured by combining the above members. Further, the first casing 5 is combined with the second casing 6 to constitute a mobile phone (FIG. 10). The second housing 6 includes a display unit 10a including a liquid crystal display device and an operation unit 10b. Further, the first housing 5 may have a display unit and an operation unit.

  Therefore, the conductive portion 7a on the substrate 7 and the metal terminal 9 are in contact, the metal terminal 9 and the conductive sleeve 13 are in contact, and the conductive sleeve 13 and the conductive pattern 11 are in contact. As a result, the conductive pattern 11 can be fed from the substrate.

  The operation unit includes a keyboard, a substrate made of glass epoxy on which an electronic circuit is placed, a secondary battery, and the like. Note that FIG. 10 illustrates a folding electronic apparatus, but a sliding structure may be used.

  Next, the operation of the conductive sleeve 13 will be described. A screw 15 is provided so as to penetrate the first molded body 1. The conductive sleeve 13 is provided through the first molded body 1 so as to surround the outer periphery of the screw 15. The conductive sleeve 13 includes a tapered portion 13a and a cylindrical portion 13b. On the other hand, the screw 15 includes a head portion 15a and a groove portion 15b (FIG. 3). The head 15a has a taper. The taper of the taper portion 13a of the conductive sleeve 13 is preferably substantially the same as the taper of the head 15a of the screw 15. When the pressure toward the first molded body 1 is applied to the head 15a by turning the screw 15 into the rib 2b, the contact area between the taper portion 13a of the conductive sleeve 13 and the conductive pattern 11 is increased by the head 15a. And can be contacted efficiently. The cylindrical portion 13b needs to have a sufficient length so as to be in contact with the spring portion 9b. In the present embodiment, the outer shape of the cylindrical portion 13b is a columnar shape, but is not limited thereto, and may be a prismatic shape.

Next, the operation of the metal terminal 9 will be described. The metal terminal 9 is rectangular. A recess 9a for contacting the bottom portion with the conductive portion 7a is provided. Further, a spring portion 9 b for contacting the conductive sleeve 13 is provided. By making the spring shape, the contact pressure between the conductive sleeve 13 and the spring portion 9b is kept constant. The metal terminal 9 is not limited to a rectangular shape, and may have other shapes. Further, the concave portion 9a is not limited to the concave shape, and may be a spring shape or other shapes. It is not restricted to the spring shape of the spring part 9b.

The present invention proposes an efficient power feeding method using the respective screw holes for fixing the first molded body 1 and the second molded body 2.

Here, the description of the antenna pattern will be supplemented.
11A and 11B are schematic diagrams showing the structure of the antenna. FIG. 11A shows a monopole antenna and FIG. 11B shows a dipole antenna. The length of the antenna pattern 20 of the monopole antenna is about a quarter wavelength. The power feeding unit 50 is connected to one end of the monopole antenna and the ground 52 to excite the antenna.

  The ground 52 is provided on the back surface of the substrate 40, for example, and acts like a half-wavelength antenna by the broken line image in FIG. Since the dielectric constant of the material constituting the first molded body 10 is larger than 1, the wavelength is shortened from the free space, and the antenna pattern 20 can be downsized.

  FIG. 11B shows a dipole antenna. The length of the antenna is about one-half wavelength. Each of the two divided at the midpoint of the antenna putter 20 is connected to the power feeding unit 50 to excite the antenna. The power feeding unit 50 is provided on the substrate 40 and is connected to the antenna pattern 20 by the conductive pattern 42. As another antenna, an inverted F antenna, a loop antenna, a folded monopole antenna, a folded dipole antenna, or the like can be used.

  In the present embodiment, it is easy to supply power to the plurality of conductive patterns 11 from the hole 1a of the first molded body 1 for screwing. In this way, it becomes easy to provide a plurality of antenna patterns 11 corresponding to the multiband.

  As a result, not only mobile phone triple bands such as GSM (Global System for Mobile Communication), DCS (Digital Cellular System) / PCS (Personal Communications Service), but also wireless LAN, FM and AM broadcasting, GPS (Global Positioning System), The transmission and reception functions can be expanded to include one-segment broadcasting that receives digital terrestrial broadcasting. Furthermore, an electronic device that can be reduced in size and thickness while maintaining stable electrical connection is provided.

  Although the case where the conductive pattern is an antenna pattern has been described in the above embodiment, the present invention is not limited to this. Even a conductive pattern for wiring with a circuit component including a semiconductor element is included in the present invention.

  In the above embodiment, the foldable electronic device including the first housing 5 and the second housing 6 has been described. However, the present invention is not limited to this. A sliding electronic device may be used. Further, one casing may be used without overlapping the two casings.

  The embodiments of the present invention have been described above with reference to the drawings. However, the present invention is not limited to these embodiments. Even if a person skilled in the art makes various design changes with respect to a housing, a conductive member, a conductive pattern, a substrate, a power feeding unit, an antenna pattern, and the like that constitute an electronic device, it is included in the present invention without departing from the gist of the present invention. Is done.

It is a perspective view which shows the electronic device concerning embodiment of this invention. It is a perspective view showing the section of the electronic equipment concerning an embodiment of the invention. It is sectional drawing which shows the electronic device concerning embodiment of this invention. It is sectional drawing which shows one component which comprises the electronic device concerning embodiment of this invention. It is sectional drawing which shows one component which comprises the electronic device concerning embodiment of this invention. It is sectional drawing which shows one component which comprises the electronic device concerning embodiment of this invention. It is sectional drawing which shows one component which comprises the electronic device concerning embodiment of this invention. It is sectional drawing which shows one component which comprises the electronic device concerning embodiment of this invention. It is sectional drawing which shows one component which comprises the electronic device concerning embodiment of this invention. It is a perspective view which shows an electronic device. It is a schematic diagram explaining an antenna pattern.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 1st molded object, 1a hole part, 2nd molded object, 2b rib, 7 board | substrate, 9 metal terminal, 11 electrically conductive pattern, 13 electrically conductive sleeve, 13a taper part, 15 screw

Claims (5)

A first molded body made of an insulator and having a hole and a second molded body made of an insulator and including a rib projecting from an inner bottom surface to be closed with the first molded body;
A substrate having a conductive wire placed in contact with the inner surface of the second molded body;
A first conductive member inserted into the hole and having a cylindrical shape;
A conductive pattern sandwiched and fixed between the hole and the first conductive member;
A second conductive member that connects the conductive line and the end opposite to the side in contact with the conductive pattern of the first conductive member;
An electronic apparatus comprising: a screw for stopping the rib from the hole portion through the first conductive member. The electronic device according to claim 1, wherein the hole portion and the first conductive member have a tapered portion. 3. The electronic apparatus according to claim 2, wherein the conductive pattern is sandwiched and fixed between a tapered portion of the hole portion and a tapered portion of the first conductive member. The electronic device according to claim 1, wherein there are a plurality of ribs. The electronic device according to claim 1, wherein there are a plurality of holes.