JP2005175290A - Electronics - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electronic apparatus of two cabinet linking type which can obtain shielding effect to unwanted electromagnetic wave emitted from a joint by using simple configuration. <P>SOLUTION: A grounded conductor portion 8 composed of conductive material is inserted inside a flexible board 6 of a wire winding shape. Capacitor is formed between a signal line or a power supply line of the flexible board 6, and the conductor portion 8. After storing energy of unwanted electromagnetic wave generated from the flexible board 6 in the capacitor, discharge is performed to an earth line. As a result, radiation of the unwanted electromagnetic wave to the outside of a hinge part 5 is restrained. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an electronic apparatus in which two housings are configured to be openable and closable via a connecting portion and are electrically connected by a connecting portion.

  In electronic devices such as mobile phones and personal computers that can be opened and closed via a connecting part, it is not necessary from the connecting part such as a cable or flexible board that electrically connects the two cases through the connecting part. There is a high possibility that unnecessary electromagnetic waves are radiated and the unnecessary electromagnetic waves propagate through the air to the internal circuit of the two housings, causing a malfunction of the internal circuit. As a conventional example of countermeasures against such unnecessary electromagnetic waves, a configuration in which unnecessary electromagnetic waves are shielded by providing conductors on both front and back surfaces of a flexible substrate is disclosed (for example, see Patent Document 1). In the prior art disclosed in Patent Document 1, a conductive material for shielding unnecessary electromagnetic waves is provided on only one of two insulating sheets sandwiching a conductive pattern of a flexible substrate, and the flexible substrate is folded along a predetermined fold. At this time, the conductor pattern is configured to be sandwiched between the conductors for shielding to obtain a shielding effect.

  On the other hand, since the mechanical stress accompanying the opening and closing of the two casings is applied to the connecting portion that electrically connects the two casings, a configuration is also disclosed in which this is alleviated and wear of the connecting portions is suppressed ( For example, see Patent Document 2.) In the prior art disclosed in Patent Document 2, the flexible substrate is curled at the connecting portion, and the shaft portion that is not fixed to the inside of the flexible substrate is passed through, so that the degree of freedom of the curled portion of the flexible substrate is maintained. To improve the performance.

However, there is a problem that it is difficult to easily and inexpensively configure an electronic device that exhibits a shielding effect by these conventional techniques.
JP 2002-141618 A (second and third pages, FIG. 14) JP 2003-46275 A (second page, FIG. 2)

  In the prior art described in Patent Document 1, it is difficult to maintain sufficient flexibility to fold a flexible substrate having a shield layer on one side, and in terms of material cost and process (assembly work time) of the flexible substrate. There was a problem.

  Further, the shaft member described in the prior art of Patent Document 2 is provided for the purpose of improving the wear resistance while maintaining the degree of freedom of the curled portion of the flexible substrate, and is generated from the flexible substrate itself. No consideration is given to unnecessary electromagnetic shielding.

  As described above, the above-described prior art has a problem that it is difficult to obtain a shielding effect simply and inexpensively.

  The present invention has been made to solve the above problems, and provides a two-case connection type electronic device that can obtain a shielding effect with a simple configuration against unnecessary electromagnetic waves radiated from a connection portion. With the goal.

  In order to achieve the above object, an electronic device according to claim 1 of the present invention is characterized in that a first housing and a second housing are configured to be openable and closable via a connecting portion, and the connecting portion. And a connecting portion having a signal line or a power line for electrically connecting the first housing and the second housing, and a conductive material. A capacitor is formed between the signal line and the power supply line by being grounded and disposed through the inside of the winding shape formed by the connection portion, and energy of unnecessary electromagnetic waves generated from the connection portion is transferred to the capacitor. And a conductor portion for discharging and attenuating the ground circuit.

  In order to achieve the above object, an electronic apparatus according to claim 2 of the present invention is characterized in that a first housing and a second housing are configured to be openable and closable via a connecting portion; The connecting portion is disposed in a winding shape, and is electrically connected between the first casing and the second casing, and is formed of a radio wave absorber and is formed by the connecting section. And a radio wave absorber that absorbs and attenuates the energy of unnecessary electromagnetic waves generated from the connecting portion by being disposed through the inside of the winding shape.

  ADVANTAGE OF THE INVENTION According to this invention, it is possible to provide the 2 housing | casing connection type electronic device which can acquire a shield effect with a simple structure with respect to the unnecessary electromagnetic waves radiated | emitted from a connection part.

  Embodiments of the present invention will be described below with reference to the drawings.

  Hereinafter, Embodiment 1 of the present invention will be described with reference to FIGS. 1 and 2. In the first embodiment, the present invention is applied to a mobile phone that is folded in two upper and lower cases. FIG. 1 is a side view of a mobile phone with two housings open. In the figure, 1 is an upper housing, 2 is an upper substrate built in the upper housing 1, 3 is a lower housing, and 4 is a lower substrate built in the lower housing 3. Next, 5 is a hinge portion that connects the upper housing 1 and the lower housing 3 so as to be openable and closable, and 6 is a flexible substrate (hereinafter abbreviated as FPC) that electrically connects the upper substrate 2 and the lower substrate 4. It is. The FPC 6 is disposed in a winding shape inside the hinge portion 5. A signal line and a power supply line for connecting the upper substrate 2 and the lower substrate 4 are provided inside the FPC 6. The ground potentials of the upper housing 1, the upper substrate 2, the lower housing 3, and the lower housing 4 are all common. Reference numeral 7 denotes an antenna.

  FIG. 2A is a perspective view showing an arrangement state of the conductor portion 8 inside the hinge portion 5. In this figure, the conductor portion 8 is formed in the shape of a shaft and is disposed through the inner side of the winding shape formed by the FPC 6, and one of them is grounded. In addition, the conductor part 8 is comprised with the electroconductive material. FIG. 2B is a diagram showing a state in which the FPC 6 is developed, and a crank shape is formed so that the winding shape shown in FIG.

  With this configuration, a capacitor is formed between the signal line or power supply line inside the FPC 6 and the conductor 8, and the harmonic component of the signal line in the conductor 8, noise induced in the power supply line, etc. It stores unnecessary electromagnetic energy having a high frequency component and discharges it to the ground line. Thereby, it is possible to suppress unnecessary electromagnetic waves generated from the FPC 6 from being radiated to the outside from the hinge portion 5.

  The connecting portion between the upper substrate 2 and the lower substrate 4 is not limited to the FPC, and any cable may be used as long as it is flexible enough to form a winding shape inside the hinge portion 5. . The first embodiment is not limited to a mobile phone, and can be applied to any electronic device that is configured by connecting two housings so as to be openable and closable. Further, the present invention can be applied even if the connection mode is not a folding shape.

  As described above, according to the first embodiment of the present invention, it is possible to obtain a shielding effect against unnecessary electromagnetic waves radiated from the FPC 6 with a simple configuration in which the conductor portion 8 is inserted and grounded inside the winding shape of the FPC 6. Can do.

  Hereinafter, Embodiment 2 of the present invention will be described with reference to FIG. FIG. 3 is a perspective view illustrating an arrangement state of the radio wave absorber 8 inside the hinge portion 5 of the mobile phone according to the second embodiment. The configuration of FIG. 1 is also applied to the second embodiment. In the second embodiment, instead of the conductor portion in the first embodiment, a radio wave absorber having a radio wave absorber formed in a shaft shape is used. In FIG. 3, 9 is a radio wave absorber. Other configurations are the same as those in FIG.

  When configured in this manner, the electromagnetic wave absorption unit 9 absorbs unnecessary electromagnetic waves generated by high-frequency components such as high-frequency components such as noise that is passed through the signal line of the FPC 6 or noise induced in the power supply line. As a result, it is attenuated by the effect of dielectric loss or magnetic loss of the radio wave absorber 9 and is not easily radiated to the outside of the hinge 5.

  The connecting portion between the upper substrate 2 and the lower substrate 4 is not limited to the FPC, and any cable may be used as long as it is flexible enough to form a winding shape inside the hinge portion 5. The second embodiment is not limited to a mobile phone, and can be applied to any electronic device configured by connecting two housings so as to be openable and closable. Further, the present invention can be applied even if the connection mode is not a folding shape.

  According to the second embodiment of the present invention, a shielding effect against unnecessary electromagnetic waves radiated from the FPC 6 can be obtained with a simple configuration in which the radio wave absorber 9 is inserted inside the winding shape of the FPC 6. Furthermore, since it is not necessary to ground the portion inserted inside the winding shape as in the first embodiment, it is possible to further simplify the process and its configuration.

The figure which looked at the mobile telephone of the state which opened 2 housing | casing based on Example 1 of this invention from the side. The perspective view showing the arrangement state of conductor part 8 inside hinge part 5 of the cellular phone concerning Example 1 of the present invention, and the figure showing the state where FPC6 was developed. The perspective view showing the arrangement | positioning state of the electromagnetic wave absorption part 9 inside the hinge part 5 of the mobile telephone based on Example 2 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Upper housing | casing 2 Upper substrate 3 Lower housing 4 Lower substrate 5 Hinge part 6 Flexible substrate (FPC)
7 Antenna 8 Conductor 9 Radio wave absorber

Claims (4)

A main body configured such that the first housing and the second housing can be opened and closed via a connecting portion;
A connecting portion having a signal line or a power line that is arranged in a winding shape in the connecting portion and electrically connects between the first casing and the second casing;
A capacitor is formed between the signal line and the power line by being formed through a conductive material, grounded, and disposed through the inside of the winding shape formed by the connection portion, and unnecessary generated from the connection portion. An electronic apparatus comprising: a conductor portion that discharges and attenuates electromagnetic wave energy to the ground circuit through the capacitor. A main body configured such that the first housing and the second housing can be opened and closed via a connecting portion;
A connecting portion that is arranged in a winding shape in the connecting portion and electrically connects the first housing and the second housing;
A radio wave absorber that absorbs and attenuates the energy of unnecessary electromagnetic waves generated from the connection part by being disposed through the inside of the winding shape formed by the connection part and formed by a radio wave absorber. Electronic equipment characterized by   The electronic device according to claim 1, wherein the connection portion is a flexible substrate.   The electronic device according to claim 1, wherein the connection portion is a cable having flexibility.

Images