JPH0926834A - Electronic equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To completely prevent such failures as disconnection, etc., that are caused by the stress generated at a folded part by building the coils into a movable part to perform the transfer of data and power supplies via a non- contact system of the coils. SOLUTION: The electromagnetic connection parts 2 and 2' are provided on the backs of the 1st and 2nd divided pieces 1 and 10, so that both parts 2 and 2' are placed opposite to each other when a liquid crystal display added to the piece 10 is held up at an angle covering the visible range of a user. The part 2 contains to signal coils consisting or magnetic cores 6a to 6p which are wound by the coils 7a to 7q in a prescribe number of turns and also contains a power coil consisting of a magnetic core 6q which is wound by the coils 7q and 7r in a prescribed number of turns. Furthermore, the part 2' also contains the same coils as the part 2. In such a constitution, the data and power supplies can be transferred in a non-contact system including the coils 7a to 7r.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The main field of application of the present invention relates to a portable terminal device which comprises a first base and a second base connected by a movable part and which can be folded compactly and carried.
In particular, it improves the mechanical reliability of the movable part.

[0002]

2. Description of the Related Art In recent years, along with downsizing of electronic devices and power saving, various electronic devices have been actively made portable. Typical examples include mobile phones, PDAs, and notebook computers. Among these small mobile terminal devices, there is one in which a part of the body can be folded to make the external dimensions compact when housed in order to improve its portability and storability. FIG. 18 is a perspective view of a mobile phone, which is a typical example of a mobile terminal device having a folding portion. FIG. 19 is an enlarged view of portion E in FIG. The mobile phone of this example has a liquid crystal display 4 for displaying a telephone number and various messages, a key button 5 for inputting a telephone number, an earpiece 22 for generating a received voice, a radio wave transmitting and receiving radio wave. The first divided body 1 in which the antenna 24 is functionally arranged and the second divided body 10 in which the transmitting portion 23 for transmitting a voice is built are connected by the mechanical coupling portions 3a and 3b. Mechanical coupling 3a, 3b
Has a snail structure, and the first divided body 1 and the second divided body 10 can be opened and closed like a book. The electrical connection at the connecting portion between the first divided body 1 and the second divided body 10 is first made by using a flexible wiring 27 formed by chemically etching a copper foil on a polyimide film to form a predetermined wiring pattern. The first mounting board 25 built in the divided body 1 and the second mounting board 26 built in the second divided body 10 are connected to each other. 28 is a microphone for receiving the transmitted voice. Since the flexible wiring 27 is thin and relatively strong in bending resistance, it is used to electrically connect such a bent portion. However, in such a structure, since the wiring is exposed to the outside, damage due to a physical external force, troubles due to entry of moisture or the like from the outside, and the like are likely to occur. Moreover, since stress is applied to the wiring during bending, there is a limit to the reliability in repeated bending. It should be noted that although not shown in the figure, a mechanical coupling part is provided as a structure not using the flexible wiring 27.
Lead wires may be laid through the inside of 3, but in this case as well, it is difficult to completely guarantee reliability by repeated bending, and it is conceivable that a disconnection defect or the like may occur during long-term use.

[0003]

In the conventional portable terminal device having the folding mechanism described above, the electrical connection between the divided bodies is made by the physical wiring. Therefore, the mechanical and environmental reliability in the repeated folding is high. Had a problem of low. An object of the present invention is to provide a highly reliable folding mechanism by electromagnetic coupling for exchanging signals and power supplies without passing through physical wiring.

[0004]

[Means for Solving the Problems] Means for achieving the above object is to have a movable portion, and between a mounting substrate incorporated in a first base body and a second base body connected by the movable portion. In the electronic device for exchanging data and power in, a coil is built in the movable part, and a highly reliable folding mechanism is provided by exchanging data and power in a non-contact manner with the coil. is there.

[0005]

In the portable terminal device having the folding mechanism constructed by the above means, since there is no physical wiring in the folding part, no external stress is applied to the members constituting the internal circuit at the time of folding, so that the portable terminal device can be repeatedly folded. Can secure reliability. Moreover, since the confidentiality can be enhanced, the reliability of the environment can be enhanced.

[0006]

EXAMPLE A first example of the present invention will be described with reference to FIGS.

FIG. 1 is a perspective view showing a notebook type word processor which is an example of an electronic apparatus using the electromagnetic coupler of the present invention. FIG. 2 is an enlarged perspective view of the electromagnetic coupling section (the section shown in FIG. 1A) of the word processor shown in FIG. The word processor contains a CPU and other electronic components inside, and a first division body 1 in which key buttons 5 are arranged on the surface and electronic components such as an LCD driver inside, and a liquid crystal display 4 is installed on the surface. The second divided body 10 has a structure connected by two mechanical coupling portions 3a and 3b. The mechanical coupling portions 3a and 3b have, for example, a snail structure, and are configured such that the first split body 1 and the second split body 10 can be folded and stored compactly by a mechanical operation. When the liquid crystal display 4 installed on the second divided body 10 is lifted at an angle within the visible range of the user at the time of use, the rear surfaces of the first divided body 1 and the second divided body 10 face each other. The electromagnetic coupling portions 2, 2'are arranged in the. Electromagnetic coupling part 2
Inside each of the coils 7a, 7b, 7c, 7d, 7e, 7f, 7g, 7h, 7
Magnetic core 6a, 6b, 6c, 6d, 6e, 6f, 6g, 6h, 6i, 6j, 6k, 6l, 6m , 6n, 6o, 6
A power supply coil composed of 16 signal coils composed of p and a magnetic core 6q in which the coils 7q and 7r are wound a predetermined number of turns is built in. Similar coils are also incorporated inside the electromagnetic coupling section 2'to face these coils. Cylindrical sintering is used to efficiently transmit high-frequency signals by electromagnetic coupling to the magnetic cores for signals 6a-6p and 6a'-6p '.
Ni-Zn ferrite is used for the magnetic core for power supply, and E-type sintered Mn-Zn ferrite is used in consideration of coupling efficiency and hysteresis loss. In addition, the power supply coil is wound in two places to form two magnetic paths with one magnetic core.

Next, the principle of signal and power transmission will be described with reference to FIG. FIG. 3 is a block diagram showing a state of data communication using the electromagnetic coupler. Signal and power transmission to the liquid crystal display 4 of the word processor shown in FIG. 1 will be described as an example. A control signal for driving a liquid crystal display (LCD) 4, an address signal, and a data signal are sent to the first division body 1. The signal is converted into magnetic flux by each coil 7a-7p. The generated magnetic flux interlinks with the coils 7a 'to 7p' installed in the second divided body 10, and the signal is transmitted according to "Lenz's law". Since the signal waveforms received by the coils 7a 'to 7p' installed in the second split body 10 are bimodal waveforms peculiar to electromagnetic coupling, the waveform shaping circuit 11 converts them into digital waveforms of a predetermined level. After that, a signal is input to the LCD driver 12 to drive the liquid crystal display 4 in the same manner as a general liquid crystal display driving method. When the number of signal coils that can be installed is smaller than the number of signal lines due to the limited storage space, a logic circuit may be added to perform time-division transfer. Further, the power source is a power source for converting a direct current power source supplied from a power source line incorporated in the first division body 1 into a predetermined pulse waveform by an electromagnetically coupled power transmission circuit 8 including an oscillation circuit 801 and a coil driver 802. It is sent to the coils 7q and 7r. Power supply coil 7 installed on the second divided body 10 by electromagnetic induction similarly to the signal
Various components inside the second divided body 10 from the electromagnetic coupling power receiving circuit 9 including a rectifying / smoothing circuit 901 that rectifies the AC power received by q ', 7r' to a DC voltage and a constant voltage circuit 902 that stabilizes the voltage at a constant voltage. Supplied to electronic components.

FIG. 4 is a plan view showing a side surface of the electromagnetic coupling portion of the word processor shown in FIG. The electromagnetic coupling portions 2 and 2'are arranged so that when the second divided body 10 is raised by a certain angle θ1, the internal coils are opposed to each other. The angle θ1 is arbitrarily set within the visible range of the liquid crystal display. If the second split body 10 is folded at the time of storage, the electromagnetic coupling portions 2 and 2'are separated from each other, the power supply voltage is reduced, and the circuit inside the second split body 10 stops operating. Power consumption can be prevented. First division
The first and second divided bodies 10 are physically connected only by the mechanical coupling portion 3, and the stress during folding is concentrated only on the mechanical coupling portion 3. Therefore, the mechanical reliability is determined by the structure of the mechanical coupling portion 3 and can be separated from the communication reliability. That is, it suffices to ensure reliability such as wear and deformation in the mechanical operation of the mechanical coupling portion 3.

FIG. 5 is a perspective view of a coil assembly which is an example of a mounting form of a coil incorporated in the electromagnetic coupling section of the word processor shown in FIG. FIG. 6 is a sectional view of the coil assembly shown in FIG. This is a single component (coil assembly) assembled so that a plurality of coils can be easily mounted. A plurality of coil assemblies 20 (10 in the figure)
Individual) coiled magnetic cores 6a to 6j with a predetermined number of coils 7a to 7j wound on the signal coil and E-shaped magnetic core 6k with coils 7k and 7l.
The coil for power supply, which has been wound a predetermined number of times, is held by a coil base 13 formed by integrally molding the external terminals 14 with a molding resin such as PPS or liquid crystal polymer, and the ends of the windings of the external terminals 14 are made of, for example, phosphor bronze. Ends 15a-15l, 15a'-15
It has a structure in which it is connected to l'with solder 16a to 16l and 16a 'to 16l'. According to this structure, the positional accuracy of each coil is determined by the coil base 13
It is highly accurate because it is determined by the molding accuracy of. FIG.
As shown, by embedding the whole with the molding resin 17 so that only the external terminals 14 are exposed, the reliability as a component can be improved. With the above structure, a plurality of coils can be mounted at one time, which improves productivity.

FIG. 8 is a perspective view showing a state in which the first division body and the second division body of the word processor shown in FIG. 1 are separated. Since the second divided body 10 has no physical wiring, it can be easily separated by removing the stop pins 301a and 301b forming the mechanical coupling portion 3. Therefore, according to the configuration of the present invention, it is possible to easily carry out replacement work due to component failure or component upgrade. Further, by separating them, they can be made more compact, and the portability and storability can be further improved. Furthermore, since no physical wiring is required, a completely sealed structure is possible, and it can be expected to be used in a harsh environment and improved in maintainability such as washing with water.

9 and 10 are plan views showing a second embodiment for expanding the communication range of the electromagnetic coupling section of the word processor shown in FIG. In the above-described embodiment, it is possible to communicate at a position where the visible range is limited, but the visible range has a certain width depending on the body shape and posture of the user, and it is desirable to secure the communication range within a certain range. . 9 shows the magnetic core 6,
R is provided at the facing portion of 6'to prevent the coupling efficiency from changing so much within a certain angle range θ2. In FIG. 10, a movable coil holder 18 having a built-in coil is installed in the electromagnetic coupling portion on the side of the first divided body 1, and a pressing spring 19 can follow the movement of the second divided body 10.

A third embodiment will be described with reference to FIGS. 11 to 17. FIG. 11 is a perspective view showing a notebook word processor having the electromagnetic coupler of the present invention. FIG.
FIG. 12 is an enlarged perspective view of an electromagnetic coupling section of the word processor shown in FIG. 11. Data and electric power are exchanged between the first divided body 1 and the second divided body 10, and the electromagnetic coupling portions 2a and 2c formed in the first divided body 1 in a comb shape and the second divided body 10 are combined with each other. The tooth-shaped electromagnetic coupling portion 2b meshes with each other, and the electromagnetic coupling portions 2a and 2c
The cylindrical magnetic cores 6 ', 6b built in the
Signal coil composed of a.7b and electromagnetic coupling 2b
The coil for signal composed by winding a predetermined number of coils 7a'.7b 'on the cylindrical magnetic cores 6a', 6b 'built in the device is installed facing each other on the rotation axis of the mechanical coupling parts 3a, 3b. Be seen. By rotating the coil on the rotation axis of the folding operation for folding the communication between the first divided body 1 and the second divided body 10, the coils performing communication are arranged so that the relative positional relationship is unchanged. Therefore, the reliability of communication is not affected by rotating the second divided body 10 to any position.

FIG. 13 is a sectional view taken along the line dd 'of the electromagnetic coupling portion of the word processor shown in FIG. A magnetic flux can be efficiently collected in the power supply coil as shown in FIG.
The coil 7 is wound around and used. FIG.
In FIG. 3, the gap g of each coil is determined by the interlocking gap of the comb-teeth-shaped electromagnetic coupling portion, and therefore is determined in consideration of the coupling efficiency and the frictional resistance of the rotating operation. The spacing s between the coils incorporated in the same divided body is determined in consideration of the effect of crosstalk that picks up the signals of adjacent channels as noise, but if they are too far apart, the width w of the comb teeth becomes large and the electromagnetic coupling part 2 The number of coils that can be built into
Since the communication speed is limited, it is designed in consideration of the optimum value.

Further, as shown in FIG. 14, if all the coils use a pot core, the magnetic flux is confined, so that the coil spacing s can be reduced and the number of coils can be increased.

16 and 17 are examples of other coil structures capable of electromagnetic coupling in all directions. In FIG. 16, for example, a signal coil is formed by winding a coil 7.7 'around a resin coil bobbin 21, 21', and communication is performed through a cylindrical magnetic core 6 made of sintered Ni-Zn ferrite. Since the magnetic core 6 is used as the rotating shaft and both the electromagnetic coupling and the mechanical coupling are performed, it is not necessary to separately provide a mechanical coupling portion, so that the configuration is simple. However, if the mechanical strength of the magnetic core 6 cannot be guaranteed, a mechanical coupling portion may be separately provided. FIG. 17 shows a coil formed by winding a coil 7 around a magnetic core 6 made of, for example, a sintered Ni-Zn ferrite C type in the electromagnetic coupling portions 2a and 2c on the side of the first divided body 1 and the second divided body. Communication is performed by combining the electromagnetic coupling portion 2b on the 10 side with a coil configured by winding a coil 7'on a cylindrical magnetic core 6'made of, for example, sintered Ni-Zn ferrite. With this configuration, the magnetic flux is closed, so that the coupling efficiency is good.

[0017]

As described above, the portable electronic device having the electromagnetic coupler in the folding portion according to the present invention performs the exchange of the signal and the power through the folding portion by electromagnetic coupling, so that the folding generated conventionally. It is possible to completely prevent problems such as disconnection failure due to stress generated in the part, and it is also possible to realize a portable electronic device that is resistant to environmental factors such as water and dust.

[Brief description of drawings]

FIG. 1 is a perspective view showing a notebook type word processor which is an example of an electronic device using an electromagnetic coupler of the present invention.

FIG. 2 is an enlarged perspective view of an electromagnetic coupling unit (portion A in FIG. 1) of the word processor shown in FIG.

FIG. 3 is a block diagram showing a state of data communication using an electromagnetic coupler.

FIG. 4 is a plan view showing a side surface of an electromagnetic coupling section of the word processor shown in FIG.

5 is a perspective view of a coil assembly which is an example of a mounting form of a coil incorporated in the electromagnetic coupling section of the word processor shown in FIG. 1. FIG.

6 is a sectional view taken along line BB ′ of the coil assembly shown in FIG.

7 is a perspective view showing a state where the coil assembly shown in FIG. 5 is molded.

8 is a perspective view showing a state in which a first division body and a second division body of the word processor shown in FIG. 1 are separated.

9 is a plan view showing a second embodiment for expanding the communication range of the electromagnetic coupling section of the word processor shown in FIG.

10 is a plan view showing a second embodiment for expanding the communication range of the electromagnetic coupling section of the word processor shown in FIG.

FIG. 11 is a perspective view showing a notebook word processor having an electromagnetic coupler of the present invention.

12 is an enlarged perspective view of an electromagnetic coupling unit of the word processor shown in FIG.

13 is a cross-sectional view taken along the line dd 'of the electromagnetic coupling unit of the word processor shown in FIG.

FIG. 14 is a cross-sectional view of an electromagnetic coupling portion in which all coils are configured by pot cores.

FIG. 15 is a perspective view showing a coil having a configuration using a pot core.

FIG. 16 is an example of another coil structure capable of electromagnetic coupling in all directions.

FIG. 17 is another example of another coil structure capable of electromagnetic coupling in all directions.

FIG. 18 is a perspective view of a mobile phone, which is a typical example of a mobile terminal device having a conventional folding portion.

FIG. 19 is an enlarged view of a portion E in FIG.

[Explanation of symbols]

 1 1st division body 2 Electromagnetic coupling part 3 Mechanical coupling part 4 Liquid crystal display 5 Key button 6 Magnetic core 7 Coil 8 Electromagnetic coupling power transmission circuit 9 Electromagnetic coupling power receiving circuit 10 Second division body 11 Waveform shaping circuit 12 LCD driver 13 Coil Base 14 External terminal 15 Winding groove 16 Solder 17 Mold resin 18 Moving coil holder 19 Pressing spring 20 Coil assembly 21 Coil bobbin 22 Earpiece 23 Transmitter 24 Antenna 25 First mounting board 26 Second mounting board 27 Flexible wiring 28 microphone

Claims (4)

[Claims] 1. An electronic device having a movable part, wherein data and power are exchanged between a mounting substrate incorporated in a first base and a mounting substrate incorporated in the second base, wherein the movable part is inside the movable part. An electronic device having a built-in coil for exchanging data and power in a non-contact manner with the coil. 2. The electronic device according to claim 1, wherein data and power can be transmitted only in a movable range in which the opening / closing angle of the movable portion is limited. 3. The electronic device according to claim 2, wherein an opening / closing angle of a movable part capable of transmitting data and a power source matches an angle at which the electronic device user can use the device. And electronic equipment. 4. The electronic device according to claim 1, wherein the first base and the second base can be physically separated in the movable part.