JPH0878080A - Input/output terminal structure for portable appliance - Google Patents

Abstract

PURPOSE: To improve strength against static electricity (static electricity resistance) at the time when an external appliance is not connected to a portable appliance main body, prevent static electricity from intrude in through a gap of a connection part, and prevent erroneous operation and electric communication failure by keeping stable contact pressure. CONSTITUTION: At the time when an external appliance is not connected with a portable appliance main body 15, a washer 1-1 is lifted along an insulating member 2 by an auxiliary elastic member 12 so as to part an input/output terminal 1 and the circuit part terminal 5 of a circuit substrate mutually. As the same time, the washer 1-1 is brought into contact with an earthing terminal 8. Consequently, static electricity intruding in from the outside passes an earthing line 17 shown as a dotted line and does not affect electronic parts of the circuit substrate. Moreover, the circuit part terminal 5 is made of a conductive and elastic material, so that the terminal 5 can be sagged and deformed following the movement toward the connection direction (downward in the figure) of the input/output terminal 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an input / output terminal structure of a portable device having an input / output terminal for an external device, and more particularly to an input / output terminal structure in consideration of measures against static electricity.

[0002]

2. Description of the Related Art Conventionally, in a structure of an input / output terminal of a portable device having an input / output terminal for an external device, as a structure in consideration of measures against static electricity, as proposed in Japanese Utility Model Laid-Open No. 60-29296, A structure has been proposed in which electrical connection with a circuit in a mobile device is established only when the terminal is connected to a terminal of an external device, and the contact portion between the terminal and the circuit in the mobile device is opened in other states.

FIG. 7 shows an example of a conventional static electricity countermeasure structure of an input / output terminal of a portable device. 31 is a through hole portion 3 of the insulating member 32.
2-1 is an input / output terminal made of a metallic material, 33 is a circuit board as a circuit part on which a circuit element such as an IC 34 is mounted, 35 is a metallic material, and is connected to the circuit board 33 by a lead wire 36. Circuit part terminal, 48 is a washer which is fixed to the input / output terminal 31 and which prevents the removal,
Reference numeral 39 is an input / output terminal of an external device 46 made of a metal material and fixed to the through hole 40-1 of the insulating member 40, and 45 is a main body of the portable device.

When the external device 46 is not joined, the elastic member 42 pushes up the washer 48, and at the same time pushes up the input / output terminal 31 as well.
5 is opened, and it is proposed that external static electricity does not enter the circuit terminal 35. When connecting the external device 46,
The input / output terminal 31 is an input / output terminal 39 fixed to an external device.
The elastic member 42 is also pushed in by the above and is also joined to the circuit terminal 35 to stop.

[0005]

The above-mentioned structure is designed for the purpose of preventing static electricity from entering the circuit of the portable device body through the terminal when the external device is not connected to the portable device body. There is. However, in the structure as shown in FIG. 7, there is no problem with weak static electricity, but when strong static electricity enters, static electricity reaching the end of the input / output terminal 31 is sparked to the circuit side. , Circuit IC3
4 will be invaded and the product will be destroyed, and malfunction will occur.

Further, both the input / output terminal 39 of the external device and the input / output terminal 31 of the main body of the portable device are made of metal, which causes dimensional variations in processing. Particularly, when the external device 46 is connected when the dimension in the longitudinal direction tends to be positive, the input / output terminal 31 of the portable device body pressed by the input / output terminal 39 of the external device is first joined to the circuit terminal 35. Stop. However, the exteriors of the mobile device body 45 and the external device 46 are not yet joined to each other, and a gap is generated between the mobile device body 45 and the external device 46, resulting in an unstable connection. Dust, static electricity, etc. will enter from the gap. In particular, the invading static electricity invades the IC or the like of the circuit through the above-mentioned terminals to cause product damage or malfunction.

On the contrary, when the longitudinal dimension of both terminals becomes negative, the external parts of the portable device main body 45 and the external device 46 are first joined and pushed by the input / output terminal 39 of the external device. Further, the input / output terminal 31 of the main body of the portable device is not joined to the circuit terminal 35, and there is a problem that conduction is lost.

[0008] Therefore, the present invention eliminates such drawbacks, and an object thereof is to improve the strength against static electricity (electrostatic resistance) when an external device is not connected to the main body of the portable device.

Further, the main body of the portable device and the external device are closely connected to each other to prevent static electricity from intruding through the gap, and also to secure a stable contact pressure to prevent malfunction and conduction failure. To aim.

[0010]

According to the input / output terminal structure of a portable device of the present invention, the main body of the portable device and the external device are connected in close contact with each other, and the external device is provided on the external device. Input / output terminal of the portable device body and the input / output terminal of the portable device body that is connected to the input / output terminal of the external device and is movable in the direction toward and away from the board of the portable device body. An elastic member that generates a repulsive force for moving the output terminal, and a grounding means that establishes electrical continuity between the input / output terminal on the portable device body side and the ground portion provided on the portable device body side when an external device is not connected, It is characterized by having.

As the elastic member, (1) a conductive elastic member for input / output signal connection arranged between the input / output terminal of the portable device body side and the circuit board of the portable device body side, and the portable device It is composed of an auxiliary elastic member that generates a force to move the main body side input / output terminal in the direction of separating from the circuit board, and (2) the first input / output terminal on the main body side of the portable device which is configured to be slidable. And a second input / output terminal that engages with the first input / output terminal and transmits an input / output signal to the circuit board on the side of the portable device body, (3) side of the portable device body Be located on the outer periphery of the input / output terminal of
Is desirable.

[0012]

The operation of the input / output terminal structure of the portable device of the present invention is as follows.

According to the present invention, when an external device is connected to the portable device main body, the input / output terminal and the circuit terminal are joined and the ground terminal is not joined. When not connected, the input / output terminal and the circuit terminal are not joined and the ground terminal is joined.
As a result, static electricity that enters the input / output terminals when no external device is connected to the portable device body flows to the ground, so that static electricity does not enter the circuit board. Therefore, the strength against static electricity (electrostatic resistance) can be improved.

Further, by providing an elastic member for moving the input / output terminals of the portable device main body, the processing of the input / output terminals of the portable device main body and the external device when the external device is connected It is possible to absorb the above dimensional variations. That is, the distance between both input / output terminals is set in advance so that the electrical connection can be surely made in consideration of the variation in dimensions, and the variation is absorbed by the deformation of the elastic member. As a result, the mobile device main body and the external device can be tightly joined to each other, and an appropriate contact pressure is secured between the input / output terminal and the circuit terminal of the mobile device main body.

According to a second aspect of the present invention, the terminal itself for connecting the input / output terminal of the main body of the portable device and the circuit board of the main body of the portable device is a conductive elastic member, so that the member is installed on the circuit board side. This absorbs the dimensional variation of the input / output terminals. As a result, the structure of the input / output terminal itself and the configuration around the input / output terminal can be simplified. This simplifies the structure of the connecting portion between the input / output terminal of the external device and the input / output terminal of the main body of the portable device, so that the reliability of the connecting portion can be improved.

According to the present invention, the elastic member is provided inside the input / output terminal of the main body of the portable device, so that the space occupied by the input / output terminal can be skillfully utilized to further reduce the size of the input / output terminal. It is a thing.

According to a fourth aspect of the present invention, by disposing the elastic member on the outer peripheral portion of the input / output terminal on the side of the portable device main body, the area around the circuit section terminal of the circuit board can be opened, and the surrounding area of the input / output terminal can be improved. The structure becomes extremely simple and simplified. As a result, the effective use area of the circuit board can be expanded, the manufacturing of the mobile device body can be facilitated, and the cost can be further reduced.

[0018]

Embodiments The input / output terminal structure of a portable device of the present invention will be described according to embodiments.

(1) First Embodiment FIGS. 1 and 2 show an embodiment of an input / output terminal structure of a portable device according to the present invention. FIG. 1 is a cross-sectional view showing a state in which an external device is connected to a portable device main body by a connecting means (not shown). FIG. 2 is a cross-sectional view showing a state when an external device is not connected.

In FIGS. 1 and 2, 1 is an insulating member 2.
I / O terminals made of a conductive material arranged in the through hole portion 2-1 of the circuit board, 3 is a circuit board as a circuit portion on which a circuit element such as IC 4 is mounted, and 5 is a conductive rubber or a metallic coil spring. , A circuit section terminal which is made of a conductive elastic material such as a leaf spring and which is connected to the circuit board 3 by the lead wire 6 as a circuit conducting means, 7 is a grounding section made of a metallic member, and 8 is a grounding means. A ground terminal made of a conductive member, 9 is a conductive input / output terminal arranged in the through hole 10-1 of the insulating member 10, and 11 is a rubber-like waterproof for preventing water from entering the body of the portable device. The packing 12 is an auxiliary member for switching the washer-shaped conductive member 1-1 fixed to the center of the input / output terminal 1 so that both the input / output terminals 1 and 9 can be moved in the contact and separation directions. Elastic member, 13 is an elastic member An insulating member to be held, 14 is an insulating support plate for supporting the circuit terminal 5, the auxiliary elastic member 12, and the insulating member 13, 15 is a portable device main body having an input / output terminal for an external device, and 16 is an input / output terminal. It is an external device equipped.

The portable device body 15 and the external device 16 are connected and held by the magnetic force of a permanent magnet, a screw pin, a hook or the like. The input / output terminal 1 of the main body of the portable device is moved in the vertical direction in FIG. 1 by an auxiliary elastic member 12 such as a coil spring, and when the external device 16 is connected, the input / output terminal 1 is pushed into the input / output terminal 9 of the external device to be moved. At the same time, the washer-shaped conductive member 1-1 attached to the central portion of the input / output terminal is separated from the ground terminal 8 installed on the upper insulating member 2,
The earth continuity circuit is cut off. The tip of the input / output terminal 1 is
After that, it contacts the circuit terminal 5 and passes through the conductor 6 to the IC 4
Is conducted to the circuit board 3 on which is mounted. By providing such circuit conducting means, conduction to the main body of the portable device becomes possible only when the external device is connected.

The circuit section terminal 5 is made of a conductive elastic material, and the input / output terminal 1 of the portable apparatus body pressed by the external apparatus input / output terminal 9 is connected to the portable apparatus body before the exterior portion of the external apparatus is joined. Even if there is a dimensional variation, the dimensions are set so that the circuit terminal 5 is always joined, and the dimensional variation in the longitudinal direction is absorbed by the circuit terminal 5 made of a conductive elastic material, so that the portable device main body and the external device are connected to each other. Can be joined in close contact. In addition, static electricity intrusion when connecting external equipment is
By using a conductive member for the external device and mobile device body,
As shown in the earth path 17 in FIG.

FIG. 2 is a sectional view showing an embodiment when the external device 16 is not connected to the portable device main body 15 according to the present invention. When the external device is not connected, the input / output terminal 1 of the main body of the portable device having the above-described configuration is pushed up (moved in the direction of separating) by the auxiliary elastic member 12 such as the coil spring described above, and the input / output terminal 1 and the circuit unit terminal. 5 is separated, and at the same time, the washer-shaped conducting member 1-1 attached to the central portion of the input / output terminal 1 has a grounding means for contacting the grounding terminal 8 installed in the upper insulating member 2, Since the striped conductive member 1-1 has a switching function and is provided with a switching unit that switches to a ground circuit, static electricity that has entered from the input / output terminal 1 of the portable device main body is, as shown in the ground path, the conductive member 1-1. Through the ground terminal 8 to the ground portion 7.

An insulating member 13 also serving as a holding guide for the auxiliary elastic member is provided inside the auxiliary elastic member 12 such as a coil spring, and the input / output terminal 1 of the main body of the portable device caused by the bending deformation of the auxiliary elastic member. And circuit terminal 5
It is possible to prevent defective conduction between the input and output terminals and stabilize the vertical movement of the input / output terminal 1. When the auxiliary elastic member is a coil spring, the coil spring may be wrapped with an insulating member. Further, the auxiliary elastic member 12 may be conductive or non-conductive. Since the auxiliary conductive member 12 and the conductive portion of the circuit board 5 are insulated, even if static electricity enters from the outside, it does not affect electronic components such as the IC 4 on the circuit board 5. However, the auxiliary elastic member 1
If 2 is made non-conductive, the insulating member 13 becomes unnecessary, and the connecting portion between the circuit board 5 and the auxiliary elastic member 12 can be used as an effective area of the board.

(2) Second Embodiment FIGS. 3 and 4 show a second embodiment of the input / output terminal structure of a portable device according to the present invention. FIG. 3 is a cross-sectional view showing a state in which an external device is connected to the portable device main body by a connection means (not shown). FIG. 4 is a cross-sectional view showing a state when an external device is not connected.

In FIGS. 3 and 4, reference numeral 1 is a first input / output terminal made of a conductive material and provided in the through hole portion 2-1 of the insulating member 2, and 19 is provided inside the input / output terminal 1. An elastic member such as a coil spring that generates a force to move the second input / output terminal 20 that is vertically movable in the figure;
Reference numeral 3 is a circuit board as a circuit portion on which a circuit element such as IC 4 is mounted, 5 is a conductive material, and is a circuit portion terminal connected to the circuit board 3 by a lead wire 6 as a circuit conducting means, and 7 is a metal. A grounding part made of a conductive material, 8 is a grounding terminal made of a conductive member as grounding means, and 9 is an insulating member 1.
0 is a conductive input / output terminal arranged in the through hole portion 10-1, 11 is a rubber-like waterproof packing for preventing water from entering the main body, and 12 is fixed to the central portion of the input / output terminal 1. Elastic member as a switching means for moving the washer-shaped conductive member 1-1 in the vertical direction in the figure, 13 is an insulating member for holding the elastic member, 14 is an insulating support plate for supporting the circuit section terminal 5, 15 Is a mobile device body having an input / output terminal for an external device, and 16 is an external device having an input / output terminal.

The portable device main body 15 and the external device 16 are connected and held as in the first embodiment. The first input / output terminal 1 of the main body of the portable device is moved in the vertical direction in the drawing by an elastic member 12 such as a coil spring, and when the external device 16 is connected, the first input / output terminal 1 is pushed into the input / output terminal 9 of the external device and moved. At the same time, the washer-shaped conductive member 1-1 attached to the central portion of the first input / output terminal 1 separates from the earth terminal 8 installed on the upper insulating member 2 to interrupt the earth conduction circuit. After that, the tip of the second input / output terminal 20 disposed inside the first input / output terminal 1 is connected to the circuit portion terminal 5
And is conducted to the circuit board 3 on which the IC 4 is mounted through the conductor 6. By providing such circuit conducting means, conduction to the main body of the portable device becomes possible only when the external device is connected.

The second input / output terminal 20, even after being joined to the circuit section terminal 5 by the elastic member 19 such as a coil spring arranged inside the first input / output terminal 1, remains in the exterior part of the external device. By pushing it into the first input / output terminal 1 until it is joined to the main body of the mobile device, the above-mentioned dimensional variation in the longitudinal direction is absorbed, and the mobile device main body and the external device are in close contact with each other. Can be joined. Further, the electrostatic grounding route when connecting the external device is similar to that of the first embodiment.

Although the second input / output terminal 20 is described as an example in which the second input / output terminal 20 is inside the first input / output terminal 1, it goes without saying that the same function can be realized in the opposite case.

FIG. 4 shows a portable device body 15 according to the present invention.
It is sectional drawing which shows a 2nd Example when the external equipment 16 is not connected to.

The first input / output terminal 1 of the portable device having the above configuration
When the external device is not connected, is pushed up by the elastic member 12 such as the coil spring described above. At the same time 1st
The second input / output terminal 20 that has been pushed into the input / output terminal 1 also loses elasticity due to the expansion of the elastic member 19 and is separated from the circuit section terminal 5. Further, at the same time, the washer-shaped conducting member 1-1 attached to the central portion of the first input / output terminal 1 has a grounding means for contacting the grounding terminal 8 installed on the upper insulating member 2, Since the conductive member 1-1 has a switching function and is provided with a switching means for switching to a ground circuit, static electricity that has entered from the input / output terminal 1 of the portable device body is the same as in the first embodiment.
It flows through the conductive member 1-1, the earth terminal 8 and the earth portion 7.

(3) Third Embodiment FIGS. 5 and 6 show a third embodiment of the input / output terminal structure of a portable device according to the present invention.

FIG. 5 is a cross-sectional view showing a state in which an external device is connected to the portable device body by a connecting means (not shown). FIG. 6 is a cross-sectional view showing a state when an external device is not connected.

In FIGS. 5 and 6, 1 to 11 and 14 to 1
6 is the same as that of the above-mentioned first embodiment, and its explanation is omitted.
Reference numeral 21 denotes an elastic member such as a coil spring which is arranged on the outer peripheral portion of the input / output terminal 1 and moves the input / output terminal in the vertical direction in the drawing.

The portable device main body 15 and the external device 16 are connected and held as in the above-described embodiment. The input / output terminal 1 of the main body of the mobile device is configured to be movable in the vertical direction in the figure by an elastic member 21 such as a coil spring.
By the connection of, it is pushed into the input / output terminal 9 of the external device and moved. At the same time, the washer-shaped conductive member 1-1 attached to the central portion of the input / output terminal 1 is separated from the ground terminal 8 installed on the upper insulating member 2, and the ground conduction circuit is cut off. The tip of the input / output terminal 1 is brought into contact with the circuit part terminal 5 thereafter, and conducts through the conductor 6 to the circuit board 3 on which the IC is mounted. It is possible only when the device is connected. The main body device input / output terminal 1 pressed by the external device input / output terminal 9 is always dimensioned to be bonded to the circuit part terminal even if the external device exterior part is bonded to the mobile device body even if there is dimensional variation. And an elastic member 21 such as a coil spring disposed on the outer peripheral portion of the input / output terminal 1 with a dimensional variation in the longitudinal direction.
By being absorbed by, the portable device main body and the external device can be joined in a state of being in close contact with each other. Further, the electrostatic grounding route when connecting the external device is similar to that of the first embodiment.

FIG. 6 is a sectional view showing an embodiment when the external device 16 is not connected to the portable device main body 15 according to the present invention. The portable device input / output terminal 1 having the above-described configuration has the elastic member 21 such as the coil spring described above when an external device is not connected.
Is pushed up, and the input / output terminal 1 and the circuit section terminal 5 are separated from each other. At the same time, the washer-shaped conductive member 1-1 attached to the central portion of the input / output terminal 1 has a grounding means for contacting the ground terminal 8 installed on the upper insulating member 2, and the washer-shaped conductive member 1-1. Serves as a switch function and is provided with a switching means for switching to an earth circuit, so that static electricity that has entered from the input / output terminal 1 of the portable device body flows as shown by a dotted ground path.

[0037]

As described above, the input / output terminal structure of the portable device according to the present invention has the following effects.

According to the first aspect of the present invention, when the external device is not connected to the portable device body, the input / output terminal and the circuit section terminal are not joined, and the ground terminal is joined, so that static electricity is generated. Does not enter the circuit board. Therefore, the strength against static electricity (electrostatic resistance) can be improved. As a result, it is possible to prevent data protection, malfunction, and damage to portable devices.

Further, by providing an elastic member for moving the input / output terminals of the portable device main body, the processing of the input / output terminals of the portable device main body and the external device when the external device is connected is processed. The above dimensional variation can be absorbed. Therefore, the main body of the portable device and the external device can be tightly joined. As a result, it is possible to prevent gaps and conduction defects. Further, since an appropriate contact pressure is secured between the input / output terminal and the circuit terminal of the portable device body, chattering during vibration can be prevented.

According to the second aspect of the invention, the terminal itself for connecting the input / output terminal and the circuit board is made of a conductive elastic member, so that the structure of the input / output terminal itself and the configuration around the input / output terminal can be achieved. It can be simplified. This allows
Since the structure of the connecting portion between the input / output terminal of the external device and the input / output terminal of the portable device main body is simplified, the reliability of this connecting portion can be improved.

According to the third aspect of the invention, by providing the elastic member inside the input / output terminal on the main body side of the portable device, it is possible to further reduce the size of the input / output terminal.

According to the fourth aspect of the invention, the effective use region of the circuit board can be expanded by disposing the elastic member on the outer peripheral portion of the input / output terminal on the main body side of the portable device.
In addition, the manufacturing of the mobile device body can be facilitated and the cost can be further reduced.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a first embodiment when an external device is connected to a portable device body of the present invention.

FIG. 2 is a sectional view showing a first embodiment when an external device is not connected to the portable device body of the present invention.

FIG. 3 is a cross-sectional view showing a second embodiment when an external device is connected to the portable device body of the present invention.

FIG. 4 is a sectional view showing a second embodiment when an external device is not connected to the portable device body of the present invention.

FIG. 5 is a cross-sectional view showing a third embodiment when an external device is connected to the portable device body of the present invention.

FIG. 6 is a cross-sectional view showing a third embodiment when an external device is not connected to the portable device body of the present invention.

FIG. 7 is a diagram showing an example of a structure for preventing static electricity of an input / output terminal of a conventional portable device.

[Explanation of symbols]

 1, 9 Input / output terminal 1-1 Washer 2, 10, 13 Insulation member 3 Circuit board 4 IC 5 Circuit part terminal 6 Conductor 7 Ground part 8 Ground terminal 10-1 Through hole part 11 Waterproof packing 12 Auxiliary elastic member 14 Support Board 15 portable device main body 16 external device 17 earth path 19, 21 elastic member 20 second input / output terminal

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Ken Ohno 6-31-1, Kameido, Koto-ku, Tokyo Seiko Electronics Industry Co., Ltd.

Claims (4)

[Claims] 1. In an input / output terminal structure of a portable device, wherein a portable device main body and an external device are connected in a state of being in close contact with each other, an input / output terminal of the external device provided in the external device, and an input / output terminal of the external device. An input / output terminal on the side of the portable device body that is connected to the output terminal and is movable in a direction toward and away from the circuit board on the side of the portable device body; and for moving the input / output terminal on the side of the portable device body. An elastic member that generates a repulsive force; and a grounding unit that establishes electrical continuity between the input / output terminal on the portable device body side and the ground portion provided on the portable device body side when the external device is not connected. Characteristic portable device input / output terminal structure. 2. The elastic member is a conductive elastic member for input / output signal connection arranged between an input / output terminal on the portable device body side and a circuit board on the portable device body side, and the portable device. The input / output terminal structure for a portable device according to claim 1, wherein the input / output terminal structure of the portable device is configured by an auxiliary elastic member that generates a force for moving the input / output terminal on the main body side in a direction of separating from the circuit board. 3. The elastic member engages with the first input / output terminal on the portable device body side, which is slidable, and the first input / output terminal, and transmits an input / output signal to the portable device body side. The input / output terminal structure for a portable device according to claim 1, wherein the input / output terminal structure is arranged between the second input / output terminal and the second input / output terminal for transmitting to the circuit board. 4. The input / output terminal structure for a mobile device according to claim 1, wherein the elastic member is arranged on an outer peripheral portion of the input / output terminal on the main body side of the mobile device.