JP2002280134A - Adapter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an adapter usable in feeding commercial power to an information processing device such as a computer in which breakage of circuit elements or electronic parts inside the information processing device by static can be prevented in conducting maintenance work to the information processing device even when it is not provided with a terminal for earth connection. SOLUTION: This adapter usable in feeding commercial power to the information processing device comprises plural power supply terminals 11 and 12 and an earth terminal to be installed on a power supply receptacle for commercial power, and plural insertion holes 14 and 15 for receiving a plug of the information processing device. An earth connection part 2 connected to the earth terminal 13 to set a specified apparatus at the potential of the earth terminal 13 is formed at one outer end of an adapter main body 10. Favorably, display circuits 3 and 4 to display which phase of plural phases included in the commercial power is active.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to an adapter used when a commercial power supply (for example, an AC power supply for supplying an AC voltage of 100 V) is supplied to an information processing apparatus such as a computer. Generally, an information processing apparatus such as a computer used in an office or a factory has a two-terminal (2P) type or a three-terminal (3P) at the end of a power cord connected to a main body of the computer in order to obtain power from a power outlet of a commercial power supply. A terminal (3P) type plug is attached. On the other hand, a three-terminal power outlet is usually installed on the wall of an office or factory. In this three-terminal power outlet, a power supply terminal socket for supplying a power supply voltage (for example, an AC voltage of 100 V) of a commercial power supply and a ground terminal socket for supplying a ground potential (ground potential) are provided. Is provided.
In the power supply terminal socket described above, multiple phases of commercial power,
For example, two-phase commercial power is supplied.

More specifically, the present invention is applied to a case where a customer engineer (usually abbreviated as CE (customer engineer)) performs maintenance work of an information processing apparatus or the like from a three-terminal type power outlet. The present invention relates to an adapter having a power terminal and a ground terminal inserted into the above-mentioned three-terminal power outlet to supply power to the power supply, and a plurality of insertion holes for receiving an insertion plug of the information processing device. .

[0003]

2. Description of the Related Art As a conventional type adapter used for supplying power from a power outlet to an information processing apparatus during maintenance work by a customer engineer, Japanese Patent Application Laid-Open No. 1-25 is disclosed.
Various shapes of adapters such as those described in Japanese Patent Publication No. 1570 are disclosed. Here, in particular, FIG. 8 shows an adapter of a type used when supplying power from a three-terminal power outlet to an information processing apparatus having a two-terminal plug. The adapter 100 shown in FIG.
It almost corresponds to the adapter disclosed in FIG. 6 of JP-A-1-251570.

[0004] In FIG. 8, the adapter body 110 of the adapter 100 is provided with flat-type power terminals 111 and 112 whose tip portions are exposed, and a ground terminal 113 whose tip portion is also exposed. When the adapter 100 is attached to a three-terminal power outlet (not shown), the flat power terminals 111 and 112 contact the power terminal socket of the power outlet, and the ground terminal 113 Contact the socket for the earth terminal of the outlet.

Further, insertion holes 114, 1 for inserting two terminals (not shown here) of an insertion plug attached to the information processing apparatus are provided in the adapter body 110.
15 are formed. These insertion holes 114, 115
Has a function of guiding the two terminals of the inserted plug into contact with the flat power terminals 111 and 112, respectively.

Further, the adapter body 110 is provided with a ground wire 116 connected to a ground terminal 113. A U-shaped fixture 117 is attached to the tip of the ground wire 116. Adapter 1 as above
When the maintenance work of an information processing apparatus such as a computer is performed by using the power supply terminal 00, first, the adapter 100 is attached to a three-terminal power outlet so that the power supply terminals 111 and 112 and the ground terminal 113 of the adapter are connected to the power supply. Electrically connect to the socket for the power terminal and the socket for the ground terminal of the outlet.

Next, the terminals of the insertion plug attached to the information processing device are inserted into the insertion holes 114, 1 and 1 of the adapter 100.
15, the terminals of the plug of the information processing apparatus are connected to the power terminals 111, 1 of the adapter 100.
12 electrically. With this configuration, the information processing device is connected to the three-terminal power outlet via the adapter 100, and power is supplied to the information processing device from the three-terminal power outlet. The maintenance work of the information processing apparatus can be easily performed.

[0008]

In performing the above-mentioned maintenance work of the information processing apparatus, a customer engineer sets a wrist strap set (discussed later in FIG. 7) for discharging static electricity accumulated in the human body to the ground. ) Is pre-defined. This wrist strap set includes a wrist band attached to the wrist of the customer engineer, a wrist strap cord connected to the wrist band, and clips such as crocodile clips and bulldog clips attached to the end of the wrist strap cord. It consists of. By using the wrist strap set having such a configuration and discharging static electricity accumulated in the human body to the ground, circuit elements, electronic components, and the like in the information processing device are prevented from being destroyed. .

When the information processing apparatus to be maintained is a large-sized computer such as an office processor, a ground connection terminal for setting the computer housing or the like to the ground potential is usually provided. Have been. In this case, by clamping the ground connection terminal with the clip of the wrist strap set, static electricity accumulated in the human body can be released to the ground.

However, a portable notebook personal computer (usually abbreviated as a notebook personal computer) is not usually provided with the above-described ground connection terminal. For this reason, the wrist strap set itself cannot be kept at the ground potential, and it is difficult to discharge static electricity accumulated in the human body to the ground. Therefore, when performing maintenance work on an information processing device such as a laptop personal computer that does not have a ground connection terminal, circuit elements and electronic components in the information processing device are destroyed by static electricity accumulated in the human body. Problem occurs.

In the above-described adapter 100 shown in FIG. 8, a fixing member 117 is attached to the tip of the ground wire 116, and the fixing member 117 is clamped by a clip of the wrist strap set to thereby fix the wrist strap set. The clip can also be connected to ground. However, since the fixing bracket 117 is not originally manufactured in consideration of being clamped by a clip or the like, the clip of the wrist strap set and the fixing bracket 1 are not provided.
The electrical contact with 17 is not assured. It is therefore difficult to keep the wrist strap set clips at ground potential during maintenance operations. As a result, the above-mentioned problem still remains.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and is intended to be stored in a human body when a maintenance work is performed on an information processing apparatus such as a notebook personal computer which is not provided with a terminal for ground connection. It is an object of the present invention to provide an adapter capable of preventing a circuit element, an electronic component, and the like in an information processing apparatus from being damaged by static electricity.

[0013]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a plurality of power terminals and a ground terminal which are mounted on a power outlet of a commercial power supply, and a plug for receiving an insertion plug of an information processing apparatus. An adapter having a plurality of insertion holes and used when supplying the commercial power supply to the information processing device, the adapter being connected to the ground terminal and setting a predetermined appliance to a potential of the ground terminal. And an earth connection portion formed at one end outside the adapter body.

Preferably, in the adapter according to the present invention, any one of a plurality of phases included in the commercial power supply is in an active state in the adapter body (for example, between the power supply terminal and the ground terminal). Is displayed. Still preferably, in the adapter according to the present invention, the adapter body (for example, between the ground terminal and the ground connection portion) indicates whether or not the ground terminal and the ground connection portion are in a conductive state. A display circuit is provided.

[0015] Further, preferably, the predetermined instrument is
A wrist strap set used when performing maintenance of the information processing device. The wrist strap set is attached to the ground connection portion, and the information is obtained by inserting the insertion plug of the information processing device into the insertion hole. Maintenance of the processing device is performed. In summary, in the present invention, a ground connection portion connected to the ground terminal of the adapter is formed at one end on the outside of the adapter body, and a predetermined device such as a wrist strap set is connected to the ground connection portion to connect the ground. It is possible to easily guarantee the potential.

Therefore, according to the present invention, when performing a maintenance work on an information processing apparatus such as a notebook personal computer which does not have a ground connection terminal, the maintenance work is performed via the wrist strap set and the ground connection section. Since the static electricity accumulated in the human body can be released to the ground, it is possible to prevent circuit elements, electronic components, and the like in the information processing device from being destroyed by the static electricity.

Further, according to the present invention, which of the plurality of phases included in the commercial power supply is in an active state is indicated by a light emitting diode or the like, so that each of the plurality of phases is an active phase. Alternatively, it is possible to easily determine whether the phase is the inactive phase and to easily determine whether the ground connection is maintained at the ground potential. Still further, according to the present invention, it is possible to easily detect an abnormality in the supplied power supply voltage by indicating that a potential difference has occurred between the ground terminal of the adapter and the ground connection portion. .

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The construction and operation of a preferred embodiment of the present invention will be described below with reference to the accompanying drawings (FIGS. 1 to 8). FIG. 1 is a front view showing the adapter according to the first embodiment of the present invention, and FIG. 2 is a perspective view showing the adapter according to the first embodiment of the present invention. Here, an external view of the adapter according to the first embodiment of the present invention is shown.

As shown in FIGS. 1 and 2, on one surface of the adapter body 10 of the adapter 1 according to the first embodiment, flat power supply terminals 11 and 12 having exposed end portions are provided.
And a ground terminal 13 whose tip is also exposed. On the other hand, a power outlet of a commercial power supply such as a three-terminal power outlet (not shown) has a power terminal for supplying a power voltage of a plurality of phases (for example, two phases). A socket and a socket for a ground terminal for supplying a ground potential (ground potential) are provided. When the adapter 1 is mounted on a three-terminal power outlet, the power terminals 11 and 12 of the adapter 1 come into contact with the power terminal socket of the power outlet, and the ground terminal 13 of the adapter 1 is connected to the ground of the power outlet. Contact the terminal socket.

Further, as shown in FIG. 2, the other surface of the adapter main body 10 has an insertion hole 14 into which two terminals (not shown) of an insertion plug attached to the information processing apparatus are inserted. , 15 are formed. When the two terminals of the plug are inserted, these two terminals are connected to the power supply terminals 11 and 1.
2 has a function of guiding them to contact each other.
Attach the adapter 1 to the power outlet and connect the terminal of the plug of the information processing device to the insertion hole 1 of the adapter 1.
Power is supplied to the information processing apparatus from a three-terminal power outlet by inserting the power supply into the information processing apparatus.

Further, at one end on the outside of the adapter body 10, a ground connection portion 2 electrically connected to a ground terminal 13 is formed as means for providing a ground potential. Preferably, the ground connection portion 2 has a shape with the tip end exposed like the ground terminal 13 and is formed on a surface different from the surface on which the power terminals 11, 12 and the ground terminal 13 are formed. Is done.

When the adapter 1 having the above-described ground connection 2 is used to perform maintenance work on an information processing apparatus having no ground connection terminal, such as a notebook personal computer, By clamping the clip at the tip of the wrist strap set to the ground connection part 2, the wrist strap set itself can be maintained at the ground potential. In this case, the static electricity accumulated in the human body can be reliably released to the ground via the wrist strap set and the ground connection part 2, and the static electricity destroys circuit elements and electronic components in the information processing apparatus. This can be easily prevented from being performed.

The above-mentioned ground connection part 2 is used to set not only a wrist strap set used for maintenance work of the information processing apparatus but also any other equipment required to guarantee the ground potential to the ground potential. Note that it can be set. FIG. 3 is a front view showing the internal circuit configuration of the adapter according to the second embodiment of the present invention. Hereinafter, the same components as those described above will be denoted by the same reference numerals.

As shown in FIG. 3, an adapter 1 according to a second embodiment of the present invention has a ground connection portion 2 similar to that of the above-described second embodiment formed at one end on the outside of an adapter main body 10. , A plurality of phases (for example, two phases) included in the commercial power supply between the power terminals 11 and 12 and the ground terminal 13.
A display circuit is provided for displaying which phase is in the active state. For example, when a commercial power supply having two phases is supplied from a three-terminal power outlet, the commercial power supply corresponding to any one of the two phases is activated and any one of the power terminal sockets is activated. It will be supplied from one side.

More specifically, as the above-mentioned display circuit, between one power supply terminal 11 and the ground terminal 13 is provided.
A first display circuit 3 is provided for indicating that a first phase of the two phases included in the commercial power supply is in an active state, and a second phase is provided between the other power supply terminal 12 and the ground terminal 13. Is provided with a second display circuit 4 which indicates that the device is in an active state. These first and second display circuits 3, 4
Indicates that the first phase or the second phase of the commercial power supply is in an active state by a light emitting diode, a neon tube, or the like.

In the first display circuit 3, it is displayed that the first phase of the commercial power supply is in the active state, and in the second display circuit 4, the second phase of the commercial power supply is in the inactive state. Is displayed, the power supply voltage of the first phase is supplied to the information processing device or the like. Meanwhile, the first
In the display circuit 3, it is displayed that the first phase of the commercial power supply is in an inactive state, and in the second display circuit 4,
When it is indicated that the second phase of the commercial power supply is in the active state, the power supply voltage of the second phase is supplied to the information processing device or the like.

Further, when both the first display circuit 3 and the second display circuit 4 indicate that the commercial power supply is in an inactive state, if the ground terminal 2 is not properly contacted, etc. Is not maintained at the ground potential. In this case, the first display circuit 3 and the second display circuit 4 function as monitors for confirming whether or not the ground connection 2 is maintained at the ground potential.

On the other hand, the first display circuit 3 and the second display circuit 3
If both of the display circuits 4 indicate that the commercial power supply is in the active state, it is possible that an abnormality has occurred in the power supply system. In this case, by checking the power supply system before inserting the terminal of the insertion plug of the information processing device into the insertion holes 14 and 15 of the adapter 1, it is possible to destroy circuit elements and electronic components in the information processing device. Is prevented.

In the second embodiment, which of the plurality of phases included in the commercial power supply is in an active state is indicated by a light emitting diode, a neon tube, or the like, so that each of the plurality of phases is an active phase. Or the inactive phase can be easily determined. Further, it is possible to easily determine whether or not the ground connection portion 2 is maintained at the ground potential, and it is also possible to easily detect that an abnormality has occurred in the power supply system.

FIG. 4 is a circuit diagram showing a specific example of the display circuit of FIG. Here, a specific display circuit for displaying which of two phases (a first phase and a second phase) of a commercial power supply is in an active state using a light emitting diode is illustrated. As shown in FIG. 4, the first display circuit 3
A first light-emitting diode 24 indicating that the first phase supplied from the first power supply terminal 11 is in an active state, and a first light-emitting diode 24 based on the power supply voltage of the first phase.
And a first drive voltage generation circuit 21 for generating a drive voltage necessary for driving the first drive voltage. Further, a protection resistor 23 for adjusting the current of the first light emitting diode 24 to prevent an excessive current from flowing through the first light emitting diode 24 is inserted in series with the first light emitting diode 24. ing.

On the other hand, the second display circuit 4 includes a second light emitting diode 26 for displaying that the second phase supplied from the second power supply terminal 12 is in an active state, and a second phase display circuit. And a second drive voltage generation circuit 22 that generates a drive voltage required to drive the second light emitting diode 26 based on the power supply voltage of the second drive voltage. Further, the current of the second light emitting diode 26 is adjusted to adjust the current of the second light emitting diode 26.
Protection resistor 25 for preventing excessive current from flowing through
Are inserted in series into the second light emitting diode 26.

By confirming that the first light emitting diode 24 in the first display circuit is on and the second light emitting diode 26 in the second display circuit is not on, the commercial power supply It can be easily identified that the first phase is in the active state. On the other hand, the first light emitting diode 24 is not turned on and the second light emitting diode 2
By confirming that 6 is lit, it can be easily identified that the second phase of the commercial power supply is in the active state.

Further, by confirming that neither the first light emitting diode 24 nor the second light emitting diode 26 is turned on, the ground connection portion 2 becomes in a state where it is not maintained at the ground potential. Can be easily identified. On the other hand, by confirming that both the first light emitting diode 24 and the second light emitting diode 26 are turned on, it is possible to easily identify that an abnormality has occurred in the power supply system.

Here, the function of indicating which of the two phases of the commercial power supply is active is realized by using a light emitting diode, but a neon tube may be used instead of the light emitting diode. , It is possible to realize the same function. FIG. 5 is a front view showing the internal circuit configuration of the adapter according to the third embodiment of the present invention.

As shown in FIG. 5, an adapter 1 according to a third embodiment of the present invention has a ground connection portion 2 similar to that of the above-described second embodiment formed at one end on the outside of an adapter main body 10. A third display circuit 3 which is a display circuit for displaying whether or not the ground terminal 13 and the ground connection portion 2 are in a conductive state between the ground terminal 13 and the ground connection portion 2.
0 is provided.

The third display circuit 30 is constituted by a circuit including a protective resistor and a light emitting diode (or neon tube), and a potential difference is generated between the ground terminal 13 and the ground connection terminal 2. Is displayed by a light emitting diode (or neon tube). The specific circuit configuration of the third display circuit 30 is based on the first and second display circuits described above.
Since it is almost the same as the display circuit (see FIG. 4),
Illustration of the specific circuit configuration is omitted.

In the third display circuit 30, when the light emitting diode (or neon tube) is not lit, no potential difference occurs between the ground terminal 13 and the ground connection part 2, that is, the ground connection. This indicates that the section 2 is securely connected to the ground terminal 13. On the other hand, a light emitting diode (or neon tube)
Is lit, it indicates that an abnormality has occurred in the supplied power supply voltage and a potential difference has occurred between the ground terminal 13 and the ground connection portion 2.

In the third embodiment, the fact that a potential difference is generated between the ground terminal 13 and the ground connection terminal 2 of the adapter 1 is indicated by a light emitting diode or the like, so that the plug of the information processing apparatus can be inserted. Terminal 1 for adapter
It is possible to easily detect an abnormality in the power supply voltage before the power supply voltage is inserted into the insertion holes 14 and 15. Therefore, breakage of circuit elements, electronic components, and the like in the information processing device is prevented.

When the ground terminal 13 is not used as a terminal for supplying a ground potential, the ground connection portion 2 can be used as a power terminal of a general adapter. FIG. 6 is a schematic diagram showing a state in which the information processing apparatus is maintained using the adapter of the present invention, and FIG. 7 is a diagram showing an example of the wrist strap set in FIG.

As shown in FIG. 6, when the adapter 1 of the present invention is used to perform maintenance work on an information processing device such as a notebook personal computer 6 or a large computer 7,
First, the customer engineer CE attaches the adapter 1 to the three-terminal type power outlet 8, thereby connecting the power terminals 11, 12 and the ground terminal 13 of the adapter to the power terminal socket and the ground terminal socket of the power outlet. Make an electrical connection.

In the notebook personal computer 6,
A power cord is drawn out of the power supply unit 60, and a two-terminal or three-terminal plug 61 is attached to the end of the power cord. On the other hand, in the large-sized computer 7, a power cord is drawn out from the power supply unit 70, and a two-terminal or three-terminal plug 71 is attached to the end of the power cord. Furthermore, the large-sized computer 7 is usually provided with a ground connection terminal 72 for setting the computer housing to the ground potential. On the other hand, the notebook personal computer 6 is not provided with the ground connection terminal as described above.

Next, when the maintenance work is performed on the notebook personal computer 6, the customer engineer CE puts on the wristband 50 attached to his / her own wrist.
A clip 56 (see FIG. 7 described later) of the wrist strap set 5 including the (see FIG. 7 described later) is attached to the ground connection portion 2 of the adapter 1. On the other hand, when the maintenance work is performed on the large computer 7, the tip of the wrist strap set 5 is attached to the ground connection terminal 72 of the computer 7. In general, when performing maintenance work on an information processing apparatus such as a notebook personal computer 6 or a large-sized computer 7, use of the wrist strap set 5 is prescribed in advance. By discharging the static electricity accumulated in the human body to the ground via the wrist strap set 5, the circuit elements and electronic components in the notebook personal computer 6 or the large computer 7 are prevented from being destroyed. I have.

Further, the customer engineer CE operates the terminal of the plug 61 of the notebook personal computer 6 or the plug 71 of the large computer 7.
By inserting these terminals into the insertion holes 14 and 15 of the adapter 1, the terminals of the plugs of the notebook personal computer 6 and the large computer 7 are electrically connected to the power terminals 11 and 12 of the adapter 1.

In this way, an information processing device such as a notebook personal computer 6 or a large-sized computer 7 is connected to the three-terminal power outlet 8 via the adapter 1. Power is supplied to the information processing device. At this point, the static electricity accumulated in the human body is removed from the wrist strap set 5
And via the ground connection 2 (or the ground connection terminal 72) of the adapter 1 to the ground,
The customer engineer CE can safely and reliably perform maintenance work without destroying circuit elements, electronic components, and the like in the information processing device.

FIG. 7 shows an example of the wrist strap set 5 used during the maintenance work of the information processing apparatus as described above. The wrist strap set 5 includes a wrist band 50 made of a conductive material to be attached to the wrist of the customer engineer CE, a wrist strap cord 52 connected to the wrist band 50, and a tip of the wrist strap cord 50. And a clip 56 such as a crocodile clip or a bulldog clip attached to the camera.

More specifically, at one end of the wrist strap cord 52, a resistance portion 53 having a predetermined electric resistance is formed. The resistance portion 53 is attached to and electrically connected to the wrist wrap cord connection portion 51 of the wristband 50. Further, the main body portion of the wrist strap cord 52 is constituted by a coil cord portion 54 which can be extended up to about 3000 mm. Further, a terminal plug 55 is formed at the other end of the wrist strap cord 52.

The terminal plug section 55 is preferably constituted by a banana plug. The terminal plug 55 includes a clip 5 such as a crocodile clip or a bulldog clip.
6 is mounted. By holding the ground connection portion 2 (or the ground connection terminal 72) of the adapter 1 with the clip 56, the wrist strap cord 52 and the ground connection portion 2 (or the ground connection terminal 72) of the adapter 1 are connected. It is possible to easily discharge the static electricity accumulated in the human body to the ground via the ground.

(Supplementary Note 1) The power supply terminal has a plurality of power terminals and a ground terminal attached to a power outlet of a commercial power supply, and a plurality of insertion holes for receiving an insertion plug of an information processing device. In an adapter used when supplying to the processing device, an earth connection portion connected to the earth terminal and for setting a predetermined appliance to the potential of the earth terminal is formed at one end outside the adapter body. And adapter.

(Supplementary note 2) The adapter according to Supplementary note 1, wherein the adapter main body is provided with a display circuit for displaying which of a plurality of phases included in the commercial power supply is in an active state. (Supplementary note 3) The adapter according to supplementary note 1, wherein a display circuit is provided on the adapter body to indicate whether or not the ground terminal and the ground connection portion are in a conductive state.

(Supplementary Note 4) The predetermined appliance is a wrist strap set used for performing maintenance of the information processing apparatus. The wrist strap set is attached to the ground connection portion, and Supplementary notes 1 to 3, wherein maintenance of the information processing apparatus is performed by inserting an insertion plug into the insertion hole.
An adapter according to any one of the preceding claims.

[0051]

As described above, according to the present invention,
Since the ground connection part connected to the ground terminal of the adapter is formed at one end on the outside of the adapter body, it is easy to guarantee the ground potential when a wrist strap set or the like is connected to the ground connection part. become. Therefore, when a maintenance work is performed on an information processing apparatus such as a notebook personal computer that does not have a terminal for ground connection, the information is accumulated in the human body via the wrist strap set and the ground connection section. Since the static electricity can be released to the ground, it is possible to prevent circuit elements, electronic components, and the like in the information processing device from being destroyed by the static electricity.

Further, according to the present invention, which of the plurality of phases included in the commercial power supply is in an active state is indicated by a light emitting diode or the like, so that each of the plurality of phases is an active phase. Alternatively, it is possible to easily determine whether the phase is the inactive phase and to easily determine whether the ground connection is maintained at the ground potential. Furthermore, according to the present invention, it is possible to easily detect an abnormality in the supplied power supply voltage by indicating that a potential difference has occurred between the ground terminal and the ground connection terminal of the adapter. .

Further, according to the present invention, when the ground terminal of the adapter is not used as a terminal for supplying a ground potential, the ground connection portion can be used as a power terminal of a general adapter. It is.

[Brief description of the drawings]

FIG. 1 is a front view showing an adapter according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing an adapter according to the first embodiment of the present invention.

FIG. 3 is a front view showing an internal circuit configuration of an adapter according to a second embodiment of the present invention.

FIG. 4 is a circuit diagram showing a specific example of the display circuit of FIG. 3;

FIG. 5 is a front view showing an internal circuit configuration of an adapter according to a third embodiment of the present invention.

FIG. 6 is a schematic diagram illustrating a state where maintenance of the information processing apparatus is performed using the adapter of the present invention.

FIG. 7 is a diagram showing an example of the wrist strap set of FIG.

FIG. 8 is a perspective view showing an example of a conventional adapter.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Adapter 2 ... Ground connection part 3 ... 1st display circuit 4 ... 2nd display circuit 5 ... Wrist strap set 6 ... Notebook type personal computer 7 ... Computer 8 ... Power outlet 10 ... Adapter main body 11 ... 1st power supply Terminal 12: Second power terminal 13: Ground terminal 14: First insertion hole 15: Second insertion hole 21: First drive voltage generation circuit 22: Second drive voltage generation circuit 24: First light emission Diode 26 Second light emitting diode 30 Third display circuit 50 Wrist band 52 Wrist strap cord 56 Clip

Continued on the front page (51) Int.Cl. ⁷ Identification code FI Theme coat II (Reference) H01R 13/652 H01R 13/652 13/717 13/717 F term (Reference) 2G014 AA02 AA12 AB29 AC03 AC15 AC19 2G035 AA21 AB08 AC13 AD10 AD33 AD39 5E021 FA03 FA20 FB14 FB21 KA11 LA02 MA03 MA06

Claims (3)

[Claims] A plurality of power supply terminals and a ground terminal attached to a power outlet of a commercial power supply, and a plurality of insertion holes for receiving an insertion plug of the information processing apparatus;
An adapter used for supplying the commercial power supply to the information processing apparatus, an earth end connected to the earth terminal and configured to set a predetermined appliance to a potential of the earth terminal at one end outside the adapter body; An adapter characterized by being formed in. 2. The adapter according to claim 1, wherein the adapter main body is provided with a display circuit for displaying which of a plurality of phases included in the commercial power supply is in an active state. 3. The wrist strap set used when performing maintenance of the information processing device, wherein the predetermined appliance is;
The maintenance of the information processing device is performed by attaching the wrist strap set to the ground connection portion and inserting the insertion plug of the information processing device into the insertion hole. Adapter.