JPH0833337A - Power supply unit, cord unit, power supply adapter and electronic apparatus - Google Patents

Abstract

PURPOSE:To realize an easy-to-handle power supply adapter applicable to various types of apparatus. CONSTITUTION:The power supply unit 1 has a plurality of terminals outputting different voltages and the terminals are selected depending on the voltage input terminal of a cord unit 20. The cord unit is replaced depending on the input power supply voltage of an apparatus to be used.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power supply adapter, a power supply unit and a cord unit constituting the power supply adapter, and an electronic device which can be used corresponding to the power supply unit.

[0002]

2. Description of the Related Art In an electronic device equipped with a DC power input terminal, a commercial AC power outlet (AC100V) is provided by connecting an AC adapter to the DC power input terminal.
Can be used by connecting to. That is, the AC adapter performs AC / DC conversion to obtain a DC voltage according to the DC input voltage value of the connected electronic device.

[0003]

By the way, if the number of devices using the AC adapter increases, as shown in FIG. 15, many AC adapters 50 will be octopus-wired to the outlet.

Normally, the AC adapter 50 has a form in which a plug is directly formed from the housing portion and the housing portion is plugged into an outlet, so if a large number of connections are made, a wide space around the outlet is required and it is a great obstacle to daily life. Will end up. Furthermore, the appearance is unsightly. Also, since the AC adapter 50 is dedicated to each electronic device and cannot support other devices, it has been used until then, for example, when a new device is purchased.
The C adapter 50 is useless because it becomes unnecessary.
Furthermore, when it is not in use, it has the drawback that it is difficult to organize the code, which is annoying or unsightly.

[0005]

In view of these problems, the present invention provides a novel power supply adapter, a power supply unit and a cord unit constituting the new power supply adapter, and an electronic device that can be used corresponding to the power supply unit. With the goal.

The power supply unit includes a power supply input means,
A plurality of output parts are generated from one or a plurality of mounting parts, a plurality of terminals formed in the mounting parts, and an input voltage input from the power supply input means, and each output voltage is output to a predetermined value at each of the plurality of terminals. And a voltage converter means for supplying between the terminals.

Here, two terminals of the plurality of terminals are selectively connected and appear between the two terminals depending on the position of the power input terminal formed on the mounted body mounted on the mounting portion. The voltage is configured to be supplied to the mounted body.

Further, as the cord unit, a voltage input terminal formable range is set in the housing, and a pair of voltage input terminals whose positions are set within the voltage input terminal formable range according to the voltage to be output are formed. Therefore, the voltage between the pair of voltage input terminals is configured to be the output voltage from the output terminal provided via the cord portion.

Here, the voltage input terminal formable range in the housing is such that a mounting portion having a plurality of terminals is formed, a plurality of output voltages are generated from the input voltage, and each output voltage is set to a predetermined value at each of the plurality of terminals. With respect to the power supply unit configured to be supplied between the terminals, when the housing section is mounted on the mounting section, the position is set to correspond to the plurality of terminals in the mounting section.

Further, in this cord unit, the cord portion can be wound inside the housing portion.

The power supply unit and the cord unit constitute a power supply adapter. That is, the housing of the cord unit is mounted on the mounting portion of the power supply unit, and the voltage appearing between the pair of terminals of the power supply unit selectively connected by the pair of voltage input terminals of the cord unit is
The output voltage from the output terminal of the cord unit is used.

Further, as an electronic device which can be used corresponding to the power supply unit, a voltage input terminal formable range is set in the housing, and a position is set within the voltage input terminal formable range according to the voltage to be input. A pair of voltage input terminals is formed, and a voltage between the pair of voltage input terminals is input as an operating voltage.

[0013]

[Function] If the power supply unit can output various different voltages among the plurality of terminals and the terminal connected by the voltage input terminal of the cord unit is selected, the input voltage of the electronic device to be used can be changed. The cord unit to be attached can be replaced and used accordingly. For electronic devices that can be used while attached to the power supply unit,
If the positions of the pair of voltage input terminals are set according to the input power supply voltage, the operating power supply can be obtained by mounting the power supply unit.

[0014]

EXAMPLES Various examples of the present invention will be described below.
FIG. 1 is a perspective view of a power supply unit of the embodiment. Reference numeral 1 indicates the entire power supply unit. This power supply unit 1 can be connected by connecting the outlet plug 2 to a commercial AC power outlet.
A voltage of C100V is input.

Reference numeral 3 indicates a mounting portion. The power supply unit 1 is formed with three mounting portions 3 to which a cord unit and an electronic device described later can be mounted respectively. A terminal portion 4 is formed inside each mounting portion 3. In the terminal portion 4, 6a to 6i are provided at positions partitioned by the partition plate 5.
9 terminals are shown. The terminal portion 4 is shown in FIG.
Enlarged to show. In this embodiment, as shown in the figure, the terminal 6a is a terminal for DC3V, the terminal 6b is a terminal for DC4.5V,
It is assumed that the terminal 6c is set as a DC 6V terminal, the terminal 6d is set as a DC 9V terminal, and the terminal 6e is set as a ground terminal.

Further, as shown in FIG. 1, a spring contact switch 7 is formed on the bottom surface of each mounting portion 3. When a cord unit or an electronic device to be described later is mounted on the mounting portion 3, the spring contact switch 7 is pressed, whereby the terminals 6a-6
It is configured such that a predetermined voltage is supplied to i.

The internal structure of the power supply unit 1 will be described with reference to FIG. Reference numeral 8 denotes an AC / DC converter, which is provided in three units corresponding to each mounting portion 3. AC 100V is input by connecting the outlet plug 2 to a commercial AC outlet. This AC voltage is supplied to each AC / DC converter 8 via the spring contact switch 7.

Each AC / DC converter 8 has an A
DC voltage outputs of various voltage values are obtained from C100V and are supplied to the terminals 6a to 6e in each terminal portion 4. That is AC / D
C conversion is performed and DC3 is applied between terminals 6a-6e.
V, DC between the terminals 6b-6e is 4.5V, DC between the terminals 6c-6e is DC6V, and between the terminals 6d-6e is DC9V.

FIG. 3 is a perspective view of the cord unit of this embodiment. Reference numeral 20 denotes the entire code unit. The lower part of the cord unit 20 has a shape and size suitable for mounting on the mounting portion 3 of the power supply unit 1.

Reference numeral 21 is an output terminal, and 22 is a cord. The cord 22 can be stored inside the cord unit 20 while being wound on a cord reel, and can be pulled out by rotating the cord reel. Reference numeral 23 is a reel base connected to the internal cord reel, and 24 is an operation unit. By inserting a finger into the operation portion 24 and rotating the reel stand portion 23, the cord reel is rotated, and the cord 22 can be wound inside the cord unit 1.

A terminal portion 25 is formed on the reel base portion 23. The terminal portion 25 is provided with nine contact bodies S. When the cord unit 20 is mounted on the mounting portion 3 of the power supply unit 1, each of the contact bodies S has a terminal 6 respectively.
It is formed as a position to come into contact with a to 6i. Then, two of the nine contact bodies S are voltage input terminals 26 formed of, for example, brass or nickel plating,
It is said to be 26. The other seven contact bodies are made of an insulating material such as resin. As shown in FIG. 6, in the cord unit 20, the voltage input terminals 26 and 26 are connected to the cord 2.
The voltage input from the voltage input terminals 26 and 26 appears at the output terminal 21.

In this embodiment, as the structure of the terminal portion 4, four types shown in FIGS. 4 (a) to 4 (d) can be considered. The terminal portion 20 of the cord unit 20 shown in FIG. 3 is of the type shown in FIG. 4A, which means that when the cord unit 20 is mounted on the mounting portion 3 of the power supply unit 1, the voltage input terminals 26, 26 become terminals. It comes into contact with 6b and 6e.
When the cord unit 20 is mounted and the spring contact switch 7 is turned on as described above, a voltage of DC 4.5V appears between the terminals 6b and 6e in the mounting portion 3, so that the cord unit 20 is Voltage input terminals 26, 2
A voltage of DC 4.5V is input from 6, and a voltage of DC 4.5V is output from the output terminal 21 via the cord 22.

On the other hand, when the terminal portion 25 of the cord unit 20 is of the type shown in FIG. 4 (b), when it is mounted on the power supply unit 1, the voltage input terminals 26, 26 are connected to the terminals 6a and 6a.
It comes into contact with e. Therefore, the voltage input terminals 26, 2
The voltage of DC3V is input from 6 and the voltage of DC3V is output from the output terminal 21 via the cord 22.

If the terminal portion 25 of the cord unit 20 is of the type shown in FIG. 4 (c), when it is mounted on the power supply unit 1, the voltage input terminals 26, 26 have the voltage input terminals 26, 26.
It comes into contact with e. Therefore, the voltage input terminals 26, 2
The voltage of 6V DC is input from 6 and the voltage of 6V DC is output from the output terminal 21 via the cord 22.

Further, the terminal portion 25 of the cord unit 20
Is the type of FIG. 4 (d), the power supply unit 1
Then, the voltage input terminals 26, 26 come into contact with the terminals 6d and 6e. Therefore, the voltage input terminal 26,
The voltage of DC 9V is input from 26, and the voltage of DC 9V is output from the output terminal 21 via the cord 22.

That is, in this embodiment, the code unit 2
There are four types of 0, and the code unit 20 may be used properly according to the DC input voltage of the electronic device used.

FIG. 7 shows an example of use. In this case, the cord units 3 are respectively attached to the three mounting portions 3 of the power supply unit 20.
The terminal portion 25 of one of the three cord units 20 is attached to the type shown in FIG.
It is assumed that the terminal portion 25 is of the type shown in FIG. 4B, and that the terminal portion 25 is of the type shown in FIG. 4C. Then
As shown, the output terminal 21 of each cord unit 20
Output voltage is 4.5V, 3V and 6V respectively. In other words, each of the three electronic devices you want to use is D
This is an example of use when the C input voltage is 4.5V, 3V, and 6V, and each electronic device is connected to the output terminal 21 from which the corresponding input voltage is obtained.

By thus constructing the power adapter with the power unit 1 and the cord unit 20, it is not necessary to wire the AC adapter 50 to a commercial outlet as shown in FIG. 15, and the DC of the electronic equipment used. Since the cord unit 20 only needs to be replaced according to the input voltage, useless adapters do not occur. Further, there is also an advantage that the appearance is neat.

As for the cord unit 20 which is not used, the cord 22 can be wound around the cord reel inside the cord unit 20, so that the cord does not easily get in the way.

When the cord unit 20 is not attached to the attaching portion 3, the terminal portion 4 of the power supply unit 1 is exposed. At this time, the spring contact switch 7 is off and the terminals 6a to 6i. Is not energized, so there is no danger.

By the way, the cord unit 2 of this embodiment
In the case of 0, the terminal portion 2 when mounted on the power supply unit 1
The reel stand portion 23 cannot be rotated because 5 is engaged with the terminal portion 4. That is, the cord 22 cannot be pulled out or wound up in the attached state. Therefore, the cord 22 is pulled out so as to have a required length before mounting.

However, when the reel base 23 is mounted on the mounting part 3, the position of the terminal part 25 is as shown in FIG.
(A) and (d) must be set. That is, when the cord 22 is pulled out or wound up, the reel base portion 23 is rotated as shown in FIGS. 5A, 5B, 5C, and 5D, but as shown in FIGS. In such a state, the terminal portion 25 is not in a position corresponding to the terminal portion 4 of the mounting portion 3, and the terminal portion 25 and the terminal portion 4 cannot be engaged with each other or the cord unit 20 cannot be mounted.

Therefore, in the rotation operation of the reel base portion 23, a structure is provided so that a click can be obtained at the rotation position where the terminal portion 25 is at the predetermined position as shown in FIGS. Then, the user only has to stop the reel pulling out or winding at a position where a click feeling is obtained in the vicinity of the desired cord length, and there is no trouble of adjusting the rotation position at the time of mounting.

The terminal portion 25 may not be provided on the reel base portion 23 and may be fixed. For example, the reel base portion 23 is placed on the ring and the terminal portion 25 is fixed at a position inside the ring, or the terminal portion 25 is formed on the surface opposite to the surface on which the reel base portion 23 is formed. And voltage input terminal 2
The connection between 6, 26 and the cord 22 may be formed by a sliding contact mechanism or the like. Then, the cord can be pulled out while it is still attached to the power supply unit 1, and there is no need to worry about the rotational position state at the time of attachment.

FIG. 8 shows another embodiment of the power supply unit 1 in which only one mounting portion 3 is provided. Also in this case, the cord unit 20 may be replaced according to the DC input voltage of the device used.

FIG. 9 and FIG. 10 show examples of circuit configurations as an embodiment in which the power supply unit 1 is used by inputting DC power from a car battery, for example. In the case of FIG. 9, DC 12V is input to the input terminal 11 from the car battery. Reference numeral 12 is a DC / AC converter, which obtains and outputs AC100V from DC12V. In this case, for example, an outlet similar to a commercial outlet is formed on the housing of the power supply unit 1, which is the output terminal 1 of AC100V.
It is set to 3. Therefore, it is possible to use the device having the outlet plug in the vehicle.

DC12 via the spring contact switch 7
The V input is supplied to the DC / DC converters 14 and 15. The DC / DC converter 14 receives 3 from the DC12V input.
Voltages of V and 4.5V are obtained and supplied to terminals 6a and 6b.
The DC / DC converter 15 obtains 6V and 9V voltages from the DC 12V input and supplies the voltages to the terminals 6c and 6d. Therefore, similarly to the above-described embodiment, by selecting and mounting the cord unit 20 according to the DC input voltage of the device to be used, the operating power supply voltage can be supplied to the device.

In the case of the embodiment shown in FIG. 10, the construction of the cord unit 20 is also different. First, in the power supply unit 1, the DC / DC converter 16 operates from the DC 12V input to
You can get V, 4.5V, 6V and 9V,
The output voltage is set by resistors R _{1 to} R ₄ .

The voltage output of the DC / DC converter 16 is output from the terminals 6f and 6g, and the code unit 2
On the 0 side, the contact body S at a position corresponding to the terminals 6f and 6g is used as the voltage input terminal 26.

Resistors R _{1 to} R ₄ having different resistance values are connected to the terminals 6 a to 6 d, and the terminal 6 e serving as the ground on the cord unit 20 side and the corresponding contact body of the terminals 6 a to 6 d have a voltage. Setting terminals 27, 2
7 The voltage setting terminals 27, 27 are short-circuited.

That is, the resistors R _{1 to} R ₄ switch the division ratio setting in the DC / DC conversion process.
For example, when the voltage setting terminals 27, 27 of the cord unit 20 are in contact with the terminals 6a, 6e, the resistance R
In division ratio set by _1, DC / DC converter 1
DC6V is output from 6 between terminals 6f and 6g. Therefore, in that case, the output terminal 21 of the cord unit 20 is D
It becomes C3V output.

Further, the cord unit 20 is replaced, and the voltage setting terminals 27, 27 of the cord unit 20 are replaced.
If is was the one that contact terminals 6c, and 6e, in partial pressure ratio that is set by the resistor R _3, from the DC / DC converter 16 terminal 6f, is DC6V between 6g is output.
Therefore, DC is applied to the output terminal 21 of the cord unit 20.
6V output appears.

That is, similarly to the embodiment shown in FIG. 9, by selecting and mounting the cord unit 20 according to the DC input voltage of the device to be used, the operating power supply voltage can be supplied to the device.

By the way, in the above embodiment, the cord unit 20 is mounted on the power supply unit 1 as the power supply adapter for use, but the electronic device may be directly mounted on the power supply unit 1.

FIG. 11 shows a battery charger in which the charging battery BT is mounted and power is supplied to charge the charging battery BT. In this battery charger, the lower part of the housing is the same as the cord unit 20 in the mounting portion 3 of the power supply unit 1.
It has a shape and size that can be attached to. Then, the terminal portion 25 is formed at a position corresponding to the terminal portion 4 of the power supply unit 1 when mounted. And this terminal part 25
The voltage input terminals 26, 26 in FIG. 2 are DC voltage input terminals of this device.

For example, if the operating power supply voltage of this battery charger is 6V DC, this terminal section 2
5 is formed as a type of FIG. Then, by mounting this battery charger on the mounting portion 3 of the power supply unit 1, the battery charger has a DC6 as an operating power supply voltage from the voltage input terminals 26, 26.
V is input and the charging operation can be performed.

FIG. 12 shows an emergency light, which is also shaped so that it can be mounted on the mounting portion 3, and a terminal portion 25 is formed at a position corresponding to the terminal portion 4. For example, if the operating power supply voltage is DC3V, the terminal portion 25 is of the type shown in FIG. Then, by mounting the emergency light on the mounting portion 3 of the power supply unit 1, the voltage input terminal 2
DC3V is input from 6, 26 as the operating power supply voltage,
A light emitting operation can be performed.

FIG. 13 shows a shaver, which is also shaped so that it can be mounted on the mounting portion 3, and a terminal portion 25 is formed at a position corresponding to the terminal portion 4. In this case, the charging operation for the rechargeable battery in the shaver is performed by the mounting portion 3 of the power supply unit 1.
It can be executed by attaching it to the.
For example, if the terminal portion 25 is of the type shown in FIG. 4 (d), DC 9V is supplied from the power supply unit 1 and the charging operation is performed.

FIG. 14 shows an air cleaner, which is also shaped so that it can be mounted on the mounting portion 3, and a terminal portion 25 is formed at a position corresponding to the terminal portion 4. For example, if the operating power supply voltage is DC 4.5V, the terminal portion 25 is shown in FIG.
Is the type of. Then, by mounting this air cleaner on the mounting portion 3 of the power supply unit 1, the voltage input terminal 2
DC 4.5V is input as an operating power supply voltage from 6 and 26, and the operation can be performed.

For example, by allowing the electronic device to be directly attached to the power supply unit 1 as described above, it is not necessary to connect a cord to the electronic device to obtain an external power supply voltage, and the trouble of connection is eliminated. At the same time, there is no need to worry about storing the cord.

Although various embodiments have been described above, various modifications are conceivable in the shape and configuration of each part. For example, although the contact portion S corresponding to all the power supply units 6a to 6i is provided in the terminal portion 25, the necessary voltage input terminals 26, 2 are provided.
Only 6 may be provided.

Further, in the embodiment, among the terminals of the terminal portion 4 of the power supply unit 1, only the terminals 6a to 6e, or in the example of FIG. 10, only the terminals 6a to 6g are used. May be output, or may be used to output not only DC voltage but AC voltage. Of course, the number of terminals of the terminal portion 4 of the power supply unit 1 may be other than nine. Further, although the terminals 6a and 6b and the voltage input terminals 26, 26 are plate-shaped terminals, various other shapes are conceivable.

[0053]

As described above, according to the present invention, the power supply unit can output various different voltages among the plurality of terminals, and the terminal connected by the voltage input terminal of the cord unit is selected. Therefore, the cord unit to be mounted can be exchanged for use according to the input voltage of the electronic device used, waste is eliminated, and it can be used as a power adapter for various electronic devices.

Further, as in the conventional case where the AC adapters having various shapes are wired to the commercial outlets with the octopus legs, the troublesomeness is eliminated, and the appearance is neat. Further, in the cord unit, it is sufficient to pull out the cord for a required length and use it, and the cord is not too long to be an obstacle or unsightly. Also, when the cord unit is not used, the cord does not easily get in the way if it is wound up.

For an electronic device that can be used with the power supply unit mounted, operating power can be obtained by mounting the power supply unit by setting the positions of the pair of voltage input terminals according to the input power supply voltage. It is possible to eliminate the trouble of connecting cords.

[Brief description of drawings]

FIG. 1 is a perspective view of a power supply unit according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram of a terminal portion of the power supply unit according to the embodiment.

FIG. 3 is a perspective view of the cord unit according to the embodiment.

FIG. 4 is an explanatory diagram of a terminal portion of the cord unit according to the embodiment.

FIG. 5 is an explanatory diagram of a cord winding mechanism of the cord unit according to the embodiment.

FIG. 6 is a configuration diagram of a power supply unit and a cord unit according to the embodiment.

FIG. 7 is an explanatory diagram of a usage state of the power supply adapter by the power supply unit and the cord unit of the embodiment.

FIG. 8 is a perspective view of a power supply unit according to a second embodiment.

FIG. 9 is a block diagram of a power supply unit according to a third embodiment.

FIG. 10 is a block diagram of a power supply unit and a cord unit according to a fourth embodiment.

FIG. 11 is a perspective view of a battery charger that is an electronic device of the embodiment.

FIG. 12 is a perspective view of an emergency light which is an electronic apparatus of the embodiment.

FIG. 13 is a perspective view of a shaver that is an electronic device according to an embodiment.

FIG. 14 is a perspective view of an air cleaner that is an electronic device according to an embodiment.

FIG. 15 is an explanatory view of a usage state of a conventional AC adapter.

[Explanation of symbols]

 1 Power Supply Unit 2 Outlet Plug 3 Mounting Part 4 Terminal Part 5 Partition Plate 6a-6i Terminal 7 Spring Contact Switch 8 AC / DC Converter 12 DC / AC Converter 13 Output Terminal 14, 15 DC / DC Converter 20 Code Unit 21 Output Terminal 22 Code 23 Reel base 24 Operation part 25 Terminal 26 Voltage input terminal 27 Voltage setting terminal S Contact

Claims (7)

[Claims] 1. A power supply input means, one or a plurality of mounting parts, a plurality of terminals formed in the mounting part, and a plurality of output voltages generated from an input voltage input from the power supply input means. And a voltage converter means for supplying an output voltage between predetermined terminals of the plurality of terminals, respectively. 2. Two terminals of the plurality of terminals are selectively connected depending on the position of the power input terminal formed on the mounted body mounted on the mounting portion, and appear between the two terminals. The power supply unit according to claim 1, wherein the power supply unit is configured to supply an applied voltage to the mounted body. 3. A voltage input terminal formable range is set in the housing portion, and a pair of voltage input terminals whose position is set within the voltage input terminal formable range according to the voltage to be output are formed. A code unit, wherein a voltage between the pair of voltage input terminals is configured to be an output voltage from an output terminal provided via a cord section. 4. The voltage input terminal formable range of the housing part is such that a mounting part having a plurality of terminals is formed, a plurality of output voltages are generated from the input voltage, and each output voltage is set to a predetermined value at each of the plurality of terminals. When the housing portion is mounted on the mounting portion of the power supply unit configured to be supplied between the terminals, the position is set as a position corresponding to the plurality of terminals in the mounting portion. The cord unit according to claim 3. 5. The cord unit according to claim 3, wherein the cord portion can be wound inside the housing portion. 6. A power supply input means, one or a plurality of mounting portions, a plurality of terminals formed in the mounting portion, and a plurality of output voltages generated from the input voltage input from the power supply input means. A power supply unit configured to have a voltage converter means for supplying an output voltage between predetermined terminals of the plurality of terminals, and a voltage input terminal formable range is set in the housing part, A pair of voltage input terminals whose position is set within the voltage input terminal formable range are formed,
And a cord unit configured to set a voltage between the pair of voltage input terminals as an output voltage from the output terminal via the cord portion, and a housing portion of the cord unit to a mounting portion of the power supply unit. It is configured such that the voltage that appears between the pair of terminals of the power supply unit that is mounted and selectively connected by the pair of voltage input terminals of the cord unit becomes the output voltage from the output terminal of the cord unit. Power adapter characterized by 7. A voltage input terminal formable range is set in the housing portion, and a pair of voltage input terminals whose position is set within the voltage input terminal formable range according to a voltage to be input are formed, An electronic device, wherein a voltage between the pair of voltage input terminals is input as an operating voltage.