JP3271223B2 - Power supply plug and power jack - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power supply plug for supplying power to various electronic devices and a power supply jack attached to the electronic device and supplied with power via the power supply plug.

[0002]

2. Description of the Related Art Conventionally, various electronic devices such as audio devices and computer devices have been proposed which are configured to operate by being supplied with operating power from an external power supply device. The power supply device includes, for example, a transformer (transformer) and a rectifier, and is a so-called AC adapter. That is, this AC
The adapter is supplied with, for example, a 100 V AC power supply from a household power line, rectifies and transforms the power supply, and supplies
The output is a DC power supply of a predetermined low voltage such as V or 9V.

The power output from the power supply is sent to a power supply plug via a power supply cord. The power supply plug has a ground terminal and a power supply terminal. Power output from the power supply device is applied to the power supply terminal via the power supply cord.

On the other hand, the electronic equipment is provided with a power jack to which the power supply plug is connected. The power supply jack is configured such that the power supply plug is inserted and engaged, and has a ground terminal to which a ground terminal of the power supply plug is connected, and a power input terminal to which the power supply terminal is connected. ing. The power applied to the power supply terminal is supplied to the electronic device via the power input terminal.

[0005]

By the way, in the AC adapter which is a power supply device as described above, the voltage value of the power supply to be output is a predetermined value which is a predetermined value. In the electronic device, the voltage value of the power to be supplied through the power jack is a predetermined one of the rated values.

Therefore, it is impossible to use an AC adapter and an electronic device having different rated values in combination. In particular, AC with a higher rated value than the rated value of electronic equipment
When the adapter is used in the electronic device, an accident such as destruction, heat generation, or burning of an electronic element included in the electronic device may occur, which is dangerous.

Therefore, dedicated AC adapters must be prepared for various electronic devices having different rated values, which is inconvenient.

Accordingly, the present invention has been proposed in view of the above-described circumstances, and avoids the disadvantage that power having a voltage value different from the rated value is supplied to an electronic device.
It is an object of the present invention to provide a power supply plug and a power jack that enable a power supply device such as an AC adapter to be shared among various electronic devices.

[0009]

In order to solve the above problems and achieve the above object, a power supply plug according to the present invention comprises:
A shaft formed substantially in a columnar shape, a positioning strip formed on the outer peripheral surface of the shaft in parallel with the axis of the shaft, and a cylinder along the outer peripheral surface on the outer surface of the shaft A plurality of supply terminals are provided in a planar shape in a circumferential direction of the shaft portion, and the plurality of supply terminals are applied with voltages having different voltage values from each other.

The power jack according to the present invention is formed with a hole into which the shaft of the power supply plug is inserted, and formed on the inner wall of the hole corresponding to the positioning strip of the shaft. A positioning ridge for engaging the positioning ridge to position the shaft in the rotational direction; and a shaft when the positioning ridge is positioned on the inner wall of the hole by the positioning ridge. And at least one input terminal disposed at a position corresponding to any one of the plurality of supply terminals.

[0011]

[0012]

[0013]

In the power supply plug according to the present invention, the outer peripheral surface of the shaft having a substantially cylindrical shape is provided with a positioning strip formed parallel to the axis of the shaft, A plurality of supply terminal portions arranged in a circumferential direction of the shaft portion in a cylindrical shape along the outer peripheral surface portion are provided on the outer peripheral surface portion, and the plurality of supply terminal portions each apply a voltage having a different voltage value from each other. Since the voltage is applied, the supply terminal portion can be selected according to the rotational angle position of the shaft portion around the axis.

In the power supply jack according to the present invention, the inner wall portion of the hole into which the shaft portion of the power supply plug is inserted is engaged with the positioning strip to rotate in the rotation direction of the shaft portion. A positioning strip portion for performing positioning and at least one input terminal portion which is located at a position corresponding to any of the plurality of supply terminal portions of the shaft portion when the positioning of the shaft portion is performed are provided. Therefore, the supply terminal corresponding to the input terminal is selectively connected to the input terminal.

[0015]

[0016]

[0017]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIGS. 1 and 2, the power supply plug according to the present invention has a shaft portion 1 formed in a substantially cylindrical shape. The shaft 1 is formed of an insulating material such as a synthetic resin material. The base end of the shaft 1 is connected to the knob 2. The knob 2 is formed of an insulating material such as a synthetic resin material so that it can be gripped by fingers.

A cylindrical ground terminal 12 made of a conductive material such as a metal material is built in the center of the shaft 1 along the axis of the shaft 1. The ground terminal 12 is disposed inside the shaft portion 1 by being sealed inside by means of so-called insert molding or the like, and the front end portion is flush with the front end portion of the shaft portion 1. It faces outside. The ground terminal 12 has a center hole 11 that is open on the tip side along the axis.

On the outer peripheral surface of the shaft 1, a positioning strip 7 formed parallel to the axis of the shaft 1 is formed. The positioning line portion 7 is formed as a concave line which is opened at the tip of the shaft portion 1.

The outer peripheral surface of the shaft 1 is formed of a conductive material such as a metal material.
The first to third supply terminal portions 8, which are arranged in the circumferential direction of
9 and 10 are provided. Each of these supply terminal portions 8,
Reference numerals 9 and 10 are located at respective predetermined angular positions around the axis of the shaft portion 1 with respect to the positioning line portion 7 as a reference. In this example, each of the supply terminal portions 8, 9, and 10 is approximately 1 around the shaft 1.
They are arranged at intervals of 20 °.

The grounding terminal 12 has a base end in the shaft portion 1 connected to the core wire 5 of the grounding cord 3. Further, the respective supply terminal portions 8, 9, 10 are connected to the first to third power cords 4a, 4b, 4 via the inside of the shaft portion 1.
c corresponding to the core wires 6a, 6b, 6c.

The earth cord 3 and the power cords 4a, 4b, 4c are twisted as one cord through the knob 2 to form a power supply cord.
This power supply cord is connected to a power supply.

The power supply device comprises a transformer (transformer) and a rectifier, and is used as a so-called AC adapter. This power supply device is supplied with a 100 V AC power supply from a household power line or a 24 V or 12 V DC power supply from an automobile battery, rectifies and transforms the power supply, and a first power supply based on the ground potential.
Output as a DC power supply of a third voltage value, for example, 3V, 6V and 9V.

The power supply device includes the first power cord 4
a, a DC power supply of a first voltage value (3 V) is supplied to the second power supply cord 4b, and a DC power supply of a second voltage value (6V) is supplied to the second power supply cord 4b. DC power of a voltage value (9 V). Further, the earth cord 3 is connected to an earth potential portion of the power supply device. That is, a voltage having the first voltage value (3 V) is applied to the first supply terminal section 8. A voltage having a second voltage value (6 V) is applied to the second supply terminal section 9. A voltage having a third voltage value (9 V) is applied to the third supply terminal unit 10.

As shown in FIGS. 1, 3 and 5, the power jack according to the present invention has a block portion 13 which is disposed and used in an electronic device. The block portion 13 is formed in a substantially rectangular shape using an insulating material such as a synthetic resin material. This block part 13
A hole 1 into which the shaft 1 of the power supply plug is inserted.
4 are formed. The hole 14 faces the outside of the outer housing of the electronic device.

On the inner wall of the hole 14, a positioning strip 16 corresponding to the positioning strip 7 of the shaft 1 is formed. The positioning strip 16 is formed as a ridge in a direction along the axis of the hole 14. When the shaft 1 is inserted into the hole 14, the positioning ridge 16 engages with the positioning ridge 7 to perform positioning of the shaft 1 in the rotational direction.

When the shaft 1 is positioned by the positioning strip 16 on the inner wall of the hole 14, any one of the supply terminals 8, 9, and 10 of the shaft 1 is provided. First to third input terminal portions 18, 17, and 19 are provided at positions corresponding to the first and second input terminals.

That is, the first input terminal section 18
The angular position of the hole 14 around the axis with respect to the positioning ridge 16 is the angular position of the shaft 1 around the axis of the first supply terminal 8 with respect to the positioning ridge 7. It corresponds to. The second input terminal section 17 is
The angular position of the hole 14 around the axis with respect to the positioning line 16 is the angular position of the shaft 1 around the axis of the second supply terminal 9 with respect to the line 7 to be positioned. It corresponds to. The third input terminal 19
The angular position around the axis of the hole 14 with respect to the positioning strip 16 is adjusted around the axis of the shaft 1 with respect to the positioning strip 7 of the third supply terminal 10. It corresponds to the angular position.

The first input terminal section 18 is a terminal that receives a supply of a first voltage value (3 V) from the first supply terminal section 8. The second input terminal unit 17 is a terminal that receives a supply of a second voltage value (6 V) from the second supply terminal unit 9. The third input terminal unit 19 is a terminal that receives a supply of a third voltage value (9 V) from the third supply terminal unit 10.

Each of the input terminal sections 18, 17, 19 is connected to a power supply section of the electronic device via a connection line (not shown).

In the hole 14, the hole 14
A ground terminal pin 15 protruding from the bottom surface of the hole along the axis of the hole 14 is provided. The ground terminal pin 15 has a base end connected to a ground potential portion of the electronic device. When the shaft 1 is inserted into the hole 14, the ground terminal pin 15 is inserted into the center hole 11 of the ground terminal 12 and connected to the ground terminal 12.

[0032] The electronic device may be configured to control the first voltage value (3
V), the power jack is connected to the ground terminal pin 15 as shown in FIG.
And the first input terminal 18. In addition, the electronic device is configured to control the second voltage value (6
V), the power jack is connected to the ground terminal pin 15 as shown in FIG.
And the second input terminal 17. Then, the electronic device operates the third voltage value (9
V), the power jack is connected to the ground terminal pin 15 as shown in FIG.
And the third input terminal 19.

In the power supply plug and the power supply jack according to the present invention configured as described above, each of the input terminal portions 18, 17, 19 is set in accordance with the angular position of the hole 14 around the axis. Since one of the supply terminals 8, 9, and 10 is selected, it is possible to supply power of a rated value to each electronic device even if the power supply device is shared.

When the power jack is used in an electronic device to which power of a plurality of voltage values is to be simultaneously supplied, two or more input terminals may be provided.

The power supply plug is connected to the shaft 1
A configuration in which two or four or more supply terminal portions are provided on the upper side to supply power of two or four or more voltage values may be provided.

The power supply plug according to the present invention comprises:
As shown in FIG. 6, the shaft portion 1 formed in a substantially cylindrical shape, and first to third supply terminal portions 20 arranged on the outer peripheral surface of the shaft portion 1 in the axial direction of the shaft portion 1. , 21 and 22.

The shaft 1 is made of an insulating material such as a synthetic resin material, and has a base end connected to the knob 2 in the same manner as in the above-described example.

A cylindrical grounding terminal made of a conductive material such as a metal material is built in the center of the shaft 1 along the axis of the shaft 1. The ground terminal faces outward with the front end portion being flush with the front end portion of the shaft portion 1. The ground terminal has a center hole that is open on the tip side along the axis.

The outer peripheral surface of the shaft 1 is formed of a conductive material such as a metal material.
The first to third supply terminal portions 20, which are arranged in the axial direction of
21 and 22 are provided. Each of these supply terminal portions 2
0, 21 and 22 are distances from the tip of the shaft 1 described above.
Each of them is located at a predetermined distance.

The grounding terminal has a base end in the shaft portion 1 connected to a core wire 5 of a grounding cord 3. Each of the supply terminal portions 20, 21, 22 is connected to the shaft portion 1.
Via connection wires 23, 24, 25 arranged along the first and third power cords 4a, 4b, 4c.
6b and 6c.

The ground cord 3 and the power cords 4a, 4b, 4c are twisted as one cord through the knob 2 to form a power supply cord.
The power supply cord is connected to the power supply.

The first supply terminal section 20 has the first
(3V) is applied. A voltage having the second voltage value (6 V) is applied to the second supply terminal section 21. The voltage of the third voltage value (9 V) is applied to the third supply terminal section 22.

The power jack according to the present invention used in correspondence with the power supply plug has a block portion 13 which is disposed and used in an electronic device as shown in FIGS. It is composed. This block unit 13
It is formed in a substantially rectangular shape by an insulating material such as a synthetic resin material. The block 13 has a hole 14 into which the shaft 1 of the power supply plug is inserted.
The hole 14 faces the outside of the outer housing of the electronic device.

When the insertion of the shaft 1 into the hole 14 is completed, that is, when the shaft 1 is inserted to a predetermined position with respect to the hole 14, In addition, first to third input terminal portions 26, 27, and 28 are provided at positions corresponding to any of the supply terminal portions 20, 21, 22 of the shaft portion 1.

That is, the first input terminal 26 is
A terminal receiving the first voltage value (3 V) from the first supply terminal portion 20, wherein the distance from the opening end of the hole 14 is the shaft portion 1 of the first supply terminal portion 20. Roughly corresponds to the distance from the base end portion of. The second input terminal 27 is a terminal that receives the supply of the second voltage value (6 V) from the second supply terminal 21, and the distance from the opening end of the hole 14 is the same as that of the second input terminal 27. This substantially corresponds to the distance from the base end of the shaft portion 1 of the second supply terminal portion 21. The third input terminal section 28 is a terminal that receives a supply of a third voltage value (9 V) from the third supply terminal section 22, and the distance from the opening end of the hole 14 is equal to the third input terminal section 28. This substantially corresponds to the distance from the base end of the shaft portion 1 of the third supply terminal portion 22.

The input terminals 26, 27, and 28 are connected to power supply units of the electronic device via connection lines 29, 30, and 31, respectively.

In the hole 14, the hole 14
A ground terminal pin 15 protruding from the bottom surface of the hole along the axis of the hole 14 is provided. The ground terminal pin 15 has a base end connected to a ground potential portion of the electronic device. When the shaft 1 is inserted into the hole 14, the ground terminal pin 15 is inserted into the center hole of the ground terminal and connected to the ground terminal.

[0048] The electronic device operates in response to the first voltage value (3
V), the power jack is connected to the ground terminal pin 15 as shown in FIG.
And the first input terminal 26. In addition, the electronic device is configured to control the second voltage value (6
V), the power jack is connected to the ground terminal pin 15 as shown in FIG.
And the second input terminal 27 described above. Then, the electronic device operates the third voltage value (9
V), the power jack is connected to the ground terminal pin 15 as shown in FIG.
And the third input terminal 28.

In the power supply plug and the power jack according to the present invention configured as described above, each of the input terminal portions 26, 27, and 28 depends on the distance from the opening end of the hole 14 to each of the input terminal portions 26, 27, and 28. Since one of the supply terminal units 20, 21, and 22 is selected, it is possible to supply power of a rated value to each electronic device even if the power supply device is shared.

In the power supply plug and the power jack shown in FIGS. 6 to 8, the input terminal portions 26, 2
It is necessary to arrange the high voltage one of the holes 7 and 28 on the opening end side of the hole 14 and the low voltage one on the back side of the hole 14. When the shaft portion 1 is inserted into the hole portion 14, all of the supply terminal portions 20, 21, 22 are sequentially slid on the input terminal portion provided on the opening end side of the hole portion 14. Because it is done.

When the power supply jack is used in an electronic device to which power of a plurality of voltage values is to be supplied simultaneously, two or more input terminal portions may be provided. .

Also in this power supply plug, two or four or more supply terminal portions are arranged on the shaft portion 1 so that two or four or more voltage values are provided. May be supplied.

[0053]

As described above, in the power supply plug and the power jack according to the present invention, the outer peripheral surface of the substantially cylindrical shaft is formed parallel to the axis of the shaft. A plurality of supply terminal portions arranged in the circumferential direction of the shaft portion in a cylindrical shape along the outer peripheral surface portion are provided on the outer peripheral surface portion of the shaft portion, and the plurality of supply terminal portions are provided. Are applied with voltages having different voltage values from each other. Therefore, in this power supply plug, the supply terminal portion can be selected according to the rotational angle position of the shaft portion around the axis.

In the power jack according to the present invention, the inner wall portion of the hole into which the shaft portion of the power supply plug is inserted is engaged with the positioning streak portion in the rotation direction of the shaft portion. A positioning strip portion for performing positioning and at least one input terminal portion which is located at a position corresponding to any of the plurality of supply terminal portions of the shaft portion when the positioning of the shaft portion is performed are provided. . Therefore, in this power jack, the supply terminal portion corresponding to the input terminal portion is selectively connected to the input terminal portion.

[0055]

[0056]

That is, according to the present invention, a power supply device such as an AC adapter can be shared among various electronic devices while avoiding the disadvantage that power having a voltage value different from the rated value is supplied to the electronic devices. It is possible to provide a power supply plug and a power jack which enable the above.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a configuration of a power supply plug and a power jack according to the present invention.

FIG. 2 is a front view showing a configuration of the power supply plug.

FIG. 3 is a front view showing a first configuration example of the power jack.

FIG. 4 is a front view showing a second configuration example of the power jack.

FIG. 5 is a front view showing a third configuration example of the power jack.

FIG. 6 is a side view showing another example of the configuration of the power supply plug and the power jack according to the present invention, the first configuration example of the power jack being partially cut away.

FIG. 7 is a longitudinal sectional view showing a second configuration example of the power jack shown in FIG. 6;

FIG. 8 is a longitudinal sectional view showing a third configuration example of the power jack shown in FIG. 6;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Shaft part 7 Positioning strip part 8,20 First supply terminal part 9,21 Second supply terminal part 10,22 Third supply terminal part 14 Hole part 18,26 First input terminal part 17,27 Second input terminal section 19, 28 Third input terminal section

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) H01R 17/04-29/00

Claims (2)

(57) [Claims] A shaft having a substantially cylindrical shape; a positioning portion formed on an outer peripheral surface of the shaft in parallel with an axis of the shaft ; Cylindrical surface along the outer peripheral surface
A power supply plug comprising a plurality of supply terminals arranged in a circumferential direction of the shaft , wherein the plurality of supply terminals are applied with voltages having mutually different voltage values. 2. The power supply plug according to claim 1, wherein the shaft portion is inserted into the shaft portion, and an inner wall portion of the hole portion is formed corresponding to the positioning line portion of the shaft portion, and the positioning portion is positioned. A positioning ridge that engages with the ridge to position the shaft in the rotational direction; and a positioning of the shaft when the positioning ridge is positioned on the inner wall of the hole. A power jack having at least one input terminal disposed at a position corresponding to any of the plurality of supply terminals.