JP2000150083A - Plug / jack for DC power supply - Google Patents

Abstract

(57) [Problem] To provide a DC power supply (so-called AC adapter) which is hand-held or directly connected to a wall outlet, while having the same appearance as a conventional plug / jack, while arranging a third electrode and reliably. It is to provide a plug / jack structure having high flexibility. A third electrode is provided on a part of a cylindrical outer part in the same configuration as a normal cylindrical two-electrode plug.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a plug / jack of a direct current power supply (AC adapter) used for a portable computer which is directly connected to a wall outlet or has a signal terminal, that is, a plug / jack having a third electrode. Related to the structure.

[0002]

2. Description of the Related Art In a DC power supply such as an AC adapter, a connector shown in FIG. 1 is usually used as a connector for supplying output power with a two-pole output. The plugs and jacks shown in Appendix 8 of the description of the technical standards (explanation of the Electrical Appliance and Material Control Law), the section of the DC power supply, are exclusively used.

The plug shown in FIG. 1 is standardized. The shape of the plug is determined by the output voltage, and the shape such as the diameter and length of the cylindrical portion is determined. The three-pole connector is used
There is no standardized shape among manufacturers and their shapes and dimensions are different. For example, Hirose Electric's RP series (3-pole product)
The structure is represented by

[0004] Due to the recent decrease in standby power regulation values in various countries around the world, as shown in FIG.
In place of 4 ', a method of supplying power from another power supply' 15 'has been adopted. According to this method, a signal for switching to another power supply' 15 'is received from the load side, and the power supply is switched by this signal. Is what you do.

In this case, the output (+), including the common terminal,
At least three terminals, an output (-) (common terminal) and a signal terminal (S), are required.

[0006]

If the current plug / jack is used, the structure is not a structure capable of transmitting and receiving signals since it has only two poles. Also, if a three-pole connector is used, the shape is incompatible with the conventional plug / jack, and the signal terminal is not used. In other words, even if an attempt is made to use an energy-saving AC adapter for a device that does not require a signal, Since the connector shape is different, it is necessary to create a new one in which the connector part is replaced with the current plug product.

For products such as AC adapters, it is necessary to unify the structure and circuit of the old product and the new structure product, and the current three-terminal connector has not provided an answer.

Next, the schematic structure of the existing plug will be described with reference to FIG.

"1" is a conductive part metal used as the electrode 1, "2" is an insulating part which also serves as an electrode, "3" is a conductive metal part having a spring property used as the electrode 2, and "4" is an electrode. A housing part that insulates and fixes each part,
'5' and '6' are lead wires drawn out from the electrodes.

Next, the schematic structure of the jack section will be described with reference to FIG. '7' is a housing part, '8' is an electrode '1' made of a metal having spring properties, and '9' is an electrode 2. FIG.
The dimensions of each part are determined so that the plug shown in FIG. 3 is fitted into the jack shown in FIG. Since these dimensions vary with the voltage used, not all plugs / jacks are the same.

A plug / jack having three electrodes is not a product at present, and the usual connector shown in FIG. 4 is exclusively used. The description thereof is not related to the general and the contents of the present invention, and thus the description is omitted. In addition, there is a plug used for audio in a plug having a three-pole electrode, but this electrode is exposed and when used as a plug for transmitting energy, the electrode having energy is exposed to the outside Therefore, there is a problem that a short circuit fault occurs when the terminal touches the metal part.

An object of the present invention is to provide a signal pin with three terminals in the same shape as the conventional one.

A product that does not have an energy-saving mode, ie, a conventional product, can use an energy-saving DC power supply without changing the connector shape, that is, a product that is upwardly compatible from the product side.

The problem is that there is no short circuit between the pins, that is, both energy electrodes are not exposed to the outside, that is, there is no problem in safety.

[0015]

Means for Solving the Problems Both the plug and the jack have the same outer shape as the current one, the jack has a signal pin arranged at the root of the plug, the jack has a signal pin at the root and is made of a metal having a spring property, and Displace it from the output pin (+). The signal part of the jack may be made of metal on the ring, or it may be made of metal plating applied to the upper part of the insulating part. In this case, the signal part only needs to send and receive signals and a cross-sectional area with current capacity is necessary Without plating, it is sufficient.

With this structure, the workability is not reduced, the energy electrode is not exposed to the outside, the signal does not contact the output pin, and the same shape as that of the conventional product is maintained, so that upward compatibility is maintained. Can be.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is an external view of a plug which is equivalent to a conventional product, FIG. 5 is a structural view of a plug according to an embodiment of the present invention, and FIG. 6 is a side view (a view from the terminal portion) of the plug. is there.

As shown in FIG. 1, the plug shape is
There is no difference from the exquisite product. As shown in FIG. 5, the exterior part is a '1' electrode 1 (normally-), and a '2' electrode 2 (normally +) made of a conductive metal having two springs inside. The '3' electrode 3 is arranged as the signal electrode at the innermost side and is mounted at a distance of 1 mm or more from the '2' electrode 2. This electrode is also made of a conductive metal having a spring property. The configuration of the plug will be described with reference to FIG. 5, but the same parts as those of the conventional product are denoted by the same reference numerals. '1' is electrode 1, '2' is an insulating part which holds the electrode and insulates between the two electrodes, '3' is an electrode made of a spring-like metal 2, '4' is a terminal and an electrode , A housing part to be insulated, '5' is a lead wire from the electrode 2, '6' is a lead wire from the electrode 1, and '10' is an insulating layer formed on the electrode 1, which is a metal surface. The surface may be coated with an insulating paint, or may be formed by winding and fusing an insulating film on a metal. '11' is a third electrode used as a signal electrode, which can be easily made thin by metal plating on the surface of the insulating layer '10', if the thickness does not matter (usually about 0.2 mm) A metal ring may be placed on top of the insulating layer. '12' is a lead wire of the electrode 3, which is soldered to a plated portion. FIG. 6 is a side view of the plug as viewed from the terminal direction.

Next, the structure of a jack according to an embodiment of the present invention will be described with reference to FIG. '7' is a housing part for holding and insulating the electrodes, '8' is an electrode 1, which is made of a metal having a spring property. '9' is the electrode 2 which is formed of a metal rod. '11' denotes an electrode 3 which is also made of a springy metal like the electrode 1. However, the dimension a is drawn about 5 mm from the electrode 1'8 '. The arrangement structure is such that the '8' electrode 2 and the '11' electrode 3 are circumferentially shifted from each other as shown in FIG. FIG. 8 is a side view of the jack viewed from the fitting direction. FIG. 10 shows a cross-sectional view of the plug of the present invention and the jack according to an embodiment of the present invention in a fitted state, and FIG. 11 shows a cross-sectional view of the plug of the present invention and a conventional jack in a fitted state. Indicates a point at which a lead wire is connected to the third electrode on the plug side.

[0021]

A three-pole plug / jack having the same dimensions as a conventional two-pole plug / jack can be obtained.

Since the energy electrodes are not exposed, a short circuit between the electrodes hardly occurs.

The signal electrode is inside (not exposed)
There is no oil film adhesion and dust adhesion by touching,
Poor contact is less likely to occur. Further, since the shape is the same as that of the conventional product, even if the plug (that is, the DC power supply) of the present invention is used for the old product, there is no problem in performance as only the signal pin and the electrode 1 are in contact. Since the normal electrode 1 is used as a common terminal, the signal terminal and the common terminal are connected, and it is apparent that a rather good result is produced. Next, when the plug of the conventional DC power supply device is connected to the jack according to the embodiment of the present invention, the same result as that of the plug is obtained without any problem, and it is apparent that a good result is produced.

[Brief description of the drawings]

FIG. 1 is an external view of a plug.

FIG. 2 shows the structure of a current product plug.

FIG. 3 shows the structure of a current jack.

FIG. 4 shows a current three-terminal connector.

FIG. 5 shows a plug structure according to an embodiment of the present invention.

FIG. 6 is a side view of a plug according to an embodiment of the present invention.

FIG. 7 is a structure of a jack according to an embodiment of the present invention.

FIG. 8 is a side view of a plug according to an embodiment of the present invention.

FIG. 9 is a circuit block diagram of a DC power supply that supplies power during standby from another power supply.

FIG. 10 is a cross-sectional view of the fitting of the plug and the jack of the present invention.

FIG. 11 is a cross-sectional view of the fitting between the plug of the present invention and a current jack.

[Explanation of symbols]

1-electrode, 2-insulating part, 3-spring-like electrode, 4-
Housing 5, 6-lead wire, 7-housing,
8--spring-like electrode, 9-electrode rod, 10-insulation part, 1
1—Signal electrode, 12—Lead wire, 13—Switching section, 14—Voltage conversion section (large output), 15—Voltage conversion section (micro output), 16—Output plug

Continued on the front page F term (reference) 5E023 AA03 AA12 BB02 BB03 DD22 EE02 GG01 GG15 HH09 HH13 HH17 HH20 5H006 CB09 HA08

Claims (2)

[Claims] A first electrode formed in a cylindrical shape protruding from a housing; a second electrode formed outside the first electrode; and a second terminal formed on a surface of the second electrode. A plug for a DC power supply comprising three electrodes. 2. A structure in which a first electrode formed in a rod shape, a second electrode outside the rod shape, and an electrode with which the second electrode contacts are displaced from a third electrode of a signal terminal. A DC power supply jack characterized by having: