JP2003203733A - Structures of power supply adapter and its guide connector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enhance the applicability to circuit boards of different specifications without requiring any circuit board with a connector inserting hole and also prevent solders from slipping off from the soldered part. <P>SOLUTION: The power supply adapter is furnished with a body and at least one guide terminal, and each guide terminal is continued to and contacted with the guide connector having a through hole and a winding region, and the bare wire end of an electric wire is passed through the through hole, wound round the winding region, and soldered fast thereon. The guide connector as another item of the invention to be continued to and contacted with an electric wire having a bare wire end and insulating sheath is equipped with a through hole and a winding region, wherein the bare wire end and part of the insulating sheath are passed through the through hole, and the bare wire end is wound round the winding region and soldered fast thereon. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a power supply adapter, and more particularly to a structure of an AC power supply adapter applied to a power supply device.

[0002]

2. Description of the Related Art The main function of a power supply device is to rectify and convert a commercial power source into direct current electricity, and then provide it to a power receiving facility for use. 1A and 1B are an assembly view and a three-dimensional view of a conventional power supply device. As shown in these drawings, the power supply device mainly includes an upper cover 1, a lower cover 2, and a circuit board 3 housed in a space formed between the upper cover 1 and the lower cover 2. An electronic element 30 and an AC adapter 4 required for a power supply device are provided on the circuit board 3 by inserting them, and a first recess 11 and a second recess ( (Not shown) is formed, and a third recess 21 and a fourth recess 22 are formed on both front and rear sides of the lower cover 2 corresponding to these two recesses. That is, according to this structure, when the upper cover 1 and the lower cover 2 are combined, the first recess 11 and the third recess 21 form the slot opening for receiving the AC power by inserting the AC adapter 4. After the received AC electricity is rectified into DC electricity by the circuit board 3, it is further rectified by a power supply line (not shown) through the slot hole formed by the second unevenness and the fourth recess 22. The power is output to a power receiving facility such as a printer, a radio, or a data machine for use.

2A is a three-dimensional view of the AC adapter in the conventional power supply device of FIG. 1A.
FIG. 2B is a rear view of the AC adapter of FIG. As shown in these figures, the AC adapter 4 includes an insulating body 40, and inside the body 40, a first guide terminal 41 is provided.
1, a second guide terminal 412 and a grounding terminal 413 are provided in the through hole 41. Then, the first guide terminal 411, the second guide terminal 412, and the ground terminal 41
3 passes through a through hole (not shown) on the rear side 401 of the main body 40 and is connected to the first guide connector 431, the second guide connector 432, the ground connector 433 and the connection area 421 by a rivet joining method. 422 and 423
Connected in

The body bottom portion 402 is formed with two support levers 44 integrally formed with the body 40 by an injection method. The support levers 44 extend downward from the body bottom portion 402 for a specific length and then expand to both sides. After that, it is reduced again to form the protruding structure 443. The maximum lateral length of the protruding structure 443 is set to be slightly larger than the width of the insertion holes 33 and 34 of the circuit board 3. Since the support lever 44 itself has elasticity peculiar to the plastic material, when an external force is applied,
The protruding structure 443 of the support lever 44 can pass through the insertion holes 33 and 34 to help the AC adapter 4 to be positioned on the circuit board 3.

The first guide connector 431 and the second guide connector 432 are moved downward so that the AC power signal received by the first guide terminal 411 and the second guide terminal 412 can be transmitted to the circuit board 3. It is soldered on the rear circuit board 3 which is extended and inserted into the connector insertion holes 31 and 32 (see FIG. 1A) of the circuit board 3. Then, the ground connector 433 is extended and bent upward so as to electrically connect to a ground region (not shown) on the circuit board 3 by one electric wire (not shown) to achieve a grounding effect. It is evenly attached to the main body top surface 403.

[0006]

[Problems to be Solved by the Invention] However, the above A
When using the C adapter, the following drawbacks exist.

(1) The first guide connector 431 and the second guide connector 432 are extended downward to extend the circuit board 3.
Since the connector insertion holes 31 and 32 are inserted into the connector insertion holes 31 and 32, the distance between the connector insertion hole 31 and the connector insertion hole 32 is equal to the distance between the first guide connector 431 and the second guide connector 432. It must be designed according to the distance between them. Therefore, it is disadvantageous when the AC adapter is inserted into a circuit board of various standards.

(2) The first guide connector 431 and the second guide connector 432 are made of metal, and are directly inserted downward into the connector insertion holes 31 and 32, and then the circuit board 3 is further inserted. Since it is soldered on
Electronic device 30 lacking in flexibility and on some circuit boards 3
It is not possible to eliminate the disadvantage that the solder at the soldered portion easily drops off due to the thermal stress generated during the operation.

[0009]

SUMMARY OF THE INVENTION The object of the present invention is to overcome the abovementioned drawbacks. The first to achieve this goal
The present invention (corresponding to claim 1) of the present invention is a structure of a power adapter, comprising a body and at least one guide terminal, each guide terminal being connected to a guide connector having a through hole and a winding region, Thus, the bare wire end of the electric wire is passed through the through hole, wound around the winding region, and then soldered onto the winding region.

A second aspect of the present invention (corresponding to claim 2) is the structure of the power supply adapter according to the first aspect of the present invention, wherein the main body is further formed integrally with the main body corresponding to the winding region. It is characterized by having a veneer which is formed.

A third aspect of the present invention (corresponding to claim 3) is characterized in that the structure of the power adapter of the first aspect of the present invention further includes a ground terminal and a ground connector.

Further, a fourth aspect of the present invention (corresponding to claim 4) is that, in the structure of the power supply adapter of the first aspect of the present invention, it is inserted into the corresponding insertion hole on the circuit board below the main body. Is provided with at least two supporting levers.

A fifth aspect of the present invention (corresponding to claim 5)
) In the structure of the power supply adapter according to the fourth aspect of the present invention, the support lever is formed integrally with the main body, and the other end of the electric wire is electrically connected to the circuit board. .

A sixth aspect of the present invention (corresponding to claim 6) is the structure of the power adapter of the first aspect of the present invention, wherein the main body is made of an insulating material, and the partial insulation sheath of the electric wire is the above-mentioned. It is characterized by passing through a through hole.

Further, a seventh aspect of the present invention (corresponding to claim 7) is a structure of a guide connector for connecting to a wire having a bare wire end and an insulating sheath, the structure including a through hole and a winding region. Among them, the bare wire end and the partial insulating sheath pass through the through hole, and the bare wire is wound on the winding region and then soldered onto the winding region.

The above-mentioned solution means will be better understood by describing preferred embodiments with reference to the accompanying drawings.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 3A is a three-dimensional view of an AC adapter of a preferred embodiment according to the present invention, and FIG. 3B is a rear view of the AC adapter of FIG. 3A. As shown in these figures, the AC adapter 5 is provided with an insulating main body 50 having a through hole 51 inside. The through hole 51 has a first guide terminal 511 and a second guide terminal 512.
And a ground terminal 513. The first guide terminal 511, the second guide terminal 512 and the ground terminal 513 pass through a hole (not shown) on the rear side 501 of the main body 50,
First guide connector 5 with rivet joining method
31, the second guide connector 532, the ground connector 533 and the connection regions 521, 522 and 523.

The main body bottom 502 is also integrally formed with two support levers 54 for insertion into corresponding insertion holes on the circuit board 3. Support lever 54 and ground connector 533
Since the structure and principle of is well known to those skilled in the art, its description is omitted. The feature of the present invention is that the first guide connector 5 is used.
31 and the structure of the second guide connector 532, which is different from the prior art in that, for example, it extends a certain length and then bends and is electrically connected to a circuit board by an electric wire 55. Further, since the projecting plate 503 is provided at a position corresponding to the soldering point above the main body 50, the chance of exposing the soldering point can be reduced.

FIG. 4 (a) is an external view of a guide connector applied to the AC adapter according to the present invention, and FIG. 4 (b) shows the bare wire end of the guide connector through hole of FIG. 4 (a). 4 is a diagram showing a situation in which the winding region is wound after passing through
4C is a diagram showing a situation in which the bare wire in FIG. 4B is soldered to the winding region. Among them, as shown in FIG. 4A, the first guide connector 531 mainly has a hole 5311, a through hole 5312, and a winding region 5313. First, the first guide terminal 5 is riveted continuously to the corresponding hole (not shown) on the rear side 501 of the hole 5311 main body.
11 and the winding region 5313 is formed in a substantially T shape. Then, the bare wire end 551 of the wire 55 is passed through the through hole 5312, and more preferably, the partially insulating sheath 552 is also passed through the through hole 5312 to provide flexibility, as shown in FIG. The winding region 5313 is wound as shown in FIG. Finally, at the bare wire end 551, solder 5
54 is added to proceed with spot fusing to effectively position the bare wire end 551 on the winding region 5313. Of course, the other end 553 of the wire 55 can be further advanced and plugged into a connector insertion hole (not shown) in the corresponding area on the circuit board, or soldered directly onto the circuit board.

In summary, the AC adapter structure according to the present invention has the following advantages over the prior art because the special design of the guide connector forms the electrical connection with the circuit board by the electric wire 55.

(1) Since the guide connectors 431 and 432 in the prior art extend downward and are inserted into the connector insertion holes 31 and 32 of the circuit board 3, the connector insertion hole 3
The distance between 1 and the connector insertion hole must be completed in advance according to the planned structure. On the other hand, since the present invention forms the electrical connection with the circuit board by the electric wire 55, it is applicable to various connector insertion hole distances, or the other end 553 of the electric wire 55 is directly soldered onto the circuit board. Since it is possible, the circuit board of the connector insertion hole is not required, and it can be applied to the circuit board of various standards, and its applicability can be improved.

(2) Since the electric wire 55 has a relatively large flexibility, the thermal stress and mechanical stress generated during the operation of the electronic element 30 on the circuit board 3 facilitates the soldering at the soldering point. It is possible to effectively eliminate the defect of falling off due to no thermal stress and mechanical stress.

(3) The guide connector 531 of the present invention,
Since the through hole 5312 and the winding region 5313 in 532 have a unique structure, the soldering effect can be improved,
The bare wire end 551 can be effectively positioned.

It should be noted that the technical idea of the present invention should not be limited to the above-described embodiments, and simple design changes, additions and substitutions by those skilled in the art can be made without departing from the scope of the appended claims. Both belong to the scope of the present invention.

[Brief description of drawings]

FIG. 1A is an assembly diagram of a conventional power supply device,
(B) is a three-dimensional view of a conventional power supply device.

2A is a three-dimensional view of an AC adapter in the conventional power supply device of FIG. 1A, and FIG. 2B is the AC of FIG.
It is a three-dimensional view of an adapter.

3A is a three-dimensional view of an AC adapter of a preferred embodiment according to the present invention, and FIG. 3B is a rear view of the AC adapter of FIG.

4A is an external view of a guide connector applied to an AC adapter according to the present invention, and FIG. 4B is a view showing a bare wire end of a wire passing through a through hole of the guide connector of FIG. 4A. It is a figure which shows the situation which winds a winding area | region after that, (c) is a figure which shows the situation in which the bare wire in (b) is soldered to a winding area.

[Explanation of symbols]

1 Upper Cover 11 First Recess 2 Lower Cover 21 Third Recess 22 Fourth Recess 3 Circuit Board 30 Electronic Device 31, 32
Connector insertion holes 33, 34 Insertion holes 4 AC adapter 40 Main body 401 Main body rear side 402 Main body bottom 403 Main body top surface 41 Through hole 411 First guide terminal 412 Second guide terminal 413 Ground terminal 421, 422, 423 Connection Area 431 First guide connector 432 Second guide connector 433 Earth connector 44 Support lever 443 Projection structure 5 AC adapter 50 Main body 501 Main body rear side 502 Main body bottom 503 Projection plate 51 Through hole 511 First guide terminal 512 512th 2 guide terminal 513 ground terminal 521, 522, 523 connection area 531 first guide connector 532 second guide connector 533 ground connector 54 support lever 55 electric wire 551 bare wire end 552
Insulation sheath 553 Other end of electric wire 55 554 Solder

Claims (7)

[Claims] 1. A body and at least one guide terminal, each guide terminal being connected to a guide connector having a through hole and a winding region, whereby a bare wire end of the wire passes through the through hole. The structure of the power supply adapter is characterized in that the winding region is wound around and then soldered onto the winding region. 2. The structure of the power adapter according to claim 1, wherein the main body has a projecting plate which is integrally formed with the main body so as to correspond to the winding region. 3. The structure of the power adapter according to claim 1, wherein the power adapter is further provided with a ground terminal and a ground connector. 4. The structure of the power adapter according to claim 1, wherein at least two support levers for inserting into corresponding insertion holes on the circuit board are provided below the main body. 5. The structure of the power adapter according to claim 4, wherein the support lever is formed integrally with the main body, and the other end of the electric wire is electrically connected to the circuit board. 6. The structure of the power adapter according to claim 1, wherein the main body is made of an insulating material, and the partial insulation sheath of the electric wire passes through the through hole. 7. A structure of a guide connector for connecting a bare wire end and an electric wire having an insulating sheath, the structure comprising a through hole and a winding region, wherein the bare wire end and the partial insulation are provided. The structure of the guide connector, wherein the sheath passes through the through hole, and the bare wire end is wound around the winding region and then soldered onto the winding region.