JP2593168Y2 - Power supply - 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 device having a plug blade that can be retracted.

[0002]

2. Description of the Related Art In a power supply device such as a DC adapter for converting a commercial alternating current to a direct current, a plug blade can be protruded and retracted into a recess for accommodating a plug blade in a housing to reduce the size when not in use. There are many things we plan.

[0003] In the conventional power supply device, the plug is stably held in the device only by assembling the housing.
That is, until the assembly of the product is completed, the inspection of the movement, the holding state, the conduction state, and the like of the incorporated plug cannot be performed, and the failure of the assembled state of the plug can be known for the first time after the product assembly is completed. For this reason, when a defect is found, the assembled product must be disassembled and reassembled, which has been a cause of the decrease.

In a conventional power supply device, a circuit board is not provided in a space including a thickness for a plug blade accommodating recess in a housing, and a circuit board provided in another space is used. Circuit was built.
In such a conventional power supply device, it has been difficult to further improve the function as the power supply device while avoiding an increase in size.

The present invention has been made in view of the above-mentioned problems in the prior art, and has as its object the object of the present invention to assemble a plug incorporated in a housing member before product assembly is completed. motion, the holding state is to provide a power equipment capable of performing an inspection of such a conductive state.

[0006]

In order to achieve the above object, a power supply device according to the present invention comprises a plug blade, a rotating shaft,
A plug having a plug blade portion and a conductive contact portion is provided, the plug blade portion is exposed from a through hole facing the plug blade housing recess in the housing, and the plug blade portion can protrude and retract from the plug blade housing recess. As described above, the power supply device wherein the plug is rotatably held at a rotation shaft portion,
A holding member fitted and fixed to the housing member in a state where the rotation shaft portion is rotatably supported by a partial bearing portion having an open portion on the inner side of the housing member forming a part of the housing; The rotating shaft is sandwiched between the bearings.

[0007]

[0008]

According to the first aspect of the present invention, when the rotating shaft portion of the plug is inserted into the partial bearing portion from an open portion on the inner side of the housing member, and the holding member is fitted and fixed to the housing member. The rotating shaft portion is held by the holding member and the partial bearing while being rotatably supported by the partial bearing portion, and the plug is incorporated into the housing member. Therefore, before the completion of the assembly of the housing, that is, before the completion of the assembly of the product, it is possible to inspect the movement of the plug, its holding state, the conduction state, and the like.

[0009]

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. FIGS. 1 and 2 show a power supply device (DC adapter for converting commercial AC to DC) as one embodiment of the present invention.
FIG. 1 is an exploded perspective view of a main part, and FIG. 2 is a crushed sectional view.

The housing 10 of this power supply device comprises a first housing member 12 forming the bottom side in FIG. 2 and a second housing member 14 forming the lid side. In addition,
The manner of dividing the housing and the number thereof are not limited to this.

The first housing member 12 has a relatively shallow box shape as a whole, and a ridge 16 is provided inside the opening edge. The first housing member 12 is provided with a plug blade accommodating recess 18 at the center in the front-rear direction of the left bottom portion in FIG. The plug blade housing recess 18 opens leftward and downward, and has a through hole 20 at the upper right.

Semicircular partial bearing portions 30 and 32 having open portions 26 and 28 on the upper side, respectively, are provided on the upper portions of both side walls 22 and 24 facing the through hole 20 in the plug blade receiving recess 18. A portion of the plug blade housing recess 18 facing the lower right portion of the through hole 20 is formed as a first projection 34 which is slightly raised and projects leftward. The left surface of the first protrusion 34 is formed slightly lower left.

The plug 36 has a columnar rotating shaft 38,
A plug blade member 42 and a plug blade holding portion 44 are provided. The plug blade members 42 are held in parallel by the plug blade holding portions 44 on both sides of the intermediate portion 38 a of the rotating shaft portion 38. On both outer sides of the plug blade holding portion 44, the rotating shaft portion 38 is provided.
Is located. A portion of the plug blade member 42 that protrudes long from the plug blade holding portion 44 is the plug blade portion 40, and a side surface arc-shaped end surface of the portion protruding to the opposite side is the contact surface portion 48. Accordingly, the plug blade portion 40 and the contact surface portion 48 are electrically connected. In addition, the plug blade holding part 44 and the rotating shaft part 38 are made of insulating synthetic resin.

The holding member 50 is formed of a bent plate having an L-shaped side surface. The holding member 50 has an insertion portion 54 protruding leftward at the lower left end of the flat plate portion 52 in the figure, and is located to the lower right of the flat plate portion 52. A lower portion of the vertical plate portion 56 has a second protrusion 58 whose lower end protrudes rightward. The right surface of the second protruding portion 58 is formed slightly lower left. The width in the front-rear direction of the flat plate portion 52, that is, the width in the depth direction of the paper surface in FIG.

As shown in FIG. 1, the projecting portion 38b of the rotating shaft 38 is partially inserted from above the inside of the first housing member 12 which is opened upward while the plug blade portion 40 is inserted through the through hole 20. When inserted into the bearings 30 and 32, the outer peripheral surface of the lower half of the projection 38b is rotatably supported by the partial bearings 30 and 32.

In this state, the insertion portion 54 of the holding member 50
Is inserted into the plug blade accommodating recess 18 from the left end of the through hole 20 and the second protrusion 58 is pushed into the lower left of the first protrusion 34, so that the left surface of the first protrusion 34 and the second protrusion 5
Since the right side of 8 is formed slightly lower left,
In particular, the second protrusion 58 is pushed into the lower left portion of the first protrusion 34 relatively smoothly while the side of the holding member 50 is elastically deformed. Then, between the two plug blade holding portions 44, the rotating shaft portion 3
8 is supported from above by the lower surface of the flat plate portion 52, and the flat shaft portion 52 and the partial bearing portions 30 and 32 hold the rotary shaft 38 in a rotatable state. On the other hand, the holding member 50 is supported from below by the rotating shaft 38 and is in a state of being fitted and fixed to the first housing member 12. Of course, various other means can be adopted as specific means for fitting and fixing.

In this state, the position where the plug blade portion 40 protrudes downward as shown by the solid line in FIG. 2 and the position where the plug blade portion 40 is immersed in the plug blade housing recess 18 as shown by the two-dot chain line. The plug 36 can be rotated by about 90 degrees between the first and second positions, so that the movement of the plug 36 and its holding state can be inspected.

In the space B60 above the plug blade receiving recess 18 in FIG.
A circuit board B62 is provided. And the circuit board B6
A circuit board A66 is provided in a space A64 below the height 2 and including the height of the plug blade accommodating recess 18.

A control circuit for a battery charger is mounted on the lower side of the circuit board A66.
Is electrically connected to The circuit board B62 has
On the upper side, a converter circuit including a transformer and the like is mounted. Reference numeral 68 denotes an energization display LED, and reference numeral 70 denotes a power cord for guiding DC converted from AC to the target device.
In addition to the circuit board B62 provided in the space B60, the space A
Since the circuit board A66 is also provided in the circuit 64, the circuit can be efficiently incorporated in the housing 10 by using the circuit board A66 and the circuit board B62.

Reference numeral 72 denotes a press contact terminal. This press contact terminal 7
2, one end of the elongated elastic metal plate is passed through the fixing hole 74 of the circuit board B62 from above, the lower end protruding downward is soldered to a terminal of the circuit board B62, and the elastic metal plate is bent. Along the upper surface of the circuit board B62, the other end of the elastic metal plate is inserted into the insertion hole 76 of the circuit board B62, and the free end protruding obliquely downward of the circuit board B62 is pressed downwardly into a press-contact portion 78. It is assumed that.

The circuit board B on which the plug 36 is held by the first housing member 12 and the pressure contact terminals 72 are provided
In a state in which the plug blade portion 62 is incorporated in the first housing member 12, as shown by a solid line in FIG.
Is projected downward, the contact surface portion 48 presses the press contact portion 78 of the press contact terminal 72 upward, so that the press contact terminal 72 and the plug blade member 42 are brought into conduction. When the plug blade portion 40 is immersed in the plug blade housing recess 18 as shown by a two-dot chain line, the plug blade member 42 including the contact surface portion 48 is separated from the press contact portion 78 of the press contact terminal 72, and the conduction state is released. Is done. Therefore, at this stage, it is possible to inspect the conduction state of the plug 36 and the like.

The second housing member 14 has a relatively deep box shape as a whole, and a ridge 80 is provided outside the opening edge so as to fit into the opening edge of the first housing member 12. . By attaching the second housing member 14 and covering devices and the like mounted on the circuit board B62, assembly of the power supply device is completed. Note that the energization display LED 68 is exposed from the display hole 82.

FIG. 3 is a sectional view of a main part of a power supply device according to another embodiment of the present invention. The press contact terminals 84 in this embodiment are formed by bending both ends of an elastic metal plate to form a circuit board B.
The lower portion is inserted through fixing holes 88 and 90 provided in the lower portion 86 from below, and the lower portion is soldered to the terminals of the circuit board B86, and a part of the elastic metal plate is projected obliquely downward to press the contact portion downwardly biased. 92.

As shown by a solid line in FIG.
When 0 is directed downward, the contact surface portion 48 presses the press contact portion 92 of the press contact terminal 84 upward, so that the press contact terminal 84 and the plug blade member 42 are brought into a conductive state. When the plug blade portion 40 is turned to the left as shown by the two-dot chain line, the plug blade member 42 including the contact surface portion 48 is separated from the press contact portion 92 of the press contact terminal 84, and the conduction state is released. The meanings of the symbols other than those described above are the same as those in FIGS. 1 and 2.

[0026]

According to the power supply device of the first aspect, before the assembly of the product is completed, the movement of the plug incorporated in the housing member,
Inspection of the holding state, conduction state, etc. is possible, so compared to the conventional power supply unit which was able to know for the first time the failure of the plug installation state after the completion of product assembly, as a whole including inspection and reassembly etc. Production efficiency is improved. In addition, since the entire assembly is performed with the plug incorporated in the housing member in advance, the assembly is easier and more reliable than the conventional device in which the plug is not stably held until the assembly of the housing is completed. Becomes

[0027]

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a main part.

FIG. 2 is a fragmentary sectional view.

FIG. 3 is a sectional view of a main part.

[Description of sign]

 DESCRIPTION OF SYMBOLS 10 Housing 12 1st housing member 18 Plug blade accommodation recessed part 20 Through-hole 26 Opening part 28 Opening part 30 Partial bearing part 32 Partial bearing part 36 Plug 38 Rotating shaft part 40 Plug blade part 48 Contact surface part 62 Space B 62 Circuit board B 64 space A 66 circuit board A

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) H01R 13/46 302 H01R 31/06 H02M 7/04

Claims (1)

(57) [Scope of request for utility model registration] A plug having a plug blade portion, a rotating shaft portion, and a contact portion electrically connected to the plug blade portion, wherein the plug blade portion is exposed from a through hole facing a plug blade housing recess in a housing. A power supply device in which the plug is rotatably held at a rotation shaft portion so that the plug blade portion can protrude and retract with respect to the plug blade housing recess. In a state where the rotation shaft portion is rotatably supported by a partial bearing portion having an open portion on the inner side, the rotation shaft portion is sandwiched by the holding member fitted and fixed to the housing member and the partial bearing. Power supply.