JP3057344B2 - Power plug device - 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 plug device integrally provided in an apparatus main body such as an AC adapter and a battery charger.

[0002]

2. Description of the Related Art Conventionally, A for converting a commercial AC power supply to a DC power supply has been proposed.
An apparatus main body such as a C adapter is integrally provided with a power plug section to be inserted into a power outlet. When the plug pin of the power plug protrudes from the device body such as the AC adapter, the storage property, portability, safety, and the like are impaired. Therefore, the power plug can be stored in the device body when not in use. A power plug device (AC adapter) is also known, for example, from Japanese Utility Model Application Laid-Open No. 61-169971.

In the power plug device disclosed in the publication, a blade block (power plug portion) is rotatably mounted on the adapter body, and when used, the blade (plug pin) is projected from the adapter body, and when not used, the blade block is used. 90
By rotating the plug blade, the blade can be stored inside the adapter body.

[0004]

In general, a power plug device that stores a power plug portion in a rotating manner requires a power feeding mechanism for feeding power from the power plug portion to the device main body. A power supply mechanism using a pair of contact members that come into contact with each other at the rotation position is provided. In addition, since the power plug needs to be selectively stopped at a predetermined position, that is, a use position or a storage position, a click-type stopper mechanism is provided.

However, in the conventional power plug device, since the power supply mechanism and the stopper mechanism are separately configured, the configuration is complicated, and there is a problem that the cost is increased and the size is increased due to an increase in the number of parts.

The present invention has solved the above-mentioned problems in the prior art. By using a power supply mechanism also as a stopper mechanism, the structure can be simplified and the number of parts can be reduced. It is an object of the present invention to provide a power plug device that achieves cost reduction and downsizing.

[0007]

According to the present invention, there is provided a power plug device 1 capable of selectively rotating and displacing a power plug portion 2 integrally provided in a device body B to a use position Pu or a storage position Pc.
In particular, the rear ends of the conductive plug pins 3x and 3y provided in the power plug portion 2 are extended to form the click engaging portions 4x and 4y integrally, and the click engaging portions 4x and 4y are formed. A click-engaged portion 5x having elasticity and conductivity and provided on the device main body B;
Power supply mechanisms 6x and 6y are provided, which also serve as stopper mechanisms that stop at the use position Pu or the storage position Pc when the power plug unit 2 is rotationally displaced by pressing the 5y.

In this case, between the plug pins 3x, 3y and the click engaging portions 4x, 4y, the plug pins 3x, 3y are respectively provided.
y and the middle extension portions 7x, 7 which are perpendicular to the click engagement portions 4x, 4y and are parallel to the rotation axis of the power plug portion 2.
It is desirable to form y integrally. The click engaging portion 4x (the same applies to the 4y side) can be formed by an arcuate engaging end 8x having locking concave portions 4xu and 4xc for locking the click engaged portion 5x. 5
x can be configured by providing a locking projection 10x that locks with the locking recesses 4xu and 4xc of the click engagement portion 4x at the tip of the leaf spring 9x.

[0009]

According to the power plug apparatus 1 of the present invention, the power plug section 2 is selectively rotated to the use position Pu or the storage position Pc.

At this time, the plug pins 3x, 3y, the plug pins 3x, 3y
The intermediate extension portions 7x, 7y integrated with the
Click engaging portions 4x, 4y integral with the click engaging portions 4x, 4y, and click engaged portions 5 which are constantly pressed against the click engaging portions 4x, 4y.
The power is electrically connected through the paths x and 5y, and power is supplied from the power plug unit 2 side to the device main body B side via the power supply mechanisms 6x and 6y.

Further, since the power supply mechanisms 6x and 6y also serve as stopper mechanisms, they are provided on the arcuate engagement end side 8x of the click engagement portion 4x (the same applies to the 4y side) at the use position Pu or the storage position Pc. In the locking recesses 4xu, 4xc,
The locking projection 10x of the click engaged portion 5x presses and locks, and the power plug portion 2 stops at each position Pu or Pc in a click manner.

[0012]

Next, preferred embodiments according to the present invention will be described in detail with reference to the drawings.

First, the configuration of a power plug device 1 according to the present invention will be described with reference to FIGS.

Reference numeral 2 denotes a power plug portion, which is composed of a pair of plug bodies 30x and 30y and a plug body 31, as shown in FIGS. One plug body 30x includes a plug pin 3x, an intermediate extending portion 7x integrally formed in a direction perpendicular to the rear end of the plug pin 3x, and an intermediate extending portion 7x.
Click engaging part 4 integrally formed at right angles from the rear end
x. Further, the other plug body 30y is formed integrally with the plug pin 3y, an intermediate extending portion 7y integrally formed at right angles from the rear end of the plug pin 3y, and a right angle direction from the rear end of the intermediate extending portion 7y. The click engagement portion 4y is provided. In this case, the click engagement portion 4x (same for 4y)
As shown in FIG. 1 and FIG. 7, the power supply plug 2 selectively forms the positions where the locking recesses 4xu and 4xc are formed in the arcuate engaging end 8x. Corresponds to the use position Pu or the storage position Pc. Each of the plug bodies 30x and 30y can be formed by punching one plate material, and the same except that the size of the plug pins 3x and 3y are different and symmetric.

Then, the plug pins 3x, 3y are arranged in parallel with the intermediate extending portions 7x, 7y being outside, respectively.
Plastic plug body 31 by insert molding
Are provided integrally. In this case, the plug body 31 is composed of a body main body 32 covering the rear portions of the plug pins 3x, 3y, and a pair of left and right rotation shaft portions 33x, 33y formed in a circular cross section covering the intermediate extension portions 7x, 7y.

On the other hand, B is a device main body such as a battery charger and has a pair of upper and lower casings 21u and 21.
On one surface of the lower casing 21 (upside down in FIG. 1), for example, a flat bottom surface 21d, a plug housing recess 22 for housing the power plug 2 is provided. The plug housing recess 22 has a relatively large housing space 23 for housing the plug pins 3x and 3y in the front half, and a support recess 24 for supporting the power plug 2 in the rear half. Also, the support recess 2
4, an opening 25 is provided on the bottom surface and the side surface of the concave portion, and a pair of left and right bearing portions 26 shown in FIG.
x and 26y are integrally formed. The bearings 26x, 2
6y is formed in a U shape. In addition, the lateral width of the body main body 32 in the power plug section 2 and the lateral width of the support concave portion 24 are formed so as to substantially coincide with each other.

Therefore, the casing 2 is
When the power plug 2 is inserted from the inside of the housing 1, the body main body 32 is housed inside the support recess 24, and the rotating shafts 33x and 33y are housed inside the bearings 26x and 26y. When the other casing 21u is assembled, the rotating shaft portions 33x and 33y are completely held by bearings (not shown) provided on the casing 21u side.

On the other hand, as shown in FIG. 4, the intermediate portions of the click-engaged portions 5x and 5y formed by strip-shaped leaf springs 9x are fixed inside the casing 21 by screws 27x and 27y. The connection lead wires 51x and 51y are connected to the rear ends of the click engaged portions 5x and 5y by soldering or the like, and semicircular locking projections 10x. Convex part 10x ... click engagement part 4
x, 4y. The leaf springs 9x have conductivity and moderate elasticity. Thereby, the rotating shaft portions 33x, 3
3y is rotatably held by bearings 26x, 26y and leaf springs 9x, and constitutes power supply mechanisms 6x, 6y also serving as stopper mechanisms.

Next, the function of the power plug device 1 according to the present invention will be described with reference to FIGS.

First, when the power plug unit 2 is not used,
The power plug unit 2 can be stored in the storage position Pc shown in FIG. Thereby, the plug pins 3x are completely housed in the plug housing recesses 22. At this time, the locking recess 4x
c are the locking projections 10x in the click engaged portions 5x.
, And the position of the plug pins 3x is regulated by contacting a part of the bottom surface of the plug housing recess 22.

On the other hand, when the power plug unit 2 is used, the power plug unit 2 can be set at the use position Pu shown in FIG. In this case, the user puts his hand in the housing space 23 of the casing 21 and lifts the plug pins 3x.
What is necessary is just to make it rotate and displace, and by this, plug pin 3x ...
Project at right angles from the bottom surface 21d. At this time, the locking recess 4
xu... are the click protrusions 5x.
x, and a part of the body main body 32 is in contact with the inner edge of the opening 25 to regulate the position.

In each of the positions Pu and Pc, the power plug 2 and the device main body B are provided with a plug pin 3x, an intermediate extension 7x integrated with the plug pin 3x, and an intermediate extension 7x. An integral click engagement portion 4x, and a click engagement portion 5x that is constantly pressed against the click engagement portion 4x.
Are electrically connected to each other through a path of..., And power is supplied from the power plug section 2 side to the apparatus main body B side through the power supply mechanism 6x.

The embodiment has been described in detail above.
The present invention is not limited to such an embodiment.
For example, a battery charger is illustrated, but the present invention can be similarly applied to other devices. In addition, the configuration, shape, material, quantity, and the like of the details can be arbitrarily changed without departing from the gist of the present invention.

[0024]

As described above, in the power plug device according to the present invention, the rear end of the conductive plug pin provided on the power plug portion is extended to integrally form the click engaging portion, and the click engaging portion is formed. A stopper mechanism that has elasticity and conductivity, and stops at a use position or a storage position when the power plug portion is rotationally displaced by pressing a click-engaged portion provided on the device main body. The provision of the power supply mechanism has a remarkable effect that the simplification of the configuration and the reduction in the number of parts can improve the assemblability, further reduce the cost and reduce the size.

[Brief description of the drawings]

FIG. 1 is a partially longitudinal side view showing a state in which a power plug portion of a power plug device according to the present invention is stored in a storage position;

FIG. 2 is a partially longitudinal side view showing a state where a power plug portion of the power plug device is set to a use position;

FIG. 3 is a bottom view of a device main body including the power plug device.

FIG. 4 is an internal configuration of a device main body including the power plug device,

FIG. 5 is a bottom view of a power plug portion of the power plug device.

FIG. 6 is a front view of a power plug unit in the power plug device.

FIG. 7 is a side view clearly showing an engagement state between a click engagement portion and a click engagement portion in the power plug device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Power plug device 2 Power plug part 3x Plug pin 4x ... Click engaging part 4xu Locking concave part 4xc Locking concave part 5x ... Click engaged part 6x ... Power supply mechanism 7x ... Intermediate extension part 8x ... Engaging end side 9x ... Leaf spring 10x Locking projection B Equipment main body Pu Usage position Pc Storage position

Claims (4)

(57) [Claims] 1. A power plug device, wherein a power plug unit integrally provided in an apparatus main body is selectively rotatable and displaceable to a use position or a storage position, the power plug device having conductivity provided in the power plug unit. Extending the rear end of the plug pin to integrally form the click engagement portion, and pressing the click engagement portion having elasticity and conductivity and being provided on the main body of the device with the click engagement portion. A power supply mechanism which also serves as a stopper mechanism that stops at a use position or a storage position when the power plug section is rotationally displaced. 2. An intermediately extending portion which is perpendicular to the plug pin and the click engaging portion and parallel to the rotation axis of the power plug portion is integrally formed between the plug pin and the click engaging portion. The power plug device according to claim 1, wherein 3. The power plug device according to claim 1, wherein the click engaging portion is formed by an arcuate engaging end having a locking concave portion for locking the click engaged portion. 4. The power supply according to claim 1, wherein the click-engaged portion is formed by providing a locking convex portion for locking the locking concave portion of the click engaging portion at the tip of the leaf spring. Plug device.