JP2787312B2 - Rechargeable electrical equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a rechargeable electric device represented by an electric shaver, a portable light and the like.

[Conventional technology]

As conventional technology of this kind of rechargeable electric equipment,
-182376. Fig. 11 (a) and (b)
As shown in FIG. 1, the main body case 1 is provided with two types of external connection portions, a fixed socket 8 and a movable plug 9 which enable power to be supplied from an external power supply to the electric circuit 5 in the main body case 1. Makes it possible to move the plug blade 21 freely, and to open the connection between the fixed socket 8 and the electric circuit 5 as shown in FIG. 11 (b) in conjunction with the protruding operation of the plug blade 21. .

According to this configuration, a power supply is directly supplied from the commercial power supply to the electric circuit 5 via the power supply cord 7 by inserting the socket 15 at one end of the power supply cord 7 into the fixed socket 8. It is possible to take a usage form of charging the built-in storage battery via the. Further, by projecting the plug blade 21 of the movable plug 9 and inserting the plug blade 21 into an outlet on the wall surface, it is possible to take a use form in which the battery is charged without a power cord particularly at a travel destination.

When the movable plug 9 is used, the plug blade
Since the connection between the fixed socket 8 and the electric circuit 5 is opened by projecting the 21, it is possible to prevent equipment damage due to duplication of input signals.

[Problems to be solved by the invention]

However, in the above conventional example, the fixed socket 8 is always opened to expose the internal socket pins 14. For this reason, for example, a movable plug 9
During charging with the plug blade 21 inserted, water droplets may enter the fixed socket 8 and adhere to both socket pins 14. In particular, if the fixed type socket 8 contains lint or lint-like dust, the penetrated water penetrates and diffuses through these foreign substances, and both socket pins 14
May be short-circuited.

Also, when charging with the movable plug, the fixed socket on the surface different from the movable plug can be seen, so that the user always feels anxiety of an electric shock accident during charging.

The present invention, in a rechargeable electric device including such a fixed socket and a movable plug, obviates the above-mentioned problem caused by water or the like entering the fixed socket during charging using the movable plug. The purpose is to prevent.

It is another object of the present invention to allow a user to use the portable plug without worrying about electric shock even when charging with a movable plug.

[Means for solving the problem]

The rechargeable electric device according to the present invention includes a fixed socket 8 capable of supplying power to the electric circuit 5 from an external power supply in a main body case 1 containing an electric circuit 5 including a charging device, and both sides of the fixed socket 8. A pair of plug blades 21, 21 that straddle the plug socket 21, and the plug blades 21, 21 that can be extended and retracted, and are arranged on a different surface of the main body case 1 from the fixed socket 8.
23, and the fixed socket 8
And a movable cover 27 that opens and closes. The movable plug 9 includes an operation button 28, and the operation button 28
Thus, the plug blades 21 are slidable between a use state in which the plug blades 21 project from the plug blade outlet 23 and a non-use state in which the plug blades 21 are retracted into the plug blade outlet 23. The movable cover 27 is
The fixed socket 8 is provided integrally with the movable plug 9 and interlocks with the sliding operation of the plug blades 21 to the use state.
And the fixed socket 8 is opened in conjunction with the sliding operation of the plug blades 21 to the non-use state.

[Action]

When the plug blade 21 of the movable plug 9 is protruded and slid in use, the movable gabber 27 integrally provided on the movable plug 9 is different from the protruding surface of the plug blade 21 of the main body case 1 with this slide. This automatically closes the fixed socket 8 disposed on the surface, so that when the plug blade 21 is plugged into the wall outlet of the lavatory and charged, water splashes onto the electrical equipment. No matter what happens, it does not penetrate into the fixed socket 8.

Further, when the movable plug 9 is used, the fixed socket 8 is always invisible from the outside, so that the user does not feel uneasy about an electric shock accident.

Furthermore, the fixed socket 8 and the movable plug 9 are arranged in the main body case 1 so that a pair of plug blades 21 and 21 straddle both sides of the fixed socket 8 so that the fixed socket 8 is movable.
Can be compactly stored in the space required for assembling the movable plug 9, and the size of the rechargeable electric device can be reduced.

〔Example〕

A case where an embodiment of the present invention is applied to a rechargeable electric shaver will be described with reference to FIGS. 1 to 10.

In FIG. 9, this electric razor is
A rotary razor unit 3 driven by an internal motor 2 is mounted on the head section of the head section in an axially inclined posture.
An electric circuit 5 including a rechargeable battery 4, a charging circuit and a motor driving circuit in a grip portion of the main body case 1 (see FIG. 8).
And a switch knob 6 that slides up and down on the front of the main body case 1.

A fixed socket 8 that can supply power to the electric circuit 5 via a power cord 7 is provided on a bottom portion of the main body case 1.
A plug case incorporating a movable plug 9 operable to switch between a non-charging position shown in the drawing and a charging position shown in FIG.
10 is installed.

In FIG. 1, the fixed socket 8 includes a socket case 12 having a socket hole 11 facing downward,
A female socket 15 at one end of the power cord 7 is removably inserted into the socket hole 11 from below.

The socket pin 14 is inserted into each of the holes 19 and 20 provided in the plug plate 17 and the plug substrate 18 which are integrally overlapped with each other by the caulking pin 16, and passes through the large-diameter portion 14 a provided above the pin 14. A vertical stopper is provided. Note that the plug plate 17 is, as shown in FIGS. 2 and 7,
It is engaged and fixed to the plug case 10 via locking claws 17a provided on both front and rear sides thereof.

1 to 3, the movable plug 9 is a pair of plug blades extending over the front and rear sides of the socket case 12.
21 ・ 21 and a blade base 22 that supports the base end of the
22 is guided by a guide 17b provided on the lower surface of the plug case 10 and the plug plate 17, and is slidably supported in the left-right direction. The plug case 10 is formed in a hollow box shape penetrating vertically, and is incorporated into the lower part of the main body case 1 so that only the left and right vertical wall surfaces 10a and 10b are exposed from the main body case 1. And the vertical wall surface 10a on the left side of the plug case 10
The plug blade outlet 23 is opened.

The plug blade outlet 23 can be opened and closed by a plug cover 24 slidably mounted on the main body case 1 up and down. The plug cover 24 has a spring wire 25 bent in a U shape when viewed from the front.
In the non-use state in which the plug blade 21 is retracted, the plug blade 21 is in the closed posture (see FIG. 1).

1 and 2, a cover plate 26 is integrally extended in a cantilever manner toward the blade base 22 side in the socket case 12, and a movable cover 27 is attached to the blade base 22 on the lower surface side of the cover plate 26. Are connected together in a detour form. The movable cover 27 opens the socket hole 11 of the fixed socket 8 when the movable plug 9 is not in use as shown in FIG. 1 and when the movable plug 9 is in use as shown in FIG. Closes the entrance of the socket hole 11.

1 and 3, the blade base 22 is provided with an operation button 28 for sliding the blade base 22 left and right. The operation button 28 has a recess formed on the lower surface of the blade base 22.
An engagement projection 30 is provided on the 29 so as to be slidable up and down, and an engagement hole 31 through which the cover plate 26 of the socket case 12 is inserted. Then, the blade rest 22 and operation buttons
The operation button 28 is slid downwardly by a compression coil spring 32 interposed between the cover coil 26 and the compression button spring 32 to receive and support the upper inner surface of the engagement hole 31 on the upper surface of the cover plate 26.

The upper surface of the cover plate 26 has a projection 33 for positioning as shown in FIG. 7, and when the movable plug 9 is not in use, as shown in FIG. On the right side of the portion 33, the movable plug 9 is prevented from moving in the plug blade projecting direction. To put the movable plug 9 in use, first, the operation button 28 is pushed in against the compression coil spring 32 to release the engagement with the projection 33, and then slide leftward as it is. When 28 is released, the compression coil spring 32 moves and restores
It engages with the left side of 33 (see FIG. 4), whereby the retraction of the plug blade 21 is prevented. When the movable plug 9 is switched to the non-use state, the operation button 28 is pushed and slid.

As shown in FIG. 4, the plug cover 24 must be pushed up with a finger to open the plug blade outlet 23 before the switching operation of the movable plug 9 to the use state. On this occasion,
Since the plug cover 24 is always biased downward,
If the plug blade 21 projects slightly from the plug blade outlet 23, the finger may be released from the plug cover 24. It is not necessary to operate the plug cover 24 when the movable plug 9 is switched to the non-use state.

Next, the connection relationship between the fixed socket 8 and the movable plug 9 and the electric circuit 5 will be described.

In FIGS. 1 and 3, a movable terminal block 34 is mounted on the plug plate 17 and the plug substrate 18 which are integrally integrated with each other so as to be movable left and right. That is, as shown in FIG. 7, an inverted T-shaped leg 35 having a vertical leg 35a and a horizontal leg 35b projects downward from the movable terminal block 34. Its legs
The vertical leg 35a of 35 is inserted through slits 36 and 37 formed in the plug plate 17 and the plug substrate 18, and the horizontal leg 35b is slidably supported on the lower surface of the plug plate 17 and the upper surface of the blade base 22. The movable terminal block 34 moves with the left and right movement of the movable plug 9 by being fitted between the pair of left and right engagement protrusions 38 provided on the movable plug 9.

A pair of movable terminals 39, 39 are fixed to the lower surface of the movable terminal block 34 by caulking, and the movable terminals 39, 39 elastically contact the upper surface of the plug board 18.

5 and 7, two sets of lines 40 and 41 are formed on the upper surface of the plug substrate 18 by printing.
Each 40 is connected to the electric circuit 5 shown in FIG. 8 via a lead wire 42, and one ends of the lines 41 are connected to the socket pins 14. In the plug substrate 18, elongated holes 44, 44 are formed, into which a pair of positioning pieces 43, 43 projecting from the upper surface of the plug plate 17 are engaged, and an opening 45 for exposing a terminal is connected to each elongated hole 44. Then, as shown in FIG. 6, a part of the fixed terminal 46 sandwiched between the plug plate 17 and the plug substrate 18 faces each opening 45. The fixed terminal 46 includes an inverted U-shaped locking piece 46a inserted and supported in a locking hole 47 of the plug plate 17 shown in FIG. 7, a bent protruding portion 46b facing the opening 45, and a slit of the plug plate 17. Slide contact portion 46c extending downward through 48
Each sliding contact portion 46c elastically contacts the upper edge of each plug blade 21.

In FIG. 5, when the movable plug 9 is in a non-use state as shown by a solid line, the movable terminals 39 and 39 come into contact over the lines 40 and 41 to connect the socket pins 14 and 14 to the electric circuit 5. At the same time, the plug blades 21 are disconnected from the electric circuit 5 (FIG. 8A). Also,
In FIG. 5, when the movable plug 9 is switched to the use state as shown by a two-dot chain line, the movable terminals 39, 39 are connected to the line 40 and the fixed terminal.
The plug blades 21.2
1 and the electric circuit 5 and the socket pins 14
-The state where the contact between 14 and the electric circuit 5 is cut off (Fig. 8 (b))
Becomes

(Another embodiment)

When the plug blade outlet 23 of the movable plug 9 is configured as a pair of small holes that allow only the plug blade 21 to retreat, the plug cover 24 can be omitted.

〔The invention's effect〕

According to the rechargeable electric device of the present invention, the fixed socket 8 is closed by the movable cover 27 in conjunction with the switching of the movable plug 9 to the projecting use state. When charging using the water droplets, water does not enter the fixed socket 8,
A situation in which water adheres to the pair of socket pins 14 in the fixed socket and short-circuits the electric circuit can be avoided beforehand.

During charging using the movable plug 9, the socket pins 14 of the fixed socket 8 become invisible from the outside, so that the switching of the circuit ensures electrical safety and still gives the user a risk of electric shock. It has the advantage that it does not give.

The movable cover 27 moves together with the sliding operation of the plug blade 21 of the movable plug 9 to the projecting use state and the non-use state, and automatically opens and closes the fixed socket 8. It is easy to use without requiring.

Also, the movable plug 9 is mounted on the main body case 1 so that the pair of plug blades 21 straddles both sides of the fixed socket 8.
Since the fixed type socket 8 is disposed, the fixed socket 8 can be compactly accommodated in a space required for assembling the movable plug 9, and the size of the rechargeable electric device can be reduced.

[Brief description of the drawings]

1 to 10 show an embodiment of a rechargeable electric device according to the present invention. FIG. 1 is a cutaway front view of a main part when a movable plug is not used, and FIG. FIG. 3 is a cross-sectional view taken along the line II-II in FIG. 1, FIG. 3 is a cross-sectional view taken along the line III-III in FIG. 1, FIG. FIG. 6 is a longitudinal sectional front view of the main part, FIG. 7 is an exploded perspective view of the main part, and FIGS. 8 (a) and (b) show when the movable plug is not used and when it is used. FIG. 9 is an overall perspective view of the electric shaver, and FIG. 10 is a perspective view of a main part in a state where the movable plug is used. 11 (a) and 11 (b) show a conventional example, FIG. 11 (a) is a longitudinal sectional view of a main part of the movable plug in a non-use state, and FIG. 11 (b) is a movable type. It is a longitudinal cross-sectional view of the principal part in the use state of a plug. 1 ... body case, 5 ... electric circuit, 8 ... fixed socket, 9 ... movable plug, 14 ... socket pin, 21 ... plug blade, 23 ... plug blade outlet, 27 ... Movable cover.

Claims (1)

(57) [Claims] 1. A fixed socket 8 capable of supplying power from an external power supply to the electric circuit 5 in a main body case 1 containing an electric circuit 5 including a charging device and the like, and a pair of fixed sockets 8 straddling both sides of the fixed socket 8. Plug blade 21
A movable plug 9 having a plug blade 21 and a plug blade outlet 23 disposed on a different surface of the main body case 1 from the fixed socket 8; A movable cover 27 for opening and closing the movable plug 8, the movable plug 9 includes an operation button 28, and the operation state that the plug blades 21 and 21 are projected from the plug blade outlet 23 by the operation button 28; The movable cover 27 is provided integrally with the movable plug 9 to allow the plug blades 21 to be used when the plug blades 21 are in use. A rechargeable electric system characterized in that the fixed socket 8 is closed in conjunction with the sliding operation, and the fixed socket 8 is opened in conjunction with the sliding operation of the plug blades 21 to the non-use state. machine.