JP2696343B2 - Rechargeable small electric equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a small electric device having a built-in rechargeable battery, and takes measures to recover the rechargeable battery.

[Conventional technology]

In recent years, rechargeable razors and other small electric appliances have become mainstream because rechargeable batteries can be used repeatedly as a power source compared to dry batteries, but rechargeable batteries such as Ni-Cd batteries are harmful to cadmium and the like. Because of the use of substances, it is not desirable to dispose of the entire equipment everywhere in terms of pollution prevention, and attention should be paid to the effective use of rare metals.

Therefore, it is necessary to remove and collect the rechargeable battery from the inside of the device before disposal.

[Problems to be solved by the invention]

However, unlike rechargeable batteries, rechargeable batteries cannot be easily removed from equipment. When a contact terminal plate such as a coil spring or leaf spring is used as a storage battery in a device similar to a dry battery, the contact resistance increases with time and a large current can be taken out. I can't show it. Therefore, it is absolutely necessary that the rechargeable battery be firmly connected and fixed to the circuit in the device by soldering or the like. In such a state of the rechargeable battery, unless the soldered part is removed or the lead wire is cut with a blade or the like,
The rechargeable battery cannot be removed from the device.

In addition, since it is difficult to determine from which part of the device the rechargeable battery is stored inside the device, it is necessary to break the device when removing it, but such destruction is not an easy task. In particular, if the removal of the rechargeable battery is performed by an actual general user, not by the service personnel of the device, since there is no special removal jig,
There was no difficulty. In addition, there is a risk of electric shock if the rechargeable battery is accidentally removed while the device is being connected to an external power supply and charging.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the conventional problems described above, to simplify the removal of a rechargeable battery, and to contribute to facilitation of the collection operation.

Another object of the present invention is to improve the safety of removing the rechargeable battery by preventing electric shock when the rechargeable battery is removed.

[Means for solving the problem]

In order to achieve the above object, in the rechargeable small-sized electric device of the present invention, a part of the case, which is a part of the main case, containing the rechargeable battery is detachably attached so that the rechargeable battery can be taken out. In addition, there is provided a means for preventing the case from being detached only when the case is in a charged state.

[Action]

When the battery is not normally charged, the rechargeable battery can be easily taken out by detaching a part of the case from the main body case.

At the time of charging, a part of the case cannot be detached from the main body case, so that the rechargeable battery cannot be taken out and an electric shock accident can be prevented.

First Embodiment A first embodiment in which the present invention is applied to a rechargeable electric shaver will be described with reference to FIGS. 1 to 3.

In FIG. 1 and FIG. 2, a rectangular cylindrical main body case 1 of the electric razor has a razor blade unit 2
Are provided at the bottom thereof with charging plugs 3 which can be freely moved in and out. A razor blade driving motor M (see FIG. 3), a wiring board 4, and the like are housed and arranged inside the main body case 1.

A plug blade outlet 6 through which the plug blade 5 of the charging plug 3 retreats is provided on one side surface 1a of the main body case 1, and a case opening 7 is arranged near the plug blade outlet 6.
Is opened over three sides of one side surface 1a of the case 1 and a front surface 1b and a rear surface 1c intersecting the one side surface 1a.

A pattern corresponding to the circuit shown in FIG. 3 is formed on the wiring board 4, and a rechargeable battery 8, such as a Ni-Cd battery,
The transformer 9 and the switch 11 are mounted. Second
As shown in the figure, the rechargeable battery 8 has the negative anode terminals 12 and 13 connected and fixed to the lead pieces 14 and 15 on the substrate 4 by soldering or the like.
At least the rechargeable battery 8 on the wiring board 4 is arranged so as to face the case opening 7.

The rechargeable battery 8 is detachably attached to the wiring board 4. For example, at least the peripheral portion 4a of the terminal connection portion of the wiring board 4 that is connected to the terminal of the rechargeable battery 8 is cut along the cut-off line 16 by a large number of small holes or grooves.

A battery cover 17 having a U-shaped cross section, which constitutes a part of the case of the main body case 1, is attached to the case opening 7 so as to be openable in the same direction A as the projecting direction of the plug blade 5. The battery cover 17 has a finger slip preventing portion 10 and a predetermined number of elastically deformable engaging claws 18. It is freely detachable from the rim. The battery cover 17 maintains the closed state of the case opening 7 by engaging the engaging claws 18 with the rim of the case opening 7, and the battery cover 17 holds the finger slip stopper 10 by hand. When pulled in the direction A, the engagement claw 18 is disengaged from the edge of the case opening 7 and detached from the main body case 1. The battery cover 17 is provided with a window 19 through which the presence of the rechargeable battery 8 can be visually recognized even from the outside.

Now, in order to charge this device, as shown in FIG. 1, the plug blade 5 is protruded and inserted into an outlet 20 attached to a wall or an outlet at one end of a power cord. In such a charged state, since the outlet 20 is present near the opening direction A of the battery cover 17,
17 cannot be opened because the outlet 20 is in the way. Therefore, at the time of this charging, there is no possibility that the rechargeable battery 8 is erroneously taken out, which is safe.

However, when the battery is not charged, the battery cover 17 can be removed, so that the rechargeable battery 12 can be taken out from the wiring board 4 by folding it along the folding line 16.

Note that the charging plug 3 may be configured to be able to move out and back by a well-known rotating operation, in addition to the above-described form in which the charging plug 3 can move out and back.

Second Embodiment FIGS. 4 and 5 show a second embodiment of the present invention. In this embodiment, a case opening 7 is provided on the bottom side of the main body case 1, and a cut-out portion 4 a protrudes from the wiring board 4 in the main body case 1 toward the case opening 7.
The rechargeable battery 8 is mounted on 4a, and the socket pins 21 mounted on the substrate 4 are projected toward the case opening 7. A battery cover 17 constituting a part of the case of the main body case 1 is detachably attached to the case opening 7. In this case, the battery cover 17 is a charging plug receiving port 24 through which a plug 23 of a power cord 22 is inserted and removed. And a window 19 for recognizing the rechargeable battery, and an elastically deformable engaging claw 18 for engaging and disengaging the claw 18 with the edge of the case opening 7. The closed state of the case opening 7 is maintained. When the battery cover 17 is closed, the socket pin 21 protrudes into the charging plug receiving port 24.

With this configuration, the power cord 22
When the plug 23 is inserted into the plug receiving port 24, the plug 23 becomes an obstacle and urges the battery cover 17 to be prevented from being removed. Therefore, also in this case, the rechargeable battery 8 cannot be removed by mistake, and There is no fear.

When the plug 23 is pulled out from the charging plug receiving port 24, the battery cover 17 can be removed, so that the rechargeable battery 8 can be removed from the wiring board 4 by this removal.

Third Embodiment FIG. 6 shows a third embodiment of the present invention. This embodiment and the second embodiment are different from the first embodiment in that a case opening 7 is provided on the bottom side of the main body case 1 and the rechargeable battery 8 is mounted on the wiring board 4 in the main body case 1 so as to be cut along the fold line 16. Are facing each other in the case opening 7, and the case opening 7 is configured such that a battery cover 17 constituting a part of the case of the main body case 1 is removably attached to the case opening 7.
17 is different in that a charging plug 3 is provided so as to be able to move in and out.

In such a configuration, the charging plug 3 is connected to the outlet 20 in the same manner as in the charging mode in the first embodiment.
At this time, the battery cover 17 cannot be removed at this time, and the rechargeable battery 8 is not accidentally taken out.

When the battery is not charged, the battery cover 17 can be removed and the rechargeable battery 17 can be taken out in the same manner as in the first and second embodiments.

Fourth Embodiment FIG. 7 shows a fourth embodiment of the present invention. This embodiment is basically the same as that of the second embodiment. However, in the second embodiment, the socket pins 21 are provided on the main body case 1 side. 21 is provided on the side of the charging plug receiving port 24 of the battery cover 17 constituting a part of the case of the main body case 1, and when the battery cover 17 is attached to the case opening 7, one end 21 a of the socket pin 21 becomes a pin on the substrate 4 side. The only difference is that they are inserted into the holes 31 to be connected.

Fifth Embodiment FIGS. 8A, 8B, and 8C show a fifth embodiment of the present invention. In this embodiment, the case opening 7 is provided on one side surface of the main body case 1 and the charging plug receiving port 24 is provided on the bottom side surface.
The battery cover 17 constituting a part of the case is detachably attached. Then, between the battery cover 17 and the charging plug receiving port 24, when the power cord side plug 23 is inserted into the charging plug receiving port 24, the battery cover 17 is locked and cannot be opened. A locking means is provided to enable opening. As the locking means, a first locking piece 26 having an L-shaped cross section is incorporated in a guide groove 25 formed between the case opening 7 of the main body case 1 and the charging plug receiving port 24 so as to be vertically movable. One end 26a of the piece 26 projects into the charging plug receiving port 24, and the other end 26b projects into the case opening 7 only when the first lock piece 26 is raised as shown in FIG. It shall engage with the notch 27 on the 17 side.

In addition to the locking means, there is provided a charging preventing means for preventing the plug 23 from being inserted into the charging plug receptacle 24 when the battery cover 17 is opened. This charge blocking means is provided with a spring 30 which slidably moves a second lock piece 29 having an L-shaped cross section in a guide groove 28 formed between the case opening 7 of the main body case 1 and the charging plug receiving port 24 so as to be horizontally slidable. At the same time, the top end 29a of the second lock piece 29 opens and closes the upper end opening facing the case opening 7 of the guide groove 25 by sliding in the vertical direction.

Thus, as shown in FIG.
When the power cord side plug 23 is not inserted into 24,
That is, when the battery is not charged, the first lock piece 26 is descending in the guide groove 25 by its own weight or the downward biasing force of the spring, and the second lock piece 29 is opposed to the spring 30 by the battery lid 17. It is pushed. Therefore, at this time, the battery cover 17 can be taken out of the case opening 7.

However, when the plug 23 on the power cord side is inserted into the charging plug receptacle 24 as shown in FIG. 8 (b), the first lock piece 26 is raised by the plug 23, and one end 26b is connected to the battery cover 17
The battery cover 17 cannot be removed.

When taking out the rechargeable battery 8, the battery cover 17 is removed under the state shown in FIG. 8 (a), and as shown in FIG.
A state is obtained in which the first lock piece 26 is restricted from rising by closing 25. Therefore, in this case, the plug 23 on the power cord side
1st lock piece
One end 26a of 26 gets in the way and disables its insertion,
In other words, since charging is disabled, an erroneous operation of charging when the rechargeable battery 8 is taken out can be prevented, which is safe.

Sixth Embodiment FIGS. 9A, 9B and 9C show a sixth embodiment of the present invention. This embodiment shows a modification of the fifth embodiment, and a battery cover constituting a part of the case of the main body case 1.
The point that the first lock piece 26 is incorporated between the 17 and the charging plug receptacle 24 is the same as that of the fifth embodiment, but the specific mechanism of the charge blocking means by the second lock piece 29 is different. That is, the second lock piece 29 of this embodiment is formed in a U-shaped cross section, and is slidable horizontally in the case opening 7 of the main body case 1 and the guide groove 28 formed on the charging plug receiving port 24 side. The lock piece 29 is assembled via a spring 30, and one end 29a and the other end 29b of the lock piece 29 are allowed to slide back and forth with respect to the case opening 7 and the charging plug receiving port 24, respectively. Thus, when the plug 23 on the power cord side is not inserted into the charging plug receptacle 24 as shown in FIG.
The lock piece 26 is descending in the guide groove 25, and the second lock piece 29 is pushed in by the battery lid 17 against the spring 30. Therefore, at this time, the battery cover 17 can be taken out of the case opening 7.

However, when the plug 23 on the power cord side is inserted into the charging plug receptacle 24 as shown in FIG. 9 (b), the plug 23 raises the first lock piece 26 so that one end 26b is connected to the battery cover 17
The battery cover 17 cannot be removed.

When taking out the rechargeable battery 8, the battery cover 17 is removed under the state shown in FIG. 9 (a), and as shown in FIG.
29b closes the charging plug socket 24. Therefore, at this time, the plug 23 on the power cord side cannot be inserted into the charging plug receptacle 24, and charging is disabled.

Seventh Embodiment FIG. 10 shows a seventh embodiment of the present invention. In this embodiment, the case opening 7 is provided on one side surface of the main body case 1 and the charging plug receiving port 24 is provided on the bottom side surface, and the battery cover 17 constituting a part of the case of the main body case 1 has the case opening portion 7 closed. The case opening 7 is opened by sliding the outer surface of the main body case 1 in the orthogonal direction in the direction of arrow B in the figure from the state, and the charging plug receiving port 24 is closed by the lid 17 at the same time. Once the battery cover 17 is moved in the direction B as described above, it cannot be returned in the opposite direction. Therefore, the rechargeable battery 8 can be taken out by moving the battery cover 17 to the charging plug receiving port 24 side and opening the case opening 7 and closing the charging plug receiving port 24. There is no such thing as doing.

Of course, in this case, the plug blade outlet 6 shown in the first embodiment may be closed instead of the charging plug receiving port 24.

[Other Examples]

In each of the above-described embodiments, the means for removing the rechargeable battery 8 from the wiring board 4 may be, for example, a lead wire or a lead connecting the terminal of the rechargeable battery 8 and the pattern on the wiring board 4 in addition to the above-described embodiment. The pieces may be weakly structured at perforations or the like, and the weak structure portion of the lead wire or lead piece may be torn off by pulling the rechargeable battery 8 from the wiring board 4.

Further, the present invention can be similarly applied to a case where not only one rechargeable battery 8 but also two or more rechargeable batteries 8 are mounted on the wiring board 4.

Furthermore, the rechargeable battery 8 is not limited to the one directly mounted on the wiring board 4, but may be similarly applied to a normal storage type such as one that is sandwiched by holding ribs protruding from the inner wall of the main body case 1.

〔The invention's effect〕

The rechargeable small electric device of the present invention can easily take out the rechargeable battery from the main body case by removing a part of the case from the main body case when taking out the rechargeable battery at the time of disposal. Since the case is not allowed to be detached during the charging state, it is possible to prevent the occurrence of an accident of accidentally removing the rechargeable battery while being connected to the external power supply and causing an electric shock, which is safe.

[Brief description of the drawings]

1 to 3 show a first embodiment of a small-sized rechargeable electric device according to the present invention, and FIG. 1 is a side view showing a state in which an electric shaver is inserted into an outlet for charging.
FIG. 2 is a perspective view showing the electric shaver with a battery cover removed, and FIG. 3 is an electric circuit. 4 and 5 show a second embodiment of the present invention. FIG. 4 is a front view of an electric shaver, and FIG. 5 is a perspective view showing a state in which a battery lid is removed. FIG. 6 is a perspective view showing a part of an electric shaver according to a third embodiment of the present invention with a battery cover removed. FIG. 7 is a perspective view showing a fourth embodiment of the present invention, in which a part of an electric shaver is removed from a battery cover. FIGS. 8 (a), (b) and (c) show a fifth embodiment of the present invention. FIG. 8 (a) is a front view showing a part of the electric shaver in a non-charged state. FIG. 8B is a front view showing a charged state, and FIG. 8C is a front view showing the battery cover removed. 9 (a), 9 (b) and 9 (c) show a sixth embodiment of the present invention. FIG. 9 (a) is a front view showing a part of the electric shaver in a non-charged state. Fig. 9 (b) is a front view showing a charged state, and Fig. 9 (c) is a front view showing the battery cover removed. FIG. 10 is a front view of a part of an electric shaver showing a seventh embodiment of the present invention. DESCRIPTION OF SYMBOLS 1 ... Body case, 3 ... Charging plug, 4 ... Wiring board, 6 ... Plug blade outlet / exit, 7 ... Case opening, 8 ... Rechargeable battery, 17 ... Battery cover (part of case) ), 23 ... Power cord plug, 24 ... Charge plug socket.

Claims (1)

(57) [Claims] 1. A part of a case, which is a part of the case, is detachably attached to a main body case accommodating a rechargeable battery so that the rechargeable battery can be taken out. A rechargeable small-sized electric device, characterized in that a rechargeable small electric device is provided.