JPH0850889A - Rechargeable small type electric appliance - Google Patents

Abstract

PURPOSE:To easily and safely take out a rechargeable battery for disposing of. CONSTITUTION:A case opening part 5 is formed in a part of a main body case 1 in which a motor M is housed, and a rechargeable battery 7 is housed inside the case opening 5. The case opening 5 is closed with a cover 10 capable of attaching and detaching, and a switch 11 which is part of a connecting path of power to the motor M from the rechargeable battery 7 is formed on the cover 10 side.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a small electric device having a built-in rechargeable battery, and takes measures to recover the rechargeable battery.

[0002]

2. Description of the Related Art In recent years, rechargeable batteries such as Ni-Cd batteries have become mainstream in rechargeable electric razors and various other small electric devices because they can be repeatedly used as a power source compared to dry batteries. Since it uses harmful substances such as cadmium, it is not preferable to dispose of the whole equipment anywhere to prevent pollution. Therefore, at the time of disposal, it is necessary to remove the rechargeable battery from the device and collect it.

[0003]

However, unlike the dry battery, the rechargeable battery cannot be easily taken out from the device. If the contact terminal plate such as a coil spring or leaf spring is used as the rechargeable battery is stored in the device,
The contact resistance increases with the lapse of time and the characteristic of the rechargeable battery that a large current can be taken out cannot be exhibited. Therefore, the rechargeable battery must be firmly connected and fixed to the circuit in the device by soldering or the like. When the rechargeable battery is attached, the rechargeable battery cannot be taken out of the device unless the soldered portion is removed or the lead wire is cut with a blade or the like.

Further, since it is difficult to know from which portion of the device the rechargeable battery is housed in the outside of the device, the device must be broken when it is taken out, but such breaking is not an easy task. In particular, when the rechargeable battery is taken out by an actual general user, not by a service person of the equipment, it is difficult to carry out because it does not have a special removing jig.

The present invention solves the above-mentioned conventional problems,
The purpose of the present invention is to facilitate the taking out of the rechargeable battery and thus contribute to the facilitation of the recovery work. Another object of the present invention is to enhance the safety during rechargeable battery removal work.

[0006]

In the rechargeable small-sized electric device of the present invention, a case opening is provided in a part of a main body case accommodating a load, and a rechargeable battery is stored in the case opening.
The case opening is closed by a removable lid member, and a part of a connection path for electric power from the rechargeable battery to the load is provided on the lid member side.

[0007]

When the rechargeable battery is taken out from the main body case for disposal, it can be easily taken out by removing the lid member. At that time, since the connection of the electric power from the rechargeable battery to the load is cut off by removing the lid material, the device suddenly operates during the work of taking out the rechargeable battery and panics the operator,
It is possible to prevent accidents such as generating sparks at the moment of disconnecting the rechargeable battery terminal.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a rechargeable electric shaver will be described with reference to the drawings. In FIGS. 1 and 2, a rectangular tubular body case 1 for an electric razor is provided with a razor blade unit 2 at its upper portion and a charging plug 3 at its bottom portion which can be operated to move in and out. Inside the body case 1, a razor blade driving motor M (see FIG. 2), which is a load, and a wiring board 4 are housed and arranged. A case opening portion 5 is opened in the main body case 1 over two surfaces of one side surface of the case 1 and a front surface or a rear surface intersecting with the one side surface. The opening 5 is detachably covered with a lid material 10 having an L-shaped cross section which constitutes a part of the main body case 1.

On the wiring board 4, a pattern corresponding to the circuit shown in FIG. 2 is formed, and a rechargeable battery 7 such as a Ni-Cd battery and a transformer 8 are mounted. As shown in FIG. 1, the rechargeable battery 7 has the negative and positive terminals 12, 13 connected and fixed to the lead pieces 14, 15 on the substrate 4 by soldering or the like. At least the rechargeable battery 7 on the wiring board 4 is housed and arranged so as to face the case opening 5. The rechargeable battery 7 is detachably attached to the wiring board 4. For example, at least the peripheral portion 4a of the terminal connecting portion of the wiring board 4 connected to the terminal of the rechargeable battery 7 is folded along the fold line 16 formed by a large number of small holes or grooves.

A switch 11 forming a part of a connection path of electric power from the rechargeable battery 7 to the motor M serving as the load is provided on the lid member 10. A push operation type switch operation button 6 is adopted as the switch 11, and the lid member 10 is composed of a switch holding plate 26 that holds the button 6 together with the switch 11. Between the lid member 10 and the main body case 1, the lid member 10 is provided with an elastically deformable retaining claw 19 projecting from the case of the switch 11 and projecting into the case opening 5 of the main body case 1. By being engaged with the engaging hole 25 of the piece 24, the case 24 is held in the closed state. When the switch operation button 6 projects from the lid member 10 in the off state, the button member 6 is used as a knob to pull the lid member 10 strongly, so that the retaining claw 19 comes out of the engaging hole 25 and is removed from the case opening 5. be able to. However, in the switch-on state, the switch operation button 6 sinks to the lid member 10 side and the amount of protrusion thereof decreases, so this cannot be used as a knob, and the lid member 10 cannot be removed.

Now, to take out the rechargeable battery 7 from this device, under the OFF state in which the switch operation button 6 projects from the lid member 10, the button member 6 is grasped and the lid member 10 is pulled to pull the lid member 10. Remove. Wiring board 4
The rechargeable battery 7 can be taken out from the case opening 5 by breaking off along the fold line 16. Then the lid material 1
Since the switch 11 is removed every 0, the rechargeable battery 7
There is no danger of sparks and the work of breaking off can be done safely.

(Other Embodiments) As means for removing the rechargeable battery 7 from the wiring board 4, in addition to the above embodiment, for example, a lead wire for connecting the terminal of the rechargeable battery 7 and the pattern of the wiring board 4 or The lead piece or the like may be weakly structured by perforations and the like, and the rechargeable battery 7 may be torn off by pulling the rechargeable battery 7 from the wiring board 4. Further, the present invention can be similarly applied not only when one rechargeable battery 7 is mounted on the wiring board 4 but also when two or more rechargeable batteries 7 are mounted. Furthermore, the rechargeable battery 7 is not limited to being directly mounted on the wiring board 4, but can be similarly applied to a normal accommodating form such as being sandwiched by holding ribs protruding from the inner wall of the main body case 1.

[0013]

According to the rechargeable small electric device of the present invention,
Since the rechargeable battery can be taken out by removing the lid member, the rechargeable battery can be easily taken out from the main body case without doing unreasonable things such as unnecessarily breaking the main body case. In addition, when removing the rechargeable battery, the lid material has already been removed, and this removal disconnects the electric power from the rechargeable battery to the load. It is safe because it can prevent panicking and sparks at the moment of disconnecting the rechargeable battery terminals.

[Brief description of drawings]

FIG. 1 is a perspective view showing a part of a rechargeable small electric device with a lid removed.

FIG. 2 is an electric circuit diagram of a rechargeable small electric device.

[Explanation of symbols]

 1 Body Case 5 Case Opening 7 Rechargeable Battery 10 Lid M Motor (Load)

Claims (1)

[Claims] 1. A case opening 5 is provided in a part of a main body case 1 for accommodating a load, and a rechargeable battery 7 is provided in the case opening 5.
The case opening 5 is closed by a removable lid member 10, and a part of a connection path of electric power from the rechargeable battery 7 to the load is provided on the lid member 10 side. A rechargeable small electric device characterized in that