JPH05225963A - Charging type small electrical equipment - Google Patents

Abstract

PURPOSE:To simplify a procedure for removing a charging battery and make easy a collection work for the battery by enabling the battery to be demounted from a printed circuit board by directly folding and taking it out. CONSTITUTION:A razor blade drive motor, a printed circuit board 4 or the like is housed and arranged in the square cylindrical body case 1 of an electric razor. A folding and takeout line 13 is formed on the board 4 at a position surrounding a charging battery 5, or in a regional section 4a including a position corresponding to a section immediately below the battery 5 and a position around the connecting section of a terminal 8 with a lead piece 10. The battery 5 can, therefore, be completely removed from the board 4, together with a connecting section with the piece 10 by folding and taking out the section 4a of the board 4 along a line 13. Also, a holding section 14 is so formed at the section 4a as to be projected beyond the end of the board 4, thereby allowing the section 4a to be easily caught and ensuring the easy folding and takeout of the board 4. According to this construction, the removal of the battery 5 can be simplified, and a work for collecting the battery 5 can be made easy.

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 has taken measures to recover the rechargeable battery.

[0002]

2. Description of the Related Art In recent years, rechargeable batteries have become the mainstream as a power source for small electric devices such as rechargeable electric razors because they allow repeated use unlike dry batteries.
-Because rechargeable batteries such as Cd batteries use harmful substances such as cadmium, it is not preferable to dispose of the equipment together with equipment anywhere to prevent pollution. Therefore, it is necessary to recover the rechargeable battery from the device when disposing of it.

[0003]

However, unlike the dry battery, the rechargeable battery cannot be easily taken out from the device. That is, as a storage form of the rechargeable battery in the device, it is conceivable to use a contact terminal plate such as a coil spring or a leaf spring similarly to the dry battery, but in that case, the contact resistance with the contact terminal plate increases with time, The characteristic of the rechargeable battery that can take out a large current cannot be exhibited. Therefore, the rechargeable battery must be securely connected and fixed to the circuit in the device by soldering or the like. In such a mounted state of the rechargeable battery, the rechargeable battery cannot be taken out from the device unless the soldered portion is removed or the lead piece is cut with a blade or the like. In particular, when such a 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. Therefore, the present invention improves the structure of the wiring board to which the rechargeable battery is connected and fixed by soldering or the like in an electric device, thereby simplifying the removal of the rechargeable battery,
The purpose is to contribute to facilitating the recovery work.

[0004]

In order to achieve the above object, in the rechargeable small-sized electric equipment of the present invention, the rechargeable battery can be detached from the substrate by directly breaking off the wiring substrate. Therefore, at least the peripheral portion of the connection portion of the wiring board to the terminal of the rechargeable battery is provided so as to be foldable.

[0005]

When the rechargeable battery is taken out of the device, the rechargeable battery can be removed from the wiring board by manually breaking off at least the peripheral portion of the connection portion with the terminal of the rechargeable battery.

[0006]

【Example】

(Embodiment 1) FIGS. 1 to 4 show an embodiment in which the present invention is applied to a rechargeable electric shaver. In FIG. 2, this electric razor has a rectangular tube-shaped main body case 1 in which front and rear cases 1a and 1b of a half-division type are integrally coupled with each other by screws or the like, and a razor blade unit 2 is charged at the upper portion thereof and a bottom portion thereof is charged. Power supply pins 3 for each are provided. A motor (not shown) for driving a razor blade, a wiring board 4 and the like are housed and arranged inside the main body case 1. The wiring board 4
A rechargeable battery 5 such as a Ni-Cd battery is installed in the device, and a transformer 6 and the like are also installed in the device. A rechargeable battery outlet 11 is opened in a part of the main body case 1 over the front, side and rear surfaces of the case 1, and an opening / closing lid 12 having a U-shaped cross section is detachably attached to the outlet 11. .. The rechargeable battery 5 on the wiring board 4 is arranged so as to face the rechargeable battery outlet 11. The positive and negative electrode terminals 7 and 8 of the rechargeable battery 5 are connected and fixed to the lead pieces 9 and 10 on the wiring board 4 by soldering or the like.

An area including a position surrounding the rechargeable battery 5 on the wiring board 4, that is, a part corresponding to a position directly below the rechargeable battery 5 and a part around a connecting portion of the terminals 7 and 8 with the lead pieces 9 and 10. The break line 13 is inserted in the portion 4a. Thus, the region 4a of the wiring board 4 is broken along the broken line 13 so that the rechargeable battery 5 can be completely removed from the wiring board 4 together with the connecting portions to the lead pieces 9 and 10. In addition, the foldable region portion 4a of the wiring board 4
By providing the grip portion 14 so as to project from the side edge E of the substrate 4, the area portion 4a is easily gripped and the breaking operation thereof is facilitated.

The break line 13 is shown in FIGS.
As shown in FIG. 4, a groove 15 having a V-shaped cross section is put in the substrate 4 to reduce the plate thickness, or as shown in FIG. 4, a small elongated hole-shaped or round hole-shaped hole 16 penetrating in the plate thickness direction is formed. Set up side by side. In this case, as shown in FIG.
Of the base plate 4 and the notches 17 and 17 are formed in the base part of the base plate 4, and the small holes 1 are formed in the connecting portions of the grooves 15 and the grooves 15 which are orthogonal to each other.
If 8 is provided, it becomes easier to fold along the fold line 13 starting from the notches 17 and 17 by holding the knob 14 by hand and bending it in the direction of arrow A in FIG.

(Second Embodiment) FIGS. 5 and 6 show a second embodiment of the present invention. In this embodiment, the wire breaker 13 and the grip portion 14 are provided only on the peripheral portions 4b and 4b of the connection portion of the rechargeable battery 5 with the positive and negative electrode terminals 7 and 8 in the wiring board 4 to connect with the cathode terminal 7. 4b around the part
And the peripheral portion 4b of the connection portion with the anode terminal 8 can be individually folded. In the case of such a configuration, not only the rechargeable battery 5 can be removed by manually breaking off the wiring substrate 4 as in the above-described embodiment, but also between the above-mentioned locations 4b and 4b on the substrate 4 as shown in FIG. Since the pattern P can be formed also on the back surface side of the portion corresponding to directly below the rechargeable battery 5, the pattern at this place can be effectively used, and the pattern P becomes an obstacle when the rechargeable battery 5 is removed. Not even.

(Third Embodiment) FIGS. 7 and 8 show a third embodiment of the present invention. In this embodiment, the peripheral portion 4 of the connection portion of the rechargeable battery 5 of the wiring board 4 with the positive and negative electrode terminals 7 and 8
A break line 13 is provided on each of b and 4b, and a notch 18 is provided directly below the rechargeable battery 5 between the locations 4b and 4b. In this case, since the notch 18 can be used as a finger-insertion space, the rechargeable battery 5 can be directly grasped by a finger even in a narrow space in the main body case 1 to connect with the bipolar terminals 7 and 8 of the substrate 4. 4b around the part
4b can be easily broken off.

(Fourth Embodiment) FIGS. 9 and 10 show a fourth embodiment of the present invention. In this embodiment, the mounting form of the rechargeable battery 5 on the wiring board 4 is different from the above-described embodiments, a notch 19 is provided at one side edge E of the substrate 4, and the rechargeable battery 5 is provided in the notch 19. The upper and lower parts of the peripheral surface are housed so as to project to both the front and back sides of the substrate 4, and the break lines 13 are provided at the peripheral portions 4b and 4b of the connecting portions of the bipolar terminals 7 and 8 with the lead pieces 9 and 10, respectively. It was put in. In the case of such a configuration, as in the case of the third embodiment, the rechargeable battery 5 is grasped with fingers and the bipolar terminals 7 and 8 of the substrate 4 are held.
Peripheral portions 4b and 4b of the connection portion with and can be broken along the break line 13.

(Other Embodiments) When the rechargeable battery 5 is taken out of the device, the front case 1a and the rear case 1b of the main body case 1 are separated from each other, so that the rechargeable battery 5 can be mounted on the wiring board as in the above embodiments. It can also be folded off from 4.
In this case, it is not necessary to provide the rechargeable battery outlet 11 and the opening / closing lid 12 on the main body case 1. Needless to say, the present invention can be applied not only to one rechargeable battery 5 mounted on the wiring board 4 but also to two or more rechargeable batteries 5.

[0013]

EFFECT OF THE INVENTION Since the rechargeable small-sized electric device of the present invention is constructed such that at least the peripheral portion 4b of the connection portion of the wiring board 4 with the terminal of the rechargeable battery 5 can be broken, a special jig is used. The portion 4b of the substrate 4 can be directly broken off without using it, and the work of collecting the rechargeable battery 5 from the device can be easily performed.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a main part of an electric shaver.

FIG. 2 is a perspective view showing the electric razor with its opening / closing lid removed.

FIG. 3 is a plan view of a part of the wiring board.

FIG. 4 is a plan view of a modified example shown corresponding to FIG.

FIG. 5 is a perspective view of a part of a wiring board showing another embodiment.

FIG. 6 is a rear view of a part of a wiring board showing another embodiment.

FIG. 7 is a perspective view of a part of a wiring board showing another embodiment.

8 is a cross-sectional view of a part of the wiring board shown in FIG.

FIG. 9 is a perspective view of a part of a wiring board according to another embodiment.

10 is a cross-sectional view of a part of the wiring board shown in FIG.

[Explanation of symbols]

 1 Body case 4 Wiring board 5 Rechargeable battery 13 Break wire

Claims (1)

[Claims] 1. A wiring board 4 on which a rechargeable battery 5 is mounted is provided, and at least a peripheral portion 4b of a connection portion of the wiring board 4 to a terminal of the rechargeable battery 5 is provided in a foldable manner. Rechargeable small electric equipment characterized by.