JP2729779B2 - Small electrical equipment - Google Patents

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 battery and takes measures to recover the battery.

[0002]

2. Description of the Related Art In recent years, unlike a dry cell, a Ni-Cd cell or the like which can be used repeatedly is used as a power source for a small electric device such as a rechargeable electric shaver. Since the substance is used, it is not preferable to discard the equipment everywhere in terms of pollution prevention. Therefore, when disposing of the battery, it is necessary to collect the battery from the device.

[0003]

However, for a battery which is securely connected and fixed to a circuit in a device by soldering or the like, it is necessary to remove the soldered portion or cut the lead piece with a blade or the like. . In particular, when the battery is taken out by an actual general user, not by a service person of the device, the battery is not difficult because it has no special removal jig.

SUMMARY OF THE INVENTION An object of the present invention is to solve such a problem, and to provide a small-sized electric device capable of facilitating a collection operation of a battery mounted in an electrically connected state on a wiring board. To offer.

[0005]

According to the present invention, there is provided a small electric device in which a battery is mounted on a wiring board in an electrically connected state.
It is arranged to swing the seesaw around the base 7 as a fulcrum
In, that said between Yin terminal 8.9 of the battery 5 and the wiring board 4, it is connected with a conductive body provided with a weakened portion 12 to be separated by the tensile load due to the seesaw rocking of the battery 5 It is characterized by.

In the present invention, the battery 5 is mounted on the wiring board 4 in a state where the negative anode terminals 8 and 9 thereof and the circuit pattern on the wiring board 4 are electrically connected by the lead members 10 and 11. In a small electric device, the battery 5 is located on the wiring board 4.
So that the seesaw swings around the support table 7
As well as distribution, a portion of the lead member 10, 11, before
It is characterized in that the weak portion 12 which is easily cut by a tensile load due to the seesaw swing of the battery 5 is provided. The weakened portion 12 is provided such that the cut end remaining on the battery 5 side by cutting the weakened portion 12 is in a region inside the outer periphery of the end face of the battery 5 having the negative anode terminals 8 and 9.

[0007]

When the battery 5 is collected from the device, the wiring board 4
Press the end of the battery 5 with your fingertip to swing the seesaw
Thus, the weak portion 12 of the conductor can be cut, and the battery 5 and the wiring board 4 can be easily separated. At this time, if a weak part 12 is provided in a part of the lead materials 10 and 11 connecting the negative anode terminals 8 and 9 of the battery 5 and the circuit pattern on the wiring board 4, the weak part 12 is connected to the battery 5. No
The battery 5 can be easily separated from the wiring board 4 by cutting with a tensile load caused by the swing of the saw . Further, although the cuts leave pieces of the lead materials 10 and 11 on the battery 5 side, the pieces are located in a region inside the outer periphery of the end surface of the battery 5. Therefore, a problem that occurs when such a piece protrudes from the outer periphery of the end face of the battery 5 to the outside, that is, when a large amount of the battery 5 is stored in a collection case or the like, the battery protrudes from the outer circumference of the end face of the battery 5. There is a gap between 5.5
There is no problem such as a short circuit between the batteries 5 and the occurrence of a heat generation accident at the cut end, and the storage case can be stored compactly and safely without a heat generation accident due to the short circuit.

[0008]

【Example】

(First Embodiment) FIGS. 1 to 6 show an embodiment in which the present invention is applied to a rechargeable electric shaver. In FIG. 2, a rectangular main body case 1 of an electric razor is formed by integrally connecting front and rear half cases 1a and 1b with screws or the like, and a razor blade unit 2 is provided at an upper portion thereof and a bottom portion thereof is provided. The charging plug 3 is provided with a retractable operation. A razor blade driving motor (not shown), a wiring board 4 and the like are housed and arranged inside the main body case 1.
A battery 5 such as a Ni-Cd battery, and a transformer 6 and the like are mounted on the wiring board 4. A battery outlet 13 is opened in a part of the main body case 1 on both front and side surfaces of the main body case 1, and an opening / closing lid 14 having an L-shaped cross section is detachably attached to the outlet 13. As shown in FIG. 4, the battery 5 on the wiring board 4 is
It is arranged to face.

Near the one end of the wiring board 4, the battery 5 is mounted on a support table 7 whose longitudinal center is fitted and fixed in a hole of the board 4, and both ends thereof are floated from the wiring board 4. The battery 5 has the negative and positive terminals 8 and 9 connected to the wiring board 4.
Connected and fixed to the upper lead materials 10 and 11 by soldering, etc.
Normally, it is held in a horizontal posture on the support table 7. Battery holding projections 15 are provided on the inner surface of the opening / closing lid 14, and when the opening / closing lid 14 is closed, the projections 15
By pressing portions located on both sides of the support 7 on the peripheral surface of the battery 5, the battery 5 is prevented from wobbling easily in the main body case 1.

In FIG. 4, the lead members 10 and 11 are formed in a dangerous cross section by providing a weakened portion 12 due to constriction in the middle. As shown in FIG. 1, the weak portion 12 is opened by opening and closing the cover 14, and the battery 5 is rocked back and forth by the finger pressure on the support base 7 as a fulcrum so that the battery 5 is broken by stress concentration when a tensile load is applied. You have set. This lead material 10
1 and 4, the pieces left on the side of the battery 5 due to the tearing-off of the battery 11 from the outer periphery of the one end face serving as the cathode terminal 8 of the battery 5 and the other end face having the anode terminal 9 to the outside. It does not protrude and fits in the area inside the outer periphery. Lead material 10.1
As 1, a thin plate, a foil, or a thin wire such as a copper wire is used, but a copper foil (thickness: 35 μm) is particularly preferable because it is easily cut along with the seesaw swing of the battery 5.

As a means for forming the weakly cut portion 12 which can be easily cut in a part of the lead materials 10 and 11, instead of the above-described constriction, a hole is formed in the middle of the lead materials 10 and 11 as shown in FIG. A perforation may be formed, or a groove for reducing the plate thickness may be formed as shown in FIG.

(Second Embodiment) FIGS. 7 and 8 show a second embodiment of the present invention. In this embodiment, the wiring board 4
Is similar to that of the first embodiment in that the center of the battery 5 is mounted on the support base 7 and both ends thereof are swingable back and forth alternately in the same manner as in the first embodiment. Lead material 1 of pattern 18 on wiring board 4
The difference is that the connecting portion 18a with the line 0.11 is torn off. In the connecting portion 18a of the pattern 18, that is, the weakened portion 12, small holes 19 are annularly arranged around the entire circumference of the connecting portion 18a so that this cutting can be surely performed. In addition, as shown in FIG. 7, the number of the support bases 7 may be two or more.

(Third Embodiment) FIG. 9 shows a third embodiment of the present invention. In this embodiment, the center of the battery 5 on the wiring board 4 is mounted on the support base 7 and both ends thereof are mounted so that the seesaw can be swung alternately by a finger load.
This is also the same as the first embodiment, except that the connection portion 4a of the wiring board 4 with the lead members 10 and 11 is torn off as the seesaw swings. The connecting portion 4a of the substrate 4, that is, the weakened portion 12, is provided with a notch 20 all around the connecting portion 4a so that the cutting can be performed reliably and easily. The support 7 may be welded to the substrate 4 or may be formed by outsert molding.

(Fourth Embodiment) FIGS. 10 to 12 show a fourth embodiment of the present invention. In this embodiment, the support 7 is formed in a ring shape, and two of them are passed through the battery 5 and mounted on the wiring board 4. The connection of the negative anode terminals 8 and 9 at both ends of the battery 5 to the lead members 10 and 11 having the weak portion 12 on the wiring board 4 by soldering or the like is the same as that of the above-described embodiment. Normally, as shown in FIG. 11, the support bases 7, 7 are arranged on the battery 5 with a large interval therebetween, and the support bases are provided with support base detents 21 provided on the inner surface of the open / close lid 14. Stop movement of 7.7. Therefore, the support 7 in this case also has a function of preventing the battery 5 from rattling in the main body case 1. When the battery 5 is removed, the opening / closing lid 14 is removed as shown in FIG. 12, and the support base 7.7 is used as a fulcrum for bringing both ends of the battery 5 toward the center and swinging the seesaw.

(Fifth Embodiment) FIGS. 13 and 14 show a fifth embodiment of the present invention. In this embodiment, the openings 2 are provided at locations corresponding to both sides of the support 7 on the wiring board 4.
2 and 22 are formed, and both ends of the battery 5 are oscillated by the seesaw in the opening 22 with the support 7 as a fulcrum. The spot welding portion between the negative and positive electrode terminals 8 and 9 of the battery 5 and the lead members 10 and 11, that is, the weak portion 12 can be peeled off with the swing of the seesaw. According to this, since the height of the support base 7 can be made as low as possible by opening the opening 22, the thickness of the main body case 1 can be reduced. In this case, if a rectangular thin battery is used as the battery 5, the main body case 1 can be further thinned.

(Sixth Embodiment) FIGS. 15 and 16 show a sixth embodiment of the present invention. In this embodiment, the wiring board 4
An opening 23 is provided at a position directly below the battery 5, while the support 7 supporting the center of the battery 5 is provided so as to protrude into the opening 23 from the inner wall of the main body case 1. In addition, on the peripheral surface of the battery 5, the battery holding protrusion 24 provided on the inner surface of the opening / closing lid 14 is used to stop the play. Thus, as shown in FIG. 16, when the battery 5 is rocked on the seesaw with the support 7 as a fulcrum, the spot welding portion between the negative anode terminals 8.9 of the battery 5 and the lead materials 10 and 11, that is, the weak portion 12 is formed. The point of peeling is the same as in the case of the fifth embodiment.

(Other Embodiments) When the 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 battery 5 is separated from the wiring board 4 as in each of the above embodiments. It can also be removed. In this case, it is not particularly necessary to provide the battery case 13 and the opening / closing lid 14 in the main body case 1. In addition, it goes without saying that the present invention can be similarly applied to not only one battery 5 mounted on the wiring substrate 4 but also two or more batteries.

[0018]

According to the present invention, in recovering the battery 5,
When the battery 5 is separated from the wiring board 4,
Simply press the end of the battery 5 on the plate 4 with a fingertip to
With a simple operation of swinging the seesaw around the fulcrum, the blade
The conductor is removed from the weakened part 13 without using a tool such as an object.
The battery 5 can be easily cut, and the operation of collecting the battery 5 from the device can be easily performed. Some of the lead members 10 and 11 connecting the negative anode terminals 8 and 9 of the battery 5 and the circuit patterns on the wiring board 4 include :
An easy-to-cut weak portion 12 is provided, which can be easily cut by a tensile load caused by swinging of the seesaw of the battery 5, and a piece remaining on the side of the battery 5 due to the cutting of the weak portion 12 is an outer periphery of an end face having negative anode terminals 8 and 9. It fits in the inner area. Therefore, when the battery 5 is stored in a collection case or the like, the battery 5 can be compactly stored without creating a gap between the batteries 5 and 5 due to the remaining pieces on the battery 5 side. Can prevent the occurrence of short-circuit heat generation between the batteries 5 and 5 and can be stored safely.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a cut state of a terminal connection portion of a battery in an electric shaver according to a first embodiment.

FIG. 2 is a perspective view showing the electric shaver of the first embodiment with its opening / closing lid removed.

FIG. 3 is a vertical sectional front view of a main part of the electric shaver of the first embodiment.

FIG. 4 is a partially cutaway bottom view of the electric shaver of the first embodiment.

FIG. 5 is a perspective view showing a modified embodiment of the lead material of the battery of the first embodiment.

FIG. 6 is a perspective view showing still another modification of the lead material of the battery according to the first embodiment.

FIG. 7 is a longitudinal sectional side view of a main part of an electric shaver according to a second embodiment.

FIG. 8 is a plan view of a part of a wiring board according to a second embodiment.

FIG. 9 is a vertical sectional side view of a wiring board according to a third embodiment.

FIG. 10 is a perspective view of a main part of an electric shaver according to a fourth embodiment.

FIG. 11 is a longitudinal sectional side view of a main part of an electric shaver according to a fourth embodiment.

FIG. 12 is a perspective view showing a procedure for cutting a terminal connection portion of the battery according to the fourth embodiment.

FIG. 13 is a perspective view of a main part of an electric shaver according to a fifth embodiment.

FIG. 14 is a sectional view showing a state in which the battery of the fifth embodiment is removed.

FIG. 15 is a longitudinal sectional side view of a main part of an electric shaver according to a sixth embodiment.

FIG. 16 is a longitudinal sectional side view showing a state where a battery of the sixth embodiment is removed.

[Explanation of symbols]

 4 Wiring board 5 Battery 10 ・ 11 Lead material 12 Weak part

Claims (3)

(57) [Claims] 1. In a small electric device in which a battery 5 is mounted on a wiring board 4 in an electrically connected state, the battery 5 is supported by a support 7 disposed on the wiring board 4 as a fulcrum.
And the battery 5
Of the battery 5 between the negative anode terminals 8 and 9 of the
A small electric device characterized by being connected by a conductor provided with a weak portion 12 capable of being separated by a tensile load caused by swinging of a seesaw . 2. A battery 5 on a wiring board 4 includes a negative electrode terminal 8.9 and a circuit pattern on the wiring board 4 connected to a lead material 1.
In a small electric device mounted so as to be electrically connected at 0.11, the battery 5 is supported by a support 7 disposed on the wiring board 4 as a fulcrum.
And a part of the lead materials 10 and 11 is attached to the seesaw swing of the battery 5.
A small electric device comprising a weak portion 12 which is easily cut by a tensile load . 3. The weakened portion 12 is provided such that a cut end remaining on the battery 5 side by cutting the weakened portion 12 is in a region inside an outer periphery of an end surface of the battery 5 having the negative anode terminals 8 and 9. The described small electrical equipment.