JPS59164081A - Electric razor - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] This invention is a small part of the first battery that can be used under normal conditions.

The present invention relates to an improvement in an electric shaver incorporating a second battery as a backup power source.

Conventionally, some electric shavers of this type include a built-in first battery and a second battery, each of which drives a motor, and a switch that selectively switches between the first battery and the second battery. According to this.

When a rechargeable battery is used as the first battery for use in a critical situation, if the capacity of that battery decreases due to use, a spare second battery can be used by operating the changeover switch. It is convenient that the razor can be used immediately even after the capacity of the first battery decreases without waiting for the time required to charge the battery.

However, the changeover switch normally adopts a configuration in which one common operation knob can be switched between two positions, the first battery drive position and the second battery drive position, but when operating it, sometimes the first battery drive position If you accidentally move the battery to the second battery drive position when it should have stopped and use it without noticing, you may accidentally reduce the capacity of the second battery. This sometimes caused the inconvenience of not being able to use it.

In addition, if a single switching operation knob is used to drive both the first and second batteries, the frequency of use of that common operation knob will increase, and the operation knob will be more likely to be damaged or malfunction at an early stage. This may lead to the worst situation in which both the first battery and the second battery become unusable.

Focusing on this fact, this invention has developed the first
Assuming that a battery and a spare second battery are built-in, a dedicated first battery is used to turn on and off the power to the load of each battery.
By making it possible to operate the switch and the second switch independently, and by making the operation of each switch different in difficulty, the second battery replaces the load that should be driven by the first battery as in the conventional case. To provide an electric shaver that can effectively prevent erroneous operations such as when the shaver is driven by the electric shaver, and that can minimize damage or malfunction of the operation knob for driving the first battery used during normal operation.

The details will be explained below based on the drawings.

FIG. 1 illustrates a vibrating electric shaver according to a first embodiment of the invention, in which a vibrating inner cutter (not shown) is mounted on the upper part of the main body case 1, and an outer cutter with which the inner cutter slides. Inside the main body case 1, there is a motor 4 that drives the inner blade, and a first motor that is normally used to supply electric power to the motor 4.
It has a built-in battery 5 and a second battery 6 for pre-IJii.

The first battery 5 and the second battery 6 may be either storage batteries or dry batteries, and it does not matter whether they are rechargeable or not. For example, the first battery 5 may be a single-cell type nickel-cadmium storage battery, and the second battery 6 may be a AAA-type dry battery, each having a different battery capacity.

The operation knob 73 of the first switch 7 opens and closes the energizing circuit to the motor 4 of the first battery 5, and the second switch 8 opens and closes the energizing circuit of the second battery 6 to the motor 4. are respectively installed in the main body case 1.

In the illustrated example, the first switch operation knob 7a, which adopts a sliding operation mode, is located on the side surface 1b of the main body case 1 having a rectangular cylindrical shape.
The on/off contact 7b of the first switch 7 is inserted in the energizing circuit of the first battery 5 as shown in FIG. At this point, the energizing circuit of the first battery 5 to the motor 4 is turned off, and at the upper position, the energizing circuit is turned on. On the other hand, the second switch knob 8 is a push-button type in which the opening/closing states of the first contact 3a for lightning opening and the second contact Bb for sealing are reversed in conjunction with the push button operation of the push knob 8C. It is incorporated inside 1 and 2
The pressing knob 8C is made to face the opening 9 which is so small that a fingertip cannot fit into -91 of the rear IC of the main body case 1. Further, the first contact I3a is interposed in the energizing circuit of the second battery 6, and the second contact 8b is connected to the on/off contact 7b of the first switch 7.
are connected in series. Furthermore, ribs 10, 10, 1 surrounding the opening 9 on three sides of the rear IC of the main body case l
0 is formed in a protruding manner, and a mirror 11 as an accessory is inserted between the left and right ribs 10 and 10 so that it can be inserted and removed from below. The mirror 11 is used to take a picture of the area to be shaved.

Under normal conditions, the opening portion 9 is covered by the attachment, and the second switch and the second switch 8 are hidden from the user's eyes. Further, a protruding operating portion 12 that can be inserted into and removed from the opening 9 is formed at a portion of the lower edge of the mirror 11 .

In such a case, if you directly slide the operation knob 7a of the first switch 7 to the upper position with your finger, the on/off contact 7a of the first switch 7 will close as shown in FIG. 9(a), and the motor 4 will
and the first battery 5 are connected, and the motor 4 is driven. next,
The capacity of the first battery 5 decreases with use, but if you continue to use it without noticing this decrease in capacity, the motor 4 will not drive even if you turn on the first switch operation knob 7a. It becomes unusable. Therefore, in this case, either the second battery 6 is used or, in this case, the mirror 11 is removed from the rear IC and the second switch 8 is exposed in the opening 9, and the mirror 11 is removed as shown in FIG. When the operation part 12 is inserted into the opening 9 and the press knob 8C of the second switch 8 is pressed, the second switch 8 is pressed as shown in FIG. 9jb).
The first contact 8a of is closed, the second battery 6 is connected to the motor 4, and the motor 4 is driven by the battery 6. At this time,
Even if the second switch operation knob 8 is turned on while the first switch operation knob is in the on position, the second contact 8b connected in series with the on/off contact 7b of the first switch 7 will
Since the first contact 8a is opened in conjunction with the closing operation of the first contact 8a, the first battery 5 and the second battery 6 are never connected to the motor 4 at the same time. The driving state of the motor 4 is determined by pressing the operation knob 8c of the second switch 8 and switching the switch contacts 8a and 8.
This continues until the switch b is reversed, so the second battery 6 is not used unnecessarily. A cushioning material 16 such as sponge is pasted to the lower edge of the mirror 11 having the operating portion 12 so that it will not be damaged even if it comes into contact with the periphery of the opening 9 of the main case 1.

FIGS. 3 and 4 show a second embodiment of the present invention, and the difference from the first embodiment is that the first switch operation knob 7 is a sliding type as the electric shaver is rotary type.
A and the second switch 8 of the psychological set are arranged one above the other on the same side surface 1b. Furthermore, the second switch 8
'/ri as an accessory that is operated by pressing through the opening 9.
Another difference is that a sweeping brush 13 is employed. The cleaning blade 13 is used to remove hair from the inner and outer cutters 3, and its handle 13a.

As in the case of the mirror j1, a protruding operating portion 12 that can be inserted into and removed from the open portion 9 is integrally formed.

The cleaning brush 13 is removably inserted between ribs 14 formed protrudingly on the rear IC of the main body case 1. 1st
In order to press the second switch 8 in an emergency when the battery capacity of the battery 5 has decreased, the operation section 1 of the mirror 11 of the first embodiment is used.
2, as shown in FIG. 4, the operating portion 12 of the cleaning brush 13 is inserted into the opening 1 9 and the second switch 8 is pressed. In addition, as an alternative to this embodiment, the opening 9 may be formed between the ribs 14 on the rear surface [C] so that the second switch 8 faces the opening 9.

This allows 'X! At 3 o'clock, the second switch 8 is covered and hidden by the handle 3a of the cleaning brush 13.

FIG. 5 shows a vibrating electric shaver showing a third embodiment of the present invention, in which a protruding shape is formed on a part of the opening edge of an outer blade protection camp 15 which is removably attached to the second part of the main body case 1. An operating section 12 is provided. When opening/closing the second switch 8, remove the outer blade protection cap]5 and remove the operating section 12.
is inserted into the opening 9 of the front surface 1a of the main body case 1, and the second switch 8 in the opening 9 is pressed down. The main body case 1 is designed so that the first switch operation knob 7a can be operated directly with a finger as in the first and second embodiments.
It is attached to the upper part of the front surface 1a in an exposed state.

FIGS. 6 and 7 show a fourth embodiment of the present invention, which differs from the first embodiment.

The second point is that a reed switch is used as the second switch 8, and the magnetic operating section 12 for opening and closing the reed switch is provided on the back side of the mirror 1. In the normal state, the mirror 11 has a rib 10 on the rear IC of the main body case 1 with its mirror surface 11a facing inward.
10 is guided and inserted, and the second switch 8 is covered. When turning on the second switch 8, remove the mirror 11 from the main case 1, turn it over, and reinsert it onto the rear IC, so that the magnetic operation part 12 on the back side can be attached to the switch 8. All you have to do is make contact.

Note that in the vibrating electric shaver, an electromagnet may be used instead of the motor 4. Further, the electric circuit is not limited to the one shown in FIG. 8, as long as it is possible to switch between the first and second batteries 5 and 6 in conjunction with the operation of the first and second switches 7 and 8.

It can be implemented with appropriate changes.

As explained above, according to the present invention, in an electric razor that includes a built-in second battery 6 as a backup power source in addition to the first battery 5 that energizes a load 4 such as a motor, the first battery 5 is Separately from the first switch operating knob 7 that opens and closes the energizing circuit to the load 4, a second switch 8 that opens and closes the energizing circuit to the load 4 of the second battery 6 is provided to connect the first battery 5 and the second battery 6. can be operated separately using dedicated switches 7 and 8. Therefore, the first battery 5 and the second battery 6 can be easily used separately, and the first battery 5 and the second battery 6 can be operated using one common operation knob. There is no longer an erroneous operation in which the second battery is operated when a drive operation should be performed, and the second battery 6 can be prevented from being depleted unexpectedly due to the erroneous operation, and its backup power supply function can be ensured. In addition, since the operation of driving the second battery 6 is performed by a dedicated switch 8, the first battery 5 and the second battery
Compared to the shared operation knob of the battery 6, the first switch operation knob 7
The frequency of use of the operating knob 7 is reduced, and the durability of the operating knob 7 can be improved accordingly.

In particular, in this invention, the mirror 11. Cleaning brush 13. An operating part 12 is provided on accessories such as the outer blade protection cap 15, and the second switch 8 can be opened and closed using the operating part 12. therefore.

The opening/closing operation of the second switch 8 is more difficult than the opening/closing operation of the first switch 7.
Inadvertent operation of the switch 8 can be prevented as much as possible, and its backup power supply function can be fully ensured.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention. Fig. 1 is a perspective view showing a vibrating electric shaver according to the first embodiment with the mirror removed, and Fig. 2 shows the pressing operation mode of the second sinch. FIG. Figures 3 and 4 show the second embodiment, Figure 2 is a perspective view of the rotary electric shaver with the cleaning brush removed, and Figure 4 shows the state in which the second switch/cutter is pressed. FIG. FIG. 5 is a perspective view showing the vibrating electric shaver according to the third embodiment with the first outer blade protection cap removed. FIG. 6 is a perspective view showing a vibrating electric shaver according to a fourth embodiment with the mirror removed. FIG. 7 is a perspective view with the mirror turned over. No. 81 is an electric circuit diagram, and FIG. 9 (a+ and fb) is an explanatory diagram showing battery switching states. ■・・・Body case. 2...Inner blade. 3... Outer blade. 4...Motor (load). 5...First battery. 6...Second battery. 7. . . . 1st switch. 7a... Operation knob of the first switch. 8...Second switch. 9...Opening. 11...Mirror (accessory). 12...Operation unit. 13... Blue cleaning flyer (I size accessory). 15... Outer blade protection cap (accessory). Figure 8 Figure 9 (a) L,,--J Figure 9 (b) Procedural formalities (method) July 1, 1980 Commissioner of the Japan Patent Office Kazuo Wakasugi 2 Name of invention Electric shaver 3゜Relationship with the case of the person making the amendment Patent applicant address 4680 Oaza Ikata, Katashiro-cho, Tagawa-gun, Fukuoka Name Kyushu Hitachi Maxell Co., Ltd. 4, Agent [Co., Ltd.] 530 Do (06) 312
-4738 Address 3-21 Suehiro-cho, Kita-ku, Osaka (1)
1 from the 6th line to the 7th line on page 13 of the specification: ``
The text "Figure 2" has been corrected to read "Figure 3." q bottle pehe

Claims (1)

[Scope of Claims] (11 One load 4 and 1 each include a first battery 5 and a second battery 6 that serve as power sources for the load 4, and a current supply circuit of the first battery 5 to the load 4 can be opened and closed. a first switch 7 to
A second switch 8 that can open and close the energizing circuit of the second battery 6 to the load 4, and an operation part 12 that can open and close the second switch 8.It is a detachable accessory for the main body case 1. An electric razor equipped with (2) The electric shaver according to claim 1, wherein the second switch 8 is incorporated into the main body case 1 and faces the opening 9 of the case 1. (3) The electric shaver according to claim 1 or 2, wherein the operation mode of the second switch 8 is a bushing type. (4) The electric shaver according to claim 1 or 2, wherein the second switch 8 is operated in a sliding manner. (5) The electric shaver according to claim 1, wherein the second switch 8 is a reed switch. (6) The electric shaver according to any one of claims 1, 2, 3, 4, or 5, wherein the accessory is a mirror 11. (7) The electric shaver according to any one of claims 1, 2, 3, 5, 4, and 5, which is an accessory force q cleaning brush 13. (8) The electric shaver according to any one of claims 1, 2, and 3, wherein the accessory is an outer blade protection cap 15. (9) The electric shaver according to any one of claims 2, 3, 4, 1, 6, 7, or 8, wherein the operating portion 12 of the accessory has a protruding shape. 00) The electric shaver according to claim 5, wherein the operating part 12 of the accessory is a magnet.