JPH0236453Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to an electric shaver that has a built-in sub-battery in addition to a main battery as its power source.

[Conventional technology]

Some electric shavers each have a built-in main battery and a sub-battery that drive a motor, and are equipped with a switch that selectively switches between the main battery and the sub-battery. According to this, when a rechargeable battery is used as the main battery in normal use, when the battery becomes insufficient in output due to use and there is no time to wait for it to be charged, in an emergency, the battery can be used via a changeover switch. It is convenient because you can use a sub battery.

[The problem that the idea aims to solve]

However, the above-mentioned changeover switch normally adopts a configuration in which one operation button can be switched between two positions, the main battery drive position and the sub battery drive position, but when operating it, it may occasionally stop at the main battery drive position. If you accidentally move the sub battery to the drive position when you should have, and use it without noticing, you will inadvertently waste the power of the sub battery, causing the sub battery to output power in case of emergency use when there is no time to wait for the main battery to charge. The inconvenience was that this was of no use.

The purpose of this invention is to solve this problem and prevent the sub-battery from being erroneously turned on and wasted during normal operation.

[Means to solve the problem]

In order to achieve the above object, the electric shaver of this invention has a main body case 1 as shown in FIG.
In an electric shaver in which an outer cutter 25 is provided on the upper part of the main body case 1, and a drive motor 18, a main battery 27, and a sub-battery 28 are housed in the main body case 1, the outer cutter 25 is provided on the same outer surface of the main body case 1.
The drive motor 1 of the main battery 27 is located at a lower position.
On/off operation buttons 35 and 36 for opening and closing the energization circuit to the drive motor 18 are arranged further below the on/off operation buttons 35 and 36 and closer to the lower end of the main body case 1. A battery switching operation button 37 is provided for switching the circuit from the main battery 27 to the sub battery 28 side.

[Effect]

Since the on/off operation buttons 35, 36 and the battery switching operation button 37 are arranged one above the other on the same outer surface of the main body case 1, the on/off operation buttons 35, 36 and the battery switching operation button 37 are arranged vertically. It is easy to use them properly and prevents erroneous operation.

In particular, since the battery switching operation button 37 is positioned below the on/off operation buttons 35 and 36 and closer to the lower end of the main body case 1,
The battery switching operation button 37 is more difficult to operate than the on/off operation buttons 35 and 36 when the user holds the button, and accidental erroneous operation of the battery switching operation button 37 can be effectively prevented.

〔Example〕

The drawing shows an embodiment of the electric shaver according to the present invention.

(Body case structure) In Figs. 2 to 7, the main body case 1 is formed into a rectangular cylindrical shape, and is made up of front and rear plastic cases 1a and 1b which are butted together and integrally connected with screws 2, etc. A mount 3 is fixed to the top of the mount 1, and the head case 4 is placed on the top of the mount 3 in an upright position in which it is substantially in a straight line with the main case 1, and in a forward tilted position in which it is tilted toward the front side of the main case 1. It is pivotally connected around a shaft 5 so as to be freely swingable.

Specifically, as shown in FIG. 5, shafts 5, 5 protruding from the left and right ends of the mounting base 3 are rotatably inserted into shaft holes 6, 6 recessed in the left and right inner surfaces of the head case 4. Holes 8 are fitted and provided at the front and rear of the elastic moderation plates 7, 7, which are installed upright at the left and right ends of the mounting base 3.
9 is selectively engaged with the engagers 10, 10 provided on the left and right inner surfaces of the head case 4, the head case 4 can be moved between an upright position (see Fig. 2) and a forward tilted position (see Fig. 2). (see Figure 3).

(Inner blade drive mechanism) In FIGS. 5 and 6, a plastic vibrating body 11 that elastically swings and deforms in the left-right direction is attached to the inside of the head case 4, and a vibrator 1
1 has a pin 12 erected in a forward-slanted manner at the center of the upper end surface and protrudes upward from the central opening 13 of the head case 4;
An inner cutter 14 is attached to this pin 12 via an inner cutter holder 15. On the other hand, a motor 18 is arranged inside the main body case 1, and the motor shaft 18a is connected to the mounting base 3.
An eccentric cam 21 that protrudes upward from the opening 19 of the vibrating body 19 and has an eccentric pin 20 is fixed to the protruding end thereof, and the eccentric pin 20 is slidably engaged in a groove 22 provided in the front and back direction on the lower surface of the vibrating body 11. A long groove 24 long in the front-rear direction provided on the lower surface of the slider 23
engage with. In such a case, the eccentric cam 21 is rotated by the drive of the motor 18, and the slider 23 that engages with the eccentric pin 20 of this cam 21 vibrates back and forth to the left and right, vibrating the vibrating body 11 in the same direction. The inner cutter 14 vibrates back and forth from side to side due to the vibration.
A mesh-like outer cutter 25 is removably fitted onto the head case 4 via an outer cutter holder 26, and the inner cutter 14 is in sliding contact with the inner surface of the outer cutter 25.

(Interior parts to main body case) In FIG. 7, in addition to the motor 18, inside the main body case 1, a main battery 27 for normal use that supplies power to the motor 18, a spare sub-battery 28, and a press circuit board 29 are built-in. Usually, the main battery 27 is a rechargeable storage battery (such as a Nikkad battery), but the sub-battery 28 may be either a storage battery or a dry battery, and it does not matter whether it is rechargeable or not. On the press circuit board 29, there is an inner blade drive switch 30 that opens and closes the energizing circuit to the motor 18, and an inner blade drive switch 30 that connects the energizing circuit to the motor 18 from the main battery 27 in a steady state to the sub battery 28.
A changeover switch 31 that can be switched to the side, a transformer 32, and a contact plate 34 that opens and closes the charging circuit when the charging plug 33 is moved in and out are assembled. FIG. 14 shows the electrical circuit.

(On/off mechanism of swing operation mechanism and inner blade drive switch) On the front side of the main body case 1, which is on the same side as the tilting direction of the head case 4, there are a push-type on operation button 35 and an off operation button. 36 are arranged side by side on the left and right, and at the same time when the inner blade drive switch 30 is turned on by pushing the on operation button 35,
The head case 4 changes to a forward tilted position, and the inner blade drive switch 3 is turned off by pushing the off operation button 36.
0 is turned off, the head case 4 returns to the upright position.

Specifically, FIGS. 2 to 5 and 8
In the figures to FIG. 10, a seesaw plate 38 is arranged inside the main body case 1 in correspondence with the on-operation button 35 and the off-operation button 36. As shown in FIG. The seesaw plate 38 is bent into a dogleg shape, and a fulcrum part 39, which is a bent part at the center, is placed on a support plate 40 hanging downward from the mounting base 3, and the fulcrum part 39
The on operation button 35 is on one end 41 and the other end 4
2, an off operation button 36 is mounted on each. By alternately pushing the on operation button 35 and the off operation button 36, the seesaw plate 38
The one end 41 and the other end 42 alternately swing back and forth about the fulcrum part 39. And on operation button 3
A switch operating piece 43 is formed at the tip of one end 41 to which the switch 5 is mounted, extending to the position of the inner blade drive switch 30, and the other end 4 is mounted to which the off operating button 36 is mounted.
A swing operation piece 44 is formed at the tip of the head case 4, and the operation piece 44 is linked to the head case 4 via a swing plate 45. The oscillating plate 45 is formed into a generally triangular shape, and is attached to the bearing 1 near the right side wall 46 of the main body case 1.
7 so as to be swingable around a shaft 47,
A pin 49 is protruded from the end of the front beveled edge 48 below the shaft 47, and this pin 49 is engaged with a long hole 50 formed vertically in the swing operation piece 44. A pin 51 is also protruded from the end of the beveled edge 48 above the shaft 47, and this pin 51 protrudes downward from the right end of the head case 4.
It is engaged with the elongated hole 53 of No. 2.

In such a case, as shown in Fig. 1, turn the front side of the main body case 1 toward you and place your thumb on the front side.
When using the grip with the remaining fingers on the rear side, when you put your thumb on the ON operation button 35 and press it, the seesaw plate 38 moves one end 41 backward and the other end 42 as shown in FIG. move forward, and as this swings, the switch operation piece 4
3 contacts the inner blade drive switch 30 and turns it on, and at the same time, the oscillating plate 45 rotates around the shaft 47 in the direction of arrow A in FIG. The head case 4 is swung to a forward tilted position around the shaft 5 (see FIG. 3).

Furthermore, when the thumb is put back on the off operation button 36 and the button is pressed, the seesaw plate 38 is pushed in the opposite direction as shown in FIGS. 30 is turned off, and at the same time, the swing plate 45 swings around the shaft 47 in the opposite direction to rotate the head case 4 back to the upright position around the shaft 5 (see FIG. 2).

(Lock Means) A lock means is provided to prevent the head case 4 from swinging inadvertently or the inner blade drive switch 30 from being turned on when the on-operation button 35 is pressed during carrying, storage, or storage. 2 and 8, the lock means includes a lock button 54 on the outer surface of the right side wall 46 of the main body case 1 so as to be slidable in the vertical direction.
has a lock pin 55 on this inner surface, and in normal conditions, the lock pin 55 is located at a position below the shaft 47 on the front end bevel 48 of the swing plate 45,
The oscillating plate 45 is prevented from swinging even if the ON operation button 35 is pressed, and the lock button 54 is
When the lock pin 55 is slid downward, the lock pin 55 comes off the front end bevel 48 of the swing plate 45, and when the on operation button 35 is pushed, the seesaw plate 3
8, the swing plate 45 can swing as described above.

(Battery Switching Means) On the front outer surface of the main body case 1, as shown in FIGS. 2, 8, and 11 to 13, in addition to the on/off operation buttons 35 and 36, there are A push-type battery switching operation button 37 is installed. A switching plate 56 is arranged inside the main body case 1 corresponding to the battery switching operation button 37.
The switching plate 56 is arranged to be able to slide vertically on the fixed terminal of the switching switch 31, has an inclined surface 67 on a part of its front side, and has a movable terminal 5 on its rear side.
It has 8. The battery switching operation button 37 is on the slope 59
The slope 59 is changed to the slope 57 by pushing the battery switching operation button 37.
When the switching plate 56 slides downward, the movable terminal 58 comes into contact with the fixed terminal of the switching switch 31, and the main battery 27 in the steady state is switched off.
It is switched from to the sub battery 28 side.

In order to prevent the battery switching operation button 37 from being accidentally switched, the operation button 37 is located next to the on/off operation buttons 35 and 3.
By setting the button further below 6 and closer to the lower end of the main body case 1, it is made more difficult to operate than the on/off operation buttons 35 and 36 when the main body case 1 is held by hand.

This switching means using the battery switching operation button 37 is a means for maintaining the changeover switch 31 on the main battery 27 side in a steady state and switching it to the sub battery 28 side when the head case is in an upright position, and disabling the operation of the head case. With the tilting operation of the case 4, the switching operation disabled state of the changeover switch 31 is released and the sub battery 28 is released.
and a means for automatically switching the changeover switch 31 to the main battery 27 side in a steady state as the head case 4 is returned from the tilted position to the upright position.

Specifically, a switching lever 71 is arranged between the switching plate 56 and the oscillating plate 45, and the switching lever 61 has a recess 62 at the upper end of the lever body, and the oscillating plate is placed in the recess 62. An engaging element 63 protruding from the lower edge of the lever body is engaged, and an engaging step 64 is provided on one side of the lower end of the lever main body, and the engaging step 64 is connected to one side of the upper end of the switching plate 56. The engagement step portion 65 provided in the section is engaged. When the head case 4 is in the upright position, the engagement step 64 of the switching lever 61 and the engagement step 65 of the switching plate 56 are engaged.
Therefore, at this time, the battery switching operation button 37
Even if the switch is pushed, the switching plate 56 cannot be slid downward, making it impossible to switch to the sub-battery 28 side. However, the on operation button 3
5 is pushed and the inner blade drive switch 30 is turned on via the seesaw plate 38, at the same time the swing plate 45 swings and the head case 4 assumes a forward tilted position.
At the same time, the switching lever 61 slides downward via the engagement member 63 due to the swinging of the swing plate 45, and the engagement step portion 64 of the switching plate 56 moves downward.
spaced downward from. Only at this time can the switching plate 56 be slid downward. Therefore, when the battery switching operation button 37 is pushed at this time, the switching plate 56 slides downward through the contact action of the slopes 57 and 59, thereby switching the switching switch 31 to the sub battery 28 side. When the off operation button 36 is pressed while the switch is switched to the sub battery 28 side, the switching lever 61 slides the switching plate 56 upward via the seesaw plate 38, and the switching plate 56 returns to its original position. At the same time, the battery switching operation button 37 is returned to the slope 57,
It protrudes through the abutting action of 59.

[Another example]

The entire details of the illustrated embodiment are as described above.
The present invention is not limited to this. for example,
As shown in FIG. 15, the charging plug 33 is made to be able to protrude to the front side of the main body case 1 on the tilting side of the head case. According to this, if the head case 4 is in a forward leaning position during charging, it will be difficult or impossible to insert the charging plug 33 into the outlet, so the head case 4 must be placed in an upright position.
In other words, it is necessary to turn off the inner blade drive switch 30 to charge the battery, and it is therefore possible to prevent an erroneous charging operation in which charging is performed with the inner blade drive switch 30 on.

The means for swinging the head case 4 include the on operation button 35, the off operation buttons 35, 36, the seesaw plate 38, and the swing plate 4.
Instead of the operation means consisting of the combination of the above, the head case 4 may be held directly in the hand and the head case 4 can be operated by swinging.

Furthermore, means for disabling the switching operation of the changeover switch 31 when the head case 4 is in an upright position, means for releasing the restriction on the operation of the changeover switch 31 when the head case 4 is tilted forward, and a head The means for switching the changeover switch 31 from the main battery 27 in the steady state to the sub battery 28 side when changing the case 4 from the forward leaning position to the upright position are each comprised of the swing plate 45, the changeover plate 56, and the changeover lever 61. It may be something other than that, and the design can be changed as appropriate.

[Effect of idea]

As explained above, according to the electric shaver of this invention, on the same outer surface of the main body case 1,
Since the off operation buttons 35, 36 and the battery switching operation button 37 are arranged one above the other, the former buttons 35, 36 and the latter button 37 can be easily used properly, and erroneous operation thereof can be prevented.
In particular, the battery switching operation button 37 is set at a position below the buttons 35, 36 and closer to the main body case 1 so that it is more difficult to operate than the on/off operation buttons 35, 36. Erroneous operation of the operation button 37 can be avoided as much as possible. Therefore, it is possible to prevent the sub-battery 28 from being inadvertently wasted due to erroneous operation of the battery switching operation button 37, and it is advantageous that its backup power supply function can be ensured.

[Brief explanation of the drawing]

Figures 1 to 14 show an embodiment of the electric shaver according to the present invention, with Figure 1 being an overall front view and Figure 2 being a sectional view of the main parts with the head case in an upright position. Figure 3 is a sectional view of main parts with the head case tilted forward, Figure 4 is a perspective view of the overall appearance, Figure 5 is a longitudinal front view, Figure 6 is a longitudinal side view, and Figure 7 is a longitudinal sectional view. The figure is an exploded perspective view of the entire system, Figure 8 is an exploded perspective view of the swing operation system, Figure 9 is a cross-sectional view showing the on operation button and seesaw plate with the off operation button pressed, and Figure 10 is an exploded perspective view of the swing operation system. A cross-sectional view showing the ON operation button and the seesaw plate in a state where the ON operation button is pressed, and Figure 11 shows the battery switching operation button, switching plate, and
12 is a sectional view showing the state before the battery switching operation button is pressed, FIG. 13 is a sectional view showing the battery switching operation button in a state where it is pressed. Figure 14 is an electrical circuit diagram. FIG. 15 is a side view showing an electric shaver according to another embodiment of the present invention in a charging state. 1... Body case, 14... Inner blade, 25... Outer blade, 26... Outer blade holder, 27... Main battery,
28...Sub battery, 35...On operation button, 3
6...Off operation button, 37...Battery switching operation button.

Claims (1)

[Claims for Utility Model Registration] An outer blade 25 is provided on the upper part of the main body case 1, and a drive motor 18, a main battery 27, and a sub-battery 28 are housed inside the main body case 1. A drive motor 18 for the main battery 27 is located below the outer blade 25 on the surface.
On/off operation button 3 to open/close the energized circuit to
5 and 36 are arranged, and the energizing circuit for the drive motor 18 is switched from the main battery 27 to the sub battery 28 side, further below the on/off operation buttons 35 and 36 and closer to the lower end of the main body case 1. An electric shaver characterized by having a battery switching operation button 37 arranged therein.