JPH0123407Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Industrial application field] This invention is an electric shaver, more specifically an electric shaver with a head case that has inner and outer blades that can be oscillated. It relates to a device that has a built-in spare second battery in addition to the first battery in use.

[Conventional technology]

Conventionally, electric shavers have been able to have a head case with an outer blade in an upright position that is approximately in a straight line with the main body case so that it can be stored compactly when not in use, and when in use, the outer blade can be placed in an upright position so that it can be stored compactly. There is a head case with a swinging head that allows the head case to be tilted for easy application and ease of use.

In addition, in order to enable continued use of the electric shaver even when the first battery normally used as the power source for driving the inner blade (mainly a rechargeable storage battery) is used up, the first battery is used as the power source for driving the inner blade. Some have a built-in spare second battery.

[Problem that the invention attempts to solve]

In the above conventional swing type electric shaver, the worst situation may occur in which both the first battery and the second battery become unusable due to insufficient output. In other words, when the first battery becomes insufficient in output, it switches to the second battery and uses the second battery as a driving power source, but sometimes after this use, it remains switched to the second battery and the original first battery is replaced. Sometimes I forget to put it back on the side. In this case, the next time you use it, it will be used with the second battery still in it, and after repeating this several times, the second battery will be used.
You end up wasting battery power, and forgetting that the first battery has insufficient output, resulting in the worst situation where you are unable to use both the first and second batteries. Something happened.

Therefore, this idea focuses on this fact,
The purpose of this invention is to prevent the occurrence of a situation in which both the first and second batteries become unusable, and also to prevent an accidental decrease in the power of the second battery due to an erroneous switching operation to the second battery.

[Means to solve the problem]

In order to achieve the above object, in this invention, first, the head case 4 having the inner and outer blades 14 and 25 is made swingable with respect to the main body case 1, and the first battery 27, which serves as the power source for driving the inner blades, is made swingable. In addition, there is a spare second battery 28 and a second battery from the first battery 27 in a steady state.
It is assumed that a changeover switch 31 capable of switching to the battery 28 side is provided.

Furthermore, when the head case 4 is in an upright position when not in use, the changeover switch 31 is maintained on the first battery 27 side in a steady state, disabling switching operation to the second battery 28 side, and the head case 4 is kept in an upright position. The switching operation to the second battery 28 side is made possible only when the battery 4 is used in a tilted position.

Further, when the occipital case 4 is returned to the upright position, it is automatically switched to the first battery 27 side in a steady state.

〔Example〕

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

(Body case structure) In Figs. 1 to 6, 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 mounting base 3 is fixed to the upper part of the main body case 1, and the head case 4 is placed on the upper part of the mounting base 3 in an upright position in which it is substantially in a straight line with respect to the main body case 1, and in a forward tilted position in which it is tilted toward the front side of the main body case 1. It is pivotally connected around a shaft 5 for free swinging movement.

Specifically, as shown in FIG. 4, 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 Figure 1) and a tilted position (see Figure 1). (see Figure 2).

(Inner blade drive mechanism) In FIGS. 4 and 5, 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.
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;
This pin 12 attaches an inner cutter 14 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. When this happens, 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.
This vibration causes the inner cutter 14 to reciprocate from side to side. In the head case 4, a mesh-like outer cutter 25 is attached to an outer cutter holder 26.
This outer blade 2 is removably fitted through the
The inner cutter 14 is in sliding contact with the inner surface of the cutter 5.

(Interior Parts to Main Body Case) In Fig. 6, inside the main body case 1, in addition to the motor 18, there is a first battery 27 for normal use that supplies power to the motor 18, and a second battery for backup. 28 and a press circuit board 29 are built in. Usually, the first battery 27 is a rechargeable storage battery (such as a Nikkad), but the second 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 are an inner blade drive switch 30 that opens and closes the energizing circuit to the motor 18, and a changeover switch that can switch the energizing circuit to the motor 18 from the first battery 27 in a steady state to the second battery 28 side. 31, 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. 13th
The figure shows its electrical circuit.

(Owing operation mechanism and inner blade drive switch on/off mechanism) On the front outer surface of the main body case 1, which is on the same side as the tilting direction of the head case 4, there is a push-type first
An operation button 35 and a second operation button 36 are arranged side by side on the left and right, and when the inner blade drive switch 30 is turned on by pushing the first operation button 35, the head case 4 changes to a forward tilted posture, and the second operation button 37 turns off the inner blade drive switch 30, and at the same time, the head case 4 returns to the upright position.

Specifically, Figures 1 to 4 and Figure 7
In the figures to FIG. 9, a seesaw plate 38 is arranged inside the main body case 1 in correspondence with the first operation button 35 and the second operation button 36. As shown in FIG. Seesaw board 3
8 is bent into a dogleg shape, and a fulcrum part 39, which is the bent part at the center, is placed on a support plate 40 suspended downward from the mount 3. One operation button 35 is connected to the other end 42
A second operation button 36 is mounted on the top, respectively.
By alternately pushing the first operation button 35 and the second operation button 36, one end 41 and the other end 4
2 alternates back and forth. And the first operation button 3
A switch operation piece 43 is formed extending to the position of the inner blade drive switch 30 at the tip of one end 41 where the second operation button 36 is attached, and the other end 4 where the second operation button 36 is attached.
A swing operation piece 44 is formed at the tip of the head case 2, and the operation piece 44 is linked to the head case 4 via a swing plate 45. The oscillating plate 45 is formed in 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 the shaft 47,
The end pin 4 below the shaft 47 of its front end bevel 48
9 is provided protrudingly, and this pin 49 is engaged with a long hole 50 formed in the swing operation piece 44 to be elongated in the vertical direction. A lever 52 is provided with a pin 51 protruding downward from the right end of the head case 4.
It is engaged with the long hole 53 of.

In this case, as shown in FIG. 9, when the seesaw plate 38 moves one end 41 backward and the other end 42 forward by pushing the first operation button 35, the switch operation piece 43 activates the inner blade drive switch. 3
At the same time, the oscillating plate 45 swings around the shaft 47 in the direction of arrow A in FIG. The case 4 is rotated around the axis 5 into a forward tilted position (see Fig. 2).

As shown in FIGS. 1 and 8, the seesaw plate 3
8 is pushed in the opposite direction by the push operation of the second operation button 36, the switch operation piece 43 turns off the inner blade drive switch 30, and at the same time, the oscillating plate 45 rotates around the shaft 47 in the direction opposite to that described above. By swinging in the opposite direction, the head case 4 is returned to the upright position and rotated around the shaft 5 (see FIG. 1).

(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 first operation button 35 is pressed during carrying, storage, or storage. 1 and 7, the lock means includes a lock button 54 on the outer surface of the right side wall 46 of the main body case 1, which is slidable vertically.
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,
In order to prevent the oscillating plate 45 from swinging even when the first operation button 35 is pushed, when the lock button 54 is slid downward, the lock pin 55 comes off the front end bevel 48 of the oscillating plate 45 downward, and the first operation is performed. The seesaw plate 38 is moved by pressing the button 35.
The swing plate 45 is made to be able to swing as described above.

(Battery switching means) On the front outer surface of the main body case 1, the first
As shown in FIG. 7, and FIGS. 10 to 12, a push-type third operation button 37 is mounted below the first and second operation buttons 35, 36. A switching plate 56 is arranged inside the main body case 1 corresponding to the third operation button 37. The switching plate 56 is vertically slidably disposed 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 58 on its rear side. The third operation button 37 has a leg portion 60 having a slope 59. When the third operation button 37 is pushed and the slope 59 slides on the slope 57 and the switching plate 66 slides downward, the movable terminal 58 By contacting the fixed terminal of the changeover switch 31, the first battery 27 in the steady state is switched to the second battery 28 side.

This switching means switches the switching switch 31 to the first battery 27 in a steady state when the head case is in an upright position.
means to disable switching to the second battery 28 side by maintaining the switching switch 31 on the side, and a means for switching to the second battery 28 side by releasing the switching inoperable state of the changeover switch 31 with the tilting operation of the head case 4. and means for automatically switching the changeover switch 31 to the first 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 swinging plate 45, and the switching lever 61 has a recess 6 at the upper end of the lever body.
2 to engage an engaging element 63 protruding from the lower edge of the swing plate 45 in the recess 62, and an engaging stepped part 64 on one side of the lower end of the lever body to engage the engaging element 63 protruding from the lower edge of the swing plate 45. Joining section 6
4 is engaged with an engagement step 65 provided on one side of the upper end of the switching plate 56. 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, and therefore, at this time, the third Even if the operation button 37 is pushed, the switching plate 56 cannot be slid downward, making it impossible to switch to the second battery 28 side. However, when the first operation button 35 is pushed and the inner blade drive switch 30 is turned on via the seesaw plate 38, the oscillating plate 45 swings and the head case 4 assumes a forward tilted position. The switching lever 6 is activated by swinging the swing plate 45.
1 slides downward via the engaging member 63, and the engaging step portion 64 is spaced downward from the engaging step portion 65 of the switching plate 56. At this time, the switching plate 56
allows for downward sliding. Therefore, when the third operating button 37 is pressed at this time, the switching plate 56 slides downward through the abutting action on the slopes 57 and 59, and the switching switch 31 is switched to the second battery 2.
Switch to side 8. When the second operation button 36 is pressed while the switch is switched to the second 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. When returned to the position, the third operating button 37 projects through the abutting action of the slopes 57 and 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. 14, the charging plug 33 can protrude to the front side of the main body case 1 on the tilting side of the head case 4. 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, thereby preventing an erroneous charging operation in which charging is performed while the inner blade drive switch 30 is turned on.

Further, as a means for swinging the head case 4, the first and second operation buttons 35, 3 are used.
6. Instead of the operating means consisting of a combination of seesaw plate 38 and swinging plate 45, the head case 4 may be directly held in the hand to perform the swinging operation.

Furthermore, a means for disabling the switching operation of the changeover switch 31 when the head case 4 is in an upright position, a means for releasing the restriction on the operation of the changeover switch 31 in conjunction with the forward tilting movement of the head case 4, and a head When changing the case 4 from the forward leaning position to the upright position, the changeover switch 31 is switched from the first battery 27 in the steady state to the second battery 27.
The means for switching to the battery 28 side are the swing plate 45, the switching plate 56, and the switching lever 6, respectively.
1 may be used, and the design can be changed as appropriate.

[Effect of idea]

As explained above, according to this invention, when the used occipital case 4 is returned to the upright position, it is automatically returned to the first battery 27 side in the steady state, and therefore to the second battery 28 side. After being used in the switched state, when it is to be used again, it is returned to the first battery 27 side, so that the second battery 28 will not be used accidentally during this reuse, and
At this time, if the first battery 27 is insufficient in power, the driver will notice that he has forgotten to charge the battery, and will be prompted to charge it again. Therefore, the first and second batteries 27,
It is possible to prevent all 28 from being used up. In addition, when the head case 4 is in an upright position when not in use, switching operation to the second battery 28 side is disabled, and when the head case 4 is used with the head case 4 tilted, it is only possible to switch to the second battery 28 side. Since the switching operation is made possible, it is possible to prevent erroneous switching operations to the second battery 28 side, and also to prevent accidental waste of the second battery 28.

[Brief explanation of drawings]

Figures 1 to 13 show an embodiment of the electric shaver according to the present invention. Figure 1 is a sectional view of the main part with the head case in an upright position, and Figure 2 is a cross-sectional view of the main part of the head case. Fig. 3 is a perspective view of the overall appearance, Fig. 4 is a longitudinal front view, Fig. 5 is a longitudinal side view, Fig. 6 is an exploded perspective view of the entire Figure 7 is an exploded perspective view of the swing operation system, Figure 8
The figure is a cross-sectional view showing the first operation button and seesaw plate portion with the second operation button pressed, and the 9th
The figure is a cross-sectional view showing the first operation button and seesaw plate portion with the first operation button pushed.
Figure 0 is a front view showing the arrangement of the third operation button, switching plate, and switching lever of the battery switching operation system, Figure 11 is a cross-sectional view showing the state before the third operation button is pressed, and Figure 12 is FIG. 13 is a sectional view showing the state in which the third operation button is pressed, and is an electric circuit diagram. FIG. 14 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, 27...First battery, 28...Second battery, 31
...Selector switch, 35...First operation button, 3
6...Second operation button, 37...Third operation button, 38...Seesaw board.

Claims (1)

[Scope of utility model registration request] A head having inner and outer blades 14 and 25 which are pivotally connected to a main body case 1 and can be pivoted about an axis 5 between an upright position substantially in a straight line with respect to the main body case 1 and an inclined tilted position. The case 4, the first battery 27 and the second battery 28, each of which serves as a driving power source for the inner blade 14, and the energizing circuit for the inner blade driving power source can be switched from the first battery 27 in a steady state to the second battery 28 side. In an electric shaver equipped with a switch 31 and a battery switching means provided between the swinging mechanism of the head case 4 and the switch 31, the battery switching means switches when the head case 4 is in an upright position. A means for maintaining the switch 31 on the first battery 27 side in a steady state and switching it to the second battery 28 side to make it inoperable, and a means for canceling the switching inoperable state of the changeover switch 31 in accordance with the tilting operation of the head case 4. means for enabling switching operation to the second battery 28 side;
An electric shaver comprising means for automatically switching the changeover switch 31 to the first battery 27 side in a steady state as the head case 4 is returned from a tilted position to an upright position.