JPS6161830B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for displaying the number of uses of a battery-powered razor using a dry battery or a rechargeable battery as a power source.

Conventional battery-powered razors determine whether the battery capacity of the dry cell or rechargeable battery has run out based on factors such as a decrease in the number of rotations of the inner blade. I didn't know if it was there or not. In addition, the operation of the usage count display device is linked to the on/off switch.
After turning off the switch, I had to operate the switch again when shaving the unshaved hair, so the number-of-use display device operated for more than one frame per shave, making it impossible to know the exact battery capacity.

The present invention has been proposed in view of the above-mentioned problems, and its purpose is to be able to notify in advance when it is time to replace or charge the dry cell battery, and to enable shaving while the battery capacity is sufficient. To provide a device for displaying the number of uses of a battery-powered razor, which allows the user to check the number of times the razor is used based on the battery capacity, based on the user's individual differences, such as the thickness of the beard and how the razor is used. .

The present invention will be explained in detail below based on examples. 1st
In Figures 4 and 7, the main body case 1
is formed into two parts made of synthetic resin and joined together by screws 2. A blade mount 3 is attached to the main body case 1, and a dome-shaped fixed blade 4 is screwed onto the blade mount 3. A movable blade 5 is in sliding contact with the inner surface of the fixed blade 4, and a motor 7 is connected to the movable blade 5 via a joint 6. The motor 7 is attached to the blade mount 3, and the electric fitting 8 and the on/off switch 9
Motor 7 is connected to rechargeable battery 10 via.
A switch handle 11 of the on-off switch 9 is ring-shaped and is rotatably fitted between the main body case 1 and the blade mount 3. A blade protection cover 12 that covers the fixed blade 4 is made of a synthetic resin material and is formed into a dome shape, and a protrusion 13, which is an embodiment of the operating means, is formed at the open end of the blade protection cover 12. The usage count display device 14 is incorporated into the board 15 and stored in the storage recess 16 of the board 15 formed in the main body case 1.
Hooks 17 formed on both sides of the storage recess 16 are locked into locking holes (not shown) formed in the housing recess 16 for installation. A first shaft 19 rotatably supports the display board 18, a second shaft 21 rotatably supports the feed wheel 20, and a feed lever 22 is rotatably supported on the back surface of the substrate 15. A third shaft 23 is formed, a semi-circular display slit 24 through which a portion of the display panel 18 is exposed, and a knob insertion hole 26 into which a return knob 25 (to be described later) is inserted. The display plate 18 is a gear 2 which has gears cut on a part of its outer periphery within a range that can rotate up to a predetermined maximum value on the scale.
7, and has a color display portion 28 corresponding to the display slit 24. A cam portion 29 is formed at the center on the opposite side of the color display portion 28, and a cam surface 30 on the outer periphery of the cam portion 29 has a diameter that gradually becomes shorter in the direction opposite to the direction of return rotation of the display plate 18. . A stopper protrusion 31 is formed on the cam portion side of the display plate 18 at a position a predetermined distance away from the center. An arcuate groove 32 for restricting rotation is formed at a symmetrical position of the color display section 28 of the display board 18 so that a protrusion 33 formed on the substrate 15 engages with the arcuate groove 32 when the display board 18 is pivotally supported on the first shaft 19. I have to. The feed car 20 is the display board 1
It consists of a gear 34 and a pawl 35 that mesh with the gear 27 of No. 8. The feed lever 22 includes a lever portion 37 extending radially from the bearing portion 36 and a lever portion 37 .
an L-shaped spring portion 38 integrally formed at the tip of the
It consists of an L-shaped elastic pawl 39 that extends from the bearing part 36 at a substantially right angle to the lever part 37, and when it is pivotally supported on the third shaft 23, the tip of the L-shaped spring part 38 touches the base plate 15.
Under the spring action, the vicinity of the tip of the lever portion 37 is supported by the positioning protrusion 41 formed on the base plate 15, and at this time, the tip of the L-shaped elastic claw 39 is engaged with the spring receiving protrusion 40 formed on the base plate 15. The car 20 faces the ratchet wheel 35. When the board 15 is attached to the main body case 1, the tip of the lever portion 37 is exposed from the opening 42 of the main body case 1, as shown in FIG. The lever portion 37 is formed with an inclined surface 44 that is pressed by the inclined surface 43 of the protrusion 13 of the blade protection cover 12, as shown in FIG. The operator 45 is integrally formed with a U-shaped return spring section 46, and the distal end of the return spring section 46 is held by a holding section 47 formed on the base plate 15. The button 4 is attached to the button engaging protrusion 48 formed on the operator 45.
9, and the knob 25 of this button 49.
is slidably inserted into the knob insertion hole 26 of the board 15. The positioning protrusion 51 of the operator 45 is engaged with the positioning rib 52 of the board 15, and a stable state is achieved. This operator 45 has a claw 5 in its stable state.
2 is engaged with the ratchet wheel 35, and its pawl 53 holds the feed wheel 20 and prevents it from reversing. Operator 4
A return arm 54 extending from 5 is formed to face the cam surface 30 of the cam portion 29, and a projection 55 for preventing rotation of the display plate is formed on the side surface of the operator 45 so as to face the stopper projection 31. There is.

Next, the operating state of the present invention will be explained with reference to FIGS. 4 to 9. As the fixed blade 4 is covered with the blade protection cover 12, the inclined surface 44 of the lever part 37 is pushed by the inclined surface 43 of the protrusion 13 of the blade protection cover 12 as shown in FIGS. It rotates to the position shown by the imaginary line in FIG. 4, and accordingly, the L-shaped elastic pawl 39 rotates and engages with the groove of the ratchet wheel 35, causing the ratchet wheel 35 to rotate by a full angle. This rotation of the ratchet wheel 35 causes the gear 34 and the gear 27 to rotate, and the display board 18 to rotate. As a result, a color display portion 28 (see FIG. 1) appears at one end of the display slit 24 of the substrate 15, and the display plate 18 is moved above the display slit 24 by one scale corresponding to one use. When the blade protection cover 12 is removed from the fixed blade 4, the lever part 37
Since the lever part 37 is released from the state of being pressed by the projection 13, the L-shaped elastic pawl 39 is released from the ratchet wheel 35 at the same time as the lever part 37 returns to its original position due to the action of the L-shaped spring part 38. At this time, the pawl 53 of the operator 45
5, so there is no reversal and no excessive rotation. Gear 2 formed on display board 18
Once the display plate 18 has rotated through the number of teeth of 7, the display plate 18 will no longer rotate even if the blade protection cover 12 is attached or removed. To return the display board 18, operate the return knob 25 (see Figure 1) and press the operator 45.
is pushed down in the direction of arrow N shown in FIG. 5 against the spring action of the return spring portion 46. Due to this movement of the operator 45, the claw 53 of the operator 45 separates from the ratchet wheel 35 of the feed wheel 20, and the feed wheel 20 becomes free, and the protrusion 55 hits the stopper protrusion 31, and the protrusion 55 pushes the stopper protrusion 31. As a result, the display board 18 rotates in the reverse direction as indicated by arrow M in the initial stage of return. Further, as the operator 45 continues to move, the side surface of the return arm 54 pushes the cam surface 30, so that the display plate 18 continues to rotate in reverse as shown in FIG. 6 and returns to its original position, returning to zero. Return knob 2
5 (see Figure 1), the return spring part 46
The operator 45 returns to its original position due to the action of
The ratchet wheel 35 is held by elastically engaging with the ratchet wheel 35.

In the embodiments, a rotary battery-powered razor has been described, but the present invention may also be applied to a reciprocating battery-powered razor. The blade protection cover may also cover the main body of the battery-powered razor.

As described above, the device for displaying the number of uses of a battery-powered razor according to the present invention displays the number of times of use based on the fixed blade attached to the razor body, the blade protection cover that covers the fixed blade, and the attachment and detachment of the blade protection cover. and an operating means for operating the display device when the blade protection cover is attached or detached. This has the effect of making it clear how many times the battery has been used, allowing you to check when it is time to replace or charge the next battery.Furthermore, by making you aware of the need to protect the blade with the blade protection cover, you can ensure that the blade is protected with the blade protection cover. It has the effect of being able to protect you.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a battery-powered razor to which an embodiment of the present invention is applied, Fig. 2 is a sectional view of Fig. 1, and Fig. 3 is a sectional view of Fig. 1.
The figure is an exploded perspective view of the use count display device, FIG. 4 is a cutaway plan view showing the assembled state of the use count display device, FIGS. 5 and 6 are cutaway plan views showing the operating state of the present invention, and FIG. 7 9 to 9 are schematic diagrams showing the operating state of the present invention. 4...Fixed blade, 12...Blade protection cover, 13...
...Operating means, 14...Usage count display device.

Claims (1)

[Scope of Claims] 1. A fixed blade attached to a razor body, a blade protective cover that covers the fixed blade, a display device that displays the number of uses by attaching and detaching the blade protective cover, and a display device that displays the number of uses by attaching and detaching the blade protective cover. A device for displaying the number of times a battery-powered razor has been used, characterized in that it further comprises an operating means for operating the display device when the razor is shaved. 2. The use count display device exposed in the opening is activated by inserting the operating means formed on the blade protection cover into an opening formed in the razor body. A device that displays the number of uses for battery-powered razors.