JPS6150469B2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to an electric shaver.

A counter device for an electric shaver allows you to know in advance the battery life or the time to replace the battery, so that you can always shave properly. However, this counter device has the problem that it is necessary to return to zero each time the battery is replaced, which increases the number of operations and makes it difficult to use.

Therefore, an object of the present invention is to provide an electric shaver that can be returned to zero without increasing the number of operations and that prevents the user from forgetting to perform the return operation.

In this invention, the return to zero of the counter device is linked to the protruding and retracting operation of the charging plug. Therefore, when charging by protruding the plug, the counter device returns to zero, and there is no need to perform a separate operation, making it easy to use without forgetting to perform an operation.

An embodiment of the invention is shown in FIGS. 1 to 7. That is, the razor body 1 is connected to the upper housing 2.
and a lower housing 3, which are connected together with screws 4. A head block 6 is attached to the head part 5 of the razor body 1, a counter block 8 is attached to the front recess 7 of the razor body 1, and an electric block 9 is attached to the body of the razor body 1.

The head block 6 has a motor 11 mounted on the blade mount 10.
The blade block 12 is attached to the upper side of the blade mount 10, and the inner blade body (not shown) of the blade block 12 is connected to the joint 13 of the motor 11. The switch handle 14 is rotatably fitted around the outer periphery of the blade mount 10, and the body of the blade mount 10 is attached to the opening 5a of the head 5 of the razor body 1. In the switch handle 14, 15 is a lock button, 16 is a click protrusion, and 17 is a lock button.
18 is a rotation range regulating protrusion, and 18 is a switch protrusion.

The electric block 9 includes a storage battery 19, a printed circuit board 20 on which electrical components such as a charging circuit are mounted, a switch chassis 22 having a motor pressure contact spring 21, a switch terminal 23 that engages the switch protrusion 18 to operate the switch, a plug chassis 24, and It includes a plug 25. With these configurations, when the plug 25 is pushed out and inserted into an outlet, the storage battery 19 is charged, and when the switch handle 14 is operated and the switch terminal 23 is slid, the pressure contact spring 21 is connected to the storage battery 19, and the motor 11 is connected. Powered. In this way, the motor 11 operates, and the joint 1
3 rotates, the inner blade body moves, and blade block 1
Cut off the hair that has entered the outer blade hole in step 2.

The counter block 8 has counter components assembled into a flat base 26, and is housed in a recess 7 of the base 26 formed on the upper surface of the upper housing 2, and hooks 27 formed on both sides of the base 26 are formed in the recess 7. It is installed by being locked into the locking hole 28 that has been formed. The surface of the base 26 has a recess 29 at the center of its front edge, and the rotation range regulating protrusion 17 of the switch handle 14 is located within the recess 29 when the switch handle 14 is attached to the upper housing 2.

There are three shafts 6 on the back side of the base 26 as shown in FIG.
2 to 64 and a semicircular arc-shaped display slit 65 between the axes 62 to 64. A display plate 67 is rotatably supported on the shaft 62, and the shafts 63 and 64 have a retaining split 68 at their tips, and a feed wheel 69 is provided on the shaft 63, and a feed lever 70 is provided on the shaft 64, respectively. Pivotally supported. The display plate 67 is disc-shaped, and a partially toothed gear 71 is formed in a part of the outer peripheral surface, that is, in a range where the display plate 67 can rotate up to a predetermined maximum value on the scale. It has a color display section 72 (FIG. 1) that displays the remaining capacity,
A cam portion 73 is formed at the center on the opposite side of the color display portion 72, and a cam surface 74 on the outer periphery of the cam portion 73 has a diameter that gradually becomes shorter in the direction opposite to the direction of return rotation of the display plate 67 (forward direction). ing. Further, a stopper protrusion 75 is formed at a position a predetermined distance from the center on the cam portion side of the display plate 67, and a rotation regulating arcuate groove 76 is formed at a position symmetrical to the color display portion 72 of the display plate 67 (FIG. 5). , when the base 26 is supported on the shaft 62, a protrusion 77 formed on the base 26 engages with the arcuate groove 76. A feed wheel 69 supported by a shaft 63 is composed of a gear 78 and a ratchet wheel 79 that mesh with a partially toothed gear 71 of the display plate 67, and when the feed wheel 69 rotates, the display plate 67 rotates. The feed lever 70 includes a lever portion 81 extending radially from a bearing portion 80 and a lever portion 8
L-shaped spring portion 82 integrally formed at the tip of 1
It consists of an L-shaped elastic pawl 83 projecting from the bearing part 80 at a substantially right angle to the lever part 81, and when supported on the shaft 64, the tip of the spring part 82 is formed on the base 26 as shown in FIG. It engages with the spring receiving protrusion 84, and under the action of the spring, the vicinity of the tip of the lever portion 81 is supported by the positioning protrusion 85 formed on the base 26, and at this time, the tip of the elastic pawl 83 engages with the ratchet wheel of the feed wheel 69. 79
to face. Furthermore, when the base 26 is attached to the upper housing 2, the lever portion 8
1 is located so that the tip of the switch protrusion 18 intersects with the on-operation direction side, so that when the switch handle 14 is turned on, the lever part 81 is pushed by the switch protrusion 18 and rotates to the fifth phase image line. ,
The spring portion 82 is elastically deformed, and the elastic pawl 83 engages with the groove of the ratchet wheel 79 to feed the ratchet wheel 79 by one thread.
Then, the display board 67 is rotated by a predetermined angle.

The return member 86 is a substantially rectangular flat plate as shown in FIG.
A detection rod 88 extends from the rear end and is slidably supported by a support plate 89 and a notch 90 provided on the base 26, and a flange 91 is attached to the detection rod 88 between them.
A coil spring 92 is compressed between the flange 91 and the support plate 89, and the detection rod 88 is biased toward the distal end by the action of this spring. This detection rod 8
8 is engaged with one end 93a of a swing lever 93,
It is supported by a swing lever 93. The swinging lever 93 is bifurcated in the shape of a pine needle, and its base 93b is pivotally supported by a shaft 93c formed in the housing 2, and the other end 93d is supported by a transverse protrusion 25a at the rear end of the plug 25, as shown in FIG. ing. Therefore, when the plug 25 is housed in the razor body 1, the detection rod 88 is held against the spring 92.
When the detection rod 88 is pushed into the base 26 and the plug 25 is protruded, the detection rod 88 moves to protrude from the base 26, and as a result, the return member 86
moves back and forth. Further, the positioning protrusion 94 protruding from the side surface of the return member 86 is engaged with the positioning rib 95 of the base 26, resulting in a stable state. In its stable state, the return member 86 has a folded portion 96a at its front end so that the pawl 96, which serves as an elastic locking means, elastically locks onto the ratchet wheel 79 due to its elastic action. The claw 96 holds the feed wheel 69 and prevents it from reversing. In addition, the return arm 97 protruding from the front end shoulder of the return member 86 faces the cam surface 74 of the cam portion 73 (Fig. 6), and as will become clear in the operation described later, the return arm 97 is initially driven to return to the side surface of the return member 86. A projection 98 for preventing rotation of the display plate is formed to face the projection 75.

The operation of this counter device is such that when the switch handle 14 is rotated from OFF to ON, the switch protrusion 18 moves from the solid line to the imaginary line as shown in FIG.
1 is pushed by the switch protrusion 18, bends and rotates the spring part 82 as shown in the imaginary line, and the pawl 83 rotates accordingly.
rotates and engages with the groove of the ratchet wheel 79, rotating the ratchet wheel 79 by one rotation. This rotation of the ratchet 79 causes the gear 7
8 and 71 rotate, and the display board 67 rotates. As a result, the color display portion 72 appears at one end of the display slit 65 of the base 26, and is moved onto the display slit 65 by one scale corresponding to one use. When the switch handle 14 is turned off, the lever portion 81 is released from being pressed by the switch protrusion 18, so that the lever portion 81 returns to its original position due to the action of the spring portion 82, and at the same time the pawl 83 separates from the ratchet wheel 79. At this time, the pawl 96 of the return member 86 is elastically engaged with the ratchet wheel 79, so there is no reverse rotation and no excessive rotation. Similarly, when the switch handle 14 is turned on again from OFF, the display plate 67 further rotates by a predetermined angle, and the display plate 67 continues to rotate according to the number of times the electric shaver is used. The number of uses is indicated by the number of arc-shaped graduations from one end. Therefore, each time the user uses the electric shaver, he or she will be able to tell how many times the electric shaver has been used since charging the battery. Furthermore, generally, once the display plate 67 has finished rotating by the number of teeth of the gear 71 set according to the battery capacity, if the switch handle 14 is turned on or off, the feed wheel 69 only rotates, and the display plate 67 will no longer rotate. Furthermore, further rotation of the display plate 67 is caused by the stopper protrusion 75 of the display plate 67 and the protrusion 98 of the return member 86 being engaged, and furthermore, the protrusion 77 of the return member 86 is engaged with the circular arc groove 76 of the display plate 67. It is regulated by the fact that

When the display board 67 is returned to its original state, it is time to charge the storage battery 19, so the plug 25 is protruded and inserted into the outlet to perform charging. At this time, as the plug 25 is pushed out, the spring 92
Because the swing lever 93 is pushed and rotated by the action of , the return member 86 moves as shown in FIGS. 6 and 7. Due to this movement, the pawl 96 of the return member 86 separates from the pawl wheel 79 of the feed wheel 69, and the feed wheel 69 becomes free, and the protrusion 98 moves to the stopper protrusion 75.
At this time, by pushing the stopper projection 75 with the projection 98, the display plate 67 is rotated in the reverse direction as indicated by the arrow M in the initial stage of return. Further, as the return member 86 continues to move, the side surface of the return arm 97 comes into contact with the cam surface 74 of the cam portion 73, and by pushing the cam surface 74 with the return arm 97, the display plate 67 is moved as shown in FIG. Continue reversing and return to the original position, returning to zero. During this time, the gear 71 of the display board 67 meshes with the gear 78 of the feed wheel 69. On the other hand, when charging is finished, plug 2
5 from the outlet and store the plug 25 inside the razor body 1. At this time, push the other end 93d of the swinging lever 93 with the horizontal protrusion 25a, and the lever 9
3, the return member 86 performs a return operation,
Spring 92 is compressed. As a result, the pawl 96 is again elastically engaged with the ratchet wheel 79 to hold the ratchet wheel 79, and becomes in the counting standby state. In this way, when the battery is in a so-called dead state, by charging the battery and returning the display board to zero, the user can
You can know the maximum number of times you can use the razor before the battery runs out depending on the power consumed by each use of the razor, and you can individually decide how many times the battery can be used until the end of its life. Since a sufficient operating state can be obtained, it is possible to avoid running out of battery in the middle of shaving.

As described above, in the electric shaver of the present invention, since the zero return operation is linked to the protruding and retracting operation of the plug,
This has the effect of eliminating the need for a separate operation and making it easier to use without forgetting to perform a return operation. In an embodiment, when the return means is brought into contact via the swing lever,
The locking means and the operating direction of the plug can be made substantially perpendicular to each other so that the plug can be stored in the outlet, and a compact electric shaver can be obtained.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of an embodiment of the present invention, Fig. 2 is a sectional view thereof, Fig. 3 is an exploded perspective view, Fig. 4 is an exploded perspective view of the counter device, and Fig. 5 is a broken plane of the counter device. 6 and 7 are cutaway plan views of the zero return operation process. 1...Razor body, 8...Counter device, 1
9...Storage battery, 25...Plug, 67...Display board, 69...Feeding wheel, 70...Feeding lever, 86
... Return member, 93 ... Swing lever, 96 ... Claw (locking means).

Claims (1)

[Scope of Claims] 1. A razor body, a plug that is removably provided in the razor body and that charges a storage battery built into the razor body, and a plug that is provided in the razor body and that charges the number of times of use or the remaining capacity of the storage battery. and a counter device that displays the value and returns to zero in conjunction with the protruding and retracting operation of the plug. 2. The counter device includes a display plate, a feed wheel that meshes with the display plate, a feed lever that rotates the feed wheel, a return means with a locking means that restricts the reverse rotation of the feed wheel, and a return means that The electric shaver according to claim 1, further comprising a spring that urges the plug into contact with the plug. 3. The electric shaver according to claim 1 or 2, wherein the operating direction of the return means and the operating direction of the plug are orthogonal to each other and are interlocked via a vibration lever.