JPS6113832B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a counter device for an electric shaver.

With conventional electric razors, whether the battery capacity of the storage battery or dry cell battery has run out was determined based on factors such as a decrease in the number of revolutions of the inner blade, so it is difficult to determine whether the battery capacity is sufficient for shaving until you actually use it. I didn't understand. There are also electric razors that have a charging reminder function that alerts you to the battery capacity with a buzzer, etc., but they have the drawback that they cannot remind you to charge at an appropriate time that suits the thickness of your beard and individual differences in usage.

On the other hand, conventional counter devices have been installed in which a display board that displays the number of uses is rotated in conjunction with the operation of the switch, and this display informs the user of the number of uses. −
No. 99495). However, this counter device
There was a drawback that, for example, the return operation of the display board after charging the battery was troublesome.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a counter device for an electric shaver that allows the return of the display board to be performed in a capacitive manner.

An electric shaver to which an embodiment of the present invention is applied is shown in FIGS. 1 to 5. That is, in this electric shaver, a counter block D is provided on the surface of a housing block A. The housing block A connects the upper housing 1 and the lower housing 2 with a connecting screw (not shown), has a blade block 7 and a switch handle 10 at one end, and has a motor and a switch device (not shown) inside thereof. Furthermore, a rechargeable battery and an electric block are built inside the counter block D side. The blade block 7 has an outer cutter 12 on an outer cutter frame 11.
and an inner blade is inscribed inside it. The switch handle 10 is rotatably provided in a ring shape, and has a pair of knob protrusions 27 on its outer surface, as well as a switch protrusion 37 for operating an internal switch device, as shown in FIG. 14
3 is a circumferential groove for attaching a blade protection cap, 30 is a lock button, and 36 is a rotation range regulating projection of the switch handle 10, which is disposed in a notch 39 of the upper housing 1. By operating the switch handle 10, the motor is driven by the electric power of the rechargeable battery, and the blade block 2 is brought into a shaving operation state.

The counter block D has counter components assembled into a flat base 58, and is attached to the housing 1 by engaging hooks 60 formed on both sides of the base 58. As described above, the surface of the base 58 has a recess 39 at the center of its front edge, and the rotation range regulating protrusion 36 of the switch handle 10 is located within the recess 39 when the switch handle 10 is attached to the upper housing 1. On the back side of the base 58 are three shafts 62 to 64 and shafts 62 to 6.
4, a semicircular arc-shaped display slit 65, and a base 58.
A knob insertion hole 66 is formed at one side of the lower part of the handle.
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. Display board 67
is a disc-shaped part of the outer peripheral surface, that is, the partially toothed gear 7 within the range where the display plate 67 can rotate up to the maximum value on the predetermined scale.
1 is formed, and a usage count display section 72 (FIG. 1) is provided with a color display corresponding to the display slit 65.
, and a cam 73 is located at the center on the opposite side of the color display section 72.
The cam surface 74 on the outer periphery of the cam 73 has a diameter that gradually becomes shorter in the direction opposite to the direction of return rotation of the display plate 67 (forward rotation). In addition, the display board 6
A stopper protrusion 75 is formed on the cam side of the shaft 62 at a predetermined distance from the center, and a rotation regulating arcuate groove 76 is formed at a position symmetrical to the color display section 72 of the display plate 67 (FIG. 3). When it is pivoted, a protrusion 77 formed on the base 58 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 claw part 83 that extends from the bearing part 80 at a substantially right angle to the lever part 81, and when it is supported by the shaft 64, the tip of the spring part 82 touches the base as shown in FIG. Spring receiving protrusion 84 formed in 58
The positioning protrusion 85 formed on the base 58 is engaged with the lever portion 81 under the action of the spring.
At this time, the tip of the claw portion 83 is supported by the feed wheel 6.
It faces the ratchet wheel 79 of No. 9. Furthermore, when the base 58 is attached to the upper housing 1, the tip of the lever portion 81 is positioned so as to intersect with the on-operation direction side of the switch protrusion 37 as shown in FIG. When turned on, the lever part 81 is pushed by the switch protrusion 37 and rotates toward the imaginary line in FIG. The display plate 67 is rotated by a predetermined angle after being fed by one mountain.

The operator 86a of the return means 86 is a substantially rectangular flat plate as shown in FIG. 2, and has a horizontal U-shaped spring 87 at its rear end.
A button 92 with a knob 91 is integrally formed, the tip end hook part 88 of which is held by press fitting into a groove of a holding part 89 formed on the base 58, and a button engaging protrusion 90 protruding from the display of the operator 86a. The knob 91 of the button 92 is inserted into the hole 66 of the base 58.
, the button 92 is slidably engaged with a guide recess 93 formed in the base 58, and the operator 86 is thereby slidably moved in the longitudinal direction of the base 58 under the action of the spring 87. Support and operator 8
A positioning protrusion 94 protruding from the side surface of the base 5
It is locked to the positioning rib 95 of 8 and becomes stable. In its stable state, this operator 86a
A claw 9 of a locking means 96 is provided with elasticity by forming a folded portion 96a at the front end.
6' is elastically engaged with the ratchet wheel 79 by its elastic action, and its pawl 96' holds the feed wheel 69 and prevents it from reversing. In addition, a return arm 97 protruding from the shoulder of the front end of the operator 86a faces the cam surface 74 of the cam 73 (Fig. 4), and, as will become clear in the operation described later, returns to the side of the operator 86a and serves as an initial drive. An auxiliary return means 98 is formed, for example, a protrusion for preventing rotation of the display plate, and is arranged to face the protrusion 75.

The operation of this counter device is such that when the switch handle 10 is rotated from OFF to ON, the switch protrusion 37 moves from the solid line to the imaginary line as shown in FIG.
1 is pushed by the switch protrusion 37, bends the spring part 82 and rotates as shown in the imaginary line, and as a result, the claw 83
rotates and engages with the groove of the ratchet wheel 79, and rotates by one thread of the ratchet wheel 79. 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 on the surface of the base 58, and moves onto the display slit 65 by one scale corresponding to one use. When the switch handle 10 is turned off, the lever portion 81 is released from being pressed by the switch protrusion 37, 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, since the pawl 96' of the operating element 86a is elastically engaged with the ratchet wheel 79, there is no reverse rotation and no excessive rotation. Similarly, when the switch handle 10 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 10 is turned on or off, the feed wheel 69 only rotates, and the display plate 67 will no longer rotate. Further, further rotation of the display plate 67 is performed by the display plate 67.
7 stopper protrusion 75 and operation element 86a protrusion 98
Furthermore, the circular arc groove 76 of the display board 67
This is restricted by the engagement of the protrusion 77 of the operator 86a. Therefore, when the display board 67 is to be returned to its original position, it is pressed down in the direction of the return knob 91 shown on the outer surface of the base 58 or in the direction of the arrow N in FIG. This movement of the return knob 91 causes the operator 86a to release the spring 8.
7 in the same direction against the spring action. Due to this movement, the claw 96' of the operator 86a separates from the ratchet wheel 79 of the feed wheel 69, and the feed wheel 69 becomes free, and the protrusion 98 hits the stopper protrusion 75, and the protrusion 98 pushes the stopper protrusion 75. At the initial stage of return, the display plate 67 is rotated in the reverse direction as indicated by arrow M. Further, as the operator 89 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 the return knob 91 is released, both the operator 86 and the button 92 return to their original positions due to the action of the spring 87, the operator 86a is supported by the protrusion 95, and the pawl 96' is elastically engaged with the ratchet wheel 79 and clicked. Hold the car 79. 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 amount of power consumed by the user when using the razor once is determined until the battery becomes dead. You can know the maximum number of times you can use the product, and you can individually decide how many times you can use it until the battery life reaches that point, and you can always get enough power until that number of times is reached, so the battery will run out in the middle of a shave. can be avoided.

In addition, since the auxiliary return means 98 also serves as a stopper to prevent the display board 67 from being moved too far,
Cam 7 of display board 67 due to excessive rotation of display board 67
It is possible to prevent malfunctions between the cam 73 and the operator 86a (malfunctions due to a large pressure angle, malfunctions due to the cam and the operator not touching the specified positions), and to always keep the cam 73 and the operator 86a in the specified position. It can touch the position. In addition, since a stopper for the operator 86a is formed on the base 58 so that the feed wheel 69 rotates smoothly, the feed wheel 69 provided on the return spring
The locking and fitting state of the locking pawl shown in No. 9 and the feed wheel can be maintained constant, and the spring portion of the return spring acts to protect the locking pawl only when an overload is applied to the locking pawl. , damage to important quality parts of the counter mechanism can be prevented.

As described above, the electric shaver counter device of the present invention includes a display board having a usage count display board;
A feed wheel that rotates the display plate, a feed lever that has a claw portion that rotates the feed wheel by a predetermined angle each time the electric shaver is used, and a return spring portion that is integrally formed with the feed wheel; and a feed lever that is elastically locked to the feed wheel. a locking means having a locking pawl to restrict reverse rotation of the feed wheel; and a locking means provided integrally with the locking means and rotating the cam by moving linearly in contact with a cam formed on the display plate. a return means that has an operator for returning the display plate to zero when the operator returns the display plate to zero, and integrally includes a spring that serves both to return the operator and to press the locking pawl against the feed pawl; Since the device is provided with an auxiliary return means that rotates the display plate at the initial stage of return, it becomes clear how many times the storage battery has been used since it was charged and the dry cell was replaced, and the next charging or replacement time is indicated. In addition to checking the return function on the display, you can set the approximate number of uses based on the battery capacity according to each user's usage, such as the thickness of the beard and how you use it (because the power consumption per use varies). can. Moreover, the display board can be easily returned to its original position using the operator of the return means. Furthermore, it has the following effects. That is, since the return means includes a cam portion formed on the display board and an operator that contacts the cam portion and rotates the cam portion to return, the cam mechanism allows the return operation to be performed reliably without failure.

Since the locking means and the operator are integrally formed and the operations of the locking means and the operator are linked, the number of parts can be reduced and a compact counter mechanism can be achieved. In addition, by integrating the function to return the display board that displays the number of uses and the latch claw function of the feed wheel necessary to return the display board, the release of the feed wheel and the rotating operation of the display board are continuous. The display board can be easily returned to its original position.

Since the display board and the operator are provided with auxiliary return means to assist the rotation of the display board at the initial stage of return,
The operating force for the return button can be reduced, and the operating force for the return button can be reduced compared to operation using only the cam portion.

Since the spring part of the return spring for returning the return button and the locking claw for locking the feed wheel are integrally formed, the release of the locking claw of the feed wheel and the operation of the return button are continuous. The counter can be reset with a simple operation.

Since the spring and the locking means are integrally formed on the operator, the release of the feed wheel and the rotation of the display plate can be easily and continuously performed by pressing the return button. In addition, when one end of the spring is fixed to the base, it has a function of locking the display board when integrating the counter block with the counter base, so that the counter can be easily made into a block.

The feed lever has a claw part that sends the feed wheel and a spring part that returns the lever, which are integrally formed, so the balance between the elastic force of the claw part that feeds the feed car and the elastic force that allows it to return automatically is maintained. It can be managed as a component and quality can be stabilized. Note that if the lever shaft portion has a structure that allows it to be fitted and locked onto the shaft of the base, it can be made into a block as a counter block when fitted.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an electric shaver to which an embodiment of the present invention is applied, FIG. 2 is an exploded perspective view of a counter device, FIG. 3 is a cutaway plan view of the assembled state, and FIG.
This figure and FIG. 5 are cutaway plan views showing the return operation. 58...Base, 67...Display board, 69...Feed wheel, 70...Feed lever, 73...Cam, 81...
...Lever part, 82...Spring part, 83...Claw part, 8
6... Returning means, 86a... Operator, 87... Spring, 96... Locking means, 96'... Locking claw, 98
...Auxiliary return means.

Claims (1)

[Claims] 1. A display board having a usage count display part, a feed wheel for rotating this display board, and a feed lever having a claw part and a spring part integrally formed to rotate the feed wheel by a predetermined angle each time the electric shaver is used. ,
a locking means having a locking pawl that elastically locks on the feed wheel to restrict the reverse rotation of the feed wheel; and a locking means that is integrally provided with the locking means and moves linearly by coming into contact with a cam formed on the display board. a return means having an operator for returning the display plate to zero by rotating the cam, and integrally having a spring that serves both to return the operator and to apply elastic pressure of the locking pawl to the feeding pawl;
A counter device for an electric shaver, comprising the display plate and an auxiliary return means provided on the operator to rotate the display plate at an initial stage of return.