JPS6116469B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electric shaver, and more particularly to an electric shaver equipped with a sharpening unit.

In conventional electric shavers of this type, it is common to operate a lever or the like to selectively slide the trimming unit into an operating position or a storage position. As a result, the sharpening unit becomes large, and the space within the case for sliding it also becomes large, resulting in the disadvantage that the amount of protrusion of the cutting edge from the case cannot be increased very much.

In addition, the sharpening unit is rotatably supported with the longitudinal side as a fulcrum, and a handle is provided adjacent to the cutting edge of the handle, which can be operated directly by hand to move the sharpening unit to the operating position or storage position. A device that rotates has also been proposed.
(See Publication No. 13140). According to this, the space required inside the case to provide the sharpening unit is small, and the amount of protrusion of the cutting edge from the case can be set large regardless of the space inside the case. Not only is it dangerous to touch the tip of the blade when operating it, but there is also the risk of hair getting on your hands and the tip of the blade rusting.Furthermore, the space for installing the handle is small and the handle cannot be made large, so it is difficult to hold your fingers. It had the disadvantage that it was difficult to apply force and difficult to operate.

The present invention supports the edge sliding unit so as to be rotatable about its longitudinal side as a fulcrum, and elastically biases the edge sliding unit in a predetermined direction through the point of action for rotating the edge sliding unit. An elastic biasing means consisting of an elastic arm or the like is provided, and the elastic biasing means and the diversion unit are engaged by a notch and a pawl that abuts the notch, and the point of action is moved up and down with respect to the fulcrum. This is a device in which an operating member for holding the edge sliding unit in either the storage position or the operating position is slidably provided in the case. To provide an electric shaver that requires less space, can set a large amount of protrusion of a cutting edge from a case, and is easy to operate.

Hereinafter, one embodiment of the present invention will be described with reference to FIGS. 1 to 3. An electric shaver 1 includes a rotary shaving head 2 at its upper left end, and a sharp shaving unit 3 slightly above the center on the right side. The edge cutting unit 3 is connected to the edge cutting blade support 4.
The fixed blade 5 is glued inside, and this fixed blade 5
The movable blade 7 with which the drive lever 8 is integrally formed is pressed by a compression spring 6, and a fulcrum pin 9 protruding from the outer side wall of the edge cutting blade support 4 is connected to the opening of the case 10. It is rotatably supported by fitting into a fulcrum hole (not shown) drilled in the periphery of the portion 11. Further, the operation knob 13 that is slidably fitted into the fitting hole 12 of the case 10 is
It is made of a molded product of synthetic resin such as polyacetal, and has claws 1 with rounded tips on both upper ends.
5 are integrally formed, and the claws 15 of the elastic arms 14 are inserted into arc-shaped notches 16 bored in the rear portions of both side walls of the sharpening blade support 4. They are abutted and engaged so as to be elastically pressed. In the figure, 17 is a drive motor, 18 is an eccentric cam, and 19 is a storage battery.

In the electric shaver configured in this manner, when the operation knob 13 is in the downwardly pressed position as shown in FIG. The rear part of the edge cutting blade support 4 is pressed by the elastic force of the elastic arm 14, and the upper surface of the edge cutting unit 3 is placed above the opening 11 of the case 10. By pressing against the edge, the sharpening unit 3 is firmly held in the operating position where the cutting edge protrudes from the case 10 without wobbling. At this time, the drive lever 8 of the movable blade 7 is in a position where it engages with the eccentric cam 18. Therefore, by driving the motor 17, the movable blade 7 can be reciprocated to perform a sharpening action.

Now, if you push up the operation knob 13,
As shown in FIG. 2, the claw portion 15 of the elastic arm portion 14 integrally formed therewith pushes up the rear part of the edge cutting blade support 4 while relatively sliding within the notch 16, so that the edge cutting unit 3 rotates clockwise about the fulcrum pin 9 and is housed in the case 10. In this storage position, the claw part 15 is above the fulcrum pin 9 and presses the rear part of the sharpening blade support 4 by the elastic force of the elastic arm part 14.
The cutting edge of the cutting unit 3 has a case 10.
It is pressed against the lower edge of the opening 11 and is held firmly without wobbling. At this time, the engagement between the drive lever 8 of the movable blade 7 and the eccentric cam 18 is released. Further, when the operating knob 13 is pushed down, the edge unit 3 is rotated counterclockwise in the opposite direction to the pushing up operation, and is again held at the operating position shown in FIG. 1.

FIG. 4 shows another embodiment, in which two notches 16', 16'' are provided at the rear of both side walls of the edge cutting blade support 4, sandwiching the fulcrum pin 9. After the sharpening unit 3 has fully rotated to the operating position or storage position, the claw portion 15 that was engaged with one notch is moved over the mountain between the notches 16' and 16'' and engaged with the other notch. By doing so, it is possible to give moderation to the operation, and also to increase the distance in the vertical direction between the rotation fulcrum and each elastic pressing point, thereby strengthening the holding force of the edge sliding unit 3 in both the above-mentioned positions. I can do it.

As explained above, according to the present invention, the edge sliding unit is rotatably supported, and the operating member provided in the case is slid to rotate it to the operating position or the storage position. Not only does it require less space in the case to provide the cutting edge, but it also allows the cutting edge of the sharpening unit to protrude significantly just by slightly sliding the operating member, and eliminates the risk of hands touching the cutting edge during operation. There are no errors and it is extremely easy to operate. In addition, since the point of action that moves up and down the rotational fulcrum as the operating member slides elastically presses the sag unit, it can be held firmly in its operating position or storage position without wobbling. In particular, it is possible to significantly reduce the harsh abnormal noise caused by rattling during jerky operation.

Furthermore, since the elastic biasing means such as the elastic arm portion and the shifting unit are engaged simply by the claw portion and the notch, the engagement structure is simple and the shifting unit can be easily shifted while maintaining good sliding properties. The unit can be elastically biased, contributing to improved operability. Furthermore, since the sharpening unit and the elastic biasing means are engaged with each other by mere contact,
Just by sequentially assembling the sharpening unit and the elastic biasing means into the case, the sharpening unit and the elastic biasing means are engaged with each other, and the electric shaver is easily assembled.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway side view of an electric shaver showing an embodiment of the present invention, and FIG. 2 is a vertical sectional side view of the same main part.
FIG. 3 is an exploded perspective view of the sharpening unit and operation knob in the electric shaver shown in FIGS. 1 and 2, and FIG. 4 is a longitudinal sectional side view of the main parts of the electric shaver showing another embodiment of the present invention. be. 3... edge unit, 4... edge edge support, 5... fixed blade, 7... movable blade, 8... drive lever, 9... fulcrum pin, 13... operation knob,
14...Elastic arm part, 15...Claw part, 16,1
6', 16''...Notch, 18...Eccentric cam.

Claims (1)

[Claims] 1 The edge sliding unit is rotatably supported using its longitudinal side as a fulcrum, and elasticity is used to elastically bias the edge sliding unit in a predetermined direction through the point of action for rotating the edge sliding unit. A biasing means is provided, and the elastic biasing means and the shifting unit are engaged by a notch and a claw portion that abuts the notch, and the point of action is moved up and down with respect to the fulcrum to move the shifting unit to the storage position. and an electric shaver, characterized in that an operating member that is held in one of the operating positions is slidably provided in the case.