JPS5930112B2 - electric razor - Google Patents

Description

[Detailed Description of the Invention] The present invention provides a comb-type reciprocating electric shaver, more specifically,
This invention relates to an electric razor that uses a comb-like fixed blade and a reciprocating movable blade to shave armpit hair, eyebrows, and other facial hair.

With conventional electric razors of this type, when shaving facial hair, beards, eyebrows, armpit hair, etc., the blade cannot be adjusted to an angle that is easy to use. The body got in the way when aiming at private parts, making it difficult to use.

The present invention has been developed in view of the above points, and its main purpose is to position a blade mount having a fixed blade and a movable blade at an angle suitable for use with respect to a bundle tube that is held by hand. The head can be swung, making it easy to shave armpits, eyebrows, etc., and when swiveling, the angle can be set by clicking, and the maximum swing angle can be regulated by a regulating means. To provide an electric shaver with good operability.

The present invention will be described in detail below based on embodiments shown in the figures.

The comb type reciprocating electric shaver of the present invention includes an elongated bundle tube 1 that houses a motor 4 and a battery 9 inside, and an elongated case connected to one longitudinal end of the bundle tube 1. A blade mount 2 in which a fixed blade 32 and a movable blade 31 are provided, and a blade mount 2 provided at a connecting portion between the bundle tube 1 and the blade mount 2, are provided to control the rotation of the motor 4 in the bundle tube 1 by reciprocating the movable blade 31. and a drive means for converting into.

The bundle tube 1 includes a housing 11 made of an elongated cylindrical conductive material with both ends open, a motor mount 12 whose lower part is fitted into the upper opening of the housing 11, and a motor mount 12 which is installed in the center of the housing 11. It is composed of a cover 14, a battery cover 15 that closes the lower end opening of the housing 11, and a support stand 13 attached to the upper part of the motor mount 12. The motor 4 is installed in the lower part of the motor mount 12.
The batteries 9 are accommodated between the cover 14 and the battery cover 15, respectively.

The cathode of the battery 9 contacts the housing 11, which is a conductive material, through the contact fitting 42, and the motor mount 12 is connected to the housing 1.
It is electrically connected to a pair of motor mounting brackets 16 that also serve as terminal plates for mounting on the motor.

The anode of the battery 9 is connected to the motor 4 through an anode metal fitting 43 in contact with the anode surface 40 on the bottom of the morph 4, and connected to the bottom of the switch spring 17 via the cathode metal fitting 44 in contact with the cathode surface 41 on the top surface of the motor 4. It is connected to piece 45.

The switch spring 17 is attached to a switch base 19 which is disposed on the inner surface of the upper part of the motor mount 12 and connected to a switch handle 18 which is arranged on the outer surface of the upper part of the motor mount 12. When the upper piece 46 comes into contact with the upper end of one of the motor mounting brackets 16 during operation, the motor 4 is energized.

The motor mounting bracket 16 is fixed by locking a cut-and-raised protrusion 47 at its lower end into an engagement recess 48 on the inner surface of the housing 11.

When the battery 9 is reversely loaded, the cover 14 prevents the battery cover 15 from being attached to the housing 11, guides the motor mounting bracket 16, and prevents the battery 9 from being attached.
The housing 11 is insulated from the housing 11, and its upper surface receives a motor pressing spring 20 that is disposed between the motor 4 and the lower surface of the motor 4 and urges the motor 4 upward.

The contact fitting 42 is held by the battery cover 15.

A pair of opposing pieces 35, 35 are erected in the upper part of the motor mounting base 12, the lower ends of which are in contact with the upper surface of the morph 4 via the cathode metal fitting 44, and these two opposing pieces 35, 35 constitute a gear box. There is.

That is, an eccentric cam 5 with a face gear 36 integrally formed thereon is attached to the rotating shaft 7 whose both ends are supported by both opposing pieces 35, 35, and a drive gear 50 press-fitted into the output shaft 49 of the motor 4. meshes with the face gear 36 so that the motor 4 drives the eccentric cam 5 to rotate around the rotating shaft 7.The lower end of the eccentric cam 5 is loosely fitted into the eccentric cam 5, and The drive rod 6 whose upper end is supported for axial sliding inside the blade mount 2 constitutes a drive means that converts the rotational motion of the slider crank mechanism into reciprocating motion. ○13 in the figure A hook portion 51 that is a cylindrical support that fits on each outer surface of a pair of opposing pieces 35 and 35 that constitute this gear box, and that can extend downward.
A pair of rocking rotary shafts 8 are integrally formed on the outer surface of the support base 13, which is attached to the motor mounting base 12, to protrude, and these rocking rotary shafts 8 are connected to the support base 1 as shown in FIG.
3 is mounted on the motor mount 12, it is positioned on the same axis of the rotating shaft 7 that supports the eccentric cam 5 and the face gear 36.

In addition, a plate-shaped click spring 30 with a protrusion 52 projecting upward in the center is attached to one side of the support base 13. The blade mounting base 2 has a flat tip and a bulging rear end. The blade block 3 is attached to the flat part 21 at the tip, and the bulging part 22 at the rear end is connected to the handle tube 1.

The bulging portion 22, which is open and hollow at the bottom, has a pair of shaft holes 23, 23 formed therein, and by fitting the swinging rotation shaft 8 into the shaft holes 23, a blade mount is attached to the handle tube 1. 2 are connected to each other, and the blade mount 2 is swingable around the axis of this swinging rotation shaft 8, but the connection between the two is the blade mount 2 made of synthetic resin. The elasticity of the bulging portion 22 of the swinging rotating shaft 8 is used, and the swinging rotating shaft 8 is guided by the inclined surface 38 on the upper end surface of the swinging rotating shaft 8 and the inclined surface 39 provided on the inner surface of the lower end of the blade mount 2.
In addition to being integral with the support base 13, this makes it easy to connect the two.

The first driving rod 6 passes through the bulging portion 22 of the blade mount 2 and has its upper end located on the flat portion 21.

29 is a dustproof material, and 10 in FIG. 1 is a cover.

The blade block 3 includes a base 33, a movable blade 31, and a push-up spring 3.
4 is attached to the flat part 21 of the blade mount 2.
It can be attached to the blade mount 2 by locking the upper and lower ends of the base 33 to the blade mount 2.

A detachable button 27 that engages with the lower end of the base 33 is attached to the lower end of the flat part 21 of the blade mount 2 so as to be able to slide up and down. The structure is such that the blade flock 3 can be removed from the blade mount 2 by disengaging the blade block 3 from the blade mount 2, and when the blade block 3 is attached to the blade mount 2, the upper end of the drive rod 6 is connected to the blade 31.
connected to.

The movable blade 31 whose sliding direction is regulated by the base 33 is reciprocated by the drive rod 6.

The fixed blade 32 and the movable blade 31 are of a comb type having blades on their side edges, and these comb-like blades are positioned on both sides of the blade mount 2 in the longitudinal direction, respectively.

As described above, the blade mount 2 with such a blade block 3 attached thereto can be oscillated by fitting the oscillating rotation shaft 8 provided on the support base 13 of the handle cylinder 1 into the shaft hole 23 of the bulged portion 22. However, there is a V-shaped step on the lower outer surface of the bulge 22 below one of the shaft holes 23 and 23 to which the decorative pin 28 is attached from the outside. A stopper 24 with an attachment is formed, and a click engagement part 25 having a recess 26 at the tip is integrally hung below the other shaft hole 23, and the handle tube 1 and the blade mount 2 are connected to each other. If they are aligned in a straight line, the recess 26 of the click engaging portion 25 will engage with the protrusion 52 of the click spring 30, and this state will be maintained.

When the blade mount 2 is swung in either direction, the stopper 24 comes into contact with one end face of the motor mount 12, thereby preventing the blade mount 2 from swinging beyond a predetermined angle. It is something.

Note that the click spring 30 is attached to the support base 13 as shown in FIG.
By fitting it into a recess 53 whose central upper surface is open, it is integrated so that it is equivalent to an integral piece, but as shown in FIG. The click spring 30 may be used, or the click spring 30 may be provided integrally or integrally with the blade mount 2.

54 in FIG. 7 is a plate spring for reinforcement.

In any case, the click engagement portion 25 of the blade mount 2 can be adjusted to any value within the range regulated by the stopper 24, regardless of the angle of the blade mount 2 with respect to the handle tube 1. The blade mount 2 is held against the handle tube 1 with an appropriate load by springing the blade.

On the other hand, as mentioned above, the rotational output of the motor 4 is
0 and the eccentric cam 5 is connected to the motor 4 via the face gear 36.
The output shaft 49 is rotated around a rotating shaft 7 disposed perpendicular to the output shaft 49 of the motor.

The rotation of the eccentric cam 5 is converted into reciprocating motion by the drive rod 6, causing the movable blade 31 to reciprocate.

This operation is possible because the rotation axis 7 and the swing rotation axis 8 are on the same axis, so even if the blade mount 2 is oscillated, the relative position between the blade mount 2 and the drive rod 6 does not change. It is the same and can maintain stable performance.

As described above, in the present invention, the blade mounting base can be tilted at an angle suitable for shaving glandular hair or pigmenting eyebrows, etc., making it easy to use. The regulating means for regulating the angle makes it easy to adjust the angle of the blade mount when swinging, and even in this respect, the operability is good.

[Brief explanation of drawings]

Fig. 1 is a perspective view of an embodiment of the present invention, Fig. 2 is an exploded perspective view of the same, Fig. 3 is a partial front view of the same, Fig. 4 is a partial vertical sectional view of the same, and Fig. 5 is a partial longitudinal sectional view of the same. FIG. 6 is a partially enlarged cross-sectional view of the same as above, and FIG. 7 is a partially enlarged cross-sectional view of another embodiment, in which 1 is a handle tube, 2 is a blade mount, and 3
4 is a blade block, 4 is a motor, 8 is a rotating shaft for swinging, 9 is a battery, 24 is a stopper, 25 is a click engaging portion, and 30 is a click spring.

Claims (1)

[Scope of Claims] 1. An elongated bundle tube that houses a motor and a battery therein, and a blade mount connected to one longitudinal end of the bundle tube and equipped with a blade block including a fixed blade and a movable blade. , a driving means provided at the connection between the bundle tube and the blade mount to convert the rotation of the motor in the bundle tube into reciprocating motion of the movable blade; This electric shaver is capable of swinging freely relative to the bundle tube around a swinging rotation axis, and the bundle tube and the blade mount have click means for adjusting the oscillation angle of the blade mount and a maximum oscillation angle. An electric shaver comprising a regulating means for regulating. 2. The blade mount is provided with blade parts of the blade tank on both sides in the longitudinal direction, and one end of the bundle tube serves as a regulating means for regulating the maximum swing angle by contacting the end surface of the bundle tube. The electric shaver according to claim 1, characterized in that it has a V-shaped stopper. 3. The electric shaver according to claim 1, wherein means for regulating the maximum swing angle is provided on the front side of the bundle tube and the blade mount, and click means is provided on the back side. 4. A patent characterized in that a click spring is provided on one of the bundle tube and the blade mount, and a click retaining portion that engages with the click spring is provided on the other to form a click means. An electric shaver according to claim 1.