JPS5951309B2 - rotary electric razor - Google Patents

Description

[Detailed description of the invention] The present invention relates to a rotary electric razor.

In conventional rotary electric razors, a donut-shaped outer cutter is arranged to surround a dome-shaped inner outer cutter, and the inner outer cutter and the outer cutter are arranged so as to be movable relative to each other in the axial direction. In addition, it has been proposed that an inner inner cutter, an outer inner cutter, and an outer inner cutter are pressed against an inner outer cutter and an outer outer cutter, respectively, and are slidably rotated on the inner surfaces of the inner outer cutter and the outer outer cutter. There is.

However, in the conventional configuration, the mechanism for relatively moving the inner and outer cutters is complicated, making assembly difficult and increasing costs. It was complicated to engage and disengage from the mechanism, and it was not easy to use.

SUMMARY OF THE INVENTION An object of the present invention is to eliminate the above-mentioned drawbacks, provide a rotary electric razor that is simple in construction, can be made at low cost, and is easy to use.

The present invention will be explained below along with the drawings.

In FIGS. 1 to 8, reference numeral 1 denotes a cylindrical housing, on the upper surface of which a blade mount 2 is fixed with screws 3, and a motor 4 is fixed to the blade mount 2. As shown in FIGS.

A drive shaft 5 of the motor 4 passes through the blade mount 2 and extends upward, and a first joint body 6 is press-fitted and fixed therein.

A joint pin 7 is press-fitted in the first joint body 6 in the horizontal direction, and the joint pin 7 is fixed in the axial direction of the second joint body 8 which is slidably covered with respect to the first joint body 6. It is engaged in a sliding slit 9 that extends to.

A float spring 10 is disposed between the upper surface of the first joint body 6 and the inner upper surface of the second joint body 8.
A saw blade-shaped clutch portion 11 is provided on the peripheral edge of the bottom body.

Reference numeral 12 denotes an inner cutter frame in which the first joint body 6 and the second joint body 8 can be housed, and the clutch portion 11 of the second joint body 8
A latch portion 13 is formed on the inner peripheral edge of the bottom so as to be able to engage with the latch portion 13.

On the other hand, an outer cutter frame 14 is rotatably covered on the peripheral wall of the blade mount 2, and a step-shaped recess 15 is provided in the peripheral wall of the blade mount 2 when viewed from the side. , outer cutter frame] 4 is provided with an engaging protrusion 16 that is movable and engages with the four parts 15, and when the outer cutter frame 14 is rotated relative to the blade mounting base 2, the outer cutter frame 14 are installed at several heights.

Further, the recess 15 includes a deep recess 15a and a shallow recess 15b, and is provided so as to give a click motion when the engaging protrusion 16 moves.

The lower edge of the outer circumferential wall portion of the donut-shaped outer circumferential outer cutter 17 is fixed to the upper edge of the outer cutter frame 14 .

The outer cutter 17 has a large number of long whisker introduction holes extending in the radial direction, and a guide frame 18 having guide holes extending in the axial direction is fixed to the inner peripheral wall.

Reference numeral 19 denotes a dome-shaped inner circumferential outer cutter surrounded by the outer circumferential outer cutter 17, which is provided with a number of miscellaneous introduction holes, and a reinforcing frame 20 is fixed to the lower edge of the outer circumferential wall. 20 protrusions are engaged in the guide holes of the guide frame 18.

A mounting plate 21 is fixed to the center of the dome-shaped inner peripheral outer cutter 19, and the shaft portion 22 of the mounting plate 21 is inserted into the upper part of the inner cutter frame 12, and the inner cutter frame 12 is inserted into the inner cutter frame 12.
is rotatably supported.

Reference numeral 23 denotes an outer circumferential inner cutter formed of a single plate, which is supported on the inner cutter frame 12 so as to be movable up and down in the axial direction and to be rotatable. A guide protrusion 24a protruding from the blade part 24 is provided on the inner surface so as to be able to abut and slide against the guide frame 18, and is prevented from being pulled out by a first stop ring 25 fixed to the inner blade frame 12. The first pressing spring 26 disposed between the stepped portion of the blade frame 12 and the outer peripheral inner cutter 23 causes the blade portion 2 to
4 is brought into elastic contact with the inner surface of the outer peripheral outer cutter 17.

In this case, the contact portion of the outer circumferential inner cutter 23 with the inner cutter frame 12 is bent at the bent portion 2 so as to fit smoothly with the inner cutter frame 12.
7 is provided.

Furthermore, an inner circumferential inner cutter 28 formed of a single plate is supported on the upper part of the inner cutter frame 12 so as to be movable up and down in the axial direction and movable in the ear. A second stop ring 29 fixed to the upper end prevents the removal, and a second pressing spring 30 disposed between the step of the inner cutter frame 12 and the inner inner cutter 28 prevents the inner cutter 31 from being pulled out. It is in elastic contact with the inner surface of the peripheral outer cutter 19.

In this case as well, the contact portion of the inner circumference inner cutter 28 with the inner cutter frame 12 is bent at the bent portion 3 so as to smoothly engage with the inner cutter frame 12.
2 is provided.

33 is guided by a horizontal guide protrusion 35 in a recess 34 extending throughout the axial direction of the inner cutter frame 12.
It is a flexible linking arm that moves up and down, and is locked to the shaft portion 22 of the mounting plate 21 at its upper end.

Further, the operation of the present invention will be explained in detail.

When the motor 4 is now rotated, the first joint body 6 and the second joint body 8 are rotated via the drive shaft 5, and together with this, the outer circumferential inner cutter 23 and the inner circumferential inner cutter 28 are aligned with the outer circumferential outer cutter. 17 on the inner surface of the inner outer cutter 19.

In this case, the dome-shaped inner peripheral outer cutter 19 has a reinforcing frame 20 that supports it inserted into a guide hole of a guide frame 18 fixed to the donut-shaped outer peripheral outer cutter 17. On the other hand, it is fixed in the rotational direction, but on the other hand, it is movable in the axial direction.

Therefore, when your skin comes into contact with the upper surface of the inner outer cutter 19 as shown in FIG. 9, the inner outer cutter 19, the mounting plate 21, and the second joint body 8 will sink against the spring force of the float spring 10. Therefore, relatively long hair can be cut by the long hair introduction hole of the outer peripheral outer cutter 17, and a finishing shave can be smoothly achieved by the miscellaneous hair introduction hole of the inner peripheral outer blade 19.

Further, as shown in FIG. 10, when the outer cutter frame 14 is appropriately rotated with respect to the blade mount 2 and the engaging protrusion 16 is moved upward along the recess 15, the outer and inner peripheral outer cutters 17, 19, The outer and inner inner cutters 23 and 28, the linking arm 33, the second and first joint bodies 8 and 6, and the inner cutter frame 12 move upward.

As the outer and inner outer cutters 17 and 19 move upward, the amount of skin thrust into the outer and inner outer cutters 17 and 19 increases, increasing the contact with the skin, so it is possible to quickly respond to the user's preference. can.

In addition, when removing the outer and inner outer cutters 17 and 19 from the housing 1, the outer and inner inner cutters 23 are removed via the linking arm 33.
．． 28, etc. can be removed, and by pressing the lower end of the ear distance engaging arm 33 radially inward, the outer and inner outer cutters can be separated from the outer and inner inner cutters, etc.

According to the rotary electric razor of the present invention configured as described above, even if the rotating electric razor has a dome-shaped inner circumference outer cutter surrounded by a donut-shaped outer circumference outer cutter and is relatively movable in the ear axis direction. , it achieves remarkable effects such as being able to simplify the process to a large extent, reduce the cost, and improve versatility.

[Brief explanation of drawings]

Fig. 1 is a partial sectional view of the rotary electric razor of the present invention, Fig. 2 is an exploded perspective view of the same part, Figs. 3 and 4 are perspective views of the same part, Fig. 5 is a side view of the same part, and Fig. 6 The figure is a partial sectional view, FIGS. 7 and 8 are side views of the same part, and FIGS. 9 and 10 are explanatory diagrams of the same operation. 1... Housing, 2... Number of blades, 3... Screws, 4... Motor, 5...
...Drive shaft, 6...First joint body, 7...
...Joint pin, 8...Second joint body, 9...
...Sliding slit, 10...Float spring,
11...Clutch part, 12...Inner blade frame, 13...Clutch part, 14...
・Outer blade frame, 15... recess, 16...
...Entering protrusion, 17...Outer peripheral outer cutter, 18...
... Guide frame, 19 ... Inner circumference outer cutter, 2
0... Reinforcement frame, 21... Mounting plate, 22... Shaft portion, 23... Outer periphery inner cutter,
24...Interior, 25...First stop ring, 26...First pressure spring, 27...
...Folding attachment b, 28...Inner periphery inner blade, 29.
...Second stop ring, 30...Second
Pressing spring, 31...Blade portion, 32...Bending portion, 33...Linking arm, 34...
...Recess, 35...Horizontal guide protrusion.

Claims (1)

[Claims] 1 An outer outer cutter and an inner outer cutter surrounded by the outer outer cutter are disposed concentrically, and the inner outer cutter is prevented from moving in the rotational direction with respect to the outer outer cutter, and can move in the axial direction of the ear. established in
The blade portions of the outer and inner inner cutters, each formed of a single plate, are arranged so as to be slidable and rotatable on the inner surfaces of the outer and inner outer cutters, and the outer and inner inner cutters receive the output of the motor. In an electric razor that is movable in the axial direction relative to the inner cutter frame, a first joint body is provided on the drive shaft of the motor, and a second joint body rotates with respect to the first joint body. The second joint body is connected to an inner cutter frame pivotally supported on a shaft portion of a mounting plate fixed to the inner peripheral outer cutter, and the second joint body is linked to an inner cutter frame pivoted to a shaft portion of a mounting plate fixed to the inner peripheral outer cutter, and An outer cutter frame that abuts the shaft of the plate, a push-up spring is interposed between the first and second joint bodies, and holds the outer cutter on the outer periphery is axially moved relative to the cutter mount fixed to the housing. 1. A rotary electric razor, characterized in that the inner cutter frame is movably provided, and a linking arm that is removable from the shaft of the mounting plate is held by the inner cutter frame.