JPH04114690A - Rotary electric shaver - Google Patents

Abstract

PURPOSE:To easily shave mustaches under nose and lessen the body space and further, shave long beads and curled beards, by cutting off a part of outer blade forming a circle in the profile to be nearly a straight line and forming the profile to be nearly D-shaped form. CONSTITUTION:The outer blade 10 is formed to be nearly dome in the section and partly cut off to be a rough D-shape as shown in the outer profile 14. Further, the outer blade 10 is fixed at the outer blade frame 11 which is fastened at the case 12. And the inner blade 4 is pressed by a raising spring 5, while being retained by an inner blade support 3, against the inside face of the outer blade 10. The inner blade support 3 is arranged to be rotatable through a joint 6 from a motor 7. The motion on using the razor rotates the motor 7 and the joint 6. The inner blade support 3 and the inner blade 4 are rotated according to the rotation of the motor and joint. In this time, beards are conducted in the outer blade 1 and the beards are cut off in cooperation with the inner blade 4.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an outer blade of a rotary electric razor.

[Prior Art] The outer blade of a conventional rotary electric razor has a dome-like outer shape and a circular outer shape, as shown in FIG.

[Problem to be solved by the invention] However, in the blade of the above-mentioned rotary electric razor,
As shown in FIG. 1, the beard scraps cut by the cooperation of the outer cutter 1 and the inner cutter body 4 pass through the gap B1 and pass through the beard debris pool 9.
Therefore, a gap B is required all around the circumference. Also, the outer blade 1 is
It is fixed to the outer cutter frame 2, and the outer cutter frame 2 is further stopped by screwing or the like to the case 8, and the dimension A is determined by adding the thickness of each member and the above-mentioned gap B. However, when trimming the beard under the nose, the A5 size part affects it, making it difficult to trim. Furthermore, rotary electric razors for boat fishing have difficulty dealing with long beards and curly beards due to the shape of the outer blade.

The purpose of this invention is to make it easier to shave under the nose, reduce the space on the main body, and reduce the need for longer beards and curly hair. A rotary electric razor capable of cutting beards is provided.

[Means for Solving the Problems] The outer blade of the rotary electric razor of the present invention has an outer blade having a large number of hair introduction holes, and an inner blade that cuts hair in cooperation with the outer blade. The razor is characterized in that a part of the outer blade is cut out in a substantially straight line, and the outer shape is formed into a substantially oval shape.

[Embodiment j] Fig. 2 is a sectional view of the blade in the present invention, and Fig. 3 is a front view of the blade.

First, the outer cutter 10 has a substantially dome-like cross-sectional shape, but as shown in FIG. 3, the outer cutter 10 is partially cut out and formed into an abbreviated shape, as shown in the outer cutter outer shape 14. Further, the outer cutter 10 is fixed to an outer cutter frame 11, and the outer cutter frame 11 is stopped by a case 12. An inner cutter body 4 is stopped by an inner cutter support 3 and pressed against the inner surface of the outer cutter 10 by a push-up spring 5. The inner cutter support 3 is rotatably arranged by a motor 7 via a joint 6. The motor 7 is fixed to the case 12 with screws or the like.

During shaving, the motor 7 is rotated and the joint 6 is rotated. Accompanying this, the inner cutter support 3 and the inner cutter body 4 rotate. At this time, the outer cutter 1 introduces the beard, which is cut by cooperation with the inner cutter 4.

Next, the purpose of the present invention, which is to make it easier to shave under the nose, cut curly hair, and reduce the space of the main body, will be explained.6 In FIG. 3, the front outer peripheral shape 13 of the outer cutter frame 11 and
As shown in the front outer circumferential shape 14 of the outer cutter 10, a portion thereof has a straight cutout shape.

In this embodiment, the cutout shape is a straight line, but it is also possible to cut it out with a slight radius. By adopting the D shape and not changing the rotation range 16 of the inner cutter body 4, B2<Bl. Furthermore, by lowering the height of the outer cutter frame 2 at the notch portion, C2>C+. With such a shape, the tightness of the outer cutter frame 2 and A, which has traditionally been an obstacle when shaving under the nose, has been removed.

Furthermore, by forming the slit-like pattern 17 by taking advantage of the increased dimension of C2 in FIG. 4, it becomes easy to increase the effect of introducing curly hair.

In this embodiment, the C2 dimension portion is made of the material of the outer blade lO, but the purpose can also be achieved even if it is covered with a molding material.

Further, applied examples of the present invention will be described.

FIG. 5 is a sectional view of the blade in an applied embodiment of the present invention, and FIG.
The figure is also a plan view of the blade, and first, the outer cutter 101 has a dome-shaped cross section, and each dome part is connected at the center, so that the two dome parts are integrated. 6 Also, in FIG. 2, each dome portion is provided with a large number of whisker introduction holes, forming a net blade portion 108.
Therefore, the two dome parts are connected at the central part 102, forming a cocoon shape. Naturally, a rising portion 104 and a peripheral portion 105 are also formed around this outer cutter 101.
It is fixed to the outer cutter frame 106. As described above, in this embodiment, the outer cutter 101 has a diameter, a curvature, and a top portion 107.
The outer cutter 101 is an integrated outer cutter 101 having two dome-shaped net cutter portions 108 with the same height, and the center portion 102 is recessed from the top portion 107.

On the other hand, corresponding to each of the net blade portions 108, there are two inner blades 109.
Each inner cutter 109 holds several inner cutters 111 pushed up by a push-up spring 110 and an inner cutter body 111, and an inner cutter support 11 that engages with a rotating shaft 112.
It consists of 3. Further, a gear portion 114 is formed below the rotating shaft 112, and is configured to engage with a reduction gear 116 fixed to the motor shaft of a motor 115 to transmit rotation. Further, the gear portion 1]4 includes a bearing 117,
The fulcrum 118, the whisker debris receiver 119 and the motor mounting plate 12
It is designed to be positioned and held between 0 and 0.

Further, a long hole portion 121 is provided in the center portion 102 of the outer cutter 101 so as to extend over the dome portions on both sides, and this portion is recessed from the top portion 107, so that the outer cutter 101 does not touch the skin.
When you hit 1, you can introduce curly beards and long beards without crushing them.

If the blade part is configured as described above, for example, if the diameter of the net blade part 108 is about 20 to 25 mm, the blade part will be about 40 to 50 m long.
It can be configured to be wider than conventional rotary blades. Furthermore, since the outer diameter is smaller than that of conventional rotary blades, the thickness can be reduced to obtain the same rigidity. In addition, the diameter of each inner cutter 109 is smaller than that of a conventional rotary cutter, and the load when hairs are formed can be reduced.
If a reduction gear is used, the torque of the motor 115 can be relatively increased, and both effects can provide a powerful rotary blade.

Moreover, in the embodiment of the first application, the net blade part 10
8 has the same curvature, diameter, and height of the top portion 107, but as shown in the second application example shown in FIGS.
07 is formed planarly, and each net blade portion 108 is connected to the central portion 102.
It can also take the form of being connected. In short, inner blade 109
The cross-sectional shape of the net blade portion 108 can be made arbitrarily as long as it does not impede the rotation of the net blade portion 108. Further, as shown in FIG. 4, the net blade portions 108 may be arranged so as to be in contact with each other, or may be arranged apart from each other. Furthermore, the mesh blade portions 108 can be easily formed at three locations instead of two locations as in the third embodiment shown in FIGS. 9 and 10. The height of each inner cutter 109 can be changed by a, the center inner cutter is directly connected to the motor 115, and the others are connected by gears, and the rotation direction and rotation speed of each inner cutter 109 can be changed.
It is also easy to change the diameters of the central mesh blade portion 108 and the mesh blades 108 on both sides. Of course, the shape of the beard introduction hole of each net blade part 108 is changed, for example, the central net blade 108 is a blade with small holes for deep shaving, and the other blade is a blade with long holes suitable for curly beards and long beards. It can also be a blade provided.

[Effect of the Invention 1] As described above, according to the present invention, it is difficult to shave the beard under the nose and it is difficult to deal with curly beard, which are the drawbacks of the blade of the conventional rotary electric razor. can be solved.

[Brief explanation of drawings]

FIG. 1 is a sectional view of the blade of a conventional rotary electric razor. FIG. 2 is a sectional view of the blade according to the present invention, and FIG.
The figure is a schematic diagram of the front shape according to the present invention, and FIG.
FIG. 5 is an enlarged cross-sectional view of the outer blade according to the present invention, and FIG. 6 is a cross-sectional view of the blade in the first applied embodiment of the present invention.
Similarly, FIG. 7 is a plan view of the blade, FIG. 7 is a cross-sectional view of the blade in the second applied example, FIG. 8 is a plan view of the blade, and FIG. 9 is a blade in the third applied example of the present invention. Partial sectional view, 1st
Figure 0 is also a plan view of the blade. 101 ・ 107 ・ 109 ・ 111 ・ 112 ・ ・Outer blade, top portion, net blade portion, inner blade, inner blade body, rotating shaft and above Applicant Seiko Epson Co., Ltd. Agent Patent attorney Kizobe Suzuki (and 1 others) Name) Outer blade Inner blade support Inner blade Motor joint Motor case No.

Claims (1)

[Claims] In a rotary electric razor having an outer blade having a large number of hair introduction holes and an inner blade that cooperates with the outer blade to cut hair, a part of the outer blade having a circular outer shape is cut out with a substantially straight piece. ,
A rotary electric razor characterized by having an approximately D-shaped outer shape.