JPS6041954B2 - rotary electric razor - Google Patents

Description

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

Conventionally, in this type of rotary electric razor, as shown in FIG. 5, an inner cutter 12' is connected to a joint body 7' to which the force of a push-up spring 8' is applied, which is connected to a drive shaft 4'. On the inner surface of the outer cutter 13', which is provided to be movable in the axial direction with respect to the main outer cutter frame 19', the inner cutter 12' is provided in elastic contact with the push-up spring 8' and slidably rotated. It is being

However, with this configuration, when the skin is pressed against the outer cutter 13', only the spring force of the push-up spring 8' resists the pressing force, so the outer cutter 13' sinks too much, making it difficult to perform a smooth shaving operation. I couldn't guarantee it. On the other hand, if the spring force of the push-up spring 8' was increased, the inner cutter 12' would be pressed too firmly against the outer cutter 13', and smooth sliding rotation could not be achieved. SUMMARY OF THE INVENTION It is an object of the present invention to provide a rotary electric razor which eliminates the above-mentioned drawbacks and can realize a smooth shaving operation by applying a suitable supporting force to the outer blade other than the push-up spring. The present invention will be explained below with reference to the drawings.

In FIGS. 1 and 2, reference numeral 1 denotes a body in which a motor 2 is housed, and a drive shaft 4 extends upward from the motor 2 through an intermediate partition plate 3. As shown in FIG.

A connecting body 5 is fixed to the drive shaft 4, and a joint body 7 is connected to the connecting body 5 via an ear piece 6. A push-up spring 8 whose one end is locked to the connection body 5 is housed inside the joint body 7, and the joint body 7 is always provided with a push-up blade. Further, an engaging recess 9 that opens upward is formed in the upper part of the joint body 7, and the bottom surface of the engaging recess 9 is formed with a spherical concave surface. Reference numeral 10 denotes a disk-shaped inner cutter base, and a spherical protrusion 11 that matches the bottom surface of the engagement recess 9, which is a spherical concave surface, projects downward from the lower surface of the center.

In this case, for example, an engagement groove (not shown) extending in the axial direction is formed in the engagement recess 9, and the spherical protrusion 11 is slidably engaged in the engagement groove in the axial direction. A connecting pin (not shown) is provided in a protruding manner to allow the inner cutter base 10 to move in the axial direction with respect to the joint body, while being connected in the rotational direction. The inner cutter base 10 has a plurality of inner cutters 1.
2 and 12 are supported and pressed against the inner surface of the outer cutter 13. The center part of the outer cutter 13 itself is fixed to a disk part 15 of the outer cutter stator 14 which also functions as a display part, and the pivot pin 16 of the outer cutter stator 14 is fixed to the inner cutter base 11. It is engaged in a receiving hole 17 that opens on the upper surface of the center portion. The outer circumference of the outer cutter 13 is held by a ring-shaped auxiliary outer cutter frame 18, and the auxiliary outer cutter frame 18 is axially oriented on its inner surface with respect to the main outer cutter frame 19 attached to the upper end of the body 1. It is slidably installed. Reference numeral 20 denotes a push-up body of the outer cutter 13, which has a thin frame-shaped main part 21 that is substantially triangular and has each corner curved outward. An arm part 23 having an enlarged part 22 at its tip extends radially outward from the arm part 23, and is perpendicular to the arm part 23, corresponding to the position where the arm part 23 is extended on the opposite side of the arm part 23. A supporting ear piece 24 is extended thereto.

In the push-up body 20, at least the arm portion 23 has sufficient springiness, and the support tab 24 thereof is in contact with the upper surface of another partition plate disposed above the intermediate partition plate 3, On the other hand, the enlarged portion 22 of the arm portion 23 is connected to the auxiliary outer cutter frame 1.
8 is brought into contact with the lower edge. Further, as shown in FIG. 3, the push-up body 20 is punched and formed with the supporting tabs 24 extending in the opposite direction of the arm portion 23, and after the punching and forming, the supporting tabs 24
You can also bend it downward. Further, the operation of the present invention will be explained in detail.

When the motor 2 is now driven, the drive shaft 4 is rotated, the inner cutter base 10 is rotated in conjunction with the coupling body 5 and the joint body 7, and the inner cutters 12, 12 are slidably rotated on the inner surface of the outer cutter 13. Therefore, shaving can be performed by applying the skin to the outer cutter 13, and if the pressing force against the outer cutter 13 is large, the outer cutter 13 held by the auxiliary outer cutter frame 18 will move in the axial direction and sink. It's crowded.

In this case, as shown in FIG. 4, the lower edge of the auxiliary outer cutter frame 18 is in contact with the enlarged part 22 of the push-up body 20, which extends from the arm portion 23 having a spring force larger than the spring force of the push-up spring 8. Since the outer cutter 13 is pushed in against the spring force of the arm portion 23, the outer cutter 13 does not sink down significantly. Further, the push-up spring 8 can substantially contribute only to bringing the inner cutter 12 into elastic contact with the outer cutter 13. According to the rotary electric razor of the present invention configured as described above, since the outer blade can be elastically held without relying on the push-up spring that pushes up the inner blade, a suitable shaving operation can be guaranteed, and the usability is greatly improved. Achieve effects such as increasing width.

[Brief explanation of drawings]

Fig. 1 is a partially simplified sectional view of the rotary electric razor of the present invention, Figs. 2 and 3 are enlarged perspective views of the same part, Fig. 4 is an explanatory view of the same operation, and Fig. 5 is a partially simplified sectional view of the conventional example. It is a diagram.

Claims (1)

[Claims] 1 The inner cutter supported by the inner cutter base on the inner surface of the outer cutter is slid and rotated, and the joint body connected to the drive shaft 4 and given a pushing force is linked to the inner cutter base, and the outer cutter The blade is
In the rotary electric razor, the push-up body is mounted movably in the axial direction with respect to the main outer cutter frame via an auxiliary outer cutter frame supported by a push-up body arranged so as to surround the joint body. , comprising a narrow frame-shaped main part that is approximately triangular in plan and has each corner curved outward, and that extends radially outward from approximately the center of each side of this main part, and has an enlarged part at the tip. It is composed of an arm portion having spring properties, and a support lug bent at the base end of the arm portion so as to be perpendicular to the arm portion, and the support lug is in contact with the body side. . A rotary electric razor, wherein the enlarged portion is in contact with a lower edge of the auxiliary outer cutter frame.