JPH0713647Y2 - Rotary electric razor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a rotary electric shaver in which the inner blade is rotated in the reverse direction.

(B) Conventional Technology A conventional rotary electric shaver is disclosed in, for example, Japanese Patent Laid-Open No. 57-948.
Since the rotation direction of the motor is only one direction as disclosed in Japanese Patent Publication No. 5, the inner blade body rotated by the rotation of the motor rotates only in one direction, and the inner blade blade provided on the inner blade body is It slid in only one direction with respect to the blade.
However, since the whiskers extend in different directions in general, the whiskers may fall over the whiskers extending in the same direction as the sliding direction of the inner blade, and the beard may not be shaved deeply. Further, in order to slide the inner blade on the outer blade in the direction opposite to the direction in which the beard extends so that the beard does not fall, the razor body must be held in the opposite direction.

On the other hand, as disclosed in Japanese Examined Patent Publication No. 1-20910, even if the rotation direction of the motor is only one direction, with respect to the rotation axis of the inner blade body to the inner screw right and left screw direction There is a type in which a plurality of blade edges inclined to each other are formed, and the inner blade is slidably contacted with the outer blade in the forward and reverse directions, but there is a disadvantage that the number of parts of the inner blade body is large and the structure is complicated.

(C) Problems to be Solved by the Invention In view of the above points, the present invention will make it possible to shave evenly and deeply against a beard extending in all directions with a simple structure and a simple operation. It is what

(D) Means for Solving the Problem Motor 6, outer blade 4, spiral inner blade 10 slidingly contacting the inner surface of outer blade 4 by the rotational driving force of motor 6, and forward / reverse rotation control of motor 6 The rotary electric shaver including the means 3 is characterized in that the inner blade 10 has edge portions for cutting whiskers on both sides in forward and reverse directions in sliding contact with the inner surface of the outer blade 4.

(E) Action According to the present invention, the spiral inner blade 10 makes sliding contact with the inner surface of the outer blade 4. When the rotation of the motor 6 is switched between forward and reverse by the forward / reverse rotation control means 3, the sliding contact direction of the inner blade 10 with the inner surface of the outer blade 4 is switched. Therefore, even for a whisker that extends unevenly, it is not necessary to change the slidable contact direction of the inner blade 10 for proper shaving or reverse shaving, and to change the razor. Further, the inner blade 10 is provided with an edge portion that cuts the whiskers in both the forward and reverse sliding contact directions of the outer blade 4. Therefore, since the inner blade 10 uses the edge portions on both sides, the number of edges is doubled as compared with the case where there is an edge portion on only one side, and the efficiency of shaving is improved.

(F) Embodiment An embodiment of the present invention will be described below in detail with reference to the drawings.

In FIG. 1, (1) is a main body case of a rotary electric shaver using the present invention, and a power switch (2) and a forward / reverse reversal switch as a forward / reverse rotation control means on the side surface of the main body case (1). (3) is slidably provided with respect to the main body case (1), and an outer blade (4) having a large number of whisker introduction holes is provided at the upper end of the main body case (1). An inner blade body (5) and a motor (6) are arranged on the inner surface of the outer blade (4), and the inner blade body (5) is connected to a gear (7) of the motor (6). ), A rotary shaft (9) loosely fitted in the main body case (1), and a coil body (14) shown in FIG. 6 which is held by the support body (8) and is molded into the rotary shaft (9). It consists of an inner blade (10) spirally wound around the center. Here, the inner blade (10) is arranged so as to come into pressure contact with the outer blade (4).

In the above configuration, set the power switch (2) to "O
When the motor (6) is rotated in one direction, the support (8) connected to the motor (6) rotates about the rotation axis (9), that is, the inner blade (10). Rotates about the rotation axis (9). At this time, the spirally wound inner blade (10) is in sliding contact with the outer blade (4), and the sliding contact position moves in one direction as the inner blade (10) rotates, The beard inserted through the beard introducing hole of the blade (4) is cut. By the way, in general, the directions of whiskers are not uniform, and as shown in FIG.
The whiskers (11) extending in the same direction as the sliding direction of (0) cannot be deeply shaved because the whiskers (11) fall down when the inner blade (10) slides. Here, the forward / reverse inverting switch (3) having the circuit configuration shown in FIG.
By switching from the contact to the contact (b), the rotation of the motor (6) can be reversed, that is, the sliding direction of the inner blade (10) can be reversed as described above. Therefore, as shown in FIG. 3, the inner blade blade (10) slides in the direction opposite to the direction in which the whiskers (11) extend, so that the whiskers (11) can be back-shaving and deep shaving can be performed.

FIG. 5 shows another embodiment using the present invention, which uses a memory control system as the forward / reverse rotation control means, and a control box (12).
Calculate the rotation speed or rotation time of the motor (6) by
The rotation of the motor (6) is reversed in the normal and reverse directions at the number of rotations of the motor (6) or the rotation axis time interval set by the repeat pitch (time) setting switch (13) provided on the main body case.

(G) Effect of the Invention According to the present invention, even for a whisker that extends unevenly, it is possible to perform forward shaving or reverse shaving by appropriately switching the sliding direction of the inner blade 10, and it is not necessary to carry the razor. Furthermore, since the inner blade 10 is provided with an edge portion for cutting the whiskers in both the forward and reverse sliding contact directions of the outer blade 4, the inner blade 10 uses the edge portions on both sides, The number of edges is doubled as compared with the case where there is an edge portion on only one side, and the efficiency of shaving is improved.

Further, the edge portion can be formed tightly by adjusting the pitch of the spiral inner blade 10, and as a result, the shaving time can be shortened.

[Brief description of drawings]

FIG. 1 is a front view of an essential part of a rotary electric shaver using the present invention, FIG. 2 is an enlarged cross-sectional view of an essential part of the same motor in forward rotation, and FIG. FIG. 4 is a circuit diagram of a forward / reverse rotation control means by the same forward / reverse reversing switch, FIG. 5 is a block diagram of a forward / reverse rotation control means by the same memory control method, and FIG. 6 is a schematic view of a coil body before forming an inner blade. . (1) …… Main body case, (3) …… Forward / reverse reversing switch,
(4) ... Outer blade, (5) ... Inner blade, (8) ... Support, (9) ... Rotation axis, (10) ... Inner blade, (1
1) …… beard, (12) …… control box, (1
3) …… Repeat pitch (time) setting switch.

Claims (1)

[Scope of utility model registration request] 1. A motor 6, an outer blade 4, a spiral inner blade 10 slidingly contacting an inner surface of the outer blade 4 by a rotational driving force of the motor 6, and a forward / reverse rotation control means 3 of the motor 6. In the rotary electric shaver, the inner blade 10
Is a rotary electric shaver, characterized in that it has edge portions for cutting whiskers on both sides in forward and reverse directions, which are in sliding contact with the inner surface of the outer blade 4.