JPS58209380A - Reciprocal type electric shaver - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a reciprocating electric shaver, and more particularly to a vibrator for reciprocating the inner blade and body thereof.

The structure of a conventional reciprocating electric shaver will be explained as follows. That is, the main body case, which houses electrical components such as a motor and batteries, is formed by joining two halves molded from a synthetic resin material. An outer cutter frame formed by die-casting aluminum is removably mounted on the upper part of the main body case. The outer cutter frame is fitted with a screw-shaped outer cutter in which introduction holes of various sizes are regularly drilled in a thin metal plate using a method such as press working, and the inner surface of the outer cutter is fixed in a certain shape. An inner cutter body that slides back and forth while applying blade pressure to the outer cutter is positioned within a driving space 1 of the inner cutter body formed by the outer cutter frame and the upper surface of the main body case. The inner cutter body has a substantially semicircular stainless steel blade inserted into a semicylindrical inner cutter base using an insert method.The electric motor is mounted and supported on a flat motor mounting base, A vibrator integrally formed from a synthetic resin material is fixed to the top surface of the motor mounting base. It consists of wearing
A mounting base is provided on both sides of the vibrator, and the drive base from which the connecting rod projects is connected to the mounting base using a plurality of thin pieces.

The details of this thin piece will be explained in detail according to the main part side view (Fig. 4 (Al (see Bl)) of an embodiment of the conventional electric shaver mentioned above. A connecting rod (33), which is fixed via the mounting mark (mounting mark) and protrudes from the drive base, is removably press-fitted into the back side of the inner blade (to). ) presses the outer blade ((5) upward with a constant blade pressure.

A thin-walled piece connecting the drive base (■) and the mounting base (131)) (
2) is the mounting plate (formed perpendicular to the daughter);
When the inner blade body (2) is driven, it swings in a direction perpendicular to the drawing. However, if the pressing force applied during use is apex (perpendicular to I'1) of the outer cutter □□□, there is no problem, but as shown in Fig. When the pressing force (P) is applied, the thin piece (to) moves in the direction of action of the pressing force fPl, and a gap of dimension fil is created between the outer blade and the inner blade (to), The contact area between the outer cutter ball and the inner cutter body (end) decreases, resulting in a significant drop in cutting efficiency.Also, as the thin piece (end) moves, the mo-goo mounting plate (40) of the drive base decreases. The perpendicular distance (hl) to the outer blade decreases, and as a result, the blade pressure applied by the inner blade (34) to the outer blade decreases, resulting in a poor shave.

The present invention was made in view of the essential drawbacks of the conventional electric shaver as described above, and it maintains the contact area between the outer cutter and the inner cutter body constant under all conditions, and the outer cutter of the inner cutter body. The aim is to create a mechanism that prevents a decrease in the blade pressure applied to the blade.

The structure of the present invention is such that an outer cutter frame with a net-like outer cutter attached thereto is mounted and engaged with the upper part of the main body case, and the inner surface of the outer cutter is placed in the drive space formed by the outer cutter frame and the upper surface of the main case. In addition to providing an inner blade body that slides back and forth along the main body case, a motor is disposed inside the main body case via a motor mounting plate, and a vibrator that moves back and forth by an eccentric cam fitted to the drive shaft of the motor is provided. The inner blade body is removably attached to a connecting rod fixed to the motor mounting plate and protruding from the upper part of the vibrator, and the vibrator has mounting bases on both sides, and the connecting rod is protruding from the upper part of the vibrator. The driving base and the mounting base are assembled together using a plurality of thin pieces, and the thin pieces are installed vertically at an angle with respect to the mounting base.

Therefore, even if the inner cutter is displaced due to the pressing force applied to the inclined surface of the outer cutter when using an electric shaver, the thin piece of the vibrator is inclined with respect to the mounting base, so the inner cutter and outer cutter are always close to each other. In addition to maintaining the relationship, the vertical distance of the drive base to the mounting base does not change even if the vibrator is displaced due to the movement of the inner cutter, and the blade pressure exerted by the inner cutter on the outer cutter remains stable, resulting in good sharpening. A reciprocating electric shaver with a vibration drive can be supplied at low cost. Also, due to the slope of the thin piece against the mounting base, a width is created at the mounting position of the motor attached to the motor mounting plate, and the main body case is It has the advantage of making it very easy to install the various electrical components that can be stored.

The present invention will be explained below according to an embodiment of a reciprocating electric shaver with reference to the drawings. However, since the main body case and various electrical components that match the conventional basic configuration are omitted from the drawings, the explanation will focus only on the novel configuration that is different from the conventional electric shaver.

(1) is the number of motors to be installed; a motor (not shown) is placed on the back side and fixed using screws or the like.

Then, the drive shaft of the motor (not shown) is passed through the central opening (2) of the motor mounting plate (1) to the mounting plate (
It protrudes upward from 1).

A mover (3) made of integrally molded synthetic resin is fixed to the upper surface of the mounting plate (1) via screws (41).

And f5) (5) is a boss for positioning.

The vibrator (3) has mounting bases (61 (61) extending from both sides thereof and has a drive base (7) on the upper part.
7) with a connecting rod (8) erected. And the connecting rod (
In 8), the inner cutter body uD, in which a substantially semicircular stainless steel small force 0ωUω... is implanted by an insert, is press-fitted into the synthetic resin inner cutter base (9).

The drive base (7) and the mounting base (6i (6i is the mounting base '6)
1 (thin piece (1
21) (122) (123) (124) connect this thin piece (12i) (+22) (123,
) (124) is formed into a substantially U-shape, and the thin pieces (121) (122) (123>(124)
) by swinging about the base end portion as a fulcrum.
The movable base (1, 7) reciprocates with the knock flat, and the drive base (7)
) The inner cutter body (ID) connected to the connecting rod (8) slides back and forth on the inner surface of the outer cutter (13).

The blade pressure from the inner cutter body (11) against the external force is the same as the thin piece (T21XT22) (12) of the drive base (7).
3) This is caused by the vertical upward stress caused by (124), and separately the vibrator (3) and the inner blade Ql
There is no need to install a spring or the like between l.

The vibration': f (37) has four slightly larger parts (not shown) on the back side of the drive stand (7), and the inside of this part is fitted into the drive shaft of the motor. eccentric cam σ
By freely moving the pin (15) of a, the rotational drive of the motor is converted into the reciprocating drive of the vibrator (3). Further, the Y-shaped groove (16) formed on the side surface of the vibrator (3) is a clasp portion connected to a sharpening blade (not shown) provided so as to be freely protrusive and retractable from the front surface of the main body case.

Note that the thin piece (+21)(,122,>(123)(
724), (12,3)(124) has its length (
121) (122), and is inclined with respect to the mounting base 16) in a steady state.

Next, the first function of the present invention will be explained with reference to FIG.

Figure 2 shows the state of the main parts of the electric shaver when it is stored or when pressure is applied by the skin at right angles to the top of its outer blade (13), and appropriate blade pressure is applied to the outer blade (131). At the same time, the contact area between the outer cutter σJ and the inner cutter body (11) is maintained at the maximum.When a pressing force from the skin is applied to the lateral slope of the outer cutter αJ, the vibrator ( 3) moves to 100,000 times of pressing force, but thin piece (10000 times)
23) is longer than (122), so the #4 child outer blade (13) and inner blade body (
111, and there is no change in the vertical distance of the drive base (7) from the mounting base (6). The η pressure also does not change.Furthermore, since the vibrator (3) can operate as described above, it is no longer necessary for the motor to be located at the running axis position of the connecting rod (8), allowing flexibility in the installation position of the motor. It becomes something that gives rise to sexuality.

In addition, FIG. 6 shows another embodiment of the present invention, in which a thin piece (12
5) (126) are both inclined in a direction opposite to the mounting base (6), and perform the above-mentioned operation in response to the pressing force applied to the inclined part of the outer cutter 03). (
The stress increases in the thin wall portions (125) and (126) with respect to the pressing force applied perpendicularly to the top of the field.

As described above, in the present invention, an outer cutter frame having a linear outer cutter attached thereto is mounted and engaged with the upper part of the main body case, and the outer cutter is placed in the drive space formed by the outer cutter frame and the upper surface of the main case. In addition, a motor is provided inside the main body case via a motor mounting plate, and the blade is reciprocated by an eccentric cam fitted to the drive shaft of the motor. The vibrator is fixed to the motor mounting plate, the inner blade is attached to and detached from a connecting rod protruding from the top of the vibrator, and the vibrator is connected to mounting bases on both sides by a plurality of thin pieces. In addition, since the thin piece is installed vertically at an angle with respect to the mounting base, even if the inner cutter body is displaced due to the pressing force applied to the inclined surface of the outer cutter, the vibrator will not be damaged. Since the inner cutter body moves close to the outer cutter with respect to the thin piece or the mounting base, even if the skin contacts the outer cutter at any angle during use, the outer cutter and the inner cutter will not touch each other. If there is almost no gap between the blade and /)y, the shaving efficiency will not be reduced. In addition, the vertical distance of the drive base to the mounting base does not change, and the blade pressure exerted by the inner blade body on the outer blade is stable during purple, making it possible to supply reciprocating electric shavers with good quality and vibration drive at low cost. can. Moreover, the thin piece is inclined with respect to the mounting base (thereby, a width is created at the mounting position of the motor mounted on the motor mounting plate, making it extremely easy to mount the various electrical components housed in the main body case).

[Brief explanation of drawings]

Fig. 1 is a perspective view of the main parts of the non-invention-embodiment slimming type razor, Fig. 2 (^) is a side view, tBl is a working state diagram corresponding to one razor, and the external view is a second one. Figure (A) shows another embodiment corresponding to 1, and the squares in Figure 4 are conventional examples corresponding to Figure 2 fAl (Bl). (1) Motor mounting plate, (3)... vibrator, (61 (6
1... Mounting stand, (7)... Drive stand, (121) (12
2) (123) (124) (125) (126)...
Thin piece. Applicant Sanyo Electric Co., Ltd. Agent Patent Attorney Shizuo Sano j) Intimidation [♂ n

Claims (1)

[Claims] (1) Place and engage the outer cutter frame with the net-like outer cutter attached to the upper part of the main body case, and insert it along the inner surface of the outer cutter into the drive space formed by the outer cutter frame and the upper surface of the main case. In addition to providing an inner blade body that slides back and forth, a motor is disposed inside the main body case via a motor mounting plate, and a vibrator that moves back and forth is connected to an eccentric cam fitted to the drive shaft of the motor. In the reciprocating electric shaver, the inner cutter body is detachably attached to a connecting rod fixed to the motor mounting plate and protruding from the upper part of the vibrator, wherein the vibrator has mounting bases on both sides. , characterized in that the driving base from which the connecting rod protrudes and the mounting base are connected by a plurality of thin pieces, and the thin pieces are arranged vertically at an angle with respect to the mounting base. A reciprocating electric razor.