JPH0427509Y2 - - Google Patents

Description

[Detailed explanation of the invention] (a) Industrial application field The present invention is an electric razor, in particular, an electric shaver that has a main shaving blade section on the front side of the main body case, and a razor blade section that has a fixed blade and a movable blade on the rear side. The present invention relates to an edge cutting blade drive device that transmits the driving force of a driving means of a main razor blade portion to an edge cutting blade portion.

(B) Prior Art As a conventional example of an electric shaver that has a main shaving section on the front surface and a sharp cutting section consisting of a fixed blade and a movable blade on the rear surface, which is the object of the present invention,
-There is an "electric razor" published in Publication No. 16590. In this publication, an elastic member is provided for forcibly moving the edge unit to either the operating position or the storage position with respect to the base line, and the operation knob and the edge unit are connected to each other in order to move the edge unit. The electric shaver is shown movably engaged in the direction a predetermined distance relative to each other. In this example, the articulation mechanism for the movement of the operating knob is the engagement between the engagement protrusion at the tip of the elastic arm integrally formed at the bottom of the sliding unit and the chevron-shaped protrusion and groove formed on the inner surface of the main body engagement. However, it is not easy to provide a protrusion on the inner surface of the main body case due to the structure of the resin mold, and it is also problematic due to the problem of relative position with the elastic arm of the edge unit. There is a problem in that the position of the electric shaver unit and its operating knob is restricted, and the design of the electric shaver is restricted.

(c) Problems to be solved by the invention The problem to be solved by the invention is to have a sharpening blade drive transmission member that is movable around a support shaft provided on the operating knob of the sharpening blade part. An object of the present invention is to develop an effective articulation mechanism for an operating knob when it is not possible to form a protrusion on the main body case side.

(d) Means for solving the problem The main razor has a main razor blade part on the front side of the main body case, and has a sharp blade part consisting of a fixed blade and a movable blade on the rear side,
A motor for driving both blades is housed inside the main body case, and a motor board fixed across the drive shaft surface and peripheral side of the motor is provided, and a motor board is provided between the board and the inner surface of the main body case. The cutting blade drive transmission member is movable into the space formed in the main body case, and is fitted onto a support shaft integrally formed to hang down from the operating knob slidably attached to the upper surface of the main body case. It is provided so as to be movable according to the movement of the base plate, and an articulation mechanism is constructed by engaging and disengaging a pair of elastic arms formed on the upper surface of the base plate and the support shaft.

(e) Effect When the operating knob is moved, the spindle also moves with it. At this time, the support shaft advances while pushing and expanding the elastic arms formed on the motor board. When the operation of the operating knob is completed, the expanded elastic arm returns to its original state, giving a sense of movement of the operating knob.

(F) Embodiment The razor blade drive device of the present invention will be described in detail below with reference to an embodiment shown in FIGS. 1 to 3.

In the main part longitudinal sectional view of FIG. 1, reference numeral 1 denotes the main body case of the electric shaver molded from ABS resin, with the main shaving blade part 2 on the left side of the drawing and the razor blade part 3 on the right side. 4 is a DC motor housed inside the main body case 1;
A motor board having an L-shaped cross section is positioned and fixed by ribs (not shown) formed on the inner surface of the motor 4, and extends over the drive shaft surface from which the drive shaft 5 of the motor 4 protrudes and the circumferential surface. 6 are arranged. As detailed in the horizontal cross-sectional view of FIG. 2 and the exploded perspective view of FIG. with a vertical part and a motor 4
It consists of a horizontal portion formed by a pair of elastic arms 9 and 10 that cover a part of the circumferential side of the holder and are opposed to each other at the center. Reference numeral 15 includes a vertical portion having a hole 11 that fits into the horizontal support shaft 8, a long hole 13 that can be engaged and disengaged with the cam member 12 that is fitted into the drive shaft 5, and a top-shaped engagement hole 14. The cam member 12 continuously swings the swing member 15 around the horizontal support shaft 8 while the motor 4 is driving. 16 is the swinging member 1
This edge cutting blade drive transmission member has a spherical protrusion 17 that can be engaged with and disengaged from the engagement hole 14 of No. be. This transmission member 16 is slidably provided in the upper surface opening 19 of the main body case 1.
An operating knob 20 mounted so that it can be operated from the outside of the
A center opening 22 is fitted into a support shaft 21 that is integrally formed to hang down from the inner surface of the operating knob 20.
As the motor board 6 moves in and out between the elastic arms 9 and 10 on the upper surface of the motor board 6, the engaging portions 9 at the tips of the elastic arms 9 and 10 move.
1, 101 and the support shaft 21 are engaged with and disengaged from each other to form an articulation mechanism.

The sharpening blade part 3 is composed of a fixed comb blade 31 fixed to one end extension 201 of the operating knob 20 and a movable comb blade 32 sliding parallel to the fixed comb blade 31. , the movable comb blade 3
A small hole 232 into which the connecting protrusion 18 of the sharp edge drive transmission member 16 fits is formed in the drive rod 23 which is connected and fixed to the drive rod 23 .

Reference numeral 24 denotes a beard receptacle formed on the front surface of the main body case 1, and the head of the cam member 12 penetrates the bottom surface of the receptacle 24 and protrudes into the receptacle 24. A blade body is attached, and an outer cutter frame member, which engages an outer cutter (not shown), is screwed and fixed to the saucer portion. Further, on the rear surface of the main body case 1, a long hole 25 is formed through which the sharp edge portion 3 can move in and out by sliding the operation knob 20.

In the sharpening blade drive device for an electric shaver having the above configuration, when the motor 4 is being driven by a power source (not shown), when the operating knob 20 is at the position indicated by the solid line in FIG. The spherical protrusion 17 of the sharp cutting blade drive transmission member 16 is located between the tips of the elastic arms 9 and 10, and is located at the large diameter portion of the top-shaped engagement hole 14 of the swinging member 15 or on the outside thereof. 4 cannot be transmitted to the transmission member 16. At this time, the sharp blade part 3 is
It is stored inside.

Next, the operating knob 20 is slid to the right in FIGS. 1 and 2 until it reaches the position shown by the broken line.
Then, a spherical projection 1 is formed in the small diameter portion of the top-shaped engagement hole 14.
7 are fitted, and the edge cutting blade drive transmission member 16 receives the drive of the swinging member 15 by the cam member 12 and starts swinging around the support shaft 21. The movable comb blade 32 of the edge cutting blade portion 3 is brought into a state of protruding outward from the main body case 1 by the movement of the operation knob 20.
performs a sliding movement relative to the fixed comb blade 31 by means of the transmission member 16. The movement of the support shaft 21 due to the sliding of the operating knob 20 causes the support shaft 21 to move between the tips of the elastic arms 9 and 10 against the elasticity of the elastic arms 9 and 10.
The engaging portions 9 of the elastic arms 9 and 10 are located at the position indicated by the broken line in Figure 2.
It is locked between 1 and 101.

(g) Effects of the invention As explained above, the present invention has a main razor blade part on the front side of the main body case, a razor blade part on the rear face consisting of a fixed blade and a movable blade, and a double blade part. A motor to be driven is housed inside the main body case, and a motor board fixed across the drive shaft surface and peripheral side of the motor is provided, and the motor board is formed between the board and the inner surface of the main body case. The sharpening blade drive transmission member is movable in the space of the main body case, and is fitted onto a support shaft integrally formed to hang down from the operating knob slidably attached to the upper surface of the main body case, thereby allowing movement of the operating knob. The adjustment mechanism is constructed by engaging and disengaging the pair of elastic arms formed on the upper surface of the base plate and the support shaft, so the edge of the operating knob is By making the support shaft for the blade drive transmission member a component of the articulation mechanism when the operating knob slides, it is easy to eliminate the need to form special protrusions for the articulation mechanism in other parts of the electric shaver. The structure is expected to have the effect of moderating the operation knob.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal cross-sectional view of the essential parts of an embodiment of the razor blade drive device of the present invention, Fig. 2 is a -' horizontal cross-sectional view of Fig. 1, and Fig. 3 is a main part of the motor section. It is a partially exploded perspective view. 1... Main body case, 2... Main razor blade section, 31...
Fixed blade, 32...Movable blade, 3...Edge blade part,
4...Motor, 5...Drive shaft, 6...Motor board, 16...Edge blade drive transmission member, 20...
Operation knob, 21... Support shaft, 9, 10... Elastic arm.

Claims (1)

[Scope of utility model registration request] It has a main razor blade part on the front side of the main body case, and a sharp blade part consisting of a fixed blade and a movable blade on the rear side,
A motor for driving both blades is housed inside the main body case, and a motor board fixed across the drive shaft surface and peripheral side of the motor is provided, and a motor board is provided between the board and the inner surface of the main body case. The cutting blade drive transmission member is movable within the space formed in the main body case and is fitted onto a support shaft integrally formed to hang down from the operating knob slidably attached to the upper surface of the main body case. The edge of an electric shaver is provided so as to be movable according to the movement of the electric shaver, and an articulation mechanism is configured by engaging and disengaging a pair of elastic arms formed on the upper surface of the substrate with the support shaft. Sled blade drive device.