JPS6216115B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a drive device for a reciprocating electric shaver.

[Background technology]

The conventional reciprocating electric shaver drive device as shown in FIG. 1 was as shown in FIGS. 2 and 3. That is, the eccentric pin 3 is attached to the motor shaft 2 of the motor 1, the driver 4 is engaged with it, and the inner cutter frame 6 of the main blade 5 and the trimmer 7 are connected to the driver 4.
The movable blade drive protrusion 8 is engaged. The driver 4 is integrally formed of plastic, and includes a thin rocking plate 9,
The joint base 10 is mainly composed of a joint base 10 supported by the joint base 9', and a swing lever part 11 whose one end is integrally connected to the lower surface of the joint base 10. ', only reciprocating motion in the direction of arrow X is possible, and the swinging lever portion 11 is configured to be capable of swinging motion in the direction of arrow Y, which is perpendicular to arrow X.
The joint base 10 of this drive element 4 has a main blade joint 12.
and a trimmer joint 13, and the swing lever part 1
1 has an eccentric pin engagement hole 14 formed at its tip. When the motor 1 operates and the motor shaft 2 rotates, the eccentric pin 3 rotates and transmits the movement to the swinging lever section 11. The swinging lever part 11 is an eccentric pin 3
Of the rotation, it swings according to the component of arrow Y, and the component of arrow X is transmitted to the joint base 10. Due to the reciprocating motion of the joint base 10, the main blade joint 12 and the trimmer joint 13 reciprocate, the inner cutter frame 6 of the main blade 5 performs a reciprocating motion, and the trimmer 7 performs a trimmer operation (arrow Z). When the movable blade drive protrusion 8 is engaged with the trimmer joint 13 from the loose state shown in FIG. 3, the trimmer operation is performed.

However, the drive device for this reciprocating electric shaver has the disadvantage that since the main blade 5 operates when the trimmer is driven, noise and vibration are large, and the load applied to the motor 1 is also large, which greatly affects battery life. It was hot.

[Purpose of the invention]

An object of the present invention is to provide a reciprocating electric shaver drive device that can reduce loads, vibrations, and the like.

[Disclosure of the invention]

The reciprocating electric shaver drive device of this invention includes:
A main blade driver having the same structure as the main blade driver, which has a joint base supported by a swing plate and capable of reciprocating motion in one direction, and a swing lever section provided on the underside of the joint base. A trimmer drive element is arranged in parallel with the main blade drive element, and the tips of the swing lever parts of the main blade drive element and the trimmer drive element are inserted into and engaged with the swing lever part to the motor shaft. A pair of eccentric pins to be coupled are located on the same side as the eccentric pin with respect to the swing lever part, one end faces the swing lever part of the main blade driver, and the other end swings the trimmer drive element. By having a control rod facing the lever part and pressing one of the swing lever parts in a direction intersecting the reciprocating direction of the joint base by swinging the control rod, the swing lever part and the It is equipped with a switching lever for disengaging the engagement with the eccentric pin.

According to the structure of the present invention, since the rotational power input to the main blade driver and trimmer driver is switched by the switching lever, they can be operated individually, reducing load and vibration compared to the conventional example, and reducing the battery power. The service life can be improved, and there is no need to accidentally cut hair with the main blade when using the trimmer.

Embodiment An embodiment of the present invention is shown in FIGS. 4 to 6. That is, in this reciprocating electric shaver drive device, two drive shafts 17 and 18 are arranged parallel to a motor shaft 16 of a motor 15, and the motor shaft 16 and the drive shafts 17 and 18 are connected by gears 19 to 21. Then, eccentric pins 22 and 23 are attached to each drive shaft 17 and 18. The trimmer driver 24 and main blade driver 25 are engaged with these eccentric pins 22 and 23, and the trimmer 26 and main blade 27 are engaged with the trimmer driver 24 and main blade driver 25. The engagement between the trimmer drive element 24 and the main blade drive element 25 and the eccentric pins 22 and 23 is controlled. The trimmer drive element 24 and the main blade drive element 25 are shown in FIGS. 2 and 3 above.
As shown in the figure, the rocking plate 2 is made of plastic and has a thin wall.
joint bases 30, 31 supported by 9, 29';
It consists of swing lever parts 32 and 33 provided on the lower surface of joint bases 30 and 31, and swing plates 29 and 29' are connected to a common fixed plate 34 and 35, respectively, and drive the trimmer drive element 24 and the main blade. Children 25 are arranged in parallel,
It is fixed to the razor body 36 with screws or the like. The swing lever parts 32 and 33 hang down from mutually opposite sides in the longitudinal direction of the joint bases 30 and 31, and are attached to the joint base 3.
Parallel to the longitudinal direction of 0,31 and extending in the opposite direction,
A conical hole 37 is provided at the tip of the swinging lever portions 32 and 33.
38, and a pin engagement hole 39 is formed at the tip thereof. Further, the joint bases 30 and 31 form a trimmer joint 30a and a main blade joint 31a.

The switching lever 28 has a rotating rod 40 connected to the joint base 3.
Swinging lever parts 32, 3 from the gap 41 of 0,31
A control rod 42 is integrally formed at right angles to the tip of the rotary rod 40, and each tip of the control rod 42 is located between the swing lever parts 32 and 33.
The other end of the rotating rod 40 is exposed from the razor body 36 and connected to a knob 43.

When the knob 43 of the switching lever 28 is turned toward the trimmer (arrow a), the tip of the control rod 42 pushes up the swinging lever portion 33 on the main blade 27 side, thereby connecting the pin engagement hole 39 with the eccentric pin 23. are disengaged and separated from each other. On the other hand, the pin engagement hole 39 of the trimmer-side swing lever section 32 engages with the eccentric pin 22 through the conical hole 37 due to its elastic restoring action. When the motor 15 is operated and the motor shaft 16 is rotated, the drive shafts 17 and 18 are rotated through the gears 19 to 21, and the eccentric pins 22 and 23 are rotated. Since the eccentric pin 22 is engaged with the swinging lever part 32, it drives the swinging lever part 32, which causes the joint base 30 to reciprocate in the same way as the operation shown in FIG. 2, thereby driving the trimmer 26. I will do it. Next, in this state, move the knob 43 of the switching lever 28 to the main blade 27.
When switching to the side (arrow b), the swing lever part 32 on the trimmer 26 side is pushed up and the eccentric pin 22 disengages from its pin engagement hole 39, as shown in FIG. 33 is restored and the engagement hole 39 engages with the eccentric pin 23 through the conical hole 37, thereby driving the main blade 27. As a result, only one side is always driven by the switching operation of the switching lever 28.

〔Effect of the invention〕

According to the reciprocating electric shaver drive device of the present invention, since the rotational power input to the main blade driver and the trimmer driver is switched by the switching lever,
They can be operated individually, reduce load and vibration compared to conventional models, improve battery life, and eliminate the worry of accidentally cutting hair with the main blade when using the trimmer.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a reciprocating electric shaver to which a conventional example is applied, Fig. 2 is an exploded perspective view of its drive device,
Figure 3 is a partial perspective view of the body, Figure 4 is an exploded perspective view of an embodiment of the present invention, Figure 5 is a cross-sectional view, and Figure 6 is a cross-sectional view taken along the - line. 16... Motor shaft, 22, 23... Eccentric pin,
24...Trimmer drive element, 25...Main blade drive element, 2
6... Trimmer, 27... Main blade, 28... Switching lever, 29, 29'... Rocking plate, 30, 31... Joint base, 32, 33... Rocking lever part, 42...
control rod.

Claims (1)

[Claims] 1. A main blade driver having a joint base supported by a rocking plate and capable of reciprocating movement in one direction, and a swing lever section provided on the underside of the joint base, and having the same configuration as this main blade driver. and a trimmer drive element arranged in parallel with the main blade drive element, and a motor shaft that is inserted into and engaged with the swing lever part at the tip of the swing lever part of the main blade drive element and the trimmer drive element. a pair of eccentric pins that are connected to the swing lever portion, and located on the same side as the eccentric pin with respect to the swing lever portion, one end facing the swing lever portion of the main blade driver, and the other end facing the swing lever portion of the trimmer drive element. It has a control rod that faces the swinging lever part, and the swinging lever part is moved by pressing one of the swinging lever parts in a direction crossing the reciprocating direction of the joint base by swinging the control rod. A reciprocating electric shaver drive device comprising a switching lever for disengaging from engagement with the eccentric pin.