JPS582300Y2 - electric razor - Google Patents

Description

[Detailed explanation of the idea] This invention relates to an electric shaver.

Conventionally, when removing the blade block from the electric shaver body, the blade part protruding from the blade block was inserted and removed.

This has the disadvantage of causing injury to the fingertips, deformation of the blade, and poor feel in handling.

Therefore, an object of this invention is to provide an electric shaver whose blade block can be removed without touching the blade part.

A first embodiment of this invention is shown in FIGS. 1 to 6.

That is, in this electric shaver, when the blade block 2 is detachably attached to the electric shaver main body 1, the blade block 2
The electric shaver body 1 is provided with a handle body 4 which has a hop-up spring 3 in elastic contact with the back surface of the electric shaver body 1 and resists the hop-up spring 3 to lock the blade block 2 to the electric shaver body 1. It is something to do.

In this case, the drive rod 5 of the electric shaver main body 1 and the movable blade 6 of the blade block 2 are adapted to engage with each other when the blade block 2 is attached.

As shown in FIGS. 1 and 2, the electric shaver main body 1 includes:
A motor 8 is built into the grip holder 7, and a drive shaft 9 of the motor 8
A pinion 10 is fixed to the motor frame 12, and a face gear 11 is meshed with the pinion 10.
The drive shaft 9 is pivotally mounted with its axial direction perpendicular to the drive shaft 9.

Further, an eccentric cam 14 is integrated with this face gear 11, one end of a drive rod 5 is pivotally supported by the eccentric cam 14, the other end of the drive rod 5 has a pointed shaft 15, and the pointed shaft 15 and the blade block are connected to each other. The second movable blade 6 is fitted with the drive hole 16 of the second movable blade 6, so that the movable blade 6 is given reciprocating motion.

Further, a blade block mounting opening 17 is formed above the pointed shaft 15, and a handle body slide hole 18 is formed at the end of the opening 17 on the motor side.

19 is a blade piece. As shown in FIGS. 1 and 3, the blade block 2 has three guides 21a, 21b, and 21C extending in the longitudinal direction of the inner surface of the base 20, and the guide 21a on the inner surface of the base 20.

A blade pushing leaf spring 22 is attached through the blade pushing leaf springs 21 b and 21 C, and the guide holes 23 a , 23 b , and 23 C of the movable blade 6 of the razor blade are connected to the guide holes 23 a , 23 b , and 23 C on the blade pushing leaf spring 22 .
a, 21b, and 21C so as to be slidable and mounted, and the locking hole 2 of the fixed blade 24 of the razor blade is placed on the movable blade 6.
5a, 25b.

25C is fitted and placed on the guides 21a, 21b, 21C, and the fixing pin 2 is attached to the center guide 21b.
6 is fitted and the movable blade 6 and the fixed blade 24 are pressed to the biased state of the leaf spring 22, and in this state, the movable blade 6 and the fixed blade 24 are supported and regulated by the guides 21a, 21b, 21C by the movement of the pointed shaft 15. The movable blade 6 is designed to perform reciprocating motion.

As shown in FIGS. 1 and 4, the handle body 4 rests on the tip of the operation base 25 to form an inclined surface 26, and has a blade block presser protrusion 27 protruding from its lower end. A pair of outward locking claws 28a, 2 on the back side of the
8 b and is slidably engaged with the slide hole 18 , and the hop-up spring 3 is bent and protruded toward the tip of the operation base 25 .

Further, the blade block 2 described above has a hook recess 29 formed at one end thereof, and a hook protrusion 30 protrudes into the blade block mounting opening 17 of the electric shaver main body 1 opposite to the hook recess 29 so that they can engage with each other. At the same time, the handle body 4 is slid into the engagement recess 31 and the protrusion 27 is engaged with the end of the blade block 2 with the inclined surface 26 thereof. Then, the blade block 2 is fixed to the electric shaver main body 1 with the hop-up spring 3 biased.

At this time, the drive hole 16 of the movable blade 6 of the blade block 2 fits into the pointed shaft 15 of the drive rod 5, and an interlocking relationship between the movable blade 6 and the motor 8 is established.

5 and 6 are explanatory views of the operation of this handle body 4. FIG.

When fixing the blade block 2 to the electric shaver body 1, slide the handle body 4 in the direction of the arrow hole in FIG.
7 and engages with the recess 31.

At this time, the tip of the hop-up spring 3 comes into elastic contact with the back surface of the blade block 2, as shown in FIG. 6, and is biased.

When removing the blade block 2, move the handle body 4 in the direction shown by arrow B in Figure 6.
Slide in the direction of.

Then, when the protrusion 27 separates from the engagement recess 31, the hop-up spring 3 flips the blade block 2 up from the electric shaver main body 1, disengaging the sharp shaft 15 from the movable blade 6, and simultaneously lifting the blade block 2. The electric shaver body 1 is held in a raised state.

By hooking a finger on the raised end of the blade block 2, the blade block 2 can be removed without touching the blade piece 19.

Furthermore, in this case, if the contact part of the hop-up spring 3 with the blade block 2 is provided at a position close to the fitting part between the pointed shaft 15 and the movable blade 6, the urging direction of the hop-up spring 3 and the pointed part Since the axial directions of the shafts 15 coincide with each other, when the movable blade 6 is removed, the sharp shaft 15 can be prevented from being twisted by the drive hole 16, and rattling can be prevented.

A second embodiment of this invention is shown in FIG.

That is, this electric shaver has a hop-up spring 3 integrated into the electric shaver main body 1.

The other parts are the same as those of the first embodiment, and have the same effects.

As described above, since the electric shaver of this invention relies on the hop-up spring to remove the blade block, the blade block can be removed without touching the blade pieces of the blade block.

[Brief explanation of drawings]

Fig. 1 is a partial sectional view of an electric shaver according to the first embodiment of this invention, Fig. 2 is an exploded perspective view showing the interlocking mechanism of the drive rod, Fig. 3 is a partially exploded perspective view of the blade block, and Fig. 4. 5 is a partially cutaway perspective view of the handle body, FIGS. 5 and 6 are explanatory views of the operation of the handle body, and FIG. 7 is a sectional view of the handle body portion of the electric shaver in the second embodiment. 1...Electric razor body, 2...Blade block, 3...Hop-up spring, 4...
・Handle body.

Claims (4)

[Scope of utility model registration request] (1) an electric shaver body; a blade block to which a razor blade is attached and which is detachably attached to the electric shaver body;
A hop-up spring is in elastic contact with the back surface of the blade block in order to separate the blade block from the electric shaver body, and the blade block is removably locked to the electric shaver body by resisting the hop-up spring. An electric razor with a handle body. (2) The electric shaver according to claim 1, wherein the hop-up spring has a contact point close to an engagement point between the movable piece and the drive rod. (3) The electric shaver according to claim 1 or 2, wherein the hop-up spring is integrated with the handle body. (4) The electric shaver according to claim 1 or 2, wherein the hop-up spring is integrated into the electric shaver main body.