JPH0542262A - Reciprocating electric shaver - Google Patents

Abstract

PURPOSE:To satisfactorily support the float of an outer blade. CONSTITUTION:An elastic piece 15 vertically moving an outer blade frame body 1 against an outer blade frame 3 is arranged between both end faces in the longitudinal direction of the outer blade frame body 1 and the inner periphery of the outer blade frame 3, and a coupling section restricting the longitudinal movement of the outer blade frame body 1 via the coupling with the outer blase frame 3 is provided on the side face of the outer blade frame body 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reciprocating electric shaver, and more particularly to a float supporting structure for an outer blade.

[0002]

2. Description of the Related Art In a reciprocating electric shaver, an elastic piece is provided on either one of the outer cutter frame body to which the outer cutter is attached and the outer cutter frame in order to float the outer cutter vertically. There is one in which the tip of the elastic piece is connected to the other.

[0003]

In this case, since the elastic piece is formed integrally with the outer cutter frame or the outer cutter frame, the number of parts for supporting the outer cutter float is minimized. Stable shaving performance is obtained because the piece can bend not only in the vertical direction for float support of the outer blade, but also in the vibration direction of the inner blade (longitudinal direction of the outer blade). I can't.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a reciprocating electric shaver capable of obtaining a float support of an outer blade in a good condition.

[0005]

SUMMARY OF THE INVENTION However, according to the present invention, a reciprocating electric shaver in which an outer cutter frame to which an outer cutter is attached is vertically movably supported with respect to the outer cutter frame and the outer cutter is floatable. In, between the longitudinal end surfaces of the outer cutter frame and the outer peripheral surface of the outer cutter frame facing the outer peripheral surface, an elastic piece is provided that allows the outer cutter frame to move up and down relative to the outer cutter frame. It is characterized in that the side surface of the outer cutter frame is provided with an engaging portion that restricts the movement of the outer cutter frame in the longitudinal direction by engaging with the outer cutter frame.

[0006]

According to the present invention, the outer blade performs a vertical floating operation without vibrating in its longitudinal direction.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the illustrated embodiment. In the embodiment shown in FIGS.
The outer blade 10 attached to is formed as having two portions having an arch-shaped cross section, and the inner blades 20 and 20 are in contact with the inner surfaces of the respective arch-shaped cross-sections. These inner blades 20 and 20 are vertically movable by a driver 6 that converts the movement of an eccentric shaft 50 attached to the output shaft of the motor 5 into a reciprocating motion and are urged upward by a push-up spring 22. It is attached.

The outer blade frame 1 is attached to the outer blade frame 3 via a holding frame 35 which is detachable from the outer blade frame 3.
And a pair of upper and lower elastic pieces 15 and 15, a connecting piece 16 connecting the end portions of the elastic pieces 15 and 15 to each other, and the connecting piece 16
A pair of protrusions 17, 17 provided on the holding frame 35 of the outer cutter frame 1 by locking the protrusions 17, 17 arranged side by side in the locking holes 36 formed in the holding frame 35. And a long engaging hole 18 is provided on the side surface of the outer blade frame 1 in the vertical direction, and a convex portion 37 protruding from the inner surface of the holding frame 35 is provided in the engaging hole 18. By engaging, the movement of the outer blade frame 1 and the outer blade 10 in the longitudinal direction thereof, that is, the movement of the inner blade 20 in the vibration direction is suppressed. The holding frame 35 here is detachably attached to the outer blade frame 3 by engaging hooks 38 formed at both ends thereof with the outer blade frame 3. Further, in the illustrated example, the outer cutter frame 3 is formed as being independent of the main body housing 4, but it may be formed as part of the main body housing 4. It goes without saying that the holding frame 35 may be omitted and the outer cutter frame 1 may be directly attached to the outer cutter frame 3 or the main body housing 4.

In this case, when the outer blade 10 is pressed against the skin, the outer blade 10 is sunk together with the outer blade frame 1 due to the bending of the elastic pieces 15 provided in a pair in the upper and lower ends of the outer blade frame 1, respectively. If the pressing force against the skin is released, the elasticity of the elastic piece 15 and the spring force of the push-up spring 22 pushing up the inner blade 20 restores the original position. During this vertical movement, since the elastic pieces 15 at both ends are vertically paired and the pair of protrusions 17 connected to the holding frame 35 are arranged side by side, the outer blade frame 1 and the outer blade 10 are arranged in the width direction thereof. (Fig. 1
The vertical movement of the outer blade 10 and the outer blade frame 1 is made possible by the engagement between the engaging hole 18 and the convex portion 37 without tilting in the left-right direction (b). The inner blade 20 does not move in the vibration direction).

Another embodiment is shown in FIGS. This is a pair of outer blades 10, 1 corresponding to two inner blades 20, 20 respectively.
0 is provided and each outer blade 10, 10 is attached to a pair of outer blade frame bodies 1, 1, and the outer blade 10 is attached to the outer blade frame body 1 by This is performed by passing the locking projection 12 formed on the side surface through the locking hole 11 of the outer blade 10 and heat sealing. Then, on the opposing surfaces of the pair of outer blade frame bodies 1, 1 are provided engagement ribs 14 that are engaged with each other to restrict movement of the outer blade frame bodies 1, 1 in the longitudinal direction. A boss 19 that restricts the movement of the outer blade frame body 1 in the longitudinal direction by engaging with a rib 39 formed on the inner surface of the holding frame 35 is provided on the. Reference numeral 13 in the drawing denotes an escape hole provided in the outer blade 1 and passing through the engaging rib 14 and the boss 19.

Further, elastic pieces 15, 15 are formed on the end face in the longitudinal direction of each outer blade frame 1 so that the outer blade frame 1 can be moved up and down with respect to the holding frame 35. The outer length A of the holding frame 15 is made shorter than the inner length B, and the walls at both ends are hypotenuses. Therefore, the length of the elastic piece 15 is sufficient to obtain the required spring constant. The outer blade 10 and the outer blade frame 1 can move up and down with a light force, and the elastic piece 1
No damage by repeated fatigue of 5. At this time, the elastic piece 1
As shown in the example of FIG. 5, the outer blade frame 15 has a structure in which the outer blade frame 5 extends from the outer side to the inner side.
It is preferable in that unnecessary tilt can be prevented. Since the shaving is mainly performed at the top of the outer blade 10, there is no problem in the shaving performance even if the outside is narrow.

Further, the holding frame 35 in the illustrated example is provided with lateral elastic pieces 34 at the lower ends of both ends thereof, and the elasticity of the hook 38 is limited to the root of the hook 38 by the lateral elastic pieces 34 located behind the hook 38. In addition, the hook 38 is prevented from fatigue failure by being obtained not only from the longitudinal wall of the holding frame 35.

[0013]

As described above, according to the present invention, the outer cutter frame is provided with respect to the outer cutter frame between the longitudinal end faces of the outer cutter frame and the inner peripheral surface of the outer cutter frame facing the outer cutter frame. Since an elastic piece that can move up and down is provided and an engaging portion that restricts the movement of the outer cutter frame in the longitudinal direction by engaging with the outer cutter frame is provided on the side surface of the outer cutter frame, The blade moves up and down without vibrating in its longitudinal direction, which provides stable shaving performance, and a good outer blade float condition provides a comfortable shaving comfort. Is what you get.

[Brief description of drawings]

FIG. 1A is a cross-sectional view of an embodiment, and FIG. 1B is a side view of an outer blade frame.

FIG. 2 is a vertical sectional view of the above.

FIG. 3 is an exploded perspective view of another embodiment.

FIG. 4 is a perspective view of the inner blade and the main body of the same.

FIG. 5 is a vertical sectional view of the above.

[Explanation of symbols]

 1 Outer blade frame 3 Outer blade frame 10 Outer blade 15 Elastic piece

Claims (1)

[Claims] 1. A reciprocating electric shaver in which an outer blade frame to which an outer blade is attached is vertically movably supported with respect to the outer blade frame so that the outer blade can float, and both ends in the longitudinal direction of the outer blade frame. An elastic piece that allows the outer cutter frame to move vertically with respect to the outer cutter frame is provided between the surface and the inner peripheral surface of the outer cutter frame facing the outer cutter frame, and the outer cutter frame is provided on the side surface of the outer cutter frame. A reciprocating electric shaver, characterized in that it is provided with an engaging portion for restricting movement of the outer blade frame in the longitudinal direction by engagement with.