WO2007057979A1

WO2007057979A1 - Ear hair cutter

Info

Publication number: WO2007057979A1
Application number: PCT/JP2005/021627
Authority: WO
Inventors: Eiji Ota
Original assignee: Lozenstar Kabushiki Kaisha
Priority date: 2005-11-18
Filing date: 2005-11-18
Publication date: 2007-05-24

Abstract

A cutter (10) for cutting ear hairs, having a casing (12) with elongated one section (14); a stationary blade (16) and a movable blade (18) that are provided in the one section of the casing, the stationary blade (16) being oriented in the direction of the axis of the one section, the movable blade (18) being driven in the direction of the axis of the one section. The stationary blade and the movable blade have saw teeth (46, 48) exposed to the outside of the casing. The cutter further includes a sheet spring (20) for pressing the movable blade against the stationary blade and having two bent ends (52). The sheet spring is installed such that both ends (52) of the spring are individually in contact with the movable blade (18) at two points in its longitudinal direction.

Description

Ear hair force cutter

The present invention relates to a cutter used for excising hair (ear hair) that may grow in the ear canal of a human ear.

Background art

Light

Conventionally, as a cutter for excising ear hair, a casing having an elongated part, and a casing arranged in the axial direction in the part of the casing and overlapped with each other

A stationary blade and a movable blade driven in the axial direction of a part of the casing, each having a saw blade exposed outside the casing, and the movable blade with respect to the stationary blade. It has been proposed to have a leaf spring having two bent ends that press.

According to this, by driving the movable blade under the action of the pressing force by the leaf spring, it is possible to cut the ear hair that enters between the saw blades of the two blades that rub against each other.

By the way, if an elongated part of the ear hair force ter casing can be inserted into the ear canal, ear hair can be excised more efficiently.

However, in the conventional ear hair cutter, the leaf springs are arranged so that both ends thereof are in contact with the movable blade at two points in the width direction perpendicular to the longitudinal direction. Yes. For this reason, the movable blade and the stationary blade in contact therewith require a width dimension that is equal to or greater than the distance between both ends of the leaf spring, and the thickness of a part of the casing that houses these blades is small. There was a big limit to doing it. Disclosure of the invention

Problems to be solved by the invention

An object of the present invention is to provide an ear hair cutter with a narrower part of a casing in which the stationary blade and the movable blade are accommodated.

Means for solving the problem The present invention relates to an ear hair cutter, a casing having an elongated portion, a stationary blade disposed in a portion of the casing toward an axial direction thereof and overlapped with each other, and a part of the casing A movable blade driven in an axial direction, each having a stationary blade and a movable blade having saw teeth exposed to the outside of the casing, and two bent ends that press the movable blade against the stationary blade. The leaf spring is disposed so that both end portions thereof are in contact with each other at two locations in the longitudinal direction of the movable blade.

Preferably, a part of the casing has a substantially circular cross-sectional shape.

The invention's effect

According to the present invention, the leaf spring for pressing the movable blade against the stationary blade is disposed so that both end portions thereof are in contact with each other at two points in the longitudinal direction of the movable blade. The width of the leaf spring, the stationary blade and the movable blade can be set to be smaller compared to the case where they are in contact with each other at two locations in the width direction of the movable blade. These functions can be secured sufficiently.

As a result, the thickness of a part of the casing that accommodates them can be set to be smaller, so that the part of the casing can be easily introduced into the ear canal. When the cross-sectional shape of a part of the casing is circular, the ear hair can be cut by rotating a part of the casing around its axis in the outer ear canal.

Brief Description of Drawings

FIG. 1 is an exploded perspective view showing a part of a force tatter for ear hair according to the present invention. Fig. 2 is a partially enlarged view of a part of the ear hair force utter.

BEST MODE FOR CARRYING OUT THE INVENTION

Referring to FIG. 1, an ear hair cutter according to the present invention is generally indicated by reference numeral 10.

The cutter 10 includes a casing 12 extending in the vertical direction in the figure, and a plate-like stationary blade 16 accommodated in the casing, more specifically, in a long thin part 14 described later positioned at the top of the casing 12. A movable blade 18 and a leaf spring 20. The casing 12 includes a relatively thick cylindrical main body 21 having the same axis, and a relatively thin cylindrical portion (tip portion) 14 smoothly connected to the upper portion of the main body. The cutter 10 can grasp the main body 12 and bring the tip portion 14 close to the ear in order to cut the ear hair that grows in the ear canal using the cutter 10.

The casing 14 in which the stationary blade 1 6, the movable blade 1 8, and the leaf spring 2 0 are disposed is composed of two parts 2 2, 2 4 halved along the plane including the axis. One half portion 2 2 is connected to the main body 21, and the other half portion 24 is composed of a cover piece separated from the main body 21.

The cover piece 2 4 is releasably attached to both the main body 2 1 and one half part 2 2 through, for example, an attachment structure shown in the figure.

The mounting structure shown in the figure includes a notch 26 provided at the lower end of the cover piece 24, a claw (not shown) provided in the notch 26 provided in the main body 21, and a cover piece. A hole 28 provided at the upper end portion of 24 and a protrusion 30 having a portion which is provided at the upper end portion of the half portion 22 and can be fitted into the hole 28 from above.

The tip portion 1 4 of the casing 1 2 is a part of the double-edged blades 1 6 and 1 8 when the cover piece 2 4 is attached to the half portion 2 2. It has a slit 3 1 (Fig. 2) that allows the tip end 1 4 to protrude (expose).

Further, three protrusions 3 2, 3 4, and 3 6 are provided inside the cover piece 2 4 so as to be spaced apart from each other in the axial direction (vertical direction). On the other hand, the stationary blade 16, the movable blade 18, and the leaf spring 20 are each provided with two openings 3 8, 4 0, 4 2 that allow the two protrusions 3 2, 3 6 to pass through the cover piece, The leaf spring 20 is further provided with an opening 44 that allows the remaining protrusions 34 to be inserted.

The stationary blade 1 6, the movable blade 1 8, and the leaf spring 20 are overlapped with the cover piece 2 4 in the order of the leaf spring 20, the movable blade 1 8, and the stationary blade 1 6, and their openings 3 8 to 4. 4 Cover 3 2 4 3 3-6 are supported by the cover 2 4 by passing the projection 3 2 to 3 6, and the screw 4 3 extending through one of the openings 3 8 to 42 2 4 Fixed to the cover piece 2 4 by screwing into the screw hole 4 5 provided in the lower projection 3 6. The reference numeral 47 attached to the upper part of the stationary blade 16 is inserted from below into the hole 28 provided in the cover piece 24 when the stationary blade 16 is fixed to the cover piece 24. The protruding part is shown.

Of these openings 38 to 44, both openings 40 provided on the movable blade 18 and through which the projections 3 2 and 3 6 are inserted are set to be long in the longitudinal direction of the movable blade 18. Therefore, only the movable blade 1 8 can reciprocate linearly in the longitudinal direction of the cover piece 2 4 in contact with the stationary blade 16 and the leaf spring 20 within the range of the length of both openings 40. It is said that. Each of the stationary blade 16 and the movable blade 18 has an elongated rectangular shape as a whole, and has saw teeth 46, 48 provided along one of the long sides of the rectangle. The saw blade 4 8 of the movable blade 1 8 overlaps the saw blade 4 6 of the stationary blade 1 6 so as not to protrude beyond the tip of the saw blade, and the movable blade 1 8 moves over the stationary blade 1 6. When reciprocating (sliding) linearly in the direction of extension of these long sides, both saw teeth 46, 48 shear the ear hairs that enter between them.

In the main body 2 1 of the casing 1 2, there is a motor for driving the movable blade 1 8 so as to reciprocate linearly, a link connected to the motor and the movable blade 18, and a power source of the motor A battery or the like (not shown) is accommodated. The movable blade 18 is provided with a hole 50 at its lower end to which the end of the link is connected. Reference numeral 51 denotes a switch for operating the motor.

The illustrated leaf spring 20 has a W-shaped overall shape, and is in contact with the movable blade 18 at both bent end portions 52. More specifically, each end portion 52 of the leaf spring 20 is divided into two by an opening 42 that crosses the end portion 52, and is in contact with the movable blade 18 at both sides of the opening 4 2.

The leaf spring 20 is fixed to the cover piece 24 in a state where it is pressed against the inner wall of the cover piece 24 by the movable blade 18. The leaf spring 20 exerts a pressing force on the movable plate 18 using the inner wall as a reaction force support due to the elastic deformation caused by the pressing of the movable blade 18, thereby moving the movable blade 18 and the stationary blade. The contact state with 1 6 is maintained. In the present invention, both end portions 52 of the leaf spring 20 are in contact with each other at two locations in the longitudinal direction of the movable plate 18, and thereby the pressing force of the leaf spring 20 on the movable plate 18 The distance between the two contact points required to obtain (elastic restoring force) is secured. In order to secure this distance, it is sufficient that the movable plate 18 and the leaf spring 20 each have a minimum width, and the width of the stationary blade 16 is accordingly adjusted. The dimensions can be set smaller. As a result, the front end portion 14 of the housing that accommodates the blades 16 and 18 and the leaf spring 20 can be set to be thinner.

For example, when the average diameter of the ear canal of the ear is 6 to 8 mm, the diameter of the distal end portion 14 of the housing can be 5.5 mm. According to this, in order to remove the ear hair, the front end portion 14 of the housing is introduced into the ear canal of the ear and rotated around its axis, while the saw blades 4 6, 4 of the double-edged blades 1 6, 1 8 8 Ear hairs entering the inside can be cut off.

Preferably, as shown in FIG. 2, the saw blades of stationary blades 1 6 or 6 or movable blades 1 8

As a guard, it is the same as the protruding height of these saw teeth 4 6, 4 8 on both sides of the saw blades 4 6, 4 8, respectively, so that the 4 8 is difficult to touch the skin around the ear canal directly. A plurality of protrusions 54 having a slightly higher height are provided. These protrusions 5 4, respectively, are circumferential surfaces that form part of the cylindrical surface 5 6 of the tip portion 14.

5 8 is preferred.

Claims

The scope of the claims

1. Ear hair cutter,

A casing having an elongated portion;

A stationary blade disposed in a part of the casing in the axial direction and superposed on each other, and a movable blade driven in the axial direction of a part of the casing, each having a saw tooth exposed outside the casing. A stationary blade and a movable blade, and a leaf spring having two folded ends that press the movable blade against the stationary blade,

The leaf spring is disposed such that both ends thereof are in contact with each other at two positions in the longitudinal direction of the movable blade, respectively.

2. The ear hair cutter according to claim 1, wherein a part of the casing has a substantially circular cross-sectional shape.