JP2005312598A - Electric shaver - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electric shaver which can not only tilt a head section in front, back, left and right directions but also rotatably support it against a main body case so that the head section can be held at right angles to the skin. <P>SOLUTION: The electric shaver, including the head section 40 which has a cutter 50 and a foil 58 at the top end of the main body case 20 held by a user and a driving means 70 to drive the cutter 50 in the head section 40, supports the head section 40 so as to be tilted in the front, back, left and right directions and rotated against the main body case 20. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an electric razor in which a head portion is disposed so as to be tiltable and rotatable in the front-rear and left-right directions with respect to a main body case.

The electric razor has a head portion at the upper end of the body case gripped by the user. The head portion includes an inner blade and an outer blade, and cuts the wrinkles and the like by reciprocating or rotating the inner blade with respect to the outer blade that hits the user's skin.
In order to effectively shave a wrinkle or the like, it is desired that the head portion be applied to the skin surface at a right angle. Thus, an electric razor has been proposed in which the head portion can be tilted back and forth and from side to side with respect to the main body case (see, for example, Patent Document 1).

JP 2002-325984 A (full text)

  The above-mentioned electric razor only tilts the head part back and forth and left and right. For example, when shaving from the jaw to the cheek, adjust the head part by twisting your wrist so that the head part is parallel to the skin. There was a need to do.

  An object of the present invention is to provide an electric razor that not only tilts the head part back and forth and right and left with respect to the main body case, but also supports the head part rotatably and keeps the head part perpendicular to the skin. It is.

In order to solve the above problems, the electric razor of the present invention is:
In an electric razor comprising a head portion having an inner blade and an outer blade at the upper end of the main body case gripped by the user, the head portion having a driving means for driving the inner blade,
The head portion was supported so as to be able to tilt and rotate back and forth and from side to side with respect to the main body case.

  By supporting the head part so as to be rotatable with respect to the main body case, the head part rotates and follows the skin in parallel without twisting the wrist itself so that the head part is parallel to the skin. Furthermore, since the head portion tilts back and forth and to the left and right with respect to the main body case, the head portion can be brought into close contact with the skin at right angles, and effective shaving without leaving a shaving can be performed.

  The present invention is characterized in that the head portion (40) is attached to the main body case (20) so as to be tiltable forward and backward and left and right and rotatable. Therefore, the configuration and number of the inner cutter (50) and outer cutter (58) described below, the driving method and driving direction of the inner cutter (50) are merely examples, and various configurations can be adopted.

  As shown in FIGS. 1 and 2, the electric razor (10) according to the present invention is attached to a body case (20) gripped by a user and to the body case (20) so as to be tiltable forward and backward and left and right and rotatable. With a head part (40).

As shown in FIGS. 1 and 2, the main body case (20) is formed mainly of a resin cylindrical housing (22) that is formed in an oblong shape so that the user can easily grip it, and whose upper portion is curved outward. Composed.
The housing (22) is formed in a hollow cylindrical shape that is open at the top and bottom, and the upper and lower ends of the housing (22) are closed by lids (24) and (26) through waterproof seals (90) and (92), respectively. It is. Between the lids (24) and (26), there is formed a bearing recess (60) that supports the head portion (40) so as to be tiltable forward and backward and to the left and right, and is rotatable, and accommodates the battery (80) below. An internal frame (30) in which a part (32) is formed is provided.
The housing (22) is provided with a power switch and a light (not shown) indicating the remaining battery level by a user operation.

As shown in FIG. 1, FIG. 2 and FIG. 3, the upper lid (24) has a substantially rectangular opening (25) in the center, and the upper edge of the opening (25) A pleated flexible packing (94) (see FIG. 1 and FIG. 2) for preventing water from penetrating into the blade frame mounting base (54) of the head section (40) described later in a liquid-tight manner doing.
As shown in FIG. 1, the lower lid (26) is formed with a recess (27) in which the electric contact (82) for charging is exposed at the center, and the lower end of the housing (22) is the lower lid (26). ).

The inner frame (30) is screwed to the upper and lower lids (24) and (26) and is integrally connected to the housing (22).
The inner frame (30) has a cavity (34) through which the head portion (40) penetrates in the upper side, and the inner surface of the cavity (34) has a spherical curved surface as shown in FIGS. Bearing recesses (60) (60) are attached. In the illustrated embodiment, the bearing recesses (60) (60) are provided on the left and right sides of the inner frame (30). As will be described later, the bearing recesses (60) and (60) sandwich the bearing protrusions (62) of the head part (40) and support the head part (40) so that it can tilt and rotate back and forth and from side to side. ing.

  Below the bearing recess (60), as shown in FIGS. 2 and 5, a recess (36) for accommodating a spring means (68) for returning the head portion (40) to a predetermined angle opens inward. Is provided.

A battery housing part (32) for housing a rechargeable battery (80) is formed slightly below the center of the inner frame (30).
The battery (80) is electrically connected to the electrical contact (82) of the lower lid (26) .When the electric razor (10) is attached to a charging stand (not shown), the electrical contact ( 82) can be charged.

As shown in FIGS. 1 and 2, the head portion (40) is arranged such that the inner blades (50) and (50) can reciprocate with respect to the outer blade (58), and the driving means ( 70), the motor (72) is housed in the head frame (44).
The head frame (44) is a resin frame having recesses (45) and (46) formed on the upper and lower sides, respectively, and a motor (72) is accommodated in the lower recess (46). The motor (72) has a rotating shaft (73) protruding into the upper recess (45), and is connected to a crank mechanism (75) including an eccentric cam provided in the upper recess (45).
The crank mechanism (75) is connected to the front and rear two rows of inner blade mounting shafts (74) and (74) protruding from the upper surface of the upper recess (45). The blade mounting shafts (74) and (74) are reciprocated with a 180 ° phase shift in a known manner.

  The inner blades 50 and 50 are attached to the inner blade mounting shafts 74 and 74 in a state in which the inner blades 50 and 50 are spring-biased upward, respectively. The inner blade (50) can be configured by attaching a plurality of semicircular small blades (52) to the upper surface of the inner blade base (51) fitted to the inner blade mounting shaft (74).

The inner blades (50) and (50) are formed by a blade frame mounting base (54) attached to the outer periphery of the upper end of the head frame (44) and a blade frame (56) that can be attached to and detached from the blade frame mounting base (54). Is contained in a designated space.
The blade frame (56) is provided with outer blades (58) and (58) for cutting a scissors or the like in cooperation with the inner blades (50) and (50) so as to be tiltable forward and backward and left and right. The outer cutters (58) and (58) are formed by bending a thin metal plate having a large number of small holes into a U shape, and are covered with the peripheral surfaces of the inner cutters (50) and (50).

  The motor (72) has a lead (86) extending from an electric contact (84) at the lower end, and the lead (86) is electrically connected to the battery (80). The lead (86) has a length that allows the head portion (40) to tilt and rotate with respect to the main body case (20), and the lower end of the motor (72) and the lead (86) are flexible. Surrounded by a sex hose (88) and kept liquid tight.

  On the outer periphery of the lower recess (46) of the head frame (44), a bearing protrusion (62) that fits into the bearing recess (60) is formed. As shown in FIGS. 1 and 4, the left and right side surfaces of the bearing convex portion (62) are formed in a spherical shape, and the bearing concave portion (60) can be tilted and rotated forward and backward and left and right.

  As shown in FIGS. 2 and 5, the other end of the spring means (68) having one end connected to the inner frame (30) is attached to the lower side of the bearing convex portion (62). A plurality of spring means (68) are provided on the outer periphery of the head frame (44) to prevent the head portion (40) from wobbling and when the head portion (40) tilts or rotates along the skin surface. The part (40) is brought into close contact with the skin surface. When the load on the head part (40) is removed, the head part (40) is returned to a predetermined angle.

The tilting and rotating operation of the head portion (40) of the electric razor (10) having the above configuration will be described.
FIGS. 6 to 8 are simplified illustrations of the support structure of the main body case (20) and the head portion (40) for easy understanding of the tilting and rotating operation of the electric razor (10) of the present invention. is there.
Since the head part (40) is tiltably and rotatably connected to the main body case (20) by the bearing concave part (60) and the bearing convex part (62), as shown in FIG. The whole of 40) tilts left and right. Further, as shown by an arrow R in FIG. 6, the entire head portion (40) rotates around the rotation center P. Further, as shown in FIGS. 7 and 8, the entire head portion (40) tilts back and forth.
In the case of the illustrated embodiment, it is possible to tilt about 10 ° at the maximum on the left and right, about 7 ° in the front direction, and about 5 ° in the rear direction. Further, in the rotation direction, each can rotate about 15 ° clockwise and counterclockwise.

  As described above, the electric razor (10) of the present invention is not only tilted forward and backward and left and right, but also rotatable relative to the main body case (20). Even if the electric razor (10) is not tilted or twisted along undulations or curved surfaces, the head part (40) always follows to keep it at right angles to the skin surface, so there is no effect of leaving unshaved. Shave.

  The present invention is useful not only for tilting the head part back and forth and right and left, but also rotating relative to the main body case, so that the head part is always in close contact with the skin surface at a right angle, and is useful as an electric razor without shaving.

It is a longitudinal cross-sectional view of the electric razor of this invention. It is sectional drawing which follows the line AA of FIG. It is a cross-sectional view which follows the line BB of FIG. It is a cross-sectional view along line CC in FIG. It is a cross-sectional view along line DD in FIG. It is explanatory drawing of the left-right tilting and rotation operation | movement of the head part of the electric razor of this invention. It is explanatory drawing of the forward tilting operation | movement of the head part of the electric razor of this invention. It is explanatory drawing of back tilting operation | movement of the head part of the electric razor of this invention.

Explanation of symbols

(10) Electric razor
(20) Main unit case
(40) Head
(60) Bearing recess
(62) Bearing protrusion

Claims (3)

The upper part of the body case (20) gripped by the user is provided with a head part (40) having an inner blade (50) and an outer blade (58). The head part (40) is driven by the inner blade (50). In an electric razor comprising driving means (70) for
The head razor is an electric razor characterized in that the head portion (40) is supported so as to be tiltable and rotatable in the front-rear and left-right directions with respect to the main body case (20). The body case (20) has a bearing recess (60) whose inner surface has a spherical curved surface,
The electric razor according to claim 1, wherein the head portion (40) includes a bearing convex portion (62) fitted into the bearing concave portion (60) and having an outer surface shape of a spherical curved surface.   Inside the main body case (20), one end is supported by the main body case (20), the other end is connected to the head portion (40), and the head portion (40) is at a predetermined angle with respect to the main body case (20). 3. An electric razor according to claim 1 or 2, comprising spring means (68) for returning.

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