WO2010035728A1 - Electric shaver, and electromagnetic actuator - Google Patents

Electric shaver, and electromagnetic actuator Download PDF

Info

Publication number
WO2010035728A1
WO2010035728A1 PCT/JP2009/066475 JP2009066475W WO2010035728A1 WO 2010035728 A1 WO2010035728 A1 WO 2010035728A1 JP 2009066475 W JP2009066475 W JP 2009066475W WO 2010035728 A1 WO2010035728 A1 WO 2010035728A1
Authority
WO
WIPO (PCT)
Prior art keywords
reciprocating
salient poles
stator
mover
magnetic
Prior art date
Application number
PCT/JP2009/066475
Other languages
French (fr)
Japanese (ja)
Inventor
俊治 橋本
真二 末松
浩幸 亀岡
茂俊 佐近
渉 実松
憲二 成田
敏 中山
Original Assignee
パナソニック電工 株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by パナソニック電工 株式会社 filed Critical パナソニック電工 株式会社
Publication of WO2010035728A1 publication Critical patent/WO2010035728A1/en

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B19/00—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers
    • B26B19/02—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers of the reciprocating-cutter type
    • B26B19/04—Cutting heads therefor; Cutters therefor; Securing equipment thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B19/00—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers
    • B26B19/28—Drive layout for hair clippers or dry shavers, e.g. providing for electromotive drive
    • B26B19/282—Motors without a rotating central drive shaft, e.g. linear motors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B19/00—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers
    • B26B19/28—Drive layout for hair clippers or dry shavers, e.g. providing for electromotive drive
    • B26B19/288—Balance by opposing oscillation

Definitions

  • the present invention relates to an electric razor, and more particularly, to a reciprocating electromagnetic actuator for an electric razor.
  • the reciprocating electromagnetic actuator is disposed in the head portion of the electric razor.
  • the reciprocating electromagnetic actuator includes a stator fixed in the head portion of the electric razor and a mover supported so as to reciprocate in the head portion of the electric razor.
  • the stator is, for example, an electromagnet, and has a mover, such as a permanent magnet.
  • the mover supports the inner blade.
  • the inner blade is covered with a mesh-shaped outer blade mounted on the head portion.
  • the mover reciprocates (linear drive) by energizing the stator. Body hair such as a heel is introduced into the head part through the stitches of the outer blade, and is shaved with the outer blade and the inner blade.
  • An object of the present invention is to provide an electric razor and an electromagnetic actuator that can improve the shaving performance and improve the shaving performance.
  • One aspect includes a head portion that is tiltably connected to a gripping portion, an inner blade that is reciprocally provided in the head portion, and an outer blade that is provided on the head portion so as to cover the inner blade
  • an electric razor including an electromagnetic actuator for reciprocating the inner blade.
  • the electromagnetic actuator is configured to support the inner blade and move the inner blade back and forth in the reciprocating direction, a stator core including a plurality of salient poles arranged side by side in the reciprocating direction, And a stator including a coil wound around at least one of the salient poles.
  • a magnetic path at a boundary between the movable element and the stator is shifted in a direction orthogonal to the reciprocating direction in at least one of the plurality of salient poles. While generating the driving force for reciprocating the child in the reciprocating direction, the driving force for driving the movable element in the orthogonal direction is generated periodically.
  • the inner blade reciprocates with the reciprocating movement of the mover, so that the inner blade and the outer blade are cut off the wrinkles and the like, and the direction orthogonal to the reciprocating direction acting on the mover It is possible to periodically reciprocate the head part through the movable element with the driving force, and this is the same as changing the shaving direction of the electric razor. It becomes easy to be introduced into the outer blade, the introduction rate is increased, and the shaving performance is improved.
  • At least one of the leading end surface of each salient pole and the magnetic action portion of the mover facing the leading end surface is provided with a convex portion for shifting the magnetic path.
  • the shaving performance can be improved with an easy response by simply providing a convex portion on the mover.
  • the convex portion is a separate member from the stator core. According to this configuration, it is possible to improve shaving performance by adding a convex portion to an existing stator or movable element that does not have a convex portion. Further, the convex portion where the magnetic flux is concentrated can be constituted by, for example, compression molding of magnetic metal powder capable of reducing eddy current loss, or can be constituted by laminating a plurality of core materials made of magnetic metal.
  • the plurality of salient poles are three salient poles including two end-side salient poles positioned at both ends in the reciprocating direction and a central salient pole positioned in the center in the reciprocating direction, The magnetic paths of the two end salient poles are shifted to one side in the orthogonal direction, and the magnetic paths of the central salient poles are shifted to the other side in the orthogonal direction.
  • the shift amount of the magnetic path at the boundary between the mover and the stator can be increased within a limited range, and the force in the direction perpendicular to the reciprocating direction received by the mover can be efficiently generated. It becomes possible.
  • the magnetic action portion of the mover facing the tip surface of each salient pole includes a permanent magnet. According to this configuration, even if the amount of magnetic flux (current) generated on the stator side is suppressed, a desired driving force can be obtained by the permanent magnet included in the magnetic action portion of the mover.
  • the number of the stators is one
  • the number of the movable elements is two
  • the two movable elements each include a magnetic action unit including permanent magnets arranged in opposite polarities
  • the two movable elements are Reciprocated in opposite phase.
  • the two magnetic paths formed at the boundary between the two movers and the stator are shifted so as to be line symmetric with respect to the two movers.
  • a spring member for resonating the mover is further provided.
  • the stator core is a compression molded body of magnetic metal powder.
  • an eddy current loss can be suppressed sufficiently small, and an electromagnetic actuator excellent in magnetic efficiency can be configured. Further, since the stator core can be molded, the degree of freedom of the shape of the stator core is high.
  • the stator core is a laminate of a plurality of core layers made of a magnetic metal. According to this configuration, an eddy current loss can be suppressed sufficiently small, and an electromagnetic actuator excellent in magnetic efficiency can be configured. Further, since the core layer can be formed by pressing the metal plate, it can contribute to cost reduction of the stator core.
  • At least one of the movable element capable of reciprocating in the reciprocating direction the stator core including a plurality of salient poles arranged side by side in the reciprocating direction, and the plurality of salient poles.
  • An electromagnetic actuator comprising a stator including a wound coil is provided. In the electromagnetic actuator, a magnetic path at a boundary portion between the movable element and the stator is shifted in a direction orthogonal to the reciprocating direction in at least one of the plurality of salient poles. The driving force for driving the movable element in the orthogonal direction is periodically generated while generating the driving force for reciprocating in the reciprocating direction.
  • An electromagnetic actuator having this configuration is preferably used as a drive source for an electric razor.
  • FIG. 1 It is a perspective view of the electric razor of one Embodiment.
  • (A) is a perspective view of an electromagnetic actuator
  • (b) is a top view for demonstrating the overlap of a stator and a needle
  • A) is a perspective view which shows the more concrete structure of a needle
  • (b) (c) is a perspective view which shows the modification.
  • the electric razor 11 of this embodiment includes a grip portion 12 that can be gripped by a user, and a head portion 13 connected to the upper portion of the grip portion 12.
  • the head unit 13 can tilt with two degrees of freedom, for example.
  • the head unit 13 includes a plurality of blade blocks 14a to 14c and an electromagnetic actuator 15.
  • An operation switch 16 is provided on the outer surface of the grip portion 12.
  • a battery and a drive circuit are provided inside the grip portion 12.
  • the electromagnetic actuator 15 is supplied with a drive current (alternating current) generated by the drive circuit based on an ON operation of the operation switch 16 of the grip portion 12.
  • a pair of knitted blade blocks 14a and 14b and a slit blade block 14c are arranged on the upper portion of the head portion 13.
  • the knitted blade blocks 14a and 14b include inner blades 22a and 22b and mesh-shaped outer blades 21a and 21b that cover the inner blades 22a and 22b, respectively.
  • the slit blade block 14c is disposed between the stitch blade blocks 14a and 14b.
  • the slit blade block 14c includes a slit outer blade 21c and an inner blade (not shown).
  • These blade blocks 14a to 14c are arranged side by side in a direction (Y in FIG. 1) perpendicular to the longitudinal direction (X in FIG. 1) of the blade blocks 14a, 14b, and 14c, and are arranged on the top of the head portion 13. . That is, the illustrated electric razor 11 is a so-called three-blade type.
  • the outer blades 21 a to 21 c of the blade blocks 14 a to 14 c are integrated as an outer blade cassette 23.
  • the outer blade cassette 23 can be attached to and detached from the upper portion of the head housing 24.
  • the inner blades 22 a and 22 b can reciprocate at the top of the head portion 13.
  • the inner blades 22a and 22b are preferably urged so as to press the inner surfaces of the mesh outer blades 21a and 21b, respectively.
  • the inner blades 22a and 22b are reciprocated in the outer blades 21a and 21b by driving the electromagnetic actuator 15 (see arrow X in FIG. 1).
  • “reciprocating direction X” refers to the direction of reciprocating movement of the inner blades 22 a and 22 b
  • “orthogonal direction Y” refers to the direction orthogonal to the reciprocating direction X.
  • the inner blade (not shown) of the slit blade block 14c is drivingly connected to a mover (for example, member number 32a in FIG. 2) that drives one inner blade (for example, the inner blade 22a) of the blade blocks 14a and 14b. It may be interlocked with one inner blade.
  • a mover for example, member number 32a in FIG. 2 that drives one inner blade (for example, the inner blade 22a) of the blade blocks 14a and 14b. It may be interlocked with one inner blade.
  • the electromagnetic actuator 15 includes one stator 31 and movers 32a and 32b corresponding to the inner blades 22a and 22b, respectively.
  • the stator 31 is fixed in the head housing 24.
  • the movers 32a and 32b are movable in the reciprocating direction X.
  • the movers 32 a and 32 b may be supported by the head housing 24.
  • the stator 31 includes a stator core 33 including a plurality of salient poles 33a to 33c, and a coil 34.
  • the plurality of salient poles 33a to 33c are arranged side by side in the reciprocating direction X.
  • the stator core 33 is E-shaped and includes three salient poles 33a to 33c.
  • the salient poles 33a and 33c may be called end salient poles, and the salient pole 33b may be called central salient poles.
  • the lower ends of the plurality of salient poles 33a to 33c are connected to each other, and the tips of the salient poles 33a to 33c face upward.
  • a coil 34 is wound around a salient pole 33b located in the center.
  • Each of the salient poles 33a to 33c of the stator core 33 has a rectangular column shape having an elongated rectangular cross section, the short side of the cross section extends in the reciprocating direction X, and the long side of the cross section extends in the orthogonal direction Y. ing.
  • the tip side of the salient poles 33a to 33c is a region A1 for driving the movable element 32a and a region A2 for driving the movable element 32b. It is divided into and.
  • a pair of convex portions 33x are provided on the tip surfaces of the salient poles 33a to 33c.
  • a gap having a width corresponding to one of the convex portions 33x is provided between the pair of convex portions 33x.
  • Each convex portion 33x has a rectangular column shape having an elongated rectangular cross section, the long side of the cross section extends in the reciprocating direction X, and the short side of the cross section extends in the orthogonal direction Y.
  • the outer convex portion 33x located farther from the central bisector L1 continues to the outer edge in the orthogonal direction Y of the salient pole.
  • the outer convex portion 33x located farther from the central bisector L1 is shifted inward by one width of the convex portion 33x from the outer edge in the orthogonal direction Y of the salient pole. It is provided at a position (that is, a position close to the central bisector L1).
  • the projecting portion 33x of the salient pole 33a and the projecting portion 33x of the salient pole 33c are aligned with each other along the reciprocating direction X, but the projecting portion 33x on the tip surface of the center salient pole 33b is projected at both ends.
  • Each of the poles 33a and 33c is shifted inward from the convex portion 33x by one width of the convex portion 33x.
  • each of the salient poles 33a and 33c at both ends of the region A2 has an outer convex portion 33x continuous to the outer edge in the orthogonal direction Y of the salient pole and an inner side with a gap corresponding to one width of the convex portion 33x.
  • an inner convex portion 33x is included in The center salient pole 33b.
  • the center salient pole 33b includes an outer convex portion 33x provided at a position shifted inward by one width of the convex portion 33x from the outer edge in the orthogonal direction Y of the salient pole, and one width of the convex portion 33x.
  • an inner convex portion 33x provided on the inner side with a gap.
  • the stator core 33 may be a laminate of a plurality of core layers 33y made of a magnetic metal such as SPCC (cold rolled steel plate) as shown in FIG.
  • the stator core 33 may be a compression molded body of magnetic metal powder.
  • the stator core 33 may be configured by cutting a magnetic metal block.
  • a pair of convex portions 33x is provided in each of the regions A1 and A2 on the tip surfaces of the salient poles 33a to 33c.
  • one convex portion 33x may be provided in each of the regions A1 and A2.
  • the convex portions 33x of the salient poles 33a and 33c at both ends in the example of FIG. 3 are provided at the outer edge portion in the orthogonal direction Y, whereas the convex portion 33x of the central salient pole 33b is the outer edge portion. Is provided at a position displaced inward by a predetermined amount.
  • the operation of the stator 31 will be described. While an alternating current for driving is supplied from a drive circuit (not shown) to the coil 34 wound around the central salient pole 33b, the polarity of the tip of the salient pole 33b changes periodically. On the other hand, the polarities of the tips of the salient poles 33a and 33c at both ends periodically change with a phase opposite to that of the central salient pole 33b. In this way, the salient poles 33a to 33c generate an alternating magnetic field. The magnetic flux between the salient poles 33a to 33c and the movers 32a and 32b intensively passes through the convex portion 33x.
  • the movers 32a and 32b are associated with the areas A1 and A2 of the stator 31, respectively.
  • the movable elements 32a and 32b are provided with magnetic action portions 35a and 35b facing the tip surfaces of the salient poles 33a to 33c of the stator 31, respectively.
  • the stator 31 (particularly the salient poles 33a to 33c) and the movers 32a and 32b (particularly the magnetic action portions 35a and 35b) form a magnetic path.
  • the reciprocating motion of the movers 32a and 32b is obtained by an alternating magnetic field generated by the stator 31.
  • the reciprocating direction X may be referred to as the longitudinal direction.
  • the orthogonal direction Y may be referred to as the width direction.
  • the dimension (length) of the magnetic action portions 35a and 35b in the reciprocating direction X extends over the salient poles 33a to 33c of the stator core 33, but the stator core in the reciprocating direction X. It is slightly shorter than the dimension (length) of 33.
  • the dimension (width) of the magnetic acting portions 35a and 35b in the orthogonal direction Y is the dimension of the formation region of the pair of convex portions 33x in the orthogonal direction Y (that is, between the width of the two convex portions 33x and the convex portion 33x). The sum of the gap distance).
  • Each of the magnetic acting portions 35a and 35b includes a rectangular plate-shaped base portion 35y and convex portions 35x provided at both ends in the width direction of the lower surface of the base portion 35y.
  • the width of each convex portion 35 x is the same as that of the convex portion 33 x of the stator core 33.
  • the length of each convex part 35x is the same as the length of the base part 35y.
  • variety for one convex part 35x is provided.
  • FIG. 2B in each of the regions A1 and A2, the centers of the convex portions 33x outside the salient poles 33a and 33c of the stator core 33 and the convex portions 33x inside the central salient pole 33b are centered.
  • a center line L2 is shown through.
  • the movers 32a and 32b are arranged so that the center points in the width direction of the magnetic action portions 35a and 35b are located on the center line L2.
  • the inner blades 22a and 22b are detachably connected to the movers 32a and 32b.
  • the base portion 35y is made of a magnetic metal and functions as a back yoke.
  • the convex portion 35 x is constituted by a permanent magnet 36.
  • the permanent magnet 36 has a magnetic pole boundary in the center of the reciprocating direction X, and has different magnetic poles on both sides of the boundary.
  • the permanent magnets 36 of the movers 32a and 32b are arranged with the same polarity.
  • the permanent magnet 36 of the mover 32a and the permanent magnet 36 of the mover 32b are arranged with opposite polarities.
  • the base portions 35y of the magnetic action portions 35a and 35b are constituted by permanent magnets 36.
  • the convex portion 35x is made of a magnetic metal.
  • the base portions 35 y and the convex portions 35 x of the magnetic action portions 35 a and 35 b are both constituted by permanent magnets 36.
  • the permanent magnets 36 of the movers 32a and 32b are arranged with opposite polarities.
  • the spring member 37a may be connected to both ends of the movable elements 32a and 32b in the reciprocating direction X, and the spring member 37b may be connected to both ends of the movable elements 32a and 32b in the orthogonal direction Y.
  • the spring constant of the spring member 37a is set to a value that resonates with the reciprocation of the movers 32a and 32b, the driving force for reciprocating the movers 32a and 32b can be reduced.
  • spring members 37a and 27b may be coupled to the magnetic action portions 35a and 35b.
  • the operation of the electromagnetic actuator 15 will be described. As shown in FIG. 2, when an alternating current flows through the coil 34 of the stator 31, the polarity of the tip of the central salient pole 33b and the polarity of the tip of the salient poles 33a, 33c are periodically reversed in phase. Change.
  • the magnetic field change accompanying the change in polarity acts on the magnetic action portions 35a and 35b of the movers 32a and 32b, whereby the movers 32a and 32b reciprocate. Since the permanent magnets 36 of the movers 32a and 32b are arranged with opposite polarities, the movers 32a and 32b reciprocate in opposite phases, and the inner blades 22a and 22b reciprocate.
  • the heel introduced into the stitches of the outer blades 21a and 21b is sandwiched and cut between the inner blades 22a and 22b and the outer blades 21a and 21b, and the heel is shaved off.
  • the scissors introduced into the slit-shaped outer blade 21c are shaved off by the reciprocating motion of the inner blade (not shown) interlocked with the mover 32a or 32b.
  • Arc-shaped driving forces F1 and F2 act on the movers 32a and 32b, respectively.
  • Each arcuate driving force F1, F2 has a driving force in the reciprocating direction X (also referred to as a reciprocating direction component) and a driving force in the orthogonal direction Y (also referred to as an orthogonal direction component).
  • the arcuate driving forces F1 and F2 are directed outward in the orthogonal direction Y from the central salient pole 33b of the stator 31 toward the salient poles 33a and 33c at both ends.
  • the movable elements 32a and 32b (inner blades 22a and 22b) reciprocate in opposite phases by the reciprocating direction components of the driving forces F1 and F2, and the movable elements 32a and 32b (inner blade 22a) by the orthogonal components of the driving forces F1 and F2. , 22b) are biased in the opposite direction in the orthogonal direction Y.
  • the reciprocating motion of the movable elements 32a and 32b by the driving forces F1 and F2 having orthogonal direction components causes the head portion 13 to move minutely around an axis perpendicular to the XY plane and passing through the center point of the outer blades 21a to 21c. Periodically reciprocates within an angular range.
  • the reciprocating rotation of the head portion 13 has the same effect as changing the shaving direction of the electric razor 11 in various ways.
  • the wrinkles or the like facing in various directions are easily introduced into the stitches of the outer blades 21a to 21c, the introduction rate is increased, and the shaving performance of the electric shaver 11 is improved.
  • the convex portions 33x of the salient poles 33a to 33c constituting the magnetic path at the boundary between the movers 32a and 32b and the stator 31 are provided so as to be shifted in the direction orthogonal to the reciprocating direction. ing.
  • the electromagnetic actuator 15 of the electric razor 11 generates driving forces F1 and F2 each having a driving force in the reciprocating direction and a periodic driving force in the orthogonal direction to reciprocate the movers 32a and 32b. .
  • a wrinkle etc. can be cut
  • the head unit 13 periodically reciprocates by the driving force in the orthogonal direction transmitted to the head unit 13 through the movers 32a and 32b. Since this rotation has the same effect as changing the shaving direction of the electric razor 11, it is easy to introduce wrinkles or the like facing in various directions into the outer blades 21 a and 21 b, and the introduction rate is high. Therefore, the shaving performance can be improved.
  • the magnetic path can be shifted by the convex portion 33x provided on the tip surface of the salient poles 33a to 33c of the stator 31.
  • the shaving performance can be improved by an easy structural change by simply providing the convex portion 33x on the conventional stator.
  • the plurality of salient poles of the stator 31 include two end salient poles 33a and 33c located at both ends of the reciprocating direction X, and a central salient located at the center in the reciprocating direction X. There are three salient poles comprising the pole 33b.
  • the magnetic paths of the two end-side salient poles 33a and 33c are shifted to one side in the orthogonal direction Y, and the magnetic path of the central salient pole 33b is offset to the other side in the orthogonal direction Y.
  • the shift amount of the magnetic path at the boundary between the movers 32a and 32b and the stator 31 can be increased within a limited range, and the force in the direction orthogonal to the reciprocating direction received by the movers 32a and 32b can be generated efficiently. Can be made.
  • two movers 32 a and 32 b are provided for one stator 31, the permanent magnets 36 of the movers 32 a and 32 b are arranged with opposite polarities, and the movers 32 a and 32 b are Reciprocates in opposite phase.
  • the convex portions 33x of the salient poles 33a to 33c are even line-symmetric between the regions A1 and A2 corresponding to the movers 32a and 32b, respectively.
  • stator core 33 of the present embodiment By configuring the stator core 33 of the present embodiment with a laminated body of the core layer 33y made of magnetic metal, the eddy current loss can be suppressed sufficiently small, and the electromagnetic actuator 15 having excellent magnetic efficiency is configured. can do. In addition, since each core layer 33y can be formed by pressing a metal plate, the stator core 33 having this configuration can contribute to cost reduction. Further, if the stator core 33 is configured by compression molding of magnetic metal powder, eddy current loss can be suppressed sufficiently small, and the electromagnetic actuator 15 having excellent magnetic efficiency can be configured. The configured stator core 33 has a high degree of freedom in its shape.
  • the convex portion 33x formed on the salient poles 33a and 33c at both ends in the reciprocating direction X and the convex portion 33x formed on the salient pole 33b at the intermediate position in the reciprocating direction X are controlled amounts. Shifted in the orthogonal direction Y.
  • the convex portions 33x formed on the salient poles 33a and 33c at both ends are shifted outward in the orthogonal direction Y from the convex portion 33x formed on the salient pole 33b at the intermediate position.
  • orthogonal components having opposite phases are applied to the driving forces F1 and F2, and the rotational moment acting on the head portion 13 increases. Therefore, the shaving performance of the electric razor 11 is improved.
  • the convex portion 33x and the stator core 33 are integrally formed.
  • the convex portion 33x may be a separate member from the stator core 33, and may be joined or bonded.
  • the convex portion 33x may be fixed to the stator core 33.
  • the effect of this invention can be acquired by the change of adding the convex part 33x to the conventional stator.
  • the convex part 33x can also be produced by a technique different from the technique for producing the stator core 33.
  • the convex portion 33x where the magnetic flux concentrates can be configured by compression molding of magnetic metal powder that can reduce eddy current loss, for example.
  • the convex portion 33x of the tip surface of the salient poles 33a to 33c of the stator 31 is shifted in the orthogonal direction Y.
  • the magnetic action portions 35a and 35b of the movers 32a and 32b The convex portion 35x may be shifted in the orthogonal direction Y.
  • the convex portions 35x in which the magnetic acting portions 35a and 35b are shifted function as convex portions that shift the magnetic path at the boundary between the mover and the stator. Or you may shift both the convex part 33x of the stator 31, and the convex part 35x of the needle
  • the convex portions 33x of the salient poles 33a and 33c located at both ends are shifted to one side in the orthogonal direction Y, and the convex portion 33x of the salient pole 33c located in the center is shifted to the other side in the orthogonal direction Y.
  • the present invention is not limited to this, and a mode in which the convex portion 33x of at least one of the salient poles 33a to 33c is shifted may be employed.
  • the convex portion 33x is provided on the tip surface of the salient poles 33a to 33c so as to shift the magnetic path at the boundary between the movers 32a and 32b and the stator 31 in the orthogonal direction Y.
  • the part 33x may be eliminated, and the salient poles 33a to 33c themselves may be shifted in the orthogonal direction Y.
  • the tip surfaces of the salient poles 33a to 33c function as convex portions that shift the magnetic path at the boundary between the mover and the stator.
  • the permanent magnet 36 is used for the magnetic action portions 35a and 35b of the movers 32a and 32b.
  • the present invention may be applied to a so-called reluctance type electromagnetic actuator using a magnetic metal that does not use the permanent magnet 36.
  • the magnetic action portions 35a and 35b are manufactured by a laminated body of core layers made of magnetic metal, magnetic metal powder molding, magnetic metal block cutting, or the like.
  • reluctance convex portions may be provided in the reciprocating direction X at predetermined intervals.
  • the stator 31 is configured by winding the coil 34 around the center salient pole 33b.
  • the coil 34 may be wound around the salient poles 33a and 33c at both ends.
  • the pair of movers 32a and 32b is driven by one stator 31, but a plurality of stators corresponding to the respective movers 32a and 32b may be used.
  • the electric razor 11 is a so-called three-blade type having three outer blades 21a to 21c.
  • the electric razor 11 is a single-blade, two-blade, four-blade or more. There may be.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dry Shavers And Clippers (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)

Abstract

Disclosed is an electromagnetic actuator (15) for an electric shaver, which comprises: movable elements (32a and 32b) made reciprocally movable in reciprocating directions (X); and a stator (31) including a stator core (33) having plural salient poles (33a to 33c) arrayed in the reciprocating directions, and a coil (34) wound on at least one of the salient poles.  The magnetic path of a boundary portion between the movable elements and the stator is shifted in directions (Y) orthogonal to the reciprocating directions in at least one of the salient poles.  As a result, the electromagnetic actuator periodically generates driving forces for driving the movable elements in the orthogonal directions while generating driving forces for reciprocating the movable elements in the reciprocating directions.

Description

電気かみそり及び電磁アクチュエータElectric razor and electromagnetic actuator
　本発明は、電気かみそりに関し、特に、電気かみそり用の往復式電磁アクチュエータに関する。 The present invention relates to an electric razor, and more particularly, to a reciprocating electromagnetic actuator for an electric razor.
　往復式電磁アクチュエータを用いる電気かみそりは、例えば特許文献１に提案されている。往復式電磁アクチュエータは電気かみそりのヘッド部内に配置される。往復式電磁アクチュエータは、電気かみそりのヘッド部内に固定された固定子と、電気かみそりのヘッド部内で往復動可能に支持された可動子とを含む。固定子は例えば電磁石であり、可動子例えば永久磁石を有する。可動子は内刃を支持する。内刃はヘッド部に装着される網目状の外刃に覆われる。固定子への通電により可動子が往復動（リニア駆動）を行う。髭のような体毛は外刃の編み目を介してヘッド部内に導入されて、外刃と内刃とで剃られる。 An electric razor using a reciprocating electromagnetic actuator is proposed in Patent Document 1, for example. The reciprocating electromagnetic actuator is disposed in the head portion of the electric razor. The reciprocating electromagnetic actuator includes a stator fixed in the head portion of the electric razor and a mover supported so as to reciprocate in the head portion of the electric razor. The stator is, for example, an electromagnet, and has a mover, such as a permanent magnet. The mover supports the inner blade. The inner blade is covered with a mesh-shaped outer blade mounted on the head portion. The mover reciprocates (linear drive) by energizing the stator. Body hair such as a heel is introduced into the head part through the stitches of the outer blade, and is shaved with the outer blade and the inner blade.
特開平７－２６５５６０号公報JP-A-7-265560
　髭は様々な方向を向いて生えているため、髭剃りしたい使用者は、電気かみそりを肌上で様々な方向に移動させて、外刃の編み目内に髭を導入させる必要があった。
　本発明の目的は、髭の導入率を向上可能で、剃り性能を向上可能な電気かみそり及び電磁アクチュエータを提供することにある。 Since the heel grows in various directions, the user who wants to shave has to move the electric razor in various directions on the skin to introduce the heel into the stitches of the outer blade.
An object of the present invention is to provide an electric razor and an electromagnetic actuator that can improve the shaving performance and improve the shaving performance.
　一態様は、把持部に対して傾動可能に連結されるヘッド部と、前記ヘッド部内に設けられた往復動可能な内刃と、前記内刃を覆うように前記ヘッド部に設けられた外刃と、前記内刃を往復動させる電磁アクチュエータとを含む電気かみそりを提供する。電磁アクチュエータは、前記内刃を支持し、前記内刃を往復動方向に往復動する可動子と、前記往復動方向に並んで配列された複数の突極を含む固定子コアと、前記複数の突極のうちの少なくとも一つに巻回されたコイルとを含む固定子とを含む。前記電磁アクチュエータは、前記可動子と前記固定子との境界部の磁気通路が、前記複数の突極のうちの少なくとも１つにおいて前記往復動方向の直交方向にずらされて、それにより、前記可動子を前記往復動方向に往復動する駆動力を生成しながら、前記可動子を前記直交方向に駆動する駆動力を周期的に生成するように構成されている。 One aspect includes a head portion that is tiltably connected to a gripping portion, an inner blade that is reciprocally provided in the head portion, and an outer blade that is provided on the head portion so as to cover the inner blade And an electric razor including an electromagnetic actuator for reciprocating the inner blade. The electromagnetic actuator is configured to support the inner blade and move the inner blade back and forth in the reciprocating direction, a stator core including a plurality of salient poles arranged side by side in the reciprocating direction, And a stator including a coil wound around at least one of the salient poles. In the electromagnetic actuator, a magnetic path at a boundary between the movable element and the stator is shifted in a direction orthogonal to the reciprocating direction in at least one of the plurality of salient poles. While generating the driving force for reciprocating the child in the reciprocating direction, the driving force for driving the movable element in the orthogonal direction is generated periodically.
　この構成によれば、可動子の往復動に伴って内刃が往復動して、内刃と外刃で髭等が切断されるのに加え、その可動子に作用する往復動方向と直交方向の駆動力にて該可動子を通じてヘッド部を周期的に往復回動させることが可能となり、これが電気かみそりの剃り方向を様々変化させたのと同様になるため、様々な方向を向く髭等が外刃内に導入され易くなってその導入率が高くなり、剃り性能が向上する。 According to this configuration, the inner blade reciprocates with the reciprocating movement of the mover, so that the inner blade and the outer blade are cut off the wrinkles and the like, and the direction orthogonal to the reciprocating direction acting on the mover It is possible to periodically reciprocate the head part through the movable element with the driving force, and this is the same as changing the shaving direction of the electric razor. It becomes easy to be introduced into the outer blade, the introduction rate is increased, and the shaving performance is improved.
　一例では、各突極の先端面及び当該先端面と対向する前記可動子の磁気作用部の少なくとも一方に、前記磁気通路をずらすための凸部が設けられている
　この構成によれば、固定子または可動子に凸部を設けるだけの容易な対応で、剃り性能の向上を実現可能である。 In one example, at least one of the leading end surface of each salient pole and the magnetic action portion of the mover facing the leading end surface is provided with a convex portion for shifting the magnetic path. Alternatively, the shaving performance can be improved with an easy response by simply providing a convex portion on the mover.
　一例では、前記凸部は、前記固定子コアと別部材である。
　この構成によれば、凸部を有さない既存の固定子又は可動子に凸部を追加することで、剃り性能の向上を実現可能である。また、磁束が集中する凸部を、例えば渦電流損を小さくできる磁性金属粉体の圧縮成形にて構成したり、磁性金属よりなるコア材の複数枚積層にて構成することも可能である。 In one example, the convex portion is a separate member from the stator core.
According to this configuration, it is possible to improve shaving performance by adding a convex portion to an existing stator or movable element that does not have a convex portion. Further, the convex portion where the magnetic flux is concentrated can be constituted by, for example, compression molding of magnetic metal powder capable of reducing eddy current loss, or can be constituted by laminating a plurality of core materials made of magnetic metal.
　一例では、　前記複数の突極は、前記往復動方向の両端にそれぞれ位置する２つの端側突極と、前記往復動方向において中央に位置する中央突極とからなる３つの突極であり、前記２つの端側突極の磁気通路は前記直交方向の一側にずれており、前記中央突極の磁気通路は前記直交方向の他側にずれている。 In one example, the plurality of salient poles are three salient poles including two end-side salient poles positioned at both ends in the reciprocating direction and a central salient pole positioned in the center in the reciprocating direction, The magnetic paths of the two end salient poles are shifted to one side in the orthogonal direction, and the magnetic paths of the central salient poles are shifted to the other side in the orthogonal direction.
　この構成によれば、可動子と固定子との境界部の磁気通路のずらし量を限られた範囲内で大きくでき、可動子が受ける往復動方向と直交方向の力を効率よく発生させることが可能となる。 According to this configuration, the shift amount of the magnetic path at the boundary between the mover and the stator can be increased within a limited range, and the force in the direction perpendicular to the reciprocating direction received by the mover can be efficiently generated. It becomes possible.
　一例では、各突極の先端面と対向する前記可動子の磁気作用部は永久磁石を含む。
　この構成によれば、固定子側で発生させる磁束量（電流）を抑えても、可動子の磁気作用部に含まれる永久磁石により所望の駆動力が得られる。 In one example, the magnetic action portion of the mover facing the tip surface of each salient pole includes a permanent magnet.
According to this configuration, even if the amount of magnetic flux (current) generated on the stator side is suppressed, a desired driving force can be obtained by the permanent magnet included in the magnetic action portion of the mover.
　一例では、前記固定子は一つであり、前記可動子は２つであり、前記２つの可動子は互いに逆極性で配列された永久磁石を含む磁気作用部を備え、前記２つの可動子は逆位相で往復動される。 In one example, the number of the stators is one, the number of the movable elements is two, the two movable elements each include a magnetic action unit including permanent magnets arranged in opposite polarities, and the two movable elements are Reciprocated in opposite phase.
　この構成によれば、２つの可動子の逆位相の往復動に相乗させて、可動子が受ける往復動方向と直交方向の力を効率よく発生させることが可能となる。
　一例では、前記２つの可動子と前記固定子との境界部にそれぞれ形成される２つの磁気通路は、前記２つの可動子で線対称となるようにずれている。 According to this configuration, it is possible to efficiently generate a force in a direction orthogonal to the reciprocating direction received by the mover in synergy with the reciprocal movement of the two movers in opposite phases.
In one example, the two magnetic paths formed at the boundary between the two movers and the stator are shifted so as to be line symmetric with respect to the two movers.
　この構成によれば、２つの可動子の逆位相の往復動に相乗させて、可動子が受ける往復動方向と直交方向の力を効率よく発生できる。
　一例では、前記可動子を共振させるためのバネ部材を更に備える。 According to this configuration, the force in the direction orthogonal to the reciprocating direction received by the mover can be efficiently generated in synergy with the reciprocal movement of the two movers in opposite phases.
In one example, a spring member for resonating the mover is further provided.
　この構成によれば、固定子側で発生させる磁束量（電流）を抑えても、可動子を共振させるバネ部材により、所望の駆動力が得られる。
　一例では、前記固定子コアは磁性金属粉体の圧縮成形体である。 According to this configuration, even if the amount of magnetic flux (current) generated on the stator side is suppressed, a desired driving force can be obtained by the spring member that resonates the mover.
In one example, the stator core is a compression molded body of magnetic metal powder.
　この構成によれば、渦電流損が十分に小さく抑えられ、磁気効率に優れた電磁アクチュエータを構成できる。また、固定子コアは成形可能であるから、固定子コアの形状の自由度は高い。 According to this configuration, an eddy current loss can be suppressed sufficiently small, and an electromagnetic actuator excellent in magnetic efficiency can be configured. Further, since the stator core can be molded, the degree of freedom of the shape of the stator core is high.
　一例では、前記固定子コアは磁性金属よりなる複数のコア層の積層体である。
　この構成によれば、渦電流損が十分に小さく抑えられ、磁気効率に優れた電磁アクチュエータを構成できる。また、金属板のプレス加工にてコア層を形成可能なため、固定子コアの低コスト化に寄与できる。 In one example, the stator core is a laminate of a plurality of core layers made of a magnetic metal.
According to this configuration, an eddy current loss can be suppressed sufficiently small, and an electromagnetic actuator excellent in magnetic efficiency can be configured. Further, since the core layer can be formed by pressing the metal plate, it can contribute to cost reduction of the stator core.
　別の態様は、往復動方向に往復動可能な可動子と、前記往復動方向に並んで配列された複数の突極を含む固定子コアと、前記複数の突極のうちの少なくとも一つに巻回されたコイルとを含む固定子とを備える電磁アクチュエータを提供する。電磁アクチュエータは、前記可動子と前記固定子との境界部の磁気通路が、前記複数の突極のうちの少なくとも１つにおいて前記往復動方向の直交方向にずらされて、それにより、前記可動子を前記往復動方向に往復動する駆動力を生成しながら、前記可動子を前記直交方向に駆動する駆動力を周期的に生成するように構成されている。 In another aspect, at least one of the movable element capable of reciprocating in the reciprocating direction, the stator core including a plurality of salient poles arranged side by side in the reciprocating direction, and the plurality of salient poles. An electromagnetic actuator comprising a stator including a wound coil is provided. In the electromagnetic actuator, a magnetic path at a boundary portion between the movable element and the stator is shifted in a direction orthogonal to the reciprocating direction in at least one of the plurality of salient poles. The driving force for driving the movable element in the orthogonal direction is periodically generated while generating the driving force for reciprocating in the reciprocating direction.
　この構成を備えた電磁アクチュエータは、電気かみそりの駆動源等に用いると好適である。 An electromagnetic actuator having this configuration is preferably used as a drive source for an electric razor.
一実施形態の電気かみそりの斜視図である。It is a perspective view of the electric razor of one Embodiment. （ａ）は電磁アクチュエータの斜視図であり、（ｂ）は固定子と可動子の重なりを説明するための平面図である。(A) is a perspective view of an electromagnetic actuator, (b) is a top view for demonstrating the overlap of a stator and a needle | mover. 変形例の固定子（固定子コア）の平面図である。It is a top view of the stator (stator core) of a modification. 可動子の平面図である。It is a top view of a needle | mover. 電磁アクチュエータのより具体的な構成を示す斜視図である。It is a perspective view which shows the more concrete structure of an electromagnetic actuator. （ａ）は可動子（磁気作用部）のより具体的な構成を示す斜視図であり、（ｂ）（ｃ）はその変形例を示す斜視図である。(A) is a perspective view which shows the more concrete structure of a needle | mover (magnetic action part), (b) (c) is a perspective view which shows the modification.
　以下、本発明の一実施形態に従う電気かみそりを図面に従って説明する。
　図１に示すように、本実施形態の電気かみそり１１は、使用者が把持可能な把持部１２と、該把持部１２の上部に連結されたヘッド部１３とを含む。ヘッド部１３は例えば２自由度で傾動可能である。ヘッド部１３は複数の刃ブロック１４ａ～１４ｃと、電磁アクチュエータ１５とを含む。把持部１２の外面に操作スイッチ１６が設けられる。把持部１２の内部にバッテリ及び駆動回路（ともに図示略）が設けられる。電磁アクチュエータ１５は、把持部１２の操作スイッチ１６のオン操作に基づいて駆動回路が生成する駆動電流（交番電流）の供給を受ける。 Hereinafter, an electric shaver according to an embodiment of the present invention will be described with reference to the drawings.
As shown in FIG. 1, the electric razor 11 of this embodiment includes a grip portion 12 that can be gripped by a user, and a head portion 13 connected to the upper portion of the grip portion 12. The head unit 13 can tilt with two degrees of freedom, for example. The head unit 13 includes a plurality of blade blocks 14a to 14c and an electromagnetic actuator 15. An operation switch 16 is provided on the outer surface of the grip portion 12. A battery and a drive circuit (both not shown) are provided inside the grip portion 12. The electromagnetic actuator 15 is supplied with a drive current (alternating current) generated by the drive circuit based on an ON operation of the operation switch 16 of the grip portion 12.
　ヘッド部１３の上部には、一対の編み目状刃ブロック１４ａ、１４ｂと、スリット状刃ブロック１４ｃとが配置される。編み目状刃ブロック１４ａ、１４ｂは、内刃２２ａ、２２ｂと、内刃２２ａ、２２ｂをそれぞれ覆う網目状外刃２１ａ、２１ｂとを含む。スリット状刃ブロック１４ｃは、編み目状刃ブロック１４ａ、１４ｂ間に配置される。スリット状刃ブロック１４ｃは、スリット状外刃２１ｃと内刃（図示略）とを含む。これらの刃ブロック１４ａ～１４ｃは、刃ブロック１４ａ、１４ｂ、１４ｃの長手方向（図１のＸ）に直交する方向（図１のＹ）に並んで配列されてヘッド部１３の上部に配置される。つまり、図示した電気かみそり１１は、所謂３枚刃型である。 A pair of knitted blade blocks 14a and 14b and a slit blade block 14c are arranged on the upper portion of the head portion 13. The knitted blade blocks 14a and 14b include inner blades 22a and 22b and mesh-shaped outer blades 21a and 21b that cover the inner blades 22a and 22b, respectively. The slit blade block 14c is disposed between the stitch blade blocks 14a and 14b. The slit blade block 14c includes a slit outer blade 21c and an inner blade (not shown). These blade blocks 14a to 14c are arranged side by side in a direction (Y in FIG. 1) perpendicular to the longitudinal direction (X in FIG. 1) of the blade blocks 14a, 14b, and 14c, and are arranged on the top of the head portion 13. . That is, the illustrated electric razor 11 is a so-called three-blade type.
　刃ブロック１４ａ～１４ｃの外刃２１ａ～２１ｃは、外刃カセット２３として一体化されている。外刃カセット２３はヘッドハウジング２４の上部に対して着脱可能である。内刃２２ａ、２２ｂは、ヘッド部１３の上部において、往復移動可能である。内刃２２ａ、２２ｂは、網目状外刃２１ａ、２１ｂの内側面をそれぞれ押圧するように付勢されていることが好ましい。内刃２２ａ、２２ｂは、電磁アクチュエータ１５の駆動により外刃２１ａ、２１ｂ内でに往復動される（図１の矢印Ｘ参照）。以下の説明で「往復動方向Ｘ」は、内刃２２ａ、２２ｂの往復動の方向を指し、「直交方向Ｙ」は、往復動方向Ｘに直交する方向を指す。 The outer blades 21 a to 21 c of the blade blocks 14 a to 14 c are integrated as an outer blade cassette 23. The outer blade cassette 23 can be attached to and detached from the upper portion of the head housing 24. The inner blades 22 a and 22 b can reciprocate at the top of the head portion 13. The inner blades 22a and 22b are preferably urged so as to press the inner surfaces of the mesh outer blades 21a and 21b, respectively. The inner blades 22a and 22b are reciprocated in the outer blades 21a and 21b by driving the electromagnetic actuator 15 (see arrow X in FIG. 1). In the following description, “reciprocating direction X” refers to the direction of reciprocating movement of the inner blades 22 a and 22 b, and “orthogonal direction Y” refers to the direction orthogonal to the reciprocating direction X.
　スリット状刃ブロック１４ｃの内刃（図示略）は、刃ブロック１４ａ、１４ｂの一つの内刃（例えば内刃２２ａ）を駆動する可動子（例えば図２の部材番号３２ａ）と駆動連結されて当該一つの内刃と連動してもよい。 The inner blade (not shown) of the slit blade block 14c is drivingly connected to a mover (for example, member number 32a in FIG. 2) that drives one inner blade (for example, the inner blade 22a) of the blade blocks 14a and 14b. It may be interlocked with one inner blade.
　電磁アクチュエータ１５は、図２（ａ）に示すように、１つの固定子３１と、内刃２２ａ、２２ｂにそれぞれ対応する可動子３２ａ、３２ｂとを含む。固定子３１はヘッドハウジング２４内に固定される。可動子３２ａ、３２ｂは往復動方向Ｘに移動可能である。可動子３２ａ、３２ｂはヘッドハウジング２４に支持されてもよい。 As shown in FIG. 2A, the electromagnetic actuator 15 includes one stator 31 and movers 32a and 32b corresponding to the inner blades 22a and 22b, respectively. The stator 31 is fixed in the head housing 24. The movers 32a and 32b are movable in the reciprocating direction X. The movers 32 a and 32 b may be supported by the head housing 24.
　固定子３１は、複数の突極３３ａ～３３ｃを含む固定子コア３３、及びコイル３４を含む。複数の突極３３ａ～３３ｃは、往復動方向Ｘに並んで配列されている。図示した例では、固定子コア３３はＥ字状であり、３つの突極３３ａ～３３ｃを含む。突極３３ａ、３３ｃを端側突極と呼ぶことがあり、突極３３ｂを中央突極と呼ぶことがある。複数の突極３３ａ～３３ｃの下端部は互いに連結されており、各突極３３ａ～３３ｃの先端は上方を向いている。中央に位置する突極３３ｂの周囲にコイル３４が巻回されている。 The stator 31 includes a stator core 33 including a plurality of salient poles 33a to 33c, and a coil 34. The plurality of salient poles 33a to 33c are arranged side by side in the reciprocating direction X. In the illustrated example, the stator core 33 is E-shaped and includes three salient poles 33a to 33c. The salient poles 33a and 33c may be called end salient poles, and the salient pole 33b may be called central salient poles. The lower ends of the plurality of salient poles 33a to 33c are connected to each other, and the tips of the salient poles 33a to 33c face upward. A coil 34 is wound around a salient pole 33b located in the center.
　固定子コア３３の各突極３３ａ～３３ｃは、細長い長方形の断面を有する四角柱状であり、当該断面の短辺は往復動方向Ｘに延びており、当該断面の長辺は直交方向Ｙに延びている。図２（ｂ）に示すように、往復動方向Ｘに延びる中央二分線Ｌ１によって、突極３３ａ～３３ｃの先端側は、可動子３２ａを駆動する領域Ａ１と、可動子３２ｂを駆動する領域Ａ２とに区分けされる。 Each of the salient poles 33a to 33c of the stator core 33 has a rectangular column shape having an elongated rectangular cross section, the short side of the cross section extends in the reciprocating direction X, and the long side of the cross section extends in the orthogonal direction Y. ing. As shown in FIG. 2 (b), by the central bisector L1 extending in the reciprocating direction X, the tip side of the salient poles 33a to 33c is a region A1 for driving the movable element 32a and a region A2 for driving the movable element 32b. It is divided into and.
　領域Ａ１において、各突極３３ａ～３３ｃの先端面には、一対の凸部３３ｘが設けられている。一対の凸部３３ｘの間に該凸部３３ｘの１つ分の幅の間隙が設けられている。各凸部３３ｘは、細長い長方形の断面を有する四角柱状であり、当該断面の長辺は往復動方向Ｘに延びており、当該断面の短辺は直交方向Ｙに延びている。図示した例では、両端に配置された突極３３ａ、３３ｃの各々については、中央二分線Ｌ１からより遠い位置にある外側の凸部３３ｘは、その突極の直交方向Ｙの外縁に連続して（すなわちその外縁から隙間を空けずに）設けられている。一方、中央の突極３３ｂについては、中央二分線Ｌ１からより遠い位置にある外側の凸部３３ｘは、その突極の直交方向Ｙの外縁から凸部３３ｘの１つの幅分だけ内側にずれた位置（すなわち中央二分線Ｌ１に近い位置）に設けられている。図示した例では、往復動方向Ｘに沿って、突極３３ａの凸部３３ｘと突極３３ｃの凸部３３ｘは互いに一致するが、中央の突極３３ｂの先端面の凸部３３ｘは両端の突極３３ａ、３３ｃの凸部３３ｘからそれぞれ凸部３３ｘの１つの幅分だけ内側にずれている。 In the region A1, a pair of convex portions 33x are provided on the tip surfaces of the salient poles 33a to 33c. A gap having a width corresponding to one of the convex portions 33x is provided between the pair of convex portions 33x. Each convex portion 33x has a rectangular column shape having an elongated rectangular cross section, the long side of the cross section extends in the reciprocating direction X, and the short side of the cross section extends in the orthogonal direction Y. In the illustrated example, for each of the salient poles 33a and 33c arranged at both ends, the outer convex portion 33x located farther from the central bisector L1 continues to the outer edge in the orthogonal direction Y of the salient pole. (Ie, without a gap from the outer edge). On the other hand, with respect to the central salient pole 33b, the outer convex portion 33x located farther from the central bisector L1 is shifted inward by one width of the convex portion 33x from the outer edge in the orthogonal direction Y of the salient pole. It is provided at a position (that is, a position close to the central bisector L1). In the illustrated example, the projecting portion 33x of the salient pole 33a and the projecting portion 33x of the salient pole 33c are aligned with each other along the reciprocating direction X, but the projecting portion 33x on the tip surface of the center salient pole 33b is projected at both ends. Each of the poles 33a and 33c is shifted inward from the convex portion 33x by one width of the convex portion 33x.
　領域Ａ２は中央二分線Ｌ１について領域Ａ１と線対称である。よって、領域Ａ２の両端の突極３３ａ、３３ｃの各々は、その突極の直交方向Ｙの外縁に連続する外側の凸部３３ｘと、該凸部３３ｘの１つの幅分だけ間隙を空けて内側に設けられている内側の凸部３３ｘとを有する。中央の突極３３ｂは、その突極の直交方向Ｙの外縁から凸部３３ｘの１つの幅分だけ内側にずれた位置に設けられた外側の凸部３３ｘと、該凸部３３ｘの１つの幅分だけ間隙を空けて内側に設けられている内側の凸部３３ｘとを有する。 The region A2 is line symmetric with the region A1 with respect to the central bisector L1. Therefore, each of the salient poles 33a and 33c at both ends of the region A2 has an outer convex portion 33x continuous to the outer edge in the orthogonal direction Y of the salient pole and an inner side with a gap corresponding to one width of the convex portion 33x. And an inner convex portion 33x. The center salient pole 33b includes an outer convex portion 33x provided at a position shifted inward by one width of the convex portion 33x from the outer edge in the orthogonal direction Y of the salient pole, and one width of the convex portion 33x. And an inner convex portion 33x provided on the inner side with a gap.
　固定子コア３３は、図５に示すように、ＳＰＣＣ（冷間圧延鋼板）等の磁性金属よりなる複数のコア層３３ｙの積層体であってもよい。固定子コア３３は、磁性金属粉体の圧縮成形体であってもよい。固定子コア３３は、磁性金属ブロックの切削にて構成してもよい。 The stator core 33 may be a laminate of a plurality of core layers 33y made of a magnetic metal such as SPCC (cold rolled steel plate) as shown in FIG. The stator core 33 may be a compression molded body of magnetic metal powder. The stator core 33 may be configured by cutting a magnetic metal block.
　図２の例では、各突極３３ａ～３３ｃの先端面における各領域Ａ１、Ａ２に一対の凸部３３ｘが設けられている。これに代えて、図３に示すように、各領域Ａ１、Ａ２に１つの凸部３３ｘを設けてもよい。図２の例と同様に、図３の例の両端の突極３３ａ、３３ｃの凸部３３ｘは直交方向Ｙの外縁部に設けられるのに対し、中央の突極３３ｂの凸部３３ｘは外縁部から所定量だけ内側にずれた位置に設けられる。 In the example of FIG. 2, a pair of convex portions 33x is provided in each of the regions A1 and A2 on the tip surfaces of the salient poles 33a to 33c. Instead, as shown in FIG. 3, one convex portion 33x may be provided in each of the regions A1 and A2. As in the example of FIG. 2, the convex portions 33x of the salient poles 33a and 33c at both ends in the example of FIG. 3 are provided at the outer edge portion in the orthogonal direction Y, whereas the convex portion 33x of the central salient pole 33b is the outer edge portion. Is provided at a position displaced inward by a predetermined amount.
　次に、固定子３１の動作について説明する。図示略の駆動回路から駆動のための交番電流が中央の突極３３ｂに巻回されたコイル３４に供給されている間、その突極３３ｂの先端の極性は周期的に変化する。一方、両端の突極３３ａ、３３ｃ先端の極性は中央の突極３３ｂの極性と逆位相で周期的に変化する。このようにして突極３３ａ～３３ｃは交番磁界を生成する。突極３３ａ～３３ｃと可動子３２ａ、３２ｂの間の磁束は、凸部３３ｘを集中的に通過する。 Next, the operation of the stator 31 will be described. While an alternating current for driving is supplied from a drive circuit (not shown) to the coil 34 wound around the central salient pole 33b, the polarity of the tip of the salient pole 33b changes periodically. On the other hand, the polarities of the tips of the salient poles 33a and 33c at both ends periodically change with a phase opposite to that of the central salient pole 33b. In this way, the salient poles 33a to 33c generate an alternating magnetic field. The magnetic flux between the salient poles 33a to 33c and the movers 32a and 32b intensively passes through the convex portion 33x.
　次に、可動子３２ａ、３２ｂについて説明する。
　可動子３２ａ、３２ｂは、固定子３１の領域Ａ１、Ａ２にそれぞれ対応付けられている。可動子３２ａ、３２ｂには、固定子３１の突極３３ａ～３３ｃの先端面に対向する磁気作用部３５ａ、３５ｂがそれぞれ設けられている。固定子３１（特に突極３３ａ～３３ｃ）と可動子３２ａ、３２ｂ（特に磁気作用部３５ａ、３５ｂ）とは磁気通路を形成する。固定子３１が生成する交番磁界にて可動子３２ａ、３２ｂの往復動が得られる。 Next, the movers 32a and 32b will be described.
The movers 32a and 32b are associated with the areas A1 and A2 of the stator 31, respectively. The movable elements 32a and 32b are provided with magnetic action portions 35a and 35b facing the tip surfaces of the salient poles 33a to 33c of the stator 31, respectively. The stator 31 (particularly the salient poles 33a to 33c) and the movers 32a and 32b (particularly the magnetic action portions 35a and 35b) form a magnetic path. The reciprocating motion of the movers 32a and 32b is obtained by an alternating magnetic field generated by the stator 31.
　磁気作用部３５ａ、３５ｂの寸法について説明する。以下の説明では、往復動方向Ｘを長手方向と呼ぶことがある。直交方向Ｙを幅方向と呼ぶことがある。図２（ｂ）に示すように、往復動方向Ｘにおける磁気作用部３５ａ、３５ｂの寸法（長さ）は、固定子コア３３の突極３３ａ～３３ｃに跨るが往復動方向Ｘにおける固定子コア３３の寸法（長さ）よりも若干短い。直交方向Ｙにおける磁気作用部３５ａ、３５ｂの寸法（幅）は、直交方向Ｙにおける一対の凸部３３ｘの形成領域の寸法（すなわち、凸部３３ｘの２つ分の幅と、凸部３３ｘ間の間隙距離との合計）と同等である。磁気作用部３５ａ、３５ｂの各々は、長方形板状のベース部３５ｙと、ベース部３５ｙの下面の幅方向の両端に設けられた凸部３５ｘとを含む。各凸部３５ｘの幅は、固定子コア３３の凸部３３ｘと同幅である。各凸部３５ｘの長さは、ベース部３５ｙの長さと同じである。磁気作用部３５ａ、３５ｂの各々の凸部３５ｘの間には、凸部３５ｘの１つ分の幅の間隙が設けられている。図２（ｂ）には、領域Ａ１、Ａ２の各々において、固定子コア３３の各突極３３ａ、３３ｃの外側の凸部３３ｘと、中央の突極３３ｂの内側の凸部３３ｘとの中心を通る中心線Ｌ２が示されている。磁気作用部３５ａ、３５ｂの幅方向の中心点がこの中心線Ｌ２上に位置するように、可動子３２ａ、３２ｂは配置される。内刃２２ａ、２２ｂは可動子３２ａ、３２ｂに着脱可能に連結される。 The dimensions of the magnetic action portions 35a and 35b will be described. In the following description, the reciprocating direction X may be referred to as the longitudinal direction. The orthogonal direction Y may be referred to as the width direction. As shown in FIG. 2B, the dimension (length) of the magnetic action portions 35a and 35b in the reciprocating direction X extends over the salient poles 33a to 33c of the stator core 33, but the stator core in the reciprocating direction X. It is slightly shorter than the dimension (length) of 33. The dimension (width) of the magnetic acting portions 35a and 35b in the orthogonal direction Y is the dimension of the formation region of the pair of convex portions 33x in the orthogonal direction Y (that is, between the width of the two convex portions 33x and the convex portion 33x). The sum of the gap distance). Each of the magnetic acting portions 35a and 35b includes a rectangular plate-shaped base portion 35y and convex portions 35x provided at both ends in the width direction of the lower surface of the base portion 35y. The width of each convex portion 35 x is the same as that of the convex portion 33 x of the stator core 33. The length of each convex part 35x is the same as the length of the base part 35y. Between each convex part 35x of magnetic action part 35a, 35b, the gap | interval of the width | variety for one convex part 35x is provided. In FIG. 2B, in each of the regions A1 and A2, the centers of the convex portions 33x outside the salient poles 33a and 33c of the stator core 33 and the convex portions 33x inside the central salient pole 33b are centered. A center line L2 is shown through. The movers 32a and 32b are arranged so that the center points in the width direction of the magnetic action portions 35a and 35b are located on the center line L2. The inner blades 22a and 22b are detachably connected to the movers 32a and 32b.
　図６を参照して、磁気作用部３５ａ、３５ｂの磁気的構成を説明する。
　図６（ａ）に示す例では、ベース部３５ｙは磁性金属にて構成されて、バックヨークとして機能する。凸部３５ｘは永久磁石３６にて構成される。この永久磁石３６は、往復動方向Ｘの中央に磁極の境界を有し、その境界の両側で異なる磁極を有する。可動子３２ａ、３２ｂの各々の永久磁石３６は互いに同じ極性で配列される。一方、可動子３２ａの永久磁石３６と可動子３２ｂの永久磁石３６は、互いに逆極性で配列される。 With reference to FIG. 6, the magnetic structure of the magnetic action parts 35a and 35b will be described.
In the example shown in FIG. 6A, the base portion 35y is made of a magnetic metal and functions as a back yoke. The convex portion 35 x is constituted by a permanent magnet 36. The permanent magnet 36 has a magnetic pole boundary in the center of the reciprocating direction X, and has different magnetic poles on both sides of the boundary. The permanent magnets 36 of the movers 32a and 32b are arranged with the same polarity. On the other hand, the permanent magnet 36 of the mover 32a and the permanent magnet 36 of the mover 32b are arranged with opposite polarities.
　図６（ｂ）の例では、磁気作用部３５ａ、３５ｂのベース部３５ｙは永久磁石３６にて構成される。凸部３５ｘは磁性金属にて構成される。図６（ｃ）の例では、磁気作用部３５ａ、３５ｂのベース部３５ｙと凸部３５ｘはともに永久磁石３６にて構成される。図６（ｂ）及び図６（ｃ）の構成でも、可動子３２ａ、３２ｂの永久磁石３６は、互いに逆極性で配列される。 6B, the base portions 35y of the magnetic action portions 35a and 35b are constituted by permanent magnets 36. The convex portion 35x is made of a magnetic metal. In the example of FIG. 6C, the base portions 35 y and the convex portions 35 x of the magnetic action portions 35 a and 35 b are both constituted by permanent magnets 36. 6B and 6C, the permanent magnets 36 of the movers 32a and 32b are arranged with opposite polarities.
　図４に示すように、各可動子３２ａ、３２ｂの往復動方向Ｘの両端にバネ部材３７ａを連結し、各可動子３２ａ、３２ｂの直交方向Ｙの両端にバネ部材３７ｂを連結してもよい。バネ部材３７ａのバネ常数が可動子３２ａ、３２ｂの往復動に共振する値に設定されている場合、可動子３２ａ、３２ｂを往復動させる駆動力を小さくすることができる。可動子３２ａ、３２ｂに代えて、磁気作用部３５ａ、３５ｂにバネ部材３７ａ、２７ｂを連結してもよい。 As shown in FIG. 4, the spring member 37a may be connected to both ends of the movable elements 32a and 32b in the reciprocating direction X, and the spring member 37b may be connected to both ends of the movable elements 32a and 32b in the orthogonal direction Y. . When the spring constant of the spring member 37a is set to a value that resonates with the reciprocation of the movers 32a and 32b, the driving force for reciprocating the movers 32a and 32b can be reduced. Instead of the movers 32a and 32b, spring members 37a and 27b may be coupled to the magnetic action portions 35a and 35b.
　電磁アクチュエータ１５の動作を説明する。図２に示すように、固定子３１のコイル３４に交番電流が流れると、中央の突極３３ｂの先端部の極性と両端の突極３３ａ、３３ｃの先端部の極性が逆位相で周期的に変化する。この極性変化に伴う磁界変化は、可動子３２ａ、３２ｂの磁気作用部３５ａ、３５ｂに作用し、それにより、可動子３２ａ、３２ｂは往復動する。可動子３２ａ、３２ｂの永久磁石３６が互いに逆極性で配列されていることから、可動子３２ａ、３２ｂは逆位相で往復動し、内刃２２ａ、２２ｂは往復動する。外刃２１ａ、２１ｂの編み目内に導入された髭は内刃２２ａ、２２ｂと外刃２１ａ、２１ｂとで挟まれて切断され、髭が剃り落とされる。因みに、スリット状外刃２１ｃ内に導入された髭は、可動子３２ａまたは３２ｂと連動する図示略の内刃の往復動により、剃り落とされる。 The operation of the electromagnetic actuator 15 will be described. As shown in FIG. 2, when an alternating current flows through the coil 34 of the stator 31, the polarity of the tip of the central salient pole 33b and the polarity of the tip of the salient poles 33a, 33c are periodically reversed in phase. Change. The magnetic field change accompanying the change in polarity acts on the magnetic action portions 35a and 35b of the movers 32a and 32b, whereby the movers 32a and 32b reciprocate. Since the permanent magnets 36 of the movers 32a and 32b are arranged with opposite polarities, the movers 32a and 32b reciprocate in opposite phases, and the inner blades 22a and 22b reciprocate. The heel introduced into the stitches of the outer blades 21a and 21b is sandwiched and cut between the inner blades 22a and 22b and the outer blades 21a and 21b, and the heel is shaved off. Incidentally, the scissors introduced into the slit-shaped outer blade 21c are shaved off by the reciprocating motion of the inner blade (not shown) interlocked with the mover 32a or 32b.
　固定子３１（固定子コア３３）の突極３３ａ～３３ｃに設けた凸部３３ｘと、可動子３２ａ、３２ｂの磁気作用部３５ａ、３５ｂの凸部３５ｘ（永久磁石３６）との位置関係のため、円弧状の駆動力Ｆ１、Ｆ２（図２（ｂ）参照）が可動子３２ａ、３２ｂにそれぞれ作用する。各円弧状の駆動力Ｆ１、Ｆ２は、往復動方向Ｘの駆動力（往復動方向成分ともいう）と直交方向Ｙの駆動力（直交方向成分ともいう）を持つ。各円弧状の駆動力Ｆ１、Ｆ２は、固定子３１の中央の突極３３ｂから両端の突極３３ａ、３３ｃに向かうほど直交方向Ｙにおいて外側を向いている。駆動力Ｆ１、Ｆ２の往復動方向成分により可動子３２ａ、３２ｂ（内刃２２ａ、２２ｂ）は逆位相で往復動し、駆動力Ｆ１、Ｆ２の直交方向成分により可動子３２ａ、３２ｂ（内刃２２ａ、２２ｂ）は直交方向Ｙに逆位相で付勢される。直交方向成分を持つ駆動力Ｆ１、Ｆ２による可動子３２ａ、３２ｂの逆位相の往復動は、ヘッド部１３を、ＸＹ平面に垂直で外刃２１ａ～２１ｃの中心点を通る軸の周りで、微小角度範囲で周期的に往復回動させる。このヘッド部１３の往復回動は、電気かみそり１１の剃り方向を様々に変化させたのと同様の作用を持つ。様々な方向を向く髭等が外刃２１ａ～２１ｃの編み目内に導入され易くなってその導入率が高くなり、電気かみそり１１の剃り性能は向上する。 Because of the positional relationship between the projections 33x provided on the salient poles 33a to 33c of the stator 31 (stator core 33) and the projections 35x (permanent magnets 36) of the magnetic action portions 35a and 35b of the movers 32a and 32b. Arc-shaped driving forces F1 and F2 (see FIG. 2B) act on the movers 32a and 32b, respectively. Each arcuate driving force F1, F2 has a driving force in the reciprocating direction X (also referred to as a reciprocating direction component) and a driving force in the orthogonal direction Y (also referred to as an orthogonal direction component). The arcuate driving forces F1 and F2 are directed outward in the orthogonal direction Y from the central salient pole 33b of the stator 31 toward the salient poles 33a and 33c at both ends. The movable elements 32a and 32b ( inner blades 22a and 22b) reciprocate in opposite phases by the reciprocating direction components of the driving forces F1 and F2, and the movable elements 32a and 32b (inner blade 22a) by the orthogonal components of the driving forces F1 and F2. , 22b) are biased in the opposite direction in the orthogonal direction Y. The reciprocating motion of the movable elements 32a and 32b by the driving forces F1 and F2 having orthogonal direction components causes the head portion 13 to move minutely around an axis perpendicular to the XY plane and passing through the center point of the outer blades 21a to 21c. Periodically reciprocates within an angular range. The reciprocating rotation of the head portion 13 has the same effect as changing the shaving direction of the electric razor 11 in various ways. The wrinkles or the like facing in various directions are easily introduced into the stitches of the outer blades 21a to 21c, the introduction rate is increased, and the shaving performance of the electric shaver 11 is improved.
　次に、本実施形態の特徴的な作用効果を記載する。
　（１）本実施形態では、可動子３２ａ、３２ｂと固定子３１との境界部の磁気通路を構成する各突極３３ａ～３３ｃの凸部３３ｘは、往復動方向の直交方向にずらして設けられている。これにより、電気かみそり１１の電磁アクチュエータ１５は、各々が往復動方向の駆動力と直交方向の周期的駆動力とを持つ駆動力Ｆ１、Ｆ２を生成して、可動子３２ａ、３２ｂを往復動させる。これにより、内刃２２ａ、２２ｂと外刃２１ａ、２１ｂとで髭等を切断することができる。また、可動子３２ａ、３２ｂを通じてヘッド部１３に伝達される前記直交方向の駆動力により、ヘッド部１３は周期的に往復回動する。この回動は、電気かみそり１１の剃り方向を様々変化させたのと同様の作用を持つため、様々な方向を向く髭等が外刃２１ａ、２１ｂ内に導入され易くなってその導入率が高くなり、剃り性能を向上することができる。 Next, characteristic effects of the present embodiment will be described.
(1) In the present embodiment, the convex portions 33x of the salient poles 33a to 33c constituting the magnetic path at the boundary between the movers 32a and 32b and the stator 31 are provided so as to be shifted in the direction orthogonal to the reciprocating direction. ing. Thereby, the electromagnetic actuator 15 of the electric razor 11 generates driving forces F1 and F2 each having a driving force in the reciprocating direction and a periodic driving force in the orthogonal direction to reciprocate the movers 32a and 32b. . Thereby, a wrinkle etc. can be cut | disconnected with the inner blades 22a and 22b and the outer blades 21a and 21b. Further, the head unit 13 periodically reciprocates by the driving force in the orthogonal direction transmitted to the head unit 13 through the movers 32a and 32b. Since this rotation has the same effect as changing the shaving direction of the electric razor 11, it is easy to introduce wrinkles or the like facing in various directions into the outer blades 21 a and 21 b, and the introduction rate is high. Therefore, the shaving performance can be improved.
　（２）本実施形態では、固定子３１の突極３３ａ～３３ｃの先端面に設けた凸部３３ｘにより、磁気通路をずらすことができる。従来の固定子に凸部３３ｘを設けるだけの容易な構造変更により、剃り性能の向上が実現可能である。 (2) In the present embodiment, the magnetic path can be shifted by the convex portion 33x provided on the tip surface of the salient poles 33a to 33c of the stator 31. The shaving performance can be improved by an easy structural change by simply providing the convex portion 33x on the conventional stator.
　（３）本実施形態では、固定子３１の複数の突極は、往復動方向Ｘの両端にそれぞれ位置する２つの端側突極３３ａ、３３ｃと、往復動方向Ｘにおいて中央に位置する中央突極３３ｂとからなる３つの突極である。２つの端側突極３３ａ、３３ｃの磁気通路は直交方向Ｙの一側にずれており、中央突極３３ｂの磁気通路は直交方向Ｙの他側にずれている。よって、可動子３２ａ、３２ｂと固定子３１との境界部の磁気通路のずらし量を限られた範囲内で大きくでき、可動子３２ａ、３２ｂが受ける往復動方向と直交方向の力を効率よく発生させることができる。 (3) In the present embodiment, the plurality of salient poles of the stator 31 include two end salient poles 33a and 33c located at both ends of the reciprocating direction X, and a central salient located at the center in the reciprocating direction X. There are three salient poles comprising the pole 33b. The magnetic paths of the two end-side salient poles 33a and 33c are shifted to one side in the orthogonal direction Y, and the magnetic path of the central salient pole 33b is offset to the other side in the orthogonal direction Y. Therefore, the shift amount of the magnetic path at the boundary between the movers 32a and 32b and the stator 31 can be increased within a limited range, and the force in the direction orthogonal to the reciprocating direction received by the movers 32a and 32b can be generated efficiently. Can be made.
　（４）本実施形態では、可動子３２ａ、３２ｂの磁気作用部３５ａ、３５ｂに永久磁石３６が用いられることから、固定子３１の発生する磁束量（電流）を抑えても、所望の駆動力Ｆ１、Ｆ２を得ることができる。この構成は消費電力の抑制に寄与する。 (4) In this embodiment, since the permanent magnet 36 is used for the magnetic action portions 35a and 35b of the movers 32a and 32b, a desired driving force can be obtained even if the amount of magnetic flux (current) generated by the stator 31 is suppressed. F1 and F2 can be obtained. This configuration contributes to suppression of power consumption.
　（５）本実施形態では、１つの固定子３１に対して可動子３２ａ、３２ｂが２つ備えられ、可動子３２ａ、３２ｂの永久磁石３６は互いに逆極性で配列され、可動子３２ａ、３２ｂは逆位相で往復動する。このような可動子３２ａ、３２ｂにおいて、本実施形態では、突極３３ａ～３３ｃの凸部３３ｘは、可動子３２ａ、３２ｂにそれぞれ対応する領域Ａ１、Ａ２間で、線対称にすらされている。一対の可動子３２ａ、３２ｂの逆位相の往復動に相乗させて、可動子３２ａ、３２ｂが受ける直交方向の力を効率よく発生させることができる。 (5) In this embodiment, two movers 32 a and 32 b are provided for one stator 31, the permanent magnets 36 of the movers 32 a and 32 b are arranged with opposite polarities, and the movers 32 a and 32 b are Reciprocates in opposite phase. In such movers 32a and 32b, in the present embodiment, the convex portions 33x of the salient poles 33a to 33c are even line-symmetric between the regions A1 and A2 corresponding to the movers 32a and 32b, respectively. By synergistically reciprocating the opposite phases of the pair of movers 32a and 32b, the force in the orthogonal direction received by the movers 32a and 32b can be efficiently generated.
　（６）本実施形態では、可動子３２ａ、３２ｂを共振させるバネ部材３７ａを備えることで、固定子３１が発生する磁束量（電流）を抑えても、所望の駆動力を得ることができる。 (6) In this embodiment, by providing the spring member 37a that resonates the movers 32a and 32b, a desired driving force can be obtained even if the amount of magnetic flux (current) generated by the stator 31 is suppressed.
　（７）本実施形態の固定子コア３３を磁性金属よりなるコア層３３ｙの積層体にて構成することで、渦電流損を十分小さく抑えることができ、磁気効率に優れた電磁アクチュエータ１５を構成することができる。また、金属板のプレス加工にて各コア層３３ｙが形成可能なため、この構成の固定子コア３３では低コスト化に寄与できる。また、固定子コア３３を磁性金属粉体の圧縮成形にて構成すれば、渦電流損を十分小さく抑えることができ、磁気効率に優れた電磁アクチュエータ１５を構成することができるとともに、成形にて構成される固定子コア３３ではその形状の自由度は高い。 (7) By configuring the stator core 33 of the present embodiment with a laminated body of the core layer 33y made of magnetic metal, the eddy current loss can be suppressed sufficiently small, and the electromagnetic actuator 15 having excellent magnetic efficiency is configured. can do. In addition, since each core layer 33y can be formed by pressing a metal plate, the stator core 33 having this configuration can contribute to cost reduction. Further, if the stator core 33 is configured by compression molding of magnetic metal powder, eddy current loss can be suppressed sufficiently small, and the electromagnetic actuator 15 having excellent magnetic efficiency can be configured. The configured stator core 33 has a high degree of freedom in its shape.
　（８）往復動方向Ｘの両端の突極３３ａ、３３ｃに形成される凸部３３ｘと、往復動方向Ｘの中間位置の突極３３ｂに形成される凸部３３ｘとは、制御された量だけ直交方向Ｙにシフトされている。特に、両端の突極３３ａ、３３ｃに形成される凸部３３ｘが中間位置の突極３３ｂに形成される凸部３３ｘよりも、直交方向Ｙにおいて外側にシフトされている。このシフトにより、互いに逆位相の直交方向成分が駆動力Ｆ１、Ｆ２に付与され、ヘッド部１３に作用する回転モーメントは増大する。よって、電気かみそり１１の剃り性能は向上する。 (8) The convex portion 33x formed on the salient poles 33a and 33c at both ends in the reciprocating direction X and the convex portion 33x formed on the salient pole 33b at the intermediate position in the reciprocating direction X are controlled amounts. Shifted in the orthogonal direction Y. In particular, the convex portions 33x formed on the salient poles 33a and 33c at both ends are shifted outward in the orthogonal direction Y from the convex portion 33x formed on the salient pole 33b at the intermediate position. By this shift, orthogonal components having opposite phases are applied to the driving forces F1 and F2, and the rotational moment acting on the head portion 13 increases. Therefore, the shaving performance of the electric razor 11 is improved.
　尚、本発明の実施形態は、以下のように変更してもよい。
　・上記実施形態では、凸部３３ｘと固定子コア３３（突極３３ａ～３３ｃ）は一体に形成されているが、凸部３３ｘは固定子コア３３と別部材であってもよく、接合や接着により凸部３３ｘを固定子コア３３に固定してもよい。この構成によれば、従来の固定子に凸部３３ｘを付加するという変更で、本願発明の作用効果を得ることができる。また、凸部３３ｘを固定子コア３３の作成手法とは別の手法で作製することもできる。例えば、磁束が集中する凸部３３ｘは、例えば渦電流損を小さくできる磁性金属粉体の圧縮成形にて構成することができる。 In addition, you may change embodiment of this invention as follows.
In the above embodiment, the convex portion 33x and the stator core 33 (the salient poles 33a to 33c) are integrally formed. However, the convex portion 33x may be a separate member from the stator core 33, and may be joined or bonded. Thus, the convex portion 33x may be fixed to the stator core 33. According to this structure, the effect of this invention can be acquired by the change of adding the convex part 33x to the conventional stator. Moreover, the convex part 33x can also be produced by a technique different from the technique for producing the stator core 33. For example, the convex portion 33x where the magnetic flux concentrates can be configured by compression molding of magnetic metal powder that can reduce eddy current loss, for example.
　・上記実施形態では、固定子３１（固定子コア３３）の突極３３ａ～３３ｃの先端面の凸部３３ｘを直交方向Ｙにずらしたが、可動子３２ａ、３２ｂの磁気作用部３５ａ、３５ｂの凸部３５ｘを直交方向Ｙにずらしてもよい。この場合、磁気作用部３５ａ、３５ｂのずらされた凸部３５ｘは、可動子と固定子との境界部の磁気通路をずらす凸部として機能する。または、固定子３１の凸部３３ｘと可動子３２ａ、３２ｂの凸部３５ｘの両方をずらしてもよい。 In the above embodiment, the convex portion 33x of the tip surface of the salient poles 33a to 33c of the stator 31 (stator core 33) is shifted in the orthogonal direction Y. However, the magnetic action portions 35a and 35b of the movers 32a and 32b The convex portion 35x may be shifted in the orthogonal direction Y. In this case, the convex portions 35x in which the magnetic acting portions 35a and 35b are shifted function as convex portions that shift the magnetic path at the boundary between the mover and the stator. Or you may shift both the convex part 33x of the stator 31, and the convex part 35x of the needle | mover 32a, 32b.
　・上記実施形態では、両端に位置する突極３３ａ、３３ｃの凸部３３ｘを直交方向Ｙの一側にずらし、中央に位置する突極３３ｃの凸部３３ｘを直交方向Ｙの他側にずらしたが、これに限らず、少なくとも１つの突極３３ａ～３３ｃの凸部３３ｘをずらす態様でもよい。 In the above embodiment, the convex portions 33x of the salient poles 33a and 33c located at both ends are shifted to one side in the orthogonal direction Y, and the convex portion 33x of the salient pole 33c located in the center is shifted to the other side in the orthogonal direction Y. However, the present invention is not limited to this, and a mode in which the convex portion 33x of at least one of the salient poles 33a to 33c is shifted may be employed.
　・上記実施形態では、可動子３２ａ、３２ｂと固定子３１との境界部の磁気通路を直交方向Ｙにずらすべく、突極３３ａ～３３ｃの先端面に凸部３３ｘをずらして設けたが、凸部３３ｘを廃止し、突極３３ａ～３３ｃ自身を直交方向Ｙにずらす態様としてもよい。この場合、突極３３ａ～３３ｃの先端面は、可動子と固定子との境界部の磁気通路をずらす凸部として機能する。 In the above embodiment, the convex portion 33x is provided on the tip surface of the salient poles 33a to 33c so as to shift the magnetic path at the boundary between the movers 32a and 32b and the stator 31 in the orthogonal direction Y. The part 33x may be eliminated, and the salient poles 33a to 33c themselves may be shifted in the orthogonal direction Y. In this case, the tip surfaces of the salient poles 33a to 33c function as convex portions that shift the magnetic path at the boundary between the mover and the stator.
　・上記実施形態では、可動子３２ａ、３２ｂの磁気作用部３５ａ、３５ｂに永久磁石３６を用いたが、永久磁石３６を用いない磁性金属を用いた所謂リラクタンス型の電磁アクチュエータに適用してもよい。この場合、この磁気作用部３５ａ、３５ｂは、磁性金属よりなるコア層の積層体、磁性金属粉体の成形、磁性金属ブロックの切削等で作製する。また、この磁気作用部３５ａ、３５ｂでは、往復動方向Ｘにも所定間隔でリラクタンス用の凸部を設けるとよい。 In the above embodiment, the permanent magnet 36 is used for the magnetic action portions 35a and 35b of the movers 32a and 32b. However, the present invention may be applied to a so-called reluctance type electromagnetic actuator using a magnetic metal that does not use the permanent magnet 36. . In this case, the magnetic action portions 35a and 35b are manufactured by a laminated body of core layers made of magnetic metal, magnetic metal powder molding, magnetic metal block cutting, or the like. In the magnetic action portions 35a and 35b, reluctance convex portions may be provided in the reciprocating direction X at predetermined intervals.
　・上記実施形態では、中央の突極３３ｂにコイル３４を巻回させて固定子３１を構成したが、両端の突極３３ａ、３３ｃにコイル３４を巻回させてもよい。
　・上記実施形態では、一対の可動子３２ａ、３２ｂを１つの固定子３１で駆動したが、各可動子３２ａ、３２ｂそれぞれに対応する複数の固定子を用いる構成としてもよい。 In the embodiment described above, the stator 31 is configured by winding the coil 34 around the center salient pole 33b. However, the coil 34 may be wound around the salient poles 33a and 33c at both ends.
In the above embodiment, the pair of movers 32a and 32b is driven by one stator 31, but a plurality of stators corresponding to the respective movers 32a and 32b may be used.
　・上記実施形態では、電気かみそり１１は、３つの外刃２１ａ～２１ｃを有する所謂３枚刃型であったが、電気かみそり１１の形式は、１枚刃、２枚刃、４枚刃以上であってもよい。 In the above embodiment, the electric razor 11 is a so-called three-blade type having three outer blades 21a to 21c. However, the electric razor 11 is a single-blade, two-blade, four-blade or more. There may be.
　１１…電気かみそり、１２…把持部、１３…ヘッド部、１５…電磁アクチュエータ、２１ａ、２１ｂ…外刃、２２ａ、２２ｂ…内刃、３１…固定子、３２ａ、３２ｂ…可動子、３３…固定子コア、３３ａ～３３ｃ…突極、３３ｘ…凸部（磁気通路）、３３ｙ…コア層、３４…コイル、３５ａ、３５ｂ…磁気作用部、３６…永久磁石、３７ａ…バネ部材、Ｆ１、Ｆ２…駆動力。 DESCRIPTION OF SYMBOLS 11 ... Electric razor, 12 ... Holding part, 13 ... Head part, 15 ... Electromagnetic actuator, 21a, 21b ... Outer blade, 22a, 22b ... Inner blade, 31 ... Stator, 32a, 32b ... Movable element, 33 ... Stator Core, 33a to 33c ... salient pole, 33x ... convex part (magnetic path), 33y ... core layer, 34 ... coil, 35a, 35b ... magnetic action part, 36 ... permanent magnet, 37a ... spring member, F1, F2 ... drive Power.

Claims (11)

  1. 　把持部に対して傾動可能に連結されるヘッド部と、
    　前記ヘッド部内に設けられた往復動可能な内刃と、
    　前記内刃を覆うように前記ヘッド部に設けられた外刃と、
    　前記内刃を往復動させる電磁アクチュエータであって、
    　　前記内刃を支持し、前記内刃を往復動方向に往復動可能させる可動子と、
    　　前記往復動方向に並んで配列された複数の突極を含む固定子コアと、前記複数の突極のうちの少なくとも一つに巻回されたコイルとを含む固定子とを含む前記電磁アクチュエータと、
    を備える電気かみそりであって、
    　前記電磁アクチュエータは、
    　前記可動子と前記固定子との境界部の磁気通路が、前記複数の突極のうちの少なくとも１つにおいて前記往復動方向の直交方向にずらされて、それにより、前記可動子を前記往復動方向に往復動する駆動力を生成しながら、前記可動子を前記直交方向に駆動する駆動力を周期的に生成するように構成されている電気かみそり。     A head unit that is tiltably coupled to the gripping unit;
    A reciprocating inner blade provided in the head portion;
    An outer blade provided on the head portion so as to cover the inner blade;
    An electromagnetic actuator for reciprocating the inner blade,
    A mover that supports the inner blade and allows the inner blade to reciprocate in a reciprocating direction;
    The electromagnetic actuator comprising: a stator core including a plurality of salient poles arranged side by side in the reciprocating direction; and a stator including a coil wound around at least one of the plurality of salient poles; ,
    An electric razor comprising:
    The electromagnetic actuator is
    A magnetic path at a boundary between the mover and the stator is shifted in a direction orthogonal to the reciprocating direction in at least one of the plurality of salient poles, thereby moving the mover to the reciprocating motion. An electric shaver configured to periodically generate a driving force for driving the movable element in the orthogonal direction while generating a driving force that reciprocates in a direction.
  2. 　各突極の先端面及び当該先端面と対向する前記可動子の磁気作用部の少なくとも一方に、前記磁気通路をずらすための凸部が設けられている請求項１に記載の電気かみそり。 2. An electric shaver according to claim 1, wherein at least one of the tip surface of each salient pole and the magnetic action portion of the mover facing the tip surface is provided with a convex portion for shifting the magnetic path.
  3. 　前記凸部は、前記固定子コアと別部材である請求項２に記載の電気かみそり。 The electric razor according to claim 2, wherein the convex portion is a separate member from the stator core.
  4. 　前記複数の突極は、前記往復動方向の両端にそれぞれ位置する２つの端側突極と、前記往復動方向において中央に位置する中央突極とからなる３つの突極であり、
    　前記２つの端側突極の磁気通路は前記直交方向の一側にずれており、前記中央突極の磁気通路は前記直交方向の他側にずれている請求項１に記載の電気かみそり。     The plurality of salient poles are three salient poles each composed of two end-side salient poles located at both ends in the reciprocating direction and a central salient pole located in the center in the reciprocating direction,
    The electric razor according to claim 1, wherein the magnetic paths of the two end-side salient poles are shifted to one side in the orthogonal direction, and the magnetic path of the central salient pole is offset to the other side in the orthogonal direction.
  5. 　各突極の先端面と対向する前記可動子の磁気作用部は永久磁石を含む請求項１に記載の電気かみそり。 The electric razor according to claim 1, wherein the magnetic action portion of the mover facing the tip surface of each salient pole includes a permanent magnet.
  6. 　前記固定子は一つであり、前記可動子は２つであり、前記２つの可動子は互いに逆極性で配列された永久磁石を含む磁気作用部を備え、前記２つの可動子は逆位相で往復動される請求項５に記載の電気かみそり。 The number of the movable elements is one, the number of the movable elements is two, the two movable elements each include a magnetic action unit including permanent magnets arranged in opposite polarities, and the two movable elements are in opposite phases. The electric shaver according to claim 5, which is reciprocated.
  7. 　前記２つの可動子と前記固定子との境界部にそれぞれ形成される２つの磁気通路は、前記２つの可動子で線対称となるようにずれている請求項６に記載の電気かみそり。 The electric razor according to claim 6, wherein two magnetic paths respectively formed at a boundary portion between the two movers and the stator are shifted so as to be line symmetric with respect to the two movers.
  8. 　前記可動子を共振させるためのバネ部材を更に備える請求項１に記載の電気かみそり。 The electric shaver according to claim 1, further comprising a spring member for resonating the movable element.
  9. 　前記固定子コアは磁性金属粉体の圧縮成形体である請求項１に記載の電気かみそり。 2. The electric shaver according to claim 1, wherein the stator core is a compression molded body of magnetic metal powder.
  10. 　前記固定子コアは磁性金属よりなる複数のコア層の積層体である請求項１に記載の電気かみそり。 The electric shaver according to claim 1, wherein the stator core is a laminate of a plurality of core layers made of a magnetic metal.
  11. 　往復動方向に往復動可能な可動子と、
    　前記往復動方向に並んで配列された複数の突極を含む固定子コアと、前記複数の突極のうちの少なくとも一つに巻回されたコイルとを含む固定子と、
    を備える電磁アクチュエータであって、
    　前記可動子と前記固定子との境界部の磁気通路が、前記複数の突極のうちの少なくとも１つにおいて前記往復動方向の直交方向にずらされて、それにより、前記可動子を前記往復動方向に往復動する駆動力を生成しながら、前記可動子を前記直交方向に駆動する駆動力を周期的に生成するように構成されている電磁アクチュエータ。     A mover capable of reciprocating in the reciprocating direction;
    A stator core including a plurality of salient poles arranged side by side in the reciprocating direction and a coil wound around at least one of the plurality of salient poles;
    An electromagnetic actuator comprising:
    A magnetic path at a boundary between the mover and the stator is shifted in a direction orthogonal to the reciprocating direction in at least one of the plurality of salient poles, thereby moving the mover to the reciprocating motion. An electromagnetic actuator configured to periodically generate a driving force for driving the mover in the orthogonal direction while generating a driving force that reciprocates in a direction.
PCT/JP2009/066475 2008-09-25 2009-09-24 Electric shaver, and electromagnetic actuator WO2010035728A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2008-246632 2008-09-25
JP2008246632A JP2010075404A (en) 2008-09-25 2008-09-25 Electric razor and electromagnetic actuator

Publications (1)

Publication Number Publication Date
WO2010035728A1 true WO2010035728A1 (en) 2010-04-01

Family

ID=42059727

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2009/066475 WO2010035728A1 (en) 2008-09-25 2009-09-24 Electric shaver, and electromagnetic actuator

Country Status (2)

Country Link
JP (1) JP2010075404A (en)
WO (1) WO2010035728A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108274497A (en) * 2018-04-10 2018-07-13 舒可士（深圳）科技有限公司 Hair clipper transmission mechanism
CN116207942A (en) * 2023-05-05 2023-06-02 广东罗曼智能科技股份有限公司 Linear motor and electric tool

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6765079B2 (en) * 2017-04-19 2020-10-07 パナソニックＩｐマネジメント株式会社 Vibration type linear actuator and hair treatment machine

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002177665A (en) * 2000-12-15 2002-06-25 Matsushita Electric Works Ltd Reciprocating electric razor
JP2003519553A (en) * 2000-01-14 2003-06-24 パイアー エレクトロプロドゥクテ ゲゼルシャフト ミット ベシュレンクテル ハフツング Electric shaver
JP2005341771A (en) * 2004-05-31 2005-12-08 Matsushita Electric Works Ltd Vibrating linear actuator
JP2005537897A (en) * 2002-09-11 2005-12-15 ブラウン ゲーエムベーハー Drive mechanism for generating oscillating motion in small appliances
JP2007104898A (en) * 2006-12-28 2007-04-19 Matsushita Electric Works Ltd Vibration type linear actuator

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003519553A (en) * 2000-01-14 2003-06-24 パイアー エレクトロプロドゥクテ ゲゼルシャフト ミット ベシュレンクテル ハフツング Electric shaver
JP2002177665A (en) * 2000-12-15 2002-06-25 Matsushita Electric Works Ltd Reciprocating electric razor
JP2005537897A (en) * 2002-09-11 2005-12-15 ブラウン ゲーエムベーハー Drive mechanism for generating oscillating motion in small appliances
JP2005341771A (en) * 2004-05-31 2005-12-08 Matsushita Electric Works Ltd Vibrating linear actuator
JP2007104898A (en) * 2006-12-28 2007-04-19 Matsushita Electric Works Ltd Vibration type linear actuator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108274497A (en) * 2018-04-10 2018-07-13 舒可士（深圳）科技有限公司 Hair clipper transmission mechanism
CN116207942A (en) * 2023-05-05 2023-06-02 广东罗曼智能科技股份有限公司 Linear motor and electric tool

Also Published As

Publication number Publication date
JP2010075404A (en) 2010-04-08

Similar Documents

Publication Publication Date Title
EP1785240B1 (en) Electric razor
KR100528654B1 (en) Hair cutter
JP2006042897A (en) Reciprocal electric shaver
WO2009119450A1 (en) Electromagnetic actuator and electric shaver
WO2010035728A1 (en) Electric shaver, and electromagnetic actuator
JP2010035315A (en) Actuator
JP3915607B2 (en) Vibrating linear actuator and electric shaver using the same
JP2009081920A (en) Vibration type linear actuator
JP4251184B2 (en) Hair cutter
EP2481536A1 (en) Electric shaver
CA2994624C (en) Actuator and electric beauty device
EP3324524B1 (en) Flux bridge for pivot motors
JP3841021B2 (en) Vibration type linear actuator
JP4631846B2 (en) Vibration type linear actuator
AU2016303731B2 (en) Actuator and electric beauty device
JP2002177665A (en) Reciprocating electric razor
JP3661370B2 (en) Vibration type linear actuator
JP4883097B2 (en) Vibration type linear actuator
JP2012065974A (en) Electric razor
JP7030558B2 (en) Reciprocating electric shaver
JP5096839B2 (en) Electromagnetic actuator and electric razor
JP2005160134A (en) Vibrating linear actuator
JP5953688B2 (en) Linear drive
JP2012065972A (en) Actuator and electric razor using the same
JP2005229778A (en) Linear motor

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 09816143

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 09816143

Country of ref document: EP

Kind code of ref document: A1