JP2010075405A - Electric shaver - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electric shaver in which shaving performance is improved without frequently changing an angle of using. <P>SOLUTION: At both ends in the width direction Y of a first screen portion 21 (first screen), second screen portions 22 (second screens) are respectively generated. Inside the respective second screen portions 22, second cutter blades 32 coming into slide contact with the rear surfaces of the second screen portions 22 are provided. The second screen portions 22 are formed such that the surfaces thereof face the outside of the width direction Y (a side opposite to the first screen). <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an electric razor for shaving body hair such as a heel.

Conventionally, an electric razor includes a blade block composed of an inner blade that reciprocates linearly and a mesh-shaped outer blade that is provided so as to cover the inner blade. In such an electric razor, The introduced scissors or the like is shaved (cut by being sandwiched) between the outer blade and the inner blade (for example, Patent Document 1). In such an electric razor, since the outer blade of the blade block generally has a curved shape parallel to the movement direction of the inner blade, if the electric razor is moved in a direction perpendicular to the movement direction, it will be Can be easily introduced into the mesh of the outer blade and can be shaved well.
JP-A-7-265560

  By the way, the direction of the growth of the heel is not aligned in one direction, and the beard and the like grow in various directions. For this reason, in order to efficiently introduce the scissors into the blade block, the direction of the electric razor (the outer cutter's It was necessary to use it while changing the angle of the vertical line on the top surface), and the act of changing the angle of the electric razor many times and shaving again was troublesome.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an electric razor that can improve shaving performance without changing the use angle.

  In order to solve the above-mentioned problem, the invention described in claim 1 includes a first inner blade that reciprocates linearly, and a curve that is provided so as to cover the first inner blade and is parallel to the movement direction of the first inner blade. A first blade block composed of a mesh-shaped first outer blade formed in a shape, a second inner blade that is provided on the side of the first blade block in the movement direction of the first inner blade, and reciprocates; A second blade block comprising a mesh-like second outer blade provided so as to cover the second inner blade, and at least a part of the surface of the second outer blade faces the side opposite to the first blade block. The gist is that it is provided as described above.

  In this invention, when the electric razor is shaved by moving in the direction perpendicular to the direction of movement of the first inner blade, body hair such as a heel is easily introduced from the first outer blade of the first blade block, and the first inner blade When shaving by moving in the movement direction of the blade, it is easy to introduce scissors or the like from the second outer blade of the second blade block. Therefore, it is possible to improve the shaving performance by changing the moving direction without changing the working angle of the electric razor (the angle in the rotational direction about the vertical line of the top surface of the first outer blade). .

  According to a second aspect of the present invention, in the electric razor according to the first aspect, the first inner blade is fixed to a movable element that reciprocates linearly by driving a drive source, and the movable element and the The gist of the present invention is that a transmission portion is provided between the second inner blade and the movement of the mover to the second inner blade to reciprocate the second inner blade.

  In this invention, since the first inner blade and the second inner blade can be reciprocated by one drive source, it is not necessary to provide a separate drive source for the second inner blade, contributing to the cost reduction of the electric razor. can do.

The gist of the invention described in claim 3 is that, in the electric shaver according to claim 1 or 2, the first outer blade and the second outer blade are made of the same member.
In this invention, the increase in the number of parts of an electric shaver can be suppressed.

The gist of the invention described in claim 4 is that, in the electric shaver according to claim 1 or 2, the first outer blade and the second outer blade are made of different members.
In the present invention, the first and second outer blades can be easily manufactured.

  According to a fifth aspect of the present invention, in the electric shaver according to any one of the first to fourth aspects, the second outer blade has an inclined portion that is inclined toward the movement direction of the first inner blade. This is the gist.

In this invention, it is possible to smoothly move the electric razor in the movement direction of the first inner blade while the surface of the first outer blade is in contact with the skin.
According to a sixth aspect of the present invention, in the electric razor according to any one of the first to fifth aspects, the second outer blade has an arc shape on the side opposite to the first blade block as viewed from the vertical direction of the electric razor. The gist is that it is convex.

  In this invention, since the second outer blade is convex in an arc shape on the side opposite to the first blade block when viewed from the vertical direction of the electric razor (the direction perpendicular to the top surface of the first outer blade), the surface of the first outer blade is When the electric razor is moved in contact with the skin, the second outer blade is prevented from being caught on the skin and can be moved smoothly.

  Therefore, according to the above-described invention, the shaving performance can be improved without changing the use angle.

(First embodiment)
A first embodiment of the present invention will be described below with reference to the drawings.
An electric razor 1 according to this embodiment shown in FIG. 1 has a head portion 2 provided at the tip of a gripping portion (not shown). The head portion 2 is formed by attaching a blade block 11 to an upper portion of a housing 10. The blade block 11 includes an outer blade member 12 disposed at the upper end portion of the blade block 11 and an inner blade unit 13 disposed inside the outer blade member 12.

  The outer blade member 12 is fixed to the housing 10 via an outer blade cassette 14. The outer blade member 12 has a mesh shape in which a large number of introduction holes 12a (see FIG. 2) are formed in a thin plate-like member. The length of the outer blade member 12 in the width direction Y is the housing 10 Is set substantially equal to the length in the width direction Y. And the 1st outer blade part 21 (1st outer blade) is formed in the center part of the width direction Y of the outer blade member 12, and the 2nd outer blade part 22 (first) is formed in the width direction Y both ends. 2 outer blades) are respectively formed.

  The first outer blade portion 21 is formed in a curved shape that is parallel to the width direction Y of the housing 10 and protrudes upward (a semicircular shape that protrudes upward when viewed from the width direction Y of the housing 10). . That is, the surface of the first outer blade portion 21 is formed so as to face upward and the front-rear direction X (directions orthogonal to the width direction Y and the vertical direction Z, respectively).

The second outer blade portion 22 is extended from the first outer blade portion 21 to both sides in the width direction Y of the housing 10, and each of the second outer blade portions 22 is formed in a quadrispherical shape. . Specifically, each of the second outer blade portions 22 is formed in a semicircular shape similar to the first outer blade portion 21 when viewed from the width direction Y, and also in the vertical direction Z (perpendicular direction with respect to the top surface of the outer blade member 12). ) In a semicircular shape outward in the width direction Y. That is, each 2nd outer blade part 22 is formed so that the surface may face the outer side (counter 1st outer blade part side) of the width direction Y. As shown in FIG. Each of the second outer blade portions 22 has an arc shape when viewed from the front-rear direction X. That is, the second outer blade portion 22 has an inclined portion 22 a that is inclined in the width direction Y.

  As shown in FIG. 2, the inner blade unit 13 includes a movable element 33 connected and supported by a drive source (not shown) provided in the electric razor 1, and a plurality of fixed elements fixed to the upper part of the movable element 33. A first inner blade 31 is provided. The mover 33 is made of a resin material and is provided so as to be able to reciprocate linearly along the width direction Y of the housing 10. The first inner blade 31 is juxtaposed along the movement direction Y of the mover 33 and is convex upward in a semicircular shape when viewed from the movement direction Y. The mover 33 is biased upward by a biasing member (not shown), and the upper end of the first inner blade 31 is pressed against the back surface of the first outer blade portion 21. Thus, the first inner blade 31 is linearly reciprocated in the width direction Y of the housing 10 by the drive of the drive source, and the upper end thereof is in sliding contact with the back surface of the first outer blade portion 21. And the 1st inner blade 31 cut | disconnects the wrinkles etc. which were mainly introduce | transduced from the introduction hole 12a (mesh) of the 1st outer blade part 21 in cooperation with this 1st outer blade part 21. . In this embodiment, the 1st inner blade 31 and the 1st outer blade part 21 comprise the 1st blade block.

  The inner blade unit 13 transmits a pair of link mechanisms 41 as transmission portions that transmit the movement of the mover 33 to the second inner blade 32 to reciprocate the second inner blade on both sides in the width direction Y of the mover 33. I have. In FIG. 2, for convenience of explanation, only one of the pair of link mechanisms 41 is shown, but the other link mechanism 41 (not shown) has the same configuration as that shown in the figure. ing.

  On both sides of the mover 33 in the width direction Y, support portions 42 extending from the housing 10 are arranged. A support pin 43 extending in the front-rear direction X orthogonal to the movement direction Y and the vertical direction Z (perpendicular direction of the top surface of the outer blade member 12) is fixed to the support portion 42, and the support pin 43 is pivoted in a rod shape. The member 44 is rotatably supported. An arcuate base portion 45 is supported at the tip of the rotating member 44, and a plurality of second inner blades 32 are fixed to the upper surface of the base portion 45. The second inner blades 32 are juxtaposed along the arc shape of the second outer blade portion 22 when viewed from the front-rear direction X, and the upper ends of the second inner blades 32 are the second outer blades of the outer blade member 12. An arc shape corresponding to the shape of the portion 22 is formed.

  Further, a compression coil spring 46 is interposed between the rotating member 44 and the base portion 45, and the compression coil spring 46 biases the base portion 45 toward the second outer blade portion 22 side. Accordingly, the second inner blade 32 is in pressure contact with the back surface of the second outer blade portion 22 of the outer blade member 12. Further, an insertion pin 47 is fixed at a position closer to the base end side than the support pin 43 in the rotating member 44, and the insertion pin 47 is inserted into a guide hole 33 a formed in the movable element 33 and extending in the vertical direction. Has been.

  In the link mechanism 41 configured as described above, when the mover 33 reciprocates linearly in the width direction Y, the insertion pin 47 of the rotation member 44 moves along the guide hole 33 a and the rotation member 44 is supported by the support pin 43. Reciprocally pivots about As a result, the base portion 45 and the second inner blade 32 reciprocate so that the second inner blade 32 is in sliding contact with the back surface of the second outer blade portion 22 of the outer blade member 12. And the 2nd inner blade 32 cut | disconnects the wrinkles etc. which were mainly introduce | transduced from the introduction hole 12a (mesh) of the 2nd outer blade part 22 in cooperation with this 2nd outer blade part 22. . In this embodiment, the 2nd inner blade 32 and the 2nd outer blade part 22 comprise the 2nd blade block.

  In the electric razor 1 as described above, the drive source is turned on by operating an operation unit (not shown), the first and second inner blades 32 are driven to reciprocate, and the surface of the outer blade member 12 is brought into contact with the skin. It is designed to shave heels. At this time, when the electric razor 1 is used while being moved in the front-rear direction X, the scissors are easily introduced mainly from the first outer blade portion 21, and the introduced scissors are cut by the first inner blade 31. It is like that. On the other hand, when the electric razor 1 is moved in the width direction Y (the direction of movement of the first inner blade 31) to shave the scissors or the like, the scissors are easily introduced mainly from the second outer blade portion 22, and the second The scissors introduced from the outer cutter 22 are cut by the second inner cutter 32. Further, when the electric razor 1 is used while being moved in an oblique direction between the width direction Y and the front-rear direction X, scissors are easily introduced from both the first outer blade portion 21 and the second outer blade portion 22. It has become. Thereby, when shaving a sword etc., it is possible to improve shaving performance only by changing a moving direction, without changing the use angle (angle around Z-axis) of the electric shaver 1. In addition, in this embodiment, since each 2nd outer blade part 22 has comprised circular arc shape seeing from the up-down direction Z, the electric razor 1 is made to the width direction Y in the state which made the surface of the outer blade member 12 contact skin. It is easy to move in the diagonal direction between the front and back direction X.

Next, characteristic effects of the present embodiment will be described.
(1) In the present embodiment, second outer blade portions 22 (second outer blades) are formed at both ends in the width direction Y of the first outer blade portion 21 (first outer blade), and each second outer blade portion 21 is formed. Inside the blade portion 22, a second inner blade 32 is provided that can slide in contact with the back surface of the second outer blade portion 22. And each 2nd outer blade part 22 is formed so that the surface may face the outer side (counter 1st outer blade part side) of the width direction Y. As shown in FIG. Thereby, when the electric razor 1 is moved and shaved in the direction (front-rear direction X) orthogonal to the movement direction Y of the first inner blade 31, it is easy to introduce scissors etc. from the first outer blade portion 21, When the first inner blade 31 is moved in the movement direction Y and shaved, it is easy to introduce scissors and the like from the second outer blade portion 22. Therefore, even if it does not change the use angle (angle around Z axis) of the electric shaver 1, it can improve shaving performance by using it while changing the moving direction.

  (2) In the present embodiment, the first inner blade 31 and the second inner blade 32 can be reciprocated by one drive source, so there is no need to provide a separate drive source for the second inner blade 32, and the electric It can contribute to the cost reduction of the razor 1.

  (3) In this embodiment, since the 2nd outer blade part 22 has the inclination part 22a inclined toward the moving direction Y of the 1st inner blade 31, the surface of the 1st outer blade part 21 is made to contact skin. In this state, the electric razor 1 can be smoothly moved in the width direction Y (the movement direction Y of the first inner blade 31).

  (4) In the present embodiment, the second outer blade portion 22 is formed in an arc shape on the side opposite to the first outer blade portion when viewed from the vertical direction of the electric shaver 1 (perpendicular direction to the top surface of the first outer blade portion 21). Since it is convex, it is possible to prevent the second outer blade portion 22 from being caught on the skin when the electric razor 1 is moved while the surface of the first outer blade portion 21 is in contact with the skin, and to move smoothly. Is possible.

  (5) In this embodiment, the outer blade member 12 in which the first outer blade portion 21 and the second outer blade portion 22 are formed is provided. That is, since the 1st outer blade part 21 (1st outer blade) and the 2nd outer blade part 22 (2nd outer blade) consist of the same member, the increase in the number of parts of the electric shaver 1 can be suppressed.

(Second Embodiment)
A second embodiment embodying the present invention will be described below with reference to FIGS. 3 and 4 (a) and 4 (b). In addition, about the structure similar to the said 1st Embodiment, the same code | symbol is attached | subjected and the detailed description is abbreviate | omitted.

  As shown in FIG. 3, the electric razor 50 of the present embodiment includes a first blade block 51 and a second blade block 52 attached to the upper portion of the housing 10. Two first blade blocks 51 are arranged side by side in the front-rear direction X of the electric razor 50. Each first blade block 51 has a first outer blade 61 fixed to the housing 10 via an outer blade cassette 51a at the top thereof. Each first outer blade 61 has substantially the same shape as the first outer blade portion 21 of the first embodiment.

  Each of the first blade blocks 51 includes, as shown in FIGS. 4 (a) and 4 (b), a movable element 62 connected and supported by a driving source (not shown) provided in the electric shaver 1, and the movable element. And a plurality of first inner blades 63 fixed to the upper part of 62. The configurations of the mover 62 and the first inner blade 63 of the present embodiment are substantially the same as those of the first embodiment, and the first inner blade 63 is driven in the width direction Y of the housing 10 by driving of a drive source. And the upper end thereof is in sliding contact with the back surface of the first outer blade 61.

  The second blade block 52 is disposed on both sides of the first blade block 51 in the width direction Y, respectively. Each second blade block 52 has a second outer blade 64 fixed to the housing 10 via an outer blade cassette 52a, and a second inner blade 65 disposed inside the second outer blade. . The second outer blade 64 has a mesh shape in which a large number of introduction holes 64a (see FIG. 4B) are formed in a thin plate-like member. The second outer blade 64 has a semicircular arc shape when viewed in the vertical direction Z, and its upper surface 64b is a plane orthogonal to the vertical direction Z. And the upper surface 64b of the 2nd outer blade 64 has changed to the outer peripheral surface 64d through the inclination part 64c which has a taper shape. That is, at least a part of the inclined portion 64c is inclined toward the width direction Y of the electric shaver 50 (the movement direction Y of the first inner blade 63). In such a second outer blade 64, at least a part of the surface of the inclined portion 64c and the outer peripheral surface 64d faces the outside in the width direction Y (on the side opposite to the first blade block).

  The second inner blade 65 of each second blade block 52 is fixed to the upper surface of the base portion 71, and the base portion 71 is a mover of each first blade block 51 via a link mechanism 72 as a transmission portion. 62 are connected to each other. 4A and 4B, only one movable element 62, base portion 71, and link mechanism 72 are shown for convenience of explanation.

  The link mechanism 72 will be described in detail. On the support pin 73 fixed to the housing 10, a rotation member 74 having a dogleg shape as viewed in the vertical direction Z is rotatably supported. An arcuate base portion 71 is supported at the tip of the member 74. A plurality of second inner blades 65 are fixed on the upper surface of the base portion 71 along the arc shape of the base portion 71. Each second inner blade 65 has a shape corresponding to the second outer blade 64.

  Further, the base portion 71 is biased upward by a compression coil spring 75 provided between the base member 71 and the rotating member 74, whereby the second inner blade 65 is connected to the back surface (the upper surface 64 b and the inclined surface) of the second outer blade 64. It is in pressure contact with the back surface) of the back surface of the portion 64c. Further, a guide hole 74a extending obliquely with respect to the movement direction Y of the mover 62 is formed at a position closer to the base end side than the support pin 73 in the rotating member 74. The insertion pin 76 fixed to is inserted. Thus, each mover 62 is connected to each base portion 71 via the link mechanism 72.

  In the link mechanism 72 configured as described above, when the mover 62 reciprocates linearly in the width direction Y, the driving force is transmitted from the insertion pin 76 of the mover 62 to the rotating member 74, and the rotating member 74 is It reciprocates around the support pin 73 as an axis. As a result, the base portion 71 and the second inner blade 65 reciprocately rotate along the XY plane, and the second inner blade 65 comes into sliding contact with the back surface of the second outer blade 64. The second inner blade 65 cuts the wrinkles and the like introduced from the second outer blade 64 in cooperation with the second outer blade 64.

  Although the electric shaver 50 of this embodiment has some changes compared with the electric shaver 1 of the said 1st Embodiment, it has the effect (1)-(4) described in the said 1st Embodiment. Yes. In addition, in this embodiment, since the 1st and 2nd outer blades 61 and 64 consist of another member, they can be manufactured easily.

In addition, you may change each embodiment of this invention as follows.
-In the said 1st Embodiment, although the 1st outer blade part 21 and the 2nd outer blade part 22 were comprised with the same member (outer blade member 12), you may comprise each with another member. According to such a configuration, the first and second outer blades can be easily manufactured.

In the first embodiment, only one blade block 11 is provided. However, for example, a plurality of blade blocks 11 may be provided in parallel in the front-rear direction X.
-In the said 1st Embodiment, although the 2nd outer blade part 22 was formed in semicircle shape seeing from the up-down direction Z, it is good also as rectangular shape other than this, for example.

-In the said 1st Embodiment, it is good also as a structure which does not provide the 2nd inner blade 32 inside the 1st outer blade part 21. FIG.
In the second embodiment, two first blade blocks 51 are arranged in parallel in the front-rear direction X, but may be one, or three or more may be arranged in parallel.

  -In above-mentioned 2nd Embodiment, although the inclined part 64c was made into planar shape, you may form the round which becomes convex on the outer side. Further, the second outer blade 64 may be configured without the inclined portion 64c, and the corner portion formed by the upper surface 64b and the outer peripheral surface 64d of the second outer blade 64 may be formed at a right angle.

  -You may change the link mechanism 72 as a transmission part in the said 2nd Embodiment into the joint member 80 as a transmission part as shown, for example in FIG. Both end portions of the joint member 80 are connected to one end portion in the movement direction Y of the mover 62 and one end portion of the base portion 71 that can rotate about the support shaft 81, respectively. Is transmitted to the base portion 71 via the joint member 80. According to such a structure, the structure of a transmission part can be simplified and it can contribute to cost reduction. This configuration can be applied to the electric shaver 1 as in the first embodiment.

  In the second embodiment, the second blade block 52 (second outer blade 64) is formed in a semicircular arc shape when viewed from the vertical direction Z, but is a straight line extending along the front-rear direction X of the electric razor 50. (See FIG. 6). In such a configuration, the inclined portion 64c may be formed in a round shape as shown in FIG. 6, and the corner portion formed by the upper surface 64b and the outer surface 64e of the second outer blade 64 is at a right angle. It is good also as a structure (namely, structure without the inclination part 64c). Further, in such a configuration, as shown in FIG. 7, the second inner blade 65 is also formed in a linear shape extending along the front-rear direction X of the electric shaver 50, and the second inner blade 65 is the second outer blade 64. And reciprocates linearly in the front-rear direction X. The second inner blade 65 can cut the wrinkles and the like introduced from the upper surface 64 b and the outer surface 64 e of the second outer blade 64 in cooperation with the second outer blade 64.

  In the second embodiment, the second blade block 52 may be changed to a tubular blade block 91 as shown in FIG. The outer blade 92 of the tubular blade block 91 is formed by bending a cylindrical member, and a plurality of slits are formed on the outer peripheral surface thereof. The inner blade 93 of the tubular blade block 91 has a coil-shaped member formed along the outer blade 92. Such a tubular blade block 91 can be configured without an urging member for pressing the inner blade 93 against the outer blade 92.

The perspective view which shows a part of electric shaver of 1st Embodiment. Schematic which shows the internal structure of the electric shaver of 1st Embodiment. The perspective view which shows a part of electric shaver of 2nd Embodiment. (A) (b) Schematic which shows the internal structure of the electric shaver of 2nd Embodiment. Schematic which shows the internal structure of the electric razor of another example. The perspective view which shows a part of electric shaver of another example. Schematic which shows the internal structure of the electric razor of another example. The perspective view which shows a part of electric shaver of another example.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Electric razor, 11 ... Blade block, 12 ... Outer blade member, 21 ... 1st outer blade part (1st outer blade), 22 ... 2nd outer blade part (2nd outer blade), 22a, 64c ... Inclined part , 31, 63 ... first inner blade, 32, 65 ... second inner blade, 33, 62 ... mover, 41, 72 ... link mechanism as a transmission part, 51 ... first blade block, 52 ... second blade block , 61 ... 1st outer blade, 64 ... 2nd outer blade, 80 ... Joint member as a transmission part, 91 ... Tubular blade block as a 2nd blade block, X ... Front-back direction, Y ... Width direction (1st inside) The direction of movement of the blade), Z ... up and down direction.

Claims (6)

A first inner blade comprising a first inner blade that reciprocates linearly and a mesh-shaped first outer blade that is provided so as to cover the first inner blade and is formed in a curved shape parallel to the movement direction of the first inner blade. Block,
The second inner blade provided on the side of the first blade block in the movement direction of the first inner blade and reciprocatingly and a mesh-shaped second outer blade provided so as to cover the second inner blade. A second blade block,
The electric shaver, wherein the second outer blade is provided such that at least a part of a surface thereof faces the first blade block side. The electric razor according to claim 1,
The first inner blade is fixed to a mover that reciprocates linearly by driving a drive source, and the mover moves between the mover and the second inner blade. An electric razor characterized in that a transmission portion is provided that transmits to the inner blade to reciprocate the second inner blade. The electric shaver according to claim 1 or 2,
The electric shaver, wherein the first outer blade and the second outer blade are made of the same member. The electric shaver according to claim 1 or 2,
The electric shaver, wherein the first outer blade and the second outer blade are made of different members. In the electric shaver according to any one of claims 1 to 4,
The electric razor characterized in that the second outer blade has an inclined portion inclined toward the movement direction of the first inner blade. In the electric shaver according to any one of claims 1 to 5,
The electric shaver, wherein the second outer blade is convex in an arc shape on the side opposite to the first blade block when viewed from the vertical direction of the electric shaver.

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