JP5887511B2 - Electric razor - Google Patents

Description

  The present invention relates to a fixed blade, a movable blade that reciprocates linearly with respect to the fixed blade, a drive source that drives the movable blade, a fixed blade, a movable blade, an apparatus main body that supports the drive source, and an output of the drive source as a movable blade. The present invention relates to a transmission mechanism for transmission and an electric razor including a partition member connected to the transmission mechanism.

  The electric razor of Patent Document 1 has a partition member that suppresses entry of hair, dust, water, and the like (hereinafter, “hair dust”) into a space that accommodates the drive source in the main body.

Japanese Utility Model Publication No. 4-36969

  The partition member of the electric razor is connected to a transmission mechanism that reciprocates linearly. For this reason, a load is applied to the partition member as the transmission mechanism moves.
  The objective of this invention is providing the electric shaver which can reduce the load of a division member.

  One form of the electric razor according to the present invention is a fixed blade, a movable blade that reciprocates linearly with respect to the fixed blade, and a longitudinal direction of the fixed blade in a plan view of the fixed blade is a direction of the reciprocating linear motion of the movable blade. The apparatus main body that supports the movable blade and the fixed blade so as to match, a drive source that is supported by the apparatus main body and drives the movable blade, and an output of the drive source in the longitudinal direction of the apparatus main body. A transmission part for reciprocating linear movement of the movable blade relative to the fixed blade by reciprocating linear movement with respect to the main body, and a base in a direction from the movable blade side to the drive source side in the longitudinal direction of the apparatus main body. At least a proximal-side convex portion projecting in the end direction, and a distal-side convex portion projecting in the distal direction that is a direction from the drive source side toward the movable blade side in the longitudinal direction of the apparatus main body A through-hole into which the transmission part is inserted so as to penetrate the proximal-side convex part or the distal-side convex part, and can be deformed according to the reciprocating linear motion of the transmission part with respect to the apparatus body And a partition member.

According to the electric razor, the load on the partition member is reduced.

These are the perspective views of the electric shaver of embodiment (a: at the time of use, b: at the time of accommodation). These are the figures regarding the electric shaver of FIG. 1 (a: side view, b: sectional view). FIG. 2 is an exploded perspective view of the apparatus main body of FIG. 1. FIG. 3 is an enlarged view of the partition member and the like of FIG. 2 (a: front view, b: side view). FIG. 2 is an exploded perspective view of the head portion of FIG. 1. FIG. 2 is an exploded perspective view of the blade block of FIG. 1. These are the figures regarding the outer blade of FIG. 6 (a: front view, b: plan view, c: DA of a- Sectional view of DA line, enlarged view of area RA of d: b). These are the figures regarding the outer blade holding | maintenance part of FIG. 6 (a: front view, b: top view, c: b Side view seen from arrow AC, side view seen from arrow AD of d: b, sectional view of DB: DB line of e: b). These are the figures regarding the inner blade of FIG. 6 (a: front view, b: plan view, c: DC-b Cross-sectional view of DC line). These are the figures regarding the inner blade holding | maintenance part of FIG. 6 (a: front view, b: top view, c: a DD-DD line sectional view). FIG. 7 is a front view of the outer blade and the outer blade holding portion of FIG. 6 that are coupled (a: before melting, b: After melting, c: sectional view of DE-DE line of b, d: enlarged view of a part of c). FIG. 7 is a front view of the joined inner blade and inner blade holding portion of FIG. 6 (a: before melting, b: after melting). FIG. 2 is a perspective view of the blade block of FIG. 1. FIG. 2 is a diagram relating to the blade block of FIG. 1 (a: plan view, b: DF-DF of a Sectional view of the line, enlarged view of part of c: b). These are the figures regarding the head part of FIG. 1 (a: perspective view, b: plan view). FIG. 2 is a diagram relating to the electric razor in FIG. Sectional view, b: Front view of head link) FIG. 2 is a diagram relating to the electric razor in FIG. Sectional view, b: a plan view of the ZA-ZC plane at a, c: a sectional view with the output shaft rotated 90 ° from the state of a, d: a plan view of the ZA-ZC plane at c). Is a diagram relating to the electric razor of FIG. 1 (a: the output shaft is in the state of c of FIG. 17. (B: a plan view of the ZA-ZC plane at a, c: a cross section of the output shaft rotated 90 ° from the state a, and d: a plan view of the ZA-ZC plane at c)). FIG. 14 is a sectional view taken along line DG-DG in FIG. 14A (a: blade relative position is neutral) B: blade relative position is the maximum pressing position, c: blade relative position is the maximum pulling position). FIG. 2 is a perspective view of the head portion and the like of FIG. 1 (a: before joining, b: after joining). FIG. 17 is a diagram relating to the conversion mechanism of FIG. 16 (a: side view, b: DH-DH of a Cross-sectional view of the line). FIG. 17 is a diagram relating to the conversion mechanism of FIG. 16 (a: the head portion is from the state of FIG. 21; Side view in a rotated state, b: a cross-sectional view of a DI-DI line of a). 16 is a diagram relating to the conversion mechanism of FIG. 16 (a: the head portion is in the state of FIG. 22). Side view in a rotated state, b: a cross-sectional view of DJ-DJ line a). FIG. 16 is a diagram relating to the conversion mechanism of FIG. 16 (a: the head portion is in the state of FIG. 23; Side view in a rotated state, b: sectional view taken along line DK-DK of a). FIG. 16 is a diagram relating to the conversion mechanism of FIG. 16 (a: the head portion is in the state of FIG. 24; Side view in a rotated state, b: sectional view of DL-DL line of a). FIG. 2 is a cross-sectional view of the outer blade block and the skin surface of the electric razor in FIG. 1. These are sectional drawings of the outer blade block and skin surface of a virtual electric razor. FIG. 7 is an exploded perspective view of a modified blade block. These are sectional drawings of the outer blade of a modification. These are sectional drawings of the outer blade of a modification. These are the figures regarding a virtual electric razor (a: top view, b: perspective view).

  (An example of the form that an electric razor can take)
  [1] One embodiment of the electric razor according to the present invention includes a fixed blade, a movable blade that reciprocates linearly with respect to the fixed blade, and a longitudinal direction of the fixed blade that is reciprocated linearly with respect to the fixed blade. An apparatus main body that supports the movable blade and the fixed blade so as to coincide with the direction of the apparatus, a drive source that is supported by the apparatus main body and drives the movable blade, and a longitudinal direction of the apparatus main body by an output of the drive source A reciprocating linear movement with respect to the apparatus main body to cause the movable blade to reciprocate linearly with respect to the fixed blade, and a direction from the movable blade side to the drive source side in the longitudinal direction of the apparatus main body There are few proximal protrusions protruding in the proximal direction and distal protrusions protruding in the distal direction that is the direction from the drive source side to the movable blade side in the longitudinal direction of the apparatus main body. A through-hole into which the transmission part is inserted so as to penetrate the proximal-side convex part or the distal-side convex part, and is deformed according to the reciprocating linear motion of the transmission part with respect to the apparatus body Possible partition members.
  [2] According to an example of the electric razor, the partition member includes a central portion that constitutes the proximal-side convex portion or the distal-end-side convex portion, an outer peripheral portion that is formed so as to surround the central portion, and An edge portion formed around the outer peripheral portion and attached to the inner surface of the apparatus main body is included.
  [3] According to an example of the electric razor, the shape of the edge portion is annular, and the device main body has a groove portion into which the edge portion is fitted.
  [4] According to an example of the electric shaver, an end portion of the edge portion in the longitudinal direction of the apparatus main body protrudes in the tip direction from a connection portion between the outer peripheral portion and the edge portion.
  [5] According to an example of the electric razor, the partition member includes a main body space that is a space in the apparatus main body, a front end side space that is a space in which the movable blade is disposed, and a space in which the driving source is disposed. It is partitioned into a certain proximal side space.
  [6] According to an example of the electric razor, the apparatus main body includes the movable blade and the movable blade so that a longitudinal direction of the fixed blade coincides with a direction of a reciprocating linear motion of the movable blade in a plan view. A head portion that supports the fixed blade is provided, and further includes a cap that covers the head portion by being attached to the apparatus main body.

(Embodiment)
The configuration of the electric razor 1 will be described with reference to FIG.
As shown in FIG. 1 (a), the electric razor 1 protects the apparatus main body 10 gripped by the user, the blade block 60 for shaving the hair attached to the head portion 50 of the apparatus main body 10, and the blade block 60. And a cap 200 to be used. The blade block 60 has only one fixed blade 90. The apparatus main body 10 has an elongated cylindrical shape. Further, when the cap 200 is fitted to the apparatus main body 10, the apparatus main body 10 and the cap 200 have a round bar shape whose outer peripheral surfaces are continuous.
As shown in FIG. 1B, the cap 200 has a structure that can be attached to and detached from the apparatus main body 10. Further, the entire head unit 50 is covered in a state of being attached to the apparatus main body 10.

Here, each direction about the apparatus main body 10 is defined as follows. The axial direction ZA corresponds to the “longitudinal direction of the main body”. Further, the upper ZA1 corresponds to the “tip direction”. Further, the lower ZA2 corresponds to the “proximal direction”.
(A) A direction orthogonal to the axial direction ZA in the front view is defined as a main body lateral direction ZB.
(B) A direction orthogonal to the axial direction ZA and the main body lateral direction ZB is defined as a main body depth direction ZC.
(C) A direction from the main body 10 in the axial direction ZA toward the head unit 50 is defined as an upper ZA1.
(D) A direction from the head portion 50 in the axial direction ZA toward the apparatus main body 10 is defined as a downward ZA2.
(E) The direction from the front of the main body 10 to the back in the main body depth direction ZC is defined as a rear ZC2.
(F) A direction from the back surface to the front surface of the main body 10 in the main body depth direction ZC is defined as a front ZC1.

With reference to FIG. 2, the structure of the apparatus main body 10 is demonstrated.
As shown in FIG. 2A, the apparatus main body 10 has a stepped portion that comes into contact with the end surface of the cap 200 in FIG. 1 at an intermediate portion in the axial direction ZA. The length of the apparatus body 10 in the axial direction ZA is larger than the length of the head unit 50 in the axial direction ZA.

  As shown in FIG. 2B, the apparatus main body 10 includes a main body case 10A having a main body space RA for housing various components, a secondary battery 17 serving as a power source for the electric razor 1, and a blade block 60. It has the drive device 20 which drives the movable blade 100 (refer FIG. 5), and the head part 50 by which the blade block 60 is engage | inserted. In addition to this, the conversion mechanism 30 that converts the rotation of the electric motor 21 of the drive device 20 into a reciprocating linear motion and transmits the reciprocating linear motion to the head unit 50, and the wiring member 40 that electrically connects the secondary battery 17 and the drive device 20. And have. In addition to this, a dust-proof rubber 16 that suppresses the entry of foreign matter into the apparatus main body 10 and a power switch 18 that switches between driving and stopping of the driving device 20 are provided.

  The head unit 50 projects from the apparatus main body 10 so as to extend upward ZA1. Moreover, it is formed in a rectangular parallelepiped shape with a diameter smaller than the diameter of the apparatus main body 10. The head unit 50 includes a head case 50A that accommodates and supports various components, and a release button 55 for removing the blade block 60 fixed to the front surface of the head case 50A from the head case 50A. In addition, a relay member 54 that reciprocates linearly with the force transmitted from the conversion mechanism 30 and a head link 53 that transmits the force transmitted from the relay member 54 to the blade block 60 are provided. The relay member 54 and the head link 53 are located inside the head case 50A.

  The dust-proof rubber 16 is fitted into a groove 12 </ b> A formed on the inner surface of the second case 12. The main body space RA in the apparatus main body 10 is partitioned by a dust-proof rubber 16 into a base end side space RB on the lower ZA2 side and a front end side space RC on the upper ZA1 side. The proximal end side space RB accommodates the electric motor 21. Further, the distal end side space RC accommodates a part of the blade block 60.

A detailed configuration of the apparatus main body 10 will be described with reference to FIG.
In addition to the drive device 20 and the like, the device main body 10 includes a contact fitting 19 that switches electrical connection and disconnection between the secondary battery 17 and the drive device 20.

  The power switch 18 is clicked by the user when operating the power switch 18, an operation portion 18 A operated by the user, an attachment portion 18 B to which the contact fitting 19 is attached, an operation surface 18 C positioned outside the main body case 10 A, and the power switch 18. And a click portion 18D for imparting a feeling. The power switch 18 is located in the front portion of the apparatus main body 10.

  The secondary battery 17 is accommodated on the lower ZA2 side in the main body space RA. The electric motor 21 is accommodated in the main body space RA at a position adjacent to the secondary battery 17 and a position above the secondary battery 17 on the ZA1 side.

  The power switch 18 is supported so as to be slidable in the axial direction ZA of the apparatus main body 10 at the center of the apparatus main body 10 in the axial direction ZA. The power switch 18 starts or stops supplying power to the motor 21 by sliding. The state of the motor 21 is switched to either the operation state or the stop state according to the power switch 18. That is, the state of the drive device 20 is driven and stopped according to the position of the power switch 18.

  The main body case 10 </ b> A has an upper ring 14 and a lower ring 15 for fixing the first case 11 and the second case 12 to each other in addition to the first case 11, the second case 12, and the third case 13.

  The drive device 20 includes an electric motor 21 having an output shaft 22, a rotation member 23 having the same axis as the output shaft 22, an eccentric shaft 24 having a center line eccentric to the rotation member 23, and rotation of the drive device 20. And a roller 25 that transmits to the conversion mechanism 30. The rotating member 23 is fixed to the output shaft 22. The eccentric shaft 24 is fixed to the rotating member 23. The roller 25 is supported by the eccentric shaft 24 so as to be rotatable with respect to the eccentric shaft 24. The output shaft 22 corresponds to an “output unit”.

  The center line of the eccentric shaft 24 is parallel to the direction of the center line of the output shaft 22. Further, when the operation surface 18C of the power switch 18 is regarded as a virtual plane along the axial direction ZA and the body lateral direction ZB, the center line of the eccentric shaft 24 is parallel to the virtual plane.

  The conversion mechanism 30 has three links that convert the rotation of the output shaft 22 into a linear motion in the axial direction ZA, that is, the first link 31, the second link 32, the third link 33, and the rotation center of the first link 31. Support shaft 34.

  The first link 31 includes a rotation shaft 31C that rotates around the support shaft 34, an input portion 31D that supports the roller 25, a first arm 31A that connects the input portion 31D and the rotation shaft 31C, and the rotation shaft 31C. It has the 2nd arm 31B which protrudes in the 2nd link 32 side. The inner peripheral surface of the input portion 31 </ b> D supports the roller 25 while being in contact with the outer peripheral surface of the roller 25.

  The rotating shaft 31C, the input portion 31D, the first arm 31A, and the second arm 31B are formed as an integral part from the same resin material. The first arm 31A and the second arm 31B protrude in different directions in the circumferential direction of the rotation shaft 31C. The rotation shaft 31C is supported by the support shaft 34 in a state where the rotation shaft 31C can rotate with respect to the support shaft 34. The direction of the center line of the support shaft 34 is orthogonal to the direction of the center line of the eccentric shaft 24.

  The second link 32 has a rhombus shape in plan view in the axial direction ZA and the body depth direction ZC. The input end portion 32A of the second link 32 is connected to the second arm 31B so as to be rotatable with respect to the second arm 31B. The output end 32 </ b> B of the second link 32 is connected to the third link 33 in a state where the rotation with respect to the third link 33 is possible.

  The third link 33 includes a link shaft 33B extending in the axial direction ZA, a fixing plate 33A for fixing to the head unit 50 in FIG. 5, and a protruding ring 33C and a supporting convex portion 33D for fixing the dust-proof rubber 16. Have. The fixed plate 33A is formed at the end of the link shaft 33B on the upper ZA1 side. The protruding ring 33C and the support convex portion 33D are formed at an intermediate portion in the axial direction ZA of the link shaft 33B. The third link 33, the head link 53, and the relay member 54 correspond to a “transmission unit”.

  The first case 11 includes a shaft fixing portion 11 </ b> A for fixing the support shaft 34, a shaft guide portion 11 </ b> B that guides the movement of the third link 33, and a support portion 11 </ b> C that supports the third link 33.

  The wiring member 40 includes an anode fitting 41 connected to the anode of the secondary battery 17, a cathode fitting 42 connected to the cathode of the secondary battery 17, and a motor fitting 43 connected to the electric motor 21. In addition, a circuit board 45 that electrically connects corresponding metal fittings and a board metal fitting 44 that is electrically connected to the circuit board 45 are provided. The circuit board 45 has a current fuse 46 that cuts off the electrical connection between the electric motor 21 and the secondary battery 17 when the electric motor 21 is short-circuited. The anode fitting 41, the cathode fitting 42, the motor fitting 43, the circuit board 45, and the board fitting 44 are fixed to the first case 11.

  The anode fitting 41 is electrically connected to the electric motor 21. The cathode fitting 42 is electrically connected to the circuit board 45. The contact fitting 19 of the power switch 18 is connected to the motor fitting 43 and the board fitting 44.

  As described above, the wiring member 40 includes the anode of the secondary battery 17, the anode fitting 41, the electric motor 21, the motor fitting 43, the contact fitting 19, the board fitting 44, the circuit board 45, the cathode fitting 42, and the cathode of the secondary battery 17. An electric circuit through which current flows is formed in this order.

With reference to FIG. 4, the structure of the dust-proof rubber 16 is demonstrated.
As shown in FIG. 4A, the dust-proof rubber 16 includes a central portion 16A, an outer peripheral portion 16B formed outside the central portion 16A, and an edge portion 16C formed outside the outer peripheral portion 16B. Have Moreover, it has the through-hole 16P in the part inside the center part 16A. The central portion 16A has a shape in which the central portions in the main body lateral direction ZB and the main body depth direction ZC protrude to the uppermost ZA1 side. The outer peripheral portion 16B has a shape that protrudes upward ZA1 as it goes outward. The size of the edge portion 16C in the axial direction ZA is larger than the size of the central portion 16A and the outer peripheral portion 16B in the axial direction ZA. The end portion on the upper ZA1 side of the edge portion 16C is positioned on the upper ZA1 side than the upper ZA1 side end portion of the outer peripheral portion 16B in contact with the edge portion 16C. The central portion 16A corresponds to a “tip-side convex portion”.

The relationship between the dustproof rubber 16 and other members will be described.
The edge portion 16 </ b> C is fitted into the groove portion 12 </ b> A of the second case 12. The link shaft 33B of the third link 33 is inserted into the through hole 16P. The inner end portion of the central portion 16A is fitted between the protruding ring 33C of the third link 33 and the support convex portion 33D. That is, the dustproof rubber 16 is fixed to the second case 12 and the third link 33.

A detailed configuration of the head unit 50 will be described with reference to FIG.
In addition to the head case 50 </ b> A, the head unit 50 includes a relay member 54 connected to the third link 33 of the conversion mechanism 30 of FIG. 3 and a head link 53 connected to the relay member 54. In addition to this, a blade block insertion hole 50X for inserting the blade block 60 and a release button 55 for removing the blade block 60 from the head case 50A are provided.

  The blade block insertion hole 50 </ b> X and the release button 55 are located in front of the head unit 50. The release button 55 is positioned in the vicinity of the lower ZA2 side end of the blade block insertion hole 50X in the axial direction ZA. The release button 55 is supported in a slidable state in the axial direction ZA of the apparatus main body 10.

  The head case 50A has two cases, that is, a first case 51 and a second case 52. The first case 51 includes an insertion portion 51A inserted into the first case 11, a link guide portion 51B that guides the movement of the head link 53, and a relay guide portion 51C that guides the movement of the relay member 54. The first case 51 includes a blade block insertion portion 51X, a recess 51Y (see FIG. 1) formed in a portion adjacent to the blade block insertion portion 51X, and a rib 51L for restricting the mounting direction of the blade block 60. And have. The second case 52 has a blade block insertion portion 52X and a recess 52Y formed in a portion adjacent to the blade block insertion portion 52X. The blade block insertion portion 51X and the blade block insertion portion 52X form a blade block insertion hole 50X.

  As shown in FIG. 5, the insertion portion 51A has a guide groove 51D that guides the movement of the relay member 54 in the axial direction ZA. The relay guide portion 51C has a pair of walls that are opposed to each other through a gap. The link guide portion 51B has a pair of walls that are opposed to each other through a gap. The formation position of the link guide portion 51B is inclined from the front ZC1 to the rear ZC2 in the body depth direction ZC as it goes from the lower ZA2 in the axial direction ZA to the upper ZA1. The second case 52 has a link guide portion (not shown) having the same shape as the link guide portion 51B at a position corresponding to the link guide portion 51B of the first case 51.

  The relay member 54 includes a connection portion 54A connected to the head link 53, a guide portion 54B that guides the tip portion of the third link 33, and a fixed portion to which the fixing plate 33A of the third link 33 in FIG. 3 is fixed. 54C and a pair of protrusions 54D fitted in the respective guide grooves 51D.

  The head link 53 includes a relay connection portion 53A connected to the connection portion 54A of the relay member 54, a blade connection portion 53B connected to the blade block 60, and a pair of protrusions 53C that move in the link guide portion 51B. .

  The relay connection portion 53A is connected to the connection portion 54A so as to be rotatable with respect to the relay member 54. The blade connection portion 53B is connected to the blade block 60 in a state in which the blade connection portion 53B cannot rotate with respect to the blade block 60.

With reference to FIG. 6, the detailed structure of the blade block 60 is demonstrated.
Here, each direction about the blade block 60 is defined as follows.
(A) The moving direction of the movable blade 100 with respect to the fixed blade 90 is a vertical direction WA.
(B) A direction orthogonal to the vertical direction WA in plan view is defined as a horizontal direction WB.
(C) A direction perpendicular to the vertical direction WA and the horizontal direction WB is defined as a depth direction WC.
(D) A direction from the main body case side to the front end side in the longitudinal direction WA is defined as a pressing method WA1.
(E) A direction from the front end side of the longitudinal direction WA toward the main body case side is defined as a pulling direction WA2.
(F) A direction from the connecting portion of the movable blade holding portion in the depth direction WC toward the shaved surface is defined as a front WC1.
(G) A direction from the shaved surface in the depth direction WC toward the connecting portion of the movable blade holding portion is defined as a back side WC2.

  In the plan view of the blade block 60, the longitudinal direction WA coincides with the axial direction ZA. As shown in FIG. 2, the extension line E2 of the outer surface of the head portion 50 on the front ZC1 side and the extension line E2 of the shaving surface 90A of the fixed blade 90 are connected to the extension line E1 of the outer surface of the apparatus body 10 on the front ZC1 side. In contrast, it is inclined at an angle X. That is, the longitudinal direction WA has a predetermined inclination angle with respect to the axial direction ZA on the planes of the axial direction ZA and the body depth direction ZC. For example, 10 degrees is set as the angle X.

  The blade block 60 includes a fixed blade 90 that guides body hair to a space inside the fixed blade holding unit 70, and a movable blade 100 that reciprocates linearly with respect to the fixed blade 90. In addition to this, the fixed blade 90 is supported from the back WC 2, the movable blade 100 is supported from the back WC 2, and the movable blade 100 is fixed via the movable blade holder 80. And two springs 61 that press against the blade 90.

  The fixed blade 90 and the fixed blade holding part 70 are fixed to each other when the four fixed blade fixing parts 74A formed on the outer surface of the fixed blade holding part 70 are melted. The movable blade 100 and the movable blade holding portion 80 are fixed to each other by melting the four movable blade fixing portions 85 formed on the outer surface of the movable blade holding portion 80. FIG. 6 shows a state before each fixed blade fixing portion 74A and each movable blade fixing portion 85 is melted.

  The set of the movable blade 100 and the movable blade holding portion 80 can move in the vertical direction WA with respect to the set of the fixed blade 90 and the fixed blade holding portion 70. When the pair of the movable blade 100 and the movable blade holding portion 80 is moved with respect to the fixed blade 90 and the fixed blade holding portion 70, the spring 61 is configured so that each end portion of the spring 61 has the fixed blade holding portion 70 and the movable blade holding portion 80. It is deformed in the vertical direction WA while maintaining the fixed state.

With reference to FIG. 7, the detailed structure of the fixed blade 90 is demonstrated.
The fixed blade 90 is formed by bending a metal plate into a U shape. The size of the fixed blade 90 in the lateral direction WB is larger than the size of the movable blade 100 (see FIG. 6) in the lateral direction WB.

  The fixed blade 90 extends in the lateral direction WB to form a flat shaved surface 90A, and extends from the one end and the other end in the lateral direction WB of the top 91 toward the back WC2. And two fixed blade side walls 92. In addition to this, the fixed blade 90 has a plurality of slits 93 formed from the top portion 91 to each fixed blade side wall 92. Each slit 93 extends in parallel with the horizontal direction WB, has both ends closed and a continuous shape from one end to the other end. A blade portion 94 is formed between adjacent slits 93. The top portion 91 has support bars 91 </ b> A outside the slits 93 at both ends in the longitudinal direction WA. The width in the vertical direction WA of the support bar portion 91 </ b> A is larger than the width in the vertical direction WA of the blade portion 94. Both ends of the support bar portion 91 </ b> A and the blade portion 94 are supported by the fixed blade side wall 92. The fixed blade side wall 92 of the fixed blade 90 supports the blade portion 94 and the support bar portion 91 </ b> A perpendicular to the top portion 91.

  As shown in FIG. 7 (a), the fixed blade side wall 92 includes two foot portions 95 formed at the end portion on the pressing WA1 side and the end portion on the pulling WA2 side of the fixed blade side wall 92, and a fixed blade. And a first positioning portion 98 formed at an intermediate portion of the side wall 92 in the longitudinal direction WA. Each foot portion 95 corresponds to a portion of the fixed blade side wall 92 that protrudes to the backmost side WC2. Each foot portion 95 includes a fixing portion 96 that is formed as a through hole that is open on the back side WC 2 side, and a hook hooking portion 97 that is formed continuously with the fixing portion 96. The fixed blade 90 has a structure similar to the structure of the fixed blade side wall 92 described in detail above also in the fixed blade side wall 92 opposite to the fixed blade side wall 92 shown in FIG. 7A in the lateral direction WB. .

  As shown in FIG. 7B, each blade portion 94 of the top portion 91 includes two blade end portions 94B that form both end portions in the lateral direction WB of the blade portion 94, one of the blade end portions 94B, and the blade end. A blade intermediate portion 94A located between the other portions of the portion 94B. The slit 93 of the top portion 91 includes two slit end portions 93B that form both end portions in the horizontal direction WB, and a slit intermediate portion 93A that is positioned between one of the slit end portions 93B and the other of the slit end portions 93B.

  As shown in FIG. 7C, the thickness of the blade portion 94 of the blade intermediate portion 94A is smaller than the thickness of each blade end portion 94B. Fixed blade side wall 92 includes arc portion 92A that is continuous with apex portion 91, and linear wall portion 92B that is continuous with arc portion 92A and extends in depth direction WC. The arc portion 92 </ b> A is formed across the fixed blade side wall 92 and the top portion 91. As shown in FIG. 6, the thickness of the thin portion 91B corresponding to the blade intermediate portion 94A in the support bar portion 91A is equal to the thickness of the blade intermediate portion 94A. Further, the thickness of the thick portion 91C corresponding to the blade end portion 94B in the support bar portion 91A is equal to the thickness of the blade end portion 94B.

  As shown in FIG. 7D, the blade end portion 94B has an inclined portion 94C in which the size of the blade portion 94 in the longitudinal direction WA (hereinafter referred to as “blade width”) gradually decreases as it goes outward in the lateral direction WB. And a straight line portion 94D having the smallest blade width. The blade middle portion 94A has a linear shape. The blade width of the blade intermediate portion 94A (hereinafter, “intermediate blade width BA”) is constant throughout. Further, the blade width of the straight portion 94D (hereinafter referred to as “end blade width BD”) is constant.

  The intermediate blade width BA is larger than the size in the longitudinal direction WA of the slit intermediate portion 93A corresponding to the blade intermediate portion 94A (hereinafter referred to as “intermediate slit width SA”). The end blade width BD is smaller than the size of the slit 93 end corresponding to the straight line portion 94D in the vertical direction WA (hereinafter referred to as “end slit width SD”). The end slit width SD is larger than the intermediate slit width SA.

With reference to FIG. 8, the detailed structure of the fixed blade holding | maintenance part 70 is demonstrated. FIG. 8 shows a state before each fixed blade fixing portion 74A is melted.
The fixed blade holding unit 70 includes a frame body 71 into which the fixed blade 90 (see FIG. 6) is fitted, and a fixed portion 73 that fixes each spring 61 (see FIG. 6). The frame 71 and the fixed portion 73 are formed as an integral part from the same resin material.

  As shown in FIG. 8A, the frame body 71 includes a projecting portion 71 </ b> B projecting in the front direction WC <b> 1 at each of both end portions in the lateral direction WB of the frame body 71 and both end portions in the lateral direction WB of the frame body 71. Each has a guiding portion 72 for guiding hair to each slit 93. In addition to this, as shown in FIG. 8B, a fixed blade insertion hole 71A for fitting the fixed blade 90 is provided.

  Each protrusion 71B has a flat surface 71C at the end opposite to the fixed blade insertion hole 71A in the lateral direction WB. As shown in FIG. 8D, both end portions of the lateral direction WB excluding the projecting portion 71B of the frame body 71 are directed from the front side WC1 toward the back side WC2 as the end surface on the front side WC1 side goes from the inside to the outside. Inclined.

As shown in FIG. 8B, the guide portion 72 is configured by a plurality of combs 72A protruding in the front direction WC1 at predetermined intervals in the longitudinal direction WA, and a frame body 71 as a base end portion.
As shown in FIG. 8A, the fixed portion 73 has two wall portions 74 formed at both ends in the longitudinal direction WA, and is continuous with each wall portion 74 and on the back side WC2 side of the fixed blade holding portion 70. And two leg portions 75 formed at the ends of the two. As shown in FIG. 8B, the fixed portion 73 has two back side support portions 73A that protrude inward in the vertical direction WA inside the fixed portion 73 and support the fixed blade 90 from the back side WC2 side. Each back support portion 73A has two thick opposing portions 73B formed at both ends in the lateral direction WB and a thin opposing portion 73C formed between each thick opposing portion 73B. As shown in FIG. 8E, the thin facing portion 73C is recessed closer to the back WC2 side than the thick facing portion 73B.

  As shown in FIG. 8A, each wall portion 74 is adjacent to the two fixed blade fixing portions 74A and the fixed blade fixing portions 74A that are formed near the end faces in the horizontal direction WB and the both ends in the vertical direction WA. It has a hook 74B formed at a matching position, and a second positioning portion 74C formed at the end surface in the horizontal direction WB and at the center in the vertical direction WA. The fixed blade fixing portion 74A and the hook 74B protrude outward in the lateral direction WB. The fixed blade fixing portion 74A and the hook 74B are formed continuously. Moreover, it has the lower end opposing part 74D which protrudes in the outer side of the horizontal direction WB in the edge part by the side of back WC2. Note that the fixed blade holding portion 70 is also provided on the end surface of the wall portion 74 in the lateral direction WB shown in FIG. 8A and the end surface of the wall portion 74 on the opposite side in the lateral direction WB. It has a symmetrical structure.

  Each foot 75 has a spring fixing portion 75A that fixes one of the springs 61 (see FIG. 6). As shown in FIG. 8D, the foot 75 on the side of the pressing method WA <b> 1 has a groove 75 </ b> B for attaching the blade block 60 to the head unit 50 in a normal direction. As shown in FIG. 8C, the foot 75 on the pulling WA2 side does not have the groove 75B. The groove 75B corresponds to the rib 51L (see FIG. 5) of the head unit 50.

  As shown in FIG. 8A, the fixed blade fixing portion 74A on the pressing side WA1 side is formed closer to the pressing side WA1 and the front side WC1 than the spring fixing portion 75A on the pressing side WA1. The fixed blade fixing portion 74A on the pulling WA2 side is formed on the pulling WA2 side and the front WC1 side with respect to the spring fixing portion 75A on the pulling WA2 side.

  As shown in FIG. 8C and FIG. 8D, each wall portion 74 has a first discharge hole 76 for discharging the hair inside the fixed blade holding portion 70 to the outside of the fixed blade holding portion 70. Have Each first discharge hole 76 penetrates the wall portion 74 in the longitudinal direction WA.

  As shown in FIG. 8B, each foot 75 has a second discharge hole 77 for discharging the hair inside the fixed blade holding part 70 to the outside of the fixed blade holding part 70. Each second discharge hole 77 penetrates the foot 75 in the depth direction WC. In each foot 75, a spring moving space 78 for moving the spring 61 (see FIG. 6) is formed at a portion corresponding to each fixed blade fixing portion 74A (see FIG. 8 (a)). Each spring movement space 78 and each first discharge hole 76 form one continuous hole along the vertical direction WA.

With reference to FIG. 9, the detailed structure of the movable blade 100 is demonstrated.
The movable blade 100 is formed by bending a metal plate into a U shape. The size of the movable blade 100 in the lateral direction WB is smaller than the size of the fixed blade 90 in the lateral direction WB.

  The movable blade 100 includes a top 101 that extends in the lateral direction WB and contacts the fixed blade 90 on the surface on the front WC1 side, and two movable blade sidewalls 102 that extend from the end of the top 101 in the lateral WB to the back WC2. Have. In addition, a plurality of slits 103 formed from the top portion 101 to each movable blade side wall 102 are provided. Each slit 103 extends while being inclined with respect to the lateral direction WB. The blade portion 104 is formed between the adjacent slits 103 and at the end portion of the pressing method WA1 and the end portion of the pulling method WA2.

  As shown in FIG. 9A, each movable blade side wall 102 has two feet 105. Each foot portion 105 corresponds to a portion of the movable blade side wall 102 that protrudes to the backmost side WC2. Each foot portion 105 includes a through hole fixing portion 106 whose back WC2 side is opened, and a hook hooking portion 107 formed continuously with the fixing portion 106. In addition, the movable blade 100 has the same structure as the movable blade side wall 102 described in detail above also on the movable blade side wall 102 opposite to the movable blade side wall 102 shown in FIG. 9A in the lateral direction WB.

  As shown in FIG. 9B, the slits 103 have a certain size in the longitudinal direction WA in the plan view of the movable blade 100. In a plan view of the movable blade 100, the blade portion 104 has a certain size in the longitudinal direction WA.

With reference to FIG. 10, the detailed structure of the movable blade holding | maintenance part 80 is demonstrated. FIG. 10 shows a state before each movable blade fixing portion 85 is melted.
The movable blade holding portion 80 includes a support 81 fitted into the movable blade 100 (see FIG. 6), a connecting portion 82 coupled to the blade connecting portion 53B (see FIG. 5) of the head link 53, and each spring 61 (see FIG. 6), and two foot fixing portions 83 for fixing the movable blade 100 (see FIG. 6). In addition to this, there is a movement restricting portion 87 that contacts the inside of the fixed blade 90 (see FIG. 6). The movable blade holding portion 80 is formed as an integral part from the same resin material.

  As shown in FIG. 10B, the connecting portion 82 is formed at the center of the movable blade holding portion 80 in the longitudinal direction WA. As shown in FIG. 10C, the connecting portion 82 is formed as a notch for fitting the blade connecting portion 53 </ b> B (see FIG. 5) of the head link 53.

  As shown in FIG. 10A, each foot portion 84 includes a movable blade fixing portion 85 formed on the end surface in the lateral direction WB and a hook 86 formed at a position adjacent to the movable blade fixing portion 85. Have. The movable blade fixing portion 85 and the hook 86 are formed continuously. As shown in FIG. 10B, each movable blade fixing portion 85, each hook 86, and each movement restricting portion 87 protrude outward in the lateral direction WB. In addition, the movable blade holding part 80 has the same structure as the structure of the foot part 84 described in detail above also on the end face in the lateral direction WB shown in FIG. 10A and the end face on the opposite side in the lateral direction WB.

The connection relationship between the fixed blade 90 and the fixed blade holding unit 70 will be described with reference to FIG. In addition, Fig.11 (a) has shown the state before each fixed blade fixing | fixed part 74A is fuse | melted.
As shown in FIG. 11A, the size of the fixed blade 90 in the vertical direction WA is smaller than the size of the fixed blade holding unit 70 in the vertical direction WA. The fixed blade 90 and the fixed blade holding portion 70 are fixed in a state where the central portions in the vertical direction WA are aligned with each other.

  The fixed blade 90 is inserted into the fixed blade insertion hole 71 </ b> A of the fixed blade holding portion 70 in a state where each second positioning portion 74 </ b> C is fitted in each first positioning portion 98. Each fixed blade fixing portion 74 </ b> A is inserted into each fixing portion 96. Each hook 74 </ b> B is inserted into each hook catching portion 97. Each blade portion 94 is disposed at a position corresponding to each comb 72 </ b> A of the guide portion 72. The pitch of each comb 72 </ b> A is equal to the pitch of the slits 93. Each slit 93 is located between the combs 72A.

  The clearance between each fixed blade fixing portion 74A and each fixing portion 96 before melting is larger than the clearance between the first positioning portion 98 and the second positioning portion 74C. Further, the clearance between the hook 74B and the hook hooking portion 97 is larger than the clearance between the first positioning portion 98 and the second positioning portion 74C. Thereby, the relative position of the vertical direction WA of the fixed blade 90 and the fixed blade holding | maintenance part 70 is positioned by the 1st positioning part 98 and the 2nd positioning part 74C.

  The end surface of the back side WC2 of each foot portion 95 of the fixed blade 90 faces the end surface of the front side WC1 of the facing portion 74D of each fixed blade holding portion 70 via a clearance. As shown in FIG. 11C, a part of the surface of the back side WC2 of the thick portion 91C of the support bar portion 91A is in contact with the back side support portion 73A. Specifically, as shown in FIG. 11D, the surface of the back WC2 of the thick portion 91C of the support bar portion 91A is in contact with the thick facing portion 73B of the back support portion 73A. The surface of the back side WC2 of the thin wall portion 91B of the support bar portion 91A is opposed to the thin wall facing portion 73C of the back side support portion 73A via a clearance. Thereby, the relative position of the fixed blade 90 and the fixed blade holding part 70 in the depth direction WC is positioned by the thick part 91C and the thick opposing part 73B.

  As shown in FIG. 11B, the fixed blade fixing portion 74A is melted after the state of FIG. 11A is set. Thereby, the fixed blade 90 and the fixed blade holding | maintenance part 70 are mutually fixed. The hook 74B limits the movement of the fixed blade fixing portion 74A.

With reference to FIG. 12, the connection relationship between the movable blade 100 and the movable blade holding portion 80 will be described. In addition, Fig.12 (a) has shown the state before each movable blade fixing | fixed part 85 is fuse | melted.
As shown in FIG. 12A, the size of the movable blade 100 in the vertical direction WA is slightly smaller than the size of the movable blade holding portion 80 in the vertical direction WA. The movable blade 100 and the movable blade holding portion 80 are fixed in a state where the central portions in the vertical direction WA are aligned with each other.

  As shown in FIG. 12A, the movable blade 100 is fitted into the support body 81. Each movable blade fixing portion 85 is inserted into each fixing portion 106. Each hook 86 is inserted into each hook hooking portion 107.

  As shown in FIG. 12B, each movable blade fixing portion 85 is melted after setting the state of FIG. Thereby, the movable blade 100 and the movable blade holding | maintenance part 80 are mutually fixed. The hook 86 limits the movement of the movable blade fixing portion 85.

The assembly procedure of the blade block 60 will be described with reference to FIGS. 11 and 12.
(A1) The movable blade 100 is attached to the movable blade holding portion 80 (see FIG. 12A).
(A2) Each movable blade fixing | fixed part 85 is fuse | melted (refer FIG.12 (b)).
(A3) The movable blade holding portion 80 and the fixed blade holding portion 70 are connected by the springs 61.
(A4) The fixed blade 90 is attached to the fixed blade holding portion 70 (see FIG. 11A).
(A5) Each fixed blade fixing portion 74A is melted (see FIG. 11B).

With reference to FIG. 13 and FIG. 14, the relationship of each member of the blade block 60 is demonstrated.
The movable blade 100 moves in the vertical direction WA with respect to the fixed blade 90 as the electric motor 21 (see FIG. 2) rotates. The position of the movable blade 100 with respect to the fixed blade 90 (hereinafter referred to as “blade relative position”) is from a “maximum push position” that is a limit position of the push method WA1 to a “maximum pull position” that is a limit position of the pull method WA2. It varies in the range. FIG. 13 and FIG. 14 show a state of “neutral position” where the blade relative position is a neutral position between the maximum pushing position and the maximum pulling position.

  As shown in FIG. 13, the set of the movable blade 100 and the movable blade holding portion 80 is inserted into the fixed blade 90 and the fixed blade holding portion 70. The spring fixing portion 83 of the movable blade holding portion 80 is inserted into the end portion of the front side WC1 of each spring 61.

  The spring fixing portion 75A of the fixed blade holding portion 70 is inserted into the end portion of the back side WC2 of each spring 61. As a result, the fixed blade holding unit 70 and the movable blade holding unit 80 are connected to each other via the springs 61.

  Each spring 61 is positioned between the fixed blade holding portion 70 and the movable blade holding portion 80 in a state of being compressed and deformed. The restoring force of each spring 61 acts in the direction of pushing the movable blade 100 toward the fixed blade 90. For this reason, the surface of the movable blade 100 on the front WC1 side is in contact with the surface of the fixed blade 90 on the back WC2 side.

  As shown in FIG. 14A, when the blade relative position is the neutral position, all the blade portions 94 of the fixed blade 90 overlap at least a part of the blade portion 104 of the movable blade 100 in plan view. Further, from one end portion of the movable blade 100 in the lateral direction WB to the other end portion, that is, the top portion 101 overlaps the blade intermediate portion 94A.

  As shown in FIG. 14B, each fixed blade side wall 92 and each movable blade side wall 102 face each other through a gap. Further, each movement restricting portion 87 of the movable blade holding portion 80 faces the inner wall surface of the fixed blade side wall 92 through a minute gap. The gap between the inner wall surface of the fixed blade side wall 92 and each movement restricting portion 87 is smaller than the gap between each fixed blade side wall 92 and each movable blade side wall 102. For this reason, when the movable blade 100 moves in the lateral direction WB, the movable blade side wall 102 contacts the movement restricting portion 87.

  As shown in FIG. 14A, each comb 72 </ b> A of each guide portion 72 corresponds to all the blade portions 94 of the fixed blade 90. As shown in FIG. 14C, the comb 72A has a tip 72C that is an end on the front WC1 side, and a curved surface 72B formed at a corner of the tip 72C. Each distal end portion 72C is disposed on the back WC2 side with respect to the surface on the back WC2 side of the blade intermediate portion 94A. The diameter of the curved surface portion 72B is sufficiently smaller than the diameter of the arc portion 92A of the fixed blade 90. Further, as shown in FIG. 14A, the protrusions 71B are opposed to each other via the fixed blade 90 in the lateral direction WB.

The relationship between the head unit 50 and the blade block 60 will be described with reference to FIG.
When the blade block 60 is fitted in the blade block insertion hole 50X of the head portion 50, the concave portion 51Y of the first case 51 and the concave portion 52Y of the second case 52 are respectively arranged at positions corresponding to the protruding portions 71B. Thereby, each protrusion part 71B protrudes outside the recessed parts 51Y and 52Y in the horizontal direction WB. Each protrusion 71B and the recesses 51Y and 52Y constitute a finger holding structure for the user to pinch the blade block 60.

  The frame body 71 of the blade block 60 and the top 91 of the fixed blade 90 protrude from the blade block insertion hole 50X when the blade block 60 is fitted in the blade block insertion hole 50X of the head unit 50.

With reference to FIG. 16, the relationship of each component of the electric shaver 1 is demonstrated. In FIG. 16B, the fixed blade 90 and the fixed blade holding portion 70 are omitted.
(A) The roller 25 is connected to the input portion 31 </ b> D of the first link 31.
(B) The second arm 31 </ b> B of the first link 31 is connected to the second link 32.
(C) The output side end of the second link 32 is connected to the third link 33.
(D) The fixed plate 33 </ b> A of the third link 33 is connected to the relay member 54.
(E) The connecting portion 54 </ b> A of the relay member 54 is connected to the head link 53.
(F) The blade connection portion 53 </ b> B of the head link 53 is connected to the connecting portion 82.
(G) The blade connection portion 53 </ b> B is disposed on the center line C <b> 1 of the apparatus main body 10.
(H) The blade connection portion 53 </ b> B is disposed on the rotation center line C <b> 2 of the electric motor 21.
(I) The center line C1 of the apparatus body 10 and the rotation center line C2 of the electric motor 21 coincide.

  As shown in FIG. 16A, the electric razor 1 has the above connection relation, so that the conversion mechanism 30 converts the rotation of the output shaft 22 of the electric motor 21 into a reciprocating linear motion by the conversion mechanism 30. Is transmitted to the blade block 60 via the relay member 54 and the head link 53.

  As shown in FIG. 16 (b), the head link 53 includes a first portion 53X along the axial direction ZA and an end portion of the upper portion ZA1 of the first portion 53X toward the front ZC1 and the front WC1, and blade connection. It has the 2nd part 53Y containing the part 53B and the protrusion 53C, and the 3rd part 53Z which goes to the front ZC1 and the front WC1 from the edge part of ZA2 below the 1st part 53X. The relay member 54 connected to the relay connection portion 53A has a shape along the axial direction ZA.

  The blade connecting portion 53B is fitted into the connecting portion 82 of the movable blade holding portion 80. Both end surfaces of the blade connecting portion 53B in the longitudinal direction WA are in contact with the connecting portion 82. The end surface of the blade connecting portion 53B on the front side WC1 side faces the connecting portion 82 via a gap.

  The operation of the electric razor 1 will be described with reference to FIGS. 17 and 18. 17 and 18 illustrate a cross-sectional structure of the head unit 50 in which the configuration of the blade block 60 and the configuration of the inner surface of the first case 51 related to the blade block 60 are simplified.

  FIG. 17A shows an operating state of the head unit 50 when the blade relative position is the maximum pressing position. FIG. 17B shows the operating state of the roller 25 and the first link 31 corresponding to this operating state.

  FIG. 18A shows an operating state of the head unit 50 when the blade relative position is the maximum pulling position. FIG. 18B shows the operating state of the roller 25 and the first link 31 corresponding to this operating state.

  FIG. 17C and FIG. 18C show the operating state of the head unit 50 when the blade relative position is the neutral position. FIG. 17D and FIG. 18D show the operating state of the roller 25 and the first link 31 corresponding to this operating state.

  Detailed operations of the conversion mechanism 30 and the head unit 50 will be described. In the following, regarding the rotation direction L around the predetermined axis in the plane of the axial direction ZA and the body depth direction ZC, the clockwise rotation direction is referred to as “forward rotation direction L1”, and the counterclockwise rotation direction is referred to as “reversal direction L2”. To do.

(1) “Change from the state of FIG. 17A to the state of FIG. 17C”
When the output shaft 22 of the electric motor 21 rotates from the rotational position shown in FIG. 17B to the rotational position shown in FIG. 17D, each component of the conversion mechanism 30 and the head unit 50 starts from the state shown in FIG. It operates until the state of FIG. The specific operation of each component at this time is shown below.

  The roller 25 rotates together with the output shaft 22. Thereby, it moves to the main body lateral direction ZB with respect to the input portion 31D. For this reason, the input portion 31D receives a force acting in the main body depth direction ZC from the roller 25 and does not receive a force acting in the main body lateral direction ZB from the roller 25.

  For this reason, the state of each component of the conversion mechanism 30 changes from the state of FIG. 17A to the state of FIG. That is, the input portion 31D and the first arm 31A rotate the rotation shaft 31C around the support shaft 34 in the reverse direction L2 in a plan view in the axial direction ZA and the main body depth direction ZC. The second arm 31B rotates in the reverse direction L2 around the support shaft 34 as the rotation shaft 31C rotates in a plan view of the axial direction ZA and the main body depth direction ZC.

  The input end 32A of the second link 32 is attracted to the lower ZA2 by the second arm 31B while rotating with respect to the second arm 31B as the second arm 31B rotates. For this reason, the 2nd link 32 is pulled near to the rotating shaft 31C side by the 2nd arm 31B as a whole. That is, it moves downward ZA2 with respect to the main body case 10A.

  The third link 33 moves to the lower ZA2 with respect to the main body case 10A as the second link 32 moves to the lower ZA2. That is, it moves in the direction away from the head unit 50 in the axial direction ZA.

  The relay member 54 moves to the lower ZA2 with respect to the head case 50A as the third link 33 moves to the lower ZA2. That is, it moves from the head unit 50 side to the apparatus main body 10 side in the axial direction ZA.

  The head link 53 is pulled toward the apparatus main body 10 by the relay member 54 as the relay member 54 moves downward ZA2. At this time, the protrusion 53C of the head link 53 of FIG. 5 moves in the pulling direction WA2 in the longitudinal direction WA by contact with the link guide portion 51B. For this reason, the blade connection portion 53B of the head link 53 also moves in the pulling direction WA2.

  In the dust-proof rubber 16, the central portion 16A moves to the lower ZA2 with respect to the main body case 10A as the third link 33 moves to the lower ZA2. That is, the amount of protrusion of the central portion 16A toward the upper ZA1 side is reduced.

  The movable blade 100 moves in the pulling direction WA2 with respect to the head case 50A and the fixed blade 90 as the blade connecting portion 53B moves in the pulling direction WA2. That is, when the electric motor 21 rotates from the rotational position of FIG. 17 (b) to the rotational position of FIG. 17 (d), the blade relative position changes from the position of FIG. 17 (a) to the position of FIG. 17 (c). .

(2) “Change from the state of FIG. 17C to the state of FIG. 18A”
When the output shaft 22 of the electric motor 21 rotates from the rotational position shown in FIG. 17D to the rotational position shown in FIG. 18B, the components of the conversion mechanism 30 and the head unit 50 start from the state shown in FIG. The operation is performed up to the state of FIG. Each component at this time operates in the same manner as when operating from the state of FIG. 17A to the state of FIG.

  As the dust proof rubber 16 moves to the lower ZA2 of the third link 33, the central portion 16A further moves to the lower ZA2 with respect to the main body case 10A. As a result, the central portion 16A protrudes downward ZA2.

  The movable blade 100 moves in the pulling direction WA2 with respect to the head case 50A and the fixed blade 90 as the blade connecting portion 53B moves in the pulling direction WA2. That is, the blade relative position changes from the position shown in FIG. 17C to the maximum drawing position shown in FIG.

(3) “Change from the state of FIG. 18A to the state of FIG. 18C”
When the output shaft 22 of the electric motor 21 rotates from the rotational position shown in FIG. 18B to the rotational position shown in FIG. 18D, each component of the conversion mechanism 30 and the head unit 50 starts from the state shown in FIG. The operation is performed up to the state of FIG. The specific operation of each component at this time is shown below.

  The roller 25 moves with the output shaft 22 in the body lateral direction ZB with respect to the input portion 31D. For this reason, the state of each component of the conversion mechanism 30 changes from the state of FIG. 18A to the state of FIG. That is, the input portion 31D and the first arm 31A rotate the rotation shaft 31C around the support shaft 34 in the normal rotation direction L1 in a plan view in the axial direction ZA and the main body depth direction ZC. The second arm 31B rotates in the normal rotation direction L1 around the support shaft 34 as the rotation shaft 31C rotates in a plan view of the axial direction ZA and the main body depth direction ZC.

  The input end 32A of the second link 32 is pushed out upward ZA1 by the second arm 31B while rotating with respect to the second arm 31B as the second arm 31B rotates. For this reason, the 2nd link 32 is extruded to the head part 50 side by the 2nd arm 31B as a whole. That is, it moves upward ZA1 with respect to the main body case 10A.

  The third link 33 moves to the upper ZA1 with respect to the main body case 10A as the second link 32 moves to the upper ZA1. That is, it moves in a direction approaching the head unit 50 in the axial direction ZA.

  The relay member 54 moves to the upper ZA1 with respect to the head case 50A as the third link 33 moves to the upper ZA1. That is, it moves from the apparatus main body 10 side to the head unit 50 side in the axial direction ZA.

  The head link 53 is pushed toward the head portion 50 by the relay member 54 as the relay member 54 moves to the upper ZA1. At this time, the protrusion 53C of the head link 53 of FIG. 5 moves in the pressing direction WA1 in the vertical direction WA by contact with the link guide portion 51B. For this reason, the blade connection part 53B of the head link 53 also moves in the pressing direction WA1.

  As the dust proof rubber 16 moves to the upper ZA1 of the third link 33, the central portion 16A moves to the upper ZA1 with respect to the main body case 10A. Thereby, the central portion 16A protrudes toward the upper ZA1 side.

  The movable blade 100 moves in the pressing direction WA1 with respect to the head case 50A and the fixed blade 90 as the blade connecting portion 53B moves in the pressing direction WA1. That is, when the electric motor 21 rotates from the rotation position of FIG. 18B to the rotation position of FIG. 18D, the blade relative position changes from the position of FIG. 18A to the position of FIG. .

(4) “Change from the state of FIG. 18C to the state of FIG. 17A”
When the output shaft 22 of the electric motor 21 rotates from the rotational position shown in FIG. 18D to the rotational position shown in FIG. 17B, the components of the conversion mechanism 30 and the head unit 50 start from the state shown in FIG. It operates to the state of FIG. Each component at this time operates in the same manner as when operating from the state of FIG. 18A to the state of FIG.

  As the dust proof rubber 16 moves to the lower ZA2 of the third link 33, the central portion 16A moves to the upper ZA1 with respect to the main body case 10A. That is, the amount of protrusion of the central portion 16A toward the upper ZA1 side is increased.

  The movable blade 100 moves in the pressing direction WA1 with respect to the head case 50A and the fixed blade 90 as the blade connecting portion 53B moves in the pressing direction WA1. That is, the blade relative position changes from the position shown in FIG. 18C to the maximum pressing position shown in FIG.

  With reference to FIG. 19, a change in the relationship between the spring 61 and the fixed blade holding portion 70 accompanying a change in the blade relative position will be described. FIG. 19 shows a state where the fixed blade 90 and the movable blade 100 are omitted from the blade block 60.

Each spring 61 moves in each spring moving space 78 of the fixed blade holding part 70.
When the blade relative position is the maximum pressing position, the end portion on the front side WC1 side of the spring 61 on the pressing method WA1, that is, the spring fixing portion 83 of the movable blade holding portion 80, is the fixed blade fixing portion 74A on the pressing method WA1 side. It is located on the side of the pressing WA1. At this time, an intermediate portion of the spring 61 on the pressing method WA1 side in front view overlaps with the fixed blade fixing portion 74A on the pressing method WA1 side. Further, the end portion of the front side WC1 of the spring 61 on the pulling side WA2 goes out of the spring moving space 78. At this time, the lower end portion on the back side WC2 side of the foot portion 84 on the pressing method WA1 side of the movable blade holding portion 80 enters the spring moving space 78. Further, the end portion of the support 81 of the movable blade holding portion 80 on the side of the pressing method WA1 approaches the rear side supporting portion 73A on the side of the pressing method WA1. When the blade relative position is the maximum pressing position, a minute gap is formed between the end portion of the support 81 on the pressing method WA1 side and the back supporting portion 73A on the pressing method WA1 side.

  When the blade relative position is the maximum pulling position, the end portion on the front WC1 side of the spring 61 on the pulling WA2 side, that is, the spring fixing portion 83 of the movable blade holding portion 80, is the fixed blade fixing portion 74A on the pulling WA2 side. It is located closer to the pulling direction WA2. At this time, the intermediate portion of the spring 61 on the pulling direction WA2 side in the front view overlaps the fixed blade fixing portion 74A on the pulling WA2 side. Further, the end portion of the front side WC1 of the spring 61 on the side of the pressing method WA1 goes out of the spring moving space 78. At this time, the lower end portion on the back WC2 side of the foot portion 84 on the pulling WA2 side of the movable blade holding portion 80 enters the spring moving space 78. Further, the end portion on the pulling WA2 side of the support body 81 of the movable blade holding portion 80 approaches the back supporting portion 73A on the pulling WA2 side. When the blade relative position is the maximum pulling position, a minute gap is formed between the end of the support 81 on the pulling WA2 side and the back supporting part 73A on the pulling WA2 side.

  The blade block 60 can be cleaned by washing or the like by being taken out from the blade block insertion hole 50X. Moreover, the inside of the blade block insertion hole 50X can also be cleaned. For this reason, when cleaning the blade block 60 and the blade block insertion hole 50X, the blade block 60 is removed.

With reference to FIG. 15, the removal procedure of the blade block 60 by a user is demonstrated.
(X1) Press the release button 55 downward ZA2. At this time, the tip of the release button 55 is detached from the first discharge hole 76 of the blade block 60. For this reason, the blade block 60 can be taken out from the blade block insertion hole 50X.
(X2) Place the belly of the thumb against the flat surface 71C of one protrusion 71B.
(X3) The index finger is placed on the flat surface 71C of the other protrusion 71B.
(X4) The blade block 60 is picked up to the front WC1.

A procedure for attaching the blade block 60 by the user will be described. In the following, the relationship between the end of the head portion 50 on the lower ZA2 side and the end of the blade block 60 having the protruding portion 71B is referred to as “regular direction”.
(Y1) The blade block 60 is arranged in a normal direction.
(Y2) Insert the blade block 60 into the insertion hole 50X. The frame 71 is brought into contact with the edge of the blade block insertion hole 50X. Further, the rib 51L is fitted into the groove 75B.
(Y3) Push the release button 55 upward ZA1. The distal end portion of the release button 55 is fitted into the first discharge hole 76 of the blade block 60. Thereby, the blade block 60 is held in the blade block insertion hole 50X.

With reference to FIG. 20, the assembly procedure of the head unit 50 will be described.
The user attaches the head unit 50 to the apparatus main body 10 according to the following procedure.
As shown in FIG. 20A, the user arranges each component at a position where the insertion part 51 </ b> A of the head unit 50 and the opening part of the apparatus main body 10 face each other. Further, the rotation center axis of the head unit 50 and the rotation center axis of the apparatus main body 10 are matched.

  As shown in FIG. 20B, the user inserts the insertion portion 51 </ b> A of the head unit 50 into the apparatus main body 10. Next, the head unit 50 is rotated in a specified direction with respect to the apparatus main body 10. Thereby, the head unit 50 is fixed to the apparatus main body 10.

  The relationship between the third link 33 and the relay member 54 when the head unit 50 is attached to the apparatus main body 10 will be described with reference to FIGS. 21 to 25 show the relationship between the third link 33 and the head unit 50 in a state where the head unit 50 is attached to the apparatus main body 10. Further, parts other than the third link 33 are omitted from the apparatus main body 10. Further, the second case 52 is omitted from the head unit 50.

  (A) As shown in FIG. 21A, in the relay member 54, when the insertion portion 51A is inserted into the apparatus main body 10, the fixing plate 33A of the third link 33 is inserted into the guide portion 54B. As shown in FIG. 21B, the inner surface of the guide portion 54B faces the side surface of the fixed plate 33A via a gap.

  (B) As shown in FIG. 22B, the head unit 50 rotates from the rotation position of FIG. As shown in FIG. 22A, the relay member 54 is configured such that the third link 33 rotates while rotating with respect to the third link 33 by pressing the fixing plate 33A against the guide portion 54B as the head case 50A rotates. Move downward ZA2.

  (C) As shown in FIG. 23B, the head unit 50 further rotates from the rotation position of FIG. As shown in FIG. 23 (a), the relay member 54 continues to rotate with respect to the third link 33 when the fixing plate 33A is further pressed against the guide portion 54B as the head case 50A rotates. The link 33 moves downward ZA2.

  (D) As shown in FIG. 24B, the head unit 50 further rotates from the rotation position of FIG. As shown in FIG. 24 (a), the relay member 54 continues to rotate with respect to the third link 33 when the guide portion 54B is further pressed against the fixed plate 33A as the head case 50A rotates. The link 33 moves downward ZA2. At this time, the bottom surface of the fixed portion 54C is abutted against the fixed plate 33A as the lower ZA2 moves. As shown in FIG. 24B, a part of the fixed portion 54C overlaps the fixed plate 33A in the axial direction ZA.

  (E) As shown in FIG. 25B, the head unit 50 further rotates from the rotation position of FIG. As shown in FIG. 25A, the relay member 54 continues to rotate with respect to the third link 33 in a state where the bottom surface of the fixing portion 54C is pressed against the fixing plate 33A as the head case 50A rotates. At this time, as shown in FIG. 25 (b), the relay member 54 rotates until both ends of the fixed plate 33A are fitted into the fixed portion 54C. When the rotation position of the relay member 54 with respect to the third link 33 reaches the rotation position shown in FIG. 25B, the assembly work of the head unit 50 to the apparatus main body 10 is completed.

With reference to FIG. 2, the procedure of shaving by the user will be described.
(Z1) The third case 13 is gripped.
(Z2) The electric motor 21 is driven by operating the power switch 18.
(Z3) The shaving surface 90A of the fixed blade 90 is applied to the skin surface.
(Z4) The fixed blade 90 (device main body 10) is reciprocated in the main body lateral direction ZB. As a result, the wrinkle enters the slit 103 of the movable blade 100 from the slit 93 of the fixed blade 90, and the wrinkle is cut and shaved on the contact surface between the fixed blade 90 and the movable blade 100.

With reference to FIG. 26, the operation of the comb 72A in the procedure (Z4) will be described.
As shown in FIG. 26 (a), the shaving surface 90 </ b> A of the fixed blade 90 is applied to the skin surface S and moved toward the eyelid H. At this time, as shown in FIG. 26B, wrinkles H along the skin surface S are raised by the comb 72A and move along the outer periphery of the comb 72A. That is, the bag H is taken into the space between the adjacent combs 72A. Then, as shown in FIG. 26 (c), the ridge H is guided into the slit 93 of the fixed blade 90.

The electric razor 1 of this embodiment has the following effects.
(1) The dust-proof rubber 16 has a central portion 16A that protrudes upward ZA1. According to this configuration, when the dustproof rubber 16 moves to the lower ZA2 side in the direction opposite to the projecting direction of the central portion 16A, the central portion 16A functions as play of the dustproof rubber 16. For this reason, the load of the dust-proof rubber 16 is reduced as compared with the configuration in which the central portion 16A does not protrude upward ZA1. Further, since the dust-proof rubber 16 is in contact with the third link 33, it is possible to prevent the dust and the like from entering the proximal end space RB from between the through hole 16 </ b> P and the third link 33.

  (2) The central portion 16A of the dust-proof rubber 16 is greatly deformed when the third link 33 reciprocates linearly. According to this configuration, since the fluff near the central portion 16A moves with the deformation of the central portion 16A, it is difficult for the fluff to stick to the dust-proof rubber 16. For this reason, fuzz can be easily removed from the distal end side space RC.

  (3) An electric toothbrush is an example of a device having a transmission mechanism that reciprocates linearly and an elastic member attached to the transmission mechanism. The transmission mechanism of the electric toothbrush has a smaller amount of reciprocating linear movement than the third link 33 of the electric razor 1. For this reason, the elastic member of the electric toothbrush has a smaller load caused by the reciprocating linear motion of the transmission mechanism than the dust-proof rubber 16 of the electric razor 1. That is, the dust-proof rubber 16 of the electric razor 1 has a possibility of receiving a large load compared to the elastic member of the electric toothbrush. On the other hand, the dust-proof rubber 16 has a central portion 16A. For this reason, a large load on the dust-proof rubber 16 due to the reciprocating linear motion of the third link 33 is suppressed.

  (4) The third link 33 passes through the central portion 16 </ b> A of the dust-proof rubber 16. According to this configuration, as compared with the configuration in which the third link 33 penetrates the portion protruding to the lower ZA2 side between the central portion 16A and the outer peripheral portion 16B of the dust-proof rubber 16, there is fuzz near the through hole 16P. Etc. are difficult to collect. For this reason, it is difficult for hair dust or the like to enter the proximal end side space RB.

  (5) The dust-proof rubber 16 is positioned on the upper ZA1 side of the upper ZA1 side end of the edge portion 16C than the end on the upper ZA1 side of the portion in contact with the edge portion 16C of the outer peripheral portion 16B. According to this configuration, the dust or the like is unlikely to collect in the groove 12 </ b> A of the second case 12. For this reason, it is difficult for hair dust or the like to enter the proximal end side space RB.

  (6) The dust-proof rubber 16 is made of a rubber material. According to this configuration, the dust-proof rubber 16 can extend along with the reciprocating linear motion. For this reason, resistance to reciprocating linear motion is small.

  (7) The apparatus main body 10 of the electric razor 1 has a dustproof rubber 16. According to this structure, it is suppressed that sawdust etc. penetrate | invade into proximal end side space RB through the clearance gap between the 1st case 11, the 2nd case 12, and the 3rd link 33. FIG.

  (8) The dustproof rubber 16 is attached to the second case 12 of the main body case 10A. According to this configuration, the tip end side space RC can be increased as compared with the configuration in which the dust-proof rubber 16 is attached to the head unit 50. For this reason, since a user can reduce the frequency which removes fuzz etc. from the front end side space RC, usability improves.

  (9) The electric razor 1 has the eccentric shaft 24 and the conversion mechanism 30. According to this configuration, since there is no gear as compared with the case of having a conversion mechanism having a structure including a face gear, there is no gear engagement sound caused by the operation of the conversion mechanism. For this reason, a driving sound becomes smaller than the conversion mechanism of a virtual electric shaver having a structure including a face gear.

(10) The dust-proof rubber 16 is fitted into the groove portion 12 </ b> A formed on the inner surface of the second case 12. According to this configuration, the dust-proof rubber 16 is not easily displaced with respect to the second case 12.
(11) The axial direction ZA of the apparatus body 10 coincides with the longitudinal direction WA of the fixed blade 90 in a plan view of the fixed blade 90. According to this configuration, the dimension of the apparatus main body 10 in the horizontal direction ZB of the apparatus main body 10 is smaller than that of the structure in which the axial direction ZA of the apparatus main body 10 is orthogonal to the vertical direction WA of the fixed blade 90 in plan view. can do. For this reason, the electric razor is made compact. In addition, portability is improved. For this reason, it is possible to provide an unprecedented ease of use, such as carrying the shaving electric razor 1 in a clothing pocket or pen case. Further, by reciprocating the blade block 60 in the lateral direction WB on the skin surface, the fold can be efficiently shaved.

  (12) The back support portion 73A of the fixed blade holding portion 70 contacts the thick portion 91C of the fixed blade 90 and supports the fixed blade 90 from the back WC2 side. On the other hand, the back support portion 73A does not contact the thin portion 91B. According to this configuration, when an impact is applied to the fixed blade 90 from the front WC1, the thin portion 91B is unlikely to contact the fixed blade holding portion. For this reason, a deformation | transformation of the thin part 91B can be suppressed.

  (13) The fixed blade holding portion 70 supports all four thick portions 91C of the support bar portion 91A. According to this configuration, when an impact is applied to the fixed blade 90 from the front WC1, the impact is distributed to the four thick portions 91C. For this reason, a deformation | transformation of the thick part 91C can be suppressed.

  (14) The thin facing portion 73C has a shape recessed in the back side WC2 than the thick facing portion 73B. According to this configuration, when an impact is applied to the fixed blade 90 from the front WC1, the thin portion 91B is less likely to come into contact with the fixed blade holding portion compared to a configuration in which the thin opposing portion 73C is not recessed in the back WC2.

  (15) The fixed blade 90 has two fixed blade side walls 92 extending to the back side WC2. According to this configuration, the fixed blade 90 has higher rigidity than a fixed blade that does not have the fixed blade side wall 92. Further, the support bar portion 91 </ b> A and each blade portion 94 are supported by the fixed blade side wall 92. For this reason, by having the fixed blade side wall 92, the strength required for the fixed blade 90 can be ensured even if the thickness of the support bar portion 91 </ b> A and each blade portion 94 is thinner than the thickness of other portions.

  (16) The fixed blade holding portion 70 has a lower end facing portion 74D at a portion corresponding to the lower end of the foot portion 95 of the fixed blade side wall 92. According to this configuration, when an impact is applied to the fixed blade 90 from the side of the front WC1, there is a possibility that the impact is transmitted to the lower end facing portion 74D due to the contact between the foot portion 95 and the lower end facing portion 74D. . For this reason, a deformation | transformation of the thick part 91C can be suppressed.

  (17) In the fixed blade 90, the blade portion 94 and the slit 93 of the shaved surface 90 </ b> A are continuously formed from one end portion to the other end portion in the lateral direction WB of the fixed blade 90. According to this structure, the edge part of the blade part 94 and the slit 93 are not caught on skin compared with the structure where the blade part 94 and the slit 93 are discontinuous in the horizontal direction WB. For this reason, skin-friendly shaving can be realized.

  (18) The shaving surface 90 </ b> A of the fixed blade 90 is formed as an inclined surface that approaches the extension line of the center line C <b> 1 of the device main body 10 toward the tip of the shaving surface 90 </ b> A. For this reason, it is easy to apply the shaving surface 90 </ b> A to the skin surface while the third case 13 is gripped.

(19) In the apparatus main body 10, the diameter of the head unit 50 is smaller than the diameters of the second case 12 and the third case 13. According to this structure, it is easy to apply the head part 50 to the desired position on the skin surface.
(20) The movable blade 100 reciprocates inside the U-shaped fixed blade 90. According to this structure, the irritation | stimulation to the skin surface is reduced. In addition, the heel can be shaved sufficiently short.

  (21) The shaving surface 90A is formed as a flat surface. According to this structure, the area which contacts skin can be enlarged. Thereby, shaving efficiency can be improved. Moreover, it is easy to apply the shaved surface 90A to the skin.

  (22) The frame body 71 of the blade block 60 and the top 91 of the fixed blade 90 protrude from the blade block insertion hole 50X when the blade block 60 is fitted in the blade block insertion hole 50X of the head unit 50. According to this configuration, since the top portion 91 of the fixed blade 90 protrudes from the head portion 50, the shaved surface 90A can be easily applied to the skin.

  (23) Generally, the slit blade is small in strength because the slit is formed over the entire lateral direction WB at the top. For this reason, when it has a slit blade as a fixed blade, it is preferred to enlarge the intensity of a fixed blade.

  The electric razor 1 has a slit blade as the fixed blade 90. The fixed blade 90 has an intermediate slit width SA smaller than the intermediate blade width BA. According to this configuration, the strength of the fixed blade 90 is higher than that in the configuration in which the intermediate slit width SA is larger than the intermediate blade width BA. For this reason, the slit blade as the fixed blade 90 is not easily deformed.

(24) The intermediate blade width BA of the blade intermediate portion 94A of the fixed blade 90 has a linear shape. According to this configuration, the strength of the fixed blade 90 is higher than the configuration in which the blade intermediate portion 94A is curved.
(25) The end slit width SD of the electric razor 1 is larger than the intermediate slit width SA. According to this configuration, since the slit width of the slit end portion 93 </ b> B that is a portion for introducing the hair into the fixed blade 90 is large, the hair can be efficiently guided into the fixed blade 90. For this reason, a heel can be shaved efficiently.

  (26) The end slit width SD of the electric razor 1 is larger than the end blade width BD. According to this configuration, the hair can be efficiently guided into the fixed blade 90 as compared with the configuration in which the end slit width SD is smaller than the end blade width BD.

  (27) As for the movable blade 100 of the electric razor 1, the whole top part 101 is arrange | positioned corresponding to the blade intermediate part 94A. According to this configuration, since the blade intermediate portion 94A is supported by the movable blade 100, the fixed blade 90 is not easily deformed.

  (28) The thickness of the blade middle portion 94A is smaller than the thickness of the blade end portion 94B. According to this configuration, the movable blade 100 is positioned closer to the hair root in the blade intermediate portion 94A. For this reason, hair can be deeply cut.

  (29) All the blade portions 94 of the electric razor 1 overlap with the blade portion 104 of the movable blade 100 in the neutral position. According to this configuration, since the blade portions 94 of all the fixed blades 90 are supported by the movable blade 100, the fixed blades 90 are not easily deformed.

  (30) The blade portion 94 of the electric razor 1 has an inclined portion 94C and a straight portion 94D. The blade width of the inclined portion 94C gradually decreases toward the outside in the lateral direction WB. The blade width of the straight line portion 94D has a certain size in the lateral direction WB. According to this structure, compared with the structure where the blade width of the blade part 94 becomes small in steps, the blade part 94 is not easily caught on the skin.

  (31) The electric razor 1 has a protruding portion 71B that applies a finger to a portion adjacent to the fixed blade 90 in the lateral direction WB. According to this configuration, when the blade block 60 is removed from the main body by applying a finger to the protrusion 71B, the finger 71 may contact the fixed blade 90 because the protrusion 71B is not on the extension of the vertical direction WA of the fixed blade 90. Can be reduced by the user. That is, the user can safely remove the blade block 60 from the main body.

  (32) The electric razor 1 has a flat surface portion 71C at the end of the protruding portion 71B opposite to the fixed blade 90. According to this configuration, the user can easily pinch the protruding portion 71B stably.

  (33) The electric razor 1 has a recess in the portion of the main body corresponding to the protrusion 71B. According to this structure, the protrusion amount of the protrusion part 71B becomes relatively large. That is, it becomes easy for the user to place a finger on the protruding portion 71B. Moreover, compared with the case where the protrusion amount of the protrusion part 71B is enlarged, it can suppress that the protrusion part 71B obstructs when it shaves by contacting skin.

  (34) The electric razor 1 has two projecting portions 71B facing each other with the fixed blade 90 interposed therebetween. According to this configuration, the user can easily remove the blade block 60 by gripping each protrusion 71B.

  (35) The protruding portion 71B is formed in a portion adjacent to the end portion of the fixed blade 90 on the third case 13 side. According to this configuration, as compared with the case where the protruding portion 71B is formed in a portion adjacent to the end portion on the side of the pressing method WA1, it is prevented that the protruding portion 71B interferes with shaving hair by hitting the skin. can do.

  (36) The electric razor 1 has a rib 51L and a groove 75B as a restricting structure capable of attaching the blade block 60 to the head unit 50 only in a normal direction. According to this configuration, when the blade block 60 is assembled to the head unit 50, the protruding portion 71B is not disposed at the end portion on the side of the pressing method WA1. For this reason, it can suppress that it becomes an obstacle when shaving hair by projecting part 71B hitting skin. Moreover, since the rib 51L and the groove 75B are provided as the restricting structure, the blade block 60 is unlikely to come off the head portion 50. Moreover, it is easy to confirm whether the blade block 60 is firmly attached to the head unit 50.

  (37) The fixed blade 90 is fitted into the frame 71 of the fixed blade holding portion 70 on the entire circumference in plan view. According to this configuration, since the entire circumference of the fixed blade 90 is held by the fixed blade holding portion 70, the strength of the blade block 60 can be improved. Moreover, since the exposed surface of the fixed blade 90 of the blade block 60 removed from the main body 10 is reduced, the user can handle the blade block 60 with peace of mind.

  (38) The hair that has been introduced and cut into the fixed blade 90 and the fixed blade holding portion 70 is moved toward the end of the fixed blade holding portion 70 in the longitudinal direction WA along with the reciprocating linear motion. The electric razor 1 has a first discharge hole 76 that passes through the fixed blade holding portion 70 in the vertical direction WA in each wall portion 74 of the fixed blade holding portion 70. According to this structure, since the hair brought close to both ends in the longitudinal direction WA of the fixed blade holding portion 70 can be efficiently discharged to the outside of the fixed blade holding portion 70 through the communication hole, the hair discharging efficiency is improved.

  (39) The fixed blade side wall 92 faces the movable blade side wall 102 via a gap. According to this configuration, the hair introduced into the fixed blade 90 can be moved to the gap between the fixed blade side wall 92 and the movable blade side wall 102. For this reason, it can suppress that the hair collected between the fixed blade 90 and the movable blade 100 prevents reciprocating linear motion.

  (40) The movable blade holding portion 80 has a movement restricting portion 87 facing the fixed blade side wall 92 with a minute gap. According to this configuration, the amount of movement of the movable blade 100 in the lateral direction WB relative to the fixed blade side wall 92 is limited to the size of the gap between the movement restricting portion 87 and the fixed blade side wall 92. That is, the movable blade 100 can be prevented from moving in the lateral direction WB with respect to the fixed blade 90. Thereby, it is suppressed that the movable blade 100 contacts the blade end portion 94B and the thick portion 91C, and that the movable blade 100 enters the side WC2 of the blade end portion 94B and the thick portion 91C. Moreover, the area of the part which opposes the fixed blade side wall 92 of the movement control part 87 is small. For this reason, it is possible to reduce the contact resistance when the movable blade 100 moves in the longitudinal direction WA with respect to the fixed blade 90 in a state where the movable blade 100 is in contact with the movement restricting portion 87.

  (41) Each wall portion 74 comes into contact with the fixed blade 90 to fix the fixed blade 90, two fixed blade fixing portions 74A, and a spring moving space 78 into which the spring 61 enters as the movable blade 100 reciprocates linearly. Have The spring moving space 78 of the wall portion 74 on the side of the pressing method WA1 has such a size that the spring 61 on the pressing method WA1 side can enter the portion on the pressing method WA1 side of the fixed blade fixing portion 74A in the vertical direction WA. Have. The spring moving space 78 of the wall portion 74 on the pulling WA2 side has such a size that the spring 61 on the pulling WA2 side can enter the portion on the pulling WA2 side of the fixed blade fixing portion 74A in the vertical direction WA. Have. According to this configuration, the size of the fixed blade holding unit 70 in the vertical direction WA can be reduced.

  (42) The lower end portion of the foot portion 84 of the movable blade holding portion is formed on the front side WC1 side of the spring fixing portion 75A of the fixed blade holding portion 70. According to this configuration, the movable blade holding portion 80 can be positioned inside the spring moving space 78. Thereby, the magnitude | size of the depth direction WC of the blade block 60 can be made small.

(43) The fixed blade fixing portion 74A is melted in a state where the fixed blade 90 is attached. According to this configuration, the fixed blade fixing portion 74A and the fixed blade 90 can be firmly attached.
(44) The movable blade fixing portion 85 is melted in a state where the movable blade 100 is attached. According to this configuration, the movable blade holding unit 80 and the movable blade 100 can be firmly attached.

  (45) The fixed blade holding portion 70 has hooks 74B that are hooked on the hook hooking portions 97 of the fixed blade 90 at portions adjacent to the fixed blade fixing portions 74A. According to this configuration, the connection between the fixed blade 90 and the fixed blade holding unit 70 is strengthened. Further, since each hook 74B is formed in a portion adjacent to the fixed blade fixing portion 74A, the space for forming the hook 74B is larger than when the hook 74B is formed in a portion away from the fixed blade fixing portion 74A. Can be small. Thereby, the magnitude | size of the fixed blade holding | maintenance part 70 and the fixed blade 90 can be made small. Moreover, in the assembly procedure (B4) of the blade block 60, it can suppress that the fixed blade holding | maintenance part 70 and the fixed blade 90 slip | deviate.

  (46) The movable blade holding portion 80 has a hook 86 at a portion adjacent to the movable blade fixing portion 85. The movable blade 100 has a hook hooking portion 107 that hooks on the hook 86 at a portion corresponding to the hook 86. According to this configuration, the movable blade 100 and the movable blade holding portion 80 are strongly fixed. Further, since the hook 86 is formed in a portion adjacent to the movable blade fixing portion 85, the space for forming the hook 86 is smaller than the case where the hook 86 is formed in a portion away from the movable blade fixing portion 85. can do. Thereby, the magnitude | size of the movable blade holding | maintenance part 80 and the movable blade 100 can be made small. Moreover, in the assembly procedure (B1) of the blade block 60, it can suppress that the movable blade holding | maintenance part 80 and the movable blade 100 slip | deviate.

  (47) The virtual blade block not having the comb 72A moves the fixed blade 90 in the direction of the arrow by applying the fixed blade 90 to the skin surface S toward the ridge H along the skin surface S, as shown in FIG. At this time, as shown in FIG. In this case, as shown in FIG. 27 (c), there is a possibility that the heel H may sink between the flat surface of the fixed blade 90 and the skin surface S. The electric razor 1 has a plurality of combs 72A along the vertical direction WA at both ends of the fixed blade 90 in the horizontal direction WB. According to this configuration, each comb 72 </ b> A guides wrinkles H along the skin surface S to each slit 93, so that hair can be efficiently guided to the slit 93. In addition, the heel H along the skin surface S can be easily shaved.

  (48) The smaller the diameter of the curved surface portion 72B, the longer the portion along the depth direction WC on the back WC2 side. For this reason, the heel H along the skin surface S is likely to come into contact with a portion along the depth direction WC on the back WC2 side as the diameter of the curved surface portion 72B is smaller. The wrinkles H along the skin surface S are more likely to be raised when contacting the portion along the depth direction WC than when contacting the arc portion 92A. The diameter of the curved surface portion 72B of the comb 72A is sufficiently smaller than the diameter of the arc portion 92A of the fixed blade 90. According to this configuration, the comb 72A is likely to cause wrinkles H along the skin surface S.

  (49) The guiding portion 72 has combs 72A at both ends in the lateral direction WB in all of the plurality of blade portions 94. According to this configuration, the electric razor 1 can efficiently guide hair to all the slits 93. That is, the efficiency of causing wrinkles is higher than in the case where combs 72A are provided at both ends of the blade portion 94 in the lateral direction WB.

  (50) The front end portion 72C of the comb 72A is positioned on the back WC2 side with respect to the back WC2 side surface of the blade intermediate portion 94A. According to this configuration, since the protruding amount of the comb 72A is small, the amount that the distal end portion 72C bites into the skin can be reduced. Thereby, the uncomfortable feeling which a user feels by the contact of the comb 72A can be reduced.

  (51) The amount of protrusion from the fixed blade 90 of the frame body 71 as the base end portion of the guide portion 72 increases toward the back side WC2 in the depth direction WC. According to this configuration, when the fixed blade 90 is moved in the lateral direction WB with respect to the skin, since the skin contacts the comb 72A and the fixed blade 90 after contacting the frame 71, it is possible to reduce a sense of discomfort felt by the user.

(52) The guiding portion 72 is formed as a part of the frame 71. According to this configuration, the strength of the fixed blade holding part 70 can be improved as compared with the case where the guide part 72 and the frame 71 are separated.
(53) The fixed blade 90 and the fixed blade holding portion 70 have a first positioning portion 98 and a second positioning portion 74C that define the mutual positional relationship. The second positioning portion 74 </ b> C is located at the center of the vertical direction WA among the fixed blade holding portion 70 and the guide portion 72. According to this configuration, the guide portion 72 is positioned with respect to the fixed blade 90 in the center of the guide portion 72 in the longitudinal direction WA. Thereby, compared with the case where it positions with respect to the fixed blade 90 in the edge part of the vertical direction WA of the guide part 72, the comb 72A of the guide part 72 and the blade part 94 of the fixed blade 90 are hard to shift | deviate.

  (54) According to the configuration in which the blade connecting portion 53B of the head link 53 is connected to the end portion of the pulling method WA2 in the longitudinal direction WA of the movable blade 100, the movable blade 100 is easily biased to the pulling method WA2. Exercise and sharpness become unstable. Further, according to the configuration in which the blade connecting portion 53B of the head link 53 is connected to the end portion of the pressing method WA1 in the longitudinal direction WA of the movable blade 100, the movable blade 100 is easily pressed against the fixed blade 90 excessively. The reciprocating linear motion becomes unstable. The electric razor 1 connects the blade connecting portion 53B of the head link 53 and the central connecting portion 82 in the longitudinal direction WA of the movable blade 100. According to this structure, the drive of the movable blade 100 is stabilized compared with the structure which connects the edge part in the longitudinal direction WA of the blade connection part 53B and the movable blade 100. FIG. Moreover, since the movable blade 100 can be suppressed from being biased to the pulling direction WA2, the sharpness is stabilized. Thereby, the reciprocating linear motion of the movable blade 100 can be stabilized.

  (55) The end surface of the blade connecting portion 53B on the front WC1 side faces the connecting portion 82 with a gap therebetween. According to this configuration, the blade connecting portion 53B is suppressed from excessively pressing the movable blade 100 toward the front WC1 side.

  (56) The electric razor 1 includes a first transmission portion including a first portion 53X having a shape extending in the axial direction ZA, and a second portion 53Y as a second transmission portion having a shape extending in the depth direction WC. The relay member 54 that is the input end of the first transmission unit is connected to the electric motor 21 via the conversion mechanism 30. Further, the blade connecting portion 53B which is the output side end portion of the second portion 53Y is connected to the connecting portion 82. According to this structure, since the 2nd transmission part connects with the connection part 82 from the depth direction WC orthogonal to the vertical direction WA, ie, a connection direction, and a substantially orthogonal direction, connection of the blade connection part 53B and the connection part 82 is carried out. Is hard to come off.

  (57) The spring 61 has each spring 61 at a position facing the second portion 53Y. According to this configuration, the pressing force of the movable blade 100 by each spring 61 is stabilized even when the blade relative position is at the maximum pressing position and the maximum pulling position.

(58) The connecting portion 82 is located on the center line C1 of the apparatus main body 10. According to this structure, the magnitude | size of the main body horizontal direction ZB of the electric shaver 1 can be made small.
(59) The connecting portion 82 is located on the rotation center line C <b> 2 of the electric motor 21. According to this configuration, since the distance between the electric motor 21 and the movable blade 100 can be reduced, driving efficiency can be improved.

  (60) The blade block 60 can be removed from the head unit 50. According to this configuration, the blade block 60 and the head unit 50 can be cleaned with the blade block 60 removed from the head unit 50. For this reason, the fixed blade 90, the movable blade 100, and the head unit 50 can be easily cleaned.

  (61) The virtual electric shaver 500 shown in FIG. 31 has a configuration in which a thin plate-like movable blade 540 and a fixed blade (not shown) are exposed from the blade case 550. For this reason, the movable blade 540 can appropriately cut the hair even if the movement width of the reciprocating linear motion is small.

  On the other hand, an electric razor having a structure having an outer blade as a fixed blade and an inner blade as a movable blade (hereinafter referred to as “built-in razor”) is known in order to soften the skin per user.

  One form of the built-in razor has a fixed blade in which a large number of introduction holes are formed in a thin plate-shaped metal piece. Since this built-in type razor cuts the hair introduced into the introduction hole short, it is necessary to make the fixed blade thin. However, when the fixed blade is thinned, the rigidity required for the fixed blade may not be maintained.

  Therefore, a measure to increase the thickness of the metal piece can be considered to ensure the rigidity of the fixed blade. However, when this measure is adopted, another problem arises that the amount of body hair introduced into the introduction hole is reduced when shaving the body hair. As a method for solving this problem, there is a method in which a plurality of slits are formed in a metal piece instead of a plurality of introduction holes.

  The fixed blade having a plurality of slits solves the above problem, but the width of the slit in the short direction is larger than the diameter of the introduction hole, so that the moving width of the reciprocating linear motion of the movable blade relative to the fixed blade is increased. Is required.

  In order to meet this requirement, it is conceivable to use the conversion mechanism 530 of the virtual electric razor 500 having the face gear 531 as the conversion mechanism of the built-in razor having the slit. On the other hand, the conversion mechanism 530 needs to increase the diameter of the face gear 531 in order to increase the movement width of the reciprocating linear motion of the eccentric cam 532. For this reason, in the built-in razor using the conversion mechanism 530, when the movement width of the reciprocating linear motion of the movable blade is increased, the main body becomes thicker as the face gear 531 increases in size.

  The electric razor 1 of the present embodiment has a mechanism constituted by a link mechanism as the conversion mechanism 30 that converts the rotational motion of the electric motor 21 into the reciprocating linear motion of the movable blade 100. According to this configuration, as compared with the conversion mechanism 530 having the face gear 531, the reciprocating linear movement required for the movable blade 100 can be secured even if the size of the conversion mechanism 30 in the lateral direction ZB of the main body is reduced. It becomes possible. For this reason, the apparatus main body 10 can be made thin. That is, the conversion mechanism 30 contributes to increasing the movement width of the reciprocating linear motion of the movable blade 100 and narrowing the case.

  (62) The second arm 31B extends in a direction different from the first arm 31A with the rotation shaft 31C as a fulcrum. According to this configuration, compared with a configuration in which the first arm 31A and the second arm 31B extend in the same direction with the rotation shaft 31C as a fulcrum, that is, the configuration in which the first link 31 is formed linearly, In the axial direction ZA, the swinging width of the second arm 31B increases as the first arm 31A swings. For this reason, the movement width | variety of the reciprocating linear motion of the movable blade 100 becomes large.

  (63) The center line of the eccentric shaft 24 is parallel to the operation surface 18C of the power switch 18. According to this configuration, the axial length of the eccentric shaft 24 is not restricted by the relationship with the operation surface 18C. For this reason, the freedom degree about the shape of the eccentric shaft 24 becomes high.

  (64) The second distance D2 of the first link 31 is smaller than the first distance D1. According to this configuration, the force for moving the second link 32 by the reciprocating linear motion of the first link 31 is increased as compared with the configuration in which the second distance D2 is equal to or greater than the first distance D1. For this reason, the force which moves the movable blade 100 becomes large.

  (65) The head unit 50 has a release button 55. According to this configuration, when the head unit 50 is attached to the blade block 60 and the release button 55 is pushed up to the upper side ZA1, the blade block 60 is unlikely to be detached from the head unit 50.

  (66) The electric razor 1 has a current fuse 46 that cuts off the supply of power from the secondary battery 17 to the electric motor 21. According to this configuration, when the electric motor 21 is short-circuited, the current supply from the secondary battery 17 to the electric motor 21 is interrupted by the operation of the current fuse 46. For this reason, it is suppressed that an overcurrent flows into the electric motor 21.

  The present invention includes an embodiment different from the above embodiment. Hereinafter, the modification of the said embodiment as another embodiment of this invention is shown. The following modifications can be combined with each other.

-The dust-proof rubber 16 of embodiment has the center part 16A which protrudes in upper direction ZA1. On the other hand, the dustproof rubber 16 of the modified example has a flat central portion 16A.
-The dust-proof rubber 16 of embodiment has the center part 16A which protrudes in upper direction ZA1. On the other hand, the dust-proof rubber 16 of the modified example has a central portion 16A that protrudes downward ZA2. In this case, the central portion 16A corresponds to a “proximal end side convex portion”.

-The dustproof rubber 16 of embodiment has the through-hole 16P inside 16 A of center parts. On the other hand, the dustproof rubber 16 of the modified example has a through hole 16P in the outer peripheral portion 16B.
The dustproof rubber 16 of the embodiment is attached to the second case 12. On the other hand, the modified dust-proof rubber 16 is attached to the head case 50A.

-The dust-proof rubber 16 of embodiment is attached to the 3rd link 33 which comprises a transmission part. On the other hand, the dustproof rubber 16 of the modified example is attached to the rotating member 23 that constitutes the conversion unit.
-The apparatus main body 10 of embodiment has the dust-proof rubber 16 formed with a rubber material as a division member. On the other hand, the apparatus main body 10 of a modified example has a partition member formed of a flexible resin material or a fiber material. In this case, a part of the partition member protrudes toward the upper ZA1 or the lower ZA2 side by bending.

  The dustproof rubber 16 of the embodiment contacts the entire circumference of the inner surface of the second case 12. On the other hand, the dustproof rubber 16 of the modified example contacts a part of the inner surface of the third link 33. Also in this case, the portion where the dust-proof rubber 16 is disposed can make it difficult for the hair dust or the like to enter the proximal end side space RB.

  -The 2nd case 12 of embodiment has the groove part 12A for inserting the dust-proof rubber 16. FIG. On the other hand, in the second case 12 of the modified example, the groove portion 12A is omitted. In this case, the dust-proof rubber 16 is prevented from being displaced from the inner surface of the second case 12 due to friction between the edge portion 16 </ b> C and the inner surface of the second case 12.

  In the back support portion 73A of the embodiment, the thin facing portion 73C is recessed toward the back WC2 side than the thick facing portion 73B. On the other hand, in the back support portion 73A of the modified example, the thin facing portion 73C and the thick facing portion 73B form a flat surface.

-The back support part 73A of embodiment has the thin part 73C. On the other hand, the back support portion 73A of the modified example omits the thin facing portion 73C.
In the back support portion 73A of the embodiment, the thin facing portion 73C is recessed toward the back WC2 side than the thick facing portion 73B. On the other hand, in the back support portion 73A of the modified example, the thin facing portion 73C protrudes to the front WC1 side than the thick facing portion 73B. In this case, the thin facing portion 73C is in contact with the thin portion 91B.

-Each back support part 73A of embodiment has two thick opposing parts 73B. On the other hand, the back support portion 73A of the modified example omits one of the two thick opposing portions 73B.
-Fixed blade holding | maintenance part 70 of embodiment has back side support part 73A in the both ends of the vertical direction WA. On the other hand, in the fixed blade holding part 70 of the modified example, one side of the back support part 73A is omitted.

  In the fixed blade 90 of the embodiment, the thin portion 91B is formed between the thick portions 91C at both ends in the lateral direction WB. On the other hand, in the fixed blade 90 of the modified example, thin portions 91B are formed at both ends in the lateral direction WB, and thick portions 91C are formed between the thin portions 91B. In this case, the back support portion 73A has thin opposing portions 73C formed at both ends in the lateral direction WB, and a thick opposing portion 73B is formed between the thin opposing portions 73C at both ends.

  -The conversion part of embodiment is comprised by the link mechanism which has the eccentric shaft 24, the 1st link 31, and the 2nd link 32. As shown in FIG. On the other hand, the conversion part of a modification is comprised by the gear mechanism which has a face gear.

  In the fixed blade 90 according to the embodiment, the end slit width SD is larger than the intermediate slit width SA. Further, the end blade width BD is smaller than the intermediate blade width BA. On the other hand, as shown in FIG. 28, the fixed blade 90 of the modified example has a shape in which the slit width and the blade width are constant.

  -The fixed blade 90 of embodiment has the fixing | fixed part 96 by which the back WC2 side is open | released. On the other hand, as shown in FIG. 28, the fixed blade 90 of the modified example has a circular fixing portion 96 having no open portion. In this case, as shown in FIG. 28, the fixed blade holding portion 70 has a fixed blade fixing portion 74 </ b> A corresponding to the shape of the fixing portion 96.

  -The movable blade 100 of embodiment has the fixing | fixed part 106 by which the back WC2 side is open | released. On the other hand, as shown in FIG. 28, the movable blade 100 according to the modification has a fixed portion 106 that does not have an open portion. In this case, as shown in FIG. 28, the movable blade holding portion 80 has a movable blade fixing portion 85 corresponding to the shape of the fixing portion 106.

  -As for the movable blade 100 of embodiment, the slit 103 inclines with respect to the horizontal direction WB. On the other hand, as shown in FIG. 28, in the movable blade 100 of the modification, the slit 103 is parallel to the lateral direction WB.

  -The fixed blade holding | maintenance part 70 of embodiment has the frame 71 corresponding to the perimeter of the fixed blade 90. FIG. On the other hand, as shown in FIG. 28, the modified fixed blade holding unit 70 omits the portions corresponding to both ends of the frame 71 in the lateral direction WB.

-Fixed blade fixing | fixed part 74A of embodiment is fuse | melted in the state to which the fixed blade 90 was attached. On the other hand, the fixed blade fixing portion 74A of the modified example is not melted.
-The movable blade fixing | fixed part 85 of embodiment is fuse | melted in the state to which the movable blade 100 was attached. On the other hand, the movable blade fixing portion 85 of the modification is not melted.

  -Shaving surface 90A of embodiment is parallel to the horizontal direction WB. On the other hand, as shown in FIG. 29, the shaving surface 90A of the modified example has a chamfered shape in which the surface on the front side WC1 side of the inclined portion 94C is inclined with respect to the lateral direction WB. Further, as shown in FIG. 30, the entire shaved surface 90A of the fixed blade 90 can be a gently curved surface.

  In the modification shown in FIGS. 29 and 30, the biting into the skin surface of the edge of the slit 93 on the shaved surface 90 </ b> A can be eased. For this reason, a wrinkle can be shaved smoothly, reducing the irritation | stimulation to a skin surface. In addition, when pressing on the skin is considered, the contact area with the skin does not decrease. Moreover, the area of the shaving surface 90A of the fixed blade 90 increases. For this reason, shaving efficiency improves.

-The fixed blade 90 of embodiment has the slit 93 extended along the horizontal direction WB. On the other hand, the modified fixed blade 90 has a slit extending inclining with respect to the lateral direction WB.
The fixed blade 90 of the embodiment has a flat shaved surface 90A. On the other hand, the modified fixed blade 90 has a curved shaved surface 90A. In addition, it is preferable to enlarge the contact area to skin also in 90 A of curved shaved surfaces.

In the fixed blade 90 of the embodiment, the fixed blade side wall 92 is connected perpendicularly to the top 91. On the other hand, the fixed blade 90 of the modified example is connected to the top portion 91 with the fixed blade side wall 92 inclined.
The fixed blade 90 of the embodiment has a straight fixed blade side wall 92 and a top 91. On the other hand, the modified fixed blade 90 is formed of a curved fixed blade side wall and a top portion. The fixed blade 90 of a further modification has a plurality of bent surfaces. In any case, the fixed blade 90 can be appropriately changed within a range in which a necessary strength can be secured.

  The fixed blade 90 of the embodiment has a U shape formed by the top portion 91 and the two fixed blade side walls 92. On the other hand, the fixed blade 90 of the modified example omits one fixed blade side wall 92. Further, in the fixed blade 90 of a further modification, both the fixed blade side walls 92 are omitted. In any case, if both ends of each crosspiece are supported by the fixed blade holding portion 70, the strength necessary for the fixed blade can be secured.

-As for the fixed blade 90 of embodiment, the whole blade intermediate part 94A has a linear shape. On the other hand, in the modified fixed blade 90, a part of the blade intermediate portion 94A has a linear shape.
In the fixed blade 90 according to the embodiment, the thickness of the blade intermediate portion 94A is smaller than the thickness of the blade end portion 94B. On the other hand, in the modified fixed blade 90, the thickness of the blade intermediate portion 94A is greater than or equal to the thickness of the blade end portion 94B.

  In the embodiment, the fixed blade 90 has the end blade width BD smaller than the end slit width SD. On the other hand, in the fixed blade 90 of the modification, the end blade width BD is larger than the end slit width SD, or the end blade width BD and the end slit width SD are equal.

-The blade edge part 94B of embodiment has the inclination part 94C and the linear part 94D. On the other hand, in the modified blade edge portion 94B, one of the inclined portion 94C and the straight portion 94D is omitted.
-The blade edge part 94B of embodiment has the inclination part 94C which inclines linearly. On the other hand, the blade edge portion 94B of the modified example has a curved inclined portion.

-Blade block 60 of an embodiment has spring 61 as a coil spring. On the other hand, the blade block 60 of the modification has a spring as a leaf spring.
-The blade block 60 of embodiment has the groove | channel 75B as a control structure, and the head part 50 has the rib 51L as a control structure. On the other hand, the blade block 60 of the modified example has a rib as a restricting structure, and the head unit 50 has a groove as a restricting structure.

  -The blade block 60 and the head part 50 of embodiment have the groove | channel 75B and the rib 51L as a control structure for attaching the blade block 60 in a regular direction. On the other hand, the modified blade block 60 and the head unit 50 omit the restriction structure. In this case, the blade block 60 can be attached to the head unit 50 in a state rotated by 180 degrees with respect to the normal direction.

The frame body 71 of the embodiment covers the entire circumference of the fixed blade 90 in the plan view of the blade block 60. On the other hand, the frame of the modification covers only a part of the fixed blade 90 in a plan view of the blade block 60.
-The fixed blade holding | maintenance part 70 of embodiment is integrally formed as a molded article. On the other hand, in the fixed blade holding part 70 of the modified example, the frame body and the fixed portion are formed separately.

  In the movable blade 100 of the embodiment, the entire top portion 101 overlaps the blade middle portion 94 </ b> A of the fixed blade 90. On the other hand, in the movable blade 100 of the modified example, a part of the top part 101 overlaps the blade intermediate part 94A of the fixed blade 90, and a part overlaps the blade end part 94B.

  In the movable blade 100 of the embodiment, at least a part of the blade portion 104 of the movable blade 100 overlaps all the blade portions 94 of the fixed blade 90 when the blade relative position is the neutral position. On the other hand, in the movable blade 100 of the modification, at least a part of the blade part of the movable blade 100 overlaps with a part of the blade part 94 of the fixed blade 90 when the blade relative position is the neutral position.

  -The fixed blade holding | maintenance part 70 of embodiment has the hook 74B in the part adjacent to the four fixed blade fixing | fixed parts 74A. On the other hand, in the fixed blade holding part 70 of the modified example, at least one of the four hooks 74B is omitted.

-Fixed blade holding | maintenance part 70 of embodiment has the guidance | induction part 72. FIG. On the other hand, in the fixed blade holding part 70 of the modified example, the guide part 72 is omitted.
In the embodiment, the guide portion 72 is formed integrally with the fixed blade holding portion 70. On the other hand, the guide part of the modification is formed separately from the fixed blade holding part 70.

  In the embodiment, the comb 72 </ b> A of the guide portion 72 corresponds to all the blade portions 94 of the fixed blade 90. On the other hand, the guide part of the modification corresponds to a part of the plurality of blade parts 94. For example, the slits 93 are thinned out every 5 pitches. In this modification, the skin irritation can be relatively reduced.

  In the guide portion 72 of the embodiment, the distal end portion 72C is positioned on the back side WC2 side with respect to the surface on the back side WC2 side of the blade intermediate portion 94A. On the other hand, in the guide part 72 of the modified example, the distal end part 72C is positioned on the back WC2 side with respect to the back WC2 side surface of the blade intermediate part 94A. In addition, the irritation | stimulation to skin can be made small, so that the front-end | tip part 72C is located in the back WC2 side. Moreover, the efficiency which raise | generates wrinkles H can be improved, so that 72 C of front-end | tip parts are located in the front WC1 side.

  In the guide portion 72 of the embodiment, the diameter of the curved surface portion 72B of the comb 72A is smaller than the diameter of the arc portion 92A. On the other hand, in the guide part 72 of the modified example, the diameter of the curved surface part 72B of the comb 72A is larger than the diameter of the arc part 92A. In addition, it raises and raises efficiency, so that the diameter of the curved-surface part 72B of the comb 72A is made small. Moreover, the irritation | stimulation to skin can be made small, so that the diameter of the curved-surface part 72B of the comb 72A is enlarged.

  -The guidance | induction part 72 of embodiment is formed as a surface where the surface of the front-end | tip part 72C at the surface WC1 side is parallel to the horizontal direction WB. On the other hand, the guide part 72 of the modified example is inclined lower as the surface of the front end part 72C on the front WC1 side is separated from the fixed blade 90. Moreover, this end surface can also be made into a curved surface or a circular arc surface. In this case, the contact with the skin becomes smoother.

  -The fixed blade holding | maintenance part 70 of embodiment has the 2nd positioning part 74C in the center of the vertical direction WA of the fixed blade holding | maintenance part 70. FIG. On the other hand, the modified fixed blade holding unit 70 has a positioning unit at the end of the fixed blade holding unit 70 in the longitudinal direction WA. In this case, the first positioning part 98 of the fixed blade 90 is changed to a position corresponding to the positioning part of the fixed blade holding part 70.

  -The fixed blade holding | maintenance part 70 of embodiment has the 2nd positioning part 74C in the center of the vertical direction WA of the fixed blade holding | maintenance part 70. FIG. On the other hand, the fixed blade holding part 70 of the modified example is positioned between the end of the fixed blade holding part 70 on the pressing direction WA1 side in the longitudinal direction WA and the center, or between the end of the pulling WA2 side and the center. Part. In this case, the first positioning part 98 of the fixed blade 90 is changed to a position corresponding to the positioning part of the fixed blade holding part 70.

-The fixed blade holding | maintenance part 70 of embodiment has the two protrusion parts 71B. On the other hand, in the modified fixed blade holding part 70, one of the two protruding parts 71B is omitted.
-Fixed blade holding | maintenance part 70 of embodiment has each protrusion part 71B and recessed part 51Y, 52Y as a finger holding structure. On the other hand, the fixed blade holding part 70 of the modified example has only the recesses 51Y and 52Y as a finger holding structure.

  -Each protrusion part 71B and recessed part 51Y, 52Y of embodiment are formed in the edge part by the side of drawing WA2 of the fixed blade 90. As shown in FIG. On the other hand, each protrusion 71B and the recesses 51Y and 52Y of the modified example are formed at the end of the fixed blade 90 on the pressing method WA1 side.

  -Each protrusion part 71B and recessed part 51Y, 52Y of embodiment are formed in the part adjacent to the fixed blade 90 in the horizontal direction WB. On the other hand, the protrusions 71B and the recesses 51Y and 52Y of the modified example are formed in a portion adjacent to the fixed blade 90 in the longitudinal direction WA.

  -The movable blade holding | maintenance part 80 of embodiment has the hook 86 in the part adjacent to the two movable blade fixing | fixed part 85, respectively. On the other hand, the movable blade holding portion 80 of the modified example omits at least one of the two hooks 86.

  -The movable blade holding | maintenance part 80 of embodiment has the hook 86 in the part adjacent to the two movable blade fixing | fixed part 85, respectively. On the other hand, the movable blade holding part 80 of the modification has hooks 86 at portions adjacent to the four movable blade fixing parts 85.

-The movable blade holding | maintenance part 80 of embodiment has the connection part 82 in the center of the vertical direction WA. On the other hand, the movable blade holding part 80 of the modification has a connecting part at the end in the longitudinal direction WA.
-The movable blade holding | maintenance part 80 of embodiment has the connection part 82 in the center of the vertical direction WA. On the other hand, the movable blade holding part 80 of the modified example has a connecting part between the end part on the pushing direction WA1 side in the longitudinal direction WA and the center, or between the end part on the pulling WA2 side and the center.

  -The connection part 82 of embodiment is located in the centerline C1 of the apparatus main body 10, and the rotation centerline C2 of the electric motor 21. FIG. On the other hand, the connecting portion 82 of the modification is located at a predetermined distance from at least one of the center line C1 of the apparatus main body 10 and the rotation center line C2 of the electric motor 21. When the connecting portion 82 is located at a predetermined distance from only one of the center line C1 of the apparatus body 10 and the rotation center line C2 of the electric motor 21, the center line C1 of the apparatus body 10 and the electric motor 21 are located. The rotation center lines C2 do not coincide.

The blade block 60 of the embodiment has two springs 61. On the other hand, the blade block 60 of the modified example has one, or three or more springs.
The head unit 50 according to the embodiment includes a head link 53 and a relay member 54. On the other hand, in the modified head unit 50, the relay member 54 is omitted. Further, the head link 53 is connected to the third link 33 in a state where the rotation with respect to the third link 33 is possible.

  -The electric shaver 1 of embodiment has the structure which can attach the head part 50 to the apparatus main body 10, and can remove the head part 50 from the apparatus main body 10. FIG. On the other hand, in the electric razor 1 of the modified example, the head unit 50 is integrated with the apparatus main body 10.

The electric razor 1 of the embodiment has only one slit blade as the fixed blade 90. On the other hand, the modified electric razor 1 has a plurality of slit blades as the fixed blade 90.
-The electric shaver 1 of embodiment has only a slit blade as the fixed blade 90. FIG. On the other hand, the electric shaver 1 according to the modification has at least one of a slit blade and a net blade as the fixed blade 90.

  The conversion mechanism 30 according to the embodiment includes a first link 31, a second link 32, and a third link 33. On the other hand, the second conversion link 32 is omitted in the conversion mechanism 30 of the modification. In this configuration, the second arm 31B of the first link 31 is connected to the third link 33 in a rotatable state.

  -Conversion mechanism 30 of an embodiment has the 1st link 31 whose 2nd distance D2 is larger than the 1st distance D1. On the other hand, the conversion mechanism 30 of the modified example includes a first link 31 having a second distance D2 that is equal to or smaller than the first distance D1.

  -The apparatus main body 10 of embodiment has the roller 25 in the eccentric shaft 24, and has the input part 31D in the 1st link 31. As shown in FIG. On the other hand, the apparatus main body 10 of the modified example has an input portion having a function equivalent to that of the input portion 31 </ b> D in the eccentric shaft 24 and a roller having a function equivalent to the roller 25 in the first link 31. The input portion and the roller have the same relationship as the roller 25 and the input portion 31D.

  In the conversion mechanism 30 of the embodiment, the direction of the center line of the support shaft 34 is parallel to the main body lateral direction ZB. On the other hand, in the conversion mechanism 30 of the modification, the direction of the center line of the support shaft 34 is parallel to the main body depth direction ZC. When the output shaft 22 of the electric motor 21 rotates, the first arm 31A having this configuration reciprocates linearly in the body lateral direction ZB with the rotation shaft 31C as a fulcrum.

  In the blade block 60 of the embodiment, the direction of the reciprocating linear motion of the movable blade 100 is orthogonal to the longitudinal direction of the slit 93 of the fixed blade 90. On the other hand, in the blade block 60 of the modified example, the longitudinal direction of the slit 93 of the fixed blade 90 and the direction of the reciprocating linear motion of the movable blade 100 intersect at an angle different from orthogonal. As an example of this configuration, the longitudinal direction of the slit 93 of the fixed blade 90 is inclined with respect to the direction of the reciprocating linear motion of the movable blade 100.

  The eccentric shaft 24 of the driving device 20 of the embodiment is fixed to the rotating member 23. On the other hand, the drive device 20 of the modified example has a rotating member having a structure in which the rotating member 23 and the eccentric shaft 24 are integrated instead of the rotating member 23 and the eccentric shaft 24. This rotating member has the same function as the rotating member 23 and the eccentric shaft 24. In addition, the integrated structure shows the structure formed as a single member with the same material.

The rotation member 23 of the drive device 20 of the embodiment is fixed to the output shaft 22. On the other hand, the driving device 20 of the modified example has an output shaft having a structure in which the output shaft 22 and the rotating member 23 are integrated, instead of the output shaft 22 and the rotating member 23. This output shaft has functions equivalent to the output shaft 22 and the rotating member 23. In addition, the integrated structure shows the structure formed as a single member with the same material.
In the embodiment, the support shaft 34 has a center line direction parallel to the virtual plane of the operation surface 18 </ b> C of the power switch 18. On the other hand, the electric shaver 1 according to the modified example has a support shaft whose center line is orthogonal to the virtual plane of the operation surface 18 </ b> C, instead of the support shaft 34. In addition, a power switch 18 is provided on the side of the first case 11 in the main body lateral direction ZB. The support shaft of this modification has the same function as the support shaft 34.

(Additional note regarding means for solving the problem)
  (Appendix 1)
  A fixed blade, a movable blade that reciprocates linearly with respect to the fixed blade, a drive source that drives the movable blade, a main body that supports the drive source, the fixed blade, and the movable blade, and The main body includes a transmission unit that transmits the movement of the output unit to the movable blade as the reciprocating linear motion and a partition member connected to the transmission unit, and the direction of the reciprocating linear motion of the movable blade is a vertical direction. In the electric shaver that coincides with the longitudinal direction in a plan view of the fixed blade,
  The partition member includes at least a proximal convex portion projecting in a proximal direction from the movable blade side toward the drive source side and a distal convex portion projecting in a distal direction from the drive source side toward the movable blade side. Have one
  Electric razor.
  (Appendix 2)
  The transmission part penetrates the partition member
  The electric razor according to appendix 1.
  (Appendix 3)
  The partition member has the tip side convex portion,
  The transmission part penetrates the tip side convex part.
  The electric razor according to appendix 2.
  (Appendix 4)
  The partition member has an edge portion that comes into contact with the inner surface of the main body, and an outer peripheral portion inside the edge portion,
  An end portion of the edge portion in the distal direction is located in the distal direction than an end portion in the distal direction of a portion in contact with the edge portion of the outer peripheral portion.
  The electric shaver according to any one of appendices 1 to 3.
  (Appendix 5)
  The partition member is formed of a rubber material.
  The electric razor according to any one of appendices 1 to 4.

  1: Electric razor
  10: Device main body
  10A: Body case
  11: First case
  11A: Shaft fixing part
  11B: Shaft guide part
  11C: Support part
  12: Second case
  12A: Groove
  13: Third case
  14: Upper ring
  15: Lower ring
  16: Dust-proof rubber (partition member)
  16A: Center part (tip side convex part)
  16B: outer periphery
  16C: Edge
  16P: Through hole
  17: Secondary battery
  18: Power switch
  18A: Operation unit
  18B: Mounting part
  18C: Operation surface
  18D: Click part
  19: Contact bracket
  20: Drive device
  21: Electric motor (drive source)
  22: Output shaft (output unit)
  23: Rotating member
  24: Eccentric shaft
  25: Roller
  30: Conversion mechanism
  31: First link
  31A: First arm
  31B: Second arm
  31C: Rotating shaft
  31D: Input part
  32: Second link
  32A: Input end
  32B: Output end
  33: Third link (transmitter)
  33A: Fixed plate
  33B: Link shaft
  33C: Protruding ring
  33D: Support convex part
  34: Support shaft
  40: Wiring member
  41: Anode fitting
  42: Cathode fitting
  43: Motor bracket
  44: PCB bracket
  45: Circuit board
  46: current fuse
  50: Head portion
  50A: Head case
  50X: Blade block insertion hole
  51: First case
  51A: Insertion part
  51B: Link guidance part
  51C: Relay guidance part
  51D: Guide groove
  51L: Rib
  51X: Blade block insertion part
  51Y: Recess
  52: Second case
  52X: Blade block insertion part
  52Y: Recess
  53: Head link
  53A: Relay connection part
  53B: Blade connection part
  53C: protrusion
  53X: 1st part
  53Y: Second part
  53Z: Third part
  54: Relay member
  54A: Connection part
  54B: Guide part
  54C: Fixed part
  54D: protrusion
  55: Release button
  60: Blade block
  61: Spring
  70: Fixed blade holder
  71: Frame
  71A: Fixed blade insertion hole
  71B: Protruding part
  71C: Plane portion
  72: Guide part
  72A: Comb
  72B: Curved surface
  72C: tip
  73: Fixed part
  73A: Back support part
  73B: Thick wall facing part
  73C: Thin wall facing part
  74: Wall part
  74A: Fixed blade fixing part
  74B: Hook
  74C: Second positioning portion
  74D: Lower end facing part
  75: foot
  75A: Spring fixing part
  75B: Groove
  76: First discharge hole
  77: Second discharge hole
  78: Spring moving space
  80: Movable blade holding part
  81: Support
  82: connection part
  83: Spring fixing part
  84: Foot
  85: Movable blade fixing part
  86: Hook
  87: Movement restriction part
  90: Fixed blade
  90A: Shaved surface
  91: Top
  91A: support bar
  91B: Thin part
  91C: Thick part
  92: Fixed blade side wall
  92A: Arc portion
  92B: Straight wall
  93: Slit
  93A: slit middle part
  93B: Slit end
  94: Blade part
  94A: Blade middle part
  94B: Blade edge
  94C: Inclined part
  94D: Straight section
  95: Foot
  96: Fixed part
  97: hook hook
  98: 1st positioning part
  100: Movable blade
  101: Top
  102: Movable blade side wall
  103: slit
  104: Blade part
  105: Foot
  106: Fixed part
  107: hook hook part
  200: Cap
  530: Conversion mechanism
  531: Face gear
  532: Eccentric cam
  540: Movable blade
  550: Blade case
  RA: Body space
  RB: Base end side space
  RC: Space on the tip side
  H: 髭
  S: Skin surface
  X: Angle
  C1: Center line
  C2: Center line of rotation
  D1: First distance
  D2: Second distance
  E1: Extension line
  E2: Extension line
  BA: Intermediate blade width
  BD: Edge blade width
  SA: Intermediate slit width
  SD: End slit width
  L: Direction of rotation
  L1: Forward direction
  L2: Reverse direction
  WA: Vertical direction
  WA1: How to push
  WA2: Pull
  WB: Horizontal direction
  WC: Depth direction
  WC1: Front
  WC2: Behind
  ZA: axial direction
  ZA1: Up
  ZA2: Down
  ZB: Horizontal direction of main body
  ZC: Body depth direction
  ZC1: forward
  ZC2: Back

Claims (6)

  A fixed blade,
  A movable blade that reciprocates linearly with respect to the fixed blade;
  An apparatus main body that supports the movable blade and the fixed blade so that the longitudinal direction of the fixed blade coincides with the direction of the reciprocating linear motion of the movable blade in a plan view of the fixed blade;
  A driving source supported by the apparatus main body and driving the movable blade;
  A transmission unit that reciprocates linearly with respect to the fixed blade by reciprocating linearly moving with respect to the device main body in the longitudinal direction of the device main body according to the output of the drive source;
  A proximal-side convex portion projecting in a proximal direction that is a direction from the movable blade side toward the drive source side in the longitudinal direction of the apparatus main body, and the movable blade from the drive source side in the longitudinal direction of the apparatus body A through-hole is formed that includes at least one of the distal-side convex portion protruding in the distal direction that is directed toward the side, and into which the transmission portion is inserted so as to penetrate the proximal-side convex portion or the distal-side convex portion. And a partition member that can be deformed in accordance with a reciprocating linear motion of the transmission portion with respect to the apparatus main body.
  Electric razor.   The partition member is formed around a central portion that constitutes the proximal-side convex portion or the distal-end-side convex portion, an outer peripheral portion that is formed so as to surround the central portion, and a periphery of the outer peripheral portion, Includes an edge attached to the inner surface of the
  The electric razor according to claim 1.   The shape of the edge is annular,
  The apparatus main body has a groove portion into which the edge portion is fitted.
  The electric shaver according to claim 2.   The end of the edge in the longitudinal direction of the apparatus main body protrudes in the tip direction from the connecting portion between the outer peripheral portion and the edge.
  The electric shaver according to claim 2 or 3.   The partition member partitions a main body space, which is a space in the apparatus main body, into a distal end side space, which is a space in which the movable blade is disposed, and a proximal end space, in which the drive source is disposed.
  The electric shaver according to any one of claims 1 to 4.   The apparatus main body includes a head portion that supports the movable blade and the fixed blade so that the longitudinal direction of the fixed blade coincides with the direction of the reciprocating linear motion of the movable blade in a plan view of the fixed blade,
  A cap is further provided to cover the head portion by being attached to the apparatus main body.
  The electric shaver according to any one of claims 1 to 5.