JP6052550B2 - Electric razor - Google Patents

Description

  The present invention relates to an electric razor.

  Patent Document 1 discloses an example of a conventional electric shaver. FIG. 5 shows an electric razor 900 of Patent Document 1. The electric razor 900 has a grip portion 910, a blade head 920, a solenoid 930, and a rod 940. The blade head 920 includes a head housing 921, an outer blade 922, and a head base 923. The solenoid 930 is disposed inside the grip portion 910.

  The solenoid 930 includes a frame 931, a bobbin 932, a coil 933, a fixed iron core 934, and a movable iron core 935. The fixed iron core 934 and the movable iron core 935 are opposed to each other with a gap 936 interposed therebetween. The coil 933 is wound around the bobbin 932. The rod 940 is coupled to the movable iron core 935. The tip of the rod 940 is coupled to the head base 923.

  The solenoid 930 reciprocates the movable iron core 935 and the rod 940 by repeatedly energizing and de-energizing the coil 933. The solenoid 930 vibrates the blade head 920 by reciprocating the rod 940. For this reason, the force which presses the blade head 920 against skin becomes large.

  The movable iron core 935 is separated from the fixed iron core 934 as the load on the blade head 920 increases. For this reason, the gap 936 becomes large. For this reason, the movable iron core 935 receives a small suction force from the fixed iron core 934. For this reason, the force which presses the blade head 920 against skin becomes small.

  As described above, the electric razor 900 has a structure that reduces the vibration force of the blade head 920 as the load on the blade head 920 increases. This structure is intended to maintain the pressing force, which is the force by which the user presses the blade head 920 against the skin, and the resultant force of the vibration force transmitted from the solenoid 930 to the blade head 920 at a constant magnitude.

JP 2009-232890 A

The inventor of the present application has found that the electric shaver 900 has the following problems.
The electric razor 900 is considered that when the pressing force generated by the user exceeds a certain value, the vibration force of the solenoid 930 is not generated, or the vibration force of the solenoid 930 takes a minute magnitude. The vibration force of the solenoid 930 does not change even when the pressing force of the user increases when the pressing force of the user is greater than a certain value. That is, the resultant force of the pressing force of the user and the vibration force of the solenoid 930 increases substantially depending only on the pressing force when the pressing force of the user is greater than a certain value.

  On the other hand, the blade head 920 increases the amount of skin to be introduced as the pressing force of the user increases. For this reason, the electric shaver 900 has a possibility of introducing excessive skin into the blade head 920 when the pressing force of the user increases in a range of a certain value or more. When the skin is excessively introduced into the blade head 920, the skin may be damaged by the reciprocating motion of the inner blade of the blade head 920.

  The present invention has been invented based on the above background, and an object thereof is to provide an electric razor that contributes to making it difficult to damage skin.

  An independent form of the electric razor has the following items. An electric razor, wherein the electric razor has a main body portion, a hair removal portion, and a vibration generation portion, the main body portion supports the hair removal portion, and the vibration generation portion includes a magnetic force generation portion and an output. The magnetic force generation unit includes a coil and an input side iron core, forms a magnetic field by the coil, causes the suction force of the input side iron core to act on the output movable unit, and the output movable unit is A vibration component and an output side iron core, the output side iron core is coupled to the vibration component and moves with respect to the magnetic force generation unit based on an attractive force of the input side iron core, and the vibration component is Vibration is transmitted to the hair removal part based on the movement of the output side iron core, and the output side iron core is brought closer to the input side iron core as the load on the hair removal part increases.

  This inventor obtained the following knowledge from the result of the experiment regarding the relationship between a hair removal part and skin. In addition, pressing force shows the force which the user is acting on skin through a hair removal part in the state in which the hair removal part is pressed on skin. The vibration force indicates a force transmitted by the vibration component to the hair removal unit due to the vibration of the vibration component based on the suction force of the input side iron core.

  When the pressing force is large, the hair removal portion is intermittently displaced in the separation direction with respect to the skin when the vibration force of the vibration generating portion is input. That is, the vibration force of the vibration generating part has an action of intermittently displacing the hair removal part with respect to the skin when a large pressing force is acting on the skin. For this reason, even if the hair removal part introduce | transduces the skin of the quantity larger than an appropriate range, since the pressing force is large, the introduction | transduction amount of skin is reduced by the displacement to a separation direction. For this reason, a hair removal part becomes difficult to damage skin.

  The electric razor has a vibrating part. The vibrating component brings the output side iron core closer to the input side iron core as the load on the hair removal portion increases. For this reason, it becomes easier to obtain the effect of making it difficult to damage the skin.

  The hair removal part receives reaction force from the skin. The reaction force received by the hair removal unit is transmitted to the vibration component. The vibration component is displaced toward the main body by the reaction force received by the hair removal unit. The output side iron core is coupled to the vibration component. For this reason, the output side iron core is displaced in the same direction when the vibration component is displaced toward the main body by the reaction force received by the hair removal unit. For this reason, the output side iron core approaches the input side iron core. The amount of displacement of the vibration component toward the main body increases as the reaction force received by the hair removal unit increases. For this reason, the distance between the output-side iron core and the input-side iron core becomes closer as the reaction force received by the hair removal portion increases. That is, the vibrating component brings the output side iron core closer to the input side iron core as the load on the hair removal portion increases.

  As the distance between the input side iron core and the output side iron core becomes shorter when the coil is not energized, the attractive force acting on the output side iron core increases. For this reason, as the distance between the input-side iron core and the output-side iron core becomes shorter when the coil is not energized, the vibration component accumulates more energy during the period of being attracted to the input-side iron core. For this reason, in the vibration component, as the distance between the input-side iron core and the output-side iron core becomes shorter when the coil is not energized, the vibration force generated when energization of the coil is stopped increases. That is, the vibration force of the vibration generating unit increases as the pressing force increases.

  For this reason, in the hair removal unit, the vibration force input from the vibration generation unit increases as the pressing force increases. For this reason, it becomes easy to displace the hair removal part intermittently in the separation direction with respect to the skin as the pressing force acting on the skin increases. For this reason, the effect which makes it hard to damage skin is heightened.

  This electric razor contributes to making it hard to damage the skin.

The block diagram of the electric shaver of 1st Embodiment. The model figure of the vibration generation part of FIG. The model figure which shows the state which the vibration component of FIG. 2 and the vibration input part contacted. The model figure of the vibration generation part of 2nd Embodiment. Model of a conventional electric razor.

  (An example of an electric razor can take)
  [1] In one form of the electric razor, the electric razor includes a main body portion, a hair removal portion, and a vibration generation portion, the main body portion supports the hair removal portion, and the vibration generation portion includes a magnetic force. A generator and an output movable part, the magnetic force generator includes a coil and an input side iron core, forms a magnetic field by the coil, and causes the attraction force of the input side iron core to act on the output movable part, The output movable part has a vibration part and an output side iron core, and the output side iron core is coupled to the vibration part and moves with respect to the magnetic force generation part based on an attractive force of the input side iron core, and the vibration The component transmits vibration to the hair removal part based on the movement of the output side iron core, and as the load on the hair removal part increases, the output side iron core approaches the input side iron core, and the electric shaver is A gap between the hair removal unit and the vibration component In addition, the gap is reduced as the load on the hair removal part increases, and the vibration component does not transmit vibration to the hair removal part when the gap exists, and the gap exists. When not, vibration is transmitted to the hair removal part.
  [2] In one form of the electric razor, the electric razor has a main body part, a hair removal part, and a vibration generation part, the main body part supports the hair removal part, and the vibration generation part has a magnetic force. A generator and an output movable part, the magnetic force generator includes a coil and an input side iron core, forms a magnetic field by the coil, and causes the attraction force of the input side iron core to act on the output movable part, The output movable part has a vibration part and an output side iron core, and the output side iron core is coupled to the vibration part and moves with respect to the magnetic force generation part based on an attractive force of the input side iron core, and the vibration The component transmits vibration to the hair removal part based on the movement of the output side iron core, and as the load on the hair removal part increases, the output side iron core approaches the input side iron core, and the electric shaver is A position adjusting unit, the position adjusting unit; , To change the initial position of the hair removal unit with respect to the vibration component.
  [3] One embodiment of the electric razor includes a hair removal part that shave skin hair, a main body part that supports the hair removal part, a direction in which the hair removal part approaches the skin relative to the main body part, and the A vibration generating unit that vibrates in a driving direction that is a direction away from the skin, and the vibration generating unit outputs an oscillation force that is a force that vibrates the hair removing unit in the driving direction to the hair removing unit. A movable portion and a magnetic force generating portion that generates a magnetic attraction force so that the output movable portion vibrates in the driving direction, and the output is increased as a pressing force that is a force pressing the hair removal portion against the skin increases. The vibration force configured to increase the magnetic attractive force acting on the movable part, and further capable of intermittently separating the hair removal part from the skin when the pressing force is larger than a reference pressing force. Configured to be able to transmit to the hair removal unit There.
  [4] In the example of the electric razor according to [3], the magnetic force generator includes a coil to which a current is supplied, and an input-side iron core that generates a magnetic attractive force by a magnetic flux generated from the coil, The output movable part is capable of vibrating in the driving direction by the magnetic attraction force, a vibration component that transmits the vibration force to the hair removal part by being displaced in the driving direction with respect to the hair removal part, and And an output-side iron core coupled to the vibration component so as to approach the input-side iron core as the pressing force increases.
  [5] In the example of the electric razor according to [3] or [4], the vibration generating unit may be configured to prevent the skin introduced into the hair removal unit when the pressing force is larger than the reference pressing force. When the skin introduction amount that is the amount is close to the upper limit of the appropriate range, or when the skin introduction amount is likely to be larger than the appropriate range, the hair removal portion may be intermittently separated from the skin. A possible vibration force can be generated in the output movable part.

(First embodiment)
FIG. 1 shows an embodiment of an electric razor 1.
The electric razor 1 includes a main body unit 10, a hair removal unit 20, an inner blade drive unit 50, a power switch 60, a control unit 70, a power supply unit 80, a vibration generation unit 100, and a vibration input unit 130. The electric razor 1 defines a longitudinal direction, a width direction, and a depth direction. The longitudinal direction of the electric razor 1 indicates both directions in the longitudinal direction when the electric razor 1 is viewed from the front. The width direction of the electric razor 1 indicates a bidirectional direction orthogonal to the longitudinal direction when the electric razor 1 is viewed from the front. The depth direction of the electric razor 1 indicates both directions orthogonal to the longitudinal direction and the width direction in the front view of the electric razor 1.

  The main body 10 has a shape that can be gripped by the user. The main body 10 supports the hair removal unit 20. The main body unit 10 accommodates a part of the inner blade driving unit 50, the control unit 70, the power supply unit 80, and the vibration generating unit 100 inside the main body unit 10.

  The hair removal unit 20 includes an outer blade block 30 and an inner blade block 40. The hair removal unit 20 reciprocates the inner blade block 40 relative to the outer blade block 30 in the width direction of the electric razor 1. The hair removal unit 20 shave the hair introduced into the outer blade block 30 by the reciprocating motion of the inner blade block 40.

  The outer blade block 30 includes an outer blade case 31, an outer blade 32, and an outer blade inner space 33. The outer blade block 30 has a structure in which an outer blade case 31 and an outer blade 32 formed as individual parts are coupled to each other. The outer blade block 30 accommodates the inner blade block 40 in the outer blade inner space 33 (see FIG. 2).

  The outer blade block 30 is pressed against the skin 200 by the pressing force FF of the user when the electric razor 1 is used for hair removal. The pressing force FF indicates a force applied by the user to the skin 200 via the outer blade block 30 when the outer blade block 30 is pressed against the skin 200. The outer blade block 30 receives a reaction force from the skin 200 when pressed against the skin 200. The reaction force that the outer blade block 30 receives from the skin 200 (hereinafter, “skin reaction force FR”) changes according to the pressing force FF.

  The outer blade case 31 is coupled to the main body 10 via a floating structure. The floating structure changes the posture of the outer cutter case 31 with respect to the main body 10. The outer cutter case 31 can be displaced in the width direction, the height direction, and the depth direction with respect to the main body 10. The outer cutter case 31 can be displaced in the rotational direction with respect to the main body 10 around an axis parallel to the width direction and an axis parallel to the depth direction.

  The outer blade 32 has a plurality of outer blade holes (not shown). The outer blade 32 introduces bristles into the outer blade inner space 33 through the outer blade hole. When the pressing force FF is large, the outer blade 32 introduces the skin 200 into the outer blade inner space 33 through the outer blade hole. The amount of skin 200 introduced into the outer blade inner space 33 (hereinafter referred to as “skin introduction amount S”) is defined as the volume of the skin 200 existing on the outer blade inner space 33 side with respect to the outer blade hole as an example. Can do.

  The inner blade block 40 has a joint part 41 and an inner blade 42. The inner blade block 40 has a structure in which a joint part 41 and an inner blade 42 formed as individual parts are coupled to each other. The inner blade block 40 shaves hair in cooperation with the outer blade block 30.

  The joint component 41 is coupled to the inner blade 42 at a portion on the outer blade case 31 side. The joint component 41 is coupled to the inner blade drive unit 50 at a portion on the main body 10 side. The joint component 41 has a structure capable of displacement in the width direction with respect to the main body 10 and the outer blade block 30.

  The inner blade drive unit 50 includes a linear actuator as an example. The inner blade drive unit 50 is driven based on a drive signal input from the control unit 70. The inner blade drive unit 50 reciprocates the joint component 41 in the width direction of the electric razor 1.

  The vibration generating unit 100 transmits the vibration force FV to the outer blade block 30 via the vibration input unit 130. The vibration force FV of the vibration generating unit 100 acts in the height direction of the outer blade block 30. The vibration generating unit 100 suppresses the skin introduction amount S from being larger than the appropriate range by inputting the vibration force FV to the outer blade block 30.

  The power switch 60 is formed on the case of the main body 10. The power switch 60 has the form of a human machine interface. The power switch 60 is operated to turn on and off the power of the electric shaver 1. The power switch 60 inputs an operation signal to the control unit 70 every time it is pushed.

  The control unit 70 controls at least the inner blade driving unit 50 and the vibration generating unit 100. The control unit 70 starts driving the inner blade driving unit 50 and the vibration generating unit 100 when the power switch 60 is turned on. The control unit 70 stops the driving of the inner blade driving unit 50 and the vibration generating unit 100 when the power switch 60 of the main body unit 10 is turned off.

  The power supply unit 80 is disposed inside the main body unit 10. For example, the power supply unit 80 supplies the power of the primary battery or the secondary battery to the power block of the electric shaver 1. The power block of the electric razor 1 includes an inner blade driving unit 50, a vibration generating unit 100, and a control unit 70.

FIG. 2 shows a model configuration of the vibration generating unit 100 and the vibration input unit 130.
The vibration input unit 130 receives a vibration force FV generated by the vibration generation unit 100. The vibration input unit 130 is integrally formed of the same material as that of the outer blade case 31. The vibration input unit 130 includes an input unit space 131 and an input unit facing surface 132. The input part space 131 is open on the main body part 10 side. The input unit facing surface 132 is in contact with the vibration component 121 of the vibration generating unit 100.

  The vibration generating unit 100 includes a case 101, a magnetic force generating unit 110, and an output movable unit 120. The vibration generating unit 100 forms a solenoid. The vibration generating unit 100 transmits the vibration force FV to the skin 200 by vibrating the vibration input unit 130 and the outer blade block 30. The vibration force FV indicates the force that the vibration component 121 transmits to the vibration input unit 130 due to the vibration of the vibration component 121 of the output movable unit 120 based on the suction force of the input side iron core 113 of the magnetic force generation unit 110.

  The vibration generating unit 100 defines the driving direction D. The driving direction D indicates the bidirectional direction of the displacement direction of the vibration component 121. The driving direction D includes a pressing direction DU and a pulling direction DD. The pressing direction DU indicates a direction from the main body 10 side toward the hair removal unit 20 side. The pull-in direction DD indicates a direction from the hair removal unit 20 side toward the main body unit 10 side.

  The magnetic force generator 110 is disposed inside the case 101. The magnetic force generation unit 110 includes a bobbin 111, a coil 112, and an input side iron core 113. The magnetic force generation unit 110 causes the attractive force of the input side iron core 113 to act on the output movable unit 120.

  The bobbin 111 is made of a resin material. The bobbin 111 is coupled to the case 101. The coil 112 is wound around the bobbin 111. A current is passed through the coil 112 based on the control of the control unit 70. The input side iron core 113 is made of a magnetic material. The input side iron core 113 is coupled to the case 101.

  The output movable unit 120 is disposed inside the case 101. The output movable unit 120 includes a vibration part 121, an output side iron core 125, and a load input part 126. The output movable unit 120 reciprocates in the driving direction D based on the suction force of the input side iron core 113.

  The vibration component 121 is made of a resin material. The vibration component 121 includes a coupling part 122 and a contact part 123. The vibration component 121 has a structure in which the coupling portion 122 and the contact portion 123 are integrally formed of the same material. A part of the coupling part 122 and the contact part 123 are arranged in the input part space 131 of the vibration input part 130. The contact portion 123 has a contact portion facing surface 124 that contacts the input portion facing surface 132.

  The output side iron core 125 is made of a magnetic material. The output side iron core 125 is coupled to the coupling portion 122 of the vibration component 121. The output side iron core 125 moves integrally with the vibration component 121 by the suction force of the input side iron core 113.

  The load input component 126 has a form of a coil spring as an example. The load input component 126 inputs a force acting in the pressing direction DU to the vibration component 121. The load input component 126 is compressed and deformed when a force in the pull-in direction DD acts on the vibration component 121.

  The input side iron core 113 and the output side iron core 125 are opposed to each other with a gap (hereinafter, “internal gap 102”) in the driving direction D. The size of the internal gap 102 (hereinafter, “internal gap distance LA”) varies depending on at least one of the skin reaction force FR acting on the outer blade block 30 and the energized state of the coil 112. For example, the internal gap distance LA can be defined as the distance between the facing surface of the input-side iron core 113 and the facing surface of the output-side iron core 125. The skin reaction force FR acting on the outer blade block 30 corresponds to one of the main components of the load acting on the hair removal unit 20.

  The contact portion facing surface 124 and the input portion facing surface 132 are opposed to each other in the driving direction D via a gap (hereinafter, “external gap 103”). The size of the external gap 103 (hereinafter, “external gap distance LB”) varies depending on at least one of the skin reaction force FR acting on the outer blade block 30 and the energized state of the coil 112.

  The vibration generating unit 100 has at least two driving states. The two driving states indicate an “energized state” and a “non-energized state”. The energized state indicates a state in which a current is flowing through the coil 112 under the control of the control unit 70. The non-energized state indicates a state where energization of the coil 112 by the control unit 70 is stopped. The vibration generating unit 100 forms the following operation under the control of the control unit 70.

  The controller 70 starts energizing the coil 112 at regular intervals. The coil 112 forms a magnetic field when a current flows. The magnetic flux generated from the coil 112 passes through the input side iron core 113. The input-side iron core 113 applies an attractive force to the output-side iron core 125 when magnetic flux passes through. For this reason, the output side iron core 125 and the vibration component 121 are displaced in the drawing direction DD by the suction force of the input side iron core 113. The vibration component 121 increases the amount of deformation in the compression direction of the load input component 126 (hereinafter referred to as “compression deformation amount V”) by being displaced in the pull-in direction DD. The compression deformation amount V in the energized state is larger than the compression deformation amount V in the non-energized state.

  The suction displacement amount W of the vibration component 121 and the output side iron core 125 changes according to the length of the internal gap distance LA in the non-energized state. The suction displacement amount W indicates an amount by which the output side iron core 125 and the vibration component 121 are displaced in the pull-in direction DD based on the suction force of the input side iron core 113. The attractive force of the input side iron core 113 acting on the output side iron core 125 increases as the internal gap distance LA in the non-energized state becomes shorter. For this reason, the suction displacement amount W increases as the internal gap distance LA in the non-energized state becomes shorter.

  The internal gap distance LA and the external gap distance LB change when the vibration component 121 is displaced in the pull-in direction DD. That is, the internal gap distance LA and the external gap distance LB change when the driving state of the vibration generating unit 100 changes from the non-energized state to the energized state. The internal gap distance LA is shortened with a change from the non-energized state to the energized state. The external gap distance LB increases with a change from the non-energized state to the energized state.

  The difference between the internal gap distance LA in the energized state and the internal gap distance LA in the non-energized state corresponds to the suction displacement amount W. The difference between the external gap distance LB in the energized state and the external gap distance LB in the non-energized state corresponds to the suction displacement amount W.

  The controller 70 stops energization of the coil 112 after a predetermined time has elapsed since the energization of the coil 112 was started. The coil 112 does not form a magnetic field due to no current flowing. The input side iron core 113 does not apply an attractive force to the output side iron core 125 when the coil 112 does not form a magnetic field. For this reason, the output side iron core 125 and the vibration component 121 are displaced in the pressing direction DU by the restoring force of the load input component 126 when the drive state of the vibration generating unit 100 changes from the energized state to the non-energized state. The amount of compressive deformation V of the load input component 126 becomes smaller than the amount of compressive deformation V in the energized state when the output side iron core 125 and the vibration component 121 are displaced in the pressing direction DU.

  The internal gap distance LA and the external gap distance LB change when the vibration component 121 is displaced in the pressing direction DU. That is, the internal gap distance LA and the external gap distance LB change when the driving state of the vibration generating unit 100 changes from the energized state to the non-energized state. The internal gap distance LA increases with a change from the energized state to the non-energized state. The external gap distance LB is shortened with a change from the energized state to the non-energized state.

  The vibration component 121 and the output side iron core 125 vibrate with respect to the magnetic force generation unit 110 and the vibration input unit 130 by alternately forming an energized state and a non-energized state. The vibration component 121 changes the transmission form of vibration to the vibration input unit 130 according to the relationship with the vibration input unit 130 in a non-energized state.

FIG. 3 shows a state in which the vibration component 121 and the vibration input unit 130 are in contact with each other.
When the vibration component 121 is not in contact with the vibration input unit 130 in a non-energized state, the vibration component 121 does not transmit vibration to the vibration input unit 130. That is, the vibration component 121 does not transmit vibration to the vibration input unit 130 when the external gap distance LB in the non-energized state is greater than “0”. For this reason, the vibration generating unit 100 does not input the vibration force FV to the outer blade block 30.

  When the vibration component 121 is in contact with the vibration input unit 130 in a non-energized state, the vibration component 121 transmits vibration to the vibration input unit 130. That is, the vibration component 121 transmits vibration to the vibration input unit 130 when the external gap distance LB in the non-energized state is “0”. The vibration component 121 inputs vibration force FV to the vibration input unit 130 and the outer blade block 30 by transmitting vibration to the vibration input unit 130.

  The external gap distance LB in the non-energized state changes according to the position in the driving direction D of the vibration input unit 130 with respect to the vibration component 121. The vibration input unit 130 is displaced integrally with the outer blade block 30. For this reason, the external gap distance LB in the non-energized state changes in accordance with the position in the driving direction D of the outer cutter block 30 relative to the main body 10 (hereinafter, “outer cutter position C”).

  The outer blade block 30 is displaced in the retracting direction DD according to the skin reaction force FR. For this reason, the outer blade position C changes according to the skin reaction force FR. The skin reaction force FR changes according to the pressing force FF. For this reason, the outer cutter position C changes according to the pressing force FF. The outer cutter position C changes in the range from the maximum separation position CU to the maximum approach position CD. The outer cutter position C has a component contact position CM between the maximum separation position CU and the maximum approach position CD.

  The maximum separation position CU indicates a position where the outer blade block 30 is most separated from the main body 10 in the driving direction D. The maximum approach position CD indicates a position where the outer blade block 30 is closest to the main body 10 in the driving direction D. The component contact position CM indicates a position at which the vibration input unit 130 starts to contact the vibration component 121 without the outer blade block 30 being displaced in the pull-in direction DD.

  The outer blade block 30 takes the maximum separation position CU when the skin reaction force FR is not acting. The outer blade block 30 takes the maximum approach position CD when displaced in the retracting direction DD with respect to the main body 10 due to the skin reaction force FR acting. The outer blade position C can be described by a displacement amount (hereinafter referred to as “outer blade displacement amount XB”) of the outer blade block 30 in the drawing direction DD with respect to the main body portion 10.

  The outer blade displacement amount XB takes the minimum displacement amount XBL when the outer blade position C takes the maximum separation position CU. The outer blade displacement amount XB changes according to the outer blade position C when the outer blade position C is included in the range from the maximum separation position CU to the component contact position CM. The outer blade displacement amount XB takes the reference displacement amount XBM when the outer blade position C takes the component contact position CM. The outer blade displacement amount XB changes according to the outer blade position C when the outer blade position C is included in the range from the component contact position CM to the maximum approach position CD. The outer blade displacement amount XB takes the maximum displacement amount XBH when the outer blade position C takes the maximum approach position CD.

  The external gap distance LB in the non-energized state is the longest in the change range of the external gap distance LB when the outer blade position C takes the maximum separation position CU. That is, the external gap distance LB in the non-energized state becomes the longest in the change range of the external gap distance LB when the outer blade displacement amount XB takes the minimum displacement amount XBL.

  When the outer blade position C is included in the range between the maximum separation position CU and the component contact position CM, the external gap distance LB in the non-energized state becomes shorter as the outer blade position C approaches the component contact position CM. That is, the external gap distance LB in the non-energized state becomes shorter as the outer blade displacement amount XB increases when the outer blade displacement amount XB is included in the range between the minimum displacement amount XBL and the reference displacement amount XBM.

  The external gap distance LB in the non-energized state is “0” when the outer blade position C is the component contact position CM. That is, the external gap distance LB in the non-energized state is “0” when the outer blade displacement amount XB is the reference displacement amount XBM.

  The external gap distance LB in the non-energized state is “0” when the outer blade position C is included in the range from the component contact position CM to the maximum approach position CD. That is, the external gap distance LB in the non-energized state is “0” when the outer blade displacement amount XB is included in the range from the reference displacement amount XBM to the maximum displacement amount XBH.

  When the outer blade position C is included in the range from the component contact position CM to the maximum approach position CD, the outer blade block 30 pulls the vibrating component 121 into the magnetic force generator 110 as the outer blade displacement amount XB increases. Displace in the direction DD. The outer blade block 30 changes the reference part position PX of the vibration part 121 by displacing the vibration part 121 in the pull-in direction DD.

  The reference component position PX indicates the position of the vibration component 121 with respect to the magnetic force generation unit 110 in a non-energized state. The reference component position PX changes in the range from the minimum suction position PXU to the maximum suction position PXD according to the change in the outer blade position C.

  The reference part position PX takes the minimum suction position PXU when the outer cutter position C takes the maximum separation position CU. That is, the reference part position PX takes the minimum suction position PXU when the outer blade displacement amount XB takes the minimum displacement amount XBL.

  When the outer blade position C is included in the range between the maximum separation position CU and the component contact position CM, the reference component position PX takes the minimum suction position PXU without reacting to the change in the outer blade position C. That is, when the outer blade displacement amount XB is included in the range between the minimum displacement amount XBL and the reference displacement amount XBM, the reference component position PX does not react to the change in the outer blade displacement amount XB, and the minimum suction position PXU is determined. take.

  When the outer cutter position C is included in the range from the component contact position CM to the maximum approach position CD, the reference part position PX approaches the maximum suction position PXD as the outer cutter position C approaches the maximum approach position CD. That is, when the outer blade displacement amount XB is included in the range from the reference displacement amount XBM to the maximum displacement amount XBH, the reference component position PX approaches the maximum suction position PXD as the outer blade displacement amount XB approaches the maximum displacement amount XBH. .

  The reference part position PX takes the maximum suction position PXD when the outer cutter position C takes the maximum approach position CD. That is, the reference part position PX takes the maximum suction position PXD when the outer blade displacement amount XB takes the maximum displacement amount XBH.

  The internal gap distance LA in the non-energized state changes according to the reference part position PX. The suction displacement amount W changes according to the internal gap distance LA in the non-energized state. Therefore, the suction displacement amount W changes according to the reference part position PX.

  When the reference part position PX takes the minimum suction position PXU, the internal gap distance LA in the non-energized state becomes the longest within the change range corresponding to the reference part position PX. For this reason, when the reference part position PX takes the minimum suction position PXU, the suction displacement amount W becomes the smallest within a change range corresponding to the reference part position PX.

  The internal gap distance LA in the non-energized state becomes shorter as the reference part position PX approaches the maximum suction position PXD from the minimum suction position PXU. For this reason, the suction displacement amount W increases as the reference part position PX approaches the maximum suction position PXD from the minimum suction position PXU.

  When the reference part position PX takes the maximum suction position PXD, the internal gap distance LA in the non-energized state is the shortest within the change range corresponding to the reference part position PX. For this reason, when the reference part position PX takes the maximum suction position PXD, the suction displacement amount W becomes the largest within a change range corresponding to the reference part position PX.

The suction displacement amount W changes as follows according to the outer cutter position C.
The suction displacement amount W does not react to a change in the outer cutter position C when the outer cutter position C is included in a range on the maximum separation position CU side with respect to the component contact position CM. When the outer cutter position C is included in the range from the component contact position CM to the maximum approach position CD, the suction displacement amount W increases as the outer cutter position C approaches the maximum approach position CD.

The vibration component 121 transmits vibration to the vibration input unit 130 as follows.
When the outer blade position C is included in the range from the component contact position CM to the maximum approach position CD, the vibration component 121 is in contact with the vibration input unit 130 when the drive state of the vibration generation unit 100 is a non-energized state. Yes.

  The vibration component 121 is displaced in the pull-in direction DD when the driving state of the vibration generating unit 100 changes from the non-energized state to the energized state. The contact part 123 is separated from the vibration input part 130 according to the displacement of the vibration part 121. The internal gap distance LA is shortened according to the displacement of the vibration component 121. The external gap distance LB becomes longer according to the displacement of the vibration component 121.

  The vibration component 121 is displaced in the pressing direction DU when the driving state of the vibration generating unit 100 changes from the energized state to the non-energized state. The internal gap distance LA becomes longer according to the displacement of the vibration component 121. The external gap distance LB is shortened according to the displacement of the vibration component 121. The contact part 123 collides with the vibration input part 130 according to the displacement of the vibration part 121.

  Therefore, the vibration component 121 transmits an impact load as the vibration force FV to the vibration input unit 130. For this reason, the outer blade block 30 transmits the impact load transmitted to the vibration input unit 130 to the skin 200. That is, the outer blade block 30 transmits the resultant force of the pressing force FF and the vibration force FV to the skin 200.

The electric razor 1 has the following operations.
The outer cutter position C changes according to the skin reaction force FR. The outer cutter position C approaches the maximum approach position CD as the skin reaction force FR increases. The outer blade position C reaches the component contact position CM when the skin reaction force FR takes the reference skin reaction force FRX. The pressing force FF takes the reference pressing force FFX when the skin reaction force FR takes the reference skin reaction force FRX.

  For this reason, the outer cutter position C takes the component contact position CM when the pressing force FF takes the reference pressing force FFX. For this reason, the outer blade block 30 brings the vibration input unit 130 into contact with the vibration component 121 when the pressing force FF changes from less than the reference pressing force FFX to a magnitude equal to or larger than the reference pressing force FFX. For this reason, when the pressing force FF changes from a value less than the reference pressing force FFX to a value equal to or larger than the reference pressing force FFX, the vibration component 121 starts to transmit vibration to the vibration input unit 130 and the outer blade block 30.

  The skin introduction amount S is included in the appropriate range when the pressing force FF is less than the reference pressing force FFX, and has a certain margin with respect to the upper limit of the appropriate range. When the pressing force FF is greater than or equal to the reference pressing force FFX and the difference between the pressing force FF and the reference pressing force FFX is small, the skin introduction amount S has a small margin with respect to the upper limit of the appropriate range. When the pressing force FF is greater than or equal to the reference pressing force FFX, and the difference between the pressing force FF and the reference pressing force FFX is large, the skin introduction amount S is likely to exceed the appropriate range.

  For this reason, the timing at which the vibration component 121 begins to transmit vibration to the vibration input unit 130 and the outer blade block 30 is such that the skin introduction amount S exceeds the appropriate range from the state where the risk that the skin introduction amount S exceeds the appropriate range is low. This corresponds to the timing when the state changes to a high state. For this reason, the user can recognize that the skin introduction amount S is likely to exceed the appropriate range based on the fact that the outer blade block 30 starts to vibrate in the driving direction D. That is, the electric razor 1 can notify the user of the level of the skin introduction amount S by vibrating the outer blade block 30 in the driving direction D.

  This inventor conducted the test which confirms the change of the relationship between the outer blade block 30 and the skin 200 with the change of pressing force FF and vibration force FV. The inventor of the present application has obtained the following knowledge from the results of this test.

  In the state where the pressing force FF is less than the reference pressing force FFX, the outer blade block 30 is improved in adhesion with the skin 200 when at least one of the pressing force FF and the vibration force FV increases. For this reason, the amount of hair shaved by the hair removal unit 20 is likely to increase.

  When the pressing force FF is greater than or equal to the reference pressing force FFX, the outer blade block 30 is not input with the vibration force FV of the vibration generating unit 100 or when the input vibration force FV is small. There is a high risk of introducing skin 200 in an amount exceeding the appropriate range.

  When the pressing force FF is greater than or equal to the reference pressing force FFX, the outer blade block 30 receives from the skin 200 when the vibration force FV that is greater than or equal to the reference vibration force FVX is input from the vibration generating unit 100. It becomes easy to displace intermittently in the separation direction. For this reason, the skin introduction amount S tends to decrease.

  The displacement in the separation direction of the outer blade block 30 based on the vibration force FV indicates a displacement having a vector in a direction opposite to the direction in which the outer blade block 30 is pressed against the skin 200 or a vector in a direction close to the opposite direction.

  The outer blade block 30 has a case where a space is formed between the skin 200 and a case where a space is not formed between the skin 200 and the skin 200 due to the displacement in the separation direction based on the vibration force FV. The outer blade block 30 forms a state in which the skin 200 is not introduced due to the displacement in the separation direction based on the vibration force FV, or a state in which the skin introduction amount S is smaller than that before the displacement in the separation direction. When the outer blade block 30 does not form a displacement in the separation direction based on the vibration force FV by displacing in the separation direction based on the vibration force FV regardless of whether or not a space is formed between the outer blade block 30 and the skin 200. The skin introduction amount S is reduced as compared with.

  For this reason, even if the skin 200 of the outer blade block 30 introduce | transduces the magnitude | size of the pressing force FF more than the reference | standard pressing force FFX and introduce | transduces the skin 200 of the amount larger than an appropriate range, it is skin by displacement in a separation direction. The introduction amount S is decreased. For this reason, skin 200 becomes difficult to be damaged. That is, the vibration force FV of the vibration generating unit 100 is intermittently separated from the skin 200 when the pressing force FF that is greater than the reference pressing force FFX is acting on the skin 200. The skin introduction amount S is decreased by displacing the skin.

  The reason why the outer blade block 30 is displaced in the separation direction based on the vibration force FV is considered as follows. The skin 200 has a greater amount of dent deformation as the force input from the outside increases. As the amount of dent deformation increases, the skin 200 is less likely to be deformed based on the pressing force FF. When the pressing force FF is greater than or equal to the reference pressing force FFX, the skin 200 forms a state where there is no deformation allowance or a state where the deformation allowance is sufficiently small.

  For this reason, the skin 200 does not cause a dent deformation based on the vibration force FV when the vibration force FV is received from the outer blade block 30 when the pressing force FF is greater than the reference pressing force FFX, or The dent deformation amount based on the vibration force FV forms a minute state. For this reason, the outer blade block 30 receives a shocking and large reaction force from the skin 200 as the vibration force FV is transmitted to the skin 200. For this reason, it is considered that the outer blade block 30 is intermittently displaced in the separation direction based on the vibration force FV.

  Based on the above matters, the vibration generating unit 100 has a structure in which the vibration of the outer blade block 30 increases as the pressing force FF increases. For this reason, the vibration generating unit 100 easily displaces the outer blade block 30 in the separating direction with respect to the skin 200 as the pressing force FF increases. For this reason, the skin introduction amount S tends to decrease. The vibration of the outer blade block 30 increases as the pressing force FF increases for the following reason.

  The skin reaction force FR increases as the pressing force FF increases. The outer cutter position C changes to the retracting direction DD side as the skin reaction force FR increases. The reference part position PX approaches the maximum suction position PXD as the skin reaction force FR increases. The internal gap distance LA becomes shorter as the reference part position PX approaches the maximum suction position PXD. The suction force of the input side iron core 113 increases as the internal gap distance LA decreases. The amount of compressive deformation V of the load input component 126 increases as the suction force of the input side iron core 113 increases. The vibration force FV of the vibration generating unit 100 increases as the compression deformation amount V increases. For this reason, the vibration force FV of the vibration generating unit 100 increases as the skin reaction force FR increases. For this reason, the vibration of the outer blade block 30 increases as the skin reaction force FR increases. For this reason, the vibration of the outer blade block 30 increases as the pressing force FF increases.

The electric razor 1 has the following effects.
(1) The electric razor 1 has a vibration generating unit 100. The vibration generating unit 100 transmits the vibration force FV to the outer blade block 30 via the vibration input unit 130. For this reason, the outer blade block 30 is displaced in the separation direction intermittently with respect to the skin 200 when the pressing force FF is large. For this reason, damage to the skin 200 is less likely to occur. That is, the electric razor 1 contributes to making the skin 200 less likely to be damaged.

  (2) The vibration generating unit 100 displaces the outer blade block 30 in the separating direction with respect to the skin 200. For this reason, the frictional force between the outer blade block 30 and the skin 200 is reduced. For this reason, the outer blade block 30 is less opposed to the moving direction for hair removal. For this reason, the user can make small the force which moves the electric razor 1 with respect to the skin 200 for hair removal.

  (3) The vibration generating unit 100 starts to transmit vibration to the vibration input unit 130 when the pressing force FF changes from a magnitude less than the reference pressing force FFX to a magnitude greater than or equal to the reference pressing force FFX. For this reason, the outer blade block 30 can notify the user that the skin introduction amount S is likely to exceed the appropriate range by vibration.

  (4) The skin introduction amount S increases as the pressing force FF increases, assuming that there is no displacement in the separating direction of the outer blade block 30 based on the vibration force FV. For this reason, the large pressing force FF potentially has a risk of excessively increasing the skin introduction amount S. On the other hand, the vibration generating unit 100 increases the vibration force FV as the pressing force FF increases. For this reason, the outer blade block 30 is easily separated from the skin 200 as the pressing force FF increases. For this reason, the possibility that the skin introduction amount S is excessively increased due to the large pressing force FF is reduced.

  (5) The electric razor 1 has an advantage over the comparative electric razor. The comparative electric razor is different from the electric razor 1 in the following points, and indicates a virtual electric razor having the same configuration as the electric razor 1 in other points.

  In the comparative electric razor, the vibration component and the vibration input portion are in contact with each other in a state where the skin reaction force FR is not acting. In the comparative electric razor, in the driving direction D, the output side iron core is disposed on the side opposite to the outer blade block with respect to the input side iron core.

  For this reason, the output side iron core of the comparative electric razor is separated from the input side iron core as the outer blade block changes to the retracting direction DD side. For this reason, the internal clearance distance LA of the comparative electric razor becomes longer as the skin reaction force FR increases. For this reason, the suction force of the input side iron core of the comparative electric razor decreases as the skin reaction force FR increases.

  For this reason, the vibration force FV of the comparative electric razor decreases as the skin reaction force FR increases. For this reason, the vibration of the outer cutter block of the comparative electric razor decreases as the pressing force FF increases. That is, the vibration generating portion of the comparative electric razor approaches a state where it does not substantially function as the pressing force FF increases.

  On the other hand, in the vibration generating unit 100 of the electric razor 1, the internal gap distance LA becomes shorter as the pressing force FF becomes larger. For this reason, the vibration generating unit 100 has a higher ability to vibrate the outer blade block 30 as the pressing force FF increases. For this reason, the vibration generating unit 100 contributes to enhancing the effect of making the skin 200 less likely to be damaged.

(Second Embodiment)
FIG. 4 shows one form of the electric shaver 1 of the second embodiment.
The electric shaver 1 of 2nd Embodiment has a some component. The plurality of components of the second embodiment have the same or similar structure and function as the components of the electric shaver 1 of the first embodiment. Description of the electric shaver 1 of 2nd Embodiment abbreviate | omits a part or all of description of the component of 2nd Embodiment which has the same or similar structure and function as the component of 1st Embodiment. The description of the electric shaver 1 of the second embodiment is the configuration of the first embodiment with respect to at least a part of the components of the second embodiment having the same or similar structure and function as the components of the first embodiment. The same reference numerals are used for the elements.

  The electric shaver 1 of the second embodiment is mainly different from the electric shaver 1 of the first embodiment in the following points. The electric razor 1 of the first embodiment does not have a mechanism for adjusting the external gap distance LB in a state where the outer blade block 30 is not pressed against the skin 200. The electric razor 1 according to the second embodiment includes a gap adjustment unit 140 for adjusting the external gap distance LB in a state where the outer blade block 30 is not pressed against the skin 200.

  The gap adjusting unit 140 is configured by a set of a plurality of components. The plurality of components of the gap adjustment unit 140 include at least a position restriction mechanism 141, an operation component 142, and two springs 143.

  The two springs 143 are disposed between the main body 10 and the outer blade case 31. The two springs 143 are disposed at symmetrical positions with respect to the center line of the electric razor 1 in the width direction. The spring 143 is compressed and deformed when the outer blade block 30 is displaced in the retracting direction DD.

  The operation component 142 is formed on the case of the main body 10. The operation component 142 is displaced with respect to the main body 10 when an external force is input. The operation component 142 is connected to the position restriction mechanism 141 via a link mechanism (not shown). The operation component 142 operates the position restriction mechanism 141 in accordance with a change in the operation position of the operation component 142. The operation position of the operation component 142 changes continuously or stepwise in the range from the maximum separation setting position to the maximum approach setting position. The operation position of the operation component 142 has a reference setting position between the maximum separation setting position and the maximum approach setting position.

  The position regulating mechanism 141 changes the limit position (hereinafter, “separation limit position CX”) at which the outer blade block 30 can be displaced in the pressing direction DU with respect to the main body 10 to change the operation position of the operation component 142. Change accordingly. The position restricting mechanism 141 does not restrict the displacement of the outer blade block 30 in the retracting direction DD. The outer blade block 30 takes the separation limit position CX in a state where the skin reaction force FR is not acting.

  The position regulating mechanism 141 sets the separation limit position CX to the maximum separation position CU when the operation position of the operation component 142 takes the maximum separation setting position. The position restriction mechanism 141 sets the separation limit position CX to the component contact position CM when the operation position of the operation component 142 takes the reference setting position. The position regulating mechanism 141 sets the separation limit position CX to the maximum approach position CD when the operation position of the operation component 142 takes the maximum approach setting position.

  The external gap distance LB in the non-energized state becomes the longest in the change range based on the operation position of the operation component 142 when the separation limit position CX takes the maximum separation position CU. When the separation limit position CX is included in the range between the maximum separation position CU and the component contact position CM, the external gap distance LB in the non-energized state becomes shorter as the separation limit position CX approaches the component contact position CM. The external gap distance LB in the non-energized state takes “0” when the separation limit position CX takes the component contact position CM. The external gap distance LB in the non-energized state is “0” when the separation limit position CX is included in the range between the component contact position CM and the maximum approach position CD. The external gap distance LB in the non-energized state takes “0” when the separation limit position CX takes the maximum approach position CD.

  When the separation limit position CX takes the maximum separation position CU, the vibration generation unit 100 transmits vibration to the vibration input unit 130 when the pressing force FF changes from less than the reference pressing force FFX to more than the reference pressing force FFX. Start to do. That is, the vibration generating unit 100 forms the same operation as the vibration generating unit 100 of the first embodiment.

  When the separation limit position CX takes a position between the maximum separation position CU and the component contact position CM, the vibration generating unit 100 changes the pressing force FF from less than the predetermined pressing force FFW to a magnitude equal to or larger than the predetermined pressing force FFW. When the vibration input unit 130 begins to transmit vibration. The predetermined pressing force FFW is larger than “0” and smaller than the reference pressing force FFX. The predetermined pressing force FFW decreases as the separation limit position CX approaches the component contact position CM.

  When the separation limit position CX is included in the range from the component contact position CM to the maximum approach position CD, the vibration generating unit 100 applies the vibration input unit 130 to the vibration input unit 130 when the pressing force FF changes to a magnitude larger than “0”. Begins transmitting vibration.

  The electric razor 1 of the second embodiment has the effect (1) produced by the electric razor 1 of the first embodiment, that is, the effect that it contributes to making the skin 200 difficult to be damaged, and (2) to (5) ). The electric shaver 1 of the second embodiment further has the following effects.

  (6) The electric razor 1 has a gap adjusting unit 140. The gap adjustment unit 140 adjusts the size of the external gap distance LB according to the operation position of the operation component 142. For this reason, the user can adjust the magnitude of the pressing force FF when the vibration generating unit 100 starts to transmit vibration to the outer blade block 30.

(Third embodiment)
FIG. 1 shows an embodiment of an electric shaver 1 according to the third embodiment.
The electric shaver 1 of 3rd Embodiment has a some component. The plurality of components of the third embodiment have the same or similar structures and functions as the components of the electric shaver 1 of the third embodiment. Description of the electric shaver 1 of 3rd Embodiment abbreviate | omits part or all of description of the component of 3rd Embodiment which has the same or similar structure and function as the component of 1st Embodiment. The description of the electric shaver 1 of the third embodiment is the same as the configuration of the third embodiment with respect to at least a part of the components of the third embodiment having the same or similar structure and function as the components of the first embodiment. The same reference numerals are used for the elements.

  The electric razor 1 of the third embodiment is mainly different from the electric razor 1 of the first embodiment in the following points. The electric shaver 1 according to the first embodiment drives the vibration generating unit 100 when the power switch 60 is turned on. The electric razor 1 of 3rd Embodiment detects the skin reaction force FR, and drives the vibration generation part 100 based on a detection result.

The electric shaver 1 of 3rd Embodiment has the following detailed structures.
The electric razor 1 has a load detector (not shown). The load detection unit outputs a detection signal that changes according to the displacement of the outer blade block 30, the pressure of the outer blade block 30, or the strain of the outer blade block 30. The control unit 70 compares the detection signal of the load detection unit with the reference signal, and controls the vibration generation unit 100 based on the comparison result. The control unit 70 starts energizing the coil 112 when the relationship between the detection signal of the load detection unit and the reference signal indicates that the skin reaction force FR is greater than or equal to the reference skin reaction force FRX. The control unit 70 causes a constant current to flow through the coil 112. The control unit 70 stops energization of the coil 112 when the relationship between the detection signal of the load detection unit and the reference signal indicates that the skin reaction force FR is less than the reference skin reaction force FRX.

  The electric razor 1 of the third embodiment has the effect (1) produced by the electric razor 1 of the first embodiment, that is, the effect that it contributes to making the skin 200 difficult to be damaged, and (2) to ( The effect 5) is produced.

(Other embodiments)
The electric razor includes other embodiments different from the first to third embodiments. Other embodiment has the form of the modification of 1st Embodiment-3rd Embodiment shown below as an example. Note that the following modifications can be combined with each other within a technically consistent range.

  The vibration generating unit 100 of the first embodiment fixes the input side iron core 113 to the case 101. However, the configuration of the vibration generating unit 100 is not limited to the content exemplified in the first embodiment. The vibration generating unit 100 according to the modified example has a structure in which the input side iron core 113 can be displaced with respect to the case 101. Note that the same deformation is also established in the vibration generating unit 100 of the second embodiment and the third embodiment.

  -The vibration generation part 100 of 1st Embodiment has the vibration component 121 formed of the resin material. However, the material of the vibration component 121 is not limited to the content exemplified in the first embodiment. As an example, the vibration generating unit 100 according to the modification includes a vibration component 121 formed of a metal material. Note that the same deformation is also established in the vibration generating unit 100 of the second embodiment and the third embodiment.

  The vibration component 121 according to the first embodiment has a structure in which the coupling portion 122 and the contact portion 123 are integrally formed of the same material. However, the structure of the vibration component 121 is not limited to the content exemplified in the first embodiment. The deformable vibration component 121 has a structure in which a coupling portion 122 and a contact portion 123 formed as individual components are coupled to each other. In the vibration component 121, the material of the coupling portion 122 and the contact portion 123 can be made different from each other. Note that the same deformation is also established in the vibration component 121 of the second embodiment and the third embodiment.

  The vibration input unit 130 of the first embodiment is integrally formed of the same material as the outer blade case 31. However, the configuration of the vibration input unit 130 is not limited to the content exemplified in the first embodiment. The vibration input unit 130 of the modified example is formed as a part different from the outer cutter case 31 and is coupled to the outer cutter case 31. Note that the same deformation is also established in the vibration input unit 130 of the second embodiment and the third embodiment.

  -The electric razor 1 of 1st Embodiment forms the external clearance 103 between the vibration component 121 and the vibration input part 130 in the state in which the skin reaction force FR is not acting. The vibration input unit 130 contacts the vibration component 121 when the skin reaction force FR is greater than or equal to the reference skin reaction force FRX. However, the relationship between the vibration component 121 and the vibration input unit 130 is not limited to the content exemplified in the first embodiment. The electric shaver 1 according to the modification has a structure in which the vibration component 121 and the vibration input unit 130 are in contact with each other in a state where the skin reaction force FR is not acting. Note that the same modification is established in the electric shaver 1 of the third embodiment.

  The electric shaver 1 according to the first embodiment transmits the vibration force FV of the vibration generating unit 100 to the outer blade block 30 by the contact between the vibration input unit 130 and the vibration component 121. However, the configuration for transmitting the vibration force FV to the outer blade block 30 is not limited to the configuration illustrated in the first embodiment. In the electric shaver 1 according to the modification, the vibration input unit 130 is omitted. The vibration generating unit 100 transmits the vibration force FV to the outer blade block 30 by bringing the vibration component 121 into contact with the outer blade case 31.

  -The electric shaver 1 of 1st Embodiment has the outer blade block 30 illustrated by FIG. However, the configuration of the outer cutter block 30 is not limited to the content exemplified in the first embodiment. The modified electric razor 1 has a modified outer blade block in place of the outer blade block 30. The deformed outer blade block has a function according to the function of the outer blade block 30 and has a configuration different from that of the outer blade block 30. Note that the same modification is established in the electric shaver 1 of the second embodiment and the third embodiment.

  -The electric shaver 1 of 1st Embodiment has the inner blade block 40 illustrated by FIG. However, the configuration of the inner blade block 40 is not limited to the content exemplified in the first embodiment. The modified electric razor 1 has a modified inner blade block instead of the inner blade block 40. The modified inner blade block has a function according to the function of the inner blade block 40 and has a configuration different from that of the inner blade block 40. Note that the same modification is established in the electric shaver 1 of the second embodiment and the third embodiment.

  -The electric shaver 1 of 1st Embodiment has the magnetic force generation part 110 illustrated by FIG. However, the configuration of the magnetic force generation unit 110 is not limited to the content exemplified in the first embodiment. The electric shaver 1 according to the modified example has a deformed magnetic force generator instead of the magnetic force generator 110. The deformed magnetic force generation unit has a function according to the function of the magnetic force generation unit 110 and has a configuration different from that of the magnetic force generation unit 110. Note that the same modification is established in the electric shaver 1 of the second embodiment and the third embodiment.

  -The electric shaver 1 of 1st Embodiment has the output movable part 120 illustrated by FIG. However, the configuration of the output movable unit 120 is not limited to the content exemplified in the first embodiment. The electric shaver 1 according to the modified example has a modified output movable portion instead of the output movable portion 120. The deformable output movable unit has a function according to the function of the output movable unit 120 and has a configuration different from that of the output movable unit 120. Note that the same modification is established in the electric shaver 1 of the second embodiment and the third embodiment.

  -The electric shaver 1 of 1st Embodiment has the vibration input part 130 illustrated by FIG. However, the configuration of the vibration input unit 130 is not limited to the content exemplified in the first embodiment. The electric shaver 1 according to the modified example has a modified vibration input unit instead of the vibration input unit 130. The deformation vibration input unit has a function according to the function of the vibration input unit 130 and has a configuration different from that of the vibration input unit 130. Note that the same modification is established in the electric shaver 1 of the second embodiment and the third embodiment.

  -The electric shaver 1 of 2nd Embodiment has the clearance gap adjustment part 140 illustrated by FIG. However, the configuration of the gap adjustment unit 140 is not limited to the content exemplified in the second embodiment. The electric shaver 1 according to the modified example has a modified gap adjusting unit instead of the gap adjusting unit 140. The deformation gap adjustment unit has a function according to the function of the gap adjustment unit 140 and has a configuration different from that of the gap adjustment unit 140.

  The control unit 70 of the third embodiment has a constant current when the skin reaction force FR is greater than the reference skin reaction force FRX, which is suggested by the relationship between the detection signal of the load detection unit and the reference signal. Is passed through the coil 112. However, the control content of the control unit 70 is not limited to the content exemplified in the third embodiment. The control unit 70 according to the modification changes the magnitude of the current flowing through the coil 112 according to the skin reaction force FR. For example, the control unit 70 has the following configuration.

  When it is suggested by the relationship between the detection signal of the load detection unit and the reference signal that the skin reaction force FR is greater than or equal to the reference skin reaction force FRX, the control unit 70 determines whether the skin reaction force FR is higher than the reference reaction force FRX. Compare with force judgment signal. The control unit 70 determines the relationship between the high reaction force larger than the reference skin reaction force FRX and the skin reaction force FR based on the comparison result between the detection signal of the load detection unit and the high reaction force determination signal.

  When it is suggested by the relationship between the detection signal of the load detection unit and the high reaction force determination signal that the skin reaction force FR has a magnitude greater than or equal to the high reaction force, the control unit 70 applies a high load current to the coil 112. Shed. When it is suggested by the relationship between the detection signal of the load detection unit and the high reaction force determination signal that the skin reaction force FR is less than the high reaction force, the control unit 70 is smaller than the current at high load. A load current is passed through the coil 112. For this reason, the vibration force FV of the vibration generating unit 100 is greater when the skin reaction force FR is greater than or equal to the high reaction force than when the skin reaction force FR is less than the high reaction force. For this reason, when the skin reaction force FR takes a magnitude greater than or equal to the high reaction force, the outer blade block 30 is easily displaced from the skin 200 in the separation direction.

(Additional note regarding means for solving the problem)
Means for solving the problems include the following [Appendix 1] to [Appendix 4]. The items included in [Appendix 1] to [Appendix 4] correspond to the items disclosed in the embodiment.

[Additional Item 1]
The electric razor according to supplementary item 1 has the following matters in the electric razor according to any one of claims 1 to 3. The vibration generating unit increases the vibration force input to the hair removal unit as the load on the hair removal unit increases.

[Appendix 2]
The electric razor according to appendix 2 has the following matters in the electric razor according to any one of claims 1 to 3 or appendix 1. The said vibration generation part vibrates the said hair removal part in the height direction of the said hair removal part.

[Additional Item 3]
The electric razor according to the supplementary item 3 has the following matters in the electric razor according to the second or third aspect or the supplementary item 1 or 2. The electric razor has a control unit and a load detection unit. The load detection unit outputs a detection signal that changes according to a load input to the hair removal unit. The control unit increases the current input to the magnetic force generation unit when the detection signal indicates that the load on the hair removal unit is increasing.

[Additional Item 4]
The electric razor described in appendix 4 has the following matters. The electric razor has a main body part, a hair removal part, and a vibration generating part. The body portion supports the hair removal portion. The vibration generating unit includes a magnetic force generating unit and an output movable unit. The magnetic force generation unit includes a coil and an input side iron core, forms a magnetic field by the coil, and causes the attraction force of the input side iron core to act on the output movable unit. The output movable part has a vibration component and an output side iron core. The output side iron core is coupled to the vibration component and moves relative to the magnetic force generation unit based on the attractive force of the input side iron core. The vibration component transmits vibration to the hair removal unit based on the movement of the output side iron core. The electric razor has a gap between the hair removal part and the vibration component. The gap decreases as the load on the hair removal unit increases. The vibration component does not transmit vibration to the hair removal part when the gap exists, and transmits vibration to the hair removal part when the gap does not exist.

  1: Electric razor
  10: Main body
  20: Hair removal part
  30: Outer blade block
  31: Outer blade case
  32: Outer blade
  33: Space inside the outer blade
  40: Inner blade block
  41: Fitting parts
  42: Inner blade
  50: Inner blade drive part
  60: Power switch
  70: Control unit
  80: Power supply unit
  100: Vibration generator
  101: Case
  102: Internal clearance
  103: External gap
  110: Magnetic force generator
  111: Bobbin
  112: Coil
  113: Input side iron core
  120: Output movable part
  121: Vibration component
  122: coupling part
  123: Contact portion
  124: Contact portion facing surface
  125: Output side iron core
  126: Load input parts
  130: Vibration input part
  131: Input space
  132: Input unit facing surface
  140: Gap adjustment part
  141: Position restriction mechanism
  142: Operation parts
  143: Spring
  200: Skin
  LA: Internal clearance distance
  LB: External clearance distance

Claims (5)

An electric razor,
The electric razor has a main body part, a hair removal part, and a vibration generating part,
The body part supports the hair removal part,
The vibration generating unit has a magnetic force generating unit and an output movable unit,
The magnetic force generation part has a coil and an input side iron core, forms a magnetic field by the coil, and causes the attraction force of the input side iron core to act on the output movable part,
The output movable part has a vibration part and an output side iron core,
The output side iron core is coupled to the vibration component, and moves with respect to the magnetic force generation unit based on the attraction force of the input side iron core,
The vibration component transmits vibration to the hair removal unit based on the movement of the output side iron core, and causes the output side iron core to approach the input side iron core as the load on the hair removal unit increases .
The electric razor further includes a gap between the hair removal unit and the vibration component,
The gap decreases as the load on the hair removal portion increases,
An electric razor that transmits vibration to the hair removal portion when the vibration component does not transmit vibration to the hair removal portion when the clearance is present, and transmits vibration to the hair removal portion when the clearance is not present . An electric razor,
The electric razor has a main body part, a hair removal part, and a vibration generating part,
The body part supports the hair removal part,
The vibration generating unit has a magnetic force generating unit and an output movable unit,
The magnetic force generation part has a coil and an input side iron core, forms a magnetic field by the coil, and causes the attraction force of the input side iron core to act on the output movable part,
The output movable part has a vibration part and an output side iron core,
The output side iron core is coupled to the vibration component, and moves with respect to the magnetic force generation unit based on the attraction force of the input side iron core,
The vibration component transmits vibration to the hair removal unit based on the movement of the output side iron core, and causes the output side iron core to approach the input side iron core as the load on the hair removal unit increases .
The electric razor further includes a position adjusting unit,
The position adjusting unit is an electric razor that changes an initial position of the hair removal unit with respect to the vibration component .   A hair removal part for shaving the skin,
  A body part for supporting the hair removal part;
  A vibration generating unit that vibrates the hair removal unit in a driving direction that is a direction approaching the skin and a direction separating from the skin with respect to the main body unit;
  The vibration generating unit includes an output movable unit that transmits a vibration force, which is a force that vibrates the hair removal unit in the driving direction, to the hair removal unit, and magnetic attraction so that the output movable unit vibrates in the driving direction. A magnetic force generating part that generates force, and is configured such that a magnetic attractive force acting on the output movable part increases as a pressing force that is a force pressing the hair removal part against the skin increases. When the pressing force is larger than the reference pressing force, the vibration force capable of intermittently separating the hair removal portion from the skin is transmitted to the hair removal portion.
  Electric razor.   The magnetic force generation unit includes a coil to which an electric current is supplied, and an input side iron core that generates a magnetic attractive force by a magnetic flux generated from the coil,
  The output movable part can be vibrated in the driving direction by the vibration component that transmits the vibration force to the hair removal part by being displaced in the driving direction with respect to the hair removal part, and the magnetic attraction force. And the output side iron core couple | bonded with the said vibration component is provided so that the said input side iron core may be approached as the said pressing force becomes large
  The electric razor according to claim 3.   The vibration generating unit has a skin introduction amount that is the amount of skin introduced into the hair removal unit close to an upper limit of an appropriate range, or the skin introduction amount because the pressing force is larger than the reference pressing force. Is configured to be able to generate a vibration force in the output movable part that can cause the hair removal part to be intermittently separated from the skin when there is a high possibility that it will be larger than the appropriate range. Have
  The electric shaver according to claim 3 or 4.