JP7449976B2 - skin treatment device - Google Patents

Description

The present disclosure relates to a skin treatment device.

Skin treatment devices in the form of electric shavers are known that have an iontophoresis device in their head.

Special Publication No. 2010-510821

In the conventional technology, it is not possible to realize a connection structure that can supply electrical energy etc. from the main body to the head while providing a detachable structure between the head and the main body, so there remains room for improvement in convenience and the like.

Therefore, an object of the present disclosure is to realize a connection structure that allows electrical energy etc. to be supplied from the main body to the head while providing a structure in which the head and the main body are detachable.

According to one aspect of the present disclosure, a main body;
a head part that can contact a user's target area;
a mechanical connection structure that mechanically connects the main body portion and the head portion in a detachable manner;
A skin treatment device is provided that includes an electrical connection structure that electrically connects the main body portion and the head portion.

According to the present disclosure, it is possible to realize a connection structure in which electrical energy etc. can be supplied from the main body to the head while providing a detachable structure between the head and the main body.

1 is a front view schematically showing an example of an electric shaver according to a first embodiment; FIG. 2 is a schematic configuration diagram illustrating a preferred example of a heating means according to Example 1. FIG. FIG. 3 is a schematic diagram showing an example of an electrical system in the main body according to the first embodiment. FIG. 3 is an explanatory diagram of the principle of the warming effect according to Example 1. 3 is a schematic flowchart illustrating an example of processing executed by a control unit according to the first embodiment. 7 is a schematic flowchart illustrating another example of processing executed by the control unit according to the first embodiment. 2 is an exploded perspective view of the entire head portion according to Example 1. FIG. FIG. 3 is an exploded perspective view of a portion of the head portion according to the first embodiment. FIG. 3 is a perspective view showing the main holder unit alone according to the first embodiment. 9 is an explanatory diagram (part 1) of the heating effect of the electric shaver shown in FIGS. 6 to 8. FIG. 9 is an explanatory diagram (part 2) of the heating effect of the electric shaver shown in FIGS. 6 to 8. FIG. 9 is an explanatory diagram (part 3) of the heating effect of the electric shaver shown in FIGS. 6 to 8. FIG. 1 is a plan view schematically showing a film heater according to Example 1. FIG. 3 is a diagram showing an example of a wiring structure in a head portion according to Example 1. FIG. 3 is a diagram showing an example of a wiring structure in a head portion according to Example 1. FIG. FIG. 3 is a perspective view showing a held portion of the base according to the first embodiment. FIG. 2 is a perspective view of a head portion of an electric shaver according to a second embodiment. FIG. 3 is another perspective view of the head portion of the electric shaver according to the second embodiment. FIG. 3 is a perspective view of the base of the electric shaver according to the second embodiment. FIG. 7 is an explanatory diagram of the wiring structure of this example according to Example 2; FIG. 7 is a perspective view from below of the frame according to the second embodiment. FIG. 2 is a perspective view of an electrical connection structure of an electric shaver according to a second embodiment. FIG. 2 is an enlarged perspective view of a characteristic part of a shaver holder according to a second embodiment. FIG. 3 is a perspective view showing the arrangement of a light irradiation section and the like of an electric shaver according to a second embodiment. FIG. 7 is an explanatory diagram of a method for removing a cutter unit of an electric shaver according to a second embodiment. FIG. 2 is a perspective view of a frame portion of an electric shaver according to a second embodiment. FIG. 7 is a perspective view showing the connection portion between the head portion and the main body portion according to the second embodiment from below. FIG. 7 is a perspective view of a connecting portion of a main body according to a second embodiment. FIG. 7 is another perspective view of the connection portion of the main body according to the second embodiment. FIG. 7 is a perspective view of a connecting portion of a head portion according to a second embodiment. FIG. 7 is a perspective view showing the second connecting means according to the second embodiment.

Hereinafter, each embodiment will be described in detail with reference to the accompanying drawings.

[Example 1]
FIG. 1 is a front view schematically showing an example of an electric shaver 1, which is one form of a skin treatment device according to the present embodiment. Hereinafter, the user refers to the user of the electric shaver 1, and the user's target area is any area that can be contacted by the electric shaver 1, and typically there is hair to be shaved. Corresponds to the part. Furthermore, hereinafter, hair removal efficiency refers to hair removal efficiency related to shaving with the electric shaver 1.

The electric shaver 1 includes a main body part 10 and a head part 20, as shown in FIG.

The main body 10 houses an electric motor 11 and a battery 12. Electric motor 11 is a drive source that drives electric shaver 1 and operates based on electric power from battery 12 . The electric motor 11 may be realized by a magnetic linear motor or the like. The battery 12 is an externally chargeable battery and functions as an internal power source. Note that in a modification, the electric motor 11 may be operable by an external power source instead of or in addition to the internal battery 12.

Note that the main body 10 may be provided with a user interface 15 that allows the user to perform various inputs to the electric shaver 1. Note that the user interface 15 may include mechanical buttons, touch switches, and the like. Further, the main body portion 10 may be provided with a trimmer (not shown).

The head section 20 is configured to be able to contact a target region of the user. The head section 20 may be detachably attached to the main body section 10. When the head section 20 is removable from the main body section 10, cleaning of the head section 20, etc. becomes easy.

The head portion 20 may be supported movably with respect to the main body portion 10. When the head section 20 is movable with respect to the main body section 10, it becomes easy to bring the head section 20 into close contact with the target region of the user, and hair removal efficiency can be effectively increased. Note that the head section 20 may be able to be displaced with various degrees of freedom with respect to the main body section 10. For example, the head portion 20 may be supported with respect to the main body portion 10 via the shaft member 13, and in this case, the head portion 20 may be supported within a predetermined angular range around any direction perpendicular to the axial direction of the shaft member 13. It may be tiltable or rotatable. Note that a ball joint may be used for the connection structure between the head section 20 and the main body section 10.

The head section 20 is provided with a cutter unit 21 and a heating means 22.

The cutter unit 21 is provided on the head section 20 so as to be in contact with the target region while the head section 20 is in contact with the target region of the user. That is, the cutter unit 21 forms a portion of the head portion 20 that contacts the user's target site. In addition, in a normal usage mode for shaving, the cutter unit 21 may be the only part of the head section 20 that comes into contact with the user's target region.

The cutter unit 21 is an electric type driven by the electric motor 11. The cutter unit 21 has a blade capable of cutting hair during operation (driving). Therefore, when the cutter unit 21 operates with the head portion 20 in contact with the user's target region, the hair that may exist in the target region is cut by the cutter unit 21 (that is, shaving is achieved).

Note that the cutter unit 21 may be of an electric type and may move in any manner. For example, the cutter unit 21 may be of a rotary type, a vibrating type (linear vibration), or a combination thereof.

The heating means 22 heats the target region of the user that the cutter unit 21 contacts. By heating the target region of the user that the cutter unit 21 comes into contact with, the heating means 22 can assist in bringing the state of the user's target region (especially the state of the hair) into a state suitable for shaving. For example, the heating means 22 achieves the same effect as heating the target area with a steamed towel. Hereinafter, the effect of the heating means 22 will also be referred to as a "warming effect."

The heating means 22 operates based on power from the battery 12. That is, the power supply voltage for the heating means 22 is generated based on the battery 12. In addition, in a modification, the heating means 22 may be operable by an external power source instead of or in addition to the internal battery 12.

The heating means 22 may have any configuration as long as it can heat the target region, and may include, for example, a heating element (for example, a heating wire) that generates heat by passing a direct current. In this case, the heating means 22 may be in the form of a film heater, a nichrome wire heater, or the like.

Alternatively, the heating means 22 may be a means for applying high frequency to the target region using a pair of electrodes 221 as described below. Further, the heating means 22 may be realized by means for irradiating the target region with radio waves such as microwaves (very high frequency waves).

The heating means 22 preferably covers a relatively wide area of the head 20 such that it can heat a relatively wide area of the target area while the head 20 is in contact with the target area of the user. It is set up over a period of time. In this case, the heating means 22 may be arranged so as to occupy most of the portion of the head section 20 that contacts the user's target region, excluding the cutter unit 21. For example, the heating means 22 may be provided so as to surround the cutter unit 21.

Preferably, the heating means 22 is provided in the head portion 20 in a manner that does not impede the adhesion between the cutter unit 21 and the target region. For example, the heating means 22 may be slightly offset toward the main body 10 with respect to the cutter unit 21 (see Δ1 in FIG. 1). Thereby, it is possible to reduce the possibility that the adhesion between the cutter unit 21 and the target region will deteriorate due to the heating means 22.

FIG. 2 is a schematic diagram illustrating a preferred example of the heating means 22. FIG. 2A is a schematic diagram showing an example of an electrical system in the main body section 10. FIG. 2 also shows the electrical connection between the heating means 22 and the control section 300. Note that the wiring is schematically shown as a solid line. FIG. 3 is an explanatory diagram of the principle of the heating effect, and is a cross-sectional view schematically showing an electric field (high-frequency current) generated in the target region 900 when a high-frequency voltage is applied. In FIG. 3, three hairs 901 at the target site 900 are schematically shown along with a pair of electrodes 221. Further, in FIG. 3, the state of an electric field generated in the target region 900 by application of a high-frequency voltage is schematically shown by a dotted line E.

The heating means 22 preferably includes a pair of electrodes 221, as shown in FIG. 2, through which a high frequency voltage is applied to the target region 900 of the user. In this case, a high frequency electric field is formed in the target region 900 via the pair of electrodes 221, and heating by dielectric heating and/or Joule heating is realized in the target region 900.

When such a heating means 22 is used, the electric field related to high frequency can be applied to a relatively deep part of the target region 900 (the side closer to the pores than the surface). Therefore, the pores are effectively opened, and heat is also transmitted to the hair roots, making the hair 901 soft. By performing heating based on the application of high-frequency voltage to the counter electrode 221 in this manner, the condition of the user's target region 900 (especially hair condition) to a condition suitable for shaving. That is, the heating effect can be efficiently enhanced.

Note that when the heating means 22 includes a pair of electrodes 221, one of the pair of electrodes 221 may be realized by a component forming the cutter unit 21 (the outer cutter portion 2131 as described later).

In the example shown in FIG. 2, the pair of electrodes 221 on the head section 20 side connect It is electrically connected to the side control unit 300 (and the battery 12, not shown in FIG. 2). In this case, since there is no need to dispose the control unit 300 or a battery (for example, a battery different from the battery 12) on the head unit 20 side, cleaning of the head unit 20, etc. is possible. Note that the electrical contacts 19 and 29 may be provided in pairs corresponding to the paired electrodes 221.

The electrical contacts 19 and 29 may be arranged, for example, at a connecting portion between the head section 20 and the main body section 10. For example, the electrical contact 19 on the main body part 10 side is provided at or near a holding part that removably holds the head part 20 in the main body part 10, and the electrical contact 19 on the main body part 10 side is provided at or near a held part of the head part 20 on the head part 20 side. electrical contacts 29 may be provided. In this case, the electrical contacts 19 and 29 are electrically connected when the head section 20 is connected (attached) to the main body section 10, and when the head section 20 is detached from the main body section 10, the electrical contacts 19 and 29 are connected electrically. It can be electrically disconnected.

Furthermore, the electrical contacts 19 and 29 may be arranged at a location other than the connecting portion between the head portion 20 and the main body portion 10 (at a position away from the above-mentioned holding portion). For example, the electrical contacts 19 and 29 may be realized by magnetic contacts that come into contact when the head section 20 is connected (attached) to the main body section 10 . Alternatively, the energization between the electrical contacts 19 and 29 may be realized by non-contact energization (non-contact energization). Alternatively, electrical contact 19 may be omitted and electrical contact 29 may be connectable to an external power source. In this case, the electrical connection between the electrical contact 29 and the external power source may be realized by a USB (Universal Serial Bus) connection or the like.

In this embodiment, the control unit 300 may be electrically connected to the battery 12 in parallel with the electric motor 11, as shown in FIG. 2A. In this way, the heating means 22 can be operated using the power of the battery 12, which is a power source for the electric motor 11. Note that in FIG. 2A, the switch SW is a shaving switch (one element of the user interface 15) that turns on the electric motor 11.

FIG. 4 is a schematic flowchart illustrating an example of processing executed by the control unit 300.

In the example shown in FIG. 4, the heating means 22 always operates in conjunction with the operation of the cutter unit 21. Specifically, when a shaving switch (not shown) is turned on (YES in step S400), power supply to the electric motor 11 and the control unit 300 is started. In this case, when the cutter unit 21 is rotated by the operation of the electric motor 11, the control section 300 starts applying a high frequency voltage to the pair of electrodes 221 related to the heating means 22 (step S402). In this case, the user can operate the heating means 22 when shaving with the cutter unit 21 without performing any special operation on the heating means 22, resulting in good operability. Note that when the shaving switch (not shown) is turned off (YES in step S404), the electric motor 11 and the heating means 22 are stopped by cutting off the power supply from the battery 12. That is, the cutter unit 21 is stopped by stopping the electric motor 11, and the application of the high frequency voltage to the pair of electrodes 221 related to the heating means 22 is stopped.

In the example shown in FIG. 4, the operation of the heating means 22 starts at substantially the same timing as the start of the operation of the electric motor 11, but the start timing of the operation of the electric motor 11 and the operation of the heating means 22 are different. A significant difference may be set between the start timing and the start timing. For example, the start timing of the operation of the heating means 22 may be significantly earlier than the start timing of the operation of the electric motor 11 so that shaving is achieved at the target area after being heated.

FIG. 5 is a schematic flowchart showing another example of processing executed by the control unit 300.

In the example shown in FIG. 5, the heating means 22 is operable independently of the operation of the cutter unit 21. Specifically, in step S500, the control unit 300 determines whether the conditions for starting the operation of the heating means 22 are satisfied. The conditions for starting the operation of the heating means 22 are arbitrary and can be varied. For example, the condition for starting the operation of the heating means 22 may be satisfied by turning on a heating switch (not shown). In such a configuration, when the heating switch (not shown) is provided separately from the shaving switch (see switch SW in FIG. 2A), the heating means 22 is connected to the electric motor 11 that is activated when the shaving switch is turned on. can operate independently.

When the control unit 300 starts operating the heating unit 22 when the operation start condition for the heating unit 22 is satisfied (YES in step S500), the control unit 300 determines whether or not the operation termination condition for the heating unit 22 is satisfied. (Step S502). The conditions for terminating the operation of the heating means 22 are arbitrary and can be varied. For example, the condition for terminating the operation of the heating means 22 may be satisfied by turning off a heating switch (not shown). When the operation end condition of the heating means 22 is satisfied (YES in step S504), the control unit 300 stops applying the high frequency voltage to the pair of electrodes 221 related to the heating means 22 (step S506).

Alternatively, other embodiments may have multiple modes of operation. For example, the plurality of operation modes include a shaving-only mode in which only the electric motor 11 operates, a shaving & heating mode in which both the electric motor 11 and the heating means 22 operate, and a heating-only mode in which only the heating means 22 operates. May include.

In other embodiments, the head section 20 may include a temperature sensor that detects the temperature of the heating means 22 or the target region, and in this case, the control section 300 may control the temperature based on the temperature information from the temperature sensor. The heating means 22 may also be controlled. For example, the control unit 300 may control the heating means 22 so that the temperature indicated by the temperature information from the temperature sensor matches a predetermined target value. In this case, the predetermined target value may be constant, one of a plurality of levels may be selectable by the user, or the predetermined target value may be adjustable (customized) by the user.

Further, in other embodiments, a current sensor may be provided in the head section 20 or the main body section 10. In this case, when the temperature or current exceeds a predetermined threshold value, the heating may be stopped even if the degree of heating by the heating means 22 is weakened, and conversely, when the temperature or current is below another threshold value, the heating means 22 may be stopped. The degree of heating by 22 may be increased. The temperature sensor or current sensor may be able to detect that foreign matter has adhered to the head portion 20, and when the desired skin quality improvement cannot be obtained, the electric shaver 1 may be operated at a lower level or stopped. You may.

In other embodiments, the head section 20 may include a contact or proximity sensor that detects contact or proximity with the target region, in which case the control section 300 may detect contact or proximity sensors from the contact or proximity sensor. The heating means 22 may be controlled based on the information. For example, the control section 300 may activate the heating means 22 only when sensor information from a contact or proximity sensor indicates contact or proximity between the head section 20 and the target site.

By the way, in this embodiment, since the heating means 22 is provided in the head section 20, a configuration that can transmit the operating state of the heating means 22 to the user may be useful. In particular, in a configuration in which the heating means 22 and the electric motor 11 can operate independently of each other as shown in FIG. 5, it is more convenient if the operating state of the heating means 22 can be communicated to the user.

Therefore, in this embodiment, the head section 20 may be provided with a light irradiation section 70 (see FIG. 1). The light irradiation unit 70 may be configured to irradiate light for information transmission. For example, when having a plurality of operation modes as described above with reference to FIG. 5, the light irradiation section 70 may emit light in a different color for each operation mode. Note that the light irradiation section 70 may be realized by a light emitting diode or the like. Further, the light irradiation unit 70 may be configured to apply optical stimulation to the skin according to the frequency of the irradiated light, and is arranged so that the user can visually check the condition of the skin to be treated by irradiating visible light. Good too.

Alternatively, the light irradiation section 70 may function as a heating means separate from the heating means 22. Alternatively, the light irradiation unit 70 may irradiate light at a frequency that acts to damage the hair roots. In this case, the on/off of the light irradiation section 70 and the output when it is on may be adjustable (customized) by the user.

Next, an example of the head section 20 will be described in detail with reference to FIG. 6 and subsequent figures.

6 is an exploded perspective view of the entire head section 20, and FIG. 7 is an exploded perspective view of a portion of the head section 20. FIG. 8 is a perspective view showing the main holder portion 231 alone. 6 to 8 show three orthogonal axes (X-axis, Y-axis, and Z-axis) in a right-handed coordinate system.

In the example shown in FIGS. 6 to 8, the head section 20 includes a cutter unit 21 and a heating means 22, and three sets of each cutter unit 21 and heating means 22 are provided. In addition, in a modified example, the number of sets other than three (for example, one set, two sets, or four or more sets) may be used. In the example shown in FIGS. 6 to 8, the pair of electrodes 221 of the heating means 22 is formed by an outer blade portion 2131 and a frame portion 224, as will be described later. Note that the electrical connection between the three sets of heating means 22 and the control unit 300 (and battery 12) may be realized by electrical contacts 19, 29 as shown in FIG. Although six sets of electrical contacts 19, 29 may be provided for a total of six electrodes 221 related to the heating means 22, preferably, two sets of electrical contacts 19, 29 are provided. In the case of two sets of electrical contacts 19, 29, six electrodes 221 associated with three sets of heating means 22 operate in common. In this case, the electrical contact structure between the main body part 10 and the head part 20 can be simplified.

Further, in the examples shown in FIGS. 6 to 8, the head section 20 includes a base section 230, a main holder section 231 (an example of a holder section), and a shaver holder 232. In the example shown in FIGS. 6 to 8, three sets of shaver holders 232 are provided along with a frame 224, which will be described later, corresponding to three sets of cutter units 21. In FIG. 6, only one of the three sets is shown disassembled from the main holder portion 231. Each of the three sets may have a similar configuration, and any one set will be described below unless otherwise specified.

The base 230 can be detachably connected to the main body 10 (see FIG. 1). Note that the base portion 230 may be supported relative to the main body portion 10 in such a manner that the head portion 20 is movable relative to the main body portion 10 as described above.

The base 230 has a rotating shaft portion 2301 that rotates with rotation from the electric motor 11 . The rotating shaft portion 2301 may be provided for each cutter unit 21. Therefore, in the examples shown in FIGS. 6 to 8, three rotating shaft portions 2301 are provided. Note that each of the rotating shaft parts 2301 can transmit power to the shaft member 13 (see FIG. 1) that rotates integrally with the rotating shaft of the electric motor 11 via a power transmission mechanism (not shown) such as a gear. may be connected to

The main holder section 231 holds the cutter unit 21 and the frame section 224 via a shaver holder 232. Main holder portion 231 has an opening 2310 in which shaver holder 232 is placed.

Main holder part 231 is attached to base 230. The main holder part 231 may be fixed to the base part 230, but is preferably supported in a manner that it can be attached to and removed from the base part 230 or can be opened and closed. In the example shown in FIGS. 6 to 8, the main holder portion 231 is rotatably supported (openable and closable) around an opening/closing shaft 2302 of the base portion 230. In the example shown in FIGS. In this case, the main holder portion 231 can be opened and closed with respect to the base portion 230 by rotating around the opening/closing shaft 2302. The closed state of the main holder section 231 is a normal use state, and the open state of the main holder section 231 is for removing hair (cut hair) that may accumulate between the main holder section 231 and the base 230. It may be realized.

Shaver holder 232 is made of resin or the like, for example. Shaver holder 232 holds cutter unit 21 and frame 224 . The shaver holder 232 may include a stopper portion 2321 that restricts movement of the cutter unit 21 to the negative side in the Y direction.

The shaver holder 232 is attached to the main holder part 231, as can be seen from FIG. The shaver holder 232 may be fixed integrally with the main holder part 231, but is preferably supported so as to be displaceable with respect to the main holder part 231. Thereby, it becomes easy to bring the cutter unit 21 into close contact with the user's target region, and hair removal efficiency can be effectively increased. In the examples shown in FIGS. 6 to 8, as shown in FIG. It is rotatably supported around a shaft support 2314.

In this embodiment, the cutter unit 21 is supported by the main holder portion 231 via the shaver holder 232 as described above. As shown in FIG. 7, the cutter unit 21 includes an outer cutter section 2131 and a rotary inner cutter section 2132.

The outer blade portion 2131 has a contact surface portion 21311 on the positive side in the Y direction that can contact the target region. The contact surface portion 21311 is formed with a plurality of fine holes into which bristles can enter, and the edges of the holes form outer blades. The contact surface portion 21311 has the function of making the hair stand up by inserting the hair into the fine pores. When the hair stands up, the combination of the outer blade part 2131 and the inner blade part 2132 makes it easier to cut the hair. In the example shown in FIGS. 6 to 8, the outer cutter portion 2131 has a cylindrical peripheral wall portion 21312, and the positive side of the peripheral wall portion 21312 in the Y direction is covered with a contact surface portion 21311. An inner blade portion 2132 is accommodated on the inner diameter side of the cylindrical peripheral wall portion 21312.

In this embodiment, the outer blade portion 2131 is a conductor and is formed of an electrically conductive material. The outer cutter portion 2131 forms one of the pair of electrodes 221 of the heating means 22 described above with reference to FIGS. 2 and 3. Specifically, the outer cutter portion 2131 has a contact surface portion 21311 that contacts the target region 900 forming one of the pair of electrodes 221 of the heating means 22 described above with reference to FIGS. 2 and 3.

Note that the outer blade portion 2131 may be formed of one or more materials, or may be formed of two or more materials. For example, the contact surface portion 21311 may be formed of a relatively rigid conductive material such as metal, and the peripheral wall portion 21312 may be formed of an insulating material such as resin.

The inner blade part 2132 is non-rotatably connected to the rotating shaft part 2301 and rotates together with the rotating shaft part 2301. The inner blade portion 2132 is rotationally driven around the rotation axis of the rotation shaft portion 2301 by the electric motor 11. The inner cutting portion 2132 has a plurality of cutter blades 21321 having cutting edges. The plurality of cutter blades 21321 are arranged adjacent to the contact surface portion 21311 of the outer cutter portion 2131 in the Y direction. In this case, when the inner cutter section 2132 rotates, the hair 901 passing through the hole in the contact surface section 21311 is cut by the combination of the outer cutter and the cutter blade 21321 of the inner cutter section 2132.

The frame portion 224 forms an electrode ring provided around the cutter unit 21. That is, the frame portion 224 is arranged on the outer diameter side of the cylindrical peripheral wall portion 21312 of the outer cutter portion 2131. The frame portion 224 is supported by the main holder portion 231 via the shaver holder 232 as described above.

In the examples shown in FIGS. 6 to 8, the frame portion 224 is a conductor and is formed of an electrically conductive material. Specifically, the frame portion 224 forms the other of the pair of electrodes 221 of the heating means 22 described above with reference to FIGS. 2 and 3. That is, the frame portion 224 cooperates with the contact surface portion 21311 of the outer cutter portion 2131 to form the pair of electrodes 221 of the heating means 22 described above with reference to FIGS. 2 and 3.

By realizing the pair of electrodes 221 of the heating means 22 by the frame portion 224 and the contact surface portion 21311 of the outer cutter portion 2131, a heating effect can be achieved over the entire range of the target region that comes into contact with the contact surface portion 21311. can be granted.

The frame portion 224 is slightly spaced apart from the outer cutter portion 2131 so that an electrical short circuit does not occur between the frame portion 224 and the outer cutter portion 2131. In the example shown in FIGS. 6 to 8, the frame portion 224 has an inner diameter larger than the outer diameter of the cylindrical peripheral wall portion 21312, and is spaced apart from the peripheral wall portion 21312 in the radial direction. Further, the shaver holder 232 has a ring-shaped peripheral wall 2324 that protrudes in the Y direction, and the peripheral wall 2324 is arranged between the frame portion 224 and the outer blade portion 2131 in the radial direction. This reliably prevents an electrical short circuit between the frame portion 224 and the outer cutter portion 2131.

9 to 11 are explanatory diagrams of the heating effect of the electric shaver 1 according to the example shown in FIGS. FIG. 3 is a cross-sectional view schematically showing the relationship.

FIG. 9 shows a state immediately before the head portion 20 of the electric shaver 1 comes into contact with a target region 900. In the example shown in FIG. 9, a large number of hairs 901 to be shaved grow in the target region 900, and a shaving gel 902 is applied thereto. Note that shaving foam, lotion, or the like may be used instead of shaving gel 902. By using shaving gel 902 or the like, it is possible to efficiently enhance the heating effect by applying high frequency voltage. In addition, the pores widen and moisture permeates into and around the pores, softening the hair 901 and making it easier to shave the hair 901 (that is, reducing unshaved hair). Furthermore, by allowing moisture to penetrate into the target region 900, so-called shaving loss can be suppressed.

FIG. 10 shows a state immediately after the head portion 20 of the electric shaver 1 comes into contact with the target region 900. In the example shown in FIGS. 6 to 8, a high frequency voltage is applied to the target region 900 using the frame portion 224 as the outer electrode 221 and the contact surface portion 21311 as the inner electrode 221. In addition, in FIG. 10, the path of such a high frequency current is schematically shown by an arrow R1000.

FIG. 11 shows the state after the head portion 20 of the electric shaver 1 has come into contact with the target region 900 and the heating means 22 has been activated. In FIG. 11, the heated range is schematically shown as a hatched region R11. In this manner, according to the examples shown in FIGS. 6 to 8, it is possible to cause the high frequency current to act over the entire range of the target region that contacts the contact surface portion 21311. As a result, the heating effect by the heating means 22 can be efficiently applied over a relatively wide range of the target region. Furthermore, the electrical heating effect based on the high-frequency current provided by the heating means 22 is less likely to cause skin dryness than external heating such as a heater or light irradiation, and can also be expected to maintain skin moisture.

As described above, according to the examples shown in FIGS. 6 to 8, electric shaver 1 configured to heat target region 900 can efficiently apply a heating effect over a relatively wide range of target region 900. Thereby, hair removal efficiency can be effectively increased.

Further, according to the examples shown in FIGS. 6 to 8, one of the pair of electrodes 221 of the heating means 22 is realized by the outer blade part 2131 (contact surface part 21311), and the other of the pair of electrodes 221 is realized by the frame part. 224, the heating means 22 can be realized with a relatively small number of parts. That is, by using the outer cutter portion 2131, which is an existing component, the number of additional components for providing the heating means 22 can be reduced.

In the examples shown in FIGS. 6 to 8, one of the pair of electrodes 221 of the heating means 22 is realized by the entire contact surface portion 21311, but it may be realized by only a part of the contact surface portion 21311. .

Similarly, the other of the pair of electrodes 221 of the heating means 22 is realized by the entire frame portion 224, but may be realized by a part of the frame portion 224. For example, the frame portion 224 may be formed by insert molding of resin and metal materials. In this case, the portion of the metal material forms the electrode 221.

In the examples shown in FIGS. 6 to 8, the light irradiation section 70 described above with reference to FIG. 1 may be provided around the cutter unit 21, that is, on the frame section 224. Alternatively, the light irradiation section 70 may be provided outside the frame section 224. Alternatively, the light irradiation unit 70 may be provided at the end of the peripheral wall 2324 on the positive side in the Y direction.

In the examples shown in FIGS. 6 to 8, a film heater 240 as schematically shown in a plan view in FIG. 12 may be provided in the frame 224 as another heating means 22. In this case, the film heater 240 may be placed on the frame 224 in a manner that does not inhibit the function of the frame 224 as the electrode 221. Alternatively, in this case, the pair of electrodes 221 may be eliminated and the film heater 240 may function as the only heating means 22. In addition, also when using the film heater 240, the wiring from the battery 12 or the control part 300 may be as mentioned above with reference to FIG.

Next, an example of the wiring structure 90 in the head section 20 applicable to the examples shown in FIGS. 6 to 8 will be described with reference to FIGS. 13 and 14. In the following description, (1), (2), and (3) are added to the end of the reference numerals when distinguishing each of the three cutter units 21 for distinction. Note that FIG. 14 shows one of the cutter units 21 removed.

13 and 14 are diagrams showing an example of the wiring structure 90 in the head section 20.

The wiring structure 90 is an electrical connection structure that realizes electrical connection between the pair of electrical contacts 29 and the pair of electrodes 221 shown in FIG. 2, and as shown in FIG. It has a contact holding part 290 that holds the. The contact holder 290 is detachable from a contact holder on the main body 10 (not shown). In this case, a magnetic contact using a magnet may be realized. When the contact holder 290 is attached to the contact holder on the main body 10 side, the pair of electric contacts 29 is electrically connected to the pair of electric contacts 19 (see FIG. 2).

The wiring structure 90 includes a first wiring 91 (an example of wiring) having one end joined to one of the pair of electrical contacts 29 and a second wiring 92 having one end joined to the other of the pair of electrical contacts 29 . The other end of the first wiring 91 is joined to one of the paired electrodes 221, and the other end of the second wiring 92 is joined to the other of the paired electrodes 221.

As shown in FIG. 13, the first wiring 91 includes a first lead-out portion 910 and two first transition portions 911 and 912 (an example of a wiring portion).

The first drawer section 910 is inserted into the main holder section 231 from the outside. As shown in FIG. 14, the first drawer part 910 has one end on the outside side of the main holder part 231 joined to one of the pair of electrical contacts 29, and the other end on the inside side joined to one end as shown in FIG. It is joined to the outer blade portion 2131 of the cutter unit 21(1). Note that the first drawer portion 910 may be joined to the lower side (the negative side in the Y direction) of the outer blade portion 2131.

As shown in FIG. 13, the first transition part 911 has one end joined to the outer blade part 2131 of one cutter unit 21(1), and the other end joined to the outer blade part 2131 of the other one cutter unit 21(2). It is joined to the blade portion 2131. In this way, the outer cutter portion 2131 of one cutter unit 21 (1) and the outer cutter portion 2131 of the other cutter unit 21 (2) are electrically connected via the first transition portion 911. be done.

As shown in FIG. 13, the first transition part 912 has one end joined to the outer blade part 2131 of another cutter unit 21(2), and the other end joined to the outer cutter part 2131 of another cutter unit 21(2). 3) is joined to the outer blade portion 2131. In this way, the outer cutter section 2131 of the other cutter unit 21 (2) and the outer cutter section 2131 of the still other cutter unit 21 (3) are connected to each other via the first transition section 912. electrically connected.

In this way, the first wiring 91 connects one of the pair of electrical contacts 29 to the three electrodes 221 forming one of the pair of electrodes 221 via the first lead-out portion 910 and the two first transition portions 911 and 912. It is electrically connected to each outer blade portion 2131 of the cutter unit 21. Thereby, the three cutter units 21 forming one of the paired electrodes 221 can be energized simultaneously via one of the paired electrical contacts 29 .

Similarly, the second wiring 92 includes a second lead-out portion 920 and two second transition portions 921 and 922.

The second drawer part 920 is inserted into the main holder part 231 from the outside. As shown in FIG. 14, the second drawer part 920 has one end on the outside side of the main holder part 231 joined to one of the pair of electrical contacts 29, and the other end on the inside side joined to one end as shown in FIG. It is joined to the frame portion 224 around the cutter unit 21(3). Note that the second drawer portion 920 may be joined to the lower side (the negative side in the Y direction) of the frame portion 224.

As shown in FIG. 13, the second transition part 921 has one end joined to the frame part 224 around one cutter unit 21(3), and the other end joined to the frame part 224 around the other one cutter unit 21(2). It is joined to the frame portion 224. In this way, the frame portion 224 around one cutter unit 21 (3) and the frame portion 224 around the other cutter unit 21 (2) are electrically connected via the second transition portion 921. be done.

As shown in FIG. 13, the second transition part 922 has one end joined to the frame part 224 around the other cutter unit 21(2), and the other end joined to the frame part 224 around the other cutter unit 21(2). 1) It is joined to the surrounding frame portion 224. In this way, the frame portion 224 around the other cutter unit 21(2) and the frame portion 224 around the still other cutter unit 21(1) are connected via the second transition portion 922. electrically connected.

In this way, the second wiring 92 connects the other of the pair of electrical contacts 29 to the three electrodes forming the other of the pair of electrodes 221 via the second lead-out portion 920 and the two second transition portions 921 and 922. It is electrically connected to each of the frame parts 224. Thereby, the three frame portions 224 forming the other pair of electrodes 221 can be energized simultaneously via the other of the pair of electrical contacts 29 .

By the way, in the examples shown in FIGS. 6 to 8, as described above, each cutter unit 21 is supported movably with respect to the main holder portion 231, and when the electric shaver 1 is used, the shape of the target portion 900 is adjusted. It can be displaced with respect to the main holder part 231 depending on the situation.

Therefore, in the wiring structure 90 shown in FIGS. 13 and 14, the first lead-out part 910 of the first wiring 91 is preferably one of the pair of electrodes 221 even when the cutter unit 21 is displaced with respect to the main holder part 231. It is configured to maintain a bonded state with. Specifically, the lead-out portion 910 of the first wiring 91 preferably has appropriate looseness and flexibility to absorb displacement of the cutter unit 21(1) with respect to the main holder portion 231. For example, the first lead-out portion 910 may be configured with a single or stranded electric wire, a flat cable, a conductive spring, or the like. Thereby, even if the cutter unit 21(1) is displaced in accordance with the unevenness of the target region 900 when the electric shaver 1 is used, the skin of the target region 900 can be stably heated.

Similarly, in the wiring structure 90 shown in FIGS. 13 and 14, the first transition portion 911 of the first wiring 91 is preferably arranged when the two cutter units 21 are displaced independently of each other with respect to the main holder portion 231. However, the structure is such that the bonded state with one of the paired electrodes 221 is maintained at both ends of the first transition portion 911 . Specifically, the first transition portion 911 of the first wiring 91 preferably has appropriate looseness and flexibility so as to be able to absorb mutually independent displacement of the two cutter units 21 with respect to the main holder portion 231. For example, the first transition portion 911 may be configured with a single or stranded electric wire, a flat cable, a conductive spring, or the like. As a result, even if the two cutter units 21 (1) and (2) are displaced independently from each other in accordance with the unevenness of the target area 900 when the electric shaver 1 is used, the skin of the target area 900 can be stably heated. . This also applies to the first transition section 912.

Note that, unlike the cutter unit 21, the frame portion 224 is not displaceable with respect to the main holder portion 231, and therefore the second wiring 92 may have a structure with relatively little looseness or low flexibility.

Further, according to the example shown in FIGS. 13 and 14, by having the first transition parts 911, 912 and the second transition parts 921, 922, even in the head part 20 having three cutter units 21, three cutter units 21 can be used. An efficient wiring structure 90 can be realized for the pair of electrodes 221 provided in association with each of the units 21.

In the example shown in FIGS. 13 and 14, the pair of electrical contacts 29 on the head portion 20 side are held in a contact holding portion 290 that is separate from the connection portion between the head portion 20 and the main body portion 10. However, it is not limited to this. For example, the pair of electrical contacts 29 on the head portion 20 side may be provided at the connection portion between the head portion 20 and the main body portion 10, as described above. For example, a pair of electrical contacts 29 on the head portion 20 side may be provided on the held portion 2304 of the base portion 230 as shown in FIG. In this case, the first lead-out portion 910 of the first wiring 91 and the second lead-out portion 920 of the second wire 92 may be pulled out to the base 230 using the rotating shaft portion 2301 or the like. In this case, a part of the first lead-out part 910 of the first wiring 91 and a part of the second lead-out part 920 of the second wiring 92 are realized by a conductor part that may be buried in the base 230 by insert molding or the like. Good too.

Further, in the examples shown in FIGS. 13 and 14, a part of the first wiring 91 and a part of the second wiring 92 may be realized by a conductor part that may be embedded in the main holder part 231 by insert molding or the like. .

Further, in this embodiment, the first wiring 91 and/or the second wiring 92 may be made of stainless steel wire. Further, the surfaces of the first wiring 91 and/or the second wiring 92 may be plated with nickel or zinc. In addition, the first wiring 91 and/or the second wiring 92 are made of stainless steel whose surface is resistant to corrosion due to a passive film, and has a high electrical resistance.The surface of the first wiring 91 and/or the second wiring 92 is plated with nickel, which has a low electrical resistance, so that it is resistant to rust and conducts electricity easily. can do. In addition, it is easy to design because it can conduct electricity even though it can be washed with water. Further, the electrical contacts 19 and/or the electrical contacts 29 may also be plated on stainless steel. The surface material of the first wiring 91 and/or the second wiring 92 and the electrical contact 19 and/or the electrical contact 29 may be made of the same material such as nickel. Deterioration due to contact corrosion of different metals can be prevented.

Further, in this embodiment, an insulating film may be provided on the surface of the first wiring 91 and the second wiring 92 so that they do not come into contact with each other and cause an electrical short circuit, or the distance between the wirings may be increased. A wall may be provided between the wires to increase the creepage distance, and the entire head portion 20 may be made smaller.

Further, in this embodiment, the first wiring 91 and/or the second wiring 92 may be arranged so that the insulation resistance is greater than the insulation resistance between the frame portion 224 and the outer blade portion 2131. For example, the distance may be increased. As a result, even if the space between the first wiring 91 and the second wiring 92, the frame part 224 and the outer blade part 2131 is filled with a liquid such as water or a conductive substance such as gel, the frame part 224 and the outer blade part 2131 This allows the current to flow more easily. For example, by arranging the insulation resistance between the first wiring 91 and the second wiring 92 to be 1 megohm or more when dry and 100 ohm or more when filled with gel, the battery 12 can be made small while heating the skin by high frequency. can be ensured.

[Example 2]
Next, with reference to FIG. 16 and subsequent figures, a second embodiment that can be suitably realized in place of the first embodiment described above will be described. In the following description and drawings of Example 2, constituent elements that may be the same as those in Example 1 described above may be designated by the same reference numerals and the description thereof may be omitted. In the following description, the side of the head unit 20A that is closer to the user's skin (i.e., the positive side in the Y direction) when the electric shaver 1A is in use will be referred to as the "upper side," and the opposite side, that is, the side that is farther from the skin (Y (the negative side of the direction) is sometimes referred to as the "lower side".

FIG. 16 is a perspective view of the head portion 20A of the electric shaver 1A of this embodiment, and shows the cutter unit 21A and shaver holder 232A in an exploded state. FIG. 17 is a perspective view of the head section 20A of the electric shaver 1A of this embodiment, with one cutter unit 21A and shaver holder 232A removed, and one cutter unit 21A and shaver holder 232A shown in cross section. shown visually. FIG. 18 is a perspective view of the base 230A of the electric shaver 1A of this embodiment. FIG. 19 is an explanatory diagram of the wiring structure 90A of this embodiment, and is a perspective view from the bottom side of the head portion 20A of the electric shaver 1A of this embodiment. In FIG. 19, base 230 is shown removed. FIG. 19A is a perspective view from below of the frame portion 224A, and also shows a part of the wiring structure 90A. FIG. 20 is a perspective view of the electrical connection structure of the electric shaver 1A of this embodiment. FIG. 21 is an enlarged perspective view of the characteristic parts of the shaver holder 232A. FIG. 22 is a perspective view showing the arrangement of the light irradiation section 70A, etc. of the electric shaver 1A of this embodiment. FIG. 23 is an explanatory diagram of a method for removing the cutter unit 21A of the electric shaver 1A of this embodiment. FIG. 24 is a perspective view of the cutter unit holding ring 223A of the electric shaver 1A of this embodiment.

In this embodiment, as in the above embodiment, the main holder section 231A of the head section 20A swingably holds the cutter unit 21A and the frame section 224A via the shaver holder 232A. Specifically, in this embodiment as well, the shaver holder 232A rotates the cutter unit 21A so that the cutter unit 21A can swing relative to the head portion 20A, similar to the shaver holder 232 of the above-described embodiment. support possible. That is, in this embodiment as well, the main holder portion 231A has a rotating shaft support 2314 (see FIG. 17) extending in one direction perpendicular to the rotating shaft portion 2301 of the base portion 230A (an example of a second swing support mechanism). The shaver holder 232A is rotatably supported around the rotating shaft support 2314.

Note that in this embodiment, the frame portion 224A is provided on the upper surface of the outer peripheral portion of the shaver holder 232A, unlike the frame portion 224 according to the first embodiment described above. For example, the frame portion 224A may be fixed to the shaver holder 232A by fitting or the like, or may be integrally formed by insert molding or the like.

Further, in this embodiment, as in the above-described embodiment, the outer blade portion 2131 (contact surface portion 21311) and the frame portion 224A of the cutter unit 21A are connected to the pair of electrodes 221 related to the heating means 22 (an example of the operating portion). form.

In this embodiment, the head portion 20A accommodates a wiring structure 90A that realizes energization of the pair of electrodes 221. The wiring structure 90A is an electrical connection structure that realizes electrical connection between the pair of electrical contacts 29 and the pair of electrodes 221 shown in FIG.

Specifically, the wiring structure 90A includes a first wiring 91A having one end joined to one of the pair of electrical contacts 29, and a second wiring 92A having one end joined to the other of the pair of electrical contacts 29. The other end of the first wiring 91A is joined to one of the paired electrodes 221, and the other end of the second wiring 92A is joined to the other of the paired electrodes 221.

As shown in FIG. 19, the first wiring 91A includes a first lead-out portion 910A and two first transition portions 911A and 912A.

The first drawer section 910A is arranged inside the main holder section 231A (on the side facing the base section 230A). As shown in FIG. 19, the first lead-out portion 910A is joined at one end to a first electrode 291A that is electrically connected to one of the pair of electrical contacts 29. Further, as shown in FIG. 19, the other end of the first drawer portion 910A is electrically connected to the outer blade portion 2131 (see FIG. 17) of one cutter unit 21A(1). At this time, the first drawer section 910A is electrically connected to a pressure plate 2134A disposed below the outer cutter section 2131 of the first cutter unit 21A (1) via an energizing spring 94A (described later). good.

As shown in FIG. 19, the first transition portion 911A has one end electrically connected to the outer blade portion 2131 of one cutter unit 21A (1) via a current-carrying spring 94A (described later), and the other end. , is electrically connected to the outer blade portion 2131 of the other cutter unit 21A (2) via an energizing spring 94A (described later). In this way, the outer cutter section 2131 of one cutter unit 21A (1) and the outer cutter section 2131 of the other cutter unit 21A (2) are electrically connected via the first transition section 911A. be done.

As shown in FIG. 19, the first transition portion 912A has one end electrically connected to the outer blade portion 2131 of the other cutter unit 21A(2) via a current-carrying spring 94A (described later), and the other The end is electrically connected to the outer blade portion 2131 of yet another cutter unit 21A (3) via an energizing spring 94A (described later). In this way, the outer cutter portion 2131 of the other cutter unit 21A(2) and the outer cutter portion 2131 of the still other cutter unit 21A(3) are connected to each other via the first transition portion 912A. electrically connected.

In this way, the first wiring 91A is connected to the outer blade portion of each of the three cutter units 21A forming one of the pair of electrodes 221 via the first lead-out portion 910A and the two first transition portions 911A and 912A. 2131, one of the pair of electrical contacts 29 is electrically connected. Thereby, the three cutter units 21A forming one of the paired electrodes 221 can be energized simultaneously via one of the paired electrical contacts 29.

Similarly, the second wiring 92A includes a second lead-out portion 920A and two second transition portions 921A and 922A.

The second drawer section 920A is arranged inside the main holder section 231A (on the side facing the base section 230A). As shown in FIG. 19, the second lead-out portion 920A is joined at one end to a second electrode 292A that is electrically connected to the other of the pair of electrical contacts 29. Further, as shown in FIG. 19, the other end of the second drawer portion 920A is electrically connected to the frame portion 224A around the first cutter unit 21A(3). At this time, as shown in FIG. 19A, the second drawer section 920A connects an electrode section 940 arranged below the frame section 224A around the first cutter unit 21A (1) with an energizing spring 94B (described later). may be electrically connected.

As shown in FIG. 19, the second transition section 921A has one end electrically connected to the frame section 224A around the first cutter unit 21A (3) via a current-carrying spring 94B (described later), and the other end. , is electrically connected to the frame portion 224A around the other cutter unit 21A(2) via an energizing spring 94B (described later). In this way, the frame portion 224A around one cutter unit 21A(3) and the frame portion 224A around the other cutter unit 21A(2) are electrically connected via the second transition portion 921A. be done.

As shown in FIG. 19, the second transition portion 922A has one end electrically connected to the frame portion 224A around the other cutter unit 21A(2) via an energizing spring 94B (described later), and the other The end thereof is electrically connected to a frame portion 224A surrounding yet another cutter unit 21A(1) via an energizing spring 94B (described later). In this way, the frame portion 224A around the other cutter unit 21A(2) and the frame portion 224A around the still other cutter unit 21A(1) are connected via the second transition portion 922A. electrically connected.

In this way, the second wiring 92A is attached to each of the three frame portions 224A forming the other of the pair of electrodes 221 via the second lead-out portion 920A and the two second transition portions 921A, 922A. The other electrical contact 29 is electrically connected. Thereby, the three frame portions 224A forming the other pair of electrodes 221 can be energized simultaneously via the other of the pair of electrical contacts 29.

Note that in this embodiment as well, the first wiring 91A and/or the second wiring 92A may be made of stainless steel wire, as in the first embodiment described above. Further, the surfaces of the first wiring 91A and/or the second wiring 92A may be plated with nickel or zinc. In addition, the first wiring 91A and/or the second wiring 92A are made of stainless steel whose surface is resistant to corrosion due to a passive film, and has a high electrical resistance.The surface of the first wiring 91A and/or the second wiring 92A is plated with nickel, which has a low electrical resistance, so that it is resistant to rust and conducts electricity easily. can do. In addition, it is easy to design because it can conduct electricity even though it can be washed with water. Further, the electrical contacts 19 and/or the electrical contacts 29 may also be plated with stainless steel. The surface material of the first wiring 91A and/or the second wiring 92A and the electrical contact 19 and/or the electrical contact 29 may be made of the same material such as nickel. Deterioration due to contact corrosion of different metals can be prevented.

Further, in this embodiment, an insulating film may be provided on the surface of the first wiring 91A and the second wiring 92A so that they do not come into contact with each other and cause an electrical short circuit, or the distance between the wirings may be increased. A wall may be provided between the wires to increase the creepage distance, and the entire head portion 20A may be made smaller.

Further, in this embodiment, the insulation resistance of the first wiring 91A and/or the second wiring 92A may be arranged to be higher than the insulation resistance between the frame portion 224A and the outer blade portion 2131. For example, the distance may be increased. As a result, even if the space between the first wiring 91A and the second wiring 92A, the frame portion 224A and the outer blade portion 2131 is filled with a liquid such as water or a conductive substance such as gel, the frame portion 224A and the outer blade portion 2131 This allows the current to flow more easily. For example, by arranging the insulation resistance between the first wiring 91A and the second wiring 92A so that it is 1 megohm or more when dry and 100 ohm or more when filled with gel, the battery 12 can be made smaller and the skin can be heated by high frequency. can be ensured.

Here, as described above, the wiring structure 90A of this embodiment includes current-carrying springs 94A and 94B (an example of a stretchable conductor element) at the ends of the first transition portion 911A, the second transition portion 921A, etc. . The energizing springs 94A and 94B are in the form of coil springs, and may be expandable and contractible in the direction along the rotating shaft portion 2301. One end of the energizing spring 94A is electrically connected to the outer blade portion 2131 of the cutter unit 21A, and the other end is electrically connected to the electrical contact 29. One end of the energizing spring 94B is electrically connected to the frame portion 224A, and the other end is electrically connected to the electrical contact 29 via a wiring spring 954A, which will be described later.

Note that the energizing springs 94A and 94B do not need to directly contact the lower surface of the outer cutter portion 2131 and the lower surface of the frame portion 224A in the cutter unit 21A, and may be electrically connected via other members (conductor members). Bye. For example, as shown in FIG. 19, the energizing spring 94A may be electrically connected to the outer blade portion 2131 via a conductive pressure plate 2134A. Furthermore, the energizing spring 94B may be electrically connected to the frame portion 224A via the electrode portion 940, as described above with reference to FIG. 19A.

The energizing springs 94A and 94B are configured to remain electrically connected to the outer blade portion 2131 and the frame portion 224A of the cutter unit 21A even in any rotational state of the cutter unit 21A relative to the main holder portion 231A. and placed.

In this case, even when the shaver holder 232A rotates with respect to the main holder part 231A, the energizing springs 94A and 94B expand and contract accordingly, thereby energizing the frame part 224A and the outer blade part 2131, which are the pair of electrodes 221. The electrical connection between the springs 94A and 94B can be maintained. As described above, in this embodiment, even in any rotational state of the shaver holder 232A (and the frame portion 224A and the outer blade portion 2131) relative to the main holder portion 231, the electric contacts 29 on the head portion 20A side and the pair of electrodes 221 (frame portion 224A and outer blade portion 2131) can be maintained.

The wiring structure 90A further includes a conductor torsion spring 950A provided around the opening/closing shaft 2302, as shown in FIGS. 18 and 19. The torsion springs 950A are provided in pairs, and one end of each is electrically connected to the above-described first electrode 291A and second electrode 292A. Further, as shown in FIG. 20, the other end of the torsion spring 950A is connected to the electric contact 29 (transmission means 294A described later). According to such a wiring structure 90A, as shown in FIG. 19, substantially all of the wiring structure 90A is arranged inside the head portion 20A (ie, on the base 230A side of the main holder portion 231A). Therefore, when the head portion 20A is open, as shown in FIG. 18, the wiring structure 90A is not substantially arranged on the base portion 230A. Further, a member such as the contact holding portion 290 of the first embodiment described above with reference to FIG. 14 is not required.

Note that, as shown in FIG. 22, a wiring structure 90B (partially shown in FIG. 20) for supplying electricity to the light irradiation unit 70A and the temperature measuring means 72A disposed in the base 230A may be arranged in the base 230A.

Further, in this embodiment, a cutter unit holding ring 223A is provided on the outer periphery of the cutter unit 21A. The cutter unit holding ring 223A has a function of detachably holding the cutter unit 21A with respect to the head portion 20A. The cutter unit holding ring 223A is arranged from above with respect to the cutter unit 21A in such a manner that the cutter unit 21A is sandwiched between the cutter unit 21A and the shaver holder 232A so that the wiring structure 90A can be easily arranged in the main holder part 231A. to lock. The cutter unit holding ring 223A is disposed on the outer circumferential side of the cutter unit 21A (the outer circumferential side of the cylindrical peripheral wall portion 21312 of the outer cutter portion 2131), and allows the cutter unit 21A to be held by the shaver holder 232A from above. The cutter unit holding ring 223A may be press-fitted into the outer peripheral portion of the cutter unit 21A, or may be integrally molded by insert molding. When the cutter unit holding ring 223A is integrated with the cutter unit 21A, the cutter unit 21A can be easily attached to and detached from the head portion 20A.

Here, in the conventional electric shaver, when removing the cutter unit 21A for cleaning or replacement, the cutter unit 21A is removed toward the inside of the head portion 20A. In contrast, in this embodiment, wiring is provided inside the head section 20A (that is, inside the main holder section 231A) to prevent the user from accidentally touching the cutter unit 21A and the energizing springs 94A and 94B that energize the heating means 22. are doing. When removing the cutter unit 21A from the main holder portion 231A for cleaning or replacement, be sure to remove it from the outside of the main holder portion 231A, not inside (the side facing the base 230A) where the energizing springs 94A and 94B are arranged. There is. Therefore, the cutter unit 21A can be removed from the shaver holder 232A (and accordingly from the main holder part 231A) without opening the main holder part 231A with respect to the base part 230A. This prevents the user's fingers or the like from hitting the energizing springs 94A, 94B when the cutter unit 21A is attached or detached, so that the narrow space inside the head portion 20A can be effectively used for arranging the energizing springs 94A, 94B. As a result, the above-described skin treatment by energization can be realized while making the entire head portion 20A smaller and improving usability.

Further, in this embodiment, the cutter unit holding ring 223A has a substantially cylindrical shape and is configured to rotate coaxially with the cutter unit 21A. The cutter unit holding ring 223A can also function as a cutter unit attachment/detachment means when the cutter unit 21A is removed from the main holder portion 231 for cleaning or replacement. Specifically, the cutter unit holding ring 223A has a fixed angle at which the cutter unit 21A is fixed to the shaver holder 232A (and accordingly the head section 20A), and a detachment angle at which the cutter unit 21A can be detached from the shaver holder 232A (and accordingly the head section 20A). It is rotatable with respect to the head portion 20A between the angles. Further, a groove portion 2231A is provided on the upper side (user's skin side) of the cutter unit holding ring 223A. The groove portion 2231A is configured to be rotatable within an angular range between a fixed angle and a detached angle.

Here, in conventional electric shavers, the cutter unit attachment/detachment means used when removing the cutter unit for cleaning or replacement is located close to the cutter unit and inside the head so that it can be attached and detached from the inside of the head. (the side facing the base). In contrast, in this embodiment, the cutter unit holding ring 223A has a cylindrical shape that rotates coaxially with the cutter unit 21A, and detachably fixes the cutter unit 21A from above the head portion 20A. Further, the cutter unit holding ring 223A has a groove portion 2231A provided on the outside (upper side) of the head portion 20A rather than on the inside. The cutter unit 21A is fixed when the groove 2231A is rotated clockwise, and removed when the groove 2231A is rotated counterclockwise. When viewed from the user's skin side (upper side), the cutter unit holding ring 223A is arranged so that the contact surface portion 21311 of the cutter unit 21A, the upper surface (action surface) of the frame portion 224A, and the cutter unit holding ring 223A are further away in this order. Because of this arrangement, the groove portion 2231A of the cutter unit holding ring 223A does not come into contact with the user's skin while the head portion 20A is in contact with the user's skin. Thereby, it is possible to prevent the cutter unit 21A from being inadvertently attached or detached while enabling a useful effect on the skin via the head portion 20A. In addition, the cutter unit holding ring 223A is cylindrical and thin, and the space between the cutter unit 21A and the frame 224A can be narrowed, so even when electricity is applied between them, the electrical resistance is small and useful effects can be achieved. Can be maximized. Therefore, the head portion 20A can be made smaller to improve usability while optimizing the effect on the skin.

Further, the upper surface (action surface) of the frame portion 224A is preferably a gently curved surface whose height increases from the inside (the side in contact with the cutter unit holding ring 223A) to the outside so as to move away from the user's skin. Change. Further, a slit 219 (see FIG. 17) extends from the contact surface portion 21311 toward the side surface of the cutter unit 21A to guide the user's beard into the cutter unit 21A. The slit 219 may be in the form of a linear hole into which the whiskers fit. Due to the step and curved surface between the contact surface section 21311 and the upper surface of the frame section 224A, even if the user's skin has a complex curved surface, the user's beard is easily captured into the cutter unit 21, and the user's beard can be easily captured into the cutter unit 21, and the user's beard can be cut into the cutter unit 21 even if the user's skin has a complex curved surface. The contact surface portion 21311 can be brought into contact with the upper surface of the frame portion 224A. Therefore, the head portion 20A can be made smaller to improve usability while optimizing the effect on the skin. More preferably, the height difference between the contact surface portion 21311 and the upper surface of the frame portion 224A is set to 0.2 mm or more and 2 mm or less, thereby achieving effective shaving performance while improving the contact with the user's skin. can.

Further, in this embodiment, a cleaning means 50 in the form of a brush for cleaning the head portion 20A is provided, and a groove is provided in a part of the cleaning means 50 so as to rotate the cutter unit holding ring 223A from a fixed angle to a detachment angle. A protrusion 52 facing 2231A is provided.

Here, in some conventional electric shavers, a protrusion is provided on the frame portion so that the shaver can be attached and detached from the inside of the head portion so that it is easy to put a finger on the head portion. In contrast, in this embodiment, the protrusion 52 facing the groove 2231A of the cutter unit holding ring 223A is provided on the cleaning means 50 for cleaning the cutter unit 21A. The cutter unit 21A can be attached to and detached from the head portion 20A by simply rotating the cutter unit 21A against the groove portion 2231A. Therefore, unlike conventional attachment/detachment means, there is no need for a protrusion for placing a finger on, and the head can be designed to be small, making it easy to use.

In addition, in this embodiment, the main holder section 231A of the head section 20A that rotatably supports the shaver holder 232A (and the cutter unit 21A and the frame section 224A) has a main holder section 231A shown in FIGS. 17 and 21 on its upper surface. As shown, a recess 206A is provided. The recessed portion 206A may have, for example, a V-shaped cross section when viewed from the side. The recess 206A is provided between a plurality of shaver holders 232A adjacent to each other in a direction perpendicular to the rotation axis of the rotation shaft support 2314. The recess 206A allows each shaver holder 232A between each pair of adjacent shaver holders 232A to fall toward the adjacent shaver holder 232A and toward the main holder portion 231A (lower side). Note that a stopper portion 2061A may be provided in the recessed portion 206A to prevent excessive rotation of the shaver holder 232A (and accordingly, the cutter unit 21A and frame portion 224A).

Here, in conventional electric shavers, when providing a shaver holder that supports multiple cutter units to the head so that the multiple cutter units can swing, the cutter units are placed on convex surfaces of the skin such as the cheeks and chin. The shape of the shaver holder side was changed so that it could be hit. That is, the shaver holder has generally been designed to be thinner toward the adjacent cutter units so that the surfaces of the adjacent cutter units are concave. However, since such a shaver holder has a partially thin portion, it is not possible to provide an electrode for skin treatment (for example, an electrode 221 such as the frame portion 224A). That is, even if the electrode 221 can be placed in the thick part of the shaver holder, it cannot be placed in the thin part. If the shaver holder is made thicker so that the electrode 221 can be placed in a thinner part, there is a problem that the cutter unit cannot be aligned with the convex surface of the skin, creating a gap that prevents shaving. On the other hand, in this embodiment, the upper surface of the main holder part 231A of the head part 20A is provided with recesses 206A on the sides adjacent to the cutter units 21A so as to fall into the head part 20A, so that the electrodes 221, etc. Heating means 22 can be provided on shaver holder 232A. As a result, the head portion 20A can be made smaller and easier to use, while achieving both effective skin treatment and effective shaving performance as described above.

Next, details of the mechanical connection structure and electrical connection structure between the head section 20A and the main body section 10A according to this embodiment will be explained with reference to FIGS. 25 to 27 together with FIG. 20 described above. do. The mechanical connection structure and electrical connection structure between the head section 20A and the main body section 10A described below can also be applied to various skin treatment devices (for example, facial beauty devices, etc.) other than the electric shaver 1A. . Further, the wiring structure 90A described above with reference to FIG. 19 and the like can also be applied to various skin treatment devices (for example, facial beauty devices, etc.) other than the electric shaver 1A.

FIG. 25 is a perspective view showing the connecting portion between the head portion 20A and the main body portion 10A of the electric shaver 1A of this embodiment from below. FIG. 26 is a perspective view of the connection portion of the main body 10A of the electric shaver 1A of this embodiment. In FIG. 26, the main body 10A is partially cut away. FIG. 26A is a perspective view of the connection portion of the main body portion 10A of the electric shaver 1A of this embodiment, and is a perspective view from a different angle from FIG. 26. FIG. 27 is a perspective view of the connection portion of the head portion 20A of the electric shaver 1A of this embodiment, and in FIG. 27, the head portion 20A is shown with a portion thereof cut away. FIG. 28 is a perspective view showing the second connecting means 67A.

In this embodiment, the head portion 20A is rotatably connected to the main body portion 10A by the first connecting means 66A so as to be able to swing relative to the main body portion 10A. The first connecting means 66A may be rotatably connected to the main body 10A, for example, in such a manner that the head portion 20A is rotatable about two axes orthogonal to the rotation axis of the electric motor 11.

Specifically, the first connecting means 66A includes a connecting portion 662A on the main body portion 10A side and a connected portion 664A on the head portion 20A side, as shown in FIGS. 26 and 27. The connecting portion 662A has a spherical concave surface 6620A formed on the upper end surface of the shaft member 13 from the electric motor 11, as shown in FIG. Note that a speed reduction mechanism (not shown) or the like may be provided between the shaft member 13 and the electric motor 11. The connected portion 664A has a spherical convex surface 6640A formed on the lower end surface of the rotating shaft 14 for driving the cutter unit 21, as shown in FIG. When the head section 20A is attached to the main body section 10A, the spherical concave surface 6620A of the connecting section 662A is fitted into the spherical convex surface 6640A of the connected section 664A. In this case, rotation of the head portion 20A with respect to the main body portion 10A is possible through the sliding movement of the spherical surfaces between the spherical concave surface 6620A of the connecting portion 662A and the spherical convex surface 6640A of the connected portion 664A.

Note that the connection between the connecting portion 662A and the connected portion 664A is such that the rotational power from the electric motor 11 is transmitted to the rotating shaft 14 for driving the cutter unit 21 (and the rotating shaft portion 2301 accordingly) (i.e., relative rotation of the shaft member 13 around the axis is regulated). Specifically, as shown in FIG. 26, the connecting portion 662A has a non-circular outer shape (three corners radially inward with respect to the axis of the shaft member 13) when viewed in the axial direction of the shaft member 13. 6621A), thereby regulating the range of the spherical concave surface 6620A. Further, as shown in FIG. 27, the connected portion 664A has a non-circular outer shape (three corner portions 6641A facing inward in the radial direction with the axis of the shaft member 13 as a reference) when viewed in the axial direction of the shaft member 13. The range of the spherical convex surface 6640A is restricted by having the outer shape of the spherical convex surface 6640A.

In addition, in this embodiment, the head portion 20A is rotatably connected to the main body portion 10A by a second connecting means 67A (an example of a first swing support mechanism) so that the head portion 20A can swing relative to the main body portion 10A. Concatenated. The second connecting means 67A may be formed of two rotating shafts 671, 672 and two bearings 676, 677 that are orthogonal to each other, as shown in FIG. 28. Note that the rotating shafts 671 and 672 may be perpendicular to the shaft member 13. In this case, as shown in FIG. 28, the rotating shaft 671 and the bearing 676 allow the head 20A to swing relative to the main body 10A in a direction perpendicular to both the shaft member 13 and the rotating shaft 671. . Similarly, the rotating shaft 672 and the bearing 677 cause the head 20A to swing relative to the main body 10A in a direction perpendicular to both the shaft member 13 and the rotating shaft 672. According to the swinging mechanism related to the second connecting means 67A, the head 20A including the surface (action surface) of the frame portion 224A is supported by the main body portion 10A so as to be swingable in the front, back, left and right directions, and its substantial distance remains unchanged.

Therefore, the user does not need to hold the head 20A and the main body 10A separately, and simply holds the main body 10A and lightly places the head 20A on the approximate position near the skin to be treated. The surface (action surface) of the portion 224A can be applied reliably. Furthermore, when the user desires strong treatment or stimulation, he or she can do so by strongly applying the main body 10A to the skin without touching the head 20A. On the other hand, when performing mild treatment or suppressing irritation, the main body 10A can be applied weakly to the skin.

In this embodiment, the two rotating shafts 671 and 672 and the two bearings 676 and 677 have a gap of 1 mm in the radial direction around the rotating shafts 671 and 672, respectively, so that they can rotate easily. good. Further, the head 20A is biased in advance toward the skin by a transmission means 191A (a coil spring described later). Therefore, the head 20A can move up and down, for example, about 1 mm in the direction of the skin. When the user applies force to the skin with more force than necessary, the transmission means 121A contracts within a range of 1 mm and can absorb the force without damaging the skin.

In this embodiment, the electrical contact 19 (see FIG. 2) on the main body 10A side includes a transmission means 191A that includes a coil spring that can be expanded and contracted in the vertical direction (for example, in a direction parallel to the axial direction of the shaft member 13). include. As shown in FIG. 20, the transmission means 191A has one end connected to the main body and the other end forming the electrical contact 19. In this case, the electrical contact 19 may be in the form of a conductor piece supported by a coil spring (an example of a stretchable conductor element) forming the transmission means 191A. In this case, the conductor piece has a cylindrical or columnar shape, and may be fixedly supported by the coil spring forming the transmission means 191A in such a manner that a portion thereof protrudes from the upper part of the coil spring.

In this embodiment, the electrical contact 19 is supported so as to be vertically movable relative to the contact holder 670, as shown in FIGS. 26, 26A, and 28. Specifically, the electrical contact 19 is movable up and down with respect to the contact holder 670, with the upper limit position being the position where the upper end surface contacts the contact holder 670. The electrical contact 19 is urged upward by a transmission means 191A including the above-mentioned coil spring. Therefore, when the electrical contact 19 is at the upper limit position, the contact holder 670 is urged upward by the transmission means 191A via the electrical contact 19. The contact holder 670 forms a part of the second connection means 67A described above. Specifically, as shown in FIG. 28, the contact holder 670 has a rotating shaft 671, and is supported by a bearing 676 of a swing plate 676A attached to the sub-holder 678 side. In this case, the sub-holder 678 has a rotating shaft 672 that is perpendicular to the rotating shaft 671, and is supported by a bearing 6776 on the bracket 679 side. Note that the bracket 679 is fixed to the main body portion 10A.

In this embodiment, the second connecting means 67A includes two rotating shafts 671 and 672, but is not limited to this, and the surface (action surface) of the frame portion 224A and the main body portion 10A are substantially the same. Other coupling means may also be used as long as they can be kept at a distance and supported swingably. Further, in this embodiment, the swinging mechanism related to the second connecting means 67A is provided on the main body portion 10A side, but may be provided on the head 20A side. In this case, the contact holder 298 on the head 20A side that holds the electrical contact 29 is fixed to the head 20A, but may be supported in a swingable manner.

Further, in this embodiment, the electric contact 29 (see FIG. 2) on the side of the head portion 20A includes a transmission means 294A including a coil spring that can be expanded and contracted in the vertical direction. One end (upper end) of the transmission means 294A forms the electrical contact 29 on the head portion 20A side, and the other end (lower end) is a free end. When the head section 20A is attached to the main body section 10A, the lower end (lower end of the coil spring) of the transmission means 294A is connected to the upper end (electrical contact 19) of the transmission means 191A. At this time, the upper end of the electrical contact 19 in the form of a conductive piece is inserted into the radially inner side of the coil spring of the transmission means 294A, thereby realizing a conductive state between the electrical contact 19 and the electrical contact 29.

According to this configuration, even when the head section 20A rotates with respect to the main body section 10A, the coil springs of the transmission means 191A and the transmission means 294A expand and contract accordingly, so that the head section 20A and the main body section 10A are rotated. The electrical connection between the electrical contacts 19 and 29 (that is, the conductive state between the electrical contacts 19 and 29) can be maintained. That is, in this embodiment, the electrical connection structure is such that even in any swinging state of the head section 20A with respect to the main body section 10A, the electrical connection between the electrical contact 19 on the main body section 10A side and the electrical contact point 29 on the head section 20A side is maintained. electrical connection can be maintained.

In this way, according to the present embodiment, the first connecting means 66A and the second connecting means 67A (that is, the substantial distance between the head section 20A and the main body section 10A) rotatably connect the head section 20A to the main body section 10A. The head can be rotated by the first connecting means 66A and the second connecting means 67A) that enable rotation in a manner that the distance between the heads does not change, and the spring contacts (extensible and contractible transmitting means 191A and 294A) arranged near the first connecting means 66A and the second connecting means 67A). Skin treatment can be achieved by swinging the portion 20A in accordance with the uneven surface of the user's skin. That is, even if the head section 20A swings, the heating means 22, etc. can continue to be energized, so even if the head section 20A swings in accordance with the curved surface of the user's skin, the effective skin treatment described above can be performed. Can be maintained. Therefore, the above-described effective skin treatment can be achieved while improving the usability of the handheld device.

In this embodiment, four pairs of transmission means 191A and four pairs of transmission means 294A may be provided around the first connection means 66A (and the connection structure 40A described later). In this case, the other two pairs of transmission means 191A and transmission means 294A may be connected to the wiring structure 90B for the light irradiation section 70A, as shown in FIG. This makes it possible to realize two combinations: a combination of a positive electrode and a negative electrode for the heating means 22, and a combination of a positive electrode and a negative electrode for the light irradiation section 70A. However, in the modified example, a pair of transmission means 191A and transmission means 294A are provided around the first connection means 66A, or three or more pairs of transmission means 191A and transmission means 294A are provided around the first connection means 66A. , one or more combinations of positive electrodes and negative electrodes may be arranged.

In this embodiment, as shown in FIG. 22, the light irradiation unit 70A is arranged, together with a temperature measuring means 72A such as a thermistor, using a space in the center surrounded by the three cutter units 21A. There is. In this case, since the head section 20A can be illuminated, the user can perform the treatment while constantly checking the condition of the skin, so that the user can obtain the desired results. Further, the heating means 22 can be appropriately controlled based on the measurement result by the temperature measuring means 72.

In this embodiment, the head section 20A has a connection structure 40A that is connected to the head section 20A in a manner that can be attached to and detached from the main body section 10A. In this case, it is also possible to remove the head portion 20A and attach an attachment with a different function (another attachment in place of the head portion 20A). In this case, a plurality of types of attachments with different functions (for example, attachments for facial beauty devices) can be prepared. Attachments with different functions can be attached to the main body 10A in a compatible manner by having the same electrical contacts 29 as the head 20A. In this way, according to this embodiment, the main body part 10A can rotatably and removably hold the head part 20A, so that it can be used for various attachments that can swing and exert various effects on the skin. It becomes possible to install (replace) and improve convenience.

In a configuration in which various attachments can be attached (replaced), the control section 300 of the main body section 10A may be able to specify (identify) the type of attachment in the attached state. In this case, the type of attachment can be identified (identified) by magnetic or electrical means, such as changing the magnetic resistance value or electrical resistance value of the electrical connection structure for each attachment type, or by a mechanical connection structure. This may be realized using mechanical means such as changing the shape of the connecting portion depending on the type of attachment. Alternatively, the control section 300 of the main body section 10A may specify (identify) the type of attachment that is being worn based on input information from the user. In either case, the control unit 300 outputs outputs (for example, the rotational speed of the electric motor 11, optical stimulation, thermal stimulation, vibration stimulation, electrical stimulation, etc.).

In the illustrated example, the connection structure 40A includes a held portion 41A on the head portion 20A side and a holding portion 42A on the main body portion 10A side. In this case, the held portion 41A may be in the form of a convex claw that may be biased by a leaf spring or the like, as shown in FIG. 27, and the held portion 42A may be in the form of a held portion, as shown in FIG. 41A (in the form of a convex claw) may be in the form of a concave claw that can be fitted. In this case, the head portion 20A can be easily attached to and detached from the main body portion 10A by the connection structure 40A including a fitting structure using a claw.

Further, in this embodiment, the lower end of the transmission means 294A on the head portion 20A side is removably connected to the upper end (electrical contact 19) of the transmission means 191A. That is, when the head portion 20A and the main body portion 10A are separated from each other, the other lower end of the transmission means 294A and the upper end of the transmission means 191A are separated from each other, and the electrical contact 19 and electrical contact 29 are in a non-conducting state. Therefore, for example, when the head portion 20A and the main body portion 10A are separated from each other, compared to a configuration in which the electrical contacts 29 and 19 are maintained connected to each other by an electric wire or the like, , electric wires and the like related to wiring do not get in the way, improving convenience. Moreover, attachment (replacement) of various attachments as described above becomes easy, and convenience is improved.

In addition, in this embodiment, only when the head portion 20A is in the attached state where the head portion 20A is attached to the main body portion 10A, the other lower end of the transmitting means 294A and the upper end portion of the transmitting means 191A are connected to each other. becomes. That is, the electrical contact 19 and the electrical contact 29 are in a conductive state. Therefore, when the head portion 20A and the main body portion 10A are separated from each other, the user Unintended operation (malfunction such as operation of the heating means 22 of the detached head section 20A) can be reliably prevented.

In this embodiment, the control unit 300 may be able to distinguish (detect) a state in which the head part 20A is mounted on the main body part 10A and a state in which it is not mounted. For example, the control unit 300 may realize this determination based on the electrical connection state between the electrical contacts 19 and 29. In this case, the control section 300 may operate the heating means 22 and the like only while the attachment state in which the head section 20A is attached to the main body section 10A is detected.

Although each embodiment has been described in detail above, it is not limited to a specific embodiment, and various modifications and changes can be made within the scope of the claims. It is also possible to combine all or a plurality of the components of the embodiments described above.

For example, in the above-described first embodiment (the same applies to the second embodiment), the heating means 22 is disclosed as an example of an action means for applying a specific action to the user's target region 900 that the head portion 20 contacts. The action means for applying a specific action to the target region 900 is not limited to the heating means 22. That is, in place of or in addition to the heating means 22, a working means capable of imparting a specific action other than the heating action may be used. In this case, the effecting means may comprise a pair of electrodes similar to the pair of electrodes 221 for generating electrical stimulation at the target region 900 of the user. In this case as well, the operating means can be operated by receiving power from the power supply to the counter electrode in the manner described above. In this case, the specific action based on electrical stimulation is a heating action by high frequency, an action related to electrical muscle stimulation (EMS), an action related to iontophoresis, an action related to ion extraction, or any combination thereof. may include. In this case, EMS is advantageous in that it can tighten the target region 900 and take care of sagging. Further, ion derivation is advantageous in that it can remove dirt from skin pores at the target site 900, and ion introduction is advantageous in that it can moisturize the skin at the target site 900. Such specific action is suitable for skin care after shaving.

Furthermore, in the second embodiment (the same applies to the first embodiment) described above, by supplying electrical energy from the main body section 10A to the head section 20A via the transmission means 191A and the transmission means 294A, electric heat, vibration, Although effective skin treatments such as light and electrical stimulation can be performed, the energy supplied is not limited to electrical energy. Thermal energy or the like may be supplied instead of electrical energy. Further, the electrical connection structure realized through the electrical contacts 19 and 29 described above allows sensor information (electrical signals) from various sensors that may be provided in the head portion 20A to be transmitted to the main body portion 10A. It may also be used as a communication line for supplying data. In this case, the various sensors that may be provided in the head section 20A include a temperature sensor (for example, the temperature measuring means 72 described in the second embodiment), a humidity sensor, and an image sensor (for example, an image sensor for measuring the condition of the skin, etc.). sensors), etc. Further, the electrical connection structure realized through the electrical contacts 19 and 29 described above may be implemented using other elements (other than the light irradiation unit 70A, other than the light irradiation unit 70A, which are powered by electric power) that may be provided in the main body 10A. It may also be used as a power supply line to In this case, the other elements may be a Peltier element, a communication module, or the like.

Further, in the above-described second embodiment (the same applies to the first embodiment), the electric shaver 1A is an example of a skin treatment device, but as described above, it is also applicable to other skin treatment devices such as a facial beauty device. For example, in the case of a facial beauty device, a head section corresponding to the head section 20A may be provided with a plurality of electrodes for applying various output waveforms to the skin instead of or in addition to the cutter unit 21A. In this case, the electrical connection structure according to the second embodiment described above may be applied to the electrical connection structure between the plurality of electrodes and the main body portion 10A. In this case, some or all of the plurality of electrodes may be removably fixed to a holder similar to the shaver holder 232A by a retaining ring similar to the cutter unit retaining ring 223A.

1, 1A Electric shaver 10 Main body 11 Electric motor 12 Battery 13 Shaft member 15 User interface 19 Electric contacts (an example of contact elements)
191A Transmission means (an example of a conductive spring element, an example of a first spring element)
20, 20A Head parts 21, 21A Cutter unit 22 Heating means 29 Electrical contact 294A Transmission means (an example of a conductive spring element, an example of a second spring element)
70, 70A Light irradiation part 230 Base part 2301 Rotating shaft part 2302 Opening/closing shaft 231, 231A Main holder part (an example of the head main body part)
2310 Opening 2314 Rotating shaft support (an example of the second swing support mechanism)
232, 232A Shaver holder (an example of the second holder part)
2321 Stopper portion 2324 Peripheral wall 2131 Outer blade portion 21311 Contact surface portion 21312 Peripheral wall portion 2132 Inner blade portion 21321 Cutter blade 221 Electrode 224 Frame portion 300 Control portion 67A Second connection means (an example of the first swing support mechanism)
670 Contact holder (an example of the first holder part)
90 Wiring structure 94A Current-carrying spring (an example of a conductive spring element, an example of a third spring element)
94B Current-carrying spring (an example of a conductive spring element, an example of a third spring element)
900 Target area 901 Hair 902 Shaving gel

Claims (11)

The main body and
a head part that can contact a user's target area;
a mechanical connection structure that mechanically connects the main body portion and the head portion in a detachable manner;
comprising an electrical connection structure that electrically connects the main body part and the head part ,
The skin treatment device, wherein the mechanical connection structure includes a support mechanism that supports the head section so as to be displaceable with respect to the main body section . The skin treatment device according to claim 1, wherein the main body portion and the head portion realize supply of energy or signals via the electrical connection structure. The skin treatment device according to claim 1, wherein the electrical connection structure is electrically disconnected when the head section is detached from the main body section. The skin treatment device according to claim 1, wherein the electrical connection structure includes a stretchable, conductive spring element. The main body and
a head part that can come into contact with a user's target area;
a mechanical connection structure that mechanically connects the main body portion and the head portion in a detachable manner;
an electrical connection structure that electrically connects the main body portion and the head portion,
The mechanical connection structure includes a first swinging support mechanism that swingably supports the head section relative to the main body section. The electrical connection structure is configured such that, in a state where the head portion is attached to the main body portion, even if the head portion swings relative to the main body portion via the first swing support mechanism, the main body portion The skin treatment device according to claim 5, wherein an electrical connection state between the part and the head part is maintained. The electrical connection structure is
a first expandable and contractible electrically conductive spring element provided in the main body;
a contact element provided on the main body and connected to one end of the first spring element,
The first swing support mechanism includes a first holder part that is swingably supported with respect to the main body part,
The first holder section movably supports the contact element along the axial direction of the first spring element, and is biased by the first spring element toward one side in the axial direction of the first spring element. The skin treatment device according to claim 6. The electrical connection structure includes a second expandable and contractible electrically conductive spring element provided in the head portion,
8. The contact element according to claim 7, wherein one end of the first spring element in the axial direction is connected to the second spring element when the head part is attached to the main body part. Processing equipment. The main body and
a head part that can contact a user's target area;
a mechanical connection structure that mechanically connects the main body portion and the head portion in a detachable manner;
comprising an electrical connection structure that electrically connects the main body part and the head part,
The head section includes a head main body section and a second holder section that holds an operating section that operates based on electric power,
further comprising a second swing support mechanism that swingably supports the second holder part with respect to the head main body part,
The electrical connection structure includes a connection structure that electrically connects the main body portion and the operating portion,
The electrical connection structure prevents electrical connection between the main body part and the operating part even when the second holder part swings with respect to the head main body part via the second swing support mechanism. A skin treatment device that maintains a connection state. The electrical connection structure includes a third expandable and contractible electrically conductive spring element;
The skin treatment device according to claim 9, wherein one end is connected to the head main body part and the other end is connected to the operating part held by the second holder part. The skin treatment device according to claim 1, wherein a plurality of types of the head portion are prepared in such a manner that each type has a different function or effect on the skin.