Skin treatment device

Abstract

A skin treatment device is disclosed, which has a head capable of contacting a target site of a user, the head having an electrically driven cutter unit capable of cutting hair when in operation, and an action mechanism configured to apply a specific action to the target site of the user contacted by the cutter unit based on power supplied from a power source. The action mechanism includes, for example, a heating element that generates heat by flowing a direct current and / or a pair of electrodes that generate an electric stimulus.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to a skin treatment device. BACKGROUND

[0002] A skin treatment device in the form of an electric shaver provided with an ion introduction device at a head is known.

[0003] PRIOR ART DOCUMENTS

[0004] PATENT DOCUMENTS

[0005] Patent Document 1: Japanese Patent Application Laid-Open No. 2010-510821 SUMMARY

[0006] PROBLEMS TO BE SOLVED BY THE INVENTION

[0007] However, in a skin treatment device such as an electric shaver, if a specific action can be applied to a target site when the head contacts the target site of a user, an effect corresponding to the specific action (for example, an effect of improving the hair removal efficiency of shaving, or an appropriate care effect on the skin after shaving) can be expected.

[0008] Therefore, an object of the present disclosure is to provide a skin treatment device capable of applying a specific action to a target site.

[0009] SOLUTION TO PROBLEM

[0010] According to one aspect of the present disclosure, there is provided a skin treatment device including a head capable of contacting a target site of a user,

[0011] The above head includes:

[0012] an electrically driven cutter unit; and

[0013] an action mechanism that applies a specific action to the target site of the user contacted by the head based on electric power supplied from a power source.

[0014] EFFECTS OF THE INVENTION

[0015] According to the present disclosure, a skin treatment device capable of applying a specific action to a target site can be obtained. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a front view briefly showing an example of an electric shaver of Embodiment 1.

[0017] Figure 2 is a brief configuration diagram illustrating a preferred example of the heating mechanism of Embodiment 1.

[0018] Figure 2Ais a diagram showing an example of an electrical system in the main body portion of Embodiment 1.

[0019] Figure 3 is an explanatory diagram of the heating effect of the electric shaver shown in

[0020] Figure 4 is a brief flowchart showing an example of the processing performed by the control portion of Embodiment 1.

[0021] Figure 5 is a brief flowchart showing another example of the processing performed by the control portion of Embodiment 1.

[0022] Figure 6 is an exploded perspective view of the head portion as a whole of Embodiment 1.

[0023] Figure 7 is an exploded perspective view of a part of the head portion of Embodiment 1.

[0024] Figure 8 is a perspective view showing the main holder portion of Embodiment 1 as a whole.

[0025] Figure 9 is Figures 6-8 an explanatory diagram of the heating effect of the electric shaver shown in (1).

[0026] Figure 10 is Figures 6-8 an explanatory diagram of the heating effect of the electric shaver shown in (2).

[0027] Figure 11 is Figures 6-8 an explanatory diagram of the heating effect of the electric shaver shown in (3).

[0028] Figure 12 is a plan view briefly showing the thin film heater of Embodiment 1.

[0029] Figure 13 is a diagram showing an example of the wiring configuration in the head portion of Embodiment 1.

[0030] Figure 14 is a diagram showing an example of the wiring configuration in the head portion of Embodiment 1.

[0031] Figure 15 is a perspective view showing the held portion of the base portion of Embodiment 1.

[0032] Figure 16 is a perspective view of the head portion of the electric shaver of Embodiment 2.

[0033] Figure 17 is another perspective view of the head portion of the electric shaver of Embodiment 2.

[0034] Figure 18 is a perspective view of the base of the electric shaver of Example 2.

[0035] Figure 19 is an explanatory view of the wiring configuration of the present embodiment of Example 2.

[0036] Figure 19A is a perspective view of the frame portion of Example 2, viewed from the lower side.

[0037] Figure 20 is a perspective view of the electric connection configuration of the electric shaver of Example 2.

[0038] Figure 21 is a perspective view of the feature portion of the shaver holder of Example 2, enlarged.

[0039] Figure 22 is a perspective view showing the configuration of the light irradiation portion and the like of the electric shaver of Example 2.

[0040] Figure 23 is an explanatory view of the disassembly method of the cutter unit of the electric shaver of Example 2.

[0041] Figure 24 is a perspective view of the frame portion of the electric shaver of Example 2.

[0042] Figure 25 is a perspective view showing the connection portion between the head portion and the main body portion of Example 2, from the lower side.

[0043] Figure 26 is a perspective view of the connection portion of the main body portion of Example 2.

[0044] Figure 26A is another perspective view of the connection portion of the main body portion of Example 2.

[0045] Figure 27 is a perspective view of the connection portion of the head portion of Example 2.

[0046] Figure 28 is a perspective view showing the second link mechanism of Example 2. DETAILED DESCRIPTION

[0047] Hereinafter, each embodiment will be explained in detail with reference to the drawings.

[0048] [Example 1]

[0049] Figure 1is a front view briefly showing an example of an electric shaver 1 as one mode of a skin treatment device of the present embodiment. Hereinafter, a user refers to a user of the electric shaver 1, and a target site of the user refers to any site that can be contacted with the electric shaver 1, typically, a site where a hair to be shaved exists. Also, hereinafter, a shaving efficiency refers to a shaving efficiency of the electric shaver 1.

[0050] As shown in Figure 1 , the electric shaver 1 includes a main body portion 10 and a head portion 20.

[0051] The main body portion 10 houses an electric motor 11, a battery 12. The electric motor 11 is a driving source that drives the electric shaver 1, and operates based on electric power from the battery 12. The electric motor 11 can also be implemented by a magnetic linear motor or the like. The battery 12 is a battery that can be charged from the outside, and functions as an internal power source. Also, in a modified example, the electric motor 11 can also operate using an external power source instead of or in addition to the internal battery 12.

[0052] Also, a user interface 15 that can be variously input by the user to the electric shaver 1 can be provided in the main body portion 10. Note that the user interface 15 can also include a mechanical button, a touch switch, or the like. Also, a trimmer (not shown) can be provided in the main body portion 10.

[0053] The head portion 20 is a mode that can be contacted with the target site of the user. The head portion 20 can be attached to and detached from the main body portion 10. In the case where the head portion 20 is attachable to and detachable from the main body portion 10, cleaning or the like of the head portion 20 becomes easy.

[0054] The head portion 20 can be supported so as to be displaceable with respect to the main body portion 10. In the case where the head portion 20 is displaceable with respect to the main body portion 10, the head portion 20 is easily brought into close contact with the target site of the user, and the shaving efficiency can be effectively improved. Also, the head portion 20 can be displaceable with respect to the main body portion 10 in a plurality of degrees of freedom. For example, the head portion 20 can be supported with respect to the main body portion 10 via a shaft member 13, in which case the head portion 20 can be inclined or rotated within a predetermined angle range about an arbitrary direction perpendicular to an axial direction of the shaft member 13. Also, a connection structure between the head portion 20 and the main body portion 10 can use a ball joint.

[0055] A cutter unit 21 and a heating mechanism 22 are provided in the head portion 20.

[0056] The cutter unit 21 is provided to the head 20 in a manner that contacts the target site of the user in a state where the head 20 contacts the target site of the user. That is, the cutter unit 21 forms a site in the head 20 that contacts the target site of the user. Further, in a usual use mode for shaving, the site in the head 20 that contacts the target site of the user can also be only the cutter unit 21.

[0057] The cutter unit 21 is electrically driven by the electric motor 11. The cutter unit 21 has a blade that can cut hair when in operation (driven). Therefore, if the cutter unit 21 operates in a state where the head 20 contacts the target site of the user, the cutter unit 21 can cut hair that can exist in the target site (i.e., shaving is achieved).

[0058] Further, the cutter unit 21 is electrically driven, and the movement mode is arbitrary. For example, the cutter unit 21 can be rotary, can be vibratory (linear vibration), or can be a combination thereof.

[0059] The heating mechanism 22 heats the target site of the user contacted by the cutter unit 21. The heating mechanism 22 heats the target site of the user contacted by the cutter unit 21, and thus can assist in a manner that the state of the target site of the user (particularly, the state of the hair) reaches a state suitable for shaving. For example, the heating mechanism 22 achieves the same effect as when the target site is heated by a steaming towel. Hereinafter, the effect of such a heating mechanism 22 is also referred to as a "warming effect".

[0060] The heating mechanism 22 operates based on the electric power from the battery 12. That is, the battery 12 generates a power supply voltage for the heating mechanism 22. Further, in a modified example, the heating mechanism 22 can also be able to operate using an external power source instead of the internal battery 12 or in addition to the battery 12.

[0061] The heating mechanism 22 is arbitrary as long as it is a structure that can heat the target site, and for example, can include a heating element (e.g., an electric heating wire) that flows a direct current to generate heat. In this case, the heating mechanism 22 can be in the form of a thin film heater, a nichrome heater, or the like.

[0062] Alternatively, the heating mechanism 22 can also be a mechanism that applies high frequency to the target site using a pair of electrodes 221. Further, the heating mechanism 22 can also be achieved by a mechanism that irradiates an electric wave such as a microwave (ultra-short wave) to the target site.

[0063] The heating mechanism 22 is preferably provided over a large range in the head 20 so as to be able to heat a large range in the target site in a state where the head 20 is in contact with the target site of the user. In this case, the heating mechanism 22 can also be configured to occupy a large portion of a portion of the head 20 that is in contact with the target site of the user, other than the cutter unit 21. For example, the heating mechanism 22 can also be provided around the cutter unit 21.

[0064] The heating mechanism 22 is preferably provided in the head 20 in a manner that does not obstruct the adhesiveness between the cutter unit 21 and the target site. For example, the heating mechanism 22 can be a structure that is slightly biased toward the main body portion 10 side with respect to the cutter unit 21 (refer to Figure 1 Δ1). Thereby, it is possible to reduce the likelihood of a reduction in the adhesiveness between the cutter unit 21 and the target site due to the heating mechanism 22.

[0065] Figure 2 is a schematic configuration diagram that illustrates a preferred example of the heating mechanism 22. Figure 2A is a schematic diagram that illustrates an example of the electrical system in the main body portion 10. Figure 2 is a schematic diagram that illustrates an example of the electrical system in the main body portion 10. Figure 3 is an explanatory diagram of the principle of the warming effect, and is a cross-sectional view that schematically illustrates an electric field (high-frequency current) that is generated in the target site 900 when a high-frequency voltage is applied. Figure 3 in which three hairs 901 of the target site 900 are schematically illustrated. Figure 3 in which the case where an electric field is generated in the target site 900 by the application of a high-frequency voltage is schematically illustrated by a broken line E.

[0066] As Figure 2 illustrated, the heating mechanism 22 preferably includes the pair of electrodes 221, and applies a high-frequency voltage to the target site 900 of the user via the pair of electrodes 221. In this case, an electric field of a high frequency is formed in the target site 900 via the pair of electrodes 221, and warming by dielectric heating and / or Joule heat is achieved in the target site 900.

[0067] In the case of using such a heating mechanism 22, an electric field of a high frequency is able to act on a deeper portion of the target site 900 (a portion closer to the hair follicles than the surface). Therefore, the hair follicles are able to be effectively opened, and heat is also transmitted to the hair roots, and the hairs 901 are able to be softened. In this way, based on the application of a high-frequency voltage to the pair of electrodes 221 to perform warming, it is easy to effectively bring the state of the target site 900 of the user (particularly, the state of the hairs) to a state suitable for shaving, as compared to the case of using a heating element that generates heat by flowing a direct current. That is, it is possible to efficiently improve the warming effect.

[0068] Further, in a case where the heating mechanism 22 includes the pair of electrodes 221, one of the pair of electrodes 221 can also be realized by a constituent element (the outer blade portion 2131 described below) that forms the blade unit 21.

[0069] In Figure 2 the illustrated example, the pair of electrodes 221 on the head portion 20 side is electrically connected to the control portion 300 (and the battery 12 not shown in the drawing) on the main body portion 10 side via electrical connection between the electrical contact 19 on the main body portion 10 side and the electrical contact 29 on the head portion 20 side. In this case, it is not necessary to provide the control portion 300, the battery (for example, a battery different from the battery 12) on the head portion 20 side, and thus cleaning and the like of the head portion 20 can be performed. Further, the electrical contact 19 and the electrical contact 29 can be provided in pairs corresponding to the pair of electrodes 221. Figure 2

[0070] The electrical contact 19 and the electrical contact 29 can also be provided, for example, at a connection portion between the head portion 20 and the main body portion 10. For example, the electrical contact 19 on the main body portion 10 side can be provided in the holding portion or in the vicinity thereof in the main body portion 10 that holds the head portion 20 in a detachable manner, and the electrical contact 29 on the head portion 20 side can be provided in the held portion or in the vicinity thereof in the head portion 20. In this case, if the head portion 20 is connected (assembled) to the main body portion 10, the electrical contact 19 and the electrical contact 29 are electrically connected therewith, and if the head portion 20 is detached from the main body portion 10, the electrical contact 19 and the electrical contact 29 are electrically disconnected therewith.

[0071] Further, the electrical contact 19 and the electrical contact 29 can also be provided outside (at a position away from the holding portion described above) the connection portion between the head portion 20 and the main body portion 10. For example, the electrical contact 19 and the electrical contact 29 can also be realized by magnetic contacts that become in contact if the head portion 20 is connected (assembled) to the main body portion 10. Alternatively, energization between the electrical contact 19 and the electrical contact 29 can also be realized by non-contact energization (non-contact type energization). Alternatively, the electrical contact 19 can be omitted and the electrical contact 29 can be connected to an external power source. In this case, electrical connection of the electrical contact 29 to the external power source can also be realized by USB (Universal Serial Bus) connection or the like.

[0072] In the present embodiment, as Figure 2A indicated in the drawing, the control portion 300 can be electrically connected to the battery 12 in a relationship in parallel with the motor 11. In this way, the heating mechanism 22 can be caused to operate using electric power of the battery 12 that is a power source for the electric motor 11. Further, Figure 2A In the present embodiment, the switch SW is a shaving switch (one element of the user interface 15) that turns on the electric motor 11.

[0073] Figure 4 ​is a brief flowchart showing an example of the process executed by the control section 300.

[0074] In Figure 4 the example shown, the heating mechanism 22 always operates in conjunction with the operation of the cutter unit 21. Specifically, if the shaving switch (not shown) is turned on (step S400), the supply of electric power to the electric motor 11 and the control section 300 is started. In this case, if the cutter unit 21 is rotated by the operation of the electric motor 11, the control section 300 starts to apply a high-frequency voltage to the pair of electrodes 221 of the heating mechanism 22 (step S402). In this case, the user can operate the heating mechanism 22 when shaving with the cutter unit 21 without performing a special operation for the heating mechanism 22, and the operability is good. Further, if the shaving switch (not shown) is turned off (step S404), the supply of electric power from the battery 12 is cut off, and the electric motor 11 and the heating mechanism 22 are stopped. That is, the cutter unit 21 is stopped due to the stop of the electric motor 11, and the application of the high-frequency voltage to the pair of electrodes 221 of the heating mechanism 22 is stopped.

[0075] Further, in Figure 4 the example shown, the operation of the heating mechanism 22 is started at substantially the same timing as the start of the operation of the electric motor 11, but a deviation can be intentionally provided between the start timing of the operation of the electric motor 11 and the start timing of the operation of the heating mechanism 22. For example, the start timing of the operation of the heating mechanism 22 can be intentionally made earlier than the start timing of the operation of the electric motor 11 so as to achieve shaving at a target site after warming.

[0076] Figure 5 is a brief flowchart showing another example of the process executed by the control section 300.

[0077] In Figure 5 the example shown, the heating mechanism 22 can operate independently of the operation of the cutter unit 21. Specifically, in step S500, the control section 300 determines whether or not a start condition of the operation of the heating mechanism 22 is satisfied. The start condition of the operation of the heating mechanism 22 is arbitrary and can be various. For example, the start condition of the operation of the heating mechanism 22 can be satisfied by turning on a heating switch (not shown). In such a structure, in the case where the heating switch (not shown) is provided separately from the shaving switch (the switch SW, refer to FIG. 1), the heating mechanism 22 can operate independently of the electric motor 11 which operates by turning on the shaving switch. Figure 2

[0078] ​As for the control section 300, if the heating mechanism 22 starts to operate because the operating start condition of the heating mechanism 22 is satisfied (Yes in step S500), then thereafter, it is determined whether or not the operating end condition of the heating mechanism 22 is satisfied (step S502). The operating end condition of the heating mechanism 22 is arbitrary and can be various. For example, the operating end condition of the heating mechanism 22 can also be satisfied by turning off a heating switch (not shown). If it is the operating end condition of the heating mechanism 22 (Yes in step S504), then the control section 300 stops applying the high-frequency voltage to the pair of electrodes 221 of the heating mechanism 22 (step S506).

[0079] Alternatively, in other embodiments, various action modes can also be provided. For example, the various action modes can include a single shaving mode in which only the electric motor 11 operates, a shaving and heating mode in which both the electric motor 11 and the heating mechanism 22 operate, and a single heating mode in which only the heating mechanism 22 operates.

[0080] Also, in other embodiments, the head 20 can be provided with a temperature sensor that detects the temperature of the heating mechanism 22 or the target site, and in this case, the control section 300 can control the heating mechanism 22 based on the temperature information from the temperature sensor. For example, the control section 300 can control the heating mechanism 22 in such a manner that the temperature indicated by the temperature information from the temperature sensor coincides with a predetermined target value. In this case, the predetermined target value can be fixed, can be one selected from among a plurality of levels by the user, and can be adjustable (customized) by the user.

[0081] Also, in other embodiments, a current sensor can also be provided in the head 20 or the main body 10. In this case, in the case where the temperature or the current exceeds a predetermined threshold value, the heating degree of the heating mechanism 22 can be reduced or even stopped, and conversely, in the case where it is lower than another threshold value, the heating degree of the heating mechanism 22 can be increased. The temperature sensor or the current sensor can be able to detect the case where a foreign object is attached to the head 20, and in the case where the desired skin improvement cannot be obtained, the operation degree of the electric shaver 1 can be reduced or stopped.

[0082] Also, in other embodiments, the head 20 can be provided with a contact or non-contact sensor that detects contact or proximity with the target site, and in this case, the control section 300 can control the heating mechanism 22 based on the sensor information from the contact or non-contact sensor. For example, it can be that the control section 300 causes the heating mechanism 22 to operate only in the case where the sensor information from the contact or non-contact sensor indicates contact or proximity between the head 20 and the target site.

[0083] However, in this embodiment, since a heating mechanism 22 is provided in the head 20, a structure that can transmit the operating state of the heating mechanism 22 to the user is useful. In particular, in Figure 5 In a structure where the heating mechanism 22 and the electric motor 11 can operate independently, the convenience is increased if the operating status of the heating mechanism 22 can be transmitted to the user.

[0084] Therefore, in this embodiment, a light irradiation section 70 may also be provided on the head 20 (see reference). Figure 1 The light irradiation unit 70 can also be configured to irradiate light used for information transmission. For example, in the reference... Figure 5 In the case of having multiple operating modes as described above, the light irradiation unit 70 can also emit light in a different color for each operating mode. Furthermore, the light irradiation unit 70 can be implemented using a light-emitting diode or the like. Moreover, the light irradiation unit 70 can apply light stimulation to the skin according to the frequency of the irradiated light, and can also be configured to irradiate visible light so that the user can visually observe the condition of the skin being treated.

[0085] Alternatively, the light irradiation unit 70 may function as a heating mechanism different from the heating mechanism 22. Alternatively, the light irradiation unit 70 may irradiate light at a frequency that damages hair follicles. In this case, the on / off state of the light irradiation unit 70 and its output when on can be adjusted (customized) by the user.

[0086] Next, refer to Figure 6 and Figure 6 The accompanying diagrams provide a detailed explanation of one example of head 20.

[0087] Figure 6 This is an exploded 3D view of the head 20 as a whole. Figure 7 This is an exploded stereoscopic view of a portion of the head 20. Figure 8 This is a perspective view showing the main support unit 231. Figures 6-8 The figure shows the three orthogonal axes (X-axis, Y-axis, and Z-axis) in a right-handed coordinate system.

[0088] exist Figures 6-8 In the example shown, the head 20 includes a tool unit 21 and a heating mechanism 22, with three sets of tool units 21 and heating mechanisms 22 respectively. Furthermore, in modified examples, more than three sets can be provided (e.g., one set, two sets, four or more sets). Figures 6-8 In the example shown, as explained below, the paired electrodes 221 of the heating mechanism 22 are formed by an outer blade portion 2131 and a frame portion 224. Furthermore, the electrical connection between the three sets of heating mechanisms 22 and the control unit 300 (and the battery 12) can be achieved by... Figure 2The electric contacts 19, 29 shown are implemented in such a way that, in this case, six sets of electric contacts 19, 29 can be provided for the total of six electrodes 221 of the three sets of heating mechanisms 22, but preferably two sets of electric contacts 19, 29 are provided. In the case of two sets of electric contacts 19, 29, the six electrodes 221 of the three sets of heating mechanisms 22 act in unison. In this case, the electric contact configuration between the main body portion 10 and the head portion 20 can be simplified.

[0089] Also, in Figures 6-8 The head portion 20 shown in the example includes a base portion 230, a main holder portion 231 (an example of a holder portion), and a razor holder 232. In Figures 6-8 The razor holder 232 and the frame portion 224 described below are provided in three sets corresponding to the three sets of cutter units 21 in the example shown. In Figure 6 In the example shown, only one of the three sets is shown detached from the main holder portion 231. The three sets can each be the same structure, and hereinafter, an arbitrary one of the sets is described in the absence of a specific description.

[0090] The base portion 230 is connected to the main body portion 10 (see Figure 1 ) in a detachable manner. Also, as described above, the base portion 230 can be supported with respect to the main body portion 10 in such a way that the head portion 20 is displaceable with respect to the main body portion 10.

[0091] The base portion 230 has a rotating shaft portion 2301 that rotates in conjunction with the rotation from the electric motor 11. The rotating shaft portion 2301 can be provided for each of the cutter units 21. Therefore, in Figures 6-8 the example shown, the rotating shaft portion 2301 is provided three times. Also, the rotating shaft portion 2301 can be linked to the shaft member 13 (see Figure 1 ) that rotates integrally with the rotating shaft of the electric motor 11 in a power-transmissible manner via a power transmission mechanism (not shown) such as a gear.

[0092] The main holder portion 231 holds the cutter units 21 and the frame portion 224 via the razor holder 232. The main holder portion 231 has an opening portion 2310 in which the razor holder 232 is disposed.

[0093] The main holder portion 231 is mounted to the base portion 230. The main holder portion 231 can also be fixed with respect to the base portion 230, but is preferably supported with respect to the base portion 230 in a detachable or openable / closable manner. In Figures 6-8In the illustrated example, the main holder portion 231 is supported in a manner rotatable (openable and closable) about the opening and closing shaft 2302 of the base portion 230. In this case, the main holder portion 231 is rotated about the opening and closing shaft 2302 to be openable and closable with respect to the base portion 230. The closed state of the main holder portion 231 is the normal use state, and the open state of the main holder portion 231 can be achieved for the purpose of removing hair (cut hair) that is accumulated between the main holder portion 231 and the base portion 230.

[0094] The razor holder 232 is formed of resin or the like, for example. The razor holder 232 holds the cutter unit 21 and the frame portion 224. The razor holder 232 can have a stop portion 2321 that restricts movement of the cutter unit 21 to the negative side in the Y direction.

[0095] As Figure 6 As Figures 6-8 In the illustrated example, as Figure 8 As

[0096] In the present embodiment, as described above, the cutter unit 21 is supported by the main holder portion 231 via the razor holder 232. As Figure 7 As

[0097] The outer blade portion 2131 has a contact surface portion 21311 that is contactable with the target portion on the positive side in the Y direction. A plurality of fine holes into which hair can enter are formed in the contact surface portion 21311, and the edge portions of the holes form the outer blade. The contact surface portion 21311 has a function of causing hair to stand by putting the hair into the fine holes. If the hair stands, it becomes easy to cut the hair with the combination of the outer blade portion 2131 and the inner blade portion 2132. In Figures 6-8 In the illustrated example, the outer blade portion 2131 has a cylindrical peripheral wall portion 21312, and the positive side in the Y direction of the peripheral wall portion 21312 is covered by the contact surface portion 21311. The inner blade portion 2132 is housed on the inner diameter side of the cylindrical peripheral wall portion 21312.

[0098] In the present embodiment, the outer blade portion 2131 is a conductor formed of an electrically conductive material. Further, the outer blade portion 2131 forms a reference Figure 2 and Figure 3One of the paired electrodes 221 of the heating mechanism 22 described above. Specifically, the contact surface portion 21311 of the outer blade portion 2131 that contacts the target portion 900 forms a reference. Figure 2 and Figure 3 One of the paired electrodes 221 of the heating mechanism 22 described above.

[0099] Furthermore, the outer cutting edge 2131 can be formed from one or more materials, or from two or more materials. For example, the contact surface 21311 can be formed from a highly rigid conductive material such as metal, and the peripheral wall 21312 can be formed from an insulating material such as resin.

[0100] The inner cutting edge 2132 is connected to the rotating shaft 2301 in a non-rotatable manner and rotates integrally with the rotating shaft 2301. The inner cutting edge 2132 is driven to rotate by an electric motor 11 about the rotating shaft of the rotating shaft 2301. The inner cutting edge 2132 has a plurality of blades 21321 with cutting edges. The plurality of blades 21321 are arranged adjacent to the contact surface 21311 of the outer cutting edge 213 in the Y direction. In this case, if the inner cutting edge 2132 rotates, the hair 901 passing through the hole of the contact surface 21311 is cut off by the combination of the outer cutting edge and the blades 21321 of the inner cutting edge 2132.

[0101] The frame portion 224 forms an electrode ring surrounding the blade unit 21. That is, the frame portion 224 is disposed on the outer diameter side of the cylindrical peripheral wall portion 21312 in the outer blade portion 2131. As described above, the frame portion 224 is supported by the main support portion 231 via the shaver holder 232.

[0102] exist Figures 6-8 In the example shown, the frame portion 224 is a conductor and is formed of a conductive material. Specifically, the frame portion 224 is formed as shown in the reference... Figure 2 and Figure 3 The other side of the paired electrodes 221 of the heating mechanism 22 described above. That is, the contact surface portion 21311 of the frame portion 224 and the outer blade portion 2131 cooperates to form a reference. Figure 2 and Figure 3 The paired electrodes 221 of the heating mechanism 22 described above.

[0103] By utilizing the contact surface 21311 of the frame portion 224 and the outer blade portion 2131, the paired electrodes 221 of the heating mechanism 22 are realized, thereby enabling a heating effect to be applied to the entire range of the target area that is in contact with the contact surface 21311.

[0104] The frame portion 224 is slightly separated from the outer cutting edge portion 2131 in a manner that does not create an electrical short circuit between it and the outer cutting edge portion 2131.Figures 6-8 In the example shown, the frame portion 224 has an inner diameter larger than the outer diameter of the cylindrical peripheral wall portion 21312, and is separated in the radial direction with respect to the peripheral wall portion 21312. Also, the razor holder 232 has a ring-shaped peripheral wall 2324 that protrudes in the Y direction, and the peripheral wall 2324 is disposed in the radial direction between the frame portion 224 and the outer blade portion 2131. Thus, electrical short-circuiting between the frame portion 224 and the outer blade portion 2131 can be reliably prevented.

[0105] Figures 9-11 is Figures 6-8 The explanatory diagram of the warming effect of the electric shaver 1 of the example shown is a cross-sectional view of the front end portion (front end portion on the positive side in the Y direction) of the electric shaver 1, which is shown only schematically in relation to the target portion.

[0106] Figure 9 The state before the head portion 20 of the electric shaver 1 is about to come into contact with the target portion 900 is shown. Also, in Figure 9 In the example shown, the target portion 900 has many hairs 901 that are the objects of shaving, and is coated with a shaving gel 902. Also, instead of the shaving gel 902, a shaving foam, a toner, or the like can be used. With the shaving gel 902 or the like, the warming effect produced by the application of the high-frequency voltage can be efficiently enhanced. Also, the pores are expanded, and moisture penetrates the pores and the surrounding area, so that the hairs 901 become soft, and the hairs 901 are easily shaved (i.e., the shaving residue is reduced), and the effect is obtained. Also, by causing moisture to penetrate the target portion 900, so-called shaving irritation can be suppressed.

[0107] Figure 10 The state after the head portion 20 of the electric shaver 1 has just come into contact with the target portion 900 is shown. In Figures 6-8 In the example shown, the frame portion 224 is provided as the outer electrode 221, and the contact surface portion 21311 is provided as the inner electrode 221, and a high-frequency voltage is applied to the target portion 900. Also, Figure 10 In the example shown, the path of such a high-frequency current is schematically shown by an arrow R1000.

[0108] Figure 11 The state after the head portion 20 of the electric shaver 1 has come into contact with the target portion 900 and the heating mechanism 22 has operated is shown. Figure 11 In the example shown, the range of warming is schematically shown by a hatched area R11. In this way, according to Figures 6-8In the example shown, the high-frequency current is able to act throughout the entire range of the target site in contact with the contact surface portion 21311. As a result, the warming effect of the heating mechanism 22 is able to be efficiently imparted throughout a large range of the target site. Also, the electric warming effect of the high-frequency current based on the heating mechanism 22 is less likely to cause skin dryness compared to warming from the outside such as a heater or light irradiation, and a maintenance effect of skin moisture is also able to be expected.

[0109] Thus, according to Figures 6-8 In the example shown, with the electric shaver 1 having a structure that warms the target site 900, the warming effect is able to be efficiently imparted throughout a large range of the target site 900. As a result, the hair removal efficiency is able to be effectively improved.

[0110] Also, according to Figures 6-8 In the example shown, since one of the pair of electrodes 221 of the heating mechanism 22 is implemented by the outer blade portion 2131 (contact surface portion 21311) and the other of the pair of electrodes 221 is implemented by the frame portion 224, the heating mechanism 22 is able to be implemented with a small number of components. That is, with the outer blade portion 2131 being an existing component, the number of components for setting the heating mechanism 22 is able to be reduced.

[0111] Further, in Figures 6-8 In the example shown, one of the pair of electrodes 221 of the heating mechanism 22 is implemented by the entire contact surface portion 21311, but can also be implemented by only a portion of the contact surface portion 21311.

[0112] Also, likewise, the other of the pair of electrodes 221 of the heating mechanism 22 is implemented by the entire frame portion 224, but can also be implemented by a portion of the frame portion 224. For example, the frame portion 224 can also be formed by insert molding based on a resin and a metal material. In this case, the portion of the metal material forms the electrode 221.

[0113] Further, in Figures 6-8 Figure 1 In the above-described light irradiation portion 70 is provided to the periphery of the cutter unit 21, that is, the frame portion 224. Alternatively, the light irradiation portion 70 can also be provided outside the frame portion 224. Alternatively, the light irradiation portion 70 can also be provided to the end portion on the Y direction positive side of the peripheral wall 2324.

[0114] Also, in Figures 6-8 Figure 12 ​​The thin film heater 240 schematically shown in a plan view as another heating mechanism 22. In this case, the thin film heater 240 can also be arranged in the frame portion 224 in a manner not to obstruct the function of the frame portion 224 as the electrode 221. Alternatively, in this case, the pair of electrodes 221 can also be removed and the thin film heater 240 can function as the only heating mechanism 22. Further, in the case of using the thin film heater 240, the wiring from the battery 12 or the control portion 300 can also be referred to as the wiring 23. Figure 2 is arranged as described above.

[0115] Next, referring to Figure 13 and Figure 14 , an example of the wiring configuration 90 in the head 20 applicable in the example shown in Figures 6-8 will be described. Hereinafter, in the case of distinguishing the three tool units 21 respectively, the last digit of the symbol is noted as (1), (2), and (3) for distinction. Further, in the case of distinguishing the three tool units 21 respectively, the last digit of the symbol is noted as (1), (2), and (3) for distinction. Further, Figure 14 , one of the tool units 21 is shown in a state of being detached.

[0116] Figure 13 and Figure 14 are diagrams showing an example of the wiring configuration 90 in the head 20.

[0117] The wiring configuration 90 is an electrical connection configuration that realizes electrical connection between the pair of electrical contacts 29 and the pair of electrodes 221, as shown in Figure 2 . As shown in Figure 14 , the wiring configuration 90 has a contact holding portion 290 that holds the pair of electrical contacts 29. The contact holding portion 290 is detachable with respect to the contact holding portion on the main body portion 10 side, which is not shown. In this case, a magnetic contact using a magnet can also be realized. In a state where the contact holding portion 290 is attached to the contact holding portion on the main body portion 10 side, the pair of electrical contacts 29 and the pair of electrical contacts 19 (refer to Figure 2 ) are electrically connected.

[0118] The wiring configuration 90 includes a first wiring 91 (an example of the wiring) having one end engaged with one of the pair of electrical contacts 29 and a second wiring 92 having one end engaged with the other of the pair of electrical contacts 29. The other end of the first wiring 91 is engaged with one of the pair of electrodes 221, and the other end of the second wiring 92 is engaged with the other of the pair of electrodes 221.

[0119] As shown in Figure 13 , the first wiring 91 includes a first lead-out portion 910 and two first transition portions 911, 912 (examples of the wiring portion).

[0120] The first lead-out portion 910 leads from the outside to the inside of the main holder portion 231. As shown in Figure 14As shown in FIG. 9, one end of the outer side of the main holder portion 231 of the first lead-out portion 910 is engaged with one of the pair of electrical contacts 29, as shown in FIG. 10. Figure 13 As shown in FIG. 9, the other end of the inner side of the first lead-out portion 910 is engaged with the outer blade portion 2131 of one tool unit 21(1). Further, the first lead-out portion 910 can be engaged with the lower side (Y direction negative side) of the outer blade portion 2131.

[0121] As shown in FIG. 9, one end of the outer side of the main holder portion 231 of the first lead-out portion 910 is engaged with one of the pair of electrical contacts 29, as shown in FIG. 10. Figure 13 As shown in FIG. 9, the other end of the inner side of the first lead-out portion 910 is engaged with the outer blade portion 2131 of one tool unit 21(1). Further, the first lead-out portion 910 can be engaged with the lower side (Y direction negative side) of the outer blade portion 2131.

[0122] As shown in FIG. 9, one end of the outer side of the main holder portion 231 of the first lead-out portion 910 is engaged with one of the pair of electrical contacts 29, as shown in FIG. 10. Figure 13 As shown in FIG. 9, the other end of the inner side of the first lead-out portion 910 is engaged with the outer blade portion 2131 of one tool unit 21(1). Further, the first lead-out portion 910 can be engaged with the lower side (Y direction negative side) of the outer blade portion 2131.

[0123] As shown in FIG. 9, one end of the outer side of the main holder portion 231 of the first lead-out portion 910 is engaged with one of the pair of electrical contacts 29, as shown in FIG. 10.

[0124] Similarly, the second wiring 92 includes a second lead-out portion 920 and two second transition portions 921, 922.

[0125] The second lead-out portion 920 leads from the outside to the inside of the main holder portion 231. As shown in FIG. 9, one end of the outer side of the main holder portion 231 of the second lead-out portion 920 is engaged with one of the pair of electrical contacts 29, as shown in FIG. 10. Figure 14 As shown in FIG. 9, one end of the outer side of the main holder portion 231 of the first lead-out portion 910 is engaged with one of the pair of electrical contacts 29, as shown in FIG. 10. Figure 13 As shown in FIG. 9, the other end of the inner side of the first lead-out portion 910 is engaged with the outer blade portion 2131 of one tool unit 21(1). Further, the first lead-out portion 910 can be engaged with the lower side (Y direction negative side) of the outer blade portion 2131.

[0126] As shown in FIG. 9, one end of the outer side of the main holder portion 231 of the first lead-out portion 910 is engaged with one of the pair of electrical contacts 29, as shown in FIG. 10. Figure 13As shown, one end of the second transition portion 921 is engaged with the frame portion 224 around one of the cutter units 21(3), and the other end is engaged with the frame portion 224 around the other of the cutter units 21(2). In this way, the frame portion 224 around one of the cutter units 21(3) and the frame portion 224 around the other of the cutter units 21(2) are electrically connected via the second transition portion 921.

[0127] As shown, one end of the second transition portion 921 is engaged with the frame portion 224 around one of the cutter units 21(3), and the other end is engaged with the frame portion 224 around the other of the cutter units 21(2). In this way, the frame portion 224 around one of the cutter units 21(3) and the frame portion 224 around the other of the cutter units 21(2) are electrically connected via the second transition portion 921. Figure 13 As shown, one end of the second transition portion 921 is engaged with the frame portion 224 around one of the cutter units 21(3), and the other end is engaged with the frame portion 224 around the other of the cutter units 21(2). In this way, the frame portion 224 around one of the cutter units 21(3) and the frame portion 224 around the other of the cutter units 21(2) are electrically connected via the second transition portion 921.

[0128] In this way, the second wiring 92 electrically connects the other of the pair of electrical contacts 29 and the three frame portions 224 forming the other of the pair of electrodes 221, respectively, via the second lead-out portion 920 and the two second transition portions 921, 922. Thereby, the three frame portions 224 forming the other of the pair of electrodes 221 can be simultaneously electrified via the other of the pair of electrical contacts 29.

[0129] Figures 6-8 In addition, in the example shown in

[0130] Therefore, in the wiring configuration 90 shown in Figure 13 and Figure 14 In the wiring configuration 90 shown in

[0131] In the wiring configuration 90 shown in Figure 13 and Figure 14 ​In the wiring configuration 90 shown, the first transition portion 911 of the first wiring 91 is preferably configured so as to maintain the engaged state with one of the pair of electrodes 221 at both ends of the first transition portion 911 even in the case where the two cutter units 21 are displaced independently of each other with respect to the main holder portion 231. Specifically, the first transition portion 911 of the first wiring 91 is preferably flexible to an appropriate degree of slack so as to be able to absorb the independent displacement of the two cutter units 21 with respect to the main holder portion 231. For example, the first transition portion 911 can also be configured using an electric wire composed of a single wire or a twisted wire, a flat cable, a spring having electrical conductivity, or the like. Thus, even in the case where the two cutter units 21(1), (2) are displaced independently of each other in accordance with the concavities and convexities of the target portion 900 when the electric shaver 1 is used, it is possible to stably heat the skin of the target portion 900. The same applies to the first transition portion 912.

[0132] Further, the frame portion 224, unlike the cutter unit 21, is not able to be displaced with respect to the main holder portion 231, and thus the second wiring 92 can also be configured to have less slack or lower flexibility.

[0133] Also, according to the example shown in Figure 13 and Figure 14 , since the first transition portions 911, 912 and the second transition portions 921, 922 are provided, it is possible to realize the wiring configuration 90 that is effective for the pair of electrodes 221 that are respectively provided in correspondence with the three cutter units 21 even in the head portion 20 having the three cutter units 21.

[0134] Further, in the example shown in Figure 13 and Figure 14 , the pair of electrical contacts 29 on the head portion 20 side are held by the contact holding portion 290 that is different from the connecting portion between the head portion 20 and the main body portion 10, but are not limited thereto. For example, the pair of electrical contacts 29 on the head portion 20 side can also be provided in the connecting portion between the head portion 20 and the main body portion 10 as described above. For example, the pair of electrical contacts 29 on the head portion 20 side can also be provided in the holding portion 2304 of the base portion 230 shown in Figure 15 . In this case, the first lead-out portion 910 of the first wiring 91 and the second lead-out portion 920 of the second wiring 92 can also be led out to the base portion 230 using the rotation shaft portion 2301 or the like. In this case, a portion of the first lead-out portion 910 of the first wiring 91 and a portion of the second lead-out portion 920 of the second wiring 92 can also be implemented by a conductor portion that can be embedded in the base portion 230 by insert molding or the like.

[0135] Also, in the example shown in Figure 13 and Figure 14In the illustrated example, a portion of the first wiring 91 and a portion of the second wiring 92 can also be implemented by a conductor portion that can be embedded in the main holder portion 231 by insert molding or the like.

[0136] Also, in the present embodiment, the first wiring 91 and / or the second wiring 92 can also be composed of a metal wire made of stainless steel. Also, the first wiring 91 and / or the second wiring 92 can be plated with nickel or zinc on the surface. Also, the first wiring 91 and / or the second wiring 92 can be made difficult to corrode by a passivation film on the surface, and the surface of the stainless steel, which has a high resistance, is plated with nickel, which has a low resistance, so as to be difficult to rust and easy to pass electricity. Also, since it is possible to pass electricity on the premise of water washing, it is easy to design. Also, the electrical contact 19 and / or the electrical contact 29 can also be plated with stainless steel. The first wiring 91 and / or the second wiring 92 and the surface material of the electrical contact 19 and / or the electrical contact 29 can also be made the same material such as nickel. It is possible to prevent deterioration due to galvanic corrosion.

[0137] Also, in the present embodiment, an insulating film can be provided on the surface, and the separation distance between the wirings can be enlarged so as not to cause the first wiring 91A and the second wiring 92A to come into contact and electrically short-circuit. A wall can also be provided between the wirings to extend the creepage distance, and the head portion 20 as a whole can be made compact.

[0138] Also, in the present embodiment, it is also possible to configure the first wiring 91 and / or the second wiring 92 to have a larger insulating resistance than the insulating resistance between the frame portion 224 and the outer blade portion 2131. For example, the distance can be enlarged. Thus, even in the case where the first wiring 91 and the second wiring 92, the frame portion 224 and the outer blade portion 2131 are filled with a liquid such as water or a conductive material such as a gel, it is possible to make the current flow easily using the frame portion 224 and the outer blade portion 2131. For example, by configuring the first wiring 91 and the second wiring 92 to have an insulating resistance of 1 megaohm or more when dry and 100 ohms or more when filled with a gel, it is possible to make the battery 12 compact while ensuring high-frequency heating of the skin.

[0139] [Embodiment 2]

[0140] Next, referring to Figure 16 and Figure 16The following drawings describe an embodiment 2 that can be implemented instead of the above-described embodiment 1 as appropriate. In the following description of embodiment 2 and the drawings, the same reference numerals are sometimes assigned to the same constituent elements as those of the above-described embodiment 1, and the description thereof is omitted. Also, in the following description, the side of the head 20A closer to the user's skin (i.e., the positive side in the Y direction) is sometimes referred to as the "upper side" and the side farther from the skin (i.e., the negative side in the Y direction) is sometimes referred to as the "lower side" in the state of use of the electric shaver 1A.

[0141] Figure 16 FIG. 12 is a perspective view of the head 20A of the electric shaver 1A of the present embodiment, showing the cutter unit 21A and the shaver holder 232A in an exploded state. Figure 17 FIG. 13 is a perspective view of the head 20A of the electric shaver 1A of the present embodiment, showing one cutter unit 21A and the shaver holder 232A in a state where one cutter unit 21A and the shaver holder 232A are detached and in a cross-sectional view. Figure 18 FIG. 14 is a perspective view of the base 230A of the electric shaver 1A of the present embodiment. Figure 19 FIG. 15 is an explanatory view of the wiring configuration 90A of the present embodiment, and is a perspective view of the head 20A of the electric shaver 1A of the present embodiment as viewed from the lower surface side. Figure 19 In FIG. 15, the base 230 is shown in a state where it is removed. Figure 19A FIG. 16 is a perspective view of the frame portion 224A as viewed from the lower side, showing a part of the wiring configuration 90A. Figure 20 FIG. 17 is a perspective view of the electric connection configuration of the electric shaver 1A of the present embodiment. Figure 21 FIG. 18 is an enlarged perspective view of a characteristic portion of the shaver holder 232A. Figure 22 FIG. 19 is a perspective view showing the arrangement of the light irradiation portion 70A and the like of the electric shaver 1A of the present embodiment. Figure 23 FIG. 20 is an explanatory view of the method of detaching the cutter unit 21A of the electric shaver 1A of the present embodiment. Figure 24 FIG. 21 is a perspective view of the cutter unit holding ring 223A of the electric shaver 1A of the present embodiment.

[0142] In the present embodiment, as in the above-described embodiment, the main holder portion 231A of the head 20A holds the cutter unit 21A and the frame portion 224A in a swingable manner via the shaver holder 232A. Specifically, in the present embodiment, as in the shaver holder 232 of the above-described embodiment, the shaver holder 232A rotatably supports the cutter unit 21A in a swingable manner with respect to the head 20A. That is, in the present embodiment, the main holder portion 231A also has a rotation shaft support portion 2314 (see FIG. 14) extending in a direction perpendicular to the rotation shaft portion 2301 of the base 230A. The rotation shaft support portion 2314 rotatably supports the rotation shaft portion 2301 of the base 230A. Figure 17The second swing support mechanism 2310 supports the razor holder 232A in a rotatable manner about the rotation axis support portion 2314.

[0143] In addition, in the present embodiment, unlike the frame portion 224 of the above-described embodiment 1, the frame portion 224A is provided on the upper side surface of the outer peripheral portion of the razor holder 232A. The frame portion 224A may, for example, be fixed to the razor holder 232A by fitting or the like, or may be integrally formed by insert molding or the like.

[0144] Also, in the present embodiment, like the above-described embodiments, the outer blade portion 2131 (contact surface portion 21311) of the cutter unit 21A and the frame portion 224A form a pair of electrodes 221 related to the heating mechanism 22 (an example of an operation portion).

[0145] In the present embodiment, the head portion 20A accommodates a wiring configuration 90A that realizes energization to the pair of electrodes 221. The wiring configuration 90A is an electrical connection configuration that realizes electrical connection between the pair of electrical contacts 29 and the pair of electrodes 221. Figure 2

[0146] Specifically, the wiring configuration 90A includes a first wire 91A having one end engaged with one of the pair of electrical contacts 29 and a second wire 92A having one end engaged with the other of the pair of electrical contacts 29. The other end of the first wire 91A is engaged with one of the pair of electrodes 221, and the other end of the second wire 92A is engaged with the other of the pair of electrodes 221.

[0147] As shown in FIG. 9, the first wire 91A includes a first lead-out portion 910A and two first transition portions 911A and 912A. Figure 19

[0148] The first lead-out portion 910A is disposed on the inner side of the main holder portion 231A (toward the base portion 230A side). As shown in FIG. 9, the first lead-out portion 910A is engaged with the first electrode 291A, and one end of the first electrode 291A is electrically connected to one of the pair of electrical contacts 29. Also, as shown in FIG. 9, the other end of the first lead-out portion 910A is electrically connected to the outer blade portion 2131 (refer to FIG. 10) of one of the cutter units 21A (1). At this time, the first lead-out portion 910A can be electrically connected to the pressure plate 2134A disposed on the lower side of the outer blade portion 2131 of one of the cutter units 21A (1) via the energization spring 94A (described below). Figure 19 Figure 19 Figure 17

[0149] As shown in FIG. 9, the first wire 91A includes a first lead-out portion 910A and two first transition portions 911A and 912A. Figure 19 ​​​​​As shown, one end of the first transition section 911A is electrically connected to the outer cutting edge 2131 of a tool unit 21A(1) via an energized spring 94A (hereinafter), and the other end is electrically connected to the outer cutting edge 2131 of another tool unit 21A(2) via an energized spring 94A (hereinafter). In this way, the outer cutting edge 2131 of one tool unit 21A(1) and the outer cutting edge 2131 of another tool unit 21A(2) are electrically connected via the first transition section 911A.

[0150] like Figure 19 As shown, one end of the first transition section 912A is electrically connected to the outer cutting edge 2131 of another cutting tool unit 21A(2) via an energized spring 94A (hereinafter), and the other end is electrically connected to the outer cutting edge 2131 of yet another cutting tool unit 21A(3) via an energized spring 94A (hereinafter). In this way, the outer cutting edge 2131 of another cutting tool unit 21A(2) and the outer cutting edge 2131 of yet another cutting tool unit 21A(3) are electrically connected via the first transition section 912A.

[0151] In this way, the first wiring 91A connects one of the paired electrical contacts 29 to the outer cutting edge 2131 of each of the three tool units 21A forming the paired electrodes 221 via the first lead-out portion 910A and the two first transition portions 91A and 912A. Thus, the three tool units 21A forming the paired electrodes 221 can be energized simultaneously via the paired electrical contacts 29.

[0152] Similarly, the second wiring 92A includes a second lead-out portion 920A and two second transition portions 921A and 922A.

[0153] The second lead-out portion 920A is disposed inside the main support portion 231A (towards the base portion 230A). For example... Figure 19 As shown, the second lead-out 920A is coupled to the second electrode 292A, one end of which is electrically connected to the other of the paired electrical contacts 29. Furthermore, as... Figure 19 As shown, the other end of the second lead-out portion 920A is electrically connected to the frame portion 224A surrounding a tool unit 21A (3). At this time, as... Figure 19A As shown, the second lead-out portion 920A can be electrically connected to the electrode portion 940 on the lower side of the frame portion 224A arranged around a tool unit 21A (1) via the energized spring 94B (hereinafter referred to as the energized spring 94B).

[0154] like Figure 19As shown, one end of the second transition portion 921A is electrically connected to the frame portion 224A around one tool unit 21A (3) via an electrically conductive spring 94B (described later), and the other end is electrically connected to the frame portion 224A around the other tool unit 21A (2) via an electrically conductive spring 94B (described later). In this way, the frame portion 224A around one tool unit 21A (3) and the frame portion 224A around the other tool unit 21A (2) are electrically connected via the second transition portion 921A.

[0155] As shown, one end of the second transition portion 921A is electrically connected to the frame portion 224A around one tool unit 21A (3) via an electrically conductive spring 94B (described later), and the other end is electrically connected to the frame portion 224A around the other tool unit 21A (2) via an electrically conductive spring 94B (described later). In this way, the frame portion 224A around one tool unit 21A (3) and the frame portion 224A around the other tool unit 21A (2) are electrically connected via the second transition portion 921A. Figure 19

[0156] In this way, the second wiring 92A electrically connects the other of the pair of electrical contacts 29 to 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 and 922A, respectively. Thereby, the three frame portions 224A forming the other of the pair of electrodes 221 can be simultaneously electrified via the other of the pair of electrical contacts 29.

[0157] Further, in the present embodiment, as in the above-described embodiment 1, the first wiring 91A and / or the second wiring 92A can also be composed of a metal wire made of stainless steel. Also, the first wiring 91A and / or the second wiring 92A can be plated with nickel or zinc on the surface. Also, the first wiring 91A and / or the second wiring 92A can be made difficult to corrode by a passivation film, and the surface of the stainless steel, which is high in electrical resistance, can be plated with nickel, which is low in electrical resistance, so as to be difficult to rust and easy to electrify. Also, since electrification is possible even with water washing as a premise, design is easy. Also, the electrical contacts 19 and / or the electrical contacts 29 can be plated with stainless steel. The first wiring 91A and / or the second wiring 92A and the surface material of the electrical contacts 19 and / or the electrical contacts 29 can be made of the same material such as nickel. Deterioration due to galvanic corrosion can be prevented.

[0158] Also, in the present embodiment, an insulating film can be provided on the surface, and the separation distance between the wirings can be enlarged so as not to cause electrical short-circuiting in which the first wiring 91A and the second wiring 92A come into contact with each other. A wall can be provided between the wirings to extend the creepage distance, and the head portion 20A as a whole can be made compact.

[0159] ​Also in the present embodiment, the insulation resistance of the first wiring 91A and / or the second wiring 92A can be configured to be larger than the insulation resistance between the frame portion 224A and the outer blade portion 2131. For example, the distance can be expanded. Thus, even if the first wiring 91A and the second wiring 92A, the frame portion 224A and the outer blade portion 2131 are filled with a liquid such as water, a gel, or the like, or a conductive material such as a gel, the current can be made to easily flow by the frame portion 224A and the outer blade portion 2131. For example, by being configured such that the insulation resistance of the first wiring 91A and the second wiring 92A is 1 mega-ohm or more when dry, and 100 ohm or more when filled with a gel, the battery 12 can be made compact, and high-frequency heating of the skin can be ensured.

[0160] Here, as described above, the wiring structure 90A of the present embodiment includes the current-carrying springs 94A, 94B (examples of the stretchable conductor element) at the end portions of the first transition portion 911A, the second transition portion 921A, and the like. The current-carrying springs 94A, 94B are in the form of a coil spring, and can be stretchable in the direction along the rotation axis portion 2301. One end of the current-carrying spring 94A is electrically connected to the outer blade portion 2131 in the tool unit 21A, and the other end is electrically connected to the electrical contact 29. One end of the current-carrying spring 94B is electrically connected to the frame portion 224A, and the other end is electrically connected to the electrical contact 29 via the wiring spring 954A and the like described below.

[0161] Further, the current-carrying springs 94A, 94B do not need to directly abut against the lower surface of the outer blade portion 2131 in the tool unit 21A and the lower surface of the frame portion 224A, and can be electrically connected via other members (conductor members). For example, as shown in FIG. 19, the current-carrying spring 94A can be electrically connected to the outer blade portion 2131 via the pressure plate 2134A of the conductor. Also, as shown in FIG. 20, the current-carrying spring 94B can be electrically connected to the frame portion 224A via the electrode portion 940. Figure 19 Figure 19A As described above, the current-carrying spring 94B can be electrically connected to the frame portion 224A via the electrode portion 940.

[0162] The current-carrying springs 94A, 94B are configured and arranged so as to be able to maintain a state of being electrically connected to the outer blade portion 2131 in the tool unit 21A and the frame portion 224A in any rotational state of the tool unit 21A with respect to the main holder portion 231A.

[0163] ​In this case, even if the shaver holder 232A rotates relative to the main support portion 231A, the energizing springs 94A and 94B extend and retract accordingly, thereby maintaining the electrical connection between the frame portion 224A and the outer blade portion 2131, which serve as the paired electrodes 221, and the energizing springs 94A and 94B. Thus, in this embodiment, even if the shaver holder 232A (and its corresponding frame portion 224A and outer blade portion 2131) rotates in any state relative to the main support portion 231, the electrical contact 29 on the head 20A side can maintain the conduction state between the electrical contact 29 and the paired electrodes 221 (frame portion 224A and outer blade portion 2131).

[0164] like Figure 18 and Figure 19 As shown, the wiring structure 90A also includes a torsion spring 950A for a conductor disposed around the opening / closing shaft 2302. The torsion springs 950A are arranged in pairs, each with one end electrically connected to the first electrode 291A and the second electrode 292A described above. Furthermore, as... Figure 20 As shown, the other end of the torsion spring 950A is connected to the electrical contact 29 (the transmission mechanism 294A described below). According to this wiring configuration 90A, as... Figure 19 As shown, the wiring structure 90A is essentially entirely disposed inside the head 20A (i.e., on the base 230A side of the main support portion 231A). Therefore, when the head 20A is open, as... Figure 18 As shown, this results in a state where the wiring configuration 90A is essentially not configured on the base 230A. Furthermore, it is not necessary to refer to... Figure 14 The component is like the contact holding part 290 in Embodiment 1 described above.

[0165] Furthermore, within the base 230A, such as Figure 22 The light irradiation section 70A and the wiring structure 90B that powers the temperature measuring unit 72A are arranged on the base 230A as shown. Figure 20 (A portion of it is shown in the image).

[0166] Also, in the present embodiment, a tool unit holding ring 223A is provided to the outer peripheral portion of the tool unit 21A. The tool unit holding ring 223A has a function of holding the tool unit 21A to the head 20A in a detachable manner. The tool unit holding ring 223A is engaged with the tool unit 21A from the upper side in a manner of sandwiching the tool unit 21A between the shaving blade holder 232A, so that the arrangement of the wiring structure 90A within the main holder portion 231A becomes easy. The tool unit holding ring 223A is arranged to the outer peripheral side of the tool unit 21A (the outer peripheral side of the cylindrical peripheral wall portion 21312 of the outer blade portion 2131), and holds the tool unit 21A to the shaving blade holder 232A from the upper side. The tool unit holding ring 223A can be press-fitted to the outer peripheral portion of the tool unit 21A, or can be integrally formed by insert molding. In the case where the tool unit holding ring 223A is integrally formed with the tool unit 21A, the detachment of the tool unit 21A with respect to the head 20A becomes easy.

[0167] Here, in the existing electric shaver, at the time of detachment for cleaning or replacement of the tool unit 21A, the tool unit 21A is detached toward the inner side of the head 20A. In contrast, in the present embodiment, the arrangement is made in the inside of the head 20A (i.e., within the main holder portion 231A) in a manner that the user does not mistakenly contact the tool unit 21A and the energization springs 94A, 94B that energize the heating mechanism 22. At the time of cleaning or replacement by detaching the tool unit 21A from the main holder portion 231A, the tool unit 21A is detached not toward the inner side of the main holder portion 231A (toward the base portion 230A side) where the energization springs 94A, 94B are arranged, but toward the outer side. Therefore, the main holder portion 231A does not become in an open state with respect to the base portion 230A, and the tool unit 21A can be detached from the shaving blade holder 232A (and from the corresponding main holder portion 231A). Thus, at the time of detachment of the tool unit 21A, the user's finger or the like does not come into contact with the energization springs 94A, 94B, so that the space within the narrow head 20A can be effectively used for arrangement of the energization springs 94A, 94B. As a result, the entire head 20A can be reduced in size, and the use convenience can be improved, and the above-mentioned skin treatment based on energization can be realized.

[0168] Also, in the present embodiment, the tool unit holding ring 223A is in a substantially cylindrical shape, and is configured to rotate coaxially with the tool unit 21A. The tool unit holding ring 223A is capable of functioning as a tool unit attachment / detachment mechanism when the tool unit 21A is detached from the main holder portion 231 for cleaning or replacement of the tool unit 21A. Specifically, the tool unit holding ring 223A is capable of rotating with respect to the head 20A between a fixed angle at which the tool unit 21A is fixed to the shaver holder 232A (and the head 20A corresponding thereto) and a detached angle at which the tool unit 21A is capable of being detached from the shaver holder 232A (and the head 20A corresponding thereto). Also, the tool unit holding ring 223A has a groove portion 2231A on the upper side (the side of the user's skin). The groove portion 2231A is configured to be capable of being rotated within the angle range of the fixed angle and the detached angle.

[0169] Here, in the existing electric shaver, the tool unit attachment / detachment mechanism used when detached for cleaning or replacement of the tool unit is configured on the inner side of the head (toward the base portion side) in proximity to the tool unit in a manner capable of being attached / detached from the inner side of the head. In contrast, in the present embodiment, the tool unit holding ring 223A is in a cylindrical shape that rotates coaxially with the tool unit 21A, and the tool unit 21A is fixed in a manner capable of being attached / detached from the upper side of the head 20A. Also, the tool unit holding ring 223A has the groove portion 2231A on the outer side (the upper side) of the head 20A. If the groove portion 2231A is rotated clockwise, the tool unit 21A is fixed, and if it is rotated counterclockwise, it is detached. Since the tool unit holding ring 223A is arranged to sequentially move away from the contact surface portion 21311 of the tool unit 21A, the surface (acting surface) of the upper side of the frame portion 224A, and the tool unit holding ring 223A when viewed from the side of the user's skin (the upper side), the groove portion 2231A of the tool unit holding ring 223A does not come into contact with the user's skin during abutment of the head 20A against the skin. Thus, it is possible to achieve an effect useful for the skin via the head 20A, and it is possible to prevent the tool unit 21A from being attached / detached by accident. Also, since the tool unit holding ring 223A is in a cylindrical shape and is thin, it is possible to narrow the space between the tool unit 21A and the frame portion 224A, and thus, in the case of passing electricity between the respective components, the electrical resistance is also reduced, and it is possible to maximize the useful effect. Thus, it is possible to reduce the size of the head 20A and improve the convenience of use, and it is possible to optimize the effect on the skin.

[0170] Also, the surface (acting surface) of the upper side of the frame portion 224A is preferably configured to have a height change in a gentle curved surface in a manner that further moves away from the user's skin from the inner side (the side in contact with the tool unit holding ring 223A) toward the outer side. Also, the slit 219 that guides the user's beard into the tool unit 21A extends from the contact surface portion 21311 toward the side surface of the tool unit 21A (see FIG. 6).Figure 17 The slit 219 can be a linear hole through which the beard enters. With the difference in height between the contact surface portion 21311 and the surface on the upper side of the frame portion 224A and the curved surface, even if the skin of the user has a complex curved surface, the beard of the user is easily introduced into the cutter unit 21, and the contact surface portion 21311 and the surface on the upper side of the frame portion 224A can be brought into abutment over a larger range of the skin. Thus, the head portion 20A can be reduced in size, and the use convenience can be improved, and the effect on the skin can be optimized. Further, it is more preferable that the difference in height between the contact surface portion 21311 and the surface on the upper side of the frame portion 224A be 0.2 mm or more and 2 mm or less, and the contact with the skin of the user can be made good, and effective shaving performance can be achieved.

[0171] Further, in the present embodiment, the cleaning mechanism 50 in the form of a brush that becomes the cleaning head portion 20A is provided, and a protrusion portion 52 that opposes the groove portion 2231A is provided at a portion of the cleaning mechanism 50, so that the cutter unit holding ring 223A is rotated from the fixed angle to the disengagement angle.

[0172] Here, in the existing electric shavers, a protrusion that easily receives a finger is sometimes provided at the frame portion, so that the head portion can be attached and detached from the inside. In contrast, in the present embodiment, since the protrusion portion 52 that opposes the groove portion 2231A of the cutter unit holding ring 223A is provided at the cleaning mechanism 50 for cleaning the cutter unit 21A, the protrusion portion 52 of the cleaning mechanism 50 is brought into abutment with the groove portion 2231A and rotated, and the cutter unit 21A can be attached and detached with respect to the head portion 20A. Thus, the protrusion for receiving the finger as in the existing attachment and detachment mechanism is not needed, and the head portion can be designed to be smaller, and further, the use convenience is also good.

[0173] Further, in the present embodiment, as shown in Figs. 21 and 22, the head portion 20A of the shaver holder 23A (and the cutter unit 21A and the frame portion 224A corresponding thereto) is supported in a rotatable manner, and the main holder portion 231A has a recess portion 206A on the upper surface thereof. Figure 17 Figure 21 As shown in Figs. 21 and 22, the main holder portion 231A of the head portion 20A of the shaver holder 23A (and the cutter unit 21A and the frame portion 224A corresponding thereto) is supported in a rotatable manner, and the main holder portion 231A has a recess portion 206A on the upper surface thereof. The recess portion 206A can have, for example, a V-shaped cross section when viewed in the side view. The recess portion 206A is provided between a plurality of shaver holders 232A adjacent in a direction perpendicular to the rotation axis of the rotation axis support portion 2314. The recess portion 206A is between each pair of adjacent shaver holders 232A, and the shaver holders 232A can each be tilted toward the adjacent shaver holder 232A and toward the main holder portion 231A (lower side). Further, a stop portion 2061A that regulates excessive rotation of the shaver holder 232A (and the cutter unit 21A and the frame portion 224A corresponding thereto) can be provided at the recess portion 206A.

[0174] ​Here, in the existing electric shavers, in the case where a shaver holder supporting a plurality of cutter units is provided in a manner that the plurality of cutter units can swing with respect to the head, the shape of the shaver holder side is changed so as to make the convex surface of the skin touched by the cutter units, such as the cheek, the chin, and the like. That is, generally, the shaver holder is designed to be thinned toward the adjacent cutter units, and the surface of the adjacent cutter units becomes a concave surface. However, since such a shaver holder has a portion that is locally thin, an electrode for skin treatment (for example, the electrode 221 like the frame portion 224A) cannot be provided. That is, even if the electrode 221 can be arranged at the thicker portion of the shaver holder, the electrode 221 cannot be arranged at the thinner portion. If the shaver holder is thickened in a manner that the electrode 221 can be arranged at the thinner portion, there is a problem that a gap is generated so that the shaver cannot shave, because the cutter units cannot match the convex surface of the skin. In contrast, in the present embodiment, the upper side surface of the main holder portion 231A of the head 20A has the recess 206A on the respective adjacent sides of the cutter units 21A in a manner that the head 20A is tilted, and thus the heating mechanism 22 such as the electrode 221 can be provided to the shaver holder 232A. As a result, the head 20A can be made compact, the convenience of use can be made good, and the effective skin treatment and the effective shaving performance described above can be achieved.

[0175] Next, the detailed contents of the mechanical connection structure and the electrical connection structure between the head 20A and the main body portion 10A of the present embodiment will be described together with the foregoing Figure 20 Figures 25-27 The mechanical connection structure and the electrical connection structure between the head 20A and the main body portion 10A of the present embodiment described below can also be applied to various skin treatment devices (for example, a beauty device or the like) other than the electric shaver 1A. Also, the wiring structure 90A described above with reference to Figure 19 and the like can also be applied to various skin treatment devices (for example, a beauty device or the like) other than the electric shaver 1A.

[0176] Figure 25 is a perspective view of the connection portion between the head 20A and the main body portion 10A of the electric shaver 1A of the present embodiment, which is shown from the lower side. Figure 26 is a perspective view of the connection portion of the main body portion 10A of the electric shaver 1A of the present embodiment, which is shown in a state that a part of the main body portion 10 is cut away. Figure 26 is a perspective view of the connection portion of the main body portion 10A of the electric shaver 1A of the present embodiment, which is shown in a state that a part of the main body portion 10 is cut away. Figure 26A is a perspective view of the connection portion of the main body portion 10A of the electric shaver 1A of the present embodiment, which is shown in a state that a part of the main body portion 10 is cut away. Figure 26 is a perspective view of the connection portion of the main body portion 10A of the electric shaver 1A of the present embodiment, which is shown in a state that a part of the main body portion 10 is cut away. Figure 27 is a perspective view of the connection portion of the head 20A of the electric shaver 1A of the present embodiment, which is shown in a state that a part of the head 20A is cut away. Figure 27 is a perspective view of the connection portion of the head 20A of the electric shaver 1A of the present embodiment, which is shown in a state that a part of the head 20A is cut away. Figure 28 ​is a perspective view showing the second coupling mechanism 67A.

[0177] In the present embodiment, the head 20A is coupled to the main body 10A in a rotatable manner by the first coupling mechanism 66A in a swingable manner with respect to the main body 10A. The first coupling mechanism 66A may, for example, rotatably couple the head 20A in a manner that enables rotation of the head 20A with respect to the main body 10A about two axes orthogonal to the rotation axis of the electric motor 11.

[0178] Specifically, as shown in Figure 26 and Figure 27 , the first coupling mechanism 66A includes a coupling portion 662A on the side of the main body 10A and a coupled portion 664A on the side of the head 20A. As shown in Figure 26 , the coupling portion 662A has a spherical concave surface 6620A formed on the upper end surface of the shaft member 13 from the electric motor 11. Further, a speed reduction mechanism (not shown) or the like can be provided between the shaft member 13 and the electric motor 11. As shown in Figure 27 , the coupled portion 664A has a spherical convex surface 6640A formed on the lower end surface of the rotation shaft 14 for driving the tool unit 21. In a state where the head 20A is attached to the main body 10A, the spherical concave surface 6620A of the coupling portion 662A is fitted into the spherical convex surface 6640A of the coupled portion 664A. In this case, the head 20A is rotatable with respect to the main body 10A via the sliding of the spherical surfaces of the spherical concave surface 6620A of the coupling portion 662A and the spherical convex surface 6640A of the coupled portion 664A with respect to each other.

[0179] Further, the coupling between the coupling portion 662A and the coupled portion 664A is achieved in such a manner that the rotational force from the electric motor 11 is transmitted to the rotation shaft 14 for driving the tool unit 21 (and the rotation shaft portion 2301 corresponding thereto) (i.e., in a manner that restricts relative rotation about the axis of the shaft member 13). Specifically, as shown in Figure 26 , the coupling portion 662A has a non-circular outer shape (an outer shape having three corners 6621A toward the radial inner side with reference to the axis of the shaft member 13) when viewed in the axial direction of the shaft member 13, thereby restricting the range of the spherical concave surface 6620A. Also, as shown in Figure 27 , the coupled portion 664A has a non-circular outer shape (an outer shape having three corners 6641A toward the radial inner side with reference to the axis of the shaft member 13) when viewed in the axial direction of the shaft member 13, thereby restricting the range of the spherical convex surface 6640A.

[0180] Also, in the present embodiment, the head 20A is coupled to the main body 10A in a rotatable manner by the second coupling mechanism 67A (an example of a first swing support mechanism) in a swingable manner with respect to the main body 10A. As shown inFigure 28 As shown, the second coupling mechanism 67A is formed of two rotation shafts 671, 672 orthogonal to each other and two bearings 676, 677. Further, the rotation shafts 671, 672 can also be orthogonal to the shaft member 13. In this case, as shown in FIG. 6, the head 20A is able to swing with respect to the main body 10A in a direction orthogonal to both the shaft member 13 and the rotation shaft 671 by the rotation shaft 671 and the bearing 676. Similarly, the head 20A is able to swing with respect to the main body 10A in a direction orthogonal to both the shaft member 13 and the rotation shaft 672 by the rotation shaft 672 and the bearing 677. According to the swing mechanism related to such a second coupling mechanism 67A, the head 20A including the surface (acting surface) of the frame portion 224A is supported so as to be able to swing front and back and left and right, and the substantial distance does not change. Figure 28 As shown, the head 20A is able to swing with respect to the main body 10A in a direction orthogonal to both the shaft member 13 and the rotation shaft 671 by the rotation shaft 671 and the bearing 676. Similarly, the head 20A is able to swing with respect to the main body 10A in a direction orthogonal to both the shaft member 13 and the rotation shaft 672 by the rotation shaft 672 and the bearing 677. According to the swing mechanism related to such a second coupling mechanism 67A, the head 20A including the surface (acting surface) of the frame portion 224A is supported so as to be able to swing front and back and left and right, and the substantial distance does not change.

[0181] Therefore, the user does not need to hold the head 20A and the main body 10A separately, and by holding only the main body 10A and by lightly touching the head 20A to the approximate position of the skin of the part to be treated, the surface (acting surface) of the frame portion 224A can be reliably brought into contact with the complex curved surface of the skin. Further, when the user performs a strong treatment or wants to stimulate, the main body 10A can be brought into contact with the skin strongly without touching the head 20A. Conversely, when a weak treatment is performed or stimulation is suppressed, the main body 10A can be brought into contact with the skin weakly.

[0182] In the present embodiment, the two rotation shafts 671, 672 and the two bearings 676, 677 can have a clearance of 1 mm in the radial direction with each of the rotation shafts 671, 672 as the center in a manner that each is easily rotatable. Further, the head 20A is pre-applied with a force in the direction of the skin by the transmission mechanism 191A (a coil spring described below). Therefore, the head 20A is able to move up and down in the direction of the skin by about 1 mm, for example. When the user touches the skin strongly with a force of more than a required force, the transmission mechanism 121A is contracted within a range of 1 mm, and is able to absorb the force without causing pain to the skin.

[0183] In the present embodiment, the electric contact 19 (refer to Figure 2 ) on the main body 10A side includes a transmission mechanism 191A including a coil spring that is able to expand and contract in the up and down direction (for example, a direction parallel to the axial direction of the shaft member 13). As Figure 20As shown, one end of the transmission mechanism 191A is connected to the main body side, and the other end forms the electrical contact 19. In this case, the electrical contact 19 can be in the form of a conductor piece supported by a coil spring (an example of a stretchable conductor element) that forms the transmission mechanism 191A. In this case, the conductor piece can be in the form of a cylinder or a column, and is fixedly supported by the coil spring in a manner in which a portion protrudes from the upper portion of the coil spring that forms the transmission mechanism 191A.

[0184] In the present embodiment, as shown in Figure 26 , Figure 26A and Figure 28 , the electrical contact 19 is supported so as to be movable up and down with respect to the contact holder 670. Specifically, the electrical contact 19 is movable up and down with respect to the contact holder 670 with the position at which the upper end surface abuts against the contact holder 670 serving as the upper limit position. The electrical contact 19 is urged upward by the transmission mechanism 191A including the coil spring described above. Therefore, when the electrical contact 19 is positioned at the upper limit position, the contact holder 670 is urged upward by the transmission mechanism 191A via the electrical contact 19. The contact holder 670 forms a portion of the second link mechanism 67A described above. Specifically, as shown in Figure 28 , the contact holder 670 has a rotation axis 671 supported by a bearing 676 of a swing plate 676A mounted to the sub holder 678 side. Further, in this case, the sub holder 678 has a rotation axis 672 orthogonal to the rotation axis 671, and is supported by a bearing 6776 of the bracket 679 side. Further, the bracket 679 is fixed to the main body portion 10A.

[0185] Further, in the present embodiment, the second link mechanism 67A includes two rotation axes 671, 672, but is not limited thereto, and can be implemented by other link mechanisms as long as the surface (acting surface) of the frame portion 224 and the main body portion 10A are substantially maintained at the same distance and are supported so as to be swingable. Also, in the present embodiment, the swing mechanism related to the second link mechanism 67A is provided on the main body portion 10A side, but can be provided on the head portion 20A side. In this case, the contact holder 298 on the head portion 20A side that holds the electrical contact 29 is fixed with respect to the head portion 20A, but can be supported so as to be swingable.

[0186] Also, in the present embodiment, the electrical contact 29 on the head portion 20A side (refer to Figure 2) includes a transmission mechanism 294A including a coil spring that is able to expand and contract in the up-down direction. One end (the upper end) of the transmission mechanism 294A forms the electric contact 29 on the head 20A side, and the other end (the lower end) is a free end. In a state in which the head 20A is fitted to the main body 10A, the lower end of the transmission mechanism 294A (the lower end of the coil spring) is connected to the upper end of the transmission mechanism 191A (the electric contact 19). At this time, the upper end of the electric contact 19 in the form of a conductor sheet is inserted through to the radially inner side of the coil spring of the transmission mechanism 294A, to achieve a conduction state between the electric contact 19 and the electric contact 29.

[0187] According to such a structure, even in the case in which the head 20A rotates with respect to the main body 10A, since each of the coil springs of the transmission mechanism 191A and the transmission mechanism 294A expands and contracts in correspondence, it is possible to maintain the electrical connection between the head 20A and the main body 10A (i.e., the conduction state between the electric contact 19 and the electric contact 29). That is, in the present embodiment, the electrical connection structure is able to maintain the electrical connection state between the electric contact 19 on the main body 10A side and the electric contact 29 on the head 20A side even in a state in which the head 20A is arbitrarily swung with respect to the main body 10A.

[0188] Thus, according to the present embodiment, by using the first link mechanism 66A and the second link mechanism 67A (i.e., the first link mechanism 66A and the second link mechanism 67A that are able to rotate without changing the substantial distance between the head 20A and the main body 10A) that rotatably link the head 20A to the main body 10A, and the spring contacts (the transmission mechanism 191A and the transmission mechanism 294A that are able to expand and contract) disposed in the vicinity thereof, it is possible to swing the head 20A in conformity with the uneven surface of the user's skin while performing skin treatment. That is, even if the head 20A is swung, it is possible to continue to supply power to the heating mechanism 22 and the like, so it is possible to maintain the effective skin treatment described above even if the head 20A is swung in conformity with the curved surface of the user's skin. Therefore, it is possible to make the use convenience of the hand-held device good, and to achieve the effective skin treatment described above.

[0189] Further, in the present embodiment, it is possible to provide four pairs of the transmission mechanism 191A and the transmission mechanism 294A around the first link mechanism 66A (and the link structure 40A described below). In this case, as Figure 20As shown, the other two pairs of transmission mechanisms 191A and 294A can be connected to the wiring structure 90B for the light irradiation section 70A. Thereby, two combinations of the combinations of the positive and negative electrodes for the heating mechanism 22 and the combinations of the positive and negative electrodes for the light irradiation section 70A can be realized. Among them, in the modification example, one pair of transmission mechanisms 191A and 294A is provided around the first link mechanism 66A, or three or more pairs of transmission mechanisms 191A and 294A are provided around the first link mechanism 66A, so that one or three or more sets of combinations of the positive and negative electrodes can be configured.

[0190] Further, in the present embodiment, as shown in FIG. 1, the light irradiation section 70A is configured using the space of the central portion surrounded by the three cutter units 21A, together with the temperature measuring mechanism 72A such as a thermistor. In this case, the head portion 20A can be illuminated, so that the user can perform the treatment while always confirming the state of the skin, and thus a result desired by the user can be obtained. Also, the heating mechanism 22 can be appropriately controlled based on the measurement result of the temperature measuring mechanism 72A. Figure 22

[0191] In the present embodiment, the head portion 20A is detachable with respect to the main body portion 10A, and has a link structure 40A linked to the head portion 20A. In this case, the head portion 20A can also be detached and another functional accessory (another accessory instead of the head portion 20A) can be installed. Also, in this case, a plurality of other functional accessories (for example, an accessory for a skin beautifier) can be prepared. The other functional accessories have the same electrical contacts 29 as the head portion 20A, and can be fitted to the main body portion 10A in a manner having compatibility. In this way, according to the present embodiment, the main body portion 10A can hold the head portion 20A to be rotatable and detachable, and thus various accessories that can be swung with respect to the skin and can generate various effects can be fitted (replaced), and the convenience can be improved.

[0192] In the structure in which the fitting (replacement) of the various accessories can be performed, the control section 300 of the main body portion 10A can be able to specify (recognize) the kind of the accessory in the fitted state. In this case, the specification (recognition) of the kind of the accessory in the fitted state can also be realized by a method of changing the magnetic resistance value, the resistance value, or the like of the magnetic mechanism or the electrical mechanism of the electrical connection structure according to the kind of the accessory, or changing the shape of the connection portion of the mechanical connection structure according to the kind of the accessory. Alternatively, the control section 300 of the main body portion 10A can specify (recognize) the kind of the accessory in the fitted state based on input information from the user. In any case, the control section 300 can control the output (for example, the rotation speed of the electric motor 11, the light stimulation, the heat stimulation, the vibration stimulation, the electric stimulation, or the like) based on the kind of the accessory in the fitted state to maximize the respective effects and functions.

[0193] ​In the illustrated example, the connecting structure 40A includes a held portion 41A on the head 20A side and a holding portion 42A on the main body 10A side. In this case, as shown in FIG. 6, the held portion 41A can be in the form of a claw that can be protruded by a force of a plate spring or the like, and as shown in FIG. 7, the holding portion 42A can be in the form of a recessed claw into which the held portion 41A (the form of the protruded claw) can be fitted. In this case, with the connecting structure 40A including the fitting structure using the claw, the head 20A can be simply attached to and detached from the main body 10A. Figure 27 Figure 26A

[0194] Also, in the present embodiment, the lower end of the transmission mechanism 294A on the head 20A side is connected to the upper end of the transmission mechanism 191A (the electrical contact 19) in a releasable manner. That is, when the head 20A and the main body 10A are in a state of being released from each other, the lower end of the transmission mechanism 294A and the upper end of the transmission mechanism 191A are in a state of being separated from each other, and the electrical contact 19 and the electrical contact 29 are in a non-conductive state. Therefore, for example, when the head 20A and the main body 10A are released from each other, the electrical wire or the like related to the wiring does not become an obstacle compared to a structure in which the electrical contact 29 and the electrical contact 19 are maintained in a connected state by the electrical wire or the like, and the convenience is increased. Also, the assembly (replacement) of the various fittings described above becomes easy, and the convenience is increased.

[0195] Also, in the present embodiment, only when the head 20A is assembled to the main body 10A in the assembled state, the lower end of the transmission mechanism 294A and the upper end of the transmission mechanism 191A become in a state of being connected to each other. That is, the electrical contact 19 and the electrical contact 29 become in a conductive state. Therefore, when the head 20A and the main body 10A are released from each other, it is possible to reliably prevent the user from performing an unintended operation (the heating mechanism 22 of the head 20A in the released state is operated, or the like) compared to a structure in which the electrical contact 29 and the electrical contact 19 are maintained in a connected state by the electrical wire or the like.

[0196] Further, in the present embodiment, the control portion 300 can also discriminate (detect) the assembled state and the non-assembled state in which the head 20A is assembled to the main body 10A. For example, the control portion 300 can also achieve such discrimination based on the electrical connection state between the electrical contact 19 and the electrical contact 29. In this case, the control portion 300 can also cause the heating mechanism 22 or the like to operate only during a period in which the assembled state in which the head 20A is assembled to the main body 10A is detected.

[0197] The above-described embodiments have been described in detail, but are not limited to the specific embodiments, and various modifications and changes can be made within the scope of the claims. Also, it is possible to combine all or a plurality of the constituent elements of the above-described embodiments.

[0198] ​​For example, in the above-described embodiment 1 (the same as embodiment 2), as an example of the action mechanism that exerts a specific action on the target site 900 of the user contacted by the head 20, the heating mechanism 22 is disclosed, but the action mechanism that exerts a specific action on the target site 900 of the user is not limited to the heating mechanism 22. That is, instead of or in addition to the heating mechanism 22, an action mechanism that can exert a specific action other than a heating action can be used. In this case, the action mechanism can be provided with a pair of electrodes identical to the pair of electrodes 221 and generate an electric stimulus at the target site 900 of the user. In this case, the action mechanism can also operate by receiving power supply from the power source by the pair of electrodes in the above-described manner. In this case, the specific action based on the electric stimulus can include a heating action of high frequency, an action of muscle electric stimulation (hereinafter, EMS: Electrical Muscle Stimulation), an action of introducing ions, an action of discharging ions, or any combination thereof. In this case, the EMS is advantageous in that it can perform tightening of the target site 900 and perform relaxation care. Also, the discharging of ions is advantageous in that it can remove the skin pore dirt of the target site 900, and the introduction of ions is advantageous in that it can moisturize the skin of the target site 900. Such a specific action is suitable as care for the skin after shaving.

[0199] Also, in the above-described embodiment 2 (the same as embodiment 1), the electric energy is supplied from the main body 10A to the head 20A via the transmission mechanism 191A and the transmission mechanism 294A, so that effective skin treatment based on electricity, such as electrothermal, vibration, light, electric stimulus, etc. can be performed, but the energy supplied is not limited to electric energy. Instead of electric energy, thermal energy, etc. can be supplied. Also, the electric connection structure realized via the above-described electric contact 19 and the electric contact 29 can also be used as a communication line for supplying sensor information (electric signals) from various sensors that can be provided to the head 20A to the main body 10A. In this case, the various sensors that can be provided to the head 20A can include a temperature sensor (for example, the temperature measurement mechanism 72 described in the above-described embodiment 2), a humidity sensor, an image sensor (for example, an image sensor for measuring skin condition, etc.), etc. Also, the electric connection structure realized via the above-described electric contact 19 and the electric contact 29 can also be used as a power supply line for supplying power to other elements (other elements that use electric power as a power source other than the light irradiation portion 70A) provided to the main body 10A. In this case, the other elements can also be Peltier elements, communication modules, etc.

[0200] Also, in the above-described embodiment 2 (the same as embodiment 1), the electric shaver 1A is an example of the skin treatment device, but as described above, it can also be applied to other skin treatment devices such as a beauty device. For example, in the case of a beauty device, a plurality of electrodes for applying various output waveforms to the skin can be provided in place of the cutter unit 21A or in addition to the cutter unit 21A on the head corresponding to the head 20A. In this case, as for the electrical connection structure between the plurality of electrodes and the main body 10A, the electrical connection structure of the above-described embodiment 2 can be applied. In this case, part or all of the plurality of electrodes can also be fixed to the same holder as the shaver holder 232A in a detachable manner using the same holder ring as the cutter unit holding ring 223A.

[0201] Symbol explanation

[0202] 1, 1A - electric shaver, 10 - main body, 11 - electric motor, 12 - battery, 13 - shaft member, 15 - user interface, 19 - electric contact (example of contact element), 191A - transmission mechanism (example of conductive spring element), 20, 20A - head, 21, 21A - cutter unit, 22 - heating mechanism, 29 - electric contact, 294A - transmission mechanism (example of conductive spring element), 70, 70A - light irradiation section, 230 - base, 2301 - rotation shaft section, 2302 - opening and closing shaft, 231, 231A - main holder section (example of head main body section), 2310 - opening section, 2314 - rotation shaft support section (example of second swing support mechanism), 232, 232A - shaver holder (example of second holder section), 2321 - limit section, 2324 - peripheral wall, 2131 - outer blade section, 21311 - contact surface section, 21312 - peripheral wall section, 2132 - inner blade section, 21321 - blade, 221 - electrode, 224 - frame section, 300 - control section, 67A - second link mechanism (example of first swing support mechanism), 90 - wiring structure, 94A - power transmission spring (example of conductive spring element), 94B - power transmission spring (example of conductive spring element), 900 - target section, 901 - hair, 902 - shaving gel.

Claims

1. A skin treatment device characterized by comprising: a head portion capable of contacting a target portion of a user, the head portion comprising: an electrically driven cutter unit; and an action mechanism that applies a specific action to the target portion of the user contacted by the head portion based on electric power supplied from a power source, the action mechanism including a heating element that flows a direct current to generate heat or a pair of electrodes that generates an electric stimulus, the cutter unit having: an inner blade portion, an outer blade portion capable of contacting the target portion of the user; and a plurality of blades having a cutting edge, one of the pair of electrodes being implemented by the outer blade portion, the other of the pair of electrodes being disposed around the cutter unit. the cutter unit further having a frame portion that forms an electrode ring disposed around the cutter unit.

2. The skin treatment device of claim 1, wherein, 3. The skin treatment device according to claim 1, characterized in that: the specific action based on the electric stimulus includes at least any one of a heating action of high frequency, an action of EMS, an action of introducing ions, and an action of discharging ions.

4. The skin treatment device according to claim 1 or 2, characterized in that: the inner blade portion is a rotary inner blade portion capable of rotating around a rotation axis.

5. The skin treatment device according to claim 1 or 2, characterized by further comprising: a main body portion that houses an electric motor that drives the cutter unit, the head portion being detachably and displaceably attached to the main body portion.

6. The skin treatment device according to claim 5, characterized in that: the action mechanism is supplied with electric power from the power source via contact between an electric contact provided in the main body portion and an electric contact provided in the head portion.

7. The skin treatment device according to claim 6, characterized in that: the electric contact in the head portion is provided in a held portion that is held by the main body portion in a detachable manner, the electric contact in the main body portion is provided in a holding portion that holds the held portion in a detachable manner.

8. The skin treatment device according to claim 6, characterized in that: the electric contact in the head portion is provided at a position apart from the held portion held by the main body portion in a detachable manner, the electric contact in the main body portion is provided at a position apart from the holding portion that holds the held portion in a detachable manner. the head portion further has a bracket portion that holds the cutter unit in a displaceable manner, 9. The skin treatment device according to claim 1 or 2, wherein, one end of a wire electrically connected to the power source is engaged with the other end of the wire, the wire is configured to maintain the engagement state with one of the pair of electrodes even if the cutter unit is displaced with respect to the bracket portion.

10. The skin treatment device according to claim 9, characterized in that: the head portion has two or more of the cutter units, the wire includes a wiring portion that electrically connects the two or more cutter units to each other. the skin treatment device further comprises a light irradiation portion provided around the cutter unit and irradiating light to the target portion of the user contacted by the head portion.

11. The skin treatment device according to claim 1 or 2, characterized in that, 12. The skin treatment device according to claim 1 or 2, characterized in that: ​ The above-mentioned action mechanism always operates in conjunction with the electric rotation of the above-mentioned cutter unit.

13. The skin treatment device according to claim 1 or 2, wherein The above-mentioned action mechanism can operate independently of the electric rotation of the above-mentioned cutter unit.

14. The skin treatment device according to claim 1 or 2, wherein A control section that controls the above-mentioned action mechanism is further provided.

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