Scalp Care Device

Abstract

To provide a scalp care device capable of more surely bringing therapeutic elements into contact with the scalp.SOLUTION: A scalp care device includes a body part storing a driving source for driving an output shaft 4551. Further, the scalp care device includes a therapeutic part having a plurality of therapeutic elements 43 for performing reciprocating movement along a plane P3 orthogonal to the axial direction of the output shaft by the drive of the output shaft.SELECTED DRAWING: Figure 38

Description

[Technical field]

[0001] The present disclosure relates to a scalp care device. [Background technology]

[0002] Conventionally, as disclosed in the following Patent Document 1, a scalp care device is known that includes a device body that houses a motor that drives an output shaft, and a massage head that has massage fingers (treatment fingers) that operate when driven by the motor.

[0003] In this patent document 1, the massage prongs are connected to the output shaft in a state inclined with respect to the axial direction of the output shaft, and when the output shaft is rotated, the massage prongs rotate around the output shaft in a state inclined with respect to the axial direction of the output shaft. In this way, the massage prongs are brought into contact with the scalp 1 while rotating, and the rotational stimulation can be applied to the scalp. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 6220173 Summary of the Invention [Problem to be solved by the invention]

[0005] However, since the scalp generally has a convex curved surface, depending on the rotation position, it may not be possible for the massage probes (treatment probes) to come into contact with the scalp at an effective angle.

[0006] Therefore, an object of the present disclosure is to obtain a scalp care device that can more reliably bring a treatment element into contact with the scalp. [Means for solving the problem]

[0007] The scalp care device of the present disclosure comprises a main body portion housing a drive source for driving an output shaft, and a treatment portion having a plurality of treatment elements that perform reciprocating motion along a plane perpendicular to the axial direction of the output shaft by driving the output shaft. Effect of the Invention

[0008] According to the present disclosure, a scalp care device can be obtained that can more reliably bring a treatment element into contact with the scalp. [Brief description of the drawings]

[0009] [Figure 1] 1 is a perspective view of a scalp care device having a first treatment attachment attached to a main body portion, seen from one direction. [Diagram 2] 13 is a perspective view of the scalp care device with the first treatment attachment attached to the main body, seen from another direction. FIG. [Diagram 3] 1 is a perspective view of a scalp care device having a second treatment attachment attached to a main body portion, viewed from one direction. [Figure 4] 13 is a perspective view of the scalp care device with the second treatment attachment attached to the main body, seen from another direction. FIG. [Diagram 5] FIG. [Figure 6] FIG. 11 is a perspective view of the main body seen from another direction. [Figure 7] FIG. [Figure 8] FIG. 2 is a perspective view of the first treatment attachment from one direction. [Figure 9] An oblique view of the first treatment attachment from another direction. [Figure 10] 11 is a perspective view showing a state in which the first treatment portion of the first treatment attachment is detached from the head portion. FIG. [Figure 11] FIG. 4 is an exploded perspective view showing the head portion of the first treatment attachment. [Figure 12] FIG. 4 is an exploded perspective view showing the first treatment portion of the first treatment attachment. [Figure 13] Back view of the first treatment attachment. [Figure 14]FIG. 4 is a diagram for explaining the operation of a reduction mechanism provided in the first treatment attachment. [Figure 15] Plan view of the first treatment attachment. [Figure 16] Cross section AA of Figure 13. [Figure 17] Cross-sectional view of FIG. 13 . [Figure 18] Cross-sectional view taken along CC in Figure 15 . [Figure 19] 15. Cross-sectional view taken along the line D-D in FIG. [Figure 20] 4 is an enlarged perspective view showing a first treatment element provided on the first treatment attachment. FIG. [Figure 21] FIG. 17 is an enlarged view of a part of FIG. 16. [Figure 22] FIG. 18 is an enlarged view of a part of FIG. 17. [Figure 23] 13 is a diagram explaining a method of forming a core part of the treatment projection of the first treatment element using a mold. FIG. [Figure 24] FIG. 4 is an enlarged view of a portion of the rubber cover with the rubber cover frame removed. [Diagram 25] 13A to 13C are diagrams illustrating a method of forming an elastic portion of a treatment protrusion of a first treatment element using a mold. [Figure 26] FIG. 13 is a diagram showing a modified example of the rubber cover. [Figure 27] FIG. 13 is a diagram showing another modified example of the rubber cover. [Figure 28] FIG. 2 is a perspective view of the second treatment attachment from one direction. [Figure 29] An oblique view of the second treatment attachment from another direction. [Diagram 30] Side view of the second treatment attachment. [Diagram 31] 13 is a perspective view showing a state in which the second treatment portion of the second treatment attachment has been removed from the head portion. FIG. [Diagram 32] FIG. 4 is an exploded perspective view showing the head portion of the second treatment attachment. [Diagram 33] FIG. 4 is an exploded perspective view showing the second treatment portion of the second treatment attachment. [Diagram 34] Back view of the second treatment attachment. [Diagram 35] FIG. 11 is a diagram for explaining the operation of a reduction mechanism provided in the second treatment attachment. [Diagram 36] FIG. 11 is a diagram for explaining the operation of the second massager provided on the second massage attachment. [Figure 37] A view of the second treatment attachment along the output axis direction of the second treatment element on one side. [Figure 38] EE cross section of Figure 34. [Figure 39] FF cross-sectional view of Figure 34. [Diagram 40] 13 is a cross-sectional view showing the state in which the rubber cover has been removed from the treatment element base. FIG. [Diagram 41] 13 is a cross-sectional view showing the state in which the rubber cover is attached to the treatment element base and the rubber cover frame. FIG. [Diagram 42] 13 is a diagram explaining a method of forming a core part of the treatment projection of the second treatment element using a mold. FIG. [Diagram 43] 13 is a diagram explaining a method of forming a core part of the treatment projection of the second treatment element using a mold. FIG. [Diagram 44] Cross section G-G of Figure 35. [Diagram 45] HH cross section of Figure 37. [Figure 46] Cross-sectional view II of Figure 37. [Figure 47] Cross-sectional view of JJ in Figure 37. [Figure 48] FIG. 4 is a perspective view showing a second treatment portion of the second treatment attachment. [Figure 49] 13 is an enlarged perspective view showing the treatment protrusion of the second treatment attachment. FIG. [Figure 50] FIG. 13 is a diagram showing an example of use of a treatment protrusion according to a comparative example. [Figure 51] 13A to 13C are diagrams illustrating an example of use of a treatment protrusion with an inclined tip surface. [Figure 52] FIG. 13 is a diagram illustrating the operation of the second massager provided on the second massage attachment. [Diagram 53] FIG. 11 is a diagram illustrating a first modified example of the operation of the second massager. [Figure 54] FIG. 11 is a diagram illustrating a second modified example of the operation of the second massager. [Figure 55] FIG. 13 is a diagram illustrating a third modified example of the operation of the second massager. [Figure 56] FIG. 13 is a diagram illustrating a fourth modified example of the operation of the second massager. [Figure 57] FIG. 13 is a diagram illustrating a fifth modified example of the operation of the second massager. [Figure 58] FIG. 13 is a diagram illustrating a sixth modified example of the operation of the second massager. [Figure 59] FIG. 13 is a diagram illustrating a seventh modified example of the operation of the second massager. [Figure 60] FIG. 13 is a diagram illustrating an eighth modified example of the operation of the second massager. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, the embodiments will be described in detail with reference to the drawings. However, more detailed description than necessary may be omitted. For example, detailed description of already well-known matters or duplicate description of substantially the same configuration may be omitted.

[0011] It should be noted that the accompanying drawings and the following description are provided to enable those skilled in the art to fully understand the present disclosure, and are not intended to limit the subject matter described in the claims.

[0012] In the following description, the direction in which the treatment attachment moves relative to the main body when the treatment attachment is attached to or detached from the main body is defined as the up-down direction. In addition, the up and down directions are defined with the treatment attachment positioned below the main body.

[0013] [Example of scalp care device] The scalp care device 10 according to this embodiment includes a main body 20 in which a motor 235 serving as a drive source is housed, and a plurality of treatment attachments that are replaceably attached to and detached from the main body 20.

[0014] In this manner, in the scalp care device 10 according to the present embodiment, a plurality of treatment attachments can be attached to and detached from the main body 20 in an exchangeable manner.

[0015] In the present embodiment, as shown in Figs. 1 to 4, a first treatment attachment 30 and a second treatment attachment 40 are exemplified as a plurality of treatment attachments that can be replaceably attached to and detached from the main body portion 20.

[0016] That is, in this embodiment, the scalp care device 10 is provided with two types of treatment attachments, a first treatment attachment 30 and a second treatment attachment 40, and each treatment attachment is adapted to be attached to and detached from a common main body 20.

[0017] By replacing the treatment attachment attached to the main body 20, different scalp care effects can be obtained.

[0018] In this embodiment, the first treatment attachment 30 is an attachment that performs a spiral movement, which is a rotational movement, and the second treatment attachment 40 is an attachment that performs a sliding movement in the left and right direction in the state shown in Figure 36.

[0019] Therefore, the following describes a scalp beauty device (scalp care device 10) that can perform a sliding motion in the left-right direction and a spiral motion, which is a rotational motion, on the main body (main body portion 20) using attachments (first treatment attachment 30 and second treatment attachment 40).

[0020] [Example of main body] In this embodiment, the main body 20 includes a housing 21 that configures an outer shell, as shown in Figures 5 to 7. The housing 21 can be formed, for example, using a synthetic resin material having insulating properties.

[0021] In this embodiment, the housing 21 is formed by joining a plurality of divided bodies, and a cavity is formed inside the housing 21 formed by joining the divided bodies. Various electric components are accommodated inside this cavity. Specifically, the cavity formed inside the housing 21 houses the motor 235, the rechargeable battery 232 that supplies power to the motor 235, the control board 22 that controls the on / off of the power supply (on / off of the drive of the motor 235), and the like.

[0022] In addition, in this embodiment, the housing 21 includes a cylindrical wall portion 211 that is approximately cylindrical and penetrates in the vertical direction, an upper cover portion 212 that is arranged to cover an upper opening of the cylindrical wall portion 211, and a waterproof base 213 that is arranged to cover a lower opening of the cylindrical wall portion 211.

[0023] An approximately rectangular opening is formed at one end (lower end) of the cylindrical wall 211 to which a treatment attachment is attached. And, at the other end (upper end) of the cylindrical wall 211, an approximately rectangular opening having a smaller opening area than the opening formed at the one end (lower end).

[0024] Furthermore, the cylindrical wall portion 211 has a shape in which the diameter is reduced at a midpoint in the vertical direction compared to the openings formed at one end side (lower end side) and the other end side (upper end side). Specifically, the cylindrical wall portion 211 has a shape in which the diameter is gradually reduced from one end side toward the midpoint in the vertical direction, and also gradually reduced from the other end side toward the midpoint. In this embodiment, the reduced diameter portion of the cylindrical wall portion 211 is formed at a position closer to the opening formed at the other end side (upper end side).

[0025] In this way, by providing a reduced diameter portion in the vertical direction of the cylindrical wall portion 211, the user can grip the reduced diameter portion of the cylindrical wall portion 211 when using the scalp care device 10. That is, in this embodiment, the reduced diameter portion of the cylindrical wall portion 211 serves as the grip portion 20a of the main body portion 20.

[0026] An opening formed at the other end (upper end) of the cylindrical wall portion 211 in the vertical direction is closed by the upper cover portion 212. In this embodiment, the upper cover portion 212 includes a waterproof panel 2122 that seals the opening formed at the other end (upper end), and a panel 2121 that serves as an upper wall and is disposed above the waterproof panel 2122.

[0027] The waterproof panel 2122 is fixed to the housing 21 by a waterproof panel fastening screw 214. With the waterproof panel 2122 fixed to the housing 21, the gap between the inner surface of the cylindrical wall portion 211 and the waterproof panel 2122 is sealed by a sealing member.

[0028] In addition, on the top cover 212, a switch button 222 for operating a push-type power switch (not shown) that switches the power supply on and off (turning the drive of the motor 235 on and off) is provided so as to be exposed upward.

[0029] In this embodiment, the control board 22 is disposed below the waterproof panel 2122, and a power switch is placed on this control board 22. Specifically, the waterproof panel 2122 is formed with a through hole 2122a penetrating in the vertical direction, and the power switch is mounted at a position overlapping with the through hole 2122a on the upper side of the control board 22. At this time, the gap between the power switch and the through hole 2122a is covered with a packing 221 formed integrally with the waterproof panel 2122. This prevents water from entering the inside through the through hole 2122a.

[0030] Also, a through hole 2121a is formed in the panel 2121 so as to penetrate in the vertical direction, and a switch button 222 is inserted into this through hole 2121a. Note that, although a push-type power switch has been exemplified as the power switch in this embodiment, a slide type or other switch may be used as long as it can turn the power on and off.

[0031] Further, a motor 235 is electrically connected to the control board 22 via lead wires. In this embodiment, the motor 235 is built into the housing 21 while being held by a motor base 23 arranged below the control board 22. The motor base 23 is fixed to the housing 21 by a motor base fastening screw 231.

[0032] A motor 235 is held on the upper part of the motor base 23, and a rechargeable battery 232 is held on the lower part of the motor base 23. As the rechargeable battery 232, a lithium ion rechargeable battery, a nickel metal hydride rechargeable battery, or the like can be used.

[0033] Furthermore, in this embodiment, an interlock detection switch 233 is attached to the motor base 23. This interlock detection switch 233 detects the pressing of an interlock switch, which will be described later, of the treatment attachment when the treatment attachment is attached to the main body 20. The interlock detection switch 233 detects the pressing of the interlock switch, thereby enabling the motor 235 to be driven. That is, in this embodiment, in a state in which the interlock detection switch 233 does not detect the pressing of the interlock switch, the motor 235 is not driven even if the switch button 222 is operated.

[0034] 7, charging terminal 223 is attached to cylindrical wall portion 211 so as to be exposed to the outside while being sealed with O-ring 224, and a charging cable or the like (not shown) can be inserted therein. That is, by inserting a charging cable or the like into charging terminal 223, rechargeable battery 232 can be charged. Note that the method of charging rechargeable battery 232 is not limited to inserting a charging cable or the like into charging terminal 223, and it is also possible to use, for example, a charging method using contactless power supply, a charging method using long-distance power transmission using a power transmission system, or the like.

[0035] In this embodiment, the motor 235 includes a motor body 2351 and a motor shaft 2352, and is held by the motor base 23 in a state in which the motor shaft 2352 protrudes downward from the motor body 2351. In other words, the motor 235 is built into the cavity of the housing 21 in a state in which the direction of the rotation axis is substantially aligned with the up-down direction.

[0036] The motor shaft 2352 protruding upward is connected to the main body side drive transmission section 26 via the main body side reduction mechanism 24 .

[0037] The main body side reduction mechanism 24 includes a pinion gear 241 attached to the motor shaft 2352. The pinion gear 241 is attached to the motor shaft 2352 so as to rotate together with the motor shaft 2352.

[0038] The main body side reduction mechanism 24 also includes a first reduction gear 242 that meshes with the pinion gear 241 and rotates around the vertical direction, and a first shaft 2421 to which the first reduction gear 242 is attached while extending in the vertical direction.

[0039] Furthermore, the main body side reduction mechanism 24 includes a second reduction gear 243 that meshes with the first reduction gear 242 and rotates around the vertical direction, and a second shaft 2431 that extends in the vertical direction and to which the second reduction gear 243 is attached.

[0040] The main body side reduction mechanism 24 also includes a third reduction gear 244 that meshes with the second reduction gear 243 and rotates around the vertical direction, and a third shaft 2441 that extends in the vertical direction and to which the third reduction gear 244 is attached.

[0041] The main body side reduction mechanism 24 also includes an output gear 245 that meshes with the third reduction gear 244 and rotates about the vertical direction, and an output shaft 246 that extends in the vertical direction and to which the output gear 245 is attached. The output shaft 246 is held by a bearing 247.

[0042] The main body side drive transmission unit 26 is connected to the lower end of the output shaft 246. The main body side drive transmission unit 26 transmits the drive (rotation) of the motor 235 to the treatment element of the treatment attachment attached to the main body 20.

[0043] With this configuration, the drive is transmitted to the treatment attachment attached to the main body 20 at a rotation speed lower than the rotation speed of the motor 235. The main body drive transmission unit 26 has a regular hexagonal shape (polygonal shape) when viewed from the back of the main body 20 (when the main body 20 is viewed from the bottom in the vertical direction, which is the direction in which the main body 20 and the treatment attachment are attached and detached). This allows the treatment attachment drive transmission unit described below to be attached to the main body drive transmission unit 26 in a state in which free rotation is suppressed. The main body drive transmission unit 26 and the treatment attachment drive transmission unit are not limited to a polygonal shape as long as they are attached in a state in which free rotation is suppressed. For example, a D-cut structure is also possible, and free rotation may be suppressed by using a means for increasing the friction force between the main body drive transmission unit 26 and the treatment attachment drive transmission unit.

[0044] In this embodiment, an opening formed on one end side (lower end side) of the cylindrical wall portion 211 is sealed by a waterproof base 213. This waterproof base 213 is fixed to the housing 21 by a waterproof base fastening screw 215.

[0045] In this embodiment, the waterproof base 213 is plate-shaped, and a flat lower surface 213a extending horizontally of the waterproof base 213 is the end surface on the side to which the treatment attachment is attached.

[0046] In addition, a rechargeable battery accommodating recess 2131 is formed on the upper side of the waterproof base 213, and when the waterproof base 213 is fixed to the housing 21, the lower part of the rechargeable battery 232 is accommodated within the rechargeable battery accommodating recess 2131.

[0047] Further, a hook accommodating section 2132 that protrudes downward and opens in the radially outward direction is formed on the lower side of the waterproof base 213, and a hook 28 that engages with an engagement section of the treatment attachment, which will be described later, is accommodated in this hook accommodating section 2132. This hook 28 is accommodated in the hook accommodating section 2132 in a state where it is biased in the radially outward direction by a biasing spring (not shown).

[0048] Further, the waterproof base 213 is formed with an output shaft insertion hole 2134 that penetrates in the vertical direction and into which the output shaft 246 is inserted. The waterproof packing 25 seals a gap that is formed between the outer surface of the output shaft 246 and the inner surface of the output shaft insertion hole 2134 when the output shaft 246 is inserted. The waterproof packing 25 is pressed by the packing presser plate 27 to seal the gap that is formed between the outer surface of the output shaft 246 and the inner surface of the output shaft insertion hole 2134.

[0049] The packing gland plate 27 is fixed to the waterproof base 213 by a packing gland plate fastening screw 216. Specifically, a packing gland plate accommodating recess 2133 is formed on the underside of the waterproof base 213, and the packing gland plate 27 is fixed to the waterproof base 213 by the packing gland plate fastening screw 216 while being accommodated in the packing gland plate accommodating recess 2133.

[0050] Furthermore, the waterproof base 213 is formed with a through hole 2135 penetrating in the up-down direction, and an interlock detection switch cover 234 is inserted into this through hole 2135.

[0051] As described above, in this embodiment, the main body 20 has a waterproof structure, and water is prevented from entering the cavity within the housing 21.

[0052] [An example of the first treatment attachment] Next, an example of the first treatment attachment will be described with reference to Figs. 8 to 25.

[0053] The first treatment attachment 30 includes a head portion 31 that is detachably mounted to the main body portion 20, and a first treatment portion (treatment section) 32 that is detachably attached to one end side (upper end side) of the head portion 31.

[0054] The head unit 31 includes a head housing 310 that forms the outer shell of the head unit 31. The head housing 310 can be formed using, for example, a synthetic resin material having insulating properties.

[0055] The head housing 310 is formed by joining a number of divided bodies, and a cavity is formed inside the head housing 310 formed by joining the divided bodies. The cavity accommodates a first treatment attachment side reduction mechanism 35, which will be described later.

[0056] Specifically, head housing 310 has a substantially rectangular shape when viewed from the back, and includes attachment case 311 that opens downward, and attachment base 312 that is disposed so as to cover the opening of attachment case 311. Attachment base 312 is fixed to attachment case 311 by attachment base fastening screws 3121.

[0057] The attachment case 311 includes a peripheral wall 3111 and a top wall 3112 connected to the upper end of the peripheral wall 3111. The peripheral wall 3111 is shaped so that its diameter gradually increases from the upper end side, which is the side attached to the main body 20, toward the lower end side. The top wall 3112 is plate-shaped, and a flat top surface 3112a extending horizontally of the top wall 3112 is the end surface on the side attached to the main body 20. When the first treatment attachment 30 is attached to the main body 20, the top surface 3112a is configured to be substantially flush with the lower surface 213a (the end surface of the main body on the side where the treatment attachment is attached).

[0058] This makes it easy to design the shapes of the main body 20 and the first treatment attachment 30 so that when the first treatment attachment 30 is attached to the main body 20, there is a smooth continuation at the joint.

[0059] In addition, in this embodiment, the connecting portion between the main body 20 and the treatment attachment is made to be a flat surface. This allows the connecting portion to be smoothly connected, while the shapes of other portions can be more easily made into various shapes. In other words, the design of the scalp care device 10, which is configured to be able to replace multiple treatment attachments, is improved, while the design freedom of the main body 20 and the treatment attachments is improved.

[0060] Furthermore, by making the joint between the main body 20 and the first treatment attachment 30 flat, the internal space can be easily sealed using an O-ring or packing. In this embodiment, the main body 20 has a waterproof structure. In this way, for example, during bathing, the scalp care device 10 formed by attaching the first treatment attachment 30 to the main body 20 can be used to perform care (scalp care) such as washing the hair (cleaning the scalp 1) and massaging the scalp 1.

[0061] Further, a through hole 3112b penetrating in the vertical direction is formed in the top wall 3112, and the first treatment attachment side drive transmission part 352 is inserted into this through hole 3112b. The first treatment attachment side drive transmission part 352 is formed so that a regular hexagonal (polygonal) space opens upward in a plan view of the first treatment attachment 30 (when the head part 31 is viewed from above in the vertical direction). This regular hexagonal (polygonal) space is formed so as to have approximately the same size as the outer diameter of the main body side drive transmission part 26. Then, when the first treatment attachment 30 is attached to the main body part 20, the main body side drive transmission part 26 is inserted into this regular hexagonal (polygonal) space.

[0062] The top wall 3112 is formed with a hook insertion recess 3112c into which the hook accommodating portion 2132 and the hook 28 of the main body 20 are inserted when the first treatment attachment 30 is attached to the main body 20. An engagement portion 3112d that engages with the hook 28 when the first treatment attachment 30 is attached to the main body 20 is formed in the hook insertion recess 3112c.

[0063] Furthermore, the top wall 3112 is also formed with a through hole 3112e penetrating in the vertical direction, and an interlock switch 341 is inserted into this through hole 3112e while being biased upward by a biasing spring 342. When the first treatment attachment 30 is attached to the main body 20, this interlock switch 341 presses the interlock detection switch cover 234 upward. In this way, the interlock detection switch 233 detects the pressing of the interlock switch 341 (that the first treatment attachment 30 is attached to the main body 20), and the motor 235 can be driven by operating the switch button 222.

[0064] The first treatment attachment side reduction mechanism 35 is arranged in the space inside the attachment case 311 that opens downward.

[0065] Thus, in this embodiment, in order to slow down the operation of the attachment (first treatment attachment 30), a reduction gear (main body side reduction mechanism 24) is provided in the main body (main body portion 20), and further, a reduction gear (first treatment attachment side reduction mechanism 35) is also provided in the attachment (first treatment attachment 30).

[0066] The first treatment attachment side reduction mechanism 35 includes a joint gear 351 that rotates around the vertical direction, and a joint shaft 3511 to which the joint gear 351 is attached while extending in the vertical direction. In this embodiment, a first treatment attachment side drive transmission part 352 is formed at the upper end of the joint gear 351, and a gear part 3521 is formed at the lower end of the joint gear 351. The first treatment attachment side drive transmission part 352 and the gear part 3521 are formed integrally.

[0067] The first treatment attachment side reduction mechanism 35 also includes a drive transmission gear 353 that meshes with the gear portion 3521 and rotates around the vertical direction, and a drive transmission shaft 3531 that extends in the vertical direction and to which the drive transmission gear 353 is attached.

[0068] The first treatment attachment side reduction mechanism 35 also includes four output gears 354 that rotate around the vertical direction. In this embodiment, of the four output gears 354, two output gears 354 closer to the joint gear 351 mesh with the gear portion 3521, and two output gears 354 arranged at positions farther from the joint gear 351 mesh with the drive transmission gear 353. Each of the four output gears 354 is supported by an output gear bearing 3541.

[0069] Further, a rotary base 355 is fixed to each of the four output gears 354. The rotary base 355 includes an output shaft 3551 protruding upward from the center of the disk portion, and an eccentric shaft 3552 protruding downward at a position eccentric from the center of the disk portion. The output shaft 3551 is inserted into a through hole formed in the center of the output gear 354 and the output gear bearing 3541, and is fixed by a rotary base fastening screw 3553. In this manner, the output gear 354 and the rotary base 355 are attached with the output gear bearing 3541 interposed between them.

[0070] In this embodiment, the attachment base 312 is interposed between the output gear bearing 3541 and the output gear 354. Four through holes 312a are formed in the attachment base 312, so that the rotating base 355 attached to the output gear 354 is exposed below the attachment base 312 in a rotatable state.

[0071] If such a first treatment attachment side reduction mechanism 35 is provided, the four rotating bases 355 will operate as follows. Below, a case will be described in which the joint gear 351 rotates counterclockwise in the state shown in Fig. 14 when the drive (rotation) of the motor 235 is transmitted. When the joint gear 351 rotates in the reverse direction, each gear etc. will also rotate in the opposite direction to that described below.

[0072] 14, the drive transmission gear 353 and the two output gears 354 closer to the joint gear 351 rotate clockwise. That is, the two rotating bases 355 closer to the joint gear 351 also rotate clockwise.

[0073] On the other hand, the two output gears 354 disposed at positions farther from the joint gear 351, that is, the two rotary bases 355 disposed at positions farther from the joint gear 351, rotate counterclockwise.

[0074] At this time, the rotating base 355 rotates around the output shaft 3551. Therefore, the eccentric shaft 3552 provided on the rotating base 355 also rotates on a circumference centered on the output shaft 3551. In other words, the eccentric shaft 3552 performs a rotational motion along a plane (horizontal plane P4) perpendicular to the axial direction (up-down direction) of the output shaft 3551.

[0075] The first treatment section 32 is detachably attached to the head section 31 having such a configuration.

[0076] The first treatment section 32 includes a rubber cover frame 322 that is detachably attached to the head section 31 , and a rubber cover 321 that is attached to the rubber cover frame 322 .

[0077] The rubber cover 321 can be made of a flexible material such as elastomer, and is set to have substantially the same shape and size as the head portion 31.

[0078] Further, to this rubber cover 321, a rubber cover frame 322 made of a harder material than the rubber cover 321 made of a flexible member is attached.

[0079] Specifically, mounting protrusions 3222 protruding upward are provided at approximately the center of each side of the rubber cover frame 322. The mounting protrusions 3222 are fitted into mounting holes 3212 provided to penetrate the rubber cover 321 in the up-down direction at approximately the center of each side of the outer periphery of the rubber cover 321, thereby allowing the rubber cover 321 to be attached to the rubber cover frame 322. At this time, a protrusion 3211 formed in the center of the rubber cover 321 and protruding upward is inserted and fitted into an insertion rib 3221 formed in the center of the rubber cover frame 322 and protruding downward.

[0080] In this way, by attaching the highly rigid rubber cover frame 322 to the flexible rubber cover 321, the first massage unit 32 can be easily attached to and detached from the head unit 31. In addition, the portion of the rubber cover 321 to which the rubber cover frame 322 is not attached is the conforming deformation portion 3213, and the massage element base 323 is fitted into this conforming deformation portion 3213. In this embodiment, four circular holes are formed at positions symmetrical with respect to the center of the rubber cover frame 322, and the portions of the rubber cover 321 corresponding to the four circular holes are the conforming deformation portion 3213. That is, in this embodiment, the rubber cover 321 is formed with four circular conforming deformation portions 3213.

[0081] In addition, the massage element base 323 is made of a resin or the like having higher rigidity than the rubber cover 321, and is a member that is difficult to deform. The massage element base 323 includes a base portion 3231 attached to the eccentric shaft 3552 of the rotating base 355, and a core portion 3232 provided so as to protrude downward from the lower surface of the base portion 3231. In this embodiment, each massage element base 323 is provided with four core portions 3232.

[0082] An insertion hole 3231a is formed on the upper surface of the base portion 3231, and the eccentric shaft 3552 of the rotating base 355 is inserted into this insertion hole 3231a, so that the massage element base 323 is attached to the rotating base 355. In this way, the following deformation portion 3213 is deformed following the movement of the massage element base 323.

[0083] As described above, in this embodiment, the eccentric shaft 3552 rotates on a circumference centered on the output shaft 3551. That is, the eccentric shaft 3552 performs rotational motion along a plane (horizontal plane P4) perpendicular to the axial direction (up-down direction) of the output shaft 3551.

[0084] Therefore, when the eccentric shafts 3552 rotate, the first massage elements (massage elements) 33 attached to the respective eccentric shafts 3552 also rotate on a circumference centered on the output shaft 3551 in accordance with the rotation of the eccentric shafts 3552.

[0085] In this manner, in this embodiment, each of the first massagers 33 performs a rotational motion (circular motion) along a plane (horizontal plane P4) perpendicular to the axial direction (up-down direction) of the output shaft 3551. Therefore, the shape of the trajectory T1 drawn when the first massager 33 is operated becomes a circumference centered on the output shaft 3551 (see FIG. 14). In this embodiment, the first massager 33 rotates while moving in parallel along the horizontal plane P4.

[0086] Here, in this embodiment, the four rotating bases 355 are arranged so that the eccentric shafts 3552 provided on the rotating bases 355 adjacent to each other at close positions (non-diagonal positions) rotate with a phase shift of 180 degrees. In this way, the eccentric shafts 3552 provided on the rotating bases 355 adjacent to each other at close positions (non-diagonal positions) rotate while approaching and moving away from each other. Therefore, the first massagers 33 attached to each eccentric shaft 3552 also rotate while approaching and moving away from the adjacent first massagers 33.

[0087] Furthermore, in this embodiment, the first massagers 33 are arranged so that there are two first massagers 33 that move in circles so as to pass each other when approaching each other, and two first massagers 33 that move in circles so as to move in the same direction when approaching each other. This allows the scalp 1 to be massaged by pinching or twisting when the first massagers 33 are brought into contact with the scalp 1.

[0088] Furthermore, in this embodiment, when viewed along the attachment / detachment direction (up and down direction) of the main body 20 and the first treatment attachment 30, multiple (four) first treatment members 33 are arranged so that the trajectory T1 drawn by each first treatment member 33 is linearly symmetrical with respect to a straight line (line of symmetry C2) passing through the first treatment attachment side drive transmission part 352.

[0089] Specifically, the four rotating bases 355 are arranged symmetrically about a central axis C1 extending in the vertical direction of the first treatment attachment 30 (first treatment section 32) (the direction in which the main body section 20 and the first treatment attachment 30 are attached and detached).

[0090] The four rotary bases 355 have the same shape. Therefore, the eccentricity of the eccentric shaft 3552 from the output shaft 3551 is also the same. Therefore, the trajectory T1 drawn by each of the first treatment members 33 is plane-symmetrical with respect to a plane P1 passing through the central axis C1, and the plane P1 passing through the central axis C1 is set as a symmetry plane P2. When viewed along the attachment / detachment direction (up-down direction) of the main body 20 and the first treatment attachment 30, the symmetry plane P2 is a straight line passing through the central axis C1, and this straight line is set as a symmetry line C2. The first treatment attachment side drive transmission unit 352 is arranged on the symmetry line C2.

[0091] In this way, the multiple (four) first treatment members 33 are arranged so that the trajectory (circumference) T1 drawn by each first treatment member 33 is symmetrical with respect to a straight line (line of symmetry C2) passing through the first treatment attachment side drive transmission part 352.

[0092] This configuration simplifies the configuration of the first treatment attachment side reduction mechanism 35 that transmits the drive of the motor (drive source) 235 to the multiple (four) first treatment elements 33. This allows the first treatment attachment 30 to be made smaller.

[0093] Furthermore, in this embodiment, the first massage element 33 is formed by fitting the massage element base 323 into the following deformation portion 3213 of the rubber cover 321. That is, in this embodiment, the first massage element 33 is formed by assembling the rubber cover 321, which is a member separate from the massage element base 323 and has a relatively low rigidity, to the massage element base 323, which is a member with a relatively high rigidity.

[0094] The first massage element 33 includes a base 331 and a massage projection 332 that projects downward from a top surface (lower surface) 331a of the base 331 and is brought into contact with the scalp 1 when the scalp care device 10 is in use.

[0095] The base 331 is formed by covering the base 3231 of the treatment element base 323 with the rubber cover 321. The treatment projection 332 is formed by covering the core 3232 of the treatment element base 323 with the rubber cover 321, and the part of the rubber cover 321 that covers the core 3232 is the elastic part 32131. Thus, in this embodiment, the treatment projection 332 has the core 3232 and the elastic part 32131 that covers the core 3232. The core 3232 and the elastic part 32131 are formed of separate members.

[0096] Thus, in this embodiment, the attachment that performs a spiral motion (first treatment attachment 30) has a plurality of bristles (treatment projections 332) that come into close contact with the scalp 1 and care for the scalp 1. The bristles (treatment projections 332) are made of a hard resin and a flexible elastic material that are molded separately, and are assembled by covering the hard resin with the flexible elastic material.

[0097] In this embodiment, each of the four first massage elements 33 is provided with four massage protrusions 332, and each of the massage protrusions 332 has a tip end 3322 provided with three small extending protrusions 33222.

[0098] Here, in this embodiment, at least one first massager 33 has at least one inclined treatment protrusion 333 inclined with respect to the axial direction of the output shaft 3551 so that the tip faces the central axis C1 of the first massage section 32. Specifically, as shown in Figures 21 and 22, all of the four first massagers 33 have at least one inclined treatment protrusion 333 inclined with respect to the axial direction of the output shaft 3551 so that the tip faces the central axis C1 of the first massage section 32.

[0099] In this embodiment, all of the four treatment protrusions 332 provided on each first treatment member 33 are inclined with respect to the axial direction of the output shaft 3551 so that their tips face the central axis C1 of the first treatment unit 32. That is, all of the four treatment protrusions 332 provided on each first treatment member 33 are inclined treatment protrusions 333 inclined with respect to the axial direction of the output shaft 3551 so that their tips face the central axis C1 of the first treatment unit 32. In this way, the tips of all the treatment protrusions 332 provided on the first treatment attachment 30 face the central axis C1, making it easier to fit the tips of the treatment protrusions 332 to the scalp 1. Thus, in this embodiment, the attachment (first treatment attachment 30) that performs a spiral motion has bristles (treatment protrusions 332) at the tip of the attachment (first treatment attachment 30) that come into close contact with the scalp 1 and care for the scalp 1. Furthermore, the bristles (treatment projections 332) are arranged to be inclined toward the central axis direction of the device (the central axis C1 of the first treatment section 32).

[0100] With this configuration, no matter where the first massager 33 is in its rotational movement, the tip can be directed toward the central axis C1 of the first massage section 32, and the massage projection 332 can be brought into contact with the scalp 1 at an angle close to perpendicular. As a result, the tip of the massage projection 332 can be brought into closer contact with the scalp 1 more reliably, and the scalp 1 can be given a feeling of use and effects more reliably.

[0101] In addition, the inclination angle of the surface (outer peripheral surface 3322b) located on the opposite side to the central axis C1 with respect to the axial direction of the output shaft 3551 is made larger than the inclination angle of the treatment protrusion 332 with respect to the up-down direction (axial direction of the output shaft 3551) of the treatment protrusion 332, which is inclined with respect to the axial direction of the output shaft 3551 so that the tip faces the central axis C1 of the first treatment section 32.

[0102] In this embodiment, the inclination angle θ of the treatment projection 332 with respect to the vertical direction (the axial direction of the output shaft 3551) is set to about 9 degrees, and the inclination angle of the outer peripheral surface 3322b with respect to the axial direction of the output shaft 3551 is set to about 10 degrees. In this way, the shape of the treatment projection 332 is gradually tapered from the base portion 3321 side to the tip portion 3322.

[0103] In this way, if the inclination angle of the outer peripheral surface 3322b is set to be larger than the inclination angle θ of the treatment protrusion 332, the mold structure can be simplified when forming the treatment protrusion 332 using a mold. As a result, it is possible to improve the moldability of the treatment protrusion 332 and reduce costs.

[0104] Here, in this embodiment, the inclined treatment projection 333 has an inclined core portion 3332 that is inclined with respect to the axial direction of the output shaft 3551 so that the tip thereof faces the central axis C1 of the first treatment section 32.

[0105] The inclination angle of the surface (the outer peripheral surface 3332b of the inclined core portion 3332) located on the opposite side to the central axis C1 with respect to the axial direction of the output shaft 3551 is set to be greater than the inclination angle of the inclined core portion 3332 with respect to the up-down direction (the axial direction of the output shaft 3551) of the inclined core portion 3332 inclined with respect to the axial direction of the output shaft 3551 so that the tip faces the central axis C1 of the first treatment section 32. In other words, the shape of the inclined core portion 3332 is gradually tapered from the base side toward the tip portion.

[0106] This makes it possible to simplify the structure of a die when forming the inclined core portion 3332 using the die.

[0107] Such an inclined core portion 3332 can be formed, for example, by using a mold 50 having an upper mold 51 and a lower mold 52 (see FIG. 23).

[0108] Here, in this embodiment, as described above, the shape of the inclined core part 3332 is gradually tapered from the base side toward the tip. Therefore, after the inclined core part 3332 is molded, the upper mold 51 can be removed from the inclined core part 3332 simply by moving the upper mold 51 upward (the direction in which the mold 50 is removed: the direction perpendicular to the parting line PL of the mold 50). In this way, in this embodiment, the upper mold 51 can be configured without using an inclined pin or a slide mechanism. In this way, it is possible to simplify at least the configuration of the upper mold 51. As a result, it is possible to improve the moldability of the inclined core part 3332 and reduce costs. Note that FIG. 23 is a diagram for explaining a method of forming a core part of the treatment projection of the first treatment element using a mold, and FIG. 23 shows an outline of the mold 50.

[0109] In this embodiment, the inclined treatment projection 333 has an inclined elastic portion 3331 that is inclined with respect to the axial direction of the output shaft 3551 so that the tip faces the central axis C1 when covering the inclined core portion 3332. In this embodiment, all the core portions 3232 constituting the treatment projection 332 correspond to the inclined core portion 3332, and all the elastic portions 32131 constituting the treatment projection 332 correspond to the inclined elastic portion 3331.

[0110] The inclined elastic portion 3331 and the inclined core portion 3332 are formed from separate members, and the inclined elastic portion 3331 is configured so that when it covers the inclined core portion 3332, it elastically deforms and protrudes along the protruding direction of the inclined core portion 3332 (see Figures 22 and 24).

[0111] Specifically, the protruding direction of the inclined elastic part 3331 when the inclined core part 3332 is not covered is different from the protruding direction of the inclined core part 3332. In this embodiment, when the inclined elastic part 3331 does not cover the inclined core part 3332, it protrudes in the direction in which the treatment element base 323 moves when the treatment element base 323 is attached to the rubber cover 321 (upward in FIG. 22). Note that the direction in which the treatment element base 323 moves when the treatment element base 323 is attached to the rubber cover 321 is approximately the same as the axial direction of the output shaft 3551 when the first treatment attachment 30 is assembled.

[0112] Therefore, when the massage element base 323 is attached to the rubber cover 321, the inclined elastic portion 3331 protruding along the axial direction of the output shaft 3551 is elastically deformed so that the tip thereof faces the central axis C1 of the first massage element 32. Then, the inclined core portion 3332 is covered in a state inclined along the protruding direction of the inclined core portion 3332.

[0113] This makes it possible to simplify the structure of a die when forming the inclined elastic portion 3331 using the die.

[0114] Such an inclined elastic portion 3331 can be formed, for example, by using a mold 60 having an upper mold 61 and a lower mold 62 (see FIG. 25).

[0115] In this embodiment, as described above, the inclined elastic portion 3331 is configured to protrude upward in the state shown in FIG. 25 when it does not cover the inclined core portion 3332 (natural state). Therefore, after molding of the inclined elastic portion 3331, the upper mold 61 and the lower mold 62 can be removed from the inclined elastic portion 3331 simply by moving the upper mold 61 upward and the lower mold 62 downward. Thus, in this embodiment, the protruding direction of the inclined elastic portion 3331 when it does not cover the inclined core portion 3332 (natural state) is approximately aligned with the removal direction of the mold 60 (direction perpendicular to the parting line PL of the mold 60). This allows the mold 60 to be configured without using an inclined pin or a slide mechanism, and the configuration of the mold 60 can be simplified. That is, the mold 60 for molding the inclined elastic portion 3331 can be configured simply. This allows the moldability of the inclined elastic portion 3331 to be improved and the cost to be reduced. FIG. 25 is a diagram for explaining a method for forming the elastic portion of the treatment projection of the first treatment element by using a metal mold, and FIG. 25 shows an outline of a metal mold 60. As shown in FIG.

[0116] Also, as shown in FIG. 22, the multiple (four) treatment protrusions 332 provided on one first massager 33 are provided on the first massager 33 in a state in which the axial positions (height positions) of the output shaft 3551 of the base part 3321 are different.

[0117] In this embodiment, as shown in Fig. 20, the height positions of the top surface (bottom surface) 331a of the base 331 are made different, so that the height positions of the base parts 3321 of the multiple (four) treatment projections 332 are made different. The height positions of the base parts 3321 of the multiple (four) treatment projections 332 are made (step-like) so that the side closer to the central axis C1 is on the main body part 20 side (the lower side of Fig. 20). In this way, the virtual curved surface formed by the tips of all the treatment projections 332 provided on the first treatment attachment 30 is made to be close to the convex curved surface of the scalp 1.

[0118] Furthermore, in this embodiment, the position of the output shaft 3551 of the base portion 3321 in the axial direction is changed to arrange the multiple treatment projections 332 in a stepped manner. In this way, the protruding length of the treatment projections 332 is set to a length that can ensure both hair passage and strength, while arranging the multiple treatment projections 332 in a stepped manner. In this way, it is possible to prevent the treatment projections 332 from being damaged while preventing the contact of the treatment projections 332 with the scalp 1 from being hindered by hair. Furthermore, by arranging the multiple treatment projections 332 in a stepped manner, it is possible to make it easier for all the treatment projections 332 to contact the scalp 1, so that the feeling of use and the effect can be more reliably imparted to the scalp 1.

[0119] Thus, in this embodiment, the attachment (first treatment attachment 30) that performs a spiral motion has a plurality of bristles (treatment projections 332) that come into close contact with the scalp 1 and care for the scalp 1. The base positions of the bristles (treatment projections 332) are different for each bristles (treatment projections 332). The height of the bristles (treatment projections 332) may also be different for each bristles (treatment projections 332).

[0120] 26, the tip surface 3322a of the treatment protrusion 332 may be a surface inclined toward the central axis C1. That is, the tip surface 3322a of the treatment protrusion 332 may be an inclined surface or a curved surface inclined toward the central axis C1.

[0121] In this way, even if the treatment projection 332 is deformed during use of the scalp care device 10, the tip of the treatment projection 332 can be easily applied to the scalp (see Figs. 50 and 51). That is, by forming the tip surface of the bristles (treatment projection 332) inclined or curved toward the central axis of the device (central axis C1), the scalp tracking ability of the bristles (treatment projection 332) can be improved. In this way, by improving the scalp tracking ability of the tip of the treatment projection 332, it is possible to more reliably impart a feeling of use and effect to the scalp 1.

[0122] It is preferable that the attachment that performs the spiral motion (the first treatment attachment shown in FIG. 26) also has a plurality of bristles (treatment projections 332) that come into close contact with the scalp 1 and provide treatment for the scalp 1.

[0123] Also, as shown in FIG. 27, it is possible to incline the small extension protrusion 33222 provided on the tip portion 3322 of the treatment protrusion 332 with respect to the axial direction of the output shaft 3551 so that the tip faces the central axis C1.

[0124] This also improves the scalp-following ability of the tips of the treatment projections 332, making it possible to more reliably impart a feeling of use and effect to the scalp 1.

[0125] In addition, it is possible to incline the tip surface 3322a of the treatment projection 332 and also incline the small extending projection 33222.

[0126] Next, an example of a method of using the first treatment attachment 30 having such a configuration will be described.

[0127] First, the first treatment attachment 30 is attached to the main body 20, and the first treatment attachment side drive transmission part 352 is attached to the main body side drive transmission part 26. Then, in this state, the switch button 222 is pressed to drive the motor 235, thereby rotating the main body side drive transmission part 26.

[0128] In this way, the rotation of the main body side drive transmission section 26 is transmitted to the first treatment attachment side drive transmission section 352, and the first treatment attachment side drive transmission section 352 rotates together with the main body side drive transmission section 26. At this time, the gear section 3521 of the joint gear 351 attached to the first treatment attachment side drive transmission section 352 and the drive transmission gear 353 also rotate together with the first treatment attachment side drive transmission section 352.

[0129] As the gear portion 3521 and the drive transmission gear 353 rotate, the four output gears 354 rotate at a reduced speed.

[0130] In this manner, when the four output gears 354 rotate, the four rotary bases 355 respectively connected to the four output gears 354 also rotate.

[0131] At this time, the eccentric shafts 3552 provided on the respective rotary bases 355 perform rotational motion along a plane (horizontal plane P4) perpendicular to the axial direction (up-down direction) of the output shafts 3551.

[0132] Therefore, when the eccentric shaft 3552 rotates, the first massagers 33 attached to the eccentric shafts 3552 also rotate around the output shaft 3551. The massage protrusions 332 provided on the first massagers 33 also rotate following the rotation of the first massagers 33. At this time, the massage protrusions 332 rotate while moving in parallel along the horizontal plane P4.

[0133] In this state, if the treatment protrusions 332 are brought into contact with the scalp 1, the rotating treatment protrusions 332 can perform care (scalp care) such as washing and massaging the scalp 1.

[0134] [An example of the second treatment attachment] Next, an example of the second treatment attachment will be described with reference to Figs. 28 to 52.

[0135] The second treatment attachment 40 includes a head portion 41 that is detachably mounted to the main body portion 20, and a second treatment portion (treatment section) 42 that is detachably attached to one end side (upper end side) of the head portion 41.

[0136] The head portion 41 includes a head housing 410 that forms the outer shell of the head portion 41. The head housing 410 can be formed using, for example, a synthetic resin material having insulating properties.

[0137] The head housing 410 is formed by joining a plurality of divided bodies, and a cavity is formed inside the head housing 410 formed by joining the divided bodies. The cavity accommodates the second treatment attachment side reduction mechanism 45 described later.

[0138] Specifically, the head housing 410 has a substantially rectangular shape when viewed from the back, and includes an attachment case 411 that opens downward, and an attachment base 412 that is disposed so as to cover the opening of the attachment case 411. The attachment base 412 is fixed to the attachment case 411 by an attachment base fastening screw 4123.

[0139] The attachment case 411 includes a peripheral wall 4111 and a top wall 4112 connected to the upper end of the peripheral wall 4111. The peripheral wall 4111 is shaped so that its diameter gradually increases from the upper end side, which is the side attached to the main body 20, toward the lower end side. The top wall 4112 is plate-shaped, and a flat top surface 4112a extending horizontally of the top wall 4112 is the end surface on the side attached to the main body 20. When the second treatment attachment 40 is attached to the main body 20, the top surface 4112a is configured to be substantially flush with the lower surface 213a (the end surface of the main body on the side where the treatment attachment is attached).

[0140] This makes it easy to design the shapes of the main body 20 and the second treatment attachment 40 so that when the second treatment attachment 40 is attached to the main body 20, there is a smooth connection at the joint.

[0141] In addition, in this embodiment, the connecting portion between the main body 20 and the treatment attachment is made to be a flat surface. This allows the connecting portion to be smoothly connected, while the shapes of other portions can be more easily made into various shapes. In other words, the design of the scalp care device 10, which is configured to be able to replace multiple treatment attachments, is improved, while the design freedom of the main body 20 and the treatment attachments is improved.

[0142] Furthermore, by making the joint portion between the main body 20 and the second treatment attachment 40 flat, the internal space can be easily sealed using an O-ring or packing. In this embodiment, as described above, the main body 20 has a waterproof structure. In this way, for example, during bathing, the scalp care device 10 formed by attaching the second treatment attachment 40 to the main body 20 can be used to perform care (scalp care) such as washing the hair (cleaning the scalp 1) and massaging the scalp 1.

[0143] Further, a through hole 4112b penetrating in the vertical direction is formed in the top wall 4112, and the second treatment attachment side drive transmission part 452 is inserted into this through hole 4112b. The second treatment attachment side drive transmission part 452 is formed so that a regular hexagonal (polygonal) space opens upward in a plan view of the second treatment attachment 40 (when the head part 41 is viewed from above in the vertical direction). This regular hexagonal (polygonal) space is formed so as to have approximately the same size as the outer diameter of the main body side drive transmission part 26. Then, when the second treatment attachment 40 is attached to the main body part 20, the main body side drive transmission part 26 is inserted into this regular hexagonal (polygonal) space.

[0144] The top wall 4112 is formed with a hook insertion recess 4112c into which the hook accommodating portion 2132 and the hook 28 of the main body 20 are inserted when the second treatment attachment 40 is attached to the main body 20. An engagement portion 4112d that engages with the hook 28 when the second treatment attachment 40 is attached to the main body 20 is formed in the hook insertion recess 4112c.

[0145] Furthermore, the top wall 4112 is also formed with a through hole 4112e penetrating in the vertical direction, and an interlock switch 441 is inserted into this through hole 4112e while being biased upward by a biasing spring 442. When the second treatment attachment 40 is attached to the main body 20, this interlock switch 441 presses the interlock detection switch cover 234 upward. In this way, the interlock detection switch 233 detects the pressing of the interlock switch 441 (that the second treatment attachment 40 is attached to the main body 20), and the motor 235 can be driven by operating the switch button 222.

[0146] The second treatment attachment side reduction mechanism 45 is arranged in the space inside the attachment case 411 that opens downward.

[0147] Thus, in this embodiment, in order to slow down the operation of the attachment (second treatment attachment 40), a reduction gear (main body side reduction mechanism 24) is provided in the main body (main body portion 20), and further, a reduction gear (second treatment attachment side reduction mechanism 45) is also provided in the attachment (second treatment attachment 40).

[0148] The second treatment attachment side reduction mechanism 45 includes a joint gear 451 that rotates around the vertical direction, and a joint shaft 4511 to which the joint gear 451 is attached while extending in the vertical direction. In this embodiment, a second treatment attachment side drive transmission part 452 is formed at the upper end of the joint gear 451, and a gear part 4521 is formed at the lower end of the joint gear 451. The second treatment attachment side drive transmission part 452 and the gear part 4521 are formed integrally.

[0149] The second treatment attachment side reduction mechanism 45 also includes a drive transmission gear 453 that meshes with the gear portion 4521 and rotates around the vertical direction, and a drive transmission shaft 4533 that extends in the vertical direction and to which the drive transmission gear 453 is attached.

[0150] The second treatment attachment side reduction mechanism 45 is provided with two output gears 454 that mesh with the drive transmission gear 453 , and each of the two output gears 454 is supported by an output gear bearing 4541 .

[0151] In this embodiment, the rotation direction of the two output gears 454 is inclined such that the lower side is inclined toward the central axis C1 with respect to the vertical direction. In this way, the output shaft 4551, which will be described later, is inclined such that the tip thereof faces the central axis C1 of the second treatment unit 42.

[0152] Specifically, the drive transmission gear 453 includes an upper gear 4531 that extends horizontally and meshes with the gear portion 4521, and a lower gear 4532 that is inclined such that its lower end faces the central axis C1 and meshes with two output gears 454. The two output gears 454 are meshed with the lower gear 4532 so that the rotational directions of the two output gears 454 are inclined at about 15 degrees with respect to the vertical direction.

[0153] Furthermore, a rotating base 455 is fixed to each of the two output gears 454. This rotating base 455 includes an output shaft 4551 that protrudes upward from the center of the disk part, and an eccentric shaft 4552 that protrudes downward at a position eccentric from the center of the disk part. The output shaft 4551 is inserted into a through hole formed in the center of the output gear bearing 4541 and the output gear 454, and is fixed by a rotating base fastening screw 4553. In this way, the output gear 454 and the rotating base 455 are attached with the output gear bearing 4541 interposed therebetween.

[0154] In this embodiment, the attachment base 412 is interposed between the output gear bearing 4541 and the output gear 454 .

[0155] Specifically, the attachment base 412 has a pair of rotating base mounting plates inclined at about 15 degrees with respect to the horizontal plane P4, and each of these rotating base mounting plates is formed with a rotating base accommodating recess 4121. A through hole 4121a is formed in the rotating base accommodating recess 4121, and the output shaft 4551 is inserted therethrough. In this way, the rotating base 455 attached to the output gear 454 is rotatably accommodated in the rotating base accommodating recess 4121 and exposed below the attachment base 412.

[0156] If such a second treatment attachment side reduction mechanism 45 is provided, the two rotating bases 455 will operate as follows. Below, a case will be described in which the joint gear 451 rotates counterclockwise in the state shown in Fig. 35 when the drive (rotation) of the motor 235 is transmitted. When the joint gear 451 rotates in the reverse direction, each gear etc. will also rotate in the opposite direction to that described below.

[0157] First, when the joint gear 451 rotates counterclockwise in the state shown in FIG. 35, the drive transmission gear 453 rotates clockwise.

[0158] 35, the two output gears 454 rotate counterclockwise. That is, the two rotating bases 455 rotate clockwise in the state shown in FIG.

[0159] At this time, the rotating base 455 rotates around the output shaft 4551. Therefore, the eccentric shaft 4552 provided on the rotating base 455 also rotates on a circumference centered on the output shaft 4551. In other words, the eccentric shaft 4552 performs a rotational motion along a plane P3 perpendicular to the axial direction of the output shaft 4551.

[0160] Furthermore, in this embodiment, the rotational motion of the eccentric shaft 4552 can be converted into a reciprocating linear motion.

[0161] Specifically, by providing a guide rail 46 and a slide base 47 that can move along a rail portion 461 of the guide rail 46, the rotational motion of the eccentric shaft 4552 is converted into a reciprocating linear motion.

[0162] In this embodiment, two guide rails 46 are used for each rotating base 455, and each guide rail 46 is provided with an attachment rib 462. Then, with the guide rail 46 accommodated in a guide rail accommodating recess 4122 formed in the attachment base 412, the guide rail 46 is fixed to the attachment base 412 by inserting a guide rail fastening screw 4124 into the attachment rib 462. At this time, the two guide rails 46 are fixed to the attachment base 412 with the openings of the rail portions 461 formed on each of the guide rails 46 facing each other with the rotating base 455 in between.

[0163] The slide base 47 also includes a substantially box-shaped main body 471 and a pair of flanges 472 connected to the upper end of the main body 471. The pair of flanges 472 are inserted into the rails 461 that face each other. This allows the slide base 47 to perform linear reciprocating motion along the rails 461 of the guide rails 46. The main body 471 also includes an eccentric shaft housing 4711, in which the eccentric shaft 4552 is housed.

[0164] With this configuration, when the eccentric shaft 4552 is rotated, the main body portion 471 is pressed by the eccentric shaft 4552 and moves back and forth linearly along the rail portion 461 .

[0165] The second treatment section 42 is detachably attached to the head section 41 having such a configuration.

[0166] The second treatment section 42 includes a rubber cover frame 422 that is detachably attached to the head section 41 , and a rubber cover 421 that is attached to the rubber cover frame 422 .

[0167] The rubber cover 421 can be made of a flexible material such as elastomer, and is set to have substantially the same shape and size as the head portion 41.

[0168] Further, to this rubber cover 421, a rubber cover frame 422 made of a harder material than the rubber cover 421 made of a flexible member is attached.

[0169] Specifically, mounting protrusions 4224 protruding upward are provided along each side of the rubber cover frame 422. The mounting protrusions 4224 are fitted into mounting holes 4212 provided to penetrate the rubber cover 421 in the up-down direction along each side of the outer periphery of the rubber cover 421, thereby allowing the rubber cover 421 to be attached to the rubber cover frame 422. At this time, the protrusions 4211 formed on the rubber cover 421 and protruding upward are inserted and fitted into the insertion ribs 4223 formed on the rubber cover frame 422 and protruding downward.

[0170] In this way, by attaching the rubber cover frame 422 having high rigidity to the rubber cover 421 having flexibility, the second massage unit 42 can be easily attached to and detached from the head unit 41. In addition, the portion of the rubber cover 421 to which the rubber cover frame 422 is not attached is the conforming deformation portion 4213, and the massage element base 423 is fitted into this conforming deformation portion 4213. In this embodiment, the rubber cover frame 422 includes a frame portion 4221 and a crosspiece portion 4222, and two rectangular holes are formed at positions symmetrical with respect to the center of the rubber cover frame 422. Then, the portion corresponding to the two rectangular holes in the rubber cover 421 is the conforming deformation portion 4213. That is, in this embodiment, the rubber cover 421 is formed with two rectangular conforming deformation portions 4213.

[0171] In addition, the massage element base 423 is made of a resin or the like having higher rigidity than the rubber cover 421, and is a member that is difficult to deform. The massage element base 423 includes a base portion 4231 attached to the main body portion 471 of the slide base 47, and a core portion 4232 provided so as to protrude downward from the lower surface of the base portion 4231. In this embodiment, nine core portions 4232 are provided on each massage element base 423.

[0172] A slide base accommodating portion 4231a is formed in the base portion 4231, and the main body portion 471 of the slide base 47 is inserted into the slide base accommodating portion 4231a, so that the massage element base 423 is attached to the rotating base 455. In this way, the following deformation portion 4213 is deformed following the movement of the massage element base 423.

[0173] As described above, in this embodiment, the eccentric shaft 4552 rotates on a circumference centered on the output shaft 4551. That is, the eccentric shaft 4552 performs a rotational motion along a plane P3 perpendicular to the axial direction of the output shaft 4551.

[0174] This rotational motion is converted into reciprocating linear motion by the guide rail 46 and the slide base 47 .

[0175] Therefore, when the eccentric shaft 4552 rotates, the second massagers (massage elements) 43 attached to each of the eccentric shafts 4552 perform a reciprocating linear motion along a plane P3 perpendicular to the axial direction of the output shaft 4551 in accordance with the rotation of the eccentric shaft 4552.

[0176] In this manner, in the present embodiment, each of the second massage elements 43 performs a reciprocating linear motion (reciprocating motion) along the plane P3 perpendicular to the axial direction of the output shaft 4551. Therefore, the shape of the trajectory T1 drawn when the second massage element 43 is operated becomes a straight line (see FIG. 52).

[0177] In this manner, in the present embodiment, attachments (the first treatment attachment 30 and the second treatment attachment 40) having treatment elements with different movements are provided.

[0178] Specifically, the shape (circumference) of the trajectory T1 drawn when the first massager 33 is operated (circular motion) is different from the shape (straight line) of the trajectory T1 drawn when the second massager 43 is operated (reciprocating motion).

[0179] In this embodiment, at least one of the multiple second massagers 43 is connected to an output shaft 4551 that is inclined so that the tip thereof faces the central axis C1 of the second massage section .

[0180] This makes it easier for the second massage element 43 to fit the convex curved surface of the scalp 1.

[0181] In this embodiment, the eccentric shafts 4552 provided on the two rotating bases 455 are arranged to rotate with a phase difference of 180 degrees. In this manner, the eccentric shafts 4552 provided on the respective rotating bases 455 rotate while approaching and moving away from each other. Therefore, the second massagers 43 attached to the respective eccentric shafts 4552 via the slide bases 47 perform reciprocating linear motion while approaching and moving away from each other.

[0182] Furthermore, in this embodiment, when viewed along the attachment / detachment direction (up and down direction) of the main body 20 and the second treatment attachment 40, multiple (two) second treatment members 43 are arranged so that the trajectory T1 drawn by each second treatment member 43 is linearly symmetrical with respect to a straight line (line of symmetry C2) passing through the second treatment attachment side drive transmission part 452.

[0183] Specifically, the two rotating bases 455 are disposed at positions symmetrical with respect to the central axis C1 extending in the vertical direction (the direction in which the main body 20 and the second treatment attachment 40 are attached and detached) of the second treatment attachment 40 (second treatment section 42). Therefore, the multiple (two) second treatment members 43 are disposed at positions symmetrical with respect to the plane P1 passing through the central axis C1 of the second treatment section 42. In this way, the configuration of the mechanism that transmits the drive of the motor (drive source) 235 to the multiple second treatment members 43 can be simplified, and the scalp care device 10 can be made smaller.

[0184] The two rotating bases 455 have the same shape. Therefore, the eccentricity of the eccentric shaft 4552 from the output shaft 4551 is also the same. Therefore, the trajectories T1 drawn by the second treatment members 43 are symmetrical with respect to a plane P1 passing through the central axis C1, and the plane P1 passing through the central axis C1 is the symmetry plane P2. When viewed along the attachment / detachment direction (up-down direction) of the main body 20 and the second treatment attachment 40, the symmetry plane P2 is a straight line passing through the central axis C1, and this straight line is the symmetry line C2. The second treatment attachment side drive transmission unit 452 is arranged on the symmetry line C2.

[0185] In this way, the multiple (two) second treatment members 43 are arranged so that the trajectory (straight line) T1 drawn by each second treatment member 43 is symmetrical with respect to a straight line (line of symmetry C2) passing through the second treatment attachment side drive transmission part 4522.

[0186] This configuration simplifies the configuration of the second treatment attachment side reduction mechanism 45 that transmits the drive of the motor (drive source) 235 to the multiple (two) second treatment members 43. This allows the second treatment attachment 40 to be made smaller.

[0187] Furthermore, in this embodiment, the multiple (two) second massagers 43 operate so that the timing at which each second massager 43 reaches one end T1a of the trajectory T1 and reverses when it moves back and forth, and the timing at which each second massager 43 reaches the other end T1b and reverses when it moves back and forth, are linked in a plane symmetrical manner with respect to the plane P1 passing through the central axis C1 of the second massage section 42.

[0188] This makes it possible to cancel out the reaction force that the second massage element 43 receives when the scalp care device 10 is in use.

[0189] At this time, the multiple (two) second massagers 43 also operate so that the vector direction a at each point during the reciprocating motion is interlocked with plane symmetry with respect to the plane P1 passing through the central axis C1 of the second massage section 42. Note that, when the trajectory T1 of the reciprocating motion is a curve, the vector direction a becomes the tangent direction at each point.

[0190] Further, the multiple (two) second massage elements 43 operate so that the directions of increase and decrease in the distance from the plane P1 passing through the central axis C1 of the second massage section 42 are linked in a plane-symmetrical manner.

[0191] In this manner, in the present embodiment, in the attachment (second treatment attachment 40) that slides multiple (two) second treatment members 43, the sliding motion in the left-right direction in the state shown in Figure 36 is made to be a planar symmetrical motion.

[0192] Furthermore, in this embodiment, the second massage element 43 is formed by fitting the massage element base 423 into the following deformation portion 4213 of the rubber cover 421 (see Fig. 40 and Fig. 41). That is, in this embodiment, the second massage element 43 is formed by assembling the rubber cover 421, which is a member separate from the massage element base 423 and has a relatively low rigidity, to the massage element base 423, which is a member with a relatively high rigidity.

[0193] The second massage element 43 includes a base 431 and a massage projection 432 that projects downward from a top surface (lower surface) 431a of the base 431 and is brought into contact with the scalp 1 when the scalp care device 10 is in use.

[0194] The base 431 is formed by covering the base 4231 of the treatment element base 423 with the rubber cover 421. The treatment projection 432 is formed by covering the core 4232 of the treatment element base 423 with the rubber cover 421, and the part of the rubber cover 421 that covers the core 4232 is the elastic part 42131. Thus, in this embodiment, the treatment projection 432 has the core 4232 and the elastic part 42131 that covers the core 4232. The core 4232 and the elastic part 42131 are formed of separate members.

[0195] Thus, in this embodiment, the attachment that performs the sliding action (second treatment attachment 40) has a plurality of bristles (treatment projections 432) that come into close contact with the scalp 1 and care for the scalp 1. The bristles (treatment projections 432) are made of a hard resin and a flexible elastic material that are separately molded, and are assembled by covering the hard resin with the flexible elastic material.

[0196] In this embodiment, each of the two second massage elements 43 is provided with thirteen massage protrusions 432, and the tip portion 4322 of each massage protrusion 432 is provided with three small extending protrusions 4322c.

[0197] Here, in this embodiment, as shown in Figures 47 to 49, at least one second massager 43 has at least one inclined treatment protrusion 433 inclined with respect to the axial direction of the output shaft 4551 so that the tip faces the plane P1 passing through the central axis C1 of the second massage section 42. Specifically, as shown in Figures 38 and 39, all of the two second massagers 43 have at least one inclined treatment protrusion 433 inclined with respect to the axial direction of the output shaft 4551 so that the tip faces the plane P1 passing through the central axis C1 of the second massage section 42.

[0198] In this embodiment, among the 13 treatment protrusions 432 of each second massager 43, some of the treatment protrusions 432 on the side far from the plane P1 passing through the central axis C1 are inclined with respect to the axial direction of the output shaft 4551 so that the tip faces the plane P1 passing through the central axis C1 of the second massage unit 42. Specifically, five of the seven treatment protrusions 432 on the side far from the plane P1 passing through the central axis C1 are inclined with respect to the axial direction of the output shaft 4551 so that the tip faces the plane P1 passing through the central axis C1 of the second massage unit 42.

[0199] In this embodiment, the five inclined treatment projections 433, whose tips are inclined with respect to the axial direction of the output shaft 4551 so as to face the plane P1 passing through the central axis C1 of the second treatment section 42, are the first treatment projection 43A and the second treatment projection 43B. Here, the first treatment projection 43A and the second treatment projection 43B refer to the treatment projection 432 having the core part 4232 and the elastic part 42131, as described later.

[0200] In the present embodiment, as described above, the output shaft 4551 is inclined so that the tip faces the plane P1 passing through the central axis C1 of the second treatment unit 42. Therefore, the treatment protrusion 432 that is not inclined with respect to the axial direction of the output shaft 4551 is also inclined so that the tip faces the plane P1 passing through the central axis C1 of the second treatment unit 42 by approximately the same angle as the inclination angle of the output shaft 4551. In this way, the tip of the treatment protrusion 432 that is not inclined with respect to the axial direction of the output shaft 4551 also faces the plane P1 passing through the central axis C1.

[0201] Furthermore, in this embodiment, the five treatment protrusions 432 (inclined treatment protrusions 433) located on the side farther from the plane P1 passing through the central axis C1 are inclined at an angle greater than the inclination angle of the output shaft 4551 (in a more reclined state) so that their tips face the plane P1 passing through the central axis C1 of the second treatment section 42.

[0202] This allows the tips of the five treatment protrusions 432 (inclined treatment protrusions 433) located farther from the plane P1 passing through the central axis C1 to more reliably contact the scalp 1. In this manner, in the present embodiment, the tips of the treatment protrusions 432 provided on the second treatment attachment 40 are made to face the plane P1 passing through the central axis C1 at a more suitable angle, making it easier for the tips of the treatment protrusions 432 to fit the scalp 1.

[0203] With this configuration, no matter where the second massager 43 is in its reciprocating linear motion, the tip can be directed to the plane P1 passing through the central axis C1 of the second massager 42, and the massage projection 432 can be brought into contact with the scalp 1 at an angle close to perpendicular. As a result, the tip of the massage projection 432 can be brought into closer contact with the scalp 1 more reliably, and the scalp 1 can be given a feeling of use and effects more reliably.

[0204] In addition, the treatment protrusion 432 (inclined treatment protrusion 433), which is inclined with respect to the axial direction of the output shaft 4551 so that its tip faces the plane P1 passing through the central axis C1 of the second treatment section 42, is configured so that the inclination angle of the surface (outer peripheral surface 4322b) located on the opposite side to the plane P1 passing through the central axis C1 with respect to the axial direction of the output shaft 4551 is greater than the inclination angle of the treatment protrusion 432 itself with respect to the axial direction of the output shaft 4551.

[0205] In this embodiment, the inclination angle θ of the treatment projection 432 with respect to the vertical direction (the axial direction of the output shaft 4551) is set to about 8 degrees, and the inclination angle of the outer peripheral surface 4322b with respect to the axial direction of the output shaft 4551 is set to about 9 degrees. In this way, the shape of the treatment projection 432 is gradually tapered from the base portion 4321 side to the tip portion 4322.

[0206] In this way, if the inclination angle of the outer peripheral surface 4322b is set to be larger than the inclination angle θ of the treatment protrusion 432, the mold structure can be simplified when forming the treatment protrusion 432 using a mold. As a result, it is possible to improve the moldability of the treatment protrusion 432 and reduce costs.

[0207] Here, in this embodiment, the inclined treatment protrusion 433 has an inclined core portion 4332 that is inclined with respect to the axial direction of the output shaft 4551 so that its tip faces the plane P1 passing through the central axis C1 of the second treatment section 42.

[0208] The inclination angle of the surface (the outer peripheral surface 4332b of the inclined core portion 4332) located on the opposite side to the plane P1 passing through the central axis C1 with respect to the axial direction of the output shaft 4551 is set to be larger than the inclination angle of the inclined core portion 4332 with respect to the axial direction of the output shaft 4551, the inclination angle being inclined with respect to the axial direction of the output shaft 4551 so that the tip faces the plane P1 passing through the central axis C1 of the second treatment portion 42. In other words, the shape of the inclined core portion 4332 is gradually tapered from the base side toward the tip portion.

[0209] This makes it possible to simplify the structure of a die when forming the inclined core portion 4332 using the die.

[0210] Such an inclined core portion 4332 can be formed, for example, by using a mold 70 having an upper mold 71 and a lower mold 72 (see FIG. 42).

[0211] Here, in this embodiment, as described above, the shape of the inclined core part 4332 is gradually tapered from the base side toward the tip. Therefore, after the inclined core part 4332 is molded, the upper die 71 can be removed from the inclined core part 4332 simply by moving the upper die 71 upward (the direction in which the mold 70 is removed: the direction perpendicular to the parting line PL of the mold 70). In this way, in this embodiment, the upper die 71 can be configured without using an inclined pin or a slide mechanism. In this way, it is possible to simplify at least the configuration of the upper die 71. As a result, it is possible to improve the moldability of the inclined core part 4332 and reduce costs. Note that FIG. 42 is a diagram for explaining a method of forming a core part of the treatment projection of the second treatment element using a mold, and FIG. 42 shows an outline of the mold 70.

[0212] In this embodiment, the inclined treatment projection 433 has an inclined elastic portion 4331 inclined with respect to the axial direction of the output shaft 4551 so that the tip faces the plane P1 passing through the central axis C1 when covering the inclined core portion 4332. In this embodiment, the core portion 4232 constituting the inclined treatment projection 433 corresponds to the inclined core portion 4332, and the elastic portion 42131 constituting the inclined treatment projection 433 corresponds to the inclined elastic portion 4331.

[0213] The inclined elastic portion 4331 and the inclined core portion 4332 are formed from separate members, and the inclined elastic portion 4331 is configured so that when it covers the inclined core portion 4332, it elastically deforms and protrudes along the protruding direction of the inclined core portion 4332 (see Figures 40 and 41).

[0214] Specifically, the protruding direction of the inclined elastic portion 4331 when the inclined core portion 4332 is not covered is different from the protruding direction of the inclined core portion 4332. In this embodiment, when the inclined elastic portion 4331 does not cover the inclined core portion 4332, it protrudes in the direction in which the treatment element base 423 moves when the treatment element base 423 is attached to the rubber cover 421 (upward in FIG. 43). Note that the direction in which the treatment element base 423 moves when the treatment element base 423 is attached to the rubber cover 421 is approximately the same as the axial direction of the output shaft 4551 when the second treatment attachment 40 is assembled.

[0215] Therefore, when the massage element base 423 is attached to the rubber cover 421, the inclined elastic portion 4331 protruding along the axial direction of the output shaft 4551 is elastically deformed so that the tip thereof faces the plane P1 passing through the central axis C1 of the second massage unit 42. Then, the inclined core portion 4332 is covered in a state inclined along the protruding direction of the inclined core portion 4332.

[0216] This makes it possible to simplify the structure of a die when forming the inclined elastic portion 4331 using the die.

[0217] Such an inclined elastic portion 4331 can be formed, for example, by using a mold 80 having an upper mold 81 and a lower mold 82 (see FIG. 43).

[0218] In this embodiment, as described above, the inclined elastic portion 4331 is configured to protrude upward in the state shown in FIG. 43 when it does not cover the inclined core portion 4332 (natural state). Therefore, after molding of the inclined elastic portion 4331, the upper mold 81 and the lower mold 82 can be removed from the inclined elastic portion 4331 simply by moving the upper mold 81 upward and the lower mold 82 downward. Thus, in this embodiment, the protruding direction of the inclined elastic portion 4331 when it does not cover the inclined core portion 4332 (natural state) is approximately aligned with the removal direction of the mold 80 (direction perpendicular to the parting line PL of the mold 80). This allows the mold 80 to be configured without using an inclined pin or a slide mechanism, and the configuration of the mold 80 can be simplified. That is, the mold 80 for molding the inclined elastic portion 4331 can be configured simply. This makes it possible to improve the moldability of the inclined elastic portion 4331 and reduce costs. FIG. 43 is a diagram for explaining a method for forming the elastic portion of the massage projection of the second massage element using a metal mold, and FIG. 43 shows an outline of a metal mold 80. As shown in FIG.

[0219] In addition, the tip surface 4322a of the treatment protrusion 432 can be a surface that is inclined toward the plane P1 passing through the central axis C1. In other words, the tip surface 4322a of the treatment protrusion 432 can be an inclined surface or a curved surface that is inclined toward the plane P1 passing through the central axis C1.

[0220] If the tip surface 4322a of the treatment projection 432 is not inclined, as shown in Fig. 50, when the treatment projection 432 moves during use of the scalp care device 10, the treatment projection 432 bends and the corner of the tip surface 4322a is likely to hit. If the corner of the tip surface 4322a hits the scalp 1, the treatment projection 432 and the extended small projection 4322c cannot hit the scalp 1 at an appropriate angle, and the desired feeling of use and effect cannot be obtained.

[0221] On the other hand, when the tip surface 4322a of the treatment projection 432 is inclined, as shown in FIG. 50, even if the treatment projection 432 is moved during use of the scalp care device 10, the tip surface 4322a and the extended small projection 4322c can be more reliably applied to the scalp 1 at an appropriate angle. In this way, if the tip surface 4322a of the treatment projection 432 is an inclined surface or a curved surface inclined toward the plane P1 passing through the central axis C1, the tip of the treatment projection 432 can be easily applied to the scalp even if the treatment projection 432 is deformed during use of the scalp care device 10. That is, in an attachment that performs a sliding operation, it is also possible to improve the scalp tracking ability of the bristles (treatment projection 432) by forming the tip surface of the bristles (treatment projection 432) inclined or curved toward the plane P1 passing through the device central axis (central axis C1). Furthermore, by improving the scalp-following ability of the tip of the treatment protrusion 332, the scalp-following ability of the tip of the treatment protrusion 432 can be improved, making it possible to more reliably impart the feel and effect of use to the scalp 1.

[0222] In addition, by inclining or curving the tip surface of the bristles (treatment protrusions 332) toward the central axis of the device (central axis C1), it is possible to improve the scalp tracking ability of the bristles (treatment protrusions 332). Even in such a configuration, it is preferable to have a plurality of bristles (treatment protrusions 332) that are in close contact with the scalp 1 and care for the scalp 1.

[0223] In addition, the small extension protrusion 4322c provided on the tip portion 4322 of the treatment protrusion 432 can be inclined with respect to the axial direction of the output shaft 4551 so that the tip faces the plane P1 passing through the central axis C1.

[0224] This also improves the scalp-following ability of the tip of the treatment projection 432, making it possible to more reliably impart a feeling of use and effect to the scalp 1.

[0225] In addition, it is possible to incline the tip surface 4322a of the treatment projection 432 and also incline the small extension projection 4322c.

[0226] In this embodiment, each second massager 43 is provided with a plurality of massage projections 432. The massage projection 432 has a first massage projection 43A and a second massage projection 43B having a lower rigidity than the first massage projection 43A. In this embodiment, the rigidity of the first massage projection 43A and the second massage projection 43B is made different by making the amount of the core material portion 4232 present inside different.

[0227] At least one first treatment protrusion 43A is present in the region farther from the central axis C1 of the second treatment section 42 of the multiple second treatment members 43, and at least one second treatment protrusion 43B is present in the region closer to the central axis C1 of the second treatment section 42.

[0228] Furthermore, in this embodiment, the number of the first treatment projections 43A is greater in the region farther from the central axis C1 of the second treatment section 42. Also, the number of the second treatment projections 43B is greater in the region closer to the central axis C1 of the second treatment section 42. Thus, in this embodiment, the proportion of the first treatment projections 43A is higher in the region farther from the central axis C1 of the second treatment section 42 than in the region closer to the central axis C1 of the second treatment section 42.

[0229] In this way, the second treatment part 42 has a relatively soft second treatment projection 43B near the central axis C1, and the first treatment projection 43A has a relatively hard projection farther away. In this way, by having the first treatment projection 43A have a relatively hard projection farther away from the central axis C1 of the second treatment part 42, it becomes possible to apply the outer treatment projection (first treatment projection 43A) more strongly than the inner treatment projection (second treatment projection 43B). As a result, it becomes easier to feel that a wider area is being treated, and the feeling of use of the scalp care device 10 can be improved.

[0230] Thus, in this embodiment, the attachment (second treatment attachment 40) that performs the sliding action has a plurality of bristles (treatment projections 432) at the tip of the attachment (second treatment attachment 40) that come into close contact with the scalp 1 and care for the scalp 1. The bristles (treatment projections 432) are arranged so that the rigidity of the bristles (treatment projections 432) arranged on the outer periphery of the device is higher than that of the inner bristles (treatment projections 432).

[0231] Furthermore, in this embodiment, each second massage element 43 is provided with an auxiliary massage projection 43C in which no core portion 4232 exists, in addition to the first massage projection 43A and the second massage projection 43B.

[0232] In this embodiment, the tip 4322 of the treatment protrusion 432 has a shape that tapers toward a plane P1 passing through the central axis C1 of the second treatment section 42. Specifically, a C-face is formed on the inside of the tip 4322 of the treatment protrusion 432 to form a tapered portion 43221.

[0233] This makes it possible to ensure that hair can pass through easily, and prevents the treatment projections 432 from being hindered from contacting the scalp 1 by hair.

[0234] The attachment that performs the sliding action (second treatment attachment 40) may also have a plurality of bristles (treatment projections 432) that come into close contact with the scalp 1 and care for the scalp 1, and the base positions of the bristles (treatment projections 432) may be different for each bristles (treatment projections 432). Also, the heights of the bristles (treatment projections 432) may be different for each bristles (treatment projections 432).

[0235] Next, an example of a method of using the second treatment attachment 40 having such a configuration will be described.

[0236] First, the second treatment attachment 40 is attached to the main body 20, and the second treatment attachment side drive transmission part 452 is attached to the main body side drive transmission part 26. Then, in this state, the switch button 222 is pressed to drive the motor 235, thereby rotating the main body side drive transmission part 26.

[0237] In this way, the rotation of the main body side drive transmission section 26 is transmitted to the second treatment attachment side drive transmission section 452, and the second treatment attachment side drive transmission section 452 rotates together with the main body side drive transmission section 26. At this time, the gear section 4521 of the joint gear 451 attached to the second treatment attachment side drive transmission section 452 and the drive transmission gear 453 also rotate together with the second treatment attachment side drive transmission section 452.

[0238] As the gear portion 4521 and the drive transmission gear 453 rotate, the two output gears 454 rotate at a reduced speed.

[0239] In this manner, when the two output gears 454 rotate, the two rotary bases 455 connected to the two output gears 454, respectively, also rotate.

[0240] At this time, the eccentric shafts 4552 provided on the respective rotary bases 455 perform rotational motion along a plane P 3 perpendicular to the axial direction of the output shafts 4551 .

[0241] When the eccentric shaft 4552 rotates, the slide base 47 and the second massagers 43 attached to the eccentric shaft 4552 perform a reciprocating linear motion in accordance with the rotation of the eccentric shaft 4552. At this time, the massage protrusions 432 provided on each second massager 43 also perform a reciprocating linear motion in accordance with the reciprocating linear motion of the second massager 43.

[0242] In this state, if the treatment protrusions 432 are brought into contact with the scalp 1, the treatment protrusions 432 that make a reciprocating linear motion can perform care (scalp care) such as washing and massaging the scalp 1.

[0243] At this time, the output shaft 4551 is inclined so that the tip faces the central axis C1 of the second massage unit 42. Therefore, the drive plane (plane P3 perpendicular to the axial direction of the output shaft 4551) on which the second massager 43 having the function of a brush performs a reciprocating linear motion is inclined at a predetermined angle (about 15 degrees) with respect to the horizontal plane P4. This makes it easier to fit the second massager 43 to the scalp 1.

[0244] In this way, in the second treatment attachment (attachment that performs a sliding movement) 40 in this embodiment, the drive plane (plane P3 perpendicular to the axial direction of the output shaft 4551) of the brush (second treatment member 43) is inclined at an angle that makes it easy to contact the scalp 1 during operation.

[0245] The shape of the trajectory T1 drawn by the second massage element 43 performing the reciprocating motion along the plane P3 perpendicular to the axial direction of the output shaft 4551 can be various shapes.

[0246] For example, it is possible to provide a second massage element 43 that draws a trajectory T1 shown in Figures 53 to 60. In this case, it is preferable to move the second massage element 43 so that the timing of turning back is symmetrical.

[0247] FIG. 53 shows an example in which one second massager element 43 performs a reciprocating linear motion, and the other second massager element 43 performs a reciprocating motion in an arc shape.

[0248] 54, two second massage elements 43 are shown reciprocating in an arc shape. The two arc-shaped tracks T1 have the same size.

[0249] In Fig. 55, two of the second massagers 43 move linearly and the remaining two move in an arc. Here, the lengths of the two linear trajectories T1 are different, and the sizes of the two arc trajectories T1 are different.

[0250] 56 illustrates an example in which two second massage elements 43 reciprocate in an arc shape. The two arc-shaped trajectories T1 have different sizes.

[0251] 57 illustrates an example in which four second massage elements 43 perform radial reciprocating linear motion. Here, the lengths of the four linear trajectories T1 are different from each other.

[0252] FIG. 58 shows an example in which one second massager element 43 reciprocates in a curved shape that is curved without being reversed midway, and the other second massager element 43 reciprocates in a curved shape that is curved so as to be reversed midway.

[0253] FIG. 59 illustrates an example in which five second massage elements 43 perform reciprocating linear motion along the sides of a pentagon.

[0254] In Fig. 60, two of the second massagers 43 perform reciprocating linear motion, and the remaining two second massagers 43 perform rotational motion. Here, the lengths of the two linear trajectories T1 are the same, and the sizes of the two circumferential trajectories T1 are the same.

[0255] [Actions and Effects] The following describes the characteristic configurations of the scalp care devices shown in the above-described embodiment and the modified examples thereof, and the effects obtained thereby.

[0256] (1) The scalp care device 10 shown in the above embodiment and its modified example includes a main body 20 that houses a drive source 235 that drives an output shaft 4551. The scalp care device 10 also includes a second massage unit 42 having a plurality of second massage elements 43 that perform reciprocating motion along a plane P3 perpendicular to the axial direction of the output shaft 4551 by being driven by the output shaft 4551.

[0257] In this way, by making the multiple second massage elements 43 reciprocate along the plane P3 perpendicular to the axial direction of the output shaft 4551, the second massage elements 43 can be brought into contact with the scalp 1 more reliably.

[0258] (2) In addition, when multiple second massagers 43 reciprocate, the timing at which each second massager 43 reaches one end T1a of the trajectory T1 and reverses, and the timing at which each second massager 43 reaches the other end T1b and reverses, may be linked symmetrically with respect to a plane P1 passing through the central axis C1 of the second massage section 42.

[0259] This makes it possible to cancel out the reaction force received by the second massage element 43 when the scalp care device 10 is in use, thereby enabling more effective massage.

[0260] (3) Furthermore, the vector direction a at each point when the multiple second massage elements 43 reciprocate may be linked symmetrically with respect to the plane P1 passing through the central axis C1 of the second massage section .

[0261] This makes it possible to cancel out the reaction force received by the second massage element 43 when the scalp care device 10 is in use, thereby enabling more effective massage.

[0262] (4) Furthermore, the directions of increase and decrease in the distance between the plurality of second massage elements 43 and the plane P1 passing through the central axis C1 of the second massage section 42 may be linked in a plane-symmetrical manner.

[0263] This makes it possible to cancel out the reaction force received by the second massage element 43 when the scalp care device 10 is in use, thereby enabling more effective massage.

[0264] (5) Furthermore, the second massage elements 43 may be disposed at positions that are symmetrical with respect to the plane P1 that passes through the central axis C1 of the second massage section .

[0265] This simplifies the configuration of the mechanism that transmits the drive of the motor (drive source) 235 to the multiple second massage elements 43. As a result, the scalp care device 10 can be made smaller in size.

[0266] (6) Furthermore, the second massage elements 43 may be configured to perform reciprocating linear motion along a plane P3 perpendicular to the axial direction of the output shaft 4551.

[0267] This allows the second massage element 43 to come into contact with the scalp 1 more reliably while simplifying the configuration.

[0268] (7) Furthermore, at least any one of the plurality of second massage elements 43 may be connected to an output shaft 4551 that is inclined so that the tip thereof faces the central axis C1 of the second massage section .

[0269] This makes it easier for the second massage element 43 to fit the convex curved surface of the scalp 1, allowing for more effective massage.

[0270] (8) Furthermore, the multiple second massagers 43 may have multiple treatment protrusions 432. Furthermore, the treatment protrusion 432 may have a first treatment protrusion 43A and a second treatment protrusion 43B having a lower rigidity than the first treatment protrusion 43A. At least one first treatment protrusion 43A may be present in a region of the second massage section 42 of the multiple second massagers 43 that is farther from the central axis C1, and at least one second treatment protrusion 43B may be present in a region of the second massage section 42 that is closer to the central axis C1.

[0271] In this way, the second treatment part 42 has a relatively soft second treatment protrusion 43B near the central axis C1, and the first treatment protrusion 43A has a relatively hard protrusion farther away. In this way, if the first treatment protrusion 43A has a relatively hard protrusion farther away from the central axis C1 of the second treatment part 42, the outer treatment protrusion (first treatment protrusion 43A) can be applied more strongly than the inner treatment protrusion (second treatment protrusion 43B). As a result, it becomes easier to feel that a wider area is being treated, and the feeling of use of the scalp care device 10 can be improved.

[0272] (9) In addition, the tip portion 4322 of the treatment projection 432 may have a shape that tapers toward the plane P1 passing through the central axis C1 of the second treatment portion .

[0273] This makes it possible to ensure that hair can pass through easily, and prevents the treatment projections 432 from being hindered from contacting the scalp 1 by hair.

[0274] (10) Furthermore, the tip surface 4322a of the treatment protrusion 432 may be a surface that is inclined toward the plane P1 passing through the central axis C1 of the second treatment portion .

[0275] In this way, even if the treatment projection 432 is deformed during use of the scalp care device 10, the tip of the treatment projection 432 can be easily applied to the scalp. As a result, the scalp tracking ability of the tip of the treatment projection 432 can be improved, and the feeling of use and effect can be more reliably imparted to the scalp 1.

[0276] (11) In addition, a small extension protrusion 4322c may be provided on the tip portion 4322 of the treatment protrusion 432. The small extension protrusion 4322c may be inclined with respect to the axial direction of the output shaft 4551 so that the tip thereof faces the plane P1 passing through the central axis C1 of the second treatment section 42.

[0277] This also improves the scalp-following ability of the tip of the treatment projection 432, making it possible to more reliably impart a feeling of use and effect to the scalp 1.

[0278] (12) In addition, the inclination angle of the surface (outer peripheral surface 4322b) located on the opposite side of the plane P1 passing through the central axis C1 of the second treatment section 42 with respect to the axial direction of the output shaft 4551 may be made larger than the inclination angle of the treatment protrusion 432 with respect to the axial direction of the output shaft 4551.

[0279] In this way, if the inclination angle of the outer peripheral surface 4322b is set to be larger than the inclination angle of the treatment protrusion 432, the mold structure can be simplified when forming the treatment protrusion 432 using a mold. As a result, it is possible to improve the moldability of the treatment protrusion 432 and reduce costs.

[0280] (13) The treatment projection 432 may have a core portion 4232 and an elastic portion 42131 that covers the core portion 4232. The core portion 4232 and the elastic portion 42131 may be formed of separate members. The core portion 4232 may have an inclined core portion 4332 that is inclined with respect to the axial direction of the output shaft 4551 so that the tip of the core portion 4232 faces the plane P1 passing through the central axis C1 of the second treatment portion 42. The elastic portion 42131 may have an inclined elastic portion 4331 that is inclined with respect to the axial direction of the output shaft 4551 so that the tip of the elastic portion 42131 faces the plane P1 passing through the central axis C1 in a state in which the elastic portion 42131 covers the inclined core portion 4332. The inclined elastic portion 4331 may be configured to protrude along the protruding direction of the inclined core portion 4332 by elastically deforming when covering the inclined core portion 4332.

[0281] In this way, it is possible to simplify the configuration of the die for molding the elastic portion 42131 even when the elastic portion 42131 has the inclined elastic portion 4331. Therefore, it is possible to improve the moldability of the elastic portion 42131 and reduce costs.

[0282] [others] The scalp care device according to the present disclosure has been described above, but it is not limited to this description, and it will be obvious to those skilled in the art that various modifications and improvements are possible.

[0283] For example, it is possible to make a scalp care device by appropriately combining the configurations shown in the above-mentioned embodiment and its modified examples.

[0284] In the above embodiment and its modified example, various attachments are attached to one type of main body 20, but it is also possible to provide multiple types of main body having different rotary motor performance or rechargeable battery capacity. That is, it is also possible for the scalp care device 10 to have multiple types of main body having a common main body side drive transmission unit.

[0285] In addition, in the above embodiment and its modified example, the scalp care device 10 is detachably attached to the main body 20, the second treatment attachment 40 having the second treatment element 43 that reciprocates along the plane P3 perpendicular to the axial direction of the output shaft 4551. However, the configuration of the scalp care device 10 is not limited to this, and it is also possible to make a scalp care device in which only the treatment part is detachable. It is also possible to make a scalp care device in which the main body and the treatment part are integrated (the treatment part cannot be removed from the main body).

[0286] In the above embodiment and its modified example, the second massager 43 has an inclined treatment protrusion 433 inclined with respect to the axial direction of the output shaft 4551 so that the tip faces the plane P1 passing through the central axis C1 of the second massage section 42, but is not limited to such a configuration. For example, the second massager 43 can have a configuration having an inclined treatment protrusion 433 inclined with respect to the axial direction of the output shaft 4551 so that the tip faces the central axis C1 of the second massage section 42.

[0287] In addition, the specifications of the treatment element, treatment protrusions, and other details (shape, size, layout, etc.) can be changed as appropriate. [Industrial Applicability]

[0288] As described above, the scalp care device according to the present disclosure enables the treatment element to come into contact with the scalp more reliably, and can be used in a variety of scalp care devices, including those for home and commercial use. [Explanation of symbols]

[0289] 10 Scalp care device 20 Main body 235 Motor (Drive source) 42 2nd Treatment Department (Treatment Department) 42131 Elastic part 4232 Core part 43 2nd therapist (therapist) 432 Treatment protrusion 4322 Tip 4322a Tip surface 4322b Outer surface 4322c Extending small protrusion 4331 Inclined elastic part 4332 Inclined core section 43A First treatment protrusion 43B 2nd treatment protrusion C1 center axis P1 Plane passing through the central axis P3 Plane perpendicular to the output shaft T1 trajectory T1a one end T1b other end a Vector direction

Claims

1. A main body portion accommodating a drive source for driving an output shaft; A massage unit having a plurality of massage elements that reciprocate along a plane perpendicular to the axial direction of the output shaft by being driven by the output shaft; Equipped with The plurality of massage elements reciprocate along a plane perpendicular to the axial direction of the output shaft so that one end and the other end of a trajectory drawn by each massage element are at different positions, Each of the plurality of massage elements has a plurality of massage projections, The plurality of massagers reciprocate so that the plurality of massage projections move in parallel along a plane perpendicular to the axial direction of the output shaft, A pair of massagers among the plurality of massagers are connected to an output shaft inclined so that a tip thereof faces a central axis of the massage unit, and perform a reciprocating motion while approaching and moving away from each other, The treatment projection has a first treatment projection and a second treatment projection having a lower rigidity than the first treatment projection, At least one of the first treatment protrusions is present in an area of ​​the treatment part of the plurality of treatment elements farther from the central axis thereof, and at least one of the second treatment protrusions is present in an area of ​​the treatment part closer to the central axis thereof. Scalp care device.

2. The timing at which each of the massagers reaches one end of the trajectory and reverses when reciprocating, and the timing at which each of the massagers reaches the other end and reverses are symmetrically linked with respect to a plane passing through the central axis of the massage unit. A scalp care device according to claim 1.

3. The vector directions of the vectors indicating the moving directions at each point during reciprocating motion of the plurality of massagers are linked symmetrically with respect to a plane passing through the central axis of the massage unit. A scalp care device according to claim 1 or 2.

4. The plurality of massagers are linked in a plane symmetrical manner in the direction of increase and decrease in distance from a plane passing through the central axis of the massage portion. A scalp care device according to any one of claims 1 to 3.

5. The plurality of massagers are arranged at positions that are symmetrical with respect to a plane passing through the central axis of the massage unit. A scalp care device according to any one of claims 1 to 3.

6. The plurality of massagers perform reciprocating linear motion along a plane perpendicular to the axial direction of the output shaft. A scalp care device according to any one of claims 1 to 5.

7. The tip of the treatment protrusion is tapered toward a plane passing through the central axis of the treatment part. A scalp care device according to any one of claims 1 to 6.

8. A tip surface is formed at the tip of the treatment protrusion, and the tip surface is a surface that is inclined toward a plane passing through the central axis of the treatment part. A scalp care device according to any one of claims 1 to 7.

9. A tip surface is formed at the tip of the treatment protrusion, and an extending small protrusion is provided on the tip surface, The small extension protrusion is inclined with respect to the axial direction of the output shaft so that the tip of the small extension protrusion faces a plane passing through the central axis of the treatment unit. A scalp care device according to any one of claims 1 to 8.

10. The inclination angle of the surface located on the opposite side to the plane passing through the central axis of the treatment unit with respect to the axial direction of the output shaft is larger than the inclination angle of the treatment projection with respect to the axial direction of the output shaft. A scalp care device according to any one of claims 1 to 9.

11. The treatment projection has a core portion and an elastic portion covering the core portion, The core portion and the elastic portion are formed of separate members, the core portion has an inclined core portion inclined with respect to the axial direction of the output shaft so that a tip thereof faces a plane passing through a central axis of the treatment portion, and the elastic portion has an inclined elastic portion inclined with respect to the axial direction of the output shaft so that a tip thereof faces a plane passing through the central axis when the elastic portion covers the inclined core portion, The inclined elastic portion is configured to protrude along a protruding direction of the inclined core portion by elastically deforming when covering the inclined core portion. A scalp care device according to any one of claims 1 to 10.

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