CN110584969A

CN110584969A - Scalp care device

Info

Publication number: CN110584969A
Application number: CN201910314642.1A
Authority: CN
Inventors: 小野秀夫
Original assignee: Panasonic Intellectual Property Management Co Ltd
Current assignee: Panasonic Intellectual Property Management Co Ltd
Priority date: 2018-06-13
Filing date: 2019-04-18
Publication date: 2019-12-20
Anticipated expiration: 2039-04-18
Also published as: JP7033712B2; JP2019213743A; CN110584969B

Abstract

The invention provides a scalp care device. The scalp care device includes a main body for housing a drive source and a head assembled to the main body. The head includes at least four output shafts, at least four massage members, and an inlet and outlet portion. At least four output shafts are driven by the drive source. At least four massage members are provided corresponding to respective ones of the at least four output shafts, and are driven in a direction orthogonal to the respective ones of the plurality of output shafts. The access portion is used for enabling at least one of the at least four massage elements to extend out of or enter the head. The in-out portion has a force applying member that applies a force to the in-out massage member in a direction in which the in-out massage member protrudes.

Description

Scalp care device

Technical Field

The present disclosure relates to a scalp care device that applies stimulation to a scalp using a massage protrusion to perform maintenance of the scalp.

Background

Conventionally, there is known a scalp care device which applies stimulation to a scalp by operating a massage tool which is brought into contact with the scalp of a human body (see, for example, japanese patent No. 6158719).

Disclosure of Invention

Recently, scalp care apparatuses have been sought which improve the effects of scalp care such as a cleansing effect and a massage effect. The purpose of the present disclosure is to provide a scalp care device that can improve the effect of scalp care.

A scalp care device according to one aspect of the present disclosure includes a main body for housing a drive source and a head assembled to the main body. The head includes at least four output shafts, at least four massage members, and an inlet and outlet portion.

At least four output shafts are driven by the drive source. At least four massage members are provided corresponding to respective ones of the at least four output shafts, and are driven in a direction orthogonal to the respective ones of the four output shafts. The access portion is used for enabling at least one of the at least four massage elements to extend out of or enter the head. The in-out portion has a force applying member that applies a force to the in-out massage member in a direction in which the in-out massage member protrudes.

By adopting the scalp nursing device, the scalp nursing effect can be improved.

Drawings

Fig. 1 is a perspective view of a scalp care apparatus according to an embodiment.

Fig. 2 is a plan view of the scalp care apparatus of the embodiment.

Fig. 3 is a sectional view of the scalp care apparatus of the embodiment.

Fig. 4 is a partially cut-away perspective sectional view of the scalp care device of the embodiment.

Fig. 5 is a sectional view showing a schematic configuration of the first massage unit.

Fig. 6 is a sectional view showing a schematic configuration of the first massage unit.

Fig. 7 is a sectional view showing a schematic configuration of the second massage part.

Fig. 8 is a sectional view showing a schematic configuration of the second massage part.

Fig. 9 is a sectional view showing a state where the second massage part shown in fig. 8 is pressed to the lowermost position.

Fig. 10 is a plan view showing the rear surface side of the gear unit.

Fig. 11 is a plan view showing a front surface side of the gear unit.

Fig. 12 is a schematic view showing the rotation range and the rotation direction of the first massage member and the second massage member.

Detailed Description

A scalp care device according to claim 1 of the present disclosure includes a main body for housing a drive source and a head assembled to the main body. The head includes at least four output shafts, at least four massage members, and an inlet and outlet portion. At least four output shafts are driven by the drive source. At least four massage members are provided corresponding to respective ones of the at least four output shafts, and are driven in a direction orthogonal to the respective ones of the four output shafts. The access portion is used for enabling at least one of the at least four massage elements to extend out of or enter the head. The in-out portion has a force applying member that applies a force to the in-out massage member in a direction in which the in-out massage member protrudes.

In a scalp care device according to claim 2 of the present disclosure, in addition to the first aspect, the head includes a base for transmitting power from the output shaft to the massage member. The inlet and outlet part is arranged between the inlet and outlet massage piece and the base.

In the scalp care device according to claim 3 of the present disclosure, in addition to the embodiment 2, the entrance and exit portion includes a support portion and a shaft body. The support part is mounted on the base and supports the massage part in a manner that the massage part can move in and out. The shaft is mounted on the base and guides the massage member to move in and out while penetrating the support part.

In the scalp care apparatus according to claim 4 of the present disclosure, in addition to the embodiment 3, the entry and exit massage device includes a hole into which the distal end portion of the shaft body is inserted.

A scalp care apparatus according to claim 5 of the present disclosure is the scalp care apparatus according to claim 3, further comprising a claw member provided between the support portion and the base to hold the support portion to the base so as to be rotatable with respect to the base, the claw member restricting movement of the support portion in an advancing and retracting direction. A gap is provided between the claw member and the support portion.

In the scalp care device according to claim 6 of the present disclosure, in addition to the embodiment 5, at least one of the base and the claw member is made of metal.

In the scalp care device according to claim 7 of the present disclosure, in addition to the first aspect, in the head plan view, the plurality of massage devices, other than the in-and-out massage device, of the at least four massage devices are arranged in a polygonal shape. The in-and-out massage members are arranged between the other plurality of massage members at the head.

Hereinafter, a scalp care apparatus 10 according to an embodiment of the present disclosure will be described with reference to the drawings.

[ Structure ]

Fig. 1 is a perspective view of a scalp care apparatus 10. Fig. 2 is a top view of the scalp care device 10. Fig. 3 is a cross-sectional view of the scalp care device 10 taken along line 3-3 of fig. 2. Fig. 4 is a partially cut-away perspective cross-sectional view of the scalp care device 10 taken along line 3-3 of fig. 2.

As shown in fig. 1 to 3, the scalp care apparatus 10 includes a main body 30 and a head 40 assembled to the main body 30. The main body 30 includes a hollow housing 31. The case 31 houses a battery 33, a circuit board 34, a gear unit 35, a drive source 32 (see fig. 10) for driving the head 40, and the like.

The head 40 is assembled to one end of the housing 31. The user grips the other end portion of the housing 31. The other end portion of the housing 31 has a curved surface shape of a convex shape which is smooth as a whole so as to be easily held by a user. The housing 31 is provided with a power button (not shown) for turning on or off the power supply.

The drive source 32 is a motor for rotating the plurality of output shafts 71, 81 of the head 40. The gear unit 35 transmits the power of the drive source 32 to the output shafts 71, 81. The output shafts 71, 81 and the gear unit 35 will be explained later.

The battery 33 is a rechargeable battery for supplying electric power to the drive source 32. The circuit board 34 is mounted with a plurality of circuit components (not shown) for operating the drive source 32. The plurality of circuit components includes a microcomputer. The microcomputer corresponds to a control unit that controls the entire scalp care apparatus 10.

The plurality of circuit components include switching elements. The switching element is used to turn on or off the power supply. When the power button is pressed, the switching element outputs a control signal for starting or stopping the supply of electric power from the battery to the control unit. The control unit starts or stops the supply of electric power to the drive source 32 based on the control signal, and operates or stops the drive source 32.

The head 40 includes a plurality of massage members (first massage member 73, second massage member 83) for applying stimulation to the scalp of the user. The head 40 has a substantially rectangular shape in plan view (see fig. 2). The corners of the head 40 have a rounded shape in plan view.

The head portion 40 includes a cover portion 48 and six massaging portions 60. The cover 48 forms the outer surface of the head 40. The lid 48 is detachably attached to the main body 30. A part of the cover portion 48 constitutes a part of the massage members (the first massage member 73 and the second massage member 83) included in each of the six massage portions 60. The cover 48 is formed of a flexible material such as silicone rubber.

The six massage parts 60 include four first massage parts 70 and two second massage parts 80. The first massage part 70 is disposed near the corner of the head part 40. The second massage part 80 is disposed between the two first massage parts 70 arranged along the long side of the head part 40. That is, the six massage units 60 are arranged in a matrix of two rows and three rows. The first massage parts 70 are arranged in the first row and the third row, and the second massage parts 80 are arranged in the second row.

Hereinafter, portions of the head 40 corresponding to the first row, the second row, and the third row are referred to as a first portion 401, a second portion 402, and a third portion 403, respectively.

The first portion 401 and the third portion 403 are disposed so as to sandwich the second portion 402. The surfaces of the first portion 401 and the third portion 403 are inclined with respect to the surface of the second portion 402 such that the surfaces of the first portion 401, the second portion 402, and the third portion 403 are entirely concave. Specifically, the angle formed between the surface of the first portion 401 and the surface of the second portion 402 is 90 degrees or more and less than 180 degrees. Similarly, the angle formed by the surface of the third portion 403 and the surface of the second portion 402 is 90 degrees or more and less than 180 degrees.

Four first recesses 61 (see fig. 2) having a circular shape are provided in the first portion 401 and the third portion 403 in plan view. The four first recesses 61 respectively receive the four first massage portions 70. The lid portion 48 constitutes the inner peripheral surface and the bottom portion of the first recess 61.

In a plan view, two circular second recesses 62 are provided in the second portion 402 (see fig. 2). The two second recesses 62 respectively receive the two second massage portions 80. The lid portion 48 constitutes the inner peripheral surface and the bottom portion of the second recess 62.

Next, the first massage part 70 will be described. Fig. 5 and 6 are sectional views showing a schematic configuration of the first massage unit 70. Fig. 6 is a sectional view taken along line 6-6 of fig. 5.

As shown in fig. 5 and 6, the first massage part 70 includes an output shaft 71, a base 72, and a first massage member 73.

The output shaft 71 is a rotary shaft that can be driven and rotated by the drive source 32. The output shaft 71 is rotatably coupled to the gear unit 35 and rotates by the power of the drive source 32 transmitted from the gear unit 35. The output shaft 71 is provided at one end of the base 72, and is a rotary shaft for rotating the base 72.

The base 72 is a link member that transmits power from the output shaft 71 to the first massage member 73 to eccentrically rotate the first massage member 73. In the present embodiment, the base 72 is formed of metal, but may be formed of resin. The pedestal 72 integrally has a coupling portion 721 and a base portion 722.

The coupling portion 721 is a portion protruding from the bottom of the base portion 722, and is fixed to the output shaft 71. The base portion 722 is a portion to which the first massage member 73 is attached, and is formed in a substantially cylindrical shape. A groove portion 724 is provided in the circumferential direction on the outer circumferential surface of the base portion 722, and the groove portion 724 accommodates a metal wire spring 723. The filament spring 723 may be made of resin.

The shaft body 725 protrudes from the upper surface of the base portion 722. When the shaft body 725 and the filament spring 723 are engaged with the first massage member 73, the first massage member 73 is attached to the base portion 722. When the first massage member 73 is pulled out from the shaft body 725 against the urging force of the filament spring 723, the first massage member 73 can be detached from the base portion 722. That is, the first massage member 73 is detachably attached to the base portion 722.

The shaft body 725 extends through the center of the bottom of the first massage member 73, which can be said to be the axis of the first massage member 73. The shaft body 725 is disposed at a position different from the output shaft 71 as viewed in the axial direction. The shaft body 725 and the output shaft 71 are arranged in parallel with each other. Therefore, when the base 72 rotates by the rotation of the output shaft 71, the first massage member 73 eccentrically rotates with respect to the output shaft 71. Thereby, the first massage member 73 is driven in parallel with the driving plane H1 orthogonal to the output shaft 71.

The first massage member 73 integrally includes a base portion 731 and a plurality of massage protrusions 732. The plurality of massage protrusions 732 are a part of the cover 48, and are formed of a flexible material such as silicone rubber. The base portion 731 is formed of resin having higher rigidity than the massage protrusions 732. The base portion 731 and the plurality of massage protrusions 732 (i.e., the cover portion 48) are integrally formed by two-color molding.

The base portion 731 and the massage protrusions 732 are explained below. The base portion 731 is a substantially cylindrical member. A plurality of projections (not shown) serving as axes of the plurality of massage projections 732 are provided on the top surface of the base portion 731. An insertion recess 733 into which the base portion 722 of the pedestal 72 is inserted is provided on the bottom surface of the base portion 731. A through-hole 734 is formed in the top surface of the insertion recess 733. The shaft body 725 has a distal end portion penetrating the through hole 734. A groove 735 that engages with the filament spring 723 is provided in the circumferential direction on the inner circumferential surface of the insertion recess 733.

The filament spring 723 is disposed in a space formed by the groove portion 724 of the base portion 722 and the groove portion 735 of the base portion 731. The filament spring 723 restricts assembly of the base portion 722 with the base portion 731. Specifically, the filament spring 723 restricts relative movement of the base portion 722 and the base portion 731 in the axial direction of the shaft body 725, but does not restrict relative rotation of the two in the circumferential direction.

That is, the base portion 731 is rotatable with respect to the base portion 722 at the time of assembly. To not restrict this rotation more than necessary, a gap S1 is provided between the filament spring 723 and the groove portion 735 of the base portion 731. Since friction is not easily generated between the filament spring 723 and the base portion 731 by the gap S1, the base portion 731 can be smoothly rotated with respect to the base portion 722.

The plurality of massage protrusions 732 are provided to cover the plurality of protrusions of the base portion 731, respectively. The tip of the massage protrusion 732 comes into contact with the scalp of the user. As described above, the massage protrusions 732 are formed of a material having flexibility. Therefore, when the first massage member 73 is eccentrically rotated in a state where the first massage member 73 is brought into contact with the scalp, the scalp can be stimulated without being damaged by the elastic deformation of the massage protrusions 732.

The follow-up deforming portion 49 is provided around the plurality of massage protrusions 732 as a part of the cover portion 48. The follow-up deforming portion 49 is a portion where the first concave portion 61 is formed. That is, the follow-up deforming portion 49 is recessed in the direction opposite to the projecting direction of the massage protrusions 732, and is configured to be elastically deformable in the direction parallel to the driving plane H1. Therefore, when the first massage member 73 is driven to eccentrically rotate in parallel with the driving plane H1, the follow-up deforming portion 49 elastically deforms and follows the movement of the first massage member 73. That is, the follow-up deforming portion 49 allows the eccentric rotation of the first massage member 73.

As shown in fig. 3, the pair of first massage parts 70 disposed at the first portion 401 are disposed such that their driving planes H1 are parallel to the surface of the first portion 401. The pair of first massage parts 70 disposed at the third portion 403 are arranged such that their driving planes H1 are parallel to the surface of the third portion 403.

Next, the second massage unit 80 will be described. Fig. 7 and 8 are sectional views showing a schematic configuration of the second massage part 80. Fig. 8 is a cross-sectional view taken along line 8-8 of fig. 7.

As shown in fig. 7 and 8, the second massage part 80 includes an output shaft 81, a base 82, a second massage member 83, and an access part 90.

The output shaft 81 is a rotary shaft that can be driven and rotated by the drive source 32. The output shaft 81 is rotatably coupled to the gear unit 35 and rotates by the power of the drive source 32 transmitted from the gear unit 35. The output shaft 81 is also a rotary shaft provided at one end of the base 82 for rotating the base 82.

The base 82 is a link member that transmits power from the output shaft 81 to the second massage member 83 via the inlet/outlet portion 90, thereby eccentrically rotating the second massage member 83. In the present embodiment, the base 82 is made of metal, but may be made of resin. The pedestal 82 integrally has a coupling portion 821 and a base portion 822.

The coupling portion 821 is a portion protruding from the bottom of the base portion 822, and the output shaft 81 is fixed to the coupling portion 821. Base portion 822 is a portion to which inlet and outlet portion 90 is attached, and is formed in a substantially cylindrical shape. A groove portion 824 is provided in the circumferential direction on the outer circumferential surface of the base portion 822, and a metal pawl member 823 such as a wire spring is housed in the groove portion 824. The claw member 823 may be made of resin.

The second massaging member 83 integrally has a base portion 831 and a plurality of massaging protrusions 832. The plurality of massaging protrusions 832 are a part of the cover portion 48, and are formed of a flexible material such as silicone rubber. The base 831 is formed of resin having higher rigidity than the massage protrusions 832. The base 831 and the plurality of massage protrusions 832 (i.e., the cover 48) are integrally configured by two-color molding.

Hereinafter, the base 831 and the massage protrusion 832 are explained. The base 831 is a substantially cylindrical member. A plurality of protrusions 833 serving as axes of the plurality of massage protrusions 832 are provided on the top surface of the base 831. A recess 834 into which the inlet/outlet portion 90 enters and exits is provided in the bottom surface of the base portion 831. An aperture portion 835 is formed on the top surface of the recessed portion 834. The shaft body 92 provided in the inlet/outlet section 90 has a distal end inserted into the hole 835. The hole portion 835 extends in the moving direction of the access portion 90.

The hole 835 and the shaft 92 are provided inside the protrusion 833 disposed at the center of the second massage member 83. Therefore, the shaft body 92 can be said to be the axis of the second massage member 83. The hole 835 and the shaft body 92 are disposed at positions different from the output shaft 81 when viewed in the axial direction. The shaft body 92 and the output shaft 81 are arranged in parallel to each other. Therefore, when the base 82 rotates by the rotation of the output shaft 81, the second massage member 83 eccentrically rotates with respect to the output shaft 81. Thereby, the second massage member 83 is driven in parallel with the driving plane H2 orthogonal to the output shaft 81.

A wall portion of the recess 834 is provided with a guide port 836 that opens in an advancing direction of the advancing portion 90 (hereinafter referred to as an advancing direction). A plurality of guide ports 836 are provided in the circumferential direction of the recessed portion 834. Both ends of the guide port 836 in the advancing and retreating direction are closed. The guide port 836 is a portion for guiding the support portion 91 provided in the entry and exit portion 90 in the entry and exit direction.

The plurality of massage protrusions 832 are provided to cover the plurality of protrusions 833 of the base portion 831, respectively. The tip of the massage protrusion 832 is a portion that comes into contact with the scalp of the user. As described above, the massage protrusions 832 are formed of a material having flexibility. Therefore, when the second massage member 83 is eccentrically rotated in a state where the second massage member 83 is brought into contact with the scalp, the scalp can be stimulated by the elastic deformation of the massage protrusions 832 without damaging the scalp.

A follow-up deforming portion 50 is provided around the plurality of massaging protrusions 832 as a part of the cover portion 48. The follow-up deformation portion 50 is a portion where the second concave portion 62 is formed. That is, the follow-up deforming portion 50 is recessed in a direction opposite to the projecting direction of the massage protrusions 832, and is configured to be elastically deformable in a direction parallel to the driving plane H2. Therefore, when the second massage member 83 is driven to rotate eccentrically in parallel with the driving plane H2, the follow-up deforming portion 50 elastically deforms and follows the movement of the second massage member 83. That is, the follow-up deforming portion 50 allows the eccentric rotation of the second massage member 83.

The follow-up deforming portion 50 is also configured to be elastically deformable in a direction (advancing/retreating direction) perpendicular to the driving plane H2. The second massaging element 83 protrudes from the head 40 or enters the head 40, as will be described later. The follow-up deforming portion 50 elastically deforms following the movement of the second massage member 83 to go in and out. That is, the follow-up deforming portion 50 allows the second massage member 83 to move in and out.

The inlet/outlet portion 90 is provided between the second massage member 83 and the base 82. The access portion 90 is used to extend the second massage member 83 from the head 40 or into the head 40. That is, the second massaging element 83 is an example of an in-and-out massaging element that can protrude from the head 40 or enter the head 40. Specifically, the inlet/outlet portion 90 includes a support portion 91, a shaft body 92, and a biasing member 93.

The support portion 91 supports the second massage member 83 such that the second massage member 83 can move in and out with the axial direction of the shaft body 92 as the moving direction. The support portion 91 is formed in a substantially cylindrical shape. A bottom plate 901 is provided at an intermediate position of the support portion 91. A through hole 913 is formed in the center of the bottom plate 901. The first hole 911 and the second hole 912 are provided in the support portion 91 with the bottom plate 901 interposed therebetween.

The first hole 911 is provided at an end of the support portion 91 closer to the base portion 822. A base portion 822 of the chassis 82 is inserted into the first hole portion 911. A groove portion 914 is provided in the circumferential direction on the inner circumferential surface of the first hole portion 911. The claw member 823 engages with the groove 914.

The claw member 823 is disposed in a space formed by the groove portion 824 of the base portion 822 and the groove portion 914 of the support portion 91. The claw member 823 restricts assembly of the base portion 822 and the support portion 91. Specifically, the claw member 823 restricts relative movement of the base portion 822 and the support portion 91 in the advancing and retreating direction, but does not restrict relative rotation of the both in the circumferential direction.

That is, the support portion 91 is rotatable with respect to the base portion 822 at the time of assembly. In order not to restrict the rotation more than necessary, a gap S2 is provided between the claw member 823 and the groove portion 824 of the base portion 822. Since friction is less likely to occur between the claw member 823 and the base portion 822 due to the gap S2, the support portion 91 can be smoothly rotated with respect to the base portion 822.

When the supporting portion 91 is pulled out from the shaft body 92 against the urging force of the claw member 823, the second massage member 83 can be detached from the base portion 822. That is, the second massage member 83, the support portion 91, and the like are detachably attached to the base portion 822.

The second hole 912 is provided at the end of the support portion 91 on the second massage member 83 side. The shaft body 92 and the biasing member 93 are disposed in the second hole 912. The shaft body 92 is attached to the base portion 822 in a state of penetrating the through hole 913 of the bottom plate 901 and the biasing member 93. The tip end of the shaft 92 is disposed in the hole 835 of the second massage member 83. The tip end portion of the shaft body 92 is slidable in the hole portion 835 in the forward and backward direction. Thereby, the shaft body 92 guides the second massage member 83 to move in and out.

The urging member 93 is an elastic member such as a coil spring. The urging member 93 is disposed between the bottom plate 901 of the support portion 91 and the second massage tool 83 in the forward and backward direction. The urging member 93 urges the second massaging element 83 in a direction in which the second massaging element 83 protrudes.

A plurality of locking projections 915 are provided on the outer peripheral surface of the end portion of the support portion 91 on the second massage member 83 side. The plurality of locking projections 915 are arranged at positions corresponding to the plurality of guide ports 836 of the second massage member 83. The locking projection 915 is guided in the advancing and retreating direction by the guide port 836 in a state of being disposed in the guide port 836. The locking projection 915 slides on the inner circumferential surface of the guide opening 836 and is guided.

When the second massage member 83 is not in contact with the scalp (when no load is applied), the locking projection 915 is locked to the second massage member 83 in the guide opening 836. Therefore, the locking protrusion 915 prevents the second massage member 83 from being separated from the support portion 91 by the biasing force of the biasing member 93.

Fig. 9 is a cross-sectional view showing a state in which the second massage part 80 shown in fig. 8 is pressed to the lowermost position.

As shown in fig. 7 and 8, the second massage member 83 of the second massage part 80 is in the most protruding state when no load is applied. As shown in fig. 9, when the second massage member 83 abuts against the scalp, the second massage member 83 presses the biasing member 93 to approach the supporting portion 91. At this time, the locking projection 915 of the support portion 91 is guided by the guide opening 836 of the second massage member 83, and the second massage member 83 smoothly operates. As a result, the second massaging elements 83 enter the head 40.

The urging force of the urging member 93 always acts on the second massage member 83. Therefore, when the scalp care apparatus 10 moves on the scalp or the second massage member 83 eccentrically rotates, the second massage member 83 moves in and out following the shape of the scalp. This improves the close contact of the second massage members 83 with the scalp during massage.

When the scalp care apparatus 10 is separated from the scalp, the second massage members 83 protrude from the head 40 by the urging force of the urging member 93. At this time, the locking projection 915 of the support portion 91 is guided by the guide opening 836 of the second massage member 83, and the second massage member 83 smoothly operates.

As shown in fig. 3, the second massage part 80 is disposed such that the driving plane H2 is parallel to the surface of the second portion 402. As described above, the surfaces of the first and third portions 401 and 403 are inclined with respect to the surface of the second portion 402. Accordingly, the driving plane H1 of the first massage part 70 is inclined with respect to the driving plane H2 of the second massage part 80.

With this shape, the first and second massaging elements 73 and 83 are easily directed toward the scalp. This improves the close contact of the first massage members 73 and the second massage members 83 with the scalp. As a result, the scalp care effects such as the cleansing effect and the massage effect can be improved.

As described above, the shaft body 725 of the first massage member 73 is parallel to the output shaft 71. The shaft body 92 of the second massaging element 83 is parallel to the output shaft 81. Therefore, it is easy to direct the first and second massage members 73 and 83 toward the scalp. As a result, the first and second massage members 73 and 83 can be brought into close contact with the scalp, thereby improving the scalp care effect.

As shown in fig. 2, the first massage part 70 and the second massage part 80 are arranged line-symmetrically with respect to a center line (first center line L1) in the longitudinal direction of the head 40 in a plan view. Of the four first massage portions 70, the two first massage portions 70 disposed at the first portion 401 and the two first massage portions 70 disposed at the third portion 403 form two pairs of first massage portions 70 disposed with the first center line L1 interposed therebetween.

As shown in fig. 3, the pair of driving planes H1 of the pair of first massage parts 70 are line-symmetrically inclined with respect to the first center line L1. That is, the angle formed by the driving plane H1 of the first massage part 70 disposed at the first portion 401 and the driving plane H2 of the second massage part 80 is the same as the angle formed by the driving plane H1 of the first massage part 70 disposed at the third portion 403 and the driving plane H2 of the second massage part 80.

This shape equalizes the load applied to each of the first massage members 73 provided in the pair of first massage units 70. This stabilizes the scalp care apparatus 10 with respect to the scalp. As a result, the scalp care effect can be further improved.

Next, the gear unit 35 will be explained. As shown in fig. 3 and 4, the gear unit 35 is housed in the housing 31.

Fig. 10 is a plan view showing the back surface side of the gear unit 35. Fig. 11 is a plan view showing the front side of the gear unit 35. The "front surface" refers to a side of the housing 31 where one end of the head 40 is assembled, and the "rear surface" refers to a side of the other end of the housing 31 where a user grips. Arrows in fig. 10 and 11 indicate the rotation directions of the gears 701 to 716.

As shown in fig. 10 and 11, the gear unit 35 includes a motor base 351 and gears 701 to 716. The gears 701 to 716 form a power path for transmitting the power of the drive source 32 to the output shafts 71 and 81.

The motor base 351 is a flat plate disposed in the housing 31 (see fig. 3). The drive source 32 and the battery 33 are supported on the rear surface of the motor base 351. On the back surface of the motor base 351, 3 gears (gear 701 to gear 703) are rotatably supported.

The gear 701 meshes with a gear 321 attached to the rotation shaft of the drive source 32. Gear 702 meshes with gear 701. Gear 703 meshes with gear 702. The rotational shaft of the gear 703 protrudes toward the front side of the motor base 351.

The motor base 351 is rotatably supported by 13 gears (gear 704 to gear 716). The gear 704 is attached to a rotating shaft of the gear 703 that protrudes to the front side. Gear 705 meshes with gear 704. Gear 706 meshes with gear 705. Gear 707 meshes with gear 706. Gear 708 meshes with gear 706.

Gear 709 meshes with gear 705. Gear 710 meshes with gear 709. Gear 711 meshes with gear 710. Gear 712 meshes with gear 710. Gear 713 meshes with gear 710. Gear 714 meshes with gear 713. Gear 715 meshes with gear 714. Gear 716 meshes with gear 714.

The axes of rotation of the gears 704, 705, 706, 709, 710, 711, 712, 713, 714 are parallel to each other.

The rotation axes of the gears 707 and 708 are the output shafts 71 of the pair of first massage units 70 disposed at the third portion 403. Gears 707, 708 are helical gears. The rotation axes of the gears 707 and 708 are inclined with respect to the rotation axis of the gear 706 so as to correspond to the driving plane H1 of the first massage unit 70 disposed at the third portion 403. That is, the rotation axes of the gears 707 and 708 are orthogonal to the driving plane H1 of the first massage unit 70 disposed at the third portion 403.

The rotation axes of the gears 715 and 716 are the output shafts 71 of the pair of first massage units 70 disposed at the first portion 401. Gears 715, 716 are helical gears. The rotation axes of the gears 715 and 716 are inclined with respect to the rotation axis of the gear 714 so as to correspond to the driving plane H1 of the first massage unit 70 disposed at the first portion 401. That is, the rotation axes of the gears 715 and 716 are orthogonal to the driving plane H1 of the first massage unit 70 disposed at the first portion 401.

As described above, the gears 707, 708, 715, and 716 are helical gears for transmitting power to the output shaft 71 inclined in accordance with the driving plane H1. This enables power to be transmitted to the inclined output shaft 71 with a simple configuration. The gear unit 35 can be miniaturized to miniaturize the scalp care apparatus 10.

The rotation axes of the gears 711 and 712 are the output shafts 81 of the pair of second massage units 80 disposed at the second portion 402. The rotation axes of the gears 711 and 712 are parallel to the rotation axis of the gear 710, and are orthogonal to the driving plane H2 of the second massage unit 80 disposed at the second portion 402.

The number, size, rotation direction, and meshing combination of the gears of the gear unit 35 are determined so that the rotations of the output shafts 71, 81 satisfy the following conditions.

Fig. 12 is a schematic view of the head 40 in a plan view, showing the rotation range and the rotation direction of the first and second massage members 73 and 83. In fig. 12, the inclination of the first massage member 73 is omitted for convenience of explanation. That is, in fig. 12, the axial centers of the first and second massaging elements 73 and 83 are parallel to each other.

Fig. 12 shows a center line (first center line L1) in the longitudinal direction of the head 40 in a plan view and a center line (second center line L2) in the width direction of the head 40 in a plan view.

In fig. 12, the first rotation range R1 and the second rotation range R2 are indicated by thick lines. The first rotation range R1 is a range in which the first massage member 73 eccentrically rotates, and the second rotation range R2 is a range in which the second massage member 83 eccentrically rotates.

In fig. 12, the rotation directions of the first massage members 73 and the second massage members 83 are indicated by arrows (Y1 to Y6). The rotation center C1 of the first rotation range R1 corresponds to the output shaft 71 of the first massage part 70. The rotation center C2 of the second rotation range R2 corresponds to the output shaft 81 of the second massage part 80.

The positions of the first and second massage members 73 and 83 at predetermined timings are shown inside the first and second rotation ranges R1 and R2.

Specifically, first, the first and second massage members 73, 83 are located at the first positions 73a, 83a indicated by solid lines. After rotating 90 degrees from the first positions 73a, 83a, the first and second massaging elements 73, 83 are in the second positions 73b, 83b indicated in dashed lines. After rotating 90 degrees from the second positions 73b, 83b, the first and second massaging members 73, 83 are in a third position 73c, 83c, indicated by a single-dot dashed line. After rotating 90 degrees from the third positions 73c, 83c, the first and second massaging elements 73, 83 are located at fourth positions 73d, 83d indicated by the two-dot chain lines. The first and second massage members 73 and 83 pass through the first, second, third, and fourth positions in sequence and repeat eccentric rotation.

The first and second massaging members 73 and 83 eccentrically rotate at the same rotational speed. Therefore, the timing of passing through the first, second, third and fourth positions 73a, 73b, 73c and 73d is the same for all the first massage members 73. The time of passing the first position 83a, the second position 83b, the third position 83c and the fourth position 83d is the same for all the second massaging elements 83.

The four first massage members 73 are disposed near the corners of the head 40. In fig. 12, the pair of first massage parts 70 disposed on the upper side is referred to as a first group of first massage members 73, and the pair of first massage members 73 disposed on the lower side is referred to as a second group of first massage members 73.

The first group of first massage members 73 is disposed with the first center line L1 in between. In the first group of first massage members 73, the rotation directions Y1, Y2 of the two first massage members 73 are opposite to each other. Specifically, in fig. 12, the left first massage member 73 of the first group of first massage members 73 eccentrically rotates in the order of left (first position 73a), down (second position 73b), right (third position 73c), and up (fourth position 73 d). The right first massage member 73 of the first group of first massage members 73 eccentrically rotates in the order of right (first position 73a), down (second position 73b), left (third position 73c), and up (fourth position 73 d).

That is, the first group first massage members 73 eccentrically rotate line-symmetrically about the first center line L1. This can suppress the load caused by the friction between the first group of first massage members 73 and the scalp.

The second group of first massage members 73 is disposed with the first center line L1 in between. In the second group of first massage members 73, the rotation directions Y3, Y4 of the two first massage members 73 are opposite to each other. Specifically, in fig. 12, the left first massage member 73 of the second group of first massage members 73 eccentrically rotates in the order of right (first position 73a), up (second position 73b), left (third position 73c), and down (fourth position 73 d). The right first massage member 73 of the second group of first massage members 73 eccentrically rotates in the order of left (first position 73a), up (second position 73b), right (third position 73c), and down (fourth position 73 d).

That is, the second group first massage members 73 eccentrically rotate line-symmetrically about the first center line L1. This can suppress the load caused by the friction between the second group first massage members 73 and the scalp.

The pair of first massage members 73 disposed at the first portion 401 of the head 40 are disposed with the second center line L2 therebetween. The rotation directions Y1 and Y3 of the pair of first massage members 73 of the first portion 401 are the same.

Specifically, in fig. 12, the upper first massage member 73 of the pair of first massage members 73 of the first portion 401 eccentrically rotates in the order of left (first position 73a), down (second position 73b), right (third position 73c), and up (fourth position 73 d). The lower first massage member 73 of the pair of first massage members 73 of the first portion 401 eccentrically rotates in the order of right (first position 73a), up (second position 73b), left (third position 73c), and down (fourth position 73 d).

That is, the pair of first massage members 73 of the first portion 401 eccentrically rotate in the same direction with a phase difference of 180 degrees. Thereby, the pair of first massage members 73 approach or separate from each other to perform an operation of pinching the scalp. The phase difference is not limited to 180 degrees.

The pair of first massage members 73 disposed at the third portion 403 of the head 40 are disposed with the second center line L2 therebetween. The rotation directions Y2 and Y4 of the pair of first massage members 73 of the third portion 403 are the same.

Specifically, in fig. 12, the upper first massage member 73 of the pair of first massage members 73 of the third portion 403 eccentrically rotates in the order of right (first position 73a), down (second position 73b), left (third position 73c), and up (fourth position 73 d). The lower first massage member 73 of the pair of first massage members 73 of the third portion 403 eccentrically rotates in the order of left (first position 73a), up (second position 73b), right (third position 73c), and down (fourth position 73 d).

That is, the pair of first massage members 73 of the third portion 403 eccentrically rotate in the same direction with a phase difference of 180 degrees. Thereby, the pair of first massage members 73 approach or separate from each other to perform an operation of pinching the scalp. The phase difference is not limited to 180 degrees.

The two second massage members 83 are respectively disposed between two first massage members 73 arranged along the longitudinal direction of the head 40 among the four first massage members 73. The two second massage members 83 are disposed with the second center line L2 therebetween. The rotation directions Y5, Y6 of the two second massage members 83 are the same.

Specifically, in fig. 12, the upper second massage member 83 of the two second massage members 83 eccentrically rotates in the order of lower (first position 73a), right (second position 73b), upper (third position 73c), and left (fourth position 73 d). The lower one of the two second massage members 83 eccentrically rotates in the order of up (first position 83a), left (second position 83b), down (third position 83c), and right (fourth position 83 d).

That is, the two second massage members 83 are eccentrically rotated in the same direction with a phase difference of 180 degrees. Thereby, the two second massage members 83 approach or separate from each other to perform an action of pinching the scalp. The phase difference is not limited to 180 degrees.

As shown in fig. 12, the four first massage members 73 have the same size of the first rotation range R1. The two second massage members 83 have the same size of the second rotation range R2. The first rotation range R1 is larger than the second rotation range R2. That is, the first massage members 73 located outside the second massage members 83 are eccentrically rotated to a larger extent than the second massage members 83. This enables stimulation of the scalp by the massage protrusions 732 to be applied over a wide range.

The first rotation range R1 is a trajectory that the outer edge of the first massage member 73 describes when the first massage member 73 eccentrically rotates about the rotation center C1. The second rotation range R2 is a trajectory that the outer edge of the second massage member 83 describes when the second massage member 83 eccentrically rotates about the rotation center C2. The element determining the first rotation range R1 and the element determining the second rotation range R2 are set so as to satisfy the relationship that the diameter of the first rotation range R1 is larger than the diameter of the second rotation range R2.

The elements that determine the first rotation range R1 include the size and shape of the first massage member 73, the distance between the shaft body 725 and the output shaft 71, and the like when viewed in the axial direction of the output shaft 71. The elements that determine the second rotation range R2 include the size and shape of the second massage member 83, the distance between the shaft body 92 and the output shaft 81, and the like when viewed in the axial direction of the output shaft 81.

[ Effect and the like ]

As described above, the scalp care apparatus 10 of the present embodiment includes the main body 30 for housing the drive source 32 and the head 40 assembled to the main body 30. The head 40 includes at least four output shafts (output shafts 71, 81), at least four massage members (first massage member 73, second massage member 83), and an access portion 90.

At least four output shafts (output shafts 71, 81) are driven by the drive source 32. At least four massage members (a first massage member 73 and a second massage member 83) are provided corresponding to respective ones of the at least four output shafts (output shafts 71, 81), and are driven in a direction orthogonal to the respective ones of the plurality of output shafts (output shafts 71, 81). The access portion 90 is used to allow at least one of the at least four massage members (the second massage member 83) to protrude from the head portion 40 or enter the head portion 40. The entry and exit portion 90 has a biasing member 93, and the biasing member 93 biases the entry and exit massage member in a direction in which the entry and exit massage member protrudes.

In the present embodiment, the second massage member 83 is in the most protruding state from the head 40 when no load is applied. When the second massage member 83 abuts against the scalp, the second massage member 83 overcomes the urging force of the urging member 93 and enters the head 40. The urging force of the urging member 93 always acts on the second massage member 83. Therefore, when the scalp care apparatus 10 moves on the scalp or the second massage member 83 eccentrically rotates, the second massage member 83 moves in and out following the shape of the scalp. This improves the close contact of the second massage members 83 with the scalp during massage, thereby improving the scalp care effect.

The head 40 has a base 82 for transmitting power from an output shaft 81 to and from the massage member. An access portion 90 is provided between the access massage member and the base 82.

With this embodiment, the second massaging elements 83 can be made to protrude from the head 40 or enter the head 40 with a simple structure. The cover portion 48 having the second massaging elements 83 can be easily replaced due to the simple structure.

The inlet/outlet portion 90 includes a support portion 91 and a shaft body 92. The support portion 91 is attached to the base 82 and supports the massage tool so that the massage tool can be moved in and out. The shaft 92 is attached to the base 82 and guides the massage tool to move in and out while passing through the support 91.

In the present embodiment, the movement of the second massage member 83 in and out can be stabilized by the shaft body 92. Since the shaft body 92 is inserted through the support portion 91, the shaft body 92 and the support portion 91 can be overlapped in the thickness direction (axial direction of the shaft body 92). This enables the inlet/outlet portion 90 to be thin.

The in-and-out massage member has a hole portion 835 into which the tip end portion of the shaft body 92 is inserted. In the present embodiment, the distal end portion of the shaft body 92 is slidable in the hole portion 835 in the forward and backward direction. This allows the shaft body 92 to guide the second massage member 83 to move in and out with a simple configuration. The shaft body 92 and the second massage member 83 can be overlapped in the thickness direction (axial direction of the shaft body 92), and the access portion 90 and the second massage member 83 can be made thin.

The scalp care apparatus 10 further includes a claw member 823 which is provided between the support portion 91 and the base 82, holds the support portion 91 to the base 82 so as to be rotatable with respect to the base 82, and restricts movement of the support portion 91 in the forward and backward direction by the claw member 823. A gap S2 is provided between the claw member 823 and the support portion 91.

In the present embodiment, friction is not easily generated between the claw member 823 and the base portion 822 due to the gap S2, and therefore the support portion 91 can be smoothly rotated with respect to the base portion 822. The claw member 823 is a member having a relatively simple structure such as a wire spring. Therefore, the claw member 823 can hold the support portion 91 on the base 82 so as to be rotatable with respect to the base 82 with a simple configuration, and can restrict movement of the support portion 91 in the advancing and retreating direction. As a result, the scalp care apparatus 10 can be downsized.

At least one of the base 82 and the claw member 823 is made of metal. With this embodiment, the strength can be improved as compared with the case of resin. Thus, at least one of the base 82 and the claw member 823 can be made smaller than in the case of resin. As a result, the scalp care apparatus 10 can be downsized.

When the head 40 is viewed from above, the plurality of massage members (first massage members 73) other than the in-and-out massage members among the at least four massage members are arranged in a polygonal shape. The in-and-out massage members are disposed between the other plurality of massage members at the head 40.

In the present embodiment, the second massage member 83 moves in and out of the head 40 in accordance with the shape of the scalp. Thereby, the second massage member 83 and the first massage member 73 can be brought into close contact with the scalp. As a result, the scalp care effect can be improved.

[ supplement ]

The present disclosure is not limited to the above embodiments.

In the above embodiment, the scalp care apparatus 10 has the four first massaging members 73 and the two second massaging members 83. However, the number of the first massage members 73 may be three or more. In other words, the plurality of first massage members 73 may be arranged in a polygonal shape when the head 40 is viewed in plan. The polygon formed by the plurality of first massage members 73 may be a triangle, or a polygon having a pentagon or more.

If the second massage members 83 are disposed between the plurality of first massage members 73, the number of the second massage members 83 may be at least one. That is, the total number of the massage members (the first massage members 73 and the second massage members 83) may be at least four.

The number of the output shafts 71, 81 and the bases 72, 82 may correspond to the number of the first massage members 73 and the second massage members 83. That is, the number of output shafts 71, 81 may be at least four, and the number of bases 72, 82 may be at least four.

In the present embodiment, the plurality of first massage members 73 are arranged in a rectangular shape, and the shape of the head 40 in plan view is substantially rectangular. That is, the polygon formed by the plurality of first massage members 73 corresponds to the shape of the head 40 in a plan view. However, the polygon formed by the plurality of first massage members 73 may be different from the shape of the head 40 in a plan view. For example, when the plurality of first massage members 73 form a square, the shape of the head 40 in plan view may be a polygon other than a square, or may be a circle.

Claims

1. A scalp care device, wherein,

the scalp care device includes:

a main body for housing a drive source; and

a head portion assembled to the body,

the head has:

at least four output shafts driven by the drive source;

at least four massage members provided corresponding to the respective output shafts of the at least four output shafts, the massage members being driven in a direction orthogonal to the respective output shafts of the four output shafts; and

an access portion for accessing or extending at least one of the at least four massage members from or into the head,

the in-out portion has a force applying member that applies a force to the in-out massage member in a direction in which the in-out massage member protrudes.

2. The scalp care device of claim 1, wherein,

the head has a base for transmitting power from the output shaft to the in-out massage member,

the inlet and outlet part is arranged between the inlet and outlet massage piece and the base.

3. The scalp care device of claim 2, wherein,

the entry and exit portion includes:

a support portion that is attached to the base and supports the in-out massage member so that the in-out massage member can be moved in and out; and

and a shaft body mounted on the base and guiding the massage member to move in and out while penetrating the support portion.

4. The scalp care device of claim 3, wherein,

the in-out massage member has a hole into which a distal end portion of the shaft body is inserted.

5. The scalp care device of claim 3, wherein,

the scalp care apparatus further includes a claw member that is provided between the support portion and the base, holds the support portion to the base so as to be rotatable with respect to the base, and restricts movement of the support portion in an advancing/retreating direction,

a gap is provided between the claw member and the support portion.

6. The scalp care device of claim 5, wherein,

at least one of the base and the claw member is made of metal.

7. The scalp care device of claim 1, wherein,

in a case where the head is viewed in plan, a plurality of massage members other than the in-out massage member among the at least four massage members are arranged in a polygonal shape, and the in-out massage member is arranged between the plurality of other massage members at the head.