CN110584968B

CN110584968B - Scalp care device

Info

Publication number: CN110584968B
Application number: CN201910313979.0A
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: 2023-04-25
Anticipated expiration: 2039-04-18
Also published as: JP2019213708A; CN110584968A; JP6982833B2

Abstract

The invention provides a scalp care device. Comprises a main body for accommodating a driving source and a head assembled on the main body. The head part is provided with more than four output shafts, more than four massage parts and more than four bases. Four or more output shafts are driven by a drive source. The four or more massage members are provided in correspondence with the four or more output shafts, respectively, and the massage members are driven in directions orthogonal to the respective output shafts of the four or more output shafts. The four or more bases transmit power from the four or more output shafts to the respective ones of the four or more massage members, so that the four or more massage members eccentrically rotate with respect to the respective ones of the four or more output shafts. The four or more massage elements include a plurality of first massage elements arranged in a polygonal shape when the head is viewed from above, and one or more second massage elements arranged between the plurality of first massage elements. The first rotation range of the eccentric rotation of the first massage part is larger than the second rotation range of the eccentric rotation of the second massage part.

Description

Scalp care device

Technical Field

The present disclosure relates to a scalp care device for performing maintenance of the scalp by applying stimulation to the scalp using massage protrusions.

Background

Conventionally, there is known a scalp care device for applying a stimulus to the scalp by operating a massaging member that contacts the scalp of a human body (for example, refer to japanese patent No. 6158719).

Disclosure of Invention

Recently, a scalp care device has been proposed which improves the effects of scalp care such as a washing effect and a massaging effect. The present disclosure is directed to a scalp care device capable of improving the effect of scalp care.

The scalp care device according to one aspect of the present disclosure includes a main body for housing a driving source and a head assembled to the main body. The head has at least four output shafts, at least four massage members, and at least four bases.

At least four output shafts are driven by the drive source. The at least four massage members are provided in correspondence with the respective output shafts of the at least four output shafts, and the at least four massage members are driven in a direction orthogonal to the respective output shafts of the at least four output shafts. The at least four bases transmit power from the at least four output shafts to respective ones of the at least four massage members to eccentrically rotate the at least four massage members with respect to the respective ones of the at least four output shafts.

The at least four massage members include a plurality of first massage members arranged in a polygonal shape in a plan view of the head, and at least one second massage member arranged between the plurality of first massage members. The first range of rotation of the plurality of first massage members is greater than the second range of rotation of the at least one second massage member.

By adopting the scalp care device disclosed by the invention, the scalp care effect can be improved.

Drawings

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

Fig. 2 is a plan view of the scalp care device according to the embodiment.

Fig. 3 is a cross-sectional view of the scalp care device of the embodiment.

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

Fig. 5 is a cross-sectional view showing a schematic structure of the first massaging portion.

Fig. 6 is a cross-sectional view showing a schematic structure of the first massaging portion.

Fig. 7 is a cross-sectional view showing a schematic structure of the second massaging portion.

Fig. 8 is a cross-sectional view showing a schematic structure of the second massaging portion.

Fig. 9 is a cross-sectional view showing a state in which the second massage section shown in fig. 8 is pressed down to the lowest position.

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

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

Fig. 12 is a schematic view showing the rotation ranges and rotation directions of the first and second massaging members.

Detailed Description

The scalp care device according to embodiment 1 of the present disclosure includes a main body for housing a drive source and a head assembled to the main body. The head has at least four output shafts, at least four massage members, and at least four bases.

In the scalp care device according to claim 2 of the present disclosure, in addition to claim 1, the plurality of first massaging elements includes a pair of first massaging elements arranged across a center line in a longitudinal direction of the head. The pair of first massaging members perform eccentric rotation with respect to the center line symmetry.

In the scalp care device according to claim 3 of the present disclosure, in addition to claim 1, the plurality of first massaging elements includes a pair of first massaging elements arranged across a center line in the width direction of the head. The pair of first massaging members eccentrically rotate in the same direction with a predetermined phase difference.

With respect to the scalp care device according to the 4 th aspect of the present disclosure, in addition to the 1 st aspect, the at least one second massaging member includes a pair of second massaging members arranged across a center line in the width direction of the head. The pair of second massaging members eccentrically rotate in the same direction with a predetermined phase difference.

Hereinafter, a scalp care device 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 device 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 partial cross-sectional perspective 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 device 10 includes a main body 30 and a head 40 assembled to the main body 30. The body 30 comprises 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 holds the other end of the housing 31. The other end portion of the housing 31 has a convex curved shape that is smooth overall so as to be easy for the user to hold. The housing 31 is provided with a power button (not shown) for turning on or off the power.

The drive source 32 is a motor for rotating the plurality of

output shafts

71 and 81 provided in 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 described 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 for controlling the whole scalp care device 10.

The plurality of circuit components includes a switching element. 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 thereby operates or stops the drive source 32.

The head 40 includes a plurality of massaging members (first massaging member 73, second massaging 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 rounded shapes in plan view.

The head 40 includes a cover 48 and six massage portions 60. The cover 48 forms the outer surface of the head 40. The cover 48 is detachably attached to the main body 30. A part of the cover 48 constitutes a part of the massage elements (the first massage element 73 and the second massage element 83) included in each of the six massage elements 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 portion 70 is disposed near the corner of the head 40. The second massaging portion 80 is disposed between the two first massaging portions 70 arranged along the long side of the head 40. That is, the six massage sections 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.

The portions of the head 40 corresponding to the first, second, and third rows are hereinafter 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 so that the surfaces of the first portion 401, the second portion 402, and the third portion 403 are concave as a whole. Specifically, the angle formed by 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 concave portions 61 (see fig. 2) are provided in the first portion 401 and the third portion 403 in a circular shape in plan view. The four first concave portions 61 receive the four first massage portions 70, respectively. The cover 48 constitutes an inner peripheral surface and a bottom of the first recess 61.

Two circular second concave portions 62 (see fig. 2) are provided in the second portion 402 in a plan view. The two second concave portions 62 receive the two second massaging portions 80, respectively. The cover 48 constitutes an inner peripheral surface and a bottom of the second recess 62.

Next, the first massaging portion 70 will be described. Fig. 5 and 6 are cross-sectional views showing the schematic structure of the first massaging portion 70. Fig. 6 is a cross-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 rotation shaft that can be driven to rotate 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 rotation shaft for rotating the base 72.

The base 72 is a link member that transmits power from the output shaft 71 to the first massaging element 73 to eccentrically rotate the first massaging element 73. In the present embodiment, the base 72 is formed of metal, but may be formed of resin. The base 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 columnar shape. A groove 724 is provided on the outer peripheral surface of the base portion 722 in the circumferential direction, and the groove 724 accommodates a wire spring 723 made of metal. The filament spring 723 may be made of resin.

Shaft 725 protrudes from the upper surface of base portion 722. When the shaft 725 and the filament spring 723 are engaged with the first massage element 73, the first massage element 73 is mounted on the base portion 722. When the first massaging member 73 is pulled from the shaft 725 against the biasing force of the filament spring 723, the first massaging member 73 can be detached from the base portion 722. That is, the first massage device 73 is detachably attached to the base portion 722.

The shaft 725 penetrates through the center of the bottom of the first massaging element 73, and may be said to be the axial center of the first massaging element 73. The shaft body 725 is disposed at a position different from the output shaft 71 when viewed in the axial direction. Shaft 725 and output shaft 71 are disposed parallel to each other. Therefore, when the base 72 rotates due to the rotation of the output shaft 71, the first massaging 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 731 and a plurality of massage protrusions 732. The plurality of massage protrusions 732 are part of the cover 48, and are formed of a flexible material such as silicone rubber. The base 731 is formed of a resin having a higher rigidity than the massage protrusions 732. The base 731 and the plurality of massage protrusions 732 (i.e., the cover 48) are integrally formed by two-color molding.

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

The filament spring 723 is disposed in a space formed by the groove 724 of the base portion 722 and the groove 735 of the base portion 731. The filament spring 723 restricts the 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 both in the circumferential direction.

That is, the base 731 is rotatable with respect to the base portion 722 at the time of assembly. In order not to restrict the rotation to a desired extent or more, a gap S1 is provided between the filament spring 723 and the groove 735 of the base 731. Since friction is less likely to occur between the filament spring 723 and the base 731 due to the gap S1, the base 731 can be smoothly rotated relative to the base 722.

The plurality of massage protrusions 732 are provided to cover the plurality of protrusions of the base 731, respectively. The distal end portions of the massage projections 732 are portions that come 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 massaging material 73 is eccentrically rotated in a state where the first massaging material 73 is brought into contact with the scalp, the scalp can be stimulated without damaging the scalp by the elastic deformation of the massaging projections 732.

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

As shown in fig. 3, the pair of first massage parts 70 disposed at the first portion 401 are arranged 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 massaging portion 80 will be described. Fig. 7 and 8 are cross-sectional views showing the schematic structure of the second massaging portion 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 massaging portion 80 includes an output shaft 81, a base 82, a second massaging element 83, and an in-out portion 90.

The output shaft 81 is a rotation shaft that can be driven to rotate 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 rotation 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 massaging element 83 via the inlet/outlet portion 90, and eccentrically rotates the second massaging element 83. In the present embodiment, the base 82 is made of metal, but may be made of resin. The base 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. The base portion 822 is a portion to which the access portion 90 is attached, and is formed in a substantially columnar shape. A groove 824 is provided on the outer peripheral surface of the base 822 in the circumferential direction, and the groove 824 accommodates a metal claw member 823 such as a wire spring. The claw member 823 may be made of resin.

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

Hereinafter, the base 831 and the massage protrusions 832 are described. The base 831 is a substantially cylindrical member. A plurality of protrusions 833, which are axes of the plurality of massage protrusions 832, are provided on the top surface of the base 831. A recess 834 for the entrance and exit of the entrance and exit portion 90 is provided on the bottom surface of the base 831. A hole 835 is formed in the top surface of the recess 834. The tip end portion of the shaft 92 provided in the inlet/outlet portion 90 is inserted into the hole 835. The hole portion 835 extends in the moving direction of the in-out portion 90.

The hole 835 and the shaft 92 are provided inside the protrusion 833 disposed at the center of the second massaging element 83. Therefore, the shaft 92 can also be said to be the axial center of the second massaging element 83. The hole 835 and the shaft 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 parallel to each other. Therefore, when the base 82 rotates due to the rotation of the output shaft 81, the second massaging member 83 eccentrically rotates with respect to the output shaft 81. Thereby, the second massaging 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 opening 836 opening in an in-out direction (hereinafter referred to as an in-out direction) of the in-out portion 90. A plurality of guide openings 836 are provided along the circumference of the recess 834. Both ends of the guide port 836 in the in-out direction are closed. The guide port 836 is a portion for guiding the support portion 91 provided in the access portion 90 in the access direction.

The plurality of massage protrusions 832 are provided to cover the plurality of protrusions 833 of the base 831, respectively. The distal end portions of the massage protrusions 832 are portions that come 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 massaging element 83 is eccentrically rotated in a state where the second massaging element 83 is brought into contact with the scalp, the scalp can be stimulated without damaging the scalp by the elastic deformation of the massaging protrusions 832.

Around the plurality of massage protrusions 832, a follow-up deformation portion 50 as a part of the cover portion 48 is provided. 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 protruding 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 massaging element 83 is driven in parallel with the driving plane H2 to eccentrically rotate, the follow-up deforming portion 50 elastically deforms and follows the movement of the second massaging element 83. That is, the following deformation portion 50 allows the eccentric rotation of the second massaging element 83.

The follow-up deforming portion 50 is also configured to be elastically deformable with respect to a direction (in-out direction) orthogonal to the driving plane H2. The second massaging element 83 protrudes from the head 40 or into the head 40, as will be described later. The follow-up deforming portion 50 elastically deforms following the movement of the second massaging element 83. That is, the following deformation portion 50 allows the second massaging element 83 to move in and out.

The inlet/outlet portion 90 is provided between the second massaging element 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 one example of an in-out massaging element that can extend from the head 40 or into the head 40. Specifically, the inlet/outlet portion 90 includes a support portion 91, a shaft 92, and a biasing member 93.

The support portion 91 supports the second massaging element 83 so that the second massaging element 83 can move in and out with the axial direction of the shaft 92 as the moving-in and moving-out direction. The support portion 91 is formed in a substantially cylindrical shape. A bottom plate 901 is provided at a middle position of the supporting portion 91. A through hole 913 is formed in a central portion of the bottom plate 901. The first hole portion 911 and the second hole portion 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 91 closer to the base 822. The base portion 822 of the base 82 is inserted into the first hole portion 911. A groove 914 is provided in the inner circumferential surface of the first hole 911 in the circumferential direction. The claw member 823 engages with the groove 914.

The pawl 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 supporting portion 91. The claw member 823 restricts the assembly of the base portion 822 and the supporting portion 91. Specifically, the claw member 823 restricts relative movement in the in-out direction of the base portion 822 and the supporting portion 91, but does not restrict relative rotation in the circumferential direction of both.

That is, the support portion 91 is rotatable with respect to the base portion 822 during assembly. In order not to restrict the rotation more than necessary, a gap S2 is provided between the pawl member 823 and the groove portion 824 of the base portion 822. Since friction is less likely to occur between the pawl 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 support portion 91 is pulled from the shaft 92 against the urging force of the claw member 823, the second massaging element 83 can be detached from the base portion 822. That is, the second massaging element 83, the supporting portion 91, and the like are detachably attached to the base portion 822.

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

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

A plurality of locking projections 915 are provided on the outer peripheral surface of the end of the support portion 91 on the side of the second massaging element 83. The plurality of engaging projections 915 are arranged at positions corresponding to the plurality of guide openings 836 of the second massaging member 83. The locking protrusion 915 is guided in the in-out direction by the guide port 836 in a state of being disposed in the guide port 836. The locking protrusion 915 slides on the inner peripheral surface of the guide port 836 and is guided.

When the second massaging element 83 is not in contact with the scalp (when no load is applied), the engaging protrusion 915 engages the second massaging element 83 in the guide opening 836. Therefore, the locking protrusion 915 serves to prevent the second massaging element 83 from being separated from the supporting portion 91 by the urging force of the urging member 93.

Fig. 9 is a cross-sectional view showing a state in which the second massaging portion 80 shown in fig. 8 is pressed down to the lowest position.

As shown in fig. 7 and 8, the second massage members 83 of the second massage section 80 are in the most protruding state when no load is applied. As shown in fig. 9, when the second massaging element 83 abuts against the scalp, the second massaging element 83 presses the urging member 93 so as to approach the supporting portion 91. At this time, the engaging protrusion 915 of the supporting portion 91 is guided by the guide opening 836 of the second massaging member 83, and the second massaging member 83 smoothly operates. As a result, the second massaging element 83 enters the head 40.

The urging force of the urging member 93 always acts on the second massaging element 83. Therefore, when the scalp care device 10 moves on the scalp or the second massaging member 83 eccentrically rotates, the second massaging member 83 moves in and out following the shape of the scalp. This can improve the close contact between the second massaging element 83 and the scalp during massaging.

When the scalp care device 10 is separated from the scalp, the second massaging piece 83 protrudes from the head 40 by the urging force of the urging member 93. At this time, the engaging protrusion 915 of the supporting portion 91 is guided by the guide opening 836 of the second massaging member 83, and the second massaging member 83 smoothly operates.

As shown in fig. 3, the second massaging portion 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 portion 401 and the third portion 403 are inclined with respect to the surface of the second portion 402. Accordingly, the driving plane H1 of the first massaging portion 70 is inclined with respect to the driving plane H2 of the second massaging portion 80.

With this shape, the first massage member 73 and the second massage member 83 are easily oriented toward the scalp. Thereby, the close contact property of the first massage members 73 and the second massage members 83 to the scalp can be improved. As a result, the effects of scalp care such as the cleaning effect and the massaging effect can be improved.

As described above, the shaft body 725 of the first massaging element 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, the first massage members 73 and the second massage members 83 are easily directed toward the scalp. As a result, the close contact between the first massage member 73 and the second massage member 83 with the scalp can be improved, and the scalp care effect can be improved.

As shown in fig. 2, the first massage part 70 and the second massage part 80 are arranged to be line-symmetrical 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 parts 70, two first massage parts 70 disposed at the first portion 401 and two first massage parts 70 disposed at the third portion 403 form two pairs of first massage parts 70 disposed across the first center line L1.

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

The load applied to each of the first massage devices 73 provided in the pair of first massage portions 70 is equalized by this shape. Thereby, the scalp care device 10 is stabilized with respect to the scalp. As a result, the scalp care effect can be further improved.

Next, the gear unit 35 is 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 rear surface side of the gear unit 35. Fig. 11 is a plan view showing the front side of the gear unit 35. The "front" refers to the side of the housing 31 where one end of the head 40 is assembled, and the "back" refers to the side of the other end of the housing 31 where the user holds. 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 power paths for transmitting the power of the drive source 32 to the

output shafts

71 and 81.

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

The gear 701 meshes with the 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 rotation of the gear 703 protrudes toward the front side of the motor base 351.

13 gears (gears 704 to 716) are rotatably supported on the front surface of the motor base 351. The gear 704 is attached to a rotation shaft of the gear 703 protruding toward the front side. Gear 705 meshes with gear 704. Gear 706 is meshed with gear 705. Gear 707 meshes with gear 706. Gear 708 meshes with gear 706.

Gear 709 is meshed with gear 705. Gear 710 meshes with gear 709. Gear 711 is meshed with gear 710. Gear 712 meshes with gear 710. Gear 713 is meshed with gear 710. Gear 714 meshes with gear 713. Gear 715 is meshed with gear 714. Gear 716 is in mesh with gear 714.

The axes of rotation of

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 massaging portion 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 massaging portion 70 disposed in the third portion 403.

The rotation axes of the

gears

715, 716 are the output shafts 71 of the pair of first massage portions 70 disposed at the first portion 401. The

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 massaging portion 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 section 70 disposed at the first portion 401.

As described above, the

gears

707, 708, 715, 716 are helical gears for transmitting power to the output shaft 71 inclined in correspondence with the driving plane H1. This allows 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 device 10.

The rotation axes of the

gears

711 and 712 are the output shafts 81 of the pair of second massaging portions 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 orthogonal to the driving plane H2 of the second massaging portion 80 disposed at the second portion 402.

The number, size, rotational direction, engagement combinations, and the like of gears of the gear unit 35 are determined so that the rotations of the

output shafts

71, 81 satisfy the conditions shown below.

Fig. 12 is a schematic view of the head 40 in a plan view, showing the rotation ranges and rotation directions of the first massage members 73 and the second massage members 83. In fig. 12, the inclination of the first massage member 73 is omitted for convenience of explanation. That is, in fig. 12, the axes of the first massage members 73 and the second massage members 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, a first rotation range R1 and a second rotation range R2 are indicated by thick lines. The first rotation range R1 is a range in which the first massaging member 73 eccentrically rotates, and the second rotation range R2 is a range in which the second massaging member 83 eccentrically rotates.

In fig. 12, arrows (Y1 to Y6) indicate the rotation directions of the first massage member 73 and the second massage member 83. The rotation center C1 of the first rotation range R1 corresponds to the output shaft 71 of the first massaging portion 70. The rotation center C2 of the second rotation range R2 corresponds to the output shaft 81 of the second massaging portion 80.

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

Specifically, first, the first massage members 73 and the second massage members 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 massage member 73 and the second massage member 83 are located at the

second positions

73b, 83b indicated by broken lines. After rotating 90 degrees from the

second positions

73b, 83b, the first massage member 73 and the second massage member 83 are located at

third positions

73c, 83c indicated by single-dot chain lines. After rotating 90 degrees from the

third positions

73c, 83c, the first massage member 73 and the second massage member 83 are located at

fourth positions

73d, 83d indicated by two-dot chain lines. The first massage member 73 and the second massage member 83 pass through the first position, the second position, the third position, and the fourth position in this order and repeatedly perform eccentric rotation.

The first massage member 73 and the second massage member 83 eccentrically rotate at the same rotational speed. Therefore, the timings of passing through the first position 73a, the second position 73b, the third position 73c, and the fourth position 73d are the same for all the first massage members 73. The time of passing through 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.

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 elements 73, and the pair of first massage elements 73 disposed on the lower side is referred to as a second group of first massage elements 73.

The first group of first massage elements 73 is disposed across the first center line L1. 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 73 a), lower (second position 73 b), right (third position 73 c), and upper (fourth position 73 d). The right-side first massage members 73 of the first group of first massage members 73 eccentrically rotate in the order of right (first position 73 a), lower (second position 73 b), left (third position 73 c), upper (fourth position 73 d).

That is, the first group of first massaging elements 73 perform eccentric rotation with respect to the first center line L1 line symmetry. This can suppress the load caused by friction between the first massaging elements 73 and the scalp.

The second group of first massaging elements 73 is disposed across the first center line L1. 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 73 a), upper (second position 73 b), left (third position 73 c), and lower (fourth position 73 d). The right-side first massage members 73 of the second group of first massage members 73 eccentrically rotate in the order of left (first position 73 a), up (second position 73 b), right (third position 73 c), and down (fourth position 73 d).

That is, the second group of first massaging elements 73 perform eccentric rotation in line symmetry with respect to the first center line L1. This can suppress the load caused by friction between the second group of first massaging elements 73 and the scalp.

The pair of first massaging elements 73 disposed at the first portion 401 of the head 40 are disposed with the second center line L2 interposed therebetween. The rotation directions Y1 and Y3 of the pair of first massaging elements 73 in 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 73 a), lower (second position 73 b), right (third position 73 c), and upper (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 73 a), upper (second position 73 b), left (third position 73 c), and lower (fourth position 73 d).

That is, the pair of first massaging elements 73 of the first portion 401 eccentrically rotate in the same direction with a 180-degree phase difference. Thus, the pair of first massaging members 73 are moved closer to or farther from each other, thereby pinching the scalp. The phase difference is not limited to 180 degrees.

The pair of first massaging elements 73 disposed at the third portion 403 of the head 40 are disposed with the second center line L2 interposed therebetween. The rotation directions Y2 and Y4 of the pair of first massaging elements 73 at 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 in the third portion 403 eccentrically rotates in the order of right (first position 73 a), lower (second position 73 b), left (third position 73 c), and upper (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 73 a), up (second position 73 b), right (third position 73 c), and down (fourth position 73 d).

That is, the pair of first massaging members 73 of the third portion 403 eccentrically rotate in the same direction with a phase difference of 180 degrees. Thus, the pair of first massaging members 73 are moved closer to or farther from each other, thereby pinching the scalp. The phase difference is not limited to 180 degrees.

The two second massaging elements 83 are respectively disposed between two first massaging elements 73 of the four first massaging elements 73, which are arranged along the longitudinal direction of the head 40. The two second massaging elements 83 are disposed with the second center line L2 interposed therebetween. The rotation directions Y5, Y6 of the two second massaging elements 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 the lower (first position 73 a), the right (second position 73 b), the upper (third position 73 c), and the left (fourth position 73 d). The lower second massage member 83 of the two second massage members 83 eccentrically rotates in the order of upper (first position 83 a), left (second position 83 b), lower (third position 83 c), right (fourth position 83 d).

That is, the two second massaging elements 83 eccentrically rotate in the same direction with a phase difference of 180 degrees. Thereby, the two second massaging elements 83 come close to or separate from each other, and perform an action of pinching the scalp. The phase difference is not limited to 180 degrees.

As shown in fig. 12, the four first massaging elements 73 have the same size of the first rotation range R1. The two second massaging elements 83 have a second rotation range R2 of the same size. The first rotation range R1 is larger than the second rotation range R2. That is, the first massaging element 73 located outside the second massaging element 83 eccentrically rotates by a larger extent than the second massaging element 83. Thus, the scalp can be stimulated by the massage protrusions 732 over a wide range.

The first rotation range R1 is a locus traced by the outer edge of the first massage member 73 when the first massage member 73 eccentrically rotates about the rotation center C1. The second rotation range R2 is a locus traced by the outer edge of the second massaging member 83 when the second massaging member 83 eccentrically rotates around the rotation center C2. The element for determining the first rotation range R1 and the element for 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 massaging member 73, the interval 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 massaging element 83, the interval 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 etc. ]

As described above, the scalp care device 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 comprises at least four output shafts (output shafts 71, 81), at least four massaging members (first massaging member 73, second massaging member 83) and at least four seats (seats 72, 82).

At least four output shafts (output shafts 71, 81) are driven by the drive source 32. At least four massage elements (first massage element 73, second massage element 83) are provided corresponding to at least four output shafts (output shafts 71, 81), respectively, and are driven in directions orthogonal to the at least four output shafts (output shafts 71, 81), respectively.

The at least four bases (bases 72, 82) transmit power from the at least four output shafts (output shafts 71, 81) to the at least four massage members (first massage member 73, second massage member 83), respectively, so that the at least four massage members (first massage member 73, second massage member 83) eccentrically rotate with respect to the at least four output shafts (output shafts 71, 81), respectively.

The at least four massage members (first massage member 73, second massage member 83) include a plurality of first massage members (first massage member 73) arranged in a polygonal shape in a plan view of the head 40, and at least one second massage member (second massage member 83) arranged between the plurality of first massage members (first massage member 73). The first rotation range R1 in which the plurality of first massaging members (first massaging members 73) eccentrically rotate is larger than the second rotation range R2 in which the at least one second massaging member (second massaging member 83) eccentrically rotates.

In the present embodiment, the first massaging element 73 located outside the second massaging element 83 is eccentrically rotated by a larger extent than the second massaging element 83. Thus, the 1 st massaging member 73 can be applied to the scalp in a wide range. As a result, the scalp care device 10 having an improved scalp care effect can be provided.

It is also contemplated that the second rotation range R2 of the two second massaging elements 83 is the same as the first rotation range R1. However, in this case, the head 40 is enlarged, and the scalp care apparatus 10 is enlarged. The user holds the scalp care device 10 and operates it with one hand while washing hair. When the scalp care device 10 is used, water and shampoo may adhere to the scalp care device 10 to make the scalp care device 10 easily slip. Therefore, the scalp care device 10 is preferably as small as possible. With the present embodiment, the operability can be improved by suppressing the increase in size.

In the present embodiment, the first massaging element 73 eccentrically rotates to a larger extent than the second massaging element 83. This gives the impression that the entire head can be moved greatly. As a result, the user can actually feel a high scalp care effect.

The plurality of first massage members 73 includes a pair of first massage members 73 arranged across the first center line L1. The pair of first massaging members 73 eccentrically rotate with respect to the first center line L1.

With the present embodiment, the load caused by friction between the first massaging element 73 and the scalp can be suppressed. This can suppress the shaking of the scalp care apparatus 10 when in use. As a result, the operability of the scalp care device 10 can be improved.

The plurality of first massage members 73 includes a pair of first massage members 73 arranged across the second center line L2. The pair of first massaging members 73 eccentrically rotate in the same direction with a predetermined phase difference.

With the present embodiment, a pair of first massage members 73 are close to or apart from each other. This makes it possible to perform an operation such as pinching the scalp using the pair of first massaging elements 73. As a result, the scalp care effect can be further improved by applying the stimulation such as kneading the scalp.

The at least one second massage member 83 includes a pair of second massage members 83 arranged across the second center line L2. The pair of second massaging members 83 eccentrically rotate in the same direction with a predetermined phase difference.

With the present embodiment, a pair of second massaging elements 83 are close to or apart from each other. This makes it possible to perform an operation such as pinching the scalp using the pair of second massaging elements 83. As a result, the scalp care effect can be further improved by applying the stimulation such as kneading the scalp.

[ supplement ]

The present disclosure is not limited to the above embodiments.

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

If the second massaging members 83 are disposed between the plurality of first massaging members 73, the number of the second massaging members 83 may be at least one. That is, the total number of the massaging elements (the first massaging element 73 and the second massaging element 83) is 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 massaging elements 73 are arranged in a rectangular shape, and the head 40 is substantially rectangular in a plan view. That is, the polygon formed by the plurality of first massaging elements 73 corresponds to the shape of the head 40 in a plan view. However, the polygonal shape formed by the plurality of first massaging elements 73 may be different from the shape of the head 40 in a plan view. For example, when the plurality of first massaging elements 73 form a quadrangle, the shape of the head 40 in plan view may be a polygon other than the quadrangle, or may be a circle.

Claims

1. A scalp care device, wherein,

the scalp care device includes:

a main body for accommodating a driving source; and

a head part assembled to the main body,

the head has:

output shafts, which are at least four, driven by the drive source;

a massage member provided in correspondence with each of the at least four output shafts, the massage member being driven in a direction orthogonal to each of the at least four output shafts; and

a base for transmitting power from at least four of the output shafts to each of the at least four massage members to eccentrically rotate the at least four massage members with respect to each of the at least four output shafts,

the at least four massage members include a plurality of first massage members arranged in a polygonal shape in a plan view of the head and at least one second massage member arranged between the plurality of first massage members,

the first plurality of first massage members eccentrically rotate over a first range of rotation that is greater than the second plurality of second massage members eccentrically rotate.

2. The scalp care device according to claim 1 wherein,

the plurality of first massage members include a pair of first massage members disposed across a center line in a longitudinal direction of the head,

the pair of first massaging members perform eccentric rotation with respect to the centerline line symmetry.

3. The scalp care device according to claim 1 wherein,

the plurality of first massage members include a pair of first massage members disposed across a center line in a width direction of the head,

the pair of first massaging members eccentrically rotate in the same direction with a predetermined phase difference.

4. The scalp care device according to claim 1 wherein,

the at least one second massaging element includes a pair of second massaging elements arranged across a center line in a width direction of the head,

the pair of second massaging members eccentrically rotate in the same direction with a predetermined phase difference.