JP2010167047A - Electric brush device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To excellently wash or massage the scalp without damaging hair. <P>SOLUTION: In an electric brush device, a brush part 3 comprising a flexible substrate 4 and a plurality of projections 5-7 provided on the substrate 4 so as to cross the surface S of the substrate 4 is freely detachably held by the frame body of an electric brush device body being a driving part and is connected to a reciprocating drive means inside the electric brush device body, and the scalp S or the like is washed or massaged by repeatedly deflecting the substrate 4 in a direction crossing the surface 4S by the reciprocating drive means and repeatedly opening and closing the respective projections 5-7 with each other. Since fine projection parts 28 are projected in the height direction and provided on the distal end part 5A of the first projection 5 respectively, the fine projection parts 28 are brought into direct contact with the scalp S. Thus, the friction of the first projection 5 and the hair, that is the damage to the hair, is suppressed, and the scalp is excellently washed and massaged. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to an electric brush device, and more particularly to an electric brush device that can be used for scalp washing, massage, and the like.

  Conventionally, this type of electric brush device has a drive unit and a treatment unit (corresponding to the brush unit of the present invention) operated by this drive unit, and the drive unit has a peripheral edge of the substrate of the treatment unit. And a reciprocating driving means for bending the substrate in a direction intersecting the surface of the substrate by connecting to the center of the substrate. There is known a massage apparatus in which the treatment portion is composed of the substrate made of a flexible material and a plurality of protrusions provided to protrude from the substrate. And in this massage device, the user holds the drive unit, presses the tip of the projection against the scalp and holds it by hand, and flexes the substrate of the treatment unit by the reciprocating drive means, As the plurality of protrusions provided on the substrate are repeatedly tilted and raised, the scalp is squeezed, rubbed and struck by the mutual opening and closing protrusions. Can be massaged complexly. As shown in FIG. 9 and FIG. 10, the treatment unit 102 driven by the drive unit 101 is deformed between a curved convex state where the substrate 103 is bent downward and a curved concave state where the substrate 103 is bent upward. When repeating, a plurality of types of protrusions 104, 105, 106, 107 move with the bending of the substrate 103, so that the scalp S is pushed by the fingertips by the protrusions 104, 105, 106, 107 pressed against the scalp S. It can be massaged to perform (for example, Patent Documents 1 and 2).

JP 2007-229159 A JP 2008-206902 A

  In the prior art, the scalp S is massaged by the fingertips by the protrusions 104, 105, 106, 107 pressed against the scalp S, and the tips of the protrusions 104, 105, 106, 107 are tapered. If there is, the projections 104, 105, 106, and 107 can be directly pressed against the scalp S while avoiding unillustrated hair, but if the tips of the projections 104, 105, 106, and 107 become relatively thick, these projections 104, 105, 106, and 107 contact the hair and are not directly pressed against the scalp S, and the protrusions 104, 105, 106, and 107 pinch the hair with the scalp S. As a result, the protrusion 104 , 105, 106, 107 may slide on the hair and damage the hair, or may reduce the massage effect. Further, when scalp S is washed using such an apparatus, there is a possibility that only the hair is washed and the scalp is not sufficiently washed.

  The problem to be solved by the present invention is that in an electric brush device that presses a protrusion against the scalp to clean or massage the scalp, the protrusion is pressed against the scalp without pinching the hair so that the scalp can be cleaned or massaged. It is to be.

  The invention of claim 1 has a drive part and a brush part operated by the drive part, and the brush part is provided so as to protrude from the surface of the substrate and a substrate made of a flexible material. The driving unit is provided with a frame body that holds the periphery of the substrate, and a reciprocating drive unit that is connected to the substrate and bends the substrate in a direction intersecting the surface of the substrate. The electric brush device is characterized in that minute protrusions are provided in the height direction on the tip end side of each protrusion, respectively.

  According to the invention of claim 2, a plurality of the minute protrusions are provided at the tip portions of the respective protrusions, and the minute protrusions are provided through a gap between the tip side and the side. The electric brush device according to claim 1, wherein the electric brush device is provided.

  The invention according to claim 3 is the electric brush device according to claim 1 or 2, wherein the contact piece on which the minute protrusion is formed is configured to be detachable from the protrusion. .

  According to a fourth aspect of the present invention, there is provided the electric brush device according to the third aspect, wherein the contact piece and the protrusion are formed of different materials.

  According to the first aspect of the present invention, when the scalp is washed or massaged, the minute protrusions enter between the hairs on the scalp so that the minute protrusions directly contact the scalp. The scalp can be washed and massaged without pinching the hair between them. For this reason, the damage of hair can be suppressed and scalp washing and massage can be performed satisfactorily.

  In addition, when the protrusions are brought into contact with the scalp by providing a plurality of the minute protrusions at the distal end portions of the respective protrusions so that the gap between the distal end side and the side is opened between each other. In addition, since the hair can enter the gap, the scalp can be washed and massaged satisfactorily without causing any damage to the hair by making sure that the minute protrusions and the scalp are in contact.

  In addition, since the contact piece formed with the minute protrusion is configured to be detachable from the protrusion, the brush part can be used longer by replacing only the contact piece having a minute protrusion that is easily damaged. can do.

  Furthermore, by forming the contact piece material and the projection material differently, the microprojection portion has the optimum characteristics for scalp washing and massage without being affected by the projection material. be able to.

It is a perspective view of the electric brush apparatus which shows Example 1 of this invention. FIG. It is an enlarged perspective view of the principal part of a brush part. It is an expanded sectional view of the principal part of a brush part. It is an enlarged bottom view of the principal part of a brush part. It is a perspective view of the brush part of the electric brush apparatus which shows Example 2 of this invention. FIG. It is a perspective view of the brush part of the electric brush apparatus which shows Example 3 of this invention. It is sectional drawing around the board | substrate of the curve convex state which shows a prior art example. It is sectional drawing around the board | substrate of the curved concave state which shows a prior art example.

  Preferred embodiments of the present invention will be described with reference to the accompanying drawings. The embodiments described below do not limit the contents of the present invention described in the claims. In addition, all the configurations described below are not necessarily essential requirements of the present invention.

  1 to 5 show a first embodiment. In this example, the upper and lower sides are defined based on the posture shown in FIG. Reference numeral 1 denotes an electric brush device according to the present invention. The electric brush device 1 includes an electric brush device body 2 as a drive unit, and a brush portion 3 that is detachably held on the lower side of the electric brush device body 2. The brush portion 3 includes a substrate 4 and three types of protrusions 5, 6, and 7 that are integrally provided so as to protrude downward in a direction intersecting the surface 4 </ b> S of the substrate 4. The substrate 4 is elliptical in plan view and is formed of an elastomer having flexibility and elasticity. Moreover, the said board | substrate 4 is convex outside (namely, curved convex state) in a natural state. And the edge 4A of the said board | substrate 4 is being fixed to the frame 8 provided in the bottom face part 2B side of the said electrically driven brush apparatus main body 2. As shown in FIG. The term “fixed” as used herein includes a state in which connection is permitted with some movement, and in this embodiment, the edge 4A of the substrate 4 is attached to the frame of the electric brush device main body 2. The two are connected to each other so as to be detachable.

  The electric brush device main body 2 includes a case main body 2A having an opening on the bottom side and a size that can be grasped with one hand, and the bottom surface portion 2B that closes the open bottom side of the case main body 2A. Has been. The bottom surface portion 2 </ b> B has a bottom plate 9 and a cover body 11. The bottom plate 9 is formed in an elliptical shape in plan view, and its outer periphery is fixed to the bottom edge of the case main body 2A. A window hole 10 is formed, and the cover body 11 that covers the window hole 10 and can be expanded and contracted is provided. The cover 11 is provided so as to seal the window hole 10 in a watertight manner by a bellows-like film made of a flexible material such as rubber, synthetic rubber, or elastomer. A reciprocating drive means 12 for reciprocating the central portion of the substrate 4 in the vertical direction is provided inside the electric brush device body 2. The reciprocating drive means 12 includes a motor 13 as a drive source, a crank 15 connected to a motor shaft 13A of the motor 13 via a reduction gear mechanism 14, and a yoke 16 coupled to an eccentric shaft 15A of the crank 15. The rod 16A formed integrally with the yoke 16 is provided. Thus, in the present embodiment, a so-called Scotch-yoke mechanism is employed, but a crank mechanism may be employed. Note that a connection relay member 17 is integrally attached to substantially the center of the cover body 11. The connection relay member 17 sandwiches and fixes the cover 11 between the upper surface side thereof and the lower end of the rod 16A, and a hook 17A is provided on the lower surface side thereof. A hook receiving portion 4B provided on the central upper surface is detachably connected. Therefore, the connection relay member 17 is reciprocated in the vertical direction by converting the rotational motion of the motor 13 into reciprocal motion between the crank 15 and the yoke 16. Thereby, the position where the hook receiving portion 4B is provided becomes the maximum amplitude portion in the substrate 4, and the amplitude is twice the eccentric distance F from the central axis of the crank 15 to the eccentric shaft 15A (2F). It becomes. A virtual central axis X is defined in the vertical direction through the hook receiving portion 4B and the connection relay member 17. In addition, a battery 18 for supplying electric power to the motor 13 is provided inside the electric brush device main body 2, and the motor 13 is provided on the upper surface of the electric brush device main body 2. A switch 19 is provided for operating.

  The brush part 3 will be described in detail. The first to third protrusions 5, 6, and 7 each have a conical shape that is tapered and the tip is rounded into a substantially hemispherical shape. The protrusions 5, 6, and 7 are elliptical virtual outer sides defined along the edge 4A of the substrate 4 with the virtual center axis X passing through substantially the center of the substrate 4 up and down. A ring O, an elliptical virtual intermediate ring M defined inside thereof, and a circular virtual inner ring I defined inside thereof are provided. An annular wall 27 is provided on the virtual inner ring I so as to connect the third protrusions 7 to each other. Further, the substrate 4 is provided with a small through-hole-shaped first communicating portion 21 and a second communicating portion 22 that communicate with the inside and outside of the region surrounded by the electric brush device main body 2 and the brush portion 3. The first communication part 21 is provided outside the virtual inner ring I. On the other hand, the second communication part 22 is annularly arranged along a circular virtual center ring N centered on a central axis X provided inside the virtual inner ring I. That is, the second communication portion 22 is formed in an area surrounded by the third protrusion 7 and the annular wall 27. On the other hand, the first continuous portion 21 is formed in an area outside the third protrusion 7 and the annular wall 27. A height H4 from the proximal end to the distal end of the annular wall 27 is smaller than a height H3 from the proximal end to the distal end of the third protrusion 7 connected by the annular wall 27. Further, when the height from the proximal end to the distal end of the first and second protrusions 5 and 6 is H1 and H2, the respective values are H1> H2> H3> H4. Furthermore, when the widths (diameters) of the first and second protrusions 5 and 6 at the tip portions 5A and 6A are W1 and W2, the respective widths satisfy W1> W2. In the embodiment, the positions 5P and 6P for defining the widths W1 and W2 are boundaries between the conical surface and the hemispherical surface.

  A plurality (three in the embodiment) of minute protrusions 28 are provided at the tip 5A of the first protrusion 5 so as to protrude in the height direction. These minute protrusions 28 are tapered and are provided with a gap 29 therebetween. In the embodiment, these minute protrusions 28 are provided at substantially equal intervals. The width (diameter) W3 at the base end portion of these minute protrusions 28 is smaller than the width W1 (W1> W3), and the height H5 from the proximal end to the distal end of each of the minute protrusions 28 is the hair T The thickness D is 0.15 mm or more, preferably 1 mm or more (H5> 0.15 mm) so that it is higher than the diameter D (generally about 0.05 to 0.15 mm although there are individual differences). In addition to the height direction of each of the minute protrusions 28, the gap 29 is open to the front and rear sides of the minute protrusions 28 and to the left and right sides. Therefore, the front end side opening 29A and the side opening 29B are formed in the gap 29. The width 29 of the gap 29 is 0.15 mm or more, preferably 1 mm or more (W4> 0.15 mm) so as to be wider than the diameter D of the hair T.

  Further, a region surrounded by the electric brush device main body 2 and the brush portion 3, that is, between the bottom surface portion 2 </ b> B and the inner surface of the substrate 4, is communicated with the communication portions 21 and 22 and the substrate 4. A shampoo housing 26 is provided that responds to the deflection. The container 26 is adapted to repeatedly suck and discharge the shampoo from the communicating portions 21 and 22 by repeatedly compressing and restoring in response to the bending of the substrate 4. The container 26 is formed of a synthetic sponge or sponge (natural sponge) made of open-cell foamed polyurethane, foamed rubber, or the like, which is an elastic body in the embodiment, and as shown in FIG. When the substrate 4 is in a curved convex state bent downward, the container 26 is in an almost uncompressed state or slightly compressed state and is interposed between the bottom surface portion 2B and the upper surface of the substrate 4. That is, when the substrate 4 is in a curved convex state bent downward, the upper surface 26A of the container 26 is in contact with or close to the bottom surface portion 2B, and the lower surface 26B of the container 26 is the upper surface of the substrate 4. Further, the outer periphery 26C of the container 26 is in contact with or close to the frame body 8. On the other hand, a through hole 26 </ b> D is formed along the central portion of the container 26, that is, along the central axis X. The hook receiving portion 4B and the hook 17A can be connected through the through hole 26D.

  Next, the effect | action is demonstrated about the said structure. When cleaning or massaging the scalp S, the user first puts an appropriate amount of water in the container 26 in advance. In addition, water is absorbed by the container 26 through the communication portions 21 and 22 by immersing the electric brush device 1 in water. Then, an appropriate amount of shampoo is placed on the area surrounded by the third protrusion 7 and the annular wall 27 with the surface 4S of the substrate 4 facing upward. At this time, the shampoo placed on the area surrounded by the third protrusion 7 and the annular wall 27 does not flow out to the area outside the third protrusion 7 and the annular wall 7 unless it is placed excessively. A small amount of shampoo penetrates from the second communicating portion 22 into the container 26 side.

  Next, when the switch 19 is operated, electric power is supplied from the battery 18, whereby the motor 13 is operated and the motor shaft 13 </ b> A is rotated. Along with this rotation, the crank 15 connected to the motor shaft 13A via the reduction gear mechanism 14 rotates, and the motor shaft is coupled by the crank 15 and the yoke 16 coupled to the eccentric shaft 15A of the crank 15. The rotational movement of 13A is converted into a reciprocating movement, and the connection relay member 17 attached to the lower end of the rod 16A formed integrally with the yoke 16 reciprocates up and down. Then, the substrate 4 is the same as in the prior art so that the hook receiving portion 4B connected to the hook 17A provided on the connection relay member 17, that is, the center of the substrate 4 is the maximum amplitude portion. The deformation is repeated between a curved convex state bent downward and a curved concave state bent upward, and the amplitude at the maximum amplitude portion is an eccentric distance F from the central axis of the crank 15 to the eccentric shaft 15A. Double (2F).

  Thus, the space between the substrate 4 and the bottom surface portion 2B is compressed and restored by repeating the deformation between the curved convex state where the substrate 4 is bent downward and the curved concave state where the substrate 4 is bent upward. As a result, the container 26 repeats compression and restoration in response to the bending of the substrate 4. Then, when the container 26 is restored from the compressed state, the space between the substrate 4 and the bottom surface portion 2B is in a reduced pressure state so that it is placed on the inner area of the third protrusion 7 and the annular wall 27. The shampoo is sucked from the second communication portion 22 and flows into the space, and is stored in the container 26. Conversely, when the container 26 is compressed, the shampoo accommodated in the container 26 is ejected from the second communication portion 22. The shampoo is foamed by being mixed with air when pushed out through the second communication portion 22. Then, the deformation of the container 26 is repeated in this manner, so that the shampoo gradually spreads from the center of the container 26 to the outer peripheral side. The applied shampoo will be pushed out. In this way, the container 26 repeatedly compresses and restores in response to the deformation of the substrate 4 repeated between the curved convex state and the curved concave state, so that the inside of the third protrusion 7 and the annular wall 27 The shampoo placed on the area is bubbled and supplied to the outside from the entire brush unit 3. The shampoo is finely bubbled when passing through the communication parts 21 and 22. And the said shampoo will be bubbled finely, so that the diameter of the hole of the said communication parts 21 and 22 is small.

  Thus, in a state where the shampoo is foamed, the user holds the electric brush device main body 2 and presses the tip portions of the protrusions 5, 6 and 7 against the scalp S and holds them by hand. . As a result, the first protrusion 5 can be massaged so as to rub the scalp S by repeatedly inclining inwardly with respect to the central axis X or standing up thereafter. . The second protrusion 6 is shorter than the first protrusion 5, the base end is thicker than the base end of the first protrusion 5, and the tip end 6 </ b> A is longer than the tip end 5 </ b> A of the first protrusion 5. Therefore, it is possible to perform a massage such that the tip rubs against the scalp S by repeatedly inclining inwardly with respect to the central axis X or by standing up thereafter. Further, the third protrusion 7 can be massaged by tapping the scalp S by repeating contact and separation with the scalp S due to the bending of the substrate 4. In this way, the scalp S and the hair T are washed using the finely foamed shampoo at the same time as massage is performed using the protrusions 5, 6, and 7. At this time, since the hair can be washed and massaged using the shampoo finer than the case of foaming with the palm of the user, the hair T and scalp S can be washed effectively. In addition, the hair T can be reliably protected from friction with the brush portion 3 made of a material having a relatively large friction coefficient such as an elastomer.

  And when each protrusion 5-7 of the said brush part 3 is pressed on the said scalp S, the hair T will be pinched | interposed between the front-end | tip part 5A of the said 1st protrusion 5, and the scalp S, and the said front-end | tip part 5A will be hair. There is a possibility that the hair T may be damaged by rubbing with T, or the tip 5A may not be in direct contact with the scalp S, and the scalp S cannot be cleaned or massaged well. However, as described above, since the plurality of minute protrusions 28 are formed on the distal end portion 5A of the first protrusion 5 with the gap 29 therebetween, the distal end portion 5A of the first protrusion 5 is formed on the scalp S. When abutting, the plurality of minute protrusions 28 directly contact the scalp S, and the hair T enters the gap 29 between these minute protrusions 28. That is, the hair T enters the gap 29 from the distal end side opening 29A and passes from one side opening 29B to the other side opening 29B. As a result, since the minute projections 28 are in direct contact with the scalp S, the scalp S can be washed or massaged without damaging the hair T by these minute projections 28. In the present embodiment, the tip 6A of the second projection 6 is narrower than the tip 5A of the first projection 5, and the tip 6A can be in direct contact with the scalp S. Therefore, the tip 6A However, the minute protrusions may be formed on the tip 6A of the second protrusion 6 as well.

  As described above, in the above-described embodiment, the brush unit 3 including the flexible substrate 4 and the plurality of protrusions 5 to 7 provided on the substrate 4 so as to intersect the surface S of the substrate 4 is used as the driving unit. The electric brush device main body 2 is detachably held by the frame body 8 and connected to the reciprocating drive means 12 in the electric brush device main body 2. The reciprocating drive means 12 allows the substrate 4 to be attached to the surface 4S. The electric brush device 1 for cleaning or massaging the scalp S or the like by repeatedly opening and closing each of the protrusions 5 to 7 by repeatedly bending in the direction intersecting with the tip 5A of the first protrusion 5 By providing the micro protrusions 28 in the height direction, the micro protrusions 28 enter between the hairs T on the scalp S when the scalp S is washed or massaged. Since the protrusion 28 directly contacts the scalp S, the hair T is not pinched between the first protrusion 5 and the scalp S, that is, the hair T is prevented from being damaged, and the scalp S is cleaned and massaged well. It is something that can be done.

  Further, by providing three each of the micro protrusions 28 on the front end portion 5A of the first protrusion 5 so as to have a gap 29 having a front end side opening 29A and a side opening 29B therebetween, the first When the one protrusion 5 is brought into contact with the scalp S, the hair T can enter the gap 29 from the distal end side opening 29A and pass through the one side opening 29B to the other side opening 29B. The fine protrusion 28 and the scalp S are reliably brought into contact with each other, so that the scalp S can be cleaned and massaged well without damaging the hair T and without being disturbed by the hair T.

  In addition, since the height H5 of the minute protrusion 28 is higher than the diameter D of the hair T and the width W4 of the gap 29 is wider than the diameter D of the hair T, the hair T can freely enter the gap 29. Since it can enter or exit, it is possible to prevent the hair T from being damaged when the scalp S is washed or massaged.

  Furthermore, in this embodiment, the height H5 of the fine protrusions 28 is sufficiently higher than the diameter D of the hair T, and the width W4 of the gap 29 is sufficiently wider than the diameter D of the hair T. The scalp S can be washed or massaged without damaging these hairs T even in a state where a plurality of Ts are straddled.

  6 and 7 show the second embodiment. In Example 2, the configuration of the electric brush device main body 2 is the same as that of Example 1, and only the brush part 30 is different from the brush part 3 of Example 1. Therefore, only the brush part 30 is described in the drawings. The description of the electric brush device main body 2 is omitted. In the second embodiment, the brush portion 30 includes a substrate 31 and a first protrusion 32, a second protrusion 33, and a third protrusion 34 that are integrally provided so as to protrude in a direction intersecting the surface 31S of the substrate 31. Has been. The substrate 31 has an elliptical shape in plan view and is formed of an elastomer having flexibility and elasticity. The edge 31A of the substrate 31 is fixed to the frame 8 of the electric brush device main body 2 so as to be detachable.

  The brush part 30 will be described in detail. The first protrusion 32 and the second protrusion 33 are provided in an elliptical shape along the edge 31A of the substrate 31 with a central axis Y defined so as to pass up and down substantially through the center of the substrate 31. In addition, the third protrusion 34 is provided inside the first and second protrusions 32 and 33 and arranged in a circle around the central axis Y.

  The first protrusions 32 provided at intervals are provided at a plurality of intervals so as to face each other with the central axis Y as a center. In this example, a total of eight first protrusions 32 are provided by providing a group of four elliptical arcs arranged in two positions so as to be axially symmetric. The contact surface 35 of the first protrusion 32 with the scalp S is formed with a rounded tip 35A. On the other hand, the abutment surface 35 of the first protrusion 32 has a substantially constant width W5 from the intermediate portion to the base end 35B, or is slightly narrower on the base end 35B side. The abutment surface 35 recedes in a curved convex shape from the base end 35B side to the tip end 35A side so that the distance L from the central axis Y is longer on the tip end 35A side than the base end 35B side. Yes. That is, as shown in FIG. 7, the abutment surface 35 has a smaller inclination as it goes from the proximal end 35B to the distal end 35A.

  The second protrusion 33 is formed integrally with the substrate 31 between the ends of the first protrusion 32 group arranged in an elliptical arc shape. In the embodiment, a pair of the second protrusions 33 are provided opposite to both ends of the long-diameter direction of the substrate 31. The second protrusion 33 has a convex curved contact surface 36 facing the central axis Y. Like the contact surface 35 of the first protrusion 32, the contact surface 36 is rounded at the tip end 36A side, and the width W6 is substantially constant from the intermediate portion to the base end 36B, or the base end 36B side is It has a slightly narrow shape. The projecting dimension of the second projection 33 from the base end 36B to the tip end 36A is smaller than the projecting dimension of the first projection 32 from the base end 35B to the tip end 35A. Further, since the second protrusion 33 itself is formed at both ends in the major axis direction of the substrate 31, the first protrusion 32 does not move as much as the substrate 31 is bent.

  Further, the plurality of third protrusions 34 arranged in a circle with the central axis Y as a center are arranged in a circular shape with a slightly narrower tip side and a rounded tip end, from the base end to the tip end. Is smaller than the projecting dimension of the first protrusion 32 and the projecting dimension of the second protrusion 33.

  An attachment recess 37 is formed on the tip 35 </ b> A side of the contact surface 35 of the first protrusion 32, and the contact piece 38 is detachably attached to the attachment recess 37. The contact piece 38 includes a base 39 and a plurality of minute protrusions 40 formed integrally with the base 39. In the present embodiment, the micro protrusions 40 are provided on the base 39 in three rows vertically and two rows horizontally. A gap 41 is formed between the minute protrusions 40. In addition, the height from the proximal end to the distal end of each of the minute protrusions 40 is set to 0.15 mm or more, preferably 1 mm or more so as to be higher than the diameter D of the hair T. In addition to the height direction of each of the minute protrusions 40, the gap 41 is open to the front and rear sides of the minute protrusions 40 and to the left and right sides. For this reason, the front end side opening 41 </ b> A and the side opening 41 </ b> B are formed in the gap 41. The width 41 of the gap 41 is 0.15 mm or more, preferably 1 mm or more so as to be wider than the diameter D of the hair T (W7> 0.15 mm). The contact piece 38 is made of a material harder than the elastomer constituting the substrate 31 and the protrusions 32 to 34. An attachment recess 42 is also formed on the tip 36A side of the contact surface 36 of the second protrusion 33, and the contact piece 38 is detachably attached to the attachment recess 42.

  In the present embodiment, as in the first embodiment, when the protrusions 32 to 34 of the brush portion 30 are pressed against the scalp S, the contact surface 35 of the first protrusion 32 and the scalp S, or the The hair T is sandwiched between the contact surface 36 of the second protrusion 33 and the scalp S, and the contact surfaces 35, 36 rub against the hair T to damage the hair T, or the contact surfaces 35, 36 are There is a possibility that the scalp S is not in direct contact with the scalp S and cannot be cleaned or massaged well. However, as described above, the contact piece 38 is configured by forming a plurality of the minute protrusions 40 on the base 39 with the gap 41 therebetween, and the contact piece 38 is formed by the first piece. Since the mounting protrusion 37 of the first protrusion 32 and the mounting recess 42 of the second protrusion 33 are attached, the contact surface 35 of the first protrusion 32 and the contact surface 36 of the second protrusion 33 are contacted with the scalp S. When contacted, the plurality of microprojections 40 directly contact the scalp S, and the hair T enters the gap 41 between the microprojections 40. That is, the hair T enters the gap 41 from the tip side opening 41A and passes from one side opening 41B to the other side opening 41B. As a result, since the minute protrusions 40 are in direct contact with the scalp S, the scalp S can be cleaned or massaged without damaging the hair T by these minute protrusions 40.

  Since the minute protrusion 40 is formed thinner than the protrusions 32 to 34, the contact piece 38 is formed of a material harder than the elastomer constituting the substrate 31 and the protrusions 32 to 34. Even so, it is more easily damaged than the protrusions 32 to 34. However, since the contact piece 38 is detachable with respect to the first protrusion 32 and the second protrusion 33, only the contact piece 38 having the minute protrusion 40 that is easily damaged is exchanged. Thus, the brush part 30 can be used for a long time.

  Furthermore, even if the fine protrusion 40 is made thin by making the material of the contact piece 38 harder than the material of the protrusions 32 to 34, when scalp S is washed, the scalp S is rubbed well. In addition, the scalp S can be sufficiently stimulated when the scalp S is massaged. That is, the characteristics of the microprojections 40 can be optimized for scalp S cleaning and massage without being influenced by the characteristics of the relatively flexible projections 32 to 34. Conversely, it can be said that the characteristics of the protrusions 32 to 34 can be optimized for scalp S cleaning and massage without being affected by the characteristics of the material of the microprojections 40.

  FIG. 8 shows a third embodiment. In Example 3, the configuration of the electric brush device main body 2 is the same as that of Example 1, and only the brush part 50 is different from the brush part 3 of Example 1. Therefore, only the brush part 50 is described in the drawings. The description of the electric brush device main body 2 is omitted. In the third embodiment, the brush portion 50 includes a substrate 51 and three types of protrusions 52, 53, and 54 that are integrally provided so as to protrude in a direction intersecting the surface 51S of the substrate 51. The substrate 51 is elliptical in plan view, and is formed of an elastomer having flexibility and elasticity. Further, the substrate 51 is convex outward (that is, curved convex state) in a natural state. And the edge 51A of the said board | substrate 51 is fitted to the frame 8 of the electric brush apparatus main body 2, and is detachably fixed.

  The brush unit 50 will be described in detail. The first protrusions 52 are arranged in an elliptical shape along the edge 51 </ b> A of the substrate 51, with a central axis Z defined so as to pass up and down substantially the center of the substrate 51. Similarly, the second protrusion 53 is provided in an elliptical shape inside the first protrusion 52 with the central axis Z as the center. Further, the third protrusion 54 is provided inside the second protrusion 53 so as to be arranged in a circle around the central axis Z. An annular wall 55 is provided so as to connect the third protrusions 54 to each other. Further, the substrate 51 is provided with a small through-hole-shaped first communication portion 56 and a second communication portion 57 that communicate between the inside and the outside of the region surrounded by the electric brush device main body 2 and the brush portion 50. The second communication portion 57 is formed in an area surrounded by the third protrusion 54 and the annular wall 55. On the other hand, the first continuous portion 56 is formed in a region outside the third protrusion 54 and the annular wall 55. The projecting dimension from the proximal end to the distal end of the annular wall 55 is smaller than the height from the proximal end to the distal end of the third protrusion 54 connected by the annular wall 55. Further, the projecting dimension from the proximal end to the distal end of the second protrusion 53 is smaller than the projecting dimension from the proximal end to the distal end of the first protrusion 52, and the projecting dimension from the proximal end to the distal end of the third protrusion 54. Bigger than.

  Then, by forming a cross-shaped cut groove from the tip side of each of the projections 52 to 54, four minute projections 58 to 60 project in the height direction four by four. Provided. These minute protrusions 58 to 60 are provided with gaps 61 to 63 therebetween. In the embodiment, these minute protrusions 58 to 60 are provided at substantially equal intervals. The height from the proximal end to the distal end of each of the minute protrusions 58 to 60 is 0.15 mm or more, preferably 1 mm or more so as to be higher than the diameter D of the hair T. The width of each of the gaps 61 to 63 is 0.15 mm or more, preferably 1 mm or more so as to be wider than the diameter D of the hair T. In addition to the height direction of each of the minute protrusions 58 to 60, the gaps 61 to 63 are opened to the front and rear of each of the minute protrusions 58 to 60 and to the left and right sides. Therefore, the openings 61A to 63A and the side openings 61B to 63B are formed in the gaps 61 to 63.

  Further, a plurality of minute protrusions 64 to 66 are formed in the circumferential direction at intervals on the peripheral surfaces of the protrusions 52 to 54 on the tip end portions 52A to 54A side. And the height from the base end of these microprotrusions 64-66 to the front-end | tip is formed 0.15 mm or more, desirably 1 mm or more so that it may become higher than the diameter D of the hair T. In addition, the interval between the minute protrusions 64 to 66 is 0.15 mm or more, preferably 1 mm or more so as to be wider than the diameter D of the hair T.

  In this embodiment, as in the first and second embodiments, when the projections 52 to 54 of the brush portion 50 are pressed against the scalp S, the tip portions 52A to 54A of the projections 52 to 54 and the scalp S The hair T is sandwiched between the tips 52A to 54A and the hair T is rubbed against the hair T, or the tips 52A to 54A are not in direct contact with the scalp S. Or there is a possibility that it becomes impossible to massage. However, as described above, by forming a cross-shaped cut groove in the tip portions 52A to 54A of the protrusions 52 to 54, a plurality of the protrusions 52 to 54 are separated from each other by the gaps 61 to 63. Since the minute protrusions 58 to 60 are formed, when the tip portions 52A to 54A of the protrusions 52 to 54 are brought into contact with the scalp S, the plurality of minute protrusions 58 to 60 directly contact the scalp S. The hair T comes into contact with the gaps 61 to 63 between the minute protrusions 58 to 60. That is, the hair T enters the gaps 61 to 63 from the tip side openings 61A to 63A, and passes from one side opening 61B to 63B to the other side openings 61B to 63B. As a result, since the minute protrusions 58 to 60 are in direct contact with the scalp S, the scalp S can be cleaned or massaged without damaging the hair T by the minute protrusions 58 to 60.

  Further, the plurality of minute protrusions 64 to 66 are formed in the circumferential direction at intervals on the peripheral surfaces of the protrusions 52 to 54 on the tip end parts 52A to 54A side, so that the brush part 50 is formed. Even if the protrusions 52 to 54 are bent by being pressed against the scalp S, the minute protrusions 64 to 66 directly contact the scalp S. As a result, the scalp S can be washed or massaged without damaging the hair T by these fine protrusions 64-66.

  In this embodiment, as in the first and second embodiments, the minute protrusions 58 to 60 are not added to the tip portions 52A to 54A of the protrusions 52 to 54, but the protrusions 52 to 54 are provided. By forming a cross-shaped cut groove in the tip portions 52A to 54A of the 54, the minute projections 58 to 58 are relatively inserted into the tip portions 52A to 54A of the projections 52 to 54 via the gaps 61 to 63, respectively. By providing 60, the scalp S can be washed or massaged without damaging the hair T by each of the fine protrusions 58 to 60 as in the first and second embodiments.

  As described above, the electric brush device according to the present invention is not limited to the above embodiments, and various modifications can be made within the scope of the gist of the invention. For example, in the structure of each of the above embodiments, the number of the minute protrusions is arbitrary as long as the conditions of the gap width and the height of the minute protrusions can be satisfied. In the third embodiment, the shape of the groove may be other than a cross shape, for example, a Y shape or a * shape.

DESCRIPTION OF SYMBOLS 1 Electric brush apparatus 2 Electric brush apparatus main body (drive part)
3, 30, 50 Brush part 4, 31, 51 Substrate 4S, 31S, 51S Surface 5, 32, 52 First protrusion (protrusion)
5A, 52A Tip 6, 33, 53 Second protrusion (protrusion)
6A, 53A Tip 7, 34, 54 Third protrusion (protrusion)
54A tip 8 frame 12 reciprocating drive means 28, 40, 58, 59, 60 microprojections 29, 41, 61, 62, 63 gaps 29A, 40A, 58A, 59A, 60A tips opening 29B, 40B, 58B, 59B, 60B Side opening 38 Contact piece

Claims (4)

It has a drive part and a brush part operated by this drive part, and this brush part is composed of a substrate made of a flexible material and a plurality of protrusions provided to protrude from the surface of this substrate. In the electric brush device, the drive unit is provided with a frame body that holds the periphery of the substrate, and a reciprocating drive unit that is connected to the substrate and bends the substrate in a direction intersecting the surface of the substrate.
The electric brush device is characterized in that minute projections are provided in the height direction on the tip side of each projection.   A plurality of the micro projections are provided at the tip portions of the respective projections, and the micro projections are provided through a gap between the tip side and the side. The electric brush device according to claim 1.   The electric brush device according to claim 1 or 2, wherein the contact piece on which the minute protrusion is formed is configured to be detachable from the protrusion.   4. The electric brush device according to claim 3, wherein a material of the contact piece is different from a material of the protrusion.

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