JP5991653B2 - Oral hygiene equipment - Google Patents

Description

  The present invention relates to an oral hygiene device including a functional component that acts on the oral cavity and a device main body that supports the functional component.

  Patent Document 1 discloses an electric toothbrush as an example of an oral hygiene device. This electric toothbrush has a main body case, a gripping case, a toothbrush component (functional component), a cap, and an electric motor. The main body case and the toothbrush component have a structure that can be coupled and separated from each other.

JP 2009-294635 A

  The electric toothbrush has no function other than the function of brushing teeth. For this reason, there is room for improvement from the viewpoint of convenience of the oral hygiene device. In addition, although the subject of the electric toothbrush was mentioned here, other oral hygiene apparatuses have the same subject.

  In order to solve the above-described problems, an object of the present invention is to provide an oral hygiene device having various functions.

  -The oral hygiene apparatus of this invention is an oral hygiene apparatus containing the functional component which acts on an oral cavity, and the apparatus main body which supports the said functional component, The said functional component has a 1st functional component and a 2nd functional component. The first functional component has a space for accommodating the second functional component, the second functional component is located in a space in the first functional component, and the apparatus main body and the first functional component are And a first part coupling structure for coupling and separating the device main body and the first functional part from each other, wherein the oral hygiene device prevents intrusion of foreign matter into the space in the first functional part. It has a structure.

-In this oral hygiene apparatus, it is preferable that the said intrusion control structure has an elastic member which seals the clearance gap between the said apparatus main body or the said 2nd functional component, and the said 1st functional component.
In this oral hygiene device, the elastic member is located between the inner surface of the first functional component and the outer surface of the second functional component, and is disposed on the inner surface of the first functional component and the outer surface of the second functional component. It is preferable to adhere.

  In this oral hygiene device, the device main body, the first functional component, or the second functional component has a mounting groove into which the elastic member is fitted, and the elastic member is a basic elasticity that is fitted into the mounting groove. And a deformation elastic portion protruding from the basic elastic portion, and the deformation elastic portion is a member having the mounting groove of the device main body, the first functional component, and the second functional component. It is preferable that the deformation elastic portion is in contact with the surface of the opposing member, and the thickness of the deformation elastic portion is smaller than that of the basic elastic portion.

-In this oral hygiene apparatus, it is preferable that the apparatus main body has an insertion part inserted into the space in the first functional component, and the elastic member is attached to the insertion part.
-This oral hygiene apparatus WHEREIN: It is preferable that the said elastic member has a part exposed to the outer surface side of a said 1st functional component.

  -In this oral hygiene apparatus, it is preferable that the said apparatus main body and the said 2nd functional component have a 2nd components coupling | bonding structure for couple | bonding and isolate | separating the said apparatus main body and the said 2nd functional component mutually.

  -In this oral hygiene apparatus, the said apparatus main body has a main body coupling | bond part by which the said 2nd functional component is fitted as said 2nd part coupling | bonding structure, The said main body coupling | bond part is an attachment groove by which the said elastic member is fitted. It is preferable to have a ventilation groove formed across the attachment groove in the width direction of the attachment groove.

In this oral hygiene device, it is preferable that the first functional component has a ventilation portion that communicates the space in the first functional component with the outside of the first functional component.
-This oral hygiene apparatus WHEREIN: It is preferable that the said ventilation | gas_flowing part has a communicating hole which penetrates the wall part of a said 1st functional component.

-In this oral hygiene device, it is preferable that the ventilation part has a semipermeable membrane that constitutes a part of the wall portion of the first functional component.
In this oral hygiene device, the oral hygiene device as an electric toothbrush preferably includes a toothbrush component as the first functional component and an electric motor having an output shaft with an eccentric weight.

  The present invention provides an oral hygiene device having various functions.

BRIEF DESCRIPTION OF THE DRAWINGS About the oral-hygiene apparatus of 1st Embodiment of this invention, (a) is a perspective view which shows a perspective structure, (b) is a perspective view which shows the perspective structure of the partially broken state of a cap. About the oral hygiene apparatus of 1st Embodiment, (a) is a perspective view which shows the perspective structure of the state in which the cap was isolate | separated, (b) is the perspective structure of the state where a part of toothbrush attachment was fractured | ruptured in (a). FIG. About the oral hygiene apparatus of 1st Embodiment, (a) is a perspective view which shows the perspective structure of the state in which a part of holding | grip case was fractured | ruptured in FIG.2 (b), (b) is an outer case and decoration in (a) The perspective view which shows the perspective structure of the state by which a part of ring was fractured | ruptured. As for the oral hygiene device of the first embodiment, (a) is a perspective view showing a perspective structure in which a part of the inner case is broken in FIG. 3 (b), and (b) is a dry battery omitted in (a). FIG. About the oral hygiene apparatus of 1st Embodiment, (a) is a side view which shows left side structure, (b) is a front view which shows front structure, (c) is a top view which shows planar structure, (d) is bottom structure FIG. About the oral hygiene apparatus of 1st Embodiment, (a) is a side view which shows the left side structure of the state in which the cap was isolate | separated, (b) is a front view which shows a front structure, (c) is a top view which shows a planar structure (D) is a bottom view showing a bottom structure. About the oral hygiene apparatus of 1st Embodiment, (a) is a side view which shows the left side structure of the state from which the toothbrush attachment was isolate | separated, (b) is a front view which shows the front structure of the same state, (c) is the same state The top view which shows the planar structure of (d), The bottom view which shows a bottom face structure. The perspective view which shows an exploded perspective structure about the oral-hygiene apparatus of 1st Embodiment. The schematic diagram which shows typically the relationship of each component about the oral-hygiene apparatus of 1st Embodiment. About the oral hygiene apparatus of 1st Embodiment, (a) is sectional drawing which shows the cross-sectional structure of D5A-D5A plane of FIG. 5, (b) is sectional drawing which shows the cross-sectional structure of D5B-D5B plane of FIG. About the cap of the oral hygiene apparatus of 1st Embodiment, (a) is a front view which shows a front structure, (b) is sectional drawing which shows the cross-sectional structure of the right direction view in D11A-D11A plane, (c) is D11A-D11A. Sectional drawing which shows sectional structure of the left view in a plane, (d) is sectional drawing which shows sectional structure in D11B-D11B plane, (e) is sectional drawing which shows sectional structure in D11C-D11C plane, (f) is D11D -Sectional drawing which shows the cross-sectional structure in D11D plane. (A) is a front view showing the front structure, (b) is a cross-sectional view showing a cross-sectional structure of the D12A-D12A plane of (a), and (c) is (d). ) Is a sectional view showing the sectional structure of the D12B-D12B plane, (d) is a sectional view showing the sectional structure of the D12C-D12C plane, (e) is a sectional view showing the sectional structure of the D12D-D12D plane, (f) is Sectional drawing which shows the cross-sectional structure of D12E-D12E plane. About the toothbrush attachment of the oral hygiene apparatus of 1st Embodiment, (a) is a front view which shows a front structure, (b) is a rear view which shows a back structure, (c) is sectional drawing which shows the cross-section in a D13A-D13A plane (D) is sectional drawing which shows the cross-sectional structure in D13B-D13B plane, (e) is sectional drawing which shows the cross-sectional structure in D13C-D13C plane, (f) is sectional drawing which shows the cross-sectional structure in D13D-D13D plane. About the outer case of the oral hygiene apparatus of 1st Embodiment, (a) is a side view which shows a left side structure, (b) is a side view which shows a right side structure, (c) is a front view which shows a front structure, (d ) Is a rear view showing a rear structure. About the outer case of the oral hygiene apparatus of 1st Embodiment, (a) is a top view which shows a planar structure, (b) is a bottom view which shows a bottom face structure, (c) is sectional drawing which shows the cross-sectional structure in D15A-D15A plane (D) is sectional drawing which shows the cross-sectional structure of the rear view in D15B-D15B plane, (e) is sectional drawing which shows the cross-sectional structure of the front view in D15B-D15B plane. About the outer case of the oral hygiene apparatus of 1st Embodiment, (a) is a perspective view which shows the perspective structure which made the viewpoint the bottom face side and the left side surface, and (b) is the perspective structure which made the viewpoint the plane side and the right side face. FIG. (A) is a left side view showing the left side structure, (b) is a front view showing the front structure, and (c) is a rear view showing the back structure, regarding the stain care attachment of the oral hygiene device of the first embodiment. d) is a sectional view showing a sectional structure in a D17A-D17A plane, (e) is a plan view showing the planar structure, and (f) is a bottom view showing a bottom structure. About the oral hygiene apparatus of 1st Embodiment, (a) is a side view which shows the left side structure of the front-end | tip part of a toothbrush main body, (b) is a front view which shows the front structure of the front-end | tip part of a toothbrush main body, (c) is D18B. Sectional drawing which shows the partial cross section structure in -D18B plane, (d) is sectional drawing which shows the partial cross section structure in D18A-D18A plane. (A) is a side view showing the left side structure, (b) is a side view showing the right side structure, (c) is a front view showing the front structure, and (d) about the inner case of the oral hygiene device of the first embodiment. ) Is a rear view showing a rear structure. (A) is a perspective view showing a perspective structure with the bottom side and the left side as a viewpoint, and (b) is a fracture of the inner case of (a) in the XZ plane. The perspective view which shows the state which showed the state, (c) is the perspective view which shows the state by which the inner case of (a) was fractured | ruptured in the YZ plane. About the oral hygiene apparatus of 1st Embodiment, (a) is sectional drawing which shows the state by which the cap and toothbrush attachment were abbreviate | omitted in Fig.10 (a), (b) is abbreviate | omitting a cap and toothbrush attachment in FIG.10 (b). Sectional drawing which shows the state made. About the oral hygiene apparatus of 1st Embodiment, (a) shows the front structure of the part of an upper direction rather than a decoration ring, and the front view which shows the state by which the cap was fractured | ruptured in the YZ plane, (b) is from a decoration ring The back view which shows the back surface structure of a part of an upper direction, and shows the state by which the cap was fractured | ruptured in the YZ plane. About the oral hygiene apparatus of 1st Embodiment, (a) is a side view which shows the left side structure of the part above an ornamental ring, and the state in which the toothbrush attachment was fractured | ruptured in XZ plane, (b) is an ornament The rear view which shows the back surface structure of the part above a ring, and shows the state by which the toothbrush attachment was fractured | ruptured in XZ plane. About the oral hygiene apparatus of 1st Embodiment, (a) is sectional drawing which shows the state which a part of upper coupling | bond part entered into the toothbrush attachment, (b) is a state from which the part of an upper coupling | bond part is (a). Sectional drawing which shows the state which further entered the toothbrush attachment, (c) is sectional drawing which shows the state which a part of upper coupling part approached further into the toothbrush attachment from the state of (b), (d) is upper coupling part Sectional drawing which shows the state which the toothbrush attachment and each other couple | bonded. About the oral hygiene apparatus of 1st Embodiment, (a) is sectional drawing which shows the cross-sectional structure of D24A-D24A plane of FIG. 24, (b) is sectional drawing which shows the cross-sectional structure of D24B-D24B plane of FIG. About the oral hygiene apparatus of 1st Embodiment, (a) is sectional drawing which shows the front end coupling | bond part in FIG. 10 (a), an upper coupling | bond part, and the cross-sectional structure of the periphery, (b) is sectional structure of D26A-D26A plane (C) is sectional drawing which shows the sectional structure of D26B-D26B plane, (d) is sectional drawing which shows the sectional structure of D26C-D26C plane. About the oral hygiene apparatus of 1st Embodiment, (a) is a side view which shows the left side structure of the state by which the holding case was fractured | ruptured in XZ plane, (b) is the right side of the state in which the holding case was fractured in XZ plane The side view which shows a structure. About the oral hygiene apparatus of 1st Embodiment, (a) is a front view which shows the front structure of the state by which the holding | grip case was fractured | ruptured in the YZ plane, (b) is the back structure of the state by which the holding case was fractured | ruptured in the YZ plane FIG. About the oral hygiene apparatus of 1st Embodiment, (a) is equivalent to the cross-sectional structure of D27A-D27A plane of FIG. 27 and FIG. 28, and is a cross section which shows the isolation | separation state as a relative rotation state of a main body case and a holding case FIG. 29B is a cross-sectional view corresponding to the cross-sectional structure of the D27B-D27B plane of FIGS. 27 and 28 and showing a separated state as a relative rotation state of the main body case and the gripping case. About the oral hygiene apparatus of 1st Embodiment, (a) is equivalent to the cross-sectional structure of D27A-D27A plane of FIG. 27 and FIG. 28, and is a cross section which shows the OFF state as a relative rotation state of a main body case and a holding | grip case. FIG. 29B is a cross-sectional view corresponding to the cross-sectional structure of the D27B-D27B plane of FIGS. 27 and 28 and showing an off state as a relative rotation state of the main body case and the gripping case. About the oral hygiene apparatus of 1st Embodiment, (a) is equivalent to the cross-sectional structure of D27A-D27A plane of FIG. 27 and FIG. 28, and is a cross section which shows the ON state as a relative rotation state of a main body case and a holding | grip case. FIG. 29B is a cross-sectional view corresponding to the cross-sectional structure of the D27B-D27B plane of FIGS. 27 and 28, and showing the ON state as the relative rotation state of the main body case and the gripping case. About the anode metal fitting of the oral hygiene apparatus of 1st Embodiment, (a) is a top view which shows a planar structure, (b) is a side view which shows a left side structure, (c) is a front view which shows a front structure. Regarding the gripping case of the oral hygiene device of the first embodiment, (a) is a plan view showing a planar structure, (b) is a sectional structure of the D27C-D27C plane of FIGS. 27 and 28, and the inner case and the dry battery are Sectional drawing which shows the state abbreviate | omitted, (c) is sectional drawing which shows the sectional structure of the D27C-D27C plane of FIG. 27 and FIG. 28, and the state where the dry cell was abbreviate | omitted. About the holding case of the oral hygiene apparatus of 1st Embodiment, (a) is a perspective view which shows the perspective structure of FIG.33 (b), (b) is a perspective view which shows the perspective structure of FIG.33 (c). FIG. 34A is a perspective view showing a state where a dry battery is inserted in FIG. 34B, and FIG. 34B is a cross-sectional view in the XZ plane of FIG. Sectional drawing which shows a structure. About the oral hygiene apparatus of 2nd Embodiment of this invention, (a) is a perspective view which shows the perspective structure of the state by which a part of toothbrush attachment was fractured | ruptured, (b), the interdental brush attachment was isolate | separated from the toothbrush main body. The perspective view which shows a state. Regarding the interdental brush attachment of the oral hygiene device of the second embodiment, (a) is a side view showing the left side structure, (b) is a front view showing the front structure, (c) is a rear view showing the back structure, ( d) is a plan view showing a planar structure, and (e) is a bottom view showing a bottom structure. About the oral hygiene apparatus of 2nd Embodiment, (a) is a side view which shows the left side structure of the front-end | tip part of a toothbrush main body, (b) is a rear view which shows the back surface structure of the front-end | tip part of a toothbrush main body, (c) is D38B. Sectional drawing which shows the partial cross section structure in -D38B plane, (d) is sectional drawing which shows the partial cross section structure in D38A-D38A plane. About the oral hygiene apparatus of 2nd Embodiment, (a) is sectional drawing which shows the state which a part of insertion part approached in the front-end | tip coupling | bond part, (b) is a front part from the state of (a) in a part of insertion part. Sectional drawing which shows the state which further approached in the coupling | bond part, (c) is sectional drawing which shows the state which the insertion part and the front-end | tip coupling part couple | bonded together, (d) is a cross section which shows the partial enlarged structure of an insertion part and a front-end | tip coupling part Figure. About the oral hygiene apparatus of 3rd Embodiment of this invention, (a) is a perspective view which shows the perspective structure of the state by which a part of toothbrush attachment was fractured | ruptured, (b), the interdental brush attachment was isolate | separated from the toothbrush main body. The perspective view which shows a state. About the 1st fixed component of the interdental brush attachment in the oral hygiene apparatus of 3rd Embodiment, (a) is a side view which shows a left side structure, (b) is a front view which shows a front structure, (c) is a back structure. The rear view to show, (d) is a top view which shows a planar structure, (e) is a bottom view which shows a bottom face structure. About the 2nd fixing | fixed part of the interdental brush attachment in the oral hygiene apparatus of 3rd Embodiment, (a) is a side view which shows a left side structure, (b) is a front view which shows a front structure, (c) is a back structure. The rear view to show, (d) is a perspective view which shows a perspective structure, (e) is a top view which shows a planar structure, (f) is a bottom view which shows a bottom face structure. About the interdental brush attachment in the oral hygiene apparatus of 3rd Embodiment, (a) is a side view which shows the left side structure, (b) is a front view which shows a front structure, (c) is a rear view which shows a back structure, ( d) is a plan view showing a planar structure, and (e) is a bottom view showing a bottom structure. About the interdental brush attachment in the oral hygiene device of 3rd Embodiment, (a) is sectional drawing which shows the perspective sectional structure of D43A-D43A plane, (b) is sectional drawing which shows the sectional structure of D43A-D43A plane, (c) ) Is a cross-sectional view showing a cross-sectional structure of the D43B-D43B plane. About the oral hygiene apparatus of 3rd Embodiment, (a) is a side view which shows the left side structure of the front-end | tip part of a toothbrush main body, (b) is a rear view which shows the back surface structure of the front-end | tip part of a toothbrush main body, (c) is D45B. Sectional drawing which shows the partial cross-section of -D45B plane, (d) is sectional drawing which shows the partial cross-section of D45A-D45A plane. About the electric toothbrush of 3rd Embodiment, (a) is sectional drawing which shows the state which a part of fixing component entered into the front-end | tip coupling | bond part, (b) is a front-end coupling | bonding from the state of (a), a part of fixing part. Sectional drawing which shows the state which further approached in the part, (c) is sectional drawing which shows the state which the fixing component and the front-end | tip coupling part couple | bonded together, (d) is a cross section which shows the partial expansion structure of a fixing component and a front-end | tip coupling part Figure. About the removal tool of the oral hygiene apparatus of 3rd Embodiment, (a) is a perspective view which shows a perspective structure, (b) is a perspective view which shows the state by which the fitting part was engage | inserted by the front-end | tip coupling part. About the oral hygiene apparatus of 3rd Embodiment, (a) is an operation | movement figure which shows the state by which the removal tool has been arrange | positioned in the removal position, (b) is the state by which the fitting part of the removal tool was pressed on the fixing component. FIG. 4C is an operation diagram illustrating a state in which the fixed component is detached from the tip coupling portion. About the oral hygiene apparatus in other embodiment of this invention, (a) is sectional drawing which shows an example of the cross-section of a rear fitting convex part and a back window part, (b) is a rear fitting convex part and a back window part. Sectional drawing which shows another example of a cross-sectional structure. Sectional drawing which shows the cross-sectional structure of a front-end | tip coupling | bond part, an upper coupling | bond part, and its periphery about the oral-hygiene apparatus in other embodiment of this invention. Sectional drawing which shows the cross-sectional structure of a front-end | tip coupling | bond part, an upper coupling | bond part, and its periphery about the oral-hygiene apparatus in other embodiment of this invention. Sectional drawing which shows the cross-section of the electric toothbrush in a XZ plane about the oral-hygiene apparatus in other embodiment of this invention. Sectional drawing which shows the cross-section of the electric toothbrush in a XZ plane about the oral-hygiene apparatus in other embodiment of this invention. The perspective view which shows the perspective structure of a front-end | tip coupling | bond part about the electric toothbrush in other embodiment of this invention. The perspective view which shows the perspective structure of a front-end | tip coupling | bond part about the electric toothbrush in other embodiment of this invention. About the oral hygiene apparatus in other embodiment of this invention, (a) is a perspective view which shows the perspective structure of the state by which the cap part was fractured | ruptured, (b) is the perspective view of the state by which part of the toothbrush attachment was fractured | ruptured The perspective view which shows a structure.

(First embodiment)
Terms relating to the portable oral hygiene device 1 are defined as follows.
(A) The Z direction indicates the longitudinal direction of the device 1.
(B) The Y direction indicates a direction orthogonal to the Z direction in the front view of the device 1.
(C) The X direction indicates a direction orthogonal to the Z direction in a side view of the device 1.
(D) The X axis represents a coordinate axis that defines the X direction.
(E) The Y axis indicates a coordinate axis that defines the Y direction.
(F) The Z axis indicates a coordinate axis that defines the Z direction.
(G) The XY plane indicates a plane defined by the X axis and the Y axis.
(H) The XZ plane indicates a plane defined by the X axis and the Z axis.
(I) The YZ plane is a plane defined by the Y axis and the Z axis.
(J) The front direction XA indicates a direction from the back side to the front side in the X direction.
(K) The rear direction XB indicates a direction from the front side toward the back side in the X direction.
(L) The right direction YA indicates a direction from the left side to the right side in the Y direction in a front view.
(M) The left direction YB indicates a direction from the right side to the left side in the Y direction when viewed from the front.
(N) The upward direction ZA indicates a direction from the bottom of the device 1 toward the tip in the Z direction.
(O) The downward direction ZB indicates a direction from the tip of the device 1 toward the bottom in the Z direction.
(P) The radial direction indicates the radial direction about the Z axis on the XY plane.
(Q) The outward direction indicates a direction away from the Z axis in the radial direction.
(R) The inward direction indicates a direction approaching the Z axis in the radial direction.

  The radial direction is a virtual circle when a circle formed by fixing the central axis and moving another point is defined as a virtual circle for a line segment connecting the two points of the central axis and another point. This corresponds to the direction of the radius vector which is the radius of.

  FIG. 1A shows an external perspective structure of the portable oral hygiene device 1. The portable oral hygiene device 1 includes an electric toothbrush 2 that cleans teeth and a cap 80 that protects the toothbrush attachment 50 of the electric toothbrush 2. The cap 80 includes an outer peripheral wall portion 81 that covers the periphery of the toothbrush attachment 50, and an upper side wall portion 82 that closes an opening portion on the upper side of the outer peripheral wall portion 81. The upper side wall portion 82 has two vent holes 82A having an arc shape.

  FIG.1 (b) shows the portable oral hygiene apparatus 1 by which the cap 80 was fractured | ruptured in XZ plane in Fig.1 (a). The electric toothbrush 2 includes a toothbrush main body 10 incorporating various components and a toothbrush attachment 50 in which a plurality of bristle bundles 51 are planted.

  Fig.2 (a) shows the portable oral hygiene apparatus 1, ie, the electric toothbrush 2, from which the cap 80 was separated in FIG.1 (b). The toothbrush main body 10 includes a main body case 11 coupled to the toothbrush attachment 50, a gripping case 70 gripped by the user, and a decorative ring 12 that enhances the beauty of the electric toothbrush 2.

  The decorative ring 12 has a plurality of decorative portions 12A. One decorative portion 12A has a quadrangular pyramid shape. Each decorative portion 12 </ b> A is formed at equal intervals in the circumferential direction of the decorative ring 12. The outer surface of the decorative ring 12 (hereinafter referred to as “decorative surface 12Z”) has a shape that makes contact with the installation surface of the portable oral hygiene device 1 at two or more points. The decorative surface 12Z is painted with a deposition paint. The deposited paint forms a film having a metallic luster.

  FIG.2 (b) shows the portable oral hygiene apparatus 1 by which the toothbrush attachment 50 was fractured | ruptured in XZ plane in Fig.2 (a). A part of the main body case 11 is located in a space in the toothbrush attachment 50.

  The toothbrush main body 10 has a stain care attachment 100 at the distal end portion of the main body case 11. The stain care attachment 100 is located in a space in the toothbrush attachment 50.

  FIG. 3 (a) shows the portable oral hygiene device 1 in which the gripping case 70 is broken in the XZ plane in FIG. 2 (b). The main body case 11 has an outer case 20 having a portion exposed to the outside, and an inner case 30 covered with the gripping case 70 and the outer case 20. The gripping case 70 is affixed to the outer peripheral wall 71 that covers the periphery of the outer case 20 and the inner case 30, the lower side wall 72 that closes the lower opening of the outer peripheral wall 71, and the outer surface of the lower side wall 72. Waterproof sheet (not shown).

  FIG. 5D shows a planar structure of the lower wall portion 72. The lower wall portion 72 includes an intermediate recess 72A that is recessed from the outer surface side of the gripping case 70 to the inner space side, four grooves 72B that connect the intermediate recess 72A and the outer peripheral wall portion 71, and a space inside the gripping case 70. And a vent hole 72C that communicates the external space with each other. In addition, it has a waterproof sheet (not shown) that closes the vent hole 72C, an intermediate recess 72A, four grooves 72B, and a product nameplate (not shown) that covers the waterproof sheet. The waterproof sheet is formed of a material that allows passage of gas but does not allow passage of liquid. That is, it has a function of adjusting the internal pressure of the toothbrush body 10.

  FIG. 3B shows the portable oral hygiene device 1 in which the outer case 20 and the decorative ring 12 are broken in the XZ plane in FIG. A part of the inner case 30 is located in a space in the outer case 20. The main body case 11 includes a gripping side seal member 25 that seals a gap between the outer case 20 and the gripping case 70, and a toothbrush side seal member 26 that seals a gap between the outer case 20 and the toothbrush attachment 50.

  The grip-side seal member 25 has a function of preventing external foreign matter from entering the space inside the main body case 11 from the gap between the outer case 20 and the grip case 70. The toothbrush side seal member 26 has a function of preventing external foreign matters from entering the space above the toothbrush attachment 50 from the gap between the outer case 20 and the toothbrush attachment 50. The upper space sealed by the toothbrush side seal member 26 among the spaces formed inside the toothbrush attachment 50 includes a space where the stain care attachment 100 is disposed inside the toothbrush attachment 50.

  As the grip side seal member 25 and the toothbrush side seal member 26, seal members each having a lip shape are used. Synthetic rubber is used as the material for the grip-side seal member 25 and the toothbrush-side seal member 26. As the synthetic rubber, nitrile rubber, silicone rubber, acrylic rubber, styrene butadiene rubber, fluorine rubber, or ethylene propylene rubber can be used. An elastomer may be used instead of the synthetic rubber.

  Fig.4 (a) shows the portable oral hygiene apparatus 1 by which the inner case 30 was fractured | ruptured in XZ plane in FIG.3 (b). The inner case 30 includes a vibration generator 40 that vibrates the toothbrush attachment 50 and a battery holding portion 31 that holds the dry battery 3. The vibration generator 40 includes an electric motor 41, an eccentric weight 43, and a spacer 44.

  FIG.4 (b) shows the portable oral hygiene apparatus 1 from which the dry battery 3 was abbreviate | omitted from Fig.4 (a). The gripping case 70 has an anode fitting 64 that contacts the anode of the dry battery 3. The inner case 30 includes a current-carrying metal fitting 67 connected to the anode metal fitting 64, a cathode metal fitting 63 that contacts the cathode of the dry battery 3, and a circuit board 61 that connects the current-carrying metal fitting 67, the cathode metal fitting 63, and the electric motor 41 to each other. Have.

  A material harder than the material of the brush stay 53 of the toothbrush attachment 50 is used as the material of the main body case 11. Examples of the combination of the material of the main body case 11 and the brush stay 53 include the following. Glass fiber-containing ABS resin is used as the material of the main body case 11, and polyacetal resin is used as the material of the brush stay 53. Alternatively, ABS resin is used as the material of the main body case 11, and polypropylene resin is used as the material of the brush stay 53. In short, if the main body case 11 is a combination of materials having a high hardness with respect to the brush stay 53 within a range having the hardness necessary for maintaining the functions of the main body case 11 and the brush stay 53, Other combinations can be selected without being limited to the combinations exemplified above.

  In addition, the outer case 20 of the main body case 11 uses a material harder than the brush stay 53 as described above in order to maintain a necessary function even when the toothbrush attachment 50 is repeatedly coupled and separated a predetermined number of times. Is preferred. On the other hand, for the inner case 30 of the main body case 11, even if a material softer than the brush stay 53 is used, there is no concern about a decrease in durability due to the connection and separation of the main body case 11 and the toothbrush attachment 50. A material different from that of the case 20 can also be selected.

  With reference to FIG. 5, the structure regarding the external appearance of the portable oral hygiene apparatus 1 is demonstrated. FIG. 5A shows the left side structure of the portable oral hygiene device 1. FIG. 5B shows the front structure of the portable oral hygiene device 1. FIG. 5C shows a planar structure of the portable oral hygiene device 1. FIG. 5D shows the bottom structure of the portable oral hygiene device 1.

  The outer surface 1Z of the portable oral hygiene device 1 has an outer surface of the cap 80 (hereinafter referred to as “cap outer surface 80Z”), a decorative surface 12Z, and an outer surface of the gripping case 70 (hereinafter referred to as “gripping outer surface 70Z”). The cap outer surface 80Z and the gripping outer surface 70Z have a smoothly curved shape.

  As shown in FIG. 5C, the decorative surface 12Z is located outward from the cap outer surface 80Z over the entire periphery of the cap outer surface 80Z. Further, as shown in FIG. 5D, the entire periphery of the gripping outer surface 70Z is positioned outward from the gripping outer surface 70Z.

  As shown in FIG. 5A, portions of the decorative portion 12A corresponding to the front surface and the back surface of the cap outer surface 80Z and the gripping outer surface 70Z are predetermined as outward projecting amounts with respect to the cap outer surface 80Z and the gripping outer surface 70Z. It has a protruding amount LA. The predetermined protrusion amount LA corresponds to the distance between the most outwardly protruding portion of the decorative portion 12A and the cap outer surface 80Z and the gripping outer surface 70Z.

  As shown in FIG. 5B, portions of the decorative portion 12A corresponding to the right side surface and the left side surface of the cap outer surface 80Z and the gripping outer surface 70Z protrude outwardly with respect to the cap outer surface 80Z and the gripping outer surface 70Z. As a predetermined protrusion amount LB. The predetermined protrusion amount LB is larger than the predetermined protrusion amount LA. The predetermined protrusion amount LB corresponds to the distance between the most outwardly protruding portion of the decorative portion 12A and the cap outer surface 80Z and the gripping outer surface 70Z.

  With reference to FIG. 6, the structure regarding the external appearance of the portable oral-hygiene apparatus 1 in the state from which the cap 80 was isolate | separated is demonstrated. FIG. 6A shows the left side structure of the portable oral hygiene device 1. FIG. 6B shows the front structure of the portable oral hygiene device 1. FIG. 6C shows a planar structure of the portable oral hygiene device 1. FIG. 6D shows the bottom structure of the portable oral hygiene device 1.

  The outer surface 2Z of the electric toothbrush 2 includes an outer surface of the toothbrush attachment 50 (hereinafter referred to as “toothbrush surface 50Z”), an outer surface of the outer case 20 (hereinafter referred to as “outer outer surface 20Z”), a decorative surface 12Z, and a gripping outer surface 70Z. Have.

  The decorative surface 12Z is located outward from the toothbrush surface 50Z and the outer outer surface 20Z over the entire periphery of the toothbrush surface 50Z and the outer outer surface 20Z, as shown in FIG. 6 (c).

  As shown in FIG. 6A, portions of the decorative portion 12A corresponding to the front surface and the back surface of the outer outer surface 20Z have a predetermined protrusion amount LC as an outward protrusion amount with respect to the outer outer surface 20Z. The predetermined protruding amount LC corresponds to the distance between the outermost protruding portion 12A and the outermost surface 20Z.

  As shown in FIG. 6B, portions of the decorative portion 12A corresponding to the right side surface and the left side surface of the outer outer surface 20Z have a predetermined protrusion amount LD as an outward protrusion amount with respect to the outer outer surface 20Z. The predetermined protrusion amount LD is larger than the predetermined protrusion amount LC. The predetermined protrusion amount LD corresponds to the distance between the outermost surface 20Z and the outermost protruding portion of the decorative portion 12A.

  With reference to FIG. 7, the structure regarding the external appearance of the portable oral hygiene apparatus 1 in the state in which the toothbrush attachment 50 was isolate | separated is demonstrated. FIG. 7A shows the left side structure of the portable oral hygiene device 1. FIG. 7B shows a front structure of the portable oral hygiene device 1. FIG. 7C shows a planar structure of the portable oral hygiene device 1. FIG. 7D shows the bottom structure of the portable oral hygiene device 1.

  As shown in FIG. 7A, the dimension in the X direction of the tip coupling portion 24 is smaller than the dimension in the X direction of the upper coupling portion 21. The upper portion of the tip coupling portion 24 has a smaller dimension in the X direction than the lower portion of the tip coupling portion 24.

  As shown in FIG. 7C, the toothbrush side seal member 26 protrudes outward from the outer surface of the tip coupling portion 24 in the radial direction. Further, the protruding amount of the toothbrush side seal member 26 with respect to the front surface of the tip coupling portion 24 is larger than the protruding amount with respect to the side surface and the back surface of the tip coupling portion 24.

With reference to FIG. 8 and FIG. 9, the connection structure of each component is demonstrated.
FIG. 8 shows a perspective structure of the portable oral hygiene device 1 separated so as to be separable with the use of the user. The user can separate the portable oral hygiene device 1 into the electric toothbrush 2 and the cap 80. Moreover, the electric toothbrush 2 can be separated into the toothbrush main body 10 and the toothbrush attachment 50. Further, the toothbrush main body 10 can be separated into the main body case 11 and the gripping case 70.

  The main body case 11 has an outer case 20 and an inner case 30. The inner case 30 has a battery holding portion 31 for housing the dry battery 3. The battery holding part 31 has an opening part 31 </ b> A for inserting the dry battery 3 into the space in the battery holding part 31 and for taking out the dry battery 3 from the space in the battery holding part 31.

FIG. 9 shows a schematic connection structure of each component.
The portable oral hygiene device 1 has the following five coupling structures.
(A) The electric toothbrush 2 and the cap 80 have a cap coupling structure R that can be coupled and separated from each other. The cap coupling structure R includes two outer-side fitting portions RA formed on the outer outer surface 20Z and two cap-side fitting portions RB formed on the inner surface of the cap 80 (hereinafter, “cap inner surface 80W”). Have.

  (B) The toothbrush body 10 and the toothbrush attachment 50 have a first part coupling structure S that can be coupled and separated from each other. The first component coupling structure S includes one outer-side fitting portion SA formed on the outer outer surface 20Z and a first component-side fitting portion SB formed on the back wall portion of the toothbrush attachment 50.

  (C) The outer case 20 and the inner case 30 have a main body coupling structure T that can be coupled and separated from each other. The main body coupling structure T includes two inner side fitting portions TA formed on the inner outer surface 30Z and two outer side fitting portions TB formed on the outer outer surface 20Z.

  (D) The main body case 11 and the gripping case 70 have a gripping and coupling structure U that can be coupled and separated from each other. The grip coupling structure U includes an upper grip coupling structure UX that restricts or allows relative rotation of the outer case 20 and the grip case 70, and a lower grip that restricts or allows relative rotation of the inner case 30 and the grip case 70. And a bonding structure UY. The upper grip coupling structure UX and the lower grip coupling structure UY cooperate or separate the main body case 11 and the grip case 70.

  The upper grip coupling structure UX includes two gripping side fitting portions UA formed on the inner surface of the gripping case 70 (hereinafter referred to as “gripping inner surface 70W”) and two outer side fitting portions UB formed on the outer outer surface 20Z. And have.

  The lower grip coupling structure UY includes two grip side fitting portions UC formed on the grip inner surface 70W and one inner side fit portion formed on the outer surface of the inner case 30 (hereinafter, “inner outer surface 30Z”). UD.

  (E) The toothbrush body 10 and the stain care attachment 100 have a second part connection structure V that can be connected and separated from each other. The second part coupling structure V includes an outer side fitting part VA formed in the tip coupling part 24 and a second part side fitting part VB of the stain care attachment 100.

  In addition, the coupling | bonding by each coupling structure in the portable oral hygiene apparatus 1 acts when a force does not act on two components mutually couple | bonded by each coupling structure, or acts in the direction which isolate | separates two components from each other. When the force is smaller than the predetermined force, a state in which these two parts are relatively prevented from operating is shown.

  Fig.10 (a) shows the cross-section of the D5A-D5A plane of FIG. FIG.10 (b) is sectional drawing which shows the cross-sectional structure of D5B-D5B plane of FIG. FIG. 10 shows the appearance of each component located in the main body case 11.

  The upper coupling portion 21 and the tip coupling portion 24 are entirely located within the toothbrush attachment 50. The electric motor 41 is entirely located in the upper coupling portion 21. The outer surface of the intermediate coupling portion 22 faces the cap inner surface 80W. The upper part of the inner case 30 is located in the outer case 20. The lower part of the inner case 30 is located in the gripping case 70.

  The configuration of the cap 80 will be described with reference to FIG. FIG. 11A shows the front structure of the cap 80. FIG. 11B shows a cross-sectional structure of the cap 80 viewed from the right direction YA in the D11A-D11A plane of FIG. FIG.11 (c) shows the cross-section of the cap 80 of the left direction YB view in the D11A-D11A plane of Fig.11 (a). FIG.11 (d) shows the cross-section of the cap 80 in the D11B-D11B plane of Fig.11 (a)-FIG.11 (c). FIG.11 (d) shows the cross-section of the cap 80 in the D11C-D11C plane of Fig.11 (a)-FIG.11 (c). FIG.11 (e) shows the cross-section of the cap 80 in D11D-D11D plane of Fig.11 (a)-FIG.11 (c). In FIG. 11, each coordinate axis is omitted. The coordinates in the description regarding FIG. 11 are the same as those shown in FIGS.

  The cap 80 has four contact portions 83 that guide the toothbrush attachment 50 and the outer case 20, and two cap-side fitting portions RB that constitute the cap coupling structure R of FIG. Each contact portion 83 is formed from the vicinity of the opening portion 84 of the cap 80 to the upper side wall portion 82. Each contact portion 83 on the right side and each contact portion 83 on the left side have a positional relationship facing each other about the X axis. Each cap-side fitting portion RB is formed in the vicinity of the opening portion 84 of the cap 80 on the contact portion 83. Further, the contact portion 83 has a shape recessed outward with respect to the cap inner surface 80W.

  The configuration of the gripping case 70 will be described with reference to FIG. FIG. 12A shows the front structure of the gripping case 70. FIG. 12B shows a cross-sectional structure of the gripping case 70 in the D12A-D12A plane of FIG. FIG.12 (c) shows the cross-section of the holding | grip case 70 in the D12B-D12B plane of FIG.12 (b). FIG. 12D shows a cross-sectional structure of the gripping case 70 on the D12C-D12C plane of FIGS. 12A to 12C. FIG.12 (e) shows the cross-section of the holding case 70 in the D12D-D12D plane of Fig.12 (a)-FIG.12 (c). FIG. 12 (f) shows a cross-sectional structure of the gripping case 70 on the D12E-D12E plane of FIGS. 12 (a) to 12 (c). In FIG. 12, each coordinate axis is omitted. The coordinates in the description related to FIG. 12 are the same as those shown in FIGS.

  The gripping case 70 includes two gripping side fitting portions UA that constitute the upper gripping coupling structure UX in FIG. 9, two gripping side fitting portions UC that constitute the lower gripping coupling structure UY in FIG. Two vertical ribs 76 projecting inward from 70W. In addition to this, a fixing portion 74 for fixing the anode fitting 64 (see FIG. 4) and an opening portion 73 for inserting the main body case 11 into the internal space are provided.

  Each gripping side fitting portion UA is located in the vicinity of the opening portion 73 on the gripping inner surface 70W. One gripping side fitting portion UA and the other gripping side fitting portion UA face each other about the X axis. Each gripping-side fitting portion UC is formed from the lower wall portion 72 of the gripping case 70 to the middle portion in the Z direction. One gripping side fitting portion UC and the other gripping side fitting portion UC have a distance corresponding to the size of the inner side fitting portion UD of the inner case 30 in the circumferential direction.

  Each vertical rib 76 is formed at a position corresponding to the grip-side fitting portion UA around the Z axis. Moreover, it forms from the lower wall part 72 of the holding case 70 to the lower part of the holding side fitting part UA in the Z direction.

  The configuration of the toothbrush attachment 50 will be described with reference to FIG. FIG. 13A shows the front structure of the toothbrush attachment 50. FIG. 13B shows a back structure of the toothbrush attachment 50. FIG.13 (c) shows the cross-section of the toothbrush attachment 50 in the D13A-D13A plane of Fig.13 (a). FIG.13 (d) shows the cross-section of the toothbrush attachment 50 in the D13B-D13B plane of Fig.13 (a)-FIG.13 (c). FIG.13 (e) shows the cross-section of the toothbrush attachment 50 in the D13C-D13C plane of Fig.13 (a)-FIG.13 (c). FIG.13 (e) shows the cross-section of the toothbrush attachment 50 in the D13D-D13D plane of Fig.13 (a)-FIG.13 (c). In FIG. 13, each coordinate axis is omitted. The coordinates in the description relating to FIG. 13 are the same as those shown in FIGS.

  The toothbrush attachment 50 includes a plurality of bristle bundles 51 for cleaning teeth, a brush head 52 in which each bristle bundle 51 is flocked, and a brush stay 53 coupled to the main body case 11. The brush head 52 and the brush stay 53 are formed as a single member from the same resin material.

  The brush stay 53 includes a first component-side fitting portion SB that constitutes the first component coupling structure S of FIG. 9 and a guide rib 54 that is fitted into the guide groove 21A (see FIG. 14) of the outer case 20. In addition, an outer case 20 having a structure different from that of the outer case 20 (hereinafter referred to as “another structure case”) has a rotary coupling structure 55 for coupling and separating from each other. The separate structure case gives a sense of operation to the user when the separate structure fitting convex portion coupled to and separated from the first component side fitting portion SB and the toothbrush attachment 50 are coupled to the separate structure case by the user. Another structural operation feeling imparting unit. In addition, illustration of another structure case is abbreviate | omitted.

  The first part-side fitting portion SB has a through hole formed in the back wall portion of the brush stay 53. The guide rib 54 is formed from the opening portion 59 of the toothbrush attachment 50 to the intermediate portion in the Z direction.

  The rotary coupling structure 55 includes a concave fitting portion 56 for fitting another structural operation feeling imparting section, an operation feeling imparting section 57 that imparts a reaction force to the separate structural operation feeling imparting section, and another structural operation feeling imparting section. And a rotation guide groove 58 for guiding the operation feeling imparting portion 57.

  The concave fitting portion 56 has a regulation elevation surface 56 </ b> A that comes into contact with another structural operation feeling imparting portion fitted into the concave fitting portion 56. The operation feeling imparting portion 57 includes a guide slope 57A that guides the separate structural operation feeling imparting portion to the concave fitting portion 56, and a regulation elevation surface 57B that contacts the separate structural operation feeling imparting portion fitted in the concave fitting portion 56. And an intermediate curved surface 57C that connects the guide slope 57A and the regulation elevation surface 57B. The rotation guide groove 58 has a shape for guiding another structure fitting convex portion from the opening portion 59 to the first component side fitting portion SB.

  When the user joins the toothbrush attachment 50 to another structure case, the user inserts another structure fitting convex portion into the rotation guide groove 58. Next, by rotating the toothbrush attachment 50 around the Z axis with respect to the separate structure case, the separate structure fitting convex portion is fitted into the first component side fitting portion SB. At this time, the separate structural operation feeling imparting portion moves from the rotation guide groove 58 to the concave fitting portion 56 via the guide slope 57A and the intermediate curved surface 57C. The separate structural operation feeling imparting section provides the user with a reaction force from the operation feeling imparting section 57 as an operational feeling when getting over the guide slope 57A and the intermediate curved surface 57C.

  The other structure fitting convex portion fitted into the first component side fitting portion SB is restricted from moving with respect to the brush stay 53 by contact with the back wall portion of the brush stay 53. Thereby, the toothbrush attachment 50 is couple | bonded with another structure case.

  The user separates the toothbrush attachment 50 by giving the brush stay 53 a force necessary for the separate structure fitting convex portion to ride on the inner surface of the back wall portion of the brush stay 53 from the first component side fitting portion SB. It can be separated from the structural case.

  The configuration of the outer case 20 will be described with reference to FIG. FIG. 14A shows the left side structure of the outer case 20. FIG. 14B shows a right side structure of the outer case 20. FIG. 14C shows the front structure of the outer case 20. FIG. 14D shows the back structure of the outer case 20.

  The outer case 20 includes an upper coupling portion 21 coupled to the toothbrush attachment 50, a lower coupling portion 23 coupled to the gripping case 70, and an intermediate coupling portion 22 connecting the upper coupling portion 21 and the lower coupling portion 23 to each other. In addition to this, a tip coupling portion 24 coupled to the stain care attachment 100 is provided. The tip coupling portion 24, the upper coupling portion 21, the intermediate coupling portion 22, and the lower coupling portion 23 are formed as a single member from the same resin material.

  The distal end coupling portion 24 includes one outer side fitting portion VA (see FIG. 15) constituting the second component coupling structure V of FIG. 9, a distal end support portion 24A that supports the stain care attachment 100 in the Z direction, and a toothbrush. And a mounting groove 24B for fitting the side seal member 26 therein. In addition, a front window portion 24C that penetrates the front wall portion of the tip coupling portion 24, a rear window portion 24D that penetrates the rear wall portion of the tip coupling portion 24, and a mounting groove 24B. And a ventilation groove 24F formed across the attachment groove 24B in the width direction.

  The upper coupling portion 21 guides one outer side fitting portion SA constituting the first part coupling structure S of FIG. 9 and the guide rib 54 of the toothbrush attachment 50 toward the facing surface 22C of the intermediate coupling portion 22. A groove 21A is provided.

  The intermediate coupling portion 22 has two outer side fitting portions RA constituting the cap coupling structure R of FIG. 9 and two fixing portions 22A into which the concave portions of the decorative ring 12 are fitted. In addition, it has a fitting groove 22B into which the grip-side seal member 25 is fitted, and a facing surface 22C that faces the end surface of the toothbrush attachment 50 on the opening portion 59 side. Each fixed portion 22 </ b> A and each outer-side fitting portion RA has a shape protruding in the radial direction from the outer surface of the intermediate coupling portion 22.

  The lower coupling portion 23 has two outer side fitting portions UB that constitute the upper grip coupling structure UX in FIG. 9 and two outer side fitting portions TB that form the main body coupling structure T in FIG. 9. Each outer-side fitting portion TB has a hole that penetrates a part of the wall portion of the lower coupling portion 23.

  Each outer-side fitting portion UB has a first rotation groove UB1 for restricting the movement range of the holding-side fitting portion UA of the upper holding coupling structure UX, and a first rotation groove UB for guiding the holding-side fitting portion UA to the first rotation groove UB1. 2 rotation groove UB2, and boundary rib UB3 located in the boundary of 1st rotation groove UB1 and 2nd rotation groove UB2. The boundary rib UB3 moves when the gripping side fitting portion UA moves from the second rotation groove UB2 to the first rotation groove UB1, and when the gripping side fitting portion UA moves from the first rotation groove UB1 to the second rotation groove UB2. At this time, the gripping case 70 has a function of applying a reaction force.

  One outer side fitting portion UB and outer side fitting portion TB are located on the right side surface of the outer surface of the lower coupling portion 23. The other outer side fitting portion UB and outer side fitting portion TB are located on the left side of the outer surface of the lower coupling portion 23.

  The internal configuration of the outer case 20 will be described with reference to FIG. FIG. 15A shows a planar structure of the outer case 20. FIG. 15B shows the bottom structure of the outer case 20. FIG. 15C shows a cross-sectional structure of the D15A-D15A plane of FIG. FIG. 15D shows a cross-sectional structure in the rear direction XB in the D15B-D15B plane of FIG. FIG. 15E shows a cross-sectional structure as viewed from the front direction XA on the D15B-D15B plane of FIG.

  The inner surface of the intermediate coupling portion 22 includes a side rib 22D that comes into contact with a side regulating portion 32C (see FIG. 19) of the inner case 30 and a front rib 22E that is fitted into the front regulating portion 32D (see FIG. 19) of the inner case 30. Have. The side ribs 22D and the front ribs 22E have shapes extending in the longitudinal direction of the outer case 20.

  The inner surface of the distal end coupling portion 24 has four vertical ribs that come into contact with the opposing portion 24G facing the flat portion 132 (see FIG. 26) of the insertion portion 130 and the outer surface of the insertion portion 130 (see FIG. 17) of the stain care attachment 100. 24H. The two vertical ribs 24H are positioned adjacent to the front window portion 24C. The other two vertical ribs 24H are located at positions adjacent to the rear window portion 24D in the facing portion 24G. Each vertical rib 24 </ b> H is formed from the opening portion to the bottom surface of the tip coupling portion 24.

With reference to FIG. 16, the shape of the outer side fitting part SA is demonstrated.
The outer-side fitting portion SA includes two upright wall portions SA1 projecting from the outer surface of the upper coupling portion 21 toward the rear direction XB, and the outer surface of the upper coupling portion 21 between the upright wall portions SA1 in the rearward direction XB. And a projecting intermediate recess SA4. The intermediate recess SA4 forms a recess with respect to each upright wall SA1.

  Each upright wall SA1 has a coupling-side contact surface SA2 that gives the user a feeling of operation when coupled to the toothbrush attachment 50, and a separation-side contact surface SA3 that gives the user a feeling of operation when separated from the toothbrush attachment 50. Have The coupling-side contact surface SA2 has a shape that stands upright in the rear direction XB with respect to the outer surface of the upper coupling portion 21. The separation-side contact surface SA3 has a shape protruding toward the rear direction XB from the lower direction ZB toward the upper direction ZA with respect to the outer surface of the upper coupling portion 21.

  The structure of the stain care attachment 100 will be described with reference to FIG. FIG. 17A shows the left side structure of the stain care attachment 100. FIG. 17B shows a front structure of the stain care attachment 100. FIG. 17C shows the back structure of the stain care attachment 100. FIG. 17D shows a cross-sectional structure of the stain care attachment 100 in the plane D17A-D17A. FIG. 17E shows a planar structure of the stain care attachment 100. FIG. 17 (f) shows a bottom structure of the stain care attachment 100.

  The stain care attachment 100 includes an attachment main body 110 that directly contacts a site in the oral cavity, and a core member 140 that maintains the shape of the insertion portion 130 of the attachment main body 110.

  The attachment main body 110 includes a cleaning portion 120 that cleans a site in the oral cavity and an insertion portion 130 that supports the cleaning portion 120. The insertion portion 130 corresponds to the second component side fitting portion VB (see FIG. 9) of the second component coupling structure V.

  The cleaning portion 120 includes a working surface 121 for removing tooth stain by polishing teeth, a support surface 122 that contacts a tip support portion 24A (see FIG. 14) of the tip coupling portion 24, and a periphery of the support surface 122. And a portion subjected to R processing.

  The insertion portion 130 has an insertion hole 131 into which the core member 140 is inserted, and a flat portion 132 that contacts the facing portion 24G (see FIG. 26) of the outer side fitting portion VA. The action surface 121 is inclined from the rear direction XB to the front direction XA as it goes from the upper direction ZA to the lower direction ZB.

  As a material of the attachment main body 110 and the insertion portion 130, silicone rubber containing an abrasive is used. As the material of the core member 140, a material having higher rigidity than the attachment main body 110 and the insertion portion 130 is used. An example of this material is polyacetal.

  With reference to FIG. 18, the detail of the 2nd components coupling | bonding structure V is demonstrated. FIG. 18A shows the left side structure of the tip coupling portion 24. FIG. 18B shows a front structure of the tip coupling portion 24. FIG. 18C shows a cross-sectional structure of the D18B-D18B plane of FIG. FIG. 18D shows a cross-sectional structure taken along the plane D18A-D18A in FIG.

  The upper joint portion 21 of the outer case 20, the tip joint portion 24 of the outer case 20, and the insertion portion 130 of the stain care attachment 100 each have a central axis orthogonal to the XY plane.

  In the XZ plane of the electric toothbrush 2, the central axis of the upper coupling portion 21, the central axis of the tip coupling portion 24, and the central axis of the insertion portion 130 are parallel to each other. The central axis of the tip coupling portion 24 and the central axis of the insertion portion 130 are located in the rear direction XB with respect to the central axis of the upper coupling portion 21. The tip coupling portion 24 and the insertion portion 130 are coaxial.

  The entire insertion portion 130 of the attachment main body 110 is inserted into the outer side fitting portion VA of the tip coupling portion 24. The support surface 122 of the cleaning portion 120 contacts the tip support portion 24 </ b> A of the tip coupling portion 24.

  The front side portion of the outer surface of the insertion portion 130 is exposed to the outside of the tip coupling portion 24 through the front window portion 24C. The back side portion of the outer peripheral surface of the insertion portion 130 is exposed to the outside of the tip coupling portion 24 via the rear window portion 24D.

  When the toothbrush body 10 is viewed from the front, the ends of the support surface 122 in the right direction YA and the left direction YB are located on the outer side than the ends of the tip support portion 24A in the right direction YA and the left direction YB. In the side view of the toothbrush body 10, the end in the rear direction XB of the support surface 122 is located on the outer side than the end in the rear direction XB of the tip support portion 24A. Further, the end in the front direction XA of the support surface 122 is located on the inner side of the end in the front direction XA of the tip support portion 24A.

  The toothbrush side seal member 26 includes an annular portion 26A that is fitted into the mounting groove 24B, and a protruding portion 26B that protrudes outward from the annular portion 26A. The thickness of the protruding portion 26B is smaller than the thickness of the annular portion 26A. The distal end portion of the protruding portion 26B comes into contact with the portion facing the mounting groove 24B on the inner surface of the toothbrush attachment 50 (see FIG. 23). The annular portion 26A and the protruding portion 26B are formed as an integral member from the same rubber material.

The configuration of the inner case 30 will be described with reference to FIG.
The inner case 30 includes a battery holding portion 31 that holds the dry battery 3 (see FIG. 8), a substrate holding portion 32 that holds the circuit board 61, and a device holding portion 33 that holds the vibration generator 40.

  The battery holding portion 31 includes two inner side fitting portions TA constituting the main body coupling structure T, an opening portion 31A for inserting and removing the dry battery 3, and a sandwiching portion 31B for sandwiching the dry battery 3. In addition to this, a notch portion 31C for exposing a part of the dry cell 3 housed in the battery holding portion 31, a cathode fitting portion 31D for fitting the cathode fitting 63 (see FIG. 20), and a current-carrying fitting And an anode insertion portion 31E for fitting 67 (see FIG. 20). In addition to this, a base portion 31F as a wall portion having high strength and three support portions 31G that connect the inner side fitting portion TA to the base portion 31F are provided.

  Each inner side fitting portion TA is supported by three support portions 31G with respect to the base portion 31F. Further, a portion of the inner outer surface 30Z surrounded by the three support portions 31G protrudes outward from the inner outer surface 30Z.

  The anode insertion portion 31E is formed from one end portion to the other end portion on the outer surface of the battery holding portion 31. Moreover, it has a some protrusion for fixing the electricity supply metal fitting 67 by heat crimping.

  Each clamping part 31B inclines from the outer side toward the inner side as it goes from the connecting part with the wall part of the battery holding part 31 toward the tip part. For this reason, when the dry cell 3 is inserted into the battery holding portion 31, each sandwiched portion 31 </ b> B is pushed out from the inside to the outside by contact with the dry cell 3.

  The substrate holding portion 32 includes two connection portions 32A for connecting a part of the wall portion of the substrate holding portion 32 and a portion of the wall portion of the apparatus holding portion 33 to each other and a circuit board 61 (see FIG. 20). And a hook portion 32B. In addition, it has a side regulating portion 32C that contacts the side rib 22D of the outer case 20, and a front rib 22E into which the front rib 22E of the outer case 20 is fitted. The side regulating portion 32C regulates the rotation of the outer case 20 relative to the inner case 30 around the Z axis by contact with the side rib 22D. The front regulating portion 32D regulates the rotation of the outer case 20 relative to the inner case 30 around the Z axis by contact with the front rib 22E.

The electrical component will be described with reference to FIG.
The electric motor 41 and the spacer 44 are fixed to the device holding portion 33 with an adhesive tape (not shown). The eccentric weight 43 is fixed to the output shaft 42 of the electric motor 41.

  The electric toothbrush 2 has an electrical component group 60 including a plurality of electrical components. The electrical component group 60 includes a circuit board 61 that supplies the electric current of the dry battery 3 to the electric motor 41, a current fuse 62 attached on the circuit board 61, a cathode fitting 63 that contacts the cathode of the dry battery 3, and the dry battery 3. And an anode fitting 64 (see FIG. 4) in contact with the anode. In addition, a current-carrying metal fitting 67 connected to the end of the circuit board 61 of the anode metal fitting 64, and a cathode that connects the end of the cathode metal fitting 63 on the circuit board 61 side and the cathode terminal on the output side of the circuit board 61 to each other. The pattern 65 includes an anode pattern 66 that connects the end of the current-carrying metal fitting 67 on the circuit board 61 side and the anode terminal on the output side of the circuit board 61 to each other.

  The current fuse 62 is located between one of the anode patterns 66 and the other of the anode patterns 66. The cathode fitting 63 is fixed to the substrate holding portion 32 of the inner case 30. The end of the cathode fitting 63 on the circuit board 61 side is connected to the cathode terminal on the input side of the circuit board 61. The current-carrying metal fitting 67 is fixed to the anode fitting portion 31E of the battery holding portion 31. The cathode terminal on the output side of the circuit board 61 is connected to the cathode terminal of the electric motor 41. The anode terminal on the output side of the circuit board 61 is connected to the anode terminal of the electric motor 41.

  With reference to FIG. 21, an electric circuit formed of electric components will be described. FIG. 21A shows a state where the cap 80 and the toothbrush attachment 50 are omitted in FIG. FIG. 21B shows a state where the cap 80 and the toothbrush attachment 50 are omitted in FIG.

  When the dry battery 3 is inserted into the battery holding portion 31 and when the anode fitting 64 and the energizing fitting 67 are in contact with each other, the electrical component group 60 includes the anode of the dry battery 3, the anode fitting 64, the energizing fitting 67, A closed circuit is formed in which the anode pattern 66 of the circuit board 61, the electric motor 41, the cathode pattern 65 of the circuit board 61, the circuit board 61, the cathode fitting 63, and the cathode of the dry battery 3 are connected in this order.

  The current fuse 62 interrupts the closed circuit formed by the electrical component group 60 when the current flowing through the closed circuit is larger than the rated current. When the anode fitting 64 moves to a position where it does not come into contact with the energizing fitting 67 by the rotation of the gripping case 70 with respect to the main body case 11, the anode fitting 64 blocks the closed circuit formed by the electrical component group 60. On the other hand, when the gripping case 70 is rotated with respect to the main body case 11 and moved to a position where it comes into contact with the current-carrying metal fitting 67, the closed circuit formed by the electrical component group 60 is connected.

  The current-carrying metal fitting 67 has a straight part 67A fitted into the anode fitting part 31E and a bent part 67B subjected to a bending process. Moreover, it fixes with respect to the anode insertion part 31E by the heat crimping. The bent portion 67B is located in the opening portion of the inner case 30. The outer surface of the bent portion 67B has a curved shape. The curved outer surface of the bent portion 67 </ b> B suppresses the wear of the parts when contacting with the relative movement with the anode metal fitting 64.

  The operation of the cap coupling structure R will be described with reference to FIG. FIG. 22A shows a front structure in a state where the electric toothbrush 2 and the cap 80 are coupled to each other, and shows a front structure of a part of the portable oral hygiene device 1 in which the cap 80 is broken in the YZ plane. FIG. 22B is a back structure in a state where the electric toothbrush 2 and the cap 80 are coupled to each other, and shows a back structure of a part of the portable oral hygiene device 1 in which the cap 80 is broken in the YZ plane.

  The cap coupling structure R releases the coupling between the electric toothbrush 2 and the cap 80 when a force larger than the first separation force acts in the Z direction in a state where the electric toothbrush 2 and the cap 80 are coupled to each other. On the other hand, in the state where the electric toothbrush 2 and the cap 80 are separated from each other and the positional relationship between the outer side fitting portion RA of the outer case 20 and the cap side fitting portion RB of the cap 80 corresponds to each other, the Z direction When a force larger than the first coupling force is applied, the electric toothbrush 2 and the cap 80 are coupled to each other.

With reference to FIGS. 23 to 25, the operation of the first component coupling structure S will be described.
FIG. 23A shows a left side structure in a state where the toothbrush body 10 and the toothbrush attachment 50 are coupled to each other, and shows a left side structure of a part of the portable oral hygiene device 1 in which the toothbrush attachment 50 is broken in the XZ plane. . FIG. 23B is a back structure in a state where the toothbrush body 10 and the toothbrush attachment 50 are coupled to each other, and shows a back structure of a part of the portable oral hygiene device 1 in which the toothbrush attachment 50 is broken in the XZ plane.

  The first part coupling structure S releases the coupling between the toothbrush body 10 and the toothbrush attachment 50 when a force larger than the second separation force acts in the Z direction in a state where the toothbrush body 10 and the toothbrush attachment 50 are coupled to each other. . On the other hand, in a state where the toothbrush main body 10 and the toothbrush attachment 50 are separated from each other and the positional relationship between the outer side fitting portion SA of the outer case 20 and the first component side fitting portion SB of the toothbrush attachment 50 corresponds to each other. When a force larger than two coupling forces acts in the Z direction, the toothbrush body 10 and the toothbrush attachment 50 are coupled to each other.

  FIG. 24 shows a process in which the toothbrush body 10 and the toothbrush attachment 50 are coupled to each other by the first component coupling structure S with respect to the first component coupling structure S and the peripheral sectional structure thereof. Fig.25 (a) shows the cross-section of the main body case 11 and the toothbrush attachment 50 in the D24A-D24A plane of FIG.24 (c). FIG. 25B shows a cross-sectional structure of the main body case 11 and the toothbrush attachment 50 on the plane D24B-D24B in FIG.

  As shown in FIG. 24A, the toothbrush attachment 50 inserts the distal end portion of the upper coupling portion 21 into the opening portion 59 by moving in the downward direction ZB with respect to the upper coupling portion 21. At this time, the guide rib 54 enters the guide groove 21A.

  As shown in FIG. 24B, in the toothbrush attachment 50, the end surface of the opening portion 59 comes into contact with the outer side fitting portion SA of the upper coupling portion 21 by moving in the downward direction ZB with respect to the upper coupling portion 21.

  As shown in FIG. 24 (c), the back wall portion of the toothbrush attachment 50 has each upright wall portion in contact with the coupling-side contact surface SA2 when a force larger than the second coupling force acts in the downward direction ZB. Move on SA1. At this time, each upright wall portion SA1 applies a reaction force to the back wall portion. The reaction force acting on the back wall portion gives the user an operational feeling associated with the operation of coupling the toothbrush attachment 50. As shown in FIG. 25A, when the back wall portion moves on each upright wall portion SA1, the operation feeling imparting portion 57 moves on the intermediate recessed portion SA4.

  As shown in FIG. 24D, when the toothbrush attachment 50 is moved to a position where the entire first part-side fitting part SB moves to a position corresponding to the outer-side fitting part SA of the upper coupling part 21, the first part The side fitting part SB and the outer side fitting part SA are fitted together. For this reason, the toothbrush attachment 50 is coupled to the toothbrush body 10.

  As shown in FIG. 25B, each upright wall portion SA1 of the outer side fitting portion SA is in contact with the wall surface of the first component side fitting portion SB. The contact between each upright wall portion SA1 and the wall surface of the first component-side fitting portion SB regulates the rotation of the toothbrush attachment 50 with respect to the upper coupling portion 21. Further, when the outer side fitting portion SA and the first component side fitting portion SB are fitted together, the guide rib 54 is fitted into the guide groove 21 </ b> A of the upper coupling portion 21.

  With reference to FIG. 26, the detailed structure inside the electric toothbrush 2 will be described. FIG. 26A shows a state in which the brush stay 53 and the outer case 20 are broken in the YZ plane in the electric toothbrush 2. FIG. 26B shows a cross-sectional structure of the D26A-D26A plane of FIG. FIG. 26C shows a cross-sectional structure of the D26B-D26B plane of FIG. FIG. 26D shows a cross-sectional structure of the D26C-D26C plane of FIG.

  As shown in FIG. 26A, the working surface 121 of the stain care attachment 100 is inclined with respect to the inner surface of the toothbrush attachment 50. The toothbrush side seal member 26 is located below the stain care attachment 100 in the toothbrush attachment 50.

  The protruding portion 26 </ b> B of the toothbrush side seal member 26 is in close contact with the inner surface of the toothbrush attachment 50. The space in the toothbrush attachment 50 is partitioned into an upper space sealed by the toothbrush side seal member 26 and a space below the toothbrush side seal member 26.

  As shown in FIG. 26 (d), the front end coupling portion 24 of the outer case 20 has a ventilation groove 24F formed across the attachment groove 24B in the width direction (Z direction) of the attachment groove 24B. The ventilation groove 24F communicates the upper space and the lower space in the toothbrush attachment 50 defined by the toothbrush side seal member 26 with each other.

  As shown in FIGS. 26 (b) to 26 (d), the flat portion 132 of the second component side fitting portion VB of the stain care attachment 100 is opposite to the outer portion 24G of the outer side fitting portion VA (see FIG. 15). ). The flat surface portion 132 and the facing portion 24G restrict relative rotation between the stain care attachment 100 and the outer case 20.

With reference to FIG. 27, the detailed relationship of the main body coupling structure T will be described.
In the state where the outer case 20 and the inner case 30 are coupled to each other, the main body coupling structure T allows the outer case 20 and the inner case 30 to be coupled when a force larger than the third separation force acts in the Z direction of the electric toothbrush 2. To release. On the other hand, in the state where the outer case 20 and the inner case 30 are separated from each other and the positional relationship between the inner side fitting portion TA and the outer side fitting portion TB corresponds to each other, a force larger than the third coupling force is applied to the electric toothbrush. When acting in the Z direction, the outer case 20 and the inner case 30 are coupled to each other.

The details of the grip coupling structure U will be described with reference to FIGS.
FIG. 27A shows a left side structure of the toothbrush body 10 in a state where the gripping case 70 is broken in the XZ plane. FIG. 27B shows a right side structure of the toothbrush body 10 in a state where the gripping case 70 is broken in the XZ plane. FIG. 28A shows a front structure of the toothbrush body 10 in a state where the gripping case 70 is broken in the YZ plane. FIG. 28B shows the back structure of the toothbrush body 10 in a state where the gripping case 70 is broken in the YZ plane.

  In the state where the main body case 11 and the gripping case 70 are coupled to each other, the gripping and coupling structure U is configured such that when a force larger than the fourth separation force acts in the reverse direction around the central axis of the electric toothbrush 2, The connection of 70 is released. On the other hand, the main body case 11 and the gripping case 70 are separated from each other, the positional relationship between the gripping-side fitting portion UA and the outer-side fitting portion UB is in correspondence with each other, and the gripping-side fitting portion UC and the inner-side fitting In a state where the positional relationships of the portions UD correspond to each other, when the force larger than the fourth coupling force acts in the reverse direction around the central axis of the electric toothbrush 2, the main body case 11 and the gripping case 70 are coupled to each other.

  The grip coupling structure U permits relative rotation of the main body case 11 and the grip case 70 in a state where the main body case 11 and the grip case 70 are coupled to each other. The relative rotation states of the main body case 11 and the gripping case 70 are divided into three states: “separated state”, “off state”, and “on state”.

  In the following, in a plan view of the toothbrush body 10 shown in FIG. 6C, the counterclockwise rotation direction around the Z axis is referred to as “coupling direction”, and the clockwise rotation direction around the Z axis is referred to as “separation direction”. And

Details of the separation state will be described with reference to FIGS. 29 to 31.
FIG. 29A shows a cross-sectional structure of the D27A-D27A plane of FIG. 27 in a state where the main body case 11 and the gripping case 70 are separated. FIG. 29B shows a cross-sectional structure of the D27B-D27B plane of FIG. 27 when the main body case 11 and the gripping case 70 are separated.

  As shown in FIG. 29A, the grip-side fitting portion UA of the gripping case 70 has a movement range around the Z axis with respect to the outer case 20 when the operating force of the gripping case 70 is smaller than the fourth coupling force. It is regulated in the first rotation groove UB1. The first rotation groove UB1 corresponds to a range from the rotation restriction wall portion UB4 of the outer case 20 to the boundary rib UB3.

  The rotation restricting wall portion UB4 of the outer case 20 restricts the rotation of the gripping case 70 in the separating direction with respect to the outer case 20 when it is in contact with the gripping side fitting portion UA of the gripping case 70. The boundary rib UB <b> 3 of the outer case 20 restricts the rotation of the gripping case 70 in the connecting direction with respect to the outer case 20 when it is in contact with the gripping side fitting portion UA of the gripping case 70.

  As shown in FIG. 29 (b), the grip-side fitting portion UC of the gripping case 70 has a movement range around the Z axis with respect to the inner case 30 when the operating force of the gripping case 70 is smaller than the fourth coupling force. It is regulated by the inner side fitting portion UD of the inner case 30. When the inner side fitting portion UD of the inner case 30 is in contact with the holding side fitting portion UC of the holding case 70, the rotation of the holding case 70 in the direction of coupling to the inner case 30 is restricted.

  As shown in FIG. 27, the first rotation groove UB1 opens to the outer surface side of the inner case 30 in the downward direction ZB. For this reason, when the gripping case 70 moves in the downward direction ZB with respect to the main body case 11 in a state where the gripping side fitting portion UA of the gripping case 70 is positioned in the first rotation groove UB1, the gripping side fitting portion UA Detach to the inner outer surface 30Z side. On the other hand, when the gripping case 70 moves in the upward direction ZA with respect to the main body case 11 in a state of being located on the inner outer surface 30Z side corresponding to the first rotating groove UB1, it enters the first rotating groove UB1 from the inner outer surface 30Z side. To do.

  The gripping case 70 can move in the downward direction ZB with respect to the main body case 11 when the gripping side fitting portion UA is detached from the first rotation groove UB1. For this reason, the main body case 11 can be detached from the opening 73 of the gripping case 70 in the separated state.

The transition from the separated state to the off state will be described.
In the separated state, when an operation force in the coupling direction smaller than the fourth coupling force is input to the gripping case 70, the gripping case 70 rotates in the coupling direction with respect to the main body case 11. 29 (a) and 29 (b), the gripping side fitting portion UA of the gripping case 70 is in contact with the boundary rib UB3, and the gripping side fitting portion UC of the gripping case 70 is the inner side. It contacts the inner side fitting portion UD of the case 30.

  In the separated state of FIG. 29, when an operation force in the coupling direction larger than the fourth coupling force is input to the gripping case 70, the gripping side fitting portion UA of the gripping case 70 gets over the boundary rib UB3 in the coupling direction. And the holding side fitting part UC of the holding case 70 gets over the inner side fitting part UD of the inner case 30 in the coupling direction. Thereby, the relative rotation state of the main body case 11 and the gripping case 70 shifts to the off state.

  The fourth coupling force is the operating force in the coupling direction necessary for the gripping side fitting portion UA to get over the boundary rib UB3 in the coupling direction, and the gripping side fitting portion UC gets over the inner side fitting portion UD in the coupling direction. This corresponds to a combination of operating forces in the coupling direction necessary for the purpose.

  As shown in FIG. 28, the anode fitting 64 has a non-contact relationship with the energization fitting 67 in the separated state. The tip portion of the anode fitting 64 gradually approaches the energization fitting 67 as the gripping case 70 is rotated in the connecting direction with respect to the main body case 11. Further, even when the rotation state of the main body case 11 and the gripping case 70 shifts from the separated state to the off state, it has a non-contact relationship with the energizing metal fitting 67.

Details of the OFF state will be described with reference to FIG.
FIG. 30A shows a cross-sectional structure of the D27A-D27A plane of FIG. 27 when the main body case 11 and the gripping case 70 are in an off state. FIG. 30B shows a cross-sectional structure of the D27B-D27B plane of FIG. 27 when the main body case 11 and the gripping case 70 are in an off state.

  As shown in FIG. 30 (b), when the operating force of the gripping case 70 is smaller than the ON operating force, one gripping side fitting portion UA of the gripping case 70 rotates in the coupling direction with respect to the outer case 20. It is regulated by the inner side fitting portion UD of the inner case 30.

  As shown in FIG. 30B, the other gripping side fitting portion UA of the gripping case 70 rotates in the separation direction with respect to the outer case 20 when the operating force of the gripping case 70 is smaller than the fourth separation force. Is regulated by the inner side fitting portion UD of the inner case 30.

  As shown in FIG. 30 (a), the grip-side fitting portion UA of the gripping case 70 moves in the separating direction with respect to the inner case 30 when the operating force in the separating direction of the gripping case 70 is smaller than the fourth separating force. The rotation is restricted by the inner side fitting portion UD of the inner case 30.

  That is, the gripping case 70 does not rotate with respect to the main body case 11 when the operation force in the coupling direction is smaller than the on operation force and the operation force in the separation direction is smaller than the fourth separation force in the off state.

The transition from the off state to the on state will be described.
In the off state of FIG. 30, when an operation force in the coupling direction larger than the on operation force is input to the gripping case 70, one gripping side fitting portion UC of the gripping case 70 is fitted into the inner side fitting of the inner case 30. Get over the joint UD in the joining direction. Thereby, the relative rotation state of the main body case 11 and the gripping case 70 shifts to the on state.

  The on-operation force corresponds to an operation force in the coupling direction necessary for one grip-side fitting portion UC to get over the inner-side fitting portion UD in the coupling direction. That is, it is smaller than the fourth coupling force required to change the rotation state of the main body case 11 and the gripping case 70 from the separated state to the off state.

  As shown in FIG. 28, the anode fitting 64 has a non-contact relationship with the energization fitting 67 in the off state. The tip portion of the anode fitting 64 gradually approaches the energization fitting 67 as the gripping case 70 is rotated in the connecting direction with respect to the main body case 11. And when the rotation state of the main body case 11 and the gripping case 70 shifts from the off state to the on state, a closed circuit of the electrical component group 60 is formed in order to contact the energizing metal fitting 67 (see FIG. 21). For this reason, the electric motor 41 rotates. In addition, the rotation position of the anode fitting 64 with respect to the energization fitting 67 in the off state corresponds to the “first electrode position”. Further, the rotation position of the anode fitting 64 with respect to the energization fitting 67 in the ON state corresponds to the “second electrode position”.

The transition from the off state to the separated state will be described.
In the off state of FIG. 30, when an operating force in the separating direction larger than the fourth separating force is input to the gripping case 70, the gripping side fitting portion UA of the gripping case 70 gets over the boundary rib UB3 in the separating direction. In addition, one gripping side fitting portion UC of the gripping case 70 gets over the inner side fitting portion UD of the inner case 30 in the separation direction. Thereby, the relative rotation state of the main body case 11 and the gripping case 70 shifts to the separated state.

  The fourth separation force is the separation direction operating force required for the gripping side fitting portion UA to get over the boundary rib UB3 in the separation direction, and one gripping side fitting portion UC separates the inner side fitting portion UD. This is equivalent to the combined operating force in the separation direction required to get over. Moreover, it is larger than the fourth binding force.

  The main body case 11 and the gripping case 70 rotate relatively over the first predetermined rotation amount around the Z axis in the process of shifting from the separated state to the off state or in the process of shifting from the off state to the separated state. Further, in the process of shifting from the off state to the on state or in the process of shifting from the on state to the off state, the motor rotates relatively about the Z axis over a second predetermined rotation amount. The second predetermined rotation amount is smaller than the first predetermined rotation amount.

The details of the ON state will be described with reference to FIG.
FIG. 31A shows a cross-sectional structure of the D27A-D27A plane of FIG. FIG. 31B shows a cross-sectional structure of the D27B-D27B plane of FIG.

  As shown in FIG. 31A, the gripping side fitting portion UA of the gripping case 70 is restricted from rotating in the separation direction with respect to the outer case 20 by the rotation restricting wall portion UB5 of the outer case 20.

  As shown in FIG. 31 (b), when the operating force of the gripping case 70 is smaller than the OFF operating force, the gripping side fitting portion UC of the gripping case 70 is rotated in the separating direction with respect to the inner case 30. 30 is regulated by the inner side fitting portion UD.

  That is, the gripping case 70 does not rotate with respect to the main body case 11 when the operation force in the separation direction is smaller than the off operation force in the on state. The rotation restricting wall portion UB5 of the outer case 20 disables the rotation of the gripping side fitting portion UA in the coupling direction. For this reason, regardless of the magnitude of the operation force input to the gripping case 70, the gripping case 70 does not rotate in the coupling direction with respect to the main body case 11 in the on state.

The transition from the on state to the off state will be described.
In the ON state of FIG. 31, when an operating force in the separation direction larger than the OFF operating force is input to the gripping case 70, one gripping side fitting portion UC of the gripping case 70 is fitted to the inner side fitting of the inner case 30. Get over the joint UD in the separation direction. Thereby, the relative rotation state of the main body case 11 and the gripping case 70 shifts to the off state.

  The off-operation force corresponds to an operation force in the separation direction that is necessary for the grip-side fitting portion UC to get over the inner-side fitting portion UD in the separation direction. Moreover, it is larger than the ON operation force required to change the rotation state of the main body case 11 and the gripping case 70 from the OFF state to the ON state.

  The anode fitting 64 is in contact with the energization fitting 67 in the ON state. And when the rotation state of the main body case 11 and the gripping case 70 shifts from the on state to the off state, the closed circuit of the electrical component group 60 is shut off because it is separated from the energizing metal fitting 67 (see FIG. 21). For this reason, the rotation of the electric motor 41 is stopped.

  The shape of the anode fitting 64 will be described with reference to FIG. FIG. 32A shows a planar structure of the anode fitting 64. FIG. 32 (b) shows the left side structure of the anode fitting 64. FIG. 32C shows the front structure of the anode fitting 64.

  The anode fitting 64 includes an anode contact portion 64A that contacts the anode of the dry battery 3, two fitting contact portions 64B that contact the energizing fitting 67, and two fitting portions 64C that are fitted into the fixed portion 74 of the holding case 70. Have. The current-carrying metal fitting 67 (see FIG. 34) is in contact with one of the two metal fitting contact portions 64B.

  Each fitting portion 64 </ b> C has a hooking portion 64 </ b> D that is hooked on the inner surface of the gripping case 70. The tip portion of each hook portion 64D has a shape that narrows toward the tip. Each metal fitting contact portion 64B is inclined from the lower direction ZB toward the upper direction ZA from the connection portion with the fitting portion 64C toward the tip portion. The tip end portion of each metal fitting contact portion 64B is curved toward the energizing metal fitting 67 side.

  The anode contact portion 64A, each fitting portion 64C, each hooking portion 64D, and each metal fitting contact portion 64B are formed of a single continuous metal plate. The anode contact portion 64A is located in the upward direction ZA with respect to each fitting portion 64C and each hooking portion 64D. The tip end portion of each metal contact portion 64B is positioned in the upward direction ZA relative to the anode contact portion 64A when not in contact with the inner case 30 or the power supply metal 67 (see FIG. 34).

Details of the electrode structure of the gripping case 70 will be described with reference to FIGS. 33 to 35.
FIG. 33A shows the planar structure of the gripping case 70 with the anode fitting 64 removed. FIG. 33B shows a state in which the inner case 30 is omitted in the cross-sectional structure taken along the plane D27C-D27C in FIG. FIG. 33C shows a cross-sectional structure of the D27C-D27C plane of FIG.

  The fitting portion 64 </ b> C of the anode metal fitting 64 is fitted into the fixed portion 74 of the gripping case 70. Each catching portion 64 </ b> D is pressed against the inner surface of the gripping case 70. The fitting of the fixed portion 74 and the fitting portion 64 </ b> C and the contact between the inner surface of the gripping case 70 and the hooking portion 64 </ b> D regulate the rotation and movement of the anode fitting 64 with respect to the lower wall portion 72 of the gripping case 70. In the inner surface of the gripping case 70, the boundary portion from the inner surface of the outer peripheral wall portion 71 to the inner surface of the lower wall portion 72 and a portion in the vicinity thereof have a smoothly curved shape. Each hooking portion 64D is pressed against the curved portion.

  As shown in FIGS. 33 (b) and 34 (a), when the inner case 30 is not inserted into the holding case 70, the anode fitting 64 has the tip portion of each fitting contact portion 64B at the anode contact portion 64A. And it is located in the upper direction ZA than the restricting portion 75.

  As shown in FIG. 33 (c) and FIG. 34 (b), the wall portion of the opening portion 31A of the inner case 30 is brought into contact with the tip portion of each metal contact portion 64B, thereby lowering each metal contact portion 64B. Push down in direction ZB. The fitting contact portion 64B does not contact the bent portion 67B of the energizing fitting 67 when the rotation position of the gripping case 70 with respect to the main body case 11 is the off position.

  As shown in FIG. 35A, the gripping case 70 contacts the anode contact portion 64A and the anode of the dry cell 3 when the inner case 30 in which the dry cell 3 is inserted into the battery holding portion 31 is inserted. Let

  As shown in FIG. 35 (b), the restricting portion 75 of the lower wall portion 72 faces the dry battery 3 through a gap. The end surface of the opening portion 31 </ b> A of the inner case 30 is located in the lower direction ZB with respect to the anode plane 3 </ b> A of the dry battery 3. The bent portion 67B of the current-carrying metal fitting 67 is located in the downward direction ZB of the end surface of the opening portion 23A. Moreover, it is located outward from the inner surface of the opening portion 31A. That is, the bent portion 67 </ b> B is located at a place where it is difficult to contact the dry battery 3.

The operation of the electric toothbrush 2 will be described with reference to FIG.
When the user vibrates the brush head 52 when using the electric toothbrush 2, the user rotates the gripping case 70 in the coupling direction with respect to the main body case 11. That is, the relative rotation state of the main body case 11 and the gripping case 70 is changed from the off state to the on state. The anode metal fitting 64 contacts the energizing metal fitting 67 with the change from the off state to the on state. Thereby, the closed circuit which electrically connects the dry cell 3 and the electric motor 41 is formed.

  The electric motor 41 rotates the output shaft 42 and the eccentric weight 43 by the current supplied from the dry battery 3. Vibration generated by the rotation of the eccentric weight 43 is transmitted to the toothbrush attachment 50 through the main body case 11. For this reason, the brush head 52 and each bristle bundle 51 vibrate as the electric motor 41 rotates.

The portable oral hygiene device 1 of this embodiment has the following effects.
(1) The electric toothbrush 2 includes a toothbrush attachment 50 as a first functional component and a stain care attachment 100 as a second functional component. According to this configuration, two sanitary operations can be performed on the oral cavity with one electric toothbrush 2.

  (2) The stain care attachment 100 is coupled to the distal end coupling portion 24 of the main body case 11. For this reason, compared with the structure which cannot couple | bond the stain care attachment 100 with the front-end | tip coupling | bond part 24, management of the attachment 100 becomes easy.

  (3) The electric toothbrush 2 has a toothbrush side seal member 26 as an intrusion restricting structure. According to this configuration, entry of foreign matter into the space in which the stain care attachment 100 is accommodated in the toothbrush attachment 50 is suppressed. For this reason, the stain care attachment 100 is kept clean.

  (4) The electric toothbrush 2 includes a toothbrush side seal member 26 formed of an elastic material. According to this structure, the effect which suppresses the penetration | invasion of the foreign material to the space in which the stain care attachment 100 is accommodated becomes high.

  (5) The toothbrush side seal member 26 includes an annular portion 26A that is fitted into the mounting groove 24B, and a protruding portion 26B that protrudes from the annular portion 26A. The thickness of the protruding portion 26B is smaller than the thickness of the annular portion 26A. According to this configuration, the resistance acting on the toothbrush attachment 50 when the toothbrush attachment 50 and the outer case 20 are separated or coupled as compared with the configuration in which the thickness of the protruding portion 26B is larger than the thickness of the annular portion 26A. Get smaller. Further, when the toothbrush attachment 50 and the outer case 20 are separated or coupled, the protruding portion 26B is likely to be deformed according to a pressure change in the toothbrush attachment 50. For this reason, the toothbrush attachment 50 can be easily separated or combined with the outer case 20.

  (6) The toothbrush side seal member 26 is attached to the tip coupling portion 24 of the outer case 20. That is, the outer case 20 as a durable has the toothbrush side seal member 26. According to this configuration, the cost of these consumables is lower than the virtual configuration in which the toothbrush attachment 50 and the stain care attachment 100 as consumables have the toothbrush side seal member 26.

  (7) The toothbrush side seal member 26 is fitted into the mounting groove 24 </ b> B of the outer case 20. According to this configuration, even when the position of the toothbrush attachment 50 with respect to the outer case 20 is deviated from the normal position, the state in which the protruding portion 26B is in contact with the inner surface of the toothbrush attachment 50 is easily maintained. For this reason, the effect which suppresses the penetration | invasion of the foreign material to the space in which the stain care attachment 100 is accommodated is acquired stably.

  (8) The annular portion 26 </ b> A of the toothbrush side seal member 26 is fitted into the mounting groove 24 </ b> B of the tip coupling portion 24. The protruding portion 26 </ b> B of the toothbrush side seal member 26 is in close contact with the inner surface of the toothbrush attachment 50. According to this configuration, rattling of the outer case 20 and the toothbrush attachment 50 is unlikely to occur. For this reason, generation | occurrence | production of the sound resulting from rattling is suppressed.

  (9) The toothbrush side seal member 26 is attached to the distal end coupling portion 24 as a portion accommodated in the toothbrush attachment 50 in the outer case 20. According to this structure, compared with the virtual structure which has the toothbrush side seal member 26 outside the toothbrush attachment 50, the physique of the toothbrush main body 10 can be made small.

  (10) The outer case 20 has a ventilation groove 24F formed across the attachment groove 24B in the width direction. According to this configuration, when the toothbrush attachment 50 and the outer case 20 are separated or joined, the air moves in the toothbrush attachment 50 between the space above and below the toothbrush side seal member 26. For this reason, when the toothbrush attachment 50 is couple | bonded with the outer case 20, it is suppressed that the pressure in the toothbrush attachment 50 becomes high too much. Further, when the toothbrush attachment 50 is separated from the outer case 20, a large negative pressure is suppressed from being generated in the toothbrush attachment 50. For this reason, the toothbrush attachment 50 can be easily separated or combined with the outer case 20.

  (11) The ventilation groove 24F has a portion that passes over the side surface of the mounting groove 24B and a portion that passes through the bottom surface of the mounting groove 24B. That is, it has a shape bent according to the shape of the mounting groove 24B. According to this configuration, the shape of the ventilation groove 24 </ b> F prevents foreign matter from moving to a space above the toothbrush side seal member 26 through the ventilation groove in the space in the toothbrush attachment 50. For this reason, in the structure which adjusts the internal pressure of the toothbrush attachment 50 by the ventilation groove 24F, it is suppressed that a foreign material permeates into the space in which the stain care attachment 100 is accommodated.

  (12) The toothbrush main body 10 and the stain care attachment 100 have a second part coupling structure V that can be coupled and separated from each other. According to this configuration, the stain care attachment 100 can be cleaned while being separated from the toothbrush body 10. That is, it becomes possible to provide the user with excellent cleaning properties. In addition, the two parts of the toothbrush attachment 50 and the stain care attachment 100 that are consumables can be replaced at the same time. That is, it becomes possible to provide the user with higher maintainability in terms of hygiene.

  (13) The second part coupling structure V couples and separates the outer case 20 and the stain care attachment 100 from each other by fitting the outer side fitting portion VA of the outer case 20 and the insertion portion 130 of the stain care attachment 100. According to this structure, the structure which accommodates the stain care attachment 100 in the narrow space in the toothbrush attachment 50 can be formed easily.

  (14) The second component coupling structure V couples and separates the outer case 20 and the stain care attachment 100 from each other by relative movement between the outer case 20 and the stain care attachment 100 in the longitudinal direction. According to this configuration, the stain care attachment 100 can be coupled to and separated from the outer case 20 by applying a force in the Z direction to the stain care attachment 100. For this reason, compared with the electric toothbrush which has the virtual component coupling | bonding structure which requires the operation | movement which rotates a stain care attachment when couple | bonding and separating the stain care attachment 100 with respect to the outer case 20, the stain care attachment 100 is made. Can be easily combined and separated. Moreover, the cost of the electric toothbrush 2 including the structure for coupling and separating the outer case 20 and the stain care attachment 100 from each other is reduced. In addition, since the stain care attachment 100 is less likely to be acted on in the longitudinal direction during use, there is little risk of displacement relative to the outer case 20 during use.

  (15) The tip coupling portion 24 of the outer case 20 has a facing portion 24G in which the vertical ribs 24H are formed. The stain care attachment 100 includes a flat portion 132 that contacts the facing portion 24G. That is, the second component coupling structure V has a structure that restricts relative rotation between the outer case 20 and the stain care attachment 100. According to this configuration, the stain care attachment 100 is suppressed from rotating with respect to the outer case 20 during use. For this reason, the force applied to the teeth from the stain care attachment 100 due to the rotation of the stain care attachment 100 with respect to the outer case 20 during use is suppressed. Moreover, it is suppressed that the cleaning property of a tooth falls resulting from the rotation position of the stain care attachment 100 changing.

  (16) The cleaning portion 120 of the stain care attachment 100 has a portion protruding outward from the outer surface of the insertion portion 130 in the width direction. According to this configuration, when the stain care attachment 100 is separated from the outer case 20, it is possible to place a finger on a portion protruding outside the cleaning portion 120. For this reason, the stain care attachment 100 can be easily separated from the outer case 20.

  (17) The cleaning portion 120 of the stain care attachment 100 has the working surface 121 that is inclined from the rear direction XB toward the front direction XA as it goes from the upper direction ZA to the lower direction ZB. According to this configuration, the working surface 121 is unlikely to contact the inner surface of the toothbrush attachment 50. Moreover, compared with the structure which has a plane orthogonal to the longitudinal direction of the stain care attachment 100 as an action surface, the area of the action surface 121 becomes large. Moreover, since the front-end | tip part of the upward direction ZA of the cleaning part 120 has an acute angle, the cleaning property between teeth becomes high.

  (18) The stain care attachment 100 includes an attachment main body 110 formed of an elastic material, and a core member 140 inserted into the attachment main body 110. The core member 140 has higher rigidity than the attachment main body 110. According to this configuration, the rigidity of the cleaning portion 120 with respect to the force acting on the side surface of the stain care attachment 100 is increased. For this reason, it becomes difficult for the stain care attachment 100 to come off from the outer case 20 during use. Further, since the insertion portion 130 is pressed against the inner surface of the distal end coupling portion 24 by the core member 140, the effect that the stain care attachment 100 is less likely to be detached from the outer case 20 is further enhanced.

  (19) The cleaning portion 120 of the stain care attachment 100 has a support surface 122 that contacts the tip support portion 24A of the tip coupling portion 24. According to this configuration, the movement of the stain care attachment 100 relative to the distal end coupling portion 24 is restricted by the contact between the support surface 122 and the distal end support portion 24A. Moreover, the transmission efficiency of the vibration from the outer case 20 to the stain care attachment 100 becomes high.

  (20) The second component coupling structure V includes an outer side fitting portion VA as a concave portion formed in the outer case 20 and an insertion portion 130 as a convex portion formed in the stain care attachment 100. According to this configuration, the outer case 20 is less likely to be damaged than the virtual configuration in which the convex portion as the second component coupling structure V is formed on the outer case 20.

  (21) The main body case 11 and the gripping case 70 of the electric toothbrush 2 have a gripping and coupling structure U that enables relative movement between the main body case 11 and the gripping case 70. The grip coupling structure U has a function as a switch of the electric motor 41. According to this configuration, the switch part of the electric motor 41 can be omitted. For this reason, it contributes to size reduction of the electric toothbrush 2.

  (22) The toothbrush body 10 of the electric toothbrush 2 does not have the switch part of the electric motor 41 in the intermediate coupling portion 22 of the outer case 20. According to this configuration, the length of the electric toothbrush 2 in the longitudinal direction is smaller than that in the configuration in which the intermediate coupling portion 22 of the outer case 20 has the switch part.

  (23) The grip coupling structure U has a structure that allows relative rotation between the main body case 11 and the grip case 70. According to this configuration, the length of the electric toothbrush 2 in the longitudinal direction does not change when the gripping case 70 is operated to select ON / OFF of the switch of the electric motor 41. For this reason, the user can feel downsizing even while using the electric toothbrush 2.

  (24) The grip coupling structure U is a structure that allows relative rotation between the main body case 11 and the grip case 70, the upper grip coupling structure UX that functions as a switch of the electric motor 41, and the main body case 11 and the grip case 70. And a lower grip coupling structure UY that couples and separates each other. According to this configuration, since the two functions are given to the relative rotation of the main body case 11 and the gripping case 70, compared with the configuration that gives the above functions for each of the different movements, This contributes to the miniaturization of the electric toothbrush 2.

  (25) The on-operation force and the off-operation force for changing the power on and off of the electric motor 41 in the upper grip coupling structure UX are for separating the main body case 11 and the grip case 70 in the lower grip coupling structure UY. Less than the fourth separation force. According to this configuration, the gripping case 70 is less likely to be separated from the main body case 11 in accordance with an operation for changing the power on and off of the electric motor 41.

  (26) The upper grip coupling structure UX has a reverse direction as a rotation direction for separating the grip case 70 from the main body case 11. The lower gripping coupling structure UY has a normal rotation direction as a rotation direction for changing the power source of the electric motor 41 from OFF to ON. According to this configuration, the gripping case 70 is prevented from being separated from the main body case 11 due to the operation for changing the power source of the electric motor 41 from OFF to ON.

  (27) The upper grip coupling structure UX has a second predetermined operation amount as an operation amount for changing on and off of the electric power of the electric motor 41. The lower grip coupling structure UY has a first predetermined operation amount as an operation amount for changing the coupling and separation of the main body case 11 and the grip case 70. The second predetermined operation amount is smaller than the first predetermined operation amount. According to this configuration, the gripping case 70 is less likely to be separated from the main body case 11 with the operation for turning on and off the electric motor 41.

  (28) The main body case 11 and the toothbrush attachment 50 have a first part coupling structure S that allows the main body case 11 and the toothbrush attachment 50 to be coupled to and separated from each other. The first component coupling structure S couples or separates the main body case 11 and the toothbrush attachment 50 by relative movement of the main body case 11 and the toothbrush attachment 50 in the longitudinal direction. According to this configuration, the functional component is moved in the Z direction with respect to the main body case, a part of the main body case is entered into the functional component, and then the functional component and the main body case are rotated by rotating the functional component into the main body case. The main body case 11 and the toothbrush attachment 50 can be easily coupled as compared with the coupling structure coupled to each other. An example of the coupling structure described here as a comparative example is a rotary coupling structure 55 for coupling and separating another structural case and the toothbrush attachment 50 from each other.

  (29) The anode fitting 64 is fixed to the lower side wall portion 72 of the gripping case 70. According to this configuration, the position of the anode fitting 64 relative to the energizing fitting 67 can be changed with the rotation of the gripping case 70 relative to the main body case 11.

  (30) The main body case 11 has a current-carrying metal fitting 67 connected to the anode of the dry battery 3. The anode fitting 64 has a first electrode position that does not contact the current-carrying metal fitting 67 and a second electrode position that contacts the current-carrying metal fitting 67. The gripping and coupling structure U changes the first electrode position and the second electrode position of the anode fitting 64 by relative rotation between the main body case 11 and the gripping case 70. According to this configuration, since the power source of the electric motor 41 is selected to be turned off and on by the operation of the gripping case 70 gripped during brushing, the user can intuitively operate the power source of the electric motor 41.

  (31) The gripping case 70 has a restricting portion 75 that restricts the anode contact portion 64A and the cathode of the dry battery 3 from contacting each other. The restricting portion 75 is formed of a nonconductive material. The distal end portion of the restricting portion 75 is located closer to the battery holding portion 31 than the anode contact portion 64 </ b> A in the longitudinal direction of the gripping case 70. According to this configuration, when the cathode of the dry battery 3 is accommodated in the battery holding portion 31 in a state of facing the anode metal fitting 64, the cathode of the dry battery 3 comes into contact with the regulating portion 75 and through the gap between the anode contact portion 64A and the anode contact portion 64A. opposite. That is, the cathode of the dry battery 3 does not contact the anode contact portion 64A. For this reason, generation | occurrence | production of a short circuit is suppressed.

  (32) Since the electric toothbrush 2 has a portable structure, the physique is smaller than a stationary electric toothbrush. For this reason, it is difficult for a user who is familiar with a stationary electric toothbrush to grip the gripping case during brushing because the area of the electric toothbrush 2 in contact with the hand is smaller than that of the stationary electric toothbrush. There is a risk of feeling. On the other hand, the electric toothbrush 2 has a decorative ring 12 protruding outward from the gripping outer surface 70Z. The decorative ring 12 prevents the gripping case 70 from slipping with respect to the user's hand by being caught by the user's hand. For this reason, a user who has been able to use a stationary electric toothbrush can reduce the above-mentioned uncomfortable feeling by holding the gripping case 70 with the decorative ring 12 as a non-slip.

  (33) The gripping case of the electric toothbrush of Patent Document 1 has a smooth curved outer surface to enhance aesthetics. For this reason, there is a possibility that the gripping case slips with respect to the user's hand during brushing. On the other hand, since the electric toothbrush 2 has the decorative ring 12, the operability when used as the electric toothbrush of Patent Document 1 is improved.

  (34) The energizing metal fitting 67 is fixed to the outer surface of the battery holding portion 31 of the inner case 30. According to this configuration, the possibility that the current-carrying metal fitting 67 contacts the cathode metal fitting 63 is small. Further, as compared with the configuration in which the current-carrying metal fitting 67 is fixed to the inner surface of the battery holding portion 31, the work for the current-carrying metal fitting 67 to the battery holding portion 31 is facilitated.

  (35) The battery holding portion 31 has a cutout portion 31 </ b> C for inserting and removing the dry battery 3. According to this structure, when taking out the dry cell 3 from the battery holding part 31, it becomes possible to grasp the outer peripheral surface of the dry cell 3 exposed in the notch part 31C. For this reason, the operation | work which takes out the dry cell 3 from the battery holding part 31 becomes easy.

  (36) The battery holding portion 31 includes a sandwiching portion 31B that is inclined from the outside to the inside. According to this configuration, when the dry battery 3 is inserted into the battery holding portion 31, the dry battery 3 pushes the holding portions 31B outward, so that the restoring force of each holding portion 31B causes the dry battery 3 to move against the battery holding portion 31. The position is difficult to change.

  (37) The main body case 11 has a circuit board 61 connected to the cathode fitting 63 and the anode fitting 64. The circuit board 61 has a current fuse 62. According to this configuration, an energization path from the dry battery 3 to the electric motor 41 can be easily formed. Further, when a short circuit occurs in the dry battery 3, it is possible to suppress a large current from flowing through the dry battery 3.

  (38) The current-carrying metal fitting 67 has a straight portion 67A and a bent portion 67B. According to this configuration, when the bent portion 67B comes into contact with the current-carrying metal fitting 67 with the rotation of the gripping case 70 with respect to the main body case 11, the current-carrying metal fitting 67 is compared with the configuration in which the edge portion of the metal fitting comes into contact with the current-carrying metal fitting 67. The anode metal fitting 64 is hard to be scraped when it comes into contact.

  (39) The main body case 11 has the grip-side seal member 25 in the upward direction ZA with respect to the joint portion between the outer case 20 and the inner case 30. That is, the grip-side seal member 25 seals the gap between the main body case 11 and the gripping case 70 by contacting the gripping inner surface 70 </ b> W near the opening 73 of the gripping case 70. According to this configuration, entry of foreign matter into the main body case 11 is suppressed. Moreover, since the effect which suppresses a foreign material approach is acquired by the one holding | grip side sealing member 25, compared with the structure which show | plays the same effect with a some elastic member, the physique of the toothbrush main body 10 can be made small.

  (40) The main body coupling structure T includes an inner side fitting portion TA of the inner case 30 and an outer side fitting portion TB of the outer case 20. The inner side fitting portion TA is connected to the base portion 31F of the inner case 30 by three support portions 31G. According to this configuration, the strength of the inner side fitting portion TA is higher than the configuration in which the inner side fitting portion TA is not connected to the base portion 31F by the support portion 31G.

  (41) The first part coupling structure S includes an outer side fitting part SA of the upper coupling part 21 and a first part side fitting part SB of the toothbrush attachment 50. The outer side fitting portion SA has a structure that restricts rotation of the toothbrush attachment 50 with respect to the upper coupling portion 21. According to this configuration, in a state where the toothbrush attachment 50 is attached to the upper coupling portion 21, the toothbrush attachment 50 is suppressed from rotating with respect to the upper coupling portion 21.

  (42) The upright wall portion SA1 of the outer fitting portion SA has a function of imparting an operational feeling to the toothbrush attachment 50 and a function of regulating the rotation of the toothbrush attachment 50. According to this configuration, the first component coupling structure S can be reduced in size compared to a configuration in which these two functions are provided to individual components.

(Second Embodiment)
The portable oral hygiene device 1 of this embodiment shown in FIG. 36 has the following differences as main differences from the portable oral hygiene device 1 of the first embodiment shown in FIG. That is, the electric toothbrush 2 of the portable oral hygiene device 1 of the first embodiment has the stain care attachment 100 as the second functional component. On the other hand, the electric toothbrush 2 of the portable oral hygiene device 1 of the present embodiment has an interdental brush attachment 200 as a second functional component. Below, the detail of a different point from the electric toothbrush 2 of 1st Embodiment is demonstrated, about the structure which is common in 1st Embodiment, the same code | symbol is attached | subjected and the part or all of the description is abbreviate | omitted.

  FIG. 36A shows the electric toothbrush 2 in a state where the toothbrush attachment 50 is broken in the XZ plane in FIG. The toothbrush body 10 has an interdental brush attachment 200. The interdental brush attachment 200 is coupled to the tip coupling portion 24 of the outer case 20. Moreover, it is located in the space in the toothbrush attachment 50.

  FIG. 36B shows the electric toothbrush 2 in a state where the toothbrush attachment 50 in FIG. 36A is omitted and the interdental brush attachment 200 is separated from the distal end coupling portion 24. The configuration of the tip coupling portion 24 is the same as the configuration of the tip coupling portion 24 of the first embodiment.

  With reference to FIG. 37, the structure of the interdental brush attachment 200 is demonstrated. FIG. 37A shows the left side structure of the interdental brush attachment 200. FIG. 37B shows the front structure of the interdental brush attachment 200. FIG. 37 (c) shows the back structure of the interdental brush attachment 200. FIG. 37 (d) shows a planar structure of the interdental brush attachment 200. FIG. 37 (e) shows the bottom structure of the interdental brush attachment 200.

  As shown in FIG. 37A to FIG. 37C, the interdental brush attachment 200 includes a cleaning portion 210 that is inserted into the oral cavity and an insertion portion 220 that supports the cleaning portion 210. The cleaning portion 210 has a structure in which another resin material is molded on the surface of the base resin material. The cleaning portion 210 and the insertion portion 220 are molded as an integral member from a base resin material. Polypropylene resin is used as the base resin material of the interdental brush attachment 200. As another resin material molded on the surface of the cleaning portion 210, an elastomer is used. The insertion portion 220 corresponds to the second component side fitting portion VB (see FIG. 9) of the second component coupling structure V.

  As shown in FIGS. 37A to 37C, the cleaning portion 210 includes a plurality of protrusions 212 that remove dirt between teeth, a column 211 that supports the plurality of protrusions 212, and a tip coupling portion 24. And a base portion 213 that contacts the tip support portion 24A (see FIG. 38). The base portion 213 has a portion subjected to R processing around the bottom surface.

  As shown in FIGS. 37A and 37B, the insertion portion 220 faces the front contact portion 221 that faces the front inner surface of the tip coupling portion 24 and the rear inner surface of the tip coupling portion 24. And a rear contact portion 222. In addition, an upper connection portion 223 that connects the upper portion of the rear contact portion 222 and the bottom surface of the base portion 213 to each other, and a lower connection portion 224 that connects the lower portion of the rear contact portion 222 and the lower portion of the front contact portion 221 to each other. And have. In addition, an intermediate opening portion 227 that allows deformation of the rear contact portion 222 in the front direction XA is provided.

  The outer surface of the upper connection portion 223 is located in the rear direction XB with respect to the outer surface of the rear contact portion 222 in the X direction. The outer surface of the lower connection portion 224 is located in the rear direction XB with respect to the outer surface of the rear contact portion 222 in the X direction. The distance between the outer surface of the upper connection portion 223 and the outer surface of the rear contact portion 222 in the X direction, and the distance between the outer surface of the lower connection portion 224 and the outer surface of the rear contact portion 222 are the upper connection portion 223 and the lower connection portion 224. Is sufficiently small with respect to the dimension in the X direction. Therefore, FIGS. 37 (a), 38 (c), and 39 (a) to 39 (c) show the outer surface of the rear contact portion 222, the outer surface of the upper connection portion 223, and the outer surface of the lower connection portion 224. These external surfaces are shown in the same position in the X direction.

  As shown in FIG. 37A, the front contact portion 221 has a restriction convex portion 226 that restricts deformation of the rear contact portion 222. The rear contact portion 222 has a rear fitting convex portion 225 that is fitted into the rear window portion 24D (see FIG. 38) of the tip coupling portion 24.

  As shown in FIG. 37C, in the rear view of the interdental brush attachment 200, the dimension of the upper connection portion 223 in the Y direction is larger than the dimension of the rear contact portion 222 in the Y direction. Further, the dimension in the Y direction of the lower connection portion 224 is larger than the dimension in the Y direction of the rear contact portion 222.

  The details of the second component coupling structure V will be described with reference to FIG. FIG. 38A shows the left side structure of the interdental brush attachment 200 and the outer case 20. FIG. 38B shows the back structure of the interdental brush attachment 200 and the outer case 20. FIG. 38C shows a cross-sectional structure in a state where the outer case 20 is broken on the plane D38B-D38B in FIG. FIG. 38D shows a cross-sectional structure in a state where the outer case 20 is broken on the plane D38A-D38A of FIG. In FIG. 38, the central axis of each component is omitted.

  The upper coupling portion 21, the tip coupling portion 24 of the outer case 20, the support column 211 of the interdental brush attachment 200, and the insertion portion 220 each have a central axis that is orthogonal to the XY plane.

  As shown in FIGS. 38A and 38C, in the XZ plane of the electric toothbrush 2, the central axis of the upper coupling portion 21, the central axis of the tip coupling portion 24, the central axis of the support column 211, and the insertion portion The central axes of 220 are parallel to each other. The central axis of the tip coupling portion 24, the central axis of the support column 211, and the central axis of the insertion portion 220 are located in the rear direction XB with respect to the central axis of the upper coupling portion 21. The central axis of the column 211 is located in the rear direction XB with respect to the central axis of the distal end coupling portion 24 and the central axis of the insertion portion 220. The tip coupling portion 24 and the insertion portion 220 are coaxial.

  As shown in FIGS. 38B and 38C, the entire insertion portion 220 is inserted into the outer side fitting portion VA of the tip coupling portion 24. The bottom surface of the base portion 213 contacts the tip support portion 24 </ b> A of the tip coupling portion 24.

  As shown in FIG. 38 (c), the outer surface of the front contact portion 221 contacts the inner surface of the tip coupling portion 24. The upper inclined surface 225A of the rear fitting convex portion 225 is opposed to the upper-side ZA side portion of the opening surface 24E of the rear window portion 24D via a gap. The lower inclined surface 225B of the rear fitting convex portion 225 faces the lower ZB side portion of the opening surface 24E of the rear window portion 24D via a gap. The front side portion of the outer surface of the front contact portion 221 is exposed to the outside of the tip coupling portion 24 via the front window portion 24C. The back side portion of the outer surface of the rear fitting convex portion 225 is exposed to the outside of the tip coupling portion 24 through the rear window portion 24D.

  As shown in FIGS. 38 (b) and 38 (d), in the back view of the toothbrush body 10, the end of the base portion 213 in the right direction YA is inward of the end of the tip support portion 24A in the right direction YA. Located on the side. Further, the left end YB end of the base portion 213 is located on the inner side of the left end YB end of the tip support portion 24A.

  As shown in FIGS. 38 (a) and 38 (c), in the side view of the toothbrush body 10, the end in the front direction XA of the base portion 213 is more inward than the end in the front direction XA of the tip support portion 24A. Located on the side. Further, the end in the rear direction XB of the base portion 213 and the end in the front direction XA of the tip support portion 24A are located at substantially the same place in the X direction.

With reference to FIG. 39, the coupling | bonding procedure of the interdental brush attachment 200 is demonstrated.
As shown in FIG. 39A, the insertion portion 220 of the interdental brush attachment 200 moves the outer side fitting portion VA by moving in the downward direction ZB with respect to the distal end coupling portion 24. The front contact portion 221 and the rear contact portion 222 move in the downward direction ZB with respect to the outer side fitting portion VA while being in contact with the inner surface of the outer side fitting portion VA. The lower inclined surface 225B of the rear fitting convex portion 225 of the insertion portion 220 comes into contact with the distal end support portion 24A of the distal end coupling portion 24 when the amount of movement of the insertion portion 220 relative to the distal end coupling portion 24 reaches a predetermined amount.

  As shown in FIG. 39 (b), the rear fitting convex portion 225 has an outer fitting portion VA and a force larger than the additional fitting force in the state of FIG. 39 (a). It rides on the inner surface of the outer fitting portion VA by contact with the lower inclined surface 225B. At this time, the rear contact portion 222 is deformed toward the intermediate opening portion 227 by a reaction force applied from the outer side fitting portion VA.

  As shown in FIG. 39 (c), the rear fitting convex portion 225 moves further in the downward direction ZB with respect to the outer side fitting portion VA by the force acting in the downward direction ZB in the state of FIG. 39 (b). When it does, it moves from the inner surface of the outer side fitting part VA to the space of the rear window part 24D of the front end coupling part 24.

  FIG. 39D shows an enlarged structure of the rear fitting convex portion 225 and its periphery in the state of FIG. The upper inclined surface 225A of the rear fitting convex portion 225 is inclined from the lower direction ZB toward the upper direction ZA as it goes from the front direction XA to the rear direction XB with respect to the opening surface 24E of the opposed rear window portion 24D. The lower inclined surface 225B of the rear fitting convex portion 225 is inclined from the lower direction ZB toward the upper direction ZA as it goes from the front direction XA to the rear direction XB with respect to the opening surface 24E of the opposed rear window portion 24D. . The inclination angle of the lower inclined surface 225B with respect to the X direction is larger than the inclination angle of the upper inclined surface 225A with respect to the X direction.

  The front contact portion 221, the upper connection portion 223, and the lower connection portion 224 are fitted on the outer side by contact with the inner surface of the outer side fitting portion VA in the state shown in FIGS. 39 (c) and 39 (d). The reaction force is received from the part VA. That is, the second component coupling structure V couples the insertion portion 220 and the tip coupling portion 24 to each other by fitting the front contact portion 221, the upper connection portion 223, and the lower connection portion 224 with the outer side fitting portion VA. Further, the coupling force between the insertion portion 220 and the outer side fitting portion VA is enhanced by the fitting between the rear fitting convex portion 225 and the rear window portion 24D.

The portable oral hygiene device 1 of the present embodiment has the following effects in addition to the effects according to the effects (1) to (42) exhibited by the portable oral hygiene device 1 of the first embodiment.
(43) The upper inclined surface 225A of the rear fitting convex portion 225 is inclined from the lower direction ZB toward the upper direction ZA as it goes from the front direction XA to the rear direction XB with respect to the opening surface 24E of the rear window portion 24D. . For this reason, compared with a virtual configuration in which the upper inclined surface 225A is inclined in the opposite direction, the rear contact portion 222 is less likely to be deformed inward when the rear fitting convex portion 225 contacts the rear window portion 24D. For this reason, the insertion portion 220 is unlikely to be detached from the tip coupling portion 24. Note that the upper inclined surface 225A having the virtual configuration is inclined from the upper direction ZA to the lower direction ZB as it goes from the front direction XA to the rear direction XB.

  (44) The second component coupling structure V is a structure in which the rear window portion 24D formed in the tip coupling portion 24 and the rear fitting convex portion 225 formed in the interdental brush attachment 200 can be fitted to each other. Have According to this structure, the force which couple | bonds the outer case 20 and the interdental brush attachment 200 mutually becomes still higher.

  (45) The rear window portion 24D has a through hole into which the rear fitting convex portion 225 is fitted. According to this configuration, a structure for fitting the rear fitting convex portion 225 can be easily formed. Further, as a procedure for separating the interdental brush attachment 200 from the outer case 20, a procedure using the removal tool 400 can be adopted. For this reason, compared with the structure which can isolate | separate the interdental brush attachment 200, without using the removal tool 400, a possibility that the interdental brush attachment 200 may separate from the outer case 20 carelessly becomes small.

(Third embodiment)
The portable oral hygiene device 1 of this embodiment shown in FIG. 40 has the following differences as main differences from the portable oral hygiene device 1 of the first embodiment shown in FIG. That is, the electric toothbrush 2 of the portable oral hygiene device 1 of the first embodiment has the stain care attachment 100 as the second functional component. On the other hand, the electric toothbrush 2 of the portable oral hygiene device 1 of the present embodiment has an interdental brush attachment 300 as a second functional component. Below, the detail of a different point from the electric toothbrush 2 of 1st Embodiment is demonstrated, about the structure which is common in 1st Embodiment, the same code | symbol is attached | subjected and the part or all of the description is abbreviate | omitted.

  FIG. 40 (a) shows the portable oral hygiene device 1 in a state where the toothbrush attachment 50 is broken in the XZ plane in FIG. 2 (a). The toothbrush body 10 has an interdental brush attachment 300. The interdental brush attachment 300 is coupled to the tip coupling portion 24 of the outer case 20. Moreover, it is located in the space in the toothbrush attachment 50.

  FIG. 40B shows the portable oral hygiene device 1 in a state where the toothbrush attachment 50 is omitted in FIG. 40A and the interdental brush attachment 300 is separated from the distal end coupling portion 24. The configuration of the tip coupling portion 24 is the same as the configuration of the tip coupling portion 24 of the first embodiment.

  The configuration of the interdental brush attachment 300 will be described with reference to FIGS. FIG. 41 shows the interdental brush attachment 300 with the second fixed component 340 removed. FIG. 42 shows the second fixed component 340 of the interdental brush attachment 300. 43 and 44 show an interdental brush attachment 300. FIG.

  As shown in FIGS. 43A to 43C, the interdental brush attachment 300 includes a cleaning component 310 that is inserted into the oral cavity and a fixing component 320 that supports the cleaning component 310. The cleaning component 310 and the fixed component 320 are configured as individual components using a resin material. The cleaning component 310 includes a plurality of bristles 312 for polishing teeth and a wire shaft 311 that supports the plurality of bristles 312.

  As shown in FIG. 43 (c), the fixing component 320 includes a first fixing component 330 into which the cleaning component 310 is inserted and a second fixing component 340 to be inserted into the first fixing component 330. The first fixed component 330 and the second fixed component 340 are configured as individual components using the same resin material.

  As the resin material for the cleaning component 310 and the first fixing component 330, it is preferable to use a material that gives a soft contact feeling to the tissue in the oral cavity. Here, polypropylene resin is used as a resin material for the cleaning component 310 and the first fixed component 330. As the resin material of the second fixed component 340, it is preferable to use a material having high strength in order to maintain the function as a hook. Here, polyacetal resin is used as the resin material of the second fixed component 340.

  With reference to FIG. 41, the structure of the 1st fixing | fixed component 330 is demonstrated. FIG. 41 (a) shows the left side structure of the first fixed component 330 with the cleaning component 310. FIG. 41B shows a front structure of the first fixed component 330 with the cleaning component 310. FIG. 41 (c) shows the back structure of the first fixed part 330 with the cleaning part 310. FIG. 41 (d) shows a planar structure of the first fixed part 330 with the cleaning part 310. FIG. 41 (e) shows the bottom structure of the first fixed part 330 with the cleaning part 310.

  As shown in FIGS. 41A to 41C, the first fixing component 330 includes a column insertion portion 331 into which the wire shaft 311 is inserted, a base portion 332 that supports the column insertion portion 331, 2 and a component insertion portion 333 into which the fixed component 340 is fitted. The base portion 332 has a portion subjected to R processing around the bottom surface. The strut insertion portion 331, the base portion 332, and the component insertion portion 333 are configured as an integral component from the same resin material.

  41 (c) and 41 (e), the component insertion portion 333 includes a top surface fitting recess 334 corresponding to each portion of the second fixed component 340 (see FIG. 42), an upper fitting recess. 335, an intermediate fitting convex part 336, and a lower fitting concave part 337. Moreover, it has the inclination part 338 corresponding to the shape of the pressing part 420 (refer FIG. 47) of the removal tool 400. FIG. The component insertion portion 333 corresponds to the second component side fitting portion VB (see FIG. 9) of the second component coupling structure V.

  As shown in FIG. 41 (e), the top surface fitting concave portion 334 has a concave shape corresponding to the upper fitting convex portion 344 (see FIG. 42) of the second fixed component 340. Further, it is formed on the bottom surface of the base portion 332 corresponding to the top surface of the component insertion portion 333.

  As shown in FIG. 41 (c), the upper fitting recess 335 has a concave shape corresponding to the flat plate portion 342 (see FIG. 42) of the second fixing component 340. The intermediate fitting convex part 336 has a convex shape corresponding to the intermediate fitting concave part 345 (see FIG. 42) of the second fixed component 340. The lower fitting concave portion 337 has a concave shape corresponding to the side fitting convex portion 346 (see FIG. 42) of the second fixed component 340.

  With reference to FIG. 42, the structure of the 2nd fixing | fixed component 340 is demonstrated. FIG. 42 (a) shows the left side structure of the second fixed component 340. FIG. 42B shows a front structure of the second fixing component 340. FIG. 42 (c) shows the back structure of the second fixed component 340. FIG. 42 (d) shows a perspective structure of the second fixed component 340. FIG. 42 (e) shows a planar structure of the second fixed component 340. FIG. 42 (f) shows the bottom structure of the second fixed component 340.

  As shown in FIGS. 42 (a), 42 (d), and 42 (e), the second fixing component 340 includes a main body portion 341 having a shape similar to a U shape in a side view and a square in a plan view. It has a flat plate portion 342 having a shape, and a connecting portion 343 that connects the main body portion 341 and the flat plate portion 342 to each other. The main body portion 341, the flat plate portion 342, and the connecting portion 343 are configured as an integral part from the same resin material.

  As shown in FIG. 42A, the main body portion 341 includes a front straight portion 341A and a rear straight portion 341B having a shape elongated in the Z direction, one end of the front straight portion 341A, and the other of the rear straight portion 341B. And a curved portion 341 </ b> C connecting the end portions of each other. The other end of the front straight portion 341A is connected to the connecting portion 343. The other end of the rear straight portion 341B faces the bottom surface of the flat plate portion 342.

  As shown in FIGS. 42A and 42C, the flat plate portion 342 has an upper fitting convex portion 344 fitted into the top surface fitting concave portion 334 of the first fixed component 330. The rear straight portion 341 </ b> B is provided in one rear fitting convex portion 347 to be fitted into the rear window portion 24 </ b> D (see FIG. 45) of the tip coupling portion 24 and the lower fitting concave portion 337 (see FIG. 43) of the first fixing component 330. It has two side part fitting convex parts 346 to be fitted.

  As shown in FIG. 42B, in the front view of the second fixed component 340, the width of the connecting portion 343 is smaller than the width of the front straight portion 341A and the width of the flat plate portion 342. For this reason, the connection part 343 forms the intermediate fitting recessed part 345 corresponding to the intermediate fitting convex part 336 (refer FIG. 43) of the 1st fixing component 330 between the front straight part 341A and the flat plate part 342.

With reference to FIG. 43 and FIG. 44, the structure of the fixing | fixed component 320 is demonstrated.
FIG. 43A shows a left side structure of the interdental brush attachment 300. FIG. 43B shows a front structure of the interdental brush attachment 300. FIG. 43 (c) shows the back structure of the interdental brush attachment 300. FIG. 43 (d) shows a planar structure of the interdental brush attachment 300. FIG. 43 (e) shows the bottom structure of the interdental brush attachment 300.

  FIG. 44A shows a perspective structure of the interdental brush attachment 300 in which the first fixing component 330 is broken on the plane D43A-D43A in FIG. FIG. 44B shows a cross-sectional structure of the interdental brush attachment 300 on the D43A-D43A plane of FIG. FIG. 44C shows a cross-sectional structure of the interdental brush attachment 300 on the plane D43B-D43B in FIG.

  As shown in FIG. 43A and FIG. 43E, the rear fitting convex portion 347 of the second fixing component 340 is an opening of the component insertion portion 333 below the component insertion portion 333 of the first fixing component 330. Projects in the backward direction XB from the part.

  As shown in FIGS. 43 (b) and 43 (e), the front straight part 341A and the curved part 341C of the second fixing part 340 are exposed in the front direction XA in the opening part on the front side of the first fixing part 330. To do.

  As shown in FIGS. 44A and 44B, the upper fitting convex portion 344 of the second fixing component 340 is fitted into the top surface fitting concave portion 334 of the first fixing component 330. An end surface on the front direction XA side of the flat plate portion 342 of the second fixing component 340 is pressed against the inner surface of the upper fitting recess 335 of the first fixing component 330.

  As shown in FIGS. 43 (c) and 44 (c), the flat plate portion 342 of the second fixing component 340 is fitted into the upper fitting recess 335 of the first fixing component 330. The side fitting convex portion 346 of the second fixed component 340 is fitted into the lower fitting concave portion 337 of the first fixed component 330.

  As shown in FIGS. 43C and 44B, the portion of the intermediate fitting convex portion 336 of the first fixing component 330 corresponding to the second fixing component 340 is the middle of the second fixing component 340. It is fitted in the fitting recess 345.

  With reference to FIG. 45, the detail of the 2nd components coupling | bonding structure V is demonstrated. FIG. 45A shows the left side structure of the interdental brush attachment 300 and the outer case 20. FIG. 45B shows the back structure of the interdental brush attachment 300 and the outer case 20. FIG. 45 (c) shows a cross-sectional structure in a state where the outer case 20 is broken on the D45B-D45B plane of FIG. 45 (b). FIG. 45 (d) shows a cross-sectional structure in a state where the outer case 20 is broken on the plane D45A-D45A of FIG. 45 (a).

  The upper joint portion 21 of the outer case 20, the tip joint portion 24 of the outer case 20, the wire shaft 311 of the interdental brush attachment 300, and the fixing component 320 of the interdental brush attachment 300 each have a central axis orthogonal to the XY plane. .

  45 (a) and 45 (c), in the XZ plane of the electric toothbrush 2, the central axis of the upper coupling portion 21, the central axis of the tip coupling portion 24, the central axis of the wire shaft 311 and fixing The central axes of the parts 320 are parallel to each other. The central axis of the tip coupling portion 24, the central axis of the wire shaft 311, and the central axis of the fixed component 320 are located in the rear direction XB with respect to the central axis of the upper coupling portion 21. The central axis of the wire shaft 311 is located in the rear direction XB with respect to the central axis of the tip coupling portion 24 and the central axis of the fixed component 320. The tip coupling portion 24 and the fixing part 320 have a coaxial axis.

  As shown in FIG. 45 (c), the entire component insertion portion 333 of the fixed component 320 is inserted into the outer side fitting portion VA of the tip coupling portion 24. The bottom surface of the base portion 332 contacts the tip support portion 24 </ b> A of the tip coupling portion 24. The outer surface in the front direction XA and the outer surface in the rear direction XB of the component insertion portion 333 are in contact with the inner surface of the tip coupling portion 24. The upper inclined surface 347A of the rear fitting convex portion 347 faces a portion on the upper direction ZA side of the opening surface 24E of the rear window portion 24D via a gap. The lower inclined surface 347B of the rear fitting convex portion 347 is opposed to the portion on the lower ZB side of the opening surface 24E of the rear window portion 24D via a gap.

  As shown in FIG. 45 (c), the outer surface on the front direction XA side of the component insertion portion 333 is exposed to the outside of the tip coupling portion 24 through the front window portion 24C. The outer surface of the rear fitting convex portion 347 on the rear direction XB side is exposed to the outside of the tip coupling portion 24 through the rear window portion 24D.

  As shown in FIGS. 45 (b) and 45 (d), in the rear view of the toothbrush body 10, the right end YA of the base portion 332 and the right end YA of the tip support portion 24A are substantially the same in the Y direction. Located in the place. The left direction YB end of the base portion 332 and the left direction YB of the tip support portion 24A are located at substantially the same place in the Y direction.

  45 (a) and 45 (c), in the side view of the toothbrush body 10, the end in the front direction XA of the base portion 332 is inward of the end in the front direction XA of the tip support portion 24A. Located on the side. The end in the rear direction XB of the base portion 332 is located on the outer side than the end in the front direction XA of the tip support portion 24A.

With reference to FIG. 46, the coupling | bonding procedure of the interdental brush attachment 300 is demonstrated.
As shown in FIG. 46A, the component insertion portion 333 of the interdental brush attachment 300 is inserted into the outer side fitting portion VA by moving in the downward direction ZB with respect to the distal end coupling portion 24. The outer surface of the component insertion portion 333 moves in the downward direction ZB with respect to the outer side fitting portion VA in a state where it is in contact with the inner surface of the outer side fitting portion VA. The lower inclined surface 347B of the rear fitting convex portion 347 of the fixed component 320 contacts the distal end support portion 24A of the distal end coupling portion 24 when the amount of movement of the stationary component 320 relative to the distal end coupling portion 24 reaches a predetermined amount.

  As shown in FIG. 46 (b), the rear fitting convex portion 347 has an outer fitting portion VA and a force that is larger than the additional fitting force in the state of FIG. 46 (a). It rides on the inner surface of the outer fitting portion VA by contact with the rear fitting convex portion 347. At this time, the rear straight portion 341B (see FIG. 44B) is deformed toward the front straight portion 341A by the reaction force applied from the outer fitting portion VA.

  As shown in FIG. 46 (c), the rear fitting convex portion 347 moves further in the downward direction ZB with respect to the outer side fitting portion VA by the force acting in the downward direction ZB in the state of FIG. 46 (b). When it does, it moves from the inner surface of the outer side fitting part VA to the space of the rear window part 24D of the front end coupling part 24.

  FIG. 46D shows an enlarged structure of the rear fitting convex portion 347 and its periphery in the state of FIG. The upper inclined surface 347A of the rear fitting convex portion 347 is inclined from the lower direction ZB toward the upper direction ZA as it goes from the front direction XA to the rear direction XB with respect to the opening surface 24E of the opposed rear window portion 24D. The lower inclined surface 347B of the rear fitting convex portion 347 is inclined from the lower direction ZB toward the upper direction ZA as it goes from the front direction XA to the rear direction XB with respect to the opening surface 24E of the opposed rear window portion 24D. . The inclination angle of the lower inclined surface 347B with respect to the X direction is larger than the inclination angle of the upper inclined surface 347A with respect to the X direction.

  The outer surface of the component insertion portion 333 receives a reaction force from the outer fitting portion VA due to contact with the inner surface of the outer fitting portion VA in each state shown in FIG. That is, the fixed component 320 is coupled by fitting the component insertion portion 333 and the outer side fitting portion VA. Further, the coupling force between the rear fitting convex portion 347 and the rear window portion 24D increases the coupling force with the outer side fitting portion VA.

The configuration of the removal tool 400 will be described with reference to FIG.
The portable oral hygiene device 1 of this embodiment shown in FIG. 40 has a removal tool 400 for separating the interdental brush attachment 300 from the outer case 20 in addition to the electric toothbrush 2 and the cap 80.

  As shown in FIG. 47 (a), the removal tool 400 includes a grip portion 410 to be gripped by the user during the removal operation of the interdental brush attachment 300, a front window portion 24C and a rear window portion 24D ( 48) and two pressing portions 420 to be inserted. The gripping portion 410 and each pressing portion 420 are formed as an integral part from the same resin material.

  As shown in FIG. 47 (b), when removing the interdental brush attachment 300, the removal tool 400 inserts one pressing portion 420 into the front window portion 24C and moves the other pressing portion 420 to the rear window portion 24D. (See FIG. 48). Each pressing portion 420 separates the interdental brush attachment 300 and the tip coupling portion 24 from each other when a force is applied to bring the pressing portions 420 closer to each other in this state.

With reference to FIG. 48, the isolation | separation procedure of the interdental brush attachment 300 is demonstrated.
As shown in FIG. 48A, when the user removes the interdental brush attachment 300 from the tip coupling portion 24, each pressing portion 420 of the removal tool 400 corresponds to the front window portion 24C and the rear window portion 24D. Place in place.

  As shown in FIG. 48 (b), the user applies an inward force to the gripping portion 410 to bring the pressing portion 420 on the front direction XA side and the pressing portion 420 on the rear direction XB side closer to each other. The pressing portion 420 on the front direction XA side enters the front window portion 24C by the force applied to the gripping portion 410 and is pressed against the inclined portion 338 (see FIG. 41) of the component insertion portion 333. The pressing portion 420 on the rear direction XB side enters the rear window portion 24D by the force applied to the grip portion 410 and is pressed against the rear fitting convex portion 347.

  As shown in FIG. 48 (b), the rear fitting convex portion 347 and the rear straight portion 341B move in the front direction XA by the force applied from the pressing portion 420. For this reason, the rear fitting convex portion 347 and the rear window portion 24D are separated from each other. The component insertion portion 333 receives a force acting in the upward direction ZA as a component force of the force applied to the inclined portion 338 from the pressing portion 420 on the front direction XA side.

  As shown in FIG. 48 (c), the user holds the state in which the rear fitting convex portion 347 and the rear window portion 24D are separated from each other by the pressing portion 420 on the rear direction XB side and presses on the front direction XA side. When a force in the upward direction ZA is applied to the component insertion portion 333 by the portion 420, the interdental brush attachment 300 is moved in the upward direction ZA with respect to the distal end coupling portion 24. As a result, the interdental brush attachment 300 is separated from the tip coupling portion 24.

The portable oral hygiene device 1 of the present embodiment has the following effects in addition to the effects according to the effects (1) to (42) exhibited by the portable oral hygiene device 1 of the first embodiment.
(46) The upper inclined surface 347A of the rear fitting convex portion 347 is inclined from the lower direction ZB toward the upper direction ZA as it goes from the front direction XA to the rear direction XB with respect to the opening surface 24E of the rear window portion 24D. . For this reason, compared with the virtual configuration in which the upper inclined surface 347A is inclined in the opposite direction, the rear straight portion 341B is less likely to be deformed inward when the rear fitting convex portion 347 contacts the rear window portion 24D. For this reason, the fixed component 320 is unlikely to be detached from the tip coupling portion 24. Note that the upper inclined surface 347A of the virtual configuration is inclined from the upper direction ZA to the lower direction ZB as it goes from the front direction XA to the rear direction XB.

  (47) The component insertion portion 333 of the interdental brush attachment 300 has an inclined portion 338. The removal tool 400 includes a pressing portion 420 having a shape corresponding to the inclined portion 338. Therefore, the user can apply an upward ZA force to the interdental brush attachment 300 by sandwiching the component insertion portion 333 by each pressing portion 420 of the removal tool 400. For this reason, the interdental brush attachment 300 can be easily separated from the tip coupling portion 24.

(Other embodiments)
The present invention includes embodiments other than the first to third embodiments. Hereinafter, modifications of the first to third embodiments as other embodiments of the present invention will be described. The following modifications can be combined with each other.

The second part coupling structure V of the second embodiment includes the front contact portion 221, the upper connection portion 223, and the lower connection portion 224 and the outer side fitting portion VA. Are joined together. On the other hand, the second component coupling structure V of the modified example has the following structure (A) or (B).
(A) Instead of the combination of the front contact portion 221, the upper connection portion 223, and the lower connection portion 224, the insertion portion 220 and the distal end are fitted by fitting the front contact portion 221, the rear contact portion 222 and the outer side fitting portion VA. The coupling portion 24 is coupled to each other. The outer surface of the rear contact portion 222 is located in the rear direction XB in the X direction with respect to the outer surface of the upper connection portion 223 and the outer surface of the lower connection portion 224.
(B) The insertion portion 220 and the tip coupling portion 24 are coupled to each other by fitting the front contact portion 221, the upper connection portion 223, the lower connection portion 224, and the rear contact portion 222 and the outer fitting portion VA. The outer surface of the rear contact portion 222 is located at the same location as the outer surface of the upper connection portion 223 and the outer surface of the lower connection portion 224 in the X direction.

  The upper inclined surface 347A of the rear fitting convex portion 347 of the third embodiment is directed from the lower direction ZB to the upper direction ZA as it goes from the front direction XA to the rear direction XB with respect to the opening surface 24E of the rear window portion 24D. Tilt. On the other hand, as shown in FIG. 49A, the upper inclined surface 347A of the rear fitting convex portion 347 of the modification is directed from the front direction XA to the rear direction XB with respect to the opening surface 24E of the rear window portion 24D. As it is, it inclines from the upward direction ZA to the downward direction ZB. That is, it has the virtual configuration described in the column (46) of the third embodiment. Hereinafter, this modified example is referred to as “modified example 3a”. 49 shows a sectional view in which the display of the component insertion portion 333 is replaced with the display of the component insertion portion 333 in FIG. 44C in the sectional structure of the interdental brush attachment 300 shown in FIG. . Further, the second fixed component 340 has a cross-sectional structure in the same plane as the component insertion portion 333 after replacement.

  As shown in FIG. 49 (a), in the electric toothbrush 2 of the modified example 3a, the inclination angle PB of the lower side surface 337B of the lower fitting recess 337 with respect to the X direction is larger than the inclination angle PA of the upper inclination surface 347A with respect to the X direction. large.

  On the other hand, when the lower side surface 337B comes into contact with the lower inclined surface 346B of the side portion fitting convex portion 346, the side portion fitting convex portion 346 receives a force that moves the rear straight portion 341B outward from the lower side surface 337B. . For this reason, the force which presses the back fitting convex part 347 to the opening surface 24E becomes large. That is, the force applied from the lower side surface 337B to the lower inclined surface 346B of the side fitting convex portion 346 acts in the direction of increasing the coupling force between the rear fitting convex portion 347 and the rear window portion 24D.

  On the other hand, when the opening surface 24E of the rear window portion 24D comes into contact with the upper inclined surface 347A, the upper inclined surface 347A receives a force for moving the rear fitting convex portion 347 inward from the opening surface 24E. That is, the force applied from the opening surface 24E to the upper inclined surface 347A acts in the direction of reducing the coupling force between the rear fitting convex portion 347 and the rear window portion 24D.

  Since the electric toothbrush 2 of the modified example 3a has the inclination angle PB larger than the inclination angle PA as described above, the force applied from the lower surface 337B to the lower inclined surface 346B is applied from the opening surface 24E to the upper inclined surface 347A. Greater than the force Therefore, when the lower side surface 337B is in contact with the lower inclined surface 346B and the opening surface 24E is in contact with the upper inclined surface 347A, the rear fitting convex portion is compared with the configuration in which the inclination angle PB is smaller than the inclination angle PA. The coupling force between 347 and the rear window portion 24D increases.

  In the electric toothbrush 2 of Modification 3a, as shown in FIG. 49A, the distance QB between the lower side surface 337B and the lower inclined surface 346B is larger than the distance QA between the upper inclined surface 347A and the opening surface 24E. . The distance QA indicates the distance in the Z direction where the opening surface 24E facing the upper inclined surface 347A and the upper inclined surface 347A are closest to each other in the Z direction. The distance QB indicates a distance in the Z direction at a portion where the lower inclined surface 346B and the lower side surface 337B facing the lower side surface 337B are closest to each other in the Z direction.

  On the other hand, as shown in FIG. 49 (b), in the electric toothbrush 2 of the modified example with respect to the modified example 3a, the distance QB between the lower side surface 337B and the lower side inclined surface 346B is set to the upper inclined surface 347A and the opening surface 24E. Is smaller than the distance QA.

  This electric toothbrush 2 is moved when the component insertion portion 333 moves in the upward direction ZA with respect to the second fixed component 340 and the rear window portion 24D moves in the downward direction ZB with respect to the second fixed component 340. When the external tool 400 is not used, when a pulling force is applied to the interdental brush attachment 300 in the upward direction ZA, the contact between the lower side surface 337B and the lower inclined surface 346B is caused by the relationship between the distance QA and the distance QB. It occurs before the contact between the opening surface 24E and the upper inclined surface 347A. For this reason, the effect | action which arises with the former contact, ie, the effect | action which enlarges the coupling | bonding force of the back fitting convex part 347 and back window part 24D, is the action which arises with the latter contact, ie, the back fitting convex part 347 and back window. This occurs in preference to the action of reducing the coupling force of the portion 24D. For this reason, the effect which becomes difficult to isolate | separate the back fitting convex part 347 and the back window part 24D compared with the structure where the distance QB is larger than the distance QA becomes still higher.

  -The electric toothbrush 2 of 1st Embodiment has the toothbrush side seal member 26 as a member which prevents the penetration | invasion of the foreign material in the toothbrush attachment 50. FIG. Further, the toothbrush side seal member 26 is fitted into the mounting groove 24 </ b> B of the outer case 20. On the other hand, the electric toothbrush 2 of the modified example has a toothbrush side seal member 91 shown in FIG. 50 or a toothbrush side seal member 93 shown in FIG. 51 instead of the toothbrush side seal member 26. Hereinafter, the modification example illustrated in FIG. 50 is referred to as “modification example A”, and the modification example illustrated in FIG. 51 is referred to as “modification example B”.

  As shown in FIG. 50, the toothbrush side seal member 91 of Modification A is fitted into a fitting groove 92 formed on the top surface of the intermediate coupling portion 22 of the outer case 20. Moreover, it has the cyclic | annular part 91A fitted in the fitting groove | channel 92, and the protrusion part 91B which protrudes in the upward direction ZA from the cyclic | annular part 91A. The protruding portion 91 </ b> B is in close contact with the end surface of the toothbrush attachment 50. The annular portion 91A and the protruding portion 91B are formed as an integral member from the same resin material.

The electric toothbrush 2 of the modification A has the following effects.
(A) In addition to the space in which the stain care attachment 100 is accommodated in the toothbrush attachment 50, foreign matter hardly enters between the toothbrush attachment 50 and the upper coupling portion 21 of the outer case 20.
(B) In the process in which the toothbrush attachment 50 and the upper joint portion 21 are joined or separated, the protruding portion 91B does not contact the toothbrush attachment 50, so the frictional resistance applied to the toothbrush attachment 50 is reduced.

  As shown in FIG. 51, the toothbrush side seal member 93 of Modification B is fitted in a fitting groove 94 formed on the outer surface of the opening portion 59 of the toothbrush attachment 50. Moreover, it has the annular part 93A fitted in the fitting groove 94, and the protrusion part 93B which protrudes in the downward direction ZB from the annular part 93A. The protruding portion 93 </ b> B is in close contact with the top surface of the intermediate coupling portion 22. The annular portion 93A and the protruding portion 93B are formed as an integral member from the same resin material.

The electric toothbrush 2 of the modification B has the following effects.
(A) Since the outer surface of the toothbrush side seal member 93 is exposed to the outside of the toothbrush attachment 50, the color of the toothbrush side seal member 93 can be used as identification information of the toothbrush attachment 50. For this reason, in the usage environment where the plurality of toothbrush attachments 50 are used properly, by attaching the toothbrush side seal member 93 of a different color to each of the plurality of toothbrush attachments 50, the plurality of toothbrush attachments 50 are attached using the color of the seal member 93. Can be managed.
(B) In addition to the space in which the stain care attachment 100 is accommodated in the toothbrush attachment 50, foreign matter is less likely to enter between the toothbrush attachment 50 and the upper joint portion 21 of the outer case 20.
(C) In the process in which the toothbrush attachment 50 and the upper joint portion 21 are joined or separated, the protruding portion 93B does not contact the toothbrush attachment 50, so the frictional resistance applied to the toothbrush attachment 50 is reduced.

  -The toothbrush attachment 50 of 1st Embodiment has the brush stay 53 in which only the opening part 59 was formed as a part which connects internal space and the exterior mutually. On the other hand, the brush stay 53 of the toothbrush attachment 50 according to the modified example has a communication hole 95 shown in FIG. 52 as a portion that communicates the internal space with the outside. The communication hole 95 is formed in a wall portion on the back side of the brush stay 53. Hereinafter, the modification example illustrated in FIG. 52 is referred to as “modification example C”.

The electric toothbrush 2 of the modification C has the following effects.
(A) Compared with the electric toothbrush 2 in which the communication hole 95 is not formed in the brush stay 53, the drying property in the toothbrush attachment 50 becomes high.
(B) In a state where the toothbrush attachment 50 is coupled to the toothbrush main body 10, the inside of the toothbrush attachment 50 can be cleaned by washing with water.

  -The electric toothbrush 2 of the modification with respect to the modification C further has the semipermeable membrane 97 and the film | membrane fixing | fixed part 96 which are shown by FIG. The membrane fixing portion 96 is formed around the communication hole 95 on the outer surface of the back side wall portion of the toothbrush attachment 50. The semipermeable membrane 97 is fitted into the membrane fixing portion 96. The communication hole 95 is covered with a semipermeable membrane 97. As the semipermeable membrane 97, a membrane that allows passage of gas but does not allow passage of liquid is used. As a method for fixing the semipermeable membrane 97 to the membrane fixing portion 96, for example, ultrasonic welding or adhesion using a double-sided tape can be used. Hereinafter, the modification example illustrated in FIG. 53 is referred to as “modification example D”.

The electric toothbrush 2 of the modification D has the following effects.
(A) Compared with the electric toothbrush 2 in which the communication hole 95 is not formed in the brush stay 53, the drying property in the toothbrush attachment 50 becomes high. Moreover, it has the same drying property as the electric toothbrush 2 of the modified example C.
(B) Compared with the electric toothbrush 2 of the modified example C, the liquid is less likely to enter the toothbrush attachment 50 during use.

  -The electric toothbrush 2 of 1st Embodiment has the stain care attachment 100 couple | bonded and separated with the front-end | tip coupling | bond part 24 formed as a part of outer case 20, and the front-end | tip coupling | bond part 24. FIG. On the other hand, the electric toothbrush 2 of the modified example has an outer case 20A and a tip attachment 20C shown in FIG. 54, or an outer case 20A and a tip attachment 20D shown in FIG. Hereinafter, the modification example illustrated in FIG. 54 is referred to as “modification example E”, and the modification example illustrated in FIG. 55 is referred to as “modification example F”.

  As shown in FIG. 54, the outer case 20A of Modification E has a shape in which the tip coupling portion 24 is omitted from the outer case 20 of the first embodiment. Moreover, it has the front-end | tip fitting convex part 20B for couple | bonding the front-end | tip attachment 20C. The shape of the tip attachment 20 </ b> C corresponds to a shape in which a part on the tip joint portion 24 side is separated from the upper joint portion 21 by cutting the tip portion of the upper joint portion 21 in the outer case 20. The tip attachment 20 </ b> C includes a toothbrush side seal member 26 and a stain care attachment 100. Moreover, it has the groove | channel by which the front-end | tip fitting convex part 20B is fitted in an inner surface side (illustration omitted). The stain care attachment 100 and the tip attachment 20C have the same relationship as that of the stain care attachment 100 and the tip coupling portion 24.

  The distal end fitting convex portion 20B and the distal end attachment 20C of the upper coupling portion 21 are coupled and separated from each other according to the relative rotational position. That is, when the relative rotational position is the entry position, the tip fitting convex portion 20B enters the groove of the tip attachment 20C. When the relative rotational position changes from the entry position to the coupling position in the state of entering the groove of the tip attachment 20C, the tip fitting convex portion 20B and the groove are coupled to each other. Further, in the state where the tip fitting convex portion 20B and the groove are coupled to each other, the tip fitting convex portion 20B and the groove are separated from each other when the relative rotational position is changed from the coupling position to the entry position.

  As shown in FIG. 55, the electric toothbrush 2 of Modification F has a tip attachment 20D having a configuration similar to the tip attachment 20C of Modification E. The tip attachment 20 </ b> D includes a toothbrush side seal member 26 and a stain care attachment 500. Moreover, it has the groove | channel by which the front-end | tip fitting convex part 20B is fitted in an inner surface side (illustration omitted). The stain care attachment 500 and the tip attachment 20D have the same relationship as the relationship between the stain care attachment 100 and the tip attachment 20C in Modification E. Further, the tip fitting convex portion 20B and the tip attachment 20D have the same relationship as the relationship between the tip fitting convex portion 20B and the tip attachment 20C in Modification E.

The electric toothbrush 2 of the modification E and the modification F has the following effects.
(A) The tip attachment 20 </ b> C or 20 </ b> D can be cleaned while being separated from the upper coupling portion 21. That is, it becomes possible to provide the user with excellent cleaning properties.
(B) The toothbrush side seal member 26 is also replaced with the effect of the tip attachment 20C or 20D. For this reason, it becomes possible to provide the user with excellent maintainability in terms of hygiene.
(C) Since the part of the second part coupling structure V (the tip fitting convex part 20B) in the outer case 20 protrudes from the upper coupling part 21, compared with the configuration having the concave part as the second part coupling structure V. The cleaning property of the outer case 20 is improved.

  -The electric toothbrush 2 of 1st-3rd embodiment has the holding | grip coupling structure U which functions as a switch of the electric motor 41. FIG. Moreover, it does not have a push button type switch for a user to operate. On the other hand, the electric toothbrush 2 of the modification has a push button switch 98 for turning on and off the electric motor 41 as shown in FIG. Further, instead of the decorative ring 12, a decorative ring 99 is formed which forms an integral outer surface together with the gripping outer surface 70Z and the cap outer surface 80Z. In addition, the gripping and coupling structure U of the modified example does not have a function as a switch of the electric motor 41. Hereinafter, the modified example illustrated in FIG. 56 is referred to as “modified example G”.

The electric toothbrush 2 of the modification G has the following effects.
(A) The structure of the grip coupling structure U is simplified.
(B) When the cap 80 is coupled to the electric toothbrush 2, an integral outer surface is formed by the outer surfaces of the cap 80, the decorative ring 99, and the gripping case 70. The state in which the integral outer surface is formed is that when the virtual surface is formed by extending the outer surface of any one of the cap 80, the decorative ring 99, and the gripping case 70, all the outer surfaces of the other components are formed. Indicates a state belonging to this virtual plane.

  -The electric toothbrush 2 of the modification of 2nd or 3rd embodiment has a structure according to the structure of the electric toothbrush 2 of modification AG. The electric toothbrush 2 of this modified example has an effect according to the effect exhibited by the electric toothbrush 2 of the modified examples A to G.

  -The electric toothbrush 2 of 1st Embodiment has the 2nd components coupling | bonding structure V which couple | bonds and isolate | separates the outer case 20 and the stain care attachment 100 mutually. On the other hand, the electric toothbrush 2 of the modification has a structure in which the stain care attachment 100 is fixed to the outer case 20. That is, the stain care attachment 100 cannot be separated from the outer case 20. As a method for fixing the stain care attachment 100, for example, press-fitting or adhesion can be used. According to the electric toothbrush 2 of this modification, the transmission efficiency of vibration from the outer case 20 to the stain care attachment 100 is increased. For this reason, the effect of stain removal is also enhanced.

  The electric toothbrush 2 of the first embodiment has a central axis in which the insertion portion 130 (second component side fitting portion VB) of the stain care attachment 100 is eccentric with respect to the distal end coupling portion 24 of the outer case 20. On the other hand, in the electric toothbrush 2 of the modified example, the distal end coupling portion 24 of the outer case 20 and the insertion portion 130 of the stain care attachment 100 are coaxial.

  -The electric toothbrush 2 of 1st Embodiment has the stain care attachment 100 formed with the silicone rubber containing an abrasive | polishing agent. On the other hand, the electric toothbrush 2 of the modified example has a stain care attachment 100 formed of natural rubber.

  -The electric toothbrush 2 of 1st Embodiment has the stain care attachment 100 comprised by the attachment main body 110 and the core member 140. FIG. On the other hand, the electric toothbrush 2 of a modified example has a metal material part subjected to knurling as a stain care attachment.

  -The electric toothbrush 2 of 1st Embodiment has the stain care attachment 100 as a 2nd functional component. On the other hand, the electric toothbrush 2 of a modification has a nail brush attachment or a gum massage attachment as a second functional component.

  -The electric toothbrush 2 of 1st Embodiment has the toothbrush attachment 50 as a 1st functional component, and has the stain care attachment 100 as a 2nd functional component. On the other hand, the electric toothbrush 2 of a modification has the 1st functional component and 2nd functional component of the combination of the following (A)-(F).

  (A) The electric toothbrush 2 of a modification has the toothbrush attachment 50 as a 1st functional component. The second functional component includes any one functional component of a toothbrush attachment, a gum massage attachment, a point brush, a nail brush attachment, a dentifrice tube, an interdental brush attachment, and a vibration adjusting bell.

  (B) The electric toothbrush 2 of a modification has a gum massage attachment as a first functional component. In addition, as a second functional component, any one functional component of toothbrush attachment, gum massage attachment, point brush, nail brush attachment, dentifrice tube, bell for vibration adjustment, interdental brush attachment, and stain care attachment Have.

  (C) The electric toothbrush 2 of a modification has a point brush as a 1st functional component. In addition, as a second functional component, any one functional component of point brush, toothbrush attachment, gum massage attachment, nail brush attachment, dentifrice tube, bell for vibration adjustment, interdental brush attachment, and stain care attachment. Have.

  (D) The electric toothbrush 2 of a modification has an attachment for nail brushing as a 1st functional component. The second functional component includes any one functional component of a toothbrush attachment, a gum massage attachment, a point brush, a dentifrice tube, a vibration adjusting bell, an interdental brush attachment, and a stain care attachment.

  (E) The electric toothbrush 2 of a modification has a stain care attachment as a 1st functional component. As a second functional component, any one of a stain care attachment, a toothbrush attachment, a gum massage attachment, a point brush, a nail brush attachment, a dentifrice tube, a vibration adjusting bell, an interdental brush attachment, and a paste tube Has two functional parts.

  (F) The electric toothbrush 2 of a modification has an interdental brush attachment as a 1st functional component. The second functional component includes any one functional component of an interdental brush attachment, a toothbrush attachment, a gum massage attachment, a point brush, a nail brush attachment, a dentifrice tube, and a vibration adjusting bell.

  The electric toothbrush 2 having a vibration adjusting weight among the electric toothbrushes 2 of the modified examples (A) to (F) has a structure for coupling and separating the toothbrush body 10 and the weight from each other. When the weight is combined with the toothbrush main body 10, the vibration generator 40 reduces the vibration given to a 1st functional component or a 2nd functional component. On the other hand, when the weight is separated from the toothbrush body 10, the vibration applied to the first functional component or the second functional component is larger than when the weight is coupled. That is, the weight adjusts the magnitude of vibration that the vibration generator 40 imparts to the first functional component or the second functional component.

  -The electric toothbrush 2 of the modification of 2nd or 3rd embodiment has a structure according to the structure of the said electric toothbrush 2 of (A)-(F). The electric toothbrush 2 of this modified example has an effect according to the effect exhibited by the electric toothbrush 2 of the modified examples A to G.

  -The stain care attachment 100 of 1st Embodiment does not have the convex part corresponding to the front window part 24C and the back window part 24D. On the other hand, the stain care attachment 100 of the modified example has at least one of a front fitting convex portion corresponding to the front window portion 24C and a rear fitting convex portion corresponding to the rear window portion 24D.

  -The interdental brush attachment 200 of 2nd Embodiment has the back fitting convex part 225 corresponding to back window part 24D, and does not have the convex part corresponding to front window part 24C. On the other hand, the interdental brush attachment 200 of the modified example further includes a front fitting convex portion corresponding to the front window portion 24C. That is, the second part coupling structure V includes the front window portion 24C and the rear window portion 24D as two first additional fitting portions, and the front fitting convex portion and the rear fitting convex portions as two second additional fitting portions. The portion 225 has a structure that can be fitted together. The two second additional fitting portions have a positional relationship facing each other with respect to the central axis in the longitudinal direction of the insertion portion 220. According to this structure, the force which couple | bonds the outer case 20 and the interdental brush attachment 200 mutually becomes still higher.

  -The interdental brush attachment 300 of 3rd Embodiment has the back fitting convex part 347 corresponding to back window part 24D, and does not have the convex part corresponding to front window part 24C. On the other hand, the interdental brush attachment 300 of the modified example further includes a front fitting convex portion corresponding to the front window portion 24C. That is, the second part coupling structure V includes the front window portion 24C and the rear window portion 24D as two first additional fitting portions, and the front fitting convex portion and the rear fitting convex portions as two second additional fitting portions. The portion 347 has a structure that can be fitted together. The two second additional fitting portions have a positional relationship facing each other with respect to the central axis in the longitudinal direction of the component insertion portion 333. According to this structure, the force which couple | bonds the outer case 20 and the interdental brush attachment 300 mutually becomes still higher.

  -The electric toothbrush 2 of 1st-3rd embodiment has the current fuse 62 between the electricity supply metal fitting 67 and the anode terminal of the output side of the circuit board 61. FIG. On the other hand, the electric toothbrush 2 of the modification has a current fuse 62 between the cathode fitting 63 and the cathode terminal on the output side of the circuit board 61.

  -The electric toothbrush 2 of 1st-3rd embodiment has the decoration ring 12 comprised separately from the main body case 11. As shown in FIG. On the other hand, the electric toothbrush 2 of the modified example has a portion corresponding to the decorative ring 12 formed as a part of the main body case 11 instead of the decorative ring 12. Alternatively, in place of the decorative ring 12, a portion corresponding to the decorative ring 12 formed as a part of the gripping case 70 is provided.

  In the electric toothbrush 2 of the first to third embodiments, when the rotation position of the gripping case 70 with respect to the main body case 11 is the on position, the gripping outer surface 70Z does not form an integral outer surface with respect to the cap outer surface 80Z. On the other hand, in the electric toothbrush 2 of the modification, the gripping outer surface 70Z forms an outer surface integral with the cap outer surface 80Z when the rotation position of the gripping case 70 with respect to the main body case 11 is the on position and the off position. The formation of an integral outer surface indicates a state in which one outer surface is extended to form a virtual surface, and the other outer surface belongs to the virtual surface.

  The electric toothbrush 2 as an example of the modified example has a cap having an N-shaped cross section in the XY plane instead of the cap 80, and has a gripping case having an N-shaped cross section in the XY plane instead of the gripping case 70. . In the N-shaped cap and the N-shaped gripping case, the outer surface of the cap and the gripping case forms an integral outer surface when the relative rotation position is the off position and the on position, respectively. At this time, the rotation angle of the gripping case for changing from the off position to the on position is defined by “360 degrees / N degrees”.

  -The electric toothbrush 2 of 1st-3rd embodiment has a structure which can rotate the holding | grip case 70 with respect to the main body case 11 as the holding | grip coupling structure U. As shown in FIG. On the other hand, the electric toothbrush 2 of the modified example has a structure capable of relative movement in the longitudinal direction between the main body case 11 and the gripping case 70 instead of or in addition to the rotation of the gripping case 70 with respect to the main body case 11. The electric toothbrush 2 turns off the electric motor 41 when the gripping case 70 is located at a first predetermined position in the longitudinal direction with respect to the main body case 11. On the other hand, when the gripping case 70 is located at the second predetermined position in the longitudinal direction with respect to the main body case 11, the electric motor 41 is turned on.

  The gripping and coupling structure U of the electric toothbrush 2 of the first to third embodiments has a structure in which the entire gripping case 70 rotates with respect to the main body case 11. On the other hand, the gripping and coupling structure U of the electric toothbrush 2 according to the modification has two gripping cases (hereinafter referred to as “divided gripping cases”) that can be individually rotated with respect to the main body case 11. The divided gripping case has a lower divided case including the lower wall portion 72 to the middle portion in the Z direction, and an upper divided case including the middle portion to the opening portion 73. The configuration of the divided gripping case including the lower split case and the upper split case is in accordance with the configuration of the gripping case 70. The gripping and coupling structure U of this modification has a structure in which the lower divided case rotates with respect to the main body case 11. The relative rotation state of the main body case 11 and the lower divided case has a separated state, an off state, and an on state, similarly to the relative rotation state of the main body case 11 and the gripping case 70.

  The electric toothbrush 2 of the first to third embodiments has an electric motor 41 in the upper coupling portion 21 of the outer case 20. On the other hand, the modified electric toothbrush 2 has an electric motor 41 in the intermediate coupling portion 22. Alternatively, the electric motor 41 is provided across the intermediate coupling portion 22 and the lower coupling portion 23.

  The decorative ring 12 according to the first to third embodiments has a structure in which the decorative surface 12Z is in contact with the installation surface of the portable oral hygiene device 1 at two or more points. On the other hand, the decorative ring 12 of the modified example has a flat surface that contacts the installation surface of the portable oral hygiene device 1. The plane restricts the portable oral hygiene device 1 from rotating with respect to the installation surface.

  The portable oral hygiene device 1 of the first to third embodiments includes the electric toothbrush 2 and the cap 80. On the other hand, the portable oral hygiene device 1 of the modified example omits the cap 80. That is, the electric toothbrush 2 alone constitutes the entire portable oral hygiene device 1.

-The electric toothbrush 2 of 1st-3rd embodiment has the dry battery 3 as a power supply. On the other hand, the electric toothbrush 2 of a modification has a secondary battery as a power source.
The present invention can be applied to other oral hygiene devices other than the portable oral hygiene device 1 exemplified in the first to third embodiments. Examples of other oral hygiene devices include a stain removing device. The stain removing device includes a polishing portion for polishing teeth, an electric motor that vibrates the polishing portion, a main body case that holds the electric motor, and a gripping case that covers an outer surface of the main body case.

  Each term in the first to third embodiments and other embodiments has the following correspondence with each term described in the claims. The portable oral hygiene device 1 corresponds to an “oral hygiene device”. The electric toothbrush 2 corresponds to an “electric toothbrush” in the claims. The toothbrush body 10 corresponds to an “apparatus body” in the claims. The upper coupling portion 21 and the tip coupling portion 24 correspond to an “insertion portion” in the claims. The tip coupling portion 24 corresponds to a “body coupling portion” in the claims. The mounting groove 24B corresponds to the “mounting groove” in the claims. The ventilation groove 24F corresponds to a “ventilation groove” in the claims. The toothbrush side seal member 26 corresponds to “intrusion restricting structure” and “elastic member” in the claims. The annular portion 26A corresponds to a “basic elastic portion” in the claims. The protruding portion 26B corresponds to a “deformation elastic portion” in the claims. The electric motor 41 corresponds to the “electric motor” in the claims. The toothbrush attachment 50 corresponds to “functional component”, “first functional component”, and “toothbrush component” in the claims. The communication hole 95 corresponds to “a ventilation portion” and “a communication hole” in the claims. The semipermeable membrane 97 corresponds to the “venting portion” and the “semipermeable membrane” in the claims. The stain care attachment 100 corresponds to “functional component” and “second functional component” in the claims. The interdental brush attachment 200 corresponds to “functional component” and “second functional component” in the claims. The interdental brush attachment 300 corresponds to “functional component” and “second functional component” in the claims. The stain care attachment 500 corresponds to “functional component” and “second functional component” in the claims. The first part coupling structure S corresponds to “first part coupling structure” in the claims. The second part coupling structure V corresponds to “second part coupling structure” in the claims. The outer side fitting portion VA corresponds to an “insertion portion” in the claims.

  DESCRIPTION OF SYMBOLS 1 ... Portable oral hygiene apparatus, 2 ... Electric toothbrush, 10 ... Toothbrush main body, 21 ... Upper joint part, 24 ... Tip joint part, 24B ... Mounting groove, 24F ... Ventilation groove, 26 ... Toothbrush side sealing member, 26A ... Annular Part, 26B ... projecting part, 41 ... electric motor, 50 ... toothbrush attachment, 95 ... communication hole, 97 ... semi-permeable membrane, 100 ... stain care attachment, 200 ... interdental brush attachment, 300 ... interdental brush attachment, S ... 1st component coupling | bonding structure, V ... 2nd component coupling | bonding structure, VA ... Outer side fitting part.

Claims (12)

In an oral hygiene device including a functional component that acts on the oral cavity and a device body that supports the functional component,
The functional component has a first functional component and a second functional component,
The first functional component has a space for accommodating the second functional component;
The second functional component is located in a space in the first functional component,
The device main body and the first functional component have a first component coupling structure for coupling and separating the device main body and the first functional component from each other,
The oral hygiene device has an intrusion regulation structure that prevents entry of foreign matter into the space in the first functional component. In claim 1,
The intrusion restricting structure includes an elastic member that seals a gap between the apparatus main body or the second functional component and the first functional component. In claim 2,
The elastic member is located between the inner surface of the first functional component and the outer surface of the second functional component, and is in close contact with the inner surface of the first functional component and the outer surface of the second functional component. In claim 2 or 3,
The apparatus main body, the first functional component, or the second functional component has a mounting groove into which the elastic member is fitted,
The elastic member has a basic elastic part fitted in the mounting groove, and a deformed elastic part protruding from the basic elastic part,
The deformation elastic portion is in contact with a surface of a member facing the member having the mounting groove among the device main body, the first functional component, and the second functional component,
The deformation elastic part is smaller in thickness than the basic elastic part. In any one of Claims 2-4,
The apparatus main body has an insertion portion to be inserted into a space in the first functional component,
The elastic member is attached to the insertion portion. In any one of Claims 2-5,
The elastic member has a portion exposed to the outer surface side of the first functional component. In any one of Claims 1-6,
The device main body and the second functional component have a second component coupling structure for coupling and separating the device main body and the second functional component from each other. In claim 7, which cites any one of claims 2 to 6 ,
The apparatus main body has a main body coupling portion into which the second functional component is fitted as the second component coupling structure,
The main body coupling portion includes an attachment groove into which the elastic member is fitted, and a ventilation groove formed across the attachment groove in the width direction of the attachment groove. In any one of Claims 1-8,
The first functional component has a ventilation portion that communicates the space in the first functional component with the outside of the first functional component. In claim 9,
The ventilation portion has a communication hole that penetrates the wall portion of the first functional component. In claim 9 or 10,
The ventilation portion includes a semipermeable membrane that constitutes a part of the wall portion of the first functional component. In any one of Claims 1-11,
The oral hygiene device as an electric toothbrush includes a toothbrush component as the first functional component and an electric motor having an output shaft with an eccentric weight.