Oral cleaning device

Abstract

The present invention provides an oral cleaning device, which includes: a main unit, which includes a pump for spraying a cleaning liquid; a tube, which is connected to the main unit in a manner for the sprayed cleaning liquid to flow; and a cleaning unit, which is connected to the tube in a manner capable of spraying the cleaning liquid. The oral cleaning device also includes a coupling portion, which utilizes magnetic force to combine the main unit and the cleaning unit. Thus, it is possible to provide an oral cleaning device in which the cleaning unit can be easily installed on the main unit.

Description

[0001] This application is a divisional application of an application with an application date of November 9, 2017, application number 201711099315.6, and invention name “Oral Cleaning Device”. Technical Field

[0002] The invention relates to an oral cleaning device for cleaning the oral cavity by using a cleaning liquid. Background Art

[0003] In the past, an oral cleaning device including a main unit, a tube, and a cleaning unit is disclosed in, for example, Japanese Patent Publication No. 2015-217174 (hereinafter referred to as "Patent Document 1"). The main unit has: a tank for storing a cleaning liquid; and a pump for spraying the cleaning liquid. The tube is connected to the main unit and is used to flow the cleaning liquid sprayed by the pump. The cleaning unit includes a cleaning component that sprays the cleaning liquid supplied from the tube.

[0004] Patent document 1 discloses an example of a conventional oral cleaning device. Conventional oral cleaning devices also include a structure for attaching and detaching a cleaning unit relative to a main unit. Thus, when the cleaning unit is used, the user removes the cleaning unit from the main unit. On the other hand, when the cleaning unit is not used, the user can attach the cleaning unit to the main unit.

[0005] In conventional oral cleaning devices, when the cleaning unit is mounted on the main unit so as to contact the main unit, the cleaning unit may be slightly displaced from a suitable mounting position. In other words, the cleaning unit may not be mounted at a suitable position on the main unit. Summary of the invention

[0006] In one technical solution of the oral cleaning device of the present invention, the oral cleaning device includes: a main unit, which includes a pump for spraying cleaning liquid; a tube, which is connected to the main unit in a manner for the sprayed cleaning liquid to flow; a cleaning unit, which is connected to the tube in a manner capable of spraying the cleaning liquid; and a coupling part, which utilizes magnetic force to combine the main unit and the cleaning unit.

[0007] According to the oral cleaning device of the present invention, the cleaning unit can be easily installed at an appropriate position of the main body unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a perspective view of the oral cleaning device according to the embodiment.

[0009] Figure 2 yes Figure 1 Front view of the oral cleaning device.

[0010] Figure 3 yes Figure 1 A top view of the main unit.

[0011] Figure 4 This is a perspective view showing a state where the cleaning unit is removed from the main body unit.

[0012] Figure 5 It is along Figure 2 A cross-sectional view of line 5-5.

[0013] Figure 6 yes Figure 5 An enlarged view of part A.

[0014] Figure 7 It is along Figure 2 A cross-sectional view of line 7-7.

[0015] Figure 8 yes Figure 7 An enlarged view of part B.

[0016] Fig. 9 yes Figure 1 An exploded perspective view of the main unit.

[0017] Fig.10 It is along Figure 3 A cross-sectional view of line 10-10.

[0018] Fig.11 It is along Figure 2 A cross-sectional view of line 11-11.

[0019] Fig.12 It is along Figure 2 A cross-sectional view of line 12-12.

[0020] Fig.13 yes Figure 1 Bottom view of the main unit.

[0021] Fig.14 It is along Fig.13 A cross-sectional view of line 14-14.

[0022] Fig.15 It is a cross-sectional view of a sixth sealing portion showing a modified example.

[0023] Fig.16 It is a perspective view showing an example of an oral cleaning device according to a modified example. DETAILED DESCRIPTION

[0024] (An example of a possible form of the oral cleaning device)

[0025] (1) In one embodiment of the oral cleaning device of the present invention, the oral cleaning device includes: a main unit including a pump for spraying a cleaning liquid; a tube connected to the main unit in a manner for allowing the sprayed cleaning liquid to flow; a cleaning unit connected to the tube in a manner capable of spraying the cleaning liquid; and a coupling portion that utilizes a magnetic force to combine the main unit and the cleaning unit.

[0026] Thus, when the cleaning unit is brought close to the main unit, the cleaning unit and the main unit are combined together by the magnetic force of the coupling part. Therefore, even if the cleaning unit is not correctly aligned with the main unit as in the conventional oral cleaning device, the cleaning unit can be installed on the main unit.

[0027] (2) In an example of an oral cleaning device, the coupling portion includes a first coupling portion provided on the main unit and a second coupling portion provided on the cleaning unit, one of the first coupling portion and the second coupling portion includes a magnet, and the other of the first coupling portion and the second coupling portion includes a magnet or a ferromagnetic body. Thus, the structure of the coupling portion can be simplified.

[0028] (3) In one example of the oral cleaning device, the first connecting portion includes a magnet and the second connecting portion includes a ferromagnetic body. Thus, when the cleaning unit is removed from the main unit, the second connecting portion does not attract the ferromagnetic body around the oral cleaning device.

[0029] (4) In one example of the oral cleaning device, the first coupling portion includes a first housing portion for housing a magnet or a ferromagnetic body, thereby making it difficult for the magnet or the ferromagnetic body to be contaminated.

[0030] (5) In an example of an oral cleaning device, the main unit further includes a first housing for housing the pump. The first housing includes a first outer wall constituting an outer contour of the main unit, and the first housing portion includes a second outer wall constituting an outer contour of the main unit together with the first outer wall of the main unit. Thus, the oral cleaning device can be miniaturized.

[0031] (6) In one example of the oral cleaning device, the second outer wall of the main body unit is thinner than the first outer wall of the main body unit at a portion around the second outer wall of the main body unit, thereby increasing the magnetic force acting between the first and second coupling parts.

[0032] (7) An example of an oral cleaning device is used, wherein the second coupling portion includes a second storage portion, the second storage portion is used to store a magnet or a ferromagnetic body, and the cleaning unit includes a second shell, and the second shell includes a gripping portion. The second shell includes a first outer wall constituting the outer contour of the cleaning unit, and the second storage portion includes a second outer wall constituting the outer contour of the cleaning unit together with the first outer wall of the cleaning unit. Moreover, the thickness of the second outer wall of the cleaning unit is thinner than the thickness of the portion of the first outer wall of the cleaning unit that is located around the second outer wall of the cleaning unit. Thus, the magnetic force acting between the first coupling portion and the second coupling portion can be enhanced.

[0033] (8) In an example of an oral cleaning device, the second outer wall of the main unit includes a recessed portion corresponding to the shape of the outer profile of the cleaning unit, and a magnet or a ferromagnetic body is provided on the inner surface side of the recessed portion in the second outer wall of the main unit. Thus, when the cleaning unit and the main unit are combined together using the joint, the cleaning unit is arranged in the recessed portion of the main unit. Therefore, the posture of the cleaning unit combined with the main unit can be determined by the joint.

[0034] (9) In an example of an oral cleaning device, the recess is formed in a manner extending along the height direction of the main unit, and a magnet or a ferromagnetic body is provided on the inner surface side of the recess at the center of the height direction of the main unit. Thus, the force of the joint for combining the cleaning unit with the main unit acts evenly on the entire cleaning unit. Therefore, the posture of the cleaning unit combined with the main unit is further stabilized.

[0035] (10) In an example of an oral cleaning device, a first outer wall of the main unit includes a limiting portion, which is used to limit the downward movement of a cleaning unit installed on the main unit relative to the main unit. Thus, when the cleaning unit combined with the main unit moves downward relative to the main unit due to its own weight, the cleaning unit abuts against the limiting portion. Therefore, the height position of the cleaning unit relative to the main unit can be determined.

[0036] (11) In one example of an oral cleaning device, the cleaning unit includes: a second housing including a grip; and a nozzle provided on the second housing so as to be able to spray a cleaning liquid, and the second coupling portion is provided on the grip. Thus, the nozzle can be miniaturized.

[0037] (12) In an example of an oral cleaning device, the second housing includes: a first end portion, on which a nozzle is mounted; and a first end surface, which is formed at the first end portion. Furthermore, when the cleaning unit is mounted on the main unit, the first end surface and the upper surface of the main unit are substantially arranged on the same plane. Thus, the positional relationship between the first end surface and the upper surface of the main unit can be used as one of the marks when the cleaning unit is mounted on the main unit.

[0038] (13) In one example of an oral cleaning device, the main unit further includes a configuration portion, which is provided on the main unit in such a manner that the tube can be configured when the cleaning unit is installed on the main unit. The configuration portion includes a recessed portion provided on the main unit. Thus, when the cleaning unit is installed on the main unit, the tube can be stored in the configuration portion.

[0039] (14) In an example of an oral cleaning device, the second housing is configured such that, when the cleaning unit is mounted on the main unit, the second end portion on the opposite side to the first end portion faces the placement portion. Thus, when the user removes the cleaning unit from the main unit, the user can easily grasp the second end portion. As a result, the cleaning unit can be easily removed from the main unit.

[0040] (Implementation Method)

[0041] Below, use Figure 1 A schematic structure of the oral cleaning device 1 according to the embodiment will be described.

[0042] Figure 1 : is a three-dimensional diagram showing the appearance of an oral cleaning device 1 according to an embodiment. The oral cleaning device 1 is used for cleaning the oral cavity, mainly for cleaning the teeth and gums in the oral cavity. The oral cleaning device 1 is used by being set on a flat setting surface such as a wash basin (not shown) or the like. The oral cleaning device 1 is driven by power supplied from an external power source (not shown) such as a commercial power source, and sprays a cleaning liquid into the oral cavity. An example of the cleaning liquid is tap water or tap water mixed with a cleaning agent.

[0043] The oral cleaning device 1 includes a main unit 10, a tube 80, a cleaning unit 100, and a power cord PC. The main unit 10 includes a device body 20 and a tank 70. The tank 70 is used to store a cleaning solution. The tank 70 is, for example, detachably disposed on the device body 20.

[0044] The device body 20 houses various components for driving the oral cleaning device 1. Specifically, the device body 20 includes a first housing 21 (housing), a pump 31, a motor 32, and a power supply circuit 33 (see Figure 7 ). The pump 31, the motor 32, and the power circuit 33 are housed in the first housing 21. The pump 31 is used to eject the cleaning liquid stored in the tank 70. The motor 32 is used to drive the pump 31. The power circuit 33 is used to supply power to the motor 32. The power cord PC is electrically connected to the power circuit 33. The plug PG of the power cord PC is connected to an external power source. Thus, the power of the external power source is supplied to the power circuit 33 via the power cord PC.

[0045] The pipe 80 is connected to the main unit 10, and is used to allow the cleaning liquid sprayed by the pump 31 to flow to the main unit 10. The cleaning unit 100 is connected to the pipe 80, and is used to spray the cleaning liquid. The cleaning unit 100 is detachably arranged on the main unit 10. In addition, Figure 1 The washing unit 100 is shown in a state where it is attached to the main unit 10 . When the user uses the washing unit 100 for washing the inside of the oral cavity, the washing unit 100 is removed from the main unit 10 .

[0046] The first housing 21 (housing) of the device body 20 is formed by combining a plurality of parts 22. The first housing 21 is made of a material such as ABS (Acrylonitrile Butadiene Styrene) resin. The plurality of parts 22 include an upper cover 23, a housing body 30, a bottom cover 24, and a configuration portion 40. Each of the parts 22 is formed using a resin material and is formed in the form of a molded product that is independent of each other. The upper cover 23, the bottom cover 24, and the configuration portion 40 are respectively combined with the housing body 30. The upper cover 23 constitutes a flat upper surface 23A of the device body 20.

[0047] The tube 80 is composed of, for example, a retractable, curled tube. In addition, the type of material constituting the tube 80, the diameter of the tube 80, and the wall thickness of the tube 80 are preferably determined based on, for example, the ease of movement of the cleaning unit 100 when it moves around the main unit 10 and the durability of the tube 80. The tube 80 is composed of a highly flexible material such as EVA (Ethylene VinylAcetate copolymer) resin. An example of the diameter of the tube 80 is preferably in the range of 3.0 mm to 5.0 mm. A specific example of the diameter of the tube 80 is 4.0 mm. An example of the wall thickness of the tube 80 is preferably in the range of 0.5 mm to 1.5 mm. A specific example of the wall thickness of the tube 80 is 1.0 mm.

[0048] The cleaning unit 100 includes a second shell 101 and a nozzle 105. The nozzle 105 is provided on the first end face 103A of the second shell 101 in a manner capable of ejecting cleaning liquid. The second shell 101 is made of a material such as ABS resin, for example. The second shell 101 includes a gripping portion 102. The gripping portion 102 is configured so that the user can grip the cleaning unit 100 with one hand. The second shell 101 includes a first end 103 and a second end 104 which is an end on the opposite side of the first end 103. The first end 103 includes a first end face 103A. The first end face 103A is configured so that the nozzle 105 can be mounted as described above. The second end 104 includes a second end face 104A. The tube 80 is inserted into the second shell 101, for example, from the second end face 104A, and is connected to the inlet of the cleaning liquid passage provided in the second shell 101. The nozzle 105 is connected to the outlet of the cleaning liquid passage.

[0049] The cleaning unit 100 further includes an operating portion 106. The operating portion 106 is provided on the grip portion 102. The operating portion 106 is used to open and close a water stop valve (not shown) provided in the second housing 101. Specifically, when the water stop valve is opened by operating the operating portion 106, the cleaning liquid flowing in the tube 80 is ejected from the ejection port 105A of the nozzle 105. On the other hand, when the water stop valve is closed by operating the operating portion 106, the ejection of the cleaning liquid from the ejection port 105A of the nozzle 105 is stopped.

[0050] The main body unit 10 further includes an operation unit 50 and a display unit 60. The operation unit 50 mainly has a function of selecting an operation of the main body unit 10 related to the discharge of the cleaning liquid. The operation unit 50 is provided on the upper surface 23A of the device main body 20, for example.

[0051] The operating unit 50 includes a plurality of buttons. The plurality of buttons include a first button 51, a second button 52, and a third button 53, which function as follows under the operation of the user. The first button 51 is used to switch the power of the main unit 10 on and off. The second button 52 is used to increase the water pressure of the cleaning fluid sprayed from the pump 31. The third button 53 is used to reduce the water pressure of the cleaning fluid sprayed from the pump 31. The water pressure of the cleaning fluid sprayed from the pump 31 can be adjusted within the range of the spray pressure of the pump 31 by operating the second button 52 and the third button 53. Specifically, an example of the spray pressure of the pump 31 is preferably 3.0 kgf / cm 2 ~8.0kgf / cm 2 Furthermore, the water pressure of the cleaning liquid ejected from the ejection port 105A of the nozzle 105 changes accordingly with the water pressure of the cleaning liquid ejected from the pump 31.

[0052] The maximum discharge pressure of the pump 31 is preferably greater than the prescribed maximum discharge pressure. The prescribed maximum discharge pressure is determined, for example, based on the relationship between the pressure and the force with which the cleaning liquid discharged from the discharge port 105A of the nozzle 105 causes the dirt in the oral cavity to fall off. An example of the prescribed maximum discharge pressure is preferably 4 kgf / cm 2 The maximum discharge pressure is more preferably 6 kgf / cm 2 In particular, the maximum discharge pressure is preferably 8 kgf / cm 2 .

[0053] The display unit 60 is used to display various information related to the operation of the operating unit 50. The display unit 60 includes, for example, a plurality of LED (Light Emitting Diode) lamps provided on the upper surface 23A of the device body 20. The lighting state (for example, the number of lights) of each LED lamp is adjusted by the second button 52 and the third button 53 of the operating unit 50, and is used to display the change in the strength of the water pressure of the cleaning liquid.

[0054] The arrangement portion 40 is provided to be coupled to the housing body 30, and the tube 80 is arranged in the arrangement portion 40 when the cleaning unit 100 is mounted on the main unit 10. The arrangement portion 40 includes a recess 41. The recess 41 is configured to accommodate the tube 80. The recess 41 includes an opening 41A opened on the front side 30D of the housing body 30.

[0055] As described above, the schematic structure of the oral cleaning device 1 according to the embodiment is constructed.

[0056] Below, use Figure 2 The structure of the oral cleaning device 1 as viewed from the front will be described.

[0057] Figure 2 1 is a front view of the oral cleaning device 1 showing a state in which the cleaning unit 100 , in which the nozzle 105 is removed from the second housing 101 , is attached to the main body unit 10 .

[0058] The second housing 101 of the cleaning unit 100 is configured such that, when the cleaning unit 100 is mounted on the main unit 10, the second end 104 faces the arrangement portion 40. Therefore, when removing the cleaning unit 100 from the main unit 10, the user can easily grasp the second end 104. Thus, the user can easily remove the cleaning unit 100 from the main unit 10.

[0059] When the cleaning unit 100 is installed on the main unit 10, the first end face 103A of the second shell 101 and the upper surface 23A of the device body 20 are substantially arranged on the same plane. Therefore, the user can use the positional relationship between the first end face 103A and the upper surface 23A of the device body 20 as one of the marks when the cleaning unit 100 is installed on the main unit 10. In addition, the state of being substantially arranged on the same plane includes a state in which no step is formed between the first end face 103A and the upper surface 23A of the device body 20 and a state in which a small step is formed. The small step refers to a step to the extent that a hand moving around the main unit 10 is not easily stuck between the device body 20 and the cleaning unit 100. In other words, it is a step to the extent that no step is formed between the upper surface 23A of the device body 20 and the first end face 103A of the cleaning unit 100, or a step of a size that is regarded as substantially the same as the extent to which no step is formed.

[0060] Next, use Figure 3 The structure of the oral cleaning device 1 as seen from above will be described.

[0061] Figure 3 It is a top view of the oral cleaning device 1 with the cleaning unit 100 omitted.

[0062] like Figure 3 As shown, when viewed from above, the planar shape of the main unit 10 is preferably an ellipse or a substantially ellipse. The planar shape of the main unit 10 is the planar shape of the main unit 10 when the tank 70 is installed on the device body 20. That is, the planar shape of the main unit 10 is equivalent to the planar figure of the main unit 10 projected onto a plane orthogonal to the central axis of the main unit 10. An example of an ellipse in the planar shape of the main unit 10 is a circle. In addition, when the planar shape of the main unit 10 is an ellipse or a substantially ellipse, in the tube 80 (refer to Figure 1 ) in a state in which the main unit 10 is in contact with the main unit 10, the contact area between the main unit 10 and the tube 80 becomes narrower.

[0063] In addition, an example of the planar shape of the tank 70 and the device body 20 is a semi-ellipse or a substantially semi-ellipse when viewed from above. In this case, the planar shape of the device body 20 is the planar shape of the device body 20 in a state where the tank 70 is attached to the device body 20.

[0064] In addition, the three-dimensional shape of the main unit 10 is preferably, for example, a cylinder, a substantially cylinder, a frustum, a substantially frustum, a cone, a substantially cone, a bicone, a substantially bicone, an ellipsoid, or a substantially ellipsoid. In this case, the three-dimensional shape of the main unit 10 is the three-dimensional shape of the main unit 10 in a state where the tank 70 is mounted on the device body 20. Specifically, Figure 1 As shown, the three-dimensional shape of the main unit 10 is an elliptical cylinder as an example of a column. When the three-dimensional shape of the main unit 10 is the shape exemplified above, when the tube 80 is accommodated in the main unit 10, the contact area between the main unit 10 and the tube 80 becomes narrower. In addition, when the shape of the main unit 10 is a biconical body, a substantially biconical body, an ellipsoid, or a substantially ellipsoid, it is preferred that a support portion (not shown) is provided at the bottom of the main unit 10. Thus, the main unit 10 is stably provided on the installation surface by means of the support portion.

[0065] In addition, the terms indicating the planar shape and three-dimensional shape of the main unit 10 are divided into terms that do not include the prefix "approximately" and terms that include the prefix "approximately". Examples of terms that include "approximately" include approximately ellipse, approximately cylinder, approximately frustum, approximately cone, approximately bipyramid, approximately ellipsoid, and approximately semi-ellipse. A figure that is described using terms that do not include "approximately" is called a basic figure. A figure that is described using terms that include "approximately" is called a similar figure. A similar figure is related to a situation where the contact area between the main unit 10 and the tube 80 is narrowed, and can obtain the same degree of effect as when the planar shape or three-dimensional shape of the main unit 10 is a basic figure. Moreover, a similar figure includes a figure that can obtain a beneficial effect compared to a previous oral cleaning device in which the side of the main unit 10 is a plane.

[0066] As described above, the planar shape and three-dimensional shape of the main unit 10 of the oral cleaning device 1 according to the embodiment in a plan view are basic figures or similar figures. Therefore, the appearance of the oral cleaning device 1 can be improved.

[0067] In addition, the similar figures of the plane figure include various examples such as the first example, the second example, and the third example shown below. Specifically, the similar figure of the plane figure in the first example partially includes a straight line. The similar figure of the plane figure in the second example partially includes a curve having a center on the outside. The similar figure of the plane figure in the third example includes the features of both the first example and the second example.

[0068] Furthermore, the similar figures of the three-dimensional figure include various examples such as the first example, the second example, the third example, and the fourth example shown below. The similar figure of the three-dimensional figure in the first example partially includes a plane. The similar figure of the three-dimensional figure in the second example partially includes a convex portion. The similar figure of the three-dimensional figure in the third example partially includes a concave portion. The similar figure of the three-dimensional figure in the fourth example includes at least two of the features of the first to third examples.

[0069] like Figure 2 As shown, when the tank 70 (refer to Figure 1 ) is mounted on the device body 20, the upper surface 23A of the device body 20 and the flat upper surface 75A ( Figure 1Reference) are substantially located on the same plane. Therefore, the hand of the user, the cleaning unit 100, the tube 80, etc. moving around the main unit 10 are not easily caught in the main unit 10. In addition, the state of being substantially located on the same plane includes: a state in which no step is formed between the upper surface 23A of the device body 20 and the upper surface 75A of the tank 70, and a state in which a small step is formed. The small step refers to a step to the extent that the hand, the cleaning unit 100, the tube 80, etc. moving around the main unit 10 are not easily caught in the main unit 10. In other words, it is a step to the extent that no step is formed between the upper surface 23A of the device body 20 and the upper surface 75A of the tank 70, or a step of a size that is regarded as substantially the same as the extent to which no step is formed.

[0070] Next, use Figures 4 to 8 The mounting structure between the cleaning unit 100 and the device body 20 of the oral cleaning device 1 will be described.

[0071] Figure 4 It is a perspective view showing a state where the cleaning unit 100 is removed from the main body unit 10 . Figure 5 It is along Figure 2 A cross-sectional view of line 5-5. Figure 6 yes Figure 5 An enlarged view of part A. Figure 7 It is along Figure 2 A cross-sectional view of line 7-7. Figure 8 yes Figure 7 An enlarged view of part B.

[0072] like Figure 4 As shown, the cleaning unit 100 further includes a removal switch 107. When the nozzle 105 is removed from the second housing 101, the removal switch 107 is pressed. The removal switch 107 is provided on the back surface of the second housing 101 on the first end 103 side (the surface facing the main unit 10).

[0073] The oral cleaning device 1 also includes Figure 4 The elastic member 42 is indicated by a dot in the figure. The elastic member 42 is an example of an elastic material such as an elastomer that does not cause wear of the tube 80 even if it contacts the tube 80. The elastic member 42 is provided in the configuration portion 40 that is easy to contact the tube 80. Figure 7 ), the elastic member 42 absorbs the vibration of the tube 80. Therefore, it is less likely to cause wear due to the contact vibration between the tube 80 and the elastic member 42. In addition, compared with the case where the vibrating tube 80 contacts the portion not covered by the elastic member 42, the sound generated by the vibration is reduced.

[0074] The elastic member 42 includes a first elastic member 42A and a second elastic member 42B. The first elastic member 42A is provided, for example, at an edge 41B of the opening 41A of the recess 41 (see Figure 5 ). Specifically, the first elastic member 42A is provided, for example, on the entire edge 41B of the opening 41A. That is, the first elastic member 42A is provided on the edge 41B of the opening 41A which may come into intense frictional contact with the tube 80. Therefore, the occurrence of wear of the tube 80 can be further reduced. Moreover, compared with the case where the vibrating tube 80 comes into contact with the portion not covered by the first elastic member 42A, the sound generated by the vibration is further reduced.

[0075] The second elastic member 42B is provided, for example, on the inner circumferential surface 41C and the bottom surface 41D of the recessed portion 41. Specifically, the second elastic member 42B is provided, for example, on the entire inner circumferential surface 41C and the bottom surface 41D of the recessed portion 41. That is, the second elastic member 42B is provided on the inner circumferential surface 41C and the bottom surface 41D of the recessed portion 41 which are easy to contact with the tube 80. Therefore, the occurrence of wear of the tube 80 can be further suppressed. Moreover, compared with the case where the vibrating tube 80 contacts the portion not covered by the second elastic member 42B, the sound generated by the vibration is further reduced.

[0076] The oral cleaning device 1 further includes a coupling portion 110. The coupling portion 110 mounts the cleaning unit 100 on the main unit 10 in a detachable state. Specifically, the coupling portion 110 utilizes magnetic force to couple the main unit 10 and the cleaning unit 100. That is, when the cleaning unit 100 is close to the main unit 10, the cleaning unit 100 and the main unit 10 are coupled together by the magnetic force of the coupling portion 110.

[0077] The shell body 30 further includes a recess 34. The recess 34 is, for example, arranged in a manner of opening at the front side 30D of the shell body 30. The recess 34 has a shape corresponding to the shape of the outer contour of the cleaning unit 100. Specifically, a surface 34A of the recess 34 forms a space of the recess 34, for example, having a curved surface corresponding to the shape of the outer contour of the cleaning unit 100. At this time, in a state where the cleaning unit 100 and the main unit 10 are combined together using the combining portion 110, the cleaning unit 100 is arranged in the recess 34 of the main unit 10. Therefore, the posture of the cleaning unit 100 combined with the main unit 10 is determined by the combining portion 110.

[0078] The shell body 30 includes a first outer wall 30A and a second outer wall 30B. The first outer wall 30A and the second outer wall 30B constitute the outer contour of the shell body 30. The second outer wall 30B is, for example, provided in a part of the recess 34 of the shell body 30. The second outer wall 30B is configured to be surrounded by the first outer wall 30A. At this time, for the disassembly switch 107 provided on the back side of the second shell 101 of the cleaning unit 100, when the cleaning unit 100 is installed in the main unit 10, a gap is formed between the back side of the second shell 101 and the surface 34A of the recess 34. Figure 6 As shown, in order to reduce the formed gap, the second outer wall 30B is formed so as to bulge toward the outside of the case body 30 relative to the first outer wall 30A.

[0079] The coupling portion 110 includes a first coupling portion 111 and a second coupling portion 112. The first coupling portion 111 is provided on the front surface 30D of the housing body 30. Specifically, the first coupling portion 111 is provided on the surface 34A of the recess 34 of the housing body 30, for example. The first coupling portion 111 includes a magnet 111A, a yoke 111B (see Figure 6 ) and the first storage section 111C (see Figure 6 ). The magnet 111A is, for example, a neodymium magnet. The yoke 111B is provided on the side opposite to the second outer wall 30B of the housing body 30 with respect to the magnet 111A (see Figure 6 ). Thus, the yoke 111B causes the magnetic flux of the magnet 111A to act strongly on the second coupling portion 112. The yoke 111B is made of, for example, low-carbon steel. The first housing portion 111C is provided in the housing body 30 to house the magnet 111A and the yoke 111B. The first housing portion 111C includes a second outer wall 30B and an inner wall 30C disposed in the housing body 30 (see Figure 6 ).

[0080] The recess 34 of the shell body 30 is formed, for example, in a manner extending along the height direction of the main unit 10. The lower end portion 34B of the recess 34 is connected to the recess 41 of the configuration portion 40. The magnet 111A is arranged at a position on the inner surface (tank 70) side of the recess 34 in the second outer wall 30B of the shell body 30. Specifically, the magnet 111A is arranged on the inner surface side of the recess 34, for example, near the center of the height direction of the recess 34. Therefore, the force of the coupling portion 110 that combines the cleaning unit 100 with the main unit 10 acts evenly on the entire cleaning unit 100. As a result, the posture of the cleaning unit 100 combined with the main unit 10 is made more stable.

[0081] The second shell 101 of the cleaning unit 100 includes a first outer wall 101A and a second outer wall 101B. The first outer wall 101A and the second outer wall 101B constitute the outer profile of the second shell 101. The second outer wall 101B is, for example, disposed at a portion of the back side of the second shell 101. The second outer wall 101B is surrounded by the first outer wall 101A and is formed recessed toward the inner side of the second shell 101 relative to the first outer wall 30A. The second outer wall 101B of the second shell 101 is formed into a shape that matches the second outer wall 30B of the shell body 30. Thus, the magnetic force acting between the first coupling portion 111 and the second coupling portion 112 can be enhanced.

[0082] The second coupling portion 112 is provided in the cleaning unit 100. Specifically, the second coupling portion 112 is provided on the back side (the side opposite to the operation portion 106) near the middle portion in the height direction of the grip portion 102. The second coupling portion 112 includes a ferromagnetic body 112A and a second storage portion 112B (see Figure 6 ). The ferromagnetic body 112A is exemplified by a cold-rolled steel plate or the like. Therefore, when the cleaning unit 100 is removed from the main unit 10, the second coupling portion 112 does not attract the ferromagnetic body existing around the oral cleaning device 1. In addition, since the ferromagnetic body 112A constitutes the second coupling portion 112, the manufacturing cost can be reduced compared to the case where both the first coupling portion 111 and the second coupling portion 112 include magnets. The second storage portion 112B includes a second outer wall 101B and an inner wall 101D arranged in the second shell 101 (see Figure 6 ).

[0083] The first outer wall 30A of the housing body 30 includes a restriction portion 35. The restriction portion 35 is used to restrict the downward movement of the cleaning unit 100 mounted on the main unit 10 relative to the main unit 10. The restriction portion 35 is provided, for example, at the lower end portion 34B of the recess 34 of the housing body 30 (see Figure 4 ). At this time, the restriction portion 35 is covered by, for example, the elastic member 42.

[0084] The first outer wall 101A of the second housing 101 includes a contact portion 108. The contact portion 108 is, for example, provided on the back side of the second end portion 104 of the second housing 101. When the cleaning unit 100 moves downward relative to the main unit 10, the contact portion 108 contacts the limiting portion 35 of the first outer wall 30A of the housing body 30. That is, even when the cleaning unit 100 combined with the main unit 10 moves downward relative to the main unit 10 due to its own weight or the like, the contact portion 108 contacts the limiting portion 35. Thus, the height direction position of the cleaning unit 100 relative to the main unit 10 can be determined.

[0085] That is to say, Figure 5As shown, when the cleaning unit 100 is mounted on the main unit 10, the position of the cleaning unit 100 relative to the main unit 10 can be maintained by the coupling portion 110 and the limiting portion 35. At this time, when the cleaning unit 100 is held on the main unit 10 by the coupling portion 110 and the limiting portion 35, the first end surface 103A of the second housing 101 and the upper surface 23A of the device main body 20 are substantially arranged on the same plane.

[0086] Next, use Figure 6 The relationship between the first coupling portion 111 and the second coupling portion 112 will be described.

[0087] The magnet 111A of the first coupling portion 111 is fixed to the second outer wall 30B of the housing body 30 in the first housing portion 111C. The yoke 111B is attached to the magnet 111A. At this time, the thickness TA1 of the second outer wall 30B of the housing body 30 is thinner than the thickness TA2 of the portion of the first outer wall 30A of the housing body 30 around the second outer wall 30B in the height direction of the main unit 10. Therefore, the magnetic force acting between the first coupling portion 111 and the second coupling portion 112 can be strengthened.

[0088] The second outer wall 101B of the second shell 101 includes a thin-walled portion 101C. The ferromagnetic body 112A of the second coupling portion 112 is fixed to the thin-walled portion 101C of the second outer wall 101B in the second storage portion 112B. At this time, the thickness TB1 of the thin-walled portion 101C in the second outer wall 101B of the second shell 101 is thinner than the thickness TB2 of the portion of the first outer wall 101A of the second shell 101 around the second outer wall 101B in the height direction of the cleaning unit 100. Therefore, the magnetic force acting between the first coupling portion 111 and the second coupling portion 112 can be enhanced.

[0089] In addition, if Figure 7 As shown, the cleaning unit 100 is embedded in the recess 34 of the housing body 30. Thus, the cleaning unit 100 is installed in the main unit 10 in a state of being embedded about halfway, for example. Therefore, it is difficult to form a large convex portion in the planar shape of the oral cleaning device 1 when viewed from above. As a result, the appearance of the oral cleaning device 1 can be further improved.

[0090] In addition, if Figure 8As shown, the thickness TA1 of the second outer wall 30B of the housing body 30 is thinner than the thickness TA3 of the portion of the first outer wall 30A of the housing body 30 that is located around the second outer wall 30B in the width direction of the main unit 10. The thickness TB1 of the thin-walled portion 101C in the second outer wall 101B of the second housing 101 is thinner than the thickness TB3 of the portion of the first outer wall 101A of the second housing 101 that is located around the second outer wall 101B in the width direction of the cleaning unit 100. Thus, the magnetic force acting between the first coupling portion 111 and the second coupling portion 112 can be enhanced.

[0091] As described above, the cleaning unit 100 of the oral cleaning device 1 is mounted on the device body 20 using the magnetic force generated by the coupling portion 110 .

[0092] Next, regarding the structure of the main unit 10 of the oral cleaning device 1, use Fig. 9 , each component is explained separately.

[0093] Fig. 9 1 is an exploded perspective view showing a state where various components constituting the main unit 10 are exploded. Fig. 9 The main body unit 10 is partially omitted in the illustration.

[0094] First, the tank 70 includes a tank body 71, a bottom 72, and a drain port 73 (see Figure 7 )、Exit 74 (refer to Fig.12 ), a cover 75 and a handle 76. The tank body 71 is configured to store cleaning liquid. The cleaning liquid is injected into the tank body 71 from the opening 71A of the tank body 71. The bottom 72 constitutes the bottom surface of the tank body 71. The drain port 73 is used to discharge the cleaning liquid stored in the tank body 71. The amount of water discharged from the cleaning liquid can be adjusted by a float valve (not shown). The drain port 73 is provided on the inner surface of the bottom 72. The outlet 74 is provided on the outer surface of the bottom 72 in communication with the drain port 73. The cover 75 is configured to be removable relative to the tank body 71 and is used to open and close the opening 71A of the tank body 71. The cover 75 constitutes the upper surface 75A of the tank 70 when installed on the tank body 71. The handle 76 is provided near the opening 71A in the tank body 71.

[0095] Next, the shell body 30 includes a support portion 36. The support portion 36 is used to support the bottom 72 of the tank 70. When viewed from above, the shape of the support portion 36 has a shape similar to that of the tank 70. The support portion 36 includes a water supply port 36A. The water supply port 36A is configured to be connectable to the outlet 74 of the tank 70. That is, if the tank 70 is installed in the device body 20, the outlet 74 of the tank 70 is connected to the water supply port 36A of the support portion 36. The water supply port 36A is connected to the pump 31. Therefore, the cleaning liquid stored in the tank 70 is discharged from the drain port 73 and flows into the pump 31 through the outlet 74 and the water supply port 36A.

[0096] Next, the operation unit 50 further includes a panel 54. The panel 54 is mounted with the first to third buttons 51 to 53 and the display unit 60. The upper cover 23 of the first housing 21 includes a plurality of holes 23B, and the holes 23B are used to expose the first to third buttons 51 to 53 to the outside. The panel 54 includes a plurality of holes 54A for inserting the first to third buttons 51 to 53. After the panel 54 is fixed to the housing body 30 by means of a plurality of screws 55, the upper cover 23 is combined with the housing body 30.

[0097] In addition, the oral cleaning device 1 further includes a sealing structure 120. The sealing structure 120 is used to prevent water from flowing into the first housing 21. The sealing structure 120 is provided on the first housing 21. In addition, the protection level of the oral cleaning device 1 is, for example, IP (International Protection) X7.

[0098] The sealing structure 120 includes a first sealing portion 121 and a second sealing portion 122. The first sealing portion 121 is used to seal joints 131A, 131B, and 131C between the plurality of components 22 in the outer shell of the first housing 21. The first sealing portion 121 includes a first sealing member 121A, a second sealing member 121B, and a third sealing member 121C.

[0099] The first sealing member 121A is used to seal the joint 131A between the upper cover 23 and the housing body 30. The first sealing member 121A is formed of a material such as rubber. Specifically, the first sealing member 121A is clamped by the panel 54 of the operating unit 50 and the housing body 30, and the panel 54 is fixed to the housing body 30 by screws 55. Thus, the first sealing member 121A seals the joint 131A.

[0100] The second sealing member 121B is used to seal the joint 131B between the bottom cover 24 and the housing body 30. The second sealing member 121B is formed of a material such as rubber. Specifically, the second sealing member 121B is clamped by the bottom cover 24 and the housing body 30, and the bottom cover 24 is fixed to the housing body 30 using screws (not shown) or the like. Thus, the second sealing member 121B seals the joint 131B.

[0101] The third sealing member 121C is used to seal the joint 131C between the configuration portion 40 and the housing body 30. The third sealing member 121C is formed of a material such as rubber. Specifically, the third sealing member 121C is clamped by the configuration portion 40 and the housing body 30, and the configuration portion 40 is fixed by a screw 43 (see Figure 4 ) is fixed to the housing body 30. Thus, the third sealing member 121C seals the joint 131C.

[0102] The second sealing portion 122 is used to seal the joints 132A, 132B, and 132C between the first housing 21 and the operation portion 50. The second sealing portion 122 includes a first sealing member 122A, a second sealing member 122B, and a third sealing member 122C.

[0103] The first sealing member 122A is used to seal the joint 132A between the upper cover 23 and the first button 51. The first sealing member 122A is formed of a material such as rubber. The first sealing member 122A is provided to seal the gap between the first button 51 inserted into the hole 54A of the panel 54 and the panel 54 (see Fig.10 Specifically, the first sealing member 122A is installed so as to cover the gap between the first button 51 and the panel 54, and the upper cover 23 is coupled to the housing body 30. Thus, the first sealing member 122A seals the joint 132A.

[0104] Similarly, the second sealing member 122B is used to seal the joint 132B between the upper cover 23 and the second button 52. The third sealing member 122C is used to seal the joint 132C between the upper cover 23 and the third button 53. In addition, the structures of the second sealing member 122B and the third sealing member 122C are substantially the same as the structure of the first sealing member 122A.

[0105] In addition, if Fig.10 As shown, the sealing structure 120 further includes a sealing member 61. The sealing member 61 is used to seal the joint 62 between the upper cover 23 and the display unit 60. The sealing member 61 is formed of a material such as rubber. The sealing member 61 covers the display unit 60, for example, in a manner that seals the display unit 60. Specifically, the sealing member 61 is installed in a manner that covers the display unit 60, and the upper cover 23 is combined with the housing body 30. Thus, the sealing member 61 seals the joint 62. In addition, the sealing member 61 may also constitute a part of the second sealing portion 122.

[0106] In addition, if Fig.11As shown, the oral cleaning device 1 further includes a connection portion 81. The connection portion 81 is a portion for connecting the main unit 10 and the tube 80. Specifically, the connection portion 81 is disposed in the recess 41 of the configuration portion 40, and constitutes a connection portion between the housing body 30 and the tube 80.

[0107] The sealing structure 120 further includes a third sealing portion 123. The third sealing portion 123 is used to seal the joint 133 between the connecting portion 81 and the main unit 10. The third sealing portion 123 is composed of an elastic member 123A such as an O-ring. The elastic member 123A is provided in the configuration portion 40 and is used to seal the connecting portion 81. Specifically, the third sealing portion 123 is clamped by the connecting portion 81 and the configuration portion 40, and the connecting portion 81 is fixed to the housing body 30 via the configuration portion 40 by means of a screw 82. Thus, the third sealing portion 123 seals the joint 133.

[0108] The oral cleaning device 1 further includes two elastic members 123B and 123C such as O-rings. The two elastic members 123B and 123C are used to suppress water leakage from the flow path 31A connecting the pump 31 and the tube 80 into the main unit 10 .

[0109] The oral cleaning device 1 also includes a pump storage portion 37. The pump storage portion 37 is used to store the pump 31. The pump storage portion 37 is, for example, arranged in the support portion 36 of the housing body 30. The pump storage portion 37 is composed of the outer wall 36B of the support portion 36. The pump storage portion 37 includes a pump support portion 37A for supporting the pump 31. The pump storage portion 37 and the pump support portion 37A constitute a part of the housing body 30. The pump storage portion 37 and the pump support portion 37A are formed of a resin material such as ABS, like other parts of the housing body 30. The pump support portion 37A includes a rib (not shown) provided on the inner surface of the outer wall 36B. The rib fixes the pump 31, for example, by a coupling component. The coupling component includes a fitting structure formed on the pump 31 and the rib, respectively. The coupling component illustrates, for example, a plurality of screws 38.

[0110] In addition, if Fig.12 As shown, the sealing structure 120 further includes a fourth sealing portion 124. The fourth sealing portion 124 is used to seal the water supply port 36A of the housing body 30. The fourth sealing portion 124 is, for example, an elastic member 124A such as an O-ring. The fourth sealing portion 124 is embedded in the water supply port 36A. Thus, the fourth sealing portion 124 seals the water supply port 36A. Therefore, even when the tank 70 is removed from the device body 20, it is difficult for water to enter the main unit 10.

[0111] The oral cleaning device 1 further includes an elastic member 124B. The elastic member 124B is formed of, for example, an O-ring, and seals between the outlet 74 of the tank 70 and the water supply port 36A of the housing body 30. The elastic member 124B is fixed around the outlet 74 of the tank 70. Thus, when the tank 70 is mounted on the device body 20, the elastic member 124B suppresses the cleaning liquid sprayed from the outlet 74 of the tank 70 from leaking to the outside.

[0112] like Figure 5 As shown, the sealing structure 120 further includes a fifth sealing portion 125. The fifth sealing portion 125 is composed of Figure 5 The waterproof layer 125A is shown by the double-dashed line. The waterproof layer 125A covers the power circuit 33. The waterproof layer 125A is composed of a resin layer such as polyurethane resin formed by potting, for example. Thereby, the waterproof property of the power circuit 33 can be further improved.

[0113] In addition, if Fig.13 As shown, the device body 20 further includes a wiring passage 25. The wiring passage 25 forms a passage for holding the power cord PC led out from the first shell 21. The wiring passage 25 is provided on the bottom surface 24A of the bottom cover 24. In the present embodiment, the wiring passage 25 is configured to be forked into two branches, for example. The wiring passage 25 includes a first outlet 25A and a second outlet 25B. The first outlet 25A and the second outlet 25B are portions for leading the power cord PC out of the device body 20. The first outlet 25A and the second outlet 25B are configured in a manner that has a line-symmetric relationship with respect to a center line in the width direction of the device body 20. The first outlet 25A and the second outlet 25B are, for example, provided on the side of the bottom cover 24. In addition, at Fig.13 , an example is shown in which the power cord PC is led out from the first outlet 25A. Thus, the installation of the oral cleaning device 1 is not easily restricted by the power cord PC.

[0114] In addition, if Fig.14 As shown in FIG. 1 , the device body 20 further includes a lead-out portion 26 . The lead-out portion 26 is a portion for leading the power cord PC out from the first housing 21 . The lead-out portion 26 is provided on the bottom surface 24A of the bottom cover 24 .

[0115] The sealing structure 120 also includes a sixth sealing portion 126. The sixth sealing portion 126 is used to seal the portion between the bottom cover 24 and the power cord PC in the lead-out portion 26. The sixth sealing portion 126 includes a bushing 126A and a sealing member 126B. The bushing 126A is provided on the power cord PC in a manner that allows it to be inserted into the lead-out portion 26. The bushing 126A is, for example, integrally formed with the power cord PC. The sealing member 126B is, for example, composed of an O-ring. Specifically, the sealing member 126B is clamped by the bushing 126A and the lead-out portion 26, and the bushing 126A is fixed to the bottom cover 24 by means of a screw 126C. Thus, the sealing member 126B seals between the bushing 126A and the lead-out portion 26. In addition, since the sealing structure 120 includes the first sealing portion 121 to the sixth sealing portion 126, it meets the IPX7 rating. Therefore, even when the main unit 10 is immersed in water, it is difficult for water to enter the main unit 10. As a result, the user can clean the main unit 10 efficiently.

[0116] The various components constituting the main unit 10 of the oral cleaning device 1 are configured as described above.

[0117] Below, refer to Figure 1 , an example of the usage procedure of the oral cleaning device 1 is described.

[0118] The oral cleaning device 1 is used by the user, for example, in the following manner.

[0119] In the first step, the user injects a predetermined amount of cleaning liquid into the tank 70 and mounts the tank 70 on the device body 20 .

[0120] In step 2, the user operates the first button 51 of the main unit 10 to turn on the power of the oral cleaning device 1. As a result, the pump 31 starts to drive (see Figure 7 ).

[0121] In step 3, the user removes the cleaning unit 100 from the main unit 10 and directs the spray port 105A of the nozzle 105 toward the oral cavity.

[0122] In step 4, the user operates operation unit 106 of cleaning unit 100 to eject cleaning liquid from ejection port 105A into the oral cavity. Thus, the oral cavity is cleaned with the cleaning liquid ejected from ejection port 105A.

[0123] In step 5, the user interrupts or stops the cleaning of the oral cavity by the oral cleaning device 1. Furthermore, the user installs the cleaning unit 100 to the main unit 10. In addition, when the cleaning of the oral cavity by the oral cleaning device 1 is interrupted in step 5, the user repeats steps 3 to 5 to continue cleaning the oral cavity.

[0124] At this time, while the cleaning liquid is being ejected from the ejection port 105A, the cleaning liquid ejected from the pump 31 passes through the tube 80. Therefore, the tube 80 vibrates due to the influence of the water pressure of the cleaning liquid flowing through the tube 80. As described above, the vibration magnitude of the tube 80 depends on the magnitude of the water pressure of the cleaning liquid ejected from the pump 31. Moreover, the vibrating tube 80 contacts the main unit 10.

[0125] Therefore, the oral cleaning device 1 of this embodiment is provided with an elastic member 42 at the arrangement portion 40 which is easy to contact with the tube 80. The elastic member 42 is used to absorb the vibration of the tube 80. Therefore, it is not easy to wear the tube 80. In addition, the sound generated by the contact between the tube 80 and the arrangement portion 40 is reduced.

[0126] In addition, for the oral cleaning device 1 of this embodiment, the planar shape of the main unit 10 when viewed from above is circular, and the three-dimensional shape of the main unit 10 is cylindrical. Therefore, even if the tube 80 contacts the main unit 10, the contact area between the main unit 10 and the tube 80 becomes narrow. Therefore, even if the pump 31 is driven in a state where the tube 80 contacts the main unit 10, the tube 80 is not easily worn.

[0127] In addition, for the oral cleaning device 1 of the present embodiment, when the cleaning unit 100 is mounted on the main unit 10, when the cleaning unit 100 is brought close to the main unit 10, the cleaning unit 100 is coupled to the main unit 10 by the magnetic force of the coupling portion 110. Therefore, even if the cleaning unit 100 is not correctly aligned with respect to the main unit 10, the cleaning unit 100 can be mounted at an appropriate position of the main unit 10.

[0128] (Variation Example)

[0129] The description of the embodiments is an illustration of possible forms of the oral cleaning device of the present invention and does not limit the forms of the oral cleaning device. In addition to the embodiments, the present invention can take the following modified examples of the embodiments and a combination of at least two non-contradictory modified examples.

[0130] For example, the structure of the sixth sealing portion 126 can be changed arbitrarily. Fig.15 As shown, in the first example, the bushing 126A may be ultrasonically welded, pressed or crimped to the lead-out portion 26. Thus, the space between the bushing 126A and the lead-out portion 26 is sealed. In the second example, the power cord PC may be integrally formed with the bottom cover 24. Thus, the space between the bottom cover 24 and the power cord PC is sealed.

[0131] also, Fig. 9The structure of the sealing structure 120 shown can be changed arbitrarily. In the first example, the first sealing portion 121 can take a form in which at least one of the first sealing member 121A, the second sealing member 121B and the third sealing member 121C is omitted. In the second example, the second sealing portion 122 can take a form in which at least one of the first sealing member 122A, the second sealing member 122B and the third sealing member 122C is omitted. In the third example, Figure 5 , Fig. 9 , Fig.11 as well as Fig.12 The sealing structure 120 shown may have a form in which at least one of the first sealing portion 121 , the second sealing portion 122 , the third sealing portion 123 , the fourth sealing portion 124 , the fifth sealing portion 125 , and the sixth sealing portion 126 is omitted.

[0132] also, Figure 3 The planar shape of the main body unit 10 in the top view shown can be changed arbitrarily. For example, the planar shape of the main body unit 10 in the top view may also include a corner.

[0133] also, Figure 1 The relationship between the upper surface 23A of the device body 20 and the upper surface 75A of the tank 70 shown in the figure can be changed arbitrarily. In the first example, the upper surface 23A of the device body 20 can also be higher than the upper surface 75A of the tank 70. In the second example, the upper surface 23A of the device body 20 can also be lower than the upper surface 75A of the tank 70. In the third example, it can also be configured so that the upper surface 75A of the tank 70 constitutes the entire upper surface of the main unit 10, and a part of the upper surface 75A of the tank 70 covers the upper surface 23A of the device body 20. In the fourth example, it can also be configured so that the upper surface 23A of the device body 20 constitutes the entire upper surface of the main unit 10, and a part of the upper surface 23A of the device body 20 covers the upper surface 75A of the tank 70. In the fifth example, the tank 70 can also be detachably provided on the upper surface 23A of the device body 20. Furthermore, the relationship between the upper surface 23A of the device body 20 and the upper surface 75A of the tank 70 indicates the relationship in a state where the tank 70 is attached to the device body 20 .

[0134] also, Figure 2 The relationship between the first end face 103A of the second housing 101 and the upper surface 23A of the device body 20 shown in the figure can be changed arbitrarily. In the first example, the first end face 103A can also be higher than the upper surface 23A of the device body 20. In the second example, the first end face 103A can also be lower than the upper surface 23A of the device body 20. In addition, the relationship between the first end face 103A of the second housing 101 and the upper surface 23A of the device body 20 represents the relationship in the state where the cleaning unit 100 is installed in the main unit 10.

[0135] also, Figure 4 The relationship between the recessed portion 34 of the housing body 30 and the recessed portion 41 of the arrangement portion 40 shown in the figure can be changed arbitrarily. For example, the recessed portion 34 of the housing body 30 can also be set at a position offset from the recessed portion 41 of the arrangement portion 40 in the width direction of the main unit 10. In this case, when the cleaning unit 100 is installed in the main unit 10, the second end 104 of the second housing 101 does not face the arrangement portion 40. In addition, in the structure in which the second end 104 of the second housing 101 does not face the arrangement portion 40, a structure in which the length of the second housing 101 is shortened is included.

[0136] also, Figure 4 and Figure 5 The structure of the elastic member 42 shown can be changed arbitrarily. In the first example, the first elastic member 42A can also be provided at a part of the edge 41B of the opening 41A. In the second example, the second elastic member 42B can also be provided at a part of the inner peripheral surface 41C of the recess 41. In the third example, the second elastic member 42B can also be provided at a part of the bottom surface 41D of the recess 41. In the fourth example, the elastic member 42 can be provided in a manner in which at least one of the first elastic member 42A and the second elastic member 42B is omitted.

[0137] also, Figure 4 The first outer wall 30A of the housing body 30 shown in the figure may be such that the restricting portion 35 is omitted. In this case, when the cleaning unit 100 is mounted on the main unit 10, the position of the cleaning unit 100 relative to the main unit 10 is maintained only by the magnetic force of the coupling portion 110. Therefore, the first outer wall 101A of the second housing 101 may be such that the contact portion 108 is omitted.

[0138] In addition, Figure 4 In the recess 34 shown, whether the magnet 111A is disposed near the center in the height direction of the recess 34 can be arbitrarily changed. In the first example, the magnet 111A may be disposed on the upper side in the height direction of the main unit 10 in the recess 34. In the second example, the magnet 111A may be disposed on the lower side in the height direction of the main unit 10 in the recess 34.

[0139] also, Figure 4 and Figure 6 Whether the magnet 111A shown is disposed in the first receiving portion 111C can be changed arbitrarily. For example, the magnet 111A can also be disposed on the outer surface side of the recess 34. In this case, the first receiving portion 111C can be omitted from the first coupling portion 111. In addition, the housing body 30 can be configured in a manner in which the recess 34 is omitted.

[0140] also, Figure 6 Whether the ferromagnetic body 112A is disposed in the second housing portion 112B can be arbitrarily changed. For example, the ferromagnetic body 112A can also be disposed on the outer surface side of the second housing 101. In this case, the second housing portion 112B can be omitted from the second coupling portion 112.

[0141] also, Figure 6 and Figure 8 The relationship between the thickness TA1 of the second outer wall 30B of the housing body 30 and the thicknesses TA2 and TA3 of the portion of the first outer wall 30A of the housing body 30 around the second outer wall 30B can be arbitrarily changed. In the first example, the thickness TA1 may be substantially the same as at least one of the thicknesses TA2 and TA3. In the second example, the thickness TA1 may be thicker than at least one of the thicknesses TA2 and TA3.

[0142] also, Figure 6 and Figure 8 The relationship between the thickness TB1 of the thin-walled portion 101C in the second outer wall 101B of the second shell 101 shown in the figure and the thicknesses TB2 and TB3 of the portion of the first outer wall 101A of the second shell 101 around the second outer wall 101B can be arbitrarily changed. In the first example, the thickness TB1 can also be substantially the same thickness as at least one of the thicknesses TB2 and TB3. In the second example, the thickness TB1 can also be thicker than at least one of the thicknesses TB2 and TB3.

[0143] also, Figure 6 The structure of the coupling part 110 shown can be changed arbitrarily. In the first example, the first coupling part 111 may include a ferromagnetic body, and the second coupling part 112 may include a magnet. In this case, the manufacturing cost is reduced compared to the case where both the first coupling part 111 and the second coupling part 112 include magnets. In the second example, the first coupling part 111 may include a magnet 111A, and the second coupling part 112 may include a magnet that attracts the magnet 111A. In this case, the magnet included in the coupling part 110 may also be an electromagnet. In the third example, the coupling part 110 may also be a structure that physically combines the main unit 10 and the cleaning unit 100. The physical combination is, for example, that one of the first coupling part 111 and the second coupling part 112 includes a hook, and the other of the first coupling part 111 and the second coupling part 112 includes a hook that can be combined with the hook. That is, the oral cleaning device 1 can adopt a method in which the coupling part 110 of the present embodiment is omitted.

[0144] also, Figure 4Whether the operation unit 50 shown is provided on the upper surface 23A of the device body 20 can be changed arbitrarily. For example, the operation unit 50 can also be provided on the side of the device body 20.

[0145] also, Figure 4 Whether the display unit 60 is provided on the upper surface 23A of the device body 20 can be changed arbitrarily. For example, the display unit 60 can also be provided on the side of the device body 20. Moreover, the oral cleaning device 1 can be provided in a form in which the display unit 60 is omitted.

[0146] In addition, the oral cleaning device 200 of the modified example may also have a Fig.16 The oral cleaning device 200 of the modified example is different from the oral cleaning device 1 of the embodiment in the aspects described below, but has substantially the same structure as the oral cleaning device 1 of the embodiment in other aspects. In addition, the same reference numerals are given to the common structures of the oral cleaning device 200 and the oral cleaning device 1 of the embodiment, and part or all of the description of the structure is omitted.

[0147] Fig.16 It is a perspective view showing an example of an oral cleaning device 200 according to a modified example.

[0148] like Fig.16 As shown, the oral cleaning device 200 includes a main unit 210 , a tube 80 , a cleaning unit 220 , and a power cord PC. The main unit 210 includes a device body 211 , a support stand 212 , a tank 213 , and an operation unit 214 .

[0149] The configurations of the device body 211 , the tank 213 , the operating unit 214 , and the cleaning unit 220 are substantially the same as the configurations of the device body 20 , the tank 70 , the operating unit 50 , and the cleaning unit 100 of the above-described embodiment.

[0150] The tank 213 is detachably mounted on the upper portion of the device body 211. The support table 212 is a stand for mounting the cleaning unit 220, and is integrated with the device body 211. For example, when the cleaning unit 220 is mounted on the support table 212, the cleaning unit 220 and the main body 210 are coupled by magnetic force.

[0151] The main unit 210 further includes a placement section 215. The placement section 215 is provided in the main unit 210. When the cleaning unit 220 is mounted on the main unit 210, the tube 80 is placed in the placement section 215. For example, the placement section 215 is composed of a portion surrounded by the cleaning unit 220 placed on the support table 212, the side surface 211A of the device main body 211, the upper surface 212A of the support table 212, and the side surface 213A of the tank 213.

[0152] The oral cleaning device 200 further includes an elastic member 230. The elastic member 230 is disposed on the Fig.16 The elastic member 230 is made of an elastic material such as an elastomer that does not easily cause abrasion of the tube 80 even when in contact with the tube 80. The elastic member 230 is provided in the arrangement portion 215.

[0153] The elastic member 230 includes a first elastic member 231, a second elastic member 232, and a third elastic member 233. The first elastic member 231 is disposed on the side 211A of the device body 211. The second elastic member 232 is disposed on the upper surface 212A of the support platform 212. The third elastic member 233 is disposed on the side 213A of the tank 213. In other words, the elastic member 230 is disposed on the configuration portion 215 that is easy to contact with the tube 80. Therefore, the elastic member 230 can absorb the vibration of the tube 80 generated when the oral cleaning device 200 is in operation. Thus, the occurrence of wear of the tube 80 can be reduced. In addition, the elastic member 230 can be in a manner in which one or both of the first elastic member 231, the second elastic member 232, and the third elastic member 233 are omitted.

[0154] The oral cleaning device 200 further includes a connection portion 81 and an elastic member 240. The connection portion 81 is provided at the arrangement portion 215. An example of the elastic member 240 is an O-ring. The elastic member 240 is provided at the arrangement portion 215 to seal the connection portion 81. Thus, water can be prevented from entering the main unit 210 from the connection portion 81.

Claims

1. An oral cleaning device, wherein: The oral cleaning device comprises: a main unit including a pump for spraying the cleaning fluid; a pipe connected to the main unit in such a manner that the sprayed cleaning liquid flows; a cleaning unit connected to the pipe in a manner capable of spraying the cleaning liquid; as well as A combining part, which combines the main unit and the cleaning unit by magnetic force, The main body unit includes a limiting portion for limiting the downward movement of the cleaning unit mounted on the main body unit relative to the main body unit. The main body unit includes a recessed portion on a side surface thereof, The surface of the recess has a curved surface that forms a space of the recess and corresponds to the shape of the outer contour of the cleaning unit. The limiting portion protrudes from the surface of the recessed portion, The cleaning unit comprises a contact portion, The contact portion is formed by a recess, When the cleaning unit attached to the main unit moves downward relative to the main unit, the contact portion formed by the recessed portion comes into contact with the restriction portion protruding from the surface.

2. The oral cleaning device according to claim 1, wherein: The coupling part includes a first coupling part provided on the main unit and a second coupling part provided on the cleaning unit. One of the first coupling portion and the second coupling portion includes a magnet, The other of the first coupling portion and the second coupling portion includes a magnet or a ferromagnetic body.

3. The oral cleaning device according to claim 2, wherein: The main body unit includes a first outer wall and a second outer wall, wherein the first outer wall constitutes an outer shell, and the second outer wall constitutes an outer shell together with the first outer wall and is provided with a magnet or a ferromagnetic body on its inner surface side. The thickness of the second outer wall is thinner than the thickness of a portion of the first outer wall that is located around the second outer wall.

4. The oral cleaning device according to claim 2, wherein: The cleaning unit includes a first outer wall and a second outer wall, wherein the first outer wall constitutes an outer profile, and the second outer wall together with the first outer wall constitutes an outer profile and is provided with a magnet or a ferromagnetic body on its inner surface side. The thickness of the second outer wall is thinner than the thickness of a portion of the first outer wall that is located around the second outer wall.

5. The oral cleaning device according to claim 2, wherein: The magnet or the ferromagnetic body is provided on the inner surface side of the recessed portion.

6. The oral cleaning device according to claim 5, wherein: The recess is formed so as to extend in the height direction of the main body unit. The magnet or the ferromagnetic body is provided on the inner surface side of the recessed portion at the center in the height direction of the main body unit.

7. The oral cleaning device according to any one of claims 1 to 6, wherein: The cleaning unit includes: a housing including a gripping portion; and a nozzle disposed on the housing in a manner capable of spraying the cleaning liquid. The housing includes: a first end portion on which the nozzle is mounted; and a first end surface formed at the first end portion, wherein when the cleaning unit is mounted on the main unit, the first end surface and an upper surface of the main unit are substantially arranged on the same plane.

8. The oral cleaning device according to claim 7, wherein: The main body unit further includes a placement portion provided on the main body unit so as to be able to place the tube when the cleaning unit is mounted on the main body unit. The housing is configured such that, in a state in which the cleaning unit is attached to the main body unit, a second end portion opposite to the first end portion faces the placement portion.

9. The oral cleaning device according to any one of claims 1 to 6, wherein: The restricting portion is provided below the coupling portion.

10. The oral cleaning device according to claim 5, wherein: The limiting portion is provided at a lower end portion of the recessed portion.

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