JP2022168160A - Oral cavity washing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an oral cavity washing device whose washing unit is easy to attach to a body unit.

SOLUTION: An oral cavity washing device 1 comprises: a body unit 10 including a pump for discharging a washing fluid; a tube 80 connected with the body unit 10 so as to flow the discharged washing fluid; and a washing unit 100 connected with the tube 80 so as to be able to discharge the washing fluid. The oral cavity washing device 1 further comprises a connection part 110 which interconnects the body unit 10 and the washing unit 100 magnetically.

SELECTED DRAWING: Figure 4

COPYRIGHT: (C)2023,JPO&INPIT

Description

TECHNICAL FIELD The present disclosure relates to an oral cleaning device that cleanses the oral cavity with cleaning liquid.

As an example of a conventional oral cavity cleaning device, a body unit including a tank for storing a cleaning liquid and a pump for discharging the cleaning liquid, a tube connected to the body unit so that the cleaning liquid discharged by the pump flows, and a cleaning liquid supplied from the tube Oral cleaning devices are well known that include a cleaning unit that dispenses cleaning fluid. Patent Literature 1 discloses an example of a conventional mouthwash device. This oral cavity cleaning device further includes a structure for attaching and detaching the cleaning unit to and from the main unit. The user can remove the cleaning unit from the main unit when using the cleaning unit, and attach the cleaning unit to the main unit when not using the cleaning unit.

JP 2015-217174 A

According to the conventional oral cavity cleaning device, when the cleaning unit is brought into contact with the main unit in order to attach the cleaning unit to the main unit, the position of the cleaning unit slightly deviates from the position suitable for attachment. It may not be attached to the external unit.

An oral cavity cleaning apparatus according to the present disclosure includes a main unit including a pump that discharges a cleaning liquid, a tube that is connected to the main unit so that the discharged cleaning liquid flows, and a tube that is connected to the tube so that the cleaning liquid can be discharged. a cleaning unit, a coupling part that couples the main body unit and the cleaning unit by magnetic force, and an arrangement part provided in the main body unit so that the tube can be arranged, wherein the tube includes a curled portion, and the curled The portion is arranged in the arrangement portion so as to be located closer to the main body unit than the contact portion between the main body unit and the washing unit when the washing unit is attached to the main body unit.

According to the oral cavity cleaning device of the present disclosure, the cleaning unit can be easily attached to the main unit.

1 is a perspective view of an oral cavity cleaning device according to an embodiment; FIG. 2 is a front view of the oral cavity cleaning device of FIG. 1; FIG. FIG. 2 is a plan view of the main unit of FIG. 1; FIG. 4 is a perspective view showing a state in which the cleaning unit is removed from the main unit; FIG. 3 is a cross-sectional view taken along line D5-D5 in FIG. 2; FIG. 6 is an enlarged view of part A in FIG. 5 ; FIG. 3 is a cross-sectional view taken along line D7-D7 in FIG. 2; The enlarged view of the B section of FIG. FIG. 2 is an exploded perspective view of the main unit of FIG. 1; FIG. 4 is a cross-sectional view taken along line D10-D10 in FIG. 3; FIG. 3 is a cross-sectional view taken along line D11-D11 in FIG. 2; FIG. 3 is a cross-sectional view taken along line D12-D12 in FIG. 2; FIG. 2 is a bottom view of the main unit of FIG. 1; FIG. 14 is a cross-sectional view taken along line D14-D14 in FIG. 13; Sectional drawing which shows the 6th seal|sticker part of a modification. The perspective view which shows an example of the mouthwash apparatus of a modification.

(An example of a form that an oral cleaning device can take)
[1] An oral cavity cleaning device according to the present disclosure includes a main unit including a pump that discharges a cleaning liquid, a tube that is connected to the main unit so that the discharged cleaning liquid flows, and the tube that allows the cleaning liquid to be discharged. and a coupling portion that couples the body unit and the cleaning unit by magnetic force. When the washing unit is brought close to the main body unit, the washing unit is connected to the main body unit by the magnetic force of the connecting portion. Therefore, the cleaning unit can be attached to the main unit without having to precisely match the position of the cleaning unit with respect to the main unit as in the conventional oral cavity cleaning device.

[2] According to one example of the oral cavity cleaning device, the connecting portion includes a first connecting portion provided on the main body unit and a second connecting portion provided on the washing unit, and the first connecting portion and One of the second coupling parts includes a magnet, and the other of the first coupling part and the second coupling part includes a magnet or a ferromagnetic material. Therefore, the connecting portion can be easily constructed.

[3] According to one example of the mouthwash device, the first coupling portion includes the magnet, and the second coupling portion includes the ferromagnetic material. Therefore, when the cleaning unit is detached from the main body unit, the second coupling portion does not attract the ferromagnetic material existing around the oral cavity cleaning apparatus.

[4] According to one example of the oral cavity cleaning device, the first coupling part includes a first accommodation part that accommodates the magnet or the ferromagnetic material. Therefore, the magnet or ferromagnetic material is less likely to become dirty.
[5] According to one example of the oral cavity cleaning device, the body unit further includes a first case that houses the pump, the first case includes a first outer wall forming an outer shell of the body unit, and the first 1 accommodation part includes the 2nd outer wall which comprises the outer shell of the said main body unit with the 1st outer wall of the said main body unit. Therefore, the oral cavity cleaning device can be miniaturized.

[6] According to one example of the oral cavity cleaning device, the thickness of the second outer wall of the main body unit is thinner than the thickness of the portion surrounding the second outer wall of the main body unit in the first outer wall of the main body unit. Therefore, the magnetic force acting between the first coupling portion and the second coupling portion can be strengthened.

[7] According to one example of the oral cavity cleaning device, the second coupling part includes a second storage part that stores the magnet or the ferromagnetic material, the cleaning unit includes a second case that includes a grip part, The second case includes a first outer wall forming an outer shell of the cleaning unit, the second containing section includes a second outer wall forming an outer shell of the cleaning unit together with the first outer wall of the cleaning unit, and the cleaning unit the thickness of the second outer wall of the washing unit is less than the thickness of the portion of the first outer wall of the washing unit surrounding the second outer wall of the washing unit. Therefore, the magnetic force acting between the first coupling portion and the second coupling portion can be strengthened.

[8] According to one example of the oral cavity cleaning device, the second outer wall of the main body unit includes a concave portion corresponding to the shape of the outer shell of the cleaning unit, and the magnet or the ferromagnetic material is located on the second outer wall of the main body unit. provided on the inner surface side of the recess. Since the washing unit is arranged in the concave portion of the main body unit in a state in which the washing unit is connected to the main unit by the connecting portion, the posture of the washing unit connected to the main unit by the connecting portion is determined.

[9] According to one example of the oral cavity cleaning device, the recess is formed to extend in the height direction of the main unit, and the magnet or the ferromagnetic body is positioned on the inner surface side of the recess and extends in the height of the main unit. It is provided in the center of the direction. For this reason, the force of the connecting portion that connects the cleaning unit to the main unit acts on the entire cleaning unit in a well-balanced manner, and the posture of the cleaning unit coupled to the main unit is further stabilized.

[10] According to one example of the oral cavity cleaning device, the first outer wall of the main body unit includes a restricting portion that restricts the cleaning unit attached to the main body unit from moving downward with respect to the main body unit. include. Therefore, even if the washing unit coupled to the main body unit moves downward due to its own weight or the like, it can be positioned in the height direction with respect to the main body unit by coming into contact with the regulating portion.

[11] According to one example of the oral cavity cleaning device, the cleaning unit includes a second case including a grip portion, and a nozzle provided in the second case so as to discharge the cleaning liquid. is provided on the grip portion. Therefore, the size of the nozzle can be reduced.

[12] According to one example of the oral cavity cleaning device, the second case includes a first end to which the nozzle is attached, and a first end face formed at the first end, and the cleaning unit The first end surface is configured to be arranged on substantially the same plane as the upper surface of the main unit when attached to the main unit. Therefore, the positional relationship between the first end surface and the upper surface of the main body unit can be used as one of the marks when attaching the cleaning unit to the main body unit.

[13] According to one example of the oral cavity cleaning device, the main body unit further includes an arrangement part provided in the main body unit so that the tube can be arranged in a state in which the washing unit is attached to the main body unit, The placement portion includes a recess provided in the main unit. Therefore, the tube can be accommodated in the arrangement portion in a state in which the cleaning unit is attached to the main unit.

[14] According to one example of the oral cavity cleaning device, the second case has a second end opposite to the first end when the cleaning unit is attached to the main body unit. configured to face Therefore, when removing the cleaning unit from the main unit, it is easy to grasp the second end, and the cleaning unit can be easily removed from the main unit.

(Embodiment)
FIG. 1 shows the appearance of an oral cavity cleaning device 1. As shown in FIG. The oral cavity cleaning device 1 is used for cleaning the oral cavity, and is mainly used for cleaning teeth and gums in the oral cavity. The oral cavity cleaning device 1 is installed and used on a flat installation surface such as a washstand (not shown). The oral cavity cleaning device 1 is driven by power supplied from an external power source (not shown) such as a commercial power source, and discharges cleaning liquid into the oral cavity. An example of a cleaning liquid is tap water mixed with a cleaning agent, or tap water.

The oral cavity cleaning device 1 includes a body unit 10, a tube 80, a cleaning unit 100, and a power cord PC. Main unit 10 includes device main body 20 and tank 70 . The function of tank 70 is to store cleaning fluid. The tank 70 is detachably attached to the apparatus main body 20, for example. The device main body 20 houses various elements for driving the oral cavity cleaning device 1 . The device body 20 includes a first case 21, a pump 31, a motor 32, and a power supply circuit 33 (see FIG. 7). Pump 31 , motor 32 , and power supply circuit 33 are housed within first case 21 . The function of the pump 31 is to discharge the cleaning liquid stored in the tank 70 . The function of motor 32 is to drive pump 31 . The function of power supply circuit 33 is to supply power to motor 32 . The power cord PC is electrically connected to the power circuit 33 . The power of the external power supply is supplied to the power supply circuit 33 by connecting the plug PG of the power cord PC to the external power supply.

The tube 80 is connected to the main unit 10 so that the cleaning liquid discharged by the pump 31 flows. The cleaning unit 100 is connected to the tube 80 so as to discharge the cleaning liquid. The cleaning unit 100 is attachable to and detachable from the main unit 10 . FIG. 1 shows a state in which the cleaning unit 100 is attached to the main unit 10. As shown in FIG. When the cleaning unit 100 is used for cleaning the oral cavity, the cleaning unit 100 is removed from the main unit 10 .

A first case 21 of the device main body 20 is configured by connecting a plurality of parts 22 . An example of the material forming the first case 21 is ABS (Acrylonitrile Butadiene Styrene) resin. The multiple parts 22 include a top lid 23 , a case body 30 , a bottom lid 24 and a placement portion 40 . Each part 22 is a molded product that is individually made of a resin material. Top lid 23 , bottom lid 24 , and arrangement portion 40 are each coupled to case body 30 . The upper lid 23 constitutes a flat upper surface 23A of the apparatus main body 20. As shown in FIG.

The tube 80 is, for example, a curled tube that can be stretched. The type of material constituting the tube 80, the diameter of the tube 80, and the wall thickness of the tube 80 are determined, for example, by the ease of movement of the cleaning unit 100 when moving the cleaning unit 100 around the main unit 10, and the thickness of the tube 80. It is preferably determined from the viewpoint of durability. An example of the material forming the tube 80 is a highly flexible resin material. An example of this resin material is EVA (Ethylene Vinyl Acetate Copolymer) resin. An example of a preferred range for the diameter of tube 80 is 3.0-5.0 mm. In one example, tube 80 has a diameter of 4.0 mm. A preferred range for the wall thickness of the tube 80 is 0.5 to 1.5 mm. In one example, the wall thickness of tube 80 is 1.0 mm.

Cleaning unit 100 includes second case 101 and nozzle 105 . A nozzle 105 is provided in the second case 101 so as to discharge the cleaning liquid. An example of the material forming the second case 101 is ABS resin. Second case 101 includes grip portion 102 . The grip portion 102 is configured so that the user can grip it with one hand. The second case 101 includes a first end 103 and a second end 104 . First end 103 includes first end surface 103A. 103 A of 1st end surfaces are comprised so that the nozzle 105 can be attached. The second end 104 is the end of the second case 101 opposite to the first end 103 . Second end 104 includes a second end surface 104A. The tube 80 is inserted into the second case 101 from the second end face 104A, for example, and is connected to the inlet of the cleaning liquid passage provided inside the second case 101 . Nozzle 105 is connected to the outlet of the passage.

Cleaning unit 100 further includes an operating portion 106 . The operating portion 106 is provided on the grip portion 102 . The function of the operation unit 106 is to open and close a water stop valve (not shown) provided inside the second case 101 . When the stop valve is opened by operating the operation unit 106 , the cleaning liquid flowing through the tube 80 is discharged from the discharge port 105</b>A of the nozzle 105 . When the stop valve is closed by operating the operation unit 106 , the cleaning liquid is not discharged from the discharge port 105A of the nozzle 105 .

Main unit 10 further includes an operation section 50 and a display section 60 . The function of the operation unit 50 is mainly to select the operation of the main unit 10 related to the discharge of the cleaning liquid. The operation unit 50 is provided on the upper surface 23A of the apparatus main body 20, for example. Operation unit 50 includes a plurality of buttons. The plurality of buttons includes first button 51 , second button 52 and third button 53 . The function of the first button 51 is to switch the power of the main unit 10 on and off. The function of the second button 52 is to increase the water pressure of the cleaning liquid discharged from the pump 31 . The function of the third button 53 is to weaken the water pressure of the cleaning liquid discharged from the pump 31 . The water pressure of the cleaning liquid discharged from the pump 31 is adjusted within the discharge pressure range of the pump 31 by operating the second button 52 and the third button 53 . An example of a preferable range for the discharge pressure of the pump 31 is 3.0 to 8.0 kgf/cm2. The water pressure of the cleaning liquid discharged from the discharge port 105 A of the nozzle 105 changes according to the water pressure of the cleaning liquid discharged from the pump 31 .

The maximum discharge pressure of pump 31 is preferably greater than a predetermined maximum discharge pressure. It is preferable that the predetermined maximum ejection pressure is determined, for example, in relation to the force with which the washing liquid ejected from the ejection port 105A of the nozzle 105 cleans the oral cavity. A preferred range for the predetermined maximum discharge pressure is a range of 4 kgf/cm2 or more. An example of a more preferable range for the predetermined maximum discharge pressure is a range of 6 kgf/cm2 or more. An example of a preferred predetermined maximum discharge pressure is 8 kgf/cm2.

The function of the display unit 60 is to display various kinds of information associated with the operation by the operation unit 50. FIG. The display unit 60 includes, for example, a plurality of LED (Light Emitting Diode) lamps provided on the upper surface 23A of the device main body 20 . The lighting state of each LED lamp changes according to the water pressure of the cleaning liquid adjusted by the second button 52 and the third button 53 .

The placement part 40 is coupled to the case main body 30 so that the tube 80 can be placed when the cleaning unit 100 is attached to the main unit 10 . Placement portion 40 includes recess 41 . The recess 41 is configured to accommodate the tube 80 . The recessed portion 41 includes an opening 41A that opens to the front surface 30D of the case body 30. As shown in FIG.

FIG. 2 is a front view of the oral cavity cleaning device 1 with the cleaning unit 100 attached to the main unit 10 and the nozzle 105 removed from the second case 101. FIG. The second case 101 of the cleaning unit 100 is configured such that the second end 104 faces the placement section 40 when the cleaning unit 100 is attached to the main unit 10 . Therefore, when removing the cleaning unit 100 from the main unit 10 , the second end 104 can be easily grasped, and the cleaning unit 100 can be easily removed from the main unit 10 .

The second case 101 is configured such that the first end face 103A is substantially flush with the upper surface 23A of the apparatus main body 20 when the cleaning unit 100 is attached to the main body unit 10 . Therefore, the positional relationship between the first end face 103A and the upper surface 23A of the apparatus main body 20 can be used as one of the marks when the cleaning unit 100 is attached to the main body unit 10. FIG. The state in which they are arranged on substantially the same plane includes a state in which no step is formed between the first end surface 103A and the upper surface 23A of the apparatus main body 20, and a state in which the first end surface 103A and the upper surface 23A of the apparatus main body 20 are arranged. Including the state in which a small step is formed between them. A small step prevents a hand moving around the main body unit 10 from getting caught on the apparatus main body 20 and the cleaning unit 100. A step is not formed between the upper surface 23A of the apparatus main body 20 and the first end surface 103A of the cleaning unit 100. The step is of a size that provides the same effect as the case, or an effect that can be regarded as substantially the same.

The two-dimensional shape of the main unit 10 in plan view is preferably an ellipse or substantially an ellipse. The two-dimensional shape of the main unit 10 is the two-dimensional shape of the main unit 10 with the tank 70 attached to the apparatus main body 20, and the two-dimensional shape of the main unit 10 projected onto a plane perpendicular to the central axis of the main unit 10. Equal to shape. FIG. 3 is a plan view of the oral cavity cleaning device 1 with the cleaning unit 100 omitted. An example of the two-dimensional shape of the main unit 10 in plan view is a circle, which is an example of an ellipse. When the two-dimensional shape of the main unit 10 is an ellipse or a substantially ellipse, the contact area between the main unit 10 and the tube 80 becomes narrow when the tube 80 (see FIG. 1) is in contact with the main unit 10 . An example of the two-dimensional shape of the tank 70 and the apparatus main body 20 in plan view is a semi-ellipse or substantially a semi-ellipse. The two-dimensional shape of the device main body 20 in plan view is the two-dimensional shape of the device main body 20 in a state where the tank 70 is attached to the device main body 20 .

The three-dimensional shape of the main unit 10 may be a cylinder, approximately cylinder, frustum, approximately frustum, cone, approximately cone, double cone, approximately double cone, ellipsoid, or approximately ellipsoid. preferable. The three-dimensional shape of the main unit 10 is the three-dimensional shape of the main unit 10 with the tank 70 attached to the apparatus main body 20 . As shown in FIG. 1, in one example, the three-dimensional shape of main unit 10 is an elliptical cylinder, which is an example of a cylinder. When the three-dimensional shape of the main body unit 10 is the above-exemplified shape, the contact area between the main body unit 10 and the tube 80 becomes narrow when the tube 80 is in contact with the main body unit 10 . When the shape of the main body unit 10 is a bipyramid, a substantially bipyramid, an ellipsoid, or a substantially ellipsoid, a supporting portion (not shown) for stably setting the main body unit 10 on the installation surface is provided in the main body. It is preferably provided at the bottom of 10 .

The terms representing the two-dimensional shape and the three-dimensional shape of the main body unit 10 are classified into terms that do not include the prefix abbreviation and terms that include the prefix abbreviation. Terms that include abbreviations are roughly elliptical, roughly cylindrical, roughly frustum, roughly cone, roughly bipyramidal, roughly ellipsoidal, and roughly half-elliptical. A figure described by a term without an abbreviation is called a basic figure. Figures described by terms including abbreviations are called similar figures. The similar figure is a figure that can obtain the same effect as when the two-dimensional shape or three-dimensional shape of the main unit 10 is the basic figure, and the main body, in terms of narrowing the contact area between the main unit 10 and the tube 80. It includes a graphic that provides a significant advantage over conventional oral rinsing devices in which the sides of the unit 10 are flat. According to the oral cavity cleaning device 1, since the two-dimensional shape and three-dimensional shape of the main body unit 10 in plan view are basic figures or similar figures, designability is enhanced.

Similar figures of two-dimensional figures include various examples. In the first example, the analogous figure of the two-dimensional figure partially includes straight lines. In a second example, the analogous figure of the two-dimensional figure partially includes curves centered on the outside. In the third example, the analogous figure of the two-dimensional figure contains features of both the first and second examples.

Similar figures of three-dimensional figures include various examples. In the first example, the analogous figure of the three-dimensional figure partially includes a plane. In the second example, a figure similar to a three-dimensional figure partially includes a convex portion. In the third example, the analogous figure of the three-dimensional figure partially includes the concave portion. In the fourth example, the analogous figure of the three-dimensional figure includes at least two features of each of the first to third examples.

The upper surface 23A of the apparatus main body 20 is positioned substantially on the same plane as the flat upper surface 75A of the tank 70, for example, when the tank 70 is attached to the apparatus main body 20. As shown in FIG. Therefore, hands moving around the main unit 10 , the washing unit 100 , the tube 80 , etc. are less likely to get caught on the main unit 10 .

The state in which the upper surface 23A of the apparatus main body 20 and the upper surface 75A of the tank 70 are positioned substantially on the same plane is the state in which no step is formed between the upper surface 23A of the apparatus main body 20 and the upper surface 75A of the tank 70, and the state in which the upper surface 23A of the apparatus main body 20 and the upper surface 75A of the tank 70 are positioned substantially on the same plane. This includes a state in which a small step is formed between The small level difference between the upper surface 23A of the apparatus main body 20 and the upper surface 75A of the tank 70 prevents the hand moving around the main unit 10, the washing unit 100, the tube 80, etc. from getting caught on the main unit 10. The step is of a size that provides the same or substantially the same effect as when no step is formed on the substrate.

FIG. 4 shows a state in which the cleaning unit 100 is removed from the main unit 10. As shown in FIG. Cleaning unit 100 further includes removal switch 107 . The function of the removal switch 107 is to remove the nozzle 105 from the second case 101 . The removal switch 107 is provided, for example, on the rear surface of the first end portion 103 of the second case 101 .

The mouthwash device 1 further includes an elastic member 42 . The dotted portion in FIG. 4 indicates the elastic member 42 . An example of the material forming the elastic member 42 is an elastic material that does not easily wear the tube 80 even when it comes into contact with the tube 80 . An example of this elastic material is an elastomer. The elastic member 42 is provided on the arrangement portion 40 . Since the elastic member 42 is provided in the arrangement portion 40 with which the tube 80 is likely to come into contact, when the tube 80 arranged in the arrangement portion 40 vibrates due to the driving of the pump 31 (see FIG. 7), the vibration of the tube 80 is absorbed by the elastic member. absorbed by 42. Therefore, the tube 80 is less likely to wear out. Furthermore, the sound associated with vibration is smaller than when the vibrating tube 80 contacts a portion not covered by the elastic member 42 .

The elastic member 42 includes a first elastic member 42A and a second elastic member 42B. The first elastic member 42A is provided at the edge 41B (see FIG. 5) of the opening 41A of the recess 41, for example. In one example, the first elastic member 42A is provided over the entire edge 41B of the opening 41A. Since the first elastic member 42A is provided at the edge 41B of the opening 41A, which is likely to strongly rub against the tube 80, the tube 80 is more resistant to abrasion. Furthermore, the sound accompanying the vibration is smaller than when the vibrating tube 80 is in contact with the portion not covered by the first elastic member 42A.

The second elastic member 42B is provided on the inner peripheral surface 41C and the bottom surface 41D of the recess 41, for example. In one example, the second elastic member 42B is provided over the entire inner peripheral surface 41C and the bottom surface 41D of the recess 41 . Since the second elastic member 42B is provided on the inner peripheral surface 41C and the bottom surface 41D of the recess 41, which are likely to come into contact with the tube 80, the tube 80 is more resistant to abrasion. Furthermore, the sound accompanying the vibration is smaller than when the vibrating tube 80 is in contact with the portion not covered by the second elastic member 42B.

Oral rinse device 1 further includes coupling portion 110 . The function of the coupling part 110 is to attach the washing unit 100 to the main unit 10 in a detachable manner. In one example, the coupling portion 110 couples the main unit 10 and the cleaning unit 100 by magnetic force. Therefore, when cleaning unit 100 is brought close to main unit 10 , cleaning unit 100 is coupled with main unit 10 by the magnetic force of coupling portion 110 .

Case body 30 further includes recess 34 . The recessed portion 34 opens to the front surface 30D of the case main body 30, for example. The concave portion 34 has a shape corresponding to the shape of the outer shell of the cleaning unit 100 . In one example, the surface 34A of the recess 34 forming the space of the recess 34 is a curved surface corresponding to the shape of the outer shell of the cleaning unit 100. As shown in FIG. Since the cleaning unit 100 is arranged in the recess 34 of the main unit 10 in a state where the cleaning unit 100 is coupled to the main body unit 10 by the coupling portion 110, the posture of the cleaning unit 100 coupled to the main unit 10 by the coupling portion 110 is is determined.

The case body 30 includes a first outer wall 30A and a second outer wall 30B. The first outer wall 30A constitutes the outer shell of the case main body 30. As shown in FIG. The second outer wall 30B constitutes the outer shell of the case main body 30 together with the first outer wall 30A. The second outer wall 30B is provided in part of the recess 34 of the case main body 30, for example. The second outer wall 30B is surrounded by the first outer wall 30A. A removal switch 107 provided on the back surface of the second case 101 of the cleaning unit 100 creates a gap between the back surface of the second case 101 and the surface 34A of the recess 34 when the cleaning unit 100 is attached to the main unit 10. occurs. The second outer wall 30B rises outward from the case main body 30 with respect to the first outer wall 30A so as to reduce the gap therebetween.

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 30</b>D of the case body 30 . In one example, the first coupling portion 111 is provided on the surface 34A of the recess 34 of the case body 30 . The first coupling portion 111 includes a magnet 111A, a yoke 111B (see FIG. 6), and a first accommodating portion 111C (see FIG. 6). An example of magnet 111A is a neodymium magnet. The yoke 111B is provided on the side opposite to the second outer wall 30B of the case body 30 with respect to the magnet 111A so that the magnetic flux of the magnet 111A strongly acts on the second coupling portion 112 (see FIG. 6). An example of material for the yoke 111B is low carbon steel. The first accommodating portion 111C is provided in the case main body 30 so as to accommodate the magnet 111A and the yoke 111B. The first accommodating portion 111C includes a second outer wall 30B and an inner wall 30C arranged within the case body 30 (see FIG. 6).

The recess 34 of the case body 30 is formed to extend in the height direction of the body unit 10, for example. A lower end portion 34B of the concave portion 34 is connected to the concave portion 41 of the placement portion 40 . The magnet 111A is provided on the inner surface side of the recess 34 of the second outer wall 30B of the case main body 30 . In one example, the magnet 111A is provided at the center of the main unit 10 in the height direction on the inner surface side of the recess 34 . Therefore, the force of the connecting portion 110 connecting the cleaning unit 100 to the main unit 10 acts on the entire cleaning unit 100 in a well-balanced manner, and the posture of the cleaning unit 100 coupled with the main unit 10 is further stabilized.

The second case 101 includes a first outer wall 101A and a second outer wall 101B. 101 A of 1st outer walls comprise the outer shell of the 2nd case 101. As shown in FIG. The second outer wall 101B constitutes the outline of the second case 101 together with the first outer wall 101A. The second outer wall 101B is provided on a portion of the back surface of the second case 101, for example. The second outer wall 101B is surrounded by the first outer wall 101A and recessed inside the second case 101 with respect to the first outer wall 30A. The shape of the second outer wall 101B of the second case 101 fits the shape of the second outer wall 30B of the case main body 30 . Therefore, the magnetic force acting between the first coupling portion 111 and the second coupling portion 112 can be strengthened.

The second coupling part 112 is installed in the cleaning unit 100 . In one example, the second coupling portion 112 is provided on the rear surface of the middle portion of the grip portion 102 in the height direction. The second coupling portion 112 includes a ferromagnetic body 112A and a second receiving portion 112B (see FIG. 6). An example of the ferromagnetic material 112A is a cold-rolled steel plate. Therefore, when the cleaning unit 100 is detached from the main unit 10 , the second coupling portion 112 does not attract the ferromagnetic material present around the oral cavity cleaning device 1 . Further, since the ferromagnetic material 112A constitutes the second coupling portion 112, the manufacturing cost is reduced compared to when both the first coupling portion 111 and the second coupling portion 112 include magnets. The second housing portion 112B includes a second outer wall 101B and an inner wall 101D arranged inside the second case 101 (see FIG. 6).

First outer wall 30A of case main body 30 includes restricting portion 35 . The function of the restricting portion 35 is to restrict downward movement of the cleaning unit 100 attached to the main unit 10 with respect to the main unit 10 . The restricting portion 35 is provided, for example, at the lower end portion 34B of the concave portion 34 of the case body 30 . In the illustrated example, the restricting portion 35 is covered with an elastic member 42 .

First outer wall 101A of second case 101 includes contact portion 108 . The contact portion 108 is provided, for example, on the back surface of the second end portion 104 of the second case 101 . The contact portion 108 comes into contact with the regulation portion 35 when the cleaning unit 100 moves downward with respect to the main unit 10 . Therefore, even if the cleaning unit 100 coupled to the main body unit 10 moves downward due to its own weight or the like, the contact portion 108 comes into contact with the restricting portion 35 and thus the height direction relative to the main body unit 10 is lowered. position can be determined.

As shown in FIG. 5 , when the cleaning unit 100 is attached to the main unit 10 , its position relative to the main unit 10 is held by the connecting portion 110 and the restricting portion 35 . In a state in which cleaning unit 100 is held in position relative to main body unit 10 by connecting portion 110 and restricting portion 35, first end surface 103A of second case 101 is arranged substantially on the same plane as upper surface 23A of apparatus main body 20. be done.

FIG. 6 shows the relationship between the first coupling portion 111 and the second coupling portion 112. As shown in FIG. The magnet 111A of the first coupling portion 111 is fixed to the second outer wall 30B of the case main body 30 inside the first accommodating portion 111C. Yoke 111B is attached to magnet 111A. The thickness TA1 of the second outer wall 30B of the case main body 30 is thinner than the thickness TA2 of the portion of the first outer wall 30A of the case main body 30 surrounding 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.

A second outer wall 101B of the second case 101 includes a thin portion 101C. The ferromagnetic material 112A of the second coupling portion 112 is fixed to the thin portion 101C of the second outer wall 101B inside the second accommodating portion 112B. The thickness TB1 of the thin portion 101C of the second outer wall 101B of the second case 101 is greater than the thickness TB2 of the portion surrounding the second outer wall 101B of the first outer wall 101A of the second case 101 in the height direction of the cleaning unit 100. too thin. Therefore, the magnetic force acting between the first coupling portion 111 and the second coupling portion 112 can be strengthened.

As shown in FIG. 7, the cleaning unit 100 is attached to the body unit 10 by being fitted into the recess 34 of the case body 30. Therefore, the two-dimensional shape of the oral cavity cleaning device 1 in plan view has a large protrusion. difficult to form. Therefore, the designability of the oral cavity cleaning device 1 is further enhanced.

As shown in FIG. 8, the thickness TA1 of the second outer wall 30B of the case main body 30 is greater than the thickness TA3 of the portion of the first outer wall 30A of the case main body 30 surrounding the second outer wall 30B in the width direction of the main unit 10. too thin. The thickness TB1 of the thin portion 101C of the second outer wall 101B of the second case 101 is greater than the thickness TB3 of the portion surrounding the second outer wall 101B of the first outer wall 101A of the second case 101 in the width direction of the cleaning unit 100. thin.

FIG. 9 shows a state in which various elements constituting the main unit 10 are disassembled. In this figure, part of the main unit 10 is omitted.
Tank 70 includes tank body 71 , bottom 72 , drain 73 (see FIG. 7), outlet 74 (see FIG. 12), lid 75 and handle 76 . The tank main body 71 is provided so as to be able to store the cleaning liquid. The cleaning liquid is poured from the opening 71A of the tank body 71. As shown in FIG. The bottom portion 72 constitutes the bottom surface of the tank body 71 . The function of the drain port 73 is to drain the cleaning liquid stored in the tank body 71 . A float valve (not shown) regulates the amount of cleaning liquid that is drained. A drain port 73 is provided on the inner surface of the bottom portion 72 . An outlet 74 is provided on the outer surface of the bottom portion 72 so as to communicate with the drain port 73 . The lid 75 is detachable from the tank body 71 and opens and closes the opening 71A of the tank body 71 . The lid 75 forms an upper surface 75A of the tank 70 when attached to the tank body 71 . The handle 76 is provided near the opening 71A inside the tank body 71 .

Case body 30 includes a support portion 36 . The function of support 36 is to support bottom 72 of tank 70 . The shape of the support portion 36 in plan view is similar to the shape of the tank 70 in plan view. The support portion 36 includes a water supply port 36A. The water supply port 36A is connectable with the outlet 74 of the tank 70. As shown in FIG. By attaching the tank 70 to the device main 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 with the pump 31 . Therefore, the cleaning liquid stored in the tank 70 is drained from the drain port 73 and flows into the pump 31 through the outlet 74 and the water supply port 36A.

Operation unit 50 further includes a panel 54 . Each of the buttons 51 to 53 and the display section 60 are attached to the panel 54 . The upper lid 23 of the first case 21 includes a plurality of holes 23B for exposing the buttons 51-53 to the outside. Panel 54 includes a plurality of holes 54A through which respective buttons 51-53 are inserted. The top cover 23 is coupled with the case body 30 after the panel 54 is fixed to the case body 30 with a plurality of screws 55 .

Oral rinse device 1 further includes a sealing structure 120 . The function of the seal structure 120 is to prevent water from entering the first case 21 . A seal structure 120 is provided on the first case 21 . The protection grade of the mouthwash device 1 is, for example, IP (International Protection) X7.

The seal structure 120 includes a first seal portion 121 and a second seal portion 122 . The first sealing portion 121 seals the seams 131A to 131C between the parts 22 on the outer shell of the first case 21 . The first seal portion 121 includes a first seal member 121A, a second seal member 121B, and a third seal member 121C.

The function of the first sealing member 121A is to seal the seam 131A between the upper lid 23 and the case body 30. As shown in FIG. An example of the material of the first sealing member 121A is rubber. The first sealing member 121A is sandwiched between the panel 54 of the operation unit 50 and the case body 30, and the panel 54 is fixed to the case body 30 by the screws 55, whereby the seam 131A between the upper lid 23 and the case body 30 is the first seal member 121A. It is sealed by the sealing member 121A.

The function of the second sealing member 121B is to seal the seam 131B between the bottom lid 24 and the case body 30. As shown in FIG. An example of the material of the second seal member 121B is rubber. The second seal member 121B is sandwiched between the bottom lid 24 and the case body 30, and the bottom lid 24 is fixed to the case body 30 with screws (not shown) or the like, thereby forming a seam 131B between the bottom lid 24 and the case body 30. is sealed by the second sealing member 121B.

The function of the third sealing member 121C is to seal the seam 131C between the arrangement portion 40 and the case body 30. As shown in FIG. An example of the material of the third sealing member 121C is rubber. The third sealing member 121C is sandwiched between the placement portion 40 and the case body 30, and the placement portion 40 is fixed to the case body 30 with screws 43 (see FIG. 4), thereby forming a seam between the placement portion 40 and the case body 30. 131C is sealed by the third sealing member 121C.

The second seal portion 122 seals seams 132A to 132C between the first case 21 and the operation portion 50. As shown in FIG. The second seal portion 122 includes a first seal member 122A, a second seal member 122B, and a third seal member 122C.

The function of the first sealing member 122A is to seal the seam 132A between the top cover 23 and the first button 51. As shown in FIG. An example of the material of the first seal member 122A is rubber. The first sealing member 122A is provided, for example, to seal between the first button 51 inserted into the hole 54A of the panel 54 and the panel 54 (see FIG. 10). A first seal member 122A is attached so as to cover the gap between the first button 51 and the panel 54, and the upper lid 23 is coupled to the case body 30, thereby forming a seam 132A between the upper lid 23 and the first button 51. It is sealed by the first sealing member 122A. The function of the second sealing member 122B is to seal the seam 132B between the top lid 23 and the second button 52. As shown in FIG. The function of the third sealing member 122C is to seal the seam 132C between the top cover 23 and the third button 53. As shown in FIG. The configurations of the second sealing member 122B and the third sealing member 122C are substantially the same as the configuration of the first sealing member 122A.

As shown in FIG. 10, seal structure 120 further includes seal member 61 . The function of the sealing member 61 is to seal the seam 62 between the upper lid 23 and the display section 60 . An example of the material of the sealing member 61 is rubber. The sealing member 61 covers the display section 60 so as to seal the display section 60, for example. A seal member 61 is attached so as to cover the display portion 60 , and the top lid 23 is coupled to the case body 30 , so that a seam 62 between the top lid 23 and the display portion 60 is sealed by the seal member 61 . The seal member 61 may form part of the second seal portion 122 .

As shown in FIG. 11 , the mouthwash device 1 further includes a connector 81 . The connection portion 81 is a portion that connects the main unit 10 and the tube 80 . In one example, the connecting portion 81 is provided inside the recessed portion 41 of the placement portion 40 and constitutes a connecting portion between the case body 30 and the tube 80 .

Seal structure 120 further includes a third seal portion 123 . The function of the third seal portion 123 is to seal the joint 133 between the connection portion 81 and the main unit 10 . The third seal portion 123 is, for example, an elastic member 123A. An example of the elastic member 123A is an O-ring. The elastic member 123A is provided in the arrangement portion 40 so as to seal the connecting portion 81. As shown in FIG. Third seal portion 123 is sandwiched between connection portion 81 and placement portion 40 , and connection portion 81 is fixed to case body 30 via placement portion 40 with screw 82 , thereby connecting connection portion 81 and main unit 10 . The seam 133 is sealed by the third sealing portion 123 . Oral cleaning device 1 further includes two elastic members 123B and 123C that suppress water leakage into main unit 10 from channel 31A connecting pump 31 and tube 80 . An example of the elastic members 123B, 123C is an O-ring.

Oral rinse device 1 further includes a pump housing 37 . The function of the pump accommodation part 37 is to accommodate the pump 31 . The pump accommodating portion 37 is provided inside the support portion 36 of the case main body 30, for example. The pump accommodating portion 37 is constituted by the outer wall 36B of the support portion 36. As shown in FIG. The pump housing portion 37 includes a pump support portion 37A that supports the pump 31 . The pump housing portion 37 and the pump support portion 37A are part of the case body 30 and are made of a resin material like the other parts of the case body 30 . The pump support portion 37A includes ribs (not shown) provided on the inner surface of the outer wall 36B. The pump 31 is fixed to the ribs, for example by means of coupling means. The coupling means includes mating structures formed on each of the pump 31 and ribs. One example of coupling means is a plurality of screws 38 .

As shown in FIG. 12, seal structure 120 further includes a fourth seal portion 124 . The function of the fourth seal portion 124 is to seal the water supply port 36A of the case body 30. As shown in FIG. The fourth seal portion 124 is an elastic member 124A. An example of the elastic member 124A is an O-ring. The water supply port 36A is sealed by the fourth seal portion 124 by fitting the fourth seal portion 124 into the water supply port 36A. Therefore, even when the tank 70 is removed from the device body 20, water is less likely to enter the body unit 10. - 特許庁

The mouthwash device 1 further includes an elastic member 124B that seals between the outlet 74 of the tank 70 and the water supply port 36A of the case body 30 . An example of the elastic member 124B is an O-ring. The elastic member 124B is fixed around the outlet 74 of the tank 70. As shown in FIG. When the tank 70 is attached to the apparatus main body 20, the elastic member 124B prevents the cleaning liquid discharged from the outlet 74 of the tank 70 from leaking to the outside.

Seal structure 120 further includes a fifth seal portion 125 (see FIG. 5). The fifth seal portion 125 constitutes a waterproof layer 125A. The function of the waterproof layer 125A is to cover the power circuit 33. As shown in FIG. The waterproof layer 125A is a resin layer formed by potting, for example. In one example, the resin forming the waterproof layer 125A includes urethane resin. Therefore, the waterproofness of the power supply circuit 33 is further enhanced. A two-dot chain line in FIG. 5 indicates the waterproof layer 125A.

As shown in FIG. 13, device body 20 further includes wiring passage 25 . The wiring passage 25 is a passage for holding the power cord PC pulled out from inside the first case 21 . The wiring passage 25 is provided on the bottom surface 24A of the bottom lid 24. As shown in FIG. In one example, the wiring passage 25 is bifurcated. The wire passageway 25 includes a first outlet 25A and a second outlet 25B. Each outlet 25A, 25B is a portion from which the power cord PC is pulled out from the main body 20 of the apparatus. The first outlet 25A and the second outlet 25B have a line-symmetrical relationship with respect to the widthwise center line of the device body 20 . Each outlet 25A, 25B is provided on the side of the bottom lid 24, for example. In the illustrated example, the power cord PC is pulled out from the first outlet 25A. Therefore, installation of the oral cavity cleaning device 1 is less likely to be restricted by the power cord PC.

As shown in FIG. 14, the device body 20 further includes a drawer portion 26. As shown in FIG. The lead-out portion 26 is a portion from which the power cord PC is led out from inside the first case 21 . The drawer portion 26 is provided on the bottom surface 24A of the bottom lid 24 .

Seal structure 120 further includes a sixth seal portion 126 . The sixth seal portion 126 seals between the bottom cover 24 and the power cord PC in the drawer portion 26 . Sixth seal portion 126 includes bushing 126A and seal member 126B. A bushing 126A is provided on the power cord PC so that it can be inserted into the drawer 26. As shown in FIG. In one example, bushing 126A is integrally molded with power cord PC. The function of the sealing member 126B is to seal between the bushing 126A and the drawer 26. As shown in FIG. An example of the sealing member 126B is an O-ring. Seal member 126B is sandwiched between bushing 126A and drawer portion 26, and bushing 126A is fixed to bottom lid 24 by screw 126C, whereby bushing 126A and drawer portion 26 are sealed by seal member 126B. The seal structure 120 meets the IPX7 rating by including the first seal portion 121 to the sixth seal portion 126 . Therefore, even when the body unit 10 is immersed in water, water hardly enters the body unit 10, and the body unit 10 can be washed efficiently.

An example of the procedure for using the mouthwash device 1 will be described with reference to FIG.
The oral cavity cleaning device 1 is used by a user, for example, as follows. In the first procedure, a predetermined amount of cleaning liquid is poured into the tank 70 and the tank 70 is attached to the device body 20 . In the second procedure, by operating the first button 51 of the main unit 10, the power of the oral cavity cleaning device 1 is set to ON. By turning on the power of the oral cavity cleaning apparatus 1, the pump 31 (see FIG. 7) starts to drive. In the third procedure, the cleaning unit 100 is removed from the main unit 10, and the ejection port 105A of the nozzle 105 is directed toward the oral cavity. In the fourth procedure, the cleaning liquid is ejected from the ejection port 105A by operating the operation portion 106 of the cleaning unit 100 . Therefore, the inside of the oral cavity is washed with the cleaning liquid discharged from the discharge port 105A. In the fifth procedure, the washing unit 100 is attached to the main unit 10 by interrupting or ending the washing of the oral cavity by the oral cavity washing device 1 . When the cleaning of the oral cavity by the oral cavity cleaning device 1 is interrupted in the fifth procedure, the third to fifth procedures are repeated.

Since the cleaning liquid discharged from the pump 31 passes through the tube 80 in the process of discharging the cleaning liquid from the discharge port 105A, the tube 80 vibrates under the influence of the water pressure of the cleaning liquid flowing through the tube 80 and the like. The magnitude of vibration of the tube 80 depends on the water pressure of the cleaning liquid discharged from the pump 31 . Therefore, the vibrating tube 80 comes into contact with the main unit 10 . On the other hand, since the elastic member 42 is provided in the placement portion 40 with which the tube 80 is likely to come into contact with the oral cavity cleaning device 1 , the vibration of the tube 80 is absorbed by the elastic member 42 . Therefore, the tube 80 is less likely to wear out. Also, the sound generated by the contact between the tube 80 and the arrangement portion 40 is reduced. Furthermore, since the two-dimensional shape of the main unit 10 in plan view is a circle and the three-dimensional shape of the main unit 10 is a cylinder, even if the tube 80 comes into contact with the main unit 10, the main unit 10 and the tube 80 are The contact area becomes narrower. Therefore, even when the pump 31 is driven while the tube 80 is in contact with the main unit 10, the tube 80 is less likely to be worn.

When the cleaning unit 100 is attached to the main body unit 10 , the cleaning unit 100 is coupled to the main body unit 10 by the magnetic force of the coupling portion 110 by bringing the cleaning unit 100 closer to the main body unit 10 . Therefore, the cleaning unit 100 can be attached to the main unit 10 even if the position of the cleaning unit 100 with respect to the main unit 10 is not precisely aligned.

(Modification)
The descriptions of the embodiments are illustrative of the forms that the mouthwash device according to the present disclosure can take, and are not intended to limit the forms. In addition to the embodiment, the present disclosure can take a form in which, for example, modifications of the embodiments shown below and at least two modifications not contradicting each other are combined.

- The configuration of the sixth seal portion 126 can be arbitrarily changed. In a first example, as shown in FIG. 15, the bushing 126A is ultrasonically welded, press-fitted, or pressure-welded to the lead-out portion 26 to seal between the bushing 126A and the lead-out portion 26. FIG. In the second example, the power cord PC is integrally molded with the bottom lid 24 to seal between the bottom lid 24 and the power cord PC.

- The structure of the seal structure 120 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 a second example, the second seal portion 122 can take a form in which at least one of the first seal member 122A, the second seal member 122B, and the third seal member 122C is omitted. In the third example, the seal structure 120 includes at least one of a first seal portion 121, a second seal portion 122, a third seal portion 123, a fourth seal portion 124, a fifth seal portion 125, and a sixth seal portion 126. It may take the form of omitting one.

- The two-dimensional shape of the main unit 10 in plan view can be arbitrarily changed. In one example, the two-dimensional shape of main unit 10 in plan view is a shape including corners.
- The relationship between the upper surface 23A of the apparatus main body 20 and the upper surface 75A of the tank 70 can be arbitrarily changed. In the first example, the upper surface 23A of the device main body 20 is higher than the upper surface 75A of the tank 70. As shown in FIG. In the second example, the upper surface 23A of the device main body 20 is lower than the upper surface 75A of the tank 70. FIG. In the third example, a portion of the upper surface 75A of the tank 70 covers the upper surface 23A of the apparatus body 20 so that the upper surface 75A of the tank 70 constitutes the entire upper surface of the main body unit 10 . In the fourth example, a portion of the upper surface 23A of the apparatus main body 20 covers the upper surface 75A of the tank 70 so that the upper surface 23A of the apparatus main body 20 constitutes the entire upper surface of the main unit 10. FIG. In the fifth example, the tank 70 is detachably provided on the upper surface 23A of the apparatus main body 20. As shown in FIG. The relationship between the upper surface 23A of the apparatus main body 20 and the upper surface 75A of the tank 70 indicates the relationship when the tank 70 is attached to the apparatus main body 20. FIG.

- The relationship between the first end surface 103A of the second case 101 and the upper surface 23A of the apparatus main body 20 can be arbitrarily changed. In the first example, the first end surface 103A is higher than the upper surface 23A of the apparatus body 20. As shown in FIG. In the second example, the first end surface 103A is lower than the upper surface 23A of the apparatus body 20. As shown in FIG. Note that the relationship between the first end face 103A of the second case 101 and the upper surface 23A of the apparatus main body 20 indicates the relationship when the cleaning unit 100 is attached to the main body unit 10. FIG.

- The relationship between the recessed portion 34 of the case body 30 and the recessed portion 41 of the placement portion 40 can be arbitrarily changed. In one example, the recessed portion 34 of the case body 30 is provided at a position shifted from the recessed portion 41 of the placement portion 40 in the width direction of the main unit 10 . In the second case 101 in this example, the second end 104 does not face the arrangement portion 40 when the cleaning unit 100 is attached to the main unit 10 . The configuration in which the second end portion 104 of the second case 101 does not face the placement portion 40 includes a configuration in which the length of the second case 101 is shortened.

- The structure of the elastic member 42 can be changed arbitrarily. In the first example, the first elastic member 42A is provided on part of the edge 41B of the opening 41A. In the second example, a second elastic member 42B is provided on part of the inner peripheral surface 41C of the recess 41. As shown in FIG. In the third example, the second elastic member 42B is provided on part of the bottom surface 41D of the recess 41. As shown in FIG. In a fourth example, the elastic member 42 can take a form in which at least one of the first elastic member 42A and the second elastic member 42B is omitted.

- The 1st outer wall 30A of the case main body 30 can take the form which abbreviate|omitted the control part 35. As shown in FIG. According to this example, when the cleaning unit 100 is attached to the main unit 10 , the position of the cleaning unit 100 relative to the main unit 10 is held only by the connecting portion 110 . The first outer wall 101A of the second case 101 can take a form in which the contact portion 108 is omitted.

- Whether or not the magnet 111A is provided at the center of the main unit 10 in the height direction in the concave portion 34 can be arbitrarily changed. In the first example, the magnet 111A is provided on the upper side of the main unit 10 in the height direction in the recess 34 . In the second example, the magnet 111A is provided on the lower side of the main unit 10 in the height direction in the recess 34 .

- Whether or not the magnet 111A is provided in the first accommodating portion 111C can be arbitrarily changed. In one example, magnet 111A is provided on the outer surface side of recess 34 . According to this example, the first accommodating portion 111C is omitted from the first connecting portion 111. FIG. Note that the case main body 30 can take a form in which the concave portion 34 is omitted.

- Whether or not the ferromagnetic body 112A is provided in the second accommodating portion 112B can be arbitrarily changed. In one example, the ferromagnetic body 112A is provided on the outer surface side of the second case 101 . According to this example, the second receiving portion 112B is omitted from the second connecting portion 112. FIG.

The relationship between the thickness TA1 of the second outer wall 30B of the case body 30 and the thicknesses TA2 and TA3 of the portions surrounding the second outer wall 30B in the first outer wall 30A of the case body 30 can be arbitrarily changed. In a first example, thickness TA1 is substantially the same thickness as at least one of thicknesses TA2 and TA3. In the second example, the thickness TA1 is thicker than at least one of the thicknesses TA2 and TA3.

The relationship between the thickness TB1 of the thin portion 101C in the second outer wall 101B of the second case 101 and the thicknesses TB2 and TB3 of the portions surrounding the second outer wall 101B in the first outer wall 101A of the second case 101 can be changed arbitrarily. It is possible. In a first example, thickness TB1 is substantially the same thickness as at least one of thicknesses TB2 and TB3. In the second example, thickness TB1 is thicker than at least one of thicknesses TB2 and TB3.

- The structure of the coupling part 110 can be changed arbitrarily. In a first example, the first coupling portion 111 contains a ferromagnetic material and the second coupling portion 112 contains a magnet. According to this example, manufacturing costs are lower than when both the first coupling portion 111 and the second coupling portion 112 include magnets. In the second example, first coupling portion 111 includes magnet 111A, and second coupling portion 112 includes a magnet that attracts magnet 111A. The magnets included in coupling 110 may be electromagnets. In a third example, the connecting portion 110 physically connects the main unit 10 and the cleaning unit 100 . As an example of physical coupling, one of the first coupling portion 111 and the second coupling portion 112 includes a hook, and the other of the first coupling portion 111 and the second coupling portion 112 includes a hook portion that can be coupled with the hook. The mouthwash device 1 may take a form in which the coupling portion 110 is omitted.

- Whether or not the operation unit 50 is provided on the upper surface 23A of the apparatus main body 20 can be arbitrarily changed. In one example, the operation unit 50 is provided on the side surface of the device body 20 .
- Whether or not the display unit 60 is provided on the upper surface 23A of the device main body 20 can be arbitrarily changed. In one example, the display section 60 is provided on the side surface of the device main body 20 . The oral cavity cleaning device 1 can take a form in which the display section 60 is omitted.

- The oral cavity cleaning device 200 of the modification differs from the oral cavity cleaning device 1 of the embodiment in the points described below, and has substantially the same configuration as the oral cavity cleaning device 1 of the embodiment in other respects. In addition, in the description of the mouthwash device 200 of the modified example, the same reference numerals are given to the structures common to the mouthwash device 1 of the embodiment, and part or all of the description of the structure is omitted.

The oral cavity cleaning device 200 shown in FIG. 16 includes a body unit 210, a tube 80, a cleaning unit 220, and a power cord PC. Main unit 210 includes apparatus main body 211 , support base 212 , tank 213 , and operation section 214 . The configurations of the device main body 211, the tank 213, the operating section 214, and the cleaning unit 220 are substantially the same as the configurations of the device main body 20, the tank 70, the operating section 50, and the cleaning unit 100 of the embodiment. The tank 213 is detachably provided on the upper part of the device main body 211 . The support table 212 is a table on which the cleaning unit 220 is placed, and is provided integrally with the apparatus main body 211 . In one example, the cleaning unit 220 and the main unit 210 are magnetically coupled by placing the cleaning unit 220 on the support base 212 .

Main unit 210 further includes placement portion 215 . The placement portion 215 is provided in the main unit 10 so that the tube 80 can be placed in a state where the cleaning unit 100 is attached to the main unit 210 . In one example, a portion surrounded by cleaning unit 220 placed on support table 212 , side surface 211 A of apparatus main body 211 , upper surface 212 A of support table 212 , and side surface 213 A of tank 213 constitute placement portion 215 .

Oral cleaning device 200 further includes an elastic member 230 . The dotted portion in FIG. 16 indicates the elastic member 230 . An example of the material forming the elastic member 230 is an elastic material that does not easily wear the tube 80 even when in contact with the tube 80 . An example of this elastic material is an elastomer. The elastic member 230 is provided on the placement portion 215 . 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 provided on the side surface 211A of the device body 211 . The second elastic member 232 is provided on the top surface 212A of the support base 212 . A third elastic member 233 is provided on the side surface 213A of the tank 213 . Since the elastic member 230 is provided in the arrangement portion 215 with which the tube 80 is likely to come into contact, the vibration of the tube 80 is absorbed by the elastic member 230 when the tube 80 vibrates. Therefore, the tube 80 is less likely to wear out. In addition, the elastic member 230 may take a form in which one or two of the first elastic member 231, the second elastic member 232, and the third elastic member 233 are omitted.

Oral cleaning device 200 further includes connecting portion 81 and elastic member 240 . The connection portion 81 is provided in the placement portion 215 . An example of elastic member 240 is an O-ring. An elastic member 240 is provided on the placement portion 215 to seal the connecting portion 81 . Therefore, it is difficult for water to enter the body unit 210 from the connecting portion 81 .

(Appendix)
(Mode 1)
a main unit including a pump for discharging cleaning liquid;
a tube connected to the main unit so that the discharged cleaning liquid flows;
a cleaning unit connected to the tube so as to discharge the cleaning liquid;
a coupling portion that couples the main body unit and the cleaning unit by magnetic force;
a placement portion provided in the main unit so that the tube can be placed;
the cleaning unit includes a first end to which a nozzle is attached and a second end opposite the first end;
The tube includes a curled portion and a washing unit side connection,
the cleaning unit side connection portion is located below the second end portion and is connected to the second end portion;
The curled portion is positioned closer to the body unit than the contact portion between the body unit and the cleaning unit when the cleaning unit is attached to the body unit, and includes a portion overlapping the cleaning unit in the height direction. The oral cavity cleaning device is arranged in the arrangement portion as above.
(Mode 2)
The oral cavity cleaning apparatus according to mode 1, wherein the portion of the curled portion that overlaps the cleaning unit includes the uppermost portion of the curled portion.
(Mode 3)
the body unit includes a recess in which the cleaning unit is arranged;
The concave portion of the main body unit is configured so that the cleaning unit can move away from the main body unit in a depth direction perpendicular to the height direction and the width direction when the cleaning unit is attached to the main body unit. A mouthwash device according to form 1 or 2.
(Mode 4)
The oral cavity cleaning apparatus according to mode 3, wherein the concave portion of the body unit includes an upper end portion opening upward and a lower end portion opening downward so that the cleaning unit can move upward and downward with respect to the body unit.
(Form 5)
The connecting portion is configured to connect the main body unit and the washing unit such that the first end portion does not protrude upward from the upper surface of the main body unit when the washing unit is attached to the main body unit. A mouthwash device according to any one of aspects 1 to 4, comprising:
(Mode 6)
The oral cavity cleaning apparatus according to any one of modes 1 to 5, wherein the connecting portion includes a first connecting portion provided on the outer shell of the main body unit and a second connecting portion provided on the outer shell of the cleaning unit.
(Mode 7)
one of the first coupling portion and the second coupling portion includes a magnet;
7. The mouthwash device of form 6, wherein the other of the first coupling portion and the second coupling portion includes a magnet or a ferromagnetic material.
(Form 8)
The mouthwash device according to mode 7, wherein the first coupling part includes a first accommodation part that accommodates the magnet or the ferromagnetic material.
(Mode 9)
The body unit further includes a first case that houses the pump,
The oral cavity cleaning device according to mode 8, wherein the first case includes a first outer wall including a portion positioned around the first housing, and a second outer wall forming the first housing.
(Form 10)
The oral cavity cleaning device according to mode 9, wherein the thickness of the second outer wall is thinner than the thickness of the portion of the first outer wall located around the first accommodating portion.
(Form 11)
the second coupling portion includes a second accommodation portion that accommodates the magnet or the ferromagnetic material;
The cleaning unit includes a first outer wall including a portion positioned around the second container, and a second outer wall forming the second container,
The mouthwash device according to any one of Modes 7 to 10, wherein the thickness of the second outer wall is thinner than the thickness of the portion of the first outer wall located around the second housing portion.
(Form 12)
the cleaning unit includes a grip,
The mouthwash device according to any one of Modes 6 to 11, wherein the second coupling portion is provided on the grip portion.
(Form 13)
The oral cavity cleaning apparatus according to any one of modes 1 to 12, wherein the body unit includes a restricting part that restricts downward movement of the cleaning unit attached to the body unit with respect to the body unit.
(Form 14)
The cleaning unit is configured such that the first end face of the first end portion is arranged substantially on the same plane as the upper surface of the main body unit when attached to the main body unit. A mouthwash device according to any one of the preceding paragraphs.
(Form 15)
15. The mouthwash device of any one of aspects 1-14, wherein the second end is configured to face the placement portion.

The mouthwash device according to the present disclosure can be used for various mouthwash devices including household and commercial use.

Reference Signs List 1: Oral cleaning device 10: Main unit 21: First case 30A: First outer wall 30B: Second outer wall 31: Pump 34: Recessed portion 35: Regulating portion 40: Placement portion 41: Recessed portion 80: Tube 100: Washing unit 110: Coupling Part 101: Second Case 101A: First Outer Wall 101B: Second Outer Wall 102: Grip Part 103: First End 103A: First End Face 104: Second End 105: Nozzle 111: First Coupling Part 111A: Magnet 111C: First accommodation portion 112: Second coupling portion 112A: Ferromagnetic material 112B: Second accommodation portion TA1: Thickness TA2: Thickness TA3: Thickness TB1: Thickness TB2: Thickness TB3: Thickness

Claims (8)

a main unit including a pump for discharging cleaning liquid;
a tube connected to the main unit so that the discharged cleaning liquid flows;
a cleaning unit connected to the tube so as to discharge the cleaning liquid;
a coupling part that couples the main body unit and the cleaning unit by magnetic force;
The main body unit has a first recess recessed inward from an outer wall of the main body unit so that the cleaning unit can be placed thereon, and the tube is placed in the state where the cleaning unit is placed in the first recess. a second recess recessed inwardly from the outer wall of said main body unit to allow the mouthwash. the connecting portion includes a first connecting portion provided on the main body unit and a second connecting portion provided on the cleaning unit;
one of the first coupling portion and the second coupling portion includes a magnet;
2. A mouthwash device according to claim 1, wherein the other of said first coupling portion and said second coupling portion includes a magnet or a ferromagnetic material. the first recess is formed to extend in the height direction of the main unit,
The mouthwash device according to claim 2, wherein the magnet or the ferromagnetic body is provided at the center of the first recess in the height direction. The main unit includes a first outer wall forming an outer shell and a second outer wall forming an outer shell together with the first outer wall,
The magnet or the ferromagnetic body is provided on the inner surface side of the second outer wall of the main unit,
The oral cavity cleaning apparatus according to claim 2 or 3, wherein the thickness of the second outer wall of the main body unit is thinner than the thickness of the portion of the first outer wall of the main body unit surrounding the second outer wall of the main body unit. The washing unit includes a first outer wall forming an outer shell and a second outer wall forming an outer shell together with the first outer wall,
the magnet or the ferromagnetic body is provided on the inner surface side of the second outer wall of the washing unit;
The thickness of the second outer wall of the washing unit is thinner than the thickness of the portion of the first outer wall of the washing unit surrounding the second outer wall of the washing unit. oral irrigation device. The oral cavity cleaning apparatus according to any one of claims 1 to 5, wherein the body unit includes a restricting portion that restricts downward displacement of the cleaning unit arranged in the first recess. The cleaning unit includes a case including a grip portion, and a nozzle provided in the case so as to discharge the cleaning liquid,
The case includes a first end to which the nozzle is attached and a first end face formed at the first end, and the first end face is formed in the state in which the cleaning unit is arranged in the first recess. 7. The mouthwash device according to any one of claims 1 to 6, wherein is configured to be arranged on substantially the same plane as the upper surface of the main body unit. The cleaning unit includes a case including a grip portion, and a nozzle provided in the case so as to discharge the cleaning liquid,
The case includes a first end to which the nozzle is attached, a second end opposite to the first end, and a first end surface formed at the first end, wherein the cleaning unit A mouthwash device according to any one of claims 1 to 7, wherein the second end is configured to face the second recess when placed in the first recess.

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