Oral cavity washing device

Abstract

To provide an oral cavity washing device capable of suppressing breakage of a hinge holding a liquid supply lid.SOLUTION: In an oral cavity washing device 1 including a device body 5 with a built-in pump 15 and a tank 3 having a reservoir part 9, a liquid supply hole 93 for injecting a liquid into the reservoir part 9 is formed in the tank 3, and the liquid supply hole 93 is closed by a liquid supply lid 95 openably / closably provided on the tank 3 via a hinge 101. In a state where the liquid supply lid 95 is opened, an outer surface of the liquid supply lid 95 comes into contact with a side surface of the tank 3, and an end portion of the liquid supply lid 95 provided on a side opposite to the hinge 101 is disposed within a range along the side surface of the tank 3 in a front view so that the end portion does not protrude from a lower end of the side surface of the tank 3.SELECTED DRAWING: Figure 17

Description

[Technical Field]

[0001] The present disclosure relates to an oral cleaning device. [Background technology]

[0002] Conventionally, oral cleaning devices have been known that include a device main body with a built-in pump and a tank with a storage section for storing liquid (see Patent Document 1). The tank is formed with a liquid supply hole for injecting liquid into the storage section, and a liquid supply lid that can be opened and closed is provided via a hinge. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2011-200424 Summary of the Invention [Problem to be solved by the invention]

[0004] In an oral cleaning device such as that disclosed in Patent Document 1, when the liquid supply lid is open, the edge of the liquid supply lid protrudes beyond the side surface of the tank. Therefore, if the tank is dropped while the liquid supply lid is open, the edge of the liquid supply lid protruding from the side surface of the tank may collide with a peripheral component, potentially damaging the hinge that holds the liquid supply lid.

[0005] The present disclosure has been made in view of the problems inherent in the prior art, and an object of the present disclosure is to provide an oral cleaning device that can prevent damage to the hinge that holds the liquid supply lid. [Means for solving the problem]

[0006] An oral cleaning device according to an aspect of the present disclosure comprises a device main body having a built-in pump and a tank having a storage section, wherein the tank has a liquid supply hole formed therein for injecting liquid into the storage section, and the liquid supply hole is closed by a liquid supply lid that is attached to the tank via a hinge so as to be able to open and close, and when the liquid supply lid is open, the outer surface of the liquid supply lid contacts the side of the tank, and the end of the liquid supply lid attached on the opposite side of the hinge is positioned within a range along the side of the tank when viewed from the front, and the end does not protrude from the lower end of the side of the tank. [Effects of the Invention]

[0007] According to the present disclosure, an oral cleaning device can be provided that can prevent damage to the hinge that holds the liquid supply lid. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a schematic diagram of an oral cleaning device according to an embodiment of the present invention. [Figure 2] 1 is an oblique view of the oral cleaning device of this embodiment when the device body is pulled out from the tank. [Figure 3] 1 is an oblique view of the oral cleaning device according to the present embodiment, when the device body is housed in the tank. [Figure 4] 1 is a cross-sectional view of the oral cleaning device of this embodiment when the device body is pulled out from the tank. [Figure 5] FIG. 5 is an enlarged view of a main part of FIG. 4. [Figure 6] 1 is a cross-sectional view of the oral cleaning device of this embodiment when the device body is housed in the tank. [Figure 7] FIG. 7 is an enlarged view of a main part of FIG. 6. [Figure 8] 10 is a side view of the oral cleaning device according to the present embodiment when the locking portion is engaged. FIG. [Figure 9] 10 is a side view of the oral cleaning device according to the present embodiment when the locking portion is disengaged. FIG. [Figure 10] 1 is a side view of the oral cleaning device of this embodiment when the device body is pulled out from the tank. [Figure 11] FIG. 2 is a perspective view of the main body of the oral cleaning device according to the present embodiment. [Figure 12] FIG. 2 is a perspective view of the main body of the oral cleaning device according to the present embodiment. [Figure 13] 1 is a perspective view of a tank of an oral cleaning device according to the present embodiment. [Figure 14] 2 is a side view of the tank of the oral cleaning device according to the present embodiment. FIG. [Figure 15] 15 is a cross-sectional view taken along the line XV-XV in FIG. 14. [Figure 16] 16 is a cross-sectional view taken along line XVI-XVI of FIG. 14. [Figure 17] 1 is a side view of the tank of the oral cleaning device of this embodiment when the liquid supply lid is open. [Figure 18] 18 is a cross-sectional view taken along the line XVIII-XVIII in FIG. 17. [Figure 19] 2 is a perspective view of the bottom wall of the oral cleaning device according to the present embodiment. FIG. [Figure 20] A cross-sectional view of the bottom wall of the oral cleaning device according to this embodiment. [Figure 21] A cross-sectional view of the bottom wall of the oral cleaning device according to this embodiment. [Figure 22] 1 is a perspective view of a liquid supply lid of an oral cleaning device according to this embodiment. [Figure 23] 2 is a plan view of the liquid supply lid of the oral cleaning device according to the present embodiment. FIG. [Figure 24] FIG. 10 is a side view showing another example of the oral cleaning device according to the present embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, embodiments will be described in detail with reference to the drawings. However, unnecessary detailed description may be omitted. For example, detailed description of already well-known matters or redundant description of substantially the same configuration may be omitted.

[0010] The accompanying drawings and the following description are provided to enable those skilled in the art to fully understand the present disclosure, and are not intended to limit the subject matter described in the claims.

[0011] As shown in FIG. 1, an oral cleaning device 1 according to this embodiment includes a tank 3, a device main body 5, and a nozzle .

[0012] The tank 3 is formed in a cylindrical shape with a bottom. The inside of the tank 3 is a storage section 9 that stores a liquid such as water (hereinafter referred to as water). The device main body 5 is supported in the storage section 9 so that it can slide in the length direction (hereinafter referred to as the height direction). The device main body 5 is stored in the storage section 9 when the oral cleaning device 1 is not in use. When the oral cleaning device 1 is to be used, the device main body 5 is pulled out from the storage section 9. In this case, water is supplied to the storage section 9 of the tank 3.

[0013] The device body 5 is formed in a cylindrical shape with both ends in the height direction closed. The device body 5 is provided with a tube 11 that is placed inside the storage section 9 of the tank 3. A filter (not shown) is provided at the tip of the tube 11 to remove foreign matter that has become mixed in with the water stored in the storage section 9. The end of the tube 11 on the device body 5 side is connected to an intake path 13 provided inside the device body 5. The intake path 13 is connected to a pump 15 built inside the device body 5, and supplies the water in the tank 3 that is sucked up by the tube 11 when the pump 15 is driven to the pump 15.

[0014] Pump 15 includes motor 17, cam 19, piston 21, and pump chamber 23. Motor 17 is driven by power supplied from a rechargeable battery (not shown) housed inside device body 5. Cam 19 converts the rotation of motor 17 into an operating force in the axial direction. Piston 21 is reciprocated along the height direction of device body 5 by the operating force in the axial direction converted by cam 19. An end of piston 21 is disposed in pump chamber 23, and the volume of pump chamber 23 changes with the reciprocating motion of piston 21. Pump chamber 23 is connected to suction passage 13 and discharge passage 25 provided inside device body 5. An suction valve (not shown) is provided between pump chamber 23 and suction passage 13, and a discharge valve (not shown) is provided between pump chamber 23 and discharge passage 25.

[0015] When the motor 17 drives the piston 21 of the pump 15 in a direction that increases the volume of the pump chamber 23, the water in the tank 3 flows into the pump chamber 23 via the tube 11 and the suction passage 13. When the motor 17 drives the piston 21 in a direction that decreases the volume of the pump chamber 23, the water that has flowed into the pump chamber 23 is discharged to the nozzle 7 via the discharge passage 25.

[0016] Nozzle 7 is formed in a hollow, elongated shape and is detachable from device body 5. When attached to device body 5, nozzle 7 has its interior communicated with discharge path 25. Nozzle 7 sprays water flowing out from discharge path 25 from its tip.

[0017] When such an oral cleaning device 1 is not in use, the nozzle 7 is removed from the device body 5, and the device body 5 is pushed into and stored in the tank 3. When the oral cleaning device 1 is to be used, the device body 5 is pulled out from the tank 3, and the nozzle 7 is attached to the device body 5. Hereinafter, details of the oral cleaning device 1 will be described with reference to Figs. 1 to 23.

[0018] As shown in FIGS. 1 to 12, the device body 5 is formed in a cylindrical shape with both ends in the height direction closed. The device body 5 has a perfectly circular cross section so that it can rotate relatively to the tank 3. A nozzle mounting part 27 is provided on the top surface of the device body 5, to which the nozzle 7 is detachably disposed. The end of the nozzle 7 is inserted into the nozzle mounting part 27, and an engaging part (not shown) provided inside engages with an engaged part (not shown) on the end of the nozzle 7, maintaining the attached state of the nozzle 7. The nozzle 7 attached to the nozzle mounting part 27 can be removed from the device body 5 by pressing a button 29 provided on the upper side of the device body 5 to release the engagement between the engaging part and the engaged part.

[0019] A power switch 31 for starting or stopping the oral cleansing device 1 is provided on the side of the device main body 5. A level selection switch 33 for switching the output of the motor 17 of the pump 15 and changing the strength of water discharged from the nozzle 7 is provided below the power switch 31 on the side of the device main body 5. An indicator lamp 35 for displaying the ON / OFF state of the power switch 31 and the selected level of the level selection switch 33 is provided below the level selection switch 33 on the side of the device main body 5. A cover 37 for protecting the charging connector of the rechargeable battery built into the device main body 5 is provided above and at a different circumferential position from the indicator lamp 35 on the side of the device main body 5.

[0020] A tube 11, which is connected to the suction passage 13, is integrally attached to the underside of the device main body 5. The tube 11 has a length that allows it to reach the bottom of the tank 3 when the device main body 5 is pulled out from the tank 3. When the device main body 5 is housed in the tank 3, the tube 11 is housed in the tank 3 in a state in which it is wound multiple times. A coil spring 39 is disposed around the tube 11 to maintain a position in which the tube 11 extends in the longitudinal direction. By disposing the coil spring 39, the tube 11 can be wound without bending when the device main body 5 is housed in the tank 3, and the tube 11 can be neatly housed in the tank 3. In addition, by disposing the coil spring 39, the tube 11 can be neatly stretched from its wound state when the device main body 5 is pulled out from the tank 3.

[0021] A nozzle accommodating section 41 is provided on the side of the device body 5. The nozzle accommodating section 41 is formed in a groove shape capable of accommodating the nozzle 7, and extends along the height direction of the device body 5. The nozzle accommodating section 41 accommodates the nozzle 7 that has been removed from the device body 5. By providing the nozzle accommodating section 41 in the device body 5, the nozzle 7 that has been removed from the device body 5 can be handled together with the device body 5. Therefore, there is no need to manage the nozzle 7 that has been removed from the device body 5 separately from the device body 5, and management of the nozzle 7 can be made easier.

[0022] A pull-out protrusion 43 that protrudes from the side surface of the device body 5 is provided below the side surface of the device body 5. The pull-out protrusion 43 extends along the circumferential direction of the device body 5. A plurality of pull-out protrusions 43 (two in this example) are provided in the circumferential direction on the side surface of the device body 5. The pull-out protrusions 43 form a holding portion 45 that holds the device body 5 in the tank 3 when the device body 5 is pulled out from the tank 3.

[0023] Below the pull-out protrusion 43 on the side surface of the device body 5, a storage protrusion 47 is provided that protrudes from the side surface of the device body 5. The storage protrusion 47 extends along the circumferential direction of the device body 5. A plurality of storage protrusions 47 (two in this example) are provided in the circumferential direction on the side surface of the device body 5. The storage protrusions 47 form a locking portion 49 that holds the device body 5 in the tank 3 when the device body 5 is stored in the tank 3.

[0024] A mark protrusion 51 protruding from the side surface of the device main body 5 is provided on the upper side of the device main body 5. The mark protrusion 51 constitutes a mark portion 53 that serves as a guide for positioning the lock portion 49 when the device main body 5 is housed in the tank 3.

[0025] Below the device main body 5, a packing 55 serving as a sealing member is attached in close contact with a groove formed continuously in the circumferential direction on the outer peripheral surface of the device main body 5. When the device main body 5 is attached to the tank 3, the outer peripheral surface of the packing 55 comes into close contact with the inner peripheral surface of the tank 3, thereby sealing the gap between the device main body 5 and the tank 3. The packing 55 is detachably attached to the groove of the device main body 5, and by removing the packing 55 from the device main body 5, it is possible to clean just the packing 55.

[0026] Such device main body 5 is slidably supported in the tank 3. When the oral cleansing device 1 is used, the device main body 5 is pulled out from the tank 3. On the other hand, when the oral cleansing device 1 is not in use, the device main body 5 is stored in the tank 3.

[0027] As shown in Figures 1 to 10 and 13 to 21, the tank 3 is made of, for example, polypropylene resin so that it can be washed in a dishwasher, and is transparent or translucent to enhance the design. The tank 3 is formed in a cylindrical shape with one end in the height direction open and the other end closed, with a bottom. The cross section of the tank 3 is formed to be a perfect circle so that the device main body 5 can rotate relative to it. The inside of the tank 3 forms a storage section 9 for storing water. The device main body 5 is supported in the storage section 9 so that it can slide in the height direction. The storage section 9 can accommodate the device main body 5 except for the upper surface side. The tank 3 has a cylindrical body 57 and a bottom wall 59.

[0028] The cylindrical body 57 forms the peripheral wall of the tank 3 and constitutes the majority of the storage section 9. An attachment protrusion 61 protruding from the inner peripheral surface of the cylindrical body 57 is provided below the inner peripheral surface of the cylindrical body 57. The attachment protrusion 61 extends along the circumferential direction of the cylindrical body 57. An engagement recess 63 is provided on the outer surface of the attachment protrusion 61. A plurality of attachment protrusions 61 (two in this case) are provided along the circumferential direction of the inner peripheral surface of the cylindrical body 57. The multiple attachment protrusions 61, 61 have different lengths of extension in the circumferential direction of the cylindrical body 57. The attachment protrusions 61 form an attachment section 65 that allows the bottom wall 59 to be attached and detached to the cylindrical body 57.

[0029] The bottom wall 59 constitutes the bottom wall of the tank 3 that closes the opening on the lower side of the cylindrical body 57, and constitutes the storage section 9 when attached to the cylindrical body 57. As shown in FIGS. 19 to 22, a peripheral wall 67 that protrudes from the bottom surface toward the cylindrical body 57 and continues in the circumferential direction is provided on the outer periphery of the bottom wall 59. The height of the peripheral wall 67 is set so that the user's fingers can reach the bottom surface when the bottom wall 59 is removed from the cylindrical body 57. Note that because the tank 3 is transparent, it is preferable to make the peripheral wall 67 as low as possible so that the boundary line between the cylindrical body 57 and the bottom wall 59 is not noticeable when the bottom wall 59 is attached to the cylindrical body 57.

[0030] As shown in Figures 15 and 19, a mounting recess 69 is provided on the outer surface of the peripheral wall 67 of the bottom wall 59. The mounting recess 69 is open at the top, and one circumferential side of the peripheral wall 67 forms a bottom into which the mounting protrusion 61 is inserted. An engagement protrusion 71 that can engage with the engagement recess 63 of the mounting protrusion 61 is formed to protrude from the bottom side of the mounting recess 69. An inclined surface 73 that slopes upward from the bottom toward the opening is provided between the opening and the bottom of the mounting recess 69. A plurality of mounting recesses 69 (two in this example) are provided in the circumferential direction of the outer circumferential surface of the peripheral wall 67. The openings of the multiple mounting recesses 69 have different opening lengths in the circumferential direction of the peripheral wall 67. The opening lengths of the openings of the multiple mounting recesses 69 correspond to the extension lengths of the multiple mounting protrusions 61 in the circumferential direction so that the multiple mounting protrusions 61 can be inserted. The mounting recess 69 constitutes the mounting projection 61 of the cylindrical body 57 and a mounting portion 65 that allows the bottom wall 59 to be attached to and detached from the cylindrical body 57 .

[0031] When attaching the bottom wall 59 to the cylindrical body 57, first, the corresponding attachment protrusions 61 are positioned in the openings of the attachment recesses 69 in the attachment portion 65. Next, the cylindrical body 57 and the bottom wall 59 are moved relatively in a direction approaching each other in the height direction so that the attachment protrusions 61 are inserted into the openings of the attachment recesses 69. Then, with the attachment protrusions 61 inserted into the attachment recesses 69, the cylindrical body 57 and the bottom wall 59 are rotated relatively to each other so that the attachment protrusions 61 are inserted into the bottoms of the attachment recesses 69. At this time, the engagement recesses 63 of the attachment protrusions 61 engage with the engagement protrusions 71 of the attachment recesses 69, maintaining the attachment of the bottom wall 59 to the cylindrical body 57.

[0032] To remove the bottom wall 59 from the cylindrical body 57, first, the cylindrical body 57 and the bottom wall 59 are rotated relative to each other, and the mounting protrusions 61 are pulled out of the bottoms of the mounting recesses 69 in the mounting portion 65. At this time, the engagement recesses 63 of the mounting protrusions 61 are disengaged from the engagement protrusions 71 of the mounting recesses 69. Next, the relative rotation of the cylindrical body 57 and the bottom wall 59 is continued until the mounting protrusions 61 come into contact with the inclined surfaces 73 of the mounting recesses 69, and the relative rotation of the cylindrical body 57 and the bottom wall 59 is further continued. At this time, the mounting protrusions 61 slide against the inclined surfaces 73, moving the cylindrical body 57 and the bottom wall 59 relatively apart in the height direction. After sliding against the inclined surfaces 73, the mounting protrusions 61 are positioned in the openings of the mounting recesses 69. The bottom wall 59 can be removed from the cylindrical body 57 by relatively moving the cylindrical body 57 and the bottom wall 59 in a direction separating them in the height direction.

[0033] Such an attachment portion 65 has a thread structure in which the attachment protrusion 61 and the attachment recess 69 mesh with each other. Therefore, the bottom wall 59 can be attached to or detached from the cylindrical body 57 by rotating the bottom wall 59 about the axis of the cylindrical body 57. In such an attachment portion 65, the multiple attachment protrusions 61, 61 each have a different circumferential extension length. Therefore, the attachment position of the bottom wall 59 relative to the cylindrical body 57 can be positioned at one location in the circumferential direction. Note that, while the attachment position of the bottom wall 59 can be positioned by providing the attachment portion 65 at one location in the circumferential direction, there is a possibility that the bottom wall 59 may become loose relative to the cylindrical body 57. Therefore, it is preferable to provide the attachment portion 65 at multiple locations in the circumferential direction.

[0034] Here, in the conventional tank, the cylindrical body 57 and the bottom wall 59 are formed as a single continuous member. For this reason, in the conventional tank, the bottom wall 59 cannot be removed from the cylindrical body 57, and when cleaning the inner surface of the tank, fingers cannot reach the bottom surface from the opening of the tank, so a long cleaning brush or the like has to be used.

[0035] In contrast, the tank 3 is composed of a cylindrical body 57 and a bottom wall 59 that is detachably attached to the cylindrical body 57 so that at least a portion of the bottom wall is openable. With such a tank 3, the bottom wall 59 is removed from the cylindrical body 57 when cleaning the inside of the tank 3. When the bottom wall 59 is removed from the cylindrical body 57, the inside bottom surface can be reached with fingers, eliminating the need for a long cleaning brush or the like. This makes it easy to clean the inside bottom surface of the tank 3. Furthermore, the peripheral wall 67 of the bottom wall 59 is set at a height that allows fingers to reach the bottom surface, making it easy to clean the inside of the tank 3.

[0036] As shown in Figures 16, 19 to 22, a packing 75 serving as a sealing member is disposed between the cylindrical body 57 and the bottom wall 59. The packing 75 is fitted in a groove 77 that is formed continuously in the circumferential direction on the outer peripheral surface of the peripheral wall 67 of the bottom wall 59 and in close contact with the groove 77. The packing 75 is detachable from the groove 77. A lip that is in close contact with the inner peripheral surface of the cylindrical body 57 is formed continuously in the circumferential direction on the outer peripheral surface of the packing 75. The packing 75 seals the gap between the cylindrical body 57 and the bottom wall 59 by fitting closely to the cylindrical body 57 and the bottom wall 59. The groove 77 may also be provided on the inner peripheral surface of the cylindrical body 57.

[0037] In conventional tanks, a sealing member such as packing 75 is formed integrally with the tank, and the sealing member cannot be removed without destroying part of the tank. In addition, when the sealing member is located on the bottom wall side of the tank, it is difficult to clean the sealing member, and dirt such as water stains and mold easily adheres to the sealing member.

[0038] On the other hand, the packing 75 is detachably attached to a groove 77 in the bottom wall 59, which is detachably attached to the cylindrical body 57. Therefore, when removing the packing 75 from the tank 3, for example during cleaning, the packing 75 can be easily removed from the groove 77 in the bottom wall 59 by removing the bottom wall 59 from the cylindrical body 57. In addition, because the packing 75 can be easily removed from the tank 3, it is easy to wash the packing 75, and the packing 75 can be kept clean.

[0039] 15 and 19, a notch 79 is provided in the upper wall portion constituting the groove 77 in which the packing 75 is fitted, and is formed by cutting away the notch 79 from the outer peripheral surface of the packing 75. The user can insert his or her finger into the notch 79 to make contact with the outer peripheral surface of the packing 75. This makes it possible to easily remove the packing 75 fitted in the groove 77 from the groove 77. Note that a plurality of notches 79 may be provided in the circumferential direction of the groove 77.

[0040] Here, as a configuration in which at least a portion of the bottom wall of the tank 3 is openable, for example, the tank 3 may be formed of a cylindrical body 57 and a bottom wall 59, with a detachable screw-type mounting portion 65 provided between the cylindrical body 57 and the bottom wall 59. In this configuration, the bottom wall 59 can be attached to the cylindrical body 57 or detached from the cylindrical body 57 by rotating the cylindrical body 57 and the bottom wall 59 relative to each other. Note that in this configuration, since the cylindrical body 57 and the bottom wall 59 are rotated relative to each other, at least the screw-type mounting portion 65 must be cylindrical. Alternatively, the tank 3 may be formed of the cylindrical body 57 and the bottom wall 59, with the bottom wall 59 being openable and closable relative to the cylindrical body 57 via the mounting portion 65, such as a hinge. Furthermore, the tank 3 may be composed of a cylindrical body 57 and a bottom wall 59, and may be configured so that, for example, the bottom wall 59 can be attached and detached to the cylindrical body 57 via an attachment portion 65 consisting of a fitting portion that slides in the vertical direction or the left-right direction to fit.

[0041] As another configuration, for example, the tank 3 is configured with a single continuous member including the cylindrical body 57 and the bottom wall 59, and an opening is provided in the bottom wall 59 that communicates with the inner bottom surface of the bottom wall 59, and a lid is provided to close the opening. In this configuration, the opening in the bottom wall 59 is preferably open so that a finger can be inserted to clean the entire inner bottom surface of the bottom wall 59. The lid that closes the opening is preferably able to keep the opening closed, for example, by being provided on the bottom wall 59 via a hinge that can be opened and closed, by having an engaging portion that can engage with the bottom wall 59 in at least one location, or by being able to fit the entire lid into the bottom wall 59.

[0042] In the conventional tank, the cylindrical body 57 and the bottom wall 59 are formed from a single continuous member, and at least a portion of the bottom wall 59 is not open. Therefore, with the conventional tank, it is not possible to discard the water remaining in the tank when the device main body 5 is attached to the tank. For this reason, in the conventional tank, when discarding the water remaining in the tank, it is necessary to remove the device main body 5 from the tank. In addition, when removing the device main body 5 from the tank, the water remaining in the tank may splash around.

[0043] In contrast, the tank 3 is formed so that at least a portion of the bottom wall can be opened. Therefore, when disposing of water remaining in the tank 3, the water can be disposed of through the opening, and there is no need to remove the device main body 5 from the tank 3. In addition, since the water remaining in the tank 3 can be disposed of without removing the device main body 5 from the tank 3, it is possible to prevent the water remaining in the tank 3 from splashing around. This reduces the burden of cleaning the surrounding area after using the oral cleansing device 1.

[0044] The device main body 5 is supported in such a tank 3 so as to be slidable in the height direction. When the oral cleansing device 1 is to be used, the device main body 5 is pulled out from the tank 3. The holding portion 45 keeps the device main body 5 in the pulled-out state from the tank 3. On the other hand, when use of the oral cleansing device 1 has been completed, the device main body 5 is stored in the tank 3. The locking portion 49 keeps the device main body 5 stored in the tank 3.

[0045] 4, 5, and 16, the holding portion 45 includes a pull-out protrusion 43 of the device main body 5 and a pull-out recess 81 provided in the tank 3 that is engageable with the pull-out protrusion 43. The pull-out recess 81 is provided above the inner circumferential surface of the cylindrical body 57 of the tank 3 so as to be engageable with the pull-out protrusion 43 of the device main body 5. The pull-out recess 81 is formed continuously in the circumferential direction of the cylindrical body 57 so as to be engageable with the multiple pull-out protrusions 43, 43.

[0046] When the device body 5 is pulled out from the tank 3, the pull-out protrusion 43 and the pull-out recess 81 of this holding part 45 engage, holding the device body 5 in the pulled-out position relative to the tank 3. Note that by pulling the device body 5 out of the pulled-out position of the tank 3, the engagement of the holding part 45 is released, and the device body 5 can be removed from the tank 3. In this holding part 45, the pull-out protrusion 43 is located in a position that overlaps with the tank 3 in a front view when the device body 5 is attached to the tank 3. Therefore, when the device body 5 is attached to the tank 3, the pull-out protrusion 43 is not exposed from the tank 3 in a front view, making it possible to hide unnecessary irregularities and improve the design.

[0047] As shown in Figures 6, 7, 20, and 21, the locking portion 49 includes an accommodating protrusion 47 of the device main body 5 and an accommodating recess 83 provided in the tank 3 that can engage with the accommodating protrusion 47. The accommodating recess 83 is provided on the inner circumferential surface of the peripheral wall 67 of the bottom wall 59 of the tank 3 so as to be able to engage with the accommodating protrusion 47 of the device main body 5. The accommodating recess 83 extends along the circumferential direction of the peripheral wall 67. The circumferential extension length of the accommodating recess 83 is set to be longer than the circumferential extension length of the accommodating protrusion 47. A plurality of accommodating recesses 83 (two in this example) are provided in the circumferential direction on the inner circumferential surface of the peripheral wall 67 so as to be able to engage with the plurality of accommodating protrusions 47. Inclined surfaces 85 that slope upward from the bottom to the top are provided on both sides of the circumferential direction of the accommodating recess 83.

[0048] When the device main body 5 is accommodated in the tank 3, the locking portion 49 engages the accommodation protrusion 47 with the accommodation recess 83, holding the device main body 5 in the accommodation position relative to the tank 3. At this time, the tube 11, although not shown, is accommodated between the device main body 5 and the tank 3 in a state where it is wound multiple times. In addition, a packing 55 is arranged above the accommodation protrusion 47. By arranging the packing 55 above the accommodation protrusion 47, the packing 55 does not interfere with the accommodation recess 83 when the device main body 5 is accommodated in the tank 3 or when the device main body 5 is pulled out of the tank 3, thereby reducing wear on the packing 55.

[0049] Conventionally, when the device body 5 held by the locking portion 49 is to be pulled out from the tank 3, the device body 5 is grasped and pulled out from the tank 3, thereby releasing the engagement of the locking portion 49. However, for example, if water or the like is attached to the device body 5, the device body 5 may slip, making it impossible to pull out the device body 5 from the tank 3. In such cases, it is difficult to release the engagement of the locking portion 49.

[0050] Therefore, the storage recess 83 of the locking portion 49 is provided with inclined surfaces 85, 85 on both sides in the circumferential direction of the peripheral wall 67, i.e., on both sides in the direction of relative rotation between the device body 5 and the tank 3. Therefore, by rotating the device body 5 and the tank 3 relatively, the storage protrusion 47 comes into contact with the inclined surface 85, and the storage protrusion 47 moves while sliding along the inclined surface 85. When the storage protrusion 47 moves along the inclined surface 85, the device body 5 moves upward out of the tank 3. When the device body 5 moves upward, the locking portion 49 disengages the storage protrusion 47 from the storage recess 83. When the locking portion 49 is disengaged, the device body 5 can be easily pulled out of the tank 3.

[0051] With this type of locking portion 49, even when the device body 5 is slippery, the engagement of the locking portion 49 can be easily released by rotating the device body 5 and the tank 3 relative to each other. This makes it easy to pull the device body 5 out of the tank 3. Furthermore, when the engagement of the locking portion 49 is released, the housing protrusion 47 moves along the inclined surface 85, thereby moving the device body 5 in the direction of pulling it out of the tank 3. This increases the area for gripping the device body 5, making it even easier to pull the device body 5 out of the tank 3.

[0052] Note that the locking portion that can release the engagement by rotating the device main body 5 and the tank 3 relative to each other does not necessarily have to have the inclined surfaces 85, 85 on both sides in the circumferential direction of the storage recess 83. In this case, by rotating the device main body 5 and the tank 3 relative to each other, the engagement protrusion 71 is positioned outside the range of the storage recess 83, thereby releasing the engagement of the locking portion. Even with such a locking portion, the device main body 5 can be easily pulled out of the tank 3.

[0053] The storage protrusion 47 constituting such a locking portion 49 is provided on the side surface of the device main body 5 in a position that overlaps with the tank 3 in a front view when the device main body 5 is pulled out from the tank 3. Therefore, as shown in Fig. 2, when the device main body 5 is pulled out from the tank 3, the storage protrusion 47 is not exposed from the tank 3 in a front view, making it possible to hide unnecessary irregularities and improve the design.

[0054] Such locking portion 49 is provided inside the tank 3, and even if the tank 3 is formed to be transparent, the engagement and disengagement are difficult to see. Therefore, a marking portion 53 is provided in a portion visible from the outside of the tank 3, which serves as a guide for the engagement state of the locking portion 49.

[0055] 8 and 9, the marker portion 53 includes a marker protrusion 51 of the device main body 5 and a marker recess 87 provided on the tank 3 that can engage with the marker protrusion 51. The marker recess 87 is provided on the upper opening edge of the cylindrical body 57 of the tank 3 so as to be able to engage with the marker protrusion 51. The marker recess 87 has a bottom portion that engages with the marker protrusion 51, and is provided with inclined surfaces 89, 89 that slope upward from the bottom portion on both sides in the circumferential direction.

[0056] When the mark protrusion 51 of the device main body 5 engages with the bottom of the mark recess 87 of the tank 3, the mark portion 53 indicates that the accommodating protrusion 47 and the accommodating recess 83 are engaged in the locking portion 49. Therefore, the user can recognize that the locking portion 49 is engaged by visually checking the engagement between the mark protrusion 51 and the mark recess 87.

[0057] When the device main body 5 and the tank 3 are rotated relative to each other, the marking portion 53 moves while the marking protrusion 51 slides along the inclined surface 89. As the marking protrusion 51 moves along the inclined surface 89, the device main body 5 moves upward to remove from the tank 3. This can assist in disengaging the locking portion 49. When the marking protrusion 51 finishes moving along the inclined surface 89, the marking protrusion 51 is positioned at the opening edge of the cylindrical body 57, indicating that the engagement between the storage protrusion 47 and the storage recess 83 in the locking portion 49 has been released. Therefore, the user can recognize that the locking portion 49 has been released by visually confirming the disengagement between the marking protrusion 51 and the inclined surface 87.

[0058] Here, as shown in FIGS. 8 and 10 , drying holes 91 penetrating the peripheral wall of the cylindrical body 57 are provided at the upper part of the side surface of the cylindrical body 57 of the tank 3. The drying holes 91 are arranged to face the nozzle housing portion 41 of the device main body 5 when the device main body 5 is housed in the tank 3. By providing the drying holes 91 in the tank 3 in this way, the nozzles 7 housed in the nozzle housing portion 41 can be dried. Furthermore, the drying holes 91 are arranged to face the bottom wall side of the nozzle housing portion 41 of the device main body 5 when the device main body 5 is pulled out of the tank 3. By arranging the drying holes 91 in this way, water accumulated in the nozzle housing portion 41 can be discharged through the drying holes 91.

[0059] In the oral cleaning device 1, the tank 3 is composed of a cylindrical body 57 and a removable bottom wall 59, so it is possible to remove the bottom wall 59 and supply water to the storage section 9 in the tank 3. However, for example, when adding water to a washbasin or the like, there is no problem if the water inlet is an extendable type, such as a shower type, but if the water inlet is not extendable, it may be difficult to supply water to the tank 3 in an upright position with the bottom wall 59 removed. For this reason, it is preferable to be able to supply water to the storage section 9 in the tank 3 even when the tank 3 is in a horizontal position.

[0060] Therefore, as shown in Figures 8, 16 to 18, 22, and 23, a liquid supply hole 93 for injecting water into the storage section 9 is formed on the side of the tank 3. The liquid supply hole 93 is formed in a cylindrical shape that protrudes from the side of the tank 3. The liquid supply hole 93 is arranged so as to be located below the packing 55 when the device main body 5 is pulled out of the tank 3. Furthermore, the liquid supply hole 93 is arranged so as to be located above the packing 55 when the device main body 5 is housed in the tank 3. By arranging the liquid supply hole 93 in this manner, the liquid supply hole 93 does not interfere with the packing 55, and the sealing performance of the packing 55 can be maintained. The liquid supply hole 93 is closed by a liquid supply lid 95.

[0061] The liquid supply lid 95 is provided with a closure 97 having an outer diameter larger than the outer diameter of the liquid supply hole 93. The contour of the closure 97 is formed as a track ellipse with both vertically curved surfaces and both horizontally straight surfaces. The outer surface of the closure 97 is curved to fit the side shape of the tank 3. Forming the closure 97 in this manner enhances design. A peripheral wall 99 is formed continuously in the circumferential direction on the inner surface of the closure 97, protruding toward the liquid supply hole 93 and insertable into the inner periphery of the liquid supply hole 93. The liquid supply lid 95 is attached to the tank 3 via a hinge 101 so as to be openable and closable in the vertical direction. Note that the liquid supply lid 95 may be provided so as to be openable and closable in the horizontal direction relative to the tank 3 via the hinge 101, for example, and the opening and closing direction of the liquid supply lid 95 may be any direction.

[0062] Hinge 101 is composed of a shaft 103 provided on tank 3 and a hook 105 provided on liquid supply lid 95 that rotatably engages with shaft 103. By configuring hinge 101 with shaft 103 and hook 105, liquid supply lid 95 can be attached and detached to tank 3. This makes it possible to clean only liquid supply lid 95. Note that hook 105 may be provided on tank 3 and shaft 103 on liquid supply lid 95 to form hinge 101. The hinge may also be configured to be formed continuously between tank 3 and liquid supply lid 95.

[0063] Hinge 101 is located in a position where it is entirely hidden by closing portion 97 of liquid supply lid 95 in a front view. By hiding hinge 101 with liquid supply lid 95, hinge 101 can be protected and damage to hinge 101 can be suppressed. In addition, hook 105 does not need to be located at the end of liquid supply lid 95, and the strength of hook 105 can be increased, thereby improving the strength of hinge 101. Note that at least a portion of hinge 101 may be hidden by liquid supply lid 95 in a front view. Also, if hinge 101 has high strength, hinge 101 does not need to be hidden by liquid supply lid 95. Hinge 101 is located in a position where it cannot be touched by the user's fingers when the user grips bottom wall 59 to attach or detach bottom wall 59 to or from tubular body 57. By arranging the hinge 101 in this manner, the bottom wall 59 can be easily attached to and detached from the cylindrical body 57 without interference with the hinge 101 .

[0064] A packing 107 serving as a sealing member is disposed between the liquid supply hole 93 and the liquid supply lid 95. The packing 107 is attached in close contact with a groove 109 formed continuously in the circumferential direction on the outer peripheral surface of the peripheral wall 99 of the liquid supply lid 95. The packing 107 is detachable from the groove 109. The outer peripheral surface of the packing 107 is in close contact with the inner peripheral surface of the liquid supply hole 93 when the liquid supply hole 93 is closed by the liquid supply lid 95. The packing 107 seals the gap between the liquid supply hole 93 and the liquid supply lid 95 by being in close contact with them. The groove 109 may also be provided on the inner peripheral surface of the liquid supply hole 93.

[0065] An upper wall portion constituting groove 109 in which packing 107 is fitted is provided with notches 111 formed by cutting away from the outer circumferential surface of packing 107. A plurality of notches 111 (two in this example) are provided in the circumferential direction of groove 109. Note that notch 111 may also be provided in one location in the circumferential direction of groove 109. Notch 111 allows a user to insert their finger into it, allowing the finger to come into contact with the outer circumferential surface of packing 107. Therefore, packing 107 fitted in groove 109 can be easily removed from groove 109.

[0066] Here, conventionally, when liquid supply lid 95 is opened relative to liquid supply hole 93, the end of liquid supply lid 95 protrudes from the side surface of tank 3 in a front view. For this reason, if tank 3 is dropped while liquid supply lid 95 is open, the protruding end of liquid supply lid 95 may collide with surrounding components, damaging hinge 101 that holds liquid supply lid 95.

[0067] 17 and 18, the end of liquid supply lid 95 is positioned within the range of the side surface of tank 3 when viewed from the front with liquid supply lid 95 open. In particular, the end of liquid supply lid 95 opposite hinge 101 is positioned in a position that does not protrude from the lower end of the side surface of tank 3 when liquid supply lid 95 is open. Therefore, when liquid supply lid 95 is open, it is possible to prevent the end of liquid supply lid 95 from interfering with surrounding components, and to reduce any impact on hinge 101.

[0068] In such an oral cleaning device 1, the tank 3 is formed so that at least a portion of the bottom wall 59 can be opened. Therefore, fingers can reach the bottom surface inside the tank 3 through the portion of the bottom wall 59 where the opening is formed, and cleaning can be easily performed without the need for a long cleaning brush or the like.

[0069] Therefore, in such an oral cleaning device 1, the cleaning performance of the tank 3 can be improved.

[0070] Furthermore, the device body 5 is supported by the tank 3 so as to be slidable between a housed state in which it is housed in the tank 3 and a drawn-out state in which it is drawn out from the tank 3. Therefore, even in an oral cleaning device 1 with an extendable tank, the cleaning ability of the tank 3 can be improved.

[0071] Furthermore, the tank 3 has a cylindrical body 57 and a bottom wall 59 that is detachably attached to the cylindrical body 57. Therefore, the bottom wall 59 can be separated from the cylindrical body 57, making it even easier to clean the inside of the tank 3. In addition, after use, any liquid remaining in the tank 3 can be more reliably disposed of.

[0072] In addition, an attachment portion 65 that maintains the attached state of the cylindrical body 57 and the bottom wall 59 is formed between the cylindrical body 57 and the bottom wall 59. The attachment portion 65 releases the attached state of the cylindrical body 57 and the bottom wall 59 when the bottom wall 59 is rotated relative to the cylindrical body 57. This makes it easy to attach and detach the bottom wall 59 to and from the cylindrical body 57.

[0073] Furthermore, the mounting portion 65 has a threaded structure that meshes with each other, and the bottom wall 59 can be attached to and detached from the cylindrical body 57 by rotating the bottom wall 59 around the axis of the cylindrical body 57. Therefore, the bottom wall 59 can be easily attached to and detached from the cylindrical body 57.

[0074] Furthermore, a packing 75 is detachably attached between the cylindrical body 57 and the bottom wall 59 as a sealing member that seals the gap between the cylindrical body 57 and the bottom wall 59. Therefore, the packing 75 can be removed and only the packing 75 can be cleaned, and the packing 75 can be maintained in a clean state. In addition, the packing 75 can be easily cleaned.

[0075] Furthermore, a groove 77 for holding packing 75 is provided in bottom wall 59. A notch 79 is formed in groove 77 and is spaced apart from the outer peripheral surface of packing 75. This allows the exposed area of ​​the outer peripheral surface of packing 75 to be increased at notch 79, making it possible to easily remove packing 75 from groove 77.

[0076] It should be noted that the above-described embodiments are intended to illustrate the technology of the present disclosure, and various modifications, substitutions, additions, omissions, etc. may be made within the scope of the claims or their equivalents.

[0077] For example, in the oral cleaning device according to the present embodiment, the device body is configured as an extendable tank, with the device body slidably supported on the tank. However, this is not limited thereto. For example, the present disclosure can also be applied to a separate-tank oral cleaning device 1 as shown in FIG. 24. In the separate-tank oral cleaning device 1 shown in FIG. 24, the tank 3 is detachably attached to the device body 5. The nozzle 7 is detachably attached to the device body 5. Even in such a separate-tank oral cleaning device 1, cleaning performance can be improved by making at least a portion of the bottom wall 59 openable. In the separate-tank oral cleaning device 1 shown in FIG. 24, the tank 3 is composed of a cylindrical body 57 and a bottom wall 59 detachably attached to the cylindrical body 57. A liquid supply lid 95 that closes the liquid supply hole is attached to the cylindrical body 57 in a detachable or openable manner. [Industrial Applicability]

[0078] The present disclosure is applicable to anything that requires cleaning inside a tank that stores liquid. [Explanation of symbols]

[0079] 1. Oral cleaning device 3 Tank 5. Device body 9. Storage section 15 Pump 57 Cylindrical body 59 Bottom Wall 65 Mounting part 75 Gasket 77 Groove 79 Notch

Claims

1. a device body with a built-in pump; a tank having a reservoir; Equipped with the tank is formed with a liquid supply hole for injecting liquid into the storage portion, The liquid supply hole is closed by a liquid supply lid that is attached to the tank via a hinge so as to be able to open and close, An oral cleansing device in which, when the liquid supply lid is open, the outer surface of the liquid supply lid contacts the side of the tank, and the end of the liquid supply lid located on the opposite side of the hinge is positioned within a range along the side of the tank when viewed from the front, and the end does not protrude from the lower end of the side of the tank.

2. The oral cleaning device according to claim 1 , wherein at least a portion of the hinge is hidden by the liquid supply lid in a front view.

3. The oral cleaning device according to claim 2 , wherein the hinge is entirely hidden by the liquid supply lid in a front view.

4. a seal member that seals a gap between the liquid supply hole and the liquid supply lid is detachably attached between the liquid supply hole and the liquid supply lid; a groove for holding the sealing member is provided in either the liquid supply hole or the liquid supply lid; The oral cleaning device according to any one of claims 1 to 3, wherein the groove has a notch formed therein that is spaced apart from the outer peripheral surface of the sealing member.

5. An oral cleaning device as described in any one of claims 1 to 4, wherein the device main body is supported on the tank so as to be slidable between a housed state in which it is housed in the tank and a pulled-out state in which it is pulled out from the tank.

6. The oral cleaning device according to claim 1 , wherein the tank has a cylindrical body and a bottom wall that is detachably attached to the cylindrical body.

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