Water pick

Abstract

The utility model discloses an oral irrigator which comprises an oral irrigator main body, a water tank and a nozzle, the nozzle is arranged on the oral irrigator main body, the oral irrigator main body is arranged on the water tank, the water tank is provided with a visible window through which the position of liquid in the water tank can be observed, and a fixed water flow channel close to / attached to the inner wall of the water tank is arranged in the water tank. The water flow channel is positioned beside the visible window, is communicated with the nozzle through the oral irrigator main body, and is communicated with a water storage tank of the water tank; the water flow channel is fixedly arranged beside the visible window, namely, the water flow channel is hidden, a user cannot observe the water flow channel, and the appearance of the stamping device is cleaner and tidier.

Description

Technical Field

[0001] This utility model relates to a water flosser, which is applied in the field of oral hygiene technology. Background Technology

[0002] Water flossers, as oral hygiene tools, primarily use water jets to clean teeth and between teeth, especially effectively cleaning the interdental spaces, making them particularly popular. To achieve better cleaning results and ensure oral safety, current water flossers are generally used in conjunction with oral cleaning solutions.

[0003] Oral irrigators use high-pressure pulsed water generated by a water pump to rinse the mouth, removing small food debris and harmful bacteria adhering to teeth and gums. However, most current oral irrigators have a soft rubber tube directly connected to the main unit, leading to the water tank for suction. This method of directly lowering the tube into the tank is visually unappealing. Furthermore, when the tank is removed, the tube moves around, making it susceptible to contact with objects or liquids on the countertop, causing contamination. Additionally, the tube is visible through the viewing window when observing the water level in the tank, which is also unsightly.

[0004] Another type of water flosser is designed with a large cylindrical body that inserts directly into the water tank for water intake. Because the portion inserted into the tank is large, this significantly reduces the tank's capacity. Furthermore, the humid environment of the tank makes the device prone to mold and bacterial growth if left exposed for extended periods. Utility Model Content

[0005] In response to the aforementioned problem in the prior art where the soft rubber tube is visible when observing the liquid position in the water tank through the viewing window of the press, which is unsightly, this utility model provides a water flosser that is fixedly installed on the side of the viewing window through a water flow channel. In other words, the water flow channel is hidden, so the user will not be able to see the water flow channel, and the appearance of the press is cleaner and tidier.

[0006] The technical solution adopted by this utility model to solve its technical problem is: a water flosser, the water flosser includes a water flosser body, a water tank and a nozzle, the nozzle is disposed on the water flosser body, the water flosser body is disposed on the water tank, the water tank is provided with a viewing window for observing the liquid position in the water tank, and the water tank is provided with a fixed water flow channel close to / fitting the inner wall of the water tank, and the water flow channel is located next to the viewing window, the water flow channel is connected to the nozzle through the water flosser body, and the water flow channel is connected to the water storage tank of the water tank.

[0007] Furthermore, the main body of the oral irrigator is detachably mounted on the water tank.

[0008] Furthermore, the water flow channel includes a first channel and a second channel. The first channel is connected to the second channel. The first channel is arranged along the side wall of the water tank, and the second channel is arranged along the bottom wall of the water tank and located on the outside of the bottom wall of the water tank. The second channel is connected to the water storage tank of the water tank.

[0009] Furthermore, the oral irrigator also includes a column, on which the water flow channel is disposed, and the column is disposed near the inner wall of the water tank.

[0010] Furthermore, the column includes a column body and a cover plate. The column body is provided with a first flow channel along the extension direction of the column body, and the cover plate covers the first flow channel to form the first segment channel.

[0011] Furthermore, the water flosser also includes a flow channel bottom cover, on which a second flow channel is provided. The flow channel bottom cover is installed on the bottom wall of the water tank, and the flow channel bottom cover covers the second flow channel to form a second channel.

[0012] Furthermore, the flow channel bottom cover is disposed on the outer side of the bottom wall of the water tank, the bottom wall of the water tank is provided with a first mounting hole and a water flow hole, one end of the column is installed in the first mounting hole and connected to the second section of the channel, and the water flow hole connects the second section of the channel and the water storage cavity of the water tank.

[0013] Furthermore, the column includes a longitudinal column and a transverse column, and the longitudinal column and the transverse column are connected in an L-shape. The water flow channel passes through the longitudinal column and the transverse column, and the opening of the water flow channel flowing to the body of the water flosser is located on the transverse column.

[0014] Furthermore, the oral irrigator also includes a first sealing ring, which includes a first waterproof ring body and two mounting feet. The two mounting feet are disposed on the first waterproof ring body and are arranged opposite to each other. The opening of the water flow channel leading to the oral irrigator body is provided with a second mounting hole corresponding to the two mounting feet. The mounting feet are installed in the second mounting hole by interference fit, so that the first waterproof ring body can be fixedly installed in the opening of the water flow channel.

[0015] Furthermore, a third mounting hole is provided on the longitudinal column for bolt installation, so that the column can be fixedly installed on the water tank.

[0016] Furthermore, the viewing window includes a front viewing window unit and a rear viewing window unit, which are respectively disposed on the front and rear sides of the water tank.

[0017] Furthermore, the main body of the oral irrigator includes a housing, a control board, and a pumping assembly. The control board and the pumping assembly are both disposed within the housing. The pumping assembly is electrically connected to the control board, and the water outlet of the pumping assembly is connected to the nozzle. The water inlet of the pumping assembly is connected to the water flow channel through an opening disposed on the main body of the oral irrigator.

[0018] Furthermore, the oral irrigator also includes a liquid injection cap, and the water tank has a liquid injection port that is connected to the water storage chamber of the water tank. The liquid injection cap is detachably fitted onto the liquid injection port.

[0019] Furthermore, the oral irrigator also includes a second sealing ring, and the liquid filling cap has a protruding sealing block on the side facing the water tank. The sealing block has a second sealing groove, the second sealing ring is inserted into the second sealing groove, and the outer surface of the second sealing ring abuts against the edge of the liquid filling port.

[0020] Furthermore, the water tank is recessed inward near the injection port to form a receiving groove. When the injection cap is closed on the injection port, the injection cap is basically contained within the receiving groove.

[0021] Furthermore, the injection cap is provided with a first buckle near the sealing block, and the edge of the injection port is provided with a second buckle, with the first buckle engaging with the second buckle.

[0022] Furthermore, the oral irrigator also includes a bottom shell, which is detachably connected to the bottom of the water tank. The bottom shell has a semi-cylindrical capsule receiving cavity, which is used to allow the oral cleaning fluid capsule of the oral irrigator to be inserted and used. The bottom of the water tank has a liquid outlet that communicates with the capsule receiving cavity, which is used to allow the liquid outlet end of the oral cleaning fluid capsule of the oral irrigator to be installed.

[0023] Furthermore, the upper surface of the bottom shell protrudes upward near the liquid outlet to form a protrusion, and the liquid outlet is located at the top of the protrusion.

[0024] Furthermore, the protrusion is tapered.

[0025] Furthermore, the outer side of the main body of the water flosser is provided with a friction grip, and the friction grip is provided with friction texture.

[0026] Furthermore, the bottom outer side of the main body of the water flosser is provided with a mounting base, and the top of the water tank is provided with a mounting port. The mounting base can be detachably screwed onto the mounting port.

[0027] The beneficial effects of this utility model are as follows: This utility model provides a water flosser in which the water flow channel is located next to the viewing window, that is, the water flow channel is hidden and the user will not be able to see the water flow channel. Furthermore, since the water flow channel is fixed close to or attached to the inner wall of the water tank, and since the water flow channel is always inside the water tank, the water flow channel will not cause secondary pollution after the water tank is removed from the water flosser body. Attached Figure Description

[0028] Figure 1 This is a perspective view of the oral irrigator provided by this utility model;

[0029] Figure 2 This is an exploded view of the oral irrigator provided by this utility model;

[0030] Figure 3 This is a cross-sectional view of the water flow channel provided by this utility model;

[0031] Figure 4 This is a schematic diagram of the installation structure of the column and the bottom cover of the flow channel provided by this utility model.

[0032] Figure 5 This is a schematic diagram of the column structure provided by this utility model;

[0033] Figure 6 This is a structural schematic diagram of the column and water tank provided by this utility model;

[0034] Figure 7 This is a cross-sectional view of the oral irrigator provided by this utility model;

[0035] Figure 8 This utility model provides Figure 2 Another perspective of the exploded view; Detailed Implementation

[0036] To make the objectives, technical solutions, and effects of this utility model clearer and more explicit, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0037] Please see Figure 1-8This utility model provides a water flosser, which includes a main body 100, a water tank 200, and a nozzle 300. The nozzle 300 is disposed on the main body 100, and the main body 100 is disposed on the water tank 200. The water tank 200 has a viewing window 201 for observing the liquid level inside the water tank 200. A fixed water flow channel 202 is provided inside the water tank 200, close to / fitting against the inner wall of the water tank 200. The water flow channel 202 is located beside the viewing window 201. The water flow channel 202 is connected to the nozzle 300 through the main body 100 and is also connected to the water storage tank of the water tank 200. In other words, by positioning the water flow channel beside the viewing window, the water flow channel is designed to be hidden, so the user cannot observe the water flow channel, thus improving the overall appearance of the water flosser. More aesthetically pleasing and tidy, the main body 100 of the water flosser is preferably detachably mounted on the water tank 200. In existing technologies, the soft rubber tube moves around, and objects or other liquids on the rinsing station can easily come into contact with the soft rubber tube, causing dirt. Also, existing water flossers are designed with the main body directly inserted into the water tank as a large cylinder for water absorption. Long-term exposure of the main body to the humid environment of the water tank can easily lead to mold and bacterial growth. In contrast, the water flow channel is fixed close to or attached to the inner wall of the water tank. The water flow channel is always located inside the water tank. Therefore, after the water tank is removed from the main body of the water flosser, the solid structure formed by the water flow channel is not easily touched by the outside, thus preventing secondary contamination. It should be noted that the water flow channel can be a hollow cylinder, a rubber tube, or a solid structure directly cut into the side wall of the water tank.

[0038] In this embodiment, the water flow channel 202 includes a first channel 2021 and a second channel 2022. The first channel 2021 and the second channel 2022 are connected. The first channel 2021 is arranged along the side wall 203 of the water tank 200, and the second channel 2022 is arranged along the bottom wall 204 of the water tank 200 and is located on the outside of the bottom wall 204 of the water tank 200. The second channel 2022 is connected to the water storage tank of the water tank 200. Preferably, the second channel 2022 is located on the outside of the bottom wall 204 of the water tank 200, so that the liquid in the water tank can be used cleanly, avoiding the user forgetting to pour out the liquid in the water tank, and the liquid in the water tank will cause pollution if it stays in the water tank for too long.

[0039] In this embodiment, the oral irrigator also includes a column 400, and a water flow channel 202 is disposed on the column 400. The column 400 is disposed close to the inner wall of the water tank 200. The column 400 makes the water flow channel flow smoother, and the column is easy to install inside the water tank. When the oral irrigator body is installed on the water tank, the opening of the water flow channel on the column is easier to align with the opening of the water tank body.

[0040] In this embodiment, the column 400 includes a column body 401 and a cover plate 402. The column body 401 is provided with a first flow channel 4011 along the extension direction of the column body 401. The cover plate 402 covers the first flow channel 4011 to form a first channel 2021. The structure is simple and easy to assemble and set up. The column body 401 and the cover plate 402 can be fixed or detachable. Fixed installation can be achieved by ultrasonic welding, while detachable installation requires attention to sealing the gaps to make the water flow in the water channel smoother. It is preferable to use ultrasonic welding between the column body 401 and the cover plate 402.

[0041] In this embodiment, the oral irrigator also includes a flow channel bottom cover 500, on which a second flow channel 501 is provided. The flow channel bottom cover 500 is installed on the bottom wall of the water tank 200, and the flow channel bottom cover 500 covers the second flow channel 501 to form a second channel 2022. The second channel 2022 can be formed by installing the flow channel bottom cover 500. The structure is simple and the process is simple.

[0042] In this embodiment, the flow channel bottom cover 500 is disposed on the outer side of the bottom wall of the water tank 200. The bottom wall of the water tank 200 is provided with a first mounting hole 2041 and a water flow hole 2042. One end of the column 400 is installed in the first mounting hole 2041 and connected to the second section channel 2022. The water flow hole 2042 connects the second section channel 2022 and the water storage chamber 20 of the water tank 200. In this way, the liquid in the water tank can be used cleanly, avoiding the user forgetting to pour out the liquid in the water tank, and the liquid in the water tank will cause pollution if it stays in the water tank for too long.

[0043] In this embodiment, the column 400 includes a longitudinal column 403 and a transverse column 404, which are connected in an L-shape. The water flow channel 202 passes through the longitudinal column 403 and the transverse column 404, and the opening of the water flow channel 202 to the water flosser body 100 is located on the transverse column 404. This structure increases the service life of the column because the L-shape is more stable than a single longitudinal column. A single longitudinal column is prone to shaking and breakage and is not easy to fix. The L-shape has a larger surface area, and the size of the opening of the water flow channel 202 to the water flosser body 100 can be arbitrarily changed.

[0044] In this embodiment, the oral irrigator also includes a first sealing ring 600, which includes a first waterproof ring body 601 and two mounting feet 602. The two mounting feet 602 are disposed on the first waterproof ring body 601 and are arranged opposite to each other. The opening of the water flow channel 202 leading to the oral irrigator body 100 is provided with a second mounting hole corresponding to the two mounting feet 602. The mounting feet 602 are installed in the second mounting hole by interference fit, so that the first waterproof ring body 601 can be fixedly installed in the opening of the water flow channel 202, which facilitates the sealing of the opening of the water flow channel 202 leading to the oral irrigator body 100. The two mounting feet 602 make the sealing ring body more stable and prevent the sealing ring from falling off after the water tank is removed from the oral irrigator body, thus avoiding contamination of the water flow channel caused by sealing ring contamination.

[0045] In this embodiment, a third mounting hole 4031 is provided on the longitudinal column 403 for bolt installation, so that the column 400 can be fixedly installed on the water tank 200. Preferably, the third mounting hole is located at one end close to the main body of the water tank to facilitate the fixed installation of the column and the concealed design of the bolt.

[0046] In this embodiment, the viewing window 201 includes a front viewing window unit 2011 and a rear viewing window unit 2012. The front viewing window unit 2011 and the rear viewing window unit 2012 are respectively disposed on the front and rear sides of the water tank 200, allowing the user to observe the liquid level in the water storage cavity 20 from both the front and rear sides of the product, which is convenient for the user; in addition, the product's appearance is also more aesthetically pleasing. Preferably, the front viewing window unit 2011 is approximately a trapezoid with rounded corners, and the rear viewing window unit 2012 is approximately a trapezoid with rounded corners. The ratio of the area of ​​the front viewing window unit 2011 to the area of ​​the rear viewing window unit 2012 is approximately 1.2-1.8, and the front viewing window unit 2011 and the rear viewing window unit 2012 are disposed opposite to each other.

[0047] In this embodiment, the main body 100 of the oral irrigator includes a housing 101, a control board 102, and a pumping assembly 103. Both the control board 102 and the pumping assembly 103 are disposed inside the housing 101. The pumping assembly 103 is electrically connected to the control board 102, and the water outlet 1031 of the pumping assembly 103 is connected to the nozzle 300. The water inlet 1032 of the pumping assembly 103 is connected to the water flow channel 202 through an opening 104 provided on the main body 100 of the oral irrigator. In other words, all the necessary components are disposed inside the housing to form the main body of the oral irrigator. Control buttons can also be provided on the main body of the oral irrigator, such as control buttons for switching the water pump on or off, or control buttons for adjusting the water flow. The control buttons are connected to the control board. In other words, all the circuits and operating devices are integrated on the main body of the oral irrigator, making the structure clear and easy to install and maintain.

[0048] In this embodiment, the oral irrigator also includes a liquid filling cap 700. The water tank 200 has a liquid filling port 205 connected to the water storage chamber 20 of the water tank 200. The liquid filling cap 700 is detachably fitted onto the liquid filling port 205. With this structure, opening the liquid filling cap 700 allows water to be injected into the water storage chamber 20 through the liquid filling port 205, facilitating easy water replenishment for the user. During use, the liquid filling cap 700 is closed onto the liquid filling port 205 to prevent water leakage and improve the product's sealing performance.

[0049] In this embodiment, the oral irrigator also includes a second sealing ring 800. The liquid filling cap 700 has a protruding sealing block 701 on the side facing the water tank 200. The sealing block 701 has a second sealing groove 7011. The second sealing ring 800 is inserted into the second sealing groove 7011. The outer surface of the second sealing ring 800 abuts against the edge of the liquid filling port 205.

[0050] In this embodiment, the water tank 200 is recessed inward near the injection port 205 to form a receiving groove 206. When the injection cap 700 is closed on the injection port 205, the injection cap 700 is basically contained in the receiving groove 206. With the above structure, when the injection cap 700 is closed on the injection port 205, the outer surface of the second sealing ring 800 abuts against the edge of the injection port 205, and the inner surface and upper and lower surfaces of the second sealing ring 800 abut against the second sealing groove 7011. This can further improve the sealing performance between the injection cap 700 and the injection port 205 and prevent water from flowing out along the gap between the injection cap 700 and the injection port 205.

[0051] In this embodiment, the liquid filling cap 700 is provided with a first buckle 702 near the sealing block 701, and a second buckle 703 is provided at the edge of the liquid filling port 205. The first buckle 702 is engaged with the second buckle 703. With the above structure, when the liquid filling cap 700 is closed on the liquid filling port 205, the first buckle 702 is engaged with the second buckle 703, thereby connecting the free end of the liquid filling cap 700 to the water tank, preventing the rotation of the liquid filling cap 700, and improving the stability of the product.

[0052] In this embodiment, the oral irrigator also includes a bottom shell 900, which is detachably connected to the bottom of the water tank 200. The bottom shell 900 has a semi-cylindrical capsule receiving cavity 901, which is used to allow the oral cleaning fluid capsule 902 of the oral irrigator to be inserted and used. The bottom of the water tank 200 has a liquid outlet 207 that communicates with the capsule receiving cavity 901. The liquid outlet 207 is used to allow the liquid outlet end 9021 of the oral cleaning fluid capsule 902 of the oral irrigator to be installed. With the above structure, the oral irrigator is usually designed to be narrow at the top and wide at the bottom, with a larger diameter at the bottom. The capsule receiving cavity 901 is set in the bottom shell 900, which can accommodate a larger size capsule receiving cavity 901, allowing the use of a larger volume oral cleaning fluid capsule 902, thereby extending the product's usage time, reducing the frequency of replacing the oral cleaning fluid capsule 902, and making it convenient to use. Furthermore, the oral cleaning solution capsule 902 is housed within the bottom shell 900, allowing users to dispense the oral cleaning solution simply by squeezing the capsule 902 with their palm, resulting in a superior user experience. The length-to-width ratio of the capsule receiving cavity 901 is approximately 1.5-2.0, preferably 1.8. This design effectively accommodates the larger oral cleaning solution capsule 902 while also providing sufficient space within the bottom shell 900 to accommodate other components, demonstrating a rational design.

[0053] In this embodiment, the upper surface of the bottom shell 900 protrudes upward near the liquid outlet 207 to form a protrusion 2071. The liquid outlet 207 is located at the top of the protrusion 2071. By setting the above structure, the liquid outlet 207 is located at the top of the protrusion 2071, which increases the contact area between the oral cleaning liquid that passes through the liquid outlet 207 and the water. The oral cleaning liquid quickly diffuses into the water in the water storage cavity 20, making the product cleaning effect better and more stable.

[0054] In this embodiment, the protrusion 2071 is cone-shaped, resembling the effect of a volcanic eruption, which is very stylish.

[0055] In this embodiment, the outer side of the water flosser body 100 is provided with a friction grip 105, and the friction grip 105 is provided with friction texture. Through the above structure, the friction texture at the friction grip 105 can improve the coefficient of friction, making the user hold the product more stable, and at the same time, making the product look more beautiful.

[0056] In this embodiment, the bottom outer side of the water flosser body 100 is provided with a mounting base 106, and the top of the water tank 200 is provided with a mounting port 208. The mounting base 106 can be detachably screwed into the mounting port 208. The structure is simple and easy for users to disassemble.

[0057] In summary, the oral irrigator in this example features a concealed water flow channel design for the water tank, with part of it running along the inner wall of the tank and part inside the bottom cover. This eliminates the need for a flexible tubing and avoids the problem of the device being directly inserted into the tank. Overall, the water flow channel is more aesthetically pleasing; after removing the tank, it is less likely to be touched from the outside, thus preventing secondary contamination. Furthermore, it includes a slot for the oral cleaning solution capsule 902, which connects to the water tank, allowing users to easily dispense oral cleaning solution into the tank.

[0058] It should be understood that the application of this utility model is not limited to the examples above. Those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. An oral irrigator characterized by, The oral irrigator comprises an oral irrigator body (100), a water tank (200) and a nozzle (300), the nozzle (300) is arranged on the oral irrigator body (100), the oral irrigator body (100) is arranged on the water tank (200), the water tank (200) is provided with a visual window (201) for observing the liquid level in the water tank (200), and the water tank (200) is provided with a fixed water flow channel (202) close to the inner wall of the water tank (200), and the water flow channel (202) is located beside the visual window (201), the water flow channel (202) is communicated with the nozzle (300) through the oral irrigator body (100), and the water flow channel (202) is communicated with the water storage tank of the water tank (200).

2. The waterpik of claim 1, wherein, The oral irrigator body (100) is detachably arranged on the water tank (200).

3. The waterpik of claim 1, wherein, The water flow channel (202) comprises a first section channel (2021) and a second section channel (2022), the first section channel (2021) is communicated with the second section channel (2022), the first section channel (2021) is arranged along the side wall (203) of the water tank (200), the second section channel (2022) is arranged along the bottom wall (204) of the water tank (200) and outside the bottom wall (204) of the water tank (200), and the second section channel (2022) is communicated with the water storage tank of the water tank (200).

4. The waterpik of claim 3, wherein, The oral irrigator further comprises a stand column (400), the water flow channel (202) is arranged on the stand column (400), and the stand column (400) is arranged close to the inner wall of the water tank (200).

5. The oral irrigator of claim 4, wherein, The stand column (400) comprises a stand column body (401) and a cover sheet (402), the stand column body (401) is provided with a first flow channel (4011) along the extension direction of the stand column body (401), and the cover sheet (402) covers the first flow channel (4011) to form the first section channel (2021).

6. The oral irrigator of claim 5, wherein, The oral irrigator further comprises a flow channel bottom cover (500), the flow channel bottom cover (500) is provided with a second flow channel (501), the flow channel bottom cover (500) is arranged on the bottom wall of the water tank (200), and the flow channel bottom cover (500) covers the second flow channel (501) to form the second section channel (2022).

7. The oral irrigator of claim 6, wherein, The flow channel bottom cover (500) is arranged outside the bottom wall of the water tank (200), the bottom wall of the water tank (200) is provided with a first mounting hole (2041) and a water flow through hole (2042), one end of the stand column (400) is arranged in the first mounting hole (2041) and communicated with the second section channel (2022), and the water flow through hole (2042) is communicated with the second section channel (2022) and the water storage cavity of the water tank (200).

8. The oral irrigator of claim 4, wherein, The stand (400) comprises a longitudinal column (403) and a transverse column (404), the longitudinal column (403) and the transverse column (404) are connected in an L shape, the water flow channel (202) penetrates through the longitudinal column (403) and the transverse column (404), and the opening of the water flow channel (202) flowing to the oral irrigator body (100) is located on the transverse column (404).

9. The oral irrigator of claim 4, wherein, The oral irrigator further comprises a first sealing ring (600), the first sealing ring (600) comprises a first waterproof ring body (601) and two mounting feet (602), the two mounting feet (602) are arranged on the first waterproof ring body (601), the two mounting feet (602) are oppositely arranged, the opening of the water flow channel (202) flowing to the oral irrigator body (100) is provided with a second mounting hole corresponding to the two mounting feet (602), and the mounting feet (602) are mounted in the second mounting hole through interference fit, so that the first waterproof ring body (601) can be fixedly mounted in the opening of the water flow channel (202).

10. The waterpik of claim 1, wherein, The oral irrigator further comprises a bottom shell (900), the bottom shell (900) is detachably connected to the bottom of the water tank (200), the bottom shell (900) is provided with a semi-cylindrical capsule accommodating cavity (901), the capsule accommodating cavity (901) is used for allowing an oral cleaning liquid capsule (902) of the oral irrigator to be inserted for use, the bottom of the water tank (200) is provided with a liquid outlet (207) in communication with the capsule accommodating cavity (901), the liquid outlet (207) is used for allowing a liquid outlet end (9021) of the oral cleaning liquid capsule (902) to be mounted, and the upper surface of the bottom shell (900) is upwardly protruded to form a protruding portion (2071) near the liquid outlet (207), and the liquid outlet (207) is arranged on the top of the protruding portion (2071).

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