Oral irrigation device and oral irrigator

Abstract

This application provides an oral irrigation device and an oral irrigator. The internal cavity of the device housing includes a liquid storage cavity body. The output shaft of the motor has a first flow path through which it is positioned. The motor, pump mechanism, and liquid storage cavity body are arranged sequentially along the first axial direction. The liquid inlet and outlet ends of the pump mechanism are located at one end along the second axial direction of the pump mechanism, and the liquid inlet and outlet ends of the pump mechanism are located on the side closer to the liquid storage cavity body along the first axial direction of the pump mechanism. The first axial direction intersects the second axial direction. A connecting member is located on one side of the second axial direction of the pump mechanism and includes a third flow path connecting the liquid storage cavity body and the liquid inlet end of the pump mechanism, and a second flow path connecting the liquid outlet end of the pump mechanism and the first flow path. The oral irrigation device and oral irrigator provided in this application have the advantages of improving the efficiency of the pump mechanism and reducing the impact force on the output shaft of the motor.

Description

Technical Field

[0003] , ,

[0001] This application claims the priority of Chinese Patent Application No. 202410609314.5, titled "Oral Cleaning Device and Oral Cleaner", filed with the Chinese Patent Office on May 13, 2024, the content of which is hereby incorporated by reference in its entirety into this application. This application also claims the priority of Chinese Patent Application No. 202421050074.1, titled "Oral Cleaning Device and Oral Cleaner", filed with the Chinese Patent Office on May 13, 2024, the content of which is hereby incorporated by reference in its entirety into this application. This application also claims the priority of Chinese Patent Application No. 202410902695.6, titled "Oral Cleaning Device and Oral Cleaner", filed with the Chinese Patent Office on July 5, 2024, the content of which is hereby incorporated by reference in its entirety into this application. Embodiments of this application relate to the technical field of oral cleaning appliances, and in particular, to oral cleaning devices and oral cleaners.

Background Art

[0002] As people pay more attention to oral care, electric toothbrushes and water flossers have gradually become common oral care tools in households. Electric toothbrushes use a motor to vibrate the brush head at high frequency, instantly decompose toothpaste into fine foam, and deeply clean the gaps between teeth. Water flossers utilize the impact force of a high-speed water column by discharging a high-speed water column with a certain pressure by a water pump to clean teeth and interdental spaces.

[0003] The related oral irrigator can combine toothbrushing and teeth rinsing functions. Specifically, the related oral irrigator may consist of a device body, a toothbrush, a motor, a water pump, and a water tank. The toothbrush is located in the head of the device body, and the motor, water pump, and water tank are located inside the device body. The motor shaft of the motor has a channel for water to flow through, and this channel communicates with the water tank. The toothbrush has a cavity and an outlet communicating with the cavity, and the motor shaft of the motor is provided passing through the cavity, and the channel of the motor shaft of the motor communicates with the outlet, thereby causing the liquid in the water tank to be ejected from the outlet through the channel by the action of the water pump.

[0004] However, since both the motor and the water pump generate vibrations during operation, the reliability of the connection between the water pump and the flow path on the output shaft is low, making it very prone to detachment. [Overview of the project]

[0005] The objective of the embodiments of this application is to provide an oral irrigation device and oral irrigator that can solve the problem of low connection reliability and high susceptibility to detachment of the conduit connecting the water pump and the flow path of the output shaft.

[0006] To achieve the above objective, one embodiment of the present application provides an oral irrigation device. This oral irrigation device includes a housing and a motor, a pump mechanism, and a connecting member provided in an internal cavity of the housing. The internal cavity of the housing includes a liquid storage cavity body. The output shaft of the motor has a first flow path through which it is arranged. The motor, the pump mechanism, and the liquid storage cavity body are arranged in order along a first axial direction. The liquid inlet and liquid outlet ends of the pump mechanism are located at one end along a second axial direction of the pump mechanism, and the liquid inlet and liquid outlet ends of the pump mechanism are located on the side closer to the liquid storage cavity body along the first axial direction of the pump mechanism. The first axial direction intersects the second axial direction. The connecting member is located on one side of the pump mechanism along the second axial direction and includes a third flow path connecting the liquid storage cavity body and the liquid inlet end of the pump mechanism, and a second flow path connecting the liquid outlet end of the pump mechanism and the first flow path.

[0007] Optionally, the second flow path includes a first flow path segment and a second flow path segment that communicate sequentially. The first flow path segment communicates with the liquid discharge end and extends along the first axial direction, with a gap between the first flow path segment and the first flow path in the second axial direction. The second flow path segment communicates with the first flow path segment and the first flow path, and the second flow path segment includes a first arc segment, with the first arc segment and the first flow path segment transitioning in an arc shape.

[0008] Optionally, the first arc segment is higher than the pump mechanism and has an arc center that points toward the pump mechanism.

[0009] Optionally, the second channel segment further includes a second arc segment, and the second arc segment and the first channel transition in an arc shape.

[0010] Optionally, the second arc segment has an arc center that points toward the motor.

[0011] Optionally, the connecting member includes a first connecting portion and a second connecting portion connected to each other. The first connecting portion includes the first flow channel segment and a reversing cavity communicating with the first flow channel segment, the reversing cavity having a first inner arcuate surface and an opening in the first axial direction. At least a portion of the second connecting portion is positioned within the reversing cavity from the opening of the reversing cavity and has a second inner arcuate surface, and the first and second inner arcuate surfaces together form a surrounding area of ​​the second flow channel segment.

[0012] Optionally, the second connection includes a cover plate segment, a projection segment, and a barrier plate segment, the projection segment and the barrier plate segment being connected to both sides of the cover plate segment along the first axial direction, respectively. The cover plate segment seals and covers the reversal cavity, the barrier plate segment is located within the reversal cavity and has a second internal arc surface. The cover plate segment is provided with a through hole, the projection segment surrounds the outside of the through hole, and the internal cavity of the projection segment communicates with the through hole. The output shaft is positioned through the internal cavity of the projection segment and the through hole, and a sealing member is provided between the output shaft and the internal cavity wall of the projection segment.

[0013] Optionally, the pump mechanism includes a liquid inlet, a liquid outlet, and a power outlet. The pump mechanism can pump liquid into the pump chamber of the pump mechanism from the liquid inlet and discharge it from the liquid outlet. The second end cap portion of the liquid outlet and the first end cap portion of the liquid inlet are integrated with the connecting member.

[0014] Optionally, the system further includes a mounting member, which is vibration-damping connected to the housing, and the motor and the power ends of the pump mechanism are mounted to the mounting member at intervals. The second valve portion of the liquid discharge end is integrated with the mounting member, and the second end cap portion of the liquid discharge end is integrated with the connecting member. The power ends, at least a portion of the connecting member, and at least a portion of the mounting member are arranged in order along the liquid discharge direction of the liquid discharge end and connected by fastening members.

[0015] Optionally, the system includes a toothbrush and the oral irrigation device described above. The toothbrush has a cavity and an outlet communicating with the cavity. The output shaft of the motor of the oral irrigation device is connected to the toothbrush and moves the toothbrush. A first flow path of the motor's output shaft communicates with the cavity of the toothbrush.

[0016] In the oral irrigation device and oral irrigator provided by the embodiments of this application, the motor, pump mechanism, and liquid storage cavity are arranged sequentially along a first axial direction to shorten the longitudinal length of the liquid storage cavity and facilitate cleaning of the water tank by the user. The lateral width of the housing can also be narrowed to facilitate gripping by the user. Furthermore, by positioning the liquid inlet and outlet ends of the pump mechanism closer to the liquid storage cavity along the first axial direction of the pump mechanism, the distance between the liquid inlet end of the pump mechanism and the bottom of the liquid storage cavity is shortened, making it easier for the pump mechanism to draw liquid from the liquid storage cavity and improving the efficiency of the pump mechanism. In addition, the distance between the liquid outlet end of the pump mechanism and the first flow path is increased, reducing the impact force on the motor output shaft by the liquid at the liquid outlet end of the pump mechanism and improving connection stability. Furthermore, since both the second and third flow channels are integrated into the connecting member, the number of parts required for assembly is reduced, improving assembly efficiency. In addition, the overall structural strength of the second and third flow channels is improved, resisting the impact force of the water flow. Moreover, the connection stability between the liquid storage cavity and the second flow channel, the second flow channel and the pump mechanism, the pump mechanism and the third flow channel, and the third flow channel and the first flow channel of the output shaft is improved, reducing the risk of liquid leakage at the connection points. [Brief explanation of the drawing]

[0017] [Figure 1] This is a schematic diagram of a related oral irrigator. [Figure 2] This is a schematic diagram of an oral irrigator provided by an embodiment of this application. [Figure 3] Figure 2 is a longitudinal cross-sectional view of the oral irrigator shown. [Figure 4] Figure 2 is a partial view of another longitudinal cross-section of the oral irrigator shown. [Figure 5] This is an internal layout diagram of the oral irrigation device provided by the embodiment of this application. [Figure 6] This is another internal layout diagram of the oral irrigation device provided by the embodiments of this application. [Figure 7]It is a cross-sectional view of the partition member shown in FIG. 4. [Figure 8] It is a partial cross-sectional view of the air flow groove of the housing provided by the embodiment of the present application. [Figure 9] It is a partial cross-sectional view of the air flow groove of another housing provided by the embodiment of the present application. [Figure 10] It is a partial cross-sectional view of the non-air flow groove of the housing provided by the embodiment of the present application. [Figure 11] It is a schematic diagram of the lid body and the third sealing ring provided by the embodiment of the present application. [Figure 12] It is an exploded view of the oral irrigator provided by the embodiment of the present application. [Figure 13] It is an exploded view of the motor, connection member, mounting member and circuit board shown in FIG. 12. [Figure 14] It is an assembled three-dimensional view of the mounting member, connection member and pump mechanism shown in FIG. 13. [Figure 15] It is an exploded view of the connection member, mounting member and motor of the oral irrigator provided by the embodiment of the present application. [Figure 16] It is an exploded view of the pump mechanism, mounting member and connection member shown in FIG. 15. [Figure 17] It is a partial schematic diagram of FIG. 3. [Figure 18] It is an exploded view of the connection member provided by the embodiment of the present application.

Embodiments for Carrying out the Invention

[0018] Figure 1 is a schematic diagram of the relevant oral irrigator. Referring to Figure 1, the main body of the relevant oral irrigator is of a long, slender type, with the water tank located on the right side of the main body and the motor, water pump, and battery located on the left side. The vertical length of the water tank is almost equal to the vertical length of the main body, and the small diameter of the water tank makes it difficult for the user to clean the inner wall of the water tank. Furthermore, the water pump is located in the left-center position of the main body, and the input terminal a and output terminal b of the water pump are located at the top of the water pump. As a result, the vertical distance between the input terminal a of the water pump and the bottom of the water tank becomes too long, resulting in a relatively long water channel between the two, which is disadvantageous for the water pump in drawing liquid from the water tank.

[0019] To address the above technical problems, the inventors of this application considered facilitating the cleaning of the water tank by arranging the water tank at the bottom of the main body of the device and the motor, water pump, etc., above the water tank, thereby shortening the vertical length of the water tank. Furthermore, narrowing the horizontal width of the main body of the device also makes it easier for the user to grasp. However, this arrangement reduces the volume of the water tank. In order to maximize the volume of the water tank, the inventors of this application attempted to shorten the vertical length of the water pump. Specifically, the input and output ends of the water pump can be changed from being positioned above the water pump to being positioned below and to the side of the water pump. In this way, not only is the vertical depth of the submersible water tank increased, but the distance between the input end of the water pump and the bottom of the water tank is shortened, improving the suction effect of the water pump. In addition, by utilizing the space to the side of the water pump to arrange a directional channel, it is possible to communicate the output end of the water pump, which is positioned below and to the side, with the flow path of the output shaft of the motor, which is positioned above. In this way, by rationally arranging the water tank, water pump, and motor while maintaining the slender appearance of the main unit, not only is the volume of the submersible water tank increased, but the suction effect of the pump is also improved.

[0020] To further clarify the purpose, technical solutions, and advantages of the embodiments of this application, the technical solutions of the embodiments will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Naturally, the embodiments described herein represent only a portion, not all, of the embodiments of this application.

[0021] All other embodiments that a person skilled in the art could obtain based on the embodiments of this application without creative work should be included within the scope of protection of this application. Where there is no contradiction, the following embodiments and features thereof can be combined with each other.

[0022] Figure 2 is a schematic diagram of an oral irrigator provided by an embodiment of the present application, and Figure 3 is a longitudinal cross-sectional view of one of the oral irrigators shown in Figure 2. Referring to Figures 2 and 3, the oral irrigator provided by an embodiment of the present application may include an oral irrigation device 1000 and a cleaning accessory 2000. Here, the cleaning accessory 2000 may be a component capable of cleaning the oral cavity, such as a toothbrush head, a flushing head, or a flushing-brushing head. Figure 3 illustrates that the cleaning accessory 2000 is a flushing-brushing head. The cleaning accessory 2000 may include a brush body 2100, which may have a cavity 2200 and an outlet 2300 communicating with the cavity 2200.

[0023] Continuing to refer to Figure 3, the oral irrigator 1000 may include a housing 100 and a power unit. The power unit may include a power assembly and a connecting member 400. Here, to facilitate gripping by the user, the shape of the housing 100 may be an elongated cylinder. The shape of the cross section of the housing 100 may be circular or non-circular (e.g., D-shaped, elliptical, polygonal, etc.). The first axis X is the center line of the housing 100. That is, the center point of each cross section of the housing 100 may all be on the first axis X. The housing 100 may extend along the direction of the first axis X (e.g., the vertical direction in Figure 3), and the housing 100 may have an upper end 160 and a lower end 170 that are positioned opposite each other along the direction of the first axis X. The interior of the housing 100 may be hollow, thereby allowing the housing 100 to have an internal cavity.

[0024] The power assembly may be located within an internal cavity of the housing 100 and may include a motor 200 and a pump mechanism 300. To maintain the elongated shape of the housing 100, the motor 200 and the pump mechanism 300 may be arranged sequentially along the first axis X direction. The motor 200 may be located closer to the upper end 160 of the housing 100 than the pump mechanism 300, such that the output shaft 210 of the motor 200 penetrates the outside of the upper end 160 of the housing 100 and is connected to a cleaning accessory 2000 (e.g., a toothbrush head, a flushing and brushing integrated head, or other accessory with brush bristles) to move the cleaning accessory 2000 (as shown in Figure 3, the motor 200 is located above the pump mechanism 300). The motor 200 may be a rotary motor 200 capable of rotating the cleaning accessory 2000. Alternatively, the motor 200 may be a vibratory motor 200 (e.g., an ultrasonic motor 200) capable of oscillating the cleaning accessory 2000 at a high frequency. The motor 200 may include a motor body 220 and an output shaft 210. The axis of the output shaft 210 may coincide with or be spaced parallel to the first axis X of the housing 100. The output shaft 210 may be positioned to pass through the motor body 220 along its axial direction. The axial upper end 160 of the output shaft 210 passes through the upper end 160 of the motor body 220 and is connected to the cleaning accessory 2000, which can move the cleaning accessory 2000.

[0025] The output shaft 210 may have a first flow path 211 that penetrates the output shaft 210 along its axial direction. The internal cavity of the housing 100 may include a liquid storage cavity body 120. The liquid storage cavity body 120 can be used to store liquid. Figure 4 is a partial view of another longitudinal section of the oral irrigator shown in Figure 2. Referring to Figures 3 and 4, the connecting member 400 may have a second flow path 410 and a third flow path 420. Note that the third flow path 420 and the second flow path 410 are not in the same longitudinal section, so the second flow path 410 is visible in the cross-section shown in Figure 3, and the third flow path 420 is visible in Figure 4.

[0026] The third channel 420 can connect the liquid storage cavity 120 to the liquid inlet end 310 of the pump mechanism 300, and the second channel 410 can connect the liquid outlet end 320 of the pump mechanism 300 to the first channel 211. In this way, since both the second channel 410 and the third channel 420 are integrated into the connecting member 400, the number of parts required for assembly is reduced, improving assembly efficiency, and the overall structural strength of the second channel 410 and the third channel 420 is improved to withstand the impact force of the water flow. Furthermore, the connection stability between the liquid storage cavity 120 and the second channel 410, the second channel 410 and the pump mechanism 300, the pump mechanism 300 and the third channel 420, and the third channel 420 and the first channel 211 of the output shaft 210 is improved, reducing the risk of liquid leakage at the connection points.

[0027] If the cleaning accessory 2000 is an accessory such as a flushing head or a flushing / brushing integrated head, which has a cavity 2200 and an outlet 2300 communicating with the cavity 2200, and is capable of ejecting liquid from the outlet 2300, then the first flow path 211 of the output shaft 210 can communicate with the outlet 2300 through the cavity 2200 of the cleaning accessory 2000. The arrows in Figures 3 and 4 indicate the direction of liquid flow. Referring to the arrows in Figures 3 and 4, when the oral irrigator performs its flushing function, the pump mechanism 300 guides the liquid in the liquid storage cavity 120 through the third channel 420, the liquid inlet end 310 of the pump mechanism 300, into the pump chamber of the pump mechanism 300, then through the liquid outlet 320, the second channel 410, into the first channel 211, and then through the cavity 2200 of the cleaning accessory 2000, and out through the outlet 2300.

[0028] Referring to Figure 3, the power assembly (motor 200 and pump mechanism 300) and the liquid storage cavity body 120 may be arranged sequentially along the first axis X direction to shorten the longitudinal length of the liquid storage cavity body 120 and facilitate cleaning of the water tank by the user (as shown in Figure 1, the power assembly is located above the liquid storage cavity body 120). The lateral width of the housing 100 may also be narrowed to facilitate gripping by the user. Here, the pump mechanism 300 may be positioned closer to the liquid storage cavity body 120 than the motor 200 to facilitate the pump mechanism 300 in drawing liquid from the liquid storage cavity body 120.

[0029] To increase the volume of the liquid storage cavity 120 by increasing its vertical height, as shown in Figures 3 and 4, optionally, the liquid discharge end 320 of the pump mechanism 300 may discharge the liquid along the second axis Y, and both the liquid inlet end 310 and the liquid discharge end 320 of the pump mechanism 300 may be located on one side of the pump mechanism 300 along the second axis Y. Here, the second axis Y intersects the first axis X. In this way, the length of the pump mechanism 300 in the direction of the first axis X is shortened, the length of the liquid storage cavity 120 in the direction of the first axis X is increased, and the volume of the liquid storage cavity 120 is further increased. Furthermore, the direction of the second axis Y is perpendicular to the direction of the first axis X. As shown in Figures 3 and 4, the first axis X is in the vertical direction, the second axis Y is in the horizontal direction, and both the liquid inlet end 310 and the liquid outlet end 320 of the pump mechanism 300 are located on the left side of the pump mechanism 300.

[0030] In order to make effective use of the lateral space of the pump mechanism 300, the connecting member 400 may also be connected to one side of the pump mechanism 300 along the second axis Y direction (for example, the left side in Figures 3 and 4) such that the third flow path 420 and at least a portion of the second flow path 410 are located on one side of the pump mechanism 300 along the second axis Y direction (for example, the left side in Figures 3 and 4). The connection point between the connecting member 400 and the liquid storage cavity 120 may be located on one side of the pump mechanism 300 along the second axis Y direction (for example, the left side in Figure 4) such that the distance between the liquid inlet end 310 of the pump mechanism 300 and the liquid storage cavity 120 is shortened in order to facilitate the pump mechanism 300 from drawing liquid from the liquid storage cavity 120.

[0031] Furthermore, in the direction of the first axis X, the liquid inlet end 310 and the liquid outlet end 320 of the pump mechanism 300 may be closer to the liquid storage cavity 120. That is, the liquid inlet end 310 and the liquid outlet end 320 of the pump mechanism 300 are positioned at one end closer to the liquid storage cavity 120 along the first axis X of the pump mechanism 300. In this way, the distance between the liquid inlet end 310 of the pump mechanism 300 and the bottom of the liquid storage cavity 120 is shortened, making it easier for the pump mechanism 300 to suck the liquid from the liquid storage cavity 120. Also, the distance between the liquid outlet end 320 of the pump mechanism 300 and the first flow path 211 is increased, reducing the impact force on the output shaft 210 of the motor 200 by the liquid at the liquid outlet end 320 of the pump mechanism 300, and improving connection stability.

[0032] The mouthwash device 1000 provided by embodiments of this application may further include an energy source 710. The energy source 710 may be a device capable of supplying electrical energy to the motor 200, the pump mechanism 300, and the electrical devices on the circuit board 720, such as a rechargeable battery or storage battery. In order to maintain the elongated shape of the mouthwash device 1000, the energy source 710 may be located on the side of the pump mechanism 300 away from the motor 200 (for example, the lower side in Figures 3 and 4) along the first axis X direction. At least a portion of the energy source 710 is positioned alongside at least a portion of the liquid storage cavity body 120. In other words, at least a portion of the planar projection of at least a portion of the energy source 710 along the first axis X coincides with the planar projection of the liquid storage cavity body 120 along the first axis X. That is, both the energy source 710 and the liquid storage cavity body 120 occupy the lower end 170 of the housing 100.

[0033] Figure 5 is an internal layout diagram of an oral irrigator provided by an embodiment of the present application. Referring to Figures 3 to 5, exemplary, the liquid storage cavity body 120 may enclose the energy source 710 on one side in the first axial direction. For example, in Figure 5, the liquid storage cavity body 120 may enclose the outer surface and bottom surface of the energy source 710. That is, in the first axial direction, the energy source 710 may have opposing top and bottom surfaces, and the housing 100 may have opposing inner top and inner bottom surfaces. There is a gap between the bottom surface of the energy source 710 and the inner bottom surface of the housing 100, and at least a portion of the liquid storage cavity is located between the bottom surface of the energy source 710 and the inner bottom surface of the housing 100. In other words, the liquid storage cavity body 120 may be formed in a "concave" shape, and the energy source 710 may be located in the concave part of the concave liquid storage cavity body 120. Alternatively, the liquid storage cavity 120 may enclose only the outer surface of the energy source 710. That is, the bottom surface of the energy source 710 abuts against the inner bottom surface of the housing 100. In other words, at least a portion of one end of the energy source 710 extending along the first axis X direction is enclosed by the liquid storage cavity 120.

[0034] Figure 6 is another internal layout diagram of an oral irrigator provided by an embodiment of the present application. Referring to Figure 6, as another example, a space for an energy source 710 is formed between the liquid storage cavity 120 and the inner housing wall of the housing 100. In other words, a space for the energy source 710 is formed between the partition member 600 and the inner housing wall of the housing 100. For example, in Figure 6, the liquid storage cavity 120 may enclose the bottom surface of the energy source 710 and at least a portion of the outer surface of the energy source 710. That is, there is a gap between the bottom surface of the energy source 710 and the inner bottom surface of the housing 100, and at least a portion of the liquid storage cavity is located between the bottom surface of the energy source 710 and the inner bottom surface of the housing 100. In other words, the liquid storage cavity 120 may be formed in an L shape, and the energy source 710 may be located in a notch of the L-shaped liquid storage cavity 120. Alternatively, the liquid storage cavity 120 may enclose only the outer surface of the energy source 710. In other words, the bottom surface of the energy source 710 abuts against the inner bottom surface of the housing 100.

[0035] The liquid storage cavity 120 may be formed by a housing 130 independent of the housing 100. The liquid storage cavity 120 may be detachably connected to the housing 100 to allow the user to remove the liquid storage cavity 120 from the housing 100 for cleaning. Alternatively, the liquid storage cavity 120 may be formed by the inner housing wall of the housing 100 and a partition member 600. Specifically, referring to Figures 5 and 6, the oral irrigator 1000 provided by the embodiment of this application may further include a partition member 600. The partition member 600 may be located within the internal cavity of the housing 100, and may partition the internal cavity of the housing 100 into a power cavity 110 and the liquid storage cavity 120. Here, the motor 200, the pump mechanism 300 and the energy source 710 may all be located within the power cavity 110.

[0036] Optionally, at least a portion of the planar projection of the power cavity 120 along the first axis X does not overlap with the planar projection of the liquid storage cavity 110 along the first axis X. Alternatively, at least a portion of the planar projection of the liquid storage cavity 110 along the first axis X does not overlap with the planar projection of the power cavity 120 along the first axis X.

[0037] Optionally, at least a portion of the planar projection of the power cavity 120 along the first axis X overlaps with the planar projection of the liquid storage cavity 110 along the first axis X.

[0038] As shown in Figures 5 and 6, the partition member 600 can be formed to surround the power cavity body 110 together with the inner housing wall of the housing 100 located on one side along the first axis X direction of the partition member 600 (for example, the left side in Figures 5 and 6), and the partition member 600 can be formed to surround the liquid storage cavity body 120 together with the inner housing wall of the housing 100 located on the other side along the first axis X direction of the partition member 600 (for example, the right side in Figures 5 and 6).

[0039] Illustratively, referring to Figures 4 and 7, the partition member 600 is detachably connected to the housing 100, so that the user can remove the partition member 600 from the housing 100 for cleaning. For sealing purposes, a first sealing member 810 may be filled between the partition member 600 and the housing 100. For example, a first sealing groove may be provided on the outer wall of the partition member 600, and a first sealing cavity may be formed between the first sealing groove and the inner housing wall of the housing 100. The first sealing member 810 may be a first sealing ring. The first sealing ring may be sealed within the first sealing cavity to prevent liquid seepage. The partition member 600 may also be detachably connected to the housing 100 by an engagement connection. And / or, the partition member 600 is fastened to a connecting member 400 (or a mounting member 500 described later) by fastening members such as bolts. Furthermore, the connection points of the fastening members may be waterproofed. For example, referring to Figure 12, the partition member 600 may have a blind hole, and the connecting member 400 or mounting member 500 may be provided with a screw hole. The first fastening member 921 may be positioned through the blind hole of the partition member 600 and screwed into a screw hole provided in the connecting member 400 or mounting member 500.

[0040] As another example, the partition member 600 and the housing 100 may be a single piece formed by an integral molding process to facilitate assembly and improve connection strength.

[0041] Figure 7 is a cross-sectional view of the partition member 600 shown in Figure 4. Referring to Figures 4 and 7, in order to connect the liquid inlet end 310 of the pump mechanism 300 provided in the power cavity body 110 to the liquid storage cavity body 120, the partition member 600 may have a communication hole 680 that connects the power cavity body 110 and the liquid storage cavity body 120, and the third flow path 420 of the connecting member 400 may communicate with the liquid storage cavity body 120 through the communication hole 680. To shorten the distance between the liquid inlet end 310 of the pump mechanism 300 and the liquid storage cavity body 120, the communication hole 680 may optionally be located on one side (for example, the left side in Figure 4) along the second axis Y direction of the pump mechanism 300.

[0042] To avoid liquid seepage, the connecting member 400 and the communication hole 680 may optionally be sealed by a second sealing member 820. Specifically, the outer wall of the connecting member 400 may have a second sealing groove, and a second sealing cavity may be formed between the second sealing groove and the inner wall of the communication hole 680. The second sealing member 820 may be a second sealing ring, which may be sealed within the second sealing cavity.

[0043] The partition member 600 may have a receiving opening 620 and a receiving cavity 610 for housing the energy source 710. The receiving opening 620 may be located on one side of the receiving cavity 610 facing the pump mechanism 300 along the first axis X direction (for example, the upper side in Figures 4 and 7). Here, the partition member 600 may independently form the receiving opening 620 and the receiving cavity 610, as shown in Figures 3 to 5 and 7. Alternatively, the partition member 600 may form the receiving opening 620 and the receiving cavity 610 together with the inner housing wall of the housing 100, as shown in Figure 6.

[0044] In one possible structure of the partition member 600, referring to Figures 3 to 5 and 7, if the liquid storage cavity body 120 encloses the energy source 710 on one side along the first axis X, the partition member 600 may include a first portion 630 and a second portion 640 that communicate sequentially along the first axis X, and the first portion 630 may be closer to the pump mechanism 300 than the second portion 640. The inner wall of the first portion 630 may form part of the housing opening 620 and the housing cavity 610, and the inner wall of the second portion 640 may form another portion of the housing cavity 610. The shape of the outer wall of the first portion 630 may conform to the shape of the inner housing wall of the housing 100, and the outer wall of the first portion 630 may abut against the inner housing wall of the housing 100, and a communication hole 680 may be formed in the first portion 630. At least a portion of the liquid storage cavity 120 may be limited and formed between the outer wall of the second portion 640 and the inner housing wall of the housing 100.

[0045] For example, the liquid storage cavity 120 may be provided with a fourth flow path 651 that connects the bottom of the liquid storage cavity 120 to the communication hole 680. The fourth flow path 651 may be formed by an independent tube. Alternatively, the fourth flow path 651 may be formed by a partition member 600 to facilitate assembly and improve the connection strength between the fourth flow path 651 and the communication hole 680. Specifically, referring to Figure 4, the partition member 600 may further include a third portion 650, which is integrally connected to the first portion 630. The third portion 650 may have a fourth flow path 651 through which liquid flows. The fourth flow path 651 can connect the communication hole 680 to the side of the liquid storage cavity 120 away from the pump mechanism 300. Furthermore, the fourth channel 651 may extend along the first axis X direction, thereby shortening the length of the waterway between the liquid inlet end 310 of the pump mechanism 300 and the side of the liquid storage cavity 120 away from the pump mechanism 300.

[0046] In another possible structure of the partition member 600, referring to Figure 6, if a space for arranging the energy source 710 is formed between the liquid storage cavity body 120 and the inner housing wall of the housing 100, the partition member 600 may include a fourth portion 660, which may extend along the first axis X direction. At least a portion of the liquid storage cavity body 120 may be formed between the fourth portion 660 and a portion of the inner housing wall of the housing 100, and at least a portion of the containment cavity 610 may be formed between the fourth portion 660 and another portion of the inner housing wall of the housing 100.

[0047] Furthermore, the partition member 600 may further include a fifth portion 670. The fifth portion 670 may be connected between the fourth portion 660 and the inner housing wall of the housing 100, and the fifth portion 670 may provide support to the energy source 710 in the first axial X direction.

[0048] Referring to Figure 1, the water tank of the relevant oral irrigator is often provided with a vent. This vent allows airflow to enter the water tank when the pump mechanism 300 draws water, filling the space where the liquid has been lost and ensuring that the internal cavity of the water tank communicates with the outside. The relevant vent is exposed to the outside, affecting the aesthetics of the oral irrigator 1000. Also, when gripping the device body, the vent may be blocked, potentially affecting the operation of the water pump. Furthermore, if the vent is designed inside the device body, it is necessary to add a ventilation pipe to the internal cavity space, increasing the difficulty of the design.

[0049] To address the technical problems described above, the inventors of this application devised a method for disassembling the main body of the device into two parts that can be nested together, and for using the assembly gap between the two parts to connect the internal cavity of the water tank to the outside. In this way, the exterior of the device can be made without holes. However, it is difficult to control the assembly gap with relative precision, and among products on the same production line, some have a relatively large assembly gap, posing a high risk of liquid leakage, while others have a relatively narrow assembly gap, making it difficult for outside air to pass through. Based on this, the inventors of this application devised a method for forming a micro-passage between the mating surfaces of these two parts. By setting the cross-section of the micro-passage to be relatively small, it is possible to allow gas flow while preventing liquid leakage. The assembly gap can be made slightly larger to allow outside air to pass through easily and to prevent large differences in the assembly gaps among products on the same production line.

[0050] Specifically, referring to Figure 3, the housing 100 may include a housing body 130 and a lid 140. The housing body 130 may include a top wall and side walls. The side walls of the housing body 130 may be connected to the outer circumference of the top wall of the housing body 130, or may extend along the first axis X direction. The top wall of the housing body 130 may have a through hole for the output shaft 210 of the motor 200 to pass through. The housing body 130 may have an opening. The opening may be located at one end of the housing body 130 along the first axis X direction, as shown in Figure 3, or opposite the top wall of the housing body 130. Alternatively, the opening may be located in the side wall of the housing body 130.

[0051] The lid 140 can seal and cover the opening of the housing 130, thereby allowing the housing 130 and the lid 140 to surround the internal cavity of the housing. The lid 140 and the housing 130 can be nested together along a predetermined direction. This predetermined direction may be the direction of the first axis X, or it may intersect the direction of the first axis X.

[0052] Specifically, the lid 140 may include a bottom wall and side walls. The side walls of the lid 140 may be connected to the outer circumference of the bottom wall of the lid 140 and may extend along a certain direction. The side walls and bottom wall of the lid 140 can form an internal cavity of the lid 140 that opens at one end. The side walls of the lid 140 may be fitted inside the internal cavity of the housing 130, as shown in Figure 3. Alternatively, the side walls of the lid 140 may be fitted outside the housing 130. Furthermore, the lid 140 and the housing 130 may form at least a portion of the liquid storage cavity 120.

[0053] Referring to Figures 8 and 9, the lid 140 may have a first mating surface 145, and the housing body 130 may have a second mating surface 131 positioned opposite the first mating surface 145. An assembly gap 190 may be formed between the first mating surface 145 and the second mating surface 131. For example, in Figure 3, the lid 140 may be fitted inside the internal cavity of the housing body 130, and the outer surface of the lid 140 fitted inside the housing body 130 may be the first mating surface 145, and the outer surface of the housing body 130 fitted outside the lid 140 may be the second mating surface 131. Furthermore, for example, the lid 140 may be fitted outside the housing body 130, and the inner surface of the lid 140 may be the first mating surface 145, and the outer surface of the housing body 130 may be the second mating surface 131. In this way, the gas flow passage can be hidden inside the device to avoid it becoming blocked, which has the advantages of easy ventilation and the elimination of visible holes.

[0054] Furthermore, a micropassage 180 may be formed between the housing 130 and the lid 140. The micropassage 180 allows gas to pass along the first axis X direction and prevents liquid from flowing out, and the micropassage 180 communicates the liquid storage cavity 120 with the outside using the assembly gap 190 between the housing 130 and the lid 140. Optionally, in a preset direction, the liquid storage cavity 120 may be higher than the micropassage 180. This may result in the water level in the liquid storage cavity 120 being higher than the micropassage 180.

[0055] Specifically, the liquid level in the liquid storage cavity 120 may be higher than that of the micro-passage 180, thereby creating a pressure difference between the external pressure (1 atmosphere) and the pressure in the liquid storage cavity 120 (less than 1 atmosphere). Under the action of this pressure difference, gas flow can be enabled and liquid leakage can be prevented, thereby achieving the objectives of gas passage and leakage prevention. It should be noted that the phrase "preventing liquid leakage" can be understood in a broad sense, meaning that when the oral irrigator 1000 is stationary or being held normally by the user, the micro-passage 180 can prevent liquid leakage. If the user shakes it with great force, the surface tension is broken, affecting the air pressure, and liquid may splash and leak from the micro-passage 180.

[0056] The method for forming the micro-passage 180 will be described below with reference to Figures 8 and 9. Specifically, a third sealing groove 141 may be provided on one side wall of the housing body 130 and the lid body 140, and the third sealing groove 141 may have an opening facing outwards. The other side wall of the housing body 130 and the lid body 140 may be formed together with the third sealing groove 141 to surround a third sealing cavity 142, and the third sealing cavity 142 may communicate with the liquid storage cavity body 120 and the outside through an assembly gap 190. An airflow groove 143 may be provided at the bottom of the third sealing groove 141, and the airflow groove 143 may have an opening facing the third sealing cavity 142.

[0057] For example, in Figures 8 and 9, the lid 140 is fitted inside the internal cavity of the housing 130, and a third sealing groove 141 may be provided in the side wall of the lid 140, and the third sealing groove 141 may have an opening facing outwards. The side wall of the housing 130 and the third sealing groove 141 may together form surrounding the third sealing cavity 142. Alternatively, for example, the lid 140 may be fitted on the outside of the housing 130, and a third sealing groove 141 may be provided in the side wall of the housing 130, and the third sealing groove 141 may have an opening facing outwards. The side wall of the lid 140 and the third sealing groove 141 may together form surrounding the third sealing cavity 142.

[0058] Figure 10 is a cross-sectional view of a non-airflow groove 143 of a housing 100 provided by an embodiment of the present application. Referring to Figure 10, the housing 100 may further include a third sealing member 830, which may be sandwiched between the inner wall of the other of the housing body 130 and the lid body 140 and the groove bottom of the third sealing groove 141. Here, the cross-sectional shape of the third sealing member 830 may be circular or polygonal. The embodiments of the present application do not specifically limit the cross-sectional shape of the third sealing member 830.

[0059] Continuing to refer to Figures 8 and 9, a micropassage 180 is formed between the surface of the third sealing member 830 adjacent to the airflow groove 143 and the airflow groove 143. In this way, the sealing cavity is sealed by the third sealing member 830 in the non-airflow groove 143. The airflow groove 143 has a micropassage 180 formed therein that prevents the flow of liquid, allowing gas to flow. Since the machining depth of the airflow groove 143 is generally relatively precise, the size of the formed micropassage 180 can be precisely controlled. Thus, the housing 100 provided by the embodiment of this application not only achieves ventilation and liquid prevention but also has a high yield. Furthermore, when the pump mechanism 300 sucks liquid, the third sealing member 830 is crushed and deformed, which increases the assembly gap 190 and further promotes air intake.

[0060] The liquid level difference h formed by the highest liquid level in the liquid storage cavity 120 and the height of the horizontal plane where the airflow groove 143 is located satisfies the following condition: 0 < ρ * g * h ≤ 30% * Po. Here, ρ represents the density of air, g represents the density of liquid, and Po represents 1 atmosphere.

[0061] Specifically, the larger the difference between the liquid pressure inside the liquid storage cavity 120 and the external atmospheric pressure, the easier it is for gas to flow into the liquid storage cavity 120 from the outside, thus better preventing liquid leakage. Conversely, the smaller the difference between the liquid pressure inside the liquid storage cavity 120 and the external atmospheric pressure, the more difficult it is for gas to flow into the liquid storage cavity 120 from the outside, potentially leading to liquid leakage. According to the inventor's verification in this application, when the liquid level difference h satisfies the above conditions, the micro-passage 180 can allow gas to pass through and prevent liquid leakage.

[0062] To further prevent leakage, the liquid level difference h may satisfy 0 < ρ*g*h ≤ 20%*Po. To further prevent leakage, the liquid level difference h may satisfy 0 < ρ*g*h ≤ 10%*Po. For example, ρ*g*h ≤ 10%*Po, ρ*g*h ≤ 5%*Po, and ρ*g*h ≤ 1%*Po. Furthermore, the depth range of the airflow groove 143 can be set to 0.1 mm to 0.4 mm in order to allow gas to pass through while simultaneously preventing liquid from passing through. For example, the depth of the airflow groove 143 can be 0.1 mm, 0.3 mm, 0.4 mm, etc. Furthermore, the depth range of the airflow groove 143 can be set to 0.25 mm to 0.34 mm in order to further facilitate gas passage and liquid blocking. For example, the depth of the airflow groove 143 can be 0.25 mm, 0.30 mm, 0.34 mm, etc.

[0063] In a predetermined direction, the third sealing groove 141 may have two groove side walls arranged opposite each other, as shown in Figures 8 and 9. The groove bottom wall of the third sealing groove 141 may be connected between the two groove side walls. Alternatively, the third sealing groove 141 may have a first groove side wall, which may be used to support one side of the third sealing member 830.

[0064] If the third sealing member 830 has two groove side walls, in order to allow the inflow and outflow of gas into the third sealing cavity 142, for example, referring to Figure 8, the height of the third sealing member 830 may be lower than the height of the groove bottom wall in a predetermined direction. Thus, a passage communicating with the micropassage 180 may be formed between the third sealing member 830 and one of the groove side walls, and a passage communicating with the micropassage 180 may also be formed between the third sealing member 830 and the other of the groove side walls. In this way, gas entering the third sealing cavity 142 can flow out of the third sealing cavity 142 after circling the third sealing member 830 at least halfway, as indicated by the arrows in Figure 8. Furthermore, the airflow groove 143 may penetrate the groove bottom wall along a predetermined direction, as shown in Figure 11.

[0065] As another example, referring to Figure 9, both inner walls may be provided with flow guide grooves 144. The flow guide grooves 144 may have openings toward the third sealed cavity 142, and a passage for gas to flow may be formed between the flow guide grooves 144 and the third sealed member 830, the passage communicating with a micropassage 180. Gas entering the third sealed cavity 142 passes through the passage and the micropassage 180, and as shown by the arrows in Figure 9, flows out of the third sealed cavity 142 after circling the third sealed member 830 at least halfway. Furthermore, the flow guide grooves 144 may penetrate the side walls of the grooves in a direction perpendicular to the groove bottom wall.

[0066] Similarly, if the third sealing member 830 has a single groove side wall, the inflow and outflow of gas into the third sealing cavity 142 can be achieved by lowering the height of the third sealing member 830 or by providing a flow guide groove 144 in the groove side wall.

[0067] Optionally, referring to Figure 11, the circumferential length of the airflow groove 143 is shorter than the circumferential length of the sealing groove. There may be one or more airflow grooves 143. If there are multiple airflow grooves 143, they may be spaced apart.

[0068] Optionally, the lid 140 is detachably connected to the housing 130, thereby achieving the objective of quickly draining the liquid from the liquid storage cavity 120 by removing the lid 140 from the housing 130.

[0069] Figure 12 is an exploded view of an oral irrigator provided by an embodiment of the present application. Referring to Figure 12, the oral irrigator provided by an embodiment of the present application may further include a mounting member 500. To facilitate assembly, the mounting member 500 may be fixed to the inner housing wall of the housing 100, and both the motor 200 and the pump mechanism 300 may be attached to the mounting member 500. In this way, during assembly, the motor 200 and the pump mechanism 300 can first be assembled to the mounting member 500, and then the two can be assembled together as a single assembly inside the housing 100.

[0070] Furthermore, since both the motor 200 and the pump mechanism 300 generate vibrations during operation, the connection reliability of the pipeline connecting the liquid discharge end 320 of the pump mechanism 300 and the first flow path 211 of the output shaft 210 is low and it is very prone to detachment. To address the above problem, the inventors of this application considered disassembling the pump mechanism 300 into a power end 330, a liquid inlet end 310, and a liquid discharge end 320, and integrating the liquid discharge end 320 with a connecting member 400 and a mounting member 500 to reduce resonance and improve the connection reliability of the communication point between the second flow path 410 of the connecting member 400 and the liquid discharge end 320 of the pump mechanism 300.

[0071] Specifically, referring to Figures 13 to 16, the second valve portion 321 of the liquid discharge end 320 may be integrated with the mounting member 500, and the second end cover portion 322 of the liquid discharge end 320 may be integrated with the connecting member 400. The power end 330, at least a part of the connecting member 400, and at least a part of the mounting member 500 may be arranged in order along the liquid discharge direction (second axis Y direction) of the liquid discharge end 320, and may be connected by a third fastening member 923. In this way, the mounting member 500 isolates the connecting member 400 from the power end 330 of the pump mechanism 300, so that most of the vibrations of the pump body are transmitted to the mounting member 500. A vibration reducing member may be provided between the mounting member 500 and the inner housing wall of the housing 100. The mounting member 500 can eliminate vibrations through vibration reducing connections, thereby reducing or completely eliminating vibrations transmitted from the power end 330 of the pump mechanism 300 to the connecting member 400. In this way, the influence of vibrations from the power end 330 of the pump mechanism 300 on the connecting member 400 is reduced, and the reliability of the connection at the point where the second flow path 410 of the connecting member 400 and the liquid discharge end 320 of the pump mechanism 300 communicate is improved. Furthermore, integrating the liquid discharge end 320 with the mounting member 500 and the connecting member 400 not only simplifies assembly but also shortens the waterway and improves connection reliability.

[0072] Optionally, the power end 330 may include a pump casing 331 and a piston 332, and one end of the pump casing 331 may have an opening. The mounting member 500 can seal and cover the opening, and together the mounting member 500 and the pump casing 331 can form a pump chamber of the pump mechanism 300 for the piston 332 to reciprocate along the liquid discharge direction of the liquid discharge end 320. The mounting member 500 may have a liquid discharge hole that penetrates the mounting member 500 and communicates with the pump chamber of the pump mechanism 300. The second valve portion 321 of the liquid discharge end 320 is located in the liquid discharge hole, and the second valve portion 321 of the liquid discharge end 320 can pump the liquid out of the pump chamber through the liquid discharge hole and prevent the liquid from flowing into the pump chamber through the liquid discharge hole.

[0073] Specifically, the piston 332 reciprocates within the pump chamber, pumping the liquid inside and discharging it through the liquid discharge hole. The valve at the liquid discharge end 320 has a one-way conductive function to prevent the liquid from flowing back into the pump chamber through the liquid discharge hole. In this solution, the objective of integrating the valve portion of the liquid discharge end 320 is achieved by using the mounting member 500 to form the pump chamber and the liquid discharge hole.

[0074] Optionally, referring to Figure 16, the power end 330 may further include a drive member 333, the drive member 333 having a drive shaft that rotates relative to the pump casing 331. The drive shaft can drive an eccentric wheel to rotate relative to the pump casing 331. The eccentric wheel can push the piston 332 to reciprocate.

[0075] Referring to Figures 15 to 17, optionally, at least a portion of the connecting member 400 and the second end cover portion 322 of the liquid discharge end 320 may be a single integrated member formed by an integral molding process. The second end cover portion 322 of the liquid discharge end 320 can cover the liquid discharge hole, and a liquid discharge channel connecting the liquid discharge hole and the second flow channel 410 may be formed in the second end cover portion 322 of the liquid discharge end 320.

[0076] Specifically, the liquid discharge passage of the second end cover portion 322 of the liquid discharge end 320 can guide the flow direction of the liquid flowing out from the liquid discharge hole. In this solution, the connecting member 400 and the second end cover portion 322 of the liquid discharge end 320 are made into a single integrated member, thereby integrating the liquid discharge passage and the second flow path 410. This improves the reliability of the connection at the communication point, improves the smoothness of the liquid flow, and improves the convenience of assembly.

[0077] Optionally, the mounting member 500 may have a liquid inlet that penetrates the mounting member 500 and communicates with the pump chamber of the pump mechanism 300. The first valve portion 311 of the liquid inlet end 310 may be located in the liquid inlet, and the first valve portion 311 of the liquid inlet end 310 can pump the liquid into the pump chamber through the liquid inlet and prevent the liquid from flowing out through the liquid inlet.

[0078] Specifically, the piston 332 reciprocates within the pump chamber, pumping the liquid and sending it into the pump chamber through the liquid inlet. The valve at the liquid inlet end 310 has a one-way conductivity function to prevent the liquid from flowing out through the liquid inlet. In this solution, the objective of integrating the first valve portion 311 of the liquid inlet end 310 is achieved by using the mounting member 500 to form the pump chamber and the liquid inlet.

[0079] Optionally, at least a portion of the connecting member 400 and the first end cover portion 312 of the liquid inlet end 310 may be a single integrated member formed by an integral molding process. The first end cover portion 312 of the liquid inlet end 310 can cover the liquid inlet hole. Furthermore, a liquid inlet channel communicating with the liquid inlet hole may be formed in the first end cover portion 312 of the liquid inlet end 310, and this liquid inlet channel may communicate with the third channel 420 of the connecting member 400. In this way, the liquid inlet passage of the first end cover portion 312 of the liquid inlet end 310 can guide the flow direction of the liquid flowing into the liquid inlet hole. In this solution, by making the connecting member 400 and the first end cover portion 312 of the liquid inlet end 310 a single integrated member, the liquid inlet passage and the third channel 420 are integrated, thereby improving connection reliability at the communication point, improving the smoothness of liquid flow, and improving ease of assembly.

[0080] Referring to Figures 13 to 16, optionally, the mounting member 500 may include a first mounting portion 510, which may have a first and second side facing each other along the liquid discharge direction of the liquid discharge end 320. The motor 200 and the power end 330 of the pump mechanism 300 may be spaced apart along the axial direction of the output shaft 210 and positioned on the first side of the first mounting portion 510. The portion of the connecting member 400 of the second end cover portion 322, into which the liquid discharge end 320 is integrated, may be positioned on the second side of the first mounting portion 510. The mounting member 500 may have a through hole 530 that restricts at least one side of the connecting member 400 along the axial direction of the output shaft 210 for the connecting member 400 to pass through. In this way, the through hole 530 can be used to restrict the connecting member 400 in order to provide upward support and positional restriction to the connecting member 400 and prevent the connecting member 400 from vibrating up and down. Optionally, the circuit board 720 can be attached to the side of the first mounting portion 510 away from the motor 200 via a fourth fastening member 924. A fourth vibration reduction member 914 may be provided between the circuit board 720 and the inner housing wall of the housing 100.

[0081] Referring to Figures 12 and 13, optionally, the mounting member 500 may further include a second mounting portion 520. The second mounting portion 520 may be connected to the first side of the first mounting portion 510, and together the second mounting portion 520 and the first mounting portion 510 can form a housing space for enclosing the outer surface of the motor 200. In this way, the mounting member 500 encloses the outer surface of the motor 200 and transmits most of the vibrations of the motor 200 to the mounting member 500, thereby reducing or eliminating the vibrations transmitted by the motor 200 to the connecting member 400. As a result, the influence of vibrations at the power end 330 of the motor 200 on the connecting member 400 is reduced, and the reliability of the connection at the point of communication between the second flow path 410 of the connecting member 400 and the first flow path 211 of the motor 200 is improved. Optionally, as shown in Figure 13, the first mounting portion 510 and the second mounting portion 520 may be fastened together by the second fastening member 922.

[0082] Optionally, a vibration-reducing member is sandwiched between the first mounting portion 510 and the outer surface of the motor 200, and / or between the second mounting portion 520 and the outer surface of the motor 200. In this way, the vibration-reducing members can reduce the transmission of vibrations between the motor 200 and the mounting member 500. For example, in Figure 13, the second vibration-reducing member 912 is sandwiched between the front end of the motor 200 and the mounting member 500, and the third vibration-reducing member 913 is sandwiched between the rear end of the motor 200 and the mounting member 500.

[0083] Referring to Figure 17, optionally, the connecting member 400 may have a mounting groove 450 through which the output shaft 210 of the motor 200 is inserted. A fourth sealing member 840 may be filled between the inner groove wall of the mounting groove 450 and the output shaft 210 of the motor 200. Specifically, the first flow path 211 of the output shaft 210 and the second flow path 410 of the connecting member 400 can communicate through the mounting groove 450, and by providing a sealing member, liquid seepage at the communication point can be prevented.

[0084] Continuing to refer to Figure 17, optionally, the motor 200 may include a motor body 220 and an output shaft 210. The output shaft 210 of the motor 200 may be positioned to pass through the motor body 220, and both axial ends of the output shaft 210 may pass through to the outside of the motor body 220. Together, the bottom surface of the motor body 220 and the inner groove wall of the mounting groove 450 can form a restricting space to restrict the fourth sealing member 840. This restricting space can restrict both axial ends of the output shaft 210 of the fourth sealing member 840. In this way, by restricting the fourth sealing member 840 with the bottom surface of the motor body 220 of the motor 200 and the groove bottom wall of the mounting groove 450, it is possible to prevent the fourth sealing member 840 from moving due to vibration.

[0085] Referring to Figure 17, the second flow path 410 may include a first flow path segment 411 and a second flow path segment 412 that are in sequential communication. The first flow path segment 411 communicates with the liquid discharge end 320 and may extend along the first axis X direction. There is a gap between the first flow path segment 411 and the first flow path 211 in the second axial direction. The second flow path segment 412 may communicate with the first flow path segment 411 and the first flow path 211, and the second flow path segment 412 may include a first arc segment 4121, and the first arc segment 4121 and the first flow path segment 411 may transition in an arc shape. By utilizing the arc shape transition, the resistance of the inner wall of the flow path to the liquid is reduced, and the flow of liquid is facilitated.

[0086] Furthermore, the first arc segment 4121 may be higher than the pump mechanism 300, and the first arc segment 4121 may have an arc center that points toward the pump mechanism 300. This allows the liquid to flow relatively gently toward the first flow path 211, further reducing the resistance of the flow path inner wall to the liquid.

[0087] Optionally, the second channel segment 412 further includes a second arc segment 4122, and the second arc segment 4122 and the first channel 211 transition in an arc shape. By utilizing the arc shape transition, the resistance of the inner wall of the channel to the liquid is reduced, which is advantageous for the liquid flow.

[0088] Furthermore, since the second arc segment 4122 has an arc center that faces the motor 200, the second arc segment 4122 and the first flow path 211 are smoothly connected, which is advantageous for the flow of liquid.

[0089] Referring to Figures 17 and 18, optionally, the connecting member 400 may include a first connecting portion 430 and a second connecting portion 440 connected to each other. The first connecting portion 430 may have a first flow channel segment 411 and a reversing cavity 431 communicating with the first flow channel segment 411. The reversing cavity 431 may have a first inner arcuate surface 432, and the reversing cavity 431 may have an opening in the direction of the first axis X. At least a portion of the second connecting portion 440 may be located inside the reversing cavity 431 through the opening of the reversing cavity 431, and may have a second inner arcuate surface 441. The first inner arcuate surface 432 and the second inner arcuate surface 441 may together form surrounding the second flow channel segment 412.

[0090] Specifically, the second connection portion 440 may include a cover plate segment 442, a projection segment 443, and a barrier plate segment 444. The projection segment 443 and the barrier plate segment 444 may be connected to both sides of the cover plate segment 442 along the first axis X direction, respectively. The cover plate segment 442 can seal and cover the reversal cavity 431, and the barrier plate segment 444 may be located inside the reversal cavity 431 and may have a second inner arc surface 441. The cover plate segment 442 may have a through hole, the projection segment 443 may surround the outside of the through hole, and the internal cavity of the projection segment 443 may communicate with the through hole. The output shaft 210 may be positioned to pass through the internal cavity and through hole of the projection segment 443, and a fourth sealing member 840 is provided between the output shaft 210 and the internal cavity wall of the projection segment 443. In this way, the protruding segment 443 and a portion of the cover plate segment 442 can form the mounting groove 450 mentioned above. [Explanation of symbols]

[0091] 1000 Oral irrigation device, 100 Housing, 110 Power cavity body, 120 Liquid storage cavity body, 130 Housing body, 131 Second mating surface, 140 Cover body, 141 Third sealing groove, 142 Third sealing cavity, 143 Airflow groove, 144 Flow guide groove, 145 First mating surface, 160 Upper end, 170 Lower end, 180 Micropassage, 190 Assembly gap, 200 Motor, 210 Output shaft, 211 First flow path, 220 Motor body, 300 Pump mechanism, 310 Liquid inlet end, 311 First valve section, 312 First end cover section, 320 Liquid outlet end, 321 Second valve section, 322 Second end cover section, 330 Power end, 331 Pump casing, 332 Piston, 333 Drive member, 400 410 Connecting member, 410 Second channel, 411 First channel segment, 412 Second channel segment, 4121 First arc segment, 4122 Second arc segment, 420 Third channel, 430 First connection part, 431 Direction change cavity, 432 First inner arc surface, 440 Second connection part, 441 Second inner arc surface, 442 Cover plate segment, 443 Projection segment, 444 Barrier plate segment, 450 Mounting groove, 500 Mounting member, 510 First mounting part, 520 Second mounting part, 530 Through hole, 600 Partition member, 610 Housing cavity, 620 Housing opening, 630 First part, 640 Second part, 650 Third part, 651 Fourth channel, 660 Fourth part, 670 Fifth part, 680 Communication hole, 710 Energy source, 720 Circuit board, 810 First sealing member, 820 Second sealing member, 830 Third sealing member, 840 Fourth sealing member, 912 Second vibration reduction member, 913 Third vibration reduction member, 914 Fourth vibration reduction member, 921 First fastening member, 922 Second fastening member, 923 Third fastening member, 924 Fourth fastening member, 2000 Cleaning accessory, 2100 Brush body, 2200 Cavity, 2300 Outlet

Claims

1. An oral irrigation device comprising a housing (100), a motor (200), a pump mechanism (300), and a connecting member (400) provided in the internal cavity of the housing (100), wherein the internal cavity of the housing (100) includes a liquid storage cavity body (120), and the output shaft (210) of the motor (200) has a first flow path (211) through which it is disposed. The motor (200), the pump mechanism (300), and the liquid storage cavity (120) are arranged in order along the first axis (X) direction, the liquid inlet (310) and liquid outlet (320) of the pump mechanism (300) are located at one end along the second axis (Y) direction of the pump mechanism (300), and the liquid inlet (310) and liquid outlet (320) of the pump mechanism (300) are located closer to the liquid storage cavity (120) along the first axis (X) direction of the pump mechanism (300), and the first axis (X) direction intersects the second axis (Y) direction. The oral irrigation device is characterized in that the connecting member (400) is arranged on one side of the pump mechanism (300) in the direction of the second axis (Y) and has a third flow path that connects the liquid storage cavity (120) and the liquid inlet end (310) of the pump mechanism (300), and a second flow path (410) that connects the liquid outlet end (320) of the pump mechanism (300) and the first flow path (211).

2. The second flow path (410) includes a first flow path segment (411) and a second flow path segment (412) that are in sequential communication with each other. The first flow channel segment (411) communicates with the liquid discharge end (320) and extends along the first axis (X) direction, and there is a gap between the first flow channel segment (411) and the first flow channel (211) in the second axis (Y) direction. The oral irrigation device according to claim 1, characterized in that the second flow channel segment (412) connects the first flow channel segment (411) and the first flow channel (211), the second flow channel segment (412) includes a first arc segment (4121), and the first arc segment (4121) and the first flow channel segment (411) transition in an arc shape.

3. The oral irrigation device according to claim 2, characterized in that the first arc segment (4121) is higher than the pump mechanism (300), and the first arc segment (4121) has an arc center that points toward the pump mechanism (300).

4. The oral irrigation device according to claim 2, characterized in that the second flow channel segment (412) further includes a second arc segment (4122), and the second arc segment (4122) and the first flow channel (211) transition in an arc shape.

5. The oral irrigation device according to claim 4, characterized in that the second arc segment (4122) has an arc center toward the motor (200).

6. The connecting member (400) includes a first connecting portion (430) and a second connecting portion (440) that are connected to each other. The first connection portion (430) includes the first flow channel segment (411) and a direction-changing cavity (431) communicating with the first flow channel segment (411), the direction-changing cavity having a first inner arc surface (432), and the direction-changing cavity (431) having an opening in the direction of the first axis (X). The oral irrigation device according to any one of claims 2 to 5, characterized in that at least a portion of the second connecting portion (440) is positioned within the direction-changing cavity (431) from the opening of the direction-changing cavity (431) and has a second inner arc surface (441), and the first inner arc surface (432) and the second inner arc surface (441) together form a structure surrounding the second flow channel segment (412).

7. The second connecting portion (440) includes a cover plate segment (442), a projection segment (443), and a barrier plate segment (444), wherein the projection segment (443) and the barrier plate segment (444) are connected to both sides of the cover plate segment (442) along the first axis (X) direction, the cover plate segment (442) seals and covers the direction change cavity, the barrier plate segment (444) is located within the direction change cavity and has the second inner arc surface (441), the cover plate segment (442) is provided with a through hole, the projection segment (443) surrounds the outside of the through hole, and the internal cavity of the projection segment (443) communicates with the through hole. The oral irrigation device according to claim 6, characterized in that the output shaft (210) is arranged to penetrate the internal cavity of the projection segment (443) and the through hole, and a sealing member (840) is provided between the output shaft (210) and the internal cavity wall of the projection segment (443).

8. The oral irrigation device according to any one of claims 1 to 7, characterized in that the pump mechanism (300) includes a liquid inlet end (310), a liquid outlet end (320), and a power end (330), the pump mechanism (300) can pump liquid and send it from the liquid inlet end (310) into the pump chamber of the pump mechanism (300) and discharge it from the liquid outlet end (320), and the second end cover portion (322) of the liquid outlet end (320) and the first end cover portion (312) of the liquid inlet end (310) are integrated with the connecting member (400).

9. The present invention further includes a mounting member (500), the mounting member (500) being vibration-damping connected to the housing (100), and the motor (200) and the power end (330) of the pump mechanism (300) being mounted to the mounting member (500) at intervals. The oral irrigation device according to claim 8, characterized in that the second valve portion (321) of the liquid discharge end (320) is integrated with the mounting member (500), the second end cover portion (322) of the liquid discharge end (320) is integrated with the connecting member (400), and the power end (330), at least a part of the connecting member (400), and at least a part of the mounting member (500) are arranged in order along the liquid discharge direction of the liquid discharge end (320) and connected by a fastening member.

10. An oral irrigator comprising a toothbrush (2000) and an oral irrigation device (1000) according to any one of claims 1 to 9, wherein the toothbrush (2000) has a cavity (2200) and an outlet (2300) communicating with the cavity (2200), the output shaft (210) of the motor (200) of the oral irrigation device (1000) is connected to the toothbrush (2000) and moves the toothbrush (2000), and the first flow path (211) of the output shaft (210) of the motor (200) communicates with the cavity (2200) of the toothbrush (2000).

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