Oral cavity cleaning device and oral cavity cleaner

Abstract

The utility model discloses an oral cavity cleaning device and an oral cavity cleaner. An inner cavity of a machine shell of the device comprises a liquid storage cavity; an output shaft of the motor is provided with a first runner arranged in a penetrating manner; the motor, the pump mechanism and the liquid storage cavity are sequentially arranged in the first axis direction. The liquid inlet end and the liquid outlet end of the pump mechanism are arranged at the end, in the second axis direction, of the pump mechanism, and the liquid inlet end and the liquid outlet end of the pump mechanism are arranged on the side, closer to the liquid storage cavity, of the pump mechanism in the first axis direction. The first axis direction intersects with the second axis direction; the connecting piece is arranged on one side, in the second axis direction, of the pump mechanism and provided with a third flow channel communicating with the liquid storage cavity and the liquid inlet end of the pump mechanism and a second flow channel communicating with the liquid outlet end of the pump mechanism and the first flow channel. The oral cavity cleaning device and the oral cavity cleaner have the advantages that the efficiency of the pump mechanism is improved, and the impact force on the output shaft of the motor is reduced.

Description

[0001] This application claims the priority of a Chinese patent application with the application number 202421043761.0 and the application title "Oral Cleaning Device and Oral Cleaner" filed with the Chinese Patent Office on May 13, 2024, the entire content of which is incorporated herein by reference. Technical Field

[0002] Embodiments of the present application relate to the technical field of oral cleaning appliances, and in particular, to an oral cleaning device and an oral cleaner. Background Art

[0003] With the increasing emphasis on oral care, electric toothbrushes and oral irrigators have gradually become common oral care tools in households. Among them, an electric toothbrush uses a motor to vibrate the brush head at a high frequency to instantly decompose toothpaste into fine foam and deeply clean the interdental spaces. An oral irrigator uses a water pump to pump out a high-speed water column with a certain pressure to clean teeth and interdental spaces by the impact force of the high-speed water column.

[0004] Related oral cleaners can combine the functions of a toothbrush and an oral irrigator. Specifically, a related oral cleaner may include a body, a toothbrush, a motor, a water pump, and a water tank. Among them, the toothbrush is provided at the head of the body, and the motor, the water pump, and the water tank are provided inside the body. The motor shaft of the motor has a flow channel for water to pass through, and the flow channel communicates with the water tank. The toothbrush has a cavity and a flow outlet communicating with the cavity. The motor shaft of the motor passes through the cavity, and the flow channel of the motor shaft of the motor communicates with the flow outlet so that the liquid in the water tank can be ejected from the flow outlet via the flow channel under the action of the water pump.

[0005] However, both the motor and the water pump generate vibrations during operation, resulting in poor connection reliability of the pipeline connecting the flow channel between the water pump and the output shaft and being extremely prone to detachment. Summary of the Utility Model

[0006] The purpose of the embodiments of the present application is to provide an oral cleaning device and an oral cleaner, which can solve the problem of poor connection reliability of the pipeline connecting the flow channel between the water pump and the output shaft and being extremely prone to detachment.

[0007] To achieve the above object, on the one hand, an embodiment of the present application provides an oral cleaning device, including a housing and a motor, a pump mechanism, and a connecting member disposed in the inner cavity of the housing; the inner cavity of the housing includes a liquid storage cavity; the output shaft of the motor has a first flow channel penetrating therethrough; the motor, the pump mechanism, and the liquid storage cavity are sequentially arranged along a first axis direction; the liquid inlet end and the liquid outlet end of the pump mechanism are disposed at one end of the pump mechanism along a second axis direction, and the liquid inlet end and the liquid outlet end of the pump mechanism are disposed on a side closer to the liquid storage cavity along the first axis direction; the first axis direction intersects with the second axis direction; the connecting member is disposed on a side of the pump mechanism in the second axis direction and has a third flow channel connecting the liquid storage cavity and the liquid inlet end of the pump mechanism and a second flow channel connecting the liquid outlet end of the pump mechanism and the first flow channel.

[0008] Optionally, the second flow channel includes a first flow segment and a second flow segment connected in sequence; the first flow segment is connected to the liquid outlet end and extends along the first axis direction, and there is a distance between the first flow segment and the first flow channel in the second axis direction; the second flow segment connects the first flow segment and the first flow channel, and the second flow segment includes a first arc segment, and the first arc segment is in arc transition with the first flow segment.

[0009] Optionally, the first arc segment is higher than the pump mechanism, and the first arc segment has a center of the arc facing the pump mechanism.

[0010] Optionally, the second flow segment further includes a second arc segment, and the second arc segment is in arc transition with the first flow channel.

[0011] Optionally, the second arc segment has a center of the arc facing the motor.

[0012] Optionally, the connecting member includes a first connecting portion and a second connecting portion connected to each other; the first connecting portion has the first flow segment and a commutation cavity communicated with the first flow segment, the commutation cavity has a first inner arc surface, and the commutation cavity has an opening in the first axis direction; at least part of the second connecting portion is placed in the commutation cavity from the opening of the commutation cavity and has a second inner arc surface, and the first inner arc surface and the second inner arc surface enclose the second flow segment.

[0013] Optionally, the second connecting portion includes a cover plate section, a protruding section, and a baffle section. The protruding section and the baffle section are respectively connected to two sides of the cover plate section along the first axis direction. The cover plate section seals the commutation cavity. The baffle section is located in the commutation cavity and has the second inner arc surface. The cover plate section is provided with a through hole. The protruding section surrounds the outside of the through hole, and the inner cavity of the protruding section communicates with the through hole. The output shaft passes through the inner cavity of the protruding section and the through hole, and a seal is provided between the output shaft and the inner cavity wall of the protruding section.

[0014] Optionally, the pump mechanism includes a liquid inlet end, a liquid outlet end, and a power end. The pump mechanism can pump liquid from the liquid inlet end into the pump cavity of the pump mechanism and pump it out from the liquid outlet end. Among them, the second end cover part of the liquid outlet end and the first end cover part of the liquid inlet end are integrated into the connecting piece.

[0015] Optionally, it further includes a mounting piece. The mounting piece is vibration-damping connected to the machine shell. The motor and the power end of the pump mechanism are spaced apart and mounted on the mounting piece. The second valve part of the liquid outlet end is integrated into the mounting piece, and the second end cover part of the liquid outlet end is integrated into the connecting piece. The power end, at least part of the connecting piece, and at least part of the mounting piece are arranged in sequence along the liquid outlet direction of the liquid outlet end and are connected by fasteners.

[0016] Optionally, it includes a toothbrush and the oral cleaning device as described above. The toothbrush has a cavity and a flow outlet communicating with the cavity. The output shaft of the motor of the oral cleaning device is connected to the toothbrush and drives the toothbrush to move, and the first flow channel of the output shaft of the motor communicates with the cavity of the toothbrush.

[0017] The oral cleaning device and oral cleaner provided by the embodiments of the present application have a motor, a pump mechanism, and a liquid storage cavity arranged in sequence along the first axis direction, so as to shorten the longitudinal length of the liquid storage cavity, which is beneficial for the user to clean the water tank; and the transverse width of the housing can also be reduced, which is convenient for the user to hold. In addition, the liquid inlet end and the liquid outlet end of the pump mechanism are arranged on the side of the pump mechanism closer to the liquid storage cavity along the first axis direction, so as to shorten the distance between the liquid inlet end of the pump mechanism and the bottom of the liquid storage cavity, which is convenient for the pump mechanism to suck the liquid in the liquid storage cavity and improve the efficiency of the pump mechanism; and the distance between the liquid outlet end of the pump mechanism and the first flow channel is increased to reduce the impact force of the liquid at the liquid outlet end of the pump mechanism on the output shaft of the motor, which is beneficial for the connection stability. In addition, both the second flow channel and the third flow channel are integrated on the connecting piece, which not only reduces the number of parts required for assembly and improves the assembly efficiency, but also improves the overall structural strength of the second flow channel and the third flow channel to resist the impact force of the water flow, thereby improving 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, so as to reduce the risk of liquid leakage at the connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 Schematic diagram of a related oral cleaner;

[0020] Figure 2 Schematic diagram of an oral cleaner provided by an embodiment of the present application;

[0021] Figure 3 For Figure 2 A longitudinal sectional view of the shown oral cleaner;

[0022] Figure 4 For Figure 2 Partial view of another longitudinal section of the shown oral cleaner;

[0023] Figure 5 An internal layout diagram of the oral cleaning device provided by an embodiment of the present application;

[0024] Figure 6 Another internal layout diagram of the oral cleaning device provided by an embodiment of the present application;

[0025] Figure 7 For Figure 4 A sectional view of the shown partition;

[0026] Figure 8 Partial cross-sectional view of a housing provided by an embodiment of the present application at an air flow groove;

[0027] Figure 9 Another partial cross-sectional view of a housing provided by an embodiment of the present application at an air flow groove;

[0028] Figure 10 Partial cross-sectional view of a housing provided by an embodiment of the present application at a non-air flow groove;

[0029] Figure 11 Schematic diagram of a cover body and a third sealing ring provided by an embodiment of the present application;

[0030] Figure 12 Exploded view of an oral cleaner provided by an embodiment of the present application;

[0031] Figure 13 is Figure 12 Exploded view of the shown motor, connecting member, mounting member, and circuit board;

[0032] Figure 14 is Figure 13 Assembled three-dimensional view of the shown mounting member, connecting member, and pump mechanism;

[0033] Figure 15 Exploded view of the connecting member, mounting member, and motor of the oral cleaner provided by an embodiment of the present application;

[0034] Figure 16 is Figure 15 Exploded view of the shown pump mechanism, mounting member, and connecting member;

[0035] Figure 17 is Figure 3 Partial schematic diagram of;

[0036] Figure 18 Exploded view of a connecting member provided by an embodiment of the present application.

[0037] Explanation of reference numerals:

[0038] 1000, oral cleaning device;

[0039] 100, housing; 110, power cavity; 120, liquid storage cavity; 130, housing body; 131, second mating surface; 140, cover body; 141, third sealing groove; 142, third sealing cavity; 143, air flow groove; 144, diversion groove; 145, first mating surface; 160, top end; 170, bottom end; 180, microchannel; 190, assembly gap;

[0040] 200, Electric motor; 210, Output shaft; 211, First flow channel; 220, Electric motor body;

[0041] 300, Pump mechanism; 310, Liquid inlet end; 311, First valve part; 312, First end cover part; 320, Liquid outlet end; 321, Second valve part; 322, Second end cover part; 330, Power end; 331, Pump housing; 332, Piston; 333, Driving part;

[0042] 400, Connecting part; 410, Second flow channel; 411, First flow section; 412, Second flow section; 4121, First arc section; 4122, Second arc section; 420, Third flow channel; 430, First connecting part; 431, Commutation cavity; 432, First inner arc surface; 440, Second connecting part; 441, Second inner arc surface; 442, Cover plate section; 443, Protrusion section; 444, Baffle section; 450, Installation groove;

[0043] 500, Mounting part; 510, First mounting part; 520, Second mounting part; 530, Through hole;

[0044] 600, Partition part; 610, Accommodation cavity; 620, Accommodation opening; 630, First part; 640, Second part; 650, Third part; 651, Fourth flow channel; 660, Fourth part; 670, Fifth part; 680, Communication hole;

[0045] 710, Energy source; 720, Circuit board;

[0046] 810, First seal; 820, Second seal; 830, Third seal; 840, Fourth seal;

[0047] 912, Second shock absorber; 913, Third shock absorber; 914, Fourth shock absorber;

[0048] 921, First fastener; 922, Second fastener; 923, Third fastener; 924, Fourth fastener;

[0049] 2000, Cleaning accessory; 2100, Brush body; 2200, Cavity; 2300, Outlet. Detailed implementation mode

[0050] Figure 1 It is a schematic diagram of a related oral cleaner. Refer to Figure 1, the body of the related oral cleaner is slender. Among them, the water tank is arranged on the right side of the body, and the motor, water pump and battery are arranged on the left side of the body. The longitudinal length of the water tank is almost equal to the longitudinal length of the body, and the diameter of the water tank is small, which makes it difficult for users to clean the inner wall of the water tank. In addition, the water pump is arranged in the middle left position of the body, and the input end a and the output end b of the water pump are arranged on the upper part of the water pump, resulting in too long longitudinal distance between the input end a of the water pump and the bottom of the water tank, and further resulting in a long water path between the two, which is not conducive to the water pump sucking the liquid in the water tank.

[0051] In view of the above technical problems, the inventor of the present application thought of arranging the water tank at the lower part of the body, and arranging the motor, water pump, etc. above the water tank to shorten the longitudinal length of the water tank for easy cleaning of the water tank; the transverse width of the body can also be reduced for easy holding by the user. However, such an arrangement will reduce the volume of the water tank. In order to increase the volume of the water tank as much as possible, the inventor of the present application tried to shorten the longitudinal length of the water pump. Specifically, the input end and the output end of the water pump can be converted from being arranged above the water pump to being arranged on the lower side of the water pump, which not only increases the longitudinal depth of the sunken water tank, but also shortens the distance between the input end of the water pump and the bottom of the water tank, improving the pumping effect of the water pump. In addition, the space on the side of the water pump can be used to set up a commutation water path so that the output end of the water pump arranged on the lower side is communicated with the flow path of the output shaft of the motor arranged above. In this way, while ensuring the appearance of the slender body, the positions of the water tank, water pump and motor are reasonably arranged, which not only increases the volume of the sunken water tank, but also improves the pumping effect of the water pump.

[0052] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments.

[0053] All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the scope of protection of the present application. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0054] Figure 2 It is a schematic diagram of an oral cleaner provided by an embodiment of the present application. Figure 3 For Figure 2 shown is a longitudinal sectional view of the oral cleaner. Refer to Figure 2 And Figure 3 , the oral cleaner provided by the embodiment of the present application may include an oral cleaning device 1000 and a cleaning accessory 2000. Among them, the cleaning accessory 2000 can be a toothbrush head, a rinsing head, a flushing and brushing integrated head, etc., which can clean the oral cavity.Figure 3 Taking the cleaning accessory 2000 as an example of a flushing integrated head, the cleaning accessory 2000 may include a brush body 2100, and the brush body 2100 may have a cavity 2200 and a fluid outlet 2300 communicating with the cavity 2200.

[0055] Continue to refer to Figure 3 , the oral cleaning device 1000 may include a housing 100 and a power device. The power device may include a power assembly and a connecting member 400. Among them, for the convenience of the user to hold, the housing 100 may be shaped like an elongated cylinder. The shape of the cross-section of the housing 100 may be circular or non-circular (such as D-shaped, oval, polygonal, etc.). The first axis X is the center line of the housing 100, that is to say, the center points of each cross-section of the housing 100 can be on the first axis X. The housing 100 may extend along the first axis X direction (such as Figure 3 the up and down direction in

[0056] ), and the housing 100 may have a relatively arranged top end 160 and bottom end 170 along the first axis X direction. The interior of the housing 100 may be hollow so that the housing 100 can have an inner cavity. Figure 3 ), and the power assembly may be arranged in the inner cavity of the housing 100, and the power assembly may include a motor 200 and a pump mechanism 300. Among them, in order to maintain the shape requirement of the elongated housing 100, the motor 200 and the pump mechanism 300 may be arranged in sequence along the first axis X direction. The motor 200 may be closer to the top end 160 of the housing 100 than the pump mechanism 300 (such as

[0057] the motor 200 is located above the pump mechanism 300 in Figure 4 ), so that the output shaft 210 of the motor 200 can pass through the top end 160 of the housing 100 and be connected to the cleaning accessory 2000 (such as an accessory with bristles such as a toothbrush head, a flushing integrated head, etc.) to drive the cleaning accessory 2000 to move. The motor 200 may be a rotary motor 200 capable of rotating the cleaning accessory 2000; or, the motor 200 may be a vibration motor 200 capable of causing the cleaning accessory 2000 to swing at a high frequency (such as a sonic motor 200, etc.). The motor 200 may include a motor body 220 and an output shaft 210. Among them, the axis of the output shaft 210 may coincide with or be arranged parallel and spaced from the first axis X of the housing 100. The output shaft 210 may pass through the motor body 220 along its axial direction. Among them, the top end 160 of the axial direction of the output shaft 210 may pass through the top end 160 of the motor body 220 and may be connected to the cleaning accessory 2000 to drive the cleaning accessory 2000 to move.

[0057] The output shaft 210 may have a first flow channel 211 axially penetrating the output shaft 210. The inner cavity of the housing 100 may include a liquid storage cavity 120, and the liquid storage cavity 120 may be used to store liquid. Figure 4 For Figure 2 a partial view of another longitudinal section of the oral cleaner shown. Refer toFigure 3 With Figure 4 , the connecting member 400 may have a second flow channel 410 and a third flow channel 420. It should be noted that the third flow channel 420 and the second flow channel 410 are not on the same longitudinal section. Therefore, from Figure 3 the shown cross-section, the second flow channel 410 can be seen, and from Figure 4 the third flow channel 420 can be seen.

[0058] The third flow channel 420 can connect the liquid storage cavity 120 and the liquid inlet end 310 of the pump mechanism 300, and the second flow channel 410 can connect the liquid outlet end 320 of the pump mechanism 300 and the first flow channel 211. In this way, both the second flow channel 410 and the third flow channel 420 are integrated on the connecting member 400, which not only reduces the number of parts required for assembly and improves the assembly efficiency, but also increases the overall structural strength of the second flow channel 410 and the third flow channel 420 to resist the impact force of the water flow. Furthermore, the connection stability between the liquid storage cavity 120 and the second flow channel 410, the second flow channel 410 and the pump mechanism 300, the pump mechanism 300 and the third flow channel 420, and the third flow channel 420 and the first flow channel 211 of the output shaft 210 is improved, so as to reduce the risk of liquid leakage at the connection.

[0059] When the cleaning accessory 2000 is an accessory such as a rinsing head or a flushing and scrubbing integrated head that has a cavity 2200 and a fluid outlet 2300 communicating with the cavity 2200 and can spray liquid from the fluid outlet 2300, the first flow channel 211 of the output shaft 210 can communicate with the cavity 2200 and the fluid outlet 2300 of the cleaning accessory 2000. Figure 3 With Figure 4 the arrows in indicate the flow direction of the liquid. Referring to the arrow markings in Figure 3 and Figure 4 , when the oral cleaner implements the rinsing function, the pump mechanism 300 can guide the liquid in the liquid storage cavity 120 to enter the pump chamber of the pump mechanism 300 through the third flow channel 420 and the liquid inlet end 310 of the pump mechanism 300, and then enter the first flow channel 211 through the liquid outlet end 320 of the pump mechanism 300 and the second flow channel 410, and then flow out from the fluid outlet 2300 through the cavity 2200 of the cleaning accessory 2000.

[0060] Referring to Figure 3 , the power assembly (motor 200 and pump mechanism 300) and the liquid storage cavity 120 can be arranged in sequence along the first axis X direction (as Figure 1 the power assembly is located above the liquid storage cavity 120 in), so as to shorten the longitudinal length of the liquid storage cavity 120 to facilitate the user to clean the water tank; and the lateral width of the housing 100 can also be reduced to facilitate the user to hold. Among them, the pump mechanism 300 can be closer to the liquid storage cavity 120 than the motor 200, so as to facilitate the pump mechanism 300 to suck the liquid from the liquid storage cavity 120.

[0061] To increase the longitudinal height of the liquid storage cavity 120 so as to increase the volume of the liquid storage cavity 120, referring to Figure 3 and Figure 4 , optionally, the liquid outlet end 320 of the pump mechanism 300 can output liquid along the second axis Y, and both the liquid inlet end 310 and the liquid outlet end 320 of the pump mechanism 300 can be arranged on one side of the pump mechanism 300 along the second axis Y direction, wherein the second axis Y intersects with the first axis X. In this way, the length occupied by the pump mechanism 300 in the first axis X direction can be shortened, the length of the liquid storage cavity 120 in the first axis X direction can be increased, and further the volume of the liquid storage cavity 120 can be increased. Further, the second axis Y direction is perpendicular to the first axis X direction. As Figure 3 and Figure 4 shown in, the first axis X direction is the up and down direction, the second axis Y direction is the left and right direction, and both the liquid inlet end 310 and the liquid outlet end 320 of the pump mechanism 300 are arranged on the left side of the pump mechanism 300.

[0062] To effectively utilize the side space of the pump mechanism 300, further, the connecting member 400 can be connected to one side of the pump mechanism 300 along the second axis Y direction (such as Figure 3 and Figure 4 the left side shown in), so that the third flow channel 420 and at least part of the second flow channel 410 are located on one side of the pump mechanism 300 along the second axis Y direction (such as Figure 3 and Figure 4 the left side shown in). The connection part of the connecting member 400 and the liquid storage cavity 120 can be located on one side of the pump mechanism 300 along the second axis Y direction (such as Figure 4 the left side shown in), so as to shorten the distance between the liquid inlet end 310 of the pump mechanism 300 and the liquid storage cavity 120, and facilitate the pump mechanism 300 to suck the liquid in the liquid storage cavity 120.

[0063] Further, in the first axis X direction, the liquid inlet end 310 and the liquid outlet end 320 of the pump mechanism 300 can be closer to the liquid storage cavity 120. That is to say, the liquid inlet end 310 and the liquid outlet end 320 of the pump mechanism 300 are arranged at one end of the pump mechanism 300 along the first axis X direction closer to the liquid storage cavity 120. 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 can be shortened, so as to facilitate the pump mechanism 300 to suck the liquid in the liquid storage cavity 120; and the distance between the liquid outlet end 320 of the pump mechanism 300 and the first flow channel 211 can be increased, so as to reduce the impact force of the liquid at the liquid outlet end 320 of the pump mechanism 300 on the output shaft 210 of the motor 200, and be beneficial to the connection stability.

[0064] The oral cleaning device 1000 provided in the embodiment of the present application may further include an energy source 710, which may be a rechargeable battery, a storage battery, or the like, which can provide electrical energy to the motor 200, the pump mechanism 300, and the electrical components on the circuit board 720. In order to keep the oral cleaning device 1000 slender, the energy source 710 may be located on one side of the pump mechanism 300 away from the motor 200 along the first axis X direction (e.g., Figure 3 and Figure 4 and at least part of the energy source 710 is arranged side by side with at least part of the liquid storage cavity 120. In other words, the plane projection of at least part of the energy source 710 along the first axis X at least partially overlaps with the plane projection of the liquid storage cavity 120 along the first axis X. In other words, the energy source 710 and the liquid storage cavity 120 jointly occupy the bottom end 170 of the housing 100.

[0065] Figure 5 This is an internal layout diagram of an oral cleaning device provided in an embodiment of the present application. Figures 3 - 5 For example, the liquid storage cavity 120 may be wrapped around one side of the energy source 710 in the first axial direction. Figure 5 In the embodiment of the present invention, the liquid storage cavity 120 can wrap the outer side and bottom surface of the energy source 710. That is to say, in the first axial direction, the energy source 710 has a top surface and a bottom surface that are arranged oppositely, and the housing 100 can have an inner top surface and an inner bottom surface that are arranged oppositely; 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 part 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 can be shaped like a "concave", and the energy source 710 can be located in the depression of the concave liquid storage cavity 120. For another example, the liquid storage cavity 120 can only wrap the outer side 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 part of one end of the energy source 710 extending along the first axis X direction is wrapped by the liquid storage cavity 120.

[0066] Figure 6 Another internal layout diagram of the oral cleaning device provided in the embodiment of the present application. Figure 6 In another exemplary embodiment, a space for placing the energy source 710 is formed between the liquid storage cavity 120 and the inner shell wall of the housing 100. In other words, a space for placing the energy source 710 is formed between the partition 600 and the inner shell wall of the housing 100. For example, Figure 6In [description], the liquid storage cavity 120 can wrap the bottom surface of the energy source 710 and at least part of the outer side surface of the energy source 710. That is to say, there is a spacing between the bottom surface of the energy source 710 and the inner bottom surface of the housing 100, and at least part 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 can be in the shape of an L, and the energy source 710 can be located at the notch of the L-shaped liquid storage cavity 120. For another example, the liquid storage cavity 120 can only wrap the outer side surface of the energy source 710, that is to say, the bottom surface of the energy source 710 abuts against the inner bottom surface of the housing 100.

[0067] The liquid storage cavity 120 can be formed by a housing 130 independent of the housing 100, and the liquid storage cavity 120 can be detachably connected to the housing 100 so that the user can detach the liquid storage cavity 120 from the housing 100 for cleaning. Or, the liquid storage cavity 120 can be formed by the inner housing wall of the housing 100 and the partition member 600. Specifically, referring to Figure 5 and Figure 6 , the oral cleaning device 1000 provided by the embodiment of the present application can further include a partition member 600. The partition member 600 can be disposed in the inner cavity of the housing 100 and can divide the inner cavity of the housing 100 into a power cavity 110 and a liquid storage cavity 120. Among them, the motor 200, the pump mechanism 300, and the energy source 710 can all be disposed in the power cavity 110.

[0068] Optionally, at least part of the planar projection of the power cavity 120 along the first axis X does not overlap with at least part of the planar projection of the liquid storage cavity 110 along the first axis X; or, at least part of the planar projection of the liquid storage cavity 110 along the first axis X does not overlap with at least part of the planar projection of the power cavity 120 along the first axis X.

[0069] Optionally, at least part of the planar projection of the power cavity 120 along the first axis X overlaps with at least part of the planar projection of the liquid storage cavity 110 along the first axis X.

[0070] For example Figure 5 and Figure 6 in [description], the partition member 600 and the inner housing wall of the housing 100 on one side of the partition member 600 along the first axis X (such as Figure 5 and Figure 6 the left side) can enclose the power cavity 110, and the partition member 600 and the inner housing wall of the housing 100 on the other side of the partition member 600 along the first axis X (such as Figure 5 and Figure 6 the right side) can enclose the liquid storage cavity 120.

[0071] Exemplarily, referring to Figure 4 and Figure 7, the separator 600 is detachably connected to the housing 100 so that the user can detach the separator 600 from the housing 100 for cleaning. Considering the sealing performance, a first seal 810 can be filled between the separator 600 and the housing 100. For example, a first seal groove can be provided on the outer sidewall of the separator 600, and a first seal cavity can be formed between the first seal groove and the inner wall of the housing 100. The first seal 810 can be a first sealing ring, and the first sealing ring can be sealed in the first seal cavity to prevent liquid leakage. In addition, the separator 600 and the housing 100 can be detachably connected by a snap-fit connection; and / or, the separator 600 and the connecting member 400 (or the mounting member 500 mentioned below) can be tightly connected by a fastener such as a bolt. Further, the fastener connection can be waterproofed. For example, referring to Figure 12 , the separator 600 can have a blind hole, the connecting member 400 or the mounting member 500 can be provided with a threaded hole, and the first fastener 921 can pass through the blind hole of the separator 600 and be threadedly connected to the threaded hole provided in the connecting member 400 or the mounting member 500.

[0072] Another example is that the separator 600 and the housing 100 can be an integral part formed by an integral molding process to facilitate assembly and improve the connection strength.

[0073] Figure 7 is Figure 4 a cross-sectional view of the separator 600 shown. Referring to Figure 4 and Figure 7 , in order to connect the liquid inlet end 310 of the pump mechanism 300 disposed in the power cavity 110 to the liquid storage cavity 120, the separator 600 can have a communication hole 680 that communicates the power cavity 110 with the liquid storage cavity 120, and the third flow channel 420 of the connecting member 400 can communicate with the liquid storage cavity 120 through the communication hole 680. In order to shorten the distance between the liquid inlet end 310 of the pump mechanism 300 and the liquid storage cavity 120, optionally, the communication hole 680 can be provided on one side of the pump mechanism 300 along the second axis Y direction (such as Figure 4 the left side in

[0074] In order to prevent liquid leakage, optionally, the connecting member 400 and the communication hole 680 can be sealed and connected by a second seal 820. Specifically, the outer sidewall of the connecting member 400 can have a second seal groove, and a second seal cavity can be formed between the second seal groove and the inner hole wall of the communication hole 680. The second seal 820 can be a second sealing ring, and the second sealing ring can be sealed in the second seal cavity.

[0075] The separator 600 can form a receiving opening 620 and a receiving cavity 610 for receiving the energy source 710. The receiving opening 620 can be provided on one side of the receiving cavity 610 along the first axis X direction facing the pump mechanism 300 (such as Figure 4With Figure 7 the upper side in). Among them, the separator 600 can be as Figures 3 - 5 , Figure 7 shown to be able to separately form the receiving port 620 and the receiving cavity 610. Or, the separator 600 can be as Figure 6 shown to form the receiving port 620 and the receiving cavity 610 with the inner shell wall of the casing 100.

[0076] In one possible structure of the separator 600, referring to Figures 3 - 5 , Figure 7 , when the liquid storage cavity 120 is wrapped on one side of the energy source 710 along the first axis X direction, the separator 600 can include a first part 630 and a second part 640 that are sequentially connected along the first axis X direction, and the first part 630 can be closer to the pump mechanism 300 than the second part 640. Among them, the inner side wall of the first part 630 can form a part of the receiving port 620 and the receiving cavity 610, and the inner side wall of the second part 640 can form another part of the receiving cavity 610. The shape of the outer side wall of the first part 630 can be adapted to the shape of the inner shell wall of the casing 100, and the outer side wall of the first part 630 abuts against the inner shell wall of the casing 100, and the first part 630 can be formed with a communication hole 680. At least part of the liquid storage cavity 120 can be defined between the outer side wall of the second part 640 and the inner shell wall of the casing 100.

[0077] For example, a fourth flow path 651 that connects the bottom of the liquid storage cavity 120 and the communication hole 680 can be provided in the liquid storage cavity 120. The fourth flow path 651 can be formed by an independent pipe body. Or, the fourth flow path 651 can be formed by the separator 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 separator 600 can further include a third part 650, and the third part 650 is integrally connected to the first part 630. And the third part 650 can have a fourth flow path 651 for liquid to flow, and the fourth flow path 651 can connect the communication hole 680 with the side of the liquid storage cavity 120 away from the pump mechanism 300. Further, the fourth flow path 651 can extend along the first axis X direction to facilitate reducing the water path length 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.

[0078] In another possible structure of the separator 600, referring to Figure 6When a space for placing the energy source 710 is formed between the liquid storage cavity 120 and the inner wall of the housing 100, the partition member 600 may include a fourth portion 660 that may extend in the direction of the first axis X. At least a part of the liquid storage cavity 120 may be formed between the fourth portion 660 and a part of the inner wall of the housing 100, and at least a part of the accommodation cavity 610 may be formed between the fourth portion 660 and another part of the inner wall of the housing 100.

[0079] Furthermore, the partition member 600 may further include a fifth portion 670 that may be connected between the fourth portion 660 and the inner wall of the housing 100, and the fifth portion 670 may provide support for the energy source 710 in the direction of the first axis X.

[0080] Reference Figure 1 , the water tank of the related oral cleaner often has a vent hole. When the pump mechanism 300 pumps water, the vent hole can allow air to enter the water tank and fill the space where the liquid is lost, ensuring the communication between the inner cavity of the water tank and the outside. The related vent hole is exposed, affecting the aesthetics of the oral cleaning device 1000; in addition, when holding the body, there is a risk of blocking the vent hole and affecting the operation of the water pump; in addition, if the vent hole is designed inside the body, additional ventilation pipelines need to be added in the inner cavity space, increasing the design difficulty.

[0081] In view of the above technical problems, the inventor of the present application thought of disassembling the body into two parts that can be nested with each other, and using the assembly gap between the two parts to achieve the communication between the inner cavity of the water tank and the outside. In this way, the appearance of the device can be made pore-free. However, it is difficult to control the assembly gap accurately. Some products on the same production line have a large assembly gap, resulting in a risk of liquid leakage, and some have a small assembly gap, making it difficult for external gas to pass through. Based on this, the inventor of the present application thought of forming a microchannel between the mating surfaces of the two parts. The cross-section of the microchannel can be set to be small, allowing gas to flow through and blocking the outflow of liquid. The assembly gap can be made slightly larger to facilitate the passage of external gas and to ensure that the assembly gaps of products on the same production line are not very different.

[0082] Specifically, referring to Figure 3 , the housing 100 may include a housing body 130 and a cover body 140. The housing body 130 may include a top wall and a side wall. The side wall of the housing body 130 may be connected to the outer periphery of the top wall of the housing body 130 and may extend in the direction of the first axis X. 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, which may be arranged as Figure 3 shown at one end of the housing body 130 along the first axis X and may be opposite to the top wall of the housing body 130; alternatively, the opening may be arranged on the side wall of the housing body 130.

[0083] The cover body 140 can seal the opening of the housing 130 so that the housing 130 and the cover body 140 can enclose the inner cavity of the outer shell. The cover body 140 and the housing 130 can be nested with each other along a preset direction. The preset direction can be the direction of the first axis X, or can intersect the direction of the first axis X.

[0084] Specifically, the cover body 140 can include a bottom wall and a side wall. The side wall of the cover body 140 can be connected to the outer periphery of the bottom wall of the cover body 140 and extend along a certain direction. The side wall and the bottom wall of the cover body 140 can form an inner cavity of the cover body 140 with one end open. The side wall of the cover body 140 can be embedded in the inner cavity of the housing 130 as shown in Figure 3 ; or, the side wall of the cover body 140 can be sleeved on the outside of the housing 130. In addition, the cover body 140 and the housing 130 can form at least part of the liquid storage cavity 120.

[0085] Refer to Figure 8 and Figure 9 , the cover body 140 can have a first mating surface 145, the housing 130 can have a second mating surface 131 disposed opposite to the first mating surface 145, and an assembly gap 190 can be formed between the first mating surface 145 and the second mating surface 131. For example, in Figure 3 , the cover body 140 can be embedded in the inner cavity of the housing 130. The outer side surface of the cover body 140 embedded in the housing 130 can be the first mating surface 145, and the outer side surface of the housing 130 sleeved on the outside of the cover body 140 can be the second mating surface 131; again, for example, the cover body 140 can be sleeved on the outside of the housing 130. The inner side surface of the cover body 140 can be the first mating surface 145, and the outer side surface of the housing 130 can be the second mating surface 131. In this way, the gas flow channel can be hidden inside the device to avoid blocking the gas flow channel, which has the advantages of facilitating ventilation and a pore-free appearance.

[0086] In addition, a micro-channel 180 can be formed between the housing 130 and the cover body 140. The micro-channel 180 can allow gas to pass through along the direction of the first axis X and block the outflow of liquid, and the micro-channel 180 communicates the liquid storage cavity 120 with the outside by using the assembly gap 190 between the housing 130 and the cover body 140. Optionally, in the preset direction, the liquid storage cavity 120 can be higher than the micro-channel 180. So that the water level in the liquid storage cavity 120 can be higher than the micro-channel 180.

[0087] Specifically, the liquid level in the liquid storage cavity 120 can be higher than that in the microchannel 180, which can create a pressure difference between the external air pressure (one atmosphere) and the air pressure in the liquid storage cavity 120 (less than one atmosphere). Under the action of this pressure difference, gas flow is allowed while liquid outflow is blocked, so as to achieve the purpose of ventilation and leakage prevention. It should be noted that the above-mentioned "blocking liquid outflow" can be understood in a broad sense, which means that when the oral cleaning device 1000 is in a static state or the user is holding it normally, the microchannel 180 can block liquid outflow. When the user shakes it vigorously, the surface tension may be damaged and the air pressure may be affected, resulting in liquid leaking out from the microchannel 180.

[0088] Next, refer to Figure 8 and Figure 9 to describe the formation method of the microchannel 180. Specifically, a third sealing groove 141 may be provided on the side wall of one of the housing 130 and the cover 140, and the third sealing groove 141 may have an opening facing outward. The side wall of the other of the housing 130 and the cover 140 may cooperate with the third sealing groove 141 to enclose a third sealing cavity 142, and the third sealing cavity 142 may communicate with the liquid storage cavity 120 and the outside through the assembly gap 190. An air flow groove 143 may be provided at the bottom of the third sealing groove 141, and the air flow groove 143 may have an opening facing the third sealing cavity 142.

[0089] For example, Figure 8 in Figure 9 and

[0090] Figure 10 is a cross-sectional view of the housing 100 provided by the embodiment of the present application at a position where there is no air flow groove 143. Refer to Figure 10 , the housing 100 may further include a third sealing member 830, and the third sealing member 830 may be clamped between the inner side wall of the other of the housing 130 and the cover 140 and the bottom of the third sealing groove 141. Among them, the cross-sectional shape of the third sealing member 830 may be circular, polygonal, etc., and the embodiment of the present application does not specifically limit the cross-sectional shape of the third sealing member 830.

[0091] Continue to refer to Figure 8 and Figure 9, a micro-channel 180 is formed between the surface of the third seal 830 close to the air flow groove 143 and the air flow groove 143. In this way, the sealing cavity is sealed by the third seal 830 at the non-air flow groove 143. A micro-channel 180 for gas to flow through and block liquid from flowing through is formed at the air flow groove 143. The processing depth of the air flow groove 143 is generally relatively precise, so that the size of the formed micro-channel 180 can be accurately controlled. In this way, the housing 100 provided by the embodiment of the present application can not only achieve ventilation and liquid blocking, but also has a high yield. In addition, when the pump mechanism 300 sucks liquid, the third seal 830 will be flattened and deformed, making the assembly gap 190 larger, which has a better effect of facilitating air intake.

[0092] The liquid level difference h formed by the highest liquid level height of the liquid storage cavity 120 and the horizontal plane where the air flow groove 143 is located satisfies the following conditions: 0 < ρ * g * h ≤ 30% * Po; where ρ represents the air density; g represents the liquid density; Po represents an atmospheric pressure. Where ρ represents the air density; g represents the liquid density; Po represents an atmospheric pressure.

[0093] Specifically, the greater the difference between the liquid pressure in the liquid storage cavity 120 and the external atmospheric pressure, the more it indicates that gas can flow from the outside to the liquid storage cavity 120, and the more leakage can be avoided. On the contrary, the smaller the difference between the liquid pressure in the liquid storage cavity 120 and the external atmospheric pressure, the less it indicates that gas can flow from the outside to the liquid storage cavity 120, and leakage may occur. After verification by the inventor of the present application, it is found that when the liquid level difference h satisfies the above conditions, the micro-channel 180 can pass gas and block liquid from leaking out.

[0094] In order to further block liquid leakage, the liquid level difference h can satisfy 0 < ρ * g * h ≤ 20% * Po; in order to further block liquid leakage, the liquid level difference h can satisfy 0 < ρ * g * h ≤ 10% * Po. For example, ρ * g * h ≤ 10% * Po, ρ * g * h ≤ 5% * Po, ρ * g * h ≤ 1% * Po.

[0095] Furthermore, the depth of the air flow groove 143 can be in the range of 0.1 mm to 0.4 mm, so as to block liquid from passing while allowing gas to pass. For example, the depth of the air flow groove 143 can be taken as 0.1 mm, 0.3 mm, 0.4 mm, etc. Furthermore, the depth of the air flow groove 143 can be in the range of 0.25 mm to 0.34 mm, so as to further ventilate and block liquid. For example, the depth of the air flow groove 143 can be taken as 0.25 mm, 0.30 mm, 0.34 mm, etc.

[0096] In the preset direction, the third seal groove 141 can be as Figure 8 and Figure 9The third sealing groove 141 may have two groove side walls that are opposite to each other, and the groove bottom wall may be connected between the two groove side walls; alternatively, the third sealing groove 141 may have a first groove side wall that may be used to support one side of the third sealing member 830 .

[0097] When the third sealing member 830 has two groove side walls, in order to allow the gas in the third sealing cavity 142 to flow in and out, for example, refer to Figure 8 In the preset direction, the height of the third sealing member 830 can be less than the height of the bottom wall of the groove. In this way, a channel connected to the microchannel 180 can be formed between the third sealing member 830 and one of the groove side walls, and a channel connected to the microchannel 180 can also be formed between the third sealing member 830 and the other groove side wall. In this way, the gas entering the third sealed cavity 142 can be Figure 8 The arrows shown indicate that the gas flows out of the third sealed cavity 142 after circumnavigating the third sealing member 830 for at least half a circle. Figure 11 As shown, it penetrates the bottom wall of the groove along a preset direction.

[0098] Another exemplary reference Figure 9 , both inner side walls may be provided with guide grooves 144, the guide grooves 144 may have an opening toward the third sealed cavity 142, and a channel for gas to flow through may be formed between the guide grooves 144 and the third sealing member 830, and the channel is connected to the microchannel 180. The gas entering the third sealed cavity 142 passes through the channel and the microchannel 180. Figure 9 The arrows shown indicate that the liquid flows out of the third sealing cavity 142 after surrounding the third sealing member 830 for at least half a circle. Further, the guide groove 144 may penetrate the groove side wall in a direction perpendicular to the groove bottom wall.

[0099] Similarly, when the third sealing member 830 has a groove side wall, the gas inflow and outflow in the third sealing cavity 142 can be achieved by reducing the height of the third sealing member 830 or providing a guide groove 144 on the groove side wall.

[0100] Optional, reference Figure 11 The circumferential length of the airflow groove 143 is shorter than the circumferential length of the sealing groove. There can be one or more airflow grooves 143. When there are multiple airflow grooves 143, the multiple airflow grooves 143 can be arranged at intervals.

[0101] Optionally, the cover 140 is detachably connected to the shell 130 , so that when the liquid storage cavity 120 needs to be drained, the cover 140 can be removed from the shell 130 to achieve the purpose of rapid drainage.

[0102] Figure 12 This is an exploded view of the oral cleaner provided by an embodiment of the present application. Figure 12, the oral cleaner provided by the embodiment of the present application may further include a mounting member 500. For the convenience of assembly, the mounting member 500 is fixed to the inner shell wall of the housing 100, and both the motor 200 and the pump mechanism 300 can be mounted on the mounting member 500. In this way, during assembly, the motor 200 and the pump mechanism 300 can be first assembled on the mounting member 500, and then the two can be loaded into the housing 100 as an assembled body.

[0103] It should be noted that both the motor 200 and the pump mechanism 300 generate vibrations during operation, resulting in poor connection reliability of the pipeline connecting the liquid outlet end 320 of the pump mechanism 300 and the first flow channel 211 of the output shaft 210, and it is extremely easy to fall off. To solve the above problems, the inventor of the present application disassembled the pump mechanism 300 into a power end 330, a liquid inlet end 310, and a liquid outlet end 320, and integrated the liquid outlet end 320 on the connecting member 400 and the mounting member 500 to reduce resonance and improve the connection reliability at the connection between the second flow channel 410 of the connecting member 400 and the liquid outlet end 320 of the pump mechanism 300.

[0104] Specifically, referring to Figures 13 - 16 , the second valve portion 321 of the liquid outlet end 320 can be integrated on the mounting member 500, and the second end cover portion 322 of the liquid outlet end 320 can be integrated on 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 can be sequentially arranged along the liquid outlet direction (the second axis Y direction) of the liquid outlet end 320 and can be connected by a third fastener 923. In this way, the mounting member 500 is blocked between the connecting member 400 and the power end 330 of the pump mechanism 300, so that most of the vibration of the pump body is transmitted to the mounting member 500. A vibration damping member can be provided between the mounting member 500 and the inner shell wall of the housing 100, and the mounting member 500 can eliminate vibration through vibration damping connection, so that the vibration transmitted from the power end 330 of the pump mechanism 300 to the connecting member 400 is small or even non-existent. In this way, the influence of the vibration of the power end 330 of the pump mechanism 300 on the connecting member 400 is reduced, and the connection reliability at the connection between the second flow channel 410 of the connecting member 400 and the liquid outlet end 320 of the pump mechanism 300 is improved. In addition, integrating the liquid outlet end 320 on the mounting member 500 and the connecting member 400 is not only convenient for assembly, but also the water path is shorter and the connection reliability is stronger.

[0105] Optionally, the power end 330 may include a pump housing 331 and a piston 332. One end of the pump housing 331 may have an opening. The mounting member 500 may cover the opening, and the mounting member 500 and the pump housing 331 may enclose a pump chamber of the pump mechanism 300 for the piston 332 to reciprocate along the liquid outlet direction of the liquid outlet end 320. The mounting member 500 may have a liquid outlet hole penetrating through the mounting member 500 and communicating with the pump chamber of the pump mechanism 300. The second valve portion 321 of the liquid outlet end 320 is disposed at the liquid outlet hole, and the second valve portion 321 of the liquid outlet end 320 may allow the liquid to be pumped out of the pump chamber through the liquid outlet hole and prevent the liquid from flowing into the pump chamber through the liquid outlet hole.

[0106] Specifically, the reciprocating movement of the piston 332 in the pump chamber may cause the liquid in the pump chamber to be pumped out through the liquid outlet hole; the valve of the liquid outlet end 320 functions as a one-way conduction to prevent the liquid from flowing back into the pump chamber through the liquid outlet hole. In this solution, the pump chamber and the liquid outlet hole are formed by the mounting member 500 to achieve the purpose of integrating the valve portion of the liquid outlet end 320.

[0107] Optionally, referring to Figure 16 , the power end 330 may further include a driving member 333. The driving member 333 may have a driving shaft that rotates relative to the pump housing 331. The driving shaft may drive an eccentric wheel to rotate relative to the pump housing 331, and the eccentric wheel may abut against the piston 332 to make a reciprocating movement.

[0108] Referring to Figures 15 - 17 , optionally, at least part of the connecting member 400 and the second end cover portion 322 of the liquid outlet end 320 may be an integral part formed by an integral molding process. The second end cover portion 322 of the liquid outlet end 320 may cover the liquid outlet hole, and the second end cover portion 322 of the liquid outlet end 320 may form a liquid outlet channel communicating the liquid outlet hole with the second flow channel 410.

[0109] Specifically, the liquid outlet channel of the second end cover portion 322 of the liquid outlet end 320 can guide the flow direction of the liquid flowing out of the liquid outlet hole. In this solution, the connecting member 400 and the second end cover portion 322 of the liquid outlet end 320 are an integral part, so that the liquid outlet channel and the second flow channel 410 are integral, which is beneficial to improving the connection reliability at the connection, improving the smoothness of liquid flow, and improving the convenience of assembly.

[0110] Optionally, the mounting member 500 may have a liquid inlet hole penetrating through the mounting member 500 and communicating with the pump chamber of the pump mechanism 300. The first valve portion 311 of the liquid inlet end 310 may be disposed at the liquid inlet hole, and the first valve portion 311 of the liquid inlet end 310 may allow the liquid to be pumped into the pump chamber through the liquid inlet hole and prevent the liquid from flowing out through the liquid inlet hole.

[0111] Specifically, the piston 332 reciprocates in the pump cavity, so that the liquid can be pumped into the pump cavity from the liquid inlet hole; the valve of the liquid inlet end 310 has a one-way conduction function to prevent the liquid from flowing out through the liquid inlet hole. In this solution, the pump cavity and the liquid inlet hole are formed by the mounting member 500, so as to achieve the purpose of integrating the first valve part 311 of the liquid inlet end 310.

[0112] Optionally, at least part of the connector 400 and the first end cover portion 312 of the liquid inlet end 310 may be an integral part formed by an integral molding process, and the first end cover portion 312 of the liquid inlet end 310 may cover the liquid inlet hole, and the first end cover portion 312 of the liquid inlet end 310 may be formed with a liquid inlet flow channel connected to the liquid inlet hole, and the liquid inlet flow channel may be connected to the third flow channel 420 of the connector 400. In this way, the liquid inlet channel 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, the connector 400 and the first end cover portion 312 of the liquid inlet end 310 are integrated, so that the liquid inlet channel and the third flow channel 420 are integrated, so as to improve the connection reliability of the connection point, improve the smoothness of the liquid flow, and improve the convenience of assembly.

[0113] refer to Figures 13 - 16 Optionally, the mounting member 500 may include a first mounting portion 510, and the first mounting portion 510 may have a first side and a second side disposed oppositely along the liquid outlet direction of the liquid outlet end 320. The motor 200 and the power end 330 of the pump mechanism 300 may be disposed at a first side of the first mounting portion 510 at intervals along the axial direction of the output shaft 210. The portion of the connector 400 integrated with the second end cover portion 322 of the liquid outlet end 320 may be disposed on the second side of the first mounting portion 510. The mounting member 500 may have a through hole 530 for the connector 400 to pass through and limit at least one side of the connector 400 along the axial direction of the output shaft 210. In this way, the through hole 530 may be used to limit the connector 400, so as to provide upward support and limit for the connector 400, so as to prevent the connector 400 from vibrating up and down. Optionally, the circuit board 720 may be mounted on the side of the first mounting portion 510 away from the motor 200 through the fourth fastener 924. A fourth vibration damper 914 may be disposed between the circuit board 720 and the inner wall of the housing 100 .

[0114] refer to Figure 12 and Figure 13, Optionally, the mounting member 500 may further include a second mounting portion 520. The second mounting portion 520 can be oppositely connected to the first side of the first mounting portion 510, and the second mounting portion 520 and the first mounting portion 510 can jointly enclose a receiving space for wrapping the outer side surface of the motor 200. In this way, the mounting member 500 wraps around the outer side surface of the motor 200, so that most of the vibrations of the motor 200 are transmitted to the mounting member 500, and further, the vibrations transmitted from the motor 200 to the connecting member 400 are small or even non-existent. Thus, the influence of the vibration of the power end 330 of the motor 200 on the connecting member 400 is reduced, and the connection reliability at the connection between the second flow channel 410 of the connecting member 400 and the first flow channel 211 of the motor 200 is improved. Optionally, referring to Figure 13 , the first mounting portion 510 and the second mounting portion 520 can be fixedly connected by a second fastener 922.

[0115] Optionally, a vibration damping member is interposed between the first mounting portion 510 and the outer side surface of the motor 200; and / or, a vibration damping member is interposed between the second mounting portion 520 and the outer side surface of the motor 200. In this way, the vibration transmission between the motor 200 and the mounting member 500 can be reduced by the vibration damping member. For example, Figure 13 , a second vibration damping member 912 is interposed between the front end of the motor 200 and the mounting member 500, and a third vibration damping member 913 is interposed between the rear end of the motor 200 and the mounting member 500.

[0116] Referring to Figure 17 , optionally, the connecting member 400 may have a mounting groove 450 for the output shaft 210 of the motor 200 to penetrate. A fourth seal 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 channel 211 of the output shaft 210 and the second flow channel 410 of the connecting member 400 can communicate at the mounting groove 450, and the seal can prevent the liquid at the communication from leaking out.

[0117] 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 can penetrate through the motor body 220, and both axial ends of the output shaft 210 can penetrate out of the motor body 220. The bottom surface of the motor body 220 and the inner groove wall of the mounting groove 450 can jointly enclose a limiting space for limiting the fourth seal 840. This limiting space can limit both ends of the fourth seal 840 in the axial direction of the output shaft 210. In this way, the bottom surface of the motor body 220 of the motor 200 and the bottom wall of the mounting groove 450 can be used to limit the fourth seal 840 to prevent the fourth seal 840 from moving with the vibration.

[0118] Referring to Figure 17, the second flow channel 410 may include a first flow segment 411 and a second flow segment 412 that are sequentially connected. The first flow segment 411 communicates with the liquid outlet end 320 and may extend along the first axis X direction, and there is a spacing between the first flow segment 411 and the first flow channel 211 in the second axis direction. The second flow segment 412 may connect the first flow segment 411 and the first flow channel 211, and the second flow segment 412 may include a first arc segment 4121, and the first arc segment 4121 may have an arc transition with the first flow segment 411. By using the arc transition, the resistance of the inner wall of the flow channel to the liquid is reduced, which is beneficial to the flow of the liquid.

[0119] Further, the first arc segment 4121 may be higher than the pump mechanism 300, and the first arc segment 4121 may have a center of the arc facing the pump mechanism 300, so that the liquid flows towards the first flow channel 211 more gently, further reducing the resistance of the inner wall of the flow channel to the liquid.

[0120] Optionally, the second flow segment 412 further includes a second arc segment 4122, and there is an arc transition between the second arc segment 4122 and the first flow channel 211. In order to utilize the arc transition to reduce the resistance of the inner wall of the flow channel to the liquid and facilitate the flow of the liquid.

[0121] Further, the second arc segment 4122 has a center of the arc facing the motor 200, so that the second arc segment 4122 is smoothly adjacent to the first flow channel 211, which is beneficial to the flow of the liquid.

[0122] Reference Figure 17 And Figure 18 , optionally, the connector 400 may include a first connection portion 430 and a second connection portion 440 that are connected. The first connection portion 430 may have a first flow segment 411 and a commutation chamber 431 that communicates with the first flow segment 411. The commutation chamber 431 may have a first inner arc surface 432, and the commutation chamber 431 may have an opening in the first axis X direction. At least part of the second connection portion 440 may be placed in the commutation chamber 431 from the opening of the commutation chamber 431 and may have a second inner arc surface 441. The first inner arc surface 432 and the second inner arc surface 441 may enclose the second flow segment 412.

[0123] Specifically, the second connecting portion 440 may include a cover plate section 442, a convex section 443, and a baffle section 444. The convex section 443 and the baffle section 444 may be respectively connected to both sides of the cover plate section 442 along the first axis X direction. The cover plate section 442 may cover the commutation cavity 431, and the baffle section 444 may be located in the commutation cavity 431 and may have a second inner arc surface 441. The cover plate section 442 may be provided with a through hole, the convex section 443 may surround the outside of the through hole, and the inner cavity of the convex section 443 may communicate with the through hole. The output shaft 210 may pass through the inner cavity of the convex section 443 and the through hole, and a fourth seal 840 is provided between the output shaft 210 and the inner cavity wall of the convex section 443. In this way, the convex section 443 and a part of the cover plate section 442 may form the installation groove 450 mentioned above.

Claims

1. An oral cleaning device, characterized in that: The invention comprises a housing (100), and a motor (200), a pump mechanism (300), and a connecting piece (400) arranged in an inner cavity of the housing (100); the inner cavity of the housing (100) comprises a liquid storage cavity (120); the output shaft (210) of the motor (200) has a first flow channel (211) arranged therethrough; The motor (200), the pump mechanism (300) and the liquid storage cavity (120) are arranged in sequence along the direction of a first axis (X); the liquid inlet end (310) and the liquid outlet end (320) of the pump mechanism (300) are arranged at one end of the pump mechanism (300) along the direction of a second axis (Y), and the liquid inlet end (310) and the liquid outlet end (320) of the pump mechanism (300) are arranged on a side of the pump mechanism (300) closer to the liquid storage cavity (120) along the direction of the first axis (X); the direction of the first axis (X) intersects with the direction of the second axis (Y); 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 channel connecting the liquid storage cavity (120) and the liquid inlet end (310) of the pump mechanism (300), and a second flow channel (410) connecting the liquid outlet end (320) of the pump mechanism (300) and the first flow channel (211).

2. The oral cleaning device according to claim 1, characterized in that: The second flow channel (410) comprises a first flow section (411) and a second flow section (412) which are connected in sequence; The first flow section (411) is connected to the liquid outlet (320) and extends along the first axis (X) direction, and a distance is provided between the first flow section (411) and the first flow channel (211) in the second axis (Y) direction; The second flow segment (412) connects the first flow segment (411) and the first flow channel (211), and the second flow segment (412) includes a first arc segment (4121), and a circular arc transition is formed between the first arc segment (4121) and the first flow segment (411).

3. The oral cleaning 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 facing the pump mechanism (300).

4. The oral cleaning device according to claim 2, characterized in that: The second flow section (412) further includes a second arc section (4122), and a circular arc transition is formed between the second arc section (4122) and the first flow channel (211).

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

6. The oral cleaning device according to any one of claims 2 to 5, characterized in that: The connecting member (400) comprises a first connecting portion (430) and a second connecting portion (440) connected to each other; The first connecting portion (430) comprises the first flow segment (411) and a reversing cavity (431) connected to the first flow segment (411), the reversing cavity comprises a first inner arc surface (432), and the reversing cavity (431) has an opening in the direction of the first axis (X); At least a portion of the second connecting portion (440) is built into the reversing cavity (431) through the opening of the reversing cavity (431) and has a second inner arc surface (441); the first inner arc surface (432) and the second inner arc surface (441) together enclose the second flow section (412).

7. The oral cleaning device according to claim 6, characterized in that: The second connecting portion (440) comprises a cover plate segment (442), a protruding segment (443) and a baffle segment (444); the protruding segment (443) and the baffle segment (444) are respectively connected to two sides of the cover plate segment (442) along the direction of the first axis (X); the cover plate segment (442) covers the reversing cavity, the baffle segment (444) is located in the reversing cavity and has the second inner arc surface (441); the cover plate segment (442) is provided with a through hole, the protruding segment (443) surrounds the outer side of the through hole, and the inner cavity of the protruding segment (443) is connected to the through hole; The output shaft (210) is inserted into the inner cavity of the raised section (443) and the through hole, and a sealing member (840) is provided between the output shaft (210) and the inner cavity wall of the raised section (443).

8. The oral cleaning device according to any one of claims 1 to 7, characterized in that: The pump mechanism (300) comprises a liquid inlet end (310), a liquid outlet end (320) and a power end (330), and the pump mechanism (300) is capable of pumping liquid from the liquid inlet end (310) into a pump chamber of the pump mechanism (300) and pumping liquid out from the liquid outlet end (320); wherein 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 into the connecting piece (400).

9. The oral cleaning device according to claim 8, characterized in that: It also includes a mounting member (500), the mounting member (500) being connected to the housing (100) in a vibration-damping manner, and the motor (200) and the power end (330) of the pump mechanism (300) being installed on the mounting member (500) at intervals; The second valve portion (321) of the liquid outlet end (320) is integrated with the mounting member (500), and the second end cover portion (322) of the liquid outlet end (320) is integrated with the connecting member (400); the power end (330), at least a portion of the connecting member (400), and at least a portion of the mounting member (500) are sequentially arranged along the liquid outlet direction of the liquid outlet end (320) and are connected by fasteners.

10. An oral cleaning device, characterized in that: The invention comprises a toothbrush (2000) and an oral cleaning device (1000) as described in any one of claims 1 to 9, wherein the toothbrush (2000) has a cavity (2200) and an outflow outlet (2300) connected to the cavity (2200), an output shaft (210) of a motor (200) of the oral cleaning device (1000) is connected to the toothbrush (2000) and drives the toothbrush (2000) to move, and a first flow channel (211) of the output shaft (210) of the motor (200) is connected to the cavity (2200) of the toothbrush (2000).

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