Liquid storage assembly and oral cavity cleaner

Abstract

The utility model discloses a liquid storage assembly and an oral cavity cleaner, and the liquid storage assembly comprises a machine shell which is provided with a first shell wall, the first shell wall is provided with a communication hole penetrating through the first shell wall in the first direction, and at least part of the inner surface of the first shell wall defines a liquid storage cavity; the limiting piece is arranged on the inner side of the first shell wall and limits a ventilation flow channel; the ventilation flow channel is communicated with the liquid storage cavity and the communication hole, at least part of the ventilation flow channel is arranged in the second direction, and the second direction intersects with the first direction. The liquid storage assembly and the oral cavity cleaner have the advantage of being good in ventilation effect.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of oral appliances, and in particular to a liquid storage assembly and an oral cleaner. Background Art

[0002] As people pay more and more attention to oral care, oral cleaners have gradually become common oral care tools in households. Among them, oral cleaners with irrigating functions, such as water flossers and integrated irrigating cleaners, use a water pump to pump out a high-pressure water jet, and use the impact force of the high-speed water jet to clean teeth and the spaces between teeth.

[0003] A related oral cleaner with a teeth-rinsing function may include a housing, a water pump, a water tank, and a teeth-rinsing head. The teeth-rinsing head may be arranged at one end of the housing, and the teeth-rinsing head has a teeth-rinsing channel for liquid flow. The water tank and the water pump are arranged in the inner cavity of the housing, and the water pump can pump the liquid in the water tank outward through the teeth-rinsing channel. In order to prevent the situation where water cannot be pumped out due to vacuum formed in the inner cavity of the water tank when the water pump is pumping water, the related oral cleaner is provided with a ventilation channel connecting the inner cavity of the water tank with the outside to balance the internal and external air pressures of the water tank.

[0004] However, the ventilation channel is relatively long, which is disadvantageous for gas flow. Utility Model Content

[0005] The purpose of the embodiments of the present application is to provide a liquid storage assembly and an oral cleaner that can solve the problem that the ventilation channel is long and is not conducive to gas flow.

[0006] To achieve the above-mentioned purpose, one aspect of an embodiment of the present application provides a liquid storage component for use in a device having a pump mechanism, the liquid storage component comprising: a casing having a first shell wall, the first shell wall being provided with a connecting hole extending through the first shell wall in a first direction, and at least a portion of the inner surface of the first shell wall defining a liquid storage cavity; a limiting member being arranged on the inner side of the first shell wall and defining a ventilation flow channel; the ventilation flow channel connecting the liquid storage cavity and the connecting hole, and at least a portion of the ventilation flow channel being arranged along a second direction, and the second direction intersecting with the first direction.

[0007] Optionally, the limiting member includes a first part and a second part connected in sequence; the first part covers the connecting hole; and the space gap between the second part and the inner surface of the first shell wall forms the ventilation flow channel.

[0008] Optionally, the first portion and the inner surface of the first shell wall define an air storage cavity that is in communication with the communicating hole and the ventilation flow channel.

[0009] Optionally, in the radial direction along the gas flow direction, the space gap between the second part and the inner surface of the first housing wall is between 0.04 mm and 0.2 mm.

[0010] Optionally, the first housing wall is provided with a first mating portion, and the second part is provided with a second mating portion. The second mating portion and the first mating portion are in concave-convex mating, and at least part of the air flow channel is defined between the second mating portion and the first mating portion.

[0011] Optionally, the liquid storage assembly further includes a seal; the defining member includes a third part, the third part is connected to one end of the first part away from the second part, and the third part and the inner surface of the first housing wall are sealed by the seal.

[0012] Optionally, the space gap between the second part and the inner surface of the first housing wall communicates with the top end of the liquid storage cavity.

[0013] Optionally, the defining member further includes a fourth part, the fourth part is connected to the first part or the second part, and the fourth part is arranged along a direction intersecting the inner surface of the first housing wall, and the fourth part and at least part of the inner surface of the first housing wall define the liquid storage cavity;

[0014] The gas storage cavity is arranged side by side with at least part of the liquid storage cavity; or, the gas storage cavity is located on one side of the liquid storage cavity in the second direction.

[0015] Optionally, the device with a pump mechanism includes a built-in component; the fourth part is provided with a mounting recess, and the mounting recess has an opening on a side facing away from the liquid storage cavity; the first part is provided with a groove, and the groove has a notch facing the communication hole; the defining member is configured to deform in cooperation with the built-in component when the built-in component is embedded in the mounting recess, so that the surface of the first part abuts against the inner surface of the first housing wall, and the inner cavity of the groove constitutes at least part of the gas storage cavity.

[0016] Optionally, the built-in component is snap-fitted with the mounting recess.

[0017] Optionally, the first housing wall is a side wall of the casing, and the outer surface of the first housing wall is provided with a plurality of protrusions, and at least part of the protrusions surround the outside of the communication hole.

[0018] Optionally, the liquid storage assembly further includes a breathable membrane that allows air to pass through but blocks liquid, and the breathable membrane covers the communication hole.

[0019] To achieve the above object, on the one hand, an embodiment of the present application provides an oral cleaner, which includes a liquid spraying head, a pump mechanism, and the liquid storage assembly as described above. The liquid spraying head is arranged at one end of the housing of the liquid storage assembly, and the liquid spraying head has a liquid flow channel communicating with the outside; the pump mechanism is arranged in the inner cavity of the housing, and the pump mechanism can pump the liquid in the liquid storage cavity into the liquid flow channel.

[0020] Optionally, the oral cleaner further includes a motor and a connecting member. The motor and the pump mechanism are arranged at intervals along the second direction, and the motor has an output shaft connected to the liquid spraying head and capable of moving the liquid spraying head. The output shaft of the motor has a first flow channel communicating with the liquid flow channel;

[0021] The connecting member has a second flow channel connecting the liquid outlet end of the pump mechanism and the first flow channel;

[0022] The liquid spraying head has bristles.

[0023] In summary, for the liquid storage assembly and the oral cleaner provided by the embodiments of the present application, the first housing wall can define the liquid storage cavity, and the communication hole is also arranged on the first housing wall, thereby reducing the distance between the communication hole and the liquid storage cavity. In addition, if the communication hole is directly connected to the liquid storage cavity, when the user shakes the device along the axial direction (the first direction) of the communication hole, the liquid in the liquid storage cavity is likely to splash out through this hole. To avoid this situation, in the embodiments of the present application, a ventilation flow channel is arranged between the communication hole and the liquid storage cavity, and at least part of the ventilation flow channel is arranged along the second direction, and the second direction intersects with the axial direction (the first direction) of the communication hole. In this way, it can be avoided that when the user shakes the device along the axial direction of the communication hole, the liquid splashes out from this ventilation hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] 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, other drawings can be obtained based on these drawings without creative efforts.

[0025] Figure 1 Schematic diagram of an oral cleaner provided by an embodiment of the present application;

[0026] Figure 2 For Figure 1 Longitudinal sectional view of the shown oral cleaner;

[0027] Figure 3 For Figure 2 Partial schematic diagram of the shown liquid storage assembly;

[0028] Figure 4For Figure 3 Partial schematic diagram at the communicated hole shown;

[0029] Figure 5 For Figure 2 Front view of the limiting member shown;

[0030] Figure 6 Partial schematic diagram of another liquid storage assembly provided by an embodiment of the present application.

[0031] Explanation of reference numerals:

[0032] 1000, liquid storage assembly;

[0033] 100, housing; 110, first housing wall; 111, inner surface; 112, outer surface; 120, communicated hole; 130, first mating portion;

[0034] 200, liquid storage cavity;

[0035] 300, limiting member; 310, first part; 320, second part; 330, third part; 340, fourth part; 350, second mating portion; 360, mounting recess; 370, groove;

[0036] 400, air flow channel;

[0037] 500, air storage cavity;

[0038] 600, seal;

[0039] 700, protrusion;

[0040] 800, breathable membrane;

[0041] 2000, cleaning accessory; 2100, brush body; 2200, bristles; 2300, liquid inlet; 2400, liquid outlet; 2500, cavity;

[0042] 3000, motor; 3100, motor body; 3200, output shaft;

[0043] 4000, pump mechanism;

[0044] 5000, connecting member; 5100, second flow channel;

[0045] 6000, built-in component. Detailed implementation manners

[0046] Figure 1 Schematic diagram of an oral cleaner provided by an embodiment of the present application, Figure 2 For Figure 1 A longitudinal sectional view of the oral cleaner shown. Refer to Figure 1 And Figure 2, 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 may be a liquid spraying head, a flushing and brushing integrated head or other devices capable of cleaning the oral cavity. Among them, the flushing and brushing integrated head refers to a device that has both a brush head and a liquid spraying head. For example, Figure 2 In Figure 2 , the cleaning accessory 2000 may include a brush body 2100 and bristles 2200 connected to one end of the brush body 2100. Among them, the brush body 2100 may have a liquid inlet 2300, a liquid outlet 2400 and a cavity 2500 communicating between the liquid inlet 2300 and the liquid outlet 2400. The bristles 2200 may surround the outer periphery of the liquid outlet 2400. The oral cleaning device 1000 may be assembled to the liquid inlet 2300. Among them, when the user activates the brushing function, the oral cleaning device 1000 may drive the brush body 2100 to move, and then drive the bristles 2200 to move; when the user activates the dental flushing function, the oral cleaning device 1000 may cause the liquid to flow into the cavity 2500 through the liquid inlet 2300 and flow out from the liquid outlet 2400.

[0047] Continue to refer to Figure 2 , the oral cleaning device 1000 may include a liquid storage component 1000 and a power component. Among them, the liquid storage component 1000 may include a housing 100. To facilitate the user's grip, the housing 100 may be shaped like a slender cylinder. The cross-sectional shape of the housing 100 may be circular or non-circular (such as D-shaped, oval, polygonal, etc.). Figure 3 For Figure 2 Partial schematic diagram of the liquid storage component shown. Refer to Figure 2 And Figure 3 , the housing 100 may have a first housing wall 110. The thickness direction of the first housing wall 110 is the first direction, and the first housing wall 110 may have an outer surface 112 and an inner surface 111 that are oppositely arranged in the first direction. Among them, at least part of the inner surface 111 of the first housing wall 110 may define a liquid storage cavity 200. That is to say, at least part of the inner surface 111 of the first housing wall 110 may serve as the inner cavity wall of the liquid storage cavity 200.

[0048] Continue to refer to Figure 2 , the power component may be arranged in the inner cavity of the housing 100 and may implement the dental flushing function or the flushing and brushing integrated function of the oral cleaner.

[0049] Exemplarily, when the cleaning accessory 2000 is a liquid spraying head, the power component may be a pump mechanism 4000. The liquid outlet end of the pump mechanism 4000 may be directly connected to the liquid inlet of the cleaning accessory 2000. During dental flushing, the pump mechanism 4000 may guide the liquid in the liquid storage cavity 200 to be pumped into the inner cavity 2500 of the cleaning accessory 2000 and sprayed out from the liquid outlet 2400 of the cleaning accessory 2000.

[0050] Another exemplary case is when the cleaning accessory 2000 is a flushing integrated head. Refer to Figure 2 , the power component may include a motor 3000 and a pump mechanism 4000. Among them, in order to maintain the slender shape requirement of the housing 100, the motor 3000 and the pump mechanism 4000 may be arranged in sequence along the length direction of the housing 100. The motor 3000 may be closer to the top end of the housing 100 than the pump mechanism 4000, so that the output shaft 3200 of the motor 3000 can pass through the top end of the housing 100 and be connected to the cleaning accessory 2000 to drive the cleaning accessory 2000 to move, thereby realizing the toothbrushing function. The motor 3000 may be a rotary motor capable of rotating the cleaning accessory 2000; alternatively, the motor 3000 may be a vibration motor (such as a sonic motor, etc.) capable of causing the cleaning accessory 2000 to swing at a high frequency. The motor 3000 may include a motor body 3100 and an output shaft 3200. Among them, the axis of the output shaft 3200 may coincide with or be parallel and spaced from the central axis of the housing 100. The output shaft 3200 may be axially disposed through the motor body 3100. In addition, the output shaft 3200 may have a first end and a second end disposed opposite to each other in its axial direction. The first end of the output shaft 3200 may pass through the motor body 3100 and be connected to the cleaning accessory 2000 to drive the cleaning accessory 2000 to move. In addition, the output shaft 3200 may have a first flow channel 3300 axially penetrating the output shaft 3200. The second end of the output shaft 3200 may pass through the motor body 3100 and be connected to the liquid outlet end of the pump mechanism 4000 through a connecting member 5000, so that the second flow channel 5100 of the connecting member 5000 communicates the first flow channel 3300 of the output shaft 3200 with the liquid outlet end of the pump mechanism 4000. Thus, when flushing the teeth, the pump mechanism 4000 can guide the liquid in the liquid storage cavity 200 ( Figure 2 The arrows show the flow path of the liquid) through the second flow channel 5100 of the connecting member 5000, the first flow channel 3300 of the output shaft 3200 of the motor 3000, the inner cavity 2500 of the cleaning accessory 2000, and spray out from the liquid outlet 2400 of the cleaning accessory 2000.

[0051] Refer to Figure 3 , as mentioned above, at least part of the inner surface 111 of the first housing wall 110 defines the liquid storage cavity 200. In order to ensure that the pump mechanism 4000 can suck the liquid in the liquid storage cavity 200, the first housing wall 110 may be provided with a communication hole 120 communicating with the outside and the liquid storage cavity 200. In order to prevent the liquid from flowing out of the communication hole 120 when the user places the oral cleaner horizontally or shakes the oral cleaner, the liquid storage component 1000 provided in the embodiment of the present application may further include a limiting member 300, and the limiting member 300 and the first housing wall 110 are used to form an air flow channel 400 that allows air to pass through but blocks the liquid flow.

[0052] Specifically, the communication hole 120 can penetrate the first housing wall 110 along the first direction. That is to say, the depth direction of the communication hole 120 is the first direction, and one end of the communication hole 120 in the first direction extends to the outer surface 112 of the first housing wall 110, and the other end of the communication hole 120 in the first direction extends to the inner surface 111 of the first housing wall 110. Thus, the first housing wall 110 not only defines the liquid storage cavity 200 but also has the communication hole 120, so as to reduce the distance between the communication hole 120 and the liquid storage cavity 200, thereby shortening the gas flow path and facilitating the suction of the pump mechanism 4000.

[0053] In addition, the limiting member 300 can be arranged on the inner side of the first housing wall 110 and define the air flow channel 400. Here, the inner side of the first housing wall 110 refers to the side of the inner surface 111 of the first housing wall 110, that is, the side of the first housing wall 110 facing the inner cavity of the housing 100. In addition, the air flow channel 400 connects the liquid storage cavity 200 and the communication hole 120, and at least part of the air flow channel 400 is arranged along the second direction. Here, the second direction intersects the first direction.

[0054] It can be understood that if the communication hole 120 is directly connected to the liquid storage cavity 200, when the user shakes the device along the axial direction (the first direction) of the communication hole 120, the liquid in the liquid storage cavity 200 is very likely to splash out through this hole. To avoid this situation, in the embodiment of the present application, an air flow channel 400 is arranged between the communication hole 120 and the liquid storage cavity 200, and at least part of the air flow channel 400 is arranged along the second direction, and this second direction intersects the axial direction (the first direction) of the communication hole 120. Thus, it can be avoided that when the user shakes the device along the axial direction of the communication hole 120, the liquid splashes out from this ventilation hole.

[0055] Optionally, the communication hole 120 can be one or more. When there are multiple communication holes 120, the multiple communication holes 120 can be arranged around the first housing wall 110. The shape of the communication hole 120 can be various. For example, the cross-sectional shape of the communication hole 120 can be circular, waist-shaped, rectangular, etc. The shape of the longitudinal section of the communication hole 120 can be rectangular, conical, etc.

[0056] Figure 4 For Figure 3 the partial schematic diagram at the position of the shown communication hole 120. Refer to Figure 3 With Figure 4, optionally, the limiting member 300 may include a first part 310 and a second part 320 connected in sequence. The first part 310 may cover the communication hole 120, and a space gap between the second part 320 and the inner surface 111 of the first housing wall 110 forms the air flow channel 400. Thus, the cross-sectional area of the air flow channel 400 formed by the space gap is small and the length is long, which has the advantage of being easy to process.

[0057] Further, in the radial direction along the gas flow direction, the space gap between the second part 320 and the inner surface 111 of the first housing wall 110 is between 0.04 mm and 0.2 mm to balance the ventilation effect and the liquid blocking effect. Here, the radial direction along the gas flow direction refers to the distance between the second part 320 and the inner surface 111 of the first housing wall 110 (in the direction perpendicular to the gas flow direction).

[0058] Reference Figure 3 And Figure 4 , further, the first housing wall 110 may be provided with a first fitting portion 130, the second part 320 is provided with a second fitting portion 350, the second fitting portion 350 and the first fitting portion 130 are in concave-convex fit, and at least part of the air flow channel 400 is defined between the second fitting portion 350 and the first fitting portion 130. For example, Figure 3 And Figure 4 in, the first fitting portion 130 is a groove body, the second fitting portion 350 is a convex block embedded in the groove body; again, the first fitting portion 130 is a convex block, and the second fitting portion 350 is a groove body for accommodating the convex block. Further, the first fitting portion 130 and the second fitting portion 350 may be snap-connected to achieve the assembly between the limiting member 300 and the first housing wall 110 while forming the air flow channel 400.

[0059] Optionally, the space gap between the second part 320 and the inner surface 111 of the first housing wall 110 may communicate with the top end, the middle part, etc. of the liquid storage cavity 200, Figure 3 And Figure 4 Taking the example that the space gap communicates with the top end of the liquid storage cavity 200 is shown.

[0060] Optionally, the liquid storage assembly 1000 provided in the embodiment of the present application may further include a breathable film 800 for ventilation and liquid blocking, and the breathable film 800 may cover the communication hole 120, so as to further improve the liquid blocking effect. Among them, the breathable film 800 may be disposed on one side of the ventilation hole along the first direction, or the breathable film 800 may be embedded in the ventilation hole.

[0061] The first part 310 can have the following possible setting manners: Exemplarily, the first part 310 may be slightly larger than the communication hole 120, and there is no air flow channel between the first part 310 and the first housing wall 110. The gas can directly enter the air flow channel 400 formed by the second part 320 and the first housing wall 110 through the ventilation hole.

[0062] Another exemplarily, referring to Figures 3 - 5 , the first part 310 and the inner surface 111 of the first housing wall 110 define a gas storage cavity 500 that is connected to the communication hole 120 and the air flow channel 400. In this way, it is convenient for the flow of gas. Further, the first part 310 may be provided with a groove 370. The groove 370 may have a notch facing the communication hole 120, and the inner cavity of the groove 370 constitutes at least part of the gas storage cavity 500. In this way, the inner cavity of the groove 370 is used to form the gas storage cavity 500 to improve the ventilation effect.

[0063] Optionally, the liquid storage component 1000 provided in the embodiment of the present application may further include a seal 600. The limiting member 300 may further include a third part 330. The third part 330 may be connected to one end of the first part 310 away from the second part 320, and the third part 330 and the inner surface 111 of the first housing wall 110 may be sealed by the seal 600. In this way, it is possible to prevent liquid or gas from entering the upper side of the liquid storage cavity 200 and avoid contaminating the power component provided above the liquid storage cavity 200. In addition, the seal 600 may be made of an elastic sealing material such as rubber.

[0064] Further, the limiting member 300 may further include a fourth part 340. The fourth part 340 may be connected to the first part 310 or the second part 320, and the fourth part 340 may be arranged in a direction intersecting the inner surface 111 of the first housing wall 110. And, the fourth part 340 and at least part of the inner surface 111 of the first housing wall 110 may define the liquid storage cavity 200. The gas storage cavity 500 and at least part of the liquid storage cavity 200 may Figure 3 be Figure 4 arranged side by side as shown; or, the gas storage cavity 500 may be located on one side of the liquid storage cavity 200 in the second direction as shown in Figure 6 .

[0065] Optionally, the oral cleaner may further include a built-in component 6000 (such as a battery, etc.). The fourth part 340 may be provided with an installation recess 360, and the installation recess 360 has an opening on a side facing away from the liquid storage cavity 200. The first part 310 is provided with a groove 370, and the groove 370 has a notch facing the communication hole 120. The limiting member 300 is configured to deform in cooperation with the built-in component 6000 when the built-in component 6000 is embedded in the installation recess 360, so that the surface of the first part 310 abuts against the inner surface 111 of the first housing wall 110, and the inner cavity of the groove 370 constitutes at least part of the air storage cavity 500. Thus, by providing the groove 370, the air storage cavity 500 is formed to facilitate the flow of gas. In addition, after the built-in component 6000 is placed in the installation recess 360, the limiting member 300 expands and deforms outward, so that the surface of the limiting member 300 can be tightly abutted against the inner surface 111 of the first housing wall 110, so as to form the width of the unified air storage cavity 500 (i.e., the depth of the groove 370) and the width of the air flow channel 400, so as to improve the yield rate.

[0066] Further, the built-in component 6000 and the installation recess 360 may be snap-connected to facilitate the disassembly and assembly of the built-in component 6000.

[0067] Reference Figure 1 , optionally, the first housing wall 110 may be a side wall of the housing 100, and a plurality of protrusions 700 may be provided on the outer surface 112 of the first housing wall 110, and at least a part of the protrusions 700 surround the outside of the communication hole 120. Thus, by providing the plurality of protrusions 700, when the user holds the housing 100, the ventilation hole will not be blocked, which is conducive to the flow of air.

[0068] Among them, terms such as "upper" and "lower" are used to describe the relative positional relationship of each structure in the drawings, only for the convenience of narration, rather than to limit the scope of implementation of the present application. The change or adjustment of its relative relationship, without substantial change in technical content, should also be regarded as the scope of implementation of the present application.

[0069] It should be noted that: in the present application, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0070] In addition, in this application, unless otherwise clearly specified and defined, terms such as "installed", "connected", "linked", "fixed", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal connection of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0071] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0072] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of this application, rather than to limit them; although the technical solutions of this application have been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of each embodiment of this application.

Claims

1. A liquid storage assembly for a device having a pump mechanism, characterized in that: The liquid storage component comprises: The housing has a first housing wall, wherein the first housing wall is provided with a communication hole penetrating the first housing wall along a first direction, and at least a portion of an inner surface of the first housing wall defines a liquid storage cavity; a limiting member, disposed on the inner side of the first shell wall and defining a ventilation flow channel; The ventilation flow channel communicates with the liquid storage cavity and the communication hole, and at least a portion of the ventilation flow channel is arranged along a second direction, and the second direction intersects with the first direction.

2. The liquid storage assembly according to claim 1, characterized in that The limiting member includes a first part and a second part connected in sequence; The first portion covers the communicating hole; The space between the second portion and the inner surface of the first shell wall forms the ventilation flow channel.

3. The liquid storage assembly according to claim 2, characterized in that The first portion and the inner surface of the first shell wall define an air storage cavity that is in communication with the communication hole and the ventilation flow channel.

4. The liquid storage assembly according to claim 2, characterized in that Along the radial direction of the gas flow direction, the space gap between the second portion and the inner surface of the first shell wall is between 0.04 mm and 0.2 mm.

5. The liquid storage assembly according to claim 2, characterized in that: The first shell wall is provided with a first matching portion, and the second portion is provided with a second matching portion. The second matching portion is matched with the first matching portion in a concave-convex manner, and at least a portion of the air flow channel is defined between the second matching portion and the first matching portion.

6. The liquid storage assembly according to any one of claims 2 to 5, characterized in that: Also included are seals; The limiting member includes a third part, which is connected to an end of the first part away from the second part, and the third part is sealed to the inner surface of the first shell wall by the sealing member.

7. The liquid storage assembly according to claim 3, characterized in that: The space between the second portion and the inner surface of the first shell wall is communicated with the top end of the liquid storage cavity.

8. The liquid storage assembly according to claim 7, characterized in that: The limiting member further includes a fourth portion, the fourth portion being connected to the first portion or the second portion, and the fourth portion being arranged in a direction intersecting the inner surface of the first shell wall, and the fourth portion and at least a portion of the inner surface of the first shell wall defining the liquid storage cavity; The gas storage cavity is arranged side by side with at least a portion of the liquid storage cavity; or, the gas storage cavity is located on one side of the liquid storage cavity in the second direction.

9. The liquid storage assembly according to claim 8, characterized in that The device having a pump mechanism includes built-in components; The fourth portion is provided with a mounting recess, and the mounting recess has an opening on a side facing away from the liquid storage cavity; The first portion is provided with a groove, wherein the groove has a notch facing the communicating hole; The limiting member is configured to deform in cooperation with the built-in component when the built-in component is embedded in the installation recess, so that the surface of the first part abuts against the inner surface of the first shell wall, and the inner cavity of the groove constitutes at least part of the gas storage cavity.

10. The liquid storage assembly according to claim 9, characterized in that: The built-in component is snap-connected with the installation recess.

11. The liquid storage assembly according to any one of claims 1 to 5, characterized in that: The first shell wall is a side wall of the housing. A plurality of protrusions are provided on an outer surface of the first shell wall, and at least part of the protrusions surround the outer side of the communicating hole.

12. The liquid storage assembly according to any one of claims 1 to 5, characterized in that: It also includes a breathable membrane that is air-permeable and liquid-resistant, and the breathable membrane covers the communicating hole.

13. An oral cleaner, characterized in that: It includes a liquid spray head, a pump mechanism and a liquid storage component as described in any one of claims 1 to 12, wherein the liquid spray head is arranged at one end of the housing of the liquid storage component, and the liquid spray head has a liquid flow channel connected to the outside world; the pump mechanism is arranged in the inner cavity of the housing, and the pump mechanism can pump the liquid in the liquid storage cavity into the liquid flow channel.

14. The oral cleaner according to claim 13, characterized in that The apparatus further comprises a motor and a connecting member, wherein the motor and the pump mechanism are spaced apart along the second direction, and the motor has an output shaft connected to the liquid spray head to enable the liquid spray head to move, and the output shaft of the motor has a first flow channel connected to the liquid flow channel; The connecting member has a second flow channel connecting the liquid outlet end of the pump mechanism and the first flow channel; The liquid ejecting head has bristles.

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