Water flosser pump body structure and water flosser

Abstract

The pump body structure of the water flosser is characterized by comprising a shell, a water pump assembly, a transmission assembly, and a power assembly. The water pump assembly comprises a pump body, a liquid inlet valve, a liquid outlet valve, and an elastic diaphragm. The water inlet valve is provided with a water inlet, the water outlet valve is provided with a water outlet, the water inlet valve is also provided with a water inlet valve plate, the water outlet valve is provided with a water outlet valve plate, the pump body has a water flow cavity inside, the water inlet valve plate and the water flow cavity form a water inlet channel, and the water outlet valve plate and the water flow cavity form a water outlet channel; when the transmission mechanism rotates, the elastic diaphragm can be driven to deform repeatedly to cause the pressure in the water flow cavity to change, thereby realizing the liquid suction and liquid spraying process of the water flosser for flushing teeth.

Description

Technical Field

[0001] The invention belongs to the technical field of oral irrigators, and in particular relates to a water pump structure of an oral irrigator. Background Art

[0002] The water flosser is an oral cleaning device that uses flowing pulsed water to remove dental plaque and food residue in the gum crevices, thereby improving oral health. The pump structure of the water flosser is the core component of the water flosser. The existing water flow chamber of the water flosser diaphragm pump is large. In the single-process pumping and spraying operation, the liquid cannot be completely discharged, resulting in air accumulation in the pump body cavity during the reciprocating motion. The insufficient air pressure in the pump body cavity causes insufficient water intake to the pump body, which in turn causes insufficient water output from the pump body, affecting the normal use of the water flosser. Summary of the invention

[0003] In order to overcome the deficiencies of the prior art, the present invention provides a water flosser pump body structure and a water flosser.

[0004] The pump body structure of the water flosser is characterized by comprising a shell, a water pump assembly, a transmission assembly, and a power assembly. The water pump assembly comprises a pump body, a water inlet valve member, a water outlet valve member, and an elastic diaphragm. The water inlet valve member is provided with a water inlet, the water outlet valve member is provided with a water outlet, the water inlet valve member is also provided with a water inlet valve plate, the water outlet valve member is provided with a water outlet valve plate, the pump body has a water flow cavity inside, the water inlet valve plate and the water flow cavity form a water inlet channel, and the water outlet valve plate and the water flow cavity form a water outlet channel; when the transmission mechanism rotates, the elastic diaphragm can be driven to deform repeatedly to cause the pressure in the water flow cavity to change, thereby realizing the liquid suction and liquid spraying process of the water flosser for flushing teeth.

[0005] According to one embodiment of the present invention, the elastic diaphragm is sealingly connected to the pump body, the pump body includes an upper pump body and a lower pump body, the two ends of the pump body connected to the elastic diaphragm have pump body end surface chamfers, and the upper pump body has a first drainage channel and a second drainage channel along the direction of the liquid outlet channel.

[0006] According to an embodiment of the present invention, the elastic diaphragm includes a deformation portion and a connection portion, the connection portion is used to be connected and fixed to the pump body, and the deformation portion includes a first deformation portion and a second deformation portion.

[0007] According to an embodiment of the present invention, the thickness of the first deformation portion of the elastic diaphragm is greater than that of the second deformation portion, the length of the second deformation portion is smaller than that of the first deformation portion, and the hardness of the first deformation portion is greater than that of the second deformation portion.

[0008] According to an embodiment of the present invention, the elastic diaphragm is integrally formed and is made of elastic materials such as rubber and silicone.

[0009] According to an embodiment of the present invention, the transmission assembly includes a gear transmission mechanism and a connecting rod, wherein the gear transmission mechanism is connected to the connecting rod and is used to drive the connecting rod to move.

[0010] According to an embodiment of the present invention, the connecting rod is connected to the elastic diaphragm through a connecting member.

[0011] According to an embodiment of the present invention, the gear transmission mechanism includes a gear and an eccentric gear, the gear meshes and rotates with the eccentric gear, and the eccentric gear also includes an eccentric gear fixing shaft, and the eccentric gear fixing shaft is connected to the connecting rod.

[0012] According to one embodiment of the present invention, when the gear transmission mechanism pulls the elastic diaphragm from the inside to the outside, the deformation part of the elastic diaphragm can be deformed toward the outside of the water flow cavity, so that the volume inside the water flow cavity increases, and external water can enter the water cavity from the water inlet through the water inlet valve plate.

[0013] According to one embodiment of the present invention, when the gear transmission mechanism pushes the elastic diaphragm from the outside to the inside, the elastic diaphragm can be deformed toward the inside of the water flow cavity, so that the volume inside the water flow cavity is reduced, and the water in the water flow cavity can be sprayed out from the water outlet through the water outlet valve plate.

[0014] According to one embodiment of the present invention, the single water inlet volume of the water inlet is less than or equal to the maximum water inlet holding volume of the water flow chamber, and the water flow chamber is used to hold a tooth flushing solution.

[0015] According to an embodiment of the present invention, the water inlet valve plate and the water outlet valve plate are one-way valve plates, and the flow direction of the liquid through the valve plates is one-way flow.

[0016] According to an embodiment of the present invention, the driving mechanism comprises a micro motor having a motor output shaft.

[0017] According to an embodiment of the present invention, the upper pump body is connected to the water inlet valve member and the water outlet valve member, and sealing rings are provided at the connection between the water inlet valve member, the water outlet valve member and the upper pump body.

[0018] According to an embodiment of the present invention, a water inlet valve plate limiting groove is provided on the water inlet valve member, and the limiting groove limits the opening and closing angle of the water inlet valve plate.

[0019] According to one embodiment of the present invention, the oral irrigator includes the above-mentioned oral irrigator pump body structure.

[0020] The water flosser pump body structure and water flosser provided by the present invention replace the piston movement of the traditional piston with the reciprocating motion of the elastic diaphragm, thereby reducing the energy loss caused by friction; and the water flow chamber in the pump body has a small volume, and the distance from the water inlet to the water flow chamber is short. A drainage channel is provided in the water pump, and in a single process of pumping and spraying water, the liquid in the water flow chamber can be completely discharged, reducing the reaction force of the water pressure on the elastic diaphragm in the reciprocating motion of the water pump, and solving the problem that the air is accumulated in the water pump chamber under the natural water inlet and outlet state of the traditional diaphragm pump and cannot be eliminated, resulting in abnormal water inlet and outlet of the pump body, thereby improving the flushing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] 1-shell, 11-upper shell, 12-lower shell;

[0022] 2-water pump assembly, 20-pump body, 201-pump body end chamfer, 21-upper pump body, 211-first drainage channel, 212-second drainage, 22-lower pump body, 23-water inlet valve member, 231-water inlet, 232-water inlet valve plate, 233-limiting groove, 24-water outlet valve member, 241-water outlet, 242-water outlet valve plate, 25-elastic diaphragm, 251-deformation part, 2511-first deformation part, 2512-second deformation part, 252-connecting part, 26-water flow cavity, 261-water inlet flow channel, 262-water outlet flow channel, 27-sealing ring, 28-connecting part;

[0023] 3-transmission assembly, 31-gear transmission mechanism, 311-gear, 312-eccentric gear, 3121-eccentric gear fixing shaft, 32-connecting rod, 321-first fixing part, 322-second fixing part;

[0024] 4-driving assembly, 41-micro motor, 42-motor output shaft;

[0025] Figure 1 It is a schematic diagram of the pump body structure of the oral irrigator and the structure of the oral irrigator of the present invention;

[0026] Figure 2 An exploded view of the pump structure of the oral irrigator and the oral irrigator of the present invention;

[0027] Figure 3 A cross-sectional view of the pump body structure and the oral irrigator of the present invention;

[0028] Figure 4 It is an enlarged schematic diagram of the pump body structure of the oral irrigator and the pump body structure of the oral irrigator of the present invention;

[0029] Figure 5 It is a schematic diagram of the pump body structure and the elastic diaphragm structure of the oral irrigator of the present invention;

[0030] Figure 6It is a cross-sectional view of the pump body structure of the oral irrigator of the present invention and the oral irrigator in the liquid extraction state;

[0031] Figure 7 It is a schematic diagram of the pump structure of the oral irrigator of the present invention and the liquid flow of the oral irrigator in the liquid extraction state;

[0032] Figure 8 It is a cross-sectional view of the pump body structure of the oral irrigator of the present invention and the oral irrigator in the liquid spraying state;

[0033] Fig. 9 It is a schematic diagram of the pump structure of the oral irrigator of the present invention and the liquid flow of the oral irrigator in the liquid spraying state;

[0034] Fig.10 It is an enlarged schematic diagram of the pump structure and water inlet valve of the oral irrigator of the present invention;

[0035] Fig.11 It is a cross-sectional view of another embodiment of the water flosser pump structure and the water flosser of the present invention. DETAILED DESCRIPTION

[0036] The exemplary embodiments of the present application are described below with reference to the accompanying drawings. It should be understood that these specific descriptions are only used to teach those skilled in the art how to implement the present application, and are not intended to exhaust all possible methods of the present application, nor to limit the scope of the present application.

[0037] The serial numbers of the components in this document, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings).

[0038] See also Figure 1-Figure 11 The present invention provides a water flosser pump body, which is used to be installed on a water flosser (not shown in the figure).

[0039] See also Figure 1-Figure 11 The present invention provides a pump body structure of a water flosser, comprising a housing 1, a water pump assembly 2, a transmission assembly 3 and a drive assembly 4. The drive assembly 4 is used to drive the transmission assembly 3, and the transmission assembly 3 provides power to the water pump assembly 2 through reciprocating motion, thereby realizing the water intake and water spraying functions of the water pump assembly 2. The housing 1 comprises an upper housing 11 and a lower housing 12, and the housing has an installation cavity, and the transmission assembly 3 and the power assembly 4 are installed in the installation cavity.

[0040] The water pump assembly 2 includes a pump body 20, and the pump body 20 includes an upper pump body 21 and a lower pump body 22. The water pump assembly 2 also includes a water inlet valve member 23, a water outlet valve member 24, and an elastic diaphragm 25. The water inlet valve member 23 is provided with a water inlet 231, and the water outlet valve member 24 is provided with a water outlet 241. The water inlet valve member 23 is also provided with a water inlet valve plate 232, and the water outlet valve member 24 is provided with a water outlet valve plate 242. The pump body has a water flow chamber 26 inside, and the water flow chamber 26 is used to accommodate the tooth flushing liquid. The upper pump body 21 is connected to the water inlet valve member 23 and the water outlet valve member 24, and the upper pump body 21 and / or the lower pump body 22 are used to fix the elastic diaphragm 25.

[0041] Reference Figure 6-Figure 9 The water inlet valve plate 232 and the water flow chamber 26 form a water inlet channel 261, and the water outlet valve plate 242 and the water flow chamber 26 form a water outlet channel 262. When the water pump assembly 2 performs a water pumping operation, the water outlet valve plate 242 is closed, the elastic diaphragm 25 shrinks downward and deforms, the volume of the water flow chamber 26 increases, the pressure in the water flow chamber 26 decreases, and the liquid flows in from the water inlet 231, impacts the water inlet valve plate 232 to open it, flows into the water inlet channel 261 and reaches the water flow chamber 26; when the water pump assembly 2 performs a water spraying operation, the water inlet valve plate 232 is closed, the elastic diaphragm 25 pushes upward and deforms, the volume of the water flow chamber 26 decreases, the liquid flows into the water outlet channel 262 and impacts the water outlet valve plate 242 to open it, and the liquid is ejected from the water outlet 241.

[0042] Reference Figure 3-Figure 5 The elastic diaphragm 25 is sealed and connected to the pump body 20. The elastic diaphragm 25 includes a deformation portion 251 and a connecting portion 252. The connecting portion 252 is a peripheral edge extending along the axial direction of the elastic diaphragm 25, and the peripheral edge is annular; the lower end surface of the upper pump body 21 and / or the upper end surface of the lower pump body 22 are provided with a recessed structure, and the peripheral edge is tightly crimped in the recessed structure to prevent liquid from penetrating into the drive assembly 4 from the water flow cavity, causing damage to the motor and affecting the normal use of the water flosser.

[0043] The deformation part 251 includes a first deformation part 2511 and a second deformation part 2512. The thickness of the first deformation part 2511 is greater than that of the second deformation part 2512, which can reduce the wear caused by the reciprocating motion of the connecting rod 32 and increase the service life of the elastic diaphragm 25; the hardness of the first deformation part 2511 is greater than that of the second deformation part 2512, so as to avoid the elastic diaphragm 25 from bulging when the water pump assembly 2 moves too fast, resulting in insufficient water pumping or insufficient impact force. On the other hand, the second deformation part 2512 is a shorter and thinner elastic material than the first deformation part 2511, so that the transmission assembly 3 can more easily push the elastic diaphragm to deform, improve the efficiency of the water pump assembly 2 in pumping and spraying liquid, and improve the user experience.

[0044] Reference Figure 4 The upper pump body 21 and the lower pump body 22 have pump body end face chamfers 201, which reduce the wear at the connection between the elastic diaphragm 25 and the pump body 20 during the activity, increase the service life of the elastic diaphragm 25, and prevent the connection edge of the elastic diaphragm 25 from being damaged. The pump body 20 cannot form a closed space, resulting in the water pump assembly 2 being unable to perform normal pumping and spraying activities.

[0045] Reference Figure 6-Figure 9 A first drainage channel 211 and a second drainage channel 212 are provided on the upper pump body 21, one end of the first drainage channel 211 is connected to the second deformation portion 2512 of the elastic diaphragm 25, the other end of the first drainage channel 211 is connected to one end of the water inlet channel 261, and the first drainage channel 211 extends toward the water outlet channel 262; one end of the second drainage channel 212 is connected to the water inlet channel 261, the other end of the second drainage channel 212 is connected to one end of the water outlet channel 262, and the second drainage channel 212 extends toward the water outlet channel 262.

[0046] When the water pump assembly 2 is in the liquid spraying state, the liquid in the water flow chamber 26 flows along the direction of the first drainage channel 211 and the second drainage channel 212, converges to the outlet flow channel 262, impacts the outlet valve plate 242, flows into the nozzle pipe from the outlet 241, and then is ejected from the nozzle port. In the process of reducing the volume of the water flow chamber 26, the first drainage channel 211 and the second drainage channel 212 guide the liquid in the water flow chamber 26 to converge in the direction of the outlet flow channel 262, so as to reduce the reaction force of the water pressure on the elastic diaphragm 25 during the rapid reciprocating motion of the water pump assembly 2, and improve the pumping and spraying capabilities of the water pump assembly 2.

[0047] The water inlet valve member 23 is provided with a limiting groove 233 for the water inlet valve plate 232, and the limiting groove 233 limits the opening and closing angle of the water inlet valve plate 232 to prevent the water inlet valve plate 232 from being excessively deformed after being impacted by high-speed and high-pressure water flow, resulting in poor elastic recovery ability, so that in the process of reducing the volume of the water flow chamber 26 (liquid spraying process), the water inlet valve plate 232 fails to properly cover the water inlet, resulting in poor sealing effect at this location, resulting in air entering the pump body cavity through the gap at the water inlet 231 during the water discharge process, so that sufficient pressure cannot be formed in the pump body cavity, resulting in insufficient amount of liquid sprayed in a single water discharge process.

[0048] The transmission assembly 3 includes a gear transmission mechanism 31 and a connecting rod 32. The connecting rod 32 includes a first fixing portion 321 and a second fixing portion 322. The first fixing portion 321 is connected to the transmission mechanism 31, and the second fixing portion 322 is connected to the elastic diaphragm 25 via a connecting member 28. The gear transmission mechanism 31 is used to drive the connecting rod 32 to move. When the gear rotation mechanism 31 rotates, the connecting rod 32 is driven to move. The connecting rod 32 can drive the elastic diaphragm 25 to deform repeatedly, causing the pressure in the water flow chamber 26 to change, thereby realizing the liquid suction and liquid spraying process of the water irrigator for rinsing teeth.

[0049] The gear transmission mechanism 31 includes a gear 311 and an eccentric gear 312. The eccentric gear 312 has a tooth groove that matches the gear 311. The gear 311 meshes and rotates with the eccentric gear 312. The eccentric gear 312 also includes an eccentric gear fixing shaft 3121. The eccentric gear fixing shaft 3121 is connected to the second fixed portion 322 of the connecting rod 32. The gear 311 is connected to the motor output shaft 42. The gear 311 converts the horizontal rotational motion of the drive component 4 into the vertical rotational motion. The eccentric gear 312 converts the rotational motion of the gear 311 into reciprocating motion, providing power for the movement of the connecting rod 32 and the elastic diaphragm 25.

[0050] During the reciprocating pumping and water spraying movement of the water flosser pump body, the reciprocating movement of the elastic diaphragm 25 replaces the piston movement of the traditional piston, reducing the energy loss caused by friction. The water flow chamber 26 in the water pump is small in volume, the distance from the water inlet 231 to the water flow chamber 26 is short, and the water pump 20 is provided with a first drainage channel 211 and a second drainage channel 212. In the single-process pumping and water spraying operation, the drainage channel guides the liquid to converge at the water outlet channel 262, so that the liquid in the water flow chamber is completely discharged, reducing the reaction force of the water pressure on the elastic diaphragm 25, solving the problem that the air in the water pump chamber is accumulated and cannot be removed in the natural water inlet and outlet state of the traditional diaphragm pump, resulting in abnormal water inlet and outlet of the pump body, and improving the flushing efficiency.

[0051] In the embodiment of the present application, when the water pump assembly 2 is in a single pumping-spraying process, the single water inlet volume of the water inlet 231 is less than or equal to the maximum water inlet capacity of the water flow chamber 26, so as to ensure that the liquid in the water flow chamber 26 can be completely sprayed out from the water outlet 241, avoiding liquid backflow or overflow, and avoiding liquid gathering to cause bubbles in the water flow chamber.

[0052] In the embodiment of the present application, sealing rings 27 are provided at the connection between the water inlet valve member 23, the water outlet valve member 24 and the upper pump body 21 to prevent liquid leakage during the water inlet or water outlet process.

[0053] In the present embodiment of the application, the water outlet valve member 24 is directly connected to the water flosser nozzle valve member (not shown in the figure), thereby reducing water pressure loss and improving water flossing efficiency.

[0054] In the present embodiment of the application, the water inlet valve plate 232 and the water outlet valve plate 242 are one-way valve plates, and the flow direction of the liquid through the valve plates is one-way flow. In particular, the water outlet valve plate is a duckbill valve plate, which is easier to assemble and can also isolate the liquid.

[0055] In the present embodiment of the application, the driving component 4 uses a well-known micro motor 41, and the micro motor also includes a motor output shaft 42, which is not limited in the present application.

[0056] In the embodiment of the present application, the number of teeth of the gear 311 and the eccentric gear 312 can be set as needed, and the present application does not limit it.

[0057] The first deformation part 251 of the elastic diaphragm is connected with a connecting piece 28, a part of the connecting piece 28 is located inside the first deformation part 2511, and another part is located outside the first deformation part 2511, and the part of the connecting piece 28 located outside the first deformation part 2511 is used to connect with the connecting rod 32. For example, the connecting piece 28 can be a screw, and the elastic diaphragm 25 is connected to the connecting rod 32 by the screw. Specifically, the center of the first deformation part 2511 of the elastic diaphragm 25 is fixedly connected with a screw, and a nut is fixed on the second fixing part 322 of the connecting rod and connected with the screw of the first deformation part 2511, and the first deformation part 2511 and the nut are bonded by vulcanization.

[0058] In the embodiment of the present application, the elastic diaphragm 25 is integrally formed and is made of elastic materials such as rubber, silicone, etc. Compared with the piston structure, the diaphragm can achieve a better waterproof effect, and the diaphragm will not rub against the inner wall of the water flow cavity of the water pump during the movement, which can avoid friction damage, reduce energy loss, and ensure the stability of the drive.

[0059] In the embodiment of the present application, the direction of the water outlet 241 is parallel to the motor output shaft 42, which can make the assembly structure more compact, thereby making the water pump structure more compact.

[0060] In the embodiment of the present application, the assembly position relationship between the water inlet valve member 23 and the water outlet valve member 24 is vertical assembly, and correspondingly, the water flow direction of the water inlet 231 and the water outlet 241 is vertical. Fig.11 In another embodiment of the present application, the assembly position relationship between the water inlet valve component 23 and the water outlet valve component 24 is parallel assembly, and the water flow directions of the water inlet 231 and the water outlet 241 are parallel. This structural design can adapt to more water flosser structures and can be specifically set according to needs, and this application does not limit it.

[0061] The water flosser provided in the present application is equipped with the above-mentioned water flosser pump body. The amount of liquid sprayed out by the water flosser pump body is uniform and the water flows out smoothly, which can better clean the oral cavity and bring a better user experience to the user.

[0062] The above is a preferred embodiment of the present application. It should be pointed out that for those skilled in the art, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. The pump body structure of the water flosser is characterized by: It includes a shell, a water pump assembly, a transmission mechanism, and a power assembly. The water pump assembly includes a pump body, a water inlet valve member, a water outlet valve member, and an elastic diaphragm. The water inlet valve member is provided with a water inlet, the water outlet valve member is provided with a water outlet, the water inlet valve member is also provided with a water inlet valve plate, the water outlet valve member is provided with a water outlet valve plate, and the water outlet valve plate is a duckbill valve plate. The pump body has a water flow cavity inside, the water inlet valve plate and the water flow cavity form a water inlet channel, and the water outlet valve plate and the water flow cavity form a water outlet channel; when the transmission mechanism rotates, it can drive the elastic diaphragm to deform repeatedly to cause the pressure in the water flow cavity to change, thereby realizing the liquid suction and liquid spraying process of the water irrigator, which is used for rinsing teeth. The elastic diaphragm is sealedly connected to the pump body, and the pump body comprises an upper pump body and a lower pump body. The two ends of the pump body connected to the elastic diaphragm have pump body end face chamfers. The upper pump body has a first drainage channel and a second drainage channel along the direction of the water outlet flow channel. The first drainage channel (211) extends in the direction of the water outlet flow channel (262), and the second drainage channel (212) extends in the direction of the water outlet flow channel (262). The elastic diaphragm comprises a deformation portion and a connection portion, wherein the connection portion is used to be connected and fixed to the pump body, and the deformation portion comprises a first deformation portion and a second deformation portion, one end of the first drainage channel (211) is connected to the second deformation portion (2512) of the elastic diaphragm (25), the other end of the first drainage channel (211) is connected to one end of the water inlet channel (261), one end of the second drainage channel (212) is connected to the water inlet channel (261), and the other end of the second drainage channel (212) is connected to one end of the water outlet channel (262), The thickness of the first deformation part of the elastic diaphragm is greater than that of the second deformation part, the length of the second deformation part is less than that of the first deformation part, and the hardness of the first deformation part is greater than that of the second deformation part. The top surface of the first deformation portion (2511) forms a convex surface, and the portion of the upper pump body that defines the second drainage channel (212) is formed as a curved surface, so that the height of the second drainage channel (212) in the reciprocating motion direction of the elastic diaphragm is smaller upstream of the water flow chamber (26) than downstream of the water flow chamber (26).

2. The water flosser pump structure according to claim 1, characterized in that: The elastic diaphragm is integrally formed and is made of elastic material.

3. The water flosser pump structure according to claim 1, characterized in that: The transmission mechanism comprises a gear transmission mechanism and a connecting rod. The gear transmission mechanism is connected to the connecting rod and is used to drive the connecting rod to move.

4. The water flosser pump structure according to claim 3, characterized in that: The connecting rod is connected to the elastic diaphragm through a connecting piece.

5. The water flosser pump structure according to claim 3, characterized in that: The gear transmission mechanism comprises a gear and an eccentric gear, the gear meshes and rotates with the eccentric gear, the eccentric gear further comprises an eccentric gear fixing shaft, and the eccentric gear fixing shaft is connected to the connecting rod.

6. The water flosser pump structure according to claim 3, characterized in that: When the gear transmission mechanism pulls the elastic diaphragm from the inside to the outside, the deformation part of the elastic diaphragm can be deformed toward the outside of the water flow cavity, so that the volume inside the water flow cavity increases, and the external water enters the water flow cavity from the water inlet through the water inlet valve plate.

7. The water flosser pump structure according to claim 3, characterized in that: When the gear transmission mechanism pushes the elastic diaphragm from outside to inside, the elastic diaphragm can be deformed toward the inside of the water flow cavity, so that the volume inside the water flow cavity is reduced, and the water in the water flow cavity is sprayed out from the water outlet through the water outlet valve plate.

8. The water flosser pump structure according to claim 6, characterized in that: The single water inlet volume of the water inlet is less than or equal to the maximum water inlet holding volume of the water flow cavity, and the water flow cavity is used to hold tooth flushing solution.

9. The water flosser pump structure according to claim 7 or 8, characterized in that: The water inlet valve plate and the water outlet valve plate are one-way valve plates, and the flow direction of the liquid through the valve plates is one-way flow.

10. The water flosser pump structure according to claim 1, characterized in that: The power assembly comprises a micro motor, and the micro motor is provided with a motor output shaft.

11. The water flosser pump structure according to claim 1, characterized in that: The upper pump body is connected with the water inlet valve member and the water outlet valve member, and sealing rings are arranged at the connection between the water inlet valve member, the water outlet valve member and the upper pump body.

12. The water flosser pump structure according to claim 11, characterized in that: The water inlet valve member is provided with a water inlet valve plate limiting groove, and the limiting groove limits the opening and closing angle of the water inlet valve plate.

13. The water flosser pump structure according to claim 2, characterized in that: The elastic diaphragm is made of rubber or silicone.

14. A water flosser, characterized in that: The oral irrigator comprises the oral irrigator pump body structure according to any one of claims 1 to 13.

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