Water pump mechanism and oral irrigator

Abstract

The utility model discloses a water pump mechanism and a water pick. The water pump mechanism comprises a pump shell, a water inlet and outlet assembly connected with the pump shell and a double-diaphragm valve. The double-diaphragm valve comprises a first diaphragm valve and a second diaphragm valve, and the first diaphragm valve and the second diaphragm valve are each provided with a through hole and a diaphragm. A first water inlet and a first water outlet are formed in the end face of the side, connected with the water inlet and outlet assembly, of the pump shell, and the water inlet and outlet assembly is provided with a second water outlet and a second water inlet. The second water inlet, the through hole of the first diaphragm valve and the first water inlet are sequentially communicated, and the diaphragm of the second diaphragm valve is positioned between the through hole of the first diaphragm valve and the first water inlet; the first water outlet, the through hole of the second diaphragm valve and the second water outlet are sequentially communicated, and the diaphragm of the first diaphragm valve is located between the through hole of the second diaphragm valve and the second water outlet. The double-diaphragm valve is arranged, and the opening and closing of the double-diaphragm valve are controlled by utilizing the pressure change of the pump cavity in the pump shell, so that the water inlet and outlet effect is achieved, and the sealing effect can be effectively guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of oral irrigators, and more particularly to a water pump mechanism and an oral irrigator. Background Technology

[0002] A water flosser is a device that uses the impact force of a jet of water under pressure to clean teeth. It typically works by repeatedly deforming a diaphragm inside a water pump to change the pressure inside the pump chamber, thus achieving water intake and spraying. A one-way valve is also included to ensure unidirectional water flow, preventing pressure loss that could result in insufficient spray force and affect cleaning effectiveness.

[0003] After prolonged use, the opening of the existing one-way valve is prone to damage and cannot be effectively closed, thus affecting the normal use of the oral irrigator. Utility Model Content

[0004] This invention addresses the technical problem of poor sealing performance in existing one-way valves by providing a water pump mechanism and a tooth-flushing device.

[0005] This utility model provides a water pump mechanism, which includes a pump housing, an inlet / outlet assembly connected to the pump housing, and a double diaphragm valve installed between the pump housing and the inlet / outlet assembly. The double diaphragm valve includes a first diaphragm valve and a second diaphragm valve, both of which have through holes and diaphragms. The end face of the pump housing connected to the inlet / outlet assembly has a first inlet and a first outlet. The inlet / outlet assembly has a second outlet and a second inlet. The second inlet, the through hole of the first diaphragm valve, and the first inlet are sequentially connected, and the diaphragm of the second diaphragm valve is located between the through hole of the first diaphragm valve and the first inlet. The first outlet, the through hole of the second diaphragm valve, and the second outlet are sequentially connected, and the diaphragm of the first diaphragm valve is located between the through hole of the second diaphragm valve and the second outlet.

[0006] Furthermore, a pump membrane end cap is connected to the end of the pump casing away from the water inlet and outlet components, and a pump membrane is also fixedly installed between the pump membrane end cap and the pump casing.

[0007] Furthermore, the pump diaphragm is provided with a fixing part along its circumference, the pump housing is provided with a receiving groove, and the fixing part is fixedly installed in the receiving groove by the pump diaphragm end cap.

[0008] Furthermore, the pump casing is provided with a first movable chamber at the first water inlet for unidirectional movement of the diaphragm of the second diaphragm valve; the water inlet / outlet assembly is provided with a second movable chamber at the second water outlet for unidirectional movement of the diaphragm of the first diaphragm valve.

[0009] Furthermore, a plunger for driving the pump diaphragm is provided on the side of the pump diaphragm away from the pump casing.

[0010] Furthermore, a sealing ring is provided between the pump casing and the water inlet / outlet assembly.

[0011] Furthermore, the water inlet and outlet assembly is provided with an inlet channel communicating with the second water inlet and an outlet channel communicating with the second water outlet.

[0012] On the other hand, this utility model also provides a dental flosser, including a housing, a water pump mechanism and a power component; the water pump mechanism and the power component are both installed inside the housing.

[0013] Furthermore, the power assembly includes a power component, a driving gear mounted on the output end of the power component, a driven gear connected to the driving gear, a gear shaft connected to the driven gear, and a connecting rod connected to the gear shaft; the other end of the connecting rod is connected to the plunger of the water pump mechanism.

[0014] Furthermore, the driven gear is provided with an eccentric boss, and the gear shaft is mounted on the eccentric boss.

[0015] The beneficial effects of this invention are as follows: When water needs to be introduced into the pump chamber, by reducing the pressure inside the pump chamber, under the action of external pressure, the diaphragm of the second diaphragm valve moves away from the through-hole of the first diaphragm valve and toward the pump casing. This allows external water to enter the pump chamber sequentially through the second inlet, the through-hole of the first diaphragm valve, and the first inlet. Simultaneously, under the action of external pressure, the diaphragm of the first diaphragm valve adheres tightly to the through-hole of the second diaphragm valve, facilitating the rapid entry of external water into the pump chamber. Conversely, when water is sprayed outwards from the pump chamber, by increasing the pressure inside the pump chamber, the pressure inside the pump chamber... Under the action of the first diaphragm valve, the diaphragm of the second diaphragm valve is tightly attached to the through hole of the first diaphragm valve, and the diaphragm of the first diaphragm valve moves away from the through hole of the second diaphragm valve toward the water inlet and outlet assembly. This allows the water in the pump chamber to be sprayed out after passing through the first outlet, the through hole of the second diaphragm valve, and the second outlet in sequence. This utility model uses the pressure change in the pump chamber inside the pump housing to control the opening and closing of the double diaphragm valve by setting up double diaphragm valves, thereby achieving the effect of water inlet and outlet, while also effectively ensuring the sealing effect. In addition, the surface of the double diaphragm valve is flat, which can reduce the requirements for the processing precision of plastic parts for sealing and make it easier to produce and process. Attached Figure Description

[0016] Figure 1 This is an exploded view of the water pump mechanism of this utility model.

[0017] Figure 2 This is a cross-sectional view of the water pump mechanism of this utility model in its natural state.

[0018] Figure 3 This is a cross-sectional view of the water pump mechanism of this utility model in the water immersion state.

[0019] Figure 4This is a cross-sectional view of the water pump mechanism of this utility model in the water outlet state.

[0020] Figure 5 This is a perspective view of the pump casing of the water pump mechanism of this utility model.

[0021] Figure 6 This is a perspective view of the diaphragm valve of the water pump mechanism of this utility model.

[0022] Figure 7 This is an exploded view of the oral irrigator of this utility model.

[0023] Reference numerals: 1. Pump mechanism; 11. Pump housing; 12. Inlet and outlet assembly; 13. Double diaphragm valve; 14. Pump diaphragm; 15. Pump diaphragm end cap; 16. Plunger; 17. Sealing ring; 21. Power component; 22. Drive gear; 23. Driven gear; 24. Eccentric boss; 25. Gear shaft; 26. Connecting rod; 31. Upper housing; 32. Lower housing; 111. First outlet; 112. First inlet; 113. First movable chamber; 114. Pump chamber; 121. Second movable chamber; 122. Outlet channel; 123. Inlet channel; 124. Second inlet; 125. First diaphragm valve; 131. Second diaphragm valve; 132. Through hole; 133. Diaphragm; 134. Fixing part; 141. Detailed Implementation

[0024] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0025] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0029] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0030] Example 1:

[0031] like Figures 1-6 As shown, this utility model provides a water pump mechanism 1, which includes a pump housing 11, an inlet / outlet assembly 12 connected to the pump housing 11, and a double diaphragm valve 13 installed between the pump housing 11 and the inlet / outlet assembly 12. The double diaphragm valve 13 includes a first diaphragm valve 131 and a second diaphragm valve 132, both of which are provided with through holes 133 and diaphragms 134. The end face of the pump housing 11 connected to the inlet / outlet assembly 12 is provided with a first inlet 112 and a first outlet 111. The inlet / outlet assembly 12 is provided with... The pump housing 11 has a second outlet 121 and a second inlet 125. The second inlet 125, the through hole 133 of the first diaphragm valve 131, and the first inlet 112 are sequentially connected, and the diaphragm 134 of the second diaphragm valve 132 is located between the through hole 133 of the first diaphragm valve 131 and the first inlet 112. The first outlet 111, the through hole 133 of the second diaphragm valve 132, and the second outlet 121 are sequentially connected, and the diaphragm 134 of the first diaphragm valve 131 is located between the through hole 133 of the second diaphragm valve 132 and the second outlet 121. Specifically, the pump housing 11 is provided with a pump chamber 114.

[0032] When water needs to be introduced into the pump chamber 114, this invention reduces the pressure inside the pump chamber 114. At this time, under the action of external pressure, the diaphragm 134 of the second diaphragm valve 132 moves away from the through-hole 133 of the first diaphragm valve 131 and towards the pump housing 11. This allows external water to sequentially enter the pump chamber 114 through the second inlet 125, the through-hole 133 of the first diaphragm valve 131, and the first inlet 112. Simultaneously, the diaphragm 134 of the first diaphragm valve 131, under the action of external pressure, adheres tightly to the through-hole 133 of the second diaphragm valve 132, facilitating the rapid entry of external water into the pump chamber 114. Conversely, when the pump chamber 114 sprays water outward, the pressure inside the pump chamber 114 is increased. At this time, the pressure inside the pump chamber 114... Under the action of force, the diaphragm 134 of the second diaphragm valve 132 is tightly attached to the through hole 133 of the first diaphragm valve 131, and the diaphragm 134 of the first diaphragm valve 131 moves away from the through hole 133 of the second diaphragm valve 132 toward the water inlet / outlet assembly 12, so that the water in the pump chamber 114 passes through the first outlet 111, the through hole 133 of the second diaphragm valve 132 and the second outlet 121 in sequence before being sprayed out. This utility model sets up double diaphragm valves 13 and uses the pressure change of the pump chamber 114 in the pump housing 11 to control the opening and closing of the double diaphragm valves 13, thereby achieving the effect of water inlet and outlet, while also effectively ensuring the sealing effect. In addition, the surface of the double diaphragm valve is flat, which can reduce the requirements for the processing precision of plastic parts for sealing and make production and processing easier.

[0033] Example 2:

[0034] The pump housing 11 is connected to a pump membrane end cap 15 at the end away from the water inlet / outlet assembly 12, and a pump membrane 14 is also fixedly installed between the pump membrane end cap 15 and the pump housing 11.

[0035] In this embodiment, a pump membrane 14 is provided, which can change the pressure inside the pump chamber 114 by squeezing or stretching the pump membrane 14, thereby adjusting the volume of the pump chamber 114 and realizing the functions of pumping water. The water pressure can be changed by adjusting the deformation speed of the pump membrane 14, thereby achieving the effect of water inlet and outlet. The pump membrane end cap 15 is provided to effectively fix the pump membrane 14 to the pump housing 11. The pump membrane 14 is an elastic membrane.

[0036] Example 3:

[0037] The pump diaphragm 14 is provided with a fixing part 141 along its circumference, and the pump housing 11 is provided with a receiving groove. The fixing part 141 is fixedly installed in the receiving groove by the pump diaphragm end cap 15.

[0038] In this embodiment, compared with traditional piston water pumps, the frequent movement of the pump diaphragm 14 can easily create gaps, which can easily cause wear and leakage of the water pump. This utility model, by setting a fixing part 141 and a receiving groove, and the pump diaphragm end cap 15 pressing the fixing part 141 into the receiving groove, can further fix and seal the pump diaphragm 14, realize the static fixation of the pump diaphragm 14, avoid gaps, and effectively provide sealing and service life.

[0039] Example 4:

[0040] The pump housing 11 is provided with a first movable chamber 113 at the first inlet 112 for unidirectional movement of the diaphragm 134 of the second diaphragm valve 132; the water inlet and outlet assembly 12 is provided with a second movable chamber 122 at the second outlet 121 for unidirectional movement of the diaphragm 134 of the first diaphragm valve 131.

[0041] In this embodiment, an active cavity is provided. By presetting the depth of the active cavity, the movement distance of the diaphragm 134 can be effectively controlled, thus preventing the diaphragm 134 from bending excessively.

[0042] Example 5:

[0043] The pump diaphragm 14 is also provided with a plunger 16 on the side away from the pump housing 11 for driving the pump diaphragm 14 to move.

[0044] In this embodiment, the other end of the plunger 16 is connected to the power assembly. The power assembly drives the plunger 16 to reciprocate, thereby causing the pump diaphragm 14 to be stretched or squeezed, so as to control the pressure of the pump chamber 114.

[0045] Example 6:

[0046] A sealing ring 17 is provided between the pump casing 11 and the water inlet / outlet assembly 12.

[0047] In this embodiment, the sealing ring 17 effectively provides the water pump with a tight seal and prevents water leakage.

[0048] Example 7:

[0049] The water inlet and outlet assembly 12 is provided with a water inlet channel 124 connected to the second water inlet 125 and a water outlet channel 123 connected to the second water outlet 121.

[0050] In this embodiment, a water inlet channel 124 is provided for easy connection to a water tank, while a water outlet channel 123 is provided for easy connection to a nozzle, thereby enabling water from the water tank to be sprayed out from the nozzle to achieve the effect of rinsing teeth.

[0051] Example 8:

[0052] like Figures 1-7As shown, this utility model also provides a dental flosser, including a housing, a water pump mechanism 1, and a power component; the water pump mechanism 1 and the power component are both installed inside the housing. The housing includes an upper housing 31 and a lower housing 32.

[0053] When water needs to be introduced into the pump chamber 114, this invention reduces the pressure inside the pump chamber 114. At this time, under the action of external pressure, the diaphragm 134 of the second diaphragm valve 132 moves away from the through-hole 133 of the first diaphragm valve 131 and towards the pump housing 11. This allows external water to sequentially enter the pump chamber 114 through the second inlet 125, the through-hole 133 of the first diaphragm valve 131, and the first inlet 112. Simultaneously, the diaphragm 134 of the first diaphragm valve 131, under the action of external pressure, adheres tightly to the through-hole 133 of the second diaphragm valve 132, facilitating the rapid entry of external water into the pump chamber 114. Conversely, when the pump chamber 114 sprays water outward, the pressure inside the pump chamber 114 is increased. At this time, the pressure inside the pump chamber 114... Under the action of force, the diaphragm 134 of the second diaphragm valve 132 is tightly attached to the through hole 133 of the first diaphragm valve 131, and the diaphragm 134 of the first diaphragm valve 131 moves away from the through hole 133 of the second diaphragm valve 132 toward the water inlet / outlet assembly 12, so that the water in the pump chamber 114 passes through the first outlet 111, the through hole 133 of the second diaphragm valve 132 and the second outlet 121 in sequence before being sprayed out. This utility model sets up double diaphragm valves 13 and uses the pressure change of the pump chamber 114 in the pump housing 11 to control the opening and closing of the double diaphragm valves 13, thereby achieving the effect of water inlet and outlet, while also effectively ensuring the sealing effect. In addition, the surface of the double diaphragm valve is flat, which can reduce the requirements for the processing precision of plastic parts for sealing and make production and processing easier.

[0054] Example 9:

[0055] The power assembly includes a power component 21, a driving gear 22 mounted on the output end of the power component 21, a driven gear 23 connected to the driving gear 22, a gear shaft 25 connected to the driven gear 23, and a connecting rod 26 connected to the gear shaft 25; the other end of the connecting rod 26 is connected to the plunger 16 of the water pump mechanism 1. Specifically, the driven gear 23 is provided with an eccentric boss 24, and the gear shaft 25 is mounted on the eccentric boss 24.

[0056] In this embodiment, the power component 21 drives the driving gear 22 to rotate. The driving gear 22 meshes with the driven gear 23, thereby driving the driven gear 23 to rotate. The driven gear 23 drives the gear shaft 25 to move through the eccentric boss 24. The gear shaft 25 drives the plunger 16 to reciprocate through the connecting rod 26, thereby driving the pump diaphragm 14 to squeeze or stretch through the plunger 16.

[0057] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "one example," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0058] The above description, in conjunction with specific embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present invention.

Claims

1. A water pumping mechanism characterized by: The water pump mechanism comprises a pump shell, a water inlet and outlet assembly connected with the pump shell, and a double diaphragm valve arranged between the pump shell and the water inlet and outlet assembly; the double diaphragm valve comprises a first diaphragm valve and a second diaphragm valve, and each of the first diaphragm valve and the second diaphragm valve is provided with a through hole and a diaphragm; an end surface of the side, where the pump shell is connected with the water inlet and outlet assembly, is provided with a first water inlet and a first water outlet, and the water inlet and outlet assembly is provided with a second water outlet and a second water inlet; the second water inlet, the through hole of the first diaphragm valve, and the first water inlet are sequentially communicated, and the diaphragm of the second diaphragm valve is located between the through hole of the first diaphragm valve and the first water inlet; the first water outlet, the through hole of the second diaphragm valve, and the second water outlet are sequentially communicated, and the diaphragm of the first diaphragm valve is located between the through hole of the second diaphragm valve and the second water outlet.

2. The water pumping mechanism of claim 1, wherein: The pump shell is connected with a pump membrane end cover at the end away from the water inlet and outlet assembly, and a pump membrane is fixedly installed between the pump membrane end cover and the pump shell.

3. The water pumping mechanism of claim 2, wherein: The pump membrane is provided with a fixing portion along the circumferential direction, the pump shell is provided with a receiving groove, and the fixing portion is fixedly installed in the receiving groove through the pump membrane end cover.

4. The water pumping mechanism of claim 1, wherein: The pump shell is provided with a first movable cavity for one-way movement of the diaphragm of the second diaphragm valve at the first water inlet, and the water inlet and outlet assembly is provided with a second movable cavity for one-way movement of the diaphragm of the first diaphragm valve at the second water outlet.

5. The water pump mechanism of claim 2, wherein: The side of the pump membrane away from the pump shell is further provided with a plunger for driving the pump membrane to move.

6. The water pumping mechanism of claim 1, wherein: A sealing ring is arranged between the pump shell and the water inlet and outlet assembly.

7. The water pumping mechanism of claim 1, wherein: The water inlet and outlet assembly is provided with a water inlet channel communicated with the second water inlet and a water outlet channel communicated with the second water outlet.

8. An oral irrigator characterized by: The water pump mechanism comprises a pump shell, a water inlet and outlet assembly connected with the pump shell, and a double diaphragm valve arranged between the pump shell and the water inlet and outlet assembly; the double diaphragm valve comprises a first diaphragm valve and a second diaphragm valve, and each of the first diaphragm valve and the second diaphragm valve is provided with a through hole and a diaphragm; an end surface of the side, where the pump shell is connected with the water inlet and outlet assembly, is provided with a first water inlet and a first water outlet, and the water inlet and outlet assembly is provided with a second water outlet and a second water inlet; the second water inlet, the through hole of the first diaphragm valve, and the first water inlet are sequentially communicated, and the diaphragm of the second diaphragm valve is located between the through hole of the first diaphragm valve and the first water inlet; the first water outlet, the through hole of the second diaphragm valve, and the second water outlet are sequentially communicated, and the diaphragm of the first diaphragm valve is located between the through hole of the second diaphragm valve and the second water outlet.

9. The oral irrigator of claim 8, wherein: The pump shell is connected with a pump membrane end cover at the end away from the water inlet and outlet assembly, and a pump membrane is fixedly installed between the pump membrane end cover and the pump shell.

10. The oral irrigator of claim 9, wherein: The pump membrane is provided with a fixing portion along the circumferential direction, the pump shell is provided with a receiving groove, and the fixing portion is fixedly installed in the receiving groove through the pump membrane end cover. The pump shell is provided with a first movable cavity for one-way movement of the diaphragm of the second diaphragm valve at the first water inlet, and the water inlet and outlet assembly is provided with a second movable cavity for one-way movement of the diaphragm of the first diaphragm valve at the second water outlet. The side of the pump membrane away from the pump shell is further provided with a plunger for driving the pump membrane to move. A sealing ring is arranged between the pump shell and the water inlet and outlet assembly. The water inlet and outlet assembly is provided with a water inlet channel communicated with the second water inlet and a water outlet channel communicated with the second water outlet. Including a shell, the water pump mechanism and the power assembly of any one of claims 1-7, and the water pump mechanism and the power assembly are both arranged in the shell. The power assembly comprises a power member, a driving gear arranged at the output end of the power member, a driven gear connected with the driving gear, a gear rotating shaft connected with the driven gear, and a connecting rod connected with the gear rotating shaft; the other end of the connecting rod is connected with the plunger of the water pump mechanism. The driven gear is provided with an eccentric boss, and the gear rotating shaft is installed in the eccentric boss.

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