A piston pump structure of a dental irrigator and a dental irrigator

Abstract

The present application provides a piston pump structure of a dental irrigator and a dental irrigator. The piston pump structure includes: a pump body, a piston assembly, and a first one-way valve; the piston assembly is slidably disposed in the pump body; wherein, the pump body includes a first chamber and a second chamber that communicate with each other; the piston assembly includes a piston and a water storage pipe; an end of the piston is slidably disposed in the first chamber; one end of the water storage pipe is connected to the end of the piston and is disposed in the first chamber, and the other end of the water storage pipe extends into the second chamber; the first chamber is provided with a water inlet; the second chamber is provided with a water outlet; the first one-way valve is disposed in the second chamber and abuts against the end of the water storage pipe extending into the second chamber. The present application has the functions of guiding, storing, and buffering liquid, which is beneficial to improving the stability of the water flow inside the pump body and avoiding damage to the piston pump structure due to excessive local pressure.

Description

Technical Field

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

[0002] An oral irrigator is a type of oral cleaning product, mainly including a piston pump, a water storage tank, and a nozzle. The piston pump extracts the liquid in the water storage tank and sprays it out through the nozzle to achieve the purpose of rinsing teeth.

[0003] Currently, the water outlet of the pump body of oral irrigators on the market generally adopts the design of a one-way valve disc, that is, a one-way valve disc with a diameter larger than the water outlet diameter is arranged outside the water outlet. When the piston moves from the bottom end of the pump body cavity towards the open end, the one-way valve disc abuts against the water outlet. When the piston moves from the open end of the pump body cavity towards the bottom end, the one-way valve disc opens, thereby ensuring the unidirectional flow of the liquid in the pump body cavity towards the outside of the pump body cavity.

[0004] However, the existing pump body structure of oral irrigators is prone to causing unstable water flow inside the pump body, resulting in too high local pressure inside the pump body and prone to pump body damage. Summary of the Invention

[0005] In view of the above problems, the present application is proposed to provide a piston pump structure of an oral irrigator and an oral irrigator that can overcome or at least partially solve the above problems, including:

[0006] A piston pump structure of an oral irrigator, including: a pump body, a piston assembly, and a first one-way valve;

[0007] The piston assembly is slidably arranged in the pump body; wherein, the pump body includes a first chamber and a second chamber that are communicated with each other; the piston assembly includes a piston and a water storage pipe; the end of the piston is slidably arranged in the first chamber; one end of the water storage pipe is connected to the end of the piston and is arranged in the first chamber, and the other end of the water storage pipe extends into the second chamber;

[0008] The first chamber is provided with a water inlet; the second chamber is provided with a water outlet; the first one-way valve is arranged in the second chamber and abuts against the end of the water storage pipe extending into the second chamber;

[0009] When the pump body is in the water absorption state, the water storage pipe moves away from the second chamber under the drive of the piston, and external liquid flows into the first chamber through the water inlet and into the second chamber through the water storage pipe;

[0010] When the pump body is in the drainage state, the water storage pipe moves towards the direction close to the second chamber under the drive of the piston. The liquid inside the first chamber flows into the second chamber through the water storage pipe and flows outwards through the water outlet.

[0011] Preferably, the piston assembly further includes a connecting pipe; the connecting pipe is arranged inside the first chamber; one end of the connecting pipe is connected to the end of the water storage pipe arranged in the first chamber, and the other end is connected to the end of the piston; water flow holes are arranged on the side of the connecting pipe.

[0012] Preferably, the pump body further includes a guide ring; the guide ring is arranged between the first chamber and the second chamber; the water storage pipe is slidably arranged inside the guide ring.

[0013] Preferably, the pump body further includes a first sealing ring; the first sealing ring is arranged between the first chamber and the second chamber; the water storage pipe is slidably arranged inside the first sealing ring.

[0014] Preferably, the first one-way valve includes a first spring and a first sealing plug connected to the end of the first spring; the end of the first spring away from the first sealing plug is fixed inside the second chamber; the first sealing plug abuts against the end of the water storage pipe extending into the second chamber.

[0015] Preferably, a second one-way valve is further included; the second one-way valve includes a second spring and a second sealing plug connected to the end of the second spring; the end of the second spring away from the second sealing plug is fixed on the side of the water outlet; the second sealing plug abuts against the water outlet.

[0016] Preferably, the pump body further includes an assembly ring; the assembly ring is sleeved outside the connection part of the first chamber and the second chamber.

[0017] Preferably, the pump body further includes a second sealing ring and a third sealing ring; the second sealing ring is arranged at the connection part of the assembly ring and the first chamber; the third sealing ring is arranged at the connection part of the assembly ring and the second chamber.

[0018] Preferably, the piston assembly further includes a rotating motor, a motor gear, a transmission gear, an eccentric wheel and a connecting rod; the motor gear is fixed on the rotating shaft of the rotating motor; the transmission gear is meshed and connected with the motor gear; the eccentric wheel is arranged on the end face of the transmission gear and is not coaxially arranged with the transmission gear; one end of the connecting rod is sleeved outside the eccentric wheel, and the other end is connected to the end of the piston.

[0019] A dental irrigator, comprising a housing, a nozzle, a water tank, a power supply assembly and the piston pump structure as described in any one of the above; the power supply assembly and the piston pump structure are respectively installed inside the housing; the power supply assembly is electrically connected to the piston assembly; the nozzle and the water tank are respectively connected to the surface of the housing; the water outlet is connected to the nozzle; the water inlet is connected to the water tank.

[0020] The present application has the following advantages:

[0021] In an embodiment of the present application, through a pump body, a piston assembly and a first one-way valve; the piston assembly is slidably disposed inside the pump body; wherein, the pump body includes a first chamber and a second chamber that communicate with each other; the piston assembly includes a piston and a water storage pipe; an end of the piston is slidably disposed inside the first chamber; one end of the water storage pipe is connected to the end of the piston and disposed inside the first chamber, and the other end of the water storage pipe extends into the second chamber; the first chamber is provided with a water inlet; the second chamber is provided with a water outlet; the first one-way valve is disposed inside the second chamber and abuts against the end of the water storage pipe extending into the second chamber; when the pump body is in a water absorption state, the water storage pipe moves away from the second chamber under the drive of the piston, and external liquid flows into the first chamber through the water inlet and into the second chamber through the water storage pipe; when the pump body is in a water drainage state, the water storage pipe moves towards the second chamber under the drive of the piston, the liquid inside the first chamber flows into the second chamber through the water storage pipe and flows outwards through the water outlet, and the pump body, the water storage pipe and the first one-way valve cooperate with each other to have the functions of guiding, storing and buffering liquid, which is beneficial to improving the stability of the water flow inside the pump body and avoiding the situation that the piston pump structure is damaged due to excessive local pressure. Description of the Drawings

[0022] In order to more clearly illustrate the technical solutions of the present application, the drawings required to be used in the description of the present application will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0023] Figure 1 is a schematic structural diagram of a piston pump structure of a dental irrigator provided by an embodiment of the present application;

[0024] Figure 2 is a schematic structural diagram of a piston pump structure of a dental irrigator provided by an embodiment of the present application in a water absorption state;

[0025] Figure 3It is a schematic structural diagram of a piston pump structure of a water flosser provided by an embodiment of the present application in the drainage state.

[0026] The reference numerals in the accompanying drawings of the specification are as follows:

[0027] 100, pump body; 110, first chamber; 111, water inlet; 120, second chamber; 121, water outlet; 130, guide ring; 140, first sealing ring; 150, assembly ring; 160, second sealing ring; 170, third sealing ring; 200, piston assembly; 210, piston; 220, water storage pipe; 230, connecting pipe; 240, rotating motor; 250, motor gear; 260, transmission gear; 270, eccentric wheel; 280, connecting rod; 300, first one-way valve; 400, second one-way valve. Detailed implementation manners

[0028] To make the objects, features, and advantages of the present application more obvious and understandable, the present application will be further described in detail below with reference to the accompanying drawings and specific implementation manners. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the protection scope of the present application.

[0029] Referring to Figures 1-3 , there is shown a piston pump structure of a water flosser provided by an embodiment of the present application, including: a pump body 100, a piston assembly 200, and a first one-way valve 300;

[0030] The piston assembly 200 is slidably disposed in the pump body 100; wherein, the pump body 100 includes a first chamber 110 and a second chamber 120 that communicate with each other; the piston assembly 200 includes a piston 210 and a water storage pipe 220; the end of the piston 210 is slidably disposed in the first chamber 110; one end of the water storage pipe 220 is connected to the end of the piston 210 and disposed in the first chamber 110, and the other end of the water storage pipe 220 extends into the second chamber 120;

[0031] The first chamber 110 is provided with a water inlet 111; the second chamber 120 is provided with a water outlet 121; the first one-way valve 300 is disposed in the second chamber 120 and abuts against the end of the water storage pipe 220 extending into the second chamber 120;

[0032] When the pump body 100 is in the water absorption state, the water storage pipe 220 moves away from the second chamber 120 under the drive of the piston 210, and external liquid flows into the first chamber 110 through the water inlet 111 and into the second chamber 120 through the water storage pipe 220;

[0033] When the pump body 100 is in the drainage state, the water storage pipe 220 moves towards the direction close to the second chamber 120 driven by the piston 210, and the liquid inside the first chamber 110 flows into the second chamber 120 through the water storage pipe 220 and flows outwards through the water outlet 121.

[0034] In the embodiment of the present application, through the pump body 100, the piston assembly 200 and the first one-way valve 300; the piston assembly 200 is slidably arranged inside the pump body 100; wherein, the pump body 100 includes a first chamber 110 and a second chamber 120 which are communicated with each other; the piston assembly 200 includes a piston 210 and a water storage pipe 220; the end of the piston 210 is slidably arranged inside the first chamber 110; one end of the water storage pipe 220 is connected to the end of the piston 210 and arranged inside the first chamber 110, and the other end of the water storage pipe 220 extends into the second chamber 120; the first chamber 110 is provided with a water inlet 111; the second chamber 120 is provided with a water outlet 121; the first one-way valve 300 is arranged inside the second chamber 120 and abuts against the end of the water storage pipe 220 extending into the second chamber 120; when the pump body 100 is in the water absorption state, the water storage pipe 220 moves towards the direction away from the second chamber 120 driven by the piston 210, and external liquid flows into the first chamber 110 through the water inlet 111 and flows into the second chamber 120 through the water storage pipe 220; when the pump body 100 is in the drainage state, the water storage pipe 220 moves towards the direction close to the second chamber 120 driven by the piston 210, and the liquid inside the first chamber 110 flows into the second chamber 120 through the water storage pipe 220 and flows outwards through the water outlet 121. The pump body 100, the water storage pipe 220 and the first one-way valve 300 cooperate with each other, having the functions of guiding, storing and buffering the liquid, which is beneficial to improving the stability of the water flow inside the pump body 100 and avoiding the situation that the piston pump structure is damaged due to excessive local pressure.

[0035] Next, a piston pump structure of a dental irrigator in the present exemplary embodiment will be further described.

[0036] In this embodiment, the piston assembly 200 further includes a connecting pipe 230; the connecting pipe 230 is disposed in the first chamber 110; one end of the connecting pipe 230 is connected to the end of the water storage pipe 220 disposed in the first chamber 110, and the other end is connected to the end of the piston 210; water flow holes are provided on the side of the connecting pipe 230. Specifically, the connecting pipe 230 is a tee pipe, and a first through hole is provided at the end thereof connected to the water storage pipe 220, and the water flow holes are respectively provided on the tube walls on its opposite sides. The liquid inside the first chamber 110 flows into the connecting pipe 230 through the water flow holes and into the water storage pipe 220 through the first through hole.

[0037] In this embodiment, the pump body 100 further includes a guide ring 130; the guide ring 130 is disposed between the first chamber 110 and the second chamber 120; the water storage pipe 220 is slidably disposed inside the guide ring 130. The guide ring 130 has the function of guiding the water storage pipe 220, which is beneficial to improving the stability of the water storage pipe 220 during movement.

[0038] In this embodiment, the pump body 100 further includes a first sealing ring 140; the first sealing ring 140 is disposed between the first chamber 110 and the second chamber 120; the water storage pipe 220 is slidably disposed inside the first sealing ring 140. Specifically, the first sealing ring 140 is disposed at the connection between the guide ring 130 and the second chamber 120; the guide ring 130 is in interference connection with the water storage pipe 220, which can prevent the liquid inside the first chamber 110 from flowing into the second chamber 120 through the gap between the water storage pipe 220 and the guide ring 130.

[0039] In this embodiment, the first one-way valve 300 includes a first spring and a first sealing plug connected to the end of the first spring; the end of the first spring away from the first sealing plug is fixed in the second chamber 120; the first sealing plug abuts against the end of the water storage pipe 220 extending into the second chamber 120. Specifically, the end of the first spring away from the first sealing plug is fixed at the end of the second chamber 120 away from the first chamber 110; the first spring is a helical spring capable of bearing axial tension; the material of the first sealing plug is rubber or plastic, which has good elastic deformation performance.

[0040] In this embodiment, a second one-way valve 400 is further included; the second one-way valve 400 includes a second spring and a second sealing plug connected to the end of the second spring; the end of the second spring away from the second sealing plug is fixed to the side of the water outlet 121; the second sealing plug abuts against the water outlet 121. Specifically, the second spring is a helical spring capable of withstanding axial tension; the material of the second sealing plug is rubber or plastic, which has good elastic deformation performance.

[0041] In this embodiment, the pump body 100 further includes an assembly ring 150; the assembly ring 150 is sleeved outside the connection of the first chamber 110 and the second chamber 120. The first chamber 110 and the second chamber 120 adopt a split design and are fixedly connected through the assembly ring 150, so that the pump body 100 is simple to process and easy to assemble.

[0042] In this embodiment, the pump body 100 further includes a second sealing ring 160 and a third sealing ring 170; the second sealing ring 160 is arranged at the connection of the assembly ring 150 and the first chamber 110; the third sealing ring 170 is arranged at the connection of the assembly ring 150 and the second chamber 120. The second sealing ring 160 can improve the connection stability between the assembly ring 150 and the first chamber 110, and the third sealing ring 170 can improve the connection stability between the assembly ring 150 and the second chamber 120.

[0043] In this embodiment, the piston assembly 200 further includes a rotating motor 240, a motor gear 250, a transmission gear 260, an eccentric wheel 270 and a connecting rod 280; the motor gear 250 is fixed on the rotating shaft of the rotating motor 240; the transmission gear 260 is meshed and connected with the motor gear 250; the eccentric wheel 270 is arranged on the end face of the transmission gear 260 and is not coaxially arranged with the transmission gear 260; one end of the connecting rod 280 is sleeved outside the eccentric wheel 270, and the other end is connected to the end of the piston 210. When the motor gear 250 rotates driven by the rotating motor 240, the transmission gear 260 rotates driven by the motor gear 250, the eccentric wheel 270 makes a circular motion around the central axis of the transmission gear 260, the connecting rod 280 swings driven by the eccentric wheel 270, and the piston 210 reciprocates axially along the first chamber 110 driven by the connecting rod 280.

[0044] The working principle of this application is as follows:

[0045] When the piston 210 moves away from the second chamber 120, due to the vacuum effect in the first chamber 110, external liquid flows into the first chamber 110 and the water storage pipe 220 through the water inlet 111;

[0046] When the piston 210 approaches the end of the first chamber 110 away from the second chamber 120, the first one-way valve 300 is in a relatively loose fit state, and a part of the liquid flows into the second chamber 120 for storage due to convection and impact;

[0047] When the piston 210 moves towards the second chamber 120, due to the push of the water storage pipe 220, the liquid inside the second chamber 120 impacts the second one-way valve 400 and flows outwards.

[0048] In an embodiment of the present application, there is also provided a dental irrigator, including a housing, a nozzle, a water tank, a power supply assembly, and the piston pump structure as described in any one of the above; the power supply assembly and the piston pump structure are respectively installed inside the housing; the power supply assembly is electrically connected to the piston assembly 200; the nozzle and the water tank are respectively connected to the surface of the housing; the water outlet 121 is connected to the nozzle; the water inlet 111 is connected to the water tank.

[0049] Although the preferred embodiments of the embodiments of the present application have been described, those skilled in the art can make additional changes and modifications once they know the basic creative concept. Therefore, the appended claims are intended to be construed to include the preferred embodiments as well as all changes and modifications falling within the scope of the embodiments of the present application.

[0050] Finally, it should also be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or terminal device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or terminal device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or terminal device including the element.

[0051] The above has introduced in detail the piston pump structure of a water flosser and the water flosser provided by the present application. Specific examples are used in this article to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the method and its core idea of the present application; at the same time, for those of ordinary skill in the art, according to the idea of the present application, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present application.

Claims

1. The piston pump structure of a dental irrigator, characterized in that, Comprising: A pump body, a piston assembly, and a first one-way valve; The piston assembly is slidably disposed within the pump body; wherein, the pump body includes a first chamber and a second chamber that communicate with each other; the piston assembly includes a piston and a water storage pipe; an end of the piston is slidably disposed within the first chamber; one end of the water storage pipe is connected to the end of the piston and is disposed within the first chamber, and the other end of the water storage pipe extends into the second chamber; the piston assembly further includes a connecting pipe; the connecting pipe is disposed within the first chamber; one end of the connecting pipe is connected to the end of the water storage pipe disposed within the first chamber, and the other end is connected to the end of the piston; water flow holes are provided on the side of the connecting pipe. The first chamber is provided with a water inlet; the second chamber is provided with a water outlet; the first one-way valve is disposed within the second chamber and abuts against the end of the water storage pipe that extends into the second chamber. It further includes a second one-way valve; the second one-way valve includes a second spring and a second sealing plug connected to the end of the second spring; the end of the second spring away from the second sealing plug is fixed to the side of the water outlet; the second sealing plug abuts against the water outlet. When the pump body is in the water absorption state, the water storage pipe moves away from the second chamber under the drive of the piston, and external liquid flows into the first chamber through the water inlet and into the second chamber through the water storage pipe. When the pump body is in the drainage state, the water storage pipe moves towards the second chamber under the drive of the piston, and the liquid inside the first chamber flows into the second chamber through the water storage pipe and flows outwards through the water outlet.

2. The piston pump structure according to claim 1, characterized in that, The pump body further includes a guide ring; the guide ring is disposed between the first chamber and the second chamber; the water storage pipe is slidably disposed inside the guide ring.

3. The piston pump structure according to claim 1, characterized in that, The pump body further includes a first sealing ring; the first sealing ring is disposed between the first chamber and the second chamber; the water storage pipe is slidably disposed inside the first sealing ring.

4. The piston pump structure according to claim 1, characterized in that, The first one-way valve includes a first spring and a first sealing plug connected to the end of the first spring; the end of the first spring away from the first sealing plug is fixed within the second chamber; the first sealing plug abuts against the end of the water storage pipe that extends into the second chamber.

5. The piston pump structure according to claim 1, characterized in that, The pump body further includes a fitting ring; the fitting ring is sleeved outside the connection part of the first chamber and the second chamber.

6. The piston pump structure according to claim 5, characterized in that, The pump body further includes a second sealing ring and a third sealing ring; the second sealing ring is disposed at the connection part of the fitting ring and the first chamber; the third sealing ring is disposed at the connection part of the fitting ring and the second chamber.

7. The piston pump structure according to claim 1, characterized in that, The piston assembly further includes a rotating motor, a motor gear, a transmission gear, an eccentric wheel, and a connecting rod; the motor gear is fixed on the rotating shaft of the rotating motor; the transmission gear is meshed and connected with the motor gear; the eccentric wheel is disposed on the end face of the transmission gear and is not coaxially arranged with the transmission gear; one end of the connecting rod is sleeved outside the eccentric wheel, and the other end is connected to the end of the piston.

8. A dental irrigator, characterized in that, It includes a housing, a nozzle, a water tank, a power supply assembly and a piston pump structure as described in any one of claims 1-7; the power supply assembly and the piston pump structure are respectively installed inside the housing; the power supply assembly is electrically connected to the piston assembly; the nozzle and the water tank are respectively connected to the surface of the housing; the water outlet is connected to the nozzle; and the water inlet is connected to the water tank.

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