CN214660801U - Water pump of tooth flushing device and tooth flushing device - Google Patents

Abstract

The utility model relates to a water pump of a tooth flushing device, which comprises a pump shell and a metal sleeve; the pump shell is provided with a cavity, a water outlet hole and a water inlet hole which are communicated with the cavity, the inner wall of the cavity is provided with at least one contact area, and the first connecting part is positioned in the contact area; the metal sleeve is positioned in the cavity, the piston reciprocates in the metal sleeve, and the outer wall of the metal sleeve comprises at least one second connecting part which is in physical contact fit with the first connecting part in the cavity. Through the second connecting portion at the metal sleeve outer wall and the cooperation of the first connecting portion physical contact of pump case inner wall, increase the connection steadiness of second connecting portion and first connecting portion, the frictional force of reinforcing metal sleeve and pump case avoids metal sleeve to drop from the pump case, improves sealing performance, extension tooth ware life towards.

Description

Water pump of tooth flushing device and tooth flushing device

Technical Field

The utility model belongs to the field of oral cleaning appliances, and relates to a water pump of a tooth flushing device.

Background

The tooth flushing device is a household oral cavity cleaning device, and the main principle is that the pulse water flow is utilized to remove dental plaque and food remained below a gum line. The electric tooth flushing device in the market generally drives a piston type reciprocating water pump through a motor, the force of high-speed rotation of the motor drives an eccentric device to push a piston to reciprocate up and down, and the opening and closing actions of a water inlet valve and a water outlet valve are realized, so that a pump body sucks and sprays high-pressure water flow, and the effect of cleaning teeth and tooth gaps is achieved.

In the correlation technique, the pump case and the piston of water pump are mostly made of plastics, and pump case and piston move at the during operation high speed, and two plastic parts friction is great, and wearing and tearing are very fast to influence the sealing performance and the life of product, for reducing wearing and tearing, the water pump inner wall in piston stroke range sets up to the metal material and is an effectual mode.

The utility model discloses a tooth ware towards like chinese utility model of publication No. CN204971669U, the material of disclosing the second cavity inner wall is the metal, leakproofness and smoothness are better, make towards tooth ware more stable, it is the water pump of secondary injection moulding formation area metal inner wall in putting into the mould with the metal sleeve of second cavity, because pump case and metal sleeve are different materials, and the metal sleeve surface is smooth, metal sleeve drops from the pump case easily, still seep water easily between the two, the leakproofness is not good enough, influence the sealing performance and the life of product.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects and deficiencies in the prior art, the utility model aims to provide a water pump of a tooth flushing device, which has better sealing performance.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the technical proposal of the utility model is a water pump of a tooth flushing device, which comprises a pump shell and a metal sleeve;

the pump shell is provided with a cavity, a water outlet hole and a water inlet hole which are communicated with the cavity, the inner wall of the cavity is provided with at least one contact area, and the first connecting part is positioned in the contact area;

the metal sleeve is positioned in the cavity, the piston reciprocates in the metal sleeve, and the outer wall of the metal sleeve comprises at least one second connecting part which is in physical contact fit with the first connecting part in the cavity.

The technical effect of this technical scheme is, through the cooperation of the second connecting portion at the metal sleeve outer wall and the first connecting portion physical contact of pump case inner wall, increase the connection steadiness of second connecting portion and first connecting portion, the frictional force of reinforcing metal sleeve and pump case avoids metal sleeve to drop from the pump case, improves sealing performance, and the extension is towards tooth ware life.

In a preferred example of this technical scheme, the both ends opening part of metal sleeve inner wall has the fillet, or the both ends opening part of metal sleeve inner wall has fillet and chamfer, and the mould core is scraped the flower when can effectively avoiding moulding plastics, and the installation Y shape sealing washer avoids scraping the sealing washer. The two ends of the inner wall of the metal sleeve are provided with openings which are chamfered to form mounting inclined planes, so that the Y-shaped sealing ring is convenient to mount, and the mounting efficiency is improved.

In a preferred example of the technical solution, the piston is connected with the piston rod, a waterproof sealing member is connected between the piston rod and the pump shell, the waterproof sealing member is further provided with a water outlet, a drainage connecting member is mounted on the waterproof drainage member and is communicated with the water outlet, and the drainage connecting member is further connected with a drainage pipe, so that water leaking from the inside of the waterproof sealing member can be drained to the outside of the water tank or the tooth flushing device.

In a preferred example of this solution, the second connection portion of the metal sleeve includes a first recess, and the first connection portion of the chamber is a first projection fitted in the first recess.

In a preferred example of this aspect, the metal sleeve is cylindrical, and the first groove is an annular groove in a circumferential direction of the metal sleeve. The quantity of first recess is 2, and two first recess symmetry settings.

The first connecting portion can be protruding, and the second connecting portion is the recess, or first connecting portion is the recess, and the second connecting portion is protruding, increases the connection steadiness of second connecting portion and first connecting portion, strengthens the frictional force of metal sleeve and pump case, avoids metal sleeve to drop from the pump case.

In a preferred example of the technical solution, the metal sleeve is cylindrical, and the first groove is a groove along a length direction of the metal sleeve. The quantity of first recess is 2, and two first recess symmetry settings.

In a preferred example of this technical solution, the metal sleeve is cylindrical, the first groove is a groove on the outer side wall of the metal sleeve, and the first grooves are a plurality of and evenly distributed.

In a preferred example of this solution, the second connection portion of the metal sleeve comprises at least one second protrusion extending from the second connection portion, the first connection portion of the chamber is provided with a second recess, and the second protrusion of the metal sleeve cooperates with the second recess.

In a preferred example of this solution, one of the second connection of the metal sleeve and the first connection of the chamber comprises at least one roughened area, the other being in physical contact with the roughened area. The first connecting portion is provided with a rough area, or the second connecting portion is provided with a rough area, or both the first connecting portion and the second connecting portion can be rough areas. The connection steadiness of second connecting portion and first connecting portion can be increased, the frictional force of reinforcing metal sleeve and pump case avoids metal sleeve to drop from the pump case.

In a preferred example of this solution, the inner wall of the metal sleeve is mirror-finished. And the inner wall of the metal sleeve is subjected to mirror surface polishing, so that the friction between the piston and the inner wall of the steel pipe is reduced, and the energy utilization rate is improved.

Drawings

The foregoing and other objects, features and advantages of the application will be apparent from the following more particular descriptions of exemplary embodiments of the application, as illustrated in the accompanying drawings wherein like reference numbers generally represent like parts throughout the exemplary embodiments of the application.

Fig. 1 is a schematic structural view of a tooth irrigator according to an embodiment of the present application.

Fig. 2 is a schematic structural diagram of the tooth irrigator according to the embodiment of the application.

Fig. 3 is a schematic structural view of the tooth irrigator in fig. 2 cut along A-A.

Fig. 4 is an enlarged view of the structure of the portion B in fig. 3.

Fig. 5 is an enlarged view of the structure of the portion C in fig. 3.

Fig. 6 is a schematic structural view of a metal sleeve according to an embodiment of the present application.

Fig. 7 is a schematic structural view of a metal sleeve shown in an embodiment of the present application after being cut.

Fig. 8 is another structural schematic diagram of the metal sleeve according to the embodiment of the present application.

Fig. 9 is an exploded schematic view of a structure of a water tank according to an embodiment of the present application.

Fig. 10 is an exploded view of a part of the structure of the tooth irrigator according to the embodiment of the present application.

Fig. 11 is a schematic structural diagram of an adapter according to an embodiment of the present application.

Fig. 12 is a schematic structural view of a cross-section of an adapter according to an embodiment of the present invention.

Detailed Description

Preferred embodiments of the present application will be described in more detail below with reference to the accompanying drawings. While the preferred embodiments of the present application are shown in the drawings, it should be understood that the present application may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

It should be understood that although the terms "first," "second," "third," etc. may be used herein to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present application. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present application, it is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be considered limiting of the present application.

Unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are intended to be inclusive and mean that, for example, they may be fixedly connected or detachably connected or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

Referring to fig. 1 to 12, the present embodiment is a tooth rinsing device, which includes a tooth rinsing device main body and a water tank 2, wherein a nozzle 1 is disposed at an upper end of the tooth rinsing device main body, the nozzle 1 is used for spraying cleaning water to clean an oral cavity, the nozzle is detachably connected to a water outlet end cover 11 of the tooth rinsing device main body, and an installation structure of the nozzle 1 is the prior art, which will not be described in more detail.

The water tank 2 is detachably mounted on one side of the tooth flusher body below the nozzle, and the shape of the water tank can be adjusted according to the hand feeling of holding. The punch main body is provided with a switch key 31, a mode selection key 32 and a state indication display part 33, the switch key and the mode selection key can also be set as a function control key and have the functions of starting and closing the tooth flushing device and selecting the mode, the function control key can be a mechanical control key or a touch switch, and the state display part can be an indicator light or a display screen.

The tooth flusher body is also provided with a shell 4, a power supply part, a control part, a driving part and a water pump. The power supply part comprises a rechargeable battery 5, the control part comprises a circuit board 3 and a control panel, the control panel comprises a switch key 31, a mode selection key 32 and a state indication display part 33, and the driving part comprises a motor 61, a face gear 62 and an eccentric wheel 63 arranged on the face gear.

The water pump comprises a pump shell 71, a piston 73, a piston rod 74, a water inlet connecting piece 75 and a water outlet connecting piece 76, the water pump can be a piston type reciprocating pump, the pump shell is provided with a cavity 711, a metal sleeve 72 is arranged in the cavity 711, and the inner wall of the cavity, which is contacted with the piston, is made of metal.

The circuit board 3 is connected with the function control key, the rechargeable battery 5 and the motor 61, the output shaft of the motor is connected with the face gear 62 in a transmission way, the rotating axis of the motor 61 and the rotating axis of the face gear are respectively positioned on two orthogonal planes, the face gear is provided with an eccentric wheel 63, the lower end of the piston rod 74 is provided with a shaft sleeve 741, the eccentric wheel is inserted into the shaft sleeve, and the shaft sleeve is provided with a hole 742 for the rotating shaft of the face gear to penetrate out.

The upper end of the piston rod 74 is provided with a piston 73, the piston is arranged in the metal sleeve 72 to do reciprocating motion, the piston and the inner wall of the metal sleeve can be in close fit through a Y-shaped sealing ring 731, the side wall of the piston is attached to the inner wall of the metal sleeve as much as possible to ensure that liquid does not leak in the motion process of the piston, the inner wall of the metal sleeve is mirror-polished, preferably Ra0.005, friction between the piston and the inner wall of the steel pipe is reduced, the energy utilization rate is improved, and resistance of the piston in the reciprocating motion process can be reduced.

In order to ensure the swinging freedom degree of the piston rod, the lower end of the pump shell 71 is an opening structure, the opening structure is communicated with the cavity 711, a sealing waterproof piece 77 is connected between the piston rod and the opening structure of the pump shell, a water outlet 771 is further arranged on the sealing waterproof piece, a water drainage connecting piece 78 is arranged on the sealing waterproof piece and is communicated with the water outlet, the water drainage connecting piece is further connected with a water drainage pipe 79, the water drainage pipe 79 is communicated to the outside of the tooth flusher or the water tank, and the water drainage pipe can drain the water leaking from the inside of the water pump to the outside of the water tank or the body of the tooth flusher.

When the motor runs, the motor drives the face gear to rotate, the face gear drives the eccentric wheel to rotate, therefore, the piston rod movably sleeved on the eccentric wheel drives the piston to realize reciprocating motion, the sliding stroke of the piston is 2 times of the distance between the eccentric wheel and the axis of the face gear, and therefore the position of the eccentric wheel can be adjusted according to actual requirements, and the sliding stroke of the piston and the reciprocating reversing frequency are adjusted.

In order to improve the stability of the connection between the metal sleeve and the pump casing and the sealing performance between the metal sleeve and the pump casing, the chamber of the pump casing 71 is further provided with a water outlet 712 and a water inlet 713, the water outlet is communicated with the water outlet connector 76, the water inlet is communicated with the water inlet connector 75, the inner wall of the chamber is provided with one or more contact areas, and the first connecting part 714 is positioned in the contact areas; the metal sleeve 72 is positioned in the chamber and the metal sleeve outer wall includes one or more second connections 721, the one or more second connections 721 being in physical contact with the first connections 714 of the first chamber when the metal sleeve is positioned fixed in the chamber. In actual manufacturing, the molded metal sleeve is placed in a mold, and then the pump casing 71 with the metal sleeve is formed by injection molding, so that the metal sleeve 72 is positioned and fixed in the cavity.

Specifically, as an example, the second connection portion 721 of the metal sleeve is a first groove, and the first connection portion 714 of the chamber is configured as a first protrusion fitted in the first groove. The metal sleeve is cylindrical, the first groove is an annular groove along the circumferential direction of the metal sleeve, and the first groove can also be a groove along the length direction of the metal sleeve.

First recess quantity is 2, and two first recess symmetries set up, when setting up the pump case of water pump and metal sleeve secondary injection moulding like this, fixes metal sleeve on the mould more easily.

As another example, the metal sleeve is cylindrical, the first grooves may also be grooves on the outer side wall of the metal sleeve, and the first grooves are distributed uniformly.

As another example, in order to improve the stability of the connection of the metal sleeve to the pump casing and the sealing between the two, it is also possible that the second connection portion of the metal sleeve comprises at least one second protrusion extending from the second connection portion, the first connection portion of the chamber comprises a second recess, and the protrusion of the metal sleeve cooperates with the second recess.

Other alternatives are also possible, such as the second connection portion of the metal sleeve comprising at least one roughened area, the first connection portion of the first chamber making said physical contact with the roughened portion. Alternatively, the first connection portion of the first chamber comprises at least one roughened region, and the second connection portion of the metal sleeve is in physical contact with the roughened region. Alternatively, the first connection portion and the second connection portion are both rough regions.

The openings at both ends of the inner wall of the metal sleeve 72 are provided with rounded corners or chamfered angles. Two openings of the metal sleeve are chamfered and filleted, so that the mold core can be effectively protected from scratching during injection molding, and the Y-shaped sealing ring 731 is mounted safely and reliably to avoid scratching and improve mounting efficiency.

The housing 4 is provided with a first chamber 41 and a second chamber 42, wherein the water pump, the power supply part and the driving part are all located in the first chamber 41, the housing is further provided with a bottom cover 43 for opening and closing the first chamber and a top cover 44 for opening and closing the second chamber, the first chamber and the second chamber are communicated through a first through hole 45, one end of the water inlet connecting piece 75 is communicated with a water inlet hole 713 of the water pump, and the other end of the water inlet connecting piece 75 extends into the second chamber 42 through the first through hole 45.

The shell 4 is provided with a flow guide pipe 46 which is communicated with the second cavity and the water tank 2, one end of the flow guide pipe, which is positioned at the water tank, is communicated with a water suction pipe 9, one end of the water suction pipe 9, which enters the water tank, is connected with a pipette head 91, and a filtering piece is arranged in the pipette head. The draft tube 46 and the housing 4 are integrally formed.

The adapter 10 is installed in the second chamber 42, the adapter is a U-shaped tube structure with openings at two ends, the adapter is provided with a first opening 101, a second opening 102 and a third opening 103, a screw 104 is installed at the third opening for sealing, the third opening facilitates mold stripping, and the first opening and the second opening of the adapter are both rounded.

In order to lock the adapter on the housing through the screw, two first connection posts 105 are symmetrically disposed on the adapter, and a first connection hole is correspondingly disposed on the housing 4, and the screw fixes the adapter and the housing together through the first connection posts 105 and the first connection hole.

Be located first through-hole department in the second chamber and be equipped with first mounting groove 47, the first opening of crossover sub is arranged in first mounting groove, the first opening outer wall of crossover sub and first mounting groove contact, inner wall and the contact of the connecting piece that intakes, first mounting groove, crossover sub and the connecting piece that intakes are sealed simultaneously to first sealing washer 107.

A second mounting groove 48 is provided in the second chamber at the draft tube 46, a second opening of the adapter is disposed in the second mounting groove and is in fluid communication with the draft tube, and a second sealing ring 109 seals the adapter and the second mounting groove. Be equipped with first boss 481 in the second mounting groove, crossover sub's second opening inner wall is equipped with first recess 1021, second opening terminal surface and second mounting groove tank bottom surface butt, first boss and the cooperation of first recess. The adapter and the second mounting groove are mutually occluded, so that the connection is more stable and reliable, and good sealing performance is achieved.

The first mounting groove and the second mounting groove are integrally formed on the shell.

The water tank 2 is detachably connected to the housing, the water tank 2 has a tank bottom cover 21 and a tank door 22, the tank bottom cover 21 and the tank door 22 are hermetically connected to the water tank, and the tank door 22 can be opened to conveniently fill water into the water tank.

In the figure, 11 is a water outlet end cover for fixing the nozzle 1, and 12 is a clamp spring installed on the water outlet end cover.

Having described embodiments of the present application, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen in order to best explain the principles of the embodiments, the practical application, or improvements made to the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.

Claims (10)

1. A water pump of a tooth flushing device is characterized by comprising a pump shell and a metal sleeve;

the pump shell is provided with a cavity, a water outlet hole and a water inlet hole which are communicated with the cavity, the inner wall of the cavity is provided with at least one contact area, and the first connecting part is positioned in the contact area;

the metal sleeve is positioned in the cavity, the piston reciprocates in the metal sleeve, and the outer wall of the metal sleeve comprises at least one second connecting part which is in physical contact fit with the first connecting part in the cavity.

2. The water pump for a dental irrigator according to claim 1, wherein the openings at both ends of the inner wall of the metal sleeve have rounded corners, or the openings at both ends of the inner wall of the metal sleeve have rounded corners and rounded corners.

3. The water pump of the water toothpick according to claim 1 or 2, wherein the second connection portion of the metal sleeve comprises a first recess, and the first connection portion of the chamber is a first protrusion fitted in the first recess.

4. The water pump of the water toothpick according to claim 3, wherein the metal sleeve is cylindrical, and the first groove is an annular groove along a circumferential direction of the metal sleeve; or the metal sleeve is cylindrical, and the first groove is a groove along the length direction of the metal sleeve.

5. The water pump of the water toothpick according to claim 4, wherein the number of the first grooves is 2, and two first grooves are symmetrically arranged.

6. The water pump of the water toothpick according to claim 3, wherein the metal sleeve is cylindrical, the first grooves are formed in an outer side wall of the metal sleeve, and the first grooves are distributed uniformly.

7. The water pump of the water toothpick according to claim 1 or 2 wherein the second connection portion of the metal sleeve comprises at least one second protrusion extending therefrom, the first connection portion of the chamber being provided with a second recess, the second protrusion of the metal sleeve cooperating with the second recess.

8. The water pump of the water toothpick according to claim 1 or 2 wherein one of the second connection portion of the metal sleeve and the first connection portion of the chamber comprises at least one roughened region, the other being in physical contact with the roughened region.

9. The water pump of the water toothpick according to claim 1 or 2 wherein the inner wall of the metal sleeve is mirror finished.

10. A dental irrigator comprising a water pump according to any one of claims 1 to 9.

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