CN113229974B

CN113229974B - Pump case, pump subassembly and oral care device

Info

Publication number: CN113229974B
Application number: CN202110484884.2A
Authority: CN
Inventors: 周斌
Original assignee: Shenzhen Sushi Technology Co Ltd
Current assignee: Shenzhen Sushi Technology Co Ltd
Priority date: 2021-04-30
Filing date: 2021-04-30
Publication date: 2022-09-30
Anticipated expiration: 2041-04-30
Also published as: CN113229974A

Abstract

The application provides a pump case, pump assembly and oral care device. The pump shell comprises a main shell and two drainage shells; the main shell is provided with a cavity for accommodating the pump body, and the two drainage shells are provided with drainage channels respectively used for communicating the pump body; the two drainage shells are respectively arranged on two opposite sides of the main shell, and each drainage shell extends from the main shell towards the direction far away from the other drainage shell; one end of each of the two drainage shells, which is close to the main shell, is staggered along a first direction, and the first direction is intersected with the directions of the two opposite sides of the main shell. This application pump case is through establishing two drainage casings respectively in the relative both sides of main casing body to make two drainage casings's position stagger along the first direction, and the direction of the relative both sides of the first direction and the main casing body is crossing, and set up the appearance chamber with the holding pump body in the main casing body, and can utilize the regional actuating mechanism who installs the pump body between the main casing body and a drainage casing, so that the structure of the pump package spare that forms is more compact, and space utilization is high.

Description

Pump case, pump module and oral care device

Technical Field

The application belongs to the technical field of oral cavity cleaning, and more specifically relates to a pump case, a pump assembly and an oral cavity nursing device.

Background

Oral care devices, such as mouthwashes, are becoming increasingly popular with users. Current oral care devices, such as mouthwashes, typically use a pump to pump water. In particular, the shape and size of the pump, which is a critical component in oral care devices such as mouthrinsers, directly affects the volume, shape and performance of the oral care device. The water inlet pipe and the water outlet pipe are generally directly connected with the water inlet and the water outlet of the pump in the conventional oral care device, and the water inlet and the water outlet flow channels of the oral care device are usually on the same straight line or vertical to each other, so that the structure of a pump piece is not compact enough, and the space utilization rate is low.

Disclosure of Invention

An object of the embodiment of this application is to provide a pump case, pump assembly and oral care device to solve the pump assembly among the oral care device that exists among the prior art, the structure is compact enough, the problem that space utilization is low.

In order to achieve the above purpose, the embodiment of the present application adopts the following technical solutions: providing a pump casing comprising a main casing and two flow-inducing casings; the main shell is internally provided with a cavity for accommodating a pump body, the two drainage shells are internally provided with drainage channels respectively used for communicating the pump body, and each drainage channel is communicated with the cavity;

the two drainage shells are respectively arranged on two opposite sides of the main shell, and each drainage shell extends from the main shell towards the direction far away from the other drainage shell; two one end that the drainage casing is close to the main casing body staggers along first direction mutually, first direction with the direction of the relative both sides of main casing body is crossing.

In an alternative embodiment, the length directions of the two drainage housings are parallel;

and/or the length direction of at least one drainage shell is perpendicular to the length direction of the main shell;

and/or the first direction is perpendicular to the directions of two opposite sides of the main shell.

In an optional embodiment, a main passage is arranged at one end of the accommodating cavity in the main casing, the two drainage casings are respectively a first casing and a second casing, a distance from an intersection of the first casing and the main casing to the main passage is greater than a distance from an intersection of the second casing and the main casing to the main passage, the drainage passage in the first casing is a first passage, the drainage passage in the second casing is a second passage, the second passage is communicated with one end of the main passage, and a communication passage for communicating the other end of the main passage with the first passage is arranged between the first casing and the main casing.

In an alternative embodiment, the main passage is located at one end of the main housing, or the main passage is located at one side of the main housing.

In an alternative embodiment, a connecting plate is disposed between the first housing and the main housing, and the communication passage is disposed in the connecting plate.

In an alternative embodiment, an end of the connecting plate remote from the main channel is disposed protruding from the main housing.

In an alternative embodiment, the length direction of the secondary channel is parallel to the length direction of the primary channel.

In an alternative embodiment, the central axis of the secondary passageway is located on the side of the primary passageway adjacent the plenum.

In an optional embodiment, a gasket and a check valve are arranged in the second channel, the gasket is positioned at one end of the second channel close to the main channel, and the check valve abuts against the gasket.

In an alternative embodiment, a nipple is provided in the second passage, which nipple holds the periphery of the one-way valve against the gasket.

In an alternative embodiment, the shim is a hard shim.

In an optional embodiment, a check valve is arranged in the first passage or the communication passage, and a one-way valve is installed in the second passage; the one-way valve is in the same flow direction as the check valve.

In an alternative embodiment, the pump housing is a one-piece injection molded structure.

It is a further object of an embodiment of the present application to provide a pump assembly including a pump body for varying a pressure in the drainage channel and a pump housing as in any of the above embodiments, the pump body being mounted in the cavity.

In an alternative embodiment, the pump body includes a cylinder and a piston, the piston is slidably mounted in the cylinder, the cylinder is mounted in the cavity, and each of the drainage channels is respectively communicated with the cylinder.

In an alternative embodiment, the pump body further comprises a seal secured to the piston.

In an alternative embodiment, the sealing element is mounted at an end of the piston, and the pump body further includes a pressing pad for pressing the sealing element against the piston, and the pressing pad is fixedly connected with the piston.

In an optional embodiment, a first mounting hole is formed in an end portion of the piston, a second mounting hole is formed in the sealing element, a third mounting hole is formed in the pressing pad, the pump body further comprises a screw fixedly connected with the piston, the sealing element and the pressing pad, and the screw sequentially penetrates through the third mounting hole and the second mounting hole to be mounted in the first mounting hole;

or the end part of the piston is provided with a convex column, the piston is provided with a first mounting hole penetrating through the convex column, the sealing element is provided with a second mounting hole, the abutting pad is provided with a third mounting hole, the sealing element is sleeved on the convex column, the pump body further comprises a screw fixedly connected with the piston, the sealing element and the abutting pad, and the screw penetrates through the third mounting hole and is mounted in the first mounting hole.

It is a further object of an embodiment of the present application to provide an oral care device including a pump assembly as described in any of the above embodiments and a drive mechanism for driving the pump body of the pump assembly.

In an alternative embodiment, the drive mechanism includes a gear set that drives the pump body and a motor that drives the gear set; the gear set comprises at least one stage of planetary gear module.

In an alternative embodiment, the pump body is a plunger pump, the oral care device further comprises a connecting rod and a crank, the connecting rod is connected with the piston of the pump body, the crank is connected with the connecting rod, and the driving mechanism is connected with the crank; the crank is circular and is arranged in the circular hole in a matched mode, an eccentric hole is formed in the crank, and an output shaft of the driving mechanism is fixed in the eccentric hole.

The beneficial effect of the pump case that this application embodiment provided lies in: compared with the prior art, this application pump case is through establishing two drainage casings respectively in the relative both sides of main casing body, and make two drainage casings's position stagger along the first direction, and the direction of the relative both sides of the first direction and the main casing body is crossing, and set up the appearance chamber in main casing body, with the holding pump body, and can utilize the regional actuating mechanism who installs the pump body between the main casing body and a drainage casing, so that the structure of the pump subassembly that forms is more compact, and space utilization is high.

The beneficial effect of the pump package spare that this application embodiment provided lies in: compared with the prior art, this application pumping unit has used the pump case of above-mentioned embodiment, can locate the main casing body with the actuating mechanism of the pump body and be close to one side of a drainage casing body to promote the integrated level, promote space utilization.

The oral care device provided by the embodiment of the application has the advantages that: compared with the prior art, this application oral care device has used the pump package spare of above-mentioned embodiment, compact structure, and space utilization is high, and the volume is littleer.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or exemplary technical descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a first schematic structural diagram of a pump assembly provided in an embodiment of the present application;

FIG. 2 is a schematic structural diagram of a pump assembly according to an embodiment of the present disclosure;

FIG. 3 is an exploded schematic view of a pump assembly provided in accordance with an embodiment of the present application;

FIG. 4 is a cross-sectional structural schematic view of the pump assembly shown in FIG. 3;

FIG. 5 is an enlarged view of portion A of FIG. 4;

FIG. 6 is a cross-sectional structural schematic view of a pump casing in a pump assembly provided in accordance with an embodiment of the present application;

FIG. 7 is an exploded view of a pump body of a pump assembly according to an embodiment of the present application;

FIG. 8 is a cross-sectional exploded block diagram of a pump body of a pump assembly provided in accordance with an embodiment of the present application;

FIG. 9 is a cross-sectional structural schematic view of a pump casing in a pump assembly provided in accordance with yet another embodiment of the present application.

Fig. 10 is a schematic view of the pump body and the driving mechanism in combination in an oral care device provided by an embodiment of the present application;

FIG. 11 is a schematic view of the pump body and the driving mechanism of FIG. 10;

fig. 12 is a cross-sectional structural view of a gear set in an oral care device provided in an embodiment of the present application;

fig. 13 is an internal structural view of the gear set of fig. 12.

Wherein, in the drawings, the reference numerals are mainly as follows:

100-a pump assembly;

10-a pump housing; 11-a main housing; 111-a chamber; 112-a main channel; 113-a separator; 12-a drainage housing; 121-a first housing; 122-a second housing; 123-a drainage channel; 1231-first channel; 1232-a second channel; 13-a connecting plate; 131-a communication channel; 14-a one-way valve; 141-a gasket; 15-a check valve; 161-pipe joint; 162-a junction tube;

20-a pump body; 21-cylinder body; 22-a piston; 221-convex column; 222-a first mounting hole; 23-a seal; 231-second mounting holes; 24-a pressure pad; 241-a third mounting hole;

30-a drive mechanism; 31-a motor; 311-a main shaft; a 32-gear set; 321-an output shaft; 322-a transmission housing; 323-a planetary gear module; 3231-sun gear; 3232-planet wheel; 3233-a planet carrier disc; 324-a bearing;

41-a connecting rod; 410-a circular hole; 42-crank; 420-eccentric hole.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating 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 the present application, "a plurality" means two or more unless specifically limited otherwise. The meaning of "a number" is one or more unless specifically limited otherwise.

In the description of the present application, it is to be understood that the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present application and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present application.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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 the case may be.

Reference throughout this specification to "one embodiment," "some embodiments," or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the present application. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," or the like, in various places throughout this specification are not necessarily all referring to the same embodiment, but rather "one or more but not all embodiments" unless specifically stated otherwise. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

Referring to fig. 1-3, a pump assembly 100 provided herein is now described. The pump assembly 100 includes a pump body 20 and a pump housing 10, wherein the pump body 20 is used for adjusting pressure so as to realize pumping and/or pumping, and this application is for pump fluid, and specifically for example, but not limited thereto, water is used as an example for illustration. The pump body 20 is installed in the pump case 10, supports and protects the pump body 20 by the pump case 10, and guides water into and out of the pump body 20.

Referring to fig. 4 and 6, the pump casing 10 includes a main casing 11 and two drain casings 12; the main housing 11 has a cavity 111 formed therein for accommodating the pump body 20, that is, when in use, the pump body 20 can be installed in the cavity 111. Drainage channels 123 are formed in the two drainage shells 12, each drainage channel 123 is communicated with the containing cavity 111, and the two drainage channels 123 are respectively used for being communicated with the pump body 20, so that the pump body 20 pumps water flow into one of the drainage channels 123, and the pump body 20 leads out the pumped water flow from the other drainage channel 123.

Two drainage casings 12 are installed respectively in the relative both sides of main casing body 11, and each drainage casing 12 is kept away from the direction extension setting of another drainage casing 12 by main casing body 11 orientation. And one end of the two drainage shells 12 close to the main shell 11 is staggered along a first direction, and the first direction is intersected with the directions F1 of two opposite sides of the main shell 11, so that the pump shell 10 can integrally form a Z-shaped structure, and a certain space is formed between the main shell 11 and the position close to the drainage shell 12, so that when the pump assembly is used, a driving mechanism of the pump body 20 can be installed in the space, namely the driving mechanism of the pump body 20 is arranged on one side of the main shell 11 close to one drainage shell 12, so that the structure of the pump assembly 100 is more compact, the space utilization rate is improved, and further the volume of an oral care device using the pump assembly 100 can be made smaller.

The application provides a pump case 10, compare with prior art, establish the relative both sides at main casing body 11 respectively through two drainage casing 12, and make two drainage casing 12's position stagger along the first direction, and the direction F1 of the relative both sides of first direction and main casing body 11 is crossing, and open in main casing body 11 and establish appearance chamber 111, with the holding pump body 20, and can utilize the regional actuating mechanism who installs pump body 20 between main casing body 11 and a drainage casing 12, so that the structure of the pump subassembly 100 that forms is more compact, and space utilization is high.

Compared with the prior art, the pump assembly 100 provided by the application uses the pump shell 10 of the above embodiment, and the driving mechanism of the pump body 20 can be arranged on one side of the main shell body 11 close to one drainage shell body 12, so that the integration level is improved, and the space utilization rate is improved.

In one embodiment, the pump body 20 may be a complete pump element, the pump element may be mounted in the cavity 111, and the drainage channels 123 in the two drainage housings 12 are connected to the water inlet and the water outlet of the pump element, respectively, so that the main housing 11 supports and protects the pump element, and the drainage channel 123 in one drainage housing 12 leads water out of the water inlet of the pump element, and the pumped water is pumped out of the water outlet into the other drainage housing 12. The pumping element may be a vane pump, a plunger pump, or the like.

In one embodiment, the first direction is perpendicular to the directions F1 of the two opposite sides of the main housing 11, that is, the first direction is the direction F2 of the two opposite ends of the main housing 11, and the direction F1 of the two opposite sides of the main housing 11 is perpendicular to the direction F2 of the two opposite ends of the main housing 11, that is, the first direction is perpendicular to the direction F1 of the two opposite sides of the main housing 11, so that the two fluid-guiding housings 12 can be better staggered on the main housing 11, so that the pump housing 10 is integrally formed into a Z-like structure, which is convenient for design and manufacture. Of course, in some embodiments, the first direction intersects the directions F1 of the two opposite sides of the main housing 11, the first direction may form an angle of 85 degrees with the directions F1 of the two opposite sides of the main housing 11, or the first direction may form an angle of 80 degrees, 75 degrees, 70 degrees with the directions F1 of the two opposite sides of the main housing 11.

In one embodiment, fig. 3, 4 and 6, the main housing 11 is provided with a main passage 112, the main passage 112 is located at one end of the cavity 111, and the main passage 112 communicates with the cavity 111. For convenience of description, the two drain housings 12 are respectively defined as a first housing 121 and a second housing 122, the drain passage 123 in the first housing 121 is a first passage 1231, and the drain passage 123 in the second housing 122 is a second passage 1232. Two drainage housings 12 intersect the main housing 11 in the distance to the main channel 112: one of the flow-inducing housings 12, which has a larger distance from the main passage 112 at the intersection with the main housing 11, is referred to as a first housing 121, and one of the flow-inducing housings 12, which has a smaller distance from the main passage 112 at the intersection with the main housing 11, is referred to as a second housing 122; that is, the distance from the intersection of the first casing 121 and the main casing 11 to the main passage 112 is greater than the distance from the intersection of the second casing 122 and the main casing 11 to the main passage 112, that is, in the two drainage casings 12: one of the drainage housings 12 that is farther from the main passage 112 is a first housing 121, and the other drainage housing 12 is a second housing 122. A communication passage 131 is arranged between the first housing 121 and the main housing 11, and the first passage 1231 and the main passage 112 are communicated through the communication passage 131; the second passage 1232 in the second housing 122 communicates with one end of the main passage 112, and the communication passage 131 communicates with the other end of the main passage 112. Thus, when the pump body 20 with the variable volume is placed in the cavity 111, the pressure in the drainage channel 123 can be changed when the pump body 20 is operated. When the two drainage channels 123 or the pipelines connected with the two drainage channels 123 are respectively provided with the one-way control valve, water pumping can be realized. In some embodiments, the pumping may be achieved by placing the complete pumping element in the cavity 111, placing the water inlet and the water outlet of the pumping element in the main channel 112, connecting the water inlet of the pumping element to the second channel 1232, and connecting the water outlet of the pumping element to the communication channel 131. Of course, the complete pumping element may be disposed in the cavity 111, and the water inlet and the water outlet of the pumping element may be disposed in the main channel 112, the water outlet of the pumping element may be connected to the second channel 1232, and the water inlet of the pumping element may be connected to the communicating channel 131, so as to pump water.

In an embodiment, the communication channel 131 and the cavity 111 are spaced apart from each other, that is, the partition 113 is disposed between the communication channel 131 and the cavity 111, so that not only the water flow can be better guided to enter the main channel 112, but also the pump body 20 can be better wrapped, that is, the partition 113 can better support the pump body 20, and the capability of the pump body 20 to bear impact is improved, so as to prolong the service life.

In one embodiment, referring to fig. 3, 4 and 6, a connecting plate 13 is disposed between the main housing 11 and the first housing 121 to facilitate connection between the main housing 11 and the first housing 121; and the communicating channel 131 is arranged in the connecting plate 13, so that the communicating channel 131 can be more conveniently arranged, the thickness of the partition 113 between the communicating channel 131 and the accommodating cavity 111 can be ensured, the strength of the partition 113 is increased, the pump body 20 is better supported, and meanwhile, the communicating channel 131 can be conveniently processed and manufactured. Of course, in some embodiments, the communication channel 131 may be provided directly at the connection of the first housing 121 and the main housing 11.

In one embodiment, the connecting plate 13 is disposed to protrude from the main housing 11 away from the end of the second housing 122, that is, the connecting plate 13 protrudes from the end of the main housing 11 away from the main channel 112, so that when the opening-shaped communication channel 131 is formed during manufacturing, the communication channel 131 can be conveniently sealed, and the manufacturing is convenient. In addition, after the pump body 20 is communicated with the driving structure, the connecting plate 13 can play a certain protection role.

In one embodiment, the pump casing 10 is an integral injection molding structure, which is convenient to manufacture and low in cost, and can ensure the connection strength of the first casing 121, the main casing 11 and the second casing 122. Of course, in some embodiments, the first housing 121, the main housing 11 and the second housing 122 may be manufactured separately and then assembled and fixedly connected.

In one embodiment, referring to fig. 6, the main passage 112 is located at one end of the main housing 11, that is, the axial direction of the cavity 111 is disposed along the direction F2 of the two opposite ends of the main housing 11, that is, the cavity 111 is disposed extending along the direction F2 of the two opposite ends of the main housing 11.

In one embodiment, referring to fig. 9, the main passage 112 is located on one side of the main housing 11, that is, the axial direction of the cavities 111 is along the direction F1 on two opposite sides of the main housing 11. That is, the cavities 111 extend in the direction F1 on opposite sides of the main housing 11.

In one embodiment, referring to fig. 4 and 6, the length direction of the main channel 112 is parallel to the axial direction of the second channel 1232, and the structure makes the extending direction of the main channel 112 and the extending direction of the second channel 1232 the same, so as to facilitate the manufacturing process. Of course, in some embodiments, the length of the primary channel 112 may be disposed at an angle to the axial direction of the secondary channel 1232.

In one embodiment, the central axis of the second passage 1232 is located at one side of the main passage 112 close to the cavity 111, such that one end of the second casing 122 away from the first casing 121 (in the direction of the two opposite ends of the main casing 11) can be disposed to be offset towards the direction close to the first casing 121 (in the direction of the two opposite ends of the main casing 11), so as to make the structure of the pump assembly 100 more compact, reduce the volume of the pump assembly 100, and improve the space utilization. In addition, the structure can also set the cross-sectional area of the main channel 112 to be smaller, so that the volume of the main channel 112 is set to be smaller, so that the pump body 20 pumps water, and the efficiency is improved.

In one embodiment, referring to fig. 4-6, a gasket 141 and a check valve 14 are disposed in the second passage 1232 at an end adjacent to the main passage 112. By placing the check valve 14 close to the main passage 112, the backflow of water in the second passage 1232 can be better avoided, and the second passage 1232 can be set shorter to reduce the volume of the pump housing 10, and thus the pump assembly 100. The gasket 141 is located at an end of the second passage 1232 near the main passage 112, and the check valve 14 abuts against the gasket 141. It can be understood that, since the central axis of the second passage 1232 is located at the side of the main passage 112 close to the receiving cavity 112, the connection surface between the second passage 1232 and the main housing 11 is not symmetrical about the central axis of the main passage 112, and further, the surface of the check valve 14 facing the main passage 112 cannot be completely abutted against the connection surface, which affects the working effect of the check valve 14. By arranging the abutting gasket 141 in the second passage 1232 and abutting the check valve 14 against the gasket 141, one surface of the check valve 14 facing the main passage 112 can be completely abutted against one surface of the abutting gasket 141 facing away from the main passage 112, so as to ensure the working effect of the check valve 14. In addition, the retaining gasket 141 can improve the sealing performance of the second passage 1232.

In one embodiment, the gasket 141 is a hard gasket, the check valve 14 abuts against the hard gasket, and the hard gasket is arranged to better support the check valve 14, increase the structural strength, and better ensure the working stability and effectiveness of the check valve 14; in addition, the hard gasket can better bear impact force and prolong the service life.

In one embodiment, the hard spacers may be stainless steel pads, aluminum alloy pads, hard plastic pads, or the like.

In one embodiment, the check valve 14 can be a duckbill valve, which is simple in structure, low in cost and convenient to install. Of course, other types of check valves may be used for check valve 14.

In one embodiment, the second channel 1232 has a tube connector 161 mounted therein, and the tube connector 161 is provided to facilitate connection of external piping and use. Of course, in some embodiments, the second housing 122 may be directly connected to the external pipe.

In one embodiment, the nipple 161 holds the periphery of the check valve 14 against the gasket 141 to secure the check valve 14. Of course, in some embodiments, the check valve 14 may be separately secured in the second passage 1232, such as by adhesively attaching the check valve 14.

In one embodiment, referring to fig. 3, 4 and 6, the pump assembly 100 further includes an adapter tube 162, the adapter tube 162 being mounted in the first passageway 1231 to facilitate connection with external tubing. Of course, in other embodiments, the first housing 121 may be directly connected to the external pipe.

In one embodiment, the length direction of the main channel 112 is perpendicular to the axial direction of the cavity 111, which not only facilitates the manufacturing process, such as the processing of the main channel 112 and the cavity 111 in the main housing 11, but also reduces the space occupied by the main channel 112, and thus the pump housing 10 can be made smaller and the volume of the pump housing 10 can be reduced. Of course, in some embodiments, the length direction of the main channel 112 may be inclined to the axial direction of the cavity 111, for example, the included angle between the length direction of the main channel 112 and the axial direction of the cavity 111 may be set to 30-150 degrees, so as to be suitable for oral care devices with different shapes.

In one embodiment, the length direction of at least one drainage housing 12 is perpendicular to the length direction of the main housing 11, i.e. the length direction of the first housing 121 may be perpendicular to the length direction of the main housing 11. The longitudinal direction of the second housing 122 may be perpendicular to the longitudinal direction of the main housing 11. It is also possible to arrange the longitudinal directions of the first and

second housings

121 and 122 to be perpendicular to the longitudinal direction of the main housing 11.

In one embodiment, the length direction of the first housing 121 is perpendicular to the length direction of the main housing 11, so as to facilitate the manufacturing process, and the pump housing 10 can be made more compact, and the volume of the pump housing 10 can be reduced; of course, in some other embodiments, the longitudinal direction of the first housing 121 may be inclined to the longitudinal direction of the main housing 11, and the longitudinal direction of the first housing 121 needs to be arranged at a certain angle to the longitudinal direction of the main housing 11. In one embodiment, the angle between the length direction of the first housing 121 and the length direction of the main housing 11 ranges from 30 to 150 degrees in order to be suitable for use in oral care devices of different shapes.

In one embodiment, the length direction of the second housing 122 is perpendicular to the length direction of the main housing 11, so as to facilitate the manufacturing, and make the structure of the pump housing 10 more compact, and reduce the volume of the pump housing 10; of course, in some other embodiments, the length direction of the second casing 122 may be inclined from the length direction of the main casing 11, and the length direction of the second casing 122 needs to be arranged at a certain angle with the length direction of the main casing 11. In one embodiment, the angle between the length of the second housing 122 and the length of the main housing 11 is in the range of 30-150 degrees to accommodate different shapes of oral care devices.

In one embodiment, the length direction of the first casing 121 and the length direction of the second casing 122 may be arranged in parallel, that is, the length directions of the two pumping casings 12 are parallel, so as to facilitate the determination of the pumping direction of the pump casing 10 and facilitate the manufacturing process.

In one embodiment, a check valve 15 is installed in the first passage 1231 to prevent water in the first passage 1231 from flowing backward, and the check valve 15 is installed at an end of the first passage 1231 near the communication passage 131 to facilitate installation and fixation of the check valve 15.

In one embodiment, the check valve 15 can be a duckbill valve, which is simple in structure, low in cost and convenient to install. Of course, other types of one-way valves may be used for the check valve 15.

In one embodiment, referring to fig. 3, 4 and 7, the pump body 20 includes a cylinder 21 and a piston 22, the cylinder 21 is installed in the cavity 111, the piston 22 is slidably installed in the cylinder 21, and the drainage channels 123 respectively communicate with the cylinder 21, that is, the first channel 1231 and the second channel 1232 respectively communicate with the cylinder 21.

In one embodiment, a main passage 112 may be provided in the main housing 11 to communicate the first passage 1231 and the second passage 1232 with the main passage 112, respectively, and the main passage 112 is located at one end of the housing 111 to communicate with the cylinder 21 to communicate the first passage 1231 and the second passage 1232 with the cylinder 21, respectively, so that the volume can be changed to adjust the water pressure in the drain passage 123 when the piston 22 slides in the cylinder 21. When the two drainage channels 123 or the pipelines connected with the two drainage channels 123 are respectively provided with the one-way control valve, water pumping can be realized.

In one embodiment, the check valve 15 is provided in the first passage 1231 or the communication passage 131, that is, the check valve 15 may be installed at any position from the first passage 1231 to the communication position of the communication passage 131 with the main passage 112, that is, the check valve 15 may be installed in the first passage 1231, the check valve 15 may be installed at the communication position of the communication passage 131 with the main passage 112, and the check valve 15 may be installed in the communication passage 131. The one-way valve 14 is installed in the second passage 1232, and the one-way valve 14 and the check valve 15 are in the same direction, if the flow direction of the one-way valve 14 is from the first passage 1231 to the second passage 1232, then the flow direction of the check valve 15 is from the first passage 1231 to the second passage 1232, so that the first passage 1231 is the water inlet passage of the pump assembly 100, and the second passage 1232 is the water outlet passage of the pump assembly 100. Of course, in some embodiments, the one-way valve 14 flows from the second passage 1232 to the first passage 1231, and the check valve 15 flows from the second passage 1232 to the first passage 1231, such that the first passage 1231 is the outlet passage of the pump assembly 100 and the second passage 1232 is the inlet passage of the pump assembly 100.

In one embodiment, referring to fig. 7 and 8, the pump body 20 further includes a sealing member 23, and the sealing member 23 is fixed to the piston 22 for better sealing and improving the efficiency of pumping water by the pump body 20.

In one embodiment, the pump body 20 further includes a pressing pad 24, the sealing member 23 is mounted at an end of the piston 22, the pressing pad 24 is fixedly connected to the piston 22, and the pressing pad 24 is used for pressing the sealing member 23 against the piston 22 to press and fix the sealing member 23 on the piston 22, so as to improve stability of connection between the piston 22 and the sealing member 23, ensure that the sealing member 23 is in sealing fit with the cylinder 21, and improve efficiency of pumping water by the pump body 20.

In one embodiment, the tamp pad 24 may be a stainless steel pad, an aluminum alloy pad, a rigid plastic pad, or the like.

In one embodiment, a protruding pillar 221 is disposed at an end of the piston 22, a first mounting hole 222 is disposed on the piston 22, the first mounting hole 222 penetrates the protruding pillar 221, a second mounting hole 231 is disposed on the sealing member 23, a third mounting hole 241 is disposed on the pressing pad 24, the sealing member 23 is sleeved on the protruding pillar 221, and the pump body 20 further includes a screw, which penetrates the third mounting hole 241 and is mounted in the first mounting hole 222 to fixedly connect the piston 22, the sealing member 23, and the pressing pad 24.

Of course, in some embodiments, the end of the piston 22 may also be provided with a first mounting hole 222, the sealing element 23 is provided with a second mounting hole 231, the pressing pad 24 is provided with a third mounting hole 241, and the pump body 20 further includes a screw, which sequentially passes through the third mounting hole 241 and the second mounting hole 231 and is mounted in the first mounting hole 222 to fixedly connect the piston 22, the sealing element 23, and the pressing pad 24.

Compared with the structure of the existing pump body, the length of the pump body 20 in the axial direction thereof is smaller, and the volume of the pump assembly 100 using the pump body 20 can be reduced.

The pump assembly 100 of the embodiment of the present application, which has a compact structure and a small volume, can be applied not only to oral care devices, but also to other occasions where the pump assembly needs to be used, such as small home appliances or personal care appliances.

The embodiment of the application also provides an oral care device. Referring to fig. 10 and 11, the oral care device includes a pump assembly 100 and a driving mechanism 30 according to any of the above embodiments, wherein the driving mechanism 30 is connected to the pump body 20 of the pump assembly 100 to drive the pump body 20 to operate. The oral care device, using the pump assembly 100 of the above embodiment, has a compact structure, high space utilization and a smaller volume.

In one embodiment, when the pump body 20 is a rotary positive displacement pump such as a vane pump, the driving mechanism 30 may include a motor 31 to drive the pump body 20. Of course, the driving mechanism 30 may further include a gear set 32, the gear set 32 is driven by the motor 31, and the pump body 20 is driven by the gear set 32, so as to adjust the rotation speed and increase the torque by the gear set 32.

In one embodiment, referring to fig. 10 and 11, the pump body 20 is a plunger pump, such as the pump body 20 including a cylinder 21 and a piston 22 to form a plunger pump structure. The oral care device further comprises a connecting rod 41 and a crank 42, wherein the connecting rod 41 is connected with the piston 22 of the pump body 20, the crank 42 is connected with the connecting rod 41, and the driving mechanism 30 is connected with the crank 42, so that the crank 42 is driven by the driving mechanism 30 to drive the connecting rod 41 to reciprocate, and further drive the piston 22 to reciprocate.

In one embodiment, the drive mechanism 30 may include a motor 31 to drive the pump body 20. Of course, the driving mechanism 30 may further include a gear set 32, the gear set 32 is driven by the motor 31, and the pump body 20 is driven by the gear set 32, so as to adjust the rotation speed and increase the torque by the gear set 32.

In one embodiment, a circular hole 410 is formed in an end of the connecting rod 41 away from the pump body 20, the crank 42 is circular, the crank 42 is installed in the circular hole 410, an eccentric hole 420 is formed in the crank 42, the output shaft 321 of the driving mechanism 30 is fixed in the eccentric hole 420, and the output shaft 321 drives the crank 42 to rotate in the circular hole 410, so as to drive the connecting rod 41 to move. The round hole 410 is arranged on the connecting rod, and the crank 42 is arranged to be round, so that the connecting rod 41 can be driven to move more stably, and the volume is reduced. Of course, in some embodiments, the crank 42 may have a rod shape or other shapes, and the crank 42 may be hinged to the connecting rod 41. In some embodiments, when a low speed motor 31 is used, the spindle 311 of the motor 31 may be directly mounted in the eccentric hole 420 of the crank 42 to directly drive the crank 42 to rotate by the motor 31.

In the embodiment of fig. 11, the crank 42 is directly connected to the output shaft 321, and the face gear used in the existing tooth irrigator is eliminated, so that the volume of the oral care device can be further reduced.

In one embodiment, referring to fig. 12 and 13, the gear assembly 32 includes a planetary gear module 323, the planetary gear module 323 is used, and the structure is compact and the transmission ratio is high. Of course, in some embodiments, other reduction gear modules, such as parallel axis reduction gear modules, may be used for the gear set 32.

In one embodiment, the gear assembly 32 includes a two-stage planetary gear set 323 for better lift ratios and a more compact configuration. Of course, in other embodiments, the gear set 32 may include only one stage of the planetary gear module 323. In still other embodiments, the gear set 32 may also include three-stage, four-stage planetary gear sets, etc., without limitation.

In one embodiment, the gear set 32 further includes a transmission housing 322 to support the planetary gear module 323 and facilitate assembly with the motor 31.

In one embodiment, the gear set 32 further includes a bearing 324, the bearing 324 is mounted in the transmission housing 322, and the bearing 324 is sleeved on the output shaft 321, so that the output shaft 321 can rotate more flexibly. The bearing 324 may be a powder sintered oil bearing, but is not limited thereto. In other embodiments, the bearing 324 may also be replaced with a copper sleeve.

In one embodiment, the planetary gear module 323 includes a sun gear 3231, a plurality of planet gears 3232, and a carrier plate 3233, the planet gears 3232 are mounted on the carrier plate 3233, such as by forming insertion holes in the carrier plate 3233, and the rotation axes of the planet gears 3232 are inserted into the corresponding insertion holes to rotatably mount the planet gears 3232 on the carrier plate 3233. The sun gear 3231 is driven to rotate by a main shaft 311 of the motor 31, and the planet carrier 3233 is driven to rotate by the planet gear 3232, and further the output shaft 321 is driven to rotate by the planet carrier 3233.

When the planetary gear module 323 is multi-stage, the sun gear 3231 of the first stage is connected to the main shaft 311 of the motor 31, the planet carrier 3233 of the previous stage drives the sun gear 3231 of the next stage to rotate, and the planet carrier 3233 of the last stage drives the output shaft 321 to rotate, so as to realize a larger transmission ratio.

Compared with the conventional pump assembly 100, the dental irrigator of the embodiment has the advantages that the overall height can be reduced by 17mm, the width can be reduced by 3mm, the total volume can be reduced by 10%, the accommodating capacity of the battery can be increased by 50%, and the volume of the motor 31 can be larger.

The oral care device of this application embodiment, the volume is littleer, can use more powerful motor 31, and power is higher, conveniently carries the use, washes efficiently, and clean ability is strong.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A pump casing, characterized by: comprises a main shell and two drainage shells; the main shell is internally provided with a containing cavity for containing a pump body, the two drainage shells are internally provided with drainage channels respectively used for communicating the pump body, and each drainage channel is communicated with the containing cavity;

the two drainage shells are respectively arranged on two opposite sides of the main shell, and each drainage shell extends from the main shell towards the direction far away from the other drainage shell; one ends of the two drainage shells, which are close to the main shell, are staggered along a first direction, and the first direction is intersected with the directions of two opposite sides of the main shell;

in the main casing body in the one end of appearance chamber is equipped with the main entrance, two drainage casing is first casing and second casing respectively, first casing with the crossing of main casing body extremely the distance of main entrance is greater than the second casing with the crossing of main casing body extremely the distance of main entrance, in the first casing drainage channel is first passageway, in the second casing drainage channel is the second passageway, the second passageway with the one end of main passageway is linked together, first casing with be equipped with the intercommunication between the main casing body the other end of main passageway with the intercommunication passageway of first passageway.

2. A pump casing according to claim 1, wherein: the length directions of the two drainage shells are parallel;

3. A pump casing according to claim 1 or claim 2, wherein: the main channel is located at one end of the main casing body, or the main channel is located at one side of the main casing body.

4. A pump casing according to claim 1 or claim 2, wherein: a connecting plate is arranged between the first shell and the main shell, and the communicating channel is arranged in the connecting plate.

5. The pump casing of claim 4, wherein: one end of the connecting plate, which is far away from the main channel, protrudes out of the main shell.

6. A pump casing according to claim 1 or claim 2, wherein: the length direction of the second channel is parallel to the length direction of the main channel.

7. The pump casing of claim 6, wherein: the central axis of the second channel is positioned on one side of the main channel close to the cavity.

8. The pump casing of claim 7, wherein: and a gasket and a one-way valve are arranged in the second channel, the gasket is positioned at one end of the second channel close to the main channel, and the one-way valve is abutted against the gasket.

9. The pump casing of claim 8, wherein: and a pipe joint is arranged in the second channel and is used for abutting the periphery of the one-way valve on the gasket.

10. The pump casing of claim 8, wherein: the gasket is a hard gasket.

11. A pump casing according to claim 1 or claim 2, wherein: a check valve is arranged in the first channel or the communication channel, and a one-way valve is arranged in the second channel; the one-way valve is in the same flow direction as the check valve.

12. A pump casing according to claim 1 or claim 2, wherein: the pump shell is of an integral injection molding structure.

13. A pump assembly comprising a pump body for varying the pressure in the drainage passage and a pump housing as claimed in any one of claims 1 to 12, the pump body being mounted in the chamber.

14. The pump assembly of claim 13, wherein: the pump body comprises a cylinder body and a piston, the piston is slidably mounted in the cylinder body, the cylinder body is mounted in the containing cavity, and each drainage channel is communicated with the cylinder body respectively.

15. The pump assembly of claim 14, wherein: the pump body further includes a seal member secured to the piston.

16. The pump assembly of claim 15, wherein: the sealing element is arranged at the end part of the piston, the pump body further comprises a pressing pad which is used for pressing the sealing element against the piston, and the pressing pad is fixedly connected with the piston.

17. The pump assembly of claim 16, wherein: the pump body also comprises a screw fixedly connected with the piston, the sealing element and the pressing pad, and the screw sequentially penetrates through the third mounting hole and the second mounting hole to be mounted in the first mounting hole;

18. An oral care device, characterized in that: a drive mechanism comprising a pump assembly according to any one of claims 13 to 17 and a pump body for driving the pump assembly, the main housing defining a space adjacent each of the plurality of pumping housings, the drive mechanism being mounted in one of the spaces and the drive mechanism being provided on a side of the main housing adjacent one of the plurality of pumping housings.

19. The oral care device of claim 18, wherein the drive mechanism includes a gear set that drives the pump body and a motor that drives the gear set; the gear set comprises at least one stage of planetary gear module.

20. The oral care device of claim 18, wherein: the pump body is a plunger pump, the oral care device further comprises a connecting rod and a crank, the connecting rod is connected with a piston of the pump body, the crank is connected with the connecting rod, and the driving mechanism is connected with the crank; the crank is circular and is arranged in the circular hole in a matched mode, an eccentric hole is formed in the crank, and an output shaft of the driving mechanism is fixed in the eccentric hole.