CN219940848U

CN219940848U - Oral cavity cleaning device

Info

Publication number: CN219940848U
Application number: CN202320571753.2U
Authority: CN
Inventors: 刘光辉; 徐升阳; 陈真; 杨勇
Original assignee: Shenzhen Xinyue Creation Technology Co ltd
Current assignee: Shenzhen Xinyue Creation Technology Co ltd
Priority date: 2023-03-21
Filing date: 2023-03-21
Publication date: 2023-11-03
Anticipated expiration: 2033-03-21

Abstract

The utility model discloses an oral cavity cleaning device, comprising: the device comprises a shell, a first driving assembly and a second driving assembly, wherein a first liquid accommodating bin and a second liquid accommodating bin which are mutually separated are arranged in the shell, a mixing cavity and an intermediate bin are also arranged in the shell, the mixing cavity is suitable for being communicated with the first liquid accommodating bin, the intermediate bin is suitable for being communicated with the second liquid accommodating bin, and the intermediate bin is suitable for being communicated with the mixing cavity; the first driving component is used for conveying the first dental cleaning solution in the first liquid accommodating bin to the mixing cavity; the second dental cleaning solution in the second liquid containing bin is suitable for flowing into the intermediate bin, and the second driving component is used for conveying the second dental cleaning solution in the intermediate bin to the mixing cavity. According to the oral cavity cleaning device provided by the embodiment of the utility model, the ratio of the first tooth cleaning liquid to the second tooth cleaning liquid which enter the mixing cavity in unit time can be controlled, so that different use requirements of users can be met.

Description

Oral cavity cleaning device

Technical Field

The utility model relates to the field of articles for daily use, in particular to an oral cavity cleaning device.

Background

In the related art, when using the oral cavity cleaning device, a second component (for example, mouthwash) is sometimes required to be added, and the second component is often manually added into a water tank of the oral cavity cleaning device to dilute, and then the diluted second component is extracted from the water tank to use, so that the manual addition mode is easy to spill, the operation is inconvenient, and in the process of using the oral cavity cleaning device, the concentration of the diluted second component is sometimes seriously uneven in the process of before and after tooth rinsing. Alternatively, in other embodiments, the oral cleaning device is provided with a receiving compartment for storing the second component, the receiving compartment is pierced directly by the piercing structure of the oral cleaning device, and the second component flows into the water tank by gravity, but it is difficult to control the ratio of the two components, that is, it is difficult to control the concentration of the second component; and the second component is difficult to uniformly diffuse in the water tank, so that the concentration of the second component in the water tank is uneven. Thus, there is a need for improvement.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, one object of the present utility model is to provide an oral cleaning device, in which a first driving assembly drives a first cleaning liquid in a first liquid accommodating chamber into a mixing chamber, a second driving assembly drives a second cleaning liquid in an intermediate chamber into the mixing chamber, and the first cleaning liquid and the second cleaning liquid can be fully mixed in the mixing chamber; and the first drive assembly and the second drive assembly can be controlled independently, so that the speed of the first tooth cleaning liquid and the second tooth cleaning liquid flowing into the mixing cavity is controllable, the proportion of the first tooth cleaning liquid and the second tooth cleaning liquid which enter the mixing cavity in unit time is controllable, the concentration of the first tooth cleaning liquid and the concentration of the second tooth cleaning liquid in the mixing liquid are controllable, for example, the concentration of the diluted second tooth cleaning liquid is kept consistent before and after oral cavity cleaning, and different use requirements of users can be met.

An oral cleaning device according to an embodiment of the utility model comprises: the shell is internally provided with a first liquid accommodating bin and a second liquid accommodating bin which are mutually separated, the shell is internally provided with a mixing cavity and an intermediate bin, the mixing cavity is suitable for being communicated with the first liquid accommodating bin, the intermediate bin is suitable for being communicated with the second liquid accommodating bin, and the intermediate bin is suitable for being communicated with the mixing cavity; the first driving component is arranged in the shell and is used for conveying the first tooth cleaning liquid in the first liquid accommodating bin to the mixing cavity; the second drive assembly is used for conveying the second dental cleaning solution in the intermediate bin to the mixing cavity.

According to the oral cavity cleaning device provided by the embodiment of the utility model, the first driving component drives the first tooth cleaning liquid in the first liquid accommodating bin to enter the mixing cavity, the second driving component drives the second tooth cleaning liquid in the middle bin to enter the mixing cavity, and the first tooth cleaning liquid and the second tooth cleaning liquid can be fully mixed in the mixing cavity; and the first drive assembly and the second drive assembly can be controlled independently, so that the speed of the first tooth cleaning liquid and the second tooth cleaning liquid flowing into the mixing cavity is controllable, the proportion of the first tooth cleaning liquid and the second tooth cleaning liquid which enter the mixing cavity in unit time is controllable, the concentration of the first tooth cleaning liquid and the concentration of the second tooth cleaning liquid in the mixing liquid are controllable, for example, the concentration of the diluted second tooth cleaning liquid is kept consistent before and after oral cavity cleaning, and different use requirements of users can be met.

According to some embodiments of the utility model, the mixing chamber and the intermediate chamber are adapted to communicate through a first flow passage, the second drive assembly is adapted to deliver a second prophy solution within the intermediate chamber to the mixing chamber through the first flow passage, and the oral cleaning device further comprises a first control valve for opening and closing the first flow passage.

According to some alternative embodiments of the utility model, the first control valve is a one-way valve and the first control valve is one-way conductive in a direction from the intermediate chamber to the mixing chamber.

According to some alternative embodiments of the present utility model, the second driving assembly includes a second driving mechanism and a second piston, the second driving mechanism is in driving connection with the second piston, so as to drive the second piston to be movable along a first direction, at least part of the second piston is located in the intermediate chamber, a second liquid temporary storage chamber with variable volume is defined between the second piston and the inner wall of the intermediate chamber, the second liquid temporary storage chamber and the mixing chamber are adapted to be communicated through the first flow channel, and the second liquid temporary storage chamber is adapted to be communicated with the second liquid containing chamber.

According to some alternative embodiments of the utility model, the second drive mechanism comprises: the second piston is in threaded fit with the screw rod; and the second driving motor is in transmission connection with the screw rod and is used for driving the screw rod to rotate.

In some alternative embodiments of the utility model, the second drive mechanism further comprises a gear drive mechanism comprising a first drive gear mounted to the output shaft of the second drive motor and a second drive gear mounted to the lead screw and meshed with the first drive gear.

In some alternative embodiments of the present utility model, the screw and the second driving motor are arranged along a second direction, and the second direction is perpendicular to the first direction.

In some alternative embodiments of the present utility model, the oral cleaning device further comprises: the anti-rotation structure comprises a first matching structure arranged on the intermediate bin and a second matching structure arranged on the second piston, and the second piston is limited to rotate by matching the first matching structure with the second matching structure.

In some alternative embodiments of the present utility model, the first engaging structure is an engaging protrusion formed on an inner peripheral wall of the intermediate chamber, the second engaging structure is an engaging groove formed on an outer peripheral wall of the second piston, the engaging protrusion abuts an inner wall of the engaging groove in a circumferential direction of the second piston, and an extending length of the engaging groove in the first direction is not less than a maximum stroke of the second piston.

According to some alternative embodiments of the present utility model, a position detecting rod is disposed on an outer peripheral wall of the second piston, a first position detecting switch and a second position detecting switch are disposed on an inner wall of the outer housing at intervals along a first direction, and a distance between the first position detecting switch and the second position detecting switch in the first direction is a maximum stroke of the second piston.

According to some alternative embodiments of the utility model, the second drive assembly is further configured to deliver the second prophy fluid within the second fluid containing chamber to the intermediate chamber.

In some alternative embodiments of the present utility model, the second liquid containing compartment is adapted to communicate with the intermediate compartment through a second flow passage, the second drive assembly is adapted to deliver a second prophy liquid within the second liquid containing compartment to the intermediate compartment through the second flow passage, and the oral cleaning device further comprises a second control valve for opening and closing the second flow passage.

In some alternative embodiments of the utility model, the second control valve is a one-way valve and the second control valve is one-way conductive in a direction from the second liquid containing chamber to the intermediate chamber.

According to some embodiments of the utility model, the second liquid containing chamber and the intermediate chamber are arranged along a first direction, the mixing chamber and the intermediate chamber are arranged along a second direction, the mixing chamber is positioned at one end of the intermediate chamber adjacent to the second liquid containing chamber, and the second direction is perpendicular to the first direction.

According to some embodiments of the utility model, the mixing chamber and the first liquid containing compartment are adapted to communicate through a third flow passage, the first drive assembly is adapted to deliver the first prophy fluid within the first liquid containing compartment to the mixing chamber through the third flow passage, the oral cleaning device further comprises a third control valve for opening and closing the third flow passage; the third control valve is a one-way valve and is in one-way conduction in the direction from the first liquid accommodating bin to the mixing cavity.

According to some embodiments of the utility model, the mixing chamber is adapted to communicate with the first liquid containing chamber through a third flow channel, the first driving component is configured to convey the first dental cleaning solution in the first liquid containing chamber to the mixing chamber through the third flow channel, a capacitance sensor is disposed in the third flow channel, the capacitance sensor is configured to detect whether the first dental cleaning solution is in the third flow channel, and the capacitance sensor is electrically connected with the first driving component.

According to some embodiments of the utility model, the first liquid containing chamber comprises a first containing chamber portion and a second containing chamber portion, and the second containing chamber portion, the first driving assembly, the second liquid containing chamber, the intermediate chamber and the mixing chamber are all located on the same side of the first containing chamber portion along the first direction.

According to some alternative embodiments of the utility model, the first drive assembly and the second drive assembly are both located on the same side of the second housing compartment along a second direction, the second direction being perpendicular to the first direction.

According to some embodiments of the utility model, the oral cleaning device further comprises: the second tooth cleaning liquid is stored in the solution bag, and the solution bag is detachably arranged in the second liquid containing bin; wherein the solution package is adapted to communicate with the intermediate bin; alternatively, the mouthwash in the solution package may flow into the second liquid receiving bin when the solution package is placed in the second liquid receiving bin.

According to some embodiments of the utility model, an oral cleaning device comprises: the nozzle is arranged on the shell and at least partially positioned outside the shell, a liquid outlet channel communicated with the mixing cavity is arranged in the nozzle, and the first driving assembly is also used for conveying liquid in the mixing cavity into the liquid outlet channel and spraying out through a nozzle opening of the nozzle.

According to some alternative embodiments of the present utility model, the oral cleaning device further comprises a transition chamber, the first drive assembly comprising a first drive mechanism and a first piston, at least part of the first piston being located within the transition chamber and defining a transition chamber with an inner wall of the transition chamber, the transition chamber being adapted to communicate the mixing chamber with the outlet channel, the first drive mechanism being connected to the first piston for driving the first piston to move such that the volume of the transition chamber is variable.

According to some alternative embodiments of the present utility model, the mixing chamber and the transition chamber are adapted to communicate through a fourth flow passage, the oral cleaning device further comprising a fourth control valve for opening and closing the fourth flow passage; the fourth control valve is a one-way valve and is in one-way conduction in the direction from the mixing cavity to the transition cavity.

In some alternative embodiments of the present utility model, the transition chamber and the outlet channel are adapted to communicate through a fifth flow channel, the oral cleaning device further comprising a fifth control valve for opening and closing the fifth flow channel; the fifth control valve is a one-way valve, and is in one-way conduction in the direction from the transition cavity to the liquid outlet channel.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

fig. 1 is a cross-sectional view of an oral cleaning device according to some embodiments of the present utility model;

FIG. 2 is an enlarged view of a portion of the structure of the drawing;

fig. 3 is an enlarged view at a in fig. 2.

Reference numerals:

100. an oral cleaning device;

1. a housing; 11. a first liquid storage compartment; 111. a first housing compartment; 112. a second housing compartment; 12. a second liquid storage compartment; 13. a mixing chamber; 130. a capacitive sensor; 14. a middle bin; 140. a second liquid temporary storage chamber; 15. a transition bin; 150. a transition chamber; 16. a first position detection switch; 17. a second position detection switch;

2. A first drive assembly; 21. a first driving mechanism; 211. a first driving motor; 212. a transmission member; 213. a connecting piece; 214. an eccentric column; 215. a mating hole; 22. a first piston;

3. a second drive assembly; 31. a second driving mechanism; 311. a screw rod; 312. a second driving motor; 32. a gear transmission mechanism; 321. a first transmission gear; 322. a second transmission gear; 33. a second piston; 34. a position detecting lever;

41. a first flow passage; 411. a first control valve; 412. a first elastic restoring member; 413. a communication port; 42. a second flow passage; 421. a second control valve; 422. a second elastic restoring member; 43. a third flow passage; 44. a fourth flow passage; 441. a fourth control valve; 45. a fifth flow passage; 451. a fifth control valve; 452. a fifth elastic restoring member;

5. an anti-rotation structure; 51. fitting the protrusion;

6. a solution bag; 61. a locking groove; 62. a fourth elastic restoring member; 63. a third piston; 64. a storage cavity; 65. a supplementing cavity;

7. a nozzle; 70. a liquid outlet channel;

8. a locking mechanism; 80. a locking member; 81. a bolt; 811. a mounting end; 812. a locking end; 82. a button; 83. a moving groove; 84. and a third elastic restoring member.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

An oral cleaning device 100 according to an embodiment of the present utility model is described below with reference to fig. 1-3.

Referring to fig. 1 and 2, an oral cleaning device 100 according to an embodiment of the present utility model includes: the housing 1, the first driving assembly 2 and the second driving assembly 3 are provided with a first liquid accommodating bin 11 and a second liquid accommodating bin 12 in the housing 1, and the first liquid accommodating bin 11 and the second liquid accommodating bin 12 are mutually separated. The first liquid accommodating bin 11 is used for accommodating first tooth cleaning liquid, the first tooth cleaning liquid can be water, the second liquid accommodating bin 12 is used for accommodating second tooth cleaning liquid, the second tooth cleaning liquid can be mouthwash or other functional solvents with whitening, sterilizing and other functions, so that a user can care and care the oral cavity and teeth while washing the teeth, and for example, the first tooth cleaning liquid can be mouthwash.

Referring to fig. 2, the shell 1 is further provided with a mixing cavity 13 and an intermediate bin 14, the mixing cavity 13 is suitable for communicating with the first liquid containing bin 11, and the first tooth cleaning liquid in the first liquid containing bin 11 can enter the mixing cavity 13; the intermediate bin 14 is adapted to communicate with the second liquid receiving bin 12, the intermediate bin 14 is adapted to communicate with the mixing chamber 13, the second dental cleaning solution in the second liquid receiving bin 12 may enter the intermediate bin 14, and the second dental cleaning solution in the intermediate bin 14 may enter the mixing chamber 13. Thus, the first and second dental cleaning solutions in the mixing chamber 13 can be mixed together, and the first dental cleaning solution can dilute the second dental cleaning solution.

Further, the second liquid accommodating bin 12 and the intermediate bin 14 are arranged along the first direction, so that the communication between the intermediate bin 14 and the second liquid accommodating bin 12 is convenient; the mixing cavity 13 and the intermediate bin 14 are arranged along a second direction, the mixing cavity 13 is positioned at one end of the intermediate bin 14 adjacent to the second liquid accommodating bin 12, communication between the mixing cavity 13 and the intermediate bin 14 and communication between the intermediate bin 14 and the second liquid accommodating bin 12 are conveniently achieved, and the second direction is perpendicular to the first direction. For example, referring to fig. 1, the first direction may be an up-down direction, and the second direction may be a left-right direction. The arrangement mode among the second liquid accommodating bin 12, the intermediate bin 14 and the mixing cavity 13 ensures that the whole structure of the oral cavity cleaning device 100 is compact, is beneficial to the miniaturization of the oral cavity cleaning device 100 and is more convenient to carry.

Referring to fig. 1 and 2, the first driving assembly 2 is disposed in the housing 1, and the second driving assembly 3 may also be disposed in the housing 1, where the first driving assembly 2 is used to convey the first dental cleaning solution in the first liquid containing chamber 11 to the mixing chamber 13; the second dental cleaning solution in the second liquid containing compartment 12 is adapted to flow into the intermediate compartment 14 and the second drive assembly 3 is adapted to deliver the second dental cleaning solution in the intermediate compartment 14 to the mixing chamber 13. For example, the second drive assembly 3 may also be used to deliver the second prophy liquid within the second liquid containing chamber 12 to the intermediate chamber 14.

When the first driving component 2 works, the first liquid accommodating bin 11 can be communicated with the mixing cavity 13, and the first tooth cleaning liquid in the first liquid accommodating bin 11 can flow into the mixing cavity 13; when the first drive assembly 2 is not in operation, the first liquid receiving chamber 11 may be isolated from the mixing chamber 13 (i.e., the first liquid receiving chamber 11 may not be in communication with the mixing chamber 13).

For example, the second driving assembly 3 may have two working states, when the second driving assembly 3 is in the first working state, the second liquid containing chamber 12 may be communicated with the intermediate chamber 14, the second tooth cleaning solution in the second liquid containing chamber 12 may flow into the intermediate chamber 14, the intermediate chamber 14 may store the second tooth cleaning solution, and at this time, the intermediate chamber 14 may be blocked from the mixing chamber 13 (i.e., the intermediate chamber 14 may not be communicated with the mixing chamber 13); and when the second drive assembly 3 is in the first operating state, the first drive assembly 2 is not operating. When the second driving assembly 3 is in the second working state, the second liquid containing chamber 12 may be separated from the intermediate chamber 14 (i.e., the second liquid containing chamber 12 is not communicated with the intermediate chamber 14), the intermediate chamber 14 may be communicated with the mixing chamber 13, and the second tooth cleaning liquid stored in the intermediate chamber 14 may flow into the mixing chamber 13.

The mixed first and second dental cleaning solutions flow out from the outlet of the mixing chamber 13, i.e. the diluted second dental cleaning solution flows out from the mixing chamber 13. In general, the first dental cleaning solution may be water, and since the ratio of the first dental cleaning solution is generally greater than the ratio of the second dental cleaning solution in use, the amount of the first dental cleaning solution delivered into the mixing chamber 13 per unit time may be greater than the amount of the second dental cleaning solution, and the speed at which the first dental cleaning solution and the second dental cleaning solution flow into the mixing chamber 13, and thus the amount of the first dental cleaning solution and the second dental cleaning solution delivered into the mixing chamber 13 per unit time, may be controlled by controlling the first driving assembly 2 and the second driving assembly 3, respectively (e.g., controlling the rotational speeds of the output shafts of the driving motors of the first driving assembly 2 and the second driving assembly 3).

In the related art, the second component in the accommodating bin flows into the mixing bin by means of gravity through puncturing the accommodating bin for the second component in the accommodating bin, the flow speed of the second component is difficult to control, the difference between the front speed and the rear speed of the second component is large, the concentration of the second component in the front mixing bin is high, and the concentration of the second component in the rear mixing bin is low, so that the concentration of the diluted second component is seriously uneven in the process of tooth rinsing.

According to the oral cavity cleaning device 100, the first tooth cleaning liquid in the first liquid accommodating bin 11 enters the mixing cavity 13 under the drive of the first driving component 2, and the second tooth cleaning liquid in the intermediate bin 14 enters the mixing cavity 13 under the drive of the second driving component 3, so that the second tooth cleaning liquid does not need to be manually added into the first tooth cleaning liquid for dilution, the operation is more convenient, and the second tooth cleaning liquid is not easy to spill to the outside; the first and second dental cleaning solutions can be sufficiently mixed in the mixing chamber 13, which helps to promote uniformity of the diluted second dental cleaning solution concentration.

In addition, the first tooth cleaning solution and the second tooth cleaning solution respectively enter the mixing cavity 13 under the driving of different driving components, and the first driving component 2 and the second driving component 3 can be controlled independently, so that the speed of the first tooth cleaning solution and the second tooth cleaning solution flowing into the mixing cavity 13 can be controlled respectively, and the proportion of the first tooth cleaning solution and the second tooth cleaning solution flowing into the mixing cavity 13 in unit time can be controlled. For example, the ratio of the first dental cleaning solution to the second dental cleaning solution entering the mixing chamber 13 in a unit time may be kept constant, and the speed of the first dental cleaning solution and the second dental cleaning solution flowing into the mixing chamber 13 may be kept constant during the process before and after oral cleaning, so that the first dental cleaning solution and the second dental cleaning solution are mixed in approximately the same ratio (for example, a preset ratio) during the process before and after oral cleaning, thereby effectively reducing the concentration difference of the diluted second dental cleaning solution during the process before and after oral cleaning, keeping the concentration of the diluted second dental cleaning solution consistent during the process before and after oral cleaning, and improving the concentration stability of the liquid discharged from the oral cleaning device 100.

According to the oral cavity cleaning device 100 of the embodiment of the utility model, the first driving component 2 drives the first tooth cleaning solution in the first liquid accommodating bin 11 to enter the mixing cavity 13, the second driving component 3 drives the second tooth cleaning solution in the intermediate bin 14 to enter the mixing cavity 13, and the first tooth cleaning solution and the second tooth cleaning solution can be fully mixed in the mixing cavity 13; and the first drive assembly 2 and the second drive assembly 3 can be controlled independently, so that the speed of the first tooth cleaning liquid and the second tooth cleaning liquid in the mixing cavity 13 can be controlled, the proportion of the first tooth cleaning liquid and the second tooth cleaning liquid which enter the mixing cavity 13 in unit time can be controlled, and the concentration of the first tooth cleaning liquid and the concentration of the second tooth cleaning liquid in the mixing liquid can be controlled, for example, the concentration of the diluted second tooth cleaning liquid is kept consistent before and after oral cleaning, and different use requirements of users can be met.

Referring to fig. 3, according to some embodiments of the present utility model, the mixing chamber 13 and the intermediate chamber 14 are adapted to communicate through the first flow channel 41, the second drive assembly 3 is adapted to deliver the second prophy liquid within the intermediate chamber 14 to the mixing chamber 13 through the first flow channel 41, and the oral cleaning device 100 further comprises a first control valve 411, the first control valve 411 being adapted to open and close the first flow channel 41. By arranging the first control valve 411, the communication or the separation between the mixing cavity 13 and the intermediate bin 14 can be controlled, when the first flow channel 41 is opened by the first control valve 411, the mixing cavity 13 can be communicated with the intermediate bin 14, and the second tooth cleaning liquid in the intermediate bin 14 is conveyed to the mixing cavity 13 through the first flow channel 41; when the first control valve 411 closes the first flow passage 41, the mixing chamber 13 may be blocked from the intermediate chamber 14.

According to some alternative embodiments of the present utility model, the first control valve 411 is a one-way valve, and the first control valve 411 is one-way conductive in a direction from the intermediate chamber 14 to the mixing chamber 13. By providing the first control valve 411, the second prophy liquid can be ensured to flow unidirectionally in the first flow passage 41, specifically, the liquid in the first flow passage 41 can be ensured to flow unidirectionally in the direction from the intermediate chamber 14 to the mixing chamber 13, preventing the liquid in the mixing chamber 13 from flowing back into the intermediate chamber 14.

For example, the oral cleaning device 100 further comprises a first elastic restoring member 412, for example, the first elastic restoring member 412 may be a spring, one end of the first elastic restoring member 412 is connected to the inner wall of the mixing chamber 13, the other end of the first elastic restoring member 412 is connected to the first control valve 411, the first elastic restoring member 412 is adapted to push the first control valve 411 to move, and the elastic force of the first elastic restoring member 412 may press the first control valve 411 and cause the first control valve 411 to close the first flow channel 41. When the first control valve 411 closes the first flow channel 41, the pressing force of the first elastic restoring member 412 on the first control valve 411 may be F1, at the first control valve 411, the flow area of the first flow channel 41 may be A1, the atmospheric pressure may be P0, and then F1, A1, and P0 may satisfy: f1 > P0 A1, preferably F1 > 1.3P 0 A1.

Referring to fig. 2, according to some alternative embodiments of the present utility model, the second driving assembly 3 includes a second driving mechanism 31 and a second piston 33, the second driving mechanism 31 is in driving connection with the second piston 33, the second driving mechanism 31 is used for driving the second piston 33 to be movable along the first direction, at least part of the second piston 33 is located in the intermediate chamber 14, a second liquid temporary storage chamber 140 with a variable volume is defined between the second piston 33 and the inner wall of the intermediate chamber 14 together, for example, a second sealing member is arranged between the second piston 33 and the inner wall of the intermediate chamber 14, so as to seal an assembly gap between the second piston 33 and the inner wall of the intermediate chamber 14, and prevent liquid in the second liquid temporary storage chamber 140 from leaking out of the gap.

Referring to fig. 2 and 3, the second liquid temporary storage chamber 140 is adapted to communicate with the mixing chamber 13 through the first flow channel 41, the second liquid temporary storage chamber 140 is adapted to communicate with the second liquid accommodating chamber 12, the first tooth cleaning liquid in the second liquid accommodating chamber 12 may flow into the second liquid temporary storage chamber 140, and the first tooth cleaning liquid in the second liquid temporary storage chamber 140 may flow into the mixing chamber 13 through the first flow channel 41.

When the second driving mechanism 31 drives the second piston 33 to move along the first direction, the volume of the second liquid temporary storage cavity 140 changes, for example, the first direction may be the up-down direction, when the second piston 33 moves downward, the volume of the second liquid temporary storage cavity 140 gradually increases, the second liquid temporary storage cavity 140 is suitable for being communicated with the second liquid accommodating bin 12, and the second tooth cleaning liquid in the second liquid accommodating bin 12 may enter the second liquid temporary storage cavity 140; when the second piston 33 moves upwards, the volume of the second liquid temporary storage chamber 140 gradually decreases, and the pressure of the second liquid temporary storage chamber 140 increases, so that the first control valve 411 can be pushed to open the first flow channel 41, so that the second liquid temporary storage chamber 140 is communicated with the intermediate bin 14, and the second tooth cleaning liquid in the second liquid temporary storage chamber 140 can enter the mixing chamber 13 through the first flow channel 41. For example, the pressure of the second liquid temporary storage chamber 140 may be F0, and when F0 > F1 is satisfied, the pressure of the second liquid temporary storage chamber 140 pushes the first control valve 411 to further compress the first elastic restoring member 412, so as to enable the first control valve 411 to open the first flow channel 41.

For example, when the second driving assembly 3 is in the first working state, the second driving mechanism 31 drives the second piston 33 to move downward, and the second liquid accommodating chamber 12 is communicated with the second liquid temporary storage chamber 140; when the second driving assembly 3 is in the second working state, the second driving mechanism 31 drives the second piston 33 to move upwards, and the second liquid temporary storage cavity 140 is communicated with the mixing cavity 13.

The second piston 33 is driven to move by the second driving mechanism 31, so that the volume of the second liquid temporary storage cavity 140 can be changed, and the pressure in the second liquid temporary storage cavity 140 can be changed, thereby realizing that the second tooth cleaning liquid in the second liquid temporary storage cavity 140 flows into the mixing cavity 13 through the first flow channel 41.

For example, the intermediate chamber 14 and the mixing chamber 13 have a communication port 413, the communication port 413 constituting at least part of the first flow passage 41, and when the second piston 33 moves to the bottom dead center, a distance between an upper end of the second piston 33 and the communication port 413 is L. Additionally, the thrust of the second piston 33 may be Ft, the density of the second dental cleaning solution may be ρ, the gravitational acceleration may be g, and the cross-sectional area of the second liquid temporary storage chamber 140 may be Am, where Ft, F1, ρ, g, L, and Am satisfy: ft > f1+ρg L Am, preferably Ft > 1.5F 1.

Referring to fig. 2, according to some alternative embodiments of the present utility model, the second driving mechanism 31 includes: the screw rod 311 and the second driving motor 312, and the second piston 33 is in threaded fit with the screw rod 311; the second driving motor 312 is drivingly connected to the screw for driving the screw 311 to rotate. Because the second piston 33 is in threaded fit with the screw rod 311, when the screw rod 311 is driven to rotate by the second driving motor 312, the second piston 33 can be driven to move, and the transmission structure is simpler and the operation is smoother.

Referring to fig. 2, in some alternative embodiments of the present utility model, the second driving mechanism 31 further includes a gear transmission mechanism 32, the gear transmission mechanism 32 includes a first transmission gear 321 and a second transmission gear 322, the first transmission gear 321 is mounted on an output shaft of the second driving motor 312, and the second transmission gear 322 is mounted on the screw 311 and is engaged with the first transmission gear 321. The output shaft of the second driving motor 312 rotates to drive the first transmission gear 321 to rotate; since the second transmission gear 322 is meshed with the first transmission gear 321, the first transmission gear 321 can drive the second transmission gear 322 to rotate; since the second transmission gear 322 is installed on the screw rod 311, the second transmission gear 322 can drive the screw rod 311 to rotate, thereby realizing the driving of the second piston 33.

Referring to fig. 1 and 2, in some alternative embodiments of the present utility model, the screw 311 and the second driving motor 312 are arranged in a second direction perpendicular to the first direction, so that the overall structure of the oral cleaning device 100 is compact, which is advantageous for miniaturization of the oral cleaning device 100.

Referring to fig. 2, in some alternative embodiments of the present utility model, the oral cavity cleaning device 100 further includes an anti-rotation structure 5, the anti-rotation structure 5 includes a first matching structure and a second matching structure, the first matching structure is provided on the intermediate bin 14, the second matching structure is provided on the second piston 33, the second piston 33 can be limited to rotate by matching the first matching structure with the second matching structure, and the force of the second driving motor 312 driving the screw rod to rotate can more effectively drive the second piston 33 to move along the first direction, so that the utilization rate of the driving force can be improved.

In some alternative embodiments of the present utility model, the first engaging structure is an engaging protrusion 51 formed on an inner peripheral wall of the intermediate chamber 14, and the second engaging structure is an engaging groove formed on an outer peripheral wall of the second piston 33, and the engaging protrusion 51 abuts against an inner wall of the engaging groove in the circumferential direction of the second piston 33 to restrict rotation of the second piston 33. The length of the mating groove extending in the first direction is not smaller than the maximum stroke of the second piston 33, for example, the length of the mating groove extending in the first direction may be larger than the maximum stroke of the second piston 33, and the length of the mating groove extending in the first direction may be equal to the maximum stroke of the second piston 33.

By the extension length of the fitting groove in the first direction being not smaller than the maximum stroke of the second piston 33, it is ensured that the stroke of the second piston 33 in the first direction is not affected when the fitting protrusion 51 is fitted with the fitting groove, thereby ensuring that the second piston 33 can normally move in the first direction.

Referring to fig. 2, according to some alternative embodiments of the present utility model, a position detecting rod 34 is provided on an outer circumferential wall of the second piston 33, a first position detecting switch 16 and a second position detecting switch 17 are provided on an inner wall of the housing 1, the first position detecting switch 16 and the second position detecting switch 17 are spaced apart along a first direction, and a distance between the first position detecting switch 16 and the second position detecting switch 17 in the first direction is a maximum stroke of the second piston 33.

For example, the position detection lever 34 may be in contact with the first position detection switch 16 when the second piston 33 is moved to the first position, and the position detection lever 34 may be in contact with the second position detection switch 17 when the second piston 33 is moved to the second position. The oral cleaning device 100 includes a control unit (not shown in the drawings) to which at least one of the position detecting lever 34 and the first position detecting switch 16 may be electrically connected; at least one of the position detection lever 34 and the second position detection switch 17 may be electrically connected to the control unit; the control unit may be electrically connected to the second driving motor 312.

For example, referring to fig. 2, the first position detecting switch 16 is located at an upper side of the second position detecting switch 17, and the position detecting lever 34 may be provided at a lower end of the second piston 33. When the second piston 33 moves upward to the first position, the position detecting lever 34 is in contact with the first position detecting switch 16, and at least one of the position detecting lever 34 or the first position detecting switch 16 may transmit an electric signal to the control unit, which controls the second driving motor 312 to stop driving the second piston 33 to move upward. When the second piston 33 moves downward to the second position, the position detecting lever 34 contacts the second position detecting switch 17, and at least one of the position detecting lever 34 or the second position detecting switch 17 may transmit an electric signal to the control unit, and the control unit controls the second driving motor 312 to stop driving the second piston 33 to move downward. Further, when the second piston 33 is not located at the first position, the position detecting rod 34 is not in contact with the first position detecting switch 16, in which case the second liquid temporary storage chamber 140 may be considered to have the second dental cleaning liquid, and the second driving motor 312 may drive the second piston 33 to move upward.

By providing the first position detection switch 16 and the second position detection switch 17, the movement stroke of the second piston 33 in the first direction can be limited, and the movement of the second piston 33 beyond its maximum stroke is prevented.

According to some alternative embodiments of the present utility model, the second driving component 3 is used to convey the second dental cleaning solution in the intermediate chamber 14 to the mixing chamber 13 through the first flow channel 41, and the second driving component 3 is further used to convey the second dental cleaning solution in the second liquid containing chamber 12 to the intermediate chamber 14, which is beneficial to saving the number of driving components. For example, the second driving assembly 3 has two working states, when the second driving assembly 3 is in the first working state, the second driving mechanism 31 drives the second piston 33 to move downwards, the second liquid accommodating chamber 12 is communicated with the second liquid temporary storage chamber 140, and the second tooth cleaning liquid in the second liquid accommodating chamber 12 enters the intermediate chamber 14; when the second driving assembly 3 is in the second working state, the second driving mechanism 31 drives the second piston 33 to move upwards, the second liquid temporary storage cavity 140 is communicated with the mixing cavity 13, and the second tooth cleaning liquid in the second liquid temporary storage cavity 140 enters the mixing cavity 13. In the two working states, the rotation direction of the output shaft of the second driving motor 312 is opposite to the rotation direction of the second driving assembly 3.

Referring to fig. 3, in some alternative embodiments of the present utility model, the second liquid containing chamber 12 and the intermediate chamber 14 are adapted to communicate through a second fluid passage 42, the second drive assembly 3 is adapted to deliver the second prophy liquid within the second liquid containing chamber 12 to the intermediate chamber 14 through the second fluid passage 42, and the oral cleaning device 100 further comprises a second control valve 421, the second control valve 421 being adapted to open and close the second fluid passage 42. By providing the second control valve 421, control of communication or blocking between the second liquid containing chamber 12 and the intermediate chamber 14 can be achieved.

In some alternative embodiments of the present utility model, the second control valve 421 is a one-way valve, and the second control valve 421 is in one-way communication in a direction from the second liquid-receiving compartment 12 to the intermediate compartment 14. By providing the second control valve 421, the second prophy liquid can be ensured to flow unidirectionally in the second flow passage 42, specifically, the liquid in the second flow passage 42 can be ensured to flow unidirectionally in the direction from the second liquid accommodating chamber 12 to the intermediate chamber 14, preventing the liquid in the intermediate chamber 14 from flowing back into the second liquid accommodating chamber 12.

For example, referring to fig. 3, the oral cleaning device 100 further includes a second elastic restoring member 422, for example, the second elastic restoring member 422 may be a spring, one end of the second elastic restoring member 422 is connected to the inner wall of the intermediate chamber 14, the other end of the second elastic restoring member 422 is connected to the second control valve 421, the second elastic restoring member 422 is adapted to push the second control valve 421 to move, and the elastic force of the second elastic restoring member 422 may press the second control valve 421 and cause the second control valve 421 to close the second flow channel 42. When the second control valve 421 closes the second flow passage 42, the pressing force of the second elastic restoring member 422 to the second control valve 421 may be F2, and at the second control valve 421, the flow area of the second flow passage 42 may be A2, and the atmospheric pressure may be P0. The oral cleaning device 100 further includes a solution bag 6, the solution bag 6 has a third piston 63 capable of sliding up and down, the sectional area of the solution bag 6 may be A0, and the sliding resistance of the third piston 63 is F3, so that F2, A0, F3 and P0 may satisfy: f2 < (P0-F3/A0) A2, preferably F2 < (1/3) (P0-F3/A0) A2.

Referring to fig. 3, according to some embodiments of the present utility model, the mixing chamber 13 is adapted to communicate with the first liquid containing compartment 11 through a third flow channel 43, the first drive assembly 2 is adapted to deliver the first prophy fluid within the first liquid containing compartment 11 to the mixing chamber 13 through the third flow channel 43, and the oral cleaning device 100 further comprises a third control valve for opening and closing the third flow channel 43; the third control valve is a one-way valve, and the third control valve is one-way conducted in the direction from the first liquid containing chamber 11 to the mixing chamber 13. By providing the third control valve, it is possible to realize control of communication or blocking between the first liquid accommodating chamber 11 and the mixing chamber 13, and it is possible to ensure unidirectional flow of the first prophy liquid in the third flow passage 43, specifically, it is possible to ensure unidirectional flow of the liquid in the third flow passage 43 in the direction from the first liquid accommodating chamber 11 to the mixing chamber 13, preventing backflow of the liquid in the mixing chamber 13 into the first liquid accommodating chamber 11.

Referring to fig. 3, according to some embodiments of the present utility model, the mixing chamber 13 is adapted to communicate with the first liquid containing chamber 11 through a third flow channel 43, the first driving assembly 2 is configured to deliver the first dental cleaning liquid in the first liquid containing chamber 11 to the mixing chamber 13 through the third flow channel 43, a capacitance sensor 130 is disposed in the third flow channel 43, the capacitance sensor 130 is configured to detect whether the first dental cleaning liquid is present in the third flow channel 43, and the capacitance sensor 130 is electrically connected to the first driving assembly 2.

When the first driving unit 2 is operated, for example, when the capacitance detected by the capacitance sensor 130 is different from the capacitance of the first cleaning liquid, for example, when the capacitance detected by the capacitance sensor 130 is equal to the capacitance detected by the air, it means that the third flow channel 43 does not have the first cleaning liquid, and therefore, the first liquid accommodating chamber 11 does not have the first cleaning liquid, the capacitance sensor 130 can transmit a signal to the first driving unit 2, and the first driving unit 2 can stop operation. When the capacitance detected by the capacitance sensor 130 is the same as the capacitance of the first dental cleaning liquid, it means that the first dental cleaning liquid is provided in the third flow channel 43, and thus, the first dental cleaning liquid is also provided in the first liquid accommodating chamber 11, the capacitance sensor 130 can transmit a signal to the first driving component 2, and the first driving component 2 can continue to operate.

Through setting up capacitive sensor 130, can accurately detect whether there is first clean tooth liquid in the third flow path 43 to can judge whether there is first clean tooth liquid or the liquid level is too low in the first liquid acceping bin 11, unable normal use, and can give first drive assembly 2 with the signal transmission that detects, control first drive assembly 2 stop work, can prevent not having first clean tooth liquid to carry when mixing chamber 13, result in the concentration of second clean tooth liquid in the mixing chamber 13 too high, can avoid in the mixing chamber 13 the direct oral cavity that gets into of user of high concentration second clean tooth liquid like this. On the other hand, noise due to suction occurring in the third flow path 43 can be avoided.

According to other embodiments of the present utility model, referring to fig. 3, a capacitive sensor 130 may be provided on a wall of the mixing chamber 13, the capacitive sensor 130 is electrically connected to the second driving assembly 3, and the capacitive sensor 130 is configured to detect whether the first dental cleaning solution is present in the mixing chamber 13, and transmit a detected signal to the first driving assembly 2 to control the first driving assembly 2 to operate. Since the proportion of the first dental cleaning liquid is usually very small, the amount of the first dental cleaning liquid in the mixing cavity 13 is very small, when the mixing cavity 13 does not contain the first dental cleaning liquid, the capacitance sensor 130 can be considered to detect the capacitance of air, the capacitance sensor 130 can transmit the detected signal to the first driving component 2, and the first driving component 2 stops working.

Referring to fig. 1, according to some embodiments of the present utility model, the first liquid containing chamber 11 includes a first containing chamber 111 and a second containing chamber 112, and the second containing chamber 112, the first driving assembly 2, the second driving assembly 3, the second liquid containing chamber 12, the intermediate chamber 14 and the mixing chamber 13 are all located on the same side of the first containing chamber 111 along the first direction, so that the overall structure of the oral cavity cleaning device 100 is compact, which is beneficial to miniaturizing the oral cavity cleaning device 100 and more convenient to carry.

Referring to fig. 1, according to some alternative embodiments of the present utility model, the first driving assembly 2 and the second driving assembly 3 are both located on the same side of the second housing portion 112 along the second direction, and the second direction is perpendicular to the first direction, so that the overall structure of the oral cleaning device 100 is compact, which is beneficial to miniaturizing the oral cleaning device 100 and more convenient to carry.

Referring to fig. 1 and 2, according to some embodiments of the present utility model, the oral cleaning device 100 further includes a solution pack 6, wherein the second dental cleaning solution is stored in the solution pack 6, and the solution pack 6 is detachably disposed in the second liquid storage compartment 12, so as to facilitate the replenishment of the solution or the replacement of the solution pack 6. Wherein the solution bag 6 is adapted to communicate with the intermediate bin 14, and the second prophy liquid in the solution bag 6 may flow into the intermediate bin 14, e.g. with a third seal between the opening of the solution bag 6 and the inner wall of the intermediate bin 14 for sealing the assembly gap between the solution bag 6 and the inner wall of the intermediate bin 14, preventing the second prophy liquid from leaking out of the gap; alternatively, when the solution package 6 is placed in the second liquid receiving chamber 12, the mouthwash in the solution package 6 may flow into the second liquid receiving chamber 12 and the second dental cleaning solution in the second liquid receiving chamber 12 may flow into the intermediate chamber 14.

For example, referring to fig. 2 and 3, the solution package 6 may include an envelope and a third piston 63. The third piston 63 is movably disposed in the enclosure, a storage cavity 64 and a filling cavity 65 are defined between the third piston 63 and the enclosure, the storage cavity 64 is used for storing the second tooth cleaning solution, the storage cavity 64 and the filling cavity 65 are located at two opposite sides of the third piston 63 along the moving direction of the third piston 63, for example, the third piston 63 is movable along the up-down direction, the filling cavity 65 and the storage cavity 64 are located at two upper and lower sides of the third piston 63, for example, the filling cavity 65 is located at the upper side of the third piston 63, the storage cavity 64 is located at the upper side of the third piston 63, and a filling port for communicating the filling cavity 65 with the outside atmosphere is formed on the wall of the filling cavity 65. The third piston 63 may be fitted into the enclosure with an interference fit such that the vent chamber 65 and the storage chamber 64 remain isolated from each other at all times.

For example, in the process that the second piston 33 moves downward to suck the second prophy liquid in the solution package 6, when the second prophy liquid in the solution package 6 is sucked out, the third piston 63 moves to the bottom side of the storage chamber 64, and the second piston 33 continues to suck, so that the negative pressure in the second liquid temporary storage chamber 140 increases, in which case the load of the second driving motor 312 gradually increases. When the load of the second drive motor 312 increases beyond a preset threshold, the second drive motor 312 stops operating, and the solution needs to be replenished or the solution package 6 needs to be replaced.

For example, referring to fig. 3, according to some embodiments of the present utility model, the oral cleaning device 100 further comprises a locking mechanism 8, the locking mechanism 8 being configured to lock the solution cartridge 6 within the second liquid containing compartment 12 after the solution cartridge 6 is placed within the second liquid containing compartment 12. A locking mechanism 8 is provided within the housing 1, the locking mechanism 8 may comprise a locking member 80, the locking member 80 being movable between a locked position and an unlocked position. The locking piece 80 is provided with a lock tongue 81, a lock groove 61 is formed on the outer wall of the solution bag 6, and when the locking piece 80 is positioned at the locking position, the lock tongue 81 of the locking piece 80 stretches into the lock groove 61 to lock the solution bag 6 in the second liquid containing bin 12; when the locking member 80 is in the unlocking position, the lock tongue 81 of the locking member 80 is disengaged from the lock groove 61 so that the solution package 6 can be taken out from the second liquid housing compartment 12. For example, when the second dental cleaning solution in the solution cartridge 6 is used up and the solution cartridge 6 is taken out of the second liquid storage compartment 12, the locking member 80 may be moved to the unlocking position, and the tongue 81 of the locking member 80 may be disengaged from the locking groove 61, and at this time, the solution cartridge 6 may be taken out of the second liquid storage compartment 12.

For example, referring to fig. 3, the lock 80 further includes a button 82, the button 82 being movably disposed through the wall of the housing 1 between a locked position and an unlocked position, and the button 82 being movable by a user pressing the button 82. The push button 82 is formed with a movement groove 83, and the movement groove 83 is inclined and extended in a direction from top to bottom toward a direction adjacent to the second liquid storage chamber 12, and both ends of the lock tongue 81 are respectively provided with a mounting end 811 and a locking end 812, and the mounting end 811 is movably provided in the movement groove 83. When the button 82 is moved, the lock tongue 81 is moved between a locked position in which the locking end 812 is inserted into the lock groove 61 and an unlocked position in which the locking end 812 is disengaged from the lock groove 61.

For example, referring to fig. 3, the oral cleaning device 100 is further provided with a third elastic restoring member 84 for restoring the locking member 80, and an upper end of the second elastic restoring member 422 may be connected with a lower end of the button 82; a fourth elastic restoring member 62 is connected to the lower side of the solution package 6. When it is desired to place the solution package 6 in the second liquid containing compartment 12, the button 82 may be pressed so that the locking member 80 moves to the unlocked position, at which time the solution package 6 may be placed in the second liquid containing compartment 12, and after the solution package 6 is placed in place, the button 82 may be released, at which time the second resilient return member 422 may actuate the button 82 to move so that the locking member 80 moves to the locked position to lock the solution package 6 in the second liquid containing compartment 12. When the solution package 6 needs to be taken out of the second liquid accommodating chamber 12, the button 82 can be pressed to enable the locking member 80 to move to the unlocking position, so that a space can be avoided for taking out the solution package 6, and at this time, the fourth elastic reset member 62 can drive the solution package 6 to move, and the solution package 6 can be taken out of the second liquid accommodating chamber 12. After the solution package 6 is removed, the button 82 may be released and the third resilient return member 84 may actuate the button 82 to move, thereby moving the locking member 80 to the locked position.

Referring to fig. 1, according to some embodiments of the utility model, an oral cleaning device 100 includes a nozzle 7, the nozzle 7 being disposed on the housing 1 and at least partially outside the housing 1, e.g., the nozzle 7 may be disposed through a wall of the housing 1 and fixed relative to the housing 1, a portion of the nozzle 7 being disposed within the housing 1, and another portion of the nozzle 7 being disposed outside the housing 1. The nozzle 7 is provided with a liquid outlet channel 70, the liquid outlet channel 70 is communicated with the mixing cavity 13, and the first driving assembly 2 is also used for conveying liquid in the mixing cavity 13 into the liquid outlet channel 70 and spraying out through the nozzle 7. Specifically, the liquid outlet channel 70 is located at the downstream side of the mixing chamber 13, and after the first dental cleaning liquid and the second dental cleaning liquid flowing into the mixing chamber 13 are mixed in the mixing chamber 13, they can pass through the liquid outlet channel 70 and finally be sprayed into the oral cavity or onto the teeth from the nozzle 7, so as to clean the oral cavity or the teeth.

Referring to fig. 2, in accordance with some alternative embodiments of the present utility model, the oral cleaning device 100 further comprises a transition chamber 15, the first drive assembly 2 comprises a first drive mechanism 21 and a first piston 22, at least a portion of the first piston 22 is positioned within the transition chamber 15 and defines a transition chamber 150 with an inner wall of the transition chamber 15, the transition chamber 150 is adapted to communicate the mixing chamber 13 with the outlet channel 70, liquid within the mixing chamber 13 (e.g., a mixture of a first dental cleaning solution and a second dental cleaning solution) may flow into the transition chamber 150, and liquid flowing into the transition chamber 150 may flow into the outlet channel 70 and be ejected through the nozzle 7. For example, a first seal is provided between the first piston 22 and the inner wall of the transition chamber 15 for sealing the assembly gap between the first piston 22 and the inner wall of the intermediate chamber 14, preventing liquid in the second liquid holding chamber 140 from leaking out of the gap.

Referring to fig. 1 and 2, the first driving mechanism 21 is connected to the first piston 22 for driving the first piston 22 to move, for example, the first driving mechanism 21 may drive the first piston 22 to move in a first direction, so that the volume of the transition chamber 150 is variable, so that the pressure in the transition chamber 150 is variable, to facilitate the liquid flowing in the mixing chamber 13 into the transition chamber 150 or the liquid flowing in the transition chamber 150 into the liquid outlet channel 70.

When the first driving mechanism 21 drives the first piston 22 to move, the volume of the transition cavity 150 changes, for example, the first direction may be the up-down direction, when the first piston 22 moves downward, the volume of the transition cavity 150 gradually increases, a negative pressure is formed in the transition cavity 150, the transition cavity 150 is communicated with the mixing cavity 13, and the liquid in the mixing cavity 13 may enter the transition cavity 150; when the first piston 22 moves upward, the volume of the transition chamber 150 becomes smaller gradually, and the pressure in the transition chamber 150 becomes larger, the transition chamber 150 communicates with the liquid outlet passage 70, and the liquid in the transition chamber 150 can enter the liquid outlet passage 70 and be ejected from the ejection opening of the nozzle 7.

Referring to fig. 3, according to some alternative embodiments of the present utility model, the mixing chamber 13 and the transition chamber 150 are adapted to communicate through the fourth flow passage 44, and the oral cleaning device 100 further comprises a fourth control valve 441 for opening and closing the fourth flow passage 44. By providing the fourth control valve 441, communication or blocking between the mixing chamber 13 and the transition chamber 150 can be realized, and when the fourth control valve 441 opens the fourth flow passage 44, the mixing chamber 13 can be communicated with the transition chamber 150, and the liquid in the mixing chamber 13 is conveyed to the transition chamber 150 through the fourth flow passage 44; when the fourth control valve 441 closes the fourth flow passage 44, the mixing chamber 13 may be blocked from the transition chamber 150.

With continued reference to fig. 3, the fourth control valve 441 is a one-way valve, for example, the fourth control valve 441 may be a film sheet one-way valve, the fourth control valve 441 being in one-way communication in the direction from the mixing chamber 13 to the transition chamber 150. By providing the fourth control valve 441, it is possible to ensure a unidirectional flow of the liquid in the fourth flow passage 44, in particular, a unidirectional flow of the liquid in the fourth flow passage 44 in the direction from the mixing chamber 13 to the transition chamber 150, preventing a backflow of the liquid in the transition chamber 150 into the mixing chamber 13.

Referring to fig. 3, in some alternative embodiments of the present utility model, the transition chamber 150 and the liquid outlet channel 70 are adapted to communicate through the fifth flow channel 45, and the oral cleaning device 100 further comprises a fifth control valve 451, the fifth control valve 451 being adapted for opening and closing the fifth flow channel 45. By providing the fifth control valve 451, communication or blocking between the liquid outlet channel 70 and the transition chamber 150 can be achieved, and when the fifth control valve 451 opens the fifth flow passage 45, the liquid outlet channel 70 can be communicated with the transition chamber 150, and the liquid in the transition chamber 150 is delivered to the liquid outlet channel 70 through the fifth flow passage 45; when the fifth control valve 451 closes the fifth flow path 45, the liquid outlet passage 70 may be blocked from the transition chamber 150.

The fifth control valve 451 is a one-way valve, and the fifth control valve 451 is in one-way communication in the direction from the transition chamber 150 to the liquid outlet channel 70. By providing the fifth control valve 451, it is possible to ensure that the liquid flows unidirectionally in the fifth flow passage 45, specifically, the liquid in the fifth flow passage 45 in the direction from the transition chamber 150 to the liquid outlet passage 70, preventing the liquid in the liquid outlet passage 70 from flowing back into the transition chamber 150.

For example, referring to fig. 3, the oral cleaning device 100 further includes a fifth elastic restoring member 452, for example, the fifth elastic restoring member 452 may be a spring, one end of the fifth elastic restoring member 452 is connected to the inner wall of the transition chamber 150, the other end of the fifth elastic restoring member 452 is connected to the fifth control valve 451, the fifth elastic restoring member 452 is adapted to push the fifth control valve 451 to move, and the elastic force of the fifth elastic restoring member 452 may press the fifth control valve 451 and cause the fifth control valve 451 to close the fifth flow channel 45. When the fifth control valve 451 closes the fifth flow channel 45, the pressing force of the fifth elastic restoring element 452 on the fifth control valve 451 may be F4, the flow area of the fifth flow channel 45 may be A4 and the atmospheric pressure may be P0 at the fifth control valve 451, and then F4, A4, and P0 may satisfy: f4 < P0 A4.

For example, the first direction may be an up-down direction, when the first driving mechanism 21 drives the first piston 22 to move downward, the volume of the transition chamber 150 gradually increases, a negative pressure is formed in the transition chamber 150, the fourth control valve 441 is used for opening the fourth flow channel 44, the transition chamber 150 is communicated with the mixing chamber 13, and the liquid in the mixing chamber 13 can enter the transition chamber 150 through the fourth flow channel 44; when the first driving mechanism 21 drives the first piston 22 to move upwards, the volume of the transition cavity 150 gradually becomes smaller, and the pressure in the transition cavity 150 becomes larger, so that the fifth control valve 451 can be pushed to open the fifth flow channel 45, so that the transition cavity 150 is communicated with the liquid outlet channel 70, and the liquid in the transition cavity 150 can enter the liquid outlet channel 70 through the fifth flow channel 45 and be ejected out through the nozzle 7. For example, the pressure in the transition chamber 150 may be F5, and when F5 > F4 is satisfied, the pressure in the transition chamber 150 pushes the fifth control valve 451 to further compress the fifth elastic restoring element 452, so as to implement that the fifth control valve 451 opens the fifth flow channel 45.

For example, referring to fig. 2, according to some embodiments of the present utility model, the first driving mechanism 21 may include a first driving motor 211, a transmission member 212, and a connection member 213, the transmission member 212 may be connected between an output shaft of the first driving motor 211 and the connection member 213, and the connection member 213 may be connected between the transmission member 212 and the first piston 22. The transmission member 212 is eccentrically provided with an eccentric column 214, the lower end of the connecting member 213 is provided with a waist-shaped matching hole 215, and the matching hole 215 is sleeved on the outer periphery side of the eccentric column 214. The transmission member 212 is engaged with an output shaft of the first driving motor 211, and when the first driving motor 211 outputs a driving force, the transmission member 212 can be driven to rotate. When the transmission member 212 rotates, the coupling member 213 can be driven to move up and down by the cooperation of the cooperation hole 215 and the eccentric post 214, and the coupling member 213 can drive the first piston 22 to reciprocate up and down, so that the first driving assembly 2 drives the second piston 33 to move.

For example, in some embodiments of the present utility model, when the first driving motor 211 is operated, the first piston 22 reciprocates up and down in the transition chamber 15, and the first prophy fluid in the first fluid containing chamber 11 may be sucked into the mixing chamber 13; simultaneously, the second driving motor 312 works and drives the second piston 33 to slowly move upwards in the intermediate bin 14, so that the second tooth cleaning liquid in the second liquid temporary storage cavity 140 can be conveyed into the mixing cavity 13 to be fully mixed with the first tooth cleaning liquid, and the first piston 22 can also suck the liquid in the mixing cavity 13 into the transition cavity 150 and convey the liquid in the mixing cavity 13 to the liquid outlet channel 70. It should be noted that, the rotation speed of the output shaft of the second driving motor 312 is relatively slow, the second piston 33 moves up slowly at a uniform speed in the intermediate chamber 14, and the second dental cleaning solution in the second liquid temporary storage chamber 140 can flow into the mixing chamber 13 uniformly. The rotational speed of the output shaft of the first driving motor 211 is relatively fast (for example, the rotational speed is greater than 1000 r/min), so that the up-and-down reciprocating speed of the first piston 22 in the transition bin 15 is relatively fast, and it can be considered that the first piston 22 continuously and uniformly sucks the first cleaning liquid in the first liquid accommodating bin 11, so that the ratio of the first cleaning liquid to the second cleaning liquid in the mixing cavity 13 is always approximately the same, and the concentration of the diluted second cleaning liquid is kept consistent in the process before and after oral cleaning.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

In the description of the present utility model, "plurality" means two or more.

In the description of the utility model, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other by another feature therebetween.

In the description of the utility model, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims

1. An oral cleaning device, comprising:

the shell is internally provided with a first liquid accommodating bin and a second liquid accommodating bin which are mutually separated, the shell is internally provided with a mixing cavity and an intermediate bin, the mixing cavity is suitable for being communicated with the first liquid accommodating bin, the intermediate bin is suitable for being communicated with the second liquid accommodating bin, and the intermediate bin is suitable for being communicated with the mixing cavity;

The first driving component is arranged in the shell and is used for conveying the first tooth cleaning liquid in the first liquid accommodating bin to the mixing cavity;

the second drive assembly is used for conveying the second dental cleaning solution in the intermediate bin to the mixing cavity.

2. The oral cleaning device of claim 1, wherein the mixing chamber is adapted to communicate with the intermediate chamber through a first flow passage, the second drive assembly for delivering a second prophy fluid within the intermediate chamber through the first flow passage to the mixing chamber, the oral cleaning device further comprising a first control valve for opening and closing the first flow passage.

3. The oral cleaning device of claim 2, wherein the first control valve is a one-way valve and the first control valve is one-way conductive in a direction from the intermediate cartridge to the mixing chamber.

4. The oral cleaning device of claim 2, wherein the second drive assembly comprises a second drive mechanism drivingly connected to the second piston for driving the second piston to move in a first direction, at least a portion of the second piston being located within the intermediate chamber, the second piston and an inner wall of the intermediate chamber together defining a variable volume second liquid staging chamber adapted to communicate with the mixing chamber through the first flow passage, the second liquid staging chamber adapted to communicate with the second liquid receiving chamber.

5. The oral cleaning device of claim 4, wherein the second drive mechanism comprises:

the second piston is in threaded fit with the screw rod;

and the second driving motor is in transmission connection with the screw rod and is used for driving the screw rod to rotate.

6. The oral cleaning device of claim 5, wherein the second drive mechanism further comprises a gear drive mechanism comprising a first drive gear mounted to an output shaft of the second drive motor and a second drive gear mounted to the lead screw and engaged with the first drive gear.

7. The oral cleaning device of claim 5, wherein the lead screw and the second drive motor are arranged in a second direction, the second direction being perpendicular to the first direction.

8. The oral cleaning device of claim 5, further comprising: the anti-rotation structure comprises a first matching structure arranged on the intermediate bin and a second matching structure arranged on the second piston, and the second piston is limited to rotate by matching the first matching structure with the second matching structure.

9. The oral cleaning device of claim 8, wherein the first mating structure is a mating protrusion formed on an inner peripheral wall of the intermediate compartment, the second mating structure is a mating groove formed on an outer peripheral wall of the second piston, the mating protrusion abuts an inner wall of the mating groove in a circumferential direction of the second piston, and an extension length of the mating groove in the first direction is not less than a maximum stroke of the second piston.

10. The oral cleaning device according to claim 4, wherein a position detecting rod is provided on an outer peripheral wall of the second piston, and a first position detecting switch and a second position detecting switch are provided on an inner wall of the outer housing at intervals along a first direction, and a distance between the first position detecting switch and the second position detecting switch in the first direction is a maximum stroke of the second piston.

11. The oral cleaning device of claim 2, wherein the second drive assembly is further configured to deliver the second prophy fluid within the second fluid containing chamber to the intermediate chamber.

12. The oral cleaning device of claim 11, wherein the second liquid reservoir is adapted to communicate with the intermediate reservoir through a second flow passage, the second drive assembly being adapted to deliver a second prophy liquid within the second liquid reservoir to the intermediate reservoir through the second flow passage, the oral cleaning device further comprising a second control valve for opening and closing the second flow passage.

13. The oral cleaning device of claim 12, wherein the second control valve is a one-way valve and the second control valve is one-way conductive in a direction from the second liquid containing cartridge to the intermediate cartridge.

14. The oral cleaning device of claim 1, wherein the second liquid containing compartment is aligned with the intermediate compartment in a first direction, the mixing chamber is aligned with the intermediate compartment in a second direction, the mixing chamber is located at an end of the intermediate compartment adjacent the second liquid containing compartment, and the second direction is perpendicular to the first direction.

15. The oral cleaning device of claim 1, wherein the mixing chamber and the first liquid reservoir are adapted to communicate through a third flow passage, the first drive assembly for delivering the first prophy fluid within the first liquid reservoir to the mixing chamber through the third flow passage, the oral cleaning device further comprising a third control valve for opening and closing the third flow passage; the third control valve is a one-way valve and is in one-way conduction in the direction from the first liquid accommodating bin to the mixing cavity.

16. The oral cleaning device of claim 1, wherein the mixing chamber is adapted to communicate with the first liquid reservoir through a third flow path, the first drive assembly is adapted to deliver the first prophy fluid in the first liquid reservoir to the mixing chamber through the third flow path, a capacitive sensor is disposed in the third flow path, the capacitive sensor is adapted to detect whether the first prophy fluid is in the third flow path, and the capacitive sensor is electrically connected to the first drive assembly.

17. The oral cleaning device of claim 1, wherein the first liquid reservoir comprises a first reservoir portion and a second reservoir portion, the first drive assembly, the second liquid reservoir, the intermediate reservoir, and the mixing chamber all being located on the same side of the first reservoir portion in the first direction.

18. The oral cleaning device of claim 17, wherein the first drive assembly and the second drive assembly are each located on the same side of the second housing portion along a second direction that is perpendicular to the first direction.

19. The oral cleaning device according to any one of claims 1-18, further comprising: the second tooth cleaning liquid is stored in the solution bag, and the solution bag is detachably arranged in the second liquid containing bin;

wherein the solution package is adapted to communicate with the intermediate bin; alternatively, the mouthwash in the solution package may flow into the second liquid receiving bin when the solution package is placed in the second liquid receiving bin.

20. The oral cleaning device according to any one of claims 1-18, comprising: the nozzle is arranged on the shell and at least partially positioned outside the shell, a liquid outlet channel communicated with the mixing cavity is arranged in the nozzle, and the first driving assembly is also used for conveying liquid in the mixing cavity into the liquid outlet channel and spraying out through a nozzle opening of the nozzle.

21. The oral cleaning device of claim 20, further comprising a transition chamber, the first drive assembly comprising a first drive mechanism and a first piston, at least a portion of the first piston being located within the transition chamber and defining a transition chamber with an inner wall of the transition chamber, the transition chamber being adapted to communicate the mixing chamber with the outlet channel, the first drive mechanism being coupled to the first piston for driving movement of the first piston such that the volume of the transition chamber is variable.

22. The oral cleaning device of claim 21, wherein the mixing chamber and the transition chamber are adapted to communicate through a fourth flow passage, the oral cleaning device further comprising a fourth control valve for opening and closing the fourth flow passage; the fourth control valve is a one-way valve and is in one-way conduction in the direction from the mixing cavity to the transition cavity.

23. The oral cleaning device of claim 22, wherein the transition chamber and the outlet channel are adapted to communicate through a fifth flow passage, the oral cleaning device further comprising a fifth control valve for opening and closing the fifth flow passage; the fifth control valve is a one-way valve, and is in one-way conduction in the direction from the transition cavity to the liquid outlet channel.