CN215019448U

CN215019448U - Tooth flushing device core and tooth flushing device

Info

Publication number: CN215019448U
Application number: CN202120051154.9U
Authority: CN
Inventors: 张青; 刘小文; 李进峰; 刘信全; 周刚; 王刚
Original assignee: Fly Cat Electrical Co Ltd
Current assignee: Fly Cat Electrical Co Ltd
Priority date: 2021-01-08
Filing date: 2021-01-08
Publication date: 2021-12-07
Anticipated expiration: 2031-01-08

Abstract

The utility model is suitable for a water toothpick field provides a water toothpick core and water toothpick. Wherein, the water toothpick core includes: a driver having a rotation axis; the reduction gearbox comprises a sun wheel, planet wheels, a gear ring and a planet carrier, wherein the sun wheel is connected with a rotating shaft of the driver and coaxially rotates, the planet wheels are uniformly distributed on the periphery of the sun wheel and meshed with the sun wheel, the gear ring is positioned on the periphery of the planet wheels and meshed with the planet wheels, and the planet carrier is connected with the planet wheels and rotates along the rotating axis of the rotating shaft; the water squeezing assembly comprises a box body with a water inlet and a water outlet and a main screw rod positioned in the box body, wherein the main screw rod is connected with the planet carrier and drives a water body in the box body to flow from the water inlet to the water outlet when rotating along with the planet carrier. The utility model provides a towards tooth ware core can improve the stability of operation and effectively reduce moving noise.

Description

Tooth flushing device core and tooth flushing device

Technical Field

The utility model belongs to the technical field of towards the tooth ware, more specifically say, relate to a towards tooth ware core and towards tooth ware.

Background

The core of the existing tooth-rinsing device usually adopts a motor to provide power, and utilizes an eccentric gear to drive a piston connecting rod structure to reciprocate in a pump body, so as to form high-pressure water which is sprayed out from a spray head. However, the existing tooth-rinsing device core has high requirements on the assembly precision of parts, and the assembly has slight deviation, which easily causes the noise during the operation to be higher, thereby causing the tooth-rinsing device to have low use performance and poor quality stability.

Disclosure of Invention

An object of the utility model is to overcome the not enough of above-mentioned prior art, provide a towards tooth ware core, it aims at solving the current high problem of tooth ware core running noise that washes.

In order to achieve the above object, the embodiment of the present invention provides the following technical solutions:

a dental irrigator cartridge comprising:

a driver having a rotation axis;

the reduction gearbox comprises a sun wheel, planet wheels, a gear ring and a planet carrier, wherein the sun wheel is connected with a rotating shaft of the driver and coaxially rotates, the planet wheels are uniformly distributed on the periphery of the sun wheel and meshed with the sun wheel, the gear ring is positioned on the periphery of the planet wheels and meshed with the planet wheels, and the planet carrier is connected with the planet wheels and rotates along the rotating axis of the rotating shaft;

crowded water subassembly, including box and leading screw, the box has water inlet and delivery port, the leading screw is located the box, and with the planet carrier is connected, and follows the planet carrier rotates, the leading screw can order about when rotating water in the box is followed the water inlet to the delivery port flows.

Optionally, the water squeezing assembly further comprises at least one auxiliary screw, the extending direction of the auxiliary screw is parallel to the extending direction of the main screw, the auxiliary screw is meshed with the main screw and rotates along with the main screw when the main screw rotates, and the auxiliary screw can drive the water body in the box body to flow from the water inlet to the water outlet when rotating.

Optionally, the water inlet is arranged on the box body, is close to the reduction gearbox and is positioned on one side of the main screw in the radial direction, and the water outlet is arranged on the box body, is deviated from the reduction gearbox and is positioned on one side of the main screw in the axial direction.

Optionally, the main screw has an external thread, and the cross-sectional shape of the external thread is rectangular.

Optionally, the working height of the external thread is less than the distance from the crest to the root of the external thread.

Optionally, the pitch of the external thread is greater than twice the face width of the external thread.

Optionally, both ends of the main screw and the auxiliary screw are connected with the box body through bearings.

Optionally, the reduction gearbox comprises a box base and a top cover, the box base and the top cover are respectively arranged on two sides of the gear ring, the box base, the top cover and the gear ring are enclosed to form an accommodating cavity for accommodating the sun gear, the planet gear and the planet carrier, the box base is provided with a first avoiding hole for the rotation shaft to pass through, and the top cover is provided with a second avoiding hole for avoiding the planet carrier and the screw rod.

Optionally, the teeth of the sun gear, the planet gear and the ring gear are helical teeth.

A tooth flushing device is characterized by comprising the tooth flushing device core.

The utility model provides a towards tooth ware core, the rotation axis and the coaxial setting of planet carrier, the setting that adopts crowded water subassembly of the even setting of arranging of multirow star gear, driver improve towards the stability of tooth ware core operation and effectively reduce towards tooth ware core moving noise.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

Fig. 1 is a schematic view of an overall structure of a movement of a dental scaler according to an embodiment of the present invention;

fig. 2 is a schematic partial structure view of a movement of the tooth washing device provided by the embodiment of the present invention;

FIG. 3 is a schematic view of the detachable structure of the core of the tooth washing device provided by the embodiment of the present invention;

fig. 4 is the cooperation schematic diagram of sun gear, planet wheel and ring gear in the embodiment of the utility model.

Wherein, in the figures, the respective reference numerals:

10. a driver; 20. a reduction gearbox; 21. a sun gear; 22. a planet wheel; 23. a ring gear; 24. a planet carrier; 241. a turntable; 242. an input shaft; 243. an output shaft; 25. a box base; 26. a top cover; 30. a wringing component; 31. a box body; 301. a water inlet; 302. a water outlet; 32. a main screw; 33. and an auxiliary screw rod.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1 to 4, the tooth irrigator cartridge and the tooth irrigator using the same provided by the present application will now be exemplified.

The tooth flushing device core comprises a driver 10, a reduction box 20 and a water squeezing assembly 30.

The driver 10 has a rotational axis. The driver 10 may be a motor of various forms as long as it has a rotating shaft and can output torque through the rotating shaft.

The reduction gearbox 20 comprises a sun wheel 21, planet wheels 22, a gear ring 23 and a planet carrier 24, wherein the sun wheel 21 is connected with a rotating shaft of the driver 10 and coaxially rotates, the planet wheels 22 are uniformly distributed on the periphery of the sun wheel 21 and meshed with the sun wheel 21, the gear ring 23 is positioned on the periphery of the planet wheels 22 and meshed with the planet wheels 22, and the planet carrier 24 is connected with the planet wheels 22 and rotates along the rotating axis of the rotating shaft.

The wringing assembly 30 comprises a box body 31 and a main screw 32, the box body 31 is provided with a water inlet 301 and a water outlet 302, the main screw 32 is positioned in the box body 31, is connected with the planet carrier 24 and rotates along with the planet carrier 24, and the main screw 32 can drive the water in the box body 31 to flow from the water inlet 301 to the water outlet 302 when rotating.

In the core of the tooth flushing device provided by this embodiment, the driver 10 drives the main screw 32 to rotate after being decelerated by the reduction box 20, and the main screw 32 rotates to force the water in the box body 31 to be pumped out from the water inlet 301 to the water outlet 302.

Referring to fig. 2 and 4, in the present embodiment, the reduction gearbox 20 adopts a planetary gear structure, specifically, the reduction gearbox 20 includes a sun gear 21, a plurality of planetary gears 22, a ring gear 23 and a planet carrier 24, the sun gear 21 is disposed in the center, the plurality of planetary gears 22 are disposed around the periphery of the sun gear 21, and the ring gear 23 is sleeved on the periphery of the whole planetary gear 22. The planetary gears 22 are simultaneously in meshing connection with the sun gear 21 and the ring gear 23. The ring gear 23 is stationary, the sun gear 21 acts as a driving wheel and the planet gears 22 act as driven wheels. The sun gear 21 is connected with a rotating shaft of the driver 10 to receive a torque of the driver 10, the planet carrier 24 includes a rotating disk 241, a plurality of input shafts 242 and output shafts 243 which are arranged on both sides of the rotating disk 241, the input shafts 242 are arranged corresponding to the planet gears 22, the input shafts 242 are coaxially connected with the planet gears 22, and the output shafts 243 are connected with the main screw 32 to output the torque. When the driver 10 rotates, the sun gear 21 rotates along with the sun gear, the planet gears 22 rotate synchronously under the combined action of the sun gear 21 and the ring gear 23, the planet carrier 24 rotates along with the sun gear, and the rotation axis of the planet carrier 24 is the same as that of the driver 10. The output shaft 243, the rotary shaft of the driver 10, and the main screw 32 are coaxially disposed.

In this embodiment, the reduction gearbox 20 adopts a planetary wheel structure, and a plurality of uniformly distributed planetary wheels 22 are adopted to simultaneously transmit motion and power. The centrifugal inertia force generated by the revolution of the planet gears 22 and the radial component force of the reaction force of the ring gear 23 are balanced with each other, and the rotation shaft of the driver 10 and the output shaft 243 of the planet carrier 24 are aligned, so that the stress on the rotation shaft of the driver 10 and the output shaft 243 of the planet carrier 24 is small, the operation stability is good, and the reduction of the operation noise is facilitated. In addition, because the planet gears 22 and the gear ring 23 are in inner meshing, the transmission space is fully utilized, and the space size of the whole planet gear structure is much smaller than that of a common fixed-axis gear structure under the same condition. Therefore, the design of the reduction gearbox 20 with a planet wheel structure is adopted by the electric core of the tooth flushing device, so that the stable transmission of the moment between the driver 10 and the main screw 32 is facilitated, the noise is reduced, and the miniaturization of the gear box is facilitated.

In the illustrated structure, there are three planet wheels 22, and in other embodiments, there may be four planet wheels 22, five planet wheels 22, etc., and those skilled in the art may set the number according to the design load of the transmission.

The tooth flushing device core provided by the embodiment adopts the water squeezing component 30 to replace the existing eccentric gear to drive the piston connecting rod structure to drive the water body. The main screw 32 rotates in the tank 31, so that negative pressure is formed in the area of the water inlet 301 and high pressure is formed in the area of the water outlet 302, and the water continuously enters the tank 31 from the water inlet 301 and is pumped out through the water outlet 302. In this embodiment, the main screw 32 rotates at a constant speed, the flow and pressure of the discharged water are stable, and the operation is stable and reliable, so that the generated noise is low.

From the above, the tooth rinsing device core provided by the embodiment improves the running stability of the tooth rinsing device core and effectively reduces the running noise of the tooth rinsing device core through the arrangement of uniformly arranging the plurality of planetary gears 22, the arrangement of coaxially arranging the rotating shaft of the driver 10 and the output shaft 243 of the planet carrier 24 and the arrangement of adopting the water squeezing component 30.

Apply to the tooth ware of dashing that this embodiment provided in dashing the tooth ware, can ensure to dash the hydraulic stability of tooth ware to noise when effectively reducing and dashing the tooth ware and using improves user experience.

In this embodiment, the teeth of the sun gear 21, the planet gear 22 and the ring gear 23 are all helical teeth, so as to further improve the working stability.

In another embodiment of the present application, please refer to fig. 1 and fig. 3, the reduction gearbox 20 includes a box base 25 and a top cover 26, the box base 25 and the top cover 26 are respectively disposed on two sides of the gear ring 23, the box base 25, the top cover 26 and the gear ring 23 enclose to form an accommodating cavity for accommodating the sun gear 21, the planet gear 22 and the planet carrier 24, the box base 25 is provided with a first avoiding hole for passing a rotating shaft, and the top cover 26 is provided with a second avoiding hole for avoiding the connection of the planet carrier 24 and the main screw 32.

The box body 31 and the top cover 26 fixedly connect other structural components of the reduction gearbox 20 into a whole, and the structure is compact. The first avoidance hole and the second avoidance hole have an avoidance function and also play a role in radially limiting the movement of the rotation shaft and the output shaft 243. During assembly, the rotating shaft of the motor is inserted into the sun gear 21, and the output shaft 243 of the planet carrier 24 is connected with the main screw 32, so that the assembly is facilitated.

In another embodiment of the present application, referring to fig. 2 and 3, the squeezing assembly 30 further includes at least one secondary screw 33, the extension direction of the secondary screw 33 is parallel to the extension direction of the main screw 32, the secondary screw 33 is engaged with the main screw 32 and rotates with the main screw 32 when the main screw 32 rotates, and the secondary screw 33 can drive the water in the tank 31 to flow from the water inlet 301 to the water outlet 302 when the secondary screw 33 rotates.

The main screw 32 is a driving screw, the sub screw 33 is a driven screw, and the main screw 32 and the sub screw 33 rotate in opposite directions. Due to the mutual engagement of the main screw rod 32 and the auxiliary screw rod 33 and the close fit of the main screw rod 32 and the auxiliary screw rod 33 with the inner wall of the box 31, the interior of the box 31 between the water inlet 301 and the water outlet 302 is divided into one or more sealed spaces. As the main screw 32 and the sub screw 33 rotate, these sealed spaces are formed continuously at the water inlet 301 of the pump, and the sucked liquid is sealed therein and continuously moved to the water outlet 302 along the axial direction of the main screw 32 and the sub screw 33, and the liquid sealed in each space is continuously discharged as if a nut is continuously pushed forward as the screw turns.

The addition of the sub-screw 33 can increase the number of the closed spaces partitioned inside the case 31 and increase the water pressure.

The number of the sub-screws 33 may be set to one or two by those skilled in the art. In the case of two sub-screws 33, the main screw 32 is located in the middle, and the two sub-screws 33 are located on both sides of the main screw 32.

In this embodiment, both ends of the main screw 32 and the sub screw 33 are connected to the case 31 through bearings.

In another embodiment of the present application, the water inlet 301 is disposed on the box 31 and close to the reduction box 20 and located on one side of the main screw 32 in the radial direction, and the water outlet 302 is disposed on the box 31 and away from the reduction box 20 and located on one side of the main screw 32 in the axial direction.

For convenience of description, the extending direction of the main screw bar 32 is defined as a left-right direction. The box body 31 is square and is formed by enclosing and connecting six plates including a left plate, a right plate, an upper plate, a lower plate, a front plate and a rear plate. The water inlet 301 is opened on any one of the front plate, the rear plate, the upper plate and the lower plate of the box body 31 and is arranged close to the left plate, and the water outlet 302 is opened on the right plate of the box body 31.

The main screw 32 and the auxiliary screw 33 extend left and right, and the water inlet 301 and the water outlet 302 are arranged left and right, so that the water body in the box body 31 is driven to flow from left to right when the main screw 32 and the auxiliary screw 33 rotate. In the specific position selection of the water inlet 301 and the water outlet 302, the left plate of the box body 31 is close to the reduction gearbox 20 and needs to avoid the connection between the output shaft 243 and the main screw 32, so that the water inlet 301 is arranged on any one of the front plate, the rear plate, the upper plate and the lower plate adjacent to the left plate, the spatial arrangement is more reasonable, and the water inlet 301 and the water delivery pipe of the water tank are conveniently connected. The water outlet 302 is arranged on the right plate, so that the water body can be smoothly pumped out.

In another embodiment of the present application, main screw 32 has external threads that are rectangular in cross-sectional shape. Rectangular screw thread has better transmission efficiency and is favorable to improving water pressure than triangular screw thread. The secondary screw 33 has the same structure as the main screw 32, and is not described in detail. The cross-sectional shape of the external thread may be trapezoidal, saw-toothed, etc. by those skilled in the art, and is not limited herein.

In another embodiment of the present application, please refer to fig. 3, the pitch of the external thread is greater than twice the face width of the external thread. The tooth width of the external thread refers to the width of the cross section of the external thread in the axial direction. The thread pitch of the external thread is larger than twice the tooth width, in other words, the distance between two adjacent teeth on the same axial section is larger than the tooth width. It can be understood that, when the main screw bar 32 and the sub screw bar 33 are meshed and connected as seen from the axial section, the teeth of the sub screw bar 33 are located between two adjacent teeth of the main screw bar 32, and only one side of the teeth abuts against the teeth of the main screw bar 32, and the other side of the teeth has a gap with the other teeth of the main screw bar 32. The presence of this clearance does not affect the meshing transmission relationship of the main screw 32 and the sub screw 33. The arrangement that the pitch of the teeth of the external threads is larger than the tooth width can increase the space size of the closed space divided by the main screw 32 and the auxiliary screw 33, so that more water can enter each closed space. Under the condition that the space of the box body 31 is fixed, the water delivery efficiency is improved. The person skilled in the art can set the specific size of the pitch of the external thread according to the actual situation, and is not limited here.

In another embodiment of the present application, the working height of the external thread is less than the crest to root distance of the external thread. The working height of the external thread is the distance between the mutually overlapping parts of the profiles of two mating external threads in a direction perpendicular to the thread axis. The working height of the external thread of the main screw rod 32 is smaller than the tooth height (the distance from the crest to the root), in other words, in the meshed connection state of the main screw rod 32 and the auxiliary screw rod 33, a gap space is reserved between the main screw rod 32 and the auxiliary screw rod 33 in the radial direction to accommodate the water body to enter, and the arrangement can increase the space size of the closed space divided by the main screw rod 32 and the auxiliary screw rod 33, so that more water bodies can enter each closed space. Under the condition that the space of the box body 31 is fixed, the water delivery efficiency is improved.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A dental irrigator cartridge comprising:

a driver having a rotation axis;

2. The dental irrigator cartridge of claim 1 wherein the wringing assembly further comprises at least one secondary screw, the secondary screw extending in a direction parallel to the main screw, the secondary screw being intermeshed with the main screw and rotating therewith when the main screw rotates, the secondary screw being capable of driving the water in the tank from the water inlet to the water outlet when rotating.

3. The tooth-rinsing device core as claimed in claim 1, wherein the water inlet is disposed on the box body and close to the reduction box and located on one side of the main screw in the radial direction, and the water outlet is disposed on the box body and away from the reduction box and located on one side of the main screw in the axial direction.

4. The dental irrigator cartridge of claim 1 wherein said main screw has an external thread, said external thread having a rectangular cross-sectional shape.

5. The dental irrigator cartridge of claim 4 wherein the working height of said external thread is less than the distance from the crest to the root of said external thread.

6. The dental irrigator cartridge of claim 5, wherein the pitch of said external thread is greater than twice the face width of said external thread.

7. The dental irrigator cartridge of claim 2 wherein both ends of said main screw and said secondary screw are connected to said housing by bearings.

8. The tooth-rinsing device core as claimed in claim 1, wherein the reduction box comprises a box base and a top cover, the box base and the top cover are respectively disposed at two sides of the gear ring, the box base, the top cover and the gear ring enclose a containing cavity for containing the sun gear, the planet gear and the planet carrier, the box base is provided with a first avoiding hole for the rotation shaft to pass through, and the top cover is provided with a second avoiding hole for avoiding the planet carrier to be connected with the screw rod.

9. The dental irrigator cartridge of any one of claims 1 to 8 wherein the teeth of the sun gear, the planet gears and the ring gear are helical teeth.

10. A dental irrigator comprising an irrigator cartridge according to any one of claims 1 to 9.