CN216495767U

CN216495767U - Working mechanism of tooth flushing device

Info

Publication number: CN216495767U
Application number: CN202122937066.1U
Authority: CN
Inventors: 刘会明; 蔡延钟; 陈丹枫; 高坤
Original assignee: Ningbo Seago Electric Co ltd
Current assignee: Ningbo Seago Electric Co ltd
Priority date: 2021-11-27
Filing date: 2021-11-27
Publication date: 2022-05-13
Anticipated expiration: 2031-11-27

Abstract

The utility model provides a working mechanism of a tooth flushing device, which comprises a linear motor and a pump body, wherein the linear motor comprises a driving body and a driving shaft, the driving body drives the driving shaft to do telescopic motion, the driving body comprises at least one magnetic steel and at least one stator, the magnetic steel and the stator are sequentially and axially arranged along the driving shaft, the magnetic steel is fixedly connected with the driving shaft, the stator and the driving shaft are kept away from the space, the stator and the magnetic steel interact to promote the magnetic steel to do linear reciprocating motion so as to drive the driving shaft to do linear reciprocating motion, the linear motor drives the pump body to convey fluid, and one end of the driving shaft extends into the pump body so as to directly drive the pump body to do linear reciprocating motion through the telescopic motion.

Description

Working mechanism of tooth flushing device

Technical Field

The utility model relates to the field of oral cleaning, in particular to a working mechanism of a tooth flushing device.

Background

A dental irrigator is a common oral cleaning product. The tooth flusher comprises a water pump, a water tank, a main body and a spray head. The water pump, the water tank, and the spray head are mounted to the main body. The water pump pumps water from the water tank and sprays the water out of the spray head. The water pump generally includes a linear motor, a transmission mechanism and a pump body mechanism. The linear motor drives the transmission mechanism, and the transmission mechanism drives the pump body mechanism to work. The transmission mechanism generally comprises a connecting member and a gear, the connecting member connects the linear motor and the gear, and the gear is drivingly connected to a piston of the pump body. The linear motor drives the connecting rod to drive the gear to rotate, and then the piston of the pump body mechanism is pulled to make the piston linearly reciprocate, so that the fluid circulation in the pump body mechanism is controlled.

The kinetic energy is transferred from the linear motor to the pump body mechanism via the transmission mechanism, which results in a loss of kinetic energy. In addition, the gear can generate serious noise in the rotating process, so that the noise of the tooth flushing device becomes a pain point, and the experience of consumers is poor.

Therefore, a technique for solving the above problems is required.

SUMMERY OF THE UTILITY MODEL

One advantage of the present invention is to provide a working mechanism of a tooth-rinsing device, which directly drives a pump body to work through a linear motor, thereby reducing transmission and noise.

Another advantage of the present invention is to provide a working mechanism of a dental irrigator, which employs a linear motor for telescopic motion to directly drive a pump body to reciprocate linearly, thereby reducing kinetic energy consumption.

Another advantage of the present invention is to provide a working mechanism of a dental irrigator which reduces the number of transmission mechanisms, simplifies the structure, reduces the cost and improves the efficiency of kinetic energy transmission compared to the prior art.

It is another advantage of the present invention to provide a dental irrigator operating mechanism wherein the pump body includes a piston assembly and the linear motor is coupled to the piston assembly to directly drive the piston assembly.

Other advantages and features of the present invention will become more fully apparent from the following detailed description.

According to one aspect of the present invention, there is provided a working mechanism of a dental irrigator, comprising:

the linear motor comprises a driving body and a driving shaft, the driving body drives the driving shaft to do telescopic motion, the driving body comprises at least one magnetic steel and at least one stator, the magnetic steel and the stator are sequentially and axially arranged along the driving shaft, the magnetic steel is fixedly connected with the driving shaft, the stator and the driving shaft are kept away from the space, and the stator and the magnetic steel interact with each other to promote the magnetic steel to do linear reciprocating motion so as to drive the driving shaft to do linear reciprocating motion; and

and the linear motor drives the pump body to convey fluid, wherein one end of the driving shaft extends into the pump body so as to directly drive the pump body to linearly reciprocate through telescopic motion.

According to an embodiment of the present invention, the driving body includes a first mounting part, a second mounting part, and a support member, the first mounting part and the second mounting part are fixed to both ends of the support member, and both ends of the driving shaft are fixed through the first mounting part and the second mounting part, respectively, to be held to the support member.

According to an embodiment of the present invention, the driving body further includes a fixing member, and the fixing member fixes the stator to the supporting member to keep the stator and the supporting member relatively stationary.

According to an embodiment of the present invention, the driving body further includes at least one elastic element, the elastic element is disposed on at least one side of the magnetic steel, and the elastic element generates an elastic restoring force after being deformed by a force, so as to urge the magnetic steel to linearly reciprocate.

According to one embodiment of the utility model, at least one of the first mounting member and the second mounting member is made of an elastic material to generate an elastic deformation and a restoring force when a force is applied to urge the driving shaft to reciprocate linearly.

According to one embodiment of the utility model, the magnetic steels are symmetrically arranged on two sides of the stator in the axial direction.

According to one embodiment of the present invention, the pump body includes a fluid delivery assembly and a piston assembly movably mounted within the fluid delivery assembly to change the state of the flow path of the fluid delivery assembly, wherein one end of the drive shaft extends into the piston assembly to drive the piston assembly in a linear reciprocating motion.

According to an embodiment of the present invention, the fluid delivery assembly is provided with at least one inlet and at least one outlet, the piston moves linearly in one direction to open the inlet, and the fluid enters the interior of the fluid delivery assembly through the outlet, and the piston moves linearly in the opposite direction to push the fluid to move linearly in the direction of the outlet, so that the fluid flows out of the fluid delivery assembly.

According to one embodiment of the utility model, the inlet is fitted with a first valve, the first valve being connected to the piston, the piston moving linearly to control the first valve to switch between an open state and a closed state.

According to one embodiment of the utility model, the outlet is fitted with a second valve towards which the piston is driven by the linear motor to push fluid out of the second valve.

Drawings

FIG. 1 is a schematic view of the working mechanism of a dental irrigator according to a preferred embodiment of the present invention.

Fig. 2 is an exploded view of the operating mechanism of a dental irrigator according to a preferred embodiment of the present invention.

FIG. 3 is a schematic view of a part of the working mechanism of the tooth irrigator according to a preferred embodiment of the utility model in section.

FIG. 4 is a schematic view of a linear motor of a working mechanism of a dental irrigator, according to a preferred embodiment of the utility model.

FIG. 5 is a schematic diagram of the movement of a linear motor of the operating mechanism of the dental irrigator according to a preferred embodiment of the utility model.

FIG. 6 is another schematic diagram of the motion of a linear motor of a dental irrigator operating mechanism according to a preferred embodiment of the utility model.

Detailed Description

The following description is presented to disclose the utility model so as to enable any person skilled in the art to practice the utility model. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The embodiments of the utility model described below and illustrated in the drawings are intended to be illustrative only and not limiting of the utility model. Any variations or modifications may be made to the embodiments of the utility model without departing from the principles described.

Referring to the drawings of the present specification and FIGS. 1-3, a working mechanism of a dental irrigator according to a preferred embodiment of the present invention is disclosed and described in the following description.

The working mechanism of the tooth flushing device comprises a linear motor 10 and a pump body 20. The pump body 20 is drivably connected to the linear motor 10. Wherein, the linear motor 10 makes a linear reciprocating motion to drive the pump body 20 to make a linear reciprocating motion.

The linear motor 10 includes a driving body 11 and a driving shaft 12. The driving body 11 drives the driving shaft 12 to move telescopically, i.e. the driving shaft 12 moves linearly and reciprocally. The drive shaft 12 is connected to the pump body 20. The driving body 11 drives the driving shaft 12 to perform an extending motion towards the body 20 and a retracting motion towards the driving body 11.

The pump body 20 performs fluid transportation operation under the action of the linear motor 10. The pump body 20 includes an inlet member 21, a flow member 22, and an outlet member 23, the inlet member 21, the flow member 22, and the outlet member 23 are connected in sequence to form a fluid delivery assembly, and a fluid flow path is formed inside the fluid delivery assembly. The inlet member 21 takes in fluid, the fluid enters the flow member 22, and the outlet member 23 discharges the fluid.

The inflow member 21 and the linear motor 10 are disposed at both sides of the circulating member 22, respectively. The linear motor 10 controls the fluid flow state of the circulation member 22 by kinetic energy.

The fluid delivery assembly has at least one inlet 2201 and at least one outlet 2202, and fluid from the inlet 21 passes through the inlet 2201 into the outlet 22 and through the outlet 2202 from the outlet 22 into the outlet 23.

In one example of the present invention, the flow-through member 22 is provided with the inlet 2201, the inlet 2201 faces the inlet 21, and the fluid enters the flow-through member 22 from the inlet 21 through the inlet 2201. A piston assembly 24 is mounted within the flow-through member 22, the piston assembly 24 being linearly reciprocable relative to the flow-through member 22. The piston assembly 24 linearly reciprocates, and the relative position of the inlet 2201 changes, so that the inlet 2201 is switched between an open state and a closed state.

In other examples of the present invention, the inlet 2201 may be disposed at the end of the inlet 21 from which the fluid flows out. Alternatively, the inlet 2201 is provided at the communication position between the flow element 22 and the inlet 21.

The inlet 2201 is installed with at least one first valve 221, and the first valve 221 controls the fluid flowing from the inlet 21 to the flow-through 22. The first valve 221 may be a two-way valve or a one-way valve.

When the piston assembly 24 moves towards the linear motor 10, the inlet 2201 is opened, and the fluid enters the circulating part 22 from the inlet 21 through the inlet 2201. The piston assembly 24 moves in the opposite direction and the inlet 2201 is closed.

The piston assembly 24 is directly connected with the linear motor 10, the linear motor 10 drives the piston assembly 24 to do linear reciprocating motion, a transmission part does not need to be arranged between the piston assembly and the linear motor, kinetic energy consumption is reduced, transmission efficiency is improved, and the performance of the working mechanism of the tooth flushing device is improved. In addition, the piston assembly 24 linearly reciprocates in the interior of the flow-through member 22, and the noise is low, and even if a certain noise is generated, the outward transmission of the noise can be reduced due to the wrapping of the flow-through member 22, and the noise problem of the tooth irrigator product equipped with the tooth irrigator operating mechanism provided by the utility model can be improved.

Wherein, in one example of the present invention, the piston assembly 24 includes a piston 241 and a sleeve 242, the piston 241 is mounted in the sleeve 242, and the sleeve 242 is mounted in the flow-through member 22. The drive shaft 12 extends into the interior of the piston assembly 24 with the end secured within the piston 241. The driving body 11 drives the driving shaft 12 to move telescopically, so as to drive the piston 241 to move linearly and reciprocally.

The relative position between the piston 241 and the inlet 2201 is changed with the linear reciprocation of the piston 241. When the driving shaft 12 makes an extending motion, the piston 241 is driven to linearly move in one direction, the inlet 2201 is closed, and fluid cannot enter the circulating member from the inlet 21. When the driving shaft 12 makes a telescopic motion, the piston 241 is driven to linearly move in an opposite direction, the inlet 2201 is opened, and the fluid enters the flow-through member 22 from the inlet 21.

The piston 241 is driven by the linear motor 10 to perform linear reciprocating motion, kinetic energy is directly transmitted to the piston 241 from the linear motor 10, a transmission part is not required to be arranged in the piston, kinetic energy loss is reduced, and kinetic energy transmission efficiency is high. The piston 241 reciprocates inside the circulation member 22, thereby effectively reducing noise of the product.

The outflow 2202 is provided with the flow element 22 and/or the outflow element 23. The outlet 2202 is provided with a second valve 222, and the fluid enters the flow member 22, exits the flow member 22 through the second valve 222, enters the outlet 23, and exits the working mechanism of the tooth irrigator.

When the linear motor 10 drives the piston assembly 24 to linearly move toward the outlet 2202, the fluid in the flow member 22 is pushed to flow toward the outlet 2202, the second valve 222 is opened, and the fluid flows out of the flow member 22 and enters the outlet 23.

When the piston assembly 24 moves toward the outlet 2202, the fluid is compressed and pushed toward the second valve 222, causing the second valve 222 to open, and the fluid enters the outlet member 23.

In one example of the present invention, the dental irrigator operating mechanism further includes a bracket 30, and the linear motor 10 and the pump body 20 are mounted to the bracket 30 to form the dental irrigator operating mechanism.

The holder 30 has a driving chamber 301 and a pump chamber 302, and the driving chamber 301 and the pump chamber 302 are respectively mounted with the linear motor 10 and the pump body 20.

The bracket 30 may be adapted to be mounted within the body of a dental irrigator in which the linear motor 10 and pump body 20 are supported and positioned. The pump body 20 is connected to a container at one end thereof and is provided with a spray head at the other end thereof, and the linear motor 10 is linearly reciprocated to drive the pump body 20 to draw fluid from the container and to spray the fluid from the spray head after pressurization.

Wherein the inlet member 21 is connected to a container from which fluid is drawn, and the outlet end of the outlet member 23 is provided with a spray head to allow the fluid to be sprayed from the spray head. After the fluid in the inflow component 21 enters the circulation component 22, the fluid is pressurized under the action of the linear motor 10 driving the piston assembly 24 to linearly reciprocate, the second valve 222 is opened, and the fluid enters the outflow component 23 in a pulse mode and is ejected from the nozzle to provide pulse fluid for the oral cavity.

Referring to fig. 4 to 6, in one embodiment of the linear motor 10 provided in the present invention, the linear motor 10 includes a driving body 11 and a driving shaft 12. The drive shaft 12 extends from the drive body 11. The driving body 11 includes a stator 111 and at least one pair of magnetic steels 112, where the magnetic steels 112 are symmetrically distributed on two sides of the stator 111. Preferably, the magnetic steel 112, the stator 111 and the other magnetic steel 112 are sequentially disposed along the driving shaft 12. That is, the magnetic steels 112 are symmetrically distributed on two axial sides of the stator 111.

The magnetic steel 112 is fixed to the drive shaft 12, and the drive shaft 12 and the magnetic steel 112 move together. The stator 111 and the drive shaft 12 are free to allow the drive shaft 12 to move relative to the stator 111.

The driving body 11 further includes at least one fixing member 113 and a supporting member 114, the fixing member 113 fixes the stator 111 to the supporting member 114, and the stator 111 and the supporting member 114 are stationary relative to each other.

The stator 111 includes at least a stator core 1111 and a coil 1112 wound around the stator core 1111.

The driving body 11 further includes a first mounting part 115 and a second mounting part 116, the first mounting part 115 and the second mounting part 116 are mounted at both ends of the supporting member 114, and both ends of the driving shaft 12 respectively pass through the first mounting part 115 and the second mounting part 116 and are fixed.

The first and second mounting

members

115 and 116 may be implemented as elastic materials, such as springs, which are deformed according to the telescopic movement of the driving shaft 12 and generate elastic restoring force in the opposite direction.

Further, in an example of the present invention, an elastic member 117 is disposed on one side of the magnetic steel 112, and the elastic member 117 is deformed by a force along with the linear motion of the magnetic steel 112 to generate a reverse elastic restoring force to urge the magnetic steel 112 to move in a reverse linear direction.

Two magnet steel 112's reverse both sides are set up respectively elastic component 117, so that when coil 1112 is led to the electric current of a direction, magnet steel 112 receives magnetic force to promote when moving along axial one direction, is located magnet steel 112 moving direction is ascending elastic component 117 atress deformation produces reverse elastic restoring force, impels magnet steel 112 is along axial reverse motion, the cooperation when coil 1112 is led to with reverse electric current, magnet steel 112 is impeld along axial reverse motion, reverse another elastic component 117 atress deformation produces reverse elastic restoring force, impels magnet steel 112 is along axial reverse motion. Therefore, the magnetic steel 112 linearly reciprocates in the axial direction in the engagement direction of the stator 111 and the elastic member 117.

The elastic piece 117 is arranged to assist the magnetic steel 112 to reciprocate reversely. It is understood that the elastic member 117 may also be provided to assist the magnetic steel 112 to reciprocate reversely.

Specifically, referring to a schematic diagram of the movement of the driving body 11 shown in fig. 5, the two magnetic steels 112 respectively generate N poles and S poles at two axial ends thereof, and the directions of the N poles and S poles generated by the two magnetic steels 112 are opposite. For convenience of description, from the perspective of fig. 5 and 6, the extending direction of the driving shaft 12 is defined as the upper direction, and the retracting direction of the driving shaft 12 is defined as the lower direction. The magnetic steel 112 above is set to generate an S pole at the end facing upward and an N pole at the end facing downward. The magnetic steel 112 below generates an N pole at the end facing upward and an S pole at the end facing downward.

When the coil 1112 is energized with a current in one direction, the stator 111 generates an N pole at an upward end and an S pole at a downward end. Due to the repulsion of the same poles and the attraction of the different poles, the magnetic steel 112 above is pushed upwards, and the magnetic steel 112 below is attracted upwards, so that the driving shaft 112 is driven to move upwards. I.e. the drive shaft 112 is in an extending movement.

With reference to fig. 6 another schematic view of the movement of the drive body 11 is shown. The coil 1112 is energized with a current in a reverse direction, the directions of the N pole and the S pole of the stator 111 are reversed, the S pole is generated at the end facing upward, the N pole is generated at the end facing downward, the magnetic steel 112 at the upper side is attracted downward and the magnetic steel 112 at the lower side is pushed downward due to the repulsion of the same poles and the attraction of the opposite poles, and the driving shaft 112 is further urged downward. I.e. the drive shaft 112 makes a retracting movement.

The driving shaft 112 reciprocates linearly to drive the pump body to work continuously by changing the current direction.

Finally, the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same, and the technical features in the respective technical solutions can be modified or replaced, or combined with each other, and any technical solutions without departing from the principle of the present invention should be included in the protection scope of the present invention.

Claims

1. Towards tooth ware operating device, its characterized in that includes:

2. The working mechanism of the dental irrigator of claim 1, wherein the drive body includes a first mounting part, a second mounting part and a support part, the first and second mounting parts being fixed to both ends of the support part, both ends of the drive shaft being fixed through the first and second mounting parts, respectively, to be held to the support part.

3. The working mechanism of the dental irrigator of claim 2 wherein said drive body further includes a fastener securing said stator to said support to maintain said stator and said support relatively stationary.

4. The working mechanism of the device as claimed in claim 1, wherein the driving body further comprises at least one elastic member disposed on at least one side of the magnetic steel, the elastic member being deformed by a force to generate an elastic restoring force to urge the magnetic steel to reciprocate linearly.

5. The working mechanism of the dental irrigator of claim 2, wherein at least one of said first mount and said second mount is made of a resilient material to elastically deform and resiliently return to urge said drive shaft to reciprocate linearly when subjected to a force.

6. The working mechanism of the water toothpick according to claim 1 wherein said magnetic steel is symmetrically disposed on both sides of said stator in an axial direction.

7. The working mechanism of the dental irrigator of any one of claims 1 to 6 wherein the pump body includes a fluid delivery assembly and a piston assembly movably mounted in the fluid delivery assembly to vary the state of the flow path of the fluid delivery assembly, wherein one end of the drive shaft extends into the piston assembly to drive the piston assembly in linear reciprocation.

8. The working mechanism of the dental irrigator of claim 7 wherein said fluid delivery assembly is provided with at least one inlet port and at least one outlet port, said piston moving linearly in one direction to open said inlet port and allow fluid to pass through said outlet port into the interior of said fluid delivery assembly, said piston moving linearly in an opposite direction to urge fluid linearly in a direction toward said outlet port to allow fluid to exit said fluid delivery assembly.

9. The working mechanism of a dental irrigator according to claim 8 wherein the inlet port is fitted with a first valve, the first valve being connected to the piston which moves linearly to control the first valve to switch between an open and a closed condition.

10. The working mechanism of the dental irrigator of claim 8 wherein the outlet is fitted with a second valve and the piston is driven by the linear motor to move toward the second valve to force fluid outwardly from the second valve.