CN216495768U - Working mechanism of tooth flushing device - Google Patents

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 is distributed on the side of the stator and connected with the driving shaft, 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 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.

Another advantage of the present invention is to provide a working mechanism of a dental irrigator, which has a simple structure and high transmission efficiency.

Another advantage of the present invention is to provide a working mechanism of a dental irrigator, in which the linear motor has a simple structure, the reciprocating motion of the pump body is promoted, the kinetic energy transmission efficiency is improved, and the manufacturing cost is reduced.

Another advantage of the present invention is to provide a working mechanism of a dental irrigator, wherein some parts of the linear motor are made of elastic material to assist the linear reciprocating motion of the driving shaft, thereby reducing the kinetic energy loss and improving the output efficiency.

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, wherein 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 is distributed on the side of the stator, the magnetic steel is connected to the driving shaft, and 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; 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 one embodiment of the present invention, the magnetic steel is disposed at a side of the stator, and the magnetic steel is distributed along an axial direction, wherein the stator includes at least one winding tooth and a pair of pole teeth, the winding tooth is located between the pole teeth facing the magnetic steel, the winding tooth is wound, and N poles or S poles are respectively generated at the pole teeth and the winding tooth to interact with the magnetic steel to promote the magnetic steel to linearly reciprocate.

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 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 an embodiment of the present invention, the driving body further includes a connecting member, the magnetic steel is fixed to the connecting member, one end of the connecting member is mounted with the driving shaft to transmit kinetic energy of the magnetic steel to the driving shaft, so as to cause the driving shaft to linearly reciprocate, wherein both ends of the connecting member are respectively fixed to the first mounting member and the second mounting member.

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.

According to one embodiment of the present invention, the fluid delivery assembly comprises an inlet member, a flow member and an outlet member, wherein the inlet member, the flow member and the outlet member are sequentially communicated to form a fluid inlet, a fluid flow and a fluid outlet flow path.

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 an embodiment of the linear motor 10 provided by the present invention, the driving body 11 of the linear motor 10 includes a stator 111 and at least one magnetic steel 112, and the magnetic steel 112 is disposed at a side of the stator 111. The stator 111 includes at least one winding tooth 1111 and a pair of pole teeth 1112, the winding tooth 1111 is distributed between the pole teeth 1112. The stator 111 further includes a connecting body 1113, and the connecting body 1113 connects the teeth 1112, the winding teeth 1111 and the other teeth 1112, and for convenience of description, the extending direction of the driving shaft 12 is set to be an axial direction and a direction perpendicular to the axial direction is set to be a radial direction. The connecting body 1113 runs axially, and the winding teeth 1111 and the pole teeth 1112 run radially. The magnetic steel 112 is disposed in a radial direction of the stator 111 and distributed in an axial direction.

The driving body 11 further includes at least one connecting member 113, the magnetic steel 112 is installed on the connecting member 113, one end of the connecting member 113 is installed on the driving shaft 12, and the connecting member 113 connects the driving shaft 12 and the magnetic steel 112, so as to transmit the kinetic energy of the magnetic steel 112 to the driving shaft 12.

The driving body 11 further includes a first mounting part 114, a second mounting part 115 and a supporting part 116, the first mounting part 114 and the second mounting part 115 are respectively mounted at two ends of the supporting part 116, two ends of the connecting part 113 are respectively fixed to the first mounting part 114 and the second mounting part 115, and the driving shaft 12 extends outward from one of the first mounting part 114 and the second mounting part 115 and is connected to the pump body 20. The stator 111 is fixed to the support 116.

Wherein one or both of the first mounting element 114 and the second mounting element 115 are made of an elastic material that is elastically deformable with an elastic restoring force. When the driving shaft 12 moves in one direction, one or both of the first mounting element 114 and the second mounting element 115 is subjected to a force in one direction to generate a reverse elastic restoring force, and when the driving shaft 12 is subjected to a reverse force, the driving shaft 12 is urged to move in a reverse direction to change the moving direction.

The winding teeth 1111 are wound with a coil, and when a current is applied in one direction, an N-pole is generated at the end of the winding teeth 1111, and an S-pole is generated at the ends of the pole teeth 1112 on both sides. The magnetic steel 112 generates N pole and S pole toward the side of the gap between the teeth 1112 and 1111 and the other side of the gap between the teeth 1112 and 1111, and generates S pole and N pole in the opposite direction. Under the action of magnetic force, the magnetic steel 112 moves upward along the axial direction, so as to drive the connecting member 113 and the connected driving shaft 12 to move upward along the axial direction, that is, the driving shaft 12 makes an extending motion.

For convenience of description, from the perspective of fig. 3 to 6, the direction of movement of the drive shaft 12 toward the pump body 20 is defined as downward, and the opposite direction is defined as downward.

Changing the direction of the current passed through the coil, the magnetism generated by the stator 111 is changed, the winding teeth 1111 generates an S pole, the magnet 1112 generates an N pole, and the magnetic steel 112 is pushed to move axially downward to drive the driving shaft 12 to retract.

The drive shaft 112 is driven in a reciprocating linear motion by constantly changing the direction of the current supplied to the coil and changing the magnetic field.

The magnetic steel 112 has magnetic poles with ends facing between the teeth 1112 and 1111, the winding teeth 1111 and between the winding teeth 1111 and the other teeth 1112 from top to bottom in sequence, so that the magnetic steel 112 generates an N pole and/or an S pole which is attracted and/or pushed by the teeth 1112 and 1111, respectively, to cause the magnetic steel 112 to move linearly.

For example, the magnetic steel 112 is attracted to the winding teeth 1111 direction, and one of the pole teeth 1112 pushes the magnetic steel 112 to the winding teeth 1111 direction, because the magnetic steel 112 is attracted to the winding teeth 1111 direction by the magnetic steel 112, which is an N pole at the pole teeth 1112 and an S pole at the winding teeth 1111. When the coil is energized with a current in the opposite direction, the pole tooth 1112 is an S pole, and the winding tooth is an N pole, the magnetic steel 112 generates an S pole toward the end portion between the pole tooth 1112 and the winding tooth 1111, and the magnetic steel 112 moves linearly in the opposite direction.

The magnetic steel 112 may be a whole body, and generates magnetism in a portion facing to the gap between the winding teeth 1111 and the pole teeth 1112, and generates opposite magnetism in the back side.

The magnetic steel 112 may also be arranged in a segmented manner on the side of the stator 111, on the side of the gap between the winding teeth 1111 and the pole teeth 1112.

Finally, the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same, the technical features in the respective technical solutions may 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 (10)

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

the linear motor comprises a driving body and a driving shaft, wherein 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 is distributed on the side of the stator, the magnetic steel is connected to the driving shaft, and 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; 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.

2. The working mechanism of tooth-rinsing device as claimed in claim 1, wherein said magnetic steel is disposed on the side of said stator, said magnetic steel is distributed along the axial direction, wherein said stator comprises at least one winding tooth and a pair of pole teeth, facing said magnetic steel, said winding tooth is located between said pole teeth, said winding tooth is wound, and said pole teeth and said winding tooth respectively generate N pole or S pole to interact with said magnetic steel to promote the linear reciprocating motion of said magnetic steel.

3. The working mechanism of the dental irrigator of claim 2, 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.

4. The working mechanism of the dental irrigator of claim 3, wherein at least one of the first mount and the second mount is made of an elastic material to elastically deform and counter-restore when subjected to a force to cause the drive shaft to linearly reciprocate.

5. The working mechanism of a dental irrigator according to claim 3, wherein said drive body further comprises a connecting member, said magnetic steel being fixed to said connecting member, one end of said connecting member being fitted with said drive shaft to transmit kinetic energy of said magnetic steel to said drive shaft to cause said drive shaft to reciprocate linearly, wherein both ends of said connecting member are fixed to said first and second mounting members, respectively.

6. The working mechanism of the dental irrigator of any one of claims 1 to 5 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.

7. The working mechanism of the dental irrigator of claim 6 wherein said fluid delivery assembly is provided with at least one inlet port and at least one outlet port, said piston being linearly movable 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 being linearly movable in an opposite direction to urge fluid linearly in a direction toward said outlet port to allow fluid to exit said fluid delivery assembly.

8. The working mechanism of the water toothpick according to claim 7 wherein said inlet is fitted with a first valve, said first valve being connected to said piston, said piston moving linearly to control said first valve to switch between an open condition and a closed condition.

9. 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.

10. The working mechanism of the dental irrigator of claim 9 wherein said fluid delivery assembly includes an inlet member, a flow member and an outlet member, said inlet member, said flow member and said outlet member being in series to define fluid inlet, flow and outlet flow paths.

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