CN111839787A

CN111839787A - Electric toothbrush

Info

Publication number: CN111839787A
Application number: CN202010740331.4A
Authority: CN
Inventors: 徐小龙
Original assignee: Dongguan Silver Magnetic Magnetic Material Co ltd
Current assignee: Dongguan Silver Magnetic Magnetic Material Co ltd
Priority date: 2020-07-28
Filing date: 2020-07-28
Publication date: 2020-10-30
Anticipated expiration: 2040-07-28
Also published as: CN111839787B

Abstract

The invention belongs to the technical field of toothbrushes, and particularly relates to an electric toothbrush which comprises a handle body and a toothbrush head, wherein the handle body comprises a handle, a control panel, a power source and a power source, and the toothbrush head is arranged at the output end of the power source; the power source comprises a shell, a linkage shaft, a mechanical rotating force for driving the linkage shaft to rotate around the axis of the linkage shaft and an axial telescopic power for driving the linkage shaft to extend and retract along the axial direction of the linkage shaft; the toothbrush head comprises a rod part, a head part and bristles, the head part is provided with a liquid stirring piece and linear holes, the liquid stirring piece is arranged on the head part in a penetrating mode through the linear holes, the head part far away from one side of the bristles is dug to be provided with a water storage tank, the water storage tank is communicated with the linear holes, and the edge of the head part located on the same side of the water storage tank is provided with a flow guide notch communicated with the water storage tank. The electric toothbrush has the advantages that the toothbrush head has high-frequency vibration in multiple directions through the power source, the movable liquid stirring piece is additionally arranged on the head, and the gargle on the back of the head is sprayed to one side of the bristles through the linear hole, so that the electric toothbrush has the function of efficiently and comprehensively cleaning teeth.

Description

Electric toothbrush

Technical Field

The invention belongs to the technical field of toothbrushes, and particularly relates to an electric toothbrush.

Background

The toothbrush is an indispensable cleaning article in daily life. With the continuous advancement of technology, several powered toothbrushes are now on the toothbrush market, the advent of which has revolutionized the oral care field. The electric toothbrush is characterized in that an electric toothbrush head is arranged at the front end of a toothbrush handle, a power supply is arranged in the toothbrush handle, the power supply supplies power to a motor in the toothbrush to drive the toothbrush head to vibrate, and therefore a user is helped to achieve the effect of automatic tooth brushing. The specific operation mechanism is as follows: the electric toothbrush can lead the toothbrush head to generate high-frequency vibration through the rapid rotation or vibration of the motor core, instantly decompose the toothpaste into fine foam and deeply clean teeth gaps; meanwhile, the vibration of the brush hair can promote the blood circulation of the oral cavity and has a massage effect on the gum tissue.

The electric toothbrush in the prior art adopts the toothbrush head to install at the acoustic motor output, and the high frequency vibrations of its production are only in one direction of output shaft, produce high frequency vibrations at its radial direction usually, and need clean other local point positions and need realize with the help of external force, for example through the required clear local point position of manual shift transform, nevertheless move the in-process, it does not have the high frequency state in the direction of moving, must lead to the fact like this and reduces whole clean efficiency, reduces the customer and uses experience and feel. Moreover, because the head part of the toothbrush head with the existing structure is in a plate shape, the gargle contained in the mouth can only be in a natural flowing state in a local area for cleaning teeth, even if the bristles are vibrated for cleaning, the gargle has poor stirring effect on the gargle, the gargle at the teeth cleaning part can not be effectively stirred, and the gargle can not realize the effects of spraying, scouring and the like on the teeth cleaning part. Therefore, the search for an electric toothbrush with high efficiency, low cost, simple structure and strong practicability becomes an urgent research topic for upgrading and updating the electric toothbrush.

Disclosure of Invention

The invention aims to provide an electric toothbrush, and aims to solve the technical problems that the electric toothbrush in the prior art has poor cleaning effect, low efficacy, poor experience feeling and the like due to high-frequency vibration in only one direction, and the toothbrush head in the prior art is in a plate shape, so that gargle contained in the mouth can only be in a natural flowing state in a local area for cleaning teeth, and the gargle can not spray, wash and the like on the clean parts of the teeth.

In order to achieve the purpose, the embodiment of the invention provides an electric toothbrush, which comprises a handle body and a toothbrush head, wherein the handle body comprises a handle, a control panel embedded on the handle, and a power source and a power supply which are arranged in an inner cavity of the handle, the power source is electrically connected with the power supply, and the toothbrush head is arranged at the output end of the power source.

Optionally, the power source includes a housing with an opening at one end, a linkage shaft passing through the other end of the housing and movably connected to the housing, a mechanical turning force surrounding the linkage shaft and disposed in an inner cavity of the housing, and an axial telescopic power driving the linkage shaft to extend and retract along an axial direction of the linkage shaft, and the mechanical turning force drives the linkage shaft to rotate around an axis of the linkage shaft. The structure design realizes that the toothbrush head arranged at the output end of the universal driving shaft has composite motion of rotating around the shaft and stretching along the shaft.

Optionally, the axial telescopic power is located on the linkage shaft on the opening side of the housing, and the axial telescopic power comprises a plastic tailstock sleeved with the opening end of the housing, a magnet group arranged on the linkage shaft and an electromagnet arranged on the plastic tailstock at a certain distance from the magnet group, wherein the electromagnet and the magnet group generate opposite attraction or same repulsion through generating magnetic induction lines which are alternately changed, so that the linkage shaft can perform telescopic motion relative to the housing. The structure design adopts the magnetic force effect to realize the telescopic motion of the linkage shaft along the axial direction.

Optionally, the toothbrush head is arranged at the output end of the linkage shaft and comprises a rod part, a head part arranged at one end of the rod part and bristles arranged on one side of the head part; the head part is provided with a liquid stirring sheet and a linear hole, and the liquid stirring sheet penetrates through the head part through the linear hole and is movably connected with the head part; the head part far away from one side of the brush hair is dug to be provided with a water storage tank which is communicated with the linear hole, and the edge of the head part which is positioned at the same side of the water storage tank is provided with a flow guide notch communicated with the water storage tank. The structural design enables the gargle liquid on the back of the head to be sprayed to one side of the brush hair through the linear hole, and the functions of spraying, flushing and the like on the tooth cleaning part are realized by combining the stirring effect of the liquid stirring piece.

Optionally, the magnet assembly comprises a connector and a magnet; the connecting piece is arranged on the end opening of the universal driving shaft close to the plastic tailstock, the magnet is embedded in the connecting piece, and the magnet and the universal driving shaft are arranged coaxially.

Optionally, the magnet assembly includes iron shims and powerful magnets arranged alternately and coaxially.

Optionally, wear-resistant rings arranged coaxially are respectively fixedly arranged on the housing and the plastic tailstock, and two return springs are arranged between the two wear-resistant rings; and two ends of the linkage shaft respectively penetrate through the reset spring and the wear-resistant circular ring in sequence and are movably connected with the wear-resistant circular ring. The wear-resistant ring with the structural design has the function of strengthening the wear resistance of the universal driving shaft, and the reset spring has the function of facilitating the reset of the auxiliary universal driving shaft.

Optionally, a telescopic shaft rotatably connected with the linkage shaft is arranged at the end of the linkage shaft, and the magnet group comprises two magnets which are perpendicular to the axial direction of the telescopic shaft and have opposite polarities.

Optionally, wear-resistant rings arranged coaxially are fixedly arranged on the outer shell and the plastic tailstock respectively, one end of the linkage shaft and one end of the telescopic shaft penetrate through the wear-resistant rings arranged correspondingly respectively, and the other ends of the linkage shaft and the telescopic shaft are connected coaxially in a rotating manner, so that the linkage shaft and the telescopic shaft are movably connected with the wear-resistant rings arranged correspondingly; the end parts of the universal driving shaft and the telescopic shaft, which are close to the wear-resistant circular ring, are respectively sleeved with a return spring, and the telescopic shaft and the mechanical rotating force are between the two return springs. The wear-resistant ring with the structural design has the function of strengthening the wear resistance of the universal driving shaft, and the reset spring has the function of facilitating the reset of the auxiliary universal driving shaft.

Optionally, the mechanical turning force comprises a rotor assembly with magnetic material built in and a stator assembly wrapping the rotor assembly. The structure design realizes the pivoting motion of the linkage shaft around the shaft.

Optionally, the stator assembly includes a stator core wrapping the rotor assembly and a coil wound around the stator core, and the stator assembly drives the rotor assembly to rotate back and forth at a predetermined amplitude by interaction between magnetic transformation and a magnetic material of the rotor assembly.

Optionally, the rotor assembly includes the universal driving shaft, a rotor core sleeved on the universal driving shaft, and two sets of magnetic stripe groups symmetrically disposed on the arc surface of the rotor core, where each magnetic stripe group includes two magnetic stripes with opposite magnetism. The structure design realizes the reciprocating rotation of the linkage shaft at a preset angle through the interaction of the two magnetic strips with opposite magnetism and the stator component with changed magnetism.

Optionally, the stator core is formed by two sets of split stators symmetrically arranged, and a cross section of each split stator is of an E-shaped structure and is arranged in interval correspondence with the magnetic stripe set. This structural design can provide a larger installation space for the stator assembly.

Optionally, the coils are two groups, and the two groups of coils are respectively arranged on the pole teeth of the separated stator, and the pole teeth are located at the middle line positions of the magnetic strip groups at the corresponding positions. The structural design realizes the stability of the universal driving shaft in the rotation process.

Optionally, the liquid stirring piece extends along the length direction thereof to form an installation lug, the linear hole orifices positioned on the same side of the water storage tank extend along the length direction thereof to form an installation groove, and the linear hole orifices positioned on the same side of the bristles are arranged in a horn-shaped structure; the mounting groove with installation system ear phase-match sets up, and both have predetermined clearance. This structural design realizes stir the liquid piece and stir gargle along with concrete vibrations condition is nimble, and be the horn mouth structure linear hole drill way makes through linear hole flow to the gargle of brush hair side is the jet type, strengthens the dynamics of erodeing the clean position of tooth.

Optionally, the ratio of the height of the part of the liquid stirring piece protruding out of the head part and the height of the bristles, which are positioned on the same side of the bristles, ranges from 1/3 to 1/2, and the liquid stirring piece positioned on the same side of the water storage tank does not protrude out of the bottom surface of the water storage tank; and the position on the liquid stirring sheet, which is close to the mounting lug, is provided with a resistance reducing hole. This structural design satisfies when stirring the gargle liquid piece self rigidity ensure to stir the effect, and prevent clean in-process the scratch of stirring the liquid piece.

One or more technical solutions in the electric toothbrush provided by the embodiment of the present invention have at least one of the following technical effects:

1. the magnet group is arranged on the linkage shaft, the plastic tailstock is provided with the electromagnet which is spaced from the magnet group by a certain distance, and two ends of the linkage shaft respectively penetrate through the two wear-resistant circular rings and are movably connected with the wear-resistant circular rings; work as during the pulse change electric current is imported to the electro-magnet, the change takes place in turn in the electro-magnet magnetic field, with magnet group produces the effect that opposite sex attracted or like sex repelled mutually and realizes the universal driving shaft for telescopic motion is done to the shell, combines mechanical turning force drive the universal driving shaft rotates around its axis, makes the existing gyration wobbling high-frequency vibration of output of universal driving shaft has flexible high-frequency vibration again, realizes installing in the toothbrush head of universal driving shaft output has the high-frequency vibration of a plurality of directions, has improved the clean efficiency of this electric toothbrush, reaches the purpose of high-efficient, clean tooth comprehensively, has promoted the customer and has used the experience sense.

2. The stator core is formed by two groups of separated stators which are symmetrically arranged, the section of each separated stator is of an E-shaped structure, and the horizontal plane joint of the two groups of separated stators is fixed by welding; the stator core has the characteristics of compact structure, convenience for providing larger installation space, more miniaturization in occupied size, more stable overall structure and the like. In addition, the coil winding in on the utmost point tooth of disconnect-type stator, the circular arc side length of coil surpasss stator core, just the non-traditional right angle type of coil, both sides have the great circular arc transition for the power of mechanical turning force is stronger, further strengthens gyration wobbling high frequency vibration effect.

3. The liquid stirring piece penetrates through the head part through the linear hole, a water storage tank communicated with the linear hole is dug in the head part at one side far away from the bristles, a flow guide notch communicated with the water storage tank is formed in the edge of the head part at the same side of the water storage tank, and the orifice of the linear hole at the same side of the bristles is arranged in a horn-shaped structure; this structural design passes through it locates to stir the liquid piece activity the head, just the rinse solution warp at the head back the linear hole sprays extremely brush hair one side, stir the liquid piece and stir and be in the rinse solution in the brush hair region realizes that the rinse solution sprays, erodees etc. effect to the clean position of tooth, combines again the effect is washhed in the diversified high-frequency vibration of brush hair, reaches the purpose of high-efficient, clean tooth comprehensively.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described 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 based on these drawings without inventive exercise.

FIG. 1 is a schematic view of an electric toothbrush according to one embodiment of the present invention;

FIG. 2 is a schematic view of a partially exploded view of a powered toothbrush according to one embodiment of the present invention;

FIG. 3 is a schematic diagram of a power source according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of a power source (without a housing) according to an embodiment of the present invention;

FIG. 5 is a schematic view of another perspective structure of a power source (without a housing) according to an embodiment of the present invention;

FIG. 6 is a partially exploded view of a mechanical rotational force provided by an embodiment of the present invention;

FIG. 7 is an enlarged partial view of FIG. 6 labeled A;

FIG. 8 is a simplified diagram of a rotation principle of a mechanical rotation force provided by an embodiment of the present invention;

FIG. 9 is an exploded view of a power source according to an embodiment of the present invention;

FIG. 10 is a simplified schematic diagram illustrating an axial expansion and contraction power principle provided by an embodiment of the present invention;

figure 11 is a schematic view of a toothbrush head configuration according to a first embodiment of the present invention;

FIG. 12 is a schematic view of a head structure according to an embodiment of the present invention;

FIG. 13 is an enlarged partial view of FIG. 12 labeled A;

FIG. 14 is a schematic structural view of a stirring plate according to a first embodiment of the present invention;

FIG. 15 is a schematic view of a head with another angle of view according to an embodiment of the present invention;

fig. 16 is a schematic view of a head with still another angle of view according to the first embodiment of the present invention;

fig. 17 is a schematic view of another installation direction structure of the liquid stirring sheet according to the first embodiment of the present invention;

FIG. 18 is a schematic view of a power source (without a housing) according to a second embodiment of the present invention;

FIG. 19 is an exploded view of a power source according to a second embodiment of the present invention;

fig. 20 is a simplified schematic view of an axial telescopic power principle provided in the second embodiment of the present invention;

FIG. 21 is an exploded view of a power source according to a third embodiment of the present invention;

fig. 22 is a simplified diagram of fig. 21, labeled C, showing the axial telescopic power driving principle in a partially enlarged manner, according to a third embodiment of the present invention;

wherein, in the figures, the respective reference numerals:

10-handle body, 11-handle, 12-control board, 13-power source, 131-shell, 1311-wear-resistant ring, 132-linkage shaft, 1321-reset spring, 133-mechanical rotating force, 1331-rotor component, 13311-rotor core, 13312-magnetic strip, 1332-stator component, 13321-stator core, 13322-coil, 13323-separated stator, 13324-pole tooth, 134-axial expansion force, 1341-plastic tailstock, 1342-magnet group, 13421-connecting piece, 13422-magnet, 13423-iron gasket, 13424-expansion shaft, 20-toothbrush head, 21-rod part, 22-head part, 221-liquid stirring piece, 2211-installation lug, 2212-resistance-reduction hole, 222-linear hole, 2221-installation groove, 2212-installation lug, 2212-resistance reduction hole, 222-linear hole, 2222-bell mouth structure, 223-water storage tank, 224-flow guide notch and 23-brush hair.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be illustrative of the embodiments of the present invention, and should not be construed as limiting the invention.

In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. Specific meanings of the above terms in the embodiments of the present invention can be understood by those of ordinary skill in the art according to specific situations.

As shown in fig. 1 and 2, the present invention provides an electric toothbrush, which comprises a handle body 10 and a toothbrush head 20, wherein the handle body 10 comprises a handle 11, a control panel 12 embedded in the handle, and a power source 13 and a power source 14 arranged in an inner cavity of the handle 11, the power source 13 is electrically connected with the power source 14, and the toothbrush head 20 is arranged at an output end of the power source 13.

Example one

As shown in fig. 3 and 4, the power source 13 includes a housing 131 with an opening at one end, a linkage shaft 132 penetrating through the other end of the housing and movably connected to the housing, a mechanical turning force 133 surrounding the linkage shaft 132 and disposed in an inner cavity of the housing 131, and an axial expansion power 134 driving the linkage shaft 132 to expand and contract along an axial direction thereof, wherein the mechanical turning force 133 drives the linkage shaft 132 to rotate around an axis thereof. This design allows the toothbrush head 20 mounted on the output end of the linkage shaft 132 to have a compound motion of pivoting around an axis and extending along an axis.

As shown in fig. 5, the mechanical rotating force 133 includes a rotor assembly 1331 with a magnetic material therein and a stator assembly 1332 wrapping the rotor assembly. In this embodiment, the stator assembly 1332 includes a stator core 13321 wrapping the rotor assembly 1331 and a coil 133322 wound on the stator core. Specifically, when the coil 13322 inputs a pulse-varying current, the magnetic field of the rotor assembly 1331 is changed alternately, and the rotor assembly 1331 is driven to rotate back and forth at a predetermined angle by the interaction between the magnetic change and the magnetic material of the rotor assembly 1331.

As shown in fig. 6 and 7, the stator core 13321 is formed by two sets of split stators 13323 that are symmetrically arranged, each split stator 13323 has an E-shaped cross section and is arranged corresponding to the magnetic strips 13312 at intervals; the horizontal plane joints of the two split stators 13323 are fixed by welding, so that the whole structure of the stator assembly 1332 is more stable. In the present invention, the section of each of the split stators 13323 is in an E-shaped structure, so that the stator assembly 1332 is convenient to provide a larger installation space, has a compact structure, occupies a smaller size, and can reduce the volume of the whole mechanical rotating force 133, further reduce the volume of the power source 13, and further reduce the volume of the electric toothbrush using the power source. In addition, the coil 13322 is fixed to the stator core 13321 by gluing after winding, so that the cost is lower and the noise is lower.

Further, the coils 13322 are provided in two sets, which are respectively disposed on the pole teeth 13324 of the split stator 13323, and the pole teeth are located on the middle line of the magnetic stripe set at the corresponding positions. In this embodiment, the coil 13322 is wound around the pole teeth of the split stator 13321, the length of the arc side of the coil 13322 exceeds the stator core 13321, and the coil 13322 is not a conventional right-angle type, and has large arc transitions on both sides, so that the power of the mechanical rotating force 133 is stronger. In addition, the pole teeth of the split stator 13323 are located at the middle line position of the magnetic strip group at the corresponding position, so that the stability of the linkage shaft 132 in the rotation process is improved.

As shown in fig. 7 and 8, the rotor assembly 1331 includes the linkage shaft 132, a rotor core 13311 sleeved on the linkage shaft 132, and two sets of magnetic stripe groups symmetrically disposed on an arc surface of the rotor core, where each magnetic stripe group includes two magnetic stripes 13312 with opposite magnetism. Specifically, a groove matched with the magnetic strip 13312 is dug on the arc surface of the rotor core 13311. The working principle of realizing the reciprocating rotation of the linkage shaft 132 at a preset angle is as follows: when the coil 13322 inputs a positive pulse current, the stator core 13321 near one end of the magnetic strip 13312 is N-pole, and at this time, one of the magnetic strip sets is N-pole and the magnetic strip 13312 is repelled to drive the linkage shaft 132 to rotate, and at the same time, the other magnetic strip 13312 is N-pole and the magnetic strip 13312 is attracted to drive the linkage shaft 132 to rotate only in the direction of the magnetic strip 13312 which is S-pole; when negative pulse current is input into the coil 13322, the stator core 13321 near one end of the magnetic strip group is S-pole, at this time, one of the magnetic strip groups is N-pole and the magnetic strip 13312 is attracted thereto, so that the linkage shaft 132 is driven to rotate, and at the same time, the other magnetic strip 13312 is S-pole and the magnetic strip 13312 is repelled thereto, so that the linkage shaft 132 can only rotate in the direction of the N-pole and the magnetic strip 13312, thereby completing the single back-and-forth rotation of the linkage shaft 132, and when the pulse current input into the coil 13322 changes again, the reciprocating high-frequency rotating motion of the linkage shaft 132 according to the above motion can be realized.

As shown in fig. 9 and 10, the axial telescopic power 134 is located on the linkage shaft 132 at the opening side of the casing 131, and includes a plastic tailstock 1341 sleeved with the opening end of the casing 131, a magnet set 1342 disposed on the linkage shaft 132, and an electromagnet 1343 disposed on the plastic tailstock 1341 and spaced from the magnet set by a certain distance. Further, the magnet set 1342 includes a connecting member 13421 and a magnet 13422. Specifically, the electromagnet 1343 is fixedly arranged in an inner cavity of the plastic tailstock 1341, a connecting piece 13421 is arranged at a port of the linkage shaft 132 close to the plastic tailstock 1341, the magnet 13422 is embedded in the connecting piece 13421, and the magnet set 1342 and the linkage shaft 132 are coaxially arranged. The electromagnet 1343 and the magnet set 1342 generate the action of different attraction or same repulsion through magnetic transformation to realize the telescopic motion of the linkage shaft 132 relative to the shell 131; the specific telescopic motion principle is as follows: when the electromagnet 1343 inputs a positive pulse current, one end of the electromagnet 1343 close to the magnet set 1342 is N-pole, and if one end of the magnet set 1342 close to the electromagnet 1343 is N-pole, the linkage shaft 132 is driven to move away from the electromagnet 1343 due to the action force of like polarity repulsion, and generates an extending motion relative to the housing 131; when the electromagnet 1343 inputs a negative pulse current, and one end of the electromagnet 1343 close to the magnet set 1342 is S-pole, the linkage shaft 132 is driven to move close to the electromagnet 1343 due to the attraction force of opposite polarities and generates retraction movement relative to the housing 131, so as to complete the single telescopic movement of the linkage shaft 132, and when the coil 13322 inputs a pulse current in an alternating manner, the reciprocating high-frequency telescopic movement of the linkage shaft 132 according to the above actions can be realized. Of course, to enhance the power of the extension and retraction of the linkage shaft 132.

As shown in fig. 9, the shell 131 and the plastic tailstock 1341 are respectively and fixedly provided with a wear-resistant ring 1311 coaxially disposed, two return springs 1321 are disposed between the wear-resistant rings, and each return spring 1321 is disposed between the wear-resistant ring 1311 and the mechanical rotation force 133. Specifically, two ends of the linkage shaft 132 respectively penetrate through the return spring 1321 and the wear-resistant circular ring 1311 in sequence and are movably connected with the wear-resistant circular ring 1311; the wear-resistant ring 1311 reinforces the wear-resistant performance of the linkage shaft 132, and the return spring 1321 facilitates the quick return function of the linkage shaft 132 in the magnetic change process of the electromagnet 1343.

As shown in FIG. 11, the toothbrush head 20 is provided at the output end of the linkage shaft 132 and includes a shaft 21, a head 22 at one end of the shaft, and bristles 23 on one side of the head. In the product design of the invention, in order to improve the comfort and the cleaning effect of the toothbrush head in the cleaning process, the bristles 23 are made of two materials with medium-hard and soft handfeel, the head 22 is in an elliptic cylinder structure, and the edges of the head 22 are in arc transition, so that the comfortable requirement is met, and the oral cavity of a user is prevented from being damaged due to the unreasonable design of the head 22 in the cleaning process.

As shown in fig. 12 and 13, the head 22 is provided with a liquid stirring sheet 221 and a linear hole 222, the linear hole is arranged along a direction parallel to the length direction of the rod 21, and the liquid stirring sheet 221 is arranged on the head 22 through the linear hole 222 and movably connected with the head 22. In this embodiment, the liquid stirring sheet 221 extends along the length direction thereof to form an installation tab 2211, and the linear hole 222 located on the same side of the water storage tank 223 extends along the length direction thereof to form an installation groove 2221; the mounting groove 2221 is matched with the mounting lug 2211, and the mounting groove 2221 and the mounting lug 2211 have a preset gap. Specifically, be equipped with the profile modeling cylinder on installation system ear 2211, just be equipped with on mounting groove 2221 with this profile modeling cylinder assorted cylindrical groove, and leave predetermined clearance between this cylindrical groove and the profile modeling cylinder, be convenient for when stirring liquid piece 221 installs, and the profile modeling main part and the cylindrical groove that match each other form limiting displacement, can prevent it appears from stirring liquid piece 221 cleaning in-process deformation the phenomenon that the head breaks away from makes it stir liquid piece 221 along with concrete vibrations condition is nimble to be in the gargle in brush hair 23 region to play the reinforcing effect to the clean position of tooth.

As shown in fig. 14, the liquid stirring sheet 221 of the present embodiment has a resistance-reducing hole 2212 near the mounting lug 2211. Specifically, in the high-frequency vibration of the driving force of the electric toothbrush, the rinse solution stirring sheet 221 provides a reaction force to the rinse solution stirring sheet to hinder the rinse solution stirring sheet from stirring the rinse solution during the process of stirring the rinse solution, and in this embodiment, the resistance of the rinse solution stirring sheet 221 to stirring the rinse solution can be reduced by forming the plurality of the drag reduction holes 2212 in the rinse solution stirring sheet 221. In addition, the resistance reduction holes 2212 can relieve deformation of the liquid stirring sheets 221 in the process of stirring the mouthwash, and the effect of strengthening stirring of the mouthwash is achieved.

As shown in fig. 15, in the embodiment, a water storage groove 223 is dug in the head 22 on the side far away from the brush 23, the water storage groove is communicated with the linear hole 222, and a flow guiding notch 224 communicated with the water storage groove 223 is formed in the edge of the head 22 on the same side as the water storage groove 223. In this embodiment, the water storage tank 223 and the flow guiding notch 224 communicated with the water storage tank are additionally arranged on the head 22, so that the rinsing liquid on the back of the head 22 can be collected and sprayed to one side of the bristle 23 region through the linear hole 222, and the effects of spraying and flushing the tooth cleaning part can be realized by combining the stirring effect of the liquid stirring piece 221. This structural design solves current toothbrush head and is the plate-shaped because of toothbrush head, and the gargle that contains in the mouth can only be in the natural flow state in the local region of wasing the tooth, can not effectively stir the drawback of the gargle of the clean position of tooth.

As shown in fig. 16, in order to achieve the purpose of enhancing the washing force to the tooth cleaning part by spraying the washing liquid flowing to the brush 23 side through the linear holes 222, the opening of the linear holes 222 on the same side as the brush 23 is arranged in a trumpet structure 2222 in the present embodiment.

Furthermore, the liquid stirring sheet 221 in this embodiment is made of a soft plastic material; further, the ratio of the height of the liquid stirring piece 221 protruding from the head 22 on the same side as the bristles 23 to the height of the bristles 23 is 1/3-1/2. In this embodiment, the liquid stirring sheet 221 made of soft plastic material is convenient for installation and can better meet the requirement of stirring the rinse liquid; the height of the portion of the liquid stirring piece 221 protruding from the head 22 is required to satisfy the rigidity requirement of the liquid stirring piece 221 when stirring the mouthwash, so as to ensure the stirring effect.

As shown in fig. 13, in order to prevent the liquid stirring sheet 221 from scratching the oral cavity of the user during the cleaning process of the toothbrush head, this embodiment is implemented by a design that the liquid stirring sheet 221 on the same side of the water storage groove 223 does not protrude from the bottom surface of the water storage groove 223.

As shown in fig. 17, the linear holes 222 may be disposed along a direction perpendicular to the length direction of the shaft 21, which may be selected according to the driving force of the specific electric toothbrush, such as the oscillating high frequency vibration around the shaft or the stretching high frequency vibration, to facilitate smooth agitation of the liquid stirring sheet and the cleaning and washing effects of the agitated rinse liquid on the tooth cleaning portion.

Example two

As shown in fig. 3 and 18, the power source 13 includes a housing 131 with an opening at one end, a linkage shaft 132 penetrating through the other end of the housing and movably connected to the housing, a mechanical turning force 133 surrounding the linkage shaft and disposed in an inner cavity of the housing 131, and an axial expansion power 134 driving the linkage shaft 132 to expand and contract along an axial direction thereof, wherein the mechanical turning force 133 drives the linkage shaft 132 to rotate around an axis thereof. This design allows the toothbrush head 20 mounted on the output end of the linkage shaft 132 to have a compound motion of pivoting around an axis and extending along an axis.

As shown in fig. 19 and 20, the axial telescopic power 134 is located on the linkage shaft 132 at the opening side of the casing 131, and includes a plastic tailstock 1341 sleeved with the opening end of the casing 131, a magnet set 1342 disposed on the linkage shaft 132, and an electromagnet 1343 disposed on the plastic tailstock 1341 and spaced from the magnet set by a certain distance; the magnet assembly 1342 includes iron pads 13423 and magnets 13422 arranged alternately and coaxially. In this embodiment, the electromagnet 1343 generates an alternating magnetic induction line, and generates an opposite attraction or an opposite repulsion with the magnet set 1342 to realize the telescopic motion of the linkage shaft 132 relative to the housing 131. The specific telescopic motion principle is as follows: the two magnets 13422 are separated by three iron spacers 13423, wherein the two magnets 13422 are arranged in a left N-pole and right S-pole magnetic configuration; when the electromagnetic coil of the electromagnet 1343 inputs a positive pulse current, the iron gasket 13423 is magnetized to form a left N-pole and a right S-pole magnetism, and the annular magnet set 1342 is driven to move relative to the electromagnet 1343 and generate an extending motion relative to the housing 131 due to the action force of like magnetic repulsion; when negative pulse current is input to the electromagnetic coil of the electromagnet 1343, the iron gasket 13423 is magnetized to form left S-pole and right N-pole magnetism, the magnet set 1342 is driven to move relative to the electromagnet 1343 by the action force of opposite repulsion, and the magnet set generates retraction motion relative to the housing 131, so that the single telescopic motion of the linkage shaft 132 is completed, and when the pulse current input to the electromagnetic coil of the electromagnet 1343 is changed alternately, the reciprocating high-frequency telescopic motion of the linkage shaft 132 according to the above actions can be realized. Of course, the magnet is a strong magnet, which also serves to strengthen the power of the extension and retraction of the linkage shaft 132.

As shown in fig. 19, the shell 131 and the plastic tailstock 1341 are respectively and fixedly provided with a coaxially disposed wear-resistant ring 1311, two return springs 1321 are disposed between the two wear-resistant rings, and the magnet assembly 1342 and the mechanical rotating force 133 are disposed between the two return springs 1321. Specifically, two ends of the linkage shaft 132 respectively penetrate through the return spring 1321 and the wear-resistant circular ring 1311 in sequence and are movably connected with the wear-resistant circular ring 1311. The wear-resistant ring 1311 reinforces the wear-resistant performance of the linkage shaft 132, and the return spring 1321 facilitates the quick return function of the linkage shaft 132 in the magnetic change process of the electromagnet 1343. Certainly, in order to improve the smoothness of the linkage shaft 132 in the extending and retracting process, in this embodiment, a material guiding block is disposed at the end of the linkage shaft 132, and the plastic tailstock 1341 is provided with a material guiding hole matched with the plastic tailstock 1341.

It should be noted that the structure of the mechanical rotating force 133 and the structure of the toothbrush head 20 in this embodiment are the same as those in the first embodiment, and therefore, the description thereof is omitted.

EXAMPLE III

As shown in fig. 21 and 22, the axial telescopic power 134 is located on the linkage shaft 132 at the opening side of the casing 131, and includes a plastic tailstock 1341 sleeved with the opening end of the casing 131, a magnet set 1342 disposed on the linkage shaft 132, and an electromagnet 1343 disposed on the plastic tailstock 1341 and spaced from the magnet set by a certain distance; the end of the linkage shaft 132 is provided with a telescopic shaft 13424 rotatably connected therewith, and the magnet set 1342 comprises two magnets 13422 which are perpendicular to the axial direction of the telescopic shaft and have opposite polarities. Specifically, the electromagnets 1343 are embedded in the plastic tailstock 1341, and are symmetrically disposed with respect to the two magnets 13422, the electromagnets 1343 are located at a center line of the two magnets 13422, and the electromagnets 1343 and the magnets 13422 generate different attraction or same-polarity repulsion through magnetic transformation to realize the telescopic motion of the linkage shaft 132 with respect to the housing 131. The specific motion principle is as follows: for example, the magnet 13422 on the left side is an upper N pole and a lower S pole, the magnet 13422 on the right side is an upper S pole and a lower N pole, when a positive pulse current is input to the two electromagnets 1343, an S pole magnetic property is formed at one end of the electromagnet 1343 above and close to the two magnets 13422, and an S pole magnetic property is formed at one end of the electromagnet 1343 below and close to the two magnets 13422, so that the telescopic shaft 13424 is driven to move relative to the electromagnet 1343 along the axial direction thereof due to the acting forces of like-pole repulsion and opposite-pole attraction, that is, the linkage shaft 132 is caused to contract relative to the housing 131; when the electromagnet 1343 inputs a negative pulse current, N-pole magnetism is formed above the two magnets 13422 and at one end of the electromagnet 1343 close to the two magnets 13422, and S-pole magnetism is formed below the two magnets 13422 and at one end of the electromagnet 1343 close to the two magnets 13422, so that the telescopic shaft 13424 is driven to move along the axial direction thereof relative to the electromagnet 1343 by the acting force of like-polarity repulsion and opposite-polarity attraction, that is, the linkage shaft 132 is caused to extend relative to the housing 131; thereby completing the single telescopic motion of the linkage shaft 132, and when the pulse current input by the electromagnet 1343 changes alternately, the reciprocating high-frequency telescopic motion of the linkage shaft 132 according to the above actions can be realized. Of course, the magnet 13422 is preferably a strong magnet to enhance the power of the extension and contraction of the linkage shaft 132.

As shown in fig. 21, wear-resistant rings 1311 disposed coaxially are respectively fixed on the housing 131 and the plastic tailstock 1341, one end of the linkage shaft 132 and one end of the telescopic shaft 13424 respectively pass through the wear-resistant rings 1311 disposed correspondingly, and the other ends of the linkage shaft 132 and the telescopic shaft 13424 are coaxially and rotatably connected, so that the linkage shaft 132 and the telescopic shaft 13424 are movably connected with the wear-resistant rings 1311 disposed correspondingly, and the wear resistance of the linkage shaft 132 is enhanced. In addition, the ends of the linkage shaft 132 and the telescopic shaft 13424 close to the wear-resistant ring 1311 are respectively sleeved with a return spring 1321, the telescopic shaft 13424 and the mechanical rotating force 133 are between the two return springs 1321, and the structural design has the function of assisting the linkage shaft 132 to quickly return along the axial direction in the magnetic change process of the electromagnet 1343. Certainly, in order to improve the smoothness of the telescopic shaft 13424 in the telescopic process, in this embodiment, a material guiding block is disposed at the end of the telescopic shaft 13424, and the plastic tailstock 1341 is disposed with a material guiding hole matching with the material guiding block.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. An electric toothbrush comprises a handle body and a toothbrush head, wherein the handle body comprises a handle, a control panel embedded on the handle, and a power source and a power supply which are arranged in an inner cavity of the handle, the power source is electrically connected with the power supply, and the toothbrush head is arranged at the output end of the power source; the method is characterized in that: the power source comprises a shell with an opening at one end, a linkage shaft which penetrates through the other end of the shell and is movably connected with the shell, a mechanical rotating force which surrounds the linkage shaft and is arranged in an inner cavity of the shell, and an axial telescopic power which drives the linkage shaft to stretch along the axial direction of the linkage shaft, wherein the mechanical rotating force drives the linkage shaft to rotate around the axis of the linkage shaft;

the axial telescopic power is positioned on the linkage shaft at the opening side of the shell and comprises a plastic tailstock sleeved with the opening end of the shell, a magnet group arranged on the linkage shaft and an electromagnet arranged on the plastic tailstock at a certain distance from the magnet group, wherein the electromagnet and the magnet group generate opposite attraction or same repulsion to realize telescopic motion of the linkage shaft relative to the shell by generating alternately changed magnetic induction lines;

the toothbrush head is arranged at the output end of the universal driving shaft and comprises a rod part, a head part arranged at one end of the rod part and bristles arranged on one side of the head part; the head part is provided with a liquid stirring sheet and a linear hole, and the liquid stirring sheet penetrates through the head part through the linear hole and is movably connected with the head part; the head part far away from one side of the brush hair is dug to be provided with a water storage tank which is communicated with the linear hole, and the edge of the head part which is positioned at the same side of the water storage tank is provided with a flow guide notch communicated with the water storage tank.

2. The electric toothbrush of claim 1, wherein: the magnet group comprises a connecting piece and a magnet; the connecting piece is arranged on the end opening of the universal driving shaft close to the plastic tailstock, the magnet is embedded in the connecting piece, and the magnet and the universal driving shaft are arranged coaxially.

3. The electric toothbrush of claim 1, wherein: the magnet group comprises iron gaskets and powerful magnets which are alternately and coaxially arranged.

4. The electric toothbrush according to claim 2 or 3, wherein: the shell and the plastic tailstock are respectively and fixedly provided with wear-resistant rings which are coaxially arranged, and two return springs are arranged between the two wear-resistant rings; and two ends of the linkage shaft respectively penetrate through the reset spring and the wear-resistant circular ring in sequence and are movably connected with the wear-resistant circular ring.

5. The electric toothbrush of claim 1, wherein: the end of the linkage shaft is provided with a telescopic shaft which is rotationally connected with the linkage shaft, and the magnet group comprises two magnets which are perpendicular to the axial direction of the telescopic shaft and have opposite polarities.

6. The powered toothbrush as defined in claim 5, wherein: wear-resistant rings which are coaxially arranged are fixedly arranged on the shell and the plastic tailstock respectively, one ends of the linkage shaft and the telescopic shaft penetrate through the wear-resistant rings which are correspondingly arranged respectively, and the other ends of the linkage shaft and the telescopic shaft are coaxially and rotatably connected, so that the linkage shaft and the telescopic shaft are movably connected with the wear-resistant rings which are correspondingly arranged;

the end parts of the universal driving shaft and the telescopic shaft, which are close to the wear-resistant circular ring, are respectively sleeved with a return spring, and the telescopic shaft and the mechanical rotating force are between the two return springs.

7. The electric toothbrush of claim 1, wherein: the mechanical rotating force comprises a rotor assembly with a built-in magnetic material and a stator assembly wrapping the rotor assembly; the stator component comprises a stator core wrapping the rotor component and a coil wound on the stator core, and the stator component drives the rotor component to rotate in a reciprocating mode in a preset amplitude through interaction of magnetic transformation and a magnetic material of the rotor component;

the rotor assembly comprises the universal driving shaft, a rotor core sleeved on the universal driving shaft, and two magnetic strip groups symmetrically arranged on the arc surface of the rotor core, wherein each magnetic strip group comprises two magnetic strips with opposite magnetism.

8. The powered toothbrush as defined in claim 7, wherein: the stator core is formed by two groups of separated stators which are symmetrically arranged, the section of each separated stator is of an E-shaped structure, and the separated stators and the magnetic strip groups are arranged at intervals and correspondingly; the coils are two groups and are respectively arranged on the pole teeth of the separated stator, and the pole teeth are positioned on the middle line position of the magnetic strip group at the corresponding position.

9. The electric toothbrush of claim 1, wherein: the liquid stirring piece extends along the length direction to form an installation lug, the linear hole orifices positioned on the same side of the water storage tank extend along the length direction to form an installation groove, and the linear hole orifices positioned on the same side of the bristles are arranged in a horn-shaped structure; the mounting groove with installation system ear phase-match sets up, and both have predetermined clearance.

10. The powered toothbrush as defined in claim 9, wherein: the proportion range of the height of the part of the liquid stirring piece protruding out of the head part and the height of the bristles, which are positioned on the same side of the bristles, is 1/3-1/2, and the liquid stirring piece positioned on the same side of the water storage tank does not protrude out of the bottom surface of the water storage tank; and the position on the liquid stirring sheet, which is close to the mounting lug, is provided with a resistance reducing hole.