CN212490222U

CN212490222U - Electric toothbrush and motor and machine dabber thereof

Info

Publication number: CN212490222U
Application number: CN202020466110.8U
Authority: CN
Inventors: 杨岭; 褚素娟; 陈成章
Original assignee: Ningbo Here Mega Electrical Appliance Co ltd
Current assignee: Ningbo Here Mega Electrical Appliance Co ltd
Priority date: 2020-04-02
Filing date: 2020-04-02
Publication date: 2021-02-09
Anticipated expiration: 2030-04-02

Abstract

The utility model discloses an electric toothbrush, a motor thereof and a core shaft of the motor, wherein the core shaft comprises a shaft body, the tail end of the shaft body is connected with a torsion shaft in series, a magnet bin hole which is communicated up and down is arranged in the middle section of the shaft body, the magnet bin hole is in a rectangle shape which extends along the axial direction of the shaft body, a rectangular magnet is arranged in the magnet bin hole, and magnet positioning separation blades for preventing the magnet from moving up and down are fixedly arranged on the upper side and the lower side of the magnet bin hole; and reinforcing ribs which are integrated with the torsion shaft are arranged in the side wall of the magnet bin hole. The enough torsional force of core axle had both been guaranteed to rectangle magnet, had reduced the width and the height of magnet again for the whole width of core axle and height dimension all have had obvious reduction, have realized the purpose that electric toothbrush brush holder attenuate becomes light, carry and use more lightly, and the toothbrush also is difficult to empty when charging, has better safety guarantee. The reinforcing ribs are arranged in the side wall of the magnet bin hole, so that the thickness of the side wall of the magnet bin hole can be reduced as much as possible, and the width of the machine core shaft is further reduced.

Description

Electric toothbrush and motor and machine dabber thereof

Technical Field

The utility model relates to an electric toothbrush and motor and core axle of motor thereof.

Background

The electric toothbrush can clean teeth by the high-frequency vibration of the brush head generated by the quick vibration of the motor. At present, a common electric toothbrush is composed of two independent units, namely a brush head and a brush holder, the brush head and the brush holder are connected together when the electric toothbrush is used, wherein the brush holder is not only a holding part of the electric toothbrush, but also a power source of the brush head, and the brush holder is mainly composed of a brush holder shell, and a motor and a battery which are installed in the brush holder shell.

Chinese patent document CN204501066U discloses an electric toothbrush power structure, which comprises a movement main body and an integrally arranged battery compartment, wherein the movement main body comprises a movement body and a transmission shaft, an iron core coil composed of horseshoe-shaped silicon steel sheets and enameled wires wound on the horseshoe-shaped silicon steel sheets is installed at the bottom of the movement body, the transmission shaft is composed of a transmission limiting shaft, a transmission shaft main body, a torsion shaft and a cuboid positioning block which are fixedly connected in sequence from the front to the back, magnets are installed in magnet grooves in the transmission shaft main body, the upper and lower sides of the magnets are covered by iron sheets, the transmission shaft is supported on the movement body through bearings, and the transmission shaft main body is located in the grooves of the.

In this structure, what the dress adopted at the interior magnet of transmission shaft main part is the cylinder structure, under the sufficient prerequisite of torsional force about guaranteeing the transmission shaft, the diameter of cylinder magnet just can not set up is too little, if want further to reduce the radial dimension of transmission shaft main part to make electric toothbrush brush holder attenuate will be with reducing the torsional force as the cost, can reduce vibration amplitude and vibration frequency so that influence clean tooth effect like this, so, the electric toothbrush's of this structure brush holder is thicker, the people that the hand is little use and to have the discomfort. In addition, the upper iron sheet and the lower iron sheet are directly placed in the positioning grooves of the transmission shaft main body and are not fixed with the transmission shaft main body, and vibration noise can be generated during working. The battery compartment that integrative set up is open state, though one side elasticity card carries out elasticity chucking location to the battery, but in electric toothbrush's use, if take place to collide with and fall and will lead to the battery not hard up, influence electric toothbrush's normal use.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a motor of an electric toothbrush with miniaturized radial dimension, so that a brush handle of the electric toothbrush becomes thin. And simultaneously, the utility model discloses still provide the core axle of this motor and use the electric toothbrush of this motor.

In order to achieve the above object, the utility model discloses electric toothbrush motor's core axle adopts following technical scheme: the core shaft of the electric toothbrush motor comprises a shaft body, wherein a torsion shaft is connected to the tail end of the shaft body in series, a magnet bin hole which is communicated up and down is formed in the middle section of the shaft body, the magnet bin hole is rectangular and extends along the axial direction of the shaft body, a rectangular magnet is arranged in the magnet bin hole, and magnet positioning blocking pieces for preventing the magnet from moving up and down are fixedly arranged on the upper side and the lower side of the magnet bin hole; and reinforcing ribs which are integrated with the torsion shaft are arranged in the side wall of the magnet bin hole.

The reinforcing rib is embedded and fixed in the shaft body, and the reinforcing rib is formed by hooks, wherein the front end of the torsion shaft extends forwards in the side wall of one side of the magnet bin hole and extends backwards and returns back from the side wall of the other side of the magnet bin hole.

The magnet bin holes are two or more and are axially arranged along the shaft body, magnets are arranged in each magnet bin hole, and the same side of each magnet shares one magnet positioning blocking piece; be equipped with the hot melt projection on the upper and lower both sides of the partition wall in adjacent magnet storehouse hole, magnet location separation blade is inserted and is fixed on the hot melt projection hot melt, is equipped with between the both ends of magnet location separation blade and the axis body and prevents the wobbling pendulum stopping structure of separation blade tip.

The swing stopping structure comprises a V-shaped positioning clamping groove formed in the end of the magnet positioning separation blade and a V-shaped positioning clamping block arranged on the shaft body and clamped with the positioning clamping groove to realize positioning.

The utility model discloses electric toothbrush's motor adopts following technical scheme: the motor of the electric toothbrush comprises a shell, wherein an iron core coil and a machine core shaft are arranged in the shell, the middle section of a shaft body of the machine core shaft sinks in a magnetic field groove of the iron core coil, the tail end of the shaft body is connected with a torsion shaft in series, a magnet bin hole which is communicated up and down is formed in the middle section of the shaft body, the magnet bin hole is rectangular and extends along the axial direction of the shaft body, a rectangular magnet is arranged in the magnet bin hole, and magnet positioning blocking pieces for preventing the magnet from moving up and down are fixedly arranged on the upper side and the lower side; and reinforcing ribs which are integrated with the torsion shaft are arranged in the side wall of the magnet bin hole.

The shell comprises a lower support shell and an upper support cover which are oppositely buckled and fixedly connected together, the iron core coil and the core shaft are arranged at the front section of the shell, the rear section of the shell is a battery compartment, and the battery compartment is a closed structure which is jointly formed by the lower support shell and the upper support cover and is used for fixing the battery in the circumferential direction; the magnet positioning baffle is made of iron materials.

The utility model discloses electric toothbrush adopts following technical scheme: the electric toothbrush comprises a brush head and a brush handle, wherein a motor is arranged in a shell of the brush handle, an iron core coil and a core shaft are arranged in a shell of the motor, the middle section of a shaft body of the core shaft sinks in a magnetic field groove of the iron core coil, a torsion shaft is connected in series with the tail end of the shaft body, a magnet bin hole which is communicated up and down is formed in the middle section of the shaft body, the magnet bin hole is rectangular and extends along the axial direction of the shaft body, a rectangular magnet is arranged in the magnet bin hole, and magnet positioning blocking pieces for preventing the magnet from moving up and down are fixedly arranged on the; and reinforcing ribs which are integrated with the torsion shaft are arranged in the side wall of the magnet bin hole.

The shell of the motor comprises a lower support shell and an upper support cover which are oppositely buckled and fixedly connected together, the iron core coil and the core shaft are arranged at the front section of the shell, the rear section of the shell is a battery compartment, and the battery compartment is a closed structure which is jointly formed by the lower support shell and the upper support cover and is used for fixing the battery in the circumferential direction; the magnet positioning baffle is made of iron materials.

Compared with the cylindrical magnet in the prior art, the magnet on the machine core shaft of the utility model adopts a rectangular structure, which not only ensures that the machine core shaft has enough torsion force, but also reduces the width and the height of the magnet, so that the sizes of the whole width direction and the height direction of the machine core shaft are obviously reduced, and further the purpose of thinning and lightening the brush holder of the electric toothbrush is realized, on one hand, the carrying and the use are more portable, and the electric toothbrush which is comfortable to hold is provided for the crowd with small hands; on the other hand, the volume of electric toothbrush diminishes and makes the toothbrush be difficult to empty when charging on the formula charger is inhaled to magnetism, has better safety guarantee. The reinforcing ribs are arranged in the side wall of the magnet bin hole, so that the thickness of the side wall of the magnet bin hole can be reduced as much as possible, the width of the machine core shaft is further reduced, and the strength of the side wall can be ensured and improved; the strengthening rib sets up with torsion shaft is integrative, and structural integrity is better, the production of being convenient for.

Drawings

Fig. 1 is an exploded view of an embodiment of an electric machine according to the present invention;

FIG. 2 is a schematic view of the assembled structure of FIG. 1;

FIG. 3 is an enlarged fragmentary view of the front section of FIG. 2;

FIG. 4 is a perspective view of FIG. 2 with the upper cover of the bracket and the battery removed;

FIG. 5 is a schematic structural view of the spindle of FIG. 1, which is also a schematic structural view of an embodiment of the spindle of the electric toothbrush motor of the present invention;

FIG. 6 is a schematic illustration of the construction of the body of the spindle of FIG. 5;

FIG. 7 is an enlarged fragmentary view taken from the middle of FIG. 6;

FIG. 8 is a partial cross-sectional view of FIG. 6 taken horizontally along the axis of the machine spindle shaft;

FIG. 9 is a schematic structural view of the torsion shaft of FIG. 8;

FIG. 10 is a perspective view of the half section of FIG. 6;

FIG. 11 is a schematic view of the magnet positioning flap of FIG. 1;

fig. 12 is a schematic structural view of an embodiment of the electric toothbrush of the present invention.

Detailed Description

The utility model discloses an embodiment of electric toothbrush's motor is shown in fig. 1-11, and this motor includes casing, core axle 5 and iron core coil 7, and the casing anterior segment is arranged in to iron core coil and core axle, the battery compartment 10 that the casing back end set up as an organic whole. The battery compartment and the core shaft are integrated together to form an independent unit module, so that the modular production is realized, the assembly process of the electric toothbrush is simplified, and the assembly efficiency is improved. Of course, in other embodiments, the battery compartment may not be integrated with the spindle.

In this embodiment, the casing includes support inferior valve 8 and support upper cover 2, and the two finishes at quick-witted dabber 5 and iron core coil 7 installation back, relative lock from top to bottom and pass through screw 1 fixed connection together. In order to carry out firm circumference location to battery 9 in the battery compartment, prevent that electric toothbrush from colliding with or toppling over because of accident and falling and cause the battery not hard up in the use, lead to circular telegram harmful effects electric toothbrush's normal use, establish battery compartment 10 into closed structure, constitute battery compartment 10 by the back end of support inferior valve 8 and the back end of support upper cover 2 jointly promptly, all be equipped with battery location protruding muscle 101 on the support inferior valve inner wall of battery compartment and the support upper cover inner wall, see fig. 4 and show, it is fixed to carry out 360 degrees circumference to adorning battery 9 wherein.

As shown in fig. 1 to 3, the core coil 7 is made of a horseshoe-shaped silicon steel sheet wound with an enamel wire, and is disposed in the front section of the lower case 8 of the bracket.

As shown in fig. 5-10, the core shaft 5 includes a shaft body 50 made of plastic, a magnet 4 and a magnet positioning block 3, a torsion shaft 56 is fixed at the tail end of the shaft body in series, a positioning block 57 is fixed at the tail end of the torsion shaft, and the front end of the shaft body is used for being in transmission connection with the brush head of the electric toothbrush. The middle section of the machine core shaft sinks in a magnetic field groove of the iron core coil 7 and is supported on the lower bracket shell 8 through a bearing 6.

Two magnet storehouse holes 51 have been seted up along axial direction in the middle section of dabber axis body 50, magnet storehouse hole link up from top to bottom and is the rectangle along dabber axial extension, be equipped with hot melt projection 53 on the upper and lower both sides of the partition wall 52 in magnet storehouse hole, every magnet storehouse is downthehole all coincide to inlay rectangular magnet 4, the magnet location separation blade 3 that all is fixed with iron on the upper and lower both sides in magnet storehouse hole, in order to prevent play about magnet 4, magnet location separation blade of homonymy sharing of two magnets, magnet location separation blade 3 is inserted on the hot melt projection through its central jack 31, be in the same place through hot melt and 50 fixed connection of dabber axis body, this kind of hot melt fixed mode is not only convenient simple, and can not additionally increase width size and the height dimension of dabber, for the motor lightweight miniaturization provides the guarantee.

Still be equipped with between the both ends of magnet location separation blade 3 and the core axle body 50 and prevent the wobbling pendulum structure that ends of separation blade, in order to further reduce the size of core axle width direction, improve the general match nature in the assembling process and guarantee the positioning accuracy simultaneously, should end the pendulum structure and adopt the mode of seting up at the V-arrangement positioning groove 32 of magnet location separation blade end and setting up the V-arrangement positioning fixture block 54 that realizes the location with the positioning groove block on the core axle body.

As shown in fig. 8-10, in order to further reduce the width of the core shaft and better achieve the purpose of thinning the brush holder of the electric toothbrush, a reinforcing rib 561 is pre-embedded in the sidewall of the magnet bin hole to ensure and improve the strength of the sidewall, so that the width of the core shaft body can be further reduced by reducing the thickness of the sidewall of the magnet bin hole. In order to facilitate production and positioning of the reinforcing ribs during embedding, the reinforcing ribs 561 and the torsion shaft 56 are integrated, and in the embodiment, the reinforcing ribs 561 are formed by hooks formed by extending the front end of the torsion shaft 56 forwards in the side wall on one side of the magnet bin hole and extending back backwards from the side wall on the other side. In other embodiments, the stiffener and the torsion shaft may be integrally formed in a Y-shaped configuration. The torsion shaft is made of steel wires or elastic steel sheets, and the tail end of the torsion shaft 56 is fixedly connected with the positioning block 57 in a hook shape.

In specific implementation, the number of the magnet bin holes can be set according to needs, for example, one or three or other numbers can be set, but the number of the magnets needs to be the same as that of the magnet bin holes; the magnet positioning blocking piece can be fixed by screws, the swing stopping structure can also be a concave-convex structure opposite to the embodiment, and the concave-convex shape can also be a rectangle.

Fig. 1-11 show an embodiment of a core shaft of an electric toothbrush motor of the present invention, the core shaft has the same structure as the core shaft of the above-mentioned electric toothbrush motor embodiment, and details thereof are omitted here.

An embodiment of the electric toothbrush of the present invention is shown in fig. 1-12, which comprises a brush head 12 and a brush handle, wherein the brush head and the brush handle are detachably and fixedly connected, and the connection structure is prior art, so the description is omitted. The handle comprises a handle housing 11 and a motor mounted in the handle housing, a front end 55 of a motor shaft of the motor is inserted into the head 12 for driving connection, the motor is the same as the motor of the above-mentioned electric toothbrush and will not be described in detail. In fig. 12, 9 is a battery, and in other embodiments, the battery 9 is mounted in a battery compartment of the handle housing when the battery compartment is not integrated with the spindle.

Claims

1. The core axle of electric toothbrush motor, including the axis body, the tail end of axis body has concatenated torsion shaft, its characterized in that: a magnet bin hole which is communicated up and down is formed in the middle section of the shaft body, the magnet bin hole is rectangular and extends along the axial direction of the shaft body, a rectangular magnet is arranged in the magnet bin hole, and magnet positioning blocking pieces for preventing the magnet from moving up and down are fixedly arranged on the upper side and the lower side of the magnet bin hole; and reinforcing ribs which are integrated with the torsion shaft are arranged in the side wall of the magnet bin hole.

2. The stem of an electric toothbrush motor as defined in claim 1, wherein: the reinforcing rib is embedded and fixed in the shaft body, and the reinforcing rib is formed by hooks, wherein the front end of the torsion shaft extends forwards in the side wall of one side of the magnet bin hole and extends backwards and returns back from the side wall of the other side of the magnet bin hole.

3. The stem of an electric toothbrush motor according to claim 1 or 2, characterized in that: the magnet bin holes are two or more and are axially arranged along the shaft body, magnets are arranged in each magnet bin hole, and the same side of each magnet shares one magnet positioning blocking piece; be equipped with the hot melt projection on the upper and lower both sides of the partition wall in adjacent magnet storehouse hole, magnet location separation blade is inserted and is fixed on the hot melt projection hot melt, is equipped with between the both ends of magnet location separation blade and the axis body and prevents the wobbling pendulum stopping structure of separation blade tip.

4. The arbor of an electric toothbrush motor according to claim 3, characterized in that: the swing stopping structure comprises a V-shaped positioning clamping groove formed in the end of the magnet positioning separation blade and a V-shaped positioning clamping block arranged on the shaft body and clamped with the positioning clamping groove to realize positioning.

5. Electric toothbrush's motor, including the casing, install iron core coil and quick-witted dabber in the casing, the middle section of quick-witted dabber axis body sinks in iron core coil's magnetic field recess, and the tail end of axis body has concatenated torsion shaft, its characterized in that: a magnet bin hole which is communicated up and down is formed in the middle section of the shaft body, the magnet bin hole is rectangular and extends along the axial direction of the shaft body, a rectangular magnet is arranged in the magnet bin hole, and magnet positioning blocking pieces for preventing the magnet from moving up and down are fixedly arranged on the upper side and the lower side of the magnet bin hole; and reinforcing ribs which are integrated with the torsion shaft are arranged in the side wall of the magnet bin hole.

6. The motor of the electric toothbrush according to claim 5, wherein: the reinforcing rib is embedded and fixed in the shaft body, and the reinforcing rib is formed by hooks, wherein the front end of the torsion shaft extends forwards in the side wall of one side of the magnet bin hole and extends backwards and returns back from the side wall of the other side of the magnet bin hole.

7. The motor of the electric toothbrush according to claim 5, wherein: the magnet bin holes are two or more and are axially arranged along the shaft body, magnets are arranged in each magnet bin hole, and the same side of each magnet shares one magnet positioning blocking piece; be equipped with the hot melt projection on the upper and lower both sides of the partition wall in adjacent magnet storehouse hole, magnet location separation blade is inserted and is fixed on the hot melt projection hot melt, is equipped with between the both ends of magnet location separation blade and the axis body and prevents the wobbling pendulum stopping structure of separation blade tip.

8. The motor of the electric toothbrush according to claim 7, wherein: the swing stopping structure comprises a V-shaped positioning clamping groove formed in the end of the magnet positioning separation blade and a V-shaped positioning clamping block arranged on the shaft body and clamped with the positioning clamping groove to realize positioning.

9. The motor of the electric toothbrush according to any one of claims 5 to 8, wherein: the shell comprises a lower support shell and an upper support cover which are oppositely buckled and fixedly connected together, the iron core coil and the core shaft are arranged at the front section of the shell, the rear section of the shell is a battery compartment, and the battery compartment is a closed structure which is jointly formed by the lower support shell and the upper support cover and is used for fixing the battery in the circumferential direction; the magnet positioning baffle is made of iron materials.

10. Electric toothbrush, including brush head and brush holder, be equipped with the motor in the shell of brush holder, install iron core coil and core axle in the casing of motor, the middle section of core axle body sinks in iron core coil's magnetic field recess, and the tail end of axis body has concatenated torsion shaft, its characterized in that: a magnet bin hole which is communicated up and down is formed in the middle section of the shaft body, the magnet bin hole is rectangular and extends along the axial direction of the shaft body, a rectangular magnet is arranged in the magnet bin hole, and magnet positioning blocking pieces for preventing the magnet from moving up and down are fixedly arranged on the upper side and the lower side of the magnet bin hole; and reinforcing ribs which are integrated with the torsion shaft are arranged in the side wall of the magnet bin hole.

11. The powered toothbrush as defined in claim 10, wherein: the reinforcing rib is embedded and fixed in the shaft body, and the reinforcing rib is formed by hooks, wherein the front end of the torsion shaft extends forwards in the side wall of one side of the magnet bin hole and extends backwards and returns back from the side wall of the other side of the magnet bin hole.

12. The powered toothbrush as defined in claim 10, wherein: the magnet bin holes are two or more and are axially arranged along the shaft body, magnets are arranged in each magnet bin hole, and the same side of each magnet shares one magnet positioning blocking piece; be equipped with the hot melt projection on the upper and lower both sides of the partition wall in adjacent magnet storehouse hole, magnet location separation blade is inserted and is fixed on the hot melt projection hot melt, is equipped with between the both ends of magnet location separation blade and the axis body and prevents the wobbling pendulum stopping structure of separation blade tip.

13. The powered toothbrush as defined in claim 12, wherein: the swing stopping structure comprises a V-shaped positioning clamping groove formed in the end of the magnet positioning separation blade and a V-shaped positioning clamping block arranged on the shaft body and clamped with the positioning clamping groove to realize positioning.

14. The electric toothbrush according to any one of claims 10 to 13, wherein: the shell of the motor comprises a lower support shell and an upper support cover which are oppositely buckled and fixedly connected together, the iron core coil and the core shaft are arranged at the front section of the shell, the rear section of the shell is a battery compartment, and the battery compartment is a closed structure which is jointly formed by the lower support shell and the upper support cover and is used for fixing the battery in the circumferential direction; the magnet positioning baffle is made of iron materials.