CN216495782U

CN216495782U - Toothbrush head and electric toothbrush

Info

Publication number: CN216495782U
Application number: CN202122211212.2U
Authority: CN
Inventors: 刘洋; 黄道臣; 黄拔梓
Original assignee: Shenzhen Lebond Technology Co ltd
Current assignee: Shenzhen Lebond Technology Co ltd
Priority date: 2021-09-13
Filing date: 2021-09-13
Publication date: 2022-05-13
Anticipated expiration: 2031-09-13

Abstract

The utility model provides a toothbrush head and an electric toothbrush, wherein the toothbrush head comprises a toothbrush head shell, a motor rotor, a motor coil and a return structure, wherein the toothbrush head shell is provided with an accommodating cavity; the motor rotor comprises a rotor body and a magnetic part which are both positioned in the accommodating cavity, the magnetic part is connected with the rotor body, the return structure is connected with the motor rotor and the cavity wall of the accommodating cavity, and the return structure is used for returning the motor rotor; the motor coil is positioned in the accommodating cavity and can drive the motor rotor to vibrate through electromagnetic induction after being electrified. The vibration of the motor rotor can drive the brush head shell to vibrate, so that the vibration of the handle is reduced, the user experience is improved, and the user can use the brush head shell more comfortably.

Description

Toothbrush head and electric toothbrush

Technical Field

The utility model belongs to the technical field of electric toothbrushes, and particularly relates to a toothbrush head and an electric toothbrush.

Background

Along with the continuous improvement of living standard of people, people are more and more popular to the use of electric toothbrush, have proposed higher and higher requirement to the travelling comfort that electric toothbrush used. At present, a miniature vibration motor assembled in an electric toothbrush is generally arranged at a handle part, an output shaft of the motor drives a brush head to vibrate integrally during working, however, the motor can also drive the handle part to vibrate, the handheld feeling of a user is influenced, and the user hardly generates a pleasant mood during tooth brushing.

Disclosure of Invention

The utility model aims to provide a toothbrush head and an electric toothbrush, and aims to solve the technical problem that in the prior art, a motor can drive a handle part to generate strong vibration when vibrating, so that the handheld feeling of a user is influenced.

The utility model is thus embodied in a toothbrush head comprising:

a brush head housing having an accommodating chamber;

the motor rotor comprises a rotor body and a magnetic part which are both positioned in the accommodating cavity, and the magnetic part is connected with the rotor body;

the return structure is connected with the motor rotor and the cavity wall of the accommodating cavity and used for returning the motor rotor;

and the motor coil is positioned in the accommodating cavity and can drive the motor rotor to vibrate through electromagnetic induction after being electrified.

In one embodiment, the return structure includes an installation block connected to a cavity wall of the accommodating cavity, an installation groove formed in the installation block, and a connection sheet inserted into the installation groove, and the connection sheet is fixedly connected to the rotor body.

In one embodiment, the connection piece has elasticity to provide elastic restoring force to the motor rotor in vibration.

In one embodiment, a yielding structure is arranged between the motor rotor and the cavity wall of the accommodating cavity, and the yielding structure can prevent the motor rotor from touching the brush head shell when vibrating.

In one embodiment, the brush head shell comprises a brush sheet provided with bristles and a brush head body connected to the brush sheet, and the brush sheet is hermetically connected with the brush head body and jointly forms the accommodating cavity.

In one embodiment, the brush head body comprises a brush head lower shell and a brush head upper shell connected with the brush head lower shell in a sealing mode, the brush head lower shell is provided with a containing groove, the brush head upper shell is connected with a notch of the containing groove of the brush head lower shell in a sealing mode and is provided with a communication hole communicated to the containing groove, and the brush piece is inserted into the communication hole.

In one embodiment, the brush sheet is hermetically connected with the brush head upper shell.

In one embodiment, the brush piece is connected with the brush head upper shell, and the brush head upper shell is connected with the motor rotor in a sealing mode.

In one embodiment, the brush head shell is provided with an avoiding hole communicating the accommodating cavity with the outside, and the extending end of the motor coil penetrates through the avoiding hole.

The embodiment of the utility model also provides an electric toothbrush, which comprises a handle and the toothbrush head, wherein the toothbrush head is connected to the handle.

Compared with the prior art, the utility model has the technical effects that: during the use, link to each other toothbrush head and handle to contact electric machine coil and the power contact of handle, for electric machine coil circular telegram, accessible electromagnetic induction produces magnetic field after electric machine coil circular telegram, and magnetic field makes electric machine rotor vibrate through drive magnetic part reciprocating motion, and electric machine rotor passes through return structure and is connected with the first shell of brush, and electric machine rotor's vibration can drive the vibration of the first shell of brush, has alleviateed the vibration of handle, has promoted user experience, makes the user use more comfortable.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments of the present invention or in the description of the prior art will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

Figure 1 is a perspective view of a toothbrush head provided in accordance with an embodiment of the present invention;

figure 2 is an exploded view of the toothbrush head of figure 1;

figure 3 is a cross-sectional view of a section of the toothbrush head of figure 1;

figure 4 is a cross-sectional view of another section of the toothbrush head of figure 1.

Description of reference numerals:

100. a toothbrush head; 10. a brush head housing; 101. an accommodating cavity; 11. a brush head body; 111. a brush head lower shell; 112. the brush head is arranged on the shell; 1101. a containing groove; 1102. a communicating hole; 1103. avoiding holes; 12. brushing sheets; 121. a connecting plate; 122. brushing; 13. a return structure; 131. mounting blocks; 132. mounting grooves; 133. connecting sheets; 14. a bump; 20. a motor rotor; 21. a rotor body; 22. a magnetic member; 30. a motor coil; 40. and (5) a yielding structure.

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 illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.

In the description of the present invention, it is to be understood that the terms "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and simplicity in description, but do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments.

Referring to fig. 1, the present invention provides a toothbrush head 100 and an electric toothbrush, the electric toothbrush includes a toothbrush head 100 and a handle, and the toothbrush head 100 is mounted on the handle. Toothbrush head 100 is used to clean teeth and the handle is used for the user to hold.

Referring to fig. 2 and 3, the toothbrush head 100 includes a brush head housing 10, a motor rotor 20, and a motor coil 30.

The brush head shell 10 is provided with a containing cavity 101, and bristles 122 are arranged outside the brush head shell 10. The motor rotor 20, the motor coil 30 and the return structure 13 are all located in the accommodating cavity 101, and therefore, the accommodating cavity 101 is preferably hermetically disposed.

The motor rotor 20 includes a rotor body 21 and a magnetic part 22 both located in the accommodating cavity 101, the magnetic part 22 is connected to the rotor body 21, the magnetic part 22 is a magnet, the magnetic part 22 can be embedded in the rotor body 21, and the rotor body 21 can be an injection molding part and is integrated with the magnetic part 22 by injection molding.

In the present embodiment, two magnetic members 22 are provided and spaced apart from each other.

The return structure 13 connects the motor rotor 20 and the cavity wall of the accommodating cavity 101, that is to say. The rotor body 21 is connected with the cavity wall of the accommodating cavity 101 through the return structure 13.

Wherein, electric motor rotor 20 accessible return structure 13 can dismantle with the chamber wall of holding chamber 101 and be connected to electric motor rotor 20's quick replacement.

Optionally, the return structure 13 is connected to the rotor body 21. In other embodiments, the returning structure 13 may also be connected to the magnetic member 22, or to the rotor body 21 or the magnetic member 22, respectively.

The motor coil 30 is located in the accommodating cavity 101 and can drive the motor rotor 20 to vibrate through electromagnetic induction after being electrified. Wherein the motor coil 30 is connected to the brush head housing 10 and spaced from the magnetic element 22. The extended end of the motor coil 30 can pass out of the brushhead housing 10 to enable docking with a power contact in the handle.

Specifically, a protruding block 14 is convexly arranged on the cavity wall of the accommodating cavity 101, the protruding block 14 is arranged opposite to the motor rotor 20, and the motor coil 30 can be wound on the protruding block 14 to realize connection with the brush head housing 10.

Optionally, the brush head housing 10 is provided with a hole 1103 communicating the accommodating chamber 101 with the outside, and the handle covers the opening of the hole 1103 to prevent external liquid from permeating into the accommodating chamber 101 through the hole 1103. The extended end of the motor coil 30 is inserted into the avoiding hole 1103 and extends to be connected with the power contact of the handle through the avoiding hole 1103.

The aperture of the avoiding hole 1103 can be adapted to the diameter of the motor coil 30, so as to seal the avoiding hole 1103.

During the use, link to each other toothbrush head 100 and handle, and contact motor coil 30 with the power contact of handle, for motor coil 30 circular telegram, accessible electromagnetic induction produces magnetic field after motor coil 30 circular telegram, magnetic field makes motor rotor 20 vibrate through driving magnetic part 22 reciprocating motion, motor rotor 20 passes through return structure 13 and is connected with brush head shell 10, motor rotor 20's vibration can drive brush head shell 10 vibration, the vibration of handle has been alleviateed, user experience has been promoted, make the user use more comfortable.

Specifically, referring to fig. 2 and fig. 3, the returning structure 13 includes an installation block 131 connected to the cavity wall of the accommodating cavity 101, an installation groove 132 formed on the installation block 131, and a connection sheet 133 inserted into the installation groove 132, and the insertion of the connection sheet 133 and the installation groove 132 can realize the quick butt joint of the motor rotor 20 and the brush head housing 10. The mounting block 131 serves to improve structural rigidity of the brush head housing 10 and connection stability of the connecting sheet 133 to the brush head housing 10.

In the present embodiment, referring to fig. 2 and 3, the connecting piece 133 has elasticity to provide elastic restoring force to the vibrating motor rotor 20.

When the motor coil 30 drives the magnetic member 22 to move, the connection piece 133 is elastically deformed and generates an elastic restoring force that can enhance the vibration amplitude of the motor rotor 20 when the motor coil 30 drives the magnetic member 22 to move reversely.

Optionally, the connecting pieces 133 may be two spring pieces, and the two spring pieces are respectively connected to two opposite sides of the rotor body 21, so as to stably fix the rotor body 21 and make the rotor body 21 uniformly stressed. At the moment, the rotating vibration direction of the motor is perpendicular to the connecting line of the two elastic sheets.

Since the brush head housing 10 is made of hard material, in order to prevent the motor rotor 20 from hitting the cavity wall of the accommodating cavity 101 during vibration and generating noise, referring to fig. 4, a yielding structure 40 is provided between the motor rotor 20 and the cavity wall of the accommodating cavity 101, and the yielding structure 40 can prevent the motor rotor 20 from touching the brush head housing 10 during vibration. Like this, electric motor rotor 20 can drive brush head shell 10 vibration through the power transmission of return structure 13 when the vibration, and the vibration of rotor body 21 can not contact brush head shell 10, prevents that electric motor rotor 20 from colliding brush head body 11 and producing the interference, has promoted user experience.

In this embodiment, the avoiding structure 40 may be a gap between the motor rotor 20 and the cavity wall of the accommodating cavity 101, so that the returning structure 13 can avoid the vibrating rotor body 21.

In other embodiments, the avoiding structure 40 may also be a structural member made of a flexible material or an elastic material and filled in a gap between the motor rotor 20 and the cavity wall of the accommodating cavity 101, so that the avoiding structure 40 can provide damping force and buffer when the motor rotor 20 vibrates, and prevent the motor rotor 20 from directly hitting the brush head housing 10.

Specifically, referring to fig. 4, the brush head housing 10 includes a brush piece 12 having bristles 122 and a brush head body 11 connected to the brush piece 12, the brush piece 12 and the brush head body 11 are hermetically connected to form an accommodating cavity 101, where the hermetic connection may be performed by disposing a soft glue between the brush piece 12 and the brush head body 11 for sealing, or the brush piece 12 may be a soft glue, and the brush piece 12 and the brush head body 11 are tightly fitted for sealing.

During installation, the accommodating cavity 101 can be formed by butting the brush piece 12 and the brush head body 11, so that the motor rotor 20 and the motor coil 30 can be conveniently installed and disassembled.

Meanwhile, when the bristles 122 are deformed and need to be replaced, the brush piece 12 can be directly detached and replaced with a new brush piece 12, so that the motor rotor 20 and the motor coil 30 can be reused, and the service life of the electric toothbrush is prolonged.

Specifically, the brush piece 12 includes a connection plate 121 and bristles 122 connected to one side of the connection plate 121, and the bristles 122 are used for cleaning teeth.

Referring to fig. 2 and 4, the brush head body 11 includes a lower brush head shell 111 and an upper brush head shell 112 hermetically connected to the lower brush head shell 111, the lower brush head shell 111 has a receiving groove 1101, the upper brush head shell 112 is hermetically connected to a notch of the receiving groove 1101 of the lower brush head shell 111 and has a communication hole 1102 communicated to the receiving cavity 101, and the brush piece 12 is inserted into the communication hole 1102 to realize the quick connection between the brush piece 12 and the brush head body 11. Thus, the brush piece 12 is connected with the brush head lower shell 111 through the brush head upper shell 112.

In one embodiment, the brush sheet 12 is hermetically connected to the brush head upper shell 112, so that the brush sheet 12 and the brush head body 11 together form a sealed accommodating cavity 101.

In another embodiment, the brush sheet 12 is connected with the brush head upper shell 112, and the brush head upper shell 112 is hermetically connected with the motor rotor 20. Thus, the brush head upper shell 112, the brush head lower shell 111 and the motor rotor 20 are enclosed together to form a sealed space, and the motor coil 30 is accommodated in the sealed space to prevent external liquid from permeating to cause short circuit of the motor coil 30.

Specifically, the brush piece 12 is fitted in the communication hole 1102 of the brush head upper case 112.

The embodiment of the present invention further provides an electric toothbrush, which comprises a handle and the toothbrush head 100 provided in the above embodiments, wherein the toothbrush head 100 has the same structural features as the toothbrush head 100 in the above embodiments, and the functions are the same, which are not described herein again.

Toothbrush head 100 is connected to the handle, and wherein, be used for on the toothbrush head 100 to supply the hole 1103 of dodging that motor coil 30 passed to extend towards the handle, the handle shields this hole 1103 of dodging, is equipped with the power in the handle, and the power has power contact, and the extension end of motor coil 30 is worn out and is dodged and contact with power contact behind the hole 1103 to communicate with the power electricity.

This electric toothbrush's toothbrush head 100 is the initiative vibration source, and when the user stretched into toothbrush head 100 the oral cavity, toothbrush head 100's vibration made brush hair 122 clean the tooth, and the handheld part of handle is because apart from toothbrush head 100 distance far away, and it shakes to feel and sets up the vibration sense of motor vibration in the handle more, avoids appearing the condition such as hand anesthesia, and user's use can be more comfortable.

The foregoing is considered as illustrative only of the preferred embodiments of the utility model, and is presented merely for purposes of illustration and description of the principles of the utility model and is not intended to limit the scope of the utility model in any way. Any modifications, equivalents and improvements made within the spirit and principles of the utility model and other embodiments of the utility model without the creative effort of those skilled in the art are included in the protection scope of the utility model based on the explanation here.

Claims

1. A toothbrush head, comprising:

a brush head housing having an accommodating chamber;

2. The toothbrush head of claim 1, wherein the return structure comprises an installation block connected to the wall of the accommodating cavity, an installation groove formed in the installation block, and a connecting piece inserted in the installation groove, and the connecting piece is fixedly connected to the rotor body.

3. The brush head of claim 2, wherein the coupling piece has elasticity to provide elastic restoring force to the motor rotor in vibration.

4. The toothbrush head of claim 1, wherein a relief structure is provided between the motor rotor and the wall of the receiving cavity, the relief structure being capable of preventing the motor rotor from touching the brush head housing when vibrating.

5. The toothbrush head of claim 1, wherein the head housing includes a brush plate having bristles and a head body connected to the brush plate, the brush plate being sealingly connected to the head body and together forming the receiving chamber.

6. The toothbrush head according to claim 5, wherein the toothbrush head body comprises a toothbrush head lower shell and a toothbrush head upper shell hermetically connected with the toothbrush head lower shell, the toothbrush head lower shell is provided with a containing groove, the toothbrush head upper shell is hermetically connected with a notch of the containing groove of the toothbrush head lower shell and is provided with a communication hole communicated to the containing groove, and the toothbrush piece is inserted in the communication hole.

7. A toothbrush head according to claim 6 wherein the brush blade is sealingly connected to the head upper shell.

8. A toothbrush head according to claim 6 wherein the brush blade is connected to the head housing and the head housing is sealingly connected to the motor rotor.

9. The toothbrush head according to any one of claims 1 to 8 wherein the brush head housing is provided with an avoiding hole communicating the accommodating chamber with the outside, and the extending end of the motor coil is inserted into the avoiding hole.

10. A powered toothbrush comprising a handle and a toothbrush head according to any one of claims 1 to 9, the toothbrush head being connected to the handle.