CN219184247U

CN219184247U - Electric toothbrush

Info

Publication number: CN219184247U
Application number: CN202320235930.XU
Authority: CN
Inventors: 黄少东
Original assignee: Guangdong Alpha Health Technology Co ltd
Current assignee: Guangdong Alpha Health Technology Co ltd
Priority date: 2023-02-15
Filing date: 2023-02-15
Publication date: 2023-06-16
Anticipated expiration: 2033-02-15

Abstract

The utility model provides an electric toothbrush, which comprises a brush handle and a brush head which are mutually combined, wherein the interior of the brush handle is of a cavity structure, the brush handle is provided with two opposite ends in the up-down direction, the brush head is detachably arranged at a first end of the brush handle, the brush handle comprises a bracket positioned in the brush handle, a middle piece and an output shaft which is combined with the bracket, and the bracket, the middle piece and the output shaft are integrally formed; the utility model simplifies the manufacturing process of the electric toothbrush by integrating the output shaft, the middle piece and the bracket, improves the matching degree between the output shaft and the bracket as well as between the output shaft and the middle piece, and uses the common motor to drive, thereby avoiding abnormal operation of the electric toothbrush, achieving good oral cavity cleaning effect and playing a role in protecting the oral cavity.

Description

Electric toothbrush

Technical Field

The utility model relates to the field of nursing tools, in particular to an electric toothbrush.

Background

The electric toothbrush utilizes the motor to drive the brush head to rotate or swing so as to achieve the purpose of cleaning teeth, and can help people to clean teeth better when people clean the oral cavity.

The existing electric toothbrush utilizing the magnetic suspension motor to work is characterized in that a bracket for supporting the motor and an output shaft are formed in a split mode, and due to the problem of manufacturing technology of the bracket and the output shaft, the output shaft and the bracket cannot be matched, when the magnetic suspension motor works, the bracket can prevent the output shaft from outputting vibration, so that the magnetic suspension motor works abnormally, the electric toothbrush cannot work normally, and even the oral cavity is injured.

Disclosure of Invention

The utility model provides an electric toothbrush, which aims to solve the technical problem of abnormal operation of the electric toothbrush, and the specific scheme is as follows:

the utility model provides an electric toothbrush, includes brush holder and the brush head that combines each other, the inside of brush holder is cavity structure, the brush holder has the opposite both ends in upper and lower direction, wherein, brush head detachably installs the first end at the brush holder, the brush holder includes support, middleware and the output shaft that combines with the support that is located the brush holder inside, support, middleware and output shaft are integrated into one piece.

The electric toothbrush further comprises a motor and an eccentric wheel which are arranged on the bracket, and the groove is used for accommodating at least one part of the output shaft, the motor, the eccentric wheel and the middle piece.

The electric toothbrush comprises an electric toothbrush body and is characterized in that the groove part comprises a first groove, a second groove and a third groove which are communicated with each other from top to bottom in sequence, the first groove is used for accommodating at least one part of an output shaft, an eccentric wheel and a middle piece, the second groove is used for accommodating a motor, the electric toothbrush body further comprises a battery electrically connected with the motor, and the third groove is used for accommodating the battery.

The motor comprises a connecting shaft positioned at the upper end, and the connecting shaft is connected with the eccentric wheel.

The eccentric wheel is provided with an input end, an output end and an eccentric block, wherein the input end is combined with the connecting shaft, and the output end is combined with the middle piece.

The eccentric wheel is also provided with a containing part positioned on the eccentric block and a weight increasing part contained by the containing part.

The middle piece is provided with a combining hole at the upper end and a combining part at the lower end, wherein the combining hole is used for combining with the output shaft, and the middle piece also comprises a bearing combined with the combining part, and the bearing is used for combining with the output end of the eccentric wheel.

The output shaft has a first shaft portion at a lower end for cooperation with the coupling hole of the intermediate member, and a second shaft portion at an upper end for coupling with the brush head.

The motor is a common motor.

The bracket further comprises a step and a through hole communicated with the upper end and the lower end of the upper end, the step extends upwards from the upper end, and the through hole is combined with the output shaft and used for supporting the output shaft.

In summary, the output shaft, the middle piece and the bracket are integrally formed, so that the manufacturing process of the electric toothbrush is simplified, the matching degree between the output shaft and the bracket as well as between the output shaft and the middle piece is improved, the electric toothbrush is driven by a common motor, abnormal operation of the electric toothbrush is avoided, and therefore, a good oral cavity cleaning effect is achieved, and an effect of protecting an oral cavity is achieved.

Drawings

Fig. 1 is a perspective view of an electric toothbrush according to the present utility model.

Fig. 2 is an exploded view of a portion of an electric toothbrush according to the present utility model.

Fig. 3 is a perspective view of an electric toothbrush holder according to the present utility model.

Fig. 4 and 5 are exploded views of the drive assembly of the electric toothbrush according to the present utility model.

Fig. 6 is a cross-sectional view of the hidden part of the electric toothbrush according to the present utility model, taken along the A-A plane, and viewed from the front to the rear.

Detailed Description

FIG. 1 is a perspective view of an electric toothbrush in accordance with the present utility model; FIG. 2 is an exploded schematic view of a portion of an electric toothbrush in accordance with the present utility model; FIG. 3 is a perspective view of an electric toothbrush holder according to the present utility model; figures 4 and 5 are exploded views of the drive assembly of the electric toothbrush according to the present utility model; fig. 6 is a cross-sectional view of the hidden part of the electric toothbrush according to the present utility model, taken along the A-A plane, and viewed from the front to the rear.

For convenience of description and understanding, the present embodiment is based on the state shown in fig. 1, in which the direction in which the electric toothbrush is placed is defined as the up-down direction, the brush head faces upward, or vice versa, while the direction in which the bristles of the brush head point is defined as the front, or vice versa.

As shown in fig. 1 and 2, the electric toothbrush 100 includes a handle 1, a head 2 and a bottom cover 3 coupled to each other, the handle 1 having a first end 11 and a second end 12 opposite to each other in an up-down direction, the head 2 being detachably mounted to the first end 11 of the handle 1, the bottom cover 3 being detachably mounted to the second end 12 of the handle 1, the handle 1 further having a control button 15 on an outer surface, the control button 15 for controlling the operation of the electric toothbrush 100, the head 2 further including a coupling member 21 therein, the coupling member 21 for allowing the head 2 to be mounted. Further, the inside of the brush holder 1 is of a cavity structure, the electric toothbrush 100 further comprises a bracket 4, a motor 5, an eccentric wheel 6, a middle piece 7 and an output shaft 8 combined with the bracket 4, wherein the bracket 4 is positioned in the cavity of the brush holder 1, the motor 5, the eccentric wheel 6 and the middle piece 7 are arranged on the bracket 4, the electric toothbrush 100 further comprises a battery 9 arranged on the bracket 4, the battery 9, the motor 5, the eccentric wheel 6, the middle piece 7 and the output shaft 8 are sequentially connected with each other, the motor 5 is particularly electrically connected with the battery 9, the battery 9 is used for providing a working power supply for the motor 5, when the electric toothbrush 100 works, the motor 5 drives the eccentric wheel 6 to rotate, so that the eccentric wheel 6 generates centrifugal force, the middle piece 7 vibrates, and the brush head 2 vibrates through the output shaft 8, so that the function of cleaning an oral cavity is realized; furthermore, the bracket 4, the intermediate piece 7 and the output shaft 8 are integrally formed, so that the manufacturing process of the bracket 4, the intermediate piece 7 and the output shaft 8 can be simplified, and the degree of matching between the output shaft 8 and the bracket 4 and the intermediate piece 7 can be improved, thereby improving the working stability of the motor 5, ensuring the normal working of the electric toothbrush 100 and better protecting the oral cavity. The bottom cover 3 is arranged at the second end 12 of the brush holder 1 and is used for sealing the brush holder 1, isolating the components in the cavity of the brush holder 1 from the external environment, and avoiding the damage of the components in the cavity of the brush holder 1 caused by the influence of the external environment, so that the electric toothbrush 100 cannot be used.

As shown in fig. 3, the stand 4 includes a housing 40, upper and

lower end portions

41 and 42 opposite to each other in the up-down direction, and a groove portion 45 between the upper and

lower end portions

41 and 42, the groove portion 45 for accommodating at least a portion of the output shaft 8, the battery 9, the motor 5, the eccentric 6, and the intermediate member 7, specifically, the groove portion 45 includes a first groove 451, a second groove 452, and a third groove 453 communicating with each other in the up-down direction, further, a baffle 46 is provided between the first groove 451 and the second groove 452, the baffle 46 is provided between the second groove 452 and the third groove 453, the baffle 46 is provided for partitioning the first groove 451, the second groove 452, and the third groove 453, further, the first groove 451 is provided for accommodating at least a portion of the output shaft 8, the eccentric 6, and the intermediate member 7, the third groove 453 is provided for accommodating the battery 9, and the baffle 46 may also be provided for supporting the motor 5 in the up-down direction, and preventing the battery 9, the motor 5, the eccentric 6, the intermediate member 7, and the output shaft 8 from moving in the up-down direction, and the bad cleaning effect of the electric toothbrush 100 is avoided. The bracket 4 further comprises a step 43 extending upward from the upper end 41 and a through hole 411 penetrating the upper end 41, the through hole 411 being used for being combined with the output shaft 8 and supporting the output shaft 8, the output shaft 8 connecting the intermediate member 7 with the combining member 21, the step 43 being used for enhancing the strength of the upper end 41 and the stability of the output shaft 8, so as to prevent the bracket 4 from being broken or injured in the oral cavity due to the excessive vibration amplitude of the output shaft 8, the brush holder 1 further comprises a fitting member 14 (shown in fig. 2) which is matched with the step 43, the fitting member 14 being used for further enhancing the strength of the upper end 41 and the stability of the output shaft 8; the bracket 4 further includes a mounting portion 44 below the lower end portion 42, the mounting portion 44 being for coupling with the bottom cover 3 to allow the bottom cover 3 to be mounted.

As shown in fig. 4, 5 and 6, the motor 5 includes a connection shaft 51 at an upper end, the connection shaft 51 being for coupling with the eccentric 6 to rotate the eccentric 6 about an axis parallel to an up-down direction; the eccentric wheel 6 has an input end 61, an output end 62 and an eccentric block 63, the input end 61 and the output end 62 are coaxially arranged, the eccentric block 63 is farther away from the rotation axis than the input end 61/output end 62 along the radial direction, further, the eccentric block 63 can be coaxially arranged with the input end 61/output end 62, the eccentric block 63 can also be different from the input end 61/output end 62, so that the eccentric wheel 6 generates centrifugal force in the rotation process, the middle piece 7 and the output shaft 8 generate vibration, the input end 61 is used for being combined with the motor 5, the output end 62 is used for being combined with the middle piece 7, the eccentric wheel 6 also has a containing part 64 arranged on the eccentric block 63 and a weight increasing part 65 contained by the containing part 64, and the weight increasing part 65 can be an iron block for increasing the centrifugal force of the eccentric wheel 6, so that the vibration of the middle piece 7 and the output shaft 8 is enhanced, and the vibration of the brush head 2 is enhanced, and a good cleaning effect is achieved; further, the input end 61 has a connection hole 611, and the connection hole 611 is used to cooperate with the connection shaft 51 to enable the motor 5 to drive the eccentric 6 to rotate.

The intermediate member 7 has a coupling hole 71 at an upper end and a coupling portion 72 at a lower end, the coupling hole 71 is adapted to be coupled with the output shaft 8, and the coupling hole 71 is configured as a shaped blind hole to prevent the output shaft 8 from generating a relative movement with the coupling hole 71, thereby ensuring that the output shaft 8 can vibrate along with the vibration of the intermediate member 7, and the intermediate member 7 further includes a bearing 75 coupled with the coupling portion 72, the bearing 75 being adapted to be coupled with the eccentric 6, and further, the bearing 75 being coupled with the output end 62 of the eccentric 6 to prevent the output end 62 and the coupling portion 72 from being directly coupled to be severely worn, thereby protecting the eccentric 6 and the intermediate member 7 and extending the life of the eccentric 6 and the intermediate member 7.

The output shaft 8 has a first shaft portion 81 at a lower end and a second shaft portion 82 at an upper end, the first shaft portion 81 being for coupling with the intermediate member 7, the second shaft portion 82 being for coupling with the brush head 2, further, the first shaft portion 81 being for fitting with the coupling hole 71, the second shaft portion 82 being for passing through the through hole 411 of the holder 4 and the through hole 13 (shown in fig. 2) of the first end 11 of the brush holder 1 and coupling with the coupling member 21 of the brush head 2, so that the brush head 2 is mounted while also being for transmitting vibration to the brush head 2, so that the brush head 2 vibrates.

The magnetic levitation motor commonly used in the market is replaced by a common motor, namely a motor 5, and the following technical effects can be achieved:

the magnetic suspension motor directly outputs vibration, the common motor drives the eccentric wheel to rotate at first, the centrifugal force generated by the eccentric wheel enables the middle piece and the output shaft to vibrate, and if the middle piece and the output shaft are abnormal, the motor is not directly abnormal, so that the service life of the common motor is prolonged, and the common motor has good stability.

Claims

1. An electric toothbrush comprises a brush handle and a brush head which are mutually combined, wherein the interior of the brush handle is of a cavity structure, the brush handle is provided with two opposite ends in the up-down direction, the brush head is detachably arranged at the first end of the brush handle, the electric toothbrush is characterized in that,

the brush holder comprises a support, a middle piece and an output shaft, wherein the support and the middle piece are arranged in the brush holder, and the output shaft is combined with the support.

2. The electric toothbrush according to claim 1, wherein the bracket includes upper and lower end portions opposite in an up-down direction and a groove portion between the upper and lower end portions, the electric toothbrush further comprising a motor and an eccentric mounted to the bracket, the groove portion for receiving at least a portion of the output shaft, the motor, the eccentric, and the intermediate member.

3. The electric toothbrush of claim 2, wherein the slot comprises a first slot for receiving at least a portion of the output shaft, the eccentric, and the intermediate member, a second slot for receiving the motor, and a third slot for receiving a battery electrically connected to the motor, the first slot being in communication with one another from top to bottom.

4. An electric toothbrush according to claim 2, wherein the motor comprises a connecting shaft at the upper end, the connecting shaft being connected to the eccentric.

5. The electric toothbrush of claim 4, wherein the eccentric has an input end coupled to the connecting shaft, an output end coupled to the intermediate member, and an eccentric mass.

6. The electric toothbrush of claim 5, wherein the eccentric further comprises a receiving portion located on the eccentric mass and a weighted portion received by the receiving portion.

7. The electric toothbrush according to claim 5, wherein the intermediate member has a coupling hole at an upper end for coupling with the output shaft and a coupling portion at a lower end, and further comprising a bearing coupled with the coupling portion for coupling with the output end of the eccentric.

8. The electric toothbrush according to claim 7 wherein the output shaft has a first shaft portion at a lower end for mating with the coupling hole of the intermediate member and a second shaft portion at an upper end for coupling with the brush head.

9. An electric toothbrush according to any one of claims 2 to 8 wherein the motor is a conventional motor.

10. The electric toothbrush according to claim 9, wherein the holder further comprises a step extending upward from the upper end portion and a through hole communicating the upper and lower ends of the upper end portion, the through hole being coupled to the output shaft and supporting the output shaft.