CN213879529U

CN213879529U - Electric toothbrush and driving mechanism thereof

Info

Publication number: CN213879529U
Application number: CN202022590841.6U
Authority: CN
Inventors: 罗宁
Original assignee: Cixi Saijia Electronics Co ltd
Current assignee: Cixi Saijia Electronics Co ltd
Priority date: 2020-11-11
Filing date: 2020-11-11
Publication date: 2021-08-03
Anticipated expiration: 2030-11-11

Abstract

The utility model discloses an electric toothbrush is further provided, including a brush holder and an at least brush head, the brush holder includes an at least shell, a drive mechanism, a motor and a drive shaft, drive mechanism install in the inside of shell, the motor be installed in inside the drive mechanism, the one end of drive shaft is fixed in drive mechanism's one end, drive mechanism's the other end by movably install in the shell, the motor vibrates, in order to pass through drive mechanism transmission extremely the drive shaft, the brush head by detachably install in the drive shaft, in order to by the drive shaft drive.

Description

Electric toothbrush and driving mechanism thereof

Technical Field

The utility model relates to an oral cavity cleaning field especially relates to an electric toothbrush and actuating mechanism thereof.

Background

Electric toothbrushes are becoming necessary in daily life. The operation of the drive mechanism of the electric toothbrush affects the use and user experience of the electric toothbrush. The motor of a conventional power toothbrush often has a drive shaft that extends through the housing of the power toothbrush to the exterior for mounting the brushhead of the power toothbrush. The motor is fixed inside the housing. The installation of motor and shell often needs to form the motor chamber through support or inside muscle that sets up and fix, and this needs the structure of the shell of electric toothbrush outward appearance according to the difference design support shape respectively and the muscle in motor chamber to the shell of adaptation various shapes. The structural design of the interior of the housing becomes complicated.

In addition, the fixing mode of the motor and the shell influences the efficiency of kinetic energy output of the motor, and if the motor is fixed, the shimmy amplitude of the motor is limited. If the motor is installed too loosely, performance may become unstable.

There is therefore a need to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An advantage of the present invention is to provide an electric toothbrush and a driving mechanism thereof, the tail end of the driving mechanism of the electric toothbrush is movably installed to ensure the output efficiency of the driving mechanism.

Another advantage of the present invention is to provide an electric toothbrush and a driving mechanism thereof, wherein the driving mechanism is driven by a lever structure.

The other advantages and features of the invention will be fully apparent from the following detailed description and realized by means of the instruments and combinations particularly pointed out in the appended claims.

According to an aspect of the utility model, the utility model provides an electric toothbrush, include:

a brush handle, said brush handle comprising at least a housing, a transmission mechanism, a motor and a drive shaft, said transmission mechanism being mounted inside said housing, said motor being mounted inside said transmission mechanism, one end of said drive shaft being fixed to one end of said transmission mechanism, the other end of said transmission mechanism being movably mounted inside said housing, said motor vibrating to be transmitted to said drive shaft through said transmission mechanism; and

at least one brush head removably mounted to the drive shaft to be driven by the drive shaft.

According to the utility model discloses an embodiment, drive mechanism includes a driving medium and a linkage, the motor be installed in the inside of driving medium, the linkage be cup jointed in the driving medium, with the driving medium is connected.

According to an embodiment of the present invention, the handle further comprises at least one elastic member, the elastic member is mounted to the end of the link fixing the driving shaft, and the elastic member becomes the fulcrum of the lever.

According to an embodiment of the present invention, the transmission member includes a sleeve portion and an installation portion, the motor is installed inside the sleeve portion, the link is coupled to an outer side of the sleeve portion, the installation portion is formed at one end of the sleeve portion, the installation portion is fixed to the housing, at least a portion of the installation portion is deformed by force so that the sleeve portion is movable.

According to an embodiment of the present invention, the mounting portion includes at least one elastic portion, at least one fixing portion and at least one connecting portion, the connecting portion extends from one end of the sleeve portion, the elastic portion extends outward from the connecting portion to form, the connecting portion connects the sleeve portion and the elastic portion, the fixing portion is formed at least one end of the elastic portion, the fixing portion is fixed to the housing by being mounted, so that the transmission member is movably mounted to the housing.

According to an embodiment of the present invention, the mounting portion includes at least one elastic portion and at least one fixing portion, one end of the elastic portion is fixed to the sleeve portion, the other end of the elastic portion extends a certain distance in a direction opposite to the fulcrum, and then bends to extend a certain distance in a direction opposite to the fulcrum, and the fixing portion is formed at the other end of the elastic portion and fixed to the vicinity of the fulcrum.

According to the utility model discloses an embodiment, the driving medium the linkage with drive shaft connection forms the lever, the lever with the elastic component is the fulcrum motion, wherein motor drive the driving medium, the elastic component deformation, so that the driving medium is mobile, the driving medium drives the linkage motion, and then makes the drive shaft motion, brush head vibration.

According to an embodiment of the invention, the brush handle further comprises at least one sealing element mounted at an outer side of the end portion of the housing for sealing a gap between the end portion of the housing and the drive shaft.

According to another aspect of the present invention, the present invention further provides an actuating mechanism, including:

at least one motor;

at least one transmission piece, wherein the transmission piece comprises a sleeve part and an installation part, the installation part is formed at one end of the sleeve part, and at least one part of the installation part can be deformed so as to enable the sleeve part to move along with the deformation;

at least one linkage piece, the linkage piece is sleeved outside the sleeve part, and the linkage piece is linked with the sleeve part; and

a drive shaft, one end of which is fixed to the linkage member so as to move in accordance with the movement of the linkage member.

According to an embodiment of the present invention, the driving mechanism further comprises at least one elastic member, the elastic member is installed in the end portion of the driving shaft fixed by the link member, the driving shaft, the link member and the transmission member are connected to form a lever, and the lever moves with the elastic member as a fulcrum.

Drawings

Fig. 1 is a perspective view of an electric toothbrush according to a preferred embodiment of the present invention.

Fig. 2 is an exploded view of a handle of a powered toothbrush in accordance with a preferred embodiment of the present invention.

Fig. 3 is an internal schematic view of a handle of a powered toothbrush in accordance with a preferred embodiment of the present invention.

Fig. 4 is a perspective view of a drive mechanism of a power toothbrush in accordance with a preferred embodiment of the present invention.

Fig. 5 to 7 are movement diagrams of a driving mechanism of a power toothbrush according to a preferred embodiment of the present invention.

Fig. 8 is a schematic view of a drive mechanism of a power toothbrush in accordance with another preferred embodiment of the present invention.

Detailed Description

The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The embodiments of the invention described below and shown in the drawings are to be regarded as examples only and do not limit the invention. Any variations or modifications may be made to the embodiments of the invention without departing from the principles described.

Referring to the drawings of the present invention, fig. 1 to 7, an electric toothbrush according to a preferred embodiment of the present invention is disclosed and illustrated in the following description.

As shown in fig. 1, the electric toothbrush includes a handle 10 and a head 20, the head 20 is mounted to one end of the handle 10, and the handle 10 drives the head 10 to vibrate.

Referring to fig. 2 to 4, the handle 20 includes at least one housing 21, and the housing 21 forms a cavity therein for accommodating components. The handle 20 further comprises at least one motor 22, at least one transmission member 23, at least one linkage member 24 and a drive shaft 25. The motor 22 is installed inside the transmission member 23, and the link member 24 is sleeved outside the transmission member 23. The linkage 24 and the transmission member 23 are sleeved together to reduce the overall length and reduce the distance over which kinetic energy is transmitted. One end of the drive shaft 25 is fixed to one end of the link 24. The driving shaft 25 and the transmission member 23 are respectively fixed by two ends of the linkage member 24. The transmission member 23 and the linkage member 24 are sequentially and fixedly installed to form a transmission mechanism, and the transmission mechanism transmits the kinetic energy output by the motor 22 to the driving shaft 25. The kinetic energy is output from the motor 22 to the transmission member 23, and is further transmitted to the link member 24, and finally drives the drive shaft 25 fixed to the link member 24 to vibrate.

The transmission member 23 includes a sleeve portion 231 and a mounting portion 232, and the mounting portion 232 is formed at one end of the sleeve portion 231. The sleeve portion 231 is hollow and sleeve-shaped. The motor 22 is mounted in the sleeve portion 231, and is fixed to the sleeve portion 231. The link 24 is sleeved outside the sleeve portion 231, and the transmission member 23 and the link 24 are connected to form the transmission mechanism. The mounting portion 232 is fixedly mounted to the housing 21 so that the transmission mechanism is mounted to the housing 21. At least a portion of the mounting portion 232 may be deformed such that at least a portion of the mounting portion 232 may be displaced. The mounting portion 232 is deformed and displaced, and the sleeve portion 231 is movable relative to the housing 21. The transmission member 23 is movably mounted to the housing 21 to enable transmission.

The mounting portion 232 includes at least one elastic portion 2321 and at least one fixing portion 2322, and at least one fixing portion 2322 is formed on at least one side of the elastic portion 2321. The fixing portion 2322 is fixedly attached to the housing 21. The elastic part 2321 is made of an elastic material, and the elastic part 2321 is elastically deformed by a force and is movable relative to the fixing part 2322.

At least one mounting position 2111 is disposed in the housing 21 corresponding to the fixing portion 2322 for mounting and fixing the fixing portion 2322.

The mounting portion 232 further includes a connecting portion 2323, and the connecting portion 2323 connects the elastic portion 2321 and the sleeve portion 231. The connection portion 2323 extends from one end of the sleeve portion 231, and the elastic portion 2321 extends from the connection portion 2323 to at least one side. The elastic portion 2321 has at least one bending portion, so that the elastic portion 2321 can be stretched and extended for a certain distance. When the elastic portion 2321 is pressed by a force, the elastic portion can also contract and deform. The fixing portion 2322 is formed at an end of at least one side of the elastic portion 2321. Since the elastic part 2321 can be stretched or contracted, the elastic part 2321 can move in at least one direction when being applied with a force. The sleeve 231 is connected to the elastic portion 2321 through the connection portion 2323, and when the sleeve 231 is driven by the motor 22, the elastic portion 2321 is deformed by a force, and the sleeve 231 moves in at least one direction.

When the sleeve portion 231 is driven by the motor 22, the force applied to the sleeve portion 231 from the motor 22 is transmitted to the elastic portion 2321, and the elastic portion 2321 is deformed by the force, thereby pulling the sleeve portion 231 to move in at least one direction.

In an example of the present invention, the elastic part 2321 is formed by bending and extending from the connecting part 2323 to both sides, and the fixing parts 2322 are respectively formed at both ends of the elastic part 2321 to be fixed to the housing 21. The elastic portion 2321 is deformed and moved between the fixing portions 2322.

The elastic portion 2321 has a W-shape, and intersects with the extending direction of the connection portion 2323. In other examples of the present invention, the elastic portion 2321 is W-shaped and parallel or close to the extending direction of the connecting portion 2323. In another example of the present invention, the elastic portion 2321 may be formed in any shape that can be deformed and elongated, such as a V-shape or a U-shape, so that the sleeve portion 231 can move.

The mounting portion 2111 of the housing 21 corresponding to the fixing portion 2322 may be an insertion hole for fixing the fixing portion 2322 to the housing 21 by a screw, or may be a slot for inserting the fixing portion 2322 into the slot and fixing the fixing portion to the housing 21 by a component such as a screw.

The linkage 24 is hollow, and has openings at two ends, respectively, the opening at one end of the linkage 24 is used for the sleeve portion 231 to extend into, and the sleeve portion 231 moves towards at least one direction to drive the linkage 24 to move towards at least one direction. The other end of the linkage 24 is open to allow one end of the driving shaft 25 to be inserted and fixed. The movement of the linkage member 24 in at least one direction causes the drive shaft 25 to move in at least one direction. The driving shaft 25, the linkage 24 and the transmission member 23 are connected in sequence, so that the kinetic energy is output from the transmission member 23 to the linkage 24, and the driving shaft 25 is driven to move.

The transmission mechanism is mounted to the housing 21. The housing 21 includes a driving portion 211 and an energizing portion 212, and the transmission mechanism is mounted to the driving portion 211. The housing 21 also has an end portion 2112, the end portion 2112 having a through hole for the drive shaft 25 to pass through. One end of the driving shaft 25 passes through the end portion 2112, extends into one end of the link member 24, and is fixed to the link member 24. The driving shaft 25, the linkage 24 and the transmission member 23 are connected in sequence to form a lever.

When the motor 22 is started, the transmission member 23 is driven by the driving of the motor 22, and the linkage member 24 is driven by the transmission member 23 to drive the driving shaft 25. The motor 22 outputs kinetic energy to the lever, causing the lever to move.

One end of the lever is mounted to the housing 21 through the mounting portion 232. Since the elastic portion 2321 can be elastically deformed so that one end of the lever can move, the lever as a whole can be moved by the driving of the motor 22.

When the transmission member 23 is driven by the motor 22, the transmission member 23 moves, and the elastic portion 2321 is deformed under force. The transmission member 23 is movably mounted to the housing 21 through the elastic portion 2321. When the motor 22 outputs kinetic energy, the transmission member 23 is forced to move.

The brush handle 20 further comprises a resilient member 26, the resilient member 26 is mounted on the link member 24 for fixedly mounting one end of the driving shaft 25, and the end of the driving shaft 25 is fixed to the link member 24 through the resilient member 26.

After the linkage 24 is installed in the housing 21, the elastic member 26 is located inside the end portion 2112 of the housing 21, and the through hole of the elastic member 26 communicates with the end portion 2112 of the housing 21 for the driving shaft 25 to pass through.

The driving shaft 25, the link 24 and the transmission member 23 are connected in sequence to form the lever, and the fulcrum of the lever is located at the elastic member 26. The lever moves with the elastic member 26 as a fulcrum.

The handle 20 further includes at least one seal 27, the seal 27 being mounted to the outside of the end 2112 of the housing 21, the end of the drive shaft 25 being mounted to the housing 21 through the seal 27. The seal 27 seals the gap between the end 2112 of the housing 21 and the drive shaft 25 to achieve a watertight seal.

Fig. 5 to 7 show the movement of a drive mechanism of the electric toothbrush, which includes the motor 22, the transmission member 23, the link member 24, and the drive shaft 25. When the motor 22 is not started, the elastic portion 2322 of the transmission member 23 is in an initial state. The transmission 23, the linkage 24 and the drive shaft 25 are stationary and the levers are balanced. When the motor 22 is started, the transmission member 23 receives a force from the motor 22, the elastic portion 2322 is deformed, and the sleeve portion 231 moves in at least one direction, so as to drive the linkage member 24 to move in at least one direction, and further drive the driving shaft to move in at least one direction. When the motor 22 moves in another direction, the elastic portion 2322 is reversely deformed, and the sleeve portion 231 moves in at least another direction, so as to drive the link 24 to move in at least another direction, and further drive the driving shaft 25 to move in at least another direction. The drive mechanism moves in at least two directions.

The elastic member 26 is a fulcrum P, and when the transmission member 23 drives the linkage member to move in at least one direction, the driving shaft is pried to move in at least one opposite direction by using the elastic member 26 as the fulcrum P. The lever moves about a fulcrum P.

After the elastic portion 2322 of the transmission portion 23 is deformed by a force, it is restored to its original shape by an elastic force, so as to pull the sleeve portion 231 to move in the opposite direction.

The driving mechanism is fixedly installed through the installation part 232 at the tail end, can adapt to installation of shell structures in different shapes, and is high in applicability.

Fig. 8 shows another preferred embodiment of the present invention, which is different from the above preferred embodiment in that the driving mechanism includes a transmission portion 23A, and the transmission portion 23A includes a sleeve portion 231A and an installation portion 232A. One end of the mounting portion 232A is fixed to one end of the sleeve portion 231A. The mounting portion 232A includes at least one elastic portion 2321A and at least one fixing portion 2322A. One end of the elastic portion 2321A is fixed to an end of the sleeve portion 231A fixed to the drive shaft 25. The elastic portion 2321A extends a certain distance to the side of the sleeve portion 231A opposite to the fulcrum P, and then bends to extend a certain distance to the fulcrum P in the opposite direction. The fixing portion 2322A is formed at an end of the elastic portion 2321A in the direction toward the drive shaft 25. The fixing portion 2322A is fixed to the housing 21, so that the transmission member 23A is mounted on the housing 21. The motor 22 is mounted in the sleeve portion 231A, and the link 24 is sleeved outside the sleeve portion 231A. The drive shaft 25 is fixed to the link 24, forming the drive mechanism. . The driving shaft 25, the link 24 and the transmission member 23 are connected in sequence to form the lever.

The elastic portion 2321A extends from the end of the sleeve 231A in the direction of the fulcrum P, and the fixing portion 2322A at the end is fixed near the fulcrum P to extend the arm length of the lever between the fulcrum P and the transmission member 23, thereby enhancing the transmission effect. The fixing portion 2322A may be fixed to a side of the position of the fulcrum P, and the distance between the fixing portion and the fulcrum P is the smallest, or may be fixed to a side of the link 24, so that the length of the moment arm is extended to a certain extent.

It will be understood by those skilled in the art that the embodiments described above and shown in the drawings are given by way of example only and are not limiting of the present invention, and that any alterations, modifications and the like which would be readily apparent to those skilled in the art may be made without departing from the principles of the present invention.

Claims

1. An electric toothbrush, comprising:

2. The electric toothbrush according to claim 1, wherein the transmission mechanism includes a transmission member and a link member, the motor being mounted inside the transmission member, the link member being sleeved on the transmission member and connected to the transmission member.

3. The electric toothbrush of claim 2, wherein the handle further comprises at least one resilient member mounted to an end of the linkage that secures the drive shaft, the transmission member, the linkage and the drive shaft being connected to form a lever that pivots on the resilient member.

4. The electric toothbrush according to claim 3, wherein the transmission member includes a sleeve portion and a mounting portion, the motor is mounted inside the sleeve portion, the link member is coupled outside the sleeve portion, the mounting portion is formed at one end of the sleeve portion, the mounting portion is fixed to the housing, and at least a portion of the mounting portion is deformed by a force to allow the sleeve portion to move.

5. The electric toothbrush according to claim 4, wherein the mounting part includes at least one elastic part extending from one end of the sleeve part, at least one fixing part formed to extend outward from the connecting part, and at least one connecting part connecting the sleeve part and the elastic part, the fixing part being formed at least one end of the elastic part, the fixing part being mounted to the housing such that the driving member is movably mounted to the housing.

6. The electric toothbrush according to claim 4, wherein the mounting portion includes at least one elastic portion and at least one fixing portion, one end of the elastic portion is fixed to the sleeve portion, the other end of the elastic portion is bent to extend in a direction opposite to the fulcrum by a certain distance after extending in a direction opposite to the fulcrum by a certain distance, and the fixing portion is formed at the other end of the elastic portion and fixed to a vicinity of the fulcrum.

7. The electric toothbrush according to claim 5 or 6, wherein the motor drives the transmission member, the elastic portion deforms to allow the transmission member to move, the transmission member drives the linkage member to move, so that the driving shaft moves, and the brush head vibrates.

8. The electric toothbrush of claim 7, wherein the handle further comprises at least one seal mounted to an outside of the end of the housing to seal a gap between the end of the housing and the drive shaft.

9. A drive mechanism, comprising:

at least one motor;

10. The driving mechanism according to claim 9, wherein the driving mechanism further comprises at least one elastic member, the elastic member is mounted on an end of the link member where the driving shaft is fixed, and the driving shaft, the link member and the transmission member are connected to form a lever, and the lever moves with the elastic member as a fulcrum.

11. The drive mechanism according to claim 10, wherein the mounting portion includes at least one elastic portion, at least one fixing portion, and at least one connecting portion, the connecting portion extends from one end of the sleeve portion, the elastic portion extends outward from the connecting portion, the connecting portion connects the sleeve portion and the elastic portion, the fixing portion is formed at least one end of the elastic portion, and the fixing portion is mounted and fixed to the housing such that the transmission member is movably mounted to the housing.

12. The electric toothbrush according to claim 10, wherein the mounting portion includes at least one elastic portion and at least one fixing portion, one end of the elastic portion is fixed to the sleeve portion, the other end of the elastic portion is bent to extend in a direction opposite to the fulcrum by a certain distance after extending in a direction opposite to the fulcrum by a certain distance, and the fixing portion is formed at the other end of the elastic portion and fixed to a vicinity of the fulcrum.