Patent Application
20220160119
The utility model relates to the technical field of toothbrushes, and in particular, to a U-shaped electric toothbrush.
In order to keep dental health, people need to brush teeth every day with toothbrushes. Toothbrushes are generally classified into a traditional manual toothbrush and an electric toothbrush. Cleaning teeth through vibration of a brush head, an existing electric toothbrush makes the teeth cleaner and is more convenient to use compared to a manual toothbrush. Although the existing electric toothbrush brings great convenience to people's life, the following problems still exist during actual use. During tooth brushing through vibration, bristles have a relatively small amplitude of vibration, which makes it difficult to achieve a best cleaning effect, results in low cleaning efficiency, increases the time for tooth brushing, and leads to poor user experience.
The utility model provides a U-shaped electric toothbrush to address deficiencies in the prior art. The U-shaped electric toothbrush can increase cleaning efficiency of electric toothbrushes, reduce the time for cleaning, and improve user experience.
In order to achieve the above objectives, the utility model adopts the following technical solutions.
A U-shaped electric toothbrush includes a handle and a U-shaped brush head, the U-shaped brush head including an inner brush piece and an outer brush piece separated from each other, bristles being provided on both opposite surfaces of the inner brush piece and the outer brush piece, and a driving device configured to drive the inner brush piece and the outer brush piece to move in a reciprocating and alternating manner being provided on the handle, the driving device including a motor, a connecting rod, a connecting sleeve sheathed on the connecting rod, and a gear set, the motor driving, through the gear set, the connecting rod and the connecting sleeve to move in a reciprocating and alternating manner in a radial direction of the connecting rod, the outer brush piece being connected to an upper end of the connecting sleeve and being drivable to move by the connecting sleeve, an upper end of the connecting rod passing through the connecting sleeve and protruding upward, and the inner brush piece being connected to the upper end of the connecting rod and being drivable to move by the connecting rod.
As a preferred solution, a first connecting member is provided at the upper end of the connecting sleeve, and a lower end of the outer brush piece is wrapped around an outer side of the first connecting member upon assembly.
As a preferred solution, the first connecting member has first connecting arms that are arc-shaped and extend toward two sides.
As a preferred solution, a second connecting member is provided at the upper end of the connecting rod, and a lower end of the inner brush piece is wrapped around an outer side of the second connecting member upon assembly.
As a preferred solution, the second connecting member has second connecting arms that are arc-shaped and extend toward two sides.
As a preferred solution, the gear set includes a driving gear, a first double gear, a second double gear, a third double gear, a first driven gear, and a second driven gear, the first double gear, the second double gear, and the third double gear each having a large gear ring at a lower end and a small gear ring at an upper end, the driving gear being connected to an output shaft of the motor, the large gear ring of the first double gear meshing with the driving gear, the large gear ring of the second double gear meshing with the small gear ring of the first double gear, the large gear ring of the third double gear meshing with the small gear ring of the second double gear, the first driven gear and the second driven gear respectively meshing with the small ring gear of the third double gear, a first cam rotating with the first driven gear being provided at an upper end of the first driven gear, a first driving arm protruding radially outward being provided on the connecting sleeve, a first driving hole mating with the first cam being provided on the first driving arm, the first cam being embedded in the first driving hole and being capable of driving the first driving arm to move, a second cam rotating with the second driven gear being provided at an upper end of the second driven gear, a second driving arm protruding radially outward being provided on the connecting rod, a second driving hole mating with the second cam being provided on the second driving arm, and the second cam being embedded in the second driving hole and being capable of driving the second driving arm to move.
As a preferred solution, the first driving arm and the second driving arm are configured to protrude in different directions.
As a preferred solution, the U-shaped electric toothbrush further includes a gear box configured to accommodate the gear set, the gear box including an upper box body and a lower box body, the upper box body being provided with a first through hole for the output shaft of the motor to pass through, and the upper box body being provided with a second through hole for the connecting sleeve to pass through.
The utility model has apparent advantages and beneficial effects compared with the prior art. Specifically, the U-shaped brush head is divided into the inner brush piece and the outer brush piece, and the driving device configured to drive the inner brush piece and the outer brush piece to move in a reciprocating and alternating manner is provided on the handle, so that during tooth brushing, the inner brush piece and the outer brush piece are drivable to move in a reciprocating and alternating manner in upward and downward directions in an oral cavity to clean teeth with the bristles. Therefore, the amplitude of motion of the bristles is increased, cleaning efficiency is improved, the time spent by a user on tooth brushing is shortened, and user experience is enhanced. In addition, the reciprocating and alternating driving of the inner brush piece and the outer brush piece can be achieved through mere cooperation of the connecting rod and the connecting sleeve, so that an overall volume of the U-shaped toothbrush is reduced, thus increasing the brushing efficiency.
In order to describe structural features, technical means, specific purposes and functions of the utility model more clearly, the utility model is described in further detail below with reference to the accompanying drawings and specific embodiments.
In the description of the utility model, it is to be noted that orientation or position relationships indicted by terms such as “center”, “upper”, “lower”, “left”, “right”, “vertical”, “horizontal”, “inner”, “outer” are based on orientation or position relationships shown in the accompanying drawings, are merely for facilitating the description of the utility model and simplify the description, instead of indicating or implying that the indicated position or element needs to have particular orientations or be constructed and operated in particular orientations, and therefore cannot be construed as a limitation on the utility model.
In the description of the present invention, it should be noted that unless otherwise explicitly specified or defined, the terms such as “mount”, “install”, “connect”, and “connection” should be understood in a broad sense. For example, the connection may be a fixed connection, a detachable connection, or an integral connection; or the connection may be a mechanical connection or an electrical connection; or the connection may be a direct connection, an indirect connection through an intermediary, or internal communication between two components. A person of ordinary skill in the art can understand specific meanings of the terms in the utility model according to specific situations.
As shown in
Specifically, a first connecting member 231 is provided at the upper end of the connecting sleeve 23, and a lower end of the outer brush piece 11 is wrapped around an outer side of the first connecting member 231 upon assembly. A second connecting member 241 is provided at the upper end of the connecting rod 24, and a lower end of the inner brush piece 12 is wrapped around an outer side of the second connecting member 241 upon assembly. The first connecting member 231 has first connecting arms that are arc-shaped and extend toward two sides, and the second connecting member 241 has second connecting arms that are arc-shaped and extend toward two sides. By disposing the first connecting member 231 and the second connecting member 241, the connection between the outer brush piece 11 and the inner brush piece 12 is more stable, thus increasing a service life of the electric toothbrush. In the utility model, the first connecting member 231 is detachably sheathed on an outer side of the upper end of the connecting sleeve 23, and the second connecting member 241 is detachably sheathed on an outer side of the upper end of the connecting rod 24.
As shown in
Based on the above, in the utility model, the U-shaped brush head is divided into the inner brush piece and the outer brush piece, and the driving device configured to drive the inner brush piece and the outer brush piece to move in a reciprocating and alternating manner is disposed on the handle, so that the inner brush piece and the outer brush piece are drivable to move in a reciprocating and alternating in upward and downward directions in the oral cavity to clean teeth with the bristles. Therefore, the amplitude of motion of the bristles is increased, cleaning efficiency is improved, the time spent by a user on tooth brushing is shortened, and user experience is enhanced. In addition, the reciprocating and alternating driving of the inner brush piece and the outer brush piece can be achieved through mere cooperation of the connecting rod and the connecting sleeve, so that an overall volume of the U-shaped toothbrush is reduced, thus increasing the brushing efficiency.
The above description is merely preferred embodiments of the utility model, and is not intended to limit the utility model. Therefore, any modification, equivalent replacement, and improvement actually made to the above embodiments according to the technology of the utility model still fall within the scope of the technical solutions of the utility model.
| Number | Date | Country | Kind |
|---|---|---|---|
| 202022770882.3 | Nov 2020 | CN | national |
