IP Library › Granted Patent US 12685625
Granted Patent B2
US 12685625 · App. 19/278,562 · Granted Jul 21, 2026

Electric oral cleaning tool

Inventor: Jixi Yang (Dongguan, CN)
A61C17/3436A46B13/008A46B13/023A61C17/3409A46B5/0095
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Quick Facts
Patent No.
US 12685625
App. No.
19/278,562
Granted
Jul 21, 2026
Kind
B2
Abstract

An electric oral cleaning tool, including: a housing, a transmission rod, and a brush head assembly. The brush head assembly is rotatably connected to an end of the housing, and a functional element is arranged on a side of the brush head assembly; a movable disk is arranged on another side of the brush head assembly, and the movable disk has a mating area offset from a center of the brush head assembly. The transmission rod is arranged in the housing and has an input end and an output end; the input end is configured to be connected to a transmission mechanism, and the output end is matched with the mating area; in condition of the output end moving with a variable diameter relative to a center of the movable disk, the output end drives the mating area and the brush head assembly to rotate.

Claims (27)

1 . An electric oral cleaning tool, comprising: a housing, a transmission rod, and a brush head assembly;

wherein the brush head assembly is rotatably connected to an end of the housing, and a functional element is arranged on a side of the brush head assembly; a movable disk is arranged on another side of the brush head assembly, and the movable disk has a mating area offset from a center of the brush head assembly;

the transmission rod is arranged in the housing and has an input end and an output end; the output end is eccentrically arranged relative to the input end in an axial direction of the transmission rod; the input end is configured to be connected to a transmission mechanism, the output end is directly connected to and matched with the mating area; and the output end is located within the mating area, in condition of the output end reciprocating with a variable diameter relative to a center of the movable disk, the output end moves linearly to directly drive the mating area to oscillate reciprocally and cause the brush head assembly to oscillate reciprocally; the variable diameter refers to a fact that a distance between the output end and the center of the movable disk changes during the reciprocating of the output end;

the transmission rod is integrally formed or at least the input end is integrally formed with the transmission rod;

the transmission rod or at least the input end is made of magnetizable material; and

the mating area is a groove, and the output end is arranged with a guide rod; the guide rod is disposed in the groove; a minimum distance between a center point of the guide rod and a central axis of the input end is 1.5-4.5 mm.

2 . The electric oral cleaning tool according to claim 1 , wherein a distance between the guide rod and the center of the brush head assembly is 2 mm-4 mm.

3 . The electric oral cleaning tool according to claim 2 , wherein the guide rod extends with a connecting block at an end away from the brush head assembly, and an inner side of the housing defines a limit groove; the connecting block is disposed in the limit groove and is movable longitudinally in the limit groove.

4 . The electric oral cleaning tool according to claim 1 , wherein the output end is connected to the input end by means of a bending, a welding, or a fitting, and a projection of the output end is “L”-shaped or “T”-shaped or grooved shape.

5 . The electric oral cleaning tool according to claim 1 , wherein the transmission rod or at least the input end is made of a plastic material mixed with magnetic powder.

6 . The electric oral cleaning tool according to claim 1 , wherein a guide ring is fixed to an inner wall of the housing, and the transmission rod passes through the guide ring and is capable of reciprocating longitudinally within the guide ring.

7 . The electric oral cleaning tool according to claim 1 , wherein a maximum longitudinal travel of the transmission rod is 1-5 mm, and a rotation angle of the brush head assembly is between −38° and 38°.

8 . The electric oral cleaning tool according to claim 1 , wherein a magnetic adsorption force of the output end is between 3.5N and 35N.

9 . An electric toothbrush, comprising the electric oral cleaning tool of claim 1 .

10 . An electric oral cleaning tool, comprising: a housing, a transmission rod, and a brush head assembly;

wherein the brush head assembly is rotatably connected to an end of the housing, and a functional element is arranged on a side of the brush head assembly; a movable disk is arranged on another side of the brush head assembly, and the movable disk has a mating area offset from a center of the brush head assembly;

the transmission rod is arranged in the housing and has an input end and an output end; the output end is eccentrically arranged relative to the input end in an axial direction of the transmission rod; the input end is configured to be connected to a transmission mechanism, the output end is directly connected to and matched with the mating area; and the output end is located within the mating area, in condition of the output end reciprocating with a variable diameter relative to a center of the movable disk, the output end moves linearly to directly drive-the mating area to oscillate reciprocally and cause the brush head assembly to oscillate reciprocally; the variable diameter refers to a fact that a distance between the output end and the center of the movable disk changes during the reciprocating of the output end;

the transmission rod is integrally formed or at least the input end is integrally formed with the transmission rod;

the transmission rod or at least the input end is made of magnetizable material; and

the mating area is a fixing rod, and the output end defines a connecting hole; the fixing rod is disposed in the connecting hole; when the output end moves longitudinally and drives the connecting hole to move longitudinally, the fixing rod moves transversely in the connecting hole.

11 . An electric oral cleaning tool, comprising: a housing, a transmission rod, and a brush head assembly;

wherein the brush head assembly is rotatably connected to an end of the housing, and a functional element is arranged on a side of the brush head assembly; a movable disk is arranged on another side of the brush head assembly, and the movable disk has a mating area offset from a center of the brush head assembly;

the transmission rod is arranged in the housing and has an input end and an output end; the output end is eccentrically arranged relative to the input end in an axial direction of the transmission rod; the input end is configured to be connected to a transmission mechanism, and the output end is matched with the mating area; the output end is configured to drive the mating area and the brush head assembly to oscillate reciprocally;

the transmission rod is integrally formed or at least the input end is integrally formed with the transmission rod;

the transmission rod or at least the input end is made of magnetizable material; and

the mating area is a groove, the output end is arranged with a guide rod; the guide rod is disposed in the groove, and a minimum distance between a center point of the guide rod and a central axis of the input end is 1.5-4.5 mm.

12 . An electric toothbrush, comprising the electric oral cleaning tool of claim 11 .