Electric toothbrush rotating mechanism and electric toothbrush

Abstract

The technical scheme discloses a kind of electric toothbrush rotating mechanism and electric toothbrush.The electric toothbrush rotating mechanism, including drive assembly, rotating assembly, shell assembly;Drive assembly has motor, gear set, eccentric wheel, driving piece;Motor drives driving piece linear reciprocating swing by gear set, eccentric wheel;Rotating assembly has rotating wheel, rotating shaft;Rotating shaft is fixed with toothbrush head, and this rotating shaft is synchronous with rotating wheel rotation, and driving piece has rack to drive rotating wheel reciprocating rotation, and then make rotating shaft reciprocating rotation.The technical problem solved by the technical scheme is: design a new driving rotating mechanism, so that toothbrush rotates more stably.

Description

Technical Field

[0001] This utility model relates to an accessory for a motorized toothbrush, specifically a rotating mechanism for driving the toothbrush to rotate. This utility model also relates to an electric toothbrush using this accessory. Background Technology

[0002] Electric toothbrushes are a type of small household appliance used for cleaning teeth. Currently, there are various structures that drive the movement of toothbrushes. Some use a motor to drive gears to achieve the brushing effect, while others use a linkage mechanism. The disadvantage of this transmission method is that the drive shaft and the motor shaft cannot be made concentric, which makes it difficult to make the toothbrush smaller. Utility Model Content

[0003] The purpose of this invention is to provide an electric toothbrush rotation mechanism, and the technical problem to be solved is to design a new drive rotation mechanism to make the toothbrush rotate more smoothly.

[0004] Another objective of this invention is to provide an electric toothbrush using the aforementioned rotating mechanism.

[0005] The rotating mechanism of an electric toothbrush includes a drive assembly, a rotating assembly, and a housing assembly; The drive assembly includes a motor, a gear set, an eccentric wheel, and a drive component; the motor drives the drive component to reciprocate linearly through the gear set and the eccentric wheel. The rotating assembly has a rotating wheel and a rotating shaft; a toothbrush head is fixed on the rotating shaft, and the rotating shaft rotates synchronously with the rotating wheel. The driving component has a rack that drives the rotating wheel to rotate back and forth, thereby causing the rotating shaft to rotate back and forth. The housing assembly has a stabilizing part, and the driving member has a first straight groove at the corresponding position that is parallel to the direction of linear reciprocating swing. The stabilizing part is arranged in the first straight groove to make the linear reciprocating swing of the driving member smooth. The driving member is mounted with a positioning pin through it, and two springs are symmetrically placed on the positioning pin and simultaneously engage with the housing assembly in a spring-loaded manner.

[0006] The eccentric wheel has an eccentric protrusion at its eccentric position; the driving component has a longitudinally arranged second straight groove, and the aforementioned eccentric protrusion is arranged in the second straight groove to realize that the eccentric wheel drives the driving component to reciprocate linearly.

[0007] The housing assembly includes a first housing and a second housing; the stabilizing part is located inside the first housing, and the second housing and the driving component have positioning holes at positions that cooperate with the positioning pins.

[0008] The first housing has a first wrapping part at the end position, and the second housing has a second wrapping part at the end position; the first wrapping part and the second wrapping part are joined together to wrap and fix the bearing sleeved on the rotating shaft.

[0009] The rotating shaft is also fitted with a first limiting member and a second limiting member; wherein the first limiting member has a limiting sleeve and a limiting handle; the second limiting member is fitted inside the hollow shaft center position of the limiting sleeve, and the inside of the second limiting member is tightly fitted on the rotating shaft, and the second limiting member has a protruding limiting skirt to tightly fix the bearing; the limiting handle is fixed to the second wrapping part of the second housing.

[0010] The second housing has a limiting groove near the bottom of the driving component, and the corresponding part of the driving component is a limiting block. The limiting block, in conjunction with the spring, reciprocates linearly within the limiting groove.

[0011] The gear set includes a driving gear and a driven gear that mesh with each other; the driving gear is mounted on the rotating shaft of the motor, and the driven gear is mounted on an eccentric wheel to drive the eccentric wheel to rotate; the driven gear is also fixed on a gearbox to fix the position of the driven gear.

[0012] The rotating shaft is fitted with a bushing near the rotating wheel. The bushing is fixed between the first support part of the first housing and the second support part of the second housing to connect the rotating shaft.

[0013] Both the first and second wrapping parts have semi-circular bearing grooves, and the bearings are fixed in the bearing grooves.

[0014] An electric toothbrush includes the aforementioned electric toothbrush rotating mechanism, housing, and end cap; the electric toothbrush rotating mechanism is arranged within the component formed by the housing and end cap.

[0015] The beneficial effects of this utility model are as follows: By designing a driving component and an eccentric wheel, the rotating wheel and rotating shaft can be driven to rotate under the action of the motor and gear assembly, thereby completing the linear reciprocating oscillation of the toothbrush head; by designing the stabilizing part of the first housing to cooperate with the first straight groove of the driving component, and the limiting groove of the second housing to cooperate with the driving block of the driving component, and by cooperating with the springs and positioning pins on the left and right sides of the driving component, the top, bottom, and sides of the driving component can be effectively limited and fixed, thus making its oscillation very stable; by designing the first limiting part, the second limiting part, the bushing, and using two wrapping parts to fix the bearing, the rotating shaft is limited and fixed in multiple directions, ensuring the rotational stability of the rotating shaft and further improving the stability of the entire product. Attached Figure Description

[0016] Figure 1 This is a diagram of an electric toothbrush; Figure 2 yes Figure 1 An exploded view of an electric toothbrush, omitting components such as the outer casing and end cap; Figure 3 yes Figure 1An exploded view of an electric toothbrush from another angle, omitting components such as the outer casing and end cap; Figure 4 yes Figure 1 A front view diagram of an electric toothbrush disassembled; Figure 5 yes Figure 1 A front view diagram of an electric toothbrush from another angle, showing its disassembled structure. Figure 6 This is a schematic diagram of the driving component; Figure 7 This is a schematic diagram of the drive component from another angle; Figure 8 This is a schematic diagram of the first limiting component; Figure 9 This is a schematic diagram of the second limiting component; Figure 10 This is a diagram showing the layout of the internal components of an electric toothbrush, with only some components shown in cross-section. In the picture 11. Motor; 12. Drive wheel; 13. Driven wheel; 14. Gearbox; 15. Eccentric wheel; 151. Eccentric protrusion; 16. Drive component; 161. First straight groove; 162. Second straight groove; 163. Rack; 164. Limit block; 171. Locating pin; 172. Locating hole; 18. Spring; 21. Rotating wheel; 22. Rotating shaft; 23. Bushing; 24. First limiting member; 241. Limiting sleeve; 242. Limiting handle; 25. Second limiting member; 251. Limiting skirt; 26. Bearing; 31. First housing; 311. First support portion; 312. First wrapping portion; 313. Stabilizing portion; 32. Second housing; 321. Second support portion; 322. Second wrapping portion; 323. Limiting groove; 33. Bearing groove; 4. Outer shell; 5. Wear a hat. Detailed Implementation

[0017] Please refer to Figures 1 to 10 The electric toothbrush rotating mechanism shown in the diagram mainly consists of a drive component, a rotating component, and a housing component. The drive component generates a lateral reciprocating motion; the rotating component switches this motion to a rotary reciprocating motion, thus achieving the brushing effect; and the housing component supports, fixes, and limits the drive and rotating components, ensuring smooth operation. In practical applications, the components can be further optimized, existing parts can be replaced with equivalent parts, or additional components can be added.

[0018] The drive assembly shown in the diagram mainly consists of a motor 11, a gear set, a gearbox 14, an eccentric wheel 15, and a drive component 16. The motor 11 is primarily a micro motor 11, which can adopt the structure and model of existing electric toothbrush motors 11. The gear set consists of a driving wheel 12 and a driven wheel 13 meshing with each other; the driving wheel 12 is mounted on the shaft of the motor 11, and the driven wheel 13 is mounted on the gearbox 14 and drives the eccentric wheel 15 to rotate. The eccentric wheel 15 is mounted on the driven wheel 13 and has an eccentric protrusion 151 at its eccentric position, which facilitates insertion into the second straight groove 162 of the subsequent drive component 16, thereby driving the drive component 16 to oscillate laterally. The drive component 16 is a cross-shaped three-dimensional structure with a second straight groove 162 in the longitudinal direction and a straight rack 163 in the transverse direction. When the eccentric wheel 15 rotates, it causes the drive component 16 to reciprocate laterally in the second straight groove 162 through the eccentric protrusion 151. The rack 163 drives the rotating wheel 21 to rotate by meshing with it. To ensure the smooth lateral reciprocating motion of the drive component 16, a first straight groove 161 structure can be designed at its top. Simultaneously, a stabilizing part 313 structure extends inward from the first housing 31 of the housing assembly, embedding into the first straight groove 161 to form a first limiting structure. In addition to the top limiting structure, a positioning pin 171 can be inserted through the positioning hole 172 on the left and right sides near the bottom of the limiting component. Springs 18 are then symmetrically fitted onto the positioning pin 171, and the positioning pin 171 is simultaneously inserted into the positioning hole 172 on the inner wall of the second housing 32 of the housing assembly to form a spring-loaded fit, thus forming a second limiting structure. Furthermore, a protruding limiting block 164 structure can be designed at the bottom of the drive component 16, while a limiting groove 323 structure is designed in the second housing 32 near the bottom of the drive component 16. The limiting block 164 remains within the limiting groove 323, thus forming a third limiting structure. Through these three limiting designs, the smooth lateral reciprocating motion of the drive component 16 can be ensured.

[0019] The rotating assembly in the diagram mainly consists of a rotating wheel 21 and a rotating shaft 22. The rotating wheel 21 is a conventional gear structure, meshing with the rack 163 of the drive member 16. When the rack 163 of the drive member 16 reciprocates laterally, it drives the rotating member to rotate and reciprocate. The rotating shaft structure is installed at the center of the rotating wheel 21, thus transmitting the rotation of the rotating wheel 21 to the rotating shaft. The end of the rotating shaft is fitted with a toothbrush head, allowing the toothbrush head to rotate in accordance with the rotation of the rotating shaft. To ensure the stability of the rotating shaft 22, a bushing 23 is installed near the rotating wheel 21. This bushing 23 is fixed between the first support portion 311 of the first housing 31 of the housing assembly and the second support portion 321 of the second housing 32 of the housing assembly. This bushing 23 provides the function of the rotating shaft 22. To limit the rotation of the rotating shaft and ensure smooth rotation, a first limiting member 24 and a second limiting member 25 are also fitted onto the rotating shaft 22. As shown in the figure, the first limiting member 24 is located inside the housing assembly and is fitted onto the second limiting member 25. The first limiting member 24 is designed with a limiting sleeve portion 241 and a limiting handle portion 242. The limiting sleeve portion 241 is used to fit the second limiting member 25 into the hollow shaft center position of its limiting sleeve portion 241. The limiting handle portion 242 is formed by the downward extension of the limiting sleeve portion 241 and is used to insert and fix it onto the second wrapping portion 322 of the second housing 32 of the housing assembly, thereby fixing the first limiting member 24 to the second housing 32. The second limiting member 25 is hollow inside to facilitate fitting and close contact with the rotating shaft 22. The second limiting member 25 is also designed with a protruding limiting skirt structure, which can tightly fix the bearing 26.

[0020] The housing components in the figure are designed with a first housing 31 and a second housing 32, which enclose each other to support, fix or limit the battery, drive components, rotating components, etc.

[0021] In addition to the stabilizing portion 313 extending from the inner wall, the first housing 31 also has a first support portion 311 for fixing the bushing 23 and a first wrapping portion 312 for limiting and fixing the bearing 26, wherein the first wrapping portion 312 is located at the end of the first housing 31. The second housing 32 is designed with a second wrapping portion 322 at the end. Both the first wrapping portion 312 and the second wrapping portion 322 have semi-circular bearing grooves 33, so that when the first wrapping portion 312 and the second wrapping portion 322 are assembled together, the bearing 26 fitted on the rotating shaft 22 can be wrapped and fixed.

[0022] An electric toothbrush has a housing 4, an end cap 5, and the aforementioned electric toothbrush rotating mechanism; wherein the housing 4 and the end cap 5 are both existing components and are assembled with the aforementioned rotating mechanism using existing methods.

[0023] The specific embodiments described above are merely illustrative of the present technical solution and are not intended to limit the present technical solution. In the description of the present technical solution, it should be noted that terms such as "upper" and "inner" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are only for the convenience of describing the present technical solution and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present technical solution.

[0024] Furthermore, in the description of this technical solution, it should be noted that, unless otherwise explicitly specified and limited, the terms "fixed" and "fitting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this technical solution according to the specific circumstances.

[0025] Although embodiments of the present technical solution have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present technical solution, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An electric toothbrush rotating mechanism, characterized in that: The assembly includes a drive component, a rotating component, and a housing component. The drive component has a motor (11), a gear set, an eccentric wheel (15), and a drive member (16). The motor (11) drives the drive member (16) to reciprocate linearly via the gear set and the eccentric wheel (15). The rotating component has a rotating wheel (21) and a rotating shaft (22). A toothbrush head is fixed on the rotating shaft (22), and the rotating shaft (22) rotates synchronously with the rotating wheel (21). The drive member (16) has a rack (163) that drives the rotating wheel (21). The reciprocating rotation causes the rotating shaft (22) to reciprocate; the housing assembly has a stabilizing part (313), and the driving member (16) has a first straight groove (161) at the corresponding position that is parallel to the direction of linear reciprocating swing. The stabilizing part (313) is arranged in the first straight groove (161) to make the linear reciprocating swing of the driving member (16) smooth; the driving member (16) is fitted with a positioning pin (171), and two springs (18) are symmetrically placed on the positioning pin (171) and simultaneously engage with the housing assembly in a spring-loaded manner.

2. The electric toothbrush rotating mechanism according to claim 1, characterized in that: The eccentric wheel (15) has an eccentric protrusion (151) at its eccentric position; the drive member (16) has a longitudinally arranged second straight groove (162), and the eccentric protrusion (151) is arranged in the second straight groove (162) to realize that the eccentric wheel (15) drives the drive member (16) to reciprocate linearly.

3. The electric toothbrush rotating mechanism according to claim 1 or 2, characterized in that: The housing assembly includes a first housing (31) and a second housing (32); a stabilizing part (313) is located inside the first housing (31), and the second housing (32) and the driving member (16) have positioning holes (172) at the positions that cooperate with the positioning pin (171).

4. The electric toothbrush rotating mechanism according to claim 3, characterized in that: The rotating shaft (22) is also fitted with a first limiting member (24) and a second limiting member (25); wherein the first limiting member (24) has a limiting sleeve (241) and a limiting handle (242); the second limiting member (25) is fitted inside the hollow shaft center position of the limiting sleeve (241), and the inside of the second limiting member (25) is tightly fitted on the rotating shaft (22), and the second limiting member (25) has a protruding limiting skirt (251) to tightly fix the bearing (26); the limiting handle (242) is fixed to the second wrapping part (322) of the second housing (32).

5. The electric toothbrush rotating mechanism according to claim 4, characterized in that: The first housing (31) has a first wrapping part (312) at the end position, and the second housing (32) has a second wrapping part (322) at the end position; the first wrapping part (312) and the second wrapping part (322) are joined together to wrap and fix the bearing (26) sleeved on the rotating shaft (22).

6. The electric toothbrush rotating mechanism according to claim 3, characterized in that: The second housing (32) has a limiting groove (323) near the bottom of the drive member (16), and the corresponding part of the drive member (16) is a limiting block (164). The limiting block (164) works with the spring (18) to reciprocate linearly in the limiting groove (323).

7. The electric toothbrush rotating mechanism according to claim 3, characterized in that: The gear set includes a driving gear (12) and a driven gear (13) that mesh with each other; the driving gear (12) is mounted on the shaft of the motor (11), and the driven gear (13) is mounted on the eccentric wheel (15) to drive the eccentric wheel (15) to rotate; the driven gear (13) is also fixed on a gearbox (14) to fix the position of the driven gear (13).

8. The electric toothbrush rotating mechanism according to claim 3, characterized in that: The rotating shaft (22) is fitted with a bushing (23) near the rotating wheel (21). The bushing (23) is fixed between the first support part (311) of the first housing (31) and the second support part (321) of the second housing (32) to fit the rotating shaft (22).

9. The electric toothbrush rotating mechanism according to claim 5, characterized in that: Both the first wrapping part (312) and the second wrapping part (322) have semi-circular bearing grooves (33), and the bearing (26) is fixed in the bearing grooves (33).

10. An electric toothbrush, characterized in that: Includes the electric toothbrush rotating mechanism, housing (4), and end cap (5) as described in any one of claims 1-9; the electric toothbrush rotating mechanism is arranged within the component formed by the housing (4) and the end cap (5).

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