一种锁紧刷头的释放装置
By using the elastic clip and the recessed drive shaft for compression and the guide slope design, the electric toothbrush head can be easily unlocked and stably locked with one click, solving the problems of multiple steps and loosening in the existing technology, and providing a waterproof seal.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN BAOFENGTONG ELECTRICAL APPLIANCES MFG CO LTD
- Filing Date
- 2025-07-22
- Publication Date
- 2026-07-17
AI Technical Summary
The existing electric toothbrush head locking mechanism requires multiple steps and is prone to loosening, affecting the performance and lifespan of the brush.
The system employs a flexible locking mechanism that engages with the recessed drive shaft. One-click unlocking is achieved through the compression of the guide ramp and the deformable opening. Combined with positioning components and a sliding groove structure, it ensures stable locking and waterproof sealing.
It enables simple and reliable locking and unlocking of the brush head, avoiding the complicated operation of traditional rotary structures, ensuring stable locking force for long-term use and providing waterproof function.
Smart Images
Figure CN224505643U_ABST
Abstract
Claims
1. A release device for locking a brush head, characterized in that Given: Brush head body: has a connecting end on one side; Drive mechanism: It is provided with a transmission part and a drive shaft extending to the outside of the transmission part and the inside of the connecting end. A locking cavity is provided between the inside of the drive shaft and the connecting end, and a recess perpendicular to the axial direction of the drive shaft is provided in the locking cavity. Positioning mechanism: It is provided with an elastic locking member and a pushing member surrounding the recessed attachment. The elastic locking member presses against the recess and has a deformed opening facing the pushing member. The pushing member penetrates the side wall of the connecting end and is movably connected to the locking cavity. The pushing member has a guide slope facing the elastic member on the side facing the elastic member, which expands towards the elastic member. The opposite guide slope presses against the deformed opening.
2. The release device for locking the brush head according to claim 1, characterized in that, A first positioning element is fixedly installed in the locking cavity and movably connected to the drive shaft, and the recess is provided on the outer side of the positioning element.
3. A brush head locking release device according to claim 2, wherein A first positioning member is fixedly connected to the outside of the first positioning member. The first positioning member has a sliding hole on the side facing the deformable opening, and the pushing member passes through the sliding hole.
4. A brush head locking release device according to claim 3, wherein The sliding hole has an abutment groove on its inner side, and the pusher has a protrusion that matches the abutment groove.
5. A release device for locking the brush head according to any one of claims 1-4, characterized in that, The guide ramp includes: A first inclined plane is arranged perpendicular to the sliding direction of the pusher, and the first inclined plane includes a near side with a shorter distance and a far side with a larger distance.
6. The release device for locking the brush head according to claim 5, characterized in that, The bottom of the first slope includes an arc-shaped surface that smoothly transitions between the slope and the bottom surface.
7. The release device for locking the brush head according to claim 5, characterized in that, A second inclined plane is provided at the bottom of the distance between the two first inclined planes. The two second inclined planes are trapezoidal in structure, and the two second inclined planes form a double guide zone with the two first inclined planes respectively.
8. The release device for locking the brush head according to claim 3, characterized in that, A second positioning component is fixedly provided at the end of the drive shaft. A sealing ring is provided at one end of the first positioning component and one end of the second positioning component. The first positioning component is made of flexible material and wraps around the push component. The first positioning component has formed a waterproof structure with a locking cavity.
9. A release device for locking the brush head according to claim 2, characterized in that, The depression includes: The first groove in the first positioning member is used to accommodate the elastic member on the side away from the deformation opening; The second sliding groove in the first positioning member is used to accommodate the two ends of the deformable opening of the elastic member; The third groove in the drive shaft matches the pressure accumulation in the middle section of the elastic element.
10. A brush head locking release device according to claim 3, wherein The first positioning member includes a first groove and a second groove along the sliding direction. The pushing member is provided with a limiting protrusion on the side near the first groove and the second groove. The limiting protrusion includes an arc-shaped end that gradually shrinks towards the drive shaft. The first groove and the second groove include arc-shaped end faces that are recessed towards the drive shaft.