Helical Guide Drive Mechanism for Fast, Smooth Reciprocating Motion
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Solution Overview
Problem
Existing reciprocating movement structures in motors, such as those used in adult products, face limitations in reciprocating frequency and distance, often resulting in motor damage and stuck issues due to inefficient mechanisms like piston structures and crank mechanisms.
Innovation Solution
A driving mechanism comprising a rotary motor connected to a rotary member with a helical guide groove, a guide frame with a sliding slider, and a drive member that moves along the guide groove to enable smooth, high-frequency reciprocating movement, enhanced by a gearbox and ABS materials for improved stability and longevity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a piston structure or crank mechanism is used to implement reciprocating movement, then the movement can be achieved, but the reciprocating frequency is limited and the journey is shorter
Solution Approach 1:
The patent employs a cam structure with a curved profile instead of traditional piston or crank mechanisms. The cam's curved surface guides the follower through a reciprocating motion path, enabling both high reciprocating frequency and extended movement journey by optimizing the curvature geometry of the cam profile.
Solution Approach 2:
The invention uses a dynamic cam-follower mechanism where the cam rotates continuously to dynamically generate the reciprocating motion. This dynamic approach allows for higher operating frequencies compared to static piston structures, while the cam profile design ensures adequate stroke length for extended journey.
2Productivity
If the stretching frequency is increased in existing adult products, then the reciprocating frequency improves, but a stuck problem is easy to occur with unsmooth stretching
Solution Approach 1:
The cam structure features a carefully designed curved profile that ensures continuous smooth contact between the cam surface and follower. This curvature design prevents abrupt changes in motion direction, eliminating sticking problems even at high reciprocating frequencies by maintaining uniform pressure distribution and smooth transition throughout the motion cycle.
3Adaptability or versatility
If a piston structure is used for reciprocating movement, then the movement can be implemented, but the structure is not conducive to application on adult products and has shorter journey
Solution Approach 1:
The cam structure with its curved profile provides a compact design suitable for adult product applications while maintaining extended movement journey. The curved cam surface allows for optimized space utilization compared to piston structures, enabling both high adaptability and sufficient stroke length.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enhances the reciprocating movement frequency and stability, reducing the risk of motor damage and improving user experience by allowing for longer journeys without sticking issues, suitable for both massaging and adult products.
Implementation Method 1
a helical guide groove is formed in an outer wall of the rotary member; a drive member is disposed on an inner wall of the slider, and the drive member partially extends into the guide groove and can slide along a length direction of the guide groove so as to drive the slider to move back and forth
Data Source
AI summary
A driving mechanism capable of moving back and forth quickly, including a rotary motor and a guide frame, wherein the rotary motor is connected to a rotary member, a helical guide groove is formed in an outer wall of the rotary member, the guide frame is installed above the rotary motor, the guide frame is slidingly installed with a slider in a vertical direction, a drive member is disposed on an inner wall of the slider, the drive member can slide along a length direction of the guide groove, and drive the slider to move back and forth in a vertical direction.