Opening and closing device for A curtain
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Solution Overview
Problem
Traditional curtain opening and closing devices lack adaptability due to fixed positions, making them unsuitable for various curtain sizes and guide parts.
Innovation Solution
An adjustable opening and closing device for curtains, featuring a mainframe with a driving wheel and a connecting mechanism that includes a hanging piece and bracket, allowing vertical movement to adjust tightness and improve applicability, along with a locked component using a shaft, wedge, and elastic member for secure positioning, and rollers for reduced friction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the opening and closing device is mounted on a guiding part with a fixed position, then the device structure is simple, but the adaptability to different sizes of guide parts is poor
Solution Approach 1:
The patent applies the dynamics principle by making the hanging piece movable relative to the bracket through a locking mechanism. The hanging piece can be adjusted vertically along the bracket to change the distance between the driving wheel and the guiding part outer wall, allowing the device to adapt to different guide part sizes. The locking component (shaft, wedge, and elastic member) enables dynamic adjustment while maintaining stability during operation, thus resolving the contradiction between adaptability and structural simplicity.
2Reliability
If the driving wheel is not attached closely to the guiding part outer wall, then the device structure is simple, but the driving efficiency and reliability are reduced
Solution Approach 1:
The movable hanging piece allows dynamic adjustment of the driving wheel's position relative to the guiding part. By moving the hanging piece vertically, the distance between the driving wheel and the guiding part outer wall can be optimized to ensure close attachment for reliable driving, while maintaining the ability to adjust for different scenarios.
Solution Approach 2:
The patent changes the parameter of the driving wheel-to-guiding part distance by allowing the hanging piece to move vertically. This parameter adjustment enables optimal contact between the driving wheel and guiding part for reliable operation, while the locking mechanism ensures the parameter remains stable during use.
3Adaptability or versatility
If the hanging piece position is fixed relative to the bracket, then the manufacturing and assembly are simple, but the tightness degree of the driving wheel cannot be adjusted
Solution Approach 1:
The hanging piece is designed to be movable relative to the bracket through a locking mechanism comprising a shaft, wedge, and elastic member. This dynamic structure allows adjustment of the hanging piece position to change the tightness degree of the driving wheel attachment, while the locking mechanism maintains simplicity in manufacturing and assembly by using standard mechanical components.
Solution Approach 2:
The elastic member (such as a spring) in the locking mechanism provides self-service by automatically exerting force to lock the hanging piece in position or to adjust it back to a default position, reducing the need for complex external actuation mechanisms and simplifying the overall structure.
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
Enables automatic and adaptable operation of curtains on different guide parts, enhancing usability and durability by allowing precise adjustment and secure locking, thus overcoming the limitations of traditional devices.
Implementation Method 1
the first elastic member is connected with the wedge. When the first elastic member is in natural state, the wedge is meshed with the rack, the compressing piece is pressed to drive the shaft to rotate so as to drive the the wedge away from the rack, the the first elastic member is in compressed state.
Data Source
AI summary
An opening and closing device for a curtain mounted on a guiding part, the guiding part is provided with the curtain; the opening and closing device is used for driving automatic opening and closing of the curtain; the opening and closing device includes a mainframe and a connecting mechanism. The mainframe includes a shell, a driver and a driving wheel; the driving wheel and the driver are mounted in the shell, the driver drive the driving wheel to rotate. The connecting mechanism includes a hanging piece and a bracket; a first end of the bracket is inserted into the shell, the hanging piece is movably connected with a second end of the bracket and hung on the guiding part; the hanging piece can be moved vertically relative to the bracket so that the driving wheel is attached closely to the outer wall of the guiding part.