Pet Leash Rotation Control Device with Self-Locking Mechanism
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Solution Overview
Problem
The existing pet leash winding machine requires two separate actions to lock and unlock, making the process inconvenient for users.
Innovation Solution
A rotation control device with a casing, cover, and wheel, featuring a locking button, unlocking button, and self-lock slider connected by springs, allowing for single-action locking and unlocking through a mechanism where the self-lock slider locks the locking button after pressing the locking button, and the unlocking button releases the self-lock slider to unlock the leash by pressing the unlocking button.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a locking button and auxiliary button are used to lock the winding machine, then the locking function is achieved, but the operation becomes inconvenient and complex
Solution Approach 1:
The locking mechanism automatically locks itself after the locking button is pressed, without requiring a separate auxiliary button. The self-locking feature is achieved through the interaction between the self-lock slider and the locking button, where the slider automatically engages to maintain the locked state
Solution Approach 2:
The locking and self-locking functions are merged into a single operation. By integrating the self-lock slider with the locking button mechanism, the patent combines what was previously two separate actions (pressing locking button + pressing auxiliary button) into one unified action (pressing locking button only)
2Adaptability or versatility
If two buttons are used for locking and unlocking, then the control function is complete, but the device complexity increases
Solution Approach 1:
The auxiliary button is extracted from the system entirely. Instead of having a separate auxiliary button for locking, the patent removes this component and replaces it with a self-locking mechanism that uses the existing locking button and a self-lock slider, thereby reducing the number of buttons and simplifying the control interface
Solution Approach 2:
The locking button serves multiple functions: it initiates the locking action and also triggers the self-locking mechanism. The self-lock slider acts as an intermediary that both responds to the locking button press and maintains the locked state, making the system more versatile with fewer components
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 simple, convenient single-action locking and unlocking of the pet leash, improving user experience by streamlining the operation with repeated spring rebound mechanisms.
Implementation Method 1
The locking button, the unlocking button, and the self lock slider are capable of removing within a predetermined distance. After the locking button is pressed, the self lock slider locks the locking button... During the operation, the springs are rebounded repeatedly.
Data Source
AI summary
A rotation control device for pet leash includes a casing, a cover, and a wheel disposed in the casing. The casing includes a locking button, an unlocking button, and a self lock slider connected with a locking spring, an unlocking spring, and a self lock spring respectively. The unlocking button has an unlocking retaining hole having a position corresponding to an unlocking column on the casing. The unlocking button includes an unlocking retaining pole is inserted into an unlocking sliding groove of the casing. The locking button has a locking retaining rectangular hole having a position corresponding to a locking column on the casing. The self lock slider includes a self lock retaining pole is inserted into a self lock sliding groove in the casing, wherein the self lock retaining pole is against an unlocking retaining pole.