Pet Leash Switching Structure with Elastic Reset Mechanism
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Solution Overview
Problem
Current pet pulling piece locking structures are inconvenient to operate, have a complex design, short service life, and poor locking performance.
Innovation Solution
A switching structure with an elastic switch mechanism, comprising a shell, string roller, protruding stop portions, a big switch, small switch, and an elastic reset mechanism, allowing for locking by pressing down and pulling, and unlocking by pushing forward, with a simpler and more intuitive operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a locking structure is provided to prevent the string roller from continuing to release the string, then the pulling rope maintains a constant length, but the structure becomes complex and operation becomes inconvenient
Solution Approach 1:
The locking structure is segmented into distinct functional components: a locking block with multiple locking surfaces, a pressing lever with pressing portion, and a string roller with limiting grooves. This segmentation allows each component to perform its specific function efficiently while simplifying the overall design and making operation more intuitive.
Solution Approach 2:
The locking mechanism is designed to be self-locking through the interaction between the locking block's multiple locking surfaces and the string roller's limiting grooves. When the pressing lever is released, the elastic component automatically returns the locking block to its locked position, eliminating the need for additional locking actions or complex control mechanisms.
2Reliability
If a locking structure is provided to prevent the string roller from continuing to release the string, then the pulling rope maintains a constant length, but operation becomes inconvenient
Solution Approach 1:
The locking mechanism automatically engages when the pressing lever is released, with the elastic component driving the locking block into the locked position. This self-service feature eliminates the need for manual locking operations, significantly improving ease of operation while maintaining reliable locking.
Solution Approach 2:
Instead of requiring active engagement to lock, the design inverts the logic: the mechanism is locked by default, and unlocking requires active pressing of the lever. This inversion simplifies operation during normal use while providing a clear, intentional action for unlocking when needed.
3Reliability
If a locking structure is provided to prevent the string roller from continuing to release the string, then the pulling rope maintains a constant length, but service life becomes short
Solution Approach 1:
The locking block is divided into multiple locking surfaces that can engage with different limiting grooves on the string roller. This segmentation distributes wear across multiple contact points rather than concentrating it on a single point, significantly extending the service life of the locking mechanism while maintaining consistent locking performance.
Solution Approach 2:
The locking block is designed to rotate dynamically to engage different locking surfaces with different limiting grooves. This dynamic capability allows the mechanism to adapt to wear patterns over time, extending service life by redistributing mechanical stress and preventing localized wear degradation.
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 elastic switch structure provides a comfortable and convenient operation, with improved locking performance and a more straightforward mechanism, enhancing user experience and durability.
Implementation Method 1
an elastic reset mechanism is arranged under the bottom of the big switch shaft, when the locking block is rotated to lock the string roller, the elastic reset mechanism is in a compressed state
Data Source
AI summary
Disclosed is a switching structure for pet pulling piece. The switching structure includes a shell, a string roller is provided inside the shell, a pulling belt is coiled with the string roller, a plurality of protruding stop portions are provided on the string roller in a circle, a switch locking structure is provided on the shell, the string roller is locked through the switch locking structure; an elastic switch structure used in the disclosure is more comfortable in hand when used, can be locked by a pressing down and pulling action, can be unlocked by pushing forward a small switch, and has a more convenient operation.