Pet Leash with Elastic Pull Section and Drag Retraction
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Solution Overview
Problem
Conventional pet leashes made of elastic materials cause the person to be dragged by the pet, leading to fatigue and are inconvenient to use, and fail to effectively prevent pets from breaking free and causing accidents.
Innovation Solution
A pet leash structure comprising multiple main leash bodies with through holes and drag leashes that can be passed through these holes, allowing for quick retraction of the leash to prevent accidents, with the drag leashes connected to the main leash body using machine sewing thread or adhesive, and optionally featuring a reinforcing plate and rewind assembly for enhanced connection strength and convenience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the leash body is made by elastic materials to allow stretching, then the pet can move freely, but the person is dragged by the pet causing fatigue
Solution Approach 1:
The leash is divided into multiple segments: a non-elastic main leash body (first leash body) that maintains fixed length and control, and an elastic pull section (second leash body) that allows controlled stretching. This segmentation enables the pet to move freely while the rigid main leash prevents the person from being dragged.
Solution Approach 2:
Different parts of the leash have different elastic properties - the main leash body is made of non-elastic material for stability and control, while only the pull section near the pet contains elastic material. This local differentiation allows pet movement freedom without transmitting dragging force to the person.
2Adaptability or versatility
If the leash body is made by elastic materials to allow stretching, then the pet can move freely, but the leash must be rolled to drag the pet back which is inconvenient
Solution Approach 1:
The elastic pull section automatically returns to its original length after being stretched, providing self-retraction functionality. The elastic material's restoring force naturally pulls the leash back without requiring the user to manually roll or wind it, making the system self-servicing.
3Adaptability or versatility
If the leash body is made by elastic materials to allow stretching, then the pet can move freely, but it is hard to effectively prevent the pet from bursting to result in traffic accidents
Solution Approach 1:
The leash is segmented into a rigid main leash body and an elastic pull section. The non-elastic main leash ensures that the maximum distance between the person and pet is fixed, providing reliable accident prevention, while the elastic pull section allows normal movement freedom within safe limits.
Solution Approach 2:
The elastic material is localized only in the pull section away from the handle, allowing pet movement freedom in the local region near the pet while maintaining global control and safety through the rigid main leash body that limits the maximum extension.
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 allows for a fixed distance between the person and pet, enabling quick retraction to prevent accidents while reducing the effort required to manage multiple pets, enhancing connection strength and usability.
Implementation Method 1
the pull section of the more than one main leash body is formed by an elastic belt
Implementation Method 2
the more than one drag leash is combined to the more than one main leash body by a machine sewing thread
Implementation Method 3
the more than one drag leash is combined to the more than one main leash body by an adhesive
Data Source
AI summary
A pet leash structure comprises a main leash body and a drag leash. The main leash body is weaved by a strap body and has a handle portion provided for a person to hold and a connection portion connected to a collar. A pull section is formed between the handle portion and the connection portion. The drag leash has a predetermined length and is connected to a tail end of the pull section. Therefore, a distance between the person and a pet may be fixed by pulling the drag leash so that the person may quickly drag the pet back by pulling the drag leash.