Retractable Leash Assembly with Nested Dual Housings
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Solution Overview
Problem
Conventional retractable leashes are cumbersome and inconvenient for exchanging between scenarios where the leash is carried by both a user and an animal, and when carried solely by the animal, as the handle may retract awkwardly and be difficult to access.
Innovation Solution
A retractable leash assembly featuring a first housing connected to a first collar, a second housing connected to a second collar, a cord member between the two housings, and a retraction assembly, with the first housing having an opening to receive the second housing, and optionally a magnetic connection for secure mating, allowing for efficient switching between carrying scenarios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional retractable leash is used, then the leash can be carried by both user and animal, but the handle portion retracts awkwardly and becomes difficult to access when carried solely by the animal
Solution Approach 1:
The leash is divided into two separate housings (first housing and second housing) that can function independently. Each housing can be attached to a collar, allowing the leash to be worn by either the user or the animal alone, while maintaining full functionality in both scenarios
Solution Approach 2:
The second housing is designed to be received within the first housing, creating a nested configuration. This nesting allows the leash to maintain a compact form when carried solely by the animal, preventing awkward retraction while keeping the handle accessible
2Adaptability or versatility
If a conventional retractable leash is used, then the leash functions as a single unit, but the assembly becomes cumbersome when carried solely by the animal
Solution Approach 1:
The second housing nests within the first housing, allowing the leash assembly to maintain a compact form factor when carried solely by the animal. This nested configuration reduces the overall size and eliminates cumbersome protrusions while preserving all leash functions
Solution Approach 2:
Both housings are designed with universal functionality, each capable of being attached to a collar and housing the retraction mechanism. This multi-functionality allows either housing to serve as the primary carrier, reducing overall assembly complexity in different carrying scenarios
3Reliability
If a magnetic connection is added between housings, then secure attachment is achieved, but the device complexity increases
Solution Approach 1:
The magnetic connection replaces complex mechanical fastening mechanisms (such as screws, clips, or latches) with a simple magnetic field-based attachment system. This substitution achieves secure housing connection while significantly reducing the mechanical complexity of the connection mechanism
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 a user-friendly and efficient exchange of leash scenarios, providing a less cumbersome assembly when carried solely by the animal, with the magnetic connection ensuring secure attachment and easy access to the leash.
Implementation Method 1
the first housing including a first magnet, and the second housing including a second magnet configured to form a magnetic connection with the first magnet of the first housing
Data Source
AI summary
A retractable leash assembly for an animal includes a first housing, a second housing, a cord member, and a retraction assembly. The first housing may be configured to be connected to a first collar. The second housing may be configured to be connected to a second collar. The cord member may be connected between the first housing and the second housing. The retraction assembly may be connected to the cord member. The first housing may include an opening configured to receive at least a portion of the second housing.