Retractable Dog Collar Leash With Dynamic Neck Fit Control
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Solution Overview
Problem
Existing dog collars with integrated retractable leashes require adjustment around the animal's neck and lack a contracting function, making them difficult to put on and potentially harmful if the leash is pulled too tightly.
Innovation Solution
A dog collar-leash combination with two free ends, where one end houses the leash and the other has a loop for the handle, allowing easy putting on and off, and featuring a retractable mechanism with adjustable spring force and a locking mechanism for various leash lengths, along with coupling means to convert into a conventional collar.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the collar is made with a fixed adjusted neck width, then the collar fits securely around the animal's neck, but the collar is difficult to put on and cannot accommodate different neck sizes
Solution Approach 1:
The collar transitions from a static fixed-width design to a dynamic adjustable design. The first end of the collar can be positioned at different locations along the collar body, allowing the effective neck circumference to be adjusted. This dynamic configuration enables the collar to be easily put on animals of different neck sizes while maintaining a secure fit.
2Ease of operation
If the leash is pulled tightly to restrain the animal, then the animal is controlled effectively, but the animal may be injured or strangled
Solution Approach 1:
The collar's dynamic design allows it to expand when the leash is pulled. As the leash tension increases, the collar can lengthen by moving the first end along the collar body, preventing excessive tightening and strangulation while maintaining effective control. This dynamic expansion capability protects the animal during restraint.
Solution Approach 2:
The collar's effective circumference is changed based on the leash tension. When the leash is pulled, the collar expands to a larger circumference, reducing the risk of strangulation. The parameter of collar tightness is dynamically adjusted according to the restraining force applied.
3Ease of operation
If the collar is made expandable to allow easy putting on, then the collar can accommodate different neck sizes, but the collar may become too loose to fit securely
Solution Approach 1:
The collar provides dynamic adjustment between compact and expanded states. When not in use, the collar maintains a compact secure fit. When putting on is required, the collar can be temporarily expanded by moving the first end, allowing easy placement, then returns to its secure compact configuration.
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 easy and safe application, adjustable fit, and secure leash management, preventing strangulation while allowing for comfortable handling and secure locking of the leash.
Implementation Method 1
a retracting mechanism with adjustable spring force
Data Source
AI summary
A dog collar-leash combination including a collar (1) and a leash (2) in a housing (20), which leash is made available by means of a rolling and unrolling mechanism (21). The leash (2) in the housing (20) can be unwound against a spring force. An outer end of the leash (2) has a grip (22). The collar (1) has first and second free ends (11, 12) and the housing (20) for the leash (2) is provided on the first end (11) and a loop (13), through which the leash (2) is fed, is provided on the second end (12).