Emergency Self-Locking Pet Retractor Mechanism
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Solution Overview
Problem
Conventional pet retractors fail to effectively control pets, especially dogs, from rushing into the street or causing harm when they become excited or frightened, leading to potential injuries and property damage.
Innovation Solution
An emergency self-locking pet retractor with a collar, leash, leash spool, shell body, and grip handle, featuring an emergency self-locking device that includes a switch sliding block, return spring, self-locking sliding block, and torsion spring, which automatically locks the leash spool when the pet suddenly breaks free, preventing further movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a manual locking device is used in conventional retractable pet retractors, then the leash length can be controlled, but the pet can still suddenly break free and cause harm when excited or frightened
Solution Approach 1:
The emergency self-locking device automatically detects when the pet breaks free and locks the leash spool without requiring manual intervention. The switch sliding block is pushed forward by the sudden movement, triggering the self-locking sliding block to engage with the self-locking baffle, thereby automatically preventing the pet from escaping or causing harm.
Solution Approach 2:
The device is pre-configured with the self-locking mechanism that is ready to activate immediately when the pet attempts to break free. The return spring and torsion spring are pre-loaded to provide the necessary locking force, preventing the harmful action of the pet escaping before it can cause damage.
2Ease of operation
If the leash is made retractable to control pet movement, then the pet can be contained within a certain distance, but the pet can still rush into the street or attack when excited
Solution Approach 1:
The leash spool can rotate freely during normal use to allow the pet to move within the contained area, but the emergency self-locking device dynamically changes the state to locked when the pet attempts to escape or attack. This dynamic transition from movable to locked state provides both ease of operation during normal use and safety during emergency situations.
3Device complexity
If a simple manual lock is used, then the device structure remains simple, but it cannot respond automatically to sudden pet escape attempts
Solution Approach 1:
The emergency self-locking device uses the pet's own movement to trigger the locking mechanism. When the pet breaks free, the switch sliding block is pushed forward by the sudden movement, automatically activating the self-locking sliding block and torsion spring mechanism without requiring any external control or complex electronic systems.
Solution Approach 2:
The switch sliding block acts as an intermediary between the pet's escape movement and the locking mechanism. It translates the sudden movement into the activation of the self-locking sliding block, providing a simple mechanical transmission that achieves automatic response without adding significant complexity to the device structure.
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 device ensures pet safety and prevents harm to others and property by locking the leash when the pet tries to run or attack, thereby minimizing the risk of accidents and economic losses.
Implementation Method 1
a self-locking sliding block and a return spring thereof disposed in the shell body and attached to the switch sliding block
Implementation Method 2
a self-locking baffle and a return torsion spring thereof disposed on an external surface of the leash spool and whose one end is hinged on the leash spool
Data Source
AI summary
The present invention relates to a pet retractor, more particularly to an emergency self-locking pet retractor, comprising a collar, a leash, a leash spool, a shell body and a grip handle, in which it also comprises an emergency self-locking device. The emergency self-locking device includes a switch sliding block disposed on an external surface of the shell body and inserted into the shell body, a self-locking sliding block and a return spring thereof disposed in the shell body and attached to the switch sliding block, a self-locking baffle and a return torsion spring thereof disposed on an external surface of the leash spool and whose one end is hinged on the leash spool, and a self-locking baffle block disposed at the corresponding part on the external surface of the leash spool. When the pet suddenly breaks out or rises up, the emergency self-locking device can automatically lock the spool to prevent the leash from being pulled out, so that the pet cannot run around, attack people or damage properties. The pet is well protected from being hit by vehicles and it cannot hurt others. Consequently, the pet's safety is ensured, other people and properties will not be hurt or damaged and the owner's economic loss is avoided.