Retractable Pet Leash Locking Assembly for Rush Prevention
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Solution Overview
Problem
Existing pet traction devices lack effective control mechanisms to prevent pets from rushing out and causing accidents.
Innovation Solution
A pet tractor with a housing, rope winding assembly, locking assembly, and blocking assembly, where the rope winding member rotates around a shaft, and a movable member limits the rope winding when the rotation speed exceeds a preset speed, using a blocking assembly to restrict the rope length.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a simple rope牵引 device is used, then the device structure is simple, but the control ability for pets is poor and pets can rush out easily
Solution Approach 1:
The patent applies dynamics by making the blocking assembly movable rather than fixed. The blocking assembly can dynamically adjust its position along the rope winding member to abut against different circumferential positions, enabling automatic control of rope extension based on rotational speed without requiring complex electronic control systems
Solution Approach 2:
The blocking assembly automatically activates when the rope winding member rotates too quickly. The centrifugal force generated during rapid rotation causes the blocking assembly to move and abut against the rope winding member, automatically limiting further rope extension without requiring external intervention or complex control mechanisms
2Length of moving object
If the rope length is made long to allow pet movement, then the pet movement range is large, but the pet may rush out and cause accidents
Solution Approach 1:
The system provides mechanical feedback through the blocking assembly that responds to the rotational speed of the rope winding member. When the rope is pulled quickly indicating the pet is rushing, the blocking assembly detects this through centrifugal force and automatically limits further rope extension, providing real-time feedback control to prevent harmful outcomes
Solution Approach 2:
The blocking assembly is pre-positioned to intervene before the pet can rush out completely. When rapid rotation is detected, the blocking assembly proactively limits rope extension in advance, preventing the situation where the pet could escape or cause accidents rather than merely reacting after the fact
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 system effectively controls the pet's movement range by limiting the rope extension, reducing the risk of the pet rushing out and causing harm.
Implementation Method 1
when the rotation speed of the rope winding member exceeds a preset rotation speed, a rotation centrifugal force of the rope winding member is too large, so that the movable member can limit the rope winding member by means of abutting against the blocking assembly
Data Source
AI summary
The present disclosure provides a pet tractor and a traction device. The pet tractor includes a housing, a rope winding assembly, a locking assembly, and a blocking assembly, wherein the housing defines a mounting cavity, and the mounting cavity is provided therein with a first rotation shaft; the rope winding member is rotationally connected to the first rotation shaft, and one end of the movable member is movably connected to the rope winding member; the locking assembly is connected to the housing, and the locking assembly is movably connected to one end of the tractor rope; and the blocking assembly can abut against or separate from one end of the movable member.