Pet Tractor Button Mechanism for Rope Locking
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Solution Overview
Problem
Traditional pet tractors lack effective braking mechanisms, leading to accidents when pets suddenly run away, and existing buttons are prone to damage and locking failures due to impact, with only two states (locked and unlocked) that cannot accommodate the 'snubbing' process during traction.
Innovation Solution
A pet tractor design featuring a button-activated mechanism with a guide sleeve, return spring, and circumferentially spaced teeth allows for quick and secure locking of the turntable by sliding a tab into engagement with the teeth, distributing force away from the button to prevent damage and enabling 'snubbing' without continuous button pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a button is provided on the tractor to brake the turntable, then the turning of the turntable can be locked, but the traction of the pet towards the hauling rope may result in impact on the turntable and button, which is very easy to cause impact damage on the button and lead to locking failure
Solution Approach 1:
The patent introduces a tab as an intermediary component between the button and the turntable teeth. When the button is pressed, the tab moves along a guide hole and engages with the teeth to lock the turntable. This intermediary structure transfers the locking function away from the button itself, protecting the button from direct impact forces while maintaining reliable locking capability.
2Adaptability or versatility
If the usual button on the tractor has only two states including locked and unlocked states, then the structure is simple, but it cannot meet the need of 'snubbing' in the process of traction of the pet
Solution Approach 1:
The patent transforms the static two-state button into a dynamic three-state system through the tab mechanism. The tab can be positioned in multiple locations along the guide hole (engaged with teeth, partially engaged, or disengaged), enabling the system to achieve locked state, snubbing state, and unlocked state. This dynamic positioning capability provides adaptability for different operational requirements without significantly complicating the overall structure.
3Ease of operation
If the hauling rope is pulled out quickly when the pet suddenly runs away, then the pet can move freely, but the host cannot brake the turntable in the tractor in time to stop the pet, which is easy to cause an accident
Solution Approach 1:
The patent designs the tab to be automatically pushed by the button along the guide hole when the button is pressed. This self-actuating mechanism eliminates the need for additional操作步骤, allowing the operator to quickly lock the turntable by simply pressing the button. The tab automatically engages with the teeth to stop the turntable, providing rapid response time to prevent accidents when the pet suddenly runs away.
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 design allows for immediate braking of the turntable by pressing a button, preventing rope pull-out and extending button lifespan by directing force through the tab and housing, while enabling convenient locking and unlocking without constant button pressure.
Implementation Method 1
under the action of the elastic force of the return spring, the tab is separated from the teeth, and the turntable can rotate freely
Implementation Method 2
a guide sleeve, fixed in the housing, is provided inside with a guide hole extending along the radial direction of the turntable; a tab, in linkage with the button, is slidably arranged in the guide hole of the guide sleeve
Implementation Method 3
a plurality of circumferentially spaced teeth, engaging with the tab, are formed circumferentially around the turntable; after the button is pressed, the tab makes a linkage action to move inwardly along the radial direction of the turntable and engages with the teeth, and the turntable is tightly locked circumferentially
Data Source
AI summary
A pet tractor includes a housing with a handle formed thereon; a turntable rotatably disposed in the housing; a hauling rope coiled on the turntable, with the housing provided with a rope hole for drawing out the hauling rope, the handle being provided with a button partially exposed out of the housing; a guide sleeve, fixed in the housing, provided inside with a guide hole extending along the radial direction of the turntable; a tab, in linkage with the button, slidably arranged in the guide hole of the guide sleeve, with a return spring connected between the tab and the guide sleeve; and a plurality of circumferentially spaced teeth, engaging with the tab, are formed circumferentially around the turntable.