Double Swivel Castor Brake Layout for Wear and Traction Control
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Solution Overview
Problem
Existing brakeable swivel castors have complex designs that lead to early wear, concealed wheel designs, and inadequate traction control, resulting in potential slipping or tipping of luggage items.
Innovation Solution
A simplified brakeable swivel castor design featuring a pivoting castor housing with adjustable braking device, allowing for easy wheel replacement and optimal traction control through a braking mechanism that exerts force parallel to the wheel axle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fork-like castor housing with a brake pedal is used to achieve braking effect, then braking force is generated, but wear on fastening and bearing appears early and wheel replacement becomes difficult
Solution Approach 1:
The castor housing is divided into two separate parts: a stationary housing and a movable brake shoe assembly. The brake shoe can be independently replaced without replacing the entire housing or fastening components, thus extending the service life of the fastening and bearing while maintaining reliable braking effect.
Solution Approach 2:
The brake shoe is designed as a movable component that can be adjusted and replaced independently. This dynamic design allows the brake shoe to wear and be replaced without affecting the permanent fastening and bearing components, solving the contradiction between maintaining braking reliability and extending component service life.
2Reliability
If a fork-like castor housing with brake pedal is used, then braking force is generated, but the design conceals the wheels making them non-replaceable
Solution Approach 1:
The castor assembly is segmented into replaceable wheel components and a stationary housing. The wheel can be independently removed and replaced from the stationary housing, maintaining full wheel replaceability while the separate brake shoe assembly provides the necessary braking effect.
Solution Approach 2:
The braking function is extracted as a separate movable brake shoe assembly that can be applied to the wheel without concealing it. The wheel remains externally accessible and replaceable, while the brake shoe provides the necessary braking effect when engaged.
3Reliability
If braking force is increased to prevent slipping, then traction is improved, but cases may tip over under certain movement forces
Solution Approach 1:
The brake shoe is designed with adjustable positioning that allows the braking force to be dynamically optimized. The brake shoe can be positioned to apply force at optimal points on the wheel, providing sufficient traction control while distributing forces to prevent case tipping.
Solution Approach 2:
The braking system allows for adjustment of braking parameters including the position and force application point of the brake shoe. By optimizing these parameters, sufficient traction is achieved without applying excessive force that would cause the case to tip over.
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 solution provides a cost-effective, durable, and low-wear braking system that allows for easy wheel replacement, ensuring stable and controlled movement of luggage items without total blocking of the castors.
Implementation Method 1
at least one brake shoe (14) arranged on the brake pedal (11) exerts a braking force parallel to the wheel axle (5) directly on one side of at least one wheel (7)
Data Source
AI summary
A swivel castor, having a housing which can be pivoted into a rolling direction via pivot means and two wheels rotatably mounted on the housing on a horizontal wheel axle, wherein the pivot means are arranged in front of the wheel axle, contrary to the rolling direction, and having a braking device designed to be adjustable between a braking position, in which the braking device exerts a braking force on at least one wheel, and a free-rolling position, in which the braking device releases the wheels. A brake pedal generating the braking force is pivotably mounted on the housing via a pedal axle, which extends parallel to the wheel axle and arranged between the wheels, and, in the braking position, at least one brake shoe arranged on the brake pedal exerts a braking force parallel to the wheel axle directly on one side of at least one wheel.