Rotatable Disc Head With Adjustable Slit Connection
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Solution Overview
Problem
Existing rotatable disc heads for floor treatment devices suffer from limited torque capacity and undesirable vibrations due to rigid elastic dampers and transverse deformations, leading to accelerated wear and uneven floor treatment.
Innovation Solution
An adjustable connection between coupling members allows transverse displacements, using a slit-oriented connection element that can slide and accommodate compression and traction loads, preventing shear loading and enabling adaptive positioning to maintain consistent floor treatment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If elastic dampers are rigidly connected to both coupling members, then damping effect is obtained, but transverse deformations cause vibrations and accelerated wear
Solution Approach 1:
The rigid connection between the elastic damper and coupling members is segmented into two parts: a fixed connection to one coupling member and a sliding connection to the other coupling member. This segmentation allows the damper to maintain its damping function while preventing transverse force transmission that causes vibrations and wear.
Solution Approach 2:
The connection type is changed from rigid to sliding, which alters the mechanical parameters of the system. The sliding connection permits transverse displacements and rotations, changing how forces are transmitted and distributed through the elastic damper, thereby eliminating the harmful vibrations and wear while preserving the damping effect.
2Adaptability or versatility
If a ball joint is used to connect coupling members, then pivotal movements are enabled, but torque capacity is limited
Solution Approach 1:
The connection system is made dynamic by introducing sliding connections that allow the elastic dampers to adjust their position and orientation during operation. This dynamic adaptation enables the system to maintain torque capacity while accommodating pivotal movements, as the sliding connections allow the dampers to optimize their load-bearing configuration.
3Stability of the object's composition
If elastic dampers are deformed in transverse directions, then connection is maintained, but unpredictable deformations occur
Solution Approach 1:
The sliding connection extracts the transverse deformation component from the elastic damper's load path. By allowing transverse displacements through the sliding mechanism, the damper is relieved of transverse forces and only experiences compression or extension loads, making its deformation behavior predictable and reliable.
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 reliable, rattle-free operation with improved damping and adaptability, ensuring consistent floor treatment even on uneven surfaces by allowing the connection elements to adjust their position based on pivoting movements, reducing vibrations and wear.
Implementation Method 1
the elastic connection elements (17) may consist of rubber
Implementation Method 2
The end of the connection member which is closest to the slit is able to slide along the coupling member according to the direction of the slit
Implementation Method 3
Said elastic dampers are rigidly connected to both of the coupling members. As a result of these rigid connections, the elastic dampers are deformed not only in compression as is desired for obtaining the damping effect
Implementation Method 4
The connection elements provide the desired damping action between the coupling members
Implementation Method 5
a pair of coupling members (6, 7) which are pivotably connected to each other according to pivot axes
Data Source
AI summary
A rotatable disc head for a floor treatment device includes a pair of coupling members which are pivotably connected to each other according to pivot axes which are transversely oriented with respect to each other. A rotation axis is defined which is transversely oriented with respect to the pivot axes. The coupling members are furthermore connected to each other by means of at least one elastically deformable connection element. One of the coupling members includes fitting means for mounting the coupling member to the rotary drive of the floor treatment device and the other coupling member includes carrier means onto which a floor treatment element, such as a grinding disc, can be mounted. The connection of the connection elements to one of the coupling members is an adjustable connection allowing displacements which are oriented transversely with respect to the rotation axis.