Telescopic Upright Alignment via Brush Guide and Gutter
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Solution Overview
Problem
Telescopic uprights face issues with blocking and friction due to misalignment and clearance between concentric sections, leading to difficulty in extension and potential deformation of profiles.
Innovation Solution
Incorporating a gutter on the internal face of the external profile to house the brush, which acts as a guide and reduces clearance, along with a screw-nut system for secure alignment and a bead for interlocking to prevent deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If clearance is provided between the two sections to enable sliding, then the sections can move relative to each other, but this clearance induces offset between the sections which generates frictional forces and blocking
Solution Approach 1:
The brush mounted on the internal profile acts as an intermediary element between the two sections. It fills the clearance gap while maintaining contact, serving as a mediator that prevents offset and misalignment during sliding motion, thereby eliminating frictional blocking forces
Solution Approach 2:
The invention changes the physical state of the clearance by introducing a brush that transforms the empty gap into a controlled contact interface. The brush bristles adapt to the clearance dimensions while maintaining consistent contact pressure, changing the interaction parameter from frictionless clearance to controlled frictional contact that prevents misalignment
2Object-affected harmful factors
If a brush is added to prevent dust passage through the gap, then sealing is improved, but the brush increases clearance thickness which accentuates frictional forces and causes blocking
Solution Approach 1:
The brush serves dual functions as an intermediary: it seals the gap against dust while simultaneously acting as a guide element that maintains alignment during sliding. The brush mounted on the internal profile mediates between the sealing requirement and the sliding smoothness requirement
Solution Approach 2:
The brush performs multiple functions simultaneously: it seals the clearance gap to prevent dust passage, guides the sliding motion to maintain alignment, and reduces frictional forces by distributing contact pressure. This multi-functionality resolves the contradiction between sealing and sliding smoothness
3Object-affected harmful factors
If the brush is mounted on the internal profile, then dust passage is prevented, but the brush surface creates high pressure forces on the external profile causing deformation
Solution Approach 1:
The brush is mounted locally on the internal profile at the connection wall, concentrating the sealing function at a specific location rather than distributing it throughout. This local mounting reduces the overall pressure force on the external profile while maintaining effective dust sealing at the critical gap location
Data Source
Figure 1a~1c
Figure 2a~2c
Figure 3~4
AI summary
Telescopic upright (1') intended to be positioned in an opening, such as a door or window opening delimited by a frame or of the type delimited by adjacent walls, in order to form an upright of a frame arranged to accommodate a shutter element, for example a tarpaulin (27), said telescopic upright comprising: - a first external profile (12) and - a second internal profile (1), said first (12) and second (1) profiles being concentric and arranged to cooperate by sliding