Keder Rail Clamping Structure for Low-Shear Sheet Mounting
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing clamping devices for bendable materials in bellows and passenger boarding bridges experience high shear forces during the insertion of the piping body into the piping rail, which can lead to damage or weakening of the web material.
Innovation Solution
The clamping device features a piping body with an expansion groove and an expansion body that changes from a feed state to a locked state when the piping body is inserted, reducing shear forces by ensuring the expansion body is pressed into the expansion groove, preventing the piping body from being removed without excessive force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the keder body is made elastically deformable to enable feeding through the slot, then the ease of operation is improved, but high shear forces occur between the web and the side wall surfaces of the keder rail, leading to damage or weakening of the web
Solution Approach 1:
The keder body is divided into a first clamping section and a second clamping section separated by an expanding groove. This segmentation allows the keder body to be compressed during feeding and then expand to lock in place, reducing shear forces on the web while maintaining ease of operation.
Solution Approach 2:
The keder body transitions from a compressed state during feeding to an expanded locked state after insertion. This dynamic transformation allows the keder body to be easily fed through the slot in the compressed state and then expand to engage with the guide groove, reducing shear forces on the web material.
2Ease of operation
If the keder body is compressed during feeding, then the ease of operation is improved, but the locking reliability may be compromised if the keder body does not expand sufficiently
Solution Approach 1:
The keder body is segmented into two clamping sections that can independently engage with the guide groove. This segmentation ensures that even if one section does not expand fully, the other can still provide reliable locking, maintaining both ease of operation and locking reliability.
Solution Approach 2:
The expanding groove is positioned to allow localized expansion of the keder body at the locking interface. This local quality change ensures that the keder body expands sufficiently at the critical locking point while maintaining overall structural integrity and reliability.
3Reliability
If the keder body expands after insertion, then the locking reliability is improved, but the device complexity increases due to the expanding mechanism
Solution Approach 1:
The keder body utilizes the elastic properties of its own material to automatically expand after insertion. The expanding groove allows the keder body to self-expand without requiring external actuation mechanisms, maintaining locking reliability while minimizing device complexity.
Solution Approach 2:
The keder body changes its physical parameters (shape and volume) through elastic deformation. By utilizing the inherent elastic properties of the material, the keder body can transition from a compressed feeding state to an expanded locked state without additional complex mechanisms.
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
This design effectively reduces shear forces on the web material during insertion, preventing damage and ensuring a secure, self-locking connection that can withstand dynamic loads.
Implementation Method 1
the keder body with the spreading groove and the spreading body are designed such that when the spreading body is inserted to its maximum depth into the spreading groove, the spreading body projects beyond the keder body or the clamping sections of the spreading body in the feed direction
Implementation Method 2
the keder body with the spreading groove and the spreading body are designed such that when the keder body is fed together with the track through the feed slot into the clamping space, the spreading body is pressed into the spreading groove by the track
Implementation Method 3
the expanding body pushes the first and the second clamping section apart in such a way that the keder body transitions from the feeding state to the locked state
Data Source
Figure 1~2
Figure 3~5
Figure 6~7
AI summary
The present invention relates to a clamping device for mounting a track made of a flexible material, wherein the clamping device comprises a keder rail and a keder body, wherein the keder rail has a guide groove with a clamping chamber and a feed slot, wherein the keder body is designed such that it can be moved from a feed state to a locked state, wherein in the feed state the keder body can be fed into the clamping chamber in a feed direction through the feed slot, and wherein the guide groove and the keder body are designed such that in the locked state the keder body fills the clamping chamber in such a way that the keder body cannot be removed from the clamping chamber through the feed slot.According to the invention, the keder body has an expanding groove, wherein the expanding groove is arranged in the keder body such that the expanding groove divides the keder body section by section into a first and a second clamping section, wherein the clamping device has an expanding body, wherein the expanding body is arranged in the expanding groove and is movable relative to the keder body at least in the feeding state of the keder body, wherein the keder body with the expanding groove and the expanding body are designed such that when the keder body is fed together with the web through the feeding slot into the clamping chamber, the expanding body is pressed into the expanding groove against the feeding direction, so that the expanding body pushes the first and the second clamping section apart in such a way that the keder body transitions from the feeding state to the locked state.