Roofing Clamp With Sliding Joint For Thermal Expansion
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Solution Overview
Problem
Existing clamps for securing metal sheets to roofing beams fail to ensure perfect alignment and compensation for thermal expansion, leading to noise and damage due to improper positioning and lack of expansion compensation.
Innovation Solution
A clamp with a horizontal base surface and vertical bearing surface, featuring through-holes and raised ribs, allows for relative sliding movement and coplanar arrangement, enabling precise alignment and thermal expansion compensation, and can be fixed using screws for speed and ease of production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If clamps are fixed using nail guns to beams and stringers, then fixing speed is achieved, but correct positioning and perpendicular alignment cannot be ensured
Solution Approach 1:
The clamp incorporates pre-formed guiding ribs and positioning features that are created during manufacturing. These features guide the clamp into correct alignment with beams and stringers before fixing occurs, ensuring proper positioning is achieved in advance of the actual fastening operation.
Solution Approach 2:
The clamp acts as an intermediary element between the metal sheet and the roof structure. It includes dedicated bearing surfaces and guiding ribs that interface with beams and stringers, mediating the connection and ensuring correct alignment while allowing for thermal expansion movements.
2Stability of the object's composition
If clamps are fixed in a stationary manner to beams and stringers, then structural stability is achieved, but thermal expansion compensation is not possible
Solution Approach 1:
The clamp incorporates a joint between the base surface and bearing surface that enables relative sliding movement in the longitudinal direction. This dynamic feature allows the clamp to adapt to thermal expansion and contraction of metal sheets while maintaining stable attachment to the roof structure through friction and geometric constraints.
Solution Approach 2:
The clamp design allows for controlled changes in the relative position between its base surface and bearing surface through sliding movement. This parameter change enables the clamp to accommodate dimensional changes in metal sheets due to temperature variations while maintaining structural integrity.
3Ease of operation
If clamps are fixed at angles not perfectly at right angles to beams, then fixing flexibility is achieved, but roof noise increases due to improper alignment
Solution Approach 1:
The clamp includes guiding ribs and bearing surfaces that act as intermediaries to ensure correct alignment between metal sheets and roof structure. These features guide the clamp into proper perpendicular alignment during installation, preventing misalignment-induced noise while maintaining ease of installation through the forgiving joint design.
4Stability of the object's composition
If clamps use stationary fixing to prevent movement, then positioning stability is achieved, but expansion damage and leaks occur over time
Solution Approach 1:
The joint between base surface and bearing surface enables dynamic adjustment through sliding movement, allowing the clamp to maintain stable positioning while accommodating thermal expansion. This dynamic capability prevents the development of damaging stresses that would occur with completely rigid fixed connections.
Solution Approach 2:
The clamp design allows for reversible adjustment through sliding movement, enabling the connection to adapt to changing dimensional conditions over time without permanent deformation or damage to the roofing system.
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 clamp ensures quiet and durable roofing by allowing precise alignment and compensating for thermal expansion, providing a fixing speed comparable to nailing with superior tensile strength and reduced noise from temperature-induced movements.
Implementation Method 1
compensate for the relative movements of the metal sheets due to the thermal expansion thereof
Data Source
Figure 1~2
Figure 3~4
AI summary
Clamp for securing metal sheets (2) to roofing beams (3), comprising a horizontal base surface (10) in which at least two through-holes (11) are formed, a bearing surface (20), substantially perpendicular to the base surface (10), the base surface (10) being provided with raised transverse ribs (18a) and at least one raised longitudinal rib (18b), wherein fastening together of the base surface (10) and the bearing surface (20) is performed by means of a joint (16,21a,21b) between a horizontal edge (15) of the base surface and a horizontal foot (21) of the vertical surface (20) which provides at least one degree of freedom for relative sliding of the base surface (10) and bearing surface (20) in the longitudinal direction (X-X)