Clamping Device Lug Stability via Projecting Portion Abutment
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Solution Overview
Problem
Existing clamping devices with nut-and-bolt fasteners often deform the lugs under tightening forces, causing them to tilt and reducing the effectiveness of the clamping, and welding the tightening walls to the belt adds a costly and rigid link that limits movement.
Innovation Solution
Incorporating a projecting portion on the belt between the connection and tightening walls, which prevents the lugs from tilting by allowing the tightening wall to abut against it, maintaining some freedom of movement for optimal bearing and positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the tightening wall is welded to the belt to prevent lug deformation, then the lug stability is improved, but the manufacturing cost increases and the tightening wall loses freedom of movement
Solution Approach 1:
The tightening wall is separated from the belt, connected only by the lug structure. This segmentation allows the tightening wall to remain stable through structural design rather than welding, while maintaining freedom of movement. The lug acts as an independent connecting element that provides both stability and mobility.
Solution Approach 2:
The connection between the tightening wall and belt is made dynamic rather than rigid. The lug structure allows the tightening wall to move and adjust during tightening operations, optimizing bearing contact while preventing deformation through the geometric constraints of the lug geometry itself.
2Reliability
If assembly clearance is reduced to prevent lug deformation, then the clamping effectiveness is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The lug geometry is pre-designed with built-in constraints that prevent deformation before tightening forces are applied. The connection portion and tightening wall are shaped to resist unfolding, eliminating the need for tight assembly clearances. The structural design itself provides the necessary stability.
3Stability of the object's composition
If the tightening wall is made rigid to prevent deformation, then the lug stability is improved, but the bearing optimization is reduced
Solution Approach 1:
The tightening wall maintains freedom of movement through the lug connection, allowing it to dynamically adjust and optimize bearing contact during tightening. The movement is constrained by the lug geometry, providing stability, while still permitting the optimization needed for effective bearing.
Data Source
AI summary
A clamping device comprising: a collar (10) comprising: a belt (12) suitable for being disposed around one or more articles to be clamped, and at least two lugs (14, 16) that are upstanding relative to said belt towards the outside thereof; and a tightening system (18, 19) suitable for co-operating with the two lugs so as to move them closer together; in which device at least one of the two lugs has a connection portion via which it is connected to the belt (26), which connection portion is upstanding relative to said belt, and a tightening wall (30) folded back towards the belt, the tightening system coming into engagement with said tightening wall during tightening of the collar; wherein, on its outside face, the belt (12) has at least one projecting portion (40) situated between the connection portion and the tightening wall, the tightening wall (30) coming into abutment against said projecting portion (40) while the collar is being tightened.