Boltless Cable Clamp With Ratchet Mechanism
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Solution Overview
Problem
Conventional cable clamps cause damage to electrical cables during installation and maintenance due to contact with screw threads, leading to wear and potential electrical short-circuits, especially when cables are removed or moved.
Innovation Solution
A boltless clamp design featuring a resilient tooth-like ratchet mechanism that securely connects clamp portions without the need for bolts or studs, allowing easy installation and removal of cables while minimizing contact with potentially damaging surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional bolted clamps are used to secure cables, then the cable is retained in a desired location, but the cable outer layer wears and integrity is compromised due to contact with screw threads
Solution Approach 1:
The patent removes the harmful threaded bolts entirely from the clamp design. The clamping mechanism uses a cam-operated lever system with a smooth clamping surface that contacts the cable, extracting the source of mechanical damage (screw threads) while maintaining the cable retention function.
Solution Approach 2:
The patent introduces a smooth intermediate clamping surface between the cable and the external environment. This mediator surface, formed by the cam mechanism, prevents direct contact between the cable and any threaded or rough surfaces, thereby protecting the cable outer layer while still providing secure retention.
2Ease of operation
If bolts or studs are used to connect clamp halves, then the clamp securely retains the cable, but cable removal requires tooling and is difficult especially when wearing gloves
Solution Approach 1:
The clamp incorporates a self-retaining mechanism where the cam lever automatically maintains clamping pressure on the cable. The operator simply needs to release the lever to open the clamp and remove the cable, eliminating the need for tools or complex disassembly procedures while maintaining secure retention during operation.
Solution Approach 2:
The patent uses a dynamic cam mechanism that converts small movements of the lever into significant clamping force. This dynamic system allows the clamp to be easily opened and closed by hand operation while maintaining strong, secure clamping when engaged, providing both ease of operation and reliable retention.
3Adaptability or versatility
If the clamp uses a simple design, then it is lightweight and inexpensive, but it may not securely retain cables of various diameters
Solution Approach 1:
The clamp features a localized adjustable clamping zone where the cam mechanism applies focused pressure to the cable. By concentrating the clamping action at this specific location with a smooth contact surface, the design can securely hold cables of various diameters without requiring complex overall structure or multiple components.
Solution Approach 2:
The cam mechanism allows the clamping parameters (pressure and contact point) to be adjusted by the operator through lever movement. This enables the same simple clamp structure to adapt to different cable diameters by changing the engagement parameters, providing versatility without increasing device complexity.
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 effectively secures cables without compromising their integrity, reducing the risk of damage and short-circuits, and can be easily operated with one hand, even while wearing gloves, making it quick, lightweight, and cost-effective.
Implementation Method 1
a resilient tooth-like ratchet mechanism that securely connects clamp portions
Data Source
AI summary
A method and apparatus are disclosed for retaining at least one elongate object. The apparatus includes a first retaining member (702) comprising at least one female portion (712), a further retaining member (700) comprising at least one male portion (732) receivable in the at least one female portion, wherein the at least one male portion (732) comprises a first connecting region adapted to cooperate with a further connecting region and at least one securing element (785) slidable in a keyway (775) of the first retaining member (702) and engagable with said male portion (732) to securely connect the first and further retaining members and retain an elongate object therebetween.