Adjustable Cam Locking Assembly for Precise Crack Placement
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Solution Overview
Problem
Existing cam locking devices using steel cables or Dyneema webbing for rigidity face issues with precise placement in cracks due to length discrepancies and complex assembly, leading to reduced lifespan and difficulty in repair.
Innovation Solution
A cam locking device with a length-adjustable rod and blocker mechanism that ensures rigidity perpendicular to the axis, allowing for precise placement and easier assembly and repair by adjusting the rod's length to match the wire element's length.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a steel cable or Dyneema webbing is used to connect the head to the annular end, then the device can be assembled, but the placement precision in cracks is reduced due to length discrepancies and the assembly becomes complex
Solution Approach 1:
The patent changes the physical state of the connection from a flexible cable/webbing to a rigid rod with adjustable length. The rod's length can be modified to precisely match the distance between the head and annular end, eliminating placement precision issues while simplifying assembly through direct rigid connection.
Solution Approach 2:
The rod is designed with adjustable length capability, allowing it to adapt to different crack dimensions. This dynamic adjustment feature enables precise placement in various crack configurations while maintaining a simple rigid rod structure rather than complex flexible cable arrangements.
2Adaptability or versatility
If the rod length is fixed, then the assembly is simple, but the device cannot adapt to different crack sizes and placement precision is reduced
Solution Approach 1:
The rod incorporates an adjustment mechanism that allows its length to be modified. This dynamic feature enables the same rod structure to adapt to different crack sizes and distances between mounting points, providing versatility without requiring multiple fixed-length rod components.
Solution Approach 2:
The rod can be divided into adjustable segments or sections that can be extended or retracted. This segmentation allows the rod to achieve different lengths as needed, adapting to various crack configurations while maintaining a relatively simple overall structure compared to flexible cable systems.
3Measurement precision
If the wire element is made taut to ensure rigidity, then placement precision improves, but the rod must be precisely length-matched which complicates assembly and repair
Solution Approach 1:
Instead of relying on tensioning a flexible wire element to achieve rigidity, the patent uses a rigid rod whose length is the adjustable parameter. By directly adjusting the rod length to match the required distance, the system achieves both rigidity and precision without the complexity of precise tensioning and length-matching operations.
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 device provides improved rigidity and precision in crack placement, simplifies assembly, and facilitates repairs by allowing for easy adjustment and replacement of components.
Implementation Method 1
a spring (11) coupled to the at least one cam (3) to urge the at least one cam (3) towards the extended position
Implementation Method 2
extend the rod to apply a tensile force and stretch the wire element and apply a compressive force on the rod
Implementation Method 3
apply a compressive force on the rod
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
A cam locking device comprises a head (1) with a cam (3) pivotally mounted about a pivot shaft (4) between retracted and extended positions. An annular end (2) is mechanically coupled to the head (1). A variable-length rod (8) connects the head (1) to an annular end (2) designed to receive a carabiner. A textile wire element (5) passes through the rod to connect the head (1) and the annular end (2). A trigger (7) is slidably mounted to selectively engage the retracted position of the cam (3). A rod length adjustment device (8) defines at least one distance between the head (1) and the annular end (2) that is greater than a threshold distance for extending the wire element (5) and compressing the rod (8) in the first direction (XX).