Rotary Clamping Part for Sensor Mounting
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Solution Overview
Problem
Existing magnetic field sensor mounting methods suffer from inaccuracies due to mechanical tolerances and mechanical stress, leading to potential damage and reduced functional accuracy.
Innovation Solution
A device featuring a rotatable clamping part with structured surfaces for secure attachment to the sensor, allowing for partial form-fitting engagement within the fastening groove, minimizing mechanical stress on the sensor and ensuring secure positioning without damage, even under extreme conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a locking screw is used to secure the sensor in the guide groove, then the sensor can be held in a desired position, but the mechanical stress can lead to bending or damage to the magnetic field sensor
Solution Approach 1:
The invention extracts the harmful locking function from the sensor itself by introducing a separate clamping device with a clamping part that can be rotated independently. This allows the sensor to be secured without direct mechanical stress on the sensor body, as the clamping part absorbs all mounting forces.
Solution Approach 2:
The clamping part serves as an intermediary between the sensor and the guide groove. It transfers the clamping forces to the guide groove surfaces while preventing these forces from being transmitted to the sensor, thus protecting the sensor from mechanical damage.
2Reliability
If the sensor is mechanically locked using a locking screw, then the sensor position can be fixed, but the air gap changes due to mechanical tolerances leading to magnetic field changes and reduced functional accuracy
Solution Approach 1:
The invention replaces the traditional screw-based mechanical locking system with a rotary clamping mechanism that applies distributed clamping forces through friction. This substitution eliminates the need for high-point mechanical contact that causes air gap variations, thereby maintaining magnetic field stability and sensor accuracy.
Solution Approach 2:
The clamping part is designed with specific geometric parameters (radius, width, surface structure) that enable it to engage with the guide groove surfaces through friction and form-fit connections. By optimizing these parameters, the system achieves secure positioning without excessive clamping force that would deform the sensor or alter air gaps.
3Reliability
If a structured surface is added to the clamping part for form-fitting connection, then the connection becomes more secure under vibrations, but the device complexity increases
Solution Approach 1:
The structured surface (knurling, teeth, or ribs) is applied only to the clamping surfaces of the clamping part that contact the guide groove, rather than the entire component. This localized application provides enhanced friction and form-fit connection where needed while keeping the overall device complexity low and manufacturing feasible.
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 solution provides a secure, accurate, and durable attachment of sensors across various groove sizes, reducing the risk of unintentional release and maintaining precision under vibrations and shock, while avoiding mechanical stress on the sensor.
Implementation Method 1
the inner surface of the groove is slightly deformed by the structure on the clamping part and the structured surface thus engages with the inner surface of the fastening groove
Implementation Method 2
a partially form-fitting connection is formed between the clamping surfaces and the inner surfaces
Implementation Method 3
the clamping forces, which are caused by the twisting of the clamping part
Implementation Method 4
the teeth cut into the material of the side walls of the fastening groove when the clamping part is rotated
Implementation Method 5
the teeth are aligned opposite to the direction of rotation, the teeth engage in the material of the fastening groove accordingly
Data Source
Figure 1~2
Figure 3~7
AI summary
The clamping surfaces (9) are structured to form a partially-interlocking connection between themselves (9) and inner surfaces (10) of the fastening-groove (4). The clamping surfaces are serrated or toothed. The teeth act against a direction of rotation, to jam the clamping section (6) into the groove. The surface is knurled. The serrations lie parallel to the axis of rotation. The clamping section is a die-casting. It is non-magnetic, being made especially of stainless steel.