Spring-Loaded Probe Holder for Single-Handed Force Adjustment

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Solution Overview

Problem

Conventional holding structures require two hands to secure and adjust the holding force on objects, making it cumbersome to hold objects of different dimensions and weights, especially in environments like calibration baths where single-handed operation is desirable.

Innovation Solution

A holder system with a movable clip attached to a tube, where the clip's aperture size is adjustable using a spring mechanism, allowing single-handed operation and variable holding force adjustment by changing the number of turns of a helical coil spring, enabling secure positioning of measurement probes in calibration instruments.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a conventional holder with a fastener is used to hold objects of different dimensions and weights, then the holding force can be adjusted, but two hands are required for operation (one to secure the holder and another to twist the fastener)

Engineering Contradiction:
Improvesingle-handed operationVSAvoidholder structure
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The patent combines the functions of securing the holder and adjusting the holding force into a single operational action. The spring mechanism is integrated with the holder body such that one hand can simultaneously perform both tasks by simply releasing the object, eliminating the need for separate fastener adjustment with the other hand.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The spring mechanism automatically adjusts the holding force based on the object's weight and dimensions. When the object is placed in the holder, the spring compresses to provide appropriate holding force without requiring manual intervention for adjustment, enabling single-handed operation.

Inventive Principle:
Principle #25Self-service

2Adaptability or versatility

If the aperture size is fixed in the holder, then the structure is simple, but objects of different dimensions cannot be held

Engineering Contradiction:
Improveaccommodation of different object dimensionsVSAvoidadjustable aperture mechanism
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The holder features a dynamic aperture that can change size to accommodate different object dimensions. The movable clip or adjustable walls allow the aperture to expand or contract based on the object being held, providing versatility while maintaining a relatively simple overall structure.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The holder is designed with universal adaptability through its adjustable aperture mechanism, allowing it to hold various objects of different dimensions and weights using the same basic structure, thereby achieving multi-functionality without significant complexity increase.

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Force

If the holding force is increased to secure heavier objects, then the holding capability improves, but the mechanism becomes more complex requiring separate adjustment of holding force

Engineering Contradiction:
Improveholding forceVSAvoidadjustment operation
Core Design Contradiction:
ForceVSEase of operation

Solution Approach 1:

The spring mechanism allows the holding force parameter to be automatically adjusted based on the object's weight. By changing the spring compression or selecting different spring constants, the holder can adapt to different weight classes without requiring complex manual adjustment mechanisms, maintaining ease of operation.

Inventive Principle:
Principle #35Parameter changes

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

Enables secure, single-handed adjustment and holding of objects with varying dimensions and weights, improving operational efficiency in environments like calibration baths by allowing precise control of the holding force without requiring additional hands.

Implementation Method 1

a spring inside the tube, the spring force of which on the movable clip is adjustable to hold the object within the aperture of the movable clip

Methodology Applied
Scientific EffectSpring force: Spring

Implementation Method 2

The spring may be a helical coil that is coupled to the movable clip by a first retainer and is coupled to the cap by a second retainer

Methodology Applied
Scientific EffectHelical coil spring mechanism: Spring

Data Source

PatentUS20240392912A1Holder and method for holding an object
Publication Date: 2024.11.28 FLUKE CORP
  • US20240392912A1 patent drawing
  • US20240392912A1 patent drawing
  • US20240392912A1 patent drawing

AI summary

A holder secured to a vertical column by a cross support holds an object in a fixed position. The holder includes a tube that can be secured to the cross support. A movable clip at a first end of the tube is configured to hold the object, e.g., a probe held in a calibration bath. The movable clip includes an aperture. When the movable clip is in an extended position, an object can be inserted into the aperture. When the movable clip moves toward a retracted position, the object is held within the aperture. A cap at the second end of the tube is coupled to the movable clip by a spring inside the tube. The movable clip exerts an adjustable holding force on the object by adjusting a number of turns of the spring between the cap and the movable clip. A central holding device may support multiple holders.