Coaxial Guide Mandrel for Reliable Retainer Release
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing devices for holding back and releasing elements in free gauges face issues such as jamming, complex mechanics, and the need for customized retention elements, which can lead to unreliable and error-prone releases, especially due to the interaction between retention elements and the release mechanism.
Innovation Solution
A device with a coaxial guide for the separation element, which actively relocates retention elements using a spring or magnetic force, preventing unintentional blocking and ensuring reliable release by maintaining the same force effect on all retention elements, and featuring a separation cap to shield the release path and prevent loose components from interfering.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the retaining elements are moved into designated recesses in the housing to release the element, then the element can be released, but the retaining elements may jam and cause improper release
Solution Approach 1:
A separation element is introduced as an intermediary component between the retaining elements and the element to be released. This separation element actively drives the retaining elements apart transversely to the release direction, preventing them from blocking the release path while ensuring reliable release without jamming
2Force
If a sufficiently high tensile force is applied by the element to be released, then the retaining elements can be moved into their release position, but the retaining elements must be designed differently depending on the expected load
Solution Approach 1:
The separation element acts as a force-generating intermediary that actively pushes the retaining elements apart using spring force or magnetic repulsion. This eliminates the need for high tensile forces from the element to be released and allows uniform design across different load requirements
Solution Approach 2:
The passive mechanical system relying on tensile force from the element is replaced with an active separation element using spring force or magnetic repulsion. This substitution enables consistent design regardless of the element's load or material properties
3Reliability
If the separation element is positioned against the retaining elements to actively drive them apart, then release is improved, but the separation element may penetrate the release path and impair proper release
Solution Approach 1:
The separation element is guided along a guide pin that is coaxial to the release direction, constraining its movement to a specific path. This dimensional constraint ensures the separation element drives the retaining elements apart effectively while preventing penetration into the release path
4Reliability
If additional retaining elements are moved in the release direction to achieve position change, then release is achieved, but the complex mechanism becomes prone to failure
Solution Approach 1:
The complex multi-element mechanism is simplified by extracting the essential function: a single separation element on a guide pin that actively drives the retaining elements apart. This reduction in complexity eliminates multiple moving parts and potential failure points while maintaining reliable release function
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
Ensures reliable and reproducible release of elements without influencing their translational movement, preventing jamming and ensuring error-free operation regardless of the element's load or material properties, while also providing a robust and compact design for longevity and ease of assembly.
Implementation Method 1
The force exerted by the separation element can be generated by a spring, for example a compression spring, which is pretensioned in the retaining position and permanently exerts a force on the retaining elements in the release direction
Implementation Method 2
Application via repelling magnets is also conceivable
Data Source
Figure 1
Figure 2
AI summary
A device for restraining and commanded release of an element (2) to be released in the release direction (1) is described, comprising at least two restraining elements (3) that are movable between a restraining position and a release position. The restraining elements (3) are held in the restraining position by a clamping element (6) encompassing them. A separation element (7) subjected to a force is positioned in the release direction against the restraining elements (3) to actively drive the restraining elements (3) apart transversely to the release direction (1). To enable reliable release of the element to be released, it is proposed that the separation element (7) be slidably arranged on a guide mandrel (10) mounted coaxially with respect to the release direction (1) and that the guide mandrel (10) has a stop surface (11) for restraining the separation element (7) in the release position.