Microswitch Adapter for Control and Signalling Travel Mismatch
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Solution Overview
Problem
Existing command and signaling devices, such as those from the RMQ-Titan series, are limited in their ability to combine actuating elements with contact elements like microswitches due to mismatched switching travel and force requirements, necessitating design modifications for compatibility.
Innovation Solution
A command and signaling device with a cylindrically shaped base body and a multi-part insert element that includes an elastic element to support the actuating element, allowing for a predetermined force range and adjustable switching travel, enabling the use of microswitches as contact elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional actuating element is combined with a microswitch, then the switching travel and contact pressure requirements are mismatched, but this limits compatibility with standard actuating elements like those from RMQ-Titan series
Solution Approach 1:
The patent introduces an intermediary mechanism consisting of a lever arm and spring assembly that mediates between the actuating element and microswitch. This intermediary translates the actuating element's movement into appropriate microswitch actuation while adapting the force and travel characteristics, enabling compatibility between standard actuating elements and microswitches without requiring design modifications to either component.
Solution Approach 2:
The patent changes the mechanical parameters (force and travel) through the spring-loaded lever arm mechanism. The spring constant and lever arm geometry are selected to transform the actuating element's output characteristics into the microswitch's required input characteristics, resolving the parameter mismatch between conventional actuating elements and microswitches.
2Length of moving object
If the switching travel is shortened to match microswitch requirements, then compatibility with microswitches is improved, but the contact pressure on the microswitch increases beyond acceptable limits
Solution Approach 1:
The patent uses a spring-loaded lever arm that provides a counterbalancing force to offset the excessive contact pressure. The spring is pre-loaded to provide an upward force on the lever arm, which counteracts the downward force transmitted from the actuating element, thereby reducing the contact pressure on the microswitch to acceptable levels while maintaining the shortened switching travel.
Solution Approach 2:
The patent introduces dynamic force adjustment through the spring mechanism. The spring constant and pre-load can be selected to dynamically adjust the force transmission characteristics, allowing the system to maintain appropriate contact pressure across different operating conditions while preserving the shortened switching travel required for microswitch compatibility.
3Force
If the contact pressure is reduced to match microswitch specifications, then microswitch compatibility is improved, but the switching travel becomes too long for standard actuating elements
Solution Approach 1:
The patent uses a lever arm mechanism that provides mechanical advantage through its geometry. By selecting appropriate lever arm lengths and pivot point positions, the system amplifies the actuating element's movement while reducing the force transmitted to the microswitch, thereby achieving both reduced contact pressure and maintained switching travel within acceptable ranges.
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 the use of microswitches with reduced contact pressure by shortening the switching travel and adjusting the pressure force, facilitating modular compatibility with various contact elements.
Implementation Method 1
a multi-part insert element which is designed for insertion into the base body to bridge at least part of a switching path from the switching part to a contact element arranged at the other of the open ends and has an elastic element which elastically supports a part of the insert element provided for actuating the contact element in such a way that a compressive force of the insert element on the contact element is limited to a predetermined force range
Data Source
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AI summary
The invention describes a control and signalling device (10) which comprises the following: a cylindrical main body (12) with two open ends, an operating element (14) which is designed for insertion into one of the open ends of the main body and has a switching part (16) that is moveable relative to the main body, and a multipartite insert element (20, 22) which is designed for insertion into the main body (12) for bypassing at least one portion (240) of a switching path (24) from the switching part (16) to a contact element (18) arranged at the other of the open ends and has an elastic element (26) which elastically supports a portion (22), provided for operating the contact element (18), of the insert element in such a way that a pressure force of the insert element (22) onto the contact element (18) is limited to a prespecified force range.