Rotary Knob Control Device with Elastic Locking Mechanism
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing control devices for machine tools and similar equipment often require operators to move away from the machine to activate or deactivate power, leading to accidental shutdowns and violating safety regulations due to the decentralized positioning of the control device, which can result in mechanical and electrical issues.
Innovation Solution
A control device with a rotary knob mechanism that allows for voluntary activation and deactivation while maintaining operator surveillance, featuring a snap-fit coupling base body, elastic arms for locking and releasing the knob's rotation, and an integrated selector member to prevent accidental power interruption, allowing the operator to control the device without leaving the machine.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the control device is positioned away from the machine control panel, then the activation and deactivation can only be intentionally performed, but the operator must move from the control panel towards the control device, leaving the machine without human surveillance
Solution Approach 1:
The patent combines the control device with the machine control panel by integrating it into the same housing structure. The control device is positioned on the control panel housing, allowing the operator to access both the control panel and the control device simultaneously without moving away from the machine, thus maintaining visual surveillance while ensuring intentional operation.
2Ease of operation
If the control device is integrated close to the machine, then the operator can maintain visual surveillance, but the activation and deactivation device might be accidentally manipulated
Solution Approach 1:
The patent employs a rotary knob with dynamic locking and unlocking mechanisms. The knob can be rotated between different positions (first position for activation, second position for deactivation) and is secured by locking means that prevent accidental rotation. The locking means include elastic arms with lugs that engage with corresponding features on the control panel, providing a secure yet operable connection.
Solution Approach 2:
The patent introduces an intermediary locking mechanism between the rotary knob and the control panel. This locking mechanism includes elastic arms with lugs that engage with corresponding features, acting as a mediator that prevents accidental manipulation while allowing intentional operation. The locking means provide a mechanical barrier that must be deliberately overcome to change the control device position.
3Ease of operation
If a rotary knob mechanism is used for activation and deactivation, then the control function is achieved, but the component parts are subject to severe regulations and cannot be modified
Solution Approach 1:
The patent segments the control device into modular components: a housing, a control panel with opening, a rotary knob, and separate locking means. This segmentation allows the locking means to be designed as independent elements that can be adapted to different regulatory requirements while maintaining the core rotary knob control function. The modular design enables customization without compromising the essential control mechanism.
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 safe and intentional operation of machine tools by preventing accidental shutdowns, maintaining operator surveillance, and simplifying manufacturing and integration with existing control devices, thereby enhancing operational reliability and compliance with safety regulations.
Implementation Method 1
elastic arms for locking and releasing the knob's rotation
Data Source
Figure 1~3
Figure 2
Figure 4
AI summary
A control device (1) for controlling the operation of a mechanic, electric, pneumatic, hydraulic/oleodynamic, or similar user comprising a basic body (2) in the middle of which a rotating shaft (10) torsionally coupled with a rotating knob (19) which rotates on said basic body (2) is installed, such shaft (10) being functionally connected to electric connectors suitable for supplying electric power to said user when the knob (19) is in a first operating position on said body and for interrupting said supplying of electric power when the knob is in a second operating position on said body. The knob (19) supports a selector member (40) for selecting the movement of the knob (19) on said basic body (2), said selector member (40) being torsionally integral with the knob (19), but rather being movable orthogonally to it, said selector member (40) comprising interception means (42) suitable for cooperating with counter-interception means (35) provided in said basic body (2), the cooperation between such interception means and counter-interception means (42, 35) preventing the rotation of the knob (19) placed on said basic body (2), the separation of such interception means and counter-interception means (42, 35) making it possible the knob (19) to rotate from the first operating position towards the second operating position and vice-versa.