Actuating Unit Manual Release Cam Mechanism
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Solution Overview
Problem
Existing actuating units in sheet metal machining, such as those used in motor vehicle bodywork manufacturing, face challenges in manual release functionality, requiring high forces and posing risks of blockage or damage due to complex torque requirements and lack of isolation from the external environment.
Innovation Solution
An actuating unit with an integrated manual release mechanism featuring a rotatable release device that imparts a substantially coaxial thrust to the control rod, reducing torque requirements and preventing damage by positioning the release device to act directly on the control rod within the housing body, ensuring complete isolation from external environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a lean and elongated tool is used to manually unlock the closing device through an opening in the housing wall, then access to the closing device is enabled, but high forces are required that are difficult to apply and complete isolation from the external environment is not preserved
Solution Approach 1:
A cam element is introduced as an intermediary mechanism between the external manual input and the internal closing device. The cam element converts rotational motion applied from outside the housing into axial thrust on the control rod, enabling manual release without requiring direct access to high-force components inside the housing.
Solution Approach 2:
The release mechanism transforms the problem from a linear force application (pushing on the control rod directly) to rotational motion (turning the cam element). This dimensional change from linear to rotational allows easier manual operation while achieving the same release function.
2Ease of operation
If a rotating element is used to control the closing device from outside the housing body, then manual operation is enabled, but high torque is required and blockage or breakage may occur when the closing device is not in the configuration of irreversibility
Solution Approach 1:
The cam element is designed with a specific geometric profile that provides mechanical advantage only in the local region where the closing device is in the configuration of irreversibility. The cam's shape ensures that rotational motion is converted to axial thrust only when needed, while preventing rotation when the closing device is in other positions.
Solution Approach 2:
The cam element's geometry is designed to prevent rotational motion unless the closing device is in the correct configuration. This preliminary anti-action blocks unwanted rotation that could cause blockage or breakage, while allowing rotation only when the closing device is ready to be released.
3Force
If the release device is positioned to impart coaxial thrust to the control rod, then torque requirements are reduced and damage risk is minimized, but the release device must be integrated inside the housing body
Solution Approach 1:
The cam element is integrated with the housing body structure, merging the release mechanism with the existing housing. This integration eliminates the need for separate external release components while maintaining the low-torque advantage of coaxial thrust application to the control rod.
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 enables a simple and reliable manual release without high torque demands, minimizing the risk of damage and maintaining the actuating unit's isolation, thus ensuring efficient operation even in the absence of electrical or pneumatic control.
Implementation Method 1
a release device (40) of the closing device (30) is housed inside the housing body (11) in a rotatable manner around a rotation axis B orthogonal to the actuator axis A, wherein the release device (40) is configured to impart a substantially coaxial thrust to the actuator axis A on the control rod (21)
Data Source
Figure 1
Figure 2~2a
Figure 3~4
AI summary
The present invention relates generally to an actuating unit of the articulated lever or cam type with manual release function comprising an actuating element (12) movable between a rest position and a working position; a housing body (11) inside which a closing device (30) is housed, the closing device being configured to move the actuating element (12) between the rest position and the working position, wherein the closing device (30) comprises a mechanism of irreversibility of movement configured to trigger when the actuating element (12) reaches the working position; a linear actuator (20) provided with an axial control rod (21) movable along an actuator axis (A) in such a way as to move an ending (21a) of the control rod (21) connected to the closing device (30) between a first end position and a second end operating position and through which the linear actuator (20) acts on the closing device (30) to move it between an opening condition in which the actuator element (12) is in the rest position and a closing condition in which the actuator element (12) is in the working position; and a release device (40) of the closing device (30) housed inside the housing body (11) rotatably around a rotation axis (B) orthogonal to the actuator axis (A) and characterized in that the release device (40) of the closing device (30) is configured to impart a substantially coaxial thrust to the actuator axis (A) on the control rod (21).