Handle Device Coupling Mechanism for High Torque Transmission
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Solution Overview
Problem
Existing handle devices for doors, windows, and gates lack the ability to selectively disengage and couple rotatable elements efficiently, particularly in terms of sustaining high torques, having small dimensions, low energy consumption, high safety, and simple electrical control while preventing unauthorized manipulation.
Innovation Solution
A handle device with a coupling mechanism featuring pivotally mounted engaging members that allow for selective engagement and disengagement between rotatable and stationary elements, enabling high torque transmission with reduced wear and energy consumption, and incorporating a linear actuator for efficient operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional coupling mechanisms are used to selectively engage and disengage rotatable elements, then the device can achieve basic coupling functionality, but the device complexity increases and reliability decreases due to multiple moving parts and potential jamming
Solution Approach 1:
The coupling mechanism is divided into separate functional elements: a first coupling member on the rotatable element, a second coupling member on the stationary element, and a movable engaging member that selectively engages both. This segmentation allows each component to have a simple, dedicated function, reducing overall complexity while maintaining reliability through modular design.
Solution Approach 2:
The engaging member is extracted as a separate movable component that can be independently actuated to control the coupling state. By taking out the engagement control function from the main coupling structure, the design simplifies the interaction between rotatable and stationary elements while improving reliability through clear separation of coupling and control functions.
2Duration of action of moving object
If friction-based coupling mechanisms are used to prevent relative rotation, then coupling can be achieved, but wear increases and duration of action decreases
Solution Approach 1:
The engaging member acts as an intermediary element that positively engages with both the first and second coupling members through interlocking features. This mediator transfers rotational motion without relying on friction between the primary coupling surfaces, significantly reducing wear and extending the duration of action while maintaining secure coupling.
3Productivity
If manual operation is used to achieve disengagement and coupling, then operation is simple, but productivity is low and time consumption is high
Solution Approach 1:
The manual mechanical operation for coupling and disengagement is replaced with an actuator-driven system. The actuator automatically actuates the engaging member to move between engagement and disengagement positions, dramatically increasing productivity and reducing time consumption while maintaining ease of operation through automated control.
Solution Approach 2:
The coupling mechanism incorporates dynamic elements including the movable engaging member that can quickly transition between engagement and disengagement states, and the actuator that provides controlled motion. This dynamic design enables rapid coupling operations while maintaining simplicity through automated actuation rather than complex manual procedures.
4Force
If high torque transmission is required between coupled elements, then force increases, but device complexity and risk of malfunction increase
Solution Approach 1:
The coupling members are designed with nested geometric features including recesses, protrusions, and interlocking surfaces that naturally handle high torque loads. The first coupling member on the rotatable element and the second coupling member on the stationary element are nested together through the engaging member, creating a compact torque transmission path that handles high forces without requiring additional complex torque-specific components.
Data Source
AI summary
Handle device for operating doors, windows and the like. The handle device comprises a first element (3, 103), which is rotatable about an axis of rotation, a second element (8, 108), and a coupling device (10, 110) which is arranged to selectively allow and prevent relative rotation about the axis of rotation between the first and the second element. The coupling device comprises a first coupling member (11, 111) which is connected to or forming an integral part of the first element. A second coupling member (12) is connected to or forming an integral part of the second element (112). At least one engaging member (13, 13, 113, 114) is movable between an engagement position in which it simultaneously engages the first and the second coupling members to thereby prevent relative rotation between the first and second element and a release position in which it is disengaged from at least one of the first and second coupling members to thereby allow relative rotation between the first and second element. An actuator (22, 122) is arranged to move the engaging member between the engagement position and the release position. The engaging member (13, 14, 113, 114) is pivotally mounted to the first coupling member (11,111) and arranged to pivotally move between the engagement position and the release position.