Locking Assembly With Feeler-Activated Anti-Misoperation Braking
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing locking assemblies with intuitive control handles and anti-misoperation devices fail to maintain the locking rod in the unlocked position due to manipulation hardness, wear, or malfunctions, leading to potential damage and ineffective locking in the closed position.
Innovation Solution
A locking assembly with an anti-false operation device that includes a feeler, return means, braking means, and actuating means, which activate braking configuration upon opening, ensuring the locking rod remains in the unlocked position until the opening is closed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the control handle has a small angular travel (intuitive type), then the ease of operation is improved, but the reliability of the anti-misoperation device deteriorates because the minimum unlocking stroke is insufficient to activate the device
Solution Approach 1:
A feeler element is introduced as an intermediary between the locking rod and the anti-misoperation device. The feeler extends beyond the locking rod and directly activates the anti-misoperation device, decoupling the activation mechanism from the locking rod's travel distance. This allows the anti-misoperation device to be reliably activated even when the locking rod has insufficient travel, thereby resolving the contradiction between intuitive handle operation and reliable anti-misoperation activation
Solution Approach 2:
The feeler element is positioned to extend beyond the locking rod in advance, so that when the locking rod moves during unlocking, the feeler is the first element to engage with and activate the anti-misoperation device. This preliminary positioning ensures that the anti-misoperation device is activated before the locking rod completes its travel, even with limited angular movement of the control handle
2Ease of manufacture
If the locking rod does not adopt the exact position necessary to activate the anti-misoperation device, then the ease of manufacture is improved (tolerance accumulation), but the reliability deteriorates because the device fails to prevent translation of the locking rod
Solution Approach 1:
The feeler serves as a mediator that transfers the movement of the locking rod to the anti-misoperation device with amplified effect. Even small movements of the locking rod cause the feeler to move sufficiently to activate the anti-misoperation device, eliminating the need for precise positioning of the locking rod and accommodating tolerance accumulation while maintaining reliable activation
Solution Approach 2:
The feeler changes the geometric parameters of the activation mechanism by extending beyond the locking rod at a specific angle and position. This parameter modification allows the anti-misoperation device to be activated by smaller displacements of the locking rod, thereby maintaining reliability while accommodating manufacturing tolerances
3Device complexity
If the locking rod fails to maintain the unlocked position, then the device complexity is reduced (simpler mechanism), but the harmful factors increase because the hooks may strike the strike plates and damage the locking assembly
Solution Approach 1:
The anti-misoperation device, activated by the feeler, applies a preliminary counteracting force to prevent the locking rod from translating back to the locked position when it should remain unlocked. This preliminary anti-action stops the locking rod before the hooks can strike the strike plates, preventing damage while maintaining a relatively simple mechanical structure
Solution Approach 2:
The feeler element, which could be seen as adding complexity, actually simplifies the overall system by providing a reliable activation mechanism that prevents harmful strikes. The feeler's extension creates a mechanical advantage that ensures the anti-misoperation device activates reliably, converting the potential harm of hook-strike contact into a beneficial preventive action
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The invention relates to a locking assembly (4) for a closing installation (1) of an opening of a building, this locking assembly (4) comprises a locking system (5) with at least one movable locking rod (51), an anti-misoperation device (7) for slowing the passage of the locking rod (51) from its unlocking position to its locking position.This anti-misoperation device (7) comprises: - a sensor (8) movable between a deployed position and a retracted position; - means (9) for returning the sensor (8) from its retracted position to its deployed position; - means (10) for braking the passage of the locking rod (51) from its unlocking position to its locking position; - means (11) for actuating the braking means (10) to make them adopt an active braking configuration under the effect of the passage of the sensor (8) from the retracted position to the deployed position.