Passive Door Lock Mechanical Release Mechanism
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Solution Overview
Problem
Conventional passive wing locks with integrated electric door openers face design limitations due to the need for a mechanical unlocking device to engage with the armature of the electric locking device, restricting arrangement and design options.
Innovation Solution
The mechanical unlocking device interacts with the electrically switchable actuator, shifting it out of the locking element's reach, allowing the door opener latch to be mechanically switched to a release position, with options including a movably mounted unlocking slide or lever, and the door opener latch designed as a swivel or linear sliding latch, interacting with upper or lower locking bar connection devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the mechanical release mechanism engages with the armature of the electric locking device, then mechanical unlocking is achieved, but design freedom and arrangement options are restricted
Solution Approach 1:
The patent introduces a mechanical release mechanism that acts as an intermediary between the locking rod connection device and the door opener latch. This release mechanism includes a release lever or release slide that can be actuated by the locking rod connection device to mechanically switch the door opener latch into the release position, without requiring direct engagement with the electric locking device's armature.
Solution Approach 2:
The patent segments the unlocking function into separate components: the mechanical release mechanism (release lever/slide) and the door opener latch are designed as independent elements that interact through a defined interface. This segmentation allows each component to be optimized independently and arranged with greater flexibility within the lock case.
2Ease of manufacture
If the door opener unit is installed in a separate recess in the lock mechanism, then the electric door opener is integrated, but the arrangement options are limited
Solution Approach 1:
The mechanical release mechanism is designed with universal applicability, where the release lever or release slide can be actuated by either the upper locking rod connection device or the lower locking rod connection device. This multi-functionality allows the same release mechanism design to work with different locking rod configurations, enhancing arrangement flexibility.
3Reliability
If the mechanical release mechanism is designed to engage the armature directly, then unlocking is achieved, but the mechanism complexity increases
Solution Approach 1:
Instead of having the mechanical release mechanism engage with the electric locking device's armature (traditional approach), the patent inverts the approach by having the mechanical release mechanism interact with the door opener latch directly. The locking rod connection device actuates the release mechanism, which then disengages the door opener latch from the latch bolt, achieving unlocking through this inverted mechanical pathway.
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
This configuration provides greater design freedom and functional reliability by allowing the door opener latch to be released mechanically or electrically, with the gear element disengaging from the latch in the release position, enhancing the locking mechanism's operational flexibility.
Implementation Method 1
The electric actuator can be designed as an electric coil, and the output-side locking element as an armature, e.g., a pivoting armature.
Data Source
Figure 1a~1b
Figure 2~4
Figure 3s~4s
AI summary
A passive door lock is described, comprising a lock case containing the lock mechanism and door opener. A mechanical release (54) is provided, which interacts via an intermediate element (55) with the transmission slide (53) located between the door opener latch (51) and the output-side armature (52a) of the electric locking device (52). The mechanical release acts on the intermediate element (55) to mechanically release the electric door opener, and not on the armature (52a) of the locking device (52).