Integrated Door Lock Driver with Separate Actuation Paths
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Solution Overview
Problem
Conventional interior door locks that can only be locked on one side require separate bolt mechanisms and rosettes, making them aesthetically unsuitable and requiring additional installation space, material, and complexity.
Innovation Solution
Integration of the locking device into the driver device, allowing for separate actuation paths for the outside and inside handles, eliminating the need for a separate bolt and enabling a single door rosette on each side, with the locking device being actuated manually without a key.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional lock with separate bolt mechanism is used, then security function is achieved, but device complexity and installation space increase
Solution Approach 1:
The patent combines the bolt mechanism and latch mechanism into a single integrated locking device. The bolt (16) and latch (4) are actuated by the same driver device (13) through separate but integrated actuation paths, eliminating the need for separate control mechanisms and reducing overall structural complexity while maintaining both security functions
Solution Approach 2:
The driver device (13) is designed to perform multiple functions: it actuates both the bolt (16) for secure locking and the latch (4) for door closing through its two connections (14, 15). This multi-functional design eliminates the need for separate actuation mechanisms, reducing device complexity while maintaining security
2Reliability
If a separate bolt mechanism is used, then locking function is achieved, but weight and material usage increase
Solution Approach 1:
The bolt (16) and latch (4) are combined into a single integrated locking device actuated by one driver device (13), reducing the total amount of material and weight compared to separate mechanisms while maintaining both locking functions
3Ease of operation
If separate rosettes are provided for driver device and locking device, then functionality is maintained, but aesthetic appearance deteriorates
Solution Approach 1:
The driver device (13) and locking device (16) are positioned and integrated such that they can be covered by a single door rosette from the outside, while maintaining separate actuation paths for functional independence. This integration improves aesthetic appearance by eliminating the need for multiple visible covers
4Adaptability or versatility
If separate actuation paths are implemented, then functional independence is achieved, but device complexity increases
Solution Approach 1:
The driver device (13) is segmented into two independent connections: external connection (14) for the outside handle and internal connection (15) for the inside handle. Each connection has its own actuation path that can be independently controlled, allowing functional independence while using a unified driver device structure
Data Source
Figure 1
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Figure 4
AI summary
The present invention relates to a lock (2) for an interior door (1) of a building which can only be locked on one side, comprising a carrier (12) for mounting on or in the interior door (1), a latch (4) arranged on the carrier (12) which is adjustable between a closed position and an open position, a drive device (13) arranged on the carrier (12) for actuating the latch (4) which has an external connection (14) for connecting the drive device (13) to an external handle (7) and an internal connection (15) for connecting the drive device (13) to an internal handle (6), and a locking device (16) which is adjustable between an unlocked state and a locked state by means of a bolt element (17).Improved functionality is achieved if the drive mechanism (13) has an external path (18) leading from the external connection (14) to the latch (4), via which the latch (4) can be adjusted to the open position by means of the external connection (14), wherein the locking device (16) interrupts the external path (18) in the locked state, so that the latch (4) cannot be actuated via the external path (18) by means of the external connection (14). The latch (4) can be actuated at least in the unlocked state via an internal path (19) by means of the internal connection (15).