Electromechanical Lock Core Recess Assembly
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Solution Overview
Problem
Existing electromechanical lock devices face challenges in assembly complexity and security due to limited space in the cylinder core and the weakening of the latching mechanism when the actuator and side bar are not properly secured.
Innovation Solution
A lock device design featuring a bore parallel to the core's longitudinal direction and a latching element in a slit between the bore and the barrel surface, allowing for easier assembly and enhanced security by distributing forces through the core itself.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the latching mechanism is entirely included in the cylinder core, then flexibility is improved and the same lock cylinder housing can be used, but the space in the cylinder core becomes limited and assembly becomes difficult
Solution Approach 1:
The latching mechanism is segmented into modular components: the actuator assembly (with motor and side bar) is separately manufactured and then inserted into a recess in the core through a cover. This segmentation allows each component to be assembled and tested independently, simplifying the overall assembly process while maintaining the compact integrated design.
Solution Approach 2:
The actuator assembly is nested within the core structure. The side bar is positioned in a longitudinal hole, the actuator is placed in a recess, and the cover encloses these components within the core's external dimensions. This nesting approach maximizes space utilization while keeping the overall device compact and maintaining flexibility.
2Ease of manufacture
If a hole is drilled in the inner end surface of the core for the latching mechanism, then assembly is simplified, but the placement of other parts such as the follower coupling is limited
Solution Approach 1:
Instead of drilling a hole through the end surface of the core, the latching mechanism is positioned in a recess on the barrel surface (side surface) of the core. This dimensional change from end-surface to side-surface placement allows the longitudinal hole to extend parallel to the core axis without interfering with end-surface couplings, thus maintaining part placement flexibility while simplifying assembly.
3Ease of manufacture
If the latching mechanism is provided in a recess in the barrel surface of the core, then assembly is simplified, but a cover must be provided which weakens the latching mechanism under large turning forces
Solution Approach 1:
The cover is merged with the core structure through integral formation or secure attachment, creating a unified load-bearing assembly. The cover and core together form a reinforced structure that can withstand large turning forces, eliminating the weakness of a separate, potentially yielding cover component.
Solution Approach 2:
The cover and core are constructed from materials with complementary properties, or as a composite structure, to enhance the overall strength and rigidity of the latching mechanism assembly, enabling it to resist large turning forces while maintaining the simplified recess-based assembly design.
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 design improves security by distributing forces through the core and simplifies assembly by providing a flexible solution that maintains structural integrity under turning forces.
Implementation Method 1
an actuator (30) which can be rotated by means of an electric motor (40)
Data Source
Figure 1~2b
Figure 3a~4
Figure 5~6c
AI summary
A lock device comprises a housing (2) which includes an opening (4) and a core (10) which is rotatably mounted in the opening (4) about a longitudinal axis of the core and which includes a key way (12) for reception of a key. A latching element (20) co-acts between the housing (2) and the core (10). An electronically controllable actuator (30) is mounted in the core (10) and which is movable by means of a motor (40) between an opening-registering position in which movement of the latching element (20) to the release position is permitted, and a latching position in which movement of the latching element (20) to the release position is blocked. The motor (40) is provided in a recess (10a) in the barrel surface (10b) of the core at a distance from the end surfaces of the core. Because the recess turns into a bore (10c) having a cross-section that essentially correspond to the cross-section of the actuator and which extends parallel to the longitudinal axis of the core and in which the actuator (30) is provided; and that the latching element (20) is provided in a slit (10d) provided between the bore and the barrel surface of the core, the advantage is achieved that forces on the latching element are taken up by the core itself, which improves the security. The provision of the recess at a distance from the end surfaces of the core gives at the same time a flexible solution as regards assembly. A method of assembling the lock device is also described.