Lock Device With Asymmetric Stays And Slider Mechanism
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Solution Overview
Problem
Existing lock devices for storage devices, such as glove boxes, have a large thickness in the fore and aft direction, reducing storage space and requiring excessively large angular displacement to disengage the lock, due to the placement of stays on the front and rear sides of the plate.
Innovation Solution
A lock device design with a base attached to the lid, featuring a knob with an arm portion, a slider, and two rods that are slidably supported on the base, allowing for a power transmission mechanism that maximizes the displacement of the slider and rods with minimal fore and aft width, enabling efficient operation with reduced size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If stays are provided on the front and rear sides of the plate, then the lock device can be structurally stable, but the thickness of the lock device in the fore and aft direction becomes great
Solution Approach 1:
The patent repositions the stays from front and rear sides of the plate to the left and right sides of the plate. This spatial reconfiguration changes the dimension in which the stays are arranged, reducing the fore and aft thickness while maintaining structural stability through the same stay-plate connection mechanism.
Solution Approach 2:
The patent employs asymmetric positioning of the stays relative to the plate, placing them specifically on the left and right sides rather than symmetrically on front and rear sides. This asymmetric arrangement optimizes the spatial footprint in the fore and aft direction while preserving the mechanical stability provided by the stay-plate connection.
2Device complexity
If the distance between the rotational center line of the knob and the plate is small, then the lock device structure is compact, but the stroke of the plate and rods becomes too small requiring unacceptably great angular displacement of the knob
Solution Approach 1:
The patent introduces a slider that can move between a retracted position and a protruding position, creating a dynamic adjustment mechanism. By dynamically changing the distance between the knob's rotational center line and the plate based on operational needs, the system achieves both structural compactness and ease of operation without requiring excessive angular displacement.
Data Source
AI summary
A lock device includes a base attached to a lid, a knob having a grip portion movably supported on a front side of the base and an arm portion projecting rearward with respect to the grip portion, a slider slidably supported in a rear part of the base so as to move slidingly by being pushed by the arm portion in response to a movement of the knob, a first rod and a second rod slidably supported by a part of the base located in front of the slider in a vertically arranged manner so as to be engaged by and disengaged from a pair of corresponding engaging holes, and a power transmission mechanism provided between the slider and the first rod and the second rod so that the first rod and the second rod are slidingly moved in response to a movement of the slider.