Interlock Switch Mechanism Stroke Extension for Door Control Accuracy
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Solution Overview
Problem
Conventional interlock switch mechanisms have low switch control accuracy, particularly when doors are opened by a small angle, resulting in the switch remaining in a turn-on state.
Innovation Solution
The interlock switch mechanism incorporates a stroke extension mechanism that converts a first external force into a second stroke normal to the first, with a greater magnitude, ensuring accurate actuation of the switch, utilizing a combination of link rods, action parts, and guide units to enhance control precision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a conventional interlock switch mechanism is used, then the structure is simple, but the switch control accuracy is low
Solution Approach 1:
The interlock switch mechanism is divided into multiple functional components: a first link rod for initial movement, a second link rod for force transmission, a rotation part for directional conversion, and guide units for precision control. Each segment performs a specific function to collectively achieve accurate switch control while maintaining reasonable structural complexity
Solution Approach 2:
The rotation part converts linear movement into rotational movement, and the second link rod converts it back to linear movement in a different direction. This dimensional transformation amplifies the stroke and improves control accuracy without proportionally increasing structural complexity
2Measurement precision
If the stroke extension mechanism is added, then the switch control accuracy is improved, but the device complexity increases
Solution Approach 1:
The second link rod acts as an intermediary that transmits and amplifies the movement from the first link rod to the action part. The rotation part serves as another intermediary that converts movement directions. These intermediaries enable stroke extension and improved accuracy while keeping each individual component relatively simple
Solution Approach 2:
The mechanism uses dynamic movement of multiple link rods and rotation parts to achieve stroke extension. The guide units provide dynamic guidance to ensure precise movement paths. This dynamic approach allows the system to achieve high control accuracy without requiring overly complex static structures
3Ease of operation
If the first door is opened by a small angle, then the door operation is flexible, but the switch cannot be effectively turned off
Solution Approach 1:
The stroke extension mechanism is designed to accumulate movement from small door openings. Even when the door is opened by a small angle, the first link rod's movement is amplified through the second link rod and rotation part to generate sufficient stroke to reliably actuate the switch and turn it off
Solution Approach 2:
The mechanism combines multiple components with different functional properties: link rods for movement transmission, rotation part for directional conversion, and guide units for precision control. This composite structure ensures that small input movements are reliably transformed into sufficient output stroke for dependable switch control
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 design significantly improves switch control accuracy and stability, ensuring the switch is effectively turned off even when doors are opened slightly, by extending the stroke and using guide units to maintain alignment and prevent loosening.
Implementation Method 1
The spring 206 may cause the first link rod 201 to return to an initial position (i.e., a position where a switch 202 is turned off)
Implementation Method 2
a coil spring 204C for causing the rotation part 204 to return to the initial position
Implementation Method 3
the first movable part 300 overcomes an elastic force of the coil spring 204C so as to push the contacting portion 204A2 of the rotation part 204
Implementation Method 4
the second movable part 301 overcomes an elastic force of the spring 206 so as to push the action part 205
Data Source
AI summary
Disclosed are an interlock switch mechanism and an image formation device. The interlock switch mechanism comprising a main body; a first link rod which is disposed on the main body, and may swing by centering on a supporting point, wherein, a supporting shaft is disposed at one end of the first link rod; a second link rod which is supported by the supporting shaft, wherein, two ends of the second link rod may swing by centering on the supporting shaft; an action part which, under a second force, may touch one end of the second link rod so as to cause another end of the second link rod to swing toward an actuator; and a stroke extension mechanism which, under a first force, may cause the first link rod to swing so as to cause the other end of the second link rod to swing toward the actuator.