Shutter Device with Direct-Drive Motor to Eliminate Wire Stretching
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Solution Overview
Problem
Existing shutter devices using wires for opening and closing vents suffer from durability issues due to repeated loading, leading to potential stretching and wear.
Innovation Solution
A shutter device design that utilizes a moving mechanism with a driving motor and advancing and retracting mechanism to move an opening and closing member, pressing against the vent's peripheral edge with an elastic body, eliminating the need for wires and enhancing durability and airtightness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a wire is used to open and close the shutter, then the device structure is simple, but the wire is likely to stretch due to repeated loading, reducing durability
Solution Approach 1:
The patent removes the wire component from the system entirely. Instead of using a wire to transmit force from the motor to the shutter, the invention directly connects the motor's output shaft to the opening and closing member through a moving mechanism, eliminating the wire and its associated durability problems from the device structure
Solution Approach 2:
The patent replaces the wire-based mechanical transmission system with a direct drive mechanism. The motor's output shaft is directly connected to the opening and closing member via a moving mechanism that includes advancing and retracting functionality, substituting the indirect wire transmission with a direct mechanical connection that eliminates stretching issues
2Reliability
If the opening and closing member presses against the vent peripheral edge with elastic body interposed, then airtightness is improved, but the moving mechanism complexity increases
Solution Approach 1:
The patent introduces an elastic body as an intermediary component between the opening and closing member and the vent peripheral edge. This elastic body serves as a mediator that enables effective sealing contact while accommodating minor position variations, achieving airtightness without requiring extremely precise positioning mechanisms
Solution Approach 2:
The patent incorporates an elastic body that provides dynamic sealing capability. The elastic nature of this component allows it to deform and adapt to slight variations in the opening and closing member position, maintaining consistent sealing pressure and airtightness throughout operation without requiring complex positioning 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
The solution improves durability and airtightness by eliminating the need for wires and ensuring a secure closure mechanism, while also allowing for effective ventilation control.
Implementation Method 1
elastic body located between the window member and the opening and closing member
Data Source
AI summary
Durability of a shutter device and a ventilation device is improved. Shutter device (1) includes window member (2) partially including vent (20), opening and closing member (3) that opens and closes vent (20), elastic body (4) located between window member (2) and opening and closing member 3, and moving mechanism (5) that moves opening and closing member (3) between a closed position where opening and closing member (3) closes vent (20) and open position where opening and closing member (3) opens vent (20). Moving mechanism (5) includes driving motor (6) that includes an output shaft connected to opening and closing member (3) and rotates opening and closing member (3), and an advancing and retracting mechanism that advances and retracts opening and closing member (3) with respect to window member (2). Moving mechanism (5) moves opening and closing member (3) in a manner that opening and closing member (3) at the closed position presses against a peripheral edge portion of vent (20) of window member (2) with elastic body (4) interposed between opening and closing member (3) and the peripheral edge portions to close vent (20). The ventilation device includes shutter device (1) and a blower that sends air to shutter device (1).