Sliding Door Limiter Assembly for Controlled Ventilation Opening
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Solution Overview
Problem
Existing sliding window or door mechanisms lack the ability to control the opening beyond two positions (open or closed) and often require additional components or mechanisms to achieve limited opening, which can compromise aesthetics and functionality.
Innovation Solution
A limiter assembly that integrates with the sliding door or window, allowing for three positions: closed, limited opening, and fully open, using an articulated arm and strike system to control the leaf's movement relative to the frame, compatible with conventional closure mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional closure mechanisms are used, then the leaf can be opened or closed, but the leaf cannot be opened to a limited position for ventilation
Solution Approach 1:
The articulated arm transitions from a static blocking mechanism to a dynamic linkage that actively guides the leaf through a controlled opening path. The arm rotates about a fixed point and guides the follower along a curved trajectory, enabling the leaf to open to a predetermined limited position while maintaining mechanical linkage throughout the motion sequence.
Solution Approach 2:
The articulated arm acts as an intermediary mechanical element between the leaf and the blocking member. Instead of directly blocking the leaf, the arm transmits and controls the motion, guiding the follower through a specific path that achieves both the limited opening position and the subsequent closing action.
2Reliability
If a blocking mechanism is used to prevent full opening, then safety is improved, but the leaf cannot be closed without operating the blocking mechanism again
Solution Approach 1:
The articulated arm maintains continuous mechanical linkage with the leaf throughout the entire operation cycle. As the leaf opens to the limited position, the arm rotates and guides the follower. When closing, the same arm continuously guides the follower back along the curved path, ensuring the leaf returns to the closed position without requiring separate blocking/unblocking operations.
Solution Approach 2:
The articulated arm is pre-configured with a specific geometry and rotation radius that automatically guides the follower through the correct motion path. The arm's initial position and dimensions are designed to ensure that when the leaf opens, the follower naturally follows the curved trajectory to the limited position and back, eliminating the need for additional operational steps.
3Adaptability or versatility
If the blocking mechanism is independent from the closure mechanism, then blocking function is added, but the device complexity increases
Solution Approach 1:
The blocking function and closure function are merged into a single integrated mechanism. The articulated arm serves dual purposes: it blocks the leaf from opening beyond the limited position while simultaneously guiding the follower to ensure proper closing. This eliminates the need for separate independent blocking and closure mechanisms, reducing overall device complexity.
Solution Approach 2:
The articulated arm performs multiple functions within a single component: it acts as a blocking member to prevent excessive opening, serves as a guiding mechanism for the follower, and enables the closing operation. This multi-functionality reduces the number of separate components needed and simplifies the overall mechanism.
Data Source
Figure 1
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AI summary
The invention describes a limiter assembly for limiting the opening of the leaf (2) of a sliding door or window, for the installation thereof between the leaf (2) and the fixed frame (4) where it is installed, wherein the limiter assembly (1) comprises a movable flat (7) which can slide along the leaf (2) through the action of an actuator (8), a strike (11) fixed to the edge of the frame (4), and an arm (16) with an end joined to the movable flat (7), going through the edge of the leaf (2), and the other end of which can slide along a channel (12) of the strike (11).