Door Opener Locking Anchor Prevents Shaking
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Solution Overview
Problem
Existing door openers are prone to unlocking due to wind loads or shaking, leading to structural complexity and increased costs in solutions like ball catches and leaf springs, which can jam or fail to maintain the locking position effectively.
Innovation Solution
An electric door opener design featuring a locking armature with a circular surface that prevents movement by the locking lever, combined with a prestressed mounting and optional electromagnet, ensures the locking anchor remains in the blocking position without additional parts, reducing energy requirements and operational complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a ball catch is used to fix the swivel latch, then the locking position is secured, but the device complexity increases and more opening energy is required
Solution Approach 1:
The invention extracts the essential function of preventing lateral movement from the complex ball catch mechanism and implements it through a simplified lateral extension design that only provides the necessary constraint without the additional complexity of a full ball catch system
Solution Approach 2:
Instead of using a complex ball catch, the invention creates a simplified copy of the lateral constraint function through the lateral extension geometry, achieving the same stabilizing effect with a much simpler structure
2Reliability
If a leaf spring is used to prevent locking anchor movement, then the blocking position is maintained, but the device complexity increases and operational reliability decreases due to potential jamming
Solution Approach 1:
The invention extracts the essential function of maintaining the blocking position from the leaf spring mechanism and implements it through a rigid lateral extension with precise geometric positioning, eliminating the need for elastic components while maintaining the same functional outcome
Solution Approach 2:
The invention creates a simplified copy of the position-maintaining function through the lateral extension's geometric configuration, achieving reliable blocking position maintenance without the complexity and potential failure modes of a leaf spring system
3Reliability
If the locking anchor pivot axis is moved to the side of the locking lever, then shaking resistance is improved, but the device complexity increases due to specially supported return spring
Solution Approach 1:
The invention extracts the shaking resistance function from the relocated pivot axis configuration and achieves it through the lateral extension's geometric constraint, eliminating the need for specially supported return springs while maintaining resistance to shaking-induced unlocking
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 effectively prevents unlocking due to shaking while maintaining operational safety and reducing energy consumption, allowing for a simpler and cost-effective design that does not compromise the door opener's functionality.
Implementation Method 1
the door opener has an electromagnet which is set up to move the locking armature in the direction of the release position or in a direction opposite thereto in an electromagnetic manner when it is actuated
Data Source
Figure 1a
Figure 1b
Figure 1c~2
AI summary
The opener (1) has a swivel case (20) pivotably supported between locking and unlocking positions. A locking lever (30) is rotatably supported on the case around an axis (34). A stop anchor (40) is rotatably supported on the lever around another axis (44). The anchor inhibits rotation of the lever from the locking position towards the unlocking position. An electromagnet moves the anchor towards releasing position and/or in opposite direction, where the opener inhibits changing of blocking position of the anchor during rotation of the lever from the locking position towards the case.