Display Support Locking Linkage to Prevent Jamming
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Solution Overview
Problem
Existing supporting structures for displays face operational inconveniences due to excessive tension spring torque and potential jamming issues, making it difficult to lock and unlock the arms, particularly in devices like ultrasonic devices.
Innovation Solution
A supporting structure with a buffer linkage that allows for a buffer stroke and a main traction stroke, enabling smooth transitions between locked and unlocked states by using a buffer linkage with pivotally connected links and a pin set, reducing the need for excessive force and preventing jamming.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a tension spring with over-point biasing effect is used to lock the lifting arm and extension arm, then the locking reliability is improved, but the torque becomes excessively large making it difficult for users to operate with one hand
Solution Approach 1:
The locking mechanism is segmented into two independent locking members (first locking member for the lifting arm, second locking member for the extension arm) instead of using a single integrated locking mechanism. This segmentation allows each locking member to be operated independently, reducing the force required for each individual locking action while maintaining overall locking reliability.
Solution Approach 2:
A short link is introduced as an intermediary component between the locking mechanism and the arms. This short link acts as a force transmission mediator that reduces the torque requirement on the tension spring while still achieving effective locking, thereby improving ease of operation without sacrificing locking reliability.
2Ease of manufacture
If the pivot member of the knob and the locking member are connected via a short link, then the locking mechanism can function, but a dead point may be caused leading to jamming
Solution Approach 1:
Instead of connecting the pivot member and locking member directly or through a traditional linkage, the invention inverts the connection approach by using the short link to connect the locking member to the arm structure. This inverted connection geometry eliminates the dead point problem by ensuring that the force transmission path never becomes perpendicular to the motion direction, thereby preventing jamming while maintaining manufacturing simplicity.
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
Facilitates easy and convenient operation by allowing the structure to smoothly switch between locked and unlocked states without excessive force, reducing the risk of jamming and improving user experience.
Implementation Method 1
The buffer linkage is pivotally connected to the first locking member in conjunction, and capable of changing between a first state and a second state, and performs a buffer stroke and a main traction stroke when changing between the first state and the second state
Data Source
AI summary
A supporting structure includes a base, first and second arms, an operating member, first and second locking members, a rotating base, a bearing rack. One end of the first arm is rotatably provided at the base with a first longitudinal axis. The operating member is penetratingly disposed through the first arm and changed between locking/release positions. The first locking member is disposed in the first arm and changed between first outermost/innermost positions, with one end fixed to and acting synchronously with the operating member. The second locking member is disposed in the first arm. The rotating base is rotatably disposed at the other end of the first arm with a second longitudinal axis. One end of the second arm is rotatably connected to the rotating base with a horizontal axis. The bearing rack is connected to the other end of the second arm and includes a fixed frame.