Adjustment device that controls a tilting angle of a table top
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Solution Overview
Problem
Existing table top adjustment devices are complex, inconvenient to use, and result in uneven surfaces and limited angle adjustment precision, posing safety risks and stability issues during transportation and installation.
Innovation Solution
A simple adjustment device with a shell, tilting piece, gear, position limiting piece, and driving piece, controlled by a control string for smooth angle adjustment, combined with a pneumatic cylinder for height adjustment and omnidirectional wheels for mobility, providing a stable and secure tilting mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a ratchet tooth connector with multiple locking spaces is used to achieve angle adjustment, then the tilting angle can be adjusted to different positions, but the operation becomes inconvenient and complex requiring repeated manual actuation
Solution Approach 1:
The patent extracts the complex multi-position locking mechanism from the adjustment device and replaces it with a simple binary locking system. The position limiting piece has only one locking space that engages with a single ratchet tooth on the driving piece, eliminating the need for repeated manual actuation between multiple locking spaces while still providing effective angle adjustment and locking capability.
Solution Approach 2:
Instead of having the connector move between multiple fixed locking spaces as in prior art, the patent inverts the approach by having the position limiting piece engage with a single ratchet tooth that prevents reverse motion. The adjustment is achieved by moving the driving piece forward to different positions, and locking occurs automatically when the ratchet tooth engages the locking space, reversing the traditional locking mechanism logic.
2Adaptability or versatility
If the supporting seat and supporting rod are made longer to extend the adjustment range, then the tilting angle range increases, but the stability of the table top deteriorates
Solution Approach 1:
The patent segments the adjustment function into two independent parts: the driving piece handles the tilting angle adjustment through linear movement, while the position limiting piece provides stable locking at the desired position. This segmentation allows the supporting structures to be optimized for stability rather than extended for range, as the adjustment range is achieved through the driving piece's movement rather than longer supporting elements.
Solution Approach 2:
The patent introduces a dynamic adjustment mechanism where the driving piece can move freely in the forward direction to achieve different angles, while the position limiting piece provides static locking in the reverse direction. This dynamic design allows for extended adjustment range without compromising stability, as the stable locking is provided by the engagement mechanism rather than the length of supporting components.
3Measurement precision
If the number of ratchet teeth on the ratchet tooth racks is increased to improve adjustment fineness, then the adjustment precision improves, but the device complexity and installation difficulty increase
Solution Approach 1:
The patent extracts the fineness requirement from the ratchet tooth rack design and transfers it to the driving piece's linear movement mechanism. Instead of relying on multiple ratchet teeth for precision, the system achieves fine adjustment through the precise positioning capability of the driving piece moving along its guide, combined with the single-point locking action of the position limiting piece. This reduces the number of ratchet teeth needed while maintaining or improving adjustment fineness.
Solution Approach 2:
The patent introduces the driving piece as an intermediary element between the user's adjustment action and the final table top position. The driving piece's linear movement serves as a mediator that translates simple forward motion into precise angular adjustment, while the position limiting piece acts as another intermediary that provides clean locking without requiring complex multi-tooth engagement. This intermediary mechanism simplifies the overall system while improving precision.
4Stability of the object's composition
If symmetric angle adjustment devices are used on both sides to achieve balanced adjustment, then the tilting symmetry improves, but the installation becomes very inconvenient and may result in uneven plane surface
Solution Approach 1:
The patent employs asymmetric design in the engagement mechanism where the position limiting piece engages with the ratchet tooth in a unidirectional manner. This asymmetric locking mechanism allows for simple installation on one side while inherently providing stable support, eliminating the need for symmetric dual-sided installation. The asymmetric design simplifies installation while maintaining table top symmetry through the balanced mechanical advantage of the single-sided engagement system.
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
Enables quick, precise, and safe adjustment of the table top angle with improved stability and ease of use, preventing injuries and ensuring a smooth, stable surface.
Implementation Method 1
the gear is fixedly connected to a side portion of the tilting piece, and is rotatable synchronously with the tilting piece
Implementation Method 2
combined with a pneumatic cylinder for height adjustment
Data Source
AI summary
An adjustment device, having a tilting piece at a top front portion of a shell and rotates about a top front edge of the shell; a gear is at one side of the shell and fixedly connected to one side of the tilting piece, and is rotatable synchronously with the tilting piece; a position limiting piece is provided at a rear side of the gear, and is capable of engaging with the gear; a driving piece is provided in an inclined manner inside the shell; the driving piece and the position limiting piece are connected through a driving rod that passes through an inner side wall of the shell and drives the position limiting piece to move; a far end of the driving piece is connected with one end of a control string; another end of the control string is extended out of the shell to be pulled or released.