Pivoting Table Locking Layout to Prevent Crushing and Deep Reach
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Solution Overview
Problem
Existing pivotable tables face challenges with locking devices that increase table dimensions and pose user safety risks due to deep reach requirements and potential crushing hazards during actuation.
Innovation Solution
The longitudinal extent of the guide is inclined relative to the table top, with the locking cam on the support frame and displacement bolt on the plate carrier, allowing for user-friendly actuation and reduced risk of injury, while using the plate carrier as a guide for the displacement bolt and incorporating a spring for vibration absorption and a leverage mechanism for ease of use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the displacement bolt is fastened to the support frame, then secure fixation of the tabletop is achieved, but the table dimensions increase
Solution Approach 1:
The patent inverts the conventional arrangement by fastening the displacement bolt to the movable plate carrier instead of the stationary support frame, and the locking cam to the support frame instead of the plate carrier. This inversion allows the locking mechanism to be actuated from above the tabletop rather than from below, reducing table dimensions while maintaining fixation security.
2Reliability
If the displacement bolt is arranged on the support frame, then reliable locking is achieved, but deep reach under the tabletop is required
Solution Approach 1:
By inverting the positions of the displacement bolt and locking cam, the actuation point moves from below the tabletop to above it. This makes the locking device easily accessible to users without requiring deep reach under the tabletop, significantly improving ease of operation while maintaining locking reliability.
3Reliability
If the sliding bolt is actuated on the support frame side, then locking function is achieved, but crushing risk to operating personnel occurs
Solution Approach 1:
The inversion of the locking mechanism positions the actuation point above the tabletop,远离 the support frame area. This eliminates the crushing risk to operating personnel that would occur if the displacement bolt were actuated near the support frame during tabletop movement.
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
This design results in a compact, user-friendly, and safe locking system that prevents unintentional unlocking and reduces the risk of injury, maintaining structural simplicity and legroom while ensuring secure fixation of the table top.
Implementation Method 1
If a spring of the locking device keeps the displacement bolt spring-loaded in its locking position of the guide, any vibrations of the table can be absorbed in order to counteract an unintentional opening of the locking device.
Implementation Method 2
A leverage effect can thus be used, for example, in order to reduce the expenditure of force for the movement of the displacement bolt.
Data Source
Figure 1~3
Figure 2
Figure 4~5
AI summary
The table has a support frame (1), and a pivoting tabletop (2), which is positioned deviating around a rotary axis (3) provided between the support frame and a tabletop support (9). A locking device (6) is provided, which has a shunting latch (8) interacting with a locking cam (7) to fix the tabletop opposite the support frame in a rotating position. The locking cam is attached to the support frame and the shunting latch is attached to the tabletop support, and the tabletop support forms a guiding for the shunting latch for a simple construction ratios.