Reclining Table Back Rest Support With Low X-Ray Interference
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Solution Overview
Problem
Existing reclining tables for patient examination are complex and heavy due to the need to support significant forces on pivot shafts and pins, making them cumbersome and unsuitable for applications where minimizing radiation interference is crucial, such as X-ray examinations.
Innovation Solution
A reclining table design featuring a pivotally connected supporting member that can fold down onto the reclining plate and a separate supporting plate that can pivot against the back rest, allowing for adjustable angular positions while minimizing structural complexity and radiation interference, using lateral slots and lips for cooperation between components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a robust pivot shaft with gear wheels and spring-biased pins is used to support the back rest, then the back rest can be supported in multiple angular positions, but the structure becomes heavy and complicated
Solution Approach 1:
The supporting function is divided into two separate components: a supporting member pivotally connected to the reclining plate, and a supporting plate connected to the back rest. Each component has simplified means for supporting the back rest in angular positions, eliminating the need for a single complex pivot shaft assembly with gear wheels and multiple pins.
Solution Approach 2:
The invention extracts the supporting function from a single complex pivot shaft and distributes it across two simpler components. The supporting member and supporting plate each have their own simplified means (such as pins or lugs) that can be independently designed and manufactured, reducing overall structural complexity.
2Adaptability or versatility
If the supporting member is made longer to support greater angles, then the back rest can achieve larger angular positions, but the structure interferes more with radiation during X-ray examinations
Solution Approach 1:
The supporting function across a wide angular range is segmented between two components: the supporting member handles smaller angles and can be folded down to minimize radiation interference, while the supporting plate handles larger angles. This segmentation allows each component to be optimized for its specific angular range without requiring one long component that would always interfere with radiation.
Solution Approach 2:
The supporting member is designed to be dynamically foldable onto the reclining plate when not in use, allowing it to be positioned out of the radiation path during X-ray examinations. This dynamic repositioning capability enables the system to adapt to different operational requirements without permanent structural interference.
Data Source
AI summary
A reclining table comprising a stationary reclining plate and a back rest pivotally connected to it. A supporting member pivotally connected to said reclining plate near its free end serves for supporting said back rest in various angular positions. Said supporting member has a number of lateral slots for receiving lips of a supporting plate being pivotally connected to said back rest and in that case engaging said back rest. The supporting member is able to support the back rest at an angle of 15° at the most, for example. Beyond that, said supporting plate can be used, which will then cooperate with grooves provided on the reclining plate for supporting the back rest at angles larger than the maximum angle first mentioned. Supporting member and supporting plate are collapsed onto the reclining plate when said back rest is to be brought to the horizontal position.