X-ray Diaphragm Mechanism Linkage Interference
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Solution Overview
Problem
In X-ray diaphragm mechanisms with two shielding plates that cross each other at different levels, interference occurs, preventing the realization of arbitrary slit widths due to the interference between the plates and links in the movable region.
Innovation Solution
The X-ray diaphragm mechanism is designed with sufficient distance between the X-ray shielding plates and links to prevent interference, allowing for arbitrary slit width adjustments by rotating the links driven by a motor, ensuring the plates do not interfere at any slit width.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If two X-ray shielding plates are mounted to cross each other with a difference in level, then the structure can achieve slit width adjustment, but the shielding plates interfere with each other in the movable region preventing arbitrary slit width realization
Solution Approach 1:
The patent introduces a height difference (z-dimension) between the two X-ray shielding plates, mounting them at different vertical levels. This spatial separation in the height dimension allows the plates to cross each other without interfering in the movable region, enabling arbitrary slit width adjustment from 0 to maximum width without mechanical interference between the plates and connecting links.
2Volume of moving object
If the connecting portions are positioned closer to the X-ray shielding materials to reduce device size, then the device becomes more compact, but interference occurs in the movable region limiting slit width adjustment
Solution Approach 1:
By mounting the two X-ray shielding plates at different heights (z-dimension separation), the patent allows the connecting portions to be positioned closer to the shielding materials without causing interference in the movable region. This vertical separation enables both compact device size and full slit width adjustment range to be achieved simultaneously.
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 enables the realization of arbitrary slit widths without interference between X-ray shielding plates in the movable region, improving the accuracy and range of slit width adjustments and reducing the volume and weight of the shielding materials.
Implementation Method 1
a driving side link 25b that is fixed to a rotary shaft 23 of a motor 24 and is driven to rotate by the motor 24... When the driving side link 25b starts to be rotated from the state of (a) by the motor 24, the driving side link 25b starts counterclockwise rotation (left rotation) in FIG. 11, and the X-ray shielding materials 21a and 21b are brought close to each other.
Implementation Method 2
two X-ray shielding materials 21a and 21b... One-side ends (in FIG. 11, left sides) of the X-ray shielding materials 21a and 21b are connected to the driving side link portion 25b through connecting portions 22a and 22b, respectively.
Data Source
AI summary
The present invention includes: X-ray shielding materials; X-ray shielding material mounting plates to which the X-ray shielding portions are fixed; a driven side link and a driving side link that connect the two X-ray shielding material mounting plates to each other so that the X-ray shielding portions face each other and cross each other; connecting portions that connect each of the X-ray shielding material mounting plates to the driven side link and the driving side link; and a driving device that drives the driving side link so as to rotate. Connecting portions and are provided at positions not interfering with a movable region of the X-ray shielding material mounting plates formed in conjunction with the rotational driving of the driven side link and the driving side link. The X-ray shielding material mounting plates are moved by the rotational driving of the driving side link and accordingly, the slit width between the X-ray shielding materials is changed.