Anti-Rotation Ring Structure for Vibration-Safe Thread Release
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Solution Overview
Problem
The existing rotation preventing ring-shaped members are difficult to remove from their annular recesses due to their elastic modulus, making it challenging to rotate the forward end cylindrical member for releasing threaded engagement without disengagement from the chisel body, especially under violent vibrations.
Innovation Solution
A rotation preventing ring-shaped member with a ring-shaped body circumferentially attached to the joint, featuring a first locking portion, a second locking portion, and a release portion, allowing the second element to be rotated in the threaded engagement releasing direction by curving the ring-shaped body and disengaging the second locking portion without detaching from the first element.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the rotation preventing ring-shaped member is made with sufficient elastic modulus to be reliably held in the annular recess, then the reliability of preventing rotation is improved, but the ease of removal deteriorates
Solution Approach 1:
The rotation preventing ring-shaped member is divided into multiple independent locking portions (first locking portion and second locking portion) that can be selectively engaged or disengaged. This segmentation allows the release portion to disengage only the second locking portion while maintaining the first locking portion's engagement, enabling controlled removal without compromising overall structural reliability.
Solution Approach 2:
The ring-shaped member incorporates a release portion that can dynamically change the engagement state of the locking portions. When the release portion is pushed, it causes the ring-shaped body to curve and raise, selectively disengaging the second locking portion from the second locking recess while maintaining the first locking portion's engagement, thus enabling controlled rotation and removal.
2Ease of operation
If the forward end cylindrical member is allowed to rotate for releasing threaded engagement, then the ease of disassembly is improved, but the risk of unintended disengagement due to vibration worsens
Solution Approach 1:
The ring-shaped member is pre-installed with locking portions that engage both the first element and second element, creating a preliminary locked state that prevents rotation. The first locking portion engages the first locking recess to anchor the ring, while the second locking portion engages the second locking recess to prevent the second element from rotating, thus preventing unintended disengagement due to vibration.
Solution Approach 2:
The ring-shaped member acts as an intermediary device between the first element and second element. It mediates the rotational constraint by providing locking portions that engage both elements, preventing direct relative rotation while allowing controlled disassembly when the release portion is actuated.
3Reliability
If a conventional rotation preventing ring-shaped member is used, then the prevention of relative rotation is achieved, but the complexity of removal procedure increases
Solution Approach 1:
The release portion is extracted as a distinct functional element from the ring-shaped body, allowing it to be independently actuated. When the release portion is pushed, it selectively disengages the second locking portion from the second locking recess, enabling the second element to rotate and be removed without requiring removal of the entire ring-shaped member, thus simplifying the removal procedure.
Solution Approach 2:
The ring-shaped member is designed with dynamic engagement characteristics where the release portion can selectively disengage the second locking portion while maintaining the first locking portion's engagement. This dynamic capability allows controlled rotation and removal of the second element without compromising the overall structural integrity, simplifying the removal procedure.
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 the rotation of the second element in the threaded engagement releasing direction without disengagement from the chisel body, maintaining the ring-shaped member's attachment and preventing relative rotation, thus addressing the issue of loosening due to vibrations.
Implementation Method 1
the ring-shaped body is curved between the release portion and the first locking portion so as to be raised from the outer peripheral surface of the first element, thereby causing the second locking portion to disengage from the second element
Data Source
Figure 1
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AI summary
[Technical Problem] Provided is a rotation preventing ring-shaped member preventing a second element threadedly joined to a first element from being rotated in a threaded engagement releasing direction. [Solution to Problem] The rotation preventing ring-shaped member has a ring-shaped body 32 circumferentially disposed around the outer peripheral surface of a forward end of the first element (cylindrical chisel body) 26 at the threaded joint, a first locking portion 34 provided at one end of the ring-shaped body, a release portion 36 provided at the other end of the ring-shaped body, and a second locking portion 38 provided at a position intermediate between the first locking portion and the release portion. The first locking portion locks the ring-shaped body to the first element circumferentially, and the second locking portion engages the second element (forward end cylindrical member) 24 to prevent rotation of the second element in a threaded engagement releasing direction. By displacing the release portion in a direction extending toward the above-described one end along the ring-shaped body, the ring-shaped body is caused to curve radially outward, thereby disengaging the second locking portion from the second element and thus allowing rotation of the second element in the threaded engagement releasing direction.