Rotary Arm Reset Mechanism That Prevents Spring Wear
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Solution Overview
Problem
Existing rotating components connected directly to springs wear out due to contact during rotation, leading to reduced spring force and system failure.
Innovation Solution
A rotation auxiliary mechanism with an elastic assembly on both sides of a rotary arm, where the elastic member is compressed by a movable member to retain and reset the arm, avoiding direct contact with the spring, using inclined surfaces to prevent wear.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the rotary arm is directly connected to the spring, then the structure is simple, but the spring contacts with other components during rotation causing wear and failure
Solution Approach 1:
A movable member is introduced as an intermediary between the rotary arm and the elastic member. The movable member slides along the groove and transmits force from the elastic member to the rotary arm, preventing direct contact between the spring and other components during rotation, thus reducing wear and extending service life
Solution Approach 2:
The force transmission path is segmented into distinct components: the elastic member generates elastic force, the movable member transmits this force through sliding motion along a groove, and the rotary arm performs the rotational function. This segmentation allows each component to perform its specific function without direct contact between the elastic member and rotary arm
2Stability of the object's composition
If the elastic member is used to retain and reset the rotary arm, then force balance is achieved, but the elastic member may contact with the rotary arm causing wear
Solution Approach 1:
The movable member is designed to dynamically adjust its position along the groove as the rotary arm oscillates. During oscillation, the movable member slides to different positions, allowing the elastic member to remain separated from the rotary arm while still providing the necessary retaining force and enabling the rotary arm to reset to its initial position
Solution Approach 2:
The movable member acts as a mediator that transmits the elastic force to the rotary arm without requiring direct contact between the elastic member and rotary arm. This intermediary mechanism maintains force balance while preventing wear on the elastic member
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
The mechanism effectively maintains force balance and extends the service life of the spring by preventing contact between the rotary arm and the elastic member, reducing wear and improving system reliability.
Implementation Method 1
an elastic member 31 and a movable member 32 connected to one end of the elastic member 31, the other end of the elastic member 31 being fixed, an end of the movable member 32 away from the elastic member 31 abutting against the rotary arm 2, when the rotary arm 2 oscillates, the elastic member 31 can be compressed by the movable member 32 to retain the rotary arm 2
Data Source
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AI summary
The present application relates to a rotation auxiliary mechanism and a fastening device. The rotation auxiliary mechanism includes: a mounting base (1) being movably connected with a rotary arm (2); an elastic assembly (3) arranged on both sides of the rotary arm and including an elastic member (31) and a movable member (32) connected to one end of the elastic member (31), the other end of the elastic member (31) being fixed, an end of the movable member (32) away from the elastic member (31) abutting against the rotary arm (2), when the rotary arm oscillates, the elastic member (31) can be compressed by the movable member (32) to retain the rotary arm (2), and when an external force applied to the rotary arm (2) is removed, the elastic member (31) drives the rotary arm (2) oscillating to a predetermined position to reset. The elastic assembly of the present application can interact with the rotary arm, and can effectively avoid the contact of the rotary arm (2) with the elastic member (31) during the oscillation of the rotary arm (2), which prevents the elastic member (31) from wear, and improves the service life of the elastic member (31) and the product.