Toggle Bolt Cam Mechanism for Nut-Free Durable Fastening
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Solution Overview
Problem
Conventional toggle bolts have structural limitations, such as thin steel wire springs that are easily deformed, leading to reduced durability and binding force, which can result in safety issues.
Innovation Solution
A smart toggle bolt design that includes a bolt main body with a cylindrical upper and lower end portion, a toggle member that rotates eccentrically, and a housing that slides to alternately lock or unlock the toggle member, securing a bracket to a structure without the need for a separate nut.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional toggle bolts use thin steel wire springs to fold the wing parts, then the structure can be compact and easy to install, but the spring is easily deformed and durability is reduced
Solution Approach 1:
The patent removes the spring component from the toggle bolt structure entirely. Instead of using a spring to fold and unfold the wings, the invention uses a cam mechanism with an eccentric rotation shaft that mechanically forces the wings to fold and unfold through sliding and rotating movements, eliminating the reliability issues associated with spring deformation
Solution Approach 2:
The patent replaces the elastic mechanical system (spring) with a kinematic mechanical system (cam and follower mechanism). The eccentric rotation shaft acts as a cam that converts rotational motion into the sliding motion of the housing and the folding/unfolding motion of the wings, providing a more reliable mechanical alternative to spring-based elasticity
2Device complexity
If conventional toggle bolts rely on spring-based folding wings, then the structure is simple, but binding force is reduced resulting in safety problems
Solution Approach 1:
The patent introduces dynamic motion control through the cam mechanism. As the eccentric rotation shaft rotates, it dynamically controls the opening angle and spreading force of the wings through the sliding housing, allowing the binding force to be actively adjusted and maximized during installation rather than relying on passive spring tension
Solution Approach 2:
The cam mechanism performs preliminary action by pre-positioning the wings in the correct folding configuration before insertion, and then automatically executing the unfolding and spreading action as the rotation shaft turns, ensuring maximum binding force is achieved through controlled mechanical motion rather than relying on spring elasticity alone
3Device complexity
If conventional toggle bolts use spring-based wings, then the mechanism is compact, but a separate nut fastening process is required
Solution Approach 1:
The patent merges the fastening function into the toggle mechanism itself. The eccentric rotation shaft and cam mechanism integrate the wing folding/unfolding action with the fastening action, allowing the wings to securely engage the structure through their spreading motion without requiring a separate nut to be threaded and tightened, thus eliminating an additional installation step
Solution Approach 2:
The cam mechanism performs self-service by automatically controlling the wing spreading and locking actions through the rotation of the eccentric shaft. The housing slides along the bolt shaft and the wings automatically unfold and engage the structure, creating a self-actuating fastening system that eliminates the need for separate fastening components and operations
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 smart toggle bolt achieves firm fastening to structures without a separate nut, enhances ease of installation with simple toggle operation, and improves durability by reducing the reliance on thin steel wire springs.
Implementation Method 1
a rotation shaft, which is biased to one side based on a long axis of the bolt main body so as to be formed eccentrically, wherein according to sliding movement of the housing, the toggle member rotates eccentrically by the rotation shaft
Implementation Method 2
a spring, which elastically acts on the toggle member
Data Source
AI summary
Provided is a smart toggle bolt for fastening structures to each other in semiconductors or display processing lines, including a bolt main body, which is inserted into through holes formed in a structure and a bracket and has a thread formed in a longitudinal direction, a height adjustment bolt, which is formed with a thread in a longitudinal direction of a body, adjusts height by being threaded to the inside of the bolt main body, and has an adjustment pin insertion groove formed in the longitudinal direction on one side, a toggle member, which is coupled to the bolt main body and rotates around a rotation shaft, and an unlocking adjustment pin, which is inserted along the adjustment pin insertion groove of the height adjustment bolt and rotates the toggle member so that the toggle member axially rotates around the rotation shaft to unlock the bracket from the structure.