Segmented Engagement Unit for Threaded Bolt Torque Transfer
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Solution Overview
Problem
Existing engagement units for threaded bolts require high push-on force and are not easily reusable or low-wear in the process of tightening and dismantling.
Innovation Solution
The engagement unit consists of an inner and outer part that can be slid onto each other, with spring arms on the inner part blocked radially to transmit high torque, allowing for low push-on force attachment and easy reuse by releasing latching hooks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the engagement unit uses spring arms with locking means for engagement with a threaded bolt, then the unit can be pushed onto the bolt, but high push-on force is required and the unit is not easily reusable
Solution Approach 1:
The engagement unit is divided into two separable parts: an inner part with spring arms and locking means, and an outer part with attachment head. This segmentation allows the inner part to be pushed onto the threaded bolt with low force while the outer part provides torque transmission, enabling easy reusability without compromising engagement reliability.
Solution Approach 2:
The inner part acts as an intermediary between the threaded bolt and the outer part. It receives the bolt first with minimal force, then transfers torque to the outer part through torque receiving means, solving both the low push-on force requirement and the torque transmission need.
2Power
If the engagement unit transmits high torque for tightening, then the tightening function is effective, but the unit suffers from wear and is difficult to dismantle
Solution Approach 1:
By separating the torque transmission function (outer part) from the engagement function (inner part), the design allows the outer part to be easily removed after tightening, reducing wear on the inner part and enabling easy dismantling and reuse.
Solution Approach 2:
The outer part can be discarded (removed) after the tightening operation is complete, while the inner part remains on the bolt. This allows recovery of the inner part for reuse without the wear accumulated on the outer part, facilitating easy dismantling and reuse.
3Reliability
If the spring arms are blocked radially to transmit high torque, then torque transmission is reliable, but the structure becomes more complex
Solution Approach 1:
The blocking mechanism is implemented through the interaction between the inner part's spring arm receptacles and the outer part's spring arms. This segmented approach provides reliable radial blocking for torque transmission while keeping each component's structure relatively simple and modular.
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 reliable attachment with low initial force, efficient torque transfer for tightening, and low-wear, easy dismantling, making the unit reusable.
Implementation Method 1
the spring arms formed on the inner part are blocked from deflecting radially outwards
Implementation Method 2
The spring arms are formed on the inner part and, in a final assembly arrangement of the outer part pushed onto the inner part, are blocked against movement radially outwards by spring arm receptacles of the outer part
Implementation Method 3
there is a latching arrangement formed on the inner part and on the outer part, which irreleasably fixes the outer part in a final assembly arrangement pushed onto the inner part in the axial direction on the inner part counter to the pushing-on direction
Implementation Method 4
torque receiving means are formed on the inner part and on the outer part, which are in engagement with each other in the final assembly arrangement of the outer part pushed onto the inner part for non-rotatably connecting the outer part to the inner part
Data Source
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AI summary
The invention relates to an engagement unit for attaching and engaging a threaded bolt (33) having an inner part (1) and an outer part (2) that can be slid onto the inner part (1). Torque supporting means (8, 9, 23, 24) are formed on the inner part (1) and the outer part (2), in order to transfer a torque applied to the outer part (2) to the inner part (1). The engagement unit according to the invention, after the inner part (1) has been slid onto a threaded bolt (33) in a pre-assembly arrangement, wherein the engagement means working together with the threaded bolt (33) and formed on spring arms of the inner part (1) can slide along the threaded bolt (33), can be slid onto the threaded bolt (33) and after the outer part (2) has been slid onto the inner part (1), can be tightened in the manner of a screw.