Threaded Bolt Mounting Lock for Fast Through-Hole Assembly

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

The challenge lies in simplifying the assembly process of connecting two components using threaded bolts, particularly in difficult-to-access positions, where aligning through holes and inserting threaded bolts is time-consuming and prone to errors.

Innovation Solution

A mounting lock with a cylindrical helix featuring retaining, transition, and blocking turns is adapted to threaded bolts, ensuring secure positioning within through holes by creating a friction-locking connection and preventing pullout, utilizing standardized thread geometries to determine wire diameter and inner diameter for reliable fitment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If traditional threaded bolts are used to connect two components through through holes, then the connection can be established, but the alignment of through holes and insertion of threaded bolts is time-consuming and error-prone

Engineering Contradiction:
Improveassembly speedVSAvoidtime for aligning through holes and inserting threaded bolts
Core Design Contradiction:
ProductivityVSLoss of time

Solution Approach 1:

The mounting lock is pre-assembled on the threaded bolt before insertion, with the blocking turn positioned to engage with the through hole edge. This preliminary configuration eliminates the need for complex alignment operations during assembly, as the mounting lock guides the threaded bolt into the correct position automatically.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The mounting lock acts as an intermediary component between the threaded bolt and the through hole. It simplifies the connection process by providing a guided insertion path and automatic positioning mechanism, mediating the interaction between the bolt and the hole to achieve rapid assembly without precise manual alignment.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Ease of operation

If the blocking turn is designed with elastic displacement capability, then the threaded bolt can be easily inserted into the through hole, but the structure becomes more complex

Engineering Contradiction:
Improveease of insertionVSAvoidcomplexity of mounting lock structure
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The blocking turn is designed with elastic properties that allow it to dynamically change its radial position. During insertion, the blocking turn can elastically displace radially inward to pass through the through hole edge, then returns to its original position to provide blocking function. This dynamic behavior enables easy insertion while maintaining a relatively simple structure.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The blocking turn utilizes changes in its physical state (elastic deformation) to achieve different functional requirements. By changing its radial dimension through elastic displacement, the blocking turn can transition between a blocking state (preventing pullout) and a pass-through state (allowing insertion), thereby simplifying the insertion process without requiring complex mechanical mechanisms.

Inventive Principle:
Principle #35Parameter changes

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 solution enables rapid and accurate assembly of threaded bolts within through holes, preventing pullout and ensuring secure connections, thus streamlining the connection process between components.

Implementation Method 1

creating a friction-locking connection and preventing pullout

Methodology Applied
Scientific EffectFriction: Friction

Data Source

PatentEP3875792B1Mounting device, threaded bolt with mounting protection, a component with an installed threaded bolt and a method for manufacturing the mounting protection and a method for assembling the threaded bolt with a mounting protection
Publication Date: 2022.03.16 BOLLHOFF VERBINDUNGSTECHNIK GMBH
  • EP3875792B1 patent drawingFigure 1~2
  • EP3875792B1 patent drawingFigure 3
  • EP3875792B1 patent drawingFigure 4~5

AI summary

The present invention relates to a mounting lock 1 adapted to a standardized coarse thread RG or a standardized fine thread FG of a threaded shank 14 of a threaded bolt 10 with a bolt head, such that the mounting lock 1 can be positioned securely on the standardized coarse thread RG or the standardized fine thread FG of the threaded shank 14 and the threaded bolt 10 with mounting lock 1 can be inserted securely into a component opening 72, wherein the mounting lock 1 has the following features: a cylindrical helix 20 consisting of a plurality of helically wound turns 30, 40, 50 of a wire, in particular a retaining turn 30, a transition turn 40 and adjacent to the second end 24 of the helix 20 is a blocking turn 50, which has a negative pitch PB compared to the retaining turn 30,so that at least one end region of the locking winding 50 is elastically displaceable in the axial direction of the central longitudinal axis L between an insertion position EP and a locking position BP, wherein the end region of the locking winding 50 forms the second end 24 of the helix 20 in the insertion position EP and is arranged radially outwards from the transition winding 40 and/or the retaining winding 30 in the locking position BP.