Tolerance Compensation Fastening Assembly for Misalignment Control
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Solution Overview
Problem
Existing fastening systems struggle to compensate for manufacturing and mounting tolerances between components, leading to misalignment and improper fastening.
Innovation Solution
A tolerance compensation fastening assembly comprising a bolt, compensation element, and connection element with holding means, allowing for adjustable positioning and secure fastening through threaded engagement and biasing arms or step surfaces to accommodate manufacturing tolerances.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional threaded fastening elements are used, then fastening between components is realized by torque, but manufacturing and mounting tolerances cannot be compensated, leading to misalignment
Solution Approach 1:
The fastening assembly is divided into separate functional modules: a fastening element (bolt/nut), a compensation element with compensation hole, and a connection element. This segmentation allows each component to perform its specific function - the fastening element provides clamping force, the compensation element absorbs positional deviations, and the connection element joins components - while collectively achieving tolerance compensation without requiring complete redesign of the entire fastening system
Solution Approach 2:
The compensation element acts as an intermediary between the fastening element and the connection element. Its compensation hole, positioned offset from the fastening element's axis, serves as a mediator that absorbs and accommodates positional deviations and angular misalignments between components, allowing the fastening system to tolerate manufacturing and mounting variations while maintaining secure connection
2Reliability
If tolerance compensation is implemented, then misalignment is reduced, but the fastening assembly requires additional components and structure
Solution Approach 1:
The compensation element integrates multiple functions into a single component: it provides the compensation hole for tolerance absorption, serves as a structural connector between the fastening element and connection element, and maintains the geometric relationship between these components. This merging reduces the need for separate adjustment mechanisms or multiple specialized components, achieving reliable alignment with moderate complexity
Solution Approach 2:
The compensation hole is designed with specific geometric characteristics (offset position, dimensions) that enable dynamic adaptation to positional deviations and angular misalignments within a certain range. This dynamic capability allows the assembly to self-accommodate tolerances during assembly and operation, improving reliability without requiring active adjustment mechanisms or excessive components
3Manufacturing precision
If conventional fastening methods are used, then assembly is simple, but tolerance accumulation leads to improper fastening
Solution Approach 1:
The compensation element is pre-configured with a compensation hole at a specific offset position and with specific dimensions during manufacturing. This preliminary action embeds the tolerance compensation capability into the component design itself, so that during assembly, the system automatically accommodates deviations without requiring complex adjustment procedures or specialized assembly tools, maintaining ease of manufacture while improving alignment accuracy
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 secure, efficient fastening by compensating for tolerances in multiple directions, ensuring proper alignment and preventing disengagement during assembly, storage, and use.
Implementation Method 1
a distal end of the biasing arm forms a bearing surface configured to abut against a stop surface provided on the bolt rod when the tolerance compensation fastening assembly is in the pre-assembled position
Implementation Method 2
The compensation element comprises a body and a flange, the body having an axis and a channel extending along the axis... a threaded connection portion provided on an outer surface of the body and extending in the longitudinal direction Y
Data Source
AI summary
The present disclosure provides a tolerance compensation fastening assembly for fastening a second part to a first part by cooperating with a nut element provided on the first part. The tolerance compensation fastening assembly comprises a bolt, a compensation element, a connection element, and a holding means. The compensation element comprises a body and a flange, and the flange is provided at one end of the body and defines a compensation hole in communication with a channel of the body. A bolt head is accommodated in the channel and is blocked by the flange, and a bolt rod passes through the compensation hole. The connection element comprises a connection disc and connection legs, and the flange is located between the bolt head and the connection disc. The connection disc is provided with a connection hole to receive the bolt rod. The connection legs are configured to connect the connection disc to the second part. The holding means is provided on the connection disc and the bolt rod, and is configured to couple the bolt rod to the connection disc to prevent the bolt rod from being withdrawn from the connection hole, thereby holding the bolt, the compensation element and the connection element in a pre-assembled position.