Tolerance Compensation Nut Assembly for Consistent Gap Control
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Solution Overview
Problem
In industrial applications, such as the automobile industry, there is a need for a tolerance compensation assembly that can maintain a consistent gap between components while allowing for adjustable axial length to accommodate manufacturing tolerances and ensure proper assembly.
Innovation Solution
The tolerance compensation assembly comprises a nut assembly with a mounting nut and an adjusting nut, along with a holder that includes a mounting channel and connecting portions. The nut assembly is configured to be partially received in the holder, allowing for axial movement and adjustment, while the holder's limiting portions prevent the nut assembly from loosening during transportation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a fixed-length fastening assembly is used, then the structure is simple and easy to manufacture, but it cannot accommodate manufacturing tolerances and maintain consistent gaps between components
Solution Approach 1:
The fastening assembly transitions from a fixed-length structure to an adjustable-length structure. The nut assembly includes an adjustable portion with external threads that can be rotated relative to the mounting nut's internal threads, allowing the axial length to be dynamically adjusted to compensate for manufacturing tolerances and maintain consistent gaps between components.
Solution Approach 2:
The axial length parameter of the fastening assembly is made variable through the threaded adjustment mechanism. By rotating the adjustable portion of the nut assembly, the axial length can be precisely changed to accommodate different manufacturing tolerances while maintaining the required gap consistency between connected components.
2Manufacturing precision
If an adjustable nut assembly is used to accommodate tolerances, then manufacturing precision is improved, but the risk of loosening during transportation increases
Solution Approach 1:
The holder includes limiting portions that preemptively prevent the nut assembly from loosening during transportation. These limiting portions engage with corresponding features on the nut assembly to restrict rotational movement, applying counter-action before loosening can occur, thereby maintaining both adjustability and reliability.
3Adaptability or versatility
If the nut assembly can be adjusted axially, then adaptability to different tolerances is improved, but the device complexity increases
Solution Approach 1:
The nut assembly employs a nested structure where the adjustable portion with external threads is inserted into the mounting nut that has internal threads. This nesting arrangement allows the adjustable component to be housed within the mounting nut, providing tolerance accommodation functionality while minimizing the overall increase in device complexity.
Data Source
AI summary
The present disclosure provides a tolerance compensation assembly, comprising a nut assembly (102, 103) and a holder (101), wherein the nut assembly comprises a mounting nut (301) and an adjusting nut (302), the adjusting nut (302) being configured to be at least partially received in the mounting nut (301), and the adjusting nut (302) being rotatable relative to the mounting nut (301) by means of thread fit so as to move relative to the mounting nut (301) along an axial direction of the nut assembly; and wherein the holder (101) has a mounting channel (211) and a holder connecting portion (215), the holder connecting portion (215) being configured to fit with a nut connecting portion (425) such that the mounting nut (301) is capable of being held in the mounting channel (211), and the holder connecting portion (215) and the nut connecting portion (425) being at least partially disposed within the mounting channel (211). The tolerance compensation assembly according to the present disclosure has a small size in the axial direction.