Wrap Bracket With Push-On Nut For Secure Tube Assembly
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Solution Overview
Problem
Wrap brackets used to secure elongated members to vehicles often require pre-assembled clamp parts and grommets, which can be unwieldy and difficult to hold in position during assembly, necessitating a solution for temporary attachment to the vehicle before permanent securing.
Innovation Solution
A wrap bracket assembly featuring a clamp with a push-on nut, including a receptacle opening with radial teeth and outer and inner legs that clip to attachment flanges, allowing for secure closure and shipping as a pre-assembled unit, with a crimp tab to hold the flanges together and a grommet for receiving elongated members.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If wrap brackets are pre-assembled as PIA on assembly line, then assembly completeness is improved, but handling difficulty increases
Solution Approach 1:
The push-on nut is divided into separate components (nut body, outer leg, inner leg, crimp tab) that are assembled in a simplified sequence. The legs are spread apart to open the clamp, allowing the grommet and tube to be inserted, then the legs are released to close and secure the assembly. This segmentation makes the pre-assembled PIA easier to handle and install on the vehicle.
2Adaptability or versatility
If clamp parts and grommet are assembled separately, then assembly flexibility is improved, but assembly time increases
Solution Approach 1:
The push-on nut is pre-assembled in the open position with the outer and inner legs spread apart, ready to receive the grommet and tube. The crimp tab is pre-positioned to be bent over the tube after insertion. This preliminary preparation allows the assembly to be quickly closed and secured in one continuous motion during final installation, reducing overall assembly time while maintaining flexibility.
3Strength
If push-on nut legs are made rigid, then structural strength is improved, but assembly difficulty increases
Solution Approach 1:
The outer and inner legs of the push-on nut are designed with elastic flexibility, allowing them to be spread apart when force is applied during assembly. Once the clamp is closed and the grommet and tube are inserted, the legs return to their original position, providing a secure rigid grip. This dynamic behavior allows easy assembly while maintaining strong structural holding power.
Data Source
AI summary
A wrap bracket assembly includes a clamp and a push-on nut. The clamp includes a first attachment flange defining a first attachment opening, a second attachment flange defining a second attachment opening. A loop portion is disposed between the first attachment flange and the second attachment flange. The push-on nut defines a receptacle opening having teeth that extend radially inwardly and partially extend across the first attachment opening. The push-on nut includes an outer leg and an inner leg that are clipped to the first attachment flange in an open position. The crimp tab is bent over the second attachment flange to hold the first and second attachment flanges together in a closed position.