Cable Gland Snap-In Housing Assembly Without Angular Alignment
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Solution Overview
Problem
Existing cable gland mounting methods for electrical components are cumbersome and require angular alignment, making the process difficult and inefficient.
Innovation Solution
A snap-in connection mechanism using grooves and cams with angled ramp sections allows for easier mounting of cable glands along a longitudinal direction, eliminating the need for angular alignment and enhancing stability through stiffening ribs and electrically isolated materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a traditional threaded mounting method is used for cable glands, then the connection is secure and reliable, but the mounting process becomes cumbersome and requires angular alignment
Solution Approach 1:
The mounting connection is divided into separate functional elements: a cam element with ramp section for insertion and engagement, and a groove element with stop surface for positioning and locking. This segmentation allows each element to perform its specific function independently, simplifying the overall mounting process while maintaining connection reliability.
Solution Approach 2:
Instead of using a threaded connection where the cable gland actively engages with threads on the housing, the invention inverts the approach by using a snap-in connection where the cam element passively engages with the groove. The cam element is received by the groove rather than the groove being formed on the cable gland, simplifying the cable gland structure and easing the mounting process.
2Manufacturing precision
If angular alignment is required for cable gland mounting, then precise positioning is achieved, but the mounting process becomes difficult and time-consuming
Solution Approach 1:
The groove is designed to extend circumferentially around the middle axis over the complete circumference, creating an equipotential mounting interface. This allows the cam element to engage with the groove at any angular position without requiring specific alignment, eliminating angular alignment requirements while maintaining precise positioning through the stop surface contact.
Solution Approach 2:
The invention transitions from a two-dimensional angular alignment problem to a one-dimensional longitudinal insertion problem. The cam element with its ramp section is inserted along the longitudinal mounting direction, and the circumferential groove provides continuous engagement options, converting the complex angular positioning task into a simple linear insertion action.
3Ease of operation
If a snap-in connection with ramp sections is used, then mounting along longitudinal direction is easier, but the risk of improper engagement increases
Solution Approach 1:
The cam element is designed with a ramp section that performs preliminary engagement actions during insertion. The ramp section guides the cam into proper alignment with the groove and prepares the stop surfaces for contact, ensuring correct engagement before the final locking position is reached. This preliminary action prevents improper engagement while maintaining ease of mounting.
Solution Approach 2:
The snap-in connection provides tactile and audible feedback when the cam element properly engages with the groove. The contact between the groove side stop surface and cam side stop surface creates a distinct engagement sensation, allowing the operator to verify correct installation. This feedback mechanism ensures engagement reliability while keeping the mounting process simple and intuitive.
Data Source
AI summary
A housing assembly for an electrical component having a housing with a housing wall extending at least partly around a middle axis and defining an interior space in which said electrical component can be placed, and at least one cable gland which can be mounted to the housing along a mounting direction. The at least one cable gland is mounted by a snap-in connection to the housing. The snap-in connection has at least one groove having a groove side stop surface and at least one cam having a cam side stop surface. In the mounted position the at least one cam engages in the at least one groove and the groove side stop surface is in contact with the cam side stop surface.