Bayonet Cable Fixing Sleeve with Spring Locking Hooks
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing cable fixation devices for cable outlets often fail to securely prevent cable twisting and pulling, and screw connections can compromise tightness against dust and water due to potential tilting of screw partners.
Innovation Solution
A cable fixation system comprising a clamping sleeve, a spring element, and a locking ring, with a helical strain relief element and disc-shaped sealing element, where the locking ring engages with the spring element's hooks to secure the clamping sleeve to the cable outlet socket, providing both strain relief and sealing against media.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If screw connections are used for cable fixation, then the cable can be secured to the cable outlet socket, but the screw partners can tilt with each other, jeopardizing the tightness against media such as dust and water
Solution Approach 1:
The invention extracts the screw connection from the cable fixation system and replaces it with a bayonet coupling mechanism. The clamping sleeve is directly coupled to the cable outlet socket via a bayonet connection, eliminating the intermediate screw partners that could tilt and compromise sealing. This direct coupling ensures both mechanical stability and maintained tightness against media.
Solution Approach 2:
Instead of using threaded screw connections that rely on rotational tightening, the invention inverts the approach by using a bayonet coupling with quarter-turn engagement. The clamping sleeve features a bayonet connection with a locking lever that engages with the cable outlet socket, providing secure fixation through a different mechanical principle that avoids the tilting issue of screw partners.
2Strength
If clamping tongues are pressed together to secure the cable, then the cable can be clamped, but the pressure exerted on the cable via the seal may not reach the required height to secure the cable against rotation and tension
Solution Approach 1:
The invention incorporates a spring element that is pre-loaded to automatically apply the necessary clamping force to the cable and seal. When the bayonet coupling is engaged, the spring element is compressed and exerts continuous radial pressure on the cable through the seal, ensuring the required securing force is achieved without complex adjustment mechanisms. The spring's preliminary stored energy provides the needed pressure immediately upon assembly.
Solution Approach 2:
The clamping mechanism uses a dynamic spring element instead of rigid clamping tongues. The spring can dynamically adjust its force application based on the cable's position and tension, maintaining optimal clamping pressure. The spring's elastic deformation allows it to compensate for variations in cable diameter and tension, ensuring consistent securing force without requiring complex mechanical adjustments.
3Reliability
If a cable gland with locking arms is used, then the cable holder can be secured, but special tools are required for installation
Solution Approach 1:
The bayonet coupling mechanism is designed to be self-securing through a simple locking lever that engages with the cable outlet socket without requiring special tools. The locking lever can be manually operated to engage or disengage the bayonet connection, allowing the cable holder to be securely installed or removed by hand. This self-service design eliminates the need for specialized installation tools while maintaining reliable security.
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 system effectively prevents cable rotation and tension while ensuring a tight seal against dust and water, eliminating the need for special tools and maintaining connection integrity.
Implementation Method 1
a spring element (10), in particular in the form of a compression spring, which applies a force on locking hooks (15)
Data Source
Figure 1a~1c
Figure 2
Figure 3
AI summary
The invention relates to an apparatus for fixing a cable to a cable outlet stub (30), comprising a clamping sleeve (2), a spring element (10) and a locking ring (20), wherein the spring element (10) comprises at least one locking hook (15) which can be inserted into a peripheral groove (31) in the cable outlet stub (30) as a result of a movement of the locking ring (20) relative to the clamping sleeve (2), and wherein the locking hooks (15) of the spring element (10), as the locking ring (20) rotates into an end position of a first direction (locking direction), are fully inserted into the peripheral groove in the cable outlet stub (30), so that the clamping sleeve (2) is captively held on the cable outlet stub (30).