Electrical Conduit Ring Member for Reduced Insertion Resistance
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Solution Overview
Problem
Existing electrical conduit connection systems face challenges such as high insertion resistance, difficulty in visualizing the stopper ring during assembly, potential for the stopper ring to draw off during transport, and instability when stacked underground, due to limitations in existing pipe coupling designs and fitting structures.
Innovation Solution
The electrical conduit features a male fitting part with locking walls and a ring member that includes first and second click parts, allowing for reduced insertion resistance and stable connection, with the ring member sliding to facilitate easy assembly and prevent disconnection, and a water sealing member for enhanced sealing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional pipe coupling with spiral pipe is used for connecting electrical conduits, then connection is achieved by rotating and screwing, but insertion resistance is high and connection process is complex
Solution Approach 1:
The connection structure is divided into separate male and female fitting parts with distinct functions. The male fitting part includes a ring member with click parts that engage with corresponding features in the female fitting part, allowing linear insertion without rotation. This segmentation enables the male and female parts to connect through simple push-in motion, dramatically reducing insertion resistance compared to spiral screw connections.
Solution Approach 2:
Instead of using a spiral screw mechanism that requires rotational force, the invention inverts the approach by using a linear insertion mechanism with click parts that engage through direct pushing motion. The ring member with click parts on the male fitting part engages with corresponding features in the female fitting part during linear insertion, reversing the conventional rotational connection method and significantly reducing insertion resistance.
2Reliability
If a stopper ring is provided inside the female fitting part to prevent drawing off, then disconnection is prevented, but the stopper ring cannot be visualized during assembly and may draw off during transport
Solution Approach 1:
The anti-drawing off function is extracted from the internal stopper ring location and implemented through the ring member with click parts on the male fitting part. The click parts engage with corresponding features in the female fitting part during insertion, providing mechanical interlocking that prevents drawing off. This extracted design makes the connection mechanism visible during assembly while maintaining reliable prevention of disconnection.
Solution Approach 2:
The ring member with click parts acts as an intermediary mechanism between the male and female fitting parts. During assembly, the click parts engage with corresponding features in the female fitting part, providing both visual feedback of proper installation and mechanical prevention of drawing off. This intermediary structure solves both the visibility and reliability issues simultaneously.
3Stability of the object's composition
If the ring member is fixed in position, then structural stability is maintained, but insertion resistance increases and assembly becomes difficult
Solution Approach 1:
The ring member is designed with dynamic characteristics, featuring click parts that can deform elastically during insertion and then lock into position. The click parts bend to allow passage through the female fitting part during insertion, then spring back to engage with engagement parts, providing both easy assembly and stable locked position. This dynamic design allows the ring member to transition from mobile during insertion to stable in the final position.
Solution Approach 2:
The physical parameters of the ring member change during the assembly process. The click parts undergo elastic deformation, changing their shape and position temporarily during insertion, then return to their original configuration to provide locking. This parameter change enables the ring member to facilitate easy insertion while maintaining structural stability in the assembled state.
4Reliability
If multiple click parts are provided on the ring member, then locking reliability is improved, but device complexity increases
Solution Approach 1:
The locking mechanism is segmented into multiple discrete click parts distributed around the ring member's circumference. Each click part independently engages with corresponding features in the female fitting part, providing distributed locking points. This segmentation achieves high locking reliability through multiple engagement points while keeping each individual click part simple in structure, avoiding overall system complexity.
Solution Approach 2:
The click parts serve multiple functions: they guide the insertion motion, provide mechanical interlocking, prevent drawing off, and offer visual indication of proper assembly. This multi-functionality of the click parts achieves high reliability through a single simple structural element, avoiding the need for multiple separate components and thus not increasing device complexity.
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 solution reduces insertion resistance, ensures stable connections, and prevents the ring member from drawing off during transport or connection, while allowing for easy visualization and assembly, thereby improving the efficiency and reliability of electrical conduit connections.
Implementation Method 1
the ring member can slide over the ring member mounting position... reduced insertion resistance
Implementation Method 2
due to an elastic repulsive force of the ring member... prevent the stopper ring from drawing off
Data Source
AI summary
A ring member is disposed on a ring member mounting position. The ring member mounting position is a region between a pair of locking walls and is formed in a straight pipe shape. The ring member is in a substantially C shape with an opening at a part of its circumferential direction. The ring member may also be formed in a ring shape being connected at ring member joint parts. The ring member includes a reduced diameter part and first click parts protruding from the reduced diameter part substantially parallel in the pipe axial direction to form a slide guide. The ring member also includes second click parts of which outer diameters expand gradually from the reduced diameter part toward their tip ends. A male fitting part and a female fitting part are fitted with each other using the above ring member to obtain an electrical conduit. A connection structure for the electrical conduits, a bell block, a method for connecting electrical conduits, a method for connecting an electrical conduit and a bell block, a pipe coupling, and a ring member can be obtained thereby. The present invention can also provide a double-wall conduit of which an outer conduit is the electrical conduit having the same structures as the male fitting part and the female fitting part, a connection structure for the double-wall electrical conduits, and a conduit line using the connection structure.