Door Window Operating Rod Connecting Device
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing connecting devices for doors and windows, particularly those made of metal, PVC, or PVC and wood, suffer from poor holding strength over time due to deterioration from repeated use, leading to weakened joints and potential security issues during break-in attempts.
Innovation Solution
A connecting device that is more compact and wear-resistant, featuring a base with bottom end extensions that match the profile of the operating rod, providing additional mechanical strength and isolating the rod from strain, while maintaining the basic constructional architecture of the operating rods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If traditional connecting means (socket and caulking) are used to attach accessories to the operating rod, then the accessories can be quickly positioned and applied, but the holding strength deteriorates over time due to poor resistance against repeated use and lateral forces
Solution Approach 1:
The connecting device uses a composite structure combining a plastic base with a metal reinforcement element (insert or cage) inside the socket. This composite construction allows the plastic to provide ease of assembly while the metal element provides superior mechanical strength and resistance to lateral forces, resolving the contradiction between ease of application and holding strength durability
Solution Approach 2:
The connecting device is divided into separate functional components: a plastic base for positioning and a separate metal reinforcement element for strength. This segmentation allows each component to be optimized for its specific function - the plastic for ease of assembly and the metal for durability - while working together to solve the contradiction
2Ease of operation
If the rod is directly coupled to accessories (pins, bosses, catches) through slidable connecting means, then the accessories can move freely to define open and closed configurations, but repeated use produces lateral forces that deteriorate the coupling and weaken the join
Solution Approach 1:
The metal reinforcement element acts as an intermediary between the plastic socket and the accessories (pins, bosses, catches). It absorbs and distributes the lateral forces generated during sliding operations, protecting the plastic material from deterioration while allowing free movement. This mediator resolves the contradiction between operational freedom and joint strength
Solution Approach 2:
The metal reinforcement element is pre-installed in the socket before the accessories are attached, providing beforehand protection against the lateral forces that will be generated during operation. This prior cushioning prevents deterioration before it occurs, maintaining join strength while allowing operational movement
3Ease of operation
If the connecting means allows loose fitting for slidable movement, then the rod can move freely in the groove, but the loose fit reduces resistance to lateral forces and accelerates deterioration under repeated stress
Solution Approach 1:
The combination of plastic and metal materials creates a composite connecting device where the plastic provides the necessary clearance for free movement while the metal element provides rigidity and resistance to lateral forces. This composite structure resolves the contradiction between freedom of movement and resistance to lateral strain
Data Source
AI summary
A device for connecting operating units (8) for doors and windows comprising: a control element (4) mounted on the operating side (3a) of a mobile frame (3); a rod segment (5) that is slidably mounted in a groove (C), made at least in the operating side (3a) and is connected to the control element (4) in such a way as to slide in both directions within the groove (C) to define the open and closed configurations of the door/window (1a, 1b); the rod segment (5) being associated by respective connecting means (10, 12), with elements (105, 6) that are functional or accessory to the operation of the rod segment (5), said elements (105, 6) protruding from the groove (C); these connecting means comprise at least one base (10) connected to at least one functional or accessory element (105, 6) defined by an operative portion (9); the size of the base (10) is such that, in use, it covers a free front section of the rod segment (5), the base (10) being frontally applicable to the rod segment (5) before the latter is inserted into the groove (C), and a bottom end extension (12) protruding transversally of the base (10), shaped to match the profile of the operating rod segment (5) and designed to be coupled to a respective slot (5a) formed on the rod (5) in such a way as to create a portion for uninterruptedly connecting and stiffening the rod segment (5) itself.