Window Lock Structure for Split Air Conditioner Pipe Routing

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Solution Overview

Problem

During the installation of split air conditioners, the flexible refrigerant pipe extending through the window causes the original locking mechanism to fail, allowing the window leaf to be blown open, leading to rainwater intrusion and safety hazards.

Innovation Solution

A window lock structure comprising first and second lock members mounted on the window frame and leaf, respectively, connected by a connection member to limit the opening degree of the ventilation slit, using adjustable elements like Velcro or cable ties to restrain the window leaf.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the window is opened to maximum state to allow outdoor unit delivery, then the installation convenience is improved, but the window leaf cannot be completely closed causing safety hazards and rainwater intrusion

Engineering Contradiction:
Improveinstallation convenienceVSAvoidwindow closing reliability
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The window locking function is segmented into two independent parts: the original locking mechanism and the new limit mechanism. The limit mechanism consists of separate components (limit component with limiting member, and limiting component with limiting structure) that work independently from the original lock, providing an additional layer of safety without interfering with installation operations.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The connection member acts as an intermediary element that connects the first lock member mounted on the window frame to the second lock member mounted on the window leaf. This intermediary component transmits the limiting action from the fixed side to the movable side, enabling the opening degree limitation function.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Adaptability or versatility

If the flexible refrigerant pipe extends through the window, then the personal installation capability is improved, but the original locking mechanism fails to work

Engineering Contradiction:
Improvepersonal installation capabilityVSAvoidlocking mechanism reliability
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The locking system transitions from a static binary state (locked/unlocked) to a dynamic controlled range. The window leaf can be positioned at different opening degrees within the limited range, allowing the flexible refrigerant pipe to pass through while maintaining security. The limit component enables continuous adjustment within bounds rather than fixed positions.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The limit mechanism is pre-configured to prevent the window from reaching the fully open position before the harmful effect (wind blowing the window open) can occur. By establishing the opening degree limit in advance, the system proactively counteracts the potential safety hazard rather than reacting to it after it occurs.

Inventive Principle:
Principle #9Preliminary anti-action

3Reliability

If the window leaf is constrained by the original locking mechanism, then the window security is improved, but the refrigerant pipe installation is complicated

Engineering Contradiction:
Improvewindow securityVSAvoidlocking mechanism complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The limit mechanism provides more locking control than the original mechanism alone, but only in the dimension of opening degree limitation. The locking strength and security features match the original mechanism, avoiding excessive complexity while achieving the additional safety function of preventing full opening.

Inventive Principle:
Principle #16Partial or excessive action

Data Source

PatentEP4686795A1Window lock structure and air conditioner assembly
Publication Date: 2026.02.04 GD MIDEA AIR CONDITIONING EQUIP CO LTD
  • EP4686795A1 patent drawingFigure 1
  • EP4686795A1 patent drawingFigure 2
  • EP4686795A1 patent drawingFigure 3

AI summary

Disclosed are a window lock structure and an air conditioner assembly. The window lock structure includes a first lock member, a second lock member, and a connection member. One of the first lock member and the second lock member is mounted on the window frame, and another of the first lock member and the second lock member is mounted on the window leaf. The connection member is configured for connecting the first lock member and the second lock member to limit an upper limit of an opening degree of the ventilation slit. The technical solution provided by the present application can prevent the window leaf from being completely blown open, thereby causing the problem of rainwater drifting into the room.