Sealed Door Transverse Frame for Concealed Component Assembly

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Solution Overview

Problem

Existing linkage doors have exposed transverse frames that allow dust accumulation and expose internal functional components, affecting appearance and safety.

Innovation Solution

A door body structure with a transverse frame that encloses functional components and is sealed by a side-sealing frame, using snap-fit or bolt connections to conceal components and prevent dust accumulation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If the transverse frame is exposed at the end of the door body, then the assembly process is simple, but dust accumulates inside the transverse frame and the appearance is affected

Engineering Contradiction:
Improveassembly simplicityVSAvoiddust accumulation
Core Design Contradiction:
Ease of manufactureVSObject-affected harmful factors

Solution Approach 1:

The transverse frame is nested within the side-sealing frame structure, with the side-sealing frame enclosing the transverse frame at its ends. This nesting arrangement conceals the transverse frame from external view while maintaining internal accessibility for assembly and maintenance operations.

Inventive Principle:
Principle #7Nested doll (Nesting)

Solution Approach 2:

The side-sealing frame acts as an intermediary structure between the door body and the transverse frame. It provides a sealing interface that prevents dust from reaching the transverse frame while allowing the transverse frame to remain functional and accessible for assembly purposes.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Ease of manufacture

If the functional components are exposed on the transverse frame, then the assembly process is straightforward, but the overall appearance of the door body is affected

Engineering Contradiction:
Improveassembly straightforwardnessVSAvoidoverall appearance
Core Design Contradiction:
Ease of manufactureVSShape

Solution Approach 1:

The functional components mounted on the transverse frame are nested within the enclosure formed by the side-sealing frame. This nesting conceals the functional components from external view while maintaining their operational accessibility during assembly and maintenance.

Inventive Principle:
Principle #7Nested doll (Nesting)

Solution Approach 2:

The side-sealing frame serves as an intermediary structure that separates the functional components from the external environment. It provides a sealing barrier that prevents dust accumulation while allowing the components to remain accessible for assembly operations.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Ease of manufacture

If the transverse frame ends are exposed, then the assembly process is simple, but the door body structure is vulnerable to cuts and portiere hooks

Engineering Contradiction:
Improveassembly simplicityVSAvoidprotection against cuts
Core Design Contradiction:
Ease of manufactureVSReliability

Solution Approach 1:

The transverse frame ends are nested within the side-sealing frame structure, which provides a protective enclosure. This nesting arrangement shields the exposed ends from contact with portiere hooks and other external objects that could cause cuts or damage.

Inventive Principle:
Principle #7Nested doll (Nesting)

Solution Approach 2:

The side-sealing frame acts as an intermediary protective structure between the vulnerable transverse frame ends and external hazards. It provides a sealing and protective interface that prevents direct contact with cutting objects while maintaining assembly accessibility.

Inventive Principle:
Principle #24Intermediary (Mediator)

Data Source

PatentEP4269738B1Door body structure
Publication Date: 2026.04.15 GUANGDONG OPK SMART HOME TECH CO LTD
  • EP4269738B1 patent drawingFigure 1
  • EP4269738B1 patent drawingFigure 2
  • EP4269738B1 patent drawingFigure 3~4

AI summary

Disclosed in the present application is a door body structure, including a door body, a side-sealing frame and a transverse frame used for mounting functional components; the transverse frame is fixedly connected on a top and/or a bottom of the door body; the side-sealing frame is enclosed on two sides of the door body and two ends of the transverse frame, so as to seal the ends of the transverse frame that provides with moving devices inside, which prevents the interior of the transverse frame from easily accumulating dust and prevents the internal moving devices from being exposed at ends of the transverse frame, thereby ensuring an overall structural beauty of the door body.