Vertical Guide Rail Limiting Device for Early Door Assembly
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Solution Overview
Problem
Conventional doors face assembly challenges when installed before the floor is finished, leading to potential damage and rust issues, as well as operational disruptions due to the sharp cut edges and sensitivity of fresh concrete or screed to drafts.
Innovation Solution
A limiting device with a stop element and guide means, such as a roller, is integrated into the guide rail segment to counteract the movement of the door leaf before the floor is completed, ensuring protection of the floor and concrete while allowing for easy assembly without compromising operational reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the door is assembled before the floor is finished, then the assembly process is simplified and time is saved, but the guide rail segment and floor seal are at risk of damage due to floor bulging
Solution Approach 1:
The patent applies dimensional change by vertically offsetting the guide rail segment above the floor level. The guide rail segment is positioned at a height where it is not affected by floor bulging, while the door leaf can still rest on the finished floor. This vertical separation resolves the contradiction by allowing early assembly without exposing the guide rail to floor-related damage risks.
Solution Approach 2:
The patent implements preliminary action by pre-assembling the door with the guide rail segment in a suspended position before the floor is completed. The door leaf is held in a raised position during installation, and the limiting device is pre-positioned to control the door's movement. This allows the door to be assembled early while protecting it from floor bulging effects.
2Device complexity
If the lower edge of the guide rail segment is positioned at the same level as the contact leg, then the structure is simplified, but the floor and frame spar are damaged due to sharp cut edges
Solution Approach 1:
The patent applies beforehand cushioning by extending the contact leg of the frame beam beyond the guide rail segment's lower edge. This extended contact leg acts as a protective element that absorbs the impact of sharp cut edges during assembly, preventing damage to the floor and frame spar while maintaining structural simplicity.
3Ease of operation
If the door leaf rests directly on the unfinished floor during assembly, then the assembly process is easier, but drafts affect the fresh concrete or screed
Solution Approach 1:
The patent applies dimensional change by suspending the door leaf at a height above the unfinished floor during assembly. The door leaf is positioned in the vertical dimension where it does not create drafts affecting the fresh concrete, while still allowing easy assembly through the suspended position. After floor completion, the door leaf rests on the finished floor.
4Productivity
If the guide rail segment is compressed during floor finishing, then the floor can be completed, but the operational reliability of the door is impaired
Solution Approach 1:
The patent applies dimensional change by positioning the guide rail segment vertically above the floor level, where it is not subjected to compression during floor finishing. The fastening leg extends into the room providing space for floor bulging, while the guide rail segment remains in a protected vertical position, maintaining door operational reliability throughout floor completion.
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 limiting device facilitates easy assembly by suspending the door leaf until the floor is finished, preventing damage and ensuring reliable operation by maintaining protection from drafts and allowing for proper floor completion without damaging the floor seal or frame.
Implementation Method 1
a guide means designed as a roller (30) is fastened to the door leaf element (10)
Implementation Method 2
the movement of the guide means (30) in the direction of gravity is limited by means of a limiting device (50)
Data Source
Figure 1~3
AI summary
A gate with a gate leaf that is movable between an open position and a closed position, in which it is arranged approximately in a vertical plane and closes a wall opening, a guide rail arrangement with at least one guide rail segment extending in the direction of gravity and extending approximately parallel to the lateral edge of the gate leaf in the closed position for guiding the gate leaf movement, and a guide means attached to the gate leaf in the area of the lower edge of the gate leaf in the closed position and at least partially received in the guide rail segment in the closed position, wherein a limiting device is defined in the area of the lower end of the guide rail segment with respect to the guide rail segment, limiting the movement of the guide means in the direction of gravity.