Adjustable Elevator Landing Door Frame Design
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Solution Overview
Problem
The existing solutions for elevator landing door frames require customized production for specific dimensions, leading to long waiting times, high manufacturing costs, complex inventory management, and potential installation delays due to measuring errors, as they need to accommodate various door opening sizes and configurations.
Innovation Solution
A frame design for elevator landing doors featuring slidable lateral jambs and a crossbar with adjustable fixing means, including recesses, through slots, and screws or rivets, allowing for variable positioning to accommodate different door opening sizes, simplifying manufacturing and assembly while reducing inventory complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If customized production is used for each specific door opening dimension, then the frame can be precisely adapted to the required opening size, but the waiting time increases and manufacturing costs rise
Solution Approach 1:
The frame components are designed with movable and adjustable features. The lateral jambs can slide relative to each other through recesses and fixing mechanisms, allowing the frame width to be dynamically adjusted to match different door opening sizes. The sill can also be positioned at different heights using adjustable support brackets, enabling the frame height to adapt to various requirements. This dynamic adjustability eliminates the need for customized production while maintaining precise adaptation to specific openings.
Solution Approach 2:
The invention changes the fixed dimensional parameters of traditional frames into variable parameters. By incorporating slidable lateral jambs with recesses and adjustable fixing means, the frame width can be modified. By using support brackets with adjustable positioning, the frame height can be changed. These parameter changes allow a single standardized frame design to serve multiple door opening specifications, reducing both waiting time and manufacturing costs.
2Loss of time
If standardized frames are manufactured from warehouse inventory, then delivery time is reduced, but inventory logistics become complex and costly
Solution Approach 1:
The frame is designed as a universal, multi-functional component that can accommodate multiple door opening sizes and configurations. The standardized frame includes lateral jambs with recesses that allow width adjustment, and support brackets that enable height adjustment. This universal design means that only one type of frame needs to be manufactured and stored in the warehouse, yet it can serve various installation requirements, greatly simplifying inventory logistics while maintaining fast delivery.
3Measurement precision
If measuring errors are encountered during installation, then work must be suspended and corrected pieces must be obtained, causing delays
Solution Approach 1:
The adjustable features of the frame allow installers to compensate for minor measurement errors or variations in the door opening without needing to replace components. The slidable lateral jambs and adjustable support brackets provide flexibility to adapt to slight deviations from ideal measurements, enabling installation to continue without suspension and maintaining productivity.
4Adaptability or versatility
If multiple types of frame pieces are stored for different dimensions, then various opening sizes can be accommodated, but warehouse management becomes complicated
Solution Approach 1:
By designing a universal frame with adjustable width and height capabilities, the invention reduces the variety of frame pieces that need to be stored. Instead of maintaining inventory of multiple standardized frame sizes, the warehouse only needs to store the single universal frame type, which can be configured to fit various door openings. This dramatically simplifies warehouse management while preserving adaptability to different installation requirements.
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
Frame (1 ) for landing door of an elevator defining an opening (100), comprising: two lateral jambs (2, 3) substantially parallel; a crossbar (4) fixed to upper ends (2a, 3a) of the lateral jambs (2, 3) by first fixing means (6); a sill (5) fixed to lower ends (2b, 3b) of the lateral jambs (2, 3) by second fixing means (7), in which the lower end (2b, 3b) of each lateral jamb (2, 3) has a series of through holes (14) aligned along the prevalent extension of the lateral jamb (2, 3), the second fixing means (7) comprising at least one support bracket (13) of the sill (5) at the lower end (2b, 3b) of each of the lateral jambs (2, 3) and a screw or rivet (15) which, when joining the corresponding support bracket (13) to the lower end (2b, 3b) of the lateral jamb (2, 3), crosses one of the aligned through holes (14) so that the sill (5) is located at a pre-established height with respect to the lateral jambs (2, 3).