Carriage Arrangement Spring Recess for Compact Sliding Door Stability
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Solution Overview
Problem
Existing carriage arrangements for heavy sliding leaves face a trade-off between stability and compactness, as they become heavier due to improved insulation and more glass panes, requiring more massive designs that compromise size and compactness.
Innovation Solution
A carriage arrangement with a control arm that has a spring recess at its pivot bearing, allowing the spring to engage and hold the control pin in a guide link, reducing the length of the guide link and control arm, and featuring a leaf spring for enhanced compactness and stability, along with an eccentrically arranged control pin for further space savings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the carriage assembly is designed to be more stable and robust for heavy sliding sashes, then stability is improved, but compactness and size are compromised
Solution Approach 1:
The spring recess is positioned in a specific spatial location on the control arm that allows the spring to engage the control pin more effectively. This dimensional optimization enables the use of shorter control arms and guide tracks while maintaining the force transmission capability needed for stability, thus resolving the contradiction between stability and compactness
Solution Approach 2:
The invention changes the geometric parameters of the control arm and guide track by reducing their lengths through optimized spring engagement. The spring recess allows the spring to act at an optimal position, enabling shorter component dimensions while maintaining sufficient mechanical advantage and stability for heavy sliding sashes
2Volume of moving object
If the control arm and guide track are shortened for compactness, then compactness is improved, but the ability to securely hold the sliding sash may be compromised
Solution Approach 1:
The spring acts as an intermediary mechanism that transfers and amplifies the holding force from the control arm to the control pin. By positioning the spring recess optimally, the spring can engage the control pin with sufficient force to securely hold the sliding sash in the closed position, even with shorter control arms and guide tracks
Solution Approach 2:
The spring recess is designed with specific dimensional parameters that optimize the spring's engagement position. This allows the spring to exert maximum force on the control pin over a shorter distance, maintaining reliable holding capability while enabling compact overall dimensions of the carriage assembly
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 solution enables a stable and compact carriage arrangement that can securely hold the sliding sash in a parked position while allowing for a more compact design by reducing the length of the control arm and guide link, and efficiently transferring loads, thus addressing the need for both stability and space efficiency.
Implementation Method 1
the control arm bears sectionally against a spring of the carriage arrangement, which is arranged or formed on the stay arm, in order to indirectly hold the control pin in a parked section of the guide track in the parked position
Data Source
Figure 1a~1d
Figure 1e~1h
Figure 2a~2b
AI summary
The invention relates to a carriage arrangement (10) comprising a control arm (18), which is rotatably arranged on the deployment arm (16). On the deployment arm (16) is a spring (40) which press a control pin in the parking position of the carriage arrangement (10) indirectly into a parking section of a guide slot (28) of the carriage arrangement (10). In order to extend the pivot angle thereof on the deployment arm (16), the control arm (18) comprises a spring recess (44), wherewith the spring (40) engages in sections in the parking position. This enables a compact and stable configuration of the carriage arrangement (10), which can in addition be significantly improved by an eccentric attachment of the control pin on the control arm (18).