Spindle Drive Concealing Door Window Levers
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional door and window drive systems require visible levers that protrude from the plane of the pivoting element, limiting the pivoting angle and obstructing access when open.
Innovation Solution
A spindle drive system with a push rod extending along the longitudinal axis, coupled to the frame via a joint rod, allowing for torque transmission without visible levers, enabling larger pivoting angles and concealed power transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional lever-based drive system is used, then the door or window can be pivoted, but visible levers protrude from the plane of the pivoting element and limit the pivoting angle
Solution Approach 1:
The drive system is arranged entirely within the plane of the pivoting element by transitioning from a protruding lever mechanism to an in-plane spindle and push rod arrangement. The spindle rotates within the plane, and the push rod moves parallel to the plane, eliminating components that extend beyond the pivoting element's surface.
Solution Approach 2:
The drive components (spindle, spindle nut, push rod) are nested within the body of the pivoting element. The spindle is received in a bearing housing that is integrated into the pivoting element, and the push rod is received in a slot within the pivoting element, creating a compact nested arrangement that eliminates external protrusions.
2Ease of operation
If a lever protrudes from the frame to couple to the sash, then the sash can be pivoted, but access is obstructed when the sash is open
Solution Approach 1:
The protruding lever that caused access obstruction is completely removed from the system. Instead, the drive mechanism is embedded within the pivoting element itself, with the push rod extending only far enough to engage the counter-closing edge of the frame, eliminating the access obstruction problem while maintaining the pivoting function.
3Device complexity
If the spindle drive is arranged in a fixed position on the pivoting element, then the structure is simplified, but the push rod must extend across the opening to reach the frame
Solution Approach 1:
The spindle drive is positioned at a specific location on the pivoting element where the push rod can engage the counter-closing edge of the frame most efficiently. The bearing housing for the spindle is integrated into the body of the pivoting element at an optimal position that minimizes the push rod extension while maintaining the pivoting function.
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
Enables seamless pivoting of doors and windows over a wide angle without visible levers, ensuring secure closure and easy operation, potentially eliminating the need for separate locking devices.
Implementation Method 1
a motor drive device which acts between the pivoting element and the frame to pivot the pivoting element relative to the frame. The motor drive device is formed by a spindle drive with a spindle extending along a longitudinal axis and a spindle nut that is in threaded engagement with the spindle.
Implementation Method 2
the spindle nut rolls on and along the spindle of the spindle so as to transmit torque for pivoting the door or window relative to the frame.
Implementation Method 3
The push rod is coupled to the frame via a joint rod that is articulated to the push rod, so that, by moving the push rod to pivot the pivoting element relative to the frame.
Implementation Method 4
The push rod is coupled to the frame via a joint rod that is articulated to the push rod, so that, by moving the push rod to pivot the pivoting element relative to the frame.
Data Source
Figure 1~2
Figure 3A~3B
Figure 4A~4B
AI summary
The invention relates to an assembly of a door or a window of a building, comprising a pivot element, a frame on which the pivot element is arranged such as to pivot about a pivot axis, and a motor drive device, which acts between the pivot element and the frame such as to pivot the pivot element relative to the frame and which, due to a spindle drive, is designed with a spindle extending along a longitudinal axis and a spindle nut that is in thread engagement with the spindle. The spindle drive is arranged in a positionally fixed manner along the longitudinal axis on the one pivot element and frame. In such an assembly, the spindle drive (3) comprises a push rod (31) that extends along the longitudinal axis (L) and that, driven by a movement of the spindle (32) relative to the spindle nut (310), can be displaced on the one pivot element (1, 1') and frame (2, 2') along the longitudinal axis (L) and is coupled to the other pivot element (1, 1') and frame (2, 2') via a joint rod (303) that is articulated to the push rod (31) such as to pivot the pivot element (2, 2') relative to the frame (1, 1') by a displacement of the push rod (31). Thus, an assembly of a door or a window of a building is provided, which has a simple construction and reliable force transmission and allows to forgo the use of clearly visible levers protruding from the plane of a pivot element.