Drive Housing Threaded Sleeve Dynamics for Tilting Force Reduction
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Solution Overview
Problem
Existing drive housings for window or door connecting rod fittings require a tool to disengage threaded sleeves and allow screwing from only one side, leading to tilting issues and complex installation processes.
Innovation Solution
The drive housing design allows threaded sleeves to move freely in both directions of the screw axis without a tool, with elastic connection to the drive pinion, preventing tilting forces and enabling easy installation and disassembly, using materials like die-cast metal with a predetermined breaking point or elastic web connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the threaded sleeves are fixed in position on the drive housing, then the handle can only be screwed from one side and tilting forces are transferred to the mount, but if the threaded sleeves are made movable, then they can accommodate screwing from both sides and reduce tilting forces, however a tool is required to disengage them from the engaged position
Solution Approach 1:
The threaded sleeves are designed to be movable rather than fixed, allowing them to shift position during assembly and operation. This dynamic design enables the sleeves to accommodate screwing from either side and reduces tilting forces on the mount, while the movement capability itself serves as the disengagement mechanism, eliminating the need for additional tools or complex mechanisms.
2Ease of operation
If the threaded sleeves are made movable to allow disengagement without a tool, then assembly becomes simpler, but the connection stability between the handle and drive housing may be reduced
Solution Approach 1:
The threaded sleeves transition from a fixed to a movable state, allowing them to be easily positioned during assembly and then stabilize during operation. The sleeves can move freely during assembly to accommodate alignment, but once the handle is screwed in, the connection provides sufficient stability for reliable operation without requiring additional locking mechanisms.
3Object-affected harmful factors
If the threaded sleeves are elastically connected to the drive housing, then noise during actuation is reduced and assembly is simplified, but the connection may fail under high loads
Solution Approach 1:
The connection between the threaded sleeves and drive housing is designed with elastic properties that allow controlled movement and deformation. This elastic connection absorbs vibrations and reduces noise during actuation, while the material selection and geometric design ensure the connection maintains sufficient strength for normal operational loads, with a predetermined breaking point providing safety against catastrophic failure.
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
This design ensures reliable holding of the handle on the window or door, reduces noise during actuation, and simplifies assembly and disassembly, while maintaining structural stability and reducing manufacturing costs.
Implementation Method 1
the threaded sleeves are elastically connected to the drive housing. The intended load, above which the threaded sleeves are guided in a longitudinally displaceable manner in the drive housing, is determined here by the elasticity of the connection of the threaded sleeve to the drive housing.
Implementation Method 2
The drive housing according to the invention can be manufactured particularly inexpensively from any inelastic material if a predetermined breaking point is arranged between the threaded sleeves and the drive housing.
Data Source
Figure 1~2
Figure 3~4
AI summary
The gear housing has the threaded sleeves (23,24) arranged in an insertion position in a central position of moving areas. The gear housing is released to both directions of the moving areas of the threaded sleeves in order to allow the movement by a screw connection with a handle on the insertion position in the corresponding releasing position. The threaded sleeves are flexibly connected with the housing units (17,18).