Integrated Door Drive Gear Layout for Compact Speed Reduction
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Solution Overview
Problem
Existing door and window drive systems require adaptation of high motor speeds using reduction gears, but they are often costly and occupy significant installation space.
Innovation Solution
A compact door or window drive system design where the reduction gear, including a static element like a planetary gear, is integrated within the drive housing, sharing a common bearing with the drive spindle, eliminating the need for additional gear housings and separate bearing elements, and utilizing a separate motor housing for the motor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a reduction gear is added to adapt motor speeds, then speed adaptation is improved, but device complexity and installation space increase
Solution Approach 1:
The patent merges the reduction gear with the drive housing by integrating the planetary gear mechanism directly into the housing structure. The housing serves dual functions as both the structural enclosure and the mounting framework for the transmission elements, eliminating the need for separate gear housings and reducing overall device complexity while maintaining speed adaptation capability
Solution Approach 2:
The drive housing is designed to perform multiple functions simultaneously: it provides structural support, serves as the mounting framework for the planetary gear mechanism, and acts as the enclosure for the reduction gear. This multi-functionality reduces the number of separate components needed, thereby reducing device complexity while maintaining the speed reduction function
2Speed
If a reduction gear is added to adapt motor speeds, then speed adaptation is improved, but installation space increases
Solution Approach 1:
The reduction gear is merged with the drive housing structure, where the housing itself serves as the framework for mounting the planetary gear mechanism. This integration eliminates the need for separate gear housings and reduces the overall volume required for the drive system while maintaining full speed adaptation capability
Solution Approach 2:
The planetary gear mechanism is nested within the drive housing structure, with the housing serving as the outer framework that contains and supports the transmission elements. This nesting arrangement maximizes space utilization by placing the reduction gear components within the existing housing boundaries rather than adding external gear housings
3Reliability
If separate gear housing and bearing elements are used, then reliability is improved, but device complexity and costs increase
Solution Approach 1:
The patent combines multiple functional elements into the drive housing structure. The housing serves as both the structural enclosure and the mounting framework for the planetary gear mechanism. Bearing elements are integrated directly into the housing structure rather than being separate components, reducing the number of parts while maintaining reliability through proper structural support and alignment
4Reliability
If transmission elements are arranged in separate housings, then reliability is improved, but installation space increases
Solution Approach 1:
The patent merges the transmission elements with the drive housing by integrating the planetary gear mechanism directly into the housing structure. The housing serves dual functions as both the structural enclosure and the mounting framework, eliminating the need for separate gear housings and reducing overall installation space while maintaining reliability through proper structural support and alignment of all transmission elements
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 results in a cost-effective and space-efficient drive system with reduced axial length and component count, allowing for efficient speed adaptation while minimizing installation space and costs.
Implementation Method 1
a planetary gear between the motor shaft and the drive spindle, which includes at least one input element coupled to the motor shaft and one output element coupled to the drive spindle
Data Source
Figure 1~2
AI summary
The invention relates to a drive for a wing of a door or window, comprising a drive housing, a motor comprising a motor shaft, a drive spindle arranged in the drive housing and a reduction gear between the motor shaft and the drive spindle, comprising at least one input element coupled to the motor shaft and one output element coupled to the drive spindle, wherein at least one static element of the gear is arranged in the drive housing.