Transmission Drive Assembly Axial Positioning Mechanism
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Solution Overview
Problem
The existing gear drive devices experience noise and mechanical loading issues due to the receiving element's positioning against the brush device during assembly, which complicates the assembly process and affects the reliability of the bearing device's end position.
Innovation Solution
A gear drive device design that allows the receiving element to be positioned in a first axial end position using a stop element, and then displaced to a second axial end position using a displacement element, ensuring a safe and defined assembly process while reducing noise and mechanical load on the brush device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the receiving element is pressed against the stop element (brush device) to achieve the first axial end position for assembly, then the assembly process is simplified and a defined initial position is achieved, but noise is generated and mechanical load is applied to the brush device
Solution Approach 1:
The axial positioning is segmented into two distinct stages: first positioning against the stop element for assembly alignment, then final positioning against the displacement element for operational stability. This segmentation allows the receiving element to serve different positioning functions at different assembly stages without compromising the brush device.
Solution Approach 2:
The stop element provides preliminary positioning during assembly to ensure correct alignment and insertion depth. After assembly, the displacement element takes over to provide the final operational positioning, preventing the receiving element from contacting the brush device during operation. This preliminary action approach separates the assembly function from the operational function.
2Volume of moving object
If the receiving element is positioned close to the brush device to ensure compact design, then the overall size is reduced, but noise and mechanical loading of the brush device increase
Solution Approach 1:
The displacement element acts as an intermediary between the receiving element and the brush device. It provides the final positioning function that prevents direct contact between the receiving element and brush device during operation, thereby eliminating noise and mechanical load while maintaining compact overall dimensions through precise positioning control.
3Adaptability or versatility
If the receiving element is allowed to move axially freely on the drive shaft, then assembly flexibility is improved, but the end position becomes undefined and unreliable
Solution Approach 1:
The system transitions from a static single-position design to a dynamic two-stage positioning system. During assembly, the receiving element is dynamically positioned against the stop element for flexibility. After assembly, it is dynamically displaced to the final position against the displacement element for precision. This dynamic approach allows the system to adapt to different operational requirements at different stages.
Data Source
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AI summary
The invention relates to a transmission drive assembly (10) having a drive motor (11) the drive shaft (23) of which protrudes with a portion (25) thereof into a transmission housing (12), wherein the drive shaft (23) is arranged on the side facing the transmission housing (12) in a bearing (32) which is held in a form-fit or force-closed manner in a substantially sleeve-shaped holding element (35; 65) which is arranged in a holding fixture (27) of the transmission housing (12). According to the invention, in an installation position for introducing and positioning the holding element (35; 65) in the holding fixture (27) of the transmission housing (12), the holding element (35; 65) is positioned in a first axial end position defined by an abutment element (30) of the drive motor (11), and, in an end position of the drive shaft (23) in the transmission housing (12), the holding element (35; 65) can be slid by means of a sliding element (47; 61; 62, 63) on the drive shaft (23) into a second axial end position which is axially remote from the at least one abutment element.