Bearing Bracket Mounting Structure Self-Alignment
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Solution Overview
Problem
Existing bearing bracket mounting structures require additional components like dowel pins for proper alignment, leading to increased size, volume, and assembly complexity, which can result in adverse effects such as noise, vibration, and reduced durability due to misalignment at high-speed operations.
Innovation Solution
A bearing bracket mounting structure featuring an enlarged portion with an inclined arrangement guide and alignment surfaces, allowing self-alignment and elimination of the need for dowel pins by using apertures forming a triangular shape and an enlarged groove for precise positioning and fastening.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If dowel pins are added to guide the bearing bracket to the correct position, then alignment precision is improved, but device complexity and volume increase
Solution Approach 1:
The invention extracts and eliminates the dowel pin component from the mounting structure. Instead of adding dowel pins to guide alignment, the patent uses the inherent geometry of the coupling portion (enlarged from the supporting portion) to provide self-alignment during bolting, thereby removing the need for separate alignment components.
Solution Approach 2:
The coupling portion's enlarged geometry serves a dual function: it provides the mounting surface for bolts and simultaneously guides the alignment of the bearing bracket. The self-alignment is achieved through the geometric relationship between the coupling portion and the fixing portion, eliminating the need for external alignment aids.
2Reliability
If dowel pins and additional components are mounted for proper alignment, then reliability is improved, but assembly time and productivity are reduced
Solution Approach 1:
The invention merges the alignment function and the fastening function into a single integrated structure. The coupling portion's geometry simultaneously provides alignment guidance and bolt mounting capability, eliminating the need for separate dowel pin insertion and fastening operations, thereby reducing assembly steps and time.
Solution Approach 2:
The alignment geometry is pre-formed in the coupling portion during manufacturing. When the bearing bracket is mounted, the self-alignment feature is already prepared to guide the bolts into the correct position, eliminating the need for separate alignment operations during assembly.
3Manufacturing precision
If the coupling portion is enlarged to accommodate dowel pins, then alignment function is improved, but volume and area of the bearing bracket increase
Solution Approach 1:
The coupling portion is designed to perform multiple functions: it provides the mounting surface for bolts, guides the alignment of the bearing bracket, and eliminates the need for separate dowel pin bores. This multi-functional design achieves alignment precision without requiring additional volume for separate alignment components.
Data Source
AI summary
A structure for mounting a bearing bracket is provided. The structure includes a supporting portion into which a drive shaft is fitted and a coupling portion which is enlarged from the supporting portion and is fastened by bolts to a fixing portion formed at a power train. The coupling portion has two or more apertures into which the bolts are inserted, and at least one enlarged portion that protrudes on a surface, which comes into contact with the fixing portion, to enlarge a length of each apertures, and the fixing portion has bolt bore opened to correspond to the apertures of the coupling portion, respectively, and an enlarged groove formed at the bolt bore where the enlarged portion enters and has an increased diameter to fit the enlarged portion into the enlarged groove.