Bicycle Motor Mount Center Stand Integration
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Solution Overview
Problem
Bicycle frames with mid-engine electric motors face challenges in accommodating a center stand due to increased space requirements, leading to instability and limited space for accessories like mudguards, and existing solutions either extend the frame or require additional adapters.
Innovation Solution
The motor mount is equipped with horizontally aligned connection means that allow for the attachment of a center stand, enabling secure support near the center of gravity and accommodating mudguards without extending the frame, using fastening elements like screws or rivets, and secondary connection means for positional fixation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a mid-drive motor is installed in the bicycle frame, then the driving performance and power are improved, but the space for mounting a center stand is reduced
Solution Approach 1:
The motor mount is designed to serve multiple functions: it provides mechanical support for the mid-drive motor and simultaneously serves as the mounting structure for the center stand. The mounting holes intended for motor attachment are repurposed or positioned to also accommodate center stand fastening elements, eliminating the need for separate mounting space.
Solution Approach 2:
The patent combines the motor mounting function and center stand mounting function into a single integrated structure. The motor mount and center stand mounting points are merged into one component system, where the same structural elements and fastening mechanisms serve both purposes, thereby resolving the space conflict.
2Area of stationary object
If the frame is extended to accommodate a center stand, then the center stand installation space is improved, but the wheelbase is increased and maneuverability is reduced
Solution Approach 1:
The motor mount structure performs dual functions: supporting the motor and providing mounting points for the center stand. By utilizing the motor mount's structural elements for both purposes, the design avoids extending the frame while still accommodating the center stand installation.
Solution Approach 2:
Instead of extending the frame in the longitudinal direction (increasing wheelbase), the solution utilizes the vertical and transverse dimensions by positioning mounting holes on the motor mount structure. This allows center stand attachment without increasing the frame's length or affecting maneuverability.
3Ease of operation
If a horizontal stand plate is used behind the bottom bracket, then the center stand can be mounted, but the motor and housing may be damaged during assembly
Solution Approach 1:
The motor mount serves as an intermediary structure between the center stand and the motor/bottom bracket area. By providing dedicated mounting holes on the motor mount itself, the design allows center stand attachment without requiring tools or fasteners that could contact and damage the motor or housing during assembly.
Solution Approach 2:
The mounting function for the center stand is extracted from the general frame structure and specifically integrated into the motor mount. This separation ensures that center stand installation operations are performed on a dedicated structure designed for that purpose, eliminating the risk of accidental motor damage that could occur with ad-hoc mounting solutions.
4Area of stationary object
If rear-mounted kickstands are used, then the center stand installation space is improved, but the bicycle stability is reduced due to distance from center of gravity
Solution Approach 1:
The motor mount is designed to serve as both the motor support structure and the center stand mounting structure. This integration allows the center stand to be positioned centrally near the bottom bracket and motor assembly, maintaining optimal stability while providing adequate installation space.
Data Source
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AI summary
In the case of a bicycle frame (1) with a motor mount (2) for a drive motor (3), wherein the motor mount (2) has connection means (9, 12) for a bicycle stand (6) and first connection means (12) are designed to receive fastening means by means of which the bicycle stand (6) is attached to the motor mount (2), the invention proposes that the first connection means (12) are oriented horizontally and are accessible from the rear side of the motor mount (2) facing the bicycle frame (1). Furthermore, the invention proposes a bicycle stand designed for use as a center stand on such a bicycle frame (1).