Synchronous Stem and Handle Folding Mechanism for Electric Scooters
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Solution Overview
Problem
Existing electric scooters require complex folding processes involving separate operations for telescoping the stem and folding the handle, which complicates user experience and does not meet comfort standards.
Innovation Solution
A stem assembly with a telescoping mechanism and handle folding mechanism that includes a locking mechanism and a driving mechanism, allowing for synchronous movement control through a single driving mechanism, simplifying the folding process by integrating the stem telescoping and handle folding operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If separate operations are used for telescoping the stem and folding the handle, then the folding mechanism can be simple and reliable, but the folding process becomes complicated and user experience deteriorates
Solution Approach 1:
The patent combines the stem telescoping mechanism and handle folding mechanism into a single integrated assembly. The driving mechanism simultaneously controls both the locking mechanism (for stem telescoping) and the first limiting member (for handle folding), allowing both operations to be performed through one user action rather than separate operations.
Solution Approach 2:
The driving mechanism serves multiple functions: it operates the locking mechanism to control stem telescoping and operates the first limiting member to control handle folding. This multi-functional design allows a single mechanism to perform what would traditionally require separate mechanisms, simplifying the user interface while managing complexity through functional integration.
2Ease of operation
If a single driving mechanism controls both stem telescoping and handle folding, then user operation convenience improves, but the device complexity increases
Solution Approach 1:
The patent merges the control of stem telescoping and handle folding into a single driving mechanism. This unified mechanism is connected to both the locking mechanism and the first limiting member, enabling synchronized operation through one user input, thereby improving operation convenience.
Solution Approach 2:
While integrating control functions, the patent maintains clear functional segmentation within the assembly. The driving mechanism is distinct from the locking mechanism and the first limiting member, allowing each component to be designed and analyzed separately while working together as a coordinated system. This modular segmentation manages overall complexity.
3Productivity
If the stem and handle are folded simultaneously through one-button triggering, then the folding speed and efficiency improve, but the control mechanism becomes more complex
Solution Approach 1:
The patent designs the driving mechanism to simultaneously initiate both the stem telescoping and handle folding operations through pre-established mechanical linkages. When the user activates the one-button trigger, both the locking mechanism and the first limiting member are engaged at the same time, ensuring synchronized action without requiring complex sequential control.
Solution Approach 2:
The patent combines the control functions for stem telescoping and handle folding into a single driving mechanism that operates both subsystems simultaneously. This merging of control functions enables one-button triggering that activates both folding operations at once, improving productivity while managing complexity through functional integration.
Data Source
AI summary
A stem assembly and an electric vehicle are provided. The stem assembly includes: a stem telescoping mechanism including a first hollow tube, a second hollow tube, and a locking mechanism, the locking mechanism having a locked state and an movable state; a handle folding mechanism arranged to the stem telescoping mechanism, the handle folding mechanism including a handle assembly and a first limiting member, the first limiting member being movably arranged, and having a first limiting position and a first evading position; and a driving mechanism connected to both the locking mechanism and the first limiting member, and configured to be operated to control the stem telescoping mechanism and the handle folding mechanism to synchronously move.