Bicycle Pedal Rotating Connection Seat Locking Mechanism
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Solution Overview
Problem
Conventional bicycle pedals for mountain bikes have a complex design and a smaller connection seat size compared to road bikes, which complicates the locking mechanism and quick adjustment of the shoe fastener.
Innovation Solution
A bicycle pedal design featuring a rotating connection seat with two retaining sets, an engagement block, a fitting sleeve, a fixing column, and a torsion spring, allowing the connection seat and retaining sets to rotate within a predetermined range for easy locking with a shoe fastener, utilizing a frame with specific orifices, trenches, and protrusions to limit rotation and secure the pedal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional locking mechanism is used in the bicycle pedal, then the connection seat can be secured to the shoe fastener, but the locking process becomes complicated and time-consuming
Solution Approach 1:
The connection seat is designed to rotate dynamically within a predetermined range (15-30 degrees) relative to the frame, allowing the retaining sets to sweep through an arc that naturally engages with the shoe fastener. This dynamic rotation simplifies the locking operation to a single rotational motion while maintaining secure engagement.
Solution Approach 2:
The retaining sets are pre-positioned on the connection seat at specific angles and orientations before the locking action occurs. When the connection seat rotates, these pre-positioned retaining sets automatically align and engage with the shoe fastener, eliminating the need for complex alignment procedures during the locking process.
2Volume of moving object
If the connection seat size is reduced for mountain bike pedals, then the pedal becomes more compact, but the locking mechanism becomes more complex
Solution Approach 1:
By enabling the connection seat to rotate within a predetermined angular range, the design maximizes the functional capability of a compact structure. The rotational motion allows the small connection seat to present different orientations of its retaining sets, achieving effective locking without requiring a larger physical footprint.
Solution Approach 2:
The invention changes the operational parameter from linear movement to rotational movement. This parameter change allows the compact connection seat to achieve the necessary engagement geometry through rotation rather than requiring a larger size with complex internal locking mechanisms.
3Productivity
If the connection seat is fixed in position, then the structure is simple, but the shoe fastener cannot be quickly locked and unlocked
Solution Approach 1:
The connection seat transitions from a fixed position to a dynamically rotatable position within a predetermined range. This dynamic capability allows the retaining sets to quickly sweep through the engagement zone and lock with the shoe fastener in a single rotational motion, significantly improving locking speed while maintaining structural simplicity.
Solution Approach 2:
The connection seat is segmented from the frame through the rotating joint, allowing independent motion of the connection seat relative to the frame. This segmentation enables the quick locking action without requiring the entire pedal structure to be complex, as only the connection seat needs rotational capability.
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
The design simplifies the locking mechanism, allowing for quick and secure engagement of the shoe with the pedal, enhancing ease of use and stability by limiting rotation within a predetermined range, thus addressing the complexity and size issues of conventional pedals.
Implementation Method 1
a torsion spring (60) which pushes the connection seat (20) and the two retaining sets (21)
Data Source
AI summary
A bicycle pedal contains: a frame, a connection seat, an engagement block, a fitting sleeve, a fixing column, and a torsion spring. The frame includes a first orifice, a second orifice, and a trench. The connection seat includes two retaining sets, a circular tube, and two troughs. The engagement block is engaged in the trench, and the fitting sleeve is fitted with the first orifice. The fixing column is connected with a bearing and a washer and is screwed with a screw nut by using a threaded section of the fixing column. The torsion spring includes a first extending segment and a second extending segment, and the engagement block includes two shoulders facing the connection seat. Furthermore, the connection seat includes multiple protrusions facing and mating with the two shoulders so as to limit a rotation of the connection seat and the two retaining sets in the frame.