Double-Use Nozzle Adapter for Bicycle Valves
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Solution Overview
Problem
Existing double-use nozzle adapters for bicycle tires are complex in structure and difficult to operate, requiring multiple steps and precise assembly to switch between Schrader and Presta valve modes, making them cumbersome and time-consuming to use.
Innovation Solution
A double-use nozzle adapter with a switch unit and needle unit, where a shifting member rotates to engage or release rigid retaining members, allowing easy connection to either a Schrader or Presta valve by simply rotating the shifting member, utilizing a main body with coaxial threaded holes and a vent, and a needle unit that moves between positions to accommodate different valve types.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the prior-art device uses two limit blocks and two push springs to enable switching between Schrader and Presta valves, then the switching function is achieved, but the structure becomes complicated and fabrication becomes time-consuming
Solution Approach 1:
The patent merges the functions of two separate limit blocks and two push springs into a single integrated switch unit. The switch unit includes a rotating body with limiting ends that perform both limiting and pushing functions simultaneously, eliminating the need for separate components and reducing structural complexity while maintaining the dual-valve switching capability.
Solution Approach 2:
The switch unit is designed as a multi-functional component that combines limiting, pushing, and switching operations into a single mechanism. The rotating body with its limiting ends can control the retaining rod's position and push the needle unit, serving multiple purposes that previously required separate components.
2Reliability
If the prior-art device uses two limit blocks and two push springs for mode switching, then the required pushing effect is achieved, but the fabrication process becomes time-consuming due to careful placement and additional processing
Solution Approach 1:
The patent combines multiple functions into the switch unit, which integrates the pushing and limiting actions into a single component. This eliminates the need for separate push springs and limit blocks, reducing the number of parts that need to be carefully placed and assembled, thereby significantly reducing fabrication time and improving ease of manufacture.
Solution Approach 2:
The patent extracts and eliminates unnecessary components (separate limit blocks and push springs) by incorporating their functions directly into the switch unit. This simplifies the assembly process and reduces the time required for careful placement during fabrication.
3Adaptability or versatility
If the prior-art device requires multiple操作步骤 to switch between Schrader and Presta valves, then the valve switching function is achieved, but the operation becomes difficult and cumbersome
Solution Approach 1:
The patent employs a dynamic rotating switch unit that can easily transition between positions to switch between Schrader and Presta valve modes. The rotating body with limiting ends can be simply rotated to change the position of the retaining rod, enabling quick and convenient mode switching without multiple complex操作步骤.
Solution Approach 2:
Instead of requiring multiple forward操作步骤 to switch modes, the patent uses a reversible rotating mechanism where the switch unit can be rotated in either direction to achieve mode switching. This inversion of the operational sequence simplifies the user interaction and makes the device more ease to operate.
Data Source
AI summary
A double-use nozzle adapter includes a main body, a switch unit, and a needle unit. The switch unit includes a shifting member and two rigid retaining members. The rigid retaining members are arranged between the shifting member and the main body. The shifting member shifts the rigid retaining member between a first position and a second position. The needle unit is slidably installed in the main body and includes a needle. In the first position, the shifting member drives the rigid retaining member to press against the needle, thereby preventing the needle from moving with respect to the main body and making the needle connectable to a Schrader valve. In the second position, the rigid retaining member moves between the shifting member and the main body, so as to allow the needle to move with respect to the main body and make the needle connectable to a Presta valve.