Sunshade Latch Unit Pin Member Assembly Mechanism
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Solution Overview
Problem
Conventional sunshade assembly to mounting seats is inconvenient and time-consuming due to complex engagement mechanisms.
Innovation Solution
A sunshade design featuring a latch unit with a pin member, biasing member, and plug that facilitates easy assembly by using a coil spring to bias the pin member for alignment and insertion into mounting holes, simplifying the assembly process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional pin unit and torque unit assembly mechanism is used, then the sunshade can be mounted to mounting seats, but the assembly procedure becomes complex and time-consuming
Solution Approach 1:
The patent combines the pin unit and torque unit into a single integrated assembly where the pin unit is formed with a head portion and a shaft portion that are integral to each other. This merging eliminates the need for separate assembly steps for these components, directly reducing assembly complexity while maintaining mounting functionality.
Solution Approach 2:
The pin unit is pre-formed with specific geometric features including a head portion with a first diameter and a shaft portion with a second diameter, where the head portion is larger than the shaft portion. This preliminary formation of complex geometries during manufacturing rather than during assembly simplifies the assembly process by eliminating the need for complex alignment and positioning steps.
2Productivity
If multiple separate components are used for mounting, then the sunshade can be securely mounted, but the assembly time increases
Solution Approach 1:
The patent merges multiple functional components into the pin unit structure, where the head portion provides mounting engagement and the shaft portion provides structural connection. This integration reduces the number of separate components that need to be assembled, directly increasing assembly speed and reducing time loss.
Solution Approach 2:
The pin unit is segmented into distinct functional portions (head portion and shaft portion) with different diameters, allowing each segment to perform its specific function while being manufactured as a single piece. This segmentation enables simplified assembly compared to assembling multiple separate components.
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 sunshade assembly is significantly streamlined, making it easier and faster to mount the sunshade to the mounting seats, while also simplifying the mounting seat configuration.
Implementation Method 1
a biasing member that is disposed in the roller for biasing the shoulder portion of the pin member to abut resiliently against the plug
Data Source
AI summary
A sunshade includes a roller, a screen wound on the roller, a torque unit, and a latch unit. The torque unit is mounted in the roller, extends outwardly of the roller, and is disposed for urging movement of the screen to a wound state. The latch unit includes a plug disposed in the roller and formed with a pin hole, a pin member, and a biasing member disposed in the roller. The pin member has a main portion (521) extending movably through the pin hole, a diameter-enlarged portion disposed in the roller and connected fixedly to the main portion, and a shoulder portion formed between the main portion and the diameter-enlarged portion and biased by the biasing member to abut resiliently against the plug.