Rotatable Vehicular Lamp Assembly Plate Spring Design
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Solution Overview
Problem
Conventional rotatable vehicular lamp assemblies have complex constructions, making assembly and manufacturing processes difficult and costly.
Innovation Solution
A simplified rotatable vehicular lamp assembly design featuring a support frame with a horizontal plate, a lighting unit with a pivot rod and annular non-flat plate springs providing rotational resistance, and a drive unit that engages the pivot rod, allowing for easy assembly and vibration absorption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional rotatable vehicular lamp assembly uses multiple vibration-absorbing elements and separate holder plates connected pivotally to main plates, then vibration absorption and rotational movement are achieved, but the construction becomes complicated and assembly/manufacturing becomes troublesome
Solution Approach 1:
The patent combines multiple functions into a single integrated pivot rod structure. The pivot rod integrates the rotational pivot function, vibration absorption (through plate springs), and positioning features (shoulder part and annular groove) that were previously distributed across multiple separate components including holder plates, main plates, and separate vibration-absorbing elements. This merging simplifies the construction while maintaining vibration absorption capability.
Solution Approach 2:
The pivot rod serves multiple functions simultaneously: it acts as the rotational axis, incorporates vibration-absorbing plate springs, provides positioning through the shoulder part and annular groove, and enables engagement with the drive unit. This multi-functionality eliminates the need for separate holder plates and vibration-absorbing elements, reducing construction complexity while maintaining all necessary functions.
2Ease of operation
If a conventional rotatable vehicular lamp assembly uses multiple separate components including top and bottom holder plates and main plates, then rotational movement is achieved, but assembly and manufacturing become troublesome
Solution Approach 1:
The patent merges the functions of top and bottom holder plates with the main plates into a single integrated pivot rod structure. The pivot rod includes the thick part, neck part, shoulder part, and annular groove all in one component, eliminating the need for separate holder plates and simplifying assembly while maintaining rotational movement capability.
3Ease of manufacture
If a simplified design with fewer components is used, then assembly and manufacturing become easier, but vibration absorption and rotational stability may be compromised
Solution Approach 1:
The patent uses non-flat plate springs with specific geometric parameters (thickness, curvature, mounting positions) to achieve the required vibration absorption and rotational stability. The plate springs are designed with optimized dimensions and shapes to provide the necessary elastic restoring forces while maintaining a simplified single-component structure.
Solution Approach 2:
The pivot rod is constructed as a composite structure combining rigid portions (thick part, neck part, shoulder part, annular groove) with flexible vibration-absorbing elements (plate springs). This composite design integrates both structural stability and vibration absorption capabilities within a single component, achieving reliability while simplifying assembly.
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 assembly and manufacturing, reduces costs, and ensures stable rotation and vibration absorption of the lamp body relative to the support frame.
Implementation Method 1
An annular non-flat plate spring is disposed around the neck part between the shoulder part and the support plate
Implementation Method 2
The first plate spring is disposed around the neck part between the shoulder part and the top face 311 of the support plate 31, so as to provide a rotational resistance between the thick part 421 of the pivot rod 42 and the top face 311 of the support plate 31
Data Source
Figure 1
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AI summary
A rotatable vehicular lamp assembly includes a support frame (3) adapted to be connected to a vehicle and having a horizontal support plate (31) with a through hole (310), a lighting unit (4) including a lamp body (41), a pivot rod (42) having a thick part (421) connected to the lamp body (41) and disposed above the support plate (31), a neck part (422) extending downwardly from the thick part (421) and extending rotatably through the through hole (310), and a shoulder part (423) disposed between the thick part (421) and the neck part (422) above the support plate (31), and an annular retaining element (43) sleeved on the neck part (422) below the support plate (31). A drive unit (5) is disposed below the support plate (31), and engages the neck part (422). An annular non-flat plate spring (6) is disposed around the neck part (422) between the shoulder part (423) and the support plate (31).