Dual-Thread Retainer for Head-Up Display Positioning
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional retainers for display devices in motor vehicles, particularly for head-up displays, lack stability and adjustability, which is crucial for precise positioning and operation under varying conditions.
Innovation Solution
A retainer with an adjustable bearing device featuring a setting element with two coupling segments having different thread pitches, allowing for precise fine adjustment of the display device's position, ensuring stable and accurate positioning through a combination of direct and indirect coupling mechanisms and rotation locks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional retainers are used to support display devices, then the structure is simple, but the positioning stability and adjustability are insufficient
Solution Approach 1:
The retainer is divided into multiple functional segments: a support body for mounting, an adjustable bearing device for positioning, and a dual-thread setting element for fine adjustment. Each segment performs a specific function, allowing the overall system to achieve high positioning stability without excessive complexity in any single component.
Solution Approach 2:
The bearing device is designed to be adjustable rather than fixed, allowing dynamic repositioning of the display device. The setting element with different thread pitches enables both coarse and fine adjustments, providing dynamic adaptability while maintaining stable positioning once adjusted.
2Measurement precision
If a single thread pitch is used in the adjusting device, then the structure is simple, but the fine adjustment capability is insufficient
Solution Approach 1:
Different sections of the setting element have different thread pitches: a first thread segment with a coarser pitch for larger adjustments and a second thread segment with a finer pitch for precise fine-tuning. This local differentiation of thread properties allows the single setting element to provide both coarse and fine adjustment capabilities without requiring multiple separate mechanisms.
Solution Approach 2:
The thread pitch parameter is changed along the length of the setting element, transitioning from a first pitch value in the first thread segment to a second pitch value in the second thread segment. This parameter variation enables the mechanism to provide different adjustment resolutions in different operational phases, achieving high positioning precision while maintaining structural simplicity.
3Adaptability or versatility
If the bearing device position is fixed relative to the support, then the structure is stable, but the adjustability for fine setting is lost
Solution Approach 1:
The bearing device is designed with adjustable positioning capability through the setting element, allowing the display device to be repositioned as needed. The threaded connection mechanisms provide controlled movement while maintaining firm holding capability once positioned, thus achieving both adaptability and structural stability.
Solution Approach 2:
The setting element acts as an intermediary mechanism between the fixed support structure and the movable bearing device. It translates rotational motion into precise linear adjustments of the bearing device position, enabling fine setting while maintaining a stable overall structure through the threaded engagement.
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 solution provides a stable and adjustable support system for display devices, enabling precise positioning and orientation, ensuring reliable operation under different vehicle conditions and reducing the risk of misalignment or instability.
Implementation Method 1
The first coupling segment is circumferentially provided with a first thread segment, and with a second coupling segment for coupling to the support, wherein the second coupling segment is circumferentially provided with a second thread segment. The two thread segments have different thread pitches.
Data Source
AI summary
The invention relates to a retainer (1) for a display device (3), which display device is to be retained in a motor vehicle, in particular in a motor-vehicle-side fitting, and in particular forms a part of a head-up display. The retainer comprises at least one support (5, 6) having at least one bearing device (8) for supporting the display device (3). The bearing device (8) can be positionally adjusted in relation to the support (5, 6) by means of an adjusting device (11) arranged on the support side. The adjusting device (11) has a setting element (12) that can be positionally adjusted in relation to the support (5, 6). The setting element has a first coupling segment (13) for coupling to the bearing device (8), wherein the first coupling segment (13) is provided with a first thread segment (16) on the circumference of the first coupling segment, and a second coupling segment (14) for coupling to the support (5, 6), wherein the second coupling segment (14) is provided with a second thread segment (17) on the circumference of the second coupling segment, wherein the two thread segments (17, 18) have different thread pitches.