Light Component Fastening With Torque-Absorbing Intermediate Element
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Solution Overview
Problem
The precision adjustment of components in motor vehicle lights, such as reflectors and heat sinks, is compromised during screwing due to torque transmission, leading to potential distortions in the light image.
Innovation Solution
An arrangement featuring an intermediate torque-absorbing element that fixes the first component to the second component, allowing for precision adjustment while preventing torque transmission from the connecting element, using a screw or adhesive for secure attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a connecting element (screw) is used to fix the first component to the second component, then the components are securely connected, but torque is transmitted to the first component during screwing, causing rotation and compromising precision adjustment
Solution Approach 1:
A torque-absorbing intermediate element is introduced between the first component (reflector) and the head of the connecting element (screw). This intermediate element acts as a mediator that receives and absorbs the torque generated during screwing through its friction connection with the first component, while being firmly connected to the second component (heat sink). This prevents torque transmission to the first component, maintaining precision adjustment while achieving secure connection.
2Ease of manufacture
If the head of the connecting element contacts the first component directly, then the connection is established, but rotation of the first component occurs due to torque, requiring re-adjustment
Solution Approach 1:
The torque-absorbing intermediate element serves as an intermediary component between the screw head and the reflector. During assembly, the screw is inserted through the intermediate element, and the intermediate element's friction connection with the reflector absorbs rotational torque, preventing the reflector from rotating and maintaining light image precision while simplifying the assembly process.
3Strength
If friction connection between the intermediate element and the first component is increased to improve torque absorption, then torque absorption improves, but the intermediate element may become difficult to install or remove
Solution Approach 1:
The intermediate element features a friction connection surface with specific local properties (friction coefficient, surface area) optimized for torque absorption. The connection geometry and material selection provide sufficient friction for torque absorption during operation while allowing the intermediate element to be installed and removed with reasonable effort, balancing torque absorption capability with installation ease.
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
Maintains precision adjustment of components during assembly, ensuring a stable and precise light image without distortion, facilitating the production of luminaires with accurate light patterns.
Implementation Method 1
the intermediate element can absorb a torque emanating from the connecting element and derive it via the shaped element to the second component
Data Source
Figure 1
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Figure 6
AI summary
The invention relates to an arrangement (12) with a first component (14) of the arrangement (12) being fixed to a second component (16) of the arrangement (12) along a connecting axis (V) by means of a connecting element (24) of the arrangement (12), wherein an intermediate element (22) is arranged between the first component (14) and a head (26) of the connecting element (24) designed as a stop. It is characterized in that the intermediate element (22) can be fixed or is fixed in a rotationally fixed position relative to the second component (16) with respect to rotation about the connecting axis (V) by means of at least one form element (18) independent of the first component (14).