Camera Module Positive Locking Connection for Thermal Stability
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Solution Overview
Problem
Conventional camera modules experience connection loosening due to relaxation processes and thermally induced linear deformations, leading to a loss of housing closure or image sensor misalignment, resulting in unsharp images.
Innovation Solution
A method for producing a camera module with a positive locking connection using a connecting element like a tongue, sleeve, or pin that is deformed to create a pretensioned curled end, acting like a spring to maintain a secure connection over time, compensating for deformations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If screwed connection or adhesive connection is used to connect circuit board and cover part to housing part, then assembly is simple, but connection loosens over time due to relaxation processes and thermally induced linear deformations
Solution Approach 1:
The connecting element is designed with a dynamic spring effect that allows it to adapt to thermal expansions and relaxations. The elastic deformation of the connecting element enables it to maintain constant contact pressure with both parts, compensating for dimensional changes over time without requiring complex adjustment mechanisms.
Solution Approach 2:
The connecting element utilizes elastic deformation as a key parameter to maintain connection stability. By designing the connecting element with appropriate material properties and geometric parameters, it can undergo controlled elastic deformation to compensate for thermal effects and relaxation, thereby maintaining reliable connection over time.
2Ease of manufacture
If conventional connection methods are used, then manufacturing cost is low, but image sensor position changes leading to unsharp images
Solution Approach 1:
The dynamic spring effect of the connecting element continuously maintains optimal contact pressure on the image sensor, preventing position shifts caused by thermal expansion or material relaxation. This passive dynamic adjustment ensures long-term position accuracy without requiring active control systems.
Solution Approach 2:
The connecting element is pre-deformed during manufacturing to create an initial pretension force that compensates for future thermal and relaxation effects. This preliminary action ensures that the image sensor remains properly positioned even under varying operational conditions.
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 method ensures a permanently secure connection of the camera module parts, preventing loosening and maintaining image sharpness by compensating for relaxation and thermal deformations through the spring-like action of the curled connecting element.
Implementation Method 1
the latter is deformed not only plastically, but also elastically and thus acts like a spring
Implementation Method 2
thermally induced linear deformations
Implementation Method 3
the latter is deformed not only plastically
Data Source
AI summary
A method for producing a camera module having a first part, preferably a housing part, and a second part, preferably a circuit board or a cover part, in which the two parts are connected in positive locking fashion. The positive lock is produced in that a connecting element connected to the first part in the form of a tongue, sleeve or a pin is guided through an opening of the second part, the first part is brought to abut on the second part and subsequently the end of the connecting element protruding beyond the second part is curled in a deforming process so that the curled end abuts on the second part in a pretensioned manner. A camera module is also described.