Snap-In Display Frame Assembly for Universal PCB Layouts
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Solution Overview
Problem
Existing display devices for household appliances are difficult to assemble universally in a simple and cost-effective manner, requiring individual circuit boards for each design and arrangement of electronic displays.
Innovation Solution
A display device with a holding frame that has a latching device to securely attach electronic displays to a printed circuit board, allowing for pre-assembly of displays away from the production line and easy assembly on the appliance, using a uniform printed circuit board for different devices with varying display configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If individual circuit boards are used for each design and arrangement of electronic displays, then the display device can be customized for different configurations, but the assembly process becomes complex and costly
Solution Approach 1:
The circuit board is segmented into multiple identical mounting areas, each capable of accommodating an electronic display. The board is divided into compartments with standardized mounting structures, allowing different combinations of displays to be installed on the same board without requiring custom designs for each configuration.
Solution Approach 2:
A single universal circuit board design is created that can accommodate multiple different arrangements and numbers of electronic displays. The board includes standardized mounting areas, common connection terminals, and uniform structural elements that allow it to serve multiple display configurations, eliminating the need for individual custom circuit boards for each design.
2Manufacturing precision
If individual circuit boards are manufactured for each display arrangement, then precise fitting is achieved, but production costs increase
Solution Approach 1:
Mounting holes, connection terminals, and structural features are pre-positioned on the universal circuit board during manufacturing. This preliminary placement of critical features allows for precise display mounting while using a standardized board design that can be mass-produced, reducing per-unit costs compared to custom-made boards.
Solution Approach 2:
The circuit board design uses standardized parameters for mounting hole positions, connection terminal locations, and structural dimensions. By maintaining consistent parameters across all universal board designs, manufacturing precision is ensured through standardized production processes while enabling cost-effective mass production of identical boards for different display configurations.
3Ease of operation
If manual assembly methods are used for display devices, then flexibility in assembly is maintained, but assembly time and labor costs increase
Solution Approach 1:
The display assembly process is segmented into distinct steps: inserting the display into the holding frame, securing it with fastening elements, and connecting electrical terminals. This segmentation allows the assembly to be performed manually with flexibility while also enabling automated assembly machines to efficiently execute each standardized step, thereby increasing productivity without sacrificing adaptability.
Solution Approach 2:
A holding frame structure serves as an intermediary component between the circuit board and the electronic display. This holding frame includes pre-positioned mounting features and connection points that guide the assembly process, making it easier to assemble manually while also facilitating automated assembly through standardized interfaces and alignment features.
Data Source
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AI summary
The invention relates to a display device (4), comprising at least one electronic display (2), a printed circuit board (5), on which the at least one electronic display (2) is electrically contacted, and a holding frame (7) fastened to the printed circuit board (5), into which holding frame the at least one electronic display (2) is inserted, the holding frame (7) comprising a snap-in arrangement (8) which is designed to fasten the holding frame (7) to the printed circuit board (5). The invention further relates to a household appliance (1) which comprises such a display device (4).