Ultrasonic Probe Flexible Board Bending Guide
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Solution Overview
Problem
Existing ultrasonic device units face challenges in miniaturization due to issues with flexible printed wiring board bending, leading to difficulties in fitting within limited spaces and potential interconnection breakages.
Innovation Solution
The ultrasonic device unit incorporates a flexible printed wiring board with a bending part and a reinforcing plate featuring a bending guide with a circular arc surface, preventing tilted bending and ensuring proper alignment, along with reference corner parts and slits to facilitate compact configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the flexible board is bent to overlap the ultrasonic device, then the size of the flexible board coincides with the ultrasonic device, but when the bending direction is tilted, part of the flexible board projects outside and cannot be stored in limited space
Solution Approach 1:
A bending guide part is introduced as an intermediary component between the flexible board and the ultrasonic device. The bending guide part includes a guide surface that contacts and guides the end edge of the bending part, ensuring the flexible board bends in the correct direction and prevents tilted bending that would cause projection outside the device boundaries.
2Ease of manufacture
If the flexible board is bent without guidance, then it can be connected to the ultrasonic device, but the interconnections in the bending part may break
Solution Approach 1:
The bending guide part serves as a mediator that provides a controlled bending path for the flexible board. The guide surface ensures the bending part follows a predetermined trajectory, preventing excessive stress concentration and interconnection breakage during the bending process.
Solution Approach 2:
The bending guide part is pre-configured with a guide surface that defines the correct bending path before the flexible board is installed. This preliminary guidance structure prevents improper bending and potential interconnection damage during assembly and operation.
3Adaptability or versatility
If the bending part is curved without guidance, then connection is possible, but it curves in a tilted direction causing parts to project outside
Solution Approach 1:
The bending guide part acts as an intermediary that constrains the bending flexibility of the flexible board to follow a predetermined path. The guide surface maintains proper alignment by contacting the end edge of the bending part, preventing tilted curvature and ensuring the flexible board remains within the device boundaries.
Data Source
AI summary
An ultrasonic device unit includes an ultrasonic device having a device-side terminal, a reinforcing plate having a support adapted to support the ultrasonic device, and a flexible printed wiring board to be connected to the ultrasonic device, the flexible printed wiring board is provided with a connection to be connected to the device-side terminal, and a bend continuous with the connection, extending away from the ultrasonic device, and having an end edge parallel to an extending direction, and the reinforcing plate is provided with a bending guide provided to a first side parallel to a first direction crossing the extending direction, having a circular arc curved surface convex away from the support, and opposed to the bend, and a guide surface disposed at an end in the first direction of the bending guide, and adapted to guide the end edge of the bend.