Snap-in Projection Device for Mobile Terminals
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Solution Overview
Problem
Conventional mobile terminals fail to meet the diverse requirements of users for projection functionality, as they either require constant connection to a projection device via a data line or are overly expensive when integrated with a projection unit, which is used infrequently.
Innovation Solution
A modular projection device with a snap-in structure that securely connects and disconnects from a mobile terminal, featuring a data interface and projection unit, allowing for adjustable projection angles and modes, including image and keyboard projection, without necessitating the mobile terminal to have a built-in projection function.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the projection unit is directly integrated into the mobile terminal, then the mobile terminal is provided with the projection function, but the mobile terminal is too expensive due to the projection unit
Solution Approach 1:
The projection device is separated from the mobile terminal into an independent external device. The mobile terminal only needs a data interface, while the projection unit exists as a separate device that can be connected when needed, reducing the base cost of the mobile terminal while maintaining projection capability.
Solution Approach 2:
The external projection device can serve multiple mobile terminals and potentially other devices with data interfaces. This multi-functional approach distributes the cost of the projection unit across multiple uses, making the solution more cost-effective than integrating it into each individual terminal.
2Adaptability or versatility
If the mobile terminal is connected to the projection device via a data line, then the projection function is provided, but it is impossible to meet the requirement of some users who want to use a projection function at any time and at any place
Solution Approach 1:
The projection device incorporates a rotation mechanism that allows the projection portion to dynamically adjust its inclination angle relative to the support portion. This dynamic adjustment capability enables the device to adapt to different usage scenarios and positions, meeting the requirement of using projection function at any time and at any place.
Solution Approach 2:
The rotation mechanism introduces an additional degree of freedom in the vertical dimension, allowing the projection portion to tilt at different angles. This dimensional adjustment provides flexibility in positioning the projection device for various viewing angles and environments.
3Adaptability or versatility
If the mobile terminal is connected to the projection device via a data line, then the projection function is provided, but the mobile terminal needs to be constantly connected to the projection device
Solution Approach 1:
The snap-in structure automatically performs the connection function when the mobile terminal is placed in the projection device. The structure itself provides the connection mechanism through slots and interfaces, eliminating the need for separate constant connection actions or complex connection management.
4Adaptability or versatility
If a snap-in structure is used to secure the mobile terminal to the projection device, then the projection device can be assembled with and separated from the mobile terminal, but the data interface needs to be movable to connect and disconnect
Solution Approach 1:
The data interface movement function is merged with the snap-in structure's assembly and separation actions. The same mechanical motion that secures or releases the mobile terminal also drives the data interface to connect or disconnect, combining multiple functions into a single structural mechanism.
Data Source
AI summary
A projection device includes a snap-in structure for securing a mobile terminal; a first data interface arranged on the device body and connected to a second data interface of the mobile terminal; and a projection unit secured on the device body and connected to the first data interface.