Camera Extending Device Load Bearing Mechanism
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Solution Overview
Problem
The screw-and-nut type transmission components in prior art camera extending and retracting devices for mobile phones suffer from low transmission efficiency and failure due to their small dimensions and weak strengths, leading to sticking or loosening issues.
Innovation Solution
A camera extending and retracting device with a load bearing mechanism comprising a bearing washer, seat rings, holders, and balls that bear the axial force of the screw, combined with a planetary reducer and electric motor for reliable operation, allowing the camera module to extend and retract smoothly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the screw-and-nut transmission type is adopted to drive the camera extending and retracting movement, then the transmission mechanism can be implemented, but the small dimensions and weak strength of the components cause the screw to be stuck or loosen, affecting transmission efficiency and reliability
Solution Approach 1:
The transmission system is segmented into distinct functional components: the screw mechanism for motion conversion, the load bearing mechanism with bearing washer and seat rings for force support, and the guide rod for motion guidance. This segmentation allows each component to be optimized for its specific function, with the load bearing mechanism specifically designed to handle axial forces and prevent screw failure.
Solution Approach 2:
The bearing washer acts as an intermediary element between the screw and the support base, transferring and distributing the axial load. The seat rings and holders serve as intermediary structures that support the balls and bearing washer, providing a robust load path that prevents the screw from bearing excessive direct loads that would cause sticking or loosening.
2Area of stationary object
If the display screen proportion is increased, then the aesthetic appearance and screen-to-body ratio are improved, but the space on the periphery of the mobile phone for installing the camera is further decreased
Solution Approach 1:
The camera module is moved from the traditional lateral perimeter position to the vertical dimension, extending through the display screen from the back side. This dimensional change allows the camera to utilize the thickness dimension of the phone rather than the perimeter area, enabling full display screen coverage while accommodating the camera mechanism within the phone's depth.
Solution Approach 2:
The camera module is nested within the phone housing, extending through the display screen when needed and retracting to the back side when not in use. The load bearing mechanism and support structures are nested within the available space, with the bearing washer and seat rings arranged to minimize space requirements while providing adequate support.
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 solution enhances the bearing strength of the screw and nut, preventing damage or sticking, ensuring stable and reliable transmission, and enabling the camera module to be installed on the back side of the display screen, thus improving the display proportion of the mobile phone.
Implementation Method 1
The load bearing mechanism comprises: a bearing washer, two seat rings, two holders, and balls. The bearing washer is arranged between the two seat rings, each of the two holders is arranged between each of the two seat rings and the bearing washer, and the balls are embedded in the two holders.
Data Source
AI summary
A camera extending and retracting device, including: a support base configured to be mounted inside a housing of a mobile phone; a screw movably arranged on the support base; a drive unit in connection with one end of the screw; a nut arranged on the screw; a push block mounted on the nut and configured to connect with the camera module of the mobile phone. The other end of the screw is provided with a load bearing mechanism configured to bear an axial force of the screw, and the load bearing mechanism is mounted on the support base. A mobile phone, includes: a housing, a camera module arranged in the housing, and a display screen arranged on the housing, and the above camera extending and retracting device.