Displacement prevention mechanism for object detection device

The shift prevention mechanism in object detection devices addresses the issue of lens misalignment during adjustment by using a shaft to absorb forces, preventing direct load on the lens and ensuring accurate object detection.

JP2025038526APending Publication Date: 2025-03-19JAPAN RADIO CO LTD
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Patent Information

Application Number
JP2023145188
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Filing Date
2023-09-07
Publication Date
2025-03-19

AI Technical Summary

Technical Problem

In object detection devices, careless lens adjustment operations can apply excessive load to the lens, causing deflection and optical axis deviation, which interferes with the sensor and leads to shift issues.

Method used

A shift prevention mechanism is introduced, featuring a shaft that penetrates an opening hole in the lens adjustment unit, absorbing the force generated during lens adjustment and preventing direct load application to the lens. The mechanism includes a metal shaft with a resin collar to prevent wear and a gap setting that avoids interference with the sensor.

Benefits of technology

This solution effectively prevents lens misalignment and sensor misalignment by absorbing the load during lens adjustment, reducing the risk of optical axis deviation and ensuring accurate object detection.

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Abstract

To provide a displacement prevention mechanism for an object detection device that can prevent displacement of a lens occurring in adjustment of the lens.SOLUTION: Provided is a displacement prevention mechanism for an object detection device 1 comprising: a camera 2; a lens 3 attached to a front face of the camera 2; a dial 4 attached to a portion above the lens 3, for rotating the lens 3 to perform adjustment of the lens; a sensor 5 provided below the lens 3, for detecting an object; and a housing 6 accommodating the camera 2, lens 3, dial 4, and sensor 5. The displacement prevention mechanism for an object detection device comprises a shaft 42 that penetrates an opening hole 41 formed in the dial 4, and receives a force generated by operating the dial 4 to rotate the lens 3.SELECTED DRAWING: Figure 1
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