Filter frame

By using a limiting block and notch misalignment design and a multi-magnet ring connection, the problem of filter lens connection being prone to detachment is solved, achieving a stable connection and ensuring the normal use of the filter.

CN224287322UActive Publication Date: 2026-05-26HUIZHOU XINNUO PRECISION OPTICS CO LTD
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Patent Information

Application Number
CN202522038396.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-09-23
Publication Date
2026-05-26
Estimated Expiration
2035-09-23

AI Technical Summary

Technical Problem

Existing filter lens connection structures are prone to detachment, affecting the performance and potentially damaging the lenses. Snap-fit ​​structures are easily worn and loosened, and magnetic connections are prone to detachment due to magnetic field attenuation.

Method used

The first and second frames are magnetically connected. Through the misalignment design of the limiting block and the notch, combined with the connection of multiple magnets and rings, the connection is strengthened and the detachment is prevented.

Benefits of technology

It improves the stability of the filter connection, prevents the lens from falling and getting damaged, and ensures normal use.

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Abstract

The utility model discloses a filter frame which comprises a first frame body and a second frame body which are connected in a magnetic attraction mode, the first frame body is provided with a first containing groove and a notch communicated with the first containing groove, the outer surface of the second frame body is provided with a limiting block, one side of the second frame body is arranged in the first containing groove, and the limiting block is matched with the notch. After the limiting block enters the first containing groove from the notch, the first frame body and the second frame body rotate relatively, so that the limiting block and the notch are staggered, the limiting block cannot be separated from the interior of the first containing groove, and even if the first frame body and the second frame body are not firmly clamped or magnetically connected, the first frame body and the second frame body can still be connected; the problem of falling off is solved, meanwhile, the normal use effect of the filter is guaranteed, and the problem that the lens falls off and is damaged is also avoided.
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