Miniature microphone, protection frame thereof and method for manufacturing the same

A protection frame for a miniature microphone comprising a cavity in the central portion the protection frame and being in the form of a cylinder with both ends opened, wherein one or more components are installed inside the cavity;

• the outer side of the protection frame forms a body portion, a first metal shielding layer is provided on the inner surface of the body portion, and an insulating mechanism is provided on the inner side of the first metal shielding layer, which enables the one or more components to be electrically insulated from the first metal shielding layer;
• wherein the insulating mechanism is an insulating layer made of resin materials or solder resists and formed on the whole inner surface of the first metal shielding layer.

A protection frame for a miniature microphone comprising a cavity in the central portion the protection frame and being in the form of a cylinder with both ends opened, wherein one or more components are installed inside the cavity;

• the outer side of the protection frame forms a body portion, a first metal shielding layer is provided on the inner surface of the body portion, and an insulating mechanism is provided on the inner side of the first metal shielding layer, which enables the one or more components to be electrically insulated from the first metal shielding layer;
• wherein the insulating mechanism comprises one or more arc-like protruding portions provided in the corners of the cavity, said protruding portions protruding towards the cavity and extending along the height direction of the protection frame;
• said protection frame further comprising one or more ground portions in the body portion between the corners of the protection frame and the corresponding protruding portions, said ground portions being configured along the height direction of the protection frame and run through the protection frame.