Magnetic ratchet hinge structure

Abstract

The invention provides a magnetic ratchet hinge structure. The structure comprises a first hinge and a second hinge. The first hinge and the second hinge are connected by a rotating shaft. The first hinge is a relative fixed part aimed at the rotating shaft. The second hinge rotates with the rotating shaft. The first hinge is provided with a pawl. The pawl is hinged with the first hinge. The rotating shaft is provided with a ratchet wheel. Distribution range of ratchet on the ratchet wheel is 1/6 to 1/3 of ratchet wheel circumference. The ratchet wheel is provided with a pushing plate. Lengthof the pushing plate is larger than tooth length of the ratchet. The first hinge is provided with a permanent magnet. The tail part of the pawl is provided with a concentrating flux plate. When the ratchet wheel rotates to one direction and makes the pawl separate from the ratchet, one of the pushing plates pushes the pawl, to make the concentrating flux plate on the pawl get close to the permanent magnet and attract the permanent magnet. A slow recovery piece is arranged between the pawl and the ratchet wheel. The structure is mute, and can fix open-close positions of a door or a window undera certain angle, and the structure can smoothly fold the hinges in an opposite direction after the door or the window is opened to an extreme state.

Description

technical field [0001] The invention relates to the field of hinges, in particular to a magnetic ratchet hinge structure. Background technique [0002] When the doors and windows are opened, the stability of the frame will be poor due to the hinges, especially when they are blown by strong winds, the doors and windows will automatically swing and even lock automatically. [0003] In order to solve the above problems, some people have proposed the structure of the ratchet hinge, such as the five-speed hinge of the patent No. CN201020277002.2, but it is difficult to perfectly match the cam and the ratchet of this hinge, so the jamming is still relatively serious. Especially when the hinge rotates, there is an abnormal sound when the ratchet beats every step, which fails to achieve a smooth opening and closing effect. Contents of the invention [0004] The object of the present invention is to provide a magnetic ratchet hinge structure with a slow recovery effect to solve th...

AI Technical Summary

Problems solved by technology

[0002] When the doors and windows are opened, the stability of the frame will be poor due to the hinges, especially if they are blown by strong winds, the doors and windows will automatically swing and even lock automatically

[0003] In order to solve the above problems, some people have proposed the structure of the ratchet hinge, such a

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