HINGE HAVING THE FUNCTION OF AUTO-SHUTTING

Abstract

A hinge having the function of auto-shutting, it is formed on a rotation axle thereof a pair of engaging structures being of different sizes, being composed of a pair of protrusions and a pair of detents as well as being at mutual symmetrical positions separated 180° away on contact surfaces of a positioning device including a positioning block and a positioning piece, in order that a foldable electronic product connected with the hinge is able to shut automatically when in folding. And a pair of protruding stubs and recess holes are provided at the two lateral sides of the smaller protrusion and the smaller detent of the engaging structures, in order to prevent the smaller protrusion from falling into the larger detent when the foldable electronic product is opened.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view of the present invention after assembling;

FIG. 2 is an anatomic perspective view of the present invention;

FIG. 3 is a plane view of the present invention;

FIG. 4 is a sectional view taken from a sectional line 4-4 in FIG. 3;

FIG. 5 is an enlarged perspective view showing a positioning block and a positioning piece of the present invention;

FIG. 6 is a plane view of the positioning block of the present invention;

FIG. 7 is a plane view of the positioning piece of the present invention;

FIG. 8 is an anatomic perspective view of a second embodiment of the present invention;

FIG. 9 is an anatomic perspective view of a third embodiment of the present invention;

FIG. 10 is an anatomic perspective view of a fourth embodiment of the present invention.

Claims

1. A hinge having a function of auto-shutting used between a display screen and a main body of a foldable electronic product, said hinge comprises: a base fixed in said foldable electronic product;a bracing structure fixedly connected with a display screen of said foldable electronic product;a rotation axle having a connecting part connected with said bracing structure and a shank extending through a central circular hole of said base;a spring washer set provided on said shank of said rotation axle to provide pressing force; anda positioning device provided on said shank of said rotation axle, being composed of a positioning block connected with said base and not rotated together with said rotation axle; and a positioning piece rotated together with said rotation axle; contact surfaces for said positioning block and said positioning piece being provided with a pair of protruding and recessed engaging structures of different sizes mutual symmetrical by position and composed of a pair of protrusions and a pair of detents, said hinge thus having said function of auto-shutting during folding of said foldable electronic product in connection with said hinge; a pair of protruding stubs and recess holes are provided at two lateral sides respectively on said positioning block and said positioning piece of said smaller one of said two engaging structures, said protruding stubs and recess holes are mutually engaged when said protrusions and said detents are mutually engaged; centers of said protruding stubs has a distance to a central through hole of said positioning piece which is not larger than a distance from an inner edge of a larger one of said protrusions to said center of said central through hole, this prevents a smaller one of said protrusions from falling into a larger one of said detents during opening said foldable electronic product.

2. The hinge having a function of auto-shutting as claimed in claim 1, wherein said protrusions of said engaging structures are provided on said contact surface for said positioning piece, while said detents are provided on said contact surface for said positioning block.

3. The hinge having a function of auto-shutting as claimed in claim 1, wherein said positioning block is integrally connected with said base, a diameter of a central circular hole of said positioning block is larger than that of said shank of said rotation axle, so that said positioning block is not rotated together with said rotation axle.

4. The hinge having a function of auto-shutting as claimed in claim 1, wherein said positioning block is separated from said base, said base has a vertical part extending therethrough said shank of said rotation axle, said positioning block is provided on one of said contact surfaces in contact with said vertical part of said base with three protruding stubs, while said vertical part of said base is correspondingly provided with three recess holes, by engaging of said protruding stubs with said recess holes, said positioning block is fixed on said vertical part of said base.

5. The hinge having a function of auto-shutting as claimed in claim 1, wherein said positioning block is an “L” shaped structure having an engaging seat therebeneath, said engaging seat is extended into a rectangular hole on a vertical part of said base.

6. The hinge having a function of auto-shutting as claimed in claim 5, wherein another set of washers are provided between said vertical part of said base and said positioning block.

7. The hinge having a function of auto-shutting as claimed in claim 5, wherein both left and right sides of said positioning block each has dents and recess holes, and both said left and right sides of said positioning block are provided each with a positioning piece.

8. The hinge having a function of auto-shutting as claimed in claim 7, wherein another set of washers are provided between said vertical part and said positioning piece near said vertical part.

9. The hinge having a function of auto-shutting as claimed in claim 1, wherein a threaded portion is provided on a tailing end of said shank and is screw connected with a nut, a positioning washer is provided between said nut and a spring washer set.

10. The hinge having a function of auto-shutting as claimed in claim 1, wherein a top and a bottom of said rotation axle are cut to form planes, said central through hole of said positioning piece has a shape in coincidence with a shape of a transverse sectional area of said shank of said rotation axle for said shank to extend therethrough, in order that said positioning piece is rotated together with said rotation axle.

11. The hinge having a function of auto-shutting as claimed in claim 1, wherein a middle wheel is provided between said shank and said connecting part of said rotation axle, washers are provided between said middle wheel and said positioning block.