A hinge for a notebook computer is composed of a first seat, a second seat and an axle. The first seat is mounted on a monitor, and the second seat is mounted on a body. The axle is securely mounted on the first seat and pivotally mounted on the second seat. Two sleeves are provided outside the axle
A hinge for a notebook computer is composed of a first seat, a second seat and an axle. The first seat is mounted on a monitor, and the second seat is mounted on a body. The axle is securely mounted on the first seat and pivotally mounted on the second seat. Two sleeves are provided outside the axle and engaged with each other in a closed status. The first sleeve has two lugs received in a channel defined in the second sleeve. The second sleeve has two protrusive portions respectively formed at two sides of the channel, and two cambered surfaces formed between the channel and the protrusive portion. When a user lowers the monitor to a position that the lugs enter into the cambered surfaces, the monitor can automatically descend under the effect of gravity and the force of a resilient member.
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1. A hinge for a notebook computer comprising:a first seat ( 20 ) having a first upright portion ( 21 ) and a first lateral portion ( 22 ) mounted on a monitor of the notebook computer;a second seat ( 30 ) formed with a second upright portion ( 31 ) and a second lateral portion ( 32 ) extending ther
1. A hinge for a notebook computer comprising:a first seat ( 20 ) having a first upright portion ( 21 ) and a first lateral portion ( 22 ) mounted on a monitor of the notebook computer;a second seat ( 30 ) formed with a second upright portion ( 31 ) and a second lateral portion ( 32 ) extending therefrom, wherein the second upright portion ( 31 ) has a circular opening ( 310 ) defined therethrough, an aperture ( 313 ) defined beneath the circular opening ( 310 ), a notch ( 312 ) defined above the circular opening ( 310 ), and an arcuate notch ( 311 ) defined peripherally thereon; the second lateral portion ( 32 ) being mounted on a body of the notebook computer; andan axle ( 10 ) having a shaft ( 11 ) formed with a large part ( 110 ) securely mounted on the first seat ( 20 ) and a small part ( 112 ) rotatably extending through the circular opening ( 310 ) of the second seat ( 30 ), a nut ( 18 ) engaged with the shaft ( 11 ) at an end of the small part ( 112 ), a positioning disk ( 12 ) provided between the large part ( 110 ) and the second upright portion ( 31 ), a finger ( 121 ) formed at an outer periphery of the positioning disk ( 12 ) and engaging a first portion of the notch ( 312 ) of the second upright portion ( 31 ) when the monitor abuts the body of the computer, two washers ( 13 ) provided between the positioning disk ( 12 ) and the second upright portion ( 13 ), a first sleeve ( 14 ) provided between the second upright portion ( 31 ) and the nut ( 18 ) and having a first lug ( 141 ) and a second lug ( 142 ) formed at a side facing the second upright portion ( 31 ) and engaging respectively a second portion of the notch ( 312 ) and the aperture ( 313 ), and a third lug ( 143 ) and a fourth lug ( 144 ) formed at a side opposite to the second upright portion ( 31 ), a second sleeve ( 15 ) provided between the first sleeve ( 14 ) and the nut ( 18 ) and having a channel ( 151 ) diametrically defined at a side facing the first sleeve ( 14 ) for receiving the third and fourth lugs ( 143 , 144 ), two protrusive portions ( 152 , 153 ) respectively formed at two sides of the channel ( 151 ), and two cambered surfaces respectively formed between the protrusive portions ( 152 , 153 ) and the channel ( 151 ), a resilient member ( 16 ) provided between the second sleeve ( 15 ) and the nut ( 18 ), and a gasket ( 17 ) provided between the resilient member ( 16 ) and the nut ( 18 ). 2. The hinge as claimed in claim 1, wherein the shaft ( 11 ) has a non-circular protrusion formed at an end of the large part ( 110 ), and the first seat ( 20 ) has a non-circular hole ( 210 ) defined through the first upright portion ( 21 ) for receiving the non-circular protrusion. 3. The hinge as claimed in claim 2, wherein the non-circular protrusion of the shaft ( 11 ) and the non-circular hole ( 210 ) of the first seat ( 20 ) are semi-circular. 4. The hinge as claimed in claim 2, wherein the non-circular protrusion of the shaft ( 11 ) and the non-circular hole ( 210 ) of the first seat ( 20 ) are crescent. 5. The hinge as claimed in claim 2, wherein the non-circular protrusion of the shaft ( 11 ) and the non-circular hole ( 210 ) of the first seat ( 20 ) are polygonal. 6. The hinge as claimed in claim 1, wherein the first sleeve ( 14 ) has a flange ( 145 a ) formed at the side facing the second upright portion ( 31 ), and two fifth lugs formed at opposite diametrical sides of the flange ( 145 a ), the second upright portion ( 31 ) has two cutouts defined in the circular opening ( 310 a ), and the flange ( 145 a ) is received in the circular opening ( 310 a ) and the fifth lugs are respectively received in the cutouts. 7. The hinge as claimed in claim 1, wherein the small part ( 112 ) has two flat surfaces formed on opposite sides thereof, the positioning disk ( 12 ) having a first hole ( 120 ) for receiving the small part ( 112 ) therethrough. 8. The hinge as claimed in claim 7, wherein the second sleeve ( 15 ) has a second hole ( 150 ) matching the cross section of the small part ( 112 ). 9. The hinge as claimed in claim 7, wherein the gasket ( 17 a ) has a third hole ( 170 a ) matching the cross section of the small part ( 112 ).
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