QSFP+ module hot-pluggable unlocking structure

1. A hot-pluggable unlocking structure of a QSFP+ module, the hot-pluggable unlocking structure comprising a housing formed of an upper cover ( 1 ) and a lower cover ( 2 ) buckled to each other, and a locking component ( 3 ) provided on the housing, wherein guiding grooves ( 11 ) are provided on two sides of the housing, two unlocking pieces ( 31 ) are provided at one end of the locking component ( 3 ) and a pull tab ( 32 ) is provided at the other end, the unlocking pieces ( 31 ) are engaged with and provided in the guiding grooves ( 11 ), a spring ( 4 ) is provided on the upper cover ( 1 ), spring-catch elements ( 33 ) are provided on the locking component ( 3 ) and protrude towards the upper cover ( 1 ), and the spring-catch elements ( 33 ) and the spring ( 4 ) are pressed against each other;

wherein the upper cover ( 1 ) is provided with a spring groove ( 12 ), a middle portion of the spring groove ( 12 ) is provided with a positioning pin ( 13 ), the spring ( 4 ) is a torsion spring with a helical center hole, and the torsion spring is sheathed on the positioning pin ( 13 );

the spring groove ( 12 ) comprises a wide portion and a narrow portion, two transition steps are formed on both sides at a joint between the wide portion and the narrow portion, and the positioning pin ( 13 ) is provided in the wide portion; and two legs of the torsion spring are respectively abutted against the corresponding transition steps, and the torsion spring is in a preloaded state;

each transition step comprises a first surface facing the wide portion and a second surface facing the narrow portion and perpendicular to the first surface; and the two legs of the torsion spring are respectively abutted against the first surfaces of the corresponding transition steps;

wherein both the upper cover ( 1 ) and the lower cover ( 2 ) are provided with spacing grooves ( 15 ), and both sides of the unlocking pieces ( 31 ) are provided with spacing projections ( 34 ); the spacing projections ( 34 ) are capable of sliding horizontally back and forth within the spacing grooves ( 15 ) on the upper cover ( 1 ) and the lower cover ( 2 ), and both an initial locked position and an unlocked position of the spacing projections ( 34 ) are limited by a length of the spacing grooves ( 15 ); unlocking projections ( 35 ) are provided at ends of the unlocking pieces ( 31 ); a distance between spring clips ( 51 ) on both sides of a cage receptacle ( 5 ) in which the hot-pluggable unlocking structure is locked is less than a width of the housing, so that the unlocking projections ( 35 ) get stuck and the QSFP+ module cannot be removed from the cage receptacle ( 5 ); and when the pull tab ( 32 ) is pulled, the unlocking projections ( 35 ) push up the spring clips ( 51 ) of the cage receptacle ( 5 ), so as to make the distance between the spring clips ( 51 ) on the both sides greater than the width of the housing, and then unlock and remove the QSFP+ module.

2. The hot-pluggable unlocking structure according to claim 1 , wherein spring-catch guides ( 14 ) are further provided in the spring groove ( 12 ), and bottoms of the spring-catch elements ( 33 ) are located in the spring-catch guides ( 14 ); the two legs of the torsion spring are respectively located above the corresponding spring-catch guides ( 14 ), and bottom surfaces of the spring-catch elements ( 33 ) are lower than a bottom of the spring groove ( 12 ).

3. The hot-pluggable unlocking structure according to claim 1 , wherein a pull-tab sleeve ( 36 ) is provided around the pull tab ( 32 ), the pull tab ( 32 ) is enclosed in the pull-tab sleeve ( 36 ), and a streamlined curved surface is disposed at a rear end of the pull-tab sleeve ( 36 ); the pull tab ( 32 ) uses a curved tab made of sheet metal, and the pull-tab sleeve ( 36 ) is a plastic sleeve; and the sheet metal pull tab ( 32 ) is sheathed with the pull-tab sleeve ( 36 ) by means of one-step thermoplastic processing, the streamlined curved surface is designed to simulate a bending arc shape of human fingers.