Shield and locking type board to board connector

1. A shield and locking type board to board connector functioning to connect a first board and a second board to each other, the connector comprising:

a first connector unit having both a first base and a first terminal;

a second connector unit having a second base and a second terminal; and

two shield members each having a shell shape, the shield members respectively provided on front and rear bases facing the second base such that the shield members arrest EMI (electromagnetic interference) noise,

wherein each of the shield members comprises:

a vertical part covering an outer surface of the front and rear bases;

a horizontal part integrated with the vertical part, extending between both end portions thereof, and covering and enclosing an upper surface of the front and rear bases;

at least one ground protrusion formed on a lower edge of the vertical part; and

a locking member stop part formed by being bent vertically downward in each of opposite ends of the horizontal part.

2. The shield and locking type board to board connector as set forth in claim 1 , further comprising:

a locking member provided in the second connector unit so as to prevent the first connector unit from being removed outward by an outward movement thereof after the first connector unit is combined with the second connector unit in a close contact state.

3. The shield and locking type board to board connector as set forth in claim 2 , wherein the locking member comprises:

a lower rib;

opposite vertical sides formed on opposite ends of the lower rib;

an upper rib formed between upper ends of the opposite vertical sides; and

a pressure protrusion extending from the lower rib by being bent in a direction, wherein

when the pressure protrusion is pressed downward, the opposite vertical sides and the upper rib are turned based on the lower rib, and

when the upper rib is turned, the upper rib is placed on an outside end of a hooked part of the first connector unit, so the locking member holds the first connector unit and prevents the first connector unit from being removed,

wherein the locking member is configured to turn around the lower rib in a state in which the position of the lower rib is maintained in the seat.

4. The shield and locking type board to board connector as set forth in claim 3 , wherein

the second connector unit is provided with a locking part in each of opposite ends of the second base, wherein

the locking part includes:

a depression that is open upward; and

a seat closed by a support part at an upper end thereof, wherein the lower rib of the locking member is seated in the seat so as to support the locking member in such a way that the locking member can be turned around the seat, and

a part of the first connector unit is inserted into the depression, wherein, when the pressure protrusion is pressed down, the locking member is turned around the lower rib, and the upper rib is moved to a position at which the upper rib holds the outside end of the hooked part of the first connector unit.

5. The shield and locking type board to board connector as set forth in claim 4 , wherein the first connector unit comprises:

a pressure part formed on the first base at a position facing the second base; and

the hooked part formed on the first base at a position opposite to the pressure part, wherein

when the first connector unit and the second connector unit are brought into close contact with each other, the pressure part of the first connector unit is inserted into the depression, and when the pressure protrusions of the locking member is pressed down, the locking member is turned around the lower rib seated in the seat, and the upper rib is moved to the position at which the upper rib holds the outside end of the hooked part.

6. The shield and locking type board to board connector as set forth in claim 4 , wherein

a space is formed inside the support part of the locking part such that the space is open upward and sideward, and

the lower rib of the locking member is inserted downward into the space of the support part, and is moved outward on a bottom surface of the space of the support part so as to be seated in the seat.

7. The shield and locking type board to board connector as set forth in claim 6 , wherein

a vertical insert hole is formed in a lower end of the space of the support part, so, when a lower end of the locking member stop part is inserted into the vertical insert hole, the locking member stop part pushes the lower rib into the seat in the space of the support part.

8. The shield and locking type board to board connector as set forth in claim 2 , further comprising:

an axial bent part formed in the vertical part of the shield member.

9. The shield and locking type board to board connector as set forth in claim 1 , wherein

a first ground protrusion is formed on each of opposite ends of the lower edge of the vertical part of each of the shield members, and a plurality of second ground protrusions are formed on the lower edge of the vertical part at spaced locations between the first ground protrusions formed on the opposite ends of the vertical part, and

first ground terminals are formed on a second board that is placed below the shield members such that the first ground terminals are electrically connected to the first ground protrusions, and a plurality of second ground terminals are formed between the first ground terminals on the second board at locations corresponding to the plurality of second ground protrusions.

10. The shield and locking type board to board connector as set forth in claim 9 , wherein

electric terminals are arranged on the second board in a line along with the first and second ground terminals so as to be electrically connected to the second terminals, wherein

the second ground terminals further protrude outward than the electric terminals.

11. The shield and locking type board to board connector as set forth in claim 10 , wherein

the second terminals and the second ground protrusions are commonly connected to the second ground terminals.

12. The shield and locking type board to board connector as set forth in claim 1 , wherein

a U-shaped contact part of the first terminal which is not soldered to the first board is provided with a recessed main contact point and a protruding sub-contact point at opposite positions on an outer surface, and

a U-shaped contact part of the second terminal which is not soldered to the second board is provided with a main contact point protrusion and a sub-contact point surface at opposite positions on an inner surface, in which the sub-contact point surface has a vertical surface shape, the main contact point protrusion corresponds to the recessed main contact point, and the sub-contact point surface corresponds to and is guided by the protruding sub-contact point.

13. The shield and locking type board to board connector as set forth in claim 1 , wherein

a left to right width of the first board is smaller than a left to right width of the first connector unit.