Patent ID: 7870821

Claim:
A coffee maker comprising: a water storage container for storing water for extracting coffee and having a drainage hole formed at one sided portion thereof; a tube for guiding water drained through the drainage hole of the water storage container to a portion for extracting coffee; and a connection unit having a first connector of which one end is connected to the water storage container, and a second connector of which one end is connected to the tube and the other end is separably connected to the first connector, wherein the first connector comprises: a first water passage communicating with the drainage hole and a first opening/closing unit, a second pressing protrusion, and the first opening/closing unit, wherein the first opening/closing unit includes a first valve unit provided on the first water passage for selectively shielding the first water passage, and the first valve unit includes a first valve body and a first elastic member; wherein the second connector comprises: a second water passage communicating with the tube and a second opening/closing unit, a first pressing protrusion, and the second opening/closing unit, wherein the second opening/closing unit includes a second valve unit provided on the second water passage for selectively shielding the second water passage, and the second valve unit includes a second valve body and a second elastic member; wherein the connection unit is adapted to communicate the water storage container with the tube, the first valve unit and the first elastic member are adapted to shield the first water passage to prevent water from leaking from the water storage container when the first connector and the second connector are separated from each other, and the second valve unit and the second elastic member are adapted to shield the second water passage to prevent water from leaking from the tube when the first connector and the second connector are separated from each other, and wherein when the first connector and the second connector are attached to each other the first pressing protrusion is inserted into the first valve unit to push the first valve body and the first elastic member to open the first water passage, the second pressing protrusion is inserted into the second valve unit to push the second valve body and the second elastic member to open the second water passage, and the first pressing protrusion and the second pressing protrusion are offset from each other.