Patent ID: 7711396

Claim:
A mobile communication terminal comprising: a housing having an upper housing and a lower housing; and a joint that mutually joins the upper housing with the lower housing such that at least one of the upper housing and the lower housing is configured to be obliquely twisted to rotate about an interface formed between the upper housing and the lower housing, wherein the joint further includes: a lower joint connected on the lower housing, wherein the lower joint comprises at least one extension projecting from the lower housing, the extension having at least one head formed flat and wide at an end of the extension; and an upper joint connected on the upper housing, wherein the lower joint fits at least partially inside the upper joint, and wherein the upper joint further comprises a ring type joint housing connected to the upper housing, the ring type joint housing comprising: a receiving portion to allow the at least one head to be rotatably inserted therein; and at least one protrusion protruding from a lower end of the ring type joint housing to prevent the at least one head from escaping from the receiving portion; wherein the upper joint further comprises at least one partition plate provided within the ring type joint housing to partition the receiving portion into a first space and separate a second space and wherein the lower joint comprises a first head and a second head to be received in the first space and the second space, respectively.