Patent ID: 8122523

Claim:
A toilet seat hinge for toilet having a toilet seat and a toilet bowl, comprising: a hinge body adapted for pivotally coupling with said toilet seat; a hinge base, which is adapted for attaching on said toilet bowl of said toilet, detachably coupled with said hinge body for detachably coupling said toilet seat on said toilet bowl; and a locking arrangement which comprises a retention lock operatively moving between a locking status that locks up said hinge body with said hinge base and a releasing status that unlock said hinge body with said hinge base, and a self-lock retaining said retention lock at said releasing status; wherein said retention lock comprises two locking latches slidably and longitudinally coupled at said hinge base and two locking teeth spacedly provided at said hinge body and arranged in such a manner that when said locking latches are longitudinally slid away from each other to engage with said locking teeth respectively, said hinge body is coupled with said hinge base, and when said locking latches are longitudinally slid towards each other to disengage with said locking teeth, said hinge body is adapted to be detached from said hinge base; wherein each of said locking latches comprises an inclining end contacting with said respective locking tooth in which a distance between said locking teeth is shorter than a distance between said two inclining ends of said locking latches, wherein when said hinge body is coupled with said hinge base, said inclining ends of said locking latches are slid along said locking teeth to push said locking latches towards each other until said inclining ends of said locking latches engage with said locking teeth respectively.