JOINT BRICK FOR BUILDING BLOCK

摘要

A joint brick for a building block is pivotally connected between the building blocks to work as a joint of the limbs. The joint brick includes two side plates and two axial post disposed between the side plates to be pivotally connected with engaging recesses of other building blocks. When the axial posts disposed at a top end and a bottom end of the joint brick are pivotally connected with other building blocks, the limbs can substantially swing, extend and bend relative to each other to make playing the building blocks more convenient and more interesting.

主权项

1. A joint brick for a building block, comprising:
two side plates; and axial posts disposed between the side plates, each axial post having an outer wall formed with a cylindrical surface configured for pivotally connecting with a recess opening of an engaging recess of the building block, the cylindrical surface having a ridge portion projected out of the cylindrical surface in a radial direction of the axial post, the ridge portion extended in an axial direction of the axial post; wherein the ridge portion blocks an outer edge portion of the recess opening to limit an angle that the building block can pivotally swing relative to the joint brick around the axial post when the axial post is connected with the building block through the recess opening.