Patent ID: 8336135

Claim:
A joining device for a rail of a baby bed, wherein the joining device is configured to connect two adjacent rail tubes of the rail and each of the rail tubes is pivotally connected to the joining device at a pivotally connecting location adjacent to an end of the rail tubes, said joining device comprising: two upstanding side walls; an arched portion having two longer sides and two shorter sides, said two longer sides connected between top edges of the two side walls forming an interior space; a smooth contact face formed on each of said two shorter sides of the arched portion, wherein each smooth contact face forms an acute angle with respect to a horizontal plane collinear with the apex of the arched portion; and a smoothly trimmed face extending from each smooth contact face having a first end portion connected to the respective smooth contact face and a second end portion positioned underneath the respective smooth contact face along the interior space of the joining device, wherein each of the rail tubes contacts a respective smooth contact face when the rail tube is pivotally rotated against one of the two shorter sides of the arched portion.