| 摘要 |
<p>A joint joins together two tubular rails of a playpen. The joint includes a shell. A first block and a second block are pivotally received in the shell. A first tubular element and a second tubular element are each secured in one of the tubular rails. Each of the tubular element defines a first axial passage and a second axial passage. A first bolt with a head is inserted through the second axial passage defined in the first tubular element while the head thereof is retained in the first axial passage defined in the first tubular element. The first bolt is secured to the first block. A second bolt with a head is inserted through the second axial passage defined in the second tubular element while the head thereof is retained in the first axial passage defined in the second tubular element. The second bolt is secured to the second block. The first block defines a longitudinal recess and a longitudinal slot in communication with the longitudinal recess defined therein. A spring is received in the longitudinal recess defined in the first block. A latch is received in the longitudinal recess defined in the first block. The first tubular element defines a longitudinal slit. The latch is biased by the spring into the longitudinal slit thus keeping the shell from being pivoted relative to the tubular rail. The latch can be disengaged from the longitudinal slit thus allowing the shell to be pivoted relative to the tubular rail.</p> |
