Patent ID: 11952165
Assignee: nan
Field: Handling (Mechanical engineering)
Classification: CPC B | IPC B

Claim 15:
16. The assembled unit according to claim 1, wherein the assembled unit further comprises a second plate member, which is disposed between the pair of first plate members, both ends of each second plate member are inserted into the corresponding sliding grooves of the two lateral guide rails, each of the lateral guide rails has said engaging structures configured at positions other than both ends thereof, each second plate member has a corresponding engaging portion disposed at both ends thereof; when the engaging portion is slid into the engaging position, the corresponding second plate member engages with the lateral guide rail, and when the engaging portion is slid into the disengaging position, the corresponding second plate member can be disengaged from the sliding groove of the lateral guide rail;
and on a surface of each second plate member, a second engaging slot is disposed in a direction parallel to the lateral guide rail, the second engaging slot extends across a whole surface of the second plate member and matches the position of the engaging slot on an adjacent plate member, the sliding block of the spine member can slidably fit with the second engaging slot,
such that the spine member is slidable can be slid along the second engaging slot but is locked in a direction perpendicular to the surface of the corresponding plate member.