Couplers for a cable trough system including a terminal end sized to receive a terminal end of a trough member along a longitudinal direction of the body. A spring may be coupled to the body for securing the terminal end of the trough member to the coupler, the spring including first and second spring arms extending generally in opposition to one another in a plane generally parallel to the longitudinal direction. The spring may be received in a slot formed by the trough member. Also included may be a spring release mechanism coupled to the body, the spring release mechanism sliding in the longitudinal direction between a locked position, such that the first and second spring arms engage the terminal end of the trough, and an unlocked position, such that the first and second fingers release the first and second arms of the spring.

Couplers for a cable trough system including a terminal end sized to receive a terminal end of a trough member along a longitudinal direction of the body. A spring may be coupled to the body for securing the terminal end of the trough member to the coupler, the spring including first and second spring arms extending generally in opposition to one another in a plane generally parallel to the longitudinal direction. The spring may be received in a slot formed by the trough member. Also included may be a spring release mechanism coupled to the body, the spring release mechanism sliding in the longitudinal direction between a locked position, such that the first and second spring arms engage the terminal end of the trough, and an unlocked position, such that the first and second fingers release the first and second arms of the spring.

A connection device for an apparatus includes a first rotation shaft, a second rotation shaft, a synchronization bulk, and a guide bulk. The first rotation shaft includes a first synchronization section set with a first groove; the second rotation shaft is in parallel with the first rotation shaft and includes a second synchronization section set with a second groove. The synchronization bulk includes a first end, a second end disposed opposite the first end, and a position limitation section, with the first end being disposed within the first groove and capable of sliding within the first groove, the second end being disposed within the second groove and capable of sliding within the second groove; the guide bulk being set with a first containing groove, a second containing groove, and a guide groove containing groove.