Lockable modular connection device

Lockable modular connection device between two separate parts, said connection device including a first element intended to be connected to one of the parts and a second element intended to be connected to the other of the parts.

• wherein the first element comprises a rod rigidly connected to a ball joint of overall spherical shape, the second element comprises a hollow housing wherein said ball joint is arranged, the housing overall conforming to the ball joint and being provided with an opening traversed by the rod, wherein said connection device also comprises a space referred to as inner space between an inner face of the housing and a peripheral face of the ball joint facing one another, and a locking element arranged between the housing and the ball joint, and wherein at least one of the ball joint and the housing is provided with patterns respectively on at least a portion of the peripheral face of the ball joint or on at least a portion of the inner face of the housing,
• wherein the locking element consists of a hardened material which fills the entirety of said inner space and with respect to which said patterns form stops, to hold said ball joint in a fixed position in said housing.