Provided is a wall bushing for establishing contact between a plug connector and a housing wall or the like. The wall bushing can be placed and fastened over an opening by three fastening bores. Advantageous arrangement of the three fastening bores ensures that the wall bushing is fitted on the housing in a particularly safe and stable manner. The special shaping of the wall bushing additionally allows a high mounting density of a large number of wall bushings in a small area.

Provided is a wall bushing for establishing contact between a plug connector and a housing wall or the like. The wall bushing can be placed and fastened over an opening by three fastening bores. Advantageous arrangement of the three fastening bores ensures that the wall bushing is fitted on the housing in a particularly safe and stable manner. The special shaping of the wall bushing additionally allows a high mounting density of a large number of wall bushings in a small area.

A connector includes a connector housing (10) with a cavity (15B), into which a terminal fitting (40) is to be inserted. The connector housing (10) is connectable to a mating connector. A retainer insertion opening (30) opens in a side surface of the connector housing (10) and in a direction intersecting an inserting direction of the terminal fitting (40). A retainer (50) can be inserted into the retainer insertion opening to lock the terminal fitting (40). The retainer (50) includes a thin plate (61) extending in an inserting direction of the retainer (50), a convex portion (70) on a lower surface of the thin plate (61) and a groove (71) in the convex portion (70). A projection (25) is provided on a rear part of a locking lance (20) in the cavity (15B) of the connector housing (10) and fits to the groove (71).

A connector includes a connector housing (10) with a cavity (15B), into which a terminal fitting (40) is to be inserted. The connector housing (10) is connectable to a mating connector. A retainer insertion opening (30) opens in a side surface of the connector housing (10) and in a direction intersecting an inserting direction of the terminal fitting (40). A retainer (50) can be inserted into the retainer insertion opening to lock the terminal fitting (40). The retainer (50) includes a thin plate (61) extending in an inserting direction of the retainer (50), a convex portion (70) on a lower surface of the thin plate (61) and a groove (71) in the convex portion (70). A projection (25) is provided on a rear part of a locking lance (20) in the cavity (15B) of the connector housing (10) and fits to the groove (71).

A secure locking and unlocking system includes a plug body that is cylindrical in shape, a locking ring and a notched washer. One face of the notched washer is positioned on the locking surface of the locking ring. The system further includes a holding pin that locks the position of a locking element and an upper ring mounted on the locking ring. The locking ring includes a ramp-shaped groove with a linear part, a rising ramp and a descending ramp. A ramp spring is configured so that the locking or unlocking movement of the upper ring is mobile and the locking ring is fixed. The upper ring includes a hole in which a lug is placed. The end of the lug cooperates with the ramp-shaped groove of the locking ring that guides the upper ring in relation to the locking ring.

A connector assembly that includes a first connector and a second connector. The first connector has a spring member press-fitted into a housing thereof. The second connector has a groove in a housing thereof. At the time of mating, the spring member is inserted in the groove in a mating direction to be deformed elastically in a direction intersecting the mating direction. Then, with the spring member of the first connector elastically deformed in the groove of the second connector, looseness between the housing of the first connector and the housing of the second connector is prevented.

A spring loaded direct plug-in terminal with a direct plug-in connector for the connection of a conductor includes a housing with a chamber and a plug-in channel for plugging the conductor into the chamber. The terminal also includes a busbar, a clamping spring arranged in the chamber and acting as a compression spring for fixing the electrical conductor on the busbar in the area of a clamping site. The clamping spring includes a pivotable clamping arm which can be adjusted from a locked state in a locked position into a clamping state in which it is unlocked from the locked state and presses the electrical conductor against the busbar. An actuation element which is movable in the housing is provided which, together with the clamping arm of the clamping spring, can be locked in the locked state. The mobility of the actuation element in the housing in the locked state can be arrested by a locking element which is movable at an angle relative to the movement direction of the actuation element.

A connector comprises a housing and a lock connected to the housing. The lock has a base extending in a mating direction, a bend extending continuously from a rear end of the base in the mating direction and formed in a U-shape, and a press-fitting protrusion extending from an end of the bend opposite the base. The bend has a bend face facing in the mating direction and is separated from the housing by a bend gap. The press-fitting protrusion is press-fitted in the housing.

A communication system includes a plug connector mated with a receptacle connector. The receptacle connector includes a housing holding a contact assembly. The housing includes a front housing that receives an inner housing, which receives contact holders and receptacle contacts of the contact assembly. The receptacle connector housing includes a height profile defined between top and bottom walls with a housing latch and guide pockets contained within the height profile. The plug connector includes a housing holding a cable assembly with a circuit card received in a card slot of the receptacle housing. The plug connector housing includes alignment embossments received in the guide pockets and latches coupled to the alignment embossments are latchably coupled to the receptacle connector. The latches are contained within a height profile of the plug connector housing.

To provide a connector capable of appropriately attaching a retainer to a housing while reliably arranging a cable terminal at an appropriate position even when a clearance between members is reduced in order to reduce the size of the connector. A cable terminal 20 has a first stopped part 24a. A retainer 40 has a positioning post 41 positioned in a rearward direction from the first stopped part 24a of the cable terminal 20 and restricting movement of the cable terminal 20 in a rearward direction. The positioning post 41 is elastically deformable to move in a forward-rearward direction.