Abstract: A connector has at least one engagement ball that is movable between an engagement position and a disengagement position. A movement of an engagement ball operating part of the connector relative to an inner housing of the connector can force the at least one engagement ball from the engagement position into the disengagement position. The at least one engagement ball is biased in the engagement position by an elastic element via the engagement ball operating part. The connector further comprises an outer housing of the connector with a catch that when the outer housing is operated engages with a counter catch of the engagement ball operating part to move the engagement ball operating part, so that the engagement ball operating part forces the at least one engagement ball from the engagement position into the disengagement position.

Abstract: A counter connector for mating with a connector has a hollow cylindrical housing. The counter connector includes at least two, and preferably three, of the following three types of locking means for locking the counter connector to the connector: (A) one that is arranged on a perimeter on a cylindrical surface of the housing or of a sleeve located inside the housing, a counter engagement part in the form of a groove, a collar, or a series of radially extending apertures, recesses or protrusions, the counter engagement part being adapted to engage with at least one engagement part or at least one latching part of the connector. (B) one that has a counter latching part that can be deflected elastically in a radial direction of the counter connector and comprises at least one of a radially extending groove, collar, aperture, recess or protrusion adapted to engage with a latching part of the connector. (C) one where a counter thread is adapted to engage with a thread of the connector.

Abstract: A counter connector for mating with a connector has a hollow cylindrical housing. The counter connector includes at least two, and preferably three, of the following three types of locking means for locking the counter connector to the connector: (A) one that is arranged on a perimeter on a cylindrical surface of the housing or of a sleeve located inside the housing, a counter engagement part in the form of a groove, a collar, or a series of radially extending apertures, recesses or protrusions, the counter engagement part being adapted to engage with at least one engagement part or at least one latching part of the connector. (B) one that has a counter latching part that can be deflected elastically in a radial direction of the counter connector and comprises at least one of a radially extending groove, collar, aperture, recess or protrusion adapted to engage with a latching part of the connector. (C) one where a counter thread is adapted to engage with a thread of the connector.

Abstract: A connector has at least one engagement ball that is movable between an engagement position and a disengagement position. A movement of an engagement ball operating part of the connector relative to an inner housing of the connector can force the at least one engagement ball from the engagement position into the disengagement position. The engagement ball operating part can have claws that extend through at least one window in a supporting part or the inner housing or between the supporting part and the inner housing. A system which includes the connector and a counter connector lockable to the connector by f a locking mechanism has the at least one engagement ball of the connector engage with an engagement part of the counter connector.