Plug-in connector arrangement and mating plug-in connector

A plug-in connector arrangement for high-current applications and/or high-voltage applications, the plug-in connector arrangement comprising:

• a plug-in connector;
• a mating plug-in connector configured to plug together with the plug-in connector;
• wherein the plug-in connector includes a lamella cage having a base element and a plurality of contact lamellae, wherein the contact lamellae are connected to the base element in a rear portion, protrude from the base element in a direction of the mating plug-in connector, and have a front portion facing the mating plug-in connector, wherein the mating plug-in connector includes a contact element having a head portion and a contacting part, wherein the contacting part protrudes from the head portion, wherein the head portion has a collar, which projects beyond the contacting part in a radial direction, wherein a groove is introduced into the collar on a bottom side facing the lamella cage, wherein the groove runs at least partially obliquely outward on a groove outer wall facing an edge of the collar,
• wherein the contact element and/or the mating plug-in connector, when plugged together with the plug-in connector, can be displaced between a first position and a second position, along an insertion direction,
• wherein, in the first position, the groove outer wall is mechanically coupled in a first groove portion to the front portion of the contact lamellae in a first radial position, and a radial play is formed between the contact lamellae and the contacting part of the mating plug-in connector,
• wherein, in the second position, the groove outer wall is mechanically coupled in a second groove portion to the front portion of the contact lamellae in a second radial position, wherein, in the second radial position, the contact lamellae are displaced along the radial direction toward the contacting part electrically contacting the contacting part in a contact portion of the contacting part, and clamp the contacting part between them.

A mating plug-in connector for high-current applications and/or high-voltage applications, for plugging together with a plug-in connector having a lamella cage with a plurality of contact lamellae, comprising:

• a contact element having a head portion and a contacting part, wherein the contacting part protrudes from the head portion;
• wherein the head portion has a collar, which projects beyond the contacting part in a radial direction,
• wherein a groove is introduced into the collar on a bottom side facing the lamella cage,
• wherein the groove runs at least partially obliquely outward on a groove outer wall facing an edge of the collar,
• wherein the contact element and/or the mating plug-in connector, in a plugged-together state with the plug-in connector, can be displaced between a first position and a second position, along an insertion direction,
• wherein the groove outer wall is configured to mechanically couple in the first position in a first groove portion to a front portion of the contact lamellae in a first radial position,
• wherein the groove outer wall is configured to mechanically couple in the second position in a second groove portion to the front portion of the contact lamellae in a second radial position,
• wherein, in the second radial position, the contact lamellae are displaced along the radial direction toward the contacting part and electrically contact the contacting part in a contact portion of the contacting part, and, clamp the contacting part (11) between them.