Connection assembly for a hand-guided machine tool and hand-guided machine tool

Machine tool comprising a tool head, a further machine module and a connection assembly for connecting the tool head and the further machine module, wherein the connection assembly comprises at least two connection parts following one another along a longitudinal axis and each having a connection section via which the connection parts are connectable to one another, wherein the connection sections each delimit an inner cross section to the outside such that an inner chamber having a volume is formed, characterized in that inside the volume of the inner chamber of the connection section of a first of the connection parts a mechanical clamping element is arranged and inside the volume of the inner chamber of the connection section of the other connection part a mechanical counter element is arranged, wherein on the connection section of the first connection part an actuatable clamping device is provided that acts on the clamping element, wherein the clamping element and the counter element are configured in such a way that they can be brought into engagement with one another when the connection sections are plugged together and wherein, by actuating the clamping device, the connection parts are braceable against one another when the clamping element is in engagement with the counter element and wherein the mechanical clamping element is wholly enclosed within the volume of the chamber when the mechanical clamping element is in engagement and out of engagement with the mechanical counter element, wherein the counter element is displaceably guided on the second connection part and is mounted on the second connection part or on the connection section of the second connection part by interposition of a spring, wherein the counter element is coupled to or merges with a retaining portion, wherein the retaining portion includes an angled portion, and wherein the spring is disposed between the angled portion and the transverse bolt on the second connection part.

Extension piece for a connection assembly for connecting a tool head and a further machine module of a hand-guided machine tool, wherein the connection assembly comprises at least two connection parts following one another along a longitudinal axis and each having a connection section via which the connection parts are connectable to one another, wherein the connection sections each delimit an inner cross section to the outside such that an inner chamber having a volume is formed, characterized in that inside the volume of the inner chamber of the connection section of a first of the connection parts a mechanical clamping element is arranged and inside the volume of the inner chamber of the connection section of the other connection part a mechanical counter element is arranged, wherein on the connection section of the first connection part an actuatable clamping device is provided that acts on the clamping element, wherein the clamping element and the counter element are configured in such a way that they can be brought into engagement with one another when the connection sections are plugged together and wherein, by actuating the clamping device, the connection parts are braceable against one another when the clamping element is in engagement with the counter element, and wherein the mechanical clamping element is wholly enclosed within the volume of the chamber when the mechanical clamping element is in engagement and out of engagement with the mechanical counter element, wherein the counter element is displaceably guided on the extension piece and is mounted on the extension piece or on the second connection section of the extension piece by interposition of a spring, wherein the counter element is coupled to or merges with a retaining portion, wherein the retaining portion comprises an angled portion and wherein the spring is arranged between the angled portion and the transverse bolt at the second connection portion of the extension piece.

Extension piece for a connection assembly for connecting a tool head and a further machine module of a hand-guided machine tool, wherein the extension piece has at both ends a respective connection section, via which the extension piece is connectable to a connection part of the connection assembly respectively, wherein the connection sections of the extension piece each delimit an inner cross-section towards the outside such that an inner chamber having a volume is formed, characterized in that inside the volume of the inner chamber of the first connection section a mechanical clamping element is arranged and inside the volume of the inner chamber of the second connection section a mechanical counter element is arranged, wherein on the first connection section an actuatable clamping device is provided that acts on the clamping element, and wherein the mechanical clamping element is wholly enclosed within the volume of the chamber when the mechanical clamping element is in engagement and out of engagement with the mechanical counter element of the connection part, wherein the counter element is displaceably guided on the second connection part and is mounted on the second connection part or on the connection section of the second connection part by interposition of a spring, wherein the counter element is coupled to or merges with a retaining portion, where in the retaining portion includes an angled portion, and wherein the spring is disposed between the angled portion and the transverse bolt on the second connection part.