Closure assembly for a vacuum valve

A vacuum valve for regulating a volume of mass flow and/or for closing and opening a valve opening, comprising

• a valve seat having the valve opening defining an opening axis and a first sealing surface surrounding the valve opening,
• a closure assembly for regulating the volume or mass flow and/or for closing the valve opening in a substantially gas-tight manner with a second sealing surface corresponding to the first sealing surface, and
• a drive unit coupled to the closure assembly and adapted to provide movement of the closure assembly such that the closure assembly is adjustable
• from an open position, in which the closure assembly at least partially exposes the valve opening, into
• a closed position, in which there is sealing contact of the first sealing surface and the second sealing surface with a sealing material present therebetween and the valve opening is thereby closed in a gas-tight manner, and back,
• wherein:
• the closure assembly comprises
• a carrier element having a first connection side and a closure plate having a second connection side, wherein the first and second connection sides are designed to connect the carrier element to the closure plate,
• a support and a retaining element wherein
• the first connection side comprises the support and the second connection side comprises the retaining element or
• the first connection side comprises the retaining element and the second connection side comprises the support,
• the closure plate is brought together with the carrier element, and the support and the retaining element are designed to correspond in such a way that a clamping force, which is directed orthogonally to an extension of at least one of the connection sides, is generated by an interaction of the support with the retaining element in the brought-together state,
• the retaining element projects from the respective connection side and has a curved boundary line for interaction with the support.