Injection needle with flexible needle tip
OwnerThomas Hofmann, Alwin Perras +1inventors
InventorsThomas Hofmann, Alwin Perras, Hakan Yalcin
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Abstract
An injection needle comprising a needle tip, elastically connected to a needle shaft by means of a connector piece. A damping of the force with which the needle tip hits the corresponding sealing seat is possible by means of the elastic connection. The load on the sealing seat is thus reduced.
Claims22
Injection needle for an injection valve with a needle body comprising a needle shaft and a needle tip, and a sealing surface configured on the needle tip, said surface being configured to rest on a sealing seat of the nozzle body, wherein the needle tip is connected via an impetus-damping element to the needle shaft.
An injection needle for an injection valve, said needle comprising:
- a needle body comprising a needle shaft, a needle tip, and a sealing seat, said needle tip having a sealing surface, said surface being configured to rest on the seat of the body, and said tip being flexibly connected to the shaft.
An injection needle for an injection valve, said needle comprising:
- a needle body having a needle shaft, a needle tip, and a sealing seat, said needle tip having a sealing surface configured to rest on the seat of the body, said sealing surface tapered and configured with rotational symmetry with respect to an axis of symmetry of the injection needle, said sealing seat tapered and configured with rotational symmetry with respect to an axis of symmetry of the injection needle, a differential angle being configured between the sealing surface and the sealing seat, said needle tip configured as a body with rotational symmetry and connected via an impetus-damping element to the shaft, said impetus-damping element configured in the form of a groove, wherein the respective sections of the needle shaft and the needle tip that are directly adjacent to the groove have the same cross-section.
Dependencies are inferred from the claim text.