Pressure sensor
AssigneeKistler Holding AG
InventorMichael MUELLER
Life of this patent
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Abstract
A pressure sensor for measuring the pressure of a medium in an interior of a pressure chamber defined by a wall including a measuring bore extending from outside of the pressure chamber into the interior. The pressure sensor includes a housing, a plunger element and a measuring element. The plunger element and the measuring element are arranged in a housing space of the housing. When the pressure sensor is mounted at the measuring bore, the plunger element extends within the housing space, wherein the pressure acts onto the plunger element, which is operatively connected to the measuring element and transmits the pressure onto the measuring element. An annular gap extends between the housing and the plunger element. A foil element seals the annular gap from the ingress of the medium.
Claims20
A pressure sensor for measuring the pressure of a medium in a pressure chamber that includes a wall defining a measuring bore that is configured to extend from outside the pressure chamber into the pressure chamber, the pressure sensor comprising:
- a housing that elongates along a longitudinal axis and defines a housing space contiguous with a housing opening, wherein the housing defines a housing end at one opposite end of the housing, and the housing opening is disposed at the housing end, which is configured to project into the measuring bore from outside the pressure chamber when the sensor is mounted at the mounting bore of the pressure chamber;
- a measuring element disposed in the housing space;
- a plunger element disposed in the housing space and elongating along the longitudinal axis up to the housing opening, wherein the plunger element is operatively configured to transmit to the measuring element, the pressure of the medium in the pressure chamber;
- wherein the housing and plunger element are configured and disposed to define an annular gap between the housing and the plunger element, wherein the annular gap extends in the longitudinal direction in the housing space;
- and
- a foil element attached to the housing end and configured and disposed to seal the annular gap against ingress of the medium into the annular gap.
An injection molding tool comprising:
- a pressure chamber that is configured to contain a medium under pressure and includes a wall defining a measuring bore that is configured to extend from outside the pressure chamber to the pressure chamber;
- a pressure sensor mounted at the mounting bore of the pressure chamber, wherein the pressure sensor includes:
- a housing that elongates along a longitudinal axis and defines a housing space contiguous with a housing opening, wherein the housing defines a housing end at one opposite end of the housing, and the housing opening is disposed at the housing end, which is configured to project into the measuring bore from outside the pressure chamber when the sensor is;
- a measuring element disposed in the housing space;
- a plunger element disposed in the housing space and elongating along the longitudinal axis up to the housing opening, wherein the plunger element is operatively configured to transmit to the measuring element, the pressure of the medium in the pressure chamber;
- wherein the housing and plunger element are configured and disposed to define an annular gap between the housing and the plunger element, wherein the annular gap extends in the longitudinal direction in the housing space;
- and
- a foil element attached to the housing end and configured and disposed to seal the annular gap against ingress of medium into the annular gap.
Dependencies are inferred from the claim text.