Interposed force sensor including amplifiers
AssigneeKistler Instrumente AG
InventorsHans Sonderegger, Mario Giorgetta, Peter Wolfer
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Abstract
An interposed sensor having a housing whose lateral extend is not greater than the lateral extend of the machine parts is to be installed between and having a plurality of measuring elements welded under preloading to the housing. Electronics including charge amplifiers are integral with the housing, either interior the lateral extend or in an annular compartment.
Claims17
An interposed sensor to be fitted between two force-transmitting machine parts having a first lateral extent comprising:
- an annular housing:
- one or more measuring elements each having at least two but not more than five layers and including force introduction surfaces forming gaps there between;
- weld means including a weld for securing said measuring element under mechanical preloading into said housing sufficient to reduce said gaps;
- said measuring elements, weld and housing having a common planar surface;
- and
- electronics including one or more charge amplifiers in an annular compartment integral to said housing and tangentially outside said housing such that the lateral extent of said housing and said electronics is not greater than said first lateral extent.
An interposed sensor to be fitted between two force-transmitting machine parts having a first lateral extent comprising:
- a housing having a lateral extent not greater than said first lateral extent, a plurality of holes around the periphery of said housing, at least one through hole and a hole in the center of said housing;
- one or more measuring elements secured in said holes around the periphery of said housing;
- said measuring elements and housing having a common planar surface;
- said at least one through hole in said housing receiving a preloading bolt interconnecting said two force-transmitting machine parts;
- and
- electronics including one or more charge amplifiers secured in said hole in the center of said housing.
An interposed sensor to be fitted between two force-transmitting machine parts having a first lateral extent comprising:
- a housing having a lateral extent not greater than said first lateral extent;
- a plurality of measuring elements including signal electrodes and secured in holes of said housing;
- said measuring elements and housing having a common planar surface;
- at least one through hole in said housing for receiving a preloading bolt interconnecting said two force-transmitting machine parts;
- and
- electronics including charge amplifiers secured to said housing adjacent to said measuring elements and connected to said measuring element directly by said signal electrodes.
Dependencies are inferred from the claim text.