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US 9,003,896 B2Granted
Dual-flange disc-shaped torque sensor
AssigneeHottinger Baldwin Messtechnik GmbH
InventorsWerner Nold, Juergen Andrae
Life of this patent
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AssigneeHottinger Baldwin Messtechnik GmbH
InventorsWerner Nold, Juergen Andrae
Estimating the term…
A torque sensor includes a central hub, a fastening ring arranged radially outwardly from and coaxially circumferentially around the central hub, a continuous imperforate flange disc that extends radially between and interconnects the central hub and the fastening ring, and strain gages or other force transducers for measuring a torsional shear strain in the flange disc. The flange disc has blind pocket recesses that are recessed into the flange disc from one or both axial sides thereof. Each pocket recess is bounded at the bottom by a pocket recess floor. Strain transducers are mounted on the inner surfaces of the pocket recess floors in the pocket recesses and/or on the outer back surfaces of the pocket recess floors on the opposite side of the flange disc. The strain transducers measure torsional shear strain in the recess floors.
A torque sensor that comprises two parallel, axially opposite, disc-shaped, fastening flanges (1, 2), which are rigidly connected with one another by a radially inwardly lying torque transmission element (3), whereby one fastening flange (2) is embodied as a measuring flange, which comprises several imperforate blind pocket recesses (5, 5′) on a coaxial encircling area that extends radially between a radially outer fastening ring surface (10) of the measuring flange and the radially inwardly lying torque transmission element (3), shear force transducers (20) are applied on blind floor surfaces (15) in the blind pocket recesses or on outer surfaces (19) on a backside of the blind floor surfaces of the pocket recesses (5, 5′), and the coaxial encircling area of the measuring flange further comprises at least three radial stiffening webs (6) at positions respectively circumferentially between and separating the blind pocket recesses from one another, wherein the coaxial encircling area of the measuring flange (2) is a solid axially imperforate disc that is circumferentially and radially continuous and that extends radially from the radially inwardly lying torque transmission element to the radially outer fastening ring surface (10).
A torque sensor for measuring a torque between first and second rotational components, said torque sensor comprising:
A torque sensor comprising two disc-shaped flanges including a fastening flange and a measuring flange that are arranged parallel and axially spaced apart from one another, wherein the flanges are rigidly connected with one another by a radially inwardly positioned torque transmission element and are spaced apart from one another by an encircling spacing groove that is open radially outwardly, wherein the measuring flange has a radially outer fastening ring surface, and at least three axially outwardly open and axially non-throughgoing measuring pockets on a coaxial circumferential region between the fastening ring surface and the torque transmission element, wherein shear force transducers are applied on closed imperforate base surfaces of the measuring pockets or on closed imperforate pocket outer surfaces axially opposite the base surfaces, wherein the base surfaces form an axially imperforate closed surface as a spring-elastic deformation body, and wherein the measuring pockets are circumferentially separated from one another by stiffening webs, and wherein the coaxial circumferential region of the measuring flange extending radially between the fastening ring surface and the torque transmission element is axially imperforate without axially through-going openings.
Dependencies are inferred from the claim text.