EP0432122A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Hub bearing unit for vehicles
Assignee: SKF Nova AB
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Filing: 1990-12-04
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Granted: —
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Expires: 2010-12-04
Abstract
Abstract A hub bearing unit for a vehicle wheel comprising a rotatable first ring (10) connectable to the wheel (25) and a non-rotatable second ring (11) connectable to the vehicle chassis (26). The second ring includes a cylindrical portion and a radial flange (12) for connection to the vehicle chassis. A bearing (31) is radially disposed between the first and second rings enabling the first ring to rotate relative to the second ring about an axis of rotation. A self-contained non-rotatable measuring unit is secured fixedly relative to the second ring (11) for measuring external forces applied to the wheel. The self-contained measuring unit (15A) comprises an annular carrier (15) and a plurality of force sensors (4) fixedly connected in the carrier in predetermined orientations relative to the axis of rotation. The force sensors are circumferentially spaced apart in the carrier. The carrier and force sensors are axially insertable and removable as a unit relative to the second ring. The carrier is molded of plastic, and the force sensors are integrally molded with the carrier. A heat shield (572) is disposed between the measuring unit and the brakes of the wheel.
Inventors
- 👤 Rune Adolfsson
- 👤 Sture Asberg
- 👤 Tore Hesthamar
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-07 16:07
CPC Classifications
G; G01; G01L; G01L5/00; G01L5/0009; G01L5/0023; F; F16; F16C; F16C19/00; F16C19/52; F16C19/522; G01L1/00; G01L1/12; G01L1/125; G01L1/127; G01L5/16; G01L5/161; G01L5/1627; B; B60; B60G; B60G2204/00; B60G2204/10; B60G2204/11; B60G2204/115; F16C19/02; F16C19/14; F16C19/18; F16C19/181; F16C19/183; F16C19/184; F16C19/187; F16C2326/00; F16C2326/01; F16C2326/02; F16C35/00; F16C35/04; F16C35/06; F16C35/07; F16C35/077
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
147 words
A hub bearing unit for a vehicle wheel comprising a rotatable first ring connectable to the wheel and a non-rotatable second ring connectable to the vehicle chassis, the second ring including a cylindrical portion and a radial flange for connection to the vehicle chassis, bearing means radially disposed between the first and second rings enabling the first ring to rotate relative to the second ring about an axis of rotation, and a self-contained non-rotatable measuring unit secured fixedly relative to the second ring for measuring external forces applied to the wheel, the self-contained measuring unit comprising an annular carrier and a plurality of force sensors fixedly connected in the carrier in predetermined orientations relative to the axis of rotation, the force sensors being circumferentially spaced apart in the carrier, the carrier and force sensors being axially insertable and removable as a unit relative to the second ring.
Claim 2
Dependent Claim
24 words
A hub bearing unit according to claim 1, wherein the carrier is molded of plastic, the force sensors being integrally molded with the carrier.
Claim 3
Dependent Claim
26 words
A hub bearing unit according to claim 2 including electrical conduits connected to the force sensors and being integrally molded with the carrier and force sensors.
Claim 4
Dependent Claim
35 words
A hub bearing unit according to claim 3 including a signal processing unit to which the conduits are connected, the signal processing unit being integrally molded with the carrier, the force sensors, and the conduits.
Claim 5
Dependent Claim
24 words
A hub bearing unit according to claim 1, wherein the carrier includes through-holes for receiving bolts to secure the carrier to the second ring.
Claim 6
Dependent Claim
27 words
A hub bearing unit according to claim 1, erein the first ring includes a cylindrical portion arranged telescopingly relative to the cylindrical portion of the second ring.
Claim 7
Dependent Claim
16 words
A hub bearing unit according to claim 1, wherein each force sensor includes a strain gauge.
Claim 8
Dependent Claim
16 words
A hub bearing unit according to claim 1, wherein each force sensor includes amorphous, magneto-elastic material.
Claim 9
Dependent Claim
64 words
A hub bearing unit according to claim 8, wherein the force sensor includes a measuring body having a surface oriented parallel to the axis of rotation, the amorphous magneto-elastic material being disposed on the surface and defining an easy axis oriented at an acute angle with respect to the axis of rotation, and an electrical pick-up coil wound around the body and the surface.
Claim 10
Dependent Claim
64 words
A hub bearing unit according to claim 9, wherein the measuring body comprises a part of a measuring element having four such measuring bodies each having a surface with amorphous magneto-elastic material mounted thereon, the measuring element having an attachment hole extending therethrough for receiving a fastener, the four surfaces arranged in mutually parallel pairs spaced apart diametrically with respect to the attachment hole.
Claim 11
Dependent Claim
24 words
A hub bearing unit according to claim 10 including an electrical excitation coil surrounding all of the pick-up coils for generating a magnetic field.
Claim 12
Dependent Claim
20 words
A hub bearing unit according to claim 1, wherein the carrier is connected to the second ring by a press-fit.
Claim 13
Dependent Claim
43 words
A hub bearing unit according to claim 12, wherein the carrier comprises a carrier ring and a plurality of circumferentially spaced projections extending parallel to the axis, the second ring including apertures for receiving the projections, the force sensors mounted on respective projections.
Claim 14
Dependent Claim
48 words
A hub bearing unit according to claim 13, wherein the bearing means comprises two annular rows of rotary bearing elements, the rows being spaced apart in a direction parallel to the axis, each projection including one force sensor disposed equidistantly from the two rows of rotary bearing elements.
Claim 15
Dependent Claim
45 words
A hub bearing unit according to claim 14, wherein the bearing means comprises two annular rows of rotary bearing elements, the rows being spaced apart in a direction parallel to the axis, each projection including two force sensors situated adjacent respective ones of the rows.
Claim 16
Dependent Claim
33 words
A hub bearing unit according to claim 12, wherein the carrier comprises a carrier ring having a cylindrical surface disposed coaxially to the axis, the force sensors being mounted on the cylindrical surface.
Claim 17
Dependent Claim
53 words
A hub bearing unit according to claim 1, wherein the carrier includes a plurality of attachment holes extending therethrough for receiving attachment bolts, the carrier being attached by press-fit to the attachment bolts, there being a plurality of circumferentially spaced sets of force sensors, each set extending annularly around its respective attachment bolt.
Claim 18
Dependent Claim
36 words
A hub bearing unit according to claim 1, wherein the first ring includes brake means, and a thin heat shield formed of a high heat dissipating material arranged intermediate the measuring unit and the brake means.
Claim 19
Dependent Claim
111 words
A hub bearing unit for a vehicle wheel having brake means comprising a rotatable first ring connectable to the wheel and a non-rotatable second ring connectable to the vehicle chassis, the second ring including a cylindrical portion and a radial flange for connection to the vehicle chassis, bearing means radially disposed between the first and second rings enabling the first ring to rotate relative to the second ring about an axis of rotation, measuring means secured fixedly relatively to the second ring for measuring external forces applied to the wheel, and a thin heat shield formed of a high heat dissipating material arranged intermediate the measuring means and the brake means.
References Cited (Backward Citations)
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