GB2316487A - A rolling member bearing with a rotational speed transducer - Google Patents

A rolling member bearing with a rotational speed transducer Download PDF

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Publication number
GB2316487A
GB2316487A GB9716754A GB9716754A GB2316487A GB 2316487 A GB2316487 A GB 2316487A GB 9716754 A GB9716754 A GB 9716754A GB 9716754 A GB9716754 A GB 9716754A GB 2316487 A GB2316487 A GB 2316487A
Authority
GB
United Kingdom
Prior art keywords
rolling member
sensor
mating surface
bearing
member bearing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
GB9716754A
Other versions
GB9716754D0 (en
Inventor
Der Knokke Henri Van
Martin Grehn
Harald Merklein
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
IHO Holding GmbH and Co KG
Original Assignee
FAG OEM und Handel AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by FAG OEM und Handel AG filed Critical FAG OEM und Handel AG
Publication of GB9716754D0 publication Critical patent/GB9716754D0/en
Publication of GB2316487A publication Critical patent/GB2316487A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/17—Using electrical or electronic regulation means to control braking
    • B60T8/171—Detecting parameters used in the regulation; Measuring values used in the regulation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • B60T8/321—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration deceleration
    • B60T8/329—Systems characterised by their speed sensor arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/58—Raceways; Race rings
    • F16C33/583—Details of specific parts of races
    • F16C33/586—Details of specific parts of races outside the space between the races, e.g. end faces or bore of inner ring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • F16C33/784—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race
    • F16C33/7843—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race with a single annular sealing disc
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • F16C33/7889—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to an inner race and extending toward the outer race
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C41/00—Other accessories, e.g. devices integrated in the bearing not relating to the bearing function as such
    • F16C41/007—Encoders, e.g. parts with a plurality of alternating magnetic poles
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
    • G01P3/443—Devices characterised by the use of electric or magnetic means for measuring angular speed mounted in bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
    • F16C19/06—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C43/00—Assembling bearings
    • F16C43/04—Assembling rolling-contact bearings

Abstract

A rolling member bearing with a rotational speed transducer comprising a pulse generating device 4 which rotates with the rolling member 1 and a sensor 5 which opposes the pulse generator and is separated by an air gap. The sensor head 6 is fixed to an attatchment 9 by a member with an elastically deformable region 10. Opposing mating surfaces 7, on the sensor head and 8 on a stationary part of the bearing are used to link the sensor and pulse generator whilst maintaining a substantially constant air gap between the two.

Description

2316487 A rolling member bearing with a rotational speed capture device
The invention relates to a rolling member bearing according to the preamble of claim 1. 5 With many rolling member bearings there is presently a need to provide them with a device for capture of rotational speed. It is thus currently state of the art to provide wheel bearings of motor vehicles with a means of speed recording, for instance to derive the speed from the signals received and to use this to control the anti-lock braking system. A problem here is that low rotational speeds also have to be captured and the sensor has to be positioned very exactly and very close to the pulse generator wheel or coding disc. This alignment and positioning is carried out using sensor gauges, adjusting discs or washers and/or requires very precise working of all parts, surfaces and bores which are necessary for the geometry of the sensor device surfaces. This holds especially where surrounding constructions are split (housings or the like).
Because of this high requirement for precision an attempt has been made to arrange the pulse generator wheel and the sens or within or on the rolling member bearing (see DE 25 05 802 Al) since rolling member bearings are worked with high precision. The downside of this is that the rolling member bearings are expensive. Further, this requires precise assembly and adjustment between the sensor and the pulse generator ring.
DE 44 00 773 A1 proposes that an additional single thrust bearing, pretensioned by a spring and in the form of an angular bearing, be provided which bears and guides the pulse ring and the sensor. This arrangement, however, is also elaborate and expensive. Here too it is necessary for careful alignment of the sensor relative to the pulse ring.
Finally, EP 0 449 671 A2 discloses an arrangement with a bearing with magnetic field sensors in which the sensors are arranged on a flexible arm of a sensor support, with the sensor in continuous contact with the revolving magnet pulse ring. Such a solution not only means wear of the sensor support but also increases bearing friction and the temperature.
The aim of the invention is therefore to develop a rolling member bearing of the aforementioned construction such that any positioning errors of the surrounding parts are offset and changes in their dimensions during operation (temperature expansion, ring migration or the like) are compensated for, and so that simple assembly and adjustment are possible. This aim is addressed by the characterising features of claim 1. Claims 2 to 5 yield advantageous further developments. 25 The invention ensures that the sensor is selfadjusting upon fitting and adapts to the geometric changes in the sensor support surfaces due to temperature expansion, elastic and plastic deformation of the overall -3construction and even a twisting of the outer ring in the housing (ring migration). There is no need for very precise working of the corresponding parts and surfaces.
The mating surface on the sensor head and the correspondingly-formed opposing mating surface together form a trap device for the sensor and guide it during assembly into its correct position at the correct distance from the pulse generator disc and fix it there. This simplifies assembly considerably.
Because the opposing mating surface is continuous in a circumferential direction the sensor is always correctly positioned relative to the pulse generator disc even in the event of ring migration or a twisting of the opposing mating surface. The elastic region enables changes in dimensions of the surrounding parts during operation to be compensated for. The necessary running smoothness is ensured anyway for rolling member bearings and their bearing seats, thus enabling an arrangement of the opposing mating surface in the sealing disc.
An example embodiment of the invention will now be described in greater detail.
Figure 1 is a schematic of a rolling member bearing in accordance with the invention viewed from the side.
Figure 2 is a schematic of a rolling member bearing in accordance with the invention viewed from the side, with the opposing mating surface integrated into the seal.
-4 Figure 3 is a schematic of a rolling member bearing in accordance with the invention viewed from the side, with the opposing mating surface constituted by a grove in the outer ring.
The rolling member bearing according to Figure 1 comprises a rotating inner ring 1, a stationary outer ring 2 and rolling members 3 arranged between the rings. The pulse generator disc 4 is arranged next to the inner ring 1 and can take the form of a gear wheel or perforated disc or can have markings in the form of magnetised regions or magnets. The sensor 5 is arranged opposite the pulse generator disc 4 on the sensor head 6 and is provided with a mating surface 7 which acts in concert with an opposing mating surface 8 in the outer ring 2. To this end an is elastically-deformable region 10 is provided between the sensor head 6 and the sensor attachment 9 and enables aligning errors and changes in dimensions to be compensated for.
As shown in Figure 2, the opposing mating surface 8 can also be integrated into a sealing disc 11 which allows the use of standard bearings. As shown in Figure 3, the opposing mating surface 8 can also be formed by a groove of the outer ring 2 in which the sensor head 6 is guided radially. 25 The sensor mounting 9 can be achieved in various ways, for example, in the housing 12. The elastic region 10 can similarly be arranged differently, for instance with the use of an elastic material (rubber) or through an elastic -5deformation conferred by the arrangement of the sensor support.

Claims (6)

Claims:
1. A rolling member bearing with a rotational speed capture device, wherein a pulse generator arranged on the rotating part of the bearing lies opposite a sensor which is arranged on the stationary bearing part or the housing, in which an elastically-deformable region is provided between the sensor head and the sensor attachment and can compensate for positioning errors and that the sensor head is provided with a mating surface which works in conjunction with its opposing mating surface and aligns or positions the sensor with positive fit.
2. A rolling member bearing according to claim 1, in which the opposing mating surface is in the bearing seal.
3. A rolling member bearing according to claim 1, in is which the opposing mating surface is located next to the stationary bearing ring.
4. A rolling member bearing according to claim 1, in which the opposing mating surface is located on the stationary bearing ring.
5. A rolling member bearing according to claim 1, in which the opposing mating surface is continuous in the circumferential direction.
6. A rolling member bearing substantially as described herein with reference to and as illustrated in the accompanying drawings.
GB9716754A 1996-08-14 1997-08-07 A rolling member bearing with a rotational speed transducer Withdrawn GB2316487A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19632715A DE19632715A1 (en) 1996-08-14 1996-08-14 Rolling bearing with a speed detection device

Publications (2)

Publication Number Publication Date
GB9716754D0 GB9716754D0 (en) 1997-10-15
GB2316487A true GB2316487A (en) 1998-02-25

Family

ID=7802587

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9716754A Withdrawn GB2316487A (en) 1996-08-14 1997-08-07 A rolling member bearing with a rotational speed transducer

Country Status (4)

Country Link
DE (1) DE19632715A1 (en)
FR (1) FR2752447A1 (en)
GB (1) GB2316487A (en)
IT (1) IT1294276B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011203203A (en) * 2010-03-26 2011-10-13 Nsk Ltd Physical quantity measuring device of rolling bearing unit
WO2020208688A1 (en) * 2019-04-08 2020-10-15 三菱電機ビルテクノサービス株式会社 Preload adjustment method

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2790800B1 (en) 1999-03-10 2001-04-20 Roulements Soc Nouvelle PREASSEMBLY ASSEMBLY FORMING A SEAL WITH INCORPORATED ENCODER AND BEARING OR BEARING COMPRISING SUCH AN ASSEMBLY
FR2836191B1 (en) * 2002-02-18 2004-07-09 Skf France INSTRUMENT BEARING
DE102005059393A1 (en) * 2005-12-13 2007-06-14 Schaeffler Kg Wheel bearing with sensor
DE102007011897A1 (en) * 2007-03-13 2008-09-18 Zf Friedrichshafen Ag Transmission with a Drehzahlabgriffseinrichtung

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1482778A (en) * 1973-08-10 1977-08-17 Wabco Westinghouse Gmbh Speed sensors for vehicles
GB1521174A (en) * 1975-05-10 1978-08-16 Wabco Westinghouse Gmbh Pick-up device for producing a signal corresponding to a relative rotation between two parts
US5017868A (en) * 1989-04-18 1991-05-21 The Torrington Company Bearing assembly with encoder ring in slidable contact with sensor
US5640087A (en) * 1994-03-08 1997-06-17 The Torrington Company Device for detection of the speed of rotation of a rolling bearing

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3774061A (en) * 1972-06-16 1973-11-20 Rockwell International Corp Wheel speed sensor
US5018384A (en) * 1989-07-21 1991-05-28 Nippon Seiko Kabushiki Kaisha Rotational speed detector
US5017866A (en) * 1990-02-08 1991-05-21 The Torrington Company Magnetic field sensor mounting with sensor arm contacting rotating bearing member

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1482778A (en) * 1973-08-10 1977-08-17 Wabco Westinghouse Gmbh Speed sensors for vehicles
GB1521174A (en) * 1975-05-10 1978-08-16 Wabco Westinghouse Gmbh Pick-up device for producing a signal corresponding to a relative rotation between two parts
US5017868A (en) * 1989-04-18 1991-05-21 The Torrington Company Bearing assembly with encoder ring in slidable contact with sensor
US5640087A (en) * 1994-03-08 1997-06-17 The Torrington Company Device for detection of the speed of rotation of a rolling bearing
EP0671628B1 (en) * 1994-03-08 1998-12-23 Snr Roulements Rotation speed measuring device for rollbearing

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011203203A (en) * 2010-03-26 2011-10-13 Nsk Ltd Physical quantity measuring device of rolling bearing unit
WO2020208688A1 (en) * 2019-04-08 2020-10-15 三菱電機ビルテクノサービス株式会社 Preload adjustment method
CN113272568A (en) * 2019-04-08 2021-08-17 三菱电机大楼技术服务株式会社 Pre-pressure adjusting method
CN113272568B (en) * 2019-04-08 2023-03-31 三菱电机楼宇解决方案株式会社 Pre-pressure adjusting method

Also Published As

Publication number Publication date
DE19632715A1 (en) 1998-02-19
ITMI971775A1 (en) 1999-01-25
IT1294276B1 (en) 1999-03-24
GB9716754D0 (en) 1997-10-15
FR2752447A1 (en) 1998-02-20

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Legal Events

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WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)