WO1987000290A1 - Arrangement for fixing an impulse wheel - Google Patents

Arrangement for fixing an impulse wheel Download PDF

Info

Publication number
WO1987000290A1
WO1987000290A1 PCT/SE1986/000305 SE8600305W WO8700290A1 WO 1987000290 A1 WO1987000290 A1 WO 1987000290A1 SE 8600305 W SE8600305 W SE 8600305W WO 8700290 A1 WO8700290 A1 WO 8700290A1
Authority
WO
WIPO (PCT)
Prior art keywords
wheel
impulse wheel
impulse
fixed
machine element
Prior art date
Application number
PCT/SE1986/000305
Other languages
French (fr)
Inventor
Mauritz NORDSTRÖM
Laszlo Tokay
Original Assignee
Saab-Scania Aktiebolag
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 Saab-Scania Aktiebolag filed Critical Saab-Scania Aktiebolag
Publication of WO1987000290A1 publication Critical patent/WO1987000290A1/en
Priority to GB8702893A priority Critical patent/GB2188153B/en
Priority to GB878702893A priority patent/GB8702893D0/en

Links

Classifications

    • 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
    • G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
    • G01P3/481—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals
    • G01P3/488—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals delivered by variable reluctance detectors
    • 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
    • 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
    • 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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • F16J15/3248—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports
    • F16J15/3252—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports with rigid casings or supports
    • F16J15/3256—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports with rigid casings or supports comprising two casing or support elements, one attached to each surface, e.g. cartridge or cassette seals
    • 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

Definitions

  • the present invention relates to an arrangement for fixing an impulse wheel to a rotatable machine element journalled relative to a fixed machine element.
  • impulse wheels together with suitable sensor means to indicate rotary movement of a journalled machine element.
  • anti-block braking systems to individually sense the speed of the vehicle wheels.
  • problems arise, however, when including such impulse wheels in the vehicle, especially in the front wheels, since it is difficult to make room for these impulse wheels without increasing the wheel width.
  • the fixing of the impulse wheel to the wheel also requires that the wheel be machined and adapted to a lesser or greater extent, which thereby increases costs.
  • the present invention intends to eliminate these disadvantages of known designs and provides a simple and inexpensive arrangement for fixing the impulse wheel to the vehicle wheel, which does not require any increase in the vehicle wheel width.
  • the invention can also be used in other fields in addition to the automo ⁇ tive industry to solve similar problems. According to the invention this is achieved by the impulse wheel being non-rotatably fixed to a ring which is firmly fixed to the rotatable machine element and is included in an axle seal between the machine elements, the impulse wheel and the axle seal forming a unit for assembly.
  • Fig 1 shows a cross section of a vehicle wheel mounting
  • Fig 2 shows on a larger scale a cross section of an impulse wheel and a sealing ring in a vehicle wheel mounting.
  • Fig 1 shows a vehicle front wheel mounting. It comprises a partially shown spindle 1 with a journal 2 on which a wheel hub 3 is mounted via two conical roller bearings 4. One of the vehicle wheels (not shown) is fixed to the wheel hub 3 in a conventional manner. Between the wheel hub 3 and the spindle 1 there is disposed an axle seal 5, which has a metallic outer ring 6 and is forced into an annular cavity 7 in one side surface of the wheel hub 3.
  • the outer ring 6 comprises two metal rings 6 which are stamped together to provide a U-shaped cross section.
  • the axle seal 5 also comprises an inner ring 8 which is forced on to a wear ring 9 forced onto the journal 2.
  • the inner ring 8 is made of elastic material and is radially reinforced by a metal reinforcing ring 10. An internal lip 11 of the inner ring 8 is pressed by an annular spring 12 radially outwards to sealing contact with the outer ring 6 at the same time as the outer ring 6 is allowed to slip relative to the lip 11.
  • an impulse wheel 13 is fixed to the side surface of the outer ring 6, for example by means of a number of spot welds.
  • the impulse wheel 13 is in the form of an annular metal disc with a plurality of axial teeth 15 on the side facing the spindle 1.
  • the axle seal 5 is forced into the cavity 7 in the wheel hub 3, so that an edge of the impuls wheel 13 extending radially outside the outer ring 6 abuts an axial side surface of the wheel hub 3.
  • the axial thickness of the impulse wheel 13 is at least twice that of the sheet metal material which the outer ring 6 is made of.
  • the impulse wheel 13 cooperates with a magnetic sensor 16 fixed in a cavity in the spindle 1 and included in an arrangement for sensing the rotational speed of each wheel hub 3 and thus each vehicle wheel.
  • the sensor 16 can sense the speed at which the teeth of the impulse wheel 13 pass and can send an output signal proportional to the rotational speed.
  • the impulse wheel 13 is made as a disc, it can be made sufficiently thick and rigid that axial throw of the impulse wheel can be kept to a minimum. In order to enable the sensor 16 to sense the teeth 15 with sufficient accuracy, it is quite important that the sensor 16 be mounted sufficiently close to the impulse wheel 13.
  • the arrangement according to the invention also makes it possible to mount the impulse wheel 13 without it taking up any extra space in the axial direction. By fixing the impulse wheel 13 to the seal 5 by pre-assembly, it is assured that the impulse wheel 13 will be correctly located, in addition to simplifying mounting.
  • the seal 5 is a standard component which can be manufactured in long series at relatively low cost.
  • the manufacture of the impulse wheel 13 is also simple and inexpensive.
  • a very simple and inexpensive design is provided which still meets high requirements of functional reliability.
  • the arrangement does not require any special machining of the wheel hub 3. If the vehicle is not to be equipped with a rotational speed sensor, a conventional seal without impulse wheel can still be put in place.
  • the invention can also be used with advantage in ways other than those described in the above example.
  • the invention can be used in any machine element rotatably journalled on a fixed machine element.
  • the impulse wheel can have a plurality of magnets for example.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Transportation (AREA)
  • Sealing With Elastic Sealing Lips (AREA)
  • Rolling Contact Bearings (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)

Abstract

Arrangement for fixing an impulse wheel (13) to a rotatable machine element (3) journalled relative to a fixed machine element (2). Such an impulse wheel (13) can be used, for example, for sensing rotational speed of a vehicle wheel. Practical difficulties are usually encountered, however, in finding suitable space for mounting the impulse wheel (13). According to the invention, this problem is solved by having the impulse wheel (13) be non-rotatably fixed to a ring (6) which is solidly joined to the rotatable machine element (3) and is included in an axle seal (5) between the machine elements (2, 3), and the impulse wheel (13) and the axle seal (5) forming a unit for assembly.

Description

Arrangement for fixing an Impulse wheel
The present invention relates to an arrangement for fixing an impulse wheel to a rotatable machine element journalled relative to a fixed machine element. Within a number of technological fields, it is common practice to use impulse wheels together with suitable sensor means to indicate rotary movement of a journalled machine element. In the automotive industry, such impulse wheels are used in so-called anti-block braking systems to individually sense the speed of the vehicle wheels. Problems arise, however, when including such impulse wheels in the vehicle, especially in the front wheels, since it is difficult to make room for these impulse wheels without increasing the wheel width. The fixing of the impulse wheel to the wheel also requires that the wheel be machined and adapted to a lesser or greater extent, which thereby increases costs.
The present invention intends to eliminate these disadvantages of known designs and provides a simple and inexpensive arrangement for fixing the impulse wheel to the vehicle wheel, which does not require any increase in the vehicle wheel width. The invention can also be used in other fields in addition to the automo¬ tive industry to solve similar problems. According to the invention this is achieved by the impulse wheel being non-rotatably fixed to a ring which is firmly fixed to the rotatable machine element and is included in an axle seal between the machine elements, the impulse wheel and the axle seal forming a unit for assembly.
In addition to removing the above-mentioned disadvantages of known designs, the invention has further advantages, which will be evident from the following description of an advantageous embodiment of the invention. The embodiment will be described as an example with reference to the accompanying drawings, of which
Fig 1 shows a cross section of a vehicle wheel mounting, and
Fig 2 shows on a larger scale a cross section of an impulse wheel and a sealing ring in a vehicle wheel mounting.
The accompanying Fig 1 shows a vehicle front wheel mounting. It comprises a partially shown spindle 1 with a journal 2 on which a wheel hub 3 is mounted via two conical roller bearings 4. One of the vehicle wheels (not shown) is fixed to the wheel hub 3 in a conventional manner. Between the wheel hub 3 and the spindle 1 there is disposed an axle seal 5, which has a metallic outer ring 6 and is forced into an annular cavity 7 in one side surface of the wheel hub 3. The outer ring 6 comprises two metal rings 6 which are stamped together to provide a U-shaped cross section. The axle seal 5 also comprises an inner ring 8 which is forced on to a wear ring 9 forced onto the journal 2. The inner ring 8 is made of elastic material and is radially reinforced by a metal reinforcing ring 10. An internal lip 11 of the inner ring 8 is pressed by an annular spring 12 radially outwards to sealing contact with the outer ring 6 at the same time as the outer ring 6 is allowed to slip relative to the lip 11.
In accordance with the present invention, an impulse wheel 13 is fixed to the side surface of the outer ring 6, for example by means of a number of spot welds. The impulse wheel 13 is in the form of an annular metal disc with a plurality of axial teeth 15 on the side facing the spindle 1. During assembly, the axle seal 5 is forced into the cavity 7 in the wheel hub 3, so that an edge of the impuls wheel 13 extending radially outside the outer ring 6 abuts an axial side surface of the wheel hub 3. Preferably, the axial thickness of the impulse wheel 13 is at least twice that of the sheet metal material which the outer ring 6 is made of. The impulse wheel 13 cooperates with a magnetic sensor 16 fixed in a cavity in the spindle 1 and included in an arrangement for sensing the rotational speed of each wheel hub 3 and thus each vehicle wheel. As the wheel hub 3 rotates, so does the outer ring 6 of the seal 5 as well as the impulse wheel 13 fixed thereto. Thus, the sensor 16 can sense the speed at which the teeth of the impulse wheel 13 pass and can send an output signal proportional to the rotational speed. By virtue of the fact that the impulse wheel 13 is made as a disc, it can be made sufficiently thick and rigid that axial throw of the impulse wheel can be kept to a minimum. In order to enable the sensor 16 to sense the teeth 15 with sufficient accuracy, it is quite important that the sensor 16 be mounted sufficiently close to the impulse wheel 13. The arrangement according to the invention also makes it possible to mount the impulse wheel 13 without it taking up any extra space in the axial direction. By fixing the impulse wheel 13 to the seal 5 by pre-assembly, it is assured that the impulse wheel 13 will be correctly located, in addition to simplifying mounting.
Disregarding the impulse wheel 13, the seal 5 is a standard component which can be manufactured in long series at relatively low cost. The manufacture of the impulse wheel 13 is also simple and inexpensive. In summary, a very simple and inexpensive design is provided which still meets high requirements of functional reliability. Also the arrangement does not require any special machining of the wheel hub 3. If the vehicle is not to be equipped with a rotational speed sensor, a conventional seal without impulse wheel can still be put in place. Within the scope of the accompanying patent claims, the invention can also be used with advantage in ways other than those described in the above example. For example, the invention can be used in any machine element rotatably journalled on a fixed machine element. Instead of being made with teeth, the impulse wheel can have a plurality of magnets for example.

Claims

*• 1. Arrangement for fixing an impulse wheel (13) to a rotatable machine element (3) journalled relative to a fixed machine element (2), characterized in that the impulse wheel (13) is non-rotatably fixed to a 5 ring (6), which is firmly fixed to the rotatable machine element (3) and is included in an axle seal (5) between the machine elements (2,3) and in that the impulse wheel (13) and the axle seal (5) form a unit for assembly. 10
2. Arrangement according to Claim 1, characterized in that the impulse wheel (13) is fixed to the ring (6) by means of a plurality of spot welds.
3. Arrangement according to Claim 2, in which the rotatable machine element consists of a vehicle
15 wheel hub (3) and the fixed machine element (2) consists of a fixed axle (2), characterized in that the impulse wheel (13) consists of a disc with axial teeth (15).
4. Arrangement according to Claim 3,
20 characterized in that the impulse wheel (13) is fixed to an axial side surface of the ring (6).
5. Arrangement according to Claim 4, characterized in that the axial thickness of the impulse wheel (13) is at least twice the thickness of
25 the material which the ring (6) is made of.
PCT/SE1986/000305 1985-07-01 1986-06-24 Arrangement for fixing an impulse wheel WO1987000290A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB8702893A GB2188153B (en) 1985-07-01 1987-02-09 An assembly of two relatively rotatable machine elements
GB878702893A GB8702893D0 (en) 1985-07-01 1987-02-10 Fixing impulse wheel

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8503255A SE450477B (en) 1985-07-01 1985-07-01 ARRANGEMENTS FOR ATTACHING A IMPULSE WHEEL TO A ROTABLE MACHINE ELEMENT
SE8503255-5 1985-07-01

Publications (1)

Publication Number Publication Date
WO1987000290A1 true WO1987000290A1 (en) 1987-01-15

Family

ID=20360756

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1986/000305 WO1987000290A1 (en) 1985-07-01 1986-06-24 Arrangement for fixing an impulse wheel

Country Status (4)

Country Link
DE (1) DE3690351T1 (en)
GB (1) GB2188153B (en)
SE (1) SE450477B (en)
WO (1) WO1987000290A1 (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2621365A1 (en) * 1987-10-03 1989-04-07 Skf Gmbh BEARING HAVING ANGULAR CODING
EP0400204A1 (en) * 1989-06-02 1990-12-05 Koyo Seiko Co., Ltd. A wheel bearing apparatus provided with a wheel rotation speed detector
EP0418532A1 (en) * 1989-09-12 1991-03-27 IVECO FIAT S.p.A. Assembly for connecting a wheel to a vehicle axle
GB2204647B (en) * 1987-05-08 1991-11-13 Riv Officine Di Villar Perosa An improved seal screen in particular for a rolling element bearing, and a system for detecting the speed of a rotating member making use of this seal screen
EP0532011A1 (en) * 1991-09-12 1993-03-17 Uchiyama Manufacturing Corp. Pack seal
EP0565771A1 (en) * 1992-04-15 1993-10-20 Firma Carl Freudenberg Hub seal
EP0595728A1 (en) * 1992-10-30 1994-05-04 Snr Roulements Sensor system for antilock brakes
US5527114A (en) * 1994-03-23 1996-06-18 Nsk Ltd. Tapered roller bearing with rotational speed detection unit
FR2762056A1 (en) * 1997-04-15 1998-10-16 Skf France ROLLING BEARING WITH INFORMATION SENSOR
DE19827073A1 (en) * 1998-06-18 2000-01-05 Schmitz Anhaenger Fahrzeugbau ABS sensor for a heavy goods vehicle non-drive axle with a disk brake
DE4231332C2 (en) * 1991-09-19 2002-10-10 Nsk Ltd Bearings with a passive pulse generator ring

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5458420A (en) * 1993-12-10 1995-10-17 The Timken Company Bearing seal with encoder
US5470157A (en) * 1994-03-29 1995-11-28 The Timken Company Bearing seal for sensing angular velocity
DE19532328A1 (en) * 1995-09-01 1997-03-06 Teves Gmbh Alfred Wheel bearing sensor for rotational and angular movement measurement for vehicle wheels
DE19813594B4 (en) * 1998-03-27 2006-06-01 Volkswagen Ag Method for producing a two-piece donor wheel

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1911513A1 (en) * 1968-04-18 1969-12-11 Kelsey Hayes Co RPM measuring device
US3503653A (en) * 1967-03-13 1970-03-31 Eaton Yale & Towne Velocity sensing anti-skid braking system
US3716788A (en) * 1969-12-23 1973-02-13 Aisin Seiki Tachometer generator
GB1470487A (en) * 1974-06-13 1977-04-14 Bendix Corp Magnetic speed sensor with compensating pole

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5793861U (en) * 1980-11-29 1982-06-09
SE452639B (en) * 1984-12-20 1987-12-07 Saab Scania Ab ARRANGEMENTS FOR A COMBUSTION ENGINE FOR CONNECTING A DRUG SENSOR
GB8502944D0 (en) * 1985-02-06 1985-03-06 Lucas Ind Plc In-axle vehicle wheel speed sensing device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3503653A (en) * 1967-03-13 1970-03-31 Eaton Yale & Towne Velocity sensing anti-skid braking system
DE1911513A1 (en) * 1968-04-18 1969-12-11 Kelsey Hayes Co RPM measuring device
US3716788A (en) * 1969-12-23 1973-02-13 Aisin Seiki Tachometer generator
GB1470487A (en) * 1974-06-13 1977-04-14 Bendix Corp Magnetic speed sensor with compensating pole

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2204647B (en) * 1987-05-08 1991-11-13 Riv Officine Di Villar Perosa An improved seal screen in particular for a rolling element bearing, and a system for detecting the speed of a rotating member making use of this seal screen
FR2621365A1 (en) * 1987-10-03 1989-04-07 Skf Gmbh BEARING HAVING ANGULAR CODING
EP0400204A1 (en) * 1989-06-02 1990-12-05 Koyo Seiko Co., Ltd. A wheel bearing apparatus provided with a wheel rotation speed detector
EP0418532A1 (en) * 1989-09-12 1991-03-27 IVECO FIAT S.p.A. Assembly for connecting a wheel to a vehicle axle
EP0532011A1 (en) * 1991-09-12 1993-03-17 Uchiyama Manufacturing Corp. Pack seal
DE4231332C2 (en) * 1991-09-19 2002-10-10 Nsk Ltd Bearings with a passive pulse generator ring
EP0565771A1 (en) * 1992-04-15 1993-10-20 Firma Carl Freudenberg Hub seal
EP0595728A1 (en) * 1992-10-30 1994-05-04 Snr Roulements Sensor system for antilock brakes
US5527114A (en) * 1994-03-23 1996-06-18 Nsk Ltd. Tapered roller bearing with rotational speed detection unit
FR2762056A1 (en) * 1997-04-15 1998-10-16 Skf France ROLLING BEARING WITH INFORMATION SENSOR
EP0872652A1 (en) * 1997-04-15 1998-10-21 Skf France Rolling contact bearing with informations sensor
US6094046A (en) * 1997-04-15 2000-07-25 Skf France Rolling bearing with information sensor welded to race
DE19827073A1 (en) * 1998-06-18 2000-01-05 Schmitz Anhaenger Fahrzeugbau ABS sensor for a heavy goods vehicle non-drive axle with a disk brake
DE19827073C2 (en) * 1998-06-18 2001-05-10 Schmitz Anhaenger Fahrzeugbau Sensed non-driven truck axle with a disc brake

Also Published As

Publication number Publication date
DE3690351T1 (en) 1987-05-14
GB2188153A (en) 1987-09-23
SE450477B (en) 1987-06-29
GB2188153B (en) 1990-02-21
SE8503255D0 (en) 1985-07-01
SE8503255L (en) 1987-01-02

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