GB1558933A - Locking washer - Google Patents

Locking washer Download PDF

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Publication number
GB1558933A
GB1558933A GB25328/77A GB2532877A GB1558933A GB 1558933 A GB1558933 A GB 1558933A GB 25328/77 A GB25328/77 A GB 25328/77A GB 2532877 A GB2532877 A GB 2532877A GB 1558933 A GB1558933 A GB 1558933A
Authority
GB
United Kingdom
Prior art keywords
locking washer
indentations
bearing
housing
washer
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.)
Expired
Application number
GB25328/77A
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.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Publication of GB1558933A publication Critical patent/GB1558933A/en
Expired legal-status Critical Current

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Classifications

    • 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
    • F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
    • F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
    • F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
    • 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
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B17/00—Connecting constructional elements or machine parts by a part of or on one member entering a hole in the other and involving plastic deformation
    • 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
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B21/00—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings
    • F16B21/10—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings by separate parts
    • F16B21/16—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings by separate parts with grooves or notches in the pin or shaft
    • F16B21/18—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings by separate parts with grooves or notches in the pin or shaft with circlips or like resilient retaining devices, i.e. resilient in the plane of the ring or the like; Details
    • 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
    • F16C33/7886—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted outside the gap between the inner and outer races, e.g. sealing rings mounted to an end face or outer surface of a 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
    • F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
    • F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
    • F16C35/042—Housings for rolling element bearings for rotary movement
    • F16C35/045—Housings for rolling element bearings for rotary movement with a radial flange to mount the housing
    • 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

Description

(54) LOCKING WASHER (71) We, SIEMENS AKTIENGESELLSCHAFT, a German Company, of Berlin and Munich, Germany, do hereby declare the invention, for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement: This invention relates to a locking washer for axially fixing a component in its mounting, more particularly but not exclusively for securing a bearing in a bearing housing or on a shaft respectively.
For securing a bearing, in particular a ball bearing in a bearing housing, it is known to screw a bearing cup up against the front face of the bearing or to provide a recess in the bore of the housing in which a ring is inserted which fits against the ball bearing to be secured. A ball bearing can be secured in the bearing housing by simply wedging the outer race of a bearing in the housing.
According to the invention there is provided a locking washer, for use in axially securing a component on a mounting, which washer is provided with one or more indentations arranged so that on deforming the one or more indentation, in a manner tending to eliminate the one or more indentations, a part of the locking washer adjacent the or each of the indentation(s) is displaced radially on the same radius as the indentation to which it is adjacent.
The invention also provides in combination a locking washer according to the invention and a housing and/or a mounting for said washer wherein the housing and/or the mounting is or are provided with one or more weak regions, whereby on deforming the indentations said one or more weak regions are deformed to accommodate the one or more parts of the washer which are displaced radially.
A locking washer according to the present invention is provided with axially directed indentations and by axially flattening the indentations the locking washer can be expanded radially, by an amount dependent on the size of the indentations. Advantageously, these indentations are provided near the circumference of the locking washer. If a locking washer of this type is fitted in a bearing housing, together with a ball bearing, then during assembly the rim of the locking washer can be distorted radially outwards by a simple reverse forming, i.e. by deforming the indentations in a direction which is opposite to the direction in which they were deformed during their original manufacture, or flattening of the indentations, so that the locking washer is locked securely in the bearing housing.
As the indentations can be arranged adjacent the circumference of the locking washer the radial distortion of the locking washer helps prevent any abrasive actions with the subsequent formation of shavings or cuttings.
In order that the locking washer is held in its mounting, for example a bearing housing, as securely as possible, it is advantageous that the bearing housing is formed at least in the regions corresponding to the region of radial enlargement of the locking washer in such a way that the radial enlargements of the locking washer engage with the bearing housing or the shaft not only in a force locking manner but also in a form locking manner. Form locking is achieved by having the bearing housing distorted as well as the locking washer such that the bearing housing has an opposite profile to and engages with the periphery of the locking washer. Conveniently the bearing housing is formed of material weaker in comparison to that of the locking washer or at least the regions of the bearing housing corresponding to the indentations of the locking washer are formed of a weaker material.Alternatively the bearing housing can be cut away, so as to provide weak points in the regions corresponding to the indentations of the locking washer.
For a better understanding of the present invention, and to show more clearly how the same may be carried into effect, reference will now be made, by way of example, to the accompanying drawing in which: Figure 1 shows a cross-section along the lines A, B of Figure 2 of a locking washer according to the present invention; Figure 2 shows a plan view of a locking washer according to the present invention; Figure 3 shows a cross-section of part of a locking washer according to the invention, a ball bearing, a shaft and a bearing housing shown in Figure 4, the locking washer being shown with the indentation reversed the original section of one indentation is shown by the dotted lines; Figure 4 shows a view along the axis of the shaft of the components of Figure 3 with the bearing mounted on the shaft and the bear ing being held in a bearing housing by a lock ing washer;; Figure 5 shows a partial cross-section of a locking washer, a bearing housing, a ball bearing, and a shaft, the bearing being shown with its indentations reversed so as to engage with a recess in the bearing housing the orig inal section of one indentation being shown by dotted lines; and Figure 6 shows a cross-section of a locking washer according to another embodiment of the present invention, a bearing housing, a ball bearing, and a shaft, the bearing being shown with its indentations reversed so as to engage with a recess in the shaft, and the original section of the indentations being shown by dotted lines.
Figures 1 and 2 show a locking washer 2 according to the invention in which is pro vided axially directed indentations 21-26, evenly distributed around the circumference of the locking washer. The indentations 21-26 do not extend right to the edge of the washer 2. By the axial distortion (reverse forming) of the indentations 21-26 of the locking washer 2 the locking washer 2 is enlarged radially outwards in the rgion of the indentations 21-26. as indicated by the curved dotted lines in Figure 4 for example, so that the locking washer 2 can be secured in a mounting.
In the Figures 3 and 4 the locking washer 2 secures a ball bearing 3 in a bearing housing 1. First, the bal bearing 3 is mounted in the bearing housing, then the locking washer 2 is brought to bear against the outer ring of the ball bearing 3 and, by means of axial pressure the indentations 21-26 are reverse formed.
The pressure also forces the bearing back against the right shoulder. The reverse dis tortion of the indentations 21-26 expands the locking washer 2 radially, which secures the locking washer 2 and the bearing 3. The bear ing housing 3 shown in Figures 3 and 4 is provided with weak points 11, so that the locking washer 2 can be mounted even more securely. The weak points 11 prevent the seat for the bearing 3 being distorted by the expansion of the locking washer 2.
The axial load on the bearing seat and also the necessary force for the reverse distortion of the indentations of the locking washer is determined by the number of indentations in the locking washer 2 and the arrangement and nature of the weak points in the bearing housing.
Figure 6 shows a ball bearing 3 secured on a shaft 4, whereby the locking washer 2 bears against the inner bearing ring of the ball bearing 3, after the bearing 3 has been premounted on the shaft. The locking washer 2 is provided in its inner peripheral region with indentations which can be distorted back by axial pressure acting in the direction of the arrow and enlarging the locking washer radially inwards in the region of the indentations, so that it engages in a recess 41 in the shaft 4. In a similar way, a recess 14 may also be provided in a bearing housing 1 as shown in Figure 5, whereby, when the indentations provided in an outer peripheral area are reverse formed, the radially enlarged regions of the locking washer 2 engage with the recess 14 and axially secure the ball bearing 3 against a shoulder of the bearing housing 1.
Conveniently, the locking washer according to the invention can be used simultaneously as a grease or dust shield for the ball bearing 3.
WHAT WE CLAIM IS: 1. A locking washer, for use in axially securing a component on a mounting, which washer is provided with one or more indentations arranged so that on deforming the one or more indentations, in a manner tending to eliminate the one or more indentations, a part of the locking washer adjacent the or each of the indentation(s) is displaced radially on the same radius as the indentation to which it is adjacent.
2. A locking washer as claimed in claim 1 wherein the indentations are provided in a radially outer peripheral area.
3. A locking washer as claimed in claim 1 or 2, wherein the indentations are distributed around the circumference of the locking washer.
4. A locking washer as claimed in claim 1, wherein the indentations are distributed around the inner periphery of the locking washer.
5. A locking washer substantially as hereinbefore described with reference to, and as shown in, the accompanying drawings.
6. In combination a locking washer as claimed in any of claims 1 to 5, and a housing and/or a mounting for said washer wherein the housing and/or the mounting is or are provided with one or more weak regions,
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (12)

  1. **WARNING** start of CLMS field may overlap end of DESC **.
    the indentations of the locking washer.
    For a better understanding of the present invention, and to show more clearly how the same may be carried into effect, reference will now be made, by way of example, to the accompanying drawing in which: Figure 1 shows a cross-section along the lines A, B of Figure 2 of a locking washer according to the present invention; Figure 2 shows a plan view of a locking washer according to the present invention; Figure 3 shows a cross-section of part of a locking washer according to the invention, a ball bearing, a shaft and a bearing housing shown in Figure 4, the locking washer being shown with the indentation reversed the original section of one indentation is shown by the dotted lines; Figure 4 shows a view along the axis of the shaft of the components of Figure 3 with the bearing mounted on the shaft and the bear ing being held in a bearing housing by a lock ing washer;; Figure 5 shows a partial cross-section of a locking washer, a bearing housing, a ball bearing, and a shaft, the bearing being shown with its indentations reversed so as to engage with a recess in the bearing housing the orig inal section of one indentation being shown by dotted lines; and Figure 6 shows a cross-section of a locking washer according to another embodiment of the present invention, a bearing housing, a ball bearing, and a shaft, the bearing being shown with its indentations reversed so as to engage with a recess in the shaft, and the original section of the indentations being shown by dotted lines.
    Figures 1 and 2 show a locking washer 2 according to the invention in which is pro vided axially directed indentations 21-26, evenly distributed around the circumference of the locking washer. The indentations
    21-26 do not extend right to the edge of the washer 2. By the axial distortion (reverse forming) of the indentations 21-26 of the locking washer 2 the locking washer 2 is enlarged radially outwards in the rgion of the indentations 21-26. as indicated by the curved dotted lines in Figure 4 for example, so that the locking washer 2 can be secured in a mounting.
    In the Figures 3 and 4 the locking washer 2 secures a ball bearing 3 in a bearing housing 1. First, the bal bearing 3 is mounted in the bearing housing, then the locking washer 2 is brought to bear against the outer ring of the ball bearing 3 and, by means of axial pressure the indentations 21-26 are reverse formed.
    The pressure also forces the bearing back against the right shoulder. The reverse dis tortion of the indentations 21-26 expands the locking washer 2 radially, which secures the locking washer 2 and the bearing 3. The bear ing housing 3 shown in Figures 3 and 4 is provided with weak points 11, so that the locking washer 2 can be mounted even more securely. The weak points 11 prevent the seat for the bearing 3 being distorted by the expansion of the locking washer 2.
    The axial load on the bearing seat and also the necessary force for the reverse distortion of the indentations of the locking washer is determined by the number of indentations in the locking washer 2 and the arrangement and nature of the weak points in the bearing housing.
    Figure 6 shows a ball bearing 3 secured on a shaft 4, whereby the locking washer 2 bears against the inner bearing ring of the ball bearing 3, after the bearing 3 has been premounted on the shaft. The locking washer 2 is provided in its inner peripheral region with indentations which can be distorted back by axial pressure acting in the direction of the arrow and enlarging the locking washer radially inwards in the region of the indentations, so that it engages in a recess 41 in the shaft 4. In a similar way, a recess 14 may also be provided in a bearing housing 1 as shown in Figure 5, whereby, when the indentations provided in an outer peripheral area are reverse formed, the radially enlarged regions of the locking washer 2 engage with the recess 14 and axially secure the ball bearing 3 against a shoulder of the bearing housing 1.
    Conveniently, the locking washer according to the invention can be used simultaneously as a grease or dust shield for the ball bearing 3.
    WHAT WE CLAIM IS: 1. A locking washer, for use in axially securing a component on a mounting, which washer is provided with one or more indentations arranged so that on deforming the one or more indentations, in a manner tending to eliminate the one or more indentations, a part of the locking washer adjacent the or each of the indentation(s) is displaced radially on the same radius as the indentation to which it is adjacent.
  2. 2. A locking washer as claimed in claim 1 wherein the indentations are provided in a radially outer peripheral area.
  3. 3. A locking washer as claimed in claim 1 or 2, wherein the indentations are distributed around the circumference of the locking washer.
  4. 4. A locking washer as claimed in claim 1, wherein the indentations are distributed around the inner periphery of the locking washer.
  5. 5. A locking washer substantially as hereinbefore described with reference to, and as shown in, the accompanying drawings.
  6. 6. In combination a locking washer as claimed in any of claims 1 to 5, and a housing and/or a mounting for said washer wherein the housing and/or the mounting is or are provided with one or more weak regions,
    whereby on deforming the indentations said one or more weak regions are deformed to accommodate the one or more parts of the washer which are displaced radially.
  7. 7. A combination of a locking washer, and a housing and/or a mounting as claimed in claim 6 wherein said housing and/or said mounting or at least the weak regions of said housing and/or said mounting is or are formed of a material which is substantially weaker than that of the locking washer.
  8. 8. A combination of a locking washer, and a housing and/or a mounting as claimed in claim 6 wherein the weak regions comprise regions of the housing and/or the mounting which have been cut away such as to leave only a thin section of material.
  9. 9. A combination of a locking washer, and a housing and/or a mounting as claimed in claims 6, 7 or 8 wherein the mounting is a shaft.
  10. 10. A combination of a locking washer and, a housing and/or a mounting as claimed in any of claims 6, 7, 8 or 9 wherein the housing and/or the mounting is provided with a recess into which the locking washer can be displaced radially.
  11. 11. A locking washer as claimed in any of claims 1 to 5 or a combination of a locking washer, and a housing and/or a mounting as claimed in any of claims 6 to 10 wherein a locking washer is used simultaneously as a grease or a dust shield.
  12. 12. A combination of a locking washer, and a housing and/or a mounting as claimed in any of claims 6 to 11, substantially as hereinbefore described with reference to, and as shown in the accompanying drawing.
GB25328/77A 1976-06-30 1977-06-16 Locking washer Expired GB1558933A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2629436A DE2629436C2 (en) 1976-06-30 1976-06-30 Arrangement for establishing a ball bearing or the like. in a bearing shield hub or on a shaft by means of a locking washer

Publications (1)

Publication Number Publication Date
GB1558933A true GB1558933A (en) 1980-01-09

Family

ID=5981886

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25328/77A Expired GB1558933A (en) 1976-06-30 1977-06-16 Locking washer

Country Status (5)

Country Link
AT (1) AT376486B (en)
DE (1) DE2629436C2 (en)
FR (1) FR2356832A1 (en)
GB (1) GB1558933A (en)
IT (1) IT1085813B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2327986A (en) * 1997-07-31 1999-02-10 Sunonwealth Electr Mach Ind Co Bearing mounting structure for the fan motor
US8505706B2 (en) 2008-03-07 2013-08-13 Aktiebolaget Skf Bearing arrangement for a load-bearing roller

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3030311C2 (en) * 1980-08-11 1982-06-09 Siemens AG, 1000 Berlin und 8000 München Arrangement for fixing a spherical plain bearing in a bearing shield hub
DE3605355A1 (en) * 1986-02-20 1987-08-27 Skf Gmbh METHOD FOR ADJUSTING MACHINE PARTS
DE102006056938A1 (en) * 2006-11-30 2008-06-12 Valeo Systèmes d`Essuyage Shaft arrangement of an electric motor auxiliary drive, method for securing a functional element on a shaft and spreader
DE102011056944A1 (en) * 2011-12-22 2013-06-27 Heinz Wilhelm Wheel centers
BE1028066B9 (en) * 2020-02-18 2021-10-18 Punch Powertrain Shaft composition, retaining element and methods

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2327986A (en) * 1997-07-31 1999-02-10 Sunonwealth Electr Mach Ind Co Bearing mounting structure for the fan motor
US8505706B2 (en) 2008-03-07 2013-08-13 Aktiebolaget Skf Bearing arrangement for a load-bearing roller

Also Published As

Publication number Publication date
DE2629436B1 (en) 1977-12-15
AT376486B (en) 1984-11-26
FR2356832B1 (en) 1980-02-01
DE2629436C2 (en) 1979-06-28
IT1085813B (en) 1985-05-28
FR2356832A1 (en) 1978-01-27
ATA329977A (en) 1984-04-15

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19930616