GB2042124A - Reducing end float of shafts - Google Patents

Reducing end float of shafts Download PDF

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Publication number
GB2042124A
GB2042124A GB7904513A GB7904513A GB2042124A GB 2042124 A GB2042124 A GB 2042124A GB 7904513 A GB7904513 A GB 7904513A GB 7904513 A GB7904513 A GB 7904513A GB 2042124 A GB2042124 A GB 2042124A
Authority
GB
United Kingdom
Prior art keywords
shaft
collar
bearing
housing
openings
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.)
Granted
Application number
GB7904513A
Other versions
GB2042124B (en
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.)
General Motors Ltd
Original Assignee
General Motors Ltd
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 General Motors Ltd filed Critical General Motors Ltd
Priority to GB7904513A priority Critical patent/GB2042124B/en
Publication of GB2042124A publication Critical patent/GB2042124A/en
Application granted granted Critical
Publication of GB2042124B publication Critical patent/GB2042124B/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
    • 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
    • F16B17/004—Connecting constructional elements or machine parts by a part of or on one member entering a hole in the other and involving plastic deformation of rods or tubes mutually
    • 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
    • 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
    • F16C17/00—Sliding-contact bearings for exclusively rotary movement
    • F16C17/04—Sliding-contact bearings for exclusively rotary movement for axial load only

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mounting Of Bearings Or Others (AREA)
  • Sliding-Contact Bearings (AREA)

Abstract

End float of a shaft (1) journalled in a bearing housing is reduced by bringing a shoulder or like formation on one end of the shaft into abutment with one end of the bearing housing (2) and fitting a collar (10) on to the other end of the shaft which projects from the other end of the housing, so as to bring the collar into abutment with the other end of the housing, the collar then being deformed into an annular groove (7) on the projecting end of the shaft so as to secure the collar and shaft against relative axial movement. <IMAGE>

Description

SPECIFICATION Wiper pivot end float controi This invention relate to a method of and means for reducing end float (that is, axial movement), in a shaft member the opposite ends of which are respectivelyjournalled in openings in a bearing housing in which the shaft is mounted for rotary or pivotal movement.
The invention is applicable in particular to windscreen wiper pivot shafts and their mountings on motor vehicles, but is applicable to other arrangements in which a shaft is journalled at its opposite ends in a bearing housing and in which it is desirable or necessary to reduce as far as possible the amount of axial play or end float of the shaft in its mounting.
According to the present invention a method of reducing end float in a shaft member the opposite ends of which respectively extend through openings in a bearing housing in which said shaft is journailed, comprises bringing a formation on one end of said shaft member into engagement with an end face around one said opening, so as to limit axial movement of said shaft member in one direction, fitting on said shaft member a collar with one end thereof in bearing contact with an end face which extends around one of said openings and faces in the opposite direction to the first said end face, and then deforming said collar so as to engage a complementary formation on said shaft member and secure said collar and shaft member against relative axial movement.
From another aspect, the present invention is an assembly of a rotary shaft journalled at opposite ends thereof in openings in a bearing housing therefor, in which one end of said shaft has means thereon in abutment with an external bearing face on said housing around one of said bearing openings; the other end of said shaft has an annular groove on the portion thereof which extends from the other of said openings; and a collar fits on said other end of the shaft with one end portion of the collar deformed into said annular groove and the other end portion of the collar in abutment with an external bearing face around said other bearing opening.
The invention provides a simple and inexpensive way of reducing end float in a shaft journalled in a bearing housing and avoids the necessity for shims or springs, or both, such as have been commonly used heretofore to reduce the end float in such shaft assemblies.
One preferred embodiment of the present invention, and the method for its performance, are hereinafter described with reference to the accompanying drawings, in which: Figure 1 is an assembly of a windscreen wiper pivot shaft journalled in a bearing housing; Figure 2 is an end elevation of Figure 1 as viewed from the right hand side thereof; Figure 3 is an enlarged detail of Figure 1; and Figure 4 is an elevation of a collar prior to assembly with the pivot shaft.
The assembly shown in the drawings comprises a windscreen wiper pivot shaft 1 journalled in a bearing housing 2 having bearing bushes 3,4 mounted in the housing at opposite ends thereof.
One end of the pivot shaft 1 has secured thereon a crank arm 5 and the other end thereof is formed with a tapered knurled portion 6 on to which a wiper arm is adapted to be fitted in a manner well known in the art.
Adjacent the knurled portion 6 of the end of the shaft 1 protruding from the bearing housing 2 and bearing 4 the shaft 1 is formed with an annular groove 7 thereon: and the adjacent end of the bearing housing 2 is formed with an annular shoulder 8 to receive the wider end 9 of a flanged collar 10 the other end of which fits around the shaft 1 rearwardly of the knurled portion 6 thereof.
Rearwardly of the shoulder8 at the end of the pivot housing 2 the latter is formed with an annular recess to receive a seal ring 11; and a shim 12 is preferably interposed between the flange 9 of the collar 10 and the shoulder 8 so as to retain in the space between the adjacent end of the bearing housing 2 and the shaft 1 a body of lubricant and prevent the seal ring from becoming trapped in the space between the flange 9 of the collar 10 and the shaft 1 in the narrower portion of said space between the shaft and housing.
When first assembled, the collar has a plain cylindrical end portion (Figure 4) fitting on the end of theshaft but, in orderto secure the shaft 1 in the bearing housing 2 so as to be free from end float, or to reduce the end float to a minimum, the shaft is placed in the housing with the crank arm 5 held against the adjacent end of the housing 2, the collar 10 then being deformed, as by staking at four diametrically opposed places, so as to force portions of the collar into the groove 7, as indicated at 14.
Preferably the deformation of the collar 10 extends through an arc of approximately 80" in each position so as to provide substantial engagement between the groove 7 and collar 10.
With this arrangement, and the method of assembiy indicated above, the shaft 1 and bearing housing 2 can be assembled and secured together for pivotal movement of the shaft in the housing whilst substantially eliminating the end float which, with other methods of securing the shaft in the housing, is liable to occur owing to manufacturing tolerances in the parts. Moreover, as can be seen, the collar and shaft can be secured together by very simple mechanical operations, close tolerances on the sizes of the parts not being necessary and the provision of shims to take up tolerances and the employment of sizing operations prior to assembly being eliminated.
1. A method of reducing end float in a shaft member the opposite ends of which respectively extend through openings in a bearing housing in which said shaft is journalled, comprising bringing a formation on one end of said shaft member into engagement with an end face around one said opening, so as to limit axial movement of said shaft
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (6)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Wiper pivot end float controi This invention relate to a method of and means for reducing end float (that is, axial movement), in a shaft member the opposite ends of which are respectivelyjournalled in openings in a bearing housing in which the shaft is mounted for rotary or pivotal movement. The invention is applicable in particular to windscreen wiper pivot shafts and their mountings on motor vehicles, but is applicable to other arrangements in which a shaft is journalled at its opposite ends in a bearing housing and in which it is desirable or necessary to reduce as far as possible the amount of axial play or end float of the shaft in its mounting. According to the present invention a method of reducing end float in a shaft member the opposite ends of which respectively extend through openings in a bearing housing in which said shaft is journailed, comprises bringing a formation on one end of said shaft member into engagement with an end face around one said opening, so as to limit axial movement of said shaft member in one direction, fitting on said shaft member a collar with one end thereof in bearing contact with an end face which extends around one of said openings and faces in the opposite direction to the first said end face, and then deforming said collar so as to engage a complementary formation on said shaft member and secure said collar and shaft member against relative axial movement. From another aspect, the present invention is an assembly of a rotary shaft journalled at opposite ends thereof in openings in a bearing housing therefor, in which one end of said shaft has means thereon in abutment with an external bearing face on said housing around one of said bearing openings; the other end of said shaft has an annular groove on the portion thereof which extends from the other of said openings; and a collar fits on said other end of the shaft with one end portion of the collar deformed into said annular groove and the other end portion of the collar in abutment with an external bearing face around said other bearing opening. The invention provides a simple and inexpensive way of reducing end float in a shaft journalled in a bearing housing and avoids the necessity for shims or springs, or both, such as have been commonly used heretofore to reduce the end float in such shaft assemblies. One preferred embodiment of the present invention, and the method for its performance, are hereinafter described with reference to the accompanying drawings, in which: Figure 1 is an assembly of a windscreen wiper pivot shaft journalled in a bearing housing; Figure 2 is an end elevation of Figure 1 as viewed from the right hand side thereof; Figure 3 is an enlarged detail of Figure 1; and Figure 4 is an elevation of a collar prior to assembly with the pivot shaft. The assembly shown in the drawings comprises a windscreen wiper pivot shaft 1 journalled in a bearing housing 2 having bearing bushes 3,4 mounted in the housing at opposite ends thereof. One end of the pivot shaft 1 has secured thereon a crank arm 5 and the other end thereof is formed with a tapered knurled portion 6 on to which a wiper arm is adapted to be fitted in a manner well known in the art. Adjacent the knurled portion 6 of the end of the shaft 1 protruding from the bearing housing 2 and bearing 4 the shaft 1 is formed with an annular groove 7 thereon: and the adjacent end of the bearing housing 2 is formed with an annular shoulder 8 to receive the wider end 9 of a flanged collar 10 the other end of which fits around the shaft 1 rearwardly of the knurled portion 6 thereof. Rearwardly of the shoulder8 at the end of the pivot housing 2 the latter is formed with an annular recess to receive a seal ring 11; and a shim 12 is preferably interposed between the flange 9 of the collar 10 and the shoulder 8 so as to retain in the space between the adjacent end of the bearing housing 2 and the shaft 1 a body of lubricant and prevent the seal ring from becoming trapped in the space between the flange 9 of the collar 10 and the shaft 1 in the narrower portion of said space between the shaft and housing. When first assembled, the collar has a plain cylindrical end portion (Figure 4) fitting on the end of theshaft but, in orderto secure the shaft 1 in the bearing housing 2 so as to be free from end float, or to reduce the end float to a minimum, the shaft is placed in the housing with the crank arm 5 held against the adjacent end of the housing 2, the collar 10 then being deformed, as by staking at four diametrically opposed places, so as to force portions of the collar into the groove 7, as indicated at 14. Preferably the deformation of the collar 10 extends through an arc of approximately 80" in each position so as to provide substantial engagement between the groove 7 and collar 10. With this arrangement, and the method of assembiy indicated above, the shaft 1 and bearing housing 2 can be assembled and secured together for pivotal movement of the shaft in the housing whilst substantially eliminating the end float which, with other methods of securing the shaft in the housing, is liable to occur owing to manufacturing tolerances in the parts. Moreover, as can be seen, the collar and shaft can be secured together by very simple mechanical operations, close tolerances on the sizes of the parts not being necessary and the provision of shims to take up tolerances and the employment of sizing operations prior to assembly being eliminated. CLAIMS
1. A method of reducing end float in a shaft member the opposite ends of which respectively extend through openings in a bearing housing in which said shaft is journalled, comprising bringing a formation on one end of said shaft member into engagement with an end face around one said opening, so as to limit axial movement of said shaft member in one direction, fitting on said shaft member a collar with one end thereof in bearing contact with an end face which extends around one of said openings and faces in the opposite direction to the first said end face, and then deforming said collar so as to engage a complementary formation on said shaft member and secure said collar and shaft member against relative axial movement.
2. An assembly of a rotary shaft journalled at opposite ends thereof in openings in a bearing housing therefor, in which one end of said shaft has means thereon in abutment with an external bearing face on said housing around one of said bearing openings; the other end of said shaft has an annular grove on the portion thereof which extends from the other of said openings; and a collar fits on said other end of the shaft with one end portion of the collar deformed into said annular groove and the other end portion of the collar in abutment with an external bearing face around said other bearing opening.
3. An assembly according to claim 2, said shaft being a windscreen wiper pivot shaft and said one end having thereon a crank arm in abutment with said external bearing face.
4. An assembly according to claim 3, in which the other end portion of said collar abuts a surface within an annular shoulder within said other bearing opening.
5. An assembly according to claim 4, in which said collar abuts the surface of an annular shim seated in said shoulder, and a seal ring is interposed between said shim and the end of a bearing within housing in which said shaft is journalled.
6. An assembly of a rotary shaft in a bearing housing therefor, constructed and adapted to operate substantially as hereinbefore described with reference to and as shown in the accompanying drawings.
GB7904513A 1979-02-08 1979-02-08 Reducing end float of shafts Expired GB2042124B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7904513A GB2042124B (en) 1979-02-08 1979-02-08 Reducing end float of shafts

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB7904513A GB2042124B (en) 1979-02-08 1979-02-08 Reducing end float of shafts

Publications (2)

Publication Number Publication Date
GB2042124A true GB2042124A (en) 1980-09-17
GB2042124B GB2042124B (en) 1983-04-13

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3132443A1 (en) * 1981-08-17 1983-02-24 Skf Kugellagerfabriken Gmbh, 8720 Schweinfurt ARRANGEMENT FOR THE AXIAL DEFINITION OF MACHINE ELEMENTS
FR2746198A1 (en) * 1996-03-18 1997-09-19 Magneti Marelli France IMPROVEMENTS IN GAS FLOW METERING DEVICES
FR2839122A1 (en) * 2002-04-26 2003-10-31 Johnson Contr Automotive Elect Palette electromagnetic drive assembly having lengthened pusher with pusher extending through throat opening and intermediate ring inserted maintaining palette perpendicular pusher
DE10318751A1 (en) * 2003-04-25 2004-11-11 Valeo Wischersysteme Gmbh Shaft-hub connection to secure esp. roller bearings, and process to form connection uses plastic deformation of securing sleeves to press sleeve material into groove in shaft
WO2009106390A1 (en) * 2008-02-27 2009-09-03 Robert Bosch Gmbh Device and method for attaching a sleeve to a shaft

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3132443A1 (en) * 1981-08-17 1983-02-24 Skf Kugellagerfabriken Gmbh, 8720 Schweinfurt ARRANGEMENT FOR THE AXIAL DEFINITION OF MACHINE ELEMENTS
FR2746198A1 (en) * 1996-03-18 1997-09-19 Magneti Marelli France IMPROVEMENTS IN GAS FLOW METERING DEVICES
WO1997035131A1 (en) * 1996-03-18 1997-09-25 Magneti Marelli France Butterfly valve
US6036172A (en) * 1996-03-18 2000-03-14 Magneti Marelli France Butterfly valve
FR2839122A1 (en) * 2002-04-26 2003-10-31 Johnson Contr Automotive Elect Palette electromagnetic drive assembly having lengthened pusher with pusher extending through throat opening and intermediate ring inserted maintaining palette perpendicular pusher
DE10318751A1 (en) * 2003-04-25 2004-11-11 Valeo Wischersysteme Gmbh Shaft-hub connection to secure esp. roller bearings, and process to form connection uses plastic deformation of securing sleeves to press sleeve material into groove in shaft
WO2009106390A1 (en) * 2008-02-27 2009-09-03 Robert Bosch Gmbh Device and method for attaching a sleeve to a shaft

Also Published As

Publication number Publication date
GB2042124B (en) 1983-04-13

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Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee