GB2180625A - Gear coupling - Google Patents

Gear coupling Download PDF

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Publication number
GB2180625A
GB2180625A GB08622471A GB8622471A GB2180625A GB 2180625 A GB2180625 A GB 2180625A GB 08622471 A GB08622471 A GB 08622471A GB 8622471 A GB8622471 A GB 8622471A GB 2180625 A GB2180625 A GB 2180625A
Authority
GB
United Kingdom
Prior art keywords
gear member
drive
members
driven gear
driven
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
GB08622471A
Other versions
GB8622471D0 (en
GB2180625B (en
Inventor
Paul Clifford Green
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB8622471D0 publication Critical patent/GB8622471D0/en
Publication of GB2180625A publication Critical patent/GB2180625A/en
Application granted granted Critical
Publication of GB2180625B publication Critical patent/GB2180625B/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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/02—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions
    • F16D3/12—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions specially adapted for accumulation of energy to absorb shocks or vibration
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
    • F16D3/18—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts the coupling parts (1) having slidably-interengaging teeth
    • F16D3/185—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts the coupling parts (1) having slidably-interengaging teeth radial teeth connecting concentric inner and outer coupling parts

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mechanical Operated Clutches (AREA)

Abstract

A gear coupling comprises a rotary drive gear member (3) and a rotary driven gear member (4) coupled by way of an intermediate gear member (5) held in engagement with the drive and driven gear members (3, 4) by means of a spring (6), the intermediate and drive or driven gear members (3, 4) having engaging teeth which permit the members to rotate in unison while being capable of simultaneous relative axial and angular movement to accommodate any misalignment between drive and driven shafts (1,2) on which the drive and driven gear members (3,4) are mounted.The coupling releases if the torque being transmitted thereby exceeds a predetermined value. <IMAGE>

Description

SPECIFICATION Gear coupling This invention reiatesto a gear coupling, and more particularly to a gear coupling for coupling together two co-axial rotary members such as shafts.
According to this invention there is provided a gear coupling comprising a rotary drive gear member; a rotary driven gear member co-axial with the drive gear member; an intermediate gear member in en gagementwith both the drive gear member and the driven gear member; and biasing means operative to hold the intermediate gear member in engagement with the drive and driven gear members to provide transmission of rotary motion therebetween, the intermediate gear member engaging the drive gear member orthe driven gear member by way of gear teeth providing rotation of the drive and driven gear members in unison while allowing simultaneous axial and angular relative movementtherebetween to accommodate any misalignment between the axes of the drive and driven gear members.
This invention provides a gear coupling with torsional resilience, more commonly referred to as flexibility, whereby rotary motion can be transmitted be- tweentwo members even whenthe members are out of expected co-axial alignment.
This invention will now be described by way of exampie with reference to the accompanying diagrammatic drawing which is a sectional view of a gear coupling according to the invention connecting together a rotary drive shaft 1 and a coaxial rotary driven shaft 2.
The drive shaft 1 is formed with external male splines 1 A providing a drive connection with female splines 3Aformed inthe bore of a drivegearmember 3. Helical gear teeth 3B having crowned and barrelled profiles are spaced around the outside diameter of the drive gear member 3 and engage internally formed helical gearteeth SAformed in the bore of an intermediate gear member 5. The engagement between the gear teeth 3B and 5A and the teeth profiles are adapted to cause the members 3 and 5 to rotate in unison while simultaneously allowing them to move axially and angularly relative to each other in orderto accommodate any misalignmentthat may exist between the shafts 1 and 2.The intermediate gear member 5 carries external splines 5B engaged with corresponding internal splines 4Aformed in the bore of annulardriven gearmember4.The member4 engages and drives the driven shaft 2 by splines 48 formed in the bore of an extension tube 4C projecting from the driven gear member 4. The fit between the splines 4A and 5B is adapted to allow the driven gear member 4 and the intermediate gear member Sto move axially relative to each other. Diaphragm disc springs 6 (or say rubber blocks) are located between the intermediate gear member 5 and a reaction member 7 mounted on the drive gear member 3.The member 7 is located by a detent arrangement comprising a plunger 8, loaded by a screw 8B compressing a coil spring 8Aforcing the plunger8 into a groove 3C formed in the drive gear member 3.
When torque is transmitted by the drive shaft 1 ,the engagement between the gear teeth 38 and 5A produces an axial separating force which causes the member 5 to move axially against the resistance of the springs 6. The springs are caused to deflect and so dampen the effects of the torque. If the torque exceeds a set level the detent 8 gives way and allows the intermediate gear member Sto axially move to disconnect the coupling between the drive shaft 1 and the driven shaft 2.
To reset the coupiing, the screw 88 is released, the plunger 8 repositioned over the groove 3C, and the screw 88 then retig htened.
Two coupling as described above can be arranged in a back-to-back configuration to provide a cordan arrangement.
1. Agearcouplingcomprising a rotary drive gear member; a rotary driven gear member co-axial with the drive gear member; an intermediate gear member in engagement with both the drive gear member and the driven gear member; and biasing means operative to hold the intermediate gear member in engagement with the drive and driven gear members to provide transmission of rotary motion therebetween, the intermediate gear member engaging the drive gear member orthe driven gear member by way of gearteeth providing rotation of the drive and driven gear members in unison while allowing simultaneous axial and angular relative movementtherebetween to accommodate any misalignment between the axes ofthe drive and driven gear members.
2. Acoupling as claimed in Claim 1, in which the intermediate gear member engages said drive or driven gear member by way of gearteeth having crowned and barrelled profiles.
3. Acoupling as claimed in Claim 1 or Claim 2, in which the intermediate gear member engages the other of the drive and driven gear members not engaged by way of gearteeth, by way of interengaging splines which allow relative axial movement between the intermediate gear member and said other member.
4. Acoupling acclaimed in any preceding claim, in which the drive and driven gear members are mounted on respective drive and driven shafts by means of interengaging splines on the gear members and shafts.
5. Acoupling as claimed in any preceding claim, including a reaction member which is mounted on one of the drive and driven gear members at a location axially spaced from the intermediate gear member, the biassing means acting between the reaction member and the intermediate gear member.
6. A coupling as claimed in any preceding claim, in which the biassing means comprises diaphragm spring discs or rubber blocks.
7. Acoupling according to any preceding claim, in combination with a second similar coupling in a back-to-back configuration to provide a cordan arrangement.
8. A gear coupling substantially as herein descri
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (8)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Gear coupling This invention reiatesto a gear coupling, and more particularly to a gear coupling for coupling together two co-axial rotary members such as shafts. According to this invention there is provided a gear coupling comprising a rotary drive gear member; a rotary driven gear member co-axial with the drive gear member; an intermediate gear member in en gagementwith both the drive gear member and the driven gear member; and biasing means operative to hold the intermediate gear member in engagement with the drive and driven gear members to provide transmission of rotary motion therebetween, the intermediate gear member engaging the drive gear member orthe driven gear member by way of gear teeth providing rotation of the drive and driven gear members in unison while allowing simultaneous axial and angular relative movementtherebetween to accommodate any misalignment between the axes of the drive and driven gear members. This invention provides a gear coupling with torsional resilience, more commonly referred to as flexibility, whereby rotary motion can be transmitted be- tweentwo members even whenthe members are out of expected co-axial alignment. This invention will now be described by way of exampie with reference to the accompanying diagrammatic drawing which is a sectional view of a gear coupling according to the invention connecting together a rotary drive shaft 1 and a coaxial rotary driven shaft 2. The drive shaft 1 is formed with external male splines 1 A providing a drive connection with female splines 3Aformed inthe bore of a drivegearmember 3. Helical gear teeth 3B having crowned and barrelled profiles are spaced around the outside diameter of the drive gear member 3 and engage internally formed helical gearteeth SAformed in the bore of an intermediate gear member 5. The engagement between the gear teeth 3B and 5A and the teeth profiles are adapted to cause the members 3 and 5 to rotate in unison while simultaneously allowing them to move axially and angularly relative to each other in orderto accommodate any misalignmentthat may exist between the shafts 1 and 2.The intermediate gear member 5 carries external splines 5B engaged with corresponding internal splines 4Aformed in the bore of annulardriven gearmember4.The member4 engages and drives the driven shaft 2 by splines 48 formed in the bore of an extension tube 4C projecting from the driven gear member 4. The fit between the splines 4A and 5B is adapted to allow the driven gear member 4 and the intermediate gear member Sto move axially relative to each other. Diaphragm disc springs 6 (or say rubber blocks) are located between the intermediate gear member 5 and a reaction member 7 mounted on the drive gear member 3.The member 7 is located by a detent arrangement comprising a plunger 8, loaded by a screw 8B compressing a coil spring 8Aforcing the plunger8 into a groove 3C formed in the drive gear member 3. When torque is transmitted by the drive shaft 1 ,the engagement between the gear teeth 38 and 5A produces an axial separating force which causes the member 5 to move axially against the resistance of the springs 6. The springs are caused to deflect and so dampen the effects of the torque. If the torque exceeds a set level the detent 8 gives way and allows the intermediate gear member Sto axially move to disconnect the coupling between the drive shaft 1 and the driven shaft 2. To reset the coupiing, the screw 88 is released, the plunger 8 repositioned over the groove 3C, and the screw 88 then retig htened. Two coupling as described above can be arranged in a back-to-back configuration to provide a cordan arrangement. CLAIMS
1. Agearcouplingcomprising a rotary drive gear member; a rotary driven gear member co-axial with the drive gear member; an intermediate gear member in engagement with both the drive gear member and the driven gear member; and biasing means operative to hold the intermediate gear member in engagement with the drive and driven gear members to provide transmission of rotary motion therebetween, the intermediate gear member engaging the drive gear member orthe driven gear member by way of gearteeth providing rotation of the drive and driven gear members in unison while allowing simultaneous axial and angular relative movementtherebetween to accommodate any misalignment between the axes ofthe drive and driven gear members.
2. Acoupling as claimed in Claim 1, in which the intermediate gear member engages said drive or driven gear member by way of gearteeth having crowned and barrelled profiles.
3. Acoupling as claimed in Claim 1 or Claim 2, in which the intermediate gear member engages the other of the drive and driven gear members not engaged by way of gearteeth, by way of interengaging splines which allow relative axial movement between the intermediate gear member and said other member.
4. Acoupling acclaimed in any preceding claim, in which the drive and driven gear members are mounted on respective drive and driven shafts by means of interengaging splines on the gear members and shafts.
5. Acoupling as claimed in any preceding claim, including a reaction member which is mounted on one of the drive and driven gear members at a location axially spaced from the intermediate gear member, the biassing means acting between the reaction member and the intermediate gear member.
6. A coupling as claimed in any preceding claim, in which the biassing means comprises diaphragm spring discs or rubber blocks.
7. Acoupling according to any preceding claim, in combination with a second similar coupling in a back-to-back configuration to provide a cordan arrangement.
8. A gear coupling substantially as herein descri bed with reference to the drawing.
GB8622471A 1985-09-18 1986-09-18 Gear coupling Expired GB2180625B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB858523115A GB8523115D0 (en) 1985-09-18 1985-09-18 Gear coupling

Publications (3)

Publication Number Publication Date
GB8622471D0 GB8622471D0 (en) 1986-10-22
GB2180625A true GB2180625A (en) 1987-04-01
GB2180625B GB2180625B (en) 1989-08-23

Family

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Family Applications (2)

Application Number Title Priority Date Filing Date
GB858523115A Pending GB8523115D0 (en) 1985-09-18 1985-09-18 Gear coupling
GB8622471A Expired GB2180625B (en) 1985-09-18 1986-09-18 Gear coupling

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB858523115A Pending GB8523115D0 (en) 1985-09-18 1985-09-18 Gear coupling

Country Status (1)

Country Link
GB (2) GB8523115D0 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0292224A1 (en) * 1987-05-18 1988-11-23 Paul Clifford Green Mechanical coupling
GB2241542A (en) * 1990-02-28 1991-09-04 Massey Ferguson Mfg Device for coupling a gear and a shaft
US5665001A (en) * 1994-06-03 1997-09-09 Lohr & Bromkamp Gmbh Coupling for connecting two shafts
DE10220032C1 (en) * 2002-02-28 2003-11-13 Walterscheid Gmbh Gkn Coupling, especially torque limiting coupling
US9989099B2 (en) * 2016-03-24 2018-06-05 Goodrich Actuation Systems Limited Splined couplings
DE102018219600A1 (en) * 2018-11-15 2020-05-20 Audi Ag Damping device for a drive train of a motor vehicle, drive train for a motor vehicle, and motor vehicle
US11525483B2 (en) * 2018-03-05 2022-12-13 Hamilton Sundstrand Corporation Self-centering flexible coupling

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB256718A (en) * 1925-05-16 1926-08-16 Armstrong Siddeley Motors Ltd Improvements in the driving of rotary blowers or pumps for use on internal combustion engines
GB827377A (en) * 1955-03-25 1960-02-03 Albert Tacke Improvements in flexible shaft couplings
GB1423024A (en) * 1972-05-18 1976-01-28 Koppers Co Inc Gear couplings
GB2033538A (en) * 1978-10-13 1980-05-21 Potts A Shaft couplings
GB1569894A (en) * 1975-11-17 1980-06-25 Koppers Co Inc Spindle couplings
GB2040397A (en) * 1979-01-22 1980-08-28 Costamasnaga Spa Universal joints
EP0093694A1 (en) * 1982-04-30 1983-11-09 Arinc Research Corporation Shaft coupling

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB256718A (en) * 1925-05-16 1926-08-16 Armstrong Siddeley Motors Ltd Improvements in the driving of rotary blowers or pumps for use on internal combustion engines
GB827377A (en) * 1955-03-25 1960-02-03 Albert Tacke Improvements in flexible shaft couplings
GB1423024A (en) * 1972-05-18 1976-01-28 Koppers Co Inc Gear couplings
GB1569894A (en) * 1975-11-17 1980-06-25 Koppers Co Inc Spindle couplings
GB2033538A (en) * 1978-10-13 1980-05-21 Potts A Shaft couplings
GB2040397A (en) * 1979-01-22 1980-08-28 Costamasnaga Spa Universal joints
EP0093694A1 (en) * 1982-04-30 1983-11-09 Arinc Research Corporation Shaft coupling

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0292224A1 (en) * 1987-05-18 1988-11-23 Paul Clifford Green Mechanical coupling
US4913681A (en) * 1987-05-18 1990-04-03 Green Paul C Shock absorbing rotary gear coupling
GB2241542A (en) * 1990-02-28 1991-09-04 Massey Ferguson Mfg Device for coupling a gear and a shaft
US5090263A (en) * 1990-02-28 1992-02-25 Massey Ferguson Services N.V. Gear coupler
GB2241542B (en) * 1990-02-28 1993-12-01 Massey Ferguson Mfg A gear coupler
US5665001A (en) * 1994-06-03 1997-09-09 Lohr & Bromkamp Gmbh Coupling for connecting two shafts
DE10220032C1 (en) * 2002-02-28 2003-11-13 Walterscheid Gmbh Gkn Coupling, especially torque limiting coupling
US9989099B2 (en) * 2016-03-24 2018-06-05 Goodrich Actuation Systems Limited Splined couplings
US11525483B2 (en) * 2018-03-05 2022-12-13 Hamilton Sundstrand Corporation Self-centering flexible coupling
DE102018219600A1 (en) * 2018-11-15 2020-05-20 Audi Ag Damping device for a drive train of a motor vehicle, drive train for a motor vehicle, and motor vehicle
DE102018219600B4 (en) 2018-11-15 2022-06-15 Audi Ag Damping device for a drive train of a motor vehicle, drive train for a motor vehicle, and motor vehicle

Also Published As

Publication number Publication date
GB8622471D0 (en) 1986-10-22
GB8523115D0 (en) 1985-10-23
GB2180625B (en) 1989-08-23

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Legal Events

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

Effective date: 19930918