GB2024381A - Twist grip controls - Google Patents

Twist grip controls Download PDF

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Publication number
GB2024381A
GB2024381A GB7827009A GB7827009A GB2024381A GB 2024381 A GB2024381 A GB 2024381A GB 7827009 A GB7827009 A GB 7827009A GB 7827009 A GB7827009 A GB 7827009A GB 2024381 A GB2024381 A GB 2024381A
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GB
United Kingdom
Prior art keywords
recesses
projections
parts
twist grip
grip
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
GB7827009A
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GB2024381B (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.)
TI Raleigh Industries Ltd
Original Assignee
TI Raleigh Industries 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 TI Raleigh Industries Ltd filed Critical TI Raleigh Industries Ltd
Priority to GB7827009A priority Critical patent/GB2024381B/en
Publication of GB2024381A publication Critical patent/GB2024381A/en
Application granted granted Critical
Publication of GB2024381B publication Critical patent/GB2024381B/en
Expired legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62KCYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K23/00Rider-operated controls specially adapted for cycles, i.e. means for initiating control operations, e.g. levers, grips
    • B62K23/02Rider-operated controls specially adapted for cycles, i.e. means for initiating control operations, e.g. levers, grips hand actuated
    • B62K23/04Twist grips

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mechanical Control Devices (AREA)

Abstract

A twist grip control for cycle gears has a first part 12 for securing to a handle bar and a hand grip part 40 rotatable relative to the first part and arranged to be connected to a cable 24. The two parts have recesses 30-32, 30a-32a and projections 48 cooperable to lock the parts together, at a plurality of relative rotary positions. The projections are carried by resilient elements 47 to provide a detent effect. <IMAGE>

Description

SPECIFICATION Improvements in or relating to twist grips This invention relates to twist grips for vehicles for example pedal cycles.
According to this invention a twist grip comprises a first part for securing to a handle bar, a second part rotatable relative to the first part and comprising a hand grip, the second part being adapted for attachment of the end of a cable, the first and second parts having formations cooperable at a plurality of relative angular positions of the first and second parts.
The cooperable formations may comprise recesses and projections on the respective parts.
The recesses may be on the first part. The recesses and projections may be part-spherical.
The parts may be releasably secured together by a circlip received in a slot in the first part.
The first and second parts, and circlip if provided, are preferably made from plastics providing a degree of inherent resiiience.
The projections may be provided on resilient elements so that their cooperation with the recesses provides a detent effect.
There may be two diametrically opposed projections respectively cooperable with respective ones of two groups of diametrically opposed recesses. There may be three recesses in each group.
The first part may include a recess for receiving an end of a cable sheath.
The invention may be performed in various ways and one specific embodiment will now be described by way of example with reference to the accompanying drawings, in which Fig. 1 is an exploded view of a twist grip; and Fig. 2 is an end elevation of one part of the grip.
As is conventional the twist grip 10 is secured in use on the end of a tubular handlebar 11. In the present case a cable support part 12 has a partcylindrical boss 13 with parallel tops 1 4 defining a slot 1 5. The inner surface of the boss is provided with a steel liner 16. The lips and the ends of the liner are provided with aligned apertures through which extends a screw 17 provided with nut 18 rotation of which tightens the liner and boss on to the handlebar.
The cable support part 1 2 has a peripheral wall providing a cylindrical wall providing a cylindrical inner surface 1 9 of circular cross-section and an extension 20 has a slot 21 and counterbore 22. A conventional cable has an outer sheath the end 23 of which can be received in the counterbore as shown in Fig. 2 and the inner part 24 of the cable, which is longitudinally movable relative to the sheath, extends through the slot 21 and is provided with a nipple 25 at its end as described later. The part 12 has a flat surface 26 at right angles to the axis of the boss and the surface 19.
A small boss 27 extends from surface 26 at its periphery. The surface 19 has an annular slot 28 adjacent the end 1 9a of wall 1 9b defining surface 1 9a. The end of the wall 1 9b has an angular cutout 29.
The surface 26 is provided with two groups of part-spherical recesses, three recesses in each group, the recesses forming three pairs of diametrically opposed recesses 30, 30a and 31, 31 a and 32, 32a. The recesses are slightly less than hemi-spherical.
A hand grip support 40 includes a cylindrical stem (not shown) onto which is moulded a plastics hand grip 41. The support 40 has an enlarged portion at one end having a peripheral annular slot 42 between walls 43, 44. The inner wall 44 has an angular cut-out 45 of a depth less than that of the slot 42.
The inner wall 44 has pairs of slots 46 to provide two diammetrically opposed tongues 47 of generally triangular shape as seen axially and narrowing as they extend outwardly. Each tongue has a part-spherical projection 48 adapted to cooperate with respective recesses 30, 31, 32 and 30a, 31a, 32a.
A circlip 50 has enlarged ends 51, 52 and a tongue 53 extending radialiy outwardly of the main part of the circlip.
The part 40 includes aperture 60 for receiving the nipple 25.
In assembling the parts with nipple 25 in aperture 60 the wall 44 is brought against wall 26 with boss 27 received in cut-out 45 at one end thereof and projections 48 in recesses 32, 32a respectively. Circlip tongue 53 is inserted in cutout 29 and the circlip rotated, which is possible due to its resiliency, in slot 28 untii the ends 51, 52 are located against the shoulders at the ends ol the cut-out 29. The grips 41 can now be rotated to bring projections into recesses 31,31a and 30, 30a and back again to move the cable to change gear in the wheel hub in the usual way. When the projections 48 are in recesses 30, 30a the boss 27 is at the other end of cut-out 29.
The parts 12, 40, 50 are made by moulding from plastics to provide a degree of resilience. A suitable plastics is an acetal resin.
The tongues 47 have a degree of resiliency.
Engagement of the projections in the recesses provides a detent effect to assist in preventing inadvertent rotation of the grip 41.
The grip assembly is simple and economical to make and assemble.
Engagement of the projections in the recesses provides an aural indication of the change of gear and can also be sensed through the hand.
1. A twist grip comprising a first part for securing to a handle bar, a second part rotatable relative to the first part and comprising a hand grip, the second part being adapted for attachment to the end of a cable, the first and second parts having formations cooperable at a plurality of relative angular positions of the first and second parts.
2. A twist grip as claimed in claim 1, in which the cooperable formations comprise recesses and projections on the respective parts.
3. A twist grip as claimed in claim 2, in which
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (1)

  1. **WARNING** start of CLMS field may overlap end of DESC **.
    SPECIFICATION Improvements in or relating to twist grips This invention relates to twist grips for vehicles for example pedal cycles.
    According to this invention a twist grip comprises a first part for securing to a handle bar, a second part rotatable relative to the first part and comprising a hand grip, the second part being adapted for attachment of the end of a cable, the first and second parts having formations cooperable at a plurality of relative angular positions of the first and second parts.
    The cooperable formations may comprise recesses and projections on the respective parts.
    The recesses may be on the first part. The recesses and projections may be part-spherical.
    The parts may be releasably secured together by a circlip received in a slot in the first part.
    The first and second parts, and circlip if provided, are preferably made from plastics providing a degree of inherent resiiience.
    The projections may be provided on resilient elements so that their cooperation with the recesses provides a detent effect.
    There may be two diametrically opposed projections respectively cooperable with respective ones of two groups of diametrically opposed recesses. There may be three recesses in each group.
    The first part may include a recess for receiving an end of a cable sheath.
    The invention may be performed in various ways and one specific embodiment will now be described by way of example with reference to the accompanying drawings, in which Fig. 1 is an exploded view of a twist grip; and Fig. 2 is an end elevation of one part of the grip.
    As is conventional the twist grip 10 is secured in use on the end of a tubular handlebar 11. In the present case a cable support part 12 has a partcylindrical boss 13 with parallel tops 1 4 defining a slot 1 5. The inner surface of the boss is provided with a steel liner 16. The lips and the ends of the liner are provided with aligned apertures through which extends a screw 17 provided with nut 18 rotation of which tightens the liner and boss on to the handlebar.
    The cable support part 1 2 has a peripheral wall providing a cylindrical wall providing a cylindrical inner surface 1 9 of circular cross-section and an extension 20 has a slot 21 and counterbore 22. A conventional cable has an outer sheath the end 23 of which can be received in the counterbore as shown in Fig. 2 and the inner part 24 of the cable, which is longitudinally movable relative to the sheath, extends through the slot 21 and is provided with a nipple 25 at its end as described later. The part 12 has a flat surface 26 at right angles to the axis of the boss and the surface 19.
    A small boss 27 extends from surface 26 at its periphery. The surface 19 has an annular slot 28 adjacent the end 1 9a of wall 1 9b defining surface 1 9a. The end of the wall 1 9b has an angular cutout 29.
    The surface 26 is provided with two groups of part-spherical recesses, three recesses in each group, the recesses forming three pairs of diametrically opposed recesses 30, 30a and 31, 31 a and 32, 32a. The recesses are slightly less than hemi-spherical.
    A hand grip support 40 includes a cylindrical stem (not shown) onto which is moulded a plastics hand grip 41. The support 40 has an enlarged portion at one end having a peripheral annular slot 42 between walls 43, 44. The inner wall 44 has an angular cut-out 45 of a depth less than that of the slot 42.
    The inner wall 44 has pairs of slots 46 to provide two diammetrically opposed tongues 47 of generally triangular shape as seen axially and narrowing as they extend outwardly. Each tongue has a part-spherical projection 48 adapted to cooperate with respective recesses 30, 31, 32 and 30a, 31a, 32a.
    A circlip 50 has enlarged ends 51, 52 and a tongue 53 extending radialiy outwardly of the main part of the circlip.
    The part 40 includes aperture 60 for receiving the nipple 25.
    In assembling the parts with nipple 25 in aperture 60 the wall 44 is brought against wall 26 with boss 27 received in cut-out 45 at one end thereof and projections 48 in recesses 32, 32a respectively. Circlip tongue 53 is inserted in cutout 29 and the circlip rotated, which is possible due to its resiliency, in slot 28 untii the ends 51, 52 are located against the shoulders at the ends ol the cut-out 29. The grips 41 can now be rotated to bring projections into recesses 31,31a and 30, 30a and back again to move the cable to change gear in the wheel hub in the usual way. When the projections 48 are in recesses 30, 30a the boss 27 is at the other end of cut-out 29.
    The parts 12, 40, 50 are made by moulding from plastics to provide a degree of resilience. A suitable plastics is an acetal resin.
    The tongues 47 have a degree of resiliency.
    Engagement of the projections in the recesses provides a detent effect to assist in preventing inadvertent rotation of the grip 41.
    The grip assembly is simple and economical to make and assemble.
    Engagement of the projections in the recesses provides an aural indication of the change of gear and can also be sensed through the hand.
    1. A twist grip comprising a first part for securing to a handle bar, a second part rotatable relative to the first part and comprising a hand grip, the second part being adapted for attachment to the end of a cable, the first and second parts having formations cooperable at a plurality of relative angular positions of the first and second parts.
    2. A twist grip as claimed in claim 1, in which the cooperable formations comprise recesses and projections on the respective parts.
    3. A twist grip as claimed in claim 2, in which the recesses are on the first part and the projections are on the second part.
    4. A twist grip as claimed in claim 2 or claim 3, in which the recesses and projections are part spherical.
    5. A twist grip as claimed in any one of claims 2 to 4, in which the projections are provided in resilient elements so that their cooperation with the recesses provides a detent effect.
    6. A twist grip as claimed in any one of claims 2 to 5, in which there are two diametrically opposed projections respectively cooperable with respective ones of two groups of diametrically opposed recesses, the recesses in each group being angularly spaced.
    7. A twist grip as claimed in claim 6, in which there are three recesses in each group.
    8. A twist grip as claimed in any one of the preceding claims, in which the first part includes a recess for receiving an end of a cable sheath and the second part has a recess for receiving a nipple at the end of a cable extending along said sheath.
    9. A twist grip as claimed in any one of claims 2 to 8, in which the recesses and projections are provided on confronting surfaces of the first and second parts.
    10. A twist grip as claimed in any one of the preceding claims, in which the first and secondparts are releasably secured together by a circlip received in a slot in the first part.
    11. A twist grip as claimed in claim 10, in which the circlip is formed from plastics.
    12. A twist grip as claimed in any one of the preceding claims, in which the first and second parts are formed from plastics.
    13. A twist grip as claimed in any one of the preceding claims, including means limiting the relative rotation between the first and second parts.
    14. A twist grip as claimed in claim 13, in which the limiting means comprises a projection on one of said parts movable in a cut-out in the other.
    1 5. A twist grip substantially as hereinbefore described with reference to and as shown in the accompanying drawings.
    New claims or amendments to claims filed on 26th February 1979.
    Superseded claims 1 to 3, and 5.
    New or amended claims:-- Claim 1.
    Claims 1 to 3 and 5 deleted, claims 4 and 6 to 1 5 re-numbered and appendices corrected.
    1. A twist grip comprising a first part for securing to a handle bar, a second part rotatable relative to the first part and comprising a hand grip, the second part being adapted for attachment to the end of a cabie, the first and second parts having formations cooperable at a plurality of relative angular positions of the first and second parts, said formations comprising projections and recesses, the projections being integral with the rotatable part and resiliently mounted.
GB7827009A 1978-06-15 1978-06-15 Twist grip controls Expired GB2024381B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7827009A GB2024381B (en) 1978-06-15 1978-06-15 Twist grip controls

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB7827009A GB2024381B (en) 1978-06-15 1978-06-15 Twist grip controls

Publications (2)

Publication Number Publication Date
GB2024381A true GB2024381A (en) 1980-01-09
GB2024381B GB2024381B (en) 1982-06-23

Family

ID=10497976

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7827009A Expired GB2024381B (en) 1978-06-15 1978-06-15 Twist grip controls

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GB (1) GB2024381B (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4548092A (en) * 1983-02-10 1985-10-22 Strong Jr Samuel Z Bicycle gear shift unit
US5524501A (en) * 1994-03-07 1996-06-11 Sram Corporation Detent spring for rotatable grip actuating system
US5564316A (en) * 1994-03-07 1996-10-15 Sram Corporation Nubbed grip for rotatable bicycle gear shifter
US5662000A (en) * 1994-03-07 1997-09-02 Sram Corporation Detent spring for rotatable grip actuating system
US5797296A (en) * 1995-03-31 1998-08-25 Sugino Cycle Industries, Ltd. Bicycle speed change operation assembly
GB2323643A (en) * 1997-03-25 1998-09-30 Wu Mu Chuan Bicycle gearshift device
US6199447B1 (en) 1994-03-07 2001-03-13 Sram Corporation Bulbous grip for rotatable bicycle gear shifter

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4548092A (en) * 1983-02-10 1985-10-22 Strong Jr Samuel Z Bicycle gear shift unit
US5524501A (en) * 1994-03-07 1996-06-11 Sram Corporation Detent spring for rotatable grip actuating system
US5564316A (en) * 1994-03-07 1996-10-15 Sram Corporation Nubbed grip for rotatable bicycle gear shifter
US5584213A (en) * 1994-03-07 1996-12-17 Sram Corporation Rotatable grip for derailleur type bicycle gear shifting system
US5662000A (en) * 1994-03-07 1997-09-02 Sram Corporation Detent spring for rotatable grip actuating system
US6199447B1 (en) 1994-03-07 2001-03-13 Sram Corporation Bulbous grip for rotatable bicycle gear shifter
US5797296A (en) * 1995-03-31 1998-08-25 Sugino Cycle Industries, Ltd. Bicycle speed change operation assembly
GB2323643A (en) * 1997-03-25 1998-09-30 Wu Mu Chuan Bicycle gearshift device

Also Published As

Publication number Publication date
GB2024381B (en) 1982-06-23

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PCNP Patent ceased through non-payment of renewal fee