GB2378485A - Bearing journal arrangement providing restricted movement - Google Patents

Bearing journal arrangement providing restricted movement Download PDF

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Publication number
GB2378485A
GB2378485A GB0214496A GB0214496A GB2378485A GB 2378485 A GB2378485 A GB 2378485A GB 0214496 A GB0214496 A GB 0214496A GB 0214496 A GB0214496 A GB 0214496A GB 2378485 A GB2378485 A GB 2378485A
Authority
GB
United Kingdom
Prior art keywords
race
bearing journal
stops
bearing
neck
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
GB0214496A
Other versions
GB2378485B (en
GB0214496D0 (en
Inventor
Kun-Yuan Lee
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 GB0214496D0 publication Critical patent/GB0214496D0/en
Publication of GB2378485A publication Critical patent/GB2378485A/en
Application granted granted Critical
Publication of GB2378485B publication Critical patent/GB2378485B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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
    • 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
    • F16C19/14—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
    • F16C19/16—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls
    • F16C19/163—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls with angular contact
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K21/00—Steering devices
    • B62K21/06—Bearings specially adapted for steering heads
    • 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
    • F16C19/50—Other types of ball or roller bearings
    • 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
    • F16C2300/00—Application independent of particular apparatuses
    • F16C2300/20—Application independent of particular apparatuses related to type of movement
    • F16C2300/28—Reciprocating movement
    • 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
    • F16C2326/00—Articles relating to transporting
    • F16C2326/20—Land vehicles
    • F16C2326/26—Bicycle steering or suspension

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Steering Devices For Bicycles And Motorcycles (AREA)

Abstract

A bearing journal arrangement for a bicycle comprises a lower race member 50 having at least one outwardly extending stop portions 32/52, an upper race member 30 having a neck portion 33, an outwardly extending skirt portion 31 and an inwardly extending protrusion 32, and a bearing arrangement 40 positioned between the two race members 30, 50 and whereby the stops 32/52 of the lower member 50 are enclosed by the skin 31 of the upper member 30 and on to the neck 33 of which, a locking nut 20 is mounted. Steering tube/handle bar 10 extends through the bearing journal arrangement so as to attached to head tube 60 via threaded steering tube 61 and provides a system so that when the handlebar stem is rotated 180 degrees, the upper race 30 rotates in unison with the steering tube 10 and is prevented from any further rotation by contact between the protrusion 32 and one of the stops 32/52.

Description

<Desc/Clms Page number 1>
BEARING JOURNAL FOR BICYCLES FIELD OF THE INVENTION The present invention relates to a bearing journal for bicycles and the lower race has two stops on an outer periphery thereof and the upper race has a protrusion extending inward therefrom which is stopped by contacting one of the stops to restrict the handlebar to rotate over 180 degrees.
BACKGROUND OF-THE UWENTIO There are two sets of conventional bearing journals connected on two ends of the head tube of a bicycle. Each of the baring journals includes a lower race and an upper race, and a bearing is engaged between the lower race and the upper race. The steering tube of the front fork of the bicycle extends through the two bearing journals and is connected to the handlebar stem which is able to be pivoted to control the directions to turn of the bicycle. The conventional bearing journals cannot restrict the degrees of the rotation of the handlebar so that if the handlebar is over-rotated, the brake cables will be tangled and pulled tightened to suddenly stop the bicycle. This could lead a dangerous fall to the rider.
SUMMARYOFTHEINVENTION In accordance with one aspect of the present invention, there is provided a bearing journal for bicycles which comprises a lower race having
two stops extending from an outer periphery of the lower race and an upper i
<Desc/Clms Page number 2>
race having a skirt extending from an outer periphery thereof. A protrusion extends inward from an inner periphery of the skirt. A bearing is received between the lower race and the upper race. The two stops are enclosed by the skirt. A neck extends from a top surface of the upper race and a locking nut is mounted to the neck.
The primary object of the present invention is to provide a bearing journal for bicycles wherein the handlebar is restricted to be rotated within 180 degrees.
The present invention will become more obvious from me following description when taken in connection with the accompanying drawings which show, for purposes of illustration only, a preferred embodiment in accordance with the present invention.
BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view to show the bearing journal of the present invention used on a bicycle; Fig. 2 is an exploded view to show the bearing journal of the present invention; Fig. 3 is an exploded view to show the lower race, the bearing and the upper race of the bearing journal of the present invention; Fig. 4 is a top plan view to show the upper race is not yet rotated, and
<Desc/Clms Page number 3>
Fig. 5 is a top plan view to show the upper race is rotated and the protrusion is stopped by one of the two stops.
<Desc/Clms Page number 4>
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Referring to Figs. 1 to 3, the bearing journal of the present invention is installed to each one of two ends of the head tube 60 of a bicycle. A threaded steering tube 61 of the front fork 60 extends through the bearing journals on two ends of the head tube 60 and the handlebar 10 is connected to the steering tube 61. The bearing journal comprises a lower race 50 having two stops 52 extending from an outer periphery of the lower race 50, and an upper race 30 having a skirt 31 extending from an outer periphery thereof A protrusion 32 extends inward from an inner periphery of the skirt 31 and a bearing 40 is received between the lower race 50 and the upper race 30. The two lower race 50 including the two stops 52 are enclosed by the skirt 31. A neck 33 extends from a top surface of the upper race 30 and a locking nut 20 is mounted to the neck 33.
As shown in Fig. 4, when the handlebar stem 10 is not rotated or is rotated within 180 degrees, the upper race 30 is co-rotated with the handlebar stem 10. Referring to Fig. 5, when the handlebar stem 10 is to be rotated over 180 degrees, the protrusion 32 on the upper race 30 will be stopped by one of the two stops 52 on the lower race 50.
The stops 52 are not exposed and enclosed by the skirt 31 of the upper race 30 so that they will not tangle with objects. The handlebar stem 10
<Desc/Clms Page number 5>
is restricted to be rotated over 180 degrees so as to ensure the front wheel of the bicycle will not be turned to be transverse relative to the forging direction.
While we have shown and described the embodiment in accordance with the present invention, it should be clear to those skilled in the art that further embodiments may be made without departing from the scope of the present invention.

Claims (2)

WHAT IS CLAIMI ; P IS :
1. A bearing journal for bicycles, comprising: a lower race having two stops extending from an outer periphery of said lower race; an upper race having a skirt extending from an outer periphery thereof and a protrusion extending inward from an inner periphery of said skirt, said a bearing received between said lower race and said upper race, said two stops enclosed by said skirt, a neck extending from a top surface of said upper race, and a locking nut mounted to said neck.
2. A bearing journal for bicycles constructed and arranged to function substantially as hereinbefore described with reference to and as shown in the accompanying drawings.
GB0214496A 2001-06-29 2002-06-24 Bearing journal for bicycles Expired - Fee Related GB2378485B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN01229350U CN2499323Y (en) 2001-06-29 2001-06-29 Improved bicycle head group

Publications (3)

Publication Number Publication Date
GB0214496D0 GB0214496D0 (en) 2002-08-07
GB2378485A true GB2378485A (en) 2003-02-12
GB2378485B GB2378485B (en) 2004-07-28

Family

ID=4700132

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0214496A Expired - Fee Related GB2378485B (en) 2001-06-29 2002-06-24 Bearing journal for bicycles

Country Status (2)

Country Link
CN (1) CN2499323Y (en)
GB (1) GB2378485B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3034151B1 (en) * 2015-03-24 2018-07-20 Aktiebolaget Skf BEARING COMPRISING AN OVERMOLDED WEAR, AND METHOD OF MANUFACTURING THE SAME
TWI823710B (en) * 2022-12-12 2023-11-21 金盛元興業股份有限公司 Bearing component of bicycle head pipe set and bicycle head pipe set with the same
TWI823717B (en) * 2022-12-16 2023-11-21 金盛元興業股份有限公司 Bearing for bicycle head pipe set and a bicycle head pipe set with the same

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2111002A (en) * 1981-10-12 1983-06-29 Skf Ind Trading & Dev Bicycle steering head assemblies
US5163758A (en) * 1991-05-30 1992-11-17 Chi Yi Chen Journal for a head tube of a bicycle
US5297811A (en) * 1992-11-12 1994-03-29 Chi Yi C Journal of a bicycle head set
US5385360A (en) * 1993-09-17 1995-01-31 Thurston, Inc. Headset locking mechanism
US5800071A (en) * 1996-12-05 1998-09-01 Chi; Yi-Chen Journal for a head tube of a bicycle

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2111002A (en) * 1981-10-12 1983-06-29 Skf Ind Trading & Dev Bicycle steering head assemblies
US5163758A (en) * 1991-05-30 1992-11-17 Chi Yi Chen Journal for a head tube of a bicycle
US5297811A (en) * 1992-11-12 1994-03-29 Chi Yi C Journal of a bicycle head set
US5385360A (en) * 1993-09-17 1995-01-31 Thurston, Inc. Headset locking mechanism
US5800071A (en) * 1996-12-05 1998-09-01 Chi; Yi-Chen Journal for a head tube of a bicycle

Also Published As

Publication number Publication date
GB2378485B (en) 2004-07-28
GB0214496D0 (en) 2002-08-07
CN2499323Y (en) 2002-07-10

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Legal Events

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

Effective date: 20100624