GB2258021A - Rotary joint for bicycle hydraulic control lines - Google Patents

Rotary joint for bicycle hydraulic control lines Download PDF

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Publication number
GB2258021A
GB2258021A GB9115631A GB9115631A GB2258021A GB 2258021 A GB2258021 A GB 2258021A GB 9115631 A GB9115631 A GB 9115631A GB 9115631 A GB9115631 A GB 9115631A GB 2258021 A GB2258021 A GB 2258021A
Authority
GB
United Kingdom
Prior art keywords
chambers
fixed
head tube
control lines
tube
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.)
Withdrawn
Application number
GB9115631A
Other versions
GB9115631D0 (en
Inventor
Fiaz Asghair Ahmed
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
Priority to GB9115631A priority Critical patent/GB2258021A/en
Publication of GB9115631D0 publication Critical patent/GB9115631D0/en
Publication of GB2258021A publication Critical patent/GB2258021A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62L—BRAKES SPECIALLY ADAPTED FOR CYCLES
    • B62L3/00—Brake-actuating mechanisms; Arrangements thereof
    • B62L3/02—Brake-actuating mechanisms; Arrangements thereof for control by a hand lever
    • B62L3/023—Brake-actuating mechanisms; Arrangements thereof for control by a hand lever acting on fluid pressure systems
    • 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
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L39/00—Joints or fittings for double-walled or multi-channel pipes or pipe assemblies
    • F16L39/04—Joints or fittings for double-walled or multi-channel pipes or pipe assemblies allowing adjustment or movement

Abstract

A rotary fluid connector for hydraulic control lines in a bicycle, has multiple chambers 1, 2 and 3 which are concentrically fixed to each other and together releasably fixed to the inside of the head tube 7 of the cycle and do not rotate relative to the head tube. The chambers are sealed by seals on the top side, which slide around the circumference of the chambers when the steering is turned, which are fixed to a single circular cover 5 which is fixed to the fork tube 6. The hydraulics of the controls (rear brake, front sprocket selector mechanism, rear sprocket selector mechanism) are channelled through a chamber so that the steering can rotate relative to the rest of the bike, but control of mechanisms on the rest of the bike is always possible because each hydraulic channel remains sealed. The whole mechanism is protected by the head tube from collision damage and dust/dirt corrosion. <IMAGE>

Description

HYDRAULIC S-HASH ~LA'E This invention relates to a hydraulic swash plate to govern hydraulic control lines (brakes, gears etc.) of bicycles to allow continuous rotation of steering.
Cycles designed for freestyle/trick manouvres require 3600+ rotation of the steering. The problem of control lines (cables) being wrapped around the head tube is currently solved by the use of a swash plate mechanism which is effectively a 'break' in#the rear brake control line.
The front brake control line avoids being wrapped around the head tube by being routed through the head tube and fork tube. The current swash plate deals with only one control line and is externally situated around the handlebar stem.
According to the present invention there is provided a hydraulic swash plate which deals with 3 control lines by means of ring shaped chambers with rotating seals and the whole mechanism is internally housed between the fork tube and the head tube.
A specific embodiment of the invention will now be described by way of example with reference to the accompanying drawings in which: IZUI7E 1 shows a vertical cross section of the hydraulic swash plate mechanism fitted into position between the fork tube and head tube, revealing 3 chambers and rotating seals.
'IGUSE 2 shows a plan view illustrating the position of the top side nipples, one above each chamber and the strengthening webs.
Referring to the drawings the hydraulic swash plate comprises 3 circular chambers 1,2 and 3 concentrically fixed to each other, and releasably fixed to the head tube 7 to prevent vertical or rotational movement. The seals 4 are tightly fitted into the chambers and are fixed to the cover 5. The cover and seals rotate relative to the chambers, the seals sliding around the circumference of the chambers.
The cover is releasably fixed to the fork tube to prevent it being pushed off when pressure is accumulated in the chambers. The chambers and cover are made rigid by webs 10. The hydraulic pipes are connected to the nipples 8 and 9 which let the fluid pass through the chambers.
The chambers being fixed to the head tube 7 and the cover being fixed to the fork tube 6, allow both parts to rotate independently, and the hydraulics remain sealed while the steering is rotating partly or continuously. The control pipes are internally routed from the control levers to the cover 5 by passing inside the handlebar tubing, through the head clamp and into the fork tube, then out of the fork tube through holes in the site of it.

Claims (2)

CLAI.-IS
1. A hydraulic swash plate comprising nultiple circular chambers concentrically fixed to each other and fixed to the outer head tube, the chambers being sealed at the top by rotating seals which slide along the circumference of the chambers and are attached to a single cover which is fixed to the inner rotating fork tube, each chamber having a nipple above it in the cover and in the bottom of it to allow connection of pipes and passage of fluid through the chambers.
2. Hydraulic swash plate substantially as described herein with reference to figures 1 and 2 of the accompanying drawings.
GB9115631A 1991-07-19 1991-07-19 Rotary joint for bicycle hydraulic control lines Withdrawn GB2258021A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9115631A GB2258021A (en) 1991-07-19 1991-07-19 Rotary joint for bicycle hydraulic control lines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9115631A GB2258021A (en) 1991-07-19 1991-07-19 Rotary joint for bicycle hydraulic control lines

Publications (2)

Publication Number Publication Date
GB9115631D0 GB9115631D0 (en) 1991-09-04
GB2258021A true GB2258021A (en) 1993-01-27

Family

ID=10698642

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9115631A Withdrawn GB2258021A (en) 1991-07-19 1991-07-19 Rotary joint for bicycle hydraulic control lines

Country Status (1)

Country Link
GB (1) GB2258021A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2327727A (en) * 1997-05-22 1999-02-03 Benjamin Kormann Hydraulic brake operation in bicycles
US7204349B2 (en) 2003-11-27 2007-04-17 Wolfgang Göring Rotor system for a bicycle
TWI704080B (en) * 2018-12-06 2020-09-11 彥豪金屬工業股份有限公司 Bicycle handlebar assembly

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB621342A (en) * 1941-10-01 1949-04-07 Pietro Lupis Improvements in hydraulic brakes for bicycles, motor-cycles and similar vehicles
US4214780A (en) * 1977-05-20 1980-07-29 Grace George A Rotatable pipe coupling structure
US4250918A (en) * 1977-12-30 1981-02-17 Entrepise d'Equipments Mechanique set Hydrauliques E.M.H. Rotary joint device with multiple piping passages, in particular for loading or transfer columns on marine sites
US4280720A (en) * 1977-08-04 1981-07-28 Societe Nationale Elf Aquitaine (Production) Horizontally developing multi-functions rotating connection

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB621342A (en) * 1941-10-01 1949-04-07 Pietro Lupis Improvements in hydraulic brakes for bicycles, motor-cycles and similar vehicles
US4214780A (en) * 1977-05-20 1980-07-29 Grace George A Rotatable pipe coupling structure
US4280720A (en) * 1977-08-04 1981-07-28 Societe Nationale Elf Aquitaine (Production) Horizontally developing multi-functions rotating connection
US4250918A (en) * 1977-12-30 1981-02-17 Entrepise d'Equipments Mechanique set Hydrauliques E.M.H. Rotary joint device with multiple piping passages, in particular for loading or transfer columns on marine sites

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2327727A (en) * 1997-05-22 1999-02-03 Benjamin Kormann Hydraulic brake operation in bicycles
US7204349B2 (en) 2003-11-27 2007-04-17 Wolfgang Göring Rotor system for a bicycle
DE102004053504B4 (en) * 2003-11-27 2009-07-23 GÖRING, Wolfgang Rotor system, in particular for a bicycle or tricycle
TWI704080B (en) * 2018-12-06 2020-09-11 彥豪金屬工業股份有限公司 Bicycle handlebar assembly

Also Published As

Publication number Publication date
GB9115631D0 (en) 1991-09-04

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)