WO2009132647A1 - Système de suspension arrière pour bicyclettes - Google Patents

Système de suspension arrière pour bicyclettes Download PDF

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Publication number
WO2009132647A1
WO2009132647A1 PCT/DK2008/050209 DK2008050209W WO2009132647A1 WO 2009132647 A1 WO2009132647 A1 WO 2009132647A1 DK 2008050209 W DK2008050209 W DK 2008050209W WO 2009132647 A1 WO2009132647 A1 WO 2009132647A1
Authority
WO
WIPO (PCT)
Prior art keywords
tube
seat
stays
shock absorbing
triangle
Prior art date
Application number
PCT/DK2008/050209
Other languages
English (en)
Inventor
Kenneth Steiniche Dalsgaard
Original Assignee
Pronghorn Racing I/S V/Kenneth Steiniche Dalsgaard Og Jan Skovgaard Bak Pedersen
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 Pronghorn Racing I/S V/Kenneth Steiniche Dalsgaard Og Jan Skovgaard Bak Pedersen filed Critical Pronghorn Racing I/S V/Kenneth Steiniche Dalsgaard Og Jan Skovgaard Bak Pedersen
Publication of WO2009132647A1 publication Critical patent/WO2009132647A1/fr

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Classifications

    • 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
    • B62K25/00—Axle suspensions
    • B62K25/04—Axle suspensions for mounting axles resiliently on cycle frame or fork
    • B62K25/28—Axle suspensions for mounting axles resiliently on cycle frame or fork with pivoted chain-stay

Definitions

  • the present invention relates to a bicycle suspension system, and more particularly, to a rear suspension system for bicycles and the rear triangle of the bicycle frame moves less distance when the suspension system works.
  • a conventional rear suspension system for bicycles is used to absorb shocks transferred from the rear wheel so as to provide a comfortable riding experience.
  • One of the conventional rear suspension system known to applicant has a center
  • a clamp angle of 45 ⁇ 5 degrees is clamped between the imaginary line between the contact point of the rear wheel contacting the ground and the center of the rear triangle and a horizontal line.
  • FIG. 4 and 5 Another conventional rear suspension system 80 is disclosed in Figs. 4 and 5, and 25 generally includes a front triangle 81, a rear triangle 82, a connection unit 83 and a shock absorbing unit 84, wherein the front triangle 81 includes a top tube 811 connected between a head tube 812 and a seat tube 813, a down tube 815 connected between the head tube 812 and a bottom bracket 814 located at the lower end of the seat tube 813.
  • a pivot 816 is located at a mediate portion of the 30 seat tube 813 and a connection member 831 is pivotably connected to the pivot 816.
  • a bridge member 817 is connected between the seat tube 813 and the down tube 815.
  • the rear triangle 82 includes two chain stays 822 which have two respective first ends 826 pivotably connected to the connection portions 818 on the lower end of the seat tube 813 and two down stays 821 which have first ends 35 825 pivotably connected to the dropouts 823 on the second ends of the chain stays 822.
  • the second ends 824 of the down stays 821 are pivotably connected to a link 832 which is pivotably connected to the connection member 831.
  • the shock absorbing unit 84 includes a first shock absorbing member 841 pivotably connected between one end of the connection member 831 and the bridge member 817, and a second shock absorbing member 842 which is pivotably connected between the two chain stays 822 and the connection member 831.
  • the first shock absorbing member 841 is located within the area that the front triangle
  • the second shock absorbing member 842 is located within the area that the rear triangle 82 defines.
  • the first and second shock absorbing members 841, 842 are both located below the top tube 811 and the connection member 831 and the link 832 are used to position the two shock absorbing members 841, 842.
  • the rear triangle is used to position the two shock absorbing members 841, 842.
  • the present invention intends to provide a rear suspension system for bicycles wherein the distance that the rear triangle of the bicycle frame travels is less than the conventional rear suspension systems so as to provide a more comfortable riding experience.
  • the present invention relates to a rear suspension system for bicycles and the rear suspension system comprises a front triangle, a rear triangle and a shock absorbing member connected between the front and rear triangles.
  • the front triangle comprises a head tube, a first end of a top tube is connected to the head tube and a second end of the top tube is connected to a seat tube.
  • a first end of a down tube is connected to the head tube and a second end of the down tube is connected to a bottom bracket which is fixed to a lower end of the seat tube.
  • a connection member extends from a top of the top tube.
  • the rear triangle comprises two seat stays which have two respective first ends extending beyond the seat tube and located above the top tube, two chain stays having two respective first ends pivotably connected to the seat tube and two dropouts connected to two respective second ends of the chain stays. Two respective second ends of the seat stays are connected with the dropouts.
  • the shock absorbing member is pivotably connected between the connection member and the two first ends of the seat stays.
  • Another embodiment of the present invention is to provide a rear suspension system for bicycles wherein the shock absorbing member is directly connected with the rear triangle without using any link so as to activate the shock absorbing member quickly.
  • Fig. 1 is a side view of the rear suspension system of the present invention on a bicycle frame
  • Fig. 2 shows the distance that the rear triangle of the rear suspension system of the present invention travels
  • Fig. 3 shows the distance that the rear triangle of the conventional rear suspension system travels
  • Fig. 4 is a side view of a conventional rear suspension system travels
  • Fig. 5 shows that the shock absorbing members of a control example of the rear suspension system of the present invention travels. Detailed description of the preferred embodiment
  • the rear suspension system for bicycles of the present invention comprises a front triangle 10, a rear triangle 20 and a shock absorbing member 30 which is pivotably connected between the front and rear triangles 10, 20.
  • the front triangle comprises a head tube 11, a top tube 12, a down tube 13 and a seat tube 14, wherein a first end of the top tube 12 is connected to the head tube 11 and a second end of the top tube 12 is connected to the seat tube 14.
  • a first end of the down tube 13 is connected to the head tube 11 and a second end of the down tube 13 is connected to a bottom bracket 15 which is fixed to a lower end of the seat tube 14.
  • a connection member 121 extends from a top of the top tube 12.
  • the top tube 12 includes a concaved section so as to define a concaved space 122 on a top of the top tube 12.
  • the rear triangle 20 comprises two seat stays 21 and two chain stays 22, wherein the two seat stays 21 have two respective first ends extending beyond the seat tube 14 and located above the top tube 12.
  • the two chain stays 22 have two respective first ends pivotably connected to the seat tube 14 and two dropouts 23 are connected to two respective second ends of the chain stays 22.
  • the two respective first ends of the chain stays 22 are pivotably connected to the seat tube 14 at a position above the bottom bracket 15.
  • Two respective second ends of the seat stays 21 are connected with the dropouts 23.
  • the dropouts 23 are connected with the rear wheel axle (not shown) and the bottom bracket 15 is connected with a crank unit which is not shown.
  • the shock absorbing member 30 is pivotably connected between the connection member 121 and the two first ends of the seat stays 21.
  • the shock absorbing member 30 is located in the concaved space 122 and above the top tube 12.
  • Fig. 3 which shows a control example which has similar structure as the present invention except that the connection member 121 extends from a lower edge of the top tube 12 and the two first ends of the seat stays 21 are located beneath the top tube 12, so that the shock absorbing member 30 is located beneath the top tube 12.
  • the rear triangle 20 of the control example travels a distance "t2" which is larger than the distance "tl" of the present invention.
  • the shock absorbing member 30 of the present invention is activated close to a linear movement and this is because the rear triangle 20 travels a small distance "tl".
  • the linear movement of the shock absorbing member 30 has higher efficiency to absorb the shocks from the rear wheel. If the shock absorbing member 30 is located beneath the top tube 12, the distance "t2" that the rear triangle 20 travels is longer and the shock absorbing member 30 swings an significant angle which reduces the efficiency for absorbing the shocks.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Axle Suspensions And Sidecars For Cycles (AREA)

Abstract

L'invention concerne un système de suspension arrière comprenant un triangle avant (10) qui comporte un tube de direction (11) et un tube de selle (14), un tube horizontal (12) et un tube diagonal (13) étant reliés entre le tube de direction (11) et le tube de selle (14). Le tube horizontal (12) comprend un espace concave (122) défini dans une partie supérieure de celui-ci. Un triangle arrière (20) comprend deux haubans (21) qui présentent deux premières extrémités respectives s'étendant au-delà du tube de selle (14) et se trouvant au-dessus du tube horizontal (12), et deux bases (22) ayant deux premières extrémités respectives reliées pivotantes au tube de direction. Deux pattes arrière (23) sont reliées à deux deuxièmes extrémités respectives des bases (22). Deux deuxièmes extrémités respectives des haubans (21) sont reliées aux pattes arrière (23). Un élément amortisseur (30) est relié pivotant entre l'élément de liaison (121) et les deux premières extrémités des haubans (21). Le triangle arrière (20) se déplace sur une courte distance pour actionner l'élément amortisseur (30).
PCT/DK2008/050209 2008-04-29 2008-08-21 Système de suspension arrière pour bicyclettes WO2009132647A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TW97207352U TWM353882U (en) 2008-04-29 2008-04-29 Rear shock absorbing structure of bicycle
TW97207352 2008-04-29

Publications (1)

Publication Number Publication Date
WO2009132647A1 true WO2009132647A1 (fr) 2009-11-05

Family

ID=40093152

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DK2008/050209 WO2009132647A1 (fr) 2008-04-29 2008-08-21 Système de suspension arrière pour bicyclettes

Country Status (2)

Country Link
TW (1) TWM353882U (fr)
WO (1) WO2009132647A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018034566A (ja) * 2016-08-29 2018-03-08 俊之 木森 自転車

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2756071A (en) * 1950-12-29 1956-07-24 Riva Danilo Frame springing of bicycles or light motorcycles
US5269552A (en) * 1992-09-03 1993-12-14 Gt Bicycles, Inc. Bicycle frame composition
US5772228A (en) * 1995-09-08 1998-06-30 Beyond Beryllium Fabrications Integrated rear suspension for a bicycle frame
DE20205539U1 (de) * 2002-04-10 2002-07-25 Derby Cycle Werke Gmbh Zweiradrahmen, insbesondere Fahrradrahmen
US20020130485A1 (en) * 1998-03-27 2002-09-19 Schonfeld Carl W. Bicycle with shock absorber

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2756071A (en) * 1950-12-29 1956-07-24 Riva Danilo Frame springing of bicycles or light motorcycles
US5269552A (en) * 1992-09-03 1993-12-14 Gt Bicycles, Inc. Bicycle frame composition
US5772228A (en) * 1995-09-08 1998-06-30 Beyond Beryllium Fabrications Integrated rear suspension for a bicycle frame
US20020130485A1 (en) * 1998-03-27 2002-09-19 Schonfeld Carl W. Bicycle with shock absorber
DE20205539U1 (de) * 2002-04-10 2002-07-25 Derby Cycle Werke Gmbh Zweiradrahmen, insbesondere Fahrradrahmen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018034566A (ja) * 2016-08-29 2018-03-08 俊之 木森 自転車

Also Published As

Publication number Publication date
TWM353882U (en) 2009-04-01

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