WO2000056593A1 - Cadre de bicyclette - Google Patents

Cadre de bicyclette Download PDF

Info

Publication number
WO2000056593A1
WO2000056593A1 PCT/ES1999/000072 ES9900072W WO0056593A1 WO 2000056593 A1 WO2000056593 A1 WO 2000056593A1 ES 9900072 W ES9900072 W ES 9900072W WO 0056593 A1 WO0056593 A1 WO 0056593A1
Authority
WO
WIPO (PCT)
Prior art keywords
bars
bicycle frame
triangle
profiles
triangles
Prior art date
Application number
PCT/ES1999/000072
Other languages
English (en)
Spanish (es)
Inventor
Michel Pierre Debien
José Ignacio LICEAGA SAGARZAZU
Original Assignee
Michel Pierre Debien
Liceaga Sagarzazu Jose Ignacio
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 Michel Pierre Debien, Liceaga Sagarzazu Jose Ignacio filed Critical Michel Pierre Debien
Priority to AU28380/99A priority Critical patent/AU2838099A/en
Priority to PCT/ES1999/000072 priority patent/WO2000056593A1/fr
Publication of WO2000056593A1 publication Critical patent/WO2000056593A1/fr

Links

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
    • B62K19/00—Cycle frames
    • B62K19/02—Cycle frames characterised by material or cross-section of frame members
    • B62K19/04—Cycle frames characterised by material or cross-section of frame members the material being wholly or mainly metallic, e.g. of high elasticity
    • 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
    • B62K19/00—Cycle frames
    • B62K19/02—Cycle frames characterised by material or cross-section of frame members
    • 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
    • B62K19/00—Cycle frames
    • B62K19/02—Cycle frames characterised by material or cross-section of frame members
    • B62K19/16—Cycle frames characterised by material or cross-section of frame members the material being wholly or mainly of plastics
    • 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
    • B62K3/00—Bicycles
    • B62K3/02—Frames
    • B62K3/10—Frames of single-beam type, i.e. connecting steering head to rear axle

Definitions

  • the present invention concerns a high performance bicycle frame of the type of double triangular configuration, that is, with a simple front triangle and two rear triangles that relate a carrier sleeve of the pedal box, supports of the rear wheel axle and a support tube of the saddle column, whose constitution improves the dynamic, ergonomic and constructive properties of the traditional triangular double configuration frames.
  • a simple front triangle and two rear triangles that relate a carrier sleeve of the pedal box, supports of the rear wheel axle and a support tube of the saddle column, whose constitution improves the dynamic, ergonomic and constructive properties of the traditional triangular double configuration frames.
  • Another aspect that can be improved is the distribution of the weight of the cyclist distributed between the wheels and the pedals.
  • a certain part of said weight should be applied to the rear wheel in order to provide sufficient adhesion of the latter with the ground.
  • excess weight on the rear wheel does not improve adhesion and instead is highly unfavorable for the bearings and for rolling, unnecessarily consuming part of the energy developed by the cyclist.
  • a third aspect to be perfected is the ergonomic one, at points such as the general position of the cyclist's body on the bicycle and the fact that in traditional bicycles there is generally a very direct transmission, through the upper bars of the triangles rear and front, to the base of the saddle (at the end of these bars in areas close to said saddle) of the vibrations produced by rolling on the axles of the wheels.
  • the utility model ES-A-1035484 describes a bicycle frame in which a main bar links the guide sleeve and support of the front wheel fork with the saddle base support and, starting from this point, other bars form fork triangles of the rear wheel and the pedal box support.
  • the upper and lower bars of each of the triangles that make up the aforementioned rear fork are formed by a single bent tube, on whose elbow one of the supports of the rear wheel axle is attached.
  • the patent EP-A-0583221 describes a bicycle frame formed basically by a main bar formed by a double tube that relates the guide sleeve and support of the front wheel fork with the rear wheel supports and by a crossbar, embraced by said double tube, which relates the support of the saddle column with the pedal box.
  • This configuration although it is of great simplicity, requires considerably large section tubes and several reinforcements to provide the frame with the necessary stiffness, which results in a considerable increase in weight, apart from not having double triangular configuration necessary to participate in official competitions.
  • the utility model ES-A-1034637 presents a double triangular configuration frame provided with a main bar that relates the guide sleeve and support of the front wheel fork with the rear wheel supports, crossed transversely by a bar that Match the saddle column support to the pedal box.
  • the front triangle and the rear triangle are only joined by a vertex since the front triangle is closed by a bar that extends from the guide and support sleeve of the front wheel fork to the upper end of said bar transverse, close to the base of the saddle, while the rear triangle is closed inferiorly by two bars that go from the pedal box to the rear wheel supports.
  • This configuration does not take advantage of the stiffening properties which are derived from the juxtaposition of triangulations formed by bars, so tubes of considerably large section must be used to achieve the required stiffness.
  • an objective of the present invention is to provide a bicycle frame, of the triangular double configuration type, which provides greater stiffness of the torque transmission area between the pedals and the rear wheel, which facilitates better distribution of the weight of the cyclist on the wheels and the pedals, which provides more comfort for the cyclist thanks to a better posture and greater attenuation of vibrations and that provides constructive advantages over traditional frames.
  • a high performance bicycle frame of the type of triangular double configuration with a simple front triangle and two rear triangles that relate a carrier sleeve of the pedal box, supports of the Rear wheel axle and a saddle column support tube.
  • the upper bar of said front triangle and the upper bars of said rear triangles are practically longitudinally aligned, said upper bars of said rear triangles being attached to the sides of the rear end of said upper triangle bar. front, so that said support column of the saddle column is embraced by said upper bars of the rear triangle and attached thereto, and transversely adjacent and attached to said rear end of the upper bar of the front triangle.
  • the longitudinally aligned assembly formed by said upper bars of the rear triangles attached to the upper bar of the front triangle has a slight double arc with an inflection in the confluence zone with said support column of the saddle column which determines a connection with the same approximately perpendicular.
  • Both the lower bars of the rear triangles and the lower bar of the front triangle have a slight convex arc towards the inside of the respective triangles.
  • a triangular double configuration frame is achieved with a very small front triangle and a double rear triangle, with the bars formed by shorter sections than in a traditional frame, which configures a support fork for the wheel axle rear and an area for the pedal box of extraordinary rigidity.
  • the different tests carried out by the applicant have demonstrated in practice that the special configuration of the frame of the invention provides a more rational weight distribution, moving part of the weight of the cyclist who in the traditional type frames falls on the rear wheel towards the pedals and front wheel.
  • the frame The bicycle according to the present invention is intended to provide significant advantages of a constructive and commercial type that result in lower production and marketing costs. Thanks to this, the final price of such a frame is significantly lower than a traditional frame of similar benefits, so that many people who could not before, can now access a bicycle with high technical performance.
  • both the four arched bars that together with the support tube of the saddle column form the two rear triangles and the two bars that form the rotating fork for the front wheel are obtained from of the same tubular element of progressively decreasing cross section, conveniently arched.
  • both the upper bar and the lower bar of the front triangle are obtained from the same tubular element of conveniently arched continuous cross-section.
  • weld joint points are grouped and concentrated in a few easy-to-assemble knots.
  • This example of tubular embodiment is preferably produced with a light metal alloy, such as aluminum or titanium.
  • the bars are obtained from two open, molded, symmetrical profiles, assembled with the open faces facing, attached and joined, the sections corresponding to the upper and lower bars of the separated rear triangles being left, with the faces open into the separation space.
  • the bars are grouped so that a minimum number of separate pieces result, for example, two pieces formed by a profile each, joined to the two tubes of the structure: the handlebar and the saddle. A maximum of six welding points, which can be reduced to four, between the pipes and the profiles will hold tightly together The few pieces of the picture.
  • This exemplary embodiment can both be carried out from a synthetic material composed of carbon fiber and a light, injected metal alloy, such as aluminum.
  • a triangular double configuration frame is achieved with many of the advantages of monobloc frames.
  • the decrease in the number of parts and junction points also favors the aforementioned decrease in construction and storage costs.
  • the special configuration of the frame according to the invention allows the manufacture of a single frame size for an adult bicycle that can be adjusted to a wide variety of cyclists of any size and of different morphological characteristics. This also results in a decrease in the number of bicycles that a merchant must have stored to meet demand, which also favors a cheaper final price.
  • Fig. 1 is a general perspective view of an example of tubular embodiment of a bicycle frame according to the present invention
  • Fig. 2 is an exploded perspective view of another embodiment, in this case by molded parts, of a bicycle frame according to the present invention
  • Fig. 3 is a cross-sectional view of the profiles that form the Table bars in Fig. 2.
  • a high performance bicycle frame is observed.
  • Said frame is of the type of triangular double configuration, that is to say, with a simple front triangle and two rear triangles that relate a carrier sleeve of the pedal box (1), supports of the rear wheel axle (2a, 2b) and a support tube (3) of the saddle column.
  • This double triangular configuration conforms to the regulations of the International Cycling Union for road competitions.
  • the table of the present invention is characterized in that the upper bar (4) of said front triangle and the upper bars (5a, 5b) of said rear triangles are practically longitudinally aligned, and because said upper bars (5a, 5b) of the aforementioned Rear triangles are attached to the sides of the rear end (4a) of said upper bar (4) of the front triangle.
  • said support tube (3) of the saddle column is embraced by said upper bars (5a, 5b) of the rear triangle and joined in front of them, while being transversely adjacent to said rear end (4a) of the upper bar (4) of the front triangle and attached thereto. This results in a "knot" joining the aforementioned bars (3, 4, 5a,
  • the longitudinally aligned assembly formed by said upper bars (5a, 5b) of the rear triangles attached to the upper bar (4) of the front triangle has a slight double arc with an inflection in the confluence zone (6) with said support tube ( 3) of the saddle column that determines a connection with it of the bars (5a, 5b) and (4) approximately perpendicular, whose characteristic abounds in conferring the excellent stiffness and strength properties mentioned.
  • both the bottom bars (7a, 7b) of the rear triangles as the lower bar (8) of the front triangle have a slight convex arc towards the inside of the respective triangles.
  • tubular and molded in each of these techniques different materials can be used.
  • lightweight metallic aluminum or titanium alloy for the tubular frame and carbon fiber composite material or injected aluminum alloy for the molded frame for example, lightweight metallic aluminum or titanium alloy for the tubular frame and carbon fiber composite material or injected aluminum alloy for the molded frame.
  • both the four arched bars (5a, 5b, 7a, 7b) which together with the support tube (3) of the saddle column form the two rear triangles and two bars that form The rotating fork (not shown) for the front wheel is obtained from the same tubular element, of progressively decreasing cross section, conveniently arched.
  • both the upper bar (4) and the lower bar (8) of the front triangle are obtained from the same tubular element of constant cross section conveniently arched, both being, once assembled, joined by their front ends to a sleeve (9) of support and guide of the front fork, and joined together in a section (10) next to said sleeve.
  • tubular frame When the tubular frame is intended for a mountain bike includes a small transverse section of reinforcement (not shown) between the two lower bars (7a, 7b) of the rear triangle in an area close to the sleeve of the pedal box (1).
  • the six planned parts are: the support tube (3) of the saddle column, the support sleeve (9) of the front fork and guide, two supports (2a) and (2b) to support the frame on the axle of the rear wheel, and two profiles: the one mirror image of the other, both triangular with curved sides, a first one integrating some sections (5a, - 1 la, 7a réelle14a) corresponding to the set of bars (5a-4) and bars (7a) and (8) and a second profile integrating sections (5b, -1 lb, 7b complaint14b) corresponding to the set of bars (5b-4), (7b ) and (8), whose profiles are joined by assembling the sections (lia, 1 1 b) that form the upper bar (4) and sections (14a, 14b) that form the lower bar (8) of said front triangle.
  • the molded profiles (5a, - 1 l a, 7a réelle14a) and (5b, - 1 I b, 7b sanction 14b) are assembled and fixed to the support sleeve (9) of the front fork.
  • the support tube (3) of the saddle column is fixed in the confluence zone (6) with said two profiles and in an area of the pedal box (1) also formed in said profiles.
  • Fig. 3 a cross section of the profiles is shown in which it is appreciated that both profiles are symmetrical, and generally have a cross section in "E", with the open faces (12a, 12b) facing each other.
  • the section corresponding to the bar (4) in which, as explained above, both profiles are joined, the prominent edges (15a, 15b) of the fins of the ends of the profiles (line, 1 1b) are attached and joined by welding or by a suitable adhesive.
  • said molded profiles can be made of a composite material, such as carbon fiber, or by injection of a light metal alloy, such as aluminum.
  • the bicycle frame according to the present invention by virtue of its special configuration, incorporates a relatively long saddle column (not illustrated), conventionally coupled to the tube (3), which allows a height adjustment covering a wide range of positions.
  • This feature in addition to the obvious advantages of ergonomic type for the cyclist, represents great advantages for traders, clubs and associations of cyclists, because they do not have the need to have a large number of bicycles of different sizes to cover all the range of different morphological characteristics of potential users.
  • One skilled in the art could introduce some modifications or inclusions without departing from the scope of the present invention, which is defined by the appended claims.

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

Abstract

Cadre de bicyclette de type à double configuration triangulaire, ayant un triangle avant simple et deux triangles arrière qui sont associés par un cylindre portant le pédalier (1), des supports de l'axe de la roue arrière (2a, 2b) et un tube support (3) de la tige de selle; la barre supérieure (4) du triangle avant et les barres supérieures (5a, 5b) des triangles arrière sont pratiquement alignées longitudinalement; les barres supérieures (5a, 5b) des triangles arrière étant jointes aux côtés de l'extrémité postérieure (4a) de la barre supérieure (4) du triangle avant. Le tube (3) de support de la colonne de la selle est entouré par lesdites barres supérieures (5a, 5b) du triangle arrière en formant un noeud de jonction entre le tube (3) et les barres (5a, 5b) et au niveau de l'extrémité postérieure (4a) de la barre supérieure (4) du triangle avant.
PCT/ES1999/000072 1999-03-22 1999-03-22 Cadre de bicyclette WO2000056593A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU28380/99A AU2838099A (en) 1999-03-22 1999-03-22 Bicycle frame
PCT/ES1999/000072 WO2000056593A1 (fr) 1999-03-22 1999-03-22 Cadre de bicyclette

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/ES1999/000072 WO2000056593A1 (fr) 1999-03-22 1999-03-22 Cadre de bicyclette

Publications (1)

Publication Number Publication Date
WO2000056593A1 true WO2000056593A1 (fr) 2000-09-28

Family

ID=8306930

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/ES1999/000072 WO2000056593A1 (fr) 1999-03-22 1999-03-22 Cadre de bicyclette

Country Status (2)

Country Link
AU (1) AU2838099A (fr)
WO (1) WO2000056593A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7918471B2 (en) 2005-07-29 2011-04-05 Orbea, S. Coop. Ltda. Bicycle frame
AT16048U1 (de) * 2014-10-22 2018-12-15 Fraundorfer Christoph Fahrradrahmen sowie Verfahren zur Herstellung eines Fahrradrahmens

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0399075A1 (fr) * 1989-05-24 1990-11-28 Look S.A. Cadre de bicyclette et son procédé de fabrication
EP0583221A1 (fr) 1992-08-13 1994-02-16 Alusuisse-Lonza Services Ag Cadre de bicyclette
FR2711962A1 (fr) * 1993-11-03 1995-05-12 Ricard Joel Cadre de bicyclette constitué de tubes soudés, à section ovoïde ou ronde, évolutive ou non, permettant d'obtenir une excellente rigidité.
ES2072203A2 (es) 1993-07-09 1995-07-01 Univ Madrid Complutense Bicicleta perfeccionada y sistema de reglaje de sillin.
EP0667281A1 (fr) 1994-02-10 1995-08-16 M.& M. S.r.l. Cadre de construction standardisée pour bicyclettes à deux roues

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0399075A1 (fr) * 1989-05-24 1990-11-28 Look S.A. Cadre de bicyclette et son procédé de fabrication
EP0583221A1 (fr) 1992-08-13 1994-02-16 Alusuisse-Lonza Services Ag Cadre de bicyclette
ES2072203A2 (es) 1993-07-09 1995-07-01 Univ Madrid Complutense Bicicleta perfeccionada y sistema de reglaje de sillin.
FR2711962A1 (fr) * 1993-11-03 1995-05-12 Ricard Joel Cadre de bicyclette constitué de tubes soudés, à section ovoïde ou ronde, évolutive ou non, permettant d'obtenir une excellente rigidité.
EP0667281A1 (fr) 1994-02-10 1995-08-16 M.& M. S.r.l. Cadre de construction standardisée pour bicyclettes à deux roues

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7918471B2 (en) 2005-07-29 2011-04-05 Orbea, S. Coop. Ltda. Bicycle frame
AT16048U1 (de) * 2014-10-22 2018-12-15 Fraundorfer Christoph Fahrradrahmen sowie Verfahren zur Herstellung eines Fahrradrahmens

Also Published As

Publication number Publication date
AU2838099A (en) 2000-10-09

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