EP1912855A2 - Cadre de vehicule et procede de fabrication d'un vehicule - Google Patents

Cadre de vehicule et procede de fabrication d'un vehicule

Info

Publication number
EP1912855A2
EP1912855A2 EP06842724A EP06842724A EP1912855A2 EP 1912855 A2 EP1912855 A2 EP 1912855A2 EP 06842724 A EP06842724 A EP 06842724A EP 06842724 A EP06842724 A EP 06842724A EP 1912855 A2 EP1912855 A2 EP 1912855A2
Authority
EP
European Patent Office
Prior art keywords
frame
vehicle
motorcycle
assembly
portions
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Withdrawn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
EP06842724A
Other languages
German (de)
English (en)
Other versions
EP1912855A4 (fr
Inventor
Abraham Joseph
Vivek Nilkanth Patwardhan
Prashant Ramesh Deshpande
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.)
Bajaj Auto Ltd
Original Assignee
Bajaj Auto 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 Bajaj Auto Ltd filed Critical Bajaj Auto Ltd
Publication of EP1912855A2 publication Critical patent/EP1912855A2/fr
Publication of EP1912855A4 publication Critical patent/EP1912855A4/fr
Withdrawn legal-status Critical Current

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
    • B62K11/00—Motorcycles, engine-assisted cycles or motor scooters with one or two wheels
    • B62K11/02—Frames
    • B62K11/04—Frames characterised by the engine being between front and rear wheels
    • 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
    • B62K15/00—Collapsible or foldable cycles
    • 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
    • B62K19/30—Frame parts shaped to receive other cycle parts or accessories
    • 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
    • B62K15/00—Collapsible or foldable cycles
    • B62K2015/001—Frames adapted to be easily dismantled

Definitions

  • This invention relates to a vehicle frame and a method of assembly of a vehicle comprising a frame, which is particularly applicable to motorcycle manufacture.
  • a motorcycle frame is a load bearing structure normally fabricated as a single piece (except for the front fork assembly which is normally a separate sub-assembly of the motorcycle) using components such as steel tube sections, channel sections and gussets welded together in a predetermined configuration.
  • Parts of the motorcycle such as the seat, side cover, trailing arm, stand, f ⁇ otrest, fuel tank and shock absorbers, grab handles and steering assemblies are mounted or fixed on the frame at predetermined locations.
  • the frame Besides providing basic strength and stiffness to the motorcycle and holding the vehicle parts and bearing the weight thereof, the frame also takes loads resulting from engine vibrations, gear change forces, wheel excitation (due to bumps and corners on the roads) and handling loads such as putting the vehicle on or off a stand.
  • Such a single piece frame is a long, heavy and bulky structure.
  • the frame may require corrective operations like straightening thereby leading to additional operations and increasing the manufacturing time.
  • An object of the invention is to provide a frame assembly of a vehicle, particularly a motorcycle, which may be easily assembled at a Vehicle assembly location.
  • Another or alternative object of the invention is to provide a frame assembly for a motorcycle which facilitates assembly of different parts on the frame portions or members at different locations so as to minimize assembly operations at the vehicle assembly stage thereby reducing the vehicle assembly line space, material handling capacity and time required for vehicle assembly.
  • Another or alternative object of the invention is to provide a frame assembly of a motorcycle which can be transported from one place to another, for instance from manufacturing location to vehicle assembly location in a disassembled state and easily assembled together at the vehicle assembly location thereby making it possible to transport the frame assemblies in large quantities easily and conveniently, reducing risk of damage and distortions to the frame.
  • Another or alternative object of the invention is to provide a frame assembly of a motorcycle which can be shipped in a disassembled state and more easily assembled at the vehicle assembly location thereby reducing space and packing requirements for shipping and shipping cost as more frame assemblies than single piece frames may be shipped per unit container volume.
  • Another or alternative object of the invention is to provide a frame assembly for a motorcycle which facilitates different surface treatments on the frame assembly at different locations in a straightforward cost-effective manner.
  • Another or alternative object of the invention is to provide a frame assembly for a motorcycle which facilitates alternative use of rear frame portion to be suitable to carry pillion seat or act as a load carrying member or can be adapted to mount an utility tray.
  • the present invention provides a vehicle frame comprising a plurality of interconnectable frame portions, wherein one frame portion is assembled in a first location with vehicle components to form an intermediate frame component which is assembled to the remainder of said frame portions at a second location different from the first location.
  • a frame may be used in a method of vehicle manufacture. An important application of such a method of manufacture is the field of motorcycles but other vehicles comprising frames may be envisaged. Such a method avoids disadvantages of the above-noted kind and, in particular, allows assembly plants to be reduced in size while reducing the risk of frame distortion encountered using current assembly methods.
  • the motorcycle frame may comprise a front frame portion and a rear frame portion connected to the front frame portion wherein the front frame portion bears the load of a rider of the motorcycle.
  • the frame may be split into portions at a point allowing the front frame portion to bear the load of the rider.
  • Such a composite frame forms a further aspect of the present invention.
  • a still further aspect of the invention provides a method of motorcycle production line management comprising the steps of: a) providing motorcycle frame portions, at least one frame portion being assembled with motorcycle components to form a sub-assembly at a first optimal location for fabrication of the sub assembly; and ' b) assembling the sub-assembly and remaining frame portions to fabricate a motorcycle frame at a second optimal location for manufacture of the motorcycle wherein the optimal locations are selected to minimize the number of treatment steps required to address frame distortion during production.
  • the first and second optimal locations may, advantageously, be different from each other.
  • a frame assembly for a motorcycle comprising at least two frame portions, namely a front portion and a rear portion, the front portion and rear portion being fabricated in a known manner in predetermined configuration, the front portion being adapted to accept a steering and front suspension sub-assembly, and the front and rear portions being provided with interconnection means to interlock and secure the rear portion to the front portion.
  • the interconnection means does not rely on welding the frame portions together.
  • the interconnection means is of a mechanical nature, such as bolting, pinning or riveting. Rigid interconnection means may be used.
  • the front portion and rear portion of the frame have a finished surface prior to interconnection to each other.
  • At least the front frame portion includes fitment means at predetermined locations to mount the parts of the motorcycle such as seat, side cover, trailing arm, stand, footrest, fuel tank, shock absorbers, grab, and steering to the frame.
  • fitment means at predetermined locations to mount the parts of the motorcycle such as seat, side cover, trailing arm, stand, footrest, fuel tank, shock absorbers, grab, and steering to the frame.
  • the interconnection means comprises a pair of spaced forearms provided at the front end of the rear portion, the arms having open slots at the tip thereof adapted to be engaged over laterally extending studs provided at the rear end of the front portion, a pair of spaced bushes provided at the front end of the rear portion and a pair of oppositely disposed U-shaped brackets provided at the rear end of the front portion, the bushes being located in the U-shaped bracket's and bolted rigidly to fit together the front portion and rear portion.
  • the laterally extending studs provided at the rear end of the front portion also act as upper attachment points for a pair of rear shock absorbers.
  • production line flexibility may be increased as different versions of the rear frame portion can be selected from a suite of available rear frame portions and used on the same front frame portion.
  • one design of rear frame portion may be suitable for carrying a load such as a pillion passenger or a utility tray. In that case, the rear frame portion would carry a seat, whilst an alternative design may be suitable to act as a load carrier or may be adapted to fit a goods carrying utility tray.
  • this invention allows selection of a front frame portion from a suite of different versions of the front frame portion for assembly onto a rear frame portion.
  • versatility may be increased at the assembly production line by using common front portions with different rear portions or vice versa for different versions of the final motorcycle.
  • the rear frame portion is received at the final motorcycle assembly line, with other parts already assembled to it, such as a rear mudguard, or grab handle.
  • the rear frame portion forms part of an intermediate frame component, which is connected to the remaining frame portions at the final assembly site.
  • the above embodiments of the invention allow manufacturing distortions to be minimised and allow more economy of space at the assembly plant. Packing requirements are also reduced since the division of the frame into portions allows packaging of smaller components. Transportation of a large bulky single piece frame is avoided.
  • Figures 1, 2 and 3 are side view, plan and isometric views, respectively of a frame assembly for a motorcycle according to an embodiment of the invention
  • Figures 4, 5 and 6 are side view, plan and isometric views, respectively, of the front frame portion of the frame assembly of Figures Ii, 2 and 3;
  • Figures 7, 8 and 9 are side view, plan and isometric views, respectively of the rear frame portion of the frame assembly of Figures 1, 2 and 3;
  • Figure 10 is a side view of a motorcycle comprising the frame assembly of Figures 1, 2 and 3 having different parts of the motorcycle assembled thereon;
  • Figures 11, 12 and 13 are side view, plan and isometric views, respectively, of the front frame portion of a frame assembly according to another embodiment of the invention
  • Figures 14, 15 and 16 are side view, plan and isometric views, respectively of the front frame portion of a frame assembly according to another embodiment of the invention
  • Figure 17 illustrates the sub assembly of rear frame comprising of different components mounted on it.
  • Figure 18 illustrates an outline of a rider on the vehicle with frame assembly with two portions according to the invention.
  • the frame assembly or split frame 1 as illustrated in Figures 1 to 9 of the accompanying drawings comprises two frame portions, namely a front frame portion 2 and a rear frame portion 3. Both the front frame portion 2 and rear frame portion 3 are fabricated independently in a known manner, for instance, using components - such as steel tube sections (square, rectangular, circular, oval etc), channel section and gussets by welding them together in a predetermined configuration.
  • the front and rear frame portions 2 and 3 are provided with fitments at predetermined locations to mount or fix parts of the motorcycle in a known manner.
  • head pipe 4 mounts the steering 4a and handle bar shaft (not shown) of the motorcycle shown in Figure 10 of the drawings.
  • Such fitments also include the following. Brackets for mounting the engine 5j of the motorcycle ( Figure 10) are marked 5,5. Bolt holes for mounting the engine are marked
  • Mounting bracket 6 is for mounting the fuel tank 27 and seat 28 of the motorcycle ( Figure 10). Brackets for mounting the shock absorbers (not shown) of the motorcycle are marked 7, 7 ( Figure 5) and the studs therein are marked 7a and 7b.
  • Holes 8a and 8b are mounting holes to mount air filter 8 of the motorcycle.
  • 9a and 9b are bushes for mounting the air filter.
  • Mounting bracket 10 mounts the seat lock (not shown) of the motorcycle and its associated bolt holes are marked 10a and 10b ( Figure 9).
  • Brackets 12a and 12b are the mounting brackets for the grab handle 12c of the motorcycle.
  • Bracket 14 is a mounting bracket for a guard, which prevents clothing on the legs of the pillion rider getting entangled with the rear wheel of the motorcycle.
  • 16a, 16b, 16c and 16d are mounting location of footrest assembly 16 ( Figure 10) of the rider of the motorcycle, which is directly supported at the bottom of the engine.
  • 17a, 17b and 20 are mounting locations of the bracket 20a for the footrest assembly of the pillion rider (not shown) of the motorcycle.
  • 18 is mounting location for the brake pedal 18a on bracket 5 of the motorcycle.
  • the mounting location for the trailing arm 29 of the motorcycle is 20.
  • Bolt holes mounting the rear fender are marked 22a, 22b, 22c and 22d ( Figure 9).
  • Mounting location for the stand 13a of the motorcycle is marked 13.
  • Locations for mounting the side covers of the motorcycle are marked 25a, 25b and 27a, 27b.
  • the front end of the rear frame portion 3 is provided with a pair of forearms 19a and 19b having open slots 19c and 19d at the tips thereof adapted to be engaged over laterally extending studs 7a and 7b provided at the rear end of the front portion.
  • the forearms 19a and 19b are clamped onto the studs 7a and 7b by nuts (not shown) after inserting the top eyelets of the shock absorber (not shown) of the motorcycle over the studs.
  • 21a and 21b are a pair of spaced bushes provided on spaced arms 15a and 15b respectively at the front end of the rear frame portion 3 and 11a and l ib are pair of oppositely disposed U-shaped brackets provided at the rear end of the front portion.
  • the brackets 11a and l ib are each provided with holes 3 Ia, 3 Ib in the flanges thereof.
  • the bushes 21a and 21b are located in the brackets and bolted to the brackets by running bolts 23a, 23b through the bushes 21a and 21b and the holes in the flanges of the brackets and tightening the bushes in the U-shaped brackets nuts 24a and 24b with the rear frame portion 3 and front frame portion 2 positioned in tandem so as to rigidly fit the front and rear frame portions 2 and 3 together.
  • the front and rear frame portions 2 and 3 are thus easily rigidly assembled together by nuts and bolts as rigid interconnection means.
  • the frame portions 2 and 3 may be easily dismantled by removing the nuts and bolts.
  • FIG. 18 depicts the outline of a rider on the motorcycle with this invention. It may be observed that the frame assembly is split at a point below and towards the rear of the seating point of the rider. The rider is sitting on the front portion of the frame assembly; hence the front portion of the frame assembly bears the load of the rider, which is an aspect of the invention.
  • the front frame portion 2 of the split frame as illustrated in Figures 11 to 13 of the accompanying drawings is similar to that of Figures 1 to 6 except that the former includes a cradle 32 welded to sections 33 and 34 of the front frame portion 2.
  • the footrest assembly 16 is mounted on the cradle 32 at locations marked 16a, 16b, 16c and 16d. 13 is a mounting location for the stand.
  • the rear frame portion 3 illustrated in Figures 7 to 9 is connected to the front frame portion 2 as described earlier.
  • the front frame portion 2 of the split frame is illustrated in Figures 14 and 16 of the accompanying drawings is similar to that of Figures 1 to 6 except that the former includes a cradle 35 welded to the head pipe 4 and sections 36a, 36b and 37.
  • the engine is mounted on the cradle at location 5a, 5b, 5c, 5d, 5e, 5f, 5g, 5h, and 5i.
  • the footrest is mounted on the cradle at locations 16a, 16b, 16c and 16d. 13a, 13b are mounting locations for the stand.
  • the rear portion of the frame as illustrated in Figures 7 to 9 is attached to the front portion as described earlier.
  • FIG 17 illustrates the rear frame subassembly comprising of rear frame portion 3, rear fender 40, tail lamp 41, blinkers 42 and vehicle number plate 43.
  • the tail lamp 41, blinkers 42 and vehicle number plate 43 are mounted on rear fender 40.
  • Rear fender 40 is in turn mounted on rear frame 3 at locations marked as 22a, 22c and 22b, 22d. This sub assembly can be directly taken to vehicle assembly line and connected to front frame assembly.
  • the motorcycle frame portions 2 and 3 of a motorcycle can be easily assembled at the vehicle assembly location.
  • the frame portions 2 and 3 are individually considerably smaller in size as compared to the whole frame.
  • the frame 1 can be transported in disassembled state from one place to another, for instance, from manufacturing location to vehicle assembly location. Therefore, it is possible to transport the frames easily and conveniently and without causing damage/distortions. Assembly/mounting of parts on front and rear portions of the frame can be done at a location other than the vehicle assembly line and only few parts need to be assembled on the vehicle assembly line. This increases production line flexibility and reduces the space and material handling capacity required for the vehicle assembly. The time for vehicle assembly is also reduced. Frame 1 can be shipped long distances in disassembled state with reduced packing. The space and packing requirements for shipping and shipping cost are, therefore, reduced. It is also possible to give different types of surface treatment to the frame at different locations easily and in a cost effective manner.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automatic Assembly (AREA)
  • Automatic Cycles, And Cycles In General (AREA)
  • Body Structure For Vehicles (AREA)
  • Automobile Manufacture Line, Endless Track Vehicle, Trailer (AREA)
  • Handcart (AREA)

Abstract

L'invention concerne un cadre de véhicule (1) comprenant une pluralité de parties de cadre interconnectables (1 à 31b), une de ces parties (2) étant assemblée dans un premier emplacement au moyen de composants de véhicule, de manière à former un composant de cadre intermédiaire assemblé au reste des parties de cadre au niveau d'un second emplacement différent du premier. Le cadre (1) peut être séparé en différentes parties au niveau d'un point permettant à la partie de cadre avant (50) de supporter le poids du conducteur. Le cadre selon l'invention permet de minimiser les opérations d'assemblage au niveau de l'étape d'assemblage du véhicule, réduisant ainsi l'espace de la chaîne de montage de véhicule, la capacité de manutention et le temps nécessaire à l'assemblage du véhicule. Les parties (1 à 31b) du cadre de véhicule (1) mettent en place un ensemble de cadre destiné à un véhicule et facilitant divers traitements de surface sur l'ensemble de cadre au niveau de divers emplacements de manière directe et rentable.
EP06842724A 2005-08-09 2006-08-08 Cadre de vehicule et procede de fabrication d'un vehicule Withdrawn EP1912855A4 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
IN924MU2005 2005-08-09
IN620MU2006 2006-04-20
PCT/IN2006/000308 WO2007052298A2 (fr) 2005-08-09 2006-08-08 Cadre de vehicule et procede de fabrication d'un vehicule

Publications (2)

Publication Number Publication Date
EP1912855A2 true EP1912855A2 (fr) 2008-04-23
EP1912855A4 EP1912855A4 (fr) 2009-10-21

Family

ID=38006309

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06842724A Withdrawn EP1912855A4 (fr) 2005-08-09 2006-08-08 Cadre de vehicule et procede de fabrication d'un vehicule

Country Status (11)

Country Link
EP (1) EP1912855A4 (fr)
AR (1) AR057740A1 (fr)
BR (1) BRPI0614599A2 (fr)
CR (1) CR9714A (fr)
DO (1) DOP2006000186A (fr)
EC (1) ECSP088158A (fr)
GT (1) GT200600367A (fr)
MX (1) MX2008001896A (fr)
PE (1) PE20070559A1 (fr)
TW (1) TW200730388A (fr)
WO (1) WO2007052298A2 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8579063B2 (en) 2007-06-29 2013-11-12 Harley-Davidson Motor Company Group, Inc. Motorcycle having detachable support members
US7770683B2 (en) 2008-07-16 2010-08-10 Harley-Davidson Motor Company Group, Inc. Three-wheeled vehicle
US8851496B2 (en) 2008-07-16 2014-10-07 Harley-Davidson Motor Company Group, LLC Motorcycle having a multi-piece frame assembly
JP6171744B2 (ja) * 2013-09-03 2017-08-02 スズキ株式会社 自動二輪車の車体フレーム
TWI606952B (zh) * 2014-08-27 2017-12-01 光陽工業股份有限公司 Rear frame assembly
CN105383616B (zh) * 2014-09-09 2019-04-05 光阳工业股份有限公司 后车架组件
JP2016088231A (ja) * 2014-10-31 2016-05-23 ヤマハ発動機株式会社 鞍乗型車両
JP2018158658A (ja) * 2017-03-23 2018-10-11 川崎重工業株式会社 鞍乗型車両

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6393292U (fr) * 1986-12-09 1988-06-16
JPH02158481A (ja) * 1988-12-10 1990-06-18 Honda Motor Co Ltd 自動二輪車のリヤフレーム
US5036938A (en) * 1989-03-13 1991-08-06 Blount Wendell G Disassemblable riding scooter
US20040195035A1 (en) * 2003-04-04 2004-10-07 Masao Takeshima Frame structure in saddle type vehicle and method of manufacturing frame

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4203204A (en) * 1979-01-02 1980-05-20 The Boeing Company Apparatus for the automated assembly of major subassemblies
US4660854A (en) * 1984-12-18 1987-04-28 Yamaha Hatsudoki Kabushiki Kaisha Frame construction for motorcycles
US4730870A (en) * 1986-03-14 1988-03-15 American Motors Corporation Modular vehicle construction and assembly method
US5284221A (en) * 1992-03-11 1994-02-08 Monte Warne Motorcycle frame
JP3644720B2 (ja) * 1995-05-17 2005-05-11 本田技研工業株式会社 ユニットスイング式車両の車体構造
JPH0995279A (ja) * 1995-09-29 1997-04-08 Honda Motor Co Ltd 自動二輪車の車体フレーム
JP4067661B2 (ja) * 1998-09-11 2008-03-26 本田技研工業株式会社 自動二輪車の車体フレーム構造
JP4648529B2 (ja) * 2000-09-21 2011-03-09 本田技研工業株式会社 車両

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6393292U (fr) * 1986-12-09 1988-06-16
JPH02158481A (ja) * 1988-12-10 1990-06-18 Honda Motor Co Ltd 自動二輪車のリヤフレーム
US5036938A (en) * 1989-03-13 1991-08-06 Blount Wendell G Disassemblable riding scooter
US20040195035A1 (en) * 2003-04-04 2004-10-07 Masao Takeshima Frame structure in saddle type vehicle and method of manufacturing frame

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2007052298A2 *

Also Published As

Publication number Publication date
WO2007052298A3 (fr) 2007-08-23
AR057740A1 (es) 2007-12-12
EP1912855A4 (fr) 2009-10-21
ECSP088158A (es) 2008-04-28
WO2007052298A2 (fr) 2007-05-10
WO2007052298B1 (fr) 2007-10-04
PE20070559A1 (es) 2007-07-29
BRPI0614599A2 (pt) 2011-04-05
MX2008001896A (es) 2008-03-26
TW200730388A (en) 2007-08-16
GT200600367A (es) 2009-07-09
DOP2006000186A (es) 2007-06-30
CR9714A (es) 2008-08-06

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