NL2013352B1 - Electric bike. - Google Patents

Electric bike. Download PDF

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Publication number
NL2013352B1
NL2013352B1 NL2013352A NL2013352A NL2013352B1 NL 2013352 B1 NL2013352 B1 NL 2013352B1 NL 2013352 A NL2013352 A NL 2013352A NL 2013352 A NL2013352 A NL 2013352A NL 2013352 B1 NL2013352 B1 NL 2013352B1
Authority
NL
Netherlands
Prior art keywords
frame portion
electric bicycle
lower frame
front case
upper frame
Prior art date
Application number
NL2013352A
Other languages
Dutch (nl)
Inventor
Alagourie Ghassan
Christianus Oor Theodorus
Theodoor Henric Pelgrim Maarten
Gerard Herman Bluemink Robert
Original Assignee
Koninklijke Gazelle N V
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 Koninklijke Gazelle N V filed Critical Koninklijke Gazelle N V
Priority to NL2013352A priority Critical patent/NL2013352B1/en
Application granted granted Critical
Publication of NL2013352B1 publication Critical patent/NL2013352B1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M6/00—Rider propulsion of wheeled vehicles with additional source of power, e.g. combustion engine or electric motor
    • B62M6/40—Rider propelled cycles with auxiliary electric motor
    • 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
    • B62K13/00—Cycles convertible to, or transformable into, other types of cycles or land vehicle

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Automatic Cycles, And Cycles In General (AREA)

Abstract

Electric bike (1) and method of manufacturing such a bike. The bike comprises a frame (2) with at least two load bearing frame modules, including a lower frame part (6) carrying a drive train with an electrically assisted pedal drive, and at least one upper frame part (7). A lower edge (9) of the upper frame part is joint to an upper edge (11) of the lower frame part.

Description

ELECTRIC BIKE
The invention pertains to an electric bike or e-bike, such as a pedelec. An electric bike typically comprises a drive train with a pedal drive and an electric motor drive in parallel.
An example of an electric bike is disclosed in EP 0 559 231 A1. An electric bike typically has a large number of components, particularly in its drive train, such as a rechargeable battery, an electric motor, a controller, sensors, etc. This makes assembly of an electric bike substantially more complex and expensive than assembly of a regular bike.
It is an object of the invention to provide a fast and flexible way of assembling an electric bike.
The object of the invention is achieved with an electric bike comprising a frame with at least two load bearing frame modules, including a lower frame part carrying a drive train with an electrically assisted pedal drive, and at least one upper frame part, wherein a lower edge of the upper frame part is joint to an upper edge of the lower frame part.
This way, a single standard drive train module, or a limited number of standard drive train modules, can be used, which can be combined with an upper frame of any desired size or type. Particularly due to the edge-to-edge connection, a range of upper frames of varying dimensions can be combined with a single standard drive train module with all drive train elements. This allows a high degree of rationalization of manufacture and assembly.
Modular bike frames for pedal drive bikes are known from NL 1033504 and EP 1 637 444 A2. However, these do not disclose or suggest to integrate a drive train in a single lower frame module .
In a specific embodiment, the upper frame part may comprise a head tube. The upper frame part may for example comprise a down tube extending between the head tube and a central section forming the lower edge connected to the upper edge of the lower frame part. The upper frame part may also comprises a seat tube. Such a seat tube may for example extend from a rear part of the central section of the upper frame part. This results in a U-shaped upper frame part, e.g., with a rearwardly inclined seat tube and a forwardly inclined down tube .
In this context the word "tube" does not necessarily refer to parts with a hollow cylindrical cross section. The tube parts may have any suitable cross section.
The lower frame part may for example comprise a front housing and chain stays extending from a lower side of the front housing. Such a front housing can for example be used for encasing an electric motor, a rechargeable battery, a controller and/or further electric components of the drive train. It can also be used to protect the chain wheel, for instance by positioning the chain wheel sunk and flush with a side face of the front housing of the lower frame part.
In a specific embodiment, the lower frame part comprises a seat stay at either side of the rear wheel extending between a rear end of the upper edge and a hub of the rear wheel. Optionally, the outer ends of the chain stays and the seat stays are connected to form an open ring with the front housing of the lower frame part. This contributes to a firm and strong but light weight structure.
To protect the chain or belt of the bike, its lower run can for example be positioned at the level of the chain stays.
Optionally, the front housing of the lower frame part may have a front side aligned with the down tube. The front housing may also have a back side parallel to the front side.
To provide the bike with an open and transparent look, the upper edge of the lower frame part may have a front section formed by the front housing and a rear section connected to the seat stays, leaving an opening, e.g., a substantially triangular opening, between the rear wheel, the front housing and the upper edge in side view of the bike.
In a specific exemplary embodiment, the joint upper and lower edges of the respective lower and upper frame parts may be visually in line with the front wheel hub in side view of the electric bike.
In a specific embodiment the joint edges of the upper and lower frame parts may comprise at least one cable passage, e.g., for the passage of cables connecting the controller of the electric motor to one or more control elements on the steer bar.
The upper and lower frame parts can be connected with each other using any suitable type of connection, such as screw or bolt connections, preferably hidden within the interior of the frame parts, welding connection or connection by an industrial adhesive .
The lower and/or upper frame parts may comprise load bearing elements encased within an outer shell, or they may be formed as monocoques or semi-monocoques.
The frame parts can for example be made of steel, aluminium or composite materials.
The present invention also relates to a modular set of frame parts to manufacture an electric bike as disclosed above. The modular set may for example comprise a single standard lower frame part comprising the drive train components and a range of exchangeable upper frame parts of different shapes or sizes, e.g., to enable manufacture the same type of bike in different sizes and/or to manufacture different types of bikes using the same drive module. For instance, the modular set may comprise upper frame parts for utility bikes, mountain bikes, racing bikes, touring bikes, hybrid bikes, cruiser bikes, BMX bikes, tandems, lowriders, folding models, amphibious bikes and/or recumbents.
The invention also relates to the frame parts as such and to a method of manufacturing a bicycle frame using such modular frame parts.
The invention will be further explained with reference to the accompanying drawings .
Figure 1: shows an exemplary embodiment of an electric bike according to the invention;
Figure 2: shows the bike of Figure 1 in side view;
Figure 3: shows the lower frame part of the bike of Figure 1 in more detail;
Figure 4: shows schematically the drive train components of the bike of Figure 1;
Figure 5: shows in a longitudinal cross section the connection between the upper and lower frame parts of the bike of Figure 1;
Figure 6: shows the connection of Figure 5 in cross section.
Figure 1 shows an electric bike 1 with a frame 2 supported by a front wheel 3 and a rear wheel 4. The frame 2 is built of two load bearing frame modules, including a lower frame part 6 and an upper frame part 7. A lower edge 9 of the upper frame part 7 is joint to an upper edge 11 of the lower frame part 6 to provide a linear connection. In the shown exemplary embodiment the linear connection between the upper and lower edges 9, 11 of the respective lower and upper frame parts 6, 7 is visually in line with the front wheel hub (not shown).
The upper frame part 7 comprises a head tube 12 containing a headset holding a fork 13 which is connected to the hub of the front wheel 3 and which comprises a top end with a steer bar 14.
The upper frame part 7 further comprises a down tube 16 extending between the head tube 12 and a central section 17 forming the lower edge 9 connected to the upper edge 11 of the lower frame part 6. The upper frame part 7 also comprises a seat tube 18 carrying a saddle 19. The seat tube 18 extends from a rear part of the central section 17 of the upper frame part 7 and is rearwardly inclined.
The lower frame part 6 encases a drive train with an electric motor assisted pedal drive. Cranks 21 allow pedal driving of a chain ring 22 engaging a chain 23 driving sprockets 24 on the axis of the rear wheel 4. The lower frame part 6 comprises a front housing 26 and chain stays 27 extending rearwardly from a lower side of the front housing 26. In side view the lower run of the chain 23 is visually hidden behind the chain stays 27.
As indicated schematically in Figure 4, the front housing 26 encases the drive train, including an electric motor 28 and a rechargeable battery 29. At one side, the front housing 26 comprises a circular recess 31. The chain ring 22 is sunk within the recess 31, such that the chain ring 22 is flush with the side surface of the front housing 26.
The lower frame part 6 comprises a seat stay 32 at either side of the rear wheel 4. The seat stays 32 extend between a rear end of the upper edge 11 and a hub of the rear wheel 4. The outer ends of the chain stays 27 and the seat stays 32 are connected to form an open ring with the front housing 26 of the lower frame part 6.
The front housing 26 has a front side 33 aligned with the down tube 16 and a back side 34, which is parallel to the front side 33.
The upper edge 11 of the lower frame part 6 has a front section formed by the front housing 26 and a rear section 36 connected to the seat stays 32. A triangular opening 37 is bordered by the rear wheel 4, the front housing 26 and the upper edge 11 in side view of the bike 1.
Figures 5 and 6 show a possible way of connecting the upper and lower frame parts 6, 7. The lower edge 9 of the upper frame part 7 is provided with a first girder 41 anchored to the upper frame part 7 by bushes 42 provided with threaded openings 43 for receiving matching bolts 44. Similarly, the upper edge 11 of the lower frame part 6 is provided with a second girder 46 with bolt receiving openings. The two girders 41, 46 have matching profiles forming a fit when the two are stacked. Bolts 44 are used to bolt the two girders 41, 46 together so as to connect the two frame parts 6, 7.
The lower frame part 6 with the drive train components can also be combined with an upper frame part of a different size or a different type of bicycle. Since one or a few standard lower frame parts with drive train components can be combined with a large variety of upper frame parts, a high degree of rationalization of manufacture and assembly can be achieved.

Claims (18)

1. Elektrische fiets (1) voorzien van een frame (2) met tenminste twee dragende frame modules, waaronder een onderste framegedeelte (6) met een aandrijfsysteem omvattende een elektrisch ondersteunde pedaalaandrijving, en tenminste één bovenste framegedeelte (7), waarbij een onderrand (9) van het bovenste framegedeelte bevestigd is aan een bovenrand (11) van het onderste framegedeelte.An electric bicycle (1) provided with a frame (2) with at least two bearing frame modules, including a lower frame portion (6) with a drive system comprising an electrically supported pedal drive, and at least one upper frame portion (7), wherein a lower edge ( 9) of the upper frame portion is attached to an upper edge (11) of the lower frame portion. 2. Elektrische fiets volgens conclusie 1, waarbij het bovenste framegedeelte (7) een balhoofdbuis (12) omvat.The electric bicycle of claim 1, wherein the upper frame portion (7) comprises a head tube (12). 3. Elektrische fiets volgens conclusie 2, omvattende een onderbuis (16) die zich uitstrekt tussen de balhoofdbuis (12) en een middengedeelte (17) dat de onderrand van het bovenste framegedeelte vormt, dat is bevestigd aan de bovenrand van het onderste framegedeelte.An electric bicycle according to claim 2, comprising a lower tube (16) extending between the head tube (12) and a middle portion (17) that forms the lower edge of the upper frame portion, which is attached to the upper edge of the lower frame portion. 4. Elektrische fiets volgens een van de voorgaande conclusies, waarbij het bovenste framegedeelte (7) een zitbuis (18) omvat.An electric bicycle according to any one of the preceding claims, wherein the upper frame portion (7) comprises a seat tube (18). 5. Elektrische fiets volgens conclusie 4, waarbij de zitbuis (18) zich uitstrekt vanaf een achterste deel van het middengedeelte (17) van het bovenste framegedeelte (7).The electric bicycle of claim 4, wherein the seat tube (18) extends from a rear portion of the middle portion (17) of the upper frame portion (7). 6. Elektrische fiets volgens een van de voorgaande conclusies, waarbij het onderste framegedeelte (6) een voorkast (26) omvat en een liggende achtervork (27) die zich uitstrekt vanaf een onderzijde van de voorkast.An electric bicycle according to any one of the preceding claims, wherein the lower frame portion (6) comprises a front case (26) and a horizontal rear fork (27) extending from a bottom side of the front case. 7. Elektrische fiets volgens conclusie 6, waarbij de voorkast (26) een elektromotor (28), een oplaadbare accu (29), een besturingseenheid en/of andere elektrische componenten van het aandrijfsysteem behuist.The electric bicycle according to claim 6, wherein the front case (26) houses an electric motor (28), a rechargeable battery (29), a control unit and / or other electrical components of the drive system. 8. Elektrische fiets volgens conclusie 6 of 7, omvattende een kettingwiel (22) dat ligt verzonken in een zijvlak van de voorkast (26) van het onderste framegedeelte en daarmee in hetzelfde vlak ligt.An electric bicycle according to claim 6 or 7, comprising a sprocket (22) that is recessed in a side face of the front case (26) of the lower frame portion and therefore lies in the same plane. 9. Elektrische fiets volgens conclusie 6, 7 of 8, waarbij het onderste framegedeelte (6) een staande achtervork (32) omvat die zich aan beide zijden van het achterwiel (4) uitstrekt tussen een achterste uiteinde van de bovenzijde (11) van het onderste framegedeelte en de naaf van het achterwiel.The electric bicycle according to claim 6, 7 or 8, wherein the lower frame portion (6) comprises a standing rear fork (32) extending on both sides of the rear wheel (4) between a rear end of the upper side (11) of the lower frame section and the rear wheel hub. 10. Elektrische fiets volgens conclusie 9, waarbij de uiteinden van de liggende achtervork (27) en van de staande achtervork (32) op elkaar aansluiten om een open ring te vormen met de voorkast (26) van het onderste framegedeelte (6) .The electric bicycle of claim 9, wherein the ends of the horizontal rear fork (27) and of the vertical rear fork (32) connect to each other to form an open ring with the front case (26) of the lower frame portion (6). 11. Elektrische fiets volgens een van de conclusies 6 - 10, waarbij de voorkast (26) een voorzijde (33) heeft die in lijn is met de onderbuis (16).The electric bicycle of any one of claims 6 to 10, wherein the front case (26) has a front (33) that is aligned with the lower tube (16). 12. Elektrische fiets volgens conclusie 11, waarbij de voorkast (26) een achterzijde (34) heeft die evenwijdig is aan de voorzijde (33).The electric bicycle of claim 11, wherein the front case (26) has a rear side (34) that is parallel to the front side (33). 13. Elektrische fiets volgens een van de conclusies 6 - 12, waarbij de bovenrand (11) van het onderste framegedeelte (6) een voorste gedeelte heeft dat wordt gevormd door de voorkast (26) en een achterste gedeelte (36) dat is verbonden met de staande achtervork (32), waarbij in zijaanzicht van de fiets een opening (37) wordt vrijgelaten tussen het achterwiel (4), de voorkast (26) en de bovenrand van het onderste framegedeelte.An electric bicycle according to any of claims 6-12, wherein the upper edge (11) of the lower frame portion (6) has a front portion formed by the front case (26) and a rear portion (36) connected to the upright rear fork (32), leaving an opening (37) in the side view of the bicycle between the rear wheel (4), the front case (26) and the top edge of the lower frame portion. 14. Elektrische fiets volgens een van de voorgaande conclusies, waarbij de aan elkaar bevestigde boven- en onderranden van respectievelijk het onderste en bovenste framegedeelte (6, 7) visueel op één lijn liggen met de naaf van het voorwiel.An electric bicycle according to any one of the preceding claims, wherein the upper and lower edges of the lower and upper frame portion (6, 7) attached to each other are visually aligned with the front wheel hub. 15. Elektrische fiets volgens een van de voorgaande conclusies, waarbij de aan elkaar bevestigde randen van het onderste en bovenste framegedeelte (6, 7) tenminste één kabeldoorlaat omvatten.An electric bicycle according to any one of the preceding claims, wherein the edges of the lower and upper frame portion (6, 7) attached to each other comprise at least one cable passage. 16. Modulaire set van framegedeeltes voor een elektrische fiets, omvattende een onderste framegedeelte (6) voorzien van een aandrijfsysteem met een elektrisch ondersteunde pedaalaandrijving, en een aantal bovenste framegedeeltes (7) van verschillende vorm of maatvoering, die naar keuze kunnen worden bevestigd aan het onderste framegedeelte.A modular set of frame parts for an electric bicycle, comprising a lower frame part (6) provided with a drive system with an electrically supported pedal drive, and a number of upper frame parts (7) of different shape or dimensions, which can optionally be attached to the lower frame section. 17. Modulair onderste framegedeelte (6) voor een elektrische fiets (1) volgens één van de conclusies 1 - 15.Modular lower frame portion (6) for an electric bicycle (1) according to one of claims 1 to 15. 18. Werkwijze voor het vervaardigen van een elektrische fiets (1) , omvattende de stappen van het vervaardigen van een frame (2) met tenminste twee dragende framemodules, waaronder een onderste framegedeelte (6) voorzien van een elektrisch ondersteunde pedaalaandrijving, en tenminste één bovenste framegedeelte (7), waarbij een onderrand (9) van het bovenste framegedeelte wordt bevestigd aan een bovenrand (11) van het onderste framegedeelte.A method for manufacturing an electric bicycle (1), comprising the steps of manufacturing a frame (2) with at least two supporting frame modules, including a lower frame portion (6) provided with an electrically supported pedal drive, and at least one upper frame portion (7), wherein a lower edge (9) of the upper frame portion is attached to an upper edge (11) of the lower frame portion.
NL2013352A 2014-08-22 2014-08-22 Electric bike. NL2013352B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NL2013352A NL2013352B1 (en) 2014-08-22 2014-08-22 Electric bike.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL2013352A NL2013352B1 (en) 2014-08-22 2014-08-22 Electric bike.

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NL2013352B1 true NL2013352B1 (en) 2016-09-23

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD929268S1 (en) 2019-08-20 2021-08-31 Serial 1 Cycle Company, Llc Bicycle
NL2028722B1 (en) 2021-07-14 2023-01-20 Koninklijke Gazelle N V Bicycle comprising a rear rack
CH718905A1 (en) * 2021-08-18 2023-02-28 Mystromer Ag bike frame.
US11654990B2 (en) 2019-07-16 2023-05-23 Serial 1 Cycle Company, Llc Electric bicycle

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0811771A (en) * 1994-06-28 1996-01-16 Yamaha Motor Co Ltd Bicycle with motor
EP0905014A2 (en) * 1997-09-30 1999-03-31 Honda Giken Kogyo Kabushiki Kaisha Battery storing device of motor-assisted bicycle
JP2002326595A (en) * 2001-05-07 2002-11-12 Yamaha Motor Co Ltd Electric bicycle
EP1582450A2 (en) * 2004-04-02 2005-10-05 Shimano Inc. Bicycle drive unit

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0811771A (en) * 1994-06-28 1996-01-16 Yamaha Motor Co Ltd Bicycle with motor
EP0905014A2 (en) * 1997-09-30 1999-03-31 Honda Giken Kogyo Kabushiki Kaisha Battery storing device of motor-assisted bicycle
JP2002326595A (en) * 2001-05-07 2002-11-12 Yamaha Motor Co Ltd Electric bicycle
EP1582450A2 (en) * 2004-04-02 2005-10-05 Shimano Inc. Bicycle drive unit

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11654990B2 (en) 2019-07-16 2023-05-23 Serial 1 Cycle Company, Llc Electric bicycle
US11787489B2 (en) 2019-07-16 2023-10-17 Serial 1 Cycle Company, Llc Electric bicycle
USD929268S1 (en) 2019-08-20 2021-08-31 Serial 1 Cycle Company, Llc Bicycle
USD996299S1 (en) 2019-08-20 2023-08-22 Serial 1 Cycle Company, Llc Bicycle
NL2028722B1 (en) 2021-07-14 2023-01-20 Koninklijke Gazelle N V Bicycle comprising a rear rack
CH718905A1 (en) * 2021-08-18 2023-02-28 Mystromer Ag bike frame.

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