WO2005066015A1 - Bicyclette et differentiel pour bicyclette - Google Patents

Bicyclette et differentiel pour bicyclette Download PDF

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Publication number
WO2005066015A1
WO2005066015A1 PCT/JP2005/000020 JP2005000020W WO2005066015A1 WO 2005066015 A1 WO2005066015 A1 WO 2005066015A1 JP 2005000020 W JP2005000020 W JP 2005000020W WO 2005066015 A1 WO2005066015 A1 WO 2005066015A1
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WO
WIPO (PCT)
Prior art keywords
gear
wheels
bicycle
driving
rotating shaft
Prior art date
Application number
PCT/JP2005/000020
Other languages
English (en)
Japanese (ja)
Inventor
Kinya Kanou
Original Assignee
Land Walker, 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 Land Walker, Ltd. filed Critical Land Walker, Ltd.
Publication of WO2005066015A1 publication Critical patent/WO2005066015A1/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
    • B62K5/00—Cycles with handlebars, equipped with three or more main road wheels
    • 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
    • B62M9/00—Transmissions characterised by use of an endless chain, belt, or the like

Definitions

  • the present invention relates to a bicycle that can be reduced in size and weight while improving running stability particularly in a corner, can be easily maintained, and cost can be reduced, and a differential for a bicycle used therefor .
  • this three-wheeled bicycle is operated by a handle a and is supported by a front wheel b supported by a front fork and two rear chains supported by a pair of chain stays d and d extending from the frame c to the rear.
  • a chain j is provided between a chain ring g that is supported by the lower part of the frame and rotates by stroking the pedal f, and a sprocket gear i provided on the hub axle h of one rear wheel e. It is bridged.
  • the one rear wheel e can be driven to rotate by driving force applied by pedaling the pedal f (see, for example, Patent Document 1).
  • an axle m having wheels k and k at both ends is divided into left and right parts and rotated by a driving force transmitted from the drive unit by the propeller shaft n.
  • This drive transmission mechanism is widely used in automobiles, and can transmit the driving force of the wheels k, k on both sides.
  • both side gears q, q rotate together.
  • Patent Document 1 Japanese Unexamined Patent Publication No. 2000-335468
  • the drive transmission mechanism is provided with a differential device!: Between the axles ml and m2, which are divided into left and right wheels with wheels k and k at both ends. Since the driving force is transmitted to the device r by the propeller shaft n, there is a limit to the size and weight of the device, and it is necessary to configure the bicycle frame to be considerably large for mounting on the bicycle. As a result, there was a problem that the bicycle itself was large and heavy and lacked practicality.
  • the present invention solves the problems of the bicycle described above, and drives the two wheels by being driven by a rotating shaft and linked to two driving wheels via a transmission mechanism.
  • the objective is to provide a bicycle that can be made compact and lightweight, can be easily maintained, and can reduce costs, and a differential device for a bicycle used therefor.
  • the invention according to claim 1 is characterized in that the main frame has a driving means having a rotating shaft for driving wheels, a steering means, and at least one of two wheels.
  • a bicycle having a front wheel and a rear wheel, the two wheels being driving wheels, wherein the main frame is driven by the rotating shaft and is connected to each of the two driving wheels and a transmission mechanism.
  • a differential device capable of driving the two wheels by being linked to each other, and the differential device is an umbrella-shaped first pivotally supported by a support shaft that is integral with the rotating shaft and extends radially. 1 gear and the first gear on both sides of the gear are opposed to each other and rotate concentrically with the rotating shaft.
  • Each of the second gears is linked to each one of the two driving wheels via the transmission mechanism. It is characterized by that.
  • the invention according to claim 2 is characterized in that the transmission mechanism includes a driving rotator that is mounted concentrically with the second gear, and a driven rotator that is attached to each of the two wheels.
  • the invention according to claim 3 is the bicycle according to claim 2, characterized in that it is the rotating body force procket and the connecting means is a chain.
  • the invention according to claim 4 is characterized in that the two wheels are supported to be swingable up and down independently of each other with respect to the main frame. It is a bicycle described in any one of items 3.
  • the invention according to claim 5 is characterized in that the rotating shaft includes at least one of a crankarm having a pedal and an electric or internal combustion engine type auxiliary power unit.
  • the rotating shaft includes at least one of a crankarm having a pedal and an electric or internal combustion engine type auxiliary power unit.
  • the invention of claim 6 is characterized in that the drive means includes a transmission that can increase or decrease the rotational speed of the rotating shaft.
  • the drive means includes a transmission that can increase or decrease the rotational speed of the rotating shaft.
  • the bicycle differential of the present invention is a bicycle differential having at least one of two wheels, including a front wheel and a rear wheel, and using the two wheels as drive wheels,
  • An umbrella-shaped first gear that is integral with a boss that can be attached to a drive rotation shaft and is pivotally supported by a support shaft that extends radially, and is opposed to the first gear on both sides of the first gear.
  • It consists of an umbrella-shaped second gear that is rotatably supported concentrically with the shaft, and the second gear can be linked to the two driving wheels via a transmission mechanism. It is characterized by.
  • the bicycle of the present invention includes a differential device that is driven by a rotating shaft and that can drive the two wheels by being linked to the two driving wheels via a transmission mechanism.
  • the driving force is transmitted to each of the two driving wheels, and the differential force absorbs the difference in the rotational speed of the inner and outer wheels that occurs when the differential turns, so that stable running performance including corners can be obtained.
  • the differential device includes an umbrella-shaped first gear that is pivotally supported on a support shaft that is integral with the rotation shaft, and an umbrella-shape that is meshed with the first gear and pivotally concentric with the rotation shaft.
  • the second gear is provided to drive the two wheels by being linked to the two driving wheels via a transmission mechanism.
  • the driving force is transmitted to each of the two driving wheels, and the differential force absorbs the difference in the rotational speed of the inner and outer wheels that occurs when the differential turns, so that stable running performance including corners can be obtained.
  • the differential device includes an umbrella-shaped first gear that is pivotally supported on a support shaft that is integral with the rotation shaft
  • each 1 of the second gear is linked to each 1 of the two driving wheels via a transmission mechanism
  • the basic driving mechanism of the bicycle itself and the above-mentioned differential device are combined to minimize the driving force. It can be composed of as many parts as necessary, and the structure becomes simple. As a result, it is possible to reduce the size and weight, and it is easy to design a compact as a bicycle. Therefore, mechanical troubles can be reduced, maintenance can be achieved, and cost can be reduced.
  • Main parts such as the driving means and the differential are arranged around the rotation axis of the main frame.
  • the transmission mechanism includes a driving rotator that is concentrically attached to the second gear, and a driven rotator that is attached to each of the two wheels. And a connecting means that connects between them, the conduction mechanism can be easily configured. Further, as in the invention described in claim 3 of the claim, when the rotating force is a procket and the connecting means is a chain, the drive conduction to the two wheels is more reliable.
  • the drive means is provided with a transmission that can increase or decrease the rotational speed of the rotating shaft, it is possible to reduce a rider's load that increases during climbing and the like. Enables comfortable high-speed driving on the road.
  • the bicycle differential of the present invention includes an umbrella-shaped first gear that is pivotally supported by a support shaft that is integral with a boss that can be attached to a rotating shaft, and the first gear that meshes with the first gear. It consists of an umbrella-shaped second gear that is pivotally supported on the same axis as the dynamic shaft, and the second gear can be linked via two drive wheels and a transmission mechanism.
  • ⁇ 1 A perspective view illustrating an embodiment of the present invention.
  • ⁇ 2 An enlarged perspective view of the main part.
  • FIG. 4 A-A cross-sectional view.
  • FIG. 5 is a front view of the front frame.
  • FIG. 7 is a plan view for explaining the traveling state of the bicycle 1.
  • FIG. 8 is a schematic front view illustrating another embodiment.
  • FIG. 9 is a schematic plan view illustrating still another embodiment.
  • FIG. 10 A perspective view illustrating still another embodiment.
  • FIG. 11 is a cross-sectional view of a main part illustrating still another embodiment.
  • FIG. 12 is a side view illustrating still another embodiment.
  • FIG. 13 is a plan view thereof.
  • FIG. 14 is an enlarged view of the main part.
  • FIG. 15 is a plan view illustrating a conventional example.
  • FIG. 16 is a schematic view illustrating another conventional example.
  • a bicycle 1 according to the present invention includes a main frame F, front wheels 6F, rear wheels 6R, steering means 5, driving means 4, and differential 8.
  • the main frame F includes a top tube 21 extending in the front-rear direction, a saddle pipe 22 provided integrally with a rear end portion of the top tube 21 and a saddle 39 attached to an upper end portion thereof, and the saddle pipe 22
  • a structure including a pair of left and right bottom frames 23 and 23 depending from the lower end of the frame is illustrated.
  • the bicycle 1 of the present embodiment is an example in which the front wheel 6F and the rear wheel 6R are both composed of two wheels, and the rear wheel 6R is used as a driving wheel.
  • either the front wheel 6F or the rear wheel 6R may be configured as one wheel, and at that time, the other two wheels are configured as driving wheels.
  • Each wheel is configured by connecting a hub and a rim with a plurality of spokes (not shown) radially attached to one end of the wheel, and a tire is attached to the rim.
  • the front wheel 6F is supported by the steering means 5 as shown in FIG. Steering hand of this form
  • the stage 5 is illustrated as including a handle 24 and a front frame 25.
  • the handle 24 has a substantially horizontal hook shape and has grips at both ends.
  • the front frame 25 includes a steering shaft 26, and a front fork member 27 provided at the lower portion of the steering shaft 26 so as to be rotatable integrally with the steering shaft 26. It is comprised including.
  • the front fork member 27 is attached to the lower end of the steering shaft 26 and extends downward, and the front wheel that is guided by the guide portion 28 and moves up and down to pivotally support the front wheel 6F.
  • An example is shown that includes a support portion 29 and an elastic member 30 that biases the front wheel support portion 29 downward.
  • the guide portion 28 of the present embodiment includes a guide shaft 28a parallel to the front and rear between an upper support plate 31A and a lower lower holding plate 31B formed at the lower end of the steering shaft 26.
  • 28b is configured as a frame that is fixed in two rows.
  • the front wheel support portion 29 includes left and right slide bodies 29A provided with vertical guide holes through which the guide shafts 28a, 28b are inserted.
  • the slide body 29A includes a cantilevered front wheel support shaft 33 that rotatably supports the front wheel 6F and the disk 32a integrally formed with the front wheel 6F, and an operating lever (not shown) provided on the handle.
  • a braking tool 32b that brakes the disk 32a by being actuated.
  • the disc 32a and the brake 32b constitute a braking means 32.
  • the elastic member 30 also has a coil panel force, is externally inserted into the left and right guide shafts 28b, 28b, and is disposed between the upper support plate 31A and the slide body 29A.
  • the left and right slide bodies 29A are separately urged downward to form an independent suspension.
  • the left and right front wheels 6F, 6F can be lifted individually by staking the panel force in the event of a collision with a running road convex portion, a shoulder shoulder step portion, etc., so that the impact can be mitigated and falling can be prevented.
  • cornering it is possible to easily take a lean attitude corresponding to the radius and passing speed of the curve, which is preferable in that the curve can be smoothly and smoothly passed without excessive deceleration.
  • the steering shaft 26 has a central portion of the handle 24 fixed to an upper end portion thereof, and rotates to a head pipe 34 formed integrally with a front end portion of the top tube 21 of the main frame F. Inserted as possible. Accordingly, the front frame 25 can steer the bicycle 1 by rotating the handle 24 to operate the front wheel 6F.
  • the left and right rear wheels 6R, 6R have a hub 6h in the center extending rearward from the lower ends of the left and right bottom frames 23, 23. It is pivoted at the end.
  • the chain stay 35 is pivotally supported at a pivot point 36a by a receiving portion 36 integrally provided on the rear side of the lower end portion of the bottom frame 23.
  • the left and right rear wheels 6R, 6R are supported on the rear side of the main frame F so as to be independently swingable up and down, as shown in FIG.
  • the upper and lower ends of the elastic body 37 with a built-in coil panel are pivotally attached to the upper part of the bottom frame 23 and the rear part of the chain stay 35, respectively, so that the rear side of the chain stay 35 is attached downward by the elastic body 37.
  • An independent suspension suspension is constructed.
  • the left and right rear wheels 6R and 6R supported by this independent suspension can be lifted by piled up on the panel force of the elastic body 37 according to the upward reaction force that each receives also the roadway force.
  • Individual lifts corresponding to can reduce the impact and reduce the tilt of the vehicle when driving on rough roads and maintain stable driving. And even during cornering, the rider can easily take the optimum lean posture according to the radius and passing speed of the curve, so it can safely pass the curve without slowing down much.
  • all four wheels of the front wheels 6F and 6F, the rear wheels 6R and 6R are supported by the independent suspension type suspension, so that the cushioning performance is further improved and the safety is improved. This is preferable in that a specified smooth running can be obtained.
  • the drive means 4 includes a rotary shaft 3 supported by a ball bearing between the lower ends of the bottom frames 23 and 23, and the rotary shaft.
  • the left and right crank arms 18 and 18 extend from both ends of the shaft 3 at right angles to the rotating shaft 3 and in opposite directions, and a pedal 17 attached to the tip of the crank arm 18 is configured.
  • the driving force generated in the rotating shaft 3 when the rider pedals the pedal 17 is transmitted to the rear wheel 6R which is a driving wheel via the differential device 8 and the transmission mechanism 7.
  • the differential device 8 is meshed with an umbrella-shaped first gear 10 and the first gear 10 on both sides thereof. And an umbrella-shaped second gear 11 facing each other.
  • the first gear 10 is pivotally supported by three support shafts 9 extending radially from bosses 20 provided on the rotation shaft 3.
  • the boss 20 is attached to the rotary shaft 3 so as not to rotate relative to the rotary shaft 3 by a key (not shown) fitted in the key groove 40.
  • the support shaft 9 of the present embodiment is exemplified by a bolt 9a having threaded portions at both ends, and is screwed into the boss 20 in a screw hole spaced on the peripheral surface.
  • the first gear 10 is made of an oil-impregnated material such as sintered metal, oil-impregnated resin (polyacetal resin, polyamide resin, polyester resin), and is pivotally supported by the bolt 9a through the bearing bush 41. Te! A washer 9b and a nut 9c are screwed onto the tip of the bolt 9a.
  • three first gears 10 pivotally supported by three support shafts 9 that are radially spaced from the rotation shaft 3 at equal intervals are provided between the second gears 11, 11.
  • the first gear 10 has a number of teeth of, for example, about 12-25, preferably 15-20, 18 in this embodiment, and a pitch circle diameter of about 15-60mm, preferably about 20-50mm. Then we use a 4 Omm force gear.
  • a pair of the second gears 11 are arranged concentrically with the rotating shaft 3, and a boss portion thereof is rotatably supported on the rotating shaft 3 via a ball bearing bearing 42, and
  • the first gear 10 faces the both sides of the first gear 10 and faces the first gear 10.
  • the second gear 11 has a number of teeth of, for example, about 24-60, preferably 30-50. Is a force gear with a pitch circle diameter of about 40-160 mm, preferably about 80-125 mm, and 100 mm in this embodiment.
  • the transmission mechanism 7 includes a driving rotator 12 attached concentrically with the second gear 11, a driven rotator 13 attached to the rear wheel 6R, and both rotators 12, 13. Powered with 14 connecting steps.
  • the driving rotating bodies 12 and 12 respectively attached to both the second gears 11 and 11 and the driven rotating bodies 13 respectively attached to the left and right rear wheels 6R and 6R,
  • the driving force of the second gears 11 and 11 is individually transmitted to the left and right rear wheels 6R and 6R via 13 and connecting means 14 and 14 respectively bridged between them.
  • the drive rotator 12 of the present embodiment is formed by using a drive sprocket 15A to constitute a chain ring.
  • the drive sprocket 15A is fixed to the outer surfaces of the left and right second gears 11 and 11 with bolts 44.
  • the driven rotating body 13 of the present embodiment is similarly formed using the driven sprocket 15B, and is fixed to the hub 6h inside the rear wheel 6R and rotates integrally with the rear wheel 6R.
  • the coupling means 14 of this embodiment is formed by an annular chain 16 that meshes with both the sprockets 15A and 15B.
  • the transmission mechanism 7 of the present embodiment connects the driving and driven rotating bodies 12 and 13 using the sprocket 15 with the connecting means 14 including the chain 16 matching the driving rotating bodies 12 and 13. This is preferable in that the driving force can be reliably transmitted to the wheel.
  • the transmission mechanism. 7 is transmitted to each of the rear wheels 6R and 6R, which are driving wheels, and the rotational speed transmitted to the left and right driving wheels by the differential device 8 depends on the load. Can change. Therefore, as shown in Fig. 7, the difference in rotational speed between the left and right drive wheels caused by the difference in turning radius (R1-R2) during cornering is absorbed, and both wheels can run without slipping. To maintain. In addition, since energy loss due to slip is reduced, comfortable driving is possible.
  • the differential device 8 is engaged with the first gear 10 pivotally supported by a support shaft 9 formed integrally with the rotating shaft 3 of the drive means 4 and the first gear 10 is engaged with the first gear 10.
  • the second gear 11 is pivotally supported on the rotating shaft 3.
  • the differential 8 has the driving means 4 that is the basic mechanism of the bicycle itself. Since they are configured in combination, the number of parts can be kept to the minimum necessary and the structure becomes simple. Therefore, the overall size can be reduced and the weight can be reduced. As a result, it is possible to design a bicycle 1 that is compact and excellent in operability. In addition, the frequency of failures will be reduced, maintenance efforts will be saved and costs will be reduced.
  • the mechanism in which the differential device r is provided on the axle m between the wheels k is connected by a universal joint shaft or the like between the differential device r and the wheels k and k.
  • the bicycle 1 according to this embodiment is configured so that the right and left rear wheels supported by the differential mechanism 8 configured in combination with the driving means 4 through the transmission mechanism 7 including the sprocket 15 and the chain 16 are movable up and down. Since the driving force is transmitted to 6R and 6R, the rear wheels 6R and 6R can be arranged narrowly, and the vertical movement of the rear wheels 6R and 6R can be sufficiently secured.
  • the front end of the chain stay 35 is pivotally supported at the pivot point 36a near the bottom end of the bottom frame 23 as described above. Therefore, as shown in FIG. 3, even if the rear end of the chain stage 35 moves up and down and the rear wheels 6R and 6R swing up and down, the chain 16 is used for driving and driven. Since the distance between the rotating bodies 12 and 13 hardly changes, the chain tension is kept constant. As a result, a tension adjusting device for preventing the chain 16 from loosening is unnecessary, the structure is simplified, and the weight and cost can be reduced.
  • the rotating body 12 for driving and driven can be driven even if the rear wheel 6R swings up and down.
  • the distance between 13 can be made unchanged.
  • the transmission mechanism 7 can also connect the driving and driven rotators 12 and 13 formed of a belt wheel with a connecting means 14 made of a belt. Furthermore, a conduction mechanism 7 formed by combining a universal joint mechanism and a propeller shaft can also be used.
  • the bicycle 1 of the present embodiment is formed with a protective cover 43 that covers the differential device 8.
  • the protective cover 43 has a horizontal cylindrical shape, is sandwiched between the washer 9b and the nut 9c of the bolt 9a, covers the center portion of the rotating shaft 3 of the differential device 8 and the driving means 4, and rotates these. Prevents intrusion of dust, rainwater, etc. into the part and is filled with lubricating oil etc. The lubricant is sealed.
  • the rotating part constituting the main part is arranged around the rotating shaft of the main frame. For this reason, it is possible to easily and reliably perform dustproofing, dripproofing and sealing of the internal lubricant to protect them, and the reliability can be maintained for a long time.
  • the saddle 39, the handle 24, and the driving means 4 can be set high to set the center of gravity high.
  • the pedal 17 of the driving means 4 has a high height H due to the road surface force at the lowest point of rotational movement. Driving can be secured, and it can be suitably used especially for mountain biking.
  • the embodiment exemplifies a four-wheel bicycle 1 in which the front wheel 6F and the rear wheel 6R are both composed of two wheels. As shown in FIG. 9, it can also be configured as a three-wheeled bicycle having one front wheel 6F supported by the steering means 5 and two rear wheels 6R formed as driving wheels. .
  • FIG. 10 illustrates another embodiment.
  • the front wheel 6F is formed by two driving wheels
  • the rear wheel 6R is formed by one wheel having a steering function.
  • the front wheel 6F is pivotally supported by a front fork member 27 fixed to the front end portion of the main frame F. Then, the driving force applied by the driving means 4 having the pedal 17 is transmitted to the front wheel 6F via the differential device 8 and the transmission mechanism 7, and the left and right front wheels 6F, 6F are driven.
  • the rear wheel 6R is pivotally supported by a rear fork 45 that is rotatably supported at a rear end portion of the main frame F. After this, the fork 45 rotates in conjunction with the operation of the needle 24 via an interlocking means 46 such as a chain installed inside the main frame, whereby the rear wheel 6R is steered.
  • a steering means 5 is formed by the handle 24, the interlocking means 46, and the rear fork 45.
  • the bicycle of this embodiment allows the front wheel 6F to be driven to pull the entire vehicle body and perform smooth running with little slip, and is steered by the rear wheel 6R of one wheel. ⁇ Driving is possible, making it easier to drive on narrow roads.
  • FIG. 11 illustrates yet another embodiment.
  • the driving means 4 of this embodiment includes a crank arm 18 having pedals 17 fixed to both ends of the rotating shaft 3, an electric auxiliary power unit 19 having a motor M force driven by a storage battery (not shown), and It is comprised including.
  • the motor M is fixed to the main frame F by a bracket (not shown), and the rotational force is transmitted to the rotating shaft 3 by the interlocking mechanism 47.
  • the interlocking mechanism 47 is bridged between a motor gear 47a fixed to the rotation shaft of the motor M, a shaft gear 47b fixed concentrically to the rotating shaft 3, and the motor gear 47a and the shaft gear 47b. And an annular interlocking chain 47c.
  • the motor gear 47a and the shaft gear 47b are each formed integrally with a pair of gears, and the pair of interlocking chains 47c are bridged between the gears.
  • the shaft gear 47b is fixed to the tip end portion of the support shaft 9 that pivotally supports the first gear 10 of the differential gear 8, and rotates together with the first gear 10.
  • the auxiliary power unit 19 when the auxiliary power unit 19 is operated when the load is large, such as an uphill or a headwind, the driving force of the rowing by the pedal 17 can be supplemented, and the vehicle can run without a decrease in speed. It is possible to maintain the line and at the same time reduce the burden on the rider and realize a comfortable and comfortable driving.
  • the auxiliary power unit 19 may be an electric power unit such as a motor M, or an internal combustion engine type auxiliary power unit 19 such as a gasoline engine. Furthermore, the bicycle of the present invention includes a configuration in which the rotation shaft 3 is driven only by the auxiliary power unit 19 without providing the crank arm 18 having the pedal 17 on the rotation shaft 3.
  • FIGS 12 and 13 illustrate yet another embodiment.
  • the present embodiment is exemplified by a recumbent type bicycle in which the pedal is lined up in a supine posture. Therefore, the saddle 39 of this embodiment is attached to the rear end portion of the top tube 21 constituting the main frame F via the saddle bracket 48 and is disposed at a relatively low level.
  • a backrest 49 is attached to the saddle bracket 48 in order to support the upper body of the rider who is tilted backward on the saddle 39.
  • the drive means 4 of the present embodiment includes a crankshaft 54 pivotally supported on the lower side of the top tube 21, a front chainring 50 that rotates integrally with the crankshaft 54, and the top tube 21.
  • the rotating shaft 3 supported at the rear end of the rotating shaft 3 and one end of the rotating shaft 3
  • a cassette sprocket 51 that is fixed and rotates integrally with the rotating shaft 3, an annular front chain 52 that meshes with both the cassette sprocket 51 and the front chain ring 50, and a cassette sprocket 51 of the front chain 52.
  • a configuration including a derailleur 53 capable of adjusting the rotational speed of the rotary shaft 3 by changing the position of the shaft 3 is illustrated.
  • the cassette sprocket 51 is formed by concentrating a plurality of sprockets having different numbers of teeth.
  • the crankshaft 54 has a pair of crank arms 56, 56 each having a pedal 55 provided at the tip thereof.
  • the rotational force of the front chain ring 50 generated by the rider stroking the pedal 55 is transmitted to the rotary shaft 3 via the front chain 52 and the cassette sprocket 51.
  • the derailleur 53 is operated by a speed change lever (not shown)
  • the number of stages (sprocket type) of the cassette sprocket 51 with which the front chain 52 is engaged is switched.
  • the rotation ratio between the crankshaft 54 and the rotating shaft 3 can be changed. Therefore, for example, when the driving load increases, such as uphill roads and headwinds, the gear ratio is reduced to reduce the load on the pedal 55, and conversely the gear ratio is increased to increase the speed. This makes it possible to drive comfortably.
  • a transmission S is formed by the cassette sprocket 51, the derailleur 53, and the transmission lever.
  • the transmission S can also be equipped with an internal transmission instead of the exterior type.
  • the driving force of the rotating shaft 3 whose torque is adjusted by the transmission S is applied to the rear wheels 6R and 6R via the differential device 8 and the transmission mechanism 7 as in the above embodiment. Rotate.
  • driving according to the balance of the left and right loads such as turning and road surface unevenness, is transmitted to the left and right rear wheels 6R, 6R to reduce energy loss, increase / decrease load, or rider fatigue
  • the pedal weight can be increased or decreased according to the degree, so it is preferable in that it can continue a light run.
  • the bicycle differential of the present invention includes a front wheel 6F and a rear wheel 6R, at least one of which is a two-wheel drive, and the two-wheel drive is also driven. Used for bicycles configured as industrial wheels.
  • the umbrella-shaped first gear 10 pivotally supported by the support shaft 9 provided on the boss 20 and the left and right ones which are engaged with the first gear 10 on both sides and face each other.
  • a pair of umbrella-shaped second gears 11 The boss 20 is rotated for driving. It is attached to shaft 3 so that it cannot rotate relative to it.
  • the first gear 10 is pivotally supported by three support shafts 9 extending radially from a boss 20 provided on the rotation shaft 3.
  • the support shaft 9 is formed by a bolt 9 a having screw portions at both ends, and is screwed into a screw hole provided around the boss 20.
  • the first gear 10 is pivotally supported by a bolt 9a through a sliding bearing 41 using an oil-impregnated material such as sintered metal or oil-impregnated grease, and the tip of the bolt 9a is screwed with a washer 9b and a nut 9c. Is done.
  • the first gear 10 may be supported by the bolt 9a through a rotary bearing such as a needle bearing.
  • the differential device 8 of the present embodiment includes three first gears 10 pivotally supported by three support shafts 9 that are radially spaced from the rotation shaft 3.
  • a pair of first gears 10 can be arranged by providing two supporting shafts 9 extending in the opposite direction from the rotating shaft 3, or four or more first gears 10 are arranged radially. That ’s it.
  • a pair of second gears 11 face each other on both sides of the first gear 10 and mesh with the first gear 10.
  • the second gear 11 is formed such that its boss portion can be pivotally supported on the rotating shaft 3 via a ball bearing 42, and each of the two gears 11 is connected to the two driving wheels. It is formed so that it can be linked via the conduction mechanism 7. Note that the second gear 11 may be pivotally supported via a needle bearing or a sliding bearing.
  • the boss 20 When the boss 20 is attached to the bicycle, the boss 20 is fixed to the rotating shaft 3 of the driving means 4 of the bicycle, and the second gear 11 is pivotally supported by the rotating shaft 3.
  • the differential mechanism since the differential mechanism is configured in combination with the driving means 4 which is the basic mechanism of the bicycle itself, the number of parts can be kept to the minimum necessary and the structure becomes simple. Therefore, it is possible to reduce the size and weight, and as a result, it is possible to design a bicycle that is compact and excellent in operability. In addition, the frequency of failures is reduced, maintenance work is saved, and costs are reduced.
  • the bicycle differential device can be configured as a compact differential device with a shift function by integrally incorporating an internal bicycle transmission.

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  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
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  • Automatic Cycles, And Cycles In General (AREA)
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Abstract

La présente invention concerne une bicyclette comprenant un cadre principal, un moyen d'entraînement doté d'un arbre pivot qui entraîne une roue, un moyen de direction ainsi qu'une roue avant et une roue arrière qui sont toutes deux formées de deux roues qui sont les roues motrices. Le cadre principal comprend un différentiel qui entraîne, par l'intermédiaire d'un mécanisme de transmission, chacune des roues à deux roues de manière cohérente. Le différentiel est constitué d'un premier engrenage du type parapluie qui est supporté par un axe de support s'étendant radialement entre l'arbre pivot et les deuxièmes engrenages du type parapluie qui sont en prise, sur les deux côtés du premier engrenage, ledit premier engrenage étant supporté par l'arbre pivot. Chacun des deuxièmes engrenages est destiné à coopérer avec chacune des roues motrices des roues à deux roues. Cette invention concerne également un différentiel qui est destiné à une bicyclette et qui comprend un premier engrenage du type parapluie qui est supporté par un axe de support s'étendant radialement depuis un tasseau pouvant être installé sur un arbre pivot afin d'assurer l'entraînement et de deuxièmes engrenages du type parapluie qui sont en prise, sur les deux côtés du premier engrenage, avec ledit premier engrenage, et qui sont supportés par l'arbre pivot. Les deuxièmes engrenages peuvent coopérer avec les roues motrices par l'intermédiaire de mécanismes de transmission.
PCT/JP2005/000020 2004-01-06 2005-01-05 Bicyclette et differentiel pour bicyclette WO2005066015A1 (fr)

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Application Number Priority Date Filing Date Title
JP2004-001278 2004-01-06
JP2004001278 2004-01-06
JP2004-380261 2004-12-28
JP2004380261A JP2005219728A (ja) 2004-01-06 2004-12-28 自転車および自転車用の差動装置

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WO2005066015A1 true WO2005066015A1 (fr) 2005-07-21

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JP2009286155A (ja) * 2008-05-27 2009-12-10 Takeshi Ikeda 三輪自転車
DE102009002989A1 (de) * 2009-05-11 2010-12-02 Vip Innovation Gmbh Dreirad
JP2013067228A (ja) * 2011-09-21 2013-04-18 Yukihiro Kobayashi ４輪自転車の後輪駆動緩衝装置
ITUB20160588A1 (it) * 2016-02-09 2017-08-09 Bromas Log S R L Gruppo mono ammortizzatore a doppio braccio per due ruote di un velocipede
WO2017152844A1 (fr) * 2016-03-11 2017-09-14 Yangding (Tianjin) Commercial Trading Co., Ltd. Châssis d'un véhicule à roues avant
TWI637878B (zh) * 2017-04-12 2018-10-11 羅崑樟 Bicycle continuous transmission
JP2019513611A (ja) * 2016-04-04 2019-05-30 キューシーエス クオリティ コンサルト サービス ゲゼルシャフト・ミット・ベシュレンクター・ハフトゥング 電気モータ駆動の自転車のための駆動装置
FR3109137A1 (fr) * 2020-04-14 2021-10-15 Paul Poggi Vélo à deux roues motrices indépendantes
CN114896828A (zh) * 2022-07-14 2022-08-12 合肥磐石智能科技股份有限公司 基于大弯曲度固定轨道的行车电子差速算法及演示装置
IT202100020297A1 (it) * 2021-07-29 2023-01-29 Interactive Fully Electrical Vehicles S R L Veicolo del tipo cavalcabile
FR3136740A1 (fr) 2022-06-20 2023-12-22 Blackbike Ltd Vélo à deux roues motrices indépendantes à écartement variable

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JP4416620B2 (ja) * 2004-10-05 2010-02-17 パナソニック株式会社 電動自転車
JP4866324B2 (ja) * 2007-09-27 2012-02-01 ランドウォーカー株式会社 後輪駆動四輪自転車
WO2009066363A1 (fr) * 2007-11-19 2009-05-28 Land Walker, Ltd. Bicyclette équipée de deux roues avant
JP5128257B2 (ja) * 2007-12-10 2013-01-23 株式会社カワムラサイクル 駆動輪兼操舵輪を備えた自転車
JP5576855B2 (ja) * 2009-03-13 2014-08-20 ヤマハモーターエンジニアリング株式会社 電動車両
KR100972987B1 (ko) * 2010-02-22 2010-07-29 에스에스오토엔지니어링(주) 자전거용 개방형 바텀 브라켓
JP2012101577A (ja) * 2010-11-05 2012-05-31 Jtekt Corp 車両の操舵装置
JP2012101576A (ja) * 2010-11-05 2012-05-31 Jtekt Corp 車両の操舵装置
CN104743053A (zh) * 2015-03-19 2015-07-01 江苏双环齿轮有限公司 双驱单车的差速驱动器
PL3566940T3 (pl) 2018-05-07 2024-01-03 Trek Bicycle Corporation Zespół baterii rowerowej
JP2020050043A (ja) * 2018-09-25 2020-04-02 パナソニックＩｐマネジメント株式会社 三輪自転車
EP3867135B1 (fr) * 2018-10-18 2023-11-15 PIAGGIO & C. S.p.A. Véhicule automobile à selle à deux roues arrière
KR102170239B1 (ko) * 2019-04-25 2020-10-26 서울대학교산학협력단 모터사이클 휠 분리장치
JP2021187418A (ja) * 2020-06-04 2021-12-13 パナソニックＩｐマネジメント株式会社 モーターユニット及び電動自転車

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Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009286155A (ja) * 2008-05-27 2009-12-10 Takeshi Ikeda 三輪自転車
DE102009002989A1 (de) * 2009-05-11 2010-12-02 Vip Innovation Gmbh Dreirad
JP2013067228A (ja) * 2011-09-21 2013-04-18 Yukihiro Kobayashi ４輪自転車の後輪駆動緩衝装置
ITUB20160588A1 (it) * 2016-02-09 2017-08-09 Bromas Log S R L Gruppo mono ammortizzatore a doppio braccio per due ruote di un velocipede
WO2017137923A1 (fr) * 2016-02-09 2017-08-17 Bromas-Log S.R.L. Ensemble d'absorbeur de choc unique à double bras pour une paire de roues d'un vélocipède
WO2017152844A1 (fr) * 2016-03-11 2017-09-14 Yangding (Tianjin) Commercial Trading Co., Ltd. Châssis d'un véhicule à roues avant
US10703433B2 (en) 2016-04-04 2020-07-07 QCS Quality Consult Service GmbH Drive device for a bicycle driven by an electric motor
JP2019513611A (ja) * 2016-04-04 2019-05-30 キューシーエス クオリティ コンサルト サービス ゲゼルシャフト・ミット・ベシュレンクター・ハフトゥング 電気モータ駆動の自転車のための駆動装置
TWI637878B (zh) * 2017-04-12 2018-10-11 羅崑樟 Bicycle continuous transmission
FR3109137A1 (fr) * 2020-04-14 2021-10-15 Paul Poggi Vélo à deux roues motrices indépendantes
WO2021209515A1 (fr) 2020-04-14 2021-10-21 Paul Poggi Vélo à deux roues motrices indépendantes
IT202100020297A1 (it) * 2021-07-29 2023-01-29 Interactive Fully Electrical Vehicles S R L Veicolo del tipo cavalcabile
WO2023007331A3 (fr) * 2021-07-29 2023-03-09 Interactive Fully Electrical Vehicles S.R.L. Véhicule du type à conducteur porté
FR3136740A1 (fr) 2022-06-20 2023-12-22 Blackbike Ltd Vélo à deux roues motrices indépendantes à écartement variable
CN114896828A (zh) * 2022-07-14 2022-08-12 合肥磐石智能科技股份有限公司 基于大弯曲度固定轨道的行车电子差速算法及演示装置

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