JP2006142863A - Three-wheel type cycle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To set a tread between left and right rear wheels to the maximum in a vehicle body shell having limited lateral width in a three-wheel type cycle covered by the vehicle body shell. <P>SOLUTION: Rear ends of a pair of left and right swing arms 90 vertically pivotably supported to a vehicle body frame F through a pivot shaft 78 are integrally bonded to each other through a gate type cross pipe 92 to constitute a swing arm assembly 14. One rear wheel 10r arranged adjacent to the outer side and closely contacted with an inner side surface of the vehicle body shell S is rotatably and pivotally supported on a rear end of one swing arm 90. The other rear wheel 10r arranged adjacent to the outer side of the other swing arm 90 and closely contacted with the inner side surface of the vehicle body shell S is bonded to a rotation axle 47 rotatably supported on a rear end of the other swing arm 90. A power generation/electric motor 59 in which a rotor shaft 59a is connected to the rotation axle 47 is mounted to the cross pipe 92 and is arranged at the inner side of the gate shape. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention supports a saddle disposed in front of a pair of left and right rear wheels and below the upper surface of these rear wheels, and a crankshaft with a pedal disposed in front of the saddle on a vehicle body frame. A three-wheeled bicycle, in which a rotor shaft of a generator / motor is connected to a transmission device that connects between the rear wheels, and a vehicle body shell that covers a front wheel, a rear wheel, and a saddle to define a cabin for accommodating a rider is attached to the vehicle body frame. Regarding improvements.

Such a three-wheeled bicycle is already known as disclosed in Patent Document 1 below.
JP 2004-276755 A

  In such a three-wheeled bicycle, in order to minimize the air resistance during running, it is desirable to reduce the projected area in the front-rear direction while forming the body shell in a streamline shape. However, if the lateral width of the vehicle body shell is set to be small in order to reduce the projected area in the front-rear direction of the vehicle body shell, it becomes difficult to set the tread between the left and right rear wheels sufficiently large. In particular, as disclosed in Patent Document 1, when each rear wheel is supported by a rear fork having a pair of legs on both sides thereof, the rear wheel is obstructed by the outer legs of the rear fork. Since it cannot be brought close to the inner surface of the body shell, it is more difficult to set a large tread between the rear wheels.

  The present invention has been made in view of such circumstances, and makes it possible to set the tread between the left and right rear wheels to the maximum within the limited body width shell and between the left and right rear wheels. An object of the present invention is to provide the above-mentioned three-wheeled bicycle that makes it possible to install a power generator / motor using space effectively.

  In order to achieve the above object, the present invention includes a saddle disposed in front of a pair of left and right rear wheels and below the upper surface of the rear wheels, and a crankshaft with a pedal disposed in front of the saddle. A vehicle body shell defining a cabin for accommodating a rider is formed by connecting a rotor shaft of a generator / motor to a transmission device that is supported by a vehicle body frame and connects between a crankshaft and a rear wheel, covering a front wheel, a rear wheel, and a saddle. In a three-wheeled bicycle attached to a frame, a swing arm is formed by integrally connecting the rear ends of a pair of left and right swing arms supported by a body frame via a pivot shaft via a gate-shaped cross pipe. In addition to constituting the assembly, a damper that cushions the swinging of the swing arm assembly between the swing arm assembly and the vehicle body frame is interposed, and one swing arm A rotating axle connected to the transmission device at the rear end of the other swing arm is rotatably supported at one end of the rear wheel adjacent to the inner surface of the vehicle body shell. The rotary axle is rotatably supported, and the other rear wheel, which is disposed adjacent to the outside of the other swing arm and close to the inner surface of the vehicle body shell, is coupled to the rotary axle, and the rotor axle is connected to the rotary axle. The first feature is that the generator / motor is attached to the cross pipe and disposed inside the portal.

  In addition to the first feature, the present invention provides a pair of left and right pivots spaced apart from each other, and an input shaft and an output shaft of a transmission supported by a vehicle body frame between the pivots. The second feature is that they are arranged coaxially, and the input shaft is connected to the crankshaft and the output shaft is connected to the rotor shaft via a chain transmission mechanism.

  Furthermore, in addition to the first or second feature, the present invention further includes a clutch that can be arbitrarily connected and disconnected between the rotor shaft and the rotating axle, and the clutch is also attached to the cross pipe. In addition, the third feature is that it is arranged inside the gate shape.

  The cross pipe corresponds to a rear cross pipe 92 in an embodiment to be described later of the present invention.

  According to the first feature of the present invention, the left and right rear wheels that are cantilevered on the outside of the left and right swing arms are brought close to the left and right inner surfaces of the vehicle body shell without being interfered by other objects. Therefore, the tread between the two rear wheels can be maximized within the limited width of the body shell, which can contribute to the improvement of the stability of the three-wheeled bicycle. Moreover, the swing arm assembly formed by integrally connecting the rear ends of the left and right swing arms with a cross pipe is connected to the vehicle body frame via a pivot so as to be swingable up and down. Since a damper is interposed between the swing arm assembly and the swinging motion of the swing arm assembly is buffered by the damper, the rider can have a good ride comfort.

  In addition, the cross pipe is formed in a portal shape, and a generator / motor that connects the rotor shaft to the rotating axle is attached to the cross pipe, and is arranged inside the portal shape so that the swing arm assembly and the left and right rear A compact drive unit can be constituted by the wheels and the generator / motor. In addition, the drive unit can be assembled separately from the vehicle body frame side, and can be connected to the vehicle body frame via the pivot after the assembly, so that the assembly efficiency of the three-wheeled bicycle can be increased.

  At that time, by arranging the generator / motor inside the gate of the cross pipe, interference between the generator / motor and the cross pipe can be avoided, which can contribute to the downsizing of the drive unit.

  Further, according to the second feature of the present invention, the input and output shafts of the transmission are arranged coaxially between the left and right pivots of the swing arm assembly, so that even when the swing arm assembly swings around the pivot axis. Since the chain of the chain transmission mechanism connected to the input and output shafts of the transmission does not expand and contract, the durability of them can be improved.

  Further, according to the third feature of the present invention, when the clutch is turned off, the generator / motor is operated as a generator by driving the generator / motor from the pedal while maintaining the stopped state. The rider can increase the physical strength of the rider. Therefore, this bicycle can be used as a stationary training device for improving physical fitness, regardless of the installation location such as a garage or a garden at home. In addition, when the clutch is turned on, the driving force of the pedal can be assisted by causing the generator / motor to function as an electric motor when the bicycle is driven by the rider's pedal drive.

  Moreover, since the clutch is also supported by the cross pipe on the inner side of the gate shape like the generator / motor, it can be compactly incorporated into the drive unit.

  Embodiments of the present invention will be described below based on preferred embodiments of the present invention shown in the drawings.

  1 is a side view of a three-wheeled bicycle according to an embodiment of the present invention, FIG. 2 is a plan view of the bicycle, FIG. 3 is an enlarged front view of the bicycle, FIG. 4 is an enlarged rear view of the bicycle, and FIG. FIG. 6 is a plan view showing the same bicycle with the body shell removed, FIG. 6 is a sectional view taken along line 7-7 in FIG. 1, and FIG. 9 is an enlarged cross-sectional view taken along line 8-8, FIG. 9 is an enlarged view of the roof portion in FIG. 2, FIG. 10 is a cross-sectional view taken along line 10-10 in FIG. 11 is a sectional view taken along line 12-12 in FIG. 11, FIG. 13 is an enlarged sectional view taken along line 13-13 in FIG. 9, FIG. 14 is a sectional view taken along line 14-14 in FIG. 16 is a sectional view taken along line 16-16 of FIG. 15, FIG. 17 is a sectional view taken along line 17-17 of FIG. 15, and FIG. 18 is an enlarged sectional view taken along line 18-18 of FIG. 19 is a plan view showing the transmission device of the bicycle, FIG. 20 is an enlarged longitudinal sectional view showing the clutch in FIG. 19 in an ON state, FIG. 21 is a sectional view taken along line 21-21 in FIG. 20, and FIG. FIG. 23 is a cross-sectional view taken along line 23-23 in FIG.

  5 and 6, the body frame F of the three-wheeled bicycle B includes a front head pipe 1, a main frame 2 that extends obliquely downward from the front head pipe 1 and horizontally extends rearward, A handle support pipe 3 projecting obliquely rearward from the head pipe 1 to the upper side of the main frame 2, a first stay 4 connecting the handle support pipe 3 and the main frame 2, and a rear end portion of the handle support pipe 3 A fixed rear head pipe 5, a second stay 6 connecting the first stay 4 and the main frame 2, a main cross member 7 extending perpendicularly to the rear end of the main frame 2 and extending horizontally, A rear frame 9 is formed from the left and right sides of the main cross member 7 and then horizontally extended rearward and closed at the rear end.

  In the front head pipe 1, a fork stem 11 a integrally projecting from the upper end of the front fork 11 that supports the front wheel 10 f is rotatably supported, and in the rear head pipe 5, a handle stem coupled to the steering handle 12. 12a is rotatably supported. The upper end portion of the fork stem 11a and the lower end portion of the handle stem 12a are connected via a parallel link mechanism 13 so that the rotation of the steering handle 12 can be transmitted in synchronization with the front fork 11. .

  A swing arm assembly 14 that supports a pair of rear wheels 10r and 10r disposed below the rear frame 9 and on both the left and right sides is connected to the main cross member 7 so as to be swingable up and down.

  As shown in FIG. 15, a saddle 15 with a backrest 15 a that occupies a position in front of the left and right rear wheels 10 r, 10 r and lower than the upper surfaces thereof is attached to the main frame 2 via a saddle rail 65. The saddle 15 is disposed in front of the left and right rear wheels 10r, 10r and at a position lower than their upper surfaces. In front of the saddle 15, a crankshaft 17 having a pair of left and right pedals 16 and 16 is rotatably supported by the main frame 2.

  The saddle 15 is supported on a saddle rail 65 that is inclined forward and upward so as to be adjustable in the front-rear direction. A mounting boss 66 is provided on the lower surface of the rear end portion of the saddle rail 65, and a stay 67 is provided on the lower surface of the front end portion. The mounting boss 66 is attached to a rear bracket 68 standing on the upper surface of the main frame 2. The stay 67 is rotatably supported via a pivot 70 and is connected to a front bracket 69 erected on the upper surface of the main frame 2 by a bolt 71 so as to be adjustable in multiple steps in the vertical direction. Therefore, the position of the saddle 15 can be adjusted in the front-rear direction and the vertical direction according to the physique of the rider R.

  As shown in FIGS. 1 to 5 and 7, the vehicle body frame F includes a vehicle body made of synthetic resin (for example, reusable ABS) that covers the front wheels 10f, the rear wheels 10r and 10r, the saddle 15 and the like from above. A shell S is attached, and the inside thereof is a cabin 30 that accommodates the rider R. In the vehicle body shell S, a synthetic resin front fender 31 covering the front wheel 10 f and a synthetic resin rear fender 32 covering the left and right rear wheels 10 r and 10 r and the rear frame 9 are attached to the vehicle body frame F.

  The vehicle body shell S has a streamlined shape with an open lower surface, and entrances 63 and 63 opened and closed by doors 64 and 64 are provided on the left and right side walls, respectively. Further, a front window 35 and a rear window 36 into which a windshield 33 and a rear glass 34 are respectively fitted are provided at a front portion and a rear portion of the vehicle body shell S, and a wiper 37 for wiping the outer surface of the windshield 33 is attached to the vehicle body shell S. .

  As shown in FIG. 8, in order to attach the vehicle body shell S to the vehicle body frame F, the front head pipe 1 is fixedly provided with support rods 20 (see FIG. 6) protruding outward from the left and right sides. The support rod 20 includes front connection members 21 and 21 at both ends thereof. Further, rear connecting members 25 are provided at the left and right ends of the main cross member 7. The front connecting members 21 and 21 are bolted to the front connecting members 22 and 22 fixed to the left and right inner walls of the front portion of the vehicle body shell S with the intermediate member 23 interposed therebetween, and the rear connecting members 25 and 25 are connected to the rear connecting members 25 and 25. The rear connecting members 26, 26 fixed to the left and right inner walls of the rear portion of the vehicle body shell S are coupled by the bolts 28 with the intermediate member 27 interposed therebetween, so that the vehicle body shell S is attached to the vehicle body frame F. If the intermediate members 23 and 27 are made of an elastic member, vibration between the vehicle body frame F and the vehicle body shell S can be absorbed by the intermediate members 23 and 27.

  The structure around the rear frame 9 will be described with reference to FIGS.

  The rear frame 9 has two inclined portions 9a that rise from both the left and right sides of the main cross member 7 and extend obliquely rearward, and a U-shape that extends horizontally rearward from the rear end of these inclined portions 9a and closes at the rear end. It comprises a horizontal portion 9b, a horizontal cross member 9c that connects the left and right sides of the horizontal portion 9b, and a vertical cross member 9d that connects the horizontal cross member 9c and the rear side portion of the horizontal portion 9b. In particular, the vertical cross member 9d is made of a channel material having an open upper surface. The rear frame 9 is arranged so as to pass between the left and right rear wheels 10r and 10r in a plan view (see FIG. 6) and to pass through the front and upper portions of the rear wheel 10r in a side view (see FIG. 15). The rear fender 32 is attached to the upper surface of the rear frame 9 from the inclined portion 9a to the horizontal portion 9b. The rear fender 32 is formed of synthetic resin so as to cover the left and right rear wheels 10r, 10r with the left and right side edges and the rear edge in contact with or in close proximity to the inner surface of the vehicle body shell S. The part is formed in a loading platform 73 in which a surrounding wall 73a is erected on the periphery.

  Two mounting plates 74a and 74b are fixed to the lower surface of the horizontal portion 9b of the rear frame 9 with the vertical cross member 9d interposed therebetween. The battery 60 and the other mounting plate are mounted on the lower surface of one mounting plate 74a. Control circuit units 61 are respectively attached to the lower surface of 74b. The control circuit unit 61 controls energization between the battery 60 and the generator / motor 59 supported by the swing arm assembly 14, and the battery 60, the control circuit unit 61 and the generator / motor are controlled. A wire harness 75 (see z17) that connects to 59 is wired in the channel-shaped vertical cross member 9d.

  By attaching the battery 60 and the control circuit unit 61 to the lower surface of the horizontal portion 9b of the rear frame 9 in this way, the dead space between the left and right rear wheels 10r, 10r can be effectively used for installing them, and therefore the battery 60 And the enlargement of the three-wheeled bicycle B due to the installation of the control circuit unit 61 can be avoided. Moreover, since the battery 60 and the control circuit unit 61 are covered with the rear fender 32 attached to the upper surface of the rear frame 9, the appearance can be improved. Moreover, since the rear frame 9 is not affected by the vertical swing of the swing arm assembly 14 that supports the left and right rear wheels 10r, 10r, the battery 60 and the control circuit unit 61 avoid the vertical vibration of the rear wheels 10r, 10r. And the durability of these can be improved.

  Further, since the loading platform 73 is formed integrally with the rear fender 32 made of synthetic resin using the horizontal portion, the rear fender 32 and the loading platform 73 can be made into one component, resulting in a reduction in the number of components and the number of assembly steps. , Can contribute to cost reduction. The rider R can easily load and unload the luggage on the loading platform 73 while sitting on the saddle 15.

  Moreover, since there is no joint between the rear fender 32 and the loading platform 73, it is possible to reliably prevent the mud from jumping from the rear wheels 10r, 10r to the loading platform 73. Furthermore, since the loading platform 73 is surrounded by the vehicle body shell S, it is possible to prevent the luggage from falling off the loading platform 73 by the vehicle body shell S.

  The structure around the swing arm assembly 14 will be described with reference to FIGS.

  The main cross member 7 is welded with a pair of left and right support arms 77 and 77 protruding rearward, and a swing arm via a pair of left and right pivots 78 and 78 arranged coaxially with the support arms 77 and 77. The assembly 14 is connected to be swingable up and down, and a pair of left and right dampers 79 and 79 are provided between the swing arm assembly 14 and the rear frame 9 to cushion the swing arm assembly 14 from swinging up and down. The

  The swing arm assembly 14 includes a pair of left and right swing arms 90, 90 having front ends connected to the pair of support arms 77, 77 of the vehicle body frame F via pivots 78, 78, and both the swing arms 90, 90. Are formed by a front cross pipe 91 that integrally connects the middle portions of the two swing arms 90 and a rear cross pipe 92 that integrally connects the rear ends of the swing arms 90 and 90. A fixed axle 44 fixed to the rear end of one swing arm 90 (right swing arm in the illustrated example) is disposed adjacent to the outside of the swing arm 90 and close to the inner surface of the vehicle body shell S. On the other hand, the hub of the rear wheel 10r is rotatably supported.

  A rotating axle 47 arranged coaxially with the fixed axle 44 is rotatably supported at the rear end of the other swing arm 90 (left swing arm in the illustrated example). The hub of the other rear wheel 10r that is disposed adjacent to the vehicle shell S and close to the inner surface of the vehicle body shell S is coupled to the outer end portion of the rotating axle 47. Thus, the left and right rear wheels 10r, 10r are supported by the swing arm assembly 14 in a cantilever manner. Accordingly, the left and right rear wheels 10r, 10r can be brought close to the left and right inner surfaces of the vehicle body shell S without being interfered with by other objects, so that both the rear wheels 10r, The tread between 10r can be expanded to the maximum, which can contribute to the improvement of the stability of the three-wheeled bicycle B.

  In the swing arm assembly 14, the rear cross pipe 92 has a gate shape that rises from the upper surfaces of the rear end portions of the left and right swing arms 90, 90. Brackets 95, 95, 95 are bridged and welded, and the generator / motor 59 is attached to the two brackets 95, 95 on the fixed axle 44 side, and a later-described clutch is attached to the remaining one bracket 95 on the rotating axle 47 side. 46 clutch bases 163 are fixed. At that time, the generator / motor 59 and the clutch 46 are coaxially received between the fixed axle 44 and the rotating axle 47, that is, between the left and right rear wheels 10r, 10r, while being received inside the portal rear cross pipe 92. Be placed.

  Thus, the swing arm assembly 14, the left and right rear wheels 10r, 10r, the generator / motor 59, and the clutch 46 constitute a drive unit D. Moreover, the drive unit D is compactly configured by the coaxial arrangement of the left and right rear wheels 10r, 10r, the clutch 46, and the generator / motor 59.

  Further, the swing arm assembly 14 is configured by connecting the left and right swing arms 90, 90 by the front and rear cross pipes 91, 92, so that it has high rigidity and firmly supports the left and right rear wheels 10r, 10r. can do. Further, by forming the rear cross pipe 92 in a gate shape, interference between the rear cross pipe 92 and the clutch 46 and the generator / motor 59 can be avoided, which leads to a compact drive unit D.

  Further, the drive unit D can be assembled separately from the body frame F side, and can be connected to the body frame F via the left and right pivots 78 and 78 after the assembly. Can be increased.

  In FIG. 18, the left and right dampers 79, 79 have the same configuration. Each damper 79 is screwed into the rod 99 with a damper rubber 97, a mounting 98 baked on the front end surface of the damper rubber 97, a rod 99 having a flange 99 a baked on the rear end surface of the damper rubber 97, and the front end surface. The adjustment nut 100 is slidably fitted to the outer periphery of the rod 99, and the bottomed cylindrical support tube 101 is brought into contact with the adjustment nut 100. 9 is fixed to the front bracket 103a welded to the left and right base ends of the arm 9 by bolts 102. The support cylinder 101 is formed by a swing arm 90 by means of a bolt 104 projecting from the rear end and a nut 105 screwed thereto. The rear bracket 103b is welded to the rear bracket 103b so as to be detachable. At this time, the effective length of the damper 79 is adjusted by adjusting the screwing position of the adjustment nut 100 that receives the tip of the support cylinder 101 with respect to the rod 99.

  Thus, if the swing arm assembly 14 swings up and down around the pivots 78 and 78 together with the left and right rear wheels 10r and 10r, the damper rubber 97 is compressed or extended between the attachment 98 and the flange 99a. Thus, the swinging movement of the swing arm assembly 14 can be buffered, and the rider R sitting on the saddle 15 is given a good ride comfort.

  1 to 4 again, the synthetic resin body shell S is divided into a plurality of portions so as to be molded by a small-scale molding facility, and is joined by screws, adhesives, or the like after molding. Specifically, the vehicle body shell S includes left and right side panels 110 and 110 each having an entrance 63, a roof panel 111 connecting the upper ends of the left and right side panels 110 and 110, and left and right side panels 110. , 110 are divided into a front panel 112 that connects the front end portions of the left and right side panels 110 and 110, and a rear panel 113 that connects the rear end portions of the left and right side panels 110, 110.

  Further, the front panel 112 and the rear panel 113 are each divided into two vertically, and in particular, the lower half portions 112a and 113a are configured to be detachable. Thus, if the lower portions 112a and 113a are removed, the front wheel 10f and the rear wheel 10r can be exposed. Therefore, puncture repair of the front wheel 10f and the rear wheels 10r and 10r and the front brake 80 and the rear brake 81 described later are performed. Maintenance work around the front wheel 10f and the rear wheels 10r, 10r, such as adjustment, can be easily performed without being obstructed by the vehicle body shell S. In addition, the lower portions 112a and 113a are located at the front and rear ends of the vehicle body, and are easily damaged by contact with other objects. Since it can be repaired by exchanging it, the repair work is easy and the repair cost can be kept low.

  The connection structure of the left and right side panels 110 and 110 and the roof panel 111 will now be described with reference to FIGS. 9 and 10.

  First and second groove portions 114 and 115 having upper surfaces opened are formed at upper ends of the left and right side panels 110 and 110 and left and right end portions of the roof panel 111, respectively. The second groove portions 115 are overlapped with each other via a sealant, and are joined to each other by a plurality of screws 116, 116. After the joining, a synthetic resin molding 117 is fitted into the upper second groove 115 and fixed by adhesion or the like. The molding 117 protrudes outward from the second groove 115 and is formed so as to define a groove 118 extending in the front-rear direction between the upper surface of the roof panel 111.

  Thus, the first and second groove portions 114 and 115 joined to each other not only connect the side panel 110 and the roof panel 111 in a watertight manner, but also reinforce the thick wall protruding inside the vehicle body shell S. The rib 119 is configured, and thereby the rigidity of the vehicle body shell S can be effectively enhanced.

  Further, the molding 117 fitted into the upper second groove 115 can cover the second groove 115 and the heads of the screws 116, 116... To improve the appearance of the vehicle body shell S.

  The mall 117 further cooperates with the roof panel 111 to define a gutter groove 118 that runs in the front-rear direction above the entrance / exit 63 of the side panel 110. Rainwater that has fallen on the roof panel 111 flows down along the ridge groove 118 in the front-rear direction of the roof panel 111, and when the door 64 or the window of the door 64 is opened, the roof panel 111 moves to the entrance 63 or the window. Rain water dripping can be prevented.

  When the first and second groove portions 114 and 115 are overlapped, if the second groove portion 115 on the roof panel 111 side is placed on the upper side, a seal failure between the groove portions 114 and 115 should occur. Even in this case, it is effective to prevent rainwater that has fallen on the roof panel 111 from entering between the two groove-like portions 114 and 115.

  9-12, the upper surface of the roof panel 111 is formed with shallow recesses 121, 122 having two inner and outer steps in the widest possible range, and the battery 60 can be charged in the inner recess 121. The outer solar cell 123 is accommodated, and an outer concave portion 122 accommodates a transparent protective cover 124 made of, for example, acrylic so as to overlap and cover the solar cell 123. The protective cover 124 includes a plurality of screws 125, 125. Is fixed to the roof panel 111 by. The inner and outer two-stage recesses 121 and 122 are formed at depths corresponding to the thicknesses of the solar cell 123 and the protection cover 124, respectively, and the upper surface of the protection cover 124 fitted into the outer recess 122 is the roof panel 111. It is substantially continuous with the upper surface. A lead wire wired on the inner wall of the vehicle body shell S is connected to the rear end of the solar cell 123, but is not shown in the drawing.

  The roof panel 111 is formed with drain grooves 126, 126... For communicating the front, rear, left and right corners of the inner recess 121 with the outer surface of the roof panel 111 lower than the recess 121. Specifically, each drain groove 126 extends outward as shown by the solid line in FIGS. 9 and 11 to communicate with the groove 118, or extends in the front-rear direction to extend the front window 35 or the rear window 36. Communicate with the upper edge. Each drain groove 126 is gradually shallower toward the downstream end, and the groove bottom is continuous with the general outer surface of the roof panel 111 at the downstream end (see FIGS. 11 and 12).

  Thus, the transparent protective cover 124 accommodated in the outer concave portion 122 can completely cover the solar cell 123 accommodated in the inner concave portion 121. It is possible to reliably prevent the solar cell 123 from being damaged by falling objects such as. Moreover, since the protective cover 124 is smoothly continuous with the upper surface of the roof panel 111, an increase in the air resistance of the vehicle body shell S due to the solar cell 123 and the protective cover 124 can be avoided.

  In addition, even when rainwater enters the recesses 121 and 122 inside and outside during rainy weather, the rainwater naturally flows out from the drain grooves 126, 126. In particular, each drain groove 126 gradually becomes shallower toward the downstream end, and since the groove bottom continues to the outer surface of the vehicle body shell S at the downstream end, drainage from the drain groove 126 is reliable and rainwater does not accumulate. In addition, when the weather is fine, the recesses 121 and 122 are naturally ventilated by running winds and the like through the drain grooves 126, 126, so that the surface of the solar cell 123 and the inner surface of the protective cover 124 are prevented from being fogged. Decline can be prevented.

  Further, since the protective cover 124 is fixed to the roof panel 111 by a plurality of screws 125, 125... At the outer concave portion 122 and holds the solar cell 123, the light receiving area of the solar cell 123 is reduced by the fixing means of the protective cover 124. Can be avoided.

  9, 13, and 14, a pedestal 130 is formed on the upper surface of the front end portion of the roof panel 111, and a wind speed sensor 131 is attached thereto. This wind speed sensor 131 is fixed to a sensor base 133 fixed to the pedestal 130 with a screw 132, an impeller 134 having a rotating shaft 134a rotatably supported by the sensor base 133, and a column 133a standing up from the sensor base 133. And a cover 135 that covers the impeller 134. The sensor base 133 is provided with a detection chamber 136, in which a permanent magnet 137 fixed to the rotating shaft 134 a and a hall element 138 opposed to the permanent magnet 137 are accommodated, and the rotational speed of the impeller 134 is controlled by the hall element. 138 is detected as an electrical signal. A signal detected by the Hall element 138 is input to the control circuit unit 61. In the control circuit unit 61, the input signal is converted into the wind speed, and the wind speed is displayed on the wind speed display section 140 of the operation panel 19 (see FIG. 4) attached to the steering handle 12, and when the wind speed is higher than the predetermined wind speed. , An alarm buzzer 150 provided at an appropriate position on the operation panel 19 or the like is operated.

  In addition, a detection signal of the vehicle speed sensor 151 that detects the traveling speed of the bicycle B is input to the control circuit unit 61 in parallel with the signal generated by the wind speed sensor 131. In the control circuit unit 61, when the departure state of the bicycle B is determined from the vehicle speed, the display on the wind speed display unit 140 and the operation of the alarm buzzer 150 are stopped.

  Thus, since the wind speed sensor 131 is installed in the roof part of the vehicle body shell S, the external wind speed can be accurately detected without being affected by the vehicle body shell S. In the cabin 30, the rider R can accurately know the wind speed from the wind speed display unit 140 of the operation panel 19 before starting, and can also know the state by operating the alarm buzzer 150 when the wind speed is higher than a predetermined wind speed. Therefore, the situation can be utilized for safe driving.

  In addition, the saddle 15 with the backrest 15a is disposed between the front wheel 10f and the rear wheels 10r, 10r at a position lower than the upper surface of the rear wheels 10r, 10r, thereby effectively lowering the riding posture of the rider R. Accordingly, the total height of the streamlined vehicle body shell S can be made sufficiently low, and the influence of wind can be minimized as much as possible during traveling.

  When the bicycle B is in the running state, the wind speed sensor 131 cannot detect the accurate wind speed due to the influence of the running wind. In this case, the control circuit unit 61 displays the warning on the wind speed display unit 140 and the alarm buzzer 150. Therefore, the malfunction of the wind speed display unit 140 and the alarm buzzer 150 due to the influence of the traveling wind can be prevented.

  5 and 19, the crankshaft 17 and the hub of one rear wheel 10r are connected by a transmission M. The transmission device M will be described.

  The transmission M includes a first chain transmission mechanism 41, a second chain transmission mechanism 42, a multi-speed transmission 45 with a free wheel, a third chain transmission mechanism 43, a drive shaft 48, a generator / motor 59, a clutch from the crankshaft 17 side. 46 and a rotating axle 47 are sequentially connected.

  The first chain transmission mechanism 41 is configured by winding a first chain 51 around a first drive sprocket 50 fixed to the crankshaft 17 and a first driven sprocket 50 ′ rotatably supported on the main frame 2. Is done. A pedal load sensor 58 that detects a load acting on the crankshaft 17, that is, a pedal load, is attached to the main frame 2 based on the degree of tension of the first chain 51.

  The second chain transmission mechanism 42 includes a second drive sprocket 52 fixed to the transmission shaft 59 adjacent to the first driven sprocket 50 ′ and a second driven sprocket 52 ′ fixed to the input shaft 45 a of the transmission 45. And the second chain 53 is wound around.

  The transmission 45 incorporates a free wheel that allows transmission in only one direction from the input shaft 45a to the output shaft 45b. Since the free wheel blocks the reverse load on the crankshaft 17, it can also be provided in the first chain transmission mechanism 41 or the second chain transmission mechanism 42.

  A third drive sprocket 55 is fixed to the output shaft 45 b of the transmission 45. A drive shaft 48 is connected to the rotor shaft 59 a of the generator / motor 59 via a joint 57, and a third driven sprocket 55 ′ is fixed to the drive shaft 48. The third chain transmission mechanism 43 is configured by winding the third chain 56 around the third drive sprocket 55 and the third driven sprocket 55 ′. On the output side of the third driven sprocket 55 ′, the clutch 46 that can connect and disconnect the drive shaft 48 and the rotating axle 47 is provided.

  As shown in FIG. 16, the transmission 45 is supported by the main cross member 7 of the vehicle body frame F via left and right brackets 153 and 153, and between the left and right pivots 78 and 78 of the swing arm assembly 14. The input and output shafts 45a and 45b are arranged so as to be coaxially arranged. Therefore, even when the swing arm assembly 14 swings around the pivot shafts 78, 78, the chains 53 of the second and third chain transmission mechanisms 42, 43 connected to the input shaft 45a and the output shaft 45b of the transmission 45, respectively. Since the expansion and contraction does not occur in 56, the durability can be improved.

  Subsequently, the brake device of the bicycle B will be described with reference to FIG.

  The front wheel 10f is provided with a caliper type front brake 80 for braking the same, and the driven rear wheel 10r is provided with a drum type rear brake 81 for braking the same. A front brake lever 82 attached to the steering handle 12 adjacent to the right grip and a parking lever 83 attached to the front portion of the main frame 2 are provided on the operating portion of the front brake 80, and the front brake wire 84 and The parking wires 85 are connected to each other. Therefore, the front brake 80 can be operated by operating either the front brake lever 82 or the parking lever 83.

  The rear brake 81 is connected to a rear brake lever 86 attached to the steering handle 12 adjacent to the left grip via a rear brake wire 88. Therefore, the rear brake 81 can be operated by operating the rear brake lever 86. In FIG. 8, reference numeral 89 denotes a shift lever for switching the transmission 45.

  Next, the clutch 46 in the transmission M will be described with reference to FIGS.

  The clutch 46 includes a driving dog clutch member 155 that is slidably splined to the driving shaft 48, a driven dog clutch member 156 that is fixed to the rotating axle 47 and is opposed to the driving dog clutch member 155, and a driving shaft 48. A clutch spring 158 is provided between the fixed retainer 157 and the driving dog clutch member 155 and urges the driving dog clutch member 155 in the direction of engagement with the driven dog clutch member 156. A flange 155a is formed on the outer periphery of the end of the driving dog clutch member 155 on the clutch spring 158 side.

  On the other hand, the clutch base 163 fixed to the bracket 95 of the swing arm assembly 14 supports the drive shaft 48 via a bearing 154. Further, the drive shaft 48 supports the driven dog clutch member 156 via the bearing 164 at the tip portion thereof.

  A base end of a release fork 159 surrounding the driven dog clutch member 156 is connected to the clutch base 163 via a pivot shaft 160, and a release ring 161 is coaxially arranged with a pair of trunnions 162, 162 on the release fork 159. Via a swingable connection. The release ring 161 surrounds the drive dog clutch member 155 and comes into contact with the flange 155a surface-to-face.

  A clutch wire 87a connected to a clutch lever 87 (see FIG. 19) pivotally supported on the steering handle 12 or the vehicle body frame F in the vicinity thereof is connected to the distal end portion of the release fork 159.

  Thus, when the clutch lever 87 is in an inoperative state, the drive dog clutch member 155 is engaged with the driven dog clutch member 156 by the urging force of the clutch spring 158, so that the clutch 46 moves between the drive shaft 48 and the rotating axle 47. When the clutch lever 87 is operated and the clutch wire 87a is pulled by keeping the connected ON state, the release fork 159 presses the flange 155a via the release ring 161, and the driving dog clutch member 155 is pulled away from the driven dog clutch member 156. Thus, the clutch 46 enters an off state in which the drive shaft 48 and the rotary axle 47 are disconnected. When the clutch 46 is off, the rotation of the crankshaft 17 by the rider R is transmitted to the generator / motor 59 while the bicycle B is stopped, so that the generator / motor 59 can function as a generator.

  By the way, when the clutch 46 is in the OFF state, the release ring 161 that is swingably connected to the release fork 159 via the trunnions 162 and 162 comes into contact with the flange 155a of the drive dog clutch member 155. Wear resistance can be improved by keeping the surface pressure at the contact portion low.

  A vehicle speed sensor 151 is provided between the rotary member on the input side of the clutch 46, in the illustrated example, between the drive shaft 48 and the clutch base 163. This vehicle speed sensor 151 is fixed to a drive shaft 48 and a pulse rotor 165 coupled to rotate together with the drive shaft 48 and to the clutch base 163 so as to face the pulse rotor 165, and generates a pulse according to the rotation of the pulse rotor 165. The pick-up coil 166 is converted into a vehicle speed by the control circuit unit 61 and displayed on the vehicle speed display 167 of the operation panel 19 on the steering handle 12 (see FIG. 4). The

This three-wheeled bicycle B is used in the following modes.
[Electric assist driving]
First, when the rider R drives the crankshaft 17 by stroking the pedals 16 and 16 with the clutch lever 72 set to the on position and the clutch 46 turned on, the control circuit unit 61 is switched to the assist side, The driving force is transmitted to the rear wheel 10r through the first chain transmission mechanism 41, the second chain transmission mechanism 42, the transmission 45, the third chain transmission mechanism 43, the clutch 46 and the rotating axle 47 in order, and at the same time, the generator / motor 59 Is supplied from the battery 60 in accordance with the pedal load, and power corresponding to the pedal load is applied to the rotating axle 47, so that an assist travel state is achieved in which the burden on the rider R is reduced.
[Strengthening training]
When the clutch lever 72 is set to the ON position and the clutch 46 is in the ON state as in the above case, and the control circuit unit 61 is switched to the charging side, the generator / motor 59 generates power when receiving a reverse load. Thus, the battery 60 can be charged. Therefore, if the rider R scoops the pedals 16 and 16 to drive the crankshaft 17, the driving force is generated by the first chain transmission mechanism 41, the second chain transmission mechanism 42, the transmission 45, the third chain transmission mechanism 43, The power is transmitted to the rear wheel 10r through the clutch 46 and the rotating axle 47 in sequence, and is driven. At the same time, the generator / motor 59 is brought into a power generation state by the rotation of the driving shaft 48 and charges the battery 60. Since the load generated by the power generation is added to the pedal load of the rider R, the rider R can perform physical fitness training while running the bicycle B and can simultaneously charge the battery 60. In this case, by operating a pedal load adjustment dial 168 provided on the operation panel 19, the amount of charge from the generator / motor 59 to the battery 60 can be controlled to increase or decrease, thereby freely adjusting the strength of the pedal load. Therefore, the pedal load can be freely adjusted according to the physical strength and fatigue level of the rider R, and training can be performed comfortably and comfortably.
[Strength training for stationary training]
First, the parking lever 83 is operated to activate the front brake 80, the clutch lever 72 is operated to the off position to turn off the clutch 46, and the control circuit unit 61 is switched to the charging side. As in the case of the enhanced running training], the generator / motor 59 can generate power and charge the battery 60 when receiving a reverse load. Therefore, if the rider R scoops the pedals 16 and 16 to drive the crankshaft 17, the driving force is applied to the first chain transmission mechanism 41, the second chain transmission mechanism 42, the transmission 45 and the third chain transmission mechanism 43. Then, it is transmitted to the generator / motor 59, but is not transmitted to the rotating axle 47 due to the clutch 46 being turned off. Therefore, since the generator / motor 59 is driven by driving the crankshaft 17 with the rear wheel 10r stopped, the generator / motor 59 enters a power generation state and charges the battery 60. Since the load generated by the power generation is added to the pedal load of the rider R, the rider R can perform physical fitness training and can charge the battery 60 at the same time. Also in this case, by operating the pedal load adjustment dial 168, the amount of charge from the generator / motor 59 to the battery 60 can be controlled to increase / decrease, so that the strength of the pedal load can be adjusted freely. In this case as well, the pedal load can be freely adjusted according to the physical strength and fatigue level of the rider R, so that the training can be performed comfortably and comfortably.

  In this case, the bicycle B is a three-wheeled vehicle that is held in a stationary state by the operation of the parking lever 83, and that has one front wheel 10f and two rear wheels 10r, and can stand on its own without using a special stand device. Therefore, it can be safely used as a stationary training device for improving physical fitness, regardless of the installation location such as the garage or garden at home, and the kinetic energy of the rider R is converted into electric power charged in the battery. Therefore, there is no waste of energy. In addition, since the three-wheeled bicycle B includes the vehicle body shell S that accommodates the rider R, traveling and trailing can be performed comfortably regardless of the weather.

  As described above, the vehicle speed sensor 151 detects the rotational speed of the drive shaft 48 on the input side of the clutch 46 as the vehicle speed, and the vehicle speed is displayed on the vehicle speed display portion 167 of the operation panel 19. The vehicle speed corresponding to the rotation speed of the crankshaft 17 is also displayed on the vehicle speed display unit 167 even during stationary trailing with the 46 in the off state. Can be interested in.

  If the clutch wire 87a and the parking wire 85 can be operated by one common operating lever, the front brake 80 is automatically activated during the stationary training to turn the clutch 46 off, Operation can be simplified.

  Finally, the lighting device provided in the vehicle body shell S will be described.

  1 to 3 and FIG. 23, a lamp housing 170 that opens forward and a lens 171 that covers the front opening are fixed to the left and right sides of the front surface of the vehicle body shell S. The inner surface of the lamp housing 170 is a reflecting surface. A lamp mounting base 172 is adjustably mounted on the rear surface of the lamp housing 170, and a head lamp 38, an auxiliary head lamp 173, and a winker lamp 39 each having a leading end projecting into the lamp housing 170 are attached to the lamp mounting base 172. Is installed. At this time, in particular, the auxiliary headlamp 173 is disposed outside the headlamp 38, and the irradiation direction is set to be outward and downward of the vehicle.

  On the other hand, as shown in FIGS. 1 and 23, a lower window 174 is provided at the lower part of the left and right side walls of the vehicle body shell S at an intermediate portion between the entrance / exit 63 and the lamp housing 170. Through this lower window 174, the road surface on the left and right outer sides of the front portion of the bicycle B can be seen, and the auxiliary headlamp 173 illuminates the field of view extending outside the lower window 174. A transparent lid 175 that can open and close the lower window 174 on the cabin 30 side is pivotally supported by the vehicle body shell S.

  In this way, the rider R can check the road surface condition outside the front of the vehicle through the lower window 174 and the transparent lid 175 while sitting on the saddle 15, and the auxiliary headlamp 173 can be confirmed even at night. Since the field of view outside the lower window 174 is projected by the lighting of, the road surface condition can be confirmed. Therefore, the blind spot of the rider R is reduced, which can contribute to safe driving. If the lid 175 is opened, outside air can be introduced into the cabin 30 from the lower window 174.

  In addition, since the head lamp 38, the auxiliary head lamp 173, and the turn signal lamp 39 are disposed in the common lamp housing 170, the lighting device can be simplified even if the auxiliary head lamp 173 is newly provided.

  As shown in FIGS. 1 and 4, at the rear of the vehicle body shell S, tail lamps 176 are provided at the center and winker lamps 40 and 40 are provided on both the left and right sides.

  The present invention is not limited to the above embodiments, and various design changes can be made without departing from the scope of the invention. For example, the damper 79 can be replaced with various types such as a spring type and a hydraulic type instead of the rubber type.

The side view of the three-wheeled bicycle which concerns on the Example of this invention. The top view of the bicycle. The enlarged front view of the bicycle. An enlarged rear view of the bicycle. The side view which shows the bicycle in the state which removed the vehicle body shell. The top view which shows the same bicycle in the state which removed the vehicle body shell. FIG. 7 is a cross-sectional view taken along line 7-7 in FIG. FIG. 8 is an enlarged sectional view taken along line 8-8 in FIG. 1. The enlarged view of the roof part in FIG. FIG. 10 is a sectional view taken along line 10-10 in FIG. 9; FIG. 11 is an enlarged view of a portion 11 in FIG. 9. 12-12 sectional view taken on the line of FIG. FIG. 13 is an enlarged sectional view taken along line 13-13 in FIG. 9; FIG. 14 is a sectional view taken along line 14-14 of FIG. FIG. 6 is an enlarged view of a rear wheel and a saddle periphery in FIG. 5. FIG. 16 is a sectional view taken along line 16-16 in FIG. 15; FIG. 17 is a sectional view taken along line 17-17 in FIG. 15; FIG. 18 is an enlarged sectional view taken along line 18-18 in FIG. 16. The top view which shows the transmission device of the bicycle. The enlarged longitudinal cross-sectional view which shows the clutch in FIG. 19 in an ON state. The 21-21 line expanded sectional view of FIG. FIG. 21 is a view corresponding to FIG. 20 showing an off state of the clutch. FIG. 23 is an enlarged sectional view taken along line 23-23 in FIG. 1;

Explanation of symbols

B ... three-wheeled bicycle D ... drive unit F ... body frame M ... transmission R ... rider S ... body shell 10f .... Front wheel 10r ... Rear wheel 14 ... Swing arm assembly 15 ... Saddle 16 ... Pedal 17 ... Crankshaft 30 ... Cabin 42 ... Chain transmission Mechanism (second chain transmission mechanism)
43 ··· Chain transmission mechanism (third chain transmission mechanism)
45 .... Transmission 45a ... Input shaft 45b ... Output shaft 47 ... Rotating axle 59 ... Power generation / motor 59 ... Rotor shaft 78 ... Axis 79 ... ··damper

Claims (3)

A saddle (15) disposed in front of the left and right rear wheels (10r) and below the upper surface of the rear wheels (10r), and a crank with a pedal (16) disposed in front of the saddle (15) The shaft (17) is supported by the body frame (F), and the rotor shaft (59a) of the generator / motor (59) is connected to the transmission (M) that connects the crankshaft (17) and the rear wheel (10r). A vehicle body shell (S) that covers a front wheel (10f), a rear wheel (10r), and a saddle (15) to define a cabin (30) that accommodates a rider (R) is attached to a vehicle body frame (F). In type bicycle,
The rear end portions of a pair of left and right swing arms (90) supported by the vehicle body frame (F) via a pivot (78) so as to be vertically swingable are coupled together via a gate-shaped cross pipe (92). The swing arm assembly (14) is configured, and a damper (79) is provided between the swing arm assembly (14) and the vehicle body frame (F) to buffer the swinging of the swing arm assembly (14). The rear wheel (10r), which is disposed adjacent to the outside of the swing arm (90) and adjacent to the inner surface of the vehicle body shell (S), is rotatably supported on the rear end of the swing arm (90). A rotary axle (47) connected to the transmission (M) is rotatably supported at the rear end of the swing arm (90), and the other swing arm (90) is attached to the rotary axle (47). The vehicle body is placed adjacent to the outside A generator / motor (59), which connects the other rear wheel (10r) close to the inner surface of the shell (S) and a rotor shaft (59a) to the rotating axle (47), is connected to the cross pipe (92). ) And a three-wheeled bicycle that is placed inside the gate. The three-wheeled bicycle according to claim 1,
A pair of left and right pivots (78) are disposed with a space between each other, and an input shaft (45a) and an output of a transmission (45) supported by the vehicle body frame (F) are disposed between the pivots (78). The shaft (45b) is coaxially disposed, and the input shaft (45a) is connected to the crankshaft (17) and the output shaft (45b) is connected to the rotor shaft (59a). A three-wheeled bicycle characterized by being connected via In the three-wheeled bicycle according to claim 1 or 2,
Between the rotor shaft (59a) and the rotating axle (47), a clutch (46) that can be arbitrarily connected and disconnected is interposed, and this clutch (46) is also attached to the cross pipe (92). , A three-wheeled bicycle characterized by being placed inside the gate shape.

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