TWI266720B - Scooter type motorcycle - Google Patents

Abstract

To increase the degree of freedom of an engine shape by enlarging a space under a main pipe and to realize optimization of operation property by giving suitable flexibility to a vehicle body frame in a scooter type motorcycle having a leg putting space of an approximately U shape in side view between a head pipe provided on a front end of a vehicle body frame while steerably supporting a front fork for pivotally supporting a front wheel and a riding seat seated with a vehicle driver for operating steering handle connected to an upper part of the front fork. In a pair of left and right main pipes constituting a part of the vehicle body frame F, a front inclination part 20a extending from a lower pipe 19 in a rear upward direction and continuously provided with a lower end of a down pipe 18 on a midway part; a rear inclination part 20b extending in a rear downward direction; a curved part 20c curved so as to be upwardly expanded and connecting a rear end of the front inclination part 20a and a front end of the rear inclination part 20b are integrally continuously formed.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a head provided at a front end of a vehicle body frame for steering the front portion in such a manner as to steerably support the shaft support fork Between the seat cushions on which the steering handlebars of the upper part of the fork are connected, there is a skating type locomotive which is slightly straddle-footed from the side, [Prior Art] This locomotive, for example, is patented. [Patent Document 1] Japanese Laid-Open Patent Publication No. 2003-160081 [Draft of the Invention] [Problem to be Solved by the Invention] φ A part of the Scooter type locomotive disclosed in Patent Document 1 is Below the foot-foot space, a horizontal frame portion extending forward and backward is formed, and the horizontal frame portion is an engine suspension in which a useful engine is disposed, and most of the engine is disposed at the horizontal level. In this case, it is desirable to have a large space below the horizontal frame and to increase the degree of freedom of the engine shape. For the purpose of operability, it is also desirable to make the body frame flexible. The present invention, in view of such a situation, aims to provide a locomotive that enlarges the space under the main pipe to further increase the front tube of the front wheel of the engine and to support the driver's U-shaped body frame substantially horizontally to support the guide frame. It is ensured that the self--4-(2) 1266720 degree is improved to the shape of the speed-increasing type, and the body frame has appropriate flexibility to make the operability better [means for solving the problem] In the first aspect of the invention, the head pipe provided at the end of the vehicle body frame and the steering handle connected to the upper portion for operating the front fork are rotatably supported by the front fork that supports the front wheel by the steering wheel. Between the seat cushions used by the driver of the vehicle, there is a speed skating type locomotive which is viewed from the side φ as a slightly U-shaped cross-foot space, and the above-mentioned body frame is provided with: a pair of left and right lower pipes extending from the head pipe toward the rear lower side, and a pair of left and right lower pipes extending downward from the head pipe toward the lower rear side and the lower pipe Extended at the rear, and And connecting a lower end of the two lower tubes to a pair of left and right main tubes provided at an intermediate portion; the main tube is a front half inclined portion extending from the lower side toward the upper rear side and the lower side tube The rear half inclined portion extending rearward and downward obliquely, and the curved portion which is bent in an inflated shape toward the Φ, and connects the rear end of the front half inclined portion and the front end of the rear half inclined are integrally connected. According to a second aspect of the invention, in the first aspect of the invention, the engine suspension for supporting the engine is provided in the vicinity of the lower pipe and in the front half inclined portion of the main pipe. According to a third aspect of the invention, in the first aspect of the invention, the ends of the pair of left and right seat cushion rails extending obliquely upward and upward are supported by the rear half inclined portions of the two main tubes, respectively, so as to support the passenger seat cushion. Front section. According to a fourth aspect of the invention, the second invention has the mutual composition|

The above-mentioned engine with the V-shaped front and rear cylinders of the c 刖V -5- (3) 1266720 type is quoted from the upper end of the pipe end and is in the front and rear rows. The cylinders are mounted on the vehicle body frame so as to be supported between the cylinders, and the rear cylinders are disposed between the curved portions of the two main pipes. According to a fifth aspect of the invention, in the first aspect of the invention, the main pipe is formed by a rectangular tube having a transverse cross-sectional shape that is longer than a right-angle direction in a right-angled quadrangle. [Effect of the Invention] According to the first aspect of the invention, the main pipe is formed so as to extend from the lower pipe toward the upper rear side and then to the upper side, and then to the lower rear and the lower side, so that the space below the main pipe can be made. Larger, the degree of freedom in the shape of the engine can be increased, and the intermediate portion of the main pipe can be flexed appropriately, so that optimum maneuverability can be achieved. According to the second aspect of the invention, the engine is supported by the main pipe by the portion having a strong rigidity connected to the lower pipe, so that the engine φ can be more efficiently and surely supported by the vehicle body frame. According to the third aspect of the invention, the angle formed by the main pipe and the seat rail can be made more appropriate, and the joint rigidity of the seat rail to the main pipe can be improved, and the balance is better. According to the fourth aspect of the invention, the V-shaped engine can be efficiently mounted on the vehicle body frame by supporting the V-shaped engine between the front row and the rear row of the V-shaped engine in a portion where the rigidity of the main pipe is high. According to the fifth aspect of the invention, the rigidity of the main pipe in the vertical direction can be improved, and the flexibility in the right and left direction can be obtained, and more suitable maneuverability can be obtained. -6- (4) 1266720 [Embodiment] Figs. 1 to 7 show a first embodiment of the present invention, and Fig. 1 is a side view of a Scooter type locomotive, and Fig. 2 is a front view of a locomotive A longitudinal sectional side view showing an enlarged view, Fig. 3 is a front view of the engine, Fig. 4 is an enlarged sectional view taken along line 4 - 4 of Fig. 1, and Fig. 5 is a partial notched side view showing an enlarged view of the vicinity of the handlebar locking device. Fig. 6 is a longitudinal sectional side view showing an enlarged φ rear portion of the sked type locomotive, and Fig. 7 is a sectional view taken along line 7-7 of Fig. 6. First, in Fig. 1, the body frame F of the scooter type locomotive includes a front fork 15 that supports a front wheel WF and a steering handlebar 16 that is coupled to the front fork 15 to be steerably supported. a head pipe 17, a pair of right and left lower pipes 1 8 extending from the head pipe 17 toward the lower rear side, and a lower left pipe 18 of the lower pipe 18 are connected to the head pipe 17 and compared with The two lower tubes 18 are extended to the rear, and the left and right pair of lower tubes φ 1 9... extending at a steep inclination, and connected to the lower ends of the lower tubes 1 9 ... to extend rearward, and the above two The rear ends of the lower tubes 1 8 are connected to a pair of left and right main tubes 20 provided in the middle portion. At the lower end of the lower pipe 19, the engine bracket 19a is engaged, and the engine bracket 19a is extended in the extending direction of the lower pipe 19.... The main pipe 20··· is extended rearward from the vicinity of the joint portion of the low pipe 19... and the engine bracket 19a... In this embodiment, the engine bracket 19a is provided as the main pipe 20·. The function of the connecting member toward the lower end of the low pipe 19.... A reinforcing connecting plate 2 1 is provided between the right and left paired lower tubes 1 8 ... and the intermediate portions of the low tubes 1 9 . -7- (5) 1266720 Referring to Fig. 2, the main pipe 20 is a front half inclined portion 20a extending obliquely rearward from the lower end of the lower pipe 19, and a rear half inclined portion 20b extending obliquely rearward and downward. And the curved portion 20c that connects the rear end of the front half inclined portion 20a and the front end of the rear half inclined portion 20b in an expanded manner, and is integrally connected, as disclosed in FIG. 3, which will be described later, It is composed of a square tube having a slightly right-angled quadrangle whose longitudinal direction is longer than the left-right direction. Further, in the intermediate portion of the front half inclined portion 20a, φ is connected to the lower end of the lower tube 18 by welding. In the front portion of the rear half inclined portion 20b, the connecting plate 2 2 is joined by welding, and the front end of the seat cushion rail 2 extending obliquely upward and rearward is coupled to the connecting plate 22, and a pair of left and right seat cushions The rear portions of the rails 23··· are integrally connected to each other. Further, in this embodiment, a part of the distal end side of the connecting plate 22 is disposed to lean against the curved portion 20c, whereby the connecting plate 22 and the seat cushion rail 23 can be efficiently coupled to the rear half inclined portion 20b of the main pipe 20. Front section. On the rear side of the seat cushion rails 23, the rear ends of the rear tubes 24, which are joined to the rear end of the rear half inclined portion 20b and joined obliquely rearward and upward, are joined by welding. And the pair of right and left seat cushion rails 23... and the rear tube 24·. . Between the intermediate portions, a reinforcing connecting plate 25 is provided. Referring to Fig. 3, in the vehicle body frame F, a power unit PA is mounted to drive the rear wheel WR, and the power unit PA is driven by a four-stroke engine EA and an output of the engine EA. The gearbox Μ is composed. The engine block is configured by, for example, a water-cooled single cylinder, and includes a crankcase 28 having a cylinder axis extending upward and downward, and a cylinder block 29 extending upward from the -8-(6) 1266720 crankcase 28, A cylinder head 30 coupled to the cylinder block 29 on the opposite side of the crankcase 28, and a cylinder head cover 31 coupled to the top of the cylinder head 30. In the vicinity of the lower end of the lower tube 18 of the vehicle body frame F, and in the front half inclined portions 20a of the two main pipes 20, ..., the first engine suspension 32 is provided in the cylinder block 29 of the engine EA. In the front, the upper portion of the crankcase 28 is supported by the first engine suspension 32. At a lower end of the engine bracket 19a... connected to the lower φ end of the low pipe 19..., a second engine suspension 33·.· is attached by a pair of bolts 43..., and a lower front portion of the crankcase 28 is locked with a bolt 44 The front lower portion of the crankcase 28 is supported. In this manner, the engine EA can be supported by the two main tubes 20 in a portion having a high rigidity, by a pair of bolts 26 of the extension line of the center line of the lower tube 18... Locking, the first engine suspension 32 is disposed in the front half inclined portion 20a of the two main pipes 20, and the crankcase 28 of the engine EA is extended by the center line of the lower pipe 18··· The locking of the bolts 27 on the wire, while being supported by the first engine suspension 32..., can support the crankcase 28 in the first engine suspension 32 in a more efficient and rigid manner. . In the fourth diagram, the crankshaft 34' rotatably supported by the crankcase 28 is integrally provided with a pair of crank arms 34a and 34a and a crank pin 34b coupled between the crank arms 34a and 34a. The piston 35 that is slidably fitted to the cylinder block 29 is a crank pin 34b that is coupled between the two crank arms 34a and 34a via a link 36. On the left side of the traveling direction of the locomotive, one end of the crankshaft 34, -9-(7) 1266720, protrudes from the crankcase 28, and is: a rotor 37 fixed to the end of the crankshaft 34, and a housing The stator in the rotor 37 has an AC generator 39 which is covered by a left outer casing 40 of the joint 28. The stator 38 is fixed at 40°. The cylinder head 30 is provided with intake air. a valve and an exhaust valve are provided for opening and closing a part of the intake valve and the exhaust valve, and are rotatably supported by the cylinder camshaft 41, the crankcase 28, and the AC Between the motors 39 to 34, a timing transmission 42 is provided, the crankshaft 34 is forced to be decelerated by the timing transmission 42 and then the camshaft 41 is transmitted. The crankcase on the right side of the traveling direction of the locomotive is coupled to: a crankcase main body extending rearward from the crankcase 28; a right outer casing 46 locked to the right side of the crankcase main body 45, the crankcase main body The gearbox 47 on the right side of the rear portion of the rear portion of the crankcase 4 is formed by the axle box main body 45, and the shifting chamber 49 is formed between the crankcase 3 and the right outer casing 46, and is formed between the crankcase main body wheel box 47. The gear chamber is 5 〇. The shifting chamber 49 of the above-described transmission case 48 is a stepless speed changer that accommodates the rotational power of the shaft 34 in a stepless manner and then transmits it to the rear wheel type. The stepless transmission Μ is provided with a drive 51 provided in the shifting chamber 49 and attached to the other end of the crankshaft 34, and has an axis parallel to the crankshaft 34, and one of the freely rotatable members is formed on the crankshaft. The box is in the left outer casing [(the rotation of the crankshaft between the nozzles without the valve head 30 is up to the above I 28, which is 豊45, yes, locked in the above-mentioned curved body 45 and 45 and teeth: the curved side Belt: The surface is supported for the moving pulley. *10- (8) 1266720 4 9 The belt is driven to change the chamber to the white chamber. The 7 7 shell is 5 7 4 4 The transmission shaft 54 at the rear of the transmission housing 48 The driven pulley 52 attached to the portion of the shifting chamber and the circulating belt 53 wound around the driving pulley 51 and the driven pulley 52. The driving pulley 51 is an electric motor or the like (not shown). The movement of the belt 5 3 is changed by the sliding motion of the slider 5 6 which is slidable in the axial direction of the crankshaft 34. The driven belt 5 2 ' is adapted to drive the pulley 5 1 Let the winding radius of the belt 5 3 produce a change in φ to make the winding radius The opposite side of the drive pulley 51 is disposed between the driven pulley 52 and the transmission shaft 54. The other end side of the transmission shaft 54 is a disposition surface for the gear 50. An output shaft 57 having an axis parallel to the drive shaft 54 is rotatably supported by the crankcase main body 45 and the gear case 47, and the gear 50 is housed with the rotational power of the drive shaft 54. The deceleration is transmitted to the reduction gear set 58 of the output shaft 57. The one end portion of the output shaft 57 is inserted through the rear portion of the gear case 47 and protrudes from the rear left side of the gear case. The axle of the rear wheel WR 5, 9 is supported by the rear portion of the rocker arm 6 在 at the front end of the rocker arm 60, and is provided with a pair of support arms 6a, 60b. The support arms 60a, 60b are interposed therebetween: constitute the above-mentioned shifting A portion of the body 48 has a crankcase body 45 and a rear portion of the gear case 47. One of the support arms 60a is rotatably supported relative to the output shaft. The other support arm 60b Is coaxial with the above-mentioned shaft 57 and rotatably supported A support shaft 61 provided at a rear portion of the crankcase main body -11 - (9) 1266720. That is, the front end portion of the rocker arm 60 is rotatably supported by the transmission housing 48. The output shaft 57 is provided. One end of the support arm portion 60a protrudes from the rocker arm 60, and the projecting portion of the output shaft 57 projecting from the upper support arm portion 60a fixes the drive sprocket 62. On the other hand, along the edge On the left side of the traveling direction of the locomotive, the driven sprocket 63 is fixed to the vehicle 59 of the rear wheel WR, and the circulating chain 64 is wound around the drive sprocket 62 and the driven sprocket. Further, on the outer surface side ' of the front end of the support arm portion 60a, a sprocket case 65 for covering the drive sprocket 62 is attached. In the rear portion of the above-described transmission case 48, a pair of brackets 66 that extend upward are provided. The brackets 66 are supported at the rear end portion of the main pipe 20. As shown in Fig. 1, in the lower portion of the rear side of the transmission case 48, a pair of main stand shafts 6 7 are coaxially disposed, and the stand legs 68 are rotatably supported by the stand legs 68. . A horizontal tube 71 is disposed between the curved portions 20c of the two main bodies, and the bracket 60c_ for the shock absorber provided at the front portion of the horizontal tube 71 and the rocker arm 60 is provided with A rear shock absorber 72 that extends toward the front and rear axis. Next, referring to Fig. 2, the downstream end of the throttle body 74 is connected to the front side surface of the cylinder head 30. The oil tank 90A is disposed so as to straddle the two lower sides of the vehicle body frame F. At the upper end of the throttle body 74, the air filter is disposed in front of the engine sill or below the fuel tank 9 〇Α. The fuel injection valve 77 is attached to the throttle body 74. The jet -12-(10) 1266720 air cleaner 76A of the outer tube of the outer tube of the shaft 6 3 is formed by accommodating the filter element 149 in the filter housing 148. The filter housing 148 is configured to hold the filter cartridge 1 49 between the first housing member 150 and the peripheral portion of the second housing member 151 to move the filter housing 148. The inner zone is divided into a front clean room 152 and a rear clean room 153, and is combined with a bowl-shaped first case member 150 that opens toward the rear side and a bowl-shaped second case that opens toward the front. The body member 151 is composed of. The first case member 150 is provided with an outside air introduction pipe 1 5 4 that communicates with the clean room 152 to introduce the outside air from the front of the air cleaner 76B, and in the clean room 15 3. accommodating: an intake pipe 155° whose lower end is connected to the upstream end of the throttle body 74 via the second casing member 151, below the front portion of the first casing member 150 of the air cleaner 76A The arrangement is: a radiator 9 1 located in front of the engine EA for cooling the engine cooling water heated by the water-cooled engine EA. In the lower portion of the heat absorbing heater 91, a mounting arm portion 168 that protrudes toward the engine bracket 19a side of the vehicle body frame F is provided, and the mounting arm portion 168 is installed via the rubber 170. ... is supported by the bracket 169... provided on the engine bracket 19a.... On the upper portion of the radiator 91, a mounting arm portion 171 which protrudes toward the lower tube 19 side of the upper portion is provided, and the bracket 172 which is provided in the lower tube 19 is attached via a rubber (not shown). The support wrists 1 7 1... are supported. That is, the radiator 91 is supported by the low pipe 19 of the vehicle body frame F and the engine bracket 19a. In the lower portion of the first housing member 150 of the air cleaner 76A constituting a portion 13-(11) 1266720 of the filter housing 148, integrally provided with: for coming from the front The traveling airflow is guided to the deflector 165 of the radiator 9 1 side, and the deflector 165 is directed from the lower end of the front end of the filter housing 148 toward the side of the radiator 9 1 toward the oblique rear lower side. Tilt extension. The upstream side of the exhaust pipe 95 is connected to the rear side of the cylinder head 30 of the engine casing, and the downstream end of the exhaust pipe 95 is connected to the silencer 97 disposed on the right side of the rear wheel WR. In the fifth diagram, the head pipe 17 at the front end of the body frame F is provided with a lock mechanism 1 〇1 that can switch the locked state and the unlocked state of the steering handle 16 to the lock mechanism 1 〇 1. The operation is switched by the operation of the key cylinder lock 102 disposed at a position away from the lock mechanism 101. The locking mechanism 101 has a locking pin 104 that is detachably engageable with the steering shaft 103, which is connected to the steering handlebar 16 and the front fork 15. In a manner, it is rotatably coupled to the head pipe 17, and the locking mechanism 101 is disposed on the front side of the head pipe 17 'the support frame 1 〇 5 fixedly mounted on the front portion of the head pipe 17 is The lock pin 104 is held in such a manner that the vertical direction intersects the direction of the axis of the steering shaft 1 〇3. In the side wall portion of the hollow cylindrical shape of the steering shaft 110, an engaging hole 106 is provided, and when the steering shaft 103 is at a predetermined rotational position, the insertion hole is coaxially connected to the engaging hole 106. 7, is disposed at the front of the head pipe 17. The support frame 205 has a support plate portion 1 〇 5 a that faces from the front side toward the head pipe 17 and is movably inserted through the 14-(12) 1266720 support plate portion 10a 5a in the axial direction. One end of the locking pin 104 is inserted into the insertion hole 1〇7° toward the engaging hole 106. The other end of the locking pin 104 is provided with a protrusion extending outward in the radial direction. The portion 1 〇 4 a, by the spring 108 compressed between the support plate portion 1 〇 5 a and the crotch portion 〇 4 a of the support frame 105 , the lock pin 104 is biased toward one end portion thereof The direction of the engagement state of the engagement holes 1 〇 6 is released. The other end of the lock pin 104 is abutted against a cam U 0 rotatably supported by the support frame 105, the cam 1 1 0, as shown by the solid line in FIG. In the rotational position, the axial direction position of the lock pin 104 is set at a position where the one end portion is released from the engagement hole 1〇6 and is positioned in the insertion hole 107. The head pipe 17 is fixedly attached with a bracket 111 extending obliquely upward and upward. At the upper end of the bracket 111, a meter 112 disposed in front of a central portion of the steering handlebar 16 is mounted to support the headlight 113. The support _ member 1 1 4 is mounted on the upper portion of the bracket 1 1 1 . The cylinder 115 of the key cylinder lock 102 is attached to the bracket 1 1 1 in the vicinity of the meter 112, and is rotatably inserted in response to the rotation of the normal key 1 16 by the insertion rotation operation. In the cylindrical body 1 1 5 'in the outer surface portion of the rotor 1 17 , a pair of pins 1 1 8 and 1 1 9 spaced apart from each other in the axial direction are protruded. Between the locking mechanism 1 〇1 and the key cylinder lock 102, a link member 1 2 1 in which the intermediate portion is rotatably supported by the bracket 1 1 1 by the support shaft 1 2 0 is disposed. One end portion of the link member 1 2 1 is sandwiched between -15-(13) 1266720 and a pair of pins 1 1 8 and 1 1 9 provided in the rotor 1 17 . The long hole portion 1 22 provided at the other end portion of the link member 1 2 1 is inserted through the connecting pin 1 23, and the connecting pin 1 23 is implanted and fixed to the locking mechanism 10 at its eccentric position. 1 cam 1 1 0. When the key cylinder lock 1 0 2 is operated by the key 1 16 , the movement of the pair of pin bolts 1 18 and 1 18 in the circumferential direction by the rotation of the rotor 1 17 is allowed. The link member 1 2 1 is swung between the position φ shown by the solid line in FIG. 5 and the position indicated by the broken line, and the lock mechanism 1 0 1 is adapted to the swing of the link member 1 2 1 described above. And the cam 1 10 is rotated between the position indicated by the solid line in FIG. 5 and the position indicated by the broken line, whereby the locking pin 104 is disengaged from the steering shaft 103, and Between the positions where the steering shaft 1 0 3 is engaged, it moves toward the axial direction. That is, the rotor 117 of the key cylinder lock 1 〇 2 is coupled to the one end portion of the link member 1 2 1 so as to be swingable in response to the rotation of the rotor 117, and the locking mechanism 10 1. The lock Φ state and the unlocked state are switched in response to the swing of the link member 1 2 1 , and are coupled to the other end of the link member 1 2 1 . Next, referring to Fig. 1, the oil tank 90A, the air cleaner 76A, the power unit PA, and the vehicle body frame F are covered by a vehicle body casing 125 made of synthetic resin, and the vehicle body casing 125 is covered. The front portion of the head pipe 17 and the upper portion of the front wheel WF are covered, and the front outer casing 126 of the headlight 113 is attached, and the head pipe 17 and the oil tank 90A are covered from the rear side, and the center is connected to the front outer casing 126. The outer casing 127 is joined to the right and left sides of the front outer casing 126 to cover the left and right sides of the front of the passenger's foot - 16 - (14) 1266720 a pair of leg shields 128 ... for supporting the rider's feet The left and right pair of leg portions 129 (see FIG. 3) connected to the leg shields 128 are raised upward between the leg portions 1 2 9 and the rear portion of the center casing 1 2 7 The connected floor duct portion 1300, the side skirt portion 1 3 1 ... (see FIG. 3) that hangs downward from the outer edges of the two leg portions 1 29, respectively, and the rear portion of the vehicle body frame F The left and right sides, and the rear casing 133 joined to the leg portion 129 and the floor duct portion 130. The rear outer casing 1 32 is openably and closably provided with a two-pass type rider that allows a vehicle driver who is operating in the direction of the handlebar 16 to ride, and allows the rider behind the vehicle to ride. Use the seat cushion 133. The passenger seat cushion 133 is disposed further rearward than the oil tank 90A, and is connected to the rear portion of the center casing 127 by a central casing 127 that covers the oil tank 90A from the rear side of the vehicle body casing 125. The floor duct portion 130 and the rear outer casing 132 provided with the above-described passenger seat cushion 133 are formed as a slightly U-shaped cross-foot space 135 from the side surface, and are formed as the tank 90A disposed on the front side II and The air cleaner 76A and the passenger seat cushion 133 on the rear side are disposed, and the radiator 91, the two lower tubes 18 to the two body tubes F and the two lower tubes 19 are also disposed in the above-mentioned cross-foot space. 1 3 5 is ahead. In the sixth and seventh figures, below the passenger seat cushion 133, a storage box 140 is disposed, and the storage box 140 can be opened and closed by the bottom plate 141 of the passenger seat cushion 133. The upper end opening portion is closed, and the storage box 140 is supported by the seat cushion rails 23 and the rear tubes 24, . The storage box 140 is disposed above the rear shock absorber 72 provided between the horizontal pipe 71 of the vehicle body frame F and the rocker arm 60, and is disposed at the bottom wall portion 140a of the storage compartment 140-17-(15) 1266720. The accommodation recessed portion 142 of the rear shock absorber 72 is housed so that the axis of the rear shock absorber 72 is positioned higher than the lower surface portion of the bottom wall portion 140a. Further, as shown in FIG. 7, the accommodating recessed portion 42, as shown in FIG. 7, is disposed at a central portion in the width direction of the storage compartment 144, and the accommodating recessed portion 142 allows a half-cover type (full cover type including a hood) The helmet 143 is in a state in which the goggles 144 are raised, and the helmet 143 is housed in the storage box 140. Next, the action of the first embodiment will be described. The body casing 1 25 forms a cross-foot space 1 3 5 which is slightly U-shaped as viewed from the side, and the foot space 1 3 5 is a configuration. The head pipe 17 at the front end of the body frame F and the seat cushion 1 3 3 of the vehicle driver who is used to operate the steering handlebar 16 steerably supported by the head pipe 17 The vehicle body frame F is provided with a pair of left and right lower pipes 1 8 extending from the head pipe 17 toward the front and rear sides of the footrest space 135, and disposed on the lower pipe 18... a left and right φ pair of low tubes 1 9 ... extending from the head pipe 17 toward the oblique rear lower portion, and extending rearward from the lower ends of the low tubes 1 9 ..., and connecting the lower ends of the two lower tubes 1 8 ... A pair of supervisors on the left and right sides of the middle part 20··. The main pipe 20 extends from the lower end of the lower pipe 19 toward the obliquely rear upper portion, and connects the lower end of the lower pipe 18 to the front half inclined portion 20a of the intermediate portion, the rear half inclined portion 20b extending obliquely rearward and downward, and The curved portion 20c that is swellably curved upward and connects the rear end of the front half inclined portion 20a and the front end of the rear half inclined portion 20b is integrally connected. With the configuration of the body frame F, the main pipe 20 is formed to extend from the lower end of the low pipe 19 toward the upper rear obliquely, and to be bent over the upper side 18- (16) 1266720 Since the shape is extended, the space below the main pipe 20 can be increased, and the degree of freedom of the shape of the engine EA can be increased, and the intermediate curved portion 20c of the main pipe 20 can be appropriately flexed to achieve the most appropriate operability. In the vicinity of the lower end of the lower pipe 18... and in the front half inclined portion 2〇a of the main pipe 20..., the first engine suspension 3 2... for supporting the engine EA is provided, so that the lower pipe is used The engine EA is supported by the main pipe 20···, and the engine EA can be efficiently and reliably supported by the vehicle body frame F. The front ends of the pair of left and right seat cushion rails 23, which are used to support the passenger seat cushions 133 and are inclined obliquely upward and upward, are respectively joined to the front half inclined portions 20b of the two main pipes 20... In the part, the angle formed by the main pipe 20···and the seat cushion rails 23 can be adapted, and the seat cushion rails 23 can be joined to the main pipe 20... and the bins are sufficient for balance. good. Further, the main pipe 20··· is composed of a square tube, and the cross-sectional shape of the square tube is a right-angled quadrilateral having a longer vertical direction than the horizontal direction, so that the rigidity of the main pipe 20... is high in the vertical direction. Flexibility in the left and right direction for better maneuverability. The front portion of the rocker arm 60 for supporting the rear wheel WR at the rear portion is supported by the transmission housing 48 so as to be vertically oscillating, and is disposed between the vehicle body frame F and the rocker arm 60. Above the 72, a storage box 140 is disposed below the passenger seat cushion 133 on which the driver of the vehicle is seated, and a housing recess 142 is provided in a lower portion of the bottom wall portion 140a of the storage box 140. The accommodating recess 142 accommodates the rear shock absorber such that the center axis of the rear shock absorber 72 is located above the lower portion of the bottom wall portion 14 〇 & 72, so that the interference with the 72 can be avoided, and the bottom wall portion of the storage box 140 can be placed at a lower position, so that the storage phase 14 〇 ensures that a radiator 91 is disposed in front of the engine EA. The air filter 76A' disposed above the f is disposed integrally with the air damper 76A housing 148 for guiding the deflector 15 extending from the front φ airflow toward the radiator 91 side. 6, so the number of parts can effectively guide the airflow to the radiator and cool the radiator 9 1 ° The foot space 1 3 5 'is disposed at the rear of the tank 9 0 A, the empty 76A, and the radiator 91. Therefore, the speed of the tank 90A and the air filter 76A can be ensured at the rear of the tank. Large components' allow for the guidance of the baffle 1 5.6. φ The locked state of the steering handlebar 16 and the locking mechanism 1 〇1 for unlocking the lock, and the key cylinder lock 102 for causing the switching operation force to act on the 101 are separated from each other, and the rotor of the mine 102 1 1 7 is connected: one end portion of the link member 1 2 1 that swings in response to the rotor 1 17 , and the locking roll is such that it is decoupled in response to the swing of the link member 1 2 1 And the manner of unlocking is connected to the other end of the link structure. The operating force from the key cylinder lock 1 〇 2 sets the capacity with the rear shock absorber 1 4 0 a. The filter on the side of the filter 91 can reduce the side of the 91 side, the air filter type locomotive, the radiator 91: the flow effect is more: the state is cut: the locking mechanism 匙 key cylinder lock rotation Η冓ί ο ί, ϊ switch to the lock of the I link member -20- (18) 1266720 1 2 1 of the lock 121, and is transmitted to the 丨〇丨 side of the lock mechanism, and can reduce the number and simply constitute the key cylinder The operation force transmission mechanism of the lock 1 〇 2 and the lock mechanism 1 , can make the operation of the key cylinder lock 1 〇 2 feel, and the commercial property can be improved. The key cylinder lock 102 is disposed in front of the steering wheel handle 16 in the vicinity of the meter 1 1 2 so that the vehicle driver can easily operate the key lock 102. Φ Fig. 8 is a view showing a quick gram type locomotive according to a second embodiment of the present invention. Fig. 9 is a longitudinal sectional view showing an enlarged front portion of a skating type locomotive. The first drawing is omitted. The power unit view of the state of the gas system is shown in Fig. 1 is a view from the direction of the arrow 1 1 of the first drawing. The first drawing is a view from the direction of the arrow 1 2 of the first drawing, and the first is the first The cross-sectional view of Fig. 3 to Fig. 3 is the same as that of the first embodiment, and the detailed description is omitted. First, in Figs. 8 and 9, the vehicle body F' of the scooter type locomotive has the same structure as that of the first embodiment described above, and the vehicle body: F' is equipped with a rear wheel WR for driving. The power unit PB is composed of a four-stroke engine EB and a stepless speed changer that is used to shift the engine EB. Referring to Figures 10 to 12, the engine cymbal is, for example, a V-shaped structure of a water-cooled two-cylinder having a cylinder axis in which the crankcase 28 is slightly inclined forwardly forward and upward, from the crankcase 28 toward The extended front bank BF and the rear bank BR which forms V with the front bank BF and extends upward from the crankcase 28; the regularity between the parts and the plane view on the side of the cylinder, 3 The frame frame of the drawing should be made into a single square, each gas - 21 - (19) 1266720 cylinders BF, BR, which are respectively equipped with: cylinder block 2 9F, 29R combined with the crankcase 28, in the crankshaft On the opposite side of the tank 28, cylinder heads 30F, 30R coupled to the cylinder blocks 29F, 29R, and cylinder head covers 31F, 31R coupled to the tops of the cylinder heads 30F, 30R. In the vicinity of the lower end of the lower tube 18 of the body frame F, and the first engine suspension 32 provided in the front half inclined portion 20a of the above-mentioned two main pipes 20... is supported by the engine EB in the front and rear cylinders The upper portion of the crankcase 28 between BF and BR and the rear cylinder BR are disposed between the curved portions 20c of the two main pipes 20·. The second engine suspension 33, which is locked at the lower end of the engine bracket 19a, which is joined to the lower end of the low pipe 19, is supported by a lower portion of the crankcase 28 located below the front bank BF. In this way, the engine EB can be supported on the two main pipes 20··· with a relatively rigid portion, and the first engine suspension 32·. The first half inclined portion 20a of the two main pipes 20... is provided by the locks ' of the pair of bolts 26 of the extension lines of the center lines of the lower pipes 1 8 ... on both sides. The crankcase 28 of the engine EB is supported by the first engine suspension 3 2... by the locking of the bolts 27 disposed on the extension line of the center line of the lower pipes 18, ..., which is efficient and comparable The crankcase 28 is supported by the first engine suspension 32··· with high rigidity. In the thirteenth embodiment, the pistons 35 of the two cylinders BF and BR are connected to the crankshaft 34 that is rotatably supported by the crankcase 28 via the connecting rods 36. A crank pin 34b between the two crank arms 3 4 a, 3 4b. -22- (20) 1266720 is provided in the cylinder heads 30F and 30R of the two cylinders BF and BR, respectively. An intake valve and an exhaust valve (not shown) are used to open and close the intake and exhaust valves. And a part of the valve device is rotatably supported between the camshaft 4 of the two cylinder heads 30F, 30R, and the crankshaft 34 between the crankcase 28 and the AC generator 39. The timing transmission 42 is provided, and the rotational power of the crankshaft 34 is decelerated by the timing transmission 42 and then transmitted to the camshaft 4b. A pair of brackets 66, which are provided at the rear portion ' of the transmission case 48 coupled to the crankcase 28, and which extend upward, are supported by the rear end portions of the main pipe 20. Between the horizontal pipe 71 that is placed between the curved portions 20c of the two main pipes 20, and the shock absorber bracket 60c provided at the front portion of the rocker arm 60, there is provided an axis having a front-rear extending axis. Rear shock absorber 72. Referring to Fig. 9, the intake system 73 of the engine EB is provided with a downstream end connected to the one side of the cylinder heads 30F, 30R of the cylinder BF > BR between the front and rear exhaust cylinders BF, BR. The throttle bodies 74F and 74R are respectively connected to the intake Φ tubes 75F and 75R of the upstream ends of the two throttle bodies 74F and 74R, and the air filters disposed in common to the intake ducts 75F and 75R and disposed above the front exhaust cylinder BF. The cleaner 76B is provided with fuel injection valves 77F and 77R in the respective throttle bodies 74F and 74R. The air cleaner 76B is constituted by a filter cartridge 79 housed in the filter housing 78. The filter case 78 is such that the peripheral edge portion of the second case member 81 is held between the peripheral portions of the first and third case members 80 and 82, and is coupled upward: The opened bowl-shaped first case member 80 integrally has a second partition wall 8 1 a for separating the inside of the filter case 78 into the upper clean room 8 3 and the lower clean room 8 4 -23- (21) (21) 1266720 The housing member 8 1 and the bowl-shaped third housing member 82 opened downward; the filter is from the upper side, that is, the side of the clean room 8.3 The filter core 79 is detachably mounted to the flow hole 85 provided in the partition wall 8 1 a, and the intake pipe 7 5 F, 7 5 R extends into the clean room 8 4 and is then connected to the filter housing. The air intake hole 860 that communicates with the uncleaned chamber 8 3 is a side portion of the third case member 82 that is provided in the filter case 78. The filter case 78 of the air cleaner 76B is formed such that the length in the front-rear direction is larger than the length in the up-and-down direction, and the oil tank 90B disposed above the two lower pipes 18... above the air cleaner 76B is The front portion supported by the vehicle body frame F is also the two lower tubes 18. The top wall portion of the filter housing 78, that is, the top wall portion 82a of the third housing member 82, is formed to face the bottom wall portion 90Ba of the oil tank 90B and extends slightly horizontally forward and backward. The partition wall 8 1 a of the second casing member 81 is also formed to extend slightly horizontally toward the front and rear. A radiator 9 1 for cooling the engine cooling water heated by the water-cooled engine EB is disposed in front of the front exhaust cylinder BF of the engine EB and below the air cleaner 76B. The radiator 91 is a low pipe 19··· supported by the vehicle body frame F. The radiator 91, the oil tank 90B, and the air cleaner 76B are disposed further forward of the footrest space 135 formed by the vehicle body casing 125. And the lower portion of the filter housing 78 of the air cleaner 76B, that is, the first housing member 80, is integrally provided for guiding the traveling airflow from the front to the side of the radiator 91. The deflector 92, the guide 24-(22) 1266720 flow plate 92 extends obliquely from the lower end of the front end of the filter housing 78 toward the side of the heat sink 91 obliquely rearward and downward. In the rear portion of the second housing member 81 of the filter housing 78 of the air cleaner 76B, as shown in Fig. 9, 'replacement of the filter housed in the filter housing 78 The filter center replacement window portion 1 3 6 ' of the filter core 7 9 is disposed to face the above-mentioned footrest space 1 3 5 side 'the filter center replacement window portion 1 3 6 ' is closed by the openable and closable cover member 137 . The top wall portion 82a' of the filter housing 78 is formed such that it faces the bottom wall portion 90B of the tank 902B and extends slightly horizontally toward the front and rear of the filter filter. 7 9, the filter center replacement window portion 136 may be substantially horizontally drawn, and disposed in the filter case 78 in a substantially horizontal posture toward the top wall portion 820a. In the above-described filter-replacement window portion 136, the floor duct portion 1300 is provided with an opening portion that can open and close the lid member 137 and the insertion/removal operation of the filter cartridge 7.9. . The exhaust system 93 of the engine EB is provided with an exhaust pipe 94 that connects the upstream end to the lower side surface of the cylinder head 30F of the front exhaust cylinder BF, and extends rearward of the power unit PB, and connects the upstream end. An exhaust pipe 95 on the rear side surface of the cylinder head 30R of the rear exhaust cylinder BR, a collecting exhaust pipe 96 that commonly connects the downstream ends of the exhaust pipes 94 and 95, and a right exhaust pipe 96 disposed on the right side of the rear wheel WR are connected The exhaust pipe 94 of the front exhaust cylinder BF of the exhaust pipe 96 is bent downward from the cylinder head 30F to have a slightly C-shaped shape, and extends rearward through the lower side of the power unit pb. The rear side of the PB is raised toward the right side of the rear wheel WR, and the lower surface portion of the bottom wall portion 48a of the transmission case 48 constituting a part of the casing of the power unit PB is provided at -25-(23) 1266720. A housing recess 98 for accommodating at least an upper portion of the exhaust pipe 94. As shown in Fig. 3, the accommodation recessed portion 9 8 is disposed between the crank arm 34a on the drive pulley 51 side of the crankshaft 34 and the drive pulley 51, whereby the drive pulley 5 1 having a larger diameter can be avoided. Interference is caused, and the housing recessed portion 98 can be formed in a proper shape in the lower surface portion of the bottom wall portion 48a of the transmission case 48. The exhaust pipe 95 of the rear exhaust cylinder BR is formed to be inserted from the left side of the crankcase 28 so as to be parallel to the exhaust pipe 94 of the front exhaust cylinder BF at a position further rearward than the main leg shaft 67. The rear of the shifter housing 48. That is, the exhaust pipe 95 of the rear exhaust cylinder BR extends from the cylinder head 30R toward the crankcase 28 and the left side of the transmission housing 48, and penetrates the rear portion of the transmission housing 48 at the above-mentioned main leg. Further to the rear of the frame shaft 67, it is formed in parallel with the above-described exhaust pipe 94 of the front bank BF. The collection exhaust pipe 96 is connected in common to the downstream ends of the two exhaust pipes 94 and 95 arranged side by side on the rear side of the power unit PB, and the downstream end of the collective exhaust pipe 96 is connected to the extinguishing sound. The upstream end of the device 97. The head pipe 17 of the vehicle body frame F is provided with a lock mechanism 110 that can switch the lock state of the steering handlebar 16 and the unlock state, and the lock mechanism 1 〇1 is the same as the first embodiment. In response to the swinging motion of the link member 121, the link member 121, in turn, switches the locking mechanism 1 〇1 in response to the operation of the key cylinder lock 102 disposed at a position away from the locking mechanism 110. Steering the handlebar 16 and unlocking the -26- (24) 1266720 state. Below the passenger seat cushion 133, a floor 140 is provided in which the upper end opening portion is opened and closed by the bottom plate 141 of the passenger mat 133, and is disposed in the bottom wall portion 140a of the storage box 140. The housing 142 is provided to receive the rear shock absorber 72 such that the axis of the rear shock absorber 72 is located above the lower surface portion of the bottom wall portion 1400a. With the second embodiment, as in the first embodiment described above, the space below the main pipe 20 is made larger, and the engine EB-like degree of freedom can be increased, and the middle portion of the main pipe 20 is appropriately appropriately bent. Since it can be flexed, it is possible to optimize the operability, and the connection with the 18 is a strong rigidity, and the engine EB is supported by 20···, and the engine EB can be efficiently and surely supported. In the vehicle body F°, the dry-shaped shape between the storage box 140 and the rear shock absorber 72 can be avoided, and the bottom wall portion 140a of the storage box 140 can be set lower, so that the storage compartment 1 40 can be ensured to be larger. Containing capacity. On the other hand, the radiator 91 disposed on the front side of the engine EB extends the deflector 92, and is integrally connected to the filter body 7 of the air cleaner 76B. Therefore, the number of parts can be reduced, and the traveling airflow can be effectively performed. The heat sink 9 1 can be cooled to the side of the heat sink 9 1 . The cross-foot space 135 is disposed at a position further than the oil tank 90B, the air heater 7 6B, and the radiator 91. Therefore, in the speed Keda car, the capacity of the oil tank 90B and the air cleaner 76B can be ensured. The recess of the trunk box is in the shape of the 20c. The main frame of the tube is guided by the guide frame. The filter is cooled. -27- (25) 1266720 The rear of the 91-620 will not be configured. The components can make the flow guiding effect of the deflector 92 better. Moreover, the number of parts of the operation force transmitting structure between the key cylinder lock 102 and the locking mechanism i 可以 can be reduced, and can be simply configured, and the operation of the key cylinder lock 102 can be made regular. Can improve its commerciality. The front exhaust red φ BF of the V-shaped engine EB mounted on the vehicle body frame F has a cylinder block 29F and a cylinder head 30F whose cylinder axis is inclined forward, and is on the right side of the crankcase 28 of the engine EB. In combination with the transmission housing 4 8, the transmission housing 48 is for receiving a stepless transmission μ which constitutes the power unit PB together with the engine eb, and the upstream end is connected to the cylinder head 30F which is inclined forward by the axis. The exhaust pipe 94 extends rearward through the lower portion of the power unit ,, and a lower portion of the bottom wall portion 48a of the transmission case 48 is provided with a housing recess that accommodates at least an upper portion of the exhaust pipe 94. 9 8. ® The exhaust pipe 94 can then be placed above it in a manner closer to the power unit pb, thereby ensuring the lowest ground clearance, while the engine EB can be placed in a lower position, while the low pedal type can be The center of gravity of the vehicle's Scooter locomotive is reduced. The exhaust pipe 915 connected to the rear side surface of the cylinder head 30R provided in the rear exhaust cylinder BR of the engine EB is a main member that rotatably supports the main leg 68 and is disposed at a position corresponding to the rear portion of the power unit PB. Further to the rear of the tripod shaft 67, it is connected to the cylinder head 3〇f of the front bank BF, and is arranged side by side with the exhaust pipe 94 passing through the lower side of the above-described power unit PB, which is formed by bending -28-(26) 1266720. The left side of the crankcase 28 penetrates into the rear of the transmission housing 48. Thereby, the arrangement space of the exhaust pipe 915 located behind the rear cylinder B R can be secured, and the space behind the rear cylinder BR can be effectively utilized for other purposes. The exhaust pipe 95 can be passed above the lowest part of the engine EB, and it is easy to ensure the minimum ground clearance, and the center of gravity of the Scooter type locomotive can be made lower. The V-shaped engine EB is supported by the first engine suspension 32··· between the front and rear exhaust cylinders BF and BR, and is mounted on the vehicle body frame F, and the rear cylinders BR are disposed in two. Since the main portion 20··· is between the curved portions 20c, the rigid portion of the main pipe 20 is supported between the front and rear cylinders BF and BR of the V-shaped engine EB. The V-shaped engine EB is efficiently mounted on the vehicle body frame F. The air cleaner 76B that is a part of the intake system 73 is connected to the engine EB mounted on the vehicle body frame F, and is disposed below the oil tank 90B. The filter housing 78 of the air cleaner 76B is The surface of the cross-leg foot space 1 3 5 is provided with a filter center replacement window portion 1 3 for replacing the filter filter core 7 received in the filter housing 7 8 when the air filter is replaced. When the filter cartridge 79 of the cleaner 76B is in a state in which the filter replacement window portion 136 is opened, the filter cartridge 7 can be easily replaced from the footrest space 135 side. The top wall portion 82a' of the filter housing 78 is formed to extend substantially horizontally toward the front and rear toward the bottom wall portion 90B of the tank 90B, and the filter cartridge 7 is capable of filtering from the filter. The core replacement window portion 136 is substantially horizontally extracted, and is disposed in the filter housing 29- (27) 1266720 cleaner housing 78 in a substantially horizontal posture toward the top wall portion 8 2 a, so that it can be efficiently The oil tank 90B and the air cleaner 76B are disposed to ensure the capacity thereof. Further, the filter case 78 of the air cleaner 76B is formed such that the length in the front-rear direction is longer than the vertical direction. Therefore, the air cleaner 7 6 B can be efficiently disposed and the capacity thereof can be sufficiently ensured. Figure 14 is a side view of a Scooter type locomotive according to a third embodiment of the present invention, and Fig. 15 is a longitudinal sectional side view showing the front portion of the locomotive 'φ in the first and second embodiments. The parts corresponding to the examples are denoted by the same reference numerals and are only illustrated, and the detailed description thereof is omitted. The body frame F of the scooter type locomotive has the same structure as the above-described first and second embodiments. In the vehicle body frame F, a power unit PC is mounted to drive the rear wheel WR, and the power unit PC is It consists of a four-stroke engine EC and a stepless speed change μ that shifts the output of the engine EC. The engine EC is, for example, a water-cooled single cylinder, and includes a crankcase 28 having a cylinder axis extending upward and downward, a cylinder block 29 extending forward from the curved II axle box 28, and a crankshaft. The cylinder head 30, which is coupled to the cylinder block 209, on the opposite side of the tank 28, and the cylinder head cover 3 结合 coupled to the top of the cylinder head 30. In the vicinity of the rear end of the lower tube 18 of the vehicle body frame F, and the first engine suspension 3 2··· provided in the front half inclined portions 2〇a of the two main pipes 20··· supports the crankcase 28 The upper part. On the other hand, the second engine suspension 33··· mounted on the lower end of the engine bracket 19a, which is engaged with the lower end of the lower pipe 19 to, supports the lower portion of the front side of the crankcase 28. A pair of brackets -30-(28) 1266720 66..., which are disposed at the rear of the transmission case 48 coupled to the crankcase 28, are supported at the rear end portion of the main pipe 20. Further, between the horizontal pipe 7 1 that is placed between the curved portions 20c of the two main pipes 2, and the suspension bracket 60c that is provided at the front of the rocker 60, there is provided A rear shock absorber 72 that extends toward the front and rear axis. At the upper side of the cylinder head 30 f, the downstream end of the throttle body 74 is connected to the upstream end of the throttle body 74, and an air cleaner 76C is disposed. The air cleaner 76C is disposed below the oil tank 90C. Above the engine EC φ , the oil tank 90C is a two lower pipe 18 ... disposed to span the vehicle body frame f, and a fuel injection valve 77 is mounted to the throttle body 74. The air cleaner 76C is constituted by a filter cartridge 159 housed in the filter housing 158. The filter housing 158 is a bowl-shaped first housing member 160 that opens upwardly, a bowl-shaped member that opens downwardly and is coupled to the first housing member 160 from above. 161, and open to the front into a bowl shape, the filter filter core 159 is sandwiched between the first and second housing members 1 60, 161, and coupled to the first and second housing members xin 160, The third housing member 162 of the 161 is configured, and the inside of the filter housing 158 is partitioned into an uncleaned chamber 163 behind the filter cartridge 159 and in the clarifier filter 159. Clean room 164 in front. In the upper portion of the third case member 162, in the manner of facing the footrest space 135, the external air introduction pipe 165 communicating with the uncleaning chamber 163 is connected via the second case member 丨6 The intake pipe 166 whose downstream end is connected to the upstream end of the throttle body 74 is housed in the clean room 164. The radiator 91 for cooling the engine cooling water heated by the water-cooled engine EC is disposed further forward than the engine EC, and the -31 - (29) 1266720 radiator 91 is supported by the vehicle body. The low tube of the frame F 19···. The lower side of the cylinder head 30' of the engine EC is connected to an upstream end of the exhaust pipe 94 extending rearward, and the exhaust pipe 94 is formed to extend rearward of the power unit PC, and The rear of the power unit PC rises toward the right side of the rear wheel WR, and is provided at a lower portion of the bottom wall portion 889a of the transmission case 48 that constitutes a part of the casing of the power unit PC for housing At least the upper portion of the exhaust pipe 94 accommodates the recess 98, and the downstream end of the exhaust pipe 94 is connected to the silencer 97 disposed on the right side of the rear wheel WR. The head pipe 17 at the front end of the body frame F is provided with a locking mechanism 1 0 that can be switched to the locked state of the steering handle 16 and the unlocked state, and the locking mechanism 1 〇1 is the first Similarly to the second embodiment, it is switched in accordance with the swinging motion of the link member 1 2 1 due to the operation of the key cylinder lock 102 disposed at a position away from the lock mechanism 110. It becomes the locked state of the steering handlebar 16 and the unlocked state. Below the passenger seat cushion 133, a storage compartment 140 in which the upper end opening portion is closed and closed by the bottom plate 141 of the passenger seat cushion 133 is disposed, and the bottom of the storage compartment 140 is closed. The wall portion 14A is provided with a housing recessed portion 142 that accommodates the rear portion such that the central axis of the rear shock absorber 72 is located above the lower surface portion of the bottom wall portion 140a. Shock absorber 72.

According to the third embodiment, as in the first and second embodiments described above, if the space below the main pipe 20 is made larger, the shape degree of freedom of the engine EC-32-(30) 1266720 can be increased and If the middle bend of the main pipe 20 is made larger, the most appropriate operability can be achieved, and the connection with the lower pipe is a part with a strong rigidity to support the engine EC 20... And the support of the engine EC to the vehicle body frame can prevent the three shapes between the storage box 140 and the rear shock absorber 72, and can set the bottom wall portion 140a of the storage box 140 to be more seven, so the storage box 1 40 Can ensure greater capacity. The number of parts can be reduced, and the operation force transmitting mechanism between the key cylinder locks 102 and the mechanism 1 〇 1 can be simply constructed, and the operation of the key S 1 02 can be made to have a regular feeling, and the commerciality can be improved. The embodiments of the present invention have been described above, and the present invention is not limited to the embodiments, and various design changes can be made without departing from the scope of the invention. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a side view of a scooter type locomotive of the first embodiment. Fig. 2 is an enlarged longitudinal view of the front portion of the Scooter type locomotive. Figure 3 is a front view of the engine. Figure 4 is a 4-to-4 line enlarged cross-sectional view of the second diagram. Fig. 5 is a partial g-sectional view showing an enlarged view of the vicinity of the handlebar locking device. Figure 6 is a vertical view of the rear of the Scooter locomotive. Figure. 2 0 c 18"· Supervisor F ° Informed position Locking cylinder lock The above-mentioned type of side surface side side -33- (31) 1266720 Fig. 7 is a sectional view of line 7-7 of Fig. 6. Fig. 8 is a side view of the scooter type locomotive of the second embodiment. Fig. 9 is a longitudinal sectional side view showing the front portion of the Scooter type locomotive in an enlarged manner. Fig. 10 is a plan view of the power unit in a state in which the intake system is omitted. Fig. 11 is a view of the drawing viewed from the direction of the arrow 11 of the first drawing. Fig. 12 is a view seen from the direction of the arrow 12 in Fig. 10. Fig. 13 is a sectional view taken along line 1 3 - 1 3 of Fig. 8. Fig. 14 is a side view showing the scooter type locomotive of the third embodiment. Fig. 15 is a longitudinal sectional side view showing the front portion of the Scooter type locomotive in an enlarged manner. [Main component symbol description] 15 : Front fork • 1 6 : Steering handlebar 17 : Head pipe 18 : Lower pipe 1 9 : Low pipe 20 : Main pipe 20a : Front half inclined portion 2 0b : Rear half inclined portion 20c : Bending portion 2 3 : Cushion Track -34- (32) 1266720 32 : Engine Suspension 1 33 : Seat Cushion 1 3 5 : Span Space BF: Front Cylinder BR: Rear Cylinder EA, EB, EC: Bow | : car body frame φ WF : front wheel

Claims (1)

(1) 1266720 X. Patent application scope 1. A speed locomotive locomotive is provided on a vehicle body frame in a manner of steerably supporting a front fork (15) for supporting a front wheel (WF). The head tube (17) at the front end and the seat cushion for the vehicle driver who is used to drive the steering handlebar (16) connected to the upper portion of the front fork (15) (133) Between the two, there is a skating type locomotive having a slightly U-shaped cross-foot space (135) viewed from the side, and is characterized in that: P the above-described vehicle body frame (F) is provided with: In front of 1 3 5 ), a pair of right and left lower tubes (18) extending obliquely rearward and downward from the head tube (17) are disposed below the lower tube (18), and from the head tube (17) a pair of left and right lower pipes (1 9) extending obliquely downward and downward, and extending rearward from the lower pipe (19), and connecting the lower ends of the two lower pipes (18) to the left and right of the intermediate portion a pair of main pipes (20); the above-mentioned main pipe (20) extends from the lower pipe (19) toward the oblique rear upper surface #, and the lower pipe is connected to the intermediate portion (1) 8) a front half inclined portion (20a) at a lower end, a rear half inclined portion (20b) extending rearward and downward obliquely, and a front end inclined portion (20a) and a rear end inclined portion of the front half inclined portion (20a) The curved portion (20c) to which the front ends of (2 Ob) are connected is integrally connected. 2. The scooter type locomotive of claim 1, wherein the lower half of the lower tube (18) and the front half inclined portion (20a) of the main tube (20) are provided for supporting Engine suspension (32) for the engine (EA, EB, EC). -36- (2) 1266720 3 · The quick-kilda type locomotive of the first application of the patent scope, in which a pair of left and right seat cushions extending obliquely upward and upward are supported by the above-mentioned riding seat cushion (133) The front ends of the rails (23) are respectively joined to the front portions of the rear half inclined portions (20b) of the two main pipes (20). 4. The quick-kilda type locomotives of claim 2, which have mutual mutual The V-shaped engine (EB) of the V-shaped front and rear cylinders (BF, BR) is supported by the engine suspension (φ) between the front and rear cylinders (BF, BR). The method is mounted on the vehicle body frame (F), and the rear cylinder (BR) is disposed between the curved portions (20c) of the two main pipes (20). 5 · The speed of the first item of the patent application range The locomotive of the type, wherein the main pipe (20) is composed of a square tube, and the cross-sectional shape of the square tube is a right-angled quadrangle whose longitudinal direction is longer than the left-right direction. 37-