JP2007038708A - Rocking tricycle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To take environment into consideration while miniaturizing a rear vehicle body by effectively disposing and supporting functional parts of the rear vehicle body. <P>SOLUTION: In the tricycle, the rear vehicle body 18 connected to the rear part of the front vehicle body is mounted to the right and left of the front vehicle body in a freely rocking manner, the rear vehicle body 18 is covered with an integral cover 53, and the engine 76, rear wheels 16, 16 driven by the engine 76, and an exhaust device 52 of the engine 76 are provided in the cover 53. A cylinder part 93 of the engine 76 is forwardly inclined and disposed in the cover 53, a catalyst pipe 107 for exhaust purifying and a muffler 111 are provided on the exhaust device 52, and a fuel injection valve 91 supplying fuel and a throttle body 96 are disposed in the engine 76. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an improvement of a swinging tricycle.

A conventional rocking tricycle is known in which a rear vehicle body is provided with a cover (see, for example, Patent Document 1).
Japanese Utility Model Publication No. 62-6952

  In FIG. 1 of Patent Document 1, the rear vehicle body 3 including a pair of left and right rear wheels 19 is swung left and right at the rear of the front vehicle body 2 including the front wheel 4, the handle 5, the low floor type floor 6 and the seat 8. A freely mounted oscillating tricycle 1 is described.

  Further, in FIG. 5 of Patent Document 1, a cover 20 is provided on the rear vehicle body, and in this cover 20, a power unit 12 including an engine 13 and a transmission case 14, a carburetor 16, an air cleaner 17, a muffler 15, and left and right rear parts. The wheels 19, 19 are accommodated, inside the left and right rear wheels 19, 19, partition plates 24, 24 that isolate the rear wheels 19, 19 and the space between them are arranged to extend in the front-rear direction, and the air cleaner 17 It is described that the partition plate 26 is arranged so as to extend in the front-rear direction between the muffler 15 and the muffler 15.

  As shown in FIG. 3 of Patent Document 1, the cover 20 includes a front plate 21 that covers the front of the engine 13, a center plate 22 that extends rearward from the front plate 21 and has a rear end bent obliquely downward. The center plate 22 includes side plates 23 and 23 (see FIG. 5) that extend downward from the left and right sides of the center plate 22 and cover the upper outer sides of the rear wheels 19 and 19. These members are respectively attached to the power unit 12 and separated from each other. As shown in FIG. 4, the plates 24, 24 are attached vertically to the transmission case 14 and the upper part of the cover 30.

  As shown in FIG. 3 of Patent Document 1, since the cylinder portion of the engine 13 is arranged almost upright, the position of the central portion 22 of the cover 30 is increased, and the height dimension of the rear vehicle body 3 is increased. In recent years, environmental considerations are also expected for small swing tricycles.

  Furthermore, since the lower part of the cover 30 is attached to the front part and the rear part of the power unit 12, it is not easy to attach the cover 30 and it is necessary to ensure the rigidity of the cover. Furthermore, from the necessity of improving the performance of each functional component, it is desired to efficiently arrange and install the functional components.

  An object of the present invention is to improve the swing tricycle, to make the rear vehicle body more compact and to consider the environment by effectively arranging and supporting the functional components of the rear vehicle body.

  According to the first aspect of the present invention, the rear vehicle body connected to the rear portion of the front vehicle body is attached to the front vehicle body so as to be swingable left and right, the rear vehicle body is covered with an integral cover, and the engine, In a tricycle equipped with an engine driven rear wheel and an engine exhaust device, the cylinder portion of the engine is inclined forward in the cover, and the exhaust device is provided with a catalyst chamber and a sound deadening chamber for exhaust purification. A fuel injection valve for supplying fuel into the engine and a throttle body are arranged.

  The space above the engine can be used effectively due to the forward tilt of the cylinder. In addition, the fuel injection valve and the throttle body can accurately control the amount of fuel and air supplied to the combustion chamber of the engine, and in addition to this, the exhaust gas can be made cleaner by the catalyst chamber. It becomes possible. Furthermore, since the engine, the rear wheel, the catalyst chamber, the silencer chamber, the fuel injection valve, and the throttle body are in an integral cover, the above-mentioned parts can be efficiently protected together and the appearance can be improved.

The invention according to claim 2 is characterized in that a radiator is arranged in the cover.
Even when the running wind is hard to hit the engine in the cover, the engine is sufficiently cooled by allowing the running wind to strike the radiator.
Further, since the engine and the radiator are arranged in the cover, the radiator hose connecting the engine and the radiator is shortened.

  The invention according to claim 3 is an oscillating tricycle in which the rear vehicle body connected to the rear portion of the front vehicle body is attached to the front vehicle body so as to be swingable left and right, and an engine that drives the rear wheel to the rear vehicle body; A plurality of functional parts provided above the engine are arranged, and a cover that covers the engine and the plurality of functional parts is fixed to the engine with a mounting stay, and the functional stay is partitioned in a plan view. It is characterized by having been arranged in.

  If the mounting stay is attached to the upper part of the engine and the cover is fixed to the upper part of the mounting stay, the cover can be easily attached and the attachment is ensured. Furthermore, each functional component can be arranged efficiently and orderly.

  According to a fourth aspect of the present invention, the functional parts are a catalyst chamber and a silencing chamber constituting an engine exhaust device, an air cleaner and a throttle body constituting an engine intake device, the catalyst chamber and the silencing chamber, an air cleaner, It is characterized in that the throttle body and the stay are partitioned.

  The catalyst chamber and the muffler chamber, and the air cleaner and the throttle body are partitioned in plan view. These catalyst chambers, silencer chambers, air cleaners and throttle bodies can be arranged in a functional and orderly manner, and heat insulation that prevents heat generated in the exhaust device, for example, from the exhaust device from being transmitted to the intake device is provided. The board can be easily installed.

  In the invention according to claim 1, the cylinder portion of the engine is disposed forwardly in the cover, the exhaust device is provided with an exhaust purification catalyst chamber and a noise reduction chamber, and fuel is supplied to the engine in the cover. Since the fuel injection valve and the throttle body are arranged, the space above the engine can be used effectively by the forward tilt of the cylinder portion. In addition, the fuel injection valve and the throttle body can accurately control the amount of fuel and air supplied to the combustion chamber of the engine, and in addition to this, the exhaust gas can be made cleaner by the catalyst chamber. It becomes possible. In addition, since the engine, the rear wheel, the catalyst chamber, the muffler chamber, the fuel injection valve, and the throttle body are in an integrated cover, the above-mentioned parts can be efficiently protected together and the appearance can be improved.

  In the invention which concerns on Claim 2, since the radiator was arrange | positioned in a cover, the engine arrange | positioned in a cover can be efficiently cooled with the cooling water which thermally radiated with the radiator by ventilating to a radiator, and compactization is carried out. As a result, the cooling performance of the engine can be improved. Moreover, a radiator can be made to adjoin to an engine, the radiator hose which connects a radiator and an engine can be shortened, and cost can be reduced.

  In addition, for example, when a louver is provided in the cover in front of the radiator, the cover's louver is aligned at a right angle to the longitudinal axis of the vehicle body, and the opening is aligned vertically with the opening slightly below the horizontal, so that the air flowing at the lower part of the vehicle body is fast. Can be efficiently guided.

  In the invention according to claim 3, the engine and a plurality of functional parts provided above the engine are arranged on the rear vehicle body, and a cover member that covers the engine and the plurality of functional parts is fixed to the engine with a mounting stay. Since the mounting stay is arranged so that the functional parts are partitioned in plan view, the cover can be securely and easily attached to the mounting stay supported by the engine. The air cleaner can be mounted more stably when mounted on the mounting stay than when mounted directly on the mounting stay. In this way, it is possible to attach the cover member to the mounting stay as well as attach each functional component, making it possible to arrange each functional component effectively, making the rear vehicle body compact and making each functional component efficient. It can be arranged well and neatly.

  In the invention according to claim 4, since the attachment stay divides the catalyst chamber and the silencing chamber provided in the exhaust device and the intake device including the air cleaner and the throttle body in a plan view, the catalyst chamber, the silencing chamber, the air cleaner and the throttle The body can be arranged functionally and orderly, and a heat shield that prevents heat generated in the exhaust device from being transferred to the intake device can be easily attached to the mounting stay.

The best mode for carrying out the present invention will be described below with reference to the accompanying drawings. The drawings are viewed in the direction of the reference numerals.
FIG. 1 is a side view of a swing tricycle according to the present invention. The swing tricycle 10 includes a bar handle 12 for steering one front wheel 11, a front vehicle body 14 having a seat 13 on which a driver sits, and a pair of left and right wheels. By connecting the rear wheels 16, 16 and the rear vehicle body 18 including the power unit 17 that drives these rear wheels 16, 16 via a swing mechanism 21, the rear vehicle body 18 is moved up and down with respect to the front vehicle body 14. It is a vehicle that is connected so as to be able to swing freely and to roll left and right.

  The front vehicle body 14 is provided with a front cover 23 in front of the bar handle 12, and a wind screen 26 having a wiper 24 is attached to the top of the front cover 23, and a step floor 27 is provided below the bar handle 12 and the seat 13. A pair of left and right posts 28, 28 (only the reference numeral 28 on the front side is shown) is raised from the rear of the seat 13, a roof 31 is passed between the wind screen 26 and the posts 28, 28, and a load is placed behind the seat 13. The chamber 32 is arranged. 35 is a front fender that covers the upper side of the front wheel 11, 36 is a rearview mirror, 37 is a headlamp, 38 is a fuel tank provided below the seat 13, 41 is a fuel pump provided in the fuel tank 38, and 42 is a front This is a cushion unit for cushioning that is passed between the vehicle body frame on the vehicle body 14 side and the swing mechanism 21.

  In the rear vehicle body 18, an intake device 51 and an exhaust device 52 are connected to the power unit 17, and the power unit 17, the intake device 51, the exhaust device 52, other functional parts, and the rear wheels 16 and 16 are covered with an integrated cover 53. Is.

  The swing mechanism 21 has a link 55 attached at one end to the lower part of the body frame of the front vehicle body 14 so as to freely swing back and forth, a front end attached to the other end of the link 55 so as to swing freely, and a rear end as a power unit of the rear vehicle body 18. 17 and a joint case 57 attached to a bracket 17 via a bracket 56.

  The joint case 57 includes a case body 61, a joint shaft 62 that is rotatably inserted into the case body 61 and has a rear portion attached to the power unit 17 side, and is interposed between the case body 61 and the joint shaft 62. The damper part 63 is made to be.

  The damper part 63 interposes a plurality of columnar rubbers between the plurality of pressing members extending in the radial direction from the joint shaft 62 and the case body 61, and pushes the rubber by relative rotation between the pressing members and the case body 61. It is a so-called “Nighthart damper” that exerts a damper action when contracted.

  FIG. 2 is a side view (partially sectional view) showing the rear vehicle body of the swinging tricycle according to the present invention. A bracket 56 is attached to the joint shaft 62 constituting the swinging mechanism 21 with bolts 66, 66. The lower part of the power unit 17 is attached with bolts 67, 67, the intake device 51 is attached to the upper part of the cylinder head 68 constituting the power unit 17, the exhaust device 52 is attached to the lower part of the cylinder head 68, and the upper part of the power unit 17 is The stay member 71 that supports the cover 53 is attached. In addition, the arrow (FRONT) in a figure represents the vehicle front (the same is hereafter). Reference numeral 73 in the figure denotes a radiator disposed on the right side surface of the power unit 17.

  The power unit 17 includes an engine 76 and a continuously variable transmission 77 integrally connected to the engine 76. The rotation of the crankshaft 81 is transmitted to the driven shaft 83 via the belt 82. This is transmitted to the output shaft 84 via a gear (not shown) to drive the left and right rear wheels 16, 16 (see FIG. 1) attached to the output shaft 84. In addition, 86 is a head cover, 87 is a cylinder block, 88 is a transmission case.

  The cylinder head 68 is provided with an intake pipe 95 to which a combustion injection valve 91 that injects fuel into an intake passage is fixed. The fuel injection valve 91 includes a fuel pump 41 (see FIG. 1) of the fuel tank 38 (see FIG. 1). 1) is connected to a resin fuel hose 92 extending from the resin.

  The above-described cylinder block 87, cylinder head 68, and head cover 86 constitute a cylinder portion 93 of the engine 76, and the cylinder portion 93 is a portion inclined forward to a substantially horizontal state.

  The intake device 51 includes an intake pipe 95, a throttle body 96 connected to the end of the intake pipe 95, a connecting tube 97 connected to the suction port side of the throttle body 96, and an air cleaner 98 connected to the connecting tube 97. The throttle body 96 and the air cleaner 98 are both positioned above the power unit 17, and the air cleaner 98 is supported by the stay member 71. A throttle cable 101 extends from a throttle grip on the bar handle 12 (see FIG. 1) side to open and close a throttle valve provided in the throttle body 96.

  The exhaust device 52 includes a front exhaust pipe 106 having one end attached to the lower portion of the cylinder head 68 with bolts 104 and 104 and nuts 105 and 105 and extending the left side of the cylinder head 68 substantially upward, and the front exhaust pipe 106. And a rear exhaust pipe 108 connected to the rear part of the catalyst pipe 107 and extending rearward and obliquely downward, and a rear end of the rear exhaust pipe 108. And a tail pipe 112 extending obliquely downward and rearward from the silencer 111. The silencer 111 is disposed at a position lower than the catalyst pipe 107 and protrudes from the transmission case 88. The silencer 111 is attached to the protruding portion 88a via the bracket 114.

  Assuming that the portion from the front exhaust pipe 106 attached to the cylinder head 68 to the rear exhaust pipe 108 is a single exhaust pipe, the front exhaust pipe 106 extends substantially upward from the lower part of the cylinder head 68, and the catalyst pipe 107 Since the rear exhaust pipe 108 extends rearward substantially horizontally and extends rearward and obliquely downward, the overall length of one exhaust pipe, that is, the exhaust pipe length can be increased in a limited space within the cover 53 in the rear vehicle body 18. .

  The stay member 71 includes a stay main body 117 attached to and raised from the power unit 17, a frame member 118 attached to the upper end portion of the stay main body 117, and a cover support bracket 121 attached to the frame member 118.

  The stay main body 117 includes front stays 124 and 125 and a rear stay 127. The rear stay 127 is located between the air cleaner 98 and the silencer 111, and heat generated by the silencer 111 is transmitted to the air cleaner 98 and the like. It is a member to which a heat shield plate 128 that shields heat so as not to be transmitted is attached.

  The cover support bracket 121 includes a pair of left and right front brackets 131 and 131 (only the front side reference 131 is shown) provided at the front and a pair of left and right rear brackets 132 and 132 (a front side reference 132) provided at the rear. This is a member in which an integral cover 53 is attached with a bolt 133 via a rubber.

  The cover 53 is provided with a front opening 136 at the front so that the head cover 86 side faces the front of the vehicle body, a vent 137 having a labyrinth structure is provided at the top to vent the inside and outside of the cover 53, and a rear opening 138 is provided at the rear. It is a provided member.

  The above-described components of the intake device 51, the components of the exhaust device 52, and the fuel injection valve 91 are functional components. These functional components and the power unit 17 (that is, the engine 76 and the continuously variable transmission 77) are A drive unit 130 that drives the wheels 16 and 16 is configured.

  As described above, according to the present invention, the rear vehicle body 18 connected to the rear portion of the front vehicle body 14 is attached to the front vehicle body 14 so as to be swingable left and right, and the rear vehicle body 18 is covered with the integral cover 53. In the tricycle 10 including the engine 76 in the cover 53, the rear wheels 16 and 16 driven by the engine 76, and the exhaust device 52 of the engine 76, the cylinder portion 93 of the engine 76 is disposed in the cover 53 so as to be inclined forward. The exhaust device 52 includes a catalyst tube 107 as a catalyst chamber for exhaust purification and a silencer 111 as a silencer chamber. A fuel injection valve 91 for supplying fuel into the engine 76 and a throttle body 96 are provided in the cover 53. It is arranged.

  Thereby, the space above the engine 76 can be effectively used by the forward tilt of the cylinder portion 93. In addition, the fuel injection valve 91 and the throttle body 96 can accurately control the amount of fuel and air supplied to the combustion chamber of the engine 76. In addition, the catalyst tube 107 can clean the exhaust gas more cleanly. It becomes possible to. Further, since the engine 76, the rear wheels 16 and 16, the catalyst pipe 107, the silencer 111, the fuel injection valve 91, and the throttle body 96 are in the integral cover 53, the above-mentioned parts are integrated together for efficient protection. And the appearance can be improved.

FIG. 3 is a plan view of the main part of the swinging tricycle according to the present invention, in which the power unit 17 is disposed between the left and right rear wheels 16 and 16 and the throttle body 96 constituting the intake device 51 extends in the longitudinal direction of the vehicle body. The air cleaner 98 is arranged behind the throttle body 96, the catalyst pipe 107 constituting the exhaust device 52 is extended in the longitudinal direction of the vehicle body, and the silencer 111 is extended in the vehicle width direction. It shows that the longitudinal direction and the longitudinal direction of the silencer 111 are arranged at right angles. 141A and 141B are axles of the rear wheels 16 and 16, and these axles 141A and 141B are connected via a differential mechanism (not shown).
The throttle body 96 is connected to the rear end of the intake pipe 95 extending rearward from the cylinder head 68.

  The air cleaner 98 is attached to the rear portion of the frame member 118 assembled in a cross-girder shape with three bolts 142, and is a rectangular air cleaner that is short in the longitudinal direction of the vehicle body and long in the vehicle width direction in a plan view of the air cleaner 98. The inside of the case 143 is separated into a triangular chamber duct 146 and a purification chamber 147 in a plan view by a partition wall 144. A triangular air inlet 148 is provided on the upper wall above the duct chamber 144, and the air cleaner case 143 has an upper wall on the upper wall. An upper duct 151 that connects the duct chamber 144 and the purification chamber 147 is provided. In the figure, S1 is the width of the air cleaner 98 in the lateral direction of the vehicle body, S2 is the length of the air cleaner 98 in the longitudinal direction of the vehicle body, and there is a relationship of S1> S2. Reference numeral 152 denotes an extension provided integrally with the connecting tube 97, which is a portion disposed in the purification chamber 147.

The catalyst tube 107 and the silencer 111 form two sides of a rectangular space 155.
Since the space 155 is square, a larger area can be obtained between the rear wheels 16 and 16, and in this space 155, the throttle body 96, the air cleaner 98 and many other functional parts (for example, the fuel injection valve 91, electrical components). , Battery (not shown), etc.) can be arranged in an orderly and dense manner, and can be made compact, and the space 155 can be used effectively.

  The frame member 118 extends in the vehicle width direction and crosses over the front end portion of the catalyst pipe 107, a rear frame 162 disposed behind and parallel to the front frame 161, and the front frame 161 thereof. A left frame 163 that is connected to the inside of the vehicle body from the left end of the frame 161 so as to be orthogonal to the front frame 161 and the rear frame 162, and to the front of the left frame 163 to the right and parallel to the left frame 163 The right frame 164 is connected to each of the frame 161 and the rear frame 162, and an air cleaner 98 is attached to the left frame 163 and the right frame 164.

The rear frame 162 is a member supported by a substantially V-shaped rear stay 127.
The radiator 73 is attached to the right front portion of the cylinder block 87 and the transmission case 88 via a case cover (not shown), and is disposed so as to protrude forward of the right rear wheel 16 from the cylinder block 87 side. Reference numeral 73a denotes a radiator cap.

  The cover 53 indicated by a two-dot chain line covers the power unit 17, the intake device 51, the exhaust device 52, the rear wheels 16 and 16, the stay member 71, and the radiator 73, and the traveling wind is directed to the front of the radiator 73 inside the cover 53. In particular, a louver 166 for applying the traveling wind to the radiator 73 is provided.

  The fuel hose 92 extends from the fuel pump 41 to the upper side of the fuel tank 38 obliquely to the right and rearward, and further to the lower side of the fuel tank 38 to the front of the vehicle body. It is a member that approaches the moving mechanism 21 (see FIG. 1) side and extends rearward along the swinging mechanism 21 and is connected to the fuel injection valve 91 provided in the intake pipe 95, and is elastically deformed with a small diameter resin. Therefore, the assembling property to the swinging tricycle can be improved and the swinging of the vehicle body can be followed. Reference numeral 168 denotes a filler cap for the fuel tank 38.

As shown in FIGS. 1 and 3, the present invention is characterized in that the radiator 73 is disposed in the cover 53.
Since the radiator 73 is disposed in the cover 53, the engine 76 disposed in the cover 53 can be efficiently cooled by the cooling water radiated by the radiator 73 by blowing air to the radiator 73, and the rear vehicle body 18 is compact. Thus, the cooling performance of the engine 76 can be improved. Further, the radiator 73 can be brought close to the engine 76, the radiator hose 203 (see FIG. 4) connecting the radiator 73 and the engine 76 can be shortened, and the cost can be reduced.

  Further, for example, when the louver 166 is provided in the cover 53 in front of the radiator 73, the louver 166 of the cover 53 is aligned vertically at a right angle with respect to the longitudinal axis of the vehicle body and the opening is slightly below the horizontal, so The air with fast flow can be efficiently guided.

  Further, according to the present invention, in the swing tricycle 10 in which the rear vehicle body 18 connected to the rear portion of the front vehicle body 14 is attached to the front vehicle body 14 so as to be swingable left and right, the rear vehicle body 18 has the rear wheels 16, 16. And a plurality of functional parts provided above the engine 76, and the engine 76 and a cover 53 covering the plurality of functional parts are fixed to the engine 76 with a stay member 71 as an attachment stay. The stay member 71 is characterized in that the functional parts (that is, the throttle body 96 and the air cleaner 98, the catalyst tube 107, and the silencer 111) are arranged so as to partition in plan view.

  The cover 53 can be reliably and easily attached to the stay member 71 supported by the engine 76. For example, in the case of a large-sized one such as the air cleaner 98, the air cleaner 98 is attached to the stay member 71 rather than directly attached to the engine 76. Can be installed stably. In this way, the cover 53 can be attached to the stay member 71 as well as the functional parts, and the functional parts can be effectively arranged, making the rear vehicle body 18 compact and the functional parts. Can be arranged efficiently and orderly.

  Further, according to the present invention, the functional parts are a catalyst pipe 107 and a silencer 111 constituting the exhaust device 52 of the engine 76, an air cleaner 98 and a throttle body 96 constituting the intake device 51 of the engine 76, and these catalyst pipes 107. The silencer 111, the air cleaner 98, and the throttle body 96 are partitioned by a stay member 71.

  The stay member 71 divides the catalyst pipe 107 and the silencer 111 provided in the exhaust device 52 and the intake device 51 including the air cleaner 98 and the throttle body 96 in a plan view. The catalyst pipe 107, the silencer 111, the air cleaner 98, and the throttle body 96 can be arranged functionally and orderly, and heat generated in the exhaust device 52, for example, the silencer 111, of the intake device 51, For example, a heat shield plate 128 (see FIG. 2) that prevents transmission to the air cleaner 98 can be easily attached to the stay member 71.

FIG. 4 is a side view for explaining the arrangement of the radiator according to the present invention, and shows the engine 76 on the right side.
The radiator 73 includes an upper tank 195, a lower tank 196, and a radiator core 197 delivered to each of the upper tank 195 and the lower tank 196. The upper tank 195 and the lower tank 196 are attached to the case cover 198. The case cover 198 is a member attached so as to straddle the right side surfaces of the cylinder block 87 and the transmission case 88. Note that 201 is a cooling water inlet pipe provided in the upper tank 195, 202 is a cooling water outlet pipe provided in the lower tank 196, and 203 is a radiator hose connecting the water jacket side in the engine 76 and the inlet pipe 201. is there.

  FIG. 5 is a view taken in the direction of arrow 5 in FIG. 4, and mounting portions 205 are provided on the left and right sides of the upper tank 195 of the radiator 73 and below the lower tank 196, and these mounting portions 205 are respectively mounted on the case cover 198 with bolts 206. It shows that. 198a is an attachment surface for attaching the case cover 198 to each of the cylinder block 87 (see FIG. 4) and the transmission case 88 (see FIG. 4), and 198b is a case cover to each of the cylinder block 87 and the transmission case 88. It is a bolt insertion hole of a bolt for mounting 198.

  FIG. 6 is a side view (partially sectional view) showing a radiator and a louver according to the present invention. A louver 166, which is a separate member from the cover 53, is provided on the front wall 53 a of the cover 53 in front of the radiator 73. Show.

A plurality of louvers 166 are provided in openings 53b provided in the front wall 53a so as to be aligned at substantially equal intervals along the front wall 53a, and the front end portion 166a is inclined slightly downward with respect to the horizontal line 210 by an angle θ. Is extended in the vehicle width direction.
In this way, by aligning the louvers 166 upwards and downwards slightly below the horizontal, it is possible to efficiently guide the fast-flowing air in the lower part of the vehicle body as indicated by the arrows.

  In this embodiment, as shown in FIG. 2, the heat shield plate 128 is provided between the air cleaner 98 and the silencer 111, but in FIG. 3, a heat shield plate is provided on the left frame 163 of the frame member 118. This heat shield plate may be provided between the air cleaner 98 and the catalyst tube 107.

  The present invention is suitable for a swinging tricycle.

It is a side view of the rocking tricycle according to the present invention. It is a side view which shows the rear vehicle body of the rocking tricycle which concerns on this invention. It is a principal part top view of the rocking tricycle which concerns on this invention. It is a side view explaining arrangement of a radiator concerning the present invention. FIG. 5 is a view taken in the direction of arrow 5 in FIG. 4. It is a side view which shows the radiator and louver which concern on this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Swing tricycle, 14 ... Front vehicle body, 16 ... Rear wheel, 18 ... Rear vehicle body, 51 ... Intake device, 52 ... Exhaust device, 53 ... Cover, 71 ... Mounting stay (stay member), 73 ... Radiator, 76 ... Engine: 91 ... Fuel injection valve, 93 ... Cylinder part, 98 ... Air cleaner, 107 ... Catalyst chamber (catalyst tube), 111 ... Silencer chamber (silencer), 130 ... Drive part.

Claims (4)

The rear vehicle body connected to the rear portion of the front vehicle body is attached to the front vehicle body so as to be swingable to the left and right, the rear vehicle body is covered with an integral cover, the engine in the cover, the rear wheel driven by the engine, In a tricycle equipped with an engine exhaust,
A fuel injection valve in which the cylinder portion of the engine is disposed in the cover so as to be inclined forward, and the exhaust device is provided with a catalyst chamber and a silencing chamber for purifying exhaust, and supplies fuel into the engine in the cover. And a swing tricycle characterized by arranging a throttle body.   The swing tricycle according to claim 1, wherein a radiator for cooling the engine is disposed in the cover. In a swing tricycle in which the rear vehicle body connected to the rear portion of the front vehicle body is swingably mounted to the left and right with respect to the front vehicle body,
An engine for driving the rear wheels and a plurality of functional parts provided above the engine are disposed on the rear vehicle body,
A cover that covers the engine and the plurality of functional parts is fixed to the engine with an attachment stay,
An oscillating tricycle characterized in that the mounting stay is arranged so as to partition the functional component in plan view.   The functional parts are a catalyst chamber and a muffler chamber constituting an exhaust device of the engine, an air cleaner and a throttle body constituting an intake device of the engine, and the catalyst chamber and the muffler chamber, and the air cleaner and the throttle body. 4. The swing tricycle according to claim 3, wherein the swing stay is partitioned by the mounting stay.

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