CN1091710C - Auxiliary part's installation for motor bicycle - Google Patents

Abstract

An arrangement structure of auxiliary components of a two-wheeled motor vehicle, in which the fuel tank is arranged between the two-stroke engine and the fuel tank arranged above it, at a position close to the left side of the vehicle body as viewed from the plan view direction and on the left side of the fuel tank Overlapping, viewed from a side view, is below the lower end edge of the fuel tank and partially overlaps the upper part of the engine, and is suspended and supported by an auxiliary member supporting member supported by the vehicle body frame. The outer side of the fuel tank is covered by an auxiliary component cover attached to the lower end portion of the fuel tank. The auxiliary component cover is divided into a main part and an auxiliary part. The main part is eye-catchingly decorated with decorative paint, and the auxiliary part is equipped with an observation window for detecting the oil quantity of the auxiliary chamber.

Description

Arrangement structure of auxiliary components of two-wheeled motor vehicle

The present invention relates to a structure for arranging auxiliary components in a space between an engine and a fuel tank of a motorcycle, and particularly relates to a structure suitable for arranging auxiliary components for a two-stroke engine.

Japanese Patent Publication No. Sho 61-91482 discloses an arrangement structure of auxiliary components, which arranges a fuel tank above the two-stroke engine, and at the same time makes the front side of the bottom of the fuel tank tilt forward and upward, forming A recessed space is provided, and an oil tank is disposed in the recessed space.

However, in the case of the above-mentioned structure, it is easy to sacrifice the capacity of the fuel tank by forming a recessed space for arranging the auxiliary member. In addition, since the fuel tank is separately disposed as an auxiliary member in the recess space, there is no room for placing other auxiliary members.

In order to solve the above-mentioned problems, the present invention provides an auxiliary component arrangement structure of a two-wheeled motor vehicle equipped with an engine supported by a vehicle body frame supporting front and rear wheels and a fuel tank disposed above it; its features It is to make the liquid tank below the lower end edge of the fuel tank and partially overlap with the upper part of the engine when viewed from the side, and then arrange it at a position close to either side of the left and right directions of the vehicle body when viewed from the top, and at the same time, avoid covering the liquid tank. The auxiliary member covers, which are generally elliptical in lateral view on the outer side, are provided as a pair of left and right together with the other side of the main body.

At this moment, the aforementioned engine can be taken as a two-stroke engine, and the liquid tank can be taken as an oil tank.

In addition, other auxiliary components other than the above-mentioned liquid tank may be arranged at positions covered by the auxiliary component cover provided on the other side of the vehicle body from the side direction, and this structure is used when the engine is a two-stroke engine and the liquid tank When it is an oil tank and in other situations, for example, the engine is a four-stroke engine and the liquid tank is used as a storage tank for liquid, etc. It is also applicable.

Furthermore, the above-mentioned engine is a two-stroke engine, the above-mentioned liquid tank is an oil tank, and a driving device for driving an exhaust timing control valve of a two-stroke engine may be used as the other auxiliary member.

In addition, the auxiliary component cover that covers the above-mentioned liquid tank is divided into a main part and an auxiliary part, and the main part is painted. At the same time, the surface of the auxiliary part is formed on the surface of the auxiliary part. The amount of oil can also be provided with an observation window on the auxiliary part.

A liquid tank is arranged between the fuel tank and the upper part of the engine, and at the same time, the liquid tank is close to either side of the vehicle body in the left and right directions when viewed from a plan view, and is below the lower end edge of the fuel tank and partially overlaps with the upper part of the engine when viewed from a side direction, Therefore, even a large-capacity liquid tank as an auxiliary component can be arranged without sacrificing the capacity of the fuel tank.

Moreover, because the liquid tank is arranged between the fuel tank and the upper part of the engine and close to the side of the vehicle body, it is arranged in a position that is easy to see from the outside direction, which certainly tends to sacrifice the appearance of the vehicle body.

However, since the outer side of the liquid tank is covered by a pair of substantially elliptical auxiliary member covers on the left and right, the liquid tank does not protrude when viewed from the side, and the auxiliary member cover is not a simple cover, but By constituting an appearance like an engine functional part, it is possible to make it stand out in appearance without sacrificing the appearance of the vehicle body.

In this case, when a two-stroke engine is used as the engine, an oil tank for the two-stroke engine may be arranged as the liquid tank.

In addition, by using the space covered by the auxiliary component cover provided on the opposite side of the liquid tank in the vehicle body, auxiliary components other than the liquid tank can be arranged, so the space between the fuel tank and the engine can be arranged in the left and right directions. Auxiliary components to improve space utilization.

And, in the case of a two-stroke engine, if the liquid tank is an oil tank, and other auxiliary components are driving devices for driving the exhaust timing control valve of the two-stroke engine, it is easy to wire and pipe between these auxiliary components and the two-stroke engine, respectively. Structure.

Furthermore, the auxiliary component cover covering the liquid tank is divided into the main part and the auxiliary part, and only the main part is painted to make it conspicuous. Since the auxiliary part has an unobtrusive surface in appearance, only the main part can be recognized. Cover for auxiliary components.

Therefore, the size of the auxiliary component cover can be set irrespective of the capacity and external dimensions of the liquid tank, and an auxiliary component cover of an ideal size in terms of appearance design required by each type of vehicle can be provided, so the versatility is also improved.

Moreover, by setting the auxiliary part unobtrusively, the main body part can be made conspicuous, and by providing the observation window, the liquid amount of the liquid tank can be determined visually without taking off the auxiliary member cover, and it can be installed in an unobtrusive place. Noteworthy parts.

Accompanying drawing 1: the left side view of the applicable motor two-wheel vehicle of the present invention;

Attached Figure 2: Enlarged view of the main parts of the two-wheeled motor vehicle

Attached Figure 3: Left side view of the exterior around the fuel tank

Attached Figure 4: Top view of the exterior around the fuel tank

Figure 5: Top view around the auxiliary member bracket

Figure 6: Left side view around auxiliary member bracket

Accompanying drawing 7: Diagram showing the connection structure of the main part and the auxiliary part of the auxiliary component cover

Figure 8: A schematic sectional view showing the support mechanism of the fuse box

An embodiment of the present invention will be described below with reference to the drawings. Fig. 1 is an overall left side view of a two-wheeled motor vehicle to which the present invention is applied, and Fig. 2 is an enlarged view of its main parts. First, the overall schematic structure will be described based on these two figures.

The two-wheeled motor vehicle as a whole is constructed in such a way that a long wheelbase with a large inclination of the front fork forms an American or traditional model with a fuel tank at a low position between the front and rear wheels and a low seat position. (カスタム) The appearance of a motorcycle.

The upper part of the front fork 2 that supports the front wheel 1 is rotatably supported by the head pipe 5 via the bottom bridge 3 and the top bridge 4 while being greatly inclined rearward.

After the handle 6 that is installed on the top bridge frame 4 stretches greatly to the top earlier, the handle is made towards the below, forming the common handle shape like that in American type or traditional motorcycles.

The main frame 10 on which the head pipe 5 is mounted is arranged forward and rearward along the center line of the vehicle body. The front half 10a starts from the head pipe 5 and extends obliquely downward to the rear. Half 10b.

Starting from the left and right sides of the lower part of the head pipe 5, the down frame 11 extends obliquely downward in a pair of left and right, and its lower end is connected to the lower frame 12 extending substantially horizontally in the front and rear direction. The rear end portion starts obliquely upward and extends continuously backward in a pair of left and right.

Between the rear ends of the left and right lower frames 12, a right-angle cross pipe 12a is provided, and the lower end of the rear half 10b constituting the main frame 10 is connected to the middle portion of the right-angle cross pipe 12a (FIG. 2).

The substantially triangular pivot plates 14 connecting the rear parts of the left and right lower frames 12 and the lower parts of the rear stays 13 are provided in pairs on the left and right sides of the vehicle body, and a later-described lower frame pivot part 14 a is provided at the center thereof.

From the rear end of the front half 10a constituting the main frame 10, a pair of left and right seat rails 15 extend obliquely downward and rearward, and the upper parts of the left and right rear stays 13 are respectively connected to the middle.

The left and right seat rails 15 are bent near the connecting portion of the middle part with the rear stay 13, extend substantially horizontally to the rear, and pass through the outside of the rear fender 42 described later, while the outer surface is covered with the clamp bar 16. .

The clamp bar 16 is integrated with the left and right seat rails 15 and a pair of left and right auxiliary frames 18 arranged in parallel in the rear fender with fastening members 17a and 17b, and the rear signal lamp 19 is supported by the rear end of the clamp bar 16. superior.

The main frame 10, the lower frame 11, the lower frame 12, the rear stay 13 and the seat rail 15 constitute the vehicle body frame, wherein the main frame 10, the lower frame 11, and the lower frame 12 constitute the front part of the vehicle body frame. Engine 20 is supported here.

The engine 20 is a water-cooled two-stroke type, and constitutes an appearance just like an air-cooled four-stroke type. The left and right sides of the cylinder portion 20a imitate the appearance shape of the side surface of the cylinder portion of an air-cooled four-stroke type engine. The cylinder cover 20b is covered.

The engine 20 takes in air from an air cleaner 22a inside a side cover 22 through a carburetor 21, and exhausts air through an exhaust pipe 23, an exhaust chamber 23a, and a muffler 24 disposed on the right side of the vehicle body.

As shown in FIG. 2, the exhaust chamber 23a is disposed in the front-rear direction below the central part of the engine 20, and consists of a guide part 23b that gradually expands in diameter toward the rear, a linear portion 23c that has the largest diameter and a constant diameter, and a diameter that gradually decreases toward the rear. The conical flow guide part 23d constitutes.

On the axial center portion of the exhaust chamber 23a, a two-stage catalytic cylinder 23e is arranged long along the front-back direction; the front side of the catalytic cylinder 23e is a small diameter, and the rear side is a large diameter, and the diameter is divided into two stages; A catalyst is evenly arranged in advance to purify the relatively high-temperature exhaust gas that it contacts when passing through the inside and outside of the second-stage catalytic cylinder 23e.

A curved portion 23f is formed on the upper portion of the straight portion 23c to avoid the right-angled cross pipe 12a, and at the same time, a tail pipe 23g is branched from the side near the rear end and extends to the right side of the vehicle body, and the rear end is connected to the muffler. 24. In this way, the degree of freedom of installation of the exhaust chamber 23a is improved.

The right side of the tailpipe 23g is covered by an exhaust side cover 23h whose exterior surface is plated, and when viewed from the right side of the vehicle body, the muffler 24 and the air guide portion 23d appear to be integrally continuous.

Reference numeral 25 is a crank case, 26 is an output sprocket, and the rear wheel 29 is driven by the output sprocket 26 , the chain 27 and the driven sprocket 28 . The rear wheel 29 is equipped with a disc-shaped butterfly wheel.

The rear wheel 29 is supported by the rear end of the rear arm 30 . The rear arm 30 is composed of a pair of arm portions 30a and a right-angled intersection portion 30b connecting the respective front end portions. The right-angled intersection portion 30b is vertically supported by a pivot shaft 14b ( FIG. 2 ) that supports both ends of the pivot plate 14 at a pivot point 14a.

In addition, as shown in FIG. 2 by cutting off a part of the pivot plate 14, a concave portion 10c bent forward is formed in the rear half 10b of the main frame 10 near the right-angled intersection 30b. The half portion 10b is provided at the center of the vehicle body, and right-angled intersections can be continuously provided in the left-right direction without interfering with the rear half portion 10b.

Utilize the space formed between the left and right arm parts 30a on the front part side of the rear arm 30 to arrange the heat dissipation water storage tank 31, overlap the arm part 30a of the rear arm 30 when viewed from the side, and arrange most of it by the side cover 22 above it. The covered battery 32 , furthermore, the shock absorber 33 is installed between the rear portion of the arm portion 30 a of the rear arm 30 and the upper portion of the rear stay 13 .

On the main frame 10, the teardrop-shaped fuel tank 34 commonly used in an American type or traditional motorcycle is supported, and various instruments 36 such as an instrument box 35 and a speedometer are arranged on the front portion above it. The head of the fuel tank filler cap 34d protrudes from the rear.

Auxiliary component covers 37 are mounted on the left and right sides of the lower part of the fuel tank 34. These left and right auxiliary component covers 37 are formed of resin and are plated in silver on the surface to cover each upper side of the cylinder cover 20b located below the fuel tank 34, or look like The appearance such as the metal specifications air cleaner.

The rear stepped seat 38 of the fuel tank 34 is supported on the seat rail 15, and the rear portion of the stepped seat 38 has a section of higher seat 39 that forms a co-passenger useful seat, thereby forming a double seat.

The seat 38 is disposed toward a low position near the rear wheel 29 so that the seat can be lowered, and the shape of the above-mentioned handle bar 6 and the fuel tank 34 together form a characteristic vehicle body appearance commonly used in American or conventional motorcycles.

At the rear of the passenger's seat 39 , the rear handlebar, which has a substantially arc-shaped pipe member, is arranged facing up and down, and the rear handlebar base 41 connected to the lower end thereof is supported on the seat rail 15 through the outer side of the rear fender 42 on the rear end.

The rear fender 42 is supported between the left and right seat rails 15 , and tail lights 43 , fenders 44 , etc. are arranged at the rear end, and these components are supported by the auxiliary frame 18 inside the rear fender 42 .

Reference numeral 45 is a pair of left and right gussets covering the space formed by the head pipe 5, the front half 10a of the main frame 10, and the down frame 11; 46 is an oil tank covered by the auxiliary component cover 37; 47 is an oil pump installed in the inlet manifold. The pipe is adjacent and connected to a solenoid valve 49 supported by a support 48 extending upward.

50 is a fuel valve, 51 is an air suction chamber connected to the suction pipe on the downstream side of the carburetor 21, 52 is a cooler, and 52a is a water pump.

53 is a shift pedal, and 54 is a brake pedal on the right side of the vehicle body. They are arranged at a position corresponding to the lower front of the engine 20. The driver adopts an American style or a traditional motorcycle riding posture that stretches his feet forward.

The brake pedal 54 is supported near the front pedal 55, and the rear brake caliper 57 can be actuated by the master cylinder 56 disposed toward the lower frame 12 in the front-rear direction of the longitudinal direction.

On the middle part of the lower frame 12 on the left side of the vehicle body, a side bracket 58 ( FIG. 1 ) is freely provided, and a rear pedal 59 a is mounted on the rear stay 13 through a pedal bracket 59 .

The arrangement structure of the auxiliary member will be described in more detail below. Fig. 3 is a left side view of the appearance around the fuel tank, Fig. 4 is a top view thereof (the meter box is omitted), Fig. 5 is a top view around the auxiliary component support bracket, and Fig. 6 is a left side view thereof (the auxiliary component cover is omitted), and 7 is a connection structure diagram of the main part and the auxiliary part of the auxiliary member cover on the side of the liquid tank, and FIG. 8 is a schematic cross-sectional view showing the fuse box support structure.

In these figures, the left and right sides of the fuel tank 34 hang down to form a left chamber 34L and a right chamber 34R so as to form a substantially saddle shape, and they are connected to form a central upper chamber 34C.

As can be seen from FIG. 4 , the center of the front part of the fuel tank 34 forms an indented portion 60 that enters from the front to the rear in a roughly U-shape (viewed from above). A space 61 for auxiliary member arrangement is formed between 34R.

The upper portion of the bent portion 60 is covered by the gauge box 35 , and a part of the gauges 36 supported by the gauge box 35 is disposed with its lower portion protruding into the space 61 , thereby reducing the amount of protrusion toward the upper side of the fuel tank.

In addition, an auxiliary member supporting member 65 composed of a left bracket 62 on the left chamber 34L side, a right bracket 63 on the right chamber 34R side, and a right-angled cross pipe 64 connecting the two brackets is accommodated in the space 61 .

The central portion of the right-angle cross pipe 64 is connected to a support (not shown) on the reinforcement pipe 57 (FIG. The hanger is supported to reinforcing tubes forming part of the body frame.

Fig. 5 shows most clearly that the fuel tank 46 is suspended and supported by the left bracket 62 through the rubber bearings 68, 69, and its bottom is supported on the lower side bracket installed at the lower end of the support 70 suspended from the right-angle cross pipe 64 71.

A hole 72 is formed at one end of the lower bracket 71, and a protrusion 73 integrally extended downward from the bottom of the tank 46 is inserted into a fixing rubber 72a fitted in the hole to determine its position.

As can be seen from FIG. 4 , the fuel tank 46 is arranged to extend forward and backward so as to substantially overlap the top left side of the fuel tank 34 at a position on the left side of the bent portion 60 in plan view. An injection port protrudes forward at the front end, and a cap 75 is attached to the top end thereof.

As can be seen from FIG. 3 , the fuel tank 46 protrudes laterally in a side view so as to be below the lower end edge of the fuel tank 34 and overlap with the upper part of the cylinder head 20a constituting the engine 20 and the cylinder cover 20b covering it.

A ventilation passage 20d and an exhaust passage 20e are formed in the cylinder 20c constituting the cylinder portion 20a, and an exhaust device 20g for opening and closing its upper part is rotatably provided near the exhaust port 20f by means of a pulley 20h.

The pulley 20h is driven to rotate by an exhaust device driving device described later, and when the exhaust device 20g rotates integrally therewith, the height of the exhaust port 20f is changed to control the exhaust time.

The symbols in FIG. 3 indicate that 20i is a piston, which opens and closes the ventilation port 20j and the exhaust port 20f by reciprocating motion in the cylinder 20c. 20k is a hemispherical fuel chamber, 20m is a cylinder head, and 20n is a spark plug.

As can be seen from Fig. 7, the rear part of the fuel tank 46 forms a sub chamber 76 protruding downward in a further lowered position, and an oil level switch 77 is arranged inside it, and a joint 78 extends downward from the bottom of the sub chamber 76, and is connected to the engine. Oil pump 47 (Fig. 2).

As can be seen from FIG. 2 , the oil supply path starts from the oil pump 47 and supplies an appropriate amount of oil to the downstream part of the carburetor 21 through the solenoid valve 49 controlling the oil supply amount, and at the same time, the excess part returns to the vicinity of the injection port 74 of the oil tank 46 .

As can be seen from Figures 3 and 7, the outer side of the oil tank is covered by an auxiliary component cover 37L attached to the lower end edge of the left chamber 34L in a structure described later (hereinafter when it is necessary to distinguish between left and right, after reference numeral 37, when it is specified R is added for the right side, and L is added for the left side, and the auxiliary member cover 37L is divided into two parts, namely, the main part 80 covering the main part of the fuel tank 46 and the auxiliary part 81 covering the sub chamber 76 .

The main body part 80 and the auxiliary part 81 are respectively formed of appropriate materials such as plastics, and the surface of the main body part 80 is treated with a bright silver plating to give a decorative paint, giving it the appearance that is usually seen in an American-type two-wheeled motor vehicle or a conventional motorcycle. Impression of engine functional parts like the air cleaner box cover seen.

The auxiliary part 81 is given a surface treatment, using dark paint or an unobtrusive surface treatment to accentuate the main part 80, giving the impression that the main part 80 is another functional part entirely, while forming a visual auxiliary part on the side. Observation window 82 for remaining liquid in chamber 76. The location is selected in a place that is easy to see and not easy to attract people's attention in appearance.

On the other hand, as can be seen from FIGS. 4 and 5 , in the space 61 on the side of the right chamber 34R of the fuel tank 34 and in the vicinity of the right bracket 63 , the exhaust device driving device 83 and the fuse box 84 are used as auxiliary components. Support to right-angle crossing pipes.

It can be seen from FIG. 5 that the exhaust device driving device 83 is used to drive the exhaust device, and the exhaust device is used to control the exhaust time of the engine 20 . The exhaust drive device 83 is equipped with a pulley 86 driven by a stepping motor housed in a main body case 85 and a wire rope 87 operated by the pulley 86 .

As can be seen from FIG. 3 , the top end of the cable 87 is connected to the pulley 20h, and the stepping motor of the exhaust device driving device 83 rotates the exhaust device 20g through the pulley 20h.

It can be seen from Fig. 5 that the main body box 85 of the exhaust device driving device 83 is respectively installed on the bracket 91 through the fixing rubber 90 on the mounting parts 88 and 89 formed on the front part of the exhaust device, and the bracket 91 is fixed on the right-angle cross pipe. 64 on.

At this time, on the side of the mounting part 88, insert the hole part of the fixed rubber 90 into the pin 92 protruding integrally from the bracket 91, and on the side of the mounting part 89, use the bolt 93 and the screw pre-installed on the side of the bracket 91. The cap is tightened (see Figure 6).

It can be seen from FIG. 6 that the fuse box 84 is jointed and supported on the support 96, and the support 96 is installed to the bracket 94 by means of the fixing rubber 94a by means of the bolt 95 and the welding nut 94b of the bracket 94, and the bracket 94 is installed on the right-angle cross pipe 64. superior.

FIG. 8 is a schematic cross-sectional view illustrating the connection support structure. By inserting a protruding portion 98 protruding from the outer surface of the fuse box 84 into a substantially T-shaped section in the middle of the rail-shaped portion 97 formed at the top of the support 96, Fuse box 84 snaps onto support 96 .

As can be seen from FIGS. 5 and 6 , the left and right auxiliary member covers 37L, 37R are respectively equipped with vertical wall portions 100 , and holes 101 are provided on the sides of these vertical wall portions 100 at the front and rear respectively, and ring-shaped edge rubbers 102 are fitted on these insertion holes 101 .

The auxiliary member covers 37L, 37R are installed in a vibration-proof manner by inserting the protruding pieces 103 protruding forward and backward inwardly from the upper inner edges of the auxiliary member covers 37L and 37R into the insertion holes 101 surrounded by the edge rubbers 102 .

Furthermore, as can be seen from FIGS. 7 and 6 , for the main body portion 80 of the auxiliary component cover 37L, the lower central through hole 104 is overlapped with the mounting portion 105 formed at the end of the bracket 71, and is fixed to the mounting portion 105 provided on it with screws 107. on the nut on the inside.

In addition, the installation of the connecting portion between the auxiliary part 81 and the main body part 80 is connected by screws 110 and nuts 111. At this time, the outwardly curved edge 108 formed on the auxiliary part 81 and the inwardly curved edge part formed on the main body part The insides of the square curved flanges 109 overlap.

The function of this embodiment will be described below. Fuel tank 46 is arranged between fuel tank 34 and engine 20 tops, and simultaneously, this fuel tank is close to vehicle body left side under top view, and from side view direction, near the below of the lower edge of fuel tank 34, and its part and engine 20 The upper part of the cylinder 20a and its cylinder cover 20b are arranged overlappingly, so even the fuel tank 46 with a larger capacity as one of the auxiliary components required by the two-stroke engine can be arranged without sacrificing the capacity of the fuel tank 34.

Moreover, the fuel tank 46 is located between the fuel tank 34 and the engine 20, and since a part of it protrudes toward the vehicle body side, it becomes a conspicuous arrangement when viewed from the outside. Covering, so when viewed from the side, the extension of the fuel tank 46 cannot be felt.

Moreover, since the auxiliary component cover 37R is provided on the right side of the vehicle body opposite to the side where the fuel tank 46 is disposed, the auxiliary component covers 37L, 37R are seen as one component in appearance, and the surface is plated with silver, so they are not simple covers, but visually. It looks like an engine functional part such as an air cleaner, so the auxiliary component covers 37L, 37R can be used for exterior design. As a result, even if the fuel tank 46 is arranged, the appearance of the vehicle body will not be sacrificed.

In addition, using the space 61 covered by the auxiliary component cover 37R arranged on the opposite side of the fuel tank 46, auxiliary components other than the fuel tank 46 can be arranged, that is, the exhaust device driving device 83 and the fuse box 84, which can be located in the fuel tank 34 and the engine 20. A plurality of auxiliary components are arranged along the left and right directions in the space between to improve the space utilization rate.

Moreover, for the two-stroke engine 20, the oil tank 46, the exhaust device driving device 83 and the fuse box 84 are arranged laterally in the vicinity of the upper part of the engine 20, so the exhaust gas formed on the exhaust device driving device 83 and the cylinder 20a The arrangement structure near the pipe connection part and between the oil tank 46 and the oil pump below it facilitates wiring and piping.

Furthermore, the auxiliary component cover 37L covering the fuel tank 46 is divided into two parts: the main body 80 and the auxiliary part 81, and only the main body is painted and decorated to make it stand out, while the auxiliary part is not conspicuous, so that only the main body 80 can be used as Auxiliary component cover to be recognized.

As a result, since the size of the auxiliary component cover can be set regardless of the capacity and external dimensions of the fuel tank 46, it is possible to provide an auxiliary component cover of an appropriate size for the appearance that can meet the requirements of each vehicle model with priority given to the appearance. Versatility is also increased.

Furthermore, by setting the auxiliary part 81 inconspicuously in appearance, the main body part 81 can be made conspicuous, and by providing the observation window 82, the liquid amount of the fuel tank 46 can be visually confirmed without removing the auxiliary member cover 37, and can be installed on the appearance. Less noticeable parts.

In addition, when mounting the main body case 85 constituting the exhaust device driving device 83, one of the mounting portions 88, 89 at two positions is used as a joint structure using a pin 92, and the other mounting portion 89 is mounted on the other mounting portion 89. Since it is connected at only one position, loading and unloading work is quick and assembly is improved.

Likewise, since the protruding portion 98 formed integrally with the fuse box 84 can be supported simply by being inserted into the rail-shaped portion 97 formed at the tip of the support 96, the mounting and detachment work is quick and the assemblability is improved.

In addition, the present invention is not limited to the above-mentioned embodiments, and various modifications are possible. For example, the engine could also be a four-stroke engine, and the oil tank could also be replaced by a fluid tank containing various fluids. At this time, it is also possible to use a storage tank for cooling water.

Claims (5)

1. An auxiliary component arrangement structure of a two-wheeled motor vehicle, which is equipped with an engine supported by a body frame supporting front and rear wheels and a fuel tank arranged above it, characterized in that: The liquid tank is arranged below the lower end edge of the fuel tank in a side view and partially overlaps with the upper part of the engine, but is close to either side of the vehicle body in the left and right directions in a plan view. At the same time, it covers the outer side of the liquid tank , When viewed from the side, the substantially elliptical auxiliary component covers are provided as a left and right pair together with the other side of the vehicle body. 2. The configuration structure of the auxiliary components of the two-wheeled motor vehicle according to claim 1, characterized in that: The above-mentioned engine is a two-stroke engine, while the above-mentioned liquid tank is an oil tank. 3. The auxiliary component arrangement structure of the motorized two-wheeled vehicle according to claim 1 or 2, characterized in that: Another auxiliary member other than the liquid tank is disposed at a position covered by an auxiliary member cover provided on the other side of the vehicle body in a side view. 4. The auxiliary component arrangement structure of the motor two-wheeled vehicle according to claim 3, characterized in that: The above-mentioned engine is a two-stroke engine, the above-mentioned liquid tank is an oil tank, and the above-mentioned other auxiliary member is a driving device for driving an exhaust timing control valve of the two-stroke engine. 5. The configuration structure of the auxiliary components of the two-wheeled motor vehicle according to claim 1, characterized in that: The auxiliary component cover that covers the above-mentioned liquid tank is divided into a main body and an auxiliary part. An observation window for visually checking the liquid volume in the above-mentioned liquid tank.

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