JP2876380B2 - Fuel tank support structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a support structure for a fuel tank disposed adjacent to an engine body.

[0002]

2. Description of the Related Art A stay is provided on an engine supported on an upper part of a work machine, and a fuel tank supporting structure for fixing a fuel tank mounted on an upper surface of the stay between the stay and a bonnet is realized. This is proposed in Japanese Patent Laid-Open No. 58-63329.

[0003]

The conventional fuel tank support structure described above not only adversely affects the durability of the fuel tank because the vibration of the engine is directly transmitted to the fuel tank via the stays. There is a problem that a stay and bolts for fixing the stay are required, and the number of parts increases.

The present invention has been made in view of the above circumstances, and has as its object to support a fuel tank with a small number of parts in a vibration-proof manner.

[0005]

Means for Solving the Problems In order to achieve the above object, the invention described in claim 1 provides a fuel tank supporting structure disposed adjacent to an engine main body, the fuel tank supporting structure for the engine main body and the fuel tank. A plurality of engaging portions are provided on an inner surface of a divided engine cover that partially covers the engine cover, and a plurality of engaged portions in which the plurality of engaging portions elastically engage with each other are provided in the fuel tank. In a state where the two divided engine covers are integrated and attached to the engine body ,
By the engagement between the plurality of engagement portions and the plurality of engaged portions,
Put the fuel tank on the front, back, left, right, and top
The fuel tank is supported on the engine cover by positioning the fuel tank in the opposite direction .

[0006] The invention described in claim 2, in addition to the first aspect, fuel under the fuel supply port a recess of the annular tank, bisected engine on the inside of the recess An edge of the opening formed in the mating surface of the cover is loosely fitted upward, and a drain rib located outside the edge is projected downward in the concave portion.

[0007]

Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIGS. 1 to 4, a walking type cultivator T as a working machine is provided with an engine cover 1 made of synthetic resin which covers the outer periphery of an engine.
A tillage part R constituting a working part is provided below the steering handle mounting member 2 and the transmission case 3 via a steering handle mounting member 2, and a steering handle 4 extending rearward and upward is provided at an upper end of the steering handle mounting member 2. The tilling part R includes a tilling shaft 5 extending in the left-right direction, a pair of left and right inner rotors 6 and 6 and a pair of left and right outer rotors 7 and 7 attached to the tilling shaft 5.
And Each inner rotor 6 has four tilling claws 6 ₁ ,
6 _1; provided with a 6 _2, 6 _2, the two tilling claws ₆₁ and 62 ₁ is bent in the lateral direction inside the remaining two tilling claws 6 _2, 6 ₂ bent outward in the left-right direction Can be
Each of the outer rotors 7 has four tilling claws 7 ₁ ..., And these tilling claws 7 ₁ . The steering handle 4 formed in a U-shape has a joint 8 at its lower end and a bolt 10 having a handle 9.
As a result, it is detachably fixed to the upper end of the steering handle mounting member 2. One of the handle grips 11 provided on the upper end of the steering handle 4 is provided with a throttle lever 13 connected to a cab throttle of the engine via a throttle wire 12. The throttle wire 12
Handle post 31 and engine covers 45, 4 described later
It is connected to the cab throttle through cooling air suction ports 69, 69 provided between the six.

As shown in FIG. 6, the engine E is a single cylinder 2
The cycle engine is provided with an engine body 17 including a crankcase 15 and a cylinder barrel 16.
The engine body 17 is disposed in the front-rear direction with the cylinder barrel 16 positioned on the front side and the crankcase 15 positioned on the rear side. A carburetor 18 is provided on a rear surface of the crankcase 15, and a recoil starter 20 having a handle 19 (see FIG. 5) exposed to the outside of the engine cover 1 is provided on an upper surface of the crankcase 15. Air guide duct 21 provided integrally with the lower portion of the engine body 17, an inlet opening 21 ₁ located on the left and right sides and the rear of the crankcase 15, the cylinder barrel 16
An intermediate aperture 21 ₂ located in the lower portion of the cylinder barrel 1
And an outlet opening 21 ₃ located at the top of the 6.

The engine E is supported on an engine bed 22 having an open upper surface. A flywheel 25 and an automatic centrifugal clutch 26 are supported on a crankshaft 24 projecting downward from the crankcase 15 of the engine E and supported by ball bearings 23 so as to be located inside the engine bed 22. Flywheel 25
Annular cooling fan 27 attached to the upper surface faces the inlet opening 21 ₁ and the intermediate aperture 21 ₂ of the air guide duct 21.

The steering handle mounting member 2 includes a plate-shaped mounting plate 29 fixed to the lower surface of the engine bed 22 with bolts 28, a pipe-shaped transmission connecting member 30 projecting downward from the lower surface of the mounting plate 29. A pipe-shaped handle post 31 extending rearward and upward from a rear portion of the mounting plate 29; a lower surface of the mounting plate 29;
0 and a plate-like connection reinforcing plate 32 for integrally connecting the rear surface of the handle post 31 and the front surface of the lower end of the handle post 31.

As is apparent from FIG. 4, the connecting reinforcing plate 32 not only reinforces the steering handle mounting member 2 to strengthen the support of the steering handle 4 but also attaches the left and right inner rotors 6,6. the located tilling claws ₆₁ ... facing portion of which is curved inwardly provided two each tilling claws ₆₁ ...
It has the function of dropping pebbles S and mud sandwiched between them. This effectively prevents the inner rotors 6, 6 from being stuck during tilling.

Returning to FIG. 6, the inside of the transmission case 3 attached to the transmission connecting member 30 of the steering handle attaching member 2 via the coupling member 33 at the lower end thereof has a cylindrical shape through a pair of upper and lower ball bearings 34,34. A worm 35 is supported. The cylindrical worm 35 is connected via a transmission shaft 38 to a power take-out shaft 37 of the automatic centrifugal clutch 26 supported by a ball bearing 36. The cylindrical worm 35 meshes with a worm wheel 39 provided on the tilling shaft 5 that supports the inner rotors 6,6 and the outer rotors 7,7. Therefore, the driving force of the engine E is the crankshaft 2
4, transmitted to the tilling shaft 5 via the automatic centrifugal clutch 26, the transmission shaft 38, the cylindrical worm 35, and the worm wheel 39, and drive the inner rotors 6, 6 and the outer rotors 7, 7 provided on the tilling shaft 5. The cylindrical worm 35 and the worm wheel 36 constitute a worm gear.

As is apparent from FIGS. 6 and 13, a resistance bar mounting member 40 having a U-shaped cross section is welded to the rear surface of the handle post 31, and is supported by the resistance bar mounting member 40. that L-shaped resistor bar 41 includes a mounting portion 41 ₁ slidably fitted to the resistive rod mounting member 40,
A resistor unit 41 ₂ which extending rearward and downward from the mounting portion 41 _1. By resistance rod mounting member 40 to a plurality of pin holes 41 ₃ ... and formed into the pin hole 40 ₁ and the mounting portion 41 ₁ of the are passed through the pin 42 and fixed by a clip 43, the resistance bar 41 is adjustably vertically positioned Fixed. In a state where the resistance bar 41 is fixed to the resistance bar mounting member 40, the mounting portion 41
₁ Front are in close contact along the rear face of the handle post 31 (see FIGS. 1 and 6). Thus, since the load resistance section 41 ₂ receives a resistance rod 41 is transmitted to the handle post 31 directly, resistance small number of parts simple structure rod 41
Can be firmly supported.

Next, an engine cover 1 for covering the engine E
The structure of will be described.

The engine cover 1 made of a synthetic resin is composed of a left cover 45 and a right cover 46, which are divided into left and right parts with a center line extending in the front-rear direction in the body traveling direction. The left cover 45 and the right cover 46 are spigot-fitted to each other at their mating surfaces on the outer periphery, and five bolts 47 to 51
(See FIG. 6). On the upper part of the engine cover 1, a carrying handle 52 for an operator to carry the cultivator T is formed integrally. The structure of the carrying handle 52 is such that a channel-shaped space is penetrated in the engine cover 1 above and below the crankshaft 24 of the engine E in the left-right direction, and the rear portion is inclined so as to be higher than the front portion. When carrying the cultivator T, it is easy to grasp. In addition, since the carrying handle 52 protrudes above the engine cover 1, it serves as a guide for determining the traveling direction of the cultivator T, so that the straightness of the cultivator T can be improved and the direction can be easily corrected.

As is clear from FIGS. 6 and 8, a stay 55 is fixed to the front wall surface of the crankcase 15 via three bolts 53 and a connecting member 54. Stay 5
Engaging portion 55 ₁ formed on the upper end of the 5 engine cover 1
The left cover 45 and the right cover 46 are supported by the stay 55 by bolts 47 penetrating through a pair of bosses 56 and 57 projecting from the inner surfaces of the bosses.
As is clear from FIGS. 6 and 7, the crankcase 15
A stay 58 is provided upright on the rear upper wall surface, and the stay 58 and a boss 5 protruding from the inner surface of the engine cover 1 are provided.
9, the left cover 45 and the right cover 46 are supported by the stay 58. Thus,
The upper portion of the engine cover 1 is supported by the engine body 17 via two bolts 47, 48 and two stays 55, 58. With this structure, the carrying handle 52
The load applied to the carrying handle 52 can be supported by the engine E via the stays 55 and 58 instead of the engine cover 1 itself.

As is apparent from FIGS. 6 and 10, the rear upper ends of the left cover 45 and the right cover 46 are integrally connected by a bolt 49 penetrating a boss 60 projecting from the inner surface thereof. As further apparent from FIGS. 6 and 9, the front end of the engine bed 22 are projecting bracket 22 ₁ having a groove which is open downwardly, the left cover 45 and right cover 46 of the bracket 22 ₁ groove Ribs 61
Are joined together by bolts 50 in a state where they are fitted. Similarly, the bracket 22 _{and second} grooves projecting from the rear end of the engine bed 22 are coupled together by the rib 62 is fitted 51 of the left cover 45 and right cover 46. Thus,
The rear parts of the left cover 45 and the right cover 46 have one bolt 4
9, the left cover 45 and the right cover 4
6 is an engine bed 2 with two bolts 50 and 51.
2 supported.

As described above, by completely covering the engine E with the engine cover 1 divided into two parts, the number of parts can be reduced as compared with the case where the engine E and its accessories are covered with separate covers. The sealing of the mating surfaces can be easily performed. Further, it is possible to prevent the noise of the engine E from leaking to the outside, prevent the mud and dust from adhering to the engine E, and improve the appearance.

As is clear from FIG. 1, the position of the center of gravity CG of the cultivator T is located below and below the carrying handle 52. Therefore, as shown in FIG. 14, when the operator grips the carrying handle 52 and transports the cultivator T, the wide tilling portion R is positioned forward of the operator's body in the left-right direction, and the tilling portion R Transportation is facilitated by avoiding contact with the body. Further, the steering handle attachment member by loosening the nut 28 ₁ screwed on the bolt 28 in FIG. 6 2
The engine E covered by the engine cover 1 is separated from the engine bed 22 so that the engine E covered by the engine cover 1 can be attached to the steering handle mounting member 2, the transmission case 3, the cultivator R, and the steering handle 4.
And can be removed from the resistance bar 41. This makes it possible to share the engine E for applications other than the tiller T, for example, a lawnmower, a sweeper, a mower, a chain saw, and the like. In addition, even when the engine E is detached, it can be easily transported by using the carrying handle 52. Further, since the flat engine bed 22 is located on the lower surface of the engine cover 1, the engine E can be stably mounted on the ground or floor without falling down.

Next, the cooling structure of the engine E mounted inside the cover 1 will be described.

As shown in FIGS. 5 and 6, the left cover 45
Inside the engine cover 1 including the right cover 46 and a muffler 65 having an exhaust port 65 ₁ directed forward, an exhaust pipe 66, a cylinder barrel 16, a crankcase 15, a carburetor 18, and an air cleaner 67 are directed from front to rear. The carburetor 18 and the air cleaner 67 are sequentially arranged.
A fuel tank 68 is disposed at an upper part of the engine so that an upper half thereof is exposed from the engine cover 1.

As described above, the engine body 17 is placed vertically so that the cylinder barrel 16 and the crankcase 15 are positioned in the front-rear direction, and the muffler 65 and the fuel tank 68 are provided in front and rear of the cylinder barrel 16 respectively. In addition, since the carburetor 18 and the air cleaner 67 are provided below the fuel tank 68, the width in the left-right direction of the engine E including the accessories, that is, the width in the left-right direction of the engine cover 1 is reduced as much as possible. It becomes possible. as a result,
When working in a small space such as a tea plantation, efficient work can be performed by avoiding contact between the aircraft and crops.

An opening extending in the vertical direction is formed at the mating surface of the left cover 45 and the right cover 46 at the rear end of the engine cover 1.
Fits in the lower half. A pair of left and right cooling air inlets 69, 69 are formed between the handle post 31 and the edge of the opening (see FIGS. 5 and 6). The ribs 70, 70 projecting inward from the lower part of the opening approach the outer periphery of the handle post 31 to block the flow of air, so that the cooling air suction ports 69, 69 can be compared at the rear end of the engine cover 1. (See FIG. 4) at a higher position (between the resistance bar mounting member 40 and the bolt 49 connecting the engine cover 1). Accordingly, when the cooling air is sucked into the inside of the engine cover 1 from the cooling air suction ports 69, 69, relatively clean air with little dust and separated upward from the tilling portion R can be sucked. On the other hand, the front end of the engine cover 1 is formed louvered cooling air discharge port 71 is an exhaust port 65 ₁ of the muffler 65 to the hole formed in the lower portion of the cooling air discharge port 71 is opposed I do.

As described above, since the cooling air suction ports 69, 69 are formed between the rear ends of the left cover 45 and the right cover 46, when the resin left cover 45 and the right cover 46 are formed by a mold. In addition, the cooling air suction ports 69, 69 can be formed using a mold having a simple structure and without performing machining after molding.

As apparent from FIGS. 6 to 8, partitions 72 and 73 extending vertically are integrally formed on the inner surfaces of the left cover 45 and the right cover 46, respectively. Left cover 4
The partition wall 72 formed at 5 has a shape along the outer shape of the stay 55 at an upper portion thereof, and extends downward from the partition wall with a substantially constant width. On the other hand, the partition 73 formed on the right cover 46 has a shape along the outer shape of the stay 55 at an upper portion thereof, and
7 extends downward along the boundary between the crankcase 15 and the cylinder barrel 16. The interior of the engine cover 1 is partitioned by the partition walls 72, 73 into a rear chamber 74 on the side of the cooling air inlets 69, 69 and a front chamber 75 on the side of the cooling air outlets 71, 71 (see FIG. 6). an inlet opening 21 ₁ of the guide duct 21 open to the chamber 74, the outlet opening 21 the _third guide duct 21 into the front chamber 75 is opened.

Thus, the crankshaft 2 of the engine E
4 and a cooling fan 27 integral with the flywheel 25
Is rotated, the negative pressure causes the cooling air inlets 69 and 6 to rotate.
Fuel tank 68 is air sucked from 9 flows into the rear chamber 74, after cooling the carburetor 18 and the crankcase 15, the cooling automatic centrifugal clutch 26 and flows from the inlet opening 21 ₁ in the interior of the air guide duct 21 I do. Wind guide duct 21
Cooling air passing through the intermediate opening 21 ₂ in the cylinder barrel 16
Flows into the front chamber 75 from the outlet opening 21 ₃ is cooled, where it is the exhaust pipe 66 and the muffler 65 is cooled discharged from the cooling wind exhaust port 71 to the outside of the engine cover 1.

As described above, the low-temperature fuel tank 68 and the carburetor 18 are provided on the cooling air suction ports 69, 69 side, and the intermediate temperature crankcase 15 and the automatic centrifugal clutch 26 are provided on the downstream side. Further, since the high-temperature cylinder barrel 16, the exhaust pipe 66, and the muffler 65 are disposed on the downstream side of the cooling air discharge ports 71, 71, the heat of the cylinder barrel 16, the exhaust pipe 66, and the muffler 65 causes the fuel tank 68 and the muffler 65 to generate heat. Not only is it difficult to reach the carburetor 18, but even if the temperature of the cooling air gradually rises along the flow path of the cooling air,
The temperature difference between the cooled portion and the cooling air is always ensured, and all the cooled portions can be effectively cooled. In addition, the cooling air is sucked in from the rear of the aircraft where the operator is located, and the exhaust gas and the cooling air whose temperature has risen are discharged forward from the front of the aircraft on the side opposite to the operator. There is no risk of deteriorating the working environment or damaging the crops on the ground.

Next, the structure for supporting the fuel tank 68 will be described.

As shown in FIG. 6, but the fuel tank 68 are integrally molded of synthetic resin, the fuel supply port 68 ₁ is provided on its upper surface. The lower portion of the fuel tank 68 and the carburetor 18 are connected via a fuel tube 81,
A fuel cock 82 is provided in the middle of the fuel tube 81. As shown in FIG. 10 and FIG.
The outer periphery of the 8 is formed with a U-shaped groove 68 _2, the engine cover 1 is the lower portion than the concave groove 68 ₂
And the upper portion is exposed upward from the engine cover 1. Incidentally, the rear groove 68 ₂ is a cross-sectional U
It is not shaped like a letter and is open on the lower side (see the right-hand cross section in FIG. 11).

As is apparent from FIG.
Fitted to the support pin 46 ₁ projecting from the, and the left cover 45
Grommet 83 held in support hole 45 ₁ formed in
But it fitted to the front end of the concave groove 68 _2. Also on the outer periphery of the boss portion 60 projecting from the inner surface of the engine cover 1 is left-right pair of the grommet 84, 84 is held, these grommets 84 and 84 are in the recesses 68 ₃ formed in the lower part after the fuel tank 68 Fit. Further, a pair of projections 68 projecting from the left and right sides of the fuel tank 68 _4, 68 _4, fitted to a pair of rubber bushings 85, 85 which is held on the inner surface of the left cover 45 and right cover 46. Thus, the fuel tank 68 is moved back and forth by three grommets 83;
And the rubber grommet 83; 84, 84 and the rubber bush 8
5 and 85 support the engine cover 1 in a floating manner. Thereby, the fuel tank 6 can be formed with a small number of parts.
Vibration transmission from the engine E to the fuel tank 68 can be effectively prevented while supporting the fuel tank 8 stably. Thus
The grommet 83, 84 and the rubber bush 85
Are a plurality of the present invention provided on the inner surface of the engine cover 1.
And the concave groove 68 ₂ , the concave portion 6
8 ₃ and the protrusion 68 _4, before provided to the fuel tank 68
According to the present invention, the plurality of engaging portions are each elastically engaged.
It constitutes an engaging portion.

As is clear from FIG. 11, the fuel tank 6
Edge 45 ₂ halves from the engine cover over the opening formed in the left cover 45 and right cover 46 to protrude above the 8, 46 ₂ near the concave fuel tank 68 is bent inwardly and upwardly loosely fitted in a groove 68 in _2. Then, the wall lower surface on the groove 68 ₂ draining rib 68 ₅ is projected downward along the entire length of the concave groove 68 _2. Drainer rib 68 ₅
Are edges 45 ₂ , 46 ₂ of the left cover 45 and the right cover 46
The fuel supply port 68 ₁ of the fuel tank 68 and water droplets flowing down along the side wall of the fuel tank 68
Fuel overflowing from the fall is prevented in drainage rib 68 _5, an arrow of the water droplets and fuel beyond the edge 45 _2, 46 ₂ is prevented from flowing into the engine cover 1 (FIG. 11 A).

Next, the structure of the air cleaner 67 will be described.

As shown in FIGS. 6 and 7, the air cleaner 67 comprises an air cleaner case 86, an air cleaner element 87, and an air cleaner cover 88.
Air cleaner case 86 having a cup shape with a circular cross section
Are integrally protruded inward from the rear side surface of the left cover 45. The opening of the air cleaner case 86 is covered by a detachable air cleaner cover 88 from the outside of the left cover 45, and a dirty chamber 89 is formed outside the air cleaner element 87 housed inside the air cleaner case 86. A clean chamber 90 is formed inside the air cleaner element 87.

A boss 91 for supporting the fuel cock 82 protrudes from the inner surface of the left cover 45. An upper partition rib 92 is formed between the air cleaner case 86 and the upper inner surface of the left cover 45, and a lower partition rib 93 is formed between the air cleaner case 86 and the boss 91. The air cleaner case 86 has a pair of intake holes 8 communicating with the dirty chamber 89 so as to be located in front of the upper partition rib 92 and the lower partition rib 93.
6 ₁ and 86 ₁ are formed, and the clean chamber 90 is connected to the carburetor 18.

The air sucked from the cooling air suction ports 69, 69 by the negative pressure generated by the cooling fan 27
The intake holes 86 ₁ , 86 ₁ of the air cleaner case 86 are blocked by the upper partition rib 92 and the lower partition rib 93.
And flows around the right side of the cover 46 to the front of the upper partition ribs 92 and the lower partition ribs 93, and then flows backward into the dirty chamber 89 from the intake holes 86 ₁ , 86 _1. . As described above, while the air supplied to the air cleaner 67 is diverted, dust contained in the air is dropped to supply clean air, thereby preventing the air cleaner element 87 from being clogged. Then, the air flowing into the dirty chamber 89 passes through the air cleaner element 87 to completely remove dust, and then passes through the clean chamber 90 to the carburetor 1.
8 is supplied.

Even if water enters the engine cover 1 from around the fuel tank 68, the water is blocked by the upper partition rib 92 and the lower partition rib 93 provided on the left cover 45. As a result, the air does not flow into the intake holes 86 ₁ , 86 ₁ of the air cleaner case 86, thereby preventing water from adhering to the air cleaner element 87 and causing clogging.

As described above, since the air cleaner case 86 is formed integrally with the left cover 45, the number of parts such as mounting brackets and bolts can be reduced, and the cost can be reduced. Further, by removing the air cleaner cover 88, the air cleaner element 87 can be easily replaced from the outside of the left cover 45, so that workability is greatly improved. Further, since the left cover 45 supports the air cleaner 67 and the fuel cock 82 and the right cover 46 does not support any accessories, the right cover 46 can be easily removed to easily perform maintenance of the engine E. .

Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above embodiments, and various design changes can be made.

[0040]

As described above, according to the first aspect of the present invention, the engine body and a part of the fuel tank are covered.
Multiple engagement parts are provided on the inner surface of the split engine cover.
And the fuel tank is provided with the plurality of engaging portions.
A plurality of engaged portions each of which elastically engages with each other;
Integrate the divided engine cover into the engine body
In the attached state, the plurality of engaging portions and the plurality of engaged portions
The fuel tank to the engine cover
The engine cover is positioned in front, back, left, right and up and down
To support the fuel tank, the engine cover
Can also function as support means for the fuel tank,
Reduction of fluorinated or parts is attained, yet it is possible to improve the durability of the fuel tank to prevent the vibration of the engine is directly transmitted to the fuel tank. In addition, the plurality of
Since the joint is provided on the inner surface of the engine cover,
Improving the appearance by making the engaging portion invisible from outside
Can be.

According to the invention described in claim 2,
Together to fuel upwardly loosely fitted inside the annular recess formed in the lower side of the fuel supply port of the edge of the opening formed in the mating surface of the engine cover of the tank, draining located outside of the edge in the recess By projecting the rib downward, water and fuel flowing down along the outer surface of the fuel tank are dropped by the draining rib and guided to the outer surface of the engine cover,
Water and fuel can be reliably prevented from flowing into the engine cover.

[Brief description of the drawings]

Fig. 1 Side view of the entire cultivator

FIG. 2 is a view in the direction of arrows in FIG. 1;

FIG. 3 is a view taken in the direction of arrows 3-3 in FIG. 1;

FIG. 4 is an enlarged view in the direction of arrows in FIG. 1;

FIG. 5 is an enlarged view of a main part of FIG. 2;

FIG. 6 is an enlarged sectional view of a main part of FIG. 1;

FIG. 7 is a sectional view taken along line 7-7 of FIG. 6;

8 is a sectional view taken along line 8-8 in FIG. 6;

9 is a sectional view taken along line 9-9 in FIG. 6;

FIG. 10 is a sectional view taken along line 10-10 of FIG. 6;

FIG. 11 is a sectional view taken along line 11-11 of FIG. 6;

FIG. 12 is a sectional view taken along line 12-12 of FIG. 6;

FIG. 13 is a sectional view taken along line 13-13 of FIG. 6;

FIG. 14 is an explanatory diagram of an operation.

[Explanation of symbols]

Reference Signs List 1 engine cover 17 engine body 45 ₂ edge 46 ₂ edge 68 fuel tank 68 ₁ fuel supply port 68 ₂ recess (engaged portion) 68 ₃ recess (engaged portion) 68 ₄ projection (engaged portion) 68 ₅ Drainage rib 83 Grommet (engagement part) 84 Grommet (engagement part) 85 Rubber bush (engagement part)

Claims (2)

(57) [Claims] 1. A two-part engine for covering a part of a fuel tank (68) and an engine body (17) in a support structure of a fuel tank (68) disposed adjacent to the engine body (17). multiple <br/> engaging portion on the inner surface of the cover (1) (83, 84, 85) provided with a fuel tank (68), said plurality of engagement portions (83, 84, 8
5 ) a plurality of engaged portions (68) each of which elastically engages.
_2, 68 _3, 68 ₄₎ is provided, the state attached to the bisected engine body by integrating the engine cover (1) (17), said plurality of engagement
The joining portion (83, 84, 85) and the plurality of engaged portions (68 ₂ ,
68 _3, 68 ₄₎ and the engagement by the fuel tank (6
8) with respect to the engine cover (1)
A support structure for a fuel tank, characterized in that the fuel tank (68) is supported on the engine cover (1) so as to be positioned in the opposite direction . 2. A fuel fuel supply port of the tank (68) (68
₁₎ an annular recess (68 ₂₎ is formed below the inner into two split engine cover of the recess (68 ₂₎ (1)
Were mating surfaces in upward loosely fitted opening edge (45 _2, 46 ₂₎ formed of the edges (4 in the recess (68 ₂₎
5 _2, 46 ₂₎ draining ribs located outside of (68 ₅₎
The support structure for a fuel tank according to claim 1, wherein the protrusion is provided downward.