JPH03292274A - Bonnet mechanism for tractor - Google Patents

Abstract

PURPOSE:To perform free design of the outer shape of a bonnet by containing a bonnet frame, supporting parts in the vicinity of the bonnet, in the bonnet, and preventing protrusion of the shape to the outside. CONSTITUTION:A dashboard side plate 30 is located to the side of a dashboard 6, and a pivotal support part 23 of a bonnet 1 is disposed to the front of the dashboard 6. Meanwhile, a fuel tank placing rest 35 is mounted on the front end of a clutch housing, and a fuel tank 2 is placed on the upper surface of the fuel tank placing rest 35. A bonnet frame 31 is spanned in a manner to cover the periphery of the fuel tank 2 therewith. Namely, a square frame is formed with a bonnet frame 31 and the fuel tank placing rest 35, and the fuel tank 2 is arranged therein. The dashboard 6 and dashboard side plates 30 and 30 are secured to the bonnet frame 31, and a dashboard rear face plate 33 is mounted on the rear surface of the dashboard face plate.

Description

[Detailed description of the invention] (b) Industrial application field The present invention relates to a support mechanism for a tractor hood.

(B) Prior Art Conventionally, in the hood of a tractor, a technique is known in which a frame structured like a mouth is disposed at the rear end of the ceiling bonnet at the connection part with the dash board.

For example, Utsukai Showa 61-. This is similar to the technique described in Japanese Patent No. 111832.

(c) Problems to be Solved by the Invention However, in the conventional technique, the mouth-shaped frame is exposed to the outside of the bonnet, so the shape of the frame appears as the shape of the bonnet, reducing design performance. The problem was that it was not possible to diversify the design.

The present invention is constructed such that a bonnet frame that supports parts near the bonnet is housed inside the bonnet so that its shape does not appear outside.

In addition, since the frame was conventionally exposed to the outside, the dash board attached to the frame was box-shaped so that it could be fitted from the rear of the frame, and the side plates of the dash board were also integrated with the dash board. It had been done.

Therefore, the shape of the side plates of the dash board was limited to flat plates, and the design was inferior.

In order to improve this point, the dash board and dash board side plates are constructed separately, and only the dash board side plates can be retrofitted from the side.

In addition, in the past, since the frame was exposed outside the bonnet, it was not possible to use the frame as a pivot point for the ceiling bonnet. It was designed to rotate up and down.

Therefore, since the pivot point of the ceiling bonnet was provided at the front of the bonnet, the mounting position of the air cleaner and the air cleaner was restricted and had to be lowered to the rear, which caused the problem that the overall length of the bonnet became longer. It is.

In the present invention, since the bonnet frame is arranged inside the bonnet and below the dash board, this can be used as a support for the rotation fulcrum of the ceiling bonnet, and the bonnet can be rotated forward. This structure eliminates the need for a pivot point.

In addition, since conventional frames were constructed with square vibrators, etc., the inner part of the frame became narrower, and the outside of the bonnet had to be exposed.However, in the present invention, the bonnet frame is made of a thin, wide plate. The fuel tank has a large internal space, and although it is placed inside the bonnet, it is possible to insert a fuel tank with a sufficient capacity inside the bonnet.

In addition, by supporting the instrument panel, dash board, and the rear of the ceiling bonnet on the bonnet frame placed inside the hood, and using this bonnet frame as a mounting point, other components can be attached using this bonnet frame as a reference. This improves assembly accuracy and support strength.

(d) Means for Solving the Problems The problems to be solved by the present invention are as described above. Next, the means for solving the problems will be explained.

An n-shaped bonnet frame 31 is installed inside the ponne and throat of the tractor, which is constituted by a ceiling bonnet 1, a dash board 6, and the like.

Further, a bonnet frame 31 is installed inside the bonnet constituted by the ceiling bonnet 1 and the dash board 6, and a dash board side plate 30 is installed on the side of the dash board 6.
・30 has been added.

In addition, in a configuration in which the front end of the ceiling bonnet 1 can be rotated and opened about the pivot part 23 at the rear end, the pivot part 23
is arranged above the bonnet frame 31.

Further, a bonnet frame 31 disposed inside the bonnet is made of a thin and wide plate, and the fuel tank 2 is attached to the inside of the bonnet frame 31.

Further, a bonnet frame 31 is installed inside the bonnet, and the dash board 6, the instrument panel 6b, and the ceiling bonnet 1 are supported on the bonnet frame 31.

(E) Embodiment The problems to be solved by the present invention and the means for solving them are as described above.Next, the structure of the embodiment shown in the attached drawings will be explained.

Fig. 1 is a plan view of the bonnet 1 of the tractor, Fig. 2 is a side view, Fig. 3 is a side sectional view showing the bonnet mechanism of the tractor of the present invention, Fig. 4 is a plan view, and Fig. 5 is a dash board. 6 and a side sectional view of the fuel tank 2,
6 is a rear view of the fuel tank 2 and bonnet frame 31, FIG. 7 is a side sectional view of the pivot portion 23 of the ceiling bonnet 1, FIG. 8 is a plan view, FIG. 9 is a rear view, and FIG. 11 is a side view of the dash board 6, FIG. 12 is a rear view of the dash board rear plate 33, FIG. 13 is a side view, FIG. 14 is a top view, and FIG. 15 is a bonnet frame. Rear view of 31, 1st
Figure 6 is a plan view, Figure 17 is a side view, and Figure 18 is a side view.
19 is a rear view, FIG. 20 is a front view, FIG. 21 is a bottom view, FIG. 22 is a top view, and FIG. 23 is a plan view of the tank cover 38. FIG. 24 is a front view as well.

The overall structure of the bonnet will be explained with reference to FIGS. 1 and 2.

On the side of the dash board 6, there is a dash board side plate 30.
30 is attached, and the pivot portion 23 of the bonnet 1 is configured in the front part of the dash board 6. The bonnet is composed of a ceiling bonnet 1 whose upper part can be easily opened and closed, and lower bonnets 9 forming left and right side plates.

The front end of the ceiling bonnet 1 can be rotated vertically and opened, but the lower bonnets 9 are normally fixed with bolts and can be opened only for necessary inspections.

A front grill F is arranged in front of the lower bonnets 9, 9, a front axle bracket 13 is arranged at the bottom, and a muffler cover 9 is arranged below the lower bonnet 9.
b, and an exhaust port 9a.

Next, explanation will be given with reference to the drawings of FIGS. 3 and 4.

A clutch housing 17 is attached to the rear of the engine E, and a transmission case is attached to the rear of the clutch housing 17.

A steering gear box 18 is mounted on the upper part of the clutch housing 17, and a steering gear box 18 is mounted on the upper part of the clutch housing 17.
9 are erected.

A dash board 6 is provided in front of the steering handle 19, and a fuel tank 2 is housed inside the dash board 6.

As shown in FIGS. 1 and 2, dash board side plates 30 are attached to the left and right sides of the dash board 6, and a dash board rear plate 33 is attached to the rear surface.

The rear end of the bonnet 1 is pivotally supported on the dash board 6 by a pivot 23, and the front end of the bonnet 1 can be rotated upward and opened. An open state support rod 21 that supports the engine E in the open state is housed in the upper part of the engine E.

A front axle bracket 13 projects forward from the cylinder case at the bottom of the engine E. A radiator 3 is disposed above the front axle bracket 13 in front of the engine E, and a battery is placed in front of the radiator 3. 5 is placed.

An air cleaner 4 is disposed above the battery 5, and air is sent from the air cleaner 4 to an intake silencer 7 through a pipe, and further to an intake port of the engine E.

Further, an exhaust muffler 8 is disposed on the left side above the engine E within the ceiling bonnet 1. An exhaust pipe 16 is extended to the tip of the exhaust muffler 8. The exhaust pipe 1
6 descends from an exhaust muffler 8 and discharges exhaust gas downward from exhaust ports 9a of lower bonnets 9 arranged on the left and right sides of the bonnet 1. A muffler cover 9b is constructed on the lower bonnet 9 around the exhaust pipe 16.

Further, a shielding plate 24 is arranged to shield between the fuel tank 2 and the engine E, and at the upper edge of the shielding plate 24,
A seal member 22 is fitted and comes into contact with an elastic contact member provided on the inner surface of the bonnet 1 to prevent warm air after cooling the engine from reaching the fuel tank 2.

A radiator subtank 10 for supplementing the natural decrease of cooling water in the air cleaner 4 is arranged above the engine E and between the exhaust muffler 8 and the intake silencer 7.

Extending the periphery of the radiator fan 20 provided at the rear of the radiator 3 to the ceiling bonnet l-1 and the lower bonnets 9, 9, and attaching a sealing member 11 to the extended portion,
The sealing member 11 is brought into contact with elastic contact members 15 attached inside the ceiling bonnet 1 and lower bonnets 9, 9 to shield hot air.

5 and 6, a fuel tank mounting base 35 is installed above the front end of the clutch housing 17, and the fuel tank 2 is mounted on the upper surface of the fuel tank mounting base 35.

A mouth-shaped bonnet frame 31 is installed so as to cover the periphery of the fuel tank 2.

Mouth-shaped bonnet frame 31 and fuel tank mounting stand 35
This forms a rectangular frame, within which the fuel tank 2 is placed.

A dash board 6 and dash board side plates 30 are fixed to the bonnet frame 31, and a dash board rear plate 33 is attached to the rear surface of the dash board, thereby forming a dash board portion as a whole.

Further, an instrument panel 6b is attached to the dash board 6, and the instrument panel 6b also ends up on the bonnet frame 3.
This means that it is supported by 1.

The fuel supply port 36 protrudes significantly upward from the fuel tank 2 and is disposed so as to penetrate through the tank cover 38. The tank cover 38 has an oil collection groove 38a and a collection pipe insertion hole 38b as shown in FIGS. 23 and 24, and has an oil collection pipe 39 extending therethrough as shown in FIG. The tank cover 38 projects from the dash board 6 independently of the ceiling bonnet 1, and the ceiling bonnet 1 has an avoidance recess 1a in which the ceiling bonnet 1 avoids only the tank cover 38. A pivot portion 23 and a pivot bracket 34 are constructed at the rear portion of the avoidance recess 1a, and the pivot bracket 34 supporting the pivot portion 23 is fixed on the bonnet frame 31.

Therefore, the pivot portion 23 of the ceiling bonnet 1 is connected to the fuel supply port 36.
It is located further back. 37 is an oil filter arranged inside the fuel supply port 36.

As shown in FIGS. 10 and 11, a mounting bracket 6a is protruded from the front end of the dash board 6, and the mounting bracket 6a is also fixed to the upper surface of the bonnet frame 31. Also, the instrument panel 6b is the dash board 6.
It is attached and supported.

Further, as shown in FIGS. 15 to 17, a mounting portion 32 is provided protruding from the bonnet frame 31, and a dash board side plate 30 is attached to the mounting portion 32 from the side.
・The part of bolt hole 30c of No. 30 is fixed.

The dash board side plates 30 are configured in a circular arc shape. Further, the attachment portion 30a at the rear end of the dash board side plates 30, 30 is fixed to the attachment portion on the upper part of the steering gear box 18, together with the dash board rear plate 33.

As shown in FIG. 5, the mounting edge 2a of the fuel tank 2 is fixed to a tank bracket 31a provided on the rear surface of the bonnet frame 31 with bolts. Further, a shielding plate 24 is attached to the front surface of the bonnet frame 31, and a sealing member 22 is fitted onto the upper surface of the shielding plate 24.

(F) Effects of the Invention Since the present invention is constructed as described above, it has the following effects.

As claimed in claim (1), inside the hood of the tractor constituted by the ceiling bonnet 1 and the dash board 6, etc.,
Since the mouth-shaped bonnet frame 31 is installed internally, the mouth-shaped frame is exposed to the outside of the bonnet, which occurred in the conventional technique described in Utility Model Application Publication No. 51-130022. This solves the problem of degrading the design performance and not being able to diversify the design because it appears in the shape of the bonnet.

That is, the present invention is configured such that a bonnet frame that supports parts near the bonnet is housed inside the bonnet so that its shape is not exposed to the outside. As a result, the shape of the bonnet frame 31 does not appear in the parts of the ceiling bonnet 1 and the dash board side plates 30, 30 that are exposed to the outside, so the outer shape of the bonnet can be designed freely.

Further, since the bonnet frame 31 is disposed inside the bonnet, it can be constructed from a thin plate with a wide shape, and the support member can be improved in strength and takes up less space.

As claimed in claim (2), since the dash board side plates 30 are attached to the sides of the dash board 6, the frame is exposed to the outside, which is a conventional problem, so the part of the dash board attached to the frame is In order to allow installation from the rear of the frame, it has a box-shaped configuration, and the side plates of the dash board were also integrated with the dash board, so the shape of the side plates of the dash board was also limited to a flat plate, which was inferior in terms of design. We were able to resolve the issue.

That is, by configuring the dash board and the dash board side plate separately, and by making it possible to retrofit only the dash board side plate from the side, the shape of the dash board side plate is not limited by the shape of the frame or the dash board.
It has become possible to configure it freely, and it has become possible to add it later as a free shape with a high degree of design.

Furthermore, by making the dash board side plates removable, the interior of the dash board 6 can be inspected and repaired.

According to claim (3), in the structure in which the front end of the ceiling bonnet 1 can be rotated and opened about the pivot part 23 at the rear end, the pivot part 23 is disposed above the bonnet frame 31, so that Because the frame is exposed outside the bonnet, which is a technical defect, it is not possible to use the frame as a pivot point for the ceiling bonnet, so a pivot point is provided at the front and the rear end is moved up and down. Since the structure was configured to rotate, the pivot point of the ceiling bonnet was provided at the front of the bonnet, which limited the mounting position of the air cleaner and battery, which solved the problem of having to lower it to the rear. It was completed.

That is, in the present invention, since the bonnet frame is disposed inside the bonnet and below the dash board, this can be used as a support for the rotation fulcrum of the ceiling bonnet.
The bonnet can now be pivoted forward, eliminating the need for a pivot at the front of the bonnet.

As a result, the placement positions of the battery 5 and the air cleaner 4 are no longer restricted by the pivot point of the ceiling bonnet provided at the front.

As claimed in claim (4), the bonnet frame 31 disposed inside the bonnet is made of a thin and wide plate, and the fuel tank 2 is mounted inside the bonnet frame 31, so that the frame 31, which is a problem with the conventional technology, can be avoided. Since the frame was made of square pipes, the inner part of the frame was narrower, which solved the problem of having to expose the outside of the bonnet.

That is, in the present invention, the bonnet frame is constructed of a thin and wide plate to increase the internal space, and although it is placed inside the bonnet, a fuel tank with sufficient capacity can be inserted inside the bonnet frame. It became possible.

As in claim (5), the bonnet frame 31 is installed inside the bonnet 7, and the dash board 6, the instrument panel 6b, and the ceiling bonnet 1 are supported on the bonnet frame 31, so that the bonnet disposed inside the bonnet By supporting the rear part of the instrument panel, dash board, and ceiling bonnet on the frame and using this bonnet frame as a mounting point, other parts can be attached using this bonnet frame as a reference, improving assembly accuracy. This made it possible to improve the support strength.

[Brief explanation of the drawing]

Fig. 1 is a plan view of the bonnet 1 of the tractor, Fig. 2 is a side view, Fig. 3 is a side sectional view showing the bonnet mechanism of the tractor of the present invention, Fig. 4 is a plan view, and Fig. 5 is a dash board. 6 and a side sectional view of the fuel tank 2,
6 is a rear view of the fuel tank 2 and bonnet frame 31, FIG. 7 is a side sectional view of the pivot portion 23 of the ceiling bonnet 1, FIG. 8 is a plan view, FIG. 9 is a rear view, and FIG. 11 is a side view of the dash board 6, FIG. 12 is a rear view of the dash board rear plate 33, FIG. 13 is a side view, FIG. 14 is a top view, and FIG. 15 is a bonnet frame. Rear view of 31, 1st
Figure 6 is a plan view, Figure 17 is a side view, and Figure 18 is a side view.
19 is a rear view, FIG. 20 is a front view, FIG. 21 is a bottom view, FIG. 22 is a top view, and FIG. 23 is a plan view of the tank cover 38. FIG. 24 is a front view as well.・Ceiling bonnet ・Fuel tank ・Dashboard board ・Instrument panel ・Pivotal part ・Dashboard board side plate ・Bonnet frame 33 ・Dashboard rear plate 38 ・Tank cover

Claims (5)

[Claims] (1) A tractor bonnet mechanism characterized in that a ■-shaped bonnet frame is installed inside the tractor bonnet, which is composed of a ceiling bonnet, a dashboard, etc. (2) A bonnet mechanism for a tractor, characterized in that a bonnet frame is installed inside the bonnet constituted by a ceiling bonnet, a dashboard, etc., and a dashboard side plate is attached to the side of the dashboard. (3) A bonnet mechanism for a tractor, characterized in that the front end of the ceiling bonnet can be rotated and opened about a pivot at the rear end, and the pivot is disposed above the bonnet frame. (4) A bonnet mechanism for a tractor, characterized in that a bonnet frame disposed inside the bonnet is constituted by a thin wide plate, and a fuel tank is attached to the inside of the bonnet frame. (5) A bonnet mechanism for a tractor, characterized in that a bonnet frame is provided inside the bonnet, and a dashboard, an instrument panel, and a ceiling bonnet are supported by the bonnet frame.