JPH0355500Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to the body structure of a work vehicle that is equipped with an engine in front of the instrument panel and an openable bonnet that extends to the front edge of the instrument panel.

[Conventional technology]

In the above-mentioned work vehicle, when the engine starts, the engine cooling fan or radiator fan is running, so the hot air in the engine compartment is exhausted outside the machine, but immediately after the engine is stopped, the fan also rotates. When the engine stopped, hot air tended to accumulate in the upper part of the engine compartment.

[Problem that the invention attempts to solve]

Therefore, in order to release the hot air from the upper part of the engine room, it is considered to provide a hole in the upper part of the bonnet, but this has the problem of reducing the rigidity of the bonnet, which is difficult in practice.

Therefore, an object of the present invention is to provide a structure for a work vehicle such as the one described above, which allows hot air accumulated in the upper part of the engine room to be discharged to the outside without reducing the rigidity of the bonnet.

[Means for solving problems]

The feature of the present invention is that the body structure of the work vehicle as described above is configured as follows. In other words, a notch is provided on the front edge of the instrument panel that communicates with the engine room, and an intake port for cooling air for the engine is provided on the lower side of the instrument panel. It is equipped with a cooling fan that discharges air to the front of the bonnet.

[Effect]

If configured as described above, for example, FIGS. 1 and 2
As shown in the figure, the notched recess 23a communicating with the engine room is located at approximately the same height as the top surface of the bonnet 1, so when the engine 2 is stopped (the cooling fan is also stopped), the water remains in the upper part of the engine room. The heated air is discharged through this notched recess 23a.

Furthermore, the bonnet 1 can be opened and closed by inserting the hand into the notched recess 23a.

On the other hand, when the engine 2 is in operation, cooling air is sucked into the engine room from the intake port 24 on the lower side of the instrument panel 23 by the action of the cooling fan, and is discharged to the front of the bonnet 1.

This prevents the hot air that has absorbed the heat from the engine 2 from flowing toward the operator behind the instrument panel 23.
Furthermore, since the aforementioned hot air does not hit the instrument panel 23, there is no risk that the electrical system of the instrument panel 23 will become overheated and develop into a malfunction.

[Effect of idea]

As described above, by providing the notch recess in the instrument panel, a structure has been obtained that allows hot air stagnant in the engine room to be discharged when the engine is stopped without reducing the rigidity of the bonnet.

Furthermore, the notch recess in the instrument panel can also be used as a handle for opening and closing the bonnet, which is advantageous in terms of cost reduction.

Then, while the engine is operating, the hot air that has taken away the heat from the engine does not flow towards the operator or the instrument panel, so the operator can work comfortably and the electrical system of the instrument panel can be prevented from malfunctioning.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings, using a riding lawn mower as an example of a working vehicle.

As shown in Figure 2, the bonnet 1 at the front of the aircraft
An air-cooled engine 2 and a fuel tank 3 are provided inside, and a control handle 4, a driver's seat 5,
The machine body, which has a control section 7 equipped with left and right flat decks 6, is supported by front and rear wheels 8 and 9 to be able to travel for reaping. Left and right rear wheels 9,9
Grass collection duct 11 located between and extending rearward.
A riding lawn mower is also provided with a grass collection container 12.

To explain the transmission mechanism in detail, the engine 2
There are output pulleys 1 in two stages, upper and lower, on the downward output shaft 13.
4 and 15 are fixed, and a lower output pulley 15 and an input pulley 16 fitted to the input shaft of the mower 10 are connected by a belt 17 to constitute a working device transmission mechanism. On the other hand, the upper output pulley 1
4 is an input pulley 20 of the transmission case 19 and belts 21, 22 via a belt continuously variable transmission 18.
A traveling transmission system is constructed so as to be able to drive rear wheels 9, 9 which are pivotally supported at the lower end of the transmission case 19.

Next, the structure of the vicinity of the instrument panel 23 of the control section 7 will be described in detail.As shown in FIG.
The bonnet 1, which covers up to the leading edge, is configured to be able to swing open and close around a horizontal axis fulcrum P at the front of the fuselage, and a cutout recess 23a is provided at the center of the leading edge of the instrument panel 23, which communicates with the upper part of the engine room. be. When the engine room 2 is started, cooling air flows in from the air intake port 24 below the instrument panel 23, which is covered with a dustproof rope, due to the suction action of a cooling fan (not shown) installed in the engine 2, and the engine 2 is started. After cooling, it is discharged to the front and lower part of the engine 2.

When the engine is stopped, the hot air remaining in the upper part of the engine room escapes upward through the notch recess 23a.

[Brief explanation of the drawing]

The drawings show an embodiment of the body structure of a working vehicle according to the present invention, and FIG. 1 is a perspective view of the vicinity of the control section as seen diagonally from the rear, and FIG. 2 is an overall side view of the riding lawn mower. 1...bonnet, 2...engine, 23...
Instrument panel, 23a...notch recess, 24...intake port.

Claims (1)

[Scope of utility model registration request] Engine 2 and instrument panel 2 in front of instrument panel 23
3. The vehicle body structure of a work vehicle is equipped with an openable/closeable bonnet 1 that extends to the front edge, and a cutout recess 23a that communicates with the engine compartment is provided at the front edge of the instrument panel 23.
and a cooling air intake port 24 for the engine 2 on the lower side of the instrument panel 23, and a cooling fan that is driven by the engine 2 to take in cooling air from the intake port 24 and discharge it to the front of the bonnet 1. The body structure of the work vehicle is equipped with.