JPH0796861A - Work vehicle - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a work vehicle in which a driver's floor plate part, a driver's seat support plate part, and a rear wheel fender can be easily integrally molded, and a driver's seat with adjustable front and rear and up and down can be easily obtained. It is in. [Structure] The driver seat support plate portion 8 is formed in a front-lowering inclined posture, and a step portion between the rear wheel fender 4 and a plate portion 9 connecting the driver floor plate portion 2 and the driver seat support plate portion 8 and the driver seat support. While reducing the step between the plate portion 8 and the rear wheel fender 4,
The driving floor plate 2, the driver seat support plate 8 and the rear wheel fender 4 can be integrally molded. An attachment member 21 attached to the driver's seat 3 is attached to the driver's seat support plate portion 8 with attachment bolts 22 and 23. Since the bolt holes of the mounting member 21 are long holes in the front-rear direction of the vehicle body, the driver's seat 3 can be slid forward and backward. Since the mounting member 21 is mounted on the driver seat support plate portion 8 that is inclined forward and downward, when the driver seat 3 is slid and adjusted to the front side, the mounting level thereof is automatically lowered.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a driving floor plate portion, a driving seat support plate portion positioned at a higher level than the driving floor plate portion, and rear wheels located on the left and right sides of the driving seat support plate portion. The present invention relates to a work vehicle in which a fender is integrally molded.

[0002]

2. Description of the Related Art Conventionally, in the above-mentioned work vehicle, a driver's seat support plate portion is formed in a horizontal posture, as disclosed in Japanese Patent Laid-Open No. 4-234908.

[0003]

The floor plate for operation is often formed in a horizontal position or a posture close to that in view of its function. In this case, if the driver's seat supporting plate is formed in a horizontal posture as in the conventional case, the plate portion existing so as to connect both parts between the driving floor plate and the driver's seat supporting plate is in a vertical or near-vertical position. In addition, since the rear wheel fender is often formed in an arc shape or a front downward shape along the wheel, the step between the driver seat support plate portion and the rear wheel fender and the connecting plate The step between the part and the rear wheel fender tended to be large. As a result, there is a problem in that it is difficult to manufacture, such as when deep-drawing is necessary and it is difficult to mold when it is manufactured by press molding of sheet metal. It is an object of the present invention to provide a work vehicle that is relatively easy to manufacture and that has a relatively simple structure for seat mounting, which makes it possible to advantageously adjust the position of the driver's seat.

[0004]

In order to achieve the object of the work vehicle according to the present invention, in the vehicle described at the beginning, the driver's seat support plate portion is located at a lower level toward the front side of the vehicle body. The driver seat is attached to the driver seat support plate through an adjusting mechanism that is formed in an inclined posture and that supports the driver seat so that the driver seat can be slid forward and backward by a slide guide that follows the downward slope of the driver seat support plate. It is characterized by being.

[0005]

Because of the above-described downward tilting posture of the driver seat support plate portion, the arrangement level of the driver seat support plate portion on the front end side is lower than in the conventional case, and the driver floor plate portion and the driver seat support plate portion are connected. The plate portion rises from the driver's floor plate portion toward the driver's seat support plate portion with a gentler inclination than in the past, and the step between the driver's seat support plate portion and the rear wheel fender and the step between the connecting plate portion and the rear wheel fender are increased. The rear wheel fender can be formed in an arc shape or a front downward shape while being smaller than the conventional one.
Also, when the driver's seat is slid forward and backward by the adjusting mechanism, the driver's seat slides along the inclination of the driver's seat support plate due to the slide guide, so that the front side is adjusted,
The seat level is automatically lowered. That is, for example, when the driver's seat is directly bolt-connected to the driver's seat support plate, the bolt hole of the mounting member of the driver's seat or the driver's seat support plate's bolt hole is formed as a long hole in the longitudinal direction of the vehicle body. Only by itself, it becomes possible to automatically change the level according to the front and rear adjustment of the driver's seat. That is, the adjustment mechanism uses the inclination of the driver's seat support plate for changing the level, and changes the level in accordance with the front-rear adjustment of the driver's seat. Moreover,
When the driver's seat is adjusted to the front side, the driver's seat can be adjusted to the front side and changed to the lower level side which is more convenient for the driver to use.

[0006]

EFFECTS OF THE INVENTION Since the step between the driver's seat supporting plate and the rear wheel fender and the step between the connecting plate and the rear wheel fender can be made relatively small, the drawing can be compared when the press sheet metal is used. It became relatively easy to make, because it was shallow and easy to press mold. In addition, the adjustment mechanism uses the inclination of the driver's seat support plate to change the level, so that the seat position can be adjusted simply by sliding back and forth, and the operation is easy.
The adjusting mechanism can be constructed comparatively compactly so that it can be easily produced from this aspect, and can be obtained at low cost.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a driving part having an engine hood 1, a driving floor plate 2 located behind the driving part and a driving part having a driver's seat 3, and positions on the left and right sides of the driver's seat 3. A lawn mowing device 6 is connected between the front and rear wheels of a self-propelled vehicle including a rear wheel fender 4, an engine fuel tank 5 located below the driver's seat 3, and the like so that the lawn mower 6 can be moved up and down by a link mechanism 7. It is configured so that the rotational force of E is transmitted to the lawn mower 6 by a belt,
A riding lawn mower is constructed.

As shown in FIG. 6, the driving floor plate 2 is located immediately in front of the left rear wheel fender 4 and also serves as a step portion for getting on and off the left side floor 2a and the right rear wheel fender. The right side floor 2b is located immediately in front of 4 and also serves as a boarding / alighting step portion, and a center floor 2c that connects the left and right side floors 2a and 2b.

The floor plate 2 for driving and the pair of rear wheel fenders 4, 4 are made of a sheet metal press-molded as shown in FIGS. That is, the press sheet metal is such that the driver seat support plate portion 8 is continuously located between the left rear wheel fender 4 and the right rear wheel fender 4, and the driver seat supporting plate portion 8 is located on both fenders 4, 4. The connecting plate connecting the driver seat supporting plate 8 and the driving floor plate 2 so that the supporting plate 8 is positioned at a higher level than the driving floor plate 2 and at a lower level toward the front side of the vehicle body. The portion 9 is formed so as to be in a rearward rising posture in which the portion 9 rises from the driving floor plate portion 2 toward the driving seat support plate portion 8 at a gentle inclination rather than a right angle. And FIG.
As shown in FIG. 2, the front end side of the driving floor plate portion 2 is rotatably connected to the vehicle body frame 10 via a pair of left and right pivot shafts 11, 11, and the rear end side of the driver seat support plate portion 8 is paired with a left and right pair. The press sheet metal is connected to the vehicle body frame 10 by being connected to the vehicle body frame 10 so as to be able to move up and down through the suspension mechanisms 12, 12. That is, the driving floor plate portion 2 and the driving seat 3 integrally swing up and down with respect to the vehicle body frame 10 about the axial center of the pivot shaft 11 in the lateral direction of the vehicle body, and the running vibration is generated from the driving floor plate portion 2. The transmission from the driver's seat 3 to the driver is also prevented. For that reason, due to the front downward inclination of the driver's seat support plate portion 8,
Since the step between the driver's seat support plate portion 8 and the rear wheel fender 4 and the step between the connecting plate portion 9 and the rear wheel fender 4 are relatively shallow, the drawing depth during press molding can be relatively shallow. The driving floor plate portion 2, the driving seat supporting plate portion 8 and the rear wheel fender 4 can be relatively easily integrally molded.

The driver's seat 3 is composed of a mounting member 21 connected to the bottom of the driver's seat 3 as shown in FIG.
The driver's seat 3 is attached to the driver's seat support plate 8 through an adjusting mechanism 20 capable of adjusting the mounting position of the driver's seat 3. The mounting member 21 is configured to support the front end side of the driver's seat 3 via a pivot shaft 24 and receive and support the rear end side of the driver's seat 3 by a pair of left and right receivers 21d. That is, at the time of work, the driver's seat 3 is placed in the use posture in which the rear end side is placed on the receiving portion 21d, and when the mounting position of the driver's seat 3 is adjusted,
Is oscillated upward around the axis of the pivot shaft 24 toward the front side of the vehicle body to open the upper side of the mounting member 21 and adjust mechanism 20.
It is designed to operate.

The adjusting mechanism 20 includes the mounting member 2
1, three mounting bolts 2 in the vertical direction of the vehicle body mounted on the driver's seat support plate portion 8 in the arrangement shown in FIGS.
2 or 23, a bolt hole 2 formed in the mounting member 21 for mounting the mounting bolts 22, 23
1a, 21b, four positioning protrusions 8b projecting on the seat mounting surface 8a that receives and supports the mounting member 21 of the driver seat support plate portion 8, and the mounting member 21 is formed so that the positioning protrusions 8b are inserted. It is composed of a plurality of positioning holes 21c described above, and in detail, it is configured as follows.

That is, the mounting bolts 22 and 23 are
Among them, the nut 25 provided on the mounting bolt 23 located on the rear side of the vehicle body is loosened by the grip type operation unit 25a provided so as to be easily rotated, and the nut 25 is attached by the mounting bolt 23 and the nut 25. Mounting member 21
Of the driver seat supporting plate 8 is released. Then, the rear end side of the mounting member 21 is lifted so that the positioning protrusion 8b can be pulled out from the positioning hole 21c, and the mounting member 21 is moved to the front side or the rear side of the vehicle body. Then, of the two mounting bolts 22 and 23, both of the two mounting bolts 22 and 22 on the front side of the vehicle body are connected to the extent that the mounting member 21 is not tightened and fixed to the driver seat support plate portion 8 but externally stopped. By allowing the mounting member 21 to slide, the mounting member 21 slides forward or backward of the vehicle body using the seat mounting surface 8a and the bolt holes 21a and 21b as sliding guides. The driver's seat 3 slides forward or backward of the vehicle body. At this time, the sliding guide formed by the seat mounting surface 8a and the bolt holes 21a and 21b is a sliding guide that follows the downward slope of the driver seat support plate 8 due to the inclination of the driver seat support plate 8. become. As a result, when the mounting member 21 slides forward, the mounting level decreases with the sliding, and when it slides rearward, the mounting level increases with the sliding, so that the driver seat 3 moves forward. When the slide adjustment is performed, the attachment level automatically becomes lower than that before the adjustment, and when the slide adjustment is performed to the rear side, the attachment level automatically becomes higher than that before the adjustment.

When the mounting member 21 reaches a predetermined sliding position, the lifting of the rear end side of the mounting member 21 is released so that the positioning projection 8b is inserted into the corresponding positioning hole 21c and the nut 25 is tightened. It is operated to tighten the attachment member 21 to the driver's seat support plate portion 8. Then, the positioning action of the positioning protrusion 8b and the positioning hole 21c, the mounting bolt 23, and the nut 25
Due to the tightening action of and, the mounting member 21 is fixed to the driver seat support plate portion 8 and the driver seat 3 is fixed to the adjusted mounting position.

[Other Embodiments] To configure an adjusting mechanism that enables adjustment of the mounting position of the driver's seat, a mounting bolt is attached to the driver's seat side, and a long hole for the bolt is formed on the driver's seat support plate side. You may carry out. As described above, when the bolt holes are formed in the vertical holes of the vehicle body, it is advantageous that the adjusting mechanism can be a compact mechanism having an extremely low vertical height.
Mounting members are provided on both the driver's seat side and the driver's seat support plate side, and one of the mounting members is a support shaft hole that is parallel to the front downward inclination of the driver's seat support plate and is long in the vehicle body front-rear direction in the lateral direction of the vehicle body. In addition, a supporting shaft slidably inserted through the supporting shaft hole is provided on the other mounting member, and the sliding of the supporting shaft in the supporting shaft hole allows the driver's seat to slide back and forth, and You may implement | achieve by adopting the adjustment mechanism comprised so that an attachment level may become low as it slides to the front side. Also in this case, compared with the case where the driver seat supporting plate is formed in a horizontal posture and the level of the supporting hole is changed by sliding the driver seat due to the inclination of the supporting shaft hole, the supporting hole is provided in the driver seat supporting plate. The vertical space of the adjustment mechanism is reduced by the amount that can be formed parallel to the front downward slope.

The driving floor plate 2, the driver seat support plate 8 and the rear wheel fender 4 are made of sheet metal, and in addition to the FRP.
The present invention can be applied to the case where it is formed by various sheet metals such as manufacturing.

The present invention can be applied not only to lawnmowers, but also to tractors and the like constituting riding type cultivators and rice transplanters.
Therefore, these are simply referred to as work vehicles.

It should be noted that reference numerals are added to the claims for convenience of comparison with the drawings, but the present invention is not limited to the configurations of the accompanying drawings by the entry.

[Brief description of drawings]

1] Side view of the entire riding lawn mower

[Fig. 2] Side view of driver's seat mounting structure

FIG. 3 is a perspective view of a mounting member for a driver's seat.

FIG. 4 is a cross-sectional view of a driver seat mounting bolt arrangement portion.

FIG. 5 is a plan view of an adjusting mechanism for a driver's seat.

FIG. 6 is a plan view of a plate body forming a driving floor plate portion, a driver seat support plate portion, and a rear wheel fender.

[Explanation of symbols]

 2 floor plate for driving 3 driver's seat 4 rear wheel fender 8 driver's seat supporting plate 8a, 21a, 21b sliding guide 20 adjusting mechanism

Claims (1)

[Claims] 1. A floor plate for driving (2), a driver seat supporting plate portion (8) located at a higher level than the driver floor plate portion (2), and left and right of the driver seat supporting plate portion (8). A rear wheel fender (4) located on the side is made by integral molding, and the driver's seat support plate portion (8) is formed in a front-lowering inclined posture that is located at a lower level toward the front side of the vehicle body. An adjusting mechanism (20) for supporting the driver's seat (3) so that the driver's seat (3) can be slid forward and backward by sliding guides (8a, 21a, 21b) along the downward slope of the driver's seat supporting plate (8).
The driver seat (3) through the driver seat support plate portion (8)
Work vehicle attached to.