JP2000296784A - Work vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce weight of a step, and to simplify a production process by constituting the step (a step and a rear structure part) of a hollow resin mold having upper layer forming parts, lower layer forming parts, a hollow part and a superposed part. SOLUTION: A traveling machine body has a step 8 for forming a footing of a boarding part and a rear wheel fender 9 for forming a rear part of the boaring part by being positioned above rear wheels. These step 8 and rear wheel fender 9 have upper layer forming parts 8a, 9a, lower layer forming parts 8b, 9b, connecting vertical wall parts 8c, 9c and a hollow part A surrounded by these, and also has a superposed part B of a resin raw material for superposing the upper layer forming parts and lower layer forming parts 8a, 9a, 8b, 9b. The step 8 and the rear wheel fender 9 are integrally constituted of a hollow resin mold by blow molding. Strength can be enhanced by forming these hollow part A and superposed part B. Thus, weight of the traveling machine body can be reduced, and a production process can be simplified.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work vehicle such as a riding lawn mower or a relatively small tractor, and more particularly, to a seat at a middle portion between upper surfaces of a rear wheel fender that covers a range above right and left rear wheels. The present invention relates to a fender structure of a working vehicle configured to attach a fender.

[0002]

2. Description of the Related Art In recent years, in order to reduce the weight of a work vehicle and simplify a manufacturing process, parts such as steps and fenders that form a traveling body of the work vehicle are formed by press forming a sheet metal material. Instead, resin moldings having relatively high strength are often used. Therefore, conventionally, by forming a reinforcing rib integrally with the base material of the resin molded product by injection molding, a resin molded product having relatively high strength has been obtained.

[0003]

However, in order to form a large reinforcing rib integrally with the base material of the resin molded product in order to obtain a resin molded product having higher strength by injection molding, the reinforcing rib is formed. The surface of the base material shrinks,
Since the thickness of the base material portion is smaller than the thickness of the other base material portions and the strength is generally low, the reinforcing ribs cannot be made too large, and a higher strength cannot be obtained. In addition, since the surface is shrunk, the appearance quality must be reduced.

An object of the present invention is to obtain a fender structure of a work vehicle that is lighter and has higher strength without deteriorating the appearance quality.

[0005]

In order to achieve the above object, according to the present invention, there is provided a fender structure for a working vehicle in which a seat is attached to a middle portion between upper left and right upper surfaces of a rear wheel fender which covers a portion above right and left rear wheels. In the above, the rear wheel fender is formed of a hollow resin molded product by blow molding, and a resin material overlapping portion is provided corresponding to a seat mounting portion thereof, and a lower surface of the resin material overlapping portion is supported on the body frame side. It was configured to be supported by a member.

[0006]

According to the present invention, no shrinkage occurs on the surface of the resin molded product by increasing the strength of the resin molded product unlike the injection molding. In addition, since the direct load caused by the driver's boarding is directly applied to the support member, it is not necessary to unnecessarily increase the thickness of the resin molded product.

[0007]

As described above, according to the present invention, the strength can be increased without deteriorating the appearance quality. In addition, the weight can be reduced as compared with the case where the strength to endure a direct load caused by the ride of the driver is provided. In other words, it is possible to obtain a fender structure of a work vehicle that is lighter and has higher strength without deteriorating the appearance quality. Moreover,
By arranging the resin material polymerization part corresponding to the seat mounting part, the seat can be easily attached,
The ability to be lighter in weight has made it possible to improve steering performance.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a mid-mounted riding lawn mower will be described below with reference to the drawings. [First Embodiment] As shown in FIG. 1, a riding lawn mower includes a bonnet 2 forming an engine room at the front of a traveling machine body 1, a longitudinal axis type engine 3 mounted in the engine room, and a traveling machine. A front wheel 4 provided at a front part of the vehicle body 1, a rear wheel 5 provided at a rear part of the traveling body 1, a control panel 7 forming a front part of a riding part 6 located between the front wheel 4 and the rear wheel 5, Step 8, forming a scaffold of the riding section 6, a rear wheel fender 9 that covers the upper part of the left and right rear wheels 5 and forms a rear part of the riding section 6, and is attached to a middle part of the upper surface of the rear wheel fender 9 in the left and right. Seat 10, front wheel 4 and rear wheel 5
And a mower 12 connected to the lower abdomen of the traveling body 1 via a link mechanism 11 so as to be able to move up and down.

Power from the engine 3 is transmitted to a mower 12 and a transmission case 14 for driving the rear wheels 5 through a belt transmission mechanism 13 configured in two systems.

Each of the hood 2, the control panel 7, the step 8, and the rear wheel fender 9 is made of a resin material so as to reduce the weight of the traveling body 1 and simplify the manufacturing process. As shown in FIG. 1, a bonnet 2 includes a lower bonnet 2A fixedly attached to the traveling body 1 and an upper bonnet 2 attached to the lower bonnet 2A so as to swing freely around a front horizontal axis.
B.

As shown in FIGS. 2 to 7, the step 8 and the rear wheel fender 9 are integrally formed by a blow molded hollow resin molded product. And the strength of the rear wheel fender 9 is increased. In addition, a resin material overlapping portion B in which resin materials overlap each other is provided corresponding to a seat mounting portion 9A which is a left and right middle portion of the upper surface of the rear wheel fender 9, and a lower surface of the resin material overlapping portion B is attached to the body frame. By supporting the support member 16A on the 16 side, a direct load when a driver sits on the seat 10 is applied to the support member 16A without being applied to the rear wheel fender 9. A water inlet A1 for injecting water into the hollow portion A is formed in an upper portion of the hollow portion A, and a drainage port A2 for discharging water from the hollow portion A is formed in a lower portion of the hollow portion A. I have. Then, by pouring water from the water inlet A1 into the hollow portion A to increase the weight of the rear side of the traveling body 1 and increase the ground load of the rear wheel 5, the improvement of the climbing performance when working on a slope is improved. By reducing the weight of the traveling body 1 by draining the water from the drain port A2, it is possible to improve the steering performance when working on level ground.

As shown in FIG. 8 to FIG.
Is composed of a resin molded product by injection molding. When the control panel 7 is injection-molded, the high-pressure gas is fed from an injection gate 7A for injecting a resin material to a portion forming the basic skeleton of the control panel 7, thereby suppressing a reduction in appearance quality due to shrinkage and a hollow rib 7B. Is formed to increase the strength of the control panel 7. Further, it is intended to compensate for a decrease in flow characteristics when glass fibers such as fillers are contained in a resin material in order to increase the strength of the material.
Incidentally, reference numeral 17 in the drawing denotes a plug for closing the injection gate 7A formed for feeding high-pressure gas.

[Second Embodiment] As shown in FIGS. 11 to 13, in this embodiment, each of the step 8 and the rear wheel fender 9 is formed of a separate hollow resin molded product by blow molding. By forming a hollow portion A in each of the step 8 and the rear wheel fender 9, the strength of the step 8 and the rear wheel fender 9 is increased. As in the case of the first embodiment, a resin material overlapping portion B in which resin materials overlap with each other is provided corresponding to a seat mounting portion 9A which is a left and right middle portion of the upper surface of the rear wheel fender 9. or,
A hollow portion A is provided above the hollow portion A of the rear wheel fender 9.
A water inlet A1 is formed below the hollow portion A of the rear wheel fender 9, and a drain port A2 for draining water from the hollow portion A is formed.

[Embodiment 3] As shown in FIGS. 14 to 16, in this embodiment, as in the second embodiment, each of the step 8 and the rear wheel fender 9 is formed of a separate resin molded product. However, step 8 is made of a resin molded product by injection molding similar to the control panel 7 of the first embodiment,
The rear wheel fender 9 is formed of a hollow resin molded product as in the second embodiment. That is, in step 8, the hollow ribs 8B are formed while suppressing the deterioration of the appearance quality due to the shrinkage by sending the high pressure gas from the injection gate 8A for injecting the resin material during the injection molding to the portion requiring reinforcement in step 8. Thus, the strength of step 8 is increased. Further, it is possible to compensate for a decrease in flow characteristics when glass fibers such as fillers are contained in the resin material in order to increase the strength of the material. Incidentally, reference numeral 17 in the drawing denotes a plug for closing the injection gate 8A formed to feed the high-pressure gas. On the other hand, as in the case of the second embodiment, the rear wheel fender 9 is provided with a water inlet A1 for injecting water into the hollow part A above the hollow part A, and a hollow part below the hollow part A. A drain port A2 for draining from A is formed.

[Modifications] The present invention is not limited to the above embodiment. For example, the working vehicle in the present invention may be a riding rice transplanter or a relatively small tractor. Further, as a hollow resin molded product by blow molding, a water injection port A1 for injecting water into the hollow portion A, and
The drainage port A2 for draining from the hollow portion A may not be formed.

In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the attached drawings.

[Brief description of the drawings]

FIG. 1 is an overall side view of a riding lawn mower.

FIG. 2 is a plan view of a step and a rear fender.

FIG. 3 is a sectional view taken along line aa in FIG. 2;

FIG. 4 is a sectional view taken along line bb in FIG. 2;

FIG. 5 is a sectional view taken along the line c-c in FIG. 2;

FIG. 6 is a sectional view taken along line dd in FIG. 2;

FIG. 7 is a sectional view taken along the line ee in FIG. 2;

FIG. 8 is a partially cutaway side view of the control panel.

FIG. 9 is a partially cutaway rear view of the control panel.

FIG. 10 is a cross-sectional plan view of the control panel.

FIG. 11 is a plan view of steps in the second embodiment.

FIG. 12 is a plan view of a rear fender in the second embodiment.

FIG. 13 is a longitudinal sectional side view of a step and a rear fender in the second embodiment.

FIG. 14 is a plan view of the steps in the third embodiment.

15 is a sectional view taken along line ff in FIG. 14;

FIG. 16 is a sectional view taken along line g-g in FIG.

[Explanation of symbols]

 Reference Signs List 5 left and right rear wheels 9 rear wheel fender 9A seat mounting part 10 seat 16 fuselage frame 16A support member B resin material overlapping section

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[Procedure amendment]

[Submission date] March 30, 2000 (2003.3.3)
0)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Full text

[Correction method] Change

[Correction contents]

[Document Name] Statement

[Title of the Invention] Work vehicle

[Claims]

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a step arranged in a riding section and a structure of a rear structure provided with a seat at a high position behind the step in a work vehicle.

[0002]

2. Description of the Related Art Generally, in a work vehicle, when a rider is provided with a rear structure section having a step for placing a foot on a driver's foot and a seat in a riding section, a plurality of sheet metal members are pressed, and the plurality of pressed sheet metal members are welded. And bolts and nuts,
There are many steps and rear structures.

[0003]

Since the steps (step and rear structure) provided in the riding section of the work vehicle have a relatively large area, the steps (step and rear structure) are described in the prior art. When the part) is made of sheet metal, the weight of the step (the step and the rear structural part) becomes heavy. As a result, there is room for improvement in terms of weight reduction of steps (steps and rear structural parts) for a work vehicle that often enters a soft field.

When the steps (steps and rear structural parts) are made of sheet metal as described in the prior art, step (pressing of sheet metal) or connection of a plurality of pressed sheet metal is performed. Since a large number of production steps are required for the production of the step and the rear structure, there is room for improvement in simplifying the production process of the step (the step and the rear structure). According to the present invention, in the case where a work vehicle is provided with a step (step and rear structure section) in a riding section, the step (step and rear structure section) is secured while securing sufficient rigidity as a whole of the step (step and rear structure section).
It is intended to reduce the weight of the device and to simplify the production process.

[0005]

The feature of the present invention resides in the construction of a working vehicle as follows. [1] An upper layer forming section, a lower layer forming section, a vertical wall section connecting the upper layer and the lower layer forming section, a hollow section surrounded by the upper layer forming section, the lower layer forming section and the vertical wall section, and an upper layer and a lower layer forming section. Comprising a superimposed part to be superimposed, constituting a step,
The step is formed of a hollow resin molded product, and the step is arranged in the riding section.

[2] A step arranged in the riding section, and a rear structure connected to the rear of the step and located at a position higher than the step, a seat is provided in the rear structure, and an upper layer forming section is provided. A lower layer forming portion, a vertical wall portion connecting the upper layer and the lower layer forming portion, a hollow portion surrounded by the upper layer forming portion, the lower layer forming portion and the vertical wall portion, and a polymerization portion where the upper layer and the lower layer forming portion are overlapped. In addition, the step and the rear structure are formed, and the step and the rear structure are integrally formed of a hollow resin molded product.

[3] In the configuration of the above item [2], the overlapping portion is supported by the support member of the traveling body.

[4] In the configuration of the above item [1], the steps are formed of a hollow resin molded product by blow molding.

[5] In the structure of the above item [2] or [3], the step and the rear structural portion are formed of a hollow resin molded product by blow molding.

[0010]

[I] According to the features of claims 1 and 2, steps (steps and rear structural parts) are provided in the riding section of the working vehicle.
In the case of comprising, an upper layer forming section, a lower layer forming section, a vertical wall section, a hollow section and an overlapping section are provided to form a step (step and rear structural section), and a step (step and rear structural section)
Is formed of a hollow resin molded product. By forming the steps (step and rear structure part) with a hollow resin molded product in this way, compared with the case where the steps (step and rear structure part) are formed by sheet metal as described in the related art, The weight of the steps (step and rear structure) can be reduced.

According to the features of the first and second aspects, the step (step and rear structure) is formed of a hollow resin molded product, and the step (step and rear structure) can be integrally formed. Therefore, there is relatively little processing to be performed on the steps (the step and the rear structural part) after the molding. As a result, a relatively small number of production steps can be performed without setting up a large number of production steps such as pressing a sheet metal material or connecting a plurality of pressed sheet metal materials as described in the related art. (Step and rear structure) can be produced.

[II] According to the features of claims 1 and 2,
The step (step and rear structure part) is provided with a hollow part by the upper layer forming part, the lower layer forming part, and the vertical wall part, and also includes a superposed part in which the upper layer and the lower layer forming part are overlapped. The vertical wall portion between the and the overlapping portion is in a state where a relatively large number of vertical wall portions are arranged in the steps (the step and the rear structure portion). As a result, a relatively large number of vertical wall portions function as reinforcing ribs, and sufficient rigidity is secured as a whole of the steps (step and rear structural portions).

[III] According to the feature of the second aspect, since the step and the rear structure are integrally formed by a hollow resin molded product, compared with a structure in which the step and the rear structure are separately mounted on the traveling body. Therefore, the steps and the rear structure can be easily attached to the traveling body, and the steps and the rear structures can be easily attached to the traveling body even if the weight of the steps and the rear structure is light as described above. Can be done.

[IV] According to the feature of claim 3, similar to the case of claim 2, the "action" described in the above items [I], [II], and [III] is provided. It has various “actions”. In the case where the support member of the traveling body is configured to support the hollow portion when the step and the rear structure portion are arranged on the step and the rear structure portion of the traveling body, the load becomes hollow when the load is applied to the step and the rear structure portion from above. Since it is hung on the support member of the traveling body via the portion, there is a possibility that the hollow portion may be deformed in the vertical direction.

According to the third aspect of the present invention, the overlapping portion is supported by the support member of the traveling body. As a result, as described above, when a load is applied to the step and the rear structural portion from above, the load is applied to the support member of the traveling body via the overlapping portion, and the overlapping portion is not deformed in the vertical direction. There is no danger.

[V] According to the features of claim 4, claim 1
In the same way as in the case of (1), the “action” described in the preceding section [I] and [II] is provided, and in addition, the following “action” is provided. According to the feature of the fourth aspect, since the step including the upper layer forming section, the lower layer forming section, the vertical wall section, the hollow section, and the overlapping section is formed by blow molding, the shape of the entire step is set relatively freely. The steps can be provided with a convex or concave shape relatively freely. In addition, since the upper layer forming section and the vertical wall section and the lower layer forming section and the vertical wall section can be integrally formed at the time of blow molding, a bonding step between the upper layer forming section and the vertical wall section after molding, a lower layer forming section, and the like. There is no need to perform a bonding step between the first and second walls.

[VI] According to the feature of claim 5, similar to the case of claim 2 or 3, the "action" described in the above-mentioned [I] to [IV] is provided. It has various “actions”. According to the feature of claim 5, since the step and the rear structural portion including the upper layer forming portion, the lower layer forming portion, the vertical wall portion, the hollow portion, and the overlapping portion are formed by blow molding, the entire step and the rear structural portion are formed. The shape can be set relatively freely, and the steps and the rear structure can be provided with a convex or concave shape relatively freely. In addition, since the upper layer forming section and the vertical wall section and the lower layer forming section and the vertical wall section can be integrally formed at the time of blow molding, a bonding step between the upper layer forming section and the vertical wall section after molding, a lower layer forming section, and the like. There is no need to perform a bonding step between the first and second walls.

[0018]

According to the first and second aspects of the present invention, steps (steps and rear structural parts) are provided in the riding section of the working vehicle.
When the step (step and rear structure part) is constituted by a hollow resin molded article having an upper layer forming part, a lower layer forming part, a vertical wall part, a hollow part and a polymerization part, the step (step and rear structure part) is formed. Part), the steps (step and rear structural parts) can be reduced in weight and the production process can be simplified while ensuring the overall rigidity of the part, and the work vehicle can be reduced in weight and production cost can be reduced. I was able to.

According to the second aspect of the present invention, since the step and the rear structure are integrally formed of a hollow resin molded product, the step and the rear structure can be easily attached to the traveling body. As a result, the workability of the work vehicle could be improved.

According to the feature of the third aspect, similar to the case of the second aspect, the above-mentioned "effect of the invention" of the second aspect is provided, and in addition to the "effect of the invention", the following "invention" is provided. Of the effect. According to the feature of claim 3, by supporting the overlapping portion on the support member of the traveling body, it is possible to support the step and the rear structural portion without accompanying deformation of the overlapping portion in the vertical direction against a load from above. It was possible to improve the support strength of the steps and the rear structure.

According to the feature of claim 4, the "effect of the invention" of the above-mentioned claim 1 is provided similarly to the case of the claim 1, and in addition to the "effect of the invention", the following "invention" is provided. Of the effect. According to the feature of the fourth aspect, since the step including the upper layer forming section, the lower layer forming section, the vertical wall section, the hollow section, and the overlapping section is formed by blow molding, the shape of the entire step is set relatively freely. It is possible,
The step can be provided with a convex or concave shape relatively freely, and it is necessary to perform a bonding process between the upper layer forming portion and the vertical wall portion and a bonding process between the lower layer forming portion and the vertical wall portion after molding. Due to the absence of this, productivity could be improved.

According to the feature of claim 5, claim 2 or 3
The effect of the invention according to claim 2 or 3 as in the case of
In addition to this “effect of the invention”, the following “effect of the invention” is provided. According to the feature of claim 5, since the step and the rear structural portion including the upper layer forming portion, the lower layer forming portion, the vertical wall portion, the hollow portion, and the overlapping portion are formed by blow molding, the entire step and the rear structural portion are formed. The shape can be set relatively freely, and the step and the rear structure can be provided with a convex or concave shape relatively freely, and the bonding process between the upper layer forming portion and the vertical wall portion after molding, In addition, productivity can be improved because there is no need to perform a bonding step between the lower layer forming portion and the vertical wall portion.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a mid-mounted riding lawn mower will be described below with reference to the drawings. [First Embodiment] As shown in FIG. 1, a riding lawn mower includes a bonnet 2 forming an engine room at a front portion of a traveling body 1, an engine 3 of a vertical axis type mounted on the engine room,
A front wheel 4 provided at a front portion of the traveling body 1, a rear wheel 5 provided at a rear portion of the traveling body 1, a riding portion 6 located between the front wheel 4 and the rear wheel 5, and a front portion of the riding portion 6 are formed. Control panel 7,
Step 8 forming a scaffold of the riding section 6, a rear wheel fender 9 located above the right and left rear wheels 5 and forming a rear portion of the riding section 6, attached to a left and right intermediate portion of the upper surface of the rear wheel fender 9. And a mower 12 and the like connected to the lower part of the traveling machine body 1 via a link mechanism 11 between the front wheel 4 and the rear wheel 5 so as to be able to move up and down.

As shown in FIG. 1, the power of the engine 3 is 2
The transmission is transmitted to a mower 12 and a transmission case 14 that drives the right and left rear wheels 5 via a belt transmission mechanism 13 configured in a system.

Bonnet 2, control panel 7, step 8
And the rear wheel fender 9 is made of a resin material,
The weight of the traveling body 1 is simplified, the production process is simplified, and the like. As shown in FIG. 1, the bonnet 2 is constituted by a lower bonnet 2A fixedly attached to the traveling body 1 and an upper bonnet 2B attached to the lower bonnet 2A so as to swing freely around a front horizontal axis. I have.

As shown in FIGS. 2, 3, 4, 5, 6, and 7,
The rear wheel fender 9 is configured so as to be connected to the rear portion of the step 8 and located at a position higher than the step 8. Step 8 and rear wheel fender 9 are upper layer forming section 8
a, 9a, lower layer forming portions 8b, 9b, and vertical wall portions 8c, 9 connecting the upper and lower layer forming portions 8a, 9a, 8b, 9b.
c, a hollow portion A surrounded by upper layer forming portions 8a, 9a, lower layer forming portions 8b, 9b and vertical wall portions 8c, 9c, and a resin material in which the upper layer and lower layer forming portions 8a, 9a, 8b, 9b are overlapped. The step 8 and the rear wheel fender 9 are integrally formed by a hollow resin molded product formed by blow molding. By forming the hollow portion A and the overlapping portion B in the step 8 and the rear wheel fender 9, the strength of the step 8 and the rear wheel fender 9 is increased.

As shown in FIGS. 2 and 3, at the seat mounting portion 9A at the left and right intermediate portion of the upper surface of the rear wheel fender 9, an overlapping portion B of a resin material on which the upper and lower layer forming portions 9a and 9b are overlapped is formed. The lower surface of the overlapping portion B of the rear wheel fender 9 is supported by the support member 16 of the body frame 16.
A is supported. Thus, a direct load when the driver sits on the seat 10 is applied to the support member 16A without being applied to the rear wheel fender 9.

As shown in FIG. 2 and FIG. 3, a water inlet A for injecting water into the hollow portion A of the step 8 and the rear wheel fender 9.
1, a drain port A2 for draining water from the hollow portion A of the step 8 and the rear wheel fender 9 is provided in the hollow portion A of the step 8. Thereby, by injecting water from the water inlet A1 into the hollow portion A of the step 8 and the rear wheel fender 9, the weight of the rear side of the traveling body 1 is increased, and the grounding load of the right and left rear wheels 5 is increased. It is possible to improve the hill climbing performance when working on a slope. Drain A
By reducing the weight of the traveling machine body 1 by draining the water from the vehicle 2, it is possible to improve the steering performance when working on level ground.

As shown in FIGS. 8, 9, and 10, the control panel 7 is formed of a resin molded product by injection molding. When the control panel 7 is injection-molded, a high-pressure gas is fed from an injection gate 7A for injecting a resin material to a portion forming a basic skeleton of the control panel 7, thereby forming a hollow rib 7B while suppressing a decrease in appearance quality due to shrinkage. Thus, the strength of the control panel 7 is increased. In order to enhance the strength of the resin material, it is possible to compensate for a decrease in flow characteristics when glass fibers such as fillers are contained in the resin material. A plug 17 is provided for closing the injection gate 7A formed to feed high-pressure gas.

[Second Embodiment] As shown in FIGS. 11, 12, and 13, the step 8 includes an upper layer forming section 8a and a lower layer forming section 8a.
b, a vertical wall portion 8c connecting the upper layer and lower layer forming portions 8a and 8b, an upper layer forming portion 8a, a lower layer forming portion 8b, and a vertical wall portion 8
c and the upper and lower layer forming portions 8
Steps 8 are integrally formed by blow molding a hollow resin molded product.

Similarly, the rear wheel fender 9 has an upper layer forming portion 9a.
And a lower layer forming portion 9b, and upper and lower layer forming portions 9a and 9b.
And a hollow portion A surrounded by the upper layer forming portion 9a, the lower layer forming portion 9b, and the vertical wall portion 9c. A rear wheel fender 9 is configured separately from the rear wheel fender 9. By forming the hollow portion A and the overlapping portion B in the step 8 and the rear wheel fender 9 in this way, the step 8
And the strength of the rear wheel fender 9 is increased.

In the same manner as in the first embodiment described above, the seat mounting portion 9A at the left and right intermediate portion of the upper surface of the rear wheel fender 9
, A resin material overlapping portion B is formed in which the upper layer and lower layer forming portions 9a and 9b are overlapped. A water inlet A1 for injecting water into the hollow portion A of the rear wheel fender 9 is provided above the hollow portion A of the rear wheel fender 9, and a water inlet A1 is provided below the hollow portion A of the rear wheel fender 9. Is provided with a drain port A2 for draining water from the hollow portion A.

[Modification] The present invention is based on the aforementioned [First Embodiment].
The working vehicle according to the present invention is not limited to the second embodiment, and may be, for example, a riding rice transplanter or a relatively small tractor. As a blow-molded hollow resin molded product, a water inlet A1 for injecting water into the hollow portion A of the step 8 and the rear wheel fender 9 and a drainage for draining from the hollow portion A of the step 8 and the rear wheel fender 9 It may not have the mouth A2.

In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration of the attached drawings.

[Brief description of the drawings]

FIG. 1 is an overall side view of a riding lawn mower according to a first embodiment.

FIG. 2 is a plan view of steps and a rear wheel fender in the first embodiment.

FIG. 3 is a cross-sectional view of FIG. 2 in the first embodiment, viewed from aa direction.

FIG. 4 is a cross-sectional view of FIG. 2 in the first embodiment viewed from the bb direction;

FIG. 5 is a cross-sectional view of FIG. 2 in the first embodiment, viewed from the cc direction;

FIG. 6 is a cross-sectional view of FIG. 2 in the first embodiment viewed from a dd direction.

FIG. 7 is a cross-sectional view of FIG. 2 in the first embodiment viewed from the ee direction.

FIG. 8 is a side view of the control panel according to the first embodiment with a portion cut away.

FIG. 9 is a rear view of the control panel according to the first embodiment with a part of the control panel cut away.

FIG. 10 is a cross-sectional plan view of the control panel in the first embodiment.

FIG. 11 is a plan view of steps in the second embodiment.

FIG. 12 is a plan view of a rear wheel fender in the second embodiment.

FIG. 13 is a vertical side view of a step and a rear wheel fender in a second embodiment.

[Description of Signs] 1 Traveling body 6 Riding section 8 Step 8a, 9a Upper layer forming section 8b, 9b Lower layer forming section 8c, 9c Vertical wall section 9 Rear structure section 10 Seat 16A Support member A Hollow section B Overlap section

[Procedure amendment 2]

[Document name to be amended] Drawing

[Correction target item name] All figures

[Correction method] Change

[Correction contents]

FIG.

FIG. 2

FIG. 3

FIG. 4

FIG. 5

FIG. 6

FIG. 7

FIG. 8

FIG. 9

FIG. 10

FIG. 11

FIG.

FIG. 13

Claims (5)

[Claims] An upper layer forming section (8a) and a lower layer forming section (8).
b), a vertical wall portion (8c) connecting the upper and lower layer forming portions (8a) and (8b), and the upper layer forming portion (8a);
A hollow portion (A) surrounded by a lower layer forming portion (8b) and a vertical wall portion (8c), and the upper and lower layer forming portions (8a),
(8b) is provided with a superposed portion (B) on which the superposed portion (B) is superimposed to constitute a step (8), wherein the step (8) is constituted by a hollow resin molded article, and The work vehicle arranged in 6). 2. A step (8) arranged in the riding section (6), and a rear structural section (9) connected to the rear of the step (8) and located at a higher position than the step (8). The rear structure (9) is provided with a seat (1
0), the upper layer forming portions (8a) and (9a) and the lower layer forming portion (8
b), (9b), and the upper and lower layer forming portions (8a),
A vertical wall (8) connecting (9a), (8b) and (9b)
c) and (9c), and the upper layer forming portions (8a) and (9c).
a), lower layer forming portions (8b) and (9b) and vertical wall portions (8
c), a hollow portion (A) surrounded by (9c), and the upper and lower layer forming portions (8a), (9a), (8b),
(9b) and a superposed portion (B) on which the step (8) and the rear structural portion (9) are formed, and the step (8) and the rear structural portion (9) are formed by hollow resin molding. A work vehicle that is integrated with the product. 3. The work vehicle according to claim 2, wherein the overlapping portion (B) is supported by a support member (16A) of the traveling body (1). 4. The work vehicle according to claim 1, wherein the step (8) is formed of a hollow resin molded product by blow molding. 5. The work vehicle according to claim 2, wherein the step (8) and the rear structural portion (9) are made of a hollow resin molded product formed by blow molding.