JP2004074917A - Maneuvering part structure of working vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a maneuvering part structure of a working vehicle for improving comfortability of a maneuvering part by expanding a step surface by recessing a front part of a fender facing a step toward rear wheels. <P>SOLUTION: This working vehicle 1 covers a side surface and an upper surface of the left-right rear wheels 1b arranged on both sides of a seat 6c with the circular arc-shaped fender 2, and is formed as the maneuvering part structure of the working vehicle for easily expanding the fender for expanding the step surface by turning the step surface backward by a recessed part by recessing the front part of the fender 2 facing the step 6b toward the rear wheel 1b side, improving the comfortability of the maneuvering part and enhancing rigidity of the fender with the simple constitution by recessing a machine body inside near part of the front part of the fender facing the step and leaving the outside as a circular arc as it is. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a fender structure that covers a rear wheel of a working vehicle.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, in a riding type work vehicle, left and right rear wheels arranged on both sides of a seat behind a step of a control section are covered with fenders composed of a side plate and a flat plate.
This fender structure is already known, for example, from Japanese Utility Model Publication No. 58-23744.
[0003]
[Problems to be solved by the invention]
The fender of the configuration disclosed in the above publication is to form a substantially triangular flat chamfered portion inclined toward the outer peripheral edge side on a flat plate at a portion where an elbow portion of an operator sitting on a seat is located, There is an advantage that the contact between the operator's elbow and the fender can be prevented, but since the lower front side of the fender facing the step remains a flat surface, the area of the step is not substantially expanded, and especially a small work vehicle. In such a case, there is a problem that the heel of the foot contacts the front side of the fender, and the driving operability and comfort of the clutch pedal are reduced.
[0004]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the operating portion structure of the working vehicle according to the present invention firstly includes a working vehicle 1 in which the side surfaces and the upper surface of left and right rear wheels 1b arranged on both sides of a seat 6c are covered by arc-shaped fenders 2. , The fender 2 is characterized in that the front portion facing the step 6b is depressed toward the rear wheel 1b to expand the step surface.
[0005]
Second, it is characterized in that the front side of the fender 2 facing the step 6b is depressed toward the inside of the fuselage and the outer side is left as an arc.
[0006]
Third, the fender 2 is characterized in that the outer peripheral edge of the fender 2 on the outer side of the fuselage is bent toward the rear wheel 1b.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the present invention will be described with reference to the drawings. In the drawings, reference numeral 1 denotes a tractor provided with a fender 2 according to the present invention. The tractor 1 has a front body 1 having a front wheel 1a and a rear wheel 1b, and is mounted with an engine 4 from a front side and covered with a bonnet 5, and a handle 6a And a control unit 6 including a step 6b, a seat 6c, etc., and a three-point link type lifting mechanism (not shown) is provided at a rear portion of a transmission case 3a on which the seat 6c is mounted by a constituent member of the traveling body 3, and a tilling device, etc. Work machine.
[0008]
The tractor 1 shown in FIG. 1 shows a steering section 6 covered with a cabin 7. The tractor 1 shown in FIGS. 2 to 5 has an inverted U-shaped guard on the traveling body 3 with the cabin 7 removed. The frame 8 is erected at the rear of the left and right fenders 2 to protect the operator of the control unit 6.
[0009]
On the other hand, the fender 2 is composed of an upright wall-shaped side plate 2a and an upper plate 2b extending flat from the upper edge side of the side plate 2a to the outside, and as shown in FIG. A plurality of portions of the side plate 2a are fastened and fixed to a plurality of mounting portions 9 provided on the side portion and the upper portion of the case 3a by mounting bolts 10, and in this state, a mounting portion to be described later formed on the rear side of the upper surface plate 2b. The rear column 12 of the cabin 7 or the base of the guard frame 8 is removably fastened and fixed to the surface 11 with mounting bolts.
[0010]
The structure and manufacturing means of the fender 2 will be described with reference to FIGS. First, as shown in FIG. 6, the fender 2 press-molds two plate-like members including the side plate 2a and the upper plate 2b so as to be symmetrical with respect to the front and rear center lines P of the rear wheel 1b. In a state where the upper portion of the side plate 2a and the lower portion of the upper plate 2b are overlapped with each other, the overlapped portion is spot-welded S so as to form an inverted L-shaped cross section in rear view as shown in FIG. To cover the side and upper surfaces of the rear wheel 1b with a predetermined gap.
[0011]
The upper surface plate 2b is formed by bending an upright wall-shaped side plate 14 connected to the side plate 2a integrally via a corner portion 13 formed in a large and smoothly chamfered shape on the inside. At a symmetrical position of the front and rear ends from the center line P, a predetermined length and width are depressed inward from the outer peripheral surface by a height H to form a concave portion 15 locally concave at the front and rear ends of the upper surface plate 2b.
Thereby, as shown in FIG. 4, the front recess 15 is installed so as to face inward from the side edge of the step 6 b, and expands the area of the step 6 b rearward at the front sides of the left and right fenders 2. Further, the rear concave portion 15 can be easily formed at the position of the rear concave portion 15 by additionally processing the rear support column 12 or the mounting hole 11a of the guard frame 8 in this portion. In addition, there is an advantage that a single mold for fender molding can be simplified.
[0012]
In addition, the upper plate 2b is formed with a recessed portion between the recesses 15, 15 by distributing from the center line P a storage portion 16 capable of storing a kit, a base, a switch, or various operation levers of electric components (not shown). I have.
The arc-shaped outer peripheral edge serving as a free end of the upper surface plate 2b is depressed by a height L toward the rear wheel 1b side and bent, and a peripheral wall 17 having a height L and a predetermined width are provided outside the side surface plate 2a. Is formed in an arc-shaped stepped portion. In addition, the stairs are used spaces to contact a door 70 of the cabin 7 described later.
[0013]
Therefore, when the upper surface plate 2b formed as described above forms the peripheral wall surface 17, the concave portions 15, 15 and the storage portion 16, the projecting rib portion 20 is formed on the entire outer periphery of the upper surface plate 2b. Features that the structure of the storage portion 16 and the mounting surface 11 and the like can be easily configured in various places of the fender 2 and that the stiffness of the fender 2 can be rationally increased with a simple and inexpensive structure while improving convenience. There is.
In addition, the left and right fenders 2 configured as described above can respectively mold the constituent members by a common single press molding die or a molding die (mold) such as a plastic molding die. Since the mounting holes and the like corresponding to the mounting portions 9 and the like are completed by individual additional processing, the mold cost can be reduced.
[0014]
In the fender structure according to the present invention configured as described above, when the left and right rear wheels 1b disposed on both sides of the seat 6c are covered by the side plate 2a and the top plate 2b, the fender 2 is moved to the top plate 2b facing the step 6b. The stepped surface is extended rearward by the concave portion 15 whose front portion is depressed toward the rear wheel 1b side, so that it is possible to improve the livability and to easily operate the clutch pedal and the like.
[0015]
Further, since the outer peripheral edge of the fender 2 is bent inward to form the peripheral wall surface 17 and the rib portion 20 is formed between the peripheral wall surface 17 and the recessed portion 15, the rigidity of the fender 2 is increased by a simple structure. In addition, the peripheral wall surface 17 can be used as a contact member in a state where the door 70 of the cabin 7 is closed, and the airtightness of the cabin 7 can be improved.
[0016]
That is, an example of the embodiment in this case will be described with reference to FIGS. 1 and 8. The cabin 7 in the illustrated example is a simple and lightweight type, and the left and right doors 70 are made of a transparent glass or plastic material. It is formed of a plate, and is attached to and supported by the plurality of hinge portions 71 so as to be openable and closable with respect to the rear support column 12.
The lower edge of the door 70 is formed along the arc shape of the fender 2, and this portion is closed by abutting the peripheral wall 17 as shown in FIG. And the front edge is brought into contact with the cabin frame 72 formed in a box frame shape so as to be openable and closable.
[0017]
According to the present invention, since the control structure of the working vehicle is constructed as described above, the following effects can be obtained.
In a working vehicle in which the side and upper surfaces of left and right rear wheels arranged on both sides of a seat are covered with arc-shaped fenders, the front surface of the fenders facing the steps is depressed toward the rear wheels to expand the step surfaces. Thereby, the fender can easily expand the step surface backward by the concave portion, and can improve the livability of the control unit.
[0018]
The stiffness of the fender can be increased by a simple configuration by depressing the front side of the fender facing the step toward the inside of the fuselage and leaving the outer side as an arc as it is.
[0019]
By forming the outer peripheral edge of the fender on the outer side of the fuselage toward the rear wheel side, the rigidity of the fender can be further increased. Further, the peripheral wall surface can be used as a door contact member of a cabin installed in the control section.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a configuration of a working vehicle provided with a fender structure according to the present invention and provided with a cabin.
FIG. 2 is a side view showing a configuration in which the cabin is removed and a guard frame is installed in the working vehicle of FIG.
FIG. 3 is a rear view showing a configuration of a main part of FIG. 2;
FIG. 4 is a plan view showing a configuration of a step and a fender of FIG. 2;
FIG. 5 is a perspective view showing a configuration of a main part of FIG. 2;
FIG. 6 is a side view of the fender.
FIG. 7 is a plan view of FIG. 6;
FIG. 8 is a front view of FIG. 6;
[Explanation of symbols]
REFERENCE SIGNS LIST 1 working vehicle 1b rear wheel 2 fender 2a side plate 2b top plate 3 traveling body 6 control section 6b step 6c seat 15 concave portion 17 peripheral wall surface 20 rib portion

Claims (3)

In the working vehicle 1 in which the side surfaces and the upper surface of the left and right rear wheels (1b) arranged on both sides of the seat (6c) are covered with an arc-shaped fender (2), the front part where the fender (2) faces the step (6b). The control section structure of the working vehicle, characterized in that the step surface is extended by making the step surface depressed toward the rear wheel (1b) side. 2. A control structure for a working vehicle according to claim 1, wherein the front side of the fender (2) facing the step (6b) is depressed toward the inside of the fuselage and the outer side is left as an arc. 3. The control structure of a working vehicle according to claim 1, wherein an outer peripheral edge of the fender (2) on the outer side of the fuselage is bent toward the rear wheel (1b).

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