JPH0118467Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a cabin device for a traveling vehicle such as an agricultural tractor, and particularly relates to an improvement of the cabin frame.

<Prior art> A tractor cabin device consists of a pair of front and rear pipe supports installed upright on the vehicle body, window-forming members such as a windshield, rear window, and door installed between each support, and each support. It is composed of a ceiling frame that is connected and fixed to the upper part, and a canopy etc. that is provided on the ceiling frame. As shown in FIG. 9, the support column 40 is formed of a square pipe, and the window forming member 15,
In order to form the mounting surface D (receiving part) of 16 and for reinforcement, a small cross-section pipe 41 or a plate material 42 or the like is welded.

<Problems to be solved by the invention> Corner portions 4 which are midway portions of the inside/outside ends B and C of the mounting surface D forming member or support 40 of the cabin
3 and 44 obstruct the operator's view inside the cabin at a large angle (β), resulting in poor visibility.

<Means for Solving the Problems> In view of these conventional problems, the present invention has been developed to improve the structure of square pipe pillars, ceiling frames, etc. It is an object of the present invention to provide a cabin device that can widen the field of view by forming a constriction in a direction orthogonal to the constriction and making it shorter than in the far and near directions.

The features of the present invention for achieving this purpose include a pair of pillars 4 and 5 at the front and rear erected on the vehicle body 2, and a ceiling frame connected to the upper ends of the four pillars 4 and 5. 7, and a rear lower member 11 connected to the lower ends of the left and right rear struts 5. These struts 4, 5, the top frame 7, and the rear lower member 11 are formed of square pipes, and window forming members 15, 16. , 17, the four pillars 4, 5, the top frame 7, and the rear lower member 1.
1 is a window forming member 1 located midway in the perspective direction when looking outside from inside the cabin device in order to narrow the width of the visibility block.
The 5th, 16th, and 17th sides are constricted inside the square pipe, and the length in the direction orthogonal to the near and far directions is shorter than the length in the near and far directions.

<Example> Hereinafter, an example of the present invention will be described based on the drawings.

1 to 6, reference numeral 1 indicates a skeleton of a cabin device 3 mounted on a tractor body 2, which includes a pair of front and rear struts 4, 5, a pair of intermediate struts 6,
A square top frame 7 connected to the upper ends of these six columns 4, 5, and 6 in total, a lower front member 8 connecting the lower ends of the left and right front columns 4, a rear column 5, and an intermediate column 6.
a fender member 9 that is connected to the fender member 9 and has a front descending portion; a lower member 10 that is connected to the front lower part of the fender member 9 and the front strut 4; and a rear lower member 11 that connects the lower ends of the left and right rear struts 5; It has a rear back strut 12 that connects this lower rear member 11 and the left and right lower members 10.

The frame 1 further includes a windshield 15 between the left and right front struts 4, and a door 16 with a glass window between the front strut 4 and the intermediate strut 6, which is pivotally connected to the intermediate strut 6.
However, between the left and right rear columns 5, a rear window 17 pivotally attached to the top frame 7 is installed, and between the rear column 5 and the intermediate column 6, a rear side glass 18 (indicated by blank areas in the drawings) is installed, respectively. Further, a canopy 19 is fitted to the top of the frame 1, a floor sheet (not shown) is attached to the bottom, and a seat 20 is attached to the bottom. Further, a partition plate 21 is fixed between the lower front member 8 and the windshield 15, and an operation panel 22 and a steering device 23 are attached to the rear side of the partition plate 21.

As is clear from this, the cabin device 3 includes almost everything around the operating section, is constructed separately from the tractor body 2, and is configured so that the assembled device can be mounted on the tractor body 2 side. .

On the side of the tractor body 2, a clutch housing and a transmission case 27 are directly connected to the rear of the engine 26, a bonnet 28 is arranged above the engine 26, and a rear axle case 29 is provided protruding from the rear side of the transmission case 27. . 30 indicates the rear wheel.

The front lower part of the cabin device 3 is the transmission case 2.
A bracket 31 protruding outward from the rear axle case 29 is removably attached to a mounting base 33 fixed to the rear axle case 29 via a bolt 32 via a cushion material.

Most of the members forming the frame 1 are made of square metal pipes, and each pair of front and rear columns 4, 5, top frame 7, and rear lower member 11 have a constriction A along the longitudinal direction. have

In the first embodiment shown in FIGS. 2 and 5,
The front and rear struts 4 and 5 have their midpoints constricted toward the inner circumferential side of the pipe so that a line l connecting the midway part of the long line L connecting the outer end B of the cabin and the inner end C of the cabin in plan view becomes a short line. These two pipe constrictions A form a mounting surface D for window forming members such as the windshield 15, door 16, rear window 17, etc.

In other words, the supports 4 and 5 are formed by recessing the diagonal part of a square pipe from the time of pipe processing, and as shown in Figs. 2 and 6, the long line L is connected to the operator E. Since it is located in a perspective direction that is approximately parallel to the line of sight of As a result, the front, rear, left and right field of view becomes wider.

As shown in FIG. 5, a mounting frame or sealing member 35 is provided around the door 16 or windshield 15.
However, due to the existence of the constricted part A, it is possible to make the constricted part a little larger and bring it closer to the outer end B of the column, so that the window area can be increased.

Since the constrictions A of the struts 4 and 5 are formed along the longitudinal direction of the pipe, the strength is improved compared to a pipe without constrictions. 2 shown in Figure 5
Although the two constrictions A ₁ and A ₂ are different in size,
They may have the same shape and size as shown in FIG. 6, or they may have a shape in which the long line L and the short line I are not perpendicular to each other as shown in FIG.

Furthermore, the cross-sectional shape of the struts 4 and 5 can be one in which the constriction part A is a right-angled recess and the inner and outer sides are circular arcs, as shown in FIG. The outer edge B, which looks like a
Various shapes can be adopted, such as one in which the inner end C and the two constrictions A are arcuate.

In addition, as shown in Figures 1 and 3, the pipe having the constricted portion A as described above can be used for the top frame 7, the rear lower member 11, etc., and is useful for widening the vertical field of view, especially for the rear lower part. When used in the member 11, it is useful for monitoring the working status of a towing work machine. However, it is sufficient that there is only one constricted portion A on the side where the window forming member is attached. That is, the top frame 7 and the lower rear member 11 are connected to the cabin device 3.
When the operator E inside the room looks at the front and rear upper, left and right upper, and rear and lower sides, there is only one constriction A constricted on the inside of the square pipe on the window forming members 15, 16, and 17 in the middle of the square pipe in the perspective direction. The length in the direction perpendicular to the distance direction is shorter than the length in the distance direction, and like the pillars 4 and 5, the view is not obstructed by the corner of the square pipe, and the field of view is widened. .

In addition, since the door 16 and the rear side glass 18 are lined up in a straight line in the front and rear of the intermediate support 6, the short line l
It is difficult to use pipes with
As shown in the figure, a T-shaped pipe with two constrictions A facing outward is used. Even in this case, there is no need for a member for forming a window forming member mounting surface on the intermediate support 6, and the mounting surface is formed by the constricted portion A.

<Effects of the invention> According to the invention detailed above, the four pillars 4,
5. Since the window forming members 15, 16, and 17 at the midpoint in the perspective direction of the ceiling frame 7 and the rear lower member 11 are constricted toward the inside of the square pipe, the length in the direction orthogonal thereto is shorter than the length in the perspective direction. Even if a square pipe is used for the frame of the cabin device, the visibility from inside the cabin device in the front, rear, left, right, and top and bottom directions is widened, and maneuverability and workability can be improved.

[Brief explanation of the drawing]

Figures 1 to 4 show the cabin device, and the first
The figure is an overall side view, the second figure is a partially cutaway plan view, and the third figure is a partially cutaway plan view.
The figure is a partially cutaway front view, FIG. 4 is a rear view, FIG. 5 is a cross-sectional plan view showing the cross-sectional shape of the right front strut, and FIGS. 6 to 8 are cross-sectional views showing second to fourth examples of the cross-sectional shape of the strut, respectively.
FIG. 9 is a sectional view showing a conventional example. 1...cabin skeleton, 3...cabin device, 4
...Front post, 5...Rear post, 7...Top frame, 15...
...Windshield, 16...Door, 17...Rear window, A...Narrow portion, B...Outer end of cabin, C...Inner end of cabin, L...Long line, l...
Short line, D...Mounting surface, E...Operator.

Claims (1)

[Scope of claim for utility model registration] A pair of pillars 4 in each of the front and rear erected on the traveling vehicle body 2,
5, a top frame 7 connected to the upper ends of the four pillars 4, 5, and a rear lower member 11 connected to the lower ends of the left and right rear pillars 5. In a cabin device in which the rear lower member 11 is formed of a square pipe and has window forming members 15, 16, and 17 attached thereto, the four pillars 4, 5, the top frame 7, and the rear lower member 1
1 is a window forming member 1 located midway in the far and near direction when looking outside from inside the cabin device in order to narrow the visibility blocking width.
A cabin device characterized in that the 5, 16, and 17 sides are constricted inside square pipes, and the length in the direction orthogonal to the near and far direction is shorter than the length in the near and far direction.