JP2827395B2 - Wind frame for work vehicle - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a window frame for a working vehicle, and more particularly to a window frame for improving the strength of a cabin roof of a working vehicle provided with a roof window. is there.

2. Description of the Related Art Conventionally, in a work vehicle such as a power shovel, a roof window is provided above a front window in order to improve a workability by enlarging a front upper field of view.

[Problems to be Solved by the Invention] In a conventional cabin of a work vehicle provided with a roof window, a window frame that separates a front window and a roof window is fixed to the left and right cabin outer skin panels. The window frame must be formed to have a small width in order to secure a view, and the blind spot between the front window and the roof window must be as small as possible. However, the narrowly formed window frame has a low rigidity due to a small welding area between the cabin and the outer skin panel, and cracks may occur in the welded portion due to vibration of the vehicle body or the like. Therefore, in order to ensure the rigidity of welding, the width of the window frame must be increased to some extent, and contradiction arises in that increasing the rigidity increases blind spots.

In view of the above, a technical problem to be solved in order to provide a window frame of a working vehicle in which the width of the window frame is made as small as possible to improve the visibility and to secure the rigidity of the roof of the cabin and improve the durability. Problems arise, and an object of the present invention is to solve the problems.

Means for Solving the Problems The present invention has been proposed to achieve the above object, and in a working vehicle having a roof window provided above a cabin of a driver's seat, the roof window is provided with the roof window. The lower left and right ends of the wind frame that separates the front window are extended, fixed to the inner frames on both sides of the cabin, and the upper right and left sides of the wind frame are fixed to the outer skin panel of the cabin. It is an object of the present invention to provide a window frame of a working vehicle, wherein a reinforcing rib is provided over the whole.

[Operation] In the present invention, the lower portions of the left and right ends of a window frame that separates the front window and the roof window are extended and fixed to the inner frames on both sides of the cabin. Since the upper portions of both ends of the wind frame are integrally fixed to the outer skin panel of the cabin, two upper and lower portions are welded, thereby improving the rigidity of the entire cabin. Further, the reinforcing ribs provided on the wind frame improve the rigidity of the wind frame against torsion and bending, so that the wind frame can be formed as thin as possible, thereby improving the visibility and the durability.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings. For convenience of explanation, technical matters belonging to the related art will be described at the same time.

In FIG. 1, (1) is a power shovel cabin. The cabin (1) is detachably formed on the upper cover (2) of the vehicle body, and is used for lifting hooks (4) (4) (4) (4) provided on the roof (3) at the time of inspection of an engine part or the like.
(4) can be removed by a crane or the like. Reference numeral (5) denotes a door, and an underwindow (7) is provided below the door window (6) to secure a view below the side. (8) is a side window.

The front window (9) is formed so that the lower part thereof is lifted up with the upper edge as a fulcrum, and can be slid and stored on the lower surface of the roof (3). A detachable front under window (10) is provided below the front window (9), and a roof window (11) is fixed on the upper portion so as to increase the visibility in the upper and lower parts of the front as much as possible.

The front window (9) and the roof window (11)
As shown in FIGS. 1 and 2, the wind frame (12) is provided with ribs (13) protruding on both upper and lower surfaces to ensure strength against bending and twisting. The wind frame (12) is formed by fixing an upper frame (14) and a lower frame (15) shown in FIG.
5) is formed so that the front and rear widths are as narrow as possible so as not to obstruct the view. The shape of both ends (16) and (16) of the upper frame (14) is widened so that the connection portion with the outer skin panel (17) to which the upper frame (14) is fixed becomes a predetermined radius.

On the other hand, both left and right ends (18, 18) of the lower frame (15) extend from the upper frame (14) and expand in a fan shape. As shown in FIG. 4, the entire width of the lower frame (15) is substantially equal to the interval between the inner frames (19) and (19) on both sides of the cabin (1). Both ends (18)
(18) is fixed (W). As described above, since the both end portions (18) and (18) are wider than the intermediate portion of the wind frame (12), the fixing area is large. In addition, since the both end portions (18) and (18) are fixed to the strong inner frames (19) and (19), the mounting rigidity is improved. Is extremely large. Then, the upper frame (14) is firmly connected at two upper and lower positions by fixing (W) both end portions (16) and (16) of the upper frame to the outer skin panel (17). Further, since the fan-shaped ends (18) and (18) of the lower frame (15) are shielded from the outside, there is no risk of impairing the appearance.

In FIG. 4, the front window (9) is pulled up and the rails (20) (2) provided on the inner frames (19) (19) are drawn.
0) along the roof (3).

Therefore, the present invention can be variously modified without departing from the spirit of the present invention, and it is natural that the present invention extends to the modified one.

[Effects of the Invention] As described in detail in the above-described embodiment, the lower portions of both ends of the window frame are fixed to the inner frame of the cabin, so that the mounting rigidity is improved, and the window is moved by an external force such as vibration during operation. The generation of cracks at both ends of the frame is prevented. Further, since the reinforcing ribs are provided on the wind frame, the width of the wind frame in the front-rear direction can be formed as narrow as possible in conjunction with the improvement of the mounting rigidity, and the visibility of the cabin can be expanded. This invention satisfies the conflicting conditions of improving visibility and improving durability.

[Brief description of the drawings]

FIG. 1 shows an embodiment of the present invention. FIG. 1 is a perspective view of a cabin, FIG. 2 is a side longitudinal sectional end view of the cabin, FIG. 3 is a partially cutaway exploded perspective view of a wind frame, and FIG. FIG. 4 is a front longitudinal sectional end view of the cabin showing a part. (1) ... cabin (9) ... front window (11) ... roof window (12) ... window frame (13) ... rib, (14) ... upper frame (15) ... lower frame, ( 16) (18) ... end (17) ... skin panel, (19) ... internal frame

Claims (1)

(57) [Claims] In a working vehicle having a roof window provided above a cabin of a driver's seat, lower portions on both left and right sides of a window frame for partitioning the roof window and the front window are extended, and are provided on inner frames on both sides of the cabin. A window frame for a working vehicle, wherein the window frame is fixed to the upper and lower right and left sides of the window frame and fixed to outer skin panels of the cabin, and further provided with reinforcing ribs over substantially the entire length of the window frame.