JP2591077Y2 - Cab of construction machinery - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cab for an operator's cab, which is mainly equipped on construction machines such as hydraulic excavators and working vehicles.

[0002]

2. Description of the Related Art FIG. 4 is a side view showing an operator cab body 1 described in Japanese Utility Model Laid-Open Publication No. 4-83915. In the figure, 2 is a skylight and 3 is a gutter. FIG.
FIG. 5 is a vertical sectional view of a portion A in FIG. 4. In the figure, 4
Is a front window. In the cab of the prior art shown in FIGS. 4 and 5, a skylight 2 is provided on a ceiling of an operator cab body 1,
In addition, a gutter 3 is welded in the left and right direction of the upper front part so as to flow from the upper surface of the ceiling and flow to guide rainwater. Thereby,
Since the rainwater is guided to the left and right ends by the gutter 3, it is possible to prevent the rainwater from flowing down to the front of the front window 4.

[0003]

In recent cabs of a hydraulic shovel, a skylight is provided so that the cab can be opened to the upper front part of the cab in order to secure a driver's obliquely upward view. In addition, it is considered that a sunshade for shielding light is attached to the upper front part of the cab. for that reason,
It is difficult to fix and install gutters as in the prior art. Further, when the sunshade is mounted, there is a problem that obliquely upward visibility is obstructed. An object of the present invention is to provide a cab that can solve the above problems.

[0004]

In the cab of the present invention, a gutter member having elasticity in the vertical direction is attached to the front edge of the skylight over substantially the entire width of the skylight, and the front edge of the gutter member is closed with the skylight. In the state, it was configured to be below the sunshade. Brackets are provided at the left and right ends of the upper front part of the cab, and the sunshade is pivotally supported between the brackets so as to be freely adjustable.

[0005]

In the cab of the present invention, a gutter member is attached to the front edge of the skylight over substantially the entire width of the skylight, and the front edge of the gutter member is set to be located below the sunshade when the skylight is closed. Therefore, rainwater during rainfall and rainwater transmitted from the upper surface of the ceiling do not flow down from the space between the front edge of the skylight and the rear edge of the sunshade. In the case of light rainfall during the operation of the construction machine, the driver sometimes operates with the front window opened. In this case, light rain falling on the upper surface of the sunshade drops from the front edge of the sunshade to the front end of the cab. Therefore, even when the front window is opened and the driving operation is performed, rainwater does not fall on the knees of the driver sitting. Also, since a rubber material or the like having elasticity is used as a material of the gutter member attached to the front edge portion of the skylight, the gutter member positioned below the sunshade when the skylight is pivoted upward and forward and backward. Can easily bend the front edge portion of the roof to avoid the sunshade and open the skylight without hindrance.

In the present invention, the sunshade is pivotally supported on the upper front portion of the cab so that the sunshade can be rotated. Therefore, when the sunshade having cloudy see-through obstructs the view obliquely upward, the direction of the upper surface of the sunshade is adjusted obliquely upward. Since the upper surface of the sunshade substantially coincides with the viewing direction of the driver, the sunshade looks thin and does not obstruct the view. When performing the above rotation adjustment, the front edge of the gutter member located below the sunshade can be avoided, and the rotation adjustment can be performed without any trouble.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a perspective view showing the cab 5 of the present invention. In the figure, 6 is the ceiling of the cab 5, 7 is the skylight,
8 is a front surface of the cab 5, 9 is a front window, 10 is a gutter member, 11
Are brackets erected at the right and left ends of the upper part of the front surface 8;
2 is a sunshade, 13 is a drive motor for opening and closing the front window, 1
4 is a cable. FIG. 2 is a vertical sectional view of a main part of the cab 5 in a state where the front window 9 in FIG. 1 is fully opened. In the figure, 15 is a gas cylinder for opening and closing the skylight, and 1
Reference numeral 6 denotes a lock motor for locking the front window. FIG. 3 shows FIG.
It is an enlarged view near the skylight 7 and the sunshade 12 in FIG. In the figure, 17 is a hinge for hinged the skylight 7 to the ceiling 6, and 18 is a pin for pivotally supporting the sunshade 12 to the bracket 11.

Next, the structure of the cab 5 of the present invention will be described with reference to FIGS. In the cab 5 of the present invention, a rubber material or the like having elasticity in the vertical direction is provided on the front edge of the skylight 7 over substantially the entire width of the skylight 7 (the width dimension of the skylight 7 is a dimension w as shown in FIG. 1). The gutter member 10 is attached so as to guide rainwater in the left-right direction, and the front edge of the gutter member 10 is
Is configured to be located below the sunshade 12 in the closed state. Brackets 11 are provided upright on both right and left ends of the upper surface 8 of the cab 5, and a sunshade 12 is rotatably supported between the brackets 11 and 11.

Next, the operation of the cab 5 according to the present invention will be described. In the cab 5 of the present invention, the gutter member 10 is attached to the front edge of the skylight 7, and the front edge of the gutter member 10 is set to be located on the lower surface side of the sunshade 12 when the skylight 7 is closed. Rainwater during rainfall and rainwater transmitted from the upper surface of the ceiling 6 do not flow down from the space between the front edge of the skylight 7 and the rear edge of the sunshade 12. In addition, in the case of light rainfall during the operation of the construction machine, the driving may be performed with the front window 9 opened. In this case, the light rain falling on the upper surface of the sunshade 12 drips from the front end edge of the sunshade 12 to the front end side of the cab 5 (the state of the dripping is indicated by reference numeral a in FIG. 2).
Therefore, even if the front window 9 is opened and the driving operation is performed,
Rainwater does not fall on the seated driver's knees.
Further, since the gutter member 10 attached to the front edge of the skylight 7 is made of an elastic rubber material or the like, the sunshade 12 is rotated when the skylight 7 is opened upward and backward.
The front edge of the gutter member 10 located on the lower surface side of the gutter 10 can be easily bent to escape the sunshade 12, and the skylight 7 can be opened without any trouble.

In the present invention, the sunshade 12 is pivotally supported on the upper portion of the front surface of the cab 5 so that the sunshade 12 can be rotated. Therefore, when the sunshade 12 having cloudy perspective obstructs the obliquely upward view, the direction of the upper surface of the sunshade 12 is adjusted obliquely upward (the direction of the imaginary line B in FIG. 3). Since the upper surface of the sunshade 12 substantially coincides with the viewing direction of the driver, the sunshade 12 looks thin and does not obstruct the field of view. When performing the rotation adjustment, the front edge of the gutter member 10 located on the lower surface side of the sunshade 12 can be avoided, and the rotation adjustment can be performed without any trouble.

[0011]

[Effects of the Invention] In recent cabs, a skylight is provided so as to be able to be opened up to the upper part of the front of the cab in order to secure a driver's obliquely upward view, and it is considered that a sunshade for shielding light is installed. ing. Therefore, it is difficult to fix and install the gutter as in the prior art. Further, when the sunshade is mounted, there is a problem that obliquely upward visibility is obstructed. However, in the cab of the present invention, a gutter member is attached to the front edge of the skylight over substantially the entire width of the skylight, and the front edge of the gutter member is set to be located below the sunshade when the skylight is closed. However, rainwater during rainfall and rainwater transmitted from the upper surface of the ceiling do not flow down from the space between the front edge of the skylight and the rear edge of the sunshade. In the case of light rainfall during the operation of the construction machine, the driver sometimes operates with the front window opened. In this case, light rain falling on the upper surface of the sunshade drops from the front edge of the sunshade to the front end of the cab. Therefore, even when the front window is opened and the driving operation is performed, rainwater does not fall on the knees of the driver sitting. In addition, since a rubber material having elasticity is used as a material of the gutter member attached to the front edge portion of the skylight, when the skylight is rotated upward and forward and backward,
The front end edge of the gutter member located on the lower surface side of the sunshade can be easily bent to dodge the sunshade and open the skylight without any trouble. In the present invention, the sunshade is pivotally supported on the upper front of the cab so that the sunshade can be rotated. Therefore, when the sunshade having cloudy see-through obstructs the view obliquely upward, the direction of the upper surface of the sunshade is adjusted obliquely upward. Since the upper surface of the sunshade substantially coincides with the viewing direction of the driver, the sunshade looks thin and does not obstruct the view.

[Brief description of the drawings]

FIG. 1 is a perspective view of a main part showing a cab of the present invention.

FIG. 2 is a vertical sectional view of a main part of the cab, showing a state in which a front window in FIG. 1 is fully opened.

FIG. 3 is an enlarged view near a skylight and a sunshade in FIG. 2;

FIG. 4 is a side view showing a conventional operator cab body.

5 is a vertical sectional view of a portion A in FIG. 4;

[Explanation of symbols]

 2,7 skylight 3 gutter 4,9 front window 5 cab 6 ceiling 8 front 10 gutter member 11 bracket 12 sunshade

Claims (2)

(57) [Scope of request for utility model registration] A gutter member having elasticity in a vertical direction is attached to a front edge of the skylight over substantially the entire width of the skylight, and the front edge of the gutter member is positioned below the sunshade when the skylight is closed. A cab for construction machinery, characterized in that the cab is constructed as follows. 2. A cab for a construction machine, wherein brackets are erected at upper right and left ends of a front upper portion of the cab, and a sunshade is pivotably supported between the brackets.