JPS5926069Y2 - Construction machinery cab - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a driver's cab for construction machinery, and particularly relates to an improvement of the window frame structure in the front of the driver's cab.

Figure 1 shows a conventional construction machine such as a hydraulic excavator.
FIGS. 2 to 4 are diagrams showing the operator's cab of the construction machine.

In the figure, 1 is the driver's cab body, 2 is the upper window frame formed on the front of the driver's cab body 1, 3 is the lower window frame formed below the upper window frame 2, and 4 is the lower window frame 3. A crosspiece provided between the upper window frame 2, 5 is an upper window for opening and closing the upper window frame 2, and 6 is a lower window.

The periphery of the lower window 6 is fixed to the lower window frame 3 via a sealing material 7 to close the lower window frame.

The upper window 5 has a sash 53 attached around the glass 51 via a sealing material 52, and rollers 54 rotatably attached to the upper and lower parts of both sides of the sash.

On the other hand, rails 8 for guiding the rollers 54 of the upper window are attached to both sides of the upper window frame 2, and a rail 9 continuous with the rails is attached to the ceiling side of the cab body 1.

Then, the roller 54 is fitted into the rail 8, and as shown in FIG. 3, the upper window 5 is supported by the crosspiece 4, and the upper window frame 2 is closed by the upper window.

Also, by rolling the rollers 54 from the rails 8 to 9, the upper window 5 is moved from the driver's cab main body 1 to the upper window 5, as shown in FIG.
so that it can be moved to the ceiling side.

In addition, 10 is a sealing material to prevent rainwater from entering, 11
is the upper window cushioning material attached to the crosspiece 4.

By the way, in the conventional driver's cab shown above, the crosspiece 4 is provided between the upper window 2 and the lower window 3, so even if the upper window 5 is moved toward the ceiling, the driver's field of view is blocked by the crosspiece 4. be interrupted.

Therefore, the driver is forced to look ahead (particularly downward) through the crosspiece or through the lower window 3.

That is, when looking through the lower window 3, the glass is distorted and it looks ugly, and when trying to look through the crosspiece 4, the driver's upper body leans forward, which makes the driving posture poor and contributes to fatigue. , and lacked safety.

In view of these problems, the present invention eliminates the crosspiece to prevent the driver's view from being obstructed, and also makes it possible to reliably support the upper window without worrying about the abolition of the crosspiece, thereby improving the visibility. The purpose is to provide a cab for construction machinery that can improve the performance of construction machinery.

In order to achieve the above object, the present invention attaches protrusions on both sides of the upper window and attaches a gasket to the lower edge of the upper window to seal between the lower edge of the upper window and the upper edge of the lower window. ,
The present invention is characterized in that a support for receiving the protrusion of the upper window is attached to the upper window frame.

Next, an embodiment of the present invention will be described with reference to FIGS. 5 to 7.

The same parts as in the conventional example are given the same reference numerals.

The operator's cab for construction machinery of the present invention has an upper window frame 2 and a lower window frame 3 formed on the front side of the operator's cab body 1, and the upper window frame 2 and the lower window frame 3 are formed by an upper window 5 and a lower window 6. The upper window 5 can be moved toward the ceiling of the driver's cab body 1.

This point is similar to the conventional example.

In the present invention, protrusions 12 are attached to both sides of the upper window 5, and a gasket 13 is attached to the lower edge of the upper window 5 to seal between the lower edge of the upper window and the upper edge of the lower window 6. A support 14 for receiving the protrusion 12 of the upper window is attached to the window frame 2.

That is, the protrusion 12 is attached to the lower part of the inner side of the sash 53 in the upper window 5 so as to protrude inward of the driver's cab body 1.

The gasket 13 is attached to the lower edge of the sash 53 along the lower edge and in correspondence with the upper edge of the lower window 6 using an adhesive or the like.

The support 14 has an upper plate part 141 equipped with a shock absorber 15 made of an elastic material attached to the upper window frame 2, and is arranged at a lower part of the upper window frame perpendicularly to the upper plate part and from the upper plate part 141. A side plate portion 1 extending toward the rear of the driver's cab body 1
42 are integrally formed.

As shown in FIGS. 5 and 6, when the upper window 5 closes the upper window frame 2, the protrusion 12 is received by the upper plate part 141 of the supporter through the buffer 15. The upper window 5 can be supported by the support 14.

At that time, the gasket 13 contacts the upper edge of the lower window 6, so that the gasket 13 contacts the lower edge of the upper window 5 and the lower window 6.
This allows a seal to be formed between the upper edge of the

The lower window 6 is rotatable inward of the driver's cab body 1 about its lower end.

That is, a bearing body 18 is attached to the lower end of the lower window 6, and the shaft 17 attached to the lower edge of the lower window frame 3 is fitted into a groove formed in the lower part of the bearing body. It is rotatably supported as a fulcrum.

Further, when the lower window 6 is moved upward, the bearing body 18 is formed so that the shaft 17 is removed from the groove of the bearing body 18, that is, the lower window 6 can be removed from the lower window frame 3.

The bearing body 18 rotates about the shaft 17, thereby supporting the lower window 6 so as to be rotatable inward of the driver's cab body 1.

Note that the lower window 6 is not provided with a satush.

Further, the lower window 6 is equipped with engaging members 19 equipped with locking mechanisms on both sides of the inner side, and the respective retaining members 19 are attached to the lower window 6.
A handle 20 is attached between them.

On the other hand, the side plate portion 142 of the support 14 has a closing engagement hole 142a that can be engaged with the engagement member 19, and an engagement hole 142b that is located inward of the driver's cab body 1 from the closing engagement hole. is installed.

Then, as shown by solid lines in FIG. 5, the lower window 4 is closed with respect to the lower window frame 3 by engaging the lower window engaging member 19 with the closing engagement hole 142a of the support.

Further, as shown by the broken line in FIG. 5, by engaging the retaining member 19 with the retaining hole 142b, the lower window 4 can be held individually in the open position.

Note that 21 is a sealing material for preventing rainwater from entering, and is arranged on the front of the driver's cab body 1 so as to surround the upper window 2 and the lower window frame 3.

In the present invention, as described above, the protrusion 12 of the upper window 5 is received by the supporter 14 of the upper window frame 2, so that the supporter 14 can reliably support the upper window 5.

Therefore, as shown in FIG.
When moved to the ceiling side, compared to the conventional example in which a crosspiece is provided, there is no obstruction to the view, so the field of view can be expanded accordingly.

Furthermore, when the upper window 5 is supported by the support 14, the gasket 13 can seal between the lower edge of the upper window 5 and the upper edge of the lower window 6, preventing rainwater from entering the cab body 1. It can be prevented.

As is clear from the above embodiments, according to the present invention,
Since the driver's field of vision can be expanded, visibility and safety can be improved accordingly.

[Brief explanation of the drawing]

Figure 1 is an overall side view showing an example of a conventional construction machine, Figure 2
The figures are a view taken along arrows II-II in Fig. 1, Fig. 3 is a longitudinal sectional view of a conventional driver's cab, and Fig. 4 is a longitudinal sectional view of the operator's cab with the upper window moved toward the ceiling. . Figure 5 is a cutaway sectional view showing the main parts of the driver's cab of the present invention;
The figure is a vertical cross-sectional view showing the entire driver's cab, and FIG. 7 is a vertical cross-sectional view showing the driver's cab with the upper window moved toward the ceiling. DESCRIPTION OF SYMBOLS 1... Driver's cab body, 2... Upper window frame, 3... Lower window frame, 5... Upper window, 6... Lower window, 14... Support tool. 12...Protrusion, 13...Patch

Claims (1)

[Scope of utility model registration request] An upper window frame and a lower window frame formed on the front side of the driver's cab body, an upper window and a lower window that block the upper window frame and the lower window frame, and rollers attached above and below the satsush of the upper window, In a driver's cab equipped with the roller guide rails provided along the ceiling of the driver's cab body on both sides of the upper window frame, there is a gap between the lower edge of the upper window and the upper edge of the lower window at the lower edge of the upper window. A construction machine is equipped with a gasket for sealing, a projection is attached to the bottom of the two-part window on both sides of the sash facing inward of the operator's cab body, and a support for receiving the projection is attached to the upper window frame. driver's cab.