JPS6347644B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a rear window of a cabin of a riding agricultural machine, and particularly relates to an improvement of a rear window of a tractor cabin which is divided into upper and lower parts. be.

[Prior Art and Problems to be Solved by the Invention] Conventionally, the rear window of the cabin of this type of tractor has two stages, upper and lower, and the rear window is vertically integrated with the upper end as the center of rotation. A rear window that can be opened and closed at different times is described in Japanese Utility Model Application Publication No. 54-144617. However, as mentioned above, the rear window described in this publication opens and closes outward up and down with the hinge at the upper end as the center of rotation, so its rotation trajectory is large, and the work equipment is attached to the rear of the tractor. When the rear window is connected, the rear window comes into contact with the working machine when the rear window is opened, making it difficult to open the rear window widely. Furthermore, a rear window in which the upper and lower windows can be opened and closed independently is described in Japanese Utility Model Application No. 53-100628. Accordingly, in the device described in this publication, the rear window of the cabin can be opened by rotating it toward the seat inside the cabin. Then, there is a seat within this rotation trajectory, so
The seat can be moved outside this rotational trajectory. That is, when attempting to open the rear window inside the cabin, the seat itself must be moved forward. In such cases, various devices are installed near the seat, and if the seat is moved forward,
If the space becomes narrower, it may cause some inconvenience.
Therefore, there are technical problems that need to be solved in order to be able to open the rear window sufficiently without interfering with the work equipment connected to the tractor and without moving the driver's seat forward. will arise.

[Means for Solving the Problems] The present invention has been proposed in view of the above-mentioned problems, and includes connecting the vicinity of the upper rear edge of the rear window of the cabin to the upper rear edge member of the cabin. The rear window of the cabin is hinged so that it can be opened and closed vertically in one piece, and the rear window is divided into an upper window and a lower window, and the rear window can be opened and closed to the outside of the cabin. In addition, the lower window can be freely opened inward of the cabin around a hinge provided at the upper end thereof, and further, when the lower window is opened, it is formed to be fixed inside the upper window. It is an object of the present invention to provide a rear window of a cabin of a riding agricultural machine, which is characterized by the following.

[Operation] When opening the lower window of the rear window of the present invention, the entire rear window is opened to the rear outside, and then the lower window is opened forward, that is, to the inside of the cabin. In such a case, the lower window can be opened forward without having to open the entire rear window to the rear. That is, when the lower window is opened forward, it can be opened without contacting the seat located in front, and can be fixed to the upper window. Therefore, when opening the entire rear window, it is possible to open the window extremely easily without colliding with the work equipment connected to the rear, and also without colliding with the seat in front when opening the lower window. Become. Therefore, the closing operation of the lower window is similar to the opening operation as described above: first, the entire rear window is opened slightly backward, and then the lower window is closed, so that the entire rear window does not come into contact with the rear working machine.
Furthermore, the lower window can be opened and closed without touching the seat in front of the passenger. Therefore, there is no need to slide the seat back and forth, and not only ventilation can be achieved by opening the lower window, but also adjustment of the working equipment at the rear can be freely performed through the opening of the lower window. .

[Embodiments and Effects of the Invention] An embodiment of the present invention will be described below with reference to the attached drawings. Reference numeral 1 denotes a cabin, and hinges 3, 3 are used to connect the upper rear edge member 2 of the cabin 1 to the rear part. The upper edge of window 4 is hinged. Moreover, this rear window 4 is constructed so that it can be opened and closed up and down only in the outer direction of the cabin 1. When the rear window 4 is closed as shown in FIG. It is locked by the locking piece 7, but if the handle 5b of the rear window lock 5 is rotated to release the latch 5a from the locking piece 7, the rear window 4 is opened outward as shown in FIG. It will be possible. The rear window 4 is divided into an upper window 8 and a lower window 9. Furthermore, the upper window 8 is installed between an upper frame 10 and an intermediate frame 11, and the lower window 9 has its upper end connected to a hinge 13. It is hinged to the intermediate frame 11 so that it can be opened and closed only from the inside of the cabin 1. A damper mechanism 14, such as an oil damper, is connected to the side frame 15 of the rear window 4 and the upper window 8, respectively, so that the piston rod 14b of the damper cylinder 14a can gently move in and out. Further, sealing materials 16, 16, etc. are provided on the upper frame 10, intermediate frame 11, etc., respectively.
The sealing material of the lower frame 12 and the sealing material provided at the lower end of the lower window 9 are each a sealing material 16 containing a magnet.
It is set as a. In this way, when the lower window 9 is opened by the action of the magnet and comes into contact with the inner surface of the upper frame 10, the magnet attracts and fixes to the inner surface of the upper frame 10, and furthermore, the lower window 9 Even when 9 is closed, each magnet attracts and remains fixed. Therefore, even if the user forgets to lock the rear window lock 5, the rear window 4 will not swing.

Since one embodiment of the present invention is as described above, when the rear window 4 is to be opened, the piston rod 14b of the damper cylinder 14 is first extended. In such a case, the rear window 4 opens diagonally rearward as shown in FIG. Of course, when no working equipment is connected to the rear of the tractor, it can also be opened almost horizontally to provide sufficient ventilation. When a working machine is connected to the rear of the tractor, the rear window 4 cannot be fully opened as described above, so it is opened slightly rearward, and the lower window 9 is attached to the hinge 13 at its upper end. It rotates inward of the cabin 1 with the center of rotation as the center of rotation. And the fourth
As shown in the figure, by adhering the magnet-containing seal 16a provided at the lower end of the lower window 9 to the inner surface of the upper frame 10, the lower window 9 is fixedly attached in an overlapping state with the upper window 8. becomes stable. When opening the lower window 9 toward the inside of the cabin 1 as described above, first, because the rear window 4 is slightly opened rearward, the hinge 13 at the center of rotation of the lower window 9 is displaced rearward. Therefore, there is a seat outside the opening/closing rotation locus of the lower window 9, so there is no need to move the seat forward, and the opening operation of the rear window 4 also allows the work machine connected to the tractor to There is no such thing as a collision. Therefore, it is possible to reach rearward from the opening and adjust the working equipment at the rear, as well as to provide sufficient ventilation.
With the above configuration, the entire rear window 4 can be brought as close as possible to the front seat, so a compact cabin can be constructed.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; FIG. 1 is a rear view of the rear window, FIG. 2 is a longitudinal side view thereof, and FIGS. 3 and 4 are longitudinal side views illustrating the open state. Description of symbols, 1: Cabin, 2: Upper rear edge member,
3, 13: Hinge, 4: Rear window, 8: Upper window,
9: Lower window, 10: Upper frame, 11: Middle frame, 1
2: Lower frame.

Claims (1)

[Claims] 1. The upper rear edge of the rear window of the cabin is hinged to the upper rear edge member of the cabin so that the rear window can be opened and closed vertically as a unit, and the rear window is connected to the upper rear window of the cabin which is divided into an upper window and a lower window. At the rear window,
The rear window can be opened and closed to the outside of the cabin, and the lower window can be opened to the inside of the cabin around a hinge provided at its upper end. A rear window of a cabin of a riding agricultural machine, characterized in that it is formed so as to be fixed on the inside of the upper window.