JPH07116728B2 - How to automatically open and close windows on 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 method for automatically opening and closing a window of a construction machine (hereinafter simply referred to as an opening and closing method), and more specifically, for moving a front window of a cabin of a construction machine from an open position to a closed position. And a method of automatically locking and sealing all in the closed position.

[0002]

2. Description of the Related Art FIG. 7 shows a power shovel as an example of a construction machine to which the opening / closing method of the present invention is applied.
A cabin 100 is provided with a window frame F on its front surface. A window W is attached to the window frame F. As shown in FIG. 8, the window W is movable between a closed position I on the front surface of the cabin 100 and an open position (storage position) III on the inner surface of the cabin ceiling.
In the closed position, the window W is configured so as to be tilted slightly rearward from the vertical, and the space S only slightly swings (between I and II in FIG. 8) on the lower end side as an axis. Exists.

Conventionally, the opening and closing of the window W is all done manually, and the lock and seal are also done manually. The lock and the seal are for manually pressing the window W to the position II in FIG. 8 and then rotating the manual cam in the same manner as the opening window of a general building to press and fix the window to the window frame. .

However, it is considerably troublesome for the driver to perform the manual work as described above. Therefore, the applicant has recently proposed a method of automatically opening and closing a window by using a control cable and its drive device (Japanese Patent Application No. 2-114633 and Japanese Patent Application No. 2102108).
issue).

The automatic window opening / closing method employs a locking device using a catch similar to a door lock of an automobile. In this type, the catch that is in contact with the window is rotated by the force of the closing operation of the window to restrain the window. In order to release the restraint of the window, a solenoid actuator for rotating the catch in the reverse direction, a manual lever, or the like is provided.

[0006]

The locking device using the above-mentioned catch originally fixes the window at a predetermined position of the window frame,
It is for holding. However, when it is used in the automatic opening / closing method, it has a sealing function at the holding position at the same time, and has a role of automating the opening / closing operation including the operations of locking and pressing the lock, releasing the lock and releasing the seal. . Therefore, the lock device adjusts the stroke of the drive unit in accordance with the swing stroke of the upper end of the window (between I and II in FIG. 8) and simultaneously adjusts the seal position (position II in FIG. 8) that fluctuates due to the cabin installation. it is necessary to perform two adjustments say attaching and fixing simultaneously adjusted, those requiring very time to adjust.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is intended to further automatically lock and seal a window configured to automatically move from an open position to a closed position. By using a method that does not use a catch for the lock and seal, it is possible to easily cope with fluctuations in the swing width of the window in the closed position, and use a locking device that can be easily interlocked with automatic opening and closing of the window. The purpose of the present invention is to provide a method for opening and closing the window.

[0008]

SOLUTION: By using left and right window frames and moving means arranged in front of and above a driver's seat of a cabin of a construction machine, a window is operated in a front position and an open position of a driver's seat. A method of opening and closing a window that automatically moves between the upper parts of the seats. When the window reaches the front lower end, which is the closed position of the window, the two upper end portions of the window are electrically linked to the left and right window frames when the window reaches the front lower end. Apply a force to press,
While locking the window in the closed position, when the window is moved from the front lower end in the closed position toward the open position, the windows to the left and right window frames that have previously worked on both upper ends of the window are Try to release the pressing force.

[0009]

[Operation] When the window is automatically closed and reaches the fully closed position, that is, when the window has completely descended to the front of the cabin, the pressing means is electrically locked to lock the metal fittings. Engage. Then the pressing means
The window is pressed against the front window frame or the like provided with the seal member through the lock fitting to maintain the state. By doing so the wind lock and seal is made.

On the contrary, when the window is opened, the pressing means is first operated so as to release the pressing. Then, at the closed position of the window, the engagement between the lock fitting and the pressing means is released, so that the window can be subsequently opened. In the window opening / closing method as described above, the operation from the fully open position to the locked position and from the locked state to the fully open position can be performed with one touch, because the operation is electrically linked to the operation of the lock device at the closed position.

[0011]

[Examples] Next, a method of opening and closing a window according to the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a perspective view showing an embodiment of a locking device used in the opening / closing method of the present invention, FIG. 2 is a sectional view showing a state in which the locking device of FIG. 1 is attached to a front window, and FIG. Figure 1
4 is a partially cutaway front view of the locking device of FIG.
FIG. 5 is a sectional view taken along line V, FIG. 5 is an explanatory view showing the operation of the lock device of FIG. 1, and FIG. 6 is a front view showing another embodiment of the lock device used in the opening / closing method of the present invention.

In FIG. 2, W is a window, which is opened and closed by being guided by a guide rail G attached to the cabin 100 side. The guide rail G is the cabin 100.
The upper guide rail G1 extends along the ceiling of the cabin and the lower guide rail G2 extends along the front surface of the cabin 100. The upper end of the window W is guided by the upper guide rail G1 and the lower end of the window W is guided by the lower guide rail G2. There is. A pair of lock fittings 1 is connected to the upper end of the window W. Further, a pair of pressing means 2 corresponding to the lock fitting 1 is provided on the ceiling of the cabin. The lock fitting 1 and the pressing means 2 constitute a lock device 3.

As shown in FIG. 3, the lock fitting 1 includes a slide plate 4 which moves along the upper guide rail G1 together with the window W, and an engagement pin 5 which is fixed to the slide plate 4 and engages with the pressing means. , A guide roller 6 for engaging the upper guide rail G1 and smoothly moving the window. A long hole 7 which is long in the vertical direction is formed at one end of the slide plate 4. The lock metal fitting 1 is swingably connected to the window W by the connection shaft 8 protruding from the upper end of the window W penetrating into the elongated hole 7.

On the other hand, the pressing means 2 is, as shown in FIGS. 1 and 3 to 4, a cam plate 9, a screw rod 10, a drive motor 11, a nut member 12, a claw member 13, and a guide rod 14. It consists of and. The cam plate 9 is fixed to the cabin 100 side in parallel with the upper guide rail G1. The screw rod 10 is also parallel to the upper guide rail G1, and is supported <br/> lifting as the cam plate 9 for rotation around own axis. The drive motor 11 is connected to the screw rod 10 via a coupling 15. The guide rod 14 is fixed to the cam plate 9 in parallel with and close to the screw rod 10. The nut member 12 is formed with a screw hole 16 screwed into the screw rod 10 and a guide hole 17 slidably fitted in the guide rod 14 (see FIG. 4). Therefore, the nut member 12 moves along the screw rod 10 and the guide rod 14 which are rotated by the drive motor 11 via the speed reducer (not shown).

A claw member 13 having an engaging claw 18 is slidably fitted on the outer side of the nut member 12. Claw member 1
The sliding direction of 3 is a direction (vertical direction) toward the lock fitting 1 perpendicular to the axis of the screw member 10 or the guide lock 14,
Thereby, the engaging claw 18 of the claw member 13 can be engaged with or disengaged from the engaging pin 5 of the lock fitting 1. A guide pin 19 (see FIG. 4) is provided on the claw member 13 so as to project, and the guide pin 19 is engaged with a cam hole 20 (see FIGS. 3 to 4) of the cam plate 9. The cam hole 20 extends parallel to the upper guide rail G1 from the front side (front end) of the cabin 100, and is inclined upward from the middle to the rear end.

Next, referring to FIG. 5, the operation of the lock device 3 constructed as above will be described. In FIG. 5, the window W1 in the closing operation is shown by a two-dot chain line, the window W2 that has reached the closed position is shown by a solid line, and the window W3 in a locked state is shown by a broken line. Although the three symbols W1, W2, and W3 are attached to the windows,
All the windows are the same, and the symbols are changed in time series for convenience.

The window is opened and closed by a motor (not shown) separate from the drive motor 11 via a control cable (not shown). When the window W1 is in the closing operation, the nut member 1
Both 2 and the claw member 13 are located at the rear ends of their strokes (indicated by a two-dot chain line in the figure). That is, the claw member 1
The guide pin 19 of No. 3 is in contact with the rear end of the cam hole 20 (the condition shown in FIG. 3), and the drive motor 11 is also stopped. When the window W2 reaches the closed position (indicated by the solid line in the figure), the screw rod 10 is electrically interlocked to rotate, and the nut member 12 moves toward the front end (rightward in FIG. 5 ). Then, the pawl member 13 moves diagonally downward while the guide pin 19 is guided by the cam hole 20, and the engaging pawl 18 just engages with the engaging pin 5 (shown by a solid line in the figure). When the screw rod 10 is continuously driven as it is, the claw member 13 moves along the horizontal portion of the cam hole 20 and presses the window W3 against the window frame F. Wind W then
Since its upper end is disengaged from the guide rail and the periphery is pressed against the seal member provided on the window frame F, locking and sealing are performed.

FIG. 6 shows another embodiment of the lock device used in the opening / closing method of the present invention. This locking device 31
Like the lock device 3 of FIG. 1, is configured of a lock fitting 32 connected to the upper end of the window W and a pressing means 33 fixed to the cabin 100 side. However, this embodiment uses a rack and pinion mechanism,
It differs from the previous embodiment (FIG. 1).

As shown in FIG. 6, the lock fitting 32 is composed of a slide plate 35 having a long hole 34 for connecting with the window W on the front end side as in the case of FIG. Further, it also has a guide roller 36 so as to be guided by the guide rail G1. But,
No engaging pin is provided, and teeth (hereinafter, referred to as a rack) 37 are engraved on the upper end side of the slide plate 35.

On the other hand, the pressing means 33 comprises a gear 38 meshing with the rack 37, and a drive motor 39 for rotationally driving the gear 38 via a speed reducer (not shown). The gear 38 is arranged so as to just contact the front end portion of the rack 37 when the window W reaches the closed position by the closing operation.

In the lock device 31 constructed as described above, the gear 38 is electrically interlocked to rotate when the window W automatically reaches the fully closed position. Then, the upper end of W is moved toward the window frame F (rightward in FIG. 6) via the lock fitting 32, and the entire window W is pressed against the window frame, so that locking and sealing are automatically performed. . In the case of the opening operation of the window, the above operation is performed in the reverse order.

[0023]

According to the method for automatically opening and closing the window of the construction machine according to the present invention, the operation from full opening to locking and from the locked state to full opening can be performed with one touch in conjunction with the opening / closing operation of the window. . Moreover, since the locking of the window in the closed position does not rely on a mechanical method utilizing the force of the closing operation of the window, it is easy to adjust the locking device.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a locking device used in the opening / closing method of the present invention.

FIG. 2 is a cross-sectional view showing a state where the locking device of FIG. 1 is attached to a front window.

3 is a partially cutaway front view of the locking device of FIG. 1. FIG.

4 is a sectional view taken along line IV-IV of FIG.

FIG. 5 is an explanatory view showing the operation of the lock device of FIG.

FIG. 6 is a front view showing another embodiment of the lock device used in the opening / closing method of the present invention.

FIG. 7 is a perspective view showing an example of a construction machine to which the opening / closing method of the present invention is applied.

8 is an explanatory diagram showing an opening / closing operation of a front window of the construction machine of FIG. 7. FIG.

[Explanation of symbols]

1 ... Lock metal fittings, 2 ... Pressing means, 3 ... Locking device, 4 ...
Slide plate, 5 ... engagement pin, 7 ... long hole, 9 ... cam plate, 10 ... screw rod, 11 ... drive motor, 12 ... nut member, 13 ... claw member, 20 ... cam hole, 31 ... locking device,
32 ... Lock metal fittings, 33 ... Pressing means, 34 ... Long hole, 37
... racks, 38 ... gears, 39 ... drive motors, F ... window frames,
W ... wind.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Bibliography flat 4-62774 (JP, U) real development Sho 62-177877 (JP, U) real development Sho 61-98610 (JP, U) real development Sho 62- 94271 (JP, U)

Claims (1)

[Claims] 1. A window between a driver seat in a closed position and an upper position of a driver seat in an open position using left and right window frames and moving means arranged in front of and above a driver seat of a cabin of a construction machine. Is a method of opening and closing a window that automatically moves, when the window reaches the front lower end which is the closed position of the window, it electrically operates to apply a force to press both upper ends of the window against the left and right window frames. While the windows in the closed position are locked, the left and right window frames that have worked on both upper ends of the windows in advance are moved when the windows move from the front lower end in the closed position toward the open position. A method for opening and closing a window of a cabin of a construction machine, characterized in that the pressing force on the window is released.