JPS5912368Y2 - Windlock device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of a locking device for a window of a cab frame of a construction machine or a cargo handling machine.

Fig. 1 is an overall side view of a cab incorporating a wind lock device, in which 1 is a cab frame, 2 is a window, and 3 is a guide rail, and the window 2 can be stored along the guide rail 3 from the front of the cab to the ceiling.

Figures 2 and 3 show conventional windlock devices, with 4
is a roller attached to one end of the window 2 and rolls within the guide rail 3; 5 is a lock plate attached to the cab frame 1; 6 is a bracket fixed to the window 2; 7 is a roller that moves within the bracket 6; A lock pin 5a having a diameter is a hole drilled in the lock plate 5 into which a lock pin 7 can be inserted.

The window 2 is locked by moving the lock pin 7 within the bracket 6 using the lever 7a, inserting it into the hole 5a.

Since the window 2 is manually locked, it is sometimes forgotten to lock the window 2, and since the window 2 is retractable from the ceiling, there is a risk that the window 2 will fall and cause a serious accident.

In order to prevent the above-mentioned conventional accidents, the present invention automatically locks the windows, eliminating the need to forget to lock the windows.

An embodiment of the present invention is shown in FIGS. 4 and 5, 1 is a cab frame, 2 is a window, 3 is a guide rail,
The window 2 is stored from the front of the cab to the ceiling along the guide rail 3.

4 is a roller attached to one end of the window 2 and rolls within the guide rail 3; 11 is a bracket attached to the cab frame 1; and 12 is a lock plate, which is pivotally connected to a pin 13 attached to the bracket 11. .

A spring 14 is attached to the bracket 11 and its tip is attached to the lock plate 12 to apply a rotational force to the lock plate 12 in the clockwise or counterclockwise direction.

Reference numeral 15 denotes a slit cut in the guide rail 3, which allows the lock plate 12 to protrude inside the guide rail 3.

16 is a cushion rubber provided on the bracket 11, which together with the lock plate 12 rotated counterclockwise lock the window 2.
The movement of the device is restrained and the device is locked.

A stopper 19 is provided on the bracket 11 and restricts clockwise rotation of the lock plate 12.

Next, to describe the operation of the present invention, by moving the window 2, the roller 4 rotates within the guide rail 3,
When the lock plate 12 is pushed down and passed and the window 2 reaches the position where it contacts the cushion rubber 16, the lock plate 12 is pushed up by the spring 14, projects onto the guide rail 3, becomes a stopper for the roller 4, and works together with the cushion rubber 16. The movement of the window 2 is stopped and the window 2 enters a locked state.

To release the lock, manually rotate the lock plate 12 until it is stopped by the stopper 17.

The lock plate 12 is held in that state by a spring 14, and when the roller 4 pushes down the lock plate 12 and passes through it by moving the window 2 from the lock position, the spring 14 generates a rotational force in the counterclockwise rotation direction on the lock plate 12. Then, the lock plate 12 is pushed up until it comes into contact with the inner wall of the guide rail 3 and stops, thereby returning to the locking movable state.

As described above, the present invention has a guide rail and a bracket attached to the cab frame, a lock plate pivoted to the bracket so as to be able to protrude into the guide rail by a spring, and a roller that moves within the guide rail at one end of the window. This wind lock device has a cushion rubber attached to the bracket that stops the roller together with the lock plate, so by automatically locking the window, it is possible to prevent the accident of the window falling, and there is no need to forget to lock the lock. It has an excellent locking effect.

[Brief explanation of drawings]

Fig. 1 is an overall side view of a cab incorporating a wind lock device, Fig. 2 is a conventional wind lock device, Fig. 3 is a sectional view taken along line A-A in Fig. 2, and Fig. 4 is an embodiment of the present invention. of,
FIG. 5 is a sectional view taken along line BB in FIG. 4.

Claims (1)

[Scope of utility model registration request] A guide rail and a bracket are attached to the cab frame, a lock plate is pivotally attached to the bracket by a spring so as to be able to protrude into the guide rail, a roller that moves within the guide rail is attached to one end of the window, and the roller is rotated. A wind lock device characterized in that a cushion rubber is attached to the bracket to be stopped together with the lock plate.