JP2005146781A5 - - Google Patents

Description

Cabin window opener

  The present invention switches a cabin rear window (rear window), side window (side window), a glass-like door that also serves as a window, and a door equipped with a window between a half-open state and a fully-closed state. The present invention relates to a cabin window opening and closing device that can be held.

  In the operation of a tractor or the like, it is common to travel with the cabin door closed, but sometimes the vehicle travels with the cabin door in a half-open state, for example, when checking the ventilation or working position.

Conventionally, in a window opening and closing device that holds a door or the like in a half-open state, as shown in Japanese Patent Laid-Open No. 2002-81234, an arm that can rotate to the outside of the cabin is supported on the pillar of the cabin, and locked to the arm. A portion (a striker) is provided to hold the door in a half-open state.
JP 2002-81234 A

  In the conventional configuration, the cabin door can be held in a fully closed state and a half open state, but the rotary arm is provided with only a half lock striker that holds the door in a half open state. The full lock striker that keeps the fully closed state is configured to be mounted separately on the pillar. For this reason, the number of parts and assembly man-hours increase in production, resulting in high production costs. In actual tractor work, no arm is required when the cabin door is locked in the fully closed position, and visibility to the outside of the cabin is improved. There was a problem that obstructed the action and operation because the clothes were caught.

For this reason, the present invention provides an arm member (31) provided with a positioning mechanism (31) for holding the cabin frame (6) in a state along the frame (6) and in a state protruding from the cabin. 7), and the rotation base of the arm member (7) is provided with a first locked portion (9) for holding the window (3) in a fully closed state, and the tip of the arm member (7). The portion is provided with a second locked portion (8) for holding the window (3) in a half-open state, and the locking member (4) is locked to the second locked portion (8). A cabin window opening and closing device characterized in that it is provided with an elastic member (32) that elastically supports the arm member (7) at times.
(Function)
In the cabin window opening and closing device configured as described above, the arm member (7) that holds the engagement member (4) on the window (3) side freely engages and disengages, and the window (3) is held in a half-open state. Is projected outside the room, and in the fully closed state, it is stored in the cabin.

  As a result, the arm member (7) is provided with the respective locked portions (8, 9) for holding the window (3) in the fully closed state and the half open state on the same member. Alternatively, assembly man-hours can be reduced, and production costs can be kept low.

Moreover, since this arm member (7) is located on the frame (6) of the cabin even when the window (3) is fully closed, it does not get in the way and does not impair the comfort of the vehicle. Furthermore, since the arm member (7) is elastically supported by the elastic member (32), when the window (3) is held in a half-open state, the arm member (7) can be free of play.

Hereinafter, based on the drawings, an embodiment in which the present invention is provided in an agricultural tractor serving as a work vehicle will be described.
First, the configuration of the tractor 1 and its cabin 2 will be described.

  As shown in FIG. 5, the tractor 1 has an engine E mounted inside a bonnet 10, and the rotational power of the engine E is transmitted to the left and right front and rear wheels 12 </ b> F and 12 </ b> R via each transmission in the mission case 11. And is configured to travel. The cabin 2 includes four columns (front columns 14F and 14f, rear columns 14R and 14R) on the front, rear, left and right, and left and right lower frames 13 and 13 are disposed on the lower side of the column, and the lower frame. 13 and 13 are configured to be attached to the mission case 11 via brackets, mount rubber, and the like.

The cabin 2 has a configuration including a cockpit S, a steering handle 15, and various pedals, levers, and switch operating mechanisms as is conventionally known.
An example of the operation mechanism will be described. As shown in FIGS. 6 and 7, the floor 17 of the tractor 1 is provided with an accelerator pedal 18 on one side of the left and right sides, and an operation frame 24 is set up outside the pedal 18. And an operation unit 19 of an external work machine is provided. Further, the operation frame 24 is provided with a through hole 22 through which an operation wire is inserted in the floor 17, and a flange 23 is attached around the through hole 22 so as to stand a U-shaped frame in plan view. Yes.

  Further, as shown in FIG. 8, the cabin door 25 attached to the rear strut 13R of the cabin 2 has a single glass member bent outward, and has a horizontal handle 26 at the upper and lower intermediate portions thereof. A door lock device 28 is attached to the front of 26.

Next, the rear window 3 of the cabin 2 provided with the window opening and closing device of the present invention will be described with reference to FIGS.
The rear window 3 is supported by an upper frame 5 that connects the upper ends of the rear struts 14R so that the rear window 3 can be opened and closed rearwardly through a hinge, and an L-shape having a locking arm 4 that serves as a locking member at the lower part of the window. The handle 29 is attached to be freely rotatable.

  On the other hand, a half lock striker 8 that locks the rear window 3 in a half-opened state is formed on the front end side via a resin bracket member 21 on the lower frame 6 side connecting the lower ends of the rear struts 14R. An arm member (hereinafter referred to as a holding arm 7) having a full lock striker 9 that locks in a fully closed state is provided on the base side, and is configured to pivot freely around a fulcrum pin 30 on the bracket. Yes.

  In addition, the full lock striker 9 of the support arm 7 is a substantially “U” -shaped groove that opens the left and right sides of the vehicle body when the arm is housed in the frame width W, and holds the holding arm 4 therebetween. Therefore, the arm sliding portion is formed with a mountain-shaped detent portion 9a in a plan view.

Further, the half-lock striker 8 is also provided with a protruding detent portion 9a so as to be positioned when the holding arm 4 is locked.
In addition, an arcuate guide groove 31 is formed outwardly from the lower surface of the holding arm 7 with the fulcrum pin 30 as a center, and the arm protrudes outward and into the cabin at both ends of the guide groove 31. Positioning holes 31a and 31b that can be fixed in a state are provided. On the other hand, the positioning holes 31a. The positioning pin 27 is engaged with 31b.

  Further, the holding arm 7 is provided with a cushion rubber 32 serving as an elastic member at its distal end, and as shown in FIG. 3, the retaining arm 4 is engaged with the half-lock striker 8 on the distal end side. When the window 3 is held in a half-open state, the cushion rubber 32 is in contact with and fixed to the glass surface.

  2 and 4, when the holding arm 7 is positioned in a state of being housed along the lower frame 6, the locking arm 4 is locked to the full lock striker 9 on the base side and the rear window is locked. 3 is kept fully closed. At this time, the seal 33 provided outside the lower frame 6 is configured to ensure the hermetic holding of the rear window.

  As described above, the holding arm 7 includes the strikers 8 and 9 for holding the rear window 3 in the fully closed state and the half open state on the same member. Man-hours can be reduced and production costs can be kept low.

  Further, since the holding arm 7 is located on the frame 6 of the cabin 2 even when the rear window is fully closed, the holding arm 7 does not get in the way and does not impair the comfort of the vehicle. Further, since the cushion rubber 32 is provided at the tip of the holding arm 7, when the rear window 3 is held in a half-open state, there is no backlash between the window 3 and the arm 7, and the rear Even if the window 3 is caused to collide with the tip of the holding arm, the possibility of damaging both ends is reduced.

  As another embodiment of the present invention, the locking arm 4 is provided on the side of the rear window 3 and the holding arm 7 is provided on the rear column 14R. You can convert to left and right. Further, the holding arm 7 and the locking arm 4 may be provided between the single glass door 25 that also serves as a window and the front support 14F, or may be connected to a separately configured side glass or tractor. It is good also as a structure provided between the rear under glass which can confirm a working machine, and a vehicle body frame.

The top view which shows the effect | action of a holding arm. The side sectional view of the window opening and closing device which made the rear window fully closed. The side sectional view of the window opening and closing device which made the rear window the half open state. The front view of the window opening and closing apparatus which made the rear window a full closed state. The whole tractor side view. The top view inside a cabin. The partial top view inside a cabin. The figure which shows the door of a cabin.

Explanation of symbols

1 Tractor 2 Cabin 3 Rear window 4 Locking arm 5 Upper frame 6 Lower frame 7 Holding arm 8 Half lock striker 9 Full lock striker

Claims (1)

Select between a fully closed state in which the opening / closing window (3) of the cabin (2) mounted on the vehicle (1) is in close contact with the cabin frame (6) and a half-open state through a gap with respect to the cabin frame (6) In the cabin window opening and closing device to be held,
While providing a locking member (4) on the left and right sides or the top and bottom sides of the window (3),
The cabin frame (6) is provided with an arm member (7) having a positioning mechanism (31) for holding the cabin frame (6) in a state along the frame (6) and a state protruding from the cabin. The rotating base portion of (7) is provided with a first locked portion (9) for holding the window (3) in a fully closed state, and at the distal end portion of the arm member (7), the window (3 ) second engaged portion to be held in the half-open state (8) provided, the resilient arm member (7) when the engagement stopping member (4) is engaged to the second locked portion (8) A cabin window opening and closing device comprising a resiliently supporting elastic member (32).