JP4189995B2 - Cabin opening and closing device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a cabin opening / closing device used for a tractor, a combine, or the like.
[0002]
[Prior art]
There is a structure in which a door panel (side door) of a tractor cabin is attached to an intermediate column through a hinge so as to be freely opened and closed. (For example, see Patent Document 1)
[0003]
[Patent Document 1]
Japanese Patent No. 3045442 [0004]
[Problems to be solved by the invention]
In the above-mentioned conventional means, the door is always open to the maximum opening angle. For example, when there is an obstacle such as a structure or an agricultural machine on the side, there is an inconvenience such as contact when the door is opened and the door being damaged. is there.
[0005]
[Means for Solving the Problems]
In order to solve the above problems, the present invention is configured as follows.
[0006]
A cabin opening and closing device provided with a door stopper (25) for adjusting an opening angle (α) of the side door (18) to a hinge device (21) for opening and closing the side door (18) of the operating cabin (17), The hinge device (21) includes a hook-shaped hinge bracket (22) fixed to the outer surface of the column (20), a long hole (23) and a stopper bolt (on the column (20) and the hinge bracket (22)). 24) and a door stopper (25) fixed to the hinge bracket (22) so that the door stopper (25) can be adjusted in the longitudinal direction. A hinge arm (29) is attached to an open / close fulcrum shaft (28) supported between the upper and lower mounting plates (27) of the bracket (22) so that the rear end side of the side door (18) can be opened and closed. An inclined surface (30) to be brought into contact with the rear end portion (29a) of the hinge arm (29) is formed on the front outer side surface of the door stopper (25), and by adjusting the movement of the door stopper (25), The inclined surface (30) is translated in the front-rear direction, the gap between the rear end (29a) of the hinge arm (29) and the inclined surface (30) is changed, and the opening angle (α) of the side door (18) is changed. ) Can be variably adjusted .
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a side view of the whole, and FIG. 2 is a plan view thereof. In the figure, 1 is a tractor, and left and right front wheels 4 and 4 are installed on both sides of a bonnet 3 in which an engine 2 is installed. A round steering handle 5 is provided at the rear of the steering wheel 5 and a driver's seat 6 is arranged behind the steering wheel 5. Left and right rear wheels 7 and 7 are installed on both sides of the driver's seat 6. The brake pedals 9 and 9 and the clutch pedal 10 are arranged so that an operator can sit on the driver's seat 6 and travel and move the rotary rotary working machine 12 up and down through the three-point link mechanism 11 behind the tractor body. It is configured to be plowed and cultivated.
[0008]
Further, a traveling main transmission lever 13 and an elevating lever 14 for raising and lowering the work implement 12 are disposed on the right side of the driver's seat 6, and a traveling sub transmission lever 15 and a PTO transmission lever 16 for changing the output of the working implement 12. Is arranged on the left side of the driver's seat 6.
[0009]
As shown in FIGS. 3 to 5, the steering door 5 and the driver's seat 6 are provided with a side door 18 that can be freely opened and closed at a passenger door 17a of a driving cabin 17 in which the steering handle 5 is installed. 19 and a hinge device 21 that connects the rear end of the side door 18 to the intermediate column 20 of the driving cabin 17 so as to be freely opened and closed.
[0010]
The hinge device 21 has a hook-shaped hinge bracket 22 fixed at two positions on the upper and lower sides of the outer side surface of the support column 20 and a door fixed to the support column 20 and the hinge bracket 22 through a long hole 23 and a stopper bolt 24 so as to be adjustable in the longitudinal direction. The rear end side of the door 18 can be freely opened and closed by a stopper 25, a front-rear adjustment screw 26 for fixing the stopper 25 to the hinge bracket 22 so as to be adjustable in the front-rear direction, and an opening / closing fulcrum shaft 28 supported between the upper and lower mounting plates 27 of the bracket 22. And an inclined surface 30 to be brought into contact with the rear end portion 29a of the hinge arm 29 is formed on the front outer side surface of the door stopper 25, and the inclined surface 30 is adjusted by movement adjustment of the door stopper 25. Are translated in the front-rear direction, and the gap between the rear end portion 29a of the hinge arm 29 and the inclined surface 30 (the contact position of the end portion 29a) changes. Can constitute the opening angle α of the door 18 so as to change to large or small.
[0011]
As described above, when the nut 24a of the stopper bolt 22 is loosened and the door stopper 25 is moved forward or backward by operating the nut 26a of the adjusting screw 26, the gap between the arm rear end portion 29a and the inclined surface 30 is reduced. Alternatively, the opening angle α of the door 18 is adjusted to be large or small by enlarging.
[0012]
6 to 10 show a configuration in which a door stopper 25 similar to the previous embodiment is fixed to a hinge bracket 22 fixed to the support column 20 by using two upper and lower stopper bolts 24 so as to be movable forward and backward. The stopper 25 has an inclined surface 30 in contact with the arm rear side tip portion 29a on the front outer side surface, and a notch groove 31 engaged with the two stopper bolts 24 on the rear side portion of the stopper 25. The position of the stopper 25 is adjusted in the front-rear direction by operating the two stopper bolts 24, and the opening angle α of the side door 18 is adjusted as in the previous embodiment.
[0013]
The engaging portion with the stopper bolt 24 for attaching the stopper 25 to the hinge bracket 22 may be any of a long hole 32 as shown in FIG. 10 in addition to the notch groove 31 as shown in FIGS.
[0014]
As is apparent from the above, the door stopper 25 that adjusts the opening angle α of the side door 18 is provided on the hinge device 21 that is a hinge for opening and closing the side door 18 of the operation cabin 17, thereby Even if there is an obstacle such as a structure in the case, or when the tractor is equipped with work implement parts such as paddy wheels, the door 18 is opened by the stopper 25 even when the maximum opening angle α of the side door 18 interferes. By restricting the angle α, interference with these can be surely prevented. Therefore, when the opening angle α of the side door 18 needs to be adjusted, the door stopper 25 is used to easily regulate the maximum opening angle α of the side door 18. Thus, it is possible to reliably prevent an accident such as the side door 18 coming into contact with a side obstacle or equipment, thereby improving the reliability of the work.
[0015]
Further, by making the mounting position of the door stopper 25 adjustable, the opening angle α of the side door 18 is variably adjusted, so that the door opening angle corresponding to the gap between the side door 18 and the side obstacles and equipments. By adjusting to α, the work can be optimized.
[0016]
As shown in FIG. 11, a hinge stopper 25 having a flat surface 33 for making a clearance between the rear end portion 29a of the hinge arm 29 constant is provided with a stopper bolt on the intermediate post 20a and the hinge bracket 22 made of square pipe. 24. When necessary, the hinge stopper 25 is attached to restrict the side door 18 to a constant opening angle α. On the other hand, when the door 18 is to be opened at the maximum opening angle α, the hinge stopper 25 is removed. The side door 18 can be adjusted in the two-stage opening angle α by attaching or removing 25.
[0017]
As shown in FIGS. 12 and 13, both side base ends of a hollow gate-shaped assist bar 35 for getting on and off are fixed to the front side column 34 of the driving cabin 17, and the grip of the assist bar 35 is fixed to the left and right outside of the driving cabin 17. The portion 35a is protruded, the lamp bracket 36 is integrally fixed (welded) to the upper side bar portion 35b of the assist bar 35, and the flasher lamp 37 having front and rear light projecting portions 37a and 37b is attached to the bracket 36. The flasher lamp 37 is provided so as to be protected by the assist bar 35, and the harness 38 of the flasher lamp 37 is inserted through the pipe space of the assist bar 35 and the column 34 to be connected to the power source to protect the harness 38. Provided. Reference numeral 38 denotes a front panel of the driving cabin 17.
[0018]
In addition, a power supply holder 40 for storing and holding the mobile phone 39 is fixedly disposed on the front side support 34 on either the left or right side (left side in this embodiment) in the driving cabin 17 so that the incoming call of the telephone 39 during work is received in the driver's seat. 6 can be easily confirmed at the front position.
[0019]
As shown in FIGS. 14 and 15, a step 41 for getting on and off arranged below the entrance 17a of the driving cabin 17 is provided as a slide storage type, and a step having a foot plate 43a fixed to the operating cabin 17 via a bolt 42 is provided. The step 43 includes a main body 43 and a step extension body 46 that is connected to the step main body 43 via a shaft 44 and a guide groove 45 so as to freely advance and retreat, and has a foot plate 46a. The shaft 44 protrudes and guide grooves 45 for engaging and guiding the shaft 44 are formed on both outer surfaces of the extension body 46, and the motor shaft 48 of the speed reduction type electric storage motor 47 fixed on the lower surface of the operation cabin 17. And the extension body 46 and the storage arm 49 are connected to each other via a link 50, and the backlash between the extension body 46 and the operation cabin 17 is prevented. And stretching the damper 51, it is configured so as to extend body 46 in forward and reverse drive to pull the storage position of the projecting or step body 43 side to the step body 43 below the position of use housing motor 47.
[0020]
Further, the driving cabin 17 includes a door lock sensor 52 that detects a door lock of the locking device of the side door 18 and a controller 53 that controls the drive of the storage motor 47, and the door lock sensor 52 is electrically connected to the controller 53. Thus, the extension body 46 is automatically slidable to the lower use position or the upper storage position in conjunction with the opening / closing operation of the side door 18.
[0021]
【The invention's effect】
As is apparent from the above embodiments, the present invention provides a door stopper (25) for adjusting the opening angle (α) of the side door (18) to the hinge device (21) for opening and closing the side door (18) of the operation cabin (17). ), And the hinge device (21) includes a hook-shaped hinge bracket (22) fixed to the outer surface of the column (20), the column (20) and the hinge bracket ( 22) is attached with a door stopper (25) that can be adjusted to move back and forth through a long hole (23) and a stopper bolt (24), and the door stopper (25) is fixed to the hinge bracket (22) so that it can be adjusted to the front and back. A front / rear adjustment screw (26) is provided, and the rear end side of the side door (18) is connected to the open / close fulcrum shaft (28) supported between the upper and lower mounting plates (27) of the hinge bracket (22) so as to be freely opened and closed. A hinge arm (29) to be attached is attached, and an inclined surface (30) to be brought into contact with the rear end portion (29a) of the hinge arm (29) is formed on the front outer side surface of the door stopper (25). By adjusting the movement of the stopper (25), the inclined surface (30) is translated in the front-rear direction, and the gap between the rear end portion (29a) of the hinge arm (29) and the inclined surface (30) is changed, Since the opening angle (α) of the side door (18) can be variably adjusted , the maximum opening angle α of the side door 18 can be easily regulated by using the door stopper 25 when the opening angle α of the side door 18 needs to be adjusted. Thus, it is possible to reliably prevent an accident such as the side door 18 coming into contact with a side obstacle or a mounted part, thereby improving work reliability.
[0022]
Further, since the attachment position of the door stopper 25 is adjustable and the opening angle α of the side door 18 is variably adjusted, the door according to the gap between the side door 18 and the side obstacles and equipment. By adjusting the opening angle α, it is possible to optimize the work.
[Brief description of the drawings]
FIG. 1 is an overall side view of a tractor.
FIG. 2 is an overall plan view of a tractor.
FIG. 3 is an explanatory plan view of the hitch portion.
FIG. 4 is an explanatory side view of the hitch portion.
FIG. 5 is an explanatory diagram of adjustment of the hitch portion.
FIG. 6 is an explanatory plan view of another hitch portion.
FIG. 7 is an explanatory side view of another hitch portion.
FIG. 8 is an adjustment explanatory diagram of another hitch portion.
FIG. 9 is an explanatory diagram of a door stopper in another hitch portion.
FIG. 10 is an explanatory diagram of a door stopper in another hitch portion.
FIG. 11 is an explanatory plan view of another hitch portion.
FIG. 12 is a perspective explanatory view of a sidebar portion.
FIG. 13 is an explanatory plan view of a sidebar portion.
FIG. 14 is an explanatory side view of a boarding / alighting step.
FIG. 15 is an explanatory front view of a boarding / alighting step.
[Explanation of symbols]
17 Driving cabin 18 Side door 21 Hinge device (hinge)
25 Door stopper α opening angle

Claims (1)

A cabin opening and closing device provided with a door stopper (25) for adjusting an opening angle (α) of the side door (18) to a hinge device (21) for opening and closing the side door (18) of the operating cabin (17), The hinge device (21) includes a hook-shaped hinge bracket (22) fixed to the outer surface of the column (20), a long hole (23) and a stopper bolt (on the column (20) and the hinge bracket (22)). 24) and a door stopper (25) fixed to the hinge bracket (22) so that the door stopper (25) can be adjusted in the longitudinal direction. A hinge arm (29) is attached to an open / close fulcrum shaft (28) supported between the upper and lower mounting plates (27) of the bracket (22) so that the rear end side of the side door (18) can be opened and closed. An inclined surface (30) to be brought into contact with the rear end portion (29a) of the hinge arm (29) is formed on the front outer side surface of the door stopper (25), and by adjusting the movement of the door stopper (25), The inclined surface (30) is translated in the front-rear direction, the gap between the rear end (29a) of the hinge arm (29) and the inclined surface (30) is changed, and the opening angle (α) of the side door (18) is changed. ) That can be variably adjusted .

Images