JP2002081234A - Door lock device of work vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To lock a door in a fully closing position and a half opening position in a work vehicle having the freely opening/closing door. SOLUTION: A bracket 55 is fixed to a front door pillar 53, and an arm 57 is horizontally rotatably pivoted. A half lock striker 58 is fixed to a tip part of the arm 57, and a full lock striker 61 is fixed to the bracket 55. When the arm 57 rotates to one side, a latch 62 of the door 12 engages with the full lock striker 61, and the door 12 is locked on the fully closing position. When the arm 57 rotates to the other side, the arm 57 overlaps with the full lock striker 61, and the latch 62 of the door 12 engages with the half lock striker 58, and the door 12 is locked on the half opening position.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door lock device for a work vehicle, and more particularly to a door lock device for a work vehicle in which a door can be locked at a fully closed position and a half open position.

[0002]

2. Description of the Related Art Agricultural work vehicles such as tractors and combiners and construction work vehicles, etc.
There are many things with doors that can be opened and closed. In these work vehicles, a door lock striker is fixed to the door pillar, and when the door is closed, the latch engages with the door lock striker to lock the door in the fully closed position. However, in this type of work vehicle, the vehicle sometimes travels while taking in the outside air while the door is in a half-open state during work, and it has been desired that the door can be locked in a half-open state.

[0003] Therefore, in a work vehicle provided with a door that can be opened and closed, there arises a technical problem to be solved in order to enable the door to be locked in a fully closed position and a half open position. The purpose is to solve the problem.

[0004]

SUMMARY OF THE INVENTION The present invention has been proposed in order to achieve the above-mentioned object.
In the working vehicle 10 provided with the first striker 61, the first striker 61 for locking the door 12 in the fully closed position is fixed to the door pillar 53, and a horizontally rotatable arm 57 is provided beside the first striker 61. And a door lock device for a working vehicle provided with a second striker 58 for locking the door 12 to the half-open position in the arm 57, and a stopper hole 59 in the arm 57, Arm 57
Is turned to one side, the latch 62 of the door 12 is engaged with the first striker 61, the door 12 is locked in the fully closed position, and the arm 57 is turned to the other side, and the first striker 61 When they overlap, the first striker 61 is inserted into the stopper hole 59 of the arm 57 to regulate the vertical movement of the arm 57, and the latch 62 of the door 57 12
Is provided in a door lock device for a work vehicle in which the door lock device is locked at a half-open position.

[0005]

An embodiment of the present invention will be described below in detail with reference to the drawings. FIGS. 1 and 2 show a tractor 10 as an example of a work vehicle. Reference numeral 11 denotes a cabin. Doors 12 and 12 are provided on the left and right sides of the cabin 11 so as to be openable and closable. FIGS. 3 to 5 show the inside of the cabin 11, and operation components such as a position lever 14, a sub-change lever 15, and a sub-control lever 16 are intensively arranged on the right side of the driver's seat 13. Reference numeral 17 denotes an electro-hydraulic control unit.

[0006] A driver's seat 13 is provided at the lower rear portion of the cabin 11.
A fuel tank 20 is provided at a rear position of
An oil supply port 21 is provided at the rear upper portion of the fuel tank 20, and a breather hose 22 is piped from the upper surface of the fuel tank 20. The breather hose 22 passes through one fender 23 (right side in the present embodiment) from the upper portion of the fuel tank 20 and is connected to a breather pipe 25 arranged in an inverted U shape inside the rear pillar 24. Since the junction between the breather hose 22 and the breather pipe 25 and the drain 26 are provided outside the room, the fuel odor does not enter the room, and the overflowing fuel is discharged from the drain 26 outside the room. In addition, since the breather pipe 25 in the rear pillar 24 is folded back at a sufficient height, there is no risk of fuel leaking even on an inclined land.

An inspection opening 28 is formed in the rear upper panel 27 provided behind the driver's seat 13, and the inspection opening 28 is normally covered with a cap 29. An interior material 30 is adhered to the surface of the rear upper panel 27, and soundproofing and waterproofness can be secured by assembling the cap 29 while compressing the interior material 30. When assembling and maintaining the upper portion of the fuel tank 20, the operation can be performed extremely easily by removing the cap 29, and there is no need to remove the rear upper panel 27 and the like.

The fuel tank 20 is mounted on a tank receiving tray 32 via an insulator 31. Ribs 33, 33 are vertically provided on both left and right sides of the tank receiving tray 32. At the front end of each of the ribs 33, a cutout hole 34 whose bottom is open is provided, and a locking hole 35 is formed at the rear end of the rib 33. When the fuel tank 20 is mounted, the bolts 37 are previously set in the left and right underframes 36 at positions corresponding to the cutout holes 34.
After the fuel tank 20 is placed on the tank receiving tray 32 via the insulator 31, the notch 34 of the rib 33 is inserted into the bolt 37 to lock the tank receiving tray 32. Then, using the bolt 37 as a pivot point, the tank receiving tray 32 is rotated in a horizontal state integrally with the fuel tank 20, and
5 is fixed to the underframe 36 by inserting a bolt 38 therein. Furthermore, after fastening the front and rear bolts 37 and 38,
The rear part of the fuel tank 20 is fixed with a fixing band 39.

In addition, an insulator 41 is interposed between the fixed band 39 and the fuel tank 20, and an insulator 42 is also interposed between the front part of the fuel tank 20 and the rear back panel 41, so that the fuel is provided. Since the front and rear surfaces and the bottom surface of the tank 20 are supported by the cushioning material, even when an impact is applied to the vehicle body during a fall or the like, the fuel tank 20 is prevented from being damaged and safety can be secured. .

FIG. 6 shows a cable connection between the position lever 14 and the sub-control lever 16, and the sub-control levers 16, 16, 16
Are pivoted on the same axis. Then, push-pull cables 18, 1 are connected to the respective sub-control levers 16, 16, 16.
By connecting the sub-controllers 8 and 18 to a sub-control valve (not shown), operating each sub-control lever 16 separately and pushing and pulling the push-pull cable 18, a plurality of sub-control valves can be operated separately. It is formed as follows. A stay 19 is extended forward and downward from the lower surface of the bracket 17, and the position lever 14 is attached to the stay 19.
Is pivoted. As described above, since the position lever 14 is provided on the sub-control lever bracket 17, the position lever 14 and one to three sub-control levers 16 can be arranged in a small space.

Here, the cabin 1 shown in FIGS.
The first door 12 is hinged to the rear pillar 24 at the hinge 50, and when a button 52 provided on the handle 51 is pressed, the door lock on the front door pillar 53 side is released and opened. 7 and 8 show the door lock device on the left side of the cabin 11, in which the left side of the paper is the front side of the cabin 11 and the upper side of the paper is the inside of the cabin 11. The front door pillar 53 includes a support member 54.
The bracket 55 having the support member 5 is fixed.
A support shaft 56 is provided in the up-down direction of 4, and the base end of an arm 57 is pivotally attached to the support shaft 56 to support the arm 57 so as to be horizontally rotatable. As will be described later, a full lock striker 6 serving as a first striker is attached to the bracket 55.
1 and a half lock striker 58 as a second striker is provided at the tip of the arm 57.

The tip of the arm 57 is provided with the arm 57
Is turned toward one side (inward of the cabin 11), the half lock striker 58 is moved toward the front side of the cabin 11.
An elongated stopper hole 59 is formed in the vicinity of the base end of the arm 57 in the longitudinal direction of the arm 57. Further, a stopper 54a extends vertically above and outside the cabin 11 on the support member 54. When the arm 57 rotates to the other side (outside the cabin 11), the stopper 54a Is restricted. The bracket 55 is provided with a curved guide piece 60 and a full lock striker 61 fixed outside the guide piece 60. When the arm 57 rotates to the other side, the arm 57 overlaps the guide piece 60 and the full lock striker 61, and the guide piece 60 and the full lock striker 61 are inserted into the stopper hole 59 and the arm 57
Up and down movement.

On the other hand, on the door 12 side, a latch 62 for engaging with the half lock striker 58 or the full lock striker 61 and a lock mechanism 63 for holding the latch 62 in a locked state are provided. The cover 62 and the lock mechanism 63 are covered with a cover 64.
In addition, the weather strip 6 is provided on the periphery of the door glass 65.
6, which seals the gap between the door glass 65 and the front door pillar 53 when the door 12 is fully closed. Thus, as shown by the solid line in FIG. 7, when the arm 57 is turned to one side, the door 12 is rotated as described later.
Is locked in the fully closed state, and when the arm 57 is rotated to the other side and overlaps with the full lock striker 61 as shown by the two-dot chain line in FIG. You.

FIG. 9 shows a state in which the door 12 is locked in the fully closed position.
The second latch 62 is engaged with the full lock striker 61. Therefore, the weather strip 6 of the door glass 65
6 is pressed against the front door pillar 53, and the door 12 is closed in a sealed state. Even if the operator rotates the arm 57 in this fully closed position, the tip of the arm 57 abuts on the cover 64 of the door 12, so that the door glass 65 is not likely to be damaged. Further, as shown, a lock pin 67 may be inserted into the support shaft 56 to restrict the rotation of the arm 57. When the button 52 provided on the handle 51 is pressed, the lock of the lock mechanism 63 is released.

FIG. 10 shows a state in which the door 12 is locked at the half-open position. When the arm 57 rotates to the other side, the rotation is restricted by the stopper 54a of the supporting member.
The latch 62 of the door 12 is engaged with a half lock striker 58 fixed to the tip of the door 12. As described above, since the arm 57 overlaps the full lock striker 61 and the guide piece 60 and the full lock striker 61 are inserted into the stopper holes 59, the vertical movement of the arm 57 is restricted. Thus, the vertical movement of the door 12 at the half-open position can be prevented, and the supporting strength of the arm 57 at the half-open position can be secured.

The present invention can be variously modified without departing from the spirit of the present invention, and it goes without saying that the present invention extends to the modified ones.

[0017]

According to the present invention, as described in detail in the above embodiment, the first striker is fixed to the door pillar and the second striker is provided to the horizontally rotatable arm. Thus, the first striker and the second striker can be selected and positioned by the rotation of the arm.

According to a second aspect of the present invention, a stopper hole is formed in the arm, and when the arm is rotated to one side, the first hole is formed.
When the door latch is engaged with the striker and the door is locked in the fully closed position, and the arm is turned to the other side, the first striker is inserted into the stopper hole of the arm to restrict the vertical movement of the arm. At the same time, the latch of the door is engaged with the second striker, and the door is locked at the half-open position. Further, it is possible to prevent the door from rattling at the half-open position.

[Brief description of the drawings]

 The figure shows an embodiment of the present invention.

FIG. 1 is a side view of a tractor.

FIG. 2 is a plan view of the tractor.

FIG. 3 is a plan view showing the inside of the cabin.

FIG. 4A is a partially cutaway side view showing the inside of the cabin;
(B) A longitudinal side view of the cap.

FIG. 5 is a front view showing the inside of the cabin.

FIG. 6 (a) is a plan view showing a cable connection state between a position lever and a sub control lever. (B) The side view.

FIG. 7 is a cross-sectional plan view showing the door lock device on the left side of the cabin.

8A is a rear view of the arm in a fully closed position, and FIG.
The rear view of the arm in a half open position.

FIG. 9 is a cross-sectional plan view showing a state where the door is locked at the fully closed position.

FIG. 10 is a cross-sectional plan view showing a state where the door is locked at the half-open position.

[Explanation of symbols]

 Reference Signs List 10 Tractor 12 Door 53 Front door pillar 57 Arm 58 Half lock striker 59 Stopper hole 61 Full lock striker 62 Latch

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Takeshi Hagiyama, 1-Yakura, Hachikura, Tobe-cho, Iyo-gun, Ehime Prefecture, Iseki Agricultural Machinery Co., Ltd. Part F-term (reference) 2E250 AA21 HH06 JJ00 JJ09 LL01 MM03 PP10

Claims (2)

[Claims] 1. A work vehicle 1 having an openable and closable door 12.
At 0, a first striker 61 for locking the door 12 in the fully closed position is fixed to the door pillar 53, and a horizontally rotatable arm 57 is pivotally attached to the side of the first striker 61. And a second striker 58 for locking the door 12 to the half-open position on the arm 57. 2. A stopper hole 59 is formed in the arm 57, and when the arm 57 rotates to one side, a latch 62 of the door 12 is engaged with the first striker 61 so as to engage the door 1.
2 is locked in the fully closed position, and when the arm 57 rotates to the other side and overlaps the first striker 61, the first striker 61 is inserted into the stopper hole 59 of the arm 57 and 2. The movement of the door is locked and the door is locked in the half-open position by engaging the latch of the door with the second striker.
A door lock device for a working vehicle as described in the above.