JPH07172171A - Door device of cabin - Google Patents

Abstract

PURPOSE:To provide a door deice of a cabin which can be held as it is opened a little. CONSTITUTION:A door 14 is provided to be opened and closed on the side of a cabin frame and a lock device 19 provided on the door 14 side is connected to a striker 20 provided on the cabin frame side so that the door 14 is held under the closed condition in a door device of the cabin. An auxiliary striker 26 is provided which is connected in the state of the door opened a little to the lock device 19 to freely change the door 14 from the attitude held under the little opened condition to the attitude received in the cabin chamber.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cabin door device mounted on a vehicle such as a tractor.

[0002]

2. Description of the Related Art Some tractors have a cabin mounted on a rear portion of a vehicle body, and doors are provided on both left and right sides of the cabin so as to be openable and closable.

[0003]

By the way, there is a demand to keep the door of the cabin a little opened while working or traveling by the tractor. A lock device for connecting to a striker provided on the frame side is provided to hold the door in a closed state, but there is no one that holds the door in a state where the door is slightly opened.

If a separate holding mechanism is provided to hold the door in a slightly opened state, the cost will increase. Therefore, in view of the above problems, it is an object of the present invention to provide a cabin door device that can be held with the door slightly open.

[0005]

The technical means taken by the present invention to achieve the above object is a cabin frame 5
A door 14 of the cabin is provided so that the door 14 can be freely opened and closed, and a striker 20 provided on the cabin frame 5 side is coupled with a locking device 19 provided on the door 14 side to hold the door 14 in a closed state. In the device, the posture can be freely changed to a holding posture for holding the door 14 in the cabin frame 5 side by coupling with the lock device 19 in a state where the door 14 is slightly opened, and a storage posture for being housed in the cabin. The auxiliary striker 26 is provided.

[0006]

In order to hold the door 14 in a slightly opened state, the auxiliary striker 26 is placed in the holding posture, and the locking device 19 of the door 14 is connected to the auxiliary striker 26.
Further, in order to keep the door 14 in the closed state, the auxiliary striker 26 is placed in the retracted posture and the striker 20 is attached to the door 1.
4 locking device 19 is connected.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. In FIG. 4, reference numeral 1 denotes a vehicle body of a tractor, which is configured by directly connecting an engine 2, a transmission case 3, and the like, and a cabin 4 is mounted at a rear portion thereof. This cabin 4
Has a cabin frame 5 forming a skeleton shown in FIG. 5, and this cabin frame 5 has a front strut 6, a rear strut 7, and an intermediate strut 8 between them on both left and right sides, and these strut members 6, 7 , The upper main frame member 9 having a U-shape in plan view and welded to the upper end portions of the front columns 8 and the upper front frame member 10 for connecting the upper end portions of the front columns 6 to each other.

Rear wheel fenders 11 are provided on both left and right rear lower portions of the cabin frame 5, and a lower frame member 12 having a U-shape in plan view is fixed from the upper surface of the left and right rear wheel fenders 11 to the lower ends of the front surface. , The rear support 7 on the lower frame member 12
Also, the lower end of the intermediate column 8 is welded. A floor sheet 13 made of a steel plate is provided at the bottom.

The left and right front columns 6, the intermediate columns 8 and the front side of the rear fender 11 are provided as entrances and exits, and the left and right entrances are closed by a door 14 so as to be openable and closable. The door 14 includes an outer peripheral door frame 15 conforming to the shape of the entrance / exit opening, an intermediate plate 16 located in the middle of the upper and lower portions and connecting front and rear portions of the door frame 15, and above and below the intermediate plate 16. It is composed of a glass plate 17 and the like fitted in. The rear portion of the door frame 15 is rotatably attached to the intermediate column 8 by a pair of upper and lower hinges 18 so as to be rotatable about the vertical axis, and is connected to the striker 20 provided on the cabin frame 5 side at the inner front end of the intermediate plate 16. Door 1
A locking device 19 is provided for holding 4 in the closed state.

The upper parts of the left and right front columns 6 are inclined upward and backward and inward in the left-right direction, and the lower parts are vertically arranged. The lower parts of the front columns 6 are mounted inside the upper ends of the vertical parts. A member 21 is provided. This mounting member 21 is shown in FIG.
As shown in FIG. 3, a front wall portion 22, a rear wall portion 23,
The front wall portion 22 and the rear wall portion 23 are formed of a side wall portion 24 that connects the inner ends in the left-right direction, and the outer ends in the left-right direction of the front wall portion 22 and the rear wall portion 23 are welded to the front support column 6.

On the rear surface side of the rear wall portion 23 of the mounting member 21,
Mounting base 2 with a striker 20 that is U-shaped in plan view welded and fixed
5 is disposed, and a support plate 27 that supports the auxiliary striker 26 is disposed on the front surface side of the rear wall portion 23. A pair of upper and lower screw holes 28 are formed in the support plate 27, and the mounting base 25 and the rear wall 23 are formed in these screw holes 28.
A screw 29 penetrating from the rear side from the rear side is screwed together, whereby the mounting base 25 and the support plate 27 are mounted on the rear wall portion 23.

Further, the insertion hole 30 of the screw 29 formed in the rear wall portion 23 is a long hole in the left-right direction, and the screw 29
Although the position of the striker 20 can be adjusted by loosening the screw striker 20, the screw 29 is screwed into the screw hole 28 formed in the support plate 27, so that the auxiliary striker 26 is also moved along with the adjustment of the striker 20. The position is adjusted. The position of the striker 20 may be adjusted vertically or diagonally.

The upper portion of the support plate 27 is bent forward, and the bent portion 31 is formed in a curved shape downward, and a lateral groove 32 having an arcuate cross section is formed on the upper surface. A vertical through hole 33 is formed at the center of the groove 32 in the horizontal direction. On the other hand, the auxiliary striker 26 is formed of a bar material, and one end side of the auxiliary striker 26 is bent downward so that
The other end side is also bent at a substantially right angle to form an engaging portion 35. The shaft portion 34 is inserted into the through hole 33 in the upper portion of the support plate 27 so that the auxiliary striker 26 is rotatable about the vertical axis of the shaft portion 34, and the spring receiver 36 is provided on the lower end side of the shaft portion 34. A coil spring 37 is provided between the spring receiver 36 and the bent portion 31 of the support plate 27.
Is interposed in a compressed state, and the auxiliary striker 26 is urged downward.

Therefore, the auxiliary striker 26 is in a position where the auxiliary striker 26 is fitted in the groove 32 in the upper portion of the support plate 27, that is, the auxiliary striker 26 projects from the cabin 4 so that the engaging portion 35 is coupled with the lock device 19 and the door 14 is slightly opened. The holding posture (see the solid line in FIG. 1) and the storing posture (see the phantom line in FIG. 1) that is stored inside the windshield 38 inside the cabin 4 are positioned.

When the door 14 is closed, the auxiliary striker 26 is brought into contact with the rear surface of the front support column 6 in the holding posture so that the auxiliary striker 26 does not move due to the shock of coupling with the lock device 19. Further, when changing the posture of the auxiliary striker 26, the auxiliary striker 26 is moved to the coil spring 3
7 may be pulled upward against the biasing force of 7, but since the base end side upper surface of the bent portion 31 is arcuate and the groove 32 is also arcuate, the auxiliary striker 26 is rotated around the shaft portion 34. When moved, the base of the auxiliary striker 26 separates from the groove 32.

An outside handle 39 is provided at the front portion of the intermediate plate 16 of the door 14, as shown in FIG. The outside handle 39 includes a handle portion 40 on the outer side in the left-right direction, and a pair of front and rear arm portions 41 protruding inward in the left-right direction so as to penetrate the intermediate plate 16 from the inner surface of the handle portion 40. The outer side of the upper portion of each arm 41 in the left-right direction is supported on the intermediate plate 16 side via a pivot 42 so as to be rotatable around the front-rear axis.

As shown in FIGS. 6 and 7, a rod joint 43 is pivotally attached to the front portion of the upper end of the front arm portion 41 so as to be rotatable around the front-rear axis, and the upper end of the rear arm portion 41. A rear end side of the control rod 44 is pivotally attached to the front side portion. An operation rod 45 is connected to the rod joint 43. That is, the male screw portion 4 is provided on the operation rod 45.
6 is formed, the rod joint 43 is, as shown in FIG.
The fixed side 47 pivotally attached to the arm 41 and the fixed side 4
7 and a movable side 48 which is supported so as to be able to be brought into close proximity with each other and is capable of being coupled to each other, and a female screw portion 49 is formed on each of them.
Female thread portion 49 on the fixed side 47 and female thread portion 49 on the movable side
By sandwiching it with
The upper and lower positions are freely adjustable.

An engaging rod 50 formed in an L-shape is fixed to a middle portion of the operating rod 45.
0 is engaged with the front end side of the control rod 44 from above. Also, the front end side of the control rod 44 is
It is interlocked with a release lever that releases the engagement of the latch of the lock device 19 engaged with the striker 20 and the like with the striker 20 and the like. The operation rod 45 is pulled down via the control rod 44 and the control rod 44 is pulled down to release the engagement of the latch with the striker 20 and the like.

In the above construction, one end of the control rod 44 is inserted into the arm portion 41 at the time of assembly, and then the engaging rod 50 of the operating rod 45 is connected to the control rod 4.
4 is engaged with the front end side of the rod 4, and then the upper portion of the operating rod 45 is connected to the rod joint 43, whereby the assembling is facilitated. FIG. 9 shows the shaft 5 protruding from the mission case 3.
1 shows a support structure of No. 1 and a bearing 53 that rotatably supports the shaft 51 on the support tubular portion 52 of the mission case 3.
Is fitted inside, and an oil seal 53 made of an elastic body such as rubber is fitted inside the bearing 53 from the outside. A peripheral groove 56 having a triangular cross section is formed on the inner peripheral surface 55 of the fitting portion of the oil seal 53, and when pressure is applied to the oil seal 53 from the inside of the transmission case 3, the peripheral groove 56 is oiled. The outer peripheral side of the seal 53 bites into the seal 53 so as to prevent it from coming off. It should be noted that this structure can be effectively used for a portion where the hole formed in the outer wall of the mission case 3 is closed with a rubber plug.

The intermediate column 8 of the cabin frame 5 is shown in FIG.
As shown in FIG. 0, the plate is formed to be open inward in the left-right direction from the plate material. It is welded to the front and rear wall portions 57, 58 of the main frame member 9, the lower frame member 12, and the intermediate support column 8. This is shown in FIG.
As shown in, the bending load W is applied to the upper part of the cabin frame 5.
When the intermediate column 8 is added, the intermediate column 8 bends in an S shape as shown by an imaginary line, and a crack occurs in the welded portion of the c portion, and
This is to reinforce the buckling of the d portion, which is caused.

[0021]

According to the present invention, the auxiliary striker 26 provided on the side of the cabin frame 5 is placed in the holding posture, and the lock device 19 of the door 14 is coupled to the auxiliary striker 26, so that the door 14 is slightly opened. Lock device 1 to hold the door 14 closed.
When connecting 9 to the striker 20, the auxiliary striker 26 can be housed in the cabin.

In order to hold the door 14 in a slightly opened state, an auxiliary striker 26 connected to the lock device 19 is provided, so that the lock device 19 and the inside handle for releasing the lock device 19 can be used. It is cheap.

[Brief description of drawings]

FIG. 1 is a plan sectional view of a main part.

FIG. 2 is a sectional view taken along the line aa of FIG.

3 is a cross-sectional view taken along the line bb of FIG.

FIG. 4 is a side view of a tractor with a cabin.

FIG. 5 is a perspective view of a cabin frame.

FIG. 6 is a perspective view of a door lock mechanism.

FIG. 7 is a side view showing a part of the door lock mechanism.

FIG. 8 is a plan view of a rod joint.

FIG. 9 is a cross-sectional view of a shaft support structure.

FIG. 10 is a perspective view showing a reinforcing structure of an intermediate column.

FIG. 11 is a rear view showing the deformation of the intermediate column by the load test.

[Explanation of symbols]

 5 Cabin frame 14 Door 19 Lock device 20 Striker 26 Auxiliary striker

Claims (1)

[Claims] 1. A door (14) is provided on the side of the cabin frame (5) so as to be openable and closable, and a lock device (19) provided on the door (14) side of a striker (20) provided on the cabin frame (5) side. ) To hold the door (14) in a closed state, the lock device (19) is provided on the cabin frame (5) side with the door (14) slightly opened. Combined and door (1
A cabin door device, characterized in that an auxiliary striker (26) whose posture can be freely changed is provided between a holding posture for holding 4) in this state and a holding posture for being accommodated in the cabin.