JP3810264B2 - Entrance door of work cabin driving cabin - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an entrance door for a work vehicle driving cabin, and more particularly to an entrance door provided with a window with a transparent plate.
[0002]
[Prior art]
Conventionally, in the above-described operation cabin, the entrance door is configured by an inner frame and an outer frame each having a window, and a transparent plate that is sandwiched between the two frames and covers the window.
[0003]
[Problems to be solved by the invention]
Conventionally, the entrance / exit doors are heavy and costly. In the driving cabin of a work vehicle such as a combine vehicle, the weight of the entrance door and the ratio of production costs increase, so the weight and production cost of the driving cabin for the entrance door have increased.
An object of the present invention is to provide a passenger door that is relatively light and inexpensive.
[0004]
[Means for Solving the Problems]
The configuration, operation, and effect of the invention according to claim 1 are as follows.
[0005]
[Structure of the Invention of Claim 1]
An entrance door of a driving cabin for a working vehicle according to claim 1 includes: an inner frame formed by forming a plate-like body made of sheet metal into a door shape and forming a window; and an outer frame made of a transparent plate covering the window. Consists of two frames, with a key box part in the middle of the inner frame in the vertical direction, and the outer frame with the same dimensions as the inner frame height and width except for the key box part. The outer frame is formed on the outer surface of the inner frame in a state of being superposed on the outer surface of the inner frame.
[0006]
[Action]
It has a double structure consisting of an inner frame and an outer frame. The inner frame is formed by forming a sheet metal plate-like body into a door shape and forming a window, and the outer frame is the inner frame except for the key box. It is formed in a shape that covers almost the entire outer surface of the inner frame with the same dimensions as the height and width , covers the window in a state of being superimposed on the outer surface of the inner frame, and is supported on the outer surface side of the inner frame. Because it is made of a transparent plate, it can be made to have a window with a transparent plate while reducing the weight and cost compared to the triple structure.
[0007]
〔effect〕
The entrance / exit door is provided with a window with a transparent plate and can be obtained in a light and inexpensive manner, and the entire operation cabin can be configured in an advantageous state in terms of both visibility and weight and cost.
[0008]
The configuration of the invention according to claim 2 is as follows.
[0009]
[Configuration of the Invention of Claim 2 ]
In the configuration of the invention according to claim 1, a reinforcing frame protruding in a substantially U shape is provided on the outer periphery of the inner frame.
[0010]
The structure, operation, and effect of the invention according to claim 3 are as follows.
[0011]
[Structure of the invention of claim 3 ]
3. The structure according to claim 1 , wherein the inner frame is provided with a plurality of windows, the outer frame is supported by the inner frame so as to be swingable, and a part of the windows is opened and closed. And a portion that is bonded to the frame to close off the other windows.
[0012]
[Action]
By opening the swingable part of the outer frame, it is possible to open a part of the windows for ventilation or to look through the outside. Since the part which covers the other window of an outer frame is adhere | attached on the inner frame, door strength higher than the case where the whole outer frame opens and closes is provided.
[0013]
〔effect〕
Although the window can be opened to allow ventilation and the outside can be viewed, the door frame has excellent door strength by bonding the outer frame portion to the inner frame.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
As shown in FIG. 1, the vehicle travels by a pair of left and right crawler traveling devices 1, 1, and is in front of a self-propelled aircraft including a driving unit having a driving cabin 10 and a driving unit having an engine E positioned below the driving seat 2. A threshing device that cuts planted cereals such as rice and wheat, connects the reaping part 3 that conveys the reaped cereals to the rear of the machine, and moves the severed cereals from the reaping part 3 in a threshing manner. 4. The grain tank 5 for storing the threshing grains from the threshing device 4 is provided in the self-propelled machine body to constitute the combine.
[0015]
As shown in FIG. 1, an entrance / exit with a door 11 is provided on the lateral side wall of the driving cabin 10 on the outer side of the machine body. The entrance door 11 is attached to the lateral wall so as to swing and open around an axis 11a in the vertical direction of the machine body located on the front end side of the door 11.
[0016]
As shown in FIG. 2 to FIG. 9, the entrance door 11 is press-molded so as to have a through-hole that forms an upper window 12 and a lower window 13, and hinges 14 are attached at two upper and lower positions on the front end side, An inner frame 16 made of a sheet metal provided with a key box portion 15 at an intermediate portion in the vertical direction on the rear end side, and the same shape and size as the portion of the inner frame 16 excluding the key box portion 15 is provided. And an outer frame 17 made of an acrylic resin transparent plate attached to the outer surface side of the inner frame 16.
[0017]
A lock mechanism that closes and locks the entrance door 11 on the side wall of the operation cabin 10 is provided inside the key box portion 15 of the inner frame 16, and the lock mechanism is released on the outer surface side of the key box portion 15. A door opening / closing handle 15a, which is also used as an operation tool, and a key hole 15b of a lock mechanism are provided.
[0018]
The outer frame 17 is constituted by a pair of outer frame portions 17 a and 17 b that are divided in the vertical direction of the entrance door 11 by a dividing line located between the upper window 12 and the lower window 13.
[0019]
The upper outer frame portion 17a of the pair of outer frame portions 17a and 17b is connected to hinges 18 connected to two front and rear positions on the upper end side of the frame portion 17a and both lateral sides of the frame portion 17a. A gas spring 19 is supported on the outer surface of the inner frame 16 so as to swing up and down around the axis of the hinge 18. As a result, the upper outer frame portion 17a is swung up and down so that the inner surface abuts on the outer surface side of the inner frame 16 and closes to cover the upper window 12, and the outer frame portion 17a is spaced outward from the inner frame 16. Thus, the upper window 12 can be opened and closed to be opened, and when opened, the upper window 12 is naturally raised and swung by the urging force of the gas spring 19 and held in the opened state.
[0020]
The lower outer frame portion 17b of the pair of outer frame portions 17a and 17b is supported by being bonded to a portion covering the entire periphery of the lower window 13 on the outer surface side of the inner frame 16. Accordingly, the lower outer frame portion 17b closes the lower window 13 of the inner frame 16.
[0021]
[Another embodiment]
The present invention can be applied not only to a combine but also to an entrance door of a driving cabin such as a tractor or a construction machine. Therefore, a combine, a tractor, a construction machine, etc. are generically called a work vehicle.
[Brief description of the drawings]
FIG. 1 is a side view of the entire combine. FIG. 2 is a front view of a doorway. FIG. 3 is a sectional view taken along aa in FIG. 2. FIG. 4 is a sectional view taken along bb in FIG. 2 is a sectional view taken along the line cc in FIG. 2. FIG. 6 is a sectional view taken along the line dd in FIG. 2. FIG. 7 is a sectional view taken along the line ee in FIG. Arrow view [Fig. 9] Perspective view of the doorway in an exploded state [Explanation of symbols]
12, 13 Window 16 Inner frame 17 Outer frame 17a Swingable part 17b of outer frame Part bonded to inner frame of outer frame

Claims (3)

Intermediate the sheet metal plate-like body in the vertical direction of the inner frame with obtaining Preparations and inner frame formed by a window with molding the door shape, the two frames of the outer frame made of a transparent plate covering the window The outer frame is formed in a shape that covers substantially the entire outer surface of the inner frame with substantially the same dimensions as the height and width of the inner frame except for the key box portion. A door for a driving cabin for a work vehicle that is supported on the outer surface of the inner frame in a state of being superposed on the outer surface of the inner frame. The entrance door of the operation cabin for work vehicles of Claim 1 which provided the reinforcement frame which protruded in the substantially U shape at the outer periphery of the inner frame. The inner frame is provided with a plurality of windows, and the outer frame is supported by the inner frame so as to be swingable, and a part of the windows is opened and closed, and the other frame is closed by being bonded to the inner frame. The entrance door of the operation cabin for work vehicles of Claim 1 or 2 provided with the part which has these.

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