JP2015143103A - cabin - Google Patents

Abstract

PROBLEM TO BE SOLVED: To ensure strength around a driver seat, a front visual field, and an indoor space around a driver.SOLUTION: A cabin comprises a cabin frame 6 that comprises: left and right front posts 8; left and right rear posts 9; a front beam material 16 for connecting upper end sides of the left and right front posts 8; a rear beam material 17; side beam materials 18; a rear lower part connection material 19; a front lower part connection material 25; a front lower part frame body 24; a side frame material 21 which extends forward from the lower end part of each of the left and right rear posts 9, and is shifted downward; and a side lower part connection material 23. A rear panel 14 for blocking between the left and right rear posts 9 and a door panel 15 for blocking between the rear post 9 and the front post 8 are provided, and the left and right side beam materials 18 and the side frame material 21 are arranged so as to spread outward in a left and right direction from the rear end to the front end.

Description

  The present invention relates to a cabin mounted on a traveling vehicle such as a tractor.

  Conventionally, as a cabin mounted on a tractor, a pair of left and right front columns disposed on the front side of the driver's seat, a pair of left and right rear columns disposed on the rear side of the driver's seat, and the upper end sides of the left and right front columns A front beam member that connects the upper end sides of the left and right rear struts, a front beam member that is located on the same side in the left-right direction, and a left and right side beam member that connects the upper end sides of the rear columns. A front panel that forms a curved shape so that the left and right front struts and the left and right rear struts swell outward from the driver's seat toward the outside of the cabin, and the left and right rear struts A rear panel that closes the space and a door panel that closes the space between the front strut and the rear strut located on the same side in the left-right direction are formed in a curved shape along the curved shape of each strut and provided on the outer surface side of the cabin frame. (Patent Literature) Reference).

US Pat. No. 6,543,840

In the conventional cabin, the left and right front struts and the left and right rear struts are formed in a curved shape so as to bulge from the driver's seat toward the outside of the cabin, and the front panel, the rear panel, and the door panel are provided with the respective struts. By forming it in a curved shape along the curved shape, a large space around the driver in the cabin is taken.
However, each panel is arranged on the outer surface side of the cabin frame, the front panel is bonded to the outer surfaces of the left and right front columns and the front beam material via a sealing material, and the rear panel is provided with a sealing material on the outer surfaces of the left and right rear columns and the rear beam material. The door panel is in contact with the outer surfaces of the front strut, rear strut, and side beam material via the seal material, so that the outer surfaces of the front beam material, rear beam material, and side beam material are along the vertical direction. Since each panel is curved along each support column, the corners on the upper edge side of each panel come into contact with each beam material, and each panel is in contact with the outer surface of each beam material. There is a problem that it is difficult to make good contact with the upper edge side of the panel.

  It is an object of the present invention to provide a cabin that secures the strength around the driver's seat and the front view, and secures an indoor space around the driver.

The technical means taken by the present invention to solve the technical problems are characterized by the following points.
In the invention according to claim 1, a pair of left and right front struts 8 disposed on the front side of the driver seat 7, a pair of left and right rear struts 9 disposed on the rear side of the driver seat 7, and the left and right front struts 8 A front beam member 16 connecting the upper end sides, a rear beam member 17 connecting the upper end sides of the left and right rear columns 9, and a side beam member 18 connecting the upper ends of the left and right front columns 8 and the rear column 9. A lower lower connecting member 19 that connects the lower ends of the left and right rear struts 9, a front lower connecting member 25 that is connected to the lower ends of the left and right front struts 8, and a lower portion that is connected to the left and right front lower connecting member 25. The gate-shaped front lower frame 24, the side frame member 21 extending forward from the lower end portions of the left and right rear struts 9 and moving downward, the front end portions of the side frame members 21 and the lower ends of the front struts 8 A cabin provided with a cabin frame 6 having a side lower connecting member 23 for connecting parts,
The left and right rear columns 9 are provided with a rear panel 14 that blocks between the left and right rear columns 9 and a door panel 15 that blocks between the rear column 9 and the front column 8.
The left and right side beam members 18 and the side frame members 21 are arranged so as to spread outward in the left-right direction from the rear end to the front end.

In the invention according to claim 2, the left and right side frame members 21 include a rear side 21 a extending obliquely outward from the lower end of the rear column 9 toward the front, and a side lower connecting member from the front end of the rear side 21 a. And a curved portion 21b formed in a curved shape bulging so as to protrude outward in the left-right direction from the side lower connecting member 23.
In the invention according to claim 3, the cabin frame 6 includes a leg body 26 having an upper end connected to the lower ends of the left and right rear struts 9, and a front lower frame body 24 connection side end of the left and right front lower connection members 25. And a first reinforcing member 28 for connecting the leg body 26,
The left and right first reinforcing members 28 are bent in the middle of the front and rear, the rear part is arranged one step higher than the front part, and the front part is wider than the rear part.

In the invention according to claim 4, the cabin frame 6 includes the second reinforcing member 29 that connects the front portions of the left and right first reinforcing members 28, and the side frame member 21 connecting side end of the left and right lower connecting members 23. And a third reinforcing member 30 that connects the second reinforcing member 29 of the first reinforcing member 28 to the rear side from the connecting position,
The second reinforcing member 29 is characterized in that a midway portion in the longitudinal direction is bent into a medium-high shape.
In the invention which concerns on Claim 5, the floor sheet 22 which attaches the driver's seat 7 is arrange | positioned from the rear part to the front part of the said left and right 1st reinforcement materials 28,
The rear wheel fender 20 is connected to the left and right ends of the floor sheet 22 and fixed to the lower side of the side frame member 21,
Steps 31 are arranged on the front portions of the left and right first reinforcing members 28, the second reinforcing member 29, and the third reinforcing member 30.

The present invention has the following effects.
According to the first aspect of the present invention, the strength around the driver's seat can be secured with flexibility and toughness against the load from the left and right lateral directions, the front view can be secured, and the interior space around the driver Can be secured.
According to the invention which concerns on Claim 2, the toughness which can be more flexible with respect to the load from the left-right lateral direction can be provided.

According to the invention which concerns on Claim 3, the toughness which has more flexibility with respect to the load from the left-right horizontal direction and an up-down direction can be provided in a cabin lower part.
According to the invention which concerns on Claim 4, the toughness which can be more flexible with respect to the load from the left-right lateral direction can be provided in a cabin lower part.
According to the invention which concerns on Claim 5, the intensity | strength of the cabin lower part around a driver's seat is securable.

It is a side view of a tractor. It is a perspective view of a cabin frame and each panel. It is a front view of a cabin frame. It is a front enlarged view of the cabin frame right side. It is a side view of a cabin frame. It is a rear view of a cabin frame. It is a back surface enlarged view of the left side of a cabin frame. It is the top view which looked at the cabin frame from the up-down direction middle part. It is a top view of a cabin frame. It is the perspective view which looked at the cabin frame from diagonally left front. It is the perspective view seen from the cabin frame right diagonally back. (A) is a side view of the front beam material, (b) is a plan view of the front beam material, and (c) is a front view of the front beam material. (A) is a front view of a side beam member, (b) is a plan view of the side beam member, and (c) is a side view of the side beam member. (A) is a side view of the rear beam member, (b) is a plan view of the rear beam member, and (c) is a rear view of the rear beam member. (A) is a side view of the rear lower connecting member, (b) is a plan view of the rear lower connecting member, and (c) is a rear view of the rear lower connecting member. (A) is a side view of a side frame member, (b) is a plan view of the side frame member, and (c) is a front view of the side frame member. It is a perspective view of a side frame material. FIG. 6 is a cross-sectional view taken along line VV in FIG. 5. It is a WW arrow directional cross-sectional view of FIG. FIG. 6 is a cross-sectional view taken along line XX in FIG. 5. It is a front side perspective view around the rear panel showing a half-open state of the rear panel. FIG. 4 is a side view around the rear panel showing a half-open state of the rear panel. (A) is a bottom view of the inner roof, (b) is a cross-sectional view taken along line YY of (a), and (c) is a cross-sectional view taken along line ZZ.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
In FIG. 1, reference numeral 1 denotes a tractor (traveling vehicle) on which a cabin 2 is mounted. The tractor 1 forms a vehicle body 3 by directly connecting an engine, a clutch housing, and a transmission case. A two-shaft, four-wheel tractor 1 is used which is supported by the front wheels 4 and the rear portion of the vehicle body 3 is supported by the left and right rear wheels 5, and the cabin 2 is mounted on the rear portion of the vehicle body 3.

The cabin 2 includes a cabin frame 6 constituting a skeleton.
2 to 23, the cabin frame 6 includes a pair of left and right front columns 8 positioned on the front side of the driver's seat 7 and a pair of left and right rear columns 9 positioned on the rear side of the driver's seat 7. Further, the cabin frame 6 is a four-pillar type cabin frame 6 without an intermediate column (center pillar), and the driver's seat 7 is disposed on the center side in the left-right direction on the rear side (in the cabin 2) of the cabin frame 6 (therefore, the front left The support column 8 is positioned diagonally to the left of the driver's seat 7, the right front support column 8 is positioned diagonally to the right of the driver's seat 7, the left rear support column 9 is positioned diagonally to the left of the driver's seat 7, and the left rear support column 9 is It is located diagonally to the right of the driver's seat 7).

A steering handle device 10 is provided on the front side in the cabin 2.
An upper outer roof 11 and an inner roof 12 (see FIG. 23) that constitutes a ceiling portion in the cabin 2 are provided on the upper part of the cabin frame 6. A space between the columns 9 is closed by a rear panel 14, and a space between the front column 8 and the rear column 9 on the same side in the left-right direction is blocked by a door panel 15.

The front panel 13, the rear panel 14, and the left and right door panels 15 are composed of transparent panels formed of glass (or resin) and are disposed on the outer surface side of the cabin frame 6.
The upper ends of the left and right front struts 8 are connected by a front beam member 16, and the upper end sides of the left and right rear struts 9 are connected by a rear beam member 17, and the front strut 8 and the rear strut 9 on the same side in the left-right direction are connected. The upper end sides are connected by a side beam member 18.

The left and right ends of the front beam member 16 are connected to the inner side in the left and right direction of the upper end of the front column 8, and the left and right ends of the rear beam member 17 are connected to the inner side in the left and right direction of the upper end of the rear column 9. The part is connected to the back side of the upper end of the front column 8, and the rear end is connected to the front side of the upper end of the rear column 9.
The lower ends of the left and right rear struts 9 are at a height position corresponding to the substantially central portion of the front strut 8 in the vertical direction, and the lower end sides of the left and right rear struts 9 are connected by a rear lower connecting member 19.

Further, on both the left and right sides of the driver's seat 7, it extends so as to move downward from the lower end of each of the left and right rear struts 9 and expands toward the front upper side (the rear wheel fender 20 A curved side frame member 21 is provided along the shape of the front surface from the upper surface.
A rear wheel fender 20 is disposed below the left and right side frame members 21 and is fixed to the side frame member 21, and a floor sheet 22 is disposed between the left and right rear wheel fenders 20. Is arranged on the lower side of the driver's seat 7 and the driver's seat 7 is mounted on the floor seat 22, and the rear side of the floor seat 22 extends rearward and upward, and the rear side of the driver's seat 7. Is located.

The front lower end portion of the side frame member 21 is located at the same height as the lower end of the front support column 8 positioned in front of the side frame member 21, and the front lower end portion of each side frame member 21 and the front support column positioned in front thereof. The lower end of 8 is connected by a lower side connecting member 23.
A gate-shaped front lower frame 24 that supports the dashboard, the steering handle device 10 and the like is provided at the lower part between the left and right front columns 8. The lower ends of the front struts 8 located on the same side are connected by a front lower connecting member 25.

The upper ends of the legs 26 are connected to the lower ends of the left and right rear struts 9. Each leg 26 is inclined so that the upper part moves inward in the left-right direction as it goes downward, and the lower part extends downward. A mounting plate 27 that is straight and is attached to the vehicle body 3 of the tractor 1 via a mount rubber on the lower end side.
Further, the lower portion of the leg body 26 on the same side in the left-right direction and the inner end side in the left-right direction of the front lower connecting member 25 are connected by a first reinforcing member 28 made of a square pipe, and this first reinforcing member. 28 is formed such that the rear side extends forward, is bent so as to extend downward in the middle, and is formed so that the front side extends forward.

Further, the front-rear direction midway portions of the front portions of the left and right first reinforcing members 28 are connected to each other by a second reinforcing member 29 made of a square pipe, and the front-rear direction midway portions of the front portions of the left and right first stiffeners 28, The rear end side of the side lower connecting member 23 is connected by a third reinforcing member 30 made of a square pipe.
Further, a step 31 located on the upper surface side of each reinforcing member 28, 29, 30 is provided at the bottom front part of the cabin frame 6, and the vehicle body of the tractor 1 is disposed on the front lower surface side on both the left and right sides of the step 31. 3 is provided with an attachment plate 32 attached via a mount rubber.

The left and right front struts 8 are made of deformed pipes having a bowl-shaped cross section arranged in the vertical direction. When viewed from the front, the left and right front struts 8 extend outward in the left-right direction as going from the upper and lower ends to the central side in the vertical direction (longitudinal direction central side). It is formed so as to be curved, and is formed in a curved shape so that the substantially central side in the vertical direction swells outward in the left-right direction.
Further, when viewed from the side, the left and right front struts 8 are curved so as to move to the front side from the upper and lower end portions toward the longitudinal center side, and the substantially central side in the longitudinal direction swells outward in the longitudinal direction. It is formed in such a manner that the inclination with respect to the vertical direction is smaller on the lower side than on the upper side.

Therefore, the left and right front struts 8 are formed in a curved shape so as to swell from the driver's seat 7 toward the cabin 2 outdoor direction (obliquely forward side).
Also, as shown in FIG. 12, the front beam member 16 is composed of square pipes arranged in the left-right direction, and is curved so as to move forward from the left and right ends toward the left-right direction center side (longitudinal direction center side). It is formed in a curved shape so that the center side in the left-right direction swells forward, and is arranged so that the front surface is inclined so as to face obliquely upward, and the center side in the left-right direction is provided with a high middle-high shape ing.

  The outer shape of the front panel 13 is formed in a shape along the edge of the opening surrounded by the left and right front struts 8, the front beam members 16, the front lower frame 24, and the left and right front lower connecting members 25. In the present embodiment, the upper portion 13A located above the front lower frame 24 and between the upper portions of the left and right front columns 8, and between the side portion 24a of the front lower frame 24 and the lower portion of the front column 8 It is comprised from the left-right paired lower part 13B located.

In the present embodiment, the upper portion 13A and the lower portion 13B of the front panel 13 are formed separately, but the upper portion 13A and the lower portion 13B of the front panel 13 may be integrally formed.
The upper part 13A of the front panel 13 is formed in a curved shape along the upper part of the front column 8 and the front beam member 16, and is formed in a spherical shape that protrudes forward, and the upper edge side is the front beam member 16. The left and right side edge sides are bonded to the front side of the upper portion of the front strut 8 via the sealing material.

As described above, the front beam member 16 is disposed so that the front surface is inclined obliquely upward, and the front beam member 16 is inclined so that the front surface (outer surface) of the front beam member 16 moves toward the cabin 2 as it goes upward. Therefore, even if the front panel 13 is formed in a curved shape that follows the curved shape of the front support column 8, the upper edge side of the front panel 13 with respect to the front beam material 16 is satisfactorily interposed via a sealing material and an adhesive. You can get in contact.

Further, the central side in the left-right direction on the lower edge side of the upper portion of the front panel 13 is bonded to a mounting portion 33 projecting from the upper portion of the front lower frame 24 via a sealing material.
Further, the central side in the left-right direction on the lower edge side of the upper portion 13 </ b> A of the front panel 13 is formed flat (planar), and a wiper is attached to a portion corresponding to the flat portion 34.
The lower portion 13B of the front panel 13 is formed in a curved shape along the lower portion of the front support column 8, and the edge on the left and right direction outer end side is bonded to the front side of the lower portion of the front support column 8 via a sealing material. The edge on the inner side in the direction is bonded to a mounting portion 35 protruding from the side of the front lower frame 24 via a sealing material, and the edge on the lower end side is bonded to the front side of the front lower connecting member 25 via a sealing material. The upper edge side of the lower part of the front panel 13 is bonded to the lower edge side of the front panel 13 via a sealing material.

The lower part 13B of the front panel 13 is formed so as to be gently curved as compared with the upper part 13A (the lower part of the front panel 13 is looser (smaller) than the upper part).
Thus, when the front side (the front wheel 4 and its surroundings) of the lower portion 13B of the front panel 13 is viewed from the driver's seat 7 through the lower portion 13B of the front panel 13, there is little distortion and it is easy to see.

  The left and right rear struts 9 are made of deformed pipes having a bowl-shaped cross section arranged in the vertical direction, and when viewed from the side, are formed in a curved shape so that the center in the longitudinal direction swells rearward, The upper end is located on the front side of the lower end (the inclination with respect to the vertical direction is provided so that the lower part is smaller than the upper part, and the lower rear side of the rear support 9 is substantially in the vertical direction. As provided).

The left and right rear struts 9 are formed in a curved shape so that the center in the longitudinal direction swells outward in the left-right direction when viewed from the rear, and are provided so as to be inclined inward in the left-right direction, with the upper end at the lower end. (Inclination degree with respect to the vertical direction is provided such that the lower part is smaller than the upper part).
Accordingly, the left and right rear struts 9 are formed in a curved shape so as to swell from the driver's seat 7 toward the cabin 2 outside the cabin.

  In addition, light stays 36 to which lights (work lights) are attached are provided on the upper ends of the left and right rear struts 9. As described above, the left and right rear struts 9 are inclined inward in the left-right direction. Since the upper end is located on the inner side in the left-right direction with respect to the lower end, it is possible to prevent the light attached to the light stay from protruding outward in the left-right direction from the rear wheel fender 20. It is configured.

In addition, as shown in FIG. 9, in the left and right rear struts 9, the distance L <b> 1 between the left and right rear struts 9 is narrower than the distance L <b> 2 between the left and right front struts 8. It is provided as follows.
Further, as shown in FIG. 13, the left and right side beam members 18 are formed of square pipes arranged in the front-rear direction, and are curved so that the front-rear direction center side (longitudinal direction center side) swells outward in the left-right direction. Is formed.

The left and right side beam members 18 are provided so as to be inclined inward in the left-right direction so that the rear end is positioned inward in the left-right direction with respect to the front end, and the outer surface (side surface) in the left-right direction is slanted. The side beam members 18 are disposed so as to be directed upward, and the side beam members 18 are provided so that the midway portions in the left-right direction are high.
The door panel 15 is formed in a shape along the edge of the opening surrounded by the front strut 8, the rear strut 9, the side beam member 18, the side frame member 21, and the front lower connecting member 25 on the same side in the left-right direction. Has been.

  The door panel 15 is formed in a curved shape along the front support column 8 and the side beam member 18 and is formed in a spherical shape that protrudes outward in the left-right direction, and the upper edge side is the side beam member 18. The front edge side is contacted to the outer surface of the front support column 8 via the seal material, and the rear edge side is contacted to the outer surface of the rear support column 9 via the seal material. The lower edge side is in contact with the side frame member 21 and the side lower connecting member 23 via a sealant.

As described above, the side beam member 18 is disposed so that the outer surface is inclined obliquely upward, and the side beam member 18 is inclined so that the outer surface (outer surface) of the side beam member 18 moves toward the cabin 2 as it goes upward. Even if the door panel 15 is formed in a curved shape that follows the curved shape of the front support column 8 and the rear support column 9, the upper edge side of the door panel 15 is good with respect to the side beam material 18 through the sealing material. It can be touched.

Further, the door panel 15 is supported at its rear edge side by a pair of upper and lower hinge portions 37 provided on the rear column 9 so as to be opened and closed, and is a front-open door panel 15.
A door handle 38 is provided in the middle in the vertical direction on the front edge side of the door panel 15, and provided in the middle in the vertical direction on the cabin 2 room side of the door panel 15 so as to reach the door handle 38 from the lower hinge portion 37. A handle 39 is provided.

The hinge portion includes a fixed portion 37A fixed to the rear column 9, and a movable portion 37B pivotally connected to the fixed portion 37A so as to be pivotable about an inclined axis that moves forward as it goes upward. The rear edge side of the door panel 15 is attached to the movable part 37B.
As described above, the left and right rear struts 9 are provided such that the distance L1 between the left and right outer surfaces of the left and right rear struts 9 is smaller than the distance L2 between the left and right outer surfaces of the left and right front struts 8. Therefore, when the cabin 2 is viewed from the front, the hinge portion 37 is hidden behind the door panel 15 and the appearance of the cabin 2 in a front view is simplified, and the hinge portion 37 contacts something. There is an effect that there is little fear of doing.

Further, the rear column 9 is close to the driver's seat 7 and can secure the strength in the vicinity of the driver's seat 7, and the left / right distance L2 between the left and right front columns 8 is wider than the left / right distance L1 of the rear column 9, so that the front view is good.
The side frame member 21 is formed of a square pipe. As shown in FIGS. 16 and 17, the side part 21a is formed in a substantially straight shape so as to extend forward from the lower end of the rear column 9 in a side view. The part from the part to the front lower end is a curved shape that moves downward as it goes forward (curved shape so as to swell upward and obliquely upward).

In addition, the front lower end of the side frame member 21 is directed downward, and the curved portion 21b has an arc shape with a larger curvature radius on the front side than on the rear side.
Further, the side frame member 21 has a straight portion 21a on the rear side extending from the lower end of the rear column 9 toward the diagonally outer front side in a plan view, and on the curved portion 21b, inward in the left-right direction as going forward. It is made into the curved shape which shifts to (curved shape so that it may bulge outward).

In addition, the side frame member 21 has a curved shape (curved shape so as to bulge outward) as the curved portion 21b goes downward in the front view.
Further, the straight portion 21a of the side frame member 21 is provided such that the outer side surface thereof is a surface along the vertical direction, and the curved portion 21b of the side frame member 21 is slightly forward obliquely outward from the front side of the curved portion 21b. (The outer surface of the curved portion 21b is slightly inclined outward in the left-right direction as it goes outward in the radial direction in most parts except the front lower end portion).

As described above, the side frame member 21 is formed so that its outer surface conforms to the spherical shape of the door panel 15 (the inner surface shape of the portion corresponding to the side frame member 21 at the edge of the door panel 15). And the rear edge side of the lower edge of the door panel 15 is configured to be in good contact with the outer surface of the side frame member 21 via a sealing material.
As shown in FIG. 20, the side lower connecting member 23 is disposed on the upper wall 23a, the outer wall 23b extending downward from the left and right outer ends of the upper wall 23a, and the lower side of the upper wall 23a. A bottom wall 23c fixed to the outer wall 23b, and a reinforcing wall 23d provided so as to connect the upper wall 23a and the bottom wall 23c. It is inclined so as to move inward in the direction (to the cabin 2 indoor side), and is configured so that the lower edge front side of the door panel 15 is in good contact with the outer surface of the side lower connecting member 23 via a sealing material. ing.

As shown in FIG. 15, the rear lower connecting member 19 that connects the lower ends of the left and right rear struts 9 is formed by a square pipe and curved so that the left and right direction center side (longitudinal direction center side) swells rearward. It is formed in a shape.
The rear panel 14 has an outer shape that follows the edge of the opening surrounded by the left and right rear struts 9, the rear beam members 17, and the rear lower connecting members 19.

Further, the rear panel 14 is formed in a curved shape that follows the curved shapes of the left and right rear columns 9, the rear beam member 17, and the rear lower connecting member 19, and is formed in a spherical shape that protrudes rearward. The upper edge side of the rear panel 14 is in contact with the rear surface of the rear beam member 17 via a sealing material, the left and right side edge sides are in contact with the rear surface side of the rear column 9, and the lower edge side is the rear surface of the rear lower connecting member 19. It has been in contact with.
As described above, the rear beam member 17 is disposed so that the rear surface is inclined obliquely upward, and the rear beam member 17 is inclined so that the rear surface (outer surface) of the rear beam member 17 moves toward the cabin 2 as it goes upward. Therefore, even if the rear panel 14 is formed in a curved shape that follows the curved shape of the rear column 9, the upper edge side of the rear panel 14 can be in good contact with the rear beam member 17 via the sealing material. Can do.

Further, the upper edge side of the rear panel 14 is supported by a pair of left and right hinges 40 provided on the rear beam member 17 so as to be rotatable about a horizontal axis, and swings the rear panel 14 up and down. Thus, the opening between the left and right rear struts 9 can be freely opened and closed.
As shown in FIGS. 21 and 22, an urging member 48 made of a gas damper (gas spring) that urges the rear panel 14 to the open position (fully opened position) is provided across the rear column 9 and the rear panel 14.

Further, on the center side in the left-right direction inside the cabin 2 in the cabin below the rear panel 14, the rear panel 14 is engaged with a stopper 41 provided on the center side in the left-right direction on the upper surface of the rear lower connecting member 19 so that the rear panel 14 is in the closed position. A locking device 42 for locking is provided.
A locking member 43 that locks the rear panel 14 at a midway position between the closed position and the open position is provided on the rear side of the cabin 2, and the lower portion of the rear panel 14 on the cabin 2 room side and the rear lower connecting member 19. It is provided over.

  In this embodiment, the locking member 43 is formed by a gas damper (gas spring) that urges the rear panel 14 in the opening direction, and the base side of the gas damper 43 is fixed to one end of the upper surface of the rear lower connecting member 19. The mounting portion 44 is connected via a ball joint 45, and the front end side of the piston rod 43a of the gas damper 43 can be freely engaged with and disengaged from an engaging portion 46 provided at the center in the left-right direction on the lower inner surface side of the rear panel 14. An engaging tool 47 is provided to engage with.

In this embodiment, the engaging portion 46 is formed with an insertion hole, and the engaging tool 47 is inserted into the insertion portion 46 from above so that the engaging tool 47 can be inserted into and removed from the engaging portion 46. It is said that it can be freely engaged.
The locking member 43 is configured to stop the rear panel 14 at an intermediate position between the closed position and the open position (FIGS. 21 and 22) at the limit of extension.

The locking member 43 follows the movement of the rear panel 14 between the closed position and the midway position by connecting the base portion to the mounting portion 44 via a ball joint and withdrawing and retracting the piston rod 43a. To do.
In the above configuration, when the lock by the locking device 42 is released in the closed position of the rear panel 14, the rear panel 14 opens and automatically stops at the midway position by the locking member 43. It is held in an open half-open state, and ventilation in the cabin 2 is possible. Therefore, this embodiment is convenient because it does not require an operation for opening the rear panel 14 in a half-open state.

Further, in this half-opened state, when the engaging member 43 is swung upward and the engaging tool 47 of the engaging member 43 is removed from the insertion hole of the engaging portion 46, the rear panel 14 is opened by the urging member 48. Swing to position.
In this embodiment, the locking member 43 is formed by a gas damper, but is not limited to this, and is not urged like a gas damper, but simply expands and contracts the piston rod. It may be configured by a pair of links pivotally connected so that the midway portion is bent, and is detachable with respect to the rear panel 14 and between the closed position and the midway position. It is only necessary to be configured to follow the movement of the rear panel 14.

As shown in FIG. 23, the inner roof 12 has a concave portion 49 that is concave toward the upper side of the driver seat 7, and a vertical wall portion 49 a on the front side of the concave portion 49 has an inner roof 12. An operation tool 50 for operating an air conditioner housed and disposed between the outer roof 11 and the outer roof 11.
Is provided, and a blowout port 51 of the air conditioner device is provided in the vertical wall portion 49a on the rear side of the recess 49, and an operation tool 52 for operating the wind direction is provided in the blowout port 51.

In addition, the front edge side of the inner roof 12 is attached and fixed to the front beam member 16, the rear edge side is attached and fixed to the rear beam member 17, and the left and right side edge sides are attached and fixed to the side beam member 18. The roof 12 is formed in a curved shape so as to bulge upward as a whole along the medium-high shape of the front beam member 16, the rear beam member 17, and the side beam member 18.
Thus, by forming the inner roof 12 in a curved shape so as to bulge upward as a whole, the head clearance above the driver is secured, and the inner roof 12 is provided in the vertical wall portion 49a of the recess 49 of the inner roof 12. Since the operating tool 50 for operating the air conditioner and the operating tool 52 of the outlet 51 are directed toward the driver, the operating tool 50 can be easily operated.

  On the contrary, the front beam members 16, the rear beam members 17, and the side beam members 18 have a medium-high shape, so that the front beam member of the inner roof 12 formed in a curved shape so as to bulge upward as a whole. 16, the attachment to the rear beam material 17 and the side beam material 18 becomes easy.

6 Cabin frame 7 Driver's seat 8 Front strut 9 Rear strut 13 Front panel 14 Rear panel 15 Door panel 16 Front beam material 17 Rear beam material 18 Side beam material 36 Light stay 37 Hinge part L1 Spacing between left and right outer surfaces of left and right rear struts L2 Spacing between left and right outer surfaces of left and right front struts

Claims (5)

A pair of left and right front columns (8) disposed on the front side of the driver seat (7);
A pair of left and right rear struts (9) disposed on the rear side of the driver seat (7);
Front beam members (16) for connecting the upper end sides of the left and right front columns (8);
A rear beam member (17) for connecting the upper end sides of the left and right rear columns (9);
Side beam members (18) for connecting the upper ends of the left and right front struts (8) and the rear strut (9);
A rear lower connecting member (19) for connecting the lower ends of the left and right rear struts (9);
A front lower connecting member (25) connected to the lower ends of the left and right front struts (8);
A gate-shaped front lower frame (24) whose lower part is connected to the left and right front lower connecting members (25);
A side frame member (21) that extends forward and moves downward from the lower end of each of the left and right rear struts (9);
A cabin comprising a cabin frame (6) having a side lower connecting member (23) for connecting a front end portion of a side frame member (21) and a lower end portion of a front support post (8),
The left and right rear columns (9) are provided with a rear panel (14) for closing the space between the left and right rear columns (9) and a door panel (15) for blocking the space between the rear column (9) and the front column (8). And
The cabin, wherein the left and right side beam members (18) and the side frame members (21) are arranged to extend outward in the left-right direction from the rear end to the front end.   Each of the left and right side frame members (21) includes a rear side (21a) extending obliquely outward from the lower end of the rear column (9) and a lower side connecting member from the front end of the rear side (21a). It has a curved part (21b) formed in the curved shape which leads to (23) and bulges so that it may protrude in the left-right direction outward side rather than the side lower part connection material (23). cabin. The cabin frame (6) includes a leg (26) having an upper end connected to the lower ends of the left and right rear struts (9), and a front lower frame (24) connecting side of the left and right front lower connecting members (25). A first reinforcement (28) connecting the end and the leg (26);
2. The left and right first reinforcing members (28) are bent in the middle of the front and rear, the rear part is arranged one step higher than the front part, and the front part is wider than the rear part. Or the cabin according to 2. The cabin frame (6) includes a second reinforcing member (29) that connects the front portions of the left and right first reinforcing members (28), and a side frame member (21) of the left and right side lower connecting members (23). A third reinforcing member (30) for connecting the side end portion and the second reinforcing member (29) of the first reinforcing member (28) from the connecting position to the rear side;
The cabin according to claim 3, wherein the second reinforcing member (29) has a middle portion in the longitudinal direction bent into a medium-high shape. A floor seat (22) for mounting the driver's seat (7) from the rear part to the front part of the left and right first reinforcing members (28);
The rear fender (20) is connected to the left and right ends of the floor seat (22) and fixed to the lower side of the side frame member (21),
The step (31) is arrange | positioned on the front part of the said 1st left and right reinforcing material (28), the 2nd reinforcing material (29), and the 3rd reinforcing material (30). Cabin.

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