JP7447332B2 - cabin - Google Patents

Description

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

Conventionally, the cabin mounted on a tractor consists of a pair of left and right front struts located in front of the driver's seat, a pair of left and right rear struts located behind the driver's seat, and the upper ends of the left and right front struts. A front beam material that connects the left and right rear beams, a rear beam material that connects the upper ends of the left and right rear columns, and a left and right side beam material that connects the upper ends of the front and rear columns located on the same side in the left and right direction. The left and right front struts and the left and right rear struts are curved so as to bulge out from the driver's seat toward the outside of the cabin, and the front panel that closes the space between the left and right front struts and the left and right rear struts A rear panel that closes the gap, and a door panel that closes the gap between the front column and the rear column located on the same side in the left-right direction are formed in a curved shape along the curved shape of each column, and are provided on the outer surface side of the cabin frame. (See Patent Document 1).

US Patent No. 6,543,840

In the conventional cabin, the left and right front struts and the left and right rear struts are curved so as to bulge from the driver's seat toward the outside of the cabin, and the front panel, rear panel, and door panel are connected to each of the aforementioned struts. By forming the vehicle in a curved shape along the curved shape of the vehicle, a large space is created around the driver inside the cabin.

However, each panel is placed on the outside of the cabin frame, the front panel is glued to the outside of the left and right front struts and the front beam with a sealant, and the rear panel is glued with a sealant on the outside of the left and right rear struts and the rear beam. Since the door panel contacts the outer surfaces of the front strut, rear strut, and side beam through the sealing material, the outer surfaces of the front beam, rear beam, and side beam should be aligned vertically. Since each panel is curved along each support, the upper edge corner of each panel comes into contact with each beam, and each panel is curved along each support. There is a problem in that it is difficult to bring the upper edges of the panels into good contact.

SUMMARY OF THE INVENTION An object of the present invention is to provide a cabin in which a substantially horizontal front beam can be placed along the curved upper part of a front panel.

SUMMARY OF THE INVENTION An object of the present invention is to provide a cabin in which a front panel is formed into a spherical shape and a substantially horizontal front beam can be placed along the curved upper part of the front panel.

The technical means taken by the present invention to solve the above technical problems are characterized by the following points.

In the invention according to claim 1, a pair of left and right front struts 8 are arranged on the front side of the driver's seat 7, a pair of left and right rear struts 9 are arranged on the rear side of the driver's seat 7, and a pair of left and right front struts 8 are arranged on the front side of the driver's seat 7. A front beam 16 that connects the upper ends of each other, a rear beam 17 that connects the upper ends of the left and right rear columns 9, and a side beam 18 that connects the upper ends of the left and right front columns 8 and rear columns 9. , a rear lower connecting member 19 connecting the lower end sides of the left and right rear columns 9, a front lower connecting member 25 connected to the lower end of each of the left and right front columns 8, and a left and right lower connecting member 25 to the left and right front lower connecting members 25. are connected to the front lower frame body 24, the side frame members 21 extending forward from the lower ends of the left and right rear struts 9 and moving downward, and the front ends of the side frame members 21 and the lower ends of the front struts 8. It is equipped with a cabin frame 6 having a lower side connecting member 23 that connects the
A door panel in which a front panel 13 is provided in an opening surrounded by the left and right front columns 8, the front beam 16, the lower front frame 24, and the left and right front lower connecting members 25, and closes the gap between the rear column 9 and the front column 8. 15 are provided,
The front edges of the left and right front struts 8, the front panel 13, and the door panel 15 are cabins mounted on the vehicle body 3 of the tractor 1, which are formed so as to move forward from the upper and lower ends toward the center in the vertical direction. hand,
The left and right front struts 8 are formed of irregularly shaped pipes having front recesses that open in opposite directions and forward, and horizontal recesses that open left and right outward and rearward, and are directed toward the front of the front recesses of the left and right front struts 8. The forward facing surface faces the side edge of the front panel 13, and the lateral facing surface facing the outside of the horizontal recessed portions of the left and right front struts 8 can face the front edge of the door panel 15.
The front face of the front concave portion faces forward and upward at the upper portions of the left and right front struts 8, and the front surface of the front beam member 16 is inclined to face obliquely upward, and is approximately the same as the top of the front face of the front concave portion. The upper and side edges of the front panel 13 are adhered to both sides of the substantially flush surface.
The front beam member 16 is a square pipe having front and rear surfaces and upper and lower surfaces, and is formed in a curved shape so as to move forward from the left and right ends toward the center in the left and right direction. When the entire body is in a substantially horizontal state over its entire length, its front face faces diagonally upward, while its lower face faces diagonally forward, and the upper edge of the front panel 13 is It is characterized by being formed in a curved shape that is convex toward the front along the front surface of the beam material 16 .

In the invention according to claim 2, a pair of left and right front struts 8 are arranged on the front side of the driver's seat 7, a pair of left and right rear struts 9 are arranged on the rear side of the driver's seat 7, and a pair of left and right front struts 8 are arranged on the front side of the driver's seat 7. A front beam 16 that connects the upper ends of each other, a rear beam 17 that connects the upper ends of the left and right rear columns 9, and a side beam 18 that connects the upper ends of the left and right front columns 8 and rear columns 9. , a rear lower connecting member 19 connecting the lower end sides of the left and right rear columns 9, a front lower connecting member 25 connected to the lower end of each of the left and right front columns 8, and a left and right lower connecting member 25 to the left and right front lower connecting members 25. are connected to the front lower frame body 24, the side frame members 21 extending forward from the lower ends of the left and right rear struts 9 and moving downward, and the front ends of the side frame members 21 and the lower ends of the front struts 8. It is equipped with a cabin frame 6 having a lower side connecting member 23 that connects the
A door panel in which a front panel 13 is provided in an opening surrounded by the left and right front columns 8, the front beam 16, the lower front frame 24, and the left and right front lower connecting members 25, and closes the gap between the rear column 9 and the front column 8. 15 are provided,
The front edges of the left and right front struts 8, the front panel 13, and the door panel 15 are formed so as to transition from the upper and lower ends toward the center in the vertical direction, and the front edges of the left and right front struts 8 and the door panel 15 are formed at the upper and lower ends. A cabin mounted on a vehicle body 3 of a tractor 1, which is formed so as to move outward from the left and right as it goes from the center in the vertical direction,
The left and right front struts 8 are formed of irregularly shaped pipes having front recesses that open in opposite directions and forward, and horizontal recesses that open left and right outward and rearward, and are directed toward the front of the front recesses of the left and right front struts 8. The forward facing surface faces the side edge of the front panel 13, and the lateral facing surface facing the outside of the horizontal recessed portions of the left and right front struts 8 can face the front edge of the door panel 15.
The front face of the front concave portion faces forward and upward at the upper portions of the left and right front struts 8, and the front surface of the front beam member 16 is inclined to face obliquely upward, and is approximately the same as the top of the front face of the front concave portion. The upper and side edges of the front panel 13 are adhered to both sides of the substantially flush surface.
The horizontal surfaces of the horizontal recesses are oriented laterally upward at the upper portions of the left and right front struts 8, and the outer surfaces of the side beams 18 are slanted so as to face obliquely upward, and are approximately parallel to the horizontal surfaces of the horizontal recesses. The upper edge and the front edge of the door panel 15 can face each other on both sides of the substantially flush surface .
The front beam member 16 is a square pipe having front and rear surfaces and upper and lower surfaces, and is formed in a curved shape so as to move forward from the left and right ends toward the center in the left and right direction. When the entire body is in a substantially horizontal state over its entire length, its front face faces diagonally upward, while its lower face faces diagonally forward, and the upper edge of the front panel 13 is It is formed in a curved shape convex toward the front along the front surface of the beam material 16,
The side beam material 18 is a rectangular pipe with a rectangular cross section that is long in the front-rear direction, and is formed into a curved shape such that the center side in the front-rear direction bulges outward in the left-right direction from the front and rear ends, and the outer surface in the left-right direction is The door panel 15 is arranged in an inclined manner so as to face obliquely upward, and the upper edge of the door panel 15 is formed in a curved shape convex outward in the left-right direction so as to follow the outer surface of the side beam material 18. It is characterized by

In the invention according to claim 3, the lateral surfaces of the lateral recesses are oriented laterally upward at the upper portions of the left and right front struts 8, and the outer surfaces of the side beam members 18 are slanted so as to face diagonally upward. It is arranged substantially flush with the horizontal surface of the recessed portion, and is characterized in that the upper edge and the front edge of the door panel 15 can face both sides of this substantially flush surface.

In the invention according to claim 4, the left and right rear struts 9 are formed in a curved shape so that the center side in the vertical direction bulges outward in the left and right direction from the upper and lower ends, and has a rear recessed part that opens in the opposite direction and rearward. It is formed of an irregularly shaped pipe having horizontal recesses that open outward to the left and right and to the front, and the horizontal surfaces facing outward of the horizontal recesses of the left and right rear struts 9 can face the rear edge of the door panel 15. A cabin characterized by:

According to the present invention, the left and right side edges and the upper edge of the front panel can face each other along the front recesses of the left and right front columns and the front surface of the front beam.

According to the present invention, the left and right side edges and the upper edge of the front panel can face the front recesses of the left and right front struts and the front surface of the front beam material, and the front edge and the upper edge of the door panel They can face each other along the horizontal recess of the support and the outer surface of the side beam.

According to the present invention, the front recess and the horizontal recess from the side end are connected by the outer wall and the inner wall to form a robust irregularly shaped pipe.

According to the present invention, it is possible to widen the front view of the cabin.

FIG. 2 is a side view of the tractor. It is a perspective view of a cabin frame and each panel. FIG. 3 is a front view of the cabin frame. It is a front enlarged view of the right side of the cabin frame. FIG. 3 is a side view of the cabin frame. FIG. 3 is a rear view of the cabin frame. It is an enlarged rear view of the left side of the cabin frame. FIG. 3 is a plan view of the cabin frame viewed from a midway point in the vertical direction. FIG. 3 is a plan view of the cabin frame. FIG. 3 is a perspective view of the cabin frame viewed diagonally from the front left. FIG. 3 is a perspective view of the cabin frame as seen diagonally from the rear right side. (a) is a side view of the front beam, (b) is a plan view of the front beam, and (c) is a front view of the front beam. (a) is a front view of the side beam material, (b) is a plan view of the side beam material, and (c) is a side view of the side beam material. (a) is a side view of the rear beam, (b) is a plan view of the rear beam, and (c) is a rear view of the rear beam. (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 the side frame material, (b) is a plan view of the side frame material, and (c) is a front view of the side frame material. It is a perspective view of a side frame material. 6 is a sectional view taken along the line VV in FIG. 5. FIG. 9 is a sectional view taken along the line WW in FIG. 8. FIG. 6 is a sectional view taken along the line XX in FIG. 5. FIG. FIG. 3 is a front perspective view of the rear panel and its surroundings showing the rear panel in a half-opened state. FIG. 3 is a side view of the rear panel showing a half-opened state of the rear panel. (a) is a bottom view of the inner roof, (b) is a sectional view taken along the YY line of (a), and (c) is a sectional view taken along the ZZ line.

Embodiments of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a tractor (driving vehicle) on which a cabin 2 is mounted, and the tractor 1 has a vehicle body 3 that is directly connected to an engine, a clutch housing, and a transmission case. A two-axle, four-wheel type tractor 1 is adopted in which the vehicle body 3 is supported by front wheels 4 and the rear part of a vehicle body 3 is supported by left and right rear wheels 5, and a cabin 2 is mounted on the rear part of the vehicle body 3.

The cabin 2 includes a cabin frame 6 that constitutes a skeleton.

As shown in FIGS. 2 to 23, the cabin frame 6 includes a pair of left and right front struts 8 located in front of the driver's seat 7, and a pair of left and right rear struts 9 located behind the driver's seat 7. In addition, the cabin frame 6 is a four-poster type without an intermediate pillar (center pillar), and the driver's seat 7 is located at the center in the left-right direction on the rear side of the cabin frame 6 (inside the cabin 2) (therefore, the driver's seat 7 is located at the center in the left-right direction on the rear side (inside the cabin 2). The pillar 8 is located diagonally in front of the left of the driver's seat 7, the right front pillar 8 is located diagonally in front of the right of the driver's seat 7, the left rear pillar 9 is located diagonally in the left rear of the driver's seat 7, and the left rear pillar 9 is located diagonally in front of the left of the driver's seat 7. (located diagonally to the right rear of the driver's seat 7).

Note that a steering handle device 10 is provided on the front side of the cabin 2.

At the top of the cabin frame 6, an outer roof 11 and an inner roof 12 (see Fig. 23) that constitute the ceiling inside the cabin 2 are provided. The space between the pillars 9 is closed by a rear panel 14, and the space between the front pillar 8 and the rear pillar 9 on the same side in the left-right direction is closed by a door panel 15.

The front panel 13, the rear panel 14, and the left and right door panels 15 are made of transparent panels made of glass (or resin), and are arranged on the outer surface side of the cabin frame 6.

The upper ends of the left and right front struts 8 are connected to each other by a front beam 16, and the upper ends of the left and right rear struts 9 are connected to each other by a rear beam 17. The upper end sides are connected by side beam members 18.

The left and right ends of the front beam 16 are connected to the inner side in the left and right direction of the upper end of the front support 8, the left and right ends of the rear beam 17 are connected to the inner side in the left and right direction of the upper end of the rear support 9, and the front ends of the side beams 18 are The upper end of the front support 8 is connected to the rear side of the upper end, and the rear end of the front support 9 is connected to the front side of the upper end of the rear support 9.

The lower ends of the left and right rear columns 9 are located at a height corresponding to approximately the vertical center of the front column 8, and the lower ends of the left and right rear columns 9 are connected to each other by a lower rear connecting member 19.

Further, on both the left and right sides of the driver's seat 7, there are extending from the lower ends of the left and right rear struts 9 so as to move downward toward the front, and to bulge out toward the front and upper side (the rear wheel fender 20). A side frame member 21 is provided which is curved (along the shape from the top surface to the front surface).

A rear wheel fender 20 is arranged below each of the left and right side frame members 21 and fixed to the side frame member 21. A floor sheet 22 is arranged between the left and right rear wheel fenders 20, and the front part of the floor sheet 22 is arranged below 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 It is located in

The front lower end of the side frame member 21 is located at the same height as the lower end of the front support 8 located in front of it, and the front lower end of each side frame member 21 and the front support located in front of it are located at the same height. 8 is connected to the lower end by a lower side connecting member 23.

A gate-shaped lower front frame body 24 that supports the dashboard, steering handle device 10, etc. is provided at the lower part between the left and right front columns 8, and the left and right lower ends of this front lower frame body 24 are connected to each other in the left and right direction. The lower ends of the front struts 8 located on the same side are connected by a lower front connecting member 25.

Further, the upper ends of the legs 26 are connected to the lower ends of each of the left and right rear struts 9, and each leg 26 has an inclined shape in which the upper part moves inward in the left-right direction as it goes downward, and the lower part extends downward. It has a straight shape, and a mounting plate 27 is provided on the lower end side to be attached to the vehicle body 3 of the tractor 1 via mounting rubber.

Further, the lower part 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 so that its rear side extends forward, is bent to extend downward in the middle, and is formed so that its front side extends forward.

Further, the front and rearward midpoints of the left and right first reinforcing members 28 are connected by a second reinforcing member 29 made of a square pipe, and the front and rearward midpoints of the left and right first reinforcing members 28, The rear end side of the lower side 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 of the reinforcing members 28, 29, and 30 is provided at the bottom front part of the cabin frame 6. 3 is provided with a mounting plate 32 that is attached via mounting rubber.

The left and right front struts 8 are made of irregularly shaped pipes arranged in the vertical direction and have a gourd-shaped cross section, and when viewed from the front, they extend outward in the left and right direction from the top and bottom ends toward the center in the vertical direction (center in the longitudinal direction). It is formed in a curved manner so as to transition, and is formed in a curved shape so that the approximately central side in the vertical direction bulges outward in the left and right direction.

In addition, when viewed from the side, the left and right front struts 8 are curved so as to transition from the upper and lower ends toward the center in the longitudinal direction toward the front side, and the approximately center side in the longitudinal direction bulges outward in the front-rear direction. It is formed in a curved shape, and the degree of inclination in 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 bulge from the driver's seat 7 toward the exterior of the cabin 2 (diagonally forward).

Further, 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 as it goes from the left and right ends to the center side in the left-right direction (center side in the longitudinal direction). The center side in the left and right direction is formed in a curved shape so that it bulges forward, and the front side is tilted upward so that the center side in the left and right direction is high. ing.

The front panel 13 has an outer shape that follows the edge of an opening surrounded by the left and right front struts 8, the front beam 16, the front lower frame 24, and the left and right front lower connecting members 25. In the present embodiment, is between the upper part 13A located above the front lower frame body 24 and between the upper parts of the left and right front columns 8, and the side part 24a of the front lower frame body 24 and the lower part of the front column 8. It is composed of a pair of left and right lower portions 13B.

In addition, in this embodiment, the upper part 13A and the lower part 13B of the front panel 13 are formed separately, but the upper part 13A and the lower part 13B of the front panel 13 may be formed integrally.

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 16, and is formed in a spherical shape convex toward the front, with the upper edge side facing the front beam 16. The left and right side edges are bonded to the front side of the upper part of the front column 8 via a sealing material.

As mentioned above, the front beam 16 is arranged so that the front surface faces obliquely upward, and the front surface (outer surface) of the front beam 16 has an inclined shape that moves upward toward the interior of the cabin 2. Therefore, even if the front panel 13 is formed in a curved shape that follows the curved shape of the front strut 8, the upper edge side of the front panel 13 can be easily attached to the front beam material 16 by using a sealing material and an adhesive. It can be brought into contact.

Further, the center side in the left-right direction on the lower edge side of the upper part of the front panel 13 is adhered to a mounting portion 33 projecting from the upper part of the front lower frame body 24 via a sealing material.

Further, the lower edge side of the upper portion 13A of the front panel 13 is formed in the center in the left-right direction in a flat shape (plane shape), and a wiper is attached to a portion corresponding to this flat portion 34.

The lower part 13B of the front panel 13 is formed in a curved shape along the lower part of the front column 8, and its outer edge in the left-right direction is adhered to the front side of the lower part of the front column 8 via a sealing material, and the left and right The inner edge in the direction is bonded to the mounting portion 35 protruding from the side of the front lower frame 24 via a sealant, and the lower edge is bonded to the front side of the front lower connecting member 25 via a sealant. The upper edge of the lower part of the front panel 13 is bonded to the lower edge of the front panel 13 via a sealant.

The lower part 13B of the front panel 13 is formed to be curved more gently than the upper part 13A (the lower part of the front panel 13 is less curved (lower) than the upper part.

Thereby, when viewing the front side of the lower part 13B of the front panel 13 (the front wheel 4 and surrounding objects) through the lower part 13B of the front panel 13 from the driver's seat 7, it is configured to be easy to see with less distortion.

The left and right rear struts 9 are made of irregularly shaped pipes arranged in the vertical direction and have a gourd-like cross section, and when viewed from the side, the longitudinal center side is curved so that it bulges rearward and is tilted forward. (The slope in the vertical direction is set so that the lower part is smaller than the upper part, and the lower part of the rear surface of the rear column 9 is located approximately along the vertical direction. ).

Further, when viewed from the rear, the left and right rear struts 9 are formed in a curved shape so that the center side in the longitudinal direction bulges outward in the left and right direction, and is provided so as to be inclined inward in the left and right direction, and the upper end is the lower end. (It is provided so that the degree of inclination in the vertical direction is smaller in the lower part than in the upper part.)

Therefore, the left and right rear struts 9 are formed in a curved shape so as to bulge out from the driver's seat 7 toward the outside of the cabin 2.

Further, a light stay 36 to which a light (work light) is attached is provided on the upper end side of each of the left and right rear columns 9, and as described above, each of the left and right rear columns 9 is tilted inward in the left-right direction. Since the upper end is located laterally inward than the lower end, it is possible to prevent the light attached to the light stay from protruding laterally outward beyond the rear wheel fender 20. It is configured.

Further, as shown in FIG. 9, the distance L1 between the left and right rear struts 9 is smaller than the distance L2 between the left and right front struts 8. It is set up like this.

In addition, as shown in FIG. 13, each of the left and right side beam members 18 is made of square pipes arranged in the front-rear direction, and is curved so that the center side in the front-rear direction (center side in the longitudinal direction) bulges outward in the left-right direction. is formed.

Further, each of the left and right side beam members 18 is provided so as to be inclined inward in the left and right direction so that the rear end is located inward in the left and right direction than the front end, and the outer surface (side surface) in the left and right direction is inclined. The side beam member 18 is arranged so as to be inclined upward, and the side beam member 18 is provided so that the middle part in the left-right direction is high.

The door panel 15 has an outer shape that follows the edge of an opening surrounded by the front support 8, the rear support 9, the side beam 18, the side frame 21, and the lower front connecting member 25, which are on the same side in the left-right direction. has been done.

Further, this door panel 15 is formed in a curved shape along the front support 8 and the side beam material 18, and is formed in a spherical shape that is convex toward the outside in the left and right direction, and the upper edge side is formed in a curved shape along the side beam material 18. The front edge side is brought into contact with the outside surface of the front strut 8 through a sealing material, and the rear edge side is brought into contact with the outside surface of the rear strut 9 through a sealing material. , the lower edge side is in contact with the side frame member 21 and the lower side connecting member 23 via a sealing material.

As described above, the side beam members 18 are arranged so as to be inclined so that their outer surfaces face diagonally upward, and the outer surfaces (outer surfaces) of the side beam members 18 are inclined toward the interior of the cabin 2 as they go upward. Therefore, even if the door panel 15 is formed in a curved shape that follows the curved shapes of the front strut 8 and the rear strut 9, the upper edge side of the door panel 15 can be easily connected to the side beam material 18 through the sealing material. It can be brought into contact with

Further, the rear edge side of the door panel 15 is supported by a pair of upper and lower hinge portions 37 provided on the rear strut 9 so as to be freely openable and closable, so that the door panel 15 opens forward.

A door handle 38 is provided at a midway point in the vertical direction on the front edge side of the door panel 15, and a door handle 38 is provided at a midway point in the vertical direction on the side of the cabin 2 of the door panel 15 so as to extend from the lower hinge portion 37 to the door handle 38. A handle 39 is provided.

The hinge portion includes a fixed portion 37A fixed to the rear strut 9, and a movable portion 37B pivotally connected to the fixed portion 37A so as to be rotatable 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 narrower than the distance L2 between 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, making the appearance of the cabin 2 simple when viewed from the front. This has the effect that there is less risk of it happening.

Further, the rear strut 9 is close to the driver's seat 7, and the strength in the vicinity of the driver's seat 7 can be ensured, and the left-right distance L2 between the left and right front struts 8 is wider than the left-right distance L1 between the rear struts 9, so forward visibility is good.

The side frame member 21 is formed of a square pipe, and as shown in FIGS. 16 and 17, when viewed from the side, the rear side 21a is formed in a substantially straight line so as to extend forward from the lower end of the rear support 9, The portion extending from the front end to the lower front end is curved downward as it goes forward (curved in such a way that it swells diagonally upward in the front).

Note that the lower front end of the side frame member 21 is directed downward, and the curved portion 21b has an arc shape with a radius of curvature larger on the front side than on the rear side.

In addition, in the side frame member 21, when viewed from above, the linear portion 21a on the rear side extends diagonally forward and outward from the lower end of the rear strut 9, and the curved portion 21b extends inward in the left-right direction as it goes forward. It is said to have a curved shape that transitions to (a curved shape that bulges outward).

Further, when viewed from the front, the side frame member 21 has a curved shape in which the curved portion 21b moves inward in the left-right direction as it goes downward (curved so as to bulge outward).

Further, the straight portion 21a of the side frame material 21 is provided so that its outer surface is a surface along the vertical direction, and the curved portion 21b of the side frame material 21 is provided so that the front side of the curved portion 21b is slightly diagonally forward and outward. (The outer surface of the curved portion 21b is inclined slightly outward in the left-right direction as it goes radially outward in most of the outer surface of the curved portion 21b except for the lower front end.)

As described above, the side frame material 21 is formed so that its outer surface follows the spherical shape of the door panel 15 (the inner surface shape of the portion of the edge of the door panel 15 corresponding to the side frame material 21). ), and is configured such that the rear side of the lower edge of the door panel 15 is in good contact with the outer surface of the side frame member 21 via a sealing material.

As shown in FIG. 20, the lower side connecting member 23 is arranged on an upper wall 23a, an outer wall 23b extending downward from an outer end of the upper wall 23a in the left-right direction, and a lower side of the upper wall 23a. A bottom wall 23c is fixed to the outer wall 23b, and a reinforcing wall 23d is provided to connect the upper wall 23a and the bottom wall 23c. The door panel 15 has an inclined shape that moves inward (toward the inside of the cabin 2), and is configured such 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 columns 9 is formed of a square pipe, and is curved so that the center side in the left and right direction (the center side in the longitudinal direction) bulges rearward. It is formed in the shape of

The rear panel 14 has an outer shape that follows the edge of an opening surrounded by the left and right rear columns 9, the rear beam member 17, and the rear lower connecting member 19.

Further, this 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 is convex toward the rear. 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 edges are in contact with the rear surface side of the rear column 9, and the lower edge side is in contact with the rear surface of the rear lower connecting member 19. is attached to.

As mentioned above, the rear beam member 17 is arranged so as to be inclined so that the rear surface faces obliquely upward to the rear, and the rear surface (outer surface) of the rear beam member 17 has an inclined shape that transitions toward the interior of 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 brought into good contact with the rear beam member 17 via the sealing material. Can be done.

Further, the upper edge side of this rear panel 14 is rotatably supported by a pair of right and left hinge portions 40 provided on the rear beam member 17 about an axis in the left and right direction, and the rear panel 14 is pivoted up and down. This allows the opening between the left and right rear struts 9 to be opened and closed.

As shown in FIGS. 21 and 22, a biasing member 48 made of a gas damper (gas spring) that biases the rear panel 14 to the open position (fully open position) is provided across the rear column 9 and the rear panel 14.

Further, the rear panel 14 is engaged with a stopper 41 provided on the left-right center side of the upper surface of the rear lower connecting member 19 on the left-right center side of the cabin 2 interior side of the lower part of the rear panel 14 to hold the rear panel 14 in the closed position. A locking device 42 is provided for locking.

Further, on the rear side of the cabin 2, a locking member 43 that locks the rear panel 14 at an intermediate position between the closed position and the open position is connected to the lower part of the rear panel 14 on the interior side of the cabin 2 and the rear lower connecting member 19. It is provided throughout.

In this embodiment, the locking member 43 is formed by a gas damper (gas spring) that biases 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 distal end side of the piston rod 43a of the gas damper 43 can be freely engaged with and disengaged from an engaging part 46 provided on the left-right center side of the lower inner surface of the rear panel 14. An engaging tool 47 that engages with is provided.

In this embodiment, the engagement part 46 is formed with an insertion hole, and by inserting the engagement tool into the insertion hole from above so as to be freely inserted and removed, the engagement tool 47 is inserted into the engagement part 46. It is said to be detachable.

Furthermore, 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 its extension limit.

Furthermore, the locking member 43 follows the movement of the rear panel 14 between the closed position and the halfway position by having its base connected to the mounting part 44 via a ball joint and by moving the piston rod 43a back and forth. do.

In the structure described above, when the locking device 42 is released when the rear panel 14 is in the closed position, the rear panel 14 opens and is automatically stopped at an intermediate position by the locking member 43, so that the rear panel 14 is slightly opened. It is held in an open, half-open position, allowing ventilation of the two cabins. Therefore, this embodiment is convenient because it does not require an operation to half-open the rear panel 14.

In addition, in this half-open state, when the locking member 43 is swung upward and the engaging tool 47 of the locking member 43 is removed from the insertion hole of the engaging portion 46, the rear panel 14 is opened by the biasing member 48. Rock into position.

In this embodiment, the locking member 43 is formed by a gas damper, but it is not limited to this, and it does not apply force like a gas damper, but may simply expand and contract as the piston rod expands and contracts. Alternatively, it may be composed of a pair of links that are pivotally connected so that the middle part is bent, and can be freely engaged with and detached from the rear panel 14, and can be moved between the closed position and the middle position. It is sufficient if the structure is 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 upward in a portion corresponding to the upper side of the driver's seat 7, and a vertical wall portion 49a on the front side of the concave portion 49 is provided with an inner roof 12 and the outer roof 11 is provided to operate the air conditioner device, and an air outlet 51 for the air conditioner is provided in the vertical wall portion 49a on the rear side of the recess 49. is provided with an operating tool 52 for operating the wind direction.

Further, the front edge side of this inner roof 12 is attached and fixed to the front beam material 16, the rear edge side is attached and fixed to the rear beam material 17, and the left and right side edges are attached and fixed to the side beam materials 18. The roof 12 is formed in a curved shape so as to swell upward as a whole along the mid-height shapes of the front beam 16, the rear beam 17, and the side beams 18.

By forming the inner roof 12 as a whole in a curved shape so as to bulge upward, a head clearance above the driver is ensured. Since the operating tool 50 for operating the air conditioner device and the operating tool 52 for the air outlet 51 facing the driver face the driver, it becomes easier to operate the operating tool 50.

Conversely, by making the front beam 16, the rear beam 17, and the side beam 18 into a medium-height shape, the front beam of the inner roof 12 is formed into a curved shape that bulges upward as a whole. 16, attachment to the rear beam 17 and side beam 18 is facilitated.

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 17 Rear beam 18 Side beam 36 Light stay 37 Hinge L1 Distance between the left and right outer surfaces of the left and right rear struts L2 Distance between the left and right outer surfaces of the left and right front struts

Claims (4)

A pair of left and right front columns (8) placed in front of the driver's seat (7), a pair of left and right rear columns (9) placed in the rear of the driver's seat (7), and a pair of left and right front columns (8) placed in front of the driver's seat (7). ), a rear beam (17) that connects the upper ends of the left and right rear columns (9), and a rear beam (17) that connects the upper ends of the left and right front columns (8) and the rear columns (9). ), a rear lower connecting member (19) that connects the lower ends of the left and right rear columns (9), and a lower end of each of the left and right front columns (8). forward from the lower ends of the connected front lower connecting members (25), the front lower frame (24) whose left and right lower parts are connected to the left and right front lower connecting members (25), and the left and right rear columns (9). A cabin frame (21) having a side frame member (21) that extends and moves downward, and a lower side connecting member (23) that connects the front end of the side frame member (21) and the lower end of the front strut (8). 6).
A front panel (13) is provided in an opening surrounded by the left and right front struts (8), the front beam (16), the front lower frame (24), and the left and right front lower connecting members (25), and the rear strut ( A door panel (15) is provided that closes the space between the front column (9) and the front support (8).
The front edges of the left and right front struts (8), the front panel (13), and the door panel (15) are formed so as to move forward from the upper and lower ends toward the center in the vertical direction. A cabin mounted on the vehicle body (3),
The left and right front struts (8) are formed of irregularly shaped pipes having front recesses that open in opposite directions and forward, and horizontal recesses that open left and right outward and rearward, and the front recesses of the left and right front struts (8) The front facing side faces the side edge of the front panel (13), and the side facing side faces facing the outside of the horizontal recesses of the left and right front struts (8) can face the front edge of the door panel (15). Ori,
The front face of the front recess is oriented forward and upward at the upper part of the left and right front struts (8), and the front face of the front beam (16) is inclined to face obliquely upward. The top edge and side edges of the front panel (13) are adhered to both sides of this substantially flush surface.
The front beam member (16) is a square pipe having front and rear surfaces and upper and lower surfaces, and is formed in a curved shape so as to move forward from the left and right ends toward the center side in the left and right direction. When the whole of the front panel (16) is in a substantially horizontal state over its entire length, its front face faces diagonally upward, while its lower face faces diagonally forward. ) is formed in a curved shape convex toward the front along the front surface of the front beam (16) . A pair of left and right front columns (8) placed in front of the driver's seat (7), a pair of left and right rear columns (9) placed in the rear of the driver's seat (7), and a pair of left and right front columns (8) placed in front of the driver's seat (7). ), a rear beam (17) that connects the upper ends of the left and right rear columns (9), and a rear beam (17) that connects the upper ends of the left and right front columns (8) and the rear columns (9). ), a rear lower connecting member (19) that connects the lower ends of the left and right rear columns (9), and a lower end of each of the left and right front columns (8). forward from the lower ends of the connected front lower connecting members (25), the front lower frame (24) whose left and right lower parts are connected to the left and right front lower connecting members (25), and the left and right rear columns (9). A cabin frame (21) having a side frame member (21) that extends and moves downward, and a lower side connecting member (23) that connects the front end of the side frame member (21) and the lower end of the front strut (8). 6).
A front panel (13) is provided in an opening surrounded by the left and right front struts (8), the front beam (16), the front lower frame (24), and the left and right front lower connecting members (25), and the rear strut ( A door panel (15) is provided that closes the space between the front column (9) and the front support (8).
The front edges of the left and right front struts (8), the front panel (13), and the door panel (15) are formed so as to transition from the upper and lower ends toward the center in the vertical direction, and the front edges of the left and right front struts (8) and the door panel (15) is a cabin mounted on the vehicle body (3) of the tractor (1) that is formed so as to move from the upper and lower ends toward the center in the vertical direction toward the left and right outer sides,
The left and right front struts (8) are formed of irregularly shaped pipes having front recesses that open in opposite directions and forward, and horizontal recesses that open left and right outward and rearward, and the front recesses of the left and right front struts (8) The front facing side faces the side edge of the front panel (13), and the side facing side faces facing the outside of the horizontal recesses of the left and right front struts (8) can face the front edge of the door panel (15). Ori,
The front face of the front recess is oriented forward and upward at the upper part of the left and right front struts (8), and the front face of the front beam (16) is inclined to face obliquely upward. The top edge and side edges of the front panel (13) are adhered to both sides of this substantially flush surface.
The horizontal surfaces of the horizontal recesses are oriented horizontally upward at the upper portions of the left and right front struts (8), and the outer surfaces of the side beams (18) are sloped so as to face obliquely upward, and the horizontal surfaces of the horizontal recesses are oriented horizontally upward at the upper portions of the left and right front struts (8). The upper edge and the front edge of the door panel (15) can face each other on both sides of the door panel (15) .
The front beam member (16) is a square pipe having front and rear surfaces and upper and lower surfaces, and is formed in a curved shape so as to move forward from the left and right ends toward the center side in the left and right direction. When the whole of the front panel (16) is in a substantially horizontal state over its entire length, its front face faces diagonally upward, while its lower face faces diagonally forward. ) is formed in a curved shape convex toward the front along the front surface of the front beam (16),
The side beam material (18) is a rectangular pipe with a rectangular cross section that is long in the front and back direction, and is formed into a curved shape so that the center side in the front and rear direction bulges outward in the left and right direction from the front and rear ends, and The door panel (15) is arranged in an inclined manner so that the side surface faces diagonally upward, and the upper edge of the door panel (15) has a curved shape convex outward in the left-right direction along the outer surface of the side beam material (18). A cabin characterized by being formed in . The left and right front struts (8) have a front recess formed from the front end of the outer wall forming an arc-shaped outer surface, and a horizontal recess formed from the side end, and extend the front recess and the horizontal recess toward the inside of the cabin. The cabin according to claim 1 or 2, characterized in that the cabins are connected by a convex inner wall. The left and right rear struts (9) are formed in a curved shape so that the center side in the vertical direction bulges outward in the left and right direction from the upper and lower ends, and has a rear recessed part that opens in the opposite direction and rearward, and a rear concave part that opens in the opposite direction and rearward, and It is formed of an irregularly shaped pipe having a horizontal recessed portion that opens, and the horizontal surfaces facing outward of the horizontal recessed portions of the left and right rear struts (9) can face the rear edge of the door panel (15). Cabin according to claim 2 , characterized in that:

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