JP2020001699A

JP2020001699A - cabin

Info

Publication number: JP2020001699A
Application number: JP2019186006A
Authority: JP
Inventors: 範之宮丸; Noriyuki Miyamaru; 章善内島; Akiyoshi Uchijima; 内島　　章善
Original assignee: Kubota Corp
Current assignee: Kubota Corp
Priority date: 2019-10-09
Filing date: 2019-10-09
Publication date: 2020-01-09
Anticipated expiration: 2027-11-07
Also published as: JP2021165124A; JP6874086B2; JP7122431B2

Abstract

To allow a front beam material to follow a shape of an upper part of a front panel in a curved shape to be attached to a cabin.SOLUTION: A cabin frame 6 has right and left front support posts 8, right and left rear support posts 9, a front beam material 16, a rear beam material 17, a side beam material 18, a rear lower connection material 19, a front lower connection material 25, a front lower frame body 24, a side frame body 21, and a side lower connection material 23. A front panel 13 is provided in an opening surrounded by the right and left front support posts, the front beam material, the front lower frame body and the right and left front lower connection materials. The front panel is constituted of an upper part 13A and a pair of right and left lower parts 13B, where an upper part of the front panel is formed in a spherical shape protruding forward, and an upper edge side of the upper part is bonded to a front surface of the front beam material. The front beam material is formed in a curved shape so that the front beam material follows the curved shape of the upper edge of the upper part of the front panel and transfers forward as going from right and left end parts toward a center side in a lateral direction, and the front surface thereof is formed in an inclined shape to point obliquely upward.SELECTED DRAWING: Figure 2

Description

本発明は、トラクタ等の走行車両に搭載されるキャビンに関するものである。 The present invention relates to a cabin mounted on a traveling vehicle such as a tractor.

従来、トラクタに搭載されるキャビンとして、運転席の前方側に配置された左右一対の前支柱と、運転席の後方側に配置された左右一対の後支柱と、左右の前支柱の上端側同士を連結する前梁材と、左右の後支柱の上端側同士を連結する後梁材と、左右方向で同じ側に位置する前支柱と後支柱の上端側同士を連結する左右の側梁材とを有するキャビンフレームを備え、左右の前支柱、及び左右の後支柱を、運転席からキャビン室外方向に向けて膨らむように湾曲状に形成し、左右前支柱間を塞ぐフロントパネルと、左右後支柱間を塞ぐリヤパネルと、左右方向で同じ側に位置する前支柱と後支柱との間を塞ぐドアパネルを、前記各支柱の湾曲形状に沿って湾曲状に形成すると共にキャビンフレームの外面側に設けてなるものがある（特許文献１参照）。 Conventionally, as a cabin mounted on a tractor, a pair of left and right front struts arranged in front of a driver's seat, a pair of left and right rear struts arranged in a rear side of a driver's seat, and upper ends of left and right front struts. A front beam connecting the upper ends of the right and left rear struts, and a left and right side beams connecting the upper ends of the front struts and the rear struts located on the same side in the left-right direction. A front panel for closing the space between the left and right front struts, the left and right front struts and the left and right rear struts being formed in a curved shape so that the left and right front struts and the left and right rear struts bulge from the driver's seat toward the outside of the cabin room A rear panel closing the gap, and a door panel closing the gap 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 of the struts, and provided on the outer surface side of the cabin frame. (Patent Document Reference).

米国特許第６，５４３，８４０号明細書US Patent No. 6,543,840

前記従来のキャビンにあっては、左右の前支柱、及び左右の後支柱を、運転席からキャビン室外方向に向けて膨らむように湾曲状に形成し、フロントパネル、リヤパネル及びドアパネルを、前記各支柱の湾曲形状に沿って湾曲状に形成することにより、キャビン室内の運転者回りの空間を広く採っている。
しかしながら、各パネルはキャビンフレームの外面側に配置され、フロントパネルは左右前支柱及び前梁材の外面にシール材を介して接着され、リヤパネルは左右後支柱及び後梁材の外面にシール材を介して接当し、ドアパネルは前支柱、後支柱及び側梁材の外面にシール材を介して接当するので、前梁材、後梁材及び側梁材の外面が鉛直方向に沿うようになっていると、各パネルが各支柱に沿って湾曲状であることから、各パネルの上縁側の角部が各梁材に接当することとなって、各梁材の外面に対して各パネルの上縁側を良好に接当させるのが困難となるという問題がある。 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 expand from the driver's seat toward the outside of the cabin, and a front panel, a rear panel, and a door panel are formed by the respective struts. In this case, the space around the driver in the cabin is widened.
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 struts and the front beam members via a sealing material, and the rear panel is bonded to the outer surfaces of the left and right rear struts and the rear beam materials. The door panel contacts the outer surface of the front support, the rear support, and the side beam through the sealing material, so that the outer surfaces of the front beam, the rear beam, and the side beam follow the vertical direction. In this case, since each panel is curved along each column, the upper edge of each panel comes into contact with each beam, and the outer surface of each beam is There is a problem that it is difficult to make good contact with the upper edge side of the panel.

本発明は、前梁材をキャビンに装着される湾曲形状のフロントパネルの上部形状に沿わせることができるようにしたキャビンを提供することを目的とする。
本発明は、前梁材、後梁材及び左右の側梁材を、キャビンに装着されるパネルの上部形状に沿わせることができるようにしたキャビンを提供することを目的とする。 SUMMARY OF THE INVENTION It is an object of the present invention to provide a cabin in which a front beam member can be made to follow the upper shape of a curved front panel mounted on the cabin.
An object of the present invention is to provide a cabin in which a front beam, a rear beam, and left and right side beams can be made to conform to an upper shape of a panel mounted on the cabin.

前記技術的課題を解決するために本発明が講じた技術的手段は、以下に示す点を特徴とする。
請求項１に係る発明では、運転席７の前方側に配置された左右一対の前支柱８と、運転席７の後方側に配置された左右一対の後支柱９と、左右の前支柱８の上端側同士を連結する前梁材１６と、左右の後支柱９の上端側同士を連結する後梁材１７と、左右各前支柱８と後支柱９の上端側同士を連結する側梁材１８と、左右の後支柱９の下端側同士を連結する後下部連結材１９と、左右各前支柱８の下端部に連結された前下部連結材２５と、左右前下部連結材２５に左右の下部が連結された前下部枠体２４と、左右各後支柱９の下端部から前方に延出しかつ下方に移行した側枠材２１と、側枠材２１の前端部と前支柱８の下端部とを連結する側下部連結材２３とを有するキャビンフレーム６を備えており、
前記左右の前支柱８、前梁材１６、前下部枠体２４及び左右の前下部連結材２５で囲まれる開口にフロントパネル１３が設けられ、このフロントパネル１３は、前下部枠体２４の上方側で且つ左右の前支柱８の上部間に位置する上部１３Ａと、前下部枠体２４の側部２４ａと前支柱８の下部との間に位置する左右一対の下部１３Ｂとから構成されているトラクタ１の車体３に搭載したキャビンであって、
前記フロントパネル１３の上部１３Ａは、前方に向けて凸となる球面状に形成され、かつ上部１３Ａの上縁側が前梁材１６の前面に接着されており、
前記前梁材１６はフロントパネル１３の上部１３Ａの上縁の湾曲形状に沿うように、左右の端部から左右方向中央側に行くに従って前方に移行するように湾曲状に形成されており、かつ、前梁材１６の前面は斜め上方を向くように傾斜状に形成されていることを特徴とする。 The technical means taken by the present invention to solve the above technical problem has the following features.
In the invention according to claim 1, a pair of left and right front supports 8 disposed on the front side of the driver's seat 7, a pair of left and right rear supports 9 disposed on the rear side of the driver's seat 7, and A front beam member 16 for connecting the upper ends thereof, a rear beam member 17 for connecting the upper ends of the right and left rear posts 9, and a side beam member 18 for connecting the upper ends of the left and right front posts 8 and the rear posts 9. A lower rear connecting member 19 connecting the lower ends of the left and right rear posts 9 to each other; a front lower connecting member 25 connected to the lower ends of the left and right front posts 8; Are connected to the front lower frame 24, the side frame members 21 extending forward from the lower ends of the left and right rear columns 9 and moving downward, the front ends of the side frame members 21 and the lower ends of the front columns 8 are connected to each other. And a cabin frame 6 having a lower side connecting member 23 for connecting
A front panel 13 is provided in an opening surrounded by the left and right front columns 8, the front beams 16, the front lower frame 24, and the left and right front lower connecting members 25. The front panel 13 is located above the front lower frame 24. The upper part 13A is located between the upper parts of the left and right front supports 8 and the pair of left and right lower parts 13B located between the side part 24a of the front lower frame 24 and the lower part of the front supports 8. A cabin mounted on the vehicle body 3 of the tractor 1,
The upper portion 13A of the front panel 13 is formed in a spherical shape protruding forward, and the upper edge side of the upper portion 13A is bonded to the front surface of the front beam member 16,
The front beam member 16 is formed in a curved shape so as to follow the curved shape of the upper edge of the upper part 13A of the front panel 13 and to move forward from the left and right ends toward the center in the left-right direction, and The front surface of the front beam member 16 is formed so as to be inclined so as to face diagonally upward.

請求項２に係る発明では、運転席７の前方側に配置された左右一対の前支柱８と、運転席７の後方側に配置された左右一対の後支柱９と、左右の前支柱８の上端側同士を連結する前梁材１６と、左右の後支柱９の上端側同士を連結する後梁材１７と、左右各前支柱８と後支柱９の上端側同士を連結する側梁材１８と、左右の後支柱９の下端側同士を連結する後下部連結材１９と、左右各前支柱８の下端部に連結された前下部連結材２５と、左右前下部連結材２５に左右の下部が連結された前下部枠体２４と、左右各後支柱９の下端部から前方に延出しかつ下方に移行した側枠材２１と、側枠材２１の前端部と前支柱８の下端部とを連結する側下部連結材２３とを有するキャビンフレーム６を備えており、
前記左右の前支柱８、前梁材１６、前下部枠体２４及び左右の前下部連結材２５で囲まれる開口にフロントパネル１３が設けられ、このフロントパネル１３は、前下部枠体２４の上方側で且つ左右の前支柱８の上部間に位置する上部１３Ａと、前下部枠体２４の側部２４ａと前支柱８の下部との間に位置する左右一対の下部１３Ｂとから構成されており、
前記後梁材１７と後下部連結材１９との間でかつ左右後支柱９間を塞ぐリヤパネル１４が設けられ、後支柱９と前支柱８との間を塞ぐドアパネル１５が設けられているトラクタ１の車体３に搭載したキャビンであって、
前記前梁材１６、後梁材１７及び左右の側梁材１８を、その上下面がキャビン室外方向に向けて上向き傾斜するように傾斜配置して、前梁材１６の前面、後梁材１７の後面及び左右の側梁材１８の外側面を上方に行くに従ってキャビン室内方向に移行する傾斜状としていることを特徴とする。 In the invention according to claim 2, a pair of left and right front struts 8 arranged on the front side of the driver's seat 7, a pair of left and right rear struts 9 arranged on the rear side of the driver's seat 7, and a pair of left and right front struts 8 are provided. A front beam member 16 for connecting the upper ends thereof, a rear beam member 17 for connecting the upper ends of the right and left rear posts 9, and a side beam member 18 for connecting the upper ends of the left and right front posts 8 and the rear posts 9. A lower rear connecting member 19 connecting the lower ends of the left and right rear posts 9 to each other; a front lower connecting member 25 connected to the lower ends of the left and right front posts 8; Are connected to the front lower frame 24, the side frame members 21 extending forward from the lower ends of the left and right rear columns 9 and moving downward, the front ends of the side frame members 21 and the lower ends of the front columns 8 are connected to each other. And a cabin frame 6 having a lower side connecting member 23 for connecting
A front panel 13 is provided in an opening surrounded by the left and right front columns 8, the front beams 16, the front lower frame 24, and the left and right front lower connecting members 25. The front panel 13 is located above the front lower frame 24. The upper part 13A is located between the upper parts of the left and right front supports 8 and the pair of left and right lower parts 13B located between the side part 24a of the front lower frame 24 and the lower part of the front supports 8. ,
A tractor 1 is provided with a rear panel 14 between the rear beam member 17 and the lower rear connecting member 19 and between the left and right rear columns 9 and a door panel 15 between the rear column 9 and the front columns 8. Cabin mounted on the vehicle body 3 of
The front beam member 16, the rear beam member 17 and the left and right side beam members 18 are arranged so as to be inclined upward and downward toward the outside of the cabin, and the front and rear beam members 17 of the front beam member 16 are arranged. The rear surface and the outer side surfaces of the left and right side beam members 18 are inclined so as to shift toward the cabin compartment as going upward.

請求項３に係る発明では、前記フロントパネル１３、リヤパネル１４及びドアパネル１５を、それぞれ運転席７から離れる方向に凸となる球面状に形成してキャビンフレーム６に設け、左右の前支柱８、左右の後支柱９、前梁材１６、後梁材１７及び左右の側梁材１８を、対応するパネル１３，１４，１５の湾曲形状に沿うように、それぞれ運転席７からキャビン室外方向に向けて膨らむように湾曲状に形成していることを特徴とする。 In the invention according to claim 3, the front panel 13, the rear panel 14, and the door panel 15 are each formed in a spherical shape protruding in a direction away from the driver's seat 7 and provided on the cabin frame 6, and the left and right front supports 8, The rear support 9, the front beam 16, the rear beam 17, and the left and right side beams 18 are directed from the driver's seat 7 toward the outside of the cabin compartment along the curved shapes of the corresponding panels 13, 14, 15, respectively. It is characterized by being formed in a curved shape so as to expand.

請求項４に係る発明では、前記前梁材１６、後梁材１７及び左右の側梁材１８を断面四角形状の角パイプによって形成していることを特徴とする。 The invention according to claim 4 is characterized in that the front beam member 16, the rear beam member 17, and the left and right side beam members 18 are formed by square pipes having a square cross section.

本発明によれば、前梁材をキャビンに装着される湾曲形状のフロントパネルの上部形状に沿わせることができる。
本発明によれば、前梁材、後梁材及び左右の側梁材を、キャビンに装着されるパネルの上部形状に沿わせることができる。 ADVANTAGE OF THE INVENTION According to this invention, a front beam material can be made to follow the upper part shape of the curved front panel attached to a cabin.
ADVANTAGE OF THE INVENTION According to this invention, a front beam material, a rear beam material, and right and left side beam materials can be made to follow the upper part shape of the panel mounted in a cabin.

トラクタの側面図である。It is a side view of a tractor. キャビンフレーム及び各パネルの斜視図である。It is a perspective view of a cabin frame and each panel. キャビンフレームの正面図である。It is a front view of a cabin frame. キャビンフレーム右側の正面拡大図である。It is a front enlarged view of the cabin frame right side. キャビンフレームの側面図である。It is a side view of a cabin frame. キャビンフレームの背面図である。It is a rear view of a cabin frame. キャビンフレーム左側の背面拡大図である。It is a rear enlarged view of the left side of a cabin frame. キャビンフレームを上下方向中途部から下側をみた平面図である。It is the top view which looked at the cabin frame from the middle part in the up-down direction from the lower side. キャビンフレームの平面図である。It is a top view of a cabin frame. キャビンフレームを左斜め前方からみた斜視図である。It is the perspective view which looked at the cabin frame from diagonally left front. キャビンフレーム右斜め後方からみた斜視図である。It is the perspective view seen from the cabin frame right diagonal back. （ａ）は前梁材の側面図、（ｂ）は前梁材の平面図、（ｃ）は前梁材の正面図である。(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）は側梁材の正面図、（ｂ）は側梁材の平面図、（ｃ）は側梁材の側面図である。(A) is a front view of a side beam material, (b) is a plan view of a side beam material, and (c) is a side view of the side beam material. （ａ）は後梁材の側面図、（ｂ）は後梁材の平面図、（ｃ）は後梁材の背面図である。(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）は後下部連結材の側面図、（ｂ）は後下部連結材の平面図、（ｃ）は後下部連結材の背面図である。(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）は側枠材の側面図、（ｂ）は側枠材の平面図、（ｃ）は側枠材の正面図である。(A) is a side view of a side frame material, (b) is a plan view of a side frame material, and (c) is a front view of the side frame material. 側枠材の斜視図である。It is a perspective view of a side frame material. 図５のＶ−Ｖ線矢視断面図である。FIG. 6 is a sectional view taken along line VV of FIG. 5. 図８のＷ−Ｗ線矢視断面図である。FIG. 9 is a sectional view taken along line WW of FIG. 8. 図５のＸ−Ｘ線矢視断面図である。FIG. 6 is a sectional view taken along line XX of FIG. 5. リヤパネルの半開き状態を示すリヤパネル回りの正面側斜視図である。It is a front side perspective view of the rear panel circumference which shows the rear panel half open state. リヤパネルの半開き状態を示すリヤパネル回りの側面図である。FIG. 4 is a side view around the rear panel showing the rear panel in a half-open state. （ａ）はインナールーフの底面図、（ｂ）は（ａ）のＹ−Ｙ線矢視断面図、（ｃ）はＺ−Ｚ線矢視断面図である。(A) is a bottom view of the inner roof, (b) is a sectional view taken along the line YY of (a), and (c) is a sectional view taken along the line ZZ of (a).

以下、本発明の実施の形態を図面を参照して説明する。
図１において、１はキャビン２が搭載されたトラクタ（走行車両）であり、該トラクタ１は、エンジン、クラッチハウジング、ミッションケースを直結して車体３を構成し、該車体３の前部を左右の前輪４で支持すると共に、車体３の後部を左右の後輪５で支持してなる２軸４輪型のトラクタ１が採用され、前記車体３の後部にキャビン２が搭載されている。 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 tractor 1 of a two-shaft, four-wheel type, which is supported by the front wheels 4 and the rear part of the vehicle body 3 is supported by left and right rear wheels 5, is equipped with a cabin 2 at the rear part of the vehicle body 3.

前記キャビン２は骨格を構成するキャビンフレーム６を備えている。
このキャビンフレーム６は、図２〜図２３に示すように、運転席７の前方側に位置する左右一対前支柱８と、運転席７の後方側に位置する左右一対の後支柱９とを備えた、中間支柱（センターピラー）のない４柱式のキャビンフレーム６であり、運転席７はキャビンフレーム６の（キャビン２室内の）後部側の左右方向中央側に配置されている（したがって、左前支柱８は運転席７の左斜め前方に位置し、右前支柱８は運転席７の右斜め前方に位置し、左後支柱９は運転席７の左斜め後方に位置し、左後支柱９は運転席７の右斜め後方に位置している）。 The cabin 2 has a cabin frame 6 forming a skeleton.
As shown in FIGS. 2 to 23, the cabin frame 6 includes a pair of left and right front columns 8 located in front of the driver's seat 7 and a pair of left and right rear columns 9 located behind the driver's seat 7. In addition, the cabin frame 6 is a four-post type cabin frame 6 without an intermediate support (center pillar), and the driver's seat 7 is disposed at the center in the left-right direction on the rear side (in the cabin 2 room) of the cabin frame 6 (therefore, the front left side). The strut 8 is positioned diagonally forward left of the driver's seat 7, the right front strut 8 is positioned diagonally forward right of the driver's seat 7, the left rear strut 9 is positioned diagonally left behind the driver's seat 7, and the left rear strut 9 is It is located diagonally right behind the driver's seat 7).

なお、キャビン２室内の前部側には、ステアリングハンドル装置１０が設けられている。
キャビンフレーム６の上部には外部のアウタールーフ１１とキャビン２室内の天井部を構成するインナールーフ１２(図２３参照)が設けられ、左右前支柱８の間はフロントパネル１３で閉塞され、左右後支柱９の間はリヤパネル１４で閉塞され、左右方向で同じ側にある前支柱８と後支柱９との間はドアパネル１５によって閉塞されている。 A steering handle device 10 is provided on the front side in the cabin 2 room.
An outer roof 11 and an inner roof 12 (see FIG. 23) constituting the ceiling of the cabin 2 are provided on the upper portion of the cabin frame 6. The space between the columns 9 is closed by a rear panel 14, and the space between the front column 8 and the rear column 9 on the same side in the left-right direction is closed by a door panel 15.

前記フロントパネル１３、リヤパネル１４、左右のドアパネル１５は、ガラス（又は樹脂）によって形成された透明パネルで構成されていると共に、キャビンフレーム６の外面側に配置されている。
左右前支柱８の上端側同士は前梁材１６によって連結され、左右後支柱９の上端側同士は後梁材１７によって連結され、左右方向で同じ側にある前支柱８と後支柱９との上端側同士は側梁材１８で連結されている。 The front panel 13, the rear panel 14, and the left and right door panels 15 are formed 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 16, and the upper ends of the right and left rear struts 9 are connected by a rear beam 17. The upper ends are connected by side beams 18.

前梁材１６の左右端部は前支柱８上端の左右方向内面側に接続され、後梁材１７の左右端部は後支柱９上端の左右方向内面側に接続され、側梁材１８の前端部は前支柱８の上端背面側に接続され、後端部は後支柱９の上端前面側に接続されている。
前記左右の後支柱９の下端は、前支柱８の上下方向略中央部に対応する高さ位置にあり、該左右後支柱９の下端側同士は後下部連結材１９によって連結されている。 The left and right ends of the front beam 16 are connected to the left and right inner surfaces of the upper end of the front column 8, the left and right ends of the rear beam 17 are connected to the left and right inner surface of the upper end of the rear column 9, and the front ends of the side beams 18. The portion is connected to the upper rear surface of the front support 8, and the rear end is connected to the upper front surface of the rear support 9.
The lower ends of the left and right rear supports 9 are located at a height corresponding to a substantially central portion in the vertical direction of the front support 8, and the lower ends of the left and right rear supports 9 are connected to each other by a rear lower connecting member 19.

また、運転席７の左右両側には、左右の各後支柱９の下端部から前方に行くに従って下方に移行するように延出しており且つ前上方に向けて膨らむように（後輪フェンダ２０の上面から前面の形状に沿って）湾曲した側枠材２１が設けられている。
この左右各側枠材２１の下側に後輪フェンダ２０が配置されて該側枠材２１に固定されており、左右後輪フェンダ２０間にフロアシート２２が配置され、フロアシート２２の前部は運転席７の下方側に配置されていて該フロアシート２２上に運転席７が取り付けられ、フロアシート２２の後部側は、後上方に向けて延出されていて、運転席７の背面側に位置している。 The left and right sides of the driver's seat 7 extend from the lower ends of the left and right rear struts 9 so as to shift downward as going forward, and so as to expand forward and upward (of the rear wheel fender 20). A side frame member 21 that is curved (from the upper surface to the shape of the front surface) is provided.
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. A floor seat 22 is disposed between the left and right rear wheel fenders 20, and a front portion of the floor seat 22. Is disposed below the driver's seat 7, the driver's seat 7 is mounted on the floor seat 22, and the rear side of the floor seat 22 is extended rearward and upward, and the rear side of the driver's seat 7 It is located in.

前記側枠材２１の前下端部は、その前方に位置する前支柱８の下端と同じ高さ位置に位置しており、各側枠材２１の前下端部と、その前方に位置する前支柱８の下端とは側下部連結材２３によって連結されている。
左右前支柱８間の下部には、ダッシュボードやステアリングハンドル装置１０等を支持する門型状の前下部枠体２４が設けられ、この前下部枠体２４の左右各下端部と、左右方向で同じ側に位置する前支柱８の下端部同士は、前下部連結材２５によって連結されている。 The front lower end of the side frame member 21 is located at the same height position as the lower end of the front column 8 located in front of the side frame member 21, and the front lower end of each side frame member 21 and the front column located in front of the side frame member 21. 8 is connected to the lower end by a side lower 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 a lower portion between the left and right front supports 8. The lower ends of the front supports 8 located on the same side are connected by a front lower connecting member 25.

また、左右の各後支柱９の下端には脚体２６の上端側が連結され、各脚体２６は、上部が下方に行くに従って左右方向内方に移行する傾斜状とされ、下部が下方に延びる直線状とされており、下端側に、トラクタ１の車体３にマウントゴムを介して取り付けられる取付板２７が設けられている。
また、左右方向で同じ側にある脚体２６の下部と、前下部連結材２５の左右方向内端側とは、角パイプからなる第１の補強材２８によって連結され、この第１の補強材２８は、後部側が前方に延びるように形成され、中途部で下方に延びるように屈曲され、前部側が前方に延びるように形成されている。 The lower end of each of the left and right rear struts 9 is connected to the upper end of a leg 26, and each leg 26 is inclined so that the upper part moves inward in the left-right direction as the upper part goes downward, and the lower part extends downward. The mounting plate 27 has a straight shape and is provided on the lower end side of the vehicle body 3 of the tractor 1 via a mounting rubber.
Further, the lower part of the leg 26 on the same side in the left-right direction and the left-right inner end side of the front lower connecting member 25 are connected by a first reinforcing member 28 formed of a square pipe. 28 is formed so 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.

また、左右第１補強材２８の前部の前後方向中途部同士は角パイプからなる第２の補強材２９によって連結され、左右各第１の補強材２８の前部の前後方向中途部と、側下部連結材２３の後端側とは角パイプからなる第３の補強材３０によって連結されている。
また、キャビンフレーム６の底部前部には、各補強材２８、２９、３０の上面側に位置するステップ３１が設けられ、このステップ３１の左右両側の前部下面側には、トラクタ１の車体３にマウントゴムを介して取り付けられる取付板３２が設けられている。 Further, the front and rear halfway portions of the front portions of the first left and right reinforcing members 28 are connected by a second reinforcing member 29 formed of a square pipe, and the front and rear halfway portions of the front portions of the left and right first reinforcing members 28, The rear end side of the side lower connecting member 23 is connected by a third reinforcing member 30 formed of a square pipe.
In addition, a step 31 is provided at the front of the bottom of the cabin frame 6 on the upper surface side of each of the reinforcing members 28, 29, 30. 3 is provided with a mounting plate 32 that is mounted via mounting rubber.

左右の前支柱８は、上下方向に配置された断面瓢箪状の異形パイプからなり、前方からみると、上下端部から上下方向中央側（長手方向中央側）に行くに従って左右方向外方側に移行するように湾曲形成されていて、上下方向略中央側が左右方向外方に膨らむように湾曲状に形成されている。
また、左右の前支柱８は、側方からみると、上下端部から長手方向中央側に行くに従って前方側に移行するように湾曲形成されていて、長手方向略中央側が前後方向外方に膨らむように湾曲状に形成されており、且つ、上下方向に対する傾斜度が上部側よりも下部側が小さくなるように設けられている。 The left and right front struts 8 are formed of a gourd-shaped cross-section pipe arranged in the vertical direction, and when viewed from the front, move outward from the upper and lower ends toward the center in the vertical direction (center in the longitudinal direction). It is curved so as to shift, and is formed so as to be curved so that a substantially central side in the vertical direction expands outward in the horizontal direction.
The left and right front struts 8 are formed so as to be curved so as to move forward from the upper and lower ends toward the center in the longitudinal direction when viewed from the side, and the substantially central side in the longitudinal direction expands outward in the front-rear direction. It is provided in such a manner as to be curved, and the degree of inclination with respect to the vertical direction is smaller on the lower side than on the upper side.

したがって、左右の前支柱８は運転席７からキャビン２室外方向（斜め前方側）に向けて膨らむように湾曲状に形成されている。
また、図１２に示すように、前梁材１６は左右方向に配置された角パイプからなり、左右の端部から左右方向中央側（長手方向中央側）に行くに従って前方に移行するように湾曲形成されていて左右方向中央側が前方に膨らむように湾曲状に形成されていると共に、前面が斜め上方を向くように傾けられて配置されていて左右方向中央側が高い中高状となるように設けられている。 Therefore, the left and right front struts 8 are formed in a curved shape so as to expand from the driver's seat 7 toward the outside of the cabin 2 (obliquely forward).
Further, as shown in FIG. 12, the front beam member 16 is formed of a square pipe arranged in the left-right direction, and is curved so as to shift forward from the left and right ends toward the center in the left-right direction (center in the longitudinal direction). It is formed so that the center side in the left-right direction is curved so as to swell forward, and is arranged so that the front surface is inclined so as to face diagonally upward, so that the center side in the left-right direction has a high middle height. ing.

フロントパネル１３は、外形が、左右の前支柱８、前梁材１６、前下部枠体２４、左右の前下部連結材２５で囲まれる開口の縁部に沿う形状に形成され、該フロントパネル１３は、本実施形態では、前下部枠体２４の上方側で且つ左右前支柱８の上部間に位置する上部１３Ａと、前下部枠体２４の側部２４ａと前支柱８の下部との間に位置する左右一対の下部１３Ｂとから構成されている。 The outer shape of the front panel 13 is formed along the edge of the opening surrounded by the left and right front supports 8, the front beams 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 supports 8 and the side portion 24a of the front lower frame 24 and the lower portion of the front supports 8 are provided. And a pair of left and right lower portions 13B.

なお、本実施形態では、フロントパネル１３の上部１３Ａと下部１３Ｂとは別体で形成されているが、フロントパネル１３の上部１３Ａと下部１３Ｂとを一体形成してもよい。
フロントパネル１３の上部１３Ａは、前支柱８の上部及び前梁材１６に沿う湾曲状に形成されていて、前方に向けて凸となる球面状に形成されており、上縁側が前梁材１６の前面にシール材を介して接着され、左右の側縁側が前支柱８上部の前面側にシール材を介して接着されている。 In the present 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 integrally formed.
An upper portion 13A of the front panel 13 is formed in a curved shape along the upper portion of the front support column 8 and the front beam member 16 and is formed in a spherical shape that is convex forward, and the upper edge side is the front beam member 16. And the left and right side edges are bonded to the front side of the upper portion of the front column 8 via a sealing material.

前述したように、前梁材１６は前面が斜め上方を向くように傾けられて配置されていて、前梁材１６の前面（外面）が上方に行くに従ってキャビン２室内方向に移行する傾斜状とされているので、フロントパネル１３が前支柱８の湾曲形状に沿う湾曲状に形成されていても、前梁材１６に対してフロントパネル１３の上縁側をシール材及び接着剤を介して良好に接当させることができる。 As described above, the front beam member 16 is disposed so as to be inclined so that the front surface faces obliquely upward, and the front beam member 16 has an inclined shape in which the front surface (outer surface) of the front beam member 16 moves toward the interior of the cabin 2 as it goes upward. Therefore, even if the front panel 13 is formed in a curved shape along the curved shape of the front support column 8, the upper edge side of the front panel 13 with respect to the front beam member 16 can be satisfactorily interposed via the sealing material and the adhesive. You can make contact.

また、フロントパネル１３の上部の下縁側の左右方向中央側は、前下部枠体２４の上部から張り出す取付部３３にシール材を介して接着されている。
また、フロントパネル１３の上部１３Ａの下縁側の左右方向中央側は平坦状(平面状)に形成されており、この平坦部分３４に対応する部位にワイパが取り付けられる。
フロントパネル１３の下部１３Ｂは前支柱８の下部に沿う湾曲状に形成されており、その左右方向外端側の縁部が前支柱８の下部の前面側にシール材を介して接着され、左右方向内端側の縁部が前下部枠体２４の側部から張り出す取付部３５にシール材を介して接着され、下端側の縁部が前下部連結材２５の前面側にシール材を介して接着され、フロントパネル１３の下部の上縁側はシール材を介してフロントパネル１３の下縁側に接着されている。 In addition, the center in the left-right direction of 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 body 24 via a sealing material.
The center of the lower edge of the upper portion 13A of the front panel 13 in the left-right direction 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 8, and its outer edge in the left-right direction is bonded to the lower front surface of the front support 8 via a sealing material. The edge on the inner side in the direction is adhered to a mounting portion 35 projecting from the side of the front lower frame 24 via a sealing material, and the edge on the lower end is mounted on the front side of the front lower connecting member 25 via a sealing material. The upper edge of the lower part of the front panel 13 is adhered to the lower edge of the front panel 13 via a sealing material.

このフロントパネル１３の下部１３Ｂは上部１３Ａに比べて緩やかに湾曲するように形成されている（フロントパネル１３の下部は、上部に比べて湾曲度が緩い（小さい））。
これによって、運転席７からフロントパネル１３の下部１３Ｂを透して該フロントパネル１３下部１３Ｂの前方側（前輪４やその周囲のもの）をみる時にゆがみが少なく、見やすいように構成されている。 The lower portion 13B of the front panel 13 is formed to be more gently curved than the upper portion 13A (the lower portion of the front panel 13 has a smaller (smaller) curvature than the upper portion).
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, the distortion is small and it is configured to be easy to see.

左右の後支柱９は、上下方向に配置された断面瓢箪状の異形パイプからなり、側方からみると、長手方向中央側が後方側に膨らむように湾曲状に形成されていると共に前傾状とされていて上端が下端よりも前方側に位置している（上下方向に対する傾斜度が、上部よりも下部が小さくなるように設けられていて、後支柱９の後面下部側は上下方向の略沿うように設けられている）。 The left and right rear struts 9 are formed in the shape of a gourd-shaped cross-section pipe arranged in the vertical direction. When viewed from the side, the longitudinally central side is formed in a curved shape so as to bulge rearward and has a forwardly inclined shape. 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 part of the rear surface of the rear support 9 is substantially along the vertical direction) Provided).

また、左右の後支柱９は、後方からみると長手方向中央側が左右方向外方側に膨らむように湾曲状に形成されていると共に左右方向内方側に傾くように設けられていて上端が下端よりも左右方向内方側に位置している（上下方向に対する傾斜度が、上部よりも下部が小さくなるように設けられている）。
したがって、左右の後支柱９は運転席７からキャビン２室外方向に向けて膨らむように湾曲状に形成されている。 The left and right rear struts 9 are formed so as to be curved so that the central side 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. (Inclination with respect to the up-down direction is provided so that the lower part is smaller than the upper part).
Therefore, the left and right rear supports 9 are formed in a curved shape so as to expand from the driver's seat 7 toward the outside of the cabin 2.

また、左右の各後支柱９の上端側には、ライト（作業灯）が取り付けられるライトステー３６が設けられており、前述したように、左右の各後支柱９は左右方向内方側に傾くように設けられていて上端が下端よりも左右方向内方側に位置しているので、ライトステーに取り付けられるライトが後輪フェンダ２０よりも左右方向外方にはみ出すのを防止することができるよう構成されている。 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 supports 9. As described above, each of the left and right rear supports 9 is inclined inward in the left and right direction. And the upper end is located on the inner side in the left-right direction than the lower end, so that the light attached to the light stay can be prevented from protruding outward from the rear wheel fender 20 in the left-right direction. It is configured.

また、左右の各後支柱９は、図９に示すように、該左右の後支柱９の左右方向外面間の間隔Ｌ１が、左右の前支柱８の左右方向外面間の間隔Ｌ２よりも狭くなるように設けられている。
また、左右の各側梁材１８は、図１３に示すように、前後方向に配置された角パイプからなり、前後方向中央側(長手方向中央側)が左右方向外方に膨らむように湾曲状に形成されている。 As shown in FIG. 9, the distance L1 between the left and right rear supports 9 between the left and right rear supports 9 is smaller than the distance L2 between the left and right front supports 8 between the left and right front supports 8. It is provided as follows.
As shown in FIG. 13, each of the left and right side beam members 18 is formed of a square pipe arranged in the front-rear direction, and has a curved shape such that the center side in the front-rear direction (central side in the longitudinal direction) expands outward in the left-right direction. Is formed.

また、左右の各側梁材１８は、後端が前端よりも左右方向内方側に位置するように左右方向内方側に傾くように設けられていると共に左右方向の外面(側面)が斜め上方を向くように傾けられて配置されていて、該側梁材１８は左右方向中途部が高い中高状となるように設けられている。
ドアパネル１５は、外形が、左右方向で同じ側にある、前支柱８と後支柱９と側梁材１８と側枠材２１と前下部連結材２５で囲まれる開口の縁部に沿う形状に形成されている。 Each of the left and right side beam members 18 is provided so as to be inclined inward in the left-right direction so that the rear end is located more inward in the left-right direction than the front end, and the outer surface (side surface) in the left-right direction is inclined. The side beam member 18 is disposed so as to be inclined upward so that the middle part in the left-right direction has a high middle height.
The outer shape of the door panel 15 is formed along the edge of the opening surrounded by the front column 8, the rear column 9, the side beam members 18, the side frame members 21, and the front lower connection member 25 on the same side in the left-right direction. Have been.

また、このドアパネル１５は、前支柱８及び側梁材１８に沿う湾曲状に形成されていて、左右方向外側方に向けて凸となる球面状に形成されており、上縁側が側梁材１８の外側面にシール材を介して接当され、前縁側が前支柱８の外側面にシール材を介して接当され、後縁側は後支柱９の外側面にシール材を介して接当され、下縁側が側枠材２１及び側下部連結材２３にシール材を介して接当されている。 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 outer edge of the front support 8 is in contact with the outer surface of the front support 8 through a seal material, and the rear edge is in contact with the outer surface of the rear support 9 with a seal 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.

前述したように、側梁材１８は外側面が斜め上方を向くように傾けられて配置されていて、側梁材１８の外側面（外面）が上方に行くに従ってキャビン２室内方向に移行する傾斜状とされているので、ドアパネル１５が前支柱８及び後支柱９の湾曲形状に沿う湾曲状に形成されていても、側梁材１８に対してドアパネル１５の上縁側をシール材を介して良好に接当させることができる。 As described above, the side beam member 18 is disposed so as to be inclined so that the outer side faces obliquely upward, and the slope that shifts in the cabin 2 interior direction as the outer side surface (outer surface) of the side beam member 18 goes upward. Therefore, even if the door panel 15 is formed in a curved shape along the curved shape of the front support column 8 and the rear support column 9, the upper edge side of the door panel 15 with respect to the side beam member 18 is good via the sealing material. Can be contacted.

また、このドアパネル１５は、後縁側が後支柱９に設けられた上下一対のヒンジ部３７によって開閉自在に支持されていて、前開きのドアパネル１５とされている。
ドアパネル１５の前縁側の上下方向中途部には、ドアハンドル３８が設けられ、ドアパネル１５のキャビン２室内側の上下方向中途部には、下側のヒンジ部３７からドアハンドル３８に至るように設けられた取っ手３９が設けられている。 The door panel 15 has a rear edge side supported by a pair of upper and lower hinge portions 37 provided on the rear support 9 so that the door panel 15 can be opened and closed freely.
A door handle 38 is provided in a vertical middle portion on the front edge side of the door panel 15, and a door handle 38 is provided in a vertical middle portion on the cabin 2 room side of the door panel 15 so as to extend from the lower hinge portion 37 to the door handle 38. Provided handle 39 is provided.

前記ヒンジ部は、後支柱９に固定された固定部３７Ａと、該固定部３７Ａに、上方に行くに従って前方に移行する傾斜状の軸芯回りに回動自在に枢支連結された可動部３７Ｂとから構成され、可動部３７Ｂにドアパネル１５の後縁側が取り付けられている。
前述したように、左右の各後支柱９は、該左右の後支柱９の左右方向外面間の間隔Ｌ１が、左右の前支柱８の左右方向外面間の間隔Ｌ２よりも狭くなるように設けられていることから、キャビン２を正面から見ると前記ヒンジ部３７がドアパネル１５の後側に隠れ、キャビン２の正面視での外観がシンプルになる、また、ヒンジ部３７が何かのものに接触する惧れが少ないという効果を奏する。 The hinge portion includes a fixed portion 37A fixed to the rear support 9 and a movable portion 37B pivotally connected to the fixed portion 37A so as to be rotatable around an inclined axis that moves forward as going upward. The rear edge side of the door panel 15 is attached to the movable portion 37B.
As described above, the left and right rear supports 9 are provided such that the distance L1 between the left and right rear supports 9 in the left and right direction is smaller than the distance L2 between the left and right front supports 8 in the left and right direction. Therefore, when the cabin 2 is viewed from the front, the hinge portion 37 is hidden behind the door panel 15 to simplify the appearance of the cabin 2 when viewed from the front, and the hinge portion 37 is in contact with something. There is an effect that there is little fear of the occurrence.

また、後支柱９は運転席７に近く運転席７近傍の強度確保が図れ、左右の前支柱８の左右間隔Ｌ２は後支柱９の左右間隔Ｌ１よりも広いので、前方視界がよい。
前記側枠材２１は、角パイプによって形成され、図１６、図１７に示すように、側面視では、後部側２１ａは後支柱９の下端から前方に延びるように略直線状に形成され、中途部から前下端に至る部分は、前方に行くに従って下方に移行する湾曲状（前斜め上方に向けて膨らむように湾曲状）とされている。 Further, the rear support 9 is close to the driver's seat 7 to secure the strength near the driver's seat 7, and the left and right front support 8 has a wider left-right space L2 than the rear support 9's left-right space L1.
The side frame member 21 is formed by a square pipe, and as shown in FIGS. 16 and 17, when viewed from the side, the rear side 21 a is formed in a substantially linear shape so as to extend forward from the lower end of the rear support 9. A portion from the portion to the front lower end has a curved shape (curved so as to expand obliquely upward and forward) as it moves downward as it goes forward.

なお、側枠材２１の前下端は下方に指向しており、湾曲部分２１ｂは、前部側が後部側よりも曲率半径の大きい円弧状とされている。
また、側枠材２１は、平面視では、後部側の直線部分２１ａは後支柱９の下端から前斜め外側方に向けて延出され、湾曲部分２１ｂでは、前方に行くに従って左右方向内方側に移行する湾曲状（外側方に向けて膨らむように湾曲状）とされている。 Note that the front lower end of the side frame member 21 is directed downward, and the curved portion 21b has an arc shape having a larger radius of curvature at the front side than at the rear side.
In the side frame member 21, in a plan view, the rear straight portion 21 a extends obliquely outward and forward from the lower end of the rear support 9, and the curved portion 21 b has a laterally inward side as it goes forward. (Curved so as to bulge outward).

また、側枠材２１は、正面視では、湾曲部分２１ｂが下方に行くに従って左右方向内方に移行する湾曲状（外側方に向けて膨らむように湾曲状）とされている。
また、側枠材２１の直線部分２１ａは、その外側面が鉛直方向に沿う面となるように設けられ、側枠材２１の湾曲部分２１ｂは、該湾曲部分２１ｂの前面側が若干前斜め外側方を向くように傾けられている（湾曲部分２１ｂの外側面が、前下端部を除く大部分において、径方向外方に行くに従って左右方向外側方に若干傾斜している）。 Further, the side frame member 21 has a curved shape (curved so as to bulge outward) as the curved portion 21b moves inward in the left-right direction as the curved portion 21b moves downward.
Further, the straight portion 21a of the side frame member 21 is provided such that the outer surface thereof is a surface along the vertical direction, and the curved portion 21b of the side frame member 21 is slightly obliquely outward on 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 radially outward in most parts except the front lower end).

以上のようにして、側枠材２１は、（その外側面が）ドアパネル１５の球面形状に沿うように形成されていて（ドアパネル１５の縁部の該側枠材２１に対応する部分の内面形状に沿うように形成されていて）、ドアパネル１５の下縁後部側が側枠材２１の外側面にシール材を介して良好に接当するように構成されている。
側下部連結材２３は、図２０に示すように、上壁２３ａと、該上壁２３ａの左右方向外端から下方側に延出された外側壁２３ｂと、上壁２３ａの下方側に配置されて外側壁２３ｂに固着された底壁２３ｃと、上壁２３ａと底壁２３ｃを連結するように設けられた補強壁２３ｄとを有し、外側壁２３ｂ（の外面）が、下方に行くに従って左右方向内方に（キャビン２室内側に）移行する傾斜状とされていて、ドアパネル１５の下縁前部側が側下部連結材２３の外側面にシール材を介して良好に接当するよう構成されている。 As described above, the side frame member 21 is formed so that the outer surface thereof conforms to the spherical shape of the door panel 15 (the inner surface shape of a portion corresponding to the side frame member 21 at the edge of the door panel 15). , And the rear edge of the lower edge of the door panel 15 is configured to come into 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 members 23 are disposed below 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 (toward the cabin 2 room side), and is configured such that the lower edge front side of the door panel 15 is in good contact with the outer side surface of the lower side connecting member 23 via a sealing material. ing.

左右の後支柱９の下端同士を連結する後下部連結材１９は、図１５に示すように、角パイプによって形成され、左右方向中央側（長手方向中央側）が後方に向けて膨らむように湾曲状に形成されている。
リヤパネル１４は、外形が、左右の後支柱９、後梁材１７、後下部連結材１９で囲まれる開口の縁部に沿う形状に形成されている。 As shown in FIG. 15, the lower rear connecting member 19 connecting the lower ends of the left and right rear supports 9 is formed by a square pipe, and is curved so that the center side in the left-right direction (central side in the longitudinal direction) expands rearward. It is formed in a shape.
The outer shape of the rear panel 14 is formed along 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.

また、このリヤパネル１４は、左右後支柱９、後梁材１７及び後下部連結材１９の湾曲形状に沿う湾曲状に形成されていて、後方に向けて凸となる球面状に形成されており、該リヤパネル１４の上縁側は、後梁材１７の後面にシール材を介して接当され、左右の側縁側は後支柱９の後面側に接当され、下縁側は後下部連結材１９の後面に接当されている。
前述したように、後梁材１７は後面が後斜め上方を向くように傾けられて配置されていて、後梁材１７の後面（外面）が上方に行くに従ってキャビン２室内方向に移行する傾斜状とされているので、リヤパネル１４が後支柱９の湾曲形状に沿う湾曲状に形成されていても、後梁材１７に対してリヤパネル１４の上縁側をシール材を介して良好に接当させることができる。 The rear panel 14 is formed in a curved shape along the curved shapes of the left and right rear struts 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 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 of the rear column 9, and the lower edge is the rear surface of the rear lower connecting member 19. Has been contacted.
As described above, the rear beam member 17 is disposed so as to be inclined such that the rear surface faces obliquely rearward and upward, and the rear surface (outer surface) of the rear beam member 17 is inclined toward the interior of the cabin 2 as the rear surface goes upward. Therefore, even if the rear panel 14 is formed in a curved shape along the curved shape of the rear support 9, the upper edge side of the rear panel 14 can be satisfactorily brought into contact with the rear beam member 17 via the sealing material. Can be.

また、このリヤパネル１４の上縁側は、後梁材１７に設けられた左右一対のヒンジ部４０に左右方向の軸芯回りに回動自在に支持されていて、該リヤパネル１４を上下に揺動することにより左右後支柱９間の開口を開閉自在としている。
図２１及び図２２に示すように、リヤパネル１４を開放位置（全開位置）に付勢するガスダンパ(ガススプリング)からなる付勢部材４８が後支柱９とリヤパネル１４とにわたって設けられている。 The upper edge side of the rear panel 14 is supported by a pair of left and right hinge portions 40 provided on the rear beam member 17 so as to be rotatable around a left-right axis, and swings the rear panel 14 up and down. Thus, the opening between the left and right rear supports 9 can be freely opened and closed.
As shown in FIGS. 21 and 22, an urging member 48 composed of a gas damper (gas spring) for urging the rear panel 14 to the open position (fully open position) is provided over the rear support 9 and the rear panel 14.

また、リヤパネル１４の下部のキャビン２室内側の左右方向中央側には、後下部連結材１９の上面の左右方向中央側に設けられた止め金具４１に係合して、リヤパネル１４を閉鎖位置でロックするロック装置４２が設けられている。
また、キャビン２の後部側には、リヤパネル１４を閉鎖位置と開放位置との間の中途位置で係止する係止部材４３が、リヤパネル１４のキャビン２室内側の下部と後下部連結材１９とにわたって設けられている。 Further, a lower side of the rear panel 14 is engaged with a stopper 41 provided at the center in the left-right direction on the upper side of the rear lower connecting member 19 on the center side in the left-right direction on the indoor side of the cabin 2 so that the rear panel 14 is in the closed position. A locking device 42 for locking is provided.
At 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 provided with a lower portion of the rear panel 14 on the cabin 2 room side and the rear lower connecting member 19. Is provided over.

この係止部材４３は、本実施形態では、リヤパネル１４を開放方向に付勢するガスダンパ(ガススプリング)によって形成され、該ガスダンパ４３の基部側は、後下部連結材１９の上面一端部側に固定された取付部４４にボールジョイント４５を介して連結され、ガスダンパ４３のピストンロッド４３ａの先端側には、リヤパネル１４の下部内面側の左右方向中央側に設けられた係合部４６に係脱自在に係合する係合具４７が設けられている。 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 to the distal end side of the piston rod 43a of the gas damper 43, and is detachably engageable with an engaging portion 46 provided at the center in the left-right direction on the lower inner surface side of the rear panel 14. Is provided.

本実施形態では、係合部４６には挿通孔が形成されており、この挿通孔に係合具を上方側から挿抜自在に挿通することにより、係合具４７が係合部４６に対して係脱自在とされている。
また、係止部材４３は、伸張限界で、リヤパネル１４を閉鎖位置と開放位置との間の中途位置（図２１、図２２）で停止させるよう構成されている。 In the present embodiment, an insertion hole is formed in the engagement portion 46, and the engagement tool 47 is inserted into the insertion hole from the upper side so that the engagement tool 47 can be inserted into and removed from the engagement section 46. It is said that it can be disengaged freely.
Further, 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 extension limit.

また、係止部材４３は、基部がボールジョイントを介して取付部４４に連結されていること、ピストンロッド４３ａが出退することにより、閉鎖位置と中途位置との間のリヤパネル１４の動きに追従する。
前記構成のものにあっては、リヤパネル１４の閉鎖位置において、ロック装置４２によるロックを解除すると、リヤパネル１４が開き動作すると共に係止部材４３によって自動的に中途位置で止まり、該リヤパネル１４が若干開いた半開き状態で保持され、キャビン２室内の換気が可能となる。したがって、本実施形態では、リヤパネル１４を半開き状態にする動作を必要としないので便利である。 Further, the locking member 43 follows the movement of the rear panel 14 between the closed position and the halfway position by the base portion being connected to the mounting portion 44 via the ball joint and the piston rod 43a being retracted. I do.
In the configuration described above, when the lock by the lock device 42 is released in the closed position of the rear panel 14, the rear panel 14 opens and stops automatically at the middle position by the locking member 43, and the rear panel 14 is slightly It is held in an open half-open state, and ventilation of the cabin 2 room becomes possible. Therefore, in the present embodiment, the operation for bringing the rear panel 14 into the half-open state is not required, which is convenient.

また、この半開き状態において、係止部材４３を上方に揺動させて該係止部材４３の係合具４７を係合部４６の挿通孔から抜脱すると、付勢部材４８によってリヤパネル１４が開放位置へと揺動する。
なお、本実施形態では、係止部材４３をガスダンパによって形成しているが、これに限定されることはなく、ガスダンパのように付勢するものではなく、単にピストンロッド伸縮が伸縮するだけのものであってもよく、また、中途部が屈曲するように枢支連結された一対のリンクによって構成されていてもよく、リヤパネル１４に対して係脱自在であると共に閉鎖位置と中途位置との間のリヤパネル１４の動きに追従するよう構成されていればよい。 In this half-open state, when the locking member 43 is swung upward and the engaging member 47 of the locking member 43 is pulled out of the insertion hole of the engaging portion 46, the rear panel 14 is opened by the urging member 48. Rocks to the position.
In the present embodiment, the locking member 43 is formed by a gas damper. However, the present invention is not limited to this, and the locking member 43 is not biased like a gas damper, but simply expands and contracts a piston rod. And may be constituted by a pair of links pivotally connected so that the middle part is bent, and is detachable from the rear panel 14 and between the closed position and the middle position. It is only necessary to be configured to follow the movement of the rear panel 14.

図２３に示すように、インナールーフ１２は、運転席７の上方側に対応する部分が上方に向けて凹状の凹部４９とされ、該凹部４９の前部側の縦壁部分４９ａに、インナールーフ１２とアウタールーフ１１との間に収納配置されるエアコン装置を操作する操作具５０が設けられ、凹部４９の後部側の縦壁部分４９ａにエアコン装置の吹出し口５１が設けられ、この吹出し口５１には風向きを操作する操作具５２が設けられる。 As shown in FIG. 23, a portion of the inner roof 12 corresponding to the upper side of the driver's seat 7 is formed as a concave portion 49 having a concave shape facing upward, and a vertical wall portion 49 a on the front side of the concave portion 49 is provided with an inner roof 49. An operating tool 50 for operating the air conditioner housed and disposed between the outer roof 11 and the outer roof 11 is provided. An outlet 51 of the air conditioner is provided in a vertical wall portion 49 a on the rear side of the concave portion 49. Is provided with an operation tool 52 for operating the wind direction.

また、このインナールーフ１２の前縁側は前梁材１６に取付固定され、後縁側は後梁材１７に取付固定され、左右の側縁側は側梁材１８に取付固定されていると共に、該インナールーフ１２は、前梁材１６、後梁材１７、側梁材１８の中高形状に沿って全体的に上方に向けて膨らむように湾曲状に形成されている。
このようにインナールーフ１２を全体的に上方に向けて膨らむように湾曲状に形成する
ことにより、運転者上方のヘッドクリアランスが確保され、また、インナールーフ１２の凹部４９の縦壁部分４９ａに設けられた、エアコン装置を操作する操作具５０や吹出し口５１の操作具５２が運転者に向くことになるので、該操作具５０の操作がしやすくなる。 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 swell upward as a whole along the middle and high shapes of the front beam member 16, the rear beam member 17, and the side beam member 18.
By forming the inner roof 12 in a curved shape so as to expand upward as a whole, a head clearance above the driver is secured, and the inner roof 12 is provided on the vertical wall portion 49a of the concave portion 49 of the inner roof 12. Since the operating tool 50 for operating the air conditioner and the operating tool 52 for the outlet 51 are suitable for the driver, the operation of the operating tool 50 is facilitated.

また、逆に、前梁材１６、後梁材１７、側梁材１８を中高形状とすることにより、全体的に上方に向けて膨らむように湾曲状に形成したインナールーフ１２の、前梁材１６、後梁材１７、側梁材１８への取り付けが容易となる。 Conversely, the front beam member 16, the rear beam member 17, and the side beam member 18 have a middle-high shape, so that the front beam member of the inner roof 12, which is formed in a curved shape so as to bulge upward as a whole. 16, mounting on the rear beam member 17 and the side beam member 18 becomes easy.

６キャビンフレーム
７運転席
８前支柱
９後支柱
１３フロントパネル
１４リヤパネル
１５ドアパネル
１６前梁材
１７後梁材
１８側梁材
３６ライトステー
３７ヒンジ部
Ｌ１左右の後支柱の左右方向外面間の間隔
Ｌ２左右の前支柱の左右方向外面間の間隔 Reference Signs List 6 Cabin frame 7 Driver's seat 8 Front support 9 Rear support 13 Front panel 14 Rear panel 15 Door panel 16 Front beam 17 Rear beam 18 Side beam 36 Light stay 37 Hinge L1 Spacing between left and right rear supports left and right L2 Spacing between left and right front supports in the left-right direction

Claims

A pair of left and right front struts (8) arranged in front of the driver's seat (7), a pair of left and right rear struts (9) arranged behind the driver's seat (7), and left and right front struts (8). ), The front beam (16) connecting the upper ends of the left and right rear struts (9), the front beam (8) and the rear struts (9). ), A lower back connecting member (19) connecting the lower ends of the left and right rear struts (9), and a lower end of each of the left and right front struts (8). A front lower connecting member (25) connected, a front lower frame body (24) having left and right lower portions connected to left and right front lower connecting members (25), and forward from lower ends of left and right rear supports (9). A key having a side frame member (21) extending and moving downward, and a lower side connecting member (23) connecting a front end of the side frame member (21) and a lower end of the front support (8). Equipped with a bottle frame (6),
A front panel (13) is provided in an opening surrounded by the left and right front struts (8), the front beams (16), the front lower frame (24), and the left and right front lower connecting members (25). (13) The upper part (13A) located above the front lower frame (24) and between the upper parts of the left and right front struts (8), and the side part (24a) of the front lower frame (24). A cabin mounted on a vehicle body (3) of a tractor (1) comprising a pair of left and right lower portions (13B) located between the lower portion of a front support (8) and
An upper portion (13A) of the front panel (13) is formed in a spherical shape that is convex forward, and an upper edge side of the upper portion (13A) is bonded to a front surface of the front beam (16).
The front beam member (16) is curved so as to move forward from the left and right ends toward the center in the left-right direction so as to follow the curved shape of the upper edge (13A) of the upper part (13A) of the front panel (13). A cabin, wherein the cabin is formed, and a front surface of the front beam member (16) is formed so as to be inclined obliquely upward.

A pair of left and right front struts (8) arranged in front of the driver's seat (7), a pair of left and right rear struts (9) arranged behind the driver's seat (7), and left and right front struts (8). ), The front beam (16) connecting the upper ends of the left and right rear struts (9), the front beam (8) and the rear struts (9). ), A lower back connecting member (19) connecting the lower ends of the left and right rear struts (9), and a lower end of each of the left and right front struts (8). A front lower connecting member (25) connected, a front lower frame body (24) having left and right lower portions connected to left and right front lower connecting members (25), and forward from lower ends of left and right rear supports (9). A key having a side frame member (21) extending and moving downward, and a lower side connecting member (23) connecting a front end of the side frame member (21) and a lower end of the front support (8). Equipped with a bottle frame (6),
A front panel (13) is provided in an opening surrounded by the left and right front struts (8), the front beams (16), the front lower frame (24), and the left and right front lower connecting members (25). (13) The upper part (13A) located above the front lower frame (24) and between the upper parts of the left and right front struts (8), and the side part (24a) of the front lower frame (24). A pair of lower left and right parts (13B) located between the lower part of the front support (8) and
A rear panel (14) is provided between the rear beam (17) and the lower rear connecting member (19) and between the left and right rear columns (9), and is provided between the rear column (9) and the front column (8). A cabin mounted on a vehicle body (3) of a tractor (1) provided with a door panel (15) closing the space,
The front beam member (16), the rear beam member (17), and the left and right side beam members (18) are arranged so as to be inclined upward and downward toward the outside of the cabin room. ), Wherein the front surface, the rear surface of the rear beam member (17) and the outer side surfaces of the left and right side beam members (18) are inclined so as to shift toward the cabin compartment as going upward.

The front panel (13), the rear panel (14) and the door panel (15) are each formed in a spherical shape protruding in a direction away from the driver's seat (7) and provided on the cabin frame (6). 8) The left and right rear supports (9), the front beam (16), the rear beam (17) and the left and right side beams (18) conform to the curved shape of the corresponding panel (13, 14, 15). The cabin according to claim 2, characterized in that the cabin is formed so as to expand from the driver's seat (7) toward the outside of the cabin.

The said front beam material (16), rear beam material (17), and right and left side beam material (18) are formed by the square pipe of a square cross-section. Cabin as described in.