JP6140215B2

JP6140215B2 - cabin

Info

Publication number: JP6140215B2
Application number: JP2015087741A
Authority: JP
Inventors: 範之宮丸; 章善内島; 内島　　章善
Original assignee: Kubota Corp
Current assignee: Kubota Corp
Priority date: 2015-04-22
Filing date: 2015-04-22
Publication date: 2017-05-31
Anticipated expiration: 2027-11-07
Also published as: JP2015143103A

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

米国特許第６，５４３，８４０号明細書US Pat. 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 bulge from the driver's seat toward the outside of the cabin, and the front panel, the rear panel, and the door panel are each By forming it in a curved shape along the curved shape, a large space around the driver in the cabin is taken.
However, each panel is arranged on the outer surface side of the cabin frame, the front panel is bonded to the outer surfaces of the left and right front columns and the front beam material via a sealing material, and the rear panel is provided with a sealing material on the outer surfaces of the left and right rear columns and the rear beam material. The door panel is in contact with the outer surfaces of the front strut, rear strut, and side beam material via the seal material, so that the outer surfaces of the front beam material, rear beam material, and side beam material are along the vertical direction. Since each panel is curved along each support column, the corners on the upper edge side of each panel come into contact with each beam material, and each panel is in contact with the outer surface of each beam material. There is a problem that it is difficult to make good contact with the upper edge side of the panel.

本発明は、運転席回りの強度確保及び前方視界の確保を図り、運転者回りの室内空間の確保を図ったキャビンを提供することを課題とする。 It is an object of the present invention to provide a cabin that secures the strength around the driver's seat and the front view, and secures an indoor space around the driver.

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に下部が連結された門型状の前下部枠体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を備えてトラクタ１の車体３に搭載したキャビンであって、
前記左右後支柱９には、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と、後支柱９と前支柱８との間を塞ぐドアパネル１５とが設けられ、前記左右前支柱８にはその間を塞ぐフロントパネル１３が設けられており、
前記左右の側梁材１８及び側枠材２１は後端から前端にかけて左右方向外方に広がり配置されており、
前記左右前支柱８と左右後支柱９とは平面視四角配置されており、
前記左右各前支柱８は、キャビン内側の大筒状部とキャビン外側の小筒状部とそれらの間のくびれ部とを有する断面瓢箪状の異形パイプであり、
左右各前支柱８の大筒状部の上端に前梁材１６と側梁材１８とが連結され、大筒状部の下端に前下部連結材２５と側下部連結材２３とが連結され、
左右各前支柱８のくびれ部にフロントパネル１３の側縁とドアパネル１５の前縁が配置されており、
前記左右各後支柱９は、キャビン内側の大筒状部とキャビン外側の小筒状部とそれらの間のくびれ部とを有する断面瓢箪状の異形パイプで形成され、
左右後支柱９の大筒状部の上端に後梁材１７と側梁材１８とが連結され、大筒状部の下端に後下部連結材１９と側枠材２１とが連結され、
左右各後支柱９のくびれ部にリヤパネル１４の側縁とドアパネル１５の後縁が配置されており、
前記ドアパネル１５が左右各後支柱９の小筒状部にヒンジ部３７を介して設けられ、このドアパネル１５を設けた左右各後支柱９の下端部に脚体２６の上端側が連結され、この脚体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、下端がトラクタ１の車体３に取り付けられていることを特徴とする。 The technical means taken by the present invention to solve the technical problems are characterized by the following points.
In the invention according to claim 1, a pair of left and right front struts 8 disposed on the front side of the driver seat 7, a pair of left and right rear struts 9 disposed on the rear side of the driver seat 7, and the left and right front struts 8 A front beam member 16 connecting the upper end sides, a rear beam member 17 connecting the upper end sides of the left and right rear columns 9, and a side beam member 18 connecting the upper ends of the left and right front columns 8 and the rear column 9. A lower lower connecting member 19 that connects the lower ends of the left and right rear struts 9, a front lower connecting member 25 that is connected to the lower ends of the left and right front struts 8, and a lower portion that is connected to the left and right front lower connecting member 25. The gate-shaped front lower frame 24, the side frame member 21 extending forward from the lower end portions of the left and right rear struts 9 and moving downward, the front end portions of the side frame members 21 and the lower ends of the front struts 8 A cabin mounted on the vehicle body 3 of the tractor 1 with a cabin frame 6 having a side lower connecting member 23 for connecting the parts. I,
The left and right rear struts 9 include a rear panel 14 that closes between the rear beam member 17 and the rear lower connecting member 19 and between the left and right rear struts 9, and a door panel 15 that closes between the rear strut 9 and the front strut 8. A front panel 13 is provided on the left and right front support columns 8 to close the space between them;
The left and right side beam members 18 and the side frame members 21 are arranged to extend outward in the left-right direction from the rear end to the front end,
The left and right front struts 8 and the left and right rear struts 9 are squarely arranged in plan view.
Each of the left and right front struts 8 is a deformed pipe having a bowl-shaped cross section having a large cylindrical portion inside the cabin, a small cylindrical portion outside the cabin, and a constricted portion therebetween.
The front beam member 16 and the side beam member 18 are connected to the upper ends of the large cylindrical portions of the left and right front struts 8, and the front lower connecting member 25 and the side lower connecting member 23 are connected to the lower ends of the large cylindrical portions,
The side edge of the front panel 13 and the front edge of the door panel 15 are arranged at the constricted portion of each of the left and right front columns 8,
Each of the left and right rear struts 9 is formed of a deformed pipe having a bowl-shaped cross section having a large cylindrical portion inside the cabin, a small cylindrical portion outside the cabin, and a constricted portion therebetween.
The rear beam member 17 and the side beam member 18 are connected to the upper ends of the large cylindrical portions of the left and right rear columns 9, and the rear lower connecting member 19 and the side frame member 21 are connected to the lower ends of the large cylindrical portions,
The side edge of the rear panel 14 and the rear edge of the door panel 15 are arranged at the constricted portion of each of the left and right rear columns 9 .
The door panel 15 is provided on the small cylindrical portion of each of the left and right rear columns 9 via a hinge portion 37, and the upper end side of the leg body 26 is connected to the lower ends of the left and right rear columns 9 provided with the door panel 15. The body 26 is inclined such that the upper part moves inward in the left-right direction as the upper part goes downward, and the lower end is attached to the vehicle body 3 of the tractor 1 .

請求項２に係る発明では、前記左右各側枠材２１は、後支柱９の下端から前方に向けて斜め外側方に延出した後部側２１ａと、この後部側２１ａの前端から側下部連結材２３に至りかつ側下部連結材２３よりも左右方向外方側にはみ出すように膨らむ湾曲状に形成された湾曲部分２１ｂとを有し、
左右の後支柱９の左右方向外面間の間隔Ｌ１は、左右の前支柱８の左右方向外面間の間隔Ｌ２よりも狭くされており、
左右各側枠材２１の下側に後輪フェンダ２０が固定されており、この各後輪フェンダ２０の後部の幅方向中途部に脚体２６の上端、後支柱９の下端及び側枠材２１の後部側２１ａが配置され、各側枠材２１の湾曲部分２１ｂは後輪フェンダ２０の前部の外側縁に略沿って配置されていることを特徴とする。
請求項３に係る発明では、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、キャビン室内から外方向に向けて膨らむように湾曲状に形成したことを特徴とする。 In the invention according to claim 2, the left and right side frame members 21 include a rear side 21 a extending obliquely outward from the lower end of the rear column 9 toward the front, and a side lower connecting member from the front end of the rear side 21 a. have a curved portion 21b than and side lower coupling member 23 is formed in a curved shape bulging so as to protrude in the lateral outward side leads to 23,
The interval L1 between the left and right outer surfaces of the left and right rear columns 9 is narrower than the interval L2 between the left and right outer surfaces of the left and right front columns 8.
The rear wheel fenders 20 are fixed to the lower sides of the left and right side frame members 21, and the upper ends of the legs 26, the lower ends of the rear struts 9, and the side frame members 21 are arranged in the middle in the width direction of the rear portions of the rear wheel fenders 20. The rear part 21a is arranged, and the curved part 21b of each side frame member 21 is arranged substantially along the outer edge of the front part of the rear wheel fender 20 .
In the invention according to claim 3, the left and right front struts 8, the left and right rear struts 9, the front beam members 16, the rear beam members 17 and the left and right side beam members 18 are curved so as to bulge outward from the cabin interior. It was formed in the shape.

請求項４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、それぞれキャビン室内から外方向に凸となる球面状に形成してキャビンフレーム６に設けたことを特徴とする。
請求項５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、これら前梁材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することにより前梁材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たことを特徴とする。 The invention according to claim 4 is characterized in that the front panel 13, the rear panel 14, and the door panel 15 are each formed in a spherical shape that protrudes outward from the cabin interior and is provided in the cabin frame 6 .
In the invention according to claim 5, 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, and the front beam member 16, the rear beam member 17, and the left and right side beam members 18 are formed. By arranging the side beam members 18 so that the upper and lower surfaces thereof are inclined upward toward the outside of the cabin, the front surfaces of the front beam members 16, the rear surfaces of the rear beam members 17, and the outer surfaces of the left and right side beam members 18 are arranged. Is inclined so as to move upward in the cabin interior direction .

本発明によれば、以下の効果を奏する。
請求項１に係る発明によれば、左右横方向からの負荷に対して柔軟性のある強靱さを備えて運転席回りの強度を確保でき、前方視界の確保を図り、運転者回りの室内空間を確保することができる。
請求項２に係る発明によれば、左右横方向からの負荷に対してより柔軟性のある強靱さを備えることができる。 The present invention has the following effects.
According to the first aspect of the present invention, the strength around the driver's seat can be secured with flexibility and toughness against the load from the left and right lateral directions, the front view can be secured, and the interior space around the driver Can be secured.
According to the invention which concerns on Claim 2, the toughness which can be more flexible with respect to the load from the left-right lateral direction can be provided.

また本発明によれば、キャビン下部に左右横方向及び上下方向からの負荷に対してより柔軟性のある強靱さを備えることができる。
さらに本発明によれば、キャビン下部に左右横方向からの負荷に対してより柔軟性のある強靱さを備えることができる。
さらにまた本発明によれば、運転席回りのキャビン下部の強度を確保できる。 Further , according to the present invention, the cabin lower part can be provided with toughness that is more flexible with respect to loads from the left-right lateral direction and the vertical direction.
Furthermore , according to the present invention, the cabin lower portion can be provided with toughness that is more flexible with respect to the load from the lateral direction.
Furthermore , according to the present invention, the strength of the cabin lower part around the driver's seat can be ensured.

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 back surface 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 up-down direction middle part. 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 diagonally 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 material, (b) is a plan view of the front beam material, and (c) is a front view of the front beam material. （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 member, (b) is a plan view of the side beam member, and (c) is a side view of the side beam member. （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 member, (b) is a plan view of the rear beam member, and (c) is a rear view of the rear beam member. （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 member, (b) is a plan view of the side frame member, and (c) is a front view of the side frame member. 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 cross-sectional view taken along line VV in FIG. 5. 図８のＷ−Ｗ線矢視断面図である。It is a WW arrow directional cross-sectional view of FIG. 図５のＸ−Ｘ線矢視断面図である。FIG. 6 is a cross-sectional view taken along line XX in 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 around the rear panel showing a half-open state of the rear panel. 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 a half-open state of the rear panel. （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 cross-sectional view taken along line YY of (a), and (c) is a cross-sectional view taken along line ZZ.

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 two-shaft, four-wheel tractor 1 is used which is supported by the front wheels 4 and the rear portion of the vehicle body 3 is supported by the left and right rear wheels 5, and the cabin 2 is mounted on the rear portion of the vehicle body 3.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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 made of deformed pipes having a bowl-shaped cross section arranged in the vertical direction, and when viewed from the side, are formed in a curved shape so that the center side in the longitudinal direction swells rearward and has a forward 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 rear side of the rear support 9 is substantially in the vertical direction. As 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 in a curved shape so that the center in the longitudinal direction swells outward in the left-right direction when viewed from the rear, and are provided so as to be inclined inward in the left-right direction, with the upper end at the lower end. (Inclination degree with respect to the vertical direction is provided such that the lower part is smaller than the upper part).
Accordingly, the left and right rear struts 9 are formed in a curved shape so as to swell from the driver's seat 7 toward the cabin 2 outside the cabin.

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

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

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

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 front edge side is contacted to the outer surface of the front support column 8 via the seal material, and the rear edge side is contacted to the outer surface of the rear support column 9 via the seal material. The lower edge side is in contact with the side frame member 21 and the side lower connecting member 23 via a sealant.

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

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

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

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

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

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

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

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

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

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

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

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, and the front end side of the piston rod 43a of the gas damper 43 can be freely engaged with and disengaged from an engaging portion 46 provided at the center in the left-right direction on the lower inner surface side of the rear panel 14. An engaging tool 47 is provided to engage with.

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

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

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

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, the inner roof 12 has a concave portion 49 that is concave toward the upper side of the driver seat 7, and a vertical wall portion 49 a on the front side of the concave portion 49 has an inner roof 12. 12 is provided between the outer roof 11 and the outer roof 11, and an operation tool 50 for operating the air conditioner device is provided. A vertical wall portion 49a on the rear side of the concave portion 49 is provided with an air outlet 51 of the air conditioner. 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。 In addition, the front edge side of the inner roof 12 is attached and fixed to the front beam member 16, the rear edge side is attached and fixed to the rear beam member 17, and the left and right side edge sides are attached and fixed to the side beam member 18. The roof 12 is formed in a curved shape so as to bulge upward as a whole along the medium-high shape of the front beam member 16, the rear beam member 17, and the side beam member 18.
Thus, by forming the inner roof 12 in a curved shape so as to bulge upward as a whole, the head clearance above the driver is secured, and the inner roof 12 is provided in the vertical wall portion 49a of the recess 49 of the inner roof 12. Since the operating tool 50 for operating the air conditioner and the operating tool 52 of the outlet 51 are directed toward the driver, the operating tool 50 can be easily operated.

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

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

Claims

A pair of left and right front columns (8) disposed on the front side of the driver seat (7);
A pair of left and right rear struts (9) disposed on the rear side of the driver seat (7);
Front beam members (16) for connecting the upper end sides of the left and right front columns (8);
A rear beam member (17) for connecting the upper end sides of the left and right rear columns (9);
Side beam members (18) for connecting the upper ends of the left and right front struts (8) and the rear strut (9);
A rear lower connecting member (19) for connecting the lower ends of the left and right rear struts (9);
A front lower connecting member (25) connected to the lower ends of the left and right front struts (8);
A gate-shaped front lower frame (24) whose lower part is connected to the left and right front lower connecting members (25);
A side frame member (21) that extends forward and moves downward from the lower end of each of the left and right rear struts (9);
The vehicle body (3) of the tractor (1) is provided with a cabin frame (6) having a side lower connecting member (23) for connecting the front end of the side frame member (21) and the lower end of the front column (8). An installed cabin,
The left and right rear struts (9) include a rear panel (14) for closing between the rear beam member (17) and the rear lower connecting member (19) and between the left and right rear struts (9), and a rear strut (9), A door panel (15) is provided between the front strut (8) and a front panel (13) is provided between the left and right front struts (8).
The left and right side beam members (18) and the side frame members (21) are arranged to extend outward in the left-right direction from the rear end to the front end,
The left and right front struts (8) and the left and right rear struts (9) are arranged in a square in plan view.
Each of the left and right front struts (8) is a deformed pipe having a bowl-shaped cross section having a large cylindrical portion inside the cabin, a small cylindrical portion outside the cabin, and a constricted portion between them.
The front beam member (16) and the side beam member (18) are connected to the upper ends of the large cylindrical portions of the left and right front struts (8), and the front lower connecting member (25) and the side lower connecting members are connected to the lower ends of the large cylindrical portions. (23) is connected,
The side edge of the front panel (13) and the front edge of the door panel (15) are arranged at the constricted portions of the left and right front struts (8),
Each of the left and right rear struts (9) is formed of a deformed pipe having a bowl-shaped cross section having a large cylindrical part inside the cabin, a small cylindrical part outside the cabin, and a constricted part between them.
The rear beam member (17) and the side beam member (18) are connected to the upper ends of the large cylindrical portions of the left and right rear columns (9), and the rear lower connecting member (19) and the side frame members (21) are connected to the lower ends of the large cylindrical portions. ) And
The side edge of the rear panel (14) and the rear edge of the door panel (15) are arranged at the constricted portions of the left and right rear posts (9) ,
The door panel (15) is provided on the small cylindrical portion of each of the left and right rear struts (9) via a hinge portion (37), and a leg is attached to the lower end of each of the left and right rear struts (9) provided with the door panel (15). The upper end side of the body (26) is connected, and the leg body (26) is inclined so as to move inward in the left-right direction as the upper part goes downward, and the lower end is attached to the vehicle body (3) of the tractor (1). The cabin is characterized by that.

A pair of left and right front columns (8) disposed on the front side of the driver seat (7);
A pair of left and right rear struts (9) disposed on the rear side of the driver seat (7);
Front beam members (16) for connecting the upper end sides of the left and right front columns (8);
A rear beam member (17) for connecting the upper end sides of the left and right rear columns (9);
Side beam members (18) for connecting the upper ends of the left and right front struts (8) and the rear strut (9);
A rear lower connecting member (19) for connecting the lower ends of the left and right rear struts (9);
A front lower connecting member (25) connected to the lower ends of the left and right front struts (8);
A gate-shaped front lower frame (24) whose lower part is connected to the left and right front lower connecting members (25);
A side frame member (21) that extends forward and moves downward from the lower end of each of the left and right rear struts (9);
The vehicle body (3) of the tractor (1) is provided with a cabin frame (6) having a side lower connecting member (23) for connecting the front end of the side frame member (21) and the lower end of the front column (8). An installed cabin,
The left and right rear struts (9) include a rear panel (14) for closing between the rear beam member (17) and the rear lower connecting member (19) and between the left and right rear struts (9), and a rear strut (9), A door panel (15) is provided between the front strut (8) and a front panel (13) is provided between the left and right front struts (8).
The left and right side beam members (18) and the side frame members (21) are arranged to extend outward in the left-right direction from the rear end to the front end,
The left and right front struts (8) and the left and right rear struts (9) are arranged in a square in plan view.
Each of the left and right front struts (8) is a deformed pipe having a bowl-shaped cross section having a large cylindrical portion inside the cabin, a small cylindrical portion outside the cabin, and a constricted portion between them.
The front beam member (16) and the side beam member (18) are connected to the upper ends of the large cylindrical portions of the left and right front struts (8), and the front lower connecting member (25) and the side lower connecting members are connected to the lower ends of the large cylindrical portions. (23) is connected,
The side edge of the front panel (13) and the front edge of the door panel (15) are arranged at the constricted portions of the left and right front struts (8),
Each of the left and right rear struts (9) is formed of a deformed pipe having a bowl-shaped cross section having a large cylindrical part inside the cabin, a small cylindrical part outside the cabin, and a constricted part between them.
The rear beam member (17) and the side beam member (18) are connected to the upper ends of the large cylindrical portions of the left and right rear columns (9), and the rear lower connecting member (19) and the side frame members (21) are connected to the lower ends of the large cylindrical portions. ) And
The side edge of the rear panel (14) and the rear edge of the door panel (15) are arranged at the constricted portions of the left and right rear posts (9),
Each of the left and right side frame members (21) includes a rear side (21a) extending obliquely outward from the lower end of the rear column (9) and a lower side connecting member from the front end of the rear side (21a). (23) than and side lower coupling member (23) reaches to have a curved shape formed curved portion bulging so as to protrude in the lateral outward side (21b),
The distance (L1) between the left and right outer surfaces of the left and right rear columns (9) is narrower than the distance (L2) between the left and right outer surfaces of the left and right front columns (8).
The rear wheel fender (20) is fixed to the lower side of each of the left and right side frame members (21), and the upper end of the leg (26), the rear strut in the middle in the width direction of the rear of each rear wheel fender (20) The lower end of (9) and the rear side (21a) of the side frame member (21) are arranged, and the curved portion (21b) of each side frame member (21) is substantially at the outer edge of the front portion of the rear wheel fender (20). The cabin according to claim 1, wherein the cabin is arranged along .

The left and right front struts (8), the left and right rear struts (9), the front beam members (16), the rear beam members (17), and the left and right side beam members (18) are expanded outward from the cabin interior. The cabin according to claim 1, wherein the cabin is formed in a curved shape.

The front panel (13), the rear panel (14), and the door panel (15) are each formed in a spherical shape that protrudes outward from the cabin interior and is provided on the cabin frame (6). The cabin according to any one of -3.

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, and the front beam member (16), the rear beam member (17), and By arranging the left and right side beam members (18) so that the upper and lower surfaces thereof are inclined upward toward the cabin room, the front surface of the front beam member (16), the rear surface of the rear beam member (17), and the left and right sides The cabin according to any one of claims 1 to 4, wherein the side beam member (18) is inclined so that the outer surface of the side beam member (18) moves upward toward the cabin interior.