JP2021142827A - Travel vehicle - Google Patents

Abstract

To provide a travel vehicle in which a mirror surface member, that is configured from an operation part side to a display board side, can be visually confirmed easily, and a base part side and the like of a working machine connection part such as a tractor and so on can be also visually confirmed when opening a rear window to a prescribed opened attitude.SOLUTION: In the travel vehicle, a rear window 9, of which a lower part side is opened backward with an upper part as a fulcrum via a hinge 13, is provided in a rear opening 6k of a cabin 6 covering an operation part 5, and a display board 10, which displays that the vehicle is travelling at a low speed on a lower part side of the rear window 9, is provided along a rear side surface of a window glass 8. A mirror surface member 11 is provided on a back side of the display board 10. When the rear window 9 is made to an opened and stopped attitude in which the rear window is opened backward and stopped, an operator existing on the operation part 5 side can visually confirm a mirror image of a lower part side of a travel vehicle 1, that is reflected on the mirror surface member 11.SELECTED DRAWING: Figure 3

Description

本発明は、表示板設置構造を備えるトラクタ等の走行車両に関する。 The present invention relates to a traveling vehicle such as a tractor having a display board installation structure.

車室内から車両の後方下部を視認するためのリヤアンダーミラー装置として、車体の後部開口を開閉する後部窓（テールゲート）の回動中心近傍の車内側に、該後部窓の開閉動作に追随するホルダを設け、該ホルダの外面に後部窓の閉状態のときには乗員から視認不可となり、開状態のときには視認可能となるように鏡体を設けた走行車両（自動車）のリヤアンダーミラー構造が既に公知である。（例えば、特許文献１参照）。
一方、農業用走行車両としてキャビン付きのトラクタでは、自動車のように高速走行をしないため、その旨を表記した低速車マーク等を表記した表示板の付設が義務づけられており、この表示板をキャビンの後部窓の背面下部側に設置することが一般に行われ公知である。（例えば、特許文献２参照）。 As a rear under mirror device for visually recognizing the lower rear part of the vehicle from the vehicle interior, it follows the opening / closing operation of the rear window inside the vehicle near the center of rotation of the rear window (tailgate) that opens / closes the rear opening of the vehicle body. The rear under mirror structure of a traveling vehicle (automobile) in which a holder is provided and a mirror body is provided on the outer surface of the holder so that the rear window cannot be seen by the occupant when the rear window is closed and can be seen when the rear window is open is already known. Is. (See, for example, Patent Document 1).
On the other hand, tractors with cabins as agricultural vehicles do not travel at high speeds like automobiles, so it is obligatory to attach a display board with a low-speed vehicle mark to that effect, and this display board is used in the cabin. It is generally practiced and known to be installed on the lower back side of the rear window. (See, for example, Patent Document 2).

特開２００９−２４８８１５号公報JP-A-2009-248815 特開２００４−９０７５９号公報Japanese Unexamined Patent Publication No. 2004-90759

上記特許文献１に示されるリヤアンダーミラー装置は、後部窓を閉じたとき鏡体を車内後部の上方に設置できるため、鏡体を車内の物体に接触し難くすることができ、また鏡体を車内後部の上方に設置しながら、走行時に鏡体を視界内に入らないようにすることができる利点がある。
然しながら、このアンダーミラー構造による鏡体は、後部窓を開けた回動位置から直下を平面視的に映し出される映像（鏡像）を視認することができるものの、当該直下位置から前方側の鏡像を後方寄りの角度から映し出すことができない欠点がある。
一方、特許文献２で示されるように走行車両が、走行機体の後部に耕耘装置等の対地作業機を昇降可能に支持する作業機連結部を備えるキャビン付きのトラクタである場合に、上記アンダーミラー構造をキャビンの後部開口に対し設置しようとすると、鏡体は後部窓の回動支点であるヒンジ部の近傍に設けられることになる。
然しながら、上記構成にした場合のアンダーミラー構造の鏡体は、前記作業機連結部の平面視での鏡像視認はできるものの、特に前方リンク基部側の状況を後方側から立体的に視認することができない不具合があり、この箇所の確認のためには、オペレータが地上に降りて確認するか、又は後部窓を大きく開放した状態で運転席（座席シート）を超えて身をのりだした無理な姿勢で下方を覗き見することになる。
そこで、上記キャビン設置型の農業用トラクタでは、後部窓を開放した状態でオペレータが運転席から単に振り返り見る等の簡単な動作によって、トラクタのリンク基部の状況を後方視認することが求められる。
然しながら、この場合には表示板と鏡体とを窓ガラスの背後で左右幅内に並べて設置すると、後部窓を閉じて走行作業を行う際に、表示板と鏡体とは後部窓の窓ガラス下部面側の左右を高く広い面積を占めて塞ぐことになるので、オペレータは後方下部側からの視界が妨げられると共に、鏡体を設置するための設置構造も煩雑化し、コスト高になる等の課題を生ずることになる。 In the rear under mirror device shown in Patent Document 1, since the mirror body can be installed above the rear part of the vehicle when the rear window is closed, the mirror body can be made difficult to come into contact with an object in the vehicle, and the mirror body can be mounted. There is an advantage that the mirror body can be kept out of sight while driving while being installed above the rear part of the vehicle.
However, although the mirror body with this under-mirror structure can visually recognize the image (mirror image) projected in a plan view from the rotation position where the rear window is opened, the mirror image on the front side is rearward from the position directly below. There is a drawback that it cannot be projected from a closer angle.
On the other hand, as shown in Patent Document 2, when the traveling vehicle is a tractor with a cabin provided with a working machine connecting portion for vertically supporting a ground working machine such as a tilling device at the rear part of the traveling machine body, the under mirror is described above. If the structure is to be installed relative to the rear opening of the cabin, the mirror body will be provided near the hinge portion, which is the rotation fulcrum of the rear window.
However, although the mirror body having the under-mirror structure in the above configuration can visually recognize the mirror image of the working machine connecting portion in a plan view, it is possible to three-dimensionally visually recognize the situation on the front link base side in particular from the rear side. There is a problem that cannot be done, and in order to check this part, the operator either goes down to the ground to check, or leans over the driver's seat (seat) with the rear window wide open. You will have a peek below.
Therefore, in the cabin-installed agricultural tractor, it is required that the operator simply looks back from the driver's seat with the rear window open to visually recognize the state of the link base of the tractor from the rear.
However, in this case, if the display board and the mirror body are installed side by side within the left and right width behind the window glass, when the rear window is closed and the running work is performed, the display board and the mirror body are the window glass of the rear window. Since the left and right sides of the lower surface side are blocked by occupying a large area, the operator is obstructed from the view from the rear lower side, and the installation structure for installing the mirror body becomes complicated, resulting in high cost. It will cause problems.

上記課題を解決するための本発明は、第１に、運転部５を覆うキャビン６の後部開口６ｋに、ヒンジ１３を介し上部を支点に下部側を後方に向けて開動させる後部窓９を設け、該後部窓９の下部側に対し低速走行車両であることを表示する表示板１０を窓ガラス８の後側面に沿わせて設ける走行車両において、
前記表示板１０の背面側に鏡面部材１１を設けると共に、後部窓９を後方に開動し停止させた開動停止姿勢にしたとき、運転部５側に居るオペレータが鏡面部材１１に映る走行車両１の下部側の鏡像（反射像）を視認可能に構成することを特徴としている。
第２に、前記鏡面部材１１を、後部窓９の窓ガラス８に沿わせて取付ける設置姿勢から、窓ガラス８に沿って上下又は左右方向に移動可能に構成することを特徴としている。 In the present invention for solving the above problems, first, a rear window 9 for opening the rear opening 6k of the cabin 6 covering the driving unit 5 with the upper part as a fulcrum and the lower side toward the rear is provided via a hinge 13. In a traveling vehicle in which a display plate 10 indicating that the vehicle is traveling at a low speed is provided along the rear side surface of the window glass 8 with respect to the lower side of the rear window 9.
When the mirror surface member 11 is provided on the back side of the display plate 10 and the rear window 9 is opened and stopped rearward, the operator on the driving unit 5 side is reflected on the mirror surface member 11. The feature is that the mirror image (reflection image) on the lower side is visible.
Secondly, the mirror surface member 11 is configured to be movable up and down or left and right along the window glass 8 from an installation posture in which the mirror surface member 11 is attached along the window glass 8 of the rear window 9.

請求項１に係る発明によれば、運転部を覆うキャビンの後部開口に、ヒンジを介し上部を支点に下部側を後方に向けて開動させる後部窓を有し、該後部窓の下部側に対し低速走行車両であることを表示する表示板を窓ガラスの後側面に沿わせて設ける走行車両において、前記表示板の背面側に鏡面部材を設けると共に、後部窓を後方に開動し停止させた開動停止姿勢にしたとき、運転部側に居るオペレータが鏡面部材に映る走行車両の下部側の鏡像を視認可能に構成することにより、
オペレータは、後部窓を所定の開動姿勢に開けるだけで運転部に居ながらにして、表示板側に構成される鏡面部材を楽に目視できると共に、走行車両の下部側の鏡像を映す鏡面部材は、トラクタ等の作業機連結部の基部側等も視認可能にすることができるため所要部の点検並びに監視を行い易くすることができる。
また表示板と鏡面部材とは、後部窓の下部側に別々に並べて設置することを避けコンパクトに設置することもできるので、運転部側から見る窓ガラスからの後方視界を大きく妨げることなく、また表示板の表記も外観し易くする等の特徴がある。
第２に、前記鏡面部材を、後部窓の窓ガラスに沿わせて取付ける設置姿勢から、窓ガラスに沿って上下又は左右方向に移動可能に構成することにより、
オペレータは運転部から離間した位置で、鏡面部材を左右又は上下に移動させた移動姿勢で映る鏡像を容易に視認できるため、鏡面部材を介して所要部の点検並びに監視等を能率よく適切に行うことができる。 According to the invention of claim 1, the rear opening of the cabin covering the driving portion has a rear window that opens with the upper part as a fulcrum and the lower side toward the rear via a hinge, with respect to the lower side of the rear window. In a traveling vehicle in which a display plate indicating that the vehicle is traveling at a low speed is provided along the rear side surface of the window glass, a mirror surface member is provided on the back side of the display plate, and the rear window is opened and stopped rearward. When the vehicle is in the stopped position, the operator on the driver's side can see the mirror image on the lower side of the traveling vehicle reflected on the mirror surface member.
The operator can easily see the mirror surface member configured on the display plate side while staying in the driving unit by simply opening the rear window in the predetermined opening posture, and the mirror surface member that reflects the mirror image on the lower side of the traveling vehicle is Since the base side of the work equipment connecting portion such as a tractor can also be made visible, it is possible to facilitate inspection and monitoring of the required portion.
In addition, the display plate and the mirror surface member can be installed compactly without being placed side by side on the lower side of the rear window, so that the rear view from the window glass seen from the driver's side is not significantly obstructed. The notation on the display board also has features such as making it easier to see.
Secondly, the mirror surface member is configured to be movable up and down or left and right along the window glass from the installation posture in which the mirror surface member is attached along the window glass of the rear window.
Since the operator can easily see the mirror image reflected in the moving posture in which the mirror surface member is moved left and right or up and down at a position away from the driving unit, the required part can be inspected and monitored efficiently and appropriately through the mirror surface member. be able to.

本発明を適用したキャビンを備えるトラクタの全体左側面図である。It is the whole left side view of the tractor provided with the cabin to which this invention is applied. キャビンの背面構造と表示板の表示姿勢を示す後方斜視図である。It is a rear perspective view which shows the rear structure of a cabin and the display posture of a display board. キャビンの後部窓を開動した開動停止姿勢を示す後方斜視図である。It is a rear perspective view which shows the opening stop posture which opened the rear window of a cabin. 表示板と鏡面部材の取付構造を分解して示す前方斜視図である。It is a front perspective view which shows by disassembling the mounting structure of a display plate and a mirror surface member. 第２実施形態の表示板を後方突出視認姿勢にした状態を示す側面図である。It is a side view which shows the state which made the display board of the 2nd Embodiment a rear view | view | posture. 図５の表示板を視認姿勢変更機構を介して取付ける態様を示す前方斜視図である。FIG. 5 is a front perspective view showing a mode in which the display board of FIG. 5 is attached via a visual posture changing mechanism.

本発明の一実施形態を図面に基づいて説明する。図１に示す走行車両としてのトラクタ１は、左右一対の前輪２ａ及び後輪２ｂを備える走行機体２の前部に搭載するエンジン３をボンネット４で覆うと共に、その後方に作業者が乗車する運転部５をキャビン６で覆って設置し、該キャビン６の後部下方に位置する機体後部に、各種の作業機（図示せず）を昇降動作可能に連結する３点リンク機構とヒッチ部等からなる作業機連結部７を備えた構造になっている。 An embodiment of the present invention will be described with reference to the drawings. The tractor 1 as a traveling vehicle shown in FIG. 1 covers an engine 3 mounted on the front portion of a traveling machine body 2 having a pair of left and right front wheels 2a and rear wheels 2b with a bonnet 4, and an operation in which an operator rides behind the engine 3. The part 5 is covered with the cabin 6 and installed, and is composed of a three-point link mechanism and a hitch part for connecting various work machines (not shown) to the rear part of the machine body located below the rear part of the cabin 6 so as to be able to move up and down. It has a structure provided with a working machine connecting portion 7.

上記運転部５は、ボンネット４の後方に前輪２ａを操向操作するステアリング５ａを立設し、乗降用のデッキ部５ｂを介し運転席５ｃを配置している。
キャビン６は従来のものと同様に、天井屋根（ルーフ）を有する箱状枠体をなすキャビンフレーム６ａの前面にフロントガラスを張設し、両側に乗降用ドア６ｂと後部サイド窓６ｃを設け、キャビンフレーム６ａの後部に後部開口６ｋ（開口孔）を形成する後部外周フレーム６ｄに対し、方形状の窓ガラス８を張設して構成される後部窓９を開閉自在に備えている。
そして、キャビン６は、キャビンフレーム６ａの下部側に形成される外周フレームを、前記ボンネット４とデッキ部５ｂと左右の後輪２ｂを覆うフェンダ２ｃに合致させた状態で走行機体２に対し着脱可能に設置される。 The driver unit 5 has a steering wheel 5a for steering the front wheels 2a erected behind the bonnet 4, and a driver's seat 5c is arranged via a deck unit 5b for getting on and off.
Similar to the conventional cabin 6, the cabin 6 has a windshield stretched on the front surface of the cabin frame 6a forming a box-shaped frame having a ceiling roof, and is provided with doors 6b for getting on and off and rear side windows 6c on both sides. A rear window 9 formed by stretching a square window glass 8 is provided on the rear outer peripheral frame 6d forming a rear opening 6k (opening hole) at the rear of the cabin frame 6a so as to be openable and closable.
The cabin 6 can be attached to and detached from the traveling machine body 2 in a state where the outer peripheral frame formed on the lower side of the cabin frame 6a is matched with the bonnet 4, the deck portion 5b, and the fenders 2c covering the left and right rear wheels 2b. Will be installed in.

次に、図２〜図４を参照し上記構成によるキャビン６の後部窓９と、該後部窓９に設置される本発明に係る表示板設置構造（アンダーミラー構造）について説明する。
このキャビン６の後部窓９には、上記後部窓９の後面下部側に取付けて低速車マークを表記した表示板１０と、該表示板１０の背面（機体前進方向としての前面）側に対して付設される鏡面部材１１等からなる本発明に係るアンダーミラー装置１２を設置している。 Next, with reference to FIGS. 2 to 4, the rear window 9 of the cabin 6 having the above configuration and the display board installation structure (under mirror structure) according to the present invention installed in the rear window 9 will be described.
The rear window 9 of the cabin 6 has a display plate 10 attached to the lower rear side of the rear window 9 and marked with a low-speed vehicle mark, and a rear surface (front surface in the forward direction of the aircraft) side of the display plate 10. An under mirror device 12 according to the present invention, which is composed of an attached mirror surface member 11 and the like, is installed.

これによるトラクタ１は、図１,図２に示すように、後部窓９を閉じて行う通常の路上走行及び耕耘作業等を行う圃場の作業走行時においては、表示板１０はその低速車マークを後部窓９の窓ガラスに沿った姿勢にあるため、後方側から当該トラクタ１が低速車であることを広く認知させることができる。一方、オペレータが作業機連結部７の基部側等所定部位を視認する場合には、前記後部窓９を図３,（図５）に示すように上方に向けて開動すると、後述するように開動停止姿勢にすることができ、運転部５に居るオペレータが、鏡面部材１１に映る走行機体２の下部側の鏡像を視認可能にすることができる。 As shown in FIGS. 1 and 2, the tractor 1 resulting from this displays the low-speed vehicle mark on the display board 10 during normal road traveling with the rear window 9 closed and during work traveling in a field where tilling work or the like is performed. Since the tractor 1 is in a posture along the window glass of the rear window 9, it is possible to widely recognize that the tractor 1 is a low-speed vehicle from the rear side. On the other hand, when the operator visually recognizes a predetermined portion such as the base side of the work equipment connecting portion 7, when the rear window 9 is opened upward as shown in FIGS. The stop posture can be set, and the operator in the driving unit 5 can visually recognize the mirror image on the lower side of the traveling machine body 2 reflected on the mirror surface member 11.

次に、図１〜図４を参照しキャビン６の後部窓９及び表示板１０並びに鏡面部材１１等からなる表示板設置構造について説明する。
先ず、図示例の後部窓９は、前記後面側フレーム６ｄで形成される方形状の後部開口６ｋの外周に沿って貼着されるパッキング９ａに対し、窓ガラス８の各縁部がラップする大きさと形状にしていると共に、後面側フレーム６ｄ又はルーフに対し窓ガラス上辺部左右を複数のヒンジ１３を介して開閉回動自在に取付けている。 Next, a display board installation structure including the rear window 9 of the cabin 6, the display board 10, the mirror surface member 11, and the like will be described with reference to FIGS. 1 to 4.
First, the rear window 9 of the illustrated example has a size in which each edge of the window glass 8 wraps around the packing 9a attached along the outer circumference of the square rear opening 6k formed by the rear surface side frame 6d. In addition to being shaped like a glass, the left and right sides of the upper side of the window glass are rotatably attached to the rear frame 6d or the roof via a plurality of hinges 13.

そして、後部窓９は窓ガラス下辺の略中央部に対し、窓開閉レバー１４の軸部１４ａを従来のものと同様な取付手段によって、軸取付機構１５の機構本体部１５ａと取付板部材１５ｂとの間で窓ガラスを挟持した状態で取付ける。
上記窓開閉レバー１４は、その他端に突設する係合片１４ｂを後面側フレーム６ｄの下辺の一部に係脱自在に係合させることができ、後部窓９によって外周のパッキング９ａを押圧した状態で前記後部開口６ｋを閉鎖することができる。 Then, in the rear window 9, the shaft portion 14a of the window opening / closing lever 14 is attached to the shaft portion 14a of the window opening / closing lever 14 with the mechanism main body portion 15a of the shaft mounting mechanism 15 and the mounting plate member 15b by the same mounting means as those of the conventional one with respect to the substantially central portion of the lower side of the window glass. Install with the window glass sandwiched between them.
The window opening / closing lever 14 can engage the engaging piece 14b projecting from the other end with a part of the lower side of the rear surface side frame 6d in a detachable manner, and presses the outer peripheral packing 9a by the rear window 9. The rear opening 6k can be closed in this state.

これによりオペレータは、窓開閉レバー１４を把持し係合片１４ｂを解除操作しながら後部窓９を後方に向けて押動し、ヒンジ１３、１３を支点として上方に向けて開動すると、図３,図５に示すように後部窓９を下り傾斜状に開放する開動姿勢を、左右のガスシリンダー９ｂによって鋭角状の設定角度にした窓開け姿勢に保持することができ、また後部窓９の閉じ操作は、従来のものと同様に逆順の操作によって行うことができる。
尚、上記ガスシリンダー９ｂは、必要により所望個所を視認可能な鏡体を取付ける部材として使用してもよく、また同様な鏡体を窓開閉レバー１４にも利用設置することができる。 As a result, the operator grips the window opening / closing lever 14 and pushes the rear window 9 backward while releasing the engaging piece 14b, and opens the rear window 9 upward with the hinges 13 and 13 as fulcrums. As shown in FIG. 5, the opening posture in which the rear window 9 is opened in a downward inclined manner can be maintained in the window opening posture in which the rear window 9 is opened at an acute angle set angle by the left and right gas cylinders 9b, and the rear window 9 is closed. Can be performed by operating in the reverse order as in the conventional case.
If necessary, the gas cylinder 9b may be used as a member for attaching a mirror body in which a desired portion can be visually recognized, and a similar mirror body can also be used and installed in the window opening / closing lever 14.

上記表示板１０は、外形及び大きさを従来のものと同じ背面視略三角形状のプレートにしており、低速車マークを表示する表面側の背面（裏面）側には、走行機体２の後部側つまり作業機連結部７側の所定位置の鏡像を映し出せる鏡面部材１１を設けている。
この鏡面部材１１は、例えば、メッキ加工又は鏡面フィルム貼着又は鏡面塗料又は鏡面仕上げ施工又は磨きステンレス板付設等の鏡面手段の付設によって、表示板１０の背面側に設けることができ、この場合には、表示板１０そのものを鏡面部材１１の本体部に兼用することができるので、鏡面部材１１の設置構造を簡潔安価に製作できると共に、取り扱い易い構成にすることができる。 The display plate 10 has a substantially triangular shape in the rear view having the same outer shape and size as the conventional one, and the rear side (rear surface) side of the front side for displaying the low-speed vehicle mark is the rear side of the traveling machine body 2. That is, a mirror surface member 11 capable of projecting a mirror image at a predetermined position on the work equipment connecting portion 7 side is provided.
The mirror surface member 11 can be provided on the back side of the display plate 10 by, for example, plating, attaching a mirror surface film, mirror surface paint, mirror finishing work, or attaching a polished stainless steel plate. Since the display plate 10 itself can be used as the main body of the mirror surface member 11, the installation structure of the mirror surface member 11 can be manufactured simply and inexpensively, and can be easily handled.

そして、図４で示すように実施形態の表示板１０は、三角形の底辺の中央部に下向きに延長する板状のブラケット１６を突設しており、該ブラケット１６を前記軸取付機構１５の取付板部材１５ｂ側に複数のボルト１６ａによって締結することにより、鏡面部材１１がガラス面と所定間隔を有して略平行状なすように安定的に取付支持するようにしている。
このブラケット１６は、可撓性を有して人為的に曲げ変形可能に形成すると共に、ボルト１６ａを挿入するボルト孔を長孔又はバカ孔状に形成してもよく、この場合には後部窓９の窓開け姿勢において、身長が大きく異なるオペレータでも所定位置を適正に見ることができるように、鏡面部材１１の左右上下位置又は角度を選択調節をして視認を楽な姿勢で適切に行うことを可能にする。 Then, as shown in FIG. 4, the display plate 10 of the embodiment projects a plate-shaped bracket 16 extending downward at the center of the base of the triangle, and the bracket 16 is attached to the shaft mounting mechanism 15. By fastening to the plate member 15b side with a plurality of bolts 16a, the mirror surface member 11 is stably mounted and supported so as to be substantially parallel to the glass surface at a predetermined distance.
The bracket 16 may be formed to be flexible and artificially bendable and deformable, and the bolt holes for inserting the bolts 16a may be formed in the shape of elongated holes or stupid holes. In this case, the rear window may be formed. In the window opening posture of 9, the left / right / vertical position or angle of the mirror surface member 11 is selectively adjusted so that even operators having significantly different heights can properly see the predetermined position, and the visual recognition is appropriately performed in a comfortable posture. To enable.

従って、表示板１０と鏡面部材１１とは、後部窓９の下部側に別々に並べて設置することを避けて、運転席５ｃの背凭れ部の背後で窓ガラス部分に近接させた位置に重ねて纏めた構成となしてコンパクトに設置することができ、また運転部３側から見る窓ガラス下部側の後方視界を妨げることなく設置できる等の利点がある。
尚、表示板１０とは別体で鏡面部材１１を構成する場合には、該鏡面部材１１は所望形状にしたものを表示板１０の下方に重ねた状態で設置することが望ましく、この場合には、鏡面部材１１の取付け基部側を側方及び後方側に回動移動可能に取付支持することを容易にするので、この移動範囲における鏡像位置を調節して各部の視認を容易にできる利点がある。 Therefore, the display plate 10 and the mirror surface member 11 are overlapped at a position close to the window glass portion behind the backrest portion of the driver's seat 5c, avoiding the installation of the display plate 10 and the mirror surface member 11 separately on the lower side of the rear window 9. It has the advantages that it can be installed compactly in a unified configuration, and that it can be installed without obstructing the rear view of the lower side of the window glass as seen from the driving unit 3 side.
When the mirror surface member 11 is formed separately from the display plate 10, it is desirable that the mirror surface member 11 having a desired shape is installed under the display plate 10 in a state of being overlapped. In this case, Makes it easy to mount and support the mounting base side of the mirror surface member 11 so as to be rotatable sideways and rearward, so that there is an advantage that the mirror image position in this moving range can be adjusted to facilitate visual recognition of each part. be.

また図示例の後部窓９は、左側上部に位置させて窓ガラス８を清掃するワイパー１８を、室内側に取付けられるワイパ駆動部１８ａによって駆動可能に構成している。尚、このワイパ駆動部１８ａは本体側を覆うカバー１８ｂを広幅な平坦面又は凸面状に形成し、該カバー１８ｂの表面に鏡面手段を付設することにより、所望個所を視認するミラー装置として利用することができる。 Further, the rear window 9 of the illustrated example is configured so that the wiper 18 located on the upper left side for cleaning the window glass 8 can be driven by the wiper drive unit 18a mounted on the indoor side. The wiper drive unit 18a is used as a mirror device for visually recognizing a desired portion by forming a cover 18b covering the main body side into a wide flat surface or a convex surface and attaching a mirror surface means to the surface of the cover 18b. be able to.

以上のように構成される表示板設置構造を備えるトラクタ１は、キャビン６の後部開口６ｋの上部を支点に開閉回動自在に支持される後部窓９の下部側に、裏側に鏡面部材１１を有する表示板１０を低速車マークを後方向きに設置するため、走行時に表示板１０の低速車マークは目視し易い高さにあることによって低速走行車であることを認知し易くすることができる。
また表示板１０は、後部窓９の下部側において窓の左右幅の略中央部に三角形の頂点部位を位置決めして設けることが望ましく、この場合には当該表示板１０と鏡面部材１１は、運転席５ｃの背凭れ部の背後で視角的に隠れるように位置決めされるので、オペレータが左右いずれから振り向いたとしても表示板１０と鏡面部材１１とは後方視界を大きく妨げないと共に、表示板１０を可及的に大きくして見易くすることも可能にする等の利点を創出する。 The tractor 1 having the display board installation structure configured as described above has a mirror surface member 11 on the lower side of the rear window 9 which is rotatably supported by opening and closing the upper part of the rear opening 6k of the cabin 6 as a fulcrum. Since the low-speed vehicle mark of the display board 10 is installed so as to face rearward, it is possible to easily recognize that the vehicle is a low-speed traveling vehicle because the low-speed vehicle mark of the display plate 10 is at a height that is easy to see when traveling.
Further, it is desirable that the display plate 10 is provided by positioning the apex portion of the triangle at the substantially central portion of the left-right width of the window on the lower side of the rear window 9. In this case, the display plate 10 and the mirror surface member 11 are operated. Since the seat 5c is positioned so as to be hidden behind the backrest portion in a visual angle, the display plate 10 and the mirror surface member 11 do not significantly obstruct the rear view even if the operator turns from the left or right, and the display plate 10 is used. Create advantages such as making it as large as possible to make it easier to see.

そして、機体後部の下方を視認したい場合には、前記したように窓開閉レバー１４を解除操作し後部窓９を後方に向けて押動しながら設定角度に保持すると、表示板１０の背面に付設される鏡面部材１１によって走行車両１の下部側を後方から所定角を有して映すことができるので、オペレータは運転席５ｃに着座したまま単に振り向くだけの簡単且つ楽な動作によって鏡面鏡像を窓ガラス８を通して速やか且つ適正に視認することができる。
つまり、オペレータはこの箇所の確認のために、地上に降りて機体後部に移動したり、後部窓９を大きく開放した状態で運転席５ｃを超えて身をのりだす等の無理な姿勢をとることなく視認を容易にすることができ、また走行機体２の後部側の点検並びに監視を適正に行うことができると共に、必要により後部窓９を開けて行う走行作業も能率よく行うことができる等の特徴がある。 Then, when it is desired to visually recognize the lower part of the rear part of the machine body, when the window opening / closing lever 14 is released and the rear window 9 is pushed backward and held at the set angle as described above, it is attached to the back surface of the display plate 10. Since the lower side of the traveling vehicle 1 can be projected from the rear with a predetermined angle by the mirror surface member 11, the operator can window the mirror image by a simple and easy operation of simply turning around while sitting in the driver's seat 5c. It can be visually recognized quickly and properly through the glass 8.
In other words, in order to confirm this point, the operator should take an unreasonable posture such as getting down to the ground and moving to the rear of the aircraft, or leaning over the driver's seat 5c with the rear window 9 wide open. It is possible to easily visually recognize the vehicle, to properly inspect and monitor the rear side of the traveling machine 2, and to efficiently perform the traveling work by opening the rear window 9 as necessary. There is a feature.

次に、図５,図６を参照し本発明の第２実施形態に係る表示板設置構造を説明する。
尚、前記実施形態のものと同様な構成及び作用については、同一符号を付して説明を省略する。
このアンダーミラー装置１２は、第１実施形態のものと同様に表示板１０の背面側に鏡面部材１１を備えており、後部窓９の下部側に対し表示板１０を図５に２点鎖線で示すように、窓ガラス８に沿う姿勢（走行姿勢）から視認姿勢変更機構２０を介し、実線で示すように後部窓９の後方側に突出させて位置決めをする後方突出視認姿勢等に切換可能に取付支持している。
上記視認姿勢変更機構２０は、上下方向の取付軸（縦軸）２１を介して表示板１０を周方向に角度切換え自在に取付けることにより、表示板１０を後部窓９の後方に突出支持する後方突出視認姿勢や左右及び前後方向への姿勢切換えを可能にし、この姿勢切換位置で鏡面部材１１に映る各鏡像を選択自在にする表示板設置構造にしている。 Next, the display board installation structure according to the second embodiment of the present invention will be described with reference to FIGS. 5 and 6.
The same configurations and operations as those of the above-described embodiment are designated by the same reference numerals and the description thereof will be omitted.
The under mirror device 12 is provided with a mirror surface member 11 on the back side of the display plate 10 as in the first embodiment, and the display plate 10 is attached to the lower side of the rear window 9 with a two-dot chain line in FIG. As shown, it is possible to switch from the posture along the window glass 8 (running posture) to the rear protruding visual posture or the like, which is positioned by projecting to the rear side of the rear window 9 as shown by the solid line via the visual posture changing mechanism 20. Supports mounting.
The visual posture changing mechanism 20 projects and supports the display plate 10 behind the rear window 9 by mounting the display plate 10 in the circumferential direction via a vertical mounting shaft (vertical axis) 21 so that the angle can be freely switched. It has a display board installation structure that enables the protruding visual posture and the posture switching in the left-right and front-back directions, and allows each mirror image reflected on the mirror surface member 11 to be freely selected at this posture switching position.

即ち、図示例の視認姿勢変更機構２０は、前記窓開閉レバー１４の軸取付機構１５に設けられる取付板部材１５ｃ側に締結固定されるブラケット２２と、該ブラケット２２に突設される取付軸２１に回動自在に挿入した状態で位置決めされるホルダ２５と、該ホルダ２５に上下又は縦方向にスライド調節可能に取付けられ且つ下端部（視認方向側端部）に横軸２６を介して上下方向に回動調節自在な表示板取付部材２７を有する調節支持部材２８等からなる。
一方、表示板１０は、視認姿勢変更機構２０の上記表示板取付部材２７に挿入されて回動自在に軸支される縦回動軸としての取付支持軸４０を突設していると共に、取付支持軸４０の近傍に回動操作用の取手４１を突設している。 That is, the visual posture changing mechanism 20 of the illustrated example has a bracket 22 fastened and fixed to the mounting plate member 15c side provided on the shaft mounting mechanism 15 of the window opening / closing lever 14, and a mounting shaft 21 projecting from the bracket 22. A holder 25 that is positioned in a state where it is rotatably inserted into the holder 25, and is attached to the holder 25 so as to be slidable in the vertical or vertical direction, and is attached to the lower end portion (the end portion in the viewing direction) in the vertical direction via a horizontal axis 26. It is composed of an adjustment support member 28 or the like having a display plate mounting member 27 that can be freely rotated and adjusted.
On the other hand, the display plate 10 projects a mounting support shaft 40 as a vertical rotation shaft that is inserted into the display board mounting member 27 of the visual posture changing mechanism 20 and is rotatably supported, and is mounted. A handle 41 for rotation operation is provided in the vicinity of the support shaft 40.

上記構成によるアンダーミラー装置１２は、図６に示す後方突出視認姿勢から取付軸２１を支点に側方回動し図５に２点鎖線で示す走行姿勢となし、且つ後部窓９を図１,図２のように閉鎖した状態において、表示板１０は低速走行車であることを認知させることができる。
そして、作業機連結部７の基部側の視認を行う場合には、オペレータは窓開閉レバー１４を係合解除操作し後面側フレーム６ｄから係合片１４ｂを離脱したのち、後方に向けて押動して後部窓９を半開状態にする。
次いで、半開状の開口隙間に手を差し入れ、取手４１又は表示板１０を持って視認姿勢変更機構２０を介し表示板１０を２点鎖線の走行姿勢から実線位置に反転操作した視認姿勢に切換えると共に、窓開閉レバー１４を押動して図５に示すように設定開動角をなす下り傾斜姿勢に位置決めをする。 The under mirror device 12 having the above configuration rotates laterally with the mounting shaft 21 as a fulcrum from the rearward protruding visual posture shown in FIG. 6, and has no traveling posture shown by the two-dot chain line in FIG. In the closed state as shown in FIG. 2, the display board 10 can be recognized as a low-speed traveling vehicle.
Then, when visually recognizing the base side of the work equipment connecting portion 7, the operator disengages the window opening / closing lever 14, disengages the engaging piece 14b from the rear surface side frame 6d, and then pushes it backward. Then, the rear window 9 is half-opened.
Next, a hand is inserted into the half-open opening gap, and the display plate 10 is switched from the running posture of the two-dot chain line to the solid line position via the visual recognition posture changing mechanism 20 by holding the handle 41 or the display plate 10 and switching to the visual posture. , The window opening / closing lever 14 is pushed to position the window opening / closing lever 14 in a downward tilting posture having a set opening angle as shown in FIG.

これにより表示板１０は、視認姿勢変更機構２０を介し後部窓９の窓ガラス８に沿わせて設けられる表示姿勢、つまり鏡面部材１１を後部窓９の窓ガラス８に沿わせ前記走行姿勢にして取付ける設置姿勢から、窓ガラス８に沿って上下又は左右方向に取付け移動可能に設置することができるので、鏡面部材１１を後部窓９の下部側から突出した下向き状態で左右と上下の角度を調節して位置決めすること、及び所望位置に取付け移動させた移動姿勢に切換えることができるため、鏡面部材１１に映し出される鏡像の選択を容易にすることができる。
従って、オペレータは運転部から離間した位置で、鏡面部材を左右又は上下に移動させた移動姿勢で映る鏡像を多様且つ容易に視認できるため、鏡面部材を介して所要部の点検並びに監視等を能率よく適切に行うことができる等の特徴がある。
尚、視認姿勢変更機構２０は図示例の方式に限定することなく、後部窓９に対し表示板１０を上下移動させるスライド機構又はリンク機構又はフレキシブルな自在継手構造等によって構成してもよい。 As a result, the display plate 10 is set to the display posture provided along the window glass 8 of the rear window 9 via the visual observation posture changing mechanism 20, that is, the mirror surface member 11 is set to the traveling posture along the window glass 8 of the rear window 9. Since it can be mounted and moved in the vertical or horizontal direction along the window glass 8 from the mounting posture, the mirror surface member 11 can be adjusted in the horizontal and vertical angles in a downward state protruding from the lower side of the rear window 9. Since it is possible to position the mirror image and switch to a moving posture in which the mirror image is mounted and moved to a desired position, it is possible to easily select a mirror image projected on the mirror surface member 11.
Therefore, since the operator can easily and variously visually recognize the mirror image reflected in the moving posture in which the mirror surface member is moved left and right or up and down at a position away from the driving unit, the inspection and monitoring of the required part can be efficiently performed through the mirror surface member. There are features such as being able to do it well and appropriately.
The visual posture changing mechanism 20 is not limited to the method shown in the illustrated example, and may be configured by a slide mechanism or a link mechanism for moving the display plate 10 up and down with respect to the rear window 9, a flexible universal joint structure, or the like.

また窓ガラス８に沿って固定状態の表示板１０に対し、該表示板１０の下部に適宜構造の視認姿勢変更機構２０を介して鏡面部材１１を単独移動自在に設置してもよく、この場合には表示板１０を走行姿勢に固定したまま移動可能型の鏡面部材１１によって下方視認をすることができると共に、必要により表示板１０側に設置した鏡面部材１１による下方視認を行うことができる等の利点がある。
さらに、上記鏡面部材１１は凸面鏡にする場合には、オペレータは運転部３からより広範囲に映し出される鏡像を視認することができる。また後部窓９には、窓ガラス８の下部側の全幅面に対し帯状の鏡体面４２又は該鏡体面４２の左右幅中央部に三角形状の鏡体面を形成する鏡面手段を付設してもよく、この場合には帯状鏡面部を介して視認範囲の幅を拡大することができる等の利点がある。 Further, the mirror surface member 11 may be independently movablely installed under the display plate 10 in a fixed state along the window glass 8 via a visual posture changing mechanism 20 having an appropriate structure. The downward visual recognition can be performed by the movable mirror surface member 11 while the display plate 10 is fixed to the traveling posture, and the downward visual recognition can be performed by the mirror surface member 11 installed on the display plate 10 side if necessary. There are advantages of.
Further, when the mirror surface member 11 is a convex mirror, the operator can visually recognize the mirror image projected from the driving unit 3 in a wider range. Further, the rear window 9 may be provided with a band-shaped mirror body surface 42 with respect to the entire width surface on the lower side of the window glass 8 or a mirror surface means for forming a triangular mirror body surface at the center of the left and right width of the mirror body surface 42. In this case, there is an advantage that the width of the viewing range can be expanded via the band-shaped mirror surface portion.

１ トラクタ（走行車両）
５ 運転部
５ｃ 運転席
６ｋ 後部開口
７ 作業機連結部
８ ガラス部
９ 後部窓
１０ 表示板
１１ 鏡面部材
１３ ヒンジ 1 Tractor (traveling vehicle)
5 Driver 5c Driver's seat 6k Rear opening 7 Work equipment connection 8 Glass 9 Rear window 10 Display plate 11 Mirror member 13 Hinge

Claims (2)

運転部（５）を覆うキャビン（６）の後部開口（６ｋ）に、ヒンジ（１３）を介し上部を支点に下部側を後方に向けて開動させる後部窓（９）を設け、該後部窓（９）の下部側に対し低速走行車両であることを表示する表示板（１０）を窓ガラス（８）の後側面に沿わせて設ける走行車両において、
前記表示板（１０）の背面側に鏡面部材（１１）を設けると共に、後部窓（９）を後方に開動し停止させた開動停止姿勢にしたとき、運転部（５）側に居るオペレータが鏡面部材（１１）に映る走行車両（１）の下部側の鏡像を視認可能に構成することを特徴とする走行車両。 A rear window (9) is provided in the rear opening (6k) of the cabin (6) that covers the driving unit (5) so as to open the rear window (9) with the upper part as a fulcrum and the lower side toward the rear via a hinge (13). In a traveling vehicle in which a display plate (10) indicating that the vehicle is a low-speed traveling vehicle is provided along the rear side surface of the window glass (8) with respect to the lower side of 9).
When the mirror surface member (11) is provided on the back side of the display plate (10) and the rear window (9) is opened and stopped rearward, the operator on the driving unit (5) side is mirrored. A traveling vehicle characterized in that a mirror image on the lower side of the traveling vehicle (1) reflected on the member (11) is visible. 前記前記鏡面部材（１１）を、後部窓（９）の窓ガラス（８）に沿わせて取付ける設置姿勢から、窓ガラス（８）に沿って上下又は左右方向に移動可能に構成する請求項１記載の走行車両。 Claim 1 is configured such that the mirror surface member (11) can be moved up and down or left and right along the window glass (8) from an installation posture in which the mirror surface member (11) is attached along the window glass (8) of the rear window (9). The listed traveling vehicle.

Images