JP2010280333A

JP2010280333A - Working vehicle

Info

Publication number: JP2010280333A
Application number: JP2009136473A
Authority: JP
Inventors: Hidetomo Watabe; 英知渡部; Shinji Kato; 慎士加藤; Masaru Abe; 勝安部
Original assignee: Mitsubishi Agricultural Machinery Co Ltd
Current assignee: Mitsubishi Agricultural Machinery Co Ltd
Priority date: 2009-06-05
Filing date: 2009-06-05
Publication date: 2010-12-16

Abstract

<P>PROBLEM TO BE SOLVED: To restrict an intake area of outside air by fixing a frame body made of synthetic resin at a front face of a bonnet hood and attaching a net member thereto. <P>SOLUTION: An upper edge 21a of a net member 21 comprised of punching metal is attached onto a front edge 20c of a body 20 of the bonnet hood 11. A lower edge 21b of the net member is attached onto the hood body 20 through a connection member 22 of an L shape in cross section. The front face of the bonnet hood 11 is comprised of the net member 21 over substantially the whole surface. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、トラクタ等の作業車輌に係り、詳しくは走行機体前部に配置されるボンネット装置に関する。 The present invention relates to a working vehicle such as a tractor, and more particularly to a bonnet device disposed at a front portion of a traveling machine body.

一般に、作業車輌は、走行機体の前部にエンジンが配置され、更にその前方にラジエータ等の補機が配置されており、これらエンジン及びラジエータ等を覆うようにボンネット装置が配設されている。ボンネット装置は、前部を覆うフロントグリル、左右の側面を覆う左右サイドカバー及び上部を覆うボンネットフードからなり、ボンネットフードの前部及び左右サイドカバーには、ラジエータの冷却風の通路となるように、多数の通気孔を有するネット状部材が設けられている（例えば特許文献１）。 In general, a working vehicle has an engine disposed at the front of a traveling machine body, and an auxiliary device such as a radiator is disposed in front of the working vehicle, and a bonnet device is disposed to cover the engine and the radiator. The bonnet device consists of a front grill that covers the front, left and right side covers that cover the left and right sides, and a bonnet hood that covers the top, and the front and left and right side covers of the bonnet hood provide a passage for the cooling air of the radiator. A net-like member having a large number of ventilation holes is provided (for example, Patent Document 1).

従来のボンネットフード１１１は、図８に示すように、後方を枢支軸として開閉自在に支持されるフード本体１１２と、フード本体に固定される合成樹脂製の枠体１１３と、該枠体１１３に固定されるパンチングメタルからなるネット部材１１５と、からなる。枠体１１３は、左右に開口１１３ａ，１１３ａを有しており、フード本体１１２の前縁部１１２ａにボルト及びナットにより固定される。 As shown in FIG. 8, the conventional hood hood 111 includes a hood main body 112 that is supported so as to be openable and closable with the rear as a pivot shaft, a synthetic resin frame 113 fixed to the hood main body, and the frame 113. And a net member 115 made of a punching metal fixed to. The frame body 113 has openings 113a and 113a on the left and right sides, and is fixed to the front edge portion 112a of the hood main body 112 with bolts and nuts.

特開２００５−３４３２２０号公報JP 2005-343220 A

上記従来のボンネットフード１１１は、閉じた状態において、前面に開口する枠体１１３の開口１１３ａ，１１３ａからネット部材１１５を通して外気をボンネット装置内（エンジンルーム）に導き、ラジエータを冷却している。上記ボンネットフード１１１の前面は、枠体により開口部面積が制限され、充分な外気をエンジンルーム内に導入することができない。 In the closed state, the conventional bonnet hood 111 guides outside air through the net member 115 from the openings 113a and 113a of the frame body 113 that opens to the front, and cools the radiator. The front surface of the hood hood 111 has an opening area limited by the frame, and sufficient outside air cannot be introduced into the engine room.

そこで、本発明は、ボンネットフード前面の上記枠体をなくし、かつ充分な強度を有するボンネットフードを備えた作業車輌を提供することを目的とするものである。 Accordingly, an object of the present invention is to provide a working vehicle provided with a bonnet hood having a sufficient strength without the above-mentioned frame on the front surface of the bonnet hood.

本発明は、走行機体（５）の前部にエンジンを配設し、かつその上部を覆うボンネットフード（１１）を備えた作業車輌（１）において、
前記ボンネットフード（１１）は、後部を固定部材（１５）に回動自在に支持されたフード本体（２０）と、全面に亘り多数の貫通孔（２１ｅ）が形成されているネット部材（２１）と、前記フード本体（２０）の前方下部の両端に亘って連結された連結部材（２２）と、を有し、
前記ネット部材（２１）は、その上縁部（２１ａ）が前記フード本体の前縁部（２０ｃ，２５）に固定されると共に、その下縁部（２１ｂ）が前記連結部材（２２）に固定されて、前記ボンネットフードの前面部（１１Ｆ）を形成することを特徴とする。 The present invention provides a working vehicle (1) provided with a hood hood (11) having an engine disposed at a front portion of a traveling machine body (5) and covering an upper portion thereof.
The hood hood (11) has a hood body (20) whose rear portion is rotatably supported by a fixing member (15), and a net member (21) in which a large number of through holes (21e) are formed over the entire surface. And a connecting member (22) connected across both ends of the front lower part of the hood body (20),
The net member (21) has an upper edge (21a) fixed to the front edge (20c, 25) of the hood body and a lower edge (21b) fixed to the connecting member (22). And forming a front surface portion (11F) of the bonnet hood.

前記連結部材（２２）は、断面Ｌ字状からなり、その平坦面（２２ａ）に前記ネット部材（２１）を固定すると共に、その立上り面（２２ｂ）が、前記ネット部材の端面（ｃ）を囲むように前記ボンネットフードの内側に位置してなる。 The connecting member (22) has an L-shaped cross section, fixes the net member (21) to the flat surface (22a), and the rising surface (22b) serves as an end surface (c) of the net member. It is located inside the hood so as to surround it.

前記ネット部材（２１）が、パンチングメタルからなる。 The net member (21) is made of a punching metal.

なお、上記カッコ内の符号は、図面と対照するためのものであるが、これにより特許請求の範囲の記載に何等影響を及ぼすものではない。 In addition, although the code | symbol in the said parenthesis is for contrast with drawing, it does not have any influence on description of a claim by this.

請求項１に係る本発明によると、ボンネットフードの前面部を略々全面に亘ってネット部材で形成したので、エンジンルーム内への外気の取込み面積を大きくして、エンジンの冷却効率を向上することができる。また、従来必要であった合成樹脂製の枠体を不要としてコストダウンを図ることができるものでありながら、ネット部材の下縁部は、フード本体の前方下部の両端に亘って連結される連結部材に固定されるので、十分な剛性を確保することができる。 According to the first aspect of the present invention, since the front part of the bonnet hood is formed by the net member over substantially the entire surface, the area for taking in outside air into the engine room is increased and the cooling efficiency of the engine is improved. be able to. In addition, the lower edge portion of the net member is connected across both ends of the front lower portion of the hood body, while the cost can be reduced by eliminating the need for a synthetic resin frame that has been conventionally required. Since it is fixed to the member, sufficient rigidity can be ensured.

請求項２に係る本発明によると、連結部材は断面Ｌ字状からなり、その立上り面にてネット部材の端面を覆うので、ボンネットフードの開閉に際して、ネット部材の端面（切断面）にて手を傷付ける等の不具合はなく、かつ外力を加えても、ネット部材の形状を安定して保持することができる。 According to the second aspect of the present invention, since the connecting member has an L-shaped cross section and covers the end surface of the net member at its rising surface, the end surface (cut surface) of the net member is manually opened and closed when the bonnet hood is opened and closed. The net member can be stably held in shape even when an external force is applied.

請求項３に係る本発明によると、ネット部材は、パンチングメタルからなるので、衝撃等に対して柔軟に対応でき、かつ安価に製造することができる。 According to the third aspect of the present invention, since the net member is made of a punching metal, it can flexibly cope with an impact or the like and can be manufactured at a low cost.

本発明を適用し得る作業車輌であるトラクタを示す斜視図。The perspective view which shows the tractor which is a working vehicle which can apply this invention. そのボンネット装置を示す斜視図。The perspective view which shows the bonnet apparatus. ボンネット装置の開いた状態を示す図で、（ａ）は正面図、（ｂ）は側面図。It is a figure which shows the state which the bonnet apparatus opened, (a) is a front view, (b) is a side view. ボンネットフードを示す図で、（ａ）は正面図、（ｂ）は平面図、（ｃ）は側面図。It is a figure which shows a bonnet food | hood, (a) is a front view, (b) is a top view, (c) is a side view. ボンネットフードの分解斜視図。The disassembled perspective view of a bonnet hood. 図４（ａ）のＡ−Ａ矢視断面によるボンネットフードの断面図。Sectional drawing of the bonnet hood by the AA arrow cross section of Fig.4 (a). 図４（ｂ）のＢ−Ｂ矢視断面によるボンネットフードの断面図。Sectional drawing of the bonnet hood by the BB arrow cross section of FIG.4 (b). 従来のボンネットフードを示す分解斜視図。The disassembled perspective view which shows the conventional bonnet hood.

以下、図面に沿って、本発明の実施の形態について説明する。トラクタ１は、図１に示すように、前輪２及び後輪３により支持される走行機体５を有しており、走行機体５はエンジン、クラッチハウジング、トランスミッションケースを一体に結合して構成され、エンジンの前方にその補機であるラジエータが搭載され、かつその後部には運転席を囲うようにキャビン６が載置されている。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. As shown in FIG. 1, the tractor 1 has a traveling machine body 5 supported by the front wheels 2 and the rear wheels 3. The traveling machine body 5 is configured by integrally combining an engine, a clutch housing, and a transmission case. A radiator, which is an auxiliary machine, is mounted in front of the engine, and a cabin 6 is mounted behind the engine so as to surround the driver's seat.

前記走行機体５の前部には、図２及び図３に示すように、上記エンジン等を囲うようにボンネット装置７が配置され、該ボンネット装置７は、上記エンジン等の前部を覆うフロントグリル９と、その左右側面を覆う左右サイドカバー１０，１０と、その上部を覆うボンネットフード１１とからなる。ボンネットフード１１は、後支持枠１５に枢支されて開閉自在になっている。フロントグリル９は上部が前照灯１６となっており、下部に通気用の複数の開口１７が形成されている。左右のサイドカバー１０にはパンチングメタルからなるネット部材１９が設けられている。フロントグリル９及び左右のサイドカバー１０は走行機体５と一体の固定部材に対して着脱自在に取付けられている。 As shown in FIGS. 2 and 3, a bonnet device 7 is disposed at the front of the traveling machine body 5 so as to surround the engine and the like, and the bonnet device 7 covers a front grille covering the front of the engine and the like. 9, left and right side covers 10, 10 covering the left and right side surfaces, and a hood hood 11 covering the upper part thereof. The bonnet hood 11 is pivotally supported by the rear support frame 15 and can be opened and closed. The front grill 9 has a headlamp 16 at the top and a plurality of openings 17 for ventilation at the bottom. The left and right side covers 10 are provided with net members 19 made of punching metal. The front grille 9 and the left and right side covers 10 are detachably attached to a fixed member integral with the traveling machine body 5.

ボンネットフード１１は、図４及び図５に示すように、前記後支持枠に回転自在に連結されたフード本体２０と、全面に亘り多数の貫通孔２１ｅが形成されているネット部材２１と、断面Ｌ字状の金属板からなる連結部材２２と、を有する。フード本体２０は、横断面で浅いコ字状になるように、上面２０ａ及び両側面２０ｂ，２０ｂを有しており、かつ前面にあっては上記側面を省いたような切欠き様の前縁部２０ｃになっている。ネット部材２１は、パンチングメタルからなり、上縁部に複数個所の取付け用ラグ２１ａが形成されていると共に、下縁部２１ｂは内方に折込まれており（図６参照）、かつ前面部分２１ｃは、従来の合成樹脂製枠体１１３（図８参照）と同様な形状となるように凹凸形状が形成されている。即ち図４に示すように、前面部分２１ｃの中央部分は、例えば会社ロゴからなるエンブレムが取付けれられる凸状平坦面ａになっており、その左右部分の開口１１３ａに対応する部分が凹形状ｂとなっている。 As shown in FIGS. 4 and 5, the bonnet hood 11 includes a hood body 20 rotatably connected to the rear support frame, a net member 21 in which a large number of through holes 21e are formed over the entire surface, and a cross section. And a connecting member 22 made of an L-shaped metal plate. The hood main body 20 has an upper surface 20a and both side surfaces 20b, 20b so as to have a shallow U-shape in cross section, and the front edge of the notch-like shape in which the side surface is omitted on the front surface. It is part 20c. The net member 21 is made of a punching metal, has a plurality of mounting lugs 21a formed at the upper edge portion, and the lower edge portion 21b is folded inward (see FIG. 6), and the front portion 21c. Is formed with a concavo-convex shape so as to have the same shape as the conventional synthetic resin frame 113 (see FIG. 8). That is, as shown in FIG. 4, the central portion of the front portion 21c is a convex flat surface a to which an emblem made of a company logo, for example, is attached, and the portions corresponding to the openings 113a on the left and right portions are concave b It has become.

連結部材２２は、平面視逆コ字状からなり、図６に示すように、断面Ｌ字状の一面である（水平）平坦面２２ａにネット部材２１の折込み下縁部２１ｂがリベット２３により複数個所にて固定されており、上記ネット部材２１の下縁部２１ｂの端面ｃは、連結部材２２の立上り面２２ｂで囲われている。図６に示すように、フード本体２０の内方に折込まれた前縁部２０ｃにはプレート２５が溶着されており、該前縁部となるプレート２５にネット部材２１の上縁部取付け用ラグ２１ａがクリップナット２６及びボルト２９により挟まれて固定される。クリップナット２６は、Ｕ字状に折畳まれた金属片からなるクリップ部２６ａと、該クリップ部の一面に固着されたナット又は膨出鍔部に形成された雄ネジからなるナット部２６ｂとからなり、上記クリップ部２６ａを前縁部であるプレート２５に挟み込み、該クリップ部の下面に取付け用ラグ２１ａを重ねて、ボルト２９をナット部２６ｂに締付けることにより、フード本体の前縁部２０ｃにネット部材２１の上縁部２１ａが一体に固定される。 As shown in FIG. 6, the connecting member 22 has an inverted U-shape in plan view. As shown in FIG. The end surface c of the lower edge portion 21 b of the net member 21 is surrounded by the rising surface 22 b of the connecting member 22. As shown in FIG. 6, a plate 25 is welded to the front edge 20c folded inward of the hood body 20, and the upper edge mounting lug of the net member 21 is attached to the plate 25 serving as the front edge. 21 a is sandwiched and fixed by the clip nut 26 and the bolt 29. The clip nut 26 includes a clip portion 26a made of a metal piece folded in a U-shape, and a nut portion 26b made of a nut fixed to one surface of the clip portion or a male screw formed on the bulging flange portion. The clip portion 26a is sandwiched between the plate 25, which is the front edge portion, the mounting lug 21a is overlapped on the lower surface of the clip portion, and the bolt 29 is tightened to the nut portion 26b, whereby the front edge portion 20c of the hood body is secured. The upper edge portion 21a of the net member 21 is fixed integrally.

前記ネット部材２１の下縁部２１ｂに一体に固定された連結部材２２の左右両端部分２２ｄが、図７に示すようにクリップナット３０によりフード本体２０の両側面２０ｂに固定される。フード本体２０の周縁は内方に折込まれており、該折込まれた鍔部２０ｄに、クリップナットのクリップ３０ａを挟込み、その下面に連結部材２２の端部２２ｄの平坦面２２ａを当接して、ボルト３１をナット部３０ｂに締付けることにより、連結部材２２がフード本体２０に一体に固定される。 The left and right end portions 22d of the connecting member 22 integrally fixed to the lower edge portion 21b of the net member 21 are fixed to both side surfaces 20b of the hood body 20 by clip nuts 30 as shown in FIG. The peripheral edge of the hood main body 20 is folded inward, and the clip nut 30a is sandwiched between the folded flange portion 20d, and the flat surface 22a of the end portion 22d of the connecting member 22 is brought into contact with the lower surface thereof. The connecting member 22 is integrally fixed to the hood body 20 by tightening the bolt 31 to the nut portion 30b.

これにより、ネット部材２１は、その上縁部ラグ２１ａがフード本体前縁部２０ｃに固定され、その下縁部２１ｂが連結部材２２を介してフード本体２０に固定され、従来のような合成樹脂製の枠体のない状態で、ネット部材２１がフード本体２０の前面部１１Ｆを構成する。従って、図６に示すように、ボンネットフード１１の前面部１１Ｆは、略々全面が開口部Ｆとなり、大きな面積にて外気をボンネット装置内のエンジンルームに取り込むことができる。 Thereby, the net member 21 has its upper edge lug 21a fixed to the hood main body front edge 20c, and its lower edge 21b fixed to the hood main body 20 via the connecting member 22, so that a synthetic resin as in the prior art is used. The net member 21 forms the front surface portion 11F of the hood main body 20 in a state where there is no made frame. Accordingly, as shown in FIG. 6, the front surface portion 11F of the bonnet hood 11 has substantially the entire surface as the opening F, so that outside air can be taken into the engine room in the bonnet device in a large area.

また、ネット部材２１の下縁部は、断面Ｌ字状の連結部材２２を介してフード本体２０に取付けられるので、ネット部材２１の剛性を確保でき、ボンネットフード１１の開閉に際して外力が作用しても、ネット部材２１を含むボンネットフード１１の形状を安定して保持することができる。更に、ネット部材２１の下縁部２１ｂの端面ｃは、連結部材２２の立上り面２２ｂで覆われているので、ボンネットフード１１の開閉に際して、ボンネットフードの前方下端面となる連結部材２２を手で支えることになるが、この際、切断面となる上記ネット部材の端面ｃで手を傷つけることを防止できる。 Moreover, since the lower edge part of the net member 21 is attached to the hood main body 20 via the connecting member 22 having an L-shaped cross section, the rigidity of the net member 21 can be secured, and an external force is applied when the hood hood 11 is opened and closed. In addition, the shape of the hood hood 11 including the net member 21 can be stably held. Furthermore, since the end surface c of the lower edge portion 21b of the net member 21 is covered with the rising surface 22b of the connecting member 22, when the bonnet hood 11 is opened and closed, the connecting member 22 serving as the front lower end surface of the bonnet hood is manually held. At this time, it is possible to prevent the hand from being hurt at the end face c of the net member as a cut surface.

なお、上記実施の形態は、作業車輌としてトラクタのボンネット装置について説明したが、これに限らず、田植機等の他の作業車輌にも同様に適用可能である。 In addition, although the said embodiment demonstrated the bonnet apparatus of the tractor as a working vehicle, it is applicable not only to this but other working vehicles, such as a rice transplanter.

１作業車輌（トラクタ）
５走行機体
７ボンネット装置
１１ボンネットフード
１１Ｆ前面部
２０フード本体
２０ｃ前縁部
２１ネット部材
２１ａ上縁部（取付け用ラグ）
２１ｂ下縁部
２１ｅ貫通孔
２２連結部材
２２ａ平坦面
２２ｂ立上り面
２５前縁部（プレート）
ｃ端面 1 Working vehicle (tractor)
5 traveling machine body 7 bonnet device 11 bonnet hood 11F front surface portion 20 hood main body 20c front edge portion 21 net member 21a upper edge portion (attachment lug)
21b Lower edge portion 21e Through hole 22 Connecting member 22a Flat surface 22b Rising surface 25 Front edge portion (plate)
c End face

Claims

In a working vehicle provided with an engine at the front part of the traveling machine body and provided with a bonnet hood covering the upper part thereof,
The bonnet hood is connected across the hood main body, the rear part of which is rotatably supported by a fixed member, the net member having a large number of through holes formed on the entire surface, and both ends of the front lower part of the hood main body. A connecting member,
The net member has an upper edge fixed to the front edge of the hood main body and a lower edge fixed to the connecting member to form a front surface of the bonnet hood.
A working vehicle characterized by that.

The connecting member has an L-shaped cross section, and fixes the net member to a flat surface thereof, and the rising surface is located inside the bonnet hood so as to surround the end surface of the net member.
The working vehicle according to claim 1.

The working vehicle according to claim 1, wherein the net member is made of a punching metal.