JP4120281B2 - Brush support device for cleaning machine - Google Patents

Brush support device for cleaning machine Download PDF

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Publication number
JP4120281B2
JP4120281B2 JP2002170994A JP2002170994A JP4120281B2 JP 4120281 B2 JP4120281 B2 JP 4120281B2 JP 2002170994 A JP2002170994 A JP 2002170994A JP 2002170994 A JP2002170994 A JP 2002170994A JP 4120281 B2 JP4120281 B2 JP 4120281B2
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Japan
Prior art keywords
brush
load
lever
connecting member
pressure
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JP2002170994A
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Japanese (ja)
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JP2004019098A (en
Inventor
久明 筧
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Howa Machinery Ltd
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Howa Machinery Ltd
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Description

【0001】
【発明の属する技術分野】
この発明は、清掃面に接地したブラシが清掃面の凹凸に追従可能であり、清掃面の凹凸や塵埃の量によりブラシの接地荷重を調整可能な清掃機のブラシ支持装置に関する。
【0002】
【従来の技術】
従来の清掃機のブラシ支持装置として、特開平10−195836号に開示のものがある。これは、車体にブラシ揺動アームにより上下揺動可能に支持してある掃上ブラシを吊上げ位置と接地位置とに上下方向に移動するブラシ昇降レバーと、ブラシの接地荷重調整用の荷重切換レバーとを夫々備えている。ブラシ揺動アームには、ロッドの一端が揺動自在に連結されており、ロッドの他端にレバーの一端が揺動可能に連結さている。レバーは、他端が車体に揺動自在に設けられており、また、レバーには、一端が車体に掛け止められたブラシ吊上げ用バネの他端が掛け止めされている。また、レバーは、リンク部材を介してブラシ昇降レバーに連結されている。荷重切換レバーはレバーの他端と同軸にピン連結されており、レバー一端部上面を押圧可能な押圧部が形成されている。また、荷重切換レバーには一端が車体に掛け止めされた加圧用バネの他端が掛け止めされている。加圧用バネは、ブラシ吊上げ用バネより大きな弾性力を有している。重清掃時には、加圧用バネにより、荷重切換レバーがレバーとロッドとブラシ揺動アームを介してブラシの接地荷重を増加している。また、通常清掃時には、ブラシに加圧用バネの弾性力が作用しない状態に荷重切換レバーを位置させる荷重切換レバー用係止部材に係止している。また、ブラシを吊上げる際には、荷重切換レバーを荷重切換レバー用係止部材に係止し、ブラシ昇降レバーをブラシ昇降レバー用係止部材に引き上げて係止しブラシを吊上げている。
【0003】
【発明が解決しようとする課題】
前記従来のものでは、ブラシ昇降レバーによりブラシを昇降し、清掃時のブラシ接地荷重の切換は荷重切換レバーを操作して行うので、構造、操作が複雑である問題があった。また、構造が複雑であるので、部品の種類が増え、製造コストが高くなる問題があった。更に、ブラシを格納する時、荷重切換レバーを荷重切換レバー用係止部材に係止しない状態で、ブラシ昇降レバーによりブラシを吊上げる場合、ブラシ重量とブラシへの加圧荷重に抗してブラシ昇降レバーを操作しなければならず、ブラシ昇降レバーの操作力を大きくしていた。
本願の課題は、ブラシの昇降操作及び接地荷重の調整が簡単に行え、ブラシ昇降操作時の操作力が小さく、構造が簡単で安価な清掃機のブラシ支持装置を提供することである。
【0004】
【課題を解決するための手段】
前記課題を解決するため、本願発明は、車体に対して上下方向に揺動可能なブラシ揺動アームにブラシを回転可能に支持し、ブラシ揺動アームを連結部材を介してブラシ昇降レバーに連結し、ブラシ昇降レバーによりブラシを昇降させるブラシ支持装置において、ブラシ揺動アームとブラシ昇降レバーとを連結部材で長孔を介して連結し、ブラシ昇降レバーにブラシ引き上げ方向に荷重を作用させる減圧部材を設け、ブラシ揺動アームにブラシ押付け方向に荷重を作用させる加圧部材を設け、ブラシ昇降レバーを、連結部材を介して減圧部材の荷重をブラシ揺動アームにブラシ引き上げ方向に作用させた状態でブラシ揺動アームをブラシ引き上げ方向に揺動させてブラシをブラシ格納位置に上昇させる格納位置と、連結部材を減圧部材の荷重がブラシ揺動アームに作用しない位置に移動させてブラシ自重と加圧部材の荷重をブラシに作用させる加圧位置と、連結部材を介して減圧部材の荷重をブラシ揺動アームにブラシ引き上げ方向に作用させてブラシ自重と加圧部材による荷重より小さい荷重をブラシに作用させる中間位置とに位置させるレバーガイドを設け、ブラシ昇降レバーの操作によってブラシの昇降操作とブラシの接地荷重調整を行えるようにしたことを特徴とする(請求項1)。これによればブラシ昇降レバーの操作によって、ブラシの昇降操作とブラシの接地荷重の調整が行えるので、操作が容易であり、また、レバーが1つであるので構造が簡単で低コストとなる。
【0005】
また、本願発明は、ブラシに作用する減圧部材の荷重をブラシに作用する加圧部材の荷重より大きく設定し、ブラシに作用する両者の合力がブラシ引き上げ方向に作用してブラシがブラシ自重より小さい接地荷重で路面に接地するようにしたことを特徴とする(請求項2)。これによれば、ブラシを吊上げる方向に合力が作用するので、ブラシを格納するために昇降レバーを操作する時の操作力が小さくなり好ましい。
【0006】
また、本願発明は、連結部材をブラシ昇降レバーに格納位置調整機構を介して枢着し、格納位置調整機構の長さを調整することでブラシの格納位置高さを調整できるようにしたことを特徴とする(請求項3)。また、本願発明は、ブラシ揺動アームにブラシの接地荷重を調整可能な荷重調整用長孔を設け、その荷重調整用長孔に加圧部材を位置調整可能に取付けたことを特徴とする(請求項4)。これによれば、ブラシが摩耗して軽くなったとしても、接地荷重を調整できることで略一定の接地荷重で路面に接地することができる。
【0007】
【発明の実施の形態】
本願発明の実施の形態について図1〜図5に基づいて説明する。ブラシ支持装置1は、掃き上げブラシ2と、掃き上げブラシ2を上下方向揺動自在に支持する左右のブラシ揺動アーム3と、掃き上げブラシ2を上下方向に昇降させると共に掃き上げブラシ2の接地荷重を調整可能なブラシ昇降レバー4とから構成されている。清掃機の車体5には、車幅方向にアーム取付軸6が車体5に設けられた軸受7に軸支されており、アーム取付軸6の両端には、夫々ブラシ揺動アーム3の一端側の軸止部3aが取付けられ、ブラシ揺動アーム3がアーム取付軸6と一体に揺動可能となっている。この左右のブラシ揺動アーム3の他端には掃き上げブラシ2が回転可能に軸承されている。この掃き上げブラシ2は、ブラシ揺動アーム3の揺動により図1、図2の実線で示す格納位置P1と2点鎖線で示す接地位置P2とに上下方向移動可能になっている。
【0008】
また、ブラシ揺動アーム3の下側部分には、アーム取付軸6より掃き上げブラシ2側に加圧部材取付部分8が一体に設けられており、加圧部材取付部分8には荷重調整用長孔9が形成されている。この荷重調整用長孔9にはモーメント調整ボルト22が移動可能に挿通してあり、加圧部材取付部分8を挟んで反対側から図示しないナットを螺合して位置調整可能に固定されている。そのモーメント調整ボルト22に加圧部材として示す加圧用バネ10の一端が掛け止めされて、加圧用バネ10の一端位置が荷重調整用長孔9に沿って位置調整可能となっている。加圧用バネ10の他端は車体5のバネ掛け止め部11に掛け止めされている。加圧用バネ10は、引張りコイルバネであり、ブラシ揺動アーム3の一端側にブラシ押付方向の弾性力を作用させ、掃き上げブラシ2の接地荷重を増加する。
【0009】
ブラシ揺動アーム3の一端側先端部分には、連結ピン12が突設されており、この連結ピン12が連結部材13の一端に形成された長孔14に移動自在に嵌合されてブラシ揺動アーム3と連結部材13とが連結されている。連結部材13の他端は、格納位置調整機構15を介してブラシ昇降レバー4の一端側の枢着基部先端に枢着され、ブラシ昇降レバー4とブラシ揺動アーム3とを直結状態としている。格納位置調整機構15は、図3に示すように連結部材13に溶着された長さ調整ボルト23がロッドエンド24に螺合されており、長さ調整ボルト23とロッドエンド24との螺合長さを調整することで連結部材13の長孔14の上端位置が上下動し、長孔14の上端位置の移動に伴い長孔14に嵌まり込んだブラシ揺動アーム3一端の連結ピン12の高さ位置が変更され、ブラシ揺動アーム3の他端が揺動し、ブラシ2の格納位置高さが適当な位置に調整されるようになっている。長さ調整ボルト23とロッドエンド24との螺合長さの調整は、ロッドエンド24とブラシ昇降レバー4との枢着を取外して、ロッドエンド24を回転して行う。ブラシ昇降レバー4は、一端側の枢着基部で車体5に軸止された軸25に枢支されており、更に枢着基部先端には、減圧部材としてのガススプリング16の一端が回動可能に連結されている。ガススプリング16の他端は車体5に回動可能に設けられている。このガススプリング16は、後述のように、ブラシ昇降レバー4が中間位置A2にあるとき、ブラシ昇降レバー4と連結部材13とを介してブラシ揺動アーム3にブラシ引き上げ方向に荷重を作用させるようになっており、加圧用バネ10の弾性力より大きな荷重を常時下方に向けて作用させ、掃き上げブラシ2をその自重より軽い接地荷重で路面Rに接地させる。
【0010】
ブラシ昇降レバー4の他端は、運転席17で操作可能な位置にあり、車体5に設けたレバーガイド18にガイドされるようになっている。レバーガイド18は、図4に示すようにブラシ昇降レバー4を引き上げた格納位置A1に保持するレバー格納位置保持部19とブラシ昇降レバー4を押し下げた加圧位置A3に保持するレバー加圧位置保持部20が形成されており、レバー格納位置保持部19とレバー加圧位置保持部20とをつなぐガイド溝21の途中でブラシ昇降レバー4をフリー状態で中間位置A2に位置させる。
【0011】
路面R上の塵埃が少ない場合や、路面Rが略平坦なときの通常清掃の際には、運転席17で作業者はブラシ昇降レバー4をレバーガイド18の格納位置A1から外して中間位置A2にする。すると、連結部材13が上方に移動し、ブラシ格納位置の掃き上げブラシ2が接地位置に移動し、ガススプリング16の弾性力は、加圧用バネ10の弾性力より大きく設定されているので、ガススプリング16の荷重から加圧用バネ10の荷重を引いた合力で連結部材13の長孔14の上端が連結ピン12を下方に押すことで、ブラシ揺動アーム3他端に上向きの荷重が作用し、掃き上げブラシ2はブラシ自重より小さな接地荷重で路面Rに接地する。その状態で掃き上げブラシ2が回転し、路面R上の塵埃が掃き上げられて図示しない車体5に設けられたホッパーに投入回収される。
【0012】
路面R上に塵埃が多い場合や、路面Rの凹凸が激しいときには、更にブラシ昇降レバー4を押し下げて加圧位置A3にする。ブラシ昇降レバー4を加圧位置A3とすると、ブラシ昇降レバー4がレバー加圧位置保持部20に保持される。また、連結部材13が中間位置のときより上方移動し、長孔14上端と連結ピン12との圧接が解除され、図5に示すように連結ピン12は長孔14の中間位置に位置される。これにより、ガススプリング16の荷重が連結部材13を介してブラシ揺動アーム3に作用しなくなり、加圧用バネ10の荷重によりブラシ揺動アーム3の加圧部材取付部分8がバネ掛け止め部11側に引寄せられてブラシ揺動アーム3の他端側を押し下げ、ブラシ揺動アーム3他端の掃き上げブラシ2を押圧し、ブラシ自重に更に加圧用バネ10の荷重が加えられ、ブラシ自重より接地荷重が増加された荷重で路面Rに接地し、路面R上の塵埃を掃き上げることができる。
【0013】
清掃作業を終了し、掃き上げブラシ2を接地位置P2からブラシ格納位置P1に吊上げる場合には、ブラシ昇降レバー4を格納位置A1に操作すると、連結部材13が下方移動して長孔14の上端が連結ピン12を下方に押圧し、ブラシ揺動アーム3の一端が下方移動することで他端が上方移動し、ブラシ2が上昇してブラシ格納位置P1に格納される。この時、ガススプリング16の荷重が掃き上げブラシ2を引き上げる方向に作用しているので、作業者がブラシ2を引き上げる操作力が小さくてすむ。また、清掃によって掃き上げブラシ2が摩耗し、ブラシ2の接地荷重が小さくなった場合には、図1、図2に示す荷重調整用長孔9上端に固定されたモーメント調整ボルト22を、荷重調整用長孔9の下端側に移動することで加圧用バネ10の一端位置のアーム取付軸からの距離が離れ、加圧用バネ10によるブラシ揺動アーム3へのモーメントが大きくなり、掃き上げブラシ2への押圧力を大きくするこで、掃き上げブラシ2の接地荷重を略一定とする。
【0014】
尚、連結部材13の一端に設けたリンク部材とブラシ揺動アーム3の一端とを連結しても良く、この場合、連結部材13とリンク部材とを連結したものがブラシ揺動アーム3とブラシ昇降レバー3とを直結する連結部材となる。また、加圧用バネ10の他端は、連結部材13に掛け止めしても良い。また、加圧部材として加圧用バネ10を用いたが、加圧部材は、ガススプリング(シリンダ)やウェートでも良く、ウェートを用いる場合には、例えばブラシ2を軸承する軸部材に設ける。勿論、減圧部材はバネ等であっても良い。
【0015】
【発明の効果】
以上のように本願発明によれば、ブラシ揺動アームとブラシ昇降レバーとを連結部材で長孔を介して連結し、ブラシ昇降レバーにブラシ引き上げ方向に荷重を作用させる減圧部材を設け、ブラシ揺動アームにブラシ押付け方向に荷重を作用させる加圧部材を設け、ブラシ昇降レバーを、連結部材を介して減圧部材の荷重をブラシ揺動アームにブラシ引き上げ方向に作用させた状態でブラシ揺動アームをブラシ引き上げ方向に揺動させてブラシをブラシ格納位置に上昇させる格納位置と、連結部材を減圧部材の荷重がブラシ揺動アームに作用しない位置に移動させてブラシ自重と加圧部材による荷重をブラシに作用させる加圧位置と、連結部材を介して減圧部材の荷重をブラシ揺動アームにブラシ引き上げ方向に作用させてブラシ自重と加圧部材の荷重より小さい荷重をブラシに作用させる中間位置とに位置させるレバーガイドを設け、ブラシ昇降レバーの操作によってブラシの昇降操作とブラシの接地荷重調整を行えるようにしたので、1つのブラシ昇降レバーで、ブラシ昇降操作とブラシ接地荷重の調整操作を容易に行え、かつ、構造を簡単にできて低コストにできる。また、本願発明によれば、ブラシに作用する減圧部材の荷重をブラシに作用する加圧部材の荷重より大きく設定し、ブラシに作用する両者の合力がブラシ引き上げ方向に作用してブラシ自重より小さな荷重でブラシを接地させるようにしたので、ブラシを格納する際に小さい操作力でブラシ昇降レバーを操作できる。また、本願発明によれば、連結部材をブラシ昇降レバーに格納位置調整機構を介して枢着し、格納位置調整機構の長さを調整することでブラシの格納位置高さを調整できるようにしたので、ブラシの格納位置高さを適当な位置に調整できる。また、本願発明によれば、ブラシ揺動アームにブラシの接地荷重を調整可能な荷重調整用長孔を設け、その荷重調整用長孔に加圧部材を位置調整可能に取付けたので、ブラシが摩耗して接地荷重が変化したとしても、略一定の接地荷重に調整することができる。
【図面の簡単な説明】
【図1】本願発明に係るブラシ支持装置の概略を示す側面図である。
【図2】ブラシの拡大側面図である。
【図3】図1のIII部拡大図である。
【図4】図1のIV視図である。
【図5】ブラシ昇降レバー加圧位置での状態を示す説明図である。
【符号の説明】
1 ブラシ支持装置
2 掃き上げブラシ
3 ブラシ揺動アーム
4 ブラシ昇降レバー
5 車体
9 荷重調整用長孔
10 加圧用バネ(加圧部材)
13 連結部材
16 ガススプリング(減圧部材)
18 レバーガイド
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a brush support device for a cleaning machine in which a brush grounded on a cleaning surface can follow the unevenness of the cleaning surface and the grounding load of the brush can be adjusted by the unevenness of the cleaning surface and the amount of dust.
[0002]
[Prior art]
A conventional brush support device for a cleaner is disclosed in Japanese Patent Laid-Open No. 10-195836. This includes a brush lift lever that moves the sweeping brush supported on the vehicle body by a brush swing arm so that it can swing up and down in the up and down direction, and a load switching lever for adjusting the ground contact load of the brush. And each. One end of a rod is swingably connected to the brush swing arm, and one end of a lever is swingably connected to the other end of the rod. The other end of the lever is swingably provided on the vehicle body, and the other end of the brush lifting spring with one end hooked on the vehicle body is hooked on the lever. Moreover, the lever is connected with the brush raising / lowering lever through the link member. The load switching lever is pin-connected coaxially with the other end of the lever, and a pressing portion capable of pressing the upper surface of one end of the lever is formed. Further, the other end of the pressurizing spring having one end hooked to the vehicle body is hooked to the load switching lever. The pressurizing spring has a larger elastic force than the brush lifting spring. During heavy cleaning, the load switching lever increases the ground contact load of the brush through the lever, the rod, and the brush swing arm by the pressurizing spring. Further, during normal cleaning, the load switching lever is locked to a load switching lever locking member that positions the load switching lever in a state where the elastic force of the pressure spring does not act on the brush. When lifting the brush, the load switching lever is locked to the load switching lever locking member, and the brush lifting lever is lifted to the brush lifting lever locking member to lift the brush.
[0003]
[Problems to be solved by the invention]
In the prior art, since the brush is lifted and lowered by the brush lifting lever, and the switching of the brush ground load during cleaning is performed by operating the load switching lever, there is a problem that the structure and operation are complicated. Further, since the structure is complicated, there are problems that the types of parts increase and the manufacturing cost increases. Further, when the brush is retracted, when the brush is lifted by the brush lifting lever without locking the load switching lever to the load switching lever locking member, the brush is resisted against the weight of the brush and the pressure applied to the brush. The lifting lever had to be operated, and the operating force of the brush lifting lever was increased.
The subject of this application is providing the brush support apparatus of the cleaner which can perform the raising / lowering operation of a brush and adjustment of a grounding load easily, the operation force at the time of brush raising / lowering operation is small, a structure is simple, and it is cheap.
[0004]
[Means for Solving the Problems]
In order to solve the above-mentioned problems , the present invention supports a brush rotatably on a brush swing arm that can swing in the vertical direction with respect to the vehicle body, and connects the brush swing arm to a brush lifting lever via a connecting member. In the brush support device that lifts and lowers the brush by the brush lifting lever, the pressure reducing member that connects the brush swinging arm and the brush lifting lever through a long hole with a connecting member and applies a load to the brush lifting lever in the brush lifting direction. A pressure member that applies a load to the brush swing arm in the brush pressing direction is provided, and the brush lift lever is connected to the brush swing arm via the connecting member in the brush pulling direction. a storage position to raise the brush to the brush storage position by swinging the brush swinging arm brush pulling direction in the load of the connecting member of the pressure reducing member A pressing position for applying a load of brush own weight and the pressure member to the brush is moved to the position not acting on the brush swinging arm, acts on the brush pulling direction a load to the brush swinging arm of the decompression member via a connecting member A lever guide that is positioned at the intermediate position where the brush applies its own weight and a load smaller than the load applied by the pressure member to the brush is provided so that the brush can be moved up and down and the brush grounding load adjusted by operating the brush lift lever. (Claim 1). According to this, since the lifting / lowering operation of the brush and the adjustment of the ground contact load of the brush can be adjusted by the operation of the brush lifting / lowering lever, the operation is easy and the structure is simple and the cost is low because there is one lever.
[0005]
In the present invention, the load of the pressure reducing member acting on the brush is set larger than the load of the pressure member acting on the brush, and the resultant force acting on the brush acts in the brush pulling direction so that the brush is smaller than the weight of the brush itself. The vehicle is grounded on the road surface by a ground load (claim 2). According to this, since the resultant force acts in the direction in which the brush is lifted, the operating force when operating the elevating lever to store the brush is reduced, which is preferable.
[0006]
In addition, the present invention is such that the connecting member is pivotally attached to the brush elevating lever via the storage position adjustment mechanism, and the height of the storage position adjustment mechanism can be adjusted to adjust the brush storage position height. It is characterized (Claim 3). The invention of the present application is characterized in that a long hole for load adjustment capable of adjusting the ground contact load of the brush is provided in the brush swing arm, and a pressure member is attached to the long hole for load adjustment so that the position can be adjusted ( Claim 4). According to this, even if the brush is worn and lightened, the ground load can be adjusted so that the ground can be grounded with a substantially constant ground load.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to FIGS. The brush support device 1 includes a sweeping brush 2, left and right brush swinging arms 3 that support the sweeping brush 2 so as to be swingable in the vertical direction, and moving the sweeping brush 2 up and down in the vertical direction. It is comprised from the brush raising / lowering lever 4 which can adjust a grounding load. In the vehicle body 5 of the cleaner, an arm mounting shaft 6 is pivotally supported by a bearing 7 provided on the vehicle body 5 in the vehicle width direction, and one end side of the brush swing arm 3 is provided at each end of the arm mounting shaft 6. The shaft locking portion 3 a is attached, and the brush swing arm 3 can swing integrally with the arm mounting shaft 6. A sweeping brush 2 is rotatably supported at the other end of the left and right brush swing arms 3. The sweep brush 2 is movable in the vertical direction by swinging the brush swing arm 3 to a storage position P1 indicated by a solid line and a grounding position P2 indicated by a two-dot chain line in FIGS.
[0008]
Further, a pressure member mounting portion 8 is integrally provided on the lower side portion of the brush swinging arm 3 on the brush 2 side, which is swept up from the arm mounting shaft 6. A long hole 9 is formed. A moment adjusting bolt 22 is movably inserted in the load adjusting long hole 9 and is fixed so that the position can be adjusted by screwing a nut (not shown) from the opposite side across the pressing member mounting portion 8. . One end of a pressurizing spring 10 shown as a pressurizing member is hooked on the moment adjusting bolt 22 so that the position of one end of the pressurizing spring 10 can be adjusted along the load adjusting long hole 9. The other end of the pressurizing spring 10 is latched to a spring latching portion 11 of the vehicle body 5. The pressurizing spring 10 is a tension coil spring, and applies an elastic force in the brush pressing direction to one end side of the brush swing arm 3 to increase the ground load of the sweeping brush 2.
[0009]
A connecting pin 12 protrudes from the tip of one end of the brush swing arm 3, and the connecting pin 12 is movably fitted in a long hole 14 formed at one end of the connecting member 13 so as to swing the brush. The moving arm 3 and the connecting member 13 are connected. The other end of the connecting member 13 is pivotally attached to the distal end of the pivot base portion on one end side of the brush elevating lever 4 via the storage position adjusting mechanism 15 so that the brush elevating lever 4 and the brush swing arm 3 are directly connected. As shown in FIG. 3, the storage position adjusting mechanism 15 has a length adjusting bolt 23 welded to the connecting member 13 screwed into the rod end 24, and a screwed length between the length adjusting bolt 23 and the rod end 24. By adjusting the height, the upper end position of the long hole 14 of the connecting member 13 moves up and down, and the movement of the upper end position of the long hole 14 causes the connecting pin 12 at one end of the brush swing arm 3 fitted into the long hole 14 to move. The height position is changed, the other end of the brush swing arm 3 swings, and the retracted position height of the brush 2 is adjusted to an appropriate position. Adjustment of the screwing length between the length adjusting bolt 23 and the rod end 24 is performed by removing the pivot between the rod end 24 and the brush lifting lever 4 and rotating the rod end 24. The brush raising / lowering lever 4 is pivotally supported by a shaft 25 fixed to the vehicle body 5 at a pivot base at one end, and further, one end of a gas spring 16 as a pressure reducing member is rotatable at the tip of the pivot base. It is connected to. The other end of the gas spring 16 is rotatably provided on the vehicle body 5. As will be described later, the gas spring 16 applies a load in the brush lifting direction to the brush swing arm 3 via the brush lifting lever 4 and the connecting member 13 when the brush lifting lever 4 is at the intermediate position A2. The load larger than the elastic force of the pressurizing spring 10 is always applied downward, and the sweeping brush 2 is grounded to the road surface R with a grounding load lighter than its own weight.
[0010]
The other end of the brush elevating lever 4 is in a position where it can be operated at the driver's seat 17 and is guided by a lever guide 18 provided on the vehicle body 5. As shown in FIG. 4, the lever guide 18 has a lever storage position holding portion 19 that holds the brush lifting lever 4 in the retracted position A <b> 1 and a lever pressing position holding that holds the brush lifting lever 4 in the pressing position A <b> 3. A portion 20 is formed, and the brush elevating lever 4 is positioned at the intermediate position A2 in a free state in the middle of the guide groove 21 connecting the lever storage position holding portion 19 and the lever pressurization position holding portion 20.
[0011]
When there is little dust on the road surface R, or during normal cleaning when the road surface R is substantially flat, the operator removes the brush lift lever 4 from the retracted position A1 of the lever guide 18 at the driver's seat 17 and moves to the intermediate position A2. To. Then, the connecting member 13 moves upward, the sweeping brush 2 in the brush storage position moves to the grounding position, and the elastic force of the gas spring 16 is set larger than the elastic force of the pressurizing spring 10. The upper end of the elongated hole 14 of the connecting member 13 pushes the connecting pin 12 downward by the resultant force obtained by subtracting the load of the spring 10 for pressing from the load of the spring 16, so that an upward load acts on the other end of the brush swing arm 3. The sweeping brush 2 contacts the road surface R with a contact load smaller than the weight of the brush itself. In this state, the sweep-up brush 2 rotates, dust on the road surface R is swept up, and charged and collected in a hopper provided on the vehicle body 5 (not shown).
[0012]
When there is a lot of dust on the road surface R or when the unevenness of the road surface R is severe, the brush raising / lowering lever 4 is further pushed down to the pressure position A3. When the brush elevating lever 4 is set to the pressurizing position A3, the brush elevating lever 4 is held by the lever pressurizing position holding unit 20. Further, the connecting member 13 moves upward from the middle position, the pressure contact between the upper end of the long hole 14 and the connecting pin 12 is released, and the connecting pin 12 is positioned at the intermediate position of the long hole 14 as shown in FIG. . As a result, the load of the gas spring 16 does not act on the brush swing arm 3 via the connecting member 13, and the pressurizing member mounting portion 8 of the brush swing arm 3 is moved by the spring retaining portion 11 by the load of the pressurizing spring 10. The other end of the brush swing arm 3 is pushed down, the sweeping brush 2 at the other end of the brush swing arm 3 is pressed, and the load of the pressure spring 10 is further applied to the weight of the brush. It is possible to make contact with the road surface R with a load whose contact load is further increased and to sweep up dust on the road surface R.
[0013]
When the cleaning operation is finished and the cleaning brush 2 is lifted from the ground contact position P2 to the brush storage position P1, when the brush lift lever 4 is operated to the storage position A1, the connecting member 13 moves downward to The upper end presses the connecting pin 12 downward, and one end of the brush swing arm 3 moves downward, the other end moves upward, and the brush 2 rises and is stored in the brush storage position P1. At this time, since the load of the gas spring 16 acts in the direction of pulling up the brush 2, the operating force required for the operator to pull up the brush 2 is small. When the sweeping brush 2 is worn by cleaning and the ground load of the brush 2 is reduced, the moment adjusting bolt 22 fixed to the upper end of the load adjusting slot 9 shown in FIGS. By moving to the lower end side of the adjustment long hole 9, the distance from the arm mounting shaft at one end position of the pressurizing spring 10 is increased, the moment to the brush swing arm 3 by the pressurizing spring 10 is increased, and the sweeping brush By increasing the pressing force to 2, the ground load of the sweeping brush 2 is made substantially constant.
[0014]
The link member provided at one end of the connecting member 13 and one end of the brush swing arm 3 may be connected. In this case, the link swing member 3 and the link member are connected to the brush swing arm 3 and the brush. It becomes a connecting member that directly connects the lifting lever 3. Further, the other end of the pressurizing spring 10 may be hooked on the connecting member 13. Further, although the pressurizing spring 10 is used as the pressurizing member, the pressurizing member may be a gas spring (cylinder) or a weight. When the weight is used, for example, it is provided on a shaft member that supports the brush 2. Of course, the pressure reducing member may be a spring or the like.
[0015]
【The invention's effect】
As described above, according to the present invention, the brush swing arm and the brush lifting lever are connected to each other through the elongated hole by the connecting member, and the pressure reducing member for applying a load in the brush lifting direction to the brush lifting lever is provided. A pressure swinging member that applies a load to the moving arm in the direction of pressing the brush is provided, and the brush swinging arm is operated with the brush lifting lever acting on the brush swinging arm in the brush lifting direction via the connecting member. Is moved to the brush retracted position by swinging the brush in the brush pulling direction, and the connecting member is moved to a position where the load of the pressure reducing member does not act on the brush swinging arm, so that the weight of the brush itself and the pressure member are loaded. Pressure applied to the brush, and the load of the decompression member via the connecting member is applied to the brush swinging arm in the brush pulling direction so that the weight of the brush and the pressure unit In the lever guide is provided to position and an intermediate position for applying a smaller load than the load on the brush, since the allow the lifting operation and the ground contact load adjustment of the brush of the brush by the operation of the brush lifting levers, one brush lift lever In addition, the brush lifting operation and the brush ground load adjustment operation can be easily performed, and the structure can be simplified and the cost can be reduced. Further , according to the present invention, the load of the pressure reducing member acting on the brush is set larger than the load of the pressure member acting on the brush, and the resultant force acting on the brush acts in the brush pulling direction and is smaller than the weight of the brush itself. Since the brush is grounded with a load, the brush lifting lever can be operated with a small operating force when storing the brush. Further, according to the present invention, the connecting member is pivotally attached to the brush lifting lever via the storage position adjusting mechanism, and the height of the storage position of the brush can be adjusted by adjusting the length of the storage position adjusting mechanism. Therefore, the storage position height of the brush can be adjusted to an appropriate position. Further, according to the present invention, the brush swing arm is provided with a load adjusting long hole capable of adjusting the ground contact load of the brush, and the pressure member is attached to the load adjusting long hole so that the position of the brush can be adjusted. Even if the ground load changes due to wear, the ground load can be adjusted to a substantially constant level.
[Brief description of the drawings]
FIG. 1 is a side view showing an outline of a brush support device according to the present invention.
FIG. 2 is an enlarged side view of a brush.
FIG. 3 is an enlarged view of a part III in FIG. 1;
4 is a view as seen from IV in FIG. 1;
FIG. 5 is an explanatory diagram showing a state at a brush lifting lever pressing position.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Brush support device 2 Sweeping brush 3 Brush swing arm 4 Brush raising / lowering lever 5 Car body 9 Load adjusting long hole 10 Pressurizing spring (pressurizing member)
13 Connecting member 16 Gas spring (pressure reducing member)
18 Lever guide

Claims (4)

車体に対して上下方向に揺動可能なブラシ揺動アームにブラシを回転可能に支持し、ブラシ揺動アームを連結部材を介してブラシ昇降レバーに連結し、ブラシ昇降レバーによりブラシを昇降させるブラシ支持装置において、ブラシ揺動アームとブラシ昇降レバーとを連結部材で長孔を介して連結し、ブラシ昇降レバーにブラシ引き上げ方向に荷重を作用させる減圧部材を設け、ブラシ揺動アームにブラシ押付け方向に荷重を作用させる加圧部材を設け、ブラシ昇降レバーを、連結部材を介して減圧部材の荷重をブラシ揺動アームにブラシ引き上げ方向に作用させた状態でブラシ揺動アームをブラシ引き上げ方向に揺動させてブラシをブラシ格納位置に上昇させる格納位置と、連結部材を減圧部材の荷重がブラシ揺動アームに作用しない位置に移動させてブラシ自重と加圧部材の荷重をブラシに作用させる加圧位置と、連結部材を介して減圧部材の荷重をブラシ揺動アームにブラシ引き上げ方向に作用させてブラシ自重と加圧部材による荷重より小さい荷重をブラシに作用させる中間位置とに位置させるレバーガイドを設け、ブラシ昇降レバーの操作によってブラシの昇降操作とブラシの接地荷重調整を行えるようにしたことを特徴とする清掃機のブラシ支持装置。A brush that rotatably supports a brush on a brush swinging arm that can swing up and down with respect to the vehicle body, and that connects the brush swinging arm to a brush lift lever via a connecting member, and moves the brush up and down with the brush lift lever. In the support device, the brush swinging arm and the brush lifting lever are connected to each other through a long hole by a connecting member, and a pressure reducing member for applying a load in the brush lifting direction is provided on the brush lifting lever, and the brush pressing direction is applied to the brush swinging arm. A pressure member for applying a load to the brush is provided, and the brush lift lever is swung in the brush pulling direction with the brush lift lever acting on the brush swing arm in the brush pulling direction via the connecting member. a storage position to raise the brush to the brush storage position by moving a position of the connecting member loads the pressure reducing member does not act on the brush swinging arm A pressing position by moving the action of load of the brushes own weight and pressure member to the brush, due to the load of the vacuum member via the connecting member by acting on the brush pulling direction to the brush swinging arm brushes own weight and pressure member A brush for a cleaning machine is provided with a lever guide that is positioned at an intermediate position where a load smaller than the load is applied to the brush, so that the brush can be lifted and adjusted by adjusting the brush lifting lever. Support device. ブラシに作用する減圧部材の荷重をブラシに作用する加圧部材の荷重より大きく設定し、ブラシに作用する両者の合力がブラシ引き上げ方向に作用してブラシがブラシ自重より小さい接地荷重で路面に接地するようにしたことを特徴とする請求項1記載の清掃機のブラシ支持装置。 The load of the pressure reducing member acting on the brush is set to be larger than the load of the pressure member acting on the brush, and the resultant force acting on the brush acts in the brush pulling direction so that the brush contacts the road surface with a ground load smaller than the weight of the brush itself. it has to be cleaner brush supporting apparatus according to claim 1, wherein. 連結部材をブラシ昇降レバーに格納位置調整機構を介して枢着し、格納位置調整機構の長さを調整することでブラシの格納位置高さを調整できるようにしたことを特徴とする請求項1または2記載の清掃機のブラシ支持装置。 2. The height of the retracted position of the brush can be adjusted by pivotally connecting the connecting member to the brush lift lever via the retracted position adjusting mechanism and adjusting the length of the retracted position adjusting mechanism. Or the brush support apparatus of the cleaning machine of 2. ブラシ揺動アームにブラシの接地荷重を調整可能な荷重調整用長孔を設け、その荷重調整用長孔に加圧部材を位置調整可能に取付けたことを特徴とする請求項3記載の清掃機のブラシ支持装置。  4. A cleaning machine according to claim 3, wherein a long hole for load adjustment capable of adjusting a ground contact load of the brush is provided in the brush swing arm, and a pressure member is attached to the long hole for load adjustment so that the position of the pressure adjustment member can be adjusted. Brush support device.
JP2002170994A 2002-06-12 2002-06-12 Brush support device for cleaning machine Expired - Fee Related JP4120281B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103726467A (en) * 2014-01-21 2014-04-16 芜湖爱瑞特环保科技有限公司 Main brush of sweeper

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5355804B1 (en) 2013-01-25 2013-11-27 初田拡撒機株式会社 sweeper
JP2015163152A (en) * 2014-02-28 2015-09-10 東日本旅客鉄道株式会社 self-propelled cleaning device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103726467A (en) * 2014-01-21 2014-04-16 芜湖爱瑞特环保科技有限公司 Main brush of sweeper
CN103726467B (en) * 2014-01-21 2015-07-01 芜湖爱瑞特环保科技有限公司 Main brush of sweeper

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