JP3821356B2 - Back rack - Google Patents

Back rack Download PDF

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Publication number
JP3821356B2
JP3821356B2 JP2000242134A JP2000242134A JP3821356B2 JP 3821356 B2 JP3821356 B2 JP 3821356B2 JP 2000242134 A JP2000242134 A JP 2000242134A JP 2000242134 A JP2000242134 A JP 2000242134A JP 3821356 B2 JP3821356 B2 JP 3821356B2
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JP
Japan
Prior art keywords
backrest
backpack
inclined surface
pedestal
thin
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
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JP2000242134A
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Japanese (ja)
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JP2002054112A (en
Inventor
義一 飯田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kyoritsu Co Ltd
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Kyoritsu Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Priority to JP2000242134A priority Critical patent/JP3821356B2/en
Publication of JP2002054112A publication Critical patent/JP2002054112A/en
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Description

【0001】
【発明の属する技術分野】
本発明は、背負形動力作業機に使用される背負架台に関する。
【0002】
【従来の技術】
前記背負形動力作業機の一種の、例えば、背負形動力送風機では、内燃機関、遠心式送風機、燃料タンク等の主要な機械部分が背負架台に搭載装置され、作業者が前記架台を背負って、枯葉の吹き寄せ等の作業を行っている。
【0003】
なお、前記背負架台として、従来、金属パイプ材を屈曲、成形、溶接等により、全体として側面視L字状に構成した金属製のもの、その他、略同形にブロー成形されたプラスチック材からなる背負架台も提供されている。
【0004】
【発明が解決しようとする課題】
本発明は、前記背負形動力作業機の製造に先立って準備される背負架台であり、ブロー成形により全体として平板状に製造され、したがって、省スペース化により、その後の運搬及び保管等における取扱いが容易で、経済的であり、さらに、予め、搭載する前記内燃機関、遠心式送風機、燃料タンク等の主要な機械部分の複雑な形状に対応させた製造、及びコントロールケーブル、リード線等の引き出しが容易であり、その後の組立て作業の容易化を図ることができる、背負架台を提供することを目的とする。
【0005】
【課題を解決するための手段】
前記課題を解決するため、請求項1に示す本発明の背負架台は、背当て部分と、その下端に薄肉部分を介して水平に屈曲される台座部分がそれぞれブロー成形により全体として平板状に形成され、前記薄肉部分の左右両端の前記背当て部分及び前記台座部分に、前記薄肉部部分を挟んで互いに反対方向へ向けて形成した傾斜面部を互いに密着して連結固定し、全体として側面視L字状に形成してなる背負架台である。
【0006】
前記請求項1に示す本発明の背負架台によれば、前記背当て部及び前記台座部分が、ブロー成形により全体として平板状に製造される。したがって、省スペース化により、その後の運搬及び保管等における取扱いが容易で、経済的であり、さらに、予め、搭載する前記機械部分の複雑形状に対応させて製造することが容易であるため、その後の組立て作業も容易である。
【0007】
請求項2に示す本発明の実施の一形態は、前記背当て部分及び前記台座部分の前記傾斜面部の対向位置に、それぞれ左右方向に伸びる凹溝を形成したことを特徴とする請求項1に記載の背負架台である。
【0008】
前記請求項2によれば、前記背当て部分及び前記台座部分を側面視L字状に形成した際に、密着させられた前記それぞれの傾斜面部の内部の左右横方向から外部に開放された透孔が形成される。
【0009】
したがって、前記背当て部分及び前記台座部分に搭載装置された前記機械部分から導出されるコントロールケーブル、リード線等を、前記背負架台の側方に引き出し、例えば、操作レバー、その他のコントロール部材に接続することが容易である。
【0010】
【発明の実施の形態】
以下に、本発明の実施の一形態を図面に基づいて説明する。図1は、本発明の実施の一形態に係る背負架台の組立て完了状態を、台座部分方向から見た斜視図、図2は、本発明の実施の一形態に係る背負架台の組立て完了状態を、背当て部分方向から見た斜視図、図3は、本発明の実施の一形態に係る背負架台の組立て完了状態を示す要部縦断左側面図、図4は、薄肉部分両端の傾斜面部を示す斜視図、図5は、本発明の実施の一形態に係る背負架台の成形直後の形状を示す平面図、図6は、図5の要部縦断面図、図7は、本発明の実施の一形態に係る背負架台を使用した背負形動力送風機の要部断面図である。
【0011】
本発明の実施の一形態に示す背負架台Sは、背負形動力散布機、背負形動力送風機等の背負形動力作業機に用いられるもので、背当て部分1と、台座部分2と、を有し、これらの部分が全体として側面視L字状に形成される。
【0012】
前記背当て部分1は、全体的に四角形状に形成され、その背当て面を形成する前面3には、後に述べる緩衝部材4を取付けるための取付け部5が形成され、後に述べる機械部分Mが搭載装置される背面6には、後に述べる遠心式送風機7への吸気効率を高めるために周囲になだらかな湾曲面8aを形成した凸状吸気ガイド部8が形成されている。なお、図中、9は、後に述べる背負ベルト10の取付け部、11は、携帯用ハンドルである。
【0013】
前記台座部分2は、全体的に四角形状に形成され、前記背当て部分1の下端に、薄肉部分12を介して水平に屈曲自在に設けられ、上面13には、前記遠心式送風機7の搭載装置部の下方に形成した窓孔14、後に述べる内燃機関15及び燃料タンク16等の機械部分Mの支持部17が形成されている。
【0014】
さらに、前記薄肉部分12の左右両端の、前記背当て部分1及び台座部分2に、それぞれ前記薄肉部分12を挟んで互いに反対方向へ向けて第一傾斜面部18及び第二傾斜面部19が形成される。なお、前記背当て部分1の前記第一傾斜面部18と前記台座部分2の前記第二傾斜面部19との間の角度は、前記ブロー成形時に互いに90度の角度をなすように形成される。
【0015】
さらに、図面実施の一形態では、前記背当て部1の前記第一傾斜面部18及び前記台座部分2の第二傾斜面部19の対向位置に、それぞれ左右方向に伸びる凹溝20及び21が形成されている。
【0016】
さらに、前記背当て部分1の前記第一傾斜面部18には、前記凹溝20を挟んで、それぞれ連結孔23が形成され、前記台座部分2の前記第二傾斜面部19には、前記凹溝21を挟み、かつ前記背当て部分1の前記第一傾斜面部18に形成された前記連結孔23と対応する位置にそれぞれボルト等の適当な連結具22が嵌合し得る孔25が形成される。図中、30は、いずれも前記機械部分Mの固定用取付座である。
【0017】
つぎに、前記背負架台Sの製造及び組立てについて説明する。前記背負架台Sは、プラスチック材料のブロー成形により、図5及び図6に示すように平板状に成形される。すなわち、前記背当て部分1及び台座部分2がそれぞれ中空箱形の薄壁構造に成形され、前記背当て部分1及び前記台座部分2との間に、可撓性の前記薄肉部分12が介在させられて一体板状に成形される。図中、Wは、補強を兼ねた溶着部である。
【0018】
前記構成により、前記背当て部分1を起立させた状態において、前記台座部分2を水平方向に屈曲させて、図1乃至図3に示すように側面視L字状に組立てることができる。
【0019】
すなわち、前記背負架台Sの組立ては、前記可撓性の薄肉部分12において、起立させた状態の前記背当て部分1に対して前記台座部分を水平方向へ90度屈曲させ、かつ前記第一傾斜面部18及び前記第二傾斜面部19を互いに密着させ、前記第一傾斜面部18及び前記第二傾斜面部19に、予め形成された対応する前記連結孔23及び前記連結孔25に、それぞれボルト等の適当な連結具22をそれぞれ嵌合固定し、図1乃至3に示す形状に組立てることができる。
【0020】
前記組立て完了とともに、密着させられた前記第一傾斜面部18及び前記第二傾斜面部19の内部の左右横方向に、外部に開放された円形の透孔29が形成される。該透孔29は、前記背当て部分1及び台座部分2に搭載装置された前記機械部分Mからのコントロールケーブル、リード線等を、前記背負架台Sの側方に引き出したり、コントロールアームを枢着したりするために使用される。
【0021】
図7には、前記背負架台Sを使用した背負形動力送風機の要部の断面図が示されている。同図において、15は、前記した小型空冷2サイクルガソリンエンジン等の内燃機関、7は、前記内燃機関15によって駆動される前記した遠心式送風機、7aは、該遠心式送風機7を構成するファン、16は、前記した燃料タンクである。
【0022】
また、図中、26は、前記遠心式送風機7への落ち葉等の吸引を阻止するグリッドであり、前記遠心式送風機7の吸気口7bの周囲、かつ、前記背当て部分1の背面6に形成した前記凸状部8に対向させて設けられ、多数の細長通気孔26aを有する。その他、明示していないが、前記コントロールアームに取着した各種コントロールレバー等の前記機械部分Mが搭載装置される。
【0023】
なお、前記機械部分Mは、同図に示すごとく、前記背当て部分1及び前記台座部分2との間に、各種の防振部材、例えば、筒状防振部材27、28、28等を前記固定用取付座30、30、30に取着して搭載装置される。
【0024】
図7の背負形動力送風機によれば、前記背当て部分1に形成した前記凸状部8及び前記台座部分2に形成した前記窓孔14により、前記遠心式送風機7の吸気口7bへの空気吸引が、同図に矢印Aで示したごとく、吸引抵抗を最小にして効率的に行われる。その他、本発明の背負架台Sは、ブロー成形により製造されるため、搭載装置する前記機械部分Mの複雑形状に対応させて製造することが容易である。
【0025】
【発明の効果】
前記本発明の背負架台によれば、背当て部分及び台座部分がブロー成形により全体として平板状に製造され、省スペース化により、その後の運搬及び保管等における取扱いが容易で、経済的であり、さらに、予め、搭載装置する機械部分に対応させた形状に製造すること、及びコントロールケーブル、リード線等の引き出しも容易であり、その後の組立て作業の容易化を図ることができる。
【図面の簡単な説明】
【図1】本発明の実施の一形態に係る背負架台の組立て完了状態を、台座部分方向から見た斜視図である。
【図2】本発明の実施の一形態に係る背負架台の組立て完了状態を、背当て部分方向から見た斜視図である。
【図3】本発明の実施の一形態に係る背負架台の組立て完了状態を示す要部縦断左側面図である。
【図4】薄肉部分両端の傾斜面部を示す斜視図である
【図5】本発明の実施の一形態に係る背負架台の成形直後の形状を示す平面図である。
【図6】図5の要部縦断面図である。
【図7】本発明の実施の一形態に係る背負架台を使用した背負形動力送風機の要部断面図である。
【符号の説明】
1 背当て部分
2 台座部分
12 薄肉部分
18 傾斜面部
19 傾斜面部
20 凹溝
21 凹溝
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a back rack used for a back load type power working machine.
[0002]
[Prior art]
A kind of the above-mentioned back type power working machine, for example, in a back type power blower, main mechanical parts such as an internal combustion engine, a centrifugal blower, a fuel tank, etc. are mounted on a back carrying stand, and an operator carries the above carrying back, We work on blowing dead leaves.
[0003]
In addition, as the above-described backrest, conventionally, a metal pipe material formed by bending, molding, welding, or the like to form an L-shape as viewed from the side as a whole, or a backpack made of a plastic material blow-molded in substantially the same shape. A stand is also provided.
[0004]
[Problems to be solved by the invention]
The present invention is a backpack that is prepared prior to the manufacture of the backpack-type power working machine, and is manufactured in a flat plate shape as a whole by blow molding. Therefore, space saving enables subsequent handling in transportation and storage. It is easy and economical, and is manufactured in advance according to the complicated shape of the main mechanical parts such as the internal combustion engine, centrifugal blower, and fuel tank to be mounted, and control cables and lead wires are drawn out. It is an object of the present invention to provide a backpack that is easy and can facilitate subsequent assembly work.
[0005]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, in the backrest of the present invention shown in claim 1, the back rest part and the base part bent horizontally through the thin part at the lower end thereof are each formed into a flat plate shape by blow molding. Inclined surface portions formed in opposite directions with the thin-walled portion sandwiched between the backrest portion and the pedestal portion at both left and right ends of the thin-walled portion are connected and fixed in close contact with each other. It is a backpack that is formed in a letter shape.
[0006]
According to the backrest frame of the present invention shown in the first aspect, the backrest portion and the pedestal portion are manufactured in a flat plate shape as a whole by blow molding. Therefore, because of space saving, it is easy to handle in subsequent transportation and storage, etc., and it is easy to manufacture in advance according to the complicated shape of the machine part to be mounted. Assembling work is also easy.
[0007]
According to an embodiment of the present invention shown in claim 2, a concave groove extending in the left-right direction is formed at a position opposite to the inclined surface portion of the backrest portion and the pedestal portion. It is a backrest mount of description.
[0008]
According to the second aspect of the present invention, when the backrest portion and the pedestal portion are formed in an L shape in a side view, the transparent portions that are open to the outside from the left and right lateral directions inside the respective inclined surface portions that are in close contact with each other are formed. A hole is formed.
[0009]
Therefore, pull out the control cable, lead wire, etc. derived from the machine part mounted on the backrest part and the pedestal part to the side of the backpack and connect it to, for example, an operating lever or other control member Easy to do.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of an assembly completion state of a backpack according to an embodiment of the present invention as seen from the direction of a pedestal portion, and FIG. 2 illustrates an assembly completion state of the backrest according to an embodiment of the present invention. Fig. 3 is a perspective view seen from the direction of the backrest part, Fig. 3 is a longitudinal left side view of a main part showing the assembly completion state of the backpack according to the embodiment of the present invention, and Fig. 4 is an inclined surface part at both ends of the thin part. FIG. 5 is a plan view showing a shape immediately after molding of a backpack according to an embodiment of the present invention, FIG. 6 is a longitudinal sectional view of the main part of FIG. 5, and FIG. It is principal part sectional drawing of the backpack type power blower using the backpack mount which concerns on one form.
[0011]
A backpack base S shown in an embodiment of the present invention is used for a backpack power working machine such as a backpack power spreader or a backpack power blower, and has a backrest portion 1 and a pedestal portion 2. And these parts are formed in L shape in side view as a whole.
[0012]
The back support portion 1 is formed in a rectangular shape as a whole, and an attachment portion 5 for attaching a buffer member 4 to be described later is formed on the front surface 3 forming the back support surface. A convex intake guide portion 8 having a gently curved surface 8a is formed on the back surface 6 of the mounting device in order to increase the efficiency of intake to the centrifugal blower 7 described later. In the figure, reference numeral 9 denotes a mounting portion of a backpack 10 described later, and 11 denotes a portable handle.
[0013]
The pedestal portion 2 is formed in a rectangular shape as a whole, and is provided at the lower end of the backrest portion 1 so as to be bent horizontally through a thin portion 12. On the upper surface 13, the centrifugal blower 7 is mounted. A window hole 14 formed below the apparatus part, and a support part 17 for a machine part M such as an internal combustion engine 15 and a fuel tank 16 described later are formed.
[0014]
Furthermore, a first inclined surface portion 18 and a second inclined surface portion 19 are formed on the backrest portion 1 and the pedestal portion 2 at the left and right ends of the thin portion 12 in opposite directions with the thin portion 12 interposed therebetween, respectively. The The angle between the first inclined surface portion 18 of the backrest portion 1 and the second inclined surface portion 19 of the pedestal portion 2 is formed so as to form an angle of 90 degrees with each other during the blow molding.
[0015]
Furthermore, in one embodiment of the drawings, recessed grooves 20 and 21 extending in the left-right direction are formed at opposing positions of the first inclined surface portion 18 of the backrest portion 1 and the second inclined surface portion 19 of the pedestal portion 2, respectively. ing.
[0016]
Further, the first inclined surface portion 18 of the backrest portion 1 is formed with a connecting hole 23 across the concave groove 20, and the second inclined surface portion 19 of the pedestal portion 2 has the concave groove And a hole 25 into which a suitable connecting tool 22 such as a bolt can be fitted, at a position corresponding to the connecting hole 23 formed in the first inclined surface portion 18 of the backrest portion 1. . In the figure, reference numeral 30 denotes a mounting seat for fixing the machine part M.
[0017]
Next, the manufacture and assembly of the backpack S will be described. The back rack S is formed into a flat plate shape as shown in FIGS. 5 and 6 by blow molding of a plastic material. That is, the backrest part 1 and the pedestal part 2 are each formed into a hollow box-shaped thin wall structure, and the flexible thin-walled part 12 is interposed between the backrest part 1 and the pedestal part 2. And formed into an integral plate. In the figure, W is a welded portion that also serves as a reinforcement.
[0018]
With the above configuration, the pedestal portion 2 can be bent in the horizontal direction in the state where the backrest portion 1 is erected, and can be assembled in an L shape as viewed from the side as shown in FIGS.
[0019]
That is, assembling the backrest base S is performed by bending the pedestal portion in the horizontal direction 90 degrees with respect to the backrest portion 1 in the standing state in the flexible thin-walled portion 12 and the first inclined portion. The surface portion 18 and the second inclined surface portion 19 are brought into close contact with each other, and the first inclined surface portion 18 and the second inclined surface portion 19 are respectively formed in the corresponding connecting hole 23 and the connecting hole 25 formed in advance with bolts or the like. Appropriate couplers 22 can be fitted and fixed, and assembled into the shapes shown in FIGS.
[0020]
Upon completion of the assembly, circular through holes 29 opened to the outside are formed in the left and right lateral directions inside the first inclined surface portion 18 and the second inclined surface portion 19 that are brought into close contact with each other. The through-hole 29 is used to pull out a control cable, a lead wire, etc. from the machine part M mounted on the backrest part 1 and the pedestal part 2 to the side of the backpack S, or to pivotally attach a control arm. Used to do.
[0021]
FIG. 7 shows a cross-sectional view of a main part of a backpack type power blower using the backpack base S. In the figure, 15 is an internal combustion engine such as the above-described small air-cooled two-cycle gasoline engine, 7 is the centrifugal blower driven by the internal combustion engine 15, 7a is a fan constituting the centrifugal blower 7, Reference numeral 16 denotes the fuel tank described above.
[0022]
In the figure, reference numeral 26 denotes a grid that prevents suction of fallen leaves and the like to the centrifugal blower 7, and is formed around the air inlet 7 b of the centrifugal blower 7 and on the back surface 6 of the backrest portion 1. And provided with a plurality of elongated vent holes 26a. In addition, although not explicitly shown, the mechanical part M such as various control levers attached to the control arm is mounted.
[0023]
As shown in the figure, the mechanical part M is provided with various anti-vibration members such as cylindrical anti-vibration members 27, 28, 28, etc. between the backrest part 1 and the pedestal part 2. The mounting device is attached to the fixing mounting seats 30, 30, 30.
[0024]
According to the back-fed type power blower of FIG. 7, the air to the inlet 7 b of the centrifugal blower 7 is formed by the convex portion 8 formed in the backrest portion 1 and the window hole 14 formed in the pedestal portion 2. As shown by the arrow A in the figure, the suction is efficiently performed with the suction resistance being minimized. In addition, since the backpack S of the present invention is manufactured by blow molding, it is easy to manufacture in accordance with the complicated shape of the machine part M to be mounted.
[0025]
【The invention's effect】
According to the backpack of the present invention, the backrest portion and the pedestal portion are manufactured in a flat plate shape as a whole by blow molding, and due to space saving, handling in subsequent transportation and storage is easy and economical. Furthermore, it is easy to manufacture in advance a shape corresponding to the machine part to be mounted, and to pull out the control cable, lead wire, etc., and the subsequent assembly work can be facilitated.
[Brief description of the drawings]
FIG. 1 is a perspective view of an assembly completion state of a backpack according to an embodiment of the present invention, viewed from a pedestal portion direction.
FIG. 2 is a perspective view of an assembled state of a backpack according to an embodiment of the present invention as viewed from the backrest portion direction.
FIG. 3 is a longitudinal sectional left side view of a main part showing a completed state of the backpack according to the embodiment of the present invention.
FIG. 4 is a perspective view showing inclined surface portions at both ends of a thin-walled portion. FIG. 5 is a plan view showing a shape immediately after forming a backpack according to an embodiment of the present invention.
6 is a longitudinal sectional view of a main part of FIG.
FIG. 7 is a cross-sectional view of a main part of a backpack-type power blower using a backpack according to an embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Back part 2 Base part 12 Thin part 18 Inclined surface part 19 Inclined surface part 20 Concave groove 21 Concave groove

Claims (2)

背当て部分(1)と、その下端に薄肉部分(12)を介して水平に屈曲される台座部分(2)がそれぞれブロー成形により全体として平板状に形成され、前記薄肉部分(12)の左右両端の前記背当て部分(1)及び前記台座部分(2)に、前記薄肉部分(12)を挟んで互いに反対方向へ向けて形成した傾斜面部(18,19)を互いに密着して連結固定し、全体として側面視L字状に形成してなる背負架台。A backrest portion (1) and a pedestal portion (2) bent horizontally at the lower end via a thin-walled portion (12) are respectively formed into a flat plate shape by blow molding, and left and right of the thin-walled portion (12). Inclined surface portions (18, 19) formed in opposite directions with the thin-walled portion (12) sandwiched between the backrest portion (1) and the pedestal portion (2) at both ends are closely connected and fixed. A back rack that is formed in an L shape in side view as a whole. 前記背当て部分(1)及び前記台座部分(2)の前記傾斜面部(18,19)の対向位置に、それぞれ左右方向に伸びる凹溝(20,21)を形成したことを特徴とする請求項1に記載の背負架台。A concave groove (20, 21) extending in the left-right direction is formed at a position opposite to the inclined surface portion (18, 19) of the backrest portion (1) and the pedestal portion (2). The back rack according to 1.
JP2000242134A 2000-08-10 2000-08-10 Back rack Expired - Fee Related JP3821356B2 (en)

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JP2002054112A JP2002054112A (en) 2002-02-20
JP3821356B2 true JP3821356B2 (en) 2006-09-13

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4246532B2 (en) * 2003-04-08 2009-04-02 株式会社共立 Portable air blower
WO2015005140A1 (en) * 2013-07-10 2015-01-15 日立工機株式会社 Over-the-shoulder type air-blowing work machine and over-the-shoulder frame
JP6253911B2 (en) * 2013-07-25 2017-12-27 ニューデルタ工業株式会社 Air blower

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