JP2000170689A - Racing preventing structure for blower fan - Google Patents

Racing preventing structure for blower fan

Info

Publication number
JP2000170689A
JP2000170689A JP10345259A JP34525998A JP2000170689A JP 2000170689 A JP2000170689 A JP 2000170689A JP 10345259 A JP10345259 A JP 10345259A JP 34525998 A JP34525998 A JP 34525998A JP 2000170689 A JP2000170689 A JP 2000170689A
Authority
JP
Japan
Prior art keywords
blower fan
internal combustion
combustion engine
boss
output shaft
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.)
Granted
Application number
JP10345259A
Other languages
Japanese (ja)
Other versions
JP3709295B2 (en
Inventor
Kazunori Takahashi
和範 高橋
Fumihiko Aiyama
文彦 相山
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.)
Kioritz Corp
Original Assignee
Kioritz Corp
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
Application filed by Kioritz Corp filed Critical Kioritz Corp
Priority to JP34525998A priority Critical patent/JP3709295B2/en
Publication of JP2000170689A publication Critical patent/JP2000170689A/en
Application granted granted Critical
Publication of JP3709295B2 publication Critical patent/JP3709295B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

PROBLEM TO BE SOLVED: To improve the durability of an attaching portion of a blower fan by relieving power added on a clamping boss portion of the blower fan to prevent buckling, deformation and the like of the blower fan clamping boss portion, and certainly prevent racing of the blower fan. SOLUTION: On a reinforcing ring-shaped rib portion 17 formed on a back surface part of a blower fan 12, a fitting recess portion for a clutch shoe attaching boss 14 provided on a magnet rotor 15 attached to an output shaft 13 of an internal combustion engine is formed. The fitting recess portion is fitted for the clutch shoe attaching boss 14 to fix the blower fan 12 to the output shaft 13.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、ブロワフアンの空
転防止構造に関し、特に、内燃エンジンを駆動源とする
ブロワフアンの空転防止構造に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for preventing an idle rotation of a blower fan, and more particularly to a structure for preventing an idle rotation of a blower fan driven by an internal combustion engine.

【0002】[0002]

【従来の技術】従来、例えば、落葉や木片、塵芥等の清
掃作業に使用されているバキュームクリーナとして、図
6に示されているように、本体部1が原動機としての小
型空冷2サイクルガソリンエンジン2、始動用のリコイ
ルスタータ3、燃料タンク4及びフアンケーシング5等
で一体に構成され、前記フアンケーシング5の吸込み口
5aにサクションパイプ6が着脱可能に連結されるとと
もに、前記フアンケーシング5の吹出し口5bには吹出
しパイプ7が着脱可能に連結され、該吹出しパイプ7の
風下(吹出し)端に適宜の通気性を有するダストバッグ
8を設けたものが提供されている。図中、9及び10は
作業者が把持する操作ハンドルである。
2. Description of the Related Art As shown in FIG. 6, a small air-cooled two-stroke gasoline engine having a main body 1 as a prime mover is conventionally used as a vacuum cleaner used for cleaning fallen leaves, wood chips, dust and the like. 2. A starter recoil starter 3, a fuel tank 4, a fan casing 5, and the like are integrally formed. A suction pipe 6 is detachably connected to a suction port 5a of the fan casing 5, and a blow-out of the fan casing 5 is performed. A blowout pipe 7 is detachably connected to the opening 5b, and a blowout pipe 7 is provided with a dust bag 8 having an appropriate air permeability at a leeward (blowout) end. In the figure, reference numerals 9 and 10 denote operation handles to be gripped by the operator.

【0003】なお、同図には図示していないが、前記フ
アンケーシング5内には、前記内燃エンジン2の出力軸
13を介して回転させられるカッター11及びブロワフ
アン12等が配設されている(特開平8ー13436号
公報、USP.5245726号公報等参照)。なお、
前記フアンケーシング5、サクションパイプ6、吹出し
パイプ7及びブロワフアン12等は、軽量化のためプラ
スチックスで成形されている。
Although not shown in FIG. 1, a cutter 11 and a blower fan 12 which are rotated via an output shaft 13 of the internal combustion engine 2 are arranged in the fan casing 5 (see FIG. 1). See JP-A-8-13436, US Pat. No. 5,245,726, etc.). In addition,
The fan casing 5, the suction pipe 6, the blow-out pipe 7, the blower fan 12, and the like are formed of plastics for weight reduction.

【0004】[0004]

【発明が解決しようとする課題】前記バキュームクリー
ナでは、前記内燃エンジン2を始動すると、該内燃エン
ジン2の出力軸13を介してカッター11及びブロワフ
アン12が回転させられ、落ち葉等の被吸引物が前記サ
クションパイプ6内に吸込まれ、まず、前記カッター1
1によって粉砕され、さらに、前記ブロワフアン12の
働きによって前記フアンケーシング5の吹出し口5bに
連結された吹出しパイプ7の風下(吹出し)端に設けら
れたダストバッグ8内に収納される。
In the vacuum cleaner, when the internal combustion engine 2 is started, the cutter 11 and the blower fan 12 are rotated via an output shaft 13 of the internal combustion engine 2 to remove an object to be sucked such as fallen leaves. Suctioned into the suction pipe 6, first, the cutter 1
1 and is stored in a dust bag 8 provided at the leeward (outlet) end of an outlet pipe 7 connected to an outlet 5b of the fan casing 5 by the function of the blower fan 12.

【0005】ところが、使用を継続すると、前記ブロワ
フアンの回転によって前記フアンケーシング内に吸込ま
れた被吸引物と前記ブロワフアンとの接触による衝撃等
によって、ブロワフアンの締付ボス部16に座屈、変形
等が生じ、ブロワフアンが空回りする等の問題があっ
た。
However, if the blower fan continues to be used, the tightening boss 16 of the blower fan buckles, deforms, etc. due to the impact of the contact between the blower fan and the suctioned object sucked into the fan casing by the rotation of the blower fan. And the blower fan spins idle.

【0006】本発明は、前記事情に鑑みてなされたもの
で、ブロワフアンの締付ボス部に加わる力を緩和して該
ブロワフアンの締付ボス部の座屈、変形等、さらにブロ
ワフアンの空回りを防止して、ブロワフアン取付部の耐
久性を向上させたブロワフアンの空転防止構造を提供す
ることを目的とする。
The present invention has been made in view of the above circumstances, and alleviates the force applied to the fastening boss of a blower fan to prevent buckling, deformation, etc. of the fastening boss of the blower fan, and further prevent the blower fan from running idle. It is another object of the present invention to provide a blower fan anti-spin structure in which the durability of the blower fan mounting portion is improved.

【0007】[0007]

【課題を解決するための手段】本発明は前記事情に鑑み
てなされたもので、ブロワフアンの背面部に形成された
補強用環状リブ部に、エンジンの出力軸に取り付けられ
たマグネトロータに設けられた係合凸部への適合凹部を
形成し、該適合凹部を前記係合凸部に適合させて前記ブ
ロワフアンを前記出力軸に固定し、好ましくは、前記適
合凹部を前記補強用環状リブ部の全周にわたって等間隔
に形成した構成としたものである。
SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and is provided on a magneto rotor attached to an output shaft of an engine at a reinforcing annular rib formed on a rear surface of a blower fan. Forming a fitting recess to the engaging protrusion, fixing the blower fan to the output shaft by fitting the fitting recess to the engaging protrusion, and preferably forming the fitting recess on the reinforcing annular rib portion. This is a configuration formed at equal intervals over the entire circumference.

【0008】[0008]

【発明の実施の形態】以下、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、本発明に係るブロワフ
アンの空転防止構造を適用したバキュームクリーナの要
部の縦断面図、図2は、ブロワフアンの拡大縦断面図、
図3は、ブロワフアン背面の補強用環状リブ部の正面
図、図4は、マグネトロータの正面図、図5は、図4の
VーV線断面図、図6は、バキュームクリーナの斜視図
である。図1乃至図5で説明する本発明に係るブロワフ
アンの空転防止構造では、前述した図6に示されたバキ
ュームクリーナと同一部分には同一符号を付してある。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a longitudinal sectional view of a main part of a vacuum cleaner to which a blower fan anti-spin structure according to the present invention is applied, FIG. 2 is an enlarged longitudinal sectional view of a blower fan,
3 is a front view of a reinforcing annular rib portion on the back surface of the blower fan, FIG. 4 is a front view of the magneto rotor, FIG. 5 is a sectional view taken along line VV of FIG. 4, and FIG. 6 is a perspective view of a vacuum cleaner. is there. In the anti-slip structure of the blower fan according to the present invention described with reference to FIGS. 1 to 5, the same parts as those of the vacuum cleaner shown in FIG.

【0009】前記本体部1の前記フアンケーシング5内
には、前記内燃エンジン2の出力軸であるクランク軸1
3を介して回転させられるカッター11及びブロワフア
ン12が配設される。
A crankshaft 1 which is an output shaft of the internal combustion engine 2 is provided in the fan casing 5 of the main body 1.
A cutter 11 and a blower fan 12 that are rotated through the rotary shaft 3 are provided.

【0010】前記バキュームクリーナでは、遠心クラッ
チ機構を必要としないが、本実施の形態では、前記内燃
エンジン2の前記クランク軸13に、前記内燃エンジン
2の空冷用ファン兼用のクラッチシュー取付用ボス14
を有するマグネトロータ15が取付けた状態にされる。
Although the vacuum cleaner does not require a centrifugal clutch mechanism, in the present embodiment, the crankshaft 13 of the internal combustion engine 2 is provided with a clutch shoe mounting boss 14 serving also as an air cooling fan of the internal combustion engine 2.
Is mounted.

【0011】さらに、図1及び図2に示されているよう
に、前記ブロワフアン12の背面部には、該ブロワフア
ン12のそり返り防止、補強のために、通常、適数の補
強用環状リブ部17、18、放射状リブ26、27等が
一体成形により構成される。
Further, as shown in FIGS. 1 and 2, a suitable number of reinforcing annular rib portions are usually provided on the back surface of the blower fan 12 to prevent the blower fan 12 from warping and reinforcing. 17, 18 and the radial ribs 26 and 27 are formed by integral molding.

【0012】本実施の形態では、前記ブロワフアン12
の背面部に一体成形された内側の前記補強用環状リブ部
17に、回り止め用係合凸部として利用される円柱状の
前記クラッチシュー取付用ボス14の適合凹部19が形
成される。
In this embodiment, the blower fan 12
On the inner side of the reinforcing annular rib portion 17 integrally formed on the back surface of the boss, there is formed a fitting concave portion 19 of the columnar clutch shoe mounting boss 14 used as a detent engaging projection.

【0013】図面一実施の形態では、前記補強用環状リ
ブ部17の全周にわたって等間隔の波形に形成し、該波
形形成部分の内周面のそれぞれが、前記クラッチシュー
取付用ボス14が係止する前記適合凹部19となるよう
に構成されている。したがって、前記ブロワフアン12
を前記内燃エンジン2の前記クランク13に取付ける際
に、その方向性を問題にする必要がなく、前記適合凹部
19を前記クラッチシュー取付用ボス14に容易に適合
させることができる。
In one embodiment of the drawing, the reinforcing annular rib portion 17 is formed in a waveform at equal intervals over the entire circumference, and the inner peripheral surface of the waveform forming portion is engaged with the clutch shoe mounting boss 14. The fitting recess 19 is configured to stop. Therefore, the blower 12
When attaching to the crank 13 of the internal combustion engine 2, there is no need to consider the directionality, and the fitting recess 19 can be easily fitted to the clutch shoe mounting boss 14.

【0014】なお、前記ブロワフアン12の背面に成形
される前記クラッチシュー取付用ボス14の前記適合凹
部19は、前記クラッチシュー取付用ボス14の数に適
合させて適数設ければよく、また、前記補強用リブ17
の外周面に係止する位置に形成してもよい。
The number of the fitting recesses 19 of the clutch shoe mounting boss 14 formed on the back surface of the blower fan 12 may be provided in an appropriate number corresponding to the number of the clutch shoe mounting bosses 14. The reinforcing rib 17
May be formed at a position where the outer peripheral surface is locked.

【0015】前記構成において、前記ブロワフアン12
の背面に成形された前記適合凹部19が、前記内燃エン
ジン2の前記クランク軸13に取付けられた前記マグネ
トロータ15の前記クラッチシュー取付用ボス14に適
合させられ、前記ブロワファン12が内燃エンジン2の
前記クランク軸13に位置不変に固定される。
In the above construction, the blower fan 12
Is fitted to the clutch shoe mounting boss 14 of the magnet rotor 15 mounted on the crankshaft 13 of the internal combustion engine 2, and the blower fan 12 is mounted on the internal combustion engine 2. Is fixed to the crankshaft 13 at a constant position.

【0016】図面実施の一形態では、前記内燃エンジン
2の前記クランク軸13に取付けられた前記マグネトロ
ータ15部から延長された中継駆動軸20に内側ワッシ
ャー21、カッタ−兼用の外側ワッシャ−22及びナッ
ト23により前記ブロワフアン12が前記内燃エンジン
2の前記クランク軸13に強固に締付け固定されてい
る。図中、24は磁石(説明の都合上、図1と図5にお
いて、位置を変更して図示した。)、25は点火用発電
コイルである。
In the embodiment shown in the drawings, a relay drive shaft 20 extending from the magneto rotor 15 attached to the crankshaft 13 of the internal combustion engine 2 has an inner washer 21, an outer washer 22 also serving as a cutter, and an outer washer 22. The blower fan 12 is firmly fixed to the crankshaft 13 of the internal combustion engine 2 by a nut 23. In the drawing, reference numeral 24 denotes a magnet (for convenience of description, the position is changed in FIGS. 1 and 5), and reference numeral 25 denotes an ignition power generation coil.

【0017】前記構成のブロワフアンの空転防止構造を
備えたバキュームクリーナによれば、前記ブロワフアン
12の締付けボス16部の座屈、変形等による前記ブロ
ワフアン12の空回りが効果的に防止される。
According to the vacuum cleaner having the structure for preventing the blower fan from rotating, the idle rotation of the blower fan 12 due to the buckling or deformation of the fastening boss 16 of the blower fan 12 is effectively prevented.

【0018】すなわち、本実施の形態では、前記ブロワ
フアン12の背面部の前記補強用環状リブ部17に形成
された前記適合凹部19が、前記内燃エンジン2の前記
クランク軸13に固定された前記マグネトロータ15の
前記クラッチシュー取付用ボス14に適合させられてい
るため、前記ブロワフアン12の締付ボス部16に加わ
る力が緩和され、該締付ボス部16の座屈、変形、さら
に前記ブロワファン12の空回りが確実に防止されるも
のであり、同時に、前記締付ボス部16の耐久性が向上
させられる。
That is, in the present embodiment, the matching concave portion 19 formed in the reinforcing annular rib portion 17 on the back surface of the blower fan 12 is provided with the magnet portion fixed to the crankshaft 13 of the internal combustion engine 2. Since the rotor 15 is adapted to the clutch shoe mounting boss 14, the force applied to the tightening boss 16 of the blower fan 12 is reduced, and the buckling and deformation of the tightening boss 16 and the blower fan 12 is reliably prevented from running idle, and at the same time, the durability of the fastening boss 16 is improved.

【0019】なお、前記マグネトロ−タ15側にリコイ
ルスタ−タを取着すべく設計された内燃エンジンを流用
する場合には、リコイルスタ−タ用遠心クラッチ爪取付
用ポ−ル部を、係合凸部として利用することができる。
When an internal combustion engine designed to mount a recoil starter on the side of the magnetron 15 is used, the pole portion for mounting the centrifugal clutch pawl for the recoil starter is engaged with the engaging projection. Can be used as a part.

【0020】[0020]

【発明の効果】本発明によれば、内燃エンジンの出力軸
に対するブロワフアンの締付ボス部の座屈、変形、さら
にブロワファンの空回りが確実に防止できるとともに、
前記ブロワフアンの締付ボス部の耐久性を向上させるこ
とができる。
According to the present invention, the buckling and deformation of the tightening boss of the blower fan with respect to the output shaft of the internal combustion engine and the idling of the blower fan can be reliably prevented.
The durability of the fastening boss portion of the blower fan can be improved.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明の一実施の形態に係るブロワフアンの空
転防止構造を適用したバキュームクリーナの要部の縦断
面図である。
FIG. 1 is a longitudinal sectional view of a main part of a vacuum cleaner to which a structure for preventing a blower fan from spinning according to an embodiment of the present invention is applied.

【図2】図1に示すブロワフアンの拡大縦断面図であ
る。
FIG. 2 is an enlarged vertical sectional view of the blower fan shown in FIG.

【図3】ブロワフアン背面の補強用リブ部の正面図であ
る。
FIG. 3 is a front view of a reinforcing rib on the back of the blower fan.

【図4】マグネトロータの正面図である。FIG. 4 is a front view of the magneto rotor.

【図5】図4のV−V線断面図である。FIG. 5 is a sectional view taken along line VV of FIG. 4;

【図6】バキュームクリーナの一例の全体を示す斜視図
である。
FIG. 6 is a perspective view showing an example of a vacuum cleaner as a whole;

【符号の説明】[Explanation of symbols]

2 内燃エンジン 12 ブロワフアン 13 出力軸(クランク軸) 14 クラッチシュー取付用ボス(係合凸部) 15 マグネトロータ 17 補強用環状リブ部 19 適合凹部 2 Internal combustion engine 12 Blower fan 13 Output shaft (crankshaft) 14 Clutch shoe mounting boss (engaging convex portion) 15 Magneto rotor 17 Reinforcing annular rib portion 19 Compatible concave portion

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 ブロワフアン(12)の背面部に形成さ
れた補強用環状リブ部(17)に、内燃エンジン(2)
の出力軸(13)に取り付けられたマグネトロータ(1
5)に設けられた係合凸部(14)への適合凹部(1
9)を形成し、該適合凹部(19)を前記係合凸部(1
4)に適合させて前記ブロワフアン(12)を前記出力
軸(13)に固定したことを特徴とするブロワフアンの
空転防止構造。
An internal combustion engine (2) is provided on a reinforcing annular rib portion (17) formed on a rear portion of a blower fan (12).
Rotor (1) attached to the output shaft (13)
5) The concave portion (1) adapted to the engaging convex portion (14) provided in
9), and the fitting recess (19) is fitted to the engaging projection (1).
(4) The structure for preventing the blower fan from spinning, wherein the blower fan (12) is fixed to the output shaft (13).
【請求項2】 前記適合凹部(19)を前記補強用環状
リブ部(17)の全周にわたって等間隔に形成したこと
を特徴とする請求項1に記載のブロワフアンの空転防止
構造。
2. The structure according to claim 1, wherein the fitting recesses (19) are formed at equal intervals over the entire circumference of the reinforcing annular rib portion (17).
JP34525998A 1998-12-04 1998-12-04 Blower fan slip prevention structure Expired - Fee Related JP3709295B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP34525998A JP3709295B2 (en) 1998-12-04 1998-12-04 Blower fan slip prevention structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP34525998A JP3709295B2 (en) 1998-12-04 1998-12-04 Blower fan slip prevention structure

Publications (2)

Publication Number Publication Date
JP2000170689A true JP2000170689A (en) 2000-06-20
JP3709295B2 JP3709295B2 (en) 2005-10-26

Family

ID=18375394

Family Applications (1)

Application Number Title Priority Date Filing Date
JP34525998A Expired - Fee Related JP3709295B2 (en) 1998-12-04 1998-12-04 Blower fan slip prevention structure

Country Status (1)

Country Link
JP (1) JP3709295B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008018458A1 (en) * 2006-08-08 2008-02-14 Husqvarna Zenoah Co., Ltd. Engine blower
JP2010013937A (en) * 2008-06-30 2010-01-21 Hitachi Koki Co Ltd Blower device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008018458A1 (en) * 2006-08-08 2008-02-14 Husqvarna Zenoah Co., Ltd. Engine blower
US8360016B2 (en) 2006-08-08 2013-01-29 Husqvarna Zenoah Co., Ltd. Engine blower
JP2010013937A (en) * 2008-06-30 2010-01-21 Hitachi Koki Co Ltd Blower device

Also Published As

Publication number Publication date
JP3709295B2 (en) 2005-10-26

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