WO2008044314A1 - Blower - Google Patents
Blower Download PDFInfo
- Publication number
- WO2008044314A1 WO2008044314A1 PCT/JP2006/320477 JP2006320477W WO2008044314A1 WO 2008044314 A1 WO2008044314 A1 WO 2008044314A1 JP 2006320477 W JP2006320477 W JP 2006320477W WO 2008044314 A1 WO2008044314 A1 WO 2008044314A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- casing
- pressure sensor
- blower
- pressing
- blower fan
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
- F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
- F04D29/703—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps specially for fans, e.g. fan guards
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G20/00—Cultivation of turf, lawn or the like; Apparatus or methods therefor
- A01G20/40—Apparatus for cleaning the lawn or grass surface
- A01G20/43—Apparatus for cleaning the lawn or grass surface for sweeping, collecting or disintegrating lawn debris
- A01G20/47—Vacuum or blower devices
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01H—STREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
- E01H1/00—Removing undesirable matter from roads or like surfaces, with or without moistening of the surface
- E01H1/08—Pneumatically dislodging or taking-up undesirable matter or small objects; Drying by heat only or by streams of gas; Cleaning by projecting abrasive particles
- E01H1/0809—Loosening or dislodging by blowing ; Drying by means of gas streams
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01H—STREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
- E01H1/00—Removing undesirable matter from roads or like surfaces, with or without moistening of the surface
- E01H1/08—Pneumatically dislodging or taking-up undesirable matter or small objects; Drying by heat only or by streams of gas; Cleaning by projecting abrasive particles
- E01H1/0827—Dislodging by suction; Mechanical dislodging-cleaning apparatus with independent or dependent exhaust, e.g. dislodging-sweeping machines with independent suction nozzles ; Mechanical loosening devices working under vacuum
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/04—Units comprising pumps and their driving means the pump being fluid-driven
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/008—Stop safety or alarm devices, e.g. stop-and-go control; Disposition of check-valves
Definitions
- the present invention relates to a blower that blows away objects such as dead leaves and twigs accumulated on the ground and cleans them, and sucks and cleans dust.
- blower for blowing away and cleaning objects such as dead leaves and twigs accumulated on the ground
- a blower fan provided in a casing, an engine for driving the blower fan to rotate, and a blower
- a blower provided with a blower duct for discharging an air flow generated by a blower fan to the outside.
- a grip portion is formed in the casing, and an operator can carry the blower with the grip portion. Then, the operator can blow away objects such as dead leaves and twigs and clean them by discharging a high-speed air flow toward the ground from the blower outlet of the blower pipe connected to the air duct.
- the blower casing is formed with an intake port for taking outside air into the casing, and when the blower fan is rotated, the outside air sucked into the intake loca casing is rotated.
- the fan creates a high-speed airflow.
- a cylindrical vacuum pipe is attached to the intake port, and a net-like dust collecting bag is attached to the air duct.
- the suction pipe dust in the vacuum pipe can be sucked and collected in the dust bag.
- the blower can be used as a vacuum cleaner.
- a blower includes an air feed fan provided in a casing, a drive device that rotationally drives the blower fan, and an air flow generated by the rotating blower fan.
- a blower comprising: a blower duct for discharging the air to the outside; a dust-proof cover covered by an air inlet formed in the casing; and a drive stop mechanism for stopping the drive device.
- the projection force provided on the cover is inserted into the mounting hole formed in the casing, so that the dust cover is attached to the casing.
- the drive stop mechanism includes a pressure sensor provided on the casing and one end of the pressure sensor.
- the other end is disposed in the mounting hole, and the other end is pressed by the protrusion inserted into the mounting hole, so that one end presses the detection portion of the pressure sensor.
- the drive unit When pressure is acting on the pressure lever and pressure sensor detector, the drive unit is set to a driveable state, and the pressure acting on the pressure sensor detector is reduced. And a control unit that sets the drive device to a stop state.
- the drive unit stops, and the rotation of the blower fan automatically stops.
- the dust cover is removed when the suction pipe is attached to or removed from the intake port, or when blowing air. This can improve safety when the air intake is exposed to the outside, such as when it has come off.
- control unit is configured to set the drive device to a stopped state when the pressing force acting on the pressing lever force pressure sensor is reduced, and the protruding portion extends from the mounting hole.
- the drive unit stops when it is not completely pulled out, that is, when the dust cover is loosened.
- the drive device is stopped before the intake port is exposed to the outside, and the rotation of the blower fan is stopped. Therefore, safety when removing the dust cover from the intake port can be improved.
- the pressing force acting on the pressure sensor fluctuates with the removal of the dust cover, and the control unit changes the driving state of the driving device based on the fluctuation of the pressing force. Can be easily switched.
- the intermediate portion of the press lever is exposed on the inner peripheral surface of the intake port, and the intermediate portion of the press lever is pressed by the suction pipe inserted into the intake port.
- the lever can be configured such that one end of the lever presses the detection part of the pressure sensor.
- the control unit switches the driving device from the stopped state to the drivable state.
- the driving state can be easily switched.
- FIG. 1 A diagram showing the blower of the present embodiment, and is a perspective view of a state in which a dustproof cover is closed and a front force is seen.
- FIG. 2 is a view showing the blower of the present embodiment, and is a perspective view of the state where the dust cover is opened as viewed from the front.
- FIG. 3 is a diagram showing a drive stop mechanism in the blower of the present embodiment, where (a) is a cross-sectional view with the dust-proof cover closed, and (b) is a cross-sectional view with the dust-proof cover open. .
- FIG. 4 is a schematic configuration diagram showing a drive stop mechanism in the blower of the present embodiment.
- FIG. 5 is a view showing the blower of the present embodiment, and is a perspective view of a state in which a vacuum pipe is attached as viewed from the front.
- FIG. 6 is a diagram showing a drive stop mechanism in the blower of the present embodiment, and is a cross-sectional view with a vacuum pipe attached.
- the front / rear / left / right direction is the direction seen from the operator when the blower is used, and corresponds to the front / rear / left / right direction shown in each figure.
- the blower 1 of the present embodiment shown in FIG. 1 is a power blower that blows and cleans objects such as dead leaves and twigs accumulated on the ground, and sucks and cleans dust.
- a blower fan (not shown) provided in the fan, a driving device 30 for rotationally driving the blower fan, and a blower outside 40 for discharging the air flow generated by the rotating blower fan to the outside.
- a drive stop mechanism (not shown) for setting the drive state of the drive device 30.
- a gripping part 50 is attached to the casing 10 and the drive device 30, and an operator can carry the blower 1 with the gripping part 50. Then, the worker can blow off dust such as dead leaves and twigs by discharging high-speed airflow toward the ground from the blower outlet of the blower pipe P1 connected to the air duct 40.
- a cylindrical vacuum pipe P 2 suction pipe
- Blower 1 can also be used as a vacuum tailor.
- the casing 10 is a box having a substantially circular shape when viewed from the side, and a blower fan (not shown) is disposed at the center thereof.
- a blower fan 20 shown in FIG. 3 has a plurality of blades 21 formed around a rotating shaft (not shown) that extends in the front-rear direction at the center of the casing 10.
- a high-speed empty space is formed from the outer side of the casing 10 toward the inner side. It is configured to generate airflow.
- an intake port 11 for taking outside air into the casing 10 is formed on the left side surface of the casing 10.
- the air inlet 11 has a circular shape when viewed from the front, and is formed at a position facing a blower fan (not shown) (see FIG. 3).
- a cylindrical air duct 40 for discharging the air flow generated by the rotating air blowing fan to the outside of the casing 10 is formed at the front portion of the casing 10.
- the drive device 30 is disposed on the right side of the casing 10, and an engine (not shown) is housed in a box-shaped engine cover 31 attached to the right side surface of the casing 10. ing.
- the output shaft of this engine is connected to the rotating shaft of a blower fan (not shown), and the blower fan is configured to rotate by the driving force of the engine of the drive device 30.
- a dust-proof cover 60 is installed at the intake port 11 (see Fig. 2) of the casing 10 to prevent foreign matter from being sucked in!
- an outer peripheral plate 62 is raised on the outer peripheral edge of the circular side plate 61 in a side view toward the casing 10.
- a lattice-like opening 63 is formed in the side plate 61 and the outer peripheral plate 62.
- the rear end portion of the outer peripheral plate 62 of the dustproof cover 60 is attached to the rear side of the intake port 11 on the left side surface of the casing 10 by a hinge 64.
- the dust cover 60 can be rotated in the front-rear direction around the hinge 64 as a rotation center, and can be opened and closed with respect to the air inlet port 11! /.
- a mounting screw 65 is provided at the front end portion of the outer peripheral plate 62 of the dustproof cover 60. As shown in FIG. 3 (a), the mounting screw 65 is provided with a knob 65b disposed on the outer surface side of the dust cover 60 and a projection 65b inserted through a through hole 66 formed in the dust cover 60. And structure A male screw is formed on the protrusion 65b. In addition, a rubber ring 65c is externally fitted to the protrusion 65b to prevent the through-hole 66 force from coming off.
- the projection 65b of the mounting screw 65 is inserted into the mounting hole 12 (see Fig. 2) formed in the casing 10 on the front side of the air inlet 11. Will be.
- a female thread is formed on the inner peripheral surface of the mounting hole 12.
- the drive stop mechanism 70 shown in FIG. 3 is set to a state where the engine 32 (see FIG. 4) of the drive unit 30 can be driven, and the intake port 11
- the control mechanism sets the engine 32 to the stop state.
- the drive stop mechanism 70 includes a pressure sensor 71 provided in the casing 10, a pressing lever 72 in contact with the detection portion 71a of the pressure sensor 71, and a pressure And a control unit 73 (see FIG. 4) for setting the driving state of the engine 32 of the driving device 30 based on a detection signal from the sensor 71.
- the pressure sensor 71 shown in FIG. 3 (b) is a known pressure sensor that detects a pressing force against the detection unit 71a and outputs a detection signal indicating the pressure fluctuation to the control unit 73 (see FIG. 4). Is not limited.
- the pressure sensor 71 is disposed in a hollow portion 13 formed in the casing 10 on the front side of the air inlet 11. When this hollow portion 13 opens to the inner peripheral surface of the intake port 11, Both are in communication with the opening on the inner side of the mounting hole 12.
- the pressure sensor 71 is arranged in the vicinity of the opening 13a on the intake port 11 side in the inner space 13.
- the pressing lever 72 is a substantially Z-shaped member in plan view, and is disposed in the hollow portion 13 formed in the casing 10. The base end of this pressing lever 72
- the base end portion 72a of the pressing lever 72 is disposed on the intake port 11 side in the hollow portion 13, and the front surface of the base end portion 72a is in contact with the detection portion 71a of the pressure sensor 71.
- a through hole 72e is formed in the base end portion 72a on the inner side of the contact portion with the pressure sensor 71, and the pressing lever 72 is moved by the fixed shaft 72d passed through the through hole 72e. It is supported by one single 10.
- the intermediate portion 72c on the outer side of the base end portion 72a is formed on the intake port 1.
- the intermediate portion 72c of the pressing lever 72 is extended outward from the base end portion 72a, and is directed forward from the outer end portion to a position facing the inner opening of the mounting hole 12. It has been extended.
- a tip 72b formed at a position facing the opening on the inner side of the mounting hole 12 is extended toward the outer side, and is inserted into the mounting hole 12. Has been inserted.
- the projection 65b of the mounting screw 65 of the dust cover 60 is inserted into the mounting hole 12 of the casing 10, that is, the dust cover 60 is closed.
- the projection 65 b of the mounting screw 65 is configured to press the tip 72 b of the pressing lever 72.
- the projection 65b of the mounting screw 65 of the dust cover 60 is not inserted into the mounting hole 12, that is, the dust cover 60 is open as shown in FIG. In Fig. 2, the pressing lever 72 does not tilt because no pressing force is applied to the tip 72b of the pressing lever 72. Accordingly, since the pressing force does not act on the detection unit 71a of the pressure sensor 71, no detection signal is output from the pressure sensor 71 to the control unit 73 (see FIG. 4).
- the control unit 73 shown in FIG. 4 controls the drive of the engine 32 based on the variation of the pressing force with respect to the detection unit 71a of the pressure sensor 71.
- the control unit 73 is configured using various known control circuits, and the configuration is not limited.
- the dust-proof cover 60 is closed (see Fig. 3 (a)) and the vacuum pipe P2 is inserted into the intake port 11 (see Fig. 6).
- Pressing lever 72 force When a pressing force is applied to the detecting portion 71a of the pressure sensor 71 and a detection signal is output from the pressure sensor 71, the engine 32 of the driving device 30 is set in a drivable state. In this state, the blower fan 20 can be rotated by driving the engine 32.
- the control unit 73 presses the dust cover 60 in a state where the dust cover 60 is open (see FIG. 3B).
- the engine 32 of the drive device 30 is set to the stop state. In this state, since the engine 32 is stopped, the rotation of the blower fan 20 is stopped. In addition, since the engine 32 cannot be driven, the blower fan 20 cannot be rotated by an erroneous operation.
- control unit 73 is configured to set the engine 32 of the drive device 30 to a stopped state even when the pressing force acting on the detection unit 71a of the pressure sensor 71 is reduced from the pressing lever 72. Has been.
- the pressing force acting on the detecting portion 71a of the pressure sensor 71 from the base end portion 72a of the pressing lever 72 also decreases, so the control unit 73 stops the engine 32 (see FIG. 4) of the driving device 30. Will be set to state.
- the engine 32 (see Fig. 4) of the driving device 30 is stopped.
- the projection 65b of the mounting screw 65 of the dust cover 60 is The engine 32 stops when the mounting screw 12 of the dust cover 60 is loosened, that is, when the mounting screw 65 of the dust cover 60 is not completely pulled out from the mounting hole 12 of the bracket 10.
- the engine 32 is stopped before the air intake 11 of the casing 10 is exposed to the outside, and the rotation of the blower fan 20 is stopped. Therefore, the safety when opening the dust cover 60 from the air intake 11 is improved. Can be increased.
- the control unit 73 controls the engine 32 of the drive device 30 based on the fluctuation of the pressing force. Since the driving state is changed, the driving state of the engine 32 can be easily switched.
- the detection unit 71a of the pressure sensor 71 is pressed by the pressing lever 72, and the control unit 73 (see FIG. 4) also drives the engine 32 in the stop state force. Since the state is switched to a possible state, the driving state of the engine 32 can be easily switched.
- the force of screwing the mounting screw 65 of the dustproof cover 60 into the mounting hole 12 of the casing 10 is the pin pin formed on the dustproof cover 60.
- the dust cover 60 is fixed to the casing 10 by fitting protrusions such as a hook into the mounting holes formed in the casing 10, and the pressing lever 7 is fixed by these protrusions.
- the dust cover 60 is attached to the casing 10 by the hinge 64 and is configured to open and close.
- the dust cover 60 It is also possible to remove the whole from the side surface of the casing 10.
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
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Abstract
A blower (1) having a fan (20) placed in a casing (10), a drive device (30) for rotating the fan (20), a dust protection cover (60) for covering an intake opening (11) of the casing (10), and a drive stop mechanism (70) for stopping the drive device (30). The drive stop mechanism (70) has a pressing lever (72) for pressing a pressure sensor (71) by being pressed by that projection (65b) of the dust protection cover (60) which is inserted in an installation hole (12) in the casing (10) and also has a control section (73) for stopping the drive device (30) when pressing force exerted on the pressure sensor (71) by the pressing lever (72) decreases. Because the fan (20) automatically stops rotating when the dust protection cover (60) is removed from the intake opening (11), safety when the intake opening (11) is exposed outward can be enhanced.
Description
ブロワ Blower
技術分野 Technical field
[0001] 本発明は、地面に堆積した枯葉や小枝等の対象物を吹き飛ばして清掃するととも に、塵を吸い込んで清掃するためのブロワに関する。 [0001] The present invention relates to a blower that blows away objects such as dead leaves and twigs accumulated on the ground and cleans them, and sucks and cleans dust.
背景技術 Background art
[0002] 地面に堆積した枯葉や小枝等の対象物を吹き飛ばして清掃するためのブロワとし ては、ケーシング内に設けられた送風ファンと、この送風ファンを回転駆動させるェン ジンと、回転する送風ファンによって発生した空気流を外部に排出させるための送風 ダクトと、を備えているブロワがある。 [0002] As a blower for blowing away and cleaning objects such as dead leaves and twigs accumulated on the ground, a blower fan provided in a casing, an engine for driving the blower fan to rotate, and a blower There is a blower provided with a blower duct for discharging an air flow generated by a blower fan to the outside.
[0003] このようなブロワでは、ケーシングに把持部が形成されており、作業者は把持部を 持ってブロワを携帯することができる。そして、作業者は、送風ダクトに連結されたブ ロワパイプの吹出口から、高速の空気流を地面に向けて吐出させることにより、枯葉 や小枝等の対象物を吹き飛ばして清掃することができる。 [0003] In such a blower, a grip portion is formed in the casing, and an operator can carry the blower with the grip portion. Then, the operator can blow away objects such as dead leaves and twigs and clean them by discharging a high-speed air flow toward the ground from the blower outlet of the blower pipe connected to the air duct.
[0004] また、ブロワのケーシングには、ケーシング内に外気を取り入れるための吸気口が 形成されており、送風ファンを回転させたときには、吸気ロカ ケーシング内に吸い 込まれた外気が、回転する送風ファンによって高速の空気流となる。 [0004] In addition, the blower casing is formed with an intake port for taking outside air into the casing, and when the blower fan is rotated, the outside air sucked into the intake loca casing is rotated. The fan creates a high-speed airflow.
[0005] ここで、前記した構成のブロワでは、例えば、特開 2005— 163765号公報に示す ように、吸気口に円筒状のバキュームパイプを取り付けるとともに、送風ダクトに網状 の集塵袋を取り付けることにより、バキュームパイプの吸込ロカ 塵を吸引して集塵 袋に集めることができる。このように、ブロワをバキュームクリーナとして利用することも できる。 Here, in the blower having the above-described configuration, for example, as shown in Japanese Patent Laid-Open No. 2005-163765, a cylindrical vacuum pipe is attached to the intake port, and a net-like dust collecting bag is attached to the air duct. As a result, the suction pipe dust in the vacuum pipe can be sucked and collected in the dust bag. In this way, the blower can be used as a vacuum cleaner.
[0006] なお、ブロワの吸気口には、異物の吸い込み防止のための防塵カバーが覆設され ているため、吸引口にバキュームパイプを取り付けるときには、防塵カバーを外して 吸気口を外部に露出させる必要がある。このとき、ケーシング内で送風ファンが回転 して 、る場合には、ブロワの取り扱 、を十分に注意しなければならな ヽと 、う問題が ある。
発明の開示 [0006] Since a dust-proof cover for preventing the inhalation of foreign substances is covered at the intake port of the blower, when attaching a vacuum pipe to the suction port, remove the dust-proof cover to expose the intake port to the outside. There is a need. At this time, if the blower fan rotates in the casing, there is a problem that the blower must be handled with great care. Disclosure of the invention
[0007] 前記した従来技術の問題に対処すベぐ本発明者は研究開発を進め、本発明を考 案するに至った。すなわち、吸気口から防塵カバーが外れるときに、送風ファンの回 転を自動的に停止させることができ、吸気口が外部に露出したときの安全性を高める ことができるブロワを提供することが、本発明の一側面である。 [0007] The present inventor who should deal with the problems of the prior art described above has advanced research and development and has come up with the present invention. That is, it is possible to provide a blower that can automatically stop the rotation of the blower fan when the dust cover is removed from the intake port and can improve safety when the intake port is exposed to the outside. It is one side of the present invention.
[0008] より具体的には、本発明の一側面としてのブロワは、ケーシング内に設けられた送 風ファンと、送風ファンを回転駆動させる駆動装置と、回転する送風ファンによって発 生した空気流を外部に排出させるための送風ダクトと、ケーシングに形成された吸気 口に覆設されている防塵カバーと、駆動装置を停止させるための駆動停止機構と、 を備えているブロワであって、防塵カバーに設けられた突起部力 ケーシングに形成 された取付穴に挿入されることにより、防塵カバーがケーシングに取り付けられており 、駆動停止機構は、ケーシングに設けられた圧力センサと、一端が圧力センサの検 出部に接触し、他端が取付穴に配設され、取付穴内に挿入された突起部によって他 端が押圧されることにより、一端が圧力センサの検出部を押圧する押圧レバーと、圧 力センサの検出部に押圧力が作用している場合に、駆動装置を駆動可能な状態に 設定し、圧力センサの検出部に作用している押圧力が減少した場合に、駆動装置を 停止状態に設定する制御部と、を備えていることを特徴としている。 More specifically, a blower according to one aspect of the present invention includes an air feed fan provided in a casing, a drive device that rotationally drives the blower fan, and an air flow generated by the rotating blower fan. A blower comprising: a blower duct for discharging the air to the outside; a dust-proof cover covered by an air inlet formed in the casing; and a drive stop mechanism for stopping the drive device. The projection force provided on the cover is inserted into the mounting hole formed in the casing, so that the dust cover is attached to the casing. The drive stop mechanism includes a pressure sensor provided on the casing and one end of the pressure sensor. The other end is disposed in the mounting hole, and the other end is pressed by the protrusion inserted into the mounting hole, so that one end presses the detection portion of the pressure sensor. When pressure is acting on the pressure lever and pressure sensor detector, the drive unit is set to a driveable state, and the pressure acting on the pressure sensor detector is reduced. And a control unit that sets the drive device to a stop state.
[0009] この構成では、吸気口から防塵カバーが外れるときに、防塵カバーの突起部がケ 一シングの取付穴から引き抜き方向に移動すると、突起部から押圧レバーの他端に 作用している押圧力が減少することになる。これに伴って、押圧レバーの一端力も圧 力センサの検出部に作用している押圧力も減少するため、制御部は駆動装置を停 止状態に設定することになる。 [0009] With this configuration, when the dust cover is removed from the air inlet, if the projection of the dust cover moves in the pulling direction from the mounting hole of the casing, the push acting on the other end of the press lever from the projection The pressure will decrease. Along with this, both the one end force of the pressing lever and the pressing force acting on the detection unit of the pressure sensor are reduced, so that the control unit sets the driving device to the stop state.
このように、吸気ロカ 防塵カバーが外れるときに、駆動装置が停止状態となり、送 風ファンの回転が自動的に停止するため、吸気口に吸引パイプを脱着する場合や、 送風作業時に防塵カバーが外れてしまった場合など、吸気口が外部に露出したとき の安全性を高めることができる。 In this way, when the intake rocker dust cover is removed, the drive unit stops, and the rotation of the blower fan automatically stops.Therefore, the dust cover is removed when the suction pipe is attached to or removed from the intake port, or when blowing air. This can improve safety when the air intake is exposed to the outside, such as when it has come off.
[0010] また、制御部では、押圧レバー力 圧力センサに作用している押圧力が減少した場 合に、駆動装置を停止状態に設定するように構成されており、突起部が取付穴から
完全に引き抜かれていない状態、すなわち、防塵カバーの取付箇所を緩めたときに 駆動装置が停止することになる。 [0010] In addition, the control unit is configured to set the drive device to a stopped state when the pressing force acting on the pressing lever force pressure sensor is reduced, and the protruding portion extends from the mounting hole. The drive unit stops when it is not completely pulled out, that is, when the dust cover is loosened.
このように、吸気口が外部に露出する前に、駆動装置が停止状態となり、送風ファ ンの回転が停止するため、吸気口から防塵カバーを外すときの安全性を高めることが できる。 In this way, the drive device is stopped before the intake port is exposed to the outside, and the rotation of the blower fan is stopped. Therefore, safety when removing the dust cover from the intake port can be improved.
[0011] また、防塵カバーの脱着に伴って圧力センサに作用する押圧力が変動し、この押 圧力の変動に基づいて、制御部が駆動装置の駆動状態を変更するため、駆動装置 の駆動状態を容易に切り替えることができる。 [0011] In addition, the pressing force acting on the pressure sensor fluctuates with the removal of the dust cover, and the control unit changes the driving state of the driving device based on the fluctuation of the pressing force. Can be easily switched.
[0012] 前記したブロワにおいて、押圧レバーの中間部は、吸気口の内周面に露出しており 、吸気口内に挿入された吸引パイプによって、押圧レバーの中間部が押圧されること により、押圧レバーの一端が圧力センサの検出部を押圧するように構成することがで きる。 [0012] In the blower described above, the intermediate portion of the press lever is exposed on the inner peripheral surface of the intake port, and the intermediate portion of the press lever is pressed by the suction pipe inserted into the intake port. The lever can be configured such that one end of the lever presses the detection part of the pressure sensor.
[0013] この構成では、吸気口に吸引パイプを取り付けることにより、押圧レバーによって圧 力センサの検出部が押圧され、制御部は駆動装置を停止状態から駆動可能な状態 に切り替えるため、駆動装置の駆動状態を容易に切り替えることができる。 [0013] In this configuration, by attaching the suction pipe to the intake port, the detection unit of the pressure sensor is pressed by the pressing lever, and the control unit switches the driving device from the stopped state to the drivable state. The driving state can be easily switched.
[0014] 前記した本発明の諸側面及び効果、並びに、他の効果及び更なる特徴は、添付の 図面を参照した後述する本発明の例示的かつ非制限的な実施の形態の詳細な説明 により、一層明らかになるであろう。 [0014] The aspects and advantages of the present invention described above, as well as other effects and further features will be described in detail with reference to the accompanying drawings and the following detailed description of exemplary and non-limiting embodiments of the present invention. It will become clearer.
図面の簡単な説明 Brief Description of Drawings
[0015] [図 1]本実施形態のブロワを示した図で、防塵カバーを閉じた状態を前方力 見た斜 視図である。 [0015] [Fig. 1] A diagram showing the blower of the present embodiment, and is a perspective view of a state in which a dustproof cover is closed and a front force is seen.
[図 2]本実施形態のブロワを示した図で、防塵カバーを開 ヽた状態を前方から見た斜 視図である。 FIG. 2 is a view showing the blower of the present embodiment, and is a perspective view of the state where the dust cover is opened as viewed from the front.
[図 3]本実施形態のブロワにおける駆動停止機構を示した図で、 (a)は防塵カバーが 閉じた状態の横断面図、(b)は防塵カバーが開いた状態の横断面図である。 FIG. 3 is a diagram showing a drive stop mechanism in the blower of the present embodiment, where (a) is a cross-sectional view with the dust-proof cover closed, and (b) is a cross-sectional view with the dust-proof cover open. .
[図 4]本実施形態のブロワにおける駆動停止機構を示した概略構成図である。 FIG. 4 is a schematic configuration diagram showing a drive stop mechanism in the blower of the present embodiment.
[図 5]本実施形態のブロワを示した図で、バキュームパイプを取り付けた状態を前方 力 見た斜視図である。
[図 6]本実施形態のブロワにおける駆動停止機構を示した図で、バキュームパイプを 取り付けた状態の横断面図である。 FIG. 5 is a view showing the blower of the present embodiment, and is a perspective view of a state in which a vacuum pipe is attached as viewed from the front. FIG. 6 is a diagram showing a drive stop mechanism in the blower of the present embodiment, and is a cross-sectional view with a vacuum pipe attached.
発明を実施するための最良の形態 BEST MODE FOR CARRYING OUT THE INVENTION
[0016] 次に、本発明の実施形態について、適宜図面を参照しながら詳細に説明する。な お、以下の説明において、前後左右方向とは、ブロワの使用時に作業者から見た方 向であり、各図に示す前後左右方向に対応している。 Next, embodiments of the present invention will be described in detail with reference to the drawings as appropriate. In the following description, the front / rear / left / right direction is the direction seen from the operator when the blower is used, and corresponds to the front / rear / left / right direction shown in each figure.
[0017] [ブロワの全体構成] [0017] [Blower overall configuration]
図 1に示す本実施形態のブロワ 1は、地面に堆積した枯葉や小枝等の対象物を吹 き飛ばして清掃するとともに、塵を吸い込んで清掃するための動力送風機であり、ケ 一シング 10内に設けられた送風ファン(図示せず)と、この送風ファンを回転駆動さ せるための駆動装置 30と、回転する送風ファンによって発生した空気流を外部に排 出させるための送風ダ外 40と、駆動装置 30の駆動状態を設定する駆動停止機構( 図示せず)と、を備えている。 The blower 1 of the present embodiment shown in FIG. 1 is a power blower that blows and cleans objects such as dead leaves and twigs accumulated on the ground, and sucks and cleans dust. A blower fan (not shown) provided in the fan, a driving device 30 for rotationally driving the blower fan, and a blower outside 40 for discharging the air flow generated by the rotating blower fan to the outside. And a drive stop mechanism (not shown) for setting the drive state of the drive device 30.
[0018] このブロワ 1では、ケーシング 10及び駆動装置 30に把持部 50が取り付けられてお り、作業者は把持部 50を持ってブロワ 1を携帯することができる。そして、作業者は、 送風ダクト 40に連結されたブロワパイプ P1の吹出口から、高速の空気流を地面に向 けて吐出させることにより、枯葉や小枝等の塵を吹き飛ばして清掃することができる。 In this blower 1, a gripping part 50 is attached to the casing 10 and the drive device 30, and an operator can carry the blower 1 with the gripping part 50. Then, the worker can blow off dust such as dead leaves and twigs by discharging high-speed airflow toward the ground from the blower outlet of the blower pipe P1 connected to the air duct 40.
[0019] また、本実施形態のブロワ 1では、図 5に示すように、ケーシング 10に形成された吸 気口 11に円筒状のバキュームパイプ P2 (吸引パイプ)を取り付けるとともに、送風ダ タト 40に網状の集塵袋 Bを取り付けることにより、バキュームパイプ P2の吸込口から 塵を吸引して集塵袋 Bに集めることができる。このように、ブロワ 1をバキュームタリー ナとして利用することもできる。 Further, in the blower 1 of the present embodiment, as shown in FIG. 5, a cylindrical vacuum pipe P 2 (suction pipe) is attached to the suction port 11 formed in the casing 10, and By attaching the net-shaped dust bag B, dust can be sucked from the suction port of the vacuum pipe P2 and collected in the dust bag B. In this way, Blower 1 can also be used as a vacuum tailor.
[0020] (ケーシング、送風ファン及び送風ダクトの構成) [0020] (Configuration of casing, blower fan and blower duct)
ケーシング 10は、図 1に示すように、側面視で略円形状の箱体であり、その中心部 には、送風ファン(図示せず)が配設されている。 As shown in FIG. 1, the casing 10 is a box having a substantially circular shape when viewed from the side, and a blower fan (not shown) is disposed at the center thereof.
図 3に示す送風ファン 20は、ケーシング 10の中心部で前後方向に延長された回転 軸(図示せず)の周囲に複数の羽根 21が形成されている。この送風ファン 20を回転 軸回りに回転させたときには、ケーシング 10の外方側から内方側に向けて高速の空
気流を発生するように構成されて ヽる。 A blower fan 20 shown in FIG. 3 has a plurality of blades 21 formed around a rotating shaft (not shown) that extends in the front-rear direction at the center of the casing 10. When the blower fan 20 is rotated about the rotation axis, a high-speed empty space is formed from the outer side of the casing 10 toward the inner side. It is configured to generate airflow.
[0021] また、図 2に示すように、ケーシング 10の左側面には、ケーシング 10内に外気を取 り入れるための吸気口 11が形成されている。この吸気口 11は、正面視で円形状とな つており、送風ファン(図示せず)を臨む位置に形成されて 、る(図 3参照)。 In addition, as shown in FIG. 2, an intake port 11 for taking outside air into the casing 10 is formed on the left side surface of the casing 10. The air inlet 11 has a circular shape when viewed from the front, and is formed at a position facing a blower fan (not shown) (see FIG. 3).
また、ケーシング 10の前部には、回転する送風ファンによって発生した空気流をケ 一シング 10の外部に排出するための円筒状の送風ダクト 40が形成されている。 In addition, a cylindrical air duct 40 for discharging the air flow generated by the rotating air blowing fan to the outside of the casing 10 is formed at the front portion of the casing 10.
[0022] そして、送風ファンを回転させたときには、吸気口 11からケーシング 10内に吸い込 まれた外気が、回転する送風ファンによって高速の空気流となる。この空気流は送風 ダクト 40を通じて外部に排出されることになる。 [0022] When the blower fan is rotated, the outside air sucked into the casing 10 from the intake port 11 becomes a high-speed air flow by the rotating blower fan. This air flow is discharged to the outside through the air duct 40.
[0023] (駆動装置の構成) [0023] (Configuration of Drive Device)
駆動装置 30は、図 1に示すように、ケーシング 10の右側に配設されており、ケーシ ング 10の右側面に取り付けられた箱状のエンジンカバー 31内にエンジン(図示せず )が収められている。このエンジンの出力軸は、送風ファン(図示せず)の回転軸に連 結されており、駆動装置 30のエンジンの駆動力によって、送風ファンが回転するよう に構成されている。 As shown in FIG. 1, the drive device 30 is disposed on the right side of the casing 10, and an engine (not shown) is housed in a box-shaped engine cover 31 attached to the right side surface of the casing 10. ing. The output shaft of this engine is connected to the rotating shaft of a blower fan (not shown), and the blower fan is configured to rotate by the driving force of the engine of the drive device 30.
[0024] (防塵カバーの構成) [0024] (Configuration of dustproof cover)
図 1に示すように、ケーシング 10の吸気口 11 (図 2参照)には、異物の吸い込み防 止のための防塵カバー 60が覆設されて!/、る。 As shown in Fig. 1, a dust-proof cover 60 is installed at the intake port 11 (see Fig. 2) of the casing 10 to prevent foreign matter from being sucked in!
防塵カバー 60は、側面視で円形状の側板 61の外周縁に、ケーシング 10側に向け て外周板 62が立ち上げられている。この側板 61及び外周板 62には、格子状の開口 部 63が形成されている。 In the dustproof cover 60, an outer peripheral plate 62 is raised on the outer peripheral edge of the circular side plate 61 in a side view toward the casing 10. A lattice-like opening 63 is formed in the side plate 61 and the outer peripheral plate 62.
[0025] 防塵カバー 60の外周板 62の後端部は、図 2に示すように、ケーシング 10の左側面 における吸気口 11の後方側に、ヒンジ 64によって取り付けられている。これにより、 防塵カバー 60は、ヒンジ 64を回動中心として、前後方向に回動可能となっており、吸 気口 11に対して開閉自在となって!/、る。 As shown in FIG. 2, the rear end portion of the outer peripheral plate 62 of the dustproof cover 60 is attached to the rear side of the intake port 11 on the left side surface of the casing 10 by a hinge 64. As a result, the dust cover 60 can be rotated in the front-rear direction around the hinge 64 as a rotation center, and can be opened and closed with respect to the air inlet port 11! /.
[0026] また、防塵カバー 60の外周板 62の前端部には、取付ねじ 65が設けられている。こ の取付ねじ 65は、図 3 (a)に示すように、防塵カバー 60の外面側に配置されたノブ 6 5aと、防塵カバー 60に形成された貫通穴 66に挿通されている突起部 65bとから構
成され、突起部 65bには雄ねじが形成されている。また、突起部 65bには、貫通穴 66 力 の抜け止めとして、ゴムリング 65cが外嵌されている。 Further, a mounting screw 65 is provided at the front end portion of the outer peripheral plate 62 of the dustproof cover 60. As shown in FIG. 3 (a), the mounting screw 65 is provided with a knob 65b disposed on the outer surface side of the dust cover 60 and a projection 65b inserted through a through hole 66 formed in the dust cover 60. And structure A male screw is formed on the protrusion 65b. In addition, a rubber ring 65c is externally fitted to the protrusion 65b to prevent the through-hole 66 force from coming off.
[0027] 防塵カバー 60を閉じたときには(図 1参照)、ケーシング 10において吸気口 11の前 方側に形成された取付穴 12内(図 2参照)に、取付ねじ 65の突起部 65bが挿入され ることになる。なお、取付穴 12の内周面には雌ねじが形成されている。 [0027] When the dust cover 60 is closed (see Fig. 1), the projection 65b of the mounting screw 65 is inserted into the mounting hole 12 (see Fig. 2) formed in the casing 10 on the front side of the air inlet 11. Will be. A female thread is formed on the inner peripheral surface of the mounting hole 12.
取付穴 12内に取付ねじ 65の突起部 65bが挿入された状態で、作業者が取付ねじ With the projection 65b of the mounting screw 65 inserted into the mounting hole 12, the operator
65のノブ 65aを把持して、取付ねじ 65全体を軸回りに回転させることにより、突起部 6By grasping the 65 knob 65a and rotating the entire mounting screw 65 around its axis, the projection 6
5bが取付穴 12に螺着される。このようにして、防塵カバー 60の前端部をケーシング5b is screwed into the mounting hole 12. In this way, attach the front end of the dust cover 60 to the casing.
10に固定することができる。 Can be fixed to 10.
[0028] そして、図 1に示すように、防塵カバー 60を閉じた状態で、送風ファン(図示せず) を回転させたときには、開口部 63から防塵カバー 60内に外気が取り込まれ、この外 気が吸気口 11 (図 2参照)を通じてケーシング 10内に吸い込まれることにより、回転 する送風ファンによって高速の空気流が発生する。 [0028] As shown in FIG. 1, when a blower fan (not shown) is rotated with the dustproof cover 60 closed, outside air is taken into the dustproof cover 60 from the opening 63. When air is sucked into the casing 10 through the intake port 11 (see FIG. 2), a high-speed air flow is generated by the rotating blower fan.
[0029] [駆動停止機構の構成] [0029] [Configuration of drive stop mechanism]
図 3に示す駆動停止機構 70は、吸気口 11に対して防塵カバー 60を閉じているとき には、駆動装置 30のエンジン 32 (図 4参照)の駆動可能な状態に設定し、吸気口 11 に対して防塵カバー 60を開いたときには、エンジン 32を停止状態に設定する制御機 構である。 When the dust cover 60 is closed with respect to the intake port 11, the drive stop mechanism 70 shown in FIG. 3 is set to a state where the engine 32 (see FIG. 4) of the drive unit 30 can be driven, and the intake port 11 When the dust cover 60 is opened, the control mechanism sets the engine 32 to the stop state.
[0030] この駆動停止機構 70は、図 3 (a)に示すように、ケーシング 10内に設けられた圧力 センサ 71と、圧力センサ 71の検出部 71aに接触している押圧レバー 72と、圧力セン サ 71からの検出信号に基づいて、駆動装置 30のエンジン 32の駆動状態を設定する 制御部 73 (図 4参照)と、を備えている。 [0030] As shown in Fig. 3 (a), the drive stop mechanism 70 includes a pressure sensor 71 provided in the casing 10, a pressing lever 72 in contact with the detection portion 71a of the pressure sensor 71, and a pressure And a control unit 73 (see FIG. 4) for setting the driving state of the engine 32 of the driving device 30 based on a detection signal from the sensor 71.
[0031] (圧力センサの構成) [0031] (Configuration of pressure sensor)
図 3 (b)に示す圧力センサ 71は、検出部 71aに対する押圧力を検出し、その圧力 変動を示す検出信号を制御部 73 (図 4参照)に出力する公知の圧力センサであり、 その構成は限定されるものではな 、。 The pressure sensor 71 shown in FIG. 3 (b) is a known pressure sensor that detects a pressing force against the detection unit 71a and outputs a detection signal indicating the pressure fluctuation to the control unit 73 (see FIG. 4). Is not limited.
また、圧力センサ 71は、ケーシング 10において吸気口 11の前方側に形成された 中空部 13内に配設されている。この中空部 13は、吸気口 11の内周面に開口すると
ともに、取付穴 12の内方側の開口部に連通している。そして、圧力センサ 71は、中 空部 13内において吸気口 11側の開口部 13aの近傍に配設されている。 Further, the pressure sensor 71 is disposed in a hollow portion 13 formed in the casing 10 on the front side of the air inlet 11. When this hollow portion 13 opens to the inner peripheral surface of the intake port 11, Both are in communication with the opening on the inner side of the mounting hole 12. The pressure sensor 71 is arranged in the vicinity of the opening 13a on the intake port 11 side in the inner space 13.
[0032] (押圧レバーの構成) [0032] (Configuration of pressing lever)
押圧レバー 72は、図 3 (b)に示すように、平面視で略 Z字形状の部材であり、ケー シング 10に形成された中空部 13内に配設されている。この押圧レバー 72の基端部 As shown in FIG. 3 (b), the pressing lever 72 is a substantially Z-shaped member in plan view, and is disposed in the hollow portion 13 formed in the casing 10. The base end of this pressing lever 72
72a (—端)は圧力センサ 71の検出部 71aに接触し、先端部 72b (他端)はケーシン グ 10の取付穴 12内に挿入されて!ヽる。 72a (the end) contacts the detection part 71a of the pressure sensor 71, and the tip part 72b (the other end) is inserted into the mounting hole 12 of the casing 10.
[0033] 押圧レバー 72の基端部 72aは、中空部 13内の吸気口 11側に配置されており、基 端部 72aの前面が圧力センサ 71の検出部 71aに接触している。 [0033] The base end portion 72a of the pressing lever 72 is disposed on the intake port 11 side in the hollow portion 13, and the front surface of the base end portion 72a is in contact with the detection portion 71a of the pressure sensor 71.
また、基端部 72aでは、圧力センサ 71との接触部位よりも内方側に貫通穴 72eが形 成されており、この貫通穴 72eに揷通された固定軸 72dによって、押圧レバー 72がケ 一シング 10に軸支されている。 In addition, a through hole 72e is formed in the base end portion 72a on the inner side of the contact portion with the pressure sensor 71, and the pressing lever 72 is moved by the fixed shaft 72d passed through the through hole 72e. It is supported by one single 10.
[0034] また、押圧レバー 72において、基端部 72aよりも外方側の中間部 72cは、吸気口 1[0034] In the pressing lever 72, the intermediate portion 72c on the outer side of the base end portion 72a is formed on the intake port 1.
1側の開口部 13a内に挿入されるように形成されている。したがって、押圧レバー 72 の中間部 72cは、開口部 13aから吸気口 11の内周面に露出している。 It is formed so as to be inserted into the opening 13a on the one side. Therefore, the intermediate portion 72c of the pressing lever 72 is exposed from the opening 13a to the inner peripheral surface of the intake port 11.
また、押圧レバー 72の中間部 72cは、基端部 72aから外方側に向けて延長されると ともに、外端部から取付穴 12の内方側の開口部に対向する位置まで前方に向けて 延長されている。 Further, the intermediate portion 72c of the pressing lever 72 is extended outward from the base end portion 72a, and is directed forward from the outer end portion to a position facing the inner opening of the mounting hole 12. It has been extended.
[0035] また、押圧レバー 72において、取付穴 12の内方側の開口部に対向する位置に形 成された先端部 72bは、外方側に向けて延長されており、取付穴 12内に挿入されて いる。 In addition, in the pressing lever 72, a tip 72b formed at a position facing the opening on the inner side of the mounting hole 12 is extended toward the outer side, and is inserted into the mounting hole 12. Has been inserted.
[0036] 図 3 (a)〖こ示すように、ケーシング 10の取付穴 12内に防塵カバー 60の取付ねじ 65 の突起部 65bが挿入されている状態、すなわち、防塵カバー 60が閉じている状態( 図 1参照)では、取付ねじ 65の突起部 65bが押圧レバー 72の先端部 72bを押圧する ように構成されている。 [0036] As shown in FIG. 3 (a), the projection 65b of the mounting screw 65 of the dust cover 60 is inserted into the mounting hole 12 of the casing 10, that is, the dust cover 60 is closed. In FIG. 1, the projection 65 b of the mounting screw 65 is configured to press the tip 72 b of the pressing lever 72.
[0037] このように、取付ねじ 65の突起部 65bが押圧レバー 72の先端部 72bを押圧した場 合には、押圧レバー 72の先端部 72bが内方側に押し込まれる。これにより、押圧レバ 一 72全体が固定軸 72dを回動中心として矢印 A方向に傾動する。
そして、押圧レバー 72全体が矢印 A方向に傾動することにより、押圧レバー 72の 基端部 72aが、圧力センサ 71の検出部 71aを押圧することになり、圧力センサ 71か ら制御部 73 (図 4参照)に対して検出信号が出力される。 [0037] As described above, when the protrusion 65b of the mounting screw 65 presses the tip 72b of the pressing lever 72, the tip 72b of the pressing lever 72 is pushed inward. As a result, the entire pressing lever 72 is tilted in the direction of arrow A with the fixed shaft 72d as the rotation center. Then, when the entire pressing lever 72 is tilted in the direction of arrow A, the base end portion 72a of the pressing lever 72 presses the detection unit 71a of the pressure sensor 71, and the control unit 73 (see FIG. 4)), a detection signal is output.
[0038] 一方、取付穴 12内に防塵カバー 60の取付ねじ 65の突起部 65bが挿入されていな い状態、すなわち、図 3 (b)に示すように、防塵カバー 60が開いている状態(図 2参 照)では、押圧レバー 72の先端部 72bに押圧力が作用しないため、押圧レバー 72は 傾動しない。したがって、圧力センサ 71の検出部 71aに押圧力が作用しないため、 圧力センサ 71から制御部 73 (図 4参照)に対して検出信号が出力されない。 [0038] On the other hand, the projection 65b of the mounting screw 65 of the dust cover 60 is not inserted into the mounting hole 12, that is, the dust cover 60 is open as shown in FIG. In Fig. 2, the pressing lever 72 does not tilt because no pressing force is applied to the tip 72b of the pressing lever 72. Accordingly, since the pressing force does not act on the detection unit 71a of the pressure sensor 71, no detection signal is output from the pressure sensor 71 to the control unit 73 (see FIG. 4).
[0039] さらに、防塵カバー 60が開いている状態において、図 6に示すように、吸気口 11に バキュームパイプ P2が挿入された場合には(図 5参照)、バキュームパイプ P2の外周 面に形成された係合突起部 P21が、中空部 13の吸気口 11側の開口部 13aに挿入 されること〖こなる。 [0039] Furthermore, when the vacuum pipe P2 is inserted into the intake port 11 (see FIG. 5) with the dust cover 60 open, as shown in FIG. 6, it is formed on the outer peripheral surface of the vacuum pipe P2. The engaged protrusion P21 thus inserted is inserted into the opening 13a of the hollow portion 13 on the intake port 11 side.
[0040] このように、開口部 13a内に挿入された係合突起部 P21によって、押圧レバー 72の 中間部 72cが押圧されることにより、中間部 72cが前方側に押し込まれる。これにより 、押圧レバー 72全体が固定軸 72dを回動中心として矢印 A方向に傾動する。 [0040] In this manner, the intermediate portion 72c of the pressing lever 72 is pressed forward by the engaging protrusion P21 inserted into the opening 13a, whereby the intermediate portion 72c is pushed forward. As a result, the entire pressing lever 72 tilts in the direction of arrow A with the fixed shaft 72d as the center of rotation.
そして、押圧レバー 72全体が矢印 A方向に傾動することにより、押圧レバー 72の 基端部 72aが、圧力センサ 71の検出部 71aを押圧することになり、圧力センサ 71か ら制御部 73 (図 4参照)に対して検出信号が出力される。 Then, when the entire pressing lever 72 is tilted in the direction of arrow A, the base end portion 72a of the pressing lever 72 presses the detection unit 71a of the pressure sensor 71, and the control unit 73 (see FIG. 4)), a detection signal is output.
[0041] (制御部の構成) [0041] (Configuration of control unit)
図 4に示す制御部 73は、圧力センサ 71の検出部 71aに対する押圧力の変動に基 づいて、エンジン 32の駆動を制御するものである。なお、制御部 73は、各種公知の 制御回路を用いて構成されており、その構成は限定されるものではない。 The control unit 73 shown in FIG. 4 controls the drive of the engine 32 based on the variation of the pressing force with respect to the detection unit 71a of the pressure sensor 71. The control unit 73 is configured using various known control circuits, and the configuration is not limited.
[0042] この制御部 73では、防塵カバー 60が閉じている状態(図 3 (a)参照)、及び吸気口 11にバキュームパイプ P2が挿入されて 、る状態(図 6参照)のように、押圧レバー 72 力 圧力センサ 71の検出部 71aに押圧力が作用して、圧力センサ 71から検出信号 が出力されている場合には、駆動装置 30のエンジン 32を駆動可能な状態に設定す る。この状態では、エンジン 32を駆動させて送風ファン 20を回転させることができる。 [0042] In this control unit 73, the dust-proof cover 60 is closed (see Fig. 3 (a)) and the vacuum pipe P2 is inserted into the intake port 11 (see Fig. 6). Pressing lever 72 force When a pressing force is applied to the detecting portion 71a of the pressure sensor 71 and a detection signal is output from the pressure sensor 71, the engine 32 of the driving device 30 is set in a drivable state. In this state, the blower fan 20 can be rotated by driving the engine 32.
[0043] また、制御部 73は、防塵カバー 60が開いている状態(図 3 (b)参照)のように、押圧
レバー 72から圧力センサ 71の検出部 71aに押圧力が作用しておらず、圧力センサ 7 1から検出信号が出力されていない状態では、駆動装置 30のエンジン 32を停止状 態に設定する。この状態では、エンジン 32が停止しているため、送風ファン 20の回 転が停止した状態となる。また、エンジン 32を駆動させることもできないため、誤操作 により送風ファン 20を回転させてしまうことがな 、。 [0043] In addition, the control unit 73 presses the dust cover 60 in a state where the dust cover 60 is open (see FIG. 3B). When the pressing force is not applied from the lever 72 to the detection unit 71a of the pressure sensor 71 and the detection signal is not output from the pressure sensor 71, the engine 32 of the drive device 30 is set to the stop state. In this state, since the engine 32 is stopped, the rotation of the blower fan 20 is stopped. In addition, since the engine 32 cannot be driven, the blower fan 20 cannot be rotated by an erroneous operation.
[0044] さらに、制御部 73では、押圧レバー 72から圧力センサ 71の検出部 71aに作用して いる押圧力が減少した場合にも、駆動装置 30のエンジン 32を停止状態に設定する ように構成されている。 [0044] Furthermore, the control unit 73 is configured to set the engine 32 of the drive device 30 to a stopped state even when the pressing force acting on the detection unit 71a of the pressure sensor 71 is reduced from the pressing lever 72. Has been.
したがって、図 3 (a)に示す取付ねじ 65が緩むことにより、押圧レバー 72から圧力 センサ 71の検出部 71aに作用している押圧力が減少した場合に、エンジン 32が停 止状態となる。この状態では、エンジン 32が停止しているため、送風ファン 20の回転 が停止した状態となる。また、エンジン 32を駆動させることもできないため、誤操作に より送風ファン 20を回転させてしまうことがな 、。 Accordingly, when the mounting screw 65 shown in FIG. 3A is loosened and the pressing force acting on the detecting portion 71a of the pressure sensor 71 from the pressing lever 72 is reduced, the engine 32 is stopped. In this state, since the engine 32 is stopped, the rotation of the blower fan 20 is stopped. In addition, since the engine 32 cannot be driven, the blower fan 20 cannot be rotated by an erroneous operation.
[0045] [ブロワの作用効果] [0045] [Function and effect of blower]
本実施形態のブロワ 1では、図 3に示すように、防塵カバー 60を開いたときに、防塵 カバー 60の取付ねじ 65の突起部 65b力 ケーシング 10の取付穴 12から引き抜き方 向に移動すると、突起部 65bから押圧レバー 72の先端部 72bに作用している押圧力 が減少することになる。 In the blower 1 of this embodiment, as shown in FIG. 3, when the dustproof cover 60 is opened, when the dustproof cover 60 is moved from the mounting hole 12 of the casing 10 in the pulling direction 65 b of the mounting screw 65 of the dustproof cover 60, The pressing force acting on the tip 72b of the pressing lever 72 from the protrusion 65b is reduced.
これに伴って、押圧レバー 72の基端部 72aから圧力センサ 71の検出部 71aに作用 している押圧力も減少するため、制御部 73は駆動装置 30のエンジン 32 (図 4参照) を停止状態に設定することになる。 Along with this, the pressing force acting on the detecting portion 71a of the pressure sensor 71 from the base end portion 72a of the pressing lever 72 also decreases, so the control unit 73 stops the engine 32 (see FIG. 4) of the driving device 30. Will be set to state.
このように、防塵カバー 60が開くときに、エンジン 32が停止状態となり、送風ファン 2 0の回転が自動的に停止するため、吸気口 11にバキュームパイプ P2を脱着する場 合(図 5参照)や、作業時に防塵カバー 60が外れてしまった場合など、吸気口 11が 外部に露出したときの安全性を高めることができる。 As described above, when the dust cover 60 is opened, the engine 32 is stopped, and the rotation of the blower fan 20 is automatically stopped. Therefore, when the vacuum pipe P2 is removed from the intake port 11 (see Fig. 5). In addition, safety can be improved when the air intake 11 is exposed to the outside, such as when the dust cover 60 is removed during work.
[0046] また、制御部 73 (図 4参照)では、押圧レバー 72から圧力センサ 71に作用している 押圧力が減少した場合に、駆動装置 30のエンジン 32 (図 4参照)を停止状態に設定 するように構成されており、防塵カバー 60の取付ねじ 65の突起部 65bが、ケーシン
グ 10の取付穴 12から完全に引き抜かれていない状態、すなわち、防塵カバー 60の 取付ねじ 65を緩めたときにエンジン 32が停止することになる。 [0046] Further, in the control unit 73 (see Fig. 4), when the pressing force acting on the pressure sensor 71 from the pressing lever 72 decreases, the engine 32 (see Fig. 4) of the driving device 30 is stopped. The projection 65b of the mounting screw 65 of the dust cover 60 is The engine 32 stops when the mounting screw 12 of the dust cover 60 is loosened, that is, when the mounting screw 65 of the dust cover 60 is not completely pulled out from the mounting hole 12 of the bracket 10.
このように、ケーシング 10の吸気口 11が外部に露出する前に、エンジン 32が停止 状態となり、送風ファン 20の回転が停止するため、吸気口 11から防塵カバー 60を開 けるときの安全性を高めることができる。 As described above, the engine 32 is stopped before the air intake 11 of the casing 10 is exposed to the outside, and the rotation of the blower fan 20 is stopped. Therefore, the safety when opening the dust cover 60 from the air intake 11 is improved. Can be increased.
[0047] また、防塵カバー 60の脱着に伴って、圧力センサ 71に作用する押圧力が変動し、 この押圧力の変動に基づいて、制御部 73 (図 4参照)が駆動装置 30のエンジン 32の 駆動状態を変更するため、エンジン 32の駆動状態を容易に切り替えることができる。 [0047] Further, as the dust cover 60 is attached and detached, the pressing force acting on the pressure sensor 71 fluctuates, and the control unit 73 (see FIG. 4) controls the engine 32 of the drive device 30 based on the fluctuation of the pressing force. Since the driving state is changed, the driving state of the engine 32 can be easily switched.
[0048] また、吸気口 11にバキュームパイプ P2を取り付けることにより、押圧レバー 72によ つて圧力センサ 71の検出部 71aが押圧され、制御部 73 (図 4参照)はエンジン 32を 停止状態力も駆動可能な状態に切り替えるため、エンジン 32の駆動状態を容易に 切り替えることができる。 [0048] Further, by attaching the vacuum pipe P2 to the intake port 11, the detection unit 71a of the pressure sensor 71 is pressed by the pressing lever 72, and the control unit 73 (see FIG. 4) also drives the engine 32 in the stop state force. Since the state is switched to a possible state, the driving state of the engine 32 can be easily switched.
[0049] [他の実施形態] [0049] [Other Embodiments]
以上、本発明の例示としての実施の形態を説明したが、添付の請求の範囲で定義 するところの本発明の精神及び範囲を逸脱しない限り、この実施の形態に対して様 々な修正や変更が可能である。 The exemplary embodiment of the present invention has been described above, but various modifications and changes may be made to this embodiment without departing from the spirit and scope of the present invention as defined in the appended claims. Is possible.
例えば、本実施形態では、図 3 (b)に示すように、防塵カバー 60の取付ねじ 65をケ 一シング 10の取付穴 12に螺着させている力 防塵カバー 60に形成されたピンゃフ ック等の突起部を、ケーシング 10に形成された取付穴に嵌合させることにより、防塵 カバー 60をケーシング 10に固定するとともに、これらの突起部によって押圧レバー 7 For example, in the present embodiment, as shown in FIG. 3 (b), the force of screwing the mounting screw 65 of the dustproof cover 60 into the mounting hole 12 of the casing 10 is the pin pin formed on the dustproof cover 60. The dust cover 60 is fixed to the casing 10 by fitting protrusions such as a hook into the mounting holes formed in the casing 10, and the pressing lever 7 is fixed by these protrusions.
2を押圧することちでさる。 Press 2 to press.
[0050] また、本実施形態では、図 2に示すように、防塵カバー 60はヒンジ 64によってケー シング 10に取り付けられており、防塵カバー 60が開閉するように構成されているが、 防塵カバー 60全体をケーシング 10の側面から取り外すように構成することもできる。
In the present embodiment, as shown in FIG. 2, the dust cover 60 is attached to the casing 10 by the hinge 64 and is configured to open and close. However, the dust cover 60 It is also possible to remove the whole from the side surface of the casing 10.
Claims
[1] ケーシング内に設けられた送風ファンと、前記送風ファンを回転駆動させる駆動装 置と、回転する前記送風ファンによって発生した空気流を外部に排出させるための送 風ダクトと、前記ケーシングに形成された吸気口に覆設されている防塵カバーと、前 記駆動装置を停止させるための駆動停止機構と、を備えているブロワであって、 前記防塵カバーに設けられた突起部が、前記ケーシングに形成された取付穴に挿 入されることにより、前記防塵カバーは前記ケーシングに取り付けられており、 前記駆動停止機構は、 [1] A blower fan provided in a casing, a drive device that rotationally drives the blower fan, a blower duct that discharges an air flow generated by the rotating blower fan to the outside, and the casing A blower comprising: a dustproof cover that covers the formed air inlet; and a drive stop mechanism for stopping the drive device, wherein the protrusion provided on the dustproof cover includes: The dust cover is attached to the casing by being inserted into a mounting hole formed in the casing, and the drive stop mechanism is
前記ケーシングに設けられた圧力センサと、 A pressure sensor provided in the casing;
一端が前記圧力センサの検出部に接触し、他端が前記取付穴に配設され、前記 取付穴内に挿入された前記突起部によって他端が押圧されることにより、一端が前 記圧力センサの検出部を押圧する押圧レバーと、 One end is in contact with the detection portion of the pressure sensor, the other end is disposed in the mounting hole, and the other end is pressed by the protrusion inserted into the mounting hole, so that one end of the pressure sensor is A pressing lever for pressing the detection unit;
前記圧力センサの検出部に押圧力が作用している場合に、前記駆動装置を駆動 可能な状態に設定し、前記圧力センサの検出部に作用している押圧力が減少した 場合に、前記駆動装置を停止状態に設定する制御部と、を備えていることを特徴と するブロワ。 The driving device is set in a driveable state when a pressing force is acting on the detection portion of the pressure sensor, and the driving is performed when the pressing force acting on the detection portion of the pressure sensor decreases. And a control unit for setting the apparatus to a stopped state.
[2] 前記押圧レバーの中間部は、前記吸気口の内周面に露出しており、前記吸気口内 に挿入された吸引パイプによって、前記押圧レバーの中間部が押圧されることにより 、前記押圧レバーの一端が前記圧力センサの検出部を押圧するように構成されてい ることを特徴とする請求の範囲第 1項に記載のブロワ。
[2] The intermediate portion of the pressing lever is exposed on the inner peripheral surface of the intake port, and the intermediate portion of the pressing lever is pressed by a suction pipe inserted into the intake port. 2. The blower according to claim 1, wherein one end of the lever is configured to press the detection portion of the pressure sensor.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2006/320477 WO2008044314A1 (en) | 2006-10-13 | 2006-10-13 | Blower |
US12/445,340 US20100086412A1 (en) | 2006-10-13 | 2006-10-13 | Blower |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2006/320477 WO2008044314A1 (en) | 2006-10-13 | 2006-10-13 | Blower |
Publications (1)
Publication Number | Publication Date |
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WO2008044314A1 true WO2008044314A1 (en) | 2008-04-17 |
Family
ID=39282526
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2006/320477 WO2008044314A1 (en) | 2006-10-13 | 2006-10-13 | Blower |
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US (1) | US20100086412A1 (en) |
WO (1) | WO2008044314A1 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
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JP5572060B2 (en) | 2010-10-22 | 2014-08-13 | 株式会社やまびこ | Air blower |
CN209908863U (en) * | 2016-09-30 | 2020-01-07 | 工机控股株式会社 | Blower fan |
US11744175B2 (en) | 2017-09-12 | 2023-09-05 | Black & Decker, Inc. | Convertible mower |
SE543870C2 (en) * | 2018-01-24 | 2021-08-17 | Husqvarna Ab | Leaf blower |
US11571101B2 (en) | 2018-09-07 | 2023-02-07 | Black & Decker, Inc. | Blowervac safety grill |
CN113576326B (en) * | 2021-07-07 | 2023-01-24 | 北京顺造科技有限公司 | Automatic cleaning equipment |
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JPS4886375U (en) * | 1972-01-21 | 1973-10-19 | ||
JPS55170715U (en) * | 1979-05-25 | 1980-12-08 | ||
JPS56115898A (en) * | 1980-02-18 | 1981-09-11 | Toshiba Corp | Safety device for electric fan |
JPS61283795A (en) * | 1985-04-08 | 1986-12-13 | マツカロツク コ−ポレ−シヨン | Vacuum equipment functioning as blast in combination |
JPS623197A (en) * | 1985-06-28 | 1987-01-09 | Sanyo Electric Co Ltd | Fan |
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US4998675A (en) * | 1989-11-29 | 1991-03-12 | Mohrman John H | Solid waste processing unit |
US6629818B2 (en) * | 2001-02-09 | 2003-10-07 | The Toro Company | Impeller for use with portable blower/vacuums |
JP4287261B2 (en) * | 2003-12-05 | 2009-07-01 | 本田技研工業株式会社 | Power blower |
CN100436700C (en) * | 2003-12-08 | 2008-11-26 | 松下电器产业株式会社 | Clothes drier |
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2006
- 2006-10-13 WO PCT/JP2006/320477 patent/WO2008044314A1/en active Application Filing
- 2006-10-13 US US12/445,340 patent/US20100086412A1/en not_active Abandoned
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Publication number | Priority date | Publication date | Assignee | Title |
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JPS4886375U (en) * | 1972-01-21 | 1973-10-19 | ||
JPS55170715U (en) * | 1979-05-25 | 1980-12-08 | ||
JPS56115898A (en) * | 1980-02-18 | 1981-09-11 | Toshiba Corp | Safety device for electric fan |
JPS61283795A (en) * | 1985-04-08 | 1986-12-13 | マツカロツク コ−ポレ−シヨン | Vacuum equipment functioning as blast in combination |
JPS623197A (en) * | 1985-06-28 | 1987-01-09 | Sanyo Electric Co Ltd | Fan |
JPS6371494U (en) * | 1986-10-29 | 1988-05-13 |
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