JP7418162B2 - vacuum cleaner - Google Patents

vacuum cleaner Download PDF

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JP7418162B2
JP7418162B2 JP2019120020A JP2019120020A JP7418162B2 JP 7418162 B2 JP7418162 B2 JP 7418162B2 JP 2019120020 A JP2019120020 A JP 2019120020A JP 2019120020 A JP2019120020 A JP 2019120020A JP 7418162 B2 JP7418162 B2 JP 7418162B2
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bumper
suction port
brush
vacuum cleaner
bent portion
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JP2021003509A (en
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満久 廣田
真浩 吉田
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Sharp Corp
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Sharp Corp
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Priority to JP2019120020A priority Critical patent/JP7418162B2/en
Priority to CN202010584069.9A priority patent/CN112137496A/en
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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/02—Nozzles
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/02—Nozzles
    • A47L9/04—Nozzles with driven brushes or agitators
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/02—Nozzles
    • A47L9/04—Nozzles with driven brushes or agitators
    • A47L9/0405—Driving means for the brushes or agitators
    • A47L9/0411—Driving means for the brushes or agitators driven by electric motor
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/28—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means
    • A47L9/2836—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means characterised by the parts which are controlled
    • A47L9/2842—Suction motors or blowers

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nozzles For Electric Vacuum Cleaners (AREA)
  • Electric Vacuum Cleaner (AREA)

Description

本発明は、電気掃除機に関する。 The present invention relates to a vacuum cleaner.

従来の電気掃除機として、特許文献１には、吸込口体のバンパーが室内の壁に接触すると、その接触状態がバンパーの内側に設けられた検知部（発光素子または感圧センサ）にて検知され、検知部から検知信号が掃除機本体内に設けられた制御部へ送信され、その検知信号に基づいて制御部は掃除機本体内に設けられた電動送風機の出力を増加させて壁際の塵埃を吸引除去するように構成された電気掃除機が提案されている。 As a conventional vacuum cleaner, Patent Document 1 states that when the bumper of the suction port contacts the indoor wall, the contact state is detected by a detection unit (light-emitting element or pressure-sensitive sensor) provided inside the bumper. A detection signal is sent from the detection unit to the control unit installed inside the vacuum cleaner body, and based on the detection signal, the control unit increases the output of the electric blower installed inside the vacuum cleaner body to remove dust near the wall. A vacuum cleaner has been proposed that is configured to suction and remove.

また、特許文献２には、吸込口体の前端に距離センサが設けられ、室内の壁と吸込口体との間の距離が距離センサにて検知され、距離センサから検知信号が掃除機本体内に設けられた制御部へ送信され、壁と吸込口体との間の距離が所定距離以下となった情報を含む検知信号に基づいて制御部は掃除機本体内に設けられた電動送風機の出力を増加させて壁際の塵埃を吸引除去するように構成された電気掃除機が提案されている。 Further, in Patent Document 2, a distance sensor is provided at the front end of the suction port body, the distance between the indoor wall and the suction port body is detected by the distance sensor, and a detection signal from the distance sensor is sent inside the vacuum cleaner body. Based on the detection signal that includes information that the distance between the wall and the suction port is less than a predetermined distance, the control unit controls the output of the electric blower installed inside the vacuum cleaner body. A vacuum cleaner has been proposed that is configured to increase the amount of dust near the wall and remove it by suction.

特開平５－２５３１４５号公報Japanese Patent Application Publication No. 5-253145 特開２０１９－６３３５４号公報JP 2019-63354 Publication

特許文献１および２に記載の電気掃除機の場合、吸込口体が壁に近接した状態をセンサ（発光素子、感圧センサ、距離センサ等）によって検知するようにしているため、コストアップとなっていた。また、吸込口体のバンパーが設けられた前端にセンサを設ける必要があるため、バンパーの周辺構造が複雑化していた。 In the case of the vacuum cleaners described in Patent Documents 1 and 2, the state in which the suction port body is close to the wall is detected by a sensor (a light emitting element, a pressure sensor, a distance sensor, etc.), which increases the cost. was. Furthermore, since it is necessary to provide a sensor at the front end of the suction port body where the bumper is provided, the structure around the bumper has become complicated.

本発明は、このような事情に鑑みなされた電気掃除機を提供することを目的とする。 An object of the present invention is to provide a vacuum cleaner made in view of such circumstances.

本発明によれば、電動送風機および集塵部が設けられた掃除機本体と、前記掃除機本体に直接または延長管を介して接続される吸込口体とを備え、
前記吸込口体は、吸込口が設けられた底部を有する筐体と、前記筐体内の前記吸込口の近傍に設けられた回転ブラシと、前記筐体内に設けられて前記回転ブラシを回転させるブラシ用モータと、前記筐体が前進する方向の前端に左右方向の軸心を中心として揺動可能に設けられたバンパーとを有し、
前記掃除機本体は、前記電動送風機および前記ブラシ用モータを制御可能、かつ、前記ブラシ用モータの負荷を検知可能な制御部を有し、
前記バンパーが障害物に当接することによって後方へ揺動して回転する前記回転ブラシに接触し、それによって前記ブラシ用モータの負荷が所定値以上に増加したときに、前記制御部が前記電動送風機の出力を増加させるように構成された電気掃除機が提供される。
また、本発明によれば、電動送風機および集塵部が設けられた掃除機本体と、前記掃除機本体に直接または延長管を介して接続される吸込口体とを備え、
前記吸込口体は、吸込口が設けられた底部を有する筐体と、前記筐体内の前記吸込口の近傍に設けられた回転ブラシと、前記筐体内に設けられて前記回転ブラシを回転させるブラシ用モータと、前記筐体が前進する方向の前端に左右方向の軸心を中心として揺動可能に設けられたバンパーとを有し、
前記掃除機本体は、前記電動送風機および前記ブラシ用モータを制御可能、かつ、前記ブラシ用モータの負荷を検知可能な制御部を有し、
前記バンパーが障害物に当接することによって後方へ揺動して回転する前記回転ブラシに接触し、それによって前記ブラシ用モータの負荷が所定値以上に増加したときに、前記制御部が吸引力を増加させるように構成された電気掃除機が提供される。 According to the present invention, the present invention includes a vacuum cleaner main body provided with an electric blower and a dust collection section, and a suction port body connected to the vacuum cleaner main body directly or via an extension pipe,
The suction port body includes a casing having a bottom portion provided with a suction port, a rotating brush provided in the vicinity of the suction port within the casing, and a brush provided within the casing that rotates the rotating brush. and a bumper that is swingably provided at the front end in the direction in which the housing moves forward, about an axis in the left and right direction,
The vacuum cleaner main body has a control unit that can control the electric blower and the brush motor and can detect the load on the brush motor,
When the bumper comes into contact with the rotating brush that swings backward due to contact with an obstacle, and the load on the brush motor increases to a predetermined value or more, the control unit controls the electric blower. A vacuum cleaner configured to increase the output of a vacuum cleaner is provided.
Further, according to the present invention, the present invention includes a vacuum cleaner main body provided with an electric blower and a dust collection section, and a suction port body connected to the vacuum cleaner main body directly or via an extension pipe,
The suction port body includes a casing having a bottom portion provided with a suction port, a rotating brush provided in the vicinity of the suction port within the casing, and a brush provided within the casing that rotates the rotating brush. and a bumper that is swingably provided at the front end in the direction in which the housing moves forward, about an axis in the left and right direction,
The vacuum cleaner main body has a control unit that can control the electric blower and the brush motor and can detect the load on the brush motor,
When the bumper comes into contact with the rotating brush that swings backward due to contact with an obstacle, and thereby the load on the brush motor increases to a predetermined value or more, the control section applies a suction force. A vacuum cleaner is provided that is configured to increase.

本発明の電気掃除機によれば、壁際清掃時の吸引力制御を容易に行うことができる。 According to the vacuum cleaner of the present invention, suction force control during wall cleaning can be easily performed.

本発明の電気掃除機の第１実施形態を示す斜視図である。BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view which shows 1st Embodiment of the vacuum cleaner of this invention. 第１実施形態の電気掃除機における吸込口体を示す斜視図である。It is a perspective view showing the suction mouth body in the vacuum cleaner of a 1st embodiment. 第１実施形態の吸込口体の平面図である。It is a top view of the suction port body of 1st Embodiment. 第１実施形態の吸込口体の正面図である。It is a front view of the suction port body of 1st Embodiment. 第１実施形態の吸込口体の右側面図である。It is a right view of the suction port body of 1st Embodiment. 第１実施形態の吸込口体の底面図である。It is a bottom view of the suction port body of 1st Embodiment. 図４のＩ－Ｉ線矢視断面図である。5 is a sectional view taken along the line II in FIG. 4. FIG. 第１実施形態の吸込口体のバンパーを室内の壁面に軽く当接させた状態を示す説明図である。It is an explanatory view showing the state where the bumper of the suction port body of a 1st embodiment was brought into light contact with the wall surface of the room. 第１実施形態の吸込口体のバンパーを室内の壁面に押し当てた状態を示す説明図である。It is an explanatory view showing a state where the bumper of the suction port body of the first embodiment is pressed against the wall surface of the room. 図９の状態のときの吸込口体の内部構造を示す説明図である。10 is an explanatory diagram showing the internal structure of the suction port body in the state of FIG. 9. FIG. 図９の状態のときの制御部による電動送風機の出力制御を説明する図である。10 is a diagram illustrating output control of the electric blower by the control unit in the state of FIG. 9. FIG. 第１実施形態の吸込口体の左側の角部を室内の床面上の隅部に押し当てた底面側から視た状態を示す説明図である。It is an explanatory view showing a state where the left corner of the suction port body of the first embodiment is viewed from the bottom surface side pressed against a corner on the floor surface of the room. 図１２で示した吸込口体における角部付近を拡大した説明図である。FIG. 13 is an enlarged explanatory view of the vicinity of a corner of the suction port body shown in FIG. 12; 第２実施形態の吸込口体におけるバンパー形状とブラシ毛の硬さとの関係を説明する図である。It is a figure explaining the relationship between the bumper shape and the hardness of a brush bristle in the suction port body of 2nd Embodiment. 第３実施形態の吸込口体におけるバンパー形状とブラシ毛の硬さとの関係を説明する図である。It is a figure explaining the relationship between the bumper shape and the hardness of a brush bristle in the suction port body of 3rd Embodiment.

（第１実施形態）
＜電気掃除機の全体構成＞
図１は本発明の電気掃除機の第１実施形態を示す斜視図である。
図１に示すように、この電気掃除機１は、掃除機本体１０と、掃除機本体１０に着脱可能に装着されるバッテリー４０と、本発明の吸込口体５０と、掃除機本体１０と吸込口体５０とを着脱可能に接続する延長パイプ６０とを備える。なお、第１実施形態では、代表的にコードレスタイプのスティック型電気掃除機を例示しているが、本発明の吸込口体５０はハンディ型、キャニスター型、アップライト型等の電気掃除機にも適用可能である。 (First embodiment)
<Overall configuration of vacuum cleaner>
FIG. 1 is a perspective view showing a first embodiment of the vacuum cleaner of the present invention.
As shown in FIG. 1, this vacuum cleaner 1 includes a vacuum cleaner main body 10, a battery 40 that is removably attached to the vacuum cleaner main body 10, a suction port body 50 of the present invention, a vacuum cleaner main body 10 and a suction It includes an extension pipe 60 that is detachably connected to the mouth body 50. In addition, in the first embodiment, a cordless stick-type vacuum cleaner is typically illustrated, but the suction port body 50 of the present invention can also be applied to a handy-type, canister-type, upright-type vacuum cleaner, etc. Applicable.

掃除機本体１０は、電動送風機２６（図１１参照）を内蔵する駆動装置２０と、駆動装置２０に着脱可能に装着される集塵部としての集塵装置３０とを備える。 The cleaner main body 10 includes a drive device 20 that includes an electric blower 26 (see FIG. 11), and a dust collector 30 as a dust collector that is detachably attached to the drive device 20.

駆動装置２０は、制御部２５と、バッテリー４０の装着部に設けられてバッテリー４０の複数の給電端子と電気的に接続可能な複数の受電端子（不図示）とを有し、複数の受電端子はリード線を介して制御部２５と電気的に接続されている。
また、駆動装置２０は操作スイッチ２１を有するハンドル２２を後部に有しており、操作スイッチ２１はリード線を介して制御部２５と電気的に接続されている。 The drive device 20 includes a control unit 25 and a plurality of power receiving terminals (not shown) that are provided in a mounting portion of the battery 40 and can be electrically connected to the plurality of power feeding terminals of the battery 40. is electrically connected to the control section 25 via lead wires.
Further, the drive device 20 has a handle 22 having an operation switch 21 at the rear thereof, and the operation switch 21 is electrically connected to the control section 25 via a lead wire.

制御部２５は、電気掃除機１を制御する部分であり、例えば、演算部、記憶部等を有する。制御部２５は、例えば、演算部、記憶部、タイマー、入出力ポートなどを有するマイクロコントローラを含むことができる。演算部は、例えば、ＣＰＵ、ＧＰＵ、ＦＰＧＡなどである。記憶部は、マスクROM, EPROM, EEPROM, フラッシュメモリ（不揮発性メモリ）などのROMと、FeRAM, SRAM, DRAMなどのRAMを含むことができる。
制御部２５は、複数の制御基板から構成されてもよい。これらの複数の制御基板は信号線又は電力線で接続することができる。制御部２５は、例えば、電動送風機用駆動回路を備えた制御基板、回転ブラシ用駆動回路を備えた制御基板、充電回路を備えた制御基板、マイクロコントローラなどから構成される。 The control unit 25 is a part that controls the vacuum cleaner 1, and includes, for example, a calculation unit, a storage unit, and the like. The control unit 25 can include, for example, a microcontroller having a calculation unit, a storage unit, a timer, an input/output port, and the like. The calculation unit is, for example, a CPU, GPU, FPGA, or the like. The storage unit can include ROM such as mask ROM, EPROM, EEPROM, and flash memory (nonvolatile memory), and RAM such as FeRAM, SRAM, and DRAM.
The control unit 25 may be composed of a plurality of control boards. These plural control boards can be connected by signal lines or power lines. The control unit 25 includes, for example, a control board with an electric blower drive circuit, a control board with a rotating brush drive circuit, a control board with a charging circuit, a microcontroller, and the like.

集塵装置３０は、集塵容器３１と、集塵容器３１に着脱可能に装着されるフィルター部３２とを有し、集塵容器３１内に空気と共に流入した比較的大きな塵埃を空気から遠心分離し、比較的小さな塵埃をフィルター部３２にて捕捉するように構成されている。 The dust collection device 30 includes a dust collection container 31 and a filter section 32 that is detachably attached to the dust collection container 31, and centrifugally separates relatively large dust that has flowed into the dust collection container 31 together with the air from the air. However, the filter section 32 is configured to capture relatively small dust particles.

＜吸込口体について＞
図２は第１実施形態の電気掃除機における吸込口体を示す斜視図であり、図３は第１実施形態の吸込口体の平面図であり、図４は第１実施形態の吸込口体の正面図である。また、図５は第１実施形態の吸込口体の右側面図であり、図６は第１実施形態の吸込口体の底面図であり、図７は図４のＩ－Ｉ線矢視断面図である。なお、図２、図３、図５～図７において、吸込口体の前後上下左右の方向を矢印にて示している。 <About the suction port>
FIG. 2 is a perspective view showing the suction port body of the vacuum cleaner of the first embodiment, FIG. 3 is a plan view of the suction port body of the first embodiment, and FIG. 4 is a perspective view of the suction port body of the first embodiment. FIG. 5 is a right side view of the suction port body of the first embodiment, FIG. 6 is a bottom view of the suction port body of the first embodiment, and FIG. 7 is a cross section taken along the line II in FIG. It is a diagram. Note that in FIGS. 2, 3, and 5 to 7, the front, rear, top, bottom, left, and right directions of the suction port body are indicated by arrows.

図２～図７に示すように、吸込口体５０は、吸込口本体５１と、吸込口本体５１に連結された関節部５８と、関節部５８に連結された接続管部５９とを備える。
吸込口本体５１は、吸込口５１ａが設けられた底部５２ａと、周囲部５２ｂと、上部５２ｃとを有する筐体５２を備えると共に、筐体５２の周囲部５２ｂの前端に設けられたバンパー５３を備える。 As shown in FIGS. 2 to 7, the suction port body 50 includes a suction port body 51, a joint portion 58 connected to the suction port body 51, and a connecting pipe portion 59 connected to the joint portion 58.
The suction port main body 51 includes a housing 52 having a bottom portion 52a provided with a suction port 51a, a peripheral portion 52b, and an upper portion 52c, and a bumper 53 provided at the front end of the peripheral portion 52b of the housing 52. Be prepared.

筐体５２の底部５２ａは、略Ｔ字形（図６参照）に形成されており、底部５２ａの前部５２ａａは左右方向に延び、後部５２ａｂは前部５２ａａの左右方向の中間部から後方へ突出している。
後部５２ａｂは略Ｕ字形に形成されており、後部５２ａｂの下方に関節部５８が露出している。また、後部５２ａｂの後部下面には後部ローラ５４が設けられている。なお、後部５２ａｂの形状は略Ｕ字形に限定されず、例えば、関節部５８が露出していない平面部に後部ローラ５４が設けられた形状でもよい。 The bottom portion 52a of the housing 52 is formed in a substantially T-shape (see FIG. 6), and the front portion 52aa of the bottom portion 52a extends in the left-right direction, and the rear portion 52ab protrudes rearward from the middle portion of the front portion 52aa in the left-right direction. ing.
The rear portion 52ab is formed into a substantially U-shape, and a joint portion 58 is exposed below the rear portion 52ab. Further, a rear roller 54 is provided on the rear lower surface of the rear portion 52ab. Note that the shape of the rear portion 52ab is not limited to a substantially U-shape, and may be, for example, a shape in which the rear roller 54 is provided on a flat surface where the joint portion 58 is not exposed.

また、底部５２ａは、前部５２ａａの前端側に左右方向に延びる前記吸込口５１ａを有しており、吸込口５１ａの前端は開放している。
また、底部５２ａの前部５２ａａにおける左右両端部（吸込口５１ａの左右側）の前端側には、筐体５２が床面Ｆ上に載置された状態において前方へ向かうにつれて床面Ｆから離れる方向に傾斜した左右一対の傾斜面部５２ａｘが設けられている。なお、第１実施形態では凸曲面状の傾斜面部５２ａｘを例示しているが、傾斜面部は平坦面でもよい。 Further, the bottom portion 52a has the suction port 51a extending in the left-right direction on the front end side of the front portion 52aa, and the front end of the suction port 51a is open.
In addition, on the front end sides of both left and right ends (left and right sides of the suction port 51a) of the front part 52aa of the bottom part 52a, there is a part that moves away from the floor surface F as it goes forward when the housing 52 is placed on the floor surface F. A pair of left and right inclined surface portions 52ax are provided that are inclined in the direction. In the first embodiment, the inclined surface portion 52ax having a convex curved surface shape is illustrated, but the inclined surface portion may be a flat surface.

底部５２ａの吸込口５１ａの左右側において、傾斜面部５２ａｘよりも後方部分は略平坦面となっており、この略平坦面から傾斜面部５２ａｘに亘ってシート状部材５７が設けられている。なお、シート状部材５７について詳しくは後述する。
また、底部５２ａの後部の右側には、車輪を有する床面検知スイッチ５５が設けられている。 On the left and right sides of the suction port 51a of the bottom portion 52a, a portion rearward of the inclined surface portion 52ax is a substantially flat surface, and a sheet-like member 57 is provided extending from this substantially flat surface to the inclined surface portion 52ax. Note that the sheet-like member 57 will be described in detail later.
Furthermore, a floor surface detection switch 55 having wheels is provided on the right side of the rear portion of the bottom portion 52a.

周囲部５２ｂは、底部５２ａの吸込口５１ａを含む前部５２ａａを前後左右から包囲する部分である。
上部５２ｃは、周囲部５２ｂと連設されて底部５２ａを覆う部分であり、後端側の左右方向の中間部に関節部５８を嵌め入れる凹部５２ｃａを有している。さらに、上部５２ｃの前端の左右両端側には、バンパー５３の上バンパー５３ａの左右一対の取付片５３ａａが差し込まれるよう後方へ凹んだ左右一対の取付凹部５２ｃｂが設けられている。 The peripheral portion 52b is a portion that surrounds the front portion 52aa including the suction port 51a of the bottom portion 52a from the front, back, right and left.
The upper part 52c is a part that is connected to the surrounding part 52b and covers the bottom part 52a, and has a recessed part 52ca into which the joint part 58 is fitted in the middle part in the left-right direction on the rear end side. Furthermore, a pair of left and right attachment recesses 52cb are provided on both left and right end sides of the front end of the upper portion 52c, which are recessed rearward into which a pair of left and right attachment pieces 53aa of the upper bumper 53a of the bumper 53 are inserted.

図８は第１実施形態の吸込口体のバンパーを室内の壁面に軽く当接させた状態を示す説明図であり、図９は第１実施形態の吸込口体のバンパーを室内の壁面に押し当てた状態を示す説明図である。また、図１０は図９の状態のときの吸込口体の内部構造を示す説明図であり、図１１は図９の状態のときの制御部による電動送風機の出力制御を説明する図である。
図２～図１１に示すように、バンパー５３は、前記左右一対の取付片５３ａａを有する上バンパー５３ａと、上バンパー５３ａの下端縁に沿って設けられた下バンパー５３ｂとを有する。 FIG. 8 is an explanatory diagram showing a state in which the bumper of the suction port body of the first embodiment is lightly abutted against the wall surface of the room, and FIG. 9 is an explanatory diagram showing a state in which the bumper of the suction port body of the first embodiment is pressed against the wall surface of the room It is an explanatory diagram showing the state where it hit. Moreover, FIG. 10 is an explanatory diagram showing the internal structure of the suction port body in the state of FIG. 9, and FIG. 11 is a diagram illustrating the output control of the electric blower by the control unit in the state of FIG. 9.
As shown in FIGS. 2 to 11, the bumper 53 includes an upper bumper 53a having the pair of left and right mounting pieces 53aa, and a lower bumper 53b provided along the lower edge of the upper bumper 53a.

上バンパー５３ａの左右一対の取付片５３ａａはそれぞれ左右側面を有し、それらの各左右側面には左右方向の同一軸心上に凸部が設けられている。一方、筐体５２の左右一対の取付凹部５２ｃｂはそれぞれ左右内側面を有し、それらの各左右内側面には左右方向の同一軸心Ｐ１上に凹部が設けられている（図２参照）。 The pair of left and right mounting pieces 53aa of the upper bumper 53a each have left and right side surfaces, and a convex portion is provided on each of the left and right side surfaces on the same axis in the left and right direction. On the other hand, the pair of left and right mounting recesses 52cb of the housing 52 each have left and right inner surfaces, and a recess is provided on each of the left and right inner surfaces on the same axis P1 in the left and right direction (see FIG. 2).

上バンパー５３ａを筐体５２に取り付ける際、上バンパー５３ａの左右一対の取付片５３ａａを筐体５２の左右一対の取付凹部５２ｃｂに差し込むことにより、上バンパー５３ａの左右一対の取付片５３ａａの各凸部が、筐体５２の左右一対の取付凹部５２ｃｂの各凹部に嵌り込む。これにより、上バンパー５３ａが軸心Ｐ１を中心に揺動可能に筐体５２に取り付けられることとなる。
なお、上バンパー５３ａの複数の凸部を凹部に変更し、かつ、筐体５２の複数の凹部を凸部に変更してもよい。 When attaching the upper bumper 53a to the housing 52, by inserting the pair of left and right attachment pieces 53aa of the upper bumper 53a into the pair of left and right attachment recesses 52cb of the housing 52, each convex of the pair of left and right attachment pieces 53aa of the upper bumper 53a is inserted. are fitted into the respective recesses of the pair of left and right mounting recesses 52cb of the housing 52. Thereby, the upper bumper 53a is attached to the housing 52 so as to be swingable about the axis P1.
Note that the plurality of convex portions of the upper bumper 53a may be changed to concave portions, and the plurality of concave portions of the housing 52 may be changed to convex portions.

図７と図１１に示すように、筐体５２の周囲部５２ｂにおける上バンパー５３ａと対向する前端面には、付勢部材５３ｃが設けられており、付勢部材５３ｃによって上バンパー５３ａは前方へ付勢されている。なお、付勢部材５３ｃとして、本実施形態では小さいブロック形の弾性発泡体を複数個用いているが、圧縮コイルバネ、捻りコイルバネ等を用いてもよい。
バンパー５３が壁面等に当接して押し込まれていない自由状態において、上バンパー５３ａは、筐体５２における最も前方に突出した前端５２ｘ（周囲部５２ｂの前端におけるバンパー５３で覆われていない左右両側部分）よりも前方へ突出している（図２、図３参照）。 As shown in FIGS. 7 and 11, a biasing member 53c is provided on the front end surface of the peripheral portion 52b of the housing 52 facing the upper bumper 53a, and the biasing member 53c causes the upper bumper 53a to move forward. energized. Although a plurality of small block-shaped elastic foam bodies are used as the biasing member 53c in this embodiment, compression coil springs, torsion coil springs, etc. may also be used.
In a free state in which the bumper 53 is not pushed into contact with a wall surface or the like, the upper bumper 53a is located at the front end 52x of the housing 52 that protrudes most forwardly (the left and right portions of the front end of the peripheral portion 52b that are not covered by the bumper 53). ) (see Figures 2 and 3).

下バンパー５３ｂは、上バンパー５３ａの下端縁に沿って設けられている。具体的には、下バンパー５３ｂの上端縁と上バンパー５３ａの下端縁に設けられた嵌合部が互いに嵌り込むことによって、下バンパー５３ｂが上バンパー５３ａに取り付けられている。あるいは、上バンパー５３ａと下バンパー５３ｂは異なる材料にて一体成形され、下バンパー５３ｂは上バンパー５３ａよりも柔軟性を有するように構成してもよい。 The lower bumper 53b is provided along the lower edge of the upper bumper 53a. Specifically, the lower bumper 53b is attached to the upper bumper 53a by fitting portions provided at the upper end edge of the lower bumper 53b and the lower end edge of the upper bumper 53a into each other. Alternatively, the upper bumper 53a and the lower bumper 53b may be integrally molded from different materials, and the lower bumper 53b may be configured to have more flexibility than the upper bumper 53a.

また、下バンパー５３ｂの下端縁５３ｂｘは、後方（回転ブラシ５６側）へ湾曲しており、バンパー５３の自由状態において、下バンパー５３ｂの下端縁５３ｂｘは回転ブラシ５６と非接触で近接している。また、下バンパー５３ｂの下端縁５３ｂｘは左右方向に直線的に延びた形状を有している。
また、清掃中にバンパー５３が室内の壁面Ｗ２（図１０参照）に当たって回転ブラシ５６側へ揺動したとき、下バンパー５３ｂの下端縁５３ｂｘは回転する回転ブラシ５６と接触する。これにより、ブラシ用モータ５６ｍ（図１１参照）の負荷が所定値以上に増加し、それによって制御部２５は電動送風機２６の出力をアップさせるが、これについて詳しくは後述する。また、下バンパー５３ｂの下端縁５３ｂｘが回転する回転ブラシ５６と接触したとき、例えば、上バンパー５３ａの左右両端が、筐体５２の左右の前端付近に設けられた突起状のストッパに当接し、それによって下バンパー５３ｂが過剰に回転ブラシ５６側へ揺動しないようになっている。
なお、図７と図１０において、回転ブラシ５６のブラシ毛先端の回転軌道を二点鎖線で示している。 Further, the lower edge 53bx of the lower bumper 53b is curved backward (toward the rotating brush 56 side), and in the free state of the bumper 53, the lower edge 53bx of the lower bumper 53b is close to the rotating brush 56 without contacting it. . Further, the lower edge 53bx of the lower bumper 53b has a shape extending linearly in the left-right direction.
Further, when the bumper 53 hits the indoor wall surface W2 (see FIG. 10) and swings toward the rotating brush 56 during cleaning, the lower edge 53bx of the lower bumper 53b comes into contact with the rotating rotating brush 56. As a result, the load on the brush motor 56m (see FIG. 11) increases to a predetermined value or more, which causes the control section 25 to increase the output of the electric blower 26, which will be described in detail later. Further, when the lower edge 53bx of the lower bumper 53b comes into contact with the rotating rotating brush 56, for example, both left and right ends of the upper bumper 53a come into contact with protruding stoppers provided near the left and right front ends of the housing 52, This prevents the lower bumper 53b from swinging excessively toward the rotating brush 56.
In addition, in FIGS. 7 and 10, the rotation trajectory of the tip of the bristles of the rotating brush 56 is shown by a two-dot chain line.

図２～図６に示すように、筐体５２の前端の左右一対の角部５２ｋ（周囲部５２ｂの前端と左右側面との間の角部５２ｋ）には、上方から視てＬ字形に折れ曲がった突起部としての凸部５２ｙがそれぞれ設けられている。
また、筐体５２の周囲部５２ｂにおける左右側面の下部には上下方向に延びる***部５２ｚがそれぞれ設けられており、これら左右一対の***部５２ｚの外面に後述する左右一対のシート状部材５７の一部が貼り付けられている。なお、図６に示すように、左右一対の***部５２ｚは、底部５２ａ側から視て、吸込口５１ａにおける下バンパー５３ｂ（自由状態）の先端よりも後方位置の左右両側に配置されている。 As shown in FIGS. 2 to 6, a pair of left and right corners 52k at the front end of the casing 52 (corners 52k between the front end of the peripheral part 52b and the left and right side surfaces) are bent into an L-shape when viewed from above. A convex portion 52y is provided as a protrusion.
Further, raised portions 52z extending in the vertical direction are provided at the lower portions of the left and right side surfaces of the peripheral portion 52b of the housing 52, and a pair of left and right sheet-like members 57, which will be described later, are formed on the outer surfaces of the pair of left and right raised portions 52z. Some are pasted. As shown in FIG. 6, the pair of left and right protrusions 52z are arranged on both left and right sides of the suction port 51a at a position rearward of the tip of the lower bumper 53b (in the free state) when viewed from the bottom 52a side.

関節部５８は、吸込口本体５１に設けられた第１筒部５８ａと、第１筒部５８ａに対して前後方向の軸心Ｐ２を中心として左右方向に回動可能に接続された第２筒部５８ｂとを有する（図２と図７参照）。なお、吸込口本体５１の吸込口５１ａと関節部５８の第１筒部５８ａとの間は通風路となっている。
また、第２筒部５８ｂは、接続管部５９の後述する上流側接続端部５９ａを左右方向の軸心Ｐ３を中心として前後方向に回動可能に受け入れる凹部５８ｂａを有している。この凹部５８ｂａは、下部と上部に設けられた大小２つの凹曲面部を有している。 The joint portion 58 includes a first cylindrical portion 58a provided in the suction port main body 51, and a second cylindrical portion rotatably connected to the first cylindrical portion 58a in the left-right direction about an axis P2 in the front-rear direction. 58b (see FIGS. 2 and 7). Note that a ventilation path is formed between the suction port 51a of the suction port main body 51 and the first cylindrical portion 58a of the joint portion 58.
The second cylindrical portion 58b has a recess 58ba that receives an upstream connecting end portion 59a of the connecting tube portion 59, which will be described later, so as to be rotatable in the front-rear direction about the left-right axis P3. This recessed portion 58ba has two large and small concave curved surface portions provided at a lower portion and an upper portion.

接続管部５９は、吸込口体５０内を空気が流れる方向（以下、「気流方向」という）の上流端側に設けられた前記上流側接続端部５９ａと、掃除機本体１０と直接または延長パイプ６０を介して着脱可能に接続される下流側接続端部５９ｂとを有している。
上流側接続端部５９ａは、関節部５８の第２筒部５８ｂにおける上部の小さい凹曲面部と摺接可能な凸曲面部５９ａａを有すると共に、第２筒部５８ｂにおける下部の大きい凹曲面部と摺接可能な摺接端部５９ａｂを有している。 The connecting pipe portion 59 connects the upstream connecting end portion 59a provided on the upstream end side in the direction in which air flows within the suction port body 50 (hereinafter referred to as the “airflow direction”), and the vacuum cleaner body 10 directly or by extension. It has a downstream connecting end 59b that is detachably connected via the pipe 60.
The upstream connecting end portion 59a has a convex curved surface portion 59aa that can slide into contact with the upper small concave curved surface portion of the second cylindrical portion 58b of the joint portion 58, and also has a convex curved surface portion 59aa that can make sliding contact with the lower large concave curved surface portion of the second cylindrical portion 58b. It has a sliding contact end portion 59ab that can be slidably contacted.

また、吸込口体５０は、吸込口本体５１内の吸込口５１ａの近傍に左右方向の軸心Ｐ４を中心として回転可能に設けられた回転ブラシ５６（図７参照）と、吸込口本体５１内に設けられたブラシ用モータ５６ｍ（図１１参照）と、吸込口本体５１内に設けられてブラシ用モータ５６ｍの回転力を回転ブラシ５６に伝達する図示しない回転力伝達機構とを備える。本実施形態では、回転ブラシ５６の一端およびブラシ用モータ５６ｍの出力軸にそれぞれプーリが設けられ、それらのプーリをタイミングベルトにて繋ぐことにより回転力伝達機構部を構成している。なお、図６では回転ブラシを図示省略している。 The suction port body 50 also includes a rotating brush 56 (see FIG. 7) that is rotatably provided near the suction port 51a in the suction port body 51 and is rotatable about an axis P4 in the left-right direction, and A brush motor 56m (see FIG. 11) provided in the suction port body 51, and a rotational force transmission mechanism (not shown) provided in the suction port body 51 to transmit the rotational force of the brush motor 56m to the rotating brush 56. In this embodiment, pulleys are provided at one end of the rotating brush 56 and at the output shaft of the brush motor 56m, and a rotational force transmission mechanism is configured by connecting these pulleys with a timing belt. Note that the rotating brush is not shown in FIG. 6.

また、吸込口体５０において、接続管部５９における下流側接続端部５９ｂの周囲には図示しないピン形の一対の受電端子が設けられると共に、一対の受電端子とブラシ用モータ５６ｍ（図１１参照）に設けられた一対の端子とは図示しないリード線にて電気的に接続されている。
また、延長パイプ６０の上流側接続端部には吸込口体５０の接続管部５９の一対の受電端子と電気的に接続可能なクリップ形の一対の給電端子が設けられ、延長パイプ６０の下流側接続端部にはピン形の一対の受電端子が設けられ、一対の給電端子と一対の受電端子とはリード線にて電気的に接続されている。 In addition, in the suction port body 50, a pair of pin-shaped power receiving terminals (not shown) are provided around the downstream connecting end 59b of the connecting pipe portion 59, and a pair of power receiving terminals and a brush motor 56m (see FIG. 11) are provided. ) is electrically connected to a pair of terminals provided at the terminals by lead wires (not shown).
Further, a pair of clip-shaped power supply terminals that can be electrically connected to a pair of power reception terminals of the connection pipe section 59 of the suction port body 50 are provided at the upstream connection end of the extension pipe 60 , and A pair of pin-shaped power receiving terminals is provided at the side connection end, and the pair of power feeding terminals and the pair of power receiving terminals are electrically connected by a lead wire.

また、掃除機本体１０の延長パイプ６０との接続部には延長パイプ６０の一対の受電端子または吸込口体５０の接続管部５９の一対の受電端子と電気的に接続可能なクリップ形の一対の給電端子が設けられており、これら一対の給電端子は掃除機本体１０の駆動装置２０内に設けられた制御部２５（図１、図１１参照）にリード線にて電気的に接続されている。 Further, at the connection part of the vacuum cleaner main body 10 with the extension pipe 60, a pair of clip-shaped terminals that can be electrically connected to a pair of power receiving terminals of the extension pipe 60 or a pair of power receiving terminals of the connecting pipe part 59 of the suction port body 50 are provided. A pair of power supply terminals are provided, and these pair of power supply terminals are electrically connected to a control unit 25 (see FIGS. 1 and 11) provided in the drive device 20 of the vacuum cleaner main body 10 by a lead wire. There is.

このように構成された電気掃除機１によれば、図１に示す掃除機本体１０の操作スイッチ２１をＯＮすることにより、駆動装置２０内の電動送風機２６（図１１参照）が駆動して吸込口体５０の吸込口５１ａ内に床面上の塵埃を含む空気が吸引されると共に、吸込口体５０内のブラシ用モータ５６ｍ（図１１参照）が駆動して回転ブラシ５６が回転して床面上が清掃される。 According to the vacuum cleaner 1 configured in this way, by turning on the operation switch 21 of the vacuum cleaner body 10 shown in FIG. 1, the electric blower 26 (see FIG. 11) in the drive device 20 is driven to suck Air containing dust on the floor is sucked into the suction port 51a of the mouth body 50, and the brush motor 56m (see FIG. 11) inside the suction mouth body 50 is driven to rotate the rotary brush 56 to clean the floor. The surface is cleaned.

＜バンパーと回転ブラシの関係について＞
図１１に示すように、回転ブラシ５６は、軸部５６ａと、軸部５６ａの外周部に設けられたブラシ毛５６ｂとを有する。ブラシ毛５６ｂは、繊維群からなり、繊維群は帯状の基材に植毛されている。なお、ブラシ毛５６の間に可撓性を有するブレードが設けられていてもよい。
本実施形態では、軸部５６ａの外周部に４列のブラシ毛５６ｂが等間隔で螺旋状に取り付けられている。また、本実施形態では、ブラシ毛５６ｂ（繊維群）の硬さが、後述の第２実施形態のブラシ毛の硬さと第３実施形態のブラシ毛の硬さの間の標準的な硬さの場合を例示している。ここで、ブラシ毛の硬さとは、繊維の腰の強さ（繊維の曲がりにくさ）を意味する。
なお、ブラシ毛５６ｂは、軸部５６ａの軸心Ｐ４と平行に設けられてもよく、軸部５６ａの外周部に全面的に設けられてもよい。 <About the relationship between the bumper and the rotating brush>
As shown in FIG. 11, the rotating brush 56 has a shaft portion 56a and brush bristles 56b provided on the outer circumference of the shaft portion 56a. The brush bristles 56b are made of a group of fibers, and the group of fibers is flocked onto a band-shaped base material. Note that a flexible blade may be provided between the brush bristles 56.
In this embodiment, four rows of brush bristles 56b are spirally attached to the outer circumference of the shaft portion 56a at equal intervals. Further, in this embodiment, the hardness of the brush bristles 56b (fiber group) is a standard hardness between the hardness of the brush bristles of the second embodiment and the hardness of the brush bristles of the third embodiment, which will be described later. An example of a case is shown below. Here, the hardness of the brush bristles means the stiffness of the fibers (difficulty in bending the fibers).
Note that the brush bristles 56b may be provided parallel to the axis P4 of the shaft portion 56a, or may be provided entirely on the outer circumferential portion of the shaft portion 56a.

本発明において、ブラシ毛５６ｂの硬さと、回転ブラシ５６の回転方向（図１１中の矢印Ａ方向）に対する下バンパー５３ｂの下端縁５３ｂｘの向きとは、下バンパー５３ｂの下端縁５３ｂｘが回転する回転ブラシ５６のブラシ毛５６ｂと接触したときに、ブラシ用モータ５６ｍの負荷が所定値以上となるように互いに調整されている。
本実施形態の場合、下バンパー５３ｂの下端縁５３ｂｘは、下端縁５３ｂｘと近接した軸部５６ａの部分の回転方向よりもやや軸部５６ａ側に向いて湾曲している。この場合、回転するブラシ毛５６ｂの先端側が下バンパー５３ｂの下端縁５３ｂｘの内面に摺接する。 In the present invention, the hardness of the brush bristles 56b and the direction of the lower edge 53bx of the lower bumper 53b with respect to the rotation direction of the rotating brush 56 (direction of arrow A in FIG. 11) are defined as the rotation of the lower edge 53bx of the lower bumper 53b. They are mutually adjusted so that when they come into contact with the bristles 56b of the brush 56, the load on the brush motor 56m is equal to or higher than a predetermined value.
In the case of this embodiment, the lower end edge 53bx of the lower bumper 53b is curved slightly toward the shaft portion 56a side than the rotational direction of the portion of the shaft portion 56a adjacent to the lower end edge 53bx. In this case, the tip side of the rotating brush bristles 56b comes into sliding contact with the inner surface of the lower edge 53bx of the lower bumper 53b.

＜シート状部材について＞
図１２は第１実施形態の吸込口体の左側の角部を室内の床面上の隅部に押し当てた底面側から視た状態を示す説明図であり、図１３は図１２で示した吸込口体における角部付近を拡大した説明図である。
図６と図１２と図１３に示すように、シート状部材５７は、筐体５２の底部５２ａの下面における吸込口５１ａの左右端部の近傍位置にそれぞれ設けられている。
このシート状部材５７は、前後シール部に相当する前後方向に延びる前方シール部５７ａと、左右シール部に相当する前方シール部５７ａの後方に設けられた左右方向に延びる後方シール部５７ｂとを有し、前方シール部５７ａと後方シール部５７ｂとが接合したＴ字形の一部品からなる。 <About sheet-like members>
FIG. 12 is an explanatory diagram showing a state in which the left corner of the suction port body of the first embodiment is pressed against a corner on the indoor floor surface when viewed from the bottom side, and FIG. 13 is an explanatory diagram showing the state shown in FIG. It is an explanatory view which expanded the corner part vicinity of a suction port body.
As shown in FIGS. 6, 12, and 13, the sheet-like members 57 are provided at positions near the left and right ends of the suction port 51a on the lower surface of the bottom 52a of the housing 52, respectively.
This sheet-like member 57 has a front seal part 57a extending in the front-rear direction and corresponding to a front-rear seal part, and a rear seal part 57b extending in the left-right direction and provided at the rear of the front seal part 57a corresponding to left-right seal parts. However, it consists of a T-shaped piece in which a front seal part 57a and a rear seal part 57b are joined.

本実施形態の場合、シート状部材５７は、基材上に起毛が設けられた起毛布からなる。この場合、起毛は基材に対して垂直方向に植毛されてもよく、あるいは基材に対して垂直方向に植毛された起毛を斜め後方へ倒れるように癖付けして斜毛としてもよい。斜毛とすることにより、例えば、フローリング上から絨毯上へ吸込口体５０を移動させる際、絨毯による段差部分を起毛布がスムーズに乗り越えることができる。 In the case of the present embodiment, the sheet-like member 57 is made of a raised fabric having a raised surface on a base material. In this case, the raised hair may be planted in a direction perpendicular to the base material, or the raised hair grown perpendicular to the base material may be made to fall diagonally backward to form oblique hair. By forming the beveled hair, for example, when moving the suction port body 50 from a flooring to a carpet, the raised fabric can smoothly overcome a stepped portion of the carpet.

また、シート状部材５７をＴ字形とすることにより、後方シール部５７ｂにおける前方シール部５７ａから左右にそれぞれ突出した長さが同じであれば、吸込口本体５１に設ける２つのシート状部材５７を１種類のシート状部材５７で賄う（共通化する）ことができる。
なお、シート状部材５７は起毛布に限定されず、例えば、所定の厚さを有する不織布、織り布、編み布、発泡樹脂シート等の柔らかいシート素材でもよい。 Further, by making the sheet-like member 57 T-shaped, if the lengths of the rear seal portion 57b protruding from the front seal portion 57a to the left and right are the same, the two sheet-like members 57 provided on the suction port body 51 can be One type of sheet-like member 57 can be used (common).
Note that the sheet-like member 57 is not limited to a raised cloth, and may be, for example, a soft sheet material such as a non-woven fabric, a woven fabric, a knitted fabric, or a foamed resin sheet having a predetermined thickness.

前方シール部５７ａは、筐体５２における底部５２ａの下面の略平坦面から前方の傾斜面部５２ａｘに亘る範囲に、例えば、接着により取り付けられている。
後方シール部５７ｂは、筐体５２における底部５２ａの下面の略平坦面から周囲部５２ｂの前記***部５２ｚに亘る範囲に、例えば、接着により取り付けられている。より具体的には、後方シール部５７ｂにおける吸込口５１ａ側の内側端部は、前方シール部５７ａよりも吸込口５１ａに接近した位置まで延びている。また、後方シール部５７ｂにおける吸込口５１ａとは反対側の外側端部５７ｂａは、周囲部５２ｂの側部の***部５２ｚ上まで延びている。 The front seal portion 57a is attached to the housing 52 in a range extending from the substantially flat lower surface of the bottom portion 52a to the front inclined surface portion 52ax by, for example, adhesive.
The rear seal portion 57b is attached, for example, by adhesive, in a range extending from the substantially flat lower surface of the bottom portion 52a of the housing 52 to the raised portion 52z of the peripheral portion 52b. More specifically, the inner end of the rear seal portion 57b on the suction port 51a side extends to a position closer to the suction port 51a than the front seal portion 57a. Further, an outer end portion 57ba of the rear seal portion 57b on the side opposite to the suction port 51a extends above the raised portion 52z on the side of the peripheral portion 52b.

シート状部材５７の前方シール部５７ａを吸込口本体５１の底部５２ａの傾斜面部５２ａｘまで延設することにより、床面Ｆ上に吸込口体５０を下ろすときにシート状部材５７の前方シール部５７ａが床面Ｆに当接可能となる（図示省略）。これにより、床面Ｆがフローリングである場合には、吸込口体５０によるフローリングの傷付きを抑えることができる。 By extending the front seal portion 57a of the sheet-like member 57 to the inclined surface portion 52ax of the bottom portion 52a of the suction port main body 51, the front seal portion 57a of the sheet-like member 57 is secured when lowering the suction port body 50 onto the floor surface F. can come into contact with the floor F (not shown). Thereby, when the floor surface F is a flooring, damage to the flooring caused by the suction port body 50 can be suppressed.

また、図５に示すように、吸込口体５０を床面Ｆ上に載置した状態では、左右一対のシート状部材５７と後部ローラ５４との概ね３箇所で吸込口本体５１が支持される。このとき、図１３に示されたシート状部材５７におけるハッチング領域は床面に接触し、シート状部材５７におけるハッチング領域以外の領域は床面に接触していない。つまり、床面と接触したシート状部材５７の接触部分は、床面と吸込口本体５１との間に隙間が形成されないようシールしている。 Further, as shown in FIG. 5, when the suction port body 50 is placed on the floor F, the suction port body 51 is supported at approximately three locations: the pair of left and right sheet members 57 and the rear roller 54. . At this time, the hatched area of the sheet-like member 57 shown in FIG. 13 is in contact with the floor surface, and the area of the sheet-like member 57 other than the hatched area is not in contact with the floor surface. In other words, the contact portion of the sheet-like member 57 that is in contact with the floor surface is sealed so that no gap is formed between the floor surface and the suction port body 51.

＜隅部および壁際の清掃について＞
図１２に示すように、室内の互いに略直交して隣接する２つの壁面Ｗ１、Ｗ２と床面Ｆとで囲まれた隅部Ｃ（図１３においては壁面Ｗ１、Ｗ２と点線で囲まれた床面上の領域）を清掃する場合、例えば、吸込口体５０の左側面を一方（側方）の壁面Ｗ１に近接させた状態で吸込口体５０を他方（前方）の壁面Ｗ２まで前進させる。このとき、吸込口体５０の底部５２ａから周囲部５２ｂの左側面まで延設したシート状部材５７の後方シール部５７ｂの外側端部５７ｂａを側方の壁面Ｗ１に摺接させることができる。つまり、後方シール部５７ｂの外側端部５７ｂａがサイドバンパーとなって壁面Ｗ１の傷付きを抑制している。 <About cleaning corners and walls>
As shown in FIG. 12, a corner C surrounded by two adjacent walls W1, W2 and a floor F (in FIG. 13, a floor surrounded by walls W1, W2 and a dotted line) When cleaning the area on the surface, for example, the left side surface of the suction port body 50 is brought close to one (side) wall surface W1, and the suction port body 50 is advanced to the other (front) wall surface W2. At this time, the outer end portion 57ba of the rear seal portion 57b of the sheet-like member 57 extending from the bottom portion 52a of the suction port body 50 to the left side surface of the peripheral portion 52b can be brought into sliding contact with the side wall surface W1. In other words, the outer end 57ba of the rear seal portion 57b serves as a side bumper to prevent damage to the wall surface W1.

吸込口体５０のバンパー５３を前方の壁面Ｗ２に軽く当接させた状態ではバンパー５３はほとんど押し込まれないため、吸込口体５０の左右の角部５２ｋにそれぞれ設けた凸部５２ｙは前方の壁面Ｗ２に当接しない（図８参照）。
その後、図９～図１３に示すように、吸込口体５０のバンパー５３（上バンパー５３ａ）を前方の壁面Ｗ２に強く押し付けると、上バンパー５３ａおよび下バンパー５３ｂが吸込口本体５１に対して後方へ揺動する。このとき、吸込口体５０の左右の角部５２ｋにそれぞれ設けた凸部５２ｙが前方の壁面Ｗ２に当接すると共に、下バンパー５３ｂの下端縁５３ｂｘが回転する回転ブラシ５６のブラシ毛５６ｂに当接する（図１１参照）。なお、隅部Ｃ側の凸部５２ｙは、側方の壁面Ｗ１にも当接する。 When the bumper 53 of the suction port body 50 is in light contact with the front wall surface W2, the bumper 53 is hardly pushed in, so that the convex portions 52y provided at the left and right corners 52k of the suction port body 50 touch the front wall surface W2. It does not come into contact with W2 (see Figure 8).
Thereafter, as shown in FIGS. 9 to 13, when the bumper 53 (upper bumper 53a) of the suction port body 50 is strongly pressed against the front wall surface W2, the upper bumper 53a and the lower bumper 53b move backward with respect to the suction port body 51. sway to. At this time, the convex portions 52y provided at the left and right corners 52k of the suction port body 50 come into contact with the front wall surface W2, and the lower edge 53bx of the lower bumper 53b comes into contact with the bristles 56b of the rotating rotating brush 56. (See Figure 11). Note that the convex portion 52y on the corner C side also comes into contact with the side wall surface W1.

図１１に示すように、下バンパー５３ｂの下端縁５３ｂｘが回転する回転ブラシ５６のブラシ毛５６ｂに当接することにより、ブラシ用モータ５６ｍの負荷が所定値以上に増大し、ブラシ用モータ５６ｍの電流値が所定値以上に上昇する。
制御部２５は、ブラシ用モータ５６ｍの電流値を検知しており、ブラシ用モータ５６ｍの電流値が所定値以上に上昇したことを検知すると、電動送風機２６の出力（回転数）を増加させる。このときの出力増加率としては、例えば、フローリング上の清掃時の電動送風機２６の出力の１．５～２倍程度、あるいは、絨毯上の清掃時の電動送風機２６の出力と同程度とすることができる。あるいは、絨毯上の清掃時の電動送風機２６の出力よりも大きくしてもよい。このようにすることで、壁際清掃時における電気掃除機の吸引力を強めることができる。
さらに、制御部２５は、電動送風機２６の出力増加を所定時間維持するようにしてもよい。この場合の維持時間（継続時間）としては、例えば、３～１０秒程度とすることができる。この継続時間のカウント開始のタイミングとしては、ブラシ用モータ５６ｍの電流値が所定値未満に下降したことを検知したときからでもよいし、あるいはブラシ用モータ５６ｍの電流値が所定値以上に上昇したことを検知したときからでもよい。 As shown in FIG. 11, when the lower edge 53bx of the lower bumper 53b comes into contact with the bristles 56b of the rotating rotating brush 56, the load on the brush motor 56m increases to a predetermined value or more, and the current of the brush motor 56m increases. The value increases above a predetermined value.
The control unit 25 detects the current value of the brush motor 56m, and increases the output (rotation speed) of the electric blower 26 when detecting that the current value of the brush motor 56m has increased to a predetermined value or more. The output increase rate at this time should be, for example, about 1.5 to 2 times the output of the electric blower 26 when cleaning flooring, or about the same as the output of the electric blower 26 when cleaning carpets. Can be done. Alternatively, the output may be greater than the output of the electric blower 26 when cleaning a carpet. By doing so, the suction power of the vacuum cleaner can be strengthened when cleaning near walls.
Furthermore, the control unit 25 may maintain the increase in the output of the electric blower 26 for a predetermined period of time. The maintenance time (duration time) in this case can be, for example, about 3 to 10 seconds. The timing to start counting this duration may be when it is detected that the current value of the brush motor 56m has fallen below a predetermined value, or when the current value of the brush motor 56m has increased to a predetermined value or more. It may start from the time when it is detected.

２つの壁面Ｗ１、Ｗ２と床面Ｆとで囲まれた隅部Ｃに、吸込口体５０の左側の角部５２ｋを近接させた清掃状態では、凸部５２ｙが隅部Ｃの２つの壁面Ｗ１、Ｗ２に当接し、バンパー５３の上バンパー５３ａが前方の壁面Ｗ２に当接し、シート状部材５７の後方シール部５７ｂが側方の壁面Ｗ１に当接する。これにより、隅部Ｃにおける前方シール部５７ａの周囲（前方シール部５７ａの傾斜面部５２ａｘに沿った部分）に空気流路Ｇ１（図９、図１０、図１１参照）が形成され、上バンパー５３ａと凸部５２ｙとの間および凸部５２ｙと後方シール部５７ｂとの間に前記空気流路の入口となる上方に開口した空気流入口Ｇ２、Ｇ３（図１３参照）がそれぞれ形成される。このとき、前方シール部５７ａの周囲の空気流路Ｇ１は、特に隅部Ｃの奧部およびその周辺に確実に空気が流れるように形成されている。 In the cleaning state in which the left corner 52k of the suction port body 50 is brought close to the corner C surrounded by the two wall surfaces W1 and W2 and the floor F, the convex portion 52y is connected to the corner C of the two wall surfaces W1. , W2, the upper bumper 53a of the bumper 53 abuts the front wall surface W2, and the rear seal portion 57b of the sheet-like member 57 abuts the side wall surface W1. As a result, an air flow path G1 (see FIGS. 9, 10, and 11) is formed around the front seal part 57a at the corner C (the part along the inclined surface part 52ax of the front seal part 57a), and the upper bumper 53a Air inlets G2 and G3 (see FIG. 13), which are open upward and serve as inlets of the air flow path, are formed between the convex portion 52y and the convex portion 52y and the rear seal portion 57b, respectively. At this time, the air flow path G1 around the front seal portion 57a is formed so that air can flow reliably especially into the back of the corner C and its surroundings.

そのため、吸込口５１ａ内へ塵埃を含む空気が吸引されると、図９と図１３中の矢印Ｑ（空気の流れ）で示すように、前方の壁面Ｗ２側の空気流入口Ｇ２と側方の壁面Ｗ１側の空気流入口Ｇ３の上方から空気が前方シール部５７ａの周囲の空気流路Ｇ１内に流入する。つまり、空気が隅部Ｃに流入する。これにより、隅部Ｃに存在する塵埃が床面Ｆから浮き上がって空気と共に吸込口５１ａへ流れ込み、隅部Ｃがきれいに除塵される。このとき、前記のように電動送風機２６の出力が増加しているため吸引力が強まり、溜まりやすくかつ除去しにくい隅部Ｃの塵埃が、強い吸引力と隅部Ｃへの空気の導入との相乗効果によって効率的に除去される。
また、壁面Ｗとバンパー５３（上バンパー５３ａ）との間の僅かな隙間に上方から空気が流入して壁面Ｗ２近傍の下バンパー５３ｂ側へ向かうため、壁面Ｗ２の際に存在する塵埃が床面Ｆから浮き上がって空気と共に吸込口５１ａへ流れ込み、壁面Ｗ２の際がきれいに除塵される。 Therefore, when air containing dust is sucked into the suction port 51a, as shown by the arrow Q (air flow) in FIGS. 9 and 13, the air inlet G2 on the front wall W2 side and the side Air flows into the air flow path G1 around the front seal portion 57a from above the air inlet G3 on the wall surface W1 side. In other words, air flows into the corner C. Thereby, the dust existing in the corner C rises from the floor surface F and flows into the suction port 51a together with the air, so that the corner C is cleanly dusted. At this time, as the output of the electric blower 26 is increased as described above, the suction force is strengthened, and the dust in the corner C that is easy to accumulate and difficult to remove is removed due to the strong suction force and the introduction of air into the corner C. Efficient removal due to synergistic effects.
In addition, since air flows from above into the small gap between the wall surface W and the bumper 53 (upper bumper 53a) and heads toward the lower bumper 53b near the wall surface W2, the dust present on the wall surface W2 is removed from the floor surface. It floats up from F and flows into the suction port 51a along with the air, and the edge of the wall surface W2 is cleanly cleaned of dust.

また、隅部Ｃの清掃の際、図１３中の矢印Ｒ（空気の流れ）で示すように、シート状部材５７の後方シール部５７ｂの後方における床面と底部５２ａとの間の隙間を空気が通って吸込口５１ａへ流れ込むため、側方の壁面Ｗ１付近の塵埃も除塵される。
なお、隅部Ｃへ向かって吸込口体５０を側方の壁面Ｗ１に沿って移動させているときも、凸部５２ｙと後方シール部５７ｂとの間の空気流入口Ｇ３の上方から前方シール部５７ａの周囲の空気流路Ｇ１を通って吸込口５１ａへ空気が流れているため、側方の壁面Ｗ１付近の塵埃も除塵されている。 In addition, when cleaning the corner C, as shown by the arrow R (air flow) in FIG. , and flows into the suction port 51a, so that the dust near the side wall surface W1 is also removed.
Note that even when the suction port body 50 is moved along the side wall surface W1 toward the corner C, from above the air inlet G3 between the convex portion 52y and the rear seal portion 57b, the front seal portion Since air is flowing to the suction port 51a through the air flow path G1 around the air passage 57a, dust near the side wall surface W1 is also removed.

また、図１１～図１３に示すように、電動送風機２６の出力増加が所定時間維持されることにより、隅部Ｃを清掃した後、吸込口体５０を前方の壁面Ｗ２から一旦離し、壁面Ｗ２の掃除した領域の左側に隣接する領域へ吸込口体５０を移動させる間も強い吸引力を維持することができる。そのため、バンパー５３を壁面Ｗ２に継続的に押し付けなくとも強い吸引力を維持しながら吸込口体５０を壁面Ｗ２に沿って左方向に移動させて壁際の広い範囲を清掃することができる。また、吸込口体５０が壁面Ｗ２から離れて直ぐに電動送風機２６の出力が低下して駆動音が小さくなると、壁際清掃時における吸引力の強弱が目立ってしまうが、本発明によれば壁際を強い吸引力を維持したまま清掃していることをユーザーが認識することができる。つまり、ユーザーは電動送風機２６の出力（駆動音）の強弱を気にすることなく壁際を清掃することができる。
なお、吸込口体５０を前方の壁面Ｗ２から一旦離し、壁面Ｗ２の掃除した領域の左側に隣接する領域へ吸込口体５０を移動させる間も強い吸引力を維持している途中で、バンパー５３が壁面Ｗ２に押し付けられて、ブラシ用モータ５６ｍの電流値が所定値以上に上昇したことを検知した場合、所定時間（吸引力増加の継続時間）のカウントはリセットされる。このようにすることで、吸込口体５０を移動させながら、強い吸引力を維持でき、吸込口体５０を壁面Ｗ２に沿って左方向に移動させて壁際の広い範囲を清掃することができる。 Further, as shown in FIGS. 11 to 13, after cleaning the corner C by maintaining the increase in the output of the electric blower 26 for a predetermined time, the suction port body 50 is temporarily separated from the front wall surface W2, and the A strong suction force can be maintained even while the suction port body 50 is moved to the area adjacent to the left side of the cleaned area. Therefore, the suction port body 50 can be moved leftward along the wall surface W2 to clean a wide area near the wall while maintaining a strong suction force without continuously pressing the bumper 53 against the wall surface W2. Further, if the output of the electric blower 26 decreases and the driving noise becomes small immediately after the suction port body 50 separates from the wall surface W2, the strength of the suction force during wall cleaning becomes noticeable, but according to the present invention, the strength of the suction force is The user can recognize that cleaning is being performed while maintaining suction power. In other words, the user can clean the area near the wall without worrying about the strength of the output (driving sound) of the electric blower 26.
Note that while the suction port body 50 is temporarily separated from the front wall surface W2 and the suction port body 50 is moved to an area adjacent to the left side of the cleaned area of the wall surface W2 while maintaining strong suction force, the bumper 53 When it is detected that the brush motor 56m is pressed against the wall surface W2 and the current value of the brush motor 56m has increased to a predetermined value or more, the count of the predetermined time (the duration of the increase in suction force) is reset. By doing so, a strong suction force can be maintained while moving the suction port body 50, and a wide area near the wall can be cleaned by moving the suction port body 50 to the left along the wall surface W2.

（第２実施形態）
図１４は第２実施形態の吸込口体におけるバンパー形状とブラシ毛の硬さとの関係を説明する図である。なお、図１４において、図１１中の要素と同様の要素には同一の符号を付している。
第２実施形態の電気掃除機は、回転ブラシ１５６のブラシ毛１５６ｂの硬さ、および、バンパー１５３の下バンパー１５３ｂの下端縁１５３ｂｘの形状が第１実施形態とは異なる以外は、第１実施形態と概ね同様に構成されている。以下、第２実施形態における第１実施形態とは異なる点を主に説明する。 (Second embodiment)
FIG. 14 is a diagram illustrating the relationship between the bumper shape and the hardness of the brush bristles in the suction port body of the second embodiment. Note that in FIG. 14, elements similar to those in FIG. 11 are given the same reference numerals.
The vacuum cleaner of the second embodiment is different from the first embodiment except that the hardness of the bristles 156b of the rotating brush 156 and the shape of the lower edge 153bx of the lower bumper 153b of the bumper 153 are different from the first embodiment. It is structured in roughly the same way. Hereinafter, differences between the second embodiment and the first embodiment will be mainly described.

図１４に示す第２実施形態において、回転ブラシ５６のブラシ毛１５６ｂは、第１実施形態におけるブラシ毛５６ｂ（図１１参照）よりも柔らかいものが使用されている。
また、第２実施形態において、下バンパー１５３ｂの下端縁１５３ｂｘは、第１実施形態における下バンパー５３ｂの下端縁５３ｂｘよりも上方へ湾曲している。換言すると、下バンパー１５３ｂの下端縁１５３ｂｘは、下端縁１５３ｂｘと近接した軸部５６ａの部分の回転方向（矢印Ａ方向）とは逆方向に向いて湾曲している。
この場合、回転するブラシ毛１５６ｂの先端側が下バンパー１５３ｂの下端縁１５３ｂｘの頂部に衝突するように摺接することによって、下バンパー１５３ｂの下端縁１５３ｂｘが回転する柔らかいブラシ毛１５６ｂに接触したときのブラシ用モータ５６ｍ（図１１参照）の負荷が第１実施形態と同様の所定値以上に増大するように調整している。 In the second embodiment shown in FIG. 14, the bristles 156b of the rotating brush 56 are softer than the bristles 56b in the first embodiment (see FIG. 11).
Further, in the second embodiment, the lower edge 153bx of the lower bumper 153b is curved upward more than the lower edge 53bx of the lower bumper 53b in the first embodiment. In other words, the lower edge 153bx of the lower bumper 153b is curved in a direction opposite to the rotational direction (arrow A direction) of the portion of the shaft portion 56a adjacent to the lower edge 153bx.
In this case, the tip side of the rotating brush bristles 156b collides with the top of the lower edge 153bx of the lower bumper 153b, so that the brush when the lower edge 153bx of the lower bumper 153b contacts the rotating soft brush bristles 156b. The load on the motor 56m (see FIG. 11) is adjusted so as to increase above a predetermined value similar to the first embodiment.

（第３実施形態）
図１５は第３実施形態の吸込口体におけるバンパー形状とブラシ毛の硬さとの関係を説明する図である。なお、図１５において、図１１中の要素と同様の要素には同一の符号を付している。
第３実施形態の電気掃除機は、回転ブラシ２５６のブラシ毛２５６ｂの硬さ、および、バンパー２５３の下バンパー２５３ｂの下端縁２５３ｂｘの形状が第１実施形態とは異なる以外は、第１実施形態と概ね同様に構成されている。以下、第３実施形態における第１実施形態とは異なる点を主に説明する。 (Third embodiment)
FIG. 15 is a diagram illustrating the relationship between the bumper shape and the hardness of the brush bristles in the suction port body of the third embodiment. Note that in FIG. 15, elements similar to those in FIG. 11 are given the same reference numerals.
The vacuum cleaner of the third embodiment is different from the first embodiment except that the hardness of the bristles 256b of the rotating brush 256 and the shape of the lower edge 253bx of the lower bumper 253b of the bumper 253 are different from the first embodiment. It is structured in roughly the same way. Hereinafter, the differences between the third embodiment and the first embodiment will be mainly explained.

図１５に示す第３実施形態において、回転ブラシ２５６のブラシ毛２５６ｂは、第１実施形態におけるブラシ毛５６ｂ（図１１参照）よりも硬いものが使用されている。
また、第３実施形態において、下バンパー２５３ｂの下端縁２５３ｂｘは、第１実施形態における下バンパー５３ｂの下端縁５３ｂｘよりも下方へ湾曲している。換言すると、下バンパー２５３ｂの下端縁２５３ｂｘは、下端縁２５３ｂｘと近接した軸部５６ａの部分の回転方向（矢印Ａ方向）と概ね順方向に向いて湾曲している。
この場合、回転するブラシ毛２５６ｂの先端側が下バンパー２５３ｂの下端縁２５３ｂｘの内面を撫でるように摺接することによって、下バンパー２５３ｂの下端縁２５３ｂｘが回転する硬いブラシ毛２５６ｂに接触したときのブラシ用モータ５６ｍ（図１１参照）の負荷が第１実施形態と同様の所定値以上に増大するように調整している。 In the third embodiment shown in FIG. 15, the bristles 256b of the rotating brush 256 are harder than the bristles 56b in the first embodiment (see FIG. 11).
Furthermore, in the third embodiment, the lower edge 253bx of the lower bumper 253b is curved more downward than the lower edge 53bx of the lower bumper 53b in the first embodiment. In other words, the lower edge 253bx of the lower bumper 253b is curved in a direction generally forward of the rotational direction (arrow A direction) of the portion of the shaft portion 56a adjacent to the lower edge 253bx.
In this case, the tip side of the rotating brush bristles 256b comes into sliding contact with the inner surface of the lower edge 253bx of the lower bumper 253b, so that the lower edge 253bx of the lower bumper 253b contacts the rotating hard brush bristles 256b. Adjustment is made so that the load on the motor 56m (see FIG. 11) increases above a predetermined value similar to the first embodiment.

（第４実施形態）
第１～第３実施形態で説明した下バンパーの下端縁は左右方向に直線的に延びた形状を有するものであったが、下バンパーの下端縁は凹凸形に形成されてもよい。この場合の凹凸形とは、例えば、櫛歯形、鋸波形を含む三角波形、矩形波形、正弦波形、これらの組み合わせ等が含まれる。
この構成によれば、下バンパーの下端縁と回転する回転ブラシのブラシ毛との接触領域が増加し、下バンパーの凹凸形の下端縁に回転する回転ブラシのブラシ毛が擦れることによって塵埃がブラシ毛から離れて吸込口へ吸引されやすくなる。 (Fourth embodiment)
Although the lower end edge of the lower bumper described in the first to third embodiments had a shape extending linearly in the left-right direction, the lower end edge of the lower bumper may be formed in an uneven shape. In this case, the uneven shape includes, for example, a comb tooth shape, a triangular waveform including a sawtooth waveform, a rectangular waveform, a sine waveform, a combination thereof, and the like.
According to this configuration, the contact area between the lower edge of the lower bumper and the bristles of the rotating rotating brush is increased, and the bristles of the rotating rotating brush rub against the uneven lower edge of the lower bumper, thereby removing dust from the brush. It separates from the hair and is easily sucked into the suction port.

（他の実施形態）
１．第１～第３実施形態では、回転ブラシのブラシ毛の硬さと下バンパーの下端縁の向きとによって、下バンパーの下端縁が回転するブラシ毛に接触したときのブラシ用モータの負荷が所定値以上に増大するように調整する場合を例示したが、本発明はこれに限定されるものではない。例えば、回転ブラシのブラシ毛の硬さが柔らかい場合は、下バンパーの下端縁とブラシ毛との接触面積が大きくなるような形状に下端縁を形成し、ブラシ毛の硬さが硬くなるにつれて下バンパーの下端縁とブラシ毛との接触面積が小さくなるような形状に下端縁を形成してもよい。 (Other embodiments)
1. In the first to third embodiments, depending on the hardness of the bristles of the rotating brush and the orientation of the lower edge of the lower bumper, the load on the brush motor when the lower edge of the lower bumper comes into contact with the rotating brush bristles is a predetermined value. Although the case where adjustment is made to increase the amount above is illustrated, the present invention is not limited to this. For example, if the bristles of a rotating brush have soft bristles, the bottom edge of the lower bumper should be formed in a shape that increases the contact area between the bristles and the bottom edge of the lower bumper. The lower edge of the bumper may be formed in a shape that reduces the contact area between the lower edge of the bumper and the brush bristles.

２．第１～第３実施形態では、回転ブラシの複数列のブラシ毛が互いに同じ硬さである場合を例示したが、複数列のブラシ毛は互いに異なる硬さを有するものであってもよい。あるいは、複数列のブラシ毛において、回転ブラシの軸心方向の両端部と中央部とを異なる硬さにしてもよい。これらの場合も、回転する複数列のブラシ毛に下バンパーの下端縁が接触したときのブラシ用モータの負荷が所定値以上となるような形状に、下バンパーの下端縁を形成すればよい。 2. In the first to third embodiments, the case where the bristles in multiple rows of the rotating brush have the same hardness is illustrated, but the bristles in the multiple rows may have different hardnesses. Alternatively, in a plurality of rows of bristles, both ends and the center portion in the axial direction of the rotating brush may have different hardness. In these cases as well, the lower edge of the lower bumper may be formed in such a shape that the load on the brush motor is equal to or greater than a predetermined value when the lower edge of the lower bumper comes into contact with the rotating plural rows of brush bristles.

３．下バンパーが回転する回転ブラシから離れてブラシ用モータの負荷または電流値が所定値未満に下がれば、制御部は電動送風機の出力を直ちに元に戻すように制御してもよい。この構成によれば、バッテリーの消費電力を抑えることができる。
４．駆動装置２０の通風経路における集塵装置３０よりも気流方向の上流側に、吸引力調整用の開口が設けられると共に、吸引力調整用の開口を電気的および機械的に開閉する弁機構が設けられてもよい。この弁機構は、制御部２５によって開閉動作が制御されるものであり、吸引力調整用の開口が開いた状態のときは駆動装置２０の吸引力により外部から通風経路内に空気が流入するようになっている。制御部２５は、ブラシ用モータ５６ｍの電流値が所定値未満である場合は、吸引力調整用の開口を開いており、ブラシ用モータ５６ｍの電流値が所定値以上に上昇したことを検知すると吸引力調整用の開口を閉め、吸込口５１ａの吸引力を大きくする。また、吸引力調整用の開口は、空気中に舞い上がった塵埃を駆動装置２０内に吸引するための塵埃吸引口としても機能させることができる。 3. If the lower bumper moves away from the rotating brush and the load or current value of the brush motor falls below a predetermined value, the control unit may control the output of the electric blower to immediately return to its original state. According to this configuration, power consumption of the battery can be suppressed.
4. An opening for adjusting suction force is provided on the upstream side of the dust collector 30 in the air flow direction in the ventilation path of the drive device 20, and a valve mechanism is provided for electrically and mechanically opening and closing the opening for adjusting the suction force. It's okay to be hit. The opening/closing operation of this valve mechanism is controlled by the control unit 25, and when the opening for adjusting the suction force is open, the suction force of the drive device 20 causes air to flow into the ventilation path from the outside. It has become. When the current value of the brush motor 56m is less than a predetermined value, the control unit 25 opens the opening for adjusting the suction force, and when it detects that the current value of the brush motor 56m has increased to a predetermined value or more. The suction force adjustment opening is closed and the suction force of the suction port 51a is increased. Further, the opening for adjusting the suction force can also function as a dust suction port for sucking dust that is kicked up in the air into the drive device 20.

（まとめ）
本発明（第１の発明）の電気掃除機は、電動送風機および集塵部が設けられた掃除機本体と、前記掃除機本体に直接または延長管を介して接続される吸込口体とを備え、
前記吸込口体は、吸込口が設けられた底部を有する筐体と、前記筐体内の前記吸込口の近傍に設けられた回転ブラシと、前記筐体内に設けられて前記回転ブラシを回転させるブラシ用モータと、前記筐体が前進する方向の前端に左右方向の軸心を中心として揺動可能に設けられたバンパーとを有し、
前記掃除機本体は、前記電動送風機および前記ブラシ用モータを制御可能、かつ、前記ブラシ用モータの負荷を検知可能な制御部を有し、
前記バンパーが障害物に当接することによって後方へ揺動して回転する前記回転ブラシに接触し、それによって前記ブラシ用モータの負荷が所定値以上に増加したときに、前記制御部が前記電動送風機の出力を増加させるように構成されたものである。
この構成によれば、塵埃が溜まりやすくかつ塵埃を吸引除去しにくい壁際の清掃の際、吸込口体のバンパーを壁に押し当てることによって電動送風機の出力を増加させ、通常よりも強い吸引力で壁際の塵埃を吸引除去することができる。
また、この構成によれば、吸込口体が壁に近接したことを検知する専用のセンサが不要であるため、コストアップすることなく吸引力の制御を行うことができると共に、バンパーの周辺構造を複雑化させることもない。
また、この場合、前記制御部は、前記電動送風機の出力増加を所定時間維持するように構成されてもよい。
この構成によれば、吸込口体のバンパーを壁に押し付けて電動送風機の出力を増加させた後、一旦壁から離れて壁の隣の領域に吸込口体を移動させる際、移動中も電動送風機の出力増加を維持することができる。これにより、バンパーを壁に継続的に押し付けなくとも強い吸引力を維持しながら吸込口体を壁際に沿って左右方向に移動させて壁際の広い範囲を清掃することができる。また、吸込口体が壁から離れて直ぐに電動送風機の出力が低下して駆動音が小さくなると、壁際清掃時における吸引力の強弱が目立ってしまうが、前記構成によれば壁際を強い吸引力を維持したまま清掃していることをユーザーが認識することができる。 (summary)
A vacuum cleaner according to the present invention (first invention) includes a vacuum cleaner main body provided with an electric blower and a dust collection section, and a suction port body connected to the vacuum cleaner main body directly or via an extension pipe. ,
The suction port body includes a casing having a bottom portion provided with a suction port, a rotating brush provided in the vicinity of the suction port within the casing, and a brush provided within the casing that rotates the rotating brush. and a bumper that is swingably provided at the front end in the direction in which the housing moves forward, about an axis in the left and right direction,
The vacuum cleaner main body has a control unit that can control the electric blower and the brush motor and can detect the load on the brush motor,
When the bumper comes into contact with the rotating brush that swings backward due to contact with an obstacle, and the load on the brush motor increases to a predetermined value or more, the control unit controls the electric blower. is configured to increase the output of the
According to this configuration, when cleaning near walls where dust tends to accumulate and where it is difficult to remove dust by suction, the output of the electric blower is increased by pressing the bumper of the suction port against the wall, resulting in a stronger suction force than usual. Dust near the wall can be removed by suction.
In addition, according to this configuration, there is no need for a dedicated sensor to detect when the suction port is close to the wall, so the suction force can be controlled without increasing costs, and the surrounding structure of the bumper can be reduced. It doesn't make it complicated.
Further, in this case, the control unit may be configured to maintain an increase in the output of the electric blower for a predetermined period of time.
According to this configuration, when the bumper of the suction port body is pressed against the wall to increase the output of the electric blower, and then the suction port body is moved away from the wall and to an area next to the wall, the electric blower continues to operate even during the movement. can maintain an increase in output. This makes it possible to clean a wide area near the wall by moving the suction port in the left-right direction along the wall while maintaining a strong suction force without continuously pressing the bumper against the wall. Furthermore, when the suction port body separates from the wall, the output of the electric blower decreases and the driving sound becomes small, making the strength and weakness of the suction force noticeable when cleaning the wall. The user can recognize that the cleaning is being performed while maintaining the cleaning status.

また、本発明（第２の発明）の電気掃除機は、電動送風機および集塵部が設けられた掃除機本体と、前記掃除機本体に直接または延長管を介して接続される吸込口体とを備え、
前記吸込口体は、吸込口が設けられた底部を有する筐体と、前記筐体内の前記吸込口の近傍に設けられた回転ブラシと、前記筐体内に設けられて前記回転ブラシを回転させるブラシ用モータと、前記筐体が前進する方向の前端に左右方向の軸心を中心として揺動可能に設けられたバンパーとを有し、
前記掃除機本体は、前記電動送風機および前記ブラシ用モータを制御可能、かつ、前記ブラシ用モータの負荷を検知可能な制御部を有し、
前記バンパーが障害物に当接することによって後方へ揺動して回転する前記回転ブラシに接触し、それによって前記ブラシ用モータの負荷が所定値以上に増加したときに、前記制御部が吸引力を増加させるように構成された電気掃除機である。
この構成によれば、塵埃が溜まりやすくかつ塵埃を吸引除去しにくい壁際の清掃の際、吸込口体のバンパーを壁に押し当てることによって吸引力を増加させ、通常よりも強い吸引力で壁際の塵埃を吸引除去することができる。
また、この構成によれば、吸込口体が壁に近接したことを検知する専用のセンサが不要であるため、バンパーの周辺構造を複雑化させることもない。
また、この場合、前記制御部は、前記電動送風機の吸引力増加を所定時間維持するように構成されてもよい。
この構成によれば、吸込口体のバンパーを壁に押し付けて吸引力を増加させた後、一旦壁から離れて壁の隣の領域に吸込口体を移動させる際、移動中も吸引力増加を維持することができる。これにより、バンパーを壁に継続的に押し付けなくとも強い吸引力を維持しながら吸込口体を壁際に沿って左右方向に移動させて壁際の広い範囲を清掃することができる。また、吸込口体が壁から離れて直ぐに吸引力が低下して吸引音が小さくなると、壁際清掃時における吸引力の強弱が目立ってしまうが、前記構成によれば壁際を強い吸引力を維持したまま清掃していることをユーザーが認識することができる。 Further, the vacuum cleaner of the present invention (second invention) includes a vacuum cleaner main body provided with an electric blower and a dust collecting section, and a suction port body connected to the vacuum cleaner main body directly or via an extension pipe. Equipped with
The suction port body includes a casing having a bottom portion provided with a suction port, a rotating brush provided in the vicinity of the suction port within the casing, and a brush provided within the casing that rotates the rotating brush. and a bumper that is swingably provided at the front end in the direction in which the housing moves forward, about an axis in the left and right direction,
The vacuum cleaner main body has a control unit that can control the electric blower and the brush motor and can detect the load on the brush motor,
When the bumper comes into contact with the rotating brush that swings backward due to contact with an obstacle, and thereby the load on the brush motor increases to a predetermined value or more, the control section applies a suction force. A vacuum cleaner configured to increase
According to this configuration, when cleaning near a wall where dust tends to accumulate and it is difficult to remove dust by suction, the suction force is increased by pressing the bumper of the suction port body against the wall, and the suction force is increased when cleaning near the wall with a stronger suction force than usual. Dust can be removed by suction.
Further, according to this configuration, there is no need for a dedicated sensor for detecting the proximity of the suction port to the wall, so the structure around the bumper does not become complicated.
Further, in this case, the control unit may be configured to maintain the increase in the suction force of the electric blower for a predetermined period of time.
According to this configuration, when the bumper of the suction port is pressed against the wall to increase the suction force, and then the suction port is moved away from the wall to an area next to the wall, the suction force is increased even during the movement. can be maintained. This makes it possible to clean a wide area near the wall by moving the suction port in the left-right direction along the wall while maintaining a strong suction force without continuously pressing the bumper against the wall. In addition, if the suction force decreases and the suction sound becomes small as soon as the suction port separates from the wall, the strength and weakness of the suction force will be noticeable when cleaning the wall, but with the above configuration, the strong suction force can be maintained near the wall. The user can recognize that the device is being cleaned.

本発明の電気掃除機は、次のように構成されてもよく、それらが適宜組み合わされてもよい。 The vacuum cleaner of the present invention may be configured as follows, and these may be combined as appropriate.

・前記回転ブラシは、軸部と、前記軸部の外周部に設けられたブラシ毛とを有し、
前記バンパーは、前記ブラシ毛と接触可能な下端縁を有し、
前記ブラシ毛の硬さと、前記バンパーの前記下端縁の形状とは、前記負荷が前記所定値以上となるように互いに調整されてもよい。
例えば、硬いブラシ毛の場合、回転ブラシの回転方向に対してバンパーの下端縁を順方向に向け、ブラシ毛の硬さが徐々に柔らかくなるにつれてバンパーの下端縁を徐々に回転ブラシの回転方向とは逆方向に向けるようにする。これにより、ブラシ毛の硬さの違いによるブラシ用モータの負荷の極端なばらつきを抑え、どのような硬さのブラシ毛でもブラシ用モータの負荷が所定値以上となるようにすることが容易となる。 - The rotating brush has a shaft portion and brush bristles provided on the outer circumference of the shaft portion,
The bumper has a lower edge that can come into contact with the brush bristles,
The hardness of the brush bristles and the shape of the lower edge of the bumper may be mutually adjusted so that the load is equal to or greater than the predetermined value.
For example, in the case of hard bristles, the lower edge of the bumper should be oriented in the forward direction relative to the rotating direction of the rotating brush, and as the hardness of the bristles gradually becomes softer, the lower edge of the bumper should be gradually aligned with the rotating direction of the rotating brush. should face in the opposite direction. This suppresses extreme variations in the load on the brush motor due to differences in the hardness of the brush bristles, and makes it easy to ensure that the load on the brush motor exceeds a predetermined value regardless of the hardness of the bristles. Become.

・前記バンパーは、前記回転ブラシと接触可能な凹凸形の下端縁を有するものであってもよい。
この構成によれば、回転ブラシに付着した塵埃をバンパーの凹凸形の下端縁に擦り付けて除去しやすくなる。 - The bumper may have an uneven lower end edge that can come into contact with the rotating brush.
According to this configuration, dust attached to the rotating brush can be easily removed by rubbing against the uneven lower edge of the bumper.

・前記吸込口が、前記筐体の前記前端まで延びてもよい。
この構成によれば、吸込口が筐体の前端まで広がるため、比較的大きなゴミ（例えば、ピーナツ程度の大きさのゴミ）を容易に吸引除去することができる。 - The suction port may extend to the front end of the housing.
According to this configuration, since the suction port extends to the front end of the housing, relatively large dust (for example, dust about the size of a peanut) can be easily removed by suction.

なお、開示された実施の形態は、全ての点で例示であって制限的なものではないと考えられるべきである。本発明の範囲は上述の説明ではなくて特許請求の範囲によって示され、特許請求の範囲と均等の意味及び範囲内での全ての変更が含まれることが意図される。 Note that the disclosed embodiments should be considered to be illustrative in all respects and not restrictive. The scope of the present invention is indicated by the claims rather than the above description, and it is intended that all changes within the meaning and range equivalent to the claims are included.

１ 電気掃除機
１０ 掃除機本体
２０ 駆動装置
２５ 制御部
２６ 電動送風機
３０ 集塵装置（集塵部）
５０ 吸込口体
５１ａ 吸込口
５２ 筐体
５２ａ 底部
５２ｘ 前端
５３ バンパー
５３ｂｘ 下端縁
５６ 回転ブラシ
５６ａ 軸部
５６ｂ ブラシ毛
５６ｍ ブラシ用モータ
６０ 延長管
Ｐ１ 軸心
Ｗ２ 壁面（障害物）
1 Vacuum cleaner 10 Vacuum cleaner body 20 Drive device 25 Control unit 26 Electric blower 30 Dust collector (dust collector)
50 Suction port body 51a Suction port 52 Housing 52a Bottom 52x Front end 53 Bumper 53bx Lower edge 56 Rotating brush 56a Shaft 56b Brush bristles 56m Brush motor 60 Extension pipe P1 Axial center W2 Wall surface (obstacle)

Claims (7)

電動送風機および集塵部が設けられた掃除機本体と、前記掃除機本体に直接または延長管を介して接続される吸込口体とを備え、
前記吸込口体は、吸込口が設けられた底部を有する筐体と、前記筐体内の前記吸込口の近傍に設けられた回転ブラシと、前記筐体内に設けられて前記回転ブラシを回転させるブラシ用モータと、前記筐体が前進する方向の前端に左右方向の軸心を中心として揺動可能に設けられたバンパーとを有し、
前記バンパーは、前記バンパーの上端縁と下端縁との間に屈曲部を有し、前記屈曲部が前進する方向に最も突出しており、
前記筐体の前端と、前記筐体に取り付けられた前記バンパーの前記屈曲部との間に、前記屈曲部を前方に付勢する付勢部材が設けられ、前記バンパーの下端縁が前記屈曲部よりも下方の高さ位置に配置されており、
前記掃除機本体は、前記電動送風機および前記ブラシ用モータを制御可能、かつ、前記ブラシ用モータの負荷を検知可能な制御部を有し、
前記バンパーの屈曲部が障害物に当接することによって、付勢部材の付勢力に抗して前記バンパーの下端縁が後方へ揺動して前記回転ブラシの軸部よりも下方において回転する前記回転ブラシに接触し、それによって前記ブラシ用モータの負荷が所定値以上に増加したときに、前記制御部が前記電動送風機の出力を増加させるように構成されたことを特徴とする電気掃除機。 A vacuum cleaner main body provided with an electric blower and a dust collection part, and a suction port body connected to the vacuum cleaner main body directly or via an extension pipe,
The suction port body includes a casing having a bottom portion provided with a suction port, a rotating brush provided in the vicinity of the suction port within the casing, and a brush provided within the casing that rotates the rotating brush. and a bumper that is swingably provided at the front end in the direction in which the housing moves forward, about an axis in the left and right direction,
The bumper has a bent portion between an upper end edge and a lower end edge of the bumper , and the bent portion protrudes most in the forward direction,
A biasing member that biases the bent portion forward is provided between the front end of the housing and the bent portion of the bumper attached to the housing, and a lower end edge of the bumper is provided at the bent portion. It is located at a lower height than the
The vacuum cleaner main body has a control unit that can control the electric blower and the brush motor and can detect the load on the brush motor,
When the bent portion of the bumper comes into contact with an obstacle , the lower end edge of the bumper swings rearward against the urging force of the urging member, causing the rotation to rotate below the shaft portion of the rotating brush. The vacuum cleaner is characterized in that the control section is configured to increase the output of the electric blower when the brush comes into contact with the brush motor, thereby increasing the load on the brush motor to a predetermined value or more. 前記制御部は、前記電動送風機の出力増加を所定時間維持するように構成された請求項１に記載の電気掃除機。 The vacuum cleaner according to claim 1, wherein the control unit is configured to maintain an increase in the output of the electric blower for a predetermined period of time. 電動送風機および集塵部が設けられた掃除機本体と、前記掃除機本体に直接または延長管を介して接続される吸込口体とを備え、
前記吸込口体は、吸込口が設けられた底部を有する筐体と、前記筐体内の前記吸込口の近傍に設けられた回転ブラシと、前記筐体内に設けられて前記回転ブラシを回転させるブラシ用モータと、前記筐体が前進する方向の前端に左右方向の軸心を中心として揺動可能に設けられたバンパーとを有し、
前記バンパーは、前記バンパーの上端縁と下端縁との間に屈曲部を有し、前記屈曲部が前進する方向に最も突出しており、
前記筐体の前端と、前記筐体に取り付けられた前記バンパーの前記屈曲部との間に、前記屈曲部を前方に付勢する付勢部材が設けられ、前記バンパーの下端縁が前記屈曲部よりも下方の高さ位置に配置されており、
前記掃除機本体は、前記電動送風機および前記ブラシ用モータを制御可能、かつ、前記ブラシ用モータの負荷を検知可能な制御部を有し、
前記バンパーの屈曲部が障害物に当接することによって、付勢部材の付勢力に抗して前記バンパーの下端縁が後方へ揺動して前記回転ブラシの軸部よりも下方において回転する前記回転ブラシに接触し、それによって前記ブラシ用モータの負荷が所定値以上に増加したときに、前記制御部が吸引力を増加させるように構成されたことを特徴とする電気掃除機。 A vacuum cleaner main body provided with an electric blower and a dust collection part, and a suction port body connected to the vacuum cleaner main body directly or via an extension pipe,
The suction port body includes a casing having a bottom portion provided with a suction port, a rotating brush provided in the vicinity of the suction port within the casing, and a brush provided within the casing that rotates the rotating brush. and a bumper that is swingably provided at the front end in the direction in which the housing moves forward, about an axis in the left and right direction,
The bumper has a bent portion between an upper end edge and a lower end edge of the bumper , and the bent portion protrudes most in the forward direction,
A biasing member that biases the bent portion forward is provided between the front end of the housing and the bent portion of the bumper attached to the housing, and a lower end edge of the bumper is provided at the bent portion. It is located at a lower height than the
The vacuum cleaner main body has a control unit that can control the electric blower and the brush motor and can detect the load on the brush motor,
When the bent portion of the bumper comes into contact with an obstacle , the lower end edge of the bumper swings rearward against the urging force of the urging member, causing the rotation to rotate below the shaft portion of the rotating brush. The vacuum cleaner is characterized in that the control unit is configured to increase suction force when the brush comes into contact with the brush and the load on the brush motor increases to a predetermined value or more. 前記制御部は、前記電動送風機の吸引力増加を所定時間維持するように構成された請求項３に記載の電気掃除機。 The vacuum cleaner according to claim 3, wherein the control unit is configured to maintain the increase in suction force of the electric blower for a predetermined period of time. 前記回転ブラシは、軸部と、前記軸部の外周部に設けられたブラシ毛とを有し、
前記バンパーは、前記ブラシ毛と接触可能な下端縁を有し、
前記ブラシ毛の硬さと、前記バンパーの前記下端縁の形状とは、前記負荷が前記所定値以上となるように互いに調整されている請求項１～４のいずれか１つに記載の電気掃除機。 The rotating brush has a shaft portion and brush bristles provided on an outer peripheral portion of the shaft portion,
The bumper has a lower edge that can come into contact with the brush bristles,
The vacuum cleaner according to any one of claims 1 to 4, wherein the hardness of the brush bristles and the shape of the lower edge of the bumper are mutually adjusted so that the load is equal to or greater than the predetermined value. . 前記バンパーは、前記回転ブラシと接触可能な凹凸形の下端縁を有する請求項１～５のいずれか１つに記載の電気掃除機。 The vacuum cleaner according to any one of claims 1 to 5, wherein the bumper has an uneven lower edge that can come into contact with the rotating brush. 前記吸込口が、前記筐体の前記前端まで延びている請求項１～６のいずれか１つに記載の電気掃除機。 The vacuum cleaner according to any one of claims 1 to 6, wherein the suction port extends to the front end of the housing.
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