JP2007319353A - Vacuum cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vacuum cleaner which prevents not only the poor rotation of a rotary cleaning element along with sufficient suction of dusts but also troubles of a drive means for the rotary drive of the rotary cleaning element. <P>SOLUTION: The vacuum cleaner 10 has its body 11 provided with a dust collection chamber (dust collection part) 12 and an electric fan 13 for making a suction negative pressure work on the dust collection chamber 12, an intake port body 20 which contains a rotary brush (rotary cleaning element) 30 while communicating with the dust collection chamber 12 and a drive motor (driving) means 40 for the rotary drive of the rotary brush 30. It is equipped with a discriminating/reporting device (discriminating/reporting means) 100 which discriminates the amount of dust stuck on the rotary brush 30 while making a report according to it. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a vacuum cleaner provided with a suction port body incorporating a rotary cleaning body.

  2. Description of the Related Art Conventionally, a suction port body in which a rotary cleaning body that is rotationally driven by a motor that is a driving means is incorporated is known (see, for example, Patent Document 1).

In this suction port body, when the rotary cleaning body satisfies a predetermined condition, the rotation direction is reversed to prevent the entanglement of dust on the rotary cleaning body.
JP 2006-110089 A

  By the way, in the above-described suction port body, if the rotating cleaning body repeats reversal of the rotation direction in a short time, the dust cannot be sufficiently sucked and the dust may remain on the surface to be cleaned. there were.

  Further, when the rotating cleaning body is repeatedly reversed, an overload is applied to the motor that rotationally drives the rotating cleaning body, causing a problem that the motor breaks down early.

  Therefore, the present invention provides an electric vacuum cleaner that can sufficiently suck in dust, prevent rotation failure of the rotary cleaning body, and prevent failure of the driving means that rotationally drives the rotary cleaning body. The purpose is that.

  In order to solve the above-described problems, the present invention provides a vacuum cleaner body provided with a dust collection portion and an electric blower that applies suction negative pressure to the dust collection portion, and a rotary cleaning body that communicates with the dust collection portion. A vacuum cleaner comprising a built-in suction port and a driving means for driving the rotary cleaning body to rotate, and determining the amount of dust adhering to the rotary cleaning body and notifying according to the amount of dust It is characterized by having an informing means.

  According to the vacuum cleaner of the present invention, if the amount of dust attached to the rotary cleaning body reaches a predetermined amount, the user can be alerted, and a large amount of dust adheres to or entangles the rotary cleaning body. It is possible to prevent rotation failure.

  In addition, since the rotating cleaning body does not repeat reversal in a short time, the dust is not sucked in enough to leave unabsorbed.

  Furthermore, since the rotary cleaning body can be cleaned at an appropriate time, it is difficult to overload the drive means, and it is possible to prevent the drive means from being broken.

  Hereinafter, the best mode for carrying out a vacuum cleaner according to the present invention will be described with reference to the drawings.

  A vacuum cleaner 10 shown in FIG. 1 includes a vacuum cleaner body 11, a dust collection chamber (dust collection unit) 12 provided in the vacuum cleaner body 11, and an electric motor that applies a suction negative pressure to the dust collection chamber 12. A blower 13, a dust collection hose 14 having one end detachably connected to a hose connection port 11 a provided at the front of the cleaner body 11, and a hand-operated tube 15 provided at the other end of the dust collection hose 14 are attached and detached. An extension pipe (expandable pipe) 16 that is freely connected and a suction port body 20 that is detachably connected to the tip of the extension pipe 16 are provided.

  A dust collection bag 17 for collecting dust is detachably attached to the dust collection chamber 12. The operation tube 15 is provided with an operation portion 15a. The operation portion 15a is provided with strength switches S1 and S2 and an off switch S3 for setting the strength of the output of the electric blower 13, and the suction port body 20. A brush switch S4 for driving a drive motor 40 for the rotary brush 30 described later is provided.

  Further, the vacuum cleaner main body 11 is provided with a discrimination notification device (discrimination notification means) 100 (see FIG. 4) described later.

  On the other hand, the suction port body 20 has a suction port main body 21 that extends to the left and right with respect to the traveling direction, and a connection pipe 22 that is attached to the rear portion of the suction port main body 21 so as to be able to rise and fall. The connection pipe 22 is connected to the extension pipe 16.

  As shown in FIG. 2, the suction port body 21 includes a lower case 21a having an open upper surface, an upper case 21b covering the upper surface of the lower case 21a, and an upper cover 21c removably covering the front upper surface of the lower case 21a. A bumper 21d is sandwiched between the upper and lower cases 21a and 21b.

  In addition, a suction chamber 23 is defined on the front side of the suction port body 21, and a communication air passage 24 communicating with the suction chamber 23 is defined on the rear side. Further, a motor chamber 25 and a control circuit chamber 26 are defined behind the suction chamber 23 with the communication air passage 24 interposed therebetween.

  The suction chamber 23 has a suction port 27 that opens downward, and a rotary brush (rotary cleaning body) 30 is rotatably supported inside.

  The communication air passage 24 extends in the front-rear direction from the rear of the suction chamber 23 and communicates the suction chamber 23 with the connection pipe 22. A pair of wheels 28 are rotatably attached to both sides of the communication air passage 24.

  A drive motor 40 for the rotary brush 30 is disposed in the motor chamber 25, and a control circuit 50 for controlling the drive motor 40 and a grounding detection device (for detecting the grounding of the suction port body 20) in the control circuit unit 26. Ground contact detection means) 60 is disposed.

  The rotating brush 30 is held in an elongated substantially cylindrical shaft 31, a brush base 32 in which the shaft 31 penetrates and a plurality of engaging groove portions 32 a are formed on the outer peripheral surface, and an engaging groove portion 32 a of the brush base 32. And a pair of brush bristles 34 that are held in the engagement groove 32 a of the brush base 32 and are alternately positioned with the blade 33.

  The plurality of engaging groove portions 32a are linearly formed along the axial direction of the shaft 31, and are provided at equal intervals in the circumferential direction. The brush base 32 is formed of a flexible member that can be twisted, and is fixed to the shaft 31 in a state in which the engagement groove 32a is processed so as to be helically twisted. Thereby, as shown in FIG. 3, the braid | blade 33 and the bristle 34 are hold | maintained in the state twisted helically.

  Bearings 35 are provided at both ends of the shaft 31, and each bearing 35 is rotatably held in a shaft holding recess 29 formed in the lower case 21a.

  The drive motor 40 has a rotating shaft 41 that is rotated by driving of the driving motor 40 from one side, and a pulley 42 is concentrically attached to the rotating shaft 41. The pulley 42 is located behind one bearing 35 provided on the shaft 31, and an endless belt 43 is wound between the one bearing 35 and the pulley 42.

  As a result, when the drive motor 40 is driven, the rotary shaft 41 and the pulley 42 rotate together, and the belt 43 rotates along with this, so that one of the bearings 35 of the rotary brush 30 rotates, so that the rotary brush 30 rotates. It will be.

  The control circuit 50 outputs a control signal for controlling the drive operation of the drive motor 40 and is electrically connected to the brush switch S4 and the ground detection device 60.

  When an ON signal is input from the brush switch S4 and the ground detection device 60 to the control circuit 50, the control circuit 50 drives the drive motor 40.

  As shown in FIG. 3, the ground contact detection device 60 includes a roller 61 provided so as to be able to protrude from the bottom surface of the lower case 21 a and a roller chamber 62 in which the roller 61 is disposed.

  When the suction port 20 contacts the surface to be cleaned, the roller 61 comes into contact with the surface to be cleaned and is stored in the roller chamber 62, and an ON signal is output. Further, when the suction port body 20 is not grounded, the roller 61 protrudes from the lower case 21a, so that an ON signal is not output.

  The discrimination notification device 100 discriminates the amount of dust attached to the rotary brush 30 and notifies the user according to the amount of dust, and is provided between the power source D and the drive motor 40.

  Here, the discrimination notification device 100 is connected to the drive motor 40 via a start switch S5, which will be described later, provided in the suction port body 20.

  And this discrimination | determination alerting | reporting apparatus 100 has the control part 101, the electric current detection part 102, the display lamp 103, and the speaker 104, as shown in FIG.

  The control unit 101 performs blinking control of the display lamp 103 and volume control of the speaker 104 in accordance with a current signal input from the current detection unit 102. The control unit 101 is electrically connected to the start switch S5, and starts when the start switch S5 is turned on, that is, a current flows.

  The current detection unit 102 is a so-called ammeter, and measures a current value flowing through the drive motor 40 and outputs a predetermined current signal to the control unit 101.

  The display lamp 103 is configured by an LED or the like, and blinks in response to a predetermined control signal input from the control unit 101. Although not shown here, the display lamp 103 is provided on the upper surface of the cleaner body 11 so that the user can easily see it.

  The speaker 104 generates a warning sound according to a predetermined control signal input from the control unit 101.

  The start switch S5 is provided, for example, on the upper surface of the suction inlet body 21 (not shown in FIG. 1), and is turned ON / OFF at an arbitrary timing by a user's manual operation.

  When the start switch S5 is turned on, a current flows through the drive motor 40 and the determination notification device 100, and the amount of dust attached to the rotating brush 30 can be known.

  Next, the effect | action of the vacuum cleaner 10 comprised as mentioned above is demonstrated.

  In order to use this vacuum cleaner 10, after attaching the dust bag 17 in the dust chamber 12, the strong switch S1 or the weak switch S2 of the operation portion 15a of the hand operation tube 15 is turned on.

  When the strength switches S <b> 1 and S <b> 2 are turned on, the electric blower 13 is driven, and suction negative pressure acts in the dust collection chamber 12.

  This suction negative pressure acts on the dust collection hose 14, the extension pipe 16, and the suction port body 20 in order via the dust collection bag 17. Thereby, dust is sucked together with air from the suction port 27 of the suction port body 20.

  The sucked dust and air flow into the suction chamber 23 of the suction port body 20, and sequentially pass through the connection pipe 22, the extension pipe 16, and the dust collection hose 14 through the communication air passage 24 to the dust collection chamber 12. The dust is sucked and collected in the dust bag 17.

  Here, when the suction port body 20 is securely in contact with the surface to be cleaned, the roller 61 of the ground detection device 60 comes into contact with the surface to be cleaned and is stored in the roller chamber 62, and is controlled from the ground detection device 60. An ON signal is output to the circuit 50.

  At this time, when the brush switch S4 of the operation unit 15a of the hand operation tube 15 is turned ON, an ON signal is output from the brush switch S4 to the control circuit 50.

  Thus, when the ON signal is input from the brush switch S4 and the ground detection device 60 to the control circuit 50, the control circuit 50 drives the drive motor 40, and the rotary brush 30 rotates accordingly. . Thereby, the dust on the surface to be cleaned is sucked in while being scraped up.

  On the other hand, in order to know the amount of dust adhering to the rotary brush 30, first, the off switch S3 of the operation unit 15a of the hand operation tube 15 is turned on, and the electric blower 13 is stopped.

  Then, the suction port body 20 is grounded on a relatively flat surface to be cleaned such as flooring, and the start switch S5 is turned on without moving the suction port body 20.

  Thereby, an electric current flows into the drive motor 40 and the discrimination | reporting alerting | reporting apparatus 100, and the rotating brush 30 rotates. At this time, if the suction port 20 is not securely grounded, the grounding detection device 60 does not output an ON signal, so that the drive motor 40 is not driven and the rotating brush 30 does not rotate.

  As the amount of dust attached to the rotating brush 30 increases, the load on the drive motor 40 increases. That is, the current value increases as the amount of dust attached to the rotating brush 30 increases. The current value is measured by the current detection unit 102, and a predetermined current signal corresponding to the measured current value is input to the control unit 101.

  When the current signal input from the current detection unit 102 exceeds a preset threshold, the control unit 101 determines that a predetermined amount of dust has adhered to the rotating brush 30 and performs predetermined control on the display lamp 103 and the speaker 104. Output a signal.

  As a result, the display lamp 103 is turned on and a warning sound is generated from the speaker 104 to notify the user that the amount of dust attached to the rotating brush 30 has reached a predetermined amount. In this way, the user is urged to care for the rotating brush 30, and it is possible to prevent a rotation failure from occurring due to a large amount of dust adhering to the rotating brush 30 or entanglement of thread-like dust.

  Further, since it is possible to prevent the rotation failure from occurring even if the rotating brush 30 does not repeat reversal in a short time, the surface dust to be cleaned is not sufficiently sucked and left unabsorbed.

  Further, since it is notified that the rotary brush 30 needs to be maintained at an appropriate time, it can be maintained at an appropriate time, and the drive motor 40 is less likely to be overloaded, thereby preventing the drive motor 40 from being damaged. It becomes possible.

  In the vacuum cleaner 10, when the start switch S <b> 5 is turned on, a current flows through the drive motor 40 and the determination notification device 100, and the amount of dust attached to the rotating brush 30 is determined.

  As a result, the amount of dust adhering to the rotating brush 30 can be determined in a stable state in which the load applied to the drive motor 40 is unlikely to change, that is, on a relatively flat surface to be cleaned such as flooring. Can be achieved.

  Further, in the vacuum cleaner 10, a grounding detection device 60 that detects that the suction port body 20 is installed is provided, and after the ON signal is output from the installation detection device 60, the vacuum cleaner 10 is attached to the rotating brush 30. The amount of dust is discriminated.

  Thereby, the load applied to the drive motor 40 can be further stabilized, and the discrimination accuracy can be further improved.

  Although one embodiment according to the present invention has been described in detail with reference to the drawings, the specific configuration is not limited to the above-described embodiment. Design changes and the like within the scope not departing from the gist of the present invention are included in the present invention.

  In the above-described embodiment, the determination notification device 100 is started at an arbitrary timing by turning ON the start switch S5. However, the determination notification device 100 may be automatically performed at each timing such as when cleaning is completed or when cleaning is started. .

  Further, the color of the display lamp 103, the volume of the warning sound from the speaker 104, and the like may be changed stepwise according to the amount of dust attached to the rotating brush 30. Thereby, the extent of the amount of dust attached can be grasped.

  Furthermore, in the above-described embodiment, the amount of dust attached to the rotary brush 30 is determined by measuring the value of the current flowing through the drive motor 40. However, for example, based on the rotational speed, rotational speed, etc. May be determined.

  The display lamp 103 may be provided on the upper surface of the hand operation tube 15 or the suction port body 20. This makes it easier for the user to visually check and allows easy recognition. The start switch S5 may also be provided on the hand control tube 15 or the cleaner body 11. In the embodiment described above, the discrimination notification device (discrimination notification means) of the present invention is applied to a canister type vacuum cleaner. However, the present invention is not necessarily limited thereto. For example, the discrimination notification device (discrimination notification means) of the present invention can also be applied to an upright type or a handy type vacuum cleaner.

It is the perspective view which showed the external appearance of the vacuum cleaner which concerns on this invention. It is sectional drawing which showed the cross section of the suction inlet shown in FIG. It is a bottom view which shows the state which removed the lower cover of the suction inlet shown in FIG. It is a block diagram which shows the relationship between a determination alerting | reporting apparatus, a drive motor, and a rotating brush.

Explanation of symbols

10 Vacuum Cleaner 11 Vacuum Cleaner Body 12 Dust Collection Chamber (Dust Collection Unit)
13 Electric blower 20 Suction port 30 Rotating brush (Rotating cleaning body)
40 Drive motor (drive means)
100 discrimination notification device (discrimination notification means)

Claims (3)

A vacuum cleaner body provided with a dust collector and an electric blower that applies a suction negative pressure to the dust collector, a suction port that communicates with the dust collector and incorporates a rotary cleaner, and rotates the rotary cleaner A vacuum cleaner comprising driving means for driving,
An electric vacuum cleaner comprising: discrimination notification means for discriminating the amount of dust adhering to the rotary cleaning body and informing according to the amount of dust.   2. The electric vacuum cleaner according to claim 1, further comprising a start switch for starting the discrimination notification means.   The ground contact detection means for detecting that the suction port body is grounded on the surface to be cleaned is provided, and the discrimination notification means is started after the ground contact detection means detects the ground contact. 2. The vacuum cleaner according to 2.

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