JP2007313099A - Suction port body and vacuum cleaner provided with the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a suction port body wherein thin and long dust such as waste thread is not entangled with a rotary cleaning body, and a vacuum cleaner provided with the same. <P>SOLUTION: The suction port body 12 comprises: a suction port main body 14 provided with a suction chamber 16, in which the suction opening 16a of the suction chamber 16 is opened on a bottom surface; the rotary cleaning body 17 for raking up the dust disposed in the suction chamber 16 along the suction opening 16a, whose both end parts are freely rotatably held by the suction port main body 14 so as to rake up the dust on a cleaning surface; and a driving motor 20 mounted on the suction port main body 14 for rotationally driving the rotary cleaning body 17. Also, the drive of the forward rotation and reverse rotation of the driving motor 20 is controlled by a control means 22. Also, the control means 22 is set so as to alternately execute the drive control of the forward rotation and reverse rotation of the rotary cleaning body 17 within the range of less than one rotation. Also, this vacuum cleaner has such the suction port body 12. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a suction port body provided with a rotary cleaning body that is rotationally driven by a drive motor and scrapes up dust on a cleaning surface, and an electric vacuum cleaner including the same.

  A conventional vacuum cleaner is connected to a vacuum cleaner body provided with a dust collection chamber and an electric blower that applies suction negative pressure to the dust collection chamber, and to the dust collection chamber via a dust collection hose and an extension pipe. Some have a suction port.

  As this suction port body, a suction chamber extending left and right is provided in the suction port body, the suction opening of this suction chamber is opened at the bottom surface of the suction port body, and a rotary cleaning body extending left and right along this suction opening is sucked. Installed indoors, the left and right ends of the rotary cleaning body are rotatably held by the suction port body, and the rotary cleaning body is driven to rotate by a drive motor, and the rotary cleaning body scrapes dust on the cleaning surface. There is something to be raised.

In such a suction port body, when the suction port body is pushed forward and the suction port body is moved forward, the rotary cleaning body is rotated forward (rotated in a direction to generate a traveling force toward the front side), It is also known that when the suction port body is pulled and the suction port body is operated to move backward, the rotary cleaning body rotates in the reverse direction (rotates in the direction to generate the traveling force toward the rear side). (For example, refer to Patent Document 1).
Japanese Patent Laid-Open No. 6-165741

  However, since such a suction port body is configured to rotate a large number of rotating cleaning bodies in the same direction for a long time, slender dust such as lint is often entangled with the rotating cleaning body. It was time consuming.

  Therefore, an object of the present invention is to provide a suction port body in which elongated dust such as lint is not entangled with the rotary cleaning body, and a vacuum cleaner including the suction port body.

  In order to achieve this object, a suction port body of the present invention is provided in a suction port body having a suction chamber and having a suction opening of the suction chamber opened on a bottom surface, and the suction chamber along the suction opening. In addition, a dust cleaning rotary cleaning body having both ends rotatably supported by the suction port main body so that dust on the cleaning surface can be scraped, and a rotary cleaning body mounted on the suction port main body to rotate the rotational cleaning body. A drive motor is provided. In addition, drive control of forward and reverse rotations of the drive motor is performed by the control means. Further, the control means is set so as to alternately perform drive control of forward rotation and reverse rotation of the rotary cleaning body within a range of less than one rotation. Moreover, the vacuum cleaner of this invention has such a suction inlet.

  Such a suction port body and a vacuum cleaner provided with the same can prevent slender dust such as lint from being entangled with the rotary cleaning body.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  In FIG. 1, reference numeral 1 denotes a vacuum cleaner body of a vacuum cleaner. The vacuum cleaner main body 1 includes a lower case 2, an upper case 3 attached on the rear portion of the lower case 2, and a dust collection chamber cover 4 attached on the front portion of the lower case 2 so as to be opened and closed vertically. Have.

  A dust collection chamber 5 is formed between the front portion of the lower case 2 and the dust collection chamber cover 4, and a blower chamber 6 is formed between the rear portion of the lower case 2. The dust collection chamber 5 and the blower chamber 6 are partitioned by a partition wall (not shown), and a communication path (not shown) that connects the dust collection chamber 5 and the blower chamber 6 is formed in the partition wall. Note that C is a power cord, and P is a power plug provided at the free end of the power cord C.

  Further, a hose connection port 2 a communicating with the dust collection chamber 5 is formed at the front end of the lower case 2, and a paper pack filter 7 that is a dust collection bag is disposed in the dust collection chamber 5. Is provided with an electric blower 8 for applying a suction negative pressure to the dust collection chamber 5. In addition, 8A is a suction opening of the electric blower 8. Further, a connecting cylinder 9 a provided at one end of the dust collecting hose 9 is connected to the hose connection port 2 a and the paper pack filter 7. A hand operating pipe 10 is connected to the other end of the dust collecting hose 9, and a suction port body 12 is connected to the hand operating pipe 10 via an extension pipe 11.

An operation panel 13 is provided on the local operation pipe 10. The operation panel 13 includes a switch Sa used to turn on and off a rotary cleaning body drive motor (power brush drive motor), which will be described later, provided in the suction port body 12, an ON operation of the electric blower 8, and its suction air volume. The switch Sb used for switching between “weak” and “medium”, the switch Sc for turning on the electric blower 8 to make the suction air flow “strong”, and the switch Sd used for turning off the electric blower 8 are provided. ing.
(Suction port)
As shown in FIG. 2, the suction port body 12 includes a suction port body 14 that extends in the left-right direction, and a connection pipe 15 that is held by the suction port body 14 so as to be tiltable in any direction. As shown in FIG. 3, a suction chamber 16 extending in the left-right direction is formed in the suction port body 14, and the suction chamber 16 communicates with the connection pipe 15 via a suction air passage (not shown). In FIG. 1, the connection pipe 15 is detachably fitted and connected to the distal end portion of the extension pipe 11.

  As shown in FIG. 3, the suction opening 16 a of the suction chamber 16 is opened at the bottom surface of the suction port body 14. In the suction chamber 16, a rotary cleaning body 17 extending along the suction opening 16a is disposed. The rotary cleaning body 17 includes a rotary shaft 18 and a plurality of brush bristles 19 projecting from the rotary shaft 18 in a spiral band shape.

The rotating shaft 18 is rotatably held at both ends of the suction port body 14. In addition, as shown in FIG. 1, a drive motor 20 for driving the rotary cleaning body is mounted in the rear portion of the inlet body 14. An output shaft (not shown) of the drive motor 20 is linked to the rotary shaft 18 of the rotary cleaning body 17 via a timing belt 21. Since a known configuration can be adopted for this configuration, detailed description thereof is omitted.
(Control circuit)
The operation panel (hand operation means) 13 described above is connected to the control means (arithmetic control circuit) 22 shown in FIG. The control means 22 is supplied with power from the power supply circuit 23. In addition, the power supply circuit 23 can be supplied with power from the commercial power source E shown in FIG. 4 by inserting the power plug P shown in FIG. 1 into a commercial power outlet (not shown in FIG. 1).

  In addition, when the switch Sb is turned on, the control means 22 drives the electric blower 8 via the thyristor 24 and alternately switches the suction air volume of the electric blower 8 between “weak” and “medium” each time the switch Sb is pressed. It is like that. In addition, when the switch Sc is turned on, the control unit 22 drives the electric blower 8 via the thyristor 25 to make the intake air amount of the electric blower 8 “strong”.

  Further, when the electric blower 8 is driven by operating the switches Sc and Sb, the control means 22 drives and controls the drive motor 20 of the suction port body 12 via the thyristor 25 when the switch Sa is pressed and turned on. It has become. At this time, the control means 22 controls the drive motor 20 to repeat forward rotation and reverse rotation alternately, and to rotate the rotary cleaning body 17 alternately forward rotation and reverse rotation within a range of less than one rotation. It has become. Moreover, when the electric blower 8 is driven, the control means 22 alternately turns the drive motor 20 on and off each time the switch Sa is pressed.

  Next, the operation of the vacuum cleaner having such a configuration will be described.

  In such a configuration, when the power plug P of FIG. 1 is inserted into a commercial power outlet (not shown in FIG. 1) and the switch Sb or the switch Sc is turned on, the control means 22 turns the electric blower 8 on the thyristor 24. The suction negative pressure of the electric blower 8 is applied to the dust collection chamber 5. This suction negative pressure acts on the suction chamber 16 of the suction port body 12 through the paper pack filter 7, the dust collecting hose 9, the hand operation pipe 10 and the extension pipe 11.

  The suction negative pressure causes the dust on the cleaning surface to be sucked into the suction chamber 16 together with air through the suction opening 16a. The air containing dust is sucked into the paper pack filter 7 through the extension pipe 11, the hand operation pipe 10 and the dust collecting hose 9, and then passes through the paper pack filter 7. At this time, dust is captured by the paper pack filter 7.

  And the air which permeate | transmitted the paper pack filter 7 is suck | inhaled in the electric blower 8 from the suction opening 8A, and after cooling the inside, it is discharged | emitted out of the electric blower 8 and from the exhaust port which the cleaner body 1 does not illustrate. Discharged into the atmosphere.

On the other hand, when the electric motor blower 8 is driven and the switch Sa is pressed to drive the drive motor 20, the control means 22 starts the control operation of the drive motor 20 according to the flowchart of FIG.
Step S1
In this flowchart, in step S1, the control means 22 rotates the drive motor 20 in the forward direction and proceeds to step S2. As a result, the rotation of the drive motor 20 is transmitted to the rotary cleaning body 17 via the timing belt 21, the rotary cleaning body 17 is rotated forward, and the dust on the cleaning surface is scraped up.
Step S2
In this step S2, it is determined whether or not the forward rotation of the drive motor 20 has elapsed for t1 seconds. When t1 seconds have not elapsed, the process returns to step S1 and loops. If t1 seconds have elapsed, the process proceeds to step S3. This t1 second is, for example, about 0.1 second, and is within a range in which the rotary cleaning body 17 does not rotate once.
Step S3
In step S3, the control means 22 reversely rotates the drive motor 20 and proceeds to step S4. As a result, the rotation of the drive motor 20 is transmitted to the rotary cleaning body 17 via the timing belt 21, the rotary cleaning body 17 is rotated in the reverse direction, and the dust on the cleaning surface is scraped up.
Step S4
In step S4, it is determined whether or not the reverse rotation of the drive motor 20 has elapsed t2. If t2 seconds have not elapsed, the process returns to step S3 and loops. If t2 seconds have elapsed, the process returns to step S1 and loops. This t2 seconds is, for example, about 0.1 seconds, and is within a range where the rotary cleaning body 17 does not rotate once.

  Such forward rotation and reverse rotation of the drive motor 20 by the control means 22 are repeatedly executed until the switch Sa is pressed again or the switch Sd is pressed. Thereby, the rotary cleaning body 17 repeats forward rotation and reverse rotation alternately in less than one rotation, and scrapes up dust on the cleaning surface. In addition, since the rotary cleaning body 17 does not rotate more than one turn in the forward or reverse direction, dust such as lint does not get entangled with the rotary cleaning body 17.

  By such a forward and reverse rotation (reciprocating rotation) of the rotary cleaning body 17 for a short time, dust on the cleaning surface is scraped up alternately in front and back, and the dust thus scraped is electrically blown as described above. It is trapped by the paper pack filter 7 with the suction negative pressure of.

  As described above, the suction port body 12 according to the embodiment of the present invention includes the suction port main body 14 having the suction chamber 16 and the suction opening 16a of the suction chamber 16 opening on the bottom surface, and the suction opening 16a. A rotary cleaning body 17 for scooping up dust that is disposed in the suction chamber 16 along the ends and rotatably held by the suction body 14 so that dust on the cleaning surface can be scraped up, and the suction body. 14, a drive motor 20 that rotates the rotary cleaning body 17 and a control means 22 that controls the drive of the drive motor 20 are provided. In addition, the control means 22 performs drive control of forward and reverse rotations of the drive motor 20. Further, the control means 22 is set so as to alternately perform forward and reverse drive control of the rotary cleaning body 17 within a range of less than one rotation. Moreover, the vacuum cleaner of this invention has such a suction inlet.

  Such a suction port body 12 and a vacuum cleaner provided with the same can prevent slender dust such as lint from being entangled with the rotary cleaning body.

  In addition, in the Example mentioned above, although the rotary cleaning body 17 was circular, it is not necessarily limited to this. For example, the rotary cleaning body 17 can be semicircular. For example, even if the rotating shaft 18 is shaft-shaped, the brush bristles 19 of the rotating shaft 18 may be provided in a spiral or linear shape in the axial direction in the range before and after the semicircle or narrower than the semicircle. This range is sufficient as long as the bristles 19 can scrape dust on the cleaning surface when the rotary shaft 18 reciprocates within a range of less than one rotation. In addition, although the example in which the rotation of the drive motor 20 is transmitted to the rotary shaft 18 via the timing belt 21 is shown, the rotation of the drive motor 20 is transmitted to the rotary shaft 18 via a gear transmission mechanism (a series of gears). You may make it transmit.

It is a schematic perspective view of a vacuum cleaner provided with the suction inlet concerning this invention. It is a perspective view of the suction inlet body of FIG. It is a bottom view of the suction inlet body of FIG. It is a control circuit diagram of the vacuum cleaner of FIG. It is a flowchart explaining control of the drive motor of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 12 ... Suction port body 14 ... Suction port main body 16 ... Suction chamber 16a ... Suction opening 17 ... Rotary cleaning body 20 ... Drive motor 22 ... Control means

Claims (2)

A suction port body having a suction chamber and a suction opening of the suction chamber opening on a bottom surface; and both ends of the suction chamber disposed in the suction chamber along the suction opening and capable of scraping dust on a cleaning surface; A rotary cleaning body for scraping dust that is rotatably held in the mouth body, and a drive motor that is mounted on the suction mouth body and drives the rotation cleaning body to rotate.
A suction port body in which drive control of forward rotation and reverse rotation of the drive motor is performed by a control means,
The suction port body, wherein the control means is set so as to alternately perform forward and reverse drive control of the rotary cleaning body within a range of less than one rotation. A vacuum cleaner comprising the suction port according to claim 1.

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