JP2005160958A - Vacuum cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vacuum cleaner having a suction port body determining a type of a cleaned surface and effectively polishing a floor such as burnishing, when the floor face is a flooring material. <P>SOLUTION: This vacuum cleaner is provided with an electric blower stored in a cleaner body, a dust collecting chamber collecting the dust by a suction force of the electric blower, a suction port body directly or indirectly connected to the cleaner body, a rotating cleaning body attached to the suction port body and having a polishing member, a cleaning body motor rotating the rotating cleaning body, a cleaned surface determining means determining the type of the cleaned surface, and a control means controlling the rotation speed of the cleaning body motor. When the cleaning object surface determining means determines it to be the cleaned surface of a type requiring polishing, the control means increases the rotating speed of the cleaning body motor. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention is directly or indirectly connected to a movable cleaner body or a central cleaner type vacuum cleaner body provided centrally in a part of a house, and moves a surface to be cleaned such as a floor surface together with air. The present invention relates to an electric vacuum cleaner having a suction port for sucking dust.

  For example, a suction port body connected to a conventional vacuum cleaner main body via a suction hose or an extension pipe controls the input power of the drive motor according to the type of the floor surface, and changes the rotational speed of the rotary brush. . That is, the type of floor surface is detected by the detection means, and the input power applied to the drive motor that rotates the rotating brush is set to be larger when the floor surface is flooring or tatami mats and has longer hairs such as carpets. Accordingly, in the former case, the rotating brush is not rotated, and in the latter case, the longer the hair of the carpet is rotated at a higher speed so that the garbage is sufficiently scraped. (For example, see Patent Document 1)

  Also, in other conventional suction ports, the type of the floor surface is detected by the detection means, and the rotation of the rotating blade is rotated at high speed with full power if the floor surface is a carpet, and in the case of a tatami mat, the medium rotation. In the case of flooring such as flooring, there is a thing which makes low rotation. When cleaning this floor, if a foreign object with a relatively large diameter, such as pebbles or beans, has fallen, switch the rotating blade from low rotation to medium rotation and securely suck these from the floor. So that it can be removed. (For example, see Patent Document 2)

JP-A-5-95882 JP-A-6-133909

  In these prior arts, the rotational speed of the rotary brush or rotary blade provided in the suction port body is set to high speed rotation when the floor is carpet, and to low speed rotation when flooring. However, in recent years, since a suction mouth body having a floor polishing function has been developed, the control method as described above, such as polishing when the floor is a flooring made of wood or plastic, etc. There was a problem that floor polishing was not performed effectively.

  The present invention has been made in view of the above circumstances, and it is effective to polish the surface to be cleaned, such as discriminating the type of floor surface and increasing the rotational speed of the rotary cleaning body when this is flooring or the like. An object of the present invention is to provide a vacuum cleaner having a suction port body.

  The present invention relates to an electric blower accommodated in a vacuum cleaner main body, a dust collection chamber for collecting dust by the suction force of the electric blower, and a suction connected to the vacuum cleaner main body directly or indirectly. Mouth body, rotary cleaning body attached to the suction port body and having a polishing member, cleaning body motor for rotating the rotary cleaning body, surface to be cleaned determining means for determining the type of surface to be cleaned, and cleaning body motor Control means for controlling the number of rotations of the cleaning body, and when the surface to be cleaned is determined to be a type of surface to be polished, the control means increases the number of rotations of the cleaning body motor. Is the main feature.

  The vacuum cleaner of the present invention has an improved polishing effect by increasing the number of rotations of the rotary cleaning body provided with the polishing member when the surface to be cleaned is detected by the suction port body. It is.

  Hereinafter, an embodiment of a vacuum cleaner according to the present invention will be described with reference to FIGS. 1 to 6. Although these show the vacuum cleaner which implemented this invention, this invention is not limited by this.

  FIG. 1 shows a vacuum cleaner according to one embodiment of the present invention. Reference numeral 1 denotes a vacuum cleaner main body. The vacuum cleaner main body 1 captures dust from the dust and air sucked from the floor surface to be cleaned and exhausts only the air to the outside. A pair of wheels provided on both sides The floor surface can be moved by 2.

  The vacuum cleaner body 1 includes a hollow case body 3 that is a dust collection chamber provided with a filter that filters dust sucked together with air, and an openable / closable lid body 4 that covers the upper surface opening of the case body 3. And an electric blower is built in close to the case body 3. A main body connecting pipe 5 having an inflow port of dust-containing air is provided in front of the vacuum cleaner main body 1, and an exhaust port 6 through which exhaust air discharged from the electric blower is discharged to the outside is provided.

  One end of a flexible suction hose 7 covered with a spiral wire and wound around the outer periphery is detachably connected to the main body connection pipe 5 by a main body clamping device 8. A hand operating unit 9 is attached to the other end. The hand operation unit 9 accommodates a part of the operation circuit, and can control an electric blower or the like built in the cleaner body 1 by the operation button 10. Further, one end portion of an extension tube 11 formed to be extendable and retractable by two long tubes is detachably fitted to the hand operation portion 9, and the other end portion 12 on the opposite side of the extension tube 11 is fitted to the hand operation portion 9. The end of the suction inlet 13 is fitted and attached so as to be detachable. Dust is sucked from the suction port body 13 together with air by the suction force generated by the rotation of the electric blower.

  2 and 3 show a suction port 13 of a vacuum cleaner according to one embodiment of the present invention. The main part of the suction port body 13 is covered with an upper case 15 and a lower case 16, and the floor surface can be moved mainly in the front-rear direction using a pair of wheels 17 provided on the lower case 16. The rotary cleaning body 18 is disposed at the suction port 19 opened on the lower surface of the lower case 16 close to the floor surface, and both ends of the rotary cleaning body 18 are rotatably supported by the lower case 16 on the outer periphery thereof. Two types of cleaning members 21 are attached in a spiral in 8 rows.

  The rotating shaft 20 is rotated via the timing belt 24 by the driving force of the cleaning body motor 23 that is a power source. A guide wall 27 is provided so that air containing dust sucked from the suction port 19 passes through the inside of the suction port body 13 and flows into the extension pipe 11 from the outlet 26 of the connection pipe 25. A series of lead wires 28 to which a signal for controlling the cleaning body motor 23 and electric power are sent are sent from a connector 29 provided in the connection pipe 25 to the extension pipe 11 and a lead wire (not shown) embedded in the suction hose 7. The vacuum cleaner main body 1 is connected to a main control circuit.

  The cleaning member 21 has a plate-like blade 30 made of plastic such as soft vinyl chloride or natural rubber, and has a height approximately twice as high as the blade 30 from the surface of the rotary shaft 20, and is a flexible reinforcement that becomes a core. It consists of a floor polishing member 33 as a polishing member in which the surface of the material is made of polyester and covered with an elongated plate-like raised cloth having raised portions on one side. The blades 30 and the floor polishing member 33 are alternately arranged in a spiral shape and arranged on the outer peripheral surface of the rotary shaft 20 at equal intervals, and the end portions are embedded and fixed in the rotary shaft 20. . The floor polishing member 33 is stretched in the radial direction by the centrifugal force while rotating in the direction of the arrow A, but the tip protrudes from the suction port 19 and is in contact with the floor surface by bending. The area will increase and the effect of floor polishing will increase.

  Next, referring to FIG. 4 which is a functional block diagram, a control circuit for controlling the entire vacuum cleaner, including the control of the cleaning body motor 23 that rotates the rotary cleaning body 18 provided in the suction port body 13, will be described. 35 is an AC power source, and by connecting a plug of an electric cord (not shown) provided in the cleaner body 1 to the AC power source 35 via an outlet, and setting the power switch of the hand operating unit 9 to the ON position, Electric power can be supplied to the electric blower 36 built in the cleaner body 1 and the cleaning body motor 23 of the suction port body 13. Reference numeral 37 denotes a control power supply of DC 5 volts, which causes the control circuit to function with the electric power obtained therefrom. Reference numeral 38 denotes a hand operating unit wired to the hand operating unit 9 such as the operation button 10.

  Reference numeral 39 denotes current detection means for detecting the waveform of the current flowing through the cleaning body motor 23, and is generally called a current sensor. This current detection means 39 serves as a surface to be cleaned discriminating means for discriminating the type of the floor surface to be cleaned based on the voltage value thus measured. Moreover, the control means 40 controls the electric circuit of the whole vacuum cleaner with a microcomputer etc. 41 and 42 are a blower control element and a cleaning element control element made of a thyristor, a triac, etc., which control the voltage applied to the electric blower 36 and the cleaning element motor 23 by a signal transmitted from the control means 40. Starts / stops and changes the rotation speed.

  Next, referring to FIGS. 5 and 6, the control of the number of rotations of the cleaning body motor 23 will be specifically described. When the cleaning body button of the hand operation unit 10 is pressed, a first gate signal is supplied from the control means 40 to the cleaning body control element 42, and 50% of the voltage is supplied to the driving circuit of the cleaning body motor 23. The cleaning body motor 23 starts to rotate.

  Then, from the state of t1 where the waveform of the current flowing through the cleaning body motor 23 is stable, the current flowing through the cleaning body motor 23 is converted into voltage by the current detection means 39 every predetermined time, and the output voltage at that time is shown in FIG. The threshold value V1 seen in FIG. If it is higher than the threshold value V1, it is determined that the surface to be cleaned is the floor surface of the carpet, the gate signal given from the control means 40 to the cleaning element control element 42 is kept constant, and the cleaning body motor 23 is obtained. Is maintained at 50%. The phenomenon that the output voltage measured by the current detecting means 39 becomes higher than the threshold value V1 is that the load on the cleaning body motor 23 increases due to the frictional resistance between the rotary cleaning body 18 and, for example, a carpet having a long bristle. It is because. In this state, if the rotational speed of the rotary cleaning body 18 is increased and high-speed rotation is continued, the load becomes excessive, which may cause the cleaning body motor 23 to burn out.

  On the other hand, if the load applied to the cleaning body motor 23 is small, and if it is lower than or equal to the threshold value V1, it is determined that the surface to be cleaned is a floor surface with low frictional resistance, for example, wooden or plastic flooring. Then, a second gate signal is given from the control means 40 to the cleaning element control element 42, the voltage supplied to the cleaning element motor 23 is supplied 100%, and the rotational speed of the rotary cleaning element 18 is increased to a predetermined value. . Even if the predetermined high-speed rotation is continued thereafter, the threshold value V1 is not exceeded because the frictional resistance of the floor surface is low. However, if the foreign matter is clogged in the suction port 19, the cleaning body When the threshold value V1 is exceeded due to an increase in the load of the motor 23, the voltage supply is lowered by the control signal and shifts to low speed rotation, so that it is possible to prevent the possibility of burning due to overload.

  As described above, the control signal supplied to the cleaning body control element 42 is changed by the control means 40 depending on whether the voltage detected by the current detection means 39 is higher or lower than the threshold value V1, and is supplied to the cleaning body motor 23. The number of rotations of the rotary cleaning body 18 is adjusted by switching the voltage. Thereby, in the case of a floor surface having a large frictional resistance of the rotary cleaning body 18 such as a carpet, the number of rotations is kept low, dust is sufficiently sucked by the suction port 19, and the frictional resistance of the rotary cleaning body 18 such as flooring is obtained. In the case of a floor surface that requires little floor polishing, the number of revolutions can be increased to enhance the glazing effect. Further, in the case of a floor surface with relatively little frictional resistance such as tatami mat, the control means is set so as to rotate at an intermediate speed between the carpet and the flooring in order to increase the dirt wiping effect by the floor polishing member 33. It is also possible to transmit a control signal from the cleaning element 40 to the cleaning element control element 42.

  In the above-described embodiment, the type of the surface to be cleaned is determined by the surface to be cleaned determining unit including the current detecting unit 39. However, the surface to be cleaned determining unit is not limited to this and is based on the intensity of reflected light from the floor surface. A surface to be cleaned discriminating means for judging whether it is a carpet or flooring, or a rigid ball that can be projected and lowered by its own weight toward the floor surface is attached to the suction port body 13, and it is judged whether it is a carpet or flooring by the amount of the rigid ball sinking into the floor surface. A surface to be cleaned may be used. As described above, the rotation speed of the cleaning body motor 23 can be adjusted by the control means that reflects the result of any surface to be cleaned discrimination means.

  The cleaning member 21 is composed of the blade 30 and the floor polishing member 33 having a raised cloth. However, the present invention is not limited thereto, and the cleaning member 21 may be composed entirely of the floor polishing member 33 which is a polishing member without providing the blade 30. Some of the floor polishing members 33 can be impregnated with an abrasive or a gloss generating agent. Furthermore, the surface to be cleaned is not limited to the floor surface, and may be, for example, a window glass surface or a wall surface.

  Furthermore, although the suction inlet 13 was connected to the cleaner body 1 through the suction hose 7 and the extension pipe 11, it is not limited to this, and a hand-held vertical cleaner such as a stick type or unmanned and freely moved for cleaning. In the case of a robot cleaner, it can be connected directly to the cleaner body. In addition, an electric blower and a dust collection chamber are provided in the main body of the vacuum cleaner provided in the machine room of one house, and piping connected to these is buried in the walls of each room, and suction hoses are connected to the piping in each room. The present invention can also be applied to a central cleaner type vacuum cleaner in which an extension pipe and a suction port are sequentially connected to enable cleaning. If this dust collection chamber is not provided in the main body of the vacuum cleaner and is detachably attached between the pipe and the suction hose, or between the suction hose and the extension tube, the dust collection chamber can be removed after cleaning the room. Thus, dust collected inside can be easily discarded.

It is a perspective view of the vacuum cleaner of one Example by this invention. (Example 1) It is the perspective view which removed the upper case from the suction inlet of the vacuum cleaner shown in FIG. It is sectional drawing of the suction inlet shown in FIG. It is a functional block diagram of the electric circuit of the vacuum cleaner shown in FIG. It is explanatory drawing based on the output voltage of the current detection means shown in FIG. It is a flowchart of the control state of the vacuum cleaner shown in FIG.

Explanation of symbols

1 Vacuum cleaner body 3 Case body (dust collection chamber)
9 Hand operation part 13 Suction port body 18 Rotary cleaning body 23 Cleaning body motor 33 Floor polishing member (polishing member)
39 Current detection means (cleaned surface discrimination means)
40 Control means

Claims (2)

  An electric blower housed in the vacuum cleaner body, a dust collection chamber for collecting dust by the suction force of the electric blower, a suction port body connected directly or indirectly to the cleaner body, and a suction port body A rotary cleaning body attached with a polishing member, a cleaning body motor for rotating the rotary cleaning body, a surface to be cleaned determining means for determining the type of the surface to be cleaned, and a control means for controlling the number of rotations of the cleaning body motor. And the control means increases the rotational speed of the cleaning body motor when the surface to be cleaned is determined to be a type of surface to be cleaned. Machine.   The electric vacuum cleaner according to claim 1, wherein a current detecting means is used as the surface to be cleaned discriminating means.

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