JP2011172747A - Vacuum cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vacuum cleaner capable of securely detecting abnormality in the rotation of a rotary brush and capable of informing a user of the detected abnormality. <P>SOLUTION: The rotational frequency of the rotary brush 35 is detected based on the vibration of a floor brush detected by a vibration detecting means 57. The rotational frequency of the rotary brush 35 is securely detected regardless of the irregularity of characteristics of a motor 36. The abnormality in rotation of the rotary brush 35 is determined if the detected rotational frequency of the rotary brush 35 is a prescribed rotational frequency or lower, and the determined abnormality is announced. In this way, the abnormality in rotation of the rotary brush 35 can be securely detected to be announced to the user. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a vacuum cleaner including a suction port body having a rotary cleaning body that is rotationally driven by an electric motor.

  Conventionally, in this type of vacuum cleaner, a floor brush serving as a suction port body is connected to a vacuum cleaner body containing an electric blower via a hose body and an extension pipe. The floor brush includes a horizontally long case body and a connection pipe connected to the case body. A rotating brush as a rotary cleaning body is rotatably attached to the suction opening of the case body. An electric motor that rotates the rotary brush is housed inside the case body.

  Here, when the hair on the floor as the surface to be cleaned is cleaned, the hair may get entangled with the rotating brush. When hairs or the like are entangled with the rotating brush in this way, the rotating brush stops rotating, and the electric motor that rotates the rotating brush may be locked. Therefore, a configuration is known in which the current value of the motor is detected so that the motor is not damaged by such a lock, the motor lock is detected based on the current value, and the motor is stopped when the lock is detected. (For example, refer to Patent Document 1).

Japanese Patent Laying-Open No. 2008-73224 (page 6-9, FIG. 4)

  However, since the characteristics of the motors vary individually, when the motor lock is detected based on the current value of the motor as described above, the motor cannot be stopped when it is desired to stop the motor. For example, when cleaning a heavy (high load) floor such as a carpet with long bristle feet, there is a problem that the electric motor may be erroneously stopped.

  This invention is made | formed in view of such a point, and it aims at providing the vacuum cleaner which can detect a rotation abnormality of a rotary cleaning body reliably, and can alert | report to a user.

  The present invention relates to a case body having a suction port, a rotating body rotatably attached to the case body, and a cleaning that protrudes from the rotating body at least partially including a linear straight portion along the axial direction of the rotating body. A rotary cleaning body having a member, an electric motor that rotationally drives the rotary cleaning body, a suction port body that communicates the suction port with the suction side of the electric blower, and a vibration detection means that detects vibration of the suction port body And the rotation speed of the rotary cleaning body is detected based on the vibration of the suction port detected by the vibration detection means, and the rotation abnormality of the rotary cleaning body is notified when the detected rotation speed is equal to or lower than the predetermined rotation speed. And a control means.

  According to the present invention, by detecting the rotation speed of the rotary cleaning body based on the vibration of the suction port detected by the vibration detection means, the rotation speed of the rotary cleaning body can be reliably detected regardless of variations in the characteristics of the electric motor. When the detected rotational speed is equal to or lower than the predetermined rotational speed, the rotational cleaning body is judged to be abnormal in rotation and notified, so that the rotational abnormality of the rotational cleaning body can be reliably detected and notified to the user. .

It is a block diagram which shows the internal structure of the vacuum cleaner of the 1st Embodiment of this invention. It is a longitudinal cross-sectional view which shows typically the suction inlet body of a vacuum cleaner same as the above. It is a top view which shows a suction port body same as the above. It is a perspective view which shows a vacuum cleaner same as the above. It is a graph showing an electrical waveform corresponding to the vibration pattern in the vertical direction of the case body of the suction port body detected by the vibration detection means of the electric vacuum cleaner same as above, (a) cleans the hard surface to be cleaned (B) shows a state where a soft surface to be cleaned is being cleaned. It is a flowchart which shows a part of control of a vacuum cleaner same as the above. It is a block diagram which shows the internal structure of the vacuum cleaner of the 2nd Embodiment of this invention. It is a flowchart which shows a part of control of a vacuum cleaner same as the above. It is a flowchart which shows a part of control of the vacuum cleaner of the 3rd Embodiment of this invention. It is a block diagram which shows the internal structure of the vacuum cleaner of the 4th Embodiment of this invention. It is a flowchart which shows a part of control of a vacuum cleaner same as the above. It is a block diagram which shows the internal structure of the vacuum cleaner of the 5th Embodiment of this invention. It is a flowchart which shows a part of control of a vacuum cleaner same as the above. It is a flowchart which shows a part of control of the vacuum cleaner of the 6th Embodiment of this invention.

  The configuration of the first embodiment of the present invention will be described below with reference to the drawings.

  In FIG. 4, reference numeral 11 denotes a so-called canister-type vacuum cleaner. The vacuum cleaner 11 includes a vacuum cleaner main body 12 and a pipe portion 13 which is an air passage forming body detachably connected to the vacuum cleaner main body 12. And have.

  The vacuum cleaner main body 12 includes a hollow main body case 15 that can swivel and run on the floor surface, and a main body dust collection chamber and an electric blower chamber (not shown) are partitioned in the front and rear in the main body case 15. ing. Furthermore, an electric blower 18 is accommodated in the electric blower chamber, and the suction side of the electric blower 18 communicates with the main body dust collection chamber. Further, a dust collecting section such as a filter, a dust collecting bag, or a dust collecting device (dust collecting cup) is disposed in the main body dust collecting chamber. A main body suction port 19 is formed in the front portion of the main body case 15 so as to communicate with the main body dust collection chamber and to which the proximal end side of the pipe portion 13 is connected.

  Further, the pipe part 13 includes a connecting pipe part 21 connected to the main body suction port 19, a flexible hose body 22 communicating with the distal end side of the connecting pipe part 21, and a distal end side of the hose body 22. A hand operating part 23 provided and an extension pipe 24 detachably connected to the distal end side of the hand operating part 23 are provided, and a floor brush 25 as a suction port body is provided at the distal end side of the extension pipe 24. Is removable. Furthermore, a gripping portion 28 protrudes toward the hose body 22 on the hand operating portion 23, and the gripping portion 28 has a plurality of setting buttons 29 as operation means for setting the operation mode of the electric blower 18, respectively. Is provided.

  As shown in FIGS. 2 to 4, the floor brush 25 is connected in a longitudinally extending manner in the left-right width direction, that is, a horizontally long case body 31 and rotatably connected to a substantially central position of the case body 31 in the left-right width direction. Connected pipe 32. A suction port 34 that is long in the left-right width direction is formed in the lower portion of the case body 31, and a rotary brush 35 as a rotary cleaning body is rotatably disposed in the suction port 34. In addition, an electric motor 36 is accommodated in the case body 31 as driving means for driving the rotary brush 35 to rotate.

  The rotating brush 35 includes a shaft portion 41 as a long rotating body, and long blade members 42 and 42 as cleaning members attached to protrude outward from the shaft portion 41 (first), A first short blade member 43, 43 serving as a (second) cleaning member and a second short blade member serving as a (third) cleaning member projecting outward from the shaft portion 41 between the long blade members 42, 42. 44 and 44 are integrated. The long blade member 42, the first short blade member 43, and the second short blade member 44 are disposed at substantially equal intervals in the circumferential direction of the shaft portion 41, and the long blade member is disposed in the circumferential direction of the rotating brush 35. 42, first short blade member 43, second short blade member 44, long blade member 42, first short blade member 43, and second short blade member 44 in this order. Each blade member 42, 43, 44 may be formed separately from the shaft portion 41 and attached to the shaft portion 41, or may be formed integrally with the shaft portion 41.

  The shaft portion 41 is made of, for example, metal or synthetic resin. Further, both end portions of the shaft portion 41 are rotatably attached to both side portions of the suction port 34 of the floor brush 25 via a bearing (not shown).

  The long blade members 42, 42 are for cleaning by contact with a relatively hard and flat floor surface such as flooring or tatami mat, for example. And are attached at positions symmetrical to each other with respect to the center of the shaft portion 41 in a sectional view. Further, each long blade member 42 is continuous over both ends of the shaft portion 41 and protrudes from the outer peripheral surface of the shaft portion 41 in a wall shape. Further, each long blade member 42 is provided at the end portion of the shaft portion 41 with a (first) vibration applying portion as a linear (first) linear portion along the axial direction (longitudinal direction) of the shaft portion 41. The straight portions 42a and 42b are provided, and a portion between the straight portions 42a and 42b is a (first) twisted portion 42c spirally twisted in the circumferential direction of the shaft portion 41. Accordingly, each long blade member 42 is twisted, for example, by 180 ° in the circumferential direction from one end side to the other end side of the shaft portion 41, and the straight portion 42a (straight portion 42b) of one long blade member 42 is the other The long blade member 42 is positioned so as to be in phase with the straight portion 42b (straight portion 42a) of the long blade member 42, that is, in contact with the floor surface simultaneously when the rotating brush 35 rotates.

  The first short blade members 43 and 43 and the second short blade members 44 and 44 are relatively soft, such as carpets, for cleaning against the floor surface into which the floor brush 25 sinks. It is formed in a thin plate shape (blade shape) by rubber or the like having flexibility and elasticity similar to those of 42 and 42, and is attached at positions symmetrical to each other with respect to the center of the shaft portion 41 in a sectional view. The short blade members 43 and 44 are continuous over the entire length between both ends of the shaft portion 41, and project from the outer peripheral surface of the shaft portion 41 in a wall shape. Further, each first short blade member 43 and each second short blade member 44 has a smaller amount of outward protrusion with respect to the outer peripheral surface of the shaft portion 41 than the long blade member 42. Here, the first short blade member 43 and the second short blade member 44 have the same amount of outward protrusion with respect to the outer peripheral surface of the shaft portion 41, but may be configured differently. .

  In addition, each first short blade member 43 has a (second) vibration as a linear (second) linear portion along the axial direction (longitudinal direction) of the shaft portion 41 at the end of the shaft portion 41. Straight portions 43a and 43b which are imparting portions are provided, and a portion between the straight portions 43a and 43b is a (second) twisted portion 43c spirally twisted in the circumferential direction of the shaft portion 41. Accordingly, each first short blade member 43 is twisted, for example, 180 ° in the circumferential direction from one end side to the other end side of the shaft portion 41, and the straight portion 43a (straight portion 43b) of one of the first short blade members 43 is twisted. ) Are in the same phase with respect to the straight portion 43b (straight portion 43a) of the other first short blade member 43, that is, so as to come into contact with the floor surface simultaneously when the rotating brush 35 rotates.

  Similarly, each second short blade member 44 is provided at the end of the shaft portion 41 as a (third) linear portion that is linear along the axial direction (longitudinal direction) of the shaft portion 41. Straight portions 44a and 44b which are vibration imparting portions are provided, and a portion between the straight portions 44a and 44b is a (third) twisted portion 44c spirally twisted in the circumferential direction of the shaft portion 41. Accordingly, each second short blade member 44 is twisted, for example, by 180 ° in the circumferential direction from one end side to the other end side of the shaft portion 41, and the straight portion 44a (straight portion 44b) of one second short blade member 44 is twisted. ) Is in the same phase with respect to the straight portion 44b (straight portion 44a) of the other second short blade member 44, that is, is positioned so as to contact the floor surface simultaneously when the rotating brush 35 rotates.

  The electric motor 36 transmits a rotational force to the shaft portion 41 of the rotary brush 35 via a power transmission means 46 such as a belt.

  The connection pipe 32 communicates with the suction port 34 and is detachably connected to the distal end side of the pipe portion 13 (extension pipe 24) shown in FIG.

  Next, the internal configuration of the first embodiment will be described with reference to FIG.

  In the vacuum cleaner main body 12 (FIG. 4), a main body control unit 51 as a control means for controlling the operation of the electric blower 18 and the electric motor 36 is disposed. The main body control unit 51 is a microcomputer provided with an operation determination unit that determines the setting operation of the setting button 29, a storage unit that stores various data, and the like. For example, a commercial AC power source e and a plug unit 52 (FIG. 4). ). In addition, the main body control unit 51 is electrically connected to a display unit 53 as a notification unit. The display unit 53 is, for example, a liquid crystal display unit or an LED. The display unit 53 is an upper part of the cleaner body 12 (FIG. 4), an upper part of the case body 31 (FIG. 2) of the floor brush 25, or a hand operation unit 23 (FIG. 4). ), Etc., which are easy to see by the user during cleaning. The main body control unit 51 can control the phase of the electric blower 18 and the electric motor 36 via control elements C1 and C2 such as a triac.

  As shown in FIGS. 1 and 2, vibration detection means 57 for detecting the vertical vibration of the floor brush 25 (case body 31) is attached in the floor brush 25. The vibration detecting means 57 is, for example, an acceleration sensor or the like. When the rotating brush 35 of the floor brush 25 is rotated, the floor brush 25 (case body 31) generated when each blade member 42 to 44 contacts the floor surface. ) In the vertical direction can be detected. Further, the vibration detecting means 57 is preferably located at a position corresponding to the straight portions 42a, 43a, 44a (FIG. 3) of the rotating brush 35, in the present embodiment, in the vicinity of the end portion of the shaft portion 41 of the rotating brush 35, ie, rotating. The brush 35 is disposed in the vicinity (rear) of the position of the shaft support (attachment) to the case body 31. In other words, the vibration detection means 57 is arranged in the vicinity of the portion where the vibration of the rotary brush 35 is transmitted to the case body 31 to the maximum. Further, the vibration detection means 57 can output the detected vertical vibration pattern of the floor brush 25 (case body 31) as an electrical waveform, that is, a current value, via the signal output unit 58. The vibration detecting means 57 and the signal output unit 58 are each supplied with power from the cleaner body 12 side, but may be provided with a separate power source in the floor brush 25, for example. Then, the current value output from the signal output unit 58 is received by the signal receiving unit 59 disposed in the cleaner body 12, and the signal is read by the main body control unit 51 connected to the signal receiving unit 59. It is configured as follows. The main body control unit 51 has a function of detecting the vibration pattern of the floor brush 25 based on the read signal and detecting (estimating) the rotation speed of the rotary brush 35 (the electric motor 36) based on the vibration pattern. .

  Next, the operation of the first embodiment will be described.

  When cleaning, the user connects the connecting pipe part 21 of the pipe part 13 to the main body suction port 19 of the cleaner body 12 fitted with the dust collecting part as shown in FIG. After making it possible to supply power to the vacuum cleaner 11 such as by connecting to the power source e (FIG. 1), the grip portion 28 is gripped and the setting button 29 corresponding to the desired operation mode is operated.

  This operation is determined by the operation determination means of the main body control unit 51 shown in FIG. 1, and this system control unit 51 controls the phase of the electric blower 18 through the control element C1, thereby setting the operation mode set by the user. Thus, the electric blower 18 operates, and the negative pressure generated by the operation of the electric blower 18 acts on the pipe portion 13 through the dust collecting portion.

  In this state, by moving the floor brush 25 shown in FIG. 2 back and forth on the floor surface, the user sucks and cleans dust on the floor surface together with air from the suction port 34 by the action of negative pressure.

  The sucked air becomes intake air, moves along with the dust, the tube portion 13 shown in FIG. 4 to the cleaner main body 12 side, and is sucked from the main body suction port 19 into the dust collecting portion. After the dust is separated in the dust collecting section, the intake air is sucked into the electric blower 18, passes through the electric blower 18 while cooling, and becomes exhaust air. From the electric blower 18 to the electric blower chamber And is further exhausted to the outside of the cleaner body 12 through an exhaust hole (not shown) formed in the main body case 15.

  Further, when it is desired to more strongly remove dust on the floor surface during cleaning, the user operates the setting button 29 to operate the rotating brush 35 (electric motor 36).

  This operation is determined by the operation determination means of the main body control unit 51 shown in FIG. 1, and the main body control unit 51 controls the phase of the electric motor 36 via the control element C2, so that the electric motor 36 is driven. The rotating brush 35 is driven to rotate.

  For example, when the floor surface is relatively hard such as flooring, the rotary brush 35 shown in FIGS. 2 and 3 has only the long blade member 42 in contact with the floor surface and rubs the dust adhering to the floor surface. take. At this time, the long blade member 42 causes the floor brush 25 to vibrate in the vertical direction every time the straight portion 42a or the straight portion 42b contacts the floor surface. In addition, the twisted portion 42c of the long blade member 42 maintains the state of being in continuous contact with the floor surface, for example, from the portion on the straight portion 42a side to the portion on the straight portion 42b side. Compared with the case where 42b contacts the floor surface, the vertical vibration generated in the floor brush 25 becomes relatively small. As a result, since a relatively large vibration is generated only at the timing when the straight portion 42a or the straight portion 42b contacts the floor surface, the vertical vibration pattern of the case body 31 of the floor brush 25 detected by the vibration detecting means 57 is obtained. The pattern has a peak at every predetermined interval T1 (FIG. 5A).

  In addition, for example, when the floor surface is relatively soft such as a carpet and the floor brush 25 sinks, the rotating brush 35 has a short blade member 43 and 44 in contact with the floor surface in addition to the long blade member 42, and the floor surface. Tap out the dust. At this time, the long blade member 42 causes the floor brush 25 to vibrate in the vertical direction every time the straight portion 42a or the straight portion 42b contacts the floor surface, and the twisted portion 42c is, for example, the straight portion 42a with respect to the floor surface. In order to keep maintaining the state of continuous contact from the portion on the side to the portion on the straight portion 42b side by side, the vertical direction generated in the floor brush 25 compared with the case where the straight portions 42a, 42b are in contact with the floor surface The vibration of becomes small. Further, the short blade members 43 and 44 are each more straight when the straight portions 43a and 43b or the straight portions 44a and 44b are in contact with the floor surface than when the straight portions 42a and 42b of the long blade member 42 are in contact with the floor surface. Is generated in the floor brush 25, and when the twisted portions 43c and 44c are in contact with the floor surface, the vertical vibration generated in the floor brush 25 is generated in the same manner as the twisted portion 42c of the long blade member 42. Is relatively smaller than when the straight portions 43a, 43b or the straight portions 44a, 44b are in contact with the floor surface. As a result, a relatively large vibration occurs when the straight portion 42a or the straight portion 42b comes into contact with the floor surface, and a relatively small vibration occurs when the straight portion 43a, 43b or the straight portions 44a, 44b contact the floor surface. Since vibration is generated, the vibration pattern in the vertical direction of the case body 31 of the floor brush 25 detected by the vibration detecting means 57 is relative at every predetermined interval T2 (≈1 / 3 × T1) shorter than the predetermined interval T1. In this pattern, a large peak, a relatively small peak, and a relatively small peak are sequentially formed (FIG. 5B).

  Accordingly, as shown in FIG. 6, the main body control unit 51 outputs the current output via the signal output unit 58 corresponding to the vertical vibration pattern of the case body 31 of the floor brush 25 detected by the vibration detection means 57. Change in value (electrical waveform) is read through the signal receiver 59, and when the read current value change, the straight parts 42a, 42b of the long blade member 42 come into contact with the floor surface The rotation number of the rotating brush 35 is detected (estimated) by reading the interval T1 of the peak values to be performed (step 1).

  Then, the main body control unit 51 determines whether or not the detected rotation speed of the rotating brush 35 is equal to or less than a predetermined rotation speed set in advance (step 2), and the detected rotation speed of the rotating brush 35 is set in advance. When it is determined that the rotation speed is equal to or lower than the predetermined number of rotations, the rotation abnormality of the rotating brush 35 (electric motor 36), for example, low-speed rotation due to high load or lock is notified to the user via the display unit 53 (step 3) Returning to Step 1, when it is determined that the detected rotational speed of the rotary brush 35 is not less than or equal to a predetermined rotational speed set in advance, the process returns to Step 1 as it is.

  Note that the control shown in FIG. 6 may be performed in parallel to the main control that controls the input of the electric blower 18 in response to the operation of the setting button 29, for example, or interrupts at predetermined intervals during the main control. You may go on.

  As described above, according to the first embodiment, the main body control unit 51 detects the number of rotations of the rotary brush 35 based on the vibration of the case body 31 of the floor brush 25 detected by the vibration detection means 57. Thus, the rotational speed of the rotary brush 35 is reliably detected regardless of variations in the characteristics of the electric motor 36, and the rotational brush 35 is abnormal in rotation when the detected rotational speed is equal to or lower than the predetermined rotational speed (the motor 36 Since the display unit 53 determines that a high load has been applied or the motor 36 has been locked), the rotation abnormality of the rotating brush 35 (the motor 36) can be reliably detected and notified to the user.

  That is, since the characteristics of the electric motor 36 vary individually, if the current value of the electric motor 36 is detected and an attempt is made to detect rotation abnormality of the rotating brush 35 (electric motor 36) only with this current value, the detection will vary. There is a fear. Therefore, in the first embodiment, the vibration pattern of the floor brush 25 (case body 31) generated by the contact between the long blade member 42 of the rotating brush 35 and the floor surface is not the current value of the electric motor 36 that is likely to vary. Is detected by the vibration detecting means 57, and the rotational speed of the rotary brush 35 is detected, so that the rotation abnormality of the rotary brush 35 (electric motor 36) can be reliably detected based on the rotational speed of the rotary brush 35.

  Since the rotation abnormality of the rotating brush 35 can be detected with certainty, the rotation abnormality of the rotating brush 35 caused by the entanglement of hairs and the like is surely notified to the user, and the electric motor 36 for rotating the rotating brush 35 is driven. Damage can be reliably prevented.

  Further, the vibration of the rotating brush 35 caused by the contact between the long blade member 42 and the floor surface is transmitted to the case body 31 side through the shaft portion 41, so that the vibration detecting means 57 is connected to the shaft of the shaft portion 41. By arranging in the vicinity of the support position, the vibration of the floor brush 25 (case body 31) can be detected more reliably by the vibration detecting means 57. That is, since the shaft portion 41 is greatly shaken at the central portion in the axial direction as compared with both end portions that are pivotally supported by the case body 31, it is not easy to accurately detect the vibration. By disposing the shaft portion 41 in the vicinity of the end portion that is the shaft support position, vibration of the floor brush 25 (case body 31) caused by contact between the long blade member 42 and the floor surface can be detected with higher accuracy.

  And each blade member 42, 43, 44 has each straight part 42a, 42b, 43a, 43b, 44a, 44b along the axial direction of the shaft part 41, respectively, each blade member 42, When 43 and 44 come into contact with the floor surface, vertical vibrations can be reliably generated in the floor brush 25 (case body 31) by the straight portions 42a, 42b, 43a, 43b, 44a and 44b.

  In the first embodiment, the display unit 53 may notify the rotation abnormality of the rotating brush 35 by, for example, turning off the display.

  In addition to the display unit 53, any notification unit such as a voice generation unit that notifies the user by voice can be used as the notification unit.

  Next, a second embodiment will be described with reference to FIGS. In addition, about the structure and effect | action similar to said 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  In the second embodiment, instead of the display unit 53 of the first embodiment, as shown in FIG. 7, the rotation of the rotary brush 35 (electric motor 36) is stopped by stopping the electric motor 36, for example, This is to notify the user of low-speed rotation or lock caused by a high load.

  That is, the main body control unit 51 determines that the detected number of rotations of the rotating brush 35 is equal to or less than a predetermined number of rotations as shown in FIG. 8 instead of step 3 of the first embodiment. When this occurs, the rotation brush 35 (electric motor 36) is stopped by shutting off the input of the electric motor 36 via the control element C2, thereby informing the user of the rotation abnormality of the rotary brush 35 (electric motor 36) (step 5). ), Return to step 1.

  As described above, the main body control unit 51 notifies the rotation abnormality of the rotary brush 35 by stopping the electric motor 36, so that no notification means or the like is required separately, and the electric motor 36 (the rotary brush 35 ) Can reliably notify the user of the rotation abnormality of the rotary brush 35 and the motor 36 is stopped, so that a high load is applied to the rotary brush 35 (motor 36) or the rotary brush 35 (motor It is possible to prevent the electric motor 36 from being damaged more reliably by preventing the electric motor 36 from being input with the state 36) being locked.

  In addition, for example, in the case of abnormal rotation of the rotating brush, the current value of the motor increases and the temperature of the motor rises, so that the resistance value of the PTC thermistor is increased and the input of the motor is cut off. However, in the above-described embodiment, there is no element that varies when determining the rotation abnormality of the rotating brush 35, and the rotating brush is not able to be stopped due to variations in characteristics of the motor and the ambient temperature. When the rotation of 35 is abnormal, the electric motor 36 can be stopped reliably, and the reliability can be improved.

  Next, a third embodiment will be described with reference to FIG. In addition, about the structure and effect | action similar to said each embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  In the third embodiment, instead of the display unit 53 of the first embodiment, the rotation of the rotary brush 35 (electric motor 36) is stopped by stopping the electric motor 36 and reducing the input of the electric blower 18. For example, the user is notified of low-speed rotation or lock caused by a high load.

  That is, the main body control unit 51 determines that the detected number of rotations of the rotating brush 35 is equal to or less than a predetermined number of rotations as shown in FIG. 9 instead of step 3 of the first embodiment. In this case, the rotation brush 35 (electric motor 36) is stopped by shutting off the input of the electric motor 36 via the control element C2, thereby informing the user of the rotation abnormality of the rotary brush 35 (electric motor 36) (step 7). ), Return to step 1.

  Thus, by notifying the rotation abnormality of the rotating brush 35 by stopping the electric motor 36 and suppressing the input of the electric blower 18, no notification means or the like is required, and the electric motor 36 ( By stopping the rotating brush 35) and powering down the electric blower 18, the user can be more reliably notified of the rotation abnormality of the rotating brush 35.

  Next, a fourth embodiment will be described with reference to FIGS. In addition, about the structure and effect | action similar to said each embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  In the fourth embodiment, in the first embodiment, the electric vacuum cleaner 11 includes current detection means 61 that detects the current value of the electric motor 36.

  The current detection means 61 shown in FIG. 10 is disposed, for example, inside the case body 31 of the floor brush 25, and can output the detected current value to the signal reception unit 59 via the current signal output unit 62. .

  In the main body control unit 51, instead of step 1 in the first embodiment, the signal output unit 58 corresponds to the vertical vibration pattern of the case body 31 of the floor brush 25 detected by the vibration detection means 57. The change (electrical waveform) of the current value output via the signal is read via the signal receiver 59, and the straight portions 42a and 42b of the long blade member 42 are By detecting (estimating) the rotation speed of the rotary brush 35 by reading the corresponding peak value interval T1 when contacting the surface, the electric motor 36 output from the current detection means 61 via the current signal output unit 62. Is read via the signal receiver 59 (step 11), and the process proceeds to step 2.

  In step 2, when the main body control unit 51 determines that the detected rotation speed of the rotary brush 35 is equal to or less than a predetermined rotation number set in advance, the main body control unit 51 sets the detected current value in advance. It is determined whether or not the predetermined value is exceeded (step 12).

  In this step 12, when the main body control unit 51 determines that the detected current value exceeds a preset predetermined value, the process proceeds to step 3 and the detected current value exceeds the preset predetermined value. If the main body control unit 51 determines that it is not, the process returns to step 11.

  As described above, the rotational speed of the rotating brush 35 detected based on the vibration of the floor brush 25 (case body 31) detected by the vibration detecting means 57 is equal to or lower than the predetermined rotational speed, and the electric motor 36 detected by the current detecting means 61. When the current value exceeds the predetermined current value, the main body control unit 51 notifies the rotation abnormality of the rotary brush 35 by the display unit 53, so that the detection accuracy of the rotation number of the rotary brush 35 can be further improved. The rotation abnormality of the rotating brush 35 can be detected more reliably and notified to the user.

  Next, a fifth embodiment will be described with reference to FIGS. In addition, about the structure and effect | action similar to said each embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  In the fifth embodiment, instead of the display unit 53 of the fourth embodiment, as shown in FIG. 12, the rotation of the rotary brush 35 (electric motor 36) is stopped by stopping the electric motor 36, for example, This is to notify the user of low-speed rotation or lock caused by a high load.

  That is, the main body control unit 51 determines that the detected number of rotations of the rotating brush 35 is equal to or less than a predetermined number of rotations as shown in FIG. 13 instead of step 3 of the fourth embodiment. When this happens, the rotation brush 35 (electric motor 36) is stopped by shutting off the input of the electric motor 36 via the control element C2, thereby informing the user of the rotation abnormality of the rotary brush 35 (electric motor 36) (step 15). ).

  Thus, by notifying the rotation abnormality of the rotating brush 35 by stopping the electric motor 36, no notification means or the like is required, and the structure is simplified and the motor 36 (the rotating brush 35) is used by stopping. Can reliably notify the rotation abnormality of the rotating brush 35 and the motor 36 is stopped, so that a high load is applied to the rotating brush 35 (electric motor 36) or the rotating brush 35 (electric motor 36) remains locked. In this state, it is possible to prevent the electric motor 36 from being input and to prevent the electric motor 36 from being damaged more reliably.

  In addition, for example, in the case of a conventional configuration in which when the rotation of the rotating brush is abnormal, the current value of the motor increases and the temperature of the motor rises, thereby increasing the resistance value of the PTC thermistor and blocking the input of the motor. However, in the above embodiment, there are no elements that vary when determining the rotation abnormality of the rotating brush 35, because the electric motor may not be stopped due to variations in the characteristics of the PTC thermistor and the ambient temperature. When the rotation of the rotating brush 35 is abnormal, the electric motor 36 can be surely stopped and the reliability can be improved.

  Next, a sixth embodiment will be described with reference to FIG. In addition, about the structure and effect | action similar to said each embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  In the sixth embodiment, instead of the display unit 53 of the fourth embodiment, the rotation of the rotating brush 35 (electric motor 36) is stopped by stopping the electric motor 36 and reducing the input of the electric blower 18. For example, the user is notified of low-speed rotation or lock caused by a high load.

  That is, the main body control unit 51 determines that the detected number of rotations of the rotating brush 35 is equal to or less than a predetermined number of rotations as shown in FIG. 14 instead of step 3 of the fourth embodiment. When this occurs, the rotation brush 35 (electric motor 36) is stopped by shutting off the input of the electric motor 36 via the control element C2, thereby informing the user of the rotation abnormality of the rotary brush 35 (electric motor 36) (step 17). ).

  Thus, by notifying the rotation abnormality of the rotating brush 35 by stopping the electric motor 36 and suppressing the input of the electric blower 18, no notification means or the like is required, and the electric motor 36 ( By stopping the rotating brush 35) and powering down the electric blower 18, the user can be more reliably notified of the rotation abnormality of the rotating brush 35.

  In each of the above embodiments, the electric blower 18, the electric motor 36, the main body control unit 51, and the like are powered by a power source such as a secondary battery built in the cleaner main body 12 instead of the commercial AC power source e. But you can.

  Further, the cleaning member may be of only one type with the same amount of protrusion from the shaft portion 41, or may be two types or four or more types of protrusion amounts from the shaft portion 41 that are different from each other.

  Further, the cleaning member may have a linear portion on one end side, and the other portion may be a twisted portion.

  And as the vacuum cleaner 11, for example, an upright type in which the floor brush 25 is connected to the lower part of the vacuum cleaner body 12, or any handy type such as a handy type can be used. The configuration is not limited.

11 Vacuum cleaner
12 Vacuum cleaner body
18 Electric blower
25 Floor brush as suction port
31 Case body
34 Suction port
35 Rotating brush as rotating cleaning body
36 electric motor
41 Shaft as rotating body
42 Long blade member as a cleaning member
42a, 42b, 43a, 43b, 44a, 44b Straight section as a straight section
43 First short blade member as a cleaning member
44 Second short blade member as a cleaning member
51 Main unit controller as control means
57 Vibration detection means
61 Current detection means

Claims (5)

A vacuum cleaner body containing an electric blower,
A case body having a suction port, a rotating body rotatably attached to the case body, and a cleaning member projecting from the rotating body provided at least in part with a straight linear portion along the axial direction of the rotating body A rotary cleaning body, and an electric motor that rotationally drives the rotary cleaning body, the suction port body communicating the suction port to the suction side of the electric blower, and
Vibration detecting means for detecting the vibration of the suction port body;
Based on the vibration of the suction port detected by the vibration detecting means, the rotational speed of the rotary cleaning body is detected, and when the detected rotational speed is equal to or lower than a predetermined rotational speed, an abnormal rotation of the rotary cleaning body is notified. A vacuum cleaner characterized by comprising a control means. The electric vacuum cleaner according to claim 1, wherein the control means notifies the rotation abnormality of the rotary cleaning body by stopping the electric motor. The vacuum cleaner according to claim 2, wherein the control means notifies the rotation abnormality of the rotary cleaning body by stopping the electric motor and suppressing the input of the electric blower. Comprising current detection means for detecting the current value of the motor;
The control means is configured such that the rotational speed of the rotary cleaning body detected based on the vibration of the suction port detected by the vibration detection means is equal to or less than a predetermined rotational speed, and the current value of the electric motor detected by the current detection means is a predetermined value. The electric vacuum cleaner according to any one of claims 1 to 3, wherein an abnormal rotation of the rotary cleaning body is notified when the current value is exceeded. The electric vacuum cleaner according to any one of claims 1 to 4, wherein the vibration detecting means is disposed in the vicinity of the shaft support position of the rotating body.

Images