JP2010057530A - Suction tool for vacuum cleaner and vacuum cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a suction tool for a vacuum cleaner which is small-sized, light in weight and highly usable while securing dust collecting force. <P>SOLUTION: The suction tool for the vacuum cleaner includes an agitator storage chamber 4 to which an agitator 3 with a brush 2 provided on its outer periphery is freely rotatably attached, and an electric motor 25 and a pneumatic rotation means by suction air as drive sources for rotationally driving the agitator 3. The pneumatic rotation means formed from the brush 2, and the rotation number of the agitator 3 and/or the control balance of the two drive sources which are the electric motor 25 and the pneumatic rotation means are adjusted according to a dust collecting performance and a using mode. Since optimum two-drive-source control according to the using mode is performed while securing the small size, light weight and sufficient dust collecting force, the suction tool for the vacuum cleaner with high usability is provided. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a vacuum cleaner suction tool having an agitator and a vacuum cleaner using the same.

  In order to improve the dust collection performance with respect to the floor surface, as one of the problems related to the vacuum cleaner including the vacuum cleaner suction tool having an agitator, there is a balance for achieving both dust collection force and operability. The vacuum cleaner suction tool that directly rotates the agitator using the suction air as the driving source or rotates the agitator via the turbine can be reduced in weight, but if the suction air decreases due to clogging of dust, etc. This leads to a decrease and the dust collection power decreases. In addition, in the case where the agitator is driven by the electric motor, the rotational force is ensured, but the weight of the electric motor or the like makes it difficult to reduce the weight of the vacuum cleaner suction tool itself, resulting in poor operability.

  In order to solve this problem, there has been proposed a vacuum cleaner suction tool that uses a suction air as a drive source and also has a small electric motor so that the drive power of the agitator can be secured (for example, Patent Documents 1 to 3). reference).

  The suction tool for a vacuum cleaner described in the above-mentioned Patent Document 1 is configured such that a turbine and an electric motor are connected coaxially, the turbine is used when the air volume is large, and the agitator is rotated using the electric motor when the air volume is small. Moreover, like the vacuum cleaner suction tool described in Patent Document 2, there is one in which the electric motor is turned on and off at regular intervals, and the agitator is rotated by suction air during the off time.

Further, unlike the vacuum cleaner suction tool described in Patent Document 3, the agitator is not driven to rotate by suction air, but is driven by the electric motor only when the dust collecting force is reduced by detecting negative pressure. There is something that was made.
JP 60-58122 A Japanese Patent No. 3343979 JP-A-1-303118

  However, in the configuration of the conventional vacuum cleaner suction tool described in Patent Documents 1 to 3, the agitator is rotated by suction air and the agitator is rotated by an electric motor to ensure dust collection performance. An electric motor is used to supplement the rotational force due to the lack of wind, and the control balance of the two drive sources is uniquely determined. In recent years, when cleaning, there are more demands for various usage modes such as when you want to clean quickly and strongly due to the surrounding environment and the convenience of the user, or when you want to prioritize lowering the noise. Control that adjusts the control balance of the two drive sources while controlling the number of rotations according to the above has not been considered.

  The present invention provides a vacuum cleaner suction tool and a vacuum cleaner that are highly compact and lightweight, and that adjust the control balance of driving force by two driving sources according to the use mode while ensuring dust collection power. It is intended to provide.

  In order to solve the above-described conventional problems, the vacuum cleaner suction tool of the present invention includes an agitator storage chamber in which an agitator equipped with a brush is rotatably mounted, an electric motor as a drive source for rotationally driving the agitator, A wind power rotating means using suction wind, and the balance of the driving force of the two driving sources of the electric motor and the wind power rotating means is adjusted according to the mode of use. Since the two drive sources are optimally adjusted according to the use mode while securing the force, it is possible to provide a vacuum cleaner suction tool with high usability.

  Further, the vacuum cleaner suction tool of the present invention comprises an agitator storage chamber in which an agitator equipped with a brush is rotatably mounted, an electric motor as a drive source for rotationally driving the agitator, and wind power rotating means by suction air. An air inlet for taking in suction air for obtaining the rotational force of the wind power rotating means, a wind power control means for changing the area of the air inlet, and a rotational speed detecting means for detecting the rotational speed of the agitator. The motor and the wind power control means are controlled according to the mode and the rotational speed of the agitator, and the two drive sources are optimally adjusted according to the use mode and the state of the vacuum cleaner suction tool at that time. Therefore, a vacuum cleaner suction tool with high usability can be provided.

  Moreover, the vacuum cleaner of this invention was equipped with the suction tool for vacuum cleaners of any one of Claims 1-4, and the suction tool for vacuum cleaners is small and lightweight, and sufficient dust collection. Therefore, it is possible to provide a vacuum cleaner that is excellent in operability and usability.

  The suction tool for vacuum cleaner and vacuum cleaner of the present invention are compact and light and have sufficient usability to control two drive sources optimally according to the mode of use while ensuring sufficient dust collecting power. Is.

  The first invention comprises an agitator storage chamber in which an agitator equipped with a brush on its outer periphery is rotatably mounted, an electric motor as a drive source for rotationally driving the agitator, and a wind power rotating means by suction air, depending on the use mode The balance between the driving forces of the two driving sources of the electric motor and the wind power rotating means is adjusted so that the two driving devices are used in accordance with the use mode while ensuring a small and lightweight and sufficient dust collecting force. In order to adjust the source optimally, a vacuum cleaner suction tool with high usability can be provided.

  According to a second aspect of the present invention, there is provided an agitator storage chamber rotatably mounted with an agitator equipped with a brush on the outer periphery, an electric motor as a drive source for rotationally driving the agitator, wind power rotating means by suction air, and rotation of the wind power rotating means An air inflow port for taking in suction air to obtain a force, wind power control means for changing the area of the air inflow port, and a rotation speed detection means for detecting the rotation speed of the agitator, and a use mode and the rotation speed of the agitator Accordingly, the electric motor and the wind power control means are controlled, and the two driving sources are optimally controlled according to the use mode and the rotational speed of the agitator at that time. Can be provided.

  According to a third aspect of the present invention, in particular, in the vacuum cleaner suction tool of the first or second aspect, when the temperature or load state of the electric motor is detected and the electric motor is determined to be in an overload state, the electric motor The power supplied to the vehicle is limited or cut off, and the driving force by the wind power rotating means is increased, so there is no burden on the motor, so a smaller and less expensive motor can be adopted, and further weight reduction can be achieved. .

  In particular, the fourth invention includes an electric motor cooling port for taking in outside air for cooling the electric motor of the second or third invention, and an electric motor protection valve for opening and closing the electric motor cooling port, and the temperature of the electric motor is predetermined. When the value exceeds the value, the motor protection valve is opened, and the motor is not burdened. Therefore, a smaller and cheaper motor can be adopted and the weight can be reduced.

  A vacuum cleaner according to a fifth aspect of the present invention comprises the vacuum cleaner suction tool according to any one of claims 1 to 4, wherein the vacuum cleaner suction tool is small and light and has sufficient dust collection. Therefore, it is possible to provide a vacuum cleaner that is excellent in operability and usability.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The present invention is not limited to the embodiment.

(Embodiment 1)
A vacuum cleaner suction tool according to a first embodiment of the present invention will be described with reference to FIGS. 1 is a cross-sectional view of the vacuum cleaner suction tool according to the present embodiment, FIG. 2 is a top view of the vacuum cleaner suction tool, and FIG. 3 is an enlarged cross-sectional view of the vacuum cleaner suction tool. 4 is a system block diagram of the vacuum cleaner suction tool, FIG. 5 is a plan view of an agitator of the vacuum cleaner suction tool, and FIG. 6 is an electric cleaner using the vacuum cleaner suction tool. It is an overall view of the machine.

  In FIGS. 1-6, 1 is the vacuum cleaner suction tool (henceforth "suction tool 1") in this Embodiment, and the agitator 3 which arranged a plurality of strips of the brush 2 which scrapes up dust on the floor surface, The agitator storage chamber 4 is rotatably provided. The agitator storage chamber 4 is formed with a cross section having substantially the same diameter as the agitator 3, and a suction port 7 is provided at the bottom. 9 is a yuka nozzle pipe for connecting to the extension pipe 10, which communicates with the agitator storage chamber 4, and the dust sucked from the suction port 7 passes through the yuka nozzle pipe 9, and the extension pipe 10 and the hose 11. Then, it is sucked into the cleaner body 8. Reference numeral 13 denotes an operating means provided near one end of the hose 11.

  The yuka nozzle pipe 9 and the agitator storage chamber 4 are pivotably connected in the vertical direction, and 12 indicates the center of rotation (the specific configuration is the same as the existing configuration, and the description thereof is omitted). ). An air inflow port 14 for taking in suction air different from the suction port 7 is formed in the lower front portion of the agitator storage chamber 4, and air for rotating the agitator 3 is taken in.

  The opening area of the air inlet 14 is set so that about 30% of the suction air volume by the cleaner body 8 can be sucked on a flat floor surface, and even when the suction port 7 is blocked, it is 50 to 50- The pressure loss is suppressed so that 70% of the air volume is sucked. Two air inlets 14 are formed near the front center of the agitator storage chamber 4 so that the suction air strikes the vicinity of the center of the agitator 3. Reference numeral 16 denotes a traveling roller arranged at the front and rear, and the tip of the brush 2 of the agitator 3 protrudes about 1 mm from the bottom to maintain the distance from the floor surface.

  Reference numeral 17 denotes a projecting portion formed in front of the agitator storage chamber 4, which serves as a reinforcing material that receives an impact when it hits the wall, and has a roller 16 disposed in a freely rotating manner.

  An upper air inlet 18 that opens upward is formed on the upper surface of the protruding portion 17, and a front air inlet 19 that opens forward is formed on the front surface of the protruding portion 17. 14 is arranged in alignment with the position 14 and communicated with the air inlet 14.

  More specifically, the upper air intake 18 is positioned higher than the air inlet 14 and is formed in a direction substantially orthogonal to the air inlet 14. On the other hand, the front air intake 19 is located at a position facing the air inlet 14, and is opened in a direction substantially orthogonal to the upper air intake 18.

  A flat plate 20 is formed below the upper air intake 18, and the downstream side of the flat plate 20 reaches the air inlet 14 of the agitator storage chamber 4 and enters from the upper air intake 18 and the front air intake 19. The air is guided to the air inlet 14. A first shaft 5 and a second shaft 6 are provided at both ends of the agitator 3 and are covered with a first protective cylinder 21 and a second protective cylinder 22, respectively. A clutch 23 is used for the bearing component that receives the first shaft 5 of the agitator 3. Since the outer ring (not shown) of the clutch 23 is fixed to the large gear 24, the large gear 24 and the clutch 23 rotate in the same direction.

  Reference numeral 26 denotes a small gear attached to the electric motor 25, which meshes with the large gear 24. Each gear shaft (the rotation shaft 27 of the large gear 24 and the motor shaft 28 of the small gear 26) is attached to the attachment plate 29 with a predetermined axis. By being rotatably attached while maintaining the pitch, the rotational force of the electric motor 25 is amplified and transmitted to the clutch 23.

  The clutch 23 receives a signal from a control means (not shown) and sets the outer ring and the first shaft 5 to be connected / disconnected. When in the disconnected state, the first shaft 5 idles with respect to the outer ring. At the time of connection, the rotational force is transmitted to the agitator 3 when the electric motor 25 rotates.

  Reference numeral 30 denotes a motor chamber that covers the electric motor 25, and reference numeral 31 denotes a bearing body that covers the first protective cylinder 21 of the agitator 3, and when the heavy load is applied in the radial direction of the agitator 3 due to an impact or the like, the heavy load is concentrated on the clutch 23. This serves to receive the first protective cylinder 21 so as to prevent the dust 23 from entering the clutch 23.

  Reference numeral 32 denotes a detachable lid provided at the other end, and a resin bearing 33 that integrally holds the second shaft 6 of the agitator 3 is rotatably formed at the center, and the lid 32 is opened and closed. The agitator 3 can be attached and detached.

  Reference numeral 34 denotes wiring for supplying power to the electric motor 25 via the electric motor control means 42 and sending electric power and signals to the control target such as the clutch 23.

  Reference numeral 40 denotes a control means composed of a microcomputer or the like, which receives a signal from the operation means 13 and transmits a signal for driving the electric blower 41, and judges the result of the detection means (not shown) for control. decide. Reference numeral 42 denotes an electric motor control means for driving the electric motor 25, which can perform not only rotation but also braking control.

  Reference numeral 43 denotes an operation direction detection means for detecting the rotation direction of the roller 16. For example, an infrared sensor is used to output a two-phase signal synchronized with the rotation of the roller 16, and the two-phase signal is input. The rotation direction can be determined by the difference, and the actual rotation direction is determined by the control means 40 that receives the signal. It goes without saying that an encoder or a magnetic sensor other than the infrared sensor may be used.

  44 is a bed leaving detection means for detecting whether or not the suction tool 1 is in contact with a surface to be cleaned such as a floor surface. For example, the control means 40 includes a switch and transmits a signal to the control means 40. Can determine whether the suction tool 1 is in contact with the surface to be cleaned. Reference numeral 45 denotes a time measuring means that can be appropriately used by the control means 40 to make a judgment on control.

  46 is an air volume control valve that can adjust the area from the upper air inlet 18 and the front air inlet 19 to the air inlet 14 and is operated from the output of the wind power control means 47. Similarly, 50 is an electric motor protection valve that opens and closes an electric motor cooling port 51 provided in the motor chamber 30, and is operated by the output of the wind power control means 47. The wind force control means 47 receives the signal from the control means 40 and operates the air volume control valve 46 and the motor protection valve 50 with a motor, an actuator or the like.

  Reference numeral 48 denotes a rotational speed detection means for detecting the rotational speed of the agitator 3, which is composed of, for example, a Hall IC (not shown), etc., and sends a signal synchronized with the rotation of the agitator 3 to the control means 40. is there. Reference numeral 49 denotes an overload detection unit that can determine the overload state of the electric motor 25, and includes, for example, a temperature detection element arranged in the vicinity of the electric motor 25 and sends temperature information to the control unit 40. Needless to say, regarding the load state, the current flowing through the electric motor 25 may be detected and determined from the current value.

  Operation | movement of the suction tool 1 in this Embodiment comprised as mentioned above is demonstrated.

  When the user instructs the start of the operation of the vacuum cleaner via the operation means 13, the control means 40 operates the electric blower 41 and a suction force is generated. At this time, when the suction tool 1 is placed on a flat surface to be cleaned such as a wooden floor, air is sucked from the suction port 7 and the air inlet 14 by the suction force of the electric blower 41. About 70% of the suction air volume of the cleaner body 8 is sucked from the suction port 7, about 25% is sucked from the air inlet 14, and about 5% is sucked from the groove 15.

  Since the agitator 3 is in a free state with respect to the forward rotation, the agitator 3 rotates when the air sucked from the air inlet 14 is blown onto the brush 2 of the agitator 3. That is, in the present embodiment, the brush 2 serves as a wind power rotating means for rotating the agitator 3 with suction air. In addition, you may provide in the agitator 3 the turbine rotated with a suction wind separately from the brush 2 as a wind power rotation means.

  When the agitator 3 rotates, the floor surface dust is scraped off, and the floor dust is sucked together with the suction air from the suction port 7. At this time, the air entering the air inlet 14 becomes a diagonally downward airflow because the vertical airflow entering from the upper air inlet 18 and the horizontal airflow entering from the front air inlet 19 collide with each other. Enter chamber 4. Therefore, wind hits the outer diameter side of the agitator 3, and a high torque torque is exhibited.

  On the other hand, when cleaning a fuzzy surface to be cleaned such as a carpet, the amount of air sucked from the suction port 7 is reduced, and air exceeding 50% of the amount of air sucked from the cleaner body 8 is sucked from the front air inlet 14. Will be.

  Therefore, the force for rotating the agitator 3 by the suction air is doubled, and the brush 2 can be rotated even on a floor surface with a large load such as a carpet.

  Furthermore, the air that has entered from the air inlet 14 rotates the agitator 3, lifts up dust on the surface to be cleaned, and transports it to the Yuka nozzle pipe 9, so that it can be removed even if the air volume from the suction port 7 is halved. The performance will not drop.

  However, the contact resistance to the agitator 3 is increased in a carpet with a long bristle or a soft wiping mat made of a soft material whose surface to be cleaned is lifted by the suction force. Disappear.

  Accordingly, the control means 40 determines that the suction tool 1 is in contact with the floor surface based on the output of the bed leaving detection means 44 and that the user is operating based on the output of the operation direction detection means 43. When the rotational speed of the agitator 3 becomes smaller than a predetermined value by the detecting means 48, the motor 25 is activated via the motor control means 42 and the rotational force is transmitted to the agitator 3, so that the agitator 3, that is, the brush 2. Rotate to collect dust.

  When the agitator 3 rotates, the above-described air flow is formed, so that the rotational force due to the wind speed and the force to lift up the dust act, and it is possible to ensure excellent dust removal performance even when the driving force of the electric motor 25 is low. it can. At this time, in a state where the suction tool 1 is floating from the floor surface or a state where no operation is performed, there is no need to rotate the brush 2 for cleaning, and it is not necessary to drive the electric motor 25. In this case, the control means 40 does not operate the electric motor 25. As a result, wasteful power consumption can be suppressed.

  It is also conceivable to control the agitator 3 to be actively braked when leaving the floor. If something big is sucked, the brush 2 may continue to rotate with the suction air even if the suction tool 1 is removed from the floor. 2 can be stopped and can be easily removed without damaging the sticking.

  A means for adjusting the rotational speed of the agitator 3 by adjusting the suction air volume is also conceivable. Since the suction air volume varies depending not only on the type and state of the floor but also on the input to the electric blower 41 and the accumulation of dust, the rotational speed of the agitator 3 also changes.

  Therefore, the control means 40 receives the output of the rotational speed detection means 48 and transmits a signal to the wind power control means 47 so that the wind power control means 47 operates the air volume control valve 46 to obtain the rotational force of the agitator 3. Adjust the air volume. Thus, stable brush rotation can be performed without consuming electric power from the electric motor 25.

  Further, the control means 40 estimates the air volume from the air inlet 14 and the magnitude of the wind noise generated from it while judging the pressure in the suction tool 1 from the input of the electric blower 41 and the rotational speed of the agitator 3. If the sound volume can be lowered by driving the agitator 3 with the electric motor 25 based on the judgment setting determined by experiment, a signal is sent to the electric motor control means 42 and the wind power control means 47 to move the electric motor 25. Thus, it is possible to provide a vacuum cleaner that is easier for the user to use.

  Furthermore, the user prioritizes whether to change the priority of the loudness, the suction power, and the target of the dust collection capacity according to the use mode set by the operation means 13 and to further seek the dust collection performance. Thus, by changing the driving balance of the rotational force caused by the suction air and the rotational force caused by the electric motor 25, it is possible to provide a more convenient vacuum cleaner suitable for the convenience of the user.

  Further, when the motor 25 is in an overload state, for example, when the agitator 3 is in a low rotation state while being driven by the electric motor 25, the control means 40 is an overload detection means based on temperature. The overload state is judged by a signal from 49, the energization to the electric motor 25 is cut off or restricted, and the wind power control means 47 instructs to operate the driving force of the agitator 3 by the sucked air, thereby adding to the electric motor 25. The burden can be reduced.

  In addition, when the temperature of the electric motor 25 reaches a predetermined value or more, the control unit 40 drives the electric motor protection valve 50 via the wind power control unit 47, opens the electric motor cooling port 51, and actively activates the electric motor 25 with the outside air. By cooling the motor 25, the overload state of the electric motor 25 can be positively eliminated to further reduce the burden. By performing these processes, the electric motor 25 can adopt a cheaper and lighter electric motor, and can be further reduced in size and weight and can be improved in usability.

  In this way, dust is collected by utilizing the force of the air sucked in, and the rotation is assisted by the driving force of the electric motor 25 as necessary. Therefore, the electric motor 25 to be mounted has a lower rotational force than the conventional one and is longer. Since a small-life motor can be selected, the suction tool 1 itself can be reduced in size and weight, and control is performed in accordance with the operation of the suction tool 1 so that it has excellent operability and secures a dust collecting force. The user-friendly suction tool 1 can be provided.

  In the above embodiment, the brush 2 is provided on the outer periphery of the agitator 3 for dusting up, but a blade may be used.

  As described above, the vacuum cleaner suction tool and vacuum cleaner according to the present invention are extremely useful because they are small and light, and are easy to use and respond to user operations while ensuring dust collecting power. It can be applied to various electric vacuum cleaners for business use.

Sectional drawing of a structure of the vacuum cleaner suction tool in Embodiment 1 of this invention Top view of the vacuum cleaner suction tool Cross-sectional enlarged view of the vacuum cleaner suction tool System block diagram of the vacuum cleaner suction tool Top view of the agitator of the vacuum cleaner suction tool Overall view of the vacuum cleaner using the vacuum cleaner suction tool

Explanation of symbols

1 Vacuum cleaner suction tool (suction tool)
2 Brush (wind power rotating means)
DESCRIPTION OF SYMBOLS 3 Agitator 4 Agitator storage room 8 Vacuum cleaner main body 10 Extension pipe 11 Hose 14 Air inlet 16 Roller 18 Upper air inlet 19 Front air inlet 23 Clutch 25 Electric motor 40 Control means 47 Wind power control means 49 Overload detection means

Claims (5)

An agitator storage chamber in which an agitator equipped with a brush is rotatably mounted, an electric motor as a drive source for rotationally driving the agitator, and wind power rotating means by suction air, depending on the use mode, the electric motor and the A vacuum cleaner suction tool that adjusts the balance of the driving forces of the two driving sources of the wind power rotating means. An agitator storage chamber rotatably mounted with an agitator equipped with a brush on the outer periphery, an electric motor as a drive source for rotationally driving the agitator, wind power rotating means by suction wind, and suction for obtaining the rotational force of the wind power rotating means The electric motor includes an air inlet for taking in wind, wind power control means for changing the area of the air inlet, and a rotational speed detecting means for detecting the rotational speed of the agitator, and the electric motor according to the use mode and the rotational speed of the agitator And a vacuum cleaner suction tool for controlling the wind power control means. 3. When the temperature or load state of the motor is detected and it is determined that the motor is in an overload state, the power supplied to the motor is limited or cut off, and the driving force by the wind power rotating means is increased. The vacuum cleaner suction tool described in 1. An electric motor cooling port for taking in outside air for cooling the electric motor and an electric motor protection valve for opening and closing the electric motor cooling port are provided, and the electric motor protection valve is opened when the temperature of the electric motor becomes a predetermined value or more. Or the vacuum cleaner suction tool of 3. The vacuum cleaner provided with the suction tool for vacuum cleaners of any one of Claims 1-4.

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