JP2007313007A - Vacuum cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vacuum cleaner allowing the lighting of a lamp without turing on power. <P>SOLUTION: The lamp 27 is connected to a commercial AC power source through a triac Tr used for controlling a motor 85 and a snubber circuit 105 which is connected to the triac Tr in parallel. The lamp 27 is lighted by minute leakage current flowing through the snubber circuit 105 arranged in parallel with the triac Tr without supplying power to the motor 85 by the triac Tr by operating a setting button or the like. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a vacuum cleaner provided with a light source connected to a power source.

Conventionally, this type of vacuum cleaner includes a vacuum cleaner body that houses an electric blower. A hose body, an extension pipe, and a suction port body constituting a pipe portion communicating with the suction side of the electric blower are sequentially connected to the vacuum cleaner body. Here, the connection part with the extension pipe | tube which is a front-end | tip part of a hose body is provided with the hand operation part provided with several setting buttons which set the operation mode etc. of an electric blower. The extension tube is detachably attached with a lamp as a light source for illuminating the distal end side of the extension tube. This lamp is turned on and off together with the on / off operation of the electric blower by the operation of the setting switch of the hand operation unit, receives power from the commercial AC power source for the electric blower power source, and illuminates the distal end side of the pipe part, for example, It is possible to improve workability when removing a brush from a pipe part and cleaning a dark part such as a gap (see, for example, Patent Document 1).
Japanese Utility Model Publication No. 2-1066 (page 4-5, FIG. 1)

  However, since the operation of the light source is linked to the operation of the electric blower, the above-described electric vacuum cleaner has a problem that the lamp cannot be turned on unless the electric blower is operated.

  This invention is made | formed in view of such a point, and it aims at providing the vacuum cleaner which can light a light source, without turning on a power supply.

  The present invention comprises a suction means that includes a drive means and is connected to the suction side of an electric blower, a control element that controls the operation of the drive means, a snubber circuit that is connected in parallel to the control element, and a suction When the grounding of the suction mouth is detected with the mouth connected to the cleaner body, a safety device that electrically connects the driving means to the power source via the control element, the control element and the snubber circuit A light source that can be lit by the current flowing through the snubber circuit and that goes off when the safety device detects grounding of the suction port with the suction port connected to the vacuum cleaner body Are provided.

  According to the present invention, the safety device is connected to the power source via the control element for controlling the operation of the driving means and the snubber circuit connected in parallel to the control element, so that the safety device When the ground is not detected, the light source can be turned on by a current flowing through a snubber circuit parallel to the control element without supplying power to the driving means by the control element.

  Hereinafter, the configuration of a vacuum cleaner according to an embodiment of the present invention will be described with reference to the drawings.

  In FIG. 2, reference numeral 1 denotes a vacuum cleaner main body. The vacuum cleaner main body 1 separates dust sucked together with a suction air generated by driving an electric blower 2 accommodated in a dust collecting cup 3 as a dust collector. The vacuum cleaner collects dust and can travel on the floor as a surface to be cleaned.

  Further, the cleaner body 1 can open and close by opening a main body case 4 housing the electric blower 2 and an opening 5 communicating with an upper portion of a dust collection chamber (not shown) formed on the front side of the main body case 4. And a main body lid 6 to be provided.

  A main body suction port 7 that communicates with the dust collection chamber and sucks air from the outside is opened at the front portion of the cleaner body 1. An elongated substantially cylindrical hose body 8 that is flexible and can be bent is connected to the main body suction port 7. At the tip of the hose body 8, a hand operation unit 9 that can select the operation mode of the electric blower 2 is provided. The hand operating section 9 is provided with a hand gripping section 10 that is held by an operator, and the hand gripping section 10 is provided with a plurality of setting buttons 11 for setting the electric blower 2 and the like to a plurality of operation modes. ing.

  In addition, an extensible and elongated cylindrical extension tube 12 is detachably connected to the distal end of the hand operation unit 9. The hose body 8 and the extension pipe 12 constitute a pipe portion P that is connected to the suction side of the electric blower 2.

  Furthermore, the extension brush 12 is detachably connected to, for example, a floor brush 13 that is placed on, for example, a carpet on the floor surface of a room and sucks in dust on the carpet. . Accordingly, the floor brush 13 is connected to the suction side of the electric blower 2 through the pipe portion P and the like.

  Further, a power cord 14 that can be fed from an external commercial AC power source to the electric blower 2 or the like is housed in the vacuum cleaner body 1 so that it can be pulled out.

  For example, the dust collection cup 3 separates and accommodates dust sucked together with air into coarse dust and fine dust by linear inertia.

  The extension tube 12 includes a pair of extension tube bodies 16 and 17 that can be expanded and contracted, and an auxiliary cleaning body 18 that is an illumination unit that is detachably provided at the distal end of the extension tube body 16.

  On the distal end side of the extension pipe main body 16, a stand stopper 19 as a locking portion is provided. As shown in FIG. 4, the stand stopper 19 stands up with the front side of the vacuum cleaner main body 1 and is locked by a locking recess 20 provided at the bottom of the main body case 4. The machine is in the storage state, that is, the stand storage state shown in FIG.

  Further, as shown in FIG. 5, the auxiliary cleaning body 18 protrudes from the substantially cylindrical auxiliary cleaning body 21 having a diameter larger than that of the extension pipe main body 16 and a proximal end portion of the auxiliary cleaning body 21. The connecting pipe portion 22 and an auxiliary brush 23 as a cleaning body swingably and detachably provided on the distal end side of the auxiliary cleaning body main body 21 are provided.

  The auxiliary cleaning body main body 21 includes a cylindrical main body portion 25 communicating with the connection pipe portion 22, and a cover body 26 detachably provided on the upper portion of the main body portion 25. Inside the cover body 26, A lamp 27 as a light source is accommodated.

  The cover body 26 includes a cover main body 54 located on the main body portion 25 side, and a protruding portion 55 that protrudes above the cover main body 54 and accommodates the lamp 27.

  The cover main body 54 divides a housing portion (not shown) between the upper portion of the main body portion 25, and the housing portion is electrically connected to a terminal 59 projecting from the base end portion of the cover main body 54. A circuit portion (not shown) that is connected and electrically connects the vacuum cleaner main body 1 side and the floor brush 13 via the terminal 59 is accommodated.

  The protrusion 55 is formed in a dome shape at the upper part of the cover body 54, and the lamp housing portion as a light source housing portion for housing the lamp 27 and a circuit board (not shown) on which the lamp 27 is mounted between the projection body 55 and the cover body 54. It is to divide 61. Further, as shown in FIG. 2, a flat surface portion 62 that faces the floor brush 13 is formed at the tip of the protruding portion 55, and the flat surface portion 62 has a window-like shape through which illumination from the lamp 27 is transmitted. The light transmission part 63 is formed with an opening.

  As shown in FIG. 5, a connection suction port 65 that can be used with the floor brush 13 removed is formed at the distal end portion of the cover body 26 and the main body portion 25, that is, the distal end portion of the pipe portion P. ing.

  Further, the lamp 27 illuminates the front end side, for example, when cleaning the floor surface of a narrow gap at the connection suction port 65 or when cleaning a high position, for example, an LED, and a light transmitting portion It is accommodated in the lamp accommodating part 61 with the illumination direction directed to the 63 side.

  On the other hand, the connecting pipe portion 22 is provided with a diameter smaller than that of the auxiliary cleaning body 21 and can be locked in a state where the connecting pipe portion 22 is inserted into the distal end portion of the extension pipe main body 16 and is located near the distal end portion of the extension pipe main body 16. This locking can be released by operating a release button 66 provided.

  Further, the auxiliary brush 23 includes an annular holding frame 67 that is pivotally supported on both sides of the distal end portion of the auxiliary cleaning body 21 and is located around the connection suction port 65. The holding frame 67 includes a soft synthetic resin or the like. The brush bristle portion 68 formed in is planted.

  As shown in FIGS. 2 and 6, the floor brush 13 includes a horizontally long case body 71 as a suction port body, and a communication pipe 72 projecting from the rear center of the case body 71.

  The case body 71 includes a lower case 74 whose upper side is open, an upper case 75 that is attached to the lower case 74 by closing the upper side of the lower case 74, and a bumper that is sandwiched between the lower case 74 and the upper case 75. 76.

  The lower case 74 is formed with an elongated rectangular suction port 81 that communicates with the suction side of the communication pipe 72 from the lower surface facing the floor surface to the front surface. Further, a lower case projecting portion 82 projecting rearward is provided at the center of the rear portion of the lower case 74 in the left-right direction. Further, an opening 83 is formed at one side of the lower case 74 behind the suction port 81.

  In the suction port 81, a rotary brush 84 as an elongated substantially cylindrical rotary cleaning body is rotatably disposed.

  The rotating brush 84 is rotated by a motor 85 as a driving means disposed in the case body 71. The rotating brush 84 is attached to both ends of the elongated cylindrical shaft portion 86 serving as a rotation axis. And a scraping portion 88 as a cleaning member that is helically attached to the entire outer peripheral surface between the bearings 87 and 87 of the shaft portion 86.

  One of the bearings 87 and 87 is pivotally supported by the lower case 74 at one side of the suction port 81, and the other is connected to the rotating shaft of the motor 85 via a belt or the like.

  The scraping portion 88 is, for example, a spiral blade or brush hair, and when the suction port 81 is opposed to the floor surface, the lower end portion comes into contact with the floor surface, and dust attached to the floor surface is removed. It is scraped off by the rotation of the rotating brush 84.

  The lower case protrusion 82 protrudes substantially horizontally and is positioned below the communication pipe 72.

  The opening 83 is formed in a rectangular shape that is long in the front-rear direction, and a safety device 95 is provided in the opening 83 as contact detection means for detecting the installation state of the floor brush 13. The safety device 95 includes a normally-open switch 96 and a rotating roller 97 that turns the switch 96 on and off by contacting and leaving the floor surface.

  The switch 96 is a control means (not shown) on the cleaner body 1 side that turns on and off the driving of the motor 85 by the setting operation of the setting button 11, the terminal 59 (FIG. 5), and the extension pipe 12 and the hose body 8. It is electrically connected via an electric wire (not shown) provided.

  The rotating roller 97 is urged so that the lower part protrudes from the lower surface of the lower case 74 by a torsion spring or the like (not shown), and retreats into the opening 83 against the urging while the floor brush 13 is grounded. When the switch 96 is turned on, the motor 85 can be driven, and the floor brush 13 protrudes from the opening 83 in a state of being separated from the floor surface, so that the switch 96 is turned off and the motor 85 is driven. In addition, when the floor brush 13 is turned upside down, it is fixed in a protruding state from the opening 83 by a stopper (not shown), and the switch 96 is kept off.

  The upper case 75 is airtightly attached to the lower case 74, and a front cover 101 as an opening / closing body that covers the front side of the suction port 81 is rotatably attached to the front portion. Further, an upper case protruding portion 102 protruding rearward is provided at the center of the rear portion of the upper case 75 in the left-right direction.

  The front cover 101 has an upper end pivotally supported by the upper case 75, is curved in a convex arc shape toward the front side, and a lower end extends to the vicinity of the lower end of the lower case 74.

  The upper case protrusion 102 pivotally supports the communication pipe 72 between the lower case protrusion 82 and the upper case protrusion 82.

  Furthermore, the bumper 76 is formed of a member such as a synthetic resin having flexibility such as rubber or elastomer, and is provided on both sides of the floor brush 13.

  The communication pipe 72 is inserted from the connection suction port 65 and connected to the pipe portion P. The communication pipe 72 is provided with a detachable button 103 that allows the floor brush 13 to be detachably attached to the auxiliary cleaning body 18.

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

  The power cord 14 is connected to a commercial AC power source (not shown) and supplies power from the commercial AC power source to various circuits.

  Between the two lines of the power cord 14, a triac Tr that is a bidirectional thyristor as a control element for controlling the operation of the motor 85 and a snubber circuit 105 that is a protection circuit for surge protection of the triac Tr are arranged in parallel. A circuit is provided, and a light source unit 107 connected to a commercial AC power supply by the parallel circuit is provided in parallel with the parallel path. A motor 85 of the floor brush 13 is detachably provided between the two wires of the power cord 14 via connection terminals 108, 108. A safety device 95 is provided between the motor 85 and the connection terminal 108. The switch 96 is disposed.

  The snubber circuit 105 is a series circuit of a capacitor C and a resistor R1.

  The light source unit 107 is provided with a diode bridge DB for rectification, and the lamp 27 is electrically connected to the diode bridge DB via a resistor R2. The cathode side of the lamp 27 is grounded. The lamp 27 of the light source unit 107 has a sufficiently small load with respect to the motor 85.

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

  When the power cord 14 is connected to a commercial AC power source, a minute leakage current of about 20 mA flows through the snubber circuit 105, for example.

  At this time, when the vacuum cleaner is in the stand storage state shown in FIG. 3, the rotating roller 97 of the safety device 95 is grounded and is pushed into the opening 83. By being turned on, the motor 85 is connected in parallel to the light source unit 107, leakage current via the snubber circuit 105 hardly flows to the light source unit 107, and the lamp 27 is turned off.

  On the other hand, as shown in FIG. 4, when the stand stopper 19 is removed from the locking recess 20 of the main body case 4 to release the stand, the rotating roller 97 is restored by the urging force of the torsion spring and the lower case 74 of the floor brush 13 is returned. When the switch 96 is turned off, the motor 85 side is disconnected from the light source unit 107 side, and all the leakage current via the snubber circuit 105 flows to the light source unit 107, so that the lamp 27 of the light source unit 107 Lights up.

  When cleaning, first, the main body lid 6 of the vacuum cleaner main body 1 is opened to expose the dust collection chamber, the dust cup 3 is attached to the dust collection chamber from the opening 5, and then the main body lid 6 is closed. .

  Next, the hand grip 10 is gripped and a predetermined setting button 11 is pressed to drive the electric blower 2 in a predetermined operation mode.

  Then, the operator grounds the floor brush 13 on the floor surface, travels back and forth on the floor surface, and sucks dust on the floor surface together with air from the tip of the floor brush 13.

  At this time, by operating the setting button 11, a signal is input to the gate of the triac Tr to turn on the triac Tr, thereby supplying electric power from the commercial AC power source to the motor 85, and the rotating brush 84 via the motor 85. , The dust on the floor surface is scraped out by the scraping portion 88. At the same time, a current flowing through the triac Tr is supplied to the light source unit 107, and the lamp 27 is turned on.

  Furthermore, when cleaning high floors such as narrow and dark floors such as gaps, or air blowers of air conditioners installed on walls, the floor brush 13 is removed from the pipe P by operating the detachable button 103. Then, dust is sucked from the connection suction port 65 using the auxiliary brush 23.

  At this time, since the motor 85 side is disconnected from the light source unit 107 side, all the leakage current flowing through the snubber circuit 105 flows to the light source unit 107, so that the lamp 27 of the light source unit 107 is lit and the connection suction port 65 is opposed. Illuminate a dark floor.

  The sucked air becomes suction air, flows into the dust collection chamber through the floor brush 13, the extension pipe 12, the hose body 8 and the main body suction port 7, and is sucked into the dust collection cup 3 to generate coarse dust. Fine dust is separated and sucked into the electric blower 2, passes through the electric blower 2 to become exhaust air, and is exhausted from the exhaust port (not shown) to the outside of the cleaner body 1.

  As described above, according to the above-described embodiment, the lamp 27 is turned into a commercial AC power supply via the triac Tr that controls the operation of the motor 85 and the snubber circuit 105 connected in parallel to the triac Tr. By connecting, the triac Tr is turned off by a small leakage current flowing through the snubber circuit 105 in parallel to the triac Tr without supplying power to the motor 85 by the operation of the setting button 11 or the like, that is, The lamp 27 can be lit even when the floor brush 13 is not grounded or when the floor brush 13 is removed from the pipe portion P.

  Further, in a state where the triac Tr is turned on, the lamp 27 can be turned on by a current flowing through the triac Tr.

  In other words, if the power cord 14 is connected to a commercial AC power source, the lamp 27 is always lit when the triac Tr is on, and also depends on whether the motor 85 is operating or not operating even when the triac Tr is off. If the switch 96 of the safety device 95 is turned off, the lamp 27 can be always in an operating state.

  In particular, since the lamp 27 is an LED with low current consumption, it can be sufficiently lit even with a small leakage current via the snubber circuit 105.

  If the floor brush 13 is not grounded or removed from the pipe portion P, the lamp 27 is lit simply by plugging the power cord 14 into the commercial AC power source, so that the appearance can be improved.

  In addition, the lamp 27 can illuminate the surface to be cleaned which is difficult for the operator to see, such as a dark floor surface such as a gap or an air-conditioning air blower, by illuminating the surface to be cleaned opposed to the connection suction port 65. Cleanability is improved.

  Further, since the lamp 27 is lit by a commercial AC power source, for example, compared with a case where a battery or the like is built in and lit, there is no need to replace the battery, and the weight of the tube portion P can be reduced. It is possible to improve workability when cleaning a high position.

  In the above embodiment, the details of the auxiliary cleaning body 18 and the like are not limited to the above configuration.

  In addition, the vacuum cleaner is not limited to the canister type, and for example, the floor brush 13 can be used correspondingly even if it is an upright type or a handy type formed directly on the lower surface of the vacuum cleaner body 1, Furthermore, it can also be applied to paper pack type vacuum cleaners.

It is a block diagram which shows the vacuum cleaner of one embodiment of this invention. It is a perspective view which shows a vacuum cleaner same as the above. It is a perspective view which shows the stand accommodation state of a vacuum cleaner same as the above. It is an explanatory side view which shows a part of the stand accommodation state of the vacuum cleaner same as the above, and its cancellation | release state. It is a side view which notches a part of light source vicinity of a vacuum cleaner same as the above, and shows it. It is a top view which shows the suction inlet body of a vacuum cleaner same as the above.

Explanation of symbols

1 Vacuum cleaner body 2 Electric blower
13 Floor brush as suction port
27 Lamp as light source
65 Connection inlet
85 Motor as drive means
95 Safety device
105 Snubber circuit
Triac as Tr control element

Claims (2)

A vacuum cleaner body containing an electric blower,
A suction port body provided with driving means, connected to the suction side of the electric blower;
A control element for controlling the operation of the driving means;
A snubber circuit connected in parallel to the control element;
The grounding state of the suction port body is detected, and when the grounding of the suction port body is detected in a state where the suction port body is connected to the cleaner body, the driving means is powered via the control element. A safety device electrically connected to the
The safety device is connected to a power source through the control element and the snubber circuit, can be turned on by a current flowing through the snubber circuit, and the safety device is in a state where the suction port is connected to the cleaner body. A vacuum cleaner comprising: a light source that turns off when grounding of the suction port is detected. The exhaust side of the suction port body is detachably connectable, and has a connection suction port that can face the surface to be cleaned with the suction port body removed,
The vacuum cleaner according to claim 1, wherein the light source illuminates a surface to be cleaned facing the connection suction port.

Images