JP4010771B2 - Electric vacuum cleaner - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electric vacuum cleaner having a suction port body which temporarily stores scraped dust.
[0002]
[Prior art]
Conventionally, a vacuum cleaner has an extension pipe connected to the tip of the dust collection hose connected to the vacuum cleaner body, and a suction port connected to the tip of the extension pipe, and is provided on the tip side of the dust collection hose. By holding the handle part by hand, the suction port body is moved back and forth and left and right for cleaning.
[0003]
[Problems to be solved by the invention]
By the way, in such a conventional vacuum cleaner, there existed a problem that the dust collection hose would hang in a handle part, and the operation load of the handle part will become large. Moreover, in order to move the suction port more than a predetermined distance, the cleaner body has to be moved, which is very troublesome. Moreover, since the cord is connected to the main body of the vacuum cleaner, there are many problems such as the cord interfering with the cleaning.
[0004]
The present invention has been made in view of the above circumstances, and an object of the present invention is to reduce the load of movement of the suction port body and to move the cleaner body regardless of the movement distance of the suction port body. The object is to provide a vacuum cleaner without any.
[0005]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the invention of claim 1 is directed to a suction port body having a suction case in which an opening for taking in dust is formed on the lower surface, a dust collecting chamber in which dust is collected, and sucking dust into the dust collecting chamber. An electric blower for making the inside of the dust collection chamber have a negative pressure is provided, and a vacuum cleaner main body provided with a holding part for detachably holding the suction port body, and in the suction case, Dust scraping means arranged facing the opening, scraping out dust on the surface to be cleaned and taking the dust into the suction case from the opening, a storage chamber for storing the dust taken into the suction case, There is provided a connection port for sucking the dust stored in the accumulation chamber into the dust collection chamber of the cleaner body by a negative pressure suction force by the operation of the electric blower, The suction port A suction hole is provided that is connected to the connection port of the suction port body in a state of being held by a holding portion, and that allows the accumulation chamber and the dust collection chamber of the suction port body to communicate with each other. not closed by the suction port body is formed in the holding portion in a state of being held by the holding portion recess, characterized in that it the outside air communication through said recess.
[0006]
According to a second aspect of the present invention, in the first aspect of the invention, the suction port body includes a motor that operates the dust scraping means and a rechargeable battery that drives the motor, and the suction port body holds the motor. The vacuum cleaner main body is provided with a charging circuit for charging the rechargeable battery when held by the unit .
[0007]
According to a third aspect of the present invention, in the invention according to the second aspect, when the suction port body is held by a holding portion, the electric blower is driven to suck dust in a storage chamber of the suction port body. And
[0008]
According to a fourth aspect of the present invention, in the invention according to the second or third aspect, the suction port body includes a shutter that opens and closes the connection port, and the shutter is opened when the suction port body is held by the holding portion. It is characterized by doing.
[0010]
[Embodiment]
Hereinafter, an embodiment of a vacuum cleaner according to the present invention will be described with reference to the drawings.
[0011]
1 to 3, reference numeral 10 denotes a vacuum cleaner, and the vacuum cleaner 10 is placed (held) on a cleaner body 11 and a mounting portion (holding portion) 12 of the cleaner body 11. A suction port body 30 is provided.
[0012]
The vacuum cleaner main body 11 has a main body case 13 formed in a casing shape. A control chamber S is formed at the bottom of the main body case 13, and a dust collection chamber 14 is formed on the control chamber S from the front. And an electric chamber 15 are formed. A dust collection filter 16 is detachably mounted in the dust collection chamber 14, and an electric blower 17 that makes the dust collection chamber 14 have a negative pressure is provided in the electric chamber 15. Reference numeral 18 denotes a cord reel.
[0013]
A lid case 19 is attached to the front upper portion of the main body case 13 so as to be openable and closable, and the dust collection filter 16 can be replaced by opening the lid case 19. Further, as shown in FIG. 4, a suction hole 20 communicating with the dust collecting chamber 14 is formed on the lower side of the front wall 13 </ b> A of the main body case 13. A protrusion 21 and a protrusion 21 are formed on the suction hole 20. A locking member 22 is provided on the top. The locking member 22 engages with an operation pipe 31 of a suction port body 30 to be described later and holds the operation pipe 31. An exhaust hole H for exhausting air discharged from the electric blower 17 is formed in the rear wall portion 13B of the main body case 13.
[0014]
Further, a mounting portion 12 that protrudes forward is formed below the suction hole 20 of the front wall 13 </ b> A of the main body case 13.
[0015]
A recess 23 having a predetermined width is formed on the upper surface 12A of the mounting portion 12 and extends rearward from the front end. A cylindrical terminal is formed on one side of the rear portion of the upper surface 12 as shown in FIG. Bosses 24A and 24B are formed, and terminal plates 25A and 25B are provided in the terminal bosses 24A and 24B. The terminal boards 25A and 25B are connected to a charging circuit 50 (see FIG. 11) described later.
[0016]
As shown in FIGS. 2 and 3, the suction port body 30 has a suction case (suction port body) 33 having an opening 32 formed on the bottom surface, and an operation pipe 31 is attached to the upper portion of the suction case 33. It has been. The operation pipe 31 can be tilted in the front-rear direction with the lower portion as a fulcrum. A handle portion 31A is formed at the upper end of the operation pipe 31, and a switch 34 of a motor 37 described later is provided on the handle portion 31A. Is provided.
[0017]
In the suction case 33, a rotary cleaning body 35 is rotatably provided so as to face the opening 32. The rotary cleaning body 35 has a plurality of blades 35B extending radially from the shaft portion 35A. When the rotary cleaning body 35 rotates clockwise (in FIG. 2), the blade 35B removes dust on the floor surface. It is scraped out and taken into the suction case 33.
[0018]
Further, as shown in FIG. 3, an accumulation chamber 36 for accumulating dust taken into the case 33 is formed at a rear position of the rotary cleaning body 35 in the suction case 33. A motor 37 is provided on one side. A belt 40 is wound around a drive pulley 38 provided on the drive shaft 37a of the motor 37 and a driven pulley 39 provided at one end of the rotary cleaning body 35. The rotary cleaning body 35 is rotated clockwise by driving the motor 37 (FIG. 2). )).
[0019]
Further, a rechargeable battery 41 for the motor 37 is installed on the other end side of the storage chamber 36, and protrudes upward on the upper surface of the bottom wall 33A of the suction case 33 adjacent to the rechargeable battery 41 as shown in FIG. Cylindrical fitting bosses 42A and 42B are formed. The lower surface of the bottom wall 33A, which is the lower end surface of the fitting bosses 42A, 42B, is open, the upper surface is closed, and the connection pins 43A, 43B are attached. The connection pins 43A, 43B are fitted from the upper surface. It protrudes into the bosses 42A and 42B. The connection pins 43A and 43B are connected to the anode and cathode of the rechargeable battery 41.
[0020]
The inner diameters of the fitting bosses 42A and 42B are set to be substantially the same as the outer diameters of the terminal bosses 24A and 24B of the mounting portion 12, and the suction port body 30 is mounted on the mounting portion 12 as shown in FIGS. When placed, the terminal bosses 24A and 24B are fitted into the fitting bosses 42A and 42B. When the terminal bosses 24A and 24B are fitted into the fitting bosses 42A and 42B, the connection pins 43A and 43B and the terminal plates 25A and 25B are connected as shown in FIG. 7, and the rechargeable battery 41 is charged by the charging circuit 50. It has become so.
[0021]
As shown in FIGS. 8 and 9, a connection port 45 is formed in the rear wall 33 </ b> B of the suction case 33, and a shutter 46 is attached to the connection port 45 so as to be movable up and down. A concave portion 46 </ b> A that engages with the protrusion 21 of the main body case 13 is formed on the upper portion of the shutter 46, and a protrusion 47 that extends in the vertical direction is formed on both sides of the shutter 46.
[0022]
On the other hand, guide recesses 45A extending in the vertical direction are formed on both sides of the connection port 45, and the protrusions 47 of the shutter 46 are engaged with the guide recesses 45B, so that the shutter 46 extends along the guide recesses 45B. Can be moved up and down. When the shutter 46 is moved upward, the connection port 45 is opened (see FIG. 10), and when the shutter 46 is moved downward (when in the position shown in FIG. 8), the connection port 45 is closed.
[0023]
Further, as shown in FIG. 8, the protrusion 21 of the main body case 13 is engaged with the recess 46A of the shutter 46, and the suction port body 30 is moved downward as shown in FIG. The shutter 46 moves upward relative to the suction case 33 so that the connection port 45 is opened (opened) and connected to the suction hole 20 of the main body case 13. Further, when the suction port body 30 is placed on the placement portion 12, the opening 32 of the suction case 33 is not blocked by the recess 23 of the placement portion 12, and the opening 32 communicates with the outside air via the recess 23. It is supposed to be.
[0024]
FIG. 11 is a block diagram showing the configuration of the control system of the vacuum cleaner. In FIG. 11, 50 is a charging circuit that charges the rechargeable battery 41, and 51 is a control device that controls the electric blower 17 and the charging circuit 50 based on the charging current charged in the rechargeable battery 41. The control device 51 is composed of a CPU or the like, and obtains a charging current from a voltage generated across the resistor R.
[0025]
Next, operation | movement of the vacuum cleaner comprised as mentioned above is demonstrated.
[0026]
When cleaning is performed, first, the suction port body 30 is removed from the mounting portion 12 by holding the handle portion 31 </ b> A of the operation pipe 31 by hand. When the suction port body 30 is removed from the mounting portion 12, the fitting bosses 42 </ b> A and 42 </ b> B of the suction port body 30 are removed from the terminal bosses 24 </ b> A and 24 </ b> B of the mounting portion 12 and the main body case 13 from the recess 46 </ b> A of the shutter 46. The projections 21 are removed, the shutter 46 is moved downward by its own weight, and the connection port 45 is closed.
[0027]
Then, the switch 34 of the handle portion 31A is turned on to drive the motor 37, and by driving the motor 37, the rotary cleaning body 35 rotates clockwise as shown in FIG. The suction port body 30 is moved back and forth on the surface to be cleaned by operating the handle portion 31A of the operation pipe 31 by hand.
[0028]
The rotation of the rotary cleaning body 35 causes the blade 35B to scrape dust on the surface to be cleaned, and the blade 35B takes the dust thus scraped into the suction case 33 through the opening 32 of the suction case 33. The dust taken into the suction case 33 is stored in the storage chamber 36.
[0029]
Since the rotation direction of the rotary cleaning body 35 rotates in the reverse direction with respect to the forward movement of the suction port body 30, the dust scraping effect is improved, and the dust taken into the suction case 33 by the blade 35. Is rotated backward through the upper side of the rotary cleaning body 35 as shown by the arrow U1 in FIG. 12, and is efficiently stored in the storage chamber 36 at the rear side by the clockwise rotation of the rotary cleaning body 35. Go.
[0030]
When the dust is accumulated to some extent in the accumulation chamber 36, as shown in FIG. 8, the protrusion 21 of the main body case 13 is engaged with the recess 46A of the shutter 46, and the suction port body 30 is moved downward to mount the main body case 13. Place it on the placement unit 12. Then, the shutter 46 moves relatively upward to open the connection port 45, and the connection port 45 is connected to the suction hole 20 of the main body case 13. Further, the terminal bosses 24A, 24B of the mounting portion 12 are fitted into the fitting bosses 42A, 42B, and the connection pins 43A, 43B and the terminal plates 25A, 25B are connected as shown in FIG.
[0031]
When the connection pins 43A, 43B and the terminal plates 25A, 25B are connected, a charging current flows from the charging circuit 50 to the rechargeable battery 41, whereby the suction port 30 is placed on the placement portion 12 in the control device 51. The electric blower 17 is driven based on the judgment. As the electric blower 17 is driven, the dust collection chamber 14 has a negative pressure, and the opening 32 of the suction case 33 communicates with the outside air through the recess 23 of the mounting portion 12, so that the air in the suction case 33 is accumulated in the accumulation chamber. The dust 36 is sucked into the dust collecting chamber 14 through the connection port 45 of the suction case 33 and the suction hole 20 of the main body case 13 together with the dust 36, and the dust is collected in the dust collecting filter 16.
[0032]
When the electric blower 17 is driven for a certain time, the control device 51 stops the drive of the electric blower 17. While the electric blower 17 is being driven, outside air is sucked from the opening 32 of the suction case 33 as shown by an arrow in FIG. 2, and this outside air passes through the accumulation chamber 36 and the connection port 45 and the main body case of the suction case 33. Since the dust is sucked into the dust collection chamber 14 through the thirteen suction holes 20, the dust accumulated in the accumulation chamber 36 can be reliably sucked into the dust collection chamber 14.
[0033]
When the dust in the accumulation chamber 36 is sucked into the dust collection chamber 14 of the main body case 13, the suction port body 30 is removed from the mounting portion 12 and cleaning is performed in the same manner as described above, and the accumulation chamber 36 of the suction port body 30 is cleaned. If dust is accumulated to a certain extent, if the suction port body 30 is placed on the mounting portion 12 of the cleaner body 11 in the same manner as described above, the dust in the accumulation chamber 36 of the suction port body 30 is automatically collected as described above. Thus, the suction port 30 can be cleaned again.
[0034]
FIG. 13 is a flowchart showing the operation of the control device 51. In FIG. 13, in step 1, it is determined whether or not a charging current is flowing from the charging circuit 50. When it is determined as no, the process returns to step 1, and when it is determined as YES, the process proceeds to step 2. In step 2, the electric blower 17 is driven and the internal timer is activated. In step 3, it is determined whether or not the time measured by the internal timer has reached a predetermined time. If no, the process returns to step 3, and if yes, the process proceeds to step 4. In step 4, the driving of the electric blower 17 is stopped and the operation of the internal timer is stopped, and the process returns to step 1.
[0035]
By the way, since the dust collecting hose or the like is not connected to the operation pipe 31 of the suction port body 30, the load for moving the suction port body 30 in the front-rear direction is small, and the operation becomes very troublesome. Moreover, since it is not necessary to move the cleaner body 11, the moving load of the suction port body 30 is further reduced, and the power cord is obstructed because it is not necessary to move the cleaner body 11. There is nothing.
[0036]
In the above embodiment, the shutter 46 is moved downward by its own weight and closes the connection port 45. However, the shutter 46 is biased downward by a spring so that the projection of the main body case 13 protrudes from the recess 46A of the shutter 46. When 21 is released, the shutter 46 may be closed by the biasing force of the spring.
[0037]
【The invention's effect】
As described above, according to the first aspect of the present invention, there is provided a suction port body having a suction case in which an opening for taking in dust is formed on the lower surface, and the dust on the surface to be cleaned is scraped out from the opening. Dust scraping means to be taken into the suction case and a storage chamber for storing the dust taken into the suction case are provided in the suction case, and the dust stored in the storage chamber is sucked from the outside. Since the connection port is provided in the suction case, it can be cleaned while moving only the suction port body, and therefore the movement load of the suction port body can be reduced. Moreover, the movement load of the suction port body can be further reduced by not having to move the cleaner body, and the power cord can be obstructed by not having to move the cleaner body. Nor.
[0038]
Moreover, a dust collecting chamber for collecting dust is formed in the vacuum cleaner main body, and an electric blower that makes this dust collecting chamber have a negative pressure is connected to the suction port body when the suction port body is held in the holding portion. Since the vacuum cleaner body is provided with a suction hole that is connected to the mouth and communicates with the storage chamber of the suction mouth body and the dust collection chamber, by holding the suction mouth body in the holding portion , The dust accumulated in the accumulation chamber can be sucked into the dust collection chamber of the cleaner body.
[0039]
According to a second aspect of the present invention, the suction port body includes a motor that operates the dust scraping means and a rechargeable battery that drives the motor. When the suction port body is held by the holding portion, the rechargeable battery is Since the charging circuit for charging is provided in the cleaner body, the rechargeable battery can be charged by holding the suction port body in the holding portion.
[0040]
According to the third aspect of the present invention, when the suction port body is held by the holding portion, the electric blower is driven to suck the dust in the storage chamber of the suction port body, so the suction port body is held by the holding portion. Thus, the dust accumulated in the accumulation chamber of the suction port body can be automatically sucked.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an external appearance of a vacuum cleaner according to the present invention.
FIG. 2 is a longitudinal sectional view showing a schematic configuration of the electric vacuum cleaner shown in FIG.
FIG. 3 is a plan sectional view showing a schematic configuration of the electric vacuum cleaner shown in FIG. 1;
FIG. 4 is a perspective view showing a cleaner body.
FIG. 5 is an enlarged cross-sectional view showing a terminal boss.
FIG. 6 is an enlarged cross-sectional view showing a fitting boss.
FIG. 7 is an enlarged cross-sectional view showing a state in which the terminal boss is fitted into the fitting boss.
FIG. 8 is an explanatory view showing a state in which the protrusion of the main body case is engaged with the recess of the shutter of the suction port body.
FIG. 9 is an explanatory view showing a configuration in which a shutter is provided at a connection port of the suction case.
FIG. 10 is an explanatory view showing a state where the suction port body is placed on the placement portion and the shutter of the connection port is opened.
FIG. 11 is a block diagram showing a configuration of a control system of the vacuum cleaner.
FIG. 12 is an explanatory view showing a state where cleaning is performed by a suction port body.
FIG. 13 is a flowchart showing the operation of the control device.
[Explanation of symbols]
30 Suction port body 32 Opening 33 Suction case 35 Rotating cleaning body 36 Storage chamber 45 Connection port

Claims (4)

A suction port body having a suction case with an opening for taking in dust formed on the lower surface, a dust collection chamber in which dust is accumulated, and an electric motor for creating a negative pressure in the dust collection chamber to suck the dust into the dust collection chamber And a vacuum cleaner main body provided with a holding part for detachably holding the suction port body, and disposed in the suction case so as to face the opening. Dust scraping means for scraping and taking the dust into the suction case from the opening, a storage chamber for storing the dust taken into the suction case, and the operation of the electric blower for storing the dust stored in the storage chamber And a connection port for suctioning into the dust collection chamber of the vacuum cleaner body by a negative pressure suction force by the vacuum cleaner body, the vacuum cleaner body in the state where the suction port body is held in the holding portion The connection of the suction port Is connected to the mouth, the and the storage chamber and the dust collecting chamber and the suction holes communicating with each other in the suction port body is provided, said openings, the state in which the suction port body is held by the holding portion without being blocked by the formed holder recess, vacuum cleaner, characterized in that it is outside air communicating through the recess. The suction port body includes a motor that operates the dust scraping means and a rechargeable battery that drives the motor,
The vacuum cleaner according to claim 1, wherein a charging circuit for charging the rechargeable battery is provided in the vacuum cleaner body when the suction port is held by the holding portion.   The vacuum cleaner according to claim 2, wherein when the suction port body is held by a holding portion, the electric blower is driven to suck dust in a storage chamber of the suction port body.   The vacuum cleaner according to claim 2 or 3, wherein the suction port body includes a shutter that opens and closes a connection port, and the shutter opens when the suction port body is held by a holding portion.

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