JP2004167268A - Upright type vacuum cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an upright type vacuum cleaner capable of reducing the load of a cleaning work by suppressing the vibration of a suction nozzle body and improveing a dust collecting efficiency by always bringing a suction port closer to a floor face. <P>SOLUTION: A bottom plate 6d of a suction nozzle body 6 is turnably supported on an engaging part 6p on the lower face in the front end part of the suction nozzle body 6 by a claw part 6r and detachably fixed with the suction nozzle body 6 by a fastening screw 10 penetrated through an inserting port 6z. The fastening screw 10 is screwed fastened to a boss part 6t through the center part of a compression spring 11. Seal members 13, 14 are fixed to the bottom plate 6d to prevent air intake leakage during rotation of the bottom plate 6d. The bottom plate 6d is turnably supported by the claw part 6r and energized in the direction to the floor face F by the compression spring 11. The head part 10a of the fastening screw 10 performs a role of a regulating means for pressing the bottom plate 6d by the compression spring 11. The lowest position of the bottom plate 6d can be changed by a fastening amount of the fastening screw 10. <P>COPYRIGHT: (C)2004,JPO

Description

  The present invention relates to an improvement of an upright type vacuum cleaner.

  FIG. 12 shows a conventional upright type vacuum cleaner. The cleaner body 1 is composed of a vertical hollow body having wheels 5 rotatably provided at the rear of the bottom surface. The inside of the cleaner body 1 is partitioned by a partition wall 1a into an upper dust collecting chamber 1b and a lower electric blower chamber 1c, and a handle portion 2 is formed integrally with the upper part of the dust collecting chamber 1b. . The dust collection chamber 1b houses the dust collection bag 3 and has a front surface formed to be openable and closable with an opening / closing door 1d. The electric blower room 1c houses the electric blower 4 and has an exhaust port 1e opened on the front surface.

  A suction nozzle body 6 is provided at a lower portion of the cleaner body 1. As shown in the bottom view of FIG. 13, the suction nozzle body 6 is formed of a hollow body having a flat concave shape. The suction nozzle body 6 is disposed so as to sandwich the electric blower chamber 1c between the arms 6a and 6b on both sides, and is turned around a boss 1f provided on both side walls of the electric blower chamber 1c coaxially with the rotation shaft 4a of the electric blower 4. It is pivotally movable.

  The suction nozzle body 6 has a suction port 6e which is open at the front and faces the floor surface F, and is provided with a suction port 6c which is covered by a bottom plate 6d and partitioned by a rear wall surface 6f. The brush body 7 is provided horizontally rotatably. The rotating brush body 7 receives the rotational force of the rotating shaft 4a by a transmission belt 8 suspended between a pulley 7a formed at one end thereof and a rotating shaft 4a of the electric blower 4 protruding into the arm 6a. .

  A connection port 1h is provided in the other arm 6b of the suction nozzle body 6, one end of the suction hose 9 is connected, and the other end is connected to a dust collection port 1g provided in the dust collection chamber 1b. Then, the suction nozzle body 6 rotates the rotary brush 7 by driving the electric blower 4 to lift up the floor surface F, and sends air containing dust to the dust collection bag 3 via the suction port 6 c and the suction hose 9. It has become. The bottom plate 6d of the suction nozzle body 6 is provided with a reinforcing beam 6w substantially at the center of the intake port 6e to prevent deformation of the open intake port 6e.

  In such an upright type vacuum cleaner, the suction port 6c is surrounded by a partition wall such as a rear wall surface 6f, and the rotating brush body 7 and the rear wall surface 6f are spirally planted on the outer peripheral surface of the rotating brush body 7. It has such a small gap that it does not come into contact with the provided flocking 7b. Therefore, when a suction force is generated by driving the electric blower 4, dust on the floor surface F passes through a narrow gap between the outer periphery of the rotary brush body 7 and the rear wall surface 6 f of the suction port 6 c in the longitudinal direction of the rotary brush body 7. Since the flow proceeds toward the connection port 1h, there is a problem that the pressure loss is large and the dust collection efficiency is reduced.

  Also, in order to prevent the reinforcing beam 6w of the bottom plate 6d provided on the floor side of the suction nozzle body 6 from interfering with the rotating brush body 7, the flocking 7b of the rotating brush body 7 is partially deleted ( 7c). For this reason, when cleaning a carpet, there was a problem that it was not possible to scrape out dust on the carpet facing the place where the flocking 7b was deleted.

  An object of the present invention is to provide an upright-type vacuum cleaner capable of improving dust collection efficiency.

  In order to achieve the above object, the invention described in claim 1 has an opening of a main body having an electric blower room accommodating an electric blower, a dust collecting chamber communicating with the electric blower room, and a bottom plate attached to a lower surface. An upright type vacuum cleaner having a suction port for sucking dust through a suction port and being attached to a lower portion of the main body, wherein one end of the bottom plate is rotatable with respect to the suction nozzle. And is attached to the suction nozzle body via an urging means for urging the other end downward.

  According to this configuration, the bottom plate is rotatably mounted and urged by the urging means, and when the suction nozzle body is moved on the floor surface, the bottom plate is pressed against the floor surface and follows the uneven shape of the floor surface. Rotate.

  According to a second aspect of the present invention, in the upright vacuum cleaner according to the first aspect, a regulating unit that regulates rotation of the bottom plate in the urging direction by the urging unit is provided. Features. According to this configuration, the bottom plate is rotatably mounted and urged by the urging means, and when the suction nozzle body is moved on the floor surface, the bottom plate is moved to the floor surface within the rotation range regulated by the regulating means. It is pressed and rotates along the uneven shape of the floor surface.

  The present invention is configured as described above. According to the first aspect of the present invention, the unevenness of the floor surface is absorbed by the rotation of the bottom plate, and the vibration of the suction nozzle body is suppressed to perform the cleaning operation. The load can be reduced, and the floor surface and the air inlet can be always brought close to each other, so that the dust collection efficiency can be improved.

  According to the second aspect of the invention, the unevenness of the floor surface is absorbed by the rotation of the bottom plate, and the vibration of the suction nozzle body is suppressed to reduce the burden of the cleaning work. The dust collection efficiency can be improved. Further, in the case of a hard floor surface such as a flooring, the floor surface can be prevented from being damaged by restricting the bottom plate from contact with the floor surface by the restricting means.

  An embodiment of the present invention will be described with reference to the drawings. For convenience of description, the same members as those in FIGS. 12 and 13 of the conventional example are denoted by the same reference numerals. FIG. 1 is a side sectional view showing the upright type vacuum cleaner of the first embodiment.

  The cleaner body 1 is composed of a vertical hollow body having wheels 5 rotatably provided at the rear of the bottom surface. The inside of the cleaner body 1 is partitioned by a partition wall 1a into an upper dust collecting chamber 1b and a lower electric blower chamber 1c, and a handle portion 2 is formed integrally with the upper part of the dust collecting chamber 1b. . The dust collection chamber 1b houses the dust collection bag 3 and has a front surface formed to be openable and closable with an opening / closing door 1d. The electric blower room 1c houses the electric blower 4 and has an exhaust port 1e opened on the front surface.

  A suction nozzle body 6 is provided at a lower portion of the cleaner body 1. As shown in the bottom view of FIG. 2, the suction nozzle body 6 is formed of a hollow body having a flat concave shape, and is arranged so that the electric fan room 1c is sandwiched between the arms 6a and 6b on both sides, and the rotation axis of the electric fan 4 is formed. It is rotatably supported by bosses 1f provided on both side walls of the electric blower chamber 1c coaxially with 4a.

  The suction nozzle body 6 has a suction port 6e which is open at the front and faces the floor surface F, and is provided with a suction port 6c which is covered by a bottom plate 6d and partitioned by a rear wall surface 6f. , A rotating brush body 7 is rotatably provided horizontally inside. The rotating brush body 7 is rotatably supported at its both ends by bearings 6h, 6h, and a transmission belt 8 suspended between a pulley 7a formed at one end and a rotating shaft 4a of the electric blower 4 protruding into the arm 6a. As a result, the rotating force of the rotating shaft 4a is received.

  Further, the suction port portion 6c forms an expanded portion 6g bulging rearward from a lower portion of the rear wall surface 6f (first rear wall surface), that is, a wall surface facing below the rotation center of the rotating brush body 7. A connection port 6i communicating with an opening 6n formed in a rear wall surface 6j (second rear wall surface) of the arm portion 6b side of the extension portion 6g is provided. One end of a suction hose 9 (suction-side flow path) is connected to the connection port 6i, and the other end is connected to a dust collection port 1g provided in the dust collection chamber 1b.

  Then, the rotating brush 7 is rotated by the driving of the electric blower 4 and lifts up the floor surface F, and the air containing dust is transferred to the dust collecting bag 3 via the extension 6g, the opening 6n, the connection port 6i, and the suction hose 9. It is being sent. In addition, 10 is a power switch, and 11 is a power cord.

  In this upright type vacuum cleaner, when an insertion plug (not shown) at the end of a power cord 11 is inserted into a power outlet and a power switch 10 is turned on, the electric blower 4 is driven to rotate its rotary shaft 4a. . The rotation of the rotating shaft 4a is transmitted to the rotating brush body 7 via the transmission belt 8 and the pulley portion 7a to rotate the rotating brush body 7.

  The rotating brush body 7 scrapes out dust on the floor surface F through an intake port 6e provided in the bottom plate 6d of the suction nozzle body 6. On the other hand, as the electric blower 4 is driven, a suction force acts on the dust collection chamber 1b through a communication port (not shown) provided between the electric blower chamber 1c and the dust collection chamber 1b. The suction force acts on the suction port portion 6c via the dust bag 3, the suction hose 9, and the connection port 6i, so that the air containing dust on the floor surface scraped up by the rotating brush body 7 is connected to the connection port 6i. Through the suction hose 9.

  Further, the dust-containing air is sucked into the dust collecting bag 3 of the dust collecting chamber 1b from the dust collecting port 1g through the suction hose 9 to collect the dust. The air from which the dust is collected by the dust bag 3 flows from the dust collection chamber 1b to the electric blower chamber 1c, and is discharged to the outside through an exhaust port 1e provided in the vacuum cleaner main body 1.

  In this way, by driving the electric blower 4, on the one hand, the dust on the floor surface F is swept up by the rotation of the rotating brush body 7, and on the other hand, the air on the floor surface F is sucked through the suction port 6 c by the suction action of the electric blower 4. Will inhale. In the present invention, as described above, an extended portion 6g is formed in which the lower portion of the rear wall surface 6f is bulged rearward as described above, and between the rear wall surface 6j of the extended portion 6g and the flocking 7b of the rotating brush body 7. A sufficient gap is formed.

  Therefore, the intake air containing dust passes through the expanded portion 6g of the suction port 6c, so that the cross-sectional area increases and the pressure loss does not increase, and the suction air flows from the suction port 6c to the suction hose 9c through the opening 6n. It will be smoothly sucked. Further, since the extended portion 6g is formed below the rear wall surface 6f, the dust scraped up by the rotating brush body 7 is smoothly sucked into the suction hose 9 without being stirred in the suction port 6c. .

  In the present embodiment, the extended portion 6g is formed integrally with the outer wall such as the rear wall surface 6f forming the suction port 6c with the same member, but as shown in the sectional view of the main part in FIG. The extended portion 6g may be fixed to the wall surface 6f with the fixing rib 12a, and the extended portion 6g may be formed as a separate member from the outer wall of the suction port 6c. This makes it possible to easily form the expanded portion 6g having a complicated shape.

  Also, as shown in FIG. 4, the angle α formed by the upper wall 6m and the rear wall 6f of the extension 6g is 90 ° or less, that is, the height of the upper wall 6m of the extension 6g extends rearward from the suction port 6c. It is desirable that the air including the dust sucked into the suction port 6c flows into the suction hose 9 more smoothly from the expansion 6g. In particular, it is possible to further reduce the dust flying by the rotation of the rotating brush body 7 being attracted to the rotating brush body 7 and to rotate, thereby increasing the dust collection efficiency.

  FIG. 5 is a bottom view of an upright type vacuum cleaner according to a second embodiment of the present invention. This embodiment is different from the first embodiment in that both side walls 6k, 6k in the expanded portion 6g of the suction nozzle body 6 are inclined surfaces facing the opening 6n provided on the arm 6b side. Other configurations are the same as those of the first embodiment.

  According to the present embodiment, when a suction force is generated in the suction port 6c of the suction nozzle body 6 in accordance with the driving of the electric blower 4, the air containing dust sucked into the expansion section 6g from the suction port 6c becomes the expansion section 6g. Flows smoothly and rapidly toward the opening 6n through the inclined surfaces of the side walls 6k, 6k, passes through the opening 6n, and is sucked into the dust collection chamber 1b through the connection port 6i and the suction hose 9. Therefore, it is possible to prevent sand or the like from remaining in the suction port 6c, and it is possible to enhance dust collection efficiency.

  FIG. 6 is a bottom view of an upright vacuum cleaner according to a third embodiment of the present invention. This embodiment is different from the first embodiment in that the opening 6n is provided at a substantially central portion in the longitudinal direction of the rear wall surface 6j of the extension 6g. Other configurations are the same as those of the first embodiment.

  According to the present embodiment, when a suction force is generated in the suction port 6c of the suction nozzle body 6 in accordance with the driving of the electric blower 4, the air containing dust sucked into the expansion section 6g from the suction port 6c becomes the expansion section 6g. After flowing toward the center of the rear wall surface 6j and passing through the opening 6n, it is sucked into the dust collection chamber 1b via the connection port 6i and the suction hose 9. Then, the dust is captured by the dust bag 3.

  FIG. 7 is a side sectional view of a main part of an upright type vacuum cleaner according to a fourth embodiment of the present invention. In the present embodiment, the bottom plate 6d of the suction nozzle body 6 is rotatably supported by an engaging portion 6p on the lower surface of the front end of the suction nozzle body 6 by a claw 6r provided at the front end thereof as shown in the figure. . Further, it is detachably attached to the suction nozzle body 6 by a set screw 10 inserted through an insertion port 6z provided at the rear end.

  The set screw 10 is screwed to the boss 6t through the center of a compression spring 11 having one end fitted and hanging from a boss 6t provided at the center of the upper wall of the suction nozzle body 6. A bottom plate 6d and a ring-shaped knob 22 are inserted between the head 10a of the set screw 10 and the compression spring 11. Reference numerals 13 and 14 denote sealing members provided between the inner surface of the bottom plate 6d, the rear wall surface 6f, and the front rib 6q of the suction nozzle body 6, and are fixed to the bottom plate 6d, respectively, when the bottom plate 6d rotates. This prevents leakage of intake air.

  With the above configuration, the bottom plate 6d is rotatably supported by the claw portions 6r and is urged in the direction of the floor surface F by the compression spring 11. Therefore, the head 10a of the set screw 10 serves as a restricting means for pressing the bottom plate 6d by the compression spring 11, and the lower limit position of the bottom plate 6d can be changed by the amount of tightening of the set screw 10. Further, the roller 21 that slides on the floor F together with the wheel 5 is provided at a fixed height to the suction nozzle body 6.

  According to this configuration, when the upright type vacuum cleaner is moved on the floor surface F by the wheels 5 and the rollers 21, the suction nozzle body 6 moves along the floor surface F. At this time, the bottom plate 6d comes into contact with the floor surface F and rotates about the claw 6r as a fulcrum while receiving the urging force of the compression spring 11 along the uneven shape of the floor surface F. As a result, the unevenness of the floor F is absorbed by the rotation of the bottom plate 6d, and the vibration of the suction nozzle body 6 is suppressed to reduce the load of the cleaning work. The dust collection efficiency can be improved by approaching. In the case of a hard floor surface F such as a flooring, the set screw 10 is adjusted so that the bottom plate 6 d does not contact the floor surface F, and the lower limit position of the bottom plate 6 d is higher than the lower end of the roller 21. The surface F can be prevented from being damaged.

  8 and 9 are a side sectional view and a bottom view of a main part of an upright type vacuum cleaner according to a fifth embodiment of the present invention. In the present embodiment, a reinforcing member 15 extending across the rotating brush body 7 is provided between the front wall surface 6u and the rear wall surface 6f of the suction port 6c in the suction port 6c of the suction nozzle body 6. I have. Other configurations are the same as those of the upright vacuum cleaner of the fourth embodiment.

  As shown in FIG. 10, the reinforcing member 15 includes straight vertical portions 15a and 15b extending vertically along the front wall surface 6u and the rear wall surface 6f of the suction port 6c, and the front and rear vertical portions 15a and 15b. It is formed of an inverted U-shaped plate member comprising an arc-shaped portion 15c connecting between upper end portions of 15b.

  FIG. 11 is an enlarged view of a portion A in FIG. 8, and the reinforcing member 15 is attached by fitting a positioning projection 15d provided at a lower end of a front vertical portion 15a into a positioning hole 6v formed in a front portion of the bottom plate 6d. . The suction nozzle body 6 is arranged inside the suction port 6c so as not to touch the rotating brush body 7 to reinforce the suction nozzle body 6. The vertical portion 15b is attached to the bottom plate 6d in the same manner as the vertical portion 15a.

  The reinforcing member 15 is formed of a thin plate material, and has a width sufficiently smaller than the width of the rotating brush body 7 in the longitudinal direction. Therefore, the rotation of the rotating brush body 7 is not hindered, and the flow of the airflow from the suction port 6c to the suction hose 9 is not hindered. The reinforcing member 15 may be installed at any position in the suction opening 6c other than the position facing the suction hose 9, but may be provided at the longitudinal center of the rotating brush body 7. Is the best to enhance the reinforcing effect.

  In the conventional vacuum cleaner, a reinforcing beam 6w (see FIG. 13) is provided substantially at the center of the intake port 6e of the bottom plate 6d to reinforce the suction nozzle body 6, but in the present embodiment, the reinforcing member 15 is provided. It is provided in the suction port 6c in a U-shape and in a shape that does not touch the rotating brush body 7. Therefore, the suction nozzle body 6 can be reinforced without providing the reinforcing beam 6w in the intake port 6e. In particular, since the reinforcing member 15 is fixed on the bottom plate 6d, the deformation of the intake port 6e can be prevented. Furthermore, since the flocking 7b can be provided over the entire length of the rotating brush body 7, the remaining of sand or the like on the carpet can be improved.

It is a side sectional view showing the upright type vacuum cleaner concerning a 1st embodiment of the present invention. It is a bottom view of the suction nozzle body of the upright type vacuum cleaner concerning a 1st embodiment of the present invention. It is a side sectional view showing other shapes of an expansion part of an upright type vacuum cleaner concerning a 1st embodiment of the present invention. It is a side sectional view showing other shapes of an expansion part of an upright type vacuum cleaner concerning a 1st embodiment of the present invention. It is a bottom view of the suction nozzle body in the upright type vacuum cleaner concerning a 2nd embodiment of the present invention. It is a bottom view of a suction nozzle object in an upright type vacuum cleaner concerning a 3rd embodiment of the present invention. It is a side sectional view showing an important section of an upright type vacuum cleaner concerning a 4th embodiment of the present invention. It is a side sectional view showing an important section of an upright type vacuum cleaner concerning a 5th embodiment of the present invention. It is a bottom view of the suction nozzle body of the upright type vacuum cleaner concerning a 5th embodiment of the present invention. It is a perspective view of the member for reinforcement provided in the upright type vacuum cleaner concerning a 5th embodiment of the present invention. FIG. 9 is an enlarged view of a portion A in FIG. 8. It is a side sectional view of the conventional upright type vacuum cleaner. It is a bottom view of the suction nozzle body of the conventional upright type vacuum cleaner.

Explanation of reference numerals

DESCRIPTION OF SYMBOLS 1 Vacuum cleaner main body 1b Dust collection room 1c Electric blower room 2 Handle part 3 Dust collection bag 4 Electric blower 6 Suction nozzle body 6c Suction opening 6d Bottom plate 6e Suction opening 6f Rear wall surface 6g Expansion part 6i Connection opening 6n Opening 7 Rotary brush Body 9 Suction hose 11 Pressing spring

Claims (2)

  A main body having an electric blower chamber accommodating an electric blower and a dust collection chamber communicating with the electric blower room, and a suction port for sucking dust through an air inlet opening a bottom plate attached to a lower surface, and the main body having the same. A suction nozzle body attached to a lower part of the upright type vacuum cleaner, wherein one end of the bottom plate is rotatably supported by the suction nozzle body and the other end is biased by a biasing means for biasing the other end downward. An upright type vacuum cleaner, wherein the vacuum cleaner is attached to the suction nozzle body.   The upright type vacuum cleaner according to claim 1, further comprising a regulating unit that regulates rotation of the bottom plate in the urging direction by the urging unit.

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