JP4463250B2 - Vacuum cleaner - Google Patents

Description

  The present invention relates to a vacuum cleaner including a suction body that sucks dust on a floor surface, an extension pipe and an extension hose connected to the suction body, and a vacuum cleaner body connected to the extension hose.

In electric vacuum cleaners, reducing noise during use has become a major issue. As a suction body for reducing noise, there is one disclosed in Patent Document 1 (Japanese Patent Laid-Open No. 2001-87178). In this thing, the silencer is arrange | positioned in the pipe line of the connection pipe connected to the suction body main body. In the invention disclosed in Patent Document 1, it is intended to reduce the wind noise generated in the pipe by disposing a silencer in the pipe.
JP 2001-87178 A

  According to the inventor's study, noise is particularly a problem when the suction body is lifted from the floor and the air volume in the pipe increases rapidly, rather than during normal cleaning work. I understood.

  This invention was made in order to solve the said subject, and it aims at providing the vacuum cleaner provided with the suction body which can reduce the noise when a suction body is lifted from the floor surface. .

According to the vacuum cleaner based on this invention, it is provided with a suction body that sucks in dust on the floor, an extension pipe and an extension hose connected to the suction body, and a vacuum cleaner body connected to the extension hose. ing. The mouthpiece has a mouthpiece body and a connecting pipe connected to the extension pipe. Any of the above箇office connection pipe in the line length is a rotatable pivotal connecting portion in the vertical direction. Adjacent to the upper front part of the rotating connecting portion, a section is provided that communicates with the inside and outside space of the connecting pipe and is provided with a sound absorbing material. An opening provided between the compartment and the inside of the connecting pipe is opened and closed by a distal end portion of the connecting pipe constituting the rotary connecting portion, and the distal end portion lifts the suction body and rotates and connects the opening. The opening is opened in accordance with the rotation of the rotation connecting part where the pipe line before and after the part approaches a straight line, and the tip part is arranged on the cleaning surface , and the pipe line before and after the rotating connection part The opening is closed in accordance with the turning of the turning connecting portion that bends.

In the above electric vacuum cleaner, rotates the pivotal connecting portion by lifting the upper Symbol extension tube, said pivotal coupling to pivot stops in a state in which the front and rear of the conduit of the pivotal coupling portion forms a straight line The part may be configured.

  The said vacuum cleaner WHEREIN: The ventilation hole which connects the said division and external space may be provided in the position which does not oppose a floor surface.

  In the electric vacuum cleaner, a partition wall for further partitioning the partition is provided in the partition, and an end surface of the partition wall on the side of the rotation connecting portion is formed in an arc shape so that the rotation guide in the rotation connecting portion is provided. You may make it make.

  According to the vacuum cleaner according to the present invention, it is possible to reduce noise when the suction body is lifted from the floor surface.

  Hereinafter, the structure of the vacuum cleaner in each embodiment based on this invention is demonstrated, referring a figure.

  FIG. 1 is a perspective view showing the structure of the electric vacuum cleaner of the present embodiment. The vacuum cleaner of the present embodiment includes a suction body 200 that sucks in dust on the floor, an extension pipe 130 and an extension hose 120 connected to the suction body 200, and a vacuum cleaner body 110 connected to the extension hose 120. It has.

  The vacuum cleaner main body 110 includes a negative pressure generation source including a motor and a fan (not shown) that generates a negative pressure. The extension hose 120 and the extension pipe 130 connected to the main body 110 of the vacuum cleaner communicate with the negative pressure generation source. Dust on the floor surface can be sucked from the suction body 200 connected to the extension pipe 130 by the negative pressure generated by the negative pressure generating source.

  FIG. 2 is an exploded perspective view of the mouthpiece of the present embodiment. As shown in FIG. 2, the mouthpiece of the present embodiment includes a mouthpiece body 300, a base 400, and a connecting pipe 500.

  The mouthpiece body 300 is configured in a rectangular shape in plan view whose width direction is longer than the front-rear direction. The mouthpiece body 300 has a lower cover 310 and an upper cover 390. A rotating brush 350 is rotatably attached to the lower surface side of the lower cover 310 by a cap 360.

  A motor 320 that drives the rotating brush 350 is attached to the inside of the lower cover 310. The rotating brush 350 and the motor 320 are connected by a driving belt (not shown). A bumper member 365 that reduces the impact of collision is attached to the front side of the lower cover 310.

  An opening surrounded by the circular rib 330 is provided at the center of the lower cover 310. The opening communicates with a dust suction port that is opened on the lower surface of the lower cover 310. An upper cover 390 is attached so as to close the upper surface of the lower cover 310. The upper cover 390 is provided with a pair of protruding engaging portions 391 that protrude upward.

  A base 400 composed of an upper member 401 and a lower member 410 is attached to the lower cover 310 so as to fit the circular rib 330 so as to be rotatable in the horizontal direction. The base 400 is attached to the lower cover 310 by a circular frame-shaped presser 380 that engages with the outer peripheral side thereof.

  A part of the base 400 is recessed in a rectangular shape, and the distal end portion of the connecting tube 500 is inserted into the recessed portion while ensuring airtightness. A shaft 620 that protrudes from both sides is provided at the tip of the connecting tube 500. The shaft 620 is sandwiched between the upper member 401 and the lower member 410 and is rotatably held. Thereby, the connecting pipe 500 is held by the base 400 so as to be rotatable in the vertical direction.

  A rib 610 is provided on the upper surface of the distal end portion of the connecting tube 500, and this contacts the inner surface of the upper member 401 of the base portion 400, so that the airtightness between the connecting tube 500 and the base portion 400 is maintained. The side surface of the distal end portion of the connecting tube 500 is in contact with the inner side surface of the recess of the base portion 400 without a gap.

  FIG. 3 is an exploded perspective view showing the structure of the connecting pipe of the present embodiment. The connecting pipe 500 is divided into a first connecting pipe that forms the front end side and a second connecting pipe 800 that forms the rear end side. Further, the first connection pipe is divided into a front end side first connection pipe 600 and a rear end side first connection pipe 700.

  The distal-end-side first connecting pipe 600 includes a main body and an upper surface constituent member 650 that is screwed to the upper surface. The distal end side of the main body of the distal end side first connecting pipe 600 is formed in a cylindrical shape having a rectangular cross section. A shaft 620 is provided on both side surfaces of the distal end portion of the main body of the distal end side first connecting pipe 600, and a rib 610 is provided on the upper surface of the distal end portion.

  Further, a cylindrical connecting portion 630 configured in a cylindrical shape is formed at the rear portion of the main body of the distal end side first connecting tube 600. The rear end side first connection pipe 700 is connected via the cylindrical connection part 630. Furthermore, a bearing portion 640 is provided on the lower surface side of the main body of the distal end side first connecting pipe 600. An auxiliary wheel 660 that rolls on the floor surface is rotatably attached to the bearing portion 640.

  The rear end side first connection pipe 700 includes a main body 720 and a lid member 740. An annular ring member 710 is provided on the distal end side of the main body 720. The distal end portion of the cylindrical coupling portion 630 of the distal end side first coupling tube 600 is inserted inside the ring member 710. Thereby, the cylindrical connection part 630 is rotatably connected along the inner peripheral surface of the ring member 710.

  A second connection pipe 800 is connected to the rear end portion of the rear end side first connection pipe 700 so as to be rotatable in the vertical direction. Specifically, the shaft 810 at the tip of the second connecting pipe 800 is sandwiched between the main body 720 and the lid member 740 so as to be freely rotatable. The main body 720 and the lid member 740 are fixed by screws that pass through the screw holes 730.

  A plurality of vent holes 750 are provided on the upper surface of the lid member 740. A plurality of sections are formed on the lower surface side of the lid member 740, and a sound absorbing material is disposed inside thereof. These structures will be described later.

  The second connection pipe 800 includes a second connection pipe main body 820 and a second connection pipe lid member 850. A shaft 810 is provided on both side surfaces of the distal end portion of the second connecting pipe main body 820. As described above, the shaft 810 is rotatably held by the rear end side first connection pipe 700.

  The second connecting pipe lid member 850 is fixed to the second connecting pipe main body 820 with screws. An electrode connected to the extension tube 130 is held between the second connecting tube lid member 850 and the second connecting tube main body 820. The extension pipe 130 is connected to the rear end portion of the second connection pipe 800.

  FIG. 4 is a perspective view showing the structure of the mouthpiece of the present embodiment. As shown in FIG. 4, the mouthpiece 200 according to the present embodiment has a plurality of adjacent adjoining rotary connecting portions that connect the rear end side first connecting tube 700 and the second connecting tube 800 of the connecting tube 500. A vent hole 750 is provided.

  FIG. 5 is a plan view showing the structure of the mouthpiece of the present embodiment, and FIGS. 6 and 7 are longitudinal sectional views thereof. As shown in FIG. 5, the rear end side first connecting pipe 700 is provided with a section through which the vent hole 750 communicates. This section is further divided into three by a pair of partition walls 770 here. The inside of the compartment is filled with a sound absorbing material 760 as shown in FIGS.

  Here, foamed urethane is used as the sound absorbing material 760. The sound-absorbing material is not limited to urethane foam, and a continuous foaming foamed resin or a material that absorbs noise such as fibers can be used. As shown in FIG. 7, the section is configured to have a height on the rear end side, and a sound absorbing material 760 is attached so as to conform to the shape.

The partition wall 770 is provided so as to extend not only to the portion where the sound absorbing material 760 is provided, but also to the downstream side thereof. As shown in FIG. 6, the rear end side (rotation connecting portion side) end surface of the partition wall 770 is formed in an arc shape. The distal end portion of the second connecting pipe 800 rotates while contacting the arcuate end surface of the partition wall 770. That is, the arc-shaped end surface of the partition wall 770 functions as a guide when the second connecting pipe 800 rotates.

  Moreover, since the contact area with the sound absorbing material 760 can be increased by dividing the partition wall 770, the sound absorbing material 760 can be more reliably fixed in the compartment.

  An opening 780 is provided between the section where the sound absorbing material 760 is provided and the inside of the connecting pipe 500. However, in the normal use state shown in FIG. 6, the opening 780 is closed by the distal end portion 860 of the second connecting pipe 800.

  As shown in FIG. 7, when the mouthpiece 200 is lifted through an extension pipe (not shown), the first connection pipe and the mouthpiece body 300 are rotated with respect to the second connection pipe 800. Thereby, the front-end | tip part 860 of the 2nd connecting pipe 800 rotates back, and the opening 780 is open | released.

  When the opening 780 is opened, air is also sucked from the vent hole 750 due to the negative pressure generated by the vacuum cleaner body. This air passes through the sound absorbing material 760 and is sucked into the pipe line through the opening 780.

  With this configuration, air is sucked from the vent hole 750 only when the mouthpiece 200 is lifted. Thereby, the air volume sucked from the mouthpiece body can be reduced, and as a result, the wind noise generated in the mouthpiece body 300, the distal end side first connecting pipe 600, etc. can be greatly reduced. .

  Further, according to this configuration, the opening 780 communicating with the vent hole 750 is opened only when the suction body 200 is lifted (FIG. 7), and the opening 780 is closed in a normal use state (FIG. 6). Air is hardly sucked from the vent hole 750. Thereby, in the normal use state, the air volume from the mouthpiece body 300 is not reduced, and the adverse effect on the suction force in the normal use state can be eliminated.

  Further, since air sucked from the vent hole 750 is sucked into the pipe line via the sound absorbing material 760, noise generated in the vent hole 750 and its surroundings can be absorbed. Further, in the state where the opening 780 is opened, the end surface of the sound absorbing material 760 is exposed toward the inside of the pipe line, so that the noise in the pipe line can be absorbed by the sound absorbing material 760.

  With these actions, it is possible to effectively reduce the noise that is generated when the suction body 200 is lifted from the floor surface and that is caused by the rapid increase in the air volume.

  At the same time, in the mouthpiece of the present embodiment, when the mouthpiece 200 is lifted, the rotation of the first connecting pipe and the second connecting pipe 800 is stopped in a state where the pipe lines of the first connecting pipe and the second connecting pipe 800 are linear. It is configured. Specifically, the outward rib provided at the front end portion 860 of the second connecting pipe 800 and the inward rib provided at the rear end of the lid member 740 come into contact with each other, so that the rotation of both is performed. Stop.

  When the suction body 200 is lifted, the flow of the air in the pipe line becomes linear by making the pipe lines of the first connecting pipe and the second connecting pipe 800 straight. Thereby, the noise by the flow of the air which generate | occur | produces in a pipe line can be minimized.

  Further, the vent hole 750 of the present embodiment is provided in the lid member 740 of the rear end side first connection pipe 700. That is, the vent hole 750 is provided upward and does not face the floor surface. Thereby, when air is sucked from the vent hole 750, dust on the floor can be prevented from being sucked into the vent hole 750.

  The total area of the plurality of vent holes 750 and the area of the openings 780 are preferably substantially the same. In this case, air can be sucked from the vent hole 750 most effectively. In the present embodiment, the diameter of the vent hole 750 is set to about 2.5 to 3.0 mm.

  In the present embodiment, the vent hole 750 and the sound absorbing material 760 are disposed in the vicinity of the joint portion between the first connecting pipe and the second connecting pipe 800. Then, the opening 780 is opened and closed by the rotation of the first connecting pipe and the second connecting pipe 800.

  The first connecting pipe has a certain length, and a suction body body 300 that is a heavy object is connected to the tip of the first connecting pipe. Therefore, by lifting the suction body through the extension pipe 130, the rear end side first The connecting pipe 700 can be reliably rotated to a predetermined position. Thereby, since the front-end | tip part 860 of the 2nd connecting pipe 800 retreats to a predetermined position, the opening 780 can be opened reliably.

  In the present embodiment, the vent hole 750 and the sound absorbing material 760 are provided in the first connecting pipe, but these may be provided in the suction body 300 or the base 400. In this case, the opening connected to the sound absorbing material may be opened and closed by the rotation of the suction body main body 300 and the base 400 and the first connecting body.

  In addition, the said embodiment disclosed this time is an illustration in all the points, Comprising: It does not become the basis of limited interpretation. Therefore, the technical scope of the present invention is not interpreted only by the above-described embodiments, but is defined based on the description of the claims. Further, all modifications within the meaning and scope equivalent to the scope of the claims are included.

It is a perspective view which shows the structure of the vacuum cleaner in embodiment based on this invention. It is a disassembled perspective view of the mouthpiece in embodiment based on this invention. It is a disassembled perspective view which shows the structure of the connecting pipe in embodiment based on this invention. It is a perspective view which shows the structure of the suction mouth in embodiment based on this invention. It is a top view which shows the structure of the suction mouth in embodiment based on this invention. It is a longitudinal cross-sectional view which shows the structure of the suction mouth in embodiment based on this invention. It is a longitudinal cross-sectional view which shows operation | movement of the mouthpiece in embodiment based on this invention.

Explanation of symbols

  110 Vacuum cleaner body, 120 Extension hose, 130 Extension pipe, 200 Suction body, 300 Suction body, 310 Lower cover, 320 Motor, 330 Circular rib, 350 Rotating brush, 355 roller, 360 cap, 365 Bumper member, 380 Presser 390 Upper cover, 391 engaging part, 400 base part, 401 upper member, 410 lower member, 500 connecting pipe, 600 tip side first connecting pipe, 610 rib, 620 shaft, 630 cylindrical connecting part, 640 bearing part, 650 Top surface component, 660 Auxiliary wheel, 700 Rear end side first connecting pipe, 710 Ring member, 720 Main body, 730 Screw hole, 740 Lid member, 750 Vent hole, 760 Sound absorbing material, 770 Partition wall, 780 Opening, 800 Two connecting pipes, 810 shaft, 820 Second connecting pipe body, 850 Second connecting pipe lid Wood.

Claims (4)

A suction body for sucking dust on the floor, an extension pipe and an extension hose connected to the suction body, and a vacuum cleaner body connected to the extension hose,
The mouthpiece has a mouthpiece body and a connecting pipe connected to the extension pipe,
Wherein any of箇locations in the conduit length of the connecting pipe are a rotatable pivotal connecting portion in the vertical direction,
Adjacent to the upper front of the rotating connecting portion, a section in which a sound-absorbing material is disposed in communication with the inside and outside space of the connecting pipe is provided,
An opening provided between the compartment and the inside of the connecting pipe is opened and closed by a distal end portion of the connecting pipe constituting the rotational connecting portion, and the distal end portion lifts the suction body and rotates and connects. The opening is opened in accordance with the rotation of the rotation connecting part where the pipe line before and after the part approaches a straight line, and the tip part is arranged on the cleaning surface , and the pipe line before and after the rotating connection part A vacuum cleaner that closes the opening in accordance with the rotation of the rotation connecting portion that bends. Rotates the rotatable connecting portion lifts the front Symbol extension tube, said longitudinal conduits of the rotatable connecting portion there is the pivotal connecting portion so as to stop rotation in a state forming a straight line is constructed The electric vacuum cleaner according to claim 1.   The vacuum cleaner of Claim 1 or 2 with which the vent hole which connects the said division and external space is provided in the position which does not oppose a floor surface.   The partition wall further partitioning the partition is provided in the partition, and the end surface of the partition wall on the side of the rotation connecting portion is formed in an arc shape to form a rotation guide in the rotation connecting portion. To 4. The vacuum cleaner according to any one of 3.

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