JP2009240550A - Power supply cord winding device and vacuum cleaner using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a user friendly vacuum cleaner in which cord piling in a power supply cord winding device is prevented, and winding and rewinding of the power cable is made smoothly. <P>SOLUTION: The power supply cord winding device 3 of the shape of a one-stage spiral includes a rotary drum 13 formed with a winding barrel part 20 for winding up a power supply cord 16 and a disk-like base wall 14 for mounting the wound up power supply cord 16 in its bottom, a drum support shaft 12 rotatably supporting the rotary drum 13, a rotating body 19 freely rotatable in the winding direction of power supply cord 16 in the position facing the rotary drum 13 across the power supply cord 16, and a rotating body 19. While the rigidity of the power supply cord winding device 3 itself is increased, the power supply cord winding space can be kept constant and smooth power supply cord winding property can be secured by reduction of the winding resistance by rotatable body 19. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a power cord winding device and a vacuum cleaner having the same.

A conventional power cord winding device of this type has a configuration in which upper and lower walls on a disk are formed above and below a rotating drum, and the power cord is wound between the upper and lower walls to be rotated. (For example, see Patent Document 1).
JP-A-60-97177

  However, in the power cord winding device as described above, since the diameter of the rotating drum is large in the power cord used for a household vacuum cleaner, the smoothness of the power cord due to the influence of warping due to molding and lack of rigidity. There was a problem that winding was not possible.

  The present invention solves the above-described conventional problems, and increases the rigidity of the power cord winding device itself, keeps the power cord winding space constant, and reduces the winding resistance by the rotating body to achieve a smooth power source. It is intended to ensure the windability of the cord and improve usability.

  In order to solve the above-mentioned conventional problems, a winding drum for winding a power cord, a disk-shaped rotating drum for placing the wound power cord, and a drum support shaft for rotatably supporting the rotating drum A rotating body provided at a position facing the rotating drum across the power cord and having a rotating shaft parallel to the rotating drum and rotatable in the winding direction of the power cord, the rotating drum and the rotating body The power cord is wound in a horizontal direction and in a single spiral shape.

  With the above configuration, the rigidity of the power cord winding device itself can be increased, the power cord winding space can be kept constant, and smooth winding of the power cord can be ensured by reducing the winding resistance by the rotating body. Is something that can be done.

  An object of the power cord winding device of the present invention is to prevent the cords from overlapping in the device and to smoothly put in and out the power cord and to minimize the outer diameter of the main body of the vacuum cleaner.

  A first invention is a winding drum for winding a power cord, a disk-shaped rotating drum for placing the wound power cord, a drum support shaft that rotatably supports the rotating drum, and the power cord A rotary body having a rotary shaft parallel to the rotary drum and rotatably provided in a winding direction of a power cord at a position facing the rotary drum with the power source interposed between the rotary drum and the rotary body. The cord is wound in a horizontal direction and in a one-stage spiral shape. The rigidity of the power cord winding device itself can be increased, the power cord winding space can be kept constant, and the winding by the rotating body can be maintained. By reducing the take-up resistance, it is possible to ensure smooth winding of the power cord.

  In the second invention, the rotating body is configured in a cylindrical shape, and a plurality of the rotating bodies are arranged radially around the drum support shaft. By adopting this configuration, the rotating body is adjusted to the winding length of the power cord. Regardless, the power cord can be arranged to rotate with respect to the winding direction (entry direction). Therefore, it is possible to always obtain good operability (winding and drawing properties) regardless of the length of the power cord being drawn.

  The third invention is characterized in that the outer diameter of the rotating body is made smaller than the wire diameter of the power cord. Like the above invention, the rotational resistance when winding the power cord is reduced, This will reduce the burden and enable long-term use.

  According to a fourth aspect of the present invention, a spiral groove or projection is provided on the rotating body. When the power cord is wound, the power cord is transferred to the inner side (winding drum section side) by utilizing the rotation of the rotating body. A function of assisting the movement of the power cord can be provided such that the cord is pulled out when the cord is pulled out.

  5th invention can suppress contact resistance with the bottom wall of a rotating drum by making the covering cross-sectional shape of a power cord have the convex part of a vertical line.

  6th invention is made into the vacuum cleaner provided with the power cord winding apparatus of any one of 1st-5th invention, and can provide the vacuum cleaner which improved the usability of power cord winding.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, this invention is not limited by this embodiment.

(Embodiment 1)
A power cord winding device and a vacuum cleaner equipped with the power cord winding device according to a first embodiment of the present invention will be described with reference to FIGS.

  Drawing 1 is a top view (a) and a side view (b) of the appearance of the main part of a vacuum cleaner in this embodiment. 2 is a central sectional view of the electric vacuum cleaner, FIG. 3 is a plan view of a power cord winding device as a feature of the present invention, and FIG. 4 is a central sectional view of the same. FIG. 5 is a perspective view of the rotating body, and FIG. 6 shows an external view and a cross-sectional view of the power cord.

  1 and 2, a vacuum cleaner main body 1 (hereinafter referred to as “main body”) is substantially circular, and a traveling wheel and a power cord winding device 3 are provided at the lower portion of the circular main body 1. Yes. The traveling wheel 2 is composed of a center wheel 4 that is rotatable in the traveling direction in the center of the circular main body 1 and five casters that are arranged radially around the center wheel 4 and that are rotatable 360 degrees. Yes. Further, the center wheel 4 is biased downward (toward the traveling surface) by a spring 6. The power cord winding device 3 is disposed at the upper stage of the traveling wheel 2, and the power plug 7 is disposed at the rear portion of the main body 1. Further, a dust collection chamber 9 having a dust bag 8 for storing dust is disposed in the upper stage (upper part of the main body) of the power cord winding device 3, and an electric blower 10 for sucking dust is disposed in the rear. is doing. The dust collection chamber 9 is covered with a dust collection lid 11 that can be freely opened and closed.

  In the operation according to the above configuration, the dust sucked by the electric blower 10 is accommodated in the dust bag 8 in the dust chamber 9. The dust bag 8 can be easily replaced by opening the dust cover 11. As for the main body running, the center wheel 4 arranged at the center of the main body 1 has a function of following the unevenness of the floor surface by the biasing effect of the spring 6. In addition to being installed securely on the floor surface, it can be secured only by rotating in the direction of travel, ensuring straight running stability, or it can be rotated 360 degrees on the spot with the center wheel 4 as the axis of rotation. It is possible to run very smoothly.

  Next, the configuration of the power cord winding device 3 that is a feature of the present invention will be described with reference to FIGS.

  The drum support shaft 12 is fixed below the main body 1 that is concentric with the power cord winding device 3, and the bending restriction rib 15 provided in a circumferential shape for restricting the bending of the bottom wall 14 of the rotating drum 13; A spreading restriction rib 17 that restricts the power cord 16 from spreading out from the bottom wall 14 of the rotary drum 13 is provided to restrict the power cord 16 from escaping downward and outward.

  In addition, a cylindrical rotating body 19 is provided in parallel with the bottom wall 14 of the rotating drum 13 to restrict the upward spread. The rotating body 19 is rotatably supported by a rotating body support shaft 18, and the space between the bottom wall 14 of the rotating drum 13 and the wire diameter of the power cord 16 is constant with a gap of about 20% of the wire diameter. Six are arranged radially with the secured height at the center of the drum support shaft 12. At this time, one end of the rotating body support shaft 18 is fixed to the drum support shaft 12, and the other end is fixed below the main body 1 so as not to be pulled upward in a state where it is bent 90 degrees.

  Further, the length of the rotating body 19 is the length from the inner side of the winding drum portion 20 of the rotating drum 13 to the outer side of the spreading regulating rib 15 below the main body 1 so as to cover the entire winding radius of the power cord 16. have. Further, with respect to the wire diameters φ7.2 mm to φ8.4 mm of the power cord 16, the outer diameter of the rotating body 19 is about φ6 mm, and the outer diameter of the rotating body support shaft 18 is about φ3 mm. As the material of the rotator 19, a material having good slipperiness such as POM or PA is selected, and the rotator support shaft 18 employs a metal shaft such as SUS in order to ensure rigidity.

  Further, the rotary drum 13 is urged to rotate by a mainspring 21 disposed below the rotary drum 13. Similarly, a braking surface protruding in the vertical direction is formed integrally with the rotating drum 13 on the lower side of the rotating drum bottom wall 14, and this braking surface is subjected to rotation restriction by a braking means (FIG. Not shown).

  As an operation in this configuration, when the power cord 16 is pulled out, the rotary spring 13 is rotated, and at the same time, the mainspring 21 is tightened. The power cord 16 can maintain a braking state with an arbitrary length by the braking means. When winding the power cord 16, when the braking means is released, the rotating drum 13 is rotated in the winding direction of the power cord 16 by the restoring force of the spring 21, and the power cord 16 is wound. At this time, while the power cord 16 is repeatedly restricted from contacting the bottom wall 14 of the rotating drum 13 and the rotating body 19 securing a certain space, the power cord 16 is arranged in one step around the winding drum 20 of the rotating drum 13. From outside to outside, it is rolled up tightly. The rotating body 19 rotates and escapes itself so that the winding speed does not decrease even when the power cord 16 comes into contact with the rotating body 19, thereby realizing smooth and reliable operability (drawing and winding properties) of the power cord 16. is doing. Also, by arranging the rotating body in parallel with the bottom wall of the rotating drum, the winding gap of the power cord can be kept constant at all times, and the vertical displacement of the power cord can be suppressed, and the rotating drum and the adjacent power cord The contact resistance can be made substantially the same. As a result, the drawing force when the power cord is pulled out can be stabilized, and the power cord can be pulled out smoothly.

(Embodiment 2)
Next, a second embodiment of the present invention will be described with reference to FIG.

  As shown in FIG. 5, a spiral groove or convex portion 22 is provided on the outer shape of the rotating body 19, and the operation of this configuration is to use the rotation of the rotating body 19 when winding the power cord 16. A function of assisting the movement of the power cord 16 can be provided such that the power cord 16 is transferred to the inner side (winding drum portion side) and sent out to the outer side when the power cord 16 is pulled out, so that the usability can be improved.

(Embodiment 3)
Next, a third embodiment of the present invention will be described with reference to FIG.

  As shown in FIG. 6, the power cord 16 is provided with a thin strip-like convex portion 23 in the longitudinal direction, and the operation in this configuration is performed with the bottom wall 14 of the rotary drum 13 when the power cord 16 is wound. The contact resistance can be reduced, and the torque of the spring 21 necessary for winding the power cord 16 can be reduced. As a result, the pulling force when the power cord 16 is pulled out can be reduced, the operability can be improved, and the mass and price of the mainspring 21 can be reduced.

  As described above, the power cord winding device for a vacuum cleaner according to the present invention is useful as an easy-to-use vacuum cleaner that prevents the cords from overlapping in the device and allows the power cord to be taken in and out smoothly.

(A) The top view of the vacuum cleaner main body external appearance in embodiment of this invention (b) The side view of the vacuum cleaner main body external appearance Central sectional view of the vacuum cleaner Top view of the power cord winder Central cross-sectional view of the power cord winder The perspective view of the rotary body which is 2nd embodiment of the power cord winding device External view and sectional view of a power cord showing a third embodiment of the power cord winding device

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Electric vacuum cleaner body 3 Power supply cord winding device 12 Drum support shaft 13 Rotating drum 16 Power supply cord 19 Rotating body 20 Winding drum part 22 Groove or convex part 23 Convex part

Claims (6)

A winding drum for winding the power cord, a disc-shaped rotating drum for placing the wound power cord, a drum support shaft for rotatably supporting the rotating drum, and the rotating drum sandwiching the power cord A rotating body having a rotating shaft parallel to the rotating drum and rotatably provided in the winding direction of the power cord, and the power cord is horizontally disposed between the rotating drum and the rotating body. A power cord winder that winds in a single spiral. The power cord winding device according to claim 1, wherein the rotating body is formed in a cylindrical shape, and a plurality of the rotating bodies are arranged radially around the drum support shaft. The power cord winding device according to claim 2, wherein the outer diameter of the rotating body is smaller than the wire diameter of the power cord. The power cord winding device according to claim 2, wherein a spiral groove or projection is formed on the surface of the rotating body. The power cord winding device according to claim 1, wherein the covering cross-sectional shape of the power cord has a convex portion of a vertical line. An electric vacuum cleaner comprising the power cord winding device according to any one of claims 1 to 5.

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