JP2006312518A - Cord winder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cord winder capable of pulling out a cord from various places in various arrangement modes by a common part of a simple structure. <P>SOLUTION: This cord winder 20 has a nonrotatable installation shaft 21, a cord reel 22 rotatably supported by the installation shaft 21, a cord 23 wound on the cord reel 22, and a flat spiral spring 25 stored in a flat spiral spring storage recessed place 24 formed on one side surface of the cord reel 22. The flat spiral spring 25 is engaged on the inner end with the installation shaft 21, and is engaged on the outer end with the cord reel 22. Two kinds of engaging parts 29a and 29b adapted to the outer end of the flat spiral spring 25 mutually opposite in the winding direction, are formed in the cord reel 22. The rotational direction of the cord reel 22 by energizing force of the flat spiral spring 25, can be switched by properly using the flat spiral spring 25 different in the winding direction. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a cord winding device used for a vacuum cleaner or the like.

  A vacuum cleaner driven by electric power from a commercial power source instead of a built-in battery needs a long cord to move widely in the room. In order to properly store long cords when not in use, it is common to provide a cord winder that winds the cord with the power of a spring spring in a vacuum cleaner.

Depending on the model of the vacuum cleaner, the position and orientation of the cord winding device vary, and the direction and position of the cord drawing are not fixed. In some cases, it may be necessary to use a spring spring having a reverse winding direction. In view of this, a cord winding device has been proposed in which a cord can be taken out from the upper side or from the lower side while using a shared part. That is described in Patent Document 1.
Japanese Patent Laid-Open No. 11-335006 (pages 4 to 5, FIGS. 1 to 16)

  The cord winding device described in Patent Document 1 changes the connection relationship between the cord reel, the rotating shaft, the spring, and the spring case, and determines whether the rotating shaft or the spring case is non-rotatable. Since the structure is complicated, it is difficult to avoid an increase in parts cost and assembly cost. The present invention has been made in view of this point, and provides a cord winding device that can draw out cords from various locations in various arrangement modes and that can be realized by using a shared component with a simple structure. With the goal.

  (1) In order to achieve the above object, the present invention relates to a mounting shaft that cannot be rotated, a cord reel that is rotatably supported by the mounting shaft, an inner end engaged with the mounting shaft, and an outer end that is A spring that is engaged with a cord reel, and a cord that is wound around the cord reel that is obtained by accumulating the main spring through the rotation of the cord reel when the cord reel is wound and pulled out, and releasing the accumulated force In the cord winding device, the outer end of the mainspring and the engaging portion on the cord reel side for engaging the mainspring are shaped so that they can be engaged only when the winding direction of the mainspring is a specific direction. The cord reel is characterized in that two types of engaging portions are formed that fit the outer ends of the springs whose winding directions are opposite to each other.

  According to this configuration, since the mainspring spring in either winding direction can be engaged with the cord reel, the cord reel can be rotated in either direction by the stored energy of the mainspring spring without touching the parts. In addition, the structure is very simple and there is no fear of failure.

  (2) Further, the present invention is characterized in that the cord winding device having the above-described configuration is used for power supply of a vacuum cleaner.

  According to this configuration, the cord reel biasing rotation direction can be arbitrarily set according to the position where the cord reel is arranged and the position where the cord is pulled out. The take-off device can be made in time with one of the common specifications.

  According to the present invention, it is possible to realize a cord winding device capable of rotating a cord reel in either direction with the spring force of the mainspring with a simple configuration with common parts.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a schematic configuration diagram of a vacuum cleaner. The vacuum cleaner body 10 of the electric vacuum cleaner 1 incorporates an electric blower 11 and has a suction port 12 on the front side. One end of a suction hose 13 is connected to the suction port 12. An intake pipe 14 is connected to the other end of the suction hose 13. The intake pipe 14 has a handle 15 at an end connected to the suction hose 13 and an intake port 16 connected to the other end. A pre-stage dust collection unit 17 and a post-stage dust collection unit 18 are arranged in the air path from the suction port 12 to the electric blower 11. The front dust collection unit 17 captures coarse dust by a cyclone method, and the rear dust collection unit 18 captures fine dust by the filter unit 19.

  When the electric blower 11 is driven, airflow is sucked from the suction port body 16. The airflow enters the pre-stage dust collecting section 17 from the intake pipe 14 through the suction hose 13, where it swirls at high speed to centrifuge the coarse dust. The airflow from which the coarse dust has been separated is captured by the filter unit 19 of the post-stage dust collecting section 18, and then sucked into the electric blower 11 and discharged from an exhaust port (not shown) provided in the cleaner body 10. When dust accumulates in the container of the pre-stage dust collecting section 17, the container is taken out and discarded. When the filter unit 19 in the subsequent dust collecting section 18 is clogged, the filter unit 19 is taken out to eliminate the clogging.

  Inside the vacuum cleaner main body 10, a cord winding device 20 that winds a cord that supplies power to the electric blower 11 is arranged in line with the electric blower 11. First, the structure of the conventional cord winding device will be described with reference to FIGS.

  The cord winding device 20 shown in FIG. 9 includes four main parts. The first is a mounting shaft 21 that is non-rotatably held by the cleaner body 10, the second is a cord reel 22a that is rotatably supported by the mounting shaft 21, and the third is a cord 23 that is wound around the cord reel 22a. No. 4 is a spring spring 25 housed in a spring spring housing recess 24 formed on one side surface of the cord reel 22a. The mainspring 25 has an inner end engaged with the mounting shaft 21 and an outer end engaged with the cord reel 22a. In addition, the cord winding device 20 also includes a combination of a slip ring and a brush for extracting the current supplied through the cord 23, and a brake device for stopping the winding rotation of the cord reel 22a. Is omitted.

  As shown in FIG. 9, the main spring 25 has an inner end bent at a right angle, and the bent portion 26 is engaged with the slit 27 of the mounting shaft 21. A U-shaped hook portion 28 is formed at the outer end of the mainspring 25, and this hook portion 28 is engaged with a nose-shaped engaging portion 29 a formed at one location of the mainspring spring housing recess 24. Yes. As shown in FIG. 11, the winding direction of the spring spring 25 is clockwise when the hook portion 28 is the starting point. For this reason, when the cord reel 22a is rotated counterclockwise, the restoring energy is stored in the mainspring spring 25. If the brake of the cord reel 22a is released when the restoring energy is stored in the mainspring 25, the mainspring 25 rotates the cord reel 22a in the clockwise direction by the stored power, and the cord 23 is wound around the cord reel 22a. become.

  If the winding direction of the mainspring 25 is as described above and the mounting shaft 21 is disposed horizontally, the pulling direction of the cord 23 for accumulating in the mainspring 25 is indicated by an arrow i or an arrow in FIG. It becomes like b.

  If the cord reel 22a can be turned over as it is, the cord 23 can be pulled out in the direction symmetrical to the arrow a and the cord 23 can be pulled out in the direction symmetrical to the arrow b. However, a combination of a slip ring and a brush is placed on one side of the cord reel 22a (the side opposite to the side where the spring spring housing recess 24 is located). If the cord reel 22a is turned over, it is necessary to review all the design of the power supply system. This strategy is not feasible. Therefore, the configuration of the cord reel winding device 20 can be seen in FIGS. 13 to 15 so that the cord 23 can be pulled out in the left-right symmetric direction with the arrow A and in the left-right symmetric direction with the arrow B.

  The cord winding device 20 shown in FIG. 13 has a cord reel 22b having a structure different from that of the cord reel 22a. That is, the cord reel 22b is formed with an engaging portion 29b in which the nose protruding direction is opposite to the engaging portion 29a with respect to the reel rotating direction. Even if the hook portion 28 of the mainspring 25 is to be engaged with the engaging portion 29b, the hook portion 28 cannot be engaged with the orientation of FIG. 11 as it is. As shown in FIG. 14, it is necessary to reverse the front and back of the mainspring 25 and change the direction of the hook portion 28. That is, the hook portion 28 can be engaged with the engaging portion 29a of the cord reel 22a only when the winding direction of the mainspring 25 is the direction of FIG. 11, and the winding direction of the mainspring 25 is engaged with the engaging portion 29b of the cord reel 22b. Can be engaged only when is in the direction of FIG.

  In FIG. 14, the winding direction of the mainspring 25 is counterclockwise when the hook portion 28 is the starting point. For this reason, when the cord reel 22b is rotated clockwise, the restoring energy is stored in the mainspring 25. When the brake of the cord reel 22b is released when the restoring energy is stored in the mainspring 25, the mainspring 25 rotates the cord reel 22a counterclockwise by the stored power, and the cord 23 is wound around the cord reel 22a. It will be.

  Assuming that the winding direction of the mainspring 25 is as described above and the mounting shaft 21 is horizontally disposed, the pulling direction of the cord 23 for storing energy in the mainspring 25 is shown in FIG. It becomes like arrow D. The arrow c is in the left-right symmetric direction with respect to the arrow a in FIG.

  The present invention is characterized in that a cord reel 22 having a structure shown in FIG. That is, the cord reel 22 includes the engaging portion 29a of the cord reel 22a in FIG. 12 and the engaging portion 29b of the cord reel 22b in FIG.

  In this manner, the cord reel 22 is formed with two types of engaging portions 29a and 29b that fit the outer ends of the spring springs 25 whose winding directions are opposite to each other. Accordingly, the mainspring spring 25 in the winding direction of FIG. 11 can be stored in the mainspring storage recess 24 and the hook 28 can be engaged with the engaging portion 29a, and the mainspring spring 25 in FIG. It can also be used by being housed in the place 24 and engaging the hook 28 with the engaging portion 29b. In the former case, when the cord reel 22 is rotated counterclockwise, restoring energy is stored in the mainspring spring 25. The pulling direction of the cord 23 that meets this condition is the arrows a and b. In the latter case, restoring energy is stored in the mainspring 25 when the cord reel 22 is rotated clockwise. The direction of pulling out the cord 23 that meets this condition is arrows C and D.

  What is meant by the above is that the cord winding device 20 including the cord reel 22 as a constituent element has the cord spring from the lower side and the upper side regardless of whether the mainspring spring recess 24 faces the left or right of the cleaner body 10. This means that you can select the code drawer. That is, when the electric blower 11 is disposed on the right side and the cord winding device 20 is disposed on the left side as in the configuration of FIG. 3, and the spring spring housing recess 24 faces the left side, the spring spring 25 in the winding direction of FIG. For example, the cord outlet 30 of the vacuum cleaner main body 10 is formed on the lower side as seen in FIG. 4. If the mainspring 25 in the winding direction of FIG. It will be formed on the upper side as seen. Further, when the electric blower 11 is arranged on the left side and the cord winding device 20 is arranged on the right side as in the configuration of FIG. 6 and the spring spring housing recess 24 faces the right side, the spring spring 25 in the winding direction of FIG. 14 is used. For example, the cord outlet 30 of the vacuum cleaner main body 10 is formed on the lower side as seen in FIG. 7, and the cord outlet 30 is shown in FIG. It will be formed on the upper side as seen.

  In this way, since the mainspring 25 in either winding direction can be engaged with the cord reel 22, the cord reel 22 can be rotated in either direction by the stored energy of the mainspring 25 without changing the parts. it can.

  As for the winding direction of the mainspring 25, since the right-handed spring can be turned over and used as a left-handed spring, the single spring 25 can be used as the cord winding device 20 of FIG. 3 as well as the cord winding device of FIG. 20 can also be used. That is, the mainspring 25 can be positioned as a component having versatility.

  Although the embodiments of the present invention have been described above, the scope of the present invention is not limited to these embodiments, and various modifications can be made without departing from the spirit of the invention.

    The present invention can be widely used for a cord winding device used in a vacuum cleaner or the like.

Schematic configuration diagram of a vacuum cleaner Front view of cord reel Top view of the vacuum cleaner body showing an arrangement example of the cord winding device The rear view which shows the example of arrangement | positioning of the cord outlet of the cleaner body of FIG. The rear view which shows the example of a different arrangement | positioning of the cord outlet of the cleaner body of FIG. Top view of the vacuum cleaner body showing another arrangement example of the cord winding device The rear view which shows the example of arrangement | positioning of the cord outlet of the cleaner body of FIG. The rear view which shows the example of a different arrangement | positioning of the cord outlet of the cleaner body of FIG. Front view of a conventional cord winder AA sectional view of FIG. Front view of mainspring Front view of cord reel Front view of another conventional cord winding device Front view of mainspring Front view of cord reel

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Electric vacuum cleaner 10 Vacuum cleaner main body 11 Electric blower 13 Suction hose 14 Intake pipe 16 Suction inlet body 17 Pre-stage dust collection part 18 Rear-stage dust collection part 20 Cord winding device 21 Mounting shaft 22 Code reel 23 Code 24 Spring spring accommodation recess 25 Spring spring 26 Bending part 28 Hook part 29a, 29b Engagement part

Claims (2)

A non-rotatable mounting shaft, a cord reel rotatably supported by the mounting shaft, a spring spring having an inner end engaged with the mounting shaft and an outer end engaged with the cord reel, and the cord reel A cord winding device comprising: a cord that is wound by cord reel rotation obtained by accumulating the spring spring through cord reel rotation when being wound and pulled out, and releasing the accumulated force;
The outer end of the mainspring and the engaging portion on the cord reel side that engages the outer spring are shaped so that they can only be engaged when the winding direction of the mainspring is a specific direction, and the winding direction of the cord reel is A cord winding device characterized in that two types of engaging portions adapted to the outer ends of opposite spring springs are formed.   The cord winding device according to claim 1, wherein the cord winding device is used for power supply of a vacuum cleaner.

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