JP2007089249A - Electric apparatus and stirrer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electric apparatus for disposing a mechanically rotated rotor opposite to a rotor driver for driving the rotor through a partition. <P>SOLUTION: The electric apparatus is provided with a rotor holder, and the rotor driver facing the rotor holder through a gap. The rotor holder is provided with a turntable turned in response to a displacement of a rotational magnetic field, and a rotating shaft of the turntable. The rotor driver generates the rotational magnetic field having the rotational center at the rotating shaft of the facing turntable. The electric apparatus is preferable for a driving system of a stirrer. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an electric device capable of facing a rotor and a rotor driving unit that drives the rotor with a gap therebetween. Furthermore, the present invention relates to a stirrer using this electric apparatus.

  As the interior finish of the building, sheet-like wall coverings made of various materials, so-called wallpaper, are affixed to the wall surface. Normally, the wallpaper is applied at the site by applying glue on the back side of the wallpaper and then sticking to the wall surface in sequence. Conventionally, a wallpaper pasting machine has been used for applying glue to wallpaper. This wallpaper gluing machine has multiple rolls and glue in the main body, and the wall covering material drawn from the back of the main body is fed forward with various internal rolls, while the back surface of the wall covering material is brought into contact with the gluing roll in the middle By applying the paste, paste of glue paste is applied.

  The glue applied to the wall covering is also adjusted on site and supplied to the wallpaper pasting machine. Generally, paste-like paste is dissolved in a medium such as water in a container and stirred to adjust to an appropriate concentration.

  For stirring in such glue adjustment, one end of a shaft having a stirring blade at the other end is fastened and attached to the chuck portion of a hand-held electric drill, and stirring is performed in the container by driving the shaft of the electric drill. What rotates a blade | wing and stirs paste is used in many cases as a simple stirrer. (See Patent Document 1)

  As another conventional glue liquid adjusting device, as shown in FIG. 4, a rotating shaft 45 with a stirring blade 46 is provided on the bottom surface of a container 44 that holds glue material and water. A stirrer 40 that adjusts glue by rotating a stirring blade 46 of a rotary shaft 45 via a gear 43, a belt, and the like with an electric motor 42 disposed in a lower base 41 is already on the market.

JP2003-210964A

  However, in the agitating device described above, the shielding effect of the O-ring and rubber packing that shields is remarkably reduced, and the paste liquid of the object to be agitated may leak from the shielding portion between the rotating shaft and the container. It was. This is because when the inside of the container is dried without being sufficiently washed after use, the O-ring and the rubber packing are also contracted due to the shrinkage accompanying the drying of the paste adhering to the shield portion between the rotating shaft and the container, and the rotating shaft This is because the paste liquid leaks from the shield portion between the container and the container.

  Leakage of glue liquid from the container to the inside of the base blocks the meshing of gears and belts, causing malfunctions. In the worst case, it may cause an accident of short circuit of electric drive system such as electric motor. . Therefore, it is possible to consider a drive source disposed above the container. However, the center of gravity of the device itself becomes high, and there is a disadvantage that the stability is lacking. In addition, if the base itself is made heavy in consideration of stability, the device itself becomes heavy in combination with the upper drive source, which may hinder the arrangement on the site.

  Furthermore, in the mechanism that transmits the rotation of the electric motor to the stirring blade via a gear or a belt, noise during driving increases.

  In the present invention, a rotor that mechanically rotates and a rotor driving unit that drives the rotor can be arranged with a partition wall or the like interposed therebetween, so that a gap is formed between the rotor and the rotor driving unit that drives the rotor. It is an object to obtain an electric device that can be opposed to each other. Furthermore, it is an object of the present invention to obtain a stirrer using this electric apparatus, in which an object to be stirred does not leak from the container, and there is no fear of malfunction due to driving of the gear or noise.

The electric device according to the invention described in claim 1 is an electric device in which the rotor holding portion and the rotor driving portion can be opposed to each other with a gap therebetween,
The rotor holding unit includes a turntable that rotates according to the displacement of the rotating magnetic field, and a rotation shaft of the turntable;
The rotor driving unit generates a rotating magnetic field having a rotation center on a rotating shaft of the turntable facing the rotor driving unit.

According to a second aspect of the present invention, there is provided an electric device according to the first aspect, in which the rotor driving unit according to the first aspect has a coil group in which a large number of coils are arranged substantially concentrically facing the turntable, and a large number of coils. An induction magnetic field control means for inductively controlling the rotating magnetic field by controlling energization of each of
Each coil of the coil group is arranged in a direction for generating an induction magnetic field facing the turntable.
According to a third aspect of the present invention, there is provided the electric device according to the first aspect, wherein the turntable according to the first or second aspect includes a magnet portion in which N poles and S poles are alternately arranged along a circumference of the table. It is characterized by this.

A stirrer according to the invention described in claim 4 is a stirrer using the electric device according to any one of claims 1 to 3,
A brazing material that holds the stirring object inside,
A stirrer holding unit provided with a stirring blade on a rotation shaft of the rotor holding unit held at a predetermined position inside the brazing material;
A stirrer driving unit for generating a rotating magnetic field for rotating the turntable of the rotor holding unit is provided outside the brazing material facing the stirrer holding unit.

The stirrer according to the invention described in claim 5 is a stirrer drive unit according to claim 4 in which a rotating magnetic field having a rotation center in the region of the center portion of the bottom surface is opposed to the outside of the bottom surface of the brazing material. Is generated,
The stirrer holding portion is held inside the bottom surface of the brazing material.

The stirrer according to the invention described in claim 6 is a cover body in which the stirrer holding portion according to claim 4 or 5 holds the turntable and a bearing that pivotally supports the turntable in a watertight state, Provided with shielding means to prevent water intrusion from the rotating shaft protruding from the center of the turntable to the outside of the cover body,
It is arranged detachably in the saddle material.

  In the present invention, since the rotor and the rotor driving unit that drives the rotor can be opposed to each other with a gap, the mechanically rotating rotor and the rotor driving unit that drives the rotor are sandwiched by a partition wall or the like. It is possible to obtain an electric device that can be arranged with. Furthermore, using this electric device, there is an effect that an agitator can be obtained in which there is no fear that the object to be agitated leaks out of the container, and there is no fear of malfunction due to driving of the gear or noise.

  In the present invention, the rotor holding unit and the rotor driving unit are electric devices capable of facing each other with a gap therebetween, and the turn table in which the rotor holding unit rotates according to the displacement of the rotating magnetic field and the turn table A rotating magnetic field having a rotation center on the rotating shaft of the turntable opposed to the rotor driving unit. Therefore, a gap is provided between the rotor and the rotor driving unit that drives the rotor. It is possible to obtain an electric device that can be opened and faced and can arrange a mechanically rotating rotor and a rotor driving unit that drives the rotor with a partition wall or the like interposed therebetween.

  The rotor holding part of the present invention may be provided with a turntable that rotates in accordance with the displacement of the rotating magnetic field and a rotating shaft of the turntable, and there is no electrical connection. Therefore, the rotor holder itself can be used without any problem in high humidity and water, and can be used in various environments.

  The rotor driving unit may be any unit that generates a rotating magnetic field having a rotation center on the rotation axis of the turntable of the opposing rotor holding unit. For example, a large number of permanent magnets with the direction of the magnetic field facing the turntable may be arranged concentrically on the disk, and this disk may be rotated by an electric motor. More preferably, the rotor drive unit is turned. A coil group having a large number of coils arranged substantially concentrically facing the table, and induction magnetic field control means for controlling the conduction of the rotating magnetic field by controlling the energization of each of the many coils, and each of the coil groups The coil is arranged in a direction for generating an induction magnetic field facing the turntable. As a result, there is substantially no drive system that rotates in the rotor drive unit, so that there is no noise in the rotor drive unit itself, and an electric device with less noise can be obtained.

  As the induction magnetic field control means, the power supplied to each coil may be inverter-controlled. Normal inverter control includes rectangular wave drive and sine wave drive, and either drive may be used.

  The turntable of this invention should just turn in response to the displacement of a rotating magnetic field in opposition to the induction magnetic field generated by each coil of the coil group. Therefore, if it can be magnetically attracted, it rotates according to the displacement of the rotating magnetic field. As a more preferable aspect, a magnet portion in which N poles and S poles are alternately arranged along the circumference of the table is provided so that torque loss according to the displacement of the rotating magnetic field is small. A magnet that generates a strong magnetic field is preferable in terms of torque, and for example, neodymium, Samakoba rare earth magnets, ferrites, and the like are used.

  In the electric device of the present invention, as described above, the rotor holding part itself can be used without any problem even in high humidity and water, and the rotating drive system is substantially used for the rotor driving part. Therefore, there is no noise in the rotor drive unit itself. Therefore, it is suitable as a drive system for a stirrer.

  The stirrer of the present invention is a stirrer using the above-mentioned electric device, and the rotation of the brazing material that holds the object to be stirred inside, and the rotor holding portion that is held at a predetermined position inside the brazing material. A stirrer holding part having a stirring blade on the shaft and a stirrer driving part for generating a rotating magnetic field for rotating the turntable of the rotor holding part outside the brazing material facing the stirrer holding part. Thereby, there is no possibility that the stirred object leaks from the container holding the stirred object, and there is no worry about malfunction due to driving of the gear and noise.

  That is, in the stirrer of the present invention, as a drive system, the stirrer holding part provided with the stirrer and the stirrer driving part for driving the stirrer are separated, and the stirrer holding part holds the object to be stirred. The stirrer driving unit that drives the stirrer of the drive holding unit is disposed outside the brazing material. Furthermore, the stirrer is driven by the stirrer driving unit by generating a rotating magnetic field against the turntable of the stirrer holding unit and rotating the turntable of the stirrer holding unit. For this reason, there is no need to provide a drilling hole in the brazing material that holds the agitated material, so that the agitated material does not leak from the container that holds the agitated material, and there is a risk of malfunction due to driving the gear and noise. Absent.

  The stirrer drive unit of the present invention is preferably arranged so as to face the bottom surface of the brazing material and generate a rotating magnetic field having a rotation center in the central region of the bottom surface of the brazing material. As described above, it is preferable that the stirrer driving unit has a coil group in which a large number of coils are arranged substantially concentrically in the base so as to face the bottom surface of the brazing material, and a rotating magnetic field is controlled by controlling energization of each of the many coils. And an induction magnetic field control means for inductively controlling the coil, wherein each coil of the coil group is arranged in a direction to generate an induction magnetic field that opposes the turntable of the stirring bar holding portion. As a result, since the rotating drive system substantially does not exist in the stirrer drive unit, a stirrer that is free from noise concerns can be obtained.

  As the stirrer holding part of the present invention, a turntable which is held inside the brazing material and rotates according to the displacement of the rotating magnetic field, and a stirrer arranged on the rotating shaft of the turntable. It only has to be provided. More preferably, the stirrer holding portion has a cover body that holds the turntable and a bearing that pivotally supports the turntable in a watertight state, and a rotating shaft that protrudes outward from the center of the turntable. Shielding means for preventing intrusion of water from the water is provided, and is detachably disposed in the saddle material. As a result, cleaning of the apparatus after use is sufficient only by the stirring bar holding part, and there is an advantage that the maintainability of the stirring bar holding part is improved. Even if the shield means of the stirrer holding part is broken, the stirrer only needs to enter the stirrer holding part, and does not affect the stirrer driving part that causes a problem when it leaks electrically.

  The stirring bar of this invention should just be what mixes the to-be-stirred object hold | maintained in the eaves by rotation. It refers to a member in which a plurality of plate-like or bar-like members are evenly arranged around the rotation axis. In addition, a plate-shaped member contains what was distribute | arranged horizontally, perpendicularly | vertically, diagonally or curved with respect to the rotation direction, and includes what bent the front-end | tip part. The rod-shaped members include those arranged at right angles to and inclined with respect to the rotation axis, and those obtained by bending the tip portion.

  The brazing material of the present invention is a material that holds the object to be stirred inside, and that allows the displacement of the external rotating magnetic field to pass through the internal turntable well, and the liquid inside leaks out. Anything that doesn't exist. More preferably, the distance between the coil group of the stirrer driving unit inside the base and the turntable of the stirrer holding unit is made as small as possible to reduce torque loss. What is necessary is just to give the corresponding bottom face shape. Therefore, a resin container is selected. Preferably, when a ferrite magnet is used, the distance between the magnet and the coil does not exceed 8.5 mm.

  Stirred objects in the stirrer of the present invention generally include those from powders and granules that are not likely to leak to liquids that normally require various measures to prevent leakage. It can correspond to. In particular, it is necessary to use an O-ring or a rubber packing that is hard to be shrunk by the drying of the paste and hinders the shielding ability even in the stirring of the paste material and water that solidifies and causes various harmful effects when dried as an object to be stirred. Therefore, there is no possibility that the liquid inside leaks out of the brazing material.

  The paste material in this case includes not only starch paste but also synthetic resin adhesive such as vinyl acetate resin or acrylic resin adhesive that can be dissolved and adjusted with water, such as starch paste. In addition, not only alone but also a mixture of two or more.

  FIG. 1 is an explanatory view illustrating the configuration of an embodiment of the stirrer of the present invention. FIG. 2 is an explanatory view for explaining the configuration of a drive coil group disposed in the base of FIG. FIG. 3 is an explanatory diagram for explaining the configuration of a turntable disposed in the stirring drive unit of FIG.

  As shown in the figure, the stirrer 10 of the present embodiment includes a plastic cage 11 that holds water and a paste material therein, and a base 12 that abuts against and supports the bottom surface of the cage 11. Become. A stirrer holding portion 13 is detachably disposed on the bottom surface inside the brazing material 11.

  The stirrer holding unit 13 includes a turntable 14, a stirrer 16 disposed on a rotating shaft 15 of the turntable 14, and bearings 17 and 18 as bearings for rotatably holding the turntable 14. A cover body 19 that is kept in a watertight state, and two O-rings 20 as shielding means for preventing water from entering from the rotary shaft 15 that protrudes outward from the center of the turntable 14 to the cover body 19. I have.

  As shown in FIG. 3, 24 neodymium rare earth magnets 30 are arranged on the turntable 14 along the circumference of the table 14 so that N poles and S poles are alternately magnetic fields orthogonal to the table surface. Has been.

  Inside the base 12, a stirrer drive unit 21 is disposed that generates a rotating magnetic field that faces the bottom surface of the brazing material and has a rotation center in a central region of the bottom surface. The stirrer drive unit 21 controls the induction of the rotating magnetic field by controlling the energization of each of the coil group 22 in which a large number of coils 23 are arranged substantially concentrically facing the bottom surface of the brazing material 11 and the large number of coils 23. Inductive magnetic field control means 24 is provided.

  The induction magnetic field control unit 24 sequentially shifts the polarity of the generated magnetic field by sequentially switching the polarity by inverter-controlling the electric power supplied to the individual coils 23. The sequentially displaced rotating magnetic field rotates the turntable 14 by the magnetic attractive force and repulsive force acting on the individual magnets 30 of the turntable 14. The rotating shaft 15 and the stirrer 16 are rotated by the rotation of the turntable 14 to stir the glue material and water inside the padding material 11.

  Since the stirring bar holding part 13 is detachably arranged with respect to the brazing material 11, only the stirring bar holding part 13 and the brazing material 11 are sufficient for cleaning the apparatus after use, and the stirring bar holding part 13 is maintained. There is an advantage that the property is improved. Further, even if the shield of the stirrer holding part 13 is broken, the paste liquid only needs to enter the stirrer holding part 13 and does not affect the stirrer driving part 21 which causes a problem when it leaks electrically. . Furthermore, by arranging a large number of commercially available buckets or the like as the brazing material 11 and replacing the internal stirring bar holding portion 13, it is possible to perform continuous stirring work according to the number of the brazing material 11. Prepare.

It is explanatory drawing explaining the structure of one Example of the stirrer of this invention. It is explanatory drawing explaining the structure of the drive coil group arrange | positioned inside the base of FIG. 1, a figure is a top view and b figure is a front view. It is explanatory drawing explaining the structure of the turntable arrange | positioned inside the stirring drive part of FIG. 1, a figure is a top view and b figure is a front view. It is explanatory drawing explaining the structure of the conventional glue liquid adjustment apparatus.

Explanation of symbols

10: Stirrer,
11 ...
12 ... the base,
13: Stirring bar holding part,
14 ... Turntable,
15 ... rotating shaft,
16: Stir bar,
17 ... Bearing,
18 ... bearings,
19 ... Cover body,
20 ... O-ring,
21 ... Stirring element drive unit,
22 ... Coil group,
23 ... Coil,
24. Inductive magnetic field control means,
30 ... Magnet,

Claims (6)

An electric device in which the rotor holding part and the rotor driving part can be opposed to each other with a gap between them,
The rotor holding unit includes a turntable that rotates according to the displacement of the rotating magnetic field, and a rotation shaft of the turntable;
An electric device characterized in that a rotor drive unit generates a rotating magnetic field having a rotation center on a rotating shaft of the turntable facing the rotor driving unit. A coil group in which a large number of coils are arranged substantially concentrically facing the turntable, and a magnetic field control means for guiding and controlling the rotating magnetic field by controlling energization of each of the large number of coils. And
2. The electric device according to claim 1, wherein each coil of the coil group is arranged in a direction in which an induction magnetic field facing the turntable is generated.   The electric device according to claim 1, wherein the turntable includes a magnet unit in which N poles and S poles are alternately arranged along a circumference of the table. A stirrer using the electric device according to any one of claims 1 to 3,
A brazing material that holds the stirring object inside,
A stirrer holding unit provided with a stirring blade on a rotation shaft of the rotor holding unit held at a predetermined position inside the brazing material;
An agitator comprising: a stirrer driving unit that generates a rotating magnetic field that rotates the turntable of the rotor holding unit outside the brazing material facing the stirrer holding unit. The stirrer driving unit generates a rotating magnetic field that faces the outside of the bottom surface of the brazing material and has a center of rotation in the central region of the bottom surface,
The stirrer according to claim 4, wherein the stirring bar holding portion is held inside the bottom surface of the brazing material. The stirrer holding portion prevents water from entering from a cover body that holds the turntable and a bearing that supports the turntable in a watertight state, and a rotary shaft that protrudes outward from the center of the turntable. A shielding means for
The stirrer according to claim 4 or 5, wherein the stirrer is detachably disposed in the paddle material.

Images