JP2009239986A - Coil bobbin and rotating machine using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent the breakdown due to the vibration or shock of teeth made of dust. <P>SOLUTION: A coil bobbin 141 for a rotating machine 100, which has joints 143-146 which contact other coil bobbins 141, mounted on adjacent teeth 133 and which are to be integrated with other coil bobbins 141 by the joints 143-146, is used. As a result, the vibration of the teeth 133 is suppressed by the integrated coil bobbins 141, therefore the breakdown is prevented which is due to the vibration or shock of the teeth 133 made of dust. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a coil bobbin and a rotating machine using the same, and more particularly to a coil bobbin suitable for preventing damage to teeth of a stator core provided in the rotating machine and a rotating machine using the same.

  In a rotating machine such as a motor or a generator, a stator core having a plurality of teeth is used, and a coil bobbin around which a coil is wound is attached to each tooth.

Patent Documents 1 and 2 disclose examples of teeth. The “saliency pole” in Patent Document 1 and the “tooth portion” in Patent Document 2 correspond to the teeth.
Japanese Utility Model Publication No. 03-45049 Japanese Patent Publication No. 05-34894

  By the way, in recent years, powder of a soft magnetic metal material has begun to attract attention as a material for iron cores of motors and generators. This is because the use of compacted powder can be expected to reduce loss due to eddy currents, the productivity and recyclability will be good, and the three-dimensional structure can be easily manufactured. The strength is not so strong, and the teeth may be broken (broken) by vibration caused by rotation or an impact applied by the equipment to be attached.

  Therefore, the subject of this invention is providing the coil bobbin which can prevent the damage | damage by the vibration and the impact of the teeth which were made from the compact, and a rotary machine using the same.

  The coil bobbin according to the present invention is a coil bobbin for a rotating machine that has a joint portion that comes into contact with another coil bobbin mounted on an adjacent tooth and is integrated with the other coil bobbin by the joint portion. The rotating machine according to the present invention includes the coil bobbin.

  According to the present invention, the vibration of the teeth can be suppressed by the integrated coil bobbin, so that it is possible to prevent the teeth made of compacted powder from being damaged by vibration or impact.

  In the coil bobbin, the joint portion may have a fitting convex portion or a fitting concave portion, and the fitting convex portion or the fitting concave portion may be fitted with a fitting concave portion or a fitting convex portion provided in the other coil bobbin, respectively. preferable. According to this, it becomes possible to prevent more reliably damage by the vibration and impact of the teeth made of compacted powder.

  In each of the coil bobbins, it is preferable that the joint portion is provided at least on the rotor side edge of the coil bobbin. This also makes it possible to more reliably prevent damage caused by vibration and impact of the teeth made of compacted powder.

  Thus, according to the present invention, it is possible to prevent damage caused by vibration or impact of the teeth made of compacted powder.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 is a schematic exploded perspective half sectional view showing an outer shape and structure of a rotating machine 100 according to a preferred embodiment of the present invention. As shown in the figure, the rotating machine 100 is a so-called axial type rotating machine, and includes a shaft 110 and a rotor 120 that are rotatable in the X direction shown in the figure, a stator core 130 that is fixed to a support member (not shown) and does not rotate. And a coil bobbin group 140 fitted to the stator core 130. For example, the rotating machine 100 may be a small portable generator.

  The rotor 120 is a disk-shaped member having a main surface perpendicular to the X direction (rotation direction), and has a through-hole 121 fitted to the shaft 110 at the center of the main surface. When the shaft 110 is fitted with the penetration part 121, the rotor 120 rotates together with the shaft 110.

  The main surface of the rotor 120 is opposed to the stator core 130 through a minute gap. In addition, a plurality of permanent magnets 122a and 122b (shown in a sectional view and a perspective view in FIG. 1) are arranged on the main surface of the rotor 120. The permanent magnets 122a and 122b are installed such that the surfaces on the stator core 130 side are the north and south poles, respectively, and are alternately arranged in the circumferential direction of the main surface of the rotor 120. As a result, N and S poles appear alternately in the circumferential direction of the main surface of the rotor 120.

  The stator core 130 has a donut-shaped core 132 made of powder of soft magnetic metal material on the surface of the relatively thin disk-shaped support member 131 facing the rotor 120. The core 132 has a plurality of (here, 12) teeth 133 protruding toward the rotor 120 side. The teeth 133 have the same shape and are arranged at equal intervals in the circumferential direction of the surface of the core 132 facing the rotor 120.

  The coil bobbin group 140 includes one coil bobbin 141 for each tooth 133, and each coil bobbin 141 is attached to the corresponding tooth 133.

  FIG. 2 is a view showing the coil bobbin group 140 attached to each tooth 133. Each coil bobbin 141 can be individually disassembled before being attached to each tooth 133, and the coil 150 can be wound by automatic winding in the disassembled state. Therefore, the coil 150 is wound around each coil bobbin 141 by automatic winding before being attached to the teeth 133, and each coil bobbin 141 is thereafter attached to the corresponding tooth 133 as shown in FIG.

  Each coil bobbin 141 has a through portion 142 (see FIG. 1) shaped to fit with the tooth 133. When the coil bobbin 141 is attached to the tooth 133, the coil bobbin 141 is fitted with the tooth 133 through the through portion 142. Further, the height of each coil bobbin 141 is the same as the height of each tooth 133, and when mounted on the tooth 133, the upper surface of the tooth 133 and the upper surface of the coil bobbin 141 are flush with each other as shown in FIG. Become.

  Each coil bobbin 141 has joint portions 143 to 146 that come into contact with other coil bobbins 141 attached to adjacent teeth 133. When the coil bobbins 141 are attached to the teeth 133, the other coil bobbins are connected by the joint portions 143 and 144. 141. The joint portions 143 and 144 are joint portions provided at the edge of the coil bobbin 141 on the rotor 120 side, and the joint portions 145 and 146 are joint portions provided at the opposite edge portion.

  As a result of integration by the joint portions 143 to 146, the coil bobbins 141 constituting the coil bobbin group 140 are solidified to each other. As a result, vibrations and impacts of the teeth 133 fitted to the coil bobbin group 140 are suppressed, and damage due to vibrations and impacts of the teeth 133 made of compacted powder can be prevented. Hereinafter, the details of the joint parts 143 to 146 will be described.

  3A is a plan view of the coil bobbin group 140 viewed from the rotor 120 side, and FIG. 3B is a plan view of the coil bobbin group 140 viewed from the opposite side.

  As shown in FIGS. 3A and 3B, the joint portions 143 and 145 have fitting convex portions 143a and 145a, respectively, and the joint portions 144 and 146 have fitting concave portions 144a and 146a, respectively. The fitting convex portion 143a and the fitting concave portion 144a, the fitting convex portion 145a and the fitting concave portion 146a are shaped to fit each other. When each coil bobbin 141 is mounted on the tooth 133, the fitting convex portion is located between the adjacent coil bobbins 141. The adjacent coil bobbins 141 are integrated with each other by fitting the fitting recesses with each other.

  In addition, the shape of each fitting convex part and each fitting recessed part is not restricted to the shape shown in FIGS. 1-3, What kind of shape may be sufficient if it is the shape which can integrate adjacent coil bobbins 141 mutually.

  4A to 4D are diagrams showing various examples of the shape of the fitting convex part and the fitting concave part. 4 (a) to 4 (d) show only the joint portions 143 and 144, the same applies to the joint portions 145 and 146.

  FIG. 4A is the same as that shown in FIGS. In this example, the fitting convex part 143a has a substantially trapezoidal shape, and the upper base is located on the joint part 143 side.

  In the example of FIG. 4B, the joint portions 143 and 144 each have a fitting concave portion 143b and a fitting convex portion 144b, which are substantially rectangular.

  In the example of FIG. 4C, the joint portion 143 has a fitting concave portion 143c and a fitting convex portion 143d, and the joint portion 144 has a fitting convex portion 144c and a fitting concave portion 144d, and the fitting concave portion 143c and the fitting convex portion 144c. The fitting convex part 143d and the fitting concave part 144d are respectively fitted. Each fitting convex part and each fitting concave part have a substantially circular shape with a part cut away.

  In the example of FIG. 4D, the joint portion 143 has fitting convex portions 143e and 143g and fitting concave portions 143f and 143h, and the joint portion 144 has fitting concave portions 144e and 144g and fitting convex portions 144f and 144h. The fitting convex portion 143e and the fitting concave portion 144e, the fitting concave portion 143f and the fitting convex portion 144f, the fitting convex portion 143g and the fitting concave portion 144g, and the fitting concave portion 143h and the fitting convex portion 144h are fitted. Each fitting convex part and each fitting concave part are substantially rectangular. The fitting convex part 143g has a shape protruding in the radial direction from the tip of the fitting convex part 143e via the fitting concave part 143h.

  As described above, there are various options for the shape of the fitting convex portion and the fitting concave portion, but any shape may be used as long as the adjacent coil bobbins 141 can be integrated. In the integration, it is preferable to provide a fitting convex part and a fitting concave part so that the adjacent coil bobbins 141 are fitted to each other so as not to be displaced in the radial direction. In any of the joint portions 143 and 144 shown in FIGS. 4A to 4D, the fitting convex portions and the fitting concave portions cause radial and circumferential shifts (the center of the circle, the outward shift and the concentric circles). The occurrence of heading deviation is hindered. By preventing the circumferential and radial displacement in this way, it is possible to effectively prevent the teeth 133 from being damaged by vibration or impact.

  Finally, the operation of the rotating machine 100 will be described. First, when a current is supplied to each coil 150 while appropriately switching the direction, a rotating magnetic field is generated in the stator core 130, and the rotor 120 and the shaft 110 rotate so as to follow the rotating magnetic field. Thereby, the rotating machine 100 functions as a motor.

  On the other hand, when the shaft 110 is rotated by an external force, a current flows through each coil 150 by electromagnetic induction. Thereby, the rotating machine 100 also functions as a generator.

  As mentioned above, although preferable embodiment of this invention was described, this invention is not limited to such embodiment at all, and this invention can be implemented in various aspects in the range which does not deviate from the summary. Of course.

  For example, in the above embodiment, the joint portion is provided on both the rotor side edge portion and the opposite side edge portion of the coil bobbin, but the joint portion may be provided on only one side. In that case, it is preferable to provide it at the rotor side edge.

  In the above embodiment, an example in which the present invention is applied to an axial type rotating machine has been described. However, a radial type rotating machine (a rotor having a magnet body in which N poles and S poles alternately appear on the surface in the rotation direction; The present invention can also be applied to a case where a coil bobbin is used in a rotating machine having a plurality of teeth around which a coil is wound and each tooth having a stator core provided facing the surface in the rotation direction of the magnet body. Is possible.

It is a substantially exploded perspective half sectional view which shows the external shape and structure of the rotary machine by preferable embodiment of this invention. It is a figure which shows the coil bobbin group of the state with which each tooth by the preferable embodiment of this invention was mounted | worn. (A) is the top view which looked at the coil bobbin group by preferable embodiment of this invention from the rotor side, (b) is the top view which looked at the coil bobbin group by preferable embodiment of this invention from the other side. It is a figure which shows the various examples of the shape of the fitting convex part and fitting recessed part by preferable embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Rotating machine 110 Shaft 120 Rotor 121 Through part 122a, 122b Permanent magnet 130 Stator core 131 Support member 132 Core 133 Teeth 140 Coil bobbin group 141 Coil bobbin 142 Through part 143, 144, 145, 146 Joint part 143a, 143d, 143e, 143g, 144b , 144c, 144f, 144h, 145a Fitting convex portion 143b, 143c, 143f, 143h, 144a, 144d, 144e, 144g, 146a Fitting concave portion 150 coil

Claims (4)

  A coil bobbin for a rotating machine, having a joint portion that comes into contact with another coil bobbin mounted on an adjacent tooth and integrated with the other coil bobbin by the joint portion.   The joint portion has a fitting convex portion or a fitting concave portion, and the fitting convex portion or the fitting concave portion is fitted with a fitting concave portion or a fitting convex portion provided in the other coil bobbin, respectively. The coil bobbin described in 1.   The coil bobbin according to claim 1, wherein the joint portion is provided at least on a rotor side edge portion of the coil bobbin.   A rotating machine comprising the coil bobbin according to any one of claims 1 to 3.

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