JPH0218663Y2 - - Google Patents

Description

[Detailed Description of the Invention] "Industrial Application Field" The present invention relates to a rotor for a rotating field type generator.

"Prior Art" Generally, a rotor for a shaftless rotating field type generator is not provided with a rotating shaft that passes through its body core, but split shafts are provided on flanges at both ends of the rotor. The structure is such that the left and right divided shafts are rotatably supported within the stator. Such a structure is intended to reduce the size and improve the performance of the entire generator by increasing the number of turns of the field coil.

On the other hand, in a relatively small-sized engine-driven generator, a shaft-through type rotor connects the ends of the output shaft of the engine through a taper, and the entire shaft of the rotor is fixed to the end of the output shaft of the engine through a taper. A set bolt is used that passes through the engine and the generator, thereby improving work efficiency during assembly and disassembly by making the connection between the engine and the generator smaller or simplifying the connection. However, this type of tapered coupling is not used in the conventional shaftless rotor mentioned above, and for this reason, small generators equipped with shaftless rotors require a lot of time to assemble and disassemble. This has caused the inconvenience of requiring a lot of effort.

In order to eliminate such disadvantages of the prior art, on the one hand, a clamping body is installed between a pair of flanges with split support shafts attached to both end faces of the iron core and the iron core part, and the clamping body Two sets of field coil winding dividing grooves are formed to sandwich the iron core part in advance and to wind a field coil around the thus formed iron core part, and these field coil winding dividing grooves After winding a field coil around the flange, the flange with a split support shaft is fixedly mounted, and an insertion hole for passing a bolt from one flange with a split support shaft to the other flange with a split support shaft is provided. , an attempt was made to taper connect the engine and generator by passing set bolts through the insertion holes, similar to the above-mentioned spindle-through type rotor, and thereby achieve further miniaturization and higher performance. It is progressing.

When winding the field coil, at least the clamping body that holds the iron core must have an airspace where the field coil cannot be wound so that it does not get in the way when the set bolt is inserted.
Since it is not possible to wind the field coil neatly and orderly by simply having this air space, two sets of dividing grooves for field coil winding are provided in the iron core at a suitable interval for inserting the set bolt. It is divided into two parts by two sets of field coil winding dividing grooves, and the field coil is wound thereon.

``Problem to be solved by the invention'' However, in the structure described above, when attaching the flange with split shaft to the clamping body that clamps the iron core from both ends, it is difficult to fit the flange into the split groove for winding each field coil. The flange with split shaft cannot be attached to the clamping body because the winding wires between the fitted field coils get in the way.
It is necessary to pass the winding crossover wire at a location where it will not get in the way of installation, but since the gap between the rotor and stator is extremely narrow, it is difficult to select the location for passing the winding crossover wire. There was a problem that it was not easy to pass the winding wire. Furthermore, when winding a field coil around an iron core or a clamping body, the end of the winding of the field coil repeatedly comes into contact with the wire being wound, causing the insulation coating to peel off. Due to the presence of the winding start end, the winding start end pulled out to the outside gets in the way, making it impossible to perform uniformly aligned winding, and as a result, the space factor of the coil in the field coil winding dividing groove decreases. In addition, various problems have arisen, including a problem in which the winding strength of the coil decreases due to winding collapse, etc.

Therefore, in view of the above circumstances, the present invention has been developed to solve the above-mentioned conventional problems, and in particular to facilitate the winding work of the field coil, as well as to attach a flange with a split shaft to the clamping body that clamps the iron core. An object of the present invention is to provide a rotor for a rotating field type generator that is easy to use.

"Means and effects for solving the problem" In order to achieve the above object, the present invention fits the winding crossover wire between the field coils into the winding crossover groove recessed in the clamping body. As a result, the winding crossover wire does not get in the way when attaching the flange with split support shaft to the clamping body, and the winding start end and the winding end end of the field coil can be removed from the above-mentioned winding crossover groove. By pulling out the winding start of the field coil outside from inside the winding transition groove, especially during winding, the winding of the field coil can be easily avoided when winding the field coil in the field coil winding groove. This allows winding to be carried out without any hindrance such as contact with the starting end.

"Embodiment" Hereinafter, an embodiment of the present invention will be described based on FIGS. 1 to 5.

FIG. 1 is a cross-sectional view showing the main body of a rotating field type generator equipped with an embodiment of the present invention and a connecting portion with a driving engine. In this figure, 1 is a driving engine body, 2 is a generator body, 3 is a stator of the generator body 2 fixed to the engine body 1, and 4 is a stator of the generator body 2 fixed to the engine body 1.
6 is a rotating field type rotor connected to the rotational output shaft 11 of the sinking engine 1 and rotatably supported by the stator frame of the generator main body 2; The cooling fans installed in each are shown.

Output shaft 1 for connecting the generator of the engine body 1
1 constitutes one end of the crankshaft. The output shaft 11 has an output end supported by the engine body 1 via a bearing 12, and an outer periphery of the distal end protruding outside the engine body 1, which has a tapered portion 11.
A and a screw hole 1 at the axial center position of the tip surface.
1B is formed. One end of the rotor 4 is supported by the tapered portion 11A and the screw hole 11B, as will be described later, so that the rotor 4 is rotationally driven by the engine body 1.

As shown in FIGS. 1 to 3, the rotor 4 includes an iron core 41 and clamping bodies 43 and 44 for gripping the iron core 41 from both left and right end surfaces in FIG. 2 of the iron core 41. , a field coil 42 wound from the iron core 41 to the clamping bodies 43 and 44;
and flanges 45, 46 with split support shafts attached to the respective outer end surfaces of the clamping bodies 43, 44. The rotor 4 formed in this manner has an insertion hole H for passing through the bolt through its axis.
is formed. Further, in the split support shaft flange 46 of the rotor 4, a tapered hole 46D for fitting into the output shaft 11 is formed inward from the end surface of the support shaft. That is, one end portion of the so-called shaftless type rotor 4 shown in FIG. , the other end is rotatably supported by the generator body 2 via a bearing 53, and is further integrally fixed to the output shaft 11 by a set bolt 54 passed through the insertion hole H. ing. Thereby, the rotor 4 is smoothly rotated by the engine body 1.

FIG. 4 is a diagram showing the winding portion of the rotor as seen from the clamping body 43 before the split support shaft flange 45 in FIG. 2 is attached. FIG. 5 also shows the iron core 4 in a state before the field coil shown in FIG. 4 is used as a stator.
1. Clamping bodies 43, 44 and insulating members 48A, 48
FIG. 3 is an exploded view showing the relationship and shape of B, and is adapted to be assembled along arrow A. That is, the insulating member 48A is fitted to the clamping body 43, and the insulating member 48B is fitted to the clamping body 44, respectively. The insulating members 48A, 48B are for insulating the field coil 42 to be wound from the clamping bodies 43, 44 and the iron core part 41, and are the same as the surfaces of the clamping bodies 43, 44 and the iron core part 41 to be fitted, respectively. It is shaped. Said clamping body 43, 44
is the dividing groove 41 for field coil winding of the iron core part 41.
It has field coil winding dividing grooves 43A and 43B that are continuous to A and 41B, respectively.

Furthermore, each of these clamping bodies 43, 44 has
Winding transition grooves 50A and 50B are formed to interconnect the field coil winding division grooves 43A and 43B. And this transition groove 50A, 50
B and the field coil winding dividing grooves 43A, 43B.
The corner portions of the side walls at the connecting portions are cut relatively largely, so that the field is magnetic coil 42
It is designed so that it can be gently bent and wound continuously. The insulating member 48A,
48B is fitted to the clamping bodies 43, 44, respectively, so that each clamping body 43, 44
Similarly, as shown in FIG.
B is formed.

In addition, in FIG. 4, 61 is the field coil 42.
, 62 indicates a winding crossover wire when moving from one field coil winding dividing groove 43A to the other field coil winding dividing groove 43B, 6
3 indicates the winding end end of the field coil 42, and the winding start end 61 and winding end end 63 are connected to the winding transition groove 5.
It is designed to be drawn out from inside 0B through small holes 70 and 71 formed in the flange 45 with a split support shaft. Of course, the winding crossover wire 62 is fitted into the winding crossover groove 50A. The field coil winding dividing grooves 41A, 41B, 43A, 43B and the winding transition grooves 50A, 50B are connected to the insulating member 48.
The depth is such that when the field coil 42 is wound with A and 48B interposed and the winding crossover wire 62 is fitted, the wires do not protrude outward.

Although the clamping body 44 and the other clamping bodies 43 and the insulating member 48B are formed in the same shape as the other insulating member 48A, they are used only because the same shape is advantageous in manufacturing. It is also possible to use the clamping body 44 and the insulating member 48B that do not have the winding transition grooves 50A, 50B.

"Effects of the Invention" As described above, the rotor for a rotating field type generator according to the present invention includes a clamping body that clamps the iron core from both ends thereof, and a clamping body that is attached to the clamping body to support rotation. For winding two sets of field coils when tapering a rotor for a shaftless rotating field type generator to the output shaft of an engine using a flange with a split support shaft with a protruding support shaft. By fitting the winding crossover wire of the field coil wound in the dividing groove into the winding transition groove of the clamping body, the flange with a split support shaft can be easily attached to the clamping body. In addition, since the winding start end and the winding end end of the field coil are pulled out from within the winding transition groove of the clamping body, and the winding start end in particular is pulled out, the winding of the field coil is During winding, the winding start end will not interfere with the winding in any way, such as coming into contact with the wire of other winding parts, and winding can be continued smoothly. The field coil can be wound over the entire length of the field, and as a result, parts of the field coil will not slip off during winding, so the field coil can be wound evenly and in an orderly manner. Since the winding start end of the coil 42 does not come into sliding contact with other adjacent windings during winding,
The insulation coating at the end of the winding start does not peel off, so there is no need to put a protective insulating tube over the end of the winding, and each It is possible to provide a rotor for a rotating field type generator which is unprecedented and practically useful in that the coils can be insulated and fixed in an orderly manner and firmly, and furthermore, insulation deterioration can be prevented and durability can be increased.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing an example of a rotating field generator equipped with a rotor for a rotating field generator according to the present invention, and FIG. 2 is a rotor for a rotating field generator according to the present invention. FIG. 3 is a right side view of FIG. 2, FIG. 4 is an explanatory diagram showing the field coil portion seen from the - line in FIG.
FIG. 4 is an exploded explanatory view showing the relationship between each component in a state before the field coil shown in the figure is wound. 41... Iron core part, 41A, 41B, 43A, 4
3B... Division groove for field coil winding, 42... Field coil, 43, 44... Clamping body, 45, 46...
Flange with split support shaft, 50A, 50B...Windling groove.

Claims (1)

[Scope of utility model registration request] An iron core with four field coil winding dividing grooves parallel to the axis recessed on its surface and an insertion hole through which a set bolt is inserted in the axial direction, and a shape whose peripheral outer shape matches that of the iron core. 2 for forming two sets of field coil winding dividing grooves that sandwich the iron core part from both ends thereof and communicate with the field coil winding dividing grooves of the iron core part and facing each other about the axis as a whole. Inside the two sets of divided grooves for field coil winding, which are formed by a clamping body with two field coil winding division grooves recessed on its surface and an insertion hole through which a set bolt is inserted, and an iron core and a clamping body. The field coil is wound around a field coil, and a support shaft is fixedly attached to each of the above-mentioned clamping bodies and protrudes to support rotation, and one of the support shafts is tapered so that it can be connected to the output shaft of the engine. A flange with a split support shaft formed in a shape and provided with an insertion hole through which a set bolt is inserted, and a flange with a split support shaft that is inserted into each of the insertion holes of the iron core, the clamping body, and the flange with a split support shaft and screwed to the output shaft of the engine. In a rotor for a rotating field type generator consisting of a set bolt, a winding transition groove is formed on the surface of any of the above-mentioned clamping bodies to communicate the inside of the two field coil winding division grooves. , and an insulating member is disposed along the shape from the surface of the clamping body to the field coil winding division grooves of the iron core, and the above two sets of field coil winding division grooves extending from the iron core to the clamping body are provided with an insulating member. The field coil is fitted with an insulating member interposed therebetween, and the divided groove for field coil winding of each clamping body covered with the insulating member is set in such a way that the fitted field coil does not protrude outward. The winding transition wires of the two sets of field coils are fitted into the winding transition grooves, and the winding end and winding start ends of the field coils are formed in the winding transition groove. A rotor for a rotating field type generator, characterized in that the rotor is inserted through a small hole drilled in a flange with a split support shaft through a crossover groove and pulled out to the outside.