JPH0419962Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to an insulator that covers a core of a motor rotor, stator, etc. when windings are wound around the core.

[Prior art]

Conventionally, when winding wires around a laminated core such as the rotor or stator of a motor, the number of poles is injection molded into a thin sheet with a length half the height of the core 7, as shown in Figures 7 and 8. An insulator is constructed by inserting the skirt portions 9a of the insulator piece 9, in which the same number of skirt portions 9a are connected to the base end 9b, into the slot 7a of the core 7 from both sides and abutting them, as shown in FIG. A winding 10 was wound around the outer side of the coil.

Therefore, when the skirt part 9a is inserted into the slots 7a, since the skirt part 9a is formed into a thin sheet shape and has the same length, the tip of the skirt part 9a can be inserted into a plurality of slots 7a at the same time. Otherwise, insertion cannot be performed, and when one skirt portion is inserted into a slot, another skirt portion that has already been inserted may come off the slot, making the insertion work troublesome.

[Purpose of invention]

In view of the above-mentioned drawbacks, the present invention proposes an insulator that significantly improves work efficiency by inserting skirt parts of different lengths into slots in order from the longest one to prevent the inserted skirt parts from coming off during insertion. It is to be.

[Structure of the idea]

The present invention is an insulator that insulates the core from the windings wound around the core by inserting a plurality of skirt parts connected at the base end into a plurality of slots of the core from both sides and abutting them. By making the lengths different, the length of the skirt part can be adjusted to suit the length of the skirt.
This is because we have set a short term.

〔Example〕

The present invention will be explained below with reference to illustrated embodiments.

1 to 3 show a first embodiment, in which the insulator pieces 3 and 4 have the same shape.

The insulator pieces 3, 4 have base ends 3d, 4d and a plurality of skirt parts 3a, 3b, 3c, 4a, 4.
b, 4c and sleeves 3e, 4e, and the plurality of skirt parts are thin sheet-like and integrally injection molded so as to protrude in one direction from the flat base ends 3d, 4d. Sleeves 3e and 4e into which the rotating shaft 5 of the rotor 1 is fitted are integrally formed at the center of the end.

A plurality of skirt portions 3a, 3b, 3c, 4a, 4b, 4c is inserted, the inside of the slot is covered with a skirt portion, and the winding wire 10 is wound around the outer circumference of the skirt portion.

In addition, skirt portions 3a, 3b, 3c, 4a, 4
b and 4c have one end a in the circumferential direction centered on the rotating shaft 5 long and the other end b in the circumferential direction short, so that the protruding tips are inclined.

When the insulator pieces 3 and 4 are combined with the rotor 1, the rotating shaft 5 is inserted into the center hole of the sleeves 3e and 4e, and then one long circumferential end a of each skirt portion is first inserted into each slot. 2a, each skirt portion can be inserted in its entirety into each slot 2a very easily and easily.
When the insulator consisting of the insulator pieces 3 and 4 is rotated to the rotor 1 or the insulator pieces 3 and 4 are rotated from side to side, the outer wall of the corner of each skirt portion fits into the inner wall of the slot 2a. This ensures that the inner wall of the slot 2a is covered.

Further, in the core 2 of the rotor 1, one long circumferential end a of each skirt portion of the insulator element piece 3 and the other short circumferential end b of each skirt portion of the insulator element piece 4 are butted from both sides. Therefore, the dielectric strength between the winding 10 wound around the skirt portion and the core 2 is ensured.

FIG. 4 is an explanatory diagram of the operation of inserting the long and short skirt portions 3a and 3b of the insulator piece 3 into the core 2 while moving them left and right, broken down as shown in (1) to (5). By moving the section in the rotational direction and inserting it, it fits into the slot and can easily cover the core.

Figures 5 and 6 show a second embodiment of the present invention applied to the laminated core 7 of the stator 6, in which the insulator piece 8 has 12 skirt parts 8a, 8b, ~8k, and 8m, each shaped like a flat plate. is integrally molded so as to protrude in one direction from the base end 8n, and the protruding tip is inclined, and further, the length is gradually shortened from the skirt portion 8a to 8m.

Two of these insulator pieces 8 are prepared, and first, from the skirt part 8a of one of the insulator pieces 8, the core 7 is
Then, the skirt portion 8a of another insulator piece 8 is inserted into the slot of the skirt portion 8m of the previously inserted insulator piece 8 and abutted against each other.

In this way, these insulator pieces 3, 4, 8
By making the length of each skirt part different within one skirt part, it is possible to create long or short skirt parts, or by making one or more of the whole skirt parts long, and making the length of the skirt part adjacent to the long skirt part different. If the length of the skirt part in the middle is made shorter in the circumferential direction, the long skirt part can be inserted into the slot sequentially starting from the longer skirt part, and the longer skirt part can be inserted while the shorter skirt part is being inserted. Since it does not fall out, the entire insertion is extremely simple and easy.

Furthermore, it becomes possible to mechanize the insertion work and perform it automatically.

Further, the length of each skirt portion may be made longer or shorter every other time or stepwise. Further, the shape of the proximal end may be other than that shown.

In the above description, the present invention has been described as an insulator implemented in a motor, but it may also be implemented as an insulator in a generator.

[Effect of idea]

Since the present invention is configured as described above, the length from the base end of the skirt part to the tip in the protruding direction may be made different for each skirt part, or may be made different within one skirt part. By setting the length of the skirt portion to be long or short, multiple skirt portions can be inserted into multiple slots of the core very easily, which improves work efficiency. It is possible to provide an insulator that exhibits excellent practical effects such as significantly improved effects.

[Brief explanation of the drawing]

The drawings show an embodiment of the inventive insulator, and FIG. 1 is a partially sectional explanatory diagram of the rotor and insulator of the first embodiment, FIG. 2 is a side view of the same insulator, and FIG. Fig. 4 is an exploded view of inserting the skirt into the slot of the core, Fig. 5 is a partial cross-sectional view of the stator and insulator of the second embodiment, and Fig. 6 is the same insulator. FIG. 7 is a partial cross-sectional explanatory view of the main parts of a conventional stator and an insulator, and FIG. 8 is an exploded side view of the core. 2, 7...Core, 2a, 7a...Slot,
3, 4, 8...Insulator piece, 3d, 4d, 8n...
... Base end, 3a, ~3c, 4a, ~4c, 8a, ~
8k, 8m...Skirt part, 10...Winding wire.

Claims (1)

[Claims for Utility Model Registration] A base end of a flat plate, and a part that is connected to the base end, projects in one direction from the base end, and is inserted into a slot portion of a core of a motor or generator to cover the slot portion. two insulator pieces having a plurality of skirt parts, and from both axial end surfaces of the core so that the tips of the two insulator pieces in the protruding direction of the skirt parts abut against each other. By inserting the skirt portions of the two respective insulator pieces into the slot portions and covering the slot portions with the skirt portions,
In the insulator that insulates the winding wound around the core from the core, the length from the base end of the skirt portion to the tip in the protruding direction may be different for each skirt portion, or may be uniform. An insulator characterized in that the lengths of the skirt portions are set to have lengths or shortnesses by providing different lengths among the two skirt portions.