JP2022066640A - Attaching structure of ring-shaped base plate by insulation cap in motor and insulation cap thereof - Google Patents

Abstract

To easily attach a ring-shaped base plate to a segment type ring-shaped stator.SOLUTION: An attaching structure of a ring-shaped base plate by an insulation cap in a motor and the insulation cap include: a ring-shaped stator (1) formed of a plurality of division stator cores (2); first projections (10) of first insulation cap parts (8), which are fixed to first attaching recesses (4) formed in inner walls (3) of the division stator cores (2); second projections (11) of second insulation cap parts (9), which are fixed to second attaching recesses (5) formed on the inner walls (3) of the division stator cores (2) while facing the first insulation cap parts (8); a ring-shaped base plate (15) which are provided on an outer side of an axial direction (P) of the ring-shaped stator (1); and recesses (31) which are formed in outer periphery (30) positions of the ring-shaped base plate (15) and engage the first projections (10). The ring-shaped base plate (15) is configured to be fixed apart from end faces (2A) of the ring-shaped stator (1) along the axial direction (P).SELECTED DRAWING: Figure 1

Description

The present invention relates to a structure for attaching a ring-shaped substrate by an insulating cap in a motor and the insulating cap thereof, and in particular, enables the annular substrate to be easily mounted in a predetermined position on a ring-shaped stator via a large number of insulating caps. Regarding new improvements for.

As a winding structure using this kind of insulating cap that has been conventionally used, the configuration disclosed in Patent Document 1 can be mentioned, but the stator windings in the segment core (split type stator core) are aligned and wound. In order to do so, a large number of grooves were formed in the peripheral wall between each rising wall of the split core, and the stator windings were wound in an aligned manner through the grooves.

Japanese Unexamined Patent Publication No. 2016-201957

Since the winding structure using the conventional insulating cap is configured as described above, the following problems exist.
That is, no structure has been disclosed in which the substrate is positioned only by winding the stator winding in a large number of grooves formed on the outer periphery between the rising walls of each segment core.
Therefore, for mounting the printed circuit board installed in the motor, a method of mounting the board itself as a horseshoe shape is adopted, and it is difficult to use a ring-shaped board on which a large number of electronic components can be mounted.

The present invention has been made to solve the above problems, and in particular, to enable a ring-shaped substrate to be easily attached to a ring-shaped stator in a predetermined position via a large number of insulating caps. Is.

The mounting structure of the substrate by the insulating cap in the motor according to the present invention comprises a ring-shaped stator composed of a large number of split stator cores and a first protrusion of a first insulating cap portion fixed to a first mounting recess formed in the inner wall of the split stator core. And the second projection of the second insulating cap portion fixed to the second mounting recess formed on the inner wall of the divided stator core facing the first insulating cap portion, and provided on the outer side in the axial direction of the ring-shaped stator. The ring-shaped substrate is provided with a recess formed at an outer peripheral position of the ring-shaped substrate and for fitting the first protrusion, and the ring-shaped substrate is separated from the end face of the ring-shaped stator along the axial direction. The first protrusion is a fixed structure, and the first protrusion is composed of a pair of protruding pieces formed in a bifurcated shape and a return portion for preventing pulling out formed at the tip of each protruding piece. In addition, the first inner end of the first insulating cap portion and the second inner end of the second insulating cap portion are bonded to each other in a state of being overlapped with each other along the axial direction. The insulating caps according to the invention include a first insulating cap portion and a second insulating cap portion that are coupled to each other and have a U-shaped overall shape, and a first protrusion and a second protrusion provided at the end of each insulating cap portion. Each of the protrusions is extended in opposite directions to each other, and is formed on a pair of protruding pieces formed at the tip thereof, a return portion formed on the protruding piece, and an outer periphery of each insulating cap portion. , The first and second winding holding portions forming a groove shape, and the winding holding portions are configured to be used in a state of being connected to each other.

The mounting structure of the substrate by the insulating cap in the motor according to the present invention comprises a ring-shaped stator composed of a large number of split stator cores and a first protrusion of a first insulating cap portion fixed to a first mounting recess formed in the inner wall of the split stator core. And the second projection of the second insulating cap portion fixed to the second mounting recess formed on the inner wall of the divided stator core facing the first insulating cap portion, and provided on the outer side in the axial direction of the annular stator. The ring-shaped substrate is provided with a recess formed at an outer peripheral position of the ring-shaped substrate and for fitting the first protrusion, and the ring-shaped substrate is separated from the end face of the ring-shaped stator along the axial direction. By being fixed, the ring-shaped substrate can be assembled at the same time when assembling each insulating cap, and the ring-shaped substrate can be easily attached at a predetermined position.
Further, the first protrusion is composed of a pair of protruding pieces formed in a bifurcated shape and a return portion for preventing pulling out formed at the tip of each of the protruding pieces, so that the protrusion can be used as a substrate. At the time of mounting, since each of the protruding pieces opens after being inserted into the recess, each return portion also opens as before, and the substrate can be provided at a predetermined position.
Further, the first inner end of the first insulating cap portion and the second inner end of the second insulating cap portion are bonded to each other in a state of being polymerized along the axial direction, so that each insulating cap is formed. The connection strength of the part can be kept at a sufficient value.
Further, the insulating cap portions according to the present invention include a first insulating cap portion and a second insulating cap portion that are coupled to each other and have a U-shaped overall shape, and a first protrusion and a protrusion provided at the end of each insulating cap portion. A second protrusion, a pair of protrusions extending in opposite directions to each other and a pair of protrusions formed at the tip thereof, a barb formed on the protrusion, and each insulating cap portion. It is composed of first and second winding holding portions formed on the outer periphery and forming a groove shape, and the winding holding portions are used in a state of being connected to each other. Each protrusion is fitted, and the annular substrate can be attached above the annular stator by the insulating cap composed of the insulating cap portions.
Further, by arranging the annular substrate coaxially with the annular stator, it is possible to realize a flat motor in which the axial length of the annular stator with a substrate is shortened.

It is a perspective view which shows the mounting structure of the substrate by the insulating cap in the motor by embodiment of this invention. It is a perspective view which shows the separated state of the insulation cap of FIG. It is an enlarged perspective view which shows the main part of FIG.

The structure for attaching a ring-shaped substrate by an insulating cap in a motor according to the present invention and the insulating cap thereof have a configuration in which a ring-shaped substrate can be easily attached to a ring-shaped stator at a predetermined position via a large number of insulating caps.

Hereinafter, a structure for attaching a ring-shaped substrate by an insulating cap in a motor according to the present invention and a preferred embodiment of the insulating cap will be described with reference to the drawings.
FIG. 1 shows a motor 1A having a ring-shaped stator 1 after assembly, and the ring-shaped stator 1 of the motor 1A is configured to have a circular shape in a jig (not shown) in which a large number of divided stator cores 2 are not shown. There is.

At least one or a plurality of first mounting recesses 4 are formed at the center position of the inner wall 3 of each of the divided stator cores 2.
As described above, the configuration of the upper inner wall 3 of each of the divided stator cores 2 has been described, but also in the configuration of the lower part of the inner wall 3 of each of the divided stator cores 2, the same second mounting recess 5 as the first mounting recess 4 is formed. Has been done.

Inside each of the divided stator cores 2, an inner tooth 6 extending inward from the inner wall 3 of each of the divided stator cores 2 is formed.
That is, the divided stator core 2 and the inner teeth 6 are integrally formed so as to face each other via the connecting portion 6A shown by the alternate long and short dash line, and the inner teeth 6 are shown as shown in FIG. It constitutes a magnetic pole for a rotor that does not, and is arranged in a cylindrical shape to form an AC servomotor.

In the assembly of the ring-shaped stator 1, since each of the divided stay cores 2 is arranged in a ring shape in a jig (not shown), the ring-shaped stator 1 is provided with an insulating cap 7 and an electrical structure shown in FIGS. 2 and 3. A ring-shaped substrate 15 having a printed wiring pattern is always required.
First, the insulating cap 7 will be described.
As shown in FIGS. 2 and 3, the insulating cap 7 is composed of first and second insulating cap portions 8 and 9, and each of the insulating cap portions 8 and 9 has a U-shape when viewed in a plane. Along each of the U-shapes, first and second winding holding portions 8A and 9A forming a channel shape (groove shape) are formed.

The end portions 8B and 9B of the insulating cap portions 8 and 9 are provided with first and second protrusions 10 and 11, respectively, and the protrusions 10 and 11 are provided so as to face each other in opposite directions. The insulating cap portions 8 and 9 are arranged so as to face each other in opposite directions.

Recessed space portions 8C and 9C are formed inside the winding holding portions 8A and 9A of the insulating cap portions 8 and 9, and the winding holding portions 8A and 9A of the insulating cap portions 8 and 9 are formed. Holds the connection portion 6A from above and below, and connects the respective inner ends 8D and 9D to each other along the arrow A to integrally connect the respective insulating cap portions 8 and 9. It can be fixed to the connection portion 6A.

In the above-mentioned state, the winding holding portions 8A and 9A are formed as one loop-shaped groove connected to each other, and the stator windings (not shown) wound in advance are formed into the winding holding portions 8A and 9A. The stator windings can be configured to be wound around the winding holding portions 8A and 9A by mounting on the windings or by automatic winding by a specially-designed automatic winding machine.

A pair of protruding pieces 20 and 21 are formed by bifurcating branches at the tips 10A of the protrusions 10 and 11 provided at the ends 8B and 9B of the insulating cap portions 8 and 9, respectively. At the tips of the projecting pieces 20 and 21, the return portions 20A and 21A for preventing falling out are integrally formed so as to form a melon shape in opposite directions to each other.
As is clear from FIG. 2, the protrusions 10 and 11 are formed so as to slightly protrude from the surfaces of the end portions 8B and 9B of the winding holding portions 8A and 9A.

Next, the configuration of the ring-shaped substrate 15 will be described. As shown in FIG. 1, the ring-shaped substrate 15 is held in a state in which the ring-shaped stator 1 floats upward via the insulating cap portions 7 in the figure.
A large number of recesses 31 are formed on the outer peripheral portion 30, that is, the peripheral edge of the ring-shaped substrate 15, corresponding to the angular positions where the inner teeth 6 and the divided stator cores 2 are located. The protruding pieces 20 and 21 of the tip 10A of the first protrusion 10 fitted in the first mounting recess 4 formed in the end surface 2A of each divided stator core 2 are fitted in the recess 31 of the ring-shaped substrate 15. It fits. The return portions 20A and 21A are configured to engage with the recess 31 so as not to come out of the recess 31.

As described above, when the attachment of each of the first insulating cap portions 8 to the ring-shaped substrate 15 is completed, each of the first space portions 8C of each of the first insulating cap portions 8 has the divided stator core 2 and each of the above. It is located so as to straddle the connecting portion 6A that integrally connects the inner teeth 6, and in this state, from the lower side (not shown) of the connecting portion 6A, the second inside of each of the second insulating cap portions 9 By polymerizing and fitting the end 9D to the first inner end 8D of the first insulating cap portion 8 along the arrow A in FIG. 2, the insulating cap portions 8 and 9 are integrally connected. ..

In the above case, the second protrusion 11 of the second winding holding portion 9A is fitted in the second mounting recess 5 communicating with the first mounting recess 4 of each split stator core 2, and the arrow indicates. By moving in the direction of A, the first and second protrusions 10 and 11 come into contact with each other.
The second mounting recess 5 in FIG. 1 is formed on the back surface of the split stator core 2.
Actually, as shown in FIG. 1, the second protrusion 11 protrudes downward from the divided stator core 2 of the annular stator 1 after being attached to each divided stator core 2, but since it is unnecessary, this protruding portion is a motor. After assembling 1A, it will be cut off.

As described above, by fitting the protruding pieces 20 and 21 of the first protrusions 10 into the first mounting recesses 4 provided on the inner wall 3 of the ring-shaped stator 1 composed of the divided stator cores 2, the above-mentioned The ring-shaped substrate 15 can be easily attached to the ring-shaped stator 1.

The structure for attaching a ring-shaped substrate by an insulating cap in a motor according to the present invention and the insulating cap thereof can easily attach a ring-shaped substrate to a ring-shaped stator composed of a split stator core via a plurality of insulating caps, and can be used for flat motors and the like. Easy to assemble.

1 Ring-shaped stator 1A motor 2 Split stator core (segment core)
2A End face 3 Inner wall 4 1st mounting recess 5 2nd mounting recess 6 Inner teeth 6A Connection part 7 Insulation cap 8 1st insulation cap part 8A 1st winding holding part 8B End part 8C 1st space part 8D 1st inner end 9 2nd insulation cap part 9A 2nd winding holding part 9B end part 9C 2nd space part 9D 2nd inner end 10 1st protrusion 10A tip 11 2nd protrusion 15 ring-shaped substrate 20, 21 protrusion piece 20A, 21A return part 30 outer circumference (Periphery)
31 Recessed P-axis direction

Claims (4)

A ring-shaped stator (1) composed of a large number of split stator cores (2) and a first insulating cap portion (8) fixed to a first mounting recess (4) formed in the inner wall (3) of the split stator core (2). 1st protrusion (10) and a second mounting recess (5) formed in the inner wall (3) of the split stator core (2) facing the first insulating cap portion (8). The second protrusion (11) of the insulating cap portion (9), the ring-shaped substrate (15) provided outside the axial direction (P) of the ring-shaped stator (1), and the outer periphery (30) of the ring-shaped substrate (15). ) Is provided with a recess (31) formed at the position and for fitting the first protrusion (10).
The ring-shaped substrate (15) is a structure for mounting a substrate by an insulating cap in a motor, characterized in that the ring-shaped substrate (15) is separated and fixed along an axial direction (P) from an end surface (2A) of the ring-shaped stator (1). The first protrusion (10) is a pair of protruding pieces (20,21) formed in a bifurcated shape, and a pull-out prevention return portion (20A,) formed at the tip of each of the protruding pieces (20, 21). 21A), and the substrate mounting structure with an insulating cap in the motor according to claim 1. The first inner end (8D) of the first insulating cap portion (8) and the second inner end (9D) of the second insulating cap portion (9) are in a state of being polymerized with each other along the axial direction (P). The structure for mounting a substrate by an insulating cap in the motor according to claim 1 or 2, wherein the motor has a coupled configuration. Provided at the first insulating cap portion (8) and the second insulating cap portion (9) which are coupled to each other and have a U-shaped overall shape, and at the end portions (8B, 9B) of the respective insulating cap portions (8, 9). The first protrusion (10) and the second protrusion (11) and the respective protrusions (10, 11) are extended in opposite directions to each other, and a pair of protrusions formed at the tip (10A) thereof. A groove-shaped third piece (20,21) formed on the outer periphery of each of the insulating cap portions (8, 9), the return portion (20A, 21A) formed on the protruding piece (20, 21), and the protruding portion (20, 21). It consists of 1st and 2nd winding holding parts (8A, 9A).
An insulating cap characterized in that the winding holding portions (8A, 9A) are used in a state of being connected to each other.

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