CN102801226A - Rotary motor, method for manufacturing the same, and device possessing the same - Google Patents

Abstract

The invention provides a rotary motor capable of improving the cooling efficiency of a stator coil, a method for manufacturing the same, and a device possessing the same. Especially, a resin used for injection molding a stator iron core and the stator coil comprises a hole part reaching the exterior of the resin from the annular shaft direction end face of the stator iron core, the annular stator iron core is fixed in the interior of a frame possessed by the rotary motor, and the stator coil is arranged on the stator iron core. The hole part is arranged such that a plurality of parts from the peripheral part of the annular shaft direction end face of the stator iron core are opened outwards the resin separately, and are arranged as annular shaft directions of which the hole shaft directions are parallel with the stator iron core.

Description

Rotating electric machine, method of manufacturing rotating electric machine, and device including rotating electric machine

technical field

The present invention relates to a rotating electrical machine, a method of manufacturing the rotating electrical machine, and a device including the rotating electrical machine.

Background technique

Conventionally, there is a rotating electric machine in which a stator core is provided inside a frame. In such a rotating electric machine, the stator coil wound on the stator core and the stator core may be injected with resin (for example, refer to Patent Document 1).

Patent Document 1: Japanese Patent Application Laid-Open No. 8-47218

In a rotating electrical machine, it is desirable to be able to efficiently dissipate heat generated from stator coils during operation. However, in the rotating electrical machine of Patent Document 1 in which the stator core and the stator coil are injection-molded with resin, no special measures are taken against the heat dissipation.

Contents of the invention

The disclosed technology is based on the foregoing, and an object thereof is to provide a rotating electric machine capable of improving the cooling efficiency of a stator coil, a method of manufacturing the rotating electric machine, and an apparatus including the rotating electric machine.

In the rotating electrical machine disclosed in the present application, the resin injection-molded with the annular stator core and the stator coil has a hole extending from the end surface of the stator core in the ring axis direction to the outside of the resin, and the annular stator core is fixed to the frame. Internally, stator coils are provided on the stator core.

According to one aspect of the rotating electric machine disclosed in the present application, the cooling efficiency of the stator coil can be improved.

Description of drawings

FIG. 1 is a schematic diagram showing the configuration of a rotating electric machine according to an embodiment.

FIG. 2 is a schematic diagram showing the configuration of a rotating electric machine according to the embodiment.

Fig. 3 is a schematic diagram showing a mold according to an example.

FIG. 4A is a schematic cross-sectional view illustrating a method of manufacturing the rotating electric machine according to the embodiment.

4B is a schematic cross-sectional view illustrating a method of manufacturing the rotating electric machine according to the embodiment.

4C is a schematic cross-sectional view illustrating a method of manufacturing the rotating electric machine according to the embodiment.

4D is a schematic cross-sectional view illustrating a method of manufacturing the rotating electric machine according to the embodiment.

FIG. 5 is a schematic diagram showing a device including a rotating electric machine according to an embodiment.

FIG. 6A is a schematic cross-sectional view showing a mounting process of the temperature sensor according to the embodiment.

FIG. 6B is a schematic cross-sectional view showing a mounting process of the temperature sensor according to the embodiment.

FIG. 6C is a schematic cross-sectional view showing a mounting process of the temperature sensor according to the embodiment.

7 is a schematic diagram showing a rotating electrical machine in which a stator core is composed of a plurality of split cores according to an embodiment.

Symbol Description

L-ring shaft; 1, 1a-rotating motor; 2-frame; 3-stator core; 3a-coil skeleton; 30, 30a-hole; 31-stator coil; 32-resin; 33-temperature sensor; 35-glue Binder; 36-split iron core; 37-circumferential central part; 4-bracket; 6-axis; 7, 34, 91-lead; 8-rotor core; 81-permanent magnet; 100, 110-mold; 111-bottom surface; 102, 112-support pin; 103, 113-inner wall; 104, 114-outer wall; 200-device.

Detailed ways

Hereinafter, embodiments of the rotating electric machine, the method of manufacturing the rotating electric machine, and the device including the rotating electric machine disclosed in the present application will be described in detail with reference to the drawings. In addition, this invention is not limited to the illustration in the Example shown below.

Example

First, the configuration of the rotating electrical machine according to the embodiment will be described using FIGS. 1 and 2 . 1 and 2 are schematic diagrams showing the structure of a rotating electrical machine 1 according to an embodiment, and FIG. 1 schematically shows a cross section along line X-X of the rotating electrical machine 1 in FIG. 2 .

In addition, FIG. 2 schematically shows a Y-Y line cross section of the rotating electric machine 1 in FIG. 1 . 2 shows the rotating electric machine 1 in a state where the lead wire 34 and the bracket 4 connected to the temperature sensor 33 described later are removed for convenience of description.

As shown in FIGS. 1 and 2 , a rotating electrical machine 1 according to this embodiment includes a frame 2 , a stator core 3 , a bracket 4 , a bearing 5 , a shaft 6 , a rotor core 8 , a position detector 9 and a cover 10 .

Further, the rotary electric machine 1 is linked to an external device (not shown) via a shaft 6 . Next, a case where the rotary electric machine 1 is a motor and the external device is a load of the motor will be described.

The frame 2 is a cylindrical casing, and accommodates the stator core 3 and the rotor core 8 therein. In addition, a bracket 4 is provided at the open end of the frame 2 . The outer peripheral part of the bracket 4 is attached to the opening end part of the frame 2, and the bearing 5 is held by the inner peripheral part.

The stator core 3 is an annular member formed by laminating a plurality of thin electromagnetic steel sheets. The stator core 3 is fixed to the inner peripheral surface of the frame 2 by shrink fitting in a state where the bobbin 3 a around which the stator coil 31 is wound is mounted. Furthermore, the stator core 3 , the bobbin 3 a and the stator coil 31 are injection-molded with a thermosetting resin 32 .

In addition, the bearing 5 holds the shaft 6 so as to be rotatable around the ring axis L of the stator core 3 as a rotation axis. Furthermore, lead wires 7 for supplying three-phase electric power for driving the shaft 6 are connected to the stator coil 31 . The lead wires 7 are drawn out to the outside of the frame 2 through the supporting member 21 of the frame 2 .

In addition, the rotor core 8 is disposed opposite to the inner peripheral side of the stator core 3 with a gap therebetween. The rotor core 8 is a cylindrical member formed by laminating a plurality of thin electromagnetic steel sheets, and as an example, a plurality of permanent magnets 81 are arranged on the peripheral surface. The involved rotor core 8 rotates around the ring axis L of the stator core 3 as the rotation axis.

The position detector 9 is a rotary encoder, a resolver, or the like that detects the rotational position of the shaft 6 . A lead wire 91 for outputting a detection result of the rotational position of the shaft 6 to a predetermined control device (not shown) is connected to the position detector 9 . Furthermore, the position detector 9 is covered with a cover 10 .

In this rotating electric machine 1 , since electricity is supplied to the stator coil 31 wound around the stator core 3 , a rotating magnetic field is generated inside the stator core 3 . Then, the rotor core 8 rotates due to the interaction between the rotating magnetic field and the magnetic field generated by the permanent magnet 81 of the rotor core 8 , and the shaft 6 rotates according to the rotation of the rotor core 8 .

Furthermore, when the rotating electrical machine 1 is used as a generator, the opposite operation to that of the motor is performed. That is, the rotor core 8 rotates with the rotation of the shaft 6 to generate current in the stator coil 31 of the stator core 3 .

Furthermore, the resin 32 that injects the stator core 3 , the bobbin 3 a and the stator coil 31 has a hole 30 extending from the end surface of the stator core 3 in the ring axis L direction to the outside of the resin 32 . The resin 32 having the holes 30 has a larger surface area than the resin 32 without the holes 30 , and therefore has high cooling efficiency.

Therefore, in the rotating electric machine 1, the cooling efficiency of the stator coil 31 injected with the resin 32 is improved. In addition, since no holes or the like are intentionally formed on the end surface of the stator core 3 in the ring axis L direction where the hole portion 30 reaches, the holes or the like do not affect the electromagnetic characteristics.

In addition, the hole portion 30 provided in the resin 32 penetrates from the end surface of the resin 32 in the ring axis L direction to the end surface of the stator core 3 in the ring axis L direction. Thus, in the rotary electric machine 1 , heat generated from the stator coil 31 during operation is efficiently dissipated from the hole 30 to the outside of the resin 32 through the stator core 3 .

In addition, as shown in FIG. 2 , the holes 30 are opened toward the outside of the resin 32 from a plurality of locations (12 locations here) on the periphery of the end surface of the stator core 3 in the ring axis L direction. Accordingly, in the rotating electrical machine 1 , heat can be efficiently dissipated from each of the plurality of hole portions 30 .

Furthermore, the plurality of hole portions 30 are provided at equal intervals along the circumferential direction of the stator core 3 with respect to the end surface of the stator core 3 in the ring axis L direction. As a result, in the rotating electrical machine 1 , heat can be dissipated evenly from each portion of the end surface of the stator core 3 in the direction of the ring axis L, and thus heat generated by the stator coil 31 can be more efficiently dissipated to the outside of the resin 32 .

In addition, a temperature sensor 33 is provided inside one of the hole portions 30 among the plurality of hole portions 30 . Accordingly, in the rotating electrical machine 1 , the temperature of the stator coil 31 can be detected by the temperature sensor 33 .

Therefore, in the rotating electrical machine 1, a predetermined control device can monitor the temperature detected by the temperature sensor 33, and when the temperature exceeds a predetermined threshold, the control device can issue an alarm for abnormal heat generation or stop the rotating electric machine 1 from operating.

In addition, as shown in FIG. 2 , the temperature sensor 33 is provided in the hole portion 30 disposed in a region other than the region where the lead wire 7 is disposed among the plurality of hole portions 30 connected to the stator coil 31 . Accordingly, in the rotating electrical machine 1, it is possible to prevent the lead wire 34 connected to the temperature sensor 33 from interfering with the lead wire 7 connected to the stator coil 31 inside the frame 2.

Furthermore, the temperature sensor 33 may be provided in a plurality of hole portions 30 selected from all the hole portions 30 . In this case, temperature sensors 33 are arranged at equal intervals along the circumferential direction on the end face of the stator core 3 in the direction of the ring axis L. As shown in FIG.

According to this configuration, the temperature distribution of the plurality of stator coils 31 arranged in an annular shape can be detected. Therefore, according to the rotating electrical machine 1 , even if some stator coils 31 generate abnormal heat, the occurrence of abnormal heat can be appropriately detected by the temperature sensor 33 corresponding to the stator coil 31 that caused the abnormal heat.

In addition, the hole portion 30 is provided such that the hole axis direction is parallel to the ring axis L direction of the stator core 3 . Therefore, before fitting the bracket 4 to the frame 2, the operator who attaches the temperature sensor 33 can visually observe the resin 32 inside the frame 2 from the direction of the ring axis L of the frame 2, thereby easily confirming the position of the attachment temperature sensor 33. The position of the hole portion 30. Thereby, the workability of the mounting operation of the temperature sensor 33 is improved.

Also, the hole axis direction of the hole portion 30 is preferably parallel to the ring axis L direction of the stator core 3 , but does not necessarily have to be parallel to the ring axis L direction.

In addition, when the resin 32 is used to inject the stator core 3 , the bobbin 3 a and the stator coil 31 , the resin 32 is provided so as to protrude from the frame 2 in the direction of the ring axis L by a predetermined length. The resin 32 functions as a mounting position positioning member when the bracket 4 is mounted from the protruding portion 32 a of the frame 2 .

Thereby, the operator who installs the bracket 4 can easily attach the bracket 4 only by fitting the protrusion part 32a from the frame 2 to the bracket 4, without performing complicated alignment.

Furthermore, as described above, the resin 32 has a plurality of hole portions 30 . Therefore, for example, even if the diameter of the protruding portion 32a from the frame 2 is somewhat larger than the diameter of the bracket 4, since the hole portion 30 is deformed when the bracket 4 is fitted and plays a role of avoiding stress, it is possible to The bracket 4 is fitted to the resin 32 .

That is, in the rotating electrical machine 1, when the diameter of the protruding portion 32a from the frame 2 is somewhat larger than the diameter of the bracket 4, the bracket can be attached without performing complicated operations such as processing to reduce the diameter of the portion 32a. rack 4.

Next, a mold used for injection molding the stator core 3 and the stator coil 31 will be described with reference to FIG. 3 . FIG. 3 is a schematic diagram showing a mold 100 according to the embodiment.

As shown in FIG. 3 , the mold 100 has a space formed by a doughnut-shaped bottom surface 101 , an inner wall 103 erected from the inner periphery of the bottom surface 101 , and an outer wall 104 erected from the outer periphery of the bottom surface 101 .

In addition, the bottom surface 101 is formed such that the outer circumference is larger than the outer diameter of the cylindrical frame 2 and the inner circumference is smaller than the inner diameter of the stator core 3 . Further, a plurality of support pins 102 for supporting the end surface of the stator core 3 in the direction of the ring axis L are vertically provided on the bottom surface 101 . The plurality of support pins 102 are arranged at equal intervals along the circumferential direction of the bottom surface 101 on the peripheral portion of the bottom surface 101 .

In addition, in FIG. 3 , the bottom surface 101 of the mold 100 is shown as a plane for convenience of description, but the bottom surface 101 of the mold 100 can be formed in an arbitrary shape according to the design of the rotary electric machine 1 .

Furthermore, in the manufacturing method of the rotating electric machine 1 according to the embodiment, after the frame 2 is loaded in the mold 100, the thermosetting resin 32 is filled in the mold 100, and the mold 100 is heated, and the inside of the frame 2 The stator core 3 is hot-fitted. As a result, the resin 32 is hardened, and the stator core 3 , the bobbin 3 a and the stator coil 31 are injected with the resin 32 . 4A, FIG. 4B, FIG. 4C and FIG. 4D will be described later in detail about the manufacturing process of injecting the stator core 3, the bobbin 3a and the stator coil 31 with the resin 32.

Next, the manufacturing method of the rotating electric machine 1 which concerns on an Example is demonstrated using FIG. 4A, FIG. 4B, FIG. 4C, and FIG. 4D. Next, the manufacturing process of injecting the stator core 3, the bobbin 3a, and the stator coil 31 with the resin 32 will be described. The other manufacturing processes are the same as the manufacturing method of a general rotating electric machine, and thus will not be described.

4A , 4B, 4C and 4D are schematic cross-sectional views illustrating a method of manufacturing the rotating electric machine 1 according to the embodiment. Furthermore, the mold 110 used in the steps described below has the same shape as the mold 100 shown in FIG. 3 except that the bottom surface 111 is processed into a predetermined shape.

That is, as shown in FIG. 4A , the mold 110 has a space formed by an annular bottom surface 111 on which the support pin 112 is erected, an inner wall 113 erected from the inner periphery of the bottom surface 111, and an outer wall 114 erected from the outer periphery of the bottom surface 111. .

Furthermore, as shown in FIG. 4B , when the stator core 3 , the bobbin 3 a and the stator coil 31 of the rotating electric machine 1 are injection-molded with the resin 32 using the mold 110 , the stator core 3 is shrink-fitted inside. The frame 2 is loaded in the mold 110 , and the stator coil 31 is wound around the stator core 3 .

Specifically, the frame 2 is loaded inside the mold 110 from the ring axis L direction of the stator core 3 so that the ring axis in the annular space formed by the bottom surface 111 , the inner wall 113 and the outer wall 114 is aligned with the ring axis of the stator core 3 . Axis L coincides.

At this time, the end surface of the stator core 3 in the ring axis L direction (the lower end surface of the stator core 3 in FIG. 4B ) is supported by the support pins 112 erected on the bottom surface 111 of the mold 110 .

Next, the lid body 120 closes the upper opening of the mold 110 . The cover body 120 is a member whose bottom surface is processed in advance into a predetermined shape and has an introduction hole 121 for introducing the resin 32 into the mold 110 .

Next, as shown in FIG. 4C , the resin 32 is introduced into the mold 110 through the introduction hole 121 of the cover body 120 , and the resin 32 is filled in the mold 110 . Furthermore, the mold 110 and the cover 120 are heated. As a result, the resin 32 is hardened, and the stator core 3 , the bobbin 3 a and the stator coil 31 are injected with the resin 32 .

At this time, in the mold 110, even if the heat of the heated mold 110 thermally expands the frame 2 and expands the inner diameter of the frame 2, since the support pin 112 supports the lower end surface of the stator core 3, the stator core 3 can be prevented from being damaged by the resin 32. The introduction pressure and so on are staggered in the direction of the ring axis L. Accordingly, in the manufacturing method according to the embodiment, it is possible to prevent unevenness in the relative positions of the frame 2 and the stator core 3 with respect to the ring axis L direction.

Next, in the manufacturing method according to the embodiment, as shown in FIG. 4D , the frame 2 in which the stator core 3 , the bobbin 3 a and the stator coil 31 are injected with the resin 32 is taken out from the mold 110 . As a result, the hole 30 extending from the end surface of the stator core 3 in the direction of the ring axis L to the outside of the resin 32 is formed at a portion of the resin 32 corresponding to the support pin 112 .

In this way, in the manufacturing method according to the embodiment, since the hole 30 is formed in the step of injecting the resin 32, when the injected frame 2 is taken out from the mold 110, not only heat radiation from the outer surface of the resin 32 remains in the resin 32, and can also dissipate heat from the hole 30.

Next, an apparatus including the rotating electric machine 1 according to the embodiment will be described using FIG. 5 . FIG. 5 is a schematic diagram showing an apparatus 200 including the rotating electrical machine 1 according to the embodiment. Furthermore, in FIG. 5 , the arrangement position of the rotating electric machine 1 inside the device 200 is shown. In addition, in FIG. 5, the cross section similar to the cross section of the rotating electric machine 1 shown in FIG. 2 is shown.

As shown in FIG. 5 , the rotating electric machine 1 is provided inside the device 200 . In the case of the device 200, although the heat generated from the stator coil 31 is easily stored inside the frame 2 of the rotating electrical machine 1, since the resin 32 of the rotating electrical machine 1 has a plurality of holes 30, it is possible to obtain heat from the resin 32. The outer surface and the hole portion 30 efficiently dissipate heat to the outside.

In addition, in the rotating electric machine 1 provided inside the device 200 , the temperature sensor 33 is provided in the hole portion 30 disposed on the center point side in the internal space of the device 200 . In the case of manufacturing the device 200 concerned, for example, after the rotating electrical machine 1 is installed inside the device 200, the hole part 30 closest to the center point in the internal space of the device 200 among the plurality of hole parts 30 Install temperature sensor 33 in.

Also, the temperature sensor 33 may be installed in a predetermined hole 30 in advance, and the installation angle of the rotating electrical machine 1 may be adjusted so that the distance between the hole 30 where the temperature sensor 33 is installed and the center point in the internal space of the device 200 is the shortest. .

In this way, by providing the temperature sensor 33 in the hole 30 arranged on the center point side in the internal space of the device 200, the temperature of the stator coil 31 can be detected through the stator core 3 from the hole 30 arranged near the center point of the internal space. The temperature is expected to be relatively high near the central point of the inner space.

Therefore, in the device 200, abnormal heating of the stator coil 31 can be quickly detected when the temperature in the hole 30 provided with the temperature sensor 33 exceeds the predetermined threshold before the temperature in the other hole 30 exceeds the predetermined threshold. , so reliability can be improved.

Furthermore, when a fan and a ventilation path for cooling the internal space are provided inside the device 200 , the temperature sensor 33 can also be provided in the hole 30 disposed near the lowest air head position in the internal space.

Accordingly, abnormal heat generation of the stator coil 31 can be detected earlier by using the temperature sensor 33 to detect the temperature near a position expected to have a relatively high temperature in the internal space of the device 200 .

In addition, in the case where the position having a relatively high temperature in the internal space of the device 200 is not near the center point of the internal space, the hole disposed near the position having a relatively high temperature can also be 30 is provided with a temperature sensor 33 .

Moreover, although the case where the shape of the hole part 30 provided in the resin 32 is cylindrical was demonstrated so far, the shape of the hole part 30 is not limited to a cylindrical shape. For example, the opening of the hole 30 in which the temperature sensor 33 is provided, which faces the outside of the resin 32 , can also be formed in a funnel shape.

Next, the process of attaching the temperature sensor 33 to the hole 30 a having an opening formed in a funnel shape will be described with reference to FIGS. 6A , 6B, and 6C. 6A, 6B, and 6C are cross-sectional schematic views showing the mounting process of the temperature sensor 33 according to the embodiment.

As shown in FIG. 6A , an opening facing the outside of the resin 32 in the hole 30 a where the temperature sensor 33 is provided among the plurality of holes 30 can also be formed in a funnel shape. As shown in FIG. 6B , when installing the temperature sensor 33 in the hole 30 a whose opening is funnel-shaped, first, the temperature sensor 33 is inserted into the hole 30 a.

Next, as shown in FIG. 6C, the heat-resistant adhesive 35 is poured into the hole 30a in which the temperature sensor 33 is inserted, and the volume of the adhesive 35 in the hole 30a increases and the adhesive 35 begins to flow into the hole 30a. The inflow stops when the funnel-shaped opening stagnates. And the temperature sensor 33 is fixed in the hole part 30a by hardening the adhesive 35 which flowed into the hole part 30a.

In this way, by forming the opening of the hole 30a where the temperature sensor 33 is mounted in a funnel shape, it is possible to easily determine whether or not a sufficient amount of adhesive has flowed into the hole 30a when the adhesive 35 flows into the hole 30a. Binder 35.

In addition, according to the hole portion 30a, even if the amount of the adhesive 35 that flows in is slightly large, the adhesive 35 that has flowed in too much can be retained in the funnel-shaped opening, so that sticking can be prevented. The agent 35 overflows from the hole portion 30a and adheres to other members.

In addition, although the rotary electric machine 1 in which the stator core 3 is integrally formed in the circumferential direction has been described so far, the stator core 3 may be composed of a plurality of split cores. Next, a case where the stator core is composed of a plurality of split cores will be described with reference to FIG. 7 .

FIG. 7 is a schematic diagram showing a rotating electric machine 1a in which the stator core is composed of a plurality of split cores 36 according to the embodiment. In addition, in the rotating electric machine 1 a shown in FIG. 7 , the same reference numerals are assigned to the same components as those in the rotating electric machine 1 shown in FIG. 2 . In addition, FIG. 7 shows the rotating electric machine 1 a in which a part of the resin 32 is excluded for the purpose of explaining the split core 36 .

As shown in FIG. 7 , the stator core of the rotary electric machine 1a is composed of a plurality of split cores 36 that can be split in the circumferential direction. In this stator core, bobbins 3 a around which stator coils 31 are wound are attached to respective split cores 36 .

Therefore, in the case of the rotating electric machine 1 a including the split cores 36 , the hole 30 is provided for each split core 36 in the resin 32 injection-molded for the split cores 36 , the bobbin 3 a , and the stator coil 31 . Accordingly, in the rotating electrical machine 1a, the heat generated by the stator coils 31 wound on the respective split cores 36 can be dissipated from the holes 30 corresponding to the respective split cores 36 .

Furthermore, in the case of the rotating electric machine 1a including the split cores 36, the holes 30 are provided so as to extend from the circumferential center portion 37 of each split core 36 on the end surface of the stator core in the ring axis L direction to the outside of the resin 32.

Thus, according to the rotating electric machine 1a, heat generated by each stator coil 31 can be efficiently dissipated to the outside of the resin 32 because the heat can be dissipated uniformly from the circumferential center portion 37 on each of the split cores 36 .

However, when the holes 30 shown in FIG. 7 are provided, injection molding is performed using a mold resin 32 provided with support pins on the bottom surface. Section 37.

Therefore, when filling the mold with resin 32 , the support pins provided on the bottom surface of the mold support the circumferential center portion 37 of each split core 36 on the end surface of the stator core in the ring axis L direction.

Thus, in the rotary electric machine 1a, when the resin 32 is injected, even if the inner diameter of the frame 2 expands due to the thermal expansion of the frame 2 by the heat of the heated mold, the split cores 36 can be prevented from shifting in the direction of the ring axis L.

Furthermore, each split core 36 may be constituted by a split core that is further divisible in the radial direction of the stator core. That is, each split core may be composed of an inner core constituting the inner peripheral portion of the stator core and an outer core constituting the outer peripheral portion. In this case, in the resin 32 that injects the stator core and the stator coil 31 , hole portions 30 corresponding to the respective inner cores and respective outer cores are provided.

Furthermore, when the split core is composed of an inner core and an outer core, injection molding is performed using a mold resin 32 with support pins standing upright on the bottom surface, and the support pins support the inner cores and the outer cores. Thereby, during injection molding, it is possible to prevent each inner core and each outer core from being shifted from the frame 2 in the ring axis L direction.

In addition, in the above-mentioned embodiment, although the case where the temperature sensor 33 is provided in the hole portion 30 has been described, it is also possible to provide a sensor for detecting the vibration of the rotating electric machine 1 in the hole portion 30 where the temperature sensor 33 is not provided. vibration sensor. In this way, in the rotating electrical machine 1 according to the embodiment, the vibration sensor can be installed without separately providing a space for installing the vibration sensor.

In addition, although the thermosetting resin 32 was used in the above-mentioned embodiment, the resin 32 may be a thermoplastic resin. In this case, in the rotary electric machine 1, when the stator core 3, the bobbin 3a, and the stator coil 31 are injected with the resin 32 at the time of manufacture, the temperature drop of the resin 32 that is heated and softened by the hole 30 can be shortened and hardened. The time required so far shortens the manufacturing time.

Claims (13)

1. an electric rotating machine is characterized by,

The resin that the stator core and the stator coil of ring-type carried out injection moulding has from the annulate shaft direction end face of said stator core and arrives the outside hole portion of this resin, and the stator core of ring-type is fixed on framework inside, and stator coil is arranged in the said stator core.

2. electric rotating machine according to claim 1 is characterized by,

Has a plurality of said hole portion.

3. electric rotating machine according to claim 1 and 2 is characterized by,

A plurality of positions of the circumference of said hole portion from the annulate shaft direction end face of said stator core are respectively towards said resin outside opening.

4. according to any described electric rotating machine in the claim 1 to 3, it is characterized by,

Said hole portion is set up the pore-forming direction of principal axis and is parallel to said annulate shaft direction.

5. according to any described electric rotating machine in the claim 1 to 4, it is characterized by,

Said stator core is made up of a plurality of iron cores of cutting apart,

Said hole portion is arranged on each said cutting apart in the iron core.

6. electric rotating machine according to claim 5 is characterized by,

Said hole portion said from the said annulate shaft direction end face of said stator core cut apart circumferential central portion unshakable in one's determination, and to arrive said resin outside.

7. according to any described electric rotating machine in the claim 1 to 6, it is characterized by,

Said resin has the part of giving prominence to towards this annulate shaft direction from the annulate shaft direction end face of said framework,

Said electric rotating machine possesses the carriage of the periphery of annulate shaft direction end face side that is arranged on said framework and the ledge that covers said resin.

8. according to any described electric rotating machine in the claim 1 to 7, it is characterized by,

In the portion of said hole, be provided with temperature sensor.

9. electric rotating machine according to claim 8 is characterized by,

Said hole portion forms funnel-form towards the outside peristome of said resin.

10. according to Claim 8 or 9 described electric rotating machines, it is characterized by,

Said temperature sensor is arranged in the said hole portion beyond the zone that the lead-in wire that is disposed at said stator coil is configured.

11. the manufacturing approach of an electric rotating machine is characterized by, and comprising:

On said annulate shaft direction, in like bed die, load the operation of said framework; Periphery is greater than the external diameter of the tubular framework of the stator core that the ring-type that is provided with stator coil is arranged in internal fixation; With the diameter of this stator core in week more erect the supporting pin that is provided with the annulate shaft direction end face that supports said stator core on the circlet shape bottom surface; Possess the inwall that is provided with by interior Zhou Shuli and erect the space that the outer wall that is provided with and said bottom surface form from the periphery of said bottom surface from said bottom surface

And the operation of said stator core and said stator coil being carried out injection moulding through potting resin in the said mould that is filled with this framework.

12. a device that possesses electric rotating machine is characterized by,

The resin that the stator core and the stator coil of ring-type carried out injection moulding has from the annulate shaft direction end face of said stator core and arrives the outside hole portion of this resin; The stator core of ring-type is fixed on the framework inside that electric rotating machine possesses, and stator coil is arranged in the said stator core.

13. the device that possesses electric rotating machine according to claim 12 is characterized by,

Said electric rotating machine is arranged on the inside of said device,

Be provided with temperature sensor in the said hole portion of the central point side in being disposed at the inner space of said device.

Images