JPS59136037A - Rotor for input/output electric machine, method of producingsame rotor and electric machine with same rotor - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improved rotor for an input/output electrical machine, a method of manufacturing said rotor, and an electrical machine including said rotor.

So-called counter-rotating or counter-rotating rotary machines are already known, in which a stationary part, ie a stator, is arranged with an air gap in between a rotating part, ie a rotor, located outside of it.

Each part of the machine is known to have the following features: Its bearing, which is contained within the center of the cover or shield which delimits the machine on its axis, is formed as a unitary component with the rotor and rotates as one piece. On the other hand, when the rotor, shield, and bearing rotate, the shaft is stationary, integral with the stator, and perfectly centered with respect to the outer cylindrical surface of the stator. There is.

At both or one end of the shaft, connections are made to support the associated machinery, and through a hole in the shaft a cable is taken out for carrying the current inside the winding.

In such cases, the following difficulties are known to hinder the progress of machines.

The rotating bearing occupies the space in which the winding head of the stator is located.

The heat emitted from the inner stator is difficult to dissipate.

It is difficult to assemble the rotating bearing seat truly concentrically to the cylindrical inner surface of the rotor and the outer surface of the stator.

The closed assembly of the various rotating parts 91 poses a problem intensive and, depending on the connection means used, is considerably time consuming.

The above-mentioned conventional problems are solved by the present invention from various angles.

In one embodiment, a counter-rotatable rotating electric machine of the type having a stationary shaft comprises a toroidal member and two covers, the toroidal member having a laminated core and a shorting ring casting. an adhesive surface for adhering to the cover, each cover having a central portion to which a bearing is fixed and rotates at the same time; and a surface in contact with the adhesive surface of the annular member; , an assembly member is provided for adhering the annular member and the cover.

According to a preferred embodiment, the present invention provides a deformable member that is incorporated into the annular member as a member for adhering the annular member and the cover, and is deformed and supported by a sheet formed on the cover. Possible protrusions are provided.

As a modification, in the present invention, the respective surfaces of the annular member and the cover may be bonded with cement.

As another modification of the present invention, both surfaces are fixed via means for removing the rotor.

The removal means may be a scree or internal thread or conventional means for tightening the cover onto the annular member.

Preferably, the annular member is provided with a fin-like member for ventilation using centrifugal force, and the cover is provided with ventilation holes.

Both ends of the fin-like member are formed with surfaces that are bonded to the cover, and preferably, surfaces of the annular member and the cover that are bonded to each other make adhesion to each other more effective. Because of this, it has a restricted shape. Generally, the annular member is made of aluminum or an alloy.

According to a preferred embodiment of the invention, the central part of the cover, which rotates together with the bearing, is arranged coaxially outside the area occupied by the winding head. Thereby, a winding drawn out from one of the grooves of the stator is inserted into the other groove according to the shortest route represented by the chord. As a result, it is possible to reduce the number of windings used in the head, and thus its dimensions, the length required for winding, the weight of the windings used and its resistance value, increasing the electrical efficiency of the machine. can be improved.

In yet another preferred embodiment, the dissipation of heat generated in said winding is drawn from the outside air by a plurality of small radial fins formed in said seal or cover and provided at the same angle as the fan flats. This is done by directing cold air axially through the head.

According to yet another variation of the invention, the fin-like portion directs air from one surface of the stator to the other surface through an annular slit in the void, and the winding is wound around the fin. A groove in which the groove space is not completely filled by the winding can provide ventilation to the winding where heat is generated.

The method of the present invention for manufacturing a rotor for an input/output rotating electric machine of the type having a stationary shirt track consists of assembling the rotor laminated core and inserting two shorting rings of conductive metal (generally aluminum) into the grooves. and a deformable protrusion on said cover to form a surface for adhesion; providing two covers, each having a center portion, forming together with a seat for receiving the deformable protrusions; a step of fitting; assembling the cover onto the annular member while fitting the bearing into the machine shaft, joining the surface of the annular member and the surface of the cover, and attaching the member to each sheet of the cover; inserting a protrusion into the annular member; deforming the deformable protrusion in order to join the annular member and the cover and strengthen the assembly;
: Constructed. Said possible protrusions can be replaced with respect to the function of consolidation by other customary means, such as screws or adhesives, without making the manufacturing method of the invention obvious.

In order to be considered a closed state for the electrical machine, the invention imposes a limit on the number of air outlet channels around the holes in the fin and the shorting ring sloping towards the shield. . Due to their shape, the channels have a diameter of 1 mm and a diameter of 3 mm.
The screaming goal body invaded the stationary part regardless of the rotor! Prevents the connection from occurring.

Particularly noteworthy about the rotor of the present invention is that in order to complete the rotor, means are provided to ensure assembly of each part, and the inner surface of the annular member is (1) to be equidistant from the outer surface of the stator so as to be concentric with the center of the shaft.

In order to better explain the novel features of the above means, let us review the current state of affairs in this technical field.

It is not difficult to construct the rotor from circular rings stamped from sheets of iron and from perfectly aligned inner and outer members.

It is difficult to form a shorting ring by casting across the two planes on the punched and punched laminated core, and to flow the casting material to fill the grooves provided in the laminated core to connect them. It's not a bad thing.

forming it into the desired 41J shape, forming it with fins or other shapes for ventilation, and concentrically about the annular axis formed by the laminated core to assemble the whole part. It's not difficult to form.

Furthermore, insert the key connected to the shaft into the inner hole,
It is not difficult to punch out the iron sheet disk to make the stator so that it is concentric with the outside and by this key.

A feature of this invention is that an annular member is first provided around a stator that is positioned in advance by sliding on a shaft, and a gap is provided to separate the stator and the annular member. This spacing is set, for example, by an insert or prong that is inserted between the outside of the stator and the inside of the rotor, and which is later removed. Thereafter, a cover is provided around the annular member and fixed by a special member in order to position the annular member completely concentrically around the stator. The cover is provided with a pre-formed rotating or planar bearing integrally fitted onto the outside of the shaft, and rotates as the shaft rotates, so that the annular member joined to the cover also rotates.

According to this invention, the cover can be joined on the annular member according to areas that can contact each other, and the cover can be joined to the annular member that is located truly concentrically with the stator. After being placed facing each other, a deformable or knockable protruding member or other member on the annular member is used to deform the sheet formed on the cover to join them together. The rotor having the annular member and the two covers functions completely as a rotor without using a seat portion or any mechanical means between the annular member and the cover, and the rotor functions as a true rotor. It can be rotated around the axis.

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows a reversible rotating electric machine of input/output type with a rotor according to the invention. The lower half of the figure shows an elevation of the machine, and the upper half shows a sectional view taken along a plane containing the axis. Some parts of the machine are not relevant to this invention, but are highlighted for convenience in explaining the invention.

Stator 11 has windings, heads 12' and 12 of which are shown. The shaft 13 extends in the center of the stator, with its cylindrical outer surface fixing the stator concentrically, and projects outwardly from two ends 13' and 13''.

The supports 14' and 14'' are joined to the shaft on the outside.

All other parts also rotate, forming the entire rotor of this invention. Reference number 15 indicates the laminated core of the rotor, its grooves (
conductive metal (usually aluminum) f:
Two shorting rings 16' and 16'' are inserted and cast to meet the electrical requirements. Preferably, but not necessarily, at least one ring may be formed, as shown in the figure. , centrifugal force applying fins 17 define channels for the air to flow from the inside to the outside of the motor. Said channels are bounded on their respective outer sides by shields 18. The shield 18 is formed at an extension of the cover 19'.

In a particular embodiment of the invention, said channels have sloped portions, which are of a convoluted shape, for example objects such as pins, as indicated by the reference numeral 20, are inserted into the motor; Alternatively, the objects are carried by the channels only towards the walls of the rotor, preventing them from reaching the stator parts. The dimensions and arrangement of the channels are 3
■ The diameter of the pole is determined so that it cannot rotate through the channel.

Another extension 21, shown in dotted lines in the figure, can be formed in said cover 1y' and can be connected to any other member to be driven, and can also be used as a 77 motor by itself. Grades can also be formed.

Cooling air holes are formed in the regions 2-2' and 22N of the covers 19' and 1f, and as will be described later, air flows through the areas 2-2' and 22N.
The fin-like member 17 releases the liquid to the outside by applying centrifugal force. .

The central portion 23' near the rotating or planar bearings 24' and 24'' and the winding heads 12' and 12''
centered on the axis outside the area occupied by the

The support members, shown briefly in the figure by support rods 25' and 25'', are made of the same casting as that forming the shorting ring. Reference numeral 26 indicates a cable for supplying current to the machine. shows.

FIG. 2 shows the parts for manufacturing the rotor of the invention before their assembly has taken place.

The covers, designated by reference numerals 19' and 1f, are connected to said central parts 23' and 2. ? Bearing 24 pre-installed in
' and 24'' and seats 27' and 27'' provided for inserting the support rods 25' and 25'' or other supporting members.

The stator 11 is finished in advance and is joined to the shaft 13. Reference numeral 29 designates a prong or interposer of selected shape, which serves to create a temporary gap between stator and rotor during the assembly process. This is drawn out through a slit 30 formed in one of the cups shown in FIG.

The rotor is manufactured through the following steps.

First, the annular member 15 is slid onto the stator 1 and is separated from the stator 11 by a predetermined distance by the insert 29 . The insert 29 is removed after the machine is assembled. The two clicks - 19' and 1
f is then brought close to the toroidal member by sliding 24//i on the shaft with a pre-assembled bearing 24' and the seat 2 is moved onto the toroidal member.
7' and 27 are arranged in parallel with the support rods 25' and 25''.

The connection between the shaft 13 and the bearings 24' and 24'' is such that the connection between the shaft 13 and the bearings 24' and 24'' is such that the shaft 13 and the bearings 24' and 24'' are connected together with the removable member 29 at a central position with the outer surface of the stator 1 and on the shaft. In order to pay attention to the setting of the center position of the annular member 15, it is necessary to set the seat 27' and 27r'' and the support rods 25' and 25'' so that there is a sufficient space between them. , which is important from experience.

suitable bonding surfaces 31' and 31'' formed on said cover;
are arranged in parallel to and bonded to the surfaces 28' and 28'' of the annular member.The surfaces of the two may be appropriately roughened or have a ridge or groove shape to improve adhesion. I can do it.

Finally, the bracket is stably fixed to the annular member, and at this time, the cover is fixed to the support rods 25' and 25''.
Alternatively, by cutting the tip of another deformable member short, or by using the other supporting means mentioned above, the deformable member is arranged so as to be located at the center position e relative to the stator. In the final step, the inclusion 29 is removed.

The specifically formed surfaces on the rotor ring and the corresponding surfaces of the cuffs are shown in FIGS. 3 and 4, and the joint between the cuffs and the annular member is shown in FIGS. Strengthen the bond between.

A roughened surface 28 formed on said ring 16', for example by special means of radially scoring.
' faces the corresponding surface 31' of the cover. The surface 28' of the cut is scored or otherwise roughened with concentric cross-shaped notches.

A similar thing occurs between the ring 16P' and the six holes -1f.

The support member 25' is cut to be short and aligned with the sheet 27' so that the surface of the force/glue and the corresponding surface of the ring are bonded.

FIGS. 4 and 5 show more clearly the arrangement of the invention for admitting cooling air into the machine via a cover or two covers.

By means of a number of spokes bent to form a number of fins 33 oriented in the direction of rotation of the machine and angled to move the external air along the axis like a propeller with respect to the winding head. , radial cut portions 32 that approach each other with a space are formed in the disk portion constituting the cover.

The length of the mJ cut portion is determined by the thickness of the disk portion of the cover.

A ventilation hole 34 having a diameter smaller than 1 mm is provided between the fins to prevent an object 20 such as a bottle having that diameter from entering the motor and coming into contact with it. established in

Figures 6 and 6A show the current path in the form of an insulated wire on the winding spatula r which divides the stator into two planes with respect to the axis to form the winding. .

FIG. 6A shows the current path of a conventional machine, in which a largely insulated ring 35 has a space 36 in the area around the shaft 13 for locating the central part or rotor bearing. The space is arranged so that the space occupies most of the head or surface of the stator 15, although it does not affect the outside as claimed in this invention.

FIG. 6 schematically shows the passage of a machine incorporating the rotor of the invention. In this figure, bearings 24' and 24 are provided so as to move the area further outward on the axis so as not to interfere with the area in which the winding head is extended.
“A central portion 2 as shown in FIGS. 1 and 2, including
3' and 23''.

In this way, the insulating ring 3 of the shaft 13
7 is closely held on the shaft, allowing the entire surface of the stator to be clear.

In Flg, 6AvC, which shows a normal structure, one groove 3
The wire bundle 38 drawn out from the wire 9 requires a passage along the circular arc 40 and is inserted into the other groove 4 .

FIG. 6 shows the passageway of the invention, in which the bundle 42 pulled out of said groove 43 is introduced into the opposite groove 44. FIG.

This means that the conventional circular arc also forms a short straight path.

Furthermore, as is apparent from the figures, the invention leaves room for a bundle of abutting wires, not shown, which are withdrawn from groove 45 and introduced into groove 46. It is provided coplanar on the side of the aforementioned bundle 42. On the other hand, in the normal configuration shown in Ftg, 6A, the bundle pulled out from the groove 47 and folded back through the groove 48Vr is
A passage must also be formed on the lower plane continuous with respect to 8. Therefore, it is necessary to significantly increase the axial space of the winding head.

Improvements such as those described above can revolutionize the structure of such rotors, lowering their manufacturing costs and increasing their efficiency.

As a special case, and without departing from the unity of the invention, the machine may, for example, provide a seal between the ends of said central part with sufficient sealing to prevent the ingress of a saw. Other improvements, such as reducing the length or removing and reassembling the rotor, can be made without changing the gist of the invention, but their description is omitted. be.

[Brief explanation of the drawing]

FIG. 1 shows the upper half of the rotor of the invention assembled and supported on a stator in cross-section and the lower half in elevation, and FIG. 2 shows half of each part in cross-section. , the other half is symmetrical. That is, an internal stator that is integrally formed with the shaft;
A cover or shield that is fitted from the end of the shaft and is integral with the bearing is provided around the stator, and a predetermined gap is maintained between the stator and the stator by a probe, and by riveting. The toroidal member is shown being assembled. FIG. 3 is a partial cross-sectional view of the ring taken along the line ■-■ in FIG.
The air release channels formed between the upper fins of the song are shown. FIG. 4 shows a partial cross section of the cutter taken along the line ■-■ in FIG. 2, showing the air inflow hole through the cover and a part of the bonding surface, ■ in Figure 4
Figure 6 is a cross-sectional view along the line -■, showing the empty flow hole through the cover, and Figure 6 is an elevational view showing the stator half in outline, showing the length of the copper wire. 6A shows half of a stator with a conventional head. It is a front view. 15... Annular member, 19', 19"... Cover,
16', 16"...Short ring. Applicant's agent Patent attorney Takehiko Suzue Procedural amendment G
Formula) 1. Ul, Han 9.1-1□ Director of the Japan Patent Office Kazuo Wakasugi 1 Indication of the case Japanese Patent Application No. 1982-201175 2 Title of the invention 3 Relationship with the amended person case Patent applicant Eurobian Electric Co., Ltd. Motors Design and Engine Aling Anstalt 4, Agent Resident Jv1 17th Mori Building, 1-26-5 Ri-1 Toranomon, Minato-ku, Tokyo January 31, 1980 6 Subject of amendment Specification (simple drawings) Explanation column) 1 Drawing Surface 7 Contents of correction

Claims (1)

[Scope of Claims] 1. An annular member and two covers are formed, the annular member is formed with a laminated iron core, a short-circuit ring casting, and a surface for adhering the cover, and the cover is formed into an annular member. an input/output rotating electric machine of the type having a stationary shaft, each having a central portion, each of which has a fixed bearing for rotation and a surface corresponding to the surface of said toroidal member; rotor. 2. The annular member further includes a support member made of a deformable member that is deformed to reinforce the annular member, and a cover member forming a portion for holding the support member. Claim 1 characterized in that
Rotor as described in section. 3. The rotor according to claims 1 and 2, wherein the supporting member of the annular member is integrally formed by casting. 4. The rotor according to claims 1 and 2, wherein the annular member and the surface of the cover are arranged so as to be in close contact with each other. 5. The annular member is provided with a fin-like part that allows ventilation to be carried out by centrifugal force, and the said cup is provided with an opening that allows ventilation to be carried out.
The rotor according to paragraphs 1 and 2. 6. The rotor according to claims 1 and 2, wherein the material of the annular member casting is either aluminum or an alloy. 7. The annular member and the force/4- are fixed to each other by adhesion or friction by adhesion or friction on mutually formed surfaces concentrically with the rotating shaft. The rotor according to item 2. 8. Adhesion between the annular member and the clip is performed by deforming or shortening a support member formed on the annular member. rotor. 9. The rotor according to claim 1, wherein the annular member and the cover are bonded together using an adhesive. 10. The rotor according to claim 1, wherein the annular member and the cover are bonded together by screws k having various internal threads, although not limited thereto. 11. The ventilation hole formed in the disc-shaped member is arranged as an axial fan to draw air inwardly against the head of the winding on the stator. The rotor according to item 5. 12. The rotor according to claim 5, wherein the ventilation holes formed in the annular member are formed in a concave shape. 13. A convoluted shape for preventing solid matter from entering the motor is formed on the shorting ring channel, which is inclined outwardly with respect to a symmetrical plane of the laminated core provided perpendicularly to the axis. 13. The rotor according to claim 12, wherein the rotor is made by forming a fin-like casting. 14. The hole has a restricted shape so as to prevent an object such as a bottle having a limited diameter and a sol having a limited diameter from entering. The rotor according to item 11 or 12. 15. The rotation according to claim 1, characterized in that the cover is provided with a rotation bearing located in a plane perpendicular to the axis in an area extending outward from the head P of the fixed winding. Child. 16. The patent characterized in that the bundle of windings is pulled out of one groove of the stator and inserted along the shortest route into the opposite groove provided on the head of the winding. A rotor according to claim 15. 17. The increase in the space provided for the windings makes it possible to provide two or more bundles of windings in parallel on the same plane, and the axis required for the winding head is increased. Claim 1 characterized in that the space above is reduced.
The rotor according to item 6. 18. Rotor shown in detailed description and drawings. 19. Providing a laminated rotating iron core, forming two shorting rings with a conductive metal mold in the grooves of the iron core, and forming an annular member having a surface for adhering to the cover; the bearing is fixed; providing two covers, each having a center portion that is attached to the annular member, and having a surface that adheres to the surface of the annular member; fixed to a shaft in advance and held at a distance with the shaft as a center by an intervening member or a probe; sliding a rotor onto a stator of an electrical machine to be used; sliding the bearing to position a cover in contact with the annular member on the machine shaft; Producing a rotor for an input/output rotating electric machine of the type having a stationary shaft, comprising the steps of adapting to the surface of a toroidal member; removing said inclusion or probe; and making the bond permanent. Method. 20. Adhesion of the cover is fixed on at least one of the deformable supports of the shorting ring, forming a seat part on the corresponding cover to accommodate the support; inserting the part into the sheet part,
bringing the cover into close proximity to the toroidal member; and deforming the support so that the toroidal member and the cover are secured to each other and the assembly is rigid. A method for manufacturing a rotor according to claim 16, characterized in that: 21. The method for manufacturing a rotor according to claim 20, wherein the deformable support portion is attached to a corresponding seat with a space margin prior to deformation. 22. The adhesion is permanently effected by means of an adhesive inserted between the adhesion surface of at least one ring and the corresponding snap.ff: Claim 19 Method of manufacturing the rotor described. 23. The method for manufacturing a rotor according to claim 19, wherein the adhesion is performed by screwing or bolting so that the assembly can be returned to its original state. 24. An input/output rotating electric machine having a rotor according to claim 1 as described in the detailed description and shown in the drawings. 25. An input/output rotating electric machine manufactured by the manufacturing method according to claim 19 as described in the detailed description and shown in the drawings.