KR20020025061A - Rotor - Google Patents

Abstract

The present invention relates to a new rotor having an upper part and a lower part, the lower part being provided with a web mechanically connected to the upper part. However, this type of connection has the disadvantage that the tolerance is very small and not very stable. The present invention provides a rotor (1) having a ring (42) for engaging a magnet (40) in a shape and a forced fit to a tubular part (38) disposed on a lower part by pressing the web (45). . The lower part 4 forms the rotor 1 together with the rotor shaft 7 and the upper part 64.

Description

Rotor

There is already known a rotor with a magnetic holder in UP-PS 4,591,749. The magnetic holder consists of an upper part, a lower part and a web. The upper part and the lower part are interconnected by mechanical deformation of the web. However, this type of connection is not only very stable, but also a very narrow range of tolerances are possible in the assembly of the rotor.

The present invention relates to a rotor according to the type of claim 1.

1 shows a lower part with a rotor shaft as part of the rotor according to the invention.

2 shows a tubular part with assembled webs, magnets and rings;

3 shows the ring;

4 shows the lower part with assembled tubular parts, webs, magnets and rings;

5 shows the rotor according to the invention in an assembled state;

6 is a radial cross-sectional view taken along the line VI-VI of FIG. 4.

FIG. 7 is an axial cross-sectional view taken along the line VII-VII of FIG. 5. FIG.

8 shows a tubular part in a second embodiment of the rotor according to the invention;

9 shows a tubular component with a support liner and a magnet.

10 shows a magnet surrounded in a tubular part by a web;

11 shows a ring and web secured to a tubular part;

12a shows an upper part or a lower part;

FIG. 12B shows the upper part or the lower part disposed on the tubular part; FIG.

FIG. 13 shows the arrangement according to FIG. 11 with the upper part or the lower part;

14A shows the entire rotor in an unassembled state.

14B shows the rotor with the rotor shaft assembled;

15 shows the rotor according to the invention with the rotor shaft in a fully assembled state;

In contrast, the rotor according to the invention having the features of claim 1 has the advantage of assembling the rotor in a simple technique and manner.

Furthermore, other preferred structures and improvements of the rotor referred to in claim 1 are possible through the method described in the dependent claims.

In securing the magnet to the rotor using the web, it is meaningful in that the web forms a shape fit with the magnet so that the force can be distributed over a large area while the rotor is driven.

It is advantageous in that the ring does not protrude above the circumferential surfaces of the web and the magnet because each web has a bracket that engages the ring.

Since the upper part of the rotor is formed in the form of a disk, it is advantageous in that the upper part can be easily manufactured.

It is also advantageous in that the lower part is fixed to the rotor shaft.

In particular, since the web and magnet are in contact with the tubular part, the web and magnet can be in close contact with the tubular part by a ring.

In securing the web to the tubular part, at least one web is advantageous in that it utilizes lugs that engage the recesses formed in the surface of the tubular part.

The tubular part and the lower part can be advantageously assembled since the tubular part has a radial bracket which can be inserted into the corresponding slot of the lower part towards the central axis. Due to this, the tubular part is also stable on the lower part.

It is advantageous in that the lower part has elastic ribs projecting in the radial direction to compensate for the tolerance between the tubular part and the lower part.

The upper part and the lower part can be simply coupled by engagement coupling.

It is advantageous in that the web is made integral with the upper part or the lower part in order to reduce the parts to be assembled.

If the tubular part is a tubular ring, the number of parts to be assembled can be simply reduced and assembly can be simplified.

In order to adjust the imbalance of the rotor, the lower part is advantageous in that it has a hole into which a balancing weight can be inserted.

If the ring is formed as an elastic ring, the rotation moment of the rotor can be advantageously transmitted to the rotor shaft.

In addition, it is advantageous because the web is axially stable when the web has a holding web extending through the hole of the tubular part.

The web is squeezed to the magnet and the tubular part by forming a bayonet joint between the ring and the holding web and thus fixed radially.

Two embodiments of the present invention are schematically illustrated in the drawings and described in detail below.

1 shows the lower part 4 of the rotor 1 (see FIG. 5) with the rotor shaft 7. The rotor shaft 7 is inserted into and fixed to the lower part 4, and has a central axis 9 which forms a central axis for the lower part 4 or the rotor 1, for example. The lower part 4 formed in the step shape has a cylindrical part 12 and has a radial bracket 15 connected to the axial end of the cylindrical part. Further, the lower part 4 is made of plastic or metal, for example.

At least one slot 24 is arranged on the outer surface 20 of the cylindrical part 12, which slot extends in parallel with the central axis 9. In this embodiment, four slots 24 are configured.

In addition, at least one rib 36 is arranged on the outer surface 20, the rib extending parallel to the central axis 9. The cylindrical part 12 has at least one elastic or elastic / plastic deformable elastic rib 28, which serves to compensate for the tolerance of the tubular component 38 (see FIG. 4) to be assembled. . The elastic ribs 28 may be disposed on webs forming the outer surface 20, ribs 36, or slots 24.

The radial bracket 15 has a hole 31 into which the counterweight can be inserted, which can adjust the rotor installed in the electric motor. The radial bracket 15 has a rotating slot 34 at least partially pivoted towards the cylindrical part 12, which is configured in the form of a shape fit with the part installed in the cylindrical part 12.

2 shows a tubular component 38 in which at least one magnet 40 is disposed and connected by at least one web 45. In this embodiment four magnets 40 and four webs 45 are used, which are alternately arranged on the tubular part 38, wherein at least one web of the webs 45 is a tubular part ( 38) Not in contact with Since the magnet 40 and the web 45 have a structure in the form of a dovetail, for example, in the side surface extending in the direction of the central axis 9, the sides of the magnet 40 and the web 45 are respectively Interlock with each other in shape fit. The tubular part 38 also consists of a plurality of parts.

The web 45 protrudes over the magnet 40 along the axial direction, for example in the form of a shoulder towards the tubular part 38 and at least one axial bracket that engages the ring 42. 48). The bracket 48 may be formed at both axial ends of the web 45, for example.

The ring 42 hangs on the front of the magnet 40 and therefore does not protrude above the web 45 or the outer periphery of the magnet 40. The ring 42 also secures the magnet 40 to the tubular component 38 with a strong compressive force that can exert a radial force on the web 45, which forces the web 45 to the magnet 40. It is the power to transmit.

The magnet 40 is for example formed in the shape of an arc and depends on the shape of the tubular part 38. Since the magnet 40 and the web 45 are configured in a shape fitting form, the force can be uniformly distributed on the support surfaces of the magnet 40 and the web 45 while the rotor 1 is driven.

The bracket 48 has, for example, at least one nose 49, which axially holds the magnet 40 because it protrudes above the front of the magnet 40. As an example, in FIG. 2, the bracket 48 has two noses 49. For example, the bracket 48 may be similarly installed on the opposite front side of the web 45. The tubular component 38 is advantageously installed in the form of a tubular ring and having at least one ridge facing towards the central axis 9. In addition, the tubular component 38 is made of, for example, plastic or metal. If the tubular part 38 is magnetic, this tubular part serves as a ground part.

3 shows the ring 42. The ring 42 is made of, for example, an elastic ring 42, and is formed in a circle in an undeformed state, for example (not shown). The inner diameter of the ring 42 is larger than the outer diameter of the tubular component 38 and smaller than the diameter of the circumference determined by the outer surface of the axial bracket 48. By means of an assembly gripping device, a force is exerted on the ring 42 in the direction of the arrow 55, for example at four points 56 of the ring 42, the force across the outer diameter. For example, the ring 42 can be pushed over the axial bracket 48 of the web 45 because it is uniformly distributed. The ring 42 is beyond the axial bracket 48 because it remains flat between the points 56. The removal of the force causes the elastic ring 42 to revert back to its original shape, thereby generating a force that engages the web 45 in the direction of the central axis 9. In the present invention, for example, two rings 42 are provided which are installed at both axial ends of the rotor. In addition, a ring 42 is provided when the web 45 is made integral with the upper part 64 or the lower part 4. The ring 42 may also be formed as a rigid ring 42, which is supported by the axial bracket 48 of the web 45.

In FIG. 4, the individual parts shown in FIGS. 1 and 2 are shown assembled. Also in this figure the upper part 4 is inserted into the tubular part 38 of FIG. 2 provided with a magnet 40, a web 45 and an elastic ring 42. The radial ridges 52 of the tubular part 38 are inserted between the slots 24 of the lower part 4. Due to these ridges 52, the rotation moment of the magnet 40 generated in the external magnetic field of the stator constituting the electric motor is transmitted to the lower part 4 and the rotor shaft 7 thereby. The parts according to FIG. 2 abut the front of the tubular part 38. The tubular component 38 is joined in a shape fit form with the lower component 4 by the deformed elastic ribs 28. The rotary slot 34 and the bracket 15 cover the non-circular portions of the ring 48 and the bracket 48 of the web 45 in the assembled state, thus forming a smooth surface so that the rotor rotates in liquid when the rotor is rotated. Blade loss of (1) can be prevented. At the same time, the ring 42 is fixed in the axial direction. The lower part 4 has, for example, four hooks 59, which engage in engagement with the upper part 64 (see FIG. 5).

5 shows the rotor 1 according to the invention with the upper part 64 assembled. The upper part 64 is formed, for example, in the form of a disk and has a corresponding hole for engagement in the through form with the hook 59 of the lower part 4, as a result of which an engagement engagement is achieved and the upper part is formed by this hole. The part 64 secures the tubular part 38 with the magnet 40, the web 45 and the elastic ring 42 on the lower part 4. The upper part 64 also has a hole 31 into which the counterweight can be inserted, for example. The upper part 64 has a corresponding rotary slot 34 for the same purpose as the bracket 15 of the lower component 4, which is a tubular component 38, a magnet 40, a web 45. And the other front end of the elastic ring 42.

6 is a radial cross-sectional view taken along the line VI-VI of FIG. 4. 4 is, for example, a cross-sectional view of the same web 45 over its entire length. The web 45 forms a shape fitting shape with the magnet 40, and forms a round circumference, for example. In addition, the at least one web 45 has at least one lug 67, which can engage the corresponding recess 68 of the tubular part 38 so that the web can be held in place. . At the same time, the lug 67 serves to position the magnet 40 in the tubular part 38. The recess 68 for engaging the lug 67 is not only manufactured by, for example, stamping, but also by this stamping method the radial ridge 52 of the tubular component 38. In this case, the material of the recess 68 should be pressed against the center line 9. The ridge 52 of the tubular component 38 engages with the slot 24 but the front face does not necessarily have to be arranged on the outer surface 20 of the lower component 4. Since at least a part of the front face of the ridge 52 is covered by the slot 24, the rotation moment can also be transmitted directly here as in the lug 67. The tubular part 38 is disposed above the rib 36. The difference between the tolerance between the inner diameter of the tubular component 38 and the radial ridges of the ribs 36 can also be limited by deforming the at least one elastic ring 28.

FIG. 7 is a cross-sectional view taken along the line VII-VII of FIG. 5. The rotary slots 34 of the upper part 64 and the lower part 4 surround the ring 42 and the axial bracket 48 of the web 45, respectively. The cylindrical part 12 of the lower part 4 is for example formed of a hollow body having a hole corresponding to the rotor shaft 7 and the transverse web to the outer surface 20. In this figure, the position of the magnet 40 is indicated by a dotted line. It can also be seen in this figure that the ring 42 is for example arranged on the web 45 rather than on the magnet 40.

8 to 15 show a second embodiment.

8 shows a tubular component 38 having at least one hole 72 in the wall. On the tubular part 38, for example, four webs 45 are installed (FIG. 10), which webs 45 have two holding webs 82 guided through the holes 72 (FIG. 10). 10). The holes 72 are evenly distributed on the circumference of the tubular part 38. Viewed in the axial direction, for example, two holes 72 are each arranged for one web 45. The tubular component 38 can also serve here as a magnetic ground component.

In FIG. 9, four magnets are evenly distributed, for example, spaced apart at a distance from the outside of the tubular component 38. This structure is not limited to only four magnets, but may place fewer or more magnets 40. In addition, a support liner 75 is disposed or in close contact with the tubular component 38. The support liner 75 is, for example, in the form of a support liner ring 76 having a smaller diameter than the tubular component 38 and having a plurality of support liner webs 77 facing radially outward. The support liner web abuts the inner surface 79 of the tubular component 38.

In FIG. 10, similar to FIG. 9, four webs 45 are arranged in the magnet 40 and the tubular component 38. The web 45 is similar to the web 45 shown in FIG. 2 but does not have a bracket 48. It is also similar in function and operation. In addition, the web 45 of the second embodiment has at least one holding web 82 extending radially outward, which holding web is guided through a hole 72 of the tubular part 38 and at the free end. Has 86. In this embodiment, the web 45 has two holding webs 82 disposed near the axial end 87 of the web 45. Because of this, the web 45 is axially fixed and both axial ends 87 can be very well adhered to the magnet 40 and the tubular component 38.

In addition, a portion of the holding web 82 is disposed inside the tubular component 38. An axial protrusion 85 is formed at the free end 86 of the holding web 82, which extends along the axial direction toward the hole of the tubular part 38 and with the inner surface 79 of the tubular part 38. Together, grooves 88 are formed. In addition, the free end 86 extends in the radially inwardly facing nose 91.

In FIG. 11, the tubular component 38, like the web 45, is coupled in a forced fit by the ring 42. The ring 42 is disposed inside the tubular component 38. In addition, the ring 42 consists of at least one tension component 95 and at least one engagement web 97 interlocked with each of the tension component 95, thereby causing the ring to stretch or expand. Can be. The tension component 95 is inserted into the groove 88 and rotates about the central axis 9 so that the tension component 95 is between the inner surface 79 and the axial protrusion 85 of the tubular component 38. Is pressed into the bayonet joint with the groove 88. To this end, the tension component 95 or the groove 88 may be circular in shape, and the tension component 95 and the groove 88 may be circular in shape at the same time. At this time, the tolerances of the web 45, the tubular component 38, and the magnet 40 are adjusted.

At present the web 45 is fixed radially. Coupling web 97 is not necessary. In addition, the tension component 95 may be installed alone. The holding web 82 is supported, for example, on the support liner 75, but is not bent in this embodiment because the support liner takes the form of the support liner ring 76. In addition, the length of the support liner 75 is adjusted according to the axial distance of the holding web 82.

In addition, the support liner 75 generates a bending moment, which acts on the magnet 40 by the web 45 and also on the tubular component 38 by the magnet 40.

12a shows an upper part 64 or a lower part 4 having at least one elastic ring 28 extending radially to the rib 36, the tubular part 38 being in contact with the rib ( 12b) the tolerance can thus be compensated for. In addition, the upper part 64 and the lower part 4 have at least one nose hole 92 disposed inside the tubular part 38.

In FIG. 13 the lower part 4 or the upper part 64 is shown assembled in the structure according to FIG. 11. Since the nose 91 is engaged with the nose hole 92 of the lower part 4 or the upper part 64, the nose 91 can form a shape fit with the nose hole 92. Since the lower part 4 or the upper part 64 is in contact with the magnet 40, the magnet 40 is fixed in the axial direction.

14a shows a rotor shaft 7 in which a driver 101 is arranged, which in accordance with the structure according to FIG. 13 has an upper part 64 having a corresponding hole 102 for the rotor shaft 7 and It is assembled with the lower part 4. The driver 101 has at least one driver convex 103 which engages and forms a shape fit here with the upper part 64 or the lower part 4 in the corresponding driver recess 105. . Depending on the number of driver protrusions 103, for example, the number of corresponding driver recesses 105 is determined.

In FIG. 14B, the rotor 1 is assembled like the rotor shaft 7, and the driver 101 is engaged with the lower part 4 or the upper part 64.

FIG. 15 shows another axial end of the rotor 1 according to FIG. 14b. At the other axial end of the rotor shaft 7 is arranged a snap ring 109 which engages the recess of the rotor shaft 7 and fixes the upper part or the lower part to the rotor shaft 7 along the axial direction. The driver convex portion 103 is held in the driver concave portion 105.

When a moment of rotation acts on the magnet 40 of the rotor 1 by the magnetic field of the stator, the tubular part 38 rotates, which causes the web 45 to engage the magnet 40 by the tubular part 38. Because. The holding web 82 rotates by the rotational movement of the tubular component 38. The holding web 82 is coupled to the lower part 4 in the form of a shape fitting, for example, by the nose 91 and the nose hole 92. Since the rotor shaft 7 is engaged with the lower part 4 by the driver 101, the rotor shaft 7 also rotates.

Claims (35)

An upper part 64 and a lower part having at least one web 45, at least one tubular part 38, and at least one magnet 40 disposed between two directly adjacent webs 45 ( 4), the web 45 and the tubular part are disposed between the upper part 64 and the lower part 4, the web 45 radially and axially at least one magnet 40 In the rotor 1 fixed with The web (45) is characterized in that the rotor is fixed by at least one ring (42). 2. The rotor of claim 1, wherein said at least two webs (45) form a shape fit with at least one magnet (40). 3. Rotor according to claim 1 or 2, characterized in that the web (45) has at least one axial bracket (48) that engages the ring (42). 2. Rotor according to claim 1, wherein the upper part (64) is in the form of a disc. 2. Rotor according to claim 1, characterized in that the lower part (4) is a cylindrical part (12) and has a radial bracket (15) at the axial end. 6. Rotor according to claim 1 or 5, characterized in that the lower part (4) is fixed to the rotor shaft (7). The method of claim 1 wherein the at least one magnet 40 abuts at least one tubular component 38, The tubular part (38) is characterized in that it is arranged in the lower part (4). 8. Rotor according to claim 7, characterized in that the lower part (4) has at least one rib (36) in contact with the tubular part (38). 9. The web 45 according to claim 1, 2, 3, 7 or 8, wherein the web 45 is formed on the surface of the tubular component 38 by at least one lug 67. A rotor characterized by engaging with a recess. 10. The rotor (1) according to claim 9, characterized in that the rotor (1) has a central axis (9) and the tubular component (38) has at least one radial ridge (52) facing the central axis (9). Rotor. 11. The cylindrical part (12) of the lower part (4) has at least one slot (24) extending parallel to the central axis (9) on the outer surface (20), the slot having a tubular part (12). Rotor, characterized in that a radial ridge 52 of 38 can be inserted. 12. The at least one elastic ring 28 according to claim 5, 6 or 11, wherein the cylindrical part 12 of the lower part 4 is radially spaced and deformable on the outer surface 20. Rotor, characterized in that the elastic ring serves together with the tubular part (38) to compensate for the tolerance. 13. Rotor according to claim 12, characterized in that the elastic ring (28) is arranged in the rib (36). 14. A method according to any one of claims 1, 4, 5, 6, 11, 12 or 13, wherein the lower part 14 is in engagement with the upper part 64. Rotor characterized in that. 13. The method according to any one of claims 1, 2, 3, 5, 6, 9, 11 or 12, wherein the at least one web 45 is a bottom part ( Rotor, characterized in that integral with 4). 13. Rotor according to any one of the preceding claims, characterized in that the at least one web (45) is integral with the upper part (64). 12. The rotor (1) according to any one of the preceding claims, characterized in that the tubular part (38) is a ground part. 2. The rotor of claim 1 wherein the ground component is a ground ring. 2. Rotor according to claim 1, wherein the ring (42) is an elastic ring. 6. Rotor according to claim 5, characterized in that the radial bracket (15) has a hole (31) into which a counterweight can be inserted. The radial bracket 15 of the lower part 4 has a rotating slot 34 at least partially pivoted, And the rotary slot (34) and the radial bracket (15) cover the area of the ring (42) in the assembled state of the rotor (1) and the axial bracket (48) covers the web (45). 22. The upper part 64 according to any one of the preceding claims, wherein the upper part 64 has a rotating slot 34 at least partially pivoted, And the rotary slot (34) and the upper part (64) cover the area of the ring (42) in the assembled state of the rotor (1) and the axial bracket (48) covers the web (45). 23. The method of any of claims 3, 21 or 22, wherein at least one bracket (48) of the web (45) holds at least one nose (49) for axially securing the magnet (40). Rotor characterized by having. 2. Rotor according to claim 1, characterized in that the lower part (4) is in the form of a disc. 2. The lower part (4) and the upper part (64) according to claim 1, wherein the rotor shaft (7) forms a shape fit with the lower part (4) or the upper part (64) when the rotor shaft (7) rotates. Rotor, characterized in that the driver 101 for rotating the) is fixed. 2. A rotor according to claim 1, wherein the tubular component (38) is arranged with a support liner (75). 25. The rotor according to claim 24, wherein the lower part (4) has at least one elastic ring (28) extending radially and in contact with the tubular part (38). 5. The rotor according to claim 4, wherein the upper part (64) has at least one elastic ring (28) extending radially and in contact with the tubular part (38). 2. The at least one tubular component 38 has at least one aperture 72, according to claim 1, The web (45) is characterized in that it has at least one holding web (82) extending radially inward through the hole (72). 30. The holding web (82) according to claim 29 has an axial protrusion (85) forming a groove (88) with an inner surface (78) of the tubular piece (38) inside the tubular piece (38), The holding web (82) forms a bayonet joint with the tubular component (38) and the tension component (95). 31. The holding web 82 according to claim 29 or 30 has an axial protrusion 85 which forms a groove 88 with the inner surface of the tubular piece 38 inside the tubular piece 38. Rotor, characterized in that the groove is disposed in the groove. 32. The device of claim 31, wherein the ring 42 consists of at least one tension component 95 and at least one engagement web 97, And the tension component (95) forms a bayonet joint with the groove (88). The rotor (1) according to any one of the preceding claims, characterized in that the upper part (64) or the lower part (4) has a hole (31) into which the counterweight can be inserted. 30. The method of claim 29, wherein the holding web 82 has at least one nose 91, The upper part 64 and the lower part 4 have at least one nose hole 92, And the nose (91) and the nose hole (92) form a shape fit. 31. The tubular part 38 according to claim 29 or 30 has a support liner 75, The holding web (82) is supported by a support liner (75).