CN203607949U

CN203607949U - Permanent magnetic motor rotor structure

Info

Publication number: CN203607949U
Application number: CN201320771134.4U
Authority: CN
Inventors: 王必生
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-12-01
Filing date: 2013-12-01
Publication date: 2014-05-21
Anticipated expiration: 2023-12-01

Abstract

The utility model discloses a permanent magnetic motor rotor structure. The rotor structure comprises a shaft, an iron core, press blocks and a magnetic steel. A shaft core of the shaft is pressed into an iron core hole. The press blocks are fixed on press plates to stop axial movement of the magnetic steel. The iron core includes punching sheets, the press plates and rivets. The press plates are on two end surfaces of the iron core and are closely attached to the punching sheets, so that an integral body is formed through riveted joint by the plurality of rivets. Each press plate is provided with a balancing groove, press plate rivet holes, a press plate hole, and a press plate hole plane. The shaft core is in interference fit with the iron core hole. The rotor structure has the following advantages: while axial loosening is prevented, combination of the plane of the iron core hole and the plane of the shaft effectively prevents loose turning of the iron core which may be induced by a large moment; the press plates on the two ends of the iron core effectively prevent basin-shape phenomena of the punching sheets during shaft pressing, so that the structural quality of a motor rotor is ensured; meanwhile the press plate grooves facilitate adding weight for dynamic balancing of the rotor; the rotor structure is simple; and the machining and manufacturing techniques are easy.

Description

A kind of rotor structure for permanent magnet motor

Technical field

The utility model relates to a kind of rotor of magneto, relates in particular to a kind of rotor structure of magneto.

Background technology

As everyone knows, rotor needs rotor core and axle bar none, and the rotor of magneto also contains magnet steel, different motors can be because its magnetic circuit requires different, the structure of rotor also can be different, carry out embedded permanent magnetic electric machine rotor iron core in the structure that uses punching to laminate for magnet steel, axle and rotor core are to adopt structure that optical axis and the interference of iron core endoporus press-fit or straight burr axial compression to enter the structure of iron core endoporus substantially, these all have some limitations, the structure that adopts optical axis and the interference of iron core endoporus to press-fit requires large motor for moment, must increase the magnitude of interference of optical axis and iron core endoporus, but the magnitude of interference is too large, in the time of last item, the punching of rotor core can be pressed into basin shape, make iron core face deformation, if adopt straight burr axial compression to enter the structure of iron core endoporus, can cause greatly bending shaft form and position tolerance not reach the drawback of requirement because of the thin inadequate or thick straight burr axial pressure of straight burr axle carry-over moment.

Summary of the invention

The utility model solves the problems of the technologies described above adopted technical scheme: a kind of rotor structure for permanent magnet motor, comprise axle, iron core, briquetting, magnet steel, the described diameter of axle is loaded in iron core hole, described axial plane is corresponding with iron core hole plane, described magnet steel is embedded in the magnet steel groove of iron core, and described briquetting is fixed on the axial displacement that stops magnet steel on the pressing plate of iron core; Described iron core comprises punching, pressing plate, rivet, and described pressing plate is the both ends of the surface in iron core respectively, is close together with punching, becomes entirety by several rivets; Described pressing plate is provided with balance groove, pressing plate rivet hole, plate hole, plate hole plane; The described diameter of axle and iron core hole adopt interference fit, and axial plane and iron core hole plane adopt interference fits; The outside of described pressing plate balance groove in iron core both ends of the surface.

Described axle is provided with the diameter of axle, axial plane, guide end.

Described punching is provided with punching groove, rivet hole, punching hole, punching hole plane.

The guide end of described axle and iron core hole adopt matched in clearance.

Described briquetting is made up of non-magnet material.

The pressing plate rivet hole of described pressing plate, plate hole, plate hole plane are corresponding with rivet hole, punching hole, punching hole planar dimension, the shape location of equal of punching.

Compared with prior art, the utility model has the advantages that owing to adopting interference fit between iron core hole and the diameter of axle, eliminate the phenomenon of axial play, iron core hole plane and axial plane can effectively prevent that the issuable iron core pine of high-torque from turning phenomenon, the basin shape phenomenon that the pressing plate at iron core two ends can stop punching to produce in the time of last item effectively, the rotor of motor is structurally guaranteed reliably, there is the existence of pressing plate groove simultaneously, rotor dynamic balancing increased the weight of to provide convenience, this motor rotor construction is simple, and process for machining and manufacturing is convenient.

accompanying drawing explanation

Fig. 1 is schematic perspective view of the present utility model.

Fig. 2 is front view of the present utility model.

Fig. 3 is iron core schematic perspective view of the present utility model.

Fig. 4 is iron core front view of the present utility model.

Fig. 5 is the B place profile of the utility model iron core front view.

Fig. 6 is pressing plate schematic perspective view of the present utility model.

Fig. 7 is pressing plate cutaway view of the present utility model.

Fig. 8 is briquetting schematic perspective view of the present utility model.

Fig. 9 is axle schematic perspective view of the present utility model.

Figure 10 is punching schematic diagram of the present invention.

embodiment

Below in conjunction with accompanying drawing, embodiment is described in further detail the utility model.

As Fig. 1, shown in Fig. 2, a kind of rotor structure for permanent magnet motor, comprise axle 1, iron core 2, briquetting 3, magnet steel 4, as Fig. 3, shown in Fig. 4 and Fig. 9, axle 1 is pressed into the diameter of axle 11 in the iron core hole 24 of iron core 2 take leading end 13 as guiding, now the diameter of axle 11 is loaded on the interior interference close-fitting in iron core hole 24, axial plane 12 is close together with iron core hole plane 25, stop the issuable iron core pine of high-torque to turn situation, by Fig. 1, Fig. 4, shown in Fig. 6, magnet steel 4 packs that the magnet steel groove 21 of iron core 2 is interior to be pushed down with briquetting 3 into, briquetting 3 is fixed on the fixing hole 231 of pressing plate 23 of iron core 2 through screw hole 31 by screw, the first plane 32 that is briquetting 3 is pressed on pressing plate 23, the second plane 33 is withstood the axial displacement that magnet steel 4 stops magnet steel 4.

In above-described embodiment, by Fig. 3, Fig. 5, Fig. 6, Fig. 7, Fig. 8, shown in Figure 10, iron core 2 comprises punching 26, pressing plate 23, rivet 22, pressing plate 23 is the both ends of the surface in iron core 2 respectively, be close together with punching 26, the pressing plate rivet hole 233 of pressing plate 23, plate hole 232, the rivet hole 263 of plate hole plane 235 and punching 26, punching hole 262, the position of punching hole plane 261 is corresponding one by one, rivet into entirety by several rivets 22, by the punching groove 264 of some punchings 26, punching hole plane 261, punching hole 262 laminates the magnet steel groove 21 that forms respectively iron core 2, iron core hole plane 25, iron core hole 24, rivet into balance groove 234 outside in iron core 2 both ends of the surface respectively of the pressing plate 23 of integrated iron core 2.

In above-described embodiment, shown in Fig. 1, Fig. 3, the basin shape phenomenon that the pressing plate 23 at iron core 2 two ends effectively stops punching to produce in the time of last item 1, has also increased the combination tautness after iron core 2 press-fits with axle 1 simultaneously, and the balance groove 234 of pressing plate 23 is convenient to increase the weight of when rotor does dynamic balancing used.

Claims

1. a rotor structure for permanent magnet motor, comprise axle, iron core, briquetting, magnet steel, the described diameter of axle is loaded in iron core hole, and described axial plane is corresponding with iron core hole plane, described magnet steel is embedded in the magnet steel groove of iron core, and described briquetting is fixed on the axial displacement that stops magnet steel on the pressing plate of iron core; Described iron core comprises punching, pressing plate, rivet, and described pressing plate is the both ends of the surface in iron core respectively, is close together with punching, becomes entirety by several rivets; Described pressing plate is provided with balance groove, pressing plate rivet hole, plate hole, plate hole plane; The described diameter of axle and iron core hole adopt interference fit, and axial plane and iron core hole plane adopt interference fits; The outside of described pressing plate balance groove in iron core both ends of the surface.

2. a kind of rotor structure for permanent magnet motor as claimed in claim 1, is characterized in that described axle is provided with the diameter of axle, axial plane, guide end.

3. a kind of rotor structure for permanent magnet motor as claimed in claim 1, is characterized in that described punching is provided with punching groove, rivet hole, punching hole, punching hole plane.

4. a kind of rotor structure for permanent magnet motor as claimed in claim 1, is characterized in that the guide end of described axle and iron core hole adopt matched in clearance.

5. a kind of rotor structure for permanent magnet motor as claimed in claim 1, the briquetting described in it is characterized in that is made up of non-magnet material.

6. a kind of rotor structure for permanent magnet motor as claimed in claim 1, is characterized in that pressing plate rivet hole, plate hole, the plate hole plane of described pressing plate is corresponding with rivet hole, punching hole, punching hole planar dimension, the shape location of equal of punching.