Magnetic steel cover mounting structure

Abstract

The utility model relates to the field of motors. A magnetic steel cover installation structure comprises a rotating shaft, the rotating shaft is sleeved with a rotor module, and the rotor module is composed of a rotor iron core and magnetic steel bonded to the rotor iron core. The rotor module is sleeved with a magnetic steel cover, the two ends of the magnetic steel cover are provided with turned edges rolled out through a rolling head, and the two turned edges abut against the two end faces of the rotor module respectively. According to the utility model, the problem that the stator iron core attracts the magnetic steel cover when the motor is disassembled and assembled can be solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor technical field especially relates to magnetic steel cover mounting structure. BACKGROUND

[0002] In the process of motor modular production, as shown in the figure, prior art mostly assembles magnetic steel cover 3, rotor iron core 2 and magnetic steel in advance, then sets up to rotating shaft 1 as a whole module, and then together into the motor. Figure 1 This structure has several groups of magnetic steel, which will be equipped with several groups of magnetic steel cover. When the motor is disassembled, the magnetic steel cover will be attracted by the stator core, causing the magnetic steel cover to fall off, and the whole module cannot be reused. UTILITY MODEL CONTENTS

[0003] The utility model discloses a magnetic steel cover mounting structure, which solves the technical problems in the background art.

[0004] The utility model discloses a magnetic steel cover mounting structure, which solves the technical problems in the background art.

[0005] A magnetic steel cover mounting structure, comprising a rotating shaft, characterized in that a rotor module is sleeved on the rotating shaft, and the rotor module is composed of a rotor iron core and magnetic steel bonded on the rotor iron core.

[0006] The rotor module is sleeved with a magnetic steel cover, both ends of the magnetic steel cover are provided with flanges rolled out by a rolling head, and the two flanges are respectively arranged on two end faces of the rotor module.

[0007] The utility model removes the magnetic steel cover from the whole module, and only the rotor iron core and the magnetic steel are taken as a whole. When installing, the rotor module can be first installed into the motor, then the magnetic steel cover is inserted, and then the flanges are rolled out at both ends of the magnetic steel cover. When disassembling, the magnetic steel cover can be removed together from the motor. Since the magnetic steel cover of the utility model directly covers the whole rotor module, the magnetic steel cover is more integral and larger in area compared with the prior art. Therefore, when the motor is disassembled, the magnetic steel cover is not easily attracted by the stator core. The magnetic steel cover can be opened first, then the rotor module is removed, and then the magnetic steel cover is deformed and removed. The problem of the stator core attracting the magnetic steel cover can be solved.

[0008] The intersection between the flange and the magnetic steel cover is provided with a first annular groove, the opening of the first groove is towards the rotor module, and the groove wall spacing of the first groove gradually increases from the groove bottom to the groove opening. Thus, the magnetic steel cover is deformed at the position, and the rolled flange is easier and more consistent after rolling.

[0009] The edge of the turn-up is beveled, and the thickness thereof is smaller closer to the rotating shaft; two end covers are further sleeved on the rotating shaft, and the two end covers are respectively located at two ends of the rotor module, the outer edge of the end cover is beveled, and the thickness thereof is larger closer to the rotating shaft, the edge of the turn-up is inserted between the end cover and the rotor module, and the bevels of the turn-up and the end cover abut together, so that the position of the magnetic steel cover is limited by the end cover, and the magnetic steel cover is further prevented from being attracted by the stator core.

[0010] A strip-shaped notch is further arranged on the turn-up, the notch is perpendicular to the first groove, and the maximum distance of the notch to the central axis of the rotating shaft is greater than the maximum distance of the end cover to the central axis of the rotating shaft, in the process of disassembling the motor, the turn-up can be easily pried up by inserting a crowbar into the notch, so that the magnetic steel cover and the rotor module are more easily separated.

[0011] A ring-shaped second groove is arranged on the turn-up, the opening of the second groove faces away from the rotor module, the distance between the groove walls of the groove mouth of the second groove gradually increases from the groove bottom to the groove mouth, and the second groove is located on the side of the first groove close to the edge of the turn-up, so that the magnetic steel cover is deformed at the position, the rolling turn-up is easier and the consistency after rolling is good, and more importantly, the second groove can cooperate with the first groove to form an arc structure between the first groove and the second groove, and the distance between the magnetic steel cover and the rotor module is limited by the arc structure. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a structural schematic view of a magnetic steel cover mounting structure in the prior art;

[0013] Figure 2 It is a structural schematic view of a magnetic steel cover mounting structure of the utility model;

[0014] Figure 3 It is a structural schematic view of the magnetic steel cover before rolling.

[0015] Figure 4 It is a sectional view of the structure of the magnetic steel cover after rolling. DETAILED DESCRIPTION

[0016] In order to more clearly understand the above purpose, features and advantages of the utility model, the utility model will be further described below in combination with drawings and embodiments. It should be explained that the embodiments and features in the embodiments of the present application can be combined with each other without conflict.

[0017] In the following description, many specific details are set forth in order to provide a thorough understanding of the utility model, but the utility model can also be implemented in other ways different from the description, therefore, the utility model is not limited to the specific embodiments disclosed in the following description. Specific embodiment 1

[0019] With reference to Figure 1 , 2 , 3 or 4, a magnetic steel cover mounting structure, comprising a rotating shaft 1, a rotor module is sleeved on the rotating shaft 1, the rotor module is composed of a rotor core 2 and magnetic steels bonded on the rotor core 2. A magnetic steel cover 3 is sleeved outside the rotor module, both ends of the magnetic steel cover 3 are provided with turnups rolled out by a rolling head, and the two turnups are respectively abutted on two end faces of the rotor module. The magnetic steel cover 3 is removed from the whole module, only the rotor core 2 and the magnetic steels are taken as a whole, when being mounted, the rotor module can be first mounted into the motor, then the magnetic steel cover 3 is inserted, and then the turnups 5 at both ends of the magnetic steel cover 3 are rolled out, when being dismounted, the magnetic steel cover 3 and the rotor module can be removed together from the motor. Since the magnetic steel cover 3 of the utility model directly covers the whole rotor module, compared with the magnetic steel cover 3 of the prior art, the magnetic steel cover 3 is better in integrity and larger in area, so when the motor is disassembled, the magnetic steel cover 3 is not easily sucked by the stator core, the turnups 5 of the magnetic steel cover 3 can be first opened, then the rotor module is removed, and then the magnetic steel cover 3 is removed after being deformed, so the problem that the stator core sucks the magnetic steel cover 3 can be solved. Specific embodiment 2

[0021] On the basis of the specific embodiment 1, a first groove 8 in a ring shape is arranged at the junction of the turnup 5 and the magnetic steel cover 3, the opening of the first groove 8 faces the rotor module, and the distance between the groove walls of the first groove 8 gradually increases from the groove bottom to the groove opening. Thus the magnetic steel cover 3 is guided to deform at the position, and the turnup 5 is more easily rolled and has good consistency after being rolled. Specific embodiment 3

[0023] On the basis of the specific embodiment 1 or 2, the edge of the turnup 5 is in a bevel shape, and the thickness thereof is smaller closer to the rotating shaft 1; two end covers are further sleeved on the rotating shaft 1, the two end covers are respectively located at two ends of the rotor module, the outer edge of the end cover is in a bevel shape, and the thickness thereof is larger closer to the rotating shaft 1, the edge of the turnup 5 is inserted between the end cover and the rotor module, and the bevel of the turnup 5 is abutted with the bevel of the end cover. Thus the position of the magnetic steel cover 3 is limited by the end cover, and the magnetic steel cover 3 is further prevented from being sucked by the stator core.

[0024] A notch 7 in a strip shape is further arranged on the turnup 5, the notch 7 is perpendicular to the groove, and the maximum distance from the notch to the central axis of the rotating shaft 1 is greater than the maximum distance from the end cover to the central axis of the rotating shaft 1. In the process of dismounting the motor, a lever can be inserted into the notch to easily pry up the turnup 5, so that the magnetic steel cover 3 and the rotor module are more easily separated.

[0025] The second groove 6 is annularly arranged on the flange 5, the opening of the second groove 6 faces away from the rotor module, the distance between the groove walls of the slot of the second groove 6 gradually increases from the groove bottom to the slot opening, and the second groove 6 is located on the side of the first groove 8 close to the edge of the flange 5. Thus, the magnetic steel cover 3 is deformed at this position, the rolling flange 5 is easier to roll and has good consistency after rolling, and more importantly, the second groove 6 can cooperate with the first groove 8 to form an arc structure 9 between the first groove and the second groove, and the distance between the magnetic steel cover 3 and the rotor module is limited by the arc structure.

[0026] The utility model discloses not insert the magnetic steel cover 3 between the magnetic steel group, so the distance between the magnetic steel group can be smaller compared with prior art, preferably, the magnetic steel group is equipped with the spacer 4.

[0027] The above is only the preferred embodiment of the utility model, and is not other forms of the restriction to the utility model, any skilled person in the art can change or modify the equivalent embodiment of equivalent change by the disclosed technical content to be applied to other fields, but any simple modification, equivalent change and modification of the above embodiment according to the technical essence of the utility model still belongs to the protection scope of the utility model technical scheme without departing from the utility model technical scheme content.

Claims

1. A magnetic steel cover mounting structure comprising a rotating shaft, characterized by, The rotor module is sleeved on the rotating shaft and is composed of a rotor core and magnetic steel bonded on the rotor core; The rotor module is sleeved with a magnetic steel cover, both ends of the magnetic steel cover are provided with flanges rolled by a rolling head, and the two flanges are respectively arranged on two end faces of the rotor module.

2. The magnetic steel cup mounting structure according to claim 1, characterized by: The junction of the flange and the magnetic steel cover is provided with a first annular groove, the opening of the first groove is towards the rotor module, and the groove wall spacing gradually increases from the groove bottom to the groove opening.

3. The magnetic steel cup mounting structure according to claim 2, characterized by: The edge of the flange is in a bevel shape, and the thickness gradually decreases towards the rotating shaft; two end covers are further sleeved on the rotating shaft, the two end covers are respectively arranged at two ends of the rotor module, the outer edge of the end cover is in a bevel shape, and the thickness gradually increases towards the rotating shaft, the edge of the flange is inserted between the end cover and the rotor module, and the bevel of the flange is arranged together with the bevel of the end cover.

4. The magnetic steel cup mounting structure according to claim 3, characterized by: The flange is further provided with a strip-shaped notch, the notch is perpendicular to the first groove, and the maximum distance of the notch to the central axis of the rotating shaft is greater than the maximum distance of the end cover to the central axis of the rotating shaft.

5. The magnetic steel cup mounting structure according to claim 2, characterized by: The flange is provided with a second annular groove, the opening of the second groove is away from the rotor module, the groove wall spacing of the groove opening gradually increases from the groove bottom to the groove opening, and the second groove is located on one side of the first groove close to the edge of the flange.

6. The magnetic steel cup mounting structure according to claim 5, characterized by: An arc-shaped structure is formed between the first groove and the second groove.

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