Magnetic steel mounting structure

Abstract

The invention provides a magnetic steel installation structure, and relates to the technical field of surface-mounted permanent magnet installation, the magnetic steel installation structure comprises a motor shell, a magnetic steel positioning cage, stator magnetic steel, a rotor and an output shaft, the motor shell comprises a front shell, a rear shell and a shell, the surface of the magnetic steel positioning cage is provided with a magnetic steel preformed groove, the inner wall of the magnetic steel positioning cage is provided with a positioning block, and the magnetic steel positioning cage is provided with a positioning groove. A positioning mechanism is arranged on the surface of the rotor, a magnetic steel positioning cage is arranged, and a magnetic steel reserved groove is formed in the surface of the magnetic steel positioning cage, so that stator magnetic steel can be conveniently bonded in the magnetic steel reserved groove in advance through glue, then the rotor is fixed in the magnetic steel positioning cage, and damage to the stator magnetic steel and the rotor when the stator magnetic steel and the rotor are directly installed is avoided. The installation error risk is reduced, meanwhile, the working efficiency is improved to a certain extent, and the positioning mechanism is arranged, so that the rotor and the magnetic steel positioning cage are conveniently fixed, and the rotor, the stator magnetic steel and the magnetic steel positioning cage are integrally installed in the motor shell.

Description

Technical Field

[0001] The invention relates to the technical field of surface-mounted permanent magnet installation, and in particular to a magnetic steel installation structure. Background Art

[0002] In the prior art, modularization is mostly used, that is, the magnetic steel cover, iron core, and permanent magnet are assembled in advance. However, during the installation process, due to the force between the soft magnetic surface of the rotor and the stator magnetic steel, if the installation is offset, it is easy to cause damage to the rotor and stator magnetic steel, which affects the installation efficiency on the one hand, and easily causes damage to the rotor or stator magnetic steel on the other hand, affecting normal use;

[0003] Therefore, a magnetic steel installation structure is designed to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to solve the technical problems raised in the above background technology.

[0005] The present invention adopts the following technical solution: a magnetic steel installation structure, including a motor housing, a magnetic steel positioning cage, a stator magnetic steel, a rotor and an output shaft, the motor housing includes a front shell, a rear shell and a shell body, the surface of the magnetic steel positioning cage is provided with a magnetic steel reserved groove, the inner wall of the magnetic steel positioning cage is provided with a positioning block, and the surface of the rotor is provided with a positioning mechanism.

[0006] As a preferred magnetic steel installation structure of the present invention, the positioning mechanism includes a slide groove opened on the surface of the rotor and a fixed block fixed on the surface of the rotor, a spring pin is inserted into the surface of the fixed block, a slider is slidably connected to the inside of the slide groove, an insert block is rotatably connected to the surface of the slider, and a fixing hole is opened on the surface of the insert block.

[0007] As a preferred magnetic steel installation structure of the present invention, the stator magnetic steel is bonded to the inside of the magnetic steel reserved groove by glue, and the rotor and the magnetic steel positioning cage are fixed by a positioning mechanism.

[0008] As a preferred magnetic steel installation structure of the present invention, the magnetic steel reserved grooves are distributed in a circular array on the surface of the magnetic steel positioning cage.

[0009] As a preferred magnetic steel installation structure of the present invention, a slot is provided on the surface of the positioning block, and the slot matches the shape and size of the inserting block.

[0010] As a preferred magnetic steel installation structure of the present invention, the magnetic steel positioning cage and the rotor are fixed by means of slots and inserts.

[0011] As a preferred magnetic steel installation structure of the present invention, the size of the elastic pin is matched with the fixing hole, and the insert block and the rotor are fixed through the fixing hole and the elastic pin.

[0012] Compared with the prior art, the advantages and positive effects of the present invention are:

[0013] 1. In the present invention, a magnetic steel positioning cage is provided, and a magnetic steel reserved groove is opened on the surface of the magnetic steel positioning cage, so that the stator magnetic steel is conveniently glued in the magnetic steel reserved groove by glue in advance, and then the rotor is fixed in the magnetic steel positioning cage, so as to avoid damage to the stator magnetic steel and the rotor when they are directly installed, reduce the risk of installation errors, and improve work efficiency to a certain extent.

[0014] 2. In the present invention, a positioning mechanism is provided to facilitate fixing the rotor and the magnetic steel positioning cage, so that the rotor, the stator magnetic steel and the magnetic steel positioning cage can be installed as a whole inside the motor housing. At the same time, only the limit between the plug block and the slot needs to be released to separate the rotor and the magnetic steel positioning cage inside the motor housing to avoid affecting the normal rotation of the rotor. At the same time, the magnetic steel positioning cage is still placed inside the motor housing, that is, the rotor and the stator magnetic steel are separated, and the stator magnetic steel can be prevented from being damaged again during the rotation of the rotor. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of a magnetic steel installation structure proposed by the present invention;

[0016] Figure 2 A partial exploded diagram of a magnetic steel installation structure is proposed for the present invention;

[0017] Figure 3 for Figure 2 A partial schematic diagram of the structure in the middle;

[0018] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0019] Figure 5 It is a partial structural schematic diagram of the prior art;

[0020] Figure 6 It is a partial structural schematic diagram of the present invention;

[0021] Legend:

[0022] 1. Motor housing; 101. Front housing; 102. Rear housing; 103. Housing;

[0023] 2. Magnetic steel positioning cage; 201. Magnetic steel reserved slot; 202. Positioning block; 203. Slot;

[0024] 3. Stator magnet; 4. Rotor; 5. Output shaft;

[0025] 6. Positioning mechanism; 601. Slide; 602. Fixing block; 603. Spring pin; 604. Sliding block; 605. Insert block; 606. Fixing hole;

[0026] 7. Magnetic steel protective cover. DETAILED DESCRIPTION

[0027] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0028] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0029] Example

[0030] See also Figure 1-6 The present invention provides a technical solution: a magnetic steel installation structure, including a motor housing 1, a magnetic steel positioning cage 2, a stator magnetic steel 3, a rotor 4 and an output shaft 5, the stator magnetic steel 3 is glued to the inside of the magnetic steel reserved groove 201, and the rotor 4 is fixed to the magnetic steel positioning cage 2 by a positioning mechanism 6, which is convenient for first fixing the rotor 4 to the magnetic steel positioning cage 2, and then fixing the stator magnetic steel 3 to the surface of the magnetic steel positioning cage 2, and then the rotor 4, the magnetic steel positioning cage 2, and the stator magnetic steel 3 can be directly placed in the motor housing 1 as a whole, avoiding direct installation and causing damage to the stator magnetic steel 3 and the rotor 4, the motor housing 1 includes a front shell 10 1. The rear shell 102 and the shell 103, a magnetic steel reserved groove 201 is provided on the surface of the magnetic steel positioning cage 2, and the magnetic steel positioning cage 2 and the rotor 4 are fixed by a slot 203 and an insert block 605. The magnetic steel reserved groove 201 is distributed in a circular array on the surface of the magnetic steel positioning cage 2, which is convenient for installing the stator magnetic steel 3. A positioning block 202 is provided on the inner wall of the magnetic steel positioning cage 2, and a slot 203 is provided on the surface of the positioning block 202. The shape and size of the slot 203 and the insert block 605 are matched, which facilitates the insertion of the insert block 605 into the inside of the slot 203, so as to fix the magnetic steel positioning cage 2 and the rotor 4, and a positioning mechanism 6 is provided on the surface of the rotor 4.

[0031] The positioning mechanism 6 includes a slide groove 601 opened on the surface of the rotor 4 and a fixed block 602 fixed on the surface of the rotor 4. A spring pin 603 is inserted on the surface of the fixed block 602. The size of the spring pin 603 is matched with the fixing hole 606. The plug block 605 is fixed to the rotor 4 through the fixing hole 606 and the spring pin 603. The inside of the slide groove 601 is slidably connected to the slider 604. The surface of the slider 604 is rotatably connected to the plug block 605. The surface of the plug block 605 is opened with a fixing hole 606.

[0032] Working principle: When in use, first sleeve the magnetic steel positioning cage 2 on the surface of the rotor 4, and pull the elastic pin 603 to disengage the elastic pin 603 from the fixing hole 606. At this time, the plug block 605 can release the limit, rotate the plug block 605 to make its opening downward, and slide the plug block 605 downward. The plug block 605 drives the slider 604 to slide inside the slide groove 601 until the plug block 605 is inserted into the slot 203. At this time, the rotor 4 and the magnetic steel positioning cage 2 can be fixed, and then the stator magnetic steel 3 is glued to the magnetic steel reserved groove 201. When the stator magnetic steel 3 is fixed, the rotor 4, the magnetic steel positioning cage 2 and the stator magnetic steel 3 become a whole, and then put the whole into the shell 103, and glue the stator magnetic steel 3 and the shell 103 again. At this time, the stator The magnet 3 can be fixed between the shell 103 and the magnet positioning cage 2, and then the output shaft 5 is fixed inside the rotor 4. When the fixation is completed, the plug block 605 is manually slid upward, and the plug block 605 drives the slider 604 to slide upward inside the slide groove 601 until the plug block 605 is completely disengaged from the slot 203. At this time, the plug block 605 is rotated again, and the plug block 605 rotates on the surface of the slider 604 and pulls the elastic pin 603 until the fixing hole 606 and the elastic pin 603 are opposite to each other. At this time, the elastic pin 603 is released again, and the elastic pin 603 can be inserted into the fixing hole 606. Then the plug block 605 can be fixed on the surface of the rotor 4, and then the front shell 101 and the rear shell 102 are respectively fixed to the front and rear sides of the shell 103. At this time, the motor housing 1 can be installed.

[0033] The present invention may also include a magnetic steel protective sleeve 7, the rotor module outer shell is provided with a magnetic steel protective sleeve 7, both ends of the magnetic steel protective sleeve 7 are provided with flanges rolled out by a rolling head, the two flanges are respectively against the two end faces of the rotor module, and the positioning mechanism 6 is arranged on the magnetic steel protective sleeve 7. Compared with the design of fixing the positioning mechanism on the rotor, it has the beneficial effect of facilitating production and processing. More importantly, the positioning mechanism adapted to the slot 203 on the magnetic steel positioning sleeve can be selected by replacing different magnetic steel protective sleeves.

[0034] When installing the present invention, the rotor module can be first installed into the magnetic steel positioning sleeve 7 or the motor housing, and then the magnetic steel protective sleeve is inserted, and then the flanges are rolled at both ends of the magnetic steel protective sleeve. When disassembling, the motor can be moved out together. Since the magnetic steel protective sleeve of the invention directly covers the entire rotor module, compared with the magnetic steel protective sleeve of the prior art, it has better integrity and larger area, so it is not easy to be sucked by the stator core when the motor is disassembled.

[0035] A first annular groove is provided at the junction of the flange and the magnetic steel protective cover, the opening of the first groove faces the rotor module, and the spacing between the groove walls of the first groove gradually increases from the groove bottom to the groove opening, thereby guiding the magnetic steel protective cover to deform at this location, making it easier to roll the flange and achieving good consistency after rolling.

[0036] The edge of the flange is in the shape of a bevel, and the thickness decreases as it gets closer to the output shaft; two end covers are also sleeved on the output shaft, and the two end covers are located at both ends of the rotor module. The outer edge of the end cover is in the shape of a bevel, and the thickness increases as it gets closer to the output shaft. The edge of the flange is inserted between the end cover and the rotor module, and the bevel of the flange abuts against the bevel of the end cover. Thus, the end cover is used to limit the position of the magnetic steel protective cover, further preventing the magnetic steel protective cover from being attracted by the stator core.

[0037] The flange is also provided with a strip-shaped notch, which is perpendicular to the first groove, and the maximum distance from the notch to the central axis of the output shaft is greater than the maximum distance from the end cover to the central axis of the output shaft. During the motor removal process, the flange can be easily pried up by inserting a prying tool into the notch, thereby making it easier to separate the magnetic steel protective cover and the rotor module.

[0038] The flange is provided with a second annular groove, the opening of the second groove faces away from the rotor module, the groove wall spacing of the notch of the second groove gradually increases from the groove bottom to the notch, and the second groove is located on the side of the first groove close to the edge of the flange. This guides the magnetic steel protective cover to deform at this location, making it easier to roll the flange and the consistency after rolling is good. 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 arc structure is used to limit the distance between the magnetic steel protective cover and the rotor module.

[0039] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A magnetic steel installation structure, comprising a motor housing (1), a magnetic steel positioning cage (2), a stator magnetic steel (3), a rotor (4) and an output shaft (5), characterized in that: The motor housing (1) comprises a front housing (101), a rear housing (102) and a shell (103); a magnetic steel reserved groove (201) is provided on the surface of the magnetic steel positioning cage (2); a positioning block (202) is provided on the inner wall of the magnetic steel positioning cage (2); and a positioning mechanism (6) is provided on the surface of the rotor (4).

2. The magnetic steel cover installation structure according to claim 1, characterized in that: The positioning mechanism (6) comprises a slide groove (601) provided on the surface of the rotor (4) and a fixed block (602) fixed on the surface of the rotor (4); a spring pin (603) is inserted into the surface of the fixed block (602); a slider (604) is slidably connected to the interior of the slide groove (601); an insert block (605) is rotatably connected to the surface of the slider (604); and a fixing hole (606) is provided on the surface of the insert block (605).

3. The magnetic steel cover installation structure according to claim 2, characterized in that: The stator magnetic steel (3) is bonded to the inside of the magnetic steel reserved groove (201) by glue, and the rotor (4) and the magnetic steel positioning cage (2) are fixed by a positioning mechanism (6).

4. The magnetic steel cover installation structure according to claim 3, characterized in that: The magnetic steel reserved grooves (201) are distributed in a circular array on the surface of the magnetic steel positioning cage (2).

5. The magnetic steel cover installation structure according to claim 4, characterized in that: A slot (203) is provided on the surface of the positioning block (202), and the slot (203) matches the shape and size of the inserting block (605).

6. The magnetic steel cover installation structure according to claim 5, characterized in that: The magnetic steel positioning cage (2) and the rotor (4) are fixed via a slot (203) and an insert block (605).

7. The magnetic steel cover installation structure according to claim 6, characterized in that: The size of the elastic pin (603) is matched with the fixing hole (606), and the insert block (605) and the rotor (4) are fixed via the fixing hole (606) and the elastic pin (603).

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