Fixing and positioning device for magnetic steel

Abstract

The utility model discloses a magnetic steel fixing and positioning device, which comprises a rotor disc and a plurality of magnetic steels, the rotor disc is of a split type structure and comprises a main disc body and an auxiliary disc body, the main disc body is provided with a plurality of main mounting grooves in an annular array, each main mounting groove is of a step structure, and the magnetic steels are placed in the main mounting grooves; a plurality of auxiliary mounting grooves are formed in the auxiliary disc body in an annular array mode, the auxiliary mounting grooves correspond to the main mounting grooves in a one-to-one mode, pressing rings are arranged on the lower portions of the auxiliary mounting grooves along the auxiliary mounting grooves by a circle, and the pressing rings press the surface of the magnetic steel when the main disc body and the auxiliary disc body are combined. According to the utility model, the rotor disc with a split structure is arranged, so that the magnetic steel can be fixed, the magnetic steel can be prevented from falling off even if the bonding strength is reduced, and meanwhile, a small number of bolts are adopted for fixation, so that the working efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to disc type motor technical field, concretely relates to a fixed positioning device of magnetic steel. BACKGROUND

[0002] Disc type motor is particularly suitable for thin installation scene of space limited with its compact structure, high power density, short axial size and other obvious advantages. The rotor structure of the motor is mainly composed of magnetic steel and rotor disc. At present, the fixing of magnetic steel mainly adopts two ways of bonding or screw fastening:

[0003] In the bonding process, the magnetic steel is attached to the surface of the rotor disc through the adhesive, but the magnetic loss in the running process of the rotor will cause the adhesive to heat, thereby significantly reducing the bonding strength, and finally possibly causing the magnetic steel to fall off;

[0004] In the screw fastening scheme, although the structure is relatively reliable, a large number of screws need to be fastened one by one to realize the fixing of multiple magnetic steels, which not only has low assembly efficiency, but also may cause mechanical damage to the magnetic steel during screw installation, thereby affecting the magnetic circuit performance. SUMMARY

[0005] To solve the technical problem of poor cooling effect in the prior art, a fixed positioning device of magnetic steel is provided.

[0006] To achieve the above purpose, the technical scheme adopted by the utility model is: a fixed positioning device of magnetic steel, comprising a rotor disc and multiple magnetic steels, the innovation point of which is that: the rotor disc is of split structure, comprising a main disc body and a vice disc body, the main disc body is annular array and is provided with multiple main installation grooves, the main installation groove is of stepped structure, and the magnetic steel is placed in the main installation groove; the vice disc body is annular array and is provided with multiple vice installation grooves, the vice installation groove corresponds to the main installation groove one by one, and a compression ring is arranged on the lower part of the vice installation groove along the vice installation groove; the compression ring is pressed on the surface of the magnetic steel when the main disc body and the vice disc body are combined.

[0007] Further, multiple guide holes are annularly arrayed on the periphery of the main disc body, multiple guide columns are annularly arranged on the periphery of the vice disc body, and the guide column corresponds to the guide hole one by one.

[0008] Further, a threaded hole is arranged at the bottom of the guide hole, a counterbore is formed in the inside of the guide column, and a bolt is used for fixed connection.

[0009] Further, an annular groove is formed on the main disc body, and an annular strip is formed on the vice disc body, which are matched and clamped with each other.

[0010] Further, the shape of the main installation groove, the vice installation groove and the compression ring is consistent with the shape of the magnetic steel.

[0011] After the above structure, the utility model has the beneficial effects that:

[0012] The utility model discloses a rotor disc of split type structure can be fixed to the magnetic steel, even in the case where the adhesive strength reduces, can also avoid the magnetic steel to fall off, adopts a small amount of bolt to be fixed simultaneously, improves work efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the structural schematic diagram of the utility model.

[0014] BRIEF DESCRIPTION OF DRAWINGS

[0015] 1 magnetic steel, 2 main disc body, 21 main installation slot, 22 guide hole, 23 screw hole, 24 annular groove, 3 auxiliary disc body, 31 auxiliary installation slot, 32 compression ring, 33 guide column, 34 counterbore, 4 bolt. DETAILED DESCRIPTION

[0016] The utility model will be further explained in connection with the drawings.

[0017] In order to make the utility model's purpose, technical scheme and advantage more clear and obvious, the following is in connection with the drawings and specific embodiment, and the utility model is further explained in detail. It should be understood that the specific embodiment described here is only used to explain the utility model, and is not used to limit the utility model.

[0018] Reference Figure 1 A kind of magnetic steel's fixed positioning device, including rotor disc and multiple magnetic steel 1, rotor disc is of split type structure, including main disc body 2 and auxiliary disc body 3, main disc body 2 annular array is opened multiple main installation slots 21, main installation slot is ladder structure, magnetic steel 1 is placed in main installation slot 21;Auxiliary disc body 3 annular array is opened multiple auxiliary installation slots 31, auxiliary installation slot 31 with main installation slot 21 one-to-one correspondence, the lower portion of auxiliary installation slot 31 is set up compression ring 32 along auxiliary installation slot a circle, compression ring 32 is pressed on the surface of magnetic steel 1 when main disc body 2 and auxiliary disc body 3 are combined. Specifically, magnetic steel 1 is placed in main installation slot 21, then auxiliary disc body 3 is combined with main disc body 2, that is, auxiliary installation slot 31 is combined with main installation slot 21, so that compression ring 32 is pressed on the surface of magnetic steel 1, magnetic steel is fixed, even in the case where the adhesive strength reduces, can also avoid the magnetic steel to fall off;Compression ring 32 adopts elastic rubber, avoids damaging magnetic steel;Main disc body 2 and auxiliary disc body 3 all adopt integrated structure.

[0019] In the embodiment, the peripheral annular array of the main disc body 2 is provided with a plurality of guide holes 22, the peripheral annular array of the auxiliary disc body 3 is provided with a plurality of guide columns 33, and the guide columns 33 correspond to the guide holes 22 one by one. The main disc body 2 and the auxiliary disc body 3 are preliminarily fixed through cooperation between the guide columns 33 and the guide holes 22; the number of the guide columns 33 and the guide holes 22 is at least three, and the guide columns 33 and the guide holes 22 are distributed in an equilateral triangle.

[0020] In the embodiment, the bottom of the guide hole 22 is provided with a threaded hole 23, the guide column 33 is internally provided with a counterbore 34, and the guide column 33 and the guide hole 22 are fixedly connected through a bolt 4. After the guide column 33 is inserted into the guide hole 22, the bolt 4 can be inserted into the counterbore 34 and screwed into the threaded hole 23 to fix the main disc body 2 and the auxiliary disc body 3 and fix the magnetic steel 1; the number of the threaded holes 23 is at least three, and the threaded holes 23 are distributed in an equilateral triangle, so as to improve the stability of the fixing, reduce the number of the bolts, and improve the work efficiency.

[0021] In the embodiment, the main disc body 2 is provided with an annular groove 24, and the auxiliary disc body 3 is provided with an annular strip 35, and the annular groove 24 and the annular strip 35 are clamped with each other. The annular groove 24 and the annular strip 35 are both centered, and the center of the main disc body 2 and the center of the auxiliary disc body 3 are also correspondingly clamped.

[0022] In the embodiment, the shapes of the main mounting groove 21, the auxiliary mounting groove 31 and the compression ring 32 are consistent with the shape of the magnetic steel, so that the magnetic steel 1 can be better fixed.

[0023] The above description is only used to explain the technical scheme of the utility model and is not limited. Other modifications or equivalent replacements to the technical scheme of the utility model made by those skilled in the art should be covered in the claim range of the utility model.

Claims

1. A device for securing and positioning magnetic steels comprising a rotor disk and a plurality of magnetic steels, characterized in that: The rotor disc is a split structure, comprising a main disc body and a secondary disc body, the main disc body is annularly arrayed with a plurality of main installation grooves, the main installation grooves are of a stepped structure, and the magnetic steel is placed in the main installation grooves; the secondary disc body is annularly arrayed with a plurality of secondary installation grooves, the secondary installation grooves correspond to the main installation grooves one by one, and a pressing ring is arranged at the lower part of the secondary installation groove along the secondary installation groove, and the pressing ring is pressed on the surface of the magnetic steel when the main disc body and the secondary disc body are combined.

2. The apparatus of claim 1 wherein: The outer periphery of the main disc body is annularly arrayed with a plurality of guide holes, and the outer periphery of the secondary disc body is annularly arrayed with a plurality of guide columns, which correspond to the guide holes one by one.

3. The apparatus of claim 2 wherein: The bottom of the guide hole is provided with a threaded hole, the guide column is internally provided with a counterbore, and the threaded hole and the guide column are fixedly connected by a bolt.

4. The magnet clamping apparatus of claim 1 wherein: An annular groove is formed on the main disc body, and an annular strip is formed on the secondary disc body, and the two are matched and clamped.

5. The magnet clamping apparatus of claim 1 wherein: The main installation groove, the secondary installation groove and the pressing ring are matched with the shape of the magnetic steel.

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