Rotor core lamination and rotor core lamination structure

Abstract

The utility model discloses a rotor core lamination, the central position of the central part of the rotor core lamination is provided with a central through hole, the periphery of the central part is provided with a plurality of winding parts used for winding coils in the circumferential direction, and the outer sides of the winding parts are provided with limiting parts used for limiting the movement of the coils. A center connecting structure is arranged on the inner edge of the center through hole, an outer side connecting structure is arranged in the middle of the winding parts, and when the upper and lower rotor iron core laminations are axially overlapped and connected, the connecting directions of the center connecting structure and the outer side connecting structure are opposite. The utility model also discloses a rotor iron core laminated structure which is formed by sequentially and axially connecting the top end rotor iron core laminated sheet, the plurality of rotor iron core laminated sheets in the middle position and the bottom end rotor iron core laminated sheet, and the formed rotor iron core laminated structure is reliable in connection and has better electromagnetic stability.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor technical field, especially a rotor core lamination and rotor core laminated structure. BACKGROUND

[0002] In prior art, the structure of motor usually includes rotor and stator, wherein the stator is internally provided with excitation coil, thereby being able to generate magnetic field, when the rotor is arranged at the center position of the stator and rotates in relative rotation mode, the rotor can make relative motion with the stator by the circumferential arrangement of several magnets, thereby enabling the rotor to convert electric energy into magnetic energy.

[0003] However, the plurality of iron core laminations which are sequentially axially laminated and connected may be displaced in actual production and connection process, and thus the plurality of iron core laminations which are axially arranged cannot be correctly connected and installed, and therefore it is very important to optimize and improve the structure of the rotor iron core lamination to make it more convenient for production and installation. UTILITY MODEL CONTENT

[0004] The utility model discloses a rotor iron core lamination and connected reliable rotor core laminated structure easy to manufacture, and aims at improving the connection stability of rotor core laminated structure and having stable electromagnetic performance.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a rotor iron core lamination, which comprises a center part arranged at a center position, a center through hole arranged at the center position of the center part, a plurality of winding parts arranged at the outer periphery of the center part in a circumferential direction for winding coil, and a limiting part arranged at the outer side of the winding part for limiting the movement of the coil.

[0006] A center connecting structure is arranged at the inner edge of the center through hole, and an outer side connecting structure is arranged in the middle of the plurality of winding parts, and the connecting directions of the center connecting structure and the outer side connecting structure are opposite when the upper and lower rotor iron core laminations are axially laminated and connected.

[0007] Preferably, the center connecting structure is a stepped positioning structure punched downward along the center through hole.

[0008] Preferably, the center connecting structure comprises a first connecting block arranged downward, the top end of the first connecting block is connected with the main body of the center part, the bottom end of the first connecting block is connected with a second connecting block, and the upper and lower rotor iron core laminations are extruded and connected through the upper second connecting block and the lower first connecting block.

[0009] Preferably, the distance between the bottom surface of the second connecting block and the bottom surface of the center part is half the thickness of the rotor iron core lamination.

[0010] Preferably, a stepped groove is formed between the top surface of the second connecting block and the top surface of the center portion.

[0011] Preferably, the outer side connecting structure is a protruding sheet punched upward from the winding portion by a punching process.

[0012] The utility model discloses still propose a kind of rotor core lamination structure of the application of the rotor core lamination, including top end rotor core lamination, the several rotor core laminations of being arranged in middle position in sequence axial setting, bottom end rotor core lamination;

[0013] Top end rotor core lamination center position is equipped with center connecting structure and the rotor core lamination of lower side is connected, and the winding portion of top end rotor core lamination is equipped with top end through-hole to accommodate the outer side connecting structure of the rotor core lamination of lower side;

[0014] Bottom end rotor core lamination center is equipped with bottom end center through-hole, and bottom end center through-hole inner side edge is connected with the outer side surface of the second connecting block of upper side cooperation, and the winding portion of bottom end rotor core lamination is equipped with outer side connecting structure and the outer side connecting structure of the rotor core lamination of upper side cooperation is connected.

[0015] Preferably, when the top end rotor core lamination, the several rotor core laminations and the bottom end rotor core lamination are compressed and laminated, the center portion is subjected to a first compression force, and the winding portion is subjected to a second compression force, and the first compression force is applied earlier than the second compression force.

[0016] Preferably, the stepped groove provided on the top surface of the top end rotor core lamination is provided with a filling washer and a first connecting block clamped thereon.

[0017] The utility model technical scheme has the following advantages relative to the prior art:

[0018] In the utility model technical scheme, the center through-hole is provided in the center portion of the rotor core lamination, the outer periphery of the center portion is provided with a plurality of winding portions for winding coils in a circumferential direction, and the outer side of the winding portion is provided with a limiting portion for limiting the movement of the coil. The inner edge of the center through-hole is provided with a center connecting structure, and the outer side connecting structure is provided in the middle of the plurality of winding portions. When the upper and lower rotor core laminations are axially laminated and connected, the connection directions of the center connecting structure and the outer side connecting structure are opposite, and the rotor core lamination structure composed of the top end rotor core lamination, the plurality of rotor core laminations in the middle position and the bottom end rotor core lamination is connected in sequence in an axial direction, which is reliable in connection and has better electromagnetic stability. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description, obviously, the drawings described in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained according to the structures shown in these drawings without creative labor.

[0020] Figure 1 It is a three-dimensional structural schematic diagram of the rotor core lamination of the present application.

[0021] Figure 2 It is a sectional view of the rotor core lamination of the present application.

[0022] Figure 3 It is a structural exploded view of the rotor core lamination structure of the present application.

[0023] Figure 4 It is a sectional view of the rotor core lamination structure of the present application.

[0024] Explanation of the reference numerals:

[0025] 1, center part; 11, center through hole; 12, center connecting structure; 121, first connecting block; 122, second connecting block; 2, winding part; 3, limiting part; 101, top end rotor core lamination; 1011, top end through hole; 102, rotor core lamination; 103, bottom end rotor core lamination; 1031, bottom end center through hole; 104, filling washer.

[0026] The realization, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, obviously, the described embodiments are only some embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0028] The present application provides a rotor core lamination.

[0029] Please refer to Figure 1 and Figure 2In the rotor core lamination of the embodiment of the utility model, the center part 1 is provided with a center through hole 11 in the center position, the center through hole 11 is used for the rotation center shaft of the rotor to pass through, the outer periphery of the center part 1 is provided with a plurality of winding parts 2 in the circumferential direction, the winding part 2 is provided with a limiting part 3 outside for limiting the movement of the coil, therefore, the shape structure of the rotor core lamination is observed from the axial perspective, the outer periphery of the limiting part 3 connected to the outside of the winding part 2 can form the outer periphery of the rotor core lamination as a whole.

[0030] The utility model discloses a center connecting structure 12 is arranged on the inner edge of the center through hole 11, and the outer side connecting structure 21 is arranged in the middle of the plurality of winding parts 2, when the upper and lower rotor core laminations are connected axially, the connecting direction of the center connecting structure 12 and the outer side connecting structure 21 is opposite.

[0031] The utility model discloses a center connecting structure 12 is along the center through hole 11 and is downwardly punched into the stepped positioning structure. Specifically, the center connecting structure 12 includes a first connecting block 121 extending downward, the top end of the first connecting block 121 is connected to the main body of the center part 1, the bottom end of the first connecting block 121 is connected to a second connecting block 122, and the upper and lower rotor core laminations are connected by extrusion through the second connecting block 122 above and the first connecting block 121 below.

[0032] When the upper and lower rotor core laminations are connected axially, the second connecting block 122 of the rotor core lamination above will move axially downward and enter the inner position of the first connecting block 121 of the rotor core lamination below, and the extrusion connection between the second connecting block 122 above and the first connecting block 121 below is realized. In the actual product, the outer diameter of the outer periphery of the second connecting block 122 is slightly larger than the inner diameter of the inner periphery of the first connecting block 121, so when the upper and lower rotor core laminations are connected by axial compression, when the second connecting block 122 above enters the inside of the first connecting block 121 below, the second connecting block 122 is subjected to the force towards the center position and deforms to some extent, thereby enabling the second connecting block 122 and the first connecting block 121 to be closely combined and connected.

[0033] In terms of size limitation, the distance between the bottom surface of the second connecting block 122 and the bottom surface of the center part 1 is greater than half the thickness of the rotor core lamination, thereby ensuring that the second connecting block 122 above and the first connecting block 121 below are not easily separated after being combined and connected.

[0034] In shape, the second connecting block 122 top surface and the center part 1 top surface form a stepped groove, and can be punched, and the center connecting structure 12 is punched downward by the mold, and the stepped groove structure is formed between the center part 1, the first connecting block 121 and the second connecting block 122, so that the two rotor core laminations are axially combined and connected.

[0035] In addition, the outer connecting structure 21 is a protruding piece punched upward from the winding part 2 by the punching process, so when viewed from the side, the center connecting structure 12 of the rotor core lamination is an axial downward setting structure, and the outer connecting structure 21 is an axial upward setting structure, and the outer connecting structure 21 is adapted to the winding part 2. The outer connecting structure can be provided on all winding parts 2, or when the winding part 2 is a specific number, it is adapted to be set at intervals.

[0036] Please see Figure 3 and Figure 4 The utility model discloses a rotor core lamination structure of application rotor core lamination, including top end rotor core lamination 101, setting a plurality of rotor core laminations 102 in intermediate position, bottom end rotor core lamination 103 that are set in sequence axial. Figure 3 As limited by the map, this Figure 3 only lists a top end rotor core lamination 101, a rotor core lamination 102 in intermediate position, a bottom end rotor core lamination 103, but in actual product, can include a top end rotor core lamination 101, a bottom end rotor core lamination 103 and a plurality of rotor core laminations 102.

[0037] The top end rotor core lamination 101 center position is provided with center connecting structure 12 and the rotor core lamination 102 below is combined and connected, and the winding part 2 of the top end rotor core lamination 101 is provided with top end through hole 1011 to accommodate the outer connecting structure 21 of the rotor core lamination 102 below.

[0038] The bottom end rotor core lamination 103 is provided with a bottom end center through hole 1031 in the center, and the inner side edge of the bottom end center through hole 1031 is connected with the outer side of the second connecting block 122, that is, the inner diameter of the bottom end center through hole 1031 is the same as the outer diameter of the outer periphery of the second connecting block 122, or the inner diameter of the bottom end center through hole 1031 is slightly smaller than the outer diameter of the outer periphery of the second connecting block 122. The winding part 2 of the bottom end rotor core lamination 103 is provided with an outer side connecting structure 21 which is connected with the outer side connecting structure 21 of the upper rotor core lamination 102, and the outer side connecting structure 21 of the lower bottom end rotor core lamination 103 enters the outer side connecting structure 21 of the upper rotor core lamination 102 upward to realize the axial connection of the two.

[0039] When all the top end rotor core laminations 101, the plurality of rotor core laminations 102 and the bottom end rotor core lamination 103 are pressed and laminated, the center part 1 of all the laminations will be subjected to a downward first pressing force F1, and after the center part 1 is axially connected through the center connecting structure 12, the winding part 2 of all the laminations will be subjected to an upward second pressing force F2, so that the outer sides of all the laminations are sequentially pressed and connected. At the same time, in the actual production process, the first pressing force F1 acts earlier than the second pressing force F2. Since in the actual production process, a plurality of laminations are axially sequentially laminated and placed, and then connected by pressing through the upper and lower connecting structures, if part of the laminations are shifted, the structure of the laminated laminations after pressing cannot be completely centered, and the shaft of the subsequent rotor cannot pass through the center through hole 11 normally. The utility model first applies the first pressing force F1 to the center connecting structure 12 of the center part 1, and enters the inside of the first connecting block 121 through the second connecting block 122 above, so that the two are axially preliminarily connected through the center connecting structure 12, and the two laminations can still be well centered after being axially connected. The winding part 2 on the outer side is sequentially connected in the axial direction through the second pressing force F2, so that the upper and lower adjacent rotor core laminations can be completely positioned and connected, and the connection mode of first center and then periphery can effectively avoid the internal stress caused by the size not being suitable in the pressing process, and the completely laminated rotor core laminated structure has good tightness.

[0040] Preferably, the step groove provided on the top surface of the top end rotor core lamination 101 is provided with a filling gasket 104 which is clamped and connected with the first connecting block 121, so that the step groove at the top end of the top end rotor core lamination 101 at the top end position is filled with the filling gasket 104, and after the coil is wound on the winding part 2, the rotor core laminated structure has better and stable electromagnetic performance.

[0041] The above merely describes preferred embodiments of the present application, and is not intended to limit the patent scope of the present application, and any equivalent structural transformation, direct / indirect application in other related technical fields, or the like, made under the concept of the present application, using the content of the present application specification and drawings, are included in the patent protection scope of the present application.

Claims

1. A rotor core lamination, characterized in that, It includes a central part located at the center position, a central through hole at the center position of the central part, and a number of winding parts for winding coils arranged circumferentially around the outer periphery of the central part. A limiting part for restricting the movement of the coil is provided on the outer side of the winding parts. The inner edge of the central through hole is provided with a central connecting structure, and the middle of several winding parts is provided with an outer connecting structure. When the upper and lower rotor core laminations are axially stacked and connected, the connection directions of the central connecting structure and the outer connecting structure are opposite.

2. The rotor core laminations as described in claim 1, characterized in that, The central connecting structure is a stepped positioning structure that is punched downwards along the central through hole.

3. The rotor core laminations as described in claim 2, characterized in that, The central connection structure includes a first connecting block extending downwards, the top of the first connecting block being connected to the main body of the central part, and the bottom of the first connecting block being connected to a second connecting block. The upper and lower rotor core laminations are connected by pressing together through the upper second connecting block and the lower first connecting block.

4. The rotor core laminations as described in claim 3, characterized in that, The distance between the bottom surface of the second connecting block and the bottom surface of the central part is half the thickness of the rotor core laminations.

5. The rotor core laminations as described in claim 4, characterized in that, A stepped groove is formed between the top surface of the second connecting block and the top surface of the center part.

6. The rotor core laminations as described in claim 5, characterized in that, The outer connecting structure is a protruding piece that is stamped upward on the winding part by a stamping process.

7. A rotor core laminate structure employing the rotor core laminations as described in claim 6, characterized in that, It includes a top rotor core lamination arranged axially in sequence, several rotor core laminations arranged in the middle position, and a bottom rotor core lamination; The top rotor core lamination has a central connecting structure at its center position, which is connected to the rotor core lamination below. The winding part of the top rotor core lamination has a top through hole to accommodate the outer connecting structure of the rotor core lamination below. The bottom rotor core lamination has a bottom center through hole, and the inner edge of the bottom center through hole is connected to the outer side of the upper second connecting block. The winding part of the bottom rotor core lamination has an outer connecting structure that is connected to the outer connecting structure of the upper rotor core lamination.

8. The rotor core laminated structure as described in claim 7, characterized in that, When the top rotor core lamination, several rotor core laminations, and the bottom rotor core lamination are pressed together, the center part is subjected to a first pressing force, and the winding part is subjected to a second pressing force. The first pressing force acts before the second pressing force.

9. The rotor core laminated structure as described in claim 7, characterized in that, The top surface of the rotor core laminations has a stepped groove with a filling washer that is tightly connected to the first connecting block.

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