A stator insulation cover and its assembly structure

Abstract

The present invention relates to a stator insulation cover and its assembly structure, wherein the stator insulation cover has a cover body, the cover body includes an upper plane, and a side enclosure extending downward along the edge of the upper plane; the upper plane and the side enclosure are an integral part; the upper plane is provided with a positioning through hole; the edge of the positioning through hole is provided with a plurality of clamping components distributed along the axis of the positioning through hole; the clamping component includes a groove, the groove extends along the edge of the positioning through hole; a notch is provided on the bottom surface of the groove for the card block to enter axially; a convex block is also provided on the bottom surface of the groove, and a first guiding inclined surface is provided at one end of the upper end surface of the convex block close to the notch, the lower end of the first guiding inclined surface corresponds to the notch, and a card slot for the card block to slide into is formed between one end of the convex block away from the notch and one end of the groove away from the notch. At the same time, the assembly structure of the stator insulation cover is provided, and the protection height of the stator insulation cover can be adjusted according to needs, which greatly improves the adaptability of the stator insulation cover.

Description

Technical Field

[0001] The present invention relates to motor components, and particularly to a stator insulation cover and its assembly structure. Background Art

[0002] The stator is the stationary part of the motor. The stator consists of an iron core, windings, and an installed insulation skeleton. The main function of the stator is to generate a rotating magnetic field. To better protect the windings, stator insulation covers are often provided at both ends of the windings. The stator insulation cover protects the windings by covering the winding ends. The winding ends are generally located at both ends of the iron core. Since motors with different powers have different heights of winding ends, different motors are often equipped with stator insulation covers of different sizes. This greatly increases the number of specifications of the stator insulation covers, increasing the storage pressure and also affecting the assembly efficiency. Summary of the Invention

[0003] The first object of the present invention is to provide a stator insulation cover with adjustable installation height and strong versatility.

[0004] The technical solution for achieving the first object of the present invention is: In the present invention, the stator insulation cover has a cover body; the cover body includes an upper plane and a side surround extending downward along the edge of the upper plane; the upper plane and the side surround are an integral part; a positioning through-hole is provided on the upper plane; a plurality of clamping components are provided on the edge of the positioning through-hole and are circumferentially distributed along the axis of the positioning through-hole; each clamping component includes a groove extending along the edge of the positioning through-hole; a notch for the axial entry of a clamping block is provided on the bottom surface of the groove; a convex block is also provided on the bottom surface of the groove, and a first guiding inclined surface is provided at one end of the upper end surface of the convex block close to the notch, the low end of the first guiding inclined surface corresponds to the notch, and a clamping slot for the clamping block to slide into is formed between the end of the convex block away from the notch and the end of the groove away from the notch.

[0005] The upper end surface of the above-mentioned convex block is higher than the upper plane.

[0006] Heat dissipation through-holes are evenly distributed on the above-mentioned side surround.

[0007] As an optimized design, three clamping components are provided on the edge of the positioning through-hole and are evenly circumferentially distributed along the axis of the positioning through-hole.

[0008] Further, a second guiding inclined surface is provided on the side of the notch not corresponding to the first guiding inclined surface, and the high end of the second guiding inclined surface is naturally connected to the upper plane.

[0009] The second object of the present invention is to provide an assembly structure that can be freely adjusted for installation according to the height of the stator winding.

[0010] The technical solution for achieving the second object of the present invention is as follows: It includes a wound stator; the wound stator includes a stator core, an insulating skeleton, and a stator winding; insulating skeletons are fixedly provided at both ends of the stator core; the stator winding is wound around the stator core and the insulating skeleton; the above-mentioned stator insulating covers are installed at both ends of the wound stator; an installation shaft body coaxial with the stator core and used to pass through the positioning through-hole of the stator insulating cover is provided on the insulating skeleton; a plurality of clamping blocks are provided on the circumferential wall of the installation shaft body and are circumferentially distributed along the axis of the installation shaft body; the number of the clamping blocks is the same as the number of notches on the corresponding stator insulating cover, and the clamping blocks correspond to the notches on the stator insulating cover; the stator insulating cover is limited and clamped with the wound stator after the clamping blocks are matched with the first guiding inclined surface on the upper end surface of the convex block, or is limited and clamped with the wound stator after the clamping blocks are matched with other parts of the upper end surface of the convex block except the first guiding inclined surface, or is limited and clamped with the wound stator after the clamping blocks are matched with the clamping grooves.

[0011] A second guiding inclined surface is provided on the side of the above-mentioned notch that does not correspond to the first guiding inclined surface, and the high end of the second guiding inclined surface is naturally connected to the upper plane.

[0012] The above-mentioned stator insulating cover can also be limited and clamped with the wound stator after the clamping blocks are matched with the upper plane.

[0013] The present invention has positive effects: (1) In the present invention, the stator insulating cover can be clamped with the wound stator through the clamping assembly, and the installation is convenient and fast; and it can well protect the winding on the side.

[0014] (2) In the present invention, the upper end surface of the convex block has a first guiding inclined surface and a plane. Therefore, as the clamping block slides on the upper end surface of the convex block, the distance between the stator insulating cover and the wound stator can be adjusted, so that only one specification of the stator insulating cover can be used to adapt to the wound stators with different heights of the end parts of the wire packages of different windings (that is, the protruding parts of the windings in the axial direction of the wound stator), greatly improving the compatibility of the stator insulating cover and reducing the production cost and storage pressure.

[0015] (3) In the present invention, the upper end surface of the convex block is higher than the upper plane, and under the action of the second guiding inclined surface, the adjustment height of the stator insulating cover is more diverse, that is, it includes the height adjustment range from the low end to the high end of the first guiding inclined surface, and also includes the adjustment height of the upper surface of the convex block except the first guiding inclined surface, and also includes the adjustment height of the upper plane, and also includes the adjustment height when the opening block is located in the clamping groove.

[0016] (4) The present invention can effectively improve the heat dissipation through the heat dissipation through-holes. Description of the Drawings

[0017] In order to make the content of the present invention easier to be clearly understood, the following further details the present invention according to specific embodiments in combination with the drawings, where

[0018] Figure 1 This is a schematic structural view of the stator insulating cover in the present invention;

[0019] Figure 2 is Figure 1 an enlarged view of part A in

[0020] Figure 3 This is a schematic structural view of the assembly structure of the stator insulating cover in the present invention;

[0021] Figure 4 This is an exploded view of the assembly structure of the stator insulating cover in the present invention. Detailed implementation manners

[0022] See Figure 1 and Figure 2 In the present invention, the stator insulating cover has a cover body; the cover body includes an upper plane 1 and a side surround 2 extending downward along the edge of the upper plane 1; the upper plane 1 and the side surround 2 are an integral part; a positioning through hole 3 is provided on the upper plane 1; three clamping assemblies 4 are evenly distributed in a circumferential direction along the axis of the positioning through hole 3 at the edge of the positioning through hole 3; each clamping assembly 4 includes a groove extending along the edge of the positioning through hole 3; a notch 41 for the axial entry of a clamping block 5 is provided on the bottom surface of the groove; a convex block 42 is further provided on the bottom surface of the groove, a first guiding inclined surface 421 is provided at one end of the upper end surface of the convex block 42 close to the notch 41, the low end of the first guiding inclined surface 421 corresponds to the notch 41, and a clamping groove 43 for the clamping block 5 to slide into is formed between the end of the convex block 42 away from the notch 41 and the end of the groove away from the notch 41.

[0023] The upper end surface of the convex block 42 protrudes above the upper plane 1.

[0024] Heat dissipation through holes 21 are evenly distributed on the side surround 2.

[0025] A second guiding inclined surface 6 is provided on the side of the notch 41 not corresponding to the first guiding inclined surface 421, and the high end of the second guiding inclined surface 6 is naturally connected to the upper plane 1.

[0026] See Figure 3 and Figure 4, the assembly structure of the stator insulating cover in the present utility model includes a wound stator 7, and the wound stator 7 includes a stator core 71, an insulating skeleton 72, and a stator winding; insulating skeletons 72 are fixedly provided at both ends of the stator core 71; the stator winding is wound around the stator core 71 and the insulating skeleton 72; the above-mentioned stator insulating covers are installed at both ends of the wound stator 7; an installation shaft body 73 coaxial with the stator core 71 and used to pass through the positioning through hole 3 of the stator insulating cover is provided on the insulating skeleton 72 of the wound stator 7; three clamping blocks 5 evenly distributed in a circumferential manner along the axis of the installation shaft body 73 are provided on the circumferential wall of the installation shaft body 73; the clamping blocks 5 correspond to the notches 41 on the stator insulating cover one by one; the stator insulating cover is limited and clamped with the wound stator 7 after the clamping block 5 is matched with the first guiding inclined surface 421 on the upper end surface of the convex block 42, or is limited and clamped with the wound stator 7 after the clamping block 5 is matched with other parts of the upper end surface of the convex block 42 except the first guiding inclined surface 421, or is limited and clamped with the wound stator 7 after the clamping block 5 is matched with the clamping groove 43, or is limited and clamped with the wound stator 7 after the clamping block 5 is matched with the upper plane 1.

[0027] The assembly process of the present invention is as follows:

[0028] First, the installation shaft body 73 of the insulating skeleton 72 passes through the positioning through hole 3 of the stator insulating cover, and the stator insulating cover moves along the installation shaft body 73 towards the stator core 71; then the clamping block 5 on the installation shaft body 73 axially passes through the notch 41 and enters the groove of the clamping assembly 4; then the stator insulating cover is rotated so that the clamping block 5 moves along the first guiding inclined surface 421 or the second guiding inclined surface 6; when the stator insulating cover covers the stator core 71 as the clamping block 5 moves, the rotation of the stator insulating cover is stopped, and at this time, the clamping block 5 is matched with the upper surface of the convex block 42 or the clamping groove 43 or the upper plane 1 to limit the stator insulating cover, and the clamping is completed.

[0029] During actual use, there is no need to consider the height of the end part of the stator winding (that is, the part of the winding that protrudes in the axial direction of the wound stator 7, and finally it is located inside the stator insulating cover); during assembly, the clamping block 5 can find a suitable position on the upper surface of the convex block 42 or the clamping groove 43 or the upper plane 1 as the stator insulating cover rotates to achieve clamping.

[0030] In the above specific embodiments, the purpose, technical solution, and beneficial effects of the present invention are further described in detail. It should be understood that the above are only specific embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A stator insulation cover, having a cover body; It is characterized in that: The cover body includes an upper plane and a side surround extending downward along the edge of the upper plane; the upper plane and the side surround are an integral part; a positioning through-hole is provided on the upper plane; a plurality of clamping components are provided on the edge of the positioning through-hole and are circumferentially distributed along the axis of the positioning through-hole; the clamping component includes a groove, and the groove extends along the edge of the positioning through-hole; a notch for the axial entry of the clamping block is provided on the bottom surface of the groove; a convex block is also provided on the bottom surface of the groove, and a first guiding inclined surface is provided at one end of the upper end surface of the convex block close to the notch, the low end of the first guiding inclined surface corresponds to the notch, and a clamping slot for the clamping block to slide into is formed between the end of the convex block away from the notch and the end of the groove away from the notch; The upper end surface of the convex block protrudes above the upper plane; Three clamping components are provided on the edge of the positioning through-hole and are circumferentially and evenly distributed along the axis of the positioning through-hole.

2. A stator insulation cover according to claim 1, It is characterized in that: Heat dissipation through-holes are evenly distributed on the side surround.

3. A stator insulation cover according to claim 1, It is characterized in that: A second guiding inclined surface is provided on the side of the notch not corresponding to the first guiding inclined surface, and the high end of the second guiding inclined surface is naturally connected to the upper plane.

4. A stator insulation cover assembly structure, including a wound stator; the wound stator includes a stator core, an insulation skeleton and a stator winding; insulation skeletons are fixedly provided at both ends of the stator core; the stator winding is wound around the stator core and the insulation skeleton; It is characterized in that: A stator insulation cover according to claim 1 or 2 or 3 is installed at both ends of the wound stator; an installation shaft body coaxial with the stator core and used to pass through the positioning through-hole of the stator insulation cover is provided on the insulation skeleton; a plurality of clamping blocks are provided on the circumferential wall of the installation shaft body and are circumferentially distributed along the axis of the installation shaft body; the number of the clamping blocks is the same as the number of the notches on the corresponding stator insulation cover, and the clamping blocks correspond to the notches on the stator insulation cover; the stator insulation cover is limited and clamped with the wound stator after the clamping block is matched with the first guiding inclined surface of the upper end surface of the convex block, or is limited and clamped with the wound stator after the clamping block is matched with other parts of the upper end surface of the convex block except the first guiding inclined surface, or is limited and clamped with the wound stator after the clamping block is matched with the clamping slot.

5. A stator insulation cover assembly structure according to claim 4, It is characterized in that: A second guiding inclined surface is provided on the side of the notch not corresponding to the first guiding inclined surface, and the high end of the second guiding inclined surface is naturally connected to the upper plane.

6. A stator insulation cover assembly structure according to claim 5, It is characterized in that: The stator insulation cover can also be limited and clamped with the wound stator after the clamping block is matched with the upper plane.

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