T-shaped iron core and stator

Abstract

The utility model discloses a T-shaped iron core and a stator, belonging to the motor field, comprising a main body and an insulating layer arranged on the surface of the main body, the main body comprises an outer end portion, an inner end portion and a connecting portion connecting the outer end portion and the inner end portion, the width of the connecting portion is smaller than the width of the outer end portion and the width of the inner end portion, a first insulating part of the insulating layer wraps the outer surface of the connecting part, a second insulating part wraps the bottom wall, facing the inner end part, of the outer end part, a third insulating part wraps the side wall, facing the outer end part, of the inner end part, a winding groove is formed among the first insulating part, the second insulating part and the third insulating part, and the thickness of the insulating layer is 0.08 mm-0. 2 mm. Through the design, the winding structure is simple, and the winding structure is easy to manufacture. The stator and rotor iron core insulation performance is improved, the thickness of the insulation layer is reduced by 70% compared with the traditional insulation layer thickness thin wall characteristic, the thickness of the insulation layer is greatly reduced, the stator and rotor T-shaped block iron cores are smaller in size and lighter after being spliced into a circle, the application scene is wider, and the special development requirements of miniaturization, light weight and performance of the motor iron core assembly are met.

Description

Technical Field

[0001] This utility model relates to the field of motor manufacturing, and in particular to T-shaped iron cores and equipment including the aforementioned T-shaped iron cores. Background Technology

[0002] The stator is the stationary part of the electric motor. It consists of three parts: the stator core, the stator windings, and the frame. The main function of the stator is to generate a rotating magnetic field, while the main function of the rotor is to be cut by magnetic lines of force within this rotating magnetic field, thereby generating (outputting) current. In the motor, insulating material surrounding the conductors isolates the turns from the grounded stator core to ensure safe operation.

[0003] In existing DC motors, during the assembly of plastic-coated stators, phase-separating paper is manually inserted between each stator component for insulation purposes. This process is cumbersome and increases production costs. Furthermore, the plastic coating structure of the stator is unreasonable, resulting in a large overall stator size, which is not conducive to the miniaturization of the motor. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, one of the objectives of this utility model is to provide a T-shaped iron core with good insulation performance and small size.

[0005] In order to overcome the shortcomings of the existing technology, the second objective of this utility model is to provide a stator with good insulation performance and small size.

[0006] One of the objectives of this utility model is achieved through the following technical solution:

[0007] A T-shaped iron core includes a main body and an insulating layer disposed on the surface of the main body. The main body includes an outer end, an inner end, and a connecting portion connecting the outer end and the inner end. The width of the connecting portion is smaller than the width of the outer end and the width of the inner end. The insulating layer includes a first insulating portion, a second insulating portion, and a third insulating portion. The first insulating portion covers the outer surface of the connecting portion, the second insulating portion covers the bottom wall of the outer end facing the inner end, and the third insulating portion covers the side wall of the inner end facing the outer end. A winding groove is formed between the first insulating portion, the second insulating portion, and the third insulating portion. The thickness of the insulating layer is 0.08 mm to 0.2 mm.

[0008] Furthermore, the thickness of the insulating layer is 0.15 mm.

[0009] Furthermore, the insulating layer is made of plastic.

[0010] Furthermore, the outer end portion is provided with a insertion slot and an insertion strip on both sides.

[0011] Furthermore, the outer end portion also includes an outer wall, which is located on the side of the outer end portion away from the inner end portion, and the outer wall has a recess for forming a weld bead corresponding to the insertion groove and the insertion strip.

[0012] Furthermore, the insulating layer also includes two insulating ends, which are located at both ends of the first insulating portion, and each insulating end is provided with a conductive hole.

[0013] Furthermore, the insulating end is also provided with a snap-fit ​​groove, which is located at the corner of the insulating end.

[0014] Furthermore, the snap-fit ​​groove is stepped.

[0015] The second objective of this utility model is achieved by the following technical solution:

[0016] The stator includes multiple T-shaped iron cores of any one of the above types. The insertion strips of two adjacent T-shaped iron cores are inserted into the insertion slots, so that the multiple T-shaped iron cores are connected to form a circular structure. The outer walls of the outer ends of the multiple T-shaped iron cores form the outer circle of the stator, and the inner walls of the inner ends of the multiple T-shaped iron cores form the inner circle of the stator.

[0017] Furthermore, the outer wall has recesses corresponding to the insertion slot and the insertion strip, and the recesses of two adjacent T-shaped iron cores form weld beads, which extend along the axial direction of the stator.

[0018] Compared with existing technologies, the T-shaped iron core of this utility model includes a main body and an insulating layer disposed on the surface of the main body. The main body includes an outer end, an inner end, and a connecting part connecting the outer end and the inner end. The width of the connecting part is smaller than the width of the outer end and the width of the inner end. The insulating layer includes a first insulating part, a second insulating part, and a third insulating part. The first insulating part covers the outer surface of the connecting part, the second insulating part covers the bottom wall of the outer end facing the inner end, and the third insulating part covers the side wall of the inner end facing the outer end. A winding groove is formed between the first insulating part, the second insulating part, and the third insulating part. The thickness of the insulating layer is 0.08mm-0.2mm. Through the above design, the insulation performance of the stator and rotor iron core is improved. The insulation layer thickness is 70% less than the thin-walled characteristic of traditional insulation layers, which significantly reduces the insulation layer thickness. After splicing the stator and rotor T-shaped block iron cores, the volume is smaller and lighter, and the application scenarios are wider. This realizes the special needs of the development of motor iron core assemblies towards miniaturization, lightweighting, and performance improvement. Attached Figure Description

[0019] Figure 1 This is a perspective view of the T-shaped iron core of this utility model;

[0020] Figure 2 for Figure 1 Exploded view of the T-shaped iron core;

[0021] Figure 3 for Figure 1 A three-dimensional sectional view of the T-shaped iron core;

[0022] Figure 4 This is a perspective view of the stator of this utility model.

[0023] In the diagram: 10. T-shaped iron core; 11. Main body; 110. Connecting part; 111. Outer end; 1110. Insertion slot; 1111. Insertion strip; 1112. Outer wall; 1113. Bottom wall; 112. Inner end; 1120. Side wall; 1121. Inner wall; 113. Groove; 12. Insulating layer; 120. First insulating part; 121. Second insulating part; 122. Third insulating part; 123. Insulating end; 1230. Conductive hole; 1231. Snap-on groove; 124. Receiving part; 125. Winding groove. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or it can be fixed through another intermediate component. When a component is said to be "connected to" another component, it can be directly connected to the other component or it may be fixed through another intermediate component. When a component is said to be "set on" another component, it can be set directly on the other component or it may be set through another intermediate component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0027] Please see Figures 1 to 3 The T-shaped iron core 10 of this utility model is used to form a stator. The T-shaped iron core 10 includes a main body 11 and an insulating layer 12.

[0028] The main body 11 is made of conductive material and is T-shaped. The main body 11 includes an outer end portion 111, a connecting portion 110, and an inner end portion 112. The two ends of the connecting portion 110 are fixedly connected to the outer end portion 111 and the inner end portion 112, respectively. The width of the outer end portion 111 is greater than the width of the connecting portion 110, and the width of the inner end portion 112 is greater than the width of the connecting portion 110. The main body 11 is symmetrical about its centerline. A groove 113 is formed between the outer end portion 111, the connecting portion 110, and the inner end portion 112.

[0029] Specifically, the outer end portion 111 has insertion slots 1110 and insertion strips 1111 on both sides. The insertion slots 1110 are used to insert into the insertion strips 1111 of adjacent T-shaped iron cores 10, connecting two adjacent T-shaped iron cores 10. The outer end portion 111 has an outer wall 1112 on the side away from the connecting part 110. The outer wall 1112 is arc-shaped, and the outer walls 1112 of multiple T-shaped iron cores 10 form the outer circle of the stator. The edge of the outer wall 1112 has a recess corresponding to the insertion slots 1110 and insertion strips 1111. The recesses of two adjacent T-shaped iron cores 10 form a weld bead. The weld bead is straight and extends along the axial direction of the stator, used for welding and fixing multiple T-shaped iron cores 10 after connection. The outer end portion 111 has a bottom wall 1113 on the side facing the inner end portion 112. The cross-section of the bottom wall 1113 is straight.

[0030] The inner end portion 112 is provided with a side wall 1120 and an inner wall 1121. There are two side walls 1120, and the two side walls 1120 are inclined and arranged in a figure-eight shape. The inner wall 1121 is located on the side of the inner end portion 112 away from the outer end portion 111. The inner wall 1121 is an arc surface, and the inner walls 1121 of the multiple T-shaped iron cores 10 form the inner circle of the stator.

[0031] An insulating layer 12 covers the surface of the main body 11, thus insulating the main body 11. In this embodiment, the insulating layer 12 is made of plastic, and its thickness is 0.08 mm to 0.2 mm. Preferably, the thickness of the insulating layer 12 is 0.15 mm. The insulating layer 12 includes a first insulating portion 120, a second insulating portion 121, a third insulating portion 122, and an insulating end 123.

[0032] The first insulating portion 120 covers the surface of the connecting portion 110. The first insulating portion 120 has a rectangular hollow structure and includes four side portions. A receiving portion 124 is formed inside the first insulating portion 120. The second insulating portion 121 covers the bottom wall 1113, and the third insulating portion 122 covers the side wall 1120. The first insulating portion 120, the second insulating portion 121, and the third insulating portion 122 form a winding groove 125. There are two insulating ends 123, which are fixed to both ends of the second insulating portion 121. Each insulating end 123 is provided with a conductive hole 1230 and a snap-fit ​​groove 1231. The snap-fit ​​groove 1231 is located at the corner of the insulating end 123 and is used to fix the stator to other components. The snap-fit ​​groove 1231 is stepped and also reduces the thickness of the insulating end 123.

[0033] Please continue reading. Figure 4 Multiple T-shaped iron cores 10 form a stator. The insertion slots 1110 of two adjacent T-shaped iron cores 10 are inserted and fixed with the insertion strips 1111. At this time, the recesses of two adjacent T-shaped iron cores 10 form weld beads for welding of two adjacent T-shaped iron cores 10.

[0034] The insulation layer 12 of the T-shaped iron core 10 of this utility model has a thickness of 0.08mm-0.2mm. Through the structural design of the insulation layer 12, the T-shaped iron core 10 has good insulation performance, a small insulation layer 12 thickness, and a small T-shaped iron core 10 volume, which is conducive to the miniaturization and weight reduction of the stator.

[0035] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the concept of this utility model. These are all equivalent modifications and improvements made to the above embodiments based on the essential technology of this utility model, and all of these fall within the protection scope of this utility model.

Claims

1. A T-shaped iron core, comprising a main body and an insulating layer disposed on the surface of the main body, the main body comprising an outer end, an inner end, and a connecting portion connecting the outer end and the inner end, wherein the width of the connecting portion is smaller than the width of the outer end and the width of the inner end, characterized in that: The insulating layer includes a first insulating portion, a second insulating portion, and a third insulating portion. The first insulating portion covers the outer surface of the connecting portion, the second insulating portion covers the bottom wall of the outer end facing the inner end, and the third insulating portion covers the side wall of the inner end facing the outer end. A winding groove is formed between the first insulating portion, the second insulating portion, and the third insulating portion. The thickness of the insulating layer is 0.08mm-0.2mm.

2. The T-shaped iron core according to claim 1, characterized in that: The thickness of the insulating layer is 0.15 mm.

3. The T-shaped iron core according to claim 1, characterized in that: The insulating layer is made of plastic.

4. The T-shaped iron core according to claim 1, characterized in that: The outer end has a connector slot and a connector strip on both sides.

5. The T-shaped iron core according to claim 4, characterized in that: The outer end portion also includes an outer wall, which is located on the side of the outer end portion away from the inner end portion. The outer wall has a recess for forming a weld bead corresponding to the insertion groove and the insertion strip.

6. The T-shaped iron core according to claim 1, characterized in that: The insulating layer further includes insulating ends, and there are two insulating ends, which are respectively located at both ends of the first insulating part. Each insulating end is provided with a conductive hole.

7. The T-shaped iron core according to claim 6, characterized in that: The insulating end is also provided with a snap-fit ​​groove, which is located at the corner of the insulating end.

8. The T-shaped iron core according to claim 7, characterized in that: The buckle groove is stepped.

9. A stator, characterized in that: The device includes multiple T-shaped iron cores as described in any one of claims 1-8, with the insertion strips of two adjacent T-shaped iron cores inserted into the insertion slots, so that the multiple T-shaped iron cores are connected to form a circular structure, the outer walls of the outer ends of the multiple T-shaped iron cores form the outer circle of the stator, and the inner walls of the inner ends of the multiple T-shaped iron cores form the inner circle of the stator.

10. The stator according to claim 9, characterized in that: The outer wall has recesses corresponding to the insertion slot and the insertion strip. The recesses of two adjacent T-shaped iron cores form a weld bead, which extends along the axial direction of the stator.

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