core, iron core

Abstract

The utility model discloses an iron core belongs to motor field, including main body and setting at the insulating layer of main body surface, and the insulating layer forms insulating end respectively at the both ends of the outer end part of main body, and the insulating end includes first end plate, second end plate and reinforcing rib, and the second end plate extends from the bottom of first end plate and is perpendicular to second end plate, and the reinforcing rib is connected with first end plate and second end plate, and is equipped with the glue slot of reducing on the second end plate, and the glue slot of reducing is set up in the edge of second end plate away from first end plate, and the glue slot of reducing is slotted, and the insulating layer makes the good insulation of iron core, and through setting reinforcing rib, the structural strength of insulating end is strengthened, and through setting the glue slot of reducing, the density of insulating material filling is improved, and the quality of iron core is improved.

Description

Technical Field

[0001] This utility model relates to the field of motor manufacturing, and in particular to 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 assembly to achieve insulation. This process is cumbersome and increases production costs. Although plastic coating has been developed to form an insulation layer, the insulation end structure formed by the insulation layer at the core end has low strength, the insulation material is not densely filled, and air bubbles are easily formed, affecting the core quality. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, one of the objectives of this utility model is to provide an iron core with good insulation performance, high structural strength and dense end insulation material filling.

[0005] One of the objectives of this utility model is achieved through the following technical solution:

[0006] An iron core includes a main body and an insulating layer disposed on the surface of the main body. The insulating layer forms insulating ends at both ends of the outer end of the main body. Each insulating end includes a first end plate, a second end plate, and a reinforcing rib. The second end plate extends from the bottom of the first end plate and is perpendicular to the second end plate. The reinforcing rib is connected to both the first end plate and the second end plate. The second end plate is provided with a glue-reducing groove, which is disposed at the edge of the second end plate away from the first end plate. The glue-reducing groove is a slot.

[0007] Furthermore, the reinforcing rib is a right-angled triangle or a right-angled trapezoid.

[0008] Furthermore, there are multiple reinforcing ribs, which are spaced apart at the insulating end.

[0009] Furthermore, the adhesive-reducing groove is located between the two reinforcing ribs in their extending directions.

[0010] Furthermore, the end of the adhesive-reducing groove and the end of the reinforcing rib are located on the same straight line.

[0011] Furthermore, the number of adhesive-reducing grooves is one less than the number of reinforcing ribs, and one adhesive-reducing groove is provided between every two reinforcing ribs.

[0012] Furthermore, the adhesive-reducing groove is rectangular.

[0013] Furthermore, 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 first insulating portion includes a second insulating surface that extends along the length direction of the iron core. The second insulating surface is provided with a plurality of positioning grooves to prevent the wire from slipping during winding.

[0014] Furthermore, the thickness of the insulating layer is 0.15mm-0.2mm.

[0015] Furthermore, the length of the iron core is 80mm-90mm.

[0016] Compared with the prior art, the insulation layer of the iron core of this utility model forms insulation ends at both ends of the outer end of the main body. The insulation end includes a first end plate, a second end plate, and a reinforcing rib. The second end plate extends from the bottom of the first end plate and is perpendicular to the second end plate. The reinforcing rib is connected to both the first end plate and the second end plate. The second end plate is provided with a glue-reducing groove, which is located on the edge of the second end plate away from the first end plate. The glue-reducing groove is an open groove. The insulation layer makes the iron core have good insulation properties. By setting the reinforcing rib, the structural strength of the insulation end is enhanced. By setting the glue-reducing groove, the density of the insulation material filling is improved, and the quality of the iron core is improved. Attached Figure Description

[0017] Figure 1 This is a perspective view of the iron core of this utility model;

[0018] Figure 2 for Figure 1 An exploded view of the iron core;

[0019] Figure 3 for Figure 1 A three-dimensional view of the partial structure of the insulation layer of the iron core;

[0020] Figure 4 for Figure 1 A three-dimensional sectional view of the iron core.

[0021] In the figure: 10, main body; 11, connecting part; 12, outer end; 120, insertion groove; 121, insertion strip; 122, outer wall; 123, recess; 13, inner end; 130, inner wall; 131, side wall; 14, groove; 20, insulating layer; 21, first insulating part; 210, first insulating surface; 211, second insulating surface; 212, positioning groove; 22, second insulating part; 23, third insulating part; 24, insulating end; 240, first end plate; 241, second end plate; 242, reinforcing rib; 243, adhesive reduction groove; 25, receiving part; 26, winding groove. Detailed Implementation

[0022] 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.

[0023] 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.

[0024] 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.

[0025] Please see Figures 1 to 4 The iron core of this invention is used to form a stator. The iron core includes a main body 10 and an insulating layer 20.

[0026] The main body 10 is made of conductive material and is T-shaped. The main body 10 includes an outer end portion 12, a connecting portion 11, and an inner end portion 13. The two ends of the connecting portion 11 are fixedly connected to the outer end portion 12 and the inner end portion 13, respectively. The width of the outer end portion 12 is greater than the width of the connecting portion 11, and the width of the inner end portion 13 is greater than the width of the connecting portion 11. The main body 10 is symmetrical about its centerline. A groove 14 is formed between the outer end portion 12, the connecting portion 11, and the inner end portion 13, and the groove 14 is located on opposite sides of the main body 10.

[0027] Specifically, the outer end portion 12 has insertion slots 120 and insertion strips 121 on both sides. The insertion slots 120 are used to insert into the insertion strips 121 of adjacent iron cores, connecting adjacent iron cores. The outer end portion 12 has an outer wall 122 on the side away from the connecting part 11. The outer wall 122 is arc-shaped, and the outer walls 122 of multiple iron cores form the outer circle of the stator. The edge of the outer wall 122 has a recess 123 corresponding to the insertion slots 120 and insertion strips 121. The recesses 123 of two adjacent iron cores form a weld bead. The weld bead is straight and extends along the axial direction of the stator, used for welding and fixing multiple iron cores after connection. The outer end portion 12 has a bottom wall on the side facing the inner end portion 13. The cross-section of the bottom wall is straight.

[0028] The inner end portion 13 is provided with a side wall 131 and an inner wall 130. There are two side walls 131, which are inclined and arranged in a figure-eight shape. The inner wall 130 is located on the side of the inner end portion 13 away from the outer end portion 12. The inner wall 130 is an arc surface, and the inner walls 130 of multiple iron cores form the inner circle of the stator.

[0029] An insulating layer 20 covers the surface of the main body 10, thus insulating the main body 10. In this embodiment, the insulating layer 20 is made of plastic, and its thickness is 0.15mm-0.2mm. Preferably, the thickness of the insulating layer 20 is 0.15mm. The insulating layer 20 includes a first insulating portion 21, a second insulating portion 22, a third insulating portion 23, and an insulating end 24.

[0030] A first insulating portion 21 covers the surface of the connecting portion 11, and the first insulating portion 21 has a rectangular hollow structure forming a receiving portion 25. The first insulating portion 21 includes two first insulating surfaces 210 and two second insulating surfaces 211. The first insulating surfaces 210 extend along the width direction of the iron core, and the two first insulating surfaces 210 are parallel to each other and located at both ends of the iron core. The second insulating surfaces 211 extend along the length direction of the iron core, and the two second insulating surfaces 211 are parallel to each other and located on both sides of the iron core. A positioning groove 212 is provided on the second insulating surface 211. Since the two first insulating surfaces 210 and the two second insulating surfaces 211 can form a winding groove 26, the positioning groove 212 is located on the wall of the winding groove 26. The positioning groove 212 prevents slippage when the wire is wound. The positioning groove 212 extends along the length direction of the iron core, and there are multiple positioning grooves 212, which extend from the outer end 12 to the inner end 13.

[0031] The second insulating portion 22 covers the bottom wall, and the third insulating portion 23 covers the side wall 131. The first insulating portion 21, the second insulating portion 22, and the third insulating portion 23 form a winding groove 26. There are two insulating ends 24, which are fixed to both ends of the second insulating portion 22. Each insulating end 24 includes a first end plate 240, a second end plate 241, and a reinforcing rib 242. The first end plate 240 extends from the top of the first insulating surface 210 and upwards. The second end plate 241 extends from the bottom of the first end plate 240 and is perpendicular to the first end plate 240. The reinforcing rib 242 is connected to the first end plate 240 and the second end plate 241 to strengthen the structural strength of the insulating end 24. Specifically, the reinforcing rib 242 is a right-angled triangle or a right-angled trapezoid. There are multiple reinforcing ribs 242, which are spaced apart and evenly distributed. The second end plate 241 is provided with a glue-reducing groove 243, which is located at the edge of the second end plate 241 and is a slot. Each glue-reducing groove 243 is located between two reinforcing ribs 242 on the same straight line. Specifically, the number of glue-reducing grooves 243 is one less than the number of reinforcing ribs 242, and a glue-reducing groove 243 is provided at a corresponding position between two reinforcing ribs 242. The glue-reducing groove 243 is rectangular, and the end of the glue-reducing groove 243 is on the same straight line as the end of the reinforcing rib 242.

[0032] The stator is composed of multiple iron cores. The insertion slots 120 of two adjacent iron cores are inserted and fixed with the insertion strips 121. At this time, the recesses 123 of two adjacent iron cores form weld beads for welding adjacent iron cores. The overall length of the iron core is 80-90mm, which is suitable for linear motors and wire control technology.

[0033] The insulation layer 20 of the iron core of this utility model has a thickness of 0.08mm-0.2mm. Through the structural design of the insulation layer 20, the iron core exhibits good insulation performance. The thin insulation layer 20 results in a small iron core volume, which is beneficial for stator miniaturization and weight reduction. The insulation end 24 is reinforced with reinforcing ribs 242 to enhance its structural strength, and the adhesive-reducing grooves 243 improve the density of the insulation material filling, thereby improving the quality of the iron core.

[0034] 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 core, comprising a main body and an insulating layer disposed on the surface of the main body, wherein the insulating layer forms insulating ends at both ends of the outer end portion of the main body, characterized in that: The insulating end includes a first end plate, a second end plate, and a reinforcing rib. The second end plate extends from the bottom of the first end plate and is perpendicular to the second end plate. The reinforcing rib is connected to both the first end plate and the second end plate. The second end plate is provided with a glue-reducing groove, which is located on the edge of the second end plate away from the first end plate. The glue-reducing groove is a slot.

2. The iron core according to claim 1, characterized in that: The reinforcing rib is a right triangle or a right trapezoid.

3. The iron core according to claim 1, characterized in that: The number of reinforcing ribs is multiple, and the multiple reinforcing ribs are distributed at intervals on the insulating end.

4. The iron core according to claim 1, characterized in that: The adhesive-reducing groove is located between the two reinforcing ribs in their extension directions.

5. The iron core according to claim 4, characterized in that: The end of the adhesive reduction groove and the end of the reinforcing rib are on the same straight line.

6. The iron core according to claim 4, characterized in that: The number of adhesive-reducing grooves is one less than the number of reinforcing ribs, and one adhesive-reducing groove is provided between every two reinforcing ribs.

7. The iron core according to claim 1, characterized in that: The adhesive reduction groove is rectangular.

8. The iron core according to claim 1, characterized in that: 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 first insulating portion includes a second insulating surface that extends along the length of the iron core. The second insulating surface is provided with multiple positioning grooves to prevent the wire from slipping during winding.

9. The iron core according to claim 1, characterized in that: The thickness of the insulating layer is 0.15mm-0.2mm.

10. The iron core according to claim 1, characterized in that: The length of the iron core is 80mm-90mm.

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