Silicon steel sheet and magnetic circuit component

Abstract

The utility model discloses a silicon steel sheet and a magnetic circuit component, and the silicon steel sheet comprises a steel sheet body. A stamping structure is formed on the steel sheet body; the stamping structures are used for connecting and fixing the adjacent and stacked steel sheet bodies; the stamping structure comprises a groove, a convex hull and an extrusion convex part; wherein the stamping structure is formed by secondary stamping; after the first stamping, the groove is formed in the front surface of the steel sheet body, and the convex hull is formed on the back surface of the steel sheet body; after secondary stamping, the edge of the inner side of the groove is deformed to form the extrusion convex part; and when the adjacent steel sheet bodies are mounted in an overlapped manner, the convex hulls are accommodated in the grooves, and the convex hulls are in interference fit with the extrusion convex parts. According to the technical scheme, the stacking installation speed of the silicon steel sheets is increased.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of silicon steel sheet especially relates to a silicon steel sheet and magnetic circuit component. BACKGROUND

[0002] Silicon steel sheet is a kind of soft magnetic material with iron-silicon alloy as main component, it has high magnetic permeability and excellent electromagnetic performance, is widely used in the core structure of motor, transformer, inductor and other magnetic circuit components.Silicon steel sheet manufacturing process is usually realized by cold rolling, annealing and surface insulation treatment, and closed magnetic circuit is formed by lamination combination to reduce eddy current loss.The lamination fixation of traditional silicon steel sheet depends on welding or adhesive process, but these methods are easy to introduce additional loss and process complexity, difficult to meet the high-precision, high-reliability magnetic circuit assembly demand. SUMMARY

[0003] The utility model discloses a kind of silicon steel sheet and magnetic circuit component, to improve the reliability of silicon steel sheet stacking installation speed and stacking installation.

[0004] To achieve this purpose, the utility model adopts the following technical scheme:

[0005] A silicon steel sheet, comprising a steel sheet body;The steel sheet body is formed with a stamping structure;The stamping structure is used to connect and fix adjacent and stacked steel sheet bodies;The stamping structure includes a groove, a convex bundle and an extrusion convex part;

[0006] Wherein, the stamping structure is formed by secondary stamping;After first stamping, the front surface of the steel sheet body forms the groove, and the back surface of the steel sheet body forms the convex bundle;After secondary stamping, the inside edge of the groove is deformed to form the extrusion convex part;When adjacent steel sheet bodies are overlapped and installed, the convex bundle is accommodated in the groove, and the convex bundle is interference fit with the extrusion convex part.

[0007] In an embodiment, the groove is an inverted trapezoidal groove.

[0008] In an embodiment, the steel sheet body includes an E-shaped sheet, and the E-shaped sheet is formed with at least two stamping structures.

[0009] In an embodiment, the length of the middle column of the E-shaped sheet is slightly smaller than the length of the side column of the E-shaped sheet.

[0010] In an embodiment, the steel sheet body includes an I-shaped sheet, and the I-shaped sheet is formed with at least two stamping structures.

[0011] The utility model also proposes a kind of magnetic circuit component, comprising winding and lamination group;The lamination group includes a plurality of silicon steel sheets as claimed in any one of the above;

[0012] The steel sheet body comprises E-shaped sheets and I-shaped sheets; the stamping structure is formed on the E-shaped sheets and the I-shaped sheets;

[0013] A plurality of adjacent E-shaped sheets are fixed by the stamping structure to form E-shaped laminated sheets with a preset thickness; a plurality of adjacent I-shaped sheets are fixed by the stamping structure to form I-shaped laminated sheets with a preset thickness;

[0014] The winding is arranged on the middle column of the E-shaped laminated sheets, and the E-shaped laminated sheets are welded with the I-shaped laminated sheets.

[0015] In an embodiment, a first notch is formed outside the side column of the E-shaped sheet, and a second notch is formed at the end of the I-shaped sheet;

[0016] When the E-shaped laminated sheets are welded with the I-shaped laminated sheets, the first notch and the second notch are used to guide and accommodate welding materials.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] The recess, the convex and the extrusion convex part formed by the secondary stamping forming effectively solve the problems of low connection strength, poor positioning accuracy and the need for auxiliary processes in the background art, improve the stacking and mounting speed of the silicon steel sheet, and improve the reliability of the stacking and mounting. Specifically, after the first stamping, the recess is formed on the front surface of the steel sheet body, and the convex is formed on the back surface, which provides basic positioning for the laminated sheet cooperation; the second stamping causes the inner edge of the recess to deform to form an extrusion convex part, which improves the mechanical interlocking strength through the interference fit between the extrusion convex part and the convex of the adjacent steel sheet body, and avoids the loosening of the stacked and mounted silicon steel sheet. At the same time, the self-alignment characteristics of the recess and the convex ensure that the air gap between the laminated sheets is uniform, without the need for additional welding or bonding processes, which simplifies the production process, preserves the integrity of the material surface insulation coating, realizes high-stability stacking and connection, improves the positioning progress of the stacking and connection, and optimizes the magnetic circuit symmetry of the stacking structure. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0020] The structure, proportion, size and the like shown in the drawings of the specification are only used to cooperate with the content disclosed in the specification, to be understood and read by those skilled in the art, and do not have technical substantive significance, and any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the present application, should still fall within the scope of the technical content disclosed by the present application.

[0021] Figure 1 Structure diagram of a first embodiment of the silicon steel sheet of the present application;

[0022] Figure 2 Structure diagram of another embodiment of the silicon steel sheet of the present application; Figure 1 Structure diagram of another embodiment of the silicon steel sheet of the present application;

[0023] Figure 3 Structure diagram of another embodiment of the silicon steel sheet of the present application; Structure diagram of another embodiment of the silicon steel sheet of the present application;

[0024] Structure diagram of another embodiment of the silicon steel sheet of the present application; Figure 4 Structure diagram of another embodiment of the silicon steel sheet of the present application; Figure 3 Structure diagram of another embodiment of the silicon steel sheet of the present application; Structure diagram of another embodiment of the silicon steel sheet of the present application;

[0025] Structure diagram of another embodiment of the silicon steel sheet of the present application; Figure 5 Structure diagram of another embodiment of the silicon steel sheet of the present application; Structure diagram of another embodiment of the silicon steel sheet of the present application;

[0026] Structure diagram of another embodiment of the silicon steel sheet of the present application; Figure 6 Structure diagram of another embodiment of the silicon steel sheet of the present application; Figure 5 Structure diagram of another embodiment of the silicon steel sheet of the present application; Structure diagram of another embodiment of the silicon steel sheet of the present application;

[0027] Structure diagram of another embodiment of the silicon steel sheet of the present application; Figure 7 Structure diagram of another embodiment of the silicon steel sheet of the present application; Structure diagram of another embodiment of the silicon steel sheet of the present application;

[0028] Structure diagram of another embodiment of the silicon steel sheet of the present application; Figure 8 Structure diagram of another embodiment of the silicon steel sheet of the present application; Figure 7 Structure diagram of another embodiment of the silicon steel sheet of the present application; Structure diagram of another embodiment of the silicon steel sheet of the present application;

[0029] Structure diagram of another embodiment of the silicon steel sheet of the present application; Figure 9 Structure diagram of another embodiment of the silicon steel sheet of the present application; Structure diagram of another embodiment of the silicon steel sheet of the present application;

[0030] Structure diagram of another embodiment of the silicon steel sheet of the present application; Figure 10 Structure diagram of another embodiment of the silicon steel sheet of the present application; Figure 9 Structure diagram of another embodiment of the silicon steel sheet of the present application; Structure diagram of another embodiment of the silicon steel sheet of the present application;

[0031] Structure diagram of another embodiment of the silicon steel sheet of the present application; Figure 11 Structure diagram of another embodiment of the silicon steel sheet of the present application; Structure diagram of another embodiment of the silicon steel sheet of the present application;

[0032] Structure diagram of another embodiment of the silicon steel sheet of the present application; Structure diagram of another embodiment of the silicon steel sheet of the present application;

[0033] Structure diagram of another embodiment of the silicon steel sheet of the present application; Structure diagram of another embodiment of the silicon steel sheet of the present application;

[0034] 200, magnetic component; 210, lamination stack; 211, E-lamination; 212, I-lamination; 11a, first notch; 12a, second notch;

[0035] 300, first stamping die; 400, second stamping die. DETAILED DESCRIPTION

[0036] In order to make the technical purposes, features and advantages of the present application more obvious and easy to understand, the technical solutions in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application. Obviously, the following described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0037] In the description of the present application, it should be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there can be a component disposed therebetween.

[0038] The technical solutions of the present application will be further described below in combination with the drawings and through specific embodiments.

[0039] The present application provides a silicon steel sheet 100.

[0040] Please refer to Figures 1 to 11 In an embodiment of the present application, the silicon steel sheet 100 comprises a steel sheet body 110; the steel sheet body 110 is formed with a stamping structure 120; the stamping structure 120 is used to connect and fix adjacent and stacked steel sheet bodies 110; the stamping structure 120 comprises a groove 121, a convex 122 and an extrusion convex part 123;

[0041] The stamping structure 120 is formed by secondary stamping; after the first stamping, the front surface of the steel sheet body 110 forms the groove 121, and the back surface of the steel sheet body 110 forms the convex 122; after the second stamping, the inner side edge of the groove 121 is deformed to form the extrusion convex part 123; when the adjacent steel sheet bodies 110 are overlapped and installed, the convex 122 is accommodated in the groove 121, and the convex 122 is interference-fitted with the extrusion convex part 123.

[0042] It can be understood that the technical scheme of the utility model effectively solves the problems of low connection strength, poor positioning accuracy and the need for auxiliary processes in the background art through the recess 121, the convex 122 and the extrusion convex part 123 formed by secondary stamping, improves the stacking and mounting speed of the silicon steel sheet 100 and the reliability of stacking and mounting. Specifically, after the first stamping, the recess 121 is formed on the front surface of the steel sheet body 110 and the convex 122 is formed on the back surface, providing basic positioning for the lamination cooperation; the second stamping causes the inner side edge of the recess 121 to deform to form the extrusion convex part 123, which improves the mechanical interlocking strength through interference fit with the convex 122 of the adjacent steel sheet body 110, avoiding the loosening of the stacked silicon steel sheet 100. At the same time, the self-alignment characteristics of the recess 121 and the convex 122 ensure uniform air gap between the laminations, without the need for additional welding or bonding processes, which simplifies the production process, preserves the integrity of the material surface insulation coating, realizes high-stability stacking connection, improves the positioning progress of the stacking connection and optimizes the magnetic circuit symmetry of the stacking structure.

[0043] Optionally, the material of the steel sheet body 110 is silicon steel, and the thickness ranges from 0.3㎜ to 0.5㎜. The steel sheet body 110 is formed with an insulation layer.

[0044] Optionally, the material of the insulation layer is a phosphate coating or a ceramic coating.

[0045] Optionally, the stamping structure 120 is a mechanical interlocking structure formed by die stamping, used to connect the adjacent steel sheet bodies 110 stacked.

[0046] Exemplarily, please refer to Figure 7 and Figure 8 During the first stamping process, a first stamping die 300 is used to form the recess 121 on the front surface of the steel sheet body and the convex 122 on the back surface of the steel sheet body 110, and the convex 122 can be fitted with the recess 121 of the adjacent steel sheet body 110.

[0047] Further, the cross-sectional area of the punch of the first stamping die 300 decreases in sequence, so that the convex 122 can be accommodated in the recess 121 of the adjacent steel sheet body 110.

[0048] Optionally, the shape of the concave die of the first stamping die 300 is adapted to the shape of the punch.

[0049] Optionally, the stamping head of the first stamping die 300 is in the shape of a circular truncated cone, so that the recess 121 is a circular truncated inverted cone groove.

[0050] Optionally, the punch head of the first stamping die 300 is in the shape of an elliptical table, so that the groove 121 is a reverse elliptical table groove.

[0051] Optionally, the punch head of the first stamping die 300 is in the shape of a trapezoidal table, so that the groove 121 is a reverse trapezoidal table groove.

[0052] In the embodiment, preferably, to improve the connection strength of the stamping structure 120, the groove 121 is a reverse trapezoidal table groove.

[0053] Please continue to refer to Figure 9 and Figure 10 In the second stamping process, a second stamping die 400 is used to realize the extrusion of the edges of the groove 121 on the front surface of the steel sheet body 110, so as to form the extrusion convex part 123, which is used to realize the mechanical locking between adjacent steel sheet bodies 110.

[0054] Optionally, the punch head of the second stamping die 400 is in the shape of a spherical surface, so that both inner sides of the groove 121 form the extrusion convex part 123.

[0055] Optionally, the concave die of the second stamping die 400 is matched with the shape of the convex bump 122.

[0056] Optionally, as shown in the drawings, the concave die of the second stamping die 400 is matched with the shape of the convex bump 122 and the punch head thereof. Figure 10

[0057] Optionally, the concave die of the second stamping die 400 is shared with the concave die of the first stamping die 300.

[0058] It should be further pointed out that the steel sheet body 110 of the utility model can include one or more of EI type sheets, ring type sheets, C type sheets, UI type sheets, F type sheets, and fan ring type sheets.

[0059] Please refer to Figure 1 , Figure 2 , Figure 5 and Figure 6 In a specific embodiment of the utility model, the steel sheet body 110 includes an E type sheet, and the E type sheet is formed with at least two stamping structures 120.

[0060] Preferably, to improve the mechanical connection strength of the E type sheet stack, the E type sheet stack has five stamping structures 120. Among them, the yoke part of the E type sheet has two stamping structures 120, and the two side columns and the middle column of the E type sheet each have one stamping structure 120.

[0061] ​Optionally, when the E-shaped sheet has two stamping structures 120, the two stamping structures 120 are arranged on the two side columns of the E-shaped sheet respectively.

[0062] Further, the middle column length of the E-shaped sheet is slightly smaller than the side column length of the E-shaped sheet.

[0063] Referring to Figure 3 , Figure 4 , Figure 5 and Figure 6 , the steel sheet body 110 includes an I-shaped sheet formed with at least two stamping structures 120.

[0064] Preferably, the I-shaped sheet has and only has two stamping structures 120.

[0065] Referring to Figure 5 , Figure 6 and Figure 11 , the utility model embodiment further provides a magnetic circuit component 200. The magnetic circuit component 200 includes a winding (not shown in the figure) and a laminated core 210;The laminated core 210 includes a plurality of silicon steel sheets 100 as described above;

[0066] The steel sheet body 110 includes an E-shaped sheet and an I-shaped sheet;The E-shaped sheet and the I-shaped sheet are formed with the stamping structure 120;

[0067] A plurality of adjacent E-shaped sheets are fixed by the stamping structure 120 to form an E-shaped laminated sheet 211 with a preset thickness;A plurality of adjacent I-shaped sheets are fixed by the stamping structure 120 to form an I-shaped laminated sheet 212 with a preset thickness;

[0068] The winding is wound around the middle column of the E-shaped laminated sheet 211, and the E-shaped laminated sheet 211 is welded with the I-shaped laminated sheet 212.

[0069] It can be understood that the magnetic circuit component 200 of the utility model includes all the technical features of the silicon steel sheet 100, and the beneficial effects of the silicon steel sheet 100 can cover the beneficial effects of the magnetic circuit component 200, so the beneficial effects of the magnetic circuit component 200 are not repeated here.

[0070] It should be further pointed out that the magnetic circuit component 200 can be an inductor, a reactor, a transformer, a motor accessory, etc.

[0071] Further, the middle column length of the E-shaped sheet is slightly smaller than the side column length of the E-shaped sheet.

[0072] Further, a first gap 11a is formed outside the side column of the E-shaped sheet, and a second gap 12a is formed at the end of the I-shaped sheet; when the E-shaped sheet 211 and the I-shaped sheet 212 are welded, the first gap 11a and the second gap 12a are used to guide and accommodate the welding material.

[0073] It can be understood that the cooperation of the first gap 11a and the second gap 12a can accurately fill the welding material, avoid the problems of virtual welding or waste of welding material caused by alignment deviation in traditional welding, and improve the appearance of the welding of the sheet set 210.

[0074] The above-described embodiments are only used to illustrate the technical solutions of the present application, rather than limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A silicon steel sheet, characterized by, The steel sheet body is formed with a punching structure for connecting and fixing adjacent and stacked steel sheet bodies, the punching structure comprising a groove, a convex and an extruded convex part; The punching structure is formed by secondary punching, after the first punching, the front surface of the steel sheet body forms the groove, and the back surface of the steel sheet body forms the convex, after the second punching, the inner side edge of the groove is deformed to form the extruded convex part, when the adjacent steel sheet bodies are overlapped and installed, the convex is accommodated in the groove, and the convex and the extruded convex part are interference fit.

2. A sheet of silicon steel according to claim 1, characterised in that The groove is an inverted trapezoidal groove.

3. A sheet of silicon steel according to claim 1 or 2, characterised in that The steel sheet body comprises an E-shaped sheet formed with at least two punching structures.

4. A sheet of silicon steel according to claim 3, characterised in that The middle column length of the E-shaped sheet is slightly smaller than the side column length of the E-shaped sheet.

5. A sheet of silicon steel according to claim 1 or 2, characterised in that The steel sheet body comprises an I-shaped sheet formed with at least two punching structures.

6. A magnetic circuit component, characterized by The winding and the lamination stack are provided, the lamination stack comprises a plurality of silicon steel sheets as claimed in claim 1 or 2; The steel sheet body comprises an E-shaped sheet and an I-shaped sheet, and the E-shaped sheet and the I-shaped sheet are formed with the punching structure; A plurality of adjacent E-shaped sheets are fixed by the punching structure to form E-shaped laminations with a preset thickness, and a plurality of adjacent I-shaped sheets are fixed by the punching structure to form I-shaped laminations with a preset thickness; The winding is wound around the middle column of the E-shaped laminations, and the E-shaped laminations are welded with the I-shaped laminations.

7. The magnetic circuit component of claim 6, wherein The side column of the E-shaped sheet is formed with a first notch, and the end of the I-shaped sheet is formed with a second notch; When the E-shaped laminations and the I-shaped laminations are welded, the first notch and the second notch are used to guide and accommodate welding materials.

Images