Riveting-point-free iron core and motor with same

Abstract

The utility model discloses a riveting-point-free iron core and a motor with the same, the riveting-point-free iron core comprises a plurality of iron core units, the plurality of iron core units are sequentially arranged along the circumferential direction of the iron core, and each iron core unit comprises a connecting part and a plurality of silicon steel sheets; the plurality of silicon steel sheets are sequentially arranged in the axis direction of the iron core, the upper surfaces and the lower surfaces of the silicon steel sheets are flat surfaces, the connecting parts are arranged on the surfaces of the iron core units, the connecting parts are tightly attached to the plurality of silicon steel sheets so as to fix the plurality of silicon steel sheets into a whole, and the outer surfaces of the connecting parts are used for winding; every two adjacent iron core units are clamped with each other; the iron core has the advantages that the silicon steel sheets are fixed by the connecting parts, iron loss is reduced, and iron core performance is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of iron core manufacturing, and in particular relates to an iron core without rivet points and a motor having the same. Background Art

[0002] The iron core is the central part of the motor, which is composed of multiple stamped silicon steel sheets. The lamination process of multiple silicon steel sheets usually uses the process of stamping the silicon steel sheets, punching buckle points on the silicon steel sheets, and then stacking the multiple silicon steel sheets and pressing them together to connect the multiple silicon steel sheets through the buckle points. However, the stamping of the buckle points will damage the silicon steel sheets, causing iron loss and leading to a decrease in motor performance. In addition, the buckle point lamination process has certain requirements on the thickness of the silicon steel sheets, which also affects the performance of the motor. Therefore, in order to improve the performance of the motor, a rivet-free iron core and a motor having the same are proposed. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art.

[0004] To this end, the utility model provides a rivet-free iron core and a motor having the same. The rivet-free iron core has the advantages of using a connecting part to fix silicon steel sheets, reducing iron loss and improving iron core performance.

[0005] According to the rivet-free core of the embodiment of the utility model, it includes: a plurality of core sub-units, the plurality of core sub-units are arranged in sequence along the circumferential direction of the core, the core sub-units include: a connecting part and a plurality of silicon steel sheets; the plurality of silicon steel sheets are arranged in sequence along the axial direction of the core, the upper surface and the lower surface of the silicon steel sheets are both flat surfaces, the connecting part is arranged on the surface of the core sub-unit, the connecting part is tightly fitted with the plurality of silicon steel sheets to fix the plurality of silicon steel sheets into a whole, and the outer surface of the connecting part is used for winding; two adjacent core sub-units are clamped to each other.

[0006] According to an embodiment of the utility model, a first splicing portion is provided on one side of the core subunit, and a second splicing portion is provided on the other side of the core subunit, and the first splicing portion of one core subunit is clamped with the second splicing portion of an adjacent core subunit.

[0007] According to an embodiment of the present invention, the first splicing portion is a protrusion, and the second splicing portion is a groove, and the protrusion matches the groove.

[0008] According to an embodiment of the present invention, the connecting portion is an injection molded part.

[0009] According to one embodiment of the utility model, the connecting part includes an upper cover plate, a lower cover plate and two connecting walls, the two connecting walls are arranged opposite to each other, the upper cover plate connects the upper ends of the two connecting walls, the lower cover plate connects the lower ends of the two connecting walls, the upper cover plate, the lower cover plate and the two connecting walls are connected to form a frame, and the plurality of silicon steel sheets are located in the frame.

[0010] According to one embodiment of the utility model, the silicon steel sheet consists of a first arc-shaped sheet, a second arc-shaped sheet and a connecting sheet, the first arc-shaped sheet and the second arc-shaped sheet are arranged at intervals, and the two ends of the connecting sheet are respectively connected to the first arc-shaped sheet and the second arc-shaped sheet to form an I-shaped structure.

[0011] According to an embodiment of the present invention, the first splicing portion is located at one end of the second arc-shaped piece, and the second splicing portion is located at the other end of the second arc-shaped piece.

[0012] According to an embodiment of the utility model, the connecting wall is composed of a first side wall, a second side wall and a third side wall, the first side wall is attached to the first arc-shaped piece, the second side wall is attached to the connecting piece, and the third side wall is attached to the second arc-shaped piece.

[0013] According to an embodiment of the present invention, the thickness of the connecting wall is 0.4 mm-0.6 mm.

[0014] A motor comprises the rivet-free iron core described in any one of the above items.

[0015] The beneficial effect of the utility model is that the utility model adopts the method of arranging the connection part on the outer surface of multiple silicon steel sheets, thereby realizing the fixing effect of multiple silicon steel sheets, avoiding the use of buckle points to stack the silicon steel sheets, reducing the damage to the surface of the silicon steel sheets, thereby reducing the iron loss, and using the connection part to fix the silicon steel sheets, avoiding the thickness requirement of the silicon steel sheets, further reducing the iron loss, and improving the performance of the iron core; at the same time, the outer surface of the connection part is used for winding, so the connection part also realizes the insulation effect, reducing the production steps of the iron core, and reducing the production cost;

[0016] The iron core composed of a plurality of iron core sub-units is convenient for winding each iron core sub-unit first and then assembling, which reduces the difficulty of winding and improves production efficiency.

[0017] Other features and advantages of the present invention will be set forth in the following description, and in part will become apparent from the description, or may be understood by implementing the present invention.

[0018] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments of the present invention, in which:

[0020] Figure 1 This is a schematic diagram of the overall structure of the utility model's rivet-free iron core;

[0021] Figure 2 This is a schematic diagram of the structure of the iron core subunit of the utility model;

[0022] Figure 3 It is a partial cross-sectional schematic diagram of the iron core subunit structure of the utility model;

[0023] Figure 4 It is a bottom view schematic diagram of the iron core subunit structure of the utility model;

[0024] Figure 5 It is a schematic diagram of the dismantling connection part of the integral structure of the iron core without rivet points of the utility model;

[0025] Reference numerals:

[0026] 1. Iron core subunit; 11. Silicon steel sheet; 111. First arc-shaped sheet; 112. Second arc-shaped sheet; 113. Connecting sheet; 12. Connecting portion; 121. Upper cover plate; 122. Lower cover plate; 123. Connecting wall; 1231. First side wall; 1232. Second side wall; 1233. Third side wall; 13. First splicing portion; 14. Second splicing portion. DETAILED DESCRIPTION

[0027] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0028] In the description of the present utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] The rivet-point-free iron core and the motor having the same according to the embodiment of the utility model will be described in detail below with reference to the accompanying drawings.

[0031] like Figure 1-Figure 5 As shown, the rivet-free core according to the embodiment of the utility model includes: a plurality of core sub-units 1, the plurality of core sub-units 1 are arranged in sequence along the circumferential direction of the core, the core sub-unit 1 includes: a connecting portion 12 and a plurality of silicon steel sheets 11; the plurality of silicon steel sheets 11 are arranged in sequence along the axial direction of the core, the upper surface and the lower surface of the silicon steel sheet 11 are both flat surfaces, the connecting portion 12 is provided on the surface of the core sub-unit 1, the connecting portion 12 is tightly fitted with the plurality of silicon steel sheets 11 to fix the plurality of silicon steel sheets 11 into a whole, and the outer surface of the connecting portion 12 is used for winding; two adjacent core sub-units 1 are clamped to each other.

[0032] In this embodiment, by arranging the connection part 12 on the outer surface of multiple silicon steel sheets 11, the fixing effect of multiple silicon steel sheets 11 is achieved, the use of buckle points to stack the silicon steel sheets 11 is avoided, the damage to the surface of the silicon steel sheets 11 is reduced, and the iron loss is reduced. In addition, the silicon steel sheets 11 are fixed by the connection part 12, which avoids the thickness requirement of the silicon steel sheets 11. That is to say, when the silicon steel sheets 11 are fixed by the connection part 12, thinner silicon steel sheets 11 can be selected, which further reduces the iron loss and improves the performance of the iron core; at the same time, the outer surface of the connection part 12 is used for winding, so the connection part 12 also achieves the role of insulation, reduces the production steps of the iron core, and reduces the production cost. In addition, the iron core composed of multiple iron core sub-units 1 is convenient for winding each iron core sub-unit 1 before assembling, which reduces the difficulty of winding and improves production efficiency.

[0033] A first splicing portion 13 is provided on one side of the core subunit 1 , and a second splicing portion 14 is provided on the other side of the core subunit 1 . The first splicing portion 13 of one core subunit 1 is clamped with the second splicing portion 14 of an adjacent core subunit 1 .

[0034] In this embodiment, two adjacent core sub-units 1 are connected by the first splicing portion 13 and the second splicing portion 14, so that the core formed by connecting the multiple core sub-units 1 is more stable.

[0035] The first splicing portion 13 is a protrusion, and the second splicing portion 14 is a groove, and the protrusion matches the groove.

[0036] Arc chamfers are formed at the connection points between the first splicing portion 13 , the second splicing portion 14 and the core subunit 1 .

[0037] In this embodiment, the first splicing part 13 is semicircular, so that the first splicing part 13 can be inserted into the second splicing part 14 more smoothly. The arc chamfer avoids damage to the connection between the first splicing part 13, the second splicing part 14 and the core sub-unit 1 when multiple core sub-units 1 are connected or separated, and at the same time avoids scratching the first splicing part 13 when the connection is angular.

[0038] The connection part 12 is an injection molded part. After arranging the plurality of silicon steel sheets 11 , the surfaces of the plurality of silicon steel sheets 11 are injection molded by an injection molding process, so that the connection part 12 is an integrally molded structure, and the molded connection part 12 fixes the plurality of silicon steel sheets 11 .

[0039] The connecting portion 12 includes an upper cover plate 121, a lower cover plate 122 and two connecting walls 123. The two connecting walls 123 are arranged opposite to each other. The upper cover plate 121 connects the upper ends of the two connecting walls 123, and the lower cover plate 122 connects the lower ends of the two connecting walls 123. The upper cover plate 121, the lower cover plate 122 and the two connecting walls 123 are connected to form a frame, and multiple silicon steel sheets 11 are located in the frame.

[0040] The silicon steel sheet 11 is composed of a first arc-shaped sheet 111, a second arc-shaped sheet 112 and a connecting sheet 113. The first arc-shaped sheet 111 and the second arc-shaped sheet 112 are arranged at intervals. The two ends of the connecting sheet 113 respectively connect the first arc-shaped sheet 111 and the second arc-shaped sheet 112 to form an I-shaped structure.

[0041] The first splicing portion 13 is located on one side of the second arc-shaped piece 112 , and the second splicing portion 14 is located on the other side of the second arc-shaped piece 112 .

[0042] The connecting wall 123 is composed of a first side wall 1231 , a second side wall 1232 and a third side wall 1233 . The first side wall 1231 is attached to the first arc-shaped piece 111 , the second side wall 1232 is attached to the connecting piece 113 , and the third side wall 1233 is attached to the second arc-shaped piece 112 .

[0043] In this embodiment, multiple silicon steel sheets 11 are tightly fitted to the inner surface of the frame to achieve the fixing effect of the frame on the multiple silicon steel sheets 11, so that the multiple silicon steel sheets 11 form a whole; the first side wall 1231, the second side wall 1232 and the third side wall 1233 form a groove on the side wall of the core sub-unit 1, and through the upper cover plate 121 and the lower cover plate 122, an insulating environment is provided for the winding outside the connecting part 12 to achieve the insulation effect. At the same time, the groove provides space for the winding on the core sub-unit 1, avoiding the mutual squeezing of the windings on adjacent core sub-units 1, so that the multiple core sub-units 1 are connected more firmly.

[0044] The thickness of the connecting wall 123 is 0.4 mm to 0.6 mm, which not only ensures the stability of fixing the multiple silicon steel sheets 11, but also saves the space occupied by the connecting wall 123 to meet the slot full rate of the winding and ensure the performance of the motor.

[0045] A motor comprises any one of the above-mentioned rivet-free iron cores.

[0046] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0047] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A rivet-free core, characterized in that: include: A plurality of iron core sub-units (1), wherein the plurality of iron core sub-units (1) are arranged in sequence along the circumferential direction of the iron core, and the iron core sub-units (1) comprise: A plurality of silicon steel sheets (11), wherein the plurality of silicon steel sheets (11) are arranged in sequence along the axial direction of the iron core, and the upper surface and the lower surface of the silicon steel sheets (11) are both flat surfaces; A connecting portion (12), the connecting portion (12) being arranged on the surface of the core subunit (1), the connecting portion (12) being closely fitted to the plurality of silicon steel sheets (11) so as to fix the plurality of silicon steel sheets (11) into a whole, and the outer surface of the connecting portion (12) being used for winding; Two adjacent iron core sub-units (1) are clamped together.

2. The rivet-free core according to claim 1, characterized in that: A first splicing portion (13) is provided on one side of the core subunit (1), and a second splicing portion (14) is provided on the other side of the core subunit (1); the first splicing portion (13) of one core subunit (1) is snap-connected with the second splicing portion (14) of an adjacent core subunit (1).

3. The rivet-free core according to claim 2, characterized in that: The first splicing portion (13) is a protrusion, and the second splicing portion (14) is a groove, and the protrusion matches the groove.

4. The rivet-free core according to claim 3, characterized in that: The connecting portion (12) is an injection molded part.

5. The rivet-free core according to claim 4, characterized in that: The connecting portion (12) comprises an upper cover plate (121), a lower cover plate (122) and two connecting walls (123); the two connecting walls (123) are arranged opposite to each other; the upper cover plate (121) connects the upper ends of the two connecting walls (123); the lower cover plate (122) connects the lower ends of the two connecting walls (123); the upper cover plate (121), the lower cover plate (122) and the two connecting walls (123) are connected to form a frame; and the plurality of silicon steel sheets (11) are located in the frame.

6. The rivet-free core according to claim 5, characterized in that: The silicon steel sheet (11) is composed of a first arc-shaped sheet (111), a second arc-shaped sheet (112) and a connecting sheet (113); the first arc-shaped sheet (111) and the second arc-shaped sheet (112) are arranged at intervals; two ends of the connecting sheet (113) respectively connect the first arc-shaped sheet (111) and the second arc-shaped sheet (112) to form an I-shaped structure.

7. The rivet-free core according to claim 6, characterized in that: The first splicing portion (13) is located at one end of the second arc-shaped piece (112), and the second splicing portion (14) is located at the other end of the second arc-shaped piece (112).

8. The rivet-free core according to claim 7, characterized in that: The connecting wall (123) is composed of a first side wall (1231), a second side wall (1232) and a third side wall (1233); the first side wall (1231) is attached to the first arc-shaped piece (111); the second side wall (1232) is attached to the connecting piece (113); and the third side wall (1233) is attached to the second arc-shaped piece (112).

9. The rivet-free core according to claim 8, characterized in that: The thickness of the connecting wall (123) is 0.4 mm to 0.6 mm.

10. A motor, characterized in that: It comprises the rivet-point-free iron core as described in any one of claims 1-9.

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