Connecting structure for manufacturing arc-shaped iron core

Abstract

The utility model discloses a connecting structure for manufacturing an arc-shaped iron core. The connecting structure comprises a sheet body and at least two connecting plates, the outer contour of the sheet body is circular or elliptical; the at least two connecting plates are arranged at intervals, at least a first contact surface and a second contact surface are arranged between the connecting plates and the sheet body, at least one riveting point module is formed on each connecting plate, and the riveting point modules on the at least two connecting plates are uniformly distributed in the circumferential direction of the sheet body. And the performance of the motor is improved.

Description

Technical Field

[0001] This utility model belongs to the field of motor manufacturing technology, specifically relating to the manufacturing of silicon steel sheets, and more particularly to a connection structure made of an arc-shaped iron core. Background Technology

[0002] Motor cores are typically made of multiple layers of laminated silicon steel sheets. During the manufacturing process, to ensure a tight fit between the layers, interlocking points are often stamped onto the surface. Adjacent sheets are interlocked through these points, achieving a tight fit. However, this stamping process has drawbacks; it can cause localized damage to the silicon steel sheets, increasing iron losses and negatively impacting the overall performance of the motor. Therefore, to ensure the integrity of the silicon steel sheets and improve motor performance, a connection structure using an arc-shaped core is proposed. Utility Model Content

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

[0004] Therefore, this utility model proposes a connection structure made of an arc-shaped iron core, which has the advantage of avoiding the need for pressing fasteners on the iron core and improving motor performance.

[0005] The connecting structure made of the arc-shaped iron core according to the present utility model includes: a sheet body and at least two connecting plates; the outer contour of the sheet body is circular or elliptical; at least two connecting plates are spaced apart, and the connecting plates and the sheet body have at least a first contact surface and a second contact surface, and at least one rivet module is formed on the connecting plate, and the rivet modules on the at least two connecting plates are evenly distributed in the circumferential direction of the sheet body.

[0006] According to one embodiment of the present invention, the rivet module includes a single fastening point or multiple fastening points.

[0007] According to one embodiment of the present invention, when the number of connecting plates is two, the point a on the first contact surface that is furthest from the second contact surface to the center point of the plate forms a first line segment, and the point b on the second contact surface that is furthest from the first contact surface to the center point of the plate forms a second line segment, and the included angle between the first line segment and the second line segment is between degrees and degrees.

[0008] According to one embodiment of the present invention, the connecting plate and the sheet body further have at least one third contact surface, which is located between the first contact surface and the second contact surface.

[0009] According to one embodiment of the present invention, the first contact surface and the second contact surface are connected as a whole.

[0010] According to one embodiment of the present invention, when the number of connecting plates is three or more, at least one end of each connecting plate has a reinforcing structure formed between it and another adjacent connecting plate.

[0011] According to one embodiment of the present invention, the reinforcing structure is integrally formed or is composed of a first connecting block and a second connecting block connected by an interlocking groove and a protrusion.

[0012] According to one embodiment of the present invention, the groove is formed on the first connecting block, the protrusion is formed on the second connecting block, and the groove and the protrusion can move and disengage in the opposite direction of engagement.

[0013] According to one embodiment of the present invention, at least two of the connecting plates are evenly spaced apart.

[0014] According to one embodiment of the present invention, at least two of the connecting plates have the same shape.

[0015] The beneficial effect of this utility model is that by forming an interval area between each connecting plate, this utility model avoids the phenomenon of incomplete separation caused by two molds simultaneously stamping two adjacent connecting plates, so that the connecting plate and the sheet are completely separated, which facilitates the subsequent separation of the connecting plate and the sheet.

[0016] By using rivet modules on the connecting plate, the fit between the sheets is ensured, while avoiding the formation of rivet modules on the sheets, thus ensuring the integrity of the sheets and improving the performance of the core.

[0017] The use of rivet modules evenly distributed around the sheet ensures the fit between the sheets and avoids localized warping.

[0018] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention.

[0019] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0020] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the following description of the embodiments with accompanying drawings, in which:

[0021] Figure 1 This is a schematic diagram of the structure of the present invention when the sheet body is circular and there are two connecting plates;

[0022] Figure 2 This is a structural diagram of the present invention when the sheet body is circular and there are four connecting plates with a reinforcing structure;

[0023] Figure 3 This is the structural concept of the present invention when the outer contour of the sheet is circular and there are four connecting plates with a reinforcing structure.

[0024] Figure 4 The schematic diagram shows that the sheet body of this utility model is circular, the connecting plates are four in number and the reinforcing structure is an interlocking form, and the connecting groove is a U-shaped structure.

[0025] Figure 5 The schematic diagram shows that the sheet body of this utility model is circular, the connecting plates are four, and the reinforcing structure is an interlocking form. The connecting groove is a C-shaped structure.

[0026] Figure 6 The schematic diagram shows that the sheet body of this utility model is circular, the connecting plates are four in number and the reinforcing structure is an interlocking form, and the connecting groove is a V-shaped structure.

[0027] Figure label:

[0028] 1. Sheet body; 2. Connecting plate; 21. Riveting module; 3. Reinforcing structure; 31. First connecting block; 32. Second connecting block; 4. First contact surface; 5. Second contact surface. Detailed Implementation

[0029] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0030] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] The connection structure of the arc-shaped iron core of this utility model embodiment is described in detail below with reference to the accompanying drawings.

[0033] like Figures 1-6 As shown, the connecting structure made of the arc-shaped iron core according to the embodiment of the present utility model includes: a sheet body 1 and at least two connecting plates 2; the outer contour of the sheet body 1 is circular or elliptical; at least two connecting plates 2 are spaced apart, and the connecting plates 2 and the sheet body 1 have at least a first contact surface 4 and a second contact surface 5. At least one rivet module 21 is formed on the connecting plate 2, and the rivet modules 21 on the at least two connecting plates 2 are evenly distributed in the circumferential direction of the sheet body 1. That is to say, the shape and structure of the at least two connecting plates 2 are not limited, but the rivet modules 21 around the sheet body 1 are evenly distributed to ensure the fit between the sheet body 1 and avoid the phenomenon of local warping.

[0034] In this embodiment, the sheet 1 can be circular or elliptical, or its outer contour can be a circle formed by multiple line segments spaced around the sheet 1, or a similar circular or elliptical outer contour formed by multiple irregular structures spaced around the sheet 1. When stamping the sheet 1 and the connecting plate 2, the adjacent parts between the adjacent connecting plates 2 and the sheet 1 are stamped first to form a gap area between the adjacent connecting plates 2. Then, the contour of the sheet 1 and the rivet module 21 on the connecting plate 2 are stamped. At this time, the sheet 1 and the connecting plate 2 are formed into a silicon steel sheet assembly. Then, multiple silicon steel sheet assemblies are stacked and pressed together to achieve mutual connection through the rivet module 21 on the silicon steel sheet assembly. After the multiple silicon steel sheet assemblies are connected, multiple sheet 1s are fixed by injection molding or bonding. Then, the connecting plate 2 is removed to form the components or the core body that make up the iron core. By first forming the gap area between each connecting plate 2, the phenomenon of incomplete separation caused by two molds simultaneously stamping two adjacent connecting plates 2 is avoided, so that the connecting plate 2 is completely separated from the sheet body 1, which facilitates the subsequent separation of the connecting plate 2 and the sheet body 1. The specific area of ​​the first contact surface 4 and the second contact surface 5 and the distance between the first contact surface 4 and the second contact surface 5 can be set according to the size and thickness of the sheet body 1, so as to ensure that the connecting plate 2 and the sheet body 1 are firmly connected before the fastening is completed. By setting the rivet module 21 on the connecting plate 2, the fit between the sheet body 1 and the sheet body 1 is ensured, while avoiding the formation of the rivet module 21 on the sheet body 1, ensuring the integrity of the sheet body 1 and improving the performance of the iron core.

[0035] Furthermore, multiple silicon steel sheet components can be arranged in an array, in a mirror image, or in a centrally symmetrical arrangement to form a silicon steel sheet assembly module, which facilitates the simultaneous production of multiple sheets 1 on a single strip during stamping, thereby improving production efficiency. The overall outer contour of the silicon steel sheet component can be formed into a circle, rectangle, polygon, or irregular shape according to production needs. Preferably, the overall outer contour of the silicon steel sheet component is rectangular, which can be formed by cutting the steel strip, and the rectangular outer contour facilitates positioning during subsequent stacking.

[0036] The rivet module 21 includes a single rivet point or multiple rivets.

[0037] When there are two connecting plates 2, the point a on the first contact surface 4 that is farthest from the second contact surface 5 forms a first line segment to the center point of the plate 1, and the point b on the second contact surface 5 that is farthest from the first contact surface 4 forms a second line segment to the center point of the plate 1. The included angle between the first line segment and the second line segment is between 120 degrees and 180 degrees.

[0038] In this embodiment, the two connecting plates 2 are arranged opposite each other. By increasing the distance between the first contact surface 4 and the second contact surface 5, the connection between the connecting plate 2 and the sheet 1 is made firm, which avoids the phenomenon of the connecting plate 2 and the sheet 1 falling off before the production is completed, thus ensuring the yield rate.

[0039] The connecting plate 2 and the sheet 1 also have at least one third contact surface, which is located between the first contact surface 4 and the second contact surface 5.

[0040] In this embodiment, if the outer contour of the sheet 1 is a circle formed by multiple line segments spaced apart along the sheet 1, or a similar circle or ellipse formed by multiple irregular structures spaced apart along the sheet 1, the area of ​​the first contact surface 4 and the second contact surface 5 will be limited. In order to meet the connection firmness between the connecting plate 2 and the sheet 1, a third contact surface is added. The number of third contact surfaces can be one or more.

[0041] The first contact surface 4 and the second contact surface 5 are connected as a whole.

[0042] In this embodiment, if the sheet 1 is circular or elliptical, the first contact surface 4 and the second contact surface 5 can be a whole to ensure the contact area between the connecting plate 2 and the sheet 1. At the same time, the outline of the connecting plate 2 is formed when the outer contour of the sheet 1 is stamped, saving the stamping step.

[0043] When there are three or more connecting plates 2, at least one end of the connecting plate 2 is connected to another adjacent connecting plate 2 by a reinforcing structure 3.

[0044] In this embodiment, multiple connecting plates 2 can be interconnected through a reinforcing structure 3, or the connecting plates 2 can be divided into multiple groups, with each group of connecting plates 2 connected as one unit through the reinforcing structure 3. Since multiple silicon steel sheet assemblies need to be separated from the connecting plates 2 at the same time, the number of connecting plates 2 is increased, reducing the holding force between the connecting plates 2 and the sheet body 1, thereby reducing the difficulty of separating the connecting plates 2. However, in the case of a single silicon steel sheet assembly, the setting of multiple connecting plates 2 will lead to a decrease in the firmness of the connection with the sheet body 1. Therefore, the connection between the connecting plates 2 is realized through the reinforcing structure 3, so that the first contact surface 4 and the second contact surface 5 on at least two connecting plates 2 are in contact with the sheet body 1 together, avoiding the phenomenon of the connecting plates 2 falling apart.

[0045] The reinforcing structure 3 is either integrally formed or composed of the first connecting block 31 and the second connecting block 32 connected by a groove and a protrusion.

[0046] In this embodiment, if the reinforcing structure 3 is integrally formed, it means that both ends of the reinforcing structure 3 are fixedly connected to the two connecting plates 2 respectively. When separating the connecting plates 2 from the sheet body 1, the reinforcing structure 3 can be cut off. If it is an interlocking form of groove and protrusion, the first connecting block 31 and the second connecting block 32 can be completely disconnected or partially connected (that is, the first connecting block 31 and the second connecting block 32 are not completely cut off in the thickness direction, and a certain thickness of connection is retained). By separating the groove and the protrusion, the separation of the connecting plate 2 from the sheet body 1 can be achieved. The specific reinforcing structure 3 can be set according to the size of the connecting plate 2.

[0047] A groove is formed on the first connecting block 31, and a protrusion is formed on the second connecting block 32. The groove and the protrusion can move and disengage in opposite directions of insertion. The structure of the groove can be, but is not limited to, a V-shaped structure, a U-shaped structure, a C-shaped structure, or an S-shaped structure.

[0048] In this embodiment, the reversible detachable structure increases the contact area between the first connecting block 31 and the second connecting block 32, ensuring the firmness of the connection between the two connecting plates 2, and facilitating the subsequent separation of the sheet 1 and the connecting plate 2.

[0049] At least two connecting plates 2 are evenly spaced, that is, the connecting plates 2 of the silicon steel sheet assembly are evenly distributed so that when multiple silicon steel sheet assemblies are riveted together, each side of the silicon steel sheet assembly is subjected to uniform force, so as to ensure the fit between the sheet 1 and the sheet 1.

[0050] At least two connecting plates 2 have the same shape, that is, each connecting plate 2 of the silicon steel sheet assembly has the same shape, so as to facilitate the preparation of the stamping die corresponding to each connecting plate 2.

[0051] The outer contour formed by the two connecting plates 2 includes, but is not limited to, circles, squares, polygons, irregular shapes, etc., and can be designed according to the stacking requirements or the shape of the material strip of the stamping sheet 1.

[0052] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0053] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A connection structure made of an arc-shaped iron core, characterized in that, include: The sheet (1) has an outer contour that is circular or elliptical. At least two connecting plates (2) are spaced apart. The connecting plates (2) and the sheet body (1) have at least a first contact surface (4) and a second contact surface (5). At least one rivet module (21) is formed on the connecting plate (2). The rivet modules (21) on the at least two connecting plates (2) are evenly distributed in the circumferential direction of the sheet body (1).

2. The connection structure made of the arc-shaped iron core according to claim 1, characterized in that, The rivet module (21) includes a single rivet point or multiple rivets.

3. The connection structure made of the arc-shaped iron core according to claim 2, characterized in that, When there are two connecting plates (2), the point a on the first contact surface (4) that is farthest from the second contact surface (5) to the center point of the sheet (1) forms a first line segment, and the point b on the second contact surface (5) that is farthest from the first contact surface (4) to the center point of the sheet (1) forms a second line segment. The included angle between the first line segment and the second line segment is between 120 degrees and 180 degrees.

4. The connection structure made of the arc-shaped iron core according to claim 3, characterized in that, The connecting plate (2) and the sheet (1) also have at least one third contact surface, which is located between the first contact surface (4) and the second contact surface (5).

5. The connection structure made of the arc-shaped iron core according to claim 3, characterized in that, The first contact surface (4) and the second contact surface (5) are connected as a whole.

6. The connection structure made of the arc-shaped iron core according to claim 2, characterized in that, When the number of connecting plates (2) is three or more, at least one end of the connecting plate (2) forms a reinforcing structure (3) with another adjacent connecting plate (2).

7. The connection structure made of the arc-shaped iron core according to claim 6, characterized in that, The reinforcing structure (3) is integrally formed or is composed of a first connecting block (31) and a second connecting block (32) connected by a groove and a protrusion.

8. The connection structure made of the arc-shaped iron core according to claim 7, characterized in that, The groove is formed on the first connecting block (31), and the protrusion is formed on the second connecting block (32). The groove and the protrusion can move and disengage in the opposite direction of engagement.

9. The connection structure made of the arc-shaped iron core according to claim 1, characterized in that, At least two of the connecting plates (2) are evenly spaced.

10. The connection structure made of the arc-shaped iron core according to claim 9, characterized in that, At least two of the connecting plates (2) have the same shape.

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