Chain-type stator punching sheet and stator, motor and refrigerator having the same

Abstract

The present invention discloses a chain stator punching sheet and a stator, motor and refrigerator having the same. The chain stator punching sheet comprises: a plurality of punching sheet units, each punching sheet unit comprising a stator yoke and a stator tooth unit, the stator tooth unit being connected to the middle portion of the stator yoke unit, the stator yoke units of adjacent punching sheet units being connected via a connecting assembly, at least two punching sheet units being fixed punching sheet units, the stator yoke units of the fixed punching sheet units being provided with two intersecting side surfaces on the side walls away from the stator tooth unit, the fixed punching sheet units being provided with mounting holes, the mounting holes being located at the corners of the two intersecting side surfaces, and the central symmetry line of the fixed punching sheet units passing through the mounting holes. Thus, when the chain stator punching sheet is processed, the material utilization rate can be improved and the production cost can be reduced. Moreover, the punching sheets at both ends of the chain stator punching sheet can be connected to form an annular structure, and the molding method is simple. At the same time, the chain stator punching sheet can be fixed by the mounting holes, and the reliability is high.

Description

Technical Field

[0001] The present invention relates to the technical field of refrigeration equipment, and in particular to a chain-type stator punching sheet and a stator, a motor and a refrigerator having the same. Background Art

[0002] In the related art, the stator punching sheets in the stator core of the motor are mostly processed by integrated stamping, and the stator punching sheets are usually constructed as an annular structure, which occupies a large space in the plate to be processed and wastes materials, resulting in high production costs. In addition, it is difficult to fix the multiple stator punching sheets in the stator core. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a chain stator punching, which is easy to connect and fix.

[0004] The present invention also provides a stator.

[0005] The present invention also provides a motor.

[0006] The present invention also provides a refrigerator.

[0007] According to an embodiment of the present invention, the chain stator punching sheet includes a plurality of punching sheet units, each punching sheet unit includes a stator yoke portion and a stator tooth portion, the stator tooth portion is connected to the middle portion of the stator yoke portion, and the stator yoke portions of adjacent punching sheet units are connected by a connecting component. At least two of the punching sheet units are fixed punching sheet units, and two intersecting side surfaces are provided on the side walls of the stator yoke portion of the fixed punching sheet unit away from the stator tooth portion. A mounting through hole is provided on the fixed punching sheet unit, and the mounting through hole is located at the corner of the two intersecting side surfaces. The central symmetry line of the fixed punching sheet unit passes through the mounting through hole.

[0008] The chain stator punchings according to the embodiments of the present invention can improve material utilization and reduce production costs during processing. Furthermore, the punchings at both ends of the chain stator punching can be connected to form a ring structure, simplifying the forming process. Furthermore, the chain stator punchings can be fixed via mounting holes, providing high reliability.

[0009] According to some embodiments of the present invention, the center of the mounting through hole is located on the central symmetry line of the fixed punching sheet unit.

[0010] Furthermore, a notch is provided on the side of the connecting assembly between two adjacent punching sheet units facing the stator tooth portion, the angle between the opposite side walls of the notch is β, and the angle between the two intersecting side surfaces is α, wherein the angle α and the angle β satisfy the following relationship: α = (180°-β) ± 1.5°.

[0011] Furthermore, the angle between the two intersecting side surfaces is α, wherein α=360° / n, and n is the number of the punching sheet units of the chain-type stator punching sheet.

[0012] Furthermore, each punching sheet unit is provided with a rivet point.

[0013] Furthermore, each punching sheet unit is provided with a plurality of rivet points, wherein a portion of the rivet points are located on the stator yoke, and another portion of the rivet points are located on the stator teeth.

[0014] Furthermore, the number of the punching sheet units is six, four of which are fixed punching sheet units, two of which are adjacent to each other, and the other two are adjacent to each other.

[0015] A stator according to an embodiment of the present invention includes a stator core, wherein the stator core includes a plurality of chain-type stator punchings stacked and arranged in a ring shape, and the chain-type stator punchings are the chain-type stator punchings described above.

[0016] A motor according to an embodiment of the present invention includes the above-mentioned stator.

[0017] A refrigerator according to an embodiment of the present invention includes the above-mentioned motor.

[0018] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0020] Figure 1 2 is a schematic structural diagram of a chain-type stator punching sheet according to an embodiment of the present invention;

[0021] Figure 2 1 is a schematic structural diagram of a chain stator punching according to an embodiment of the present invention, wherein the chain stator punching is arranged in a surrounding manner;

[0022] Figure 3 yes Figure 2 A partial enlarged view of point A in the middle;

[0023] Figure 4 Schematic diagram of the arrangement of multiple chain stator punching sheets during stamping according to an embodiment of the present invention.

[0024] Reference numerals:

[0025] Chain stator punching 100,

[0026] Punching sheet unit 10, fixed punching sheet unit 101, mounting through hole 101a, non-fixed punching sheet unit 102,

[0027] stator yoke 11, first positioning portion 111, second positioning portion 112, stator teeth 12,

[0028] Rivet points 13 and connecting components 14. DETAILED DESCRIPTION

[0029] The following describes embodiments of the present invention in detail. 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 intended only to explain the present invention and are not to be construed as limiting the present invention.

[0030] In the description of the present invention, it should be understood 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 orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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 limiting the present invention. In addition, features defined as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0031] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0032] Reference below Figures 1-4 A chain-type stator lamination 100 according to an embodiment of the present invention is described.

[0033] The chain-type stator punching sheet 100 according to the embodiment of the present invention includes a plurality of punching sheet units 10 .

[0034] Reference Figure 1Each punching sheet unit 10 includes: a stator yoke portion 11 and a stator tooth portion 12 , the stator tooth portion 12 is connected to the middle portion of the stator yoke portion 11 , and the stator yoke portions 11 of adjacent punching sheet units 10 are connected via a connecting assembly 14 .

[0035] like Figure 1 As shown, the plurality of punching sheets 10 in the chain stator punching sheet 100 are arranged in sequence along a straight line, and two adjacent punching sheets 10 are connected by a connecting assembly 14 , thereby the plurality of punching sheets 10 can be connected in sequence to form the chain stator punching sheet 100 .

[0036] Specifically, the plurality of sheet units 10 in the chain stator sheet 100 can be arranged in a circle to construct the chain stator sheet 100 into a ring structure. The chain stator sheet 100 arranged in a ring structure can meet the requirements of the stator core for the shape of the plurality of stator sheets therein.

[0037] When the chain stator punching sheet 100 is processed, the chain structure can be maintained, and there is no need to surround and arrange multiple punching sheet units 10, so as to save the space occupied during processing. Figure 4 , multiple chain stator punching sheets 100 are stamped on the same plate to be processed. Multiple chain stator punching sheets 100 can be arranged in the plate in a chain structure and staggered. Compared with the method of directly punching the stator punching sheets into a ring structure, the plate to be processed can be fully utilized and the material utilization rate can be significantly improved.

[0038] When the chain-type stator punching sheets 100 are arranged in a circular manner, the punching sheet units 10 at both ends of the chain-type stator punching sheets 100 are connected.

[0039] It can be understood that in the chain stator punching sheet 100, the stator yokes 11 of two adjacent punching sheet units 10 are connected by a connecting component 14. When the chain stator punching sheet 100 needs to be arranged in a ring structure, the free ends of the stator yokes 11 of the punching sheet units 10 at both ends are connected.

[0040] Reference Figure 1 In the chain-type stator lamination 100, at least two lamination units 10 are stationary lamination units 101. The sidewalls of the stator yoke 11 of the stationary lamination units 101, which are away from the stator teeth 12, are provided with two intersecting side surfaces. The stationary lamination units 101 are provided with mounting holes 101a, which are located at the corners of the two intersecting side surfaces. The central symmetry line of the stationary lamination units 101 passes through the mounting holes 101a.

[0041] Furthermore, the chain stator punching sheet 100 is applied to the stator, and the stator core of the stator includes a plurality of chain stator punching sheets 100, and the plurality of chain stator punching sheets 100 can be installed and fixed in the stator through the mounting through holes 101a. When the plurality of chain stator punching sheets 100 are stacked, the mounting through holes 101a of the plurality of chain stator punching sheets 100 are correspondingly arranged so as to facilitate the installation and fixing of the plurality of chain stator punching sheets 100 by means of a fixing connector (not shown in the figure) passing through the mounting through holes 101a. This can reduce the difficulty of assembling the stator core and improve assembly efficiency. The fixing connector can be a screw.

[0042] It should be noted that if Figure 1 As shown, in the chain-type stator punching sheet 100 , in addition to the fixed punching sheet unit 101 , it may further include: a non-fixed punching sheet unit 102 , that is, a punching sheet unit 10 without the above-mentioned mounting through hole 101 a .

[0043] Combine Figure 1 Compared with the non-fixed punching sheet monomer 102, the fixed punching sheet monomer 101 is provided with a V-shaped sharp angle structure at the end of the stator yoke 11 away from the stator tooth portion 12, and a mounting through-hole 101a is provided at the sharp angle structure. It can be understood that the provision of a through-hole structure on the punching sheet monomer 10 will affect the magnetic circuit generated when the stator is working, and the setting position of the mounting through-hole 101a in the present application makes the influence on the magnetic circuit in the stator controllable. At the same time, when the chain stator punching sheet 100 is fixed through the mounting through-hole 101a, the winding position can be avoided to avoid interference between the connecting component used for fixing and the coil, so as to ensure the performance of the stator when it is working.

[0044] The chain stator punching 100 according to the embodiment of the present invention improves material utilization and reduces production costs during processing. Furthermore, the chain stator punching 100 can be formed into a ring structure by connecting the punching units 10 at both ends thereof, thus simplifying the forming process. Furthermore, the chain stator punching 100 can be secured via the mounting holes 101a, thus providing high reliability.

[0045] In some embodiments of the present invention, the center of the mounting through hole 101a is located on the central symmetry line of the fixed punching sheet unit 101, and the mounting through hole 101a can be arranged symmetrically on the fixed punching sheet unit 101 about the central symmetry line, which can reduce the processing difficulty of the chain stator punching sheet 100 and facilitate the correspondence of the mounting through holes 101a of multiple chain stator punching sheets 100.

[0046] like Figure 1As shown, the connecting assembly 14 between two adjacent lamination units 10 has a notch on the side facing the stator tooth 12. The angle between the opposing sidewalls of the notch is β, and the angle between the two intersecting side surfaces is α. The angles α and β satisfy the following relationship: α = (180° - β) ± 1.5°. When the angles α and β satisfy this relationship, the chain stator laminations 100 can be looped around, and the two adjacent lamination units 10 can fit tightly together.

[0047] Combine Figure 1 and Figure 2 When multiple sheet units 10 in the chain stator sheet 100 need to be arranged in a circular pattern, two adjacent sheet units 10 can be moved toward the gap and the two opposing side walls can be aligned. The two opposing side walls of the gap are the ends of the stator yoke 11 of the two sheet units 10, so that the two adjacent sheet units 10 can be tightly aligned.

[0048] Furthermore, the angle between the two intersecting side surfaces is α, where α = 360° / n, where n is the number of the lamination units 10 of the chain-type stator lamination 100. When the angle α and the number of lamination units 10 meet the above parameters, the design and development of the structure of the lamination units 10 are facilitated, and when multiple lamination units 10 are arranged in a circular manner, two adjacent lamination units 10 can be tightly fitted.

[0049] like Figure 1 and Figure 2 As shown, each punching sheet 10 is provided with a plurality of rivet points 13. It is understood that in the stator, a plurality of chain stator punching sheets 100 are stacked in the thickness direction thereof, and two adjacent chain stator punching sheets 100 can be positioned by the rivet points 13, thereby reducing the difficulty of fitting between the chain stator punching sheets 100 and improving assembly efficiency.

[0050] Furthermore, there are multiple rivet points 13, some of which are located on the stator yoke 11, and other rivet points 13 are located on the stator teeth 12, thereby improving the positioning effect between two adjacent chain stator punching sheets 100, and the rivet points 13 can be set on the central symmetry line of the punching sheet unit 10, and arranged on at least one of the stator yoke 11 and the stator tooth 12 according to design requirements.

[0051] Specifically, in the chain-type stator punching 100, the rivet points 13 provided on the stator yoke 11 can be provided and positioned correspondingly with the rivet points 13 on the stator yoke 11 of the chain-type stator punching 100 adjacent to the chain-type stator punching 100, thereby positioning the stator yoke 11 of the punching unit 10 in the two adjacent chain-type stator punchings 100; the rivet points 13 provided on the stator teeth 12 can be provided and positioned correspondingly with the rivet points 13 on the stator teeth 12 of the chain-type stator punching 100 adjacent to the chain-type stator punching 100, thereby positioning the stator teeth 12 of the punching unit 10 in the two adjacent chain-type stator punchings 100. In this way, the positioning effect of the two adjacent chain-type stator punchings 100 can be improved.

[0052] like Figure 1 and Figure 2 As shown, according to a specific embodiment of the present invention, the number of punching sheet units 10 is six, of which four punching sheet units 10 are fixed punching sheet units 101, two fixed punching sheet units 101 are adjacent to each other, and the other two fixed punching sheet units 101 are adjacent to each other.

[0053] Reference Figure 1 The six punching sheet monomers 10 include four fixed punching sheet monomers 101 and two non-fixed punching sheet monomers 102, and are arranged in sequence in the form of one non-fixed punching sheet monomer 102, two fixed punching sheet monomers 101, one non-fixed punching sheet monomer 102 and two fixed punching sheet monomers 101. Therefore, when the six punching sheet monomers 10 are arranged in a circle, the chain stator punching sheet 100 with an annular structure is an axially symmetrical structure, making the structure of the chain stator punching sheet 100 with an annular structure more regular.

[0054] In some embodiments of the present invention, a first positioning portion 111 and a second positioning portion 112 are respectively provided at both ends of the stator yoke 11. When the chain stator punching sheets 100 are arranged in a circular manner, the first positioning portion 111 and the second positioning portion 112 cooperate to position two adjacent punching sheet units 10.

[0055] Furthermore, one of the first positioning portion 111 and the second positioning portion 112 is constructed as a groove, and the other is constructed as a protrusion that matches the shape of the groove, thereby ensuring that the first positioning portion 111 and the second positioning portion 112 fit tightly together, so that two adjacently arranged punching sheets 10 can fit tightly together. When multiple punching sheets 10 are arranged in a circle, the cooperation between the first positioning portion 111 and the second positioning portion 112 guides the movement direction of the punching sheet 10, and can assist in the circle forming of the chain stator punching sheet 100. Figure 3 , wherein the first positioning portion 111 is configured as a protrusion and the second positioning portion 112 is configured as a groove.

[0056] In other embodiments of the present invention, the free ends of the stator yokes 11 of the sheet units 10 at both ends of the chain stator sheet 100 (i.e., the ends where no other sheet units 10 are provided) are respectively provided with first positioning portions 111 and second positioning portions 112. When the chain stator sheet 100 is arranged in a circular manner, the first positioning portions 111 and the second positioning portions 112 cooperate to assist in the circular molding of the chain stator sheet 100.

[0057] Reference Figure 4 Specifically, when processing the chain stator laminations 100, the multiple lamination units 10 in each chain stator lamination 100 can be arranged in a straight line. Two adjacent chain stator laminations 100 can be understood as a group. The two adjacent chain stator laminations 100 in each group are arranged in opposite directions. Moreover, the lamination units 10 in the two chain stator laminations 100 are staggered. The stator tooth portion 12 of each lamination unit 10 extends into the area defined between the two adjacent lamination units 10 in the other chain stator lamination 100. As a result, each group of chain stator laminations 100 is compactly arranged, which can save the space occupied by each group (i.e., two chain stator laminations 100) in the plate and improve the utilization rate of the plate.

[0058] Furthermore, the stator yoke 11 between each adjacent group (the two mentioned above) of chain stator punching sheets 100 extends into the area between the stator yoke 11 of two adjacent punching sheet units 10 in the adjacent group, thereby making the arrangement between multiple groups of chain stator punching sheets 100 more compact, saving the space occupied by multiple groups of chain stator punching sheets 100 in the plate and improving the utilization rate of materials.

[0059] A stator according to an embodiment of the present invention includes a stator core, which includes a plurality of chain stator punchings 100 stacked and arranged in a ring shape. The chain stator punchings 100 are the chain stator punchings 100 described above. The processing of the chain stator punchings 100 can improve material utilization and reduce production costs. Furthermore, the punching units 10 at both ends of the chain stator punchings 100 can be connected to form a ring structure, resulting in a simple molding method.

[0060] According to the motor of the embodiment of the present invention, the motor includes the above-mentioned stator. The stator is formed in a simple manner and has high reliability, which can ensure the performance of the motor, save materials, and reduce production costs.

[0061] According to the refrigerator of the embodiment of the present invention, the refrigerator includes the above-mentioned motor. The refrigerator has the same advantages as the above-mentioned motor and the chain-type stator punching sheet 100 of the present application, which will not be repeated here.

[0062] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative uses 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 any one or more embodiments or examples.

[0063] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A chain stator punching, characterized in that: The invention comprises a plurality of punching sheet monomers, each of which comprises a stator yoke portion and a stator tooth portion, and each punching sheet monomer has only one stator tooth portion, wherein the stator tooth portion is connected to the middle portion of the stator yoke portion, and the stator yoke portions of adjacent punching sheet monomers are connected by a connecting assembly, and at least two of the punching sheet monomers are fixed punching sheet monomers, and two intersecting side surfaces are provided on the side walls of the stator yoke portion of the fixed punching sheet monomer away from the stator tooth portion, and a mounting through hole is provided on the fixed punching sheet monomer, and the mounting through hole is located at the corner of the two intersecting side surfaces, and the central symmetry line of the fixed punching sheet monomer passes through the mounting through hole; The number of the punching sheet units is six, of which four are fixed punching sheet units and the other two are non-fixed punching sheet units. The six punching sheet units are arranged in the following order: one non-fixed punching sheet unit, two fixed punching sheet units, one non-fixed punching sheet unit, and two fixed punching sheet units. The stator yoke of the non-fixed punching sheet unit also has two intersecting side edges on its side wall away from the stator teeth. The stator yoke of the fixed punching sheet unit is provided with a V-shaped sharp angle structure at one end away from the stator teeth, and a mounting through hole is provided at the sharp angle structure.

2. The chain stator punching sheet according to claim 1, characterized in that: The center of the mounting through hole is located on the central symmetry line of the fixed punching sheet unit.

3. The chain stator lamination according to claim 1, characterized in that: A notch is provided on the side of the connecting assembly between two adjacent punching sheet units facing the stator tooth portion, the angle between the opposite side walls of the notch is β, and the angle between the two intersecting side surfaces is α, wherein the angle α and the angle β satisfy the following relationship: α = (180°-β) ± 1.5°.

4. The chain stator lamination according to claim 1, characterized in that: The angle between the two intersecting side surfaces is α, where α=360° / n, and n is the number of the punching sheet units of the chain-type stator punching sheet.

5. The chain stator lamination according to claim 1, characterized in that: Each punching sheet unit is provided with a rivet point.

6. The chain stator punching sheet according to claim 5, characterized in that: Each punching sheet is provided with a plurality of rivet points, wherein a portion of the rivet points are located on the stator yoke portion, and another portion of the rivet points are located on the stator teeth portion.

7. A stator, characterized in that: The invention comprises a stator core, wherein the stator core comprises a plurality of chain-type stator punching sheets stacked and arranged in a ring shape, and the chain-type stator punching sheets are the chain-type stator punching sheets according to any one of claims 1 to 6.

8. A motor, characterized in that: Comprising a stator according to claim 7.

9. A refrigerator, characterized in that: Comprising the motor according to claim 8.

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