Insulating frame, stator assembly and motor having the same

Abstract

The present invention discloses an insulating skeleton and a stator assembly and a motor having the same. The insulating skeleton includes an outer portion, an inner portion and a winding portion; the winding portion is located between the outer portion and the inner portion and is used for winding windings; the winding portion has two side plates arranged opposite to each other, and the outer wall of the side plate is provided with a plurality of first convex strips distributed at intervals; a first accommodating gap is formed between two adjacent windings in the innermost layer on the side plate, and at least one first convex strip is provided in the first accommodating gap. According to the insulating skeleton provided by the present invention, a plurality of first convex strips are provided on the side plate, and the first convex strips are in the first accommodating gap between two adjacent windings, which not only does not affect the winding, but also forms a reinforcing rib structure, thereby improving the structural strength of the side plate, preventing the side plate from breaking, and thereby improving the reliability of the motor.

Description

Technical Field

[0001] The present invention relates to the technical field of household appliances, and in particular to an insulating frame and a stator component and a motor having the same. Background Art

[0002] Generally, a motor is composed of a stator, a rotor, a casing and other parts. The stator includes a stator core, an insulation structure and a winding. The winding is wound on an insulating frame and is usually an enameled wire.

[0003] However, in order to increase the winding space of the enameled wire, the existing insulating skeleton structure is designed to be very thin, and the strength of some areas is insufficient. When the enameled wire is wound on the skeleton, the tension of the enameled wire squeezes the skeleton. The skeleton is prone to cracking at the position where the enameled wire has many layers, and the enameled wire contacts the stator core, causing the motor to break down. Summary of the invention

[0004] The first purpose of the present invention is to provide an insulating frame to solve the problem that the existing frame has low structural strength and is easy to break due to design requirements, thereby reducing the reliability of the motor.

[0005] To achieve the above-mentioned purpose, the technical solution proposed in the present invention is as follows: an insulating skeleton, comprising an outer portion, an inner portion and a winding portion; the winding portion is located between the outer portion and the inner portion, and is used for winding the winding; the winding portion has two side plates arranged opposite to each other, and the outer wall of the side plate is provided with a plurality of first convex strips distributed at intervals; a first accommodating gap is formed between two adjacent innermost windings on the side plate, and at least one of the first convex strips is provided in the first accommodating gap.

[0006] According to the insulating frame provided by the present invention, a plurality of first convex strips are provided on the side plate. The first convex strips are within the first accommodating gap between two adjacent windings. Not only do they not affect the windings, but the first convex strips also form a reinforcing rib structure, thereby improving the structural strength of the side plate, preventing the side plate from breaking, and thereby improving the reliability of the motor.

[0007] In addition, an insulating skeleton according to the above embodiment of the present invention may also have the following additional technical features:

[0008] According to an example of the present invention, the length of the first convex strip extends along the length direction of the side plate.

[0009] According to an example of the present invention, the thickness of the side plate gradually increases along the width direction thereof as the number of layers of the winding increases.

[0010] According to an example of the present invention, a top plate and a bottom plate that are oppositely arranged are connected between the two side plates; the top plate, the bottom plate and the side plates together form a connecting groove that is adapted to the stator teeth.

[0011] According to an example of the present invention, a plurality of second convex strips distributed at intervals are provided on the top plate.

[0012] According to an example of the present invention, on the top plate, the winding and the outer portion and / or the inner portion form a second accommodating gap, and the second convex strip is located in the second accommodating gap.

[0013] According to an example of the present invention, it also includes a plurality of third convex strips arranged on the inner wall of the side plate at intervals.

[0014] According to an example of the present invention, a plurality of rows of the third ridges are spaced apart along the length direction of the side plate, and each row of the third ridges has a plurality of the third ridges spaced apart.

[0015] According to an example of the present invention, a row of the third ridges close to the top plate extends to the inner wall of the top plate and is connected to the inner wall of the top plate; and / or, a row of the third ridges close to the bottom plate extends to the inner wall of the bottom plate and is connected to the inner wall of the bottom plate.

[0016] According to an example of the present invention, the plurality of third convex strips and the plurality of windings in the innermost layer are arranged in a one-to-one correspondence with respect to the side plate.

[0017] According to an example of the present invention, the outer portion is provided with a wire inlet groove; the winding wire is wound on the winding portion through the wire inlet groove.

[0018] According to an example of the present invention, the cable entry slot includes a first area and a second area adjacent to each other, and the depth of the first area is greater than the depth of the second area.

[0019] The second object of the present invention is to provide a stator assembly having an insulating skeleton as described in the above technical solution.

[0020] The third object of the present invention is to provide a motor having a stator assembly as described in the above technical solution. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic structural diagram of an insulating skeleton according to an embodiment of the present invention;

[0022] Figure 2 for Figure 1 AA section view;

[0023] Figure 3 for Figure 2 A magnified view of part B;

[0024] Figure 4 It is a schematic structural diagram of an insulating frame with winding wires wound thereon according to an embodiment of the present invention;

[0025] Figure 5 A top view of an insulating frame with winding wires according to an embodiment of the present invention;

[0026] Figure 6 for Figure 1 Enlarged view of part C;

[0027] Figure 7 It is a schematic structural diagram of an insulating frame with plug pins according to an embodiment of the present invention;

[0028] Figure 8 is a structural schematic diagram of a stator assembly according to an embodiment of the present invention;

[0029] Fig. 9 An exploded view of a stator assembly according to an embodiment of the present invention;

[0030] Fig.10 Schematic diagram of the structure of a motor according to an embodiment of the present invention.

[0031] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0032] 1. Outer part; 2. Inner part; 3. Winding part; 4. Side panel; 5. Top panel; 6. Bottom panel; 7. Pointer; 8. First ridge; 9. First accommodation gap; 10. Enameled wire; 11. Second ridge; 12. Third ridge; 13. Wire inlet groove; 14. First area; 15. Second area; 16. Connecting groove; 17. Yoke; 18. Tooth; 19. Circuit board assembly; 20. Casing; 21. Rear end cover; 22. Rear bearing; 23. Front end cover; 24. Front bearing. DETAILED DESCRIPTION

[0033] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0034] Embodiment 1

[0035] Combined with Figure 1 As shown, this embodiment provides an insulating skeleton, including a plurality of skeleton units, the insulating skeleton includes an outer portion 1, an inner portion 2 and a winding portion 3, the winding portion 3 is located between the outer portion 1 and the inner portion 2, and is used for winding a winding wire, and the winding wire is an enameled wire 10; specifically, the outer portion 1 and the inner portion 2 are approximately plate-like structures, the winding portion 3 includes two oppositely arranged side plates 4, and a top plate 5 arranged between the two side plates 4 and respectively connected to the two side plates 4, and a bottom plate 6 arranged between the two side plates 4 and respectively connected to the two side plates 4, the two side plates 4, the top plate 5 and the bottom plate 6 together form a connecting groove 16, and the connecting groove 16 is used to connect to the tooth portion 18 of the stator.

[0036] It should be noted that the “inside” and “outside” in this embodiment generally refer to the inside and outside of the stator core after the insulating frame is matched with the stator core.

[0037] Each skeleton unit of this embodiment is connected to a stator core tooth portion 18 through a connecting slot 16. Figure 7 As shown, a pointer 7 is installed on the outer side 1 of each skeleton unit, and the pointers 7 of each skeleton unit are connected through a line, so that multiple skeleton units can be connected to form an integral insulating skeleton.

[0038] Combined with Figure 1-3 As shown, one of the improvements made to the insulating skeleton of this embodiment compared with the prior art is that a plurality of first convex strips 8 distributed at intervals are provided on the outer wall of the side panel 4; a first accommodating gap 9 is formed between two adjacent innermost windings on the side panel 4, and at least one first convex strip 8 is provided in the first accommodating gap 9.

[0039] The above structure not only does not affect the winding, but also forms a reinforcing rib structure through the multiple first convex strips 8, thereby improving the structural strength of the side plate 4, preventing the side plate 4 from breaking, and thus improving the reliability of the motor.

[0040] Preferably, the length of the first ridge 8 of this embodiment extends along the length direction of the side panel 4 , and the length of the first ridge 8 is the same or substantially the same as that of the side panel 4 , further improving the structural strength of the side panel 4 .

[0041] Combined with Figure 2 As shown, the present embodiment also makes an improved design for the thickness of the side panel 4. Since the enameled wire 10 wound on the winding portion 3 generally decreases in number of layers from the top to the bottom in the figure, the pressures exerted on various areas of the side panel 4 are inconsistent. Therefore, the present embodiment gradually increases the thickness of the side panel 4 along its width direction as the number of winding layers increases, so that the thickness of the side panel 4 in the area with more winding layers is large, while the thickness of the side panel 4 in the area with relatively fewer winding layers is relatively small, thereby improving the stability of the side panel 4 and being able to relatively reduce the thickness of the side panel 4 and increase the winding space.

[0042] Based on the above structure, this embodiment further improves the top plate 5. Figure 4 and 5As shown, in this embodiment, a plurality of second ridges 11 are provided on the top plate 5 and are distributed at intervals. The winding forms a second accommodating gap (not shown in the figure) between the top plate 5 and the outer side 1, or the winding forms a second accommodating gap between the top plate 5 and the inner side 2, or the winding forms a second accommodating gap on the outer side 1 and the inner side 2. The second ridge 11 is located in the second accommodating gap. Specifically, the second ridge 11 is provided in an area near the connection between the top plate 5 and the outer side 1, and / or the second ridge 11 is provided in an area near the connection between the top plate 5 and the inner side 2. The function of the second ridge 11 is to increase the connection strength between the top plate 5 and the outer side 1 or the inner side 2, and further improve the reliability of the insulating skeleton.

[0043] In addition, combined with Figure 1 and 6 As shown, the present embodiment further provides a plurality of third ridges 12 spaced apart on the inner wall of the side panel 4 . Preferably, the third ridges 12 of the present embodiment are arranged in multiple rows, and each row has a plurality of third ridges 12 spaced apart, so as to further improve the structural strength of the side panel 4 .

[0044] Preferably, the third ridges 12 of this embodiment are of two types, one is two rows of third ridges 12 near the top plate 5 and the bottom plate 6, and the other is multiple rows of third ridges 12 located between the upper two rows of third ridges 12. Based on this, this embodiment is further improved by extending a row of third ridges 12 near the top plate 5 to the inner wall of the top plate 5 and connecting to the inner wall of the top plate 5; and a row of third ridges 12 near the bottom plate 6 can also be extended to the inner wall of the bottom plate 6 and connected to the inner wall of the bottom plate 6. The structural strength of the connection between the side plate 4 and the bottom plate 6 and the connection between the side plate 4 and the top plate 5 is improved, and the structural strength of the top plate 5, the bottom plate 6 and the side plate 4 is further enhanced.

[0045] More preferably, the multiple third ridges 12 of this embodiment are arranged one-to-one with the multiple windings of the innermost layer about the side panel 4, that is, the number of third ridges 12 in each row is the same as the number of windings of the nearest layer on the outside of the side panel 4 and the positions are symmetrical about the side panel 4.

[0046] It should be noted that the above-mentioned “two adjacent windings” and “the number of windings” in this embodiment do not mean that there are multiple windings. Generally speaking, there is only one winding (enameled wire 10), but one winding wound on the winding part 3 can form multiple side-by-side winding units. Therefore, the “two” in the above-mentioned “two windings” and “the number of windings” both refer to the number of winding units.

[0047] Based on the above structure, the inventors found that the existing outer part 1 is not provided with a wire input structure. After the enameled wire 10 is introduced from the outer part 1, it is directly laid on the outer part 1 and then wound on the winding part 3. It is easy for the enameled wires 10 to cross each other, resulting in reduced effective utilization of the winding space, reduced winding slot fullness, large motor winding resistance, high copper loss, and low efficiency.

[0048] Therefore, combined with the Figure 1 , 4 As shown in FIG. 5 , the present embodiment further provides a wire entry groove 13 in the outer portion 1 ; the wire is wound on the winding portion 3 through the wire entry groove 13 , which prevents the enameled wires 10 from crossing each other, thereby improving the effective utilization of the winding space.

[0049] Specifically, the wire inlet groove 13 of this embodiment includes a first area 14 and a second area 15 adjacent to each other. The depth of the first area 14 is greater than the depth of the second area 15 to accommodate the inlet and outlet wires of the enameled wire 10 .

[0050] Embodiment 2

[0051] Combined with Figure 8 and 9 As shown, this embodiment provides a stator assembly, which includes a stator core and the insulating frame described in Example 1, the stator core includes a yoke 17, a tooth 18 and a circuit board assembly 19; the circuit board assembly 19 is connected to the pins on the insulating frame, and the stator core tooth 18 is connected to the insulating frame. Of course, except for the insulating frame of this embodiment, the structures and specific connection relationships of the yoke 17, the tooth 18 and the circuit board assembly 19 are common knowledge in the field, so this embodiment will not be described in detail.

[0052] Embodiment 3

[0053] Combined with Fig.10 As shown, this embodiment provides a motor, which includes the stator assembly, housing 20, rear end cover 21, rear bearing 22, front end cover 23, front bearing 24 and other components in Example 2. Its specific structure is the same as that of the prior art except for the insulating frame. Therefore, this embodiment does not elaborate on the functions, connection relationships, etc. of its various components.

[0054] In the description of the present invention, it is necessary to understand that the terms "inside", "outside", etc. indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as a limitation on the present invention.

[0055] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0056] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, etc. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0057] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. An insulating frame, comprising an outer portion (1), an inner portion (2) and a winding portion (3); the winding portion (3) is located between the outer portion (1) and the inner portion (2) and is used for winding a winding; characterized in that: The winding portion (3) comprises two side plates (4) arranged opposite to each other, and the outer wall of the side plate (4) is provided with a plurality of first convex strips (8) distributed at intervals; a first accommodation gap (9) is formed between two adjacent innermost windings on the side plate (4), and at least one first convex strip (8) is provided in the first accommodation gap (9); a top plate (5) and a bottom plate (6) arranged opposite to each other are connected between the two side plates (4); the top plate (5), the bottom plate (6) and the side plates (4) together form a connecting groove (16) adapted to the tooth portion (18) of the stator; a second convex strip (11) is provided on the top plate (5); on the top plate (5), the winding forms a second accommodation gap with the outer portion (1) and / or the inner portion (2), and the second convex strip (11) is located in the second accommodation gap; and a pointer (7) is mounted on the outer portion (1).

2. The insulating frame according to claim 1, characterized in that: The length of the first convex strip (8) extends along the length direction of the side plate (4).

3. The insulating frame according to claim 1, characterized in that: The thickness of the side plate (4) gradually increases along its width direction as the number of layers of the winding increases.

4. The insulating frame according to claim 1, characterized in that: It also includes a plurality of third convex strips (12) arranged at intervals on the inner wall of the side plate (4).

5. The insulating frame according to claim 4, characterized in that: A plurality of rows of the third convex strips (12) are spaced apart along the length direction of the side plate (4), and a plurality of the third convex strips (12) are spaced apart in each row.

6. The insulating frame according to claim 5, characterized in that: A row of the third convex strips (12) close to the top plate (5) extends to the inner wall of the top plate (5) and is connected to the inner wall of the top plate (5); and / or a row of the third convex strips (12) close to the bottom plate (6) extends to the inner wall of the bottom plate (6) and is connected to the inner wall of the bottom plate (6).

7. The insulating skeleton according to any one of claims 4 to 6, characterized in that: The plurality of third convex strips (12) and the plurality of windings in the innermost layer are arranged in a one-to-one correspondence with respect to the side plate (4).

8. The insulating skeleton according to any one of claims 1 to 6, characterized in that: The outer portion (1) is provided with a wire inlet groove (13); the winding wire is wound on the winding portion (3) through the wire inlet groove (13).

9. The insulating frame according to claim 8, characterized in that: The cable entry trough (13) comprises a first area (14) and a second area (15) which are adjacent to each other, and the depth of the first area (14) is greater than the depth of the second area (15).

10. A stator assembly, characterized in that: It comprises a stator core and an insulating frame according to any one of claims 1 to 9; the insulating frame is connected to the stator core.

11. A motor, characterized in that: Comprising a stator assembly according to claim 10.

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