A skeleton structure, a stator and a motor

Abstract

The present invention discloses a skeleton structure, a stator and a motor, which relates to the field of motor technology and solves the technical problem of the bridge wire becoming loose after the straight stator is rounded in the prior art. The skeleton structure of the present invention includes a plurality of skeleton monomers, and the plurality of skeleton monomers are plastic-coated on the stator core. The skeleton monomers are used to form a wire-passing portion protruding from the end face on the end face of the bridge wire. After the stator core is rounded, the bridge wire is supported by the wire-passing portion and the bridge wire is kept in a taut state. In the skeleton structure of the present invention, when the stator is not rounded, the bridge wire is routed through the wire-passing portion. After the stator is rounded, since the wire-passing portion protrudes from the end face, the bridge wire is supported by the wire-passing portion protruding from the end face. Compared with the structure of the prior art in which the bridge wire slot is lower than the end face of the bridge wire, the wire-passing portion of the present invention can increase the circumference of the bridge wire. When the total length of the bridge wire remains unchanged, the circumference increases, and the bridge wire can be kept in a taut state, thereby preventing the bridge wire from becoming loose.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and in particular to a skeleton structure, a stator and a motor. Background Art

[0002] The motor includes components such as a stator, a rotor and a housing, wherein the stator includes structures such as an iron core, an insulating frame and a winding. The plastic-coated frame of the existing straight stator iron core adopts a straight line shape, and the stator bridge line passes through the outer straight line surface of the frame. Figure 1 and Figure 2 The three-dimensional schematic diagram and the front view of the existing skeleton monomer are shown respectively. Figure 1 As shown in FIG. 2 , three bridge wire grooves 11 ′ are provided on the bridge wire end surface 1 ′ of the existing skeleton monomer, and the three bridge wire grooves 11 ′ are respectively used for routing bridge wires of different phases.

[0003] In the existing skeleton structure, when the stator is in a straight state, the bridge wire is taut; after the straight stator is rounded, the bridge wire is deformed from a straight line to an arc, and the bridge wire is supported by the first support point 12' and the second support point 13' formed by the edges of both sides of the skeleton, such as Figure 1 Or as shown in 2. Since the height of the first fulcrum 12' and the second fulcrum 13' is relatively low, specifically, it is lower than the end face 1' of the bridge wire, and there is a quality abnormality that the bridge wire becomes loose. When the bridge wire becomes loose, during the stator injection molding process, the impact force of the BMC material can easily push the bridge wire out of the bridge wire slot 11', causing the bridge wire to contact the stator core or shorten the insulation distance (i.e., the safety distance), resulting in poor withstand voltage. When the bridge wire becomes loose, it is also easy for the bridge wire to slip out of the bridge wire slot 11', causing the bridge wire to cross, thereby causing the stator winding phases to contact each other, resulting in a phase-to-phase short circuit.

[0004] Therefore, there is an urgent need to improve the existing skeleton structure, and providing a skeleton structure that can prevent the bridge wire from becoming loose after the straight stator is rounded has become a technical problem that needs to be solved urgently by technical personnel in this field. Summary of the invention

[0005] One of the purposes of the present invention is to provide a skeleton structure, a stator and a motor, which solves the technical problem in the prior art that the bridge wire becomes loose after the straight stator is rounded. The various technical effects that can be produced by the preferred technical solution of the present invention are described in detail below.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] The skeleton structure of the present invention comprises a plurality of skeleton monomers, wherein the plurality of skeleton monomers are plastic-coated on a stator core, wherein a wire-passing portion protruding from the end face of the skeleton monomer for passing a bridge wire is formed, and after the stator core is rounded, the bridge wire is supported by the wire-passing portion and is kept in a taut state.

[0008] According to a preferred embodiment, three wire-passing grooves for routing wires are formed on the wire-passing portion, the three wire-passing grooves are arranged at intervals from each other, and the three wire-passing grooves are respectively used for routing bridge wires of different phases.

[0009] According to a preferred embodiment, the bottom of the wire groove is located above the end surface.

[0010] According to a preferred embodiment, the height of the wire passing portion protruding from the end surface is 0.5-1 mm, and the bottom of the wire passing groove is 0.3-0.6 mm higher than the end surface.

[0011] According to a preferred embodiment, the wire passing portion includes a first wire passing portion and a second wire passing portion. After the stator core is rounded, the first wire passing portion and the second wire passing portion are used to support the bridge wire and keep the bridge wire in a taut state.

[0012] According to a preferred embodiment, the first wire-passing portion and the second wire-passing portion are spaced apart from each other, and a recessed portion is formed between the first wire-passing portion and the second wire-passing portion, and after the stator core is rounded, the recessed portion is used to cooperate with a boss on a bottom mold of a die core to position the stator core.

[0013] According to a preferred embodiment, the shape of the recessed portion matches the shape of the boss on the die core bottom mold, and the recessed portion and the boss on the die core bottom mold are clearance-matched.

[0014] According to a preferred embodiment, the bottom surface of the recessed portion is flush with the end surface.

[0015] The stator of the present invention comprises the skeleton structure described in any technical solution of the present invention.

[0016] The motor of the present invention comprises the stator described in any technical solution of the present invention.

[0017] The skeleton structure, stator and motor provided by the present invention have at least the following beneficial technical effects:

[0018] The skeleton structure of the present invention comprises a plurality of skeleton monomers, wherein the plurality of skeleton monomers are plastic-coated on the stator core, wherein a wire-passing portion protruding from the end face is formed on the end face of the skeleton monomer for passing the bridge wire, and after the stator core is rounded, the bridge wire is supported by the wire-passing portion and kept in a taut state, and when the stator is not rounded, the bridge wire is routed through the wire-passing portion, and after the stator is rounded, since the wire-passing portion protrudes from the end face, the bridge wire is supported by the wire-passing portion protruding from the end face. Compared with the structure in the prior art in which the bridge wire groove is lower than the end face of the bridge wire, the wire-passing portion of the present invention can increase the circumference of the bridge wire, and when the total length of the bridge wire remains unchanged, the circumference is increased, and the bridge wire can be kept in a taut state, thereby preventing the bridge wire from loosening.

[0019] That is, the skeleton structure of the present invention supports the bridge wires through the wire-passing parts protruding from the end faces, thereby solving the technical problem in the prior art that the bridge wires become loose after the straight stator is rounded.

[0020] In addition, the preferred technical solution of the present invention can also produce the following technical effects:

[0021] A recessed portion is formed between the first wire-passing portion and the second wire-passing portion of the preferred technical solution of the present invention. After the stator core is rounded, the recessed portion is used to cooperate with the boss on the bottom mold of the die core to position the stator core, thereby reducing deformation of the stator core. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a three-dimensional schematic diagram of a skeleton monomer in the prior art;

[0024] Figure 2 is a front view of a prior art skeleton monomer;

[0025] Figure 3 It is a stereoscopic schematic diagram of a preferred embodiment of the skeleton monomer of the present invention;

[0026] Figure 4 It is a front view of a preferred embodiment of the skeleton monomer of the present invention;

[0027] Figure 5 It is a left view of a preferred embodiment of the skeleton monomer of the present invention;

[0028] Figure 6 It is a top view of a preferred embodiment of the backbone monomer of the present invention;

[0029] Figure 7 It is a schematic diagram of a preferred embodiment of the present invention in which the skeleton structure is plastic-coated on a straight stator core;

[0030] Figure 8 It is a schematic diagram of the winding of the straight stator core;

[0031] Fig. 9 It is a schematic diagram of a preferred embodiment after the stator is rounded;

[0032] Fig.10 It is a schematic diagram of the die core tooling and the stator after assembly.

[0033] In the figure: 1', end face of bridge wire; 11', bridge wire slot; 12', first fulcrum; 13', second fulcrum; 1, end face; 11, wire slot; 12, first wire-passing part; 13, second wire-passing part; 14, recessed part; 2, bridge wire; 3, stator core; 41, bottom mold of die core; 42, movable mold core. DETAILED DESCRIPTION

[0034] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0035] The following is attached to the instruction manual Figures 3 to 10 And embodiments 1 to 3 describe the skeleton structure, stator and motor of the present invention in detail.

[0036] Example 1

[0037] This embodiment describes the skeleton structure of the present invention in detail.

[0038] The skeleton structure of this embodiment includes a plurality of skeleton monomers, and the plurality of skeleton monomers are plastic-coated on the stator core 3, such as Figures 7 to 9 Preferably, the end face 1 of the skeleton monomer used for passing the bridge wire is formed with a wire passing portion protruding from the end face 1. After the stator core 3 is rounded, the wire passing portion supports the bridge wire 2 and keeps the bridge wire 2 in a taut state, as shown in FIG. Figures 3 to 6 shown.

[0039] The skeleton structure of the present embodiment is that when the stator is not rounded, the bridge wire 2 is routed through the wire passing portion. After the stator is rounded, since the wire passing portion protrudes from the end face 1, the bridge wire 2 is supported by the wire passing portion protruding from the end face 1. Compared with the structure in the prior art where the bridge wire groove 11' is lower than the bridge wire end face 1', the wire passing portion of the present embodiment can increase the circumference of the bridge wire 2. When the total length of the bridge wire 2 remains unchanged, the circumference is increased, and the bridge wire 2 can be tightened, thereby preventing the bridge wire 2 from loosening.

[0040] That is, the skeleton structure of this embodiment supports the bridge wire 2 through the wire portion protruding from the end surface 1, thereby solving the technical problem in the prior art that the bridge wire 2 becomes loose after the straight stator is rounded.

[0041] According to a preferred embodiment, three wire-passing grooves 11 for routing are formed on the wire-passing portion, the three wire-passing grooves 11 are arranged at intervals from each other, and the three wire-passing grooves 11 are respectively used for routing the bridge wires 2 of different phases, such as Figures 3 to 6 The preferred technical solution of this embodiment is provided with three wire-passing slots 11 for routing. The three wire-passing slots 11 can be used for routing the bridge wires 2 of different phases of the winding. On the one hand, they can fix the bridge wires 2, and on the other hand, they can prevent the winding phases from contacting each other and causing the problem of short circuit between phases.

[0042] According to a preferred embodiment, the bottom of the wire groove 11 is located above the end surface 1. Figures 3 to 6 As shown. Preferably, the height of the wire passing portion protruding from the end face 1 is 0.5 to 1 mm, and the bottom of the wire passing slot 11 is 0.3 to 0.6 mm higher than the end face 1. In the preferred technical solution of this embodiment, the bottom of the wire passing slot 11 is located above the end face 1, specifically, the bottom of the wire passing slot 11 is 0.3 to 0.6 mm higher than the end face 1, which can ensure that the bridge wire 2 is tightened after the stator is rounded to prevent the bridge wire 2 from becoming loose.

[0043] According to a preferred embodiment, the wire passing portion includes a first wire passing portion 12 and a second wire passing portion 13. After the stator core 3 is rounded, the first wire passing portion 12 and the second wire passing portion 13 are used to support the bridge wire 2 and keep the bridge wire 2 in a taut state. Figures 3 to 6 As shown. Figure 1 and Figure 3 , or contrast Figure 2 and Figure 4 It can be seen that the preferred technical solution of this embodiment is used to support the first wire-passing portion 12 and the second wire-passing portion 13 of the bridge wire 2, which are higher than the first fulcrum 12' and the second fulcrum 13' in the prior art. After the stator is circular, the circumference of the bridge wire 2 around the circular stator can be increased, so that the bridge wire 2 can be kept in a taut state.

[0044] According to a preferred embodiment, the first wire-passing portion 12 and the second wire-passing portion 13 are spaced apart from each other, and a recessed portion 14 is formed between the first wire-passing portion 12 and the second wire-passing portion 13. After the stator core 3 is rounded, the recessed portion 14 is used to cooperate with the boss on the die core bottom mold 41 to position the stator core 3. Since the stator core 3 has a poor roundness after the straight stator is rounded, it cannot be placed in the fixed core of the mold during injection molding. In order to ensure the roundness of the injection molded stator, a movable core production process is adopted, and a die core tooling is used to improve the roundness of the stator core 3. Fig.10 As shown, the die core tooling includes a die core bottom die 41 and a movable die core 42, which are respectively placed on both sides of the stator core 3. By pressing the movable die core 42 into the stator, the roundness of the stator core 3 can be improved. When pressing the movable die core 42, the recessed portion 14 is used to cooperate with the boss on the die core bottom die 41 to position the stator core 3, which can reduce the deformation of the stator core 3.

[0045] According to a preferred embodiment, the shape of the recessed portion 14 matches the shape of the boss on the die core bottom mold 41, and the recessed portion 14 is loosely matched with the boss on the die core bottom mold 41. The recessed portion 14 of the preferred technical solution of this embodiment is loosely matched with the boss on the die core bottom mold 41, which can accurately position the stator core 3 and reduce deformation of the stator core 3.

[0046] According to a preferred embodiment, the bottom surface of the recessed portion 14 is flush with the end surface 1. The recessed portion 14 of the preferred technical solution of this embodiment is located between the first line portion 12 and the second line portion 13, and the height of the first line portion 12 and the second line portion 13 protruding from the end surface 1 is 0.5 to 1 mm. It can be seen that the depth of the recessed portion 14 of this embodiment is 0.5 to 1 mm.

[0047] The skeleton structure of the present embodiment is characterized in that a wire-passing portion protruding from the end face 1 of the skeleton monomer is formed on the end face 1 for passing the bridge wire, thereby solving the problems of loosening of the bridge wire 2, crossing of the bridge wire 2, and insufficient insulation distance. At the same time, when the movable mold core 42 is pressed, the recessed portion 14 between the first wire-passing portion 12 and the second wire-passing portion 13 can accurately position the stator core 3, thereby reducing the abnormal deformation of the stator core 3 caused by the force applied to the stator core 3.

[0048] Example 2

[0049] This embodiment describes the stator of the present invention in detail.

[0050] The stator of this embodiment includes the skeleton structure of any technical solution in Embodiment 1. The skeleton structure is formed by directly injection molding the insulating material on the straight stator core 3, forming an integral plastic-coated skeleton for the stator core 3 to play an insulating role. The stator of this embodiment has the skeleton structure of any technical solution in Embodiment 1 formed on the stator core 3, and after the stator is rounded, the bridge wire 2 can be kept in a taut state, thereby preventing the bridge wire 2 from loosening.

[0051] Example 3

[0052] This embodiment describes the motor of the present invention in detail.

[0053] The motor of this embodiment includes the stator of any technical solution in Embodiment 2. The motor of this embodiment, because it includes the stator of any technical solution in Embodiment 2, can avoid abnormalities such as loosening of the bridge wire 2 after the stator is rounded, thereby improving product quality.

[0054] In the description of the present invention, it should be noted that, unless otherwise specified, "multiple" means two or more than two; the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the directions or positional relationships shown in the accompanying drawings, and 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 direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0055] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0056] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A skeleton structure, characterized in that: It comprises a plurality of skeleton monomers, wherein the plurality of skeleton monomers are coated on a stator core (3), wherein a wire-passing portion protruding from the end surface (1) of the skeleton monomer for passing a bridge wire is formed on the end surface (1), and after the stator core (3) is rounded, the bridge wire (2) is supported by the wire-passing portion and the bridge wire (2) is kept in a taut state; The wire-passing portion comprises a first wire-passing portion (12) and a second wire-passing portion (13). After the stator core (3) is rounded, The first wire-passing portion (12) and the second wire-passing portion (13) are used to support the bridge wire (2) and keep the bridge wire (2) in a taut state; The first wire-passing portion (12) and the second wire-passing portion (13) are arranged at intervals from each other, and a recessed portion (14) is formed between the first wire-passing portion (12) and the second wire-passing portion (13). After the stator core (3) is rounded, The recessed portion (14) is used to cooperate with the boss on the die core bottom die (41) to position the stator core (3).

2. The skeleton structure according to claim 1, characterized in that: Three wire-passing grooves (11) for routing wires are formed on the wire-passing portion. The three wire-passing grooves (11) are arranged at intervals from each other, and the three wire-passing grooves (11) are respectively used for routing bridge wires (2) of different phases.

3. The skeleton structure according to claim 2, characterized in that: The bottom of the wire groove (11) is located above the end surface (1).

4. The skeleton structure according to claim 3, characterized in that: The height of the wire-passing portion protruding from the end surface (1) is 0.5 to 1 mm, and the bottom of the wire-passing groove (11) is 0.3 to 0.6 mm higher than the end surface (1).

5. The skeleton structure according to claim 1, characterized in that: The shape of the recessed portion (14) matches the shape of the boss on the die core bottom mold (41), and the recessed portion (14) and the boss on the die core bottom mold (41) are clearance-matched.

6. The skeleton structure according to claim 1, characterized in that: The bottom surface of the recessed portion (14) is flush with the end surface (1).

7. A stator, characterized in that: The invention comprises the skeleton structure as claimed in any one of claims 1 to 6.

8. A motor, characterized in that: Comprising the stator as claimed in claim 7.

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