Motor stator structure

Abstract

The utility model provides a motor stator structure, which comprises a stator iron core, an insulation framework, a stator winding and a winding outgoing line assembly, the stator winding comprises a first winding, a second winding and a third winding which are formed by winding an enameled wire, and the first winding, the second winding and the third winding are in triangular circuit connection. The winding lead-out wire assembly comprises a U-phase lead-out plate, a V-phase lead-out plate, a W-phase lead-out plate and an injection molding ring, the injection molding ring wraps the U-phase lead-out plate, the V-phase lead-out plate and the W-phase lead-out plate, the U-phase lead-out plate, the V-phase lead-out plate and the W-phase lead-out plate are arranged at intervals, the lead-out plates are all connected with terminals and insertion pieces extending out of the injection molding ring, and the terminals and the insertion pieces are connected with the winding lead-out wire assembly. And the injection molding ring is connected to the insulating framework through the connecting part. According to the motor stator structure, the leading-out wire ends of the stator winding are reduced, complex circuit connection is avoided, electric leakage and short circuit are prevented, and the stator production efficiency is improved.

Description

Technical Field

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

[0002] With the increasing requirements for energy conservation and environmental protection, motors as key power sources must also meet the standards of high efficiency and low energy consumption. The advantages of brushless DC motors, such as low noise, long life, no spark interference, and convenient centralized control, fully meet these requirements. As its speed regulation technology becomes increasingly mature and its cost performance becomes higher and higher, its structural manufacturing process must also be improved accordingly. A brushless motor is a motor without carbon brushes and commutators. It drives the rotor to rotate by controlling the current in the stator winding through an electronic controller. It uses a set of electronic equipment to sense the position of the permanent magnet poles through Hall elements or coil back electromotive force. Based on this perception, it uses electronic circuits to switch the direction of the current in the coil in a timely manner to ensure that the magnetic force in the correct direction is generated to drive the motor. Due to the lack of carbon brush friction, brushless motors have a longer life, higher efficiency, and lower noise. The application of integrated brushless motors is becoming more and more extensive, and the simplicity of the products and the requirements for operational stability are becoming higher and higher. At present, due to the complex connection of multiple lead-out wires on the stator winding on the motor stator, there is a risk of leakage short circuit, resulting in low production efficiency of the motor stator, thereby affecting the overall installation efficiency of the motor. Utility Model Content

[0003] The technical problem to be solved by the utility model is that the connection of multiple lead wires on the motor stator is complicated, and there is a risk of leakage short circuit. In order to overcome the defects of the above prior art, the utility model provides a motor stator structure.

[0004] The utility model provides a motor stator structure, comprising a stator core, an insulating frame, a stator winding and a winding lead-out wire assembly, wherein the insulating frame is fixedly mounted on the stator core, the stator winding is wound on the insulating frame, the winding lead-out wire assembly is mounted on the insulating frame and is electrically connected to the stator winding, the stator winding comprises a first winding, a second winding and a third winding formed by winding an enameled wire, the tail end of the first winding is connected to the head end of the second winding through a first through-group cable, the tail end of the second winding is connected to the head end of the third winding through a second through-group cable, the head end of the third winding is connected to the head end of the first winding through a third through-group cable, the winding lead-out wire assembly comprises a U-phase lead-out plate, a V-phase lead-out plate, a W-phase lead-out plate and an injection molding ring, the injection molding ring covers the U-phase lead-out plate , V-phase lead-out plate and W-phase lead-out plate, the U-phase lead-out plate, V-phase lead-out plate and W-phase lead-out plate are arranged at intervals with each other; the U-phase lead-out plate is connected with a first terminal and a first plug-in extending from the injection molding ring, the first terminal is electrically connected to the first over-group cable, and the first plug-in is used to be electrically connected to the U-phase connecting end of the external controller; the V-phase lead-out plate is connected with a second terminal and a second plug-in extending from the injection molding ring, the second terminal is electrically connected to the second over-group cable, and the second plug-in is used to be electrically connected to the V-phase connecting end of the external controller; the W-phase lead-out plate is connected with a third terminal and a third plug-in extending from the injection molding ring, the third terminal is electrically connected to the third over-group cable, and the third plug-in is used to be electrically connected to the W-phase connecting end of the external controller; the injection molding ring is connected to the insulating skeleton through a connecting portion.

[0005] Compared with the prior art, the motor stator structure of the present application has the following advantages: the stator winding is formed by winding a first winding, a second winding and a third winding through an enameled wire, the lead wire heads of the stator winding are reduced, and complex circuit connections are avoided; by setting a winding lead wire assembly, three lead plates are injection-molded and coated in an injection-molded ring and are arranged at intervals from each other, so as to reduce the exposure of the lead plates and avoid leakage short circuits; the terminals are connected to the cable group, and the plug-in is connected to the external controller to connect the circuit and facilitate wiring; by setting a connecting part, the injection-molded ring is conveniently installed on the insulating frame, thereby improving the installation reliability of the injection-molded ring.

[0006] In a possible embodiment, the connecting portion includes a plurality of legs, and the plurality of legs are fixedly connected to the injection molding ring along the circumferential direction. The legs are provided with positioning holes, and the insulating frame is provided with a plurality of positioning columns matching the positioning holes, and the positioning columns are inserted into the positioning holes.

[0007] Compared with the prior art, the above technical solution can position the injection molding ring for installation, facilitate the installation of the injection molding ring, and improve the installation efficiency.

[0008] In a possible implementation manner, the positioning posts are inserted into the positioning holes and are welded to each other.

[0009] Compared with the prior art, the above technical solution can fix the injection molding ring on the insulating frame, thereby improving the installation reliability of the injection molding ring.

[0010] In a possible implementation manner, the first terminal, the second terminal, and the third terminal are all provided with a wire clamping groove.

[0011] Compared with the prior art, the above technical solution can enable the cable to be clamped into the cable clamping groove, thereby improving the connection reliability between the terminal and the cable.

[0012] In a possible implementation manner, the first winding, the second winding and the third winding are each composed of a plurality of coils connected in parallel.

[0013] Compared with the prior art, the above technical solution can reduce the resistance value of each phase winding.

[0014] In a possible embodiment, the U-phase lead-out plate, the V-phase lead-out plate and the W-phase lead-out plate are all metal open rings with a multi-bending structure, the U-phase lead-out plate is located on the inner side of the V-phase lead-out plate, the W-phase lead-out plate is located on the outer side of the V-phase lead-out plate, and the U-phase lead-out plate, the V-phase lead-out plate and the W-phase lead-out plate are all arranged to extend vertically.

[0015] Compared with the prior art, the above technical solution can reduce the radial width of the injection molding ring.

[0016] In a possible implementation manner, a reinforcing rib is provided at the bending portion of the metal open ring.

[0017] Compared with the prior art, the above technical solution can improve the structural strength of the metal open ring.

[0018] In a possible implementation manner, the first winding, the second winding and the third winding are each composed of a plurality of coils connected in series.

[0019] Compared with the prior art, the above technical solution can increase the resistance value of each phase winding.

[0020] In a possible implementation manner, the U-phase lead plate, the V-phase lead plate and the W-phase lead plate are all metal open rings with an arc-shaped structure, and the U-phase lead plate, the V-phase lead plate and the W-phase lead plate are all extended in the radial direction.

[0021] Compared with the prior art, the above technical solution can reduce the axial height of the injection ring.

[0022] In a possible embodiment, a ground wire lead-out plate is further included, the middle portion of the ground wire lead-out plate is enclosed in the injection molding ring, both ends of the ground wire lead-out plate extend out of the injection molding ring, one end of the ground wire lead-out plate is in contact with the stator core, and the other end of the ground wire lead-out plate is electrically connected to the ground wire connection end of the external controller.

[0023] Compared with the prior art, the above technical solution can ground the motor stator and improve the safety of the electrical appliance. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The structure of the first embodiment of the present invention is shown in FIG. Figure 1 ;

[0025] Figure 2 The structure of the first embodiment of the present invention is shown in FIG. Figure 2 ;

[0026] Figure 3 The structure of the first embodiment of the present invention is shown in FIG. Figure 3 ;

[0027] Figure 4 The structure of the first embodiment of the present invention is shown in FIG. Figure 4 ;

[0028] Figure 5 The wiring diagram of the first embodiment of the present invention is shown in FIG. Figure 1 ;

[0029] Figure 6 The wiring diagram of the first embodiment of the present invention is shown in FIG. Figure 2 ;

[0030] Figure 7 This is a schematic diagram of the structure of the second embodiment of the present utility model. Figure 1 ;

[0031] Figure 8 This is a schematic diagram of the structure of the second embodiment of the present utility model. Figure 2 ;

[0032] Fig. 9 The wiring diagram of the second embodiment of the present utility model is shown in FIG. Figure 1 ;

[0033] Fig.10 The wiring diagram of the second embodiment of the present utility model is shown in FIG. Figure 2 ;

[0034] Description of reference numerals:

[0035] 1. Stator core; 2. Insulation frame; 21. Positioning column; 22. Avoidance groove; 3. Stator winding; 31. First winding; 32. Second winding; 33. Third winding; 34. Wire package; 35. First cable group; 36. Second cable group; 37. Third cable group; 4. Winding lead wire assembly; 41. U phase lead plate; 411. First terminal; 412. First plug; 42. V phase lead plate; 421. Second terminal; 422. Second plug; 43. W phase lead plate; 431. Third terminal; 432. Third plug; 44. Injection ring; 45. Wire slot; 46. Reinforcement rib; 5. Connecting part; 51. Support foot; 511. Positioning hole; 6. Ground lead plate. DETAILED DESCRIPTION

[0036] First, those skilled in the art should understand that these implementations are only used to explain the technical principles of the embodiments of the present application, and are not intended to limit the protection scope of the embodiments of the present application. Those skilled in the art can make adjustments to them as needed to adapt to specific application scenarios.

[0037] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0038] In the embodiments of the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0039] Currently, the motor stator has a complicated connection with multiple lead wires of the stator winding, which poses a risk of leakage and short circuit, resulting in low production efficiency of the motor stator, thus affecting the overall installation efficiency of the motor.

[0040] The present application is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0041] Embodiment 1

[0042] See also Figures 1 to 6The present application embodiment discloses a motor stator structure, including a stator core 1, an insulating frame 2, a stator winding 3 and a winding lead-out wire assembly 4, wherein the stator core 1 is a nine-slot core, the insulating frame 2 is fixedly mounted on the stator core 1, the stator winding 3 is wound on the insulating frame 2, the winding lead-out wire assembly 4 is mounted on the insulating frame 2 and is electrically connected to the stator winding 3, the stator winding 3 includes a first winding 31, a second winding 32 and a third winding 33 formed by winding an enameled wire, the first winding 3 The tail end of the second winding 32 is connected to the head end of the third winding 33 through the first cable 35, the tail end of the second winding 32 is connected to the head end of the third winding 33 through the second cable 36, and the head end of the third winding 33 is connected to the head end of the first winding 31 through the third cable 37, that is, the first winding 31, the second winding 32 and the third winding 33 are connected in a triangle circuit, and the winding lead wire assembly 4 includes a U-phase lead plate 41, a V-phase lead plate 42, a W-phase lead plate 43 and an injection molding ring 44, and the injection molding ring 44 includes The U-phase lead-out plate 41, the V-phase lead-out plate 42 and the W-phase lead-out plate 43 are covered, and the U-phase lead-out plate 41, the V-phase lead-out plate 42 and the W-phase lead-out plate 43 are arranged at intervals from each other; the U-phase lead-out plate 41 is integrally connected with a first terminal 411 and a first plug 412 extending from the injection molding ring 44, the first terminal 411 is electrically connected to the first group cable 35, and the first plug 412 is used to be electrically connected to the U-phase connection end of the external controller; the V-phase lead-out plate 42 is integrally connected with a second terminal 411 extending from the injection molding ring 44 Terminal 421 and a second plug 422, the second terminal 421 is electrically connected to the second cable group 36, and the second plug 422 is used to be electrically connected to the V-phase connection end of the external controller; the W-phase lead-out plate 43 is integrally connected with a third terminal 431 and a third plug 432 extending from the injection molding ring 44, the third terminal 431 is electrically connected to the third cable group 37, and the third plug 432 is used to be electrically connected to the W-phase connection end of the external controller; the injection molding ring 44 is connected to the insulating frame 2 through the connecting portion 5.

[0043] As can be known from the above, the stator winding 3 is formed by an enameled wire winding to form a first winding 31, a second winding 32 and a third winding 33, thereby reducing the lead wire heads of the stator winding 3 and avoiding complicated circuit connections. By setting a winding lead wire assembly 4, three lead plates are injection molded and coated in an injection molding ring 44 and are spaced apart from each other to reduce exposure of the lead plates and avoid leakage short circuits. The terminals are connected to the cable group, and the plug is connected to the external controller to connect the circuit and facilitate wiring. By setting a connecting portion 5, the injection molding ring 44 is conveniently installed on the insulating frame 2, thereby improving the installation reliability of the injection molding ring 44.

[0044] Continue to see Figure 1 and Figure 3In this embodiment, the connecting portion 5 includes a plurality of legs 51, and the plurality of legs 51 are integrally connected to the injection molding ring 44 along the circumferential direction. The legs 51 are provided with positioning holes 511, and the insulating frame 2 is provided with a plurality of positioning columns 21 matching the positioning holes 511, and the positioning columns 21 are inserted into the positioning holes 511, and the positioning columns 21 are inserted into the positioning holes 511 and welded to each other.

[0045] Continue to see Figure 5 and Figure 6 In this embodiment, the first winding 31, the second winding 32 and the third winding 33 are each composed of three coils 34 connected in parallel.

[0046] Continue to see Figure 2 and Figure 4 In this embodiment, the U-phase lead plate 41, the V-phase lead plate 42 and the W-phase lead plate 43 are all metal open loops with multiple bending structures, the U-phase lead plate 41 is located on the inner side of the V-phase lead plate 42, the W-phase lead plate 43 is located on the outer side of the V-phase lead plate 42, the U-phase lead plate 41, the V-phase lead plate 42 and the W-phase lead plate 43 are all extended vertically, and the bending parts of the metal open loops are provided with reinforcing ribs 46. The first plug-in sheet 412, the second plug-in sheet 422 and the third plug-in sheet 432 are all extended vertically.

[0047] Continue to see Figure 2 and Figure 4 In this embodiment, the number of the first terminal 411 , the second terminal 421 , and the third terminal 431 are all three, and the first terminal 411 , the second terminal 421 , and the third terminal 431 are all provided with a wire clamping groove 45 .

[0048] Continue to see Figure 1 , Figure 2 and Figure 4 In this embodiment, the motor stator structure also includes a ground wire lead-out plate 6, the middle part of the ground wire lead-out plate 6 is covered in the injection molding ring 44, and both ends of the ground wire lead-out plate 6 extend out of the injection molding ring 44. One end of the ground wire lead-out plate 6 is in contact with the stator core 1, and the other end of the ground wire lead-out plate 6 is electrically connected to the ground wire connection end of the external controller.

[0049] Continue to see Figure 1 and Figure 2 In this embodiment, the insulating frame 2 is provided with an avoidance groove 22 for avoiding the first terminal 411 , the second terminal 421 , and the third terminal 431 .

[0050] Embodiment 2

[0051] See also Figures 7 to 10The difference between this embodiment and the first embodiment is that the first winding 31, the second winding 32 and the third winding 33 are each composed of three coils 34 connected in series, the U-phase lead plate 41, the V-phase lead plate 42 and the W-phase lead plate 43 are all metal open rings with arc structures, and the U-phase lead plate 41, the V-phase lead plate 42 and the W-phase lead plate 43 are all extended in the radial direction. The first plug-in sheet 412, the second plug-in sheet 422 and the third plug-in sheet 432 are all extended in the radial direction.

[0052] In the description of the embodiments of the present application, it should be noted that in the description of the present application, terms such as "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is only for the convenience of description, and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present application.

[0053] In the description of the present application, the description with reference to the terms "one embodiment", "some embodiments", "in the present embodiment", "specific example", or "some examples" etc. means that the specific features, mechanisms, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, mechanisms, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0054] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A motor stator structure, comprising a stator core (1), an insulating frame (2), a stator winding (3) and a winding lead wire assembly (4), wherein the insulating frame (2) is fixedly mounted on the stator core (1), the stator winding (3) is wound on the insulating frame (2), and the winding lead wire assembly (4) is mounted on the insulating frame (2) and electrically connected to the stator winding (3), characterized in that: The stator winding (3) comprises a first winding (31), a second winding (32) and a third winding (33) formed by winding an enameled wire, the tail end of the first winding (31) is connected to the head end of the second winding (32) via a first through-group cable (35), the tail end of the second winding (32) is connected to the head end of the third winding (33) via a second through-group cable (36), and the head end of the third winding (33) is connected to the first winding (31). The head end of the winding lead wire assembly (4) is connected via a third cable (37), the winding lead wire assembly (4) comprises a U-phase lead plate (41), a V-phase lead plate (42), a W-phase lead plate (43) and an injection molding ring (44), the injection molding ring (44) covers the U-phase lead plate (41), the V-phase lead plate (42) and the W-phase lead plate (43), and the U-phase lead plate (41), the V-phase lead plate (42) and the W-phase lead plate (43) are arranged at intervals from each other; The U-phase lead-out plate (41) is connected to a first terminal (411) and a first plug-in piece (412) extending from the injection molding ring (44), wherein the first terminal (411) is electrically connected to the first cable (35), and the first plug-in piece (412) is used to be electrically connected to the U-phase connection end of an external controller; The V-phase lead-out plate (42) is connected to a second terminal (421) and a second plug-in sheet (422) extending from the injection molding ring (44), the second terminal (421) is electrically connected to the second cable group (36), and the second plug-in sheet (422) is used to be electrically connected to the V-phase connection end of an external controller; The W-phase lead-out plate (43) is connected to a third terminal (431) and a third plug-in piece (432) extending from the injection molding ring (44); the third terminal (431) is electrically connected to the third cable (37); and the third plug-in piece (432) is used to be electrically connected to the W-phase connection end of an external controller; The injection molding ring (44) is connected to the insulating frame (2) via a connecting portion (5).

2. The motor stator structure according to claim 1, characterized in that: The connecting portion (5) comprises a plurality of supporting legs (51), the plurality of supporting legs (51) being fixedly connected to the injection molding ring (44) along the circumferential direction, the supporting legs (51) being provided with positioning holes (511), the insulating frame (2) being provided with a plurality of positioning columns (21) matching the positioning holes (511), the positioning columns (21) being inserted into the positioning holes (511).

3. The motor stator structure according to claim 2, characterized in that: The positioning columns (21) are inserted into the positioning holes (511) and are welded to each other.

4. The motor stator structure according to claim 1, characterized in that: The first terminal (411), the second terminal (421), and the third terminal (431) are all provided with a wire clamping groove (45).

5. The motor stator structure according to claim 1, characterized in that: The first winding (31), the second winding (32) and the third winding (33) are each composed of a plurality of coils (34) connected in parallel.

6. The motor stator structure according to claim 5, characterized in that: The U-phase lead-out plate (41), the V-phase lead-out plate (42) and the W-phase lead-out plate (43) are all metal open rings with a multi-bending structure; the U-phase lead-out plate (41) is located on the inner side of the V-phase lead-out plate (42), the W-phase lead-out plate (43) is located on the outer side of the V-phase lead-out plate (42), and the U-phase lead-out plate (41), the V-phase lead-out plate (42) and the W-phase lead-out plate (43) are all arranged to extend vertically.

7. The motor stator structure according to claim 6, characterized in that: A reinforcing rib (46) is provided at the bending position of the metal open ring.

8. The motor stator structure according to claim 1, characterized in that: The first winding (31), the second winding (32) and the third winding (33) are each composed of a plurality of coils (34) connected in series.

9. The motor stator structure according to claim 8, characterized in that: The U-phase lead-out plate (41), the V-phase lead-out plate (42) and the W-phase lead-out plate (43) are all metal open rings with arc-shaped structures, and the U-phase lead-out plate (41), the V-phase lead-out plate (42) and the W-phase lead-out plate (43) are all arranged to extend radially.

10. The motor stator structure according to claim 1, characterized in that: It also includes a ground wire lead-out plate (6), the middle part of which is enclosed in the injection molding ring (44), and both ends of the ground wire lead-out plate (6) extend out of the injection molding ring (44), one end of the ground wire lead-out plate (6) contacts the stator core (1), and the other end of the ground wire lead-out plate (6) is electrically connected to the ground wire connection end of the external controller.

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