Plastic-coated stator core structure and motor

Abstract

The utility model discloses a plastic-coated stator iron core structure and a motor. The plastic-coated stator iron core structure comprises an iron core and an insulating framework. A plurality of winding grooves are formed in the inner circumferential wall of the iron core and distributed in the circumferential direction of the axis of the iron core. The insulation framework is integrally formed on the iron core in an injection molding mode and wraps the iron core, a plurality of positioning columns are arranged on the upper end face of the insulation framework, the positioning columns are distributed in the circumferential direction of the axis of the iron core, each positioning column is located between every two adjacent winding grooves, and each positioning column is provided with a pin hole used for fixing a pin. The insulating framework is directly injection-molded on the iron core, so that the coil winding is prevented from directly contacting with the iron core through a gap to cause electric leakage; and the pin holes are used for mounting pins, so that the coil winding can be wound on the pins conveniently, and the coil winding can be wound more firmly.

Description

Technical Field

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

[0002] The stator core is an important part of the motor magnetic circuit. It, together with the rotor core and the air gap between the stator and the rotor, forms the complete magnetic circuit of the motor. The existing stator core is usually covered with a plastic upper cover and a plastic lower cover to form an insulating frame, which can wrap the core to achieve an insulating effect. However, there is a gap between the upper cover and the lower cover of the current insulating frame after they are covered, and the copper wire is easy to contact the core and cause leakage. In addition, the current insulating frame has a single structure and the coil winding is easy to loosen. Utility Model Content

[0003] The utility model aims to solve one of the technical problems in the related art at least to a certain extent. To this end, the utility model provides a plastic-coated stator core structure and a motor.

[0004] In a first aspect, an embodiment of the utility model provides a plastic-coated stator core structure, the plastic-coated stator core structure comprising:

[0005] An iron core, wherein the inner peripheral wall of the iron core is provided with a plurality of winding grooves, and the plurality of winding grooves are circumferentially distributed around the axis of the iron core;

[0006] An insulating skeleton is integrally injection molded on the iron core, the insulating skeleton wraps the iron core, a plurality of positioning columns are provided on the upper end surface of the insulating skeleton, the plurality of positioning columns are circumferentially distributed around the axis of the iron core, the positioning columns are located between two adjacent winding grooves, and the positioning columns are provided with pin holes for fixing pins.

[0007] According to the plastic-coated stator core structure of the embodiment of the utility model, at least the following technical effects are achieved: the insulating skeleton is directly injection molded on the core to prevent the coil winding from directly contacting the core through the gap and causing leakage; the pin holes are used to install pins to facilitate winding the coil winding on the pins to make the coil winding more tightly wound.

[0008] According to some embodiments of the present invention, the diameter of the pin hole gradually decreases from top to bottom.

[0009] According to some embodiments of the utility model, a plurality of first reinforcing ribs are provided on the upper end surface of the insulating frame, the plurality of first reinforcing ribs correspond one-to-one to the plurality of positioning columns, and the first reinforcing ribs are connected to the positioning columns on one side close to the core axis.

[0010] According to some embodiments of the present invention, the uppermost end of the first reinforcing rib is lower than the uppermost end of the positioning column.

[0011] According to some embodiments of the utility model, a plurality of limit blocks are provided on the outer side of the insulating skeleton, and the plurality of limit blocks are circumferentially distributed around the axis of the iron core, the uppermost end of the limit block is higher than the upper end surface of the insulating skeleton, and the lowermost end of the limit block is lower than the lower end surface of the insulating skeleton.

[0012] According to some embodiments of the utility model, a first stop block is provided on the upper end surface of the insulating frame, the first stop block is located between the limit block and the positioning column, and a first limit groove is formed between the first stop block and the limit block.

[0013] According to some embodiments of the present invention, a side of the stop block close to the limit block is gradually inclined from bottom to top towards a direction close to the core axis.

[0014] According to some embodiments of the utility model, the upper end surface of the insulating frame is provided with a through hole, and the iron core is exposed in the through hole.

[0015] According to some embodiments of the utility model, a connecting column is provided on the upper end surface of the insulating frame, and the connecting column is provided with the through hole.

[0016] In a second aspect, an embodiment of the utility model further provides a motor, comprising a plastic-coated stator core structure according to the embodiment of the first aspect of the utility model.

[0017] The motor according to the embodiment of the utility model has at least the following technical effects: the motor adopts the plastic-coated stator core structure, and the insulating skeleton is directly injection molded on the core to prevent the coil winding from directly contacting the core through the gap and causing leakage; the pin hole is used to install the pin, so that the coil winding can be wound on the pin to make the coil winding more tightly.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the 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 easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0020] Figure 1 It is a structural schematic diagram of a plastic-coated stator core structure of some embodiments of the utility model;

[0021] Figure 2 It is an exploded view of the plastic-coated stator core structure of some embodiments of the utility model;

[0022] Figure 3 is a top view of a plastic-coated stator core structure of some embodiments of the utility model;

[0023] Figure 4 It is a structural schematic diagram from another angle of the plastic-coated stator core structure of some embodiments of the utility model.

[0024] Figure Number:

[0025] Iron core 100, winding slot 110;

[0026] Insulating frame 200 , positioning column 210 , pin hole 211 , first reinforcing rib 220 , limiting block 230 , first stop block 240 , first limiting groove 250 , connecting column 260 , through hole 261 , coil winding 270 , second stop block 280 , second limiting groove 290 . DETAILED DESCRIPTION

[0027] The embodiments of the present invention are described in detail below, and 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 only used to explain the present invention, and cannot be understood as limiting the present invention.

[0028] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations 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 orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0029] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0030] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0031] The following is a further description of the embodiments of the present invention in conjunction with the accompanying drawings.

[0032] According to some embodiments of the present invention, referring to Figures 1 to 3The structure of the plastic-coated stator core 100 includes an iron core 100 and an insulating frame 200. The inner peripheral wall of the iron core 100 is provided with a plurality of winding grooves 110, and the winding grooves 110 penetrate the iron core 100 in the up-down direction, and the plurality of winding grooves 110 are circumferentially distributed around the axis of the iron core 100. The iron core 100 is semicircular, and the axis of the iron core 100 is a straight line passing through the center of the circle of the iron core 100 and extending in the up-down direction. The insulating frame 200 is integrally injection molded on the iron core 100, and the insulating frame 200 wraps the iron core 100. The inner surface of the insulating frame 200 is attached to the outer surface of the iron core 100, that is, the inner peripheral wall of the insulating frame 200 also has winding grooves 110, and the insulating frame 200 can isolate the coil winding 270 and the iron core 100 from each other, and the coil winding 270 is wound back and forth between the winding grooves 110 and the outer peripheral wall of the insulating frame 200. The upper end surface of the insulating frame 200 is provided with a plurality of positioning columns 210, which are circumferentially distributed around the axis of the core 100, and the positioning columns 210 are located between two adjacent winding grooves 110. The positioning columns 210 are provided with pin holes 211 for fixing pins.

[0033] It is understandable that the insulating frame 200 is directly injection molded on the iron core 100 to avoid the insulating frame 200 having to cover the upper and lower covers, which would cause a gap and allow the coil winding 270 to directly contact the iron core 100 through the gap and cause leakage. When assembling the motor assembly, the pin hole 211 is installed with a pin, and the pin is connected to the circuit board. Since the pin is conductive, the pin can be electrically connected to the bridge wire of the coil winding 270, and at the same time, the bridge wire of the coil winding 270 is wound around the positioning column 210 and the pin to make the coil winding 270 more tightly wound.

[0034] According to some embodiments of the present invention, referring to Figure 1 and Figure 2 The diameter of the pin hole 211 gradually decreases from top to bottom, so that when the pin is inserted into the pin hole 211, it can play a role in positioning and tightening the pin.

[0035] According to some embodiments of the present invention, referring to Figures 1 to 3 The upper end surface of the insulating frame 200 is provided with a plurality of first reinforcing ribs 220, and the plurality of first reinforcing ribs 220 correspond to the plurality of positioning posts 210 one by one. The first reinforcing ribs 220 are connected to the positioning posts 210 on the side close to the axis of the iron core 100. The first reinforcing ribs 220 can enhance the connection strength between the positioning posts 210 and the insulating frame 200, and prevent the positioning posts 210 from being bent or broken due to excessive winding of the coil winding 270. Figure 3 The first reinforcing rib 220 can isolate the two coil windings 270 from each other to prevent the coil windings 270 from deviating.

[0036] According to some embodiments of the present invention, referring to Figure 1 and Figure 2 The uppermost end of the first reinforcing rib 220 is lower than the uppermost end of the positioning column 210 , so that the insertion pin can be inserted into the insertion pin hole 211 without being blocked by the first reinforcing rib 220 .

[0037] According to some embodiments of the present invention, referring to Figure 1 and Figure 2 A plurality of stop blocks 230 are disposed on the outer side of the insulating frame 200, and the plurality of stop blocks 230 are circumferentially distributed around the axis of the iron core 100, and the uppermost end of the stop block 230 is higher than the upper end surface of the insulating frame 200, and the lowermost end of the stop block 230 is lower than the lower end surface of the insulating frame 200. The stop block 230 can play a role in positioning and assembling with other motor components.

[0038] According to some embodiments of the present invention, referring to Figure 1 and Figure 2 A first stop block 240 is provided on the upper end surface of the insulating frame 200 . The first stop block 240 is located between the limit block 230 and the positioning column 210 . A first limit groove 250 is formed between the first stop block 240 and the limit block 230 , so that the circuit board can be inserted into the first limit groove 250 .

[0039] According to some embodiments of the present invention, referring to Figure 1 and Figure 2 The side of the stop block close to the limiting block 230 is gradually inclined from bottom to top toward the direction close to the axis of the iron core 100, so as to guide the circuit board to be inserted into the first limiting groove 250.

[0040] According to some embodiments of the present invention, referring to Figure 1 and Figure 2 The upper end surface of the insulating frame 200 is provided with a through hole 261, and the iron core 100 is exposed in the through hole 261, so that the iron core 100 can be connected with other electronic components. Further, the upper end surface of the insulating frame 200 is provided with a connecting column 260, and the connecting column 260 is provided with a through hole 261. The connecting column 260 can block the coil winding 270 to prevent the coil winding 270 from contacting the iron core 100 through the through hole 261.

[0041] According to some embodiments of the present invention, referring to Figure 4 A second stop block 280 is provided on the lower end surface of the insulating frame 200 , and the second stop block 280 is located on the side of the limit block 230 close to the axis of the iron core 100 . A second limit groove 290 is formed between the second stop block 280 and the limit block 230 to facilitate the circuit board to be inserted into the second limit groove 290 .

[0042] In the description of this specification, the description with reference to the term "some embodiments" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0043] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A plastic coated stator core structure, characterized in that: include: An iron core (100), wherein the inner peripheral wall of the iron core (100) is provided with a plurality of winding grooves (110), and the plurality of winding grooves (110) are circumferentially distributed around the axis of the iron core (100); An insulating frame (200) is integrally injection-molded on the iron core (100), the insulating frame (200) wraps the iron core (100), a plurality of positioning columns (210) are provided on the upper end surface of the insulating frame (200), the plurality of positioning columns (210) are circumferentially distributed around the axis of the iron core (100), the positioning columns (210) are located between two adjacent winding grooves (110), and the positioning columns (210) are provided with pin holes (211) for fixing pins.

2. The plastic-coated stator core structure according to claim 1, characterized in that: The diameter of the pin insertion hole (211) gradually decreases from top to bottom.

3. The plastic-coated stator core structure according to claim 1, characterized in that: The upper end surface of the insulating frame (200) is provided with a plurality of first reinforcing ribs (220), the plurality of first reinforcing ribs (220) correspond one-to-one to the plurality of positioning columns (210), and the first reinforcing ribs (220) are connected to the positioning columns (210) on one side close to the axis of the iron core (100).

4. The plastic-coated stator core structure according to claim 3, characterized in that: The uppermost end of the first reinforcing rib (220) is lower than the uppermost end of the positioning column (210).

5. The plastic-coated stator core structure according to claim 1, characterized in that: A plurality of limit blocks (230) are provided on the outer side of the insulating frame (200), and the plurality of limit blocks (230) are circumferentially distributed around the axis of the iron core (100), the uppermost end of the limit block (230) is higher than the upper end surface of the insulating frame (200), and the lowermost end of the limit block (230) is lower than the lower end surface of the insulating frame (200).

6. The plastic-coated stator core structure according to claim 5, characterized in that: The upper end surface of the insulating frame (200) is provided with a first stop block (240), the first stop block (240) is located between the limit block (230) and the positioning column (210), and a first limit groove (250) is formed between the first stop block (240) and the limit block (230).

7. The plastic-coated stator core structure according to claim 6, characterized in that: The side of the stop block close to the limit block (230) is gradually inclined from bottom to top towards the direction close to the axis of the iron core (100).

8. The plastic-coated stator core structure according to claim 1, characterized in that: The upper end surface of the insulating frame (200) is provided with a through hole (261), and the iron core (100) is exposed in the through hole (261).

9. The plastic-coated stator core structure according to claim 8, characterized in that: The upper end surface of the insulating frame (200) is provided with a connecting column (260), and the connecting column (260) is provided with the through hole (261).

10. A motor, characterized in that: The invention comprises a plastic-coated stator core structure as claimed in any one of claims 1 to 9.

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