Motor stator structure and motor

Abstract

The utility model relates to the technical field of motors, and provides a motor stator structure, which comprises a stator iron core, an iron core circular ring and an insulating framework, the stator core comprises a first circular ring part and a plurality of tooth parts mounted on the inner circle of the first circular ring part, and the tooth parts are provided with first mounting parts; the iron core circular ring comprises a second circular ring part and a second mounting part arranged on the outer circle of the second circular ring part; and the first mounting part and the second mounting part are embedded in shape, so that the inner circle of the stator core has no notch, and the insulating framework is mounted on the stator core for winding. According to the motor stator structure provided by the utility model, after winding of the stator is completed, a stator core without a notch is formed through the first mounting part and the second mounting part which can be embedded in shape, so that the cogging torque and the torque pulsation of the motor are effectively reduced, and the overall practicability of the motor is improved.

Description

Technical Field

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

[0002] The integral stator core structure currently using the inner winding method will have slots. The permanent magnets of the permanent magnet motor and the teeth of the stator core interact to produce tooth slot torque. The tooth slot torque will cause torque pulsation of the permanent magnet motor. Torque pulsation will also cause the motor to vibrate and make noise. When the frequency of the pulsating torque is consistent with the current resonant frequency, resonance will occur, which will seriously affect the positioning accuracy and performance of the motor. Utility Model Content

[0003] In order to solve the deficiencies existing in the above-mentioned prior art, the utility model provides a motor stator structure, including a stator core, a core ring and an insulating frame; the stator core includes a first annular portion and a plurality of tooth portions installed on the inner circle of the first annular portion, and the tooth portion is provided with a first mounting portion; the core ring includes a second annular portion and a second mounting portion arranged on the outer circle of the second annular portion; the first mounting portion and the second mounting portion are fitted in shape so that the inner circle of the stator core is formed without a notch, and the insulating frame is installed on the stator core for winding.

[0004] Furthermore, the first mounting portion is a groove at the bottom end of the tooth portion, and the second mounting portion is a protrusion on the outer circle of the core ring.

[0005] Further, the shape of the groove is hemispherical, and the shape of the protrusion is hemispherical to match the groove.

[0006] Furthermore, the shape of the groove is a triangle, and the shape of the protrusion is a triangle that matches the groove.

[0007] Furthermore, the first mounting portion is the bottom end of the tooth portion, and the second mounting portion is a groove on the outer circle of the core ring.

[0008] Furthermore, the first mounting portion is a protrusion arranged at the bottom end of the tooth portion, and the second mounting portion is a groove on the outer circle of the core ring.

[0009] Furthermore, the protrusion is a trapezoidal protrusion connected to the bottom end of the tooth portion, the lower base of the trapezoidal protrusion is fixed to the bottom edge of the tooth portion, the upper base of the trapezoidal protrusion is arranged in a direction away from the stator core tooth portion, and the second mounting portion is a groove in which the outer circle of the core ring matches the trapezoidal protrusion.

[0010] Furthermore, the trapezoidal protrusion is an isosceles trapezoid.

[0011] Furthermore, the first mounting portion and the second mounting portion are fixed by gluing.

[0012] The utility model also provides a motor, comprising the motor stator structure as described in any of the above embodiments.

[0013] Based on the above, compared with the prior art, the utility model provides a motor stator structure, which, after the stator is wound, forms a stator core without a slot through a first mounting part and a second mounting part whose shapes can be interlocked, thereby effectively reducing the cogging torque and torque pulsation of the motor and improving the overall practicality of the motor.

[0014] Other features and beneficial effects of the utility model will be described in the subsequent description, and partly become apparent from the description, or understood by practicing the utility model. The purpose and other beneficial effects of the utility model can be achieved and obtained by the structures specifically pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. The positional relationships described in the drawings in the following description are based on the directions of the components shown in the diagrams unless otherwise specified.

[0016] Figure 1 A schematic diagram of the structure of the motor stator structure provided in the first embodiment of the utility model;

[0017] Figure 2 A schematic structural diagram of the motor stator structure from another perspective provided in the first embodiment of the utility model;

[0018] Figure 3 A schematic structural diagram of the motor stator structure from another perspective provided in the first embodiment of the utility model;

[0019] Figure 4 A front structural diagram of a motor stator structure provided in Embodiment 2 of the present utility model;

[0020] Figure 5 A schematic diagram of the front structure of the stator core provided in the second embodiment of the utility model;

[0021] Figure 6 A schematic diagram of the structure of a stator core provided in Embodiment 2 of the present utility model;

[0022] Figure 7 This is a front structural schematic diagram of the iron core ring provided in the second embodiment of the utility model;

[0023] Figure 8 A schematic structural diagram of the iron core ring from another perspective provided in the second embodiment of the utility model;

[0024] Fig. 9 A schematic diagram of the front structure of the stator core provided in the second embodiment of the utility model;

[0025] Fig.10 This is a front structural schematic diagram of the iron core ring provided in the second embodiment of the utility model;

[0026] Fig.11 This is a front structural schematic diagram of the stator core provided in the third embodiment of the utility model;

[0027] Fig.12 This is a front structural schematic diagram of the core ring provided in the third embodiment of the utility model;

[0028] Fig.13 This is a front structural schematic diagram of the stator core provided in the third embodiment of the utility model;

[0029] Fig.14 This is a schematic diagram of the front structure of the stator core provided in Example 3 of the utility model.

[0030] Reference numerals:

[0031] Stator core 10 Core ring 20 Insulation frame 30

[0032] First annular portion 11 tooth portion 12 first mounting portion 121

[0033] Second annular portion 21 Second mounting portion 211 Groove 40

[0034] Raised 50 DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all of the embodiments; the technical features designed in different implementation modes of the utility model described below can be combined with each other as long as they do not conflict with each other; based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0036] In the description of the present invention, it should be noted that all terms (including technical terms and scientific terms) used in the present invention have the same meanings as those generally understood by ordinary technicians in the field to which the present invention belongs, and cannot be understood as limitations on the present invention; it should be further understood that the terms used in the present invention should be understood to have meanings consistent with the meanings of these terms in the context of this specification and in the relevant fields, and should not be understood in an idealized or overly formal sense, unless explicitly defined in this utility model.

[0037] Embodiment 1

[0038] The utility model provides a motor stator structure, such as Figure 1 As shown, it includes a stator core 10, a core ring 20 and an insulating frame 30; Figure 2 and Figure 3 As shown, the stator core 10 includes a first annular portion 11 and a plurality of teeth 12 installed on the inner circle of the first annular portion 11, and the teeth 12 are provided with a first mounting portion 121; the core ring 20 includes a second annular portion 21 and a second mounting portion 211 provided on the outer circle of the second annular portion 21; the first mounting portion 121 and the second mounting portion 211 are fitted in shape so that the inner circle of the stator core 10 is formed without a notch, and the insulating frame 30 is installed on the stator core 10 for winding.

[0039] Specifically, after the stator winding is completed, the utility model forms a stator core 10 without a slot through the first mounting portion 121 and the second mounting portion 211 which can be interlocked in shape, which effectively reduces the cogging torque and torque pulsation of the motor and improves the overall practicality of the motor.

[0040] Embodiment 2

[0041] In this embodiment, Figure 2 and Figure 4 As shown, the first mounting portion 121 is a groove 40 of the inner circular tooth portion 12 of the stator core 10 , and the second mounting portion 211 is a protrusion 50 on the outer circle of the core ring 20 .

[0042] Specifically, the motor stator structure includes a stator core 10, a core ring 20 and an insulating frame 30. The tooth portion 12 of the inner circle of the stator core 10 has a groove 40, and the outer circle of the core ring 20 has a protrusion 50. The protrusion 50 of the core ring 20 is partially embedded and combined with the groove 40 of the stator core 10 to form a complete stator core 10. The core ring 20 and the stator core 10 are reinforced and fixed by means of slot tight fitting, screws or glue bonding. After the combination, the inner circle of the stator core 10 forms a structure without a notch, and the insulating frame 30 is installed on the stator core 10 for winding.

[0043] In one embodiment, if Figure 5, Figure 6 , Figure 7 and Figure 8 As shown, the shape of the groove 40 is hemispherical, and the shape of the protrusion 50 is hemispherical to match the groove 40 .

[0044] In one embodiment, if Fig. 9 and Fig.10 As shown, the shape of the groove 40 is a triangle, and the shape of the protrusion 50 is a triangle that matches the groove 40 .

[0045] Optionally, the shape of the groove 40 can be a triangle, a hemispherical shape, or an irregular shape with an opening, and the protrusion 50 can be a triangle protrusion, a hemispherical protrusion, or an irregular shape protrusion adapted to the groove 40 .

[0046] Embodiment 3

[0047] In this embodiment, the first mounting portion 121 is the tooth portion 12 of the stator core 10 , and a protrusion 50 of different shapes may also be provided at the bottom end of the tooth portion 12 . The second mounting portion 211 is the groove 40 of the outer circle of the core ring 20 .

[0048] Specifically, the motor stator structure includes a stator core 10, a core ring 20 and an insulating frame 30. The core ring 20 has a groove 40 on its outer circle. The groove 40 on the core ring 20 is engaged with the tooth portion 12 of the stator core 10 or the protrusion 50 at the bottom end of the tooth portion 12 of the stator core 10 to form a complete stator core 10. The core ring 20 and the stator core 10 are reinforced and fixed by means of slot tight fitting, screws or glue bonding. After assembly, the inner circle of the stator core 10 forms a structure without a notch. The insulating frame 30 is installed on the stator core 10 for winding.

[0049] In one embodiment, if Fig.11 , Fig.12 and Fig.13 As shown, the first mounting portion 121 is the tooth portion 12 , and the second mounting portion 211 is the groove 40 on the outer circle of the core ring 20 , and the groove 40 is matched with the bottom end of the tooth portion 12 .

[0050] In one embodiment, if Fig.14 As shown, the protrusion 50 is a trapezoidal protrusion connected to the bottom end of the tooth portion 12, the lower base of the trapezoidal protrusion is fixed to the bottom edge of the tooth portion 12, and the upper base of the trapezoidal protrusion is arranged in a direction away from the tooth portion 12 of the stator core 10, and the second mounting portion 211 is a groove 40 in which the outer circle of the core ring 20 matches the trapezoidal protrusion.

[0051] Preferably, the trapezoidal protrusion is an isosceles trapezoid. It should be noted that it is not limited to an isosceles trapezoid, but can also be a right-angled trapezoid, as well as trapezoids with other side length ratios. The slopes of the two sides of the isosceles trapezoid can be smoothly aligned with the groove 40 of the core ring 20, making installation easy.

[0052] Preferably, the bottom of the trapezoidal protrusion has the same width as the bottom edge of the tooth portion 12. The bottom of the trapezoidal protrusion has the same width as the bottom edge of the tooth portion 12, so that the two can reduce the processing steps during the processing, similar to direct integral molding. In addition, the same bottom edge width makes the overall area of ​​the trapezoidal protrusion larger, and when the motor vibrates violently, the trapezoidal protrusion is not easy to break, making the notch-free structure more stable.

[0053] Embodiment 4

[0054] The utility model also provides a motor, which comprises the motor stator structure as described in any of the above embodiments.

[0055] Specifically, after the stator winding is completed, the utility model forms a stator core 10 without a slot through the first mounting portion 121 and the second mounting portion 211 which can be interlocked in shape, which effectively reduces the cogging torque and torque pulsation of the motor and improves the overall practicality of the motor.

[0056] In addition, those skilled in the art should understand that, although there are many problems in the prior art, each embodiment or technical solution of the utility model can be improved in only one or several aspects, without having to solve all the technical problems listed in the prior art or background technology at the same time. Those skilled in the art should understand that the content not mentioned in a claim should not be used as a limitation on the claim.

[0057] Although the terms such as stator core, core ring, insulating frame, first annular portion, tooth portion, first mounting portion, second annular portion, second mounting portion, groove and protrusion are used more frequently in this article, the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model; the terms "first", "second", etc. (if any) in the description and claims of the embodiment of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A motor stator structure, characterized in that: It includes a stator core, a core ring and an insulating frame; The stator core comprises a first annular portion and a plurality of teeth mounted on the inner circle of the first annular portion, wherein the teeth are provided with a first mounting portion; the core annular portion comprises a second annular portion and a second mounting portion disposed on the outer circle of the second annular portion; The first mounting portion and the second mounting portion are interlocked in shape, so that the inner circle of the stator core is formed without a notch, and the insulating frame is installed on the stator core for winding.

2. The motor stator structure according to claim 1, characterized in that: The first mounting portion is a groove at the bottom end of the tooth portion, and the second mounting portion is a protrusion on the outer circle of the core ring.

3. The motor stator structure according to claim 2, characterized in that: The groove is in a hemispherical shape, and the protrusion is in a hemispherical shape matching the groove.

4. The motor stator structure according to claim 2, characterized in that: The groove is in the shape of a triangle, and the protrusion is in the shape of a triangle matching the groove.

5. The motor stator structure according to claim 1, characterized in that: The first mounting portion is the bottom end of the tooth portion, and the second mounting portion is a groove on the outer circle of the core ring.

6. The motor stator structure according to claim 1, characterized in that: The first mounting portion is a protrusion arranged at the bottom end of the tooth portion, and the second mounting portion is a groove on the outer circle of the core ring.

7. The motor stator structure according to claim 6, characterized in that: The protrusion is a trapezoidal protrusion connected to the bottom end of the tooth portion, the lower base of the trapezoidal protrusion is fixed to the bottom edge of the tooth portion, the upper base of the trapezoidal protrusion is arranged in a direction away from the stator core tooth portion, and the second mounting portion is a groove in which the outer circle of the core ring matches the trapezoidal protrusion.

8. The motor stator structure according to claim 7, characterized in that: The trapezoidal protrusion is an isosceles trapezoid.

9. The motor stator structure according to claim 1, characterized in that: The first mounting portion and the second mounting portion are fixed by gluing.

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

Images