Stator and motor comprising same

Abstract

The utility model provides a stator and a motor comprising the same, and the stator comprises a housing; the stator monomers are positioned in the casing, are close to the inner circumferential surface of the casing and are arranged around the axis of the casing; one side, close to the casing, of each stator monomer is provided with two half grooves, and the two half grooves on the sides, close to each other, of two adjacent stator monomers jointly form a slot; the plurality of metal pins are positioned in the slots; the metal pins form circumferential extrusion force between two adjacent stator monomers and form radial extrusion force between the casing and the stator monomers so as to fix the casing and the stator monomers. According to the novel stator structure fixed by the metal pins, the preparation process of the stator can be simplified, the preparation time is shortened, and the preparation cost is reduced.

Description

Technical Field

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

[0002] A motor is an electromagnetic device that converts or transmits electrical energy based on the law of electromagnetic induction. The fixed part of the motor is called the stator, and its main function is to generate a rotating magnetic field.

[0003] The stator usually includes a stator unit and a housing, and a winding wire is arranged on the stator unit. In the existing stator structure, the stator units are usually welded by laser. Specifically, all stator units need to be welded into a stator assembly, and then the stator assembly is assembled into the housing by shrink fitting. However, the preparation process of the stator of this structure is complicated and time-consuming, and the laser welding equipment and heating equipment required for assembly are relatively expensive.

[0004] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the utility model, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0005] In view of this, the utility model provides a stator and a motor including the stator, so as to at least solve the problem that the current stator preparation process is complicated, time-consuming and costly.

[0006] One aspect of the utility model provides a stator, comprising:

[0007] chassis;

[0008] A plurality of stator monomers are located in the housing, close to the inner circumference of the housing, and arranged around the axis of the housing; the stator monomer has two half grooves on one side close to the housing, and the two half grooves on the mutually close sides of two adjacent stator monomers together form a slot;

[0009] A plurality of metal pins are located in the slots; the metal pins form a circumferential extrusion force between two adjacent stator monomers and a radial extrusion force between the housing and the stator monomer to fix the housing and the stator monomer.

[0010] Benefiting from the above-mentioned setting of the stator, by providing a new stator structure fixed by metal pins, the assembly of the stator unit, the metal pins and the casing can be completed by a simple pressing process, which can simplify the preparation process of the stator, reduce the preparation time, and reduce the preparation cost, while avoiding the dangers of laser welding and heat-shrinking processes in the prior art.

[0011] In some embodiments, the metal pin is in a strip shape, and includes at least one strip-shaped protrusion with a sharp cross-section, and the protrusion is in line contact with the housing or the stator unit.

[0012] Benefiting from the above-mentioned arrangement of the metal pin, circumferential extrusion force and radial extrusion force can be provided for the assembly of the stator unit, the metal pin and the housing, and a gap is left between the three to improve the heat dissipation effect of the stator.

[0013] In some embodiments, each of the metal pins includes three protrusions;

[0014] The two protrusions are in line contact with the two stator monomers constituting the slot where the metal pin is located, respectively, and form a circumferential extrusion force;

[0015] The other protrusion is in line contact with the inner circumference of the housing and forms a radial extrusion force.

[0016] Benefiting from the above-mentioned setting of the metal pin, while ensuring the circumferential extrusion pressure and the radial extrusion pressure, the heat dissipation effect of the stator is further improved, and the vibration noise caused by the contact between the stator unit, the metal pin and the casing is reduced.

[0017] In some embodiments, each of the metal pins comprises one protrusion;

[0018] The metal pin is in contact with the two stator monomer surfaces constituting the slot where the metal pin is located, respectively, and forms a circumferential extrusion force;

[0019] The protrusion is in line contact with the inner circumference of the housing and forms a radial extrusion force.

[0020] Benefiting from the above arrangement of the metal pin, the stability of the assembly of the stator unit, the metal pin and the casing is further improved.

[0021] In some embodiments, each of the metal pins comprises two protrusions;

[0022] The two protrusions are in line contact with the two stator monomers constituting the slot where the metal pin is located, respectively, and form a circumferential extrusion force;

[0023] The protrusion is in surface contact with the inner circumference of the housing and forms a radial extrusion force.

[0024] Benefiting from the above arrangement of the metal pins, the heat dissipation effect of the stator is further improved while ensuring assembly stability.

[0025] In some embodiments, there is a first gap between the sides of the two stator monomers that together constitute one slot and are close to each other;

[0026] A second gap is defined between the stator unit and the inner circumferential surface of the housing.

[0027] Thanks to the above arrangement of the stator unit, the metal pins and the housing, the heat dissipation effect of the stator can be improved.

[0028] In some embodiments, the side of the stator unit close to the housing has a first groove, and the first groove and the inner circumference of the housing form a first heat dissipation channel;

[0029] The first heat dissipation channel, the first gap and the second gap together constitute a heat dissipation channel.

[0030] Thanks to the above arrangement of the stator unit, the metal pins and the housing, the heat dissipation effect of the stator can be improved.

[0031] In some embodiments, the number of the metal pins is the same as the number of the stator cells.

[0032] Thanks to the above arrangement of the metal pins, the uniformity of the stator magnetic field distribution can be improved.

[0033] In some embodiments, the shape of the cross section of the metal pin matches the shape of the slot.

[0034] Due to the above arrangement of the metal pin, the stability of the assembly of the stator unit, the metal pin and the casing can be improved.

[0035] Another aspect of the utility model provides a motor, comprising the above-mentioned stator.

[0036] Benefiting from the above-mentioned setting of the motor, by providing a new stator structure fixed by metal pins, the assembly of the stator unit, metal pins and casing can be completed by a simple press-in process, which can simplify the preparation process of the motor, reduce the preparation time, and reduce the preparation cost, while avoiding the dangers of laser welding and heat-shrinking processes in the prior art.

[0037] It should be understood that the above general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present utility model, and together with the specification, are used to explain the principles of the present utility model. Obviously, the drawings described below are only some embodiments of the present utility model, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0039] Figure 1 A three-dimensional diagram showing a stator according to an embodiment of the utility model;

[0040] Figure 2 A three-dimensional diagram showing a stator monomer of an embodiment of the utility model;

[0041] Figure 3 A three-dimensional diagram showing a metal pin according to an embodiment of the utility model;

[0042] Figure 4 A cross-sectional view showing a metal pin according to an embodiment of the utility model;

[0043] Figure 5 Show Figure 4 A partial enlarged view of the raised portion of the middle metal pin;

[0044] Figure 6 A partial enlarged view showing the slot position of a stator according to an embodiment of the utility model;

[0045] Figure 7 A front view showing a stator monomer surrounded by an embodiment of the utility model;

[0046] Figure 8 An assembly diagram showing a stator unit and a metal pin according to an embodiment of the utility model;

[0047] Fig. 9 An assembly diagram of a stator unit, a metal pin and a housing according to an embodiment of the utility model is shown.

[0048] Reference numerals:

[0049] 10. Housing

[0050] 20 stator unit

[0051] 21 Half groove

[0052] 22 slots

[0053] 23 First groove

[0054] 30 Metal Pins

[0055] 31 Raised part

[0056] 40 First Gap

[0057] 50 Second Gap DETAILED DESCRIPTION

[0058] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein. Instead, these embodiments are provided so that the present invention will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their repeated description will be omitted.

[0059] The words "first", "second" and similar words used in the specific description do not indicate any order, quantity or importance, but are only used to distinguish different components. In addition, in the description of the present invention, the directions or positional relationships indicated by the terms "upper" and "lower" are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention.

[0060] It should be noted that, in the absence of conflict, the embodiments of the present utility model and features in different embodiments may be combined with each other.

[0061] Figure 1 A three-dimensional diagram showing a stator according to an embodiment of the utility model; Figure 2 A three-dimensional diagram showing a stator monomer of an embodiment of the utility model; Figure 3 A three-dimensional diagram showing a metal pin according to an embodiment of the utility model; Figure 4 A cross-sectional view showing a metal pin according to an embodiment of the utility model; Figure 5 Show Figure 4 A partial enlarged view of the raised portion of the middle metal pin; Figure 6 A partial enlarged view showing the slot position of a stator according to an embodiment of the utility model; Figure 7 A front view showing a stator monomer surrounded by an embodiment of the utility model; Figure 8 An assembly diagram showing a stator unit and a metal pin according to an embodiment of the utility model; Fig. 9 An assembly diagram of a stator unit, a metal pin and a housing according to an embodiment of the utility model is shown.

[0062] like Figures 1 to 9As shown, one aspect of the utility model provides a stator, comprising: a housing 10; a plurality of stator monomers 20, located in the housing 10 and close to the inner circumference of the housing 10, and arranged around the axis of the housing 10; the stator monomer 20 has two half grooves 21 on the side close to the housing 10, and the two half grooves 21 on the side close to each other of two adjacent stator monomers 20 together form a slot 22; a plurality of metal pins 30, located in the slot 22; the metal pins 30 form a circumferential extrusion force between two adjacent stator monomers 20, and form a radial extrusion force between the housing 10 and the stator monomer 20, so as to fix the housing 10 and the stator monomer 20. Benefiting from the above-mentioned setting of the stator, by providing a new stator structure fixed by the metal pins 30, the assembly of the stator monomer 20, the metal pins 30 and the housing 10 can be completed by adopting a simple pressing process, which can simplify the preparation process of the stator, reduce the preparation time, reduce the preparation cost, and avoid the dangers of laser welding and shrink fitting processes in the prior art.

[0063] In some embodiments, the metal pin 30 is in a strip shape, and includes at least one strip-shaped protrusion 31 with a sharp cross section, and the protrusion 31 is in line contact with the housing 10 or the stator unit 20. Benefiting from the above-mentioned arrangement of the metal pin 30, a circumferential extrusion force and a radial extrusion force can be provided for the assembly of the stator unit 20, the metal pin 30 and the housing 10, and a gap is left between the three to improve the heat dissipation effect of the stator.

[0064] In some embodiments, each metal pin 30 includes three protrusions 31; two protrusions 31 are in line contact with two stator monomers 20 constituting the slot 22 where the metal pin 30 is located, respectively, and form a circumferential extrusion force; another protrusion 31 is in line contact with the inner circumference of the housing 10, and forms a radial extrusion force. Specifically, a half groove 21 is provided on the edge of the stator monomer 20 close to the housing 10. When the metal pin 30 is inserted into the complete slot 22 formed by splicing the half grooves 21 of two adjacent stator monomers 20, since the outer diameter of the metal pin 30 at the protrusion 31 is slightly larger than the inner diameter of the slot 22 at the protrusion 31, the left and right protrusions 31 are tightly pressed against the inner surface of the complete slot 22 to achieve fixation. After a plurality of stator monomers 20 are spliced ​​and the metal pin 30 is inserted to form a circular stator assembly, the stator assembly is installed in the housing 10. At this time, for the same reason, the protrusion 31 of the metal pin 30 close to the housing 10 is tightly pressed against the inner circumferential surface of the housing 10 to achieve fixation. Benefiting from the above arrangement of the metal pin 30, while ensuring the circumferential extrusion force and the radial extrusion force, the heat dissipation effect of the stator is further improved, and the vibration noise caused by the contact between the stator unit 20, the metal pin 30 and the housing 10 is reduced.

[0065] In some embodiments, each metal pin 30 includes a protrusion 31; the metal pin 30 is in surface contact with two stator monomers 20 constituting the slot 22 where the metal pin 30 is located, and forms a circumferential extrusion force; the protrusion 31 is in line contact with the inner circumference of the housing 10, and forms a radial extrusion force. Benefiting from the above-mentioned arrangement of the metal pin 30, the stability of the assembly of the stator monomer 20, the metal pin 30 and the housing 10 is further improved.

[0066] In some embodiments, each metal pin 30 includes two protrusions 31; the two protrusions 31 are in line contact with two stator monomers 20 constituting the slots 22 where the metal pin 30 is located, and form a circumferential extrusion force; the protrusions 31 are in surface contact with the inner circumference of the housing 10, and form a radial extrusion force. Benefiting from the above arrangement of the metal pin 30, while ensuring assembly stability, the heat dissipation effect of the stator is further improved.

[0067] In some embodiments, each metal pin 30 may further include more than three protrusions 31. In this case, the number of protrusions 31 in line contact can be arbitrarily distributed between the two stator monomers 20 and the inner circumference of the housing 10, and the structure without line contact can be surface contact. Benefiting from the above-mentioned arrangement of the metal pin 30, while ensuring the heat dissipation effect of the stator, the stability of the assembly of the stator monomer 20, the metal pin 30 and the housing 10 is further improved, and more flexibility is provided for the preparation of the metal pin 30.

[0068] In some embodiments, a first gap 40 is provided between the sides of two stator monomers 20 that together form a slot 22, and a second gap 50 is provided between the stator monomer 20 and the inner circumference of the housing 10. The above arrangement of the stator monomer 20, the metal pin 30 and the housing 10 can improve the heat dissipation effect of the stator.

[0069] In some embodiments, the side of the stator monomer 20 close to the housing 10 has a first groove 23, and the first groove 23 and the inner circumference of the housing 10 form a first heat dissipation channel; the first heat dissipation channel, the first gap 40 and the second gap 50 together constitute a heat dissipation channel. Benefiting from the above-mentioned arrangement of the stator monomer 20, the metal pin 30 and the housing 10, the heat dissipation effect of the stator can be improved.

[0070] In some embodiments, the number of the metal pins 30 is the same as the number of the stator monomers 20. Thanks to the above arrangement of the metal pins 30, the uniformity of the stator magnetic field distribution can be improved.

[0071] In some embodiments, the number of metal pins 30 may be less than the number of stator units 20, but the metal pins 30 are evenly distributed around the axis of the housing 10. The above arrangement of the metal pins 30 can reduce the manufacturing cost while ensuring the uniformity of the stator magnetic field distribution.

[0072] In some embodiments, the cross-sectional shape of the metal pin 30 matches the shape of the slot 22. Thanks to the above arrangement of the metal pin 30, the assembly stability of the stator unit 20, the metal pin 30 and the housing 10 can be improved.

[0073] Based on the same inventive concept, another aspect of the utility model also provides a motor, including the above-mentioned stator. Benefiting from the above-mentioned setting of the motor, by providing a new stator structure fixed by a metal pin 30, the assembly of the stator unit 20, the metal pin 30 and the housing 10 can be completed by a simple press-in process, which can simplify the preparation process of the motor, reduce the preparation time, reduce the preparation cost, and avoid the dangers of laser welding and heat-shrinking processes in the prior art.

[0074] In summary, the stator of the utility model and the motor including the stator, by providing a new stator structure fixed by a metal pin 30, can complete the assembly of the stator unit 20, the metal pin 30 and the housing 10 by a simple pressing process, which can simplify the preparation process of the stator and the motor including the stator, reduce the preparation time, reduce the preparation cost, and avoid the dangers of laser welding and heat-shrink fitting processes in the prior art.

[0075] The above contents are further detailed descriptions of the present invention in combination with specific preferred implementations, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, multiple simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the scope of protection of the present invention.

Claims

1. A stator, characterized in that: include: Housing (10); A plurality of stator monomers (20) are located in the housing (10) and close to the inner circumference of the housing (10), and are arranged around the axis of the housing (10); the stator monomer (20) has two half grooves (21) on one side close to the housing (10), and the two half grooves (21) on the mutually close sides of two adjacent stator monomers (20) together form a slot (22); A plurality of metal pins (30) are located in the slots (22); the metal pins (30) form a circumferential extrusion force between two adjacent stator monomers (20), and form a radial extrusion force between the housing (10) and the stator monomer (20), so as to fix the housing (10) and the stator monomer (20).

2. The stator according to claim 1, characterized in that: The metal pin (30) is in a strip shape and comprises at least one strip-shaped protrusion (31) with a sharp cross section, and the protrusion (31) is in line contact with the housing (10) or the stator unit (20).

3. The stator according to claim 2, characterized in that: Each of the metal pins (30) comprises three protrusions (31); The two protrusions (31) are respectively in line contact with the two stator monomers (20) constituting the slot (22) where the metal pin (30) is located, and form a circumferential extrusion force; The other protrusion (31) is in linear contact with the inner circumference of the housing (10) and forms a radial extrusion force.

4. The stator according to claim 2, characterized in that: Each of the metal pins (30) comprises a protruding portion (31); The metal pin (30) is in surface contact with two stator monomers (20) constituting the slot (22) where the metal pin (30) is located, respectively, and forms a circumferential extrusion force; The protrusion (31) is in linear contact with the inner circumference of the housing (10) and forms a radial extrusion force.

5. The stator according to claim 2, characterized in that: Each of the metal pins (30) comprises two protrusions (31); The two protrusions (31) are respectively in line contact with the two stator monomers (20) constituting the slot (22) where the metal pin (30) is located, and form a circumferential extrusion force; The protrusion (31) is in surface contact with the inner circumference of the housing (10) and forms a radial extrusion force.

6. The stator according to claim 1, characterized in that: A first gap (40) is provided between the mutually adjacent sides of the two stator monomers (20) that together form a slot (22); A second gap (50) is defined between the stator unit (20) and the inner peripheral surface of the housing (10).

7. The stator according to claim 6, characterized in that The side surface of the stator monomer (20) close to the housing (10) has a first groove (23), and the first groove (23) and the inner peripheral surface of the housing (10) form a first heat dissipation channel; The first heat dissipation channel, the first gap (40) and the second gap (50) together constitute a heat dissipation channel.

8. The stator according to claim 1, characterized in that: The number of the metal pins (30) is the same as the number of the stator monomers (20).

9. The stator according to any one of claims 1 to 8, characterized in that: The cross-sectional shape of the metal pin (30) matches the shape of the slot (22).

10. A motor, characterized in that: Comprising a stator according to any one of claims 1 to 9.

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