Insulation framework, stator block and motor

Abstract

The utility model relates to an insulating framework, a stator block and a motor. The insulating framework is provided with a winding groove for winding an enameled wire; at least one electric connecting piece is arranged on the insulating framework; the electric connecting piece is provided with at least one clamping piece, the clamping piece is provided with a spine part and an abutting part opposite to the tip end of the spine part, clamping positions of at least two sizes are formed between the spine part and the abutting part, and the clamping positions are used for being connected with enameled wires of corresponding wire diameters in an inserted mode. And the spine part is used for puncturing an insulating layer of the enameled wire and is in contact with a wire layer of the enameled wire so as to realize electric connection between the enameled wires with different wire diameters. The electric connecting piece is formed on the insulating framework and is provided with the clamping piece with the spine part, and the insulating layer is directly punctured by the spine part when the enamelled wires are clamped, so that the electric connection of the enamelled wires with different wire diameters is realized, the winding turn number requirement is met, the slot fullness rate is improved, the enamelled wires do not need to be connected through welding, and the cost is reduced. Therefore, the production efficiency of the motor stator is improved.

Description

Technical Field

[0001] This application relates to the technical field of motors, and particularly to an insulating skeleton, a stator segment, and a motor. Background Art

[0002] When winding the stator of a motor, the number of winding turns of the winding is usually set first, and then the winding is carried out. However, during the winding process, the following situations may occur: when using enameled wire with a thick wire diameter, due to the space limitation of the winding slot, it may not be possible to fully accommodate the enameled wire with the set number of turns; when using enameled wire with a thin wire diameter, the slot fill factor will be low. Therefore, the performance of the motor cannot reach the optimal level by using any of the above winding methods. Summary of the Utility Model

[0003] This application provides an insulating skeleton, a stator segment, and a motor, aiming to solve the problem of low motor performance in related technologies.

[0004] According to one aspect of this application, in one embodiment, an insulating skeleton is provided, including:

[0005] The insulating skeleton is formed with a winding slot for winding enameled wire;

[0006] At least one electrical connector is provided on the insulating skeleton; the electrical connector has at least one clamping member, the clamping member is provided with a spiked portion and an abutting portion oppositely arranged relative to the tip of the spiked portion, at least two sizes of clamping positions are formed between the spiked portion and the abutting portion, the clamping positions are used for inserting enameled wire with corresponding wire diameters, and the spiked portion is used to pierce the insulating layer of the enameled wire and contact the conductor layer of the enameled wire to achieve electrical connection between the enameled wires with different wire diameters.

[0007] In one embodiment, at least one spiked portion group is circumferentially arranged along the side surface of the abutting portion on the clamping member, the spiked portion group has a plurality of the spiked portions, and the spiked portions in the spiked portion group are sequentially arranged along the axial direction of the motor to form corresponding multiple clamping positions in the axial direction of the motor.

[0008] In one embodiment, the sizes of the clamping positions in the spiked portion group gradually decrease along the axial direction of the motor and in the direction close to the winding slot.

[0009] In one embodiment, the sizes of the clamping positions are different.

[0010] In one embodiment, the spiked portions within the same spiked portion group or within the same clamping member are electrically connected to each other.

[0011] In one embodiment, the electrical connector includes at least two clamping members arranged along the axial direction of the motor, and the clamping members are insulated from each other.

[0012] According to one aspect of the present application, in one embodiment, a stator segment is provided, including a core segment, the above-mentioned insulating skeleton sleeved on the core segment, and a winding wound on the insulating skeleton; the winding has enameled wires with at least two wire diameters, and the enameled wires are electrically connected through the clamping members.

[0013] In one embodiment, the winding has enameled wires with two wire diameters. In the direction from the inside to the outside of the winding groove, the wire diameters of the enameled wires of the winding are arranged in the order of from thick to thin or from thin to thick; the enameled wires are inserted into the clamping positions corresponding to the same group of spike portions, or into the clamping positions of different spike portion groups on the same clamping member.

[0014] In one embodiment, the electrical connection member has two of the clamping members, and the two clamping members are insulated from each other; the winding has enameled wires with two wire diameters. In the direction from the inside to the outside of the winding groove, the wire diameters of the enameled wires of the winding are arranged in the order of thick-thin-thick or thin-thick-thin; the enameled wires with the two wire diameters are inserted into the clamping positions on one of the clamping members during the first wire diameter switching, and into the clamping positions on the other clamping member during the second wire diameter switching.

[0015] According to one aspect of the present application, in one embodiment, a motor is provided, including a rotor and a stator formed by annularly splicing a plurality of the above-mentioned stator segments.

[0016] For the insulating skeleton, stator segment and motor according to the above embodiments, on the one hand, the winding is composed of enameled wires with two wire diameters. Through the reasonable matching of the enameled wires with two wire diameters, the slot fill factor can be improved while meeting the requirements of the number of winding turns, thereby improving the performance of the motor. On the other hand, since an electrical connection member is formed on the insulating skeleton, the electrical connection member has a clamping member with spike portions, and the insulating layer of the enameled wire is directly pierced by the spike portions while the enameled wire is clamped by the clamping member, so that the electrical connection of the enameled wires with different wire diameters is realized through the clamping member, and there is no need to weld the enameled wires, thereby improving the production efficiency of the motor stator. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of a stator segment in an embodiment of the present application.

[0018] Figure 2 It is a rear view schematic diagram of a stator segment in an embodiment of the present application.

[0019] Figure 3 It is a schematic structural diagram of a stator segment after removing the winding in an embodiment of the present application.

[0020] Figure 4 It is a schematic structural diagram of a clamping member in an embodiment of the present application.

[0021] Figure 5 Schematic cross-sectional view of the clamping part in the embodiment of the present application.

[0022] Figure 6 Schematic cross-sectional view of the enameled wire winding in the stator segment in the embodiment of the present application.

[0023] Figure 7 Another schematic cross-sectional view of the enameled wire winding in the stator segment in the embodiment of the present application.

[0024] Figure 8 Another schematic cross-sectional view of the enameled wire winding in the stator segment in the embodiment of the present application.

[0025] Figure 9 Schematic cross-sectional view of the motor stator in the embodiment of the present application.

[0026] Explanation of reference numerals:

[0027] 1 - stator segment; 2 - iron core segment; 3 - insulating skeleton; 4 - winding groove; 5 - electrical connector; 6 - clamping part; 60 - clamping position; 61 - spiked part; 62 - abutting part; 63 - spiked part group; 7 - winding; 70 - enameled wire; 8 - insulating part. Detailed implementation manners

[0028] The present application will be further described in detail below in conjunction with the accompanying drawings through specific implementation manners. Similar elements in different implementation manners adopt related similar element numbers. In the following implementation manners, many detailed descriptions are provided to enable a better understanding of the present application. However, those skilled in the art can easily recognize that some of the features can be omitted in different situations, or can be replaced by other elements, materials, or methods. In some cases, some operations related to the present application are not shown or described in the specification, which is to avoid the core part of the present application being overwhelmed by excessive descriptions. For those skilled in the art, it is not necessary to describe these related operations in detail, and they can fully understand the related operations based on the descriptions in the specification and general technical knowledge in the art.

[0029] In addition, the features, operations, or characteristics described in the specification can be combined in any appropriate manner to form various implementation manners, and the operation steps involved in each embodiment can also be reordered or adjusted in an obvious manner by those skilled in the art. Therefore, the specification and the drawings are only for clearly describing a certain embodiment, and do not mean to be the necessary composition and / or sequence.

[0030] The serial numbers assigned to the components in this article itself, such as "first", "second", etc., are only used to distinguish the described objects and do not have any sequential or technical meaning. And the "connection" and "coupling" mentioned in the present application, unless otherwise specified, both include direct and indirect connections (couplings).

[0031] To solve the problem of low motor performance caused by using single-gauge enameled wire in the existing technology, please refer to Figures 1-8 As shown, in the embodiment of the present application, a stator block 1 is provided, including an iron core block 2, an insulating skeleton 3 sleeved outside the iron core block 2, and a winding 7 wound around the insulating skeleton 3; the winding 7 has enameled wires 70 of at least two gauges, and the enameled wires 70 of different gauges are electrically connected through a clamping member 6.

[0032] Among them, please refer to Figures 1-5 , the insulating skeleton 3 is formed with a winding groove 4 for winding the enameled wire 70; at least one electrical connecting member 5 is arranged on the insulating skeleton 3; the electrical connecting member 5 has at least one clamping member 6, the clamping member 6 is provided with a spike portion 61 and an abutting portion 62 oppositely arranged with respect to the tip of the spike portion 61, at least two sizes of clamping positions 60 are formed between the spike portion 61 and the abutting portion 62, the clamping positions 60 are used for inserting the enameled wire 70 of the corresponding gauge, and the spike portion 61 is used for piercing the insulating layer of the enameled wire 70 and contacting the conductor layer of the enameled wire 70 to realize the electrical connection between the enameled wires 70 of different gauges.

[0033] In the embodiment of the present application, in order to increase the slot fill factor of the winding groove 4 while meeting the number of winding turns, the winding 7 may specifically include enameled wires 70 of at least two gauges, and each enameled wire 70 is wound in the winding groove 4 according to the volume of the winding groove 4 to form the winding 7. When winding the motor stator, the number of winding turns of the winding 7 is first set, and according to the enameled wires 70 of different gauges, different winding results may occur. For example, when the gauge is large, the volume of the winding groove 4 cannot accommodate the specified number of turns of the large-gauge enameled wire 70, and if the gauge is small, the slot fill factor will be low. In either case, the working performance of the motor will be affected. Therefore, in order to adapt to the number of winding turns and the volume of the winding groove 4, enameled wires 70 of at least two gauges can be used to connect in series to wind and form the winding 7. Specifically, the number of turns of the enameled wires 70 of different gauges can be dynamically adjusted according to the volume of the winding groove 4 and the number of winding turns, so as to improve the slot fill factor of the winding groove 4 while meeting the requirements of the number of winding turns, thereby improving the working performance of the motor.

[0034] In order to achieve electrical connection between the mutually separated enameled wires 70, in the embodiment of the present application, an electrical connector 5 is provided on the insulating skeleton 3. The electrical connector 5 itself can conduct electricity, and the electrical connection between enameled wires 70 with different wire diameters is achieved through the electrical connector 5. Among them, in order to connect the wire ends of the enameled wires 70, the electrical connector 5 has a clamping member 6. The function of the clamping member 6 is to clamp the enameled wires 70, so that the enameled wires 70 can form a fixed connection with the clamping member 6. In addition to the fixed connection, more importantly, it is also necessary to achieve the electrical connection between the enameled wires 70. The electrical connection between the enameled wires 70 uses the electrical connector 5 as a relay, and more specifically, uses the clamping member 6 as a relay to achieve the electrical connection, because the clamping member 6 can be made of a conductive material, so the electrical connection between enameled wires 70 with different wire diameters can be achieved through the clamping member 6.

[0035] According to the structural characteristics of the enameled wire 70 itself, that is, the wire layer located inside is coated with an insulating layer, so its outer surface does not directly conduct electricity and can only achieve electrical connection through the internal wire layer; therefore, in the embodiment of the present application, the clamping member 6 is also provided with a spike portion 61 and an abutting portion 62 disposed opposite to the spike portion 61. The space between the spike portion 61 and the abutting portion 62 forms a clamping position 60. The clamping position 60 has at least two sizes to adapt to at least two enameled wires 70 with corresponding wire diameters; the function of setting the spike portion 61 is that when the clamping member 6 clamps the enameled wire 70, the spike portion 61 simultaneously pierces the insulating layer of the enameled wire 70, so that the spike portion 61 can be directly connected to the internal wire layer, thereby achieving the electrical connection between enameled wires 70 with different wire diameters.

[0036] In the embodiment of the present application, the clamping member 6 forms a clamping position 60 between the abutting portion 62 and the spike portion 61. The function of the clamping position 60 is to insert the enameled wire 70, and the abutting portion 62 and the spike portion 61 clamp and connect the enameled wire 70 from both sides, thereby achieving the fixed connection between the enameled wire 70 and the clamping member 6.

[0037] In some alternative embodiments, to enhance the reliability of the connection of the enameled wire 70 and to accommodate the connection of enameled wires 70 with different wire diameters, at least one spike group 63 is circumferentially arranged along the side surface of the abutting portion 62 on the upper edge of the clamping member 6. The spike group 63 has a plurality of spikes 61, and the spikes 61 within the spike group 63 are arranged in sequence along the axial direction of the motor, so as to form corresponding multiple clamping positions 60 in the axial direction of the motor. By providing the spike group 63 which has a plurality of spikes 61, it is possible to achieve that the plurality of spikes 61 pierce the enameled wire 70, thereby enhancing the reliability of the contact between the wire layer of the enameled wire 70 and the spikes 61, and preventing the wire layer from detaching from the contact with the spikes 61. Moreover, when the wire diameter of the enameled wire 70 is relatively large, the insulating layer of the enameled wire 70 can also be pierced simultaneously by the plurality of spikes 61, so that the plurality of spikes 61 can all be in contact with the wire layer, ensuring the reliability of the electrical connection between the wire layer and the spikes 61. Herein, the axial direction of the motor refers to the axis direction of the motor corresponding to the stator formed by annularly fitting together the stator blocks 1 in the embodiments of the present application.

[0038] In some alternative embodiments, to adapt to the connection of enameled wires 70 with different wire diameters, the size of the clamping position 60 within the spike group 63 gradually decreases along the axial direction of the motor and in the direction close to the winding groove 4. In other words, the gap size corresponding to the clamping position 60, corresponding to the size of each spike 61, gradually increases along the axial direction of the motor in the direction close to the winding groove 4. The spikes 61 in the embodiments of the present application can have various sizes, and the wire diameters of the enameled wires 70 that can be clamped by the spikes 61 of different sizes are different; since the clamping position 60 is formed by the gap between the spike 61 and the abutting portion 62, and the enameled wire 70 is clamped through the clamping position 60, the larger the size of the spike 61, the smaller the gap between the spike 61 and the abutting portion 62, and the smaller the size of the enameled wire 70 that can be clamped. Arranging the spikes 61 to gradually increase in the direction close to the winding groove 4 along the axial direction of the motor means that the closer to the opening of the clamping member 6, the larger the wire diameter of the enameled wire 70 that can be clamped, which also conforms to the operation of inserting the enameled wire 70 into the clamping member 6 through the opening for clamping. Therefore, when two or more enameled wires 70 need to be clamped within the clamping position 60, they should be clamped into the clamping position 60 from small to large according to the wire diameter of the enameled wires 70, with the enameled wire 70 having a smaller wire diameter arranged closer to the bottom of the clamping member 6 and the enameled wire 70 having a larger wire diameter arranged closer to the opening of the clamping member 6.

[0039] In some alternative embodiments, to ensure the reliability of the clamping structure and to enhance the stability of the electrical connection at the same time, the spike 61 and the abutting portion 62 are integrally formed on the clamping member 6 directly. The clamping member 6 can be made of a metal conductor, such as aluminum alloy, copper alloy, iron alloy, etc.

[0040] In some alternative embodiments, the sizes of the respective clamping positions 60 are different. The clamping positions 60 referred to herein may be the clamping positions 60 at various positions of the clamping member 6; on the premise that the sizes of the respective clamping positions 60 are all different, the wire diameter types of the enameled wires 70 that can be accessed can be maximized, so as to adapt to more types of enameled wires 70.

[0041] In some alternative embodiments, in order to achieve the series connection of enameled wires 70 with different wire diameters, the spike portions 61 within the same spike portion group 63 or within the same clamping member 6 may be electrically connected to each other. That is to say, when the series connection of the enameled wires 70 is achieved through the clamping member 6, if the spike portions 61 within the same spike portion group 63 are electrically connected to each other, the insulation layer of the enameled wire 70 can be pierced and connected to the conductor layer based on the same spike portion group 63 within the same clamping member 6; if the spike portion groups 63 within the same clamping member 6 are electrically connected to each other, the insulation layer of the enameled wire 70 can be pierced based on any spike portion 61 within the same clamping member 6, and the conductor layer can be connected. That is to say, a plurality of clamping positions 60 may be provided on one clamping member 6. During the series connection process of the enameled wires 70, two enameled wires 70 can be connected through two clamping positions 60 corresponding to a group of spike portion groups 63, or one enameled wire 70 can be respectively connected through the clamping positions 60 corresponding to two groups of spike portion groups 63.

[0042] In some alternative embodiments, in order to achieve the series connection of three or more enameled wires 70 with different wire diameters, the electrical connector 5 may specifically include at least two clamping members 6 arranged along the axial direction of the motor, and the respective clamping members 6 are insulated from each other. By providing two or more clamping members 6, each clamping member 6 can separately achieve the series connection between two enameled wires 70. Specifically, two clamping members 6 can achieve the series connection between three enameled wires 70, and three clamping members 6 can achieve the series connection between four enameled wires 70, and so on. In the embodiments of the present application, the division of the clamping members 6 refers to the number of mutually insulated clamping members 6. There are no specific limitations on the actual spatial positions and connection relationships between the respective clamping members 6. As long as two clamping members 6 are insulated from each other, they can be regarded as separate clamping members 6. For example, a plurality of clamping members 6 can be overlapped and an insulating member 8 can be provided between the clamping members 6. Please refer to Figure 4 . The winding 7 is stuffed in the winding slot 4; the winding 7 is wound by series connection of at least two enameled wires 70, and the enameled wires 70 are electrically connected through the clamping member 6. Among them, the winding 7 is wound by series connection of at least two enameled wires 70 with different wire diameters. And these enameled wires 70 can be fixedly connected through the above-mentioned clamping member 6. At the same time, the insulation layer of the enameled wire 70 is pierced by the spike portion 61 provided on the clamping member 6, so that the conductor layer is in direct contact with the spike portion 61 to achieve electrical connection, thereby realizing the series connection between enameled wires 70 with different wire diameters.

[0043] In some alternative embodiments, the winding 7 has enameled wires 70 of two wire diameters. In the direction from the inside to the outside of the winding slot 4, the wire diameters of the enameled wires 70 of the winding 7 are in the order of from thick to thin or from thin to thick. The enameled wires 70 are inserted into the clamping positions 60 corresponding to the same set of spike portions 63, or are inserted into the clamping positions 60 of different sets of spike portions 63 on the same clamping member 6. That is to say, when winding in the winding slot 4, the enameled wires 70 can be sequentially wound in the winding slot 4 according to different wire diameters to form the winding 7. For example, the enameled wires 70 to be wound are a, b, and c respectively, and the wire diameter size relationship is a < b < c. When winding, the enameled wire a can be wound first, and after winding, the enameled wire b is wound outside the enameled wire a, and then the enameled wire c is wound after the enameled wire b to form the winding 7. Or, the enameled wire c can also be wound first, and after winding, the enameled wire b is wound outside the enameled wire a, and then the enameled wire a is wound outside the enameled wire b to form the winding 7, as Figure 6 and 7 shown. Then, in the wiring structure, please refer to Figure 5 , the enameled wires 70 can be inserted into the clamping positions 60 corresponding to the same set of spike portions 63 on the same clamping member 6, or are inserted into the clamping positions 60 of different sets of spike portions 63 on the same clamping member 6.

[0044] In some alternative embodiments, as Figure 8 shown, the winding 7 includes enameled wires 70 of two wire diameters, and in the direction from the inside to the outside of the winding slot 4, the wire diameters of the enameled wires 70 of the winding 7 are in the order of thick - thin - thick or thin - thick - thin. Correspondingly, the electrical connector 5 has two clamping members 6, and the two clamping members 6 are insulated from each other. The enameled wires 70 of the two wire diameters are inserted into the clamping positions 60 on one of the clamping members 6 during the first wire diameter switch, and are inserted into the clamping positions 60 on the other clamping member 6 during the second wire diameter switch. Specifically, taking the wire diameter order of the enameled wire 70 as thick - thin - thick as an example, the first wire diameter switch is from the thick wire diameter to the thin wire diameter. At this time, the thick - wire - diameter enameled wire 70 and the thin - wire - diameter enameled wire 70 are inserted into the clamping positions 60 on one of the clamping members 6 and form a series connection. The second wire diameter switch is from the thin wire diameter to the thick wire diameter. At this time, the thin - wire - diameter enameled wire 70 and the thick - wire - diameter enameled wire 70 are inserted into the clamping positions 60 on the other clamping member 6 and form a series connection.

[0045] In addition, when winding in the winding slot 4, the enameled wires 70 can also be mixed with each other in different wire diameters and wound in the winding slot 4 to form the winding 7. That is to say, the enameled wires 70 of different wire diameters can also be wound in a mixed way without specific restrictions on the winding order.

[0046] A stator segment provided by an embodiment of the present application, since an electrical connector 5 is formed on the insulating skeleton 3 of the iron core segment 2, the electrical connector 5 has a clamping member 6 with a spiked portion 61, and while the enameled wire 70 is clamped by the clamping member 6, the insulating layer is directly pierced by the spiked portion 61, so that the electrical connection of enameled wires 70 with different wire diameters is realized through the clamping member 6. While meeting the requirements of the number of winding turns and improving the slot fill factor, there is no need to connect the enameled wires 70 by welding, thereby improving the production efficiency of the motor stator.

[0047] In addition, please refer to Figure 9 , an embodiment of the present application also provides a motor, which includes a rotor and a stator formed by annularly splicing a plurality of the above-mentioned stator segments, and the structure of the stator is as Figure 9 shown.

[0048] The above uses specific examples to elaborate on the present invention, which is only used to help understand the present invention and is not intended to limit the present invention. For those skilled in the technical field to which the present invention belongs, according to the idea of the present invention, several simple deductions, deformations or substitutions can also be made.

Claims

1. An insulating skeleton, characterized in that: include: The insulating frame is formed with a winding groove for winding the enameled wire; At least one electrical connector is arranged on the insulating skeleton; the electrical connector has at least one clamping member, and a spike portion and an abutting portion arranged opposite to the tip of the spike portion are arranged on the clamping member, and at least two sizes of clamping positions are formed between the spike portion and the abutting portion, and the clamping positions are used to plug in enameled wires of corresponding wire diameters, and the spike portion is used to pierce the insulating layer of the enameled wire and contact the conductor layer of the enameled wire to achieve electrical connection between the enameled wires of different wire diameters.

2. The insulating frame according to claim 1, characterized in that: At least one spike portion group is arranged on the clamping member along the circumferential direction of the side surface of the abutting portion, and the spike portion group has a plurality of spike portions. The spike portions in the spike portion group are arranged in sequence along the axial direction of the motor to form a corresponding plurality of clamping positions in the axial direction of the motor.

3. The insulating frame according to claim 2, characterized in that: The size of the engaging position in the spike portion group gradually decreases along the axial direction of the motor and in the direction close to the winding groove.

4. The insulating frame according to claim 2, characterized in that: The sizes of the engaging positions are different.

5. The insulating skeleton according to any one of claims 2 to 4, characterized in that: The spike portions in the same spike portion group or in the same clamping member are connected to each other.

6. The insulating frame according to claim 5, characterized in that: The electrical connector includes at least two clamping parts arranged along the axial direction of the motor, and the clamping parts are insulated from each other.

7. A stator block, characterized in that: It comprises an iron core block, an insulating frame as described in any one of claims 1-6 sleeved on the iron core block, and a winding wound on the insulating frame; the winding has enameled wires of at least two wire diameters, and the enameled wires are electrically connected through the clamping piece.

8. The stator segment according to claim 7, characterized in that: The winding has enameled wires of two wire diameters, and the order of the wire diameters of the enameled wires of the winding is from thick to thin or from thin to thick from the inside to the outside of the winding groove; the enameled wires are inserted into the corresponding clamping positions of the same group of spike portions, or are inserted into the clamping positions of different spike portions on the same clamping part.

9. The stator segment according to claim 7, characterized in that: The electrical connector has two clips, and the two clips are insulated from each other; the winding has two kinds of enameled wires with different wire diameters, and the order of the wire diameters of the enameled wires of the winding from the inside to the outside of the winding groove is thick-thin-thick or thin-thick-thin; the enameled wires of the two wire diameters are plugged into the clipping position on one of the clips when the wire diameters are switched for the first time, and are plugged into the clipping position on the other clip when the wire diameters are switched for the second time.

10. A motor, characterized in that: It comprises a rotor and a stator formed by splicing together a number of stator segments as described in any one of claims 7 to 9 in a ring shape.

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