Motor stator assembly

Abstract

The utility model provides a motor stator assembly, and belongs to the technical field of machinery. The problem of poor stability in the prior art is solved. The motor stator assembly comprises a stator core, a stator winding, a plurality of insulating frameworks and a collector ring, and further comprises a protective cover, the stator core is cylindrical, the plurality of insulating frameworks are uniformly distributed and connected to the stator core in the circumferential direction, the outer side of each insulating framework is a first connecting part used for winding the stator winding, and a second connecting part used for winding the collector ring is arranged on the outer side of each insulating framework. The inner side of the insulating framework is provided with a connecting part II, the protective cover, the collector ring and the insulating framework are arranged up and down along the axial direction of the stator core, the side part of the protective cover is provided with a clasp I extending downwards, the side part of the collector ring is provided with a clasp II extending downwards, and the clasp I is positioned at the side part of the clasp II. The motor stator assembly is high in stability.

Description

Technical Field

[0001] The utility model belongs to the technical field of machinery and relates to a motor stator component. Background Art

[0002] The motor stator assembly is an important component of the motor, mainly composed of stator core, stator winding, insulation material and slip ring.

[0003] The stator core is made of laminated silicon steel sheets, and its inner surface is slotted for stator winding. The main function of silicon steel sheets is to reduce the magnetic resistance of the entire system and participate in the operation of the magnetic circuit.

[0004] The stator core of the motor is precisely processed and assembled to ensure a close fit with the motor housing or other components to provide stable support and fixation.

[0005] The stator winding consists of a number of coils that are wound in the slots of the stator core in a certain pattern. When current passes through the stator winding, a magnetic field is generated that interacts with the permanent magnets on the rotor to drive the rotor to rotate.

[0006] The winding method and material selection of the stator winding have an important impact on the performance of the motor. Different winding methods and material selections will affect the motor's efficiency, power factor, temperature rise and other performance indicators.

[0007] Insulation materials are used to isolate the stator winding and stator core to prevent electrical short circuits between them. The selection and use of insulation materials are crucial to the safety and reliability of the motor. Common insulation materials include insulation paper, insulation paint, etc. These materials have excellent insulation properties and high temperature resistance, which can ensure the stable operation of the motor under long-term and high-load working conditions.

[0008] The motor slip ring is a component that connects the wires in the motor winding to the outside of the motor through a terminal block fixed on the end slip ring. Its main function is to transfer current when the motor is running to ensure the normal and stable operation of the motor. In addition, when the motor starts and stops, the slip ring can also reduce overcurrent and protect the winding to prevent the winding from burning due to failure to discharge electromagnetic energy in time.

[0009] Motor slip rings are usually made of highly conductive materials, such as copper or aluminum, to ensure efficient current transmission. Its design needs to consider multiple factors, including motor power, current size, winding layout, etc., to ensure that it can withstand various operating conditions and current shocks when the motor is running.

[0010] Due to the importance of the slip ring, special attention needs to be paid to the protection of the conductive material of the slip ring, especially to protect its structure from being damaged, prevent the mixing of impurities and improve the insulation strength between it and other metal structures on the motor, which is of great significance.

[0011] In the existing motor stator assembly, the stator core, stator winding, insulation material and slip ring are simply fixed by fasteners. This connection method requires sufficient space to be reserved in the entire motor stator assembly for fastener connection, resulting in a non-compact structure. Moreover, as the use time increases, the connection stability of the fasteners will also weaken, and the stability is relatively poor. Summary of the invention

[0012] The purpose of the utility model is to provide a motor stator assembly with compact structure and high connection stability in view of the above problems existing in the prior art.

[0013] The purpose of the utility model can be achieved through the following technical solutions:

[0014] A motor stator assembly comprises a stator core, a stator winding, an insulating frame and a collector ring, and is characterized in that it also comprises a protective cover, the stator core is cylindrical, the number of the insulating frames is several, and the several insulating frames are evenly connected to the stator core in the circumferential direction, the outer side of the insulating frame is a connecting portion 1 for winding the stator winding, the inner side of the insulating frame has a connecting portion 2, the protective cover, the collector ring and the insulating frame are arranged up and down along the axial direction of the stator core, the side of the protective cover has a hook 1 extending downward, the side of the collector ring has a hook 2 extending downward, the hook 1 is located at the side of the hook 2, the hook 1 can be connected to the connecting portion 2 of the insulating frame corresponding to it, and the hook 2 can be connected to the connecting portion 2 of the insulating frame corresponding to it.

[0015] The stator assembly of the motor creatively arranges the stator core, stator winding, insulating frame, collector ring and protective cover from bottom to top in the axial direction of the stator core. Since the insulating frame is stably fixed to the stator core, the collector ring is stably connected to the second connection part of the corresponding insulating frame through the second hook thereon, and the protective cover is stably connected to the second connection part of the corresponding insulating frame through the first hook thereon.

[0016] At the same time, the connection portion on the outside of the insulating frame can provide a stable connection for the stator winding.

[0017] The stator core, the stator winding, the insulating frame, the collector ring and the protective cover can finally be stably connected through the above structure.

[0018] The protective cover covers the space above the conductive part of the slip ring, which is of great significance in protecting its structure from damage, preventing the mixing of impurities and improving the insulation strength between it and other metal structures on the motor.

[0019] In the above-mentioned motor stator assembly, the slip ring is annular, the protection cover is annular, and the inside and outside of the stator core, slip ring and protection cover are all flush.

[0020] This can improve the structural compactness of the entire motor stator assembly.

[0021] In the above motor stator assembly, the slip ring is tightly pressed between the protective cover and the stator core.

[0022] This can improve the connection stability of the entire motor stator assembly.

[0023] In the above-mentioned motor stator assembly, the second connecting portion comprises a positioning groove recessed along the axial direction of the stator core on the inner side of the insulating frame, and a protruding stop edge is provided at the upper end of the positioning groove.

[0024] The hook 1 has appropriate elasticity or toughness, and when the hook 1 is blocked by the stop edge, the hook 1 can be deformed, and after the deformed hook 1 passes over the stop edge, the hook 1 returns to its original shape. At this time, the lower end of the hook is stably buckled at the lower part of the stop edge, so that a stable buckling connection is formed.

[0025] The positioning groove guides the buckle hook together to ensure that the buckle hook can stably enter the retaining edge.

[0026] Similarly, the connection method between the second hook and the insulating frame is also based on the above principle. Therefore, the specific connection process will not be repeated in the specification.

[0027] In the above-mentioned motor stator assembly, the retaining edge and the insulating frame are an integrated structure and are made of plastic material.

[0028] In the above-mentioned motor stator assembly, the upper portion of the retaining edge has a smoothly transitioned introduction portion.

[0029] The setting of the introduction part can make the hook one or the hook two pass over the blocking edge smoothly, avoiding the hook one or the hook two from getting stuck before passing over the blocking edge.

[0030] In the above-mentioned motor stator assembly, the introduction portion is a chamfer at the upper portion of the stop edge.

[0031] In the above-mentioned motor stator assembly, the introduction portion is a rounded corner at the upper part of the stop edge.

[0032] Whether chamfering or rounding, both can enable the first and second hooks to smoothly pass over the retaining edge.

[0033] In the above-mentioned motor stator assembly, the hook 1 and the protective cover are an integrated structure and are made of plastic material. The hook 1 can be buckled at the lower part of the stop edge after passing over the stop edge.

[0034] In the above-mentioned motor stator assembly, the merge ring includes a metal copper bar and a body of insulating material. The above-mentioned body is circular and the metal copper bar is covered in the body. The second hook is an integral structure with the body and is made of plastic material. After passing over the stop edge, the second hook can be buckled at the lower part of the stop edge.

[0035] Compared with the prior art, the stator assembly of the motor is creatively connected to the corresponding insulating frame through the hook 1 on the protective cover, and connected to the corresponding insulating frame through the hook 2 on the bus ring, so that the stator core, stator winding, insulating frame, bus ring and protective cover can be stably connected. The connection does not require the aid of fasteners, and the hook 1 and the hook 2 are stably buckled and connected to the corresponding insulating frame. The entire stator assembly is not only compact in structure, but also has high connection stability and high practical value. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a three-dimensional structural schematic diagram of the stator assembly of the motor.

[0037] Figure 2 It is a three-dimensional structural schematic diagram of the protective cover in the stator assembly of the motor.

[0038] Figure 3 It is a three-dimensional structural schematic diagram of the slip ring in the stator assembly of the motor.

[0039] Figure 4 It is a three-dimensional structural schematic diagram of the insulating skeleton in the stator assembly of the motor.

[0040] In the figure, 1, stator core; 2, stator winding; 3, insulating frame; 3a, connection part one; 3b, connection part two; 3b1, positioning groove; 3b2, retaining edge; 3b21, introduction part; 4, collector ring; 4a, hook two; 5, protective cover; 5a, hook one. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0042] It should be noted that when a component is referred to as being "mounted on" another component, it may be directly mounted on the other component or there may be a central component. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a central component at the same time. When a component is considered to be "fixed to" another component, it may be directly fixed on the other component or there may be a central component at the same time.

[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "or / and" used herein includes any and all combinations of one or more related listed items.

[0044] like Figure 1 and Figure 2 and Figure 3 and Figure 4 As shown, the stator assembly of the motor includes a stator core 1, a stator winding 2, an insulating frame 3 and a collector ring 4, and also includes a protective cover 5. The stator core 1 is cylindrical, and the number of the insulating frames 3 is several. The several insulating frames 3 are evenly connected to the stator core 1 in the circumferential direction. The outer side of the insulating frame 3 is a connecting portion 1 3a for winding the stator winding, and the inner side of the insulating frame 3 has a connecting portion 2 3b. The protective cover 5, the collector ring 4 and the insulating frame 3 are arranged up and down along the axial direction of the stator core 1. The side of the protective cover has a hook 1 5a extending downward, and the side of the collector ring 4 has a hook 2 4a extending downward. The hook 1 5a is located at the side of the hook 2 4a. The hook 1 5a can be connected to the connecting portion 2 3b of the insulating frame 3 corresponding to it, and the hook 2 4a can be connected to the connecting portion 2 3b of the insulating frame 3 corresponding to it.

[0045] The slip ring 4 is annular, the protective cover 5 is annular, and the stator core 1, slip ring 4 and protective cover 5 are flush inside and outside.

[0046] The slip ring 4 is tightly pressed between the protection cover 5 and the stator core 1 .

[0047] The second connecting portion 3b comprises a positioning groove 3b1 which is recessed along the axial direction of the stator core 1 on the inner side of the insulating frame 3, and a protruding stop edge 3b2 is provided at the upper end of the positioning groove 3b1.

[0048] The retaining edge 3b2 and the insulating frame 3 are an integrated structure and are made of plastic material.

[0049] The upper portion of the retaining edge 3b2 has a smoothly transitioned introduction portion 3b21.

[0050] The introduction portion 3b21 is a chamfer at the upper portion of the retaining edge 3b2. According to actual conditions, it is also feasible that the introduction portion 3b21 is a rounded corner at the upper portion of the retaining edge 3b2.

[0051] The buckle hook 5a and the protective cover 5 are an integrated structure and are made of plastic material. After the buckle hook 5a passes over the retaining edge 3b2, it can be buckled at the lower part of the retaining edge 3b2.

[0052] The collector ring 4 includes a metal copper bar and a body of insulating material. The body is circular and the metal copper bar is covered in the body. The second hook 4a is an integral structure with the body and is made of plastic material. After passing over the retaining edge 3b2, the second hook 4a can be buckled at the lower part of the retaining edge 3b2.

[0053] The stator assembly of the motor creatively arranges the stator core, stator winding, insulating frame, collector ring and protective cover from bottom to top in the axial direction of the stator core. Since the insulating frame is stably fixed to the stator core, the collector ring is stably connected to the second connection part of the corresponding insulating frame through the second hook thereon, and the protective cover is stably connected to the second connection part of the corresponding insulating frame through the first hook thereon.

[0054] At the same time, the connection portion on the outside of the insulating frame can provide a stable connection for the stator winding.

[0055] The stator core, the stator winding, the insulating frame, the collector ring and the protective cover can finally be stably connected through the above structure.

[0056] The protective cover covers the space above the conductive part of the slip ring, which is of great significance in protecting its structure from damage, preventing the mixing of impurities and improving the insulation strength between it and other metal structures on the motor.

[0057] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0058] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present invention and are not intended to limit the present invention. As long as they are within the spirit of the present invention, appropriate changes and modifications to the above embodiments are within the scope of protection required by the present invention.

Claims

1. A motor stator assembly, comprising a stator core, a stator winding, an insulating frame and a slip ring, characterized in that: It also includes a protective cover, the stator core is cylindrical, the number of the insulating skeletons is several, and the several insulating skeletons are evenly connected to the stator core in the circumferential direction, the outer side of the insulating skeleton is a connection part 1 for winding the stator winding, the inner side of the insulating skeleton has a connection part 2, the protective cover, the collector ring and the insulating skeleton are arranged up and down along the axial direction of the stator core, the side of the protective cover has a hook 1 extending downward, the side of the collector ring has a hook 2 extending downward, the hook 1 is located at the side of the hook 2, the hook 1 can be connected to the connection part 2 of the insulating skeleton corresponding to it, and the hook 2 can be connected to the connection part 2 of the insulating skeleton corresponding to it.

2. The motor stator assembly according to claim 1, characterized in that: The slip ring is annular, the protective cover is annular, and the stator core, slip ring and protective cover are flush inside and outside.

3. The motor stator assembly according to claim 2, characterized in that: The slip ring is tightly pressed between the protective cover and the stator core.

4. The motor stator assembly according to claim 3, characterized in that: The second connecting portion comprises a positioning groove which is recessed along the axial direction of the stator core on the inner side of the insulating frame, and a protruding stop edge is provided at an upper end of the positioning groove.

5. The motor stator assembly according to claim 4, characterized in that: The retaining edge and the insulating frame are an integrated structure and are made of plastic material.

6. The motor stator assembly according to claim 5, characterized in that: The upper part of the baffle edge is provided with a smoothly transitioned introduction part.

7. The motor stator assembly according to claim 6, characterized in that: The introduction portion is a chamfer at the upper portion of the stop edge.

8. The motor stator assembly according to claim 6, characterized in that: The introduction portion is a rounded corner at the upper portion of the baffle.

9. The motor stator assembly according to claim 7, characterized in that: The buckle hook 1 and the protective cover are an integrated structure and are made of plastic material. The buckle hook 1 can be buckled at the lower part of the stop edge after passing over the stop edge.

10. The motor stator assembly according to claim 9, characterized in that: The collector ring includes a metal copper bar and a body of insulating material. The body is circular and the metal copper bar is wrapped in the body. The second hook is an integral structure with the body and is made of plastic material. After passing over the baffle, the second hook can be buckled at the lower part of the baffle.

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