Motor insulation support structure

Abstract

The utility model provides a kind of motor insulation support structure, motor insulation support structure includes support, cover and outgoing line component;Two ends of the support are connected with motor stator and the cover respectively, the support includes annular support body, and the inner side wall of the support body is provided with multiple wire teeth;The cover includes annular end plate and the inner side plate and outer side plate connected with the end plate;The outgoing line component includes plastic shell and three-phase outgoing line, and the three-phase outgoing line includes connection area and has multiple binding wire wire bundle area, and the minimum radial dimension of the wire bundle area is greater than the outer diameter of single-phase outgoing line in the three-phase outgoing line;The end plate is provided with positioning hole, and the inner side plate is provided with through slot, and the through slot is used to pass through the connection area and introduce the wire bundle area into the positioning hole and limit the wire bundle area.

Description

Technical Field

[0001] This utility model relates to the field of compressor-related technology, specifically to a motor insulation support structure. Background Technology

[0002] Variable frequency motors can automatically adjust their speed according to load requirements, reducing high energy consumption under partial loads and thus significantly reducing energy consumption and saving energy. Due to the diversity of existing motor development methods, motor designs often use a cover plate and bracket for fixing. At the same time, the installation of lead wires needs to be considered, requiring optimization of the lead wire inlet design of the cover plate to reduce the difficulty of installation.

[0003] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this utility model, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0004] In view of the problems in the prior art, the purpose of this utility model is to provide a motor insulation support structure, which greatly improves the assembly efficiency, reliability and stability of the motor.

[0005] Specifically, this utility model provides a motor insulation support structure, including a support, a cover plate, and a lead wire assembly;

[0006] The two ends of the bracket are respectively connected to the motor stator and the cover plate. The bracket includes an annular bracket body, and the inner sidewall of the bracket body is provided with multiple winding teeth.

[0007] The cover plate includes an annular end plate and an inner and outer side plate connected to the end plate;

[0008] The lead wire assembly includes a plastic shell and three-phase lead wires. The three-phase lead wires include a connection area and a bundle area with multiple binding wires. The minimum radial dimension of the bundle area is greater than the outer diameter of a single-phase lead wire in the three-phase lead wires.

[0009] The end plate is provided with a positioning hole, and the inner side plate is provided with a through groove. The through groove is used to pass through the connection area and introduce the wire harness area into the positioning hole and limit the wire harness area.

[0010] According to some examples of this utility model, the width of the through slot is greater than the outer diameter of the single-phase lead in the three-phase lead.

[0011] According to some examples of this utility model, the width of the through groove is smaller than the nominal diameter of the wire harness area.

[0012] According to some examples of this utility model, the positioning hole is circular, and the difference between its diameter and the nominal diameter of the wire harness area is between 0.5 mm and 2 mm.

[0013] According to some examples of this utility model, the single-phase lead of the three-phase lead adopts a copper wire / high temperature resistant film / braided wire structure.

[0014] According to some examples of this utility model, the single-phase lead in the three-phase lead includes a busbar and a sub-lead, and the number of sub-leads is greater than the number of busbars.

[0015] According to some examples of this utility model, the length of the connection area is less than or equal to the length of the busbar.

[0016] According to some examples of this utility model, the length of the connecting area is greater than the height of the inner side plate of the cover plate.

[0017] According to some examples of this utility model, the outer side wall of the bracket body is provided with multiple fastening points;

[0018] The outer side plate of the cover plate is provided with multiple mounting holes;

[0019] The cover plate and the bracket are assembled by fastening with multiple fastening points and multiple mounting holes respectively.

[0020] After the three-phase leads of the motor are electrically connected to the three-phase enameled wires on the stator assembly by welding or crimping, the motor insulation support structure of this utility model uses multiple binding wires to form a binding area and a connector connected to the plastic shell. The binding area is fixed by the positioning holes of the cover plate, which greatly improves the production efficiency of the production line and the stability of the motor leads. Attached Figure Description

[0021] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings. It is obvious that the drawings described below are merely some embodiments of this invention, and those skilled in the art can obtain other drawings based on these drawings without inventive effort. Furthermore, the drawings are merely illustrative diagrams of this disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and therefore, repeated descriptions of them will be omitted. Some block diagrams shown in the drawings are functional entities and do not necessarily correspond to physically or logically independent entities.

[0022] Figure 1This is a schematic diagram of the motor insulation bracket structure before assembly according to an embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the structure of a bracket according to an embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the structure of a cover plate according to an embodiment of the present utility model;

[0025] Figure 4 This is a schematic diagram of the lead wire assembly according to an embodiment of the present invention;

[0026] Figure 5 This is a schematic diagram of the lead wire assembly according to another embodiment of the present invention;

[0027] Figure 6 This is a side view of the cover plate according to an embodiment of the present utility model;

[0028] Figure 7 This is a flowchart of an assembly method according to an embodiment of the present invention;

[0029] Figure 8 This is a schematic diagram of step S20 of the assembly method according to an embodiment of the present invention;

[0030] Figure 9 This is a schematic diagram of the assembled motor insulation bracket structure according to an embodiment of the present invention. Detailed Implementation

[0031] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed herein. This utility model can also be implemented or applied through other different specific embodiments. Various details in this utility model can also be modified or changed according to different viewpoints and application systems without departing from the spirit of this utility model. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0032] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings, so that those skilled in the art can easily implement it. This utility model can be embodied in many different forms and is not limited to the embodiments described herein.

[0033] In the representation of this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics represented in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. Furthermore, the specific features, structures, materials, or characteristics represented may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate different embodiments or examples represented in this utility model, as well as features of different embodiments or examples.

[0034] To clearly illustrate this utility model, components unrelated to the description are omitted, and the same or similar constituent elements throughout the specification are given the same reference numerals.

[0035] Throughout this specification, when it is said that a device is "connected" to another device, this includes not only "direct connection" but also "indirect connection" by placing other components in between. Furthermore, when it is said that a device "comprises" a certain constituent element, unless otherwise stated otherwise, this does not exclude other constituent elements, but rather implies that other constituent elements may be included.

[0036] When we say that a device is "above" another device, this can mean that it is directly above the other device, or it can mean that other devices are present in between. Conversely, when we say that a device is "directly" "above" another device, there are no other devices present in between.

[0037] Although the terms first, second, etc., are used in some instances herein to refer to various elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from another. For example, first interface and second interface, etc., are used. Furthermore, as used herein, the singular forms “a,” “an,” and “the” are intended to also include the plural forms unless the context indicates otherwise. It should be further understood that the terms “comprising,” “including,” indicate the presence of features, steps, operations, elements, components, items, kinds, and / or groups, but do not exclude the presence, occurrence, or addition of one or more other features, steps, operations, elements, components, items, kinds, and / or groups. The terms “or” and “and / or” as used herein are interpreted as inclusive, or mean any one or any combination thereof. Thus, “A, B, or C” or “A, B, and / or C” means “any one of: A; B; C; A and B; A and C; B and C; A, B, and C.” Exceptions to this definition will only occur if the combination of elements, functions, steps, or operations is inherently mutually exclusive in some way.

[0038] The technical terms used herein are for reference only to specific embodiments and are not intended to limit the scope of the invention. The singular form used herein includes the plural form unless the statement explicitly indicates otherwise. The word "comprising" as used in this specification means to specify a particular characteristic, region, integer, step, operation, element, and / or component, and does not exclude the presence or addition of other characteristics, regions, integers, steps, operations, elements, and / or components.

[0039] Although not fully defined, all terms, including technical and scientific terms used herein, shall have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. Terms defined in commonly used dictionaries shall be further interpreted as having a meaning consistent with relevant technical literature and the content of this present instruction, and shall not be over-interpreted as having an ideal or overly formulaic meaning unless otherwise defined.

[0040] The motor insulation bracket structure of this utility model is further described below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments are not intended to limit the scope of protection of this utility model.

[0041] This utility model provides a motor insulation support structure. Figure 1 This is a schematic diagram of the motor insulation support structure before assembly according to an embodiment of the present invention. Specifically, the motor insulation support structure includes a support 8, a cover plate 9, and a lead wire assembly 1. Figure 2 This is a schematic diagram of the structure of a bracket according to an embodiment of the present invention; the two ends of the bracket 8 are respectively connected to the motor stator 7 and the cover plate 9. The bracket 8 includes an annular bracket body 81, and the inner sidewall of the bracket body 81 is provided with a plurality of winding teeth 82. The cover plate 9 includes an annular end plate 91 and an inner side plate 92 and an outer side plate 93 connected to the end plate, see Figure 3 The cover plate 9 may also be provided with multiple refrigerant through holes 94, which may be provided on the end plate 91 of the cover plate.

[0042] Figure 4 This is a schematic diagram of the lead wire assembly according to an embodiment of the present invention. The lead wire assembly 1 includes a plastic shell 11 and three-phase lead wires, including a U-phase lead wire, a V-phase lead wire, and a W-phase lead wire. After the three-phase lead wires are electrically connected to the three-phase enameled wires on the stator assembly by welding or crimping, a portion of them is fixed by multiple binding wires 131 and fixed by cooperating with the positioning holes of the cover plate during assembly, which greatly improves the production efficiency of the production line and the stability of the motor lead wires. That is, the three-phase lead wires of the present invention form a connection area 12 connected to the plastic shell 11 and a wire bundle area 13 with multiple binding wires 131. The minimum radial dimension of the wire bundle area 13 is larger than the outer diameter of the single-phase lead wire in the three-phase lead wires.

[0043] The end plate 91 is provided with a positioning hole C, and the inner side plate 92 is provided with a through groove 921. The through groove 921 is used to guide the single-phase leads of the connection area 12 into the positioning hole C and to limit the position of the wire bundle area 13. The width of the through groove 921 is greater than the outer diameter of the single-phase lead in the three-phase leads. The width of the through groove 921 is less than the nominal diameter of the wire bundle area 13. Figure 4 In this embodiment, the single-phase leads are in contact with each other, and the individual single-phase leads are tightly bound together to form a cylindrical shape. At this time, the nominal diameter of the wire harness area 13 is the diameter of the cylindrical shape formed by the binding. For example, when the positioning hole C is circular, the difference between the diameter of the positioning hole C and the nominal diameter of the wire harness area 13 is between 0.5 mm and 2 mm.

[0044] In one embodiment, the single-phase leads of the three-phase leads adopt a coaxial structure of copper wire / high-temperature resistant film / braided wire. The copper wire, as a conductor, possesses excellent conductivity and mechanical strength. The high-temperature resistant film, as an insulating layer, effectively isolates the conductor, preventing leakage and short circuits. Optional materials include polytetrafluoroethylene (PTFE) and fluorinated ethylene propylene copolymer (FEP), which maintain good insulation performance at high temperatures. These high-temperature resistant films also have good heat insulation properties, effectively suppressing heat conduction. The braided wire is generally made of tin-plated or silver-plated copper wire, serving as shielding and protection, improving the lead's anti-interference capability and mechanical strength, while also preventing damage to the insulation layer.

[0045] Figure 5 This is a schematic diagram of the lead-out assembly according to another embodiment of the present invention. The single-phase lead-out in the three-phase lead-out includes a busbar A1 and a sub-battery A2. The number of sub-battery A2s is greater than the number of busbars A1. Figure 5 The diagram shows a busbar A1 connected to two sub-busbars A2.

[0046] Typically, after the motor windings are completed, a portion of the end (single-phase lead) of each winding group needs to be secured with binding wire to form the binding area described in this application before assembly with the bracket and cover plate. Heat-resistant binding wire can be used. The length of the connection area is less than or equal to the length of the busbar, and the length L1 of the connection area 12 is greater than the height L2 of the inner side plate of the cover plate 9 (see...). Figure 6 ).

[0047] In one embodiment, the outer side wall of the bracket body 81 of the bracket 8 is provided with a plurality of fastening points 811, and the outer side plate 93 of the cover plate 9 is provided with a plurality of mounting holes 931. The cover plate 9 and the bracket 8 are assembled by fastening the plurality of fastening points 811 and the plurality of mounting holes 931 respectively.

[0048] To further illustrate the motor insulation bracket structure of this utility model, its conversion method is described below. Figure 7This is a flowchart of an assembly method according to an embodiment of the present invention. Specifically, the assembly method includes the following steps:

[0049] S10: The plastic shell and one end of the three-phase lead wire are connected. Multiple binding wires are used to bind the three-phase lead wire to form a bundle area from a certain distance away from the plastic shell.

[0050] S20: The single-phase leads of the lead assembly's connection area pass through the slots in the cover plate one by one into the positioning holes, see... Figure 8 As shown;

[0051] S30: When all three phase leads of the connection area enter the positioning hole, the relative movement of the connection area and the cover plate makes the wire harness area loosely fit with the positioning hole.

[0052] S40: Attach the cover plate to the bracket via multiple fastening points and mounting holes to complete the assembly. Before attaching the cover plate to the bracket, you can manually adjust the routing of the leads and enameled wires inside the winding to ensure that the enameled wires and leads at that location are all inside the cover plate. Figure 9 This is a schematic diagram of the assembled motor insulation bracket structure according to an embodiment of the present invention.

[0053] The three-phase wires of the lead wire assembly are connected to the three-phase enameled wires on the stator assembly by welding or crimping. After connection, the lead wire assembly is scattered on the upper part of the stator assembly coil. The conventional method is to fix it with binding wire. In order to improve the production efficiency of the production line, a cover plate is added to fix the lead wire inside the stator assembly.

[0054] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

[0055] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the protection scope of the present invention.

Claims

1. A motor insulation support structure, characterized in that, Includes brackets, cover plates, and lead wire assemblies; The two ends of the bracket are respectively connected to the motor stator and the cover plate. The bracket includes an annular bracket body, and the inner sidewall of the bracket body is provided with multiple winding teeth. The cover plate includes an annular end plate and an inner and outer side plate connected to the end plate; The lead wire assembly includes a plastic shell and three-phase lead wires. The three-phase lead wires include a connection area and a bundle area with multiple binding wires. The minimum radial dimension of the bundle area is greater than the outer diameter of a single-phase lead wire in the three-phase lead wires. The end plate is provided with a positioning hole, and the inner side plate is provided with a through groove. The through groove is used to pass through the connection area and introduce the wire harness area into the positioning hole and limit the wire harness area.

2. The motor insulation support structure according to claim 1, characterized in that, The width of the through slot is greater than the outer diameter of the single-phase lead in the three-phase lead.

3. The motor insulation support structure according to claim 1, characterized in that, The width of the through slot is less than the nominal diameter of the wire harness area.

4. The motor insulation support structure according to claim 1, characterized in that, The positioning hole is circular, and the difference between its diameter and the nominal diameter of the wire harness area is between 0.5 mm and 2 mm.

5. The motor insulation support structure according to claim 1, characterized in that, The single-phase leads of the three-phase leads adopt a copper wire / high temperature resistant film / braided wire structure.

6. The motor insulation support structure according to claim 1, characterized in that, The single-phase lead in the three-phase lead includes a busbar and a sub-lead, and the number of sub-leads is greater than the number of busbars.

7. The motor insulation support structure according to claim 6, characterized in that, The length of the connection area is less than or equal to the length of the busbar.

8. The motor insulation support structure according to claim 1, characterized in that, The length of the connecting area is greater than the height of the inner side plate of the cover plate.

9. The motor insulation support structure according to claim 1, characterized in that, The outer side wall of the bracket body is provided with multiple fastening points; The outer side plate of the cover plate is provided with multiple mounting holes; The cover plate and the bracket are assembled by fastening with multiple fastening points and multiple mounting holes respectively.

Images