Insulation support and stator

Abstract

The invention provides an insulating bracket and a stator. The insulation support is used in a compressor and comprises a support body which is in a circular ring shape and forms a first end and a second end along the axial direction of the support body; the wiring terminals, the lead positioning grooves and the supporting pieces are arranged at intervals in the circumferential direction of the support body and protrude out of the first end of the support body. The insulation support provided by the invention meets the functions of insulation, stator winding and outgoing line positioning, and is only provided with the wiring terminal, the lead positioning groove and the supporting piece which are arranged to exceed the first end of the support body, and no connection structure exceeding the end part of the support body exists among the wiring terminal, the lead positioning groove and the supporting piece; therefore, the material of the insulation support is saved, the cost of the insulation support is reduced, and the economical efficiency of the insulation support is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and in particular to an insulating bracket and a stator. Background Art

[0002] At present, due to the widespread use of electricity, motors are used in all aspects of daily life and industrial production. Motors refer to electromagnetic devices that realize the conversion or transmission of electric energy according to the law of electromagnetic induction. The main function of motors is to generate driving torque as a power source for electrical appliances or various equipment.

[0003] As the core energy conversion device in the compressor, the motor carries a high voltage and current, so the insulation of the motor itself is particularly important. The motor is mainly composed of two parts: the stator and the rotor. The stator contains the stator core and the stator winding. Insulation protection is required between the stator core and the stator winding. At present, it is more common to use two forms, insulating film and insulating bracket, to insulate the stator core from the stator winding. Since the insulating bracket has a high degree of automation in winding and has a good fixing effect on the stator winding, in order to achieve higher production efficiency, the industry now mostly uses insulating brackets to achieve insulation protection in the stator. The current insulation bracket structure of the compressor motor is relatively complex and uses more materials. The structure of the insulating bracket needs to be simplified, while improving its economy. Summary of the invention

[0004] In view of the problems in the prior art, an object of the present invention is to provide an insulating bracket and a stator, which can reduce the material consumption of the insulating bracket while ensuring the function of the insulating bracket and improve the economy of the insulating bracket.

[0005] An embodiment of the present invention provides an insulating bracket for use in a compressor, comprising:

[0006] The support body is annular and has a first end and a second end formed along its axial direction;

[0007] The wiring terminal, the lead wire positioning groove and the support member are arranged at intervals along the circumference of the bracket body and protrude from the first end of the bracket body;

[0008] In some embodiments, the support member includes a first support member and a second support member that are spaced apart from each other, and the first support member and the second support member are arc-shaped structures extending along the circumference of the bracket body.

[0009] In some embodiments, the center line of the terminal block is vertically arranged with the center line of the lead positioning groove, the center line of the first support member is horizontally arranged with the center line of the terminal block, and the center line of the second support member is horizontally arranged with the center line of the lead positioning groove.

[0010] In some embodiments, the angle formed by the lines connecting the two ends of the first support member to the center of the bracket body is α, and the angle formed by the lines connecting the two ends of the second support member to the center of the bracket body is β, satisfying: 15°≤α≤90°, 15°≤β≤90°.

[0011] In some embodiments, it further includes a plurality of winding teeth that are evenly spaced along the circumference of the inner surface of the bracket body and extend from the inner surface of the bracket body toward the center point of the bracket body.

[0012] In some embodiments, the winding teeth are surrounded at one end of the stent body to form a circumferential structure, the circumferential structure protrudes from the surface of the inner wall of the stent body, and the inner diameter of the circumferential structure is R1, which satisfies: 40mm≤R1≤50mm.

[0013] In some embodiments, the inner diameter of the stent body is R2, satisfying: 0.4mm≤R2-R1≤2mm.

[0014] In some embodiments, the thickness of the bracket body is H, and the thickness of the radial portion of the winding teeth is D, satisfying: 1mm≤H≤3mm, 1mm≤D≤3mm.

[0015] In some embodiments, R1, R2 and H satisfy: 1.4+R1-R2≤H≤R1-R2+5.

[0016] An embodiment of the present invention further provides a stator, comprising:

[0017] stator core;

[0018] The insulating bracket as described above is arranged at at least one end of the stator core;

[0019] The stator winding comprises a plurality of coils which are respectively wound on the winding teeth of the insulating support.

[0020] The insulating bracket and stator provided by the present invention have the following advantages:

[0021] The insulating bracket in the present technical solution has a simple structure and meets the functions of insulation, winding stator windings and positioning lead wires. Only the wiring terminals, lead positioning grooves and support members are arranged beyond the first end of the bracket body. The wiring terminals, lead positioning grooves and support members have no connection structure beyond the end of the bracket body. Therefore, the material used for the insulating bracket is saved, the cost of the insulating bracket is reduced, and the economy of the insulating bracket is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Other features, objectives and advantages of the present invention will become more apparent from a reading of the detailed description of non-limiting embodiments made with reference to the following accompanying drawings.

[0023] Figure 1 is a three-dimensional schematic diagram of an insulating bracket according to an embodiment of the present invention;

[0024] Figure 2 is a schematic diagram of a first end of an insulating bracket according to an embodiment of the present invention;

[0025] Figure 3 is a schematic diagram of a second end of an insulating bracket according to an embodiment of the present invention;

[0026] Figure 4 2 is a cross-sectional schematic diagram of an insulating bracket according to an embodiment of the present invention.

[0027] Reference numerals:

[0028] 10 Bracket body

[0029] 20 Terminal Blocks

[0030] 30 Lead wire positioning groove

[0031] 40 Support

[0032] 41 first support member

[0033] 42 second support member

[0034] 50 winding teeth

[0035] 51 Circular structure

[0036] 52 Radial section

[0037] 53 Axial section

[0038] 60 Fixed column DETAILED DESCRIPTION

[0039] 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; rather, 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.

[0040] In the representations of the present application, the representations with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics represented in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. Moreover, the represented specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples represented in the present application and the features of the different embodiments or examples, unless they contradict each other.

[0041] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the representation of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0042] It should be further understood that the terms "comprises" and "includes" 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" used herein are interpreted as inclusive, or mean any one or any combination. Therefore, "A, B or C" or "A, B and / or C" means "any of the following: A; B; C; A and B; A and C; B and C; A, B and C". Exceptions to this definition will only occur when the combination of elements, functions, steps or operations is inherently mutually exclusive in some way.

[0043] In order to solve the problems in the prior art, an embodiment of the present invention provides an insulating bracket for use in a compressor, comprising: a bracket body, which is in a circular ring shape, forming a first end and a second end along its axial direction; a wiring terminal, a lead wire positioning groove and a support member, which are arranged along the circumference of the bracket body and protrude from the first end of the bracket body; the support member comprises a first support member and a second support member, and the first support member and the second support member are provided with a spacing distance. The insulating bracket in this technical solution meets the functions of insulation, winding stator windings and positioning lead wires, and only the wiring terminal, the lead wire positioning groove and the support member are arranged beyond the first end of the bracket body, and the wiring terminal, the lead wire positioning groove and the support member have no connection structure beyond the end of the bracket body, thereby saving materials for the insulating bracket, reducing the cost of the insulating bracket, and improving the economy of the insulating bracket.

[0044] The insulating support of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments shown are not intended to limit the protection scope of the present invention. Figure 1 A three-dimensional schematic diagram of an insulating bracket provided by an embodiment of the present invention is shown; Figure 2 A schematic diagram of a first end of an insulating bracket provided by an embodiment of the present invention is shown; Figure 3 A schematic diagram showing a second end of an insulating bracket provided by an embodiment of the present invention is shown; Figure 4 A cross-sectional schematic diagram of an insulating bracket provided in one embodiment of the present invention is shown.

[0045] like Figures 1 to 4 As shown, the insulating support includes a support body 10, a terminal 20, a lead wire positioning groove 30 and a support member 40. The support body 10 is annular, and a first end and a second end are formed along its axial direction. The terminal 20, the lead wire positioning groove 30 and the support member 40 are arranged at intervals along the circumference of the support body 10 and protrude from the first end of the support body 10.

[0046] The wiring terminal 20 is used to connect the three-phase lead wires of the stator winding to an external power supply, and the external power supply provides power to the three-phase lead wires so that the stator winding generates a rotating magnetic field. The lead wire positioning groove 30 is used to position the lead wires when the stator winding is routed. The support member 40 is used to facilitate the robot arm to stably grasp the insulating bracket.

[0047] Further, in an embodiment of the present invention, the support member 40 includes a first support member 41 and a second support member 42 arranged at intervals, and the first support member 41 and the second support member 42 are arc-shaped structures extending along the circumference of the bracket body 10. The arc-shaped support member 40 is used for the mechanical arm to grasp the insulating bracket and install the insulating bracket on the stator core, thereby improving the efficiency of assembling the insulating bracket and the stator core. In this embodiment, the center line of the terminal 20 is vertically arranged at an angle of 90° to the center line of the lead positioning groove 30. The center line of the first support member 41 is horizontally arranged with the center line of the terminal 20, and the center line of the second support member 42 is vertically arranged with the center line of the terminal 20. The specific number of the support members 40 and the distribution of each support member 40 on the bracket body 10 are not limited to the above examples, and the number of each support member 40 and the position distributed on the bracket body 10 can also be adjusted according to actual needs.

[0048] Furthermore, if Figure 2 As shown, the angle formed by the lines connecting the two ends of the first support member 41 to the center of the bracket body 10 is α, and the angle formed by the lines connecting the two ends of the second support member 42 to the center of the bracket body 10 is β, which satisfies: 15°≤α≤90°, 15°≤β≤90°. By setting the first support member 41 and the second support member 42 to a suitable arc length, it is convenient for the robot arm to grasp the insulating bracket, avoiding the problem of unstable grasping of the robot arm.

[0049] Furthermore, if Figure 1 As shown, the insulating support further includes a plurality of winding teeth 50 , which are evenly arranged at intervals along the circumference of the inner surface of the support body 10 and extend from the inner surface of the support body 10 toward the center point of the support body 10 .

[0050] Furthermore, if Figure 1 As shown, the winding teeth 50 surround one end of the bracket body 10 to form a circumferential structure 51, and the circumferential structure 51 protrudes from the surface of the inner wall of the bracket body 10. The inner diameter of the circumferential structure 51 is R1, which satisfies: 40mm≤R1≤50mm.

[0051] Furthermore, if Figure 1 As shown, the inner diameter of the bracket body 10 is R2, which satisfies: 0.4mm≤R2-R1≤2mm. By setting the inner diameter R2 of the bracket body 10 to be larger than the inner diameter R1 of the circumferential structure formed by the winding teeth 50, the winding capacity in the direction perpendicular to the axial direction can be increased, and the stack height of the winding in the axial direction can be reduced. Correspondingly, the amount of copper in the winding can be reduced, the resistance can be reduced, the motor cost can be reduced, and the motor efficiency can be improved.

[0052] Furthermore, if Figure 1 As shown, the winding tooth 50 includes a radial portion 52 and an axial portion 53, one end of the radial portion 52 is connected to the inner surface of the bracket body 10, and a winding groove is formed between adjacent radial portions 52; one end of the axial portion 53 is connected to the other end of the radial portion 52 and extends parallel to the central axis of the bracket body 10.

[0053] like Figure 4 As shown, the thickness of the radial portion 52 is D, which satisfies: 1 mm ≤ D ≤ 3 mm.

[0054] Furthermore, if Figure 4 As shown, the thickness of the bracket body 10 is H, which satisfies 1mm≤H≤3mm.

[0055] Furthermore, in some embodiments, the inner diameter R1 of the circumferential structure 51, the inner diameter R2 of the bracket body 10, and the thickness H of the bracket body 10 satisfy: 1.4+R1-R2≤H≤R1-R2+5. By setting R1, R2, and the thickness H of the bracket body 10, a suitable accommodation space is provided for the stator winding, and the stacking height of the stator core is reduced.

[0056] Furthermore, an embodiment of the present invention further provides a stator, comprising:

[0057] stator core;

[0058] The insulating bracket as described above is arranged at at least one end of the stator core;

[0059] The stator winding comprises a plurality of coils which are respectively wound on the winding teeth of the insulating support.

[0060] The stator includes the above-mentioned insulating bracket, so all the technical effects of the above-mentioned insulating bracket can be achieved, which will not be repeated here.

[0061] In some embodiments, the Figure 3 As shown, a plurality of fixing columns 60 are provided at the second end of the insulating bracket; a plurality of fixing holes are provided on the stator core; the fixing columns 60 are matched with the fixing holes in a one-to-one correspondence to fix the insulating bracket on the stator core.

[0062] Furthermore, in some embodiments, the height of the support member 40 is higher than the height of the stator winding. Setting the height of the support member 40 higher than the height of the stator winding is conducive to the stability of the motor buckle, and can avoid damage to the paint film of the stator winding when the motor is pressed into the compressor housing, thereby improving the insulation of the stator winding.

[0063] In summary, the insulating bracket and stator provided by the present invention have the following advantages:

[0064] The insulating bracket in the present technical solution satisfies the functions of insulation, winding stator windings and positioning lead wires, and only the wiring terminals, lead wire positioning grooves and support members are arranged beyond the first end of the bracket body. The wiring terminals, lead wire positioning grooves and support members have no connection structure that exceeds the end of the bracket body, thereby saving materials for the insulating bracket, reducing the cost of the insulating bracket, and improving the economy of the insulating bracket.

[0065] The above contents are further detailed descriptions of the present invention in combination with specific preferred embodiments, 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, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. An insulating bracket, used in a compressor, characterized in that: include: The support body is annular and has a first end and a second end formed along its axial direction; The connection terminals, the lead wire positioning grooves and the support members are arranged at intervals along the circumference of the bracket body and protrude from the first end of the bracket body.

2. The insulating bracket according to claim 1, characterized in that: The support member includes a first support member and a second support member which are spaced apart from each other. The first support member and the second support member are arc-shaped structures extending along the circumference of the bracket body.

3. The insulating bracket according to claim 2, characterized in that: The center line of the connecting terminal is perpendicular to the center line of the lead positioning groove, the center line of the first support member is horizontally arranged with the center line of the connecting terminal, and the center line of the second support member is perpendicular to the center line of the connecting terminal.

4. The insulating bracket according to claim 2, characterized in that: The angle formed by the lines connecting the two ends of the first support member to the center of the bracket body is α, and the angle formed by the lines connecting the two ends of the second support member to the center of the bracket body is β, which satisfies: 15°≤α≤90°, 15°≤β≤90°。 5. The insulating bracket according to claim 1, characterized in that: It also includes a plurality of winding teeth which are evenly arranged along the circumferential direction of the inner surface of the bracket body and extend from the inner surface of the bracket body toward the center point of the bracket body.

6. The insulating bracket according to claim 5, characterized in that: The winding teeth are surrounded at one end of the bracket body to form a circumferential structure, the circumferential structure protrudes from the surface of the inner wall of the bracket body, and the inner diameter of the circumferential structure is R1, which satisfies: 40mm≤R1≤50mm.

7. The insulating bracket according to claim 6, characterized in that: The inner diameter of the bracket body is R2, which satisfies: 0.4mm≤R2-R1≤2mm.

8. The insulating bracket according to claim 7, characterized in that: The thickness of the bracket body is H, and the thickness of the radial portion of the winding teeth is D, which satisfies: 1mm≤H≤3mm, 1mm≤D≤3mm.

9. The insulating bracket according to claim 8, characterized in that: The R1, the R2 and the H satisfy: 1.4+R1-R2≤H≤R1-R2+5.

10. A stator, characterized in that: include: stator core; The insulating bracket according to any one of claims 1 to 9, arranged at at least one end of the stator core; The stator winding comprises a plurality of coils which are respectively wound on the winding teeth of the insulating support.

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