Stator coil framework capable of improving electrical safety and motor assembly

Abstract

The utility model relates to the technical field of compressors, and discloses a stator coil framework and a motor assembly capable of improving electrical safety, the stator coil framework comprises a framework body and a collinear terminal box, the collinear terminal box comprises a wiring part and a blocking part, the wiring part is arranged on the peripheral wall of the framework body, and the blocking part is arranged on the peripheral wall of the framework body. The blocking part is connected to the side, away from the framework body, of the wiring part, the wiring part is used for clamping an enameled wire, and the blocking part is used for separating the enameled wire from a compressor shell; the utility model has the following technical effects: the safety requirements of the insulation distance and the voltage endurance capability of the motor are met in a limited space distance and a limited creepage distance.

Description

Technical Field

[0001] The utility model belongs to the technical field of compressors, and particularly relates to a stator coil skeleton and a motor assembly for improving electrical safety. Background Art

[0002] Variable frequency compressors play a core role in modern refrigeration and air-conditioning systems, and their performance directly affects the energy efficiency and reliability of the systems. In the design and manufacturing process of variable frequency compressors, the insulation withstand voltage performance of the motor is one of the key factors to ensure the safe operation of the equipment.

[0003] In the traditional motor stator assembly, the collinear end, that is, the end of the stator coil, adopts a crimped collinear connection method. Due to the exposed structure of the enameled wire, the safety distance requirement between the exposed copper wire and the compressor housing is very high. And due to the limitation of the spatial structure of the compressor, the spatial distance and creepage distance reserved for the exposed copper wire and the compressor housing cannot meet the requirements of safety regulations. Summary of the Utility Model

[0004] In order to solve the deficiencies of the above-mentioned prior art, the utility model provides a stator coil skeleton and a motor assembly for improving electrical safety, achieving the purpose of meeting the safety regulations requirements of the insulation distance and withstand voltage ability of the motor within the limited spatial distance and creepage distance.

[0005] The technical purpose to be achieved by the utility model is realized through the following technical solutions:

[0006] The utility model provides a stator coil skeleton for improving electrical safety, including a skeleton body and a collinear terminal box;

[0007] The collinear terminal box includes a wiring part and a blocking part. The wiring part is arranged on the outer peripheral wall of the skeleton body, and the blocking part is connected to the side of the wiring part away from the skeleton body;

[0008] The wiring part is used for clamping the enameled wire, and the blocking part is used for separating the enameled wire from the compressor housing.

[0009] In some implementation modes, the wiring part includes a plurality of wiring grooves arranged at intervals. The wiring grooves are opened along the outer peripheral wall of the skeleton body towards the direction of the blocking part, so that the enameled wire is clamped and led out collinearly under the action of the wiring grooves.

[0010] In some implementation modes, the opening of the wiring groove is in an open shape, and the open shape can play a guiding role in the clamping of the enameled wire, improving the operation convenience of the clamping of the enameled wire.

[0011] In some implementations, the wiring slot includes a first wiring terminal and a second wiring terminal which are oppositely arranged. Protrusions for clamping the enameled wire are formed facing each other on both the first wiring terminal and the second wiring terminal, further improving the clamping stability of the enameled wire and avoiding the detachment of the enameled wire.

[0012] In some implementations, a support block is formed on the bottom of the wiring slot facing away from the skeleton body. The support block is used to support the cutting of the enameled wire, improving the convenience of the operation.

[0013] In some implementations, the wiring part and the blocking part are an integrally formed structure, eliminating the assembly process and improving the installation efficiency and use stability.

[0014] In some implementations, the blocking part includes a first baffle and a first connecting plate. The first baffle is connected to the wiring part through the first connecting plate;

[0015] The first baffle is located between the lead-out end of the enameled wire and the inner wall of the compressor housing, playing a role of blocking and insulating the exposed copper wire part of the enameled wire and avoiding contact with the compressor housing.

[0016] In some implementations, the blocking part is enclosed and connected to the side of the wiring part away from the skeleton body, ensuring that the exposed copper wire part is blocked and insulated in multiple directions.

[0017] In some implementations, the wiring part and the blocking part are a split structure. A slot is formed on the side of the wiring part away from the skeleton body. The blocking part is inserted into the slot, facilitating the lead-out and clamping operation of the enameled wire and also playing a role of blocking and insulating.

[0018] The present utility model also provides a motor assembly, including a stator core, a compressor housing, and the stator coil skeleton according to any one of the above;

[0019] The skeleton body is arranged on the upper end surface or the lower end surface of the stator core, and the compressor housing is sleeved on the outer periphery of the skeleton body and the stator core.

[0020] In summary, the present utility model has at least the following advantages:

[0021] 1. The stator coil skeleton for improving electrical safety provided by the present utility model is provided with a blocking part on the coaxial terminal box to separate the enameled wire from the compressor housing, ensuring that there is no contact between the exposed copper wire part and the compressor housing, and achieving the safety regulations requirements of meeting the insulation distance and withstand voltage ability of the motor in a limited space distance and creepage distance.

[0022] 2. After applying this stator coil skeleton, the motor assembly provided by the present utility model can improve its electrical safety and meet the safety requirements of the insulation distance and withstand voltage capacity of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic structural diagram of the stator coil skeleton according to Embodiment 1 of the present utility model;

[0024] Figure 2 It is a schematic structural diagram of the coaxial terminal box according to Embodiment 1 of the present utility model;

[0025] Figure 3 It is a schematic structural diagram of a coaxial terminal box according to Embodiment 2 of the present utility model;

[0026] Figure 4 It is another schematic structural diagram of the coaxial terminal box according to Embodiment 2 of the present utility model;

[0027] Figure 5 It is another schematic structural diagram of the coaxial terminal box according to Embodiment 2 of the present utility model;

[0028] Figure 6 It is a schematic structural diagram of the motor assembly according to Embodiment 3 of the present utility model;

[0029] 100. Skeleton body;

[0030] 200. Coaxial terminal box; 210. Wiring part; 211. Wiring slot; 211a. First wiring terminal; 211b. Second wiring terminal; 211c. Protrusion; 212. Support block; 213. Slot; 220. Blocking part; 221. First baffle; 222. First connecting plate;

[0031] 300. Stator core;

[0032] 400. Compressor housing. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] In order to make the purpose, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. The described embodiments are some, but not all, of the embodiments of the present utility model.

[0034] Therefore, the detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the present utility model to be protected, but merely represents the selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the scope of protection of the present utility model.

[0035] Embodiment 1:

[0036] Please refer to Figure 1 and Figure 2 , a stator coil skeleton for improving electrical safety, including a skeleton body 100 and a common terminal box 200, and the common terminal box 200 is used for the insertion of terminals and the clamping of enameled wires.

[0037] Generally, there are two ways to lead out wires from the stator core. One is to lead out with a flexible wire, and the other is to lead out by the common terminal box 200 on the skeleton body 100. In this example, it is applicable to the wire leading method that leads out by the common terminal box 200 on the skeleton body 100.

[0038] The common terminal box 200 can simultaneously realize the insertion of terminals and the clamping of enameled wires. During specific operation, first clamp the enameled wire on the common terminal box 200, and then insert the terminal into the common terminal box 200.

[0039] The common terminal box 200 includes a wiring part 210 and a blocking part 220. The wiring part 210 is arranged on the outer peripheral wall of the skeleton body 100, and the blocking part 220 is connected to the side of the wiring part 210 away from the skeleton body 100. The wiring part 210 is used for clamping the enameled wire, and the blocking part 220 is used for separating the enameled wire from the compressor housing.

[0040] Specifically, a plurality of sub-skeletons are evenly spaced and formed on the inner peripheral arm of the skeleton body 100. The distribution position and quantity of the sub-skeletons correspond to the stator teeth of the stator core. The sub-skeletons are used for winding the coil windings. The wiring part 210 arranged on the outer peripheral wall of the skeleton body 100 is used for clamping the enameled wire and facilitating the common leading out of the enameled wire from a partial position of the stator core. It can be known that a compressor housing is sleeved on the outer periphery of the skeleton body 100. At this time, in order to ensure the distance between the bare copper wire part of the enameled wire and the compressor housing, in this example, a blocking part 220 is connected to the side of the wiring part 210 away from the skeleton body 100, that is, the blocking part 220 is located between the wiring part 210 and the compressor housing, so as to ensure the blocking and insulation protection effect, and meet the safety regulations requirements of the insulation distance and withstand voltage ability of the motor in a limited space distance and creepage distance.

[0041] In some embodiments, the wiring part 210 includes a plurality of wiring grooves 211 arranged at intervals. The wiring grooves 211 are opened along the outer peripheral wall of the skeleton body 100 in the direction towards the blocking part 220, so that the enameled wire is clamped and led out in common under the action of the wiring grooves 211.

[0042] For example, there are three wiring grooves 211, and the three wiring grooves 211 are respectively used for the clamping operation of three enameled wires. It should be noted that in order to cooperate with the coaxial terminal box 200 to realize the insertion operation of the terminals, a docking plug can also be provided between two adjacent wiring grooves 211 to facilitate the insertion operation with the terminals. Of course, the number of the wiring grooves 211 and the position of the docking plug are not limited in this example, and can be adjusted according to actual needs.

[0043] The opening of the wiring groove 211 is in an open shape, and the open shape can play a guiding role in the clamping of the enameled wire, improving the operation convenience of the clamping of the enameled wire.

[0044] When performing the clamping operation on the enameled wire, the enameled wire is clamped from the opening of the wiring groove 211 towards the bottom of the wiring groove 211. It can be known that in order to enable the enameled wire to be stably clamped in the wiring groove 211, the width of the wiring groove 211 is usually slightly smaller than the wire diameter of the enameled wire. Therefore, during the process of clamping the enameled wire from the opening of the wiring groove 211 towards the bottom of the wiring groove 211, the open shape can play a guiding role in the enameled wire to better perform the clamping operation of the enameled wire.

[0045] Specifically, the wiring groove 211 includes a first wiring end 211a and a second wiring end 211b which are oppositely arranged. Protrusions 211c for clamping the enameled wire are formed facing each other on both the first wiring end 211a and the second wiring end 211b. The formation of the protrusions 211c on both the first wiring end 211a and the second wiring end 211b can further improve the clamping stability of the enameled wire and prevent the enameled wire from falling off.

[0046] To avoid the excessive clamping effect from affecting the normal use performance of the enameled wire and ensure the stable clamping effect of the enameled wire, the protrusions 211c can be formed at the edges of the first wiring end 211a and the second wiring end 211b. For example, the protrusions 211c are formed at two opposite edges of the first wiring end 211a and at two opposite edges of the second wiring end 211b to further clamp the positions of the enameled wire at the inlet end and the outlet end of the wiring groove 211, effectively preventing the displacement or falling off of the enameled wire.

[0047] Furthermore, a support block 212 is formed on the bottom of the wiring groove 211 facing away from the skeleton body 100. The support block 212 is used to support the cutting of the enameled wire, improving the operation convenience.

[0048] It can be known that the number setting and position distribution of the support blocks 212 match the wiring grooves 211 to facilitate the corresponding support for the cutting of each enameled wire.

[0049] The stator coil skeleton for improving electrical safety provided by the present utility model is provided with a blocking portion 220 on the collinear terminal box 200, which is used to separate the enameled wire from the compressor housing, ensuring that there is no contact between the exposed copper wire and the compressor housing, and achieving the safety requirements of the insulation distance and withstand voltage capacity of the motor in the limited space distance and creepage distance.

[0050] Embodiment 2:

[0051] The difference between this embodiment and Embodiment 1 is that this embodiment further optimizes the structure of the stator coil skeleton of the present utility model. Please refer to Figures 3 - 5 .

[0052] The wiring portion 210 and the blocking portion 220 are of an integrally formed structure, eliminating the assembly process and improving the installation efficiency and use stability.

[0053] As Figure 3 shown, the blocking portion 220 includes a first baffle 221 and a first connecting plate 222. The first baffle 221 is connected to the wiring portion 210 through the first connecting plate 222; the first baffle 221 is located between the lead-out end of the enameled wire and the inner wall of the compressor housing, playing a role of blocking and insulating the exposed copper wire portion of the enameled wire and avoiding contact with the compressor housing.

[0054] Specifically, the first baffle 221 is disposed opposite to the outer surface of the wiring portion 210 on the side away from the compressor housing, while the first connecting plate 222 is connected to the wiring portion 210 at a position avoiding the position for clamping the enameled wire. In this way, not only can the stable clamping effect of the enameled wire be ensured, but also the enameled wire can be blocked from the compressor housing through the first baffle 221 to improve electrical safety.

[0055] In some embodiments, as Figure 4 shown, the blocking portion 220 is enclosed and connected to the side of the wiring portion 210 away from the skeleton body 100, ensuring that the exposed copper wire portion is blocked and insulated in multiple directions.

[0056] That is to say, the blocking portion 220 not only includes the aforementioned first baffle 221 and first connecting plate 222, but also includes a first side baffle and a second side baffle, and the first side baffle and the second side baffle are respectively connected to opposite sides of the first baffle 221, so that the entire blocking portion 220 forms an opening in the same direction as the wiring portion 210, facilitating the clamping operation of the enameled wire and ensuring that the blocking and insulating effects can be achieved in the opposite and lateral directions of the compressor housing.

[0057] In some embodiments, as Figure 5As shown, the wiring part 210 and the blocking part 220 are of a split structure. A slot 213 is formed on the side of the wiring part 210 away from the skeleton body 100. The blocking part 220 is inserted into the slot 213, which facilitates the lead-out and clamping operation of the enameled wire and can also play a role in blocking insulation.

[0058] In specific applications, after first clamping the enameled wire to the wiring part 210, then insert the blocking part 220 into the slot 213 to play a role in blocking insulation for the enameled wire.

[0059] In this embodiment, several different structures of the coaxial terminal box 200 are provided, all of which can ensure that there is no contact between the bare copper wire and the compressor housing, and meet the safety regulations requirements of the insulation distance and withstand voltage ability of the motor in the limited space distance and creepage distance.

[0060] Embodiment 3:

[0061] Based on the above embodiment, this embodiment provides a motor assembly. Please refer to Figure 6 .

[0062] A motor assembly includes a stator core 300, a compressor housing 400, and the stator coil skeleton in any of the above embodiments. The skeleton body 100 is arranged on the upper end face or the lower end face of the stator core 300. The compressor housing 400 is sleeved on the outer periphery of the skeleton body 100 and the stator core 300, so that the coaxial terminal box 200 is located between the compressor housing 400 and the skeleton body 100. The wiring part 210 of the coaxial terminal box 200 plays a clamping role for the enameled wire, and the blocking part 220 blocks and insulates the bare copper wire of the enameled wire from the compressor housing 400.

[0063] The motor assembly provided by the present utility model can improve its electrical safety and meet the safety regulations requirements of the insulation distance and withstand voltage ability of the motor after applying the stator coil skeleton.

[0064] In the present utility model, unless otherwise clearly specified and defined, terms such as "installation", "connection", "connection", "fixation" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0065] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and should not be construed as indicating or implying relative importance.

[0066] In addition, the terms "horizontal", "vertical", "overhanging", etc. do not mean that the components are required to be absolutely horizontal or overhanging, but may be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but may be slightly inclined.

[0067] In the present utility model, unless otherwise clearly specified and defined, the first feature being above or below the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through additional features therebetween. Moreover, the first feature being above, over, and on the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature. The first feature being below, under, and beneath the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature has a lower horizontal height than the second feature.

[0068] Although the description of the present utility model is made in conjunction with the above specific embodiments, it is obvious that those skilled in the art can make many substitutions, modifications, and changes based on the above content. Therefore, all such substitutions, improvements, and changes are included within the spirit and scope of the appended claims.

Claims

1. A stator coil skeleton for improving electrical safety, characterized in that It includes a skeleton body (100) and a coaxial terminal box (200); The coaxial terminal box (200) includes a wiring part (210) and a blocking part (220). The wiring part (210) is arranged on the outer peripheral wall of the skeleton body (100), and the blocking part (220) is connected to the side of the wiring part (210) away from the skeleton body (100); The wiring part (210) is used for clamping the enameled wire, and the blocking part (220) is used for separating the enameled wire from the compressor housing.

2. The stator coil skeleton for improving electrical safety according to claim 1, characterized in that, The wiring part (210) includes a plurality of wiring grooves (211) arranged at intervals. The wiring grooves (211) are opened along the direction of the outer peripheral wall of the skeleton body (100) towards the blocking part (220).

3. The stator coil skeleton for improving electrical safety according to claim 2, characterized in that, The opening of the wiring groove (211) is in an open shape.

4. The stator coil skeleton for improving electrical safety according to claim 2, characterized in that The wiring groove (211) includes a first wiring end (211a) and a second wiring end (211b) arranged oppositely. Protrusions (211c) for clamping the enameled wire are formed on both the first wiring end (211a) and the second wiring end (211b) facing each other.

5. The stator coil skeleton for improving electrical safety according to claim 2, wherein, A support block (212) is formed on the bottom of the wiring groove (211) facing away from the skeleton body (100). The support block (212) is used for supporting the cutting of the enameled wire.

6. The stator coil skeleton for improving electrical safety according to claim 1, wherein The wiring part (210) and the blocking part (220) are of an integrally formed structure.

7. The stator coil skeleton for improving electrical safety according to claim 6, characterized in that, The blocking part (220) includes a first baffle (221) and a first connecting plate (222). The first baffle (221) is connected to the wiring part (210) through the first connecting plate (222); The first baffle (221) is located between the lead-out end of the enameled wire and the inner wall of the compressor housing.

8. The stator coil skeleton for improving electrical safety according to claim 6, characterized in that The blocking part (220) is enclosed and connected to the side of the wiring part (210) away from the skeleton body (100).

9. The stator coil skeleton for improving electrical safety according to claim 1, wherein The wiring part (210) and the blocking part (220) are of a split structure. A slot (213) is formed on the side of the wiring part (210) away from the skeleton body (100). The blocking part (220) is inserted into the slot (213).

10. A motor assembly, characterized in that, It includes a stator core (300), a compressor housing (400) and the stator coil skeleton according to any one of claims 1-9; The skeleton body (100) is arranged on the upper end face or the lower end face of the stator core (300). The compressor housing (400) is sleeved on the outer peripheries of the skeleton body (100) and the stator core (300).

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