Motor winding wire insulation connecting piece

Abstract

The utility model relates to the technical field of motors, and discloses a motor winding wire insulation connecting piece, which comprises an integrally formed connecting piece body used for connecting different winding wires. The middle part of the conductive part wraps the periphery of a winding wire, and the insulation protection parts are arranged on the two sides of the conductive part respectively; and the insulation protection layer is arranged on the insulation protection part and is used for insulation protection of joints of different winding wires. According to the motor winding wire insulation connecting piece provided by the utility model, the wire does not need to be rotated and twisted, the probability that the wire is broken and damaged in the production process is reduced, auxiliary welding flux does not need to be additionally added, and the probability that electrochemical reaction occurs at the joint is reduced; and the working part for realizing insulation protection is the insulation protection layer arranged on the insulation protection part, and the substrate part for realizing insulation adopts a metal design, so that the reliability of long-term working of the motor is higher. And the production efficiency can be effectively improved, and the production cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, specifically to an insulating connector for motor winding conductors. Background Technology

[0002] Currently, due to the sharp rise in copper wire prices and cost pressures, more and more motor products are using aluminum wire as winding conductors. However, due to the low tensile strength and poor flexibility of aluminum wire, it is usually not used as the lead wire of motor products.

[0003] Currently, the industry commonly uses copper and aluminum wires as the leads for aluminum wire motors. At the junction of these different metal conductors, a physical phenomenon called an "electrochemical reaction" occurs: due to the different chemical properties of copper and aluminum wires, a weak battery is formed upon contact, creating a potential difference. At the contact point, the aluminum wire has a higher potential, while the copper wire has a lower potential. The greater the potential difference, the stronger the metal oxidation reaction, making oxidation more likely to occur after the copper and aluminum wires come into contact. Therefore, ensuring proper insulation and preventing oxidation at the copper and aluminum wire connection is one of the technical challenges in aluminum wire motor products.

[0004] To address the above problems, existing technologies mainly employ the following two approaches:

[0005] 1. Copper and aluminum wires are physically connected (e.g., the wires are rotated and twisted), and then welded with auxiliary solder. Insulating sleeves are then wrapped around the connection, and finally sealed by binding or heat fusion.

[0006] 2. Copper and aluminum wires are crimped together with terminals, then an insulating sleeve is wrapped around the connection, and finally a seal is achieved by binding or heat fusion.

[0007] For the physical connection of copper and aluminum wires, not only is it easy for the wires to break and be damaged by external force due to the rotation and twisting of the wires of different materials, but the auxiliary solder welding method requires the addition of auxiliary solder during the production process. In addition, the solder is usually different from the material of the motor winding wire. The addition of one material at the connection point will increase the probability of electrochemical reaction. Therefore, the quality of the welding is difficult to control.

[0008] The method of wrapping the connection with insulating material and then sealing it by binding or heat fusion not only fails to achieve a good seal of the insulating material and cannot guarantee the sealing condition of the connection, but also the fact that the insulating sleeve is usually made of non-metallic material. When the compressor is in a high-temperature working environment full of refrigerant and refrigeration oil for a long time, the sleeve is prone to aging, which leads to a decline in the insulation performance of the motor.

[0009] In addition, whether it is sealing with an insulating sleeve after physical connection or sealing with an insulating sleeve after terminal crimping, both methods require manual operation during production, resulting in high labor costs and low production efficiency. Utility Model Content

[0010] To address the shortcomings of the prior art, this invention provides an insulating connector for motor winding conductors. This connector eliminates the need for conductor rotation and twisting, reducing the probability of conductor breakage during production. It also eliminates the need for additional auxiliary solder, reducing the probability of electrochemical reactions at the connection point. Furthermore, the insulating layer on the insulating protective layer provides insulation, while the metal substrate enhances the long-term reliability of the motor compared to insulating sleeves. Additionally, the connector simplifies the connection process for conductors of different materials into a single step, eliminating manual labor and effectively improving production efficiency while reducing costs.

[0011] The technical effects to be achieved by this utility model are realized through the following technical aspects:

[0012] In a first aspect, this utility model provides an insulating connector for motor winding conductors, comprising:

[0013] An integrally formed connector body is used for connecting different winding conductors; it includes a conductive part that wraps around the outer periphery of the winding conductor in the middle, and insulating protective parts disposed on both sides of the conductive part;

[0014] An insulating protective layer is provided on the insulating protective part for insulating protection at the connection points of different winding conductors.

[0015] As one preferred embodiment, the conductive part is a U-shaped conductive part, a semi-circular conductive part, or a 3 / 4 circle conductive part that wraps around the outer periphery of the winding wire.

[0016] As one preferred embodiment, the insulating protection part is an arc-shaped insulating protection part that resembles the outer circumference of the winding conductor.

[0017] As a preferred embodiment, the connector body further includes a connecting portion disposed between the conductive portion and the insulating protective portion.

[0018] As one preferred embodiment, the connecting part is a rectangular connecting part structure, with its large end face forming an angle α with the two end faces of the conductive part, and 75°≤α≤105°.

[0019] As one preferred embodiment, the connector body further includes a protrusion disposed on the conductive portion for electrical connection between different winding wires.

[0020] As one preferred embodiment, the protrusion is at least two ridges or sharp teeth that protrude from the inner circumferential surface of the conductive part along the axial direction of the winding conductor.

[0021] As one preferred embodiment, the protruding ridge is a triangular protruding ridge structure, a rectangular protruding ridge structure, or a trapezoidal protruding ridge structure.

[0022] As one preferred embodiment, the width of the connector body is at least 2 mm.

[0023] As one preferred embodiment, the insulating protective layer is formed by coating an insulating material onto the side of the insulating protective portion away from the conductive portion, and the coating thickness is at least 0.3 mm.

[0024] In summary, this utility model has at least the following advantages:

[0025] 1. The motor winding wire insulation connector provided by this utility model not only eliminates the need for wire rotation and twisting, reducing the probability of wire breakage and damage during production, but also eliminates the need for additional auxiliary solder, reducing the probability of electrochemical reactions at the connection point.

[0026] 2. The motor winding conductor insulation connector provided by this utility model has an insulation protection layer set on the insulation protection part as the working part for achieving insulation protection, and the base part for achieving insulation adopts a metal design. Compared with the insulation method of insulation sleeve, it can make the motor more reliable for long-term operation.

[0027] 3. The motor winding wire insulation connector provided by this utility model can simplify the process of connecting wires of different materials into one step, eliminating manual operation, effectively improving production efficiency and reducing production costs. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the assembly structure of the motor winding conductor insulation connector with copper and aluminum conductors in an embodiment of this utility model.

[0029] Figure 2 This is a schematic diagram of the structure of the connector body in an embodiment of this utility model.

[0030] Figure 3 Figure a is a schematic diagram of the structure of the U-shaped conductive part in an embodiment of this utility model.

[0031] Figure 3 Figure b is a schematic diagram of the semi-circular conductive part in an embodiment of this utility model.

[0032] Figure 3 C is a schematic diagram of the 3 / 4 circular conductive part in an embodiment of this utility model.

[0033] Figure label:

[0034] 10. Copper wire; 20. Aluminum wire;

[0035] 100. Connector body; 110. Conductive part; 120. Insulating protective part; 130. Connecting part; 140. Protrusion;

[0036] 200. Insulation protective layer. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. The described embodiments are some, but not all, of the embodiments of this utility model.

[0038] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0039] Example 1:

[0040] Please see the appendix Figure 1 and 2 The motor winding conductor insulation connector of this utility model includes an integrally formed connector body 100. The connector body 100 includes a conductive portion 110 that wraps around the outer periphery of the winding conductor in the middle, and insulating protective portions 120 disposed on both sides of the conductive portion 110; and an insulating protective layer 200 disposed on the insulating protective portion 120. The connector body 100 is used to connect the copper conductor 10 and the aluminum conductor 20, and the insulating protective layer 200 is used to provide insulation protection at the copper-aluminum conductor connection.

[0041] Furthermore, the conductive part 110 is a U-shaped conductive part wrapped around the outer periphery of the winding wire (as shown in the attached diagram). Figure 3 As shown in (a), the semi-circular conductive part (as shown in the attached diagram) Figure 3 (as shown in (b)) or the 3 / 4 circular conductive part (as shown in the attached diagram) Figure 3 As shown in (c), the specific design can be selected and customized according to actual needs, mainly to achieve conductivity between two different types of conductors. The insulation protection part 120 is an arc-shaped insulation protection part similar in shape to the outer periphery of the winding conductor, as shown in the attached figure. Figure 2As shown, after the connector is crimped, the insulation protection part 120 can tightly wrap around the outer periphery of the winding conductor, effectively ensuring the stability of the winding conductor connection.

[0042] Preferably, the length of the conductive portion 110 surrounding the winding conductor is at least the circumference of one of the winding conductors, to ensure the effectiveness of conductivity between the two winding conductors after the connector connects them. More preferably, the length of the insulating protective portion 120 surrounding the winding conductor is greater than the circumference of the conductive portion 110 surrounding the winding conductor, ensuring that the insulating protective portion 120 completely surrounds the outer circumference of the conductor portion, thus providing effective insulation protection for the winding conductor connection after the insulating protective layer 200 is applied.

[0043] Furthermore, the width of the connector body 100 is at least 2 mm, meaning the width of the connector covering the connection point of the two winding conductors is at least 2 mm, which effectively ensures the stability of the connector's protection of the winding conductor connection point. Furthermore, the insulating protective layer 200 is formed by coating insulating material onto the side of the insulating protective portion 120 away from the conductive portion 110. And to ensure the overall insulation performance of the connector, preferably, the coating thickness of the insulating material on the insulating protective portion 120 is at least 0.3 mm.

[0044] The motor winding conductor insulation connector of this embodiment eliminates the need for conductor rotation and twisting, reducing the probability of conductor breakage during production. It also eliminates the need for additional auxiliary solder, reducing the probability of electrochemical reactions at the connection point. Furthermore, the insulating layer 200, located on the insulating protection section 120, provides insulation protection, and the metal substrate design enhances the long-term reliability of the motor compared to insulating sleeves. Additionally, this connector simplifies the connection process between conductors of different materials into a single step, eliminating manual operations and effectively improving production efficiency while reducing costs.

[0045] Example 2:

[0046] Please see the appendix Figure 1 and 2 The motor winding conductor insulation connector of this embodiment is the same as that of Embodiment 1, both including an integrally formed connector body 100. The connector body 100 includes a conductive portion 110 that wraps around the outer periphery of the winding conductor, and insulating protective portions 120 disposed on both sides of the conductive portion 110; and an insulating protective layer 200 disposed on the insulating protective portion 120. The connector body 100 is used to connect the copper conductor 10 and the aluminum conductor 20, and the insulating protective layer 200 is used to provide insulation protection at the copper-aluminum conductor connection. The main difference is that, based on Embodiment 1, this embodiment further designs the connector body 100, as follows:

[0047] Please see the appendix Figure 2 In this embodiment, the connector body 100 also includes a connecting portion 130 disposed between the conductive portion 110 and the insulating protection portion 120. When the conductive portion 110 wraps around the outer periphery of the winding conductor, the connecting portions 130 disposed on both sides of the conductive portion 110 can be fitted together, so that the conductive portion 110 and the connecting portion 130 completely wrap around the outer periphery of the winding conductor, preventing the outer periphery of the winding conductor from being exposed to the air due to incomplete wrapping and thus failing to obtain effective insulation protection. This effectively improves the sealing and insulation properties of the connector as a whole for wrapping the connection of the winding conductor. Moreover, although the connecting portion 130 protrudes from the outer periphery of the conductive portion 110 after being fitted together, it can be wrapped around the outer periphery of the conductive portion 110 along with the pressing and fitting of the insulating protection portion 120, forming multiple layers of wrapping around the connection of the winding conductor, thereby further effectively improving the sealing and insulation properties of the connector as a whole for wrapping the connection of the winding conductor. To further optimize the overall structure of the connector, preferably, the connecting part 130 is a rectangular connecting part structure, and its large end face forms an angle α with the two end faces of the conductive part 110, 75°≤α≤105°, that is, the angle formed between the large end face of the connecting part 130 and the two end faces of the conductive part 110 is between 75° and 105°; when the connecting parts 130 located on both sides of the conductive part 110 are fitted together, an included angle of ≤30° can be formed, which effectively increases the area of ​​the connecting parts 130 in the subsequent crimping process, so as to ensure the tightness and fit of the connecting parts 130 wrapped around the outer periphery of the winding wire, and further effectively improve the overall safety and insulation of the connector.

[0048] The motor winding conductor insulation connector of this embodiment, based on embodiment 1, further designs and optimizes the connector body 100, which can further improve the overall safety and insulation of the connector and further reduce the probability of electrochemical reaction at the winding conductor connection.

[0049] Example 3:

[0050] Please see the appendix Figure 1 and 2 The motor winding conductor insulation connector of this embodiment is the same as that of Embodiment 1 or 2, both including an integrally formed connector body 100. The connector body 100 includes a conductive portion 110 that wraps around the outer periphery of the winding conductor, and insulating protective portions 120 disposed on both sides of the conductive portion 110; and an insulating protective layer 200 disposed on the insulating protective portion 120. The connector body 100 is used to connect the copper conductor 10 and the aluminum conductor 20, and the insulating protective layer 200 is used to provide insulation protection at the copper-aluminum conductor connection. The main difference is that, based on Embodiment 1 or 2, this embodiment further designs the connector body 100, as follows:

[0051] Please see the appendix Figure 2 In this embodiment, the connector body 100 further includes a protrusion 140 disposed on the conductive portion 110 for achieving electrical connection between different winding wires. The protrusion 140 is designed to pierce the insulating varnish film on the surface of the winding wires when the connector is connected, so as to achieve connection and fixation of the two winding wires after the connector is pressed and formed. Further, the protrusion 140 is at least two ridges or teeth protruding from the inner circumferential surface of the conductive portion 110 along the axial direction of the winding wires. The protrusion 140 disposed along the axial direction of the winding wires can prevent the two winding wires from moving or loosening along their axial direction after the winding wires are connected, effectively improving the safety and stability of the overall connection of the winding wires by the connector. Preferably, when the protrusion 140 is a ridge, the ridge is a triangular ridge structure, a rectangular ridge structure, or a trapezoidal ridge structure; the specific selection and design can be made according to actual needs, as long as it can pierce the insulating varnish film on the surface of the winding wires when the connector is pressed and formed.

[0052] The motor winding conductor insulation connector of this embodiment, based on embodiment 1 or 2, has further designed and optimized the connector body 100, which can further effectively improve the overall safety and stability of the connector.

[0053] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0054] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0055] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0056] In this invention, unless otherwise expressly specified and limited, "above or below" the first feature may include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on" the first feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the first feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0057] Although the description of this utility model has been given in conjunction with the specific embodiments described above, it is obvious to those skilled in the art that many substitutions, modifications, and variations can be made based on the above description. Therefore, all such substitutions, modifications, and variations are included within the spirit and scope of the appended claims.

Claims

1. An insulating connector for motor winding conductors, characterized in that, include: The integrally formed connector body (100) is used for connecting different winding conductors; it includes a conductive part (110) that wraps around the outer periphery of the winding conductor in the middle, and an insulating protective part (120) disposed on both sides of the conductive part (110). An insulating protective layer (200) is disposed on the insulating protective part (120) for insulating protection at the connection of different winding conductors.

2. The motor winding conductor insulation connector according to claim 1, characterized in that, The conductive part (110) is a U-shaped conductive part, a semi-circular conductive part, or a 3 / 4 circle conductive part that is wrapped around the outer periphery of the winding wire.

3. The motor winding conductor insulation connector according to claim 1, characterized in that, The insulating protection part (120) is an arc-shaped insulating protection part that is similar in shape to the outer periphery of the winding conductor.

4. The motor winding conductor insulation connector according to claim 1, characterized in that, The connector body (100) also includes a connecting portion (130) disposed between the conductive portion (110) and the insulating protective portion (120).

5. The motor winding conductor insulation connector according to claim 4, characterized in that, The connecting part (130) is a rectangular connecting part structure, and its large end face forms an angle α with the two end faces of the conductive part (110), and 75°≤α≤105°.

6. The motor winding conductor insulation connector according to claim 1, characterized in that, The connector body (100) also includes a protrusion (140) disposed on the conductive part (110) for electrical connection between different winding wires.

7. The motor winding conductor insulation connector according to claim 6, characterized in that, The protrusion (140) is at least two protruding ridges or sharp teeth that protrude from the inner circumferential surface of the conductive part (110) along the axial direction of the winding conductor.

8. The motor winding conductor insulation connector according to claim 7, characterized in that, The protruding edge can be a triangular protruding edge structure, a rectangular protruding edge structure, or a trapezoidal protruding edge structure.

9. The motor winding conductor insulation connector according to claim 1, characterized in that, The width of the connector body (100) is at least 2 mm.

10. The motor winding conductor insulation connector according to claim 1, characterized in that, The insulating protective layer (200) is formed by coating an insulating material onto the side of the insulating protective part (120) away from the conductive part (110), and the coating thickness is at least 0.3 mm.

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