Piercing terminal, wiring structure, and motor

Abstract

The utility model provides a kind of puncture formula terminal, wiring structure and motor.The puncture formula terminal includes: transition part, the transition part has first end and second end;First connecting part, the first connecting part is connected in the first end of the transition part, and it is substantially along first direction extension;Second connecting part, the second connecting part is connected in the second end of the transition part, and it is substantially along first direction extension;Wherein, the first connecting part, the transition part and the second connecting part between form a accommodating groove, the first connecting part towards the side of the second connecting part And / or the second connecting part towards the side of the first connecting part is provided with thorn structure.Utilize puncture formula terminal can realize the quick connection of the wire of stator winding and terminal board, it is favorable to simplify production procedure, reduce production cost, improve the quality and reliability of motor.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, and in particular to a piercing terminal, wiring structure, and motor. Background Technology

[0002] The stator assembly of an electric motor mainly consists of the stator core and the stator winding. The connection method between the wires in the stator winding and the terminal block (control circuit board) has always been a key factor affecting the production efficiency and quality of electric motors.

[0003] In current motor manufacturing processes, the connection between the stator winding conductors and the terminal block is mostly achieved through soldering. However, this method has several significant drawbacks. Specifically, the conductors must be pre-stripped before soldering, a process that not only increases the complexity of production but also easily damages the conductors during stripping, affecting their electrical performance. Furthermore, traditional soldering connections typically rely on a frame with pins to secure the conductors, undoubtedly increasing the number of components and further driving up production costs. More critically, the high temperatures generated during soldering can damage the conductor insulation and degrade the material properties around the solder joint, severely impacting the overall quality and reliability of the motor, shortening its lifespan, and increasing the failure rate. In addition, soldering connections are prone to incomplete soldering, requiring stator rework. During rework, the high temperatures can cause secondary damage to motor components, even rendering the stator unusable, severely impacting the yield and reliability of the finished motor.

[0004] In addition, some stator winding conductors are also connected to the terminal block via piercing terminals, but the current piercing terminal structure is complex and requires a specific wiring tray, resulting in high costs.

[0005] The content of the background section is merely the technology known to the inventor and does not necessarily represent the prior art in this field. Utility Model Content

[0006] To address one or more deficiencies in the prior art, this utility model provides a piercing terminal, comprising: The transition portion has a first end and a second end; A first connecting portion is connected to a first end of the transition portion and extends generally along a first direction; The second connecting portion is connected to the second end of the transition portion and extends generally along the first direction; A receiving groove is formed between the first connecting portion, the transition portion and the second connecting portion, and a spike structure is provided on the side of the first connecting portion facing the second connecting portion and / or the side of the second connecting portion facing the first connecting portion.

[0007] According to one aspect of the present invention, the spike structure includes one or more protruding ridges, wherein the protruding ridges extend to one end of the first connecting portion away from the transition portion, or extend to one end of the second connecting portion away from the transition portion; or... The spike structure includes one or more cones.

[0008] According to one aspect of the present invention, the first connecting portion is provided with an anti-detachment protrusion on the side opposite to the second connecting portion and / or the second connecting portion is provided with an anti-detachment protrusion on the side opposite to the first connecting portion.

[0009] According to one aspect of the present invention, the transition portion is configured as an arc-shaped structure.

[0010] This utility model also provides a wiring structure, including: A junction box, wherein a first groove and a second groove are provided on the outer edge of the junction box; The first terminal is disposed in the first groove; The second terminal is disposed in the second groove; and A wire includes a conductor and an insulating layer, the insulating layer covering the conductor; Wherein, the first terminal and the second terminal are the piercing terminals described above; One end of the wire is engaged in the receiving groove of the first terminal, and the other end of the wire is engaged in the receiving groove of the second terminal. The spike structure pierces the insulation layer and comes into contact with the conductor.

[0011] According to one aspect of the present invention, an adhesive is provided between the first terminal and the terminal block, and an adhesive is provided between the second terminal and the terminal block.

[0012] According to one aspect of the present invention, the wiring structure further includes an insulating frame, the insulating frame being disposed on one side of the wiring board, and a first guide groove and a second guide groove being disposed at one end of the insulating frame near the wiring board. The wire is wound around the insulating frame, with one end of the wire passing through the first guide groove and being inserted into the receiving groove of the first terminal; the other end of the wire passes through the second guide groove and is inserted into the receiving groove of the second terminal.

[0013] According to one aspect of the present invention, the insulating frame is further provided with a wiring groove, the first guide groove and the second guide groove are both connected to the wiring groove, and a portion of the wire is located in the wiring groove.

[0014] According to one aspect of the present invention, both the first terminal and the second terminal are interference-fitted with the wire.

[0015] This utility model also provides a motor, including the wiring structure described above.

[0016] Compared with existing technologies, the embodiments of this utility model provide a piercing terminal, a wiring structure, and a motor. The piercing terminal can be used independently, significantly reducing costs. This piercing terminal enables rapid connection between the stator winding wires and the terminal block, simplifying production processes, reducing production costs, and improving motor quality and reliability. Specifically, the spiked structure of the piercing terminal can directly pierce the insulation layer of the wire, eliminating the need for pre-stripping and the reliance on a pin-supported frame. This simplifies the production process, reduces damage to the wires caused by stripping, lowers production costs, and avoids the insulation layer damage and material performance degradation problems caused by high temperatures in traditional soldering connections. It also prevents cold solder joints, significantly improving motor quality and reliability. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0018] Figure 1 A schematic diagram of a piercing terminal according to an embodiment of the present invention is shown; Figure 2 A schematic diagram of a wiring structure according to an embodiment of the present invention is shown; Figure 3 It shows Figure 2 A magnified view of a portion of the image; Figure 4 A schematic diagram of a first terminal, a second terminal, and a portion of a wiring board according to an embodiment of the present invention is shown; Figure 5 A cross-sectional view of a wire according to an embodiment of the present invention is shown; Figure 6 A schematic diagram of an insulating frame according to an embodiment of the present invention is shown. Detailed Implementation

[0019] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0020] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows for mutual communication; 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.

[0022] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can 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 top" of the second 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 second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0023] The following disclosure provides many different embodiments or examples for implementing various structures of this invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0024] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0025] Figure 1 A schematic diagram of a piercing terminal 100 according to an embodiment of the present invention is shown below, in conjunction with... Figure 1 Provide a detailed description.

[0026] like Figure 1 As shown, the piercing terminal 100 mainly includes a first connecting portion 110, a transition portion 120, and a second connecting portion 130. The transition portion 120 has a first end 121 and a second end 122. The first connecting portion 110 is connected to the first end 121 of the transition portion 120, and the second connecting portion 130 is connected to the second end 122 of the transition portion 120. Both the first connecting portion 110 and the second connecting portion 130 extend substantially along a first direction, thereby forming an open receiving groove 140 between the first connecting portion 110, the transition portion 120, and the second connecting portion 130, which allows wires to be inserted. Specifically, when the angle between the actual extending direction of the first connecting portion 110 and the first direction is between [-10°, +10°], the first connecting portion 110 can be considered to extend substantially along the first direction; similarly, when the angle between the actual extending direction of the second connecting portion 130 and the first direction is between [-10°, +10°], the second connecting portion 130 can be considered to extend substantially along the first direction. Preferably, both the first connecting portion 110 and the second connecting portion 130 extend strictly along the first direction.

[0027] Furthermore, spike structures 150 are provided on both the side of the first connecting portion 110 facing the second connecting portion 130 and the side of the second connecting portion 130 facing the first connecting portion 110. When the wire is inserted into the receiving groove 140, these spike structures 150 can easily pierce the insulation layer of the wire, achieving an electrical connection between the piercing terminal 100 and the wire. At the same time, these spike structures 150 can also effectively fix the wire, preventing it from falling out of the receiving groove 140. Those skilled in the art will readily understand that in some embodiments, spike structures 150 may be provided only on the side of the first connecting portion 110 facing the second connecting portion 130, or only on the side of the second connecting portion 130 facing the first connecting portion 110, which can also effectively pierce the insulation layer of the wire and achieve an electrical connection between the piercing terminal 100 and the wire.

[0028] According to one embodiment of the present invention, such as Figure 1 As shown, the spike structure 150 may include multiple protrusions 151, which are spaced apart on the surface of the corresponding first connecting portion 110 or second connecting portion 130. The protrusions 151 on the first connecting portion 110 extend to the end of the first connecting portion 110 away from the transition portion 120, and the protrusions 151 on the second connecting portion 130 extend to the end of the second connecting portion 130 away from the transition portion 120. It should be noted that the cross-sectional shape of the protrusions 151 can be set to a sharp shape such as a triangle to ensure that when the wire is inserted into the receiving groove 140, the end of the protrusion 151 can directly pierce the insulation layer of the wire, thereby achieving an electrical connection between the piercing terminal 100 and the wire. Furthermore, considering that the width D of the piercing terminal 100 is small, the width d of the protrusion 151 is even smaller, and the insulation layer of the wire is relatively thin, the cross-sectional shape of the protrusions 151 can also be set to a trapezoidal, rectangular, or semi-circular shape, etc., which can also successfully pierce the insulation layer of the wire. Optionally, the protruding ridge 151 can extend along the extension direction of the corresponding first connecting portion 110 or second connecting portion 130, which is beneficial for the processing of the protruding ridge 151. Furthermore, the extension direction of the protruding ridge 151 can also form a predetermined angle with the extension direction of the first connecting portion 110 or the second connecting portion 130, so that the protruding ridge 151 aligns with the insertion direction of the wire, thereby making it more advantageous to pierce the insulation layer of the wire. Those skilled in the art will readily understand that in other embodiments, the spike structure 150 may also include only one protruding ridge 151, which can also achieve an electrical connection between the piercing terminal 100 and the wire. In addition, in other embodiments, the spike structure 150 may also include one or more cones, such as conical or pyramidal shapes, which can also pierce the insulation layer of the wire and achieve an electrical connection between the piercing terminal 100 and the wire.

[0029] According to one embodiment of the present invention, such as Figure 1As shown, a plurality of anti-detachment protrusions 160 are provided on the side of the first connecting portion 110 facing away from the second connecting portion 130. These anti-detachment protrusions 160 may be, for example, barbs or raised dots. Correspondingly, a plurality of anti-detachment protrusions (not shown) are also provided on the side of the second connecting portion 130 facing away from the connecting portion. When the piercing terminal 100 is assembled onto the terminal block, the anti-detachment protrusions 160 can penetrate the terminal block, thereby ensuring a stable connection between the piercing terminal 100 and the terminal block.

[0030] According to one embodiment of the present invention, such as Figure 1 As shown, the transition portion 120 is configured with an arc-shaped structure. This design not only facilitates the rapid assembly of the piercing terminal 100, but also makes it easier to machine the mounting grooves (hereinafter referred to as the first groove and the second groove) on the terminal block for assembling the piercing terminal 100.

[0031] The piercing terminal 100 of this invention has a simple structure and low cost, and can be used to realize the electrical connection between a terminal block (circuit board) and wires. Specifically, the piercing terminal 100 can be stably connected to the terminal block with the help of anti-detachment protrusions 160 or adhesives, and can be electrically connected to the circuit structure in the terminal block. At the same time, the receiving groove 140 of the piercing terminal 100 can receive the wire, and its spike structure 150 can pierce the insulation layer of the wire and come into contact with the conductor, thereby realizing the electrical connection between the terminal block and the wire without stripping the wire. This not only simplifies the production process and reduces the damage to the wire caused by the wire stripping operation, thus lowering the production cost, but also avoids the problems of insulation layer damage and material performance deterioration caused by high temperature in traditional soldering connections, and eliminates the occurrence of cold solder joints.

[0032] Figure 2 A schematic diagram of a wiring structure 200 according to an embodiment of the present invention is shown. Figure 3 It shows Figure 2 A magnified view of a section, shown below. Figure 2 and Figure 3 Provide a detailed description.

[0033] like Figure 2 and Figure 3 As shown, the wiring structure 200 mainly includes a terminal block 210, a first terminal 220, a second terminal 230, and a wire 240. To clearly demonstrate the details of the wiring structure 200, Figure 2 Only the two ends of wire 240 are shown, and the middle part of wire 240 is omitted. Figure 4 A schematic diagram of a first terminal 220, a second terminal 230, and a portion of a terminal block 210 according to an embodiment of the present invention is shown, as follows. Figure 2 and Figure 4As shown, the terminal block 210 can be a PCB, which is roughly circular in shape. Its outer edge is provided with a first groove 211 and a second groove 212 at intervals. The shape of the first groove 211 and the second groove 212 is basically adapted to the outer contour of the piercing terminal 100 described above. Compared with the prior art, this terminal block 210 is easy to manufacture and can reduce or avoid the scrapping of fixed assets caused by process upgrades.

[0034] The first terminal 220 and the second terminal 230 adopt the piercing terminal 100 described above. The first terminal 220 is snapped into the first groove 211, and the second terminal 230 is snapped into the second groove 212. It should be noted that a circuit structure (not shown in the figure) is provided on the terminal block 210. The circuit structure may include, for example, a conductive metal layer printed on the terminal block 210 and electronic components coupled to the terminal block 210. The first terminal 220 and the second terminal 230 are electrically connected to the circuit structure respectively. Figure 5 A cross-sectional view of a wire 240 according to an embodiment of the present invention is shown. Figure 5 As shown, the wire 240 includes a conductor 241 and an insulating layer 242. The conductor 241 can be, for example, a metal wire such as copper or aluminum wire, and the insulating layer 242 can be a coating covering the surface of the conductor 241. Figure 2 and Figure 3 As shown, one end 243 of the wire 240 is snapped into the receiving groove 140 of the first terminal 220, and the other end 244 of the wire 240 is snapped into the receiving groove 140 of the second terminal 230. The spike structure 150 in the first terminal 220 / second terminal 230 pierces the insulation layer 242 of the wire 240 and comes into contact with the conductor 241, thereby realizing the electrical connection between the terminal block 210 (circuit structure) and the wire 240.

[0035] According to one embodiment of the present invention, such as Figure 2 As shown, an adhesive is provided between the first terminal 220 and the terminal block 210 to enhance the connection stability between the first terminal 220 and the terminal block 210 and reduce the possibility of the first terminal 220 detaching from the terminal block 210. Correspondingly, an adhesive is also provided between the second terminal 230 and the terminal block 210 to enhance the connection stability between the second terminal 230 and the terminal block 210 and reduce the possibility of the second terminal 230 detaching from the terminal block 210.

[0036] According to one embodiment of the present invention, such as Figure 2 As shown, the wiring structure 200 is also provided on the insulating frame 250 on the lower side of the wiring board 210. Figure 6 A schematic diagram of an insulating frame 250 according to an embodiment of the present invention is shown. Figure 2 , Figure 3 and Figure 6As shown, a first guide groove 251 and a second guide groove 252 are provided at the upper end of the insulating frame 250 (i.e., the end near the terminal block 210). The wire 240 is wound around the insulating frame 250 (for the application of the wiring structure 200 in the motor stator, the wire 240 is wound around both the insulating frame 250 and the iron core). One end 243 of the wire 240 passes through the first guide groove 251 and is inserted into the receiving groove 140 of the first terminal 220, while the other end 244 of the wire 240 passes through the second guide groove 252 and is inserted into the receiving groove 140 of the second terminal 230. By adopting the above design, the orderly arrangement of the wire 240 can be achieved, reducing the possibility of errors during assembly, ensuring a stable connection between the wire 240 and the first terminal 220 and the second terminal 230, and reducing the risk of failure due to loose or poor contact of the wire 240.

[0037] According to one embodiment of the present invention, such as Figure 6 As shown, a wiring groove 253 is also provided on the insulating frame 250, and a portion of the wire 240 is located in the wiring groove 253. The first guide groove 251 and the second guide groove 252 are located on the same side of the wiring groove 253, and both the first guide groove 251 and the second guide groove 252 are connected to the wiring groove 253. By adopting the above design, the orderly arrangement of the wire 240 can be achieved, avoiding phenomena such as tangling, knotting or loosening of the wire 240 during assembly, thereby improving assembly efficiency and reliability, and also facilitating subsequent maintenance and inspection.

[0038] According to one embodiment of the present invention, such as Figure 2 As shown, the first terminal 220 is interference-fitted with the wire 240 to ensure the connection stability between the first terminal 220 and the wire 240 and to prevent the wire 240 from detaching from the first terminal 220. Correspondingly, the second terminal 230 is also interference-fitted with the wire 240 to ensure the connection stability between the second terminal 230 and the wire 240 and to prevent the wire 240 from detaching from the second terminal 230. Preferably, the piercing depth of the spike structure 150 is 60-80% of the tooth height to further ensure the connection stability between the terminals (first terminal 220, second terminal 230) and the wire 240.

[0039] According to one embodiment of the present invention, such as Figure 2As shown, multiple first grooves 211 and multiple second grooves 212 can be provided on the outer edge of the terminal block 210, wherein the first grooves 211 and the second grooves 212 alternate with each other. A first terminal 220 is provided in each first groove 211, and a second terminal 230 is provided in each second groove 212. Correspondingly, multiple wires 240 and insulating frames 250 are also provided. Each wire 240 is wound around the corresponding insulating frame 250 and is electrically connected to the terminal block 210 through the corresponding first terminal 220 and second terminal 230.

[0040] The wiring structure 200 of this invention can be applied to motors, enabling rapid connection between the stator winding conductor 240 and the terminal block 210. This simplifies production processes, reduces production costs, and improves motor quality and reliability. Specifically, the wiring structure 200 employs a piercing terminal. The spike structure 150 of the piercing terminal can directly pierce the insulation layer 242 of the conductor 240, achieving conductivity between the conductor 240 and the terminal block 210. This eliminates the need for pre-stripping of the conductor 240 and the reliance on a pin-supported frame, simplifying the production process, reducing damage to the conductor 240 caused by stripping, and lowering production costs. Simultaneously, it avoids the problems of insulation layer 242 damage and material performance deterioration caused by high temperatures in traditional soldering connections, preventing cold solder joints and significantly improving motor quality and reliability. Furthermore, this wiring structure 200 also helps optimize the axial space of the motor, improves motor rigidity, and enhances vibration performance.

[0041] An embodiment of this utility model also provides a motor, which includes the wiring structure 200 described above.

[0042] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A piercing terminal, characterized in that, include: The transition portion has a first end and a second end; A first connecting portion is connected to a first end of the transition portion and extends generally along a first direction; The second connecting portion is connected to the second end of the transition portion and extends generally along the first direction; A receiving groove is formed between the first connecting portion, the transition portion and the second connecting portion, and a spike structure is provided on the side of the first connecting portion facing the second connecting portion and / or the side of the second connecting portion facing the first connecting portion.

2. The piercing terminal according to claim 1, characterized in that, The spike structure includes one or more protruding ridges, wherein the protruding ridges extend to the end of the first connecting portion away from the transition portion, or extend to the end of the second connecting portion away from the transition portion; or... The spike structure includes one or more cones.

3. The piercing terminal according to claim 1, characterized in that, The first connecting part is provided with an anti-detachment protrusion on the side opposite to the second connecting part and / or the second connecting part is provided with an anti-detachment protrusion on the side opposite to the first connecting part.

4. The piercing terminal according to claim 1, characterized in that, The transition section is configured as an arc-shaped structure.

5. A wiring structure, characterized in that, include: A junction box, wherein a first groove and a second groove are provided on the outer edge of the junction box; The first terminal is disposed in the first groove; The second terminal is disposed in the second groove; as well as A wire includes a conductor and an insulating layer, the insulating layer covering the conductor; Wherein, the first terminal and the second terminal are piercing terminals as described in any one of claims 1-4; One end of the wire is engaged in the receiving groove of the first terminal, and the other end of the wire is engaged in the receiving groove of the second terminal. The spike structure pierces the insulation layer and comes into contact with the conductor.

6. The wiring structure according to claim 5, characterized in that, An adhesive is provided between the first terminal and the terminal block, and an adhesive is provided between the second terminal and the terminal block.

7. The wiring structure according to claim 5, characterized in that, The wiring structure also includes an insulating frame, which is disposed on one side of the wiring board. The end of the insulating frame near the wiring board is provided with a first guide groove and a second guide groove. The wire is wound around the insulating frame, with one end of the wire passing through the first guide groove and being inserted into the receiving groove of the first terminal; the other end of the wire passes through the second guide groove and is inserted into the receiving groove of the second terminal.

8. The wiring structure according to claim 7, characterized in that, The insulating frame is also provided with a wiring groove, and the first guide groove and the second guide groove are both connected to the wiring groove, with a portion of the wire located in the wiring groove.

9. The wiring structure according to any one of claims 5-8, characterized in that, Both the first terminal and the second terminal are interference-fitted with the wire.

10. An electric motor, characterized in that, Includes the wiring structure described in any one of claims 5-9.

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