A double-piercing pin structure of a motor enameled wire based on a delta connection

Abstract

The utility model relates to motor pin technology field, and disclose a kind of double puncture formula's pin structure of motor enameled wire based on delta connection, including pin, isolation seat component, the pin is composed of upper end structure, middle end structure and lower end structure, and the inner wall of lower end structure bottom is provided with adjacent puncture terminal, the setting quantity of the pin is not less than two and along the isolation seat component circumferential suit in isolation seat component outer ring structure inside.The utility model provides pin in subsequent joint use process with isolation seat component can improve connection efficiency, the puncture formula connection effect and the puncture terminal of self setting of pin itself, can realize quick electrical connection, without stripping cable insulation layer in advance, this not only simplifies installation process, also significantly improves work efficiency, the pin of the utility model setting in the assembly process of subsequent isolation seat component and corresponding motor, can enhance stability, by puncture pin technology, the fixation of winding is more firm.

Description

Technical Field

[0001] This utility model relates to the field of motor pin technology, specifically a pin structure based on double-piercing type of enameled wire in a delta-connected motor. Background Technology

[0002] Currently, there are generally two basic wiring methods for motors: star connection and delta connection. In a star connection, the ends of the three-phase windings are connected together to form a common terminal. Motors with this connection have low output power under small loads. In a delta connection, one end of each phase winding is connected to one end of another phase, forming a closed delta circuit. Both methods leave three or six enameled wire ends after winding that need to be connected to the three-phase output of the driver. The most common connection method is soldering.

[0003] However, the quality of solder is highly dependent on the skill level of the operator. Improper operation during soldering may lead to problems such as cold solder joints and poor solder joints, affecting the reliability of electrical connections. The high temperature generated during the soldering process of existing soldering methods may cause thermal damage to surrounding components or materials, especially many plastic parts and heat-sensitive components such as our skeletons and drives. Soldered connections also have drawbacks such as difficulty in disassembly and maintenance and sensitivity to environmental impact. Utility Model Content

[0004] This invention provides a double-piercing pin structure for enameled wire of a delta-connected motor, which solves the problems mentioned in the background art.

[0005] This utility model provides the following technical solution: a double-piercing pin structure based on the enameled wire of a delta-connected motor, including pins and an isolation seat assembly. The pins are composed of an upper structure, a middle structure and a lower structure, and the inner wall of the bottom of the lower structure is provided with adjacent piercing terminals. The number of pins is not less than two and they are fitted around the outer ring structure of the isolation seat assembly along the circumference of the isolation seat assembly.

[0006] Preferably, the pin and the isolating seat assembly are integrally molded by injection molding.

[0007] Preferably, the piercing terminal is specifically configured as a triangle, and a snap-fit ​​space is provided at the bottom of the lower structure.

[0008] Preferably, both sides of the lower structure are fitted with protective covers, and there is a clearance space between two adjacent protective covers.

[0009] Preferably, a first clearance groove is provided at the front end of one side of each of the two protective covers, and a first Z-shaped spring plate is nested between the two intersecting first clearance grooves.

[0010] Preferably, a second clearance groove is provided at the rear end of each of the two protective covers on one side, and a second Z-shaped spring plate is nested between the two intersecting second clearance grooves.

[0011] Preferably, the inner wall of the opening of the first relief groove and the inner wall of the opening of the second relief groove are each fixed with two vertically opposite semi-cylindrical rubber strips, and the two semi-cylindrical rubber strips form an auxiliary space that can engage and limit the end of the first relief groove or the end of the second relief groove.

[0012] Preferably, the first Z-shaped spring plate has an assembly groove at the center of its front end, and the second Z-shaped spring plate has two concentric arc-shaped connecting plates fixed at the center of its front end. The surfaces of the two arc-shaped connecting plates are provided with concentric threads, and one end of the two arc-shaped connecting plates is connected to an internal threaded cap by a common thread. The side wall of the rear end of the internal threaded cap can be engaged with the inside of the assembly groove.

[0013] This utility model has the following beneficial effects:

[0014] 1. This utility model provides a pin that can improve connection efficiency when used in conjunction with the isolating seat assembly. The pin's own piercing connection effect and its own piercing terminal enable rapid electrical connection without the need to pre-strip the cable insulation layer. This not only simplifies the installation process but also significantly improves work efficiency.

[0015] 2. The pins provided in this utility model can enhance stability during the subsequent assembly of the isolation seat assembly and the corresponding motor. By using the pin piercing technology, the winding is more firmly fixed, reducing vibration and displacement during operation and enhancing the stability of motor operation.

[0016] 3. The pins provided in this utility model can optimize electrical performance during the subsequent assembly of the isolation seat assembly and the corresponding motor. That is, by directly contacting the conductor to form an electrical connection, the pin piercing technology helps to reduce contact resistance, thereby improving the electrical characteristics of the entire system and increasing the energy efficiency ratio.

[0017] 4. The two protective covers, the first clearance groove, the second clearance groove, the first Z-shaped spring plate, and the second Z-shaped spring plate provided in this utility model form an auxiliary device. During the subsequent transportation and transfer of the assembly formed by the insert and the isolation seat, the auxiliary device can provide protection and structural reinforcement for the lower structure inside the insert, thereby significantly reducing the probability of the lower structure being damaged by external pressure during transportation. Attached Figure Description

[0018] Figure 1 This is a front view schematic diagram of the structure of this utility model;

[0019] Figure 2This is an enlarged schematic diagram of the structure pin of this utility model;

[0020] Figure 3 The structure of this utility model Figure 2 Enlarged view of point A in the middle;

[0021] Figure 4 This is a front view schematic diagram of the protective cover structure of this utility model;

[0022] Figure 5 This is a front view schematic diagram of the first Z-shaped spring plate of the present invention.

[0023] Figure 6 This is a three-dimensional schematic diagram of the first Z-shaped spring plate of this utility model.

[0024] Figure 7 The structure of this utility model Figure 5 Enlarged view of point B in the middle;

[0025] Figure 8 This is a rear view schematic diagram of the second Z-shaped spring plate of the present invention;

[0026] Figure 9 This is a three-dimensional schematic diagram of the second Z-shaped spring plate of this utility model.

[0027] Figure 10 The structure of this utility model Figure 8 Enlarged diagram of point C in the middle.

[0028] In the diagram: 1. Pin; 2. Isolation seat assembly; 3. Upper structure; 4. Middle structure; 5. Lower structure; 6. Piercing terminal; 7. Protective cover; 8. Semi-cylindrical rubber strip; 9. First clearance groove; 10. Second clearance groove; 11. First Z-shaped spring plate; 12. Second Z-shaped spring plate; 13. Arc-shaped connecting plate; 14. Internal threaded cover; 15. Assembly groove. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Please see Figures 1-3A double-piercing pin structure based on the enameled wire of a delta-connected motor includes a pin 1 and an isolation seat assembly 2. The pin 1 is composed of an upper structure 3, a middle structure 4 and a lower structure 5. The inner wall of the bottom of the lower structure 5 is provided with adjacent piercing terminals 6. The number of pins 1 is not less than two and they are fitted around the outer ring structure of the isolation seat assembly 2 along the circumference of the isolation seat assembly 2.

[0031] The pin 1 and the isolating seat assembly 2 are integrally molded by injection molding to ensure the connection strength of the structure. The piercing terminal 6 is specifically set as a triangle, and a snap-fit ​​space is provided in the bottom of the lower structure 5.

[0032] When using the device, if the isolating bracket assembly 2 needs to be installed on the corresponding motor, simply align the isolating bracket assembly 2 with the corresponding motor angle, and then use a pressing device to press it in. After completion, the connection between the pin 1 and the three-phase winding inside the corresponding motor is completed. The piercing terminal 6 inside the pin 1 can achieve a quick electrical connection without having to strip the cable insulation layer beforehand. This not only simplifies the installation process but also significantly improves work efficiency.

[0033] Please see Figures 4-8 The lower structure 5 is fitted with protective covers 7 on both sides, and there is a clearance space between two adjacent protective covers 7. The front end of one side of each of the two protective covers 7 is provided with a first clearance groove 9, and a first Z-shaped spring plate 11 is nested between the two intersecting first clearance grooves 9. The rear end of one side of each of the two protective covers 7 is provided with a second clearance groove 10, and a second Z-shaped spring plate 12 is nested between the two intersecting second clearance grooves 10.

[0034] In use, considering that the bottom structure of the isolation seat assembly 2 is easily damaged by pressure during transportation after the pin 1 and the isolation seat assembly 2 are assembled, two protective covers 7 are used to first protect the bottom structure of the isolation seat assembly 2 to achieve initial scratch and pressure protection. Then, the combination structure of the first Z-shaped spring plate 11 and the second Z-shaped spring plate 12 is used to further enhance the protection strength of the two protective covers 7 for the bottom structure of the lower structure 5, and further reduce the probability of the lower structure 5 being damaged by external pressure during transportation.

[0035] Please see Figure 7 The inner wall of the opening of the first relief groove 9 and the inner wall of the opening of the second relief groove 10 are each fixed with two vertically opposite semi-cylindrical rubber strips 8, and the two semi-cylindrical rubber strips 8 form an auxiliary space that can engage and limit the end of the first relief groove 9 or the end of the second relief groove 10.

[0036] In use, considering the need for anti-slip when the protective cover 7 is fitted with the first Z-shaped spring plate 11 or the second Z-shaped spring plate 12, the two semi-cylindrical rubber strips 8 are used to form a locking structure in the first clearance groove 9 or the second clearance groove 10. During the subsequent process of fitting the end of the first Z-shaped spring plate 11 into the first clearance groove 9, it is necessary to forcefully squeeze through the two semi-cylindrical rubber strips 8 first. The two semi-cylindrical rubber strips 8 deform and make room. After the end of the first Z-shaped spring plate 11 is completely fitted into the first clearance groove 9, the two semi-cylindrical rubber strips 8 reset, forming a sealing and limiting position on the end of the first Z-shaped spring plate 11.

[0037] Please see Figure 9 The first Z-shaped spring plate 11 has an assembly groove 15 at the front center. The second Z-shaped spring plate 12 has two concentric arc-shaped connecting plates 13 fixed at the front center. The surfaces of the two arc-shaped connecting plates 13 are threaded with concentricity. One end of the two arc-shaped connecting plates 13 is connected to an internal thread cover 14 by a common thread. The side wall of the rear end of the internal thread cover 14 can be snapped into the inside of the assembly groove 15.

[0038] In use, considering the connection strength between the first Z-shaped spring plate 11 and the second Z-shaped spring plate 12, the threaded connection between the inner threaded cover 14 and the two arc-shaped connecting plates 13 is used to improve the connection strength between the middle part of the first Z-shaped spring plate 11 and the middle part of the second Z-shaped spring plate 12. After the inner threaded cover 14 is locked to the maximum stroke, it will be engaged with the assembly groove 15.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Additionally, in the accompanying drawings of this utility model, the fill patterns are merely for distinguishing layers and do not constitute any other limitation.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A double-piercing pin structure based on enameled wire of a delta-connected motor, comprising pins (1) and an isolation seat assembly (2), characterized in that: The pin (1) is composed of an upper structure (3), a middle structure (4) and a lower structure (5), and the inner wall of the bottom of the lower structure (5) is provided with adjacent piercing terminals (6). The number of the pins (1) is not less than two and they are fitted around the outer ring structure of the isolation seat assembly (2) along the circumference of the isolation seat assembly (2).

2. The double-piercing pin structure based on the enameled wire of a delta-connected motor according to claim 1, characterized in that: The pin (1) and the isolation seat assembly (2) are integrally molded by injection molding.

3. The double-piercing pin structure based on the enameled wire of a delta-connected motor according to claim 1, characterized in that: The piercing terminal (6) is specifically designed as a triangle, and the bottom of the lower structure (5) is provided with a snap-fit ​​space.

4. The double-piercing pin structure based on the enameled wire of a delta-connected motor according to claim 1, characterized in that: The lower structure (5) is fitted with protective covers (7) on both sides, and there is a clearance space between two adjacent protective covers (7).

5. The double-piercing pin structure based on the enameled wire of a delta-connected motor according to claim 4, characterized in that: The front end of each of the two protective covers (7) is provided with a first clearance groove (9), and a first Z-shaped spring plate (11) is nested between the two intersecting first clearance grooves (9).

6. The double-piercing pin structure based on the enameled wire of a delta-connected motor according to claim 5, characterized in that: The rear ends of both protective covers (7) are provided with second clearance grooves (10), and a second Z-shaped spring plate (12) is nested between the two intersecting second clearance grooves (10).

7. The double-piercing pin structure based on the enameled wire of a delta-connected motor according to claim 6, characterized in that: The inner wall of the opening of the first relief groove (9) and the inner wall of the opening of the second relief groove (10) are each fixed with two vertically opposite semi-cylindrical rubber strips (8), and an auxiliary space is formed between the two semi-cylindrical rubber strips (8) that can engage and limit the end of the first relief groove (9) or the end of the second relief groove (10).

8. The double-piercing pin structure based on the enameled wire of a delta-connected motor according to claim 6, characterized in that: The first Z-shaped spring plate (11) has an assembly groove (15) at the middle of its front end. The second Z-shaped spring plate (12) has two concentric arc-shaped connecting plates (13) fixed at the middle of its front end. The surfaces of the two arc-shaped connecting plates (13) are provided with concentric threads. One end of the two arc-shaped connecting plates (13) is connected to an internal thread cover (14) by a common thread. The side wall of the rear end of the internal thread cover (14) can be snapped into the interior of the assembly groove (15).

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