A frequency converter transformer output pin structure

Abstract

This utility model discloses a structure for the output pins of a frequency converter transformer, specifically a frequency converter transformer pin structure. It includes a frequency converter transformer with output pins. A copper sleeve is fitted over the output pins, and an inlet groove is formed on the side wall of the copper sleeve to facilitate the assembly of the output pins within the sleeve. The inner surface of the inlet groove is rounded to prevent cuts to the output pins. It also includes a limiting component to prevent the inlet groove from gradually increasing in size, and this limiting component is located on the copper sleeve. The limiting component includes a ring, through which the copper sleeve passes. An annular rubber pad is fixedly installed on the inner surface of the ring, and the inner surface of the annular rubber pad is in close contact with the outer surface of the copper sleeve. This utility model improves the strength of the frequency converter transformer pins and enhances their resistance to deformation.

Description

Technical Field

[0001] This utility model relates to the field of frequency converter transformer technology, specifically to a frequency converter transformer output pin structure. Background Technology

[0002] A variable frequency transformer (VFD) is a new type of flexible AC power transmission system equipment capable of connecting to asynchronous power grids. It integrates technologies such as transformers, phase shifters, hydro generators, doubly-fed induction generators, and DC drives. Its core component is a rotary transformer with single-phase windings on both the stator and rotor sides. By adjusting the phase shift of the rotor's magnetic field relative to the stator's magnetic field through a DC motor drive system, the magnitude and direction of the power output through the VFD are controlled.

[0003] Currently, after the frequency converter transformer coil is wound onto the bobbin by a winding machine, its lead-out pins are usually tinned using a soldering machine. Then, workers pass the tinned lead-out pins through corresponding holes on the PCB board and solder them again to connect them to the PCB board. This method is currently the most widely used in production. However, this method has the following drawbacks:

[0004] 1. The soldered pins consist of wires and solder, resulting in low physical strength and poor resistance to deformation;

[0005] 2. Due to limitations in the soldering process, defects such as cold solder joints, insufficient solder, and soldering deformation often occur, resulting in losses of manpower and resources.

[0006] 3. Due to the above constraints, the quality of soldered pins is often not high, and problems such as desoldering and difficulty in perforation may occur when assembling with the PCB board.

[0007] Based on the above, a variable frequency transformer output pin structure is invented. Utility Model Content

[0008] To solve the above-mentioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution:

[0009] A variable frequency transformer output pin structure includes a variable frequency transformer, wherein the variable frequency transformer is provided with output pins and the output pins are fitted with copper sleeves.

[0010] As a preferred embodiment of the output pin structure of the frequency converter transformer described in this utility model, the side wall of the copper sleeve is provided with an inlet groove to facilitate the assembly of the output pin in the copper sleeve.

[0011] In a preferred embodiment of the output pin structure of the frequency converter transformer described in this utility model, the inner surface of the inlet slot is set as an arc surface to avoid cutting the output pin.

[0012] As a preferred embodiment of the output pin structure of the frequency converter transformer described in this utility model, it further includes:

[0013] A limiting component is used to prevent the cable tray from gradually increasing in size, and the limiting component is located on the copper sleeve.

[0014] In a preferred embodiment of the frequency converter transformer output pin structure described in this utility model, the limiting component includes:

[0015] The copper sleeve passes through the circular ring;

[0016] An annular rubber pad is fixedly installed on the inner surface of a ring, and the inner surface of the annular rubber pad is in close contact with the outer surface of the copper sleeve.

[0017] As a preferred embodiment of the output pin structure of the frequency converter transformer described in this utility model, both ends of the ring are provided as bevels to facilitate the insertion of the copper sleeve into the ring.

[0018] In a preferred embodiment of the frequency converter transformer output pin structure described in this utility model, the limiting component includes:

[0019] The first connecting ring is fixedly installed on the left side of the copper sleeve;

[0020] The second connecting ring is fixedly installed on the right side of the copper sleeve;

[0021] A rope, one end of which is tied to a first connecting ring, and the other end of which is tied to a second connecting ring via a wire inlet groove.

[0022] Compared with existing technologies:

[0023] 1. Improved pin strength of frequency converter transformer, resulting in stronger resistance to deformation;

[0024] 2. At the same time, since copper bushings are a good material for soldering, the soldering connection is greatly improved;

[0025] 3. Due to the high strength of copper sleeves, the probability of defects is greatly reduced when used as pins and PCB board assemblies. Moreover, they are easier to pass through than soldered cables, greatly improving production efficiency and increasing production capacity. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0027] Figure 2 This is a schematic diagram of the copper sleeve structure of this utility model;

[0028] Figure 3This is a front view schematic diagram of the structure of Embodiment 2 of this utility model;

[0029] Figure 4 This is a top view of the structure of Embodiment 2 of this utility model;

[0030] Figure 5 This is a three-dimensional structural schematic diagram of Embodiment 2 of the present invention;

[0031] Figure 6 This is a front view schematic diagram of the structure of Embodiment 3 of this utility model;

[0032] Figure 7 This is a top view of the structure of Embodiment 3 of this utility model.

[0033] In the diagram: frequency converter 10, output pin 20, copper sleeve 30, ring 40, annular rubber pad 41, first connecting ring 50, second connecting ring 51, rope 52. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0035] Example 1, please refer to Figures 1-2 :

[0036] This utility model provides a variable frequency transformer output pin structure, including a variable frequency transformer 10, an output pin 20 on the variable frequency transformer 10, and a copper sleeve 30 fitted onto the output pin 20. The side wall of the copper sleeve 30 has an inlet groove to facilitate the assembly of the output pin 20 within the copper sleeve 30. The inner surface of the inlet groove is rounded to prevent cuts to the output pin 20. The output pin 20 is formed by winding a cable around the frame of the variable frequency transformer 10. Furthermore, the external dimensions of the copper sleeve 30 are adapted to the holes on the PCB.

[0037] In practical use, those skilled in the art will use thermal expansion and contraction technology to make the lead pin 20 pass through the copper sleeve 30 so that the lead pin 20 can be assembled in the copper sleeve 30.

[0038] Example 2, please refer to Figures 3-5 :

[0039] Based on Embodiment 1, in order to prevent the inlet slot from gradually increasing in size, a limiting component is provided on the copper sleeve 30.

[0040] The limiting components include: a circular ring 40 and an annular rubber pad 41;

[0041] The copper sleeve 30 passes through the ring 40, and the annular rubber pad 41 is fixedly installed on the inner surface of the ring 40, with the inner surface of the annular rubber pad 41 in close contact with the outer surface of the copper sleeve 30. Both ends of the ring 40 are beveled to facilitate the insertion of the copper sleeve 30 into the ring 40. When the lead pin 20 is assembled into the copper sleeve 30, the annular rubber pad 41 will press the copper sleeve 30 into the ring 40 with an interference fit, thus preventing the inlet slot from gradually increasing in size. In addition, the installation sequence of the ring 40 can be adjusted according to the actual situation.

[0042] Example 3, please refer to Figures 6-7 :

[0043] The limiting assembly includes: a first connecting ring 50, a second connecting ring 51, and a rope 52;

[0044] A first connecting ring 50 is fixedly installed on the left side of the copper sleeve 30, and a second connecting ring 51 is fixedly installed on the right side of the copper sleeve 30. One end of the rope 52 is tied to the first connecting ring 50, and the other end of the rope 52 is tied to the second connecting ring 51 through the inlet groove. The rope 52 may include, but is not limited to, copper wire, steel wire rope, etc. When assembling the outlet pin 20 into the copper sleeve 30, one end of the rope 52 is first tied to the first connecting ring 50, and then the other end of the rope 52 is tied to the second connecting ring 51 through the inlet groove. This is to prevent the inlet groove from gradually increasing in size.

[0045] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A variable frequency transformer output pin structure, comprising a variable frequency transformer (10), wherein the variable frequency transformer (10) is provided with output pins (20), characterized in that, A copper sleeve (30) is fitted onto the outgoing pin (20); The side wall of the copper sleeve (30) is provided with an inlet groove so that the outlet pin (20) can be assembled in the copper sleeve (30); The inner surface of the inlet slot is designed as an arc surface to avoid cutting the outlet pin (20); Also includes: A limiting component is used to prevent the inlet slot from gradually increasing in size, and the limiting component is located on the copper sleeve (30).

2. The output pin structure of a frequency converter transformer according to claim 1, characterized in that, The limiting component includes: The ring (40) through which the copper sleeve (30) passes; An annular rubber pad (41) is fixedly installed on the inner surface of the ring (40), and the inner surface of the annular rubber pad (41) is in close contact with the outer surface of the copper sleeve (30).

3. The output pin structure of a frequency converter transformer according to claim 2, characterized in that, Both ends of the ring (40) are beveled to facilitate inserting the copper sleeve (30) into the ring (40).

4. The output pin structure of a frequency converter transformer according to claim 1, characterized in that, The limiting component includes: The first connecting ring (50) is fixedly installed on the left side of the copper sleeve (30); The second connecting ring (51) is fixedly installed on the right side of the copper sleeve (30). A rope (52), one end of which is tied to a first connecting ring (50), and the other end of which is tied to a second connecting ring (51) through a wire inlet groove.

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