Encapsulated transformer with mounting hole

Abstract

The utility model discloses a potting transformer with a mounting hole. The winding framework is mounted in the shell, the first winding groove and the second winding groove are formed in the winding framework and used for winding a first copper wire winding and a second copper wire winding respectively, the silicon steel sheet modules are mounted on the winding framework in a stacked and sleeved mode, and the shell is filled with the epoxy resin insulation paste. A plurality of pins extending out of the epoxy resin insulation paste are arranged on the winding framework, and a first hanging lug and a second hanging lug which are used for fixing are arranged at the two ends of the shell. Epoxy resin insulation glue is used for filling and sealing in the shell, the silicon steel sheet module is separated from the winding framework, the first copper wire winding and the second copper wire winding through the epoxy resin insulation glue, and the epoxy resin insulation glue wraps the first copper wire winding and the second copper wire winding, so that insulation glue paper does not need to be pasted on a framework wall of the winding framework; the step of pasting insulating gummed paper is omitted, the periphery of the first copper wire winding and the periphery of the second copper wire winding do not need to be wrapped with the insulating gummed paper, the production technology is simplified, efficiency is improved, and automatic production is facilitated.

Description

Technical field:

[0001] The utility model relates to the technical field of transformers, in particular to a potting transformer with a mounting hole. Background technology:

[0002] A transformer is an electrical device that uses the principle of electromagnetic induction to change AC voltage. It is widely used in power systems and various electronic devices. Its main components include a primary copper wire winding, a secondary copper wire winding, and an iron core. Energy is transferred between the windings through electromagnetic induction. The core functions of a transformer are voltage conversion, current conversion, and impedance conversion. It also provides electrical isolation and voltage stabilization, ensuring the safety and stability of power transmission and device power supply.

[0003] Transformers can be divided into two main categories based on their intended use: power transformers and special transformers. Power transformers convert high-voltage and low-voltage electricity in power systems, minimizing power losses during long-distance transmission. Special transformers, on the other hand, are used in specific industrial and technical applications and include furnace transformers, rectifier transformers, audio transformers, electronic transformers, and high-frequency transformers.

[0004] However, the production process of traditional transformers is relatively complicated and faces obstacles in automated production. First, in order to ensure a safe creepage distance between the primary and secondary windings, insulating tape needs to be affixed to the skeleton, which increases the complexity of production. Secondly, the insulation treatment process of the copper wire winding is cumbersome, and not wrapping it with insulating tape will lead to safety hazards. Finally, the moisture resistance and seismic resistance of traditional transformers are poor, which limits their use in more harsh environments. For example: The high-frequency switching transformer with the Chinese patent authorization announcement number CN202258732U, in the technical solution disclosed in the patent, includes a magnetic core 2, an enameled wire for wrapping around the magnetic core, the outer surface of the enameled wire is wrapped with insulating tape 1, the end of the enameled wire is wrapped with insulating tape 1, and after the enameled wire is wrapped on the magnetic core 2, the outer layer is wrapped with insulating tape 1 to improve its safety insulation performance.

[0005] In view of this, the inventors propose the following technical solutions. Utility model content:

[0006] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a potting transformer with a mounting hole.

[0007] In order to solve the above technical problems, the present invention adopts the following technical solution: a potted transformer with a mounting hole, comprising: a shell, a winding bobbin installed in the shell, a first winding groove and a second winding groove arranged on the winding bobbin and used to wind a first copper wire winding and a second copper wire winding respectively, a stacked silicon steel sheet module installed on the winding bobbin and an epoxy resin insulating glue filled in the shell, wherein a plurality of pins are provided on the winding bobbin extending out of the epoxy resin insulating glue, and a first hanging ear and a second hanging ear for fixing are provided at both ends of the shell.

[0008] Furthermore, in the above technical solution, the winding skeleton is provided with two rows of pins extending out of epoxy resin insulating glue, and each pin is bent in an "L" shape, including a welding portion extending upward from the epoxy resin insulating glue and a wiring portion extending to the side and used to connect the first copper wire winding and the second copper wire winding.

[0009] Furthermore, in the above technical solution, a plurality of pin seats for fixing pins are symmetrically arranged on both sides of the upper end of the winding frame, and guide grooves for positioning the ends of the first copper wire winding and the second copper wire winding are arranged between the pin seats. After the first copper wire winding and the second copper wire winding are completed in winding, they are fixed to the wiring part through the guide grooves.

[0010] Furthermore, in the above technical solution, further, in the above technical solution, the end of the guide groove is in a "V" shape to facilitate the end of the first copper wire winding and the second copper wire winding to pass through.

[0011] Furthermore, in the above technical solution, a positioning guide groove is provided at the bottom of the pin seat for positioning the wiring part, and a cantilever rib is provided on the side wall of the winding frame for supporting the bottom of the pin seat, and the cantilever rib is located at the bottom of the guide groove.

[0012] Furthermore, in the above technical solution, a hollow hole is provided in the middle of the winding skeleton, and a boss extending to both sides for positioning the silicon steel sheet module is formed at the lower end of the hollow hole.

[0013] Furthermore, in the above technical solution, a partition plate for separating the first winding groove and the second winding groove is provided in the middle of the winding skeleton.

[0014] Compared with the prior art, the utility model has the advantages that: in the utility model, the epoxy resin insulation glue is used to fill the shell, the epoxy resin insulation glue is used to separate the silicon steel sheet module, the winding framework, the first copper wire winding and the second copper wire winding, the epoxy resin insulation glue is used to wrap the first copper wire winding and the second copper wire winding, the insulating paper does not need to be pasted on the bone wall of the winding framework, the safe creepage distance between the first copper wire winding and the second copper wire winding can be met, the step of pasting the insulating paper is saved, the first copper wire winding and the second copper wire winding do not need to be wrapped by the insulating paper, the production process is simplified, the efficiency is improved, and the automatic production is facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is the three-dimensional view of the utility model Figure 1 ;

[0016] Figure 2 is the three-dimensional view of the utility model Figure 2 ;

[0017] Figure 3 is the exploded view of the utility model

[0018] Figure 4 is the sectional view of the utility model Figure 1 ;

[0019] Figure 5 is the sectional view of the utility model Figure 2 . DETAILED DESCRIPTION

[0020] The utility model is further described in combination with specific embodiments and drawings.

[0021] See Figures 1 to 5As shown, a potting transformer with mounting holes includes: a shell 1, a winding bobbin 2 installed in the shell 1, a first winding slot 3 and a second winding slot 4 provided on the winding bobbin 2 and used for winding a first copper wire winding and a second copper wire winding, respectively, a stacked silicon steel sheet module 5 installed on the winding bobbin 2, and an epoxy resin insulating glue 6 filled in the shell 1, wherein a plurality of pins 7 are provided on the winding bobbin 2 and extend out of the epoxy resin insulating glue 6, and a first hanging ear 11 and a second hanging ear 12 for fixing are provided at both ends of the shell 1. By encapsulating the outer shell 1 with epoxy resin insulating glue 6, the silicon steel sheet module 5 is separated from the winding skeleton 2, the first copper wire winding and the second copper wire winding by epoxy resin insulating glue 6. Moreover, because the epoxy resin insulating glue 6 wraps the first copper wire winding and the second copper wire winding, there is no need to stick insulating tape on the bone wall of the winding skeleton 2. The safe creepage distance between the first copper wire winding and the second copper wire winding can also be met, eliminating the step of sticking insulating tape and not needing to wrap the first copper wire winding and the second copper wire winding with insulating tape. This simplifies the production process, improves efficiency, and facilitates automated production. Secondly, because the epoxy resin insulating glue 6 also has a good heat dissipation effect, it can dissipate the heat generated when the transformer is working faster, so that a transformer of the same size can achieve a higher power. In addition, the epoxy resin insulating glue 6 seals the transformer in the outer shell 1, which can also play a good moisture-proof role and has a good effect on anti-vibration, thereby extending the service life of the transformer. A first hanging ear 11 and a second hanging ear 12 with mounting holes are respectively provided at both ends of the housing 1 to facilitate mounting the transformer on the bracket.

[0022] The winding bobbin 2 is provided with two rows of pins 7 extending out of the epoxy resin insulating glue 6, and each pin 7 is bent in an "L" shape, including a welding portion 71 extending upward from the epoxy resin insulating glue 6 and a connection portion 72 extending to the side and used to connect the first copper wire winding and the second copper wire winding. A plurality of pin seats 21 for fixing the pins 7 are symmetrically provided on both sides of the upper end of the winding bobbin 2, and a guide groove 22 for positioning the ends of the first copper wire winding and the second copper wire winding is provided between the pin seats 21. After the first copper wire winding and the second copper wire winding are wound, they are passed through the guide groove 22 and fixed to the connection portion 72. The end of the guide groove 22 is "V"-shaped to facilitate the passage of the ends of the first copper wire winding and the second copper wire winding. The bottom of the pin seat 21 is provided with a positioning guide groove 23 for positioning the wiring portion 72, and the side wall of the winding skeleton 2 is provided with a cantilever rib 24 for supporting the bottom of the pin seat 21. The cantilever rib 24 is located at the bottom of the guide groove 22.

[0023] The winding frame 2 is provided with a hollow hole 25 in the middle, and a boss 26 is formed at the lower end of the hollow hole 25 to extend to both sides for positioning the silicon steel sheet module 5. A middle partition 27 is provided in the middle of the winding frame 2 for separating the first winding groove 3 and the second winding groove 4.

[0024] To sum up, when assembling the present invention, the first copper wire winding and the second copper wire winding are first wound on the winding bobbin 2, and then the silicon steel sheet module 5 is installed on the winding bobbin 2, and then the winding bobbin 2 is placed in the shell 1, and finally the epoxy resin insulating glue 6 is injected into the shell 1 until the silicon steel sheet module 5, the winding bobbin 2, the first copper wire winding and the second copper wire winding are completely enclosed in the shell 1. At this time, the epoxy resin insulating glue 6 will penetrate and fill the gaps in each component in the shell 1, and only the pins 7 on the winding bobbin 2 are exposed outside the epoxy resin insulating glue 6, so that the shell 1, the winding bobbin 2, the first copper wire winding, the second copper wire winding, the silicon steel sheet module 5 and the pins 7 are bonded into a whole by the epoxy resin insulating glue 6. By utilizing the insulating properties of the epoxy resin insulating glue 6, the insulation between the components can be guaranteed, the safe creepage distance between the first copper wire winding and the second copper wire winding can be met, and the step of sticking insulating tape is eliminated, which can improve production efficiency. In addition, the epoxy resin insulating glue 6 has a good heat dissipation effect, which can dissipate the heat generated by the transformer when it is working more quickly, avoiding high-temperature damage to the transformer. The epoxy resin insulating glue 6 also has outstanding sealing and elasticity, which can play a good moisture-proof and shock-absorbing effect, further improving the service life of the transformer.

[0025] Of course, the above description is only a specific embodiment of the present invention and is not intended to limit the scope of implementation of the present invention. Any equivalent changes or modifications made based on the structure, features and principles described in the scope of the patent application of the present invention should be included in the scope of the patent application of the present invention.

Claims

1. A potting transformer with mounting holes, characterized in that: include: A housing (1), a winding frame (2) installed in the housing (1), a first winding groove (3) and a second winding groove (4) arranged on the winding frame (2) and used for winding a first copper wire winding and a second copper wire winding respectively, a stacked silicon steel sheet module (5) installed on the winding frame (2), and epoxy resin insulating glue (6) filled in the housing (1), wherein a plurality of pins (7) are provided on the winding frame (2) and extend out of the epoxy resin insulating glue (6), and a first hanging ear (11) and a second hanging ear (12) for fixing are provided at both ends of the housing (1).

2. The potting transformer with mounting holes according to claim 1, characterized in that: The winding frame (2) is provided with two rows of pins (7) extending out of the epoxy resin insulating glue (6), and each pin (7) is bent in an "L" shape, including a welding portion (71) extending upward from the epoxy resin insulating glue (6) and a connection portion (72) extending to the side and used to connect the first copper wire winding and the second copper wire winding.

3. The potting transformer with mounting holes according to claim 2, characterized in that: A plurality of pin seats (21) for fixing pins (7) are symmetrically arranged on both sides of the upper end of the winding frame (2), and guide grooves (22) for positioning the ends of the first copper wire winding and the second copper wire winding are arranged between the pin seats (21). After the first copper wire winding and the second copper wire winding are wound, they pass through the guide grooves (22) and are fixed to the wiring portion (72).

4. The potting transformer with mounting holes according to claim 3, characterized in that: The end of the guide groove (22) is in a "V" shape, so that the ends of the first copper wire winding and the second copper wire winding can pass through.

5. The potting transformer with mounting holes according to claim 3, characterized in that: The bottom of the pin seat (21) is provided with a positioning guide groove (23) for positioning the wiring portion (72), and the side wall of the winding skeleton (2) is provided with a cantilever rib (24) for supporting the bottom of the pin seat (21), and the cantilever rib (24) is located at the bottom of the guide groove (22).

6. The potting transformer with mounting holes according to claim 1, characterized in that: A hollow hole (25) is provided in the middle of the winding frame (2), and a boss (26) is formed at the lower end of the hollow hole (25) and extends to both sides for positioning the silicon steel sheet module (5).

7. A potted transformer with mounting holes according to any one of claims 1 to 6, characterized in that: A middle partition (27) for separating the first winding groove (3) and the second winding groove (4) is provided in the middle of the winding skeleton (2).

Images