Separated network transformer and manufacturing method

Abstract

The invention provides a separated network transformer and a manufacturing method. The network transformer is mounted in a matched manner by arranging a base and an upper cover shell; an isolation heat dissipation cavity is formed through an isolation plate arranged on an upper cover shell, so that iron cores wound with coils are isolated from one another, and the situation that instant high voltage generated on a coil group possibly breaks through an insulating layer of an enameled wire and is coupled to another coil group, and consequently network equipment is damaged is prevented; meanwhile, a plurality of heat dissipation holes are formed in the isolation plate and a plurality of heat dissipation holes are formed in the shell of the upper cover for heat dissipation, so that the internal temperature is prevented from being too high; and a gap cutting cavity is formed between the supporting plate and the side edge of the base, so that stable signal transmission of the transformer is ensured, and internal risks of the transformer are prevented.

Description

Technical Field

[0001] The invention relates to the field of network transformers, and in particular to a separate network transformer and a manufacturing method thereof. Background Art

[0002] A network transformer is an electronic device used for network communication. Its working purpose is to transfer telecommunication signals from one circuit to another, that is, from one electrical component to another, while changing the voltage and current of the signal. Network transformers are usually used in computer networks, telephone networks, and radio and television networks. Currently, network transformers are most commonly used in the field of communication. They are usually used to isolate different communication systems. There may be incompatibility issues between the electrical signals of different communication systems. Using a network transformer can isolate different communication systems to avoid signal interference and loss. A network transformer generally consists of an input coil, an output coil, and an iron core. The invention patent with publication number CN101572177A discloses a network transformer, which includes an insulating shell, a metal pin, and a plurality of coil groups electrically connected to the metal pin. It solves the problem that the instantaneous high voltage generated on the coil group may break through the insulation layer of the enameled wire and couple to another coil group, thereby causing damage to the network equipment. An insulating partition is set to isolate the adjacent coil groups, so that the coil groups do not affect each other. The effect of sound; however, this will cause a problem, that is, the inside of a coil group becomes a closed space due to the existence of an insulating partition, and it is impossible to perform good heat dissipation and temperature and current and voltage signal detection; the invention patent with publication number CN115863009A discloses a manufacturing method of a network transformer, a network transformer and a circuit board; in order to achieve better heat dissipation inside the network transformer, the coil of the transformer inserts multiple enameled wires of the coil into multiple vias of the shell, wherein the enameled wires and the vias correspond to each other; then, the thermal conductive glue is covered on the coil and the thermal conductive glue is spread all over the accommodating cavity; finally, the enameled wire in each via is stripped and tinned so that the enameled wire can be electrically connected and a finished transformer is obtained; this manufacturing method actually integrates the coil with the cavity and the hole of the shell, which enhances the stability and heat dissipation of the entire network transformer, but it also brings problems, that is, the network transformer will be damaged internally when the input or output current or voltage is too large or the temperature is too high. If the coil and the shell hole are integrated and then wrapped around the external PIN pin, it is difficult to quickly disconnect the coil from the outside when the above situation occurs. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides a separate network transformer and a manufacturing method thereof.

[0004] A separate network transformer and a manufacturing method thereof, comprising a base and an upper cover shell connected to the base, wherein the interior of the base is a cavity, and N iron cores are installed in the cavity; the N iron cores are arranged in the cavity of the base along the side direction of the base, and the base and the upper cover shell can be connected by matching, and after the base and the upper cover shell are connected, an isolated heat dissipation cavity and a gap cutting cavity can be formed.

[0005] Furthermore, the outside of the base is provided with a plurality of PIN pins connected to the outside along the side direction of the base, and the PIN pins include a horizontal plate and a vertical plate, the horizontal plate is fixedly connected to the outside of the side of the base, one end of the vertical plate is connected to the horizontal plate, and the other end of the vertical plate is vertically downward connected to the outside.

[0006] Furthermore, through holes are provided between adjacent PIN pins on the outer side of the base. The through holes penetrate the side of the base toward the inner cavity of the base. There is a certain distance between the through holes and the PIN pins on both sides.

[0007] Furthermore, a plurality of blocks are arranged on the upper end surfaces of both sides of the base along the side direction, and n turns of coils are wound on the N iron cores inside the base cavity. After the coils are wound on the iron cores n turns, the free ends extend out of the base through the isolation heat dissipation cavity and the gap cutting cavity and are wound on the PIN pins on the outside of the base.

[0008] Furthermore, a temperature detection device, an input current detection device, an input voltage detection device, an output current detection device, and an output voltage detection device are provided inside the base.

[0009] Furthermore, the number of isolated heat dissipation cavities is the same as the number of iron cores, each iron core transmits independent current and voltage signals and dissipates heat in the isolated heat dissipation cavity, and the gap cutting cavity accommodates the free ends of N coils extending from the N iron cores, and dissipates heat again in the gap cutting cavity.

[0010] Furthermore, the upper cover shell includes a top cover, and a plurality of ventilation and heat dissipation holes I are opened on the top cover. The lower end of the top cover is fixedly connected with a support plate I and a support plate II along the side direction of the top cover. The width of the top cover is equal to the width of the base. A plurality of card slots are arranged on both sides of the bottom end of the top cover. The plurality of card slots correspond to a plurality of card blocks on the upper end surfaces of the two sides of the base one by one. The distance between the support plate I and one side of the top cover is L1, and the distance between the support plate II and the other side of the top cover is L 2， L1=L2.

[0011] Furthermore, N+1 isolation plates are fixedly connected between support plate I and support plate II, one end of the isolation plate is fixedly connected to support plate I, and the other end of the isolation plate is fixedly connected to support plate II, and N cavities are formed in the middle of the N+1 isolation plates.

[0012] Furthermore, the length of the isolation plate is the same as the depth of the inner cavity of the base.

[0013] Furthermore, a heat dissipation and ventilation strip penetrating the isolation plate is arranged at the upper end of each isolation plate, and a plurality of ventilation and heat dissipation holes II are arranged penetrating each isolation plate at the lower end of the heat dissipation and ventilation strip.

[0014] Furthermore, when the upper cover shell is connected to the base, N isolated heat dissipation cavities are formed between the N+1 isolation plates in the cavity inside the base.

[0015] Furthermore, corresponding N penetration cutting holes are arranged on the support plate I and the support plate II of the upper cover shell at positions corresponding to the N isolated heat dissipation cavities.

[0016] Furthermore, the penetration cutting hole is divided into an upper hole and a lower hole, the upper hole and the lower hole are separated by a partition plate, a recess is provided on the side of the penetration partition hole, the recess penetrates into the interior of the support plate I and the support plate II, a cylinder is provided inside the support plate I and the support plate II, the cylinder is connected to the partition plate through a telescopic rod, the partition plate reciprocates inside the recess and the penetration dividing hole, thereby closing or opening the penetration cutting hole divided into the upper hole and the lower hole.

[0017] Furthermore, a coil cutting device is provided in the lower hole.

[0018] Furthermore, a control device for controlling the extension and retraction of the cylinder is also arranged on the upper cover shell.

[0019] Furthermore, when the upper cover shell is connected to the base, a gap cutting cavity is formed between the support plate I and the support plate II and the two side edges of the base.

[0020] Furthermore, a plurality of ventilation and heat dissipation holes III are provided on the support plate I and the support plate II.

[0021] A method for manufacturing a separate network transformer includes the following steps: Step 1: initially separating a base and an upper cover shell, fixing N iron cores in a cavity of the base, and setting the distances between the N iron cores to be equal during installation.

[0022] Step 2: After installing N iron cores, wind the coil on the iron cores for n turns, and then pull out the free end of the coil.

[0023] Step 3: After the coil is wound, lower the upper cover shell to match it with the base, and the support plate I and support plate II at the lower end of the upper cover shell enter the cavity. Before the card slot of the upper cover shell and the card block of the base match, extend the free ends of the coils on the N iron cores out of the upper hole of the cutting hole and pass through the gap cutting cavity formed by the support plate and the side of the base, then pass through the pass-through hole on the side of the base, pass through the outside of the base and wrap around the PIN pin.

[0024] Step 4: After the coil is wound around the PIN pin, continue to lower the upper cover shell so that the card slot on the upper cover shell and the card block on the base match each other, and N isolated heat dissipation cavities are formed between the N+1 isolation plates in the cavity inside the base. Each iron core wrapped with the coil is set in the isolated heat dissipation cavity to transmit current and voltage signals and dissipate heat.

[0025] Step 5: After the upper cover shell and the base are installed, cover the coil in the isolated heat dissipation cavity with thermal conductive glue so that the coil is firmly connected to the iron core and the isolated heat dissipation cavity.

[0026] Step 6: Continue to use the normal winding connection method for the coils in the gap cutting cavity and outside the base.

[0027] Step 7: During the signal transmission process, the temperature, input current and voltage, and output current and voltage inside the transformer are detected; if the above values ​​are detected to be greater than the standard values ​​and a risk occurs, the control device controls the partition plate to retract so that the upper hole and the lower hole are opened, and the coil falls into the lower hole that passes through the cutting hole and is cut off.

[0028] The present invention cooperates and installs the network transformer by setting a base and an upper cover shell; an isolation heat dissipation cavity is formed by an isolation plate set on the upper cover shell so that the iron cores wound with the coils are isolated from each other, preventing the instantaneous high voltage generated on the coil group from breaking through the insulation layer of the enameled wire and coupling to another coil group, thereby causing damage to the network equipment; at the same time, a plurality of heat dissipation holes are set on the isolation plate and a plurality of heat dissipation holes are set on the upper cover shell for heat dissipation to prevent the internal temperature from being too high; a gap cutting cavity is formed by setting a support plate and a side edge of the base, and a through-cutting hole is set on the support plate and a through-cutting hole is matched with the through-cutting hole on the base so that the coil passes through the two holes and extends out of the base at the same time, and the control device and the detection device are connected so that when an internal risk of the transformer occurs, the upper and lower holes of the through-cutting hole can be controlled to be opened so that the coil enters the lower hole and is cut off, and the coil inside the isolation heat dissipation cavity is connected to the iron core and the cavity by a thermally conductive adhesive, and the connection is firm, and the coil in the gap cutting cavity can be cut and disconnected according to the internal situation of the transformer, which not only ensures the stable signal transmission of the transformer but also prevents the internal risk of the transformer. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Attached Figure 1 A schematic diagram of the base.

[0030] Attached Figure 2 Schematic diagram of the upper cover shell.

[0031] Attached Figure 3 This is a schematic diagram of a network transformer.

[0032] Attached Figure 4 Schematic diagram of cutting holes.

[0033] Attached Figure 5 Schematic diagram of the gap cutting cavity.

[0034] Attached Figure 6 Schematic diagram of the closed and open states of the punching cutting hole.

[0035] 1-base, 2-card block, 3-PIN foot, 4-iron core, 5-coil, 6-through hole, 7-upper cover shell, 8-card slot, 9-support plate I, 10-support plate II, 11-ventilation and heat dissipation hole III, 12-through cutting hole, 13-isolation plate, 14-ventilation and heat dissipation hole II, 15-isolation and heat dissipation cavity, 16-partition plate, 17-notch, 18-gap cutting cavity. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] A separate network transformer includes a base 1 and an upper cover shell 7 connected to the base 1. The base 1 is internally hollow and N iron cores 4 are installed in the cavity. The N iron cores 4 are arranged in the base cavity along the side direction of the base 1. The base 1 and the upper cover shell 7 can be connected by matching. After the base 1 and the upper cover shell 7 are connected, an isolated heat dissipation cavity 15 and a gap cutting cavity 18 can be formed. The outside of the base 1 is provided with a plurality of PIN pins 3 connected to the outside along the side direction of the base. The PIN pins 3 include a horizontal plate and a vertical plate. The horizontal plate is fixedly connected to the outside of the side of the base, one end of the vertical plate is connected to the horizontal plate, and the other end of the vertical plate is vertically downward and connected to the outside. A through hole 6 is opened between adjacent PIN pins 3 on the side of the outside of the base 1. The through hole 6 passes through the side of the base toward the internal cavity of the base. There is a certain distance between the through hole 6 and the PIN pins 3 on both sides. A plurality of card blocks 2 are arranged on the upper end surfaces of the sides of the base 1 along the side direction. N coils 5 are wound around the N iron cores 4 inside the cavity of the base. The coils 5 are wound around the iron cores n times. The rear free end extends out of the outside of the base through the isolated heat dissipation cavity and the gap cutting cavity and is wrapped around the PIN pin 3 on the outside of the base. The interior of the base 1 is provided with a temperature detection device, an input current detection device, an input voltage detection device, an output current detection device, and an output voltage detection device. The number of isolated heat dissipation cavities 15 is the same as the number of iron cores. Each iron core 4 performs independent current and voltage signal transmission and heat dissipation in the isolated heat dissipation cavity. The gap cutting cavity accommodates the free ends of N coils 5 extending from N iron cores 4, and performs heat dissipation again in the gap cutting cavity. The upper cover shell 7 includes a top cover, and a plurality of air-permeable heat dissipation holes Ⅰ are opened on the top cover. The lower end of the top cover is fixedly connected with a support plate Ⅰ9 and a support plate Ⅱ10 along the side direction of the top cover. The width of the top cover is equal to the width of the base 1. A plurality of card slots 8 are provided on both sides of the bottom end of the top cover. The plurality of card slots 8 correspond one-to-one to the plurality of card blocks 2 on the upper end surfaces of the two sides of the base. The distance between the support plate Ⅰ9 and one side of the top cover is L1, and the distance between the support plate Ⅱ10 and the other side of the top cover is L 2，L1=L2, N+1 isolation plates 13 are fixedly connected between support plate Ⅰ9 and support plate Ⅱ10, one end of the isolation plate 13 is fixedly connected to support plate Ⅰ9, and the other end of the isolation plate 13 is fixedly connected to support plate Ⅱ10, N cavities are formed in the middle of the N+1 isolation plates, the length of the isolation plate 13 is the same as the depth of the cavity inside the base, and a heat dissipation and ventilation strip penetrating the isolation plate is provided at the upper end of each isolation plate 13, and a plurality of ventilation and heat dissipation holes Ⅱ14 are penetrated on each isolation plate at the lower end of the heat dissipation and ventilation strip, and when the upper cover shell is connected to the base, N isolation and heat dissipation cavities 15 are formed between the N+1 isolation plates in the cavity inside the base, and corresponding N through-cut holes are provided at the positions of the support plates Ⅰ9 and Ⅱ10 of the upper cover shell corresponding to the N isolation and heat dissipation cavities 15. 12. The through-cutting hole 12 is divided into an upper hole and a lower hole, which are separated by a partition plate 16. A recess 17 is provided on the side of the through-cutting hole, and the recess 17 penetrates into the interior of the support plate I and the support plate II 10. The recess 17 is provided with a cylinder inside the support plate I and the support plate II. The cylinder is connected to the partition plate through a telescopic rod. The partition plate reciprocates inside the recess 17 and the through-cutting hole, thereby closing or opening the through-cutting hole divided into an upper hole and a lower hole. A coil cutting device is provided in the lower hole, and a control device for controlling the extension and retraction of the cylinder is also provided on the upper cover shell. When the upper cover shell is connected to the base, a gap cutting cavity 18 is formed between the support plate I9 and the support plate II 10 and the two side edges of the base. A plurality of air-permeable and heat-dissipating holes III 11 are provided on the support plate I9 and the support plate II 10.

[0038] A method for manufacturing a separate network transformer includes the following steps: Step 1: initially separating a base and an upper cover shell, fixing N iron cores in a cavity of the base, and setting the distances between the N iron cores to be equal during installation.

[0039] Step 2: After installing N iron cores, wind the coil on the iron cores for n turns, and then pull out the free end of the coil.

[0040] Step 3: After the coil is wound, lower the upper cover shell to match it with the base, and the support plate I and support plate II at the lower end of the upper cover shell enter the cavity. Before the card slot of the upper cover shell and the card block of the base match, extend the free ends of the coils on the N iron cores out of the upper hole of the cutting hole and pass through the gap cutting cavity formed by the support plate and the side of the base, then pass through the pass-through hole on the side of the base, pass through the outside of the base and wrap around the PIN pin.

[0041] Step 4: After the coil is wound around the PIN pin, continue to lower the upper cover shell so that the card slot on the upper cover shell and the card block on the base match each other, and N isolated heat dissipation cavities are formed between the N+1 isolation plates in the cavity inside the base. Each iron core wrapped with the coil is set in the isolated heat dissipation cavity to transmit current and voltage signals and dissipate heat.

[0042] Step 5: After the upper cover shell and the base are installed, cover the coil in the isolated heat dissipation cavity with thermal conductive glue so that the coil is firmly connected to the iron core and the isolated heat dissipation cavity.

[0043] Step 6: Continue to use the normal winding connection method for the coils in the gap cutting cavity and outside the base.

[0044] Step 7: During the signal transmission process, the temperature, input current and voltage, and output current and voltage inside the transformer are detected; if the above values ​​are detected to be greater than the standard values ​​and a risk occurs, the control device controls the partition plate to retract so that the upper hole and the lower hole are opened, and the coil falls into the lower hole that passes through the cutting hole and is cut off.

Claims

1. A separate network transformer, comprising a base and an upper cover shell connected to the base, the interior of the base is a cavity, and N iron cores are installed in the cavity; the N iron cores are arranged in the base cavity along the side direction of the base, the base and the upper cover shell can be connected by matching, and the base and the upper cover shell can form an isolated heat dissipation cavity and a gap cutting cavity after being connected, and the outside of the base is provided with a plurality of PIN pins connected to the outside along the side direction of the base, the PIN pins include a horizontal plate and a vertical plate, the horizontal plate is fixedly connected to the outside of the side of the base, one end of the vertical plate is connected to the horizontal plate, and the other end of the vertical plate is vertically downwardly connected to the outside, and a through hole is opened between adjacent PIN pins on the side of the outside of the base, the through hole passes through the side of the base toward the internal cavity of the base, and there is a certain distance between the through hole and the PIN pins on both sides.

2. The separate network transformer according to claim 1, characterized in that: A plurality of blocks are arranged on the upper end surfaces of both sides of the base along the side direction, and n turns of coils are wound on the N iron cores inside the base cavity. After the coils are wound on the iron cores n turns, the free ends extend out of the base through the isolation heat dissipation cavity and the gap cutting cavity and are wound on the PIN pins on the outside of the base.

3. The separate network transformer according to claim 2, characterized in that: A temperature detection device, an input current detection device, an input voltage detection device, an output current detection device, and an output voltage detection device are arranged inside the base.

4. The separate network transformer according to claim 3, characterized in that: The number of isolated heat dissipation cavities is the same as the number of iron cores. Each iron core transmits independent current and voltage signals and dissipates heat in the isolated heat dissipation cavity. The gap cutting cavity accommodates the free ends of N coils extending from the N iron cores and dissipates heat again in the gap cutting cavity.

5. The separate network transformer according to claim 4, characterized in that: The upper cover shell includes a top cover, and a plurality of ventilation and heat dissipation holes Ⅰ are opened on the top cover. The lower end of the top cover is fixedly connected with a support plate Ⅰ and a support plate Ⅱ along the side direction of the top cover. The width of the top cover is equal to the width of the base. A plurality of card slots are arranged on both sides of the bottom end of the top cover. The plurality of card slots correspond to a plurality of card blocks on the upper end surfaces of the two sides of the base. The distance between the support plate Ⅰ and one side of the top cover is L1, and the distance between the support plate Ⅱ and the other side of the top cover is L 2， L1=L2.

6. The separate network transformer according to claim 5, characterized in that: N+1 isolation plates are fixedly connected between support plate I and support plate II, one end of the isolation plate is fixedly connected to support plate I, and the other end of the isolation plate is fixedly connected to support plate II, N cavities are formed in the middle of the N+1 isolation plates, the length of the isolation plate is the same as the depth of the cavity inside the base, and a heat dissipation and ventilation strip penetrating the isolation plate is arranged at the upper end of each isolation plate, and a plurality of ventilation and heat dissipation holes II are arranged penetrating on each isolation plate at the lower end of the heat dissipation and ventilation strip. When the upper cover shell is connected to the base, N isolation and heat dissipation cavities are formed between the N+1 isolation plates in the cavity inside the base, and corresponding N through-cut holes are arranged at the positions of the support plates I and II of the upper cover shell corresponding to the N isolation and heat dissipation cavities.

7. The separate network transformer according to claim 6, characterized in that: The penetration cutting hole is divided into an upper hole and a lower hole, which are separated by a partition plate. A notch is provided on the side of the penetration partition hole, which penetrates into the interior of the support plate I and the support plate II. A cylinder is provided inside the support plate I and the support plate II, and the cylinder is connected to the partition plate through a telescopic rod. The partition plate reciprocates inside the notch and the penetration dividing hole, thereby closing or opening the penetration cutting hole divided into the upper hole and the lower hole.

8. The separate network transformer according to claim 7, characterized in that: A coil cutting device is arranged in the lower hole, and a control device for controlling the extension and retraction of the cylinder is also arranged on the upper cover shell. When the upper cover shell is connected to the base, a gap cutting cavity is formed between the support plate I and the support plate II and the two side edges of the base, and a plurality of air-permeable and heat-dissipating holes III are arranged on the support plate I and the support plate II.

9. A method for manufacturing the separate network transformer according to any one of claims 1 to 8, comprising the following steps: Step 1: Initially, separate the base and the upper cover shell, and fix N iron cores in the cavity of the base, and set the distances between the N iron cores to be equal during installation; Step 2: After installing N iron cores, wind the coil on the iron cores for n turns, and then pull out the free end of the coil; Step 3: After the coil is wound, lower the upper cover shell to match it with the base, and the support plate I and support plate II at the lower end of the upper cover shell enter the cavity. Before the card slot of the upper cover shell and the card block of the base match, extend the free ends of the coils on the N iron cores out of the upper hole of the cutting hole and pass through the gap cutting cavity formed by the support plate and the side of the base, then pass through the pass-through hole on the side of the base, pass through the outside of the base and wrap around the PIN pin.

10. The manufacturing method according to claim 9, characterized in that: Step 4: After the coil is wound around the PIN pin, the upper cover shell is lowered so that the card slot on the upper cover shell and the card block on the base match each other, and N isolated heat dissipation chambers are formed between the N+1 isolation plates in the cavity inside the base. Each iron core wound with the coil is arranged in the isolated heat dissipation chamber to transmit current and voltage signals and dissipate heat; Step 5: After the upper cover shell and the base are installed, cover the coil in the isolated heat dissipation cavity with thermal conductive glue so that the coil is firmly connected to the iron core and the isolated heat dissipation cavity; Step 6: Continue to use the normal winding connection method for the coils in the gap cutting cavity and outside the base; Step 7: During the signal transmission process, the temperature, input current and voltage, and output current and voltage inside the transformer are detected; if the above values ​​are detected to be greater than the standard values ​​and a risk occurs, the control device controls the partition plate to retract so that the upper hole and the lower hole are opened, and the coil falls into the lower hole that passes through the cutting hole and is cut off.

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