Novel transformer

Abstract

The utility model relates to the technical field of transformers, and discloses a novel transformer which comprises a square shell, a coil, a core, a symmetrical base, a PIN pin and insulation filler, the coil is wound on the core, the core is installed on the symmetrical base and arranged in an inner cavity of the square shell, the PIN pin is arranged in the inner cavity of the square shell, and the PIN pin is arranged in the inner cavity of the square shell. The coil is arranged on the symmetrical base, the core is arranged on the symmetrical base, the PIN is arranged on the symmetrical base, penetrates through the base and is electrically connected with the coil, the square shell is sleeved on the symmetrical base, the insulating filler is filled in a hole in the square shell, and the coil, the core, the symmetrical base and the square shell form a unified whole of the transformer. Through reasonable design of the transformer, the square shell, the coil, the core, the symmetrical bases, the PINs and the insulating filler are adopted, the voltage drop phenomenon of the transformer can be avoided, the sealing effect is improved, the shell is more stable, and a circuit board can be easily connected.

Description

Technical Field

[0001] The utility model relates to the technical field of transformers, in particular to a new type of transformer. Background Art

[0002] With the widespread popularity of electronic products, the functions of electronic chips have changed a lot, so different voltage power supplies need to be provided to power electronic products or components. For different voltage power supplies, since the input power is constant, the output power needs to change, and transformers are often used to change the voltage. However, there are some defects in the transformers on the market. When they are interfered by external signals during operation, there will be a serious voltage drop, resulting in insufficient power supply voltage for electronic products or components, affecting the normal operation of electronic circuits, etc.; electromagnetic signals are also generated inside the transformer and transmitted outward through the transformer housing, which will interfere with the operation of nearby electronic components, etc.; in addition, the sealing effect of the transformers on the market is not good, and the stability of the transformer housing is not good, which is not easy to connect to the circuit board, etc.

[0003] Therefore, in view of the above problems, the existing transformer needs to be further improved. Utility Model Content

[0004] The purpose of the utility model is to overcome the existing transformer voltage drop phenomenon, poor sealing effect, unstable shell, difficult to connect circuit boards, etc. Through the rational design of the transformer, the transformer voltage drop phenomenon can be avoided, the sealing effect can be increased, the shell can be more stable, and the circuit boards can be easily connected.

[0005] The technical solution of the utility model is as follows:

[0006] A new type of transformer, comprising: a square shell, a coil, a core, a symmetrical base, a PIN pin and an insulating filler, wherein the coil is wound on the core, the core is mounted on the symmetrical base, the core is arranged in the inner cavity of the square shell, the PIN pin is mounted on the symmetrical base and penetrates the base and is electrically connected to the coil, the square shell is sleeved on the symmetrical base, the insulating filler is filled in the pores in the square shell, and the coil, the core and the symmetrical base are formed into a unified transformer with the square shell.

[0007] Furthermore, the square shell includes a shell side wall and a top shell, one end of the shell side wall is smoothly connected to the top shell, and the other end of the shell side wall is sleeved on the symmetrical base.

[0008] Furthermore, the top shell of the square shell protrudes from the side wall of the square shell.

[0009] Furthermore, the side walls of the square shell surround the four sides of the square shell, and the size of the top shell is smaller than the opening size of the side walls.

[0010] Furthermore, the arc of the smooth transition is selected to be 30° to 60°.

[0011] Furthermore, the square shell includes a metal layer, an anti-rust layer, an adhesion layer and a shielding layer, the adhesion layer is provided on the inner side of the metal layer, the shielding layer is provided on the outer side of the metal layer, and the anti-rust layer is provided on the outer side of the shielding layer.

[0012] Furthermore, the metal layer is selected from metal iron or metal aluminum or iron-nickel alloy layer.

[0013] Furthermore, the symmetrical base is a square symmetrical base.

[0014] Furthermore, the shell wall thickness of the square shell is selected to be 0.5 mm to 1 mm.

[0015] Furthermore, the PIN pin is a textured PIN pin.

[0016] Furthermore, the PIN pin is made of metal copper, tin-plated copper or stainless steel.

[0017] Furthermore, the core comprises a core plate and a central core column, the central core column is mounted on the core plate, the core plate is mounted on the base, and the coil is wound around the central core column.

[0018] Furthermore, the core plate comprises at least three core plates, and the coil is wound on a central core column between the core plates.

[0019] Furthermore, a core cavity is provided on the central axis of the central core column.

[0020] Furthermore, the central core column is a square central core column, and the core cavity is a square core cavity.

[0021] Furthermore, a magnetic core is installed in the square core cavity.

[0022] Furthermore, the insulating filler is made of epoxy resin, acrylate, silicone or polyurethane.

[0023] Furthermore, the shielding layer is made of BaTiO3-PVA material.

[0024] Furthermore, the BaTiO3-PVA material is a uniform mixed liquid material containing 3% to 4% BaTiO3 nanoparticles and 96% to 97% PVA aqueous solution, which is calculated by weight.

[0025] Beneficial Effects

[0026] The utility model adopts a square shell, coil, core, symmetrical base, PIN pin and insulating filler through a rational design of the transformer, which can avoid the voltage drop phenomenon of the transformer, increase the sealing effect, make the shell more stable and easy to connect to the circuit board, etc. By adopting a combination of the side wall, top plate and smooth transition on the metal shell, it can be convenient to install the transformer on the circuit board, and by giving way to the core with coil inside the top plate, the space utilization rate of the transformer can be improved, and the distance between the core and the metal shell can be more balanced, etc.; the symmetrical base, the core and the metal shell can be used to stabilize the connection between the shell and the core with coil and the connection of the pins, which is convenient for the subsequent installation of the transformer on the circuit board, etc.; the symmetrically arranged core plate and the hollow core column can be used to balance the transformer's transformation function, etc.; the transformer is tested for work, and when the shielding transformer is interfered with by the signal, it can be found that the signal interference phenomenon can be shielded, especially when the thickness of the metal shell is 0.8mm, the voltage of the shielding transformer is stable and will not drop, meeting the market demand. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 The utility model is a schematic diagram of a new type of transformer structure.

[0028] Figure 2 The utility model is a schematic diagram of a core structure of a new type of transformer.

[0029] Figure 3 The utility model is a schematic diagram of a square shell structure of a new type of transformer.

[0030] Figure 4 The utility model is a schematic diagram of the structure of a new type of transformer after the insulating filler is cured.

[0031] Figure 5 The utility model is a schematic diagram of the shell layer structure of a new type of transformer.

[0032] Figure numbers: 01, shell side wall; 02, symmetrical base; 03, PIN pin; 04, insulating filler; 05, top shell; 06, core; 07, coil; 11, anti-rust layer; 12, shielding layer; 13, metal layer; 14, adhesion layer. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] See also Figure 1-Figure 5 As shown, the utility model provides a new type of transformer, which includes: a square shell, a coil 07, a core 06, a symmetrical base 02, a PIN pin 03 and an insulating filler 04, wherein the symmetrical base 02 is a rectangular symmetrical base; the shell wall thickness of the square shell is 0.8 mm; the PIN pin 03 is a bite-pattern PIN pin; the PIN pin 03 is made of metal copper, tinned copper or stainless steel; the core 06 includes a core plate and a central core column;

[0035] The coil 07 is wound on the core 06, which is mounted on the symmetrical base 02, and the core 06 is arranged in the inner cavity of the square shell. The PIN pin 03 is mounted on the symmetrical base 02 and penetrates the base and is electrically connected to the coil 07. The square shell is sleeved on the symmetrical base 02, and the insulating filler 04 is filled in the pores in the square shell. The coil 07, the core 06, the symmetrical base 02 and the square shell form a unified transformer.

[0036] The square shell includes a shell side wall 01 and a top shell 05. One end of the shell side wall 01 is smoothly connected to the top shell 05. The arc of the smooth transition is selected to be 30° to 60°. The other end of the shell side wall 01 is sleeved on the symmetrical base 02. The top shell 05 of the square shell is protruding from the side wall of the square shell. The side wall of the square shell surrounds the four sides of the square shell. The size of the top shell 05 is smaller than the opening size of the side wall.

[0037] The square shell includes a metal layer 13, an anti-rust layer 11, an adhesive layer 14 and a shielding layer 12. The inner side of the metal layer 13 is provided with an adhesive layer 14, the outer side of the metal layer 13 is provided with a shielding layer 12, and the outer side of the shielding layer 12 is provided with an anti-rust layer 11. The metal layer 13 is selected from a metal iron or metal aluminum or iron-nickel alloy layer;

[0038] The central core column on the core 06 is installed on the core plate, the core plate is installed on the base, and the coil 07 is wound on the central core column; the core plate selects three core plates, and the coil 07 is wound on the central core column between the core plates to form the primary coil and the secondary coil of the transformer; a core cavity is provided on the central axis of the central core column, the central core column selects a square central core column, the core cavity selects a square core cavity, and a magnetic core is installed in the square core cavity;

[0039] Among them, the insulating filler 04 is made of epoxy resin, acrylate, silicone or polyurethane;

[0040] The shielding layer is made of BaTiO3-PVA material; the BaTiO3-PVA material is a uniform mixed liquid material containing 3% to 4% BaTiO3 nanoparticles and 96% to 97% PVA aqueous solution, which is calculated by weight.

[0041] Specific implementation methods of the utility model: for assembling the transformer, three core plates are selected, and the core plates are evenly connected to the central core column, the primary coil and the secondary coil are respectively wound on the central core column between adjacent core plates, the terminals of the coils are respectively electrically connected to the PIN pins, the core plates, the central core column and the symmetrical base are integrally injection molded, and the magnetic core is placed in the core cavity of the core, a metal shell is selected and an adhesive layer (3M adhesive) is brushed on one side of the shell, and then the core with the coil is placed in the metal shell, and the insulating filler is poured, and then the insulating filler is blown with a hot air blower to remove bubbles, a shielding layer of BaTiO3-PVA material is sprayed on the outside of the metal shell, and an anti-rust layer is brushed on the shielding layer; the transformer is tested for working, and when the transformer is interfered with by a signal, it can be found that the signal interference phenomenon can be shielded, especially when the thickness of the metal shell is 0.8mm, the voltage of the transformer is stable and there is no drop phenomenon. For example, the traditional method is to use a plastic shell. It is found that due to interference from the external environment, the voltage drops greatly during the load process. The normal working voltage is 9V, but after interference, it will drop to 5V~6V, so the back-end circuit cannot work because the voltage is too low; when a metal cover with a thickness of 0.8mm is used, the effect is greatly improved, and the voltage drops to about 8.3V after interference; when a shielding layer is sprayed on the outside of the 0.8mm metal shell or the thickness of the metal shell is increased to 1mm, this interference phenomenon can be completely shielded, and the voltage is stable without dropping.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A new type of transformer, characterized in that: The transformer comprises: a square shell, a coil, a core, a symmetrical base, a PIN pin and an insulating filler, wherein the coil is wound on the core, the core is mounted on the symmetrical base, the core is arranged in the inner cavity of the square shell, the PIN pin is mounted on the symmetrical base and penetrates the base and is electrically connected to the coil, the square shell is sleeved on the symmetrical base, the insulating filler is filled in the pores in the square shell, and the coil, the core and the symmetrical base are formed into a unified transformer with the square shell.

2. A new type of transformer according to claim 1, characterized in that: The square shell comprises a shell side wall and a top shell, one end of the shell side wall is smoothly connected to the top shell, and the other end of the shell side wall is sleeved on the symmetrical base.

3. A new type of transformer according to claim 1, characterized in that: The square shell comprises a metal layer, an anti-rust layer, an adhesion layer and a shielding layer. The adhesion layer is arranged on the inner side of the metal layer, the shielding layer is arranged on the outer side of the metal layer, and the anti-rust layer is arranged on the outer side of the shielding layer.

4. A new type of transformer according to claim 1, characterized in that: The symmetrical base is a square symmetrical base.

5. A novel transformer according to claim 1, characterized in that: The shell wall thickness of the square shell is selected to be 0.5mm to 1mm.

6. A novel transformer according to claim 1, characterized in that: The PIN pin is a textured PIN pin.

7. A novel transformer according to claim 1, characterized in that: The core comprises a core plate and a central core column, wherein the central core column is mounted on the core plate, the core plate is mounted on the base, and the coil is wound around the central core column.

8. A new type of transformer according to claim 7, characterized in that: The core plates are selected from at least three core plates, and the coil is wound on the central core column between the core plates.

9. A new type of transformer according to claim 7, characterized in that: A core cavity is arranged on the central axis of the central core column.

10. A new type of transformer according to claim 1, characterized in that: The insulating filler is made of epoxy resin, acrylate, silicone or polyurethane.

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