CN219393111U - SMD paster transformer - Google Patents

Abstract

The utility model discloses a winding frame which comprises a winding frame plate, an insulating mechanism and a supporting mechanism; a reel plate: the upper end and the lower end of the outer side face of the coil frame are respectively provided with a side plate, the rear ends of the two side plates are respectively provided with a patch pin, a primary coil is wound in the middle of the outer side face of the coil frame, the input end of the primary coil is electrically connected with the output end of the patch pin on the upper side, the outer side face of the primary coil is wound with a secondary coil, the output end of the secondary coil is electrically connected with the input end of the patch pin on the lower side, the outer side face of the whole body formed by the coil frame and the side plates is provided with a shell, an iron core is arranged in the shell, the SMD patch transformer is used for increasing the friction force when the patch transformer is attached to a circuit board, avoiding the position movement of the patch transformer in the process of transferring to the next process, ensuring the welding quality of the transformer, reducing the rework rate when the patch transformer is welded, and improving the installation efficiency of the patch transformer.

Description

SMD paster transformer

Technical Field

The utility model relates to the technical field of transformers, in particular to an SMD patch transformer.

Background

The transformer is a device for changing alternating voltage by utilizing the principle of electromagnetic induction, the main components are a primary coil, a secondary coil and an iron core, which are common components in the internal circuit board of most electronic products, the assembly of the through holes of the transformer is completely completed manually in the primary stage of the production of the electronic circuit board, the working efficiency is low, but along with the improvement of the automation technology, a plurality of transformers are designed by adopting SMD patch type, and the transformers can be automatically welded on the circuit board; in the prior art, the chip type transformer is installed and enabled, only the chip type transformer is required to be placed at the welding machine position of the circuit board, the chip type transformer can be welded in a wave soldering mode and a reflow soldering mode, manual participation is reduced, production efficiency is improved, but sometimes the chip type transformer is placed on the surface of the circuit board and conveyed to the next working procedure, because of the influence of external vibration and other factors, the chip type transformer is easy to shift, deviation occurs in the welding position, the welding quality of the chip type transformer is influenced, and therefore, the SMD chip type transformer is provided.

Disclosure of Invention

The utility model aims to overcome the existing defects, provide the SMD patch transformer, increase the friction force when the patch transformer is attached to a circuit board, avoid the position movement of the patch transformer in the process of transferring to the next process, ensure the welding quality of the transformer and effectively solve the problems in the background art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: an SMD patch transformer comprises a reel plate, an insulation mechanism and a supporting mechanism;

a reel plate: the upper end and the lower end of the outer side face of the coil frame are respectively provided with a patch pin, the middle parts of the outer side faces of the two side plates are respectively provided with a primary coil, the input ends of the primary coils are electrically connected with the output ends of the patch pins at the upper side, the outer side faces of the primary coils are respectively provided with a secondary coil, the output ends of the secondary coils are electrically connected with the input ends of the patch pins at the lower side, the outer side face of the whole body formed by the coil frame and the side plates is provided with a shell, an iron core is arranged in the shell, and a vertical plate at the middle part of the iron core penetrates through the interior of the coil frame;

an insulation mechanism: the primary coil and the secondary coil are positioned in the insulating mechanism;

the supporting mechanism comprises: the welding device is arranged on the rear side face of the shell, increases friction force when the patch transformer is attached to the circuit board, avoids position movement of the patch transformer in the process of transferring to the next procedure, ensures welding quality of the transformer, reduces rework rate of the patch transformer during welding, and improves installation efficiency of the patch transformer.

Further, the insulating mechanism comprises an inner insulating layer, the inner insulating layer comprises a first insulating pad and a heat insulating pad, the first insulating pad is arranged on the outer side face of the winding frame plate, the heat insulating pad is arranged on the outer side face of the first insulating pad, the outer side face of the heat insulating pad is attached to the inner side of the primary coil, and insulation is provided between the primary coil and the winding frame plate.

Further, the insulating mechanism further comprises a middle insulating layer, the middle insulating layer comprises a second insulating pad, an electrostatic shielding layer and a third insulating pad, the second insulating pad is wrapped on the outer side of the primary coil, the electrostatic shielding layer is arranged on the outer side face of the second insulating pad, the third insulating pad is arranged on the outer side face of the electrostatic shielding layer, the third insulating pad is attached to the inner side of the secondary coil, and insulation is provided between the primary coil and the secondary coil.

Further, the insulation mechanism further comprises an outer insulation layer, the outer insulation layer comprises a fourth insulation pad and a corrosion-resistant pad, the fourth insulation pad is wrapped on the outer side of the secondary coil, the corrosion-resistant pad is arranged on the outer side face of the fourth insulation pad, and insulation is provided between the secondary coil and external air.

Further, the supporting mechanism comprises a supporting plate, the supporting plates are respectively arranged at the upper end and the lower end of the rear side face of the shell, the patch pins respectively penetrate through the abdication holes in the middle of the supporting plate, so that a gap exists between the shell and the circuit board, and heat dissipation is facilitated.

Further, supporting mechanism still includes support column and rubber dish, the support column sets up in the trailing flank four corners of shell respectively, and the rear end of support column all is equipped with the rubber dish, increases the frictional force when paster transformer and circuit board subsides.

Further, an anti-skid sleeve is arranged on the outer side face of the shell, so that friction force between the shell and an external pick-up tool is increased.

Compared with the prior art, the utility model has the beneficial effects that: the SMD patch transformer has the following advantages:

when the device is installed, the whole device is placed at the appointed position of the circuit board through the external pick-and-place tool, after the placement is finished, the bonding position of the patch pins and the surface of the circuit board is attached, the supporting plate and the rubber disc are in contact with the surface of the circuit board, the friction force between the whole device and the circuit board is increased through the rubber disc, in the use process, external high-voltage current enters the primary coil through the patch pins at the upper side, the current with smaller voltage is generated in the secondary coil through the electromagnetic induction principle, the current is conveyed to the outside through the patch pins at the lower side, the voltage of the current is changed, the friction force when the patch transformer is attached to the circuit board is increased, the position movement of the patch transformer in the process of transferring to the next process is avoided, the welding quality of the transformer is ensured, the rework rate when the patch transformer is welded is reduced, and the installation efficiency of the patch transformer is improved.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic diagram of the explosive structure of the whole device of the present utility model;

FIG. 3 is a schematic top view of the overall device of the present utility model;

fig. 4 is an enlarged schematic view of the structure of the present utility model at a.

In the figure: a 1-reel plate, a 2-side plate, a 3-patch pin, a 4-primary coil, a 5-secondary coil, a 6-insulation mechanism, a 61-inner insulation layer, a 611-first insulation pad, a 612-insulation pad, a 62-middle insulation layer, a 621-second insulation pad, a 622-electrostatic shielding layer, a 623-third insulation pad, a 63-outer insulation layer, a 631-fourth insulation pad, a 632-corrosion-resistant pad, a 7-iron core, an 8-shell, a 9-support mechanism, a 91-support plate, a 92-support column, a 93-rubber disc, and a 10-anti-skid sleeve.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, the present embodiment provides a technical solution: an SMD patch transformer comprises a reel plate 1, an insulating mechanism 6 and a supporting mechanism 9;

reel plate 1: the upper end and the lower end of the outer side face of the transformer are respectively provided with a side plate 2 for limiting the positions of coils, the rear ends of the two side plates 2 are respectively provided with a patch pin 3, so that the transformer is conveniently installed on a circuit board, the installation speed is increased, the middle part of the outer side face of a winding frame plate 1 is wound with a primary coil 4, the input end of the primary coil 4 is electrically connected with the output end of the upper patch pin 3, the outer side face of the primary coil 4 is wound with a secondary coil 5, the output end of the secondary coil 5 is electrically connected with the input end of the lower patch pin 3, external high-voltage current enters the primary coil 4 through the upper patch pin 3, the secondary coil 5 generates smaller voltage current through an electromagnetic induction principle, the current is transmitted to the outside through the lower patch pin 3, the voltage of the current is changed, the winding frame plate 1 and the outer side face of the whole body formed by the side plates 2 is provided with a shell 8 for shielding the induction magnetic field of the transformer, the interference to other circuits is avoided, the inside of the shell 8 is provided with an iron core 7, the vertical plate in the middle part of the iron core 7 penetrates through the inside of the winding frame plate 1, the working of the transformer is provided with a magnetic circuit 8, the outer side face of the shell 8 is provided with an anti-falling friction sleeve 10, and the external anti-falling tool is prevented from moving between the shell and the shell 8 when the patch is used for preventing the transformer from falling;

insulation mechanism 6: the primary coil 4 and the secondary coil 5 are arranged on the outer side surface of the bobbin 1, the primary coil 4 and the secondary coil 5 are both positioned in the insulating mechanism 6, the insulating mechanism 6 comprises an inner insulating layer 61, the inner insulating layer 61 comprises a first insulating pad 611 and a heat insulating pad 612, the first insulating pad 611 is arranged on the outer side surface of the bobbin 1, the heat insulating pad 612 is arranged on the outer side surface of the first insulating pad 611, the outer side surface of the heat insulating pad 612 is attached to the inner side of the primary coil 4, the insulating mechanism 6 also comprises a middle insulating layer 62, the middle insulating layer 62 comprises a second insulating pad 621, an electrostatic shielding layer 622 and a third insulating pad 623, the second insulating pad 621 is wrapped on the outer side of the primary coil 4, the electrostatic shielding layer 622 is arranged on the outer side surface of the second insulating pad 621, the third insulating pad 623 is attached to the inner side of the secondary coil 5, the insulating mechanism 6 also comprises an outer insulating layer 63, the outer insulating layer 63 includes a fourth insulating pad 631 and an anti-corrosion pad 632, the anti-corrosion pad 632 is an anti-corrosion rubber pad, the fourth insulating pad 631 wraps the outer side of the secondary coil 5, the anti-corrosion pad 632 is disposed on the outer side surface of the fourth insulating pad 631, corrosion of the external environment to the fourth insulating pad 631 is reduced, the first insulating pad 611, the second insulating pad 621, the third insulating pad 623 and the fourth insulating pad 631 are all insulating rubber pads, the primary coil 4 and the coil frame plate 1 are insulated by the first insulating pad 611, the primary coil 4 and the secondary coil 5 are insulated by the second insulating pad 621 and the third insulating pad 623, the secondary coil 5 and the external air are insulated by the fourth insulating pad 631, the insulating pad 612 is an aerogel felt insulating pad, heat generated in the transformation process is blocked by the insulating pad 612 to concentrate toward the direction of the coil frame plate 1, the electrostatic shielding layer 622 is a metal foil, providing electrostatic shielding between the primary coil 4 and the secondary coil 5 by the electrostatic shielding layer 622;

support mechanism 9: set up in the trailing flank of shell 8, supporting mechanism 9 includes backup pad 91, backup pad 91 sets up respectively in the trailing flank upper and lower both ends of shell 8, paster pin 3 passes the hole of stepping down at backup pad 91 middle part respectively, make there is the gap between shell 8 and the circuit board, make things convenient for the circulation of air, improve the radiating effect, supporting mechanism 9 still includes support column 92 and rubber dish 93, support column 92 sets up respectively in the trailing flank four corners of shell 8, the rear end of support column 92 all is equipped with rubber dish 93, increase the frictional force between whole device and the circuit board through rubber dish 93, avoid whole device to take place the position to move at the in-process that shifts to next process, guarantee the welding effect.

The utility model provides an SMD patch transformer, which has the following working principle: during installation, the whole device is placed at a designated position of a circuit board through an external pick-and-place tool, after placement, the patch pins 3 are attached to the welding position on the surface of the circuit board, the supporting plate 91 and the rubber disc 93 are in contact with the surface of the circuit board, friction force between the whole device and the circuit board is increased through the rubber disc 93, the whole device is prevented from moving in the process of being transferred to the next process, welding effect is guaranteed, in the use process, external high-voltage current enters the primary coil 4 through the patch pins 3 on the upper side, current with smaller voltage is generated in the secondary coil 5 through an electromagnetic induction principle, the current is conveyed to the outside through the patch pins 3 on the lower side, the voltage of the current is changed, in the transformation process, insulation is carried out between the primary coil 4 and the winding frame plate 1 through the first insulation pad 611, insulation is carried out between the primary coil 4 and the secondary coil 5 through the second insulation pad 621 and the third insulation pad 623, insulation is carried out between the secondary coil 5 and external air, heat generated in the transformation process is blocked through the insulation pad 631, and the primary coil is concentrated in the direction of the shielding frame plate 1 through the shielding frame plate 622, and the electrostatic shielding layer 4 is provided between the electrostatic shielding layer 4 and the secondary winding layer 5.

The foregoing is only illustrative of the present utility model and is not to be construed as limiting the scope of the utility model, and all equivalent structures or equivalent flow modifications which may be made by the teachings of the present utility model and the accompanying drawings or which may be directly or indirectly employed in other related art are within the scope of the utility model.

Claims (7)

1. An SMD patch transformer, characterized in that: comprises a reel plate (1), an insulating mechanism (6) and a supporting mechanism (9);

reel plate (1): the upper end and the lower end of the outer side face of the coil winding frame are respectively provided with a side plate (2), the rear ends of the two side plates (2) are respectively provided with a patch pin (3), the middle part of the outer side face of the coil winding frame (1) is wound with a primary coil (4), the input end of the primary coil (4) is electrically connected with the output end of the patch pin (3) at the upper side, the outer side face of the primary coil (4) is wound with a secondary coil (5), the output end of the secondary coil (5) is electrically connected with the input end of the patch pin (3) at the lower side, the outer side face of the whole body formed by the coil winding frame (1) and the side plates (2) is provided with a shell (8), an iron core (7) is arranged in the shell (8), and a vertical plate in the middle of the iron core (7) penetrates through the interior of the coil winding frame (1);

insulating mechanism (6): the primary coil (4) and the secondary coil (5) are arranged on the outer side surface of the reel plate (1) and are positioned in the insulating mechanism (6);

support mechanism (9): is arranged on the back side surface of the shell (8).

2. The SMD patch transformer of claim 1, wherein: the insulation mechanism (6) comprises an inner insulation layer (61), the inner insulation layer (61) comprises a first insulation pad (611) and a heat insulation pad (612), the first insulation pad (611) is arranged on the outer side face of the winding frame plate (1), the heat insulation pad (612) is arranged on the outer side face of the first insulation pad (611), and the outer side face of the heat insulation pad (612) is attached to the inner side of the primary coil (4).

3. The SMD patch transformer of claim 1, wherein: the insulation mechanism (6) further comprises a middle insulation layer (62), the middle insulation layer (62) comprises a second insulation pad (621), an electrostatic shielding layer (622) and a third insulation pad (623), the second insulation pad (621) is wrapped on the outer side of the primary coil (4), the electrostatic shielding layer (622) is arranged on the outer side of the second insulation pad (621), the third insulation pad (623) is arranged on the outer side of the electrostatic shielding layer (622), and the third insulation pad (623) is attached to the inner side of the secondary coil (5).

4. The SMD patch transformer of claim 1, wherein: the insulation mechanism (6) further comprises an outer insulation layer (63), the outer insulation layer (63) comprises a fourth insulation pad (631) and a corrosion-resistant pad (632), the fourth insulation pad (631) is wrapped on the outer side of the secondary coil (5), and the corrosion-resistant pad (632) is arranged on the outer side face of the fourth insulation pad (631).

5. The SMD patch transformer of claim 1, wherein: the supporting mechanism (9) comprises a supporting plate (91), the supporting plate (91) is respectively arranged at the upper end and the lower end of the rear side face of the shell (8), and the patch pins (3) respectively penetrate through the abdicating holes in the middle of the supporting plate (91).

6. The SMD patch transformer of claim 1, wherein: the supporting mechanism (9) further comprises supporting columns (92) and rubber discs (93), the supporting columns (92) are respectively arranged at four corners of the rear side face of the shell (8), and the rubber discs (93) are respectively arranged at the rear ends of the supporting columns (92).

7. The SMD patch transformer of claim 1, wherein: an anti-skid sleeve (10) is arranged on the outer side surface of the shell (8).