CN219892021U

CN219892021U - Power transformer with high-low voltage isolation function of input end

Info

Publication number: CN219892021U
Application number: CN202321075473.9U
Authority: CN
Inventors: 徐国华
Original assignee: Deqing Ding Xing Electronics Co ltd
Current assignee: Deqing Ding Xing Electronics Co ltd
Priority date: 2023-05-08
Filing date: 2023-05-08
Publication date: 2023-10-24
Anticipated expiration: 2033-05-08

Abstract

The utility model discloses a power transformer with an input end high-low voltage isolation function, which relates to the technical field of power transformers. According to the utility model, the high voltage and the low voltage of the coil at the input end can be isolated through the isolating winding frame arranged on the transformer main body, and the coil can be pressed inside the high-voltage winding groove and the low-voltage winding groove through the pressing plate, so that the coil end is clamped, the fixing is convenient, and the falling off is prevented.

Description

Power transformer with high-low voltage isolation function of input end

Technical Field

The utility model relates to the technical field of power transformers, in particular to a power transformer with an input end high-low voltage isolation function.

Background

The power transformer is a transformer in the device for providing a stable voltage. The transformer generally comprises an iron core, a coil, a binding post and the like, wherein the binding post of an input coil and the binding post of an output coil are arranged on the same side of the transformer, and are welded on a circuit board through soldering tin during installation. However, due to the high temperature and the easy conduction heat during welding the binding post, the joint between the other end of the binding post and the coil end is easy to be unwelded, and poor contact is further caused.

The prior patent (bulletin number: CN 212032849U) proposes a power transformer, which comprises an iron core, a coil and binding posts, wherein the coil is wound in the center of the iron core, and the binding posts are arranged at the bottom of one side of the iron core and are connected with the wire heads of the coil in a one-to-one correspondence manner; the outer part of the iron core is fixedly connected with a plastic side cover, and the middle part of the plastic side cover is provided with a frame opening for exposing the coil; fixing blocks are arranged at intervals at the bottoms of the plastic side covers, and vertical internal threaded holes are formed in the centers of the fixing blocks; the top end of the binding post is provided with external threads and is in threaded connection with the fixing block; the threading hole is formed in the bottom end of the external thread of the binding post, the thread end penetrates through the threading hole and winds outside the binding post, and the thread end and the binding post are welded in the threading hole through soldering tin

The power transformer has the following disadvantages when in use: the coil of the power transformer is mostly wound outside the iron core, and then the power transformer is fixed by using the adhesive tape according to the use requirement, but the adhesive tape is loose to fix, easy to fall off and inconvenient to fix the coil, therefore, the power transformer with the input end high-low voltage isolation function is provided to solve the problems.

Disclosure of Invention

The utility model provides a power transformer with an input end high-low voltage isolation function, which solves the technical problems that most of power wires of the power transformer are wound outside an iron core and then fixed by using rubberized fabric according to the use requirement, but the rubberized fabric is loose to fix and easy to fall off, and the wires are inconvenient to fix.

In order to solve the technical problems, the power transformer with the high-low voltage isolation function of the input end comprises a transformer main body, wherein an isolation winding frame is arranged at the lower part of the front side of the transformer main body, a high-voltage winding groove is formed in the left side of the isolation winding frame, a low-voltage winding groove is formed in the right side of the isolation winding frame, a wiring groove is arranged between the high-voltage winding groove and the low-voltage winding groove, pins are connected to the bottom of the transformer main body, and a pressing plate is detachably arranged at the bottom of the isolation winding frame.

Preferably, the left side and the right side of the pressing plate are both in threaded connection with locking bolts, and a threaded blind hole for screwing in the locking bolts is formed in the isolation winding frame.

Preferably, an insulating pad is arranged on one side of the pressing plate, which is close to the isolation winding frame, and the insulating pad is fixed with the pressing plate through bonding.

Preferably, the side wall of the transformer main body is provided with a mounting frame, and mounting holes are formed in the mounting frame.

Preferably, the high-voltage wire winding groove and the low-voltage wire winding groove have the same structure, and the high-voltage wire winding groove and the low-voltage wire winding groove are communicated with the wire winding groove.

Preferably, the pins are made of copper, and the number of the pins is four.

Preferably, the insulating pad is made of rubber, and the thickness of the insulating pad is 1cm.

Preferably, the material of mounting bracket is PVC, the quantity of mounting bracket is four.

Compared with the related art, the power transformer with the input end high-low voltage isolation function has the following beneficial effects:

1. according to the utility model, the high-voltage end of the input end coil passes through the high-voltage winding groove and then is wound with the iron core on the transformer main body, and the low-voltage end of the input end coil passes through the low-voltage winding groove and then is wound with the iron core on the transformer main body, so that the function of isolating the high voltage from the low voltage of the input end coil is realized.

2. According to the utility model, the pressing plate can be arranged on the bottom surface of the isolation winding frame through the matching of the locking bolt and the threaded blind hole, so that the coil is pressed and held in the high-voltage winding groove and the low-voltage winding groove by the pressing plate, the coil end is favorably clamped, the fixation is convenient, and the falling off is prevented.

Drawings

FIG. 1 is a schematic diagram of a power transformer with high and low voltage isolation at the input;

fig. 2 is a schematic diagram of a detachable structure of a voltage board in a power transformer with an input end high-low voltage isolation function;

FIG. 3 is a schematic diagram of a power transformer with high-low voltage isolation function of the input end in front view;

fig. 4 is an enlarged view of the structure at a in fig. 3.

Reference numerals in the drawings: 1. a transformer body; 2. isolating the bobbin; 3. high-voltage winding grooves; 4. a low voltage wire winding slot; 5. wiring grooves; 6. a stitch; 7. a mounting frame; 8. a mounting hole; 9. a pressing plate; 10. an insulating pad; 11. a locking bolt; 12. and (5) a threaded blind hole.

Detailed Description

Embodiments of the present utility model are described in detail below.

An embodiment I is given by fig. 1-4, a power transformer with input high-low voltage isolation function, including transformer main part 1, isolation bobbin 2 is installed to transformer main part 1 front side lower part, isolation bobbin 2 left side has been seted up high-voltage wire winding groove 3, isolation bobbin 2 right side has been seted up low-voltage wire winding groove 4, be provided with wiring groove 5 between high-voltage wire winding groove 3 and the low-voltage wire winding groove 4, the bottom of transformer main part 1 is connected with stitch 6, the bottom demountable installation of isolation bobbin 2 has to press and hold board 9, can press the coil to hold in the inside of high-voltage wire winding groove 3 and low-voltage wire winding groove 4 through pressing and hold board 9, be favorable to holding the coil tip, be convenient for fix, prevent to drop.

In addition, in order to conveniently install and disassemble the pressing plate 9, the left side and the right side of the pressing plate 9 are both in threaded connection with locking bolts 11, and a threaded blind hole 12 into which the locking bolts 11 are screwed is formed in the isolation winding frame 2.

In addition, in order to prevent the coil from conducting to the outside of the transformer body 1, an insulating pad 10 is disposed on one side of the holding plate 9 near the isolation bobbin 2, and the insulating pad 10 is fixed to the holding plate 9 by bonding.

In addition, in order to facilitate the installation of the transformer body 1, the side wall of the transformer body 1 is provided with a mounting frame 7, and mounting holes 8 are formed in the mounting frame 7.

In addition, in order to be convenient for keep apart high low pressure of transformer input, high voltage wire winding groove 3 is the same with the structure of low voltage wire winding groove 4, and high voltage wire winding groove 3 and low voltage wire winding groove 4 all communicate with wiring groove 5.

In addition, in order to ensure that the pins 6 can conduct electricity with the coil, the material of the pins 6 is copper, and the number of the pins 6 is four.

In order to ensure that the insulating pad 10 has insulating performance, the insulating pad 10 is made of rubber, and the thickness of the insulating pad 10 is 1cm.

In addition, in order to improve the insulating effect, the material of mounting bracket 7 is PVC, and the quantity of mounting bracket 7 is four.

Working principle: when the transformer is used, the high-voltage end of the input end coil passes through the high-voltage winding groove 3 and then is wound with the iron core on the transformer main body 1, the low-voltage end of the input end coil passes through the low-voltage winding groove 4 and then is wound with the iron core on the transformer main body 1, the function of high-voltage and low-voltage isolation of the input end coil is realized, and then the pressing plate 9 with the locking bolt 11 is arranged on the bottom surface of the isolation winding frame 2, so that the pressing plate 9 presses the coil inside the high-voltage winding groove 3 and the low-voltage winding groove 4, the coil end is clamped, and the transformer is convenient to fix and prevents falling.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a power transformer with input high-low voltage isolation function, includes transformer main part (1), its characterized in that, isolation bobbin (2) are installed to transformer main part (1) front side lower part, keep apart bobbin (2) left side and seted up high-voltage winding groove (3), keep apart bobbin (2) right side and seted up low-voltage winding groove (4), be provided with wiring groove (5) between high-voltage winding groove (3) and low-voltage winding groove (4), the bottom of transformer main part (1) is connected with stitch (6), keep apart bobbin (2) bottom demountable installation has pressure to hold board (9).

2. The power transformer with the input end high-low voltage isolation function according to claim 1, wherein locking bolts (11) are connected to the left side and the right side of the pressing plate (9) in a threaded mode, and threaded blind holes (12) into which the locking bolts (11) are screwed are formed in the isolation winding frame (2).

3. The power transformer with the input end high-low voltage isolation function according to claim 1, wherein an insulating pad (10) is arranged on one side, close to the isolation winding frame (2), of the pressing plate (9), and the insulating pad (10) is fixed with the pressing plate (9) through bonding.

4. The power transformer with the input end high-low voltage isolation function according to claim 1, wherein a mounting frame (7) is arranged on the side wall of the transformer main body (1), and mounting holes (8) are formed in the mounting frame (7).

5. A power transformer with high-low voltage isolation function of input end according to claim 1, characterized in that the high-voltage winding groove (3) and the low-voltage winding groove (4) have the same structure, and the high-voltage winding groove (3) and the low-voltage winding groove (4) are communicated with the wiring groove (5).

6. The power transformer with the input end high-low voltage isolation function according to claim 1, wherein the pins (6) are made of copper, and the number of the pins (6) is four.

7. A power transformer with high-low voltage isolation function of input end according to claim 3, characterized in that the material of the insulating pad (10) is rubber, and the thickness of the insulating pad (10) is 1cm.

8. The power transformer with the input end high-low voltage isolation function according to claim 4, wherein the mounting frames (7) are made of PVC, and the number of the mounting frames (7) is four.