CN216250341U

CN216250341U - Transformer device

Info

Publication number: CN216250341U
Application number: CN202122497939.1U
Authority: CN
Inventors: 曾贺伟; 袁永华
Original assignee: Sunshine Electronics Co ltd
Current assignee: Sunshine Electronics Co ltd
Priority date: 2021-10-15
Filing date: 2021-10-15
Publication date: 2022-04-08
Anticipated expiration: 2031-10-15

Abstract

The utility model relates to the field of transformers and discloses a transformer which comprises a framework, a magnetic core and at least one short circuit stitch, wherein the magnetic core is sleeved on the framework, each short circuit stitch comprises a bent part and at least one stitch part, the bent part is accommodated at the upper end of the framework, the upper end of the bent part is connected with the magnetic core, each stitch part extends to one side of the lower end of the bent part, and each stitch part penetrates through the lower end of the framework. The transformer does not need a grounding lead, so that the operation difficulty can be reduced, and the production efficiency can be improved; the contact area of the stitch and the magnetic core can be increased, and the connection stability of the stitch and the magnetic core is improved.

Description

Transformer device

Technical Field

The utility model relates to the field of transformers, in particular to a transformer.

Background

The transformer is a device for changing alternating voltage by utilizing the principle of electromagnetic induction, and consists of a magnetic core, a primary winding, a secondary winding, a framework and pins. At present, in the transformer, the magnetic core passes through ground lead with the stitch and is connected, and ground lead uses reserve line point conducting resin, and stitch soldering tin is even tin easily, and need correct the lead wire before the soldering tin, and the soldering tin process is complicated relatively to make production efficiency lower. Moreover, the lead is arranged outside the framework, and the suspension is easy to cause the size to exceed and break, so that the stability of the transformer is poor, and the service life is short.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects in the prior art, and provides the transformer without a grounding lead, which can reduce the operation difficulty and improve the production efficiency; the contact area of the stitch and the magnetic core can be increased, and the connection stability of the stitch and the magnetic core is improved.

The connection part of the magnetic core and the pins can be protected, and the stability of the transformer is improved.

The purpose of the utility model is realized by the following technical scheme:

the utility model provides a transformer, includes skeleton, magnetic core and at least one short circuit stitch, the magnetic core cup joints the skeleton, each short circuit stitch all includes kink and at least one stitch portion, the kink holding in the upper end of skeleton, just the upper end of kink with the magnetic core is connected, each stitch portion extends respectively and forms in the lower extreme one side of kink, and each stitch portion wears to locate respectively the lower extreme of skeleton.

In one embodiment, the short circuit pin is L-shaped, the number of the pin portions is one, the pin portion extends to be formed on one side of the lower end of the bending portion, and the pin portion penetrates through the lower end of the framework.

In one embodiment, the short circuit stitch is U-shaped, the number of the stitch portions is two, the two stitch portions extend to form on two sides of the lower end of the bending portion respectively, and the two stitch portions penetrate through the lower end of the framework respectively.

In one embodiment, the upper end of the frame is provided with a holding groove, the bottom wall of the holding groove is provided with at least one through hole, the bending part is held in the holding groove, and the pin parts are respectively arranged at the lower ends of the through holes in a penetrating manner.

In one embodiment, the transformer further includes a conductive adhesive layer adhered between the bending portion and the magnetic core.

In one embodiment, the bobbin includes a bobbin main body, a first winding seat and a second winding seat, the first winding seat and the second winding seat extend to be formed on two sides of the lower end of the bobbin, and the lower end of the first winding seat is provided with at least one short-circuit pin.

In one embodiment, the first winding seat is provided with an annular rib at the periphery of the stitch part.

In one embodiment, the lower end of the first winding seat extends at intervals to form a plurality of first limiting tables, and a first wire groove is formed between every two adjacent first limiting tables; the lower end of the second winding seat extends at intervals to form a plurality of second limiting tables, and a second wire groove is formed between every two adjacent second limiting tables.

In one embodiment, the bobbin body includes a bobbin, a first baffle plate and a second baffle plate, the first baffle plate and the second baffle plate extend to be formed on two sides of the bobbin body, the first bobbin seat extends to be formed at a lower end of the first baffle plate, and the second bobbin seat extends to be formed at a lower end of the second baffle plate.

In one embodiment, a first wiring groove is formed in the upper end of the first baffle, and a second wiring groove is formed in the upper end of the second baffle.

Compared with the prior art, the utility model has at least the following advantages:

the magnetic core short circuit device is simpler in structure and smaller in size, common cylindrical pins are replaced by the U-shaped pins or the L-shaped pins, grounding leads are not needed, short circuit is provided for the contact part of the bent part and the magnetic core, operation difficulty can be reduced, and production efficiency is improved; still through the area of contact of kink increase and magnetic core, can improve the connection steadiness of the two. Moreover, the U-shaped pins are embedded into the framework, so that the connection positions of the magnetic cores and the pins can be protected, and the problems that the pins are arranged outside the framework and are suspended easily to cause size exceeding and breakage are solved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a combination diagram of a transformer of embodiment 1.

Fig. 2 is an exploded view of the transformer of embodiment 1.

Fig. 3 is an exploded view of the transformer of embodiment 2.

Detailed Description

To facilitate an understanding of the utility model, the utility model will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

In embodiment 1, referring to fig. 1 and 2, a transformer 10 includes a bobbin 110, a core 120, and a plurality of pins. The magnetic core 120 is sleeved on the framework 110, and a plurality of pins include at least one shorting pin 130, and the rest may be common cylindrical pins 140. Each short circuit pin 130 is U-shaped, and includes a bending portion 131 and two pin portions 132, the bending portion 131 is accommodated in the upper end of the frame 110, the upper end of the bending portion 131 is connected to the magnetic core 120, the two pin portions 132 respectively extend to two sides of the lower end of the bending portion 131, and the two pin portions 132 respectively penetrate through the lower end of the frame 110. One of the pin parts 132 is used for supplying a plug board, and the other pin part 132 is used for winding and arranging wires, so that the practicability of the transformer 10 is improved.

Therefore, the U-shaped pin replaces the common cylindrical pin, a grounding lead is not needed, and the contact part of the bent part 131 and the magnetic core 120 is used for providing short circuit, so that the operation difficulty can be reduced, and the production efficiency can be improved; the contact area with the magnetic core 120 is also increased by the bent portion 131, so that the connection stability between the two parts can be improved. Moreover, the U-shaped pins are embedded in the framework 110, so that the connection positions of the magnetic cores 120 and the pins can be protected, and the problems that the pins are arranged outside the framework 110 and are easily suspended to cause size exceeding and breakage are solved.

For example, the lengths of the two pin portions 132 are the same. For example, the lengths of the two pin portions 132 are different. For example, one of the stitch portions 132 is a long stitch portion, and the other stitch portion 132 is a short stitch portion.

Further, the transformer 10 further includes a conductive adhesive layer 133, the conductive adhesive layer 133 is adhered between the bending portion 131 and the magnetic core 120, and the conductive adhesive layer 133 can improve the connection stability between the U-shaped pin 130 and the magnetic core 120.

Further, an accommodating groove 1124 is formed at the upper end of the frame 110, two through holes 1125 are formed at the bottom wall of the accommodating groove 1124, the bending portion 131 is accommodated in the accommodating groove 1124, and the two pin portions 132 respectively penetrate through the lower ends of the two through holes 1125. Therefore, the U-shaped pins are embedded into the framework 110, the connection positions of the magnetic cores 120 and the pins can be protected, and the problems that the pins are arranged outside the framework 110 and are easily suspended to cause size exceeding and breakage are solved.

Further, the bobbin 110 includes a bobbin main body 111, a first bobbin base 112 and a second bobbin base 113, the first bobbin base 112 and the second bobbin base 113 extend to both sides of the lower end of the bobbin 110, the lower end of the first bobbin base 112 is provided with a plurality of the cylindrical pins 140 and at least one of the shorting pins 130, and the lower end of the second bobbin base 113 is provided with a plurality of the cylindrical pins 140 (not shown in the drawings). This increases the number of pins.

Further, the first winding seat 112 is provided with two annular ribs 1123 around the two stitch portions 132, respectively. This enhances the stability of the U-shaped stitch on the armature 110 by the annular rib 1123. Of course, the circumference of the cylindrical pin 140 may also be provided with an annular rib 1123.

Further, a plurality of first limiting platforms 1121 are formed by extending the lower end of the first winding seat 112 at intervals, and a first wire groove 1122 is formed between two adjacent first limiting platforms 1121; the lower end of the second bobbin 113 extends at intervals to form a plurality of second limiting platforms 1131, and a second wire groove 1132 is formed between two adjacent second limiting platforms 1131.

Further, the bobbin main body 111 includes a bobbin 1111, a first baffle 1112 and a second baffle 1113, the first baffle 1112 and the second baffle 1113 are respectively formed by extending two sides of the bobbin main body 111, the first bobbin base 112 is formed by extending a lower end of the first baffle 1112, and the second bobbin base 113 is formed by extending a lower end of the second baffle 1113. The first baffle 1112 and the second baffle 1113 are used for limiting the winding wire and preventing the winding bobbin 1111 from running out of the winding wire.

Further, a first wiring groove 1112a is formed in the upper end of the first baffle 1112, and a second wiring groove 1113a is formed in the upper end of the second baffle 1113.

Therefore, the enameled wire of the winding is firstly wound on the U-shaped pin 130 of the first winding seat 112, then passes through the first wire slot 1122 and then is wound on the bobbin 1111, and then passes through the second wire slot 1132 and then is wound on the U-shaped pin 130 of the second winding seat 113.

Example 2, please refer to fig. 3, which is different from example 1 mainly in that: the short circuit pin 130 is L-shaped, the number of the pin portions 132 is one, the pin portions 132 extend to form on one side of the lower end of the bending portion 131, and the pin portions 132 penetrate through the lower end of the frame 110. Correspondingly, the through hole 1125 and the annular rib 1123 are both one. The rest structures are basically the same and are not described in detail.

Therefore, the L-shaped pin replaces the common cylindrical pin, a grounding lead is not needed, and the contact part of the bent part 131 and the magnetic core 120 is used for providing short circuit, so that the operation difficulty can be reduced, and the production efficiency can be improved; the contact area with the magnetic core 120 is also increased by the bent portion 131, so that the connection stability between the two parts can be improved. Moreover, the L-shaped pins are embedded in the framework 110, so that the connection positions of the magnetic core 120 and the pins can be protected, and the problems that the pins are arranged outside the framework 110 and are easily suspended to cause size exceeding and breakage are solved.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The transformer is characterized by comprising a framework, a magnetic core and at least one short-circuit stitch, wherein the magnetic core is sleeved on the framework, each short-circuit stitch comprises a bending part and at least one stitch part, the bending part is accommodated at the upper end of the framework, the upper end of the bending part is connected with the magnetic core, each stitch part extends to be formed on one side of the lower end of the bending part, and each stitch part penetrates through the lower end of the framework.

2. The transformer of claim 1, wherein the shorting pin is L-shaped, the number of the pin portions is one, the pin portion extends to be formed on one side of the lower end of the bent portion, and the pin portion penetrates through the lower end of the bobbin.

3. The transformer of claim 1, wherein the shorting pin is U-shaped, the number of the pin portions is two, two of the pin portions extend to form on two sides of the lower end of the bent portion, and two of the pin portions penetrate through the lower end of the bobbin.

4. The transformer according to claim 2 or 3, wherein a receiving groove is formed at an upper end of the bobbin, at least one through hole is formed at a bottom wall of the receiving groove, the bent portion is received in the receiving groove, and each of the pin portions is respectively inserted into a lower end of each of the through holes.

5. The transformer of claim 1, further comprising a conductive adhesive layer adhered between the bent portion and the magnetic core.

6. The transformer of claim 1, wherein the bobbin comprises a bobbin body, a first winding seat and a second winding seat, the first winding seat and the second winding seat extend to be formed on two sides of a lower end of the bobbin, and at least one shorting pin is disposed at the lower end of the first winding seat.

7. The transformer of claim 6, wherein the first winding seat is provided with an annular rib at a periphery of the stitch portion.

8. The transformer according to claim 6, wherein the lower end of the first winding seat extends at intervals to form a plurality of first limiting platforms, and a first wire groove is formed between every two adjacent first limiting platforms; the lower end of the second winding seat extends at intervals to form a plurality of second limiting tables, and a second wire groove is formed between every two adjacent second limiting tables.

9. The transformer of claim 8, wherein the bobbin body comprises a bobbin, a first baffle plate and a second baffle plate, the first baffle plate and the second baffle plate are respectively formed by extending on two sides of the bobbin body, the first bobbin base is formed by extending on a lower end of the first baffle plate, and the second bobbin base is formed by extending on a lower end of the second baffle plate.

10. The transformer of claim 9, wherein the first baffle plate has a first wiring slot formed at an upper end thereof, and the second baffle plate has a second wiring slot formed at an upper end thereof.