CN219393135U - Transformer - Google Patents

Abstract

The application provides a transformer, comprising a base; the guide pins are arranged on the base, and two ends of each guide pin extend out of the base respectively; the magnetic core is vertically arranged on the base; the winding is wound on the magnetic core and is connected with one end of the guide pin; and the shell is arranged on the base and is internally provided with a containing cavity for containing the magnetic core. The guide pin and the magnetic core can be supported through the base; the winding is wound on the magnetic core and connected with the guide pin, so that the electric connection with the guide pin can be realized; the magnetic core can be sealed and protected through the cooperation of the shell and the base; through vertically installing the magnetic core on the base to can reduce the great area that occupies when the magnetic core transversely places, and then can reduce the whole volume of transformer, the electronic product that uses this transformer can realize miniaturization.

Description

Transformer

Technical Field

The application belongs to the technical field of electronic components, and more particularly relates to a transformer.

Background

At present, a plurality of types of transformers are arranged on a circuit board in an electronic product so as to meet different functional requirements of the electronic product during working. With the gradual development of electronic products toward miniaturization, higher requirements are also put forward on the size of the transformer, namely, small-size transformers are favored.

However, the transformer installed on the circuit board at present occupies a larger area, so that the overall volume of the circuit board and the electronic product is increased, which is not beneficial to miniaturization of the electronic product.

Disclosure of Invention

An object of an embodiment of the present application is to provide a transformer to solve the problems existing in the related art: the transformer installed on the circuit board occupies a larger area, which results in the problem of large overall volume of the electronic product.

In order to achieve the above purpose, the technical scheme adopted in the embodiment of the application is as follows:

there is provided a transformer comprising:

a base;

the guide pin is arranged on the base, and two ends of the guide pin extend out of the base respectively;

the magnetic core is vertically arranged on the base;

the winding is wound on the magnetic core and is connected with one end of the guide pin;

the shell is arranged on the base, and a containing cavity for containing the magnetic core is arranged in the shell.

According to the structure, the guide pin and the magnetic core can be supported through the base; the winding is wound on the magnetic core and connected with the guide pin, so that the electric connection with the guide pin can be realized; the magnetic core can be sealed and protected through the cooperation of the shell and the base; through vertically installing the magnetic core on the base to can reduce the great area that occupies when the magnetic core transversely places, and then can reduce the whole volume of transformer, the electronic product that uses this transformer can realize miniaturization.

In one embodiment, a first boss is convexly arranged at the top of the base, and the magnetic core is mounted on the first boss.

According to the structure, the first boss can play a role of vertically fixing the magnetic core, so that the occupied area of the transformer can be reduced, and miniaturization of electronic products is realized.

In one embodiment, the magnetic core is bonded to the first boss.

On one hand, the structure is beneficial to realizing that the magnetic core is vertically arranged on the first boss, so that the area of the transformer occupying the circuit board is reduced; on the other hand, the pre-fixing of the magnetic core is facilitated, wiring operation between winding and the guide pin is facilitated, and the subsequent filling and sealing fixation of the magnetic core is also facilitated.

In one embodiment, a distance between a top surface of the first boss and an inner wall of a top portion of the housing is equal to a diameter of the magnetic core.

This structure, when shell and base are connected, the inner wall of shell can compress tightly the magnetic core on first boss to realize the fixed to the magnetic core, and then improve the installation steadiness of magnetic core.

In one embodiment, the top of the base is convexly provided with a second boss, the first boss is arranged on the second boss, and a limit groove part for the edge of the shell to extend in is formed between the second boss and the top surface of the base.

According to the structure, the shell and the base can be aligned rapidly through the limiting groove part formed by the second boss and the top surface of the base, and the alignment precision and the installation efficiency of the shell and the base are improved.

In one embodiment, the guiding pin comprises a first section and a second section, wherein two ends of the first section extend out of the base respectively, the second section is connected with one end of the first section extending into the accommodating cavity, and the second section is inclined to the first section.

According to the structure, when the winding is wound at the corner position between the first section and the second section, the winding is not easy to separate from the guide pin, and the connection stability of the winding and the guide pin is improved.

In one embodiment, two ends of the bottom of the base are respectively provided with a heightening seat.

According to the structure, the base can be lifted through the two lifting seats, so that the flatness of the bottom surface of the base after molding can be improved.

In one embodiment, a distance between an end of the first section remote from the housing and the bottom surface of the base is greater than a thickness of the raised seat.

The structure is convenient for the connection of the guide pin and the circuit board, and prevents the blocking of the guide pin by the heightening seat.

In one embodiment, the shell is provided with a glue filling hole, and the accommodating cavity is filled with pouring sealant.

In the structure, pouring sealant can be injected into the accommodating cavity through the glue filling hole; the fixing effect on the magnetic core and the connection strength of the shell and the base are improved through the pouring sealant, and the vibration resistance and the shock resistance of the transformer are improved.

In one embodiment, the housing is bonded to the base.

According to the structure, through the adhesion of the shell and the base, the pre-fixing of the shell is facilitated, and pouring of pouring sealant into the accommodating cavity is facilitated; the injected pouring sealant can also strengthen the connection strength between the shell and the base.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings that are required for the description of the embodiments or exemplary techniques will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person of ordinary skill in the art.

Fig. 1 is a schematic structural diagram of a transformer according to an embodiment of the present application;

fig. 2 is a schematic cross-sectional view of a transformer according to an embodiment of the present disclosure;

FIG. 3 is an exploded view of FIG. 1;

fig. 4 is a schematic structural diagram of connection between a base and a lead according to an embodiment of the present application.

Wherein, each reference numeral in the figure mainly marks:

1. a base; 11. a first boss; 12. a second boss; 13. a limit groove part; 14. a heightening seat;

2. a needle; 21. a first section; 22. a second section;

3. a housing; 30. a glue filling hole;

4. a magnetic core; 5. winding; 6. pouring sealant.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved by the present application more clear, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.

It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise. The meaning of "a number" is one or more than one unless specifically defined otherwise.

In the description of the present application, it should be understood that the terms "center," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships that are based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, the appearances of the phrase "in one embodiment" or "in some embodiments" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

Referring to fig. 1 and 2, a transformer provided in an embodiment of the present application will now be described. The transformer comprises a base 1, a guide pin 2, a magnetic core 4, a winding 5 and a shell 3. The lead 2 may be an electrical conductor made of an electrically conductive material, so that electrical connection with an external circuit board is possible. The guide pin 2 is arranged on the base 1, and two ends of the guide pin 2 respectively extend out of the base 1. The number of the pins 2 may be plural, the plural pins 2 may be divided into two groups, and the two groups of pins 2 may be input ends and output ends, respectively. In this embodiment, the number of the pins 2 may be six, the six pins 2 are divided into three groups, two pins 2 are provided in each group, and the three groups of pins 2 are arranged in a row. The guide pin 2 can be integrally formed with the base 1, the length direction of the guide pin 2 is perpendicular to the plane where the base 1 is located, and the guide pins 2 are arranged in parallel at intervals, so that the guide pin 2 is convenient to form and manufacture, and the guide pin 2 is also convenient to connect with an external circuit board. The magnetic core 4 can be in a cylindrical configuration, and the magnetic core 4 is vertically arranged on the base 1; the magnetic core 4 may be a magnetic ring. "vertical" is understood herein to mean: the radial direction of the magnetic core 4 is perpendicular to the plane of the base 1, i.e. the axial direction of the magnetic core 4 is parallel to the plane of the base 1. The core 4 may reduce power of the transformer or transmission loss of signals by increasing permeability.

Referring to fig. 2, a winding wire 5 is wound around the magnetic core 4 and connected to one end of the lead 2. A hole is formed in the middle of the magnetic core 4, and the winding wire 5 passes through the hole and is wound on the magnetic core 4. The wire 5 may be an enameled wire as a carrier for transmitting electrical signals or energy. The windings 5 may be multiple groups, wherein two ends of one group of windings 5 may be connected with two pins 2 at one end, and two ends of the other group of windings 5 may be connected with two pins 2 at the other end, so as to realize output and input of the transformer. The shell 3 is arranged on the base 1, and a containing cavity for containing the magnetic core 4 is arranged in the shell 3. The bottom of shell 3 is the open end, and when base 1 and shell 3 are connected, base 1 can seal this open end to can seal the protection to magnetic core 4. Wherein, the base 1 and the shell 3 can be made of insulating materials, and play roles in protecting and insulating the magnetic core 4.

According to the structure, the base 1 can support the guide pin 2 and the magnetic core 4; by winding the winding wire 5 around the magnetic core 4 and connecting with the lead pin 2, electrical connection with the lead pin 2 can be achieved; the magnetic core 4 can be sealed and protected by the cooperation of the shell 3 and the base 1; through vertically installing magnetic core 4 on base 1 to can reduce the great area that occupies when magnetic core 4 transversely places, and then can reduce the whole volume of transformer, the electronic product that uses this transformer can realize miniaturization.

In an embodiment, referring to fig. 2 and fig. 4, as a specific implementation manner of the transformer provided in the embodiment of the present application, a first boss 11 is protruding from a top of the base 1, and the magnetic core 4 is mounted on the first boss 11. Specifically, the first boss 11 may have a substantially rectangular parallelepiped configuration, and the magnetic core 4 may be mounted on the top surface of the first boss 11. The first boss 11 can be arranged at the middle position of the two groups of the guide pins 2 and is opposite to the group of the guide pins 2 positioned in the middle, one end of the group of the guide pins 2 positioned in the middle extends into the first boss 11, and the first boss 11, the plurality of guide pins 2 and the base 1 are integrally formed, so that the connection strength between each guide pin 2 and the base 1 is improved. According to the structure, the first boss 11 can play a role of vertically fixing the magnetic core 4, so that the occupied area of the transformer can be reduced, and miniaturization of electronic products is realized.

In one embodiment, referring to fig. 2 and 4, each of the pins 2 extends into the accommodating cavity by a length smaller than the thickness of the first boss 11. Here, the "thickness of the first boss 11" may be understood as a distance between the top surface of the first boss 11 and the bottom surface thereof, and may be understood as a vertical direction when the magnetic core 4 is vertically installed. In this structure, the height of the magnetic core 4 is greater than the length of the guide pin 2 extending into the accommodating cavity, that is, the magnetic core 4 is located above the guide pin 2, so that connection between the winding 5 on the magnetic core 4 and the guide pin 2 is facilitated.

In one embodiment, the top surface of the first boss 11 has an arc surface with a radius of curvature identical to that of the magnetic core 4, so that the outer circumferential surface of the magnetic core 4 can be fitted with the arc surface. According to the structure, the middle part of the arc-shaped surface is concave, and the two sides of the arc-shaped surface can effectively limit the magnetic core 4, so that on one hand, the positioning efficiency of the magnetic core 4 on the first boss 11 is improved; on the other hand, the arc-shaped surface can effectively realize the resistance to the magnetic core 4, improves the stability of the magnetic core 4 installed on the first boss 11, and avoids the shaking of the magnetic core 4 caused by the fact that the top surface of the first boss 11 is a plane.

In one embodiment, as a specific implementation of the transformer provided in the embodiment of the present application, the magnetic core 4 is adhered to the first boss 11. Specifically, the top surface of the first boss 11 is coated with viscose liquid, and the outer peripheral surface of the magnetic core 4 is adhered to the first boss 11, so that the magnetic core 4 and the first boss 11 are adhered; alternatively, the outer peripheral surface of the magnetic core 4 is coated with a viscose, and the magnetic core 4 is adhered to the first boss 11 through the viscose; alternatively, the adhesive liquid is coated on the top surface of the first boss 11, and the adhesive liquid is also coated on the outer circumferential surface of the magnetic core 4, so that the magnetic core 4 can be bonded to the first boss 11. The adhesive applied to the first boss 11 and the adhesive applied to the magnetic core 4 may be the same or different, and are not limited only herein. In the structure, the magnetic core 4 is adhered to the first boss 11, so that on one hand, the magnetic core 4 is vertically installed on the first boss 11, and the area of the transformer occupying a circuit board is reduced; on the other hand, the pre-fixing of the magnetic core 4 is facilitated, wiring operation between the winding 5 and the guide pin 2 is facilitated, and the subsequent filling and sealing fixation of the magnetic core 4 is also facilitated.

In one embodiment, the top surface of the first boss 11 may be formed with a plurality of concave portions concaved inward at intervals, and the plurality of concave portions may accommodate the adhesive liquid, thereby preventing overflow of the adhesive liquid. Particularly, for the structure that the top surface of the first boss 11 is an arc surface, the plurality of concave parts can improve the connection strength between the magnetic core 4 and the first boss 11.

In one embodiment, referring to fig. 2 and 4, as a specific implementation of the transformer provided in the embodiment of the present application, a distance between the top surface of the first boss 11 and the inner wall of the top of the housing 3 is equal to the diameter of the magnetic core 4. Here, "diameter of the magnetic core 4" may be understood as an outer diameter of the magnetic core 4. This structure, when shell 3 is connected with base 1, the inner wall of shell 3 can compress tightly magnetic core 4 on first boss 11 to realize the fixed to magnetic core 4, and then improve the installation steadiness of magnetic core 4.

In an embodiment, referring to fig. 2 and fig. 4, as a specific implementation manner of the transformer provided in the embodiment of the present application, a second boss 12 is protruding from a top surface of the base 1, a first boss 11 is disposed on the second boss 12, and a limiting groove portion 13 for extending into an edge of the housing 3 is formed between the second boss 12 and the top surface of the base 1. Specifically, the middle part of the top surface of the base 1 protrudes towards the direction of the accommodating cavity and is provided with a second boss 12, the second boss 12 can be in a cuboid configuration, and the plurality of pins 2 penetrate through the second boss 12. The width of the second boss 12 may be kept the same as the length of the first boss 11 (X-axis direction in fig. 4) so as to be integrally formed. In this structure, the housing 3 and the base 1 can be aligned quickly by the limiting groove 13 formed on the top surface of the base 1 and the second boss 12, so that the alignment accuracy and the mounting efficiency of the housing 3 and the base 1 are improved.

In one embodiment, referring to fig. 4, the thickness of the second boss 12 is smaller than the thickness of the first boss 11. With this structure, the height of the transformer in the vertical direction can be reduced, so that the volume of the transformer can be reduced.

In one embodiment, the distance between the top surface of the second boss 12 and the inner wall of the top of the housing 3 is equal to the sum of the thickness of the first boss 11 and the diameter of the magnetic core 4, or the distance between the open end of the housing 3 and the inner wall of the top of the housing 3 is equal to the sum of the thickness of the second boss 12, the thickness of the first boss 11 and the diameter of the magnetic core 4. Through the connection of the shell 3 and the base 1, the magnetic core 4 can be pressed and fixed, the installation stability of the magnetic core 4 is improved, and the vibration resistance and the impact resistance of the transformer are improved.

In an embodiment, referring to fig. 3 and fig. 4, as a specific implementation manner of the transformer provided in the embodiment of the present application, the lead 2 includes a first section 21 and a second section 22, two ends of the first section 21 respectively extend out of the base 1, the second section 22 is connected to one end of the first section 21 extending into the accommodating cavity, and the second section 22 is disposed obliquely to the first section 21. Specifically, the first section 21 is disposed through the second boss 12 of the base 1. In this structure, the second section 22 and the first section 21 are obliquely arranged, and when the winding 5 is wound at the corner position between the first section 21 and the second section 22, the winding 5 is not easy to separate from the guide pin 2, so that the connection stability of the winding 5 and the guide pin 2 is improved.

In one embodiment, referring to fig. 4, the angle between the second section 22 and the first section 21 is less than or equal to 90 °. In the present embodiment, the second section 22 is perpendicular to the first section 21, i.e. the angle between the second section 22 and the first section 21 is 90 °. In this structure, when the winding 5 is connected to the guide pin 2, the winding 5 can be hooked at the corner between the second section 22 and the first section 21, and the winding 5 is not easy to fall off. The second section 22 and the first section 21 may be formed by bending a conductive rod of a cylinder, so as to facilitate processing and manufacturing and improve conductivity.

In an embodiment, referring to fig. 2 and fig. 4, as a specific implementation manner of the transformer provided in the embodiment of the present application, two ends of the bottom of the base 1 are respectively provided with a raising seat 14. Specifically, two ends of the side surface of the base 1 facing away from the second boss 12 are respectively provided with a raising seat 14, and the guide pin 2 is positioned between the two raising seats 14. In this structure, when the base 1 and the guide pin 2 are integrally formed, the base 1 can be raised by the two raising seats 14, so that the flatness of the bottom surface of the base 1 after forming can be improved.

In one embodiment, referring to fig. 2, two raised seats 14 are symmetrically distributed about the central axis of the base 1. Specifically, the two elevating seats 14, the base 1, the second boss 12 and the first boss 11 may be integrally formed, so as to facilitate processing and manufacturing. By the structure, the base 1 is convenient to process and manufacture by symmetrical arrangement.

In one embodiment, referring to fig. 2 and 4, as a specific implementation of the transformer provided in the embodiment of the present application, a distance between an end of the first section 21 away from the housing 3 and the bottom surface of the base 1 is greater than a thickness of the raised seat 14. Specifically, the length of the pin 2 extending out of the base 1 is greater than the thickness of the elevating seat 14. This structure facilitates connection of the lead 2 with the circuit board, and prevents the blocking of the lead 2 by the raising seat 14.

In an embodiment, referring to fig. 2 and fig. 3, as a specific implementation manner of the transformer provided in the embodiment of the present application, a glue filling hole 30 is formed on the housing 3, and a potting adhesive 6 is filled in the accommodating cavity. Specifically, the pouring sealant 6 can be opened at the top of the housing 3, thereby facilitating the pouring operation. The outer circumferential surface of the housing 3 may be leveled with the outer circumferential surface of the base 1, so that the outer appearance of the transformer may be secured. In this structure, the pouring sealant 6 can be injected into the accommodating cavity through the sealant injecting hole 30; the fixing effect on the magnetic core 4 and the connection strength of the shell 3 and the base 1 are improved through the pouring sealant 6, and the vibration resistance and the shock resistance of the transformer are improved.

In one embodiment, as a specific implementation of the transformer provided in the embodiments of the present application, the housing 3 is adhered to the base 1. Specifically, the bottom surface of the limiting groove part 13 can be coated with adhesive, and the bottom edge of the shell 3 can be adhered and fixed on the limiting groove part 13; alternatively, the bottom of the shell 3 may be coated with adhesive, and the shell 3 and the base 1 may be connected by the adhesive; alternatively, the bottom surface of the limiting groove 13 may be coated with adhesive, and the bottom of the housing 3 may be coated with adhesive, so that the housing 3 and the base 1 may be bonded. The adhesive on the limiting groove 13 may be the same as or different from the adhesive on the housing 3, and is not limited only herein. According to the structure, through the adhesion of the shell 3 and the base 1, the pre-fixing of the shell 3 is facilitated, and the pouring sealant 6 is conveniently poured into the accommodating cavity in the follow-up process; the injected pouring sealant 6 can also strengthen the connection strength between the housing 3 and the base 1.

In one embodiment, the bottom surface of the limiting groove 13 is recessed inwards to form a groove, and the groove can accommodate adhesive, so that the phenomenon of glue overflow caused by the fact that the bottom surface of the limiting groove 13 is a plane can be avoided, and the connection strength between the shell 3 and the base 1 can be improved. Furthermore, the potting adhesive 6 may be injected into the groove portion to reinforce the connection between the housing 3 and the base 1. In another embodiment, a groove is formed at the bottom of the housing 3, and when the housing 3 is adhered to the base 1, the pouring sealant 6 can extend into the groove to strengthen the connection strength between the housing 3 and the base 1. In yet another embodiment, the bottom surface of the limiting groove 13 and the bottom of the housing 3 are both provided with grooves, and the grooves on the limiting groove 13 and the grooves on the housing 3 may be aligned or offset. Pouring sealant 6 can be respectively injected into different groove parts, and not only can fixation be realized through adhesive between the shell 3 and the base 1, but also the fixation can be enhanced through the pouring sealant 6, thereby being beneficial to improving the connection strength of the shell 3 and the base 1 and further improving the vibration resistance and the shock resistance of the transformer.

The embodiment of the application also provides a preparation method of the transformer, which is used for preparing the transformer provided by any embodiment, and the preparation method can comprise the following steps:

1. the winding wire 5 is wound around the core 4. Specifically, the number of turns, winding manner, etc. of the winding wire 5 may be correspondingly adjusted according to the usage performance of the transformer, and is not limited only herein.

2. The magnetic core 4 is vertically adhered to the base 1. Specifically, the magnetic core 4 may be adhesively fixed to the first boss 11 by adhesive bonding.

3. The winding wire 5 is connected with the guide pin 2 on the base 1. Specifically, the winding 5 may be divided into a primary winding and a secondary winding, the primary winding may be connected to the corresponding pin 2, and the secondary winding may be connected to the corresponding pin 2, so as to implement input and output of the transformer. The connection mode between the winding 5 and the guiding pin 2 can be as follows: the wire 5 is wound directly around the lead 2, or the wire 5 is soldered to the lead 2 by solder paste, which is not limited only.

4. The housing 3 is bonded to the base 1. Specifically, the limiting groove 13 of the base 1 is coated with adhesive, or the bottom of the shell 3 is coated with adhesive, and after the edge of the shell 3 is aligned with the limiting groove 13, the shell 3 and the base 1 are adhered and fixed by the adhesive.

5. Pouring sealant 6 into the accommodating cavity. Specifically, pouring sealant 6 can be poured into the receiving chamber through the sealant pouring hole 30 on the housing 3 and by means of an external sealant pouring device. The pouring sealant 6 can also fill and seal the glue filling hole 30.

It should be understood that the sequence number of each step in the foregoing embodiment does not mean that the execution sequence of each process should be determined by the function and the internal logic of each process, and should not limit the implementation process of the embodiment of the present application in any way. For example, the steps 1 and 2 may be interchanged, i.e. the magnetic core 4 may be adhered to the first boss 11, and then the winding wire 5 is wound on the magnetic core 4.

The transformer prepared by the preparation method has at least the following beneficial effects:

1. the area of the transformer occupied by the circuit board can be reduced, and miniaturization of electronic products is realized.

2. The vibration resistance and the shock resistance of the transformer are improved.

3. The embodiment of the application is mainly aimed at transformers with smaller power, and the transformers are characterized by small size, small inductance and small winding number of 5 turns, such as most small-power pulse transformers, impedance matching transformers under high frequency, radio frequency transformers, driving transformers, isolating transformers and the like, and have low power requirements.

The foregoing description of the preferred embodiments is merely exemplary in nature and is in no way intended to limit the utility model, since it is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the utility model.

Claims (10)

1. A transformer, comprising:

a base;

the guide pin is arranged on the base, and two ends of the guide pin extend out of the base respectively;

the magnetic core is vertically arranged on the base;

the winding is wound on the magnetic core and is connected with one end of the guide pin;

the shell is arranged on the base, and a containing cavity for containing the magnetic core is arranged in the shell.

2. The transformer of claim 1, wherein: the top of base protruding is equipped with first boss, the magnetic core install in on the first boss.

3. A transformer as claimed in claim 2, wherein: the magnetic core is adhered to the first boss.

4. A transformer as claimed in claim 2, wherein: the distance between the top surface of the first boss and the inner wall of the top of the housing is equal to the diameter of the magnetic core.

5. A transformer as claimed in claim 2, wherein: the top of base is protruding to be equipped with the second boss, first boss is located on the second boss, the second boss with form between the top surface of base and supply the border of shell stretches into spacing groove portion.

6. The transformer of claim 1, wherein: the guide pin comprises a first section and a second section, wherein two ends of the first section extend out of the base respectively, the second section is connected with one end of the first section extending into the accommodating cavity, and the second section is inclined to the first section.

7. The transformer of claim 6, wherein: and two ends of the bottom of the base are respectively provided with a heightening seat.

8. The transformer of claim 7, wherein: the distance between the end of the first section far away from the shell and the bottom surface of the base is greater than the thickness of the heightening seat.

9. A transformer according to any one of claims 1-8, characterized in that: and a glue filling hole is formed in the shell, and pouring sealant is filled in the accommodating cavity.

10. A transformer according to any one of claims 1-8, characterized in that: the housing is bonded to the base.