CN220456230U

CN220456230U - Pressure changing device

Info

Publication number: CN220456230U
Application number: CN202321382327.0U
Authority: CN
Inventors: 权宁珠; 李溱浩
Original assignee: Kehui Bilus Co ltd
Current assignee: Kehui Bilus Co ltd
Priority date: 2022-06-13
Filing date: 2023-06-01
Publication date: 2024-02-06
Anticipated expiration: 2033-06-01
Also published as: KR102647780B1; KR20230171247A

Abstract

The utility model discloses a voltage transformation device. A transformer apparatus according to an embodiment of the present utility model includes: a frame part including a 1 st PCB part including a 1 st-1 st coil and having a 1 st pin insertion hole formed at one end, a 2 nd PCB part wound with the 1 st-2 nd coil at a position spaced apart from and facing the 1 st PCB part and having a 2 nd pin insertion hole formed at one end, and a body part between the 1 st PCB part and the 2 nd PCB part for coupling the 1 st PCB part and the 2 nd PCB part and having a 2 nd coil wound outside; a 1 st connection part formed to be inserted into the 1 st pin insertion hole and the 2 nd pin insertion hole to connect the 1 st-1 st coil of the 1 st PCB part and the 1 st-2 nd coil of the 2 nd PCB part to each other; a bracket formed to encase the other end of the 2 nd PCB section; and a 2 nd connection part formed such that a portion is inserted into one end of the bracket and another portion protrudes outward from one side surface of the bracket.

Description

Pressure changing device

Technical Field

Embodiments disclosed herein relate to a transformer apparatus.

Background

The transformer is used as a device for increasing or decreasing an ac voltage using a mutual induction principle, and is used for converting the voltage into a voltage required for a corresponding electronic product. In reality, the above-mentioned transformer device is applied to various electronic devices. In addition, various approaches for miniaturizing the transformer device are under study with miniaturization of the electronic device.

Disclosure of Invention

[ problem ]

The disclosed embodiments aim to provide a voltage transformation device for a flyback (flyback) circuit that can be miniaturized.

Further, the disclosed embodiments aim to provide a transformer apparatus capable of securing a winding space of a secondary coil.

[ technical solution ]

The voltage transformation device according to an embodiment includes: a frame part including a 1 st PCB part including a 1 st-1 st coil and having a 1 st pin insertion hole formed at one end, a 2 nd PCB part including a 1 st-2 nd coil located at a facing position spaced apart from the 1 st PCB part and having a 2 nd pin insertion hole formed at one end, and a body part located between the 1 st PCB part and the 2 nd PCB part for coupling the 1 st PCB part and the 2 nd PCB part and having a 2 nd coil wound outside; a 1 st connection part formed in the 1 st pin insertion hole and the 2 nd pin insertion hole to connect the 1 st coil of the 1 st PCB part and the 1 st coil of the 2 nd PCB part to each other; a bracket coupled to the other end of the 2 nd PCB part; and a 2 nd connection part formed to protrude outward from one side surface of the bracket.

The body part may include a 1 st fastening part protruding from an upper portion of one side, a 2 nd fastening part protruding from a lower portion of the one side, a 3 rd fastening part protruding from an upper portion of the other side, and a 4 th fastening part protruding from a lower portion of the other side.

The 1 st PCB part may be formed with a 1 st core insertion hole penetrating one surface and the other surface, and a part of the 1 st fastening member and the 3 rd fastening member may be respectively contacted and fastened with an inner side surface of the 1 st core insertion hole, and the other part protrudes from one surface of the 1 st PCB part and is fastened.

The 2 nd PCB part may be formed with a 2 nd core insertion hole penetrating one surface and the other surface, and a portion of the 2 nd and 4 th fastening members may be respectively brought into contact with and fastened to inner side surfaces of the 2 nd core insertion hole, and another portion may protrude from one surface of the 2 nd PCB part and be fastened.

The body portion may be formed with a 3 rd core insertion hole penetrating one surface and the other surface, and may further include: a 1 st core part formed to be disposed at one surface of the 1 st PCB part and to be partially inserted into the 1 st core insertion hole and the 3 rd core insertion hole; and a 2 nd core part formed to be disposed at one surface of the 2 nd PCB part and to be partially inserted into the 2 nd and 3 rd core insertion holes.

The 1 st core part may be disposed to form a predetermined space with the 1 st fastening part and the 3 rd fastening part, respectively, with reference to one side of the 1 st PCB part, and the 2 nd core part may be disposed to form a predetermined space with the 2 nd fastening part and the 4 th fastening part, respectively, with reference to one side of the 2 nd PCB part.

The lengths of the 2 nd and 4 th fastening members may be formed longer in the lower direction than the 1 st and 3 rd fastening members.

The bracket may be formed with a PCB coupling hole facing an inner length direction from the other side, and at least one PCB coupling protrusion may be formed at an upper side and a lower side of the inner side of the PCB coupling hole, respectively.

And bracket combining holes can be formed on one surface and the other surface of the 2 nd PCB part and correspond to the at least one PCB combining protrusion, and the 2 nd PCB part is inserted into the PCB combining holes and is fixed through the combination of the bracket combining holes and the PCB combining protrusions.

The other side surface of the bracket, which is close to the other surface of the 2 nd PCB part, can be curved.

The 1 st PCB part, the 2 nd PCB part, and the body part of the skeleton part may be formed in separable shapes, respectively.

The 1 st and 1 st coils and the 1 st and 2 nd coils may be primary coils, and the 1 st and 2 nd PCB parts may be printed circuit substrates, respectively, including a winding pattern of the primary coils formed on one side, or including a winding pattern of the primary coils formed on both sides, or including a winding pattern of the primary coils formed as a single layer, or including a winding pattern of the primary coils formed as multiple layers.

The transforming device according to another embodiment may include a backbone portion composed of a 1 st PCB portion including a 1 st core insertion hole formed through one surface and the other surface of the central portion, a 2 nd PCB portion, and a body portion; the 2 nd PCB part is separated from and faces the 1 st PCB part and comprises a 2 nd core inserting hole which penetrates through one surface of the central part and the other surface of the central part; the body part is located between the 1 st and 2 nd PCB parts and is used for combining the 1 st and 2 nd PCB parts, and the 2 nd coil is wound outside, the body part includes: the first fastening part protruding from the upper part of one side surface, the second fastening part protruding from the lower part of one side surface, the third fastening part protruding from the upper part of the other side surface and the fourth fastening part protruding from the lower part of the other side surface.

The 1 st PCB part may be wound with a 1 st-1 st coil and one end is formed with a 1 st pin insertion hole, the 2 nd PCB part may be wound with a 1 st-2 nd coil and one end is formed with a 2 nd pin insertion hole, and may further include: a 1 st connection part formed in the 1 st pin insertion hole and the 2 nd pin insertion hole to connect the 1 st coil of the 1 st PCB part and the 1 st coil of the 2 nd PCB part to each other; a bracket coupled to the other end of the 2 nd PCB part; and a 2 nd connection part formed to protrude outward from one side surface of the bracket.

A part of the 1 st fastening part and the 3 rd fastening part may be respectively contacted and fastened with an inner side surface of the 1 st core insertion hole, and the other part protrudes from one surface of the 1 st PCB part and is fastened.

A part of the 2 nd and 4 th fastening parts may be respectively contacted and fastened with an inner side surface of the 2 nd core insertion hole, and the other part protrudes from one surface of the 2 nd PCB part and is fastened.

[ beneficial effects ]

According to the disclosed embodiments, the 1 st and 2 nd PCB parts, respectively wound with the 1 st coil, are combined with the body part wound with the 2 nd coil, functioning as a skeleton, so that a winding space can be flexibly ensured according to design specifications to wind the 2 nd coil outside the body part.

Further, in the disclosed embodiment, the 1 st coil and the 2 nd coil are adjacent to each other, and may have a relatively small leakage (leakage) value, and thus an effect used in a flyback circuit in which efficiency increases as the leakage value is smaller may be expected.

In addition, in the disclosed embodiment, the other side surface of the bracket that comes into contact with the 2 nd coil that is drawn out is curved, so that damage to the 2 nd coil can be prevented in advance.

Further, in the disclosed embodiment, when the core is mounted on the PCB portion, a space is formed with reference to one surface of the PCB portion according to the mounting position of the fastening member formed on the body portion, so that the mounted state of the core can be guided while the core can be prevented from being broken by the fastening member.

Drawings

Fig. 1 is an overall structural diagram of a transformer apparatus according to an embodiment.

Fig. 2 is an overall exploded perspective view of a transformer device according to an embodiment.

Fig. 3 is an exploded perspective view of a skeletal section in accordance with an embodiment.

Fig. 4 is a diagram for explaining a winding state of the 2 nd coil according to an embodiment.

Fig. 5 and 6 are diagrams for explaining a combination structure of a 2 nd PCB section and a bracket according to an embodiment.

Fig. 7 is a detailed structural view of a bracket according to an embodiment.

Fig. 8 is a diagram for explaining an arrangement relationship of the 2 nd coil and the bracket according to an embodiment.

Fig. 9 is an exploded perspective view of a transformer apparatus for explaining a core bonding method according to an embodiment.

Fig. 10 is a partially detailed schematic illustration of a transformer apparatus in accordance with an embodiment.

[ description of reference numerals ]

100: the transformer 110: skeleton part

111: 1 st PCB portion 111-1: 1 st pin insertion hole

111-3: 1 st core insertion hole 113: 2 nd PCB portion

113-1: pin 2 insertion hole 113-3: 2 nd core insertion hole

113-5: bracket coupling hole 115: body part

115-1: 1 st fastening part 115-2: no. 2 fastening part

115-3: 3 rd fastening part 115-4: 4 th fastening part

115-5: 3 rd core insertion hole 120: support frame

121: PCB coupling hole 123: PCB bonding protrusion

125: the other side 130 of the bracket: no. 2 connecting part

140: the 1 st connection part 150: 2 nd coil

160: core 161: 1 st core

163: core 2

Detailed Description

Hereinafter, specific embodiments of the present utility model will be described with reference to the accompanying drawings. The following detailed description is provided to facilitate a thorough understanding of the methods, apparatus, and/or systems described herein. This is merely exemplary and the utility model is not limited thereto.

In describing the embodiments of the present utility model, when it is considered that detailed descriptions of related known techniques of the present utility model may obscure the core of the present utility model, detailed descriptions thereof will be omitted. In addition, a plurality of terms to be described later are terms defined in consideration of their functions in the present utility model, which may vary according to the purpose of a user, an operator, a convention, or the like. Accordingly, it should be defined throughout this specification. The terminology used in the detailed description is for the purpose of describing embodiments of the utility model only and is not intended to be limiting in any way. Unless clearly indicated to the contrary, the singular forms include the plural forms. In this description, the terms "comprises" or "comprising" and the like are used to refer to certain features, numbers, steps, operations, factors, parts thereof, or combinations thereof, which are not to be construed as excluding the existence or likelihood of one or more other features, numbers, steps, operations, factors, parts thereof, or combinations thereof other than those described.

On the other hand, directional terms, such as upper, lower, one side, the other side, and the like, are used in connection with the arrangement direction in the accompanying drawings. The components of embodiments of the present utility model can be arranged in a variety of orientations and, therefore, the directional terminology is used for purposes of example and is in no way limiting.

In addition, the terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The term may be used to distinguish one component from another component. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of the present utility model.

Fig. 1 is an overall structural view of a transformer according to an embodiment, fig. 2 is an overall exploded perspective view of the transformer according to an embodiment, fig. 3 is an exploded perspective view of a bobbin according to an embodiment, and fig. 4 is a view for explaining a winding state of a 2 nd coil according to an embodiment.

Referring to fig. 1, the transformer 100 includes a frame 110, a bracket 120, a 2 nd connection member 130, a 1 st connection member 140, and a core 160.

As shown in fig. 2, the skeleton portion 110 includes a 1 st PCB portion 111, a 2 nd PCB portion 113, and a body portion 115.

The 1 st PCB part 111 may include a 1 st coil (not shown) and may be formed at one end with a 1 st pin insertion hole 111-1. In this case, the 1 st coil and the 1 st coil to be described later may be primary coils.

The 1 st PCB section 111 may be formed with a 1 st core insertion hole 111-3 penetrating one surface and the other surface.

The 1 st PCB part 111 may be a printed circuit substrate including a winding pattern of a primary coil (e.g., 1 st-1 st coil) formed on one side, or including a winding pattern of a primary coil formed on both sides, or including a winding pattern of a primary coil formed as a single layer, or including a winding pattern of a primary coil formed as multiple layers.

The 2 nd PCB part 113 may include the 1 st-2 nd coil at a position spaced apart from and facing the 1 st PCB part 111, and one end may be formed with the 2 nd pin insertion hole 113-1. At this time, in order to facilitate insertion of the 1 st connection part 140, the 2 nd pin insertion hole 113-1 may be formed at a position facing the 1 st pin insertion hole 111-1.

The 2 nd PCB part 113 may be formed with a 2 nd core insertion hole 113-3 penetrating one surface and the other surface. At this time, in order to facilitate coupling with the core 160 and the body 115, the 2 nd core insertion hole 113-30 may be formed at a position facing the 1 st core insertion hole 111-3.

The 2 nd PCB part 113 may be a printed circuit substrate including a winding pattern of the primary coil formed on one side, or including a winding pattern of the primary coil formed on both sides, or including a winding pattern of the primary coil formed as a single layer, or including a winding pattern of the primary coil formed as multiple layers. That is, the primary coil may be formed in various patterns on the 1 st PCB section 111 and the 2 nd PCB section 113 according to the needs of the user.

The body part 115 may be located between the 1 st PCB part 111 and the 2 nd PCB part 113 and serve to bond the 1 st PCB part 111 and the 2 nd PCB part 113, and the 2 nd coil 150 may be wound outside. The 2 nd coil 150 may be an insulation-coated coil of a general coil form. Further, the body portion 115 may be composed of an insulating material. The 1 st coil including the 1 st-1 st coil and the 1 st-2 nd coil is a primary coil, the 2 nd coil 150 is a secondary coil, and voltage conversion can be performed by electromagnetic action between the two coils.

Referring to fig. 3, the body portion 115 may have a 3 rd core insertion hole 115-5 formed therethrough.

Referring to fig. 2, the body portion 115 may include a 1 st fastening part 115-1 formed protruding from an upper portion of one side, a 2 nd fastening part 115-2 formed protruding from a lower portion of one side, a 3 rd fastening part 115-3 formed protruding from an upper portion of the other side, and a 4 th fastening part 115-4 formed protruding from a lower portion of the other side.

In this case, the protrusion from the upper portion of the one side surface means that the one side surface is formed to protrude with reference to the one surface of the body 115. That is, after the body portion 115 is coupled to the 1 st PCB portion 111, the 1 st fastening member 115-1 is still formed protruding from one surface of the 1 st PCB portion 111. This structure is equally or similarly applicable to the 2 nd fastening member 115-2, the 3 rd fastening member 115-3, and the 4 th fastening member 115-4. The 1 st fastening member 115-1, the 2 nd fastening member 115-2, the 3 rd fastening member 115-3, and the 4 th fastening member 115-4 may be coupled to the 1 st PCB section 111 and the 2 nd PCB section 113 with an interference fit (interference fit), but is not limited thereto. The 1 st fastening member 115-1, the 2 nd fastening member 115-2, the 3 rd fastening member 115-3, and the 4 th fastening member 115-4 are made of an elastic material, and can be coupled to the 1 st PCB section 111 and the 2 nd PCB section 113.

Referring to fig. 3, a portion of the 1 st fastening part 115-1 and the 3 rd fastening part 115-3 may be respectively contacted and fastened with an inner side surface of the 1 st core insertion hole 111-3, and another portion may be respectively protruded and fastened from one surface of the 1 st PCB part 111. At this time, the other portions of the 1 st fastening part 115-1 and the 3 rd fastening part 115-3 may be defined as another portion or the remaining portion other than the above-described portions.

The 1 st fastening member 115-1 and the 3 rd fastening member 115-3 formed by the protrusion of the body portion 115 may form a stepped structure, and thus, when the 1 st core portion 161 is coupled to the body portion 115 later, it may be coupled in a form of being disposed in a recessed region of the stepped structure. Therefore, the present embodiment can improve the coupling force between the 1 st core portion 161 and the body portion 115. Further, since the transformer 100 has a relatively low structure with reference to the height direction, the present embodiment can expect the effect of miniaturization as a whole.

A part of the 2 nd and 4 th fastening members 115-2 and 115-4 may be respectively contacted and fastened with the inner side surface of the 2 nd core insertion hole 113-3, and another part may be respectively protruded and fastened from one surface of the 2 nd PCB part 113. At this time, the other portions of the 2 nd and 3 rd fastening members 115-2 and 115-4 may be defined as another portion or the remaining portion other than the above-mentioned portions.

The 2 nd fastening member 115-2 and the 4 th fastening member 115-4 formed by the protrusion of the body portion 115 may form a stepped structure, and thus, when the 2 nd core portion 163 is coupled to the body portion 115, it may be coupled in a form of being disposed in a recessed region of the stepped structure. Therefore, the present embodiment can improve the coupling force between the 2 nd core portion 163 and the body portion 115. Further, since the transformer 100 has a relatively low structure with reference to the height direction, the present embodiment can expect the effect of miniaturization as a whole.

In addition, referring to fig. 2 and 3, the lengths of the 2 nd and 4 th fastening members 115-2 and 115-4 may be formed to be longer in the lower direction than the 1 st and 3 rd fastening members 115-1 and 115-3. Therefore, the transformer 100 can function as a substrate mounting portion when mounted on a substrate (not shown). That is, the lengths of the 2 nd and 4 th fastening members 115-2 and 115-4 protruding after being disposed on the 2 nd PCB part 113 are formed longer than the lengths of the 1 st and 3 rd fastening members 115-1 and 115-3 protruding after being disposed on the 1 st PCB part 111. Accordingly, the 2 nd and 4 th fastening members 115-2 and 115-4 may function to mount and fix the transforming device 100 to a substrate (not shown). The lengths extending in the lower directions of the 2 nd and 4 th fastening members 115-2 and 115-4 may be determined according to specifications in which the transforming device 100 can be stably mounted on a substrate.

The bobbin 110 as described above has a structure in which the 2 nd coil 150 can be wound after the 1 st PCB 111, the 2 nd PCB 113, and the body 115 are joined. Referring to fig. 3 and 4, the present embodiment omits an additional flange portion, and instead may function as a flange portion by the 1 st PCB portion 111 and the 2 nd PCB portion 113. Thus, the present embodiment can further secure the winding space of the 2 nd coil 150, compared with a structure in which an additional flange portion is provided in the main body portion, and therefore, an effect of further winding the 2 nd coil in the a direction and the B direction according to the specification spec can be expected. Not only this, the winding space of the 2 nd coil 150 can be reduced according to the specification. In addition, the present embodiment can achieve miniaturization and weight reduction of the transformer apparatus 100 by omitting an additional flange portion.

In addition, the present embodiment may employ the following structure: the distance between the 1 st coil (not shown) formed in the form of a pattern on the PCB part and the 2 nd coil 150 formed of an insulating coil is very close. In addition, the present embodiment may employ the following sandwich structure: the 2 nd coil 150, which is an insulation coil, is interposed between the 1 st PCB portion 111 and the 2 nd PCB portion 113, on which the 1 st coil is formed. Thus, the transformer apparatus 100 of the present embodiment can form a relatively small leakage value (leakage). In addition, the transformer apparatus 100 of the present embodiment is applicable to a flyback circuit in which the efficiency increases as the leakage value is smaller.

The 1 st PCB section 111, the 2 nd PCB section 113, and the main body section 115 of the skeleton section 110 may be formed separately. Thus, the present embodiment adjusts the winding space of the 2 nd coil 150 by the user adjusting the size of the body portion 115 according to the required specification.

Fig. 5 and 6 are diagrams for explaining a coupling structure of a 2 nd PCB section and a bracket according to an embodiment, fig. 7 is a detailed structural view of the bracket according to an embodiment, and fig. 8 is a diagram for explaining an arrangement relationship of a 2 nd coil and the bracket according to an embodiment.

The bracket 120 may be formed in a form coupled to the other end of the 2 nd PCB section 113. Specifically, the bracket 120 may be formed in a form to wrap the other end of the 2 nd PCB part 113.

Referring to fig. 5, the bracket 120 is formed with a PCB coupling hole 121 facing an inner length direction from the other side, and at least one PCB coupling protrusion 123 may be formed on an inner upper surface and a lower surface of the PCB coupling hole 121, respectively.

Referring to fig. 5 and 6, bracket coupling holes 113-5 may be formed at positions corresponding to the at least one PCB coupling protrusion 123 on one and the other sides of the 2 nd PCB portion 113, respectively. The 2 nd PCB portion 113 is inserted into the PCB coupling hole 121 and is fixed by the combination of the bracket coupling hole 113-5 and the PCB coupling protrusion 123. At this time, the 2 nd PCB section 113 is slidably fastened in the PCB coupling hole 121 so that the bracket coupling hole 113-5 and the PCB coupling protrusion 123 can be coupled to each other. The bracket coupling hole 113-5 and the PCB coupling protrusion 123 may be coupled to each other in an interference fit (interference fit), but are not limited thereto.

Referring to fig. 7, the other side 125 of the bracket 120, which is adjacent to the other side of the 2 nd PCB portion 113, may be curved. As shown in fig. 8, when the 2 nd coil 150 is drawn along the upper portion of the holder 120, the other side 125, which is the region of the holder 120 where contact occurs, is smoothly curved instead of sharp right angles, so that damage to the 2 nd coil 150 can be prevented in advance. The drawn-out 2 nd coil 150 may be joined to the 2 nd connection member 130 by a welding process or the like, not shown, to achieve conduction.

The 2 nd coupling part 130 may be protruded and formed outwardly from one side surface of the bracket 120.

Specifically, the 2 nd coupling member 130 may be formed such that a portion is inserted into one side of the bracket 120 and another portion is protruded to the outside. At this time, another portion of the 2 nd connection member 130 may refer to the remaining portion other than a portion. As shown in fig. 8, the portion of the 2 nd coupling member 130 protruding outward may be formed in a shape curved in a downward direction with reference to a plane, but is not limited thereto.

The 1 st connection part 140 may be formed in the 1 st pin insertion hole 111-1 and the 2 nd pin insertion hole 113-1 to interconnect the 1 st-1 st coil of the 1 st PCB part 111 with the 1 st-2 nd coil of the 2 nd PCB part 113. At this time, as the 1 st connection part 140 is inserted into the 1 st pin insertion hole 111-1 and the 2 nd pin insertion hole 113-1, the 1 st-1 st coil of the 1 st PCB part 111 and the 1 st-2 nd coil of the 2 nd PCB part 113 may be conducted to each other.

Fig. 9 is an exploded perspective view of a transformer apparatus for explaining a core bonding method according to an embodiment, and fig. 10 is a partially detailed schematic view of the transformer apparatus according to an embodiment.

The core 160 includes a 1 st core 161 and a 2 nd core 163.

Referring to fig. 9, the 1 st core 161 may be formed to be disposed at one side of the 1 st PCB section 111 and formed such that a portion 161-1 is inserted into the 1 st core insertion hole 111-3 and the 3 rd core insertion hole 115-5.

The 2 nd core part 163 may be formed to be disposed at one side of the 2 nd PCB part 113 and formed such that a portion 163-1 is inserted into the 2 nd core insertion hole 113-3 and the 3 rd core insertion hole 115-5.

The 1 st core 161 and the 2 nd core 163 are EE-shaped such that a portion thereof is inserted into the 1 st core insertion hole to the 3 rd core insertion holes 111-3, 113-3 and 115-5, respectively, but are not limited thereto. The 1 st core 161 and the 2 nd core 163 may be core portions of various shapes such as EI shape, EVD shape, EED shape, EP shape, EEH shape, etc. The core 160 may have a portion of at least one of the 1 st core 161 and the 2 nd core 163 inserted into the 1 st core insertion hole to the 3 rd core insertion holes 111-3, 113-3, and 115-5 according to its shape.

Referring to fig. 10, the 1 st core 161 is disposed to form a predetermined spaced-apart space C with the 1 st fastening part 115-1 and the 3 rd fastening part 115-3, respectively, with reference to one surface of the 1 st PCB part 111. In this case, the space formed with reference to one surface of the 1 st PCB section 111 may be a space formed with reference to the horizontal direction.

Also, the 2 nd core 163 is disposed to form a predetermined spaced-apart space with the 2 nd and 4 th fastening parts 115-2 and 115-4, respectively, with reference to one side of the 2 nd PCB part 113. In this case, the space formed with reference to one surface of the 2 nd PCB section 113 may be a space formed with reference to the horizontal direction.

The 1 st fastening member 115-1, 2 nd fastening member 115-2, 3 rd fastening member 115-3, and 4 th fastening member 115-4 described above serve as guides for positioning the 1 st core 161 and the 2 nd core 163 to accurate positions by supporting the side surfaces of the 1 st core 161 and the 2 nd core 163. Further, in the present embodiment, by forming the space C between the side surfaces of the 1 st core 161 and the 2 nd core and the 1 st to 4 th fastening members 115-1, 115-2, 115-3 and 115-4, the 1 st core 161 and the 2 nd core can be prevented from being broken by contact in advance.

In the transformer 100, the frame portion 110 may be formed by first coupling the 1 st PCB portion 111, the 2 nd PCB portion 113, and the main body portion 115. Then, the bracket 120 may be coupled to the other end of the 2 nd PCB portion 113. At this time, after the bracket 120 is coupled to the 2 nd PCB portion 113, an effect of fixedly coupling the wound 2 nd coil 150 may be expected as the 2 nd coil 150 is wound. Then, the 2 nd coil 150 may be wound outside the body portion 115 of the bobbin 110. Then, the 1 st connection member 140 is inserted into the 1 st pin insertion hole 111-1 formed in the 1 st PCB portion 111 and the 2 nd pin insertion hole 113-1 formed in the 2 nd PCB portion 113, so that the 1 st coil patterned in the 1 st PCB portion 111 and the 2 nd PCB portion 113 can be conducted to each other. At this time, the 1 st coil includes 1 st-1 st coil and 1 st-2 nd coil, and may be a primary side coil. Then, the core 160 composed of a pair of the 1 st core 161 and the 2 nd core 163 may be bonded to the skeleton portion 110. Specifically, the 1 st core 161 and the 2 nd core 163 may be respectively disposed to the 1 st PCB part 111 and the 2 nd PCB part 113. At this time, a portion 161-1 of the 1 st core 161 may be inserted and coupled into the 1 st core insertion hole 111-3 and the 3 rd core insertion hole 115-5, and a portion 163-1 of the 2 nd core 163 may be inserted and coupled into the 2 nd core insertion hole 113-3 and the 3 rd core insertion hole 115-5.

In addition, the transformer 100 according to the present embodiment described above may be implemented by the skeleton portion 110 alone, and the skeleton portion 110 includes the 1 st PCB portion 111, the 2 nd PCB portion 113, and the body portion 115. In this case, the 1 st PCB 111, the 2 nd PCB 113, and the body 115 of the skeleton portion 110 may be members having the same function as the 1 st PCB 111, the 2 nd PCB 113, and the body 115 disclosed in fig. 1 to 10, and thus detailed description thereof will be omitted.

While the exemplary embodiments of the present utility model have been described in detail, those skilled in the art to which the utility model pertains will appreciate that various modifications may be made without exceeding the scope of the utility model. Thus, the scope of the claims of the present utility model should not be limited by the embodiments described above, but should be determined by the claims and their equivalents.

Claims

1. A transformer apparatus, comprising:

a frame part including a 1 st PCB part including a 1 st-1 st coil and having a 1 st pin insertion hole formed at one end, a 2 nd PCB part including a 1 st-2 nd coil located at a facing position spaced apart from the 1 st PCB part and having a 2 nd pin insertion hole formed at one end, and a body part located between the 1 st PCB part and the 2 nd PCB part for coupling the 1 st PCB part and the 2 nd PCB part and having a 2 nd coil wound outside;

a 1 st connection part formed in the 1 st pin insertion hole and the 2 nd pin insertion hole to connect the 1 st coil of the 1 st PCB part and the 1 st coil of the 2 nd PCB part to each other;

a bracket coupled to the other end of the 2 nd PCB part; and

and a 2 nd connection part formed to protrude outward from one side surface of the bracket.

2. The transformer apparatus of claim 1, wherein the body part comprises a 1 st fastening part formed protruding from an upper portion of one side, a 2 nd fastening part formed protruding from a lower portion of the one side, a 3 rd fastening part formed protruding from an upper portion of the other side, and a 4 th fastening part formed protruding from a lower portion of the other side.

3. The transformer apparatus of claim 2, wherein the 1 st PCB part is formed with a 1 st core insertion hole penetrating one surface and the other surface, and a part of the 1 st fastening member and the 3 rd fastening member are respectively contacted and fastened with an inner side surface of the 1 st core insertion hole, and the other part is protruded from one surface of the 1 st PCB part and fastened.

4. A transformer apparatus according to claim 3, wherein the 2 nd PCB section is formed with a 2 nd core insertion hole penetrating one surface and the other surface, and a part of the 2 nd fastening member and the 4 th fastening member are respectively brought into contact with and fastened to an inner side surface of the 2 nd core insertion hole, and the other part is protruded from and fastened to one surface of the 2 nd PCB section.

5. The transformer apparatus of claim 4, wherein the body portion is formed with a 3 rd core insertion hole penetrating one surface and the other surface, further comprising:

a 1 st core part formed to be disposed at one surface of the 1 st PCB part and to be partially inserted into the 1 st core insertion hole and the 3 rd core insertion hole; and

a 2 nd core part formed to be disposed at one side of the 2 nd PCB part and partially inserted into the 2 nd and 3 rd core insertion holes.

6. The transformer apparatus of claim 5, wherein the 1 st core part is disposed to form a predetermined space with the 1 st fastening part and the 3 rd fastening part with reference to one surface of the 1 st PCB part, respectively,

the 2 nd core part is disposed to form a predetermined space with the 2 nd fastening part and the 4 th fastening part, respectively, with reference to one surface of the 2 nd PCB part.

7. The transformer apparatus of claim 2, wherein lengths of the 2 nd and 4 th fastening members are formed to be longer in a lower direction than those of the 1 st and 3 rd fastening members.

8. The transformer apparatus of claim 1, wherein the bracket is formed with a PCB coupling hole facing an inner length direction from the other side, and at least one PCB coupling protrusion is formed at an upper surface and a lower surface of an inner side of the PCB coupling hole, respectively.

9. The transformer apparatus of claim 8, wherein bracket coupling holes are formed at positions corresponding to the at least one PCB coupling protrusion on one and the other sides of the 2 nd PCB portion, respectively, and the 2 nd PCB portion is inserted into the PCB coupling holes and is fixed by coupling the bracket coupling holes and the PCB coupling protrusions.

10. The transformer apparatus of claim 1, wherein the other side of the bracket adjacent to the other side of the 2 nd PCB section is curved.

11. The transformer apparatus of claim 1, wherein the 1 st PCB portion, the 2 nd PCB portion, and the body portion of the bobbin portion are respectively formed in separable forms.

12. The transformer apparatus of claim 1, wherein the 1 st and 1 st coils are primary coils, and the 1 st and 2 nd PCB parts are printed circuit substrates including a winding pattern of the primary coils formed on one side, or including a winding pattern of the primary coils formed on both sides, or including a winding pattern of the primary coils formed as a single layer, or including a winding pattern of the primary coils formed as multiple layers, respectively.

13. A voltage transformation device is characterized by comprising a framework part, wherein the framework part consists of a 1 st PCB part, a 2 nd PCB part and a body part,

the 1 st PCB part comprises a 1 st core inserting hole which penetrates through one surface and the other surface of the central part and is formed;

the 2 nd PCB part is separated from and faces the 1 st PCB part and comprises a 2 nd core inserting hole which penetrates through one surface of the central part and the other surface of the central part;

the body part is positioned between the 1 st PCB part and the 2 nd PCB part and is used for combining the 1 st PCB part and the 2 nd PCB part, a 2 nd coil is wound outside the body part,

the body portion includes:

the first fastening part protruding from the upper part of one side surface, the second fastening part protruding from the lower part of one side surface, the third fastening part protruding from the upper part of the other side surface and the fourth fastening part protruding from the lower part of the other side surface.

14. The transformer apparatus of claim 13, wherein the 1 st PCB portion is wound with the 1 st coil and has a 1 st pin insertion hole formed at one end, the 2 nd PCB portion is wound with the 1 st coil and has a 2 nd pin insertion hole formed at one end,

further comprises:

a bracket coupled to the other end of the 2 nd PCB part; and

15. The transformer apparatus of claim 13, wherein a part of the 1 st fastening member and the 3 rd fastening member are respectively brought into contact with and fastened to an inner side surface of the 1 st core insertion hole, and the other part is protruded from and fastened to one surface of the 1 st PCB portion,

and a part of the 2 nd fastening part and a part of the 4 th fastening part are respectively contacted and fastened with the inner side surface of the 2 nd core insertion hole, and the other part is protruded from one surface of the 2 nd PCB part and fastened.