KR200375009Y1 - transformer module - Google Patents

Abstract

The present invention relates to a transformer module, and more particularly, to a transformer module used in a backlight unit inverter for an LCD TV or an LCD monitor.

The transformer module according to the present invention has a bobbin body and a core having a low voltage terminal board and a high voltage terminal board formed on both sides, and a bobbin body part and a core insertion hollow part partitioned into primary and secondary coil winding parts around a coil partition. In the transformer module made of a coupling, when the terminal board is formed so as not to protrude on the side of the bobbin and the terminal board inserting portion is formed on the front surface of the core of the core, the core completely surrounds the bobbin and the bottom of the core. It is configured to be located at the same position as the bottom of the bobbin. In addition, by forming a support groove of a predetermined depth on one side of the bobbin and constitutes a core support of a certain height so that the core support is detachably coupled to the support groove.

The present invention configured as described above has improved the characteristics of the transformer by increasing the cross-sectional area of the core, and improved the efficiency of the transformer by improving the Bm value and power loss, and it is possible to use different types of cores with one type of bobbin. Reduced mold price In addition, by changing the shape of the core and the bobbin to completely cover the side of the bobbin exposed to the outside by reducing the EMI (electromagnetic interference).

Description

Transformer module

The present invention relates to a transformer module, and more particularly, to a transformer module used in a backlight unit inverter for an LCD TV or an LCD monitor.

Recently, with the development of display devices, LCD monitors and LCD TVs are widely used. LCDs have fluorescent tubes driven at high pressure for backlight systems. In general, an inverter with a drive circuit is used to drive the fluorescent tube, which has a high voltage transformer. Therefore, the transformer used to minimize the size needs to have a thin plate type structure.

Transformers are devices that increase or decrease the voltage of alternating current. They are usually manufactured by winding several wire coils around a large magnet core. One coil, called the primary coil, is connected to the input circuit to change the voltage, and the other coil, called the secondary coil, is connected to the output circuit using the changed (converted) voltage. When passing through the primary coil, a magnetic field is generated that changes in intensity and direction in response to the alternating current. The change in magnetic flux induces an alternating voltage in the secondary coil and the winding ratio in each coil determines the transformer ratio.

Referring to Figure 1 (a) (b) of the transformer module according to the prior art that serves as such as follows.

As shown, referring to FIG. 1 (a), the conventional transformer module 1 forms a low voltage and high voltage terminal board 12 having terminals 11 on both sides and between the terminal boards 12. The bobbin body portion 18 and the bobbin body provided with the core insert hollow portion 13 formed therein so as to insert the "E" type core 20 having the same width as the terminal board 12 in both directions therein. The coil partition 16 which divides the outer peripheral surface of the part 18 into the primary coil winding 14 and the secondary coil winding 15, and the several separator which divides the secondary coil winding 15 by regular space | interval. It is formed of a bobbin (10) consisting of (17) and the core core 21 is inserted into the core insertion hollow portion 13 of the bobbin 10 and the outer core 22 integral with the heavy core (21). Consists of a combination of E ″ type cores 20.

Referring to Fig. 1 (b), as shown, the conventional transformer module 1 'of another system has a low voltage and high voltage terminal board 12' having low and high voltage terminals 11 'on both sides. ) And insert an "I" type core as a heavy core 21 'into the bobbin 10' which forms the coil windings 14 'and 15' to which the primary and secondary coils are wound. And a support that protrudes at a certain height from the terminal board 12 'of one of the both side terminal boards 12' of the bobbin 10 '. 19) is integrally formed so that the heavy core 21 'inserted into the bobbin 10' can be fixedly supported.

Looking at the combination of the conventional transformer module (1, 1 ') as described above, by converting the current received from the primary coil windings (14, 14') from the coil to the magnetic flux through the core (20, 20 ') By transferring to the secondary coil windings (15, 15 ') to make the magnetic flux in the secondary coil by the current induction action. The core 20, 20 ′ acts as an intermediate bridge, and the magnetic flux inside the core 20, 20 ′ also changes in that direction while the primary side is changed to alternating current.

However, such a conventional transformer (1,1 ') is designed by the core (20, 20') is mounted on the bobbin (10, 10 '), the terminal board (12, 12') of the bobbin Cores 20 and 20 'are positioned on the side of the coils 18 and 18' to the height of the terminal boards 12 and 12 'to expose the side surfaces of the coil wound to the outside. Therefore, there is a problem that the loss of current to the side of the bobbin (10, 10 ') exposed to reduce the efficiency by reducing the characteristic value of the transformer, EMI (electromagnetic interference) occurs.

In addition, the cross-sectional area of the cores 20 and 20 'is relatively small, and the efficiency of the transformers 1 and 1' that increases or decreases the voltage of the alternating current becomes relatively low, and the cores 20 and 20 'are used. Depending on the shape of the bobbin (10, 10 ') is different from the mold of the different bobbin (10, 10') to produce a mold, there is a problem that the cost of the entire transformer module (1, 1 ') increases.

The present invention is to solve the above problems, and more specifically, in the transformer module to form a terminal board inserting portion on the outer core front of the core and the bobbin terminal board can be wrapped around the terminal board inserting portion of the core By forming the core to increase the cross-sectional area of the core and configured to completely wrap the core without the side of the bobbin exposed to the outside, forming a support groove on one side of the bobbin and detachable coupling of the core support to the support groove Configure to

In addition, it is an object to configure the transformer module irrespective of the type of core to be bonded by one type of bobbin.

Figure 1 (a) (b) is an exploded perspective view of a transformer module of the prior art.

Figure 2 is an exploded perspective view of a transformer module of one embodiment according to the present invention.

Figure 3 is a perspective view of the combination of the transformer module of one embodiment according to the present invention.

Figure 4 is an exploded perspective view of another embodiment according to the present invention.

Figure 5 (a) (b) is a perspective view of a combination of another embodiment according to the present invention.

6 is a perspective view of a transformer module using a plurality of bobbins according to the present invention.

Figure 7 (a) (b) is a plan view showing the core of the transformer module using a plurality of bobbin according to the present invention.

8 is a perspective view of another embodiment using a plurality of bobbins according to the present invention.

Figure 9 (a) (b) is a plan view showing a core of another embodiment using a plurality of bobbin according to the present invention.

*** Explanation of symbols for the main parts of the drawing ***

100: transformer module 110: coil

120,120 ': Core 121,121': Heavy core

122,122 ': External core 123,123': Terminal board insert

124,124 ': Middle outer core 130: Bobbin body

131: primary coil winding unit 132: secondary coil winding unit

133: coil partition 134: separator

140,140a: Bobbin Terminal Board 141,141a: Terminal

150: bobbin 160: heavy core support

161: Heavy Core Support Home

In order to achieve the above object, the present invention forms a low and high voltage terminal board each having a terminal on both sides, and is integrated with the terminal board, and is divided into a primary coil winding part and a secondary coil winding part around a coil partition and cored. In the transformer module consisting of a combination of a core consisting of a core and an external core to be inserted into the core insertion hollow portion of the bobbin and the core of the bobbin body portion forming an insertion hollow, the core can completely wrap the bobbin And it is configured so that the side of the bobbin is not exposed to the outside, and provides a transformer module configured to be coupled to one type of bobbin irrespective of the type of core.

A terminal terminal insert having a predetermined size is formed as a front portion of the external core of the core, and the terminal board of the bobbin is formed in such a manner that a part of the bobbin is protruded and wrapped around the terminal board, and one of both terminal boards of the bobbin is formed. Forming a support groove of a certain depth on the side and configured to detachable heavy core support having a certain length and a certain height is coupled to the support groove.

The terminal board is formed in a plate shape having a predetermined length and height so as not to protrude on the side surface of the bobbin is wrapped by the terminal board inserting portion formed in the front surface of the outer core of the core and the core is in contact with the bottom By forming so that the cross-sectional area of the core is widened.

In addition, the core completely surrounds the bobbin so that EMI (electromagnetic interference) through the exposed side of the bobbin is reduced.

In addition, the heavy core support that is coupled to the support groove of the terminal board of the one side is detachable is coupled or removed depending on the shape of the core used and the bobbin is in one form regardless of the shape of the core coupled to the bobbin. It can be manufactured.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 2 shows an exploded perspective view of a transformer module of one embodiment according to the present invention, Figure 3 is a combined perspective view of a transformer module of another embodiment according to the present invention, Figure 4 is an exploded view of another embodiment according to the present invention Figure 5 (a) (b) is a perspective view of a combination of another embodiment according to the present invention. 6 is a perspective view of a transformer module using a plurality of bobbins according to the present invention, Figure 7 (a) (b) is a plan view showing the core of the transformer module using a plurality of bobbins according to the present invention, Figure 8 is the present invention 9 is a perspective view of another embodiment using a plurality of bobbin according to Figure 9 (a) (b) is a plan view showing a core of another embodiment using a plurality of bobbin according to the present invention.

As shown in Figure 2 and Figure 3, the transformer module 100 according to the present invention is a bobbin body consisting of a bobbin body portion 130 and the terminal substrate 140 to form a core insertion hollow portion 135 ( 150 and an "E" type core 120 coupled to the bobbin 150.

The bobbin body portion 130 of the bobbin 150 is formed in the shape of a square tube core core hollow portion 135 in the center and the coil partition 133 of a certain size and height on the outer peripheral surface to form a primary The coil winding part 131 is divided into a secondary coil winding part 132 on the other side, and a plurality of separators 134 are formed in the secondary coil winding part 132 at regular intervals, according to a desired voltage. The number of windings of the coil 110 may be determined.

The terminal board 140 of the bobbin 150 is a plate shape having a predetermined length and height on the side surface of the bobbin 150 to a predetermined size and having a low voltage terminal board 140 having a plurality of low pressure terminals 141. The high voltage terminal board 140a having a plurality of high voltage terminals 140a is integrally formed with both sides of the bobbin body 130.

The core 120 is an "E" type core 120 formed of a heavy core 121 that is tightly inserted into the core insertion hollow part 135 and an external core 122 integral with the heavy core 121. Both sides of the bobbin 150 are respectively coupled to completely wrap the bobbin 150.

When the “E” type core 120, which is half the length of the bobbin body 130, is coupled to the bobbin 150, both sides of the core 120 are located within the core insertion hollow 135. The outer core 122 is in contact with each other on the outer surface of the bobbin body portion 130, the front substrate of the outer core 122 to the terminal board 140 of the bobbin to be penetrated and wrapped When the bobbin 150 and the core 120 are coupled to each other to form a terminal board insertion part 123 having the same size as that of the terminal board 140, the terminal board 140 is connected to the terminal board insertion part 123. ) Is wrapped by the formed core 120 and is configured to protrude a portion to the outside. The protruding terminal substrate 140 may isolate the heavy core 121 and the terminal 141 to prevent the electromagnetic field from being affected.

The transformer module 100 configured as described above forms the terminal board 140 of the bobbin 150 in a form in which the terminal board inserting portion 123 of the core 120 can be wrapped to form the terminal board 140. Part of the core 120 is completely protruded and the bobbin 150 is completely covered by the core 120 so that the cross-sectional area of the core 120 is increased, EMI is reduced, and the efficiency and characteristic values of the transformer 100 are reduced. Makes it excellent.

4 and 5 (a) (b), another embodiment of the transformer module 100 according to the present invention is a bobbin body portion (not shown) and the terminal forming a core insertion hollow portion 135 A bobbin 150 composed of a substrate 140, a "I" type core 120 'coupled to the bobbin 150, and a "UI" type core 120 composed of a "U" type external core 122'. ') Is made of a combination.

The bobbin 150 forms a support groove groove 161 of a predetermined depth on one side of the terminal substrate 140 formed on both sides in the same shape as the bobbin 150 in one embodiment according to the present invention, the support Removably coupled to the groove 161 and has a length equal to the width of the terminal substrate 140 and forms a heavy core support 160 having a predetermined height.

The “I” type heavy core 121 ′ is tightly inserted into the core insertion hole 135 of the bobbin 150 and supported by the heavy core support 160 coupled to the bobbin 150 to be fixed. do.

The “U” type outer core 122 ′ has terminal board inserting portions 123 ′ having the same size as the shape of the terminal board 140 so that the terminal board 140 of the bobbin can pass to both front portions thereof. When it is coupled to the terminal board 140 passes through and configured to protrude outward to a part and has a size and shape that can completely wrap the bobbin 150.

The support groove 161 formed in the terminal board 140 of the bobbin 150 may be located at the outer end of the terminal board 140 or the inner end of the bobbin 150 to couple to the support groove 161. The core support 160 may be fluidly changed by being positioned outside or inside the core 120 ′ in accordance with the length of the heavy core 121 ′ inserted into the hollow core insertion hole 135 of the bobbin. It is configured to be.

Referring to FIG. 6, as shown, the present invention includes two bobbins 150 having a primary coil winding and a secondary coil winding, and a core insertion hollow portion formed in each of the bobbins 150 (not shown). The core module 121 and the core 120 formed of the external core 122 are combined to be inserted together in the transformer module 100.

After the bobbins 150 are aligned to each other so that the terminal boards 140 are aligned with each other, the cores 120 having the terminal board inserting portions 123 are combined to fit the size of the aligned terminal boards 140 and then transformers are coupled to each other. Configure module 100.

As described above, referring to FIG. 7 (a) and (b), when the transformer form module 100 using the two bobbins 150 combines an “E” type core 120, the bobbins 150 may be used. Two cores 121 are formed by using a combination of cores 120 formed to correspond to a hollow core insertion hollow portion (not shown.), And when the "UI" type cores 120 'are combined, the alignment is performed. Two "I" type cores 121 'to correspond to the outer core 122' of the size that can completely wrap the two bobbin and the hollow core insertion hollow portion (not shown) formed in the bobbin 150. By combining).

Referring to FIG. 8, as shown in the present invention, when constructing a transformer module using the two bobbins, an outer core middle part is further configured to increase the cross-sectional area of the core.

After the bobbin 150 to be aligned side by side to form a transformer module 100 by combining the core 120 is formed with a terminal board inserting portion 123 to match the size of the aligned terminal board 140, Coupling core 120 is further configured to position the outer core middle portion 124 to be located between the bobbin and the bobbin 150. The outer core middle portion 124 is configured to have the same length as the length of the outer core side of the core.

As described above, referring to Figure 9 (a) (b), the transformer module 100 using the two bobbin 150 is coupled to the bobbin 150 when coupled with the "E" type core 120 Two cores 121 are formed to correspond to the formed hollow core insertion hollows (not shown), and the cores 120 having the outer cores 124 formed therebetween are coupled between the two cores 121. Use it.

The outer core middle portion 124 is formed integrally with the outer core, the same as the side length of the outer core 122 of the core 120, or stand-alone to be the same as the side length of the core 120 coupled to both sides Is formed to be positioned between the bobbin and the bobbin 150.

When combined with a “UI” type core 120 ′, the outer core 122 ′ may be sized to completely wrap the aligned two bobbins 150 and be positioned between the bobbins and the bobbin 150. The outer core 122 'and the hollow core insertion hollow portion formed in the bobbin 150, which are the same length as the side and are integral with the outer core 122' or have an independent outer core middle portion 124 '. By using two "I" type heavy cores 121 'to correspond.

As described above, not only two bobbins 150 but also a plurality of bobbins 150 may be used to configure the transformer module 100, and the shape of the cores 120 and 120 ′ may be determined according to the number of the bobbins 150. It is a fact that anyone can know.

The present invention described above is possible to those skilled in the art to which the invention belongs, various modifications and changes can be made within the scope without departing from the spirit of the present invention in the above-described embodiment and the accompanying drawings It is not limited.

As described above, according to the present invention, the terminal board inserting portion is formed on the outer core front of the core, and the terminal board of the bobbin is formed in such a shape that the terminal board inserting portion of the core can be wrapped to increase the cross-sectional area of the core and move the bobbin to the outside. It provides a transformer module configured to completely wrap the core without the exposed side. Therefore, the cross-sectional area of the core is increased and the characteristics of the transformer are improved, thereby improving the Bm value and power loss, and improving the efficiency of the transformer. In addition, by changing the shape of the core and the bobbin to completely cover the bobbin with the core to reduce the EMI (Electromagnetic Interference), it is possible to configure the transformer module irrespective of the type of core to combine with one type of bobbin.

Claims (11)

A terminal board having a plurality of terminals is formed on both sides, and is integrated with the terminal board. The coil is divided into a primary coil winding part and a secondary coil winding part around a coil partition, and a coil is wound around the core. In the transformer module consisting of a combination of a bobbin consisting of a bobbin body portion of the square tube form and a core consisting of a core core inserted into the core insertion hollow portion of the bobbin and an outer core surrounding the outside of the bobbin, Bobbins formed on both sides of the plate-shaped terminal board so as not to protrude on the side of the bobbin body portion; The core can be inserted into the hollow portion closely and has the same length as that of the core and the hollow core having a half length of the core insertion hollow portion and the terminal board of the bobbin is closely inserted through the front portion. Combining the "E" type core consisting of an external core formed with a terminal board inserting portion with the same size as the front portion of the terminal board to both sides of the bobbin, the core completely wraps the body of the bobbin and the core A transformer module, characterized in that the bottom surface of the bobbin is configured to be positioned at the same position as the bottom surface. A terminal board having a plurality of terminals is formed on both sides, and is integrated with the terminal board. The coil is divided into a primary coil winding part and a secondary coil winding part around a coil partition, and a coil is wound around the core. In the transformer module consisting of a combination of a bobbin consisting of a bobbin body portion of the square tube form and a core consisting of a core core inserted into the core insertion hollow portion of the bobbin and an outer core surrounding the outside of the bobbin, A bobbin which forms a plate-shaped terminal board so as not to protrude on a side surface on both sides and a support groove having a predetermined depth and size on one of the two terminal boards; A heavy core support of a predetermined size that is detachably coupled to the support groove to support and fix the heavy core; A “I” type core having a size that can be penetrated closely through a core insertion hollow portion formed in the bobbin body portion; "UI" consisting of a "U" type external core which has a size and a shape that can completely wrap the bobbin inserted into the core and has a terminal board inserting portion having a length and a height equal to the size of the front portion of the terminal board with both front portions. Comprising the coupling of the core, the core is characterized in that the transformer completely wraps the body of the bobbin and configured so that the bottom of the core can be located in the same position as the bottom of the bobbin. The transformer module according to claim 2, wherein a bobbin having a support groove having a predetermined depth and a size formed on one side of the terminal board formed on both sides can be used in combination with an "E" type core with the support removed. . The transformer module of claim 2, wherein the support groove is positioned at an outer end of the terminal board and is disposed outside the core surrounding the bobbin. The method of claim 2, wherein the support groove is located in the inner side of the terminal substrate close to the insertion hollow portion of the bobbin heavy core support coupled to the support groove is located inside the core surrounding the bobbin. Transformer module. The transformer module according to claim 1 or 2, wherein the terminal board of the bobbin is partially protruded to the outside of the front part of the core to isolate the core and the terminal and prevent the electromagnetic field from being affected by the transformer board. A terminal board having a plurality of terminals is formed on both sides, and is integrated with the terminal board. The coil is divided into a primary coil winding part and a secondary coil winding part around a coil partition, and a coil is wound around the core. In the transformer module consisting of a combination of a bobbin consisting of a bobbin body portion of the square tube form and a core consisting of a core core inserted into the core insertion hollow portion of the bobbin and an outer core surrounding the outside of the bobbin, Two or more bobbins each having a plate-shaped terminal board formed so as not to protrude on the side surface on both sides; A heavy core which can be closely inserted into the core insertion hollow portion according to the number of core insertion hollow portions formed in the two or more bobbins; The core consists of a combination of "E" type or "UI" type cores consisting of an external core having a terminal board inserting portion formed in the same size as the front portion of the terminal board, and the core completely surrounds the body of the bobbin and the bottom of the core is A transformer module, characterized in that configured to be positioned at the same position as the bottom of the bobbin. According to claim 7, Formed support grooves of a predetermined depth and size on one side of the both sides of the bobbin of the bobbin and a predetermined size heavy core support that can be detachably coupled to the support grooves to support and fix the core core Transformer module comprising a. The core of claim 7, wherein the core further comprises a middle portion of an external core having a predetermined length between the cores so that the core can be positioned between the bobbin and the bobbin, thereby increasing the cross-sectional area of the core. Transformer module characterized by the above. 8. The transformer module according to claim 7, wherein the external core intermediate portion is integral with or independent from the core. 8. The transformer module of claim 7, wherein the middle portion of the outer core is equal to the length of the outer core side of the core.