JP2014216359A - Transformer - Google Patents
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- JP2014216359A JP2014216359A JP2013089935A JP2013089935A JP2014216359A JP 2014216359 A JP2014216359 A JP 2014216359A JP 2013089935 A JP2013089935 A JP 2013089935A JP 2013089935 A JP2013089935 A JP 2013089935A JP 2014216359 A JP2014216359 A JP 2014216359A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
- H01F41/12—Insulating of windings
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F5/00—Coils
- H01F5/02—Coils wound on non-magnetic supports, e.g. formers
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Abstract
Description
この発明は、コイルならびに複数の巻回部とコイルの巻線を渡らせるためのスリットが設けられた鍔とを含むトランス用ボビンを備えるトランスに関する。 The present invention relates to a transformer including a transformer bobbin including a coil and a plurality of winding portions and a hook provided with a slit for passing the winding of the coil.
特許文献１に示されるトランスのトランス用ボビン１ａにおいて、図８に示すように、そのトランス用ボビン１ａの鍔３にはスリット５が設けられている。そして、コイル６を構成する巻線は、隣接する一方の巻回部４から、鍔３のスリット５（渡り部６ａ）を通って、隣接する他方の巻回部４に巻回されている。 In the transformer bobbin 1a of the transformer shown in Patent Document 1, as shown in FIG. 8, a slit 5 is provided in the flange 3 of the transformer bobbin 1a. And the coil | winding which comprises the coil 6 is wound by the other adjacent winding part 4 from the adjacent one winding part 4 through the slit 5 (crossing part 6a) of the collar 3. FIG.
ところで、コイルは巻数が増えるごとに電圧が上昇する。したがって、たとえば、巻き始め側の部分（始点側巻線）と巻き終わり側の部分（終点側巻線）とが接触することは、コイルの耐圧をオーバーするおそれがあるため、このようなことは未然に防いでおく必要がある。通常の方法により巻回部にコイルを巻いていくと、始点側巻線は巻回部の下部側（底部側）に巻回されるため、終点側巻線とは接触せず、上述したような耐圧がオーバーする問題は発生しない。 By the way, the voltage of the coil increases as the number of turns increases. Therefore, for example, contact between the winding start side portion (start point side winding) and the winding end side portion (end point side winding) may exceed the coil withstand voltage. It is necessary to prevent it beforehand. When the coil is wound around the winding part by a normal method, the starting point side winding is wound on the lower side (bottom side) of the winding part, so it does not contact the end point side winding, as described above. There is no problem of excessive breakdown voltage.
しかしながら、特許文献１に記載されるトランス用ボビン１ａの構成のように、巻回部４（渡り前巻回部）からスリット５を介して隣接する巻回部４（渡り後巻回部）にコイル６を渡らせる場合、この渡り線を確実に次の巻回部４（渡り後巻回部）の下部側に渡さなければ、その渡り線が、巻回部上部側近くのコイル６と接触するため、耐圧オーバーとなることから不良を起こすおそれがある問題があった。特にこのような問題は、コイル６に用いる巻腺が、線径の太い太線である場合やリッツ線である場合に起こり易かった。
つまり、コイル６が巻き乱れた場合や巻線状態のばらつき等によっては、特許文献１に記載されるトランス用ボビン１ａの構成では、十分に耐圧を確保できなくなるおそれがあった。
However, like the configuration of the transformer bobbin 1a described in Patent Document 1, from the winding part 4 (the pre-crossover winding part) to the adjacent winding part 4 (the post-crossing winding part) via the slit 5 When the coil 6 is crossed, if this crossover wire is not surely passed to the lower side of the next winding part 4 (winding part after the crossing), the crossover wire contacts the coil 6 near the upper part of the winding part. For this reason, there is a problem in that the breakdown voltage may be exceeded due to the breakdown voltage. Such a problem is particularly likely to occur when the winding gland used for the coil 6 is a thick wire with a large wire diameter or a litz wire.
In other words, the transformer bobbin 1a described in Patent Document 1 may not be able to secure a sufficient withstand voltage depending on the winding of the coil 6 or variations in the winding state.
それゆえに、この発明の主たる目的は、渡り前巻回部から渡り後巻回部にコイルを渡す際において、耐圧確保をより確実にしてコイルの巻線を渡すことを可能とするトランスを提供することである。 SUMMARY OF THE INVENTION Therefore, a main object of the present invention is to provide a transformer that can pass a coil winding while ensuring a withstand voltage more reliably when passing a coil from a front winding part to a rear winding part. That is.
この発明にかかるトランスは、コイルとトランス用ボビンとを備えるトランスであって、トランス用ボビンが、少なくとも、第１の巻回部と第２の巻回部とを有し、第１の巻回部と第２の巻回部との間に、第１のスリットが設けられた第１の鍔が形成され、第１の巻回部における第１のスリット付近の領域よりも、第２の巻回部における第１のスリット付近の領域の方が、径方向外向きに厚く形成されることを特徴とする、トランスである。
また、この発明にかかるトランスは、トランス用ボビンが、さらに第３の巻回部を有し、第２の巻回部と第３の巻回部との間に、第２のスリットが設けられた第２の鍔が形成されていても良い。
さらに、この発明にかかるトランスは、第２の巻回部における第２のスリット付近の領域と、第３の巻回部における第２のスリット付近の領域とが実質的に、径方向に同等の高さであることが好ましい。
また、この発明にかかるトランスは、第２の巻回部において、第１の巻回部側に近い領域から第３の巻回部側に近い領域に向かうにつれて、径方向に低くなるスロープが形成されていることが好ましい。
さらに、この発明にかかるトランスは、第２の巻回部において、第１のスリット付近の領域から、第２のスリット付近の領域に向かうにつれて、円周方向に低くなるスロープが形成されていることが好ましい。
また、この発明にかかるトランスは、第２の巻回部の幅が第１の巻回部の幅よりも小さいことが好ましい。
さらにまた、この発明にかかるトランスは、第２の巻回部の幅がコイルの径の大きさと実質的に同等であることが好ましい。
さらに、この発明にかかるトランスは、第１のスリットが第２のスリットに対して平面視略反対側に形成されていることが好ましい。
The transformer according to the present invention is a transformer including a coil and a transformer bobbin. The transformer bobbin includes at least a first winding part and a second winding part, and the first winding part is provided. A first collar provided with a first slit is formed between the first winding portion and the second winding portion, and the second winding is more than the region near the first slit in the first winding portion. In the transformer, the region in the vicinity of the first slit in the turning portion is formed thicker radially outward.
In the transformer according to the present invention, the transformer bobbin further includes a third winding portion, and a second slit is provided between the second winding portion and the third winding portion. A second ridge may also be formed.
Furthermore, in the transformer according to the present invention, the region near the second slit in the second winding part and the region near the second slit in the third winding part are substantially equal in the radial direction. It is preferable that the height.
Further, in the transformer according to the present invention, in the second winding portion, a slope that decreases in the radial direction is formed from the region close to the first winding portion side toward the region close to the third winding portion side. It is preferable that
Furthermore, in the transformer according to the present invention, a slope that decreases in the circumferential direction from the region near the first slit toward the region near the second slit is formed in the second winding portion. Is preferred.
In the transformer according to the present invention, the width of the second winding part is preferably smaller than the width of the first winding part.
Furthermore, in the transformer according to the present invention, it is preferable that the width of the second winding portion is substantially equal to the size of the coil diameter.
Furthermore, in the transformer according to the present invention, it is preferable that the first slit is formed on the substantially opposite side to the second slit in plan view.
この発明にかかるトランスによれば、第１の巻回部における第１のスリット付近の領域よりも、第２の巻回部における第１のスリット付近の領域の方が、径方向外向きに厚く形成されることから、第１の巻回部におけるコイルの表面側からコイルの巻線を渡しても、径方向外向きに厚く形成された第２の巻回部の底部に巻線が渡されるので、第１の巻回部における巻き始め側部分と巻き終わり側の部分（第１の巻回部から第２の巻回部に渡されるコイルの部分）の接触を防止でき、容易に耐圧を確保することができる。
この発明にかかるトランスでは、トランス用ボビンが、さらに第３の巻回部を有し、第２の巻回部と第３の巻回部との間に第２の鍔が形成されて、第２の巻回部における第２のスリット付近の領域と、第３の巻回部における第２のスリット付近の領域とが実質的に、径方向に同等の高さで形成されると、第２の巻回部におけるコイルと第３の巻回部における巻き終わり側（第３の巻回部においてコイルが積み重なった側）との接触を防止することができ、第２の巻回部２２と第３の巻回部２４との間の耐圧を確保することができる。
また、この発明にかかるトランスでは、第２の巻回部において、第１の巻回部側に近い領域から第３の巻回部側に近い領域に向かうにつれて、径方向に低くなるスロープが形成されたり、第２の巻回部において、第１のスリット付近の領域から、第２のスリット付近の領域に向かうにつれて、円周方向に低くなるスロープが形成されると、第２の巻回部におけるコイルの円周方向の高さ変化を緩やかにすることができ、コイルの巻線へのストレスを低減することができる。
また、この発明にかかるトランスでは、第２の巻回部の幅を、第１の巻回部の幅よりも小さくし、加えて、第２の巻回部の幅を、コイルの径の大きさと実質的に同等に形成すると、第２の巻回部の幅を最小限にでき、最小の厚みで、第１の巻回部から第２の巻回部を介して第３の巻回部にコイルを渡すことができることから、トランスの小型化を可能にする。
また、この発明にかかるトランスでは、第１のスリットは、第２のスリットに対して平面視略反対側に形成されていると、第１のスリットから第２のスリットへコイルを無理なく渡らせるための距離を確保することができる。
According to the transformer of the present invention, the region near the first slit in the second winding portion is thicker radially outward than the region near the first slit in the first winding portion. Therefore, even if the coil winding is passed from the surface side of the coil in the first winding part, the winding is passed to the bottom part of the second winding part that is formed thick radially outward. Therefore, contact between the winding start side portion and the winding end side portion (the coil portion passed from the first winding portion to the second winding portion) in the first winding portion can be prevented, and the withstand voltage can be easily reduced. Can be secured.
In the transformer according to the present invention, the transformer bobbin further includes a third winding part, and a second hook is formed between the second winding part and the third winding part, When the region near the second slit in the second winding portion and the region near the second slit in the third winding portion are formed at substantially the same height in the radial direction, the second Contact between the coil in the winding portion and the winding end side in the third winding portion (the side where the coils are stacked in the third winding portion) can be prevented, and the second winding portion 22 and the second winding portion can be prevented. The withstand voltage between the three winding portions 24 can be ensured.
In the transformer according to the present invention, a slope that decreases in the radial direction is formed in the second winding portion from the region close to the first winding portion side toward the region close to the third winding portion side. In the second winding part, when a slope that decreases in the circumferential direction from the area near the first slit toward the area near the second slit is formed, the second winding part The change in the height of the coil in the circumferential direction can be moderated, and the stress on the coil winding can be reduced.
In the transformer according to the present invention, the width of the second winding portion is made smaller than the width of the first winding portion, and in addition, the width of the second winding portion is made larger than the coil diameter. If formed substantially the same as the second winding portion, the width of the second winding portion can be minimized, and the third winding portion can be formed from the first winding portion through the second winding portion with the minimum thickness. Since the coil can be passed to the transformer, the transformer can be miniaturized.
In the transformer according to the present invention, if the first slit is formed on the substantially opposite side to the second slit in plan view, the coil can be easily passed from the first slit to the second slit. The distance for this can be ensured.
この発明によれば、渡り前巻回部から渡り後巻回部にコイルを渡す際において、耐圧確保をより確実にしてコイルの巻線を渡すことを可能とするトランスが得られる。 According to this invention, when passing the coil from the pre-crossover winding part to the post-winding part, a transformer is obtained that can pass the winding of the coil while ensuring the withstand voltage.
この発明の上述の目的、その他の目的、特徴および利点は、図面を参照して行う以下の発明を実施するための形態の説明から一層明らかとなろう。 The above-described object, other objects, features, and advantages of the present invention will become more apparent from the following description of embodiments for carrying out the invention with reference to the drawings.
図１Ａは、この発明にかかるトランスの第１の実施の形態の一例を示す斜視図であり、（ａ）は正面方向からの斜視図であり、（ｂ）は背面方向からの斜視図である。図１Ｂは、この発明にかかるトランスの第１の実施の形態の一例を示す斜視図であり、（ａ）は正面方向からの斜視図であって、巻線が第１のスリットを介して第１の巻回部から第２の巻回部へ渡る状態を示し、（ｂ）は背面方向からの斜視図であって、巻線が第２のスリットを介して第２の巻回部から第３の巻回部へ渡る状態を示す。また、図２は、図１Ａに示すトランスにおけるトランス用ボビンの一部を断面した平面断面図であり、図３は、図１Ａに示すトランスの一部拡大断面図である。図１Ａにおいて示されるトランス１０は、コイル（図示せず）とトランス用ボビン１４とを備える。 1A is a perspective view showing an example of a first embodiment of a transformer according to the present invention, FIG. 1A is a perspective view from the front direction, and FIG. 1B is a perspective view from the back side. . FIG. 1B is a perspective view showing an example of a first embodiment of a transformer according to the present invention, in which FIG. 1A is a perspective view from the front direction, and the winding passes through the first slit. 1 shows a state extending from the first winding part to the second winding part, (b) is a perspective view from the back direction, in which the winding passes through the second slit from the second winding part. The state over 3 winding parts is shown. 2 is a cross-sectional plan view of a part of the transformer bobbin in the transformer shown in FIG. 1A. FIG. 3 is a partially enlarged cross-sectional view of the transformer shown in FIG. 1A. A transformer 10 shown in FIG. 1A includes a coil (not shown) and a transformer bobbin 14.
コイルは、トランス用ボビン１４に対して巻線１２が巻回されて設けられる。コイルに使用する巻線１２の材料が、リッツ線または単線である場合には、巻線１２の径が０．５ｍｍ以上であることが好ましい。 The coil is provided by winding a winding 12 around a transformer bobbin 14. When the material of the coil | winding 12 used for a coil is a litz wire or a single wire, it is preferable that the diameter of the coil | winding 12 is 0.5 mm or more.
トランス用ボビン１４は、複数の巻回部と、スリットが設けられた複数の鍔とを含む。以下、詳細に説明する。 The transformer bobbin 14 includes a plurality of winding portions and a plurality of scissors provided with slits. Details will be described below.
トランス用ボビン１４は、複数の巻回部として、第１の巻回部２０、第２の巻回部２２および第３の巻回部２４を有する。第１の巻回部２０、第２の巻回部２２および第３の巻回部２４は、たとえば、巻芯が筒状に貫通された円筒状に形成されており、各巻回部には、巻線１２が所定のターン数巻回されてコイルを形成している。 The transformer bobbin 14 includes a first winding part 20, a second winding part 22, and a third winding part 24 as a plurality of winding parts. The 1st winding part 20, the 2nd winding part 22, and the 3rd winding part 24 are formed in the cylindrical shape by which the core was penetrated cylindrically, for example, and in each winding part, The winding 12 is wound a predetermined number of turns to form a coil.
なお、第２の巻回部２２の幅は、コイルの巻線１２の径の大きさと実質的に同等であることが好ましい。 In addition, it is preferable that the width | variety of the 2nd winding part 22 is substantially equivalent to the magnitude | size of the diameter of the coil | winding 12 of a coil.
また、トランス用ボビン１４は、複数の鍔として、第１の鍔３０および第２の鍔３２を有する。第１の鍔３０は、第１の巻回部２０と第２の巻回部２２との間に形成され、第２の鍔３２は、第２の巻回部２２と第３の巻回部２４との間に形成される。そして、第１の巻回部２０において、第１の鍔３０の形成される側とは反対側に一方端鍔３４が形成され、その一方端鍔３４の下部側には、端子配置部３８ａが形成される。また、第３の巻回部２４において、第２の鍔３２の形成される側とは反対側に他方端鍔３６が形成され、その他方端鍔３６の上部側には、端子配置部３８ｂが形成される。端子配置部３８ｂには、端子（図示せず）が配置され、コイルの巻線１２が絡められる。第１の鍔３０は第１の巻回部２０と第２の巻回部２２との仕切り板として設けられる。第２の鍔３２は、第２の巻回部２２と第３の巻回部２４との仕切り板として設けられる。 The transformer bobbin 14 includes a first rod 30 and a second rod 32 as a plurality of rods. The first collar 30 is formed between the first winding part 20 and the second winding part 22, and the second collar 32 is composed of the second winding part 22 and the third winding part. 24. And in the 1st winding part 20, the one end collar 34 is formed in the opposite side to the side in which the 1st collar 30 is formed, and the terminal arrangement | positioning part 38a is formed in the lower part side of the one end collar 34. It is formed. Further, in the third winding portion 24, the other end rod 36 is formed on the side opposite to the side where the second rod 32 is formed, and a terminal arrangement portion 38b is formed on the upper side of the other end rod 36. The A terminal (not shown) is arranged in the terminal arrangement portion 38b, and the winding 12 of the coil is entangled. The first collar 30 is provided as a partition plate between the first winding part 20 and the second winding part 22. The second collar 32 is provided as a partition plate between the second winding part 22 and the third winding part 24.
また、第１の鍔３０には、仕切り板の開口部分である第１のスリット３０ａが形成され、第２の鍔３２には、仕切り板の開口部分である第２のスリット３２ａが形成される。第１のスリット３０ａは、第１の巻回部２０に巻回されたコイルから第２の巻回部２２にコイルの巻線１２を渡らせるために設けられ、第２のスリットは、第２の巻回部２２に巻回されたコイルから第３の巻回部２４にコイルの巻線１２を渡らせるために設けられる。また、図２に示すように、第１のスリット３０ａは、第１の鍔３０の外周縁側が開くような略コ字形状に形成され、第２のスリット３２ａは、第２の鍔３２の外周縁側が開くような略コ字形状に形成される。なお、第１のスリット３０ａは、第２のスリット３２ａに対して、巻芯を中心に平面視反対側に形成されるのが好ましい。 Further, the first ridge 30 is formed with a first slit 30a that is an opening portion of the partition plate, and the second ridge 32 is formed with a second slit 32a that is an opening portion of the partition plate. . The first slit 30a is provided to cross the coil winding 12 from the coil wound around the first winding part 20 to the second winding part 22, and the second slit is the second slit. It is provided for passing the winding 12 of the coil from the coil wound around the winding portion 22 to the third winding portion 24. Further, as shown in FIG. 2, the first slit 30 a is formed in a substantially U shape so that the outer peripheral edge side of the first collar 30 is opened, and the second slit 32 a is the outer periphery of the second collar 32. It is formed in a substantially U shape so that the edge side opens. In addition, it is preferable that the 1st slit 30a is formed in the planar view opposite side centering on a core with respect to the 2nd slit 32a.
図３に示すように、第１の巻回部２０の底部２０ａ、第２の巻回部２２の底部２２ａおよび第３の巻回部２４の底部２４ａは、トランス用ボビン１４の巻芯部分の外周面に位置する。
また、第２の巻回部２２において、第１の巻回部２０側に近い領域から第３の巻回部２４側に近い領域に向かうにつれて、径方向に低くなるスロープ部４０が形成されている。換言すると、まず、図３に示すように、スロープ部４０の上端４０ｂが第１の鍔３０に接している。そして、そのスロープ部４０の上端４０ｂから第２の巻回部２２の底部２２ａの略中間部に向かって上に凸方向にやや湾曲するように傾斜して延びており、スロープ部４０の下端４０ａがその第２の巻回部２２の底部２２ａにおける略中間部に接している。
As shown in FIG. 3, the bottom portion 20 a of the first winding portion 20, the bottom portion 22 a of the second winding portion 22, and the bottom portion 24 a of the third winding portion 24 are the core portions of the transformer bobbin 14. Located on the outer peripheral surface.
Further, in the second winding portion 22, a slope portion 40 is formed that decreases in the radial direction from the region close to the first winding portion 20 side toward the region close to the third winding portion 24 side. Yes. In other words, first, as shown in FIG. 3, the upper end 40 b of the slope portion 40 is in contact with the first rod 30. Then, the slope portion 40 extends from the upper end 40b of the slope portion 40 so as to be slightly curved in a convex direction upward toward the substantially middle portion of the bottom portion 22a of the second winding portion 22, and the lower end 40a of the slope portion 40. Is in contact with the substantially middle portion of the bottom portion 22a of the second winding portion 22.
つまり、図３に示すように、スロープ部４０が形成されることによって、第１の巻回部２０における第１の鍔３０の第１のスリット３０ａ付近の領域よりも、第２の巻回部２２における第１の鍔３０の第１のスリット３０ａ付近の領域の方が、径方向外向きに厚く形成される。換言すると、第１の巻回部２０の底部２０ａにおける第１の鍔３０の第１のスリット３０ａ付近の領域よりも、第２の巻回部２２のスロープ部４０の上端４０ｂにおける第１のスリット３０ａ付近の領域の方が上底になるように形成される。したがって、第１の巻回部２０の底部２０ａからコイルの巻線１２を巻いていき、巻線１２が積み重なって、第１の巻回部２０の表面側に巻回され、さらに、図１Ｂ（ａ）に示すように、第１の巻回部２０の表面側まで巻回されたコイルの巻線１２は、第１のスリット３０ａを介して第２の巻回部２２に渡され、第２の巻回部２２においてスロープ部４０を介して底部２２ａに渡される。 That is, as shown in FIG. 3, by forming the slope portion 40, the second winding portion is more than the region near the first slit 30 a of the first collar 30 in the first winding portion 20. The region near the first slit 30a of the first ridge 30 at 22 is formed thicker radially outward. In other words, the first slit at the upper end 40b of the slope portion 40 of the second winding portion 22 is more than the region near the first slit 30a of the first flange 30 at the bottom portion 20a of the first winding portion 20. It is formed so that the region near 30a is the upper base. Therefore, the winding 12 of the coil is wound from the bottom 20a of the first winding part 20, and the windings 12 are stacked and wound on the surface side of the first winding part 20. Further, FIG. As shown to a), the coil | winding 12 of the coil wound to the surface side of the 1st winding part 20 is passed to the 2nd winding part 22 via the 1st slit 30a, and 2nd Is passed to the bottom portion 22a via the slope portion 40.
また、図１Ａ（ｂ）に示すように、第２の鍔３２には第２のスリット３２ａが設けられており、第２の巻回部２２における第２の鍔３２の第２のスリット３２ａ付近の領域と、第３の巻回部２４における第２の鍔３２の第２のスリット３２ａ付近の領域とが実質的に、径方向に同等の高さに形成される。換言すると、第２の巻回部２２の底部２２ａにおける第２の鍔の第２のスリット３２ａ付近の領域と、第３の巻回部２４における底部２４ａにおける第２の鍔３２の第２のスリット３２ａ付近の領域とが実質的に、径方向に同等の高さに形成される。したがって、第１のスリット３０ａを介して渡された第２の巻回部２２に巻回されたコイルの巻線１２は、図１Ｂ（ｂ）に示すように、第２の鍔３２の第２のスリット３２ａを介して第３の巻回部２４の底部２４ａに渡される。特に、コイルに使用する巻線１２の材料としてリッツ線や太線を使用しても耐圧を確保しつつ安全にコイルの巻線１２を渡すことができる。 Further, as shown in FIG. 1A (b), the second collar 32 is provided with a second slit 32a, and the second winding 32 has a second slit 32a and the vicinity of the second slit 32a. And the region in the third winding portion 24 near the second slit 32a of the second collar 32 are formed at substantially the same height in the radial direction. In other words, the area near the second slit 32a of the second ridge at the bottom 22a of the second winding part 22, and the second slit of the second ridge 32 at the bottom 24a of the third winding part 24 The region in the vicinity of 32a is formed at substantially the same height in the radial direction. Therefore, the winding 12 of the coil wound around the second winding portion 22 passed through the first slit 30a is the second winding 32 of the second collar 32 as shown in FIG. 1B (b). Is passed to the bottom 24a of the third winding part 24 through the slit 32a. In particular, even if a litz wire or a thick wire is used as the material of the winding 12 used for the coil, the winding 12 of the coil can be safely passed while ensuring a withstand voltage.
本実施の形態にかかるトランス１０によれば、第１の巻回部２０における第１の鍔３０の第１のスリット３０ａ付近の領域よりも、第２の巻回部２２における第１の鍔３０の第１のスリット３０ａ付近の領域の方が、径方向外向きに厚く形成されるので、第１の巻回部２０におけるコイルの表面側からコイルの巻線１２を渡しても、第２の巻回部２２においてスロープ部４０を介して、径方向外向きに厚く形成された部分から底部２２ａに渡されるので、第１の巻回部２０における巻き始め側部分と巻き終わり側の部分（第１の巻回部２０から第２の巻回部２２に渡されるコイルの部分）の接触を防止でき、容易に耐圧を確保することができる。 According to the transformer 10 according to the present embodiment, the first rod 30 in the second winding portion 22 is more than the region near the first slit 30a of the first rod 30 in the first winding portion 20. Since the region in the vicinity of the first slit 30a is formed thicker radially outward, even if the coil winding 12 is passed from the coil surface side in the first winding part 20, the second winding Since the winding portion 22 is passed through the slope portion 40 from the portion formed thick radially outward to the bottom portion 22a, the winding start side portion and the winding end side portion (the first winding portion 20) The contact of the coil portion passed from the first winding portion 20 to the second winding portion 22) can be prevented, and the breakdown voltage can be easily secured.
また、本実施の形態にかかるトランス１０によれば、第２の巻回部２２の底部２２ａと第３の巻回部２４の底部２４ａとが実質的に、径方向に同等の位置に形成されるので、第２の巻回部２２におけるコイルの巻線１２と第３の巻回部２４における巻き終わり側（第３の巻回部においてコイルが積み重なった側）との接触を防止することができ、第２の巻回部２２と第３の巻回部２４との間の耐圧をより確保することができる。 Further, according to the transformer 10 according to the present embodiment, the bottom portion 22a of the second winding portion 22 and the bottom portion 24a of the third winding portion 24 are formed at substantially the same position in the radial direction. Therefore, it is possible to prevent contact between the coil winding 12 in the second winding part 22 and the winding end side (the side where the coils are stacked in the third winding part) in the third winding part 24. In addition, the withstand voltage between the second winding part 22 and the third winding part 24 can be further ensured.
さらに、本実施の形態にかかるトランス１０によれば、第１の巻回部２０と第３の巻回部２４との間に、渡り専用の第２の巻回部２２を設けているので、コイルが太線やリッツ線等であっても、より確実に耐圧を確保することができる。例えば、コイルとしてリッツ線を用いた場合は線がばらけることがある。このような巻き乱れにより、耐圧オーバーとなるコイルと接触してしまうリスクを有するが、渡り専用の第２の巻回部２２を設けることで、このような状態を回避することができ、確実に耐圧を確保することができる。 Furthermore, according to the transformer 10 according to the present embodiment, since the second winding part 22 dedicated to the transition is provided between the first winding part 20 and the third winding part 24, Even if the coil is a thick wire, a litz wire, or the like, the withstand voltage can be more reliably ensured. For example, when a litz wire is used as the coil, the wire may be scattered. Although there is a risk of contact with a coil that is over pressure-resistant due to such turbulence, such a state can be avoided and reliably provided by providing the second winding part 22 dedicated for crossover. A breakdown voltage can be secured.
また、本実施の形態にかかるトランス１０によれば、トランス用ボビン１４は金型による一体成型されるところ、トランス１０の正面方向および背面方向に金型が抜きやすい形状となっていることから、トランス用ボビン１４の製造が容易であるため、製造容易なトランス１０を得ることができる。 Further, according to the transformer 10 according to the present embodiment, the transformer bobbin 14 is integrally formed by a mold, and since the mold can be easily removed in the front direction and the back direction of the transformer 10, Since the transformer bobbin 14 can be easily manufactured, the easily manufactured transformer 10 can be obtained.
さらに、本実施の形態にかかるトランス１０によれば、第１の鍔３０に形成される第１のスリット３０ａと第２の鍔３２に形成される第２のスリット３２ａとが、巻芯を中心に平面視反対側に形成されるので、第１のスリット３０ａから第２のスリット３２ｂへコイルの巻線１２を無理なく渡らせるための距離を確保することができる。 Furthermore, according to the transformer 10 according to the present embodiment, the first slit 30a formed in the first flange 30 and the second slit 32a formed in the second flange 32 are centered on the winding core. Therefore, it is possible to secure a distance for allowing the winding 12 of the coil to be easily passed from the first slit 30a to the second slit 32b.
次に、この発明にかかるトランスの第２の実施の形態について説明する。図４Ａは、この発明にかかるトランスの第２の実施の形態の一例を示す斜視図であり、（ａ）は正面方向からの斜視図であり、（ｂ）は背面方向からの斜視図である。図４Ｂは、この発明にかかるトランスの第２の実施の形態の一例を示す斜視図であり、（ａ）は正面方向からの斜視図であって、巻線が第１のスリットを介して第１の巻回部から第２の巻回部へ渡る状態を示し、（ｂ）は背面方向からの斜視図であって、巻線が第２のスリットを介して第２の巻回部から第３の巻回部へ渡る状態を示す。また、図５は、図４Ａに示すトランスの第１のスリットの付近の領域における一部拡大断面図であり、図６は、図４Ａに示すトランスにおけるトランス用ボビンの一部を断面した平面断面図である。また、図７は、図４Ａに示すトランスの第２のスリットの付近の領域における一部拡大断面図である。なお、この実施の形態にかかるトランス１１０において、図１Ａないし図３に記載のトランス１０と同一の部分には同一の符号を付して説明を省略する。 Next, a second embodiment of the transformer according to the present invention will be described. 4A is a perspective view showing an example of a second embodiment of a transformer according to the present invention, FIG. 4A is a perspective view from the front direction, and FIG. 4B is a perspective view from the back direction. . FIG. 4B is a perspective view showing an example of the second embodiment of the transformer according to the present invention, in which FIG. 4A is a perspective view from the front direction, and the winding passes through the first slit. 1 shows a state extending from the first winding part to the second winding part, (b) is a perspective view from the back direction, in which the winding passes through the second slit from the second winding part. The state over 3 winding parts is shown. 5 is a partially enlarged cross-sectional view of a region in the vicinity of the first slit of the transformer shown in FIG. 4A. FIG. 6 is a plan cross-sectional view of a part of the transformer bobbin in the transformer shown in FIG. 4A. FIG. FIG. 7 is a partially enlarged cross-sectional view of a region in the vicinity of the second slit of the transformer shown in FIG. 4A. In the transformer 110 according to this embodiment, the same parts as those of the transformer 10 shown in FIGS.
図４Ａに示すように、第２の実施の形態にかかるトランス１１０は、コイル（図示せず）とトランス用ボビン１１４とを備える。コイルは、第１の実施の形態にかかるトランス１０と同様のコイルが用いられる。トランス用ボビン１１４は、複数の巻回部として、第１の巻回部２０、第２の巻回部２２および第３の巻回部２４を有する。第１の巻回部２０、第２の巻回部２２および第３の巻回部２４には、コイルの巻線１２が所定のターン数巻回されている。 As shown in FIG. 4A, the transformer 110 according to the second embodiment includes a coil (not shown) and a transformer bobbin 114. As the coil, the same coil as that of the transformer 10 according to the first embodiment is used. The transformer bobbin 114 includes a first winding part 20, a second winding part 22, and a third winding part 24 as a plurality of winding parts. The first winding part 20, the second winding part 22, and the third winding part 24 are wound with the coil winding 12 by a predetermined number of turns.
そして、図５に示すように、第１の巻回部２０における第１の鍔３０の第１のスリット３０ａ付近の領域よりも、第２の巻回部２２における第１の鍔３０の第１のスリット３０ａ付近の領域の方が、径方向外向きに厚く形成される。換言すると、図５に示すように、第１の巻回部２０の底部２０ａにおける第１の鍔３０の第１のスリット３０ａ付近の領域よりも、第２の巻回部２２の底部２２ａにおける第１のスリット３０ａ付近の領域の方が、径方向の厚みが厚くなるように形成される。したがって、第１の巻回部２０の底部２０ａからコイルの巻線１２を巻いていき、その巻線１２が積み重なって、第１の巻回部２０の表面側に巻回され、第１の巻回部２０の表面側まで巻回された巻線１２は、図４Ｂ（ａ）に示すように、第１のスリット３０ａを介して第２の巻回部２２に渡される。 Then, as shown in FIG. 5, the first of the first rod 30 in the second winding portion 22 is more than the region in the first winding portion 20 near the first slit 30 a of the first rod 30. The region near the slit 30a is formed thicker radially outward. In other words, as shown in FIG. 5, the second winding portion 22 has a bottom portion 22 a in the bottom portion 22 a rather than a region near the first slit 30 a of the first flange 30 in the bottom portion 20 a of the first winding portion 20. The region in the vicinity of one slit 30a is formed so that the radial thickness is thicker. Therefore, the winding 12 of the coil is wound from the bottom 20a of the first winding part 20, and the windings 12 are stacked and wound on the surface side of the first winding part 20, so that the first winding As shown in FIG. 4B (a), the winding 12 wound to the surface side of the turning part 20 is passed to the second winding part 22 through the first slit 30a.
また、図６に示すように、第２の巻回部２２において、第１の鍔３０の第１のスリット３０ａ付近の領域から、第２の鍔３２の第２のスリット３２ａ付近の領域に向かうにつれて、円周方向に低くなるスロープ部１４０が形成されている。換言すると、第１の鍔３０の第１のスリット３０ａ付近の領域から平面視で時計と反対周りに第２の鍔３２の第２のスリット３２ａ付近の領域に向かうにつれて、ホビン１４の巻芯部分の厚み（径方向の厚み）が薄くなるようなスロープ部１４０が形成されている。 Further, as shown in FIG. 6, in the second winding portion 22, the region from the vicinity of the first slit 30 a of the first rod 30 goes to the region near the second slit 32 a of the second rod 32. Accordingly, a slope portion 140 that is lowered in the circumferential direction is formed. In other words, the core portion of the hobbin 14 moves from the region near the first slit 30a of the first rod 30 toward the region near the second slit 32a of the second rod 32 in the counterclockwise direction in plan view. The slope portion 140 is formed so that the thickness (the thickness in the radial direction) is reduced.
また、図７に示すように、第２の巻回部２２における第２の鍔３２の第２のスリット３２ａ付近の領域と、第３の巻回部２４における第２の鍔３２の第２のスリット３２ａ付近の領域とが実質的に、径方向に同等の高さに形成される。換言すると、第２の巻回部２２の底部２２ａにおける第２の鍔の第２のスリット３２ａ付近の領域と、第３の巻回部２４における底部２４ａにおける第２の鍔３２の第２のスリット３２ａ付近の領域とが実質的に、径方向に同等の高さに形成される。したがって、第１のスリット３０ａを介して渡された第２の巻回部２２に巻回されたコイルの巻線１２は、図４Ｂ（ｂ）に示すように、第２の鍔３２の第２のスリット３２ａを介して第３の巻回部２４の底部２４ａに渡される。 In addition, as shown in FIG. 7, the region around the second slit 32 a of the second collar 32 in the second winding portion 22 and the second of the second collar 32 in the third winding portion 24. The region in the vicinity of the slit 32a is substantially formed at the same height in the radial direction. In other words, the area near the second slit 32a of the second ridge at the bottom 22a of the second winding part 22, and the second slit of the second ridge 32 at the bottom 24a of the third winding part 24 The region in the vicinity of 32a is formed at substantially the same height in the radial direction. Therefore, the winding 12 of the coil wound around the second winding portion 22 passed through the first slit 30a is the second winding 32 of the second collar 32 as shown in FIG. 4B (b). Is passed to the bottom 24a of the third winding part 24 through the slit 32a.
このトランス１１０では、上述のトランス１０と同様の効果を奏するとともに、次の効果も奏する。
すなわち、第２の実施の形態にかかるトランス１１０において、スロープ部１４０は、円周方向に向かうにつれて徐々に緩やかになっていく構造により、コイルが引っ張られて部分的に細くなったりして性能が劣化する等のおそれを低減することができる。
The transformer 110 has the same effects as the above-described transformer 10 and also has the following effects.
In other words, in the transformer 110 according to the second embodiment, the slope portion 140 has a structure that gradually becomes gentle toward the circumferential direction, so that the coil is pulled and becomes partially thinned so that the performance is improved. The risk of deterioration or the like can be reduced.
この発明にかかるトランスは、コイルならびに複数の巻回部とコイルを渡らせるためのスリットが設けられた鍔とを含む構造を有するトランス用ボビンを備えるトランスに対して好適に用いられる。 The transformer according to the present invention is suitably used for a transformer including a transformer bobbin having a structure including a coil, a plurality of winding portions, and a hook provided with a slit for passing the coil.
１０、１１０ トランス
１２ 巻線
１４、１１４ トランス用ボビン
２０ 第１の巻回部
２２ 第２の巻回部
２４ 第３の巻回部
３０ 第１の鍔
３０ａ 第１のスリット
３２ 第２の鍔
３２ａ 第２のスリット
３４ 一方端鍔
３６ 他方端鍔
３８ａ、３８ｂ 端子配置部
４０、１４０ スロープ部
10, 110 Transformer 12 Winding 14, 114 Transformer bobbin 20 First winding portion 22 Second winding portion 24 Third winding portion 30 First rod 30a First slit 32 Second rod 32a Second slit 34 One end rod 36 Other end rod 38a, 38b Terminal arrangement portion 40, 140 Slope portion
Claims (8)
前記トランス用ボビンは、
少なくとも、第１の巻回部と第２の巻回部とを有し、
前記第１の巻回部と前記第２の巻回部との間に、第１のスリットが設けられた第１の鍔が形成され、
前記第１の巻回部における前記第１のスリット付近の領域よりも、前記第２の巻回部における前記第１のスリット付近の領域の方が、径方向外向きに厚く形成されることを特徴とする、トランス。 A transformer comprising a coil and a transformer bobbin,
The transformer bobbin
Having at least a first winding part and a second winding part,
Between the first winding part and the second winding part, a first collar provided with a first slit is formed,
The region near the first slit in the second winding portion is formed to be thicker radially outward than the region near the first slit in the first winding portion. Characteristic transformer.
さらに第３の巻回部を有し、
前記第２の巻回部と前記第３の巻回部との間に、第２のスリットが設けられた第２の鍔が形成される、請求項１に記載のトランス。 The transformer bobbin
Furthermore, it has a third winding part,
2. The transformer according to claim 1, wherein a second collar provided with a second slit is formed between the second winding part and the third winding part.
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| CN106816307A (en) * | 2017-03-25 | 2017-06-09 | 珠海常辉电子有限公司 | The structure and preparation method of a kind of transformer |
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|---|---|
| JP6136522B2 (en) | 2017-05-31 |
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