JP2011040443A - Magnetic element - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a magnetic element which does not cause a short-circuit between coil terminals even in a state that the coil terminals cross each other. <P>SOLUTION: This magnetic element 10 includes: a core 20; first and second coils 30 disposed in the core in a state that lead wire 31 coated by an insulating film is wound; and a case 40 including a terminal table 43 for holding the core 20, and having a plurality of terminals. First and second coil terminals 33 extending from winding parts 32 of the first and second coils 30 are disposed so as to cross each other, a coil terminal 33A passes the front side of the terminal table part 43 to be bound by a terminal 50B, and a coil terminal 33B passes the rear side of the terminal table part 43 to be bound by a terminal 50A. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a magnetic element used in various electronic devices.

  In Patent Document 1, an interlayer insulating film (24) is embedded in a groove (14) formed under the surface of a coil (22), and the superconducting thin film cross-connect wiring portion is formed by the interlayer insulating film (24). A configuration in which (25) intersects the coil (22) is realized. In Patent Document 2, the circuit patterns 22a to 23b intersect the circuit pattern 24 formed on the printed circuit board 21 by connecting the leads 14 and 15 to the circuit patterns 22a to 23b. Is realized. Further, Patent Document 3 discloses a configuration in which the coil lead 5 (11) is drawn from the coil 4 (10) and the coil lead 5 (11) intersects.

Japanese Patent Laid-Open No. 8-139376 (see abstract, etc.) Japanese Unexamined Patent Publication No. Sho 62-98609 (see page 3, upper right column, FIG. 3 etc.) JP-A-3-218610 (see each figure)

  Incidentally, some magnetic elements have a plurality of terminals arranged side by side as disclosed in Patent Document 3 described above. In such a magnetic element, for example, depending on a circuit pattern of a substrate (mounting substrate) to be mounted, as shown in FIG. 1 of Patent Document 3, coil leads (coil terminals) are entangled with terminals. There may be a portion that overlaps and intersects with each other in the portion between.

  In such intersecting portions of the coil terminals, the coating covering the coil terminals may be peeled off due to some factor at the intersecting portions, and the coil terminals may be short-circuited. As the cause, for example, heat may be transmitted to the intersecting portion during soldering and the coating may be melted. As another factor, the coil terminals may be short-circuited due to damage to the coating, deterioration of the coating, or the like. In addition, due to thermal factors other than soldering (for example, overheating at the time of manufacture and use of the magnetic element), the coating of the coil terminal may be melted, causing a short circuit between the coil terminals.

  Even if the content disclosed in Patent Document 1 is applied to such a problem, Patent Document 1 relates to a coil created using a semiconductor manufacturing technology, such as a coating on a coil terminal being melted. There is no problem, and thus the short circuit between the coil terminals cannot be solved. In addition, since the contents disclosed in Patent Document 2 do not have a state in which the coil terminals are in contact with each other, even if this configuration is applied, the short-circuit between the coil terminals cannot be solved. Furthermore, although there is a portion where the coil terminals cross each other, Patent Document 3 does not disclose anything about eliminating the short circuit between the coil terminals in that portion.

  The present invention has been made on the basis of the above circumstances, and an object thereof is to provide a magnetic element that does not cause a short-circuit between coil terminals even when the coil terminals cross each other. is there.

  In order to solve the above-mentioned problems, the first side surface of the magnetic element of the present invention is the first and the first arranged on the core in a state where the core and the conductive wire covered with the insulating film are wound. The first and second coil terminals extending from the winding portions of the first and second coils, and a case including a terminal block having a plurality of terminals and holding the core. It arrange | positions so that it may mutually cross, and either one of the 1st and 2nd coil terminals is entangled with any one terminal through the front side of a terminal base part, and among 1st and 2nd coil terminals Either one of them is entangled with any other terminal through the back side of the terminal block.

  When configured in this manner, the first and second coil terminals intersect each other, but one of the first and second coil terminals passes through the front side of the terminal block, and the other is the terminal. It passes through the back side of the base and reaches different terminals. Therefore, the first coil terminal and the second coil terminal can be separated from each other without contacting (overlapping). Thereby, it is possible to prevent a short circuit from occurring between the first coil terminal and the second coil terminal.

  Further, according to another aspect of the magnetic element of the present invention, in the above-mentioned invention, the movement of the core that protrudes inward of the case from the terminal block portion and toward the terminal block portion is restricted inside the case. It is preferable that a protruding portion is provided.

  When comprised in this way, the movement of the core inside a case is controlled by a protrusion part. Therefore, the first and second coil terminals are sandwiched between the core and the terminal base part, and it is possible to prevent a problem such as disconnection.

  Further, according to another aspect of the magnetic element of the present invention, in the above-described invention, at least three or more ribs protruding from at least two inner wall surfaces different from the terminal block are provided inside the case. It is preferable that the rib is provided in a pointed shape toward the tip of the protrusion, and the core is held inside the case by crushing the pointed rib from the tip side.

  When comprised in this way, the core is hold | maintained by the said rib by the said rib by the front end side of the protrusion of a rib being crushed by the core. For this reason, the case can hold the core without using an adhesive or the like. In addition, since the leading end side of the protrusion of the rib is crushed by the core, a predetermined pressing force acts between the rib and the core. Therefore, it is possible to favorably provide a frictional force that prevents the core from moving inside the case.

  According to the present invention, it is possible to prevent a short circuit between the coil terminals even when the coil terminals cross each other.

It is a perspective view which shows the structure of the magnetic element which concerns on the 1st Embodiment of this invention. It is a side view which shows the structure of the magnetic element of FIG. It is a bottom view which shows the positional relationship of a case and a spectacles type core among the magnetic elements of FIG. FIG. 2 is a side sectional view showing a state where the magnetic element of FIG. 1 is cut along a YZ plane at the center in the X-axis direction of the magnetic element. It is a side view which shows the structure of the spectacles type core of the magnetic element of FIG. It is a perspective view which shows the structure of the case of the magnetic element of FIG. FIG. 2 is an enlarged side view showing a state where a coil terminal is led out in the magnetic element of FIG. 1. It is a perspective view which shows the structure of the magnetic element which concerns on the 2nd Embodiment of this invention. It is front sectional drawing which shows the structure of the case of the magnetic element which concerns on the 2nd Embodiment of this invention. It is a perspective view which shows the structure of the hoop material used in the 2nd Embodiment of this invention.

(First embodiment)
Hereinafter, a magnetic element 10 according to a first embodiment of the present invention will be described with reference to FIGS.

  In the following description, X1, X2, Y1, Y2, Z1, and Z2 shown in FIG. 1 will be used. However, as necessary, the X1 side is the left side, the X2 side is the right side, and Y1 is the back side. The side, Y2 is the front side, Z1 is the upper side, and Z2 is the lower side.

  As shown in FIG. 1 and the like, the magnetic element 10 of the present embodiment is a transformer, and includes a glasses-type core 20, a coil 30, and a case 40. Among these, the glasses-type core 20 corresponds to the core. As shown in FIGS. 2, 4, 5, and the like, this glasses-type core 20 has an outer shape obtained by extending a circular shape along the Y axis when viewed from X2 to X1. The part corresponding to is a rectangle. And the external appearance which a semicircle shape is located in the edge part of the part corresponding to expansion of a rectangle is exhibited.

  The eyeglass-type core 20 has two through holes 21 centering on the X axis. The center of each through hole 21 coincides with the above-described semicircular radial center. The diameters of the two through holes 21 are the same or substantially the same. Further, the two through holes 21 are separated by a predetermined interval. The glasses-type core 20 has a rectangular shape in front and plane.

  The eyeglass-type core 20 is made of a magnetic material. As the magnetic material, for example, various ferrites such as nickel-based ferrite or manganese-based ferrite, permalloy, sendust, and the like can be used. .

  A coil 30 is disposed on the glasses-type core 20 by winding a conducting wire 31. In this embodiment, two coils 30 (a primary side coil, a secondary side coil, and the like) are arranged. The two coils 30 include two through-holes 21 in the glasses-type core 20 (hereinafter, when it is necessary to distinguish the two through-holes 21, the through-holes 21 positioned on the near side (Y2 side) are replaced with the through-holes 21 </ b> A. And the through hole 21 positioned on the back side (Y1 side) is wound around a portion (hereinafter, this portion is referred to as an intermediate portion 22). And the winding part 32 of the coil 30 is comprised by this winding. Each coil 30 has a pair of coil terminals 33 extending from the winding portion 32 (that is, a total of four coil terminals 33 in the present embodiment). Further, the two coils 30 are arranged adjacent to each other along the Z-axis direction.

  The two coils 30 are portions of the glasses-type core 20 that extend from the respective through holes 21 to the ends of the glasses-type core 20 in the Y-axis direction (hereinafter, this portion is referred to as an end 23 (see FIG. 5). ) And)). Further, the number of coils 30 is not limited to two, and may be three or more.

  Further, the above-described glasses-type core 20 is attached to the case 40. The case 40 is formed of a nonmagnetic material as well as insulating properties such as resin. As shown in FIGS. 1, 6, and the like, the case 40 includes an upper surface portion 41, an end surface portion 42, and a terminal base portion 43 as main portions. Among these, the upper surface portion 41 is a flat plate-like portion located on the upper side (Z1 side) of the case 40, and receives the glasses-type core 20 from the upper side (Z1 side). This is the part that regulates the movement toward the Z1 side).

  Further, the end surface portion 42 is a flat plate-like portion located on the back side (Y1 side) and the near side (Y2 side) of the case 40, respectively. In the present embodiment, the end surface portion 42 has a width dimension slightly larger in the X-axis direction than the upper surface portion 41, and is located on the left side (X1 side) and the right side (X2) side of the upper surface portion 41, respectively. It protrudes. The lower end (lower end portion) of the end surface portion 42 is located at the same position as the lower end (lower end portion) of the terminal block 43 (Z2 side) in the Z-axis direction. is doing.

  The case 40 is provided with a pair of terminal block portions 43 so as to connect the pair of end surface portions 42. The terminal block 43 has a height dimension (dimension along the Z-axis direction) that is approximately half of the height dimension of the end face section 42. In addition, the height dimension of the left side (X1 side) portion of the pair of terminal block portions 43 is the highest among the terminal block portions 43. And when it goes to the right side (X2 side) from the site | part on the left side (X1 side) of the terminal block part 43, there exists a part parallel to XY plane only by the predetermined | prescribed, and it is further on the right side (X2 side) from the parallel part. When it goes, it becomes a taper part which advances toward the lower side (Z2 side).

  The terminal block 43 is provided with a plurality of terminals 50 (six on each side in the X-axis direction in FIG. 1 and the like). When the terminal block 43 is formed, the terminal block 43 is formed in a state where one side of the plurality of terminals 50 is embedded in the terminal block 43 by, for example, insert molding. Here, the terminal 50 has a parallel portion that maintains a predetermined parallel to the XY plane from the terminal base portion 43 toward the right side (X2 side), but when the parallel portion passes, the right side (X2 side). ) As the taper portion proceeds toward the lower side (Z2 side). Moreover, when it passes the taper part and goes to the right side (X2 side) again, it becomes a mounting part parallel to XY plane again. This mounting part is a part connected to the mounting part of the mounting substrate by, for example, soldering by dipping. In addition, it is preferable that the position in the Z-axis direction of the lower surface of the mounting portion is located on the lower side (Z2 side) than the positions in the Z-axis direction of the terminal block portion 43 and the end surface portion 42.

  Moreover, as shown in FIG. 2 etc., the groove part 43a is provided in the site | part of the terminal stand part 43 below (Z2 side). The groove 43a is a portion that is recessed by a predetermined amount from the lower part (Z2 side) of the terminal block part 43 toward the upper side (Z1 side). For example, the recess 43a is slightly larger than the diameter of the conducting wire, but is positioned below the parallel portion of the terminal 50 (Z2 side). Moreover, the site | part in which the groove part 43a is provided is a part between the adjacent terminals 50 in the Y direction of the terminal base part 43. As shown in FIG. Thereby, the part in which the terminal 50 exists among the terminal block parts 43 becomes the column shape which goes to the lower side (Z2 side).

  The portion surrounded by the terminal block 43, the upper surface 41, and the end surface 42 as described above is an opening where the flesh of the case 40 does not exist (hereinafter, this portion is referred to as the side opening 44). And). On the other hand, the lower part (Z2 side) part of the case 40 and the part surrounded by the pair of end surface parts 42 and the pair of terminal block parts 43 is also an opening part where the meat part of the case 40 does not exist. (Hereafter, this portion is referred to as a lower surface opening 45).

  As apparent from FIG. 4, the dimension of the side opening 44 in the Z-axis direction is smaller than the dimension of the glasses-type core 20 in the Z-axis direction, and the glasses-type core 20 extends along the X-axis direction. , And a size that prevents the case 40 from jumping outside. Further, the lower surface opening 45 is provided larger than the size in the XY direction of the glasses-type core 20, and the glasses-type core 20 can enter the internal space of the case 40 from the lower surface opening 45. Yes.

  Here, as shown in FIG. 3, FIG. 6, and the like, the case 40 is provided with a protruding portion 46 and a rib 47, both of which protrude toward the internal space of the case 40. As shown in FIG. 6, the protruding portion 46 is provided with a rectangular bottom shape, and the Z direction is the longitudinal direction. That is, the protrusion 46 is provided in a columnar shape. The protrusions 46 are provided at the four corners of the internal space of the case 40. The dimension H1 of the protrusion 46 in the Z-axis direction is approximately half of the dimension H2 of the internal space in the Z-axis direction. By setting the dimension H1 to such a dimension, the coil terminal 33 is formed into the side opening 44. When pulling out, it becomes easy to pull out. However, the dimension H1 is not limited to about half of the dimension H2 as long as the drawability of the coil terminal 33 is not impaired, and can be changed as appropriate.

  Further, since the protrusion 46 exists in the internal space of the case 40, even when the glasses-type core 20 moves along the X-axis direction, as shown in FIG. A certain gap S is secured between the two. For this reason, the coil terminal 33 is sandwiched between the glasses-type core 20 and the terminal block 43, and it is possible to prevent a problem such as disconnection. In FIG. 3, a state where the glasses-type core 20 moves in the internal space and is in contact with any one of the protrusions 46 is indicated by a two-dot chain line. As described above, even when the glasses-type core 20 is offset in any of the X-axis directions, the two ribs 47 present on the respective end surface portions 42 are arranged so as to maintain a contact state with the glasses-type core 20. ing.

  Further, the rib 47 is provided on the inner wall of the end surface portion 42 and has a triangular bottom surface, and has a cusp shape toward the tip of the protrusion. In addition, in FIG. 3 and FIG. 6 and the like, two ribs 47 are provided on each end surface portion 42 (four in total), and each end surface portion 42 has the center in the X-axis direction as a boundary. They are arranged symmetrically. The rib 47 holds the glasses-type core 20, but has a dimension P between the rib 47 existing on one end surface portion 42 and the rib 47 existing on the other end surface portion 42 (Y-axis in FIG. 3). Is smaller than the dimension Q along the Y axis of the eyeglass-type core 20. Therefore, the tip side of the rib 47 is crushed by the glasses-type core 20 and holds the glasses-type core 20.

  In the present embodiment, a total of four ribs 47 are provided. However, the number of ribs 47 is not limited to four. If there are at least three or more ribs 47, the glasses-type core 20 can be stably held.

<Derivation of coil terminal>
Subsequently, in the magnetic element 10 having the above-described configuration, the derivation of the coil terminal 33 until the coil terminal 33 is drawn from the winding portion 32 of the coil 30 and entangled with the terminal 50 will be described.

  As shown in FIG. 7, one of the coil terminals 33 extending from the winding part 32 is derived from the edge E1 of the through hole 21A as a starting point (corresponding to the first coil terminal; The coil terminal 33 is referred to as a coil terminal 33A). The coil terminal 33A has the other coil terminal 33 (corresponding to the second coil terminal; hereinafter, this coil terminal 33 is referred to as a coil terminal 33B) across a center line Lz parallel to the Z axis in FIG. It is entangled with a terminal 50 (hereinafter, this terminal 50 is referred to as a terminal 50B) located on the back side (Y1 side) of the terminal 50 to be entangled (hereinafter, this terminal 50 is referred to as a terminal 50A).

  At this time, the coil terminal 33A passes through the front side of the terminal block 43, reaches the terminal 50B, is wound for a predetermined turn, and then the coil terminal 33A and the terminal 50B can be electrically connected by a method such as soldering. It is fixed in the state. In this case, when viewed from the front side (Y2 side) to the back side (Y1 side), as can be seen from FIG. 1, the coil terminal 33A is wound around the terminal block 43 in a clockwise direction. Become.

  Of the coil terminals 33 extending from the winding part 32, the other coil terminal 33B is led out from the edge E2 of the through hole 21B as a starting point. The coil terminal 33B is entangled with a terminal 50A located on the near side (Y2 side) with respect to the terminal 50B with which the coil terminal 33A is entangled across the center line Lz in FIG. At this time, the coil terminal 33B passes through the back side of the terminal block 43 and reaches the terminal 50, is wound for a predetermined turn, and then the coil terminal 33B and the terminal 50A can be electrically connected by a method such as soldering. It is fixed in the state. In this case, when viewed from the front side (Y2 side) to the back side (Y1 side), as shown in FIG. 1, the coil terminal 33B is wound counterclockwise around the terminal block 43. It becomes.

  In other words, the coil terminal 33A passes through the front side of the terminal block 43 and is entwined with the terminal 50B. In addition, the coil terminal 33 </ b> B passes through the back side of the terminal block 43 and is entangled with the terminal 50 </ b> A. At this time, the two coil terminals 33A and 33B are arranged so as to cross each other. FIG. 7 shows how the two coil terminals 33A and 33B intersect in this way on a certain projection plane (in FIG. 7, this projection plane is a projection plane parallel to the YZ plane). ing.

  When another expression is used, the coil terminal 33A starts from the edge E1, passes through the side opening 44, reaches the terminal 50B, and is entangled with the terminal 50B. In addition, the coil terminal 33B starts from the edge E2, passes through the lower surface opening 45, reaches the terminal 50A, and is entangled with the terminal 50A. Therefore, the part of the coil terminal 33A that reaches the terminal block 43 is located on the front side (Y2 side; one side) of the coil terminal 33B that is connected to the terminal block 43. However, the portion of the coil terminal 33A that is entwined with the terminal 50B is located on the back side (Y1 side; the other side) of the portion of the coil terminal 33B that is entwined with the terminal 50A.

<Effect in the present embodiment>
According to the magnetic element 10 configured as described above, although the coil terminals 33A and 33B intersect each other, the coil terminal 33A passes through the front side of the terminal block 43 and reaches the terminal 50B, and the coil terminal 33B is connected to the terminal block 43. To the terminal 50A. Therefore, the coil terminal 33A and the coil terminal 33B can be separated from each other without being in contact with each other (not overlapped). Thereby, it is possible to prevent a short circuit from occurring between the coil terminal 33A and the coil terminal 33B.

  In the present embodiment, a protrusion 46 is provided inside the case 40. Therefore, the movement of the eyeglass core 20 inside the case 40 is restricted by the protrusion 46. As a result, the coil terminals 33 </ b> A and 33 </ b> B can be prevented from being broken by being sandwiched between the glasses-type core 20 and the terminal block 43.

  Further, in the present embodiment, a rib 47 is provided inside the case 40. The leading end side of the protrusion of the rib 47 is crushed by the eyeglass core 20. For this reason, the eyeglass core 20 is held by the case 40 by the ribs 47. Thereby, the case 40 can hold the glasses-type core 20 without using an adhesive or the like. Here, when the glasses-type core 20 is fixed to the case 40 using an adhesive, the man-hours in manufacturing increase, and the characteristics of the magnetic element 10 may change depending on the use of the adhesive. However, in the present embodiment, since the ribs 47 are present in the case 40, the glasses-type core 20 is held in the case 40 without using an adhesive, so that the number of manufacturing steps can be reduced. Since the adhesive is not used, the characteristics of the magnetic element 10 can be prevented from changing.

  Further, since the leading end side of the protrusion of the rib 47 is crushed by the glasses-type core 20, a predetermined pressing force acts between the rib 47 and the glasses-type core 20. Therefore, it is possible to satisfactorily give a frictional force that prevents the eyeglass core 20 from moving inside the case 40.

(Second Embodiment)
Hereinafter, a magnetic element 10A according to a second embodiment of the present invention will be described with reference to FIGS. In the present embodiment, the same members as those in the first embodiment will be described using the same reference numerals.

  As shown in FIG. 8, the terminal block 43 of the magnetic element 10 </ b> A is provided with a bowl-shaped recess 48. The bowl-shaped recess 48 is configured by cutting out the upper side of the terminal 50 </ b> A of the terminal block 43 in a substantially L shape in the X-axis direction. That is, the bowl-shaped recess 48 has a vertical recess 48a that proceeds downward by a predetermined depth from the upper surface of the terminal base 43, and a predetermined length from the lower end side of the vertical recess 48a to the back side (Y1 side). There is a horizontal recess 48b that advances in this manner.

  In addition, as shown in FIG. 8, a terminal block 43 extends over the horizontal recess 48b. Hereinafter, this portion is referred to as a locking portion 48c.

  As shown in FIG. 8, a recess 49 is provided at the end of the terminal block 43 on the back side (Y1 side) by notching the terminal block 43 into a substantially rectangular shape. As is clear from FIG. 8, the bottom 49 a of the recess 49 is located sufficiently below the lower end of the protrusion 46. Thereby, when the coil terminal 33 is pulled out from the glasses-type core 20 and the coil terminal 33 is entangled with the terminal 50 located closest to the innermost side (Y1 side), the coil terminal 33 is allowed to pass through the recess 49. Therefore, the coil terminal 33 and the protrusion 46 do not interfere with each other.

  As shown in FIGS. 8 and 9, in the present embodiment, the upper terminals 51 are continuous with some of the terminals 50 (a total of four terminals 50 in the present embodiment). That is, as shown in FIG. 9, a continuous terminal body 52 in which the terminal 50 and the upper terminal 51 are continuous is attached to the terminal base 43, and a part of the continuous terminal 52 is part of the terminal base 43. It is in a state embedded in. The terminal 50 and the upper terminal 51 protrude from the portion where the continuous terminal body 52 is embedded in the terminal block 43.

  Here, in the present embodiment, a hoop material 60 as shown in FIG. 10 is installed inside a mold of a type in which an upper mold and a lower mold are brought together, for example. The hoop material 60 has an outer frame 61 having a well shape, and a terminal protruding portion 62 is also provided so as to go inward of a portion surrounded by the outer frame 61.

  When the continuous terminal body 52 and the terminal 50 are formed, the molten resin is poured into a cavity inside the mold, and the case 40 is formed in a state where a part of the terminal protruding portion 62 is embedded. Then, when the terminal protrusion 62 located on the right side (X2 side) is cut along the cutting line C1 and the cutting line C2 in FIG. 10, a continuous terminal body 52 as shown in FIGS. 8 and 9 is formed. . Of the terminal protrusions 62, those located on the left side (X1 side) are cut into FIGS. 8 and 9 when the terminal protrusion 62 is cut along the cutting line C 3 after the case 40 is formed. A terminal 50 as shown is formed.

  In the present embodiment, as is apparent from FIG. 8, the continuous terminal body 52 (upper terminal 51) does not exist in the portion where the bowl-shaped concave portion 48 is provided in the terminal base 43, and the terminal block is similarly provided. The continuous terminal body 52 (upper terminal 51) does not exist in the site | part in which the hollow part 49 is provided in the part 43. FIG. In the present embodiment, the bowl-shaped recess 48, the recess 49, and the continuous terminal body 52 are provided on the terminal base 43 located on the right side (X2 side) of the case 40. However, at least one of the bowl-shaped recess 48, the recess 49, and the continuous terminal body 52 may be provided on the terminal base 43 positioned on the left side (X1 side) of the case 40.

<Derivation of coil terminal>
Next, derivation of the magnetic element 10A having the above-described configuration until the coil terminal 33 is entangled from the winding part 32 of the coil 30 to the terminal 50 will be described.

  In the present embodiment, the coil terminal 33A reaches the terminal 50B through the front side of the terminal base 43, starting from the edge E1, as in the first embodiment described above, and only for a predetermined turn. After that, the coil terminal 33A and the terminal 50B are fixed in an electrically conductive state by a method such as soldering.

  However, when the coil terminal 33B travels from the edge E2 that is the starting point toward the lower side (Z2 side), the coil terminal 33B passes through the back side of the terminal block 43 and then enters the bowl-shaped recess 48 (particularly the horizontal recess 48b). . At this time, a locking portion 48c exists between the coil terminal 33B and the coil terminal 33A. That is, since the latching | locking part 48c is pressing down the coil terminal 33B from upper part (refer FIG. 8), the coil terminal 33A and the coil terminal 33B do not contact directly, but can maintain the separated state.

  Then, after passing through the bowl-shaped recess 48 (particularly the horizontal recess 48b), it goes around to the front side of the terminal block 43 and then reaches the terminal 50A. Then, the coil terminal 33B and the terminal 50A are fixed in a state in which the coil terminal 33B and the terminal 50A can be electrically connected by a method such as soldering.

<Effect in the present embodiment>
According to the magnetic element 10A having the above-described configuration, the coil terminal 33B passes through the bowl-shaped recess 48 from the back side of the terminal block 43 and wraps around the front side of the terminal block 43, whereby the coil terminal 33A and the coil terminal 33B are Can be separated from each other without contacting (overlapping). Thereby, it is possible to prevent a short circuit from occurring between the coil terminal 33A and the coil terminal 33B.

  In the present embodiment, the terminal block 43 is provided with a recess 49. Therefore, when the coil terminal 33 is entangled with the terminal 50 located closest to the innermost side (Y1 side), the coil terminal 33 can be passed through the recess 49, and the coil terminal 33 and the protrusion 46 Can be prevented from interfering with each other.

  Further, in the present embodiment, a continuous terminal body 52 is provided. Therefore, the coil terminal 33 can be tied not only to the terminal 50 but also to the upper terminal 51, and the range of selection when the coil terminal 33 is tied can be widened. Moreover, if one coil terminal 33 is entangled with the terminal 50 and the other coil terminal 33 is entangled with the upper terminal 51 of the continuous terminal body 52 located adjacent to the terminal 50, the coil adjacent to the entangled position is obtained. It becomes possible to widen the space | interval between the terminals 33, and it becomes possible to prevent further that a short circuit arises among them.

<Modification>
The magnetic elements 10 and 10A according to the embodiment of the present invention have been described above, but the present invention can be variously modified in addition to this. This will be described below.

  In each of the above-described embodiments, the case where the glasses-type core 20 is used as the core has been described. However, the core is not limited to the glasses-type core 20, and for example, a drum-type core, a core having a T-shaped side surface, or the like may be used as the core. Moreover, the glasses-type core 20 may be configured by attaching a plurality of core members together.

  Further, in each of the above-described embodiments, the coil 30 is configured of a round conductive wire 31. However, the coil is not limited to one composed of a round conducting wire 31 and may be composed of a wide conducting wire such as a flat wire.

  In each of the above-described embodiments, the case 40 is described as having the upper surface portion 41, the end surface portion 42, and the terminal base portion 43, and further having the side surface opening portion 44 and the lower surface opening portion 45. However, the case is not limited to such a shape. For example, a case in which the upper surface portion 41 or the end surface portion 42 does not exist may be used. The terminal block 43 may be a separate case.

  Further, the protruding portion 46 in each of the above-described embodiments is not limited to a columnar shape, and when the glasses-type core 20 moves along the X-axis direction, between the glasses-type core 20 and the terminal block 43. Any shape may be used as long as the gap S can be secured. In addition, as the shape of the protrusions other than the columnar shape, there are various shapes such as a columnar shape, an elliptical columnar shape, a polygonal columnar shape, and a columnar shape with the Z-axis as the long shape, such as the protruding portion 46, but with the X-axis or the Y-axis as the longest. Can be mentioned. Further, in the case 40 of each embodiment described above, a configuration in which the protruding portion 46 is omitted may be employed.

  In addition, the rib 47 in each of the above-described embodiments has a triangular bottom surface. However, the rib 47 may have any shape as long as the rib 47 is pointed toward the tip of the protrusion. good. Examples of the shape other than the triangular shape of the bottom surface include a polygonal shape having corners such as a quadrilateral shape, and a shape having corners but other sides being curved. Further, the rib 47 may be made of a material different from that of the case 40. For example, the rib 47 may be configured by attaching an elastomer to the case 40. Further, in the case 40 of each embodiment described above, a configuration in which the rib 47 is omitted may be employed.

  Further, in the above-described second embodiment, the terminal 50 is configured as a part of the continuous terminal body 52. However, the continuous terminal body 52 is not limited to such a shape, and may be a shape in which, for example, two upper terminals and the terminal 50 are continuous.

  In each of the above-described embodiments, the case of a transformer is described as the magnetic element to which the present invention is applied. However, the magnetic element is not limited to the transformer, and the present invention may be applied to a magnetic element (inductor, choke coil, filter, etc.) other than the transformer. Further, the use of the magnetic element 10 in the above-described embodiment is not particularly limited, and can be used for various uses.

  The magnetic element of the present invention can be used in the field of electrical equipment.

10 ... magnetic element 20 ... glass core (corresponding to the core)
21, 21 </ b> A, 21 </ b> B ... through-hole 22 ... intermediate part 23 ... end 30 ... coil 31 ... conducting wire 32 ... winding part 33, 33A, 33B ... coil terminal 40 ... case 41 ... upper surface part 42 ... end face part 43 ... terminal block Part 44: Side opening 45 ... Bottom opening 46 ... Projection part 47 ... Rib 48 ... Gutter-like recess 48a ... Vertical recess 48b ... Horizontal recess 49 ... Depression part 50 ... Terminal 51 ... Upper terminal 52 ... Continuous terminal body

Claims (3)

The core,
A first coil and a second coil disposed on the core in a state in which a conducting wire covered with an insulating film is wound;
While holding the core, a case comprising a terminal block having a plurality of terminals,
Comprising
The first and second coil terminals extending from the winding portions of the first and second coils are arranged so as to cross each other,
Either one of the first and second coil terminals passes through the front side of the terminal block and is entangled with one of the terminals, and the other of the first and second coil terminals is Entangled with any other terminal through the back side of the terminal block,
A magnetic element characterized by the above. The magnetic element according to claim 1,
A magnetic part characterized in that a protrusion is provided inside the case that protrudes inward of the case from the terminal block and restricts movement of the core toward the terminal block. element. The magnetic element according to claim 1 or 2,
Inside the case are provided with at least three or more ribs protruding from at least two inner wall surfaces different from the terminal block,
The rib is provided in a pointed shape toward the tip of the protrusion,
By crushing this pointed rib from the tip side, the core is held inside the case.
A magnetic element characterized by the above.

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