JP4545494B2 - Coil component and method of manufacturing coil component - Google Patents

Description

The present invention relates to a coil component and a method for manufacturing the coil component .

  Conventionally, for example, a coil component used for a common mode filter or the like includes a core composed of a core part and flanges provided at both ends thereof, an electrode provided on each of the core parts, and a core. And a conductive wire wound around the portion and connected at both ends to the electrodes.

As an example of constituting this electrode, as shown in Patent Document 1, a first sandwiching portion extending in parallel to one surface of the collar portion and having a first sandwiching surface, and a second sandwiching surface extending in parallel to the other surface of the collar portion A second clamping part having a first clamping part and a second coupling part connecting the first clamping part and the second clamping part. There is a substantially U-shaped metal terminal that sandwiches one surface and the other surface by the holding surface.
JP 2003-22916 A

  In addition, with the recent miniaturization of electronic devices, common mode filters and the like used in these electronic devices have also been miniaturized, and currently common mode filters and the like are configured using coil parts of about several millimeters. .

  In the coil component described in Patent Document 1, a substantially U-shaped metal terminal is extrapolated to a substantially rectangular parallelepiped collar part of the magnetic core, and the metal terminal is formed in a shape covering the collar part across the top surface, the side surface, and the bottom surface. It is attached. The metal terminal is molded by pressing a metal plate, and the magnetic core is molded through a process of compression and firing of magnetic powder such as ferrite.

  Due to the difference in molding method, the metal terminal is generally formed with higher processing accuracy such as dimensions than the magnetic core. For coil components with large dimensions, for example, even if the molding dimension of the magnetic core is larger than the specified design dimension, it is possible to absorb the dimensional error due to bending of the metal terminal and attach the metal terminal to the magnetic core. It is.

  However, in the case of a coil component having a longitudinal dimension of about several millimeters, the metal terminal is also small, so that the dimensional error of the magnetic core may not be absorbed. If the dimensional error of the magnetic core is on the minus side of the design dimension, there is no problem, but for example, the magnetic core formed with the distance between one side of the buttocks and the other side larger than the design dimension is almost U-shaped. When the metal terminal is extrapolated, since the dimension of the magnetic core is larger than the distance between the first holding part and the second holding part of the metal terminal, the first holding part and the second holding part The magnetic core spreads more easily than the metal terminal.

  In addition, one of the first holding portion and the second holding portion of the metal terminal is a surface that comes into contact with the board-shaped mounting surface. When the first holding part and the second holding part are expanded, the first holding part or the second holding part is originally in a state of being in contact with one surface or the other surface of the collar part substantially in parallel. In contrast to mounting, when mounted in an expanded state, the distance between the mounting surface and the coil component may vary, which may reduce coplanarity.

  Accordingly, an object of the present invention is to provide a coil component in which the core is difficult to be removed from the metal terminal after the metal terminal is extrapolated to the core and the metal terminal does not expand.

In order to achieve the above object, a pair having a core part, one surface provided at each end of the core part, the other surface facing the one surface, and a connecting surface connecting the one surface and the other surface. A core having a flange portion, a first clamping portion having a first clamping surface facing the one surface, a second clamping portion having a second clamping surface facing the other surface, A first holding portion and a second holding portion when the first holding portion and the second holding portion are connected to the connecting surface. Is wound around the core portion and a metal terminal that follows the one surface and the other surface and sandwiches the one surface and the other surface by the first sandwiching surface and the second sandwiching surface. A conductive wire having both ends connected to the metal terminal, and an end edge on the upstream side in the mounting direction where the metal terminal on the one surface and the other surface is mounted is in a direction opposite to the mounting direction. Towards First inclined surface and a second inclined surface that distance had decreases gradually are respectively provided, the connecting surface is disposed on the mounting direction upstream side relative to said first inclined surface and said second inclined surface, said An angle formed by at least one surface of the one surface or the other surface and the connecting surface is an acute angle , and a distance from the one surface side end of the connecting surface to the other surface side end of the connecting surface is The metal terminal is configured to be smaller than the distance from the tip of the first holding portion to the tip of the second holding portion, and from the boundary position between the one surface and the first inclined surface, the other surface and the second inclined surface. The distance to the boundary position is configured to be greater than the distance from the tip of the first holding portion to the tip of the second holding portion of the metal terminal, and the boundary position of the connecting portion with the first holding portion And a coil component configured to be smaller than a distance from the second sandwiching portion to the boundary position .

According to such a configuration, the direction of the force applied to the collar when the collar is clamped by the clamping surface of at least one of the first clamping part and the second clamping part is the direction of the connecting part of the metal terminal become. Moreover, a 1st clamping part and a 2nd clamping part can be moved along a 1st inclined surface and a 2nd inclined surface, and can be arrange | positioned on one surface and another surface. Moreover, a connection surface can be arrange | positioned between a 1st clamping part and a 2nd clamping part, without expanding between the 1st clamping part and the 2nd clamping part.

  Further, it is preferable that the other surface is a portion that comes into contact with the substrate when the coil component is mounted on the substrate, and at least the angle formed by the other surface and the connecting surface is an acute angle. According to such a configuration, the other surface comes into contact with the substrate at a location where the other surface intersects the connecting surface.

  In addition, a recess may be formed in the one surface and the other surface, and a protrusion that can be engaged with the recess may be provided in the first sandwiching surface and the second sandwiching surface. According to such a structure, when a metal terminal is extrapolated to the collar part, it becomes possible for a convex part to engage with a recessed part.

  Further, the angle formed by the one surface and the other surface with the connecting surface may be an acute angle. According to such a structure, when pinching a collar part with the clamping surface of both the 1st clamping part and the 2nd clamping part, the direction of the force applied to a collar part turns into the connection part direction of a metal terminal.

  The coil component may further include a substantially rectangular parallelepiped plate-shaped core, and the plate-shaped core may be fixed across the pair of flange portions.

In order to achieve the above object, the present invention has a winding core portion, one surface provided at each end of the winding core portion, the other surface facing the one surface, and a connection surface connecting the one surface and the other surface. A core having a pair of flanges, a first clamping part having a first clamping surface facing the one surface, a second clamping part having a second clamping surface facing the other surface, A coupling portion that connects the first clamping portion and the second clamping portion and faces the coupling surface, and the first clamping portion and the second clamping pin when mounted on the flange portion A portion that follows the one surface and the other surface and is wound around the core portion and a metal terminal that sandwiches the one surface and the other surface by the first sandwiching surface and the second sandwiching surface. And a conductive wire having both ends connected to the metal terminal, and an end edge on the upstream side in the mounting direction where the metal terminal on the one surface and the other surface is mounted is opposite to the mounting direction. Heading to A first inclined surface and a second inclined surface, each of which gradually decreases in distance from each other, are provided, and the angle formed between the one surface and the other surface with the connecting surface is an acute angle, and the connecting surface is the first inclined surface. The distance from the one surface side end of the connecting surface to the other surface side end of the connecting surface is the first end of the metal terminal. The distance between the front end of the holding portion and the front end of the second holding portion is smaller than the distance from the boundary position between the one surface and the first inclined surface to the boundary position between the other surface and the second inclined surface. The metal terminal is configured to be larger than the distance from the tip of the first holding portion to the tip of the second holding portion, and from the boundary position of the connecting portion to the first holding portion. a method of manufacturing a smaller than configured coil component distance to the boundary position between the parts, said first holding portion tip and said second A step of disposing the terminal fitting with respect to the flange so that the connecting surface is located between the front end of the holding portion and the front end of the first holding portion and the front end of the second holding portion, respectively. And a step of contacting the inclined surface and the second inclined surface and sliding the first inclined surface and the second inclined surface to the one surface and the other surface. A method for manufacturing a part is provided.

According to the coil component of claim 1 and claim 2, since the angle formed between the connecting surface and at least one of the one surface or the other surface is an acute angle, the connecting portion and the first holding portion or the second holding portion are combined. An angle formed with at least one of the holding portions is an acute angle. In this case, the vector direction of the force applied to the collar when the collar is clamped by at least one of the first clamping part and the second clamping part is also directed toward the connecting part of the metal terminal. . Therefore, the friction between the first and second clamping surfaces and the one surface and the other surface of the collar portion generated based on the clamping force between the first clamping portion and the second clamping portion. In addition to holding by force, it is possible to hold the collar part by at least one of the first clamping part or the second clamping part and the connecting part, and the collar part is difficult to come off from the metal terminal. In addition, when holding the collar part larger than the distance between the first holding part and the second holding part, the first holding part and the second holding part are expanded, Since the angle formed by at least one of the first sandwiching portion and the second sandwiching portion is less than 90 ° in advance, the angle can be 90 ° or less even when the first sandwiching portion or the second sandwiching portion is expanded. Therefore, it is possible to suppress a decrease in coplanarity by setting the holding portion where the formed angle is 90 ° or less on the mounting surface side. Further, if the one surface or the other surface where the angle formed is less than 90 ° is the connecting side to which the conducting wire is connected, the distance from the core portion to the one surface or the other surface can be shortened. In this case, it is possible to reduce the length of the conductive wire from the winding core portion to the connecting portion provided on the first holding portion or the second holding portion on one surface or the other surface. Further, by moving the first holding portion and the second holding portion along the first inclined surface and the second inclined surface, the first holding portion and the second holding portion are expanded by the inclined surface, The one holding portion and the second holding portion can be easily disposed on the first surface and the second surface. Moreover, a connection surface can be arrange | positioned between a 1st clamping part and a 2nd clamping part, without expanding between the 1st clamping part and the 2nd clamping part .

According to the coil component of the third aspect , when the metal terminal is extrapolated to the flange portion, the convex portion engages with the recess portion, so that the positioning of the metal terminal with respect to the flange portion is facilitated. In addition, since the convex portions provided on the first sandwiching surface and the second sandwiching surface are engaged with the recesses formed on one surface and the other surface, the first sandwiching surface and the second sandwiching surface are disposed on the one surface and the other. Since it becomes difficult for the gap between the surfaces to occur, the core is difficult to come off from the metal terminal.

According to the coil component of the fourth aspect , since the angles formed by the first holding part, the second holding part, and the connecting part are acute angles, the effect according to the first aspect is further enhanced, and the first Both the holding portion and the second holding portion can be on the mounting surface side.

According to the coil component of the fifth aspect, by providing the plate-like core, the magnetic permeability as the coil component is increased, and the performance as the common mode filter is further enhanced.

According to the coil component manufacturing method of the sixth aspect, the strong contact between the tip of the metal terminal in the mounting direction and the flange portion is suppressed. In addition, since the first holding portion and the second holding portion slide on the first inclined surface and the second inclined surface and move to one surface and the other surface, the first holding portion and the second holding portion In addition, it is not necessary to apply an external force to expand, and the work process can be simplified.

  A coil component according to an embodiment of the present invention will be described with reference to FIGS. The coil component 1 is a common mode filter used for a high-speed operation signal interface. The dimension is about 4 mm in the longitudinal direction, and as shown in FIG. 1, it is composed of a drum type magnetic core 2, two conducting wires 3 </ b> A and 3 </ b> B, a metal terminal 9, and a metal terminal 10. . The magnetic core 2 is formed by a magnetic powder such as ferrite being compressed and sintered.

  As shown in FIG. 2, the magnetic core 2 is provided with a core part 5 having a substantially rectangular cross section perpendicular to the longitudinal direction, and a pair of flange parts 4, 4 having substantially the same shape provided at both ends in the longitudinal direction of the core part 5. Consists of. As shown in FIG. 2, the core 5 is composed of a top surface 5A, a bottom surface 5F, a side surface 5D, and a side surface 5E. As shown in FIG. 1, two conductors 3A and 3B are formed on the top. It is wound around the outer periphery of the surface 5A, the lower surface 5F, the side surface 5D, and the side surface 5E. Hereinafter, since the flange part 4 has substantially the same shape, unless otherwise specified, only one side will be described. As shown in FIG. 2, the longitudinal direction of the core part 5 is the x-axis direction, and the width of the core part 5 A direction is defined as a y-axis direction, and a direction orthogonal to the x-axis direction and the y-axis direction is defined as a z-axis direction.

  As shown in FIG. 2, the flange portion 4 includes a main body portion 6 which is a portion connected to the core portion 5, a sub-body portion 7 extending from the main body portion 6 in the y-axis direction, and a sub-body. It is composed of a sub barrel portion 8 extending in the direction opposite to the portion 7. The auxiliary body part 7 and the auxiliary body part 8 are configured to be plane-symmetric with respect to the zx plane passing through the width center of the core part 5.

  The main body portion 6 is formed in a substantially rectangular shape having a longitudinal direction in the z-axis direction and a width direction in the y-axis direction and substantially the same width as the core portion 5, and the top surface 5 </ b> A of the core portion 5. A top surface 6A that protrudes further and is substantially parallel to the xy plane, a side surface 6C that is connected to the core portion 5, a side surface 6B that is the opposite surface of the side surface 6C and that is substantially orthogonal to the top surface 6A, and the core portion 5 A bottom surface 6F that protrudes from the bottom surface 5F and faces the top surface 6A that intersects the side surface 6B at an angle of about 87 ° on the zx plane; a side surface 6D that connects the top surface 6A, the bottom surface 6F, the side surface 6B, and the side surface 6C; And a side surface 6E.

  The secondary body portion 7 extends from the side surface 6D in the y-axis direction and is formed in a substantially rectangular parallelepiped shape having the longitudinal direction in the z-axis direction. The side surface 7C is flush with the side surface 6C of the main body portion 6; The lower surface 7F is provided on the same plane as the lower surface 6F. The side surface 7B facing the side surface 7C and substantially parallel to the side surface 6B and intersecting the lower surface 7F and the zx plane at an angle of about 87 ° is provided at a position recessed with respect to the side surface 6B of the main body portion 6. Yes. Position where the top surface 7A intersects the side surface 7B at an angle of about 85 ° on the zx plane at a position facing the lower surface 7F of the sub-body portion 7 and is recessed with respect to the top surface 6A of the main body portion 6 A side surface 7D parallel to the side surface 6D is formed so as to intersect the top surface 7A, the lower surface 7F, the side surface 7B, and the side surface 7C.

  The sub trunk portion 8 is configured symmetrically with the sub trunk portion 7 and extends in the y-axis direction from the side surface 6E, and has a top surface 8A that is one surface, a lower surface 8F that is the other surface, and a side surface 8B that is the connection surface. And a side surface 8C and a side surface 8E. Further, as shown in FIG. 3, a concave portion 7 a and a concave portion 7 f are formed at substantially the center portions of the top surface 7 </ b> A and the bottom surface 7 </ b> F of the sub trunk portion 7, and the top surface 8 </ b> A and the bottom surface 8 </ b> F of the sub trunk portion 8 are formed. Similarly, a recess 8a and a recess 8f are formed.

  A metal terminal 9 to be described later is externally inserted into the sub barrel portion 7 so as to sandwich the top surface 7A and the bottom surface 7F from the side surface 7B side with respect to the top surface 7A and the bottom surface 7F. Accordingly, the direction from the side surface 7B to the side surface 7C is the mounting direction S of the metal terminal 9 (FIG. 3), the first surface where the top surface 7A is sandwiched by the metal terminal 9, and the other surface where the lower surface 7F is also sandwiched. The side surface 7B is a connecting surface facing the metal terminal 9. Similarly, the metal terminal 10 is extrapolated to the auxiliary body portion 8, the direction from the side surface 8B toward the side surface 8C is the mounting direction S ', and the top surface 8A is held between the metal terminal 10 and the first surface, the bottom surface 8F. Is the other surface that is also held, and the side surface 8 </ b> B serves as a connection surface facing the metal terminal 10. These mounting directions S and S 'are directions substantially parallel to the x-axis direction.

  At the point where the top surface 7A and the side surface 7B of the sub trunk portion 7 intersect and the portion where the lower surface 7F and the side surface 7B intersect, the first surface is directed in the direction opposite to the mounting direction S as shown in FIG. The first inclined surface 7G and the second inclined surface 7H are provided in which the distance between the top surface 7A and the lower surface 7F, which is the other surface, gradually decreases. The first inclined surface 7G and the second inclined surface 7H are connected to the top surface 7A and the lower surface 7F, respectively, and intersect the side surface 7B at an angle of about 120 ° on the zx plane.

  On the most upstream side in the mounting direction S of the first inclined surface 7G and the second inclined surface 7H, a first inclined introduction surface 7I connected to the first inclined surface 7G and intersecting the side surface 7B substantially orthogonally, and a second The second inclined introduction surface 7J that is connected to the inclined surface 7H and intersects the side surface 7B substantially orthogonally is provided. Therefore, the portion where the top surface 7A and the side surface 7B intersect is chamfered by the first inclined surface 7G and the first inclined introduction surface 7I, and the portion where the lower surface 7F and the side surface 7B intersect is the second inclined surface 7H. And the second inclined introduction surface 7J is chamfered. Similarly, the first body 8G and the second slope 8H, the first slope introduction face 8I, and the second slope introduction face 8J are also provided in the sub trunk portion 8, and the point where the top face 8A and the side face 8B intersect is as follows. The first inclined surface 8G and the first inclined introduction surface 8I are chamfered, and the portion where the lower surface 8F intersects the side surface 8B is chamfered by the second inclined surface 8H and the second inclined introduction surface 8J.

  A substantially U-shaped metal terminal 9 serving as an electrode is attached to the sub barrel portion 7, and similarly, a metal terminal 10 is attached to the sub barrel portion 8. The metal terminal 9 and the metal terminal 10 also have the same plane-symmetric configuration as the sub barrel portion 7 and the sub barrel portion 8.

  The substantially U-shaped metal terminal 9 includes a first holding portion 9A and a second holding portion 9F that are a pair of substantially U-shaped arm portions, and a connecting portion 9B that connects the pair of arm portions. Composed. The first holding part 9A, the second holding part 9F, and the connecting part 9B are formed by bending one metal plate so that the first holding part 9A is about 85 ° with respect to the connecting part 9B. The second sandwiching portion 9F is bent at an angle of about 87 ° with respect to the connecting portion 9B. Moreover, the convex part 9G (FIG. 4) which protrudes toward the inner side of a substantially U-shape is provided in the substantially U-shaped inner surface which is the 1st clamping surface of 9 A of 1st clamping parts, On the substantially U-shaped inner surface that is the second clamping surface of the second clamping portion 9F, a convex portion 9H that protrudes toward the inner side of the approximately U-shape is provided. The metal terminal 10 is also formed in the same manner as the metal terminal 9, and has a substantially U-shaped inner surface, which is the first holding surface of the first holding portion 10 </ b> A, projecting toward the inside of the approximately U-shape. 10G is provided, and a substantially U-shaped inner surface that is the second holding surface of the second holding portion 10F is provided with a protruding portion 10H that protrudes toward the inner side of the approximately U-shape. ing.

  Further, the first holding portion 9A of the metal terminal 9 is provided with a section 9I from a side portion facing the side surface 6D of the main barrel portion 6 of the first holding portion 9A. The section 9I is bent so as to be in contact with the outer surface of the first holding section 9A at the connecting portion between the section 9I and the first holding section 9A. Further, the width of the second pinching portion 9F and the second holding portion of the connecting portion 9B extends from the first holding portion 9A of the metal terminal 9 to the vicinity of the connecting portion of the connecting portion 9B with the first holding portion 9A. It is formed narrower than the vicinity of the connection point with 9F. Similarly to the metal terminal 9, the metal terminal 10 is also provided with a section 10I and is similarly narrow in width.

  Hereinafter, a process of forming the coil component 1 by attaching the metal terminal 9 and the metal terminal 10 to the magnetic core 2 will be described. Since the shapes of the metal terminal 10 and the sub barrel portion 8 are the same as those of the metal terminal 9 and the sub barrel portion 7 in plane symmetry, the metal terminal 10 is attached in the same process as the metal terminal 9 unless otherwise specified.

  When the metal terminal 9 is attached to the sub barrel portion 7 of the flange portion 4, as shown in FIG. 4, the metal terminal 9 is in a state where the inner surface of the connecting portion 9B and the side surface 7B of the sub barrel portion 7 face each other substantially in parallel. Placed in. In this state, the metal terminal 9 is brought close to the sub barrel portion 7 and the end portions of the first holding portion 9A and the second holding portion 9F are along the top surface 7A and the lower surface 7F, respectively. Extrapolated to

  The top surface 7A and the bottom surface 7F are at an angle of less than 90 ° with respect to the side surface 7B. Moreover, 9 A of 1st clamping parts and the 2nd clamping part 9F which follow these are narrow between 9 A of 1st clamping parts and the 2nd clamping part 9F toward the edge part. On the other hand, the locations where the side surface 7B, the top surface 7A, and the lower surface 7F of the sub trunk portion 7 intersect are the first inclined surface 7G, the first inclined introduction surface 7I, the second inclined surface 7H, and the second inclined introduction, respectively. The surface 7J is chamfered. By this chamfering, the distance in the z-axis direction of the side surface 7B is shorter than the distance between the top surface 7A and the bottom surface 7F. Moreover, the distance between 9A of 1st clamping parts and the 2nd clamping part 9F is formed larger than the distance of the z-axis direction of the side surface 7B. Therefore, at the time of extrapolation, the tips of the first holding portion 9A and the second holding portion 9F abut on these chamfered portions, slide on the first inclined surface 7G and the second inclined surface 7H, and the top surface It is possible to follow along 7A and the lower surface 7F.

  In this state, as shown in FIG. 5, the metal terminal 9 is further extrapolated to come close to the sub barrel 7, and as shown in FIG. 6, the side surface 7 </ b> B of the sub barrel 7 and the inner surface of the connecting portion 9 </ b> B are in contact with each other. Touch. At this time, the convex portion 9G and the concave portion 7a engage with each other, and the convex portion 9H and the concave portion 7f engage with each other. By this engagement, the position of the metal terminal 9 with respect to the sub barrel portion 7 is specified. Thereafter, the inner surface of the first holding portion 9A and the top surface 7A, and the second holding portion 9F and the lower surface 7F are brought into contact with each other to hold the auxiliary trunk portion 7.

  Since the first holding part 9A and the second holding part 9F are each formed in a cantilever shape having a connection point with the connecting part 9B as a fulcrum, the first holding part 9A and the second holding part 9F When holding the sub trunk | drum 7 with the part 9F, it clamps by the bending moment force which makes a connection point with the connection part 9B a fulcrum, respectively. As shown in FIG. 6, for example, the force P generated by the bending moment force in the first holding portion 9 </ b> A acts on the inner side of the metal terminal 9 in the substantially normal direction of the inner surface of the first holding portion 9 </ b> A.

  The first holding portion 9A and the second holding portion 9F are in contact with the top surface 7A and the bottom surface 7F, and the top surface 7A and the bottom surface 7F are opposed to each other without being parallel with the side surface 7B interposed therebetween. Because of the position, the normal direction of the first holding portion 9A is different from the position direction of the second holding portion 9F with respect to the first holding portion 9A. Further, the bending moment force P can be decomposed into a force p1 in the position direction of the second holding portion 9F and a force p2 in a direction orthogonal to the position direction of the second holding portion 9F. In this case, the auxiliary body portion 7 is narrowed by the top surface 7A and the bottom surface 7F between the first holding portion 9A and the second holding portion 9F by the force p1 in the position direction of the second holding portion 9F. Be held. Further, there is a connecting portion 9B in a direction orthogonal to the position direction of the second holding portion 9F of the first holding portion 9A, and is in contact with the side surface 7B. Therefore, the sub trunk | drum 7 is clamped also between 9 A of 1st clamping parts and the connection part 9B with the force p2 to the direction orthogonal to the position direction of the 2nd clamping part 9F. Since the second holding portion 9F has the same shape except that the angle with respect to the first holding portion 9A and the connecting portion 9B is different by about 2 °, the second holding portion 9F is similar to the first holding portion 9A. The sub trunk portion 7 is also sandwiched between 9F and the connecting portion 9B.

  Therefore, the sub barrel portion 7 is sandwiched between the first sandwiching portion 9 </ b> A and the second sandwiching portion 9 </ b> F of the metal terminal 9, and the side surface 7 </ b> B of the sub trunk portion 7 is connected to the connection portion of the metal terminal 9. Pressed and held. Thereby, the retainability of the sub trunk | drum 7 by the metal terminal 9 improves, and the sub trunk | drum 7 becomes difficult to remove | deviate from the metal terminal 9 more.

  After attaching the metal terminal 10 in the same manner as the metal terminal 9, the conductor 3 </ b> A and the conductor 3 </ b> B are wound around the core 5 as shown in FIG. 7. The ends of the wound conducting wire 3A and conducting wire 3B are respectively connected to the metal terminals 9 and the first holding portions 9A and the sections 9I of the metal terminals 9 and the metal terminals 10 and the first narrow portions. The holding portion 10A and the segment 10I are arranged substantially parallel to the x-axis direction at a position where they are connected. Since the top surface 7A intersects the side surface 7B at about 85 °, the side surface 7B intersects the side surface 7C substantially parallel to the side surface 7B at about 95 °. Further, since the top surface 7A is inclined in a direction that sinks from the side surface 7B toward the side surface 7C, the top surface 5A of the core 5 that is the wiring distance of the conductive wire extends to a position where the side surface 7C and the top surface 7A intersect. The distance in the z direction is shorter than when the top surface 7A is substantially orthogonal to the side surface 7B and substantially parallel to the top surface 5A of the core 5A. Therefore, the auxiliary body portion 7 according to the embodiment can make the wiring distance of the conductor shorter than that of the conventional coil component, and at least an acute angle when the conductor extends from the side surface 7C to the top surface 7A. Since the bent portion is not formed, it is easy to wire the conducting wire.

  Thereafter, the conducting wire 3A and the conducting wire 3B are electrically connected to the metal terminal 9 and the metal terminal 10 by arc welding or the like. Then, the section 9I and the section 10I are bent so as to be substantially parallel to the first holding section 9A and the first holding section 10A to protect the connecting portions of the conducting wires 3A and 3B, and the coil component 1 is completed. Thereafter, the plate-shaped core 20 shown in FIG. 2 is fixed to the top surfaces 6A and 6A of the main trunk portions 6 and 6 of the flange portions 4 and 4 by using an adhesive, and the plate-shaped core 20 and the magnetic core 20 are magnetically bonded. A closed magnetic circuit is formed by the core 2. In this case, the top surface 7A and the top surface 8A, which are the connection points of the metal terminal 9 and the metal terminal 10, are in a position recessed from the top surface 6A of the main body 6, and the top surface 6A, the top surface 7A and the top surface A step is formed between the surface 8A. Therefore, when the plate-shaped core 20 is fixed on the top surface 6A, the connecting portion is accommodated in the step, and the plate-shaped core 20 is fixed well without contacting the plate-shaped core 20 and the connecting portion. The

  The coil component 1 is in contact with the mounting surface of the substrate at the second holding portion 9F and the second holding portion 10F. Since the first holding part 9A and the second holding part 9F according to the embodiment are bent and shaped inside a substantially U-shape so as to intersect the connecting part 9B at an acute angle, the magnetic Even if the core 2 becomes larger than a prescribed dimension due to a manufacturing error, the first holding portion 9A and the second holding portion 9F are kept at least at a right angle or inside with respect to the connecting portion 9B. Similarly, the first holding part 10A and the second holding part 10F can be kept at least at right angles to the connecting part 10B or inside.

  When the coil component 1 is mounted on the mounting surface in a state where the second holding portion 9F and the connecting portion 9B intersect at an acute angle, as shown in FIG. 8, the second holding portion 9F is connected to the connecting portion 9B of the second holding portion 9F. It is mounted on the mounting surface 22 on the substrate 21 by solder or the like in the vicinity of the intersecting portion. When the coil component 1 is mounted on the mounting surface with the second holding portion 9F and the connecting portion 9B intersecting at substantially right angles, as shown in FIG. 9, the connecting portion 9B of the second holding portion 9F. Is mounted on the mounting surface 22 on the substrate 21 on the outer surface of the second holding portion 9F including the portion where Therefore, the z-axis direction position of the coil component 1 with respect to the mounting surface is the mounting surface and the second holding portion 9F and the connecting portion 9B intersect each other at an acute angle and at a substantially right angle. If the second sandwiching part 9F is determined by contact with the intersection of the connecting part 9B and the angle formed by the second sandwiching part 9F and the connecting part 9B is about 90 ° or less, the coil with respect to the mounting surface It becomes possible to keep the position of the component 1 substantially constant.

  For example, when the top surface 7A and the lower surface 7F are substantially parallel to each other with a coil component having a longitudinal direction of about 4 mm in the x-axis direction, about 3 mm in the y-axis direction, and about 2 mm in the z-axis direction, While the gap between the mounting surface was about 0.05 mm, in the coil component 1 according to the present embodiment, the gap between the second holding portion 9F and the mounting surface was 0.02 mm or less. It became possible to hold down. By using the coil component 1 according to the present embodiment to reduce the above-described gap, it is possible to reduce backlash during mounting of the coil component 1, fusing errors, etc., and improve coplanarity. .

  As described above, the magnetic core 2 is molded by putting magnetic powder such as ferrite in a mold as a mold and compressing it. When molding the magnetic core 2, a substantially flat mold is used to form the side surface 7B due to the manufacturing problem of the mold, and the first inclined surface is formed on the mold forming the side surface 7B. The magnetic core 2 is molded by bonding a mold for forming 7G or the like. At this time, since the first inclined surface 7G has an angle of about 60 ° with respect to the side surface 7B, the tip of the mold is also 60 °. In general, when an acute mold is used, the acute angle portion at the tip thereof is deformed by pressure during compression, and the service life is reduced compared to other molds. Therefore, the first inclined introduction surface 7I that is substantially orthogonal to the mold that forms at least the side surface 7B is formed at the tip portion to eliminate the acute angle portion, thereby improving the service life of the mold. Similarly, a second inclined introduction surface 7J is provided.

  The coil component according to the present invention is not limited to the above embodiment, and various changes and improvements can be made within the scope of the claims. For example, a shape without the plate-like core 20 may be used as a common mode filter.

The top view of the coil components concerning embodiment. The disassembled perspective view of the coil components concerning embodiment. Sectional drawing of the magnetic core of the coil components concerning embodiment. The side view showing the state before engagement with the sub trunk | drum of the coil components concerning embodiment, and a metal terminal. The side view showing the state in the middle of engagement with the sub trunk | drum and metal terminal of the coil components concerning embodiment. The side view showing the engagement completion state of the sub trunk | drum of the coil component concerning embodiment, and a metal terminal. The side view showing the winding state of the coil components concerning embodiment. The side view of the state which mounted the coil components concerning the embodiment (The state where the 1st holding part and the 2nd holding part are facing each other so that it may mutually approach) on the board | substrate. The side view of the state which mounted the coil components concerning an embodiment (a state where the 1st clamping part and the 2nd clamping part are substantially parallel) mounted on the board | substrate.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Coil components 2 Magnetic core 3A Conductor 3B Conductor 4 Hook
5 Core 5A Top 5D Side 5E Side 5F Bottom
6 Main trunk 6A Top surface 6B Side surface 6C Side surface 6D Side surface 6E Side surface
6F Lower surface 7 Sub trunk 7A Top surface 7B Side surface 7C Side surface 7D Side surface
7F Lower surface 7G First inclined surface 7H Second inclined surface 7I First inclined introduction surface
7J Second inclined introduction surface 7a Concave portion 7f Concave portion 8 Sub trunk 8A Top surface
8B side surface 8C side surface 8E side surface 8F lower surface 8G first inclined surface
8H Second inclined surface 8I First inclined introduction surface 8J Second inclined introduction surface 8a Concave portion
8f Concave portion 9 Metal terminal 9A First holding portion 9B Connecting portion
9F 2nd clamping part 9G Convex part 9H Convex part 9I Section 10 Metal terminal
10A 1st clamping part 10B Connection part 10F 2nd clamping part 10G Convex part
10H convex part 10I section 20 plate core 21 substrate 22 mounting surface

Claims (6)

A winding core portion, and a pair of flange portions each provided at both ends of the winding core portion and having one surface, another surface facing the one surface, and a connecting surface connecting the one surface and the other surface. The core,
A first clamping part having a first clamping surface facing the one surface, a second clamping part having a second clamping surface facing the other surface, the first clamping part and the second clamping part And a connecting portion that faces the connecting surface, and the first holding portion and the second holding portion follow the one surface and the other surface when attached to the flange portion. A metal terminal holding the one surface and the other surface by the first holding surface and the second holding surface;
A conductive wire wound around the winding core and having both ends connected to the metal terminal;
A first inclined surface and a second inclined surface that gradually decrease in distance from each other toward the direction opposite to the mounting direction at the end edge on the upstream side in the mounting direction where the metal terminals on the one surface and the other surface are mounted. An inclined surface is provided, and the connecting surface is disposed upstream of the first inclined surface and the second inclined surface in the mounting direction.
The angle formed by at least one of the one surface or the other surface and the connecting surface is an acute angle ,
The distance from the one surface side end portion of the connecting surface to the other surface side end portion of the connecting surface is configured to be smaller than the distance from the tip end of the first holding portion to the tip end of the second holding portion of the metal terminal. And
The distance from the boundary position between the one surface and the first inclined surface to the boundary position between the other surface and the second inclined surface is such that the tip of the first holding portion of the metal terminal and the tip of the second holding portion And a coil that is configured to be smaller than the distance from the boundary position of the connecting portion to the first holding portion to the boundary position of the second holding portion. parts.   2. The other surface is a portion that comes into contact with the substrate when the coil component is mounted on the substrate, and at least an angle formed by the other surface and the connecting surface is an acute angle. Coil parts.   The concave portion is formed in the one surface and the other surface, and a convex portion that can be engaged with the concave portion is provided in the first sandwiching surface and the second sandwiching surface. The coil component according to any one of claims 1 and 2.   The coil component according to any one of claims 1 to 3, wherein the angle formed by the one surface and the other surface with the connecting surface is an acute angle.   The coil component further includes a substantially rectangular parallelepiped plate-like core, and the plate-like core is fixed across the pair of flanges. The coil component described.   A winding core portion, and a pair of flange portions each provided at both ends of the winding core portion and having one surface, another surface facing the one surface, and a connecting surface connecting the one surface and the other surface. The core,
  A first clamping part having a first clamping surface facing the one surface, a second clamping part having a second clamping surface facing the other surface, the first clamping part and the second clamping part And a connecting portion that faces the connecting surface, and the first holding portion and the second holding portion follow the one surface and the other surface when attached to the flange portion. A metal terminal holding the one surface and the other surface by the first holding surface and the second holding surface;
  A conductive wire wound around the winding core and having both ends connected to the metal terminal, and attached to the end edge on the upstream side in the mounting direction where the metal terminal on the one surface and the other surface is mounted. Are provided with a first inclined surface and a second inclined surface that gradually decrease in distance from each other in the direction opposite to the mounting direction, and the angle formed by the one surface and the other surface with the connecting surface is an acute angle, respectively. The connecting surface is disposed upstream of the first inclined surface and the second inclined surface in the mounting direction, from the one surface side end of the connecting surface to the other surface side end of the connecting surface. Is configured to be smaller than the distance from the tip of the first pinching portion to the tip of the second pinching portion of the metal terminal, and from the boundary position between the one surface and the first inclined surface, The distance to the boundary position with the two inclined surfaces is greater than the distance from the tip of the first holding portion to the tip of the second holding portion of the metal terminal. Together are made to a method of producing a smaller than configured coil component distance to the boundary position between said second holding portion from the boundary position between said first holding portion of the connecting portion,
  Disposing the terminal fitting with respect to the flange so that the connecting surface is located between the tip of the first holding portion and the tip of the second holding portion;
  The front end of the first holding portion and the front end of the second holding portion are brought into contact with the first inclined surface and the second inclined surface, respectively, and are slid on the first inclined surface and the second inclined surface. And a step of moving to the one surface and the other surface.

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