JP2011222637A - Coil component - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a coil component that can reliably reserve a creepage distance.SOLUTION: A coil component 1 comprises a bobbin 20 that includes: a winding drum 21 around which a wire is wound to form a winding section; a terminal table 30 positioned at one end in the axial direction of the winding drum 21; a winding space defined to receive winding of the wire, the winding space comprised of the winding drum 21 and the terminal table 30. A slit 30a is formed in the terminal table 30 and extends from the outer circumference of the terminal table toward the winding drum 21 so as to cross the wire winding direction and penetrate through the winding space. A pin terminal 35 is provided on that side of the terminal table 30 which is axially opposite to the side where the winding space is defined. The wire, penetrating through the slit 30a and led out from the winding space, is connected to the pin terminal 35. A first passage 31a is defined in the slit 30a and the wire is inserted into the first passage 31a. A restriction unit 31a is provided in the slit and restricts the movement, in the direction in which the slit 30a extends, of the wire inserted in the first passage 31a.

Description

  The present invention relates to a coil component.

  2. Description of the Related Art Conventionally, a coil component including a bobbin composed of a winding body portion in which a conducting wire is wound and a winding portion is formed and a terminal block is known. In this coil component, for example, as shown in Patent Document 1, a groove extending in a vertical direction (a direction perpendicular to the mounting surface) is formed in a terminal block, and one end and the other end of a conducting wire are formed from the winding portion. Is led to the terminal through the groove.

JP-A-9-148147

  When the above-described coil component is miniaturized, there arises a problem of ensuring a creepage distance between the above-described one end and the other end and another conductive portion such as a winding portion. In particular, in the case of downsizing and high performance (high voltage), it is necessary to ensure the creepage distance. Therefore, an object of this invention is to provide the coil components which can ensure a creepage distance reliably.

  In order to solve the above-described problems, the present invention provides a winding drum portion in which a winding wire is wound to form a winding portion, and a terminal block provided at one axial end of the winding drum portion and extending in a direction intersecting the axial direction. And a bobbin in which a winding space is formed in which a conducting wire is wound from the winding drum portion and the terminal block, and the terminal block is configured to wind the conductive wire from the outer periphery of the terminal block toward the winding drum portion side. A slit extending through the inside and outside of the winding space is formed so as to intersect the winding direction, and a pin terminal arranged on the side opposite to the winding space in the axial direction of the terminal block is provided, and the conducting wire penetrates the slit. The lead is led out from the winding space and connected to the pin terminal. The slit defines a first passage through which the lead is inserted, and the lead inserted through the first passage restricts movement of the slit in the extending direction. Provided is a coil component having a regulating portion.

  According to such a configuration, since the lead wire is restricted from moving in the slit extending direction by the restricting portion, the lead wire is suppressed from being shifted in the slit extending direction. Therefore, the conductor does not deviate from the first passage, and a certain creepage distance can be obtained by arranging the first passage in a position where an appropriate creepage distance can be obtained in advance.

  In the coil component configured as described above, in the terminal block, between the first passage and the pin terminal, the second passage communicates with the first passage and extends in a direction intersecting the axial direction and is located on the side opposite to the winding space. And a third passage that communicates with the second passage and intersects with the axial direction and the extending direction of the second passage and is located on the side of the anti-winding space, and the conducting wire includes the first passage, the second passage, the second passage, It is preferable to be connected to the pin terminal through three passages.

  According to such a configuration, it is possible to earn a creepage distance in a route in which the conducting wire is routed from the winding portion to the pin terminal.

  The terminal block has a protrusion that is disposed near the third passage and protrudes in a direction intersecting the axial direction. The protrusion is hooked between the third passage and the pin terminal in the axial direction. It is preferable that a stop surface is defined and the conducting wire is led out from the third passage and is hooked on the stop surface and connected to the pin terminal.

  According to such a configuration, it is possible to further increase the creepage distance in the route in which the conducting wire is routed from the winding portion to the pin terminal.

  The restricting portion is preferably provided from a groove formed on the inner surface of the slit so as to intersect the extending direction, and the first passage is preferably defined in the groove.

  According to such a structure, it can suppress more reliably that a conducting wire shifts | deviates to the extension direction of a slit.

  In addition, the winding part is formed by winding a conductive wire on the outer periphery of the winding body part, and the conductive wire extends from one end extended from the winding start position to the winding body part and from the winding end position to the winding body part. The pin terminal has one pin terminal to which one end is connected, and another pin terminal to which the other end is connected, and the slit includes one slit and another slit. The first passage has one first passage formed in one slit and one end inserted, and another second passage formed in the other slit and inserted the other end. The distance from the axial center of the body portion to one first passage is equal to the distance from the axial center of the winding body portion to the position where one end of the conductor layer extends, and from the axial center of the winding body portion to the other first passage. The distance to the passage is preferably configured to be equal to the distance from the axial center of the winding drum section to the position where the other end of the conductor layer extends. Arbitrariness.

  According to such a configuration, since the positions of all the conductive wires extending from the winding portion can be accurately defined, the creepage distances of all the conductive wires can be accurately defined.

  The second passage is preferably positioned on the winding space side with respect to the third passage in the axial direction, and the third passage is positioned on the winding space side with respect to the protrusion in the axial direction. It is preferable.

  Moreover, it is preferable that a latching surface is located in the winding space side rather than the location where the conducting wire of a pin terminal is connected in an axial direction.

  According to such a structure, a conducting wire can be arrange | positioned from the winding space side to an anti-winding space side as it goes to a 2nd channel | path, a 3rd channel | path, and a projection part from a 1st channel | path. Therefore, when wiring a conducting wire from a winding part to a pin terminal, it can wire smoothly.

  According to the coil component of the present invention, it is possible to ensure the creepage distance.

The perspective view of the coil components which concern on embodiment of this invention. The bottom view of the bobbin of the coil components which concern on embodiment of this invention. The front view of the bobbin and conducting wire of the coil components which concern on embodiment of this invention. The side view of the bobbin and conducting wire of the coil components which concern on embodiment of this invention. The rear view of the bobbin and conducting wire of the coil components which concern on embodiment of this invention. The bottom view of the bobbin and conducting wire of the coil components which concern on embodiment of this invention. The cross-sectional schematic diagram which shows the state of the winding part of the coil components which concern on embodiment of this invention. The expanded partial bottom view of the 1st channel | path vicinity position in the bobbin of the coil components which concern on embodiment of this invention. The expanded partial bottom view of the 1st channel | path vicinity position in the bobbin which concerns on the modification of the coil components which concern on embodiment of this invention. The expanded partial bottom view of the 1st channel | path vicinity position in the bobbin of the coil components which concerns on a prior art example.

  Hereinafter, the coil component which concerns on 1st embodiment of this invention is demonstrated based on FIGS. 1-7. A coil component 1 shown in FIG. 1 is a so-called vertical transformer in which an axial direction of a later-described winding portion 50 that is a coil is substantially orthogonal to a mounting surface, and includes a core 10, a bobbin 20, and a winding portion 50. Consists mainly of. In the following description, the direction orthogonal to the mounting surface is defined as the Z-axis direction, and the direction from the mounting surface toward the coil component 1 is defined as the upper side, and the upper side (other surface side) and the lower side (one surface side) are defined. . In addition, a direction from the first terminal block 30 (FIG. 2) described later toward the second terminal block 40 is defined as a Y-axis direction orthogonal to the Z-axis direction, and directions orthogonal to the Z-axis direction and the Y-axis direction are defined as directions. It is defined as the X-axis direction. In the X-axis direction and the Y-axis direction, in the arrows indicating the X-axis direction and the Y-axis direction in the drawing, the origin side of the arrow will be described as one end side, and the tip side of the arrow will be described as the other end side.

  The core 10 is composed of a first core 10A and a second core 10B that are divided into upper and lower parts and have substantially the same E-shape. The first core 10A is inserted into a later-described lower groove 22a (FIG. 4) formed in the bobbin 20, and the E-shaped center is inserted into a later-described through hole 21a (FIG. 2). The second core 10B is inserted into an upper groove 23a (FIG. 4) described later formed in the bobbin 20, and an E-shaped central portion is inserted into a through-hole 21a (FIG. 2) described later. The E-shaped tip of 10A is in contact with the E-shaped tip of the second core 10B. When the first core 10A and the second core 10B come into contact with each other, a closed magnetic path is formed around the winding portion 50.

  The bobbin 20 is made of an insulating resin, and mainly includes a winding drum part 21, a lower collar part 22, and an upper collar part 23 as shown in FIGS. As shown in FIG. 2, the winding drum portion 21 is formed in a cylindrical shape having a central axis (axial center) G parallel to the Z axis, a through hole 21 a is formed inside, and the winding portion 50 is formed on the outer periphery. Is formed.

  As shown in FIG. 4, the lower collar portion 22 is configured in a flat plate shape orthogonal to the Z axis, and is connected to the upper end side of the winding drum portion 21 on the upper surface of the flat plate. The lower collar portion 22 defines a first terminal block 30 and a second terminal block 40 that are respectively positioned on one end side and the other end side in the Y-axis direction. A lower groove 22a, which is a wide groove into which the first core 10A is inserted, is formed so as to extend in the X-axis direction.

  The upper collar portion 23 is configured in a flat plate shape orthogonal to the Z axis, and is connected to the upper end side of the winding drum portion 21 at the lower surface of the flat plate. On the upper surface of the upper flange 23, an upper groove 23a that is a wide groove extending in the X-axis direction and into which the second core 10B is inserted is formed in parallel with the lower groove 22a. The above-described through hole 21a is opened in the lower groove 22a and the upper groove 23a. A winding space in which a winding portion 50 described later is disposed is defined between the upper flange portion 23 and the lower flange portion 22 and around the winding drum portion 21.

  The first terminal block 30 and the second terminal block 40 function as locations that come into contact with the mounting surface when the coil component 1 is placed on a mounting surface (not shown). Further, the upper surface of the first terminal block 30 and the upper surface of the second terminal block 40 are respectively coincident with the upper surface of the lower collar part 22 and are part of the wall that defines the above-described winding space.

  As shown in FIG. 4, the first terminal block 30 is mainly composed of a first terminal block first rib 31, a first terminal block second rib 32, and a first terminal block pin holding portion 33. Yes. As shown in FIG. 3, the first terminal block first rib 31 extends in the X-axis direction in parallel with the XY plane and forms a part of the lower flange portion 22. The winding space is defined. As shown in FIG. 2, the first terminal block first rib 31 has a Y-axis direction other end side (winding body portion 21 side) from an end portion on the Y-axis direction one end side that is an outer periphery of the first terminal block 30. A first slit 30a and a first slit 30b are formed which extend in the direction of the X axis and are arranged in parallel from one end side to the other end side in the X-axis direction and communicate with the inside and outside of the winding space. A groove drilled toward one end side in the X-axis direction is formed at the other end position in the Y-axis direction of the first slit 30a, and a first passage 31a is defined in the groove. A groove drilled toward the other end side in the X-axis direction is formed at the other end position in the Y-axis direction of the first slit 30b, and a first passage 31b is defined in the groove. As shown in FIG. 6, the first slit 30a and the first slit 30b are formed such that the radial distances R2 and R3 from the axis G of the first passages 31a and 31b satisfy R2 <R3. Yes.

  As shown in FIG. 2, the first terminal block second rib 32 is configured to extend in the X-axis direction and bend at the central portion in the X-axis direction so as to overlap the winding drum portion 21. The lower groove 22a (FIG. 4). ). As shown in FIG. 3, the first terminal block second rib 32 is provided with convex portions 30 </ b> A and 30 </ b> B protruding downward on the other end side and one end side in the X-axis direction.

  Further, as shown in FIG. 2, the first terminal block second rib 32 cooperates with the first terminal block pin holding portion 33 (FIG. 4) to define the groove-shaped second passage 32a and the second passage 32b. It is made. The second passage 32a and the second passage 32b extend along the first terminal block second rib 32 to one end side in the X-axis direction and the other end side in the X-axis direction, respectively. It communicates with 31b. The bottom surfaces of the second passage 32a and the second passage 32b are formed from the lower surface of the first terminal block first rib 31 on the side opposite to the winding space. The first terminal block pin holding portion 33 is disposed on one end side in the Y-axis direction of the first terminal block second rib 32 as shown in FIG. 4, and as shown in FIG. A first pin base 33A that cooperates with the two ribs 32 to define the second passage 32a, and a first pin base 33B that cooperates with the first terminal block second ribs 32 to define the second passage 32b; It is composed of The first pin base portion 33A and the first pin base portion 33B are arranged in parallel from one end side to the other end side in the X-axis direction, and the bottom surface of the second passage 32a and the bottom surface of the second passage 32b (first terminal), respectively. The lower surface of the base first rib 31 protrudes downward in the Z-axis direction. As shown in FIG. 2, the one end side edge of the first pin base portion 33A and the other end side edge of the first pin base portion 33B respectively define a third passage 33a and a third passage 33b extending in the Y-axis direction. ing. The third passages 33a and 33b communicate with the second passage 32a and the second passage 32b on the other end side in the Y-axis direction, respectively, and extend to the end surface on the one end side in the Y-axis direction of the first terminal block pin holding portion 33. Similar to the second passage 32a and the second passage 32b, the bottom surface is constituted by the lower surface of the first terminal block first rib 31 on the side opposite to the winding space.

  At the lower end surface positions of the first pin base portion 33A and the first pin base portion 33B and in the vicinity of the third passage 33a and the third passage 33b, holding holes capable of holding the pin terminals are formed, respectively, as shown in FIG. As shown, first pin terminals 35A and first pin terminals 35B are provided in the holding holes of the first pin base portion 33A and the first first pin base portion 33B, respectively. As shown in FIG. 3, the first pin terminal 35 </ b> A and the first pin terminal 35 </ b> B have both ends of a secondary conducting wire 53 described later in the vicinity of the mounting position on the first pin base 33 </ b> A and the first pin base 33 </ b> B, respectively. A first binding portion 35C and a first binding portion 35D that are bound and soldered are defined.

  As shown in FIG. 4, a first terminal block latching portion 34 protruding toward one end side in the Y-axis direction is provided on the end surface on one end side in the Y-axis direction of the first terminal block pin holding portion 33. As shown in FIG. 2, the first terminal block latching portion 34 is provided as a first terminal block latching portion 34A and a first terminal block latching portion 34B on the first pin base portion 33A and the first first pin base portion 33B. As shown in FIG. 3, the first terminal block latching portion 34A and the first terminal block latching portion 34B are arranged along the Y axis direction one end side end surface of the third passage 33a and the third passage 33b. Has been.

  A hooking surface 34C and a hooking surface 34D are defined on the upper surfaces of the first terminal block hooking portion 34A and the first terminal block hooking portion 34B, respectively. The retaining surface 34C and the retaining surface 34D are located on the same plane orthogonal to the Z-axis direction, and as shown in FIG. 3, the first terminal block that defines the third passage 33a and the third passage 33b. It is located on the lower side in the Z-axis direction from the lower surface of the first rib 31. Therefore, the third passage 33a and the third passage 33b are located above the first terminal block latching portion 34A and the first terminal block latching portion 34B in the Z-axis direction.

  As shown in FIG. 4, the second terminal block 40 is mainly composed of a second terminal block first rib 41, a second terminal block second rib 42, and a second terminal block pin holding portion 43. Yes. As shown in FIG. 5, the second terminal block first rib 41 extends parallel to the XY plane and extends in the X-axis direction, and forms a part of the lower flange portion 22 together with the first terminal block first rib 31. The above-described winding space is defined together with the winding drum portion 21. As shown in FIG. 2, the second terminal block first rib 41 has one end side in the Y-axis direction (winding body portion 21 side) from the end on the other end side in the Y-axis direction that is the outer periphery of the second terminal block 40. Second slits 40a, 40b, and 40c that extend in the direction of the X-axis and extend in parallel from the other end side in the X-axis direction to the one end side and penetrate the inside and outside of the winding space are formed. A first passage 41a is defined at one end position of the second slit 40a in the Y-axis direction. At one end position in the Y-axis direction of the second slit 40b, grooves extending toward the other end side and one end side in the X-axis direction are formed, and the grooves on the other end side and the one end side are respectively formed. A first passage 41b and a first passage 41c are defined. A groove extending toward one end side in the X-axis direction is formed at one end position in the Y-axis direction of the second slit 40c, and a first passage 41d is defined in the groove. As shown in FIG. 6, the second slits 40a, 40b, and 40c have a radial distance R5 from the axis G of the first passage 41a, a radial distance R1 from the axis G of the first passages 41b and 41c, A radial distance R4 from the axis G of the first passage 41d is formed to satisfy R1 <R2 <R3 <R4 <R5.

  As shown in FIG. 2, the second terminal block second rib 42 is configured to extend in the X-axis direction and bend at the central portion in the X-axis direction so as to overlap the winding body portion 21. Together with the second rib 32, a lower groove 22a (FIG. 4) is defined. As shown in FIG. 5, the second terminal block second rib 42 is provided with convex portions 40 </ b> A and 40 </ b> B projecting downward on the other end side and one end side in the X-axis direction. These convex portions 40A and 40B become contact portions with a mounting surface (not shown) of the coil component 1 in cooperation with the convex portions 30A and 30B.

  Moreover, the second terminal block second rib 42 defines groove-shaped second passages 42a to 42d in cooperation with the second terminal block pin holding portion 43 (FIG. 4) as shown in FIG. Yes. The second passages 42a to 42d are formed along the second terminal block second rib 42 and arranged in a substantially vertical line from the other end side in the X-axis direction to the one end side. The second passage 42a communicates with the first passage 41a and extends from the portion communicating with the first passage 41a to the other end side in the X-axis direction. The second passage 42b communicates with the first passage 41b and extends from the portion communicating with the first passage 41b to the other end side in the X-axis direction. The second passage 42c communicates with the first passage 41c and extends from the portion communicating with the first passage 41c to one end side in the X-axis direction. The second passage 42d communicates with the first passage 41d, and extends from the portion communicating with the first passage 41d to one end side in the X-axis direction. The bottom surfaces of the second passages 42a to 42d are formed from the lower surface of the second terminal block first rib 41 on the side opposite to the winding space.

  The second terminal block pin holding portion 43 is disposed on the other end side in the Y-axis direction of the second terminal block second rib 42 as shown in FIG. 4, and as shown in FIG. A second pin base 43A that cooperates with the second rib 42 to define the second passage 42a, and a second pin base 43B that cooperates with the second terminal block second rib 42 to define the second passage 42b. A second pin base 43C that defines the second passage 42c in cooperation with the second terminal block second rib 42, and a second passage 42d that cooperates with the second terminal block second rib 42. And a second pin base portion 43D. The second pin bases 43 </ b> A to 43 </ b> D are arranged in parallel from the other end side in the X-axis direction to the other end side, and the bottom surfaces of the second passages 42 a to 42 d (the lower surfaces of the second terminal block first ribs 41), respectively. ) Protrudes downward in the Z-axis direction. As shown in FIG. 2, the other end side edge of the second pin base 43A, the other end side edge of the second pin base 43B, the one end side edge of the second pin base 43C, and the second pin base 43D. Are formed with third passages 43a to 43d extending in the Y-axis direction. The third passages 43a to 43d communicate with the second passages 42a to 42d on one end side in the Y axis direction, respectively, and to the other end side end surface in the Y axis direction of the second terminal block pin holding portion 43 on the other end side in the Y axis direction. Like the second passages 42 a to 42 d, the bottom surface is constituted by the lower surface of the second terminal block first rib 41 on the side opposite to the winding space.

  A holding hole capable of holding a pin terminal is formed at the lower end face of each of the second pin bases 43A to 43D and in the vicinity of the third passages 43a to 43d. As shown in FIG. Second pin terminals 45A to 45D are provided in the holding holes 43A to 43D, respectively. As shown in FIG. 5, the second pin terminal 45A and the second pin terminal 45D have both ends of a secondary conductor 54 described later in the vicinity of the mounting location on the second pin base 43A and the second pin base 43D, respectively. A first binding portion 45E and a first binding portion 45H to be bound and soldered are defined. Also, the second pin terminal 45B and the second pin terminal 45C are soldered with both ends of a primary conductor 51 to be described later tangled in the vicinity of the mounting locations on the second pin base 43B and the second pin base 43C. One binding portion 45F and a first binding portion 45G are defined.

  As shown in FIG. 4, a second terminal block latching portion 44 that protrudes toward one end side in the Y-axis direction is provided on the end surface on one end side in the Y-axis direction of the second terminal block pin holding portion 43. As shown in FIG. 2, the second terminal block latching portions 44 are provided as second terminal block latching portions 44A to 44D on the second pin base portions 43A to 43D, respectively, and the second terminal block latching portions 44A. -2nd terminal block latching | locking part 44D is arrange | positioned along the Y-axis direction other end side end surface of 3rd channel | path 43a-43d, respectively, as FIG. 5 shows.

  Engaging surfaces 44E to 44H are defined on the upper surfaces in the Z-axis direction of the second terminal block retaining portions 44A to 44D, respectively. The latching surfaces 44E to 44H are located on the same plane perpendicular to the Z-axis direction, and are located below the lower surface of the second terminal block first rib 41 defining the third passages 43a to 43d in the Z-axis direction. is doing. Therefore, the third passages 43a to 43d are located above the second terminal block retaining portions 44A to 44D in the Z-axis direction.

  As shown in FIG. 7, the winding portion 50 is configured by winding a primary conducting wire 51, a secondary conducting wire 53, and a secondary conducting wire 54 around the winding drum portion 21 so as to form layers. ing. Further, an insulating tape 50A for insulating between the conductive wires is wound around the respective layers and the outermost periphery of the winding portion 50. Each of the primary conductive wire 51 and the secondary conductive wires 53 and 54 is a coated conductive wire configured by twisting a plurality of fine wires coated with an insulator such as enamel as a stranded wire.

  As shown in FIG. 7, the primary conductor 51 is wound around the winding drum portion 21 so that the distance from the axis G to the center of the layer of the primary conductor 51 in the radial direction is R1. As shown in FIG. 6, one end 51 </ b> A extending from the winding portion 50 (FIG. 1) of the primary conductor 51 passes through the first passage 41 c and is an anti-winding space from the winding space. After being guided to the lower surface side of the lower collar portion 22 (the lower surface side of the second terminal block 40) and hung from the first passage 41c via the second passage 42c and the third passage 43c to the retaining surface 44G (FIG. 5), The second pin terminal 45C is entangled and soldered to the entangled portion 45G. Similarly, the other end 51B penetrates the first passage 41b and is hooked on the retaining surface 44F (FIG. 5) via the second passage 42b and the third passage 43b, and then the second pin terminal 45B is bound. It is entangled with the part 45F and soldered.

  As shown in FIG. 7, the secondary conducting wire 53 is wound around the insulating tape 50 </ b> A wound on the primary conducting wire 51 with a distance R <b> 2 from the axis G to the winding start position. It is wound so that the distance to the end position is R3. As shown in FIG. 6, one end portion 53 </ b> A extending from the winding portion 50 of the secondary conducting wire 53 penetrates the first passage 31 b and is a lower collar portion 22 that is an anti-winding space from the winding space. After being guided to the lower surface side (the lower surface side of the first terminal block 30) and hooked on the retaining surface 34D (FIG. 3) from the first passage 31b through the second passage 32b and the third passage 33b, the first pin terminal It is entangled and soldered to the linking portion 35D of 35B. Similarly, the other end portion 53B penetrates the first passage 31a and is hooked on the retaining surface 34C (FIG. 3) via the second passage 32a and the third passage 33a, and then the first pin terminal 35A is bound. It is wound around the part 35C and soldered.

  As shown in FIG. 7, the secondary conducting wire 54 is wound around the insulating tape 50A wound around the secondary conducting wire 53 with a distance R4 from the axis G to the winding start position. It is wound so that the distance to the end position is R5. As shown in FIG. 6, one end portion 54 </ b> A extending from the winding portion 50 of the secondary conducting wire 54 passes through the first passage 41 d, and the lower collar portion 22 that is an anti-winding space from the winding space. After being guided to the lower surface side (the lower surface side of the second terminal block 40) and hooked on the hooking surface 44H (FIG. 5) from the first passage 41d through the second passage 42d and the third passage 43d, the second pin terminal It is entangled and soldered to the 45D binding part 45H. Similarly, the other end portion 54B penetrates the first passage 41a and is hooked on the retaining surface 44E (FIG. 5) via the second passage 42a and the third passage 43a, and then the second pin terminal 45A is bound. It is entangled with the part 45E and soldered.

  The distance from the axial center G where one end and the other end of each of the primary conducting wire 51, the secondary conducting wire 53, and the secondary conducting wire 54 are extended is the first passage 31a through which the one end and the other end are inserted. The distance from the axial center G of 31b and 41a to 41d coincides. Therefore, when one end and the other end of each conducting wire are pulled out from the winding part 50 and inserted into each first passage, each one end and the other end are pulled out in the Z-axis direction orthogonal to the radial direction around the axis G. be able to. By pulling out the one end and the other end from the winding part 50 in this way, the drawn one end and the other end are suppressed from coming close to other conductors forming the winding part 50, and the one end and the other drawn out are suppressed. The creepage distance from the end to the winding part 50 can be reliably maintained.

  As shown in FIG. 2, the first passages 31a, 31b, 41b to 41d other than the first passage 41a are all provided from a groove formed in the slit. As a representative example, as shown in FIG. 8, the other end 53B of the secondary conducting wire 53 is inserted through the first passage 31a. The secondary conducting wire penetrating the first passage 31a passes through the second passage 32a intersecting the extending direction of the first slit 30a, is parallel to the first slit 30a, and is on the opening side (one end side in the Y-axis direction). ) Is routed in the third passage 33a. By wiring the other end portion 53B in this way, a force that moves to the opening side in the extending direction of the first slit 30a is also applied to the other end portion 53B penetrating the first passage 31a. However, since the groove in which the first passage 31a is defined is formed so as to intersect the extending direction of the first slit 30a, the inner surface of this groove acts as a restricting portion that restricts the movement of the other end portion 53B. Then, the other end 53B is restrained from moving to the opening side of the first slit 30a. By suppressing this movement, the other end portion 53B drawn out from the winding portion 50 is suppressed from approaching the secondary conducting wire 54 positioned on the outer periphery of the secondary conducting wire 53 in the winding portion 50. The creeping distance between the other end portion 53 </ b> B of the secondary conductor 53 and the secondary conductor 54 constituting the winding portion 50 can be reliably maintained.

  Moreover, since the secondary conducting wire 53 is composed of a twisted wire having a plurality of core wires, like the primary conducting wire 51 and the secondary conducting wire 54, the core wire follows the inside of the first passage 31a and the like as compared with one conducting wire. The property is excellent. However, if the followability is excellent, for example, the other end 53B may be crushed at the corner portion that becomes the boundary between the first passage 31a and the second passage 32a and expand in the extending direction of the first slit 30a. Specifically, as a conventional example, a case is assumed in which the first passage is defined not at the groove but at the deepest part of the slit as shown in FIG. In this configuration, the other end 153 </ b> B drawn from the first passage 131 a to the second passage 132 a extends along the inner surface of the slit 130 a, and part of the other end 153 </ b> B is located on the secondary conductor 154 located on the outer periphery of the secondary conductor 153. Proximity. On the other hand, in the present embodiment, as shown in FIG. 8, the first passage 31a is defined in the groove, and the movement of the first slit 30a in the extending direction is restricted by this groove. Therefore, the other end portion 53B is not crushed and expanded as in the conventional example of FIG. 10, and therefore, the proximity of the secondary conducting wire 154 is also suppressed and a creepage distance can be secured.

  Note that the second slit 40a in which the first passage 41a is defined does not include a groove, but the other end portion 54B of the secondary conducting wire 54 penetrating the first passage 41a extends from the outermost layer of the winding portion 50. Since it is drawn out, even if it is in the extending direction of the second slit 40a in the first passage 41a and moves to the opening side, there is no need to consider the creepage distance because there is no adjacent conducting wire, etc. It has a configuration that does not have a groove.

  As described above, the primary conducting wire 51 and the secondary conducting wires 53 and 54 include the first passages 31a, 31b and 41a to 41d extending in parallel with the Z-axis direction and the second passages 32a, 32b and 42a to 42d extending in the X-axis direction. And after passing through the third passages 33a, 33b, 43a to 43d extending in the Y-axis direction, they are further hung on the first terminal block retaining portions 34, 44, and the first binding portions 35C, 35D and the second binding portions, respectively. Soldered at the portions 45E to 45H. Soldering is performed by immersing the first pin terminals 35A and 35B and the second pin terminals 45A to 45D in a bath in which molten solder is stored. There is a possibility that capillarity may enter the gaps between the primary conducting wire 51 and the secondary conducting wires 53 and 54 from the first binding portions 35C and 35D and the second binding portions 45E to 45H toward the winding portion 50. However, the path from the winding part 50 where the primary conducting wire 51 and the secondary conducting wires 53 and 54 are arranged to the first binding parts 35C and 35D and the second binding parts 45E to 45H is the first passage to the third. Since it is long with the passage, even if the solder adheres to the binding portion of the primary conductor 51 and the secondary conductors 53 and 54, the solder of the primary conductor 51 and the secondary conductors 53 and 54 adheres from the winding portion 50. The creepage distance to the location can be ensured, and the occurrence of insulation failure can be suppressed.

  As described above, the first passage, the second passage, and the third passage are formed in directions parallel to the Z-axis direction, the X-axis direction, and the Y-axis direction, respectively. Therefore, even if the coil component 1 is compact, the path length of the first passage to the third passage can be increased, and the creepage distance can be increased.

  The coil component according to the present invention is not limited to the above-described embodiment, and various improvements and modifications can be made within the scope described in the claims. For example, in the above-described embodiment, the bottom surfaces of the second passage and the third passage are both arranged on the same plane as the lower surface of the first rib. You may arrange | position below a bottom face. According to such a configuration, it is easy to work when the conductive wire is routed from the second passage to the third passage and then is hung on the retaining surface, and productivity can be increased.

  Further, in the present embodiment, as a restricting portion for restricting movement of the conducting wire inserted into the slit in the slit extending direction, a groove formed in a direction intersecting the slit extending direction is provided, and this groove Although the first passage is defined inside, the present invention is not limited to this, and as shown in FIG. 9, for example, a protrusion 231A that intersects with the extending direction of the first slit 230a is provided on the inner periphery of the first slit 230a as shown in FIG. The first passage 231a may be defined in the vicinity of the protrusion 231A in the first slit 230a and on the deepest side of the protrusion 231A. With such a configuration, the protrusion 231A restricts the lead wire 253B of the first passage 231a from moving in the slit extending direction, and the lead wire position can be accurately defined similarly to the groove in the present embodiment. .

1. Coil parts 10. Core 10A. First core 10B. Second core 20. Bobbin 21. Winding body 21a. Through hole 22. Lower collar 22a鍔 part 23a ··· upper groove 30 · · first terminal block 30A, 30B · · convex portion 30a, 30b · · first slit 31 · · first terminal block first rib 31a, 31b · · first passage 32 · · · One terminal block second rib 32a, 32b, second passage 33, first terminal block pin holding portion 33A, 33B, first pin base 33a, 33b, third passage 34, first terminal block latching Part 34A, 34B ··· First terminal block latching part 34C, 34D · · Holding surface 35A, 35B · · First pin terminal 35C, 35D · · Tying part 40 · · Second terminal block 40A, 40B · · · Convex portions 40a, 40b, 40c ··· second slit 41 ··· second terminal block First rib 41a, 41b, 41c, 41d ··· First passage 42 ·· Second terminal block second rib 42a, 42b, 42c, 42d ··· Second passage 43 ·· Second terminal block pin holding portion 43A, 43B 43C, 43D, second pin base portions 43a, 43b, 43c, 43d, third passage 44, second terminal block latching portions 44A, 44B, 44C, 44D, second terminal block latching portion 44E, 44F, 44G, 44H ..Hanging surfaces 45A, 45B, 45C, 45D ..Second pin terminals 45E, 45F, 45G, 45H ..Binding part 50..Winding part 50A..Insulating tape 51..Primary Conductor 51A ··· One end 51B · · Other end 53 · · Secondary lead 53A · · One end 53B · · Other end 54 · · Secondary lead 54A · · One end 54B · · Other end

Claims (8)

A winding drum portion in which a conductive wire is wound to form a winding portion; and a terminal block provided at one axial end of the winding drum portion and extending in a direction crossing the axial direction, and the winding drum portion; A bobbin having a winding space in which a conducting wire is wound from the terminal block;
The terminal block is formed with a slit extending from the outer periphery of the terminal block toward the winding body portion so as to intersect the winding direction of the conducting wire and penetrating the inside and outside of the winding space. A pin terminal arranged on the side of the winding space in the axial direction of the table is provided;
The conducting wire is led out from the winding space through the slit and connected to the pin terminal;
The slit has a first passage through which the conducting wire is inserted, and has a restricting portion that restricts the movement of the conducting wire inserted through the first passage in the extending direction of the slit. Coil parts. A second passage located between the first passage and the pin terminal in the terminal block, the second passage communicating with the first passage and extending in a direction crossing the axial direction, and located on the side of the non-winding space; A third passage that communicates with the second passage and intersects with the axial direction and the extending direction of the second passage and is located on the side of the anti-winding space;
2. The coil component according to claim 1, wherein the conductive wire is connected to the pin terminal through the first passage, the second passage, and the third passage. The terminal block has a protrusion that is arranged in the vicinity of the third passage and protrudes in a direction intersecting the axial direction.
A hooking surface located between the third passage and the pin terminal is defined in the projection in the axial direction.
The coil component according to claim 2, wherein the conductive wire is led out from the third passage and is hooked on the hooking surface to be connected to the pin terminal.   The said restriction | limiting part is provided from the groove | channel formed so that it might cross | intersect this extension direction in this slit inner surface, and this 1st channel | path is prescribed | regulated in this groove | channel. The coil component according to any one of 3 above. The winding portion is formed by winding the conductive wire on the outer periphery of the winding drum portion,
The conducting wire has one end extended from the winding start position to the winding drum and the other end extended from the winding end position to the winding drum.
The pin terminal has one pin terminal to which the one end is connected and another pin terminal to which the other end is connected,
The slit has one slit and another slit,
The first passage has one first passage formed in the one slit and the one end inserted therethrough, and another second passage formed in the other slit and the other end inserted therethrough,
The distance from the axial center of the winding drum portion to the first first passage is equal to the distance from the axial center of the winding drum portion to the position where the one end of the conductor layer extends, The distance from the axial center to the other first passage is configured to be equal to the distance from the axial center of the winding drum section to the position where the other end of the conductor layer extends. The coil component according to any one of claims 1 to 4, wherein the coil component is characterized.   The coil component according to claim 2, wherein the second passage is located closer to the winding space than the third passage in the axial direction.   4. The coil component according to claim 3, wherein the third passage is located closer to the winding space than the protrusion in the axial direction.   4. The coil component according to claim 3, wherein the hooking surface is located on the winding space side in the axial direction with respect to a portion where the lead wire of the pin terminal is connected. 5.

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