JP2011216807A - Coil component - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a coil component that is increased in creepage distance to suppress a deterioration in performance.SOLUTION: The coil component has a bobbin 20 with a terminal base 40 provided at one Z-axial end of a winding part 50 wound with a conductor, wherein the terminal base 40 has a second pin terminal 45A with an entwining part where an end of the conductor is entwined on one surface side and the winding part 50 at the other surface side, includes a first passage 41a made open on the other surface and extended in a direction substantially parallel to an axial direction, a second passage 42a communicating with the first passage 41a and extended in a direction crossing the axial direction, and a third passage 43a communicating with the second passage 42a and crossing the axial direction and the extending direction of the second passage 42a, and also has a projection part, having a lock surface defined and protruding in a direction crossing the axial direction, at an opening position of the third passage 43a, and the conductor passes through the first passage 41a, second passage 42a, and third passage 43a from the winding part 50 and is locked to the lock surface to be entwined to the entwining part.

Description

  The present invention relates to a coil component.

  Conventionally, a coil component including a bobbin composed of a winding part and a terminal block has been 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 the terminal passes through the groove from the winding portion to the terminal. Lead wire is led.

JP 2006-294872 A

  In the coil component as described above, a terminal in which a conducting wire is entangled in a molten solder bath is immersed to electrically connect the terminal and the conducting wire. At this time, due to the heat of the solder, there was a case where the coating of the conductive wire was broken to the inside of the above-mentioned groove in the middle of the drawing of the conductive wire. In this case, the creepage distance could not be earned, and there was a risk of poor insulation. Particularly in recent years, coil parts have become smaller and higher performance (higher voltage), so it has been an important problem to ensure the creepage distance. Therefore, an object of this invention is to provide the coil components which can earn a creepage distance even if it is small, and suppressed the performance fall.

  In order to solve the above-mentioned problems, the present invention includes a bobbin having a winding part around which a conducting wire is wound and a terminal block provided at one end in the axial direction of the winding part, and the terminal block has a conducting wire on one side. A pin terminal having a binding portion with which an end of the winding portion is wound is provided, and a winding portion is arranged on the other surface side so that an axial direction is parallel to a direction from one surface to the other surface, and an opening is formed on the other surface. A first passage extending in a direction substantially parallel to the axial direction, a second passage communicating with the first passage and extending in a direction intersecting the axial direction and positioned on one side, and a second passage, A third passage is formed which communicates and intersects the axial direction and the extending direction of the second passage, opens in the vicinity of the pin terminal and is located on one side, and in a direction intersecting the axial direction at the opening position of the third passage. The protrusion has a protruding portion, and a hooking surface located between the third passage and the binding portion is defined in the axial direction in the protruding portion. Provides a first path from the winding portion, a second passage, a coil component that is tied to the tied part hooked on the hooking surface through the third passage.

  According to such a structure, since the distance from a winding part to a binding part can be earned, a creeping distance can be taken long. In addition, since the first passage, the second passage, and the third passage intersect each other, corners can be formed between the first passage and the second passage, and between the second passage and the third passage, A conducting wire can be hooked on this corner. Thereby, it can suppress that a conducting wire remove | deviates from a pin terminal in the state before connecting and soldering the conducting wire from a winding part to a pin terminal.

  In the coil component having the above-described configuration, it is preferable that the second passage is located on the other side of the third passage in the axial direction.

  Moreover, it is preferable that the 3rd channel | path is located in an other surface side rather than a projection part in an axial direction.

  According to such a structure, a conductor can be arrange | positioned from the other surface side to one surface 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 earn a creepage distance and suppress performance degradation.

The perspective view 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 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 circuit diagram of the coil components which concern on embodiment of this invention. The perspective view which concerns on the modification of the coil components which concern on embodiment of this invention. The bottom view of the bobbin which concerns on the modification of the coil components which concern on embodiment of this invention. The bottom view of the bobbin which concerns on the modification of the coil components which concern on embodiment of this invention, and conducting wire.

  Hereinafter, a coil component according to an embodiment of the present invention will be described with reference to FIGS. 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 coil component 1 toward the mounting surface is defined as the downward direction, the Z-axis direction lower side (one surface side), and the improvement side (other surface side). Define. A direction from the first terminal block 30 to the second terminal block 40 described later is defined as a Y-axis direction orthogonal to the Z-axis direction, and a direction orthogonal to each of the axial direction and the Y-axis direction is defined as an X-axis direction. To do. 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. In a state where the first core 10 </ b> A and the second core 10 </ b> B are in contact with each other, a tape is wound around the outer periphery to constitute the core 10, and 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. The winding drum part 21 is configured in an oval cylindrical shape in the axial direction parallel to the Z-axis direction. The through hole 21a is formed inside, and the winding part 50 is formed on the outer periphery.

  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. A first terminal block 30 and a second terminal block 40 are defined on the lower surface of the lower collar portion 22 respectively on one end side and the other end side in the Y-axis direction. 40, a lower groove 22a that is a wide groove into which the first core 10A is inserted is formed to extend in the X-axis direction.

  As shown in FIG. 4, 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 on 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.

  As described above, the first terminal block 30 and the second terminal block 40 function as locations that contact the mounting surface when the coil component 1 is placed on the 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 mainly includes a first rib 31, a second rib 32, and a pin holding portion 33. As shown in FIG. 3, the first rib 31 extends in the X-axis direction to form a part of the lower collar portion 22, and together with the winding body portion 21, the above-described winding space is defined. In the first rib 31, groove-shaped passages 31 a to 31 e extending in the Z-axis direction are formed at the end on one end side in the Y-axis direction. The passages 31a to 31e are formed at substantially equal intervals from one end side to the other end side in the X-axis direction at a substantially central position in the X-axis direction of the first rib 31.

  As shown in FIGS. 2 and 4, the second rib 32 extends in the X-axis direction and defines a lower groove 22 a. As shown in FIG. 3, the second rib 32 is provided with convex portions 30 </ b> A and 30 </ b> B projecting downward on one end side and the other end side in the X-axis direction. These convex portions 30A and 30B serve as contact portions with a mounting surface (not shown).

  As shown in FIG. 4, the pin holding portion 33 is configured to protrude from an intermediate position of the second rib 32 in the Z-axis direction toward one end side in the Y-axis direction, and as shown in FIG. It extends in the axial direction. A plurality of groove-shaped passages 33a to 33e extending in the Z-axis direction are arranged at substantially equal intervals from one end side to the other end side in the X-axis direction at a portion protruding toward one end side in the Y-axis direction in the pin holding portion 33. The pin bases 33A to 33F are defined in the regions separated by the plurality of passages 33a to 33e, respectively. At the lower end surface positions of the pin base portions 33A to 33F, holding holes that can hold the pin terminals are formed, respectively, and as shown in FIG. 2, the pin base portions 33A, 33B, 33D, and 33F each have a first pin. Terminals 34A, 34B, 34D, and 34F are provided. The first pin terminals 34A, 34B, 34D, and 34F are entangled in which both ends of primary conductors 51 and 52, which will be described later, are entangled and soldered in the vicinity of the mounting positions on the pin base portions 33A, 33B, 33D, and 33F. The parts 34G, 34H, 34J, and 34L are defined.

  As shown in FIG. 4, the second terminal block 40 mainly includes a first rib 41, a second rib 42, and a pin holding portion 43. As shown in FIG. 5, the first rib 41 is separated into the other end side in the X-axis direction and one end side, and the first rib 41 is configured as a mirror image with the center position in the X-axis direction of the first rib 41 as the center. It is composed of one rib 41A and one end side first rib 41B. The other end-side first rib 41A is configured such that a cross section perpendicular to the Y-axis is substantially L-shaped, and a substantially L-shaped piece extends in the X-axis direction so that a part of the lower collar portion 22 is formed. The above-described winding space is defined together with the winding drum portion 21. The other piece of the substantially L shape of the first rib 41A on the other end side extends downward in the vicinity of the center position in the X-axis direction and substantially parallel to the Z-axis direction. The one end side first rib 41 </ b> B is also formed in a substantially L shape, and a substantially L-shaped piece forms a part of the lower collar portion 22, and together with the winding body portion 21, the above-described winding space is defined. Yes. The other substantially L-shaped piece of the first-side first rib 41B extends downward in the vicinity of the above-described intermediate position in the X-axis direction and substantially parallel to the Z-axis direction. Between the other end side first rib 41A and the one end side first rib 41B, a first passage 41a extending substantially parallel to the Z axis direction is formed at the above-mentioned intermediate position in the X axis direction. The opening on the upper side in the Z-axis direction of the first passage 41 a is formed on a surface (other surface) that defines the above-described winding space of the first rib 41. Further, the lower end portions in the Z-axis direction of the other end side first rib 41A and the one end side first rib 41B define third passages 43b and 43c described later in cooperation with the pin holding portion 43.

  As shown in FIGS. 2 and 4, the second rib 42 is configured to extend in the X-axis direction, and defines the lower groove 22 a. As shown in FIG. 5, the 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.

  As shown in FIG. 2, the second rib 42 cooperates with the pin holding portion 43 to define a groove-like one end side second passage 42a and the other end side second passage 42b. The one end side second passage 42a and the other end side second passage 42b extend in parallel with the X axis direction along the second rib 42, and the first rib 41a and the second passage 42 respectively at the center position in the X axis direction. It communicates and is located on one end side and the other end side in the X-axis direction with the first passage 41a interposed therebetween. Further, in the one end side second passage 42a and the other end side second passage 42b, one end side second passage bottom surface 42A and the other end side second passage bottom surface 42B which are the bottom surfaces of the respective grooves are defined. The one end side second passage bottom surface 42A and the other end side second passage bottom surface 42B are arranged at the same position in the Z-axis direction.

  As shown in FIG. 4, the pin holding portion 43 is disposed on the other end side in the Y-axis direction of the second rib 42 via the one end-side second passage 42 a or the other end-side second passage 42 b. It protrudes downward in the Z-axis direction from the two-passage bottom surface 42A and the other-end-side second passage bottom surface 42B, and extends in the X-axis direction parallel to the second rib 42 as shown in FIG. A plurality of groove-shaped third passages 43a to 43d extending in the Y-axis direction are provided at substantially equal intervals from the other end side to the one end side in the X-axis direction at the portion of the pin holding portion 43 that protrudes downward in the Z-axis direction. It is formed side by side. The third passages 43a to 43d communicate with the one end-side second passage 42a and the other end-side second passage 42b on one end side in the Y-axis direction and the other end in the Y-axis direction of the pin holding portion 43 on the other end side in the Y-axis direction. It extends to the side end face. Further, the third passages 43a to 43d are configured so that the groove depth in the Z-axis direction is the same depth, and the bottom surface of the groove has one end side second passage as shown in FIG. It is configured to be positioned below the bottom surface 42A. Therefore, the third passages 43a to 43d are located below (one surface side) from the one end side second passage bottom surface 42A and the other end side second passage bottom surface 42B. That is, the one end side second passage 42a and the other end side second passage 42b are located above the third passages 43a to 43d in the Z-axis direction.

  As shown in FIG. 2, the pin holding portion 43 has a region defined by the third passage 43 a and a region defined by the third passage 43 a and the third passage 43 b on the other end side in the X-axis direction. Pin base portions 43A to 43D are respectively defined in a region defined by the third passage 43c and the third passage 43d and a region defined by one end side in the X-axis direction and defined by the third passage 43d. Holding positions capable of holding the pin terminals are formed at the lower end surface positions of the pin base portions 43A to 43D and in the vicinity of the third passages 43a to 43d, respectively, and as shown in FIG. 2, the pin base portions 43A to 43D. Each holding hole is provided with second pin terminals 45A to 45D, respectively. As shown in FIG. 5, the second pin terminals 45 </ b> A to 45 </ b> D are connected to the pin bases 43 </ b> A to 43 </ b> D in the vicinity of both ends of secondary conductors 53 and 54, which will be described later, respectively. The flange portions 45E to 45H are defined.

  Further, as shown in FIG. 4, a latching portion 44 that protrudes toward the other end side in the Y-axis direction is provided on the end surface on the other end side in the Y-axis direction of the pin holding portion 43. As shown in FIG. 2, the latching portion 44 is provided as a latching portion 44 </ b> A to 44 </ b> D on each of the pin base portions 43 </ b> A to 43 </ b> D. It arrange | positions along the direction other end side end surface. Engaging surfaces 44E to 44H are defined on the upper surfaces of the engaging portions 44A to 44D, respectively. The retaining surfaces 44E to 44H are located on the same plane orthogonal to the Z-axis direction, and are located below the bottom surface defining the third passage 43a in the Z-axis direction, as shown in FIG. Yes. Therefore, the third passages 43a to 43d are located above the hooking portions 44A to 44D in the Z-axis direction.

  The winding part 50 includes the primary conductor 51 (51A, 51B) and the primary conductor 52 (52A, 52B) shown in FIG. 3, and the secondary conductor 53 (53A, 53B) and the secondary conductor 54 (shown in FIG. 5). 54A and 54B) are wound around the winding drum portion 21 so as to form layers, and have a circuit configuration as shown in FIG. Further, an insulating tape 50A is wound around each layer and the outermost periphery. The primary conductors 51 and 52 and the secondary conductors 53 and 54 are all coated conductors formed by covering the core wire with an insulator.

  As shown in FIG. 3, the one end 51A of the primary conducting wire 51 is entangled and soldered from the winding portion 50 to the linking portion 34L of the first pin terminal 34F through the passage 31e and the passage 33e. Similarly, the other end 51B is wound and soldered to the binding portion 34J of the first pin terminal 34D through the passage 31d and the passage 33d.

  One end 52A of the primary conducting wire 52 is wound and soldered from the winding portion 50 to the binding portion 34H of the first pin terminal 34B through the passage 31b and the passage 33b. Similarly, the other end 52B is wound and soldered to the binding portion 34G of the first pin terminal 34A via the passage 31a and the passage 33a.

  As shown in FIG. 5, one end 53A and the other end 53B of the secondary conducting wire 53 are routed from the winding portion 50 through the first passage 41a to the one end-side second passage 42a as shown in FIG. The Then, one end 53A and the other end 53B are drawn around the third passage 43a and the third passage 43b, respectively. As shown in FIG. 5, the one end 53A drawn around the third passage 43a is hung on the hooking surface 44E of the hooking portion 44A and then tangled with the hooking portion 45E of the second pin terminal 45A. It is attached. Similarly, the other end 53B is hooked on the hooking surface 44F of the hooking portion 44B and then tangled and soldered to the hooking portion 45F of the second pin terminal 45B.

  One end 54A and the other end 54B of the secondary conducting wire 54 pass through the first passage 41a from the winding portion 50 in the same manner as the secondary conducting wire 53, and then are pulled to the other end-side second passage 42b as shown in FIG. Turned. Then, one end 54A and the other end 54B are drawn around the third passage 43c and the third passage 43d, respectively. As shown in FIG. 5, the one end 54A routed around the third passage 43c is hooked on the hooking surface 44G of the hooking portion 44C and then tangled with the hooking portion 45G of the second pin terminal 45C. It is attached. Similarly, the other end 54B is hooked on the hooking surface 44H of the hooking portion 44D and then tangled and soldered to the hooking portion 45H of the second pin terminal 45D.

  As described above, the secondary conducting wires 53 and 54 include the first passage 41a extending in the Z-axis direction, the one end-side second passage 42a or the other end-side second passage 42b extending in the X-axis direction, and the second passage extending in the Y-axis direction. After passing through the three passages 43a to 43d, it is further hung on the hooking portion 44 and soldered by the binding portions 45E to 45H. Soldering is performed by immersing the second pin terminals 45 </ b> A to 45 </ b> D in a tank in which melted solder is stored. However, since the melted solder is hot, the tangled portions 45 </ b> E to 45 </ b> H are transferred to the winding portion 50. There is a possibility that the insulation coating of the secondary conductors 53 and 54 melts toward the core, and the core wires of the secondary conductors 53 and 54 located in the first passage 41a to the third passages 43a to 43d may be exposed. However, since the path between the winding part 50 where the secondary conducting wires 53 and 54 are arranged and the binding parts 45E to H is long with the first path 41a to the third path 43a to 43d, Even if the insulation coating of the conducting wires 53 and 54 melts from the tangled portions 45E to 45H, it is possible to ensure a creepage distance from the winding portion 50 to the portion where the core wires of the secondary conducting wires 53 and 54 are exposed, and insulation. The occurrence of defects can be suppressed.

  In addition, as described above, the first passage 41a, the one end side second passage 42a, the other end side second passage 42b, and the third passages 43a to 43d are parallel to the Z axis direction, the X axis direction, and the Y axis direction, respectively. Is formed. Therefore, even if the coil component 1 is compact, the path lengths of the first passage 41a to the third passages 43a to 43d can be increased and the creepage distance can be increased.

  Further, as described above, the third passages 43a to 43d are located below the one end side second passage 42a and the other end side second passage 42b in the Z-axis direction, and the latching portions 44A to 44D (the latching surfaces 44E to 44H). ) Is located below the third passages 43a to 43d in the Z-axis direction. Further, the binding portions 45E to 45H are located on the lower side in the Z-axis direction from the locking portions 44A to 44D (the locking surfaces 44E to 44H). Therefore, the secondary conducting wires 53 and 54 extended from the winding portion 50 through the first passage 41a move downward in the Z-axis direction as they approach the binding portions 45E to 45H. By comprising in this way, the secondary conducting wires 53 and 54 can be smoothly wired from the winding part 50 to 2nd pin terminal 45A-45D.

  Further, for example, the first passage 41a, the one end side second passage 42a, and the third passage 43a intersect each other, so that the first passage 41a and the one end side second passage 42a, and the one end side second passage 42a and the third passage 43a. A corner is formed between the passage 43a. If the secondary conducting wire 53 is wired in the first passage 41a, the one end side second passage 42a, and the third passage 43a, the conducting wire can be hooked on the corner portion. Thereby, it can suppress that a conducting wire remove | deviates from a pin terminal in the state before conducting and soldering the conducting wire from the winding part 50 to a pin terminal.

  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, a configuration like a coil component 101 as shown in FIG. 7 may be adopted. Since the coil component 101 is the same as the coil component 1 according to the embodiment with respect to the main configuration, only different parts will be described, and the same parts will be described with 100 added to the reference numerals and the description thereof will be omitted.

  As shown in FIG. 8, the first terminal block 130 includes first passages 131 a and 131 b that extend in the Z-axis direction and open into a space in which the winding portion 150 (FIG. 7) is accommodated, and the second rib 132. And the second passages 132a and 132b extending between the first passages 131a and 131b and extending in the direction intersecting the Z axis, and the pin holding portions 133A and 133B. The third passages 133a and 133b communicate with the second passages 132a and 132b, respectively, and extend in the Y-axis direction so as to intersect the second passages 132a and 132b. Further, hooking portions 134A and 134B projecting toward one end side in the Y-axis direction are provided on the end surfaces on one end side in the Y-axis direction of the pin holding portions 133A and 133B.

  The second terminal block 140 includes first passages 141a to 141d that extend in the Z-axis direction and open into a space in which the winding portion 150 (FIG. 7) is accommodated, a second rib 142, and pin holding portions 143A to 143D. Between the first passages 141a to 141d and extending in the direction crossing the Z axis, and the pin holding portions 143A to 143D are defined along the second passages 132a and 132b. Third passages 143a to 143d that communicate with each other and extend in the Y-axis direction so as to intersect with the second passages 132a and 132b are formed. Further, hooking portions 144A to 144D that protrude toward the other end side in the Y-axis direction are provided on the end surfaces on the other end side in the Y-axis direction of the pin holding portions 143A to 143D.

  As shown in FIG. 9, the winding portion 150 (FIG. 7) includes a primary conducting wire 151 (151 </ b> A, 151 </ b> B), a secondary conducting wire 153 (153 </ b> A, 153 </ b> B), and a secondary conducting wire 154 (154 </ b> A, 154 </ b> B). It is configured to be wound around the portion 121. One end 151A of the primary conducting wire 151 passes through the first passage 141b, is wired in the second passage 142b and the third passage 143b, and is hooked on a hooking surface (not shown) of the hooking portion 144B, and then is connected to the second pin terminal 145B. It is tied. Similarly, the other end 151B passes through the first passage 141c, the second passage 142c, and the third passage 143c, hangs on a hooking surface (not shown) of the hooking portion 144C, and then is entangled with the second pin terminal 145C.

  One end 153A of the secondary conducting wire 153 passes through the first passage 131a, the second passage 132a, and the third passage 133a, is hooked on a hooking surface (not shown) of the hooking portion 134A, and then entangled with the first pin terminal 135A. It is done. Similarly, the other end 153B passes through the first passage 131b, the second passage 132b, and the third passage 133b, and is hooked on the hooking surface (not shown) of the hooking portion 134B and then entangled with the first pin terminal 135B.

  One end 154A of the secondary conducting wire 154 passes through the first passage 141a, the second passage 142a, and the third passage 143a, is hooked on a hooking surface (not shown) of the hooking portion 144A, and then entangled with the second pin terminal 145A. It is done. Similarly, the other end 154B passes through the first passage 141d, the second passage 142d, and the third passage 143d, hangs on a hooking surface (not shown) of the hooking portion 144D, and then is entangled with the second pin terminal 145D.

  In the coil component 1 according to the embodiment, the plurality of conducting wires are passed through the first passage 41a. However, in the coil component 101 according to the modification, the first passage corresponding to one end and the other end of each conducting wire, Since the second passage and the third passage are provided, it is possible to suppress the occurrence of a short circuit between the respective conductors.

  The present invention is not limited to the above-described transformer, and can be applied to a coil including a terminal block on which a plurality of conductive wires are wound and mounted on a mounting surface.

DESCRIPTION OF SYMBOLS 1 ... Coil components 10 ... Core 10A ... First core 10B ... Second core 20 ... Bobbin 21 ... Winding body part 21a ... Through hole 21a ... Through hole 22 ... Lower collar part 22a ... Lower groove 23 ·· Upper flange portion 23a ·· Upper groove 30 ·· First terminal block 30A, 30B ·· Convex portion 31 ·· First rib 31a, 31b, 31c, 31d, 31e ·· Passage 32 ·· Second rib 32A , 32B... Convex portion 33... Pin holding portion 33A... Pin base portions 33a, 33b, 33c, 33d, 33e .. passages 34A, 34B, 34D, 34F.・ Binding part 40 ・ ・ Second terminal block 40A, 40B ・ ・ Convex part 41 ・ ・ First rib 41A ・ ・ Other end side first rib 41B ・ ・ One end side first rib 41a ・ ・ First passage 42 ・ ・2nd rib 42A .... One end side second passage bottom 42B ··· the other end side second passage bottom surface 42a · · one end side second passage 42b · · other end side second passage 43 · · pin holding portion 43a, 43b, 43c, 43d · · third passages 44, 44A, 44B , 44C, 44D ..Hanging portions 44E, 44F, 44G, 44H ..Hanging surfaces 45A, 45B, 45C, 45D ..Second pin terminals 45E, 45F, 45G, 45H. Rotating part 50A ・ ・ Insulating tape 51 ・ ・ Primary conductor 52 ・ ・ Primary conductor 53 ・ ・ Secondary conductor 54 ・ ・ Secondary conductor

Claims (3)

A bobbin having 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;
The terminal block is provided with a pin terminal having a binding portion on one side of which the end of the conducting wire is bound, and on the other side, the axial direction is parallel to the direction from the one surface to the other surface. The winding body portion is arranged as described above, the first passage that opens to the other surface and extends in a direction substantially parallel to the axial direction, and the direction that communicates with the first passage and intersects the axial direction A second passage extending on the one surface side, communicating with the second passage, intersecting the axial direction and the extending direction of the second passage, and opening near the pin terminal. A third passage is formed, and has a protrusion protruding in a direction intersecting the axial direction at the opening position of the third passage,
A hooking surface located between the third passage and the binding portion in the axial direction is defined on the protrusion,
The coil component is characterized in that the conductive wire is hooked on the hooking surface through the first passage, the second passage, and the third passage from the winding portion, and is wound around the binding portion. .   2. The coil component according to claim 1, wherein the second passage is located on the other surface side of the third passage in the axial direction.   3. The coil component according to claim 1, wherein the third passage is positioned on the other surface side of the protrusion in the axial direction.

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