ELECTRONIC COMPONENT AND METHOD FOR HOLDING A CONDUCTOR WIRE END

Abstract

An electronic component (coil component (1)) comprises: a conductor wire (3a) having conductivity; and a conductive member (5) having a bent terminal (6) holding one end of the conductor wire (3a). The bent terminal (6) comprises: a base portion (6a) supporting the conductor wire (3a); a folded portion (6b) adjoining one end of the base portion (6a) and being bent and folded back; and a kinked portion (6c) adjoining the folded portion (6b) and provided at a front end opposite to the base portion (6a). The conductor wire (3a) is clamped between the base portion (6a) and the folded portion (6b) or the kinked portion (6c).The folded portion (6c) is folded toward a side closer to the base portion (6a) than the tangential direction of the folded portion (6b) so that the gap between the folded portion (6c) and the base portion (6a) is smaller than a width of the conductor wire (3a).

Description

TECHNICAL FIELDThe present invention relates to an electronic component including a conductive wire and a bent terminal holding an end of the conductive wire, and a method of holding the end of the conductive wire.BACKGROUND ARTPatent Document 1 discloses a coil component including a conductor wire (referred to as "wire end" in this document) and a conductive member (referred to as "metal terminal" in this document) including a bent terminal (referred to as "folding piece" in this document) that holds one end of the conductor wire. The bent terminal has a base portion and a flat plate-shaped folded portion (referred to as "folding piece" in that document) bent at a substantially right angle to the base portion. In a state where the conductor wire is disposed on the base portion, the bent terminal is crimped so that the folded portion is bent toward the base portion to clamp the conductor wire.LIST OF CITED DOCUMENTSPATENT DOCUMENTSPatent Document 1: JP 2019-91736 AOUTLINE OF THE INVENTIONPROBLEM TO BE SOLVED BY THE INVENTIONThe method for crimping and clamping a conductor wire disclosed in Patent Document 1 can easily result in outward movement of the conductor wire (i.e., in a direction away from a bending fulcrum of the folding portion) when the flat plate-shaped folding portion is bent to clamp the conductor wire (i.e., in crimping). Therefore, there is still room for improvement in terms of electrical and physical connection between the conductor wire and the conductive member.The outward movement of the conductor wire occurs when the conductor wire is pressed by the bent folding portion which is deformed during crimping.The present invention has been made in view of the above problem, and has an object to provide an electronic component capable of providing an electrically and physically stable connection between a conductor wire and a conductive member, and a method of holding an end of the conductor wire.MEANS FOR SOLVING THE PROBLEMAn electronic component according to the present invention includes a conductor wire having conductivity and a conductive member having a bent terminal holding one end of the conductor wire. The bent terminal includes a base portion that supports the conductor wire, a folded portion that connects to one end of the base portion and that is bent and folded back, and a bent portion that connects to the folded portion and that is provided at a front end that is disposed opposite to the base portion. The conductor wire is sandwiched between the base portion and the folded portion or the bent portion. The bent portion is bent toward a side closer to the base portion as compared with the tangential direction of the bent portion approach, so that the gap between the bent portion and the base portion is smaller than a width of the conductor wire.A method of holding a lead wire end according to the present invention includes providing an electronic component including a lead wire having conductivity and a conductive member including a bent terminal holding an end of the lead wire, the bent terminal including a base portion supporting the lead wire, a folded portion continuous to an end of the base portion being bent and folded back, and a bent portion continuous to the folded portion and provided at a front end which is opposed to the base portion and bent toward a side which is closer to the base portion than the tangential direction of the folded portion, disposing the conductor wire between the base portion and the folded portion or the bent portion by passing the conductor wire between the front end and the base portion of the bent terminal, and crimping the bent terminal after the disposing to squeeze the conductor wire between the folded portion or the bent portion and the base portion. At the time of arranging, the gap between the bent portion and the base portion is larger than a width of the conductor wire, and after crimping, the gap between the bent portion and the base portion is smaller than a width of the conductor wire.EFFECT OF THE INVENTIONAccording to the present invention, there are provided an electronic component and a method for holding an end of the conductor wire, which can provide an electrically and physically stable connection between a conductor wire and a conductive member.BRIEF DESCRIPTION OF THE FIGURESFIG. 1 is a perspective view of a coil member. FIG. 2 is a sectional view of a bent terminal shown in II of FIG. 1, the bent terminal being in a state after crimping. FIG. 3 is a sectional view of the bent terminal shown in II of FIG. 1, the bent terminal being in a state before crimping. FIG. 4 is a sectional view of a bent terminal shown in II of FIG. 1, and shows the bent terminal according to a first modified example. FIG. 5 is a diagram showing a bent terminal according to a second modified example. FIG. 6 is a diagram showing a bent terminal according to a third modified example.DESCRIPTION OF THE EMBODIMENTSHereinafter, embodiments of the present invention will be described with reference to the figures.The embodiments described below are merely examples for facilitating understanding of the present invention, and are not intended to limit the present invention. That is, shapes, dimensions, arrangements, and the like of elements described below may be modified or improved without departing from the present invention, and it is understood that equivalents are also intended to be included in the present invention.Further, the various structural elements of the present invention need not necessarily be provided independently of each other. Thus, multiple structural elements can also be formed as a single structural element. A structural member may also be formed to be divided into a plurality of structural members. A particular structural element may also be part of another structural element. A portion of a particular structural element may also overlap with a portion of another structural element.In all the drawings, similar structural elements are denoted by the same reference numerals, and description thereof will not be repeated. While reference is made to "top" and "bottom" in the present specification, these directions are given for convenience only for explaining the relative relationships between structural elements and are not intended to limit the orientation during manufacture or use of articles according to the present invention. In particular, in the present embodiment, a mounting direction indicates up, the direction opposite to the direction upward indicates down, and up and down do not necessarily coincide with up and down with respect to gravity.< Over Coil Component>First, an outline of a coil component 1 will be given with reference mainly to FIGS. 1 to 3.FIG. 1 is a perspective view of the coil member 1. FIG. 2 is a sectional view of a bent terminal 6 shown in II of FIG. 1, the bent terminal 6 being in a state after crimping. FIG. 3 is a sectional view of the bent terminal 6 shown in II of FIG. 1, wherein the bent terminal 6 is in a state before crimping.To show a conductive member 5 as a whole, FIG. 1 shows the coil component 1 in a state where a mounting surface to be mounted on a board is positioned at the top and in a state where it is arranged in an orientation opposite to that in which it is generally mounted on the substrate, respectively. Hereinafter, the above and below will be described with reference to the above and below in FIG. 1.An electronic component (coil component 1) according to the present embodiment includes a conductor wire 3 athat has conductivity and a conductive member 5 that has a bent terminal 6 that holds one end of the conductor wire 3 a.The bent terminal 6 includes a base portion 6 athat supports the conductor wire 3 a, a bent portion 6 bthat connects to one end of the base portion 6 aand that is bent and folded back, and a bent portion 6 cthat connects to the bent portion 6 band that is disposed opposite to the base portion 6 aat a front end.The conductor wire 3a is disposed between the base portion 6a and the folded portion 6b or the bent portion 6c.The bent portion 6 cis bent toward a side bringing it closer to the base portion 6 afrom the tangential direction of the bent portion 6 b, the gap between the bent portion 6 cand the base portion 6 ais smaller than a width of the conductor wire 3 a.Here, a "boundary" between the folded portion 6 band the bent portion 6 cindicates a location where the curvature changes, which is located closer to the front end on the front end side as viewed from the folding point of the folded portion 6 b, and also indicates a front end portion (a front end of a straight line portion 6 fdescribed later in the present embodiment) of the folded portion 6 bon an outer surface (an upper surface) of the bent terminal 6, as viewed from a direction (a width direction of the bent terminal 6) perpendicular to a virtual plane (a plane including a top-bottom direction and a right-left direction in FIG. 2 in a plane) including directions in which the folded portion 6 band the bent portion 6 cextend.The "tangential direction of the folded portion 6 b" denotes a tangential direction at the front end portion of the folded portion 6 b(i.e., at the boundary between the front end of the folded portion 6 band the bent portion 6 c), and in the present embodiment, denotes the direction in which the rectilinear portion 6 fdescribed later extends.For example, in an arrangement in which, unlike in FIG. 4, the folded-over portion 6 bis bent over beyond the folding point with a predetermined curvature without providing the straight portion 6 f, "bent portion 6 c" refers to a portion beyond a location that is bent over with a relatively high curvature compared to the location bent over with this predetermined curvature and approaches the base portion 6 a.In this specification, the "bent portion 6 c" in the bent terminal 6 refers to not only a portion whose inclination changes from that of the folded portion 6 bbut also a portion extending from this location whose inclination changes from that of the folded portion 6 bto the front end.That is, if a linearly extending portion is provided on the side closer to the front end than the position where the inclination changes from that of the folded-over portion 6 b, the bent portion 6 calso includes this linearly extending portion. This also applies to the bent portions 16 cand 26 cdescribed later.As for the above-described "base portion 6 athat supports the conductor wire 3 a", this base portion 6 ais not limited to one that continuously supports the conductor wire 3 a.That is, the base portion 6 amay also be provided at a position where the movement of the conductor wire 3 ais to be restricted, being spaced apart from the conductor wire 3 a, and abuts and holds the conductor wire 3 aafter crimping.The above-described expression "a gap between the bent portion 6 cand the base portion 6 ais smaller than a width of the conductor wire 3 a" also means that there is no "gap between the bent portion 6 cand the base portion 6 a". That is, it also includes meaning that the bent portion 6 cis abutted to the base portion 6 a.The above-mentioned "width" means a wire diameter in the case of a round wire or a thickness in the case of a rectangular wire (the length of the shorter side in the cross section of a rectangular wire).If the bent terminal 6 is not formed with a bent portion 6c, that is, if the portion beyond the bent portion 6b extends linearly, then the portion beyond the bent portion 6b in the bent terminal 6 contacts the conductor wire 3a at just one point when the bent terminal 6 is crimped, as viewed from the side. This point contact shifts with the amount of crimping, so that a pressing force acting from the bent terminal 6 on the conductor wire 3a tends to act thereon in the outward direction, which may result in the conductor wire 3a slipping outward and coming off the bent terminal 6.In contrast, according to the above-described arrangement, the bent portion 6 cis provided which is bent toward a side closer to the base portion 6 afrom the tangential direction of the bent portion 6 b, so that the bent portion 6 cfunctions as a stopper that limits the movement of the conductor wire 3 a.In other words, even if the conductor wire 3 ais pushed out toward the folded-over portion 6 bor the bent-over portion 6 cin the bent-over terminal 6 upon bending (crimping), the bent portion 6 cmay prevent the conductor wire 3 afrom coming off between the base portion 6 aand the folded-over portion 6 bor the bent portion 6 c.As the electronic component according to the present invention, a coil component 1 serving as a common mode choke coil is described as an example in the present embodiment, but the present invention is not limited to such an arrangement. For example, the present invention can be applied not only to a coil component 1 but generally to electronic components having a bent terminal holding a lead wire.A method of holding a conductor wire end according to the present embodiment includes providing the above-described electronic component (coil component 1), disposing the conductor wire 3 abetween the base portion 6 aand the folded portion 6 bor the bent portion 6 cby passing the conductor wire 3 abetween a front end and the base portion 6 aof the bent terminal 6, and crimping the bent terminal 6 to crimp the conductor wire 3 abetween the folded portion 6 bor the bent portion 6 cand the base portion 6 aafter the disposing.At the time of arranging, the gap between the bent portion 6 cand the base portion 6 ais larger than a width of the conductor wire 3 a, and after crimping, the gap between the bent portion 6 cand the base portion 6 ais smaller than a width of the conductor wire 3 a.Since the gap between the bent portion 6 cand the base portion 6 ais larger than the width of the conductor wire 3 aat the time of arranging, the conductor wire 3 acan be smoothly arranged with the above-described arrangement. Further, since the gap between the bent portion 6 cand the base portion 6 aafter crimping is smaller than the width of the conductor wire 3 a, the conductor wire 3 aafter crimping can be prevented from coming off between the base portion 6 aand the folded portion 6 bor the bent portion 6 c.That is, since the bent terminal 6 is provided with a bent portion 6 c(i.e., a location bent toward the base portion 6 aside before crimping), the bent portion 6 cmay serve as a stopper that limits the movement of the conductor wire 3 a.Further, the folded-over portion 6 bis provided with the linear portion 6 fthat linearly connects to a portion folded upward from the base portion 6 aside.The linear portion 6 fat the folded portion 6 bextends obliquely downward from the rear side (proximal side) toward the front side (distal side), in other words, extends linearly obliquely downward, approaching the base portion 6 a.The inclination angle of the linear portion 6 fis preferably at least 2 degrees and at most 30 degrees, and more preferably at least 5 degrees and at most 25 degrees with respect to the upper surface of the base portion 6 a(i.e., the horizontal plane and a surface in contact with the lead wire 3 a, respectively).The length of the linear portion 6 fis preferably at least 1 time and at most 5 times, and more preferably at least 1.5 times and at most 3 times, the width of the conductor wire 3 a(or width direction length in the case of a rectangular wire (namely, toward the long side in the cross section of a rectangular wire)).With the above-described arrangement, by crimping from the linear portion 6 f, the linear portion 6 fwith its wall surface inclined downward and / or the bent portion 6 cmay constantly elastically press the conductor wire 3 atoward the back side (the folding side of the folded-over portion 6 band the left side in FIG. 2 ), respectively, where the folded-over portion 6 bpasses through a U-bend. The conductor wire 3a contacts the wall surfaces, so that the conductor wire 3a has no play in the bending space of the folded-over portion 6b. Therefore, the holding position of the lead wire 3 ais stable for each product and is not subject to variations, which makes it easier for a worker or a working device to cut the lead wire 3 aadapted to the end of the conductive member 5 and determine the position to be irradiated with a laser.Specifically, the location holding the conductor wire 3 ais a straight location in either the straight portion 6 fand the bent portion 6 c, so that a force in a holding direction between the base portion 6 aand the straight portion in the straight portion 6 fand the bent portion 6 cmay be more easily applied to the conductor wire 3 a, and it is possible to increase the holding force applied to the conductor wire 3 aand stabilize the position of the conductor wire 3 awhen irradiated with a laser, which will be described later.[Overall configuration] The coil member 1 according to the present embodiment includes a drum core 2, a coil 3 formed of the conductor wire 3 acoiled around a central portion of the drum core 2, an I core 4 connected to both ends of the drum core 2 and forming a magnetic circuit together with the drum core 2, and conductive members 5 connected to the one end of the conductor wire 3 a.Four conductive members 5 are provided at the four corners on the upper side of the coil member 1, and each have the bent terminal 6 that holds the end of the lead wire 3 aof the coil 3 on an outer side in the width direction that is perpendicular to the axial direction of the coil 3. The conductive members 5 each include, on their uppermost side, a mounting surface mountable on a circuit board, a bridging portion extending outward in the width direction and downward from the mounting plane, and the bent terminal 6 connected to the bridging portion.[Terminal]The bent terminal 6 will be described mainly with reference to FIGS. 2 and 3.The bent terminal 6 includes the base portion 6 aon which the conductor wire 3 ais mounted and which extends horizontally from a lower end of the bridging portion, the folded-over portion 6 bwhich is folded over on the base portion 6 awith respect to the width direction (in the horizontal plane that is perpendicular to the axial direction of the coil 3) of the coil member 1 from the inside to the outside, and the bent portion 6 cprovided at the front end as viewed from the folded-over portion 6 b.At each of the four corners of the upper surface of the coil member 1 in FIG. 1, an outermost end of the conductor wire 3 aand the end of the conductive member 5 on the outer side in the axial direction are welded to each other, thereby forming a weld bead, as shown in FIG. 1. At each end of the conductive member 5 on the outer side in the axial direction, a bent terminal 6 is formed before welding, but is melted by the welding, thereby forming the above-described welding bead.However, the present invention is not limited to such an arrangement, and is not particularly limited to an arrangement in which two bent terminals 6 are formed in each of the four corners of the upper surface of the coil member 1 in FIG. 1, and it is also possible that only one bent terminal 6 is formed in each of the four corners. Furthermore, it is also possible for the coil component 1 to be provided, for example, only with two bent-over terminals 6.The bending angle θ of the folded portion 6 cshown in FIG. 2 is preferably at least 25 degrees and at most 45 degrees with respect to the tangential direction of the folded portion 6 b(the location in the folded portion 6 badjacent to the folded portion 6 c).In the present embodiment, the folded portion 6 bhas the linear portion 6 f, the folded portion 6 calso has a linear portion, and the bending angle θ denotes an angle of the linear portion in the folded portion 6 crelative to the direction in which the linear portion 6 fof the folded portion 6 bextends (i.e., the tangential direction at the location adjacent to the folded portion 6 c).According to the above-described arrangement, the bent portion 6 c(or a first bent portion 16 ddescribed later) is located in this angle range, whereby it becomes possible to suppress interference with crimping by reducing a reaction force generated when the front end of the bent terminal 6 abuts the base portion 6 awhile limiting the range of movement of the conductor wire 3 a.More specifically, the "tangential direction of the folded-over portion 6 b" denotes a tangential direction of the outer surface of the folded-over portion 6 b(the upper surface that is the surface on the side against which a crimping tool not shown in the drawings presses), as viewed from a direction perpendicular to a virtual plane including the directions in which the folded-over portion 6 band the bent portion 6 cextend.However, the present invention is not limited to such an arrangement, and the bending angle of the bent portion 6 cmay be perpendicular to the tangential direction of the folded portion 6 bwith the aim of restricting the position of the conductor wire 3 a.The length of the bent portion 6 cis preferably at least 0.5 times and at most 2 times, preferably at least 1 time and more preferably at most 1.5 times the thickness of the bent portion 6 c.Here, the "length of the bent portion 6 c" denotes the length of a middle portion in the thickness direction of the bent portion 6 c.For example, the thickness of the bent portion 6 c(or the thickness of the bent terminal 6) according to the present embodiment may be 0.1 mm, and the length of the bent portion 6 cmay be 0.15 mm.According to the above-described arrangement, the length of the bent portion 6 cis at least 0.5 times the thickness of the bent portion 6 c, whereby the movement of the conductor wire 3 acan be easily restricted. The length of the bent portion 6 cis at most 2 times the thickness of the bent portion 6 c, whereby the bent portion 6 cmay be prevented from bulging outward due to the lead wire 3 a.If the bending angle of the bent portion 6 cis increased with respect to the tangential line of the folded-over portion 6 b, the bent portion 6 cmay also have a length shorter than the above-described length.The thickness of the folded portion 6 bis preferably at least 1.5 times and at most 3 times the diameter of the conductor wire 3 a.For example, the diameter of the conductor wire 3 acan preferably be 0.02 mm to 0.06 mm. The conductor wire 3 aaccording to the present embodiment is a round wire, but is not limited to a round wire, and may be a rectangular wire. In the case of a rectangular wire, the diameter of the conductor wire 3 acan also be regarded as the thickness (length from top to bottom) of the conductor wire 3 a.According to the above-described arrangement, the thickness of the folded portion 6 bis at least 1.5 times the diameter of the conductor wire 3 a, whereby the conductor wire 3 acan be held appropriately. The thickness of the folded portion 6b is at most 3 times the diameter of the conductor wire 3a, whereby the bent portion 6c formed integrally with the folded portion 6b can be easily bent upon crimping.[Production Method]Next, a method of manufacturing the bent terminal 6 holding the lead wire 3 awill be described.A plurality of conductive members 5 are formed into ring members (not shown in the figures). The plurality of conductive members 5 are each provided with a bent terminal 6 in which the bent portion 6 cis formed by punching a base material having press processing in the state shown in FIG. 3.More specifically, the above-mentioned pressing processing is performed by pressing the punch of the crimping tool against the bent portion 6 cfrom above in a state where a holding tool is disposed on the lower surface of the folded portion 6 bacross the base portion 6 ato bend the bent portion 6 cby the crimping tool (not shown in the drawings).The conductive member 5 is connected to the drum core 2 (ferrite) and is wound around the drum core 2 so as to form the coil 3 (two coils 3 in the present embodiment). The lead wire 3 a(or the four lead wires 3 ain the present embodiment), which is a terminal of the coil 3, is disposed between the base portion 6 aand the bent portion 6 cof the bent terminal 6.The conductor wire 3 a leaded out from the coil 3 is temporarily fixed with the holding tool (not shown in the drawings) located on the outside of the conductive member 5. In a state where the conductor wire 3 ais fixed by the holding tool (not shown in the drawings), the folded-over portion 6 band the bent portion 6 cof the bent terminal 6 are crimped by press processing. By this crimping, the conductor wire 3a is pinched between the folded-over portion 6b and / or the bent portion 6c and the base portion 6a. That is, by the crimping operation, the folded portion 6 band / or the bent portion 6 cis bent and deformed to a position where the conductor wire 3 ais squeezed under pressure by the folded portion 6 band / or the bent portion 6 c. This makes it possible to stably maintain the electrical connection between the lead wire 3 aand the conductive member 5.In a state where the lead wire 3 ais thus clamped, the fixation is released by the holding tool (not shown in the drawings), the surplus length of the lead wire 3 ais cut off, and then the end of the conductive member 5 and the front end of the lead wire 3 aare irradiated with a laser to be melted and united with each other, thereby forming the weld bead.In a state before crimping the bent terminal 6, as shown in FIG. 3, the gap between the lower end of the bent portion 6 cand the upper surface of the base portion 6 ais larger than a diameter of the conductor wire 3 a.With respect to the axial direction of the bent terminal 6, the change rate of the bend of the folded portion 6 bin the bent terminal 6 before and after crimping is larger than the change rate of the bend of the bent portion 6 c. Further, the change rate of the bending of the folded portion 6 bafter crimping is larger than the change rate of the bending of the folded portion 6 bbefore crimping.[First Modified Example]Next, a first modified example will be described with reference to FIG. 4. FIG. 4 is a sectional view of the bent terminal 6 shown in II of FIG. 1, and shows the bent terminal 6 according to the first modified example.As shown in FIG. 4, in the bent terminal 6 according to the first modified example, the lead wire 3 ais clamped at three locations of the base portion 6 a, the folded portion 6 b, and the bent portion 6 c. The conductor wire 3a is pinched by the base portion 6a, the folded-over portion 6b and the bent portion 6c.According to the above-described arrangement, the conductor wire 3 acan be brought into a state of having no play, and the conductor wire 3 ais firmly held by the base portion 6 a, the folded-over portion 6 b, and the bent portion 6 c.That is, clamping the conductor wire 3a at three places makes it possible to restrict the horizontal movement of the conductor wire 3a by the folded portion 6b and the bent portion 6c, while restricting the vertical movement of the conductor wire 3a by the base portion 6a, the folded portion 6b and the bent portion 6c.[Second Modified Example]Next, a bent portion 16 caccording to a second modified example will be mainly described with reference to FIG. 5.FIG. 5 is a diagram showing a bent terminal 16 according to the second modified example.The bent portion 16 cin the bent terminal 16 includes, in addition to a first bent portion 16 dwhich is bent toward a side approaching the base portion 6 a, a second bent portion 16 ewhich is located on a side closer to the front end than the first bent portion 16 dand which is bent toward a side opposite to the bending direction of the first bent portion 16 d.At this time, in the bent portion 16 c, the second bent portion 16 eis formed along (i.e., substantially parallel to) the base portion 6 a.In the bent terminal 16, the first bent portion 16 dis referred to as not only a portion in which an inclination changes from that of the folded portion 6 bbut also a portion extending from the location where the inclination changes from that of the folded portion 6 bto the second bent portion 16 e. This also applies to the first bent portion 26 dwhich will be described later.The second bent portion 16 eindicates not only a portion where an inclination changes from that of the first bent portion 16 d, but also a portion extending to the front end from the location where the inclination changes from that of the first bent portion 16 d. This also applies to the second bent portion 26 edescribed later.The front end (the second bent portion 16 e) of the bent portion 16 cis pressed against the base portion 6 aby the punch of the crimping tool (not shown in the drawings) according to the present example, and bent in a direction along the base portion 6 a.Specifically, the "second bent portion 16 e,... bent toward a side opposite to the bending direction of the first bent portion 16 d" means that the second bent portion 16 eis bent toward a side (which is on the upper side with respect to the tangential direction of the first bent portion 16 dand the horizontal direction in FIG. 5 ) opposite to the bending direction of the first bent portion 16 dwith respect to the tangential direction of the bent portion 6 b(i.e., a downward direction in FIG. 5 that is a direction in which the first bent portion 16 dis approached to the base portion 6 a).According to the above-described arrangement, the second bent portion 16 eextends along (or parallel to) the base portion 6 a, whereby the state in which the conductor wire 3 ais held by the bent portion 16 acan be further stabilized and the conductor wire 3 acan be prevented from coming off via a gap between the bent portion 16 cand the base portion 6 a.Such a bent portion 16 cis formed by pressing the punch (not shown in the drawings) used for crimping against the second bent portion 16 euntil the second bent portion 16 eis pressed against the base portion 6 a.The bent portion 16c is preferably brought into abutment with the base portion 6a and is brought into pressing contact with the base portion 6a. The term "abutment" is not limited to point contact and line contact, but a surface contact as shown in FIG. 5 may also correspond to an "abutment".According to the above-described arrangement, it becomes difficult for the conductor wire 3 ato come loose over a gap between the bent portion 16 cand the base portion 6 a.In the present example, the length of the first kinked portion 16 dis substantially equal to the length of the second kinked portion 16 e, but the length of the first kinked portion 16 dmay also be different from the length of the second kinked portion 16 e.[Third Modified Example]Next, a bent terminal 26 according to a third modified example will be described with reference to FIG. 6. FIG. 6 is a diagram showing the bent terminal 26 according to the third modified example.The bent terminal 26 according to the present example includes, in addition to a first bent portion 26 dwhich is bent toward a side approaching the base portion 6 a, a second bent portion 26 ewhich is located on a side closer to the front end than the first bent portion 26 dand which is bent toward a side opposite to the bending direction of the first bent portion 26 d. At this time, a lower end of the front end of the second bent portion 26 eis brought into abutment (line contact) with the base portion 6 aand is brought into pressing contact with the base portion 6 a.Specifically, the "second bent portion 26 e,... bent toward a side opposite to the bending direction of the first bent portion 26 d" means that the second bent portion 26 eis bent in a bending direction that is opposite to a side (which is on the upper side with respect to the tangential direction of the first bent portion 26 d, and in FIG. 6, the obliquely downward direction that is inclined at a shallower angle with respect to the base portion 6 athan the first bent portion 26 d) that is opposite to the bending direction of the first bent portion 26 dwith respect to the tangential direction of the bent portion 6 b(i.e., a downward direction in FIG. 6 that is a direction in which the first bent portion 26 dis approached to the base portion 6 a).The second bent portion 26 eaccording to the present embodiment is preferably formed longer than the first bent portion 26 d. Specifically, the second bent portion 26 emay be formed to be 1.5 times longer than the first bent portion 26 d.Also in the above-described arrangement, the lower end of the front end of the second bent portion 26e is in pressing contact with the base portion 6a, whereby it is difficult for the conductor wire 3a to come loose over a gap between the bent portion 26c and the base portion 6a.The above-described embodiment and the modified examples also include the following technical ideas: (1) Electronic component including:a conductor wire having conductivity; anda conductive member having a bent terminal holding an end of the lead wire,wherein the bent terminal comprises:a base portion supporting the conductor wire;a folded portion which connects to an end of the base portion and which is folded and folded back; anda folded portion which connects to the folded portion and which is provided at a front end which is disposed opposite to the base portion, andwherein the conductor wire is clamped between the base portion and the folded portion or the bent portion, andwherein the bent portion is bent toward a side closer to the base portion than the tangential direction of the bent portion, so that the gap between the bent portion and the base portion is smaller than a width of the conductor wire.(2) The electronic component according to (1), wherein the conductor wire is pinched by the base portion, the folded portion, and the bent portion. (3) The electronic component according to (1) or (2), wherein the bent portion includes, in addition to a first bent portion bent toward a side approaching the base portion, a second bent portion located on a side closer to the front end than the first bent portion and bent toward a side opposite to the bending direction of the first bent portion, and in the bent portion, the second bent portion extends along the base portion. (4) The electronic component according to any one of (1) to (3), wherein the bent portion is brought into abutment with the base portion and is in contact with the base portion in a pressing manner against the base portion. (5) The electronic component according to any one of (1) to (4), wherein the folded-over portion includes, in a portion continuous to a portion folded over from the base portion, a linear portion extending toward a side approaching the base portion when the linear portion is followed from the rear side to the front side. (6) The electronic component according to (5), wherein the linear portion and / or the bent portion elastically press or bias the lead wire toward a folding side of the folded portion. (7) The electronic component according to (5) or (6), wherein the inclination angle of the linear portion is at least 2 degrees and at most 30 degrees with respect to an area in contact with the lead wire in the base portion. (8) The electronic component according to any one of (5) to (7), wherein the length of the linear portion is at least 1 time and at most 5 times the width of the lead wire. (9) The electronic component according to any one of (1) to (8), wherein the bending angle of the bent portion is at least 25 degrees and at most 45 degrees with respect to a tangential direction of the folded portion. (10) The electronic component according to any one of (1) to (9), wherein the length of the bent portion is at least 0.5 times and at most 2 times the thickness of the bent portion. (11) The electronic component according to any one of (1) to (10), wherein the thickness of the folded portion is at least 1.5 times and at most 3 times the diameter of the lead wire. (12) A method of holding a lead wire end, the method comprising:preparing an electronic component including a conductive wire having conductivity and a conductive member including a bent terminal holding one end of the conductive wire,wherein the bent terminal comprises:a base portion supporting the conductor wire;a folded portion which connects to an end of the base portion and which is folded and folded back; anda bent portion which connects to the folded portion and which is provided at a front end which is disposed opposite to the base portion and which is bent toward a side which is closer to the base portion than the tangential direction of the folded portion,disposing the conductor wire between the base portion and the folded portion or the bent portion by passing the conductor wire between the front end and the base portion of the bent terminal; andcrimping the bent terminal to crimp the conductor wire between the folded portion or the bent portion and the base portion after the disposing,wherein a gap between the bent portion and the base portion is larger than a width of the conductor wire at the time of arranging, andwherein a gap between the bent portion and the base portion after the crimping is smaller than a width of the conductor wire.LIST OF REFERENCE CHARACTERS1 Coil component (electronic component) 2 Drum core 3 Coil 3 a Leiter wire 4I core 5 Conductive member 6 Bent terminal 6 aBase portion 6 b Portion 6 c Geknickt portion 6 f Geradlinig portion 16 Bent terminal 16 c Geknickt portion 16 dFirst bent portion 16 eSecond bent portion 26 Bent terminal 26 c Portion 26 dFirst bent portion 26 eSecond bent portionReferences included in the specificationThis list of documents cited by the applicant has been produced in an automated manner and is only included for the better information of the reader. The list is not part of the German patent application or utility model application. The DPMA does not take any adhesion for any faults or omissions.Patent Literature citedJP 2019-91736 A

[0003]

Claims

An electronic component comprising: a conductor wire having conductivity; and a conductive member including a bent terminal holding an end of the conductor wire, the bent terminal including: a base portion supporting the conductor wire; a folded portion adjoining an end of the base portion and being bent and folded back; and a bent portion that connects to the folded portion and that is provided at a front end that is disposed opposite to the base portion, and wherein the conductor wire is sandwiched between the base portion and the folded portion or the bent portion, and wherein the bent portion is bent toward a side that is closer to the base portion compared to the tangential direction of the folded portion, such that the gap between the bent portion and the base portion is smaller than a width of the conductor wire.The electronic component according to claim 1, wherein the conductor wire is pinched by the base portion, the folded portion, and the bent portion.The electronic component according to claim 1 or 2, wherein the bent portion includes, in addition to a first bent portion bent toward a side approaching the base portion, a second bent portion located on a side closer to the front end than the first bent portion and bent toward a side opposite to the bending direction of the first bent portion, and in the bent portion, the second bent portion extends along the base portion.The electronic component according to any one of claims 1 to 3, wherein the bent portion is brought into abutment with the base portion and is in pressing contact with the base portion.The electronic component according to any one of claims 1 to 4, wherein the folded-over portion includes, in a portion continuous to the portion folded over from the base portion, a linear portion extending toward a side approaching the base portion when the linear portion is followed from the rear side to the front side.The electronic component according to any one of claims 1 to 5, wherein the bending angle of the bent portion is at least 25 degrees and at most 45 degrees with respect to a tangential direction of the folded portion.The electronic component according to any one of claims 1 to 6, wherein the length of the bent portion is at least 0.5 times and at most 2 times the thickness of the bent portion.The electronic component according to any one of claims 1 to 7, wherein the thickness of the folded portion is at least 1.5 times and at most 3 times the diameter of the lead wire.A method of holding a lead wire end, the method comprising: preparing an electronic component including a lead wire having conductivity and a conductive member including a bent terminal for holding an end of the lead wire, the bent terminal including: a base portion supporting the lead wire; a folded portion adjoining an end of the base portion and being bent and folded back; a bent portion which connects to the folded portion and which is provided at a front end which is disposed opposite to the base portion and which is bent toward a side which is closer to the base portion than the tangential direction of the folded portion, disposing the conductor wire between the base portion and the folded portion or the bent portion by passing the conductor wire between the front end and the base portion of the bent terminal; and; crimping the bent terminal after the arranging to squeeze the conductor wire between the folded portion or the bent portion and the base portion, wherein a gap between the bent portion and the base portion at the time of the arranging is larger than a width of the conductor wire, and wherein a gap between the bent portion and the base portion after the crimping is smaller than a width of the conductor wire.

Images