Electronic component and wire end holding method

Abstract

An electronic component (coil component (1)) is provided with: a conductive wire (3a); and a conductive member (5) having a bent terminal (6) that holds an end portion of the conductive wire (3a). The bent terminal (6) is provided with: a base part (6a) for supporting the lead wire (3a); a folded part (6b) which is continuous with one end part side of the base part (6a) and is bent and folded back; and a bent part (6c) which is continuous with the folded part (6b) and is arranged on the top end side which is the side opposite to the base part (6a). The wire (3a) is sandwiched between the base part (6a) and the folded part (6b) or the bent part (6c). The bent portion (6c) is bent toward a side closer to the base portion (6a) with respect to a tangential direction of the folded portion (6b), and a gap between the bent portion (6c) and the base portion (6a) is smaller than a wire width of the conductive wire (3a).

Description

Technical Field

[0001] The present invention relates to an electronic component including a lead wire and a bent terminal for holding an end portion of the lead wire, and a lead wire end holding method. Background Art

[0002] Patent document 1 discloses a coil element, which includes: a conductor (described as an electric wire end in Patent document 1); and a conductive member (described as a metal terminal in Patent document 1), which has a bent terminal (described as a folded piece in Patent document 1) for holding the end of the conductor. The bent terminal includes: a base portion; and a flat-plate-shaped folded portion (described as a folded piece in Patent document 1) that is bent at a substantially right angle from the base portion. When the conductor is arranged on the base portion, the bent terminal clamps the conductor in a manner such that the folded portion is bent toward the base portion.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Publication No. 2019-91736 Summary of the invention

[0006] Problem that the invention aims to solve

[0007] In the clamping and fixing process of the wire disclosed in Patent Document 1, when the flat-plate-shaped folded portion is bent to clamp the wire (when clamping), the wire tends to move outward (in a direction away from the bending fulcrum of the folded portion). Therefore, there is room for improvement in the electrical connection and physical connection between the wire and the conductive member.

[0008] When clamping is performed, the wire is pushed by the bent and deformed folded portion, causing the wire to move outward.

[0009] The present invention has been made in view of the above-mentioned problems, and provides an electronic component and a method for holding a wire end portion that can stably electrically and physically connect a wire to a conductive member.

[0010] Solutions for solving problems

[0011] The electronic component of the present invention is characterized in that the electronic component comprises: a conductive wire, which is conductive; and a conductive member, which has a bent terminal for holding the end of the conductive wire, and the bent terminal comprises: a base portion, which supports the conductive wire; a folded portion, which is continuous with one end side of the base portion and is bent and folded back; and a bent portion, which is continuous with the folded portion and is arranged to the top end side which is opposite to the base portion, the conductive wire is sandwiched by the base portion and the folded portion or the base portion and the bent portion, the bent portion is bent toward a side close to the base portion relative to the tangent direction of the folded portion, and the gap between the bent portion and the base portion is smaller than the line width of the conductive wire.

[0012] In addition, the wire end holding method of the present invention is characterized in that the wire end holding method comprises: a configuration step of preparing an electronic component, wherein the electronic component comprises: a wire having conductivity; and a conductive member having a bent terminal for holding the end of the wire, wherein the bent terminal comprises: a base portion for supporting the wire; a folded portion which is continuous with one end side of the base portion and is bent and folded back; and a bent portion which is continuous with the folded portion and is provided at a top end side which is a side opposite to the base portion and is bent toward the base portion side relative to a tangent direction of the folded portion, wherein the bent terminal comprises: A configuration process allows the wire to pass between the top end of the bent terminal and the base portion, and configures the wire between the base portion and the folded portion or the base portion and the bent portion; and a clamping process, after the configuration process, the bent terminal is clamped to flatten the wire between the folded portion and the base portion or the bent portion and the base portion, the gap between the bent portion and the base portion during the configuration process is larger than the wire width, and the gap between the bent portion and the base portion after the clamping process is smaller than the wire width.

[0013] Effects of the Invention

[0014] According to the present invention, it is possible to provide an electronic component and a method for holding a wire end portion that can stably electrically and physically connect a wire to a conductive member. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional diagram of a coil element.

[0016] Figure 2 yes Figure 1 II is a cross-sectional view of the bent terminal and is a diagram showing the state after clamping.

[0017] Figure 3 yes Figure 1 II is a cross-sectional view of the bent terminal and is a diagram showing the state before clamping.

[0018] Figure 4 yes Figure 1 II is a cross-sectional view of the bent terminal and is a diagram of the bent terminal of the first variant.

[0019] Figure 5 It is a diagram showing a bent terminal according to a second modified example.

[0020] Figure 6 It is a diagram showing a bent terminal according to a third modified example. DETAILED DESCRIPTION

[0021] Hereinafter, embodiments of the present invention will be described based on the drawings.

[0022] In addition, the embodiment described below is only an example for easily understanding the present invention, and does not limit the present invention. That is, for the shape, size, configuration etc. of the member described below, certainly can change, improve under the situation that does not depart from the gist of the present invention, and, include its equivalent in the present invention.

[0023] In addition, the various components of the present invention do not need to exist separately and independently, and it is possible that multiple components are constituted as a single component, one component is formed by dividing it into multiple components, a certain component is a part of another component, a part of a certain component overlaps with a part of another component, etc.

[0024] In addition, in all the drawings, the same reference numerals are given to the same components, and repeated descriptions are appropriately omitted. In addition, in this specification, there are cases where the up and down directions are specified for description, but this is set for convenience in order to explain the relative relationship of the components, and does not limit the direction of the product of the present invention when it is manufactured or used. In particular, in this embodiment, the installation direction is set to the upper direction and the opposite direction is set to the lower direction, which is not necessarily consistent with the up and down direction in the gravity direction.

[0025] <Overview of Coil Components>

[0026] First, the main reference Figure 1 to Figure 3 Next, the outline of the coil component 1 will be described.

[0027] Figure 1 It is a perspective view of the coil component 1 . Figure 2 yes Figure 1 II is a cross-sectional view of the bent terminal 6 and is a diagram showing the state after clamping, Figure 3 yes Figure 1 II is a cross-sectional view of the bent terminal 6 and is a diagram showing a state before clamping.

[0028] Figure 1The conductive member 5 is shown as a whole, and therefore the coil element 1 is shown in a state where the mounting surface on the substrate is located upward, that is, in a state opposite to the general mounting direction on the substrate. Figure 1 The up and down directions are recorded with reference to the up and down directions of FIG.

[0029] The electronic component (coil component 1 ) of the present embodiment includes a conductive wire 3 a having conductivity and a conductive member 5 having a bent terminal 6 for holding an end portion of the conductive wire 3 a .

[0030] The bent terminal 6 includes a base portion 6a that supports the conductor 3a, a folded portion 6b that is continuous with one end of the base portion 6a and is bent and folded back, and a bent portion 6c that is continuous with the folded portion 6b and is provided at the top end side that is opposite to the base portion 6a.

[0031] The lead wire 3a is sandwiched between the base portion 6a and the folded portion 6b or the bent portion 6c.

[0032] The bent portion 6c is bent toward the base portion 6a with respect to the tangential direction of the folded portion 6b, and a gap between the bent portion 6c and the base portion 6a is smaller than the line width of the conductive wire 3a.

[0033] The "boundary" between the folded portion 6b and the bent portion 6c is a portion of the bent terminal 6 where the curvature changes at a position closer to the top end than the folding point of the folded portion 6b, and refers to a virtual plane ( Figure 2 The top end of the folded portion 6b (in this embodiment, the top end of the straight portion 6f discussed later) of the outer surface (upper surface) of the bent terminal 6 when observed in a direction perpendicular to the plane (including the up and down directions and the left and right directions within the plane) (the width direction of the bent terminal 6).

[0034] The “tangent direction of the folded portion 6b” refers to the tangent direction at the tip end of the folded portion 6b (the boundary with the bent portion 6c), and in the present embodiment, refers to the extending direction of the straight portion 6f described later.

[0035] In addition, for example, Figure 4 Differently, in a structure in which the folded portion 6b does not include a straight portion 6f but is bent at a predetermined curvature at the top from the folding point, for the portion bent at the predetermined curvature, the top of the portion bent at a relatively high curvature toward the side close to the base portion 6a is the folded portion 6c.

[0036] In this specification, the bent portion 6c does not refer to only the portion where the inclination changes from the folded portion 6b in the bent terminal 6, but refers to the portion from the portion where the inclination changes with respect to the folded portion 6b to the tip.

[0037] That is, if there is a portion extending linearly at the distal end of the portion where the inclination changes from the folded portion 6b, the bent portion 6c is configured to include the portion extending linearly. This also applies to the bent portions 16c and 26c discussed later.

[0038] Regarding the above-mentioned “base portion 6a supporting the conductive wire 3a”, the base portion 6a is not limited to always supporting the conductive wire 3a.

[0039] That is, the base portion 6a may be provided at a position to restrict the movement of the lead wire 3a, provided separately from the lead wire 3a, and may come into contact with and support the lead wire 3a after the clamping step.

[0040] The above “gap between the bend 6c and the base 6a is smaller than the line width of the conductor 3a” includes a case where there is no “gap between the bend 6c and the base 6a”. In other words, the bend 6c and the base 6a are in contact with each other.

[0041] The above-mentioned “wire width” refers to the wire diameter in the case of a round wire and refers to the thickness (the length of the short side in the cross section of the flat wire) in the case of a flat wire.

[0042] For example, when the bent terminal 6 is not formed with the bent portion 6c, that is, when the portion closer to the top of the bent portion 6b extends in a straight line, when the bent terminal 6 is clamped, the portion closer to the top of the bent portion 6b of the bent terminal 6 contacts the wire 3a at one point when viewed from the side. And, depending on the clamping amount, the point contact portion deviates, and the pressing load from the bent terminal 6 to the wire 3a tends to be always applied to the outside, and the wire 3a may deviate to the outside and fall off the bent terminal 6.

[0043] According to the above configuration, the bent portion 6c bent toward the base portion 6a with respect to the tangential direction of the folded portion 6b is provided, so that the bent portion 6c functions as a stopper for restricting the movement of the lead wire 3a.

[0044] That is, when the bending terminal 6 is bent (clamped), even if the wire 3a is squeezed out from the folded portion 6b or bent portion 6c of the bending terminal 6, the bent portion 6c can prevent the wire 3a from falling out from between the base portion 6a and the folded portion 6b or bent portion 6c.

[0045] In this embodiment, the electronic component of the present invention is described by taking the coil component 1 as a common mode choke coil as an example, but is not limited to such a structure. For example, the present invention can be applied to all electronic components having bent terminals for holding conductive wires in addition to the coil component 1.

[0046] The wire end holding method of the present embodiment is characterized in that it comprises: a configuration step, in which the above-mentioned electronic component (coil component 1) is prepared, and the wire 3a is passed between the top end of the bent terminal 6 and the base portion 6a and configured between the base portion 6a and the folded portion 6b or the bent portion 6c; and a clamping step, which is after the configuration step, in which the bent terminal 6 is clamped so that the wire 3a is flattened between the folded portion 6b or the bent portion 6c and the base portion 6a.

[0047] The gap between the bent portion 6c and the base portion 6a during the arrangement step is larger than the line width of the wire 3a, and the gap between the bent portion 6c and the base portion 6a after the clamping step is smaller than the line width of the wire 3a.

[0048] According to the above structure, the gap between the bent portion 6c and the base portion 6a during the arrangement process is larger than the line width of the wire 3a, so the wire 3a can be smoothly arranged in the arrangement process. In addition, since the gap between the bent portion 6c and the base portion 6a after the clamping process is smaller than the line width of the wire 3a, the wire 3a can be prevented from falling off between the base portion 6a and the folded portion 6b or the bent portion 6c after the clamping process.

[0049] That is, by forming the bent portion 6c in the bent terminal 6 (by providing a portion bent toward the base portion 6a before the clamping step), the bent portion 6c can function as a stopper that restricts movement of the lead wire 3a.

[0050] In addition, the folded portion 6b includes a linear portion 6f extending linearly at the top portion folded upward from the base portion 6a side.

[0051] The straight portion 6f of the folded portion 6b extends straightly while being inclined obliquely downward from the base end side toward the tip end side, in other words, being inclined downward so as to approach the base portion 6a.

[0052] The inclination angle of the straight portion 6f is preferably 2 degrees or more and 30 degrees or less, and more preferably 5 degrees or more and 25 degrees or less, relative to the upper surface of the base portion 6a (a horizontal surface in contact with the lead wire 3a).

[0053] The length of the straight portion 6f is preferably 1 to 5 times the line width of the conductor 3a (in the case of a flat wire, the length in the width direction (longitudinal direction in the cross section of the flat wire)), and more preferably 1.5 to 3 times.

[0054] According to the above structure, due to the clamping from the straight portion 6f, the straight portion 6f and / or the bent portion 6c having the downwardly inclined wall surface can clamp the wire 3a to the rear side (the turning point side of the turning portion 6b) where the U-turn is made toward the turning portion 6b. Figure 2The wire 3a is always elastically forced. The wire 3a abuts against the wall surface, and the wire 3a does not swing in the bending space of the bending portion 6b. Therefore, the holding position of the wire 3a of each product individual does not fluctuate but is stable, and the operator or the operating device can easily cut the wire 3a according to the end of the conductive member 5 and easily determine the position of laser irradiation.

[0055] In particular, by making the portion that holds the wire 3a the straight portion 6f or the straight portion in the bent portion 6c, it is easy to apply a load in the clamping direction to the wire 3a between the base portion 6a and the straight portion 6f or the straight portion in the bent portion 6c, thereby increasing the holding force on the wire 3a and stabilizing the position of the wire 3a during laser irradiation as discussed later.

[0056] [Overall structure]

[0057] The coil element 1 of this embodiment comprises: a drum core 2; a coil 3, which is composed of a conductive wire 3a wound around the central part of the drum core 2; an I core 4, which is connected to both ends of the drum core 2 and forms a magnetic circuit together with the drum core 2; and a conductive member 5, which is connected to the end of the conductive wire 3a.

[0058] Four conductive members 5 are provided at the four corners of the upper surface of the coil element 1, respectively, and have bent terminals 6 for clamping the ends of the wires 3a of the coil 3 on the outer side in the width direction perpendicular to the axial direction of the coil 3. The conductive member 5 includes: a mounting plane located on the uppermost surface and mounted on the printed circuit board; a bridge portion extending from the mounting plane to the outer side and downward in the width direction; and a bent terminal 6 connected to the bridge portion.

[0059] [Terminal]

[0060] Main reference Figure 2 and Figure 3 Next, the bent terminal 6 will be described.

[0061] The bent terminal 6 comprises: a base portion 6a, which carries the conductive wire 3a and extends horizontally from the lower end of the bridging portion; a folded portion 6b, which folds back from the inside to the outside of the base portion 6a in the width direction of the coil element 1 (in the horizontal plane, in a direction perpendicular to the axial direction of the coil 3); and a bent portion 6c, which is located closer to the top end side than the folded portion 6b.

[0062] exist Figure 1 The four corners of the upper surface of the coil element 1 are welded by welding the end of the wire 3a and the ends of the conductive member 5 on both sides of the axial direction. Figure 1 At both outer ends of the conductive member 5 in the axial direction, bent terminals 6 are formed before welding, but melted by welding to form the above-mentioned solder balls.

[0063] However, the structure is not limited to this, and the bent terminal 6 is not limited to Figure 1 In the case where two bent terminals 6 are formed at each of the four corners of the upper surface of the coil component 1, only one bent terminal may be formed. Furthermore, for example, only two bent terminals 6 may be formed on the coil component 1.

[0064] Figure 2 The bending angle θ of the bent portion 6c shown is preferably not less than 25 degrees and not more than 45 degrees with respect to the tangent direction of the folded portion 6b (a portion of the folded portion 6b adjacent to the bent portion 6c).

[0065] In this embodiment, the folding portion 6b has a straight portion 6f, and the bending portion 6c also has a straight portion. The bending angle θ refers to the angle of the straight portion in the bending portion 6c relative to the extension direction of the straight portion 6f of the folding portion 6b (the same as the tangent direction of the portion adjacent to the bending portion 6c).

[0066] According to the above structure, the bending portion 6c (the first bending portion 16d discussed later) is within this angle range, thereby limiting the movement range of the wire 3a, and even when the top end of the bent terminal 6 abuts against the base portion 6a, the reaction force generated during the abutment is suppressed, thereby preventing interference with the clamping operation.

[0067] Specifically, the "tangent direction of the folded portion 6b" refers to the tangent direction of the outer surface of the folded portion 6b (the upper surface of the side pressed by the punch of the clamping machine not shown) when observed from a direction perpendicular to an imaginary plane including the extension direction of the folded portion 6b and the bending portion 6c.

[0068] However, the present invention is not limited to such a structure, and as long as the purpose is to limit the position of the conductive wire 3a, the bending angle of the bending portion 6c may be perpendicular to the tangent direction of the folded portion 6b.

[0069] The length of the bent portion 6c is preferably 0.5 times or more and 2 times or less, preferably 1 time or more, and more preferably 1.5 times or less, the thickness of the bent portion 6c.

[0070] Here, “the length of the bent portion 6 c ” refers to the length of the central portion of the bent portion 6 c in the thickness direction.

[0071] For example, the thickness of the bent portion 6c (plate thickness of the bent terminal 6) of the present embodiment is 0.1 mm, and the length of the bent portion 6c is 0.15 mm.

[0072] According to the above structure, the movement of the wire 3a can be easily restricted by making the length of the bend 6c more than 0.5 times the thickness of the bend 6c, and the protrusion can be suppressed by making the length of the bend 6c less than 2 times the thickness of the bend 6c.

[0073] In addition, if the size of the bending angle of the bent portion 6c with respect to the tangent line of the folded portion 6b is increased, the bent portion 6c may be made shorter than the above-mentioned length.

[0074] The thickness of the folded portion 6b is preferably 1.5 times or more and 3 times or less the diameter of the conductive wire 3a.

[0075] For example, the diameter of the wire 3a is preferably 0.02 mm to 0.06 mm. In addition, the wire 3a of this embodiment is a round wire, but it is not limited to a round wire and may be a flat wire. In the case of a flat wire, the diameter of the wire 3a is replaced by the thickness of the wire 3a (the length in the vertical direction).

[0076] According to the above structure, the thickness of the folded portion 6b is more than 1.5 times the diameter of the conductor 3a, so that the conductor 3a can be properly held. The thickness of the folded portion 6b is less than 3 times the diameter of the conductor 3a, so that the bending portion 6c formed integrally with the folded portion 6b can be easily bent when clamped.

[0077] [Manufacturing method]

[0078] Next, a method for manufacturing the bent terminal 6 that holds the conductive wire 3a will be described.

[0079] The plurality of conductive members 5 are formed into a ring-shaped member (not shown). Figure 3 The bent terminal 6 has a bent portion 6c in the state shown.

[0080] Specifically, the punching process is performed by placing a jig on the lower side of the folded portion 6b above the base portion 6a using a clamping machine (not shown) and pressing the punch of the clamping machine against the bent portion 6c from above to bend the bent portion 6c.

[0081] The conductive member 5 is bonded to the drum core 2 (ferrite), and the drum core 2 is wound to form a coil 3 (two coils 3 in this embodiment). The lead wire 3a (four lead wires 3a in this embodiment) serving as the terminal of the coil 3 is disposed between the base portion 6a and the bent portion 6c of the bent terminal 6.

[0082] The wire 3a pulled out from the coil 3 is temporarily fixed to a jig (not shown) located outside the conductive member 5. While the wire 3a is fixed by the jig (not shown), the folded portion 6b and the bent portion 6c of the bent terminal 6 are clamped by stamping. By this clamping, the wire 3a is clamped between the bent portion 6b and / or the bent portion 6c and the base portion 6a. That is, due to the clamping process, the folded portion 6b or the bent portion 6c is bent and deformed to a position where the wire 3a is flattened by the pressure from the folded portion 6b or the bent portion 6c. By setting in this way, the electrical connection state between the wire 3a and the conductive member 5 can be stably maintained.

[0083] While the wire 3a is held by the clamp, the fixation by the jig (not shown) is released, the excess length of the wire 3a is cut, and then the end of the conductive member 5 and the tip of the wire 3a are irradiated with laser to fuse them together to form a solder ball.

[0084] For bent terminal 6, Figure 3 In the state before clamping shown, the gap between the lower end of the bent portion 6c and the upper surface of the base portion 6a is larger than the diameter of the conductive wire 3a.

[0085] Before and after the clamping process, the bending change ratio of the folded portion 6b of the bent terminal 6 in the axial direction of the bent terminal 6 is greater than the bending change ratio of the bent portion 6c. Furthermore, the bending change ratio of the folded portion 6b after the clamping process is greater than the bending change ratio of the folded portion 6b before the clamping process.

[0086] [First Modification]

[0087] Next, refer to Figure 4 Next, a first modification example will be described. Figure 4 yes Figure 1 II is a cross-sectional view of the bent terminal 6 and is a diagram showing the bent terminal 6 of the first modified example.

[0088] like Figure 4 As shown, in the bent terminal 6 of the first modified example, the conductor 3a is held by three parts: the base portion 6a, the folded portion 6b, and the bent portion 6c. The conductor 3a is held by the base portion 6a, the folded portion 6b, and the bent portion 6c.

[0089] According to the above configuration, the lead wire 3a can be placed in a state where it does not hang loose, and the lead wire 3a can be firmly held by the base portion 6a, the folded portion 6b, and the bent portion 6c.

[0090] That is, by clamping the wire 3a at three locations, the base portion 6a, the folded portion 6b and the bent portion 6c can restrict the vertical movement of the wire 3a, while the folded portion 6b and the bent portion 6c can restrict the horizontal movement of the wire 3a.

[0091] [Second Modification]

[0092] Next, the main reference Figure 5 Next, the bent portion 16c according to the second modification will be described. Figure 5 It is a diagram showing a bent terminal 16 according to a second modification.

[0093] The bending portion 16c of the bending terminal 16 has, in addition to the first bending portion 16d bent toward the side close to the base portion 6a, a second bending portion 16e located closer to the top end than the first bending portion 16d and bent toward the side opposite to the bending direction of the first bending portion 16d.

[0094] Furthermore, in the bent portion 16c, a second bent portion 16e is formed along the base portion 6a.

[0095] The first bent portion 16d in the bent terminal 16 does not refer to only the portion where the inclination changes from the folded portion 6b, but refers to the portion from the portion where the inclination changes relative to the folded portion 6b to the second bent portion 16e. This also applies to the first bent portion 26d described later.

[0096] The second bent portion 16e does not refer to only the portion where the inclination changes from the first bent portion 16d, but refers to the portion from the portion where the inclination changes from the first bent portion 16d to the tip. This also applies to the second bent portion 26e described later.

[0097] The tip end portion (second bent portion 16e) of the bent portion 16c of this example is pressed against the base portion 6a by a punch of a clamping machine (not shown) and is bent in a direction along the base portion 6a.

[0098] Specifically, the above-mentioned “second bent portion 16e bent in the direction opposite to the bending direction of the first bent portion 16d” means that the second bent portion 16e is bent in the direction opposite to the bending direction of the first bent portion 16d based on the tangent direction of the folded portion 6b (that is, as the direction close to the base portion 6a). Figure 5 The side opposite to the downward direction (based on the tangent direction of the first bent portion 16d, which is the upper side and Figure 5 The middle is horizontally oriented).

[0099] According to the above configuration, the second bent portion 16e is arranged along the base portion 6a, so that the bent portion 16c can hold the lead wire 3a more stably, and the lead wire 3a can be prevented from falling out of the gap between the bent portion 16c and the base portion 6a.

[0100] Such a bent portion 16c is formed by pressing a punch (not shown) used for clamping against the second bent portion 16e until the second bent portion 16e presses the base portion 6a.

[0101] The bent portion 16c is preferably pressed against the base portion 6a in a manner that the bent portion 16c is in contact with the base portion 6a. In addition, "contact" is not limited to point contact or line contact. Figure 5 As shown, the case of surface contact is also regarded as the case of abutment.

[0102] According to the above configuration, the lead wire 3a is unlikely to come out from the gap between the bent portion 16c and the base portion 6a.

[0103] In this example, the length of the first bent portion 16d is substantially the same as the length of the second bent portion 16e, but the length of the first bent portion 16d may be different from the length of the second bent portion 16e.

[0104] [Third Modification]

[0105] Next, refer to Figure 6 Next, a bent terminal 26 according to a third modified example will be described. Figure 6 It is a diagram showing a bent terminal 26 according to a third modified example.

[0106] The bent terminal 26 of this example includes, in addition to the first bent portion 26d bent toward the side close to the base portion 6a, a second bent portion 26e located closer to the top end than the first bent portion 26d and bent toward the side opposite to the bending direction of the first bent portion 26d. The lower end of the top end of the second bent portion 26e is pressed against the base portion 6a in a manner of abutting against (in a manner of line contact with) the base portion 6a.

[0107] Specifically, the above-mentioned “second bent portion 26e bent in the direction opposite to the bending direction of the first bent portion 26d” means that the second bent portion 26e is bent in the direction opposite to the bending direction of the first bent portion 26d based on the tangent direction of the folded portion 6b (that is, as the direction close to the base portion 6a). Figure 6 The side opposite to the downward direction (based on the tangent direction of the first bent portion 26d, the upper side, Figure 6 The first bent portion 26d is bent in a bending direction (in a direction inclined obliquely downward at an angle smaller than the angle of the first bent portion 26d relative to the base portion 6a).

[0108] The second bent portion 26e of the present embodiment is preferably formed longer than the first bent portion 26d. Specifically, it may be formed to be 1.5 times the length of the first bent portion 26d.

[0109] In the above structure, the lower end of the front end of the second bent portion 26e is also pressed against the base portion 6a, so that the lead wire 3a is unlikely to escape from the gap between the bent portion 26c and the base portion 6a.

[0110] The above-described embodiments and modifications include the following technical ideas.

[0111] (1) An electronic component, characterized in that:

[0112] The electronic component has:

[0113] A conductor having electrical conductivity; and

[0114] a conductive member having a bent terminal for holding an end of the conductive wire,

[0115] The bent terminal has:

[0116] a base portion supporting the wire;

[0117] a folded portion which is continuous with one end side of the base portion and is bent and folded back; and

[0118] a bent portion which is continuous with the folded portion and is provided to the top end side which is the side opposite to the base portion,

[0119] The wire is sandwiched between the base portion and the folded portion or between the base portion and the bent portion.

[0120] The bent portion is bent toward a side close to the base portion relative to a tangential direction of the folded portion, and a gap between the bent portion and the base portion is smaller than a line width of the conductive wire.

[0121] (2) The electronic component according to (1), wherein

[0122] The wire is clamped by the base portion, the folded portion, and the bent portion.

[0123] (3) The electronic component according to (1) or (2), wherein:

[0124] The bending portion has, in addition to a first bending portion bent toward a side close to the base portion, a second bending portion, the second bending portion being located closer to the top end side than the first bending portion and bending toward a side opposite to a bending direction of the first bending portion.

[0125] In the bent portion, the second bent portion is formed along the base portion.

[0126] (4) The electronic component according to any one of (1) to (3), wherein

[0127] The bent portion is in pressure contact with the base portion so as to abut against the base portion.

[0128] (5) The electronic component according to any one of (1) to (4), wherein

[0129] The folded-back portion has a straight line portion extending toward a side close to the base portion as it moves from the base end side toward the tip end side at a top portion folded back from the base portion.

[0130] (6) The electronic component according to (5), wherein

[0131] The straight portion and / or the bent portion elastically urges the conductive wire toward a folding point of the folded portion.

[0132] (7) The electronic component according to (5) or (6), wherein

[0133] The inclination angle of the straight portion is greater than or equal to 2 degrees and less than or equal to 30 degrees with respect to the surface of the base portion in contact with the lead wire.

[0134] (8) The electronic component according to any one of (5) to (7), wherein

[0135] The length of the straight portion is not less than 1 time and not more than 5 times the line width of the conductive line.

[0136] (9) The electronic component according to any one of (1) to (8), wherein

[0137] The bending angle of the bent portion is greater than or equal to 25 degrees and less than or equal to 45 degrees with respect to the tangent direction of the folded portion.

[0138] (10) The electronic component according to any one of (1) to (9), wherein

[0139] The length of the bent portion is not less than 0.5 times and not more than 2 times the thickness of the bent portion.

[0140] (11) The electronic component according to any one of (1) to (10), wherein

[0141] The thickness of the folded portion is not less than 1.5 times and not more than 3 times the diameter of the conductive wire.

[0142] (12) A method for holding a wire end, characterized in that:

[0143] The wire end holding method comprises:

[0144] The configuration step is to prepare an electronic component, wherein the electronic component comprises:

[0145] A conductor having electrical conductivity; and

[0146] a conductive member having a bent terminal for holding an end of the conductive wire,

[0147] The bent terminal has:

[0148] a base portion supporting the wire;

[0149] a folded portion which is continuous with one end side of the base portion and is bent and folded back; and

[0150] a bent portion which is continuous with the folded portion, is provided on the tip side which is the side opposite to the base portion, and is bent toward the base portion side with respect to the tangential direction of the folded portion,

[0151] The arrangement step allows the wire to pass between the tip of the bent terminal and the base portion, and arranges the wire between the base portion and the folded portion or between the base portion and the bent portion; and

[0152] a clamping step, after the arrangement step, clamping the bent terminal so that the wire is compressed between the folded portion and the base portion or between the bent portion and the base portion,

[0153] The gap between the bent portion and the base portion during the configuration step is larger than the line width of the conductive wire.

[0154] The gap between the bent portion and the base portion after the clamping step is smaller than the line width of the conductive wire.

[0155] Description of Reference Numerals

[0156] 1. Coil element (electronic component); 2. Drum core; 3. Coil; 3a. Conducting wire; 4. I core; 5. Conductive member; 6. Bend terminal; 6a. Base portion; 6b. Folded portion; 6c. Bend portion; 6f. Straight portion; 16. Bend terminal; 16c. Bend portion; 16d. First bend portion; 16e. Second bend portion; 26. Bend terminal; 26c. Bend portion; 26d. First bend portion; 26e. Second bend portion.

Claims

1. An electronic component, characterized in that: The electronic component has: A conductor having electrical conductivity; and a conductive member having a bent terminal for holding an end of the conductive wire, The bent terminal has: a base portion supporting the wire; a folded portion which is continuous with one end side of the base portion and is bent and folded back; and a bent portion which is continuous with the folded portion and is provided to the top end side which is the side opposite to the base portion, The wire is sandwiched between the base portion and the folded portion or between the base portion and the bent portion. The bent portion is bent toward a side close to the base portion relative to a tangential direction of the folded portion, and a gap between the bent portion and the base portion is smaller than a line width of the conductive wire.

2. The electronic component according to claim 1, wherein The wire is clamped by the base portion, the folded portion, and the bent portion.

3. The electronic component according to claim 1 or 2, wherein: The bending portion has, in addition to a first bending portion bent toward a side close to the base portion, a second bending portion, the second bending portion being located closer to the top end side than the first bending portion and bending toward a side opposite to a bending direction of the first bending portion. In the bent portion, the second bent portion is formed along the base portion.

4. The electronic component according to any one of claims 1 to 3, wherein The bent portion is in pressure contact with the base portion so as to abut against the base portion.

5. The electronic component according to any one of claims 1 to 4, wherein The folded-back portion has a straight line portion extending toward a side close to the base portion as it moves from the base end side toward the tip end side at a top portion folded back from the base portion.

6. The electronic component according to any one of claims 1 to 5, wherein The bending angle of the bent portion is greater than or equal to 25 degrees and less than or equal to 45 degrees with respect to the tangent direction of the folded portion.

7. The electronic component according to any one of claims 1 to 6, wherein The length of the bent portion is not less than 0.5 times and not more than 2 times the thickness of the bent portion.

8. The electronic component according to any one of claims 1 to 7, wherein The thickness of the folded portion is not less than 1.5 times and not more than 3 times the diameter of the conductive wire.

9. A method for holding a wire end, characterized in that: The wire end holding method comprises: The configuration step is to prepare an electronic component, wherein the electronic component comprises: A conductor having electrical conductivity; and a conductive member having a bent terminal for holding an end of the conductive wire, The bent terminal has: a base portion supporting the wire; a folded portion which is continuous with one end side of the base portion and is bent and folded back; and a bent portion which is continuous with the folded portion, is provided on the tip side which is the side opposite to the base portion, and is bent toward the base portion side with respect to the tangential direction of the folded portion, The arrangement step allows the wire to pass between the top end of the bent terminal and the base portion, and arranges the wire between the base portion and the folded portion or between the base portion and the bent portion; and a clamping step, after the arrangement step, clamping the bent terminal so that the wire is compressed between the folded portion and the base portion or between the bent portion and the base portion, The gap between the bent portion and the base portion during the configuration step is larger than the line width of the conductive wire. The gap between the bent portion and the base portion after the clamping step is smaller than the line width of the conductive wire.

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