JP2005286182A - Electronic component and manufacturing method thereof - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent breakdown of terminal of the coil of an electronic component. <P>SOLUTION: The electronic component 10 comprises a base board 13 for holding the coil 12, a terminal 18 mounted to the base board 13, and a slackening adjusting portion 20 which has the function to connect a terminal 21 of the coil 12 to the terminal 18, under the condition that a tension is held and also can alleviate or absorb such tension after the connection. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an electronic component having a winding and a method for manufacturing the electronic component.

  Conventionally, a transformer, which is a kind of electronic component, is composed of a winding and a winding frame with terminals. The winding frame with a terminal has a winding core, a terminal support part, and a terminal part. As a method for connecting a winding to a terminal portion of a general winding frame with a terminal, a method is adopted in which the winding is drawn from the winding core and directly connected to the terminal portion.

  As a winding frame with a terminal constituting a transformer, one as shown in Patent Document 1 is known. FIG. 7 shows a perspective view of a terminal-equipped winding frame 80 described in Patent Document 1. FIG. FIG. 8 shows an enlarged perspective view of the periphery of the terminal portion 83 of the terminal-equipped winding frame 80. As shown in FIG. 7, the terminal-equipped winding frame 80 includes a winding core 81, flanges 82 a and 82 b attached to both ends of the winding core 81, a terminal portion 83, a winding lead groove 84 and a protruding portion 85 a, 85b, and an inclined portion 87 is provided between the surface of the terminal support 86 on which the terminal portion 83 is embedded and the surface on which the protrusions 85a and 85b are provided (see FIG. 8). The inclined portion 87 is a concave groove, and the inclined angle formed by the inclined portion 87 with respect to the pin terminal planting surface 88 is an obtuse angle.

  FIG. 9 is an enlarged perspective view of the periphery of the terminal portion 83 of the terminal-equipped reel 80 when the winding 89 is applied to the terminal-equipped reel 80. As for the connection of the winding 89 to the terminal portion 83, the winding 89 pulled out from the winding core 81 is entangled with the terminal portion 83 through the winding lead-out groove 84, the protruding portion 85b and the inclined portion 87, and the winding is again wound. 89 is performed by being wound around the winding core 81 through the inclined portion 87, the protruding portion 85 a and the winding lead-out groove 84.

JP-A-8-17654 (Abstract)

  In the winding frame 80 with a terminal shown in Patent Document 1, the winding 89 is prevented from being detached from the terminal support portion 86 by providing the inclined portion 87, but the winding 89 is pulled and entangled with the terminal portion 83. Therefore, when the binding work is completed, the wound winding 89 is in a tensioned state. Since the transformer having such a structure is tensioned, the winding 89 is easily broken when the winding 89 receives a thermal shock. That is, when the electronic component such as a transformer is used / not used, the winding 89 and the winding core 81 expand / contract as the temperature changes. At this time, a force greater than the above tension is applied to the winding 89. Yes, breakage may occur.

  The present invention has been made on the basis of the above circumstances, and an object thereof is to provide an electronic component that is difficult to be disconnected and a method for manufacturing the electronic component.

  In order to solve the above-mentioned problems, the electronic component of the present invention has a base for holding a winding, a terminal attached to the base, and a function for connecting the terminal of the winding to the terminal while holding the tension. And a slack adjusting part that reduces or absorbs tension after connection.

  In this case, after attaching the winding to the base and connecting the end of the winding to the terminal part via the slack adjusting part, the slack adjusting part is displaced or removed to remove the connection after the connection. The tension of the terminal can be eased. Therefore, the end of the winding can be connected to the terminal portion in a loose state.

  Furthermore, in addition to the above-described invention, in another invention, the slack adjusting part is configured by a member that maintains its shape in an unheated state and is thermally melted by heating. In such a configuration, after the winding is connected to the terminal portion, the looseness adjusting portion can be dissolved and removed, and the tension at the end of the connected winding can be easily relaxed.

  In addition to the above-mentioned invention, the other invention is such that the slack adjusting portion is a protruding portion that can be bent, cut or removed. When configured in this way, after connecting the winding to the terminal portion, the tension at the end of the connected winding can be relaxed by an easy operation of displacing or removing the slack adjusting portion.

  Furthermore, in another invention, in addition to the above-described invention, the slack adjustment part is made of an elastic body. In such a configuration, when the winding is connected to the terminal portion, the end of the winding is in contact with the slack adjustment portion, so that the tension is applied to the end of the winding. By using the elastic body, the tension applied to the end of the winding at the time of connection can be relaxed. In addition, even if thermal contraction is applied to the winding, an increase in tension can be suppressed by the elastic force of the elastic body.

  Further, in addition to the above-described invention, another invention further includes the terminal of the winding being detoured through the slack adjusting unit and connected to the terminal unit, and after connecting to the terminal unit, the slack adjusting unit is displaced or removed. Thus, the end of the winding is connected to the terminal portion in a slack state.

  When configured in this way, even after the winding ends are connected, the ends of the windings are prevented from being tensioned even if the windings are thermally expanded and then radiated and thermally contracted. it can. Therefore, breakage due to thermal shock at the end of the winding can be prevented.

  In addition, the electronic component according to another invention is connected to the terminal part with the base holding the winding, the terminal part attached to the base and the tension, and the tension is reduced or absorbed after the connection. And a terminal portion of the winding which is in a state to be made.

  In such a configuration, after the windings are connected, the ends of the windings are loosened. Therefore, even if the connected winding is thermally expanded and then radiated and thermally contracted, it is possible to avoid applying tension to the end of the winding. Can be prevented.

  The electronic component manufacturing method of the present invention is a method for manufacturing an electronic component in which a terminal of a winding held on a base is connected to a terminal portion, and the terminal is bypassed and held in tension. The tension of the terminal is reduced by displacement or removal of a member that is connected to the part and detoured after the connection.

  When this manufacturing method is adopted, since the end of the winding can be connected to the terminal portion in a slack state, even after the connection, even if the winding is thermally expanded and then radiated and thermally contracted It is possible to avoid applying tension to the end of the winding. Therefore, breakage due to thermal shock at the end of the winding can be prevented.

  According to the present invention, it is possible to prevent the end of the winding of the electronic component from breaking.

  Hereinafter, an electronic component 10 according to a first embodiment of the present invention will be described with reference to FIGS. 1 and 2. 1A and 1B are views showing the electronic component 10 before the slack adjusting unit 20 is removed. FIG. 1A is a front view thereof, and FIG. 1B is a side view thereof. 2A and 2B are diagrams showing the electronic component 10 after the slack adjusting unit 20 is removed, in which FIG. 2A is a front view thereof and FIG. 2B is a side view thereof.

  As shown in FIG. 1, the electronic component 10 includes a coil winding frame 11 and a winding 12. The coil winding frame 11 includes a base 13, a core 14, a terminal portion 18, and a slack adjustment unit 20. The coil winding frame 11 itself can also be an electronic component. Further, on the upper side of the core 14 in FIG. 1, a pressing means for pressing the winding 12 from above, such as a not-illustrated collar or core member, is provided.

  A winding core 14 is provided on the base 13 of the coil winding frame 11, and a terminal portion 18 is attached to the base 13. A slack adjustment unit 20 is disposed between the core 14 of the base 13 and the terminal unit 18 so that the winding 12 bypasses when the winding 12 is connected to the terminal unit 18. The slack adjustment unit 20 is provided so as to protrude in a direction away from the upper end surface of the base 13. The slack adjusting unit 20 is configured to be bent, cut, or removable.

  FIG. 1 shows the electronic component 10 before the slack adjusting unit 20 is removed. A winding 12 is wound around the winding core 14, and one end of the winding 12 drawn from the winding core 14. 21 (hereinafter simply referred to as the terminal 21) is connected to the terminal unit 18 so as to bypass the slack adjustment unit 20. In addition, the terminal of the other end of the coil | winding 12 is connected to the other terminal part (illustration omitted). The terminal 21 of the winding 12 is in contact with the slack adjusting unit 20 with a tension, and is connected to the terminal unit 18 with the tension maintained.

  FIG. 2 shows a state of the electronic component 10 after removing the slack adjusting unit 20. As described above, the winding 12 is wound around the core 14. However, in FIG. 2, by removing the slack adjusting unit 20, the winding 12 is connected to the terminal unit 18 in a slack state by removing the tension applied to the terminal 21.

  Next, a method for manufacturing the electronic component 10 will be described.

  First, the winding 12 is formed by winding a coil wire around the winding core 14. After the winding 12 is formed, the terminal 21 is wound around the terminal portion 18. Thereafter, the terminal 21 is fixed to the terminal portion 18 by soldering the wound portion or the like, thereby completing the first stage connection. Thereafter, the second stage connection is completed by deforming or removing the slack adjusting unit 20.

  A method for connecting the terminal 21 to the terminal unit 18 will be described in more detail. The coil winding frame 11 is provided with a slack adjusting portion 20 at a position between the winding 12 and the terminal portion 18 and when the winding 12 is bypassed when the winding 12 is connected to the terminal portion 18. It is. The terminal 21 of the winding 12 is detoured via the slack adjustment unit 20 and connected to the terminal unit 18. In this state, the terminal 21 of the winding 12 is connected to the terminal part 18 in contact with the slack adjusting part 20, and the terminal 21 is in a tensioned state. In this state, the first stage connection work is completed.

  Thereafter, the slack adjustment unit 20 is deformed or removed by bending, cutting, or removing the slack adjustment unit 20 while the terminal 21 is in tension. By doing so, the terminal 21 of the winding 12 is loosely contacted with the looseness adjusting portion 20 or not at all, the tension applied to the terminal 21 is removed, and the terminal 21 of the winding 12 is in a slack state. Thus, the second stage connection is completed.

  In the electronic component 10 configured as described above, when connecting the winding 12 to the terminal portion 18 between the core 14 and the terminal portion 18, the base is configured to bypass the terminal 21 of the winding 12. 13 is provided with a slack adjuster 20. Therefore, the terminal 21 bypasses the slack adjustment unit 20 and is connected to the terminal unit 18, and then the slack adjustment unit 20 is deformed or removed, whereby the tension applied to the terminal 21 of the winding 12 can be relaxed. . Therefore, the terminal 21 of the winding 12 is connected to the terminal portion 18 in a slack state.

  In the electronic component 10 according to the first embodiment, the terminal 21 of the winding 12 is connected to the terminal portion 18 in a slack state after the connection in the second stage is completed. For this reason, for example, even if the temperature of the electronic component 10 rises and the winding 12 once thermally expands, and then the winding 12 is thermally contracted due to heat dissipation of the winding 12, due to the slackness of the winding 12 The terminal 21 is not tensioned. Therefore, the electronic component 10 does not break the terminal 21 due to thermal shock.

  In the electronic component manufacturing method according to the first embodiment, the slack adjustment unit 20 is disposed between the winding 12 and the terminal unit 18, and the terminal 21 of the winding 12 is connected by the slack adjustment unit 20. The slack adjustment unit 20 is bent or removed after being bypassed and connected to the terminal unit 18. When the terminal 21 is connected to the terminal portion 18 by such a manufacturing method, the tension applied to the terminal 21 of the winding 12 can be removed by an easy operation of bending or removing the slack adjusting portion 20.

  Moreover, in the manufacturing method which concerns on 1st Embodiment, the slack adjustment part 20 is made into the protrusion part which can be bend | folded or cut or removed. By adopting such a configuration of the slack adjusting unit 20, it is possible to deform or remove the slack adjusting unit 20 by a simple method (bending, cutting or removing), and the terminal 21 of the winding 12 after the connection is made. Tension can be eased easily.

  Next, an electronic component 40 according to a second embodiment of the present invention will be described with reference to FIGS. 3A and 3B are diagrams showing the electronic component 40 before the slack adjusting unit 42 is removed, in which FIG. 3A is a front view thereof and FIG. 3B is a side view thereof. 4A and 4B are views showing the electronic component 40 after the slack adjustment unit 42 is removed, in which FIG. 4A is a front view thereof and FIG. 4B is a side view thereof. The same members and the same parts as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted or simplified.

  As shown in FIG. 3, the electronic component 40 includes a coil winding frame 41 and a winding 12. The coil winding frame 41 includes the base 13, the core 14, the terminal portion 18, and the slack adjustment unit 42. The coil winding frame 41 itself can also be an electronic component. Further, on the upper side in FIG. 3 of the core 14, a pressing means for pressing the winding 12 from above, such as a flange portion or a core member (not shown) is provided.

  In the second embodiment, similarly to the first embodiment, the winding core 14 is formed on the base 13 of the coil winding frame 41, and the terminal portion 18 is attached to the base 13. It has been. Further, a slack adjusting portion 42 is disposed between the core 14 of the base 13 and the terminal portion 18 so that the winding 12 is bypassed when the winding 12 is connected to the terminal portion 18. ing. In this embodiment, since the terminal 21 is disposed so as to straddle the slack adjustment unit 42, the length of the terminal 21 is longer than the case where there is no slack adjustment unit 42, and as a result, detouring is performed. It becomes. The slack adjusting unit 42 is composed of a member (material) that can be dissolved when heated (heated), such as wax or grease.

  In the electronic component 40, as in the case of the first embodiment, the terminal 21 at one end of the winding 12 is connected to the terminal part 18 via the slack adjusting part 42, and the terminal at the other end is connected to the other terminal. It is connected to the terminal part (not shown). The terminal 21 of the winding 12 is in a state of being tensioned by being connected to the terminal portion 18 while being in contact with the upper portion of the slack adjusting portion 42. After that, when the slack adjusting portion 42 is removed by heating, the terminal 21 of the winding 12 is connected to the terminal portion 18 in a slack state without being applied with tension as in the first embodiment. It becomes a state.

  The manufacturing method of the electronic component 40 is substantially the same as the manufacturing method of the electronic component 10. The difference is in the handling of the slack adjustment unit 42. As for the method of connecting the winding 12 to the terminal portion 18, as in the case of the first embodiment, the terminal 21 of the winding 12 is detoured via the slack adjustment portion 42 and connected to the terminal portion 18. In this state, the terminal 21 is connected to the terminal portion 18 so as to be in contact with the upper portion of the slack adjusting portion 42 as shown in FIG. 3B, and the terminal 21 is in a tensioned state. This state is the first stage connection completion state.

  Thereafter, in a state in which the terminal 21 is under tension, the slack adjusting unit 42 is dissolved and removed by applying heat to the slack adjusting unit 42. In the case of wax, the heat is a temperature at which the wax melts, and in the case of grease, the heat is a temperature at which the grease melts. By doing so, the tension applied to the terminal 21 is removed, and the terminal 21 of the winding 12 is connected to the terminal portion 18 in a loose state. This state is the second stage connection completion state. The melting (dissolution) temperature is preferably 40 to 300 ° C, more preferably 60 to 150 ° C in terms of ease of handling. Therefore, it is preferable to employ a member that melts at the above-described temperature as the material of the slack adjusting section 42.

  In the electronic component 40 configured as described above, when connecting the winding 12 to the terminal portion 18 between the core 14 and the terminal portion 18, the base is configured to bypass the terminal 21 of the winding 12. 13 is provided with a slack adjusting portion 42. Therefore, the terminal 21 bypasses the slack adjustment part 42 and is connected to the terminal part 18, so that the tension applied to the terminal 21 of the winding 12 is relaxed by heating and dissolving the slack adjustment part 42. be able to. Therefore, the terminal 21 of the winding 12 is connected to the terminal portion 18 in a slack state (that is, a state in which the winding 12 has slackness), and is strong against thermal shock.

  Further, in the manufacturing method according to the second embodiment, a dissolvable slack adjusting portion 42 made of wax or grease that can be dissolved when heat is applied is disposed between the winding 12 and the terminal portion 18. The terminal 21 of the winding 12 is bypassed by the slack adjusting unit 42 and connected to the terminal unit 18, and then the slack adjusting unit 42 is dissolved and removed. When the terminal 21 is connected to the terminal part 18 by such a manufacturing method, the tension applied to the terminal 21 of the winding 12 can be removed by an easy operation of heating and melting the slack adjusting part 42.

  As mentioned above, although each embodiment of this invention was described, this invention can be variously deformed besides this. This will be described below.

  The material of the slack adjusting unit 21 of the first embodiment described above may be an elastic body made of rubber or resin material instead of a hard member. Further, the slack adjustment unit 42 of the second embodiment may be an elastic body such as silicon rubber. When the slack adjusting portions 20 and 42 are made of an elastic body such as rubber or resin material, the tension applied to the terminal 21 when the terminal 21 of the winding 12 is connected to the terminal portion 18 via the slack adjusting portions 20 and 42 is also reduced. can do. Moreover, even when tension is further applied after connection, the tension is prevented from being applied (increased) as it is to the terminal 21 by the elastic force of the elastic body, and is resistant to thermal shock.

  Further, in the second embodiment described above, the slack adjusting part 42 whose upper end surface is soluble on the planar base 13 is provided, but a groove may be provided on the planar base 13. . When a groove is provided in the base 13, the slack adjustment part 42 after dissolution is poured into the groove, and the slack adjustment part 42 that can be dissolved can be easily removed.

  Further, in each of the above-described embodiments, the case where only the tension at one end of the winding 12 connected to the terminal portion 18 provided in the coil winding frames 11 and 41 is reduced by the slack adjusting portions 20 and 42 is shown. However, it is not limited to this. For example, as shown in FIGS. 5 and 6, two terminal portions 18a and 18b are provided, and the tension of the terminals 21a and 21b pulled out from both ends of the winding 12 connected to the terminal portions 18a and 18b is adjusted. The slack adjustment units 20a and 20b of the same type as the 20 and the slack adjustment units 42a and 42b of the same type as the slack adjustment unit 42 may be used for the reduction.

  Further, in each of the above-described embodiments, only one terminal portion 18 is provided in the coil winding frames 11 and 41. However, an intermediate tap is formed by adding a terminal portion to the coil winding frames 11 and 41, and the terminals. The terminal connected to the unit may also reduce the tension by using the slack adjustment unit. Further, in each of the above-described embodiments, one winding core 14 is provided on the coil winding frames 11, 41 and one winding 12 is held on the winding core 14. A plurality of 14 may be provided, the winding core 12 may hold the winding 12, and the terminal portion 18 may be provided so as to correspond thereto.

  Further, in each of the above-described embodiments, the single winding 12 is wound around the core 14 and the terminal 21 is connected to the terminal portion 18, but a plurality of windings are not limited to a single winding. A twist coil formed by twisting a bundle of windings may be used. In this way, even when a twist coil composed of a bundle of a plurality of windings is used, it is possible to prevent tension from being applied to the twist coil. Moreover, when a twist coil is used, even if one coil is cut, other coils are connected, and the coil can be prevented from being completely disconnected.

  Further, in each of the above-described embodiments, the slack adjusters 20 and 42 are provided on the flat portion of the base 13, but the present invention is not limited to this. For example, the slack adjusters 20 and 42 may be provided so as to protrude from the base 13, be provided on a holder such as a terminal block provided as a separate member, or may be provided on a part of the core that penetrates the core 14.

  Examples of the brazing material that can be melted when heated include copper brazing, silver brazing, beeswax, and paraffin. In addition to wax and grease, a wax, a resin material, an adhesive, or the like can be used as a member that can be dissolved when heat is applied.

  The electronic component of the present invention can be used in various electronic devices.

It is a figure which shows the state before removing the slack adjustment part in the electronic component which concerns on the 1st Embodiment of this invention, (a) is the front view, (b) is the side view. It is a figure which shows the state after removing the slack adjustment part in the electronic component which concerns on the 1st Embodiment of this invention, (a) is the front view, (b) is the side view. It is a figure which shows the state before removing the slack adjustment part in the electronic component which concerns on the 2nd Embodiment of this invention, (a) is the front view, (b) is the side view. It is a figure which shows the state after removing the slack adjustment part in the electronic component which concerns on the 2nd Embodiment of this invention, (a) is the front view, (b) is the side view. It is a figure which shows the modification of the electronic component which concerns on the 1st Embodiment of this invention, and shows the state before removing a slack adjustment part in the case of connecting the terminal of the both ends of a coil | winding via a slack adjustment part. It is a figure, (a) is the front view, (b) is the side view. It is a figure which shows the modification of the electronic component which concerns on the 2nd Embodiment of this invention, and shows the state before removing a slack adjustment part in the case of connecting the terminal of the both ends of a coil | winding via a slack adjustment part. It is a figure, (a) is the front view, (b) is the side view. It is a perspective view of the conventional winding frame with a terminal. It is an expansion perspective view of the terminal part periphery of the conventional winding frame with a terminal. It is an expansion perspective view of the terminal part periphery of the winding frame with a terminal at the time of winding to the conventional winding frame with a terminal.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10, 40 ... Electronic component 11, 41 ... Coil winding frame 12 ... Winding 13 ... Base 14 ... Core 18 ... Terminal part 20, 42 ... Slack adjustment part 21 ... Terminal

Claims (7)

A base for holding the winding;
A terminal portion attached to the base;
With the function of connecting the terminal of the winding to the terminal part while holding the tension, a slack adjustment part that reduces or absorbs the tension after connection,
An electronic component comprising:   2. The electronic component according to claim 1, wherein the slack adjusting unit is configured by a member that maintains its shape in a non-heated state and is thermally melted by heating.   The electronic component according to claim 1, wherein the slack adjusting portion is a protruding portion that can be bent, cut, or removed.   The electronic component according to claim 1, wherein the slack adjusting unit is made of an elastic body.   The terminal of the winding is detoured through the slack adjustment part and connected to the terminal part, and after being connected to the terminal part, the displacement or removal of the slack adjustment part causes the terminal part to The electronic component according to claim 1, wherein the ends of the windings are connected in a loose state. A base for holding the winding;
A terminal portion attached to the base;
A terminal portion of the winding that is connected to the terminal portion in a state of having tension and is reduced or absorbed after the connection;
An electronic component comprising: In the manufacturing method of the electronic component in which the terminal of the winding held on the base is connected to the terminal part,
Manufacturing of an electronic component characterized in that the terminal is detoured and connected to the terminal portion with tension, and the terminal tension is reduced by displacement or removal of the detoured member after connection. Method.

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