JP5381610B2 - coil - Google Patents

Description

  The present invention includes, for example, a terminal block provided with a coil used for an inductor, a transformer, etc., in particular a terminal having a tangled terminal portion, and a winding formed by winding a rectangular wire arranged on the terminal block, The present invention relates to a coil having a structure in which a starting end portion and a terminating end portion drawn out from the winding are respectively wound around and connected to the outer surface of the linking terminal portion corresponding thereto.

  Conventionally, the starting end (also referred to as the `` winding end '') and the terminal end (also referred to as the `` winding end '') of the windings mounted on the terminal block are each pulled out to the outside, and each pulled out end is used as a terminal block. A structure that is wound around and connected to the outer surface of the provided binding terminal portion is known.

  FIG. 17 shows an example of the prior art. In FIG. 17, the terminal block 100 is provided with a binding terminal portion 102 that protrudes outward from the terminal block 100 substantially parallel to the upper surface 101. In addition, a winding (not shown) made of a rectangular wire is disposed on the terminal block 100, and an end 103 serving as a starting end or a terminating end is substantially parallel to the tangled terminal portion 102 from the winding. The end portion 103 is wound around the outer peripheral surface of the binding end portion 102 by being pulled out. In addition, after winding, between the binding terminal portion 102 and the end portion 103 is fixed by soldering or the like.

  In the conventional connection structure shown in FIG. 17, the end portion 103 of the winding is drawn out in parallel with the linear binding terminal portion 102, and the end of the winding that is a flat wire is connected to the linear binding terminal portion 102. Since the portion 103 is wound, the twist 104 is likely to occur on the end portion 103 side of the winding. This twist 104 has a problem in that stress is generated at the end portion 103 of the winding, and there is an adverse effect such as deformation of the coil, deterioration of the insulating coating, and disconnection in the case of a thin wire.

  Therefore, a structure that can be wound around the tangled terminal portion without causing twisting at the end portion drawn from the winding using the rectangular wire is also known in the art (for example, see Patent Document 1). ).

  The structure described in Patent Document 1 has a structure in which a wiring groove is formed on the coil bobbin along the lead portion of the flat wire, and the wiring groove is twisted by 90 ° toward the binding terminal portion.

Japanese Utility Model Publication No. 4-44118

  However, the structure described in Patent Document 1 requires a wiring groove on the terminal block of the coil bobbin, so that the structure and the manufacturing process are complicated. In addition, in terms of strength, it is necessary to increase the thickness of the terminal block itself, and a large amount of material for making the terminal block is also required. For this reason, there was a problem that the cost was increased and the structure was increased in size.

  Therefore, the present invention has been made in view of the above problems, and the end portion drawn out of the winding made of the rectangular wire is not twisted at the end portion, and the gap between the adjacent portions is eliminated. It is an object of the present invention to provide a coil having a structure that can be wound at a low cost and can be wound around a terminal portion.

In order to solve the above problems, a coil according to the present invention, possess a mounting terminal portion, entwining the lead portions of the wound windings is wound to the winding part of the winding member and the terminal portion, the side surface A terminal block provided with a terminal formed in a substantially U-shape when viewed from the side, and the winding made of a flat wire arranged on the terminal block, the end drawn from the winding being the binding terminal In the coil wound around the outer peripheral surface of the part, the binding terminal part protrudes outward substantially parallel to the lower mounting surface of the terminal block so as to partially overlap the end part drawn out from the winding. And an inclined surface inclined at a predetermined angle θ with respect to the drawing direction of the end portion is formed on one side surface of the winding portion of the binding terminal portion that winds the end portion drawn from the winding. The end drawn from the wire is connected to the predetermined portion along the winding portion of the tangled terminal portion. In coil winding bending degree theta, wherein the terminal block forms a bobbin for holding said coil, said width dimension of the flat wire is W, the entire circumference dimension of the binding terminal portions when the A, W ≦ A × cos θ, 0 ° <θ <90 ° is satisfied.

  According to this structure, the winding part of the binding terminal which winds the edge part of the coil | winding which consists of a rectangular wire is inclined by the predetermined angle with respect to the drawing-out direction of this coil | winding. Then, when the end portion drawn from the winding is overlapped with the binding terminal portion and the end portion is wound along the winding portion of the binding terminal portion, the end portion drawn from the winding is It is bent by a predetermined angle with respect to the projecting direction of the binding terminal portion, and is wound around the outer peripheral surface of the binding terminal portion without making a twist. Further, it can be realized without greatly changing the conventional coil structure, and miniaturization is also possible.

In the above configuration, the angle when winding the end of the winding around the binding terminal portion is θ, the width dimension of the rectangular wire forming the winding is W, and the entire circumference dimension of the binding terminal portion is When A, the following formula W ≦ A × cos θ
It is possible to adopt a configuration that satisfies the above.

  According to this configuration, the angle θ when winding the end portion of the winding around the binding terminal portion, the width W of the rectangular wire, and the overall circumference dimension A of the binding terminal portion are expressed as W ≦ A × cos θ. When satisfied, it becomes possible to wind a flat wire on the terminal part for more than one turn without a gap between adjacent terminals.

  The said structure can employ | adopt the structure which forms the bobbin holding the said coil | winding in the said terminal block.

  According to this configuration, since the terminal block also serves as a bobbin, the structure can be simplified and the coil can be downsized.

  According to the present invention, since the end portion drawn out from the winding made of the rectangular wire is wound around the terminal portion and bent at a predetermined angle without being twisted, the reliability may be adversely affected. It is possible to eliminate the stress generated in the winding portion. Further, the conventional coil structure can be realized at a low cost without greatly changing, and further downsizing can be achieved.

It is the whole coil perspective view shown as one embodiment to which the present invention is applied. It is a top view of a coil same as the above. It is a side view of a coil same as the above. It is the A section enlarged view of FIG. FIG. 5 is an enlarged sectional view taken along line BB in FIG. 4. It is a principal part disassembled perspective view of a coil same as the above. FIG. 4 is an enlarged view of a portion A in FIG. 3, omitting a drawing end portion from a winding. It is a figure which shows the procedure of winding the extraction | drawer edge part from a coil | winding to the outer peripheral surface of the binding terminal part of a coil same as the above. It is a top view of the coil shown as other embodiments to which the present invention is applied. It is the C section enlarged view of FIG. FIG. 10 is an enlarged view of a portion C in FIG. 9, omitting a drawing end portion from the winding. It is a figure which shows the procedure of winding the extraction | drawer edge part from a coil | winding to the outer peripheral surface of the binding terminal part of the coil shown in FIG. It is a schematic plan view of the coil shown as further another embodiment to which this invention is applied. It is a schematic diagram which shows an example which winds the edge part pulled out from the coil | winding around the terminal part. It is a figure explaining the relationship between the width dimension of a coil | winding, the perimeter dimension of a binding terminal part, and the inclination angle formed in the winding part of a binding terminal part. It is a figure explaining the relationship between the length which the edge part drawn from the coil | winding makes a round of a binding terminal part, the perimeter dimension of a binding terminal part, and the inclination angle formed in the winding part of a binding terminal. It is a figure explaining the problem in a conventional coil.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention (hereinafter referred to as embodiments) will be described in detail with reference to the accompanying drawings. 1 is an overall perspective view of a coil shown as an embodiment to which the present invention is applied, FIG. 2 is a plan view of the same coil, FIG. 3 is a side view of the same coil, FIG. 4 is an enlarged view of a portion A in FIG. FIG. 6 is an enlarged sectional view taken along line BB in FIG. 4, and FIG. 6 is an exploded perspective view of the main part of the coil. Note that the same number is assigned to the same element throughout the description of the embodiment.

  1 to 6, the coil 11 of this embodiment is a winding portion vertical type coil used for, for example, an inductor, a transformer, and the like, as shown in FIGS. 1, 2, 3, and 6. The bobbin 12, the core member 13, and the winding 14 are provided.

  As shown in FIG. 6, the bobbin 12 includes a cylindrical winding member 12a around which the winding 14 is wound, and a terminal block 12b arranged to face the winding member 12a. .

  In the winding member 12a, the winding portion 15 around which the winding 14 is wound and the flange portion 16 disposed at the upper end portion in FIG. 6 of the winding portion 15 are made of an insulating resin material. It is integrally molded. A pair of guide projections 17 and 17 for regulating the position with respect to the terminal block 12b are separated from each other by 180 ° on the outer peripheral surface of the winding portion 15 and a part thereof from the lower end in FIG. It protrudes downward and is provided. On the other hand, two guide pieces 18 and 18 for regulating the position of the core member 13 with respect to the bobbin 12 are formed on the flange portion 16 so as to be separated from each other by 180 °.

  The terminal block 12b is molded as a block body having a rectangular outer edge made of an insulating resin material. In the center of the upper surface of the terminal block 12b, a hollow hole 19 into which the lower end of the winding part 15 is fitted and a pair of restricting grooves 20 into which the protruding tip portions of the two guide protrusions 17 are fitted, respectively. When the winding member 12a is combined with the terminal block 12b, the lower end portion of the winding portion 15 and the protruding tip portion of the guide projection 17 are fitted in the hollow hole 19 and the regulation grooves 20, 20, respectively. Combined to fit.

  The terminal block 12b is integrally formed with a first terminal holding portion 21a and a second terminal holding portion 21b at both ends with the hollow hole 19 in between.

  As shown in FIG. 1, FIG. 2, FIG. 3 and FIG. 6, the first terminal holding portion 21a has a plurality (three in this embodiment) of terminals 22 inserted when the terminal block 12b is molded. The two terminals 22 are arranged in parallel and held together. Each of the terminals 22 is a square terminal formed by bending a flat plate-shaped metal material each having a rectangular cross section, a mounting terminal portion 22a connected to a circuit on a circuit board (not shown), and the winding A connecting terminal portion 22b around which a portion of the lead-out end from the winding 14 wound around the winding portion 15 of the rotating member 12a is wound, and the mounting terminal portion 22a and the connecting terminal portion 22b are connected. The connecting portion 22c is provided, and is formed in a substantially U shape in a side view.

  Each terminal 22 of the first terminal holding portion 21a has the connecting portion 22c inserted into the first terminal holding portion 21a, and the mounting terminal portion 22a is substantially perpendicular to the lower end portion of the connecting portion 22c. It is bent and protrudes outward from the second terminal holding portion 21b along the mounting surface 23 (see FIGS. 3 and 6) of the terminal block 12b facing the circuit board, and the binding terminal portion 22b. Is bent substantially at a right angle from the upper end of the connecting portion 22c, and is provided so as to protrude outwardly from the second terminal holding member 21b along the upper surface 24 (see FIG. 3) of the terminal block 12b. Yes. Further, the winding terminal portion 22b has a winding portion 25 as one side surface thereof cut out at an angle θ with respect to the pulling direction of the end portion pulled out from the winding 14, and is formed at the tip portion. It is formed in a tapered shape whose width gradually narrows as it goes.

  Similarly, the second terminal holding portion 21b inserts a plurality (three in the present embodiment) of terminals 22 when the terminal block 12b is formed, and holds the plurality of terminals 22 in parallel. Yes. Each of the terminals 22 is a square terminal formed by bending a flat plate-shaped metal material each having a rectangular cross section, a mounting terminal portion 22a connected to a circuit on a circuit board (not shown), and the winding A connecting terminal portion 22b around which a portion of the lead-out end from the winding 14 wound around the winding portion 15 of the rotating member 12a is wound, and the mounting terminal portion 22a and the connecting terminal portion 22b are connected. The connecting portion 22c is provided, and is formed in a substantially U shape in a side view.

  Each terminal 22 of the second terminal holding portion 21b has the connecting portion 22c inserted into the second terminal holding portion 21b, and the mounting terminal portion 22a is substantially from the lower end of the connecting portion 22c. It is bent at a right angle and protrudes outward from the first terminal holding portion 21a along the mounting surface 23 of the terminal block 12b facing the circuit board, and the binding terminal portion 22b is connected to the connection portion 22c. It is bent at a substantially right angle from the upper end, and is provided so as to protrude outward along the upper surface 24 of the terminal block 12b away from the first terminal holding portion 21a. Further, the winding terminal portion 22b has a winding portion 25 as one side surface thereof cut out at an angle θ with respect to the pulling direction of the end portion pulled out from the winding 14, and is formed at the tip portion. It is formed in a tapered shape whose width gradually narrows as it goes.

  The winding 14 includes a first winding 14a and a second winding 14b. The first winding 14a and the second winding 14b are wound outside the winding portion 15 of the winding member 12a before the winding member 12a is attached to the terminal block 12b. It is attached to the terminal block 12b together with the member 12a. Further, after the mounting, the starting end and the terminal end of each of the windings 14a and 14b are drawn out to the first terminal holding portion 21a and the second terminal holding portion 21b as the drawn out end portions 26, respectively. The end portions 26 drawn from 14b are respectively wound and connected to the outer peripheral surface of the binding terminal portion 22b of the corresponding terminal 22, and are further fixed by soldering.

  Note that the first winding 14a and the second winding 14b in this embodiment use a rectangular wire having a flat cross section, and the winding is obtained by winding the rectangular wire in an edgewise manner. Although wound around the outer periphery of the portion 15, a winding wound with alpha (α) or a winding wound with ribbon may be used. Further, the number of windings constituting the winding 14 is not limited to two, that is, the first winding 14a and the second winding 14b, and may be changed as necessary.

  The flat wire forming the first winding 14a and the second winding 14b is parallel to the flat surface (upper and lower surfaces) of the terminal portion 22b because the flat surface of the flat wire is entangled. In this way, each of the windings 14a and 14b is drawn out as a lead-out end portion 26, and this lead-out end portion 26 overlaps on the upper plane of the corresponding binding terminal portion 22b. Further, at the position where it overlaps with the binding terminal portion 22b, the leading end portion 26 intersects with the winding portion 25 inclined of the binding terminal portion 22b, and the angle θ along the winding portion 25 It is set so that it can be bent and continuously wound around the bound terminal portion 22b. The structure for winding the end portion 26 drawn from each of the windings 14a and 14b around the binding terminal portion 22b will be described in detail later.

  The core member 13 includes a lower core member 13a and an upper core member 13b, and the lower core member 13a and the upper core member 13b are formed of, for example, a ferrite material. The lower core member 13a is formed as a block body having an outer edge in the shape of a rectangular plate, and is inserted and attached from the side surface of the terminal block 12b in contact with the lower end side of the winding member 12a. On the other hand, as shown in FIG. 6, the upper core member 13 b is disposed on the upper end side of the winding member 12 a, and is a columnar middle leg portion 28 that is inserted into the hollow portion 27 of the winding portion 15. And two rectangular plate-shaped outer leg portions 29 and 29 arranged so as to face each other with the middle leg portion 28 interposed therebetween, and one of each of the middle leg portion 28 and the two outer leg portions 29 and 29 And base portions 30 that connect each other.

  Then, as shown in FIG. 6, the upper core member 13b is combined with the lower core member 13a from above in the figure, and is attached to the terminal block 12b so as to sandwich the winding member 15. When the upper core member 13b is attached, the central portion of the base 30 is accommodated between the two guide pieces 18 of the winding member 12a, and the position of the upper core member 13b with respect to the winding member 12a is restricted.

  The above is the configuration of the entire coil 11. Next, a description will be given of a structure in which the end portions 26 respectively drawn from the windings 14 in the bobbin 12 in the coil 11 are wound and connected to the corresponding binding terminal portions 22b. In addition, the structure which winds and connects the end part 26 drawn out from the start part of the coil | winding 14 around the terminal part 22b, and the structure which winds and connects the end part 26 drawn out from the terminal part to the terminal part 22b are as follows. The same. However, since the heights of the start and end portions of the edge-wound winding are different from each other, one or both of them are bent to match the height of the terminal portion. Therefore, in the following description, it demonstrates using FIG.7 and FIG.8 as the extraction | drawer end part 26 from the coil | winding 14, without distinguishing the winding start end and winding end of the coil | winding 14. FIG.

  FIG. 7 shows a portion of the binding terminal part 22b before the winding end part 26 from the winding 14 is wound around the terminal part 22b. In FIG. 7, the winding part 25 is shown by the thick line. In addition, as described above, the binding terminal portion 22b is cut out at an angle θ diagonally so that one side surface 25 of one side intersects the lead-out end portion 26 of the winding 14, and is formed at the tip portion. It is formed in a tapered shape whose width gradually narrows as it goes. And the end part 26 pulled out from the coil | winding 14 wound by the winding member 12a is substantially the same as this binding terminal part 22b toward the outer side from the inside of the bobbin 12, as shown to (a) of FIG. Pulled out in parallel and intersected with the winding part 25, and then bent at an angle θ obliquely along the winding part 25 as shown in FIGS. (B), (c) and (d). It is continuously wound around the outer peripheral surface of the terminal portion 22b. As described above, when the end portion 26 drawn out from the winding 14 is bent obliquely at an angle θ along the winding portion 25 and wound around the outer peripheral surface of the terminal portion 22b, the end portion 26 is not twisted. Can be wrapped around. The number of turns to be wound is about 1 to 2 turns, and the end 26 remaining after the winding is processed by cutting or folding. The winding state shown in FIGS. 1-5 has shown the state wound in this way.

  9 and 10 show another embodiment to which the present invention is applied. FIG. 9 is a plan view of the coil, and FIG. 10 is an enlarged view of a portion C in FIG. 1 to 8, the winding terminal portion 22b is a winding portion 25 as one side surface of both side surfaces of the binding terminal portion 22b. The taper was cut away at an angle θ with respect to the pull-out direction, and the width gradually decreased toward the tip. On the other hand, in the configuration of the coil 11 in the embodiment shown in FIGS. 9 and 10, the binding terminal portion 22 b is extended in the pulling direction of the end portion 26 that is drawn outward from the winding 14 in the bobbin 12. On the other hand, the angle θ is bent in a horizontal plane (a plane parallel to the mounting surface 23), and the end portion 26 drawn outward from the winding 14 is inclined to the winding portion 25 of the terminal portion 22 b and the angle θ. In this crossed state, the end portion 26 is entangled and wound along the winding portion 25 of the terminal portion 22b. Therefore, in this example, the winding part 25 is formed over the entire length of the binding terminal part.

  A structure in which the end portion 26 drawn from the winding 14 is wound around the terminal portion 22b will be further described with reference to FIGS.

  FIG. 11 shows the binding terminal portion 22b before the end portion 26 drawn from the winding 14 is wound. In FIG. 11, the winding part 25 is shown by a thick line for easy understanding. Further, the binding terminal portion 22b is inclined at an angle θ with respect to the drawing direction of the end portion 26 drawn out from the winding 14 in the bobbin 12 toward the outside. That is, the winding portion 25 of the binding terminal portion 22b is also inclined at an angle θ with respect to the drawing direction of the end portion 26.

  Then, the end portion 26 drawn out from the winding 14 wound around the winding member 12a is moved outward from the winding 14 in the bobbin 12 in the coil 11, as shown in FIG. The winding portion of the binding terminal portion 22b is pulled out so as to overlap with the binding terminal portion 22b and intersects with the winding portion 25, and then the winding portion of the binding terminal portion 22b as shown in FIGS. 25 is bent at an angle θ obliquely and continuously wound. As described above, when the end portion 26 drawn out from the winding 14 is bent obliquely at an angle θ along the winding portion 25 and wound around the outer peripheral surface of the terminal portion 22b, the end portion 26 is not twisted. Can be wrapped around. The number of turns to be wound is about 1 to 2 turns, and the end portion 26 remaining after the winding is processed by cutting or folding. The winding state shown in FIG.9 and FIG.10 has shown the state wound in this way.

  FIG. 13 is a schematic plan view of a coil shown as still another embodiment to which the present invention is applied. 1 to 12, the winding portion 25 of the binding terminal portion 22b is inclined at an angle θ with respect to the drawing direction of the end portion 26 drawn from the winding 14. The structure of the coil 11 in the embodiment shown in FIG. 13 is such that the end portion 26 is drawn out from the direction inclined at an angle θ with respect to the winding portion of the terminal portion 22b, and the end portion 26 is drawn out from the winding terminal portion. 22 and then the end 26 is wound along the winding portion 25 of the binding terminal portion 22b.

  Thus, in the case where the end portion 26 of the winding 14 is pulled out from the direction inclined by the angle θ with respect to the winding portion 25 of the tangled terminal portion 22b and is wound around the tangled terminal portion 22b, This can be implemented without greatly changing the coil structure.

  In each embodiment shown in FIGS. 9 to 13, the terminal 22 is described as a case where a square terminal having a rectangular cross section is used. However, the terminal is not limited to a square terminal, and the round terminal having a round cross section. May be used.

  Moreover, in each said embodiment, angle | corner (theta) which intersects with the drawing | drawing-out direction of the edge part 26 drawn out from the coil | winding 14 formed by the winding part 25 and the rectangular wire of the binding terminal part 22b is 90 degrees. In this case, when a rectangular wire is wound around the binding terminal portion 22b, it cannot be wound for more than one turn, but the angle θ between the winding portion 25 of the binding terminal portion 22b and the drawing direction of the end portion of the rectangular wire is When an acute angle (0 ° <θ <90 °) is established, it is possible to wind the end of the flat wire around the peripheral surface of the terminal portion 22b for one turn or more. Further, when the width dimension of the winding 14 is W and the whole circumference dimension of the binding terminal portion is A, if a relational expression of (W ≦ A × cos θ) is satisfied, the rectangular wire is connected to the terminal portion 22b. It is possible to wind more than one turn around the circumference of

  By satisfying the above relational expression (W ≦ A × cos θ), it is possible to wind the rectangular wire winding 14 around the tangled terminal portion 22b of the rectangular terminal by one turn or more with reference to FIGS. Explained.

14 to 16, when the width dimension of the winding 14 is W (constant) and the whole circumference dimension of the binding terminal portion is A (constant), the length of the feed pitch Y determined by the incident angle θ of the winding 14 Is
W = Y × sinθ (1)
Y = W / sinθ (2)
It is obtained from the relational expression. Therefore, if the length is equal to or longer than the feed pitch Y, the winding 14 can be wound around the binding terminal portion 22b for one turn or more.

Furthermore, the length L that the winding 14 of the rectangular wire wraps around the terminal portion 22b is as follows:
A = L × sinθ (3)
L = A / sinθ (4)
The deviation X of the winding 14 of the flat wire is
X = L × cos θ (5)
Here, substituting equation (4) L = A / sinθ, X = A × cosθ / sinθ (6)
Y ≦ X (7)
W / sinθ ≦ A × cosθ / sinθ (8)
Therefore,
W ≦ A × cosθ (9)
If the above relationship is satisfied, it becomes possible to wind the end portion of the flat wire and wind it around the terminal portion by 1T or more, and the stability of the tangled connection is improved. Also, when θ is 0 ° or 90 °, when the end of the flat wire is entangled and connected to the terminal, twisting occurs and there is a problem in reliability. Due to the lack of problems, the range is 0 ° <θ <90 °.

  Therefore, when practicing the present invention, the incident angle θ of the winding 14 can be determined by determining the width W of the winding 14 and the overall circumference A of the binding terminal portion 22b. If the dimension W and the incident angle θ of the winding 14 are determined, the entire circumference A of the terminal portion can be determined, and if the entire circumference A of the binding terminal portion 22b and the incident angle θ of the winding 14 are determined, the width of the winding 14 is determined. The dimension W can be determined.

In addition, although the present Example demonstrated the case where a terminal was insert-molded, the structure which embeds a terminal after shaping | molding a bobbin (inserting) may be sufficient as insert molding. Moreover, in the Example shown in FIG. 9, FIG. 13, although the mounting terminal part 22a and the binding terminal part 22b were shown as a cross-sectional rectangle, a cross section may be round shape.
Moreover, although the E-shaped core and the I-shaped core are shown as the core structure, the E-shaped cores may be brought together or differently shaped cores may be used.

  As mentioned above, although this invention was demonstrated using embodiment, it cannot be overemphasized that the technical scope of this invention is not limited to the range as described in the said embodiment. It will be apparent to those skilled in the art that various modifications or improvements can be added to the above-described embodiments. Further, it is apparent from the scope of the claims that the embodiments added with such changes or improvements can be included in the technical scope of the present invention.

DESCRIPTION OF SYMBOLS 11 Coil 12 Bobbin 12a Winding member 12b Terminal block 13 Core member 13a Upper core member 13b Lower core member 14 Winding 15 Winding part 16 Grow part 17 Guide protrusion 18 Guide piece 19 Hollow hole 20 Restriction groove 21a 1st terminal holding | maintenance Member 21b Second terminal holding member 22 Terminal 22a Mounting terminal portion 22b Binding terminal portion 22c Connection portion 23 Mounting surface 24 Upper surface 25 Winding portion 26 of winding terminal portion Winding end portion 27 Hollow portion 28 Inner leg portion 29 Outer leg 30 Base

Claims (1)

A mounting terminal portion, it possesses a winding portion entwining the lead portion of the wound windings is wrapped terminal portions of the winding member, provided with terminals formed on the side view substantially sideways U-shaped terminal Stand,
In the coil comprising the winding consisting of a rectangular wire arranged on the terminal block, and winding the end portion drawn from the winding around the outer peripheral surface of the binding terminal portion,
The binding terminal portion protrudes outward substantially parallel to the lower mounting surface of the terminal block so that a part of the binding terminal portion overlaps with the end portion extracted from the winding, and the end extracted from the winding An inclined surface inclined at a predetermined angle θ with respect to the drawing direction of the end portion is formed on one side surface of the winding portion of the binding terminal portion that winds the portion,
In the coil to be wound by bending the predetermined angle θ along the winding portion of the binding terminal portion the end portion drawn from the winding,
The terminal block forms a bobbin that holds the winding;
When the width dimension of the rectangular wire is W and the whole circumference dimension of the binding terminal portion is A,
W ≦ A × cos θ, 0 ° <θ <90 °
Coil characterized by satisfying

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