JPH08222440A - Winding parts - Google Patents

Abstract

(57) [Abstract] [Purpose] It is an object to provide a winding component whose size in the thickness direction or the width direction can be reduced. [Structure] A bobbin 11 including a winding portion 11a around which a conducting wire W is wound, and terminal mounting portions 11b and 11c that are continuously provided on both sides of the winding portion, and a bobbin 11 disposed inside the winding portion 11a. The first core 13 and the frame-shaped second core 14 arranged so as to surround the outer periphery of the winding portion 11a, and the winding portion 11a and both terminal mounting portions 11b and 11c are the second core 14 The two terminal mounting portions 11b are connected to each other by a connecting portion 11d provided between them so that one side of the terminals can be fitted.
A groove 15 is formed on at least one of 11c and is continuous with the inside of the winding portion 11a through the connecting portion 11d. The second core 14 has an end portion of the first core 13 and the connecting portion 11a.
A notch 14a into which d is inserted is formed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to winding parts such as transformers and inductors used in electronic equipment and electric equipment.

[0002]

2. Description of the Related Art Conventionally, as a winding component used in electronic equipment and electric equipment, one having a structure shown in FIGS. 16 to 18 is known.

In these drawings, reference numeral 1 denotes a winding component, and this winding component 1 is connected to a winding portion 1a around which a conductor W is wound in a coil shape and to both end portions of this winding portion 1a. Was set up,
A bobbin B having terminal mounting portions 1b and 1c to which terminals 2 to which each end of the conductive wire W is connected is mounted, and a core 3 surrounding the inner and outer circumferences of the winding portion 1a. ing.

The core 3 is composed of a pair of E-shaped core halves (hereinafter referred to as E cores) 3a and 3b, and each of the core halves 3a and 3b has a tongue shape. The center leg 4 and a pair of outer legs 5 provided in parallel on both sides of the center leg 4 at a predetermined interval.

Then, each of these core halves 3a and 3b
Is attached to the winding portion 1a from both ends thereof,
Each middle leg 4 is inserted inside the winding portion 1a of the bobbin B, and each outer leg 5 is positioned along the outer side of the winding portion 1a.
Also, the outer legs 5 are abutted against each other, so that the core 3 is configured so as to surround the inner and outer circumferences of the wound conductive wire W.

In mounting such a conventional winding component 1, for example, the form shown in FIGS. 19 and 20 is adopted.

In the embodiment shown in FIG. 19, the winding component 1 is mounted on the substrate 6
Each terminal 2 is formed in a crank shape, and its tip end portion is located outside the terminal mounting portion, and the ends of the conductors W are attached to the base end portions of these terminals 2. The terminals are wound and fixed, and the tip portions of these terminals 2 are fixed to predetermined positions on the substrate by soldering or the like.

Further, the form shown in FIG. 20 is a form in which a part of the winding component 1 is mounted in a state of being inserted into a through hole 6a formed in the substrate 6, and each terminal 2 is attached to each terminal mounting portion. 1b
-The end of 1c is made to project along the axial direction of the winding portion 1a, and the lead wire W is attached to the base end portions of these terminals 2.
The end portion of is fixed by winding, and the tip portion thereof is fixed to the connecting portion formed on the inner peripheral edge portion of the through hole 6a by soldering or the like.

[0009]

In the conventional winding component 1 as described above, the following problems to be improved remain.

That is, with the recent miniaturization of electronic equipment and electric equipment, it has been demanded to reduce the dimension in the width direction or the thickness direction of the winding component 1 mounted thereon as described above. In the conventional winding component 1, for example, when an attempt is made to reduce the dimension in the thickness direction, from the viewpoint of maintaining the performance of the winding component 1, the conductive wire W in the winding portion 1a.
Since the winding amount and the cross-sectional area of the core 3 cannot be reduced, as is clear from FIG. 18, only the measures for reducing the thickness of the terminal mounting portions 1b and 1c of the bobbin B are left.

However, if the terminal mounting portions 1b and 1c are made thinner, the supporting strength of the terminals 2 mounted on these terminal mounting portions 1b and 1c will be reduced. Limited range.

Moreover, in the prior art, each of these terminals 2 is used as a connecting member for connecting the winding component 1 to the substrate 6, so that the above-mentioned terminal mounting portion 1b is used.
The reduction in the supporting strength of each terminal 2 in 1c directly leads to the reduction in the mounting strength of the winding component 1.

In addition, when the size in the width direction is to be reduced, the outer leg 5 of the core 3 positioned so as to surround the outer circumference of the winding portion 1a must be moved to the inside of the winding component 1. However, as described above, since the winding amount of the conductive wire W is determined, the interval between the inner peripheral surfaces of the outer legs 5 surrounding the conductive wire W cannot be narrowed, and the performance of the winding component 1 is ensured. Therefore, since the cross-sectional area of the outer leg 5 forming the magnetic circuit cannot be changed significantly, the outer leg 5 is changed to a vertically long shape as shown by a chain line in FIG. Can only be moved inward.

However, in the conventional winding component 1, when the outer leg 5 is made vertically long, the downward extension portion overlaps with the terminal mounting portions 1b and 1c located therebelow. When the core halves 3a and 3b are mounted on the bobbin B, the outer legs 5 and the terminal mounting portions 1b and 1c collide with each other, which makes it impossible to mount the core halves 3a and 3b. The dimension in the direction cannot be reduced.

Further, in the conventional winding component 1, as described above, by fixing the terminal 2 to which the end of the wound winding wire W is fixed in the winding to the substrate 6, Since the mounting of No. 1 is performed, even if an external force acts on the substrate 6 or the winding component 1 due to some cause such as vibration, no problem occurs in the fixing portion between the terminal 2 and the substrate 6, It is assumed that the external force acts on the winding portion between the terminal 2 and the conductive wire W, and a defect such as looseness or detachment of the conductive wire W occurs at this winding portion.

The present invention has been made in view of the above conventional problems, and a first object thereof is to provide a winding component capable of reducing the dimension in the thickness direction or the width direction. Especially.

A second object of the present invention is to provide a winding component in which the occurrence of loosening or disconnection of the conductor wire fixed to the terminal is suppressed.

A third object of the present invention is to provide a winding component in which the inductance coefficient can be adjusted with high precision.

[0019]

In order to achieve the above-mentioned first object, the winding component according to the first aspect of the present invention comprises:
A bobbin including a winding portion in which a conductive wire is wound in a coil shape, and a terminal mounting portion that is continuously provided on both sides of the winding portion and in which a plurality of terminals to which the end portions of the conductive wire are connected are mounted. A bobbin winding portion and both ends of the bobbin, the first core being disposed inside the winding portion, and the frame-shaped second core being disposed so as to surround the outer periphery of the winding portion. The child mounting portion is the second
The one side of the core is formed with a space so that it can be fitted, and is connected to each other by a connecting portion provided between the two, and at least one of the both terminal mounting portions,
A continuous groove is formed inside the winding portion via the connecting portion, and a cutout into which the end portion of the first core and the connecting portion are fitted is formed in the second core. Is characterized by.

According to a second aspect of the present invention, in order to achieve the first object described above, the terminal of the terminal mounting portion provided with the groove in the first aspect avoids the groove. It is characterized in that it is installed in the position.

According to a third aspect of the present invention, in order to achieve the above-mentioned second object, one end of each terminal in the first or second aspect is such that The winding part is made to project in the length direction of the winding part, and the other end part is made to project further outward than the outermost surface of the winding part. It is characterized in that it is adapted to be selectively connected to.

Further, in order to achieve the above-mentioned third object, the winding component according to a fourth aspect of the present invention is provided with the first aspect.
The first core according to claim 3 is opposed to the bottom surface of the cutout of the second core at a predetermined interval via a spacer, and the space between the first core and both side surfaces of the cutout is It is characterized in that it is formed to be larger than the distance from the bottom surface.

[0023]

According to the winding component of claim 1 of the present invention,
By inserting the first core from the groove formed in the terminal mounting portion toward the winding portion, the first core is mounted at a predetermined position inside the winding portion, and thereafter, the frame-shaped first core is inserted. The two cores are attached to the bobbin in a direction orthogonal to the insertion direction of the first core so as to surround the outer peripheral portion of the winding portion.

When mounting such a core, a second gap is formed in the gap formed between the winding portion of the bobbin and the terminal mounting portion.
A side of the core is fitted, and further, a notch formed in the second core is fitted with an end portion of the first core and a connecting portion that connects the terminal mounting portion and the winding portion. Thus, the second core is mounted at the predetermined position on the bobbin.

By positioning the side of the second core in the gap formed between the terminal mounting portion and the winding portion, in the thickness direction and width direction of the bobbin,
The interference between the terminal mounting portion and the second core is eliminated.

Also, since the interference between the terminal mounting portion and the core is eliminated, the degree of freedom in setting the shape of the terminal mounting portion is increased.

According to the winding component of claim 2 of the present invention, in the terminal mounting portion in which the groove is formed, the terminal is provided at a position avoiding the groove, so that the terminal mounting position has a sufficient thickness. Therefore, the reduction in the supporting strength of the terminal is suppressed.

According to the winding component of claim 3 of the present invention, both ends of the terminal are projected from the terminal mounting portion, and the ends of the conductor wire are selectively connected to these ends. .

As a result, the end of the terminal to which the conductor wire is not connected is used for connection with the substrate, the connection portion with the conductor wire is separated from the connection portion with the substrate, and external force is applied to the connection portion between the conductor wire and the terminal. Is suppressed.

Further, since one end of the terminal is projected from the terminal mounting portion in the axial direction of the winding component, when the winding component is inserted into the through hole of the board and mounted, the axial line The end portion of the terminal projected in the direction is engaged with the inner peripheral edge portion of the through hole, and the winding component is fixed to the substrate by fixing the end portion and the substrate.

Further, since one end of the terminal is located outside the outermost surface of the winding component, when the winding component is mounted on the surface of the board, it is projected from the outermost surface. By mounting the ends of the formed terminals in contact with the substrate, the winding components are mounted through the terminals.

Further, according to the winding component of claim 4 of the present invention, when both cores are mounted on the bobbin,
The end of the first core is opposed to the bottom surface of the cutout of the second core via a spacer.

Since the distance between the first core and both side surfaces of the cutout is larger than the distance between the bottom surface and the first core, the distance between the first core and the both side surfaces of the cutout is increased. The leakage magnetic flux generated in the field is suppressed to a small level.

Therefore, the setting of the inductance coefficient of the winding component depends on the distance between the end of the first core and the bottom surface of the cutout of the second core, and as a result, the adjustment of the thickness by adjusting the thickness of the spacer is performed. By adjusting the gap between the first core and the second core, the inductance coefficient of the winding component is adjusted with high accuracy.

[0035]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. In the following description, the same parts as those of the above-described conventional winding component 1 are designated by the same reference numerals to simplify the description.

In FIG. 1, reference numeral 10 indicates a winding component according to the present embodiment. The winding component 10 includes a winding portion 11a around which a conductor W is wound in a coil shape, and the winding portion 11a. Bobbin 11 including a plurality of terminals 12 connected to the ends of the conductive wire W, and bobbin 11 having terminal mounting portions 11b and 11c, and disposed inside winding portion 11a. A first core 13 and a frame-shaped second core 14 arranged so as to surround the outer circumference of the winding portion 11a, and the winding portion 11a of the bobbin 11 and both terminal mounting portions 11b.
c is formed with a gap G so that one side of the second core 14 can be fitted therein, and is connected to each other by a connecting portion 11d provided between the two, and both terminal mounting portions 11b. At least one of 11c is formed with a groove 15 continuous to the inside of the winding portion 11a via the connecting portion 11d, and the second core 14 has an end portion of the first core 13 and the connecting portion. It has a schematic configuration in which a notch 14a into which 11d is fitted is formed.

Next, the details of these will be described. The bobbin 11 is, as shown in FIGS. 6 and 7,
The terminal mounting portions 11b and 11c are formed in a substantially rectangular shape by injection molding using a synthetic resin material having electrical insulation properties, and are provided at both ends in the length direction thereof along the direction substantially orthogonal to the length direction. Is integrally formed, and the winding portion 11a is formed in a region excluding the gap G from each of the terminal mounting portions 11b and 11c at an intermediate portion in the length direction.

Further, the upper surface (upper end surface in FIG. 7) of each connecting portion 11d connecting the both terminal mounting portions 11b and 11c and the winding portion 11a has an inner hole of the winding portion 11a, The thickness is formed so as to be positioned approximately in the middle of the facing surfaces in the height direction. In the figure, the winding part 1
1a shows a state in which the conductive wire W is wound.

The first core 13 and the second core 14 are ferrite cores, and the first core 13 is formed in a plate shape as shown in FIG. 1, and the width thereof is the winding portion 11a.
The width of the inner hole and the groove 15 is set to be substantially the same as or slightly smaller than that of the inner hole and the groove 15, and the height of the inner hole and the groove 15 is set to be small.
The height is set to be substantially the same as or slightly smaller than the height of the inner hole of "a", and the length thereof is made substantially equal to the distance between the facing surfaces of the both terminal mounting portions 11b and 11c.

Further, the second core 14 has, on its inner side,
A through hole 14b that is slightly larger than the outer contour of the winding portion 11a so that the winding portion 11a of the bobbin 11 is accommodated.
As shown in FIGS. 1 and 8, the peripheral wall has a vertically long shape in the thickness direction of the winding component 10, and is fitted into the gap G of the bobbin 11. The notch 1 is provided on each of the pair of sides.
4a is formed in a quadrangular shape and opened downward in FIGS. 1 and 8.

As shown in FIGS. 1 and 6, the groove 15 formed in the bobbin 11 has the terminal mounting portion 11 on one side.
From the inner end surface of b through the connecting portion 11d, the winding portion 11
While being connected to one end of the inner hole of a, the other end of the inner hole reaches the other terminal mounting part 11c through the other connecting part 11d, and further the other terminal mounting part 11c.
Through, and is opened at the outer end surface.

As a result, the first core 13 can be inserted into the groove 15 and the winding portion 11a from the side of the other terminal mounting portion 11c, and the tip in the insertion direction thereof is mounted on the one terminal. By being abutted against the portion 11b, it is positioned at a predetermined position.

Further, when the first core 13 is positioned at the above-mentioned predetermined position, both ends of the first core 13 are positioned at the connecting part 11d, so that the first core 13 is externally connected to both ends of the winding part 11a. While being projected to
The upper surface is exposed to the outside.

Then, as described above, the connecting portion 11
Since the upper surface of d is located on the inner surface of the winding portion 11a and substantially in the middle between the facing surfaces in the height direction, the depth of the groove 15 formed in these is equal to that of the first core 13. It is shallower than the thickness, and as a result, the upper surface of the first core 13 positioned at these connecting portions 11 d is slightly protruded upward from the connecting portions 11 d at both exposed portions.

Therefore, when the second core 14 is mounted so as to surround the winding portion 11a, the bottom surface of the notch 14a of the second core 14 is, as shown in FIG. It is adapted to be brought into contact with the exposed surface of the core 13.

Further, in this embodiment, as shown in FIG. 8, the cutout 1 of the first core 13 and the second core 14 is formed.
A spacer 16 made of an electrically insulating material is interposed at the contact portion with the bottom surface of 4a to regulate the gap a between the two and the gap a between the first core 13 and the notch 14a. On the other hand, the gap b between the first core 13 and both side walls of the cutout 14a is set to be large.

This is because the leakage magnetic flux between the first core 13 and the notch 14a is reduced as much as possible, and the magnetic flux passage is concentrated at the portion where the first core 13 and the bottom surface of the notch 14a face each other. Is a measure for making the setting of the inductance coefficient of the winding component 10 dependent on the gap between the first core 13 and the bottom surface of the notch 14a.
When the relationship of b is b> 10a, the above-mentioned function is satisfactorily obtained.

Further, in the terminal mounting portion 11b in which the groove 15 is not formed, six terminals 12 are predetermined in the width direction of the terminal mounting portion 11b as shown in FIGS. 2 and 6 in this embodiment. The bobbin 11 is spaced apart from the outer end surface of the bobbin 11.
In the terminal mounting portion 11c which is provided so as to project along the length direction of the bobbin 11 and in which the groove 15 is formed, one terminal 12 is provided on each side of the groove 15 and the length of the bobbin 11 is long. It is provided so as to project along the direction.

Then, the ends of the lead wires W drawn from the winding portion 11a are wound around the base ends of the terminals 12 and fixed by soldering or the like as required.

In the winding component 10 of this embodiment having the above-described structure, a predetermined amount of the conductive wire W is wound around the winding portion 11a of the bobbin 11 and the ends thereof are attached to the terminal mounting portions 11b and 11c. Connected to the terminal 12, and then connect the first core 13 from the side of the other terminal mounting portion 11c to the groove 1
5 is inserted into the winding part 11a, and from this,
After mounting the second core 14 on the bobbin 11 such that the winding portion 11a is fitted into the through hole 14b inside the second core 14, the second core 14 and the first core 13 previously mounted are attached. Are fixed at these abutting portions by means such as adhesion, so that they are assembled as shown in FIGS.

In the winding component 10 of this embodiment assembled in this manner, the other terminal mounting portion 1
Since the groove 15 continuous with the winding portion 11a is formed in the winding portion 1c, the first core 13 mounted in the winding portion 11a can be easily inserted, and the tip portion of the first core 13 can be formed in one side. By being brought into contact with the terminal mounting portion 11b, the terminal mounting portion 11b is mounted at a predetermined position.

A gap G is formed between the winding portion 11a of the bobbin 11 and both terminal mounting portions 11b and 11c, and a notch 14a is formed on each of the pair of parallel sides of the second core 14. Since it is formed, the second core 1
The pair of edges 4 are fitted between the terminal mounting portions 11b and 11c and the winding portion 11a, and the coupling portion 11d that couples the terminal mounting portions 11b and 11c and the winding portion 11a, respectively, and the connecting portion 11d. Both ends of the first core 13 positioned in the inner groove 15 are fitted into the notches 14b formed in the pair of sides of the first core 14.

Therefore, the second core 14 is mounted in the predetermined position of the bobbin 11 without interfering with both terminal mounting portions 11b and 11c.

Since the pair of sides of the second core 14 in which the notches 14a are formed straddle the connecting portion 11d of the bobbin 11, the mounting direction of the second core 14 (that is, the bobbin 11). In the thickness direction of the
There is no interference between the bobbin 11 and the other two sides of the core 14 (sides located on the sides of the winding part 11a), and the two sides of the second core 14 located on the sides of the winding part 14a are eliminated. ,
The bobbin 11 has no dimension restriction in the thickness direction, and the cross-sectional shape of the pair of sides can be freely changed.

Accordingly, the winding portion 1 of the second core 14
With the inner side surface of the side positioned on the side portion of 1a held in a fixed position and the cross-sectional area thereof kept constant, it is possible to change the shape such that the outer side surface approaches the winding portion 11a side. As a result, the width of the second core 14 can be reduced,
As a result, the width of the winding component 10 is reduced.

Further, the second core 14 and each terminal mounting portion 11b in the thickness direction of the bobbin 11 may be arranged before or after assembly.
The state in which the winding component 10 and the terminal component 11c are overlapped with each other is avoided.
The thickness of the winding component 10 can be reduced without being affected by the thickness of c.

Furthermore, each of these terminal mounting portions 11b.1
Since the interference between 1c and the second core 14 is eliminated, the installation space for the terminal 12 is secured in the widthwise direction, and the dimension of the terminal mounting portions 11b and 11c in the thickness direction can be freely set. Thus, it is possible to set the shape of the terminal mounting portions 11b and 11c with which the supporting strength of the terminal 12 is sufficiently obtained.

On the other hand, in the terminal mounting portion 11c in which the groove 15 is formed, the thickness of the portion in which the groove 15 is formed is thin, and therefore, the purpose is to thin the winding component 10. Since it is difficult to attach the terminal 12 to the portion where the groove 15 is formed, the terminal 12 is attached only to the thick portions on both sides avoiding the groove 15.

Also in this case, since a sufficient terminal installation space is secured in the one terminal mounting portion 11b and a large number of terminals 12 can be mounted, the terminal installation space in the other terminal mounting portion 11c is reduced. There is almost no problem caused by.

Further, in the present embodiment, the first core 13
Between the notch 14a of the second core 14 and the bottom surface of the second core 14
Is regulated by the spacer 16, but the inductance coefficient of the winding component 10 is adjusted by changing the thickness of the spacer 16 to change the magnetic resistance.

Here, the first core 13 and the notch 14
Since the gap b between both side portions of the notch 14a and the first core 13 is set to be larger than the gap a with the bottom surface of a, the magnetic flux leaking from both gaps b causes the inductance of the spacer 16 to increase. The influence on the coefficient adjusting function is suppressed.

Therefore, the inductance can be adjusted with high accuracy by a simple operation, and the first core 13 can be adjusted.
Even if a relative positional deviation occurs between the second core 14 and the second core 14, a change in inductance due to the positional deviation is suppressed.

On the other hand, as shown in FIG. 9, it may be necessary to mount a large number of terminals 12 on the terminal mounting portion 11c in which the groove 15 is formed. In such a case, the terminal mounting portion 11c is required. This can be dealt with by securing the installation space for the terminal 12 by increasing the thickness of the portion corresponding to the groove 15.

In this case, the dimension in the thickness direction is inevitably enlarged, but the dimension in the width direction is suppressed to be small as described above, and it is applied when the mounting space has a margin in the thickness direction. To be done.

Further, as shown in FIG. 10, it is possible to form the groove 15 in both the terminal mounting portions 11b and 11c. Such a configuration has a small number of terminals 12 and
This is a configuration that can be implemented when it is necessary to reduce the dimensions in the width direction and the thickness direction. However, since the groove 15 is open at both ends of the bobbin 11, when the first core 13 is mounted, By having two insertion points, there is an advantage that the positioning operation of the bobbin 11 in the assembling apparatus or the like is simplified, the assembly line is simplified, and the assembly process is shortened.

Further, as shown in FIG. 11, when it is necessary to provide a large number of terminals 12 in each of the terminal mounting portions 11b and 11c, and there is a margin in the thickness direction,
Grooves 15 are formed in both terminal mounting portions 11b and 11c,
By increasing the thickness of the portion corresponding to the groove 15 to secure the installation space for the terminal 12, it is possible to take advantage of the aforementioned assembling.

On the other hand, FIGS. 12 to 15 show another embodiment of the present invention, in which each of the terminal mounting portions 11b and 11 is
The terminal 17 attached to c is modified, and other configurations are similar to those of the above-described embodiment.

More specifically, as shown in FIG. 12, each terminal 17 of this embodiment has one end 17a from the end surface of the terminal mounting portions 11b and 11c in the lengthwise direction of the bobbin 11. While being projected in the length direction, the other end portion 17b is projected outward from one end face in the thickness direction of the bobbin 11, and the tip portion thereof is the maximum of the winding component 10. It is located outside the outer surface.

Then, each end portion 17a of these terminals 17 is
The end of the conducting wire W wound around the winding portion 11a is selectively connected to either one of 17b.

Further, the terminal 17 is bent and formed so that the surfaces including the end portions 17a and 17b are separated from each other by a predetermined distance in the middle portion thereof, and the bent portion 17c is formed at the time of molding the bobbin 11. It is adapted to be used as a locking portion when setting the terminal inside the molding die.

With such a configuration, for example, when the winding component 10 is mounted along the surface of the substrate 6, as shown in FIG.
The other end 17b provided so as to project from the outermost surface of 0 is used for joining to the substrate 6, and the end of the conductive wire W is connected to the other end 17a.

Further, the through hole 18 formed in the substrate 6
In the case of mounting in a state of being inserted inside, as shown in FIG. 14, one terminal 17a of the terminal 17 protruding in the length direction is engaged with the peripheral portion of the through hole 18 of the substrate 6. By being fixed, it is used for joining the winding component 10, and the conducting wire W is connected to the other terminal 17b.

When mounting is performed in such a state that the winding component 10 is inserted into the through hole 18 of the substrate 6, the insertion direction of the winding component 10 into the through hole 18 is as shown in FIG. 14 as shown in FIG. It may be in the opposite direction.

With the structure of the terminal 17 shown in this embodiment, the terminal 17 is used as a connecting member for mounting on the substrate 6, and a position where a force is not directly transmitted from a portion used for the connection. By connecting the conductive wires W at, the occurrence of problems such as loosening, peeling, or detachment of the conductive wires W at these connecting portions is suppressed.

The shapes, sizes, etc. of the constituent members shown in the above embodiments are merely examples, and can be variously changed based on the type of electronic equipment or electric equipment to be applied, design requirements, or the like.

For example, in the above embodiment, the terminal 1
Although the example in which 7 is formed by one continuous member is shown, one terminal 17 is formed by two constituent members, and insert-molded in the terminal mounting portions 11b and 11c in a state in which they are electrically connected. You may make it equip with it etc.

[0077]

As described above, according to the first aspect of the present invention.
According to the winding component described in (1), when the core is mounted on the bobbin, the side of the second core is fitted into the gap formed between the winding part of the bobbin and the terminal mounting part. The end portion of the first core and the connecting portion that connects the terminal mounting portion and the winding portion are fitted into the notches formed on the sides of the second core, so that the winding of the second core is wound. Interference between the bobbin and the side provided along the outer side of the portion is eliminated.

Therefore, the side of the second core, which is arranged along the outer side of the winding portion, can be extended in the thickness direction of the bobbin and contracted in the width direction. The widthwise dimension of can be reduced.

Further, the side of the second core that intersects with the bobbin and the terminal mounting portion are not overlapped in the thickness direction of the bobbin, and the thickness of the terminal mounting portion affects the thickness of the bobbin. This can be prevented, and the thickness of the winding component can be reduced.

Furthermore, since the interference between the terminal mounting portion and the second core is eliminated, the degree of freedom in setting the dimension of the terminal mounting portion in the thickness direction is increased, and as a result, the support of the terminal mounted on the terminal mounting portion is achieved. It is possible to secure a sufficient thickness, and it is possible to enhance the strength of the winding component.

According to the winding component of claim 2 of the present invention, in the terminal mounting portion in which the groove is formed, the terminal is provided at a position avoiding the groove, thereby preventing a reduction in the supporting strength of the terminal. be able to.

Further, according to the winding component of the third aspect of the present invention, both ends of the terminal are projected from different positions of the terminal mounting portion, and the ends of the winding are selectively selected at these ends. By connecting to the terminal, by separating the portion of the terminal used to connect to the board and the portion used to connect to the conductor wire, it is possible to prevent external force from acting on the connection portion between the conductor wire and the terminal. The durability of the winding component can be improved.

Further, by projecting one end of the terminal from the terminal mounting portion in the axial direction of the winding component, when the winding component is inserted into the through hole of the substrate and mounted, By engaging the end of the terminal projected in the direction with the inner peripheral edge of the through hole, and by positioning the other end of the terminal outward from the outermost surface of the winding component,
When mounting the winding component on the surface of the board, the end portions of the terminals projected from the outermost surface are brought into contact with the board to realize various types of mounting forms, and Can provide protection.

Further, according to the winding component of claim 4 of the present invention, both side surfaces of the first core and the cutout are arranged with respect to the distance between the bottom surface of the cutout of the second core and the first core. By setting a large interval between and, it is possible to suppress the leakage magnetic flux generated between the first core and both side surfaces of the notch to be small.

Therefore, the magnetic path between the first core and the second core is concentrated on the portion of the first core and the second core facing the bottom surface of the cutout, and the leakage flux between both side surfaces of the cutout is concentrated. However, it is possible to suppress the influence on the reactance of the winding component.

As a result, by adjusting the gap between the first core and the second core by adjusting the thickness of the spacer, not only the inductance coefficient of the winding component can be adjusted with high accuracy, but also the first core and the second core can be adjusted. It is possible to suppress the inductance change due to the positional deviation from the core, and to stabilize the performance of the winding component.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a winding component according to an embodiment of the present invention.

FIG. 2 is a plan view of a winding component according to an embodiment of the present invention.

FIG. 3 is a front view of a winding component according to an embodiment of the present invention.

FIG. 4 is a left side view of FIG. 2, showing a winding part according to an embodiment of the present invention.

5 is a right side view of FIG. 2, showing a winding part according to an embodiment of the present invention.

FIG. 6 shows an embodiment of the present invention and is a plan view of a bobbin.

FIG. 7 shows an embodiment of the present invention and is a front view of a bobbin.

FIG. 8 is a side view showing the relative positional relationship between the first core and the second core according to the embodiment of the present invention.

FIG. 9 is a plan view showing a modified example of the bobbin of the present invention.

FIG. 10 is a plan view showing another modified example of the bobbin of the present invention.

FIG. 11 is a plan view showing still another modified example of the bobbin of the present invention.

FIG. 12 is an external perspective view of a main part showing a modified example of the connection terminal of the present invention.

FIG. 13 is a front view showing a modification of the connection terminal of the present invention and showing a surface mounting state on a substrate.

FIG. 14 is a front view showing another modification of the connection terminal of the present invention, showing another mounting state on the substrate.

FIG. 15 is a front view showing another modification of the connection terminal of the present invention, showing another mounting state on the substrate.

FIG. 16 is an exploded perspective view showing a conventional example of a winding component.

FIG. 17 is a plan view showing an example of a conventional winding component.

FIG. 18 is a left side view of FIG. 17, showing a conventional example of a winding component.

FIG. 19 is an enlarged front view of a main part showing an example of a mounted state of a conventional winding component.

FIG. 20 is an enlarged front view of a main part showing another mounted state of the conventional winding component.

[Explanation of reference numerals] 10 winding parts 11 bobbin 11a winding part 11b and 11c terminal mounting part 11d connecting part 12 terminal 13 first core 14 second core 14a notch 14b through hole 15 groove 16 spacer 17 terminal

Front page continuation (72) Inventor Shuichi Hamada 5-36-1 Shimbashi, Minato-ku, Tokyo Fuji Electric Chemical Co., Ltd. (72) Inventor Masaru Shinoda 5-36-11 Shinbashi, Minato-ku, Tokyo Fuji Electric Chemical Co., Ltd. In the company

Claims (4)

[Claims] 1. A winding portion in which a conductor wire is wound in a coil shape,
A bobbin, which is continuously provided on both sides of the winding portion, and includes a terminal mounting portion to which a plurality of terminals to which the end portions of the conductor wires are connected are mounted; and a first bobbin disposed inside the winding portion. A core and a frame-shaped second core arranged so as to surround the outer periphery of the winding part, and the winding part of the bobbin and both terminal mounting parts are fitted with one side of the second core. The terminals are formed with a space to such an extent that they can be connected to each other by a connecting portion provided between them, and at least one of the both terminal mounting portions is connected to the inside of the winding portion through the connecting portion. A winding component, wherein a continuous groove is formed, and a cutout into which the end portion of the first core and the connecting portion are fitted is formed in the second core. 2. The winding component according to claim 1, wherein the terminal of the terminal mounting portion provided with the groove is mounted at a position avoiding the groove. 3. One end of each of the terminals is projected from the terminal mounting portion in the length direction of the winding component, and the other end of the terminal is projected outward from the terminal mounting portion. 2. The conductors are adapted to be selectively connected to their respective ends.
Alternatively, the winding component according to claim 2. 4. The first core is opposed to the bottom surface of the cutout of the second core at a predetermined interval via a spacer, and the space between the first core and both side surfaces of the cutout. Is formed to be larger than the space between the bottom surface and the bottom surface.