JPH07192941A - Electromagnetic equipment - Google Patents

Abstract

PURPOSE:To connect a pair of coils so as not to generate positional displacement in the direction rectangular to the axes of the coils by forming engaging sections to a pair of connecting pieces of one coil and forming engaging sections engaged with the engaging sections when a pair of the connecting pieces are superposed on a pair of connecting pieces of the other coil. CONSTITUTION:Pairs of connecting pieces 41 and 51 are mounted oppositely to collars 23 and 33 on the connecting sides of bobbins 21 and 31 in a primary coil and a secondary coil, and pairs of these connecting pieces 41 and 51 are placed along the axial direction of the coils. Guide projecting sections 42 are formed at centers in the bobbin width direction in pairs of the connecting pieces 41, and a pair of engaging projections 43 are distributed and formed on both side sections in the bobbin width direction holding the guide projecting sections 42. Guide notched sections 52 are shaped at centers in the bobbin width direction in a pair of the connecting pieces 51, and a pair of engaging holes 53 as engaging sections are distributed and formed at places oppositely faced to a pair of the engaging projections 43 of a pair of the connecting pieces 41 on both side sections in the bobbin width direction holding the guide notched sections 52.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electromagnetic device in which a pair of coils each having a winding wound around a bobbin with a collar are arranged on the same axis with the collar of the bobbin facing each other.

[0002]

2. Description of the Related Art An electromagnetic device of this type is used as a leakage transformer in, for example, a ballast for a discharge lamp. Conventionally, it has been disclosed in Japanese Utility Model Publication No. 56-3934 for connecting a pair of coils in this type of electromagnetic equipment.

The structure disclosed in Japanese Utility Model Publication No. 56-3934 will be described with reference to FIGS. 7 and 8. In the figure, reference numeral 1 is a bobbin in which a collar 3 is attached to both ends of a winding tube 2. By winding a winding wire around the bobbin 1, a coil is formed. As shown in FIG. 7, one flange 3 of the bobbin 1 extends diagonally in the coil axis direction and has a protrusion 4a.
A pair of hook-shaped projecting pieces 4 are formed, and a pair of projecting pieces 5 extending in the coil axial direction and having a hole 5a are formed at a position located on a diagonal line orthogonal to the diagonal line.

As shown in FIG. 8, two bobbins 1 are prepared as a primary coil and a secondary coil, and the collars 2 on which the protruding pieces 4 and 5 are formed are opposed to each other and arranged on the same axis. Then, the pair of protruding pieces 4 of one bobbin 1 and the other bobbin 1
The pair of projecting pieces 5 are overlapped with each other, and the projections 4a of the pair of projecting pieces 4 are engaged with the holes 5a of the pair of projecting pieces 5. Further, the pair of projecting pieces 5 of one bobbin 1 and the pair of projecting pieces 4 of the other bobbin 1 are overlapped with each other, and the projections 4s of the pair of projecting pieces 4 are engaged with the holes 5a of the pair of projecting pieces 5. As a result, the pair of bobbins 1 are positioned at two positions in the vertical direction and at two positions in the horizontal direction and are connected so as not to move in the axial direction. Further, an iron core (not shown) is inserted in common in each of the winding cylinders 2 of the pair of bobbins 1 connected to each other on the same axis.

[0005]

However, such a conventional coil connecting structure has the following problems. That is, a total of four projecting pieces of the pair of projecting pieces 4 and the pair of projecting pieces 5 are formed on the flange of the bobbin 1. When connecting the pair of bobbins 1, the pair of projecting pieces of each bobbin 1 is connected. 4 and the pair of projecting pieces 5 are combined with each other and engaged.
For this reason, when connecting a pair of bobbins 1 to each other, that is, a pair of coils to each other, two vertical positions and two horizontal
Since it is necessary to perform positioning at a total of four locations, connecting work is troublesome.

Further, in order to insert an iron core (not shown) in common in each winding tube 2 of a pair of bobbins 1 connected to each other on the same axis, the winding tube 2 of one bobbin 1 is inserted.
It is necessary that the winding cylinder 2 of the other bobbin 1 and the winding cylinder 2 of the other bobbin 1 are not displaced in the direction perpendicular to the coil axis. However, the protrusions 4 of the pair of protruding pieces 4 on one bobbin 1
A gap is provided between the protrusion 4a and the hole 5a for engaging the hole a of the pair of projecting pieces 5 on the other bobbin 1. Therefore, due to the existence of the gap formed between the protrusion 4a of the pair of projecting pieces 4 and the hole 5a of the pair of projecting pieces 5 with which the pair of projecting pieces 4 are engaged, the pair of bobbins 1 connected to each other has a coil axis (bobbin axis line). ) May be misaligned in a direction perpendicular to. As a result, the winding cylinder 2 of one bobbin 1
And the winding cylinder 2 of the other bobbin 1 are displaced from each other in the direction perpendicular to the coil axis to create a step, and it is difficult to insert the iron core into the winding cylinders 2 of the pair of bobbins 1 in common. May become.

The present invention has been made in view of the above circumstances, and it is possible to connect a pair of coils to each other by a simple operation and to position the pair of coils in a direction along a direction perpendicular to the axis thereof. It is an object of the present invention to provide an electromagnetic device that can be connected without causing a shift.

[0008]

In order to achieve the above object, the electromagnetic equipment of the present invention is such that a winding is wound around a bobbin with a collar and a pair of coils are provided on the same axis line with the collar of the bobbin facing each other. In the electromagnetic device arranged in the above, the bobbin collar of any one of the coils is provided with a pair of connecting pieces along the coil axis direction with the coil axis sandwiched therebetween, and the other of the coil pieces facing the bobbin collar of the one coil. The bobbin collar of the coil is provided with a pair of connecting pieces that overlap in the coil axial direction and overlap the inner side of the pair of connecting pieces with the coil axis sandwiched therebetween, and provided on one of the bobbin collars of the coil. The pair of connecting pieces are formed with guide protrusions each having a pair of inclined sides intersecting with each other on the coil axis, and the pair of connecting pieces provided on the collar of the bobbin of the other coil is formed on the pair of connecting pieces. A guide notch having a pair of inclined sides that is combined with a pair of inclined sides of the guide protrusion when the pair of connecting pieces are overlapped with each other is formed, and engages with the pair of connecting pieces of one of the coils. And a pair of connecting pieces of the other coil is formed with an engaging portion that engages with the engaging portion when the pair of connecting pieces overlap each other.

[0009]

According to the above construction, a pair of coils, each having a winding wound around a bobbin with a collar, are arranged on the same axis, for example, on a horizontal axis with the collar of the bobbin facing each other. An engaging portion formed on a pair of connecting pieces provided on the collar of the bobbin of one coil, for example, a protrusion, and an engaging portion formed on a pair of connecting pieces provided on the collar of the bobbin of the other coil, For example, by engaging with the hole, they are coupled so as not to move in the coil axial direction.

The pair of connecting pieces provided on the collar of the bobbin of the other coil are superposed on the inside of the pair of connecting pieces provided on the collar of the bobbin of the one coil, thereby forming a pair of coils. It is positioned at a predetermined position in a direction perpendicular to the coil axis direction, for example, in the vertical direction.

Further, guide notches having a pair of inclined sides intersecting with each other on the coil axis formed on a pair of connecting pieces of the bobbin of one coil, and a pair of connecting pieces of the bobbin of the other coil. The pair of coils are mutually combined with the guide protrusion having the pair of connecting pieces that are combined with the pair of inclined sides of the guide notch, so that the pair of coils is perpendicular to the coil axis direction, for example, in the left-right direction. Positioned in place. This position is a position where the winding cylinder of the bobbin of one coil and the winding cylinder of the bobbin of the other coil are located on the same axis, and the iron core can be inserted therethrough.

That is, by combining the pair of inclined sides of the guide notch and the pair of inclined sides of the guide protrusion,
The lateral movement of each connecting piece is restricted. Here, when the engaging portion formed on the pair of connecting pieces of the one coil and the engaging portion formed on the pair of connecting pieces of the other coil are engaged with each other, the engaging portion between the two is engaged. Although there is a gap for enabling the connection, regardless of the presence of this gap, the connecting piece of each coil does not move in the left-right direction and can be positioned stably with high accuracy.

When connecting a pair of coils, the pair of coils are arranged, for example, on a horizontal axis with the collars of the bobbins facing each other, and inside the pair of connecting pieces of the bobbin of one coil. The pair of connecting pieces of the bobbin of the other coil are inserted and overlapped with each other, and the pair of coils are moved toward each other. While moving the pair of coils, the guide notches formed on the pair of connecting pieces of the bobbin of one coil and the guide protrusions formed on the pair of connecting pieces of the bobbin of the other coil enter and guide each other. The pair of slanted sides of the cutout portion and the pair of slanted sides of the guide protruding portion are in contact with each other. Then, each connecting piece, that is, each coil is automatically positioned at a predetermined position in the left-right direction by being guided by the pair of inclined sides of the guide notch and the pair of inclined sides of the guide protrusion.

Further, the engaging portions formed on the pair of connecting pieces of one coil are engaged with the engaging portions formed on the pair of connecting pieces of the other coil.

Therefore, in this way, one coil can be operated by one simple operation of superposing the pair of connecting pieces of one coil and the pair of connecting pieces of the other coil and moving them in a direction in which they approach each other. Since the vertical and horizontal positions of the other coil and the other coil can be easily positioned and the coils can be connected in the axial direction, the workability of connecting the pair of coils can be improved.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings.

This embodiment is intended for a leakage transformer provided in a ballast for a discharge lamp, and is provided with a primary coil 11 and a secondary coil 12, and these primary coil 11 and secondary coil 12 are provided.
It is configured by combining the central leg iron core and the side leg.

1 to 4 show a primary coil 11 and a secondary coil 12. The primary coil 11 is a winding tube 22.
Bobbin 21 having collars 23 and 24 attached to both ends of
The bobbin 21 is composed of a winding wire 25 wound around a winding cylinder 22. The secondary coil 12 is composed of a bobbin 31 having collars 33 and 34 attached to both ends of a winding tube 32, and a winding 35 wound around the winding tube 32 of the bobbin 31. The bobbin 21 and the bobbin 31 are formed of elastic 6 nylon or the like.

The primary coil 11 and the secondary coil 12 are arranged on the same axis as shown in FIGS. 3 and 4, and one collar 23 of the bobbin 21 and one collar 3 of the bobbin 31.
3 are opposed to each other, and the collar 23 and the collar 33 are connected by a configuration described later. A terminal metal fitting (not shown) is attached to one of the collars 24 of the bobbin 21 and one of the collars 34 of the bobbin 31.

A coil center axis OO (winding cylinders 22, 3) is provided on the collar 23 on the coupling side of the bobbin 21 in the primary coil 11.
2 center axis), a pair of connecting pieces 41 are attached facing each other at a position equidistant from the coil center axis OO, and the pair of connecting pieces 41 have the same size along the coil axis direction. Have

A guide protrusion 42 is formed in the center of the pair of connecting pieces 41 in the bobbin width direction, and a pair of engaging members, which are an example of engaging portions, are formed on both sides of the guide protrusion 42 in the bobbin width direction. The mating protrusions 43 are formed separately.

The guide protrusion 42 has a V-shape having a pair of inclined sides 42a, and is located with its apex facing the tip edges of the pair of connecting pieces 41 on the coil center axis OO. That is, the pair of inclined sides 42 a of the guide protrusion 42.
Extends from the brim 23 toward the front of the front end edges of the pair of connecting pieces 41 and intersects on the coil center axis OO, and the inclination angles with respect to the coil center axis OO are the same. . The pair of engaging protrusions 43 has a rectangular shape.

A pair of connecting pieces 51 are attached to the collar 33 on the connecting side of the bobbin 31 in the secondary coil 12 so as to face each other at an equal distance from the coil center axis OO with the coil center axis OO interposed therebetween. The pair of connecting pieces 51 have the same size along the coil axis direction.
The pair of connecting pieces 51 are inserted between the pair of connecting pieces 41 of the bobbin 21 in the primary coil 11 and overlap the inner side surfaces of the pair of connecting pieces 41, and are provided at positions where this is possible.

A guide notch 52 is formed at the center of the pair of connecting pieces 51 in the bobbin width direction, and a pair of engaging pieces of the pair of connecting pieces 41 are provided on both sides of the bobbin width direction sandwiching the guide notch 52. A pair of engagement holes 53, which is an example of an engagement portion, are formed separately at positions facing the protrusions 43.

The guide notch 52 is V-shaped to be combined with the guide protrusions 42 of the pair of connecting pieces 41 of the primary coil 11, and has a pair of inclined sides 42a of the guide protrusion 42.
Has a pair of inclined sides 52a combined with each other. The guide notch 52 is located on the coil center axis OO with its apex facing the brim 33. That is, the guide notch 5
The pair of inclined sides 52a of the two extend from the tip edges of the pair of connecting pieces 51 toward the brim 33 and intersect on the coil center axis O-O.
The inclination angle with respect to −O is the same as that of the pair of inclined sides 42a of the guide protrusion 42.

The pair of engaging holes 53 engages with the pair of engaging protrusions 43 formed on the pair of connecting pieces 41, and is a rectangle having a size into which the pair of engaging protrusions 43 are inserted and engaged. Is doing.

The collar 23 of the bobbin 21 of the primary coil 11 and the collar 3 of the bobbin 31 of the secondary coil 12 configured as described above.
3 is connected by the operation described below. That is, FIG.
And the collar 23 of the bobbin 21 and the bobbin 3 as shown in FIG.
The pair of coils 11 and 12 are arranged, for example, on a horizontal axis with the collar 33 of one facing each other, and inside the pair of connecting pieces 41 of the bobbin 21 of the primary coil 11, as shown in FIG. 5 and FIG. The pair of connecting pieces 51 of the bobbin 31 of the secondary coil 12 is inserted and overlapped, and the primary coil 11 and the secondary coil 1 are inserted.
Move 2 toward each other. Here, the primary coil 11 and the secondary coil 12 are positioned at predetermined positions in the vertical direction.

While moving the pair of coils 11 and 12, the guide protrusion 42 formed on the pair of connecting pieces 41 of the bobbin 21 of the primary coil 11 and the bobbin 3 of the secondary coil 12 are moved.
The guide notches 52 formed in the pair of connecting pieces 51 of the first pair enter into each other, and the pair of inclined sides 42 a of the guide protrusion 42.
And the pair of inclined sides 52a of the guide notch 52 are in contact with each other. Each of the connecting pieces 51, 52, that is, the primary coil 11 and the secondary coil 12 is guided by the pair of inclined sides 42a of the guide protrusion 42 and the pair of inclined sides 52a of the guide cutout 52, and is predetermined in the left-right direction. Positioned automatically in position.

Further, a pair of connecting pieces 41 of the primary coil 11
The engaging projections 43 formed on the above are engaged with the engaging portions 53 formed on the pair of connecting pieces 51 of the secondary coil 12.

Therefore, the primary coil 11 and the primary coil 11 can be operated by a simple operation in which the pair of connecting pieces 41 of the primary coil 11 and the pair of connecting pieces 51 of the secondary coil 12 are overlapped with each other and moved in a direction toward each other. The secondary coil 12 can be easily positioned in the up-down direction and the left-right direction, and at the same time, can be connected in the axial direction, and the workability of the work of connecting the primary coil 11 and the secondary coil 12 can be improved.

The bobbin winding cylinder of the primary coil 11 and the bobbin winding cylinder of the secondary coil 11 are commonly inserted and combined with the iron core 61.

Such a primary coil 11 and a secondary coil 1
In the configuration in which 2 is connected to the bobbin 2 of the primary coil 11,
The engaging projections formed on the pair of connecting pieces 41 provided on the one collar 23, and the engaging holes 53 formed on the pair of connecting pieces 51 provided on the collar 33 of the bobbin 31 of the secondary coil 12. By engaging the primary coil 11 with the secondary coil 12
The coils are connected so as not to move in the axial direction.

Then, the pair of connecting pieces 51 provided on the bobbin 51 of the secondary coil 12 are superposed on the inside of the pair of connecting pieces 41 provided on the bobbin 41 of the primary coil 11, whereby the primary coil 11 is formed. And the secondary coil 12 are positioned at predetermined positions in a direction perpendicular to the coil axis direction, for example, in the vertical direction.

The guide projection 42 having a pair of inclined sides 42a intersecting each other on the coil axis formed on the pair of connecting pieces 41 of the bobbin 21 of the primary coil 11 and the pair of the bobbin 31 of the secondary coil 12 are provided. The pair of inclined sides 52a of the guide cutout portion 52 formed in the connecting piece 51 of FIG.
Is positioned at a predetermined position in a direction perpendicular to the coil axis direction, for example, in the left-right direction. This position is a position where the winding cylinder 22 of the bobbin 21 of the primary coil 11 and the winding cylinder 32 of the bobbin 31 of the secondary coil 12 are located on the same axis and the iron core 61 can be inserted therethrough.

That is, the combination of the pair of inclined sides 42a of the guide protrusion 42 and the pair of inclined sides 52a of the guide cutout 52 restricts the lateral movement of the connecting pieces 41, 51. Here, the connecting piece 4 of the primary coil 11
When the engaging protrusion 43 formed on the first coil member 1 and the engaging hole 53 formed on the connecting piece 51 of the secondary coil 12 are engaged with each other, a gap for enabling engagement between the two. However, regardless of the presence of this gap, the connecting pieces 41 and 51 of the primary coil 11 and the secondary coil 12 do not move in the left-right direction and can be positioned stably with high accuracy.

Further, in this embodiment, the inclined surface 41a is provided at the tip edge of the connecting piece 41 of the primary coil 11 and the secondary coil 12 is provided.
Of the connecting piece 51 of the
By forming the inclined surfaces 43a respectively, the connection work can be performed more easily.

The present invention is not limited to the above-mentioned embodiments, but can be modified in various ways.

For example, a guide notch may be formed on the connecting piece provided on the bobbin of the primary coil, and a proper projection may be formed on the connecting piece provided on the bobbin of the secondary coil. Further, the engaging hole may be formed in the connecting piece provided on the bobbin of the primary coil, and the fitting protrusion may be formed on the connecting piece provided on the bobbin of the secondary coil.

The present invention can be widely applied to electromagnetic equipment regardless of the leakage transformer.

[0040]

As described above, according to the electromagnetic device of the present invention, the engaging portion formed on the pair of connecting pieces provided on the collar of the bobbin of one coil and the collar of the bobbin of the other coil. The pair of coupling pieces provided on the pair are engaged with the engaging portions, and the pair of coils are coupled so as not to move in the axial direction.

Then, the pair of connecting pieces of the bobbin of the other coil are superposed on the inside of the pair of connecting pieces of the bobbin of the one coil, so that the pair of coils are perpendicular to the coil axis direction, For example, it is positioned at a predetermined position in the vertical direction.

Further, the guide notch has a pair of inclined sides formed on the pair of connecting pieces of the bobbin of one coil, and the pair of inclined sides formed on the pair of connecting pieces of the bobbin of the other coil. By combining the guide protrusions with each other, the pair of coils is positioned at a predetermined position in a direction perpendicular to the coil axis direction, for example, the left-right direction. Therefore, when the engaging portion of the connecting piece of one coil and the engaging portion of the connecting piece of the other coil are engaged with each other, each coil is moved in the left-right direction regardless of the existence of a gap between the two. It does not move and is positioned with high accuracy and stability.

Furthermore, when the work of connecting a pair of coils is performed, inside the connecting piece of the bobbin of one coil,
While the pair of connecting pieces of the bobbin of the other coil is inserted and overlapped with each other, and the pair of coils is moved in the direction of approaching each other, the pair of inclinations of the guide protrusions in the pair of connecting pieces of one coil are inclined. The connecting piece, that is, each coil is positioned at a predetermined position in the left-right direction by being guided by the side and the pair of inclined sides of the guide notch portion of the pair of connecting pieces of the bobbin of the other coil.

Therefore, one coil and the other coil can be simply operated by superposing the pair of connecting pieces of one coil and the pair of connecting pieces of the other coil and moving them in a direction in which they approach each other. Since the vertical positioning and the horizontal positioning can be easily performed, and the axial coupling is also performed, workability of the work of coupling the pair of coils can be improved.

[Brief description of drawings]

FIG. 1 is a perspective view showing a coil according to an embodiment of the present invention.

FIG. 2 is a front view showing the coil of the embodiment.

FIG. 3 is a plan view showing a coil of the example.

FIG. 4 is a side view showing the coil of the embodiment.

FIG. 5 is a plan view showing a state in which a pair of coils are connected in the embodiment.

FIG. 6 is a cross-sectional view showing a state in which a pair of coils are connected in the same embodiment.

FIG. 7 is a diagram showing an example of a conventional coil.

FIG. 8 is a diagram showing an example of a conventional coil.

[Explanation of symbols]

11 ... Primary coil, 12 ... Secondary coil,
21 ... Bobbin, 23, 24 ... Tsuba, 25 ... Winding, 31 ... Bobbin, 33, 34 ...
Collar, 35 ... Winding, 41 ... Coupling piece, 42 ... Guide protrusion, 43 ... Engagement protrusion, 51 ... Coupling piece, 52 ... Guide notch, 53 ... Engagement hole.

Claims (1)

[Claims] 1. In an electromagnetic device in which a pair of coils, each having a winding wound around a bobbin with a collar, are arranged on the same axis with the collar of the bobbin facing each other, in the collar of the bobbin of any one of the coils, A pair of connecting pieces extending along the coil axis direction are provided so as to sandwich the coil axis line, and a pair of connecting pieces are provided along the coil axis direction to the collar of the bobbin of the other coil that faces the collar of the bobbin of the one coil. A pair of connecting pieces that overlap each other on the inner side of the coil axis are provided so as to sandwich the coil axis, and one of the pair of connecting pieces provided on the collar of the bobbin of one of the coils has a pair of connecting pieces that intersect each other on the coil axis. Guide protrusions each having an inclined side are formed, and the pair of connecting pieces provided on the collar of the bobbin of the other coil includes the guide protruding portions when the pair of connecting pieces overlap each other. A guide notch having a pair of inclined sides combined with a pair of inclined sides is formed, and an engaging portion is formed on a pair of connecting pieces of one of the coils, and a pair of connecting pieces of the other coil is formed. An electromagnetic device, wherein an engaging portion is formed that engages with the engaging portion when the pair of connecting pieces are overlapped with each other.