JP3329287B2 - Trance - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transformer for use in various consumer appliances.

[0002]

2. Description of the Related Art A conventional transformer will be described below with reference to the drawings.

FIG. 6 is a plan sectional view of a conventional transformer.
Is a bottom view of the transformer, FIG. 8 is a perspective view of the transformer, and FIG. 9 is a plan view of the transformer.

In FIG. 6 to FIG. 9, a conventional transformer is
A plurality of terminals 31 are implanted and the first through holes 32
, A thin plate-shaped bobbin 35 having a second through-hole 34, a thin plate-shaped bobbin 35 having a second through hole 34, and a terminal 31
A first winding 36 connected to the first winding 36, a second winding 37 wound around the outside of the first winding 36 and connected to the terminal 31, a first through hole 32 and a second through hole 32. A center leg 38 is inserted into the hole 34, and a closed core magnetic core 39 is formed by combining two sets of E-shaped magnetic cores from above and below.

The terminal 31 has first and second windings 36,
A connecting portion 40 to be connected to the terminal block 33 protrudes from both ends of the terminal block 33 facing each other, and a mounting section 41 for mounting is mounted on the terminal block 33.
Protrude from both opposite end surfaces facing each other.

Further, the first winding 36 is wound around a winding frame 35 by winding a winding start portion 43 and a winding end portion 44 from the connection portion 40 of the terminal 31 on the terminal block 33.
The second winding 37 is similarly wound outside the first winding 36.

The first winding 36 is set to the low voltage side,
The configuration is such that the second winding 37 is on the high voltage side.

[0008]

In the above-mentioned conventional configuration,
As with the first winding 36, the second winding 37 is
3, the winding start portion 43 and the winding end portion 44 are wound around the connection portion 40 of the terminal 31 and wound around the winding frame 35, so that the winding end portion 44 of the second winding 37 becomes the second winding end. The wire 37 intersects the winding start portion 43.

In particular, when the vertical dimension is reduced in order to reduce the height, the second winding 37 has its winding end 44 completely intersecting with the winding start 43.

[0010] Thereby, especially when the height is reduced,
There is a problem that a short circuit occurs at the intersection between the winding end portion 44 and the winding start portion 43 of the second winding 37 that outputs a high voltage.

The present invention solves the above-mentioned problems, and even if the height is reduced, the end of the second winding which outputs a high voltage and the start of the winding are prevented from intersecting to generate a short circuit. The purpose of the present invention is to provide a transformer in which the noise is prevented.

[0012]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a method for manufacturing a terminal, comprising the steps of: implanting a plurality of terminals; A winding frame having a second through-hole; a first winding wound around the winding frame and connected to the terminal;
And a second core connected to the terminal and a magnetic core inserted in the first through-hole and the second through-hole. 1st, 2nd
The connecting portion to be connected to the winding of the terminal block protrudes at both end faces of the terminal block facing each other, the terminal block is provided with a hole from both end faces toward the first through-hole, the hole , Tip
Is provided and the depth of the tapered portion is
The first winding has a dimension up to the inside of the outermost diameter portion, and the second winding has a winding start portion connected to the connection portion, and a lower surface of the terminal block through the hole portion, wound on the winding frame, which is a winding end portion is connected with the structure in the connecting part.

According to the above configuration, even when the vertical dimension is reduced in order to reduce the height, the second winding has its winding start portion connected to the connection portions projecting from the opposite end surfaces of the terminal block. Then, from the lower surface of the terminal block, through the holes provided from both end surfaces of the terminal block toward the first through hole, the terminal block is wound around the bobbin, and the winding end portion is connected to the connection portion. The winding start part of the second winding is not wound around the terminal block, and the intersection between the winding start part and the winding end part can be suppressed.

The winding start of the second winding is connected to the terminal.
From the connection part, to the winding frame through the hole from the lower surface of the terminal block
When winding, set a tapered part in the hole to enlarge the tip.
The winding start of the second winding is formed by the tapered portion.
Position is restricted to prevent the second winding from coming out of the hole.
Can be controlled.

Further, since the depth of the hole is set to the size up to the outermost diameter portion of the first winding or to the size inside the outermost diameter portion, the winding start portion of the second winding is formed. Can be accurately wound around the winding frame from the winding end of the first winding, and the winding start of the second winding is not wound around the terminal block. Intersection with the winding end can be suppressed as much as possible, and occurrence of a short circuit can be prevented.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION
A plurality of terminals are implanted, a terminal block having a first through-hole, a winding frame having a second through-hole disposed on the terminal block, and winding the winding frame. A first winding connected to the terminal, a second winding wound outside the first winding and connected to the terminal, the first through hole and the second winding. And a magnetic core inserted into a through-hole, wherein the terminal protrudes connecting portions for connecting to the first and second windings on opposite end surfaces of the terminal block, and the terminal block is more A hole portion is provided toward the first through hole, and the hole portion has a tip portion enlarged.
A tapered portion is provided, and the depth of the tapered portion is
Has the dimensions to the inside of the outermost diameter portion, said second winding, a winding start portion connected to the connecting portion, through the hole from the lower surface of the terminal block, around the said winding frame Turn, it is the end of winding a connection with the structures in the connecting portion.

With the above configuration, even when the vertical dimension is reduced in order to reduce the height, the second winding has its winding start portion connected to the connection portions projecting from the opposite end surfaces of the terminal block. Then, from the lower surface of the terminal block, through the holes provided from both end surfaces of the terminal block toward the first through hole, the terminal block is wound around the bobbin, and the winding end portion is connected to the connection portion. The winding start part of the second winding is not wound around the terminal block, and the intersection between the winding start part and the winding end part can be suppressed.

The winding start of the second winding is connected to the terminal.
From the connection part, to the winding frame through the hole from the lower surface of the terminal block
When winding, set a tapered part in the hole to enlarge the tip.
The winding start of the second winding is formed by the tapered portion.
Position is restricted to prevent the second winding from coming out of the hole.
Can be controlled.

Further, since the depth of the hole is set to the size of the outermost diameter portion of the first winding or to the inside of the outermost diameter portion, the winding start portion of the second winding is formed. From the winding end of the first winding, it is possible to accurately wind the winding frame,
The winding start portion of the second winding is not wound around the terminal block, so that the intersection between the winding start portion and the winding end portion can be suppressed as much as possible, and the occurrence of a short circuit can be prevented.

The second aspect of the present invention is the first aspect.
In the invention described above, a projection is provided adjacent to the hole, and a second winding is routed between the projection and a tip of the hole.

With the above arrangement, the projection is provided adjacent to the hole, and the second winding is routed between the projection and the tip of the hole. When winding around the bobbin via the hole from the lower surface of the terminal block from the connection between the start portion and the terminal, the position at the hole can be regulated and the second winding can be prevented from coming off.

The third aspect of the present invention is the first aspect of the present invention.
In the invention described in the above, the terminal block has a mounting portion on which the bobbin is mounted.
And a width equal to or greater than the width of the first through hole is formed on the lower surface of the mounting portion.
A magnetic core recess for arranging the magnetic core,
On both sides of the core recess, the terminals are sandwiched between the magnetic core recesses.
And a terminal base for implanting the terminal base.
An end face wall is provided on the end face facing the
The configuration is such that the end wall is provided.

According to the above configuration, since the magnetic core concave portion for disposing the magnetic core is provided on the lower surface of the mounting portion of the terminal block, the thickness of the magnetic core can be absorbed by the magnetic core concave portion. Can be reduced, and the height can be reduced. In particular, since the width of the magnetic core concave portion is set to be equal to or greater than the width of the first through hole, the magnetic core concave portion is arbitrarily thinned so as not to hinder the magnetic flux efficiency of the magnetic core. You can place the wick,
The height can be further reduced.

[0024] Further, a terminal base portion on which the terminals are implanted is provided on both sides of the magnetic core concave portion so as to sandwich the magnetic core concave portion, and end face walls are provided on opposite end surfaces of the terminal base portion. ,
Since the hole is provided up to the end face wall, the terminal can be implanted in the terminal block and the hole can be provided.

Furthermore, since the hole is provided up to the end wall of the terminal base, the hole does not penetrate the end wall, and the strength of the terminal block is improved by the end wall. In particular,
Terminals are implanted in the terminal base, so the terminal base is liable to crack or crack.However, the end wall increases the strength of the terminal base, causing cracks and cracks. Can be prevented.

The invention according to claim 4 of the present invention is the invention according to claim 3.
In the described invention, only the end face wall corresponding to the hole is the first wall.
And the end wall is in contact with the through hole.

According to the above configuration, the leading end of the hole can be arranged to the vicinity of the first through hole, and the winding start of the second winding is shifted from the winding end of the first winding to the winding frame. It can be wound accurately, the winding start of the second winding is not wound on the terminal block, the intersection between the winding start and the winding end can be suppressed as much as possible, and the occurrence of a short circuit can be prevented. can do.

Further, since only the end wall corresponding to the hole is a protruding end wall which contacts the first through-hole, the width of the magnetic core concave portion is not reduced as much as possible. The height can be reduced.

The fifth aspect of the present invention provides the third aspect.
In the described invention, only the end face wall corresponding to the hole is the first wall.
And a projecting end face wall that contacts the through hole of
The magnetic core is provided with a fitting concave portion that fits into the protruding end wall.
You.

According to the above configuration, the leading end of the hole can be disposed to the vicinity of the first through hole, and the winding start of the second winding is shifted from the winding end of the first winding to the winding frame. The winding can be accurately wound, and the winding start portion of the second winding can be prevented from being wound around the terminal block, and the intersection between the winding start portion and the winding end portion can be suppressed as much as possible. Can be prevented.

Also, since only the end face wall corresponding to the hole is a protruding end face wall that contacts the first through hole, the width of the magnetic core concave portion is not reduced as much as possible, and a magnetic core having a small thickness is used. The height can be reduced.

Further, since the magnetic core is provided with a fitting concave portion that fits into the protruding end face wall, the width of the magnetic core can be reduced to the width of the magnetic core concave portion, and the magnetic flux efficiency of the magnetic core is reduced as much as possible. Without any hindrance, the magnetic core whose thickness is arbitrarily reduced can be arranged in the magnetic core concave portion, and the height can be reduced.

(Embodiment) A transformer according to an embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a plan sectional view of a transformer according to an embodiment of the present invention, FIG. 2 is a bottom view of the transformer, FIG. 3 is a perspective view of the transformer, FIG. 4 is a plan view of the transformer, and FIG.
FIG. 3 is a bottom perspective view of the transformer.

1 to 5, a transformer according to an embodiment of the present invention has a terminal block 3 having eight terminals 1 implanted therein and having a first through hole 2, and a terminal block 3 having a first through hole 2.
A winding frame 5 having a second through-hole 4
And a first winding 6 wound around the winding frame 5 and connected to the terminal 1, and a second winding wound around the outside of the first winding 6 and connected to the terminal 1. 7, the middle foot 8 is inserted into the first through hole 2 and the second through hole 4, and two sets of E
A magnetic core 9 having a closed magnetic path formed by combining letter-shaped magnetic cores from above and below.

The terminal 1 has connecting portions 10 connected to the first and second windings 6 and 7 projecting from both end surfaces of the terminal block 3 facing each other.
A mounting portion 11 for mounting is protruded from both opposite end surfaces of the terminal block 3 opposite to each other. The terminal block 3 has a hole 12 from both end surfaces toward the first through hole 2. Winding 7
Connects the winding start portion 13 to the connection portion 10, winds the winding frame 5 from the lower surface of the terminal block 3 through the hole portion 12, connects the winding end portion 14 to the connection portion 10, and
Has the depth (H) as a dimension up to the inside of the outermost diameter portion 15 of the first winding 6.

At this time, the terminal 1 is implanted so that two connecting portions 10 protrude on both sides of the hole 12, and the first terminal 1 is attached to the outermost terminal 1 on one end surface of the terminal block 3. The winding 6 is connected, and the second winding 7 is connected to the outermost terminal 1 on the other end surface.

Further, a projection 16 is provided adjacent to the hole 12, and the second winding 7 is routed between the projection 16 and the tip 17 of the hole 12. , A tapered portion 18 whose tip portion 17 is enlarged.

The terminal block 3 has a mounting portion on which the windings 5 are mounted, and a magnetic core 9 disposed on the lower surface of the mounting portion and having a width greater than the width of the first through hole 2. Magnetic core recess 19
And a terminal base portion 20 on which the terminals 1 are implanted on both sides of the magnetic core concave portion 19 so as to sandwich the magnetic core concave portion 19 therebetween. 21 and the hole 12 is provided up to the end face wall 21.

Further, only the end wall 21 corresponding to the hole 12 is a protruding end wall 22 that contacts the first through hole 2, and a fitting recess 23 that fits into the protruding end wall 22 is provided on the magnetic core 9. ing. At this time, the magnetic core 9 is
This is a configuration in which an E-shaped magnetic core having a number 3 is formed in a vertical combination.

The operation of the transformer having the above configuration will be described below.

With the above configuration, even when the vertical dimension is reduced in order to reduce the height, the second winding 7 has the winding start portion 13 protruding from the opposite end surfaces of the terminal block 3. The terminal end 3 is wound around the winding frame 5 from the lower surface of the terminal base 3 through the holes 12 provided from both end surfaces of the terminal base 3 toward the first through hole 2, and the winding end 14 is formed. Connection part 10
, The winding start portion 13 of the second winding 7
However, the crossing of the winding start portion 13 and the winding end portion 14 can be suppressed without being wound around the terminal block 3. At this time, the second winding 7 has the hole 12
The turning point (A) is the outermost diameter portion 15 of the first winding 6, and even if the second winding 7 is sequentially wound, the winding start portion 13 and the winding end portion 14 intersect. I haven't.

[0043] Furthermore, the hole portion 12, since the dimensions of the depth (H) to the inside of the outermost diameter portion 15 of the first winding 6, the winding start portion 13 of the second winding 7 From the outermost diameter portion 15 at the end of the winding of the first winding 6, the winding can be accurately wound around the winding frame 5, and the winding start portion 13 of the second winding 7 can be wound around the terminal block 3. The intersection between the winding start portion 13 and the winding end portion 14 can be suppressed as much as possible, and the occurrence of a short circuit can be prevented.

Further, since the projection 16 is provided adjacent to the hole 12, and the second winding 7 is routed between the projection 16 and the tip 17 of the hole 12, the second winding 7 is provided. When winding the winding start portion 13 of the winding 7 from the connection portion 10 of the terminal 1 to the winding frame 5 from the lower surface of the terminal block 3 through the hole portion 12,
2, the second winding 7 can be prevented from coming off from the hole 12.

Further, the winding start portion 13 of the second winding 7 is connected to the connection portion 10 of the terminal 1 and the hole 12
When the winding 12 is wound around the winding frame 5, the tapered portion 18 in which the tip portion 17 is enlarged is provided in the hole 12, so that the winding start portion 13 of the second winding 7 is formed by the tapered portion 18. The position is regulated, and it is possible to prevent the second winding 7 from coming off the hole 12.

Then, the magnetic core concave portion 19 in which the magnetic core 9 is arranged
Is provided on the lower surface of the mounting portion of the terminal block 3, so that the thickness of the magnetic core 9 can be absorbed by the magnetic core concave portion 19, so that the vertical dimension can be reduced and the height can be reduced. In particular, since the width of the magnetic core concave portion 19 is set to be equal to or greater than the width of the first through hole 2, the magnetic core concave portion 19 may have any thickness so as not to hinder the magnetic flux efficiency of the magnetic core 9. The magnetic core 9 having a reduced thickness can be arranged, and the height can be further reduced.

In addition, the terminal base 20 for implanting the terminal 1
Are provided on both sides of the magnetic core concave portion 19 so as to sandwich the magnetic core concave portion 19, and the end wall 21 is provided on the end faces of the terminal base portion 20 facing each other, and the hole portion 12 is provided up to the end wall 21. Therefore, the terminal 1 can be implanted in the terminal block 3 and the hole 12 can be provided. At this time, since the hole 12 is provided up to the end wall 21 of the terminal base 20, the hole 12 does not penetrate the end wall 21, and the strength of the terminal block 3 is improved by the end wall 21. I have. In particular, since the terminal 1 is implanted in the terminal base 20, the terminal base 20 is easily broken or cracked, but the strength of the terminal base 20 is improved by the end wall 21. , Cracks and cracks can be prevented.

Further, only the end face wall 21 corresponding to the hole 12 is a protruding end face wall 22 contacting the first through hole 2, and a fitting recessed part 23 fitted to the protruding end face wall 22 is provided on the magnetic core 9. As a result, the tip portion 17 of the hole 12 can be arranged to the vicinity of the first through hole 2, and the winding start portion 13 of the second winding 7 is connected to the outermost diameter portion 15 of the first winding 6. Thus, the winding can be accurately wound around the winding frame 5, and the winding start portion 13 of the second winding 7 is not wound around on the terminal block 3, and the winding start portion 13 and the winding end portion 14 are formed. Can be suppressed as much as possible, and occurrence of a short circuit can be prevented.

In particular, since only the end wall 21 corresponding to the hole 12 is the protruding end wall 22 that contacts the first through hole 2, the width of the magnetic core concave portion 19 is not reduced as much as possible, and the magnetic core 19 is thin. By using the core 9, the height can be reduced, and a fitting recess 23 fitted to the protruding end face wall 22.
Is provided in the magnetic core 9, the width of the magnetic core 9 can be set to the width of the magnetic core concave portion 19, and the magnetic flux efficiency of the magnetic core 9 is not hindered as much as possible. The magnetic core 9 whose thickness is arbitrarily reduced can be arranged, and the height can be reduced.

As described above, according to the embodiment of the present invention, the winding start portion 13 of the second winding 7 is kept in the first winding position even when the vertical dimension is reduced in order to reduce the height. Winding 6
From the outermost diameter portion 15 of the second winding 7, the winding start portion 13 of the second winding 7 is not wound around the terminal block 3, and the winding start portion 13 And the winding end portion 14 can be suppressed as much as possible, and the occurrence of a short circuit can be prevented.

When winding the winding start portion 13 of the second winding 7 from the connection portion 10 of the terminal 1 to the winding frame 5 from the lower surface of the terminal block 3 through the hole 12, The position can be regulated at 12 and also the position can be regulated at the tapered portion 18.
The second winding 7 can be prevented from coming off the hole 12.

Further, the terminal 1 is implanted in the terminal block 3, the hole 12 is provided, and the thickness of the magnetic core recess 19 is arbitrarily reduced so as not to hinder the magnetic flux efficiency of the magnetic core 9. The magnetic core 9 can be disposed, the height can be further reduced, the strength of the terminal base 20 can be improved, and the occurrence of cracks and cracks can be prevented.

Only the end wall 21 corresponding to the hole 12 is a protruding end wall 22 contacting the first through hole 2, and a fitting recess 23 is provided in the magnetic core 9 to be fitted to the protruding end wall 22. As a result, the tip portion 17 of the hole 12 can be arranged to the vicinity of the first through hole 2, and the winding start portion 13 of the second winding 7 is connected to the outermost diameter portion 15 of the first winding 6. Thus, the winding can be accurately wound around the winding frame 5, the intersection of the winding start portion 13 and the winding end portion 14 can be suppressed as much as possible, and the occurrence of a short circuit can be prevented.

In particular, since only the end wall 21 corresponding to the hole 12 is the protruding end wall 22 that contacts the first through hole 2, the width of the magnetic core concave portion 19 is not reduced as much as possible, and the magnetic core having a small thickness is formed. By using the core 9, the height can be reduced, and the fitting recess 23 that fits into the protruding end face wall 22 is provided on the magnetic core 9, so that the magnetic flux efficiency of the magnetic core 9 is not hindered as much as possible. The magnetic core 9 whose thickness is arbitrarily reduced can be arranged in the core concave portion 19, and the height can be reduced.

In the embodiment of the present invention, the terminal block 3, the magnetic core 9, the winding frame 5, the first and the second windings 6, 7 are of a bare type, and these are made of insulating resin. The same effect can be obtained by forming a mold type by covering with a mold.

[0056]

As described above, according to the present invention, even if the vertical dimension is reduced in order to reduce the height,
From the winding end of the first winding to the winding end of the first winding,
The winding can be accurately wound around the winding frame, the winding start of the second winding is not wound around the terminal block, the intersection between the winding start and winding end can be suppressed as much as possible, and The transformer which prevented generation | occurrence | production of can be provided.

[Brief description of the drawings]

FIG. 1 is a plan sectional view of a transformer according to an embodiment of the present invention.

FIG. 2 is a bottom view of the transformer.

FIG. 3 is a perspective view of the transformer.

FIG. 4 is a plan view of the transformer.

FIG. 5 is a bottom perspective view of the transformer.

FIG. 6 is a cross-sectional plan view of a conventional transformer.

FIG. 7 is a bottom view of the transformer.

FIG. 8 is a perspective view of the transformer.

FIG. 9 is a plan view of the transformer.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Terminal 2 1st through-hole 3 Terminal block 4 2nd through-hole 5 Winding frame 6 1st winding 7 2nd winding 8 Middle leg 9 Magnetic core 10 Connection part 11 Mounting part 12 Hole part 13 Winding start Part 14 End of winding part 15 Outermost diameter part 16 Protrusion part 17 Tip part 18 Tapered part 19 Magnetic core concave part 20 Terminal base part 21 End face wall 22 Protruded end face wall 23 Fitting concave part

────────────────────────────────────────────────── ─── Continuation of front page (56) References JP-A-6-112058 (JP, A) JP-A-9-293621 (JP, A) JP-A 10-321443 (JP, A) (58) Field (Int.Cl. ⁷ , DB name) H01F 27/29 H01F 27/28

Claims (5)

(57) [Claims] 1. A terminal block having a plurality of terminals implanted therein and having a first through hole, a bobbin disposed on the terminal block and having a second through hole, and the bobbin And a first winding connected to the terminal, a second winding wound outside the first winding and connected to the terminal, and the first through-hole. And a magnetic core inserted into the second through-hole, wherein the terminal has connection portions for connecting to the first and second windings protruding from opposite end surfaces of the terminal block. Is provided with a hole from both end faces toward the first through hole, and the hole has
Provide a tapered part where the part expands and adjust the depth
The first winding has a dimension up to the inside of the outermost diameter portion, and the second winding has a winding start portion connected to the connection portion, and a lower surface of the terminal block through the hole portion. , wound on the bobbin, transformer the winding end portion was connected to the connecting portion. 2. The transformer according to claim 1, wherein a projection is provided adjacent to the hole, and a second winding is routed between the projection and a tip of the hole. 3. A terminal block comprising: a mounting portion on which a bobbin is mounted;
On the lower surface of the mounting portion, the width is equal to or larger than the width of the first through hole.
A magnetic core recess for disposing the magnetic core, and the magnetic core recess
Terminals are implanted on both sides of the part so as to sandwich the magnetic core recess
Terminal base portions to be opposed to each other.
An end wall is provided on the end surface to be formed, and a hole is formed in the end wall.
The transformer according to claim 1, wherein 4. Only the end wall corresponding to the hole portion is first penetrated.
4. The transformer according to claim 3, wherein the projecting end wall is in contact with the hole . 5. A first through-hole only in the end wall corresponding to the hole.
A projecting end face wall which contacts the hole,
4. The transformer according to claim 3, wherein a fitting recess fitted to the wall is provided in the magnetic core .