JPS598337Y2 - transformer - Google Patents

Description

[Detailed description of the invention] This invention allows a large number of lead wires drawn out from the coil to be easily drawn out while maintaining insulation from other parts, making it easy to connect with external equipment, and furthermore, making manufacturing and inspection easier. This relates to a transformer.

When a large number of lead wires are drawn out from one transformer to meet various uses, it is difficult to maintain insulation between the lead wires or between them and the core and coil.

In recent years, there has been a tendency to require a large number of lead wires to be drawn out from one transformer, and the present invention is extremely useful in such cases.

In addition, according to the present invention, there is no need to connect a specially insulated lead wire to the end of the coil lead-out, and manufacturing is easy.Furthermore, even when inspecting a finished product, the inspection equipment and lead wire can be connected one by one. There is no need to make any connections, and it is sufficient to simply set the terminals in place on the inspection device.

An embodiment of the present invention will be described in detail below with reference to the drawings.

In the embodiment, the transformer main body a is constructed by winding primary, secondary, etc. coils 2 around a winding frame 1, and further setting a core 3.

The winding frame 1 has collars 4 arranged above and below, and an upright wall 23 is provided on the upper surface of the upper collar 4 at an appropriate distance from the core 3, and the lead wire of the coil 2 is drawn out from the outside thereof. An appropriate number of extraction grooves 5 are provided.

However, there are an appropriate number of lead-out grooves 5 for pulling out the coil 2 lead wires.
Alternatively, both ends of the collar 4 may be left and the space between them may be cut out.

Next, the insulating plate 7 is prepared.

As shown in FIGS. 2, 3, 5 to 7, the insulating plate 7 is arranged in a roughly horizontal block shape, with the upper vertical part serving as a mounting piece 8, and both ends of the mounting piece 8. A mounting hole 9 is provided in the mounting hole 9 .

Furthermore, an appropriate number of notches 12 with through holes 10 provided at the base are provided in the horizontal part of the insulating plate 7 to face the lead-out grooves 5 for the lead wires of the coil 2. A thick terminal mounting portion 11 is constructed.

Next, a through hole is drilled in the rear surface from the tip end of the terminal attaching portion 11, a terminal 13 of an appropriate length is press-fitted into the through hole, and the rear protrusion 13' is made to stand up by an appropriate method.

In the case of the embodiment shown in the drawings, projecting walls 14 are formed on both sides of the top end of the terminal mounting portion 11, respectively.

Further, the insulating plate 7 is installed by providing cylindrical portions 15 behind the mounting holes 9 at both ends of the mounting piece 8.
As shown in the second figure, a through hole 16 is provided on the side, which has a larger diameter than the mounting 7L9 and into which the cylindrical portion 15 fits, so that when the bolt 17 is inserted, the bolt 17 does not come into contact with the core 3. It is structured as follows.

Furthermore, in the case of the embodiment, in order to facilitate attachment with the bolts 17, the insertion portion 1 of the nut 18 is attached to one insulating plate 7.
9 is provided, and a nut 18 is previously inserted into the insertion portion, and the bolt 17 is automatically screwed into the nut 18 through which the bolt 17 is inserted from the insulating plate 7' on the opposite side, so that the insulating plates 7, 7' At the same time, the core 3 is tightened.

In the figure, reference numeral 20 denotes a mounting leg of the transformer, which is attached to the lower end of the core 3 with bolts 21 and nuts 22, although details are not shown.

Although the drawing embodiment shows the core 3 in the vertical direction, it may be of a type in which the core 3 is in the horizontal direction.

In that case, insulating plates 7, 7' are provided upright on the upper surface of the core at the left and right positions of the coil.

In the figure, 24 is a partition wall provided between the notches 5.

In the present invention having the above structure, the lead wire b of the coil 2 is pulled out from the pull-out groove 5 of the collar 4, as shown in FIGS. It is pulled out from the through hole 10.

That is, for example, the lead wire b of the inner coil passes through the lead-out groove 5 of the collar 4 from its lead-out point, and then passes through the lead-out groove 5 of the collar 4, and then passes through the lead-out groove 5 of the collar 4.
The lead wire b of the outer coil is pulled out from the through hole 10 or notch 12 of the insulating plate 7, 7', and the lead wire b of the outer coil passes through the lead-out groove 5 of the collar 4 from the lead-out point, and is further pulled out from the notch 12 of the insulating plates 7, 7'.

That is, the lead wire b of the coil 2 can be pulled out vertically from the lead wire b of the coil 2 using the pull-out groove 5 of the collar 4 and the through holes 10 or notches 12 of the insulating plates 7 and 7'. It is.

Then, the drawn out coil 2 and lead wire b are connected to an insulating plate 7,
The terminal 1 is inserted through the upper surface of the terminal mounting portion 11 configured at 7'.
The connection can be made by wrapping it around the rear protrusion 13' of the terminal attachment part 11 of No. 3.

Further, if necessary, the rear protrusion 13' of the terminal mounting portion 11 of the terminal 13 and the entwined portion of the lead wire b of the coil 2 may be placed together by dipping or the like in wax to achieve a complete connection.

In the above structure, the terminal 13 is used for collective connection with other external devices, but the pull-out groove 5 of the collar 4 and the insulating plate 7
The lead wire b of the coil 2 pulled out from the through hole 10 or cut 12 of
It is also possible to completely connect the terminal 13 by wrapping the terminal 13 through the terminal 13, and use the rear protrusion 13' of the terminal attachment part 11 of the terminal 13 for connection to other equipment.

In the present invention, as shown in the second figure, the vertical lower parts of the insulating plates 7, 7' are inserted between the upright walls 23 of the winding frame 1 of the core 3, and the mounting pieces 8 of the insulating plates 7, 7' are connected to the bolts 17 and It is attached to the core 3 by a nut 18.

As a result, the standing wall 23 ensures a sufficient creepage distance between the core 3 and the lead wire b of the coil 2.

In other words, no matter how closely the upper surface of the collar 4 of the winding frame 1 and the mounting pieces 8 of the insulating plates 7, 7' are brought into contact, it is a bond between foreign substances, and there may be a gap. Although it is not recognized that the distance is secured, in the present invention, the standing wall 23 is integrally provided on the tsuba 4 with the same material, so the creepage distance between the core 3 and the lead wire b of the coil 2 in the present invention is equal to the tsuba 4. The upper surface of the core 3 side, the inner surface of the upright wall 23, the upper surface thereof, the outer surface thereof, and the upper surface of the collar 4 outside the upright wall 23 to the notch 5 section.

As mentioned above, the present invention allows a large number of lead wires drawn out from the coil to stand up vertically, allowing them to be easily pulled out and connected to terminals without contacting the core or other lead wires. There is no need to connect a lead wire or the like with a special insulation coating to the wire, and it can be set in an external device or an inspection device, and furthermore, it has the effect of being extremely easy to manufacture.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; FIG. 1 is a perspective view thereof, FIG. 2 is a partially cutaway side view thereof, and FIG. 3 is an exploded view.
Fig. 4 is a perspective view of the insulating plate, Fig. 5 is a sectional view taken along the line A-A in Fig. 4, Fig. 6 is a sectional view taken along the line B-B in Fig. 4, and Fig. 7 is a sectional view taken along the line C in Fig. 4.
-C line sectional view. 2... Coil, 3... Core, 4...
...Brim, 5...Drawer groove, 7,7'...
...Insulating plate, 8...Mounting piece, 10...
Through hole, 11...Terminal mounting part, 12...
Notch, 13...terminal, 13'...rear protrusion, 23...standing wall, b...coil lead wire.

Claims (1)

[Scope of utility model registration request] An upstanding wall is provided on the upper surface of the flange of the winding at an appropriate distance from the core, and a groove for leading out the coil lead wire is provided at an appropriate interval on the flange on the outside of the upstanding wall. A vertical part of an insulating board shaped like a yokocho is inserted between the walls, and its upper mounting piece is attached to the core, and an appropriate number of notches with through holes at the base are provided in the horizontal part of the insulating board to attach the coil to the coil. A thick terminal mounting portion is provided at the tip between the notches, and an enlarged rear protrusion of the terminal stands up from the tip surface of the terminal mounting portion. made to do,
A transformer characterized in that a lead wire of the coil is drawn out from a lead wire drawing groove and a through hole or notch of the coil and connected to the terminal.