FI77337B - EN ISOLERSKIVA MELLAN LINDNING OCH KAERNPLAOTPACKE OCH DROSSEL ELLER TRANSFORMATOR FOERSEDD MED ISOLERSKIVAN. - Google Patents

Description

1 77337 Insulator plate between coil and core plate pack and choke or transformer with insulator plate. - It is insulated with lindning and core plates and chokes or a transformer with insulators.

The invention relates to an insulator plate between the winding of a choke or transformer and a core plate pack, which is intended to be placed between the inner surface of the end of the winding loop and the end of the core plate pack passing through the opening of the winding loop.

The invention also relates to a choke or transformer having the above-mentioned insulator plate and having a coil loop opening in the direction of the winding axis which is rectangular and in which the longer side runs of the coil are surrounded by separate surface insulators. One problem in the manufacture of chokes or transformers is the use of bonding tapes to secure the individual surface insulators surrounding the windings. The fixing of Si tapes is a work of craftsmanship, i.e. large-scale, monotonous, slow and expensive work that cannot be automated with reasonable arrangements. Another problem in the manufacture of chokes or transformers is the expansion of the winding as a result of the movement of the winding wires. This may make it difficult to install the coil in the core plate package if the coil windows are not dimensioned with sufficient tolerances.

The object of the invention is to eliminate the above-mentioned problems by using a specially constructed insulating plate between the coil and the core plate stack.

The characteristic features of an insulator plate according to the invention are set out in the appended claim 1. Claim 2 sets out the characteristics of a choke or transformer provided with an insulator plate according to the invention.

In the following, an embodiment of the invention will be described with reference to the accompanying drawing, in which Fig. 1 shows a top view of a choke winding, the ends of which 2 77337 have cross-section of insulator plates according to the invention.

Figure 2 shows the insulating board according to the invention in a side view, and Figure 3 shows a cross-section of the coil to which the insulating board of Figure 2 is inserted in the direction of arrow I.

Figure 1 shows a choke coil 2 which is rectangular when viewed in the direction of the winding axis. The choke core plate package (not shown) passes through the opening 5 of the winding loop and also enters the outer sides of the side runs 6 of the winding. In order to insulate the coil 2 from the core plate package, its longer side runs 6 are surrounded by separate surface insulators 3. An insulator plate 11 is inserted between the inner surface 4 of the coil end 7 and the end of the core plate pack passing through the opening 5.

The insulating plate 11 is connected via hinge parts 13 to outer arm branches 12, the free ends of which have gripping members 15 which can be made to grip the counter-gripping members 14 at the respective end of the insulating plate 11. Alternatively, the gripping members 15 or parts 12a can be made so long that the gripping members 15 engage. In this case, however, the outer side branches 12 have to be bent more laterally in order to install the insulating plate, which is indicated in its entirety by reference numeral 1, around the winding 2. This is preferably done immediately after winding the winding when the surface insulators 3 are in place. In this case, the insulating plate 11 with its outer side branches 12 prevents the winding of the winding and at the same time also fastens the surface insulators 3 on the winding. The distance between the insulating plate 11 and the outer side branches 12 is dimensioned for this purpose when the gripping members 14 and 15 are in engagement with each other.

The second outer side branch 12 can be provided with terminal pins of the winding wire or with a receiving groove in the terminal strip, whereby the fastening of the outlets of the 3 77337 winding wire can be solved at the same time.

Claims (3)

77337 An insulator plate (11) between a winding of a choke or transformer and a core plate stack, which is intended to be placed between the inner surface (4) of the end of the winding loop (2) and the end of the core plate stack passing through the winding loop opening (5). via hinge portions (13), outer side branches (12) having gripping members at their free ends which can be made to grip either each other or preferably the mating gripping members (14) at the respective end of the insulating plate (11), the outer branch branches (12) being turned to the gripping members (14, 15) are in contact with each other, the receiving openings of the winding (2) are formed between the edges of the insulating plate (11) and the outer side branches (12). Choke or transformer with an insulator plate (1) according to claim 1, wherein the winding loop opening (5) of the winding (2) is rectangular in the direction of the winding axis and in which the longer side runs (6) of the winding are surrounded by separate surface insulators (3) that the insulating plate (11) with its outer side branches (12) surrounds the end portions of the surface insulators (3). Choke or transformer according to Claim 2, characterized in that the second outer side edge (12) of the insulator plate (1) has terminal pins or a groove for receiving the terminal strip.