JPH0129976Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a coil conductor connecting device, for example, a coil conductor connecting device that connects the lead of a sheet-wound coil of a transformer to an external wiring bus bar.

Sheet-wound coils for transformers, etc. are made of sheet copper,
It is made of aluminum or the like wound into a coil. A sheet-wound coil configured in this way is generally used as a large-current coil, so a plate-shaped lead at the end of the coil is used to lead out from the sheet-wound coil, and it is also used for connection and external wiring. Bus bars are used as conductors.

FIG. 1 is a plan view showing a conventional coil conductor connecting device, and FIG. 2 is a side view of FIG. 1. In FIGS. 1 and 2, each of the coil conductors 1a to 1c is formed by winding a sheet of copper, aluminum, etc. into a coil shape. Access leads 2a, 3a
2c and 3c are coil conductors 1a to 1c with both ends led out to the outside. Iron core 4a~
Reference numeral 4c is inserted into the hollow portion of the coil conductors 1a to 1c, and is formed of, for example, a laminated iron core. The iron core clamps 5 are used to tighten the iron cores 4a to 4c from both sides of the iron cores 4a to 4c. External wiring bus bars 6a to 6c are coil conductors 1a to 1c.
It is connected to The busbar fixing insulator 7 insulates and supports the external wiring busbars 6a to 6c, and is attached to the core clamp 5 via the mounting bracket 8.
installed on. Three-phase connection busbar 9a,
10a to 9c, 10c are lead leads 2a, 3a
2c and 3c are connected to external wiring bus bars 6a to 6c, and the coil conductors 1a to 1c are connected in a three-phase triangular manner. Connection conductors 11a to 11c are three-phase connection bus bars 9a to 9c and lead leads 2a to
2c. The bolts 12 and 13 are connected to the lead leads 2a, 3a to 2c, 3.
c and three-phase connection busbars 9a, 10a to 9c, 1
0c and external wiring bus bars 6a to 6c and three-phase connection bus bars 9a, 10a to 9c, and 10c are tightened and connected.

The conventional device is constructed as described above, and includes lead leads 2a, 3a to 2c, 3c, external wiring busbars 6a to 6c, and three-phase connection busbars 9a, 10a.
~9c, 10c and the connecting conductors 11a to 11c are
Since they are copper or aluminum busbars, they have no flexibility at all. Therefore, when the three-phase connection busbars 9a, 10a to 9c, 10c are used for connection, the following drawbacks occur. (b) Figure 3a,
As shown in b, if there is an error in the dimensions X and Y of the lead leads 2a and 3a, installation becomes impossible. (B)
As shown in FIG. 4a and b, the lead leads 2a and 3
If a is shifted in the circumferential direction, it will not be possible to install.

Therefore, if the above-mentioned problem occurs, if the bolts 12 and 13 are forcibly tightened, each part will be deformed and the bus bar fixing insulator 7 may be damaged, and the coils of the lead leads 2a, 3a to 2c, 3c may be damaged. conductor 1
There was a drawback that the insulators at the openings from a to 1c were damaged, leading to, for example, a transformer accident. In addition, large three-phase connection bus bars 9a, 10a to 9c, 1
If you are using 0c, etc., or if the error is large, adjust the three-phase connection busbar 9 according to the actual product.
There were drawbacks such as having to remake parts a, 10a to 9c, and 10c.

This invention was made in order to eliminate the drawbacks of the conventional ones as described above, and the lead leads 2a, 3a to 2c, 3c and the three-phase connection bus bar 9.
A, 10a to 9c, 10c are provided with an error absorbing adapter between them to provide a coil conductor connecting device that allows installation adjustment.

FIG. 5 is a plan view showing an embodiment of the coil conductor connecting device according to this invention, FIG. 6 is a side view of FIG. 5, and FIGS. 7 a to 7 c are the adapters shown in FIGS. 5 and 6, respectively. FIG. In each figure, the same parts as in FIGS. 1 and 2 are designated by the same reference numerals. In FIGS. 5 to 7, adapters 14a, 15a to 14c, and 15c connect lead leads 2a to 2c via connection conductors 11a to 11c.
and three-phase connection busbars 9a to 9c, leads 3a to 3c and three-phase connection busbars 10a to 10.
and c are adjustable by bolts 16, and each has a through hole 141 with a diameter larger than the diameter of the bolt 16, or a seventh hole, as shown in FIG. It has an oval through hole 142 as shown in FIG. 7B or a long hole 143 as shown in FIG. 7C.

That is, by providing a through hole 141 with a diameter larger than the diameter of the bolt 16, an oval through hole 142, or an elongated hole 143,
Errors in the dimensions X and Y of the lead leads 2a and 3a shown in FIG. 4 or the lead leads 2a and 2a shown in FIGS.
3a in the circumferential direction can be absorbed.

In addition, in the above embodiment, the connection conductors 11a to 11c
Although a case is shown in which the outlet leads 2a to 2c and the three-phase connection busbars 9a to 9c are adjustable via adapters 14a to 14c, the outlet leads 2a to 2c are attached directly to the outlet leads 2 without providing the connection conductors 11a to 11c.
a to 2c and three-phase connection busbars 9a to 9c may be adjustable by adapters 14a to 14c. Also, connection conductors 11a to 11c, or lead leads 2a to 2c, and lead leads 3a to 3, into which bolts 12, 13, and 16 are inserted, respectively.
c, three-phase connection busbars 9a, 10a to 9c, 1
0c through-hole with adapters 14a and 15a, respectively.
If the oval through holes 142 or elongated holes 143 of ~14c and 15c are formed as circular through holes or elongated holes that intersect with each other, more errors can be absorbed. Furthermore, in the above embodiment, three-phase connection bus bars 9a to 9c, 10a to
Although the case of three-phase connection using 10c is shown, it is not limited to three-phase connection.

As described above, according to this invention, the outlet lead and the connection bus bar are connected by an adapter in which the through hole for bolt insertion is larger than the diameter of the bolt, has an oval shape, or is bored into a long hole. This makes it possible to absorb errors in the lead lead dimensions, lead-out positions, etc., prevent deformation of the bus bar, damage to component parts, and insulation accidents at the coil lead part, and eliminate the need to rebuild the bus bar for wiring. It has various effects.

[Brief explanation of the drawing]

Figure 1 is a plan view showing a conventional coil conductor connecting device, Figure 2 is a side view of Figure 1, Figures 3 and 4.
The figures are explanatory diagrams of the drawbacks of the conventional device, respectively. Figures 3a and 4a are plan views of the lead-out lead section, and Figures 3b and 4b are side views of Figures 3a and 4a. 5 is a plan view showing an embodiment of the coil conductor connecting device according to this invention, FIG. 6 is a side view of FIG. 5, and FIGS. 7 a to 7 are respectively shown in FIGS. 5 and 6. FIG. 3 is a detailed perspective view of the adapter shown in FIG. In the figure, 1a to 1c are coil conductors, 2a to 1c are coil conductors, and 2a to 1c are coil conductors.
2c, 3a-3c are lead leads, 4a-4c are iron cores, 5 is iron core clamps, 6a-6c are busbars for external wiring, 7 is insulators for fixing busbars, 8 is mounting brackets, 9a-9c, 10a- 10c is a bus bar for three-phase connection, 11a to 11c are connection conductors, 12,1
3 is a bolt, 14a to 14c, 15a to 15c are adapters, 141 is a through hole, 142 is an oval through hole, 143 is a long hole, and 16 is a bolt. Note that the same reference numerals in each figure indicate the same parts.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A coil conductor made of a sheet-like conductor, a connection busbar that connects an output lead of the coil conductor to an external wiring busbar, an adapter connected between the output lead and the connection busbar, and A bolt is provided for directly or indirectly connecting the adapter and the outlet lead, and the adapter and the connection bus bar, respectively, and the bolt loosely fits into a through hole for inserting the bolt provided at both ends of the adapter. The coil conductor connecting device is configured such that the output lead and the connection bus bar are connected in an adjustable manner. 2. A utility model registration in which the outlet lead and the connection bus bar are each provided with a through hole for inserting a bolt, and the through hole provided in the outlet lead and the connection bus bar is bored so that the bolt is loosely fitted therein. A coil conductor connecting device according to claim 1. 3. The coil conductor connecting device according to claim 1 or 2, wherein the through hole of the adapter is formed to have a diameter larger than the diameter of the bolt. 4. The coil conductor connecting device according to claim 1 or 2, wherein the through hole of the adapter is formed in an oval shape larger than the diameter of the bolt. 5. The coil conductor connecting device according to claim 1 or 2, wherein the through hole of the adapter is formed as a long hole larger than the diameter of the bolt. 6. The coil conductor connecting device according to any one of claims 1 to 5, wherein the through holes of the lead lead and the connection bus bar are each formed to have a diameter larger than the diameter of the bolt. 7. The coil conductor connecting device according to any one of claims 1 to 5 of the utility model registration claim, wherein the lead-out lead and the through-hole of the connection bus bar are each formed into an oval shape larger than the diameter of the bolt. . 8. The coil conductor connection device according to any one of claims 1 to 5 of the utility model registration claims, wherein the through holes of the lead leads and the connection bus bar are each formed into elongated holes larger than the diameter of the bolt. . 9 The oval or elongated through hole of the adapter,
The coil conductor connecting device according to claim 2, wherein the output leads and the oval or elongated through holes of the connection bus bar are provided so as to intersect with each other.