JPS6220266A - Connector for insulated bus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to an insulated busbar connection device.

[Prior Art] As a conventional device of this type, one shown in FIG. 2 is known. In the figure, (1) is the insulated bus bar container, (2)
is an insulating spacer fixed at the flange of this container (1), (3) is a center conductor supported by this insulating spacer (2), and (4a) and (4b) are this center conductor (3) and a contact. (5a) and (5b), which are electrically connected to the center conductor (3) and the -1- conductor (4a).
), (4b) each has a convex connecting portion on both sides thereof. A required gap is provided between the adjacent and opposing connection ends of the center conductor (3) and the conductors (4a) and (4b), taking into consideration assembly errors and thermal expansion and contraction of each conductor. Contact (5a), (5
b) is for absorbing this thermal expansion and contraction of the conductors (4a), (4b) (7) and ensuring the connection between the conductors (4a), (ab) and the center conductor (3). In addition, (6) is an electric field mitigation shield for relaxing the electric field of the contacts (5a) and (5b), which is connected to the center conductor (3) and the conductor (4a).
, (4b) and each of these connection ends electrically! It is attached to the center conductor (3) so as to surround the contacts (5a) and (5b) which are connected to each other.

Note that the current path is formed in the order of conductor (4a), contact (5a), center conductor (3), contact (5b), and conductor (4b).

[Problems to be Solved by the Invention] Since the conventional device is configured as shown in the diagram, the number of parts increases because it has a structure in which connections are made via contacts on both sides of the central conductor, and its assembly is difficult. There was also a problem in terms of work efficiency as the process became complicated.

The present invention has been made in order to solve the problems mentioned in section 2 above, and aims to simplify assembly and reduce the number of parts by directly connecting a conductor to the center conductor supported by an insulating spacer. With the goal.

[Means for Solving the Problems] The insulated busbar connection device according to the present invention has a center conductor supported by an insulating spacer installed in a container, the center conductor being formed into a cylindrical shape having a center connection hole, Insert each end of the conductor on both sides adjacent to each connection hole,
Further, a contact element is provided in the connection hole for elastically holding the inner wall surface of the connection hole and the outer peripheral surface of the conductor end portion in contact with each other.

[Function] The insulated busbar connection device of the present invention can connect a cylindrical center conductor having a center connection hole supported by an insulating spacer by directly connecting a conductor to the connection hole.

[Example] An embodiment of the present invention will be described below with reference to the drawings.

In Figure 1, (+), (2), (4a),
(4b) is substantially the same as the conventional device described in 1. (3
] is a cylindrical center conductor supported by an insulating spacer (2), and the conductor (
Connection holes (4a) and (4b) into which the connection ends are inserted and connected (
3a) is provided. In other words, the conductors (4a), (4
b) is supported by the insulating spacer (2) by inserting its connecting end into the connecting hole of the center conductor (3).

(5a) and (5b) are contacts provided on the inner wall surface of the connection hole of the center conductor (3), as shown in Figure 1b. The above center conductor (
3), the inner wall surface of the connection hole and the outer circumferential surfaces of the ends of the conductors (4a) and (4b) are elastically held in contact with each other.

Therefore, a current path is formed in the order of conductor (4a), contact (5a), center conductor (3), contact (5b), and conductor (4b).

Since the present invention is constructed as described above, the contactor (5a
), (5b) are located inside the center conductor (3), respectively, so that the conductors (4a), (4b) and the center conductor (3)
There is little disturbance in the electric field near the connection, and there is no need to provide a shield to alleviate the electric field.

In the above embodiment, spring contacts are used for the contacts (4a) and (4b), but the present invention is not limited to this; multi-contacts or other elastic contacts may also be used with the same effect.

Moreover, although the case of an insulated bus bar has been described in the above embodiment, the present invention is not limited to this, and a switchgear having a similar structure may be used.

[Effects of the Invention] As described above, according to the present invention, since the conductor can be inserted and connected directly to the center conductor, the number of parts can be reduced, manufacturing costs can be reduced, and assembly can be simplified. This has the effect of increasing efficiency and improving work efficiency.

[Brief explanation of the drawing]

FIGS. 1a and 1b are sectional views showing an insulated m-wire connection device according to an embodiment of the present invention, and FIG. 2 is a sectional view showing a conventional insulated busbar connection device. (1) is a container, (2) is an insulating spacer, (3) is a center conductor, (3a) is a connection hole, (4a) and (4b) are conductors, (
5a) and (5b) are contacts, and (6) is a shield for electric field relaxation. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims (1)

[Claims] The center conductor is supported by an insulating spacer installed inside the container,
This center conductor is formed into a cylindrical shape having a center connection hole, and each end of the conductor on both sides adjacent to each connection hole is fitted into each connection hole, and the inner wall surface of the connection hole and the conductor are inserted into each connection hole. 1. A connecting device for an insulated bus bar, characterized in that a contact element is provided to resiliently maintain contact with an outer circumferential surface of an end portion.