JPS6016046Y2 - Branch for electrical wiring - Google Patents

Description

[Detailed explanation of the idea] Background and purpose Indoor wiring usually involves laying indoor cables between the main lines and the locations where outlets, switches, lights, etc. are planned to be installed indoors, and then connecting them to each other. Take the method of doing so.

The connection method is, as is well known, by stripping off the cable sheaths and insulators from both sides to expose the cable conductors, inserting them into a connecting sleeve selected to fit the cable conductors, and crimping them with a crimping tool. The connection is then covered with insulating tape or an insulating cap to protect it electrically and mechanically.

A series of these connection operations takes up a large portion of the wiring work in terms of time.

Moreover, the work is carried out in narrow and difficult to work spaces such as attics.

By the way, in facilities such as apartments and hotels that have a repeating pattern of the same floor plan, the internal wiring also repeats the same pattern.

This idea focuses on this point, and in advance, a large number of electrical wiring branch bodies with the same pattern are made in a factory, in which predetermined branch cables are connected to the main cable, which makes the work difficult and difficult to do. This also eliminates the need for time-consuming on-site connections.

Example The case of single-phase two-wire system will be described.

``10 in Fig. 1j indicates the entire connecting hardware.

It is made by bending a rectangular copper plate into a U-shape and providing it with a large number of insertion grooves 12 extending from the open side 14 toward the bottom 16 at appropriate intervals.

As shown in "Fig. 2", connect this connecting hardware 10 at least twice.
Prepare one (indicated by IOA and IOB).

Then, the cable conductors 26 of one trunk cable 20 and a large number of branch cables 200 are respectively inserted into the insertion grooves 12, bathed in a flux liquid and immersed in a molten solder tank to fix the soldering. .

At this time, the conductor 26A of one phase is connected to the connecting hardware 10A.
The conductors 26B of the other phase are respectively connected to the connecting hardware 10B side.

Note that 22 is a sheath and 24 is an insulator, which are color-coded into white and black, so the phase classification can be done according to that color.

An insulating spacer 40 is inserted between the connection hardware 10A and IOB to maintain an insulating distance.

Then, as shown in FIGS. 3 and 4, an insulator 50 is molded around them, for example, by casting.

Note that the length and conductor cross-sectional area of the trunk cable 20 and each branch cable 200 are set to predetermined values determined by the connection diagram.

How to use At the stage before interior construction work, attach a molded part of the insulator 50 to the center of the wiring in the room where the wiring is to be installed.

Then, each branch cable 200 is spread out and led to a predetermined outlet, light, switch, etc.

Further, the trunk cable 20 is connected to a distribution board or the like.

This completes the wiring. Effects of the invention (1) One main cable 2G with a predetermined length and a predetermined conductor cross-sectional area determined based on the wiring design drawing.
, and a predetermined number of branch cables 200, each having a predetermined length and a predetermined conductor cross-sectional area, can be manufactured in advance at a factory and installed on site as described above. This greatly simplifies wiring work and greatly increases efficiency.

(2) Since the connecting hardware 10 is made by bending a rectangular copper plate into a U-shape and providing a large number of insertion grooves 12 from the opening side 14 to the bottom 16, it can be dipped into a solder bath to form a conductor all at once. Can be connected.

Furthermore, since the branch cables 200 can be pulled out in a horizontal line (not bundled), it is easy to identify which branch circuit is connected.

(3) Trunk cable 20 and branch cable 200
Since the cable conductors 26 of the same phase are respectively connected to the connecting hardware 10 on the same side, there is no mistake even when wiring a branch circuit where polarity must be distinguished.

(4) Since the insulator 50 is molded around the connection hardware 10, the insulating spacer 40, and each cable end, safety with respect to electrical leakage etc. is improved.

[Brief explanation of drawings]

The drawings relate to an embodiment of this invention, and FIG. 1 is a perspective view of the connecting hardware 10, FIG. 2 is an explanatory diagram of the connection state between the connecting hardware 10 and the cable conductor 26, and FIG. 3 is an overall perspective view.
FIG. 4 is an enlarged sectional view taken along IV-IV in FIG. 3. 10... Connection hardware, 12... Insertion groove, 20... Trunk cable, 200...
Branch cable, 26... Cable conductor, 40.
...Insulating spacer, 50...Insulator.

Claims (1)

[Claims for Utility Model Registration] At least two connecting metal fittings 10 are formed by bending a rectangular copper plate into a U-shape and providing a large number of insertion grooves 12 extending from the opening side 14 toward the bottom 16, with an insulating spacer 40 between them. One trunk cable 20 having a predetermined length and a predetermined conductor cross-sectional area, which are arranged in parallel and determined based on a wiring design drawing, and predetermined cables each having a predetermined length and a predetermined conductor cross-sectional area. Cable conductors 26 of the same phase of branch cables 200 of the number
are inserted into each insertion groove 12 of the connecting hardware 10 on the same side and soldered thereto, and an insulator 50 is molded around the connecting hardware 10, the insulating spacer 40 and each cable end. A branch body for electrical wiring for extension work, which is characterized by: