JPS5833912A - Method of mounting synthetic resin wire tube on connector, coupling - 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] Hard vinyl conduit, plastic conduit with prongs (
Synthetic resin electrical conduits such as electrical conduits (with vinyl protective coating) are used, but the present invention provides a method for connecting these synthetic resin electrical conduits and joint boxes, and for connecting the electrical conduits to each other.
This relates to improvements in connection methods via connectors and couplings. 1 FIGS. 1 and 2 are explanatory drawings of a conventionally used method of connecting a synthetic resin conduit and a G-IND box.

In FIG. 1, 1 is a hard vinyl conduit, and 2 is a joint box. 3 is a connector, and the connector 3 has a hole 4 at one end into which the electric conduit 1 is inserted and fixed, and a hole 6 at the other end into which the stator 5 is screwed, and the holes 4 and 6 are connected. I'm passing through. Further, the stator 5 has a hole 7 at its center and a flange 8 around the hole 7. The outer surface of the cylindrical portion is threaded and dimensioned to threadably engage the hole 6.

First, apply adhesive to the outer surface of the end of conduit 1,
Insert into hole 4 of connector 3 and secure.

On the other hand, the stator 5 is inserted into the hole provided in the joint box 2.
When the outer surface of the stator 5 and the hole 6 of the connector 3 are screwed together, the connector 8 with conduit tube is connected to the joint box 2 by the 7 langes 8 and the end of the connector 3.
Fixed.

FIG. 2 is an explanatory diagram of a method for fixing the corrugated plastic (with vinyl protective coating) electric conduit 9 to the joint box 2. The fixing method is the same as that described with reference to FIG.

FIG. 8 is an explanatory diagram of a method of connecting, for example, the hard vinyl electric conduit tubes 1 and 1' via a coupling lO. Apply adhesive to the outer surfaces of the ends of the electrical conduits l, 1', and insert the electrical conduits 1.1' into the insertion holes of the coupling lO from both ends.
Insert and secure.

As can be understood from the above explanation, the conduit is inserted and fixed by applying adhesive to the hole of the connector or coupling, so the outer diameter of the conduit and the hole diameter of the connector or coupling must be If there is too much difference, it is impossible to establish a strong connection. Normally, this difference is considered to be approximately 0.5 to 0.8 ff, which is appropriate when the outer diameter of the conduit is small.

In this way, the size (inner diameter) of connectors and couplings is determined by the size (outer diameter) of the conduit, but in reality, there is a shortage of connectors and couplings that fit exactly, and in an emergency, dog-sized connectors, When do you need to use a coupling, or do you have a conduit of any diameter due to power distribution capacity? When manufacturing and commercially available connectors are manufactured, in many cases there is a significant difference between the outside diameter of the conduit and the inside diameter of the connector or coupling, making it impossible to securely install it with adhesive. However, the present invention relates to a mounting method that can be applied to such cases, and in particular, by using a synthetic resin adapter, a strong mounting has been achieved.

The implementation of the present invention will be described below with reference to explanatory diagrams shown in FIGS. 4 and 5.

FIG. 4 is an explanatory diagram of attaching the conduit to the connector.

For example, the outer diameter of the hard vinyl conduit l and the hole 4 of the connector 2
Since there is a large difference in the inner diameter of the conduit 1, first fix the adapter 11 to the outer surface of the end of the conduit 1 with adhesive or the like, apply adhesive to the outer surface of the adapter 11, and connect the connector 2. Insert it into hole 4 and secure it.

The material of the adapter 11 is synthetic resin, and its shape may be a sheet-shaped one wrapped around it, a circular one, or a cylindrical half-shaped one.

FIG. 5 is an explanatory diagram of a method for connecting, for example, the hard vinyl electric conduits 1 and 1' via a coupling lO. Since there is a large difference in the inner diameter of the conduit tubes 1, 1' and the coupling 10, nine adapters 11, 11' are prepared separately.
i. Fix to the outer surface of the end of the electric conduit 1.1', apply adhesive to the adapters If, I+', insert into the holes at both ends of the coupling IO, and fix. adapter 11
．． There is a distance of 0.5 to 0.8f between the outer diameter of 11' and the inner diameter of the hole.
It is desirable that there is a difference in f.

As explained above, the present invention is applied when there is a large difference between the outer diameter of the conduit and the inner diameter of the connector or coupling, but as a practical matter, depending on the power distribution capacity, the number of power distribution lines, etc. The outer diameter of the conduit is often determined. In this case, it is relatively easy to manufacture conduit tubes of any diameter, and it seems that there are various diameters on the market, but commercially available connectors and couplings are There are limitations, and it goes without saying that it is more economical to use an adapter to meet these limitations, so the present invention can be said to be a very practical method.

[Brief explanation of drawings]

Figures 1 and 2 are explanatory diagrams of a conventionally used method of fixing to a synthetic resin conduit joint box, and Figure 3 similarly shows a method of connecting conduit tubes to each other via a coupling. It is an explanatory diagram of a method. FIG. 4 is an explanatory diagram of one embodiment of the present invention, and FIG. 5 is an explanatory diagram of another embodiment. 1.1'...Hard vinyl conduit, 2...Joint box, 8...-y nectar, 4...Connector conduit insertion hole, 5...Stator, 8... 7 lunges,
9...Corrugated plastic (with vinyl protective covering) conduit, lO...force/knob ring, 11.11'...adapter. -Yoshi 1 figure 2 figure 7r3 concave piece 4 figure 75 figure

Claims (1)

[Claims] (1) A synthetic resin conduit characterized in that a synthetic resin adapter is fixed to a synthetic resin conduit with an adhesive, and the conduit with an azobutter is attached to a connector or coupling with an adhesive. How to attach to connectors and couplings.