JPS6173508A - Wire tube joint - 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 The present invention relates to a simple and inexpensive joint for corrugated conduit that can connect corrugated conduit by pressing twice, for example, at two locations on both ends, at 80,3 locations, or at four locations on both ends. It is provided with a plurality of joint parts, such as four joint parts, and at least one of the joint parts is a flexible corrugated electric conduit joint part.

For tightening, the flexible corrugated electric conduit joint part has a joint body with a male screw threaded on the outer periphery and a wedge-shaped taper that engages with the corrugated part of the corrugated wire pipe inserted into the joint body. The present invention relates to a conduit joint characterized by being of 14N construction with a nut attached.

Conventionally, a corrugated t-shirt characterized by providing such a claw part
'F, or a flexible conduit joint such as a composite pipe with a smooth surface by coating a soft synthetic resin on the corrugated conduit, after inserting the corrugated conduit into the joint body, In many cases, the conduit was tightened using four tightening rings, or the conduit was rotated and inserted using a fitting with claws inside the joint body. Therefore, these methods require a considerable amount of effort to attach the conduit to the joint.

In the present invention, after the flexible corrugated conduit 2 is pushed into the corrugated conduit joint body 4, it is tightened from the outside of the joint body 4 with the tightening nut part 6. The attaching nut part 6 can be loosely attached to the cylindrical wide opening part a end, and when pushing the corrugated conduit 2, the corrugated conduit 2
The claw portion 5 moves by friction on the outer peripheral surface of the corrugated electric conduit, and gets stuck in the trough of the corrugated electric conduit, and can no longer be removed. Next, by tightening the drilling nut part 6, the claw part 5 is firmly bitten into the corrugated part of the electric conduit 2 and fixed.

It is therefore necessary that the pawl 5 be somewhat elastic, and therefore the tightening nut 6 is usually made of plastic, preferably industrial plastic or hard rubber. However, it is not necessarily limited to these.

Further, as the corrugated electric conduit 2 applied to the present invention, a corrugated electric conduit with a surface spiral waveform is most suitable, but it is also applicable to a corrugated electric conduit with a circular arc independent waveform.

In other words, as shown in the drawings, the present invention includes a plurality of joint parts 1, for example, two places on both ends, 80,88 places, or 40,044 places, and at least one of the dream joint parts is made of flexible waveforms. In a conduit joint that is a conduit joint, the flexible corrugated 1! Each of the wire tube joints 1 includes a joint body 4 in which a male screw is screwed onto the outer periphery of the edge of a cylindrical wide-mouth opening 3 into which the end of the desired corrugated electric conduit 2 to be connected is introduced and connected, and the joint body 4. A corrugated i! is screwed onto the outer edge of the cylindrical wide-mouth opening 3 of 4. It consists of a tightening nut 6 in which a wedge-shaped tapered claw part 5 that engages with the corrugated part of the conduit projects inwardly. This is a joint having a threaded portion 7 that is connected together.

Note that the wedge-shaped claw portion 5 in the corrugated conduit joint portion of the joint of the present invention is provided on the conduit insertion side of the tightening nut portion 6,
They are made to protrude obliquely from the insertion side to the opposite side of the insertion side with a desired taper and height, and the number thereof is preferably about 4 to 8.

Hereinafter, the present invention will be explained in more detail with reference to Examples and drawings.

The embodiment shown in FIG. 1 is a conduit joint that has flexible corrugated i-line tube joints at two locations on both left and right ends, and FIG. This joint part is shown. Further, FIG. 8 shows a case in which one of the joints is a threaded part 7 for connection to a wiring box or the like.

Figure 4 shows an eight-pronged i! with flexible corrugated conduit joints at 3fg on three sides. FIG. 5 shows a joint for electrical conduit, one of which has a threaded joint 7.

Figure 6 shows a flexible conduit joint with 40,000 cross-shaped flexible corrugated conduit joints, one of which has a threaded joint 7. is shown in FIG. 7, and FIG. 8 shows that the two joints have become screwed parts.

In all of these cases, the cylindrical wide opening 3 of the flexible corrugated conduit joint body 4 has a larger inner diameter on the opening a side and a larger inner diameter on the inner diameter side, as shown in FIGS. 1 and 2. A male thread is cut on the diagonal periphery of the opening a side so that a conduit tightening nut portion 6 to be screwed therein can be screwed therein.

The conduit tightening nut part 6 is provided with a tapered claw part 5 as shown in FIG. 2 so as to bite into the corrugated part of the wire pipe 2, and the claw part 5 The claw portion 5 is provided obliquely protruding over the same circumference of the inner surface of the tightening nut portion 6 so that the tip thereof faces toward the inner part of the cylindrical wide opening portion 3. Therefore, when the corrugated I-line tube 2 is pushed into the wide opening 3 with the tightening nut part 6 loosely screwed into the threaded part on the wide opening 3, the corrugated I-line tube 2 is pushed into the wide opening 3. The claw portion 5 rubs against the outer circumferential surface of the attached 1a wire tube 2 and moves into the trough of the corrugated wire tube, and then the nut portion 6 is rotated and advanced to proceed with screwing. The claw portion 5 provided on the portion 6 digs deeply into the corrugated portion of the electric conduit 2 and is fixed (see FIG. 1).

As described above, the flexible single-wire pipe joint of the present invention does not require much effort for connection, is very simple and convenient, and is extremely useful industrially.

[Brief explanation of drawings]

FIG. 1 is a broken pressure surface view showing the connection state between a joint body and a tightening nut part and a flexible corrugated conduit according to an embodiment of the present invention, and FIG. FIG. 3 is a cutaway pressure surface view showing a joint portion of an embodiment of the present invention that has not been inserted, and FIG. FIG. 4 is a fracture pressure surface view showing a connection state with a flexible corrugated conduit according to still another embodiment of the present invention, and FIG. FIG. 6 is a fractured pressure surface view showing a connection state with a corrugated FT conduit, and FIG. The figure is a broken pressure surface view showing a connection state with a flexible 'wt wire tube according to still another embodiment of the present invention, and FIG. FIG. 1...Joint part 2...Flexible corrugated? 1! Wire tube 3... wide opening 4
...Joint body 5...Wedge-shaped tapered pawl portion 6...Tightening nut 7...Threaded portion Patent applicant Furukawa Electric Co., Ltd. Fig. 6 Fig. 7

Claims (1)

[Scope of Claims] 1. A conduit joint comprising a plurality of joint parts, at least one of which is a flexible corrugated conduit joint, comprising: a joint body in which a male screw is screwed onto the outer periphery of the edge of a cylindrical wide-mouth opening into which the end of the desired corrugated electric conduit to be connected is introduced and connected;
A desired number of wedge-shaped tapered claws protruding inward on the outer edge of the cylindrical wide-mouthed opening of the joint body to engage with the corrugated portion of the corrugated conduit to be screwed into the joint body. A fitting for electric conduit, characterized by comprising a nut for the electric conduit. 2. Claim 1, characterized in that the joint portion other than the corrugated conduit joint portion is a joint having a threaded portion that is threadedly connected to another joint portion such as a wiring box. Fittings for electrical conduit as described. 3. The electric conduit joint according to claim 1, wherein all of the joint parts are corrugated electric conduit joint parts. 4. The wedge-shaped claw part of the tightening nut used in the corrugated conduit joint is provided on the conduit insertion side of the tightening nut part, and is tapered from the insertion side to the insertion side with a desired taper and height. 3. The electrical conduit joint according to claim 1, wherein the electrical conduit joint projects obliquely to the opposite side.