JPH0112498Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention provides a connector for connecting a flexible conduit tube, which allows the flexible conduit tube to be detachably attached to an electric wire/cable connection box by a simple operation.

In recent years, when laying electric wires and cables in buildings and other structures, it has become customary to connect the electric wires and cables with a synthetic resin insulation box called a wire and cable connection box. It is widely used to protect the wires and cables that connect between each wire and cable connection box by passing them through a flexible wire and cable protection tube made of synthetic resin with a wave pitch as shown in Figure 2, called a flexible conduit. This is becoming more common.

The connector of the present invention was developed in view of these circumstances, and is designed specifically for connection to flexible conduit tubes, which allows the flexible conduit tubes to be attached and detached with simple operations to the above-mentioned wire/cable connection box. The purpose is to provide a connector.

A preferred embodiment of the connector of the present invention will be described below with reference to the accompanying drawings. Reference numeral 1 denotes a flexible conduit insertion tube, and this tube 1 has an opening 14 formed in a vertically divided shape on the circumferential surface thereof. It has a plurality of split pieces 11... consisting of a plurality of split pieces 11..., and some of these plural split pieces 11... have locking claws 11a... on their edges, and each of the split pieces 11... It is nicely formed.

In addition, although each of the above-mentioned insertion tubes 1 extends in parallel in the direction of the split pieces 11 from a proper position along its axial direction, the split pieces 11 are bent 3a in the same direction. Guide holes 12 are bored so as to surround the outer circumferential surface of the insertion tube 1, and each of the guide holes 12 has a guide hole 12 projecting from the back surface of the operating ring 2. The operating ring 2 is made slidable by engaging the protrusions 2a..., and the expansion of the split pieces 11 is achieved by sliding the operating ring 2 engaged in the guide hole 12... It is becoming more and more practiced.

3 is the outer wall surface 6 of the electric wire cable connection box 6
This is a tightening screw for attaching the insertion tube 1 to the wire/cable connection box 6. This screw 3 has a cable insertion hole 33, and when attaching the insertion tube 1 to the wire/cable connection box 6, the screw 3 shown in FIG. After applying the insertion tube 1 to the outside of the cable through hole 6a of the wire/cable connection box 6, insert the tightening screw 3 into the cable through hole 6a from the inside of the wire/cable connection box 6.
This is done by inserting the screw into the tube and screwing the tightening screw 3 into a threaded portion 13a carved into the inner circumferential surface of the proximal end portion 13 of the insertion tube 1.

Since the connector of the present invention has the above-described configuration, if the operating ring 2 is rotated and the split piece 11 is slid in a direction away from the split piece 11 (particularly in the connector shown in FIG. The part 12a is gently curved, so it can be done smoothly)
Since the split pieces 11 are in an expandable and free state, the end of the flexible conduit 4 can be immediately inserted into or removed from the insertion opening 14 of the insertion tube 1, and the operation ring If the split piece 2 is slid in the direction of the split piece 11... and engaged with the bent part 12a of the guide hole 12..., the split piece 11... will shrink and maintain that state. Locking claw 11
a... will dig deeply into the troughs of the waveform pitches of the flexible conduit 4, so once the flexible conduit 4 is installed, it will not come out carelessly even if an external force is applied. There isn't.

In addition, FIG. 3 shows another example of the present invention, in which the guide hole 1
Although the bent portion 12a of No. 2 is formed into a substantially right-angled shape so that the engagement of the bent portion can be reliably maintained, the present invention is not limited to these embodiments. It goes without saying that the present invention can be carried out by appropriately deforming or changing the shapes of the split pieces, the guide holes, the operating rings, and the fastening screws.

As described in detail above, the connector of the present invention is extremely convenient because the flexible conduit tube 4 can be attached and detached by simply sliding the operation ring 4.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of an embodiment of the present invention, Fig. 2 is a longitudinal sectional view of the device in use, and Fig. 3 is a perspective view of an embodiment of the present invention.
FIG. 6 is a diagram showing another example of the present invention, particularly the shape of the guide hole. Explanation of symbols, 1...Flexible conduit insertion tube, 11...
...Split piece, 11a... Its locking claw, 12... Guide hole, 2... Operation ring.

Claims (1)

[Scope of utility model registration request] A plurality of split pieces each including at least one having a locking pawl formed therein, each extending in parallel from an appropriate position along the axial direction of the cylinder, but drilled so that the split pieces are bent in the same direction as each other. The outer peripheral surface of the flexible conduit insertion tube has a plurality of guide holes and can be attached to and removed from the outer wall surface of the cable conduit connection box by screwing tightening screws from inside the cable conduit connection box. An operating ring is fitted externally so as to be slidably engaged in the plurality of guide holes, and the split pieces can be expanded by slidingly operating the operating ring. Connector for flexible conduit connection.