JPH0343800Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Technical Field of the Invention) The present invention relates to a metal wire-inserted cable mounting bracket that is useful, for example, when pulling a single-layered iron wire-inserted cable into equipment.

(Technical background of the invention) In general, a mounting bracket as shown in FIG. 1 is known as a device for connecting iron wire armored cables to equipment.

That is, the other end of the cylindrical metal fitting main body 3 surrounding the iron wire armored cable 1 and having the taper 2 at one end is fixed to the equipment case 4 by screwing,
The reinforcement wire 5 of the cable 1 is fixed by being sandwiched between the taper 2 of the metal fitting body 3 and the taper 7 of a cylindrical fastening metal fitting 6 screwed onto the outer periphery of this metal fitting body. . A packing 8 surrounding the cable is tightly attached to the outer periphery of the cable sheath 11 by a tightening nut 10 screwed onto the outer periphery of the rear end of the tightening fitting 6 via a fitting 9.

(Problems with Background Art) In the cable mounting bracket constructed as described above, only the cable sheath portion is watertight, but when considering waterproofness, there are the following drawbacks.

(a) Since the threaded portion between the metal fitting body 3 and the fastening metal fitting 6 is simply screwed together, there is a risk that moisture may enter from this portion and corrode the cable's armor wire.

(b) The auxiliary wires 5 aligned with the taper 2 of the metal fitting body 3 are rubbed when the fastening metal fitting 6 is screwed on, so the aligned auxiliary wires may become disordered and tightening may become difficult.

(c) Since the metal fitting main body 3 and the device case 4 are simply fixed by screws, there is a risk that moisture may enter from this part, as in (a) above.

(Purpose of the invention) The present invention was made with attention to the above points, and it is an installation of a metal wire armored cable that has a watertight configuration and can tighten and fix the reinforcement wires in a state where the reinforcement wires are aligned. The purpose is to provide metal fittings.

(Summary of the invention) In this invention, packing is provided between the fitting body and the equipment case and between the fitting body and the tightening lock nut, and the metal wire sheathing is placed inside the tightening lock nut. The above objective is achieved by tightening through metal fittings.

(Embodiment of the invention) Hereinafter, the invention will be explained based on the drawings of one embodiment. In FIG. 2, in which the same parts as in FIG.
2. A thick-walled cylinder 14 that is connected to the rear end of this thin-walled cylinder and has a screw 13 on the outer periphery of the rear end; and a cylindrical metal fitting body 16 that is connected to the rear end of this thick-walled cylinder and has a tapered taper 15; The packing 19 is screwed onto the outer periphery of the thin-walled cylinder 12 of the metal fitting body that is penetrated through the through hole 17 of the equipment case 4, and is disposed between the stepped wall 18 of the equipment case 4 and the metal fitting body 16 by this screwing. A tightening lock nut 20 for tightening, a thick wall 21 at the middle part, a screw 22 on the outer periphery of the rear end, and a metal fitting body 1.
A packing 23 is arranged between the outer periphery of the thick-walled cylinder 14 of No. 4 and the inner periphery of its own tip, and a screw formed on the inner periphery near the tip of the metal fitting body 16 connects the thick-walled cylinder 1 of the metal fitting main body 16.
4. A cylindrical tightening fitting 2 that is screwed onto a screw 13 on the outer periphery.
4, and a cylindrical brace wire fitting 26 disposed inside the intermediate portion of the tightening fitting 24 and having a taper 25 on the inner periphery of the tip portion corresponding to the taper 15 of the fitting main body.
The packing 2 is screwed into the screw 22 on the outer periphery of the rear end of the clamping fitting 24, and is disposed between the outer periphery of the cable 1 and the inner periphery of the rear end of the clamping fitting 24 by this screwing.
7 in the axial direction via a ring-shaped stopper 28.

In the metal wire-clad cable mounting bracket having such a structure, the cable core 30 exposed by step stripping is inserted into the metal fitting body 16, and the similarly exposed reinforcing wire 5 is connected to the taper 15 of the metal fitting body. By screwing the screw formed on the inner periphery of the tip of the clamping fitting 24 between the tapers 25 of the wiring fitting 26 into the screw 13 of the fitting main body 16, the reinforcing wire 5 is firmly tightened and fixed. Ru. This is the tightening fitting 2
4 is screwed forward, the thick portion 21 of this metal fitting, that is, the stepped portion 31 becomes in a shape that pushes the fitting 26 for reinforcing wire.

In addition, the reference numeral 32 in the figure indicates an earth duct mounting plate.

(Effects of the invention) As described above, in the present invention, the reinsertion wire is tightened through the reinforcing wire fitting, so
To prevent the reinforcing wires from being rubbed between the fitting body and the fastening fitting, and to tighten and fix the reinforcing wires in an aligned state.

In addition, the entire mounting bracket has a watertight structure with three types of packing 19, 23, and 27, so water does not enter the mounting bracket and corrode the connecting wires, and moisture does not enter the equipment case. There is no fear of infiltration.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of a conventional metal wire-inserted cable mounting bracket, and FIG. 2 is a longitudinal sectional view of the metal wire-inserted cable mounting bracket of the present invention. 1... Metal wire armored cable, 4... Equipment case, 5... Armored wire, 16... Metal fitting body, 20...
...Tightening lock nut, 24...Tightening metal fitting, 26...
...Fitting wire fitting, 29...Tightening nut, 1
9, 23, 27...Patzking.

Claims (1)

[Scope of utility model registration request] A thin-walled cylinder having a thread on the outer periphery, a thick-walled cylinder that is connected to the rear end of the thin-walled cylinder and has a screw on the outer periphery of the rear end, and a cylindrical metal fitting that is continuous to the rear end of this thick-walled cylinder and has a tapered shape. The main body and the outer periphery of the thin-walled cylinder of the metal fitting main body penetrated through the through hole of the device case,
The tightening lock nut tightens the packing disposed between the step wall of the equipment case and the metal fitting body by this screwing, and the tightening lock nut has a thick middle part and is provided with a screw on the outer periphery of the rear end, and the metal fitting body A packing is arranged between the outer periphery of the thick-walled cylinder and the inner periphery of its own tip,
a cylindrical fastening fitting whose screw formed on the inner periphery near the tip thereof is screwed into a screw on the thick-walled cylinder outer periphery of the fitting main body; A cylindrical reinforcing wire fitting with a taper corresponding to the taper of the fitting body on the inner periphery of the tip is screwed into a screw on the outer periphery of the rear end of the tightening fitting, and this threading causes the outer periphery of the cable to and a tightening nut that presses the packing disposed between the inner periphery of the rear end of the tightening fitting in the axial direction via a ring-shaped fitting. Mounting hardware.