JP4732855B2 - Tensile wire fixing device - Google Patents

Description

  The present invention relates to a fixing device for various tensile strength wires such as a tensile strength wire of an optical fiber cable, a tensile strength wire of a power cable, and a tensile strength wire separate from the cables.

  In order to obtain tensile strength, optical fiber cables and power cables basically have tensile strength wires (tension members) built in. The tensile wire may be separate from the cables. When these tensile strength wires are attached to equipment of an optical fiber system or equipment on a power transmission path, fixtures as shown in FIGS. 3 (a) to (c) and FIGS. 4 (a) to (c) are used. .

  3 (a) to 3 (c), the tensile strength line A is inserted into the through hole C that is penetrated through the side surface of the fixture B in order to insert the tensile strength line A into the fixture B, and from the upper surface of the fixture B. By screwing a set screw E into a vertically provided screw hole D, the tensile strength line A is pushed at the tip of the set screw E to fix the tensile strength line A in the through hole C.

  4 (a) to 4 (c), the tensile strength line A is pushed into the fixing groove F of the fixing tool B from the opening G on the upper surface of the fixing tool B, and the depth direction of the fixing groove F is shown. A set screw K is screwed into a screw hole H provided in the screw hole H, whereby the tensile strength line A is pushed at the tip of the set screw K to fix the tensile strength line A in the fixing groove F.

  3A to 3C, if the diameter of the through hole C is too larger than the diameter of the tensile line A, the tensile line A inserted into the through hole C may be rattled or a set screw E may be used. Therefore, it is necessary to prepare a through hole C having a diameter that matches the diameter of the tensile strength line A. Moreover, since the tensile strength line A has to be inserted into the through hole C from one end thereof, the insertion work is troublesome and inefficient.

  4 (a) to 4 (c), since the tensile strength line A can be pushed into the fixing groove F of the fixing device B from the opening G, the width of the fixing groove F and the diameter of the tensile strength line A are shown. 3A to 3C are not required to be strictly accurate, and the tensile strength line A can be easily fixed in the fixing groove F. However, in order to push the tensile strength wire A into the fixing groove F from the opening G, the set screw H must be removed from the set screw hole K, and the removal is troublesome, and in some cases, it is removed. At that time, the set screw K may fall and be lost.

Tensile strength wire fixing device of the present application, in the tensile strength wire fixing apparatus tensile strength wire A lockable fixing grooves 3 arranged is formed in a block-shaped fixing tool 1 of the optical fiber cable, the fixture 1 is the outer periphery comprising a planar device mounting surface 20 on a part of the surface, the fixture to which the device mounting surface 20 and includes a flat groove opening surface 2 on the opposite side, continuous to the groove opening surface 2 into the groove opening surface 2 includes an inclined surface 5 of the downwardly inclined on the outer surface on the corner portion between the first outer surface from said groove opening surface 2, the fixing groove 3 across the fastener 1 in the wiring direction of the tensile strength wire a of the optical fiber cable It is formed from the groove opening surface 2 to the middle of the fixture 1 , a tensile strength line insertion / removal port 4 of the fixing groove 3 is opened to the groove opening surface 2, and an opening edge of the tensile strength line insertion / removal port 4 extends outward. a tapered, threaded hole 7 for tensile strength wire fixed or the slope 5 Wherein toward the bottom surface 6 of the fixing groove 3 is formed obliquely, the threaded hole of the screw hole 7 is opened in the inclined surface 5, of the threaded holes 7 for fixing groove 3 in the axial direction of the screw hole 7 The screw hole 7 is formed deeper than the bottom surface 6, the diameter of the screw hole 7 is larger than the diameter of the tensile strength line A, and a fixing screw hole for mounting the fixing tool 1 to the device on the device mounting surface 20 of the fixing tool 1. Two fixing holes 9 are formed, and the fixing screw holes 9 are formed on both sides of the fixing groove 3 in parallel or substantially in parallel with the fixing groove 3, and the screw holes 7 are connected to the screw holes 7. The tensile strength line A in the fixing groove 3 is fixed in the fixing groove 3 by screwing a set screw 8 into the fixing groove 3 .

The tensile strength wire fixing device of the present application has the following effects.
(1) Even if the set screw is not removed from the screw hole, the tensile strength wire can be pushed into the fixing groove from the open part only by loosening the set screw so that its tip is removed from the fixing groove. Since the tensile strength wire can be fixed in the fixing groove only by tightening, the tensile strength wire can be easily inserted into and fixed in the fixing groove, and the workability is remarkably improved. In addition, there is no risk of loss due to falling set screws.
(2) Strict accuracy is not required for the dimensions of the fixing groove and tensile strength wire. If a fixing groove with a width slightly wider than the tensile strength wire is prepared, the tensile strength can be changed even if the tensile strength wire diameter changes slightly. The wire can be securely fixed in the fixing groove.
(3) Since the screw hole is formed obliquely from the outer peripheral surface of the fixture toward the bottom surface of the fixing groove, the end of the set screw can be removed from the fixing groove by loosening the set screw slightly. Since the tensile strength wire can be fixed in the fixing groove by simply tightening the screw, tightening work is easy.

(Embodiment 1)
An embodiment of a tensile strength wire fixing device according to the present invention will be described with reference to FIGS. In this embodiment, the fixture 1 is attached to an optical fiber transmission line, a device for attaching an optical fiber cable, a termination box, or the like. The fixture 1 is a block having a circular end surface, and a fixing groove 3 is formed across the end surface 2 from the end surface 2 to the middle of the interior. The fixing groove 3 has a width capable of pushing a tensile strength line, and an open portion 4 thereof. Is open in the end face 2. The fixture 1 has a slope 5 formed on a part of the end surface 2, and an oblique screw hole 7 is opened from the slope 5 toward the bottom surface 6 of the fixing groove 3. A set screw 8 can be screwed into the screw hole 7, and the set screw 8 can be screwed into the screw hole 7 so that the tensile strength line A pushed into the fixing groove 3 can be fixed in the fixing groove 3. is there. The block can be made of metal or hard resin.

  The direction, inclination angle, diameter, depth, etc. of the screw hole 7 can be arbitrarily selected. However, if the diameter is larger than the diameter of the tensile line A as shown in FIG. By forming a little deeper than the bottom surface 6 of the fixing groove 3, the tensile strength line A can be reliably pressed against the bottom surface 6 of the fixing groove 3.

The size, shape, and the like of the fixture 1 can be selected according to the mounting location, the diameter of the tensile strength line A, and the like. Further, as shown in FIG. 2 (b), screw holes 9 are opened on the bottom surface 20 of the fixture 1, and the bottom surface is directed to a panel or a board (panel or the like) 10 in the housing. As shown in FIGS. 2A and 2B, a stopper 11 such as a screw can be screwed into the screw hole 9 and fixed to the panel 10. Of the bottom surface 20 screwable screw projection or a panel such as 10 fixture 1, other shapes such as grooves, which may be placed over the edge of the pluggable fitting protrusions, or panels, etc. 10, the attachment structure portion Can also be formed.

BRIEF DESCRIPTION OF THE DRAWINGS An example of embodiment of the tensile strength wire fixing device of this invention is shown, (a) is a top view, (b) is a front view, (c) is sectional drawing. The state which attached the fixture in this invention to the panel etc. is shown, (a) is a front view, (b) is sectional drawing. 1 shows an embodiment of a conventional tensile strength wire fixing device, (a) is a plan view, (b) is a cross-sectional view, and (c) is a side view. The other embodiment of the conventional tensile strength wire fixing device is shown, (a) is a top view, (b) is a side view, (c) is sectional drawing.

DESCRIPTION OF SYMBOLS 1 Fixing tool 2 End surface 3 Fixing groove 4 Opening part 5 Slope 6 Bottom face 7 Screw hole 8 Set screw 9 Screw hole 10 Panel etc. 11 Stop tool

Claims (1)

In the tensile wire fixing device in which the fixing groove (3) that can be fixed by arranging the tensile wire (A) of the optical fiber cable is formed in the block-shaped fixture (1) ,
The fixture (1) comprises a planar device mounting surface on a part of the outer peripheral surface (20), provided with a flat groove opening surface (2) on the side opposite the device mounting surface (20), the groove opening face (2) and the groove opening face provided with the inclined surface (5) of the downwardly inclined to the outer surface from the groove opening surface at the corner portion of the outer surface (2) of the fastener to be continuous (2) (1),
The fixing groove (3) is formed by the fixture to the wiring direction of the tensile strength wire of the optical fiber cable (A) to (1) traverses halfway fastener (1) in the said groove opening surface (2), The tensile-strength line inlet / outlet (4) of the fixing groove (3) is opened in the groove opening surface (2), and the opening edge of the tensile-strength line inlet / outlet (4) has an outwardly expanding taper shape,
Is formed obliquely toward the bottom surface of the fixing groove screw holes tensile strength wire fixing (7) from said inclined surface (5) (3) (6), the threaded hole of the threaded hole (7) is the Open to the slope (5) ,
The screw hole (7) is formed deeper than the bottom surface (6) of the fixing groove (3) in the axial direction of the screw hole (7),
The diameter of the screw hole (7) is larger than the diameter of the tensile line (A),
Two fixing screw holes (9) for mounting the fixing device (1) to the device are formed on the device mounting surface (20) of the fixing device (1).
The fixing screw holes (9) are formed on both sides of the fixing groove (3) in parallel or substantially in parallel with the fixing groove (3).
By screwing the screw (8) locking the said threaded opening in said threaded hole (7), so that the fixing groove (3) of the tensile strength wire (A) is fixed to the fixing groove (3) in A tensile strength wire fixing device characterized by that.

Images