JPS5918422Y2 - fiber cord holder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fiber cord holder for fixing an optical fiber cord.

Conventionally, in optical communication equipment using optical fiber cords as transmission paths, the fiber cords are fixed by binding the optical fiber cord 1 to a metal fitting 2 using a band 3 made of nylon or the like, as shown in FIG. As shown in FIG. 2, a method is used, such as holding the optical fiber cord 1 between two rubber plates 4 and 4' with a clamp 5.

However, these methods have the following drawbacks.

That is, in the first method, each optical fiber cord 1 is tied to the metal fitting 2 with a band 3 made of nylon or the like, which is difficult to work with, and in both the first and second methods, the area for pressing the optical fiber cord 1 is small. Therefore, tightening the cable too strongly will cause distortion to the optical fiber cord, which will damage its properties.

For this reason, strong tightening is impossible, and therefore strong holding force cannot be obtained.

Further, it is difficult to change the orientation of the fiber cord 1, or if a strong pulling external force is applied, the fiber cord 1 will be suddenly bent at the fixed portion, causing damage.

The present invention was devised to improve this drawback.

Therefore, in the fiber cord holder of the present invention, the first spring is made of an elastic band-shaped wire rod and is formed into a coil shape with the longitudinal direction of the cross section facing the radial direction, and the first spring is made of a wire rod with a rectangular cross section. A second spring formed in a coil shape with an outer diameter smaller than the outer diameter of the spring is screwed together, and both ends of the spring can be pressed against the main body having a flange and the main body by screws, etc. It is characterized by being clamped and cut by a supported pushing flange.

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 3 shows a partially sectional side view of the embodiment.

In the figure, reference numeral 6 is a first spring, 7 is a second spring, 8 is a main body, 9 is a push flange, and 10 is a pusher.
A belt-shaped wire rod made of a material such as synthetic resin is used, and is wound into a coil so that the elongated direction of its cross section is oriented in the radial direction.

The second spring 7 is made of a wire having a rectangular cross section and is wound into a coil having a diameter smaller than the outer diameter of the first spring 6 by about twice the diameter of the optical fiber cable used.

This second spring 7 is screwed together with the first spring 6.

The combined first spring 6 and second spring 7 are inserted into the main body 8 having a flange 8a,
It is held between the push flange 9 and the flange 8a of the main body 8.

Note that the push flange 9 is a push screw 10 provided on the main body 8.
It is supported so that it can be pressed.

This embodiment thus constructed is used as shown in FIG.

That is, as shown in the figure, the optical fiber cord 1 is connected to the first spring 6.
By winding the spring into the spiral groove created by the second spring 7 and pressing the push flange 9 with the push screw 10, the width of the groove created by the first and second springs is reduced and the light is emitted. The fiber cord 1 is pressed and fixed.

At this time, the thickness of the second spring 7 prevents the fiber cord from being compressed more than necessary.

Furthermore, when the push screw 10 is loosened, the first spring 6 tries to restore itself due to its elasticity, expanding the width of the groove and releasing the optical fiber cord 1.

The fiber cord holder of the present invention has the following advantages.

First, since the optical fiber cord can be held down over a wide area, the amount of deformation of the optical fiber cord is small and a large holding force can be obtained.Also, the holding force can be easily increased by increasing the number of times the optical fiber cord is wrapped around the holder. can be increased.

Note that it is even more effective if the friction coefficient of the surface of the first spring is increased.

Second, the direction of the optical fiber cord 1 can be freely changed as shown in FIGS. 5A to 5C.

Thirdly, the optical fiber cord can be fixed by simply operating the push screw.
Workability is good because it can be released.

Fourth, if a transparent material is used for the first spring 6, the state of the fixed optical fiber cord can be visually confirmed.

Fifth, by increasing the number of turns of the spring, a plurality of fiber cords can be fixed at the same time.

Sixthly, by setting the outer diameter of the second spring 7 to twice the minimum bending radius of the optical fiber cord, the optical fiber cord will not be damaged.

The fiber cord holder of the present invention has the advantages described above, improves the workability of assembling optical communication equipment, increases the fixing force of the optical fiber cord, prevents breakage, etc. This contributes to improving the reliability of communication equipment.

[Brief explanation of drawings]

1 and 2 are perspective views showing a conventional method of fixing an optical fiber cord, FIG. 3 is a side view showing a partial cross section of a fiber cord holder according to an embodiment of the present invention, and FIGS. FIG. 5 is an explanatory diagram showing the state of use thereof.

Claims (1)

[Scope of utility model registration request] A first spring is formed by using an elastic band-shaped wire material and formed into a coil shape with the longitudinal direction of its cross section facing the radial direction, and a wire material having a rectangular cross section is formed into a coil shape with an outer diameter smaller than the outer diameter of the first spring. A second spring formed in a coil shape is screwed together, and both ends of the springs are sandwiched between a main body having a flange and a push flange that is pressably supported by the main body with a screw or the like. Fiber cord holder.