JPH1048433A - Fiber holder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a fiber holder capable of holding the curvature of optical fibers in an adequate range at corners, etc., and preventing the breaking thereof. SOLUTION: The substrate 16 of the fiber holder 10 has a convex surface 12 and a plane part 14. Plural comb tooth projections 30 are erected on this plane part 14. The respective comb tooth projections 30 have two column parts 32, beam parts 36 transversely installed between these column parts 32 and 32 and elastic parts 34 fixed at their one-side ends to these beam parts 36. When the optical fiber 50a is pushed between the comb tooth projections 30, the optical fiber 50a is pushed while elastically deforming the elastic parts 34. The pushed optical fibers 50b to 50d are held by the elastic repulsion of the elastic parts 34 and are connected to the fiber holder 10. The optical fibers are then bent along the convex surface 12. The radii of curvature may be maintained within an adequate range by aligning the optical fibers 50b to 50d.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a fiber holder.

[0002]

2. Description of the Related Art Conventionally, optical communication is performed using an optical fiber. The optical fiber has some flexibility and can be bent if it does not exceed its tolerance. When a LAN or the like is to be constructed using this optical fiber, it may be necessary to bend the optical fiber at an angle close to a right angle at a corner or the like. In such a case, if the radius of curvature is reduced, the optical fiber is broken. Therefore, it is required to maintain the curvature of the optical fiber at a corner or the like in an appropriate range.

An object of the present invention is to provide a fiber holder that can maintain the curvature of an optical fiber in a corner or the like within an appropriate range and prevent the optical fiber from being broken.

[0004]

As a means for solving the above-mentioned problems, a fiber holder according to claim 1 can be employed. The fiber holder includes a substrate having a convex curved surface, a plurality of comb-teeth protrusions juxtaposed on the convex curved surface side of the substrate, and a fixing member for fixing the substrate to another object.

[0005] When the convex side of the substrate is called the front side, the fiber holder is fixed to a pit, a duct or the like by a fixing member with the back side facing the corner or the like. That is, the corners and the like are covered by the convex curved surface. Here, as the convex curved surface, a quadratic curved surface such as a side surface of a cylinder or an elliptic cylinder, a side surface of a cone, or the like is exemplified.

When wiring an optical fiber, the optical fiber is aligned by inserting the optical fiber between the comb teeth, and the radius of curvature is maintained in an appropriate range by bending the direction along a convex curved surface. Can be. Claim 2
In the described fiber holder, the comb tooth protrusion has an elastic member that is elastically repelled by the external force when the comb tooth protrusion is elastically deformed by an external force in a direction of expanding the distance between adjacent comb tooth protrusions. Therefore, when the optical fiber is pushed between the comb-tooth protrusions to elastically deform the elastic member, the optical fiber is sandwiched between the comb-tooth protrusions by its elastic repulsion. For this reason, it is possible to prevent the optical fiber from dropping off from the comb tooth projection or to move in the length direction thereof, and to reliably hold the optical fiber.

According to a third aspect of the present invention, if the fixing member is provided with a snap that fits into a fitting hole provided in the object, the fiber holder can be simply inserted by pushing the snap into the fitting hole of the pit or duct. Can be fixed to a pit or a duct.

[0008]

Next, an embodiment of the present invention will be described with reference to an embodiment of the fiber holder having the above-described structure.

[0009]

As shown in FIG. 1, a fiber holder 10 of this embodiment includes a substrate 16 having a cylindrically curved convex surface 12 and a flat portion 14 smoothly joined thereto. As shown in FIGS. 1, 2, and 3, a plurality of comb teeth protrusions 30 are provided upright on the plane portion 14 of the substrate 16. Each of the comb-tooth protrusions 30 has a shape in which the letter E is turned over, and is disposed on the plane portion 14 by two pillar portions 32 of the comb-tooth protrusion 30.
In addition, the elastic portion 34 of the comb tooth protrusion 30 includes two pillar portions 32,
One end is disposed on the beam portion 36 horizontally disposed between the beam portions 32 and protrudes slightly obliquely, but elastically so as to enter and exit between the column portions 32, with the vicinity of the joint with the beam portion 36 as a fulcrum. Deformable. Further, the beam portion 36 has a wedge-like shape on the elastic portion 34 side and thin on the upper end side.

A plurality (five in this embodiment) of such comb teeth projections 30 are arranged in parallel on the flat portion 14 of the substrate 16, and guide walls 18 and 20 are provided at both ends of the substrate 16. I have. On one guide wall 18, two snaps 22,
3, fitting holes 42, 42 provided in, for example, a wiring duct wall 40 or the like, as shown in FIG.
The fiber holder 10 can be fixed by fitting the snaps 22 and 24 into the fiber holder 10. As shown in FIGS. 1 and 3, the guide wall 18 has a groove-shaped recess 38 corresponding to the elastic portion 34 of the adjacent comb tooth projection 30.
Is provided.

The upper end 21 of the other guide wall 20 is provided with a column 21a, an elastic portion 21b, and a beam 21c, and has a structure similar to that of the comb-shaped projection 30. Next, assuming that the fiber holder 10 is fixed to the wiring duct wall 40 and the like by the snaps 22 and 24, a method of using the fiber holder 10 will be described.

First, as shown by an arrow A in FIG.
The optical fiber 50 a is positioned between the beam portions 36, between the beam portion 36 and the guide wall 18, or between the beam portion 36 and the beam portion 21 c of the guide wall 20 along the beam portion 36 of the comb tooth protrusion 30. Next, the optical fiber 50a is pushed in a direction toward the plane portion 14. At this time, if a plate-like pushing tool such as a flathead screwdriver is used, the optical fiber 50
Pushing in a is easy. Since the elastic portion 34 (or the elastic portion 21b) is elastically deformed in accordance with the pushing, the optical fiber 50a is easily pushed to a position where it comes into contact with the flat portion 14.

The optical fiber 5 pushed between the comb teeth 30 or between the comb teeth 30 and the guide walls 18 and 20 as described above.
Ob to 50d are sandwiched between the adjacent comb-tooth protrusions 30 or between the adjacent comb-tooth protrusions 30 and the guide walls 18 and 20 by the elastic repulsion of the elastic portions 34 and 21b. Then, as shown in FIG. 1, it is bent along the convex curved surface 12.

As described above, the optical fibers 50a to 50d can be aligned by being inserted between the comb-shaped projections 30, and the radius of curvature can be maintained in an appropriate range by bending the direction along the convex curved surface 12. Further, since the optical fibers 50a to 50d are sandwiched by the elastic repulsion of the elastic portion 34 of the comb tooth protrusion 30 and the elastic portion 21b of the guide wall 20, the optical fibers 50a to 50d are prevented from falling off from the comb tooth protrusion 30. . Therefore, the optical fibers 50a to 50d can be reliably held.

Further, the fiber holder 10 can be fixed to the pit or the duct simply by pushing the snaps 22 and 24 into the fitting holes of the pit or the duct. Therefore, the fixing of the fiber holder 10 is extremely simple. As described above, according to the embodiment, the embodiment of the present invention has been described.
The present invention is not limited to such an embodiment,
It goes without saying that various implementations can be made without departing from the spirit of the present invention.

For example, as shown in FIG.
24 can also be provided on the guide wall 20 contrary to the embodiment. Further, a double-sided adhesive tape can be provided on the guide wall to fix the fiber holder to another object.

[0017]

As described above, according to the fiber holder according to the first aspect, the optical fiber is aligned by inserting the optical fiber between the comb-shaped projections, and the direction is bent along the convex curved surface. The radius of curvature can be kept in an appropriate range.

Further, according to the fiber holder of the second aspect, the optical fiber can be prevented from falling off from the comb teeth projection and can be securely held. The fiber holder according to the third aspect is easily fixed to a pit or a duct.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view illustrating the structure of a fiber holder according to an embodiment.

FIG. 2 is a front view of the fiber holder of the embodiment.

3A and 3B are explanatory views of a fiber holder according to an embodiment. FIG. 3A is a side view of a snap side, and FIG. 3B is a plan view.

FIG. 4 is a plan view of an example in which the position of a snap is reversed with respect to the fiber holder of the embodiment.

[Explanation of symbols]

10 ... fiber holder, 12 ... convex curved surface, 14
..Flat portions, 16 ... substrates, 18 ... guide walls, 2
0: guide wall, 21: upper end, 21a: column, 21b: elastic part, 21c: beam, 22, 2
4 Snap (fixing member), 30 Comb projection,
32 ... pillar part, 34 ... elastic part (elastic member), 36
... beam part, 38 ... concave part, 42 ... fitting hole, 50
a to 50d: Optical fiber.

Claims (3)

[Claims] 1. A substrate having a convex curved surface, a plurality of comb-shaped protrusions juxtaposed on the convex curved surface side of the substrate, and a fixing member for fixing the substrate to another object. Fiber holder. 2. The fiber holder according to claim 1, wherein said comb-tooth protrusion has an elastic member which resiliently repels said external force when it is elastically deformed by an external force in a direction of expanding a distance between adjacent said comb-tooth protrusions. A fiber holder, characterized in that: 3. The fiber holder according to claim 1, wherein the fixing member is a snap that fits into a fitting hole provided in the object.