JP2003202428A - Corner guide for optical fiber and optical fiber holder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent a corner guide for an optical fiber and a clamp from shifting in position. <P>SOLUTION: When the bottom part 41 of a clamp body 43 and a holding groove 66 of the corner guide 60 are engaged, a screw hole 45 and a through hole 73 lie concentrically, a projection part 47 is fitted into a recessed part 70, and a pin-like projection 46 projects penetrating a long hole 69. The projection part 47 and recessed part 70 prevent the clamp body 43 from shifting along the length. With a screw inserted into a through hole 73 from the screw hole 45, the clamp 40 and corner guide 60 are clamped and fixed together, and when the pin-like projection 46 projecting from the long hole 69 is fitted in a positioning hole, the corner guide 60 is prevented from being displaced by rotation when screwed up. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention belongs to the technical field of optical fiber corner guides and optical fiber holders.

[0002]

BACKGROUND OF THE INVENTION Corner guides are used to keep the curvature of an optical fiber within a proper range and prevent damage at a bent portion of the optical fiber. As an example, Patent No. 2
There is a 823547 optical fiber corner guide.

The optical fiber corner guide of Japanese Patent No. 2823547 has a pair of wings whose cross section has an arcuate convex curved surface, and a clamp holding groove formed between the wings by recessing the convex curved surface. And a fixing means for attaching the main body to another object, and is attached to another object such as an optical fiber duct.

According to this corner guide for optical fiber, the radius of curvature of the optical fiber can be maintained in an appropriate range by wiring the optical fiber along the convex curved surface of the wing. Also, the optical fiber can be bundled by fitting the clamp into the clamp holding groove and passing the optical fiber through the clamp, and at that time, the clamp is held in the clamp holding groove, so that the clamp itself There is no particular need for any means for fixing the. Moreover, since the clamp is fitted into the clamp holding groove, the work of connecting the optical fiber corner guide and the clamp is easy, and there is no fear that the work efficiency will decrease. Further, since the corner guide does not enter the inside of the clamp, the allowable amount of bundle bundles of the clamp does not decrease.

[0005]

Problems to be Solved by the Invention Japanese Patent No. 2823547
Although the optical fiber corner guide of No. 3 is excellent as described above, there is room for improvement in terms of preventing displacement of the clamp.

[0006]

According to a first aspect of the present invention, there is provided an optical fiber corner guide for solving the above-mentioned problems. A pair of wings whose cross-section has an arcuate convex curved surface, and a space between the wings. In the corner guide for an optical fiber, the clamp holding groove is provided with a main body portion having a clamp holding groove formed by being recessed with respect to the convex curved surface, and a fixing means for mounting the main body portion to another object. By holding a concave portion corresponding to the convex portion provided on the clamp or a convex portion corresponding to the concave portion provided on the clamp on the wall of the clamp holding groove, the clamp is held in the clamp holding groove. Since the convex portion is fitted into the concave portion when doing, it is possible to prevent the displacement of the clamp along the length direction of the clamp holding groove, Clamps held in the lamp holding groove can be favorably prevented from positional deviation in the longitudinal direction of the clamp holding groove. This also prevents the wiring position of the optical fiber passing through the clamp from shifting.

According to this optical fiber corner guide, the radius of curvature of the optical fiber can be kept in an appropriate range by wiring the optical fiber along the convex curved surface of the wing. The optical fiber can be bundled by, for example, fitting the clamp in the clamp holding groove and passing the optical fiber through the clamp. At that time, the clamp is held in the clamp holding groove, so that the clamp itself is fixed. Means for doing so are not particularly required. Moreover, since the clamp is fitted into the clamp holding groove, the work of connecting the optical fiber corner guide and the clamp is easy, and there is no fear that the work efficiency will decrease.

Further, since the corner guide does not enter the inside of the clamp, the allowable bundled line of the clamp does not decrease. The corner guide for optical fiber can be used alone, and even in that case, the radius of curvature of the optical fiber can be kept in an appropriate range by wiring the optical fiber along the convex curved surface of the wing.

A corner guide for an optical fiber according to a second aspect is the corner guide for an optical fiber according to the first aspect, in which the minor axis is along the width direction of the clamp holding groove and the major axis is along the length direction of the clamp holding groove. And a long hole through which a pin-shaped projection provided on the clamp held in the clamp holding groove can pass is provided at a position off the center of the bottom of the clamp holding groove. .

When the clamp is held in the clamp holding groove, the pin-shaped projection provided on the clamp penetrates the elongated hole provided at the bottom of the clamp holding groove. It is possible to fit it in a positioning hole of a board or the like to which a corner guide for use is attached.

By fitting the positioning hole and the pin-shaped projection, it is possible to prevent the corner guide for the optical fiber from being rotationally displaced. This also prevents the wiring position of the optical fiber passing through the clamp from shifting. Also, since it is a long hole, it can be used even if the position of the pin-shaped projection is changed due to a difference in size of the clamp or the like.

An optical fiber corner guide according to a third aspect is the optical fiber corner guide according to the first or second aspect, wherein the clamp held in the clamp holding groove extends in a direction away from the bottom of the clamp holding groove. Since the disengagement preventing projection that prevents movement is provided on the wall of the clamp holding groove separately from the convex portion for preventing the positional deviation, the clamp can be prevented from coming off from the clamp holding groove.

An optical fiber corner guide according to a fourth aspect of the present invention is the optical fiber corner guide according to the first, second or third aspects, wherein a through hole for a screw serving as a fixing means is provided at the center of the bottom of the clamp holding groove. Since it is provided, it is suitable for a method of fixing to a substrate or the like with screws.

An optical fiber holder according to a fifth aspect of the present invention comprises an optical fiber corner guide according to any one of the first to fourth aspects, and a clamp provided with a convex portion or a concave portion according to the first aspect. Since it is configured by, it has the same effect as described in claims 1 to 4.

An optical fiber holder according to a sixth aspect of the present invention is the optical fiber holder according to the fifth aspect, wherein the corner guide for the optical fiber is according to the fourth aspect, and the clamp is provided with the fixing means. Since a screw hole for fastening the optical fiber corner guide with the screw is provided, it is possible to fasten the optical fiber corner guide and the clamp together with one screw and fix them to the substrate or the like.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Next, embodiments of the present invention will be described with reference to some examples of the present invention.

[0017]

First Embodiment As shown in FIGS. 1 and 2, an optical fiber corner guide (hereinafter, also simply referred to as a corner guide) 10 of the present embodiment has a pair of wings 14 having a cylindrical side surface convex curved surface 12. Is equipped with. A clamp holding groove (hereinafter also simply referred to as a holding groove) 16 is formed by recessing between the wings 14 by one step.

The holding groove 16 is formed by a pair of walls 17 continuous with the wings 14 and a bottom 18 disposed between the walls 17. An arcuate recess 20 is provided in the center of the wall 17. Further, the wall 17 is provided with retaining protrusions 21 formed on both sides of the recess 20 so as to project toward the counterpart wall 17. Stopping protrusion 21
Is substantially chevron as shown in the enlarged view of FIG.
The holding groove 16 has a gentle slope on the opening side and a sharp slope on the bottom 18 side.

The bottom 18 of the holding groove 16 is provided with an elongated hole 19 at a position near one end of the holding groove 16. A snap 23 is continuously provided on the back surface of the bottom 18. The structure of the snap 23 is similar to that of a known one, and includes a spindle plate 24 and a pair of swash plates 25, and a base portion of the spindle plate 24 extends from the bottom 18.

As is well known, when the snap 23 is pushed into a hole formed in the plate while elastically deforming the swash plate 25 toward the spindle plate 24 side, the stairs provided at the tip end of the swash plate 25. The locking portion 25a is engaged with the edge of the hole, and the locking portion 25a and the bottom 18 sandwich the plate, and the plate is connected to the plate. Therefore, snap 2
The corner guide 10 can be attached to and fixed to the plate-like object by means of 3.

When the corner guide 10 is not attached to a plate-like object or the like (in an unused state), the tip of the wing 14 is located closer to the snap 23 than the back surface of the bottom 18. Therefore, when the corner guide 10 is attached and fixed to the plate-like object by the snap 23 as described above,
The tip of the wing 14 comes into contact with a plate-like object or the like and elastically deforms so as to narrow the opening width of the holding groove 16. This elastic deformation acts as a force for more firmly holding the clamp 40 (details will be described later) fitted in the holding groove 16.

The corner guide 10 is integrally formed by injection molding of a plastic material (for example, polypropylene resin or nylon resin). The corner guide 10 is installed at a position where the optical fiber is bent when the optical fiber is wired, and the optical fiber is wired along the wing 14, so that the curvature of the bent portion of the optical fiber becomes a predetermined curvature. Can be maintained. Therefore, it is possible to prevent the radius of curvature of the optical fiber from becoming too small and being damaged.

The corner guide 10 may be used alone as described above, but it is more effective when used in combination with the clamp 40 illustrated in FIG.
As shown in FIG. 3, the clamp 40 is composed of a clamp body 43 including a bottom portion 41 and a pair of arm portions 42a and 42b, and a movable bridge 44 that is stretched around the pair of arm portions 42a and 42b. The clamp body 43 and the movable bridge 44 are integrally formed by injection molding of a plastic material (for example, polypropylene resin or nylon resin).

A screw hole 45 is provided through the central portion of the bottom portion 41 of the clamp body 43. A peripheral portion of the screw hole 45 projects in an arc shape from the bottom portion 41 to form a convex portion 47. Further, the outer peripheral ribs 48 are provided on both side surfaces of the bottom portion 41.
Is provided, and a step is formed between the inner part 49 and the inner part 49. A columnar pin-shaped projection 46 is provided upright on the lower surface of the bottom portion 41 near the arm portion 42a.

The thickness of the bottom portion 41 (the distance between the outer peripheral ribs 48 on the side surface) is the width of the holding groove 16 of the corner guide 10 (the wall 1).
7), the outer shape of the convex portion 47 matches the shape of the concave portion 20 of the wall 17, and the diameter of the pin-shaped protrusion 46 is slightly smaller than the short diameter of the long hole 19.

Therefore, as shown in FIG. 4, the bottom portion 41 of the clamp body 43 can be fitted into the holding groove 16 of the corner guide 10, and the convex portion 47 is fitted into the concave portion 20 at the time of fitting. . Therefore, after the clamp body 43 is fitted in the holding groove 16, the convex portion 47 and the concave portion 2
It is possible to prevent the positional deviation from 0, that is, the clamp body 43 from being displaced in the longitudinal direction of the holding groove 16. It should be noted that the pin-shaped projection 46 penetrates through the elongated hole 19 and projects at the time of fitting.

Further, when the bottom portion 41 is pushed in from the opening of the holding groove 16 to fit it in the holding groove 16, the retaining projection 21 comes into contact with the outer peripheral rib 48 and becomes a resistance. However, since the inclination of the retaining protrusion 21 is gentle on the opening side of the holding groove 16, the retaining protrusion 21 and the outer peripheral rib 48 are elastically deformed and the outer peripheral rib 48 passes when the bottom portion 41 is strongly pressed. On the other hand, even if an attempt is made to pull out the fitted bottom portion 41, this pulling out is not easy because the steep inclination of the retaining projection 21 blocks the passage of the outer peripheral rib 48. In other words, the retaining protrusion 21 locks the outer peripheral rib 48 to prevent the clamp body 43 from being pulled out.

As shown in FIG. 3, the saw-toothed concavo-convex portion 51 is provided on the front side of the arm portions 42a and 42b, but the concavo-convex portion is not provided on the rear side. The right end portion of the movable bridge 44 includes a meshing portion 52 having a protrusion 52a corresponding to a valley of the saw-toothed concavo-convex portion 51 and a slide portion 5 having no such protrusion.
3 and the arm portion 4 is composed of the meshing portion 52 and the slide portion 53.
2b is sandwiched. The left end also has a similar meshing portion 52.
And a slide portion 53. Serrated irregularities 5
The shapes of 1 and the projections 52a are such that when a force for lowering the movable bridge 44 is applied, it does not prevent it, but when a force for raising it is applied, the movement of the movable bridge 44 is prevented.

The left and right meshing parts 52 are connected by an elastic plate 55, and the sliding parts 53 are connected by an L-shaped member 56. Then, the elastic plate 55 and the L-shaped member 56
And are connected at a flexible fulcrum 57. Therefore, when the vicinity of the letters “PRESS” of the elastic plate 55 is elastically deformed by being pressed against the L-shaped member 56, the meshing portion 52 is displaced around the flexible fulcrum 57 and moves away from the serrated uneven portion 51. As a result, the movable bridge 44 can be raised.

The upper end of the arm portion 42b is open, and the meshing portion 52 is formed.
Although the sliding portion 53 is not prevented from coming off, the upper end of the arm portion 42a is closed by the arc-shaped rib 58, so that the engagement portion 52 and the sliding portion 53 are prevented from coming off. For this reason, if the meshing portion 52 and the slide portion 53 are separated from the arm portion 42b with the movable bridge 44 as the rising end, the rib 58 is formed.
The movable bridge 44 can be rotated around the vicinity.

Therefore, the movable bridge 4 is operated as described above.
4 is rotated to open the tip portions of the arm portions 42a and 42b, and the optical fiber is passed between the arm portions 42a and 42b of the clamp body 43, and then one end of the movable bridge 44 is set to the arm portion 42b. By mounting and pushing down the movable bridge 44, the optical fiber can be held by being sandwiched between the movable bridge 44 and the bottom portion 41. That is, the optical fibers can be held in a bound state. Of course, even one optical fiber can hold it. Further, the optical fiber may be passed through in a state where the movable bridge 44 is appropriately raised without being removed from the arm portion 42b.

As described above, the optical fiber corner guide 10 has the clamp 4 held in the clamp holding groove 16.
By providing the concave portion 20 corresponding to the convex portion 47 provided on the clamp holding groove 16 in the wall 17 of the clamp holding groove 16, the convex portion 47 is formed into the concave portion 2 when the clamp 40 is held in the clamp holding groove 16.
With the zero-fitting state, it is possible to favorably prevent the displacement of the clamp 40 along the length direction of the clamp holding groove 16. This prevents the wiring position of the optical fiber passing through the clamp 40 from being displaced.

Further, this optical fiber corner guide 1
According to 0, by wiring the optical fiber along the convex curved surface 12 of the wing 14, the radius of curvature of the optical fiber can be maintained in an appropriate range. The clamp 40 is fitted in the clamp holding groove 16 to fix the optical fiber to the clamp 40.
The optical fiber can be bundled by passing it inside.
At that time, since the clamp 40 is held in the clamp holding groove 16, no means for fixing the clamp 40 itself is necessary. Moreover, the clamp 40 has the clamp holding groove 16
Since it is fitted into the optical fiber corner guide 10
The connecting work between the and the clamp 40 is also easy, and there is no fear that work efficiency will be reduced.

Further, since the corner guide 10 does not enter the inside of the clamp 40, the bundle allowable amount of the clamp 40 does not decrease. When the clamp 40 is held in the clamp holding groove 16, the pin-shaped projection 46 provided in the clamp 40 penetrates the elongated hole 19 provided in the bottom 18 of the clamp holding groove 16. It becomes possible to fit 46 into a positioning hole of a substrate or the like to which the optical fiber corner guide 10 is attached.

By fitting the positioning hole and the pin-shaped projection 46, it is possible to prevent the corner guide 10 for the optical fiber from being rotationally displaced. Thereby, the shift of the wiring position of the optical fiber passing through the inside of the clamp 40 is also prevented.
Further, since it is the elongated hole 19, it is possible to deal with the case where the position of the pin-shaped projection 46 is changed due to a difference in size of the clamp 40 or the like.

The optical fiber corner guide 10 includes a retaining projection 21 provided on the wall 17 of the clamp holding groove 16.
However, since the outer peripheral rib 48 of the clamp 40 fitted in the clamp holding groove 16 is locked, the clamp 40 can be prevented from coming off from the clamp holding groove 16.

Further, when the optical fiber corner guide 10 is attached to a substrate or the like, the wings 14 elastically deform and narrow the opening width of the clamp holding groove 16, so that the fitting force for holding the clamp 40 increases. It is possible to prevent the clamp 40 from falling off or shifting.

[0038]

[Embodiment 2] A corner guide for an optical fiber having a structure of fixing to a substrate or the like with screws will be described as Embodiment 2.
As shown in FIGS. 5 and 6, a corner guide for an optical fiber of this embodiment (hereinafter, also simply referred to as a corner guide).
The numeral 50 includes a pair of wings 64 having a convex curved surface 62 having a cylindrical side surface. A clamp holding groove (hereinafter, simply referred to as a holding groove) 56 is formed by recessing one step between both wings 64.

The holding groove 66 is formed by a pair of walls 67 continuous with the wings 64 and a bottom 68 disposed between the walls 67. Further, ribs 65 are provided so as to connect the ends of the wings 64 and the wall 67 to each other. Wall 6
An arcuate concave portion 70 is provided at the center of 7. Further, the wall 67 is provided with retaining protrusions 71 formed on both sides of the recess 70 so as to project toward the counterpart wall 67. The retaining protrusion 71 is substantially mountain-shaped as shown in an enlarged view in FIG. 5E, but the holding groove 66 has a gentle slope on the opening side and a sharp slope on the bottom 68 side.

The bottom 68 of the holding groove 66 is provided with a long hole 69 at a position near one end of the holding groove 66. Further, a through hole 73 for a screw is provided at the center of the bottom 68, and the corner guide 60 can be fixed by screwing the corner guide 60 to a plate-like object or the like with the screw inserted in the through hole 73. .

The corner guide 60 is integrally formed by injection molding of a plastic material (for example, polypropylene resin or nylon resin). The corner guide 60 is installed at a position where the optical fiber is bent when the optical fiber is wired, and the optical fiber is wired along the wing 64 so that the curvature of the bent portion of the optical fiber becomes a predetermined curvature. Can be maintained. Therefore, it is possible to prevent the radius of curvature of the optical fiber from becoming too small and being damaged.

The corner guide 60 may be used alone as described above, but it is more effective when used in combination with the clamp 40 illustrated in FIG.
The structure of the clamp 40 and the like are as described in the first embodiment. As shown in FIG. 7, the bottom portion 4 of the clamp body 43
1 can be fitted into the holding groove 66 of the corner guide 60, and at the time of fitting, the screw hole 45 and the through hole 73 are concentrically overlapped with each other, the convex portion 47 is fitted into the concave portion 70, and the pin-shaped projection is formed. 46 penetrates the long hole 69 and projects.

Therefore, the clamp body 43 is held in the holding groove 16
After the fitting is done, the positional deviation between the convex portion 47 and the concave portion 70, that is, the clamp body 43 is prevented from being displaced in the longitudinal direction of the holding groove 66. Further, when the bottom portion 41 is pushed into the holding groove 66 from the opening of the holding groove 66, the retaining projection 71 comes into contact with the outer peripheral rib 48 and becomes a resistance. However, since the inclination of the retaining protrusion 71 is gentle on the opening side of the holding groove 66, if the bottom portion 41 is pushed hard, the retaining protrusion 71 and the outer peripheral rib 48 elastically deform and pass through the outer peripheral rib 48. On the other hand, even if an attempt is made to pull out the fitted bottom portion 41, this pulling out is not easy because the steep inclination of the retaining projection 71 blocks the passage of the outer peripheral rib 48. That is, the retaining protrusion 71 locks the outer peripheral rib 48 to prevent the clamp body 43 from being pulled out.

Since the screw hole 45 and the through hole 73 are concentrically overlapped with each other, the clamp 40 and the corner guide 60 are fastened together with the screw inserted into the through hole 73 from the screw hole 45 side to form them into a plate shape. It can be fixed by being screwed onto an object or the like (for example, a substrate). At that time, the pin-shaped projection 46 protruding through the elongated hole 69 is fitted into the positioning hole of the substrate or the like, so that the corner guide 60 can be tightened when the screw is tightened.
Can be prevented from displacing around, and screw tightening work can be performed well. Further, since the pin-shaped projections 46 fitted in the positioning holes of the board or the like prevent the corner guides 60 from being rotated and displaced even after being mounted on the board or the like in this way, the light passing through the inside of the clamp 40 is prevented. The deviation of the wiring position of the fiber is also prevented.

As described above, the optical fiber corner guide 60 has the clamp 4 held in the clamp holding groove 66.
By providing the concave portion 70 corresponding to the convex portion 47 provided on the clamp holding groove 66 in the wall 67 of the clamp holding groove 66, the convex portion 47 becomes the concave portion 7 when the clamp 40 is held in the clamp holding groove 66.
By fitting into 0, the positional displacement of the clamp 40 along the length direction of the clamp holding groove 66 can be favorably prevented. This prevents the wiring position of the optical fiber passing through the clamp 40 from being displaced.

Also, this optical fiber corner guide 6
According to 0, by wiring the optical fiber along the convex curved surface 62 of the wing 64, the radius of curvature of the optical fiber can be maintained in an appropriate range. The clamp 40 is fitted in the clamp holding groove 66 to fix the optical fiber to the clamp 40.
The optical fiber can be bundled by passing it inside.
At that time, the clamp 40 is held in the clamp holding groove 66, so that a means for fixing the clamp 40 itself is not particularly required. Moreover, the clamp 40 has the clamp holding groove 66.
Since it is fitted into the optical fiber corner guide 60
The connecting work between the and the clamp 40 is also easy, and there is no fear that work efficiency will be reduced.

Further, since the corner guide 60 does not enter the inside of the clamp 40, the bundle allowable amount of the clamp 40 does not decrease. When the clamp 40 is held in the clamp holding groove 66, the screw hole 45 of the clamp 40 and the through hole 73 of the corner guide 60 are concentrically overlapped with each other, so the screw inserted from the screw hole 45 side into the through hole 73 is used. , The clamp 40 and the corner guide 60 together, and screw them to a plate-shaped object or the like (for example, a substrate),
Can be fixed.

Further, since the pin-shaped projection 46 of the clamp 40 penetrates the elongated hole 69 of the corner guide 60, the pen-shaped projection 46 that penetrates the corner guide 6 for the optical fiber.
It becomes possible to fit a positioning hole in a substrate or the like to which 0 is attached. If the pin-shaped projections 46 are fitted into the positioning holes of the board or the like, the corner guides 60 can be tightened when tightening the screws.
Can be prevented from displacing around, and screw tightening work can be performed well. Further, since the pin-shaped projections 46 fitted in the positioning holes of the board or the like prevent the corner guides 60 from being rotated and displaced even after being mounted on the board or the like in this way, the light passing through the inside of the clamp 40 is prevented. The deviation of the wiring position of the fiber is also prevented.

Further, since it is the long hole 69, the clamp 40
Even if the position of the pin-shaped projection 46 changes due to the difference in size, etc. The optical fiber corner guide 60 includes a retaining protrusion 71 provided on a wall 67 of the clamp holding groove 66.
However, since the outer peripheral rib 48 of the clamp 40 fitted in the clamp holding groove 66 is locked, the clamp 40 can be prevented from coming off from the clamp holding groove 66.

Although the embodiments of the present invention have been described with reference to the two examples, the present invention is not limited to these examples and can be variously implemented without departing from the gist of the present invention. It goes without saying that you can do it.

[Brief description of drawings]

1A and 1B are explanatory views of an optical fiber corner guide of Example 1, where FIG. 1A is a plan view, FIG. 1B is a front view, and FIG.
Is a sectional view taken along the line A-A in (a), (d) is a sectional view taken along the line BB, and (e) is an enlarged view of a portion D in (d).

2A and 2B are explanatory views of an optical fiber corner guide of Example 1, where FIG. 2A is a rear view, FIG. 2B is a view taken along the line EE in FIG. 2A, and FIG. Fig.

FIG. 3 is a three-sided view of the clamp used in Examples 1 and 2.

FIG. 4 is a plan view showing a state in which a clamp is attached to the optical fiber corner guide of the first embodiment.

5A and 5B are explanatory views of an optical fiber corner guide of Example 2, where FIG. 5A is a plan view, FIG. 5B is a front view, and FIG.
Is a sectional view taken along the line A-A in (a), (d) is a sectional view taken along the line BB, and (e) is an enlarged view of a portion D in (d).

6A and 6B are explanatory views of an optical fiber corner guide of Example 2, where FIG. 6A is a rear view, FIG. 6B is a view taken along line EE in FIG. 6A, and FIG. Fig.

FIG. 7 is a plan view showing a state in which a clamp is attached to the optical fiber corner guide of the second embodiment.

[Explanation of symbols]

10 Optical fiber corner guide 12 convex curved surface 14 wings 16 Clamp holding groove 17 walls 18 bottom 19 slots 20 recess 21 Protrusion 23 Snap 40 clamps 41 bottom 43 Clamp body 44 Movable bridge 45 screw holes 46 pin-shaped protrusion 47 convex 48 outer rib 60 Optical fiber corner guide 62 convex curved surface 64 wings 65 ribs 66 Clamp holding groove 67 walls 68 Bottom 69 slot 70 recess 71 protrusion 73 Through hole

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) F16B 21/06 F16B 21/06 A 5G363 H02G 3/30 H05K 7/00 E H05K 7/00 H02G 3/26 HF terms (reference) 2H038 AA21 CA34 3J022 DA15 EA16 EB02 EB14 EC14 EC22 ED27 FA05 FB03 FB05 FB12 GA04 GA11 GA24 GB23 3J036 AA03 BA01 DA12 DB04 3J037 AA02 BA02 BB07 CC02 BB07 DR38BB02 BB07 DRABB DA13

Claims (6)

[Claims] 1. A main body including a pair of wings each having a cross section of an arcuate convex curved surface, and a clamp holding groove formed between the wings to be recessed with respect to the convex curved surface, and the main body. In a corner guide for an optical fiber including a fixing means for attaching to another object, a concave portion corresponding to a convex portion provided on the clamp held in the clamp holding groove or a convex portion corresponding to a concave portion provided on the clamp. By providing the portion on the wall of the clamp holding groove, when the clamp is held in the clamp holding groove, the convex portion fits into the concave portion, so that along the length direction of the clamp holding groove. An optical fiber corner guide capable of preventing displacement of the clamp. 2. The optical fiber corner guide according to claim 1, wherein the minor diameter is a long hole along the width direction of the clamp holding groove, and the long diameter is a long hole along the length direction of the clamp holding groove. A corner guide for an optical fiber, wherein an elongated hole through which a pin-shaped projection provided on a clamp held in a holding groove can pass is provided at a position deviated from the center of the bottom of the clamp holding groove. 3. The corner guide for an optical fiber according to claim 1, wherein the retainer protrusion for preventing the clamp held in the clamp holding groove from moving in a direction away from the bottom of the clamp holding groove is provided at the position. A corner guide for an optical fiber, characterized in that the corner guide is provided on the wall of the clamp holding groove separately from the convex portion for preventing deviation. 4. The corner guide for an optical fiber according to claim 1, 2 or 3, wherein a through hole for a screw serving as the fixing means is provided in the center of the bottom of the clamp holding groove. Corner guide for optical fiber. 5. An optical fiber holder comprising the optical fiber corner guide according to any one of claims 1 to 4 and the clamp provided with the convex portion or the concave portion according to claim 1. 6. The optical fiber holder according to claim 5, wherein the optical fiber corner guide is according to claim 4, and the clamp is provided with a screw serving as the fixing means. An optical fiber holder characterized in that a screw hole for tightening together with a guide is provided.