JP3330000B2 - Optical fiber cable fixing plug - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plug for fixing an optical fiber cable, and more particularly to a plug for transmitting digital signals.
The present invention relates to a plug for fixing an optical fiber cable used in A devices, FA devices, between devices, and AV devices.

[0002]

2. Description of the Related Art A conventional optical fiber cable fixing plug will be described below.

FIGS. 6A and 6B are views showing the structure of a conventional plug for fixing an optical fiber cable. FIG. 6A is a perspective view showing a finished product, and FIG. 6B is a perspective view showing the front side of a first component. (C) is a perspective view showing the back side of the first component, (d) is a perspective view showing the second component,
(E) is a perspective view showing a third component.

[0004] As shown in the figure, a conventional optical fiber cable fixing plug has three components. Two of the components are for fixing the optical fiber cable, and the other component is for improving the appearance.

One of the two fixing components is a plastic fixing component 1, and one is a metal fixing component 2. In addition, the appearance component is a plastic appearance component 3.

The plastic fixing part 1 is provided with a through hole 4 into which an optical fiber cable is inserted. The through hole 4 has a diameter substantially equal to the diameter of the optical fiber cable.
Diameter. An insertion hole 5 into which four legs of the metal fixing part 2 can be inserted in a direction perpendicular to the through hole 4.
And a square hole 6 at a position adjacent to the insertion hole 5, into which the entire metal fixing component 2 can be inserted. Further, convex portions 7 for fitting with the external parts 3 made of plastic are provided at the same position on two opposing surfaces.

The metal fixing part 2 is formed in a U-shaped sheet metal, and four legs 2a and cuts 2b slightly smaller than the diameter of the optical fiber cable are provided at the same position on two parallel surfaces. It becomes.

The plastic exterior part 3 is provided with a housing 8 for accommodating the plastic fixing part 1, and the projection 8 of the plastic fixing part 1 is fitted inside the housing 8. There are provided two concave portions 9 to be combined.

The method of fixing an optical fiber cable will be described. First, an optical fiber cable is inserted into the through hole 4 of the plastic fixing part 1 described above. Subsequently, the four holes 2a of the metal fixing component 2 are inserted into the insertion holes 5 in the direction perpendicular to the through holes 4, and the cuts 2b of the metal fixing component 2 are cut into the coating of the optical fiber cable. This secures the fiber optic cable. The metal fixing component 2 is fixed to the plastic fixing component 1 by inserting four legs 2 a into the insertion holes 5. Finally, the plastic fixing part 1 is inserted into the storage part 8 of the plastic appearance part 3, and the convex part 7 of the plastic fixing part 1 and the concave part 9 of the plastic appearance part 3 are fitted. Finished product.

FIGS. 7A and 7B are views showing the structure of another conventional optical fiber cable fixing plug, in which FIG. 7A is a perspective view showing a finished product, and FIG. 7B is a perspective view showing a first component. , (C) is a perspective view showing a second component,
(D) is a perspective view showing a third component.

As shown in the figure, the plug for fixing the optical fiber cable has three components. Two of the components are used for fixing the optical fiber cable, and the other component is used for improving the appearance.

One of the two fixing components is a plastic fixing component 11 and one is a metal fixing component 12.

The plastic fixing part 11 is provided with a through hole 14 into which an optical fiber cable is inserted, and the through hole 14 has substantially the same diameter as the diameter of the optical fiber cable.

Further, two notches 15 are provided in a part thereof in parallel with the first through hole 14. The notch 15 allows a plurality of support portions 16 to hold the optical fiber cable.
Is formed. When a load is applied from the vertical direction, the support portion 16 is displaced into a shape that crimps the optical fiber cable inserted into the through hole 14.

Further, the plastic appearance component 1
3 are provided at the same location on two opposing surfaces.

The metal fixing part 12 is formed of a rectangular metal plate having a dimension capable of substantially making a round on the side of the plastic fixing part 11 where the notch 15 is formed.

The plastic exterior part 13 is a storage part 18 for accommodating the plastic fixing part 11.
The concave portion 19 for fitting with the convex portion 17 of the plastic fixing component 1 is provided in two places inside the storage portion 18.

The method of fixing the optical fiber cable will be described. First, the optical fiber cable is inserted into the through hole 14 of the plastic fixing part 11 and penetrated. Subsequently, the metal fixing part 12 is folded so as to cover the notch 15 and the support part 16 of the plastic fixing part 11, and this part is tightened. By doing so, cutout 15
As a result, a load is applied to the portion from above and below, and the optical fiber cable is fixed to the plastic fixing component 11. Next, the storage section 18 of the plastic appearance part 13
The plastic fixing part 11 to which the optical fiber cable is fixed is inserted into the
1 convex portion 17 and concave portion 19 of plastic appearance part 13
Are fitted to form a finished product.

[0019]

However, in the conventional plug for fixing an optical fiber cable, there are many components constituting the plug, such as three parts, and the material and assembly take time, which hinders the development of low-priced products. .

The present invention has been made in view of the above problems, and has as its object to provide an optical fiber cable fixing plug having a reduced number of components.

[0021]

According to the first aspect of the present invention, there is provided a plug for fixing an optical fiber cable, comprising two first through holes into which two optical fiber cables are inserted, respectively.
The two first through holes are vertically displaced with respect to each of the two first through-holes, and two sets of support portions for sandwiching each of the two optical fiber cables, and two second sets for displacing each of the two sets of support portions. A first component having one notch, two second through holes into which two optical fiber cables are respectively inserted, and a storage part having substantially the same shape as the first component and storing the first component are provided. And a second component provided with a displacement projection for displacing the supporter on the surface of the first component or the surface of the housing, and the first component and the second component are provided. One of the two components is provided with a fitting protrusion and the other is provided with a fitting recess. The first component has the fitting protrusion or the fitting recess provided on the two sets of support portions. In contrast, the first structure And it is characterized in that become disposed through-out the second cut provided in the component.

According to a second aspect of the present invention, in the optical fiber cable fixing plug according to the first aspect, the fitting convex portion or the fitting concave portion provided on the first component part may be attached to the storage part. Characterized by being provided with a displacement concave portion for displacing at the time of insertion.

According to the above configuration, the optical fiber cable fixing plug according to the first aspect of the present invention fixes the optical fiber cable as described below.

That is, the optical fiber cable is inserted from the second through hole of the second component into the housing, the second component is penetrated, and the optical fiber cable is directly inserted into the first through hole of the first component. Next, in this state, the first component is inserted into the storage portion of the second component, and the fitting protrusion or the fitting recess of the first component is fitted with the fitting recess or the fitting protrusion of the second component. Push down until mated. At this time, due to the action of the notch and the projection for displacement, the first component is inserted into the storage portion of the second component and receives a load from above and below. The optical fiber cable is displaced to a predetermined position where the cable can be supported, and the optical fiber cable is fixed to the optical fiber cable fixing plug.

According to a second aspect of the present invention, in the optical fiber cable fixing plug according to the first aspect, the fitting protrusion or the fitting recess provided in the first component may be attached to the storage portion. Is provided with a displacement concave portion for displacing at the time of insertion, so that the fitting convex portion or the fitting concave portion provided on the first component has a spring property, and
When the component is pushed into the storage of the second component,
The fitting protrusion or the fitting recess is smoothly inserted into the fitting recess or the fitting protrusion for fitting and holding the second component.

[0026]

Embodiments of the present invention will be described below.

FIGS. 1 to 3 are views for explaining an optical fiber cable fixing plug according to an embodiment of the present invention, and FIG. 1 is a view showing the relationship between a first component and a second component. (A) is a plan view, and (b) is a cross-sectional view taken along the line AA 'of (a). FIG. 2 is a diagram showing the structure of the first component, and FIG. 3 is a diagram showing the structure of the second component.

As shown in FIG. 1, the plug for fixing an optical fiber cable according to the present embodiment has a first component 21 stored and held in a second component 22.

The specific structure of the first component 21 will be described with reference to FIG. In the drawings, (a) is a plan view, (b) is a left side view, (c) is a right side view, (d) is a front view, and (e) is B in (b). −
It is B 'sectional drawing, (f) is CC' sectional drawing of (a), (g) is DD 'sectional drawing of (a).

The first component 21 is provided with a first through hole 23 into which an optical fiber cable is inserted, and the first through hole 23 has substantially the same diameter as the diameter of the optical fiber cable.

Further, a first notch 24 is provided in a part of two surfaces facing each other in parallel with the first through hole 23. The first
The notch 24 forms a plurality of support portions 25 for holding the optical fiber cable. When a load is applied from above and below in the vertical direction, the support portion 25 is displaced into a shape that crimps the optical fiber cable. 26 is the first component 2
A displacing projection for displacing the support portion 25 when stored in the first second component 22.

Further, a second notch 27 is provided in parallel with the first through hole 23 into which the optical fiber cable is inserted, and a fitting which can move independently of a portion for caulking the optical fiber cable through the second notch 27. An external projection 28 is provided. A concave portion 29 for displacement is provided on the back surface side of the convex portion 28 for fitting, and the convex portion 28 for fitting receives a load from above and below in the vertical direction when the first component 21 is stored in the second component 22. Displaces when added.

Next, the specific structure of the second component 22 will be described with reference to FIG. In the figure,
(A) is a plan view, (b) is a left side view,
(C) is a right side view, (d) is a front view,
(E) is a bottom view, (f) is an EE 'sectional view of (b), (g) is an FF' sectional view of (a),
(H) is GG 'sectional drawing of (a).

The second component 22 is provided with a second through hole 30 for inserting an optical fiber cable, and the second through hole 30 has a diameter substantially equal to the diameter of the optical fiber cable. Further, the second through hole 30 is in contact with a storage portion 31 having a shape into which the first component 21 can be inserted.

The second component 22 is provided with a fitting recess 32 for fitting with the fitting projection 28 of the first component 21 and for fitting and holding the first component 21. ing.

Next, a method for fixing the optical fiber cable will be described.

First, an optical fiber cable is inserted from the second through-hole 30 of the second component part 22 into the storage part 31, and the second
It penetrates the component part 22. The optical fiber cable is inserted into the first through hole 23 of the first component 21 as it is.

Next, in this state, the first component 21 is
The first component 21 is inserted into the storage portion 31 of the component 22.
Of the fitting concave portion 32 of the second component 22.
Push it in until it fits. When the first component 21 is pushed in, the fitting recess 32 has a spring property by the action of the second notch 27 and is smoothly inserted into the fitting recess 32 for fitting and holding the second component 22. , First component 2
The first and second components 22 fit together. Separately from this, the first component 21 is inserted into the storage portion 31 of the second component 22 by the action of the first notch 24 and the projection 26 for displacement, thereby receiving a load from above and below, and 25 is displaced to a predetermined position that can sufficiently support the optical fiber cable without being excessively displaced up and down, and the optical fiber cable is fixed to the optical fiber cable fixing plug.

As described above, according to the plug for fixing an optical fiber cable of the present embodiment, the number of components
The number of components is reduced to two, and the number of components can be reduced. As a result, assembly becomes easier and assembly time can be reduced.
Therefore, it is possible to develop and realize low-priced products.

In the above-described embodiment, the displacement projection 26 is provided on the support portion 25 of the first component. However, the displacement projection 26 may be provided on the surface of the storage portion 30 of the second component 22. In this case, the same operation and effect as those of the above embodiment can be obtained.

The first component 21 is fitted with the fitting projection 28.
And the second component 22 is provided with the fitting concave portion 32. However, as shown in FIGS. 4 and 5, the first component 21 is provided with the fitting concave portion 33 and the second component 22 is fitted. The structure in which the joint convex portion 34 is provided may be adopted. In this case, the same operation and effect as those of the above embodiment can be obtained.

FIGS. 4A and 4B are views showing the structure of the first component 21a, wherein FIG. 4A is a plan view, FIG. 4B is a left side view, and FIG. 4C is a right side view. (D) is a front view, (e) is a cross-sectional view taken along the line HH 'of (b), and (f) is
FIG. 3A is a cross-sectional view taken along the line II ′ of FIG.
It is -J 'sectional drawing. FIG. 5 shows the second component 22a.
3A is a plan view, FIG. 3B is a plan view, FIG.
Is a left side view, (c) is a right side view, (d) is a front view, (e) is a bottom view, and (f) is (b).
(G) is an LL 'cross-sectional view of (a), and (h) is an MM' cross-sectional view of (a).

[0043]

As described above, according to the plug for fixing an optical fiber cable of the present invention, the number of components can be reduced, and as a result, assembly becomes easier and assembly time can be reduced. Therefore, it is possible to develop and realize low-priced products.

According to the plug for fixing an optical fiber cable of the second aspect, since the fitting projection or the fitting recess provided on the first component has a spring property, the first component is connected to the second component. It is inserted smoothly when it is pushed into the storage part for component parts.

[Brief description of the drawings]

FIG. 1 is a plan view showing a relationship between a first component and a second component of an optical fiber cable fixing plug according to an embodiment of the present invention.

FIG. 2 is a view showing a structure of a first component shown in FIG. 1;

FIG. 3 is a view showing a structure of a second component shown in FIG. 1;

FIG. 4 is a view showing the structure of another first component.

FIG. 5 is a view showing the structure of another second component.

FIG. 6 is a view showing a structure of a conventional optical fiber cable fixing plug.

FIG. 7 is a view showing the structure of another conventional optical fiber cable fixing plug.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 21 1st component 22 second component 23 1st through-hole 24 1st notch 25 support part 26 Shifting protrusion 27 2nd notch 28,34 Fitting convex part 29 Displacement recess 30 2nd through-hole 31 Storage Parts 32,33 fitting recess

Continuation of the front page (56) References JP-A-63-129978 (JP, U) JP-A 62-33011 (JP, U) JP-A 61-126209 (JP, U) JP-A 6-60804 (JP) , U) (58) Field surveyed (Int. Cl. ⁷ , DB name) G02B 6/36

Claims (2)

(57) [Claims] 1. Two first through holes into which two optical fiber cables are respectively inserted, and displaced in a direction perpendicular to each of the two first through holes, and sandwich each of the two optical fiber cables. A first component having two sets of support parts, two first cutouts for displacing each of the two sets of support parts, and two optical fiber cables, into which two optical fiber cables are respectively inserted. A second through hole having a shape substantially the same as that of the first component and a storage portion for storing the first component.
And a displacement projection for displacing the support portion on the surface of the first component or the surface of the storage portion, and the first component and the second component are provided. Providing a fitting convex portion on one of them and providing a fitting concave portion on the other, the first component has the fitting convex portion or the fitting concave portion with respect to the two sets of supporting portions, A plug for fixing an optical fiber cable, wherein the plug is arranged via a second notch provided in a first component. 2. The first component is provided with a displacement recess for displacing the fitting projection or the fitting recess provided on the first component when the fitting component is inserted into the storage portion. The plug for fixing an optical fiber cable according to claim 1, wherein: