JP2002022977A - Optical fiber fixing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make an optical fiber fixable to a printed board or the like with a small number of parts. SOLUTION: The optical fiber fixing device which fixes optical fiber 1 to printed board 6 or the like is composed of a clamp member 2 which is long in the longitudinal direction of the optical fiber 1 to be stored, an optical fiber storing chamber 4 which is formed within the clamp member 2 and the both ends of which are opened in both end surfaces of the clamp member 2, and a slit 5 which is formed over the whole length of the clamp member 2 so as to reach the optical fiber storing chamber 4 from the upper surface of the clamp member 2. Thus, the optical fiber 1 is fixed to the printed board 6 just only by attaching one clamp member 2 to the printed board 6 or the like.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical fiber fixing device for fixing an optical fiber used for optical communication to a printed circuit board or the like.

[0002]

2. Description of the Related Art Conventionally, when an optical fiber used for optical communication is fixed to a printed circuit board or the like, an optical fiber fixing device as shown in FIGS. 11 and 12 is used.

The conventional optical fiber fixing device comprises a plurality of clamp members a integrally formed of a synthetic resin.

In the clamp member a, an upper side c of a frame body b formed in a square frame shape is inclined in a substantially inverted shape, and an optical fiber d is inserted into the frame body b at a lowermost portion of the upper side c. Is formed.

A leg h having a tapered locking portion g is projected from substantially the center of the lower side f, and this leg h is pressed into a mounting hole j opened in the printed circuit board i. Thus, the clip member a is attached to the printed circuit board i.

On the other hand, when an optical fiber d is fixed to a printed circuit board i, a clamp member a is attached to each of a plurality of mounting holes j opened in the printed circuit board i as shown in FIG. The optical fiber d is fixed to the printed circuit board i by press-fitting the optical fiber d into the frame b against the elasticity of the upper side c from the formed slit e.

[0007]

However, like a conventional optical fiber fixing device, an optical fiber d is accommodated in a frame b of a clamp member a and the optical fiber d is fixed to a printed circuit board i. Then, in order to fix the optical fiber d to the printed circuit board i so as not to be loosened, it is necessary to attach a large number of clamp members a to the printed circuit board i. .

When the optical fiber d is fixed to the printed board i in a curved manner, the optical fiber d cannot be fixed in a predetermined curve unless a large number of clamp members a are attached to the printed board i. There is also a problem that the optical fiber d protrudes from the area a and comes into contact with peripheral electronic components and the like, causing damage.

The present invention has been made to solve the above-mentioned conventional problems, and has as its object to provide an inexpensive optical fiber fixing device that can easily and efficiently fix an optical fiber to a printed circuit board. .

[0010]

To achieve the above object, an optical fiber fixing device of the present invention is an optical fiber fixing device for fixing an optical fiber to a printed circuit board or the like, comprising: The optical fiber accommodating chamber is formed in the clamp member and has both ends opened at both end surfaces of the clamp member, and a slit formed over the entire length of the clamp member so as to reach the optical fiber accommodating chamber from the upper surface of the clamp member. It was done.

With the above structure, the optical fiber can be fixed to the printed circuit board or the like simply by attaching one clamp member to the printed circuit board or the like.
The work time can be greatly reduced as compared with the case of fixing using a large number of conventional clamp members, so that the work efficiency can be improved and the number of parts can be reduced, so that an optical fiber fixing device can be provided at a low cost. it can.

In order to achieve the above object, in the optical fiber fixing device of the present invention, the clamp member is formed by an elastic body.

According to the above configuration, since the clamp member formed of the elastic body can be freely bent, the optical fiber is fixed to the printed circuit board or the like with an arbitrary curve by attaching it to the printed circuit board or the like along an arbitrary curve in advance. In addition, since the optical fiber does not protrude from the clamp member, it is possible to solve the problem that the optical fiber comes into contact with peripheral electronic components and is damaged.

In order to achieve the above-mentioned object, the optical fiber fixing device of the present invention is such that a groove having an appropriate cross-sectional shape is formed along the slit at the opening edge on the upper surface side of the slit.

According to the above configuration, since the slit is easily formed and the slit is easily expanded from the concave groove, the operation of housing the optical fiber in the optical fiber housing can be easily performed.

In order to achieve the above object, an optical fiber fixing device of the present invention has a plurality of vertical grooves formed on at least one side surface of a clamp member at intervals in the longitudinal direction of the clamp member.

According to the above configuration, since the clamp member is more easily bent, the clamp member can easily follow an arbitrary curve.

In order to achieve the above object, an optical fiber fixing device according to the present invention is characterized in that at least one side surface of a clamp member is provided with a peephole reaching the optical fiber housing chamber.

According to the above configuration, the clamp member is more easily bent, so that the clamp member can easily follow an arbitrary curve, and the optical fiber in the optical fiber chamber can be confirmed from the viewing hole.

In order to achieve the above object, the optical fiber fixing device of the present invention has a thin portion formed between the upper surface of the clamp member and the optical fiber housing chamber, and the slit is formed in the thin portion.

According to the above configuration, since the formation of the slit becomes easy, the man-hour required for the production can be reduced.

In order to achieve the above object, an optical fiber fixing device according to the present invention has a thin portion formed by forming a V-groove on the upper surface of a clamp member.

According to the above configuration, the slit is easily formed and the slit is easily expanded from the V-groove, so that the operation of housing the optical fiber in the optical fiber housing can be easily performed.

In order to achieve the above object, the optical fiber fixing apparatus of the present invention is provided with legs for fixing the clamp member to a printed circuit board or the like on the bottom surfaces on both ends of the clamp member.

With the above structure, the clamp member can be attached to a printed circuit board or the like simply by opening a mounting hole in the printed circuit board or the like.

In order to achieve the above object, the optical fiber fixing device of the present invention has at least one leg protrudingly provided between the legs protruding from the bottom surfaces at both ends of the clamp member.

According to the above configuration, a clamp member bent along an arbitrary curve can be attached to a printed board or the like without breaking the curve.

To achieve the above object, the optical fiber fixing device of the present invention is such that a plurality of optical fibers can be accommodated in an optical fiber accommodating chamber in a clamp member.

According to the above configuration, a plurality of optical fibers can be accommodated at the same time, so that the accommodation efficiency is improved.

[0030]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described in detail with reference to the drawings shown in FIGS.

FIG. 1 is a plan view of an optical fiber fixing device, FIG. 2 is a side view of the same, FIG. 3 is an enlarged sectional view taken along line AA of FIG. 2, and FIGS.

The optical fiber fixing device comprises a rectangular column-shaped clamp member 2 elongated in the longitudinal direction of the optical fiber 1 to be accommodated.
And a plurality of legs 3 projecting from the bottom surface of the clamp member 2, and the whole is integrally formed of an elastic material such as silicone rubber.

The clamp member 2 has an optical fiber housing chamber 4 having a circular cross section, for example, formed therein in the axial direction.
Both ends of the optical fiber storage chamber 4 are open at both end surfaces of the clamp member 2, and a slit 5 is formed on the upper surface of the clamp member 2 so as to reach the optical fiber storage chamber 4 from the upper surface.

The slit 5 is formed for accommodating the optical fiber 1 to be fixed to the printed circuit board 6 in the optical fiber accommodating chamber 4 and is formed substantially at the center of the upper surface of the clamp member 2 in the width direction over the entire length. ing.

On the other hand, the legs 3 projecting from the bottom surface of the clamp member 2 are for attaching the clamp member 2 to the printed circuit board 6, and are, for example, projectingly provided at three places substantially at the both ends and the center of the clamp member 2. ing.

A neck portion 9 having a diameter slightly smaller than the inner diameter of the mounting hole 8 opened in the printed circuit board 6 and a tapered locking portion 10 formed from the neck portion 9 to the front end portion are provided. The portion is formed to have a diameter larger than the inner diameter of the mounting hole 8 of the printed circuit board 6, and the center of the leg 3 is
A hollow portion 11 is formed so that the locking portion 10 can be easily pressed into the mounting hole 8.

Next, the operation of the optical fiber fixing device constructed as described above will be described.
Is fixed linearly, as shown in FIG. 4, for example, three mounting holes 8 are linearly opened in the printed circuit board 6 at the same interval as the legs 3 protruding from the clamp member 2.

Next, the leg portions 3 projecting from the bottom surface of the clamp member 2 are press-fitted into these mounting holes 8 from the upper surface side of the printed circuit board 6, and the clamp member 2 is mounted on the printed circuit board 6. After that, the locking portion 10 at the tip of the leg 3 is locked to the lower surface of the printed circuit board 6, so that
The clamp member 2 can be securely attached to the second member.

After the clamp member 2 is mounted on the printed circuit board 6, the optical fiber housing 4
The optical fiber 1 is press-fitted into the optical fiber housing chamber 4 while pushing and expanding the slit 5 formed so as to reach the optical fiber housing chamber 4. Since the optical fiber 1 is fixed to the printed circuit board 6 in a state where the optical fiber 1 is inserted, it is only necessary to attach one clamp member 2 to the printed circuit board 6. The work of fixing the optical fiber 1 can be performed more efficiently in a shorter time than in the case of fixing.

On the other hand, when the optical fiber 1 is fixed to the printed circuit board 6 in a curved manner, for example, three mounting holes 8 are opened in the printed circuit board 6 along the curve as shown in FIG. The leg 3 protruded from the clamp member 2 may be press-fitted into the printed circuit board 6 because the clamp member 2 is formed of an elastic material.
Can be attached to the clamp member 2.

When the clamp member 2 is mounted on the printed circuit board 6, the optical fiber 1 may be press-fitted into the optical fiber housing chamber 4 through the slit 5 of the clamp member 2, and the optical fiber 1 housed in the optical fiber housing chamber 4 is shown in FIG.
Since the optical fiber 1 is held at a predetermined curve by the clamp member 2 as shown in FIG.

The slit 5 reaching the optical fiber housing chamber 4 from the upper surface of the clamp member 2 is formed by using a cutter or the like after the molding of the clamp member 2. By forming the V-shaped groove 12 as shown in FIG. 8 over the entire length, the distance from the groove 12 to the optical fiber housing chamber 4 becomes thin, so that the slit 5 can be easily formed. At the same time, the slits 5 are easily expanded by the concave grooves 12, so that the work of press-fitting the optical fiber 1 is also facilitated.

Further, since the clamp member 2 is formed of an elastic material, it can be bent along an arbitrary curve. However, as shown in FIG. A plurality of vertical grooves 13 having an arbitrary sectional shape, for example, V-shaped grooves may be formed at intervals in the longitudinal direction.

Further, as shown in FIG.
A peep hole 14 of an arbitrary shape reaching the optical fiber accommodating chamber 4 may be opened in the longitudinal direction on both side surfaces of the clamp member 2. The peep hole 14 cuts both sides of the clamp member 2 so that the clamp member 2 is easily bent. At the same time, the optical fiber 1 housed in the optical fiber housing chamber 4 can be confirmed from the peephole 14.

The optical fiber housing chamber 4 formed in the clamp member 2 may have a larger sectional area so that a plurality of optical fibers 1 can be housed at the same time.

In the above embodiment, the case where the optical fiber 1 is fixed to the printed circuit board 6 has been described. However, the present invention can be used not only for the printed circuit board 6 but also for fixing the optical fiber 1 to a chassis or a housing of an electronic component. Of course.

[0047]

As described in detail above, the present invention can fix an optical fiber to a printed circuit board or the like only by attaching one clamp member to the printed circuit board or the like. Since the working time is greatly reduced as compared with the case where the optical fiber is fixed, the efficiency of work can be improved, and the number of parts can be reduced. Therefore, an optical fiber fixing device can be provided at low cost.

Further, since the clamp member formed of the elastic body can be freely bent, it is possible to fix the optical fiber to the printed circuit board or the like with an arbitrary curve by attaching the optical fiber to the printed circuit board or the like along an arbitrary curve in advance. In addition, since the optical fiber does not protrude from the clamp member, problems such as breakage due to contact with peripheral electronic components can be solved.

[Brief description of the drawings]

FIG. 1 is a plan view of an optical fiber fixing device according to an embodiment of the present invention.

FIG. 2 is a side view of the optical fiber fixing device according to the embodiment of the present invention.

FIG. 3 is a sectional view taken along line AA of FIG. 2;

FIG. 4 is an explanatory diagram of an operation when the clamp member of the optical fiber fixing device according to the embodiment of the present invention is mounted on a printed circuit board.

FIG. 5 is a diagram illustrating an operation when an optical fiber is mounted on a printed circuit board by the optical fiber fixing device according to the embodiment of the present invention;

FIG. 6 is an explanatory diagram of an operation when the clamp member of the optical fiber fixing device according to the embodiment of the present invention is mounted on a printed circuit board.

FIG. 7 is an explanatory diagram of an operation when an optical fiber is attached to a printed circuit board by the optical fiber fixing device according to the embodiment of the present invention;

FIG. 8 is a sectional view showing a modified example of the clamp member constituting the optical fiber fixing device according to the embodiment of the present invention.

FIG. 9 is a side view showing a modified example of the clamp member constituting the optical fiber fixing device according to the embodiment of the present invention.

FIG. 10 is a side view showing a modified example of the clamp member constituting the optical fiber fixing device according to the embodiment of the present invention.

FIG. 11 is an explanatory diagram of an operation when a clamp member of a conventional optical fiber fixing device is mounted on a printed circuit board.

FIG. 12 is an explanatory view of fixing an optical fiber to a printed circuit board by a conventional optical fiber fixing device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Optical fiber 2 Clamp member 3 Leg part 4 Optical fiber accommodation room 5 Slit 6 Printed circuit board 12 Concave groove 13 Vertical groove 14 Peephole

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Claims (10)

[Claims] 1. An optical fiber fixing device for fixing an optical fiber to a printed circuit board or the like, comprising: a clamp member that is long in a longitudinal direction of an optical fiber to be accommodated; An optical fiber fixing device, comprising: an optical fiber housing chamber that opens to the inside; and a slit formed over the entire length of the clamp member so as to reach the optical fiber housing chamber from the upper surface of the clamp member. 2. The optical fiber fixing device according to claim 1, wherein said clamp member is formed of an elastic body. 3. The optical fiber fixing device according to claim 1, wherein a concave groove having an appropriate cross-sectional shape is formed along an opening edge of the upper surface of the slit along the slit. 4. The optical fiber fixing device according to claim 1, wherein a plurality of vertical grooves are formed on at least one side surface of the clamp member at intervals in a longitudinal direction of the clamp member. apparatus. 5. The optical fiber fixing device according to claim 1, wherein a viewing hole reaching the optical fiber housing chamber is opened on at least one side surface of the clamp member. 6. The optical fiber fixing device according to claim 1, wherein a thin portion is formed between the upper surface of the clamp member and the optical fiber storage chamber, and the slit is formed in the thin portion. 7. The optical fiber fixing device according to claim 6, wherein the thin portion is formed by forming a V-groove on an upper surface of the clamp member. 8. The optical fiber fixing device according to claim 1, wherein legs for fixing the clamp member to a printed circuit board or the like are protrudingly provided on bottom surfaces on both ends of the clamp member. 9. The optical fiber fixing device according to claim 8, wherein at least one leg is protruded between the legs protruding from the bottom surfaces on both ends of the clamp member. 10. The optical fiber fixing device according to claim 1, wherein a plurality of optical fibers can be accommodated in an optical fiber accommodating chamber in said clamp member.