JP2003139968A - Optical fiber cord fixing device and its binding and fixing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an optical fiber cord fixing device which can fix an optical fiber cord while relaxing lateral pressure applied to its optical fibers. SOLUTION: A bundle binding body 21 and a band stopper part 25 which can be bound and fixed to a wire harness, the body of an automobile, etc., are formed integrally with a cord holding part 10 having a holding hole 11 into which the optical fiber cord F can be inserted and held. The binding body 21 is led around to the wire harness and the body of the automobile and fixed to the band stopper part 25.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical fiber cord fixing device used for laying an optical fiber cord inside and outside an automobile, a device or the like, and a binding and fixing method thereof.

[0002]

2. Description of the Related Art For example, when laying an optical fiber cord inside an automobile, if the optical fiber cord is bound with a binding band or the like and fixed to the body of the automobile as in a normal wire harness, the binding A large lateral pressure is applied to the optical fiber cord at the part, and the optical loss becomes large.

For this reason, conventionally, only the optical fiber cord has been installed in a safe route with special consideration so as not to apply a sudden bending or lateral pressure thereto.

[0004]

However, if only the optical fiber cord is laid on a special safe route, the number of man-hours for laying the optical fiber cord is increased accordingly, which is a hindrance to the spread of the optical fiber. Was there.

Therefore, an object of the present invention is to provide an optical fiber cord fixing device and a method for binding and fixing the optical fiber cord, which can fix the optical fiber cord while relaxing the lateral pressure applied to the optical fiber.

[0006]

[Means for Solving the Problems] In order to solve the above problems,
The invention according to claim 1 is an optical fiber cord fixing device for fixing an optical fiber cord to a predetermined member to be attached, wherein the cord holding is formed with a holding hole through which the optical fiber cord can be inserted and held. And a mounting portion that is provided on the cord holding portion and that can be mounted and fixed to a member on the mounting target side.

As described in claim 2, a split groove into which the optical fiber cord can be press-fitted may be formed on one side of the cord holding portion.

According to a third aspect of the present invention, the attachment portion is provided with a binding band body provided so as to extend from the cord holding portion, and the attachment portion is provided with the cord holding portion to fix the binding band body. It may be configured to have a possible band stopper portion.

Further, it is preferable that the length dimension of the holding hole is larger than the width dimension of the binding band body.

Still further, according to a fifth aspect of the present invention, the attachment portion can bind and fix each electric wire constituting the wire harness to the wire harness in a form arranged around the outer peripheral portion of the cord holding portion. You may have a pair of binding band body.

In this case, in binding and fixing the optical fiber cord fixing device to the wire harness, the method of claim 6
As described, each wire that makes up the wire harness,
The pair of binding band members may be bound and fixed to the wire harness in a form arranged around the outer peripheral portion of the cord holding portion.

Further, according to a seventh aspect of the present invention, the pair of binding bands are wrapped around a part of the electric wire constituting the wire harness so as to be held from both sides of the part of the electric wire. The cord is arranged on one side of the outer periphery of the holding part, and the pair of binding bands are once intersected with each other and pulled out to the other side of the outer periphery of the cord holding part so that other electric wires constituting a wire harness are connected to the cord holding part. The pair of binding band bodies may be fixed to each other by winding the pair of binding band bodies around these other electric wires so as to be arranged around the other side of the outer peripheral portion.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION {First Embodiment} An optical fiber cord fixing device according to a first embodiment of the present invention will be described below.

As shown in FIGS. 1 and 2, the optical fiber cord fixing device 1 is for fixing the optical fiber cord F to a member to be attached, which includes a cord holding portion 10 and an attaching portion. And a section 20.

Here, the optical fiber cord F has a coating portion formed of resin or the like on the outer periphery of the optical fiber. Further, as the member to be attached side, a body of the automobile, a wire harness including a bundle of electric wires laid on the body, a case of other equipment, and the like are assumed.

The cord holding portion 10 is an optical fiber cord F.
A holding hole 11 capable of inserting and holding is formed.

Specifically, the cord holding portion 10 is formed into a substantially cylindrical shape, more specifically, a substantially cylindrical shape, and a circular hole-shaped holding hole 11 is formed inside the cord holding portion 10 along the axial direction. It is said that.

The holding hole 11 has an inner peripheral shape and an inner diameter corresponding to the outer peripheral shape and outer diameter of the optical fiber cord F, and the optical fiber cord F is opened from the one end side opening to the other end side opening of the holding hole 11. By inserting the optical fiber cord F in such a manner that the optical fiber cord F is pressed in, the intermediate portion in the longitudinal direction of the optical fiber cord F is inserted and held for a predetermined length.

The length dimension of the holding hole 11 is larger than the width dimension of the binding band body 21 described later. Then, the force applied from the binding band body 21 side is dispersed over the entire length direction of the holding hole 11 to act on the optical fiber cord F, and the optical fiber cord F is fixedly held. .

The attaching portion 20 is provided on the cord holding portion 10 and is constructed so as to be attachable and fixable to a member to be attached.

Specifically, the mounting portion 20 has a binding band body 21 and a band stopper portion 25.

The binding band body 21 is provided so as to extend from the cord holding portion 10, and the band stopper portion 25 is provided in the cord holding portion 10 so that the binding band body 21 can be fixed. ing.

In the present embodiment, the binding band body 21 is fixed to the band stopper portion 25 by the following structure.

That is, the binding band body 21 is formed in a band shape extending from an outer peripheral portion of the cord holding portion 10 and an intermediate portion in the longitudinal direction thereof.

On one side surface side of the binding band body 21, ridge portions 22 are formed at predetermined intervals along the longitudinal direction thereof. Each protruding portion 22 is formed in a protruding shape extending along the width direction of the binding band body 21.

Further, the band stopper portion 25 is formed so as to protrude from the outer peripheral portion of the cord holding portion 10 and the intermediate portion in the longitudinal direction thereof.

The band stopper portion 25 is formed with an insertion hole 26 into which the binding band body 21 can be inserted. The inner peripheral portion of the insertion hole 26 is provided with each of the ridges 22 of the binding band body 21. An engaging piece 27 that can be engaged with is formed.

Then, the binding band 21 is inserted into the insertion hole 2
When it is inserted into 6, the projecting ridge portions 22 are locked to the locking pieces 27, and the binding band body 21 is fixed to the band stopper portion 25. At this time, the binding band body 21 is inserted into the insertion hole 2
Depending on the amount of insertion and withdrawal into the inside 6, the projecting ridges 22 at appropriate positions in the longitudinal direction of the binding band body 21 are locked to the locking pieces 27. That is, the fixing position of the binding band body 21 by the band stopper portion 25 is configured to be arbitrary depending on the thickness of the member to be attached and the like.

The structure for fixing the binding band body 21 and the band stopper portion 25 is not limited to the above.
In addition, it is possible to apply a configuration related to a known binding band used for bundling linear objects such as electric wires.

Next, an example of use of the optical fiber cord fixing device 1 will be described.

First, in the first example of use shown in FIG. 3, the optical fiber cord fixing device 1 is used to fix the optical fiber cord F to the wire harness H.

That is, a plurality of electric wires W are provided on the body of the automobile.
The wire harness H that is bundled is fixed and laid by using a suitable fixing means.

Then, after the optical fiber cord F is inserted and held in the cord holding portion 10 in advance, the binding band body 21 is wound around the outer periphery of the wire harness H toward the band stopper portion 25. Draw around. Then, the wire harness is tightened with the binding band body 21 so that a predetermined position in the longitudinal direction of the binding band body 21 is fixed to the band stopper portion 25.

As a result, the optical fiber cord F is attached and fixed to the wire harness H.

In the second use example shown in FIG. 4, the optical fiber cord fixing device 1 is used to fix the optical fiber cord F to the body B of the automobile.

That is, a pair of holes Bh are formed in the body B of the automobile.
Are formed.

After the optical fiber cord F is inserted and held in the cord holding portion 10 in advance, the binding band body 21 is passed from one surface side of the body B through one hole Bh to the other surface of the body B. To the other side of the body B, and then to the one side of the body B through the other hole Bh. Then, the binding band body 21 is pulled and fixed to the band stopper portion 25 at a predetermined position in the longitudinal direction.

As a result, the optical fiber cord F is attached and fixed to the body B.

According to the optical fiber cord fixing device 1 configured as described above, the optical fiber cord F has the holding hole 11.
Since the optical fiber cord F is inserted and held therein, the force for fixing and holding the optical fiber cord F to the member to be attached is dispersed in the entire length direction of the holding hole 11, and The lateral pressure applied to the fiber cord F can be relaxed.

Moreover, since the binding band body 21 extends from the longitudinal middle portion of the cord holding portion 10, the force applied to the binding band body 21 at the time of fixing is surely achieved.
The optical fiber cord F does not act directly on the optical fiber cord F, with the central portion acting in the longitudinal direction.

In particular, the optical fiber cord F is fixed by pulling the binding band body 21 around a member to be attached, for example, the wire harness H or the body B of an automobile and fixing it to the band stopper portion 25. Since it is possible, it has excellent flexibility in mounting location.

As in the optical fiber cord fixing device 1B according to the modification shown in FIG. 5, the optical fiber cord F can be press-fitted to one side of the cord holding portion 10 instead of the cord holding portion 10. You may use the cord holding part 10B of the structure which formed the split groove 12.

In this case, the optical fiber cord F can be pressed into the cord holding portion 10B by pushing the optical fiber cord F into the dividing groove 12 and widening the dividing groove 12, and the optical fiber cord F can be easily inserted and held. You can do it.

In addition, in addition to the above, the above code holding unit 10 is
The optical fiber cord F may be divided into two parts, one end side of which may be connected by a hinge part, and the other side of each part may be engaged and disengaged by a predetermined engaging structure, and the optical fiber cord F may be sandwiched and held by both divided parts. .

{Second Embodiment} Next, an optical fiber cord fixing device 1C according to a second embodiment of the present invention will be described.

As shown in FIG. 6, the optical fiber cord fixing device 1C includes a cord holding portion 10C and a mounting portion 20C.

The cord holding portion 10C is a member having a holding hole 11C formed therein, through which the optical fiber cord F can be inserted and held, and has the same structure as the cord holding portion 10 in the first embodiment. .

The attachment portion 20C is a member that can be attached and fixed to a member to be attached, and in this embodiment, it has a pair of binding band bodies 21C and 25C.

As shown in FIG. 7, the pair of binding band members 21C and 25C are arranged on the wire harness H in a form in which the electric wires W constituting the wire harness H are arranged around the outer peripheral portion of the cord holding portion 10C. It is configured so that it can be bound and fixed.

Specifically, the binding band body 21C is a member in which ridges 22C are formed at appropriate intervals along the longitudinal direction on one side surface of a band-shaped member, and similar to the binding band body 21 described above. It is configured.

Further, the binding band body 25C is composed of the band-like body 26
A band stopper portion 27C having the same structure as the band stopper portion 25 is provided at the tip of C.

Then, as in the first embodiment,
The binding band body 21C is configured to be fixed to the band stopper portion 27C at any position in the longitudinal direction.

This optical fiber cord fixing device 1C can be bound and fixed to the wire harness H as follows.

That is, as shown in FIG. 7, first, the pair of binding bands 21C and 25C is held from both sides by a part of the electric wire Wa (here, one electric wire Wa) constituting the wire harness H. So that the wire W
a is arranged on one side around the outer peripheral portion of the cord holding portion 10C (below the cord holding portion 10C in FIG. 7).

Next, the pair of binding band members 21C,
25C is once crossed and drawn to the other side around the outer peripheral portion of the cord holding portion 10C (the upper side of the cord holding portion 10C in FIG. 7).

The other electric wires Wb (five electric wires Wb in FIG. 7) forming the wire harness H are wound around the other side of the outer peripheral portion of the cord holding portion 10C (the electric wire Wa of the outer peripheral portion of the cord holding portion 10C is The pair of binding band bodies 21C and 25C are wound around the other electric wires Wb so as to be arranged in a portion other than the arranged portion). Finally, the pair of binding band bodies 21C is fixed to the band stopper portion 27C of the binding band body 25C.

As a result, the optical fiber cord F is formed with the electric wires Wa and Wb arranged around the cord holding portion 10C.
Will be fixed to the wire harness H.

According to the optical fiber cord fixing device 1C, it is possible to obtain the effect that the lateral pressure applied to the optical fiber cord F can be relaxed, as in the case of the first embodiment.

Further, in the portion where the optical fiber cord F is fixed to the wire harness H, the electric wires Wa and Wb are arranged around the outer peripheral portion of the optical fiber cord F. A sharp member such as an edge at a location does not come into direct contact with the optical fiber cord, and the optical fiber cord can be protected from an external impact or the like.

[0060]

As described above, according to the optical fiber cord fixing device of the first aspect of the present invention, since the optical fiber cord is inserted and held in the holding hole, the optical fiber cord is attached. The force for fixing and holding the member on the target side is dispersed in the entire length direction of the holding hole, and the lateral pressure applied to the optical fiber cord can be relieved.

According to the second aspect of the present invention, the intermediate portion of the optical fiber cord can be inserted into the holding hole of the cord holding portion through the split groove, and the optical fiber cord can be easily inserted and held.

According to the third aspect of the present invention, the binding band body is drawn around a member to be mounted, such as a wire harness or a car body, and fixed to the band stopper portion. Since the optical fiber cord can be fixed, it has excellent freedom of attachment.

Further, according to the invention described in claim 4, the force for fixing and holding the optical fiber cord is exerted over the entire length direction of the holding hole having a length dimension larger than the width dimension of the binding band body. Can be dispersed.

According to the fifth aspect of the present invention, since a pair of binding band members can be bound and fixed to the wire harness in a form in which each electric wire is arranged around the outer peripheral portion of the cord holding portion, each electric wire can be connected from the outside. It is possible to protect the optical fiber cord from the impact of the.

According to the sixth aspect of the invention, since the respective electric wires are arranged around the outer peripheral portion of the optical fiber cord, the respective electric wires protect the optical fiber cord from an external impact or the like. be able to.

Further, according to the invention described in claim 7, since the respective electric wires are arranged around the outer peripheral portion of the optical fiber cord, the respective electric wires protect the optical fiber cord from an external impact or the like. be able to.

[Brief description of drawings]

FIG. 1 is a perspective view showing an optical fiber cord fixing device according to a first embodiment of the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is a diagram showing a first usage example of the optical fiber cord fixing device.

FIG. 4 is a diagram showing a second usage example of the optical fiber cord fixing device.

FIG. 5 is a front view showing an optical fiber cord fixing device according to a modification.

FIG. 6 is a perspective view showing an optical fiber cord fixing device according to a second embodiment of the present invention.

FIG. 7 is a diagram showing an example of use of the above optical fiber cord fixing device.

[Explanation of symbols]

1,1B, 1C Optical fiber cord fixing device 10, 10B, 10C Cord holding part 11,11C holding hole 12 split grooves 20, 20C mounting part 21,21C, 25C unity band body 25, 27C band stopper B body F optical fiber cord H wire harness W, Wa, Wb electric wire

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) H02G 3/38 H02G 3/28 F (72) Inventor Kazuhiro Asada 1-7 Kikuzumi, Minami-ku, Nagoya-shi, Aichi No. 10 F-term in Auto Network Technology Laboratory Co., Ltd. (reference) 2H038 AA21 CA39 3J022 DA11 EA15 EA32 EB02 EB14 EC02 EC14 EC22 FA05 FB07 FB12 GA02 GA04 GB43 GB45 GB56 5G363 AA16 BA10 DA16 DC02 DC08

Claims (7)

[Claims] 1. An optical fiber cord fixing device for fixing an optical fiber cord to a predetermined member to be attached, the cord holding portion having a holding hole through which the optical fiber cord can be inserted and held. An optical fiber cord fixing device, comprising: a mounting portion provided on the cord holding portion and capable of being mounted and fixed to a member to be mounted. 2. The optical fiber cord fixing device according to claim 1, wherein a split groove into which the optical fiber cord can be press-fitted is formed on one side of the cord holding portion. 3. The optical fiber cord fixing device according to claim 1 or 2, wherein the attachment portion is a binding band body provided so as to extend from the cord holding portion, and the cord holding portion. An optical fiber cord fixing device, comprising: a band stopper portion, which is provided in the band fixing portion and can fix the binding band body. 4. The optical fiber cord fixing device according to claim 1, wherein a length dimension of the holding hole is larger than a width dimension of the binding band body. Cord fixing device. 5. The optical fiber cord fixing device according to claim 1 or 2, wherein the attaching portion is a form in which each electric wire forming a wire harness is arranged around an outer peripheral portion of the cord holding portion. An optical fiber cord fixing device having a pair of binding band members that can be bound and fixed to the wire harness. 6. The method of binding and fixing the optical fiber cord fixing device according to claim 5, wherein the wires forming the wire harness are arranged around the outer periphery of the cord holding portion. A method for binding and fixing an optical fiber cord fixing device, in which a band body is bound and fixed to the wire harness. 7. The method for binding and fixing an optical fiber cord fixing device according to claim 5, wherein the pair of binding bands are wrapped around a part of the electric wires constituting the wire harness so as to be held from both sides. Then, the part of the electric wire is arranged on one side of the outer peripheral portion of the cord holding portion, and the pair of binding bands are crossed once and pulled out to the other side of the outer peripheral portion of the cord holding portion, and the wire harness is attached. The pair of binding band bodies are fixed by winding the pair of binding band bodies around the other side of the cord holding portion around the other side of the cord holding portion so as to be wound around the other wires. A method for binding and fixing an optical fiber cord fixing device.