JP2009282177A - Bent boot for optical connector - Google Patents

Bent boot for optical connector Download PDF

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Publication number
JP2009282177A
JP2009282177A JP2008132673A JP2008132673A JP2009282177A JP 2009282177 A JP2009282177 A JP 2009282177A JP 2008132673 A JP2008132673 A JP 2008132673A JP 2008132673 A JP2008132673 A JP 2008132673A JP 2009282177 A JP2009282177 A JP 2009282177A
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JP
Japan
Prior art keywords
bent
boot
optical cable
optical
cable
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2008132673A
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Japanese (ja)
Inventor
Hideyuki Shimizu
Yasuhiro Watanabe
秀之 清水
靖弘 渡辺
Original Assignee
Okano Densen Kk
Sanwa Denki Kogyo Co Ltd
三和電気工業株式会社
岡野電線株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Okano Densen Kk, Sanwa Denki Kogyo Co Ltd, 三和電気工業株式会社, 岡野電線株式会社 filed Critical Okano Densen Kk
Priority to JP2008132673A priority Critical patent/JP2009282177A/en
Publication of JP2009282177A publication Critical patent/JP2009282177A/en
Application status is Pending legal-status Critical

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Abstract

<P>PROBLEM TO BE SOLVED: To provide a bent boot for optical connector capable of easily attached to/detached from an optical cable and preventing attenuation, breakage, and the like, of an optical fiber in the optical cable during attachment work, by allowing it to be bent into a radius of a curvature which is not smaller than the minimum bending radius, after the attachment to the optical cable. <P>SOLUTION: A bent boot body 1 of the bent boot for optical connector surrounding the outer circumference of an optical cable P for protection is formed of a clamp structure of a substantially C-shaped cross-section, including an optical cable introducing slit 4 along the axial direction on its side face, and includes therein a bendable shape-retainable line material 2 for retaining shape in the axial direction. The bent boot body has flexibility such that it is bendable at a radius of curvature which is not smaller than the minimum bending radius of the optical cable P. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a bent boot for optical connectors for surrounding and protecting the outer periphery of an optical cable of an optical connector.

As shown in FIG. 11, after the optical connector is connected to the optical communication device, when the optical communication device door is closed, the optical cable is pushed by the door and excessive bending occurs, exceeding the limit of the minimum bending radius of the optical cable. As a result, communication may be hindered or the optical cable may be destroyed.
In addition, after the optical connector is connected to the optical communication device, the optical cable sticks out of the frame of the communication device, so that the optical cable may be caught and destroyed.

  Therefore, conventionally, as disclosed in Patent Document 1, an optical fiber cable guide for allowing the optical fiber cable to be bent and installed can be used to prevent excessive bending of the cable. Yes. That is, the optical fiber cable guide has an elongated member that is bent along a length with a radius of curvature not smaller than the minimum bending radius of the optical fiber cable and guides the optical fiber cable in a desired direction. The member extends from the first end to the second end, the first end, the second end, the intermediate portion between the first end and the second end, and the light from the first end to the second end. A fiber cable and a channel for receiving a strain relief boot. The first end is removably attached to the strain relief boot and the second end extends from the second end to release at least the fiber optic cable within the channel relative to the elongated member. Having at least one first securing element configured to be held in a possible manner. The first fixing element is configured such that the optical fiber cable is released from the first fixing element when the optical fiber cable is pulled away from the bottom of the channel.

In addition, as disclosed in Patent Document 2 to Patent Document 6, the fiber optic cable is bent so that the limit of the minimum bending radius of the fiber optic cable is not exceeded, and the fiber optic cable is connected to other components. Various types of guides have been developed.
JP 2002-357552 A US Pat. No. 6,134,370 US Pat. No. 5,710,851 US Pat. No. 5,640,476 US Pat. No. 5,347,603 US Pat. No. 5,037,175

  However, since the conventional optical fiber cable guide is plastically bent in advance so as to have a curvature radius not smaller than the minimum bending radius of the optical fiber cable, it is very difficult to attach and detach the guide from the cable. It will be a thing. That is, since it is necessary to attach the cable along the curvature of the guide that is bent, it is very troublesome, and there is a risk that the optical fiber in the cable may be attenuated or broken.

  Therefore, the present invention has been devised in view of the conventional circumstances as described above, and can be easily attached to and detached from the optical cable and has a curvature not smaller than the minimum bending radius after being attached to the optical cable. By bending it so that it has a radius, it is possible to prevent attenuation or breakage of the optical fiber in the optical cable during installation work, and it can be easily retrofitted to the boots of conventional optical connectors. Moreover, it is an object to provide a bent boot for an optical connector that can be used as a single boot.

  In order to solve the above-described problems, the present invention is a bent boot for optical connectors for surrounding and protecting the outer periphery of an optical cable, and the bent boot main body introduces the optical cable along the axial direction on the side surface thereof. It is formed in a clamp structure having a substantially C-shaped cross section having a slit for use, and has a shape retaining wire that can be bent and held in the axial direction.

  Further, the bent boot main body is formed to have a flexibility capable of bending to a curvature radius not smaller than the minimum bending radius of the optical cable.

  According to the present invention, it can be easily attached to and detached from an optical cable, can be easily retrofitted to a conventional optical connector boot, and can be used as a single boot. In addition, after being attached to the optical cable, the optical fiber in the optical cable can be prevented from being attenuated or broken during the mounting operation by being bent so as to have a curvature radius not smaller than the minimum bending radius.

  That is, according to the present invention, since the optical fiber can be bent and held freely within the range of 0 degrees to 90 degrees that is a linear state, the extension direction of the optical cable from the boot is either upward or downward. It can be easily changed. Also, since the bent boot body is flexible enough to bend to a radius of curvature that is not smaller than the minimum bending radius of the optical cable, the bent boot body is attached while the optical cable is in a straight state, and the bent boot body is attached after installation. Is bent to a radius of curvature not smaller than the minimum bending radius of the optical cable, it is possible to prevent attenuation or breakage of the optical fiber in the optical cable during the mounting operation.

  More specifically, since the bent boot body is formed in a substantially C-shaped cross-sectional clamp structure having an optical cable introduction slit along the axial direction on the side surface thereof, the boot of the conventional optical connector even after assembly of the optical connector. Can be easily retrofitted with one-touch operation. In addition to LC plugs, SC plugs, etc., it can be easily used for double LC plugs, double SC plugs, and the like.

  In addition, the bent boot body has a built-in shape retaining wire that can be bent and held in the axial direction. Therefore, when the bent boot body is bent to a radius of curvature that is not smaller than the minimum bending radius of the optical cable, a universal ruler Thus, the bent shape can be maintained at all times.

  In addition, when the bent boot body is arranged vertically, for example, if it is fixed at 90 degrees, it is necessary to take a sufficient interval between the adapters, but in this bent boot body incorporating a shape retaining wire that can be bent and held freely, By changing the bending degree of each bent boot body, high-density mounting of the optical connector is possible with respect to each adapter that is vertically adhered.

  Further, when the bent boot main body according to the present invention is used as a single boot, the change in the direction of the extension direction of the optical cable from the optical connector and the holding thereof can be performed quickly and reliably by one-touch operation without the optical cable being pulled. .

The best mode for carrying out the bent boot for optical connectors according to the present invention will be described below in detail with reference to the drawings.
As shown in FIGS. 1 to 4, the bent boot body 1 for the optical connector Q according to the present invention is formed in a clamp structure having a substantially C-shaped cross section and has a curvature radius not smaller than the minimum bending radius of the optical cable P. A shape-preserving wire 2 that is bendable and can be bent and held is built in the axial direction.

  That is, the bent boot main body 1 is a long cylindrical body having a substantially trapezoidal cross section in the lateral direction as shown in FIGS. 1 (a), 1 (b), 3 (a) to 3 (h). Since the plurality of cut portions 3 are formed in parallel with each other at a vertically symmetrical position, the bent boot body 1 itself can be bent in either the vertical direction (FIG. 2A). 2 (b)).

  Further, as shown in FIGS. 1A, 1B, 3C, and 3E, a slit 4 for introducing an optical cable is provided on the side surface of the long cylindrical body along the axial direction thereof. Is formed and communicated with the internal optical cable insertion hole 5. The optical cable insertion hole 5 and the optical cable introduction slit 4 are partly widened at the front end side, and the front end side of the optical cable insertion hole 5 is a boot fitting portion 6. And the existing boot R of the optical connector Q is inserted in this boot fitting part 6 (refer FIG.1 (c)).

  In this case, as shown in FIGS. 6 (a), 6 (b), 6 (c) and 6 (d), the optical cable insertion hole 5 is inserted into the bent boot body 1 through the optical cable introduction slit 4. After the optical cable P is introduced, as shown in FIGS. 7A, 7B, 7C, and 7D, the bent boot body 1 is bent downward, for example, from a straight state. 8 (a) and 8 (b), the boot body 1 is slid along the optical cable P to the existing boot R side of the optical connector Q so that the boot fitting portion 6 has the boot. The bent boot main body 1 is assembled in three stages in which R is inserted.

  Further, as shown in FIGS. 1 (a), 1 (b), 3 (c), 3 (e), 3 (g), and 3 (h), on the front end side of the long cylindrical body. A rectangular hole-shaped insertion portion 7 is formed adjacent to the optical cable insertion hole 5, and a shape-preserving wire 2 such as a rod-shaped steel wire is inserted into the insertion portion 7. At this time, as shown in FIGS. 3C and 3F, the insertion portion 7 is closed on the rear end side of the long cylindrical body.

  Therefore, when the bent boot body 1 is bent from the state shown in FIG. 4 (a) to the state shown in FIG. 4 (b), the shape retention of the steel wire in which the bent shape is the shape retaining wire 2. Maintained by.

  Further, as shown in FIG. 1 (c), when the bent boot body 1 is bent from the straight state in which the optical cable P is introduced into the optical cable insertion hole 5 from the optical cable introduction slit 4, it is shown in FIG. 2 (c). Thus, the opening of the slit 4 for introducing the optical cable is crushed by the bending force, thereby enhancing the gripping property of the optical cable P.

  5 shows an example in which the bent boot body 1 is attached to each optical cable P such as a double LC plug or a double SC plug. In this case, the left and right bent boot bodies 1 are sandwiched between the optical cables P from the outside. The optical cables P are introduced into the optical cable insertion holes 5 with the optical cable introduction slits 4 facing each other. Then, the bent boot body 1 is bent along the optical cable P and slid to the existing boot R side of the optical connector Q, and the boot R is fitted into the boot fitting portion 6.

  Next, an example of assembly, use, and operation of the best mode of the bent boot for optical connectors according to the present invention configured as described above will be described in detail.

  First, in the first stage, as shown in FIGS. 6 (a), 6 (b), 6 (c) and 6 (d), the optical cable is inserted through the optical cable introducing slit 4 of the bent boot body 1. An optical cable P is introduced into the hole 5. At this time, the bent boot body 1 remains in a straight state.

  In the second stage, as shown in FIGS. 7 (a), 7 (b), 7 (c), and 7 (d), the curved boot body 1 is bent downward, for example, from a straight state. At this time, as shown in FIGS. 7 (c) and 7 (d), the opening of the slit 4 for introducing the optical cable is crushed by the bending force, thereby improving the gripping property of the optical cable P.

  In the third stage, as shown in FIGS. 8A and 8B, the boot fitting portion 6 is formed by sliding the bent boot body 1 along the optical cable P toward the existing boot R side of the optical connector Q. The boot R is inserted into the.

  As shown in FIG. 9, when an adapter S for connecting various optical communication devices to a panel having a door on the front is installed, the optical connector plug is first attached to the adapter S after the door is opened. After the connection, the bent boot body 1 is attached to the optical cable P, and the bent boot body 1 is bent so as to have a curvature radius not smaller than the minimum bending radius of the optical cable P.

  Then, by sliding the bent boot body 1 along the optical cable P to the existing boot R side of the optical connector Q, the boot R is fitted into the boot fitting portion 6 and then the door is closed. At this time, the optical cable P is not pushed by the door but is bent in front and bent while being guided by the boot body 1, so that the optical cable P is not bent with a radius of curvature larger than the minimum bending radius due to the pressure on the door. is there.

  By the way, the bent boot for optical connectors according to the present invention can mount the optical connectors Q on the adapters S arranged in close contact with each other at high density. That is, as shown in FIGS. 10 (a), 10 (b), and 10 (c), light is obtained by changing the bending degree of each bent boot body 1 with respect to the adapter S arranged in close contact with each other vertically. The connector Q can be mounted at high density.

  In addition, although the bending boot for optical connectors which concerns on this invention becomes a structure which can be attached or detached with respect to the existing boot R, it may be integrated with respect to the said boot R. Further, the bent boot body 1 may be used as a single boot. That is, the existing boot R itself may be improved so as to have the same configuration as the bent boot body 1.

An example of the bending boot main body in the best form for implementing this invention is shown, (a) is the perspective view seen from the steel wire insertion side, (b) is the perspective view seen from the slit 4 side for optical cable introduction, ( c) is a perspective view of the state of sliding mounting on the boot side, as viewed from the slit 4 for introducing the optical cable. Similarly, it shows a state where the bent boot body is bent, (a) is a perspective view as seen from the insertion portion side of the shape-retaining wire, (b) is a perspective view as seen from the optical cable introduction slit 4 side, and (c) is the boot. It is the perspective view which looked at the state made to slide-mount to the side from the slit 4 for optical cable introduction. Similarly, an example of a bent boot body is shown, (a) is a plan view, (b) is a side view, (c) is a cross-sectional view taken along line AA of (a), (d) is a bottom view, and (e) is a front view. , (F) is a rear view, (g) is a BB sectional view of (b), and (h) is a CC sectional view of (b). Similarly, it shows a state in which the shape-retaining wire is inserted into the insertion part of the bent boot body, (a) is a sectional view in a non-bent state, and (b) is a sectional view in a bent state. An example in which the bent boot body is used for a double LC connector is shown, (a) is a plan view of the bent boot body in a bent state, (b) is a sectional view taken along DD of (a), and (c). Is a side view. It shows an example of use of a bent boot body, (a) is a plan view showing a state of being inserted into a cable, (b) is also a rear view, (c) is a plan view showing a state of being inserted into a cable, (b) Is a rear view. Similarly, it shows an example of use of a bent boot body, (a) is a side view showing a state of bending the bent boot body inserted into the cable, (b) is a front view, and (c) is a state of bending the bent boot body. (D) is a front view of the same. Similarly, it shows an example of use of a bent boot body, (a) is a side view showing a state in which the bent boot body inserted into the cable is slid to the boot side, and (b) is a state in which the bent boot body is slid to the boot side. FIG. It is explanatory drawing which shows the usage example of a curved boot main body similarly. Similarly, it shows another example of use of the curved boot body, (a) is a plan view of the bent boot body, (b) is a sectional view taken along line EE of (a), and (c) is a side view. is there. It is explanatory drawing of the optical connector in a prior art example.

Explanation of symbols

P Optical cable Q Optical connector R Boot S Adapter 1 Curved boot body 2 Shape retaining wire 3 Cut section 4 Optical cable introduction slit 5 Optical cable insertion hole 6 Boot fitting section 7 Insert section

Claims (2)

  1.   A bent boot for an optical connector for surrounding and protecting the outer periphery of an optical cable, wherein the bent boot body is formed in a substantially C-shaped clamp structure having a slit for introducing an optical cable along an axial direction on a side surface thereof. And a bent boot for an optical connector, wherein a shape-preserving wire that can be bent and held is incorporated in the axial direction.
  2.   The bent boot for an optical connector according to claim 1, wherein the bent boot body is formed to have a flexibility that can be bent to a radius of curvature not smaller than a minimum bending radius of the optical cable.
JP2008132673A 2008-05-21 2008-05-21 Bent boot for optical connector Pending JP2009282177A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2008132673A JP2009282177A (en) 2008-05-21 2008-05-21 Bent boot for optical connector

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JP2008132673A JP2009282177A (en) 2008-05-21 2008-05-21 Bent boot for optical connector

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010061011A (en) * 2008-09-05 2010-03-18 Hakusan Mfg Co Ltd Optical connector boot and optical connector using the same
CN102295190A (en) * 2010-06-23 2011-12-28 村田机械株式会社 Power cable holding structure
JP2014164295A (en) * 2013-02-22 2014-09-08 Shinko Giken Kk Protective member of optical fiber
JP2016024254A (en) * 2014-07-17 2016-02-08 中国電力株式会社 Optical cord protection tube
JP2016206340A (en) * 2015-04-20 2016-12-08 株式会社フジクラ Attachment, optical fiber connector and optical connector

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5860712A (en) * 1981-10-06 1983-04-11 Sumitomo Electric Ind Ltd Plug with boot
JPS61126201U (en) * 1985-01-28 1986-08-08
JP2002357752A (en) * 2001-03-28 2002-12-13 Corning Cable Systems Llc Optical fiber cable guide
JP2005189332A (en) * 2003-12-24 2005-07-14 Three M Innovative Properties Co Optical connector, optical fiber with connector, optical fiber connecting apparatus and method for connecting optical fiber

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5860712A (en) * 1981-10-06 1983-04-11 Sumitomo Electric Ind Ltd Plug with boot
JPS61126201U (en) * 1985-01-28 1986-08-08
JP2002357752A (en) * 2001-03-28 2002-12-13 Corning Cable Systems Llc Optical fiber cable guide
JP2005189332A (en) * 2003-12-24 2005-07-14 Three M Innovative Properties Co Optical connector, optical fiber with connector, optical fiber connecting apparatus and method for connecting optical fiber

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010061011A (en) * 2008-09-05 2010-03-18 Hakusan Mfg Co Ltd Optical connector boot and optical connector using the same
CN102295190A (en) * 2010-06-23 2011-12-28 村田机械株式会社 Power cable holding structure
JP2012006433A (en) * 2010-06-23 2012-01-12 Murata Machinery Ltd Power supply line holding structure
KR101455297B1 (en) * 2010-06-23 2014-10-27 무라다기카이가부시끼가이샤 Power supply line holding structure
JP2014164295A (en) * 2013-02-22 2014-09-08 Shinko Giken Kk Protective member of optical fiber
JP2016024254A (en) * 2014-07-17 2016-02-08 中国電力株式会社 Optical cord protection tube
JP2016206340A (en) * 2015-04-20 2016-12-08 株式会社フジクラ Attachment, optical fiber connector and optical connector

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