JP4851430B2 - Optical connector - Google Patents

Description

  The present invention relates to an optical connector, and more particularly to an on-site assembly type optical connector assembled on site.

  Various locally assembled optical connectors that can be assembled locally have been proposed. In this type of optical connector, the ferrule end incorporating the optical fiber is already polished. Another optical fiber end is pre-processed on site, and this other optical fiber end is pressed against and connected to the optical fiber end of the ferrule polishing end.

The optical fiber connected locally is, for example, an optical fiber strand taken out from an optical cable installed in the aerial, a single-core cable reinforced with a jacket used to connect between the aerial and the premises in the field, or There are small cables.
When connecting to a single-core cable or a small-core cable reinforced with the latter jacket, connect the tip of the optical fiber from which the jacket has been removed to the optical fiber connector built in the optical connector. The portion at the time of peeling off is attached to a dedicated cable gripping member or the like to be fixed in the optical connector and arranged at a predetermined position in the optical connector.

  An optical connector assembled locally is connected to a similar optical connector assembled in the field, such as an optical connector assembled in a factory, or an SC connector, but one or both optical connectors are preliminarily attached to the connection end face of the ferrule. It is pressed and urged by the compression force of the built-in coil spring. At this time, the ferrule on the side incorporating the coil spring is backed in the housing of the optical connector.

As a technique related to the field assembly type optical connector, Patent Document 1 can be cited.
In order to connect the optical fiber cores, the end surface of the optical fiber core wire to be newly inserted and connected to the optical connector and the end surface of the internal optical fiber core wire built in the optical connector in advance Are in contact with each other, so that both optical fibers are optically connected (see, for example, Patent Document 1).
JP-A-10-206688

However, in the case of a conventional field assembly type optical connector connected to an optical cable, the fixing portion (cable gripping member) of the cable jacket cannot be moved back in conjunction with the ferrule, so that the optical fiber is bent inside the optical connector. As a result, optical characteristics are deteriorated due to bending of the optical fiber.
In order to prevent the bending of the optical fiber, it is necessary that the optical fiber connecting member and the gripping member that grips the optical cable or the optical fiber are interlocked along the axial direction. The structure which connects a jacket holding member to a part is requested | required.

However, as described above, it may be connected to an optical fiber. Conventionally, the structure of the optical fiber connecting member suitable for the optical cable to be applied has been used, but it is necessary to manage both the connection cable of one type of optical fiber and the strand of the optical fiber in terms of manufacturing management. It is preferable in terms of cost reduction.
Accordingly, an object of the present invention is to provide an optical connector that can be applied to connection of both an optical cable and an optical fiber without causing the optical fiber to bend.

In order to solve the above problems, an optical connector according to the present invention includes a ferrule incorporating a first optical fiber, a gripping part for gripping a second optical fiber, and the ferrule fixed to one end side. An optical fiber connecting part for connecting one optical fiber and the second optical fiber to face each other, and a housing member for accommodating an assembly of the ferrule and the optical fiber connecting part so as to be movable in the axial direction against an urging force And a connecting member for connecting the other end side of the optical fiber connecting part and the gripping part, wherein the ferrule, the assembly of the optical fiber connecting part and the gripping part can be interlocked with each other. A cable gripping member for gripping an optical cable having the second optical fiber and a jacket covering the second optical fiber. A case on which the gripping member is placed and a cover for closing the case, and the connecting member has an assembly of the optical fiber connecting component and a pin inserted from the outside into the gripping portion to connect the two. to which the ferrule and the assembly and the grip portion of the ligated the optical fiber connection component, one end of the movable der Ri said housing member in conjunction with the prior SL-axis direction relative to the housing member is the inserted inside the grip portion, the pin of the coupling member is characterized that you have been the connection and the grip portion is an assembly of the fiber connection part through a through hole provided in the housing member.

The optical connector of the present invention is preferably characterized in that the pin can be removably inserted from the outside of the assembly of the optical fiber connecting component and the gripping portion.

The optical connector of the present invention is preferably characterized in that the urging member is disposed between the other end portion side of the optical fiber connecting component and the stopper of the housing member.
In the optical connector according to the present invention, preferably, the optical fiber connection component includes a connection base that holds the second optical fiber, a lid that is disposed facing the connection base, and a housing member. A clamp member that presses the connection base and the lid in a combined state,
The lid has a first protrusion, the connection base has a second protrusion, and the contact surface of the first protrusion that contacts the clamp member and the contact of the second protrusion that contacts the clamp member The surface is formed in an arc shape with the center of the second optical fiber as a central axis.
The optical connector of the present invention preferably has a wedge inserted between the connection base and the lid in order to fix the connection base and the lid in the housing member,
As for the 1st contact of the contact surface of the said clamp member and the said 1st protrusion, and the 2nd contact of the contact surface of the said clamp member and the said 2nd protrusion, the said wedge is arrange | positioned from the centerline of the said housing member. It is shifted to the position side.

  INDUSTRIAL APPLICABILITY According to the present invention, the present invention can be applied to the connection of both an optical cable and an optical fiber element without causing bending of the optical fiber.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a perspective view showing a preferred embodiment of the optical connector of the present invention.
An optical connector 10 shown in FIG. 1 has an outer housing 11 and an optical fiber gripping portion 12. The ferrule 20 protrudes from the internal space of the outer housing 11.
2 is a perspective view of the optical connector 10 shown in FIG. 1 as seen from the opposite direction. FIG. 3 is a perspective view of the optical connector 10 shown in FIG. It is a perspective view which shows the state in which the housing member 88 in the inside was exposed.

  As shown in FIGS. 1 and 2, the outer housing 11 is a rectangular parallelepiped box member having a hollow portion that is optically connected by an operator with a finger. The optical fiber gripping part 12 and the cover 13 are rectangular parallelepiped box members having hollow parts.

  The outer housing 11 and the optical fiber gripping portion 12 shown in FIGS. 1 and 2 are molded of plastics with different colors, for example, so that the components can be reliably distinguished visually. As shown in FIGS. 1 and 2, the outer housing 11 has a concavo-convex gripping part 11 </ b> B so that the operator does not slip even if it is held by a finger.

The outer housing 11 shown in FIGS. 1 and 2 has a space having a rectangular cross section along the axial direction L, and has an opening 11C at one end and an opening 11D at the other end. have. The end of the ferrule 20 protrudes from the opening 11C.
As shown in FIG. 3, when the outer housing 11 is removed from the optical connector 10, the housing member 88 that houses the optical fiber connection member 40 and the coupling member 30 are exposed.

  4 (A) and 4 (B) are side views of the optical connector 10 shown in FIG. 2 as viewed from the arrows Y2 and Y3. FIG. 5 is a plan view of the optical connector 10 of FIG. 3 as viewed from the arrow Y1, but in FIG. 5, the cover 13 of FIG. 3 is removed. 6 is a cross-sectional view taken along line AA of the optical connector 10 of FIG.

The internal structure of the optical connector 10 will be described with reference to FIGS.
The optical connector 10 shown in FIG. 6 includes an optical fiber gripping part (an example of a gripping part) 12, a plug frame 14, an optical fiber connection component 40, an inner housing member 88, a connecting member 30, and a spring (biasing force). An example of a member) 63 is provided. 5 and 6, the illustration of the outer housing 11 shown in FIG. 1 is omitted for simplification of the drawing.

As shown in FIG. 6, the optical fiber gripping portion 12 and the optical fiber connection component 40 are coupled along the axial direction L via the coupling member 30.
The plug frame 14 is a plastic molded product having a space penetrating inside. The inner space 14C of the plug frame 14 includes most of the ferrule 20, a part of the optical fiber connecting component 40, and a part of the inner housing member 88. Is housed.

As illustrated in FIG. 6, the optical fiber gripping portion 12 includes a case 19, a cable gripping member 28, and a cover 13 (see FIG. 2). In FIG. 6, the cover 13 is indicated by a broken line in order to show the inside of the optical fiber gripping portion 12.
The case 19 of the optical fiber gripping portion 12 has a connection main body portion 60 and an extension portion 61 formed to extend from the connection main body portion 60. The connection main body 60 has a connection end 62. The inner housing member 88 is a plastic cylindrical member. One end portion of the inner housing member 88 is disposed in the plug frame 14, and the other end portion of the inner housing member 88 is accommodated and held in the connection end portion 62.

  For example, a coil spring is employed as the spring 63 shown in FIG. 6, and the spring 63 is disposed on the inner housing member 88. The spring 63 is disposed between the connection end 45 of the optical fiber connection component 40 and the stopper 64 of the inner housing member 88 to apply pressure to the optical fiber connection component 40 along the axial direction L. Has been.

  As shown in FIGS. 6 and 5, the cable gripping member 28 is disposed on the extension portion 61 of the optical fiber gripping portion 12. The cable gripping member 28 holds the end portion of the cable fiber 100 from which the jacket 101 has been peeled off. The cable fiber 100 shown in FIG. 6 has a jacket 101 and an optical fiber 102. The optical fiber 102 exposed by removing the jacket 101 is passed through the through hole 60H of the connection main body 60. The optical fiber connection component 40 is held along the axial direction L by the V-groove 300.

  The tip portion 110 of the optical fiber 102 shown in FIG. 6 is optically connected to one end portion 201 of the optical fiber 200 built in the ferrule 20 by abutting within the connection base 80. The other end 202 of the optical fiber 200 built in the ferrule 20 is exposed to the outside from the plug frame 14. Thus, the optical connector 10 is connected in a state where the optical fiber 102 of the cable fiber 100 and the optical fiber 200 built in the ferrule 20 are arranged along the axial direction L. The optical fiber 200 built in the ferrule 20 is a first optical fiber, and the optical fiber 102 from which the jacket has been removed is a second optical fiber.

  As illustrated in FIG. 2, for example, the other end 202 of the optical fiber 200 incorporated in the ferrule 20 can be connected by abutting against the end 1002 of the optical fiber 1001 of another optical connector 1000. Yes.

  The optical fiber connecting part 40 is a plastic part having a substantially circular cross section, and the ferrule 20 is a thin cylindrical plastic member as compared with the optical fiber connecting part 40. The connection main body portion 60 of the optical fiber gripping portion 12 and the optical fiber connection component 40 are detachably connected by the pin 31 of the connection member 30 and are interlocked with each other along the axial direction L.

  FIG. 7 shows an example of the shape of the optical fiber connecting part 40 and the ferrule 20, FIG. 7A is a front view of the optical fiber connecting part 40 and the ferrule 20, and FIG. It is the side view which looked at the optical fiber connection component 40 and the ferrule 20 of (A) from the F direction, and FIG.7 (C) is in the GG line of the optical fiber connection component 40 and the ferrule 20 of FIG. It is sectional drawing.

  As shown in FIG. 7, the optical fiber connection component 40 includes a plastic connection base 80, two plastic lids 81 and 82, and a metal clamp member 83. As shown in FIG. 7C, one end 20 </ b> B of the ferrule 20 is inserted and fixed to the connection end 70 of the connection base 80.

FIG. 8 and FIG. 9 show each component of the optical fiber connection component 40 and the assembly procedure thereof.
8A shows a state before the connection base 80, the lids 81 and 82, and the clamp member 83 are assembled, and FIG. 8B shows a state where the lid 82 is arranged with respect to the connection base 80. Is shown. 9A shows a state in which the lids 81 and 82 are arranged with respect to the connection base 80, and FIG. 9B shows an assembly of the connection base 80 and the lids 81 and 82 with the clamp member. A state of being held by 83 is shown.

  As shown in FIG. 8A, the connection base 80 is a member that is halved along the axial direction L. A first connection end 70 is formed at one end and a first connection end 70 is formed at the other end. Two connection end portions 45 are formed. A V-groove 300 is formed along the axial direction L between the first connection end 45 and the second connection end 70. This V-groove 300 is a groove having a V-shaped cross section for holding the optical fiber 102 shown in FIG.

  As shown in FIG. 8A, the lids 81 and 82 are members having a cross-section in cross section and have substantially the same length along the axial direction L. As shown in FIGS. 8B and 9A, the lids 81 and 82 are disposed on the connection base 80 so as to face each other, thereby closing the connection base 80. The lids 81 and 82 have protrusions 81D and 82D, respectively. As shown in FIG. 8A, the connection base 80 has a protrusion 80D.

  As shown in FIG. 8A, the clamp member 83 is an elastically deformable member having an arc-shaped cross section, and has inset portions 83B and 83C. As shown in FIGS. 9A and 9B, the fitting portions 83B and 83C sandwich the protrusions 81D and 82D of the lids 81 and 82 and the outer peripheral surface of the connection base 80, respectively, so that the clamp member 83 fixes the lids 81 and 82 and the connection base 8 by sandwiching them.

  Then, the optical fiber connecting component 40 shown in FIG. 9B is inserted into the inner housing member 88 as shown in FIG. 9B and FIG. It abuts against one end of the spring 63. The stopper 64 of the housing member 88 holds the other end of the pressurizing spring 63. The holding state of the spring 63 is also shown in FIGS. The housing member 88 has a long guide hole 89 along the axial direction L. Further, as shown in FIG. 9B, the second connection end 45 is formed with recesses 99 and 99. Thereby, the assembly of each component of the optical fiber connection component 40 and the assembly of the optical fiber connection component 40 and the inner housing member 88 are completed.

  FIG. 10 shows the connection end 62 of the connection main body 60 of the optical fiber gripping part 12, the optical fiber connection component 80, the inner housing member 88, the plug frame 14, and the connecting member 30. Therefore, a connection structure between the connection end 62 of the connection main body 60 of the optical fiber gripping part 12 and the optical fiber connection component 80 will be described.

  The connecting member 30 is made of an elastically deformable plastic and includes a base portion 31B and two L-shaped pins 31 and 31. The pins 31 and 31 have protrusions 31T and 31T, respectively, and the protrusions 31T and 31T face each other.

  As shown in FIG. 10A, through holes 85 are formed in one surface and the other surface of the connection end portion 62 of the connection main body portion 60. On the other hand, the connection base 80 has recesses 99, 99. Therefore, as shown in FIGS. 10A and 10B, the pins 31 and 31 of the connecting member 30 pass through the through hole 85 and the guide hole 89 of the inner housing member 88, respectively, to connect to the connection base. It is inserted into 80 recesses 99, 99.

  Thereby, the connection end part 62 of the connection main body part 60 of the optical fiber gripping part 12 and the optical fiber connection part 40 are connected using the connection member 30. The assembly of the optical fiber connecting part 40 and the ferrule 20 and the optical fiber gripping part 12 are pressed against the inner housing member 88 and the plug frame 14 along the axial direction L against the biasing force of the spring 63. Can be moved.

Next, a structural example of the optical fiber connecting member 40 will be further described with reference to FIG.
FIG. 12 shows an example of a cross-sectional structure taken along line BB of the optical fiber connecting member 40 and the housing member 88 in FIG.
FIG. 12 shows the connection base 80, the lids 81 and 82, the clamp member 83, and the housing member 88 already shown in FIGS. The clamp member 83 having a C-shaped cross section is fixed in a state in which the connection base 80 and the lids 81 and 82 face each other.

  As shown in the enlarged portion H of FIG. 12, a V-groove 300 is formed at the center position on the inner surface side of the connection base 80. The inner surfaces of the lids 81 and 82 facing the V groove 300 are flat surfaces. Thereby, the connection part of the one end part 201 of the 2nd optical fiber 102 and the optical fiber 200 is positioned in this V groove 300 in the position where center line S1 and center line S2 orthogonal to this center line S1 cross | intersect. Has been.

  As shown in the enlarged portion J of FIG. 12, the projections 81D and 82D of the lids 81 and 82 have arc-shaped first contact surfaces 221. The first contact surface 221 is a portion that contacts the first pressing portion 83T of the clamp member 83, and the first contact surface 221 and the inner surface of the first pressing portion 83T are in contact with each other at the first contact point 221P.

  Similarly, as shown in the enlarged portion K in FIG. 12, the connection base 80 has an arc-shaped second contact surface 222. As shown in the enlarged portion K, the second contact surface 222 is a portion that contacts the second pressing portion 83R of the clamp member 83, and the second contact surface 222 and the inner surface of the second pressing portion 83R are the second contact points. Abuts at 222P. The first contact surface 221 and the second contact surface 222 are formed in an arc shape with the center of the second optical fiber 102 as the central axis.

  As shown in FIG. 12, both the first contact 221P and the second contact 222P are set slightly shifted in the W direction as compared to the center line S1. Moreover, since the arc-shaped first abutting portion 221 and the arc-shaped second abutting portion 222 are employed, the lids 81 and 82 and the connection base 80 are connected to the first contact 221P and the second contact 222P. And clamped by the clamp member 83.

  Accordingly, the force applied from the first contact 221P to the second optical fiber 102 can be indicated by an arrow C1, the force applied from the second contact 222P to the second optical fiber 102 can be indicated by an arrow C2, and the arrows C1 and C2 can be expressed as The force applied to the second optical fiber 102 can be dispersed compared to applying a load from the opposite direction along the center line S1, because it is shifted in the W direction compared to the center line S1. It is possible to efficiently apply a load to the second optical fiber 102.

  In addition, as shown by the enlarged portion R in FIG. 12, the wedge member 500 is press-fitted into the space 131 between the lids 81 and 82 and the connection base 80, whereby the clamp member 83 is connected to the lids 81 and 82 and the connection base. The base 80 can be more securely fixed in the inner housing member 88.

  The first connection end 201 of the first optical fiber 200 of the ferrule 200 shown in FIG. 6 is bare as it is, but the first connection end 201 is very easy to chip, and the lids 81 and 82 are pivoted. It has been found that this is noticeably caused by shifting along the direction L.

  However, as shown in FIG. 12, in the embodiment of the present invention, the first contact point 221P and the second contact point 222P are set so as to be shifted toward the wedge 500 side, so that the lateral components F1 and F2 of the force can be generated. Even if the wedge 500 is press-fitted, the lids 81 and 82 can be pressed by the clamp member 83 without being displaced with respect to the connection base 80. Therefore, no extra force is applied to the abutting state between the first connection end 201 of the first optical fiber 200 and the connection end 110 of the second optical fiber 100 of the ferrule 200 shown in FIG. It is possible to prevent the first connection end 201 of the fiber 200 from being lost.

Next, an assembly example of the optical connector 10 will be described with reference to FIGS.
In FIG. 13, each component of the optical connector 10 is shown, and the outer housing 11, the plug frame 14, the optical fiber connecting member 40, the inner housing member 88, the spring 63, and the optical fiber gripping portion 12 are shown.

  In FIG. 13, as shown in FIG. 9B, the assembly of the connection base 89, the lids 81 and 82, and the clamp member 83 is inserted into the inner housing member 88, so that it is shown in FIG. 14. Thus, an assembly of the optical fiber connecting component 40 and the inner housing member 88 is formed.

  14 and FIG. 15, the assembly of the optical fiber connecting component 40 and the inner housing member 88 is inserted into the plug frame 14 and fixed. The assembly of the optical fiber connection component 40 and the inner housing member 88 is inserted into the connection end 62 of the case 19 of the optical fiber gripping portion 12.

  Here, as shown in FIG. 10, the pins 31 and 31 of the connecting member 30 pass through the through holes 85 and 85 and the guide holes 89 and 89 and fit into the recesses 99 and 99 of the connection base 80. As a result, the assembly state shown in FIG. 15 is changed to the assembly state shown in FIG. 16, and as shown in FIG. 6, the assembly of the optical fiber connecting part 40 and the ferrule 20 and the optical fiber gripping portion 12 are connected. The members 30 are connected. When the ferrule 20 is pushed in the L1 direction in FIG. 6, the assembly of the optical fiber connecting part 40, the ferrule 20 and the optical fiber gripping portion 12 is along the axial direction L with respect to the outer housing 11 and the plug frame 14. Can move together.

  In FIG. 16, the plug frame 14 is passed through the outer housing 11, the cable gripping member 28 is placed on the case 19, and then the cover 13 is disposed with respect to the case 19.

The optical connector 10 assembled in this way is used as shown in FIG.
The outside 101 of the optical cable 100 is gripped by the cable gripping member 28, and the second optical fiber 102 of the optical cable 100 passes through the through hole 60 </ b> H of the connection main body 60 and is fixed to the V groove 300 of the optical fiber connection component 40. The distal end portion 110 of the second optical fiber 100 is abutted against and connected to the first end portion 201 of the first optical fiber 200 built in the ferrule 20.

  In FIG. 6, when connecting the first optical fiber 200 and the second optical fiber 100 on-site, when connecting another optical fiber to the ferrule 20, the ferrule 20 is pushed in the L1 direction. In addition, in conjunction with the movement of the ferrule 20 in the L1 direction, the assembly of the optical fiber connecting part 40, the ferrule 20 and the optical fiber gripping portion 12 is composed of the outer housing 11 and the plug frame shown in FIG. 14 and the inner housing member 88 can be moved (retracted) in the L1 direction. That is, the outer housing 11, the plug frame 14, and the inner housing member 88 are on the fixed side, and the assembly of the optical fiber connection part 40, the ferrule 20 and the optical fiber gripping portion 12 is on the moving side.

  Therefore, the abutting state between the connection end 110 of the second optical fiber 102 and the first connection end 201 of the first optical fiber 200 does not change inside the optical connector 10, so that the second optical fiber 102 is not bent. Does not occur. As a result, it is possible to prevent deterioration of optical characteristics due to the bending of the optical fiber.

  In the illustrated example, for example, as shown in FIG. 6, the optical cable 100 can be gripped using the cable gripping member 28 of the optical fiber gripping portion 12. However, the present invention is not limited to this, and the optical fiber gripper 12 can also hold the strand of the optical fiber using the cable gripping member 28. Therefore, the illustrated optical connector 10 can connect the first optical fiber 200 built in the ferrule 20 to correspond to the second optical fiber of both types of optical fiber strands, not limited to the optical cable having the jacket. By preparing only one type of connection base 80, it is possible not only to hold an optical cable having a jacket, but also to hold an optical fiber strand instead of the optical cable.

  An optical connector 10 according to an embodiment of the present invention includes a ferrule 20 that incorporates a first optical fiber 200, a grip portion 12 that grips a second optical fiber 102, and the ferrule 20 fixed to one end side. An optical fiber connection part 40 for connecting the fiber 200 and the second optical fiber 102 to face each other, and a housing member 88 that accommodates an assembly of the ferrule and the optical fiber connection part movably in the axial direction L against an urging force. And a connecting member 40 that connects the other end side of the optical fiber connecting component 40 and the gripping portion 12 so that the assembly of the ferrule 20 and the optical fiber connecting component 40 and the gripping portion 12 can be interlocked.

  As a result, in the optical connector 10 according to the embodiment of the present invention, even when another optical fiber is connected to the ferrule, even if the ferrule is pushed in the axial direction, the optical fiber is prevented from being bent. It can be applied to the connection of both an optical cable and an optical fiber using a gripping part.

  Further, the assembly of the ferrule 20 and the optical fiber connecting part 40 and the grip portion 12 can move in conjunction with the axial direction L against the urging force of the spring 63 that is the urging member with respect to the housing member 88. It is. As a result, the assembly of the ferrule 20 and the optical fiber connecting component 40 and the grip portion 12 can reliably move in conjunction with the housing member 88 against the force of the spring 63.

  Further, the gripping portion 12 includes a cable gripping member 28 that grips the optical cable 100 having the second optical fiber 102 and the jacket 101 that covers the second optical fiber 102, a case 19 on which the cable gripping member 28 is placed, and a case 19 And a cover 13 for closing. Thereby, the holding part 12 can hold | grip even with the optical cable instead of the strand of an optical fiber. An urging member is disposed between the other end side of the optical fiber connecting component 40 and the stopper 64 of the housing member 88. Thereby, the urging member can reliably apply the urging force by the optical fiber connecting component 40.

  The holding part 12 holds the second optical fiber of the optical cable or the strand. Thereby, it can connect even if it is any form of an optical cable or the 2nd optical fiber of a bare wire, and the operation | work on the spot becomes easy.

  As shown in FIG. 12, the optical fiber connection component 40 includes a connection base 80 that holds the second optical fiber 200, lids 81 and 82 that are disposed facing the connection base 80, and an inner housing. A clamp member 83 that presses the connection base 80 and the lids 81 and 82 together in the member 88 is provided. The lids 81 and 82 have first protrusions 81D and 82D, and the connection base 80 has a second protrusion 80D. The contact surfaces of the first protrusions 81D and 82D that contact the clamp member 83 and the clamp member 83 The contact surface of the second protrusion 80 </ b> D that contacts is formed in an arc shape with the center of the second optical fiber 102 as the central axis. Thereby, the connection base 80 and the lids 81 and 82 can efficiently apply a load without distributing the load to the second optical fiber.

  As shown in FIG. 12, there is a wedge 500 inserted between the connection base 80 and the lids 81 and 82 in order to fix the connection base 80 and the lids 81 and 82 in the inner housing member 88. The first contact point 221P between the contact surface of the clamp member 83 and the first protrusions 81D and 82D and the second contact point 222P between the contact surface of the clamp member 83 and the second protrusion 80D are the center of the inner housing member 88. It is shifted from the line to the position where the wedge 500 is disposed. As a result, the second optical fiber 102 wedge 500 can apply a force component in the direction opposite to the wedge 500 side, and even if the second optical fiber 102 wedge 500 is inserted between the connection base 80 and the lids 81, 82, the lid 81, 82 does not shift with respect to the connection base 80.

By the way, this invention is not limited to the said embodiment, A various modified example is employable.
For example, the shape of each component of the illustrated optical connector is not particularly limited. The connecting member 30 has two pins 31 and 31 that face each other. Compared to the case where the connecting member 30 has one pin, the connection between the optical fiber connecting component 40 and the optical fiber gripping portion 12 can be reliably performed when the connecting member 30 has the two pins 31 and 31.

The spring 63 is a coil spring, but may be a spring having another shape.
The connecting member 30 is made of plastic, but may be made of metal. The clamp member 83 is an elastically deformable leaf spring made of metal having a C-shaped cross section, but may be a leaf spring made of plastic.

It is a perspective view which shows preferable embodiment of the optical connector of this invention. It is the perspective view seen from the reverse direction of the optical connector shown in FIG. FIG. 3 is a perspective view illustrating a state in which a housing is removed from the optical connector illustrated in FIG. 2 and a plug frame is exposed from the inside. FIG. 3 is a side view of the optical connector shown in FIG. 2 as viewed from arrows Y2 and Y3. It is a figure which shows the top view which looked at the optical connector of FIG. 3 from arrow Y1. It is a figure which shows the optical fiber holding component of an optical connector, a plug frame, an optical fiber connection component, and a connection member. It is a figure which shows the example of a shape of an optical fiber connection component and a ferrule. It is a perspective view which shows each component of an optical fiber connection component, and these assembly procedures. It is a perspective view which shows each component of an optical fiber connection component, and these assembly procedures. It is a perspective view which shows the connection end part of the connection main-body part of an optical fiber holding component, the housing member of an optical fiber connection member, a plug frame, and a connection member. It is a perspective view which shows the vicinity of a connection member and a spring. It is a figure which shows the cross-sectional structure example in the BB line of the optical fiber connection member in FIG. 6, and a housing member. 2 is a perspective view showing each component of the optical connector 10. FIG. It is a perspective view which shows a mode that the plug frame and the optical fiber connection component were assembled. It is a perspective view which shows the state before attaching a connection member. It is a perspective view which shows the state which tries to assemble a cover etc.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Optical connector 11 Housing 12 Optical fiber gripping part 13 Cover 14 Plug frame 19 Case 20 Ferrule 28 Cable gripping member 30 Connecting member 31 Pin 45 2nd connection end part of a connection base 60 Connection body part 62 Connection end part of a connection body part 63 Spring (biasing member)
Reference Signs List 70 First connection end of connection base 80 Connection base 81, 82 Lid 83 Clamp member 85 Through hole 88 Housing member 99 Recess 100 Optical cable 102 Second optical fiber 200 First optical fiber 300 V groove L Axial direction

Claims (5)

A ferrule incorporating a first optical fiber;
A gripping part for gripping the second optical fiber;
The ferrule is fixed to one end side, and an optical fiber connection part for connecting the first optical fiber and the second optical fiber in contact with each other;
A housing member that accommodates the assembly of the ferrule and the optical fiber connecting component so as to be movable in the axial direction against an urging force;
A connecting member for connecting the other end portion side of the optical fiber connecting part and the gripping part, wherein the connecting member enables interlocking of the ferrule, the assembly of the optical fiber connecting part, and the gripping part. When,
An optical connector comprising:
The gripping portion includes a cable gripping member for gripping an optical cable having the second optical fiber and a jacket covering the second optical fiber, a case for placing the gripping member, and a cover for closing the case. ,
The coupling member has an assembly of the optical fiber connection component and a pin that is inserted from the outside into the grip portion and couples both;
The assembly and the grip of the ferrule and linked the optical fiber connection component, Ri movable der in conjunction with the prior SL-axis direction relative to said housing member,
One end of the housing member is inserted inside the grip portion, and the pin of the connecting member passes through a through hole provided in the housing member, and the assembly of the fiber connection component and the grip portion are connected. An optical connector characterized by that. The optical connector according to claim 1, wherein the pin can be removably inserted from an outside of the assembly of the optical fiber connecting component and the grip portion. 3. The optical connector according to claim 1, wherein the urging member is disposed between the other end portion side of the optical fiber connecting component and a stopper of the housing member. The optical fiber connecting component includes: a connection base that holds the second optical fiber; a lid that is disposed facing the connection base; and the connection base and the lid in the housing member. A clamp member that presses in a combined state,
The lid has a first protrusion, the connection base has a second protrusion, and the contact surface of the first protrusion that contacts the clamp member and the contact of the second protrusion that contacts the clamp member surfaces, the optical connector according to any one of claims 1 to 3, characterized in that it is formed in an arc shape whose central axis coincides with the center of the second optical fiber. A wedge inserted between the connection base and the lid to fix the connection base and the lid in the housing member;
As for the 1st contact of the contact surface of the said clamp member and the said 1st protrusion, and the 2nd contact of the contact surface of the said clamp member and the said 2nd protrusion, the said wedge is arrange | positioned from the centerline of the said housing member. The optical connector according to claim 4 , wherein the optical connector is shifted to a position side.

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