JP2011085696A - Optical connector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an optical connector in which optical fibers are firmly and stably clamped and an excellent connected state is kept. <P>SOLUTION: The optical connector includes: a ferrule having a built-in fiber 15; a base member 22 on which a fiber accommodation groove 26a is formed which accommodates a glass fiber 1 part of a coated optical fiber in a state abutted to the built-in fiber 15; a pressurizing member 23 disposed in an opposite position to the base member 22; and a leaf spring member 24 which pressurizes and fixes the glass fiber 1 and the built-in fiber 15 accommodated in the fiber accommodation groove 26a by energizing the base member 22 and the pressurizing member 23 in the approaching direction. The pressurizing member 23 is provided with a non-pressurizing region which does not come into contact with the built-in fiber 15 at least at one end side of a fiber pressurizing and fixing region A. The pressurizing member 23 is provided with a projection part 41 in the longitudinal direction including the fiber pressurizing and fixing region A, which projects the pressurizing direction at both side parts in the width direction, and supports the pressurizing force of the leaf spring member 24 by the fiber pressurizing and fixing region A and the projection part 41. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an optical connector attached to an end of an optical fiber for connecting the optical fiber.

  As an optical connector attached to the end of an optical fiber, a ferrule incorporating a short optical fiber, a gripping part for gripping the rear end of the ferrule, a base member having a fixing groove on the upper surface, and pressing the optical fiber against the fixing groove And a cover member having a mechanical splice mechanism for mechanically fixing the optical fiber between the base member and the cover member (see, for example, Patent Document 1).

  The mechanical splice technology includes a clamp member that clamps an optical fiber, with a protrusion provided only on one side of the optical fiber clamping part, and the clamping force is applied only to the optical fiber and the protrusion, thereby reducing the clamping force of the optical fiber. There is something to improve (for example, see Patent Document 2).

  Further, in a connector having a substrate and a holding plate as a clamp member, a gap is formed when an optical fiber is inserted by a convex portion formed on one of the substrate and the holding plate, and is formed on the other of the substrate or the holding plate. In some cases, the optical fiber is sandwiched between the substrate and the pressing plate by accommodating the convex portion in the concave portion (see, for example, Patent Document 3).

  Further, in a connector having a V-groove substrate and a pressing substrate as a clamp member, a recess extending in the optical axis direction is formed around the butted portion of the optical fibers, and the pressing substrate is held by the clamp spring in the recess by the optical fiber. There is also known one that bends toward the abutting portion of the optical fiber and holds down the abutting portion of the optical fiber (for example, see Patent Document 4).

JP-A-10-170756 Japanese Patent Laid-Open No. 10-20139 Japanese Utility Model Publication No. 63-191302 Japanese Patent Laid-Open No. 2002-22998

By the way, in the optical connector as described in Patent Document 1, in order to maintain a stable connection state of the optical fiber and obtain high alignment accuracy, the optical fiber is positioned and clamped to the entire portion to be aligned. It is necessary to apply force evenly.
In the technique of Patent Document 2, the clamping force of the optical fiber can be improved only by applying the clamping force of the optical fiber only to a part of the optical fiber and the clamping member, without increasing the spring force for applying the clamping force.

However, since the optical fiber accommodated in the alignment groove of one clamp member is located in the approximate center of the other clamp member, two locations of the protrusion and the optical fiber provided only on one side of the alignment groove When the other clamp member is supported only by this, the other clamp member is inclined to the side where the protrusion does not exist and hits one side, and it is difficult to maintain a good connection state of the optical fiber due to a decrease in alignment accuracy. There is.
Even if the protrusion from the alignment groove of the optical fiber and the protrusion are set to have the same height, the other clamp member is inclined due to dimensional tolerance, and the clamping force does not act equally on the optical fiber and the protrusion. As a result, the clamping force varies, and the gripping of the optical fiber becomes unstable.

  Also, in the case of the connectors described in Patent Documents 3 and 4, when clamping an optical fiber, a clamp plate or a presser that is the other clamp member with respect to a substrate that is one clamp member or a V-groove substrate. The substrate tilts with the optical fiber disposed at the approximate center in the width direction as a fulcrum, and the gripping of the optical fiber becomes unstable.

  The objective of this invention is providing the optical connector which can clamp an optical fiber reliably and stably and can maintain a favorable connection state.

The optical connector of the present invention capable of solving the above problems is an optical connector attached to an optical fiber core wire in which a glass fiber is exposed from a coating,
A ferrule having a built-in fiber against which the glass fiber is abutted;
A base member formed with an accommodation groove for accommodating the glass fiber portion of the optical fiber core in a state of abutting against the built-in fiber;
A pressing member disposed at a position facing the base member;
A biasing member that presses and fixes the glass fiber and the built-in fiber housed in the housing groove by biasing the base member and the pressing member in the proximity direction;
The pressing member is provided with a non-pressing region that does not contact the glass fiber or the built-in fiber on at least one end side in the fiber axial direction in the press fixing region where the glass fiber and the built-in fiber are pressed and fixed,
Both or any one of the base member and the pressing member is formed with protrusions that protrude in the pressing direction at both side portions in a direction orthogonal to the fiber axis direction along the fiber axis direction including the pressing fixing region. ,
The pressing force by the urging member is supported by the pressing fixing region and the protrusion.

  In the optical connector of the present invention, it is preferable that the protrusion is disposed on the ferrule side.

  The optical connector of this invention WHEREIN: It is preferable that the area | region urged | biased by the said urging | biasing member is extended in the said ferrule side rather than the said press fixation area | region.

  In the optical connector according to the aspect of the invention, it is preferable that in the non-pressing region, a surface of the pressing member facing the base member is gradually separated from the base member as the pressing member is separated from the pressing fixing region.

  In the optical connector according to the aspect of the invention, the protruding portion is disposed with a gap between the protruding surface and the urging force by the urging member acting in a state where the urging force by the urging member is released. It is preferable that the glass fiber and the built-in fiber are pressed and fixed so that the base member and the pressing member come close to each other and come into contact with the facing surface.

  In the optical connector according to the aspect of the invention, it is preferable that a pressing protrusion protruding toward the base member side is formed in the pressing fixing region of the pressing member at a position facing the receiving groove.

  In the optical connector according to the aspect of the invention, it is preferable that the pressing protrusion has a protruding dimension larger than that of the protruding portion.

  In the optical connector of the present invention, at least one of the base member and the pressing member is formed with a beam portion with which the biasing member abuts at a position corresponding to the pressing and fixing region of the glass fiber. It is preferable.

  In the optical connector of the present invention, at least one of the base member or the pressing member is a positioning portion that engages with the protrusion and positions the base member and the pressing member in a direction perpendicular to the fiber axis direction. Is preferably provided.

According to the optical connector of the present invention, when the base member and the pressing member are biased in the proximity direction by the biasing member, the glass fiber and the built-in fiber are pressed and fixed by the base member and the pressing member in the pressing and fixing region. The Further, at this time, the base member and the pressing member are stably arranged without tilting by the protrusions coming into contact with the opposing surface. Further, even in the non-pressing region, the base member and the pressing member are stably arranged without tilting by the protrusions coming into contact with the opposing surface.
As a result, the base member and the pressing member are not inclined relative to either the direction along the fiber axis direction or the direction perpendicular to the fiber axis direction. It is possible to eliminate the problem that the pressing and fixing becomes unstable. That is, since the clamping force can be concentrated in the pressing and fixing region, the built-in fiber and the glass fiber can be stably pressed and fixed in a good alignment state, and a good connection state between the built-in fiber and the glass fiber can be maintained. Can do.

It is a side view showing the appearance of one embodiment of the optical connector concerning the present invention. It is a sectional side view which shows the splice mechanism of the optical connector of FIG. It is sectional drawing of the fiber press fixing area | region of the splice mechanism of FIG. It is sectional drawing of the non-pressing area | region of the splice mechanism of FIG. It is sectional drawing of the fiber press fixation area | region which shows the modification of a splice mechanism. FIG. 3 is a cross-sectional view of a fiber pressing and fixing region in a clamped state of the splice mechanism of FIG. 2. It is sectional drawing of the non-pressing area | region in the clamped state of the splice mechanism of FIG. It is sectional drawing of the fiber press fixation area | region which shows the other example of a splice mechanism.

Hereinafter, an example of an embodiment of an optical connector according to the present invention will be described with reference to the drawings.
As shown in FIGS. 1 and 2, the optical connector 11 is a mechanical splice type optical connector, and is attached to the end of the optical fiber core wire 3 in which the glass fiber 1 is exposed from the coating 2.
The optical connector 11 has a ferrule 14 inside the housing 13. The ferrule 14 includes a built-in fiber 15 made of a short glass fiber, and the built-in fiber 15 extends from the rear end of the ferrule 14.
The optical connector 11 includes a splice mechanism 21 on the rear side of the ferrule 14 in the housing 13. The splice mechanism 21 fixes the optical fiber core wire 3 inserted from the rear end side of the optical connector 11. .

As shown in FIG. 3, the splice mechanism 21 attaches the base member 22, the pressing member 23 disposed at a position opposite to the base member 22, and the base member 22 and the pressing member 23 in the proximity direction. And a leaf spring member (biasing member) 24 for biasing.
The end of the optical fiber core 3 inserted between the base member 22 and the pressing member 23 is pressed and fixed between the base member 22 and the pressing member 23 by the urging force of the leaf spring member 24. It is like that.

  The housing 13 has a plurality of insertion openings 16 formed on the side thereof (see FIG. 1), and a wedge (not shown) can be inserted into and removed from these insertion openings 16. By inserting wedges into these insertion openings 16, the base member 22 and the pressing member 23 constituting the splice mechanism 21 are separated from each other against the urging force of the leaf spring member 24. Accordingly, the end portion of the optical fiber core wire 3 can be inserted and removed in an unclamped state where the base member 22 and the pressing member 23 are separated from each other.

  The base member 22 is integrally molded from, for example, resin, and a fitting recess 25 into which the rear end portion of the ferrule 14 is fitted is formed at the end portion thereof. An accommodation groove 26 is formed along the longitudinal direction at the center position in the width direction (a direction orthogonal to the fiber axis direction) on the clamp surface 22 a formed from the upper surface of the base member 22. The accommodation groove 26 is formed in a V shape in a sectional view, and includes a fiber accommodation groove 26a and a core wire accommodation groove 26b.

The fiber housing groove 26a on the ferrule 14 side accommodates the built-in fiber 15 extending from the ferrule 14 and the glass fiber 1 exposed from the coating 2 of the optical fiber core wire 3.
The core wire housing groove 26b is a V-shaped groove larger than the fiber housing groove 26a, and the optical fiber core wire 3 having the coating 2 is housed in the core wire housing groove 26b.

  The housing groove 26 has a guide groove 26c between the core wire housing groove 26b and the fiber housing groove 26a. The guide groove 26c is formed such that the size of the groove gradually decreases from the end of the core wire accommodation groove 26b toward the fiber accommodation groove 26a. By this guide groove 26c, the glass fiber 1 of the optical fiber core wire 3 inserted from the rear end side of the optical connector 11 is smoothly guided to the fiber accommodation groove 26a. Thus, the glass fiber 1 guided and accommodated in the fiber accommodation groove 26a has its end face 1a abutted against the end face 15a of the built-in fiber 15 previously accommodated in the fiber accommodation groove 26a.

  Similar to the base member 22, the pressing member 23 is integrally formed of resin, for example, and is pressed against the base member 22 by the urging force of the leaf spring member 24, thereby accommodating the built-in fiber accommodated in the accommodation groove 26. 15. The glass fiber 1 and the optical fiber core wire 3 are sandwiched and pressed and fixed.

  A pressing projection 31 is formed on the clamp surface 23a formed of the lower surface of the pressing member 23 along the longitudinal direction (the direction along the fiber axis direction) at the center position in the width direction. The optical fiber core wire 3 is pressed against the base member 22 by the pressing protrusion 31 of the pressing member 23. Grooves 32 are formed on both sides of the pressing protrusion 31 so that the urging force of the leaf spring member 24 is concentrated on the pressing protrusion 31.

  In the splicing mechanism 21, a region for pressing and fixing the built-in fiber 15 and the glass fiber 1 including the abutting portion T between the built-in fiber 15 and the glass fiber 1 is defined as a fiber pressing and fixing region A, and a region for clamping the optical fiber core wire 3. The core wire pressing and fixing region B is used.

  Further, the pressing member 23 extends so that the region biased by the leaf spring member 24 protrudes toward the ferrule 14 side from the fiber pressing and fixing region A. Thereby, the pressing member 23 is pressed against the base member 22 so as to be inclined toward the ferrule 14 by the urging force of the leaf spring member 24. Therefore, in the fiber pressing and fixing region A, a larger clamping force is generated on the built-in fiber 15 side than on the glass fiber 1 side.

  Thereby, in the splice mechanism 21, the built-in fiber 15 can be reliably gripped by a large clamping force. That is, even if the built-in fiber 15 is shortened and the pressed length is shortened, it can be surely gripped, so that the entire optical connector 11 can be shortened by shortening the built-in fiber 15. In addition, by reliably and stably fixing the built-in fiber 15, the connection state with the glass fiber 1 is stabilized with high accuracy, and transmission characteristics can be stabilized. In addition, since the glass fiber 1 and the optical fiber core wire 3 are pressed and fixed in a sufficiently long region, even if tension is applied to the optical fiber core wire 3 extending from the optical connector 11, Pull-out is prevented.

  Further, the pressing member 23 is provided with a non-pressing region C that does not press the built-in fiber 15 at an end portion that extends so as to protrude toward the ferrule 14 from the fiber pressing and fixing region A. In this non-pressing region C, the clamp surface 23a, which is the surface of the pressing member 23 that faces the base member 22, is tapered or curved so that it gradually separates from the base member 22 as it moves away from the fiber pressing and fixing region A. Yes.

  Thereby, even if a large clamping force acts on the built-in fiber 15 on the ferrule 14 side of the fiber pressing and fixing region A, stress concentration at the end of the fiber pressing and fixing region A on the ferrule 14 side is avoided, and the Damage due to excessive lateral pressure load and stress concentration can be suppressed as much as possible.

  The pressing member 23 is formed with a relief recess 38 at the boundary between the fiber pressing and fixing region A and the core pressing and fixing region B. The escape recess 38 is formed by a pair of tapered surfaces 38a that are gradually separated from the base member 22 side. By forming the relief recess 38, the corner of the step formed at the boundary between the fiber pressing and fixing region A and the core pressing and fixing region B is eliminated, and the corner of the step contacts the glass fiber 1. Stress concentration due to is eliminated.

As shown in FIGS. 3 and 4, the pressing member 23 is formed with protruding portions 41 that protrude toward the base member 22 in the pressing direction at both sides in the width direction. The protrusion 41 is formed in the longitudinal direction including the fiber pressing and fixing region A. Specifically, these protrusions 41 are formed on both sides of the fiber pressing and fixing region A and the core pressing region B, and further extend on both sides of the non-pressing region C. Thereby, as shown in FIG. 4, in the non-pressing region C, only the protrusion 41 is formed on the clamp surface 23 a of the pressing member 23.
In addition, although these protrusion parts 41 may be formed over the full length direction of the press member 23, it is preferable to be provided in the ferrule 14 side including the non-pressing area | region C where especially a big clamping force is produced. Thereby, the inclination of the pressing member 23 can be effectively suppressed.

  The pressing protrusion 31 formed on the pressing member 23 has a projecting dimension larger than the protruding portions 41 on both sides. Further, the protruding portion 41 is arranged in a unclamped state where the urging force by the leaf spring member 24 is released with a gap between the protruding portion 41 and the clamping surface 22a of the base member 22 which is the opposing surface (FIG. 3). reference).

A beam portion 42 is formed on the contact surface 22b formed of the lower surface of the base member 22 along the longitudinal direction at the center in the width direction. The beam portion 42 is formed so as to protrude toward the plate spring member 24, and the beam portion 42 is in contact with the plate spring member 24.
Similarly to the base member 22, a beam portion 43 is formed on the contact surface 23 b formed on the upper surface of the pressing member 23 at the center in the width direction along the longitudinal direction. The beam portion 43 is formed so as to protrude toward the plate spring member 24, and the beam portion 43 is in contact with the plate spring member 24.

  The beam portions 42 and 43 of the base member 22 and the pressing member 23 may be formed at least at positions corresponding to the fiber pressing and fixing region A. By forming the beam portions 42 and 43, the base member 22 and the pressing member 23 are pressed. The clamping force by the member 23 is concentratedly applied to the center in the width direction. The beam portions 42 and 43 may be formed on either the base member 22 or the pressing member 23. Further, as shown in FIG. 5, the beam portions 42 and 43 may have shapes having skirt portions 42a and 43a that are gently inclined toward the side as shown in FIG. The deformation (sink) of the base member 22 and the pressing member 23 can be suppressed.

  The leaf spring member 24 that sandwiches the base member 22 and the pressing member 23 includes a connecting piece portion 51 and a pair of pressing piece portions 52 that extend in the same direction from the upper and lower ends of the connecting piece portion 51. It is formed in a letter shape or a U-shape. The pressing piece 52 of the leaf spring member 24 is in contact with the base member 22 and the pressing member 23. The pressing piece 52 is divided into a fiber-side pressing piece 52a corresponding to the non-pressing area C and the fiber pressing and fixing area A and a core side pressing piece 52b corresponding to the core pressing and fixing area B. Yes.

  The length in the longitudinal direction of the fiber side pressing piece 52a is set to be equal to or longer than the length in the longitudinal direction of the fiber pressing and fixing region A, and the length in the longitudinal direction of the core side pressing piece 52b is the core wire. The length is longer than the length of the pressing and fixing region B in the longitudinal direction. Thus, the urging force is surely applied to the entire area of the fiber pressing and fixing region A and the core pressing and fixing region B by the fiber side pressing piece 52a and the core wire pressing piece 52b of the leaf spring member 24. Can be done.

  In addition, a plurality of convex portions 54 projecting toward the base member 22 and the pressing member 23 are formed at intervals in the longitudinal direction at the center position in the width direction of the action piece portion 52 of the leaf spring member 24. These convex portions 54 are in contact with the beam portions 42 and 43 of the base member 22 and the pressing member 23. Then, by forming these convex portions 54, the urging force of the leaf spring member 24 is concentrated on the base member 22 and the pressing member 23 via the pressing piece portion 52. In particular, in the fiber-side pressing piece 52a, it is preferable to increase the protruding amount of the convex portion 54a at a position corresponding to the abutting portion T between the built-in fiber 15 and the glass fiber 1. If it does in this way, the urging | biasing force provided to the butt | matching location T can be raised, and the butt | matching location T can be hold | gripped with a bigger clamping force.

In the optical connector 11 having the above-described configuration, the urging force by the leaf spring member 24 is released, that is, the unclamped state where the wedge member is inserted into the insertion port 16 of the housing 13 and the base member 22 and the pressing member 23 are separated from each other. In the state, as shown in FIG. 3 and FIG. 4, each protrusion 41 is disposed with a gap between the opposing surfaces.
In this state, by pulling out the wedge from the insertion port 16, when the biasing force of the leaf spring member 24 acts and the base member 22 and the pressing member 23 are brought into a clamped state, the built-in fiber 15, the glass fiber 1, and the light The fiber core wire 3 is pressed and fixed.

  At this time, in the fiber pressing and fixing region A, as shown in FIG. 6, in the fiber accommodating groove 26 a of the base member 22 and the pressing protrusion 31 of the pressing member 23, the portion where the built-in fiber 15 and the glass fiber 1 are in contact is a leaf spring member. It is elastically deformed by the urging force of 24. Thereby, in the fiber pressing and fixing area A, the built-in fiber 15 and the glass fiber 1 accommodated in the fiber accommodating groove 26 a are firmly held by the base member 22 and the pressing member 23. Accordingly, the base member 22 and the pressing member 23 come close to each other.

  When the pressing protrusion 31 and the fiber accommodation groove 26a are elastically deformed, each protrusion 41 comes into contact with the clamping surface 22a of the base member 22 that is the opposing surface thereof, whereby the clamping force by the leaf spring member 24 is The built-in fiber 15 and the glass fiber 1 are supported by the fiber pressing and fixing area A in which the pressing and fixing are performed and the protrusions 41.

  Further, a strong pressing force acts between the pressing protrusion 31 of the fiber pressing and fixing region A and the fiber housing groove 26a, and a small pressing force acts between the protruding portion 41 and the clamp surface 22a. Therefore, most of the urging force of the leaf spring member 24 is efficiently used for pressing and fixing the built-in fiber 15 and the glass fiber 1, and the remaining urging force is used for preventing the inclination of the base member 22 and the pressing member 23. .

  At this time, as shown in FIG. 7, in the non-pressing region C, the base member 22 and the pressing member 23 come close to each other, so that the protruding portion 41 is opposed to the clamping surface 22 a of the base member 22 that is the opposing surface. Thus, the clamping force by the leaf spring member 24 is supported by the respective protrusions 41.

  Thus, in the optical connector 11 according to the above embodiment, when the base member 22 and the pressing member 23 are sandwiched by the leaf spring member 24, the glass fiber 1 and the built-in fiber 15 are the base member in the fiber pressing and fixing region A. 22 and the pressing member 23, and the optical fiber core wire 3 is pressed and fixed by the base member 22 and the pressing member 23 in the core wire pressing and fixing region B. At this time, the protrusion 41 of the pressing member 23 comes into contact with the base member 22, so that the pressing member 23 is stably arranged with no inclination with respect to the base member 22. In the non-pressing area C, the protrusion 41 of the pressing member 23 abuts against the base member 22, so that the pressing member 23 is stably arranged without tilting with respect to the base member 22.

  Thereby, when the base member 22 and the pressing member 23 are relatively inclined, it is possible to eliminate a problem that the clamping force is dispersed and the built-in fiber 15 and the glass fiber 1 are unstablely clamped.

  That is, according to the optical connector 11 according to the present embodiment, the clamping force is concentrated on the fiber pressing and fixing region A by eliminating the relative inclination between the base member 22 and the pressing member 23 and maintaining the parallel state. Therefore, the built-in fiber 15 and the glass fiber 1 can be stably clamped in a good alignment state, and a good connection state between the built-in fiber 15 and the glass fiber 1 can be maintained.

  In the above-described embodiment, the pressing member 23 is extended so as to protrude toward the ferrule 14 from the fiber pressing and fixing region A. However, the pressing member 23 protrudes from the fiber pressing and fixing region A to the opposite side of the ferrule 14. You may extend as you do. In this way, the pressing member 23 is pressed against the base member 22 so as to be inclined to the opposite side of the ferrule 14 by the urging force of the leaf spring member 24, and a larger clamping force is generated on the glass fiber 1 side in the fiber pressing and fixing region A. become. In this case, the glass fiber 1 can be reliably gripped by a large clamping force, and the entire optical connector 11 can be shortened by shortening the length of the glass fiber 1 required for clamping.

  Moreover, in the said embodiment, although the projection part 41 was formed in the press member 23, this projection part 41 may be formed in the base member 22, and it forms in both the press member 23 and the base member 22. Also good.

Further, as shown in FIG. 8, positioning portions 61 projecting toward the pressing member 23 are formed on both side portions of the base member 22 in the width direction, and the positioning portions 61 are engaged with the protruding portions 41 of the pressing member 23. You may do it. If it does in this way, the base member 22 and the press protrusion 23 can be positioned in the width direction, and the built-in fiber 15, the glass fiber 1, and the optical fiber core wire 3 are stably pressed and fixed in a better alignment state. be able to.
When the protrusion 41 is formed on the base member 22, the positioning part 61 is formed on the pressing member 23.

  In the above-described embodiment, the structure in which the integral pressing member 23 is disposed over the fiber pressing and fixing area A and the core pressing and fixing area B has been described as an example. It may be divided into a portion that presses and a portion that presses the core wire pressing region B. In this way, the urging force by the leaf spring member 24 can be adjusted independently between the fiber pressing and fixing region A and the core pressing and fixing region B. For example, by making the clamping force of the fiber pressing and fixing region A larger than that of the core pressing and fixing region B, the built-in fiber 15 having the butted portion T and the glass fiber 1 can be gripped with a strong force. In addition, if the integral pressing member 23 is used over the fiber pressing and fixing region A and the core pressing and fixing region B as in the above-described embodiment, the cost can be reduced by reducing the number of components, and the positional deviation between components can be reduced. Can be eliminated.

1: glass fiber, 2: coating, 3: optical fiber core wire, 11: optical connector, 14: ferrule, 15: built-in fiber, 22: base member, 23: pressing member, 24: leaf spring member (biasing member) , 26: receiving groove, 26a: fiber receiving groove, 31: pressing projection, 41: protruding portion, 42, 43: beam portion, 61: positioning portion, A: fiber pressing fixing region (pressing fixing region), C: non-pressing region

Claims (9)

An optical connector attached to an optical fiber core wire in which a glass fiber is exposed from a coating,
A ferrule having a built-in fiber against which the glass fiber is abutted;
A base member formed with an accommodation groove for accommodating the glass fiber portion of the optical fiber core in a state of abutting against the built-in fiber;
A pressing member disposed at a position facing the base member;
A biasing member that presses and fixes the glass fiber and the built-in fiber housed in the housing groove by biasing the base member and the pressing member in the proximity direction;
The pressing member is provided with a non-pressing region that does not contact the glass fiber or the built-in fiber on at least one end side in the fiber axial direction in the press fixing region where the glass fiber and the built-in fiber are pressed and fixed,
Both or any one of the base member and the pressing member is formed with protrusions that protrude in the pressing direction at both side portions in a direction orthogonal to the fiber axis direction along the fiber axis direction including the pressing fixing region. ,
The optical connector according to claim 1, wherein the pressing force by the biasing member is supported by the pressing fixing region and the protrusion. The optical connector according to claim 1,
The optical connector according to claim 1, wherein the protrusion is disposed on the ferrule side of the pressing member. The optical connector according to claim 1 or 2,
The optical connector is characterized in that an area of the pressing member that is urged by the urging member extends to the ferrule side with respect to the pressing and fixing area. The optical connector according to any one of claims 1 to 3,
In the non-pressing region, the surface of the pressing member facing the base member is gently separated from the base member as the pressing member is separated from the pressing fixing region. The optical connector according to any one of claims 1 to 4,
The projecting portion is disposed with a gap between the protruding surface and the opposing surface in a state where the biasing force by the biasing member is released, and the biasing force by the biasing member acts to cause the glass fiber and the built-in fiber. Is pressed and fixed, and the base member and the pressing member come close to each other so that they come into contact with the opposing surface. An optical connector according to any one of claims 1 to 5,
The optical connector according to claim 1, wherein a pressing protrusion that protrudes toward the base member is formed at a position facing the receiving groove in the pressing fixing region of the pressing member. The optical connector according to claim 6,
The optical connector according to claim 1, wherein the pressing protrusion has a protruding dimension larger than that of the protruding portion. The optical connector according to any one of claims 1 to 7,
An optical connector characterized in that at least one or both of the base member and the pressing member is formed with a beam portion with which the urging member abuts at a position corresponding to the pressing and fixing region of the glass fiber. . The optical connector according to any one of claims 1 to 8,
At least one of the base member or the pressing member is provided with a positioning portion that engages with the protrusion and positions the base member and the pressing member in a direction perpendicular to the fiber axis direction. A featured optical connector.

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