JP6186617B2 - Optical connector - Google Patents

Description

  The present invention relates to an optical connector that optically connects by abutting the end faces of optical fibers without using a ferrule.

2. Description of the Related Art Conventionally, as an optical connector that is optically connected by abutting the end faces of optical fibers, there is one that uses a ferrule that holds the optical fiber. This ferrule is required to have high accuracy in its dimensions, so that the price is high, or the work of bonding and fixing the optical fiber in the hole of the ferrule and the work of polishing the end face of the optical fiber take time. There is a problem.
In order to solve the problem of using a ferrule, for example, Patent Document 1 proposes an optical connector having a configuration that does not use a ferrule.

The optical connector described in Patent Document 1 and Patent Document 2 includes a first housing, a first optical fiber accommodated in the first housing, a second housing engaged with the first housing, and a second housing. Optically connected by abutting the tip surface of the first optical fiber and the tip surface of the second optical fiber with the engagement between the first housing and the second housing To do.
In this optical connector, the first housing has a first guide groove for guiding the tip of the second optical fiber so as to align with the axis of the first optical fiber, and the second housing moves the tip of the first optical fiber to the first optical fiber. A second guide groove is provided for guiding so as to be aligned with the axis of the two optical fibers, and the optical fiber is aligned by the first guide groove and the second guide groove.

Japanese Patent Laid-Open No. 54-5746 JP 2002-243984 A

  However, in the optical connectors described in Patent Document 1 and Patent Document 2, there is a possibility that the optical fiber shaft that is abutted is displaced due to the clearance of the portion that aligns the optical fiber, and the optical connection loss increases. . In addition, if there is a bend at the tip of the optical fiber, when the housings are engaged with each other, there is a risk that the optical fiber will come into contact with the connecting partner's housing before starting the guide by the connecting partner's guide groove, causing damage. It was.

  The present invention has been made in view of the above, and an object of the present invention is to provide an optical connector capable of suppressing optical connection loss and preventing an optical fiber from being damaged.

In order to solve the above-described problems and achieve the object, an optical connector according to claim 1 of the present invention includes a first housing, a first optical fiber accommodated in the first housing, and the first housing. A second housing to be engaged, and a second optical fiber accommodated in the second housing, and a front end surface of the first optical fiber as the first housing and the second housing are engaged with each other. And an optical connector optically connected by abutting the front end surface of the second optical fiber, the first housing so that the front end of the second optical fiber is aligned with the axis of the first optical fiber In order to guide, it has the 1st guide part in which the 1st guide groove was formed in the 1st guide surface parallel to an optical axis, and the 2nd housing has the tip part of the 1st optical fiber in the 2nd optical fiber. To the axis of The first guide is provided between the second guide surface and a second guide portion in which a second guide groove is formed in a second guide surface facing the first guide surface in parallel. The outer surface of the first guide part that protrudes to a position where the tip of the second guide part is aligned with the second guide part in the optical axis direction so that a space into which the part can be inserted is formed and that is on the back side with respect to the first guide surface An engagement guide portion having a guide sliding contact surface extending in the optical axis direction so as to be in sliding contact with the second guide portion, wherein the second guide portion has a narrower interval between the first guide groove and the second guide groove. The first housing has a pressing portion that presses the second guide portion in a direction to narrow the gap between the first guide groove and the second guide groove, and the first housing The optical fiber and the second optical fiber are the first By housing and said second housing the guide said first guide portion to the sliding surface is engaged while being in sliding contact, the arrangement in which the axis is displaced in a direction perpendicular to the optical axis, the first The gap between the guide groove and the second guide groove is narrowed so that the first optical fiber and the second optical fiber are held in a state in which the distal end surfaces of each other are abutted with each other.

An optical connector according to claim 2 of the present invention is the contact surface between the second guide portion and the pressing portion when the first housing and the second housing are engaged with each other. Is parallel to the optical axis direction.

In the optical connector according to claim 3 of the present invention, in the above invention, the first housing and / or the second housing have an extra length of the first optical fiber and the second optical fiber. It has a space to absorb and absorb.

  According to a first aspect of the present invention, there is provided an optical connector in which the first optical fiber and the second optical fiber are pivoted in a direction perpendicular to the optical axis by engagement of the first housing and the second housing. In the state in which the distal end surfaces of the first optical fiber and the second optical fiber are abutted with each other by narrowing the interval between the first guide groove and the second guide groove, Since the first optical fiber and the second optical fiber are bent, the optical fiber may contact the connection partner housing before the guide is started by the guide groove. When the first housing and the second housing are engaged, the first optical fiber and the second optical fiber are separated from each other by the first guide groove and the first optical fiber. It is repaired bending tendency of the distal end portion by the guide groove aligning so held, suppressing optical connection loss, and it is possible to prevent the optical fiber may be damaged.

Optical connector according to claim 1 of the present invention, the said second guide portion and the mutual tip the first guide groove of elasticity and the first optical fiber by using said second optical fiber of the Since it is clamped by the two guide grooves, a clamping mechanism can be provided with a simple configuration.

In the optical connector according to claim 2 of the present invention, even when the first housing and the second housing rattle in the optical axis direction, the contact surface between the second guide portion and the pressing portion is Since it is parallel to the optical axis direction, the distance between the first guide groove and the second guide groove is kept constant, and the tip surfaces of the first optical fiber and the second optical fiber abut each other. Since the clamped state can be maintained, an increase in optical connection loss can be reliably suppressed.

According to a third aspect of the present invention, there is provided an optical connector according to claim 3 , wherein the first optical fiber and the second optical fiber are bent by the space so that the extra length of the first optical fiber and the second optical fiber is increased. Can be absorbed.

FIG. 1 is a cross-sectional view showing a configuration of an optical connector according to an embodiment of the present invention. 2 is a cross-sectional view of the optical connector shown in FIG. 1 taken along line AA and line BB. FIG. 3 is a diagram illustrating an operation until the engagement between the first housing and the second housing of the optical connector is completed. 4A is a cross-sectional view taken along line CC of the optical connector of FIG. 3, FIG. 4B is a cross-sectional view taken along line DD of the optical connector of FIG. 3, and FIG. It is a figure which shows the EE sectional view taken on the line of 3 optical connectors. FIG. 5 is a diagram illustrating a state in which the first housing and the second housing are displaced in the optical axis direction due to rattling.

  DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of an optical connector according to the present invention will be described in detail with reference to the drawings.

DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of an optical connector according to the present invention will be described in detail with reference to the drawings.
FIG. 1 is a cross-sectional view showing a configuration of an optical connector 1 according to an embodiment of the present invention. 2 is a cross-sectional view of the optical connector 1 shown in FIG. 1 taken along line AA and line BB.
An optical connector 1 according to an embodiment of the present invention includes a first housing 10, a first optical fiber 100 accommodated in the first housing 10, a second housing 40 engaged with the first housing 10, and a second A second optical fiber 200 accommodated in the housing 40, and a front end surface 100 a of the first optical fiber 100 and a front end surface of the second optical fiber 200 as the first housing 10 and the second housing 40 are engaged with each other. Optical connection is made by abutting 200a.

First, the first optical fiber 100 and the second optical fiber 200 will be described.
The first optical fiber 100 removes a covering portion (not shown) of the terminal portion, and the exposed end portion 100b of the first optical fiber 100 (hereinafter referred to as the first end portion 100b) protrudes from the fiber insertion hole 12. Thus, the first housing 10 is accommodated.
The second optical fiber 200 removes a coating portion (not shown) of the terminal portion so that the exposed tip portion 200b of the second optical fiber 200 (hereinafter referred to as the second tip portion 200b) protrudes from the fiber insertion hole 41a. In the second housing 40.

Next, the first housing 10 will be described.
The first housing 10 is made of a synthetic resin material that can be elastically deformed without being damaged by a lock mechanism (not shown) even when repeatedly attached to and detached from the second housing 40. For example, PBT (polybutylene terephthalate) can be applied.

  The first housing 10 protrudes in a step-down manner from the first housing base 11 constituting the main body portion and the first housing base 11, and aligns the leading ends of the first optical fiber 100 and the second optical fiber 200. A single-core protrusion 12 is integrally formed.

  The first housing base 11 is a hole extending in parallel with the optical axis, and a fiber insertion hole 11a for linearly inserting the first optical fiber 100 and the first optical fiber 100 by caulking, bonding, welding, etc. A fixing mechanism (not shown) that is fixed to one housing 10.

  The first alignment protrusion 12 includes a first guide 20 and a pressing protrusion 30 provided with a space in which a later-described second guide 50 can be inserted between the first guide 20 and the first guide 20.

Since the first guide portion 20 guides the second tip portion 200b so as to be aligned with the axis of the first optical fiber 100, a first guide groove 22 is formed in the first guide surface 21 parallel to the optical axis.
The first guide portion 20 guides the first distal end portion 100b in the optical axis direction by the first guide groove 22, and also precedes the distal end surface 100a of the first optical fiber 100 (hereinafter referred to as the first distal end surface 100a). The second tip portion 200b is guided in the first guide groove 22 extending in the direction.

As shown in FIG. 2, the first guide groove 22 has a V-shaped cross section and is linearly formed from the proximal end portion to the distal end portion of the first guide portion 20.
Further, the groove depth of the first guide groove 22 is adjusted so that the centers of the first optical fiber 100 and the second optical fiber 200 are located above the first guide surface 21 that is the groove upper edge surface.
The V-shaped apex angle of the first guide groove 22 may be adjusted to 90 degrees so that the first optical fiber 100 and the second optical fiber 200 are held by the first guide groove 22 under uniform pressure. .

  Further, the first guide portion 20 itself has a rigidity that does not deform due to a force applied when the distal ends 100 b and 200 b of the first optical fiber 100 and the second optical fiber 200 are sandwiched between the second guide portions 50. It has become. Alternatively, the first guide portion 20 is prevented from being deformed by being supported by an engagement guide portion 60 described later.

The pressing protrusion 30 includes a pressing portion 31 that presses the second guide portion 50 in a direction that narrows the distance between the first guide groove 22 and a second guide groove 52 described later.
The pressing portion 31 is a portion formed in a step shape around the position where the first tip end portion 100b is arranged so as to narrow the interval with the first guide surface 21.
More specifically, the pressing portion 31 has a pressing guide inclined surface 31b that is inclined so that the thickness gradually increases toward the first housing base 11 until reaching the stepped upper surface 31a.
Thereby, the front-end | tip part of the 2nd guide part 50 touches the press guide inclined surface 31b, and it rides on the level | step difference upper surface 31a of the press part 31, gradually elastically deforming.

  Further, the projecting end surface 30a of the pressing projection 30 is abutted against a step 40a between a second housing base 41 (to be described later) and the second alignment projection 42 of the second housing 40, whereby the first housing 10 and The second housing 40 is positioned in the engagement direction.

  In such a first housing 10, the first guide portion 20 and the pressing protrusion 30 protrude from the first tip surface 100 a in the moving direction for engagement of the first housing 10. The distal end portion 100 b is protected by the first guide portion 20 and the pressing protrusion 30.

Next, a procedure for attaching the first optical fiber 100 to the first housing 10 will be described.
First, a covering portion (not shown) that covers the terminal portion of the first optical fiber 100 is removed, and the first optical fiber 100 is cut so that the end surface of the first optical fiber 100 is smooth.

Thereafter, the first optical fiber 100 is inserted into the fiber insertion hole 11a, and the outer diameter of the first optical fiber 100 is four times or more from the first housing base 11 along the first guide groove 22 of the first guide portion 20. The position of the first optical fiber 100 is adjusted so that the first tip portion 100b protrudes in length. For example, when the outer diameter of the first optical fiber 100 is 0.5 mm, the length of the first tip portion 100 b protruding from the first housing base 11 is adjusted to 2 mm or more.
The adjustment of the mounting position of the first optical fiber 100 is performed, for example, by placing a cylindrical jig in the first guide groove 22 and abutting the first optical fiber 100 against the jig.

  Finally, the first optical fiber 100 is fixed to the first housing 10 by the fixing mechanism of the first housing base 11, and the attachment of the first optical fiber 100 to the first housing 10 is completed.

Next, the second housing 40 will be described.
The second housing 40 is made of a synthetic resin material that can be elastically deformed without damaging the lock mechanism (not shown) and the second guide portion 50 even when repeatedly attached to and detached from the first housing 10. For example, PBT (polybutylene terephthalate) can be applied.

  The second housing 40 protrudes in a step-down manner from the second housing base 41 constituting the main body portion and the second housing base 41 so that the first optical fiber 100 and the second optical fiber 200 are aligned. In addition, a second alignment protrusion 42 that is a portion for aligning the first and second tip portions 100b and 200b is integrally formed.

  The second housing base 41 is a hole extending in parallel with the optical axis. The fiber insertion hole 41a for linearly inserting the second optical fiber 200 and the second optical fiber 200 are caulked, bonded, welded, etc. And a fixing mechanism (not shown) that is fixed to the two housings 40.

  The second alignment projecting portion 42 is an engagement that guides the engagement between the first housing 10 and the space where the first guide portion 20 can be inserted between the second guide portion 50 and the second guide portion 50. And a guide portion 60.

Since the second guide portion 50 guides the first tip portion 100b so as to be aligned with the axis of the second optical fiber 200, a second guide groove 52 is formed in the second guide surface 51 facing the first guide surface 21 in parallel. Has been.
The second guide portion 50 guides the second tip portion 200b protruding from the fiber insertion hole 41a to the outside of the second housing base portion 41 in the optical axis direction by the second guide groove 52, and also the tip surface of the second optical fiber 200. The first tip portion 100b is guided in a second guide groove 52 that extends ahead of 200a (hereinafter referred to as the second tip surface 200a).

Further, the second guide portion 50 is configured to be elastically deformed in a direction of narrowing the interval between the first guide groove 22 and the second guide groove 52.
The second guide portion 50 has a cantilever shape with a free end on the tip side, and protrudes from the second housing base portion 41.
More specifically, the second guide portion 50 can be elastically deformed by forming the thickness of the portion connected to the second housing base 41 thinner than the thickness around the tip portion. ing.

As shown in FIG. 2, the second guide groove 52 has a V-shaped cross section and is linearly formed from the base end portion to the tip end of the second guide portion 50.
The groove depth of the second guide groove 52 is adjusted so that the centers of the first optical fiber 100 and the second optical fiber 200 are located above the second guide surface 51 that is the groove upper edge surface.
The V-shaped apex angle of the second guide groove 52 may be adjusted to 90 degrees so that the first optical fiber 100 and the second optical fiber 200 are held by the second guide groove 52 under uniform pressure. .

The engagement guide part 60 has a guide sliding contact surface 60b extending parallel to the engagement direction so as to come into sliding contact with the outer surface on the back side of the first guide surface 21 of the first guide part 20.
The protruding end surface 60 a of the engagement guide portion 60 is abutted against the stepped portion 10 a between the first housing base 11 of the first housing 10 and the first alignment protruding portion 12, whereby the first housing 10 and the second housing 40. Are positioned in the engagement direction.

The second housing 40 has a surplus length absorption space 70 that is a space for deflecting and absorbing the surplus length of the second optical fiber.
The extra length absorption space 70 is a gap space formed between the protruding end surface of the first guide portion 20 and the second housing base 41 in a state where the first housing 10 and the second housing 40 are completely engaged. .

  In such a second housing 40, the second guide portion 50 and the engagement guide portion 60 protrude from the second tip surface 200a in the engagement direction. Thus, the second tip 200b is protected.

Next, a procedure for attaching the second optical fiber 200 to the second housing 40 will be described.
First, a not-shown covering portion that covers the terminal portion of the second optical fiber 200 is removed, and the second optical fiber 200 is cut so that the end surface of the second optical fiber 200 is smooth.

Thereafter, the second optical fiber 200 is inserted into the fiber insertion hole 41 a, and the second tip end portion 200 b is projected from the second housing base 41 along the second guide groove 52 of the second guide portion 50. The length of the second tip portion 200b to be projected here is that the second optical fiber 200 is bent as the second tip surface 200a is moved for engagement after the second tip surface 200a is abutted against the first tip surface 100a. Adjust with extra length as possible.
The attachment position of the second optical fiber 200 is adjusted by, for example, arranging a cylindrical jig in the second guide groove 52 and abutting the second optical fiber 200 against the jig.

  Finally, the second optical fiber 200 is fixed to the second housing 40 by the fixing mechanism of the second housing base 41, and the attachment of the second optical fiber 200 to the second housing 40 is completed.

  In the first housing 10 and the second housing 40, the first optical fiber 100 and the second optical fiber 200 are moved along the optical axis by the movement for engagement between the first housing 10 and the second housing 40. The first optical fiber 100 and the second optical fiber 200 are brought into contact with each other by narrowing the distance between the first guide groove 22 and the second guide groove 52 from the arrangement state in which the axis is shifted in the vertical direction. It is designed to be pinched in a state where

Further, when the first housing 10 and the second housing 40 are engaged, the second guide portion 50, the pressing portion 31, and the contact surfaces 31a and 50a are parallel to the optical axis direction.
Further, the contact surfaces 31a and 50a adjust the length in the optical axis direction to be longer than the moving distance due to the backlash of the first housing 10 and the second housing 40 in the optical axis direction.

  In addition, although not shown in figure, the 1st housing 10 and the 2nd housing 40 are integrated by the exterior case which surrounds these, for example.

Next, the operation until the first housing 10 and the second housing 40 of the optical connector 1 are engaged will be described with reference to FIGS. 3 and 4.
First, the engagement between the first housing 10 and the second housing 40 is started (see FIG. 3A). Specifically, the first guide portion 20 is started to be inserted between the second guide portion 50 and the engagement guide portion 60, and the second guide portion 50 is connected to the first guide portion 20 and the pressing protrusion 30. Insertion is started during. As a result, the second optical fiber 200 that has been guided by the second guide groove 52 only on one side is also guided in parallel to the optical axis by the first guide groove 22 on the other side.

  Thus, in the state where engagement is started, the first optical fiber 100 and the second optical fiber 200 are arranged in a state where the axes are shifted in the direction perpendicular to the optical axis. That is, the first guide groove 22 and the second guide groove 52 that face each other are spaced apart so as to shift the axes of the first optical fiber 100 and the second optical fiber 200. For this reason, even if the second tip portion 200b has a curl, the second tip portion 200b does not come into contact with the tip portion of the first guide portion 20.

Thereafter, when the first housing 10 and the second housing 40 are further moved in the engaging direction, the first and second tip surfaces 100a and 200a are brought into contact with each other (see FIG. 3B). In the movement until the first and second tip surfaces 100a and 200a are brought into contact with each other, the first optical fiber 100 in which only one side is guided by the first guide groove 22 is also the second guide groove 52 in the other side. Guided by.
Here, when the tip end portion of the second guide portion 50 is in sliding contact with the pressing guide inclined surface 31b of the pressing portion 31, the second guide portion 50 gradually increases the distance between the first guide groove 22 and the second guide groove 52. It is elastically deformed so as to be narrowed (see FIG. 4B).

  Further, since the first guide groove 22 and the second guide groove 52 facing each other are spaced apart so as to shift the axes of the first optical fiber 100 and the second optical fiber 200, the first tip portion Even when there is a curl in 100b, the first tip portion 100b does not come into contact with the tip portion of the second guide portion 50.

Thereafter, the first housing 10 and the second housing 40 are further moved in the engaging direction until the protruding end surfaces 30a and 60a of the pressing protrusion 30 and the engagement guide 60 are abutted with the stepped portions 10a and 40a. Move and lock by lock mechanism. This completes the engagement between the first housing 10 and the second housing 40 (see FIG. 3C).
Here, by moving the first housing 10 and the second housing 40 in the engagement direction in a state where the first and second tip surfaces 100a and 200a are abutted with each other, the second optical fiber 200 is moved. The surplus length is bent and deformed in the surplus length absorption space 70.

Further, when the distal end portion of the second guide portion 50 rides on the stepped upper surface 31a of the pressing portion 31, the second guide portion 50 is elastically deformed so as to further narrow the interval between the first guide groove 22 and the second guide groove 52. (See FIG. 4C).
For this reason, when the first housing 10 and the second housing 40 are completely engaged, the first and second tip portions 100b and 200b are connected to the first guide in a state where the first and second tip surfaces 100a and 200a are abutted. It is sandwiched between the groove 22 and the second guide groove 52.
As a result, the bent ridges of the first and second tip portions 100b and 200b are repaired so as to be directed in the optical axis direction, and the first and second tip portions 100b and 200b are held in an aligned state. It has become.

  Even when the first housing 10 and the second housing 40 are displaced by a distance R from the engagement completion position due to rattling in the optical axis direction as shown in FIG. Since the contact surfaces 31a and 50a between the first guide groove 22 and the pressing portion 31 are parallel to the optical axis direction, the distance between the first guide groove 22 and the second guide groove 52 is kept constant. For this reason, the state which the 1st and 2nd front-end | tip parts 100b and 200b were clamped in the state which faced | matched the 1st and 2nd front-end | tip surfaces 100a can be maintained.

  In the optical connector 1 according to the embodiment of the present invention, the first optical fiber 100 and the second optical fiber 200 are arranged in a direction perpendicular to the optical axis by the engagement of the first housing 10 and the second housing 40. Since the gap between the first guide groove 22 and the second guide groove 52 is narrowed, the first and second tip surfaces 100a and 200a are held in a state of abutting against each other. Even if the second tip portions 100b and 200b are bent, the first optical fiber 100 and the second optical fiber 200 are not connected to each other before the first guide groove 22 and the second guide groove 52 are guided. When contact with the housing is prevented and the first housing 10 and the second housing 40 are engaged, the first optical fiber 100 and the second optical fiber 200 are separated from each other. The first guide groove 22 and the second guide groove 52 that are narrowed align and hold the curled wrinkles of the first and second tip portions 100b and 200b while repairing them. Can be prevented from being damaged.

  Further, in the optical connector 1 according to the embodiment of the present invention, the first and second tip portions 100b and 200b are sandwiched between the first guide groove 22 and the second guide groove 52 by utilizing the elasticity of the second guide portion 50. Therefore, the clamping mechanism can be provided with a simple configuration.

  In addition, the optical connector 1 according to the embodiment of the present invention has a contact surface between the second guide portion 50 and the pressing portion 31 even when the first housing 10 and the second housing 40 rattle in the optical axis direction. Since 31a and 50a are parallel to the optical axis direction, the distance between the first guide groove 22 and the second guide groove 52 is kept constant, and the first and second tip surfaces 100a and 200a are brought into contact with each other. Since the state clamped in the state can be maintained, the optical connection loss can be surely suppressed.

  Further, the optical connector 1 according to the embodiment of the present invention can absorb the surplus length of the second optical fiber 200 by bending the second optical fiber 200 by the surplus length absorption space 70.

  In addition, although the optical connector 1 which concerns on the Example of this invention illustrated what the 1st guide groove 22 and the 2nd guide groove 52 have a V-shaped cross section, it is not restricted to this, The 1st and 2nd front-end | tip part Other shapes may be used as long as they can guide 100b and 200b so that their optical axes are aligned. For example, the first guide groove 22 and the second guide groove 52 may have a U-shaped cross section.

  In addition, the optical connector 1 according to the embodiment of the present invention exemplifies an optical connector 1 that forms a surplus length absorption space 70 that is a space to bend and absorb the surplus length of the second optical fiber 200 in the second housing 40. However, the present invention is not limited to this, and a surplus length absorption space that is a space for deflecting and absorbing the surplus length of the first optical fiber 100 and the second optical fiber 200 in the first housing 10 and / or the second housing 40 is provided. You may make it form. For example, an extra length absorption space may be formed in the first housing 10.

  Moreover, although the optical connector 1 which concerns on the Example of this invention illustrated the thing which narrows the space | interval of the 1st guide groove 22 and the 2nd guide groove 52 by elastically deforming the 2nd guide part 50, to this, Not limited to this, it is sufficient that the distance between the first guide groove 22 and the second guide groove 52 can be reduced by the movement for engagement between the first housing 10 and the second housing 40. That is, the distance between the first guide groove 22 and the second guide groove 52 may be narrowed by elastically deforming the first guide portion 20 instead of the second guide groove 52.

  The invention made by the present inventor has been specifically described based on the above-described embodiments of the invention. However, the present invention is not limited to the above-described embodiments of the invention and does not depart from the gist thereof. Various changes can be made.

DESCRIPTION OF SYMBOLS 1 Optical connector 10 1st housing 10a Step part 11 1st housing base 11a Fiber insertion hole 12 1st alignment protrusion 20 First guide part 21 1st guide surface 22 1st guide groove 30 Pressing protrusion 30a Projection end surface 31 Pressing part 31a Step upper surface (contact surface)
31b Press guide inclined surface 40 Second housing 40a Stepped portion 41 Second housing base 41a Fiber insertion hole 42 Second alignment protrusion 50 Second guide portion 50a Pressed surface (contact surface)
51 Second guide surface 52 Second guide groove 60 Engagement guide portion 60a Protruding end surface 60b Guide sliding contact surface 70 Excess length absorption space 100 First optical fiber 100a Tip surface 100b Tip portion 200 Second optical fiber 200a Tip surface 200b Tip portion

Claims (3)

A first housing, a first optical fiber accommodated in the first housing, a second housing engaged with the first housing, and a second optical fiber accommodated in the second housing; With the engagement between the first housing and the second housing, in the optical connector optically connected by abutting the tip surface of the first optical fiber and the tip surface of the second optical fiber,
The first housing is
In order to guide the tip portion of the second optical fiber so as to be aligned with the axis of the first optical fiber, the first guide portion having a first guide groove formed on a first guide surface parallel to the optical axis,
The second housing is
In order to guide the tip of the first optical fiber so as to align with the axis of the second optical fiber, a second guide groove is formed on the second guide surface facing the first guide surface in parallel. A guide part ;
Projected to a position where the second guide portion and the tip are aligned in the optical axis direction so that a space in which the first guide portion can be inserted is formed between the second guide surface and the first guide surface. An engagement guide portion having a guide sliding contact surface extending in the optical axis direction so as to be in sliding contact with the outer surface of the first guide portion on the back side;
Have
The second guide part is
The first guide groove and the second guide groove are configured to be elastically deformable in a direction in which the interval is narrowed,
The first housing is
A pressing portion that presses the second guide portion in a direction of narrowing the interval between the first guide groove and the second guide groove;
The first optical fiber and the second optical fiber are:
The first housing and the second housing are engaged while the first guide portion is slidably contacted with the guide slidable contact surface, so that the shaft is displaced in the direction perpendicular to the optical axis. The gap between the first guide groove and the second guide groove is narrowed, so that the first optical fiber and the second optical fiber are sandwiched in a state where the front end surfaces of each other are abutted with each other. Optical connector. When the first housing and the second housing are engaged, the contact surface between the second guide portion and the pressing portion is
The optical connector according to claim 1, wherein the optical connector is parallel to the optical axis direction . The first housing and / or the second housing are:
3. The optical connector according to claim 1, further comprising a space for deflecting and absorbing an extra length of the first optical fiber and the second optical fiber . 4.

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