JP4131687B2 - Optical connector and optical connector box - Google Patents

Description

  The present invention relates to an optical connector that enables simple assembly. In particular, the present invention relates to an optical connector for connecting an optical fiber, which can be assembled on site where an optical communication device is installed.

  With the spread of broadband communication services in recent years, optical communication systems have been introduced into access networks. In the access network, a small optical connector is required to install a large amount of optical fibers in a narrow space. In addition, an optical connector that can be easily attached to the end of the cut optical fiber by cutting the optical fiber in order to connect to the optical communication device has become necessary.

There are fusion splicing and mechanical splicing to connect optical fibers at the site where the optical communication device is installed, but these connections use expensive and special tools and can only be performed by skilled workers. Further, since the optical connector connection requires an optical connector to be attached to the end of the optical fiber, conventionally, an optical connector assembled with a special tool has been developed. As conventional optical connectors, optical connectors that are brought into contact with each other so that the tips of optical fiber wires abut against each other have been developed (see, for example, Patent Document 1 and Patent Document 2).
JP 2000-47061 A JP 2002-277682 A

  Any of the conventional optical connectors can be installed by cutting the optical fiber on site, but a special tool is required for assembly or it cannot be installed in a narrow place. was there.

  Therefore, an object of the present invention is to provide an optical connector having a structure that can be easily assembled without using a special tool and can be installed in a narrow place.

To achieve the above object, the first invention of the present application includes an optical connector housing having an insertion port for inserting an optical fiber, a holding member for holding the optical fiber to be inserted in a predetermined position, A holding member that holds the tip of the optical fiber to be inserted to the holding member, and a part thereof are curved, and when the button is released, the bent part is extended to repel the holding member with a repulsive force. comprising a plate-like presser spring to press on the holding member direction, even push when pushed to diminish the repulsive force of the spring, and a said button to recover to the original position by the repulsive force of the spring even pressing upon opening, said button And the said insertion port is arrange | positioned on the same surface of the said optical connector housing | casing , It is an optical connector characterized by the above-mentioned.

  The first invention of the present application may include an optical connector in which the pressing spring also generates a pressing force for pressing the pressing member in the insertion direction of the optical fiber to be inserted when the button is opened.

  The first invention of the present application may include an optical connector in which the holding member holds the optical fiber strand to be inserted by a V-groove formed on a holding side surface.

  In the first invention of the present application, when the V-groove of the holding member holds the optical fiber strand to be inserted, a depth at which a part of the optical fiber strand to be inserted protrudes from a surface on the side held by the holding member. An optical connector may also be included.

  The first invention of the present application may include an optical connector in which the pressing member presses the inserted optical fiber with a V-groove formed on a pressing side surface.

  The first invention of the present application includes an optical connector having a depth at which a part of the optical fiber to be inserted protrudes from a surface of the pressing member to be pressed when the optical fiber to be inserted is pressed. There is.

  The first invention of the present application may include an optical connector in which the pressing member is made of silicon rubber or hard plastic.

  The first invention of the present application may include an optical connector that further includes a stopper that presses against an end surface of the inserted optical fiber to lock the inserted optical fiber in a predetermined position.

  The first invention of the present application may also include an optical connector that is an optical fiber to be connected that is inserted from a direction opposite to the insertion port and fixed to the V groove of the holding member.

  The first invention of the present application may include an optical connector in which the stopper is a ferrule having a connected optical fiber core wire in a hole.

  In the first invention of the present application, a double-cut ferrule having an optical fiber core is housed on one side inside, and a space capable of housing a ferrule having a connected optical fiber core on the other side is provided. A sleeve may be further included, and the stopper may include an optical connector which is the double-cut ferrule.

  The first invention of the present application may also include an optical connector having a tapered guide in which the insertion port narrows toward the inside of the optical connector housing and leads to the V groove of the holding member.

  The first invention of the present application may include an optical connector in which the button and the insertion port are arranged on the same surface of the optical connector housing.

  A second invention of the present application is an optical connector box in which a plurality of optical connectors according to the first invention of the present application are installed such that the insertion port is on the outer surface side.

In the present specification, the optical fiber core means an optical fiber having a core and a clad of an optical fiber and having no protective coating. An optical fiber strand means the optical fiber which covered the optical fiber core wire with the primary coating. The double-cut ferrule is a ferrule whose both ends are polished so that another ferrule can be connected to both ends of the ferrule. An optical connector box refers to an apparatus that deploys a plurality of optical connectors and connects optical fibers.
These configurations can be combined as much as possible.

The optical connector of the present invention can be easily assembled without using a special tool, and can ensure good connection characteristics.
In addition, since the present optical connector has a structure that can be installed in a narrow space, an optical connector box using the present optical connector can be miniaturized and mounted with high density.

(Embodiment 1)
The present embodiment is an optical connector for connecting optical fiber strands. Embodiments for carrying out the present invention are shown in FIGS. 1, 2, and 3, 10 is an optical connector, 12 is an optical connector housing, 14 is a holding member, 16 is a pressing member, 18 is a pressing spring, 20 is a button, 22 is an insertion port, 24 is a guide, Reference numeral 26 denotes a stopper, 28 denotes a guide, 30 denotes an optical fiber core, 31 denotes a fixing member, and 32 denotes an optical fiber.

  FIG. 1 shows a state when the button 20 is pushed in, FIG. 2 shows a state when the button is released, and FIG. 3 shows a cross section taken along line A-A 'in FIG. 1 and 2, the optical connector housing 12 includes an insertion port 22 into which an optical fiber strand 32 is inserted, and the holding member 14 holds the optical fiber strand 32 to be inserted into the insertion port 22 in a predetermined position. . The holding member 16 holds the distal end portion of the optical fiber 32 inserted into the insertion port 22 against the holding member 14. The holding spring 18 presses the holding member 16 in the direction of the holding member 14 by the repulsive force of the spring. When the button 20 is pushed in, the repulsive force of the pressing spring 18 is reduced so that the pressing member 16 is separated from the holding member 14, and when the button 20 is released, the original position is restored by the repulsive force of the pressing spring 18.

  In FIG. 2, it is preferable that the shape of the guide 28 in the vicinity of the insertion port is a tapered shape that narrows toward the inside of the optical connector housing. By making the shape tapered, the optical fiber strand 32 to be inserted can be easily inserted. To. Further, it is preferable to provide a stopper that can lock the tip of the inserted optical fiber 32 at a predetermined position. This is because the inserted optical fiber 32 can be pressed against the stopper 26 and the tip of the optical fiber 32 can be positioned with high accuracy. Furthermore, if the end face of the optical fiber 30 to be connected inserted from the opposite direction to the optical fiber 32 is disposed at the position of the stopper 26, the connection with the optical fiber 32 can be improved. At this time, the holding spring 18 is arranged so that the holding member 16 pushes the optical fiber 32 in the insertion direction of the optical fiber 32 by the repulsive force of the holding spring 18. For example, when the button 20 is pushed, a part of the pressing spring 18 is curved, and when the pressing member 16 presses the optical fiber 32 when the button 20 is released, the curved one of the pressing spring 20 is curved. By extending the portion, the pressing spring 18 can also generate a pressing force that presses the pressing member 16 in the insertion direction of the optical fiber 32.

  In FIG. 3, the holding member 14 holds the inserted optical fiber 32 in a predetermined position. The holding member 14 is preferably formed with a V-groove on the holding side surface, and the optical fiber 32 is held in the V-groove. The V-groove of the holding member 14 can increase the positional accuracy and enables accurate alignment with the connected optical fiber. The depth of the V groove of the holding member 14 is preferably such that when the inserted optical fiber 32 is held, a part of the optical fiber 32 protrudes from the holding surface of the holding member 14. This is because there is no need to process the pressing member 16 to be described later so as to match the V-groove of the holding member 14, and the holding position can be determined with high accuracy even if the pressing member is flat.

  The pressing member 16 presses the distal end portion of the inserted optical fiber 32 in the direction of the holding member 14. It is preferable that a V-groove is formed on the surface to be pressed by the pressing member 16 and the optical fiber 32 is suppressed by the V-groove. The contact groove can be increased by the V groove of the pressing member 16 and the pushing force of the holding spring 18 can be effectively transmitted to the optical fiber 32. The depth of the V groove of the pressing member 16 is preferably such that when the inserted optical fiber 32 is pressed, a part of the optical fiber 32 protrudes from the pressing surface of the pressing member 16. This is because there is no need to process the holding member 14 so as to match the V groove of the pressing member 16.

  The pressing member 16 may be easily positioned by being guided by a guide 28 in the vicinity of the pressing member 16. The pressing member 16 is preferably made of silicon rubber or hard plastic. This is because it functions as a buffer material in contact with the optical fiber strand 32.

  Next, the operation of the optical connector will be described. When the button 20 is pushed in, the repulsive force of the pressing spring 18 is reduced, and the pressing member 16 is separated from the holding member 14 (FIG. 1). In this state, the optical fiber 32 is inserted from the insertion port 22. The inserted optical fiber 32 is guided to the V groove of the holding member 14 by the guide 28 of the insertion port 22, and the end face of the optical fiber 32 is pressed against the stopper 26. When the button 20 is released in this state, the pressing spring 18 presses the pressing member 16 in the direction of the holding member 14 with a repulsive force (FIG. 2). At the same time, the holding member 16 is pushed in the direction in which the optical fiber 32 is inserted. The tip of the optical fiber 32 is pressed in the direction of the holding member 14, and at the same time, is pushed into the optical fiber 30 to be connected, enabling optical connection between the optical fiber 32 and the optical fiber 30. .

  As a method for fixing the optical fiber core 30 to the fixing member 31, the optical fiber core wire 30 is inserted from the side opposite to the insertion direction of the optical fiber strand 32, and the tip of the optical fiber core wire 30 is positioned at the stopper 26. When it comes, the tip of the optical fiber core 30 can be fixed at the position of the stopper by fixing or caulking the optical fiber core 30 with an adhesive. Alternatively, the optical fiber core wire 30 is opposite to the insertion direction of the optical fiber strand 32 in a state where the temporary optical fiber strand is inserted from the insertion port 22 and the tip of the temporary optical fiber strand is pressed against the stopper 26. By inserting the optical fiber core wire 30 with an adhesive or caulking the optical fiber core wire 30 when the tip of the optical fiber core wire 30 abuts against the temporary optical fiber strand. The tip of the optical fiber core wire 30 can be fixed at the position of the stopper. After the optical fiber core wire 30 is fixed, the temporary optical fiber strand is pulled out.

  In the present embodiment, the shape of the presser spring 18 has been shown as an example as shown in FIGS. 1 and 2, but is not limited to this example. Any shape can be used as long as the pressing member can be pressed in the direction of the holding member by the repulsive force when the button is released, and the button can be restored by the repulsive force of the pressing spring when the button is released. Furthermore, the shape may be any shape that also generates a pushing force for pushing in the insertion direction of the optical fiber strand into which the pressing member is inserted when the button is opened.

  In the present embodiment, the shape of the button 20 has been shown as an example as shown in FIGS. 1 and 2, but is not limited to this example. Any shape that reduces the repulsive force of the presser spring when pushed in and restores the original position by the repulsive force of the presser spring when released is acceptable.

  As described above, the optical connector described in this embodiment can be easily assembled without using a special tool, and good connection characteristics can be ensured.

(Embodiment 2)
The present embodiment is an optical connector provided with a stopper different from that of the first embodiment. An embodiment for carrying out the present invention is shown in FIG. In FIG. 4, 10 is an optical connector, 12 is an optical connector housing, 14 is a holding member, 16 is a pressing member, 18 is a pressing spring, 20 is a button, 22 is an insertion port, 24 is a guide, 26 is a stopper, and 28 is A guide, 31 is a fixing member, and 34 is an optical fiber.

  FIG. 4 is a diagram showing a state when the button 20 is pushed. 4, the optical connector housing 12 includes an insertion port 22 into which an optical fiber strand 32 is inserted, and the holding member 14 holds the optical fiber strand 32 to be inserted into the insertion port 22 at a predetermined position. The holding member 16 holds the distal end portion of the optical fiber 32 inserted into the insertion port 22 against the holding member 14. The holding spring 18 presses the holding member 16 in the direction of the holding member 14 by the repulsive force of the spring. When the button 20 is pushed in, the repulsive force of the pressing spring 18 is reduced so that the pressing member 16 is separated from the holding member 14, and when the button 20 is released, the original position is restored by the repulsive force of the pressing spring 18.

  In FIG. 4, a connected optical fiber 34 inserted from the opposite direction to the optical fiber 32 is used as a stopper that can lock the tip of the inserted optical fiber 32 at a predetermined position. When the end face of the connected optical fiber 30 inserted from the opposite direction to the optical fiber 32 is disposed as the stopper 26, the connection between the optical fiber 32 and the connected optical fiber 34 can be improved. it can. Since the outer diameters of the optical fiber 32 and the connected optical fiber 34 are the same, an improvement in connection characteristics can be expected if they are arranged on a common V-groove.

  As a method of fixing the optical fiber 34 to the fixing member 31, the optical fiber 34 is inserted from the side opposite to the insertion direction of the optical fiber 32, and the tip of the optical fiber 34 is positioned at the stopper 26. When coming, the tip of the optical fiber 34 can be fixed at the position of the stopper by being fixed to the optical fiber 34 with an adhesive or caulking. Alternatively, the temporary optical fiber strand is inserted from the insertion port 22, and the optical fiber strand 34 is opposite to the insertion direction of the optical fiber strand 32 with the tip of the temporary optical fiber strand being at the position of the stopper 26. When the tip of the optical fiber strand 34 abuts against the temporary optical fiber strand, the optical fiber strand 34 is fixed with an adhesive or the optical fiber strand 34 is caulked. The tip of the optical fiber 34 can be fixed at the position of the stopper. After fixing the optical fiber strand 34, the temporary optical fiber strand is pulled out. If a convex portion is provided at the position of the stopper, since the outer diameters of the optical fiber strands to be attached are the same, a good optical fiber connection cannot be made. Therefore, it is desirable to provide a line or a recess as a marker at the position of the stopper.

  As described above, the optical connector described in this embodiment can be easily assembled without using a special tool, and good connection characteristics can be ensured. Furthermore, the structure of the optical connector can be simplified by using the optical fiber to be connected as a stopper.

(Embodiment 3)
The present embodiment is an optical connector provided with a stopper different from that of the first embodiment. An embodiment for carrying out the present invention is shown in FIG. In FIG. 5, 10 is an optical connector, 12 is an optical connector housing, 14 is a holding member, 16 is a pressing member, 18 is a pressing spring, 20 is a button, 22 is an insertion port, 24 is a guide, 26 is a stopper, and 28 is A guide, 31 is a fixing member, 36 is a ferrule, and 38 is an optical fiber core.

  FIG. 5 is a diagram showing a state when the button 20 is pushed. In FIG. 5, the optical connector housing 12 includes an insertion port 22 into which an optical fiber strand 32 is inserted, and the holding member 14 holds the optical fiber strand 32 to be inserted into the insertion port 22 at a predetermined position. The holding member 16 holds the distal end portion of the optical fiber 32 inserted into the insertion port 22 against the holding member 14. The holding spring 18 presses the holding member 16 in the direction of the holding member 14 by the repulsive force of the spring. When the button 20 is pushed in, the repulsive force of the pressing spring 18 is reduced so that the pressing member 16 is separated from the holding member 14, and when the button 20 is released, the original position is restored by the repulsive force of the pressing spring 18.

  In FIG. 5, a connected optical fiber core 38 is provided as a stopper capable of locking the tip of the inserted optical fiber 32 at a predetermined position, and a ferrule 36 inserted from the opposite direction to the inserted optical fiber 32. Is used. When the end face of the ferrule 36 inserted from the opposite direction to the optical fiber strand 32 is disposed as the stopper 26, the connection between the optical fiber strand 32 and the connected optical fiber core wire 38 can be improved. Since the connected optical fiber core wire 38 is protected by a ferrule, the ferrule 36 can be easily fixed to the fixing member 31.

  As a method of fixing the ferrule 36 to the fixing member 31, there is a method of providing a second stopper that stops the ferrule 36 at a predetermined position. When the ferrule 36 is inserted from the side opposite to the insertion direction of the optical fiber strand 32 and the tip of the ferrule 36 comes into contact with a second stopper that stops the ferrule 36 at a predetermined position, the ferrule 36 is fixed to the ferrule 36 with an adhesive. The tip of the ferrule 36 can be fixed at the position of the second stopper by staking or caulking. Alternatively, the temporary optical fiber is inserted from the insertion port 22, and the ferrule 36 is inserted from the side opposite to the insertion direction of the optical fiber 32 in a state where the tip of the temporary optical fiber is at the position of the stopper 26. When the tip of the ferrule 36 abuts against the provisional optical fiber, the ferrule 36 is fixed with an adhesive or the ferrule 36 is caulked to fix the tip of the ferrule 36 at the stopper position. be able to. After fixing the ferrule 36, a temporary optical fiber strand is pulled out.

  As described above, the optical connector described in this embodiment can be easily assembled without using a special tool, and good connection characteristics can be ensured. Furthermore, the structure of the optical connector can be simplified by using the optical fiber to be connected as a stopper.

(Embodiment 4)
The present embodiment is an optical connector provided with a stopper different from that of the first embodiment. An embodiment for carrying out the present invention is shown in FIG. In FIG. 6, 10 is an optical connector, 12 is an optical connector housing, 14 is a holding member, 16 is a pressing member, 18 is a pressing spring, 20 is a button, 22 is an insertion port, 24 is a guide, 26 is a stopper, and 28 is A guide, 31 is a fixing member, 37 is a double-cut ferrule, 40 is an optical fiber core wire, and 42 is a sleeve.

  FIG. 6 is a diagram showing a state when the button 20 is pushed. In FIG. 6, the optical connector housing 12 includes an insertion port 22 into which an optical fiber strand 32 is inserted, and the holding member 14 holds the optical fiber strand 32 to be inserted into the insertion port 22 at a predetermined position. The holding member 16 holds the distal end portion of the optical fiber 32 inserted into the insertion port 22 against the holding member 14. The holding spring 18 presses the holding member 16 in the direction of the holding member 14 by the repulsive force of the spring. When the button 20 is pushed in, the repulsive force of the pressing spring 18 is reduced so that the pressing member 16 is separated from the holding member 14, and when the button 20 is released, the original position is restored by the repulsive force of the pressing spring 18.

  In FIG. 6, an optical fiber core 40 is provided as a stopper capable of locking the tip of the inserted optical fiber 32 in a predetermined position, and a double-cut ferrule 37 inserted from the opposite direction to the inserted optical fiber 32 is shown. Use. The optical connector 10 includes a sleeve 42 in a fixing member 31, a double-cut ferrule 37 having an optical fiber core 40 on one side inside the sleeve 42, and an optical fiber to be connected on the other side inside the sleeve 42. A space capable of accommodating a ferrule having a core wire is provided. When the end face of the double cut ferrule 37 inserted from the opposite direction to the optical fiber 32 is disposed as the stopper 26, the connection between the optical fiber 32 and the optical fiber 40 can be improved. Since the optical fiber core wire 40 is protected by the double cut ferrule 37, the double cut ferrule 37 can be easily fixed to the fixing member 31. Further, since the ferrule having the optical fiber to be connected can be inserted from the other side inside the sleeve 42, the connected side can be connected by an optical connector having a ferrule.

  As a method of fixing the double-cut ferrule 37 to the fixing member 31, there is a method of providing a second stopper that stops the double-cut ferrule 37 at a predetermined position. The double-cut ferrule 37 is inserted from the side opposite to the insertion direction of the optical fiber strand 32, and the double-cut ferrule 37 is bonded when the tip of the double-cut ferrule 37 comes into contact with the second stopper that stops the double-cut ferrule 37 at a predetermined position. By fixing or caulking with an agent, the tip of the double-cut ferrule 37 can be fixed at the position of the stopper. Alternatively, with the provisional optical fiber strand inserted from the insertion port 22 and the tip of the provisional optical fiber strand being at the position of the stopper 26, the double-cut ferrule 37 is inserted from the side opposite to the insertion direction of the optical fiber strand 32. When the tip of the double-cut ferrule 37 is abutted against the temporary optical fiber, the double-cut ferrule 37 is fixed with an adhesive or the double-cut ferrule 37 is caulked to stop the tip of the double-cut ferrule 37. Can be fixed in the position. After fixing the double-cut ferrule 37, the temporary optical fiber is pulled out.

  As described above, the optical connector described in this embodiment can be easily assembled without using a special tool, and good connection characteristics can be ensured. Furthermore, the structure of the optical connector can be simplified by using the optical fiber to be connected as a stopper.

(Embodiment 5)
The present embodiment is an optical connector box in which a plurality of optical connectors described in the above-described embodiments are arranged. Embodiments for carrying out the present invention are shown in FIGS. 7 and 8, 10 is an optical connector, 12 is an optical connector housing, 20 is a button, 22 is an insertion slot, 24 is a guide, and 44 is an optical connector box.

  FIG. 7 is an external view of the optical connector applied to the optical connector box of the present invention as viewed from the insertion port. The button 20 and the insertion port 22 are disposed on the same surface of the optical connector housing 12. FIG. 8 shows an optical connector box in which a plurality of such optical connectors 10 are installed so that the buttons 20 and the insertion ports 22 are on the outer surface side.

  The optical connector shown in FIG. 7 has a configuration in which a button is arranged on the same surface as the insertion port of the optical fiber, and the optical fiber can be connected by operating the button from outside the optical connector housing without touching the inside of the optical connector. Therefore, even if a plurality of optical connectors are juxtaposed as shown in FIG. 8, there is no problem in the operability of the optical connector, and the optical connector box can be miniaturized and mounted with high density.

  In the example of FIG. 8, the optical connectors are arranged in one row, but the arrangement is not restricted to such an arrangement. Moreover, you may arrange | position an optical connector in the several surface of an optical connector box.

  The optical connector and the optical connector box of the present invention are not only applied to optical communication devices such as optical network devices and optical fiber connection devices, but also devices for connecting optical fibers such as connection of home appliances, wiring in vehicles, wiring in aircrafts, etc. It can also be applied to.

It is sectional drawing of the optical connector which connects an optical fiber strand, Comprising: It is a state when the button 20 is pushed in. It is sectional drawing of the optical connector which connects an optical fiber strand, Comprising: It is a state when the button 20 is open | released. It is a figure which shows the cross section in the A-A 'line | wire in FIG. It is sectional drawing of the optical connector which connects an optical fiber strand, Comprising: It is a state when the button 20 is pushed in. It is sectional drawing of the optical connector which connects an optical fiber strand, Comprising: It is a state when the button 20 is pushed in. It is sectional drawing of the optical connector which connects an optical fiber strand, Comprising: It is a state when the button 20 is pushed in. It is the external shape seen from the insertion port of the optical connector applied to the optical connector box of this invention. This is an optical connector box in which a plurality of optical connectors 10 are installed so that the buttons 20 and the insertion ports 22 are on the outer surface side.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Optical connector 12 Optical connector housing 14 Holding member 16 Pressing member 18 Pressing spring 20 Button 22 Insert port 24 Guide 26 Stopper 28 Guide 30 Optical fiber core wire 31 Fixing member 32 Optical fiber strand 34 Optical fiber strand 36 Ferrule 37 Both ends Ferrule 38 Optical fiber core 40 Optical fiber core 42 Sleeve 44 Connector box

Claims (14)

An optical connector housing having an insertion port for inserting an optical fiber;
A holding member for holding the inserted optical fiber in a predetermined position;
A holding member that holds the tip of the inserted optical fiber to the holding member;
A plate-shaped presser spring that presses the pressing member in the direction of the holding member with a repulsive force when the part is curved and the curved part extends when the button is released ;
The button that reduces the repulsive force of the presser spring when pressed, and recovers to the original position by the repulsive force of the presser spring when opened ,
The optical connector, wherein the button and the insertion port are arranged on the same surface of the optical connector housing .   2. The optical connector according to claim 1, wherein the pressing spring also generates a pressing force for pressing the pressing member in an insertion direction of the optical fiber to be inserted when the button is opened.   The optical connector according to claim 1, wherein the holding member holds the optical fiber strand to be inserted by a V-groove formed on a holding side surface.   The V groove of the holding member has a depth that a part of the optical fiber strand to be inserted protrudes from a surface on the holding side of the holding member when the optical fiber strand to be inserted is held. The optical connector according to claim 3.   5. The optical connector according to claim 1, wherein the pressing member presses the optical fiber strand to be inserted by a V groove formed on a pressing side surface.   The V groove of the pressing member has a depth that a part of the optical fiber strand to be inserted protrudes from the pressing side surface of the pressing member when the optical fiber strand to be inserted is pressed. The optical connector according to claim 5.   The optical connector according to claim 1, wherein the pressing member is made of silicon rubber or hard plastic.   8. The optical connector according to claim 1, further comprising a stopper that presses against an end face of the inserted optical fiber to lock the inserted optical fiber in a predetermined position. 9. .   The optical connector according to claim 8, wherein the stopper is an optical fiber to be connected that is inserted from a direction opposite to the insertion port and fixed to the V groove of the holding member.   The optical connector according to claim 8, wherein the stopper is a ferrule having an optical fiber to be connected in a hole.   The stopper further includes a sleeve having a double-sided ferrule having an optical fiber core on one side inside, and having a space capable of accommodating a ferrule having an optical fiber core to be connected on the other side, The optical connector according to claim 8, wherein the ferrule is a double-cut ferrule.   12. The optical connector according to claim 1, wherein the insertion port has a tapered guide that narrows toward the inside of the optical connector housing and leads to the V groove of the holding member.   The optical connector according to claim 1, wherein the button and the insertion port are disposed on the same surface of the optical connector housing. An optical connector box in which a plurality of the optical connectors according to claim 1 are installed such that the insertion port is on the outer surface side.

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