JP2001215362A - Optical fiber connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a highly reliable optical fiber connector that prevents damage to the end face of an optical fiber and that eliminates wrong connection in connecting plural optical fibers. SOLUTION: The optical fiber connector is equipped with magnetic bodies 2a, 2b having holes 14a, 14b for inserting optical fibers 1a, 1b; the magnetic bodies 2a, 2b are provided with the N pole and the S pole on the faces 15a, 15b connecting with the opposite optical fiber connectors 16a, 16b; and the optical fibers 1a, 1b are fixed on the magnetic bodies 2a, 2b so that the optical axis becomes perpendicular to the line connecting the two poles. The end face of the optical fibers 1a, 1b is suitably arranged on the center of the connecting faces 15a, 15b of the optical fiber connectors 16a, 16b. It is also possible that, with plural holes drilled on the magnetic bodies, a plurality of optical fibers are inserted and fixed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an optical fiber connector, and more particularly, to an optical fiber connector using a magnetic material.

[0002]

2. Description of the Related Art Conventionally, in order to easily and accurately connect an optical fiber, an optical fiber connector using a magnetic material has been proposed, for example, in Japanese Patent Application Laid-Open Nos. 60-164709 and 60-0742. I have.

FIG. 13 is a sectional view showing an example of a conventional optical fiber connector. The optical fiber 1r has a mirror-finished end face, and the magnetic pole of a cylindrical magnetic body 13a is S
The straight line connecting the pole and the N pole and the central axis of the cylindrical hole 14u are configured to be parallel. And the optical fiber 1r
Is passed through the hole 14u of the cylindrical magnetic body 13a, and is fixed with an adhesive or the like to form the optical fiber connector 16t. Here, the optical axis of the optical fiber 1r and the magnetic body 13a
Is fixed so as to coincide with the center axis. Similarly, an optical fiber connector 16u is composed of the optical fiber 1s and the cylindrical magnetic body 13b. The optical fiber connector connection surface 1 of these optical fiber connectors 16t and 16u
The magnetic poles of 5t and 15u are configured such that the magnetic poles are different from each other.

Next, the operation of the optical fiber connector having the above configuration will be described with reference to FIG.

[0005] Optical fiber connector connection surfaces 15t, 15u
The cylindrical magnetic bodies 13a, 1
The optical fiber connectors 16t and 16u to which 3b is fixed are
When the poles are brought closer, the magnetic fields of the individual magnetic bodies 13a and 13b attract each other so that the central axes of the magnetic bodies match. By utilizing this action, the cylindrical magnetic bodies 13a, 13a
b, the mirror-like end faces of the optical fibers 1r and 1s fixed are connected. Here, by aligning the optical axes of the optical fibers 1r and 1s with the central axes of the cylindrical magnetic members 13a and 13b, a detachable optical fiber connector with low loss can be realized.

[0006]

However, in the above-mentioned conventional optical fiber connector, the end faces of the optical fiber are brought into contact with each other in order to reduce the loss at the time of connection. There has been a problem that the end face of the optical fiber is damaged by friction, or the end face of the optical fiber is damaged by foreign matter such as dust adhered to the end face of the optical fiber, resulting in a large connection loss.

In the conventional optical fiber connector, the magnetic pole at the end face of the optical fiber connector is N or S.
Since only one magnetic pole is used, if a plurality of optical fiber connectors are used side by side, connectors with different magnetic poles on the end faces of the optical fiber connectors can all be connected due to the attractive force of the magnetic material. There is a problem that there is a risk of doing so. On the other hand, if the magnetic poles on the end face of the optical fiber connector are the same, the repulsive force of the magnetic material causes
There was a problem that optical fibers could not be connected.

Therefore, the present invention has been made in view of the above-mentioned problems in the conventional optical fiber connector,
An object of the present invention is to provide a highly reliable optical fiber connector that can prevent damage to an end face of an optical fiber, does not make a wrong connection even when connecting a plurality of optical fibers, and has a high reliability.

Further, the present invention further comprises connectors which can be attached and detached, optical fibers can be connected only by bringing the connectors close to each other, operability is good, the structure is simple, and the number of components is small. Therefore, an object of the present invention is to provide an optical fiber connector which has high productivity, can easily clean the end face of the optical fiber, and has good maintainability.

[0010]

In order to achieve the above object, an invention according to claim 1 is an optical fiber connector comprising a magnetic body having a hole through which an optical fiber is inserted, wherein the magnetic body is a counterpart. The optical fiber connector is provided with an N pole and an S pole on a connection surface thereof, and the optical fiber is fixed to the magnetic body so that an optical axis is perpendicular to a straight line connecting the magnetic poles. .

According to the first aspect of the present invention, the connectors can be attached and detached, and the optical fibers can be connected only by bringing the connectors closer together, so that the operability is improved.
Since the optical fiber and the magnetic body whose straight line connecting the N pole and the S pole is perpendicular to the optical axis are provided, two optical fiber connectors are connected only in a certain direction, and the rotation of the optical fiber connector causes the optical fiber to rotate. The end face is not damaged.

The optical fiber connector has a simple structure and is composed of a small number of parts, so that the productivity is high, the end face of the optical fiber can be easily cleaned, and the maintainability is good.

The invention according to claim 2 is characterized in that an end face of the optical fiber is arranged at the center of the connection face of the optical fiber connector.

Thus, it is possible to prevent a displacement between the optical fiber mounting position and the optical axis, and to reduce coupling loss when the optical fiber connector is connected.

According to a third aspect of the present invention, the magnetic body has a hole through which a plurality of optical fibers are inserted and fixed.

According to the third aspect of the present invention, since a plurality of optical fibers are inserted and fixed in the magnetic body having both magnetic poles on the connection surface, a plurality of optical fibers can be simultaneously formed by a small optical fiber connector. Optical fibers can be connected without erroneous connection.

According to a fourth aspect of the present invention, a convex portion is formed on the connecting surface of one optical fiber connector so as to partition the adjacent hole, and the convex portion is formed on the connecting surface of the other optical fiber connector. In addition to partitioning the hole, a recess is formed to engage with the projection.

According to the fourth aspect of the present invention, it is possible to prevent the light from wrapping around the connection point of the adjacent optical fiber by the convex portion provided so as to partition the adjacent hole.

According to a fifth aspect of the present invention, a concave portion is formed on the connection surface of each optical fiber connector to be connected to each other so as to partition the adjacent hole, and a light shielding block is interposed in the concave portion. Features.

According to the fifth aspect of the present invention, it is possible to prevent light from sneaking at the connection point of the adjacent optical fiber by the light shielding block interposed in the concave portion formed so as to partition the adjacent hole.

According to a sixth aspect of the present invention, there is further provided a sealing means for covering the outer peripheral surfaces of the two optical fiber connectors connected to each other.

Thus, it is possible to prevent foreign matter from entering the connection surface of the optical fiber connector.

The invention according to claim 7 is characterized in that the sealing means further comprises a locking means for preventing the two optical fiber connectors connected to each other from being detached.

Thus, the optical fiber connector can be prevented from being accidentally disconnected.

[0025]

Next, a specific example of an embodiment of an optical fiber connector according to the present invention will be described with reference to the drawings. In the following embodiments, an optical fiber connector partially using a plastic fiber will be described, but the type of the optical fiber according to the present invention is not particularly limited.

FIG. 1 shows a first embodiment of an optical fiber connector according to the present invention. This optical fiber connector comprises optical fiber connectors 16a and 16b.

The optical fiber connector 16a includes an optical fiber 1a having a mirror-like end face, a magnetic body 2a having a cylindrical hole 14a through which the optical fiber 1a is inserted, and an optical fiber 1a and a magnetic body 2a. And an adhesive 3a for bonding.

The magnetic body 2a is connected to the connection surface 1 of the optical fiber 1a.
The center of 5a is provided so that the center axis of the cylindrical hole 14a overlaps, and the magnetic pole of the magnetic body 2a is formed such that a straight line connecting the S pole and the N pole is perpendicular to the center axis of the cylindrical hole 14a. It is configured to be.

Both ends of the cylindrical hole 14a are formed in a tapered shape, for example, in order to secure a space for storing the burrs formed at the time of processing the end face of the plastic fiber and as an injection portion of the adhesive 3a.

The optical axis of the optical fiber 1a is
The end face of the optical fiber 1a and the connection surface 15a of the magnetic body 2a are fixed so as to coincide with the center axis of the optical fiber 4a.

As shown in FIG. 2, the magnetic body 2a is formed in a rectangular parallelepiped shape, and has a cylindrical hole 14a with respect to the connection surface 15a.
And the vertical accuracy of the central axis of the cylindrical hole 14a is easily ensured.

As shown in FIGS. 1 and 2, the other optical fiber connector 1 connected to the optical fiber connector 16a
6b is constituted by the optical fiber 1b, the magnetic body 2b, and the adhesive 3, similarly to the optical fiber connector 16a. Then, the connection surfaces 15a of the magnetic bodies 2a and 2b,
15b has a north pole and a south pole individually.

Next, the operation of the optical fiber connector having the above configuration will be described with reference to FIGS.

In FIG. 1, N is applied to the connection surfaces 15a and 15b.
Attraction between magnetic poles of the magnetic bodies 2a and 2b having a pole and an S pole causes the optical fiber connectors 16a,
6b are connected to each other.

Since the magnetic field at this time acts as shown in FIG. 3, the magnetic body 2a and the magnetic body 2b are connected so that their central axes coincide. Therefore, the optical axes of the optical fiber 1a and the optical fiber 1b fixed to the centers of the magnetic bodies 2a and 2b coincide with each other, and a lossy, detachable optical fiber connector can be obtained.

Further, since the optical axes of the optical fibers 1a and 1b are fixed perpendicular to the optical fiber connection surfaces 15a and 15b, the coupling loss due to the inclination of the optical axis is suppressed.

Further, N poles and S poles are provided on the connection surfaces 15a and 15b.
By configuring the optical fiber connectors 16a, 16b using the magnetic bodies 2a, 2b having the poles, the connection becomes possible only by matching the different magnetic poles of the respective magnetic bodies 2a, 2b, and after the connection, the optical fiber connectors 16a, 16b Does not rotate and does not damage the mirror-like end faces of the optical fibers 1a and 1b.

The optical fiber connectors 16a, 16b
However, since the magnetic field is orthogonal to the traveling direction of the light, there is a concern that the magnetic field may affect the light. However, if the magnetic field is such that the optical fiber connectors 16a and 16b are detachably connected to each other, the light There is no need to consider the effect on
Also, the influence of the magnetic field on light can be avoided by weakening the magnetism of the magnetic bodies 2a and 2b or by coating a magnetic field suppressor around the optical fibers 1a and 1b.

Next, a second embodiment of the optical fiber connector according to the present invention will be described with reference to FIG.

This optical fiber connector is composed of optical fiber connectors 16c and 16d. This embodiment differs from the first embodiment in that the magnetic members 2c and 2d are formed in a cylindrical shape. The other configuration is the same as that of the first embodiment.

That is, one optical fiber connector 16
c denotes a cylindrical magnetic body 2c, an optical fiber 1c, and an unillustrated adhesive, and the other optical fiber connector 16d includes an optical fiber 1d, a magnetic body 2d, and an unillustrated adhesive. Is done. In the magnetic bodies 2c and 2d, a straight line connecting the S pole and the N pole has a cylindrical hole 14c,
It is configured perpendicular to the central axis of 14d.

Next, the operation of the optical fiber connector having the above configuration will be described with reference to FIG.

Also in this embodiment, the connection surfaces 15c, 15
The magnetic fibers 2c, 2d having N and S poles at d.
c and 16d are connected to each other.

At this time, the magnetic body 2c and the magnetic body 2d are
They are connected so that their central axes coincide. Therefore, the optical axis of the optical fiber 1c fixed to the center of the magnetic bodies 2c and 2d and the optical axis of the optical fiber 1d coincide with each other, and a detachable optical fiber connector with small loss can be obtained.

Further, since the optical axes of the optical fibers 1c and 1d are fixed perpendicular to the optical fiber connection surfaces 15c and 15d, coupling loss due to the inclination of the optical axis is suppressed.

Further, N poles and S poles are provided on the connection surfaces 15c and 15d.
By configuring the optical fiber connectors 16c and 16d using the magnetic bodies 2c and 2d having the poles, the connection becomes possible only by combining the different magnetic poles of the magnetic bodies 2c and 2d, and the optical fiber connectors 16c and 16d are connected after the connection. Does not damage the mirror-like end faces of the optical fibers 1c and 1d.

As described above, the optical fiber connector 16
Although the optical fiber connectors 16c and 16d have the same cylindrical outer shape as the conventional optical fiber connector 16t, the optical fiber connectors 16c and 16d do not rotate, and the optical fibers 1d and 1c fixed at the center are not rotated. No end face is damaged.

Next, a third embodiment of the optical fiber connector according to the present invention will be described with reference to FIG.

The optical fiber connector 16 in this embodiment
g includes an optical fiber 1e, a magnetic substance 2g, and an adhesive 3d, as in the first embodiment, and further includes a sleeve 4 and an adhesive 3c having an inner diameter substantially equal to the outer diameter of the optical fiber 1e. Is added.

The magnetic body 2g has the same central axis as the central axis of the cylindrical hole 14h through which the optical fiber 1e is inserted.
A cylindrical hole 14g having an inner diameter substantially the same as the outer diameter of the sleeve 4 is bored halfway, and the sleeve 4 is vertically pressed into the hole 14g or bonded with an adhesive 3c. The optical fiber 1e is fixed to the sleeve 4 with an adhesive 3d.

The optical fiber connector 16g operates in the same manner as in the first embodiment, and furthermore, the optical fiber 1e is fixed to the sleeve 4 fixed perpendicularly to the connection surface 15g, so that the optical fiber connector 16g Is characterized in that coupling loss due to the inclination of the optical fiber 1e at the time of connection can be suppressed.

Next, a fourth embodiment of the optical fiber connector according to the present invention will be described with reference to FIG.

The magnetic body 2h in this embodiment is a rectangular parallelepiped magnetic body having the same shape as the magnetic body 2a of the optical fiber connector 16a according to the first embodiment shown in FIG.
h on a straight line connecting the N pole and the S pole, and
The cylindrical hole 1 is located symmetrically with respect to the center point of 5h.
4i and 14k are arranged, and provided so that the central axes of the cylindrical holes 14i and 14k are perpendicular to the connection surface 15h.

Optical fibers 1f, 1 having mirror end surfaces
h is the optical fiber 1f, the central axis of the cylindrical hole 14i, and the optical fiber 1f in the cylindrical holes 14i and 14k, respectively.
The optical axis of h is fixed so that the central axis of the cylindrical hole 14k coincides.

One optical fiber connector 16h composed of the magnetic body 2h and the optical fibers 1f and 1h has a magnetic pole different from that of the other optical fiber connector 16i similarly composed of the magnetic substance 2i and the optical fibers 1g and 1i. The optical fibers 1f and 1g are connected by an attractive force, and the optical axes of the optical fibers 1h and 1i coincide with each other, so that a detachable optical fiber connector with a small connection loss and a constant connection direction can be obtained.

Here, the optical fiber connector 16h is connected to 18
If an erroneous connection such as connecting to the optical fiber connector 16i by rotating it by 0 degrees is attempted, the magnetic body 2h and the magnetic body 2i have the same magnetic pole and cannot be connected by repulsion.

In this embodiment, the number of optical fibers can be further increased on a straight line connecting the N pole and the S pole of the magnetic bodies 2h and 2i.

As described above, the optical fiber connector 16
The h and 16i are easy to handle, are configured with a small number of components, and realize a small-sized connector capable of connecting a plurality of optical fibers at once without erroneous connection.

Next, a fifth embodiment of the optical fiber connector according to the present invention will be described with reference to FIG.

In this embodiment, as in the third embodiment,
Optical fiber 1f, 1g, 1h, 1i, magnetic material 2j, 2k
The magnetic material 2j has a protrusion 5a added thereto, and the magnetic material 2k has a recess 6a added thereto.

As shown in FIG. 8, the projection 5a is
5j is added to the middle of each of the end faces of the optical fiber 1f and the optical fiber 1h, and prevents the wraparound of the light caused by the leak light from the end face of the adjacent optical fiber which occurs when the optical fiber connector 16j and the optical fiber connector 16k are connected. To prevent.

On the other hand, the concave portion 6a is added to the middle of each of the end surfaces of the optical fiber 1g and the optical fiber 1i on the connection surface 15k, and engages with the convex portion 5a when the optical fiber connector 16j and the optical fiber connector 16k are connected. I do. At this time, the connection positions of the optical fibers are the magnetic material 2j and the magnetic material 2k.
Therefore, the fitting accuracy of the convex portion 5a and the concave portion 6a is not required, and the convex portion 5a and the concave portion 6a can be easily formed. It is to be noted that by increasing the fitting accuracy of the convex portion 5a and the concave portion 6a, the optical fiber 1f and the optical fiber
And the optical axis of the optical fiber 1h and the optical axis of the optical fiber 1i can be connected with higher accuracy.

Next, a sixth embodiment of the optical fiber connector according to the present invention will be described with reference to FIG.

In this embodiment, as in the case of the fifth embodiment, the magnetic member 2 of the same shape with the concave portions 6a and 6b added
n, an optical fiber connector 16 configured using 2o
When connecting the optical fiber connector 16 to the optical fiber connector 16, for example, a light shielding block 7 made of a light shielding material such as a black synthetic resin molding is fixed to one magnetic body 2 n.
The optical fiber connectors 16n and 16o that can prevent the optical signal from sneaking into an adjacent optical fiber with only one type of magnetic material by being sandwiched when the optical fiber connector 16o is connected to the optical fiber connector 16o. are doing.

The optical fiber connectors 16j and 16k in the fifth embodiment and the optical fiber connectors 16n and 16o in the sixth embodiment further extend the optical fiber on a straight line connecting the S pole and the N pole of the magnetic body 2. It is possible to form a convex portion 5a and a concave portion 6a between adjacent optical fiber end faces,
Alternatively, by adding the concave portions 6a and 6b and the light shielding block 7, it is possible to prevent the sneak of light and to realize an optical fiber connector with high optical fiber connection accuracy.

Next, a seventh embodiment of the optical fiber connector according to the present invention will be described with reference to FIG.

In this embodiment, a cap 8 and a lid 9 as sealing means are added to the optical fiber connectors 16n and 16o connected in the sixth embodiment.

The cap 8 is connected to the optical fiber connector 16.
An inner wall equal to the outer shape of the magnetic body 2n and the magnetic body 2o when n and 16o are connected, and a hole through which the optical fibers 1f and 1h are inserted. This cap 8 is connected to the optical fiber connector 16.
n, 16o, the connection surfaces 15n, 15o
It is possible to prevent foreign matter such as dust from entering through the gap o. Further, the lid 9 having a hole through which the optical fibers 1g and 1i pass can be more reliably prevented from entering the foreign matter such as dust on the outer circumference similar to the inner diameter of the cap 8.

Further, the cap 8 is provided with a mounting hole 10 for attaching the hook 11 as a locking means, and the projection 9 is added to the lid 9 so that the optical fiber connectors 16n, 1n are provided.
By hooking the hook 11 on the projection 12 after the connection of 6o, it is possible to prevent the optical fiber connectors 16n and 16o from being accidentally dropped.

Next, an eighth embodiment of the optical fiber connector according to the present invention will be described with reference to FIG.

In this embodiment, the magnetic material 2p is
On a straight line parallel to the straight line connecting the north and south poles of
Cylindrical holes 14m, 14o, 14q, and 14s are arranged at positions symmetrical with respect to the center point of the connection surface 15p, and the cylindrical holes 14m,
The central axes of 4o, 14q, and 14s are provided to be vertical.

Optical fibers 1j, 1 having mirror-like end surfaces
1, 1n and 1p are cylindrical holes 14m and 14o, respectively.
14q and 14s are fixed so that their central axes coincide with each other.
One optical fiber connector 16p composed of the magnetic material 2p and the optical fibers 1j, 11l, 1n and 1p is the other optical fiber connector similarly composed of the magnetic material 2q and the optical fibers 1k, 1m, 1o and 1q. The optical axes of the optical fiber 1j and the optical fiber 1k, the optical fiber 11 and the optical fiber 1m, the optical fiber 1n and the optical fiber 1o, the optical fiber 1p and the optical fiber 1q coincide with each other. It is possible to obtain a detachable optical fiber connector in which the connection direction is always constant and the loss is small.

Here, the optical fiber connector 16p is
If an erroneous connection such as connecting to the optical fiber connector 16q by rotating it by 0 degrees is attempted, the magnetic body 2p and the magnetic body 2q have the same magnetic pole and cannot be connected due to repulsive action.

Further, it is possible to further add an optical fiber on a straight line parallel to the straight line connecting the N pole and the S pole of the magnetic bodies 2p and 2q, and on a straight line perpendicular to the straight line connecting the N pole and the S pole. is there.

As described above, the optical fiber connectors 16p,
16q is easy to handle, is configured with a small number of components, and can realize a small-sized connector that can connect a plurality of optical fibers at once without erroneous connection.

Next, a ninth embodiment of the optical fiber connector according to the present invention will be described with reference to FIG.

In this embodiment, similarly to the optical fiber connector of the eighth embodiment, the optical fiber connector 16
r and 16s are optical fibers 1j, 1k, 1l, 1m, 1
n, 1o, 1p, 1q, and magnetic bodies 2r and 2s, and the magnetic bodies 2r are provided with protrusions 5b and 5c, respectively, and the magnetic bodies 2s are provided with concave parts 6c and 6d, respectively.

The projections 5b and 5c are added to the middle of the end faces of the optical fibers 1j, 11l, 1n and 1p on the connection surface 15r, and are generated when the optical fiber connectors 16r and 16s are connected. Light is prevented from wrapping around due to light leaking from the end face of an adjacent optical fiber.

On the other hand, the recesses 6c and 6d are added to the middle of the respective end faces of the optical fibers 1k, 1m, 1o and 1q on the connection surface 15s, and are convex when the optical fiber connector 16r and the optical fiber connector 16s are connected. It is mated with the parts 5b and 5c.

At this time, the connection position of the optical fiber is determined by the magnetic body 2j and the magnetic body 2k.
The fitting accuracy of each of the b, 5c and the concave portions 6c, 6d is not required, and the convex portions 5b, 5c and the concave portions 6c, 6d can be easily formed.

By increasing the fitting accuracy of the projections 5b, 5c and the recesses 6c, 6d, the optical fibers 1j and 1k, the optical fiber 11 and the optical fiber 1m, the optical fiber 1n and the optical fiber 1o, It is also possible to connect the optical axes of the fiber 1p and the optical fiber 1q with higher accuracy.

Further, similarly to the optical fiber connector according to the sixth embodiment shown in FIG. 9, when connecting an optical fiber connector constituted by using a magnetic material of the same shape having concave portions 6c and 6d added thereto, For example, a light-shielding block 7 made of a light-shielding material such as a black synthetic resin molded product is fixed to one magnetic body, and is sandwiched when an optical fiber connector is connected. An optical fiber connector that prevents an optical signal from sneaking into an adjacent optical fiber with only the body can be configured.

The above optical fiber connectors 16r, 16s
Can further add an optical fiber on a straight line parallel to the straight line connecting the S pole and the N pole of the magnetic material and on a straight line perpendicular to the straight line connecting the S pole and the N pole. By adding a convex portion and a concave portion or a concave portion and a light-blocking block between the fiber end faces, it is possible to prevent light from flowing around and to realize an optical fiber connector with high optical fiber connection accuracy.

[0084]

As described above, according to the first aspect of the present invention, the connectors can be attached and detached, the optical fibers can be connected only by bringing the connectors closer together, and the operability is improved. Since two optical fiber connectors are connected only in a certain direction, rotation of the optical fiber connector does not damage the end face of the optical fiber.Since it has a simple structure and is composed of a few parts, the productivity is high. It is possible to provide an optical fiber connector that can easily clean the fiber end face and has good maintainability.

According to the second aspect of the present invention, there is provided an optical fiber connector capable of reducing a coupling loss at the time of connecting an optical fiber connector by preventing a shift between an optical fiber mounting position and an optical axis. be able to.

According to the third aspect of the present invention, a plurality of optical fibers can be inserted into and fixed to a magnetic body having both magnetic poles on the connection surface, and a plurality of optical fibers can be simultaneously formed by a small optical fiber connector. An optical fiber connector that can be connected without erroneous connection can be provided.

According to the fourth or fifth aspect of the present invention, it is possible to prevent light from wrapping around at a connection point between adjacent optical fibers, and to provide a more reliable optical fiber connector.

According to the sixth aspect of the present invention, it is possible to prevent foreign matter from entering the connection surface of the optical fiber connector, and to provide a more reliable optical fiber connector.

According to the seventh aspect of the invention, it is possible to prevent the optical fiber connector from being accidentally disconnected.
An optical fiber connector with higher reliability can be provided.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a first embodiment of an optical fiber connector according to the present invention.

FIG. 2 is a perspective view showing the optical fiber connector of FIG.

FIG. 3 is a schematic cross-sectional view for explaining the operation of the optical fiber connector of FIG.

FIG. 4 is a perspective view showing a second embodiment of the optical fiber connector according to the present invention.

FIG. 5 is a sectional view showing a third embodiment of the optical fiber connector according to the present invention.

FIG. 6 is a perspective view showing a fourth embodiment of the optical fiber connector according to the present invention.

FIG. 7 is a perspective view showing a fifth embodiment of the optical fiber connector according to the present invention.

FIG. 8 is a plan view of the optical fiber connector of FIG. 7;

FIG. 9 is a plan view showing a sixth embodiment of the optical fiber connector according to the present invention.

FIG. 10 is a sectional view showing a seventh embodiment of the optical fiber connector according to the present invention.

FIG. 11 is a perspective view showing an eighth embodiment of the optical fiber connector according to the present invention.

FIG. 12 is a perspective view showing a ninth embodiment of the optical fiber connector according to the present invention.

FIG. 13 is a sectional view showing an example of a conventional optical fiber connector.

FIG. 14 is a schematic cross-sectional view for explaining the operation of the optical fiber connector of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Optical fiber 2 Magnetic body 3 Adhesive 4 Sleeve 5 Convex part 6 Concave part 7 Shielding block 8 Cap 9 Lid 10 Mounting hole 11 Hook 12 Projection 13 Cylindrical magnetic body 14 Hole part 15 Connection surface 16 Optical fiber connector

Claims (7)

[Claims] 1. A magnetic body having a hole through which an optical fiber is inserted, the magnetic body having an N pole and an S pole on a connection surface with a mating optical fiber connector, and a magnetic body having a hole connected to a straight line connecting both magnetic poles. An optical fiber connector, wherein the optical fiber is fixed to the magnetic body so that the optical axis is vertical. 2. The optical fiber connector according to claim 1, wherein an end face of the optical fiber is disposed at a center of a connection surface of the optical fiber connector. 3. The optical fiber connector according to claim 1, wherein the magnetic body has a hole through which a plurality of optical fibers are inserted and fixed. 4. A projection is formed on the connection surface of one optical fiber connector so as to partition the adjacent hole, and the adjacent hole is partitioned on the connection surface of the other optical fiber connector. 4. An optical fiber connector according to claim 3, wherein a concave portion is formed to engage with said convex portion. 5. A concave portion is formed on a connection surface of each optical fiber connector to be connected to each other so as to partition the adjacent hole portion, and a light-blocking block is interposed in the concave portion. An optical fiber connector as described. 6. The optical fiber connector according to claim 1, further comprising sealing means for covering an outer peripheral surface of said two optical fiber connectors connected to each other. 7. The optical fiber connector according to claim 6, wherein said sealing means further comprises locking means for preventing said two optical fiber connectors connected to each other from being detached.