JPH0784154A - Optical connector with line number identifying function - Google Patents

Abstract

PURPOSE:To provide the optical connector with a line number identifying function capable of preventing the degradation in connection loss arising from axis misalignment and angle deviation and easily averting complicating, messing, delaying, etc., of operations. CONSTITUTION:This optical connector has a first ferrule 15 which insulates the space of guide pin holes 16 inserted onto guide pins 6 from each other, a second ferrule 18 which is coupled to the first ferrule 15 in an opposed state, and insulates the space of guide pin holes 21 inserted onto the guide pins 6, a leaf spring 23 which engages with the engaging grooves 6a of the guide pins 6 projecting form the second ferrule 18 and maintains the coupling state of the first ferrule 15 and the second ferrule 18 and a chip resistor which is built in the second ferrule 18 and electrically conducts plural output terminals respectively to the leaf spring 23. Electricity is supplied to the guide pins 6 and the resistance value intrinsic to the chip resistor is outputted. The connecting state of the first optical fiber 1 and the second optical fiber 4 is identified from the resistance value.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in an optical connector with a wire number identifying function, which enables real-time knowledge of the connection status of optical fibers facing each other.

[0002]

2. Description of the Related Art Before showing a conventional optical connector with a wire number identifying function, a conventional guide pin coupling type optical connector will be first outlined.

As shown in FIGS. 11 and 12, a conventional guide pin coupling type optical connector has a first connector plug (first ferrule) via a rubber boot 2 at an end of a first optical fiber 1 made of a tape core wire. ) 3 and the rubber boot 2A at the end of the second optical fiber 4 composed of the tape core wire.
Through the second connector plug (second ferrule) 5,
Each is fitted. As shown in FIG. 11, the first connector plug 3 and the second connector plug 5 are each formed of the same member having no distinction between male and female. However, when connecting the above-mentioned first optical fiber 1 and second optical fiber 4, first, the first connector plug 3 and the second optical fiber 4 are connected.
The first optical fiber 1 and the second optical fiber 4 are positionally connected to each other by coupling the connector plug 5 with the pair of guide pins 6 having a positioning function so as to face each other, and then to the coupled first connector plug 3. A dedicated connecting clip 7 may be detachably fitted to the second connector plug 5, and the connecting state may be stabilized and maintained based on the pressing action of the connecting clip 7.

In addition to the above-mentioned guide pin coupling type, the optical connector is also disclosed in JP-A-61-2226715 and 64.
There is also a plug-in type (also referred to as push-on type) as disclosed in Japanese Laid-Open Patent Publication No. 61713.

Although not shown, this plug-in type optical connector does not require a dedicated coupling clip 7, but an adapter is interposed between both connector plugs, and a claw and a plug recess built in this adapter are formed. The parts are engaged with each other to maintain the pressure between both connector plugs.

Next, based on the above description, a conventional optical connector with a wire number identification function will be described in detail.

As shown in FIG. 13, a conventional optical connector with a wire number identifying function is provided with a semiconductor memory or a resistor on the upper surface of the first connector plug 3 and the upper surface of the second connector plug 5 to identify the wire number. Each circuit 8 is installed,
The plurality of protruding electrodes 9 of the wire number identification circuit 8 are inserted into the plurality of electrode insertion holes 11 of the upright reading circuit board 10, respectively, and the first optical fiber 1 and the second optical fiber 1 are separated from the memory contents or the resistance values. The connection status with the optical fiber 4 is identified by the wire number.

[0008]

The conventional optical connector with the wire number identification function is constructed as described above, and after the first connector plug 3 and the second connector plug 5 are connected, a plurality of wire number identification circuits 8 are provided. Since the electrodes 9 are inserted into the plurality of electrode insertion holes 11 of the reading circuit board 10, there is a problem that the connection loss is deteriorated for the reason described below.

That is, in the conventional optical connector with the wire number identification function, as shown in FIG. 14, after the first connector plug 3 and the second connector plug 5 are connected, the wire number identification circuit 8 is provided.
The plurality of electrodes 9 have been inserted into the plurality of electrode insertion holes 11 of the reading circuit board 10, respectively. At this time, between the first connector plug 3 and the second connector plug 5, other than the original coupling force. Then, the disturbance acts on the plurality of electrodes 9. It is ideal that the positioning of the first connector plug 3 and the second connector plug 5 is stably held by the pressing action of the dedicated coupling clip 7 based on the function of the pair of guide pins 6, but a plurality of wire number identification circuits 8 are provided. When the respective electrodes 9 are inserted into the plurality of electrode insertion holes 11 of the reading circuit board 10, the arrangement accuracy of the electrodes 9 and the arrangement accuracy of the plurality of electrode insertion holes 11 are based on the function of the pair of guide pins 6. 3 and the positioning accuracy of the second connector plug 5 are significantly inferior, the distortion as shown in FIG. When this distortion occurs, the first
There is a problem that an axis deviation, an angle deviation, or the like is induced between the connector plug 3 and the second connector plug 5, and as a result, the connection loss is deteriorated.

Further, considering this problem from the viewpoint of workability of connection of the optical connector with wire number identification function, after connecting the first connector plug 3 and the second connector plug 5, a plurality of electrodes of the wire number identification circuit 8 are connected. Since 9 has to be inserted into each of the plurality of electrode insertion holes 11 of the reading circuit board 10,
There is a problem that the work is complicated, complicated, and delayed.

The present invention has been made in view of the above, and prevents deterioration of connection loss due to axis deviation and angle deviation, and
It is an object of the present invention to provide an optical connector with a wire number identification function that can easily avoid complications, complications, delays, and the like of work.

[0012]

In the first aspect of the present invention, in order to achieve the above-mentioned object, a plurality of guide means provided with fixing means and having conductivity, and a plurality of guide means respectively. A first insulating member is provided between the guide means holes that penetrate through
A ferrule, a first optical fiber held by the first ferrule, and a guide means hole which is detachably coupled in a state of facing the first ferrule and is penetrated by a plurality of guide means are insulated from each other. Two ferrules, a second optical fiber held by the second ferrule and positioned and connected to the first optical fiber, and engaging with the respective projecting portions of a plurality of guide means having conductivity and projecting from the second ferrule. And a plurality of displaceable coupling maintaining means for maintaining the coupled state of the first ferrule and the second ferrule, and a plurality of output terminals provided on the second ferrule are electrically connected to each of the plurality of coupling maintaining means. A wire number identifying means, which supplies power to the plurality of guiding means to cause the wire number identifying means to output an identification value. Based on the identification value, the connection status of the first optical fiber and the second optical fiber is determined. So that to another.

In the second aspect of the present invention, in order to achieve the above-mentioned object, a plurality of guide means having conductivity and arranged in the fixing means, and the plurality of guide means are penetrated. A first ferrule with insulation between the guide means holes, a first optical fiber held by the first ferrule, and a plurality of guide means provided in the first ferrule and penetrating the first ferrule are electrically connected to each other. A plurality of electric conductors to be engaged, a first wire number identification means provided on the first ferrule, and a plurality of output terminals electrically connected to the plurality of electric conductors, respectively, and a state facing the first ferrule. A second ferrule in which the guide means holes which are detachably coupled with each other and which are penetrated by the plurality of guide means are insulated from each other;
The second optical fiber held by the ferrule and positioned and connected to the first optical fiber, and the first ferrule and the second ferrule that engage with the protruding portions of the plurality of guide means that are conductive and protrude from the second ferrule. A plurality of displaceable coupling maintaining means for maintaining the coupling state with the ferrule, and a second wire number identifying means provided on the second ferrule and having a plurality of output terminals electrically connected to each of the coupling maintaining means. And supplying electric power to the plurality of guiding means to output identification values to the first wire number identifying means and the second wire number identifying means, respectively, and based on the respective identification values, the first optical fiber and the first optical fiber. The connection status of the two optical fibers is identified.

In order to achieve the above-mentioned object in the present invention, the above-mentioned plurality of guide means are composed of a pair of guide pins implanted in the fixing means, and the free end circumferences of the pair of guide pins are formed. An engagement groove that engages with the coupling maintaining means is cut out on the surface.

In order to achieve the above-mentioned object in the present invention, the plurality of coupling maintaining means are composed of a pair of substantially L-shaped plate springs arranged on both sides of the second ferrule. Engaging holes are formed in the short sides of the pair of plate ridges so as to engage with the engaging grooves on the free end peripheral surface of the guide pin projecting through the second ferrule in a penetrating state. There is.

Further, in order to achieve the above object in the present invention, in the optical connector with a wire number identifying function according to claim 2, at least one of the first wire number identifying means and the second wire number identifying means. On the other hand, a diode is built in.

[0017]

According to the first aspect of the present invention having the above-described structure, since the plurality of guiding means can be grasped as the extension of the electrodes, the plurality of electrodes of the wire number identifying circuit can be connected to the plurality of electrodes of the reading circuit board. It is not necessary to insert each into the insertion hole,
No distortion will occur. Further, since it is not necessary to insert the plurality of electrodes of the wire number identification circuit into the plurality of electrode insertion holes of the reading circuit board after the first ferrule and the second ferrule are coupled, respectively, the work can be simplified, simplified and speeded up. Can be expected. Further, by reading the identification value of the wire number identifying means, it is possible to easily identify which first ferrule is connected to which second ferrule.
Even if a large-scale optical switch having a plurality of connector switching connections is configured, it is possible to identify the connection status of the first optical fiber and the second optical fiber.

Further, according to the second aspect of the present invention having the above-mentioned structure, when reading the identification value, the second ferrule of the second ferrule is passed through a plurality of guiding means and a plurality of coupling maintaining means.
There is a case where the identification value of the wire number identification means of 1 is read, and a case where the identification value of the first wire number identification means of the first ferrule is read as a parallel circuit via a plurality of guide means and a plurality of conductors. It will be. Then, the respective identification values can be read from these two pieces of information, and the wire number of each ferrule can be easily identified.

Further, according to the present invention having the above structure, since the engagement holes of the pair of plate ridges are engaged with the engagement grooves of the guide pin, the combined state of the first ferrule and the second ferrule can be maintained. Is possible. Further, the force acting on the pair of plate strips is a shearing force in the thickness direction thereof, and therefore does not coincide with the deformation direction of the strip elasticity. Therefore, the work of selecting the wall thickness of the plate strip in consideration of the strength of the plate strip becomes unnecessary, and the thin plate strip can be selected regardless of the pressing force between the first ferrule and the second ferrule.

Further, according to the present invention having the above-mentioned structure, the pressing force between the first ferrule and the second ferrule acts on the guide pin placed between the fixing member and the plate spring. Since it is a tensile force in the axial direction of the guide pin, there is no problem in terms of rigidity.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The first invention of the present invention will be described below in detail with reference to an embodiment shown in FIGS. The optical connector with a wire number identification function according to the first aspect of the present invention is as shown in FIG.
A first connector plug 3 and a second connector plug 5 are provided, and one first connector plug 3 is composed of a pair of guide pins 6, a first ferrule 15 and a first optical fiber 1, and the other second connector. The plug 5 is composed of the second ferrule 18, the second optical fiber 4, the pair of plate ribs 23, the chip resistor 25, etc., and is supplied to the pair of guide pins 6 to cause the chip resistor 25 to output a resistance value. The connection state of the first optical fiber 1 and the second optical fiber 4 is identified based on this resistance value.

As shown in FIGS. 1 and 2, the pair of guide pins (a plurality of guide means) 6 constituting the first connector plug 3 are made of conductive super steel and have a sharp free end.
It has a 0.7 mm outer diameter and is formed in a substantially pencil shape, and is press-fitted into the planting holes 12 a of the fixing member (fixing means) 12 and is planted therein. Engagement grooves 6a are cut around the free surface of the guide pin 6 with a diameter reduction of φ0.4 mm, and the engagement grooves 6a are formed in the engagement holes 24 of the plate spring 23 as will be described later.
Has a function of engaging with. As shown in FIG. 4, lead wires 13 (see FIGS. 4 and 5) are connected to the implanted portions 6 b of the pair of guide pins 6, respectively, and the pair of guide pins 6 are connected via the pair of lead wires 13. A measurement voltage E (see FIG. 4) for reading the electric resistance value between the two is supplied and applied. Furthermore, a pair of guide pins 6
The coil springs 14 are respectively inserted into the first and second ferrules 15, and the pair of coil springs 14 are compressed between the fixing member 12 and the first ferrule 15 as the second connector plug 5 is inserted, as will be described later. Between the 1st connector plug 3 and the 2nd connector plug 5, 800g-1000
It has a function of applying a pressing force of about g. Also,
The fixing member 12 is made of an epoxy resin having an insulating property, and an optical fiber hole 12b for inserting an optical fiber is formed through the central portion of the fixing member 12. When applied to an optical switch, the matrix shown in FIG. It is fitted on the board 100. This matrix board 100, as shown in FIG.
It is provided with a plurality of mounting holes arranged at a constant arrangement pitch, and is installed in an upright state. The fixing member 12 is fitted into the plurality of mounting holes in a closed state from one surface side.

The first ferrule 15 described above is made of epoxy resin and has a size of 4 mm × 2.5, as shown in FIGS.
It is molded and configured to have a size of 8 mm × 8 mm, and is fitted into the mounting hole of the matrix board 100 when applied to an optical switch, and is fitted into the pair of guide pins 6 while holding the first optical fiber 1 to form a pair of Coil spring 14
It comes into contact with. Guide pin holes (guide means holes) 16 penetrating each of the pair of guide pins 6 are bored in a side-by-side manner in the longitudinal direction on both inner sides of the first ferrule 15. This pair of guide pin holes 1
The first ferrule 15 is electrically insulated from each other because the first ferrule 15 is molded from epoxy resin. Further, the first optical fiber 1 is held in the optical fiber holding hole 17 of the first ferrule 15 in a state in which the end face connected to the second optical fiber 4 is polished and is positioned alone in the middle of the pair of guide pin holes 16. ing.

On the other hand, the second ferrule 18 constituting the second connector plug 5 is formed by molding epoxy resin into a size of 4 mm × 2.5 mm × 8 mm, as shown in FIGS. When applied to, the robot 20 is gripped by the hand 20 of the robot 19 and fitted into the mounting hole of the matrix board 100, and also fitted into the pair of guide pins 6 while holding the second optical fiber 4 and coupled with the first ferrule 15. It has a function. Second ferrule 18
In the longitudinal direction on both sides of the inside, guide pin holes (guide means holes) 21 penetrating each of the pair of guide pins 6 are formed so as to penetrate in parallel. The pair of guide pin holes 21 are electrically insulated from each other because the second ferrule 18 is molded and made of epoxy resin. Further, the second optical fiber 4 is the first optical fiber 1
The end face connected to the first ferrule 1 is polished and is held in the optical fiber holding hole 22 of the second ferrule 18 in a state of being positioned independently between the pair of guide pin holes 16.
5 and the second ferrule 18 are coupled to each other, the first optical fiber 1
It has a function of positioning and connecting with and transmitting light.
As shown in FIG. 5, the robot 19 includes a hand 20 having a pair of gripping claws 20a that can be opened and closed, and is installed on the other surface side of the matrix board 100 via a wiring area.

Further, as shown in FIGS. 1 to 3, the pair of plate ribs (coupling maintaining means) 23 are elastically deformed from conductive stainless steel having a thickness of 0.2 mm by a force of about 200 g. It has a substantially L-shape. The long side portions of the pair of plate ribs 23 are adhesively fixed to both sides of the second ferrule 18, and the short side portions are engaged with the engagement grooves 6a of the guide pin 6 in a state of being engaged therewith. Engagement holes 24 each having a hole shape or an oval shape are formed. The pair of plate ribs 23 are grasped by the hand 20 of the robot 19 in a deformed state.

Further, as shown in FIG. 3, the chip resistor (wire number identifying means) 25 has a size of about 2 mm square and is built in the second ferrule 18, and chips on both sides thereof. The resistance terminals are soldered to the pair of plate springs 23 to be electrically connected. However, the chip resistor 25 has a unique resistance value (identification value) based on the power supply from the pair of guide pins 6 through the pair of plate springs 23 when the first connector plug 3 and the second connector plug 5 are coupled. Is output. Then, this resistance value is read by measuring V1 in FIG. 4 by a reading circuit (not shown), and which second connector plug 5 is connected to which first connector plug 3 by reading this resistance value. However, in other words, the wire number of the optical fiber can be easily identified.

In FIG. 4, V1 is a read voltage,
E is an applied voltage, R is a resistance value to be measured, and R ₀ is a reference resistance.

Therefore, in order to connect the first connector plug 3 and the second connector plug 5 and identify the wire number of the optical fiber, first, the hand 20 of the robot 19 uses the pair of plate strips of the second connector plug 5. 23 is gripped and the second connector plug 5 is conveyed to a predetermined mounting hole of the matrix board 100 (see FIG. 5). At this time, the pair of plate ridges 23 are grasped by the hand 20 of the robot 19, and thus deformed in the directions of the arrows shown in FIG.

Next, the hand 20 of the robot 19 fits the guide pin holes 21 of the second connector plug 5 into the pair of guide pins 6, and then the second connector plug 5 is moved to be coupled to the first connector plug 3. (See Figure 1).
Then, the second connector plug 5 is pressure-contacted to the first connector plug 3 while being guided by the pair of guide pins 6 in a penetrating state, and the first optical fiber 1 and the second optical fiber 4 are positioned and connected in accordance with this pressure-contact. A pair of coil springs 14
Is compressed between the fixing member 12 and the first ferrule 15, and a pressing force of about 800 g to 1000 g is applied between the coupled first connector plug 3 and second connector plug 5. At this time, the engagement holes 24 of the pair of plate springs 23
Is penetrated by the guide pin 6, but since the pair of plate springs 23 is still in a deformed state, the engagement hole 24 and the engagement groove 6a are not locked.

When the hand 20 of the robot 19 releases the grip of the pair of plate ridges 23, the pair of plate ridges 23 returns to their original state, and their engaging holes 24 are formed in the engaging grooves 6a of the guide pins 6. The first connector plug 3 and the second connector plug 5 are locked and the coupled state is maintained, and the pair of guide pins 6, the pair of plate springs 23 and the chip resistor 25 are held.
Are electrically conducted, and the resistance value of the chip resistor 25 can be read (see FIG. 2).

Then, after that, the resistance value peculiar to the chip resistor 25 is read by the reading circuit at V1 in FIG. 4, and by reading this resistance value, which first connector plug 3 is connected to which second connector plug 5. In other words, the connection status of the first optical fiber 1 and the second optical fiber 4 can be easily identified (see FIG. 4).

According to the above structure, since the pair of guide pins 6 can be grasped as extensions of the electrodes, the plurality of electrodes 9 of the wire number identification circuit 8 are respectively inserted into the plurality of electrode insertion holes 11 of the reading circuit board 10. There is no need to insert it, and the distortion as shown in FIG. 14 does not occur. Therefore, it is possible to solve the problem that, along with the occurrence of distortion, an axis deviation, an angle deviation, or the like is induced between the first connector plug 3 and the second connector plug 5, and as a result, the connection loss is deteriorated. Is possible.

Further, after the first connector plug 3 and the second connector plug 5 are connected, a plurality of electrodes 9 of the wire number identification circuit 8 are connected.
Need not be inserted into the plurality of electrode insertion holes 11 of the reading circuit board 10, respectively, so that simplification, simplification, and speedup of the work can be expected.

Further, by reading the resistance value peculiar to the chip resistor 25, which first connector is used for which second connector plug 5 is determined.
Since it is possible to very easily identify whether or not the connector plugs 3 are connected, even if a large-scale optical switch having a plurality of connector switching connections is configured, the connection status of the first optical fiber 1 and the second optical fiber 4 can be confirmed. Can be identified instantly. Furthermore, it is an extremely effective means for operating the optical fiber line by the optical switch.

When the hand 20 of the robot 19 releases the grip of the pair of plate ridges 23, the pair of plate ridges 23 returns to their original state and the engagement holes 24 thereof are formed in the engagement grooves 6a of the guide pin 6. Since they are locked, it is possible to easily maintain the coupled state of the first connector plug 3 and the second connector plug 5.

Then, the pair of plate ribs 23, which are engaged with the engaging grooves 6a of the guide pins 6, are sandwiched between the first ferrule 15 and the tip end portion of the guide pin 6, and at this time, the pair of plates are formed. The force acting on the rib 23 is a shearing force in the thickness direction thereof and does not coincide with the deformation direction of the rib elasticity. Therefore, considering the strength of the plate strip 23, the plate strip 2
The work of selecting the wall thickness of No. 3 becomes unnecessary, and the thin plate bar 23 can be selected regardless of the pressing force between the first connector plug 3 and the second connector plug 5, and the force necessary for bar deformation can be suppressed. You can And through this, the robot 19
It can be expected that the gripping of the hand 20 can be facilitated, and the workability of the connection can be improved.

Further, a pressing force between the first connector plug 3 and the second connector plug 5 acts on the guide pin 6 which can be placed between the fixing member 12 and the plate strip 23. This pressing force is applied to the guide pin 6. Since the tensile force is 6 in the axial direction, there is no problem in terms of rigidity. Therefore, even if a thin guide pin 6 is used, a large pressing force can be easily maintained,
This can greatly contribute to downsizing of the entire connector plug.

Next, the second invention of the present invention will be described in detail based on the embodiment shown in FIGS. As shown in FIG. 6, an optical connector with a wire number identifying function according to the second aspect of the present invention is provided with a spacer 26, a pair of electrode plate springs 27 and a chip resistor 25 on the first connector plug 3. , Second
The connector plug 5 has a built-in wire number identification circuit 28 instead of the chip resistor 25, and supplies power to the pair of guide pins 6 to output resistance values to the chip resistor 25 and the wire number identification circuit 28, respectively. Then, the connection status of the first optical fiber 1 and the second optical fiber 4 is identified based on each resistance value.

As shown in FIG. 6 and FIG. 7, the spacer 26 has a substantially hat-shaped cross section with a flange 26a on its peripheral surface and overlaps with the non-coupling surface of the first ferrule 15 which is coupled with the second ferrule 18. It is attached and is in contact with the pair of coil springs 14. An optical fiber insertion hole 26b is formed in the central portion of the spacer 26 so as to penetrate therethrough, and the first optical fiber 1 penetrates the optical fiber insertion hole 26b. Further, the flange 26a of the spacer 26 is provided with guide pin holes 26c that penetrate the pair of guide pins 6.

The pair of electrode plate strips (conductors) 27 described above are constructed so as to be elastically deformed from a conductive stainless steel having a thickness of 0.2 mm by a force of about 200 g, and both sides of the first ferrule 15 can be deformed. Each part is adhesively fixed. The curved free ends are slidably slidably contacted with the peripheral surfaces of the pair of guide pins 6, respectively, and are always electrically connected to the pair of guide pins 6 regardless of the sliding of the first ferrule 15. .

Although not shown, the chip resistor (first wire number identifying means) 25 has a size of about 2 mm square as in FIG. 3 and is built in the first ferrule 15. , The chip resistance terminals on both sides thereof are respectively soldered to the pair of electrode plate springs 27 so as to be electrically connected.

Further, the wire number identifying circuit (second wire number identifying means) 28 is constructed to have a resistance of about 2 mm square from the chip and the diode for changing the polarity, as shown in FIGS. 6 and 7. , The second ferrule 18 is built in, and the circuit terminals on both sides of the second ferrule 18 are soldered to the pair of plate springs 23 to be electrically connected.

The other parts are the same as in the first aspect of the invention, but the lead wire 1 is attached to the planted portion 6b of the pair of guide pins 6.
3 are connected to each other, and a measuring voltage E for measuring the electric resistance value between the pair of guide pins 6 is supplied and applied via the pair of lead wires 13 (see FIG. 8). . By changing the polarity of the voltage E applied to the measurement terminals A and B shown in FIG. 8 and measuring V1 in each of two cases, the first voltage is measured via the pair of guide pins 6 and the pair of plate springs 23. When the resistance value of the wire number identification circuit 28 of the 2 connector plug 5 is read, and when the first connector plug 3 is passed through the pair of guide pins 6 and the pair of electrode plate springs 27.
There is a case where the resistance value of the chip resistor 25 is read as a parallel circuit. Each resistance value can be read from these two pieces of information, and each connector plug wire number can be easily identified. However, the information of the first connector plug 3 and the information of the second connector plug 5 are respectively read through the pair of guide pins 6, but since the wire number identification circuit 28 has a diode for changing the polarity, these are It is possible to prevent the two pieces of information from being read at the same time and being confused.

Next, based on the above description, the reading principle will be described with reference to FIG. When A (+ pole) and B (-pole), the total resistance on the measured side is Rt = R ₂ (2). When A (− pole) and B (+ pole), the total resistance on the measured side is 1 / Rt = 1 / R ₁ + 1 / R ₂ ... Therefore, by measuring V ₁ resistance in the case of R
₁ and R ₂ can be calculated.

According to the above construction, since the pair of guide pins 6 can be grasped as the extension of the electrode through the pair of plate ribs 23 and the pair of electrode plate ribs 27, the wire number identifying circuit 8 can be arranged as in the conventional case. A plurality of electrodes 9 of the reading circuit board 10
14 does not need to be inserted into each of the plurality of electrode insertion holes 11 and the distortion as shown in FIG. 14 does not occur. Therefore, the first connector plug 3 and the second connector plug 3
Inducing axis deviation and angle deviation between the connector plugs 5,
As a result, it becomes possible to solve the problem that the connection loss is deteriorated.

After connecting the first connector plug 3 and the second connector plug 5, the plurality of electrodes 9 of the wire number identification circuit 8 are connected.
Need not be inserted into the plurality of electrode insertion holes 11 of the reading circuit board 10, respectively, so that simplification, simplification, and speedup of the work can be expected.

By reading the specific resistance values of the chip resistor 25 and the wire number identification circuit 28, it is possible to very easily identify which first connector plug 3 is connected to which second connector plug 5. Therefore, even if a large-scale optical switch having a plurality of connector switching connections is configured, the connection status of the first optical fiber 1 and the second optical fiber 4 can be instantly identified. Further, it becomes possible to provide an extremely effective means for operating the optical fiber line by the optical switch.

Incidentally, such an effect can be achieved once if the wire number identification function is added to either the first connector plug 3 or the second connector plug 5. . However, if the first connector plug 3 in the optical switch of FIG. 5 is also provided with the wire number identification function, no matter which position of the matrix board 100 the first connector plug 3 is attached to, the connection wire number can be identified. Irrelevant. However, for example, when the wire number identification function is provided only to the second connector plug 5, the wire number of the first connector plug 3 is forced to depend on the address of the matrix board 100, and the wire number of the first connector plug 3 relative to the matrix board 100 must be determined. If the connecting position of the 1 connector plug 3 is wrong, the wire number can no longer be properly identified. Therefore, in order to completely eliminate such an artificial setting error and to greatly improve the reliability of the wire number identification, the wire number identification of the optical connector plug according to the present invention is extremely effective.

Further, when the hand 20 of the robot 19 releases the grip of the pair of plate springs 23, the pair of plate springs 2
3 returns to the original state, and the engagement hole 24 of the guide pin 6
Since the first connector plug 3 and the second connector plug 5 are engaged with the engaging groove 6a, it is possible to easily maintain the combined state of the first connector plug 3 and the second connector plug 5.

Further, the pair of plate ribs 23, which are engaged with the engaging groove 6a of the guide pin 6, are sandwiched between the first ferrule 15 and the tip end portion of the guide pin 6, and at this time, the pair of plates are formed. The force acting on the rib 23 is a shearing force in the thickness direction thereof and does not coincide with the deformation direction of the rib elasticity. Therefore, considering the strength of the plate strip 23, the plate strip 2
The work of selecting the wall thickness of No. 3 becomes unnecessary, and the thin plate bar 23 can be selected regardless of the pressing force between the first connector plug 3 and the second connector plug 5, and the force necessary for bar deformation can be suppressed. You can And through this, the robot 19
It can be expected that the gripping of the hand 20 can be facilitated, and the workability of the connection can be improved. Furthermore, the pressing force between the first connector plug 3 and the second connector plug 5 acts on the guide pin 6 which can be placed between the fixing member 12 and the plate spring 23. Since the tensile force is in the axial direction, there is no problem in terms of rigidity. Therefore, even if the thin guide pin 6 is used, a large pressing force can be easily ensured, which can greatly contribute to downsizing of the entire connector plug.

In the above embodiment, the wire number identification circuit 28 having the diode for changing the polarity is provided inside the second ferrule 18, but it may be provided inside the first ferrule 15. Further, even if they are built into the first ferrule 15 and the second ferrule 18, respectively, the same operational effects as those of the above-described embodiments can be obtained. Further, in the above embodiment, FIG.
Although the circuit pattern shown in FIG. 9 is used, the circuit pattern shown in FIG. 9 and FIG. 10 may be used without being limited thereto. Further, in the above-mentioned embodiments, the first optical fiber 1 and the second optical fiber 4 are used one by one, but the present invention is not limited to this, and the first optical fiber 1 and the second optical fiber 4 are used. Even if a plurality of 4 are used, the same effects as those of the above-described embodiments can be expected.

[0052]

As described above, according to the first aspect of the present invention, an axial deviation, an angular deviation, etc. are induced between the first ferrule and the second ferrule due to the occurrence of strain, and as a result,
There is a remarkable effect that it is possible to solve the problem that the connection loss is deteriorated. In addition, there is a special effect that simplification, simplification and speedup of work can be expected. Furthermore, even if a large-scale optical switch having a plurality of connector switching connections is configured, the connection status of the first optical fiber and the second optical fiber can be instantly identified, and
It has an excellent effect that it can be an effective means for operating an optical fiber line by an optical switch.

Further, according to the second aspect of the present invention, in addition to the above-mentioned effects, an excellent effect that human error in setting can be eliminated and the reliability of wire number identification can be greatly improved. There is.

Further, according to the present invention, since the engagement holes of the pair of plate ridges are engaged with the engagement grooves of the guide pin, it is possible to maintain the combined state of the first ferrule and the second ferrule. There is a great effect.

Further, according to the present invention, even if a thin guide pin is used, a large pressing force can be easily maintained, which contributes to downsizing of the entire connector plug. Can be expected.

Further, according to the present invention, the work of selecting the wall thickness of the plate strip in consideration of the strength of the plate strip becomes unnecessary, and the thin plate regardless of the pressing force between the first ferrule and the second ferrule. It is possible to expect a remarkable effect that the spring can be selected and the force required for deforming the spring can be suppressed.

[Brief description of drawings]

FIG. 1 is a cross-sectional explanatory view showing an embodiment of an optical connector with a wire number identifying function according to the first invention of the present invention.

FIG. 2 is a cross-sectional explanatory view showing a coupled state of the optical connector with a wire number identifying function according to the first aspect of the present invention.

FIG. 3 is a perspective view of a main part showing an embodiment of an optical connector with a wire number identifying function according to the first invention of the present invention.

FIG. 4 is a circuit diagram showing an embodiment of an optical connector with a wire number identifying function according to the first invention of the present invention.

FIG. 5 is a perspective view showing a usage state of the optical connector with a wire number identifying function according to the first aspect of the present invention.

FIG. 6 is a cross-sectional explanatory view showing an embodiment of an optical connector with a wire number identifying function according to the second invention of the present invention.

FIG. 7 is a cross-sectional explanatory view showing a coupled state of the optical connector with a wire number identifying function according to the first aspect of the present invention.

FIG. 8 is a circuit diagram showing an embodiment of an optical connector with a wire number identification function according to the second invention of the present invention.

FIG. 9 is a circuit diagram showing another embodiment of the optical connector with a wire number identifying function according to the second invention of the present invention.

FIG. 10 is a circuit diagram showing another embodiment of the optical connector with a wire number identifying function according to the second invention of the present invention.

FIG. 11 is an exploded perspective view showing a conventional optical connector.

FIG. 12 is a perspective view showing a coupled state of a conventional optical connector.

FIG. 13 is a perspective view showing a conventional optical connector with a wire number identifying function.

FIG. 14 is an explanatory diagram showing a problem of a conventional optical connector with a wire number identification function.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... 1st optical fiber, 3 ... 1st connector plug, 4 ... 2nd optical fiber, 5 ... 2nd connector plug, 6 ... Guide pin, 6a ... Engaging groove, 12 ... Fixing member, 15 ... 1st ferrule, 16 ... Guide pin hole, 18 ... Second ferrule, 2
1 ... Guide pin hole, 23 ... Plate spring, 24 ... Engagement hole, 25
... Chip resistor, 27 ... Electrode plate strip, 28 ... Wire number identification circuit.

Claims (5)

[Claims] 1. A plurality of guide means having conductivity and arranged in a fixing means, a first ferrule having insulation between guide means holes penetrating each of the plurality of guide means, and the first ferrule. A first optical fiber held by a ferrule and the first optical fiber
A second ferrule, which is detachably coupled in a state of facing the ferrule, is insulated between the guide means holes penetrating each of the plurality of guide means, and is positioned and connected to the first optical fiber held by the second ferrule. A plurality of displaceable members that engage with the second optical fiber and the protruding portions of a plurality of guide members that are conductive and that protrude from the second ferrule to maintain the combined state of the first ferrule and the second ferrule. A coupling maintaining means and a wire number identifying means provided on the second ferrule and having a plurality of output terminals electrically connected to each of the coupling maintaining means are provided, and the plurality of guiding means are supplied with power to identify the wire number. An optical connector with a wire number identification function, characterized in that the means outputs an identification value and the connection status of the first optical fiber and the second optical fiber is identified based on the identification value. 2. A plurality of guide means having conductivity and arranged in the fixing means, a first ferrule having insulation between guide means holes penetrating each of the plurality of guide means, and the first ferrule. A first optical fiber held by a ferrule and the first optical fiber
A plurality of electric conductors provided on the ferrule and electrically engaged with a plurality of guide means penetrating the first ferrule;
A first wire number identification means provided on the first ferrule and having a plurality of output terminals electrically connected to a plurality of conductors, respectively, and a plurality of guides detachably coupled to the first ferrule so as to face the first ferrule. A second ferrule having insulation between guide means holes penetrating each of the means, a second optical fiber held by the second ferrule and positioned and connected to the first optical fiber, and the second ferrule having conductivity. A plurality of displaceable coupling maintaining means for engaging the respective projecting portions of the plurality of guiding means projecting from the ferrule to maintain the coupled state of the first ferrule and the second ferrule, and a plurality of displaceable coupling maintaining means provided on the second ferrule. A second wire number identifying means, whose output terminal is electrically connected to each of the plurality of coupling maintaining means, is supplied to the plurality of guiding means to provide the first wire number identifying means and the second wire number identifying means. Identification value to the means Each is output, said first optical fiber and line number identification function optical connector, characterized in that identifying the connection status of the second optical fiber, based on the identification value. 3. The plurality of guide means comprises a pair of guide pins implanted in the fixing means, and the free end peripheral surfaces of the pair of guide pins are engaged with the coupling maintaining means. The optical connector with a wire number identifying function according to claim 1 or 2, wherein the engaging groove is cut out. 4. The plurality of coupling maintaining means is composed of a pair of substantially L-shaped plate springs arranged on both sides of the second ferrule, and the pair of plate springs are provided with Second
4. An engagement hole, which engages in a penetrating state, is formed in an engagement groove in a peripheral surface of a free end portion of a guide pin protruding through the ferrule. 1
An optical connector with the wire number identification function described in Section. 5. The optical connector with a wire number identifying function according to claim 2, wherein a diode is built in at least one of the first wire number identifying means and the second wire number identifying means. The optical connector with a wire number identification function according to claim 2.