Abstract

Each of a plug and a receptacle is provided with an optical contact and a shutter mechanism. The shutter mechanisms are linkaged with each other when connecting the plug and the receptacle to each other. At least one of the plug and the receptacle includes a movable member moved with being pushed by the other of the plug and the receptacle, an urging member constantly urging the movable member toward the other of the plug and the receptacle, and a cam mechanism causes the shutter mechanism to follow movement of the movable member. The shutter mechanism includes a shutter plate having an opening and movable between a first position where the opening does not face the optical contact and a second position where the opening faces the optical contact, and a projection adapted to be fitted into the opening when the shutter plate is in the the first postion.

IPC Classes  ?

• G02B 6/36 - Mechanical coupling means

Abstract

There is provided an optical connector configured to receive a plurality of MT ferrules attached to terminal ends of multi-fiber cables. The optical connector includes a housing through which multiple receiving holes receiving the MT ferrules are bored. The receiving holes are arranged in the direction of the long side of front end faces of the MT ferrules. A pair of holding elements is provided in each of the receiving holes. The pair of holding elements is positioned at both ends in the direction in which the receiving holes are arranged and protrude to a side at which the MT ferrules are inserted. Both ends of a rear end flange of each of the MT ferrules placed in the receiving holes are held by the pair of holding elements. The optical connector enables easy setting-in of MT ferrules and reduction in size of optical connectors can be achieved.

IPC Classes  ?

• G02B 6/40 - Mechanical coupling means having fibre bundle mating means

Abstract

The present invention relates to a backplane optical connector comprising a first connector secured to a backplane and a second connector mounted on a daughter board. The first connector comprises a first optical input-output part, guide holes, and a shutter. The shutter is a plate that covers the first optical input-output part when the daughter board is not inserted. The second connector comprises guide pins, a pressing part, and a second optical input-output part. The guide pins first make contact with the first connector and are inserted into the guide holes during insertion of the daughter board. The pressing part pivots the shutter after degrees of freedom of the second connector are restricted by the guide pins and the guide holes. There is a space for accommodating the pivoted shutter between the pressing part and the second optical input-output part. The pressing part does not make contact with the first connector until the pressing part makes contact with the shutter during insertion of the daughter board.

IPC Classes  ?

• G02B 6/38 - Mechanical coupling means having fibre to fibre mating means

Abstract

A receptacle includes a hollow cylinder and a flange. A plug includes a barrel having a cylindrical body, a semicylindrical section extending from the body, and an engaging section provided at an end of the semicylindrical section and a coupling nut. A boom-like retaining piece is cut out and formed in the semicylindrical section and a retaining hook is formed at an idle end of the retaining piece located in the engaging section. The coupling nut is screwed onto threads of the hollow cylinder so that the plug is connected to the receptacle. Before the connection, the engaging section is engaged with and inserted into the hollow cylinder and the retaining piece is caught in the receptacle, so that the plug is temporarily retained to the receptacle securely.

IPC Classes  ?

• G02B 6/36 - Mechanical coupling means

Abstract

An optical fiber connector comprises a ferrule having a rear end, a chuck located rearward of the ferrule, a ring having a front end, and a coil spring. The ring is attached to the chuck so as to surround the chuck. The optical fiber connector holds an optical fiber which is inserted from a rear end of the optical fiber connector. In detail, when the optical fiber is inserted into the optical fiber connector, an end of the optical fiber passes through the chuck to be accommodated in the ferrule. The coil spring presses the ring forward (toward the ferrule) so that the chuck is squeezed to hold the inserted optical fiber. When the ring is moved rearward by a stopper inserted between the rear end of the ferrule and the front end of the ring, the chuck is released to release the optical fiber.

IPC Classes  ?

• G02B 6/38 - Mechanical coupling means having fibre to fibre mating means

Abstract

Connector including a plug and a receptacle. The receptacle 30 includes a cylindrical part 31 and a flange 32; the plug 40 includes a cylindrical barrel 41, which houses internal connectors, and a coupling nut 42. At an end of the barrel 41, an engaging piece 41a and a pair of locking pieces 41b and 41c, which face each other, project in an axial direction of the barrel. Locking hooks 41d and 41e are formed at the tips of the locking pieces 41b and 41c, respectively. The coupling nut 42 is screwed onto the cylindrical part 31 to connect the plug 40 to the receptacle 30. Before the connection, the engaging piece 41a and the locking pieces 41b and 41c are inserted into and engaged with the cylindrical part 31 and positioned. At the same time, the locking pieces 41b and 41c are caught in the receptacle 30 to temporarily secure the plug 40 to the receptacle 30.

IPC Classes  ?

• G02B 6/36 - Mechanical coupling means
• H01R 13/621 - Bolt, set screw or screw clamp
• H01R 13/631 - Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure for engagement only
• H01R 13/639 - Additional means for holding or locking coupling parts together after engagement

Abstract

In an optical connector, end faces of a pair of ferrules that hold multiple optical fibers are positioned with two guide pins and butted against each other to connect the optical fibers in the pair of ferrules. The optical connector is provided with an urging member for pushing the end faces against each other. The end faces are ground at an angle. The gap between the guide pins and guide holes, which open at the end faces and into which the guide pins are fitted, is larger than 0.004 mm and smaller than or equal to 0.008 mm. Powder caused by the friction generated when the guide pins are inserted and fitted into the guide holes is greatly reduced. Connection loss does not increase even when frequent connection and disconnection are performed, and cleaning the connector becomes unnecessary.

IPC Classes  ?

• G02B 6/40 - Mechanical coupling means having fibre bundle mating means

Abstract

Provided is an optical connector whose miniaturization is easier than conventional. An optical connector (100) comprises a housing (103) holding an optical member (101), a slider (105) slidably held by the housing (103), a shutter (107) provided to the slider (105) in an openable and closable manner and adapted to be opened and closed to expose and isolate the optical member (101) to and from the outside, and slider-side coil springs (109) pushing the slider (105) in a direction away from the housing (103). The slider-side coil springs (109) are disposed in a width direction of the shutter (107). The optical connector (100) is configured such that the shutter (107) is closed when the slider (105) is moved by an elastic force of the slider-side coil springs (109) in the direction (direction Al) away from the housing (103) and that the shutter (107) is opened when the slider (105) is moved against the elastic force of the slider-side coil springs (109) in a direction approaching the housing (103).

IPC Classes  ?

• G02B 6/38 - Mechanical coupling means having fibre to fibre mating means

Abstract

An optical module 10 include a substrate 11, a holding member 12 of resin that is secured to the substrate 11, has a pair of through holes 21 drilled through the substrate 11 in a direction orthogonal to the upper surface 11a, and the entire length L in the direction orthogonal to the upper surface 11a is at least 1.9 mm and less than 2.8 mm, and a pair of guide pins 13 that are inserted into the through holes 21 and secured to the holding member 12 by locking pieces 14, in which one end section of each of the guide pins 13 is held by the holding member 12 across the entire length L and the other end section to be inserted into one of guide pin insertion holes 32 of the MT connector 30 projects 2.8 mm or more from the holding member 12. This structure downsizes the optical module connected to an MT connector.

IPC Classes  ?

• G02B 6/40 - Mechanical coupling means having fibre bundle mating means

Abstract

An optoelectrical connector is composed of a plug to which a wire and an optical fiber are assembled and a receptacle to which the plug is inserted and connected. A receptacle 100 includes insulation sleeves 140 and conductive contacts 130 in openings of receptacle housings 110-1 and 110-2, and plugs 200-1 and 200-2 include a ferrule assembled bodies 230 which are composed of an insulation ferrule 210 which holds an optical fiber 17 and a conductive cylindrical member 220 which holds the ferrule 210 and to which a wire (a conductor 13) is assembled, in an opening of the plug housing 240. When the plugs 200-1 and 200-2 are inserted into the receptacle 100, the contacts 130 and the cylindrical member 220 contact with each other and the ferrules 210 are inserted into the sleeves 140. Parts which serve electrical connection are not exposed.

IPC Classes  ?

• G02B 6/42 - Coupling light guides with opto-electronic elements

Abstract

A ring-shaped first ring-shaped magnetic core, a first excitation coil wound on the first ring-shaped magnetic core, two detection coils wound on the first ring-shaped magnetic core in such a manner that respective input axes of the detection coils are orthogonal to each other, two signal detection/feedback units that detect outputs of the detection coils and feed output signals back to the detection coils, and a first excitation circuit that supplies an excitation current to the first excitation coil are provided, a second ring-shaped magnetic core, a compensation coil wound on the second ring- shaped magnetic core, and a compensation signal generation unit that generates, from an output of a detection coil, a compensation current to be applied to the compensation coil, are further provided, and the second ring- shaped magnetic core and the compensation coil are disposed in positions and directions so that a compensation magnetic field created by the compensation coil cancels interference between magnetic fields generated by two detection coils wound on the first ring-shaped magnetic core.

IPC Classes  ?

• G01R 33/04 - Measuring direction or magnitude of magnetic fields or magnetic flux using the flux-gate principle
• E21B 47/024 - Determining slope or direction of devices in the borehole

Abstract

A stopper 50 is fixed to an optical connector 10, and the optical connector 10 is accommodated in an opening section 21 of a housing 20. The housing 20 is engaged with the stopper 50 so as to be displaceable with respect to the stopper 50 by a predetermined amount in a direction of inserting the optical connector 10 to a receptacle, and the stopper 50 is biased rearward by a coil spring 40 with respect to the housing 20. The free end of a clip piece 15 is placed on the free end of a latch piece 14 of the optical connector 10, and the free end of the clip piece 15 is placed on an inclination surface 23a at the front end of a concave section 23 formed on an inner wall surface of the opening section 21. At the time of detachment from the receptacle, the housing 20 is displaced in a direction to be pulled out against the biasing force of the coil spring 40. Accordingly, the clip piece 15 and the latch piece 14 are pushed down by the inclination surface 23a to release the lock of the latch piece 14. The detachment from the receptacle can be made in one motion.

IPC Classes  ?

• G02B 6/36 - Mechanical coupling means

Abstract

[Problems to be solved] To make it possible to easily perform cleaning of a polishing jig that holds a ferrule, after a polishing operation. [Means for Solution] A polishing jig 10 includes a holding member 11 for holding a ferrule 31 when polishing a front end face of the ferrule 31. The holding member 11 is formed by a holding member body 12 having a through hole 121 through which the ferrule 31 is inserted, and protrusions 16 and 17 which are provided on an upper surface of the holding member body 12, for supporting a flange 33 of the ferrule 31 when the ferrule 31 is inserted into the through hole 121.

IPC Classes  ?

• B24B 19/00 - Single purpose machines or devices for particular grinding operations not covered by any other main group
• G02B 6/36 - Mechanical coupling means

Abstract

Provided is an optical connector apparatus comprising a connector which is connected to an electro-optical composite cable including an optical fiber and a metal conductor, and a connection object to be connected. The connector is provided with a ferrule which has a conductive portion on at least a part of the surface thereof. The connection object to be connected is provided with an electrically conductive connection member to be connected to the ferrule. The ferrule and the cable are connected by a crimping structure. When the ferrule is inserted in the connection member, the connector and the connection object to be connected are electrically and optically connected to each other. Provided is also an optical connector apparatus which comprises a connector having a plurality of ferrules having distances between the end of the ferrules and the conductive portions so that the timing of the connection of the connector to the object to be connected is delayed, and thus the optical connector apparatus is capable of hot swapping. The connection object to be connected can be a combination of an adapter and a mating connector, or an optical element and an adapter which holds the same, etc.

IPC Classes  ?

• G02B 6/36 - Mechanical coupling means

Abstract

Provided is an optical connector apparatus comprising a connector which is connected to an electro-optical composite cable including an optical fiber and a metal conductor, and a connection object to be connected. The connector is provided with a ferrule which has a conductive portion on at least a part of the surface thereof. The connection object to be connected is provided with an electrically conductive connection member to be connected to the ferrule. The ferrule and the cable are connected by a crimping structure. When the ferrule is inserted in the connection member, the connector and the connection object to be connected are electrically and optically connected to each other. Provided is also an optical connector apparatus which comprises a connector having a plurality of ferrules having distances between the end of the ferrules and the conductive portions so that the timing of the connection of the connector to the object to be connected is delayed, and thus the optical connector apparatus is capable of hot swapping. The connection object to be connected can be a combination of an adapter and a mating connector, or an optical element and an adapter which holds the same, etc.

IPC Classes  ?

• G02B 6/38 - Mechanical coupling means having fibre to fibre mating means
• G02B 6/42 - Coupling light guides with opto-electronic elements
• H01R 13/46 - Bases; Cases

Abstract

Provided is an optical connector apparatus comprising a connector which is connected to an electro-optical composite cable including an optical fiber and a metal conductor, and a connection object to be connected. The connector is provided with a ferrule which has a conductive portion on at least a part of the surface thereof. The connection object to be connected is provided with an electrically conductive connection member to be connected to the ferrule. The ferrule and the cable are connected by a crimping structure. When the ferrule is inserted in the connection member, the connector and the connection object to be connected are electrically and optically connected to each other. Provided is also an optical connector apparatus which comprises a connector having a plurality of ferrules having distances between the end of the ferrules and the conductive portions so that the timing of the connection of the connector to the object to be connected is delayed, and thus the optical connector apparatus is capable of hot swapping. The connection object to be connected can be a combination of an adapter and a mating connector, or an optical element and an adapter which holds the same, etc.

IPC Classes  ?

• G02B 6/36 - Mechanical coupling means
• G02B 6/10 - Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
• G02B 6/44 - Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
• H01B 11/22 - Cables including at least one electrical conductor together with optical fibres

Abstract

Provided is an optical connector apparatus comprising a connector which is connected to an electro-optical composite cable including an optical fiber and a metal conductor, and a connection object to be connected. The connector is provided with a ferrule which has a conductive portion on at least a part of the surface thereof. The connection object to be connected is provided with an electrically conductive connection member to be connected to the ferrule. The ferrule and the cable are connected by a crimping structure. When the ferrule is inserted in the connection member, the connector and the connection object to be connected are electrically and optically connected to each other. Provided is also an optical connector apparatus which comprises a connector having a plurality of ferrules having distances between the end of the ferrules and the conductive portions so that the timing of the connection of the connector to the object to be connected is delayed, and thus the optical connector apparatus is capable of hot swapping. The connection object to be connected can be a combination of an adapter and a mating connector, or an optical element and an adapter which holds the same, etc.

IPC Classes  ?

• G02B 6/36 - Mechanical coupling means

Abstract

An RD converter has: a multiplier multiplying a resolver signal S1 by an output of a SIN ROM; a multiplier multiplying a resolver signal S2 by an output of a COS ROM; a subtractor subtracting an output of the multiplier from an output of the multiplier; a synchronous detecting circuit detecting synchronously an output of the subtractor with reference to an excitation signal; a controller controlling an output angle .theta.' to make an output of the synchronous detecting circuit equal to 0; a correction data part outputting a correction angle .theta.c for the output angle .theta.'; an adder adding the output angle .theta.' and the correction angle .theta.c; the SIN ROM producing a sine value of a result from the adder; and the COS ROM producing a cosine value of the result.

IPC Classes  ?

• H02K 24/00 - Machines adapted for the instantaneous transmission or reception of the angular displacement of rotating parts, e.g. synchro, selsyn

Abstract

An adapter unit capable of preventing breakage of a positioning key for accurately connecting first and adapters. A key is formed on an inner peripheral surface of a hollow cylindrical portion of a receptacle adapter such that a front end thereof is rearward of a front end of the hollow cylindrical portion. Projecting portions are formed on the inner peripheral surface of the hollow cylindrical portion at locations away from the key in a circumferential direction, for receiving a front end of a hollow cylindrical portion of a plug adapter inserted into the hollow cylindrical portion of the receptacle adapter. Receiving portions are formed on an outer peripheral surface of the hollow cylindrical portion of the plug adapter, for receiving the projecting portions. The front end of the key is rearward of the front end of each projecting portion.

IPC Classes  ?

• G02B 6/36 - Mechanical coupling means

Abstract

An A/B-phase signal generator wherein an up/down count unit 52C counts up by an up-count command or counts down by a down-count command at fixed intervals, an angle comparison unit 51 compares the count result ACNT of up/down count unit 52C with an input rotation angle .theta. and generates a count request, which is an up-count request or a down-count request, a count request comparison unit 52B compares a previous count request with a next count request and generates an up-count command or a down-count command only when the previous count request and the next count request are both up-count requests or down-count requests, respectively, and an A/B-phase pulse generator 53 receives a least significant bit and a second least significant bit of up/down count unit 52C and generates and outputs an A-phase pulse signal and a B-phase pulse signal.

IPC Classes  ?

• G01D 5/244 - Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means generating pulses or pulse trains

Abstract

Two-phase resolver signals output from a rotation angle detector are squared by first and second squaring circuits. The squared signals are added by an adding circuit. The DC component of the output signal from the adding circuit is removed by a filter. The output signal from the filter is compared with a reference potential by a comparator to generate a rectangular-wave signal. The phase of the rectangular-wave signal is corrected a phase shifter. The frequency of the output signal from the phase shifter is divided by 2 by a frequency dividing circuit in synchronization with an excitation signal supplied to the rotation angle detector to generate a synchronous clock.

IPC Classes  ?

• H03K 12/00 - Producing pulses by distorting or combining sinusoidal waveforms
• H03K 3/02 - Generators characterised by the type of circuit or by the means used for producing pulses
• H03K 5/13 - Arrangements having a single output and transforming input signals into pulses delivered at desired time intervals
• H03L 7/24 - Automatic control of frequency or phase; Synchronisation using a reference signal directly applied to the generator

Abstract

A reference signal generation circuit generates a reference signal used in synchronous detection for removing an excitation signal component in an angle calculation section that converts a detection angle .theta. obtained from two-phase resolver detection signals output from a resolver, to a digital output angle .PHI.. The reference signal generation circuit includes a first multiplier, a second multiplier, and an adder. The first multiplier multiplies one of the resolver detection signals sin.theta.sin(.omega.t+.about..omega.) by the sine value sin.PHI. of the digital output angle .PHI. obtained from the angle calculation section. The second multiplier multiplies the other resolver detection signal cos.theta.sin(.omega.t+.about..omega.) by the cosine value cos.PHI. of the digital output angle .PHI. obtained from the angle calculation section. The adder adds the output of the first multiplier and the output of the second multiplier to output the sum signal sin(.omega.t+.about..omega.) as the reference signal.

IPC Classes  ?

• G01D 5/00 - Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
• G01D 3/032 - Measuring arrangements with provision for the special purposes referred to in the subgroups of this group mitigating undesired influences, e.g. temperature, pressure gating undesired signals
• H02K 11/02 - Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for suppression of electromagnetic interference

Abstract

A band elimination filter 35 that eliminates or reduces a low frequency noise superposed on resolver signals S1 and S2 is provided between a synchronous detection circuit 34 that performs synchronous detection by referring to an excitation signal and a controller 36 that controls a digital angle output .phi. to make a deviation (sin (.theta. - .phi.), which is the output of the synchronous detection circuit, zero.

IPC Classes  ?

• G01D 5/00 - Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
• G01D 5/12 - Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
• H02K 11/02 - Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for suppression of electromagnetic interference

Abstract

A tracking loop type digital angle converter that operates so that a deviation between input and output angles always becomes zero by feeding back the output angle to the input angle, wherein in order to eliminate a case where a control deviation decreases an angle error between the input and output angles is in the vicinity of 180°, i.e., where response becomes low, there are provided a detected signal sign judging section (41) that judges signs of rotation detection signals to determine a quadrant where the input angle exists, and an output angle correcting section (42) for comparing an angle region of the output angle and the quadrant of the input angle to detect a state where the angle error is excessive, judging that the control response is low and carrying out a process for compensating the output angle.

IPC Classes  ?

• G01D 5/00 - Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable

Abstract

Potentials at both ends of an exciter coil to which an exciting signal is sent by a push-pull method are compared, and at least one of a short circuit to ground and a short circuit to a power supply of a signal line for the exciting signal is detected based on the duty cycle of a rectangular-wave signal indicating the result of comparison. Alternatively, a predetermined reference potential is compared with a potential of at least one of two phase detection signals before detection, and at least one of a short circuit to the ground and a short circuit to the power supply of a signal line for the at least one of the detection signals is detected based on the duty cycle of a rectangular-wave signal indicating the result of comparison.

IPC Classes  ?

• G01D 5/22 - Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature differentially influencing two coils