JP2670334B2 - Optical fiber mounting base - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to an optical fiber connector used for manufacturing an optical fiber connector by butt-connecting end faces of optical fibers in a capillary tube mounted and fixed on a connector substrate. Regarding the fiber embedded base.

(Prior Art) As a connector substrate for connecting optical fibers to each other, a mounting groove for capillaries is mounted on the central portion in the longitudinal direction of the upper surface, guide grooves for optical fibers are mounted on both sides thereof, and coating portions for optical fibers are mounted on both sides thereof. The present applicant has a substrate having a mounting groove, a capillary tube fixed to the mounting groove of the capillary tube and having an opening at the center upper part in the longitudinal direction, and a protective plate that covers the upper surface of the substrate. Proposed.

Then, the work of incorporating the optical fiber into the connector substrate is performed, for example, on a work table, and the naked optical fiber portion with the coating removed is inserted into the capillary tube fixed to the mounting groove from both sides to open the capillary tube. The end faces of the bare optical fiber parts are butted against each other at the section, a refractive index adjusting agent having viscosity is applied to the butted part, and then a glass protective plate is covered on the upper surface of the substrate to manufacture an optical fiber connector.

(Problems to be Solved by the Invention) However, in the above series of steps of manufacturing an optical fiber connector by incorporating an optical fiber into a connector substrate,
The target is a fine optical fiber, and since the assembling process is complicated, it has not been mechanized yet, and the optical fiber is assembled into the substrate by a skilled worker under a microscope. Moreover, the optical fiber is usually wound around a winding device such as a reel, and is used by being unwound from the winding device. Therefore, the tip end side of the optical fiber to be inserted into the capillary tube is in a state of being slightly curved due to the winding habit associated with the winding of the winding device, and the operator incorporates it into the substrate while taking this curvature into consideration. The work involved was very complicated.

Therefore, in such assembling work, if the connector substrate and the optical fiber are held by an appropriate jig,
It is easy to install even if it is not a skilled person, and it is desirable from the viewpoint of productivity, but there is still no suitable jig, so it is possible to provide a jig that can easily install an optical fiber into the connector board. Was wanted.

The present invention has been made in view of the above points, and provides an optical fiber assembling table that has a simple structure, is easy to incorporate an optical fiber into a connector substrate, and can enhance the productivity of the optical fiber connector. The purpose is to

(Means for Solving the Problems) In order to achieve the above object, the optical fiber mounting base of the present invention has a set of holders for extending and holding an optical fiber from which the coating of the tip is removed from one side. A board mounting base provided with a board pedestal for mounting a connector board, and the holders are respectively arranged on the left and right sides of the board mounting base, the end faces of the optical fibers held by the respective holders are opposed to each other, and
A set of holder mounting bases, each of which has a holder pedestal that is mounted and fixed by inclining at a predetermined angle with respect to a horizontal plane so that the substrate mounting base side is lowered, and the holder pedestal is slidable to the substrate mounting base side. Then, the board mounting base is placed so that it can be moved up and down, and the holder base is moved toward and away from the board mounting base while maintaining the inclination angle of the holder mounted on the holder base. Correspondingly, an operating mechanism for moving the board mount up and down is provided.

(Function) Attach the connector board to the board pedestal and attach it to each holder pedestal.
When a holder holding an optical fiber is placed and fixed with the end faces of the optical fibers facing each other, the tip of the optical fiber whose coating is removed bends and abuts at a predetermined position on the connector substrate. Then, when the operating mechanism is operated, both holder mounting bases approach the substrate mounting base side and the substrate pedestal rises. By such a series of movements of the holder mounting table and the substrate pedestal, the tip of the optical fiber held by each holder is smoothly guided to a predetermined position in the connector substrate by operating only the operating mechanism.

(Embodiment) An embodiment of the present invention will be described in detail below with reference to FIGS. 1 to 15.

The optical fiber mounting base is installed on the rectangular mounting base 1 and is arranged at the center of the mounting base 1 in the longitudinal direction.
Board mount 1 with board pedestal 11 for connector board mounting
0, respectively arranged on both sides of the board mounting base 10, holder pedestal 21,
A set of holder mounting tables 20 and 30 having 31 and the board mounting table 1
0 can be lifted up and down, and holder pedestals 21 and 31 can be mounted on the board mount 10.
An operating mechanism that moves the board mounting table 10 up and down in response to the approach and retreat
40 and a set of holders 50 for holding the two-core tape optical fiber with the coating of the tip portion removed.

As shown in FIGS. 1 and 2, the board mount 10 has a board pedestal 11 and a support base 12 that supports the pedestal 11. A mounting portion 13 for mounting a connector board is formed in the longitudinal direction at a substantially central position on the upper surface of the board pedestal 11. The mounting portion 13 has a pedestal 11 on which a connector board 60 described later is placed.
The stepped portion 11a formed by cutting the surface of the
The holding members 14 and 14 are disposed on both sides in the longitudinal direction of 1a, rise above the seating surface, and have U-shaped holding portions 14a that hold both ends of the connector board 60. A tapered surface that guides the mounting of the connector substrate 60 is formed.

Further, the pressing means 15 is provided on one side in the width direction of the stepped portion 11a. The pressing means 15 presses the connector board 60 mounted on the mounting portion 13 from the side surface and holds the board 60 on the mounting portion 13 together with the holding portion 14a. Pressing means 15
As shown in FIGS. 1 and 3, the pressing plate 15a is slidably fitted in the guide groove 11b formed on the upper surface of the board pedestal 11 and presses the connector board 60, and the pressing board 15a. A pressing spring 15c, which is provided in a spring hole 15b formed in the inside of the pressing plate 15a and constantly presses the pressing plate 15a toward the connector board 60, and a pressing plate 15a.
And a guide cover 15d which is placed on the upper part of the table to slidably restrain the pressing plate 15a in the guide groove 11b.

Further, the board base 11 is provided with a take-out means 16 for taking out the connector board 60 mounted on the mounting portion 13. As shown in FIG. 3, the take-out means 16 has a stepped portion 11a at the tip thereof.
Ejector pin 16a protruding from the upper side and pushing up the lower surface of the connector board 60, and the operation lever 16 for operating this pin 16a
b and a return spring 16c for urging the operating lever 16b downward.The base end of the operating lever 16b is rotatably supported by the board pedestal 11 and extends outward from the side surface of the pedestal 11. A handle 16d for rotating operation is provided at the tip.

Further, a connector retainer 17 is arranged on one side of the mounting portion 13 on the substrate base 11 opposite to the pressing means 15. As shown in FIG. 1, this connector retainer 17 is connected to the transparent acrylic resin retainer plate 17a that presses the connector substrate 60, and this retainer plate 17a, so that the retainer plate 17a can be tilted to the connector substrate 60. Do this handle 17b, this handle 17b
And a ball lock 17d that locks the support shaft 17c when the pressing plate 17a is tilted.

On the other hand, on the support base 12, as shown in FIG. 2, an elevating bearing 18 which is slidably contacted with the upper surface of a rotary dial 41, which will be described later, and which rotates with the rotation of the rotary dial 41 is provided on an extension line of the mounting portion 13. Are arranged at both ends in the longitudinal direction. The bearing 18 is rotatably supported by a support shaft 12a attached to the support base 12. Further, the support base 12 is an end plate arranged in a recess 1a formed in the center of the lower surface of the built-in base 1.
It is connected to 1b by two connecting shafts 2 (one is not shown). That is, the connecting shaft 2 is supported by a columnar base 1c formed in the center of the pedestal 1 so as to be vertically movable via a ball bearing 3, and the support base 12 includes a lower face of the columnar base 1c and an upper face of the end plate 1b. It is constantly urged downward by the coil spring 4 that is contracted between the two.

Here, the connector substrate 60 is an optical fiber connector formed by abutting and connecting the end faces of the optical fibers within the substrate 60, and is formed of, for example, plastic into a substantially square pole shape, and the connector substrate 60 shown in FIGS. As shown in the figure, a lateral groove 61 that crosses the substrate 60 in the center of the upper surface and the lateral groove 61
And a pair of parallel V-grooves 62 that are orthogonal to each other and guide the bare optical fiber portion 70a with the coating removed. In the center of each V-groove 62, there is an opening 63a in the upper center, and a tapered surface 63 for guiding the bare optical fiber portion 70a to be inserted into the inside.
Glass capillaries 63 having b and 63b (see FIG. 14) formed on the inner walls at both ends are fixed. Further, at both ends in the longitudinal direction of the V groove 62, concave grooves 64, 64 which extend to the end portion of the connector substrate 60 and accommodate the covering portion 70b (see FIG. 14) of the optical fiber 70 held by the holder 50 are provided. ing.

The holder mounting tables 20 and 30 are arranged such that the end faces of the optical fibers held by the respective holders 50 face each other, and
The holder 50 is placed and fixed at a predetermined angle with respect to the horizontal plane so that the side becomes lower.
The angle is 15 to 15 degrees, and more preferably 7.5 to 10 degrees. When the holders 50 are mounted in such an inclined manner, the optical fiber 70
When the holder 50 holding the holder is placed on the holder pedestals 21 and 31, the bare optical fiber portions 70a and 70a bend and the connector substrate 60
The tips of the V grooves 62, 62 come into contact with each other, and the insertion into the capillary tubes 63, 63 is smoothly performed. In this embodiment, the inclination angle of each holder 50 is set to 7.5 °.

As shown in FIG. 2, the holder mounting base 20 has a holder base 21 on which the holder 50 is mounted and fixed, and a movable base 22 on which the holder base 21 is slidably mounted. Then, the holder pedestal 21 is separated from the rear end wall 1d of the built-in pedestal 1 by a predetermined distance d ₁
Existing on the movable table 22, while the movable table 22 is mounted on the pedestal 1
It is mounted on the top so as to be slidable in the longitudinal direction.

The holder pedestal 21 has rails 21a formed on the upper surface for positioning the holder 50 to be placed, and holding pieces 21b for holding the holder 50 are erected at appropriate intervals on both sides in the width direction. A stopper 21c for locking the holder 50 to be placed is provided at the end on the 10 side.

In addition, the holder 50 is attached to the holder pedestal 21.
A clamp member 23 for fixing to is provided. As shown in FIG. 6, the clamp member 23 penetrates the pedestal body in the width direction and can be pushed in or pulled out, and a clamp lever 24 for clamping operation is operated to move the lever 24 up and down to hold the holder 50. It has a clamp arm 25 for fixing and releasing.

As shown in FIGS. 6 and 7, the clamp lever 24 is provided with a handle 24a for pushing and pulling out the lever 24 at one end and an inclined surface 24b for tilting the clamp arm 25 at the other end. Are formed. An elongated hole 24c that engages with a guide pin 21d implanted in the pedestal 21 and guides the pushing / pulling-out operation of the lever 24 is formed substantially at the center in the longitudinal direction.

On the other hand, the clamp arm 25 has a bent portion at a substantially central position.
The support member 21 disposed on the upper surface of the holder pedestal 21 in 25a
It is rotatably supported by a pin 25b between e and 21e. An elastic body 25c such as chloroprene rubber is adhered to the tip end that abuts the holder 50, and an arc-shaped guide surface that abuts the inclined surface 24b of the clamp lever 24 and raises and lowers the arm 25 at the base end. 25d is formed.

The holder mounting table 21 is provided with an engaging groove 21f formed on the lower surface thereof via a linear guide 26,
It is placed on the movable table 22 by engaging with the convex strips 22a of 22. Further, between the rear end wall 1d of the built-in pedestal 1 and the holder pedestal 21,
The buffer spring 5 is interposed so as to coincide with the center line of the holder 50 to be mounted in the longitudinal direction. An adjusting screw 6 for adjusting the spring pressure of the buffer spring 5 to the extent that the end face of the optical fiber 70 is not damaged is screwed to the rear portion of the buffer spring 5 of the rear end wall 1d. The biasing force is preferably 10 g or less, and more preferably 4 to 6 g.

The movable base 22 is placed on an inclined step portion 1e formed on the rear end wall 1d side of the built-in pedestal 1, and the inclined surface of the inclined step portion 1e is a horizontal plane so that the center of the pedestal 1 is lowered. It is inclined by 7.5 °. Therefore, when the holder 50 is placed on the holder pedestal 21, the holder 50 also tilts by 7.5 ° with respect to the horizontal plane. A push-out spring 7 is contracted between the movable base 22 and the rear end wall 1d of the built-in pedestal 1, and the spring 7 constantly urges the movable base 22 together with the holder pedestal 21 toward the board mounting base 10 side. ing. On the other hand, a front stopper 22b that extends to the holder pedestal 21 and restricts the forward movement of the holder pedestal 21 from the movable pedestal 22 is attached to the substrate pedestal 10 side of the movable pedestal 22.
Further, at the center of the movable base 22 in the width direction on the substrate mounting base 10 side, on the extension line of the stepped portion 11a formed on the substrate pedestal 11, a bearing 27 mounted around the vertical axis mounted on the mounting arm 22a is arranged. Has been done. Incidentally, 1f is a rear stopper provided on the rear end wall 1d side of the inclined stepped portion 1e, and regulates the retracted position of the movable table 22.

On the other hand, the holder mounting table 30 also has a holder pedestal 31 on which the holder 50 is mounted and fixed, and a movable table 32 on which the pedestal 31 is slidably mounted, and the holder pedestal 31 has a clamp member.
33 and the movable base 32 are provided with bearings 37, respectively, and have substantially the same configuration as the holder mounting base 20. Therefore, in the following description, the same components as those of the holder mounting table 20 will be denoted by the corresponding reference numerals and detailed description thereof will be omitted. However, in the holder mounting table 30, unlike the holder mounting table 20, there is no one corresponding to the front stopper 22b, and instead of this, the end surfaces of the optical fibers are finally brought into contact with each other in the connector substrate 60 and A rotation stopper 38 that functions similarly to the stopper 22b is provided.

The stopper 38 has a rotating arm 38 extending substantially vertically.
A and a follower arm 38b connected to this lower end portion and extending in a substantially horizontal direction are formed in a substantially J shape as shown in FIG. Arm 32
The movable arm 32a is attached to the movable table 32 by rotatably supporting the central portion of the rotating arm 33a. At the upper end of the rotating arm 38a, a stopper portion 38c that abuts on the front surface of the holder pedestal 31 and restricts the movement toward the board mounting base 10 side, and the driven arm 3a.
At the tip of 8b, a cam member that extends upward and is described later
Contact portions 38d that contact the lower surface of 42 are formed respectively.
A return spring 39 is provided between the movable arm 32 and the lower end of the rotating arm 38a.

The operating mechanism 40 has a rotary dial 41 and a ring-shaped cam member 42 which is fitted to the outer periphery of the dial 41 and screwed integrally with the dial 41. It is mounted rotatably so as to cover the columnar base 1c projecting toward, and through an appropriate number of bearings 9 arranged on the outer periphery of the columnar base 1c.

The turning dial 41, as shown in FIGS. 2 and 8,
A flange portion 41b that projects inward is integrally formed on the upper portion of the cylindrical portion 41a.On the upper surface of the flange portion 41b, at a radial position corresponding to the elevating bearing 18, a circumferential direction from the upper surface of the flange portion 41b is provided. Two upper surface cam portions 41c, 41c which gently rise and whose end side is horizontal are formed at symmetrical positions with respect to the center of the dial 41. This top cam part
41c is the bearing 1 by rotating the rotating dial 41.
8 is pushed upward, and the board mounting base 10 is moved upward accordingly.

On the other hand, as shown in FIG. 2 and FIG. 9 to FIG. 11, the cam member 42 protrudes radially outward in the form of a flange on the outer peripheral surface of the lower half of the cylindrical body 42a, and the holder mounting table 20, 30 The wall surface cam portions 42b and 42b that come into contact with the bearings 27 and 37, respectively, are formed, and the side surface cam portions 42b and 42b are arranged at symmetrical positions with respect to the center of the cylinder. The cam surface 42c on the outer periphery of each side surface cam portion 42b has substantially the same first half so that the holder mounting tables 20 and 30 are pushed out toward the board mounting table 10 side after the cam member 42 has rotated by a predetermined amount. The radius of the latter half portion is formed so as to decrease in the radial direction, and when the turning dial 41 is fitted, the outer peripheral surface thereof and the outermost surface of the cam surface 42c are flush with each other. Further, on the lower surface of the cylindrical body 42a, a lower surface cam portion 42d that is adjacent to one side surface cam portion 42b and that abuts the abutting portion 38d of the stopper 38 is formed to project downward.
The lower surface cam portion 42d abuts against the abutting portion 38d and pushes down the abutting portion 38d to rotate the stopper 38 counterclockwise.

As shown in FIGS. 12 and 13, the holder 50 includes a lower plate 51 having recesses 51a formed on the lower surface for engaging the rails 21a and 31a of the holder pedestals 21 and 31, and the lower plate 51 can be opened and closed. It is composed of a two-divided type upper plates 52, 52 which are hinged to each other. The lower plate 51 has a plurality of magnets 53 for closing both plates 52, 52 at positions corresponding to the upper plates 52, 52 of the outer edge 51b.
Is embedded in the center of the upper surface, and a holding surface 51c of the optical fiber 70 which is curved in the longitudinal direction, and a fiber groove 51d is provided in the center thereof.
Is formed, and the fiber groove 5 is formed at three locations along the fiber groove 51d.
Three pairs of guide pins 54 are planted across the 1d. Further, the lower plate 51 is formed with an engagement step portion 51e for pressing the elastic body 25c of the clamp arm 25 and fixing it to the holder pedestals 21 and 31. Further, on the lower surface of the upper plate 52, a holding surface 52a formed corresponding to the shape of the holding surface 51c and a pin hole 52b for accommodating each pair of guide pins 54 when the both plates 51, 52 are closed are guided. It is provided so as to correspond to the position of the pin 54.

Assembling of the optical fiber 70 into the connector substrate 60 using the optical fiber mounting base configured as described above will be described below.

First, lift the connector retainer 17 on the board mount 10,
The connector board 60 is mounted on the mounting portion 13 of the board pedestal 11. Next, the tip end side of the optical fiber 70 is caused to protrude and held by the holder 50. The coating of the optical fiber 70 is removed from the end of the holder 50 by a predetermined length b (= 12.3 mm) to remove the previous portion, and the coating is removed to expose the bare optical fiber portions 70a, 70.
Cut a while leaving a predetermined length a (= 10.5 mm) (13th
Figure).

One set of holders 50 holding such an optical fiber 70 is prepared, and as shown in FIG. 2, one holder 50 is placed on the holder pedestal 21, and the other holder 50 is placed on the holder pedestal 31, respectively.
Fix it. At this time, the optical fiber held by each holder 50
The end faces of the holders 50 on the side of the bare optical fiber 70a are placed in contact with the stoppers 21c and 31c, respectively, so that the end faces of the holders 70 face each other, and fixed by the clamp members 23 and 33. Here, since the driven arm 38b of the rotation stopper 38 can be rotated downward by an amount corresponding to the height between the driven arm 38b and the upper surface of the built-in pedestal 1, the stopper portion 38c of the rotation stopper 38 has a stopper portion 38c. The holder pedestal 31 is separated from the holder pedestal 31 by a distance d ₂ corresponding to the rotation amount.
Therefore, when the holder 50 is fixed by the clamp member 33, the distance that the holder pedestal 31 is rotated toward the board mounting base 10 side.
Since it moves forward by d ₂ , the rotation dial 41 and rotation stopper 38
The forward movement is regulated by interposing a stopper S such as a locking pin between and.

Here, since the holder pedestals 21 and 31 are tilted by 7.5 ° with respect to the horizontal plane, each holder 50 on the holder pedestals 21 and 31 is also placed and fixed at an angle of 7.5 ° with respect to the horizontal plane. In this manner, when the holder 50 is tilted by 7.5 °, each of the bare optical fiber portions 70a has its tip bent in the V groove 62 of the connector substrate 60 as shown in FIG. Are separated from each other by a distance l ₁ (≈1 mm), and the tip of each bare optical fiber portion 70a is pressed into the V groove 62 by a length l ₂ (≈1 mm). Therefore, even if each bare optical fiber portion 70a is curved and the optical fiber 70 has a winding habit, the connector substrate
It is possible to smoothly carry out the operation of assembling into 60.

Next, the rotating dial 41 is turned to operate the operating mechanism 40. Then, first, the stopper S interposed between the dial 41 and the rotation stopper 38 is dropped by the rotation of the dial 41. And
The bearings 18 of the movable bases 22 and 32 start to rotate in accordance with the rotation of the cam member 42, but substantially the latter half of the cam surface 42c with which the bearings 27 and 37 of the movable bases 22 and 32 come in contact with each other in the radial direction. Since the cam member 42 is formed to be reduced in diameter, the movable bases 22 and 32 are pushed out toward the substrate mounting base 10 side by the amount output springs 7 and 7 after the cam member 42 rotates by a predetermined amount, and the forward movement is started. As a result, the holder pedestals 21 and 31 can be moved to the movable bases 22 and 31 without changing the inclination angle.
While approaching the substrate mount 10 while sliding integrally with 32, each naked optical fiber portion 70a is inserted into the capillaries 63, 63 while being guided by the V groove 62. Here, in order to smoothly perform the pushing operation of the movable tables 22 and 32, each pushing spring 7 has a biasing force of 500 g or less, more preferably 150 to 50 g. In order to adjust the biasing force, an adjusting screw 8 is screwed to a rear end wall 1d provided with each of the pushing springs 7.

Then, as shown in FIG. 15, each threaded optical fiber portion 70a
When the tip of the is inserted into the capillary tube for a predetermined length l ₃ (≈1 mm), the lifting bearings 18 and 18 ride on the upper cam portions 41c and 41c of the rotating dial 41, and the holder mounting tables 20 and 30 approach. Corresponding to the operation, the board mount 10 starts to rise little by little.

Holder mounting bases 20 and 30 have a predetermined horizontal distance (≈5 mm)
When moved, the bearings 18 of the movable bases 22 and 32 move to the end portions of the cam surfaces 42c, and the lifting bearings 18 and 18 move to the horizontal portions of the upper surface cam portion 41c.
And the rise of the board mount 10 is stopped. This mounting base
The amount of rise of 10 may be, for example, about 1 mm, but even if it is zero or more, the bare optical fiber portion 70
It is not preferable for smooth insertion of a into the capillary tube 63.

At this time, when observing the connector substrate 60 with a microscope, in each capillary tube 63 of the connector substrate 60, the bare optical fiber portion 70a,
As shown in FIG. 16, the end faces of the 70a are opposed to each other with a predetermined interval l (≈100 μm). Further, in the area on the connector substrate 60, the bare optical fiber portions 70a inserted from the left and right into the capillary tube 63 and the covering portion 70b continuous with the bare optical fiber portions 70a are
As shown in FIG. 17, it is horizontal to the plate surface of the substrate 60. If both optical fibers 70, 70 are not horizontal in this area, each optical fiber part 70 is covered with a glass plate (protective cover) to bond the end faces of the abutted bare optical fiber parts 70a to each other. Are pulled apart from each other, and a gap is formed again between the bare optical fiber portions 70a, 70a.

Next, the end faces are inspected by observing with a microscope whether there is any abnormality in the cut surfaces of the bare optical fiber parts 70a, 70a, and if necessary, after cleaning the end faces to remove dust and the like, a refractive index adjusting agent is added to each capillary tube 63. Injection through the opening 63a of the bare optical fiber part 70a, 7
Apply to the abutting part of 0a.

After that, when the rotary dial 41 is further rotated, the cam member 42
The lower surface cam portion 42d contacts the contact portion 38d of the rotation stopper 38, the contact portion 38d is pushed downward, and the rotation stopper 38 rotates. As a result, the stopper portion 38c becomes the holder pedestal 31.
Then, the regulation of the holder pedestal 31 in the forward direction by the rotation stopper 38 is released. Then, the holder pedestal 31 slides forward by the urging force of the buffer spring 5, and the end surfaces of the bare optical fiber portions 70a, 70a are abutted against each other. At the time of such abutting, the spring 5 applies the forward biasing force to the holder pedestal 31, but also buffers the reaction force transmitted to the holder pedestals 21, 31 via the optical fibers 70, 70 associated with the abutting. To do.

Next, an ultraviolet curable adhesive is applied on the connector substrate 60, and then a glass plate is placed thereon. Here, on the connector substrate 60, the bare optical fiber portion 70a and the covering portion 70b continuous with the bare optical fiber portion 70a are horizontal with respect to the plate surface of the substrate 60, so there is a gap in the abutting portion of the bare optical fiber portions 70a, 70a. It never happens. Then, while the connector retainer 17 is covered and pressed on this, ultraviolet rays are irradiated for a predetermined period of time, for example, 3 minutes to cure the adhesive, whereby both holders 5 are
The end faces of the optical fibers 70, 70 held between 0 and 50 are optically connected to each other.

Thereafter, the upper plates 52, 52 of the holders 50 are lifted to release the held optical fibers 70, 70, and at the same time, the handle 16d of the take-out means 16 is lifted upward to attach the substrate pedestal 11 to the mounting portion 13
Take out the connector board 60 mounted on. Further, when the optical fiber mounting base is returned to the mounting start state, the turning dial 41 may be turned in the opposite manner to the case of the mounting.

Although the optical fiber 70 has two cores in the present embodiment, the optical fiber mounting base of the present invention is not limited to this, and may be a single-core or multi-core optical fiber. It goes without saying that it can be used. Also,
The cam member 42 is provided with a rotation position confirmation means (not shown) such as a ball lock at an appropriate position between the built-in pedestal 1 and the cylindrical base 1c, so that the rotation dial 41 can be rotated. The above-mentioned variable rotation position may be confirmed at the time of the rotation operation by the sense of vibration or the like from the accompanying rotation position confirmation means.

(Effect of the invention) The optical fiber installation base of the present invention comprises a set of holders for extending and holding the optical fiber from which the coating of the tip portion is removed from one side, and a board base for mounting the connector board. And a holder for the optical fiber held by the holders so that the end surfaces of the optical fibers held by the holders face each other, and the side of the holder for the board is lower than the horizontal plane. It has a holder pedestal that is mounted and fixed by inclining it at a predetermined angle, and a set of holder pedestal that allows the holder pedestal to slide toward the board mounting base side and the board mounting base that can be moved up and down. An operating mechanism for moving the holder pedestal toward and away from the board mounting base while maintaining the inclination angle of the holder mounted on the holder pedestal, and lifting and lowering the board mounting base in response to the approaching and retreating operations. Since it is configured with and , The structure is simple, there is no need to do the installation work while always observing with a microscope, and the optical fiber can be easily installed in the connector board by operating the operating mechanism without special technology. This has the effect of dramatically increasing the productivity of.

[Brief description of the drawings]

1 to 15 show an embodiment of the present invention. FIG. 1 is a plan view of an optical fiber mounting base, FIG. 2 is a partial sectional front view of the optical fiber mounting base, and FIG. Is a sectional side view showing a substrate mounting base of the optical fiber mounting base, FIG. 4 is a plan view showing a connector substrate used in the optical fiber mounting base of the present invention, and FIG. 5 is a VV sectional view of FIG. , FIG. 6 is a sectional side view showing an essential part of the holder mounting table, FIG. 7 is a plan view of a clamp lever,
8 is a perspective view of a rotary dial, FIG. 9 is a perspective view of a cam member, FIG. 10 is a bottom view of the same member, FIG. 11 is a front view of the same member, FIG. 12 is a perspective view of a holder, FIG. 13 is a plan view of a holder holding an optical fiber, FIG. 14 is an enlarged view of a main part showing a relationship between a connector substrate and an optical fiber, and FIG. 15 is a case where a bare optical fiber part is inserted 1 mm into a capillary tube. FIG. 16 is an enlarged view of a main part showing a relationship between the connector substrate and the optical fiber, FIG. 16 is an enlarged view of a main part showing an end face of a bare optical fiber portion in the connector substrate, and FIG.
The figure is an enlarged view of the essential parts showing the state of the optical fiber on the connector substrate. 1 ... Built-in pedestal, 5 ... Buffer spring, 7 ... Extrusion spring, 10 ... Substrate mounting base, 11 ... Substrate pedestal, 11a ... Step, 20,30 ... Holder mounting base, 21,31 ...... Holder base, 2
2, 32 ...... Movable base, 40 ...... Operating mechanism, 41 ...... Rotating dial, 42 ...... Cam member, 50 ...... Holder, 60 ...... Connector board, 70 ...... Optical fiber.

Continuation of front page (56) Reference JP-A-52-10150 (JP, A) JP-A-55-96912 (JP, A) JP-A-61-25109 (JP, A) JP-A-61-235805 (JP , A) JP-A-62-223708 (JP, A)

Claims (1)

(57) [Claims] 1. A set of holders for extending and holding an optical fiber from which the coating of the tip portion is removed from one side, a board mounting base having a board pedestal for mounting a connector board, and this board mounting base. The holders are placed on both the left and right sides, and the end faces of the optical fibers held by the holders face each other, and the holders are mounted and fixed at a predetermined angle with respect to the horizontal plane so that the substrate mount side is lowered. Has a holder pedestal
A pair of holder mounting bases for sliding the holder base to the board mounting base side and the board mounting base so as to be able to move up and down while maintaining the inclination angle of the holder mounted on the holder mounting base. An optical fiber built-in base, comprising: an operating mechanism for moving the holder pedestal toward and away from the substrate mounting base and raising and lowering the substrate mounting base in response to the approaching and retreating motion.